WO2023011590A1 - Plunger pump and hand-held high-pressure cleaning machine - Google Patents

Plunger pump and hand-held high-pressure cleaning machine Download PDF

Info

Publication number
WO2023011590A1
WO2023011590A1 PCT/CN2022/110274 CN2022110274W WO2023011590A1 WO 2023011590 A1 WO2023011590 A1 WO 2023011590A1 CN 2022110274 W CN2022110274 W CN 2022110274W WO 2023011590 A1 WO2023011590 A1 WO 2023011590A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
pressure
pump body
hand
water inlet
Prior art date
Application number
PCT/CN2022/110274
Other languages
French (fr)
Chinese (zh)
Inventor
郝云
查霞红
赵凤丽
周杰
Original Assignee
苏州宝时得电动工具有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Publication of WO2023011590A1 publication Critical patent/WO2023011590A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention relates to the technical field of cleaning equipment, in particular to a plunger pump and a hand-held high-pressure cleaner.
  • the hand-held cleaning machine As a cleaning device, are more and more widely used in people's lives, bringing great convenience to people's lives.
  • the hand-held cleaning machine can be used to clean cars, glass doors and windows, garden roads, swimming pools, pets, etc. It is efficient, safe and easy to use.
  • the core module of the existing hand-held cleaning machine is the core pump, including the plunger pump, transmission mechanism and motor.
  • the water inlet valve of the water inlet channel is set along the water inlet direction, and the valve core of the water inlet valve is affected by the pressure water and the large spring force, so that the operating force required to pull the valve core through the trigger is relatively large;
  • the plunger bearings of existing single plunger motor pumps use deep groove ball bearings, as shown in Figures 1, 3, and 5.
  • the selected deep groove ball bearings are larger in size, so that the entire The overall size of the pump body is too large and the weight is increased;
  • the pump body cavity of the existing motor pump is a closed cavity. After the machine runs for a long time, the water particles on the surface of the plunger will accumulate in the pump body cavity. When it is made of steel, it is easy to rust when exposed to water, which will damage the bearing and reduce the life of the bearing;
  • the existing motors and pump motors are all internal rotor motors, which are large in size and heavy in weight, which increases the volume and weight of the hand-held washing machine;
  • the pump body, pump cover, gear box and pump head of the existing motor pump are made of aluminum die-casting material when the pressure is above 3MPa, which is high in cost and heavy in weight, and post-processing is required after the aluminum parts are die-casted, so the cost is higher.
  • the water inlet channel and the pressure relief valve of the high-pressure cleaner are set on the same channel. As shown in Figure 1, the pressure relief valve is partly located in the water inlet channel, forming water inlet resistance, which cannot meet the demand for a large flow rate of 300L/h.
  • the object of the present invention is to provide a plunger pump and a hand-held high-pressure cleaner with high efficiency, small size, light weight and high operating comfort.
  • the present invention adopts following technical scheme:
  • a hand-held high-pressure cleaning machine including a main body of the whole machine, the main body of the whole machine includes a pump body, a motor and a transmission mechanism;
  • the motor is connected to the pump body through a transmission mechanism to drive the pump body to run;
  • the pump body is a plunger pump body, including a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel.
  • the plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow.
  • the water inlet channel and the water outlet channel are respectively connected with the high-pressure chamber;
  • the rated pressure output by the pump body is 3-7Mpa, the size of the motor in the axial direction of its power output shaft, the size of the pump body in the direction of its plunger extension, and the width and height of the transmission mechanism
  • the product of the smaller size is 190-230cm 3 .
  • main body of the whole machine also includes a casing, and the motor, transmission mechanism and pump body are installed in the casing;
  • the shell is formed with a gun barrel interface for connecting the water outlet gun tube at the front end of the water outlet channel of the pump body;
  • the main body of the complete machine is configured as follows: in the axial direction of the power output shaft of the motor, the ratio of the length from the rear edge of the motor to the front edge of the plunger to the length from the rear edge of the shell to the front edge of the barrel interface is 0.2-0.35.
  • the motor is configured as an outer rotor brushless motor with a length of 42-55 mm.
  • the dimension of the pump body in the extending direction of the plunger is 75-109.5mm.
  • the high-pressure chamber includes a first high-pressure chamber and a second high-pressure chamber respectively matched with the two ends of the plunger;
  • the transmission mechanism includes an eccentric shaft, and the input end of the eccentric shaft is connected to the motor power.
  • the output shaft is connected by transmission, the output end of the eccentric shaft is connected to the plunger in rotation, and the eccentricity of the eccentric shaft is 3-6 mm; the transmission mechanism converts the rotational motion of the motor into the linear reciprocating motion of the plunger so that the plunger is alternately compressed or released
  • the first and second high pressure chambers are examples of the motor.
  • the transmission mechanism includes an eccentric shaft, the input end of the eccentric shaft is connected to the power output shaft of the motor, a groove is provided in the middle of the plunger for connecting the output end of the eccentric shaft, and the output end of the eccentric shaft is at least partially accommodated in the groove And it is rotationally connected with the plunger through a plunger bearing, and the plunger bearing adopts a needle bearing.
  • outer sidewall of the needle bearing or the inner sidewall of the groove is configured such that the gap between the needle bearing and the groove is larger at both ends in the axial direction than in the middle.
  • the depth of the groove in the axial direction of the plunger bearing is not less than 1/2 of the diameter of the plunger.
  • the plunger of the pump body is arranged in the horizontal direction and is perpendicular to the axis of the power output shaft of the motor.
  • the transmission mechanism is a gear box, and the smaller of the width and height of the gear box is 50-55 mm.
  • the diameter of the plunger is 10-16mm
  • the size of the pump body is 40.5-68.5mm perpendicular to the extending direction of the plunger and perpendicular to the axial direction of the power output shaft of the motor.
  • the flow rate of the pump body is 180-300L/h.
  • a pressure relief channel for connecting the water inlet channel and the water outlet channel is provided between the water inlet channel and the water outlet channel, the pressure relief channel and the water inlet channel are independently arranged and arranged side by side, and the pressure relief channel is provided with a pressure relief channel.
  • the pressure relief device includes a pressure relief valve plate and a first elastic member connected to and acting on the pressure relief valve plate, the pressure of the water outlet channel acts on the pressure relief device, so that the pressure relief valve plate closes and opens the pressure relief channel Switch between states.
  • the high pressure chamber has a water inlet of the high pressure chamber and a water outlet of the high pressure chamber, the water inlet channel is connected with the water inlet of the high pressure chamber through the water inlet check valve, and the water outlet channel is connected with the high pressure chamber through the water outlet check valve.
  • the water outlet is connected, and the cross-sectional area of the flow path between the water inlet check valve and the water inlet of the high-pressure chamber is not less than 35mm 2 .
  • the water inlet channel is provided with a water inlet valve, and the water inlet channel includes a water inlet section before the valve and a water outlet section after the valve, which are respectively arranged on both sides of the water inlet valve;
  • the water inlet valve includes a valve core arranged radially along the water inlet channel, a valve seat and a second elastic member, the valve seat has a cavity communicating with the water inlet section of the valve and the water outlet section after the valve, the valve core
  • the guiding movement is set in the cavity and has a control end.
  • the outer wall of the valve core is formed with a sealing section and a water tank.
  • the second elastic member acts on the valve core to make the valve core reset automatically when there is no external force at the control end.
  • the water-passing groove has an up-and-down symmetrical structure along the extending direction of the valve core, so that the force of the water pressure on the upper and lower sides of the water-passing groove is equal in magnitude and opposite in direction.
  • the transmission mechanism includes an eccentric shaft, the output end of the eccentric shaft is rotationally connected to the plunger through a plunger bearing, the pump body is formed with a bearing chamber for accommodating the plunger bearing, and a communication channel is opened on the pump body. Drain holes inside the bearing chamber and outside the pump body.
  • the pump body includes a pump casing
  • the transmission mechanism includes a transmission support mechanism
  • both the pump casing and the transmission support mechanism are made of plastic material.
  • the transmission mechanism is configured as a planetary gear transmission structure, including a planet carrier, a planetary gear set, an eccentric shaft, a bearing and a bearing positioning bracket, and the input and output ends of the eccentric shaft are respectively provided with bearings, and the bearings are installed On the bearing positioning bracket, the planetary gear set is rotatably mounted on the planetary bracket through the pin shaft, and the planetary bracket, the pin shaft, the eccentric shaft, the bearing and the bearing positioning bracket are connected by interference fit.
  • a planetary gear transmission structure including a planet carrier, a planetary gear set, an eccentric shaft, a bearing and a bearing positioning bracket, and the input and output ends of the eccentric shaft are respectively provided with bearings, and the bearings are installed On the bearing positioning bracket, the planetary gear set is rotatably mounted on the planetary bracket through the pin shaft, and the planetary bracket, the pin shaft, the eccentric shaft, the bearing and the bearing positioning bracket are connected by interference fit.
  • a hand-held high-pressure cleaning machine comprising a hand-held spray gun housing, a pump body, a transmission mechanism and a motor arranged in the hand-held spray gun housing;
  • the housing of the hand-held spray gun is formed with a water flow nozzle
  • the pump body includes a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel.
  • the plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow.
  • the water inlet channel and the water outlet channel are respectively connected to the high-pressure chamber.
  • the chambers are connected, and the water outlet channel is connected with the water flow nozzle;
  • the transmission mechanism includes a reducer, the motor is connected through the reducer and drives the plunger to reciprocate relative to the high-pressure chamber;
  • the motor is configured as an outer rotor brushless motor, the size of the motor in the axial direction of its power output shaft is 42-55mm, and the size from the rear edge of the motor to the front edge of the plunger in the axial direction of the motor power output shaft is 95mm ⁇ 110mm.
  • a plunger pump comprising:
  • the pump body includes a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel.
  • the plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow.
  • the water inlet channel and the water outlet channel are respectively connected to the high-pressure chamber. Connected;
  • the driving part outputs the rotational driving force through the power output shaft
  • the rated pressure output by the pump body is 3-7MPa
  • at least part of the cross-section of the pump body is cut by a plane passing through the plunger and perpendicular to the axial direction of the power output shaft of the drive member
  • the area is 33.6-59.6 cm 2 .
  • the input end of the eccentric shaft and the power output shaft of the driving member are arranged in parallel and on different axes, and the input end of the eccentric shaft and the power output shaft of the driving member have mutual interference sections in the axial direction , which is used to connect the input end of the eccentric shaft with the power output shaft of the driving member through the transmission assembly arranged in the radial plane.
  • the present invention rationally sets the pump body width, height, cross-sectional area, plunger diameter, eccentric wheelbase, motor length, transmission mechanism size and other parameters; , the output end of the eccentric shaft is housed in the groove of the plunger and the depth of the groove is not less than 1/2 of the diameter of the plunger, the input end of the eccentric shaft and the power output shaft of the motor are arranged on different axes Clothed transmission components transmission connection and other technical means; under the premise of satisfying the performance of the whole machine, the volume and weight of the plunger pump and the whole machine can be minimized; in addition, by increasing the water inlet check valve and the high-pressure chamber The cross-sectional area of the flow channel between the water inlets, the pressure relief channel and the water inlet channel are independently arranged and distributed side by side, which can effectively increase the flow rate of the pump body; thus, the pressure of the plunger pump can be increased to above 3Mpa and the flow rate can be increased to 180-300L/h, effectively reducing the volume of the plunger pump, realizing the
  • the plunger bearing of the present invention uses needle bearings, which are small in diameter and light in weight. Under the premise of satisfying the performance strength, the machine is minimized and the weight is minimized; in addition, through the cooperation between the needle bearing and the groove The surface is set so that the gap at both ends is greater than that in the middle, which can avoid the force on the end of the bearing; at the same time, by setting a drainage hole at the bearing cavity of the pump body, the water collected in the pump body cavity can be discharged, avoiding damage and failure of the plunger bearing, and improving product life. and reliability.
  • the water inlet valve of the present invention is arranged perpendicular to the water inlet direction, and the on-off of the water flow is controlled through the radial seal between the valve core and the valve seat, which can reduce the axial force of the water pressure on the valve core; at the same time, through Set the water tank as an up-and-down symmetrical structure along the extension direction of the valve core.
  • the force of the water pressure on the upper and lower sides of the water tank is equal in size and opposite in direction, and cancels each other out. Therefore, when the valve core is pulled, the water pressure has no resistance to the axial direction of the valve core.
  • the pump casing of the pump body of the present invention and the transmission support mechanism of the transmission mechanism are all made of plastic materials, so that the machine is the smallest, the weight is the lightest, and the cost is the lowest under the premise of satisfying product performance and life.
  • the planetary support, pin shaft, eccentric shaft, bearing and bearing positioning support of the present invention are connected by interference fit, the structure is simple, and the parts can be processed independently, which significantly simplifies the processing of transmission shafts, planetary support and other parts technology, which can effectively reduce the overall cost.
  • the present invention can reduce the size of the pump body in the direction of the extension of the plunger, and furthermore, the plunger can be arranged horizontally, so that the whole machine is left and right symmetrical, and the appearance is more coordinated and beautiful.
  • Fig. 1 is the sectional view of the single plunger pump of pressure 2.2MPa and flow rate 120L/h in the prior art
  • Fig. 2 is a top view of a single plunger pump with a pressure of 2.2MPa and a flow rate of 120L/h in Fig. 1;
  • Fig. 3 is a sectional view of a single plunger pump with a pressure of 2.4MPa and a flow rate of 210L/h in the prior art;
  • Fig. 4 is a top view of a single plunger pump with a pressure of 2.4MPa and a flow rate of 210L/h in Fig. 3;
  • Fig. 5 is a sectional view of a single plunger pump with a pressure of 5 MPa and a flow rate of 250 L/h in the prior art
  • Fig. 6 is a top view of a single plunger pump with a pressure of 5 MPa and a flow rate of 250 L/h in Fig. 5;
  • Fig. 7 is a cross-sectional view of a three-piston axial pump with a pressure of 3 MPa and a flow rate of 250 L/h in the prior art;
  • Fig. 8 is a top view of a three-piston axial pump with a pressure of 3 MPa and a flow rate of 250 L/h in Fig. 7;
  • Fig. 9 is a right view of the overall structure of the hand-held high-pressure cleaner according to the first embodiment of the present invention.
  • Fig. 10 is a sectional view of the main body of the complete machine according to the first embodiment of the present invention.
  • Fig. 11 is a cross-sectional view of the top structure of the plunger pump according to the first embodiment of the present invention.
  • Fig. 12 is a bottom view of the plunger pump according to the first embodiment of the present invention.
  • Fig. 13 is a rear view of part of the structure of the plunger pump according to the first embodiment of the present invention, in which the rear view structure of the gear box is shown;
  • FIG. 14 is a perspective view of the overall structure of the plunger pump according to the first embodiment of the present invention.
  • Fig. 15 is a perspective view of the exploded structure of the plunger pump according to the first embodiment of the present invention.
  • Fig. 16 is a front structural sectional view of the plunger pump according to the first embodiment of the present invention.
  • Fig. 17 is a cross-sectional view of the installation structure of the water inlet valve on the water inlet channel according to the first embodiment of the present invention, showing the working state when the water channel of the water inlet channel is disconnected;
  • Fig. 18 is a cross-sectional view of the installation structure of the water inlet valve on the water inlet channel according to the first embodiment of the present invention, which shows the working state of the water inlet channel when the waterway is connected;
  • Fig. 19 is a cross-sectional view of the installation structure connecting the transmission mechanism with the motor and the plunger according to the first embodiment of the present invention
  • Fig. 20 is an exploded perspective view of the transmission mechanism of the first embodiment of the present invention.
  • Fig. 21 is a partial structural sectional view of the plunger pump according to the first embodiment of the present invention, showing the connection structure between the plunger and the eccentric shaft;
  • Fig. 22 is a cross-sectional view of the needle bearing of the first embodiment of the present invention.
  • Fig. 23 is a left structural cross-sectional view of the plunger pump according to the first embodiment of the present invention, showing the drain hole structure;
  • Fig. 24 is a left view of the overall structure of the hand-held washing machine according to the second embodiment of the present invention.
  • Fig. 25 is a top view of a plunger pump according to a second embodiment of the present invention.
  • Fig. 26 is a left structural sectional view of the plunger pump according to the second embodiment of the present invention.
  • Fig. 27 is a sectional view of the three-dimensional structure of the plunger pump according to the second embodiment of the present invention.
  • Fig. 28 is a sectional view of the partial structure of the plunger pump according to the third embodiment of the present invention, showing the matching structure between the groove of the plunger and the needle bearing;
  • Fig. 29 is a cross-sectional view of the partial structure of the plunger pump according to the fourth embodiment of the present invention, which shows the matching structure between the groove of the plunger and the needle bearing.
  • Sealing section 3513. Water tank, 352. Valve seat, 353. Second elastic part, 354. Guide sleeve, 355. latch, 361. first seal, 362. second seal, 371. first guide sleeve, 372. second guide sleeve, 381. bearing cavity, 382. drainage hole.
  • the hand-held high-pressure cleaner includes a main body of the whole machine and a water outlet gun barrel 1 .
  • the main body of the whole machine includes a casing 2 and a plunger pump 3.
  • the plunger pump 3 includes a pump body 31, a motor 32 and a transmission mechanism 33.
  • the motor 32, the transmission mechanism 33 and the pump body 31 are installed in the casing 2.
  • the mechanism 33 is connected with the pump body 31 for driving the pump body 31 to run.
  • the pump body 31 is a plunger pump body, including a high pressure chamber 315 , a plunger 316 , a water inlet channel 317 and a water outlet channel 318 .
  • the high-pressure chamber 315 includes a first high-pressure chamber 3151 and a second high-pressure chamber 3152 respectively matched with two ends of the plunger 316 .
  • the plunger 316 can reciprocate relative to the first high-pressure chamber 3151 and the second high-pressure chamber 3152 to pressurize the water flow.
  • the water inlet channel 317 and the water outlet channel 318 communicate with the first high pressure chamber 3151 and the second high pressure chamber 3152 respectively.
  • the outer end of the water inlet channel 317 forms a water inlet 3171
  • the outer end of the water outlet channel 318 forms a water outlet 3181
  • the water inlet 3171 is used to connect to an external water source
  • the water outlet 3181 is used to connect to the water outlet barrel 1
  • the housing 2 is formed with a gun barrel interface 21 for connecting the water outlet gun barrel 1 at the front end of the water outlet 3181 of the pump body 31 , and the water outlet gun barrel 1 is connected to the gun barrel interface 21 .
  • the shell 2 and the water outlet gun tube 1 form a hand-held spray gun housing of a hand-held high-pressure cleaner.
  • the outer end of the water outlet gun tube 1 forms a water flow nozzle.
  • the water outlet channel 318 is in communication with the water flow nozzle.
  • the rated pressure output by the pump body 31 is 3-7Mpa, and the flow rate of the pump body is 180-300L/h.
  • the product of the size of the motor 32 in the axial direction of the power output shaft, the size of the pump body 31 in the direction of the extension of the plunger 316 and the width and height of the transmission mechanism, whichever is smaller, is 190-230 cm 3 .
  • the size of the motor 32 in the axial direction of its power output shaft is the main dimension that affects the overall size of the motor
  • the size of the pump body 31 in the extending direction of its plunger 316 is the main dimension that affects the overall size of the pump body
  • the transmission mechanism 33 is Gearbox, the gearbox includes a reducer, the smaller of the width and height of the gearbox corresponds to the diameter of the gearbox disc structure, due to the flexible design of the surrounding installation structure, this size is the main dimension that determines the overall size of the gearbox
  • the above-mentioned three dimensions determine the overall size of the motor 32, the pump body 31 and the gear box respectively, and jointly affect the overall size of the plunger pump 3.
  • the pump body 31 is at least 70 in the cross-section of the plane passing through the plunger 316 and perpendicular to the axial direction of the power output shaft of the motor (that is, the plane formed by the direction b and the direction c in FIGS.
  • the % cross-sectional area is 33.6-59.6 cm 2 .
  • the motor 32 is an outer rotor brushless motor, the rotating speed of the motor 32 is 10000r/min-30000r/min, and the motor 32 is in the axial direction of its power output shaft (that is, as shown in Fig. 11 and Fig.
  • the length L3 is 42-55mm;
  • the plunger 316 of the pump body 31 is arranged in the horizontal direction, and is perpendicular to the axial direction of the power output shaft of the motor 32, and the pump body 31 is in its
  • the size of the plunger 316 in the direction of extension corresponds to the width of the pump body 31, the width of the pump body 31 is greater than the height of the pump body 31, and the width W of the pump body is 75 -109.5mm, the height H of the pump body is 40.5-68.5mm, and the height of the pump body is the size of the pump body in the direction indicated by c in Figure 9 and Figure 13; the height of the gear box is less than the width, and the gear box
  • the height E is 50-55mm, and the height of the gearbox is the size of the gearbox in the direction indicated by c in Fig. 9 and Fig. 13 .
  • the main body of the whole machine is configured as follows: in the axial direction of the power output shaft of the motor 32 (that is, in the direction shown by a in Fig. 9 and Fig. 11), the rear edge of the motor 32
  • the ratio of the length L1 to the front edge of the plunger 316 and the length L2 from the rear edge of the casing 2 to the front edge of the barrel interface 21 is 0.2-0.35; wherein: the length L1 from the rear edge of the motor 32 to the front edge of the plunger 316 is 95 -110mm, the length L2 from the rear edge of the casing 2 to the front edge of the barrel interface 21 is 320-340mm.
  • the rated pressure output by the pump body 31 is 3-6MPa
  • the flow rate is 180-220L/h
  • the length L3 of the motor 32 is 42-50mm
  • the width W of the pump body 31 is 75-80mm
  • the height of the gear box is E 50-55mm.
  • the length L1 from the rear edge of the motor 32 to the front edge of the plunger 316 is 95-105mm
  • the length L2 from the rear edge of the casing 2 to the front edge of the barrel interface 21 is 325- 335mm
  • the length L4 after the overall main body is connected to the water gun tube 1 is 800-900mm.
  • the transmission mechanism 33 includes an eccentric shaft 332, and a groove 3161 for connecting the eccentric shaft 332 is provided in the middle of the plunger 316, and the depth of the groove 3161 is not less than 1/2 of the diameter of the plunger.
  • the input end 3321 of the eccentric shaft is in drive connection with the power output shaft of the motor 32
  • the output end 3322 of the eccentric shaft is at least partially accommodated in the groove 3161 and is rotationally connected with the plunger 316 through the plunger bearing 336 .
  • the transmission mechanism 33 converts the rotational motion of the motor 32 into the linear reciprocating motion of the plunger 316 .
  • the diameter of the plunger 316 is 10-16mm, and the eccentricity of the eccentric shaft 332 is 3-6mm.
  • the diameter of the plunger 316 is 10-14mm, the eccentricity of the eccentric shaft 332 is 3-4.5mm, the stroke of the plunger 316 is 7-8mm; the speed of the motor 32 is 15000-20000r/ min, the transmission ratio is 7-8, and the volumetric efficiency is 80-90%.
  • the pump body 31 also includes a pump body 311, a pump head 312, a left pump cover 313, a right pump cover 314 and an inlet pipe fitting 3110, and the pump body 311 is connected with the pump head 312 respectively.
  • the left pump cover 313 and the right pump cover 314 are connected, and the first high-pressure chamber 3151 and the second high-pressure chamber 3152 are formed between the pump body 311, the left pump cover 313, the right pump cover 314 and the plunger 316,
  • the water outlet channel 318 is formed between the pump body 311 and the pump head 312
  • the water inlet channel 317 is formed between the pump body 311 and the water inlet pipe 3110
  • a plunger cavity for accommodating the plunger 316 is also formed in the pump body 311 319.
  • Both the first high-pressure chamber 3151 and the second high-pressure chamber 3152 have a water inlet of the high-pressure chamber and a water outlet of the high-pressure chamber.
  • the high-pressure chamber water inlets of the two high-pressure chambers 3152 are connected, and the water outlet channel 318 is respectively connected with the high-pressure chamber water outlets of the first high-pressure chamber 3151 and the second high-pressure chamber 3152 through the water outlet check valve 3182 .
  • the water inlet check valve 3172 can be opened, raised and closed as the water pressure in the high pressure chamber 315 decreases.
  • the water outlet check valve 3182 can be closed and opened as the water pressure in the high pressure chamber 315 decreases and rises.
  • the cross-sectional area of the flow path between the water inlet check valve and the water inlet of the high-pressure chamber is about 19 mm 2 , which is relatively small, which limits the liquid water entering the high-pressure chamber through the water inlet check valve. speed.
  • the cross-sectional area of the flow channel between the water inlet check valve 3172 and the water inlet of the high-pressure chamber is not less than 35 mm 2 , which can increase the water inlet flow.
  • the specific structure and installation method of the water inlet check valve 3172 and the water outlet check valve 3182 are prior art, and will not be repeated here.
  • the water inlet check valve 3172 and the water outlet check valve 3182 can be formed by connecting a section of spring and a valve body, and the valve body is connected to the end of the spring, but it is not limited thereto.
  • the plunger 316 reciprocates between a first position and a second position, the first position is the extreme position where the plunger 316 moves toward the first high pressure chamber 3151, and the second position is the plunger 316 moves toward the second The limit position of high pressure chamber 3152 direction movement.
  • the plunger 316 moves from the first position to the second position, the volume of the first high-pressure chamber 3151 gradually increases, and the water pressure drops.
  • the water inlet check valve 3172 corresponding to the first high-pressure chamber 3151 opens, and the water outlet The one-way valve 3182 is closed, and the liquid water flows into the first high-pressure chamber 3151 from the water inlet channel 317; at the same time, the volume of the second high-pressure chamber 3152 gradually decreases, and the liquid water in the second high-pressure chamber 3152 is pressurized.
  • the water inlet check valve 3172 corresponding to the second high pressure chamber 3152 is closed, the water outlet check valve 3182 is opened, and the liquid water flows out from the second high pressure chamber 3152 to the water outlet channel 318 .
  • liquid water flows out from the first high-pressure chamber 3151 to the water outlet channel 318, flows into the second high-pressure chamber 3152 from the water inlet channel 317; and so on.
  • the plunger 316 alternately compresses or releases the first high-pressure chamber 3151 and the second high-pressure chamber 3152, and the water sequentially passes through the water inlet channel 317, the first high-pressure chamber 3151 or the second high-pressure chamber 3152, and the water outlet channel 318, finally forming a high pressure
  • the water flow is sprayed out by the water outlet gun tube 1 of the hand-held washing machine for cleaning operations.
  • a pressure relief device connected to the water inlet channel and the water outlet channel is provided, which is used to release the pressure when the pressure in the water outlet channel is too high, so as to improve the safety performance of the plunger pump.
  • the pressure relief device is at least partly located at the inlet In the water channel, water inlet resistance is formed, so it cannot meet the large flow demand of the plunger pump.
  • the pressure channel 341 and the water inlet channel 317 are independently arranged and distributed side by side in parallel, and a pressure relief device 342 is provided in the pressure relief channel 341 .
  • the pressure relief device 342 includes a pressure relief valve plate 3421 and a first elastic member 3422 connected to and acting on the pressure relief valve plate 3421.
  • the pressure of the water outlet channel 318 acts on the pressure relief device 342, so that the pressure relief valve plate 3421 is closed and opened.
  • the states of the pressure relief channel 341 are switched.
  • the first elastic member 3422 is a spring.
  • the structures of the pressure relief device 342 and the first elastic member 3422 are not limited thereto.
  • the water inlet channel 317 is provided with a water inlet valve 35, and the water inlet channel 317 includes a water inlet section 3173 and a water outlet section 3174 located on both sides of the water inlet valve 35;
  • the water valve 35 includes a valve core 351 radially arranged along the water inlet channel 317, a valve seat 352, a second elastic member 353, a guide sleeve 354 and a bolt 355.
  • the cavity connected to the section 3174, the valve core 351 is set in the cavity for guiding movement and has a control end 3511, and the control end 3511 is connected and linked with the trigger 24 of the hand-held high-pressure cleaner.
  • the outer wall of the spool 351 is formed with a sealing section 3512 and a water-passing groove 3513.
  • the second elastic member 353 acts on the spool 351 to make the spool 351 reset automatically when there is no external force at the control end 3511, and the valve is controlled through the control end 3511.
  • the core 351 moves relative to the valve seat 352, so that the water section 3173 before the valve and the water outlet section 3174 after the valve are connected through the water tank 3513 or sealed by the sealing section 3512, thereby controlling the gap between the water section 3173 before the valve and the water outlet section 3174 after the valve The continuity of the waterway.
  • the water passing groove 3513 has a symmetrical structure up and down along the extending direction of the valve core 351 , so that the force of water pressure on the upper and lower sides of the water passing groove 3513 is equal in magnitude and opposite in direction.
  • the guide sleeve 354 is installed in the cavity of the valve seat 352, and the outside is limited by the latch 355 to prevent it from coming out. play a guiding role.
  • the second elastic member 353 is a spring. As shown in Figure 17, when the spool 351 is in the initial position, the water pressure acts on the spool 351 to pass through the water tank 3513.
  • the upper and lower forces are equal in magnitude and opposite in direction, and cancel each other out, so that when the spool 351 is pulled As shown in Figure 18, when the spool 351 is opened, the flow path is opened, and the water pressure still has no resistance to the axial direction of the spool 351. At this time, the trigger 24 is released, and the spool 351 will be on the second elastic member 353 Return to the initial position under the force of the spring. In this process, when the trigger 24 is pulled to pull the spool 351, only the spring force and the frictional force need to be overcome, and it is not hindered by the water pressure, so that the operation is more labor-saving and the comfort of the product can be improved.
  • the structure of the water inlet valve 35 is applicable to any closing gun linkage device, not limited to the trigger 24 .
  • a first sealing member 361 and a second sealing member 362 are arranged in the plunger cavity 319, and the first sealing member 361 and the plunger 316 form a first sealing structure to prevent liquid water in the first high-pressure chamber 3151 from entering into the In the space where the transmission mechanism 33 is located, the second sealing member 362 and the plunger 316 form a second sealing structure to prevent the liquid water in the second high-pressure chamber 3152 from entering the space where the transmission mechanism 33 is located, and prevent the internal parts of the transmission mechanism 33 from being rusted when exposed to water.
  • the first sealing member 361 and the second sealing member 362 may be structures such as sealing rings.
  • the inner wall of the plunger chamber 319 is formed with a first guide sleeve 371 on the side close to the first high-pressure chamber 3151, and a second guide sleeve 372 is formed on the side close to the second high-pressure chamber 3152.
  • the plunger 316 guides The movement is arranged between the first guide sleeve 371 and the second guide sleeve 372.
  • the first guide sleeve 371 and the second guide sleeve 372 are used to guide the plunger 316 to move between the first and second positions, so as to improve the movement of the plunger 316.
  • the wear of the plunger 316 during reciprocating motion can also be reduced.
  • the installation position of the guide sleeve is too close to the middle of the plunger, and the distance between the guide sleeve and the top end of the plunger is too large, which is not conducive to reducing the wear of the plunger, and the guide precision is not enough.
  • the first guide sleeve 371 is arranged close to the first high-pressure chamber 3151
  • the second guide sleeve 372 is arranged close to the second high-pressure chamber 3152 , so that the guiding precision can be improved and the wear of the plunger 316 can be reduced.
  • the motor 32 drives the plunger 316 to reciprocate through the eccentric shaft 332, pressurizing the liquid water in the first high-pressure chamber 3151 or the second high-pressure chamber 3152 at both ends of the plunger 316, and the water in the reciprocating process
  • the pressure reaction force causes the plunger bearing 336 between the eccentric shaft 332 and the plunger 316 to bear a large dynamic load.
  • the needle roller bearing is equipped with thin and long rollers (the length of the roller is 3-10 times the diameter, and the diameter is generally not more than 5mm), so the radial structure is compact, and its inner diameter size and load capacity are the same as other types of bearings. Minimum outside diameter. In order to reduce the volume of the plunger pump 3 , in this embodiment, as shown in FIG. 21 and FIG.
  • the plunger bearing 336 adopts a needle bearing, which is beneficial to reduce the length of the plunger 316 .
  • Needle bearings are used to achieve the same pressure of 3-7MPa, and the volume of the pump body 31 is 40-50% smaller than that of the pump body using ball bearings, achieving the effect of small volume and high load.
  • the mating surface between the plunger 316 and the output end 3322 of the eccentric shaft is a regular plane, the verticality of the pump body 31 is caused by the machining tolerance and assembly error of the pump body 31, as well as the wear of the pump body during long-term use.
  • the outer wall of the needle roller bearing is set so that the gap between the needle roller bearing and the groove 3161 is larger than the arc-shaped curved surface 3361 in the middle at both ends in the axial direction, so as to ensure that the needle roller bearing and the plunger 316 The mating surface of the needle bearing is centered to avoid wear on the tip of the needle roller bearing.
  • a sliding grinding sheet 339 is provided between the needle bearing and the second bearing 335, thereby reducing the friction on the end surface between the needle bearing and the second bearing 335, reducing the damage of the needle bearing caused by friction, and improving the rolling capacity. The service life of the needle bearing.
  • the pump body 31 is formed with a bearing cavity 381 for accommodating the plunger bearing 336 , and the pump body 31 is provided with a drainage hole 382 connecting the inside of the bearing cavity 381 and the outside of the pump body 31 at the bearing cavity 381 .
  • the plunger 316 is arranged horizontally
  • the drainage hole 382 is arranged at the bottom of the housing 2
  • the drainage hole 382 is arranged perpendicular to the plunger 316 .
  • the transmission mechanism 33 adopts a planetary gear transmission structure, including a planet carrier 331 , a planetary gear set, an eccentric shaft 332 , a bearing and a bearing positioning bracket 333 .
  • the eccentric shaft 332 includes an eccentric shaft input end 3321, an eccentric shaft output end 3322, and an intermediate connecting portion 3323 connected between the eccentric shaft input end 3321 and the eccentric shaft output end 3322 and coaxially arranged with the eccentric shaft input end 3321.
  • the shaft input end 3321, the intermediate connection portion 3323 and the eccentric shaft output end 3322 are respectively provided with a first bearing 334, a second bearing 335 and a plunger bearing 336 to position the eccentric shaft 332 in the pump body 31 relatively stably.
  • the first bearing 334 and the second bearing 335 are installed on the bearing positioning bracket 333, and the planetary gear set includes three planetary gears 337 meshed in sequence, and the three planetary gears 337 are rotatably mounted on the planetary bracket 331 through a pin shaft 338 .
  • the planet carrier 331 , the pin shaft 338 , the eccentric shaft 332 , the first bearing 334 , the second bearing 335 , the plunger bearing 336 and the bearing positioning bracket 333 are connected by interference fit.
  • the parts can be processed independently, which significantly simplifies the processing technology of transmission shafts, planetary supports and other parts, and can effectively reduce the overall cost.
  • the fixed sleeve at the outer end of the power output shaft of the motor 32 is provided with a sun gear 321.
  • the sun gear 321 is meshed with the first-stage planetary gear 337 in the planetary gear set, and the input end of the eccentric shaft is connected with the third-stage planetary gear 337 for synchronous rotation.
  • the pump body 31 includes a pump casing, which is formed by connecting the pump body 311, the pump head 312, the left pump cover 313, the right pump cover 314 and the water inlet pipe 3110;
  • the transmission mechanism includes a transmission support mechanism, including the The planetary bracket 331 and the bearing positioning bracket 333;
  • the pump casing of the pump body 31 and the transmission support mechanism of the transmission mechanism 33 are all made of plastic materials, and the machine is made the smallest and the weight is the smallest under the premise of satisfying product performance and life. Lightweight and lowest cost.
  • the weight of the bare metal does not exceed 2.2Kg.
  • the main body of the whole machine also includes a handle 22 formed on the casing 2 for holding, a switch part rotatably mounted on the casing 2 for opening and closing the hand-held high-pressure cleaner and configured on the casing 2 on the power supply unit 23 for power supply.
  • the handle 22 is located on the rear side of the housing 2, and the power supply unit 23 is arranged on the front side of the handle 22.
  • the power supply unit 23 is electrically connected to the motor 32 of the plunger pump 3, and there is also a device between the power supply unit 23 and the motor 32 to control the motor.
  • a contact switch (not shown) for starting or stopping, and at least part of a cable (not shown) for electrical connection are arranged inside the handle 22 .
  • the power supply unit 23 can be a battery pack or a power cord used to connect to the commercial power.
  • the switch part is arranged between the handle 22 and the power supply part 23 , and the switch part is linked with the valve core 351 of the water inlet valve 35 .
  • the power supply unit 23 is a battery pack, and the switch element is a trigger 24 .
  • the difference between the hand-held high-pressure cleaner of the second embodiment of the present invention and the first embodiment is that:
  • the water inlet valve 35 is not provided on the water inlet channel 317 in this embodiment.
  • the transmission mechanism 33 is an external meshing transmission structure.
  • the eccentric shaft input end 3321 is arranged in parallel with the power output shaft of the motor 32 and is located on different axes.
  • the transmission assembly arranged in a plane connects the input end 3321 of the eccentric shaft with the power output shaft of the motor 32 to save space in the axial direction.
  • the transmission assembly may include a first gear 3301 and a second gear 3302 that mesh with each other.
  • the first gear 3301 is fixedly sleeved on the power output shaft of the motor 32
  • the second gear 3302 is fixedly sleeved on the input end 3321 of the eccentric shaft.
  • the motor 32 and the power output shaft of the motor 32 drive the first gear 3301 to rotate synchronously, and then drive the second gear 3302 and the eccentric shaft 332 to rotate.
  • the structure of the transmission assembly is not limited thereto, other gears may be provided between the first gear 3301 and the second gear 3302 , and the first gear 3301 and the second gear 3302 may also be internally meshed.
  • the pump body 31 is arranged longitudinally, that is, the plunger 316 is arranged longitudinally, and the drainage holes 382 are opened on both sides of the casing 2, and the drainage holes 382 are vertically arranged to the plunger.
  • the power supply unit 23 is connected under the handle 22 .
  • the rated pressure output by the pump body 31 is 3-6MPa
  • the flow rate of the pump body is 200-250L/h
  • the pump body 31 is passed through the plunger 316 and connected with the power output of the motor 32
  • more than 70% of the cross-sectional area is 33.6-59.6cm 2 (due to the unevenness of the outer edge of the pump body, or the surface of the pump body.
  • the height H of the pump body and the width W of the pump body are not fixed values, which affect the cross-sectional area of the pump body); the height H of the pump body 31 is 79.2-98.5mm, and the width W is 40.5-60.5mm; the eccentricity of the eccentric shaft 332 is 3.1-3.5mm; the stroke of the plunger 316 is 6.2-7.0mm.
  • the difference between the hand-held high-pressure cleaning machine of the third embodiment of the present invention and the first embodiment is that: in order to ensure that the mating surface of the needle roller bearing and the plunger 316 is stressed at the center, and to avoid the tip wear of the needle roller bearing, this
  • the two axial ends of the inner wall of the plunger groove 3161 are respectively chamfered, so that the two ends of the needle roller bearing do not contact the inner wall of the plunger groove 3161, so as to avoid stress on the tip of the needle roller bearing.
  • a first slope 3162 is formed at the opening end of the plunger groove 3161
  • a second slope 3163 is formed at the end away from the opening.
  • the difference between the hand-held high-pressure cleaning machine of the fourth embodiment of the present invention and the first embodiment is that: in order to ensure that the mating surface of the needle roller bearing and the plunger 316 is stressed at the center, and to avoid the tip wear of the needle roller bearing, this In the embodiment, the axially outer end of the inner wall of the plunger groove 3161 is chamfered, and the inner end is grooved, so that the two ends of the needle roller bearing do not contact the inner wall of the plunger groove 3161, and the tip of the needle roller bearing is avoided. Force. Specifically, a third slope 3164 is formed at the opening end of the plunger groove 3161 , and an annular groove 3165 is formed at the end away from the opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

A plunger pump (3) and a hand-held high-pressure cleaning machine, the hand-held high-pressure cleaning machine comprising a pump body (31), a motor (32) and a transmission mechanism (33); the pump body (31) comprises a high-pressure chamber (315), a plunger (316), a water intake channel (317) and a water outlet channel (318); the plunger (316) may reciprocate relative to the high-pressure chamber (315), and the motor (32) drives, by means of the transmission mechanism (33), the pump body (31) to operate; the rated pressure outputted by the pump body (31) is 3-7 Mpa, the product of the size of the motor (32) in the axial direction of a power output shaft thereof, the size of the pump body (31) in the extension direction of the plunger (316) thereof and the smaller one of the width and height of the transmission mechanism (33) is 190-230 cm3; and the motor (32) is an outer rotor brushless motor.

Description

一种柱塞泵及手持式高压清洗机A plunger pump and a hand-held high-pressure cleaner 技术领域technical field
本发明涉及清洗设备技术领域，特别是涉及一种柱塞泵及手持式高压清洗机。The invention relates to the technical field of cleaning equipment, in particular to a plunger pump and a hand-held high-pressure cleaner.
背景技术Background technique
随着社会的发展与科技的进步，手持式清洗机作为一种清洗装置，越来越广泛地应用于人们的生活中，为人们的生活带来了极大便利。手持式清洗机可用于清洗汽车、玻璃门窗、庭院道路、泳池、宠物等，具有高效安全、使用方便的特性。现有手持式清洗机,核心模块为机芯泵，包括柱塞泵、传动机构和电机。With the development of society and the advancement of science and technology, hand-held cleaning machines, as a cleaning device, are more and more widely used in people's lives, bringing great convenience to people's lives. The hand-held cleaning machine can be used to clean cars, glass doors and windows, garden roads, swimming pools, pets, etc. It is efficient, safe and easy to use. The core module of the existing hand-held cleaning machine is the core pump, including the plunger pump, transmission mechanism and motor.
现有技术中，如图1和图2所示，3MPa以下的手持式清洗机的机芯泵大多采用径向柱塞泵，压力2.2MPa且流量120L/h的单柱塞泵的泵高H为79.2mm，泵宽W为45.5mm(其中，以柱塞延伸方向上的尺寸为高度、垂直于柱塞延伸方向上的尺寸为宽度)；如图3和图4所示，压力2.4MPa且流量210L/h的单柱塞泵的泵高H为100.6mm，泵宽W为45.5mm；在其结构的基础上改进以将压力提升至5MPa且流量提升至250L/h时，如图5和图6所示，单柱塞泵的泵高H、泵宽W增加幅度很大，导致体积过大，重量大，易用性、便携性差，用户体验感不好，无法满足手持式清洗机轻巧的需求。另外，如图7和图8所示，市场上3MPa以上的手持式清洗机的机芯泵大多采用轴向多柱塞泵，压力3MPa且流量250L/h的三柱塞轴向泵的泵高H为67.4mm，泵宽W为71.4mm，但是，三柱塞轴向泵的泵长过大，也无法满足手持式清洗机轻巧的需求。In the prior art, as shown in Figure 1 and Figure 2, most of the core pumps of hand-held cleaning machines below 3MPa use radial plunger pumps, and the pump height H of a single plunger pump with a pressure of 2.2MPa and a flow rate of 120L/h is 79.2mm, and the pump width W is 45.5mm (wherein, the dimension in the extending direction of the plunger is the height, and the dimension perpendicular to the extending direction of the plunger is the width); as shown in Figure 3 and Figure 4, the pressure is 2.4MPa and The pump height H of the single plunger pump with a flow rate of 210L/h is 100.6mm, and the pump width W is 45.5mm; on the basis of its structure, it is improved to increase the pressure to 5MPa and the flow rate to 250L/h, as shown in Figure 5 and As shown in Figure 6, the pump height H and pump width W of the single plunger pump increase greatly, resulting in excessive volume, heavy weight, poor usability and portability, and poor user experience, which cannot meet the needs of hand-held cleaning machines. demand. In addition, as shown in Figure 7 and Figure 8, most of the core pumps of hand-held cleaning machines above 3MPa on the market use axial multi-piston pumps, and the pump height of a three-piston axial pump with a pressure of 3MPa and a flow rate of 250L/h H is 67.4mm, and the pump width W is 71.4mm. However, the pump length of the three-piston axial pump is too large, which cannot meet the needs of the hand-held cleaning machine.
为此，亟需探索在机芯泵的压力提升至3Mpa以上且流量提升至180-300L/h时，如何降低机芯泵体积，实现手持式清洗机轻巧、便携、重量轻的特点，以提高手持式清洗机的操作舒适度。For this reason, it is urgent to explore how to reduce the volume of the core pump when the pressure of the core pump is increased to above 3Mpa and the flow rate is increased to 180-300L/h, so as to realize the characteristics of lightness, portability and light weight of the hand-held cleaning machine, so as to improve Operating comfort of hand washing machines.
同时，现有技术的手持式清洗机还存在如下缺陷：Simultaneously, also there is following defect in the hand-held washing machine of prior art:
1)进水通道的进水阀沿进水方向设置，进水阀阀芯受备压水和较大弹簧力作用，使得通过扳机拉动阀芯所需的操作力较大；1) The water inlet valve of the water inlet channel is set along the water inlet direction, and the valve core of the water inlet valve is affected by the pressure water and the large spring force, so that the operating force required to pull the valve core through the trigger is relatively large;
2)现有通过行星齿轮传动的电机泵，行星架与传动轴为一体式结构，结构复杂，零件加工工艺难度大，成本高；2) In the existing motor pumps driven by planetary gears, the planetary frame and the transmission shaft are integrated, the structure is complicated, the processing technology of the parts is difficult, and the cost is high;
3)现有单柱塞电机泵柱塞轴承使用深沟球轴承，如图1、3、5所示，当使用在高压力电机泵上时，所选用深沟球轴承尺寸较大，使整个泵体外形尺寸偏大、重量加大；3) The plunger bearings of existing single plunger motor pumps use deep groove ball bearings, as shown in Figures 1, 3, and 5. When used in high-pressure motor pumps, the selected deep groove ball bearings are larger in size, so that the entire The overall size of the pump body is too large and the weight is increased;
4)现有电机泵泵体腔内为封闭腔体，机器长时间运行后柱塞表面的水颗粒会在泵体腔内聚集，水颗粒越集越多后流入到柱塞轴承中，当轴承为轴承钢时，遇水易生锈，生锈后会损坏轴承，降低轴承寿命；4) The pump body cavity of the existing motor pump is a closed cavity. After the machine runs for a long time, the water particles on the surface of the plunger will accumulate in the pump body cavity. When it is made of steel, it is easy to rust when exposed to water, which will damage the bearing and reduce the life of the bearing;
5)现有电机泵电机均为内转子电机，体积大、重量大，进而增加了手持式清洗机的体积和重量；5) The existing motors and pump motors are all internal rotor motors, which are large in size and heavy in weight, which increases the volume and weight of the hand-held washing machine;
6)现有电机泵泵体、泵盖、齿轮箱及泵头在3MPa以上时为铝压铸材质，成本高、重量大，且铝件压铸后还要后加工，所以成本更高。6) The pump body, pump cover, gear box and pump head of the existing motor pump are made of aluminum die-casting material when the pressure is above 3MPa, which is high in cost and heavy in weight, and post-processing is required after the aluminum parts are die-casted, so the cost is higher.
7)高压清洗机进水流道和泄压阀设置在同一流道上，如图1所示，泄压阀部分位于进水流道内，形成进水阻力，满足不了300L/h大流量的需求。7) The water inlet channel and the pressure relief valve of the high-pressure cleaner are set on the same channel. As shown in Figure 1, the pressure relief valve is partly located in the water inlet channel, forming water inlet resistance, which cannot meet the demand for a large flow rate of 300L/h.
发明内容Contents of the invention
本发明的目的在于提供一种效率高、体积小、重量轻、操作舒适度高的柱塞泵及手 持式高压清洗机。The object of the present invention is to provide a plunger pump and a hand-held high-pressure cleaner with high efficiency, small size, light weight and high operating comfort.
本发明采用如下技术方案：The present invention adopts following technical scheme:
一种手持式高压清洗机，包括整机主体，整机主体包括泵体、电机及传动机构；A hand-held high-pressure cleaning machine, including a main body of the whole machine, the main body of the whole machine includes a pump body, a motor and a transmission mechanism;
所述电机通过传动机构与泵体连接，用于驱动泵体运转；The motor is connected to the pump body through a transmission mechanism to drive the pump body to run;
所述泵体为柱塞泵泵体，包括高压腔室、柱塞、进水通道及出水通道，所述柱塞能够相对高压腔室做往复运动以对水流进行加压，所述进水通道和出水通道分别与高压腔室相连通；The pump body is a plunger pump body, including a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel. The plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow. The water inlet channel and the water outlet channel are respectively connected with the high-pressure chamber;
所述泵体输出的额定压力为3-7Mpa，所述电机在其动力输出轴轴向上的尺寸、所述泵体在其柱塞延伸方向上的尺寸及所述传动机构的宽度和高度中尺寸较小者的乘积为190-230cm 3。 The rated pressure output by the pump body is 3-7Mpa, the size of the motor in the axial direction of its power output shaft, the size of the pump body in the direction of its plunger extension, and the width and height of the transmission mechanism The product of the smaller size is 190-230cm 3 .
进一步地，所述整机主体还包括外壳，所述电机、传动机构及泵体安装于所述外壳内；Further, the main body of the whole machine also includes a casing, and the motor, transmission mechanism and pump body are installed in the casing;
所述外壳在所述泵体的出水通道前端形成有用于连接出水枪管的枪管接口；The shell is formed with a gun barrel interface for connecting the water outlet gun tube at the front end of the water outlet channel of the pump body;
所述整机主体配置为：在电机动力输出轴轴向上，由电机后缘至柱塞前缘的长度与由外壳后缘至枪管接口前缘的长度的比值为0.2-0.35。The main body of the complete machine is configured as follows: in the axial direction of the power output shaft of the motor, the ratio of the length from the rear edge of the motor to the front edge of the plunger to the length from the rear edge of the shell to the front edge of the barrel interface is 0.2-0.35.
进一步地，所述电机配置为外转子无刷电机，长度为42-55mm。Further, the motor is configured as an outer rotor brushless motor with a length of 42-55 mm.
进一步地，所述泵体在其柱塞延伸方向上的尺寸为75-109.5mm。Further, the dimension of the pump body in the extending direction of the plunger is 75-109.5mm.
进一步地，所述高压腔室包括分别与所述柱塞的两端相对应配合设置的第一高压腔室和第二高压腔室；所述传动机构包括偏心轴，偏心轴输入端与电机动力输出轴传动连接，偏心轴输出端与柱塞转动连接，偏心轴的偏心距为3-6mm；所述传动机构将电机的旋转运动转化为柱塞的直线往复运动以使柱塞交替压缩或释放第一、第二高压腔室。Further, the high-pressure chamber includes a first high-pressure chamber and a second high-pressure chamber respectively matched with the two ends of the plunger; the transmission mechanism includes an eccentric shaft, and the input end of the eccentric shaft is connected to the motor power. The output shaft is connected by transmission, the output end of the eccentric shaft is connected to the plunger in rotation, and the eccentricity of the eccentric shaft is 3-6 mm; the transmission mechanism converts the rotational motion of the motor into the linear reciprocating motion of the plunger so that the plunger is alternately compressed or released The first and second high pressure chambers.
进一步地，所述传动机构包括偏心轴，偏心轴输入端与电机动力输出轴传动连接，柱塞中部开设有用于连接偏心轴输出端的凹槽，偏心轴输出端至少部分收容在所述凹槽内并与柱塞通过柱塞轴承转动连接，所述柱塞轴承采用滚针轴承。Further, the transmission mechanism includes an eccentric shaft, the input end of the eccentric shaft is connected to the power output shaft of the motor, a groove is provided in the middle of the plunger for connecting the output end of the eccentric shaft, and the output end of the eccentric shaft is at least partially accommodated in the groove And it is rotationally connected with the plunger through a plunger bearing, and the plunger bearing adopts a needle bearing.
进一步地，所述滚针轴承外侧壁或凹槽内侧壁配置为使滚针轴承与凹槽之间间隙在轴向上两端大于中部。Further, the outer sidewall of the needle bearing or the inner sidewall of the groove is configured such that the gap between the needle bearing and the groove is larger at both ends in the axial direction than in the middle.
进一步地，所述凹槽在所述柱塞轴承轴向上的深度不小于所述柱塞的直径尺寸的1/2。Further, the depth of the groove in the axial direction of the plunger bearing is not less than 1/2 of the diameter of the plunger.
进一步地，所述泵体的柱塞沿水平方向布置，并与所述电机的动力输出轴轴向相垂直。Further, the plunger of the pump body is arranged in the horizontal direction and is perpendicular to the axis of the power output shaft of the motor.
进一步地，所述传动机构为齿轮箱，所述齿轮箱的宽度和高度中尺寸较小者为50-55mm。Further, the transmission mechanism is a gear box, and the smaller of the width and height of the gear box is 50-55 mm.
进一步地，所述柱塞的直径为10-16mm，泵体在垂直于柱塞延伸方向并垂直于电机动力输出轴轴向上的尺寸为40.5-68.5mm。Further, the diameter of the plunger is 10-16mm, and the size of the pump body is 40.5-68.5mm perpendicular to the extending direction of the plunger and perpendicular to the axial direction of the power output shaft of the motor.
进一步地，所述泵体的流量为180-300L/h。Further, the flow rate of the pump body is 180-300L/h.
进一步地，所述进水通道与出水通道之间设置有用于连通进水通道和出水通道的泄压通道，泄压通道与进水通道分别独立设置且并排分布，泄压通道内设置有泄压装置，泄压装置包括泄压阀片及连接并作用于泄压阀片的第一弹性件，出水通道压力作用于泄压装置，使所述泄压阀片在封闭和打开所述泄压通道状态间切换。Further, a pressure relief channel for connecting the water inlet channel and the water outlet channel is provided between the water inlet channel and the water outlet channel, the pressure relief channel and the water inlet channel are independently arranged and arranged side by side, and the pressure relief channel is provided with a pressure relief channel. device, the pressure relief device includes a pressure relief valve plate and a first elastic member connected to and acting on the pressure relief valve plate, the pressure of the water outlet channel acts on the pressure relief device, so that the pressure relief valve plate closes and opens the pressure relief channel Switch between states.
进一步地，所述高压腔室具有高压腔室进水口和高压腔室出水口，进水通道通过进水单向阀与高压腔室进水口相连通，出水通道通过出水单向阀与高压腔室出水口相连通，所述进水单向阀与所述高压腔室进水口之间的流道横截面积不小于35mm 2。 Further, the high pressure chamber has a water inlet of the high pressure chamber and a water outlet of the high pressure chamber, the water inlet channel is connected with the water inlet of the high pressure chamber through the water inlet check valve, and the water outlet channel is connected with the high pressure chamber through the water outlet check valve. The water outlet is connected, and the cross-sectional area of the flow path between the water inlet check valve and the water inlet of the high-pressure chamber is not less than 35mm 2 .
进一步地，所述进水通道上设置有进水阀，进水通道包括分设于进水阀两侧的阀前进水段和阀后出水段；Further, the water inlet channel is provided with a water inlet valve, and the water inlet channel includes a water inlet section before the valve and a water outlet section after the valve, which are respectively arranged on both sides of the water inlet valve;
所述进水阀包括沿进水通道径向设置的阀芯、阀座和第二弹性件，所述阀座具有与阀前进水段和阀后出水段相连通的空腔，所述阀芯导向移动设置于所述空腔内并具有控制端，阀芯的外侧壁形成有密封段和过水槽，所述第二弹性件作用于阀芯用于使阀芯在控制端无外力时自动复位，通过控制端控制阀芯相对阀座移动，使阀前进水段与阀后出水段之间通过过水槽相连通或通过密封段密封，从而控制阀前进水段与阀后出水段之间水路的通断。The water inlet valve includes a valve core arranged radially along the water inlet channel, a valve seat and a second elastic member, the valve seat has a cavity communicating with the water inlet section of the valve and the water outlet section after the valve, the valve core The guiding movement is set in the cavity and has a control end. The outer wall of the valve core is formed with a sealing section and a water tank. The second elastic member acts on the valve core to make the valve core reset automatically when there is no external force at the control end. , through the control end to control the movement of the valve core relative to the valve seat, so that the water section before the valve and the water outlet section after the valve are connected through the water tank or sealed by the sealing section, so as to control the water flow between the water section before the valve and the water outlet section after the valve on and off.
进一步地，所述过水槽沿阀芯延伸方向为上下对称结构，以使水压对过水槽上、下侧作用力大小相等、方向相反。Further, the water-passing groove has an up-and-down symmetrical structure along the extending direction of the valve core, so that the force of the water pressure on the upper and lower sides of the water-passing groove is equal in magnitude and opposite in direction.
进一步地，所述传动机构包括偏心轴，偏心轴输出端与柱塞通过柱塞轴承转动连接，所述泵体形成有用于容纳所述柱塞轴承的轴承腔，所述泵体上开设有连通轴承腔内部与泵体外部的排水孔。Further, the transmission mechanism includes an eccentric shaft, the output end of the eccentric shaft is rotationally connected to the plunger through a plunger bearing, the pump body is formed with a bearing chamber for accommodating the plunger bearing, and a communication channel is opened on the pump body. Drain holes inside the bearing chamber and outside the pump body.
进一步地，所述泵体包括泵壳体，所述传动机构包括传动支撑机构，所述泵壳体及所述传动支撑机构均配置为塑料材质。Further, the pump body includes a pump casing, the transmission mechanism includes a transmission support mechanism, and both the pump casing and the transmission support mechanism are made of plastic material.
进一步地，所述传动机构配置为行星齿轮传动结构，包括行星支架、行星齿轮组、偏心轴、轴承及轴承定位支架，所述偏心轴输入端、输出端分别对应设置有轴承，所述轴承安装于轴承定位支架上，所述行星齿轮组通过销轴转动安装于行星支架上，所述行星支架、销轴、偏心轴、轴承及轴承定位支架之间通过过盈配合连接。Further, the transmission mechanism is configured as a planetary gear transmission structure, including a planet carrier, a planetary gear set, an eccentric shaft, a bearing and a bearing positioning bracket, and the input and output ends of the eccentric shaft are respectively provided with bearings, and the bearings are installed On the bearing positioning bracket, the planetary gear set is rotatably mounted on the planetary bracket through the pin shaft, and the planetary bracket, the pin shaft, the eccentric shaft, the bearing and the bearing positioning bracket are connected by interference fit.
一种手持式高压清洗机，包括手持喷枪壳体及设置于手持喷枪壳体内的泵体、传动机构及电机；A hand-held high-pressure cleaning machine, comprising a hand-held spray gun housing, a pump body, a transmission mechanism and a motor arranged in the hand-held spray gun housing;
所述手持喷枪壳体形成有水流喷口；The housing of the hand-held spray gun is formed with a water flow nozzle;
所述泵体包括高压腔室、柱塞、进水通道及出水通道，所述柱塞能够相对高压腔室做往复运动以对水流进行加压，所述进水通道和出水通道分别与高压腔室相连通，所述出水通道与所述水流喷口相连通；The pump body includes a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel. The plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow. The water inlet channel and the water outlet channel are respectively connected to the high-pressure chamber. The chambers are connected, and the water outlet channel is connected with the water flow nozzle;
所述传动机构包括减速器，所述电机通过所述减速器连接并驱动所述柱塞相对高压腔室作往复运动；The transmission mechanism includes a reducer, the motor is connected through the reducer and drives the plunger to reciprocate relative to the high-pressure chamber;
所述电机配置为外转子无刷电机，所述电机在其动力输出轴轴向上的尺寸为42-55mm，在电机动力输出轴轴向上由电机后缘至柱塞前缘的尺寸为95～110mm。The motor is configured as an outer rotor brushless motor, the size of the motor in the axial direction of its power output shaft is 42-55mm, and the size from the rear edge of the motor to the front edge of the plunger in the axial direction of the motor power output shaft is 95mm ~110mm.
一种柱塞泵，包括：A plunger pump comprising:
泵体，包括高压腔室、柱塞、进水通道及出水通道，所述柱塞能够相对高压腔室做往复运动以对水流进行加压，所述进水通道和出水通道分别与高压腔室相连通；The pump body includes a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel. The plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow. The water inlet channel and the water outlet channel are respectively connected to the high-pressure chamber. Connected;
驱动件，通过动力输出轴输出旋转驱动力；The driving part outputs the rotational driving force through the power output shaft;
及传动机构，连接于所述驱动件与柱塞之间，用于将驱动件的旋转运动转换成柱塞的往复运动；and a transmission mechanism, connected between the driving member and the plunger, for converting the rotational motion of the driving member into the reciprocating motion of the plunger;
其中：所述泵体输出的额定压力为3-7MPa，泵体被经过所述柱塞并且与所述驱动件的动力输出轴轴向相垂直的平面所截的横截面中至少部分横截面的面积为33.6-59.6cm 2。 Wherein: the rated pressure output by the pump body is 3-7MPa, at least part of the cross-section of the pump body is cut by a plane passing through the plunger and perpendicular to the axial direction of the power output shaft of the drive member The area is 33.6-59.6 cm 2 .
进一步地，所述偏心轴输入端与所述驱动件的动力输出轴平行设置并位于不同轴线上，所述偏心轴输入端与所述驱动件的动力输出轴在轴向上具有相互干涉区段，用以通过在径向平面排布的传动组件将偏心轴输入端与驱动件动力输出轴传动连接。Further, the input end of the eccentric shaft and the power output shaft of the driving member are arranged in parallel and on different axes, and the input end of the eccentric shaft and the power output shaft of the driving member have mutual interference sections in the axial direction , which is used to connect the input end of the eccentric shaft with the power output shaft of the driving member through the transmission assembly arranged in the radial plane.
本发明具有如下有益效果：The present invention has following beneficial effect:
第一，本发明通过合理设置泵体宽度、高度、横截面积，柱塞直径，偏心轴距，电机长度，传动机构尺寸等参数；同时，通过选用体积小、重量轻的外转子无刷电机，将偏心轴输出端收容在柱塞凹槽内且凹槽深度不小于柱塞直径的1/2，将偏心轴输入端与电机的动力输出轴设置于不同轴线上并通过在径向平面排布的传动组件传动连接等技术手段；在满足整机性能的前提下，可使柱塞泵及整机体积最小化、重量最轻化；另外，通过增大进水单向阀与高压腔室进水口之间的流道横截面积，将泄压通道与进水通道分别独立设置且并排分布，可有效提高泵体流量；从而可实现在柱塞泵的压力提升至3Mpa以上且流量提升至180-300L/h时，有效降低柱塞泵体积，实现柱塞泵及手持式清洗机大压力、大流量、效率高且体积小、重量轻、轻巧、便携的特点，提高手持式清洗机的操作舒适度。First, the present invention rationally sets the pump body width, height, cross-sectional area, plunger diameter, eccentric wheelbase, motor length, transmission mechanism size and other parameters; , the output end of the eccentric shaft is housed in the groove of the plunger and the depth of the groove is not less than 1/2 of the diameter of the plunger, the input end of the eccentric shaft and the power output shaft of the motor are arranged on different axes Clothed transmission components transmission connection and other technical means; under the premise of satisfying the performance of the whole machine, the volume and weight of the plunger pump and the whole machine can be minimized; in addition, by increasing the water inlet check valve and the high-pressure chamber The cross-sectional area of the flow channel between the water inlets, the pressure relief channel and the water inlet channel are independently arranged and distributed side by side, which can effectively increase the flow rate of the pump body; thus, the pressure of the plunger pump can be increased to above 3Mpa and the flow rate can be increased to 180-300L/h, effectively reducing the volume of the plunger pump, realizing the characteristics of high pressure, large flow, high efficiency, small size, light weight, light weight and portability of the plunger pump and hand-held washing machine, and improving the performance of the hand-held washing machine Operating comfort.
第二，本发明柱塞轴承选用滚针轴承，直径小，重量轻，在满足性能强度的前提下，使机器最小化、重量最轻化；另外，通过使滚针轴承与凹槽之间配合面设置为两端间隙大于中部，可避免轴承端部受力；同时，通过在泵体轴承腔处开设排水孔，可将泵体腔内的集水排出，避免柱塞轴承损坏失效，提高产品寿命及可靠性。Second, the plunger bearing of the present invention uses needle bearings, which are small in diameter and light in weight. Under the premise of satisfying the performance strength, the machine is minimized and the weight is minimized; in addition, through the cooperation between the needle bearing and the groove The surface is set so that the gap at both ends is greater than that in the middle, which can avoid the force on the end of the bearing; at the same time, by setting a drainage hole at the bearing cavity of the pump body, the water collected in the pump body cavity can be discharged, avoiding damage and failure of the plunger bearing, and improving product life. and reliability.
第三，本发明进水阀垂直于进水方向设置，通过阀芯与阀座间径向密封来控制水流的通断，可减小水压对阀芯轴向上的作用力；同时，通过将过水槽设置为沿阀芯延伸方向的上下对称结构，水压对过水槽上、下侧作用力大小相等、方向相反，相互抵消，从而拉动阀芯时水压对阀芯轴向无阻力，按压扳机拉动阀芯时仅需克服弹簧力及摩擦力，所需操作力较小，操作更省力，可提高产品使用舒适度。Third, the water inlet valve of the present invention is arranged perpendicular to the water inlet direction, and the on-off of the water flow is controlled through the radial seal between the valve core and the valve seat, which can reduce the axial force of the water pressure on the valve core; at the same time, through Set the water tank as an up-and-down symmetrical structure along the extension direction of the valve core. The force of the water pressure on the upper and lower sides of the water tank is equal in size and opposite in direction, and cancels each other out. Therefore, when the valve core is pulled, the water pressure has no resistance to the axial direction of the valve core. When pressing the trigger to pull the spool, it only needs to overcome the spring force and frictional force, the required operating force is less, and the operation is more labor-saving, which can improve the comfort of the product.
第四，本发明泵体的泵壳体及传动机构的传动支撑机构均采用塑料材质，在满足产品性能、寿命的前提下，使机器最小、重量最轻、成本最低。Fourth, the pump casing of the pump body of the present invention and the transmission support mechanism of the transmission mechanism are all made of plastic materials, so that the machine is the smallest, the weight is the lightest, and the cost is the lowest under the premise of satisfying product performance and life.
第五，本发明的行星支架、销轴、偏心轴、轴承及轴承定位支架之间通过过盈配合连接，结构简单，零件可分别独立加工，显著的简化了传动轴、行星支架等零件的加工工艺，可有效降低总体成本。Fifth, the planetary support, pin shaft, eccentric shaft, bearing and bearing positioning support of the present invention are connected by interference fit, the structure is simple, and the parts can be processed independently, which significantly simplifies the processing of transmission shafts, planetary support and other parts technology, which can effectively reduce the overall cost.
第六，本发明可减小泵体在柱塞延伸方向上的尺寸，进而可将柱塞横向布置，使整机左右对称，外观更协调、美观。Sixth, the present invention can reduce the size of the pump body in the direction of the extension of the plunger, and furthermore, the plunger can be arranged horizontally, so that the whole machine is left and right symmetrical, and the appearance is more coordinated and beautiful.
附图说明Description of drawings
图1为现有技术中压力2.2MPa且流量120L/h的单柱塞泵的剖视图；Fig. 1 is the sectional view of the single plunger pump of pressure 2.2MPa and flow rate 120L/h in the prior art;
图2为图1中压力2.2MPa且流量120L/h的单柱塞泵的俯视图；Fig. 2 is a top view of a single plunger pump with a pressure of 2.2MPa and a flow rate of 120L/h in Fig. 1;
图3为现有技术中压力2.4MPa且流量210L/h的单柱塞泵的剖视图；Fig. 3 is a sectional view of a single plunger pump with a pressure of 2.4MPa and a flow rate of 210L/h in the prior art;
图4为图3中压力2.4MPa且流量210L/h的单柱塞泵的俯视图；Fig. 4 is a top view of a single plunger pump with a pressure of 2.4MPa and a flow rate of 210L/h in Fig. 3;
图5为现有技术中压力5MPa且流量250L/h的单柱塞泵的剖视图；Fig. 5 is a sectional view of a single plunger pump with a pressure of 5 MPa and a flow rate of 250 L/h in the prior art;
图6为图5中压力5MPa且流量250L/h的单柱塞泵的俯视图；Fig. 6 is a top view of a single plunger pump with a pressure of 5 MPa and a flow rate of 250 L/h in Fig. 5;
图7为现有技术中压力3MPa且流量250L/h的三柱塞轴向泵的剖视图；Fig. 7 is a cross-sectional view of a three-piston axial pump with a pressure of 3 MPa and a flow rate of 250 L/h in the prior art;
图8为图7中压力3MPa且流量250L/h的三柱塞轴向泵的俯视图；Fig. 8 is a top view of a three-piston axial pump with a pressure of 3 MPa and a flow rate of 250 L/h in Fig. 7;
图9为本发明第一实施例的手持式高压清洗机的整体结构右视图；Fig. 9 is a right view of the overall structure of the hand-held high-pressure cleaner according to the first embodiment of the present invention;
图10为本发明第一实施例的整机主体的剖视图；Fig. 10 is a sectional view of the main body of the complete machine according to the first embodiment of the present invention;
图11为本发明第一实施例的柱塞泵的俯视结构剖视图；Fig. 11 is a cross-sectional view of the top structure of the plunger pump according to the first embodiment of the present invention;
图12为本发明第一实施例的柱塞泵的仰视图；Fig. 12 is a bottom view of the plunger pump according to the first embodiment of the present invention;
图13为本发明第一实施例的柱塞泵的部分结构后视图，图中示出了齿轮箱的后视结构；Fig. 13 is a rear view of part of the structure of the plunger pump according to the first embodiment of the present invention, in which the rear view structure of the gear box is shown;
图14为本发明第一实施例的柱塞泵的整体结构立体图；14 is a perspective view of the overall structure of the plunger pump according to the first embodiment of the present invention;
图15为本发明第一实施例的柱塞泵的分解结构立体图；Fig. 15 is a perspective view of the exploded structure of the plunger pump according to the first embodiment of the present invention;
图16为本发明第一实施例的柱塞泵的前视结构剖视图；Fig. 16 is a front structural sectional view of the plunger pump according to the first embodiment of the present invention;
图17为本发明第一实施例的进水阀在进水通道上的安装结构剖视图，图中示出进水通道水路断开时的工作状态；Fig. 17 is a cross-sectional view of the installation structure of the water inlet valve on the water inlet channel according to the first embodiment of the present invention, showing the working state when the water channel of the water inlet channel is disconnected;
图18为本发明第一实施例的进水阀在进水通道上的安装结构剖视图，图中示出进水通道水路连通时的工作状态；Fig. 18 is a cross-sectional view of the installation structure of the water inlet valve on the water inlet channel according to the first embodiment of the present invention, which shows the working state of the water inlet channel when the waterway is connected;
图19为本发明第一实施例的传动机构与电机及柱塞连接的安装结构剖视图；Fig. 19 is a cross-sectional view of the installation structure connecting the transmission mechanism with the motor and the plunger according to the first embodiment of the present invention;
图20为本发明第一实施例的传动机构的分解结构立体图；Fig. 20 is an exploded perspective view of the transmission mechanism of the first embodiment of the present invention;
图21为本发明第一实施例的柱塞泵的部分结构剖视图，图中示出了柱塞与偏心轴的连接结构；Fig. 21 is a partial structural sectional view of the plunger pump according to the first embodiment of the present invention, showing the connection structure between the plunger and the eccentric shaft;
图22为本发明第一实施例的滚针轴承的剖视图；Fig. 22 is a cross-sectional view of the needle bearing of the first embodiment of the present invention;
图23为本发明第一实施例的柱塞泵的左视结构剖视图，图中示出了排水孔结构；Fig. 23 is a left structural cross-sectional view of the plunger pump according to the first embodiment of the present invention, showing the drain hole structure;
图24为本发明第二实施例的手持式清洗机的整体结构左视图；Fig. 24 is a left view of the overall structure of the hand-held washing machine according to the second embodiment of the present invention;
图25为本发明第二实施例的柱塞泵的俯视图；Fig. 25 is a top view of a plunger pump according to a second embodiment of the present invention;
图26为本发明第二实施例的柱塞泵的左视结构剖视图；Fig. 26 is a left structural sectional view of the plunger pump according to the second embodiment of the present invention;
图27为本发明第二实施例的柱塞泵的立体结构剖视图；Fig. 27 is a sectional view of the three-dimensional structure of the plunger pump according to the second embodiment of the present invention;
图28为本发明第三实施例的柱塞泵的局部结构剖视图，图中示出了柱塞的凹槽与滚针轴承的配合结构；Fig. 28 is a sectional view of the partial structure of the plunger pump according to the third embodiment of the present invention, showing the matching structure between the groove of the plunger and the needle bearing;
图29为本发明第四实施例的柱塞泵的局部结构剖视图，图中示出了柱塞的凹槽与滚针轴承的配合结构。Fig. 29 is a cross-sectional view of the partial structure of the plunger pump according to the fourth embodiment of the present invention, which shows the matching structure between the groove of the plunger and the needle bearing.
图中：1.出水枪管，2.外壳，21.枪管接口，22.手柄，23.电源部，24.扳机，3.柱塞泵，31.泵体，311.泵身，312.泵头，313.左泵盖，314.右泵盖，315.高压腔室，3151.第一高压腔室，3152.第二高压腔室，316.柱塞，3161.凹槽，3162.第一斜面，3163.第二斜面，3164.第三斜面，3165.环形槽，317.进水通道，3171.进水口，3172.进水单向阀，3173.阀前进水段，3174.阀后出水段，318.出水通道，3181.出水口，3182.出水单向阀，319.柱塞腔，3110.进水管件，32.电机，321.太阳轮，33.传动机构，331.行星支架，332.偏心轴，3321.偏心轴输入端，3322.偏心轴输出端，3323.中间连接部，333.轴承定位支架，334.第一轴承，335.第二轴承，336.柱塞轴承，3361.弧形曲面，337.行星齿轮，338.销轴，339.滑磨片，3301.第一齿轮，3302.第二齿轮，341.泄压通道，342.泄压装置，3421.泄压阀片，3422.第一弹性件，35.进水阀，351.阀芯，3511.控制端，3512.密封段，3513.过水槽，352.阀座，353.第二弹性件，354.导套，355.插销，361.第一密封件，362.第二密封件，371.第一导向套，372.第二导向套，381.轴承腔，382.排水孔。In the figure: 1. Outlet gun barrel, 2. Shell, 21. Gun barrel interface, 22. Handle, 23. Power supply unit, 24. Trigger, 3. Plunger pump, 31. Pump body, 311. Pump body, 312. Pump head, 313. left pump cover, 314. right pump cover, 315. high pressure chamber, 3151. first high pressure chamber, 3152. second high pressure chamber, 316. plunger, 3161. groove, 3162. first One slope, 3163. Second slope, 3164. Third slope, 3165. Annular groove, 317. Water inlet channel, 3171. Water inlet, 3172. Water inlet one-way valve, 3173. Valve inlet water section, 3174. After valve Water outlet section, 318. Water outlet channel, 3181. Water outlet, 3182. Water outlet one-way valve, 319. Plunger cavity, 3110. Water inlet pipe fitting, 32. Motor, 321. Sun gear, 33. Transmission mechanism, 331. Planetary support , 332. Eccentric shaft, 3321. Eccentric shaft input end, 3322. Eccentric shaft output end, 3323. Intermediate connection part, 333. Bearing positioning bracket, 334. First bearing, 335. Second bearing, 336. Plunger bearing, 3361. Arc surface, 337. Planetary gear, 338. Pin shaft, 339. Sliding grinding plate, 3301. First gear, 3302. Second gear, 341. Pressure relief channel, 342. Pressure relief device, 3421. Pressure relief Valve plate, 3422. First elastic part, 35. Inlet valve, 351. Valve core, 3511. Control end, 3512. Sealing section, 3513. Water tank, 352. Valve seat, 353. Second elastic part, 354. Guide sleeve, 355. latch, 361. first seal, 362. second seal, 371. first guide sleeve, 372. second guide sleeve, 381. bearing cavity, 382. drainage hole.
具体实施方式Detailed ways
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的机构或元 件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred mechanism or element must have a specific orientation, and must have a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.
此外，下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.
参照图9和图10，本发明第一实施例的手持式高压清洗机，包括整机主体及出水枪管1。整机主体包括外壳2及柱塞泵3，柱塞泵3包括泵体31、电机32及传动机构33，所述电机32、传动机构33及泵体31安装于外壳2内，电机32通过传动机构33与泵体31连接，用于驱动泵体31运转。Referring to FIG. 9 and FIG. 10 , the hand-held high-pressure cleaner according to the first embodiment of the present invention includes a main body of the whole machine and a water outlet gun barrel 1 . The main body of the whole machine includes a casing 2 and a plunger pump 3. The plunger pump 3 includes a pump body 31, a motor 32 and a transmission mechanism 33. The motor 32, the transmission mechanism 33 and the pump body 31 are installed in the casing 2. The mechanism 33 is connected with the pump body 31 for driving the pump body 31 to run.
参照图10和图11，所述泵体31为柱塞泵泵体，包括高压腔室315、柱塞316、进水通道317及出水通道318。所述高压腔室315包括分别与柱塞316的两端相对应配合设置的第一高压腔室3151和第二高压腔室3152。所述柱塞316能够相对第一高压腔室3151、第二高压腔室3152做往复运动以对水流进行加压。进水通道317和出水通道318分别与第一高压腔室3151、第二高压腔室3152相连通。所述进水通道317外端形成进水口3171，出水通道318外端形成出水口3181，进水口3171用于连接外部水源，出水口3181用于连接出水枪管1。所述外壳2在泵体31的出水口3181前端形成有用于连接出水枪管1的枪管接口21，出水枪管1连接于枪管接口21处。所述外壳2和所述出水枪管1组成手持式高压清洗机的手持喷枪壳体。所述出水枪管1外端形成水流喷口。所述出水通道318与所述水流喷口相连通。10 and 11 , the pump body 31 is a plunger pump body, including a high pressure chamber 315 , a plunger 316 , a water inlet channel 317 and a water outlet channel 318 . The high-pressure chamber 315 includes a first high-pressure chamber 3151 and a second high-pressure chamber 3152 respectively matched with two ends of the plunger 316 . The plunger 316 can reciprocate relative to the first high-pressure chamber 3151 and the second high-pressure chamber 3152 to pressurize the water flow. The water inlet channel 317 and the water outlet channel 318 communicate with the first high pressure chamber 3151 and the second high pressure chamber 3152 respectively. The outer end of the water inlet channel 317 forms a water inlet 3171 , the outer end of the water outlet channel 318 forms a water outlet 3181 , the water inlet 3171 is used to connect to an external water source, and the water outlet 3181 is used to connect to the water outlet barrel 1 . The housing 2 is formed with a gun barrel interface 21 for connecting the water outlet gun barrel 1 at the front end of the water outlet 3181 of the pump body 31 , and the water outlet gun barrel 1 is connected to the gun barrel interface 21 . The shell 2 and the water outlet gun tube 1 form a hand-held spray gun housing of a hand-held high-pressure cleaner. The outer end of the water outlet gun tube 1 forms a water flow nozzle. The water outlet channel 318 is in communication with the water flow nozzle.
本实施例中，所述泵体31输出的额定压力为3-7Mpa，泵体的流量为180-300L/h。所述电机32在其动力输出轴轴向上的尺寸、所述泵体31在其柱塞316延伸方向上的尺寸及传动机构的宽度和高度中尺寸较小者的乘积为190-230cm 3。其中：电机32在其动力输出轴轴向上的尺寸是影响电机整体尺寸的主要维度；泵体31在其柱塞316延伸方向上的尺寸是影响泵体整体尺寸的主要维度；传动机构33为齿轮箱，齿轮箱内包括有减速器，齿轮箱宽度和高度中尺寸较小者对应齿轮箱圆盘结构的直径尺寸，由于周围安装结构设计灵活，因此该尺寸是决定齿轮箱整体尺寸的主要维度；上述三个尺寸分别决定了电机32、泵体31及齿轮箱的整体尺寸，并共同影响柱塞泵3的整体尺寸，因此，上述三个尺寸的乘积小，也使得柱塞泵3的体积小。泵体31被经过所述柱塞316并且与所述电机的动力输出轴轴向相垂直的平面(即图9至图12中方向b和方向c构成的平面)所截的横截面中至少70％的横截面的面积为33.6-59.6cm 2。参照图11至图13，所述电机32为外转子无刷电机，电机32的转速为10000r/min-30000r/min，电机32在其动力输出轴轴向上(即如图11和图12中a向所示的方向上)的长度L3为42-55mm；所述泵体31的柱塞316沿水平方向布置，并与所述电机32的动力输出轴轴向相垂直，泵体31在其柱塞316延伸方向上(即如图11和图12中b向所示的方向上)的尺寸对应泵体31的宽度，泵体31的宽度大于泵体31的高度，泵体宽度W为75-109.5mm，泵体高度H为40.5-68.5mm，所述泵体高度为泵体在图9和图13中c向所示的方向上的尺寸；所述齿轮箱的高度小于宽度，齿轮箱高度E为50-55mm，齿轮箱高度为齿轮箱在图9和图13中c向所示的方向上的尺寸。 In this embodiment, the rated pressure output by the pump body 31 is 3-7Mpa, and the flow rate of the pump body is 180-300L/h. The product of the size of the motor 32 in the axial direction of the power output shaft, the size of the pump body 31 in the direction of the extension of the plunger 316 and the width and height of the transmission mechanism, whichever is smaller, is 190-230 cm 3 . Wherein: the size of the motor 32 in the axial direction of its power output shaft is the main dimension that affects the overall size of the motor; the size of the pump body 31 in the extending direction of its plunger 316 is the main dimension that affects the overall size of the pump body; the transmission mechanism 33 is Gearbox, the gearbox includes a reducer, the smaller of the width and height of the gearbox corresponds to the diameter of the gearbox disc structure, due to the flexible design of the surrounding installation structure, this size is the main dimension that determines the overall size of the gearbox The above-mentioned three dimensions determine the overall size of the motor 32, the pump body 31 and the gear box respectively, and jointly affect the overall size of the plunger pump 3. Therefore, the product of the above-mentioned three dimensions is small, which also makes the volume of the plunger pump 3 Small. The pump body 31 is at least 70 in the cross-section of the plane passing through the plunger 316 and perpendicular to the axial direction of the power output shaft of the motor (that is, the plane formed by the direction b and the direction c in FIGS. The % cross-sectional area is 33.6-59.6 cm 2 . Referring to Fig. 11 to Fig. 13, the motor 32 is an outer rotor brushless motor, the rotating speed of the motor 32 is 10000r/min-30000r/min, and the motor 32 is in the axial direction of its power output shaft (that is, as shown in Fig. 11 and Fig. 12 a to the direction shown) the length L3 is 42-55mm; the plunger 316 of the pump body 31 is arranged in the horizontal direction, and is perpendicular to the axial direction of the power output shaft of the motor 32, and the pump body 31 is in its The size of the plunger 316 in the direction of extension (that is, the direction shown by b in Figure 11 and Figure 12) corresponds to the width of the pump body 31, the width of the pump body 31 is greater than the height of the pump body 31, and the width W of the pump body is 75 -109.5mm, the height H of the pump body is 40.5-68.5mm, and the height of the pump body is the size of the pump body in the direction indicated by c in Figure 9 and Figure 13; the height of the gear box is less than the width, and the gear box The height E is 50-55mm, and the height of the gearbox is the size of the gearbox in the direction indicated by c in Fig. 9 and Fig. 13 .
参照图9和图11，所述整机主体配置为：在所述电机32的动力输出轴轴向上(即如图9和图11中a向所示的方向上)，由电机32后缘至柱塞316前缘的长度L1与由外壳2后缘至枪管接口21前缘的长度L2的比值为0.2-0.35；其中：由电机32后缘至柱 塞316前缘的长度L1为95-110mm，由外壳2后缘至枪管接口21前缘的长度L2为320-340mm。Referring to Fig. 9 and Fig. 11, the main body of the whole machine is configured as follows: in the axial direction of the power output shaft of the motor 32 (that is, in the direction shown by a in Fig. 9 and Fig. 11), the rear edge of the motor 32 The ratio of the length L1 to the front edge of the plunger 316 and the length L2 from the rear edge of the casing 2 to the front edge of the barrel interface 21 is 0.2-0.35; wherein: the length L1 from the rear edge of the motor 32 to the front edge of the plunger 316 is 95 -110mm, the length L2 from the rear edge of the casing 2 to the front edge of the barrel interface 21 is 320-340mm.
优选地，本实施例中，泵体31输出的额定压力为3-6MPa，流量180-220L/h，电机32长度L3为42-50mm,泵体31宽度W为75-80mm，齿轮箱高度E为50-55mm。在所述电机32的动力输出轴轴向上，由电机32后缘至柱塞316前缘的长度L1为95-105mm，由外壳2后缘至枪管接口21前缘的长度L2为325-335mm，整体主体连接出水枪管1后的长度L4为800-900mm。Preferably, in this embodiment, the rated pressure output by the pump body 31 is 3-6MPa, the flow rate is 180-220L/h, the length L3 of the motor 32 is 42-50mm, the width W of the pump body 31 is 75-80mm, and the height of the gear box is E 50-55mm. In the axial direction of the power output shaft of the motor 32, the length L1 from the rear edge of the motor 32 to the front edge of the plunger 316 is 95-105mm, and the length L2 from the rear edge of the casing 2 to the front edge of the barrel interface 21 is 325- 335mm, and the length L4 after the overall main body is connected to the water gun tube 1 is 800-900mm.
参照图11，所述传动机构33包括偏心轴332，柱塞316中部开设有用于连接偏心轴332的凹槽3161，凹槽3161深度不小于1/2柱塞直径。所述偏心轴输入端3321与电机32动力输出轴传动连接，偏心轴输出端3322至少部分收容在所述凹槽3161内并与柱塞316通过柱塞轴承336转动连接。所述传动机构33将电机32的旋转运动转化为柱塞316的直线往复运动。Referring to Fig. 11, the transmission mechanism 33 includes an eccentric shaft 332, and a groove 3161 for connecting the eccentric shaft 332 is provided in the middle of the plunger 316, and the depth of the groove 3161 is not less than 1/2 of the diameter of the plunger. The input end 3321 of the eccentric shaft is in drive connection with the power output shaft of the motor 32 , and the output end 3322 of the eccentric shaft is at least partially accommodated in the groove 3161 and is rotationally connected with the plunger 316 through the plunger bearing 336 . The transmission mechanism 33 converts the rotational motion of the motor 32 into the linear reciprocating motion of the plunger 316 .
本实施例中，所述柱塞316的直径为10-16mm，偏心轴332的偏心距为3-6mm。In this embodiment, the diameter of the plunger 316 is 10-16mm, and the eccentricity of the eccentric shaft 332 is 3-6mm.
具体地，本实施例中，所述柱塞316直径为10-14mm，偏心轴332的偏心距为3-4.5mm，柱塞316的行程为7-8mm；电机32的转速为15000-20000r/min，传动比为7-8，容积效率为80-90％。Specifically, in this embodiment, the diameter of the plunger 316 is 10-14mm, the eccentricity of the eccentric shaft 332 is 3-4.5mm, the stroke of the plunger 316 is 7-8mm; the speed of the motor 32 is 15000-20000r/ min, the transmission ratio is 7-8, and the volumetric efficiency is 80-90%.
参照图11、图14和图15，所述泵体31还包括泵身311、泵头312、左泵盖313、右泵盖314及进水管件3110，所述泵身311分别与泵头312、左泵盖313、右泵盖314连接，所述泵身311与左泵盖313、右泵盖314及柱塞316之间形成所述第一高压腔室3151、第二高压腔室3152，泵身311与泵头312之间形成所述出水通道318，泵神311与进水管件3110之间形成所述进水通道317，泵身311内还形成有用于容纳柱塞316的柱塞腔319。Referring to Fig. 11, Fig. 14 and Fig. 15, the pump body 31 also includes a pump body 311, a pump head 312, a left pump cover 313, a right pump cover 314 and an inlet pipe fitting 3110, and the pump body 311 is connected with the pump head 312 respectively. , the left pump cover 313 and the right pump cover 314 are connected, and the first high-pressure chamber 3151 and the second high-pressure chamber 3152 are formed between the pump body 311, the left pump cover 313, the right pump cover 314 and the plunger 316, The water outlet channel 318 is formed between the pump body 311 and the pump head 312, the water inlet channel 317 is formed between the pump body 311 and the water inlet pipe 3110, and a plunger cavity for accommodating the plunger 316 is also formed in the pump body 311 319.
所述第一高压腔室3151、第二高压腔室3152均具有高压腔室进水口和高压腔室出水口，进水通道317通过进水单向阀3172分别与第一高压腔室3151、第二高压腔室3152的高压腔室进水口相连通，出水通道318通过出水单向阀3182分别与第一高压腔室3151、第二高压腔室3152的高压腔室出水口相连通。进水单向阀3172能够随着高压腔室315内水压的降低而开启、升高而闭合。出水单向阀3182能够随着高压腔室315内水压的降低而闭合、升高而开启。现有清洗机中，进水单向阀与高压腔室进水口之间的流道横截面积为19mm 2左右，面积较小，限制了经过进水单向阀进入到高压腔室的液态水的速度。本实施例中，优选地，进水单向阀3172与所述高压腔室进水口之间的流道横截面积不小于35mm 2，可提高进水流量。进水单向阀3172和出水单向阀3182的具体结构和安装方式为现有技术，在此不再赘述。进水单向阀3172和出水单向阀3182可由一段弹簧和一个阀体连接而成，阀体连接于弹簧的端部，但不限于此。 Both the first high-pressure chamber 3151 and the second high-pressure chamber 3152 have a water inlet of the high-pressure chamber and a water outlet of the high-pressure chamber. The high-pressure chamber water inlets of the two high-pressure chambers 3152 are connected, and the water outlet channel 318 is respectively connected with the high-pressure chamber water outlets of the first high-pressure chamber 3151 and the second high-pressure chamber 3152 through the water outlet check valve 3182 . The water inlet check valve 3172 can be opened, raised and closed as the water pressure in the high pressure chamber 315 decreases. The water outlet check valve 3182 can be closed and opened as the water pressure in the high pressure chamber 315 decreases and rises. In the existing cleaning machine, the cross-sectional area of the flow path between the water inlet check valve and the water inlet of the high-pressure chamber is about 19 mm 2 , which is relatively small, which limits the liquid water entering the high-pressure chamber through the water inlet check valve. speed. In this embodiment, preferably, the cross-sectional area of the flow channel between the water inlet check valve 3172 and the water inlet of the high-pressure chamber is not less than 35 mm 2 , which can increase the water inlet flow. The specific structure and installation method of the water inlet check valve 3172 and the water outlet check valve 3182 are prior art, and will not be repeated here. The water inlet check valve 3172 and the water outlet check valve 3182 can be formed by connecting a section of spring and a valve body, and the valve body is connected to the end of the spring, but it is not limited thereto.
参照图11，柱塞316在第一位置和第二位置之间往复运动，第一位置为柱塞316朝向第一高压腔室3151方向运动的极限位置，第二位置为柱塞316朝向第二高压腔室3152方向运动的极限位置。柱塞316从第一位置向第二位置移动时，第一高压腔室3151的体积逐渐增大，水压下降，此时，第一高压腔室3151对应的进水单向阀3172打开，出水单向阀3182关闭，液态水从进水通道317流入第一高压腔室3151；同时，第二高压腔室3152的体积逐渐减小，将第二高压腔室3152内的液态水加压，此时，第二高压腔室3152对应的进水单向阀3172关闭，出水单向阀3182打开，液态水从第二高压腔室3152流出至出水通道318。反之，柱塞316从第二位置向第一位置移动时，液态水从第一高压 腔室3151流出至出水通道318，从进水通道317流入第二高压腔室3152；如此往复。柱塞316交替压缩或释放第一高压腔室3151、第二高压腔室3152，水依次经过进水通道317、第一高压腔室3151或第二高压腔室3152、出水通道318，最终形成高压水流，由手持式清洗机的出水枪管1喷出，用于清洗作业。Referring to Fig. 11, the plunger 316 reciprocates between a first position and a second position, the first position is the extreme position where the plunger 316 moves toward the first high pressure chamber 3151, and the second position is the plunger 316 moves toward the second The limit position of high pressure chamber 3152 direction movement. When the plunger 316 moves from the first position to the second position, the volume of the first high-pressure chamber 3151 gradually increases, and the water pressure drops. At this time, the water inlet check valve 3172 corresponding to the first high-pressure chamber 3151 opens, and the water outlet The one-way valve 3182 is closed, and the liquid water flows into the first high-pressure chamber 3151 from the water inlet channel 317; at the same time, the volume of the second high-pressure chamber 3152 gradually decreases, and the liquid water in the second high-pressure chamber 3152 is pressurized. At this time, the water inlet check valve 3172 corresponding to the second high pressure chamber 3152 is closed, the water outlet check valve 3182 is opened, and the liquid water flows out from the second high pressure chamber 3152 to the water outlet channel 318 . Conversely, when the plunger 316 moves from the second position to the first position, liquid water flows out from the first high-pressure chamber 3151 to the water outlet channel 318, flows into the second high-pressure chamber 3152 from the water inlet channel 317; and so on. The plunger 316 alternately compresses or releases the first high-pressure chamber 3151 and the second high-pressure chamber 3152, and the water sequentially passes through the water inlet channel 317, the first high-pressure chamber 3151 or the second high-pressure chamber 3152, and the water outlet channel 318, finally forming a high pressure The water flow is sprayed out by the water outlet gun tube 1 of the hand-held washing machine for cleaning operations.
现有的清洗机中，设置有连通进水通道与出水通道的泄压装置，用于在出水通道内压力过大时进行泄压，提高柱塞泵的安全性能，泄压装置至少部分位于进水通道内，形成进水阻力，因此满足不了柱塞泵的大流量需求。为了得到小体积、大流量的柱塞泵，本实施例中，参照图16，进水通道317与出水通道318之间设置有用于连通进水通道317和出水通道318的泄压通道341，泄压通道341与进水通道317分别独立设置且并排平行分布，在泄压通道341内设置泄压装置342。可避免占据进水通道的空间，扩大进水通道317的流量，且泄压装置341与进水通道317平行设置，在不影响柱塞泵3性能的前提下，可降低体积。泄压装置342包括泄压阀片3421及连接并作用于泄压阀片3421的第一弹性件3422，出水通道318压力作用于泄压装置342，使所述泄压阀片3421在封闭和打开所述泄压通道341状态间切换。第一弹性件3422采用弹簧。但泄压装置342及第一弹性件3422结构均不限于此。In the existing cleaning machine, a pressure relief device connected to the water inlet channel and the water outlet channel is provided, which is used to release the pressure when the pressure in the water outlet channel is too high, so as to improve the safety performance of the plunger pump. The pressure relief device is at least partly located at the inlet In the water channel, water inlet resistance is formed, so it cannot meet the large flow demand of the plunger pump. In order to obtain a plunger pump with a small volume and a large flow rate, in this embodiment, referring to FIG. The pressure channel 341 and the water inlet channel 317 are independently arranged and distributed side by side in parallel, and a pressure relief device 342 is provided in the pressure relief channel 341 . It can avoid occupying the space of the water inlet channel, expand the flow rate of the water inlet channel 317, and the pressure relief device 341 is arranged in parallel with the water inlet channel 317, and can reduce the volume without affecting the performance of the plunger pump 3. The pressure relief device 342 includes a pressure relief valve plate 3421 and a first elastic member 3422 connected to and acting on the pressure relief valve plate 3421. The pressure of the water outlet channel 318 acts on the pressure relief device 342, so that the pressure relief valve plate 3421 is closed and opened. The states of the pressure relief channel 341 are switched. The first elastic member 3422 is a spring. However, the structures of the pressure relief device 342 and the first elastic member 3422 are not limited thereto.
参照图17和图18，所述进水通道317上设置有进水阀35，进水通道317包括分设于进水阀35两侧的阀前进水段3173和阀后出水段3174；所述进水阀35包括沿进水通道317径向设置的阀芯351、阀座352、第二弹性件353、导套354及插销355，所述阀座352具有与阀前进水段3173和阀后出水段3174相连通的空腔，所述阀芯351导向移动设置于所述空腔内并具有控制端3511，控制端3511与手持式高压清洗机的扳机24相连接并联动。阀芯351的外侧壁形成有密封段3512和过水槽3513，所述第二弹性件353作用于阀芯351用于使阀芯351在控制端3511无外力时自动复位，通过控制端3511控制阀芯351相对阀座352移动，使阀前进水段3173与阀后出水段3174之间通过过水槽3513相连通或通过密封段3512密封，从而控制阀前进水段3173与阀后出水段3174之间水路的通断。所述过水槽3513沿阀芯351延伸方向为上下对称结构，以使水压对过水槽3513上、下侧作用力大小相等、方向相反。导套354安装于阀座352空腔内，外侧通过插销355进行限位以防止其脱出，所述阀芯351及第二弹性件353导向移动安装于导套354内，对阀芯351的移动起到导向作用。第二弹性件353采用弹簧。如图17所示，阀芯351在初始位置时，水压对阀芯351过水槽3513上、下作用力大小相等、方向相反，相互抵消，从而拉动阀芯351时水压对阀芯351轴向无阻力；如图18所示，当打开阀芯351后，流道打开，水压对阀芯351轴向仍然无阻力，此时松开扳机24，阀芯351会在第二弹性件353的弹簧力作用下复位到初始位置。此过程按压扳机24拉动阀芯351时仅需克服弹簧力及摩擦力，不受水压阻碍，从而操作更省力，可提高产品使用舒适度。另外，进水阀35结构可适用于任意关枪联动装置，不限于扳机24。17 and 18, the water inlet channel 317 is provided with a water inlet valve 35, and the water inlet channel 317 includes a water inlet section 3173 and a water outlet section 3174 located on both sides of the water inlet valve 35; The water valve 35 includes a valve core 351 radially arranged along the water inlet channel 317, a valve seat 352, a second elastic member 353, a guide sleeve 354 and a bolt 355. The cavity connected to the section 3174, the valve core 351 is set in the cavity for guiding movement and has a control end 3511, and the control end 3511 is connected and linked with the trigger 24 of the hand-held high-pressure cleaner. The outer wall of the spool 351 is formed with a sealing section 3512 and a water-passing groove 3513. The second elastic member 353 acts on the spool 351 to make the spool 351 reset automatically when there is no external force at the control end 3511, and the valve is controlled through the control end 3511. The core 351 moves relative to the valve seat 352, so that the water section 3173 before the valve and the water outlet section 3174 after the valve are connected through the water tank 3513 or sealed by the sealing section 3512, thereby controlling the gap between the water section 3173 before the valve and the water outlet section 3174 after the valve The continuity of the waterway. The water passing groove 3513 has a symmetrical structure up and down along the extending direction of the valve core 351 , so that the force of water pressure on the upper and lower sides of the water passing groove 3513 is equal in magnitude and opposite in direction. The guide sleeve 354 is installed in the cavity of the valve seat 352, and the outside is limited by the latch 355 to prevent it from coming out. play a guiding role. The second elastic member 353 is a spring. As shown in Figure 17, when the spool 351 is in the initial position, the water pressure acts on the spool 351 to pass through the water tank 3513. The upper and lower forces are equal in magnitude and opposite in direction, and cancel each other out, so that when the spool 351 is pulled As shown in Figure 18, when the spool 351 is opened, the flow path is opened, and the water pressure still has no resistance to the axial direction of the spool 351. At this time, the trigger 24 is released, and the spool 351 will be on the second elastic member 353 Return to the initial position under the force of the spring. In this process, when the trigger 24 is pulled to pull the spool 351, only the spring force and the frictional force need to be overcome, and it is not hindered by the water pressure, so that the operation is more labor-saving and the comfort of the product can be improved. In addition, the structure of the water inlet valve 35 is applicable to any closing gun linkage device, not limited to the trigger 24 .
参照图11，柱塞腔319内设置有第一密封件361和第二密封件362，第一密封件361与柱塞316形成第一密封结构，避免第一高压腔室3151内液态水进入到传动机构33所在空间，第二密封件362与柱塞316形成第二密封结构，避免第二高压腔室3152内液态水进入到传动机构33所在空间，防止传动机构33内零件遇水生锈，提高柱塞泵3的使用寿命。第一密封件361、第二密封件362可以为密封环等结构。Referring to Fig. 11, a first sealing member 361 and a second sealing member 362 are arranged in the plunger cavity 319, and the first sealing member 361 and the plunger 316 form a first sealing structure to prevent liquid water in the first high-pressure chamber 3151 from entering into the In the space where the transmission mechanism 33 is located, the second sealing member 362 and the plunger 316 form a second sealing structure to prevent the liquid water in the second high-pressure chamber 3152 from entering the space where the transmission mechanism 33 is located, and prevent the internal parts of the transmission mechanism 33 from being rusted when exposed to water. Improve the service life of the plunger pump 3. The first sealing member 361 and the second sealing member 362 may be structures such as sealing rings.
参照图11，柱塞腔319内壁在靠近第一高压腔室3151一侧形成有第一导向套371，靠近第二高压腔室3152一侧形成有第二导向套372，所述柱塞316导向移动设置于第一 导向套371与第二导向套372之间，第一导向套371与第二导向套372用以导向柱塞316在第一、第二位置之间移动，提高柱塞316移动的精确度，此外，也可减小柱塞316往复运动时的磨损。现有的柱塞泵，导向套的安装位置过于靠近柱塞中部，与柱塞的顶端之间距离过大，不利于减小柱塞磨损，且导向精度不够。本实施例中，第一导向套371靠近第一高压腔室3151设置，第二导向套372靠近第二高压腔室3152设置，从而可提高导向精度，降低柱塞316磨损。11, the inner wall of the plunger chamber 319 is formed with a first guide sleeve 371 on the side close to the first high-pressure chamber 3151, and a second guide sleeve 372 is formed on the side close to the second high-pressure chamber 3152. The plunger 316 guides The movement is arranged between the first guide sleeve 371 and the second guide sleeve 372. The first guide sleeve 371 and the second guide sleeve 372 are used to guide the plunger 316 to move between the first and second positions, so as to improve the movement of the plunger 316. In addition, the wear of the plunger 316 during reciprocating motion can also be reduced. In the existing plunger pump, the installation position of the guide sleeve is too close to the middle of the plunger, and the distance between the guide sleeve and the top end of the plunger is too large, which is not conducive to reducing the wear of the plunger, and the guide precision is not enough. In this embodiment, the first guide sleeve 371 is arranged close to the first high-pressure chamber 3151 , and the second guide sleeve 372 is arranged close to the second high-pressure chamber 3152 , so that the guiding precision can be improved and the wear of the plunger 316 can be reduced.
柱塞泵3工作时，电机32通过偏心轴332驱动柱塞316往复运动，将柱塞316两端的第一高压腔室3151或第二高压腔室3152内的液态水加压，往复过程中水压的反作用力导致偏心轴332和柱塞316之间的柱塞轴承336承受很大的动载荷，压力越大的柱塞泵，其水压的反作用力越大，柱塞轴承336承受的承载力就越大，若该柱塞轴承336为球轴承，为了实现3-7MPa压力，柱塞轴承336的动载荷需要满足4-7KN以上，则需要选择较大直径的球轴承。而滚针轴承装有细而长的滚子(滚子长度为直径的3-10倍，直径一般不大于5mm)，因此径向结构紧凑，其内径尺寸和载荷能力与其他类型轴承相同时，外径最小。为了减小柱塞泵3的体积，本实施例中，如图21和图22所示，所述柱塞轴承336采用滚针轴承，有利于减小柱塞316长度。使用滚针轴承，实现3-7MPa同等压力，泵体31的体积比使用球轴承的泵体的体积小40-50％，达到小体积高载荷的效果。另外，当柱塞316与偏心轴输出端3322之间的配合面为规则平面时，因泵体31存在加工公差和装配误差，以及长期使用过程中的泵体磨损，造成泵体31的垂直度变差，柱塞316与偏心轴输出端3322之间的滚针轴承容易受力不均匀，使得滚针轴承出现尖端受力，滚针轴承的保持架容易受力损坏，导致滚针轴承损坏，缩短柱塞泵3的使用寿命。为了解决该问题，本实施例中，滚针轴承外侧壁设置为使滚针轴承与凹槽3161之间间隙在轴向上两端大于中部的弧形曲面3361，保证滚针轴承与柱塞316的配合面居中受力，避免滚针轴承的尖端磨损。另外，滚针轴承与第二轴承335之间设置有滑磨片339，从而可减小滚针轴承与第二轴承335之间端面的摩擦，减轻因摩擦导致的滚针轴承的损坏，提高滚针轴承的使用寿命。When the plunger pump 3 works, the motor 32 drives the plunger 316 to reciprocate through the eccentric shaft 332, pressurizing the liquid water in the first high-pressure chamber 3151 or the second high-pressure chamber 3152 at both ends of the plunger 316, and the water in the reciprocating process The pressure reaction force causes the plunger bearing 336 between the eccentric shaft 332 and the plunger 316 to bear a large dynamic load. The greater the pressure of the plunger pump, the greater the reaction force of the water pressure, and the load borne by the plunger bearing 336 The greater the force, if the plunger bearing 336 is a ball bearing, in order to achieve a pressure of 3-7 MPa, the dynamic load of the plunger bearing 336 needs to be above 4-7KN, and a ball bearing with a larger diameter needs to be selected. The needle roller bearing is equipped with thin and long rollers (the length of the roller is 3-10 times the diameter, and the diameter is generally not more than 5mm), so the radial structure is compact, and its inner diameter size and load capacity are the same as other types of bearings. Minimum outside diameter. In order to reduce the volume of the plunger pump 3 , in this embodiment, as shown in FIG. 21 and FIG. 22 , the plunger bearing 336 adopts a needle bearing, which is beneficial to reduce the length of the plunger 316 . Needle bearings are used to achieve the same pressure of 3-7MPa, and the volume of the pump body 31 is 40-50% smaller than that of the pump body using ball bearings, achieving the effect of small volume and high load. In addition, when the mating surface between the plunger 316 and the output end 3322 of the eccentric shaft is a regular plane, the verticality of the pump body 31 is caused by the machining tolerance and assembly error of the pump body 31, as well as the wear of the pump body during long-term use. become worse, the needle roller bearing between the plunger 316 and the output end 3322 of the eccentric shaft is prone to uneven force, which causes the tip of the needle roller bearing to be stressed, and the cage of the needle roller bearing is easily damaged by force, resulting in damage to the needle roller bearing. The service life of the plunger pump 3 is shortened. In order to solve this problem, in this embodiment, the outer wall of the needle roller bearing is set so that the gap between the needle roller bearing and the groove 3161 is larger than the arc-shaped curved surface 3361 in the middle at both ends in the axial direction, so as to ensure that the needle roller bearing and the plunger 316 The mating surface of the needle bearing is centered to avoid wear on the tip of the needle roller bearing. In addition, a sliding grinding sheet 339 is provided between the needle bearing and the second bearing 335, thereby reducing the friction on the end surface between the needle bearing and the second bearing 335, reducing the damage of the needle bearing caused by friction, and improving the rolling capacity. The service life of the needle bearing.
参照图23，所述泵体31形成有用于容纳所述柱塞轴承336的轴承腔381，所述泵体31在轴承腔381处开设有连通轴承腔381内部与泵体31外部的排水孔382。本实施例中，柱塞316横向布置，排水孔382设置于外壳2底部，排水孔382与柱塞316垂直设置。Referring to FIG. 23 , the pump body 31 is formed with a bearing cavity 381 for accommodating the plunger bearing 336 , and the pump body 31 is provided with a drainage hole 382 connecting the inside of the bearing cavity 381 and the outside of the pump body 31 at the bearing cavity 381 . In this embodiment, the plunger 316 is arranged horizontally, the drainage hole 382 is arranged at the bottom of the housing 2 , and the drainage hole 382 is arranged perpendicular to the plunger 316 .
参照图19和图20，所述传动机构33采用行星齿轮传动结构，包括行星支架331、行星齿轮组、偏心轴332、轴承及轴承定位支架333。所述偏心轴332包括偏心轴输入端3321、偏心轴输出端3322及连接于偏心轴输入端3321与偏心轴输出端3322之间并与偏心轴输入端3321同轴设置的中间连接部3323，偏心轴输入端3321、中间连接部3323及偏心轴输出端3322外部分别对应设置有第一轴承334、第二轴承335和柱塞轴承336，以将偏心轴332相对稳定地定位在泵体31内，转动时不易产生震动，减小噪音并提高稳定性。所述第一轴承334、第二轴承335安装于轴承定位支架333上，所述行星齿轮组包括三个依次啮合的行星齿轮337，三个行星齿轮337通过销轴338转动安装于行星支架331上。行星支架331、销轴338、偏心轴332、第一轴承334、第二轴承335、柱塞轴承336及轴承定位支架333之间通过过盈配合连接。零件可分别独立加工，显著的简化了传动轴、行星支架等零件的加工工艺，可有效降低总体成本。电机32动力输出轴外端 固定套设有太阳轮321，太阳轮321与行星齿轮组中的第一级行星齿轮337啮合传动连接，偏心轴输入端与第三级行星齿轮337同步转动连接。19 and 20 , the transmission mechanism 33 adopts a planetary gear transmission structure, including a planet carrier 331 , a planetary gear set, an eccentric shaft 332 , a bearing and a bearing positioning bracket 333 . The eccentric shaft 332 includes an eccentric shaft input end 3321, an eccentric shaft output end 3322, and an intermediate connecting portion 3323 connected between the eccentric shaft input end 3321 and the eccentric shaft output end 3322 and coaxially arranged with the eccentric shaft input end 3321. The shaft input end 3321, the intermediate connection portion 3323 and the eccentric shaft output end 3322 are respectively provided with a first bearing 334, a second bearing 335 and a plunger bearing 336 to position the eccentric shaft 332 in the pump body 31 relatively stably. It is not easy to generate vibration when turning, reducing noise and improving stability. The first bearing 334 and the second bearing 335 are installed on the bearing positioning bracket 333, and the planetary gear set includes three planetary gears 337 meshed in sequence, and the three planetary gears 337 are rotatably mounted on the planetary bracket 331 through a pin shaft 338 . The planet carrier 331 , the pin shaft 338 , the eccentric shaft 332 , the first bearing 334 , the second bearing 335 , the plunger bearing 336 and the bearing positioning bracket 333 are connected by interference fit. The parts can be processed independently, which significantly simplifies the processing technology of transmission shafts, planetary supports and other parts, and can effectively reduce the overall cost. The fixed sleeve at the outer end of the power output shaft of the motor 32 is provided with a sun gear 321. The sun gear 321 is meshed with the first-stage planetary gear 337 in the planetary gear set, and the input end of the eccentric shaft is connected with the third-stage planetary gear 337 for synchronous rotation.
所述泵体31包括泵壳体，由所述泵身311、泵头312、左泵盖313、右泵盖314及进水管件3110连接而成；所述传动机构包括传动支撑机构，包括所述行星支架331及轴承定位支架333；所述泵体31的泵壳体及所述传动机构33的传动支撑机构均采用塑料材质，在满足产品性能、寿命的前提下，使机器最小、重量最轻、成本最低。优选地，裸机重量(不包括电池包)不超过2.2Kg。The pump body 31 includes a pump casing, which is formed by connecting the pump body 311, the pump head 312, the left pump cover 313, the right pump cover 314 and the water inlet pipe 3110; the transmission mechanism includes a transmission support mechanism, including the The planetary bracket 331 and the bearing positioning bracket 333; the pump casing of the pump body 31 and the transmission support mechanism of the transmission mechanism 33 are all made of plastic materials, and the machine is made the smallest and the weight is the smallest under the premise of satisfying product performance and life. Lightweight and lowest cost. Preferably, the weight of the bare metal (excluding the battery pack) does not exceed 2.2Kg.
参照图9和图10，所述整机主体还包括形成于外壳2上用以握持的手柄22、可转动安装于外壳2上用以启闭手持式高压清洗机的开关件及配置于外壳2上用于供电的电源部23。所述手柄22位于外壳2后侧，电源部23设置在手柄22前侧，电源部23和柱塞泵3的电机32电性连接，且电源部23与电机32之间还设置有用以控制电机启动或停止的触点开关(未图示)，至少部分实现电性连接的线缆(未图示)设置在手柄22内部。所述电源部23可以为电池包或用以外接市电的电源线。所述开关件设置在手柄22与电源部23之间，开关件与所述进水阀35的阀芯351相联动。优选地，本实施例中，电源部23为电池包，开关件为扳机24。通过将电源部23以及开关件设置在手柄22附近，方便走线，使得手持式高压清洗机的整体结构更为紧凑。Referring to Fig. 9 and Fig. 10, the main body of the whole machine also includes a handle 22 formed on the casing 2 for holding, a switch part rotatably mounted on the casing 2 for opening and closing the hand-held high-pressure cleaner and configured on the casing 2 on the power supply unit 23 for power supply. The handle 22 is located on the rear side of the housing 2, and the power supply unit 23 is arranged on the front side of the handle 22. The power supply unit 23 is electrically connected to the motor 32 of the plunger pump 3, and there is also a device between the power supply unit 23 and the motor 32 to control the motor. A contact switch (not shown) for starting or stopping, and at least part of a cable (not shown) for electrical connection are arranged inside the handle 22 . The power supply unit 23 can be a battery pack or a power cord used to connect to the commercial power. The switch part is arranged between the handle 22 and the power supply part 23 , and the switch part is linked with the valve core 351 of the water inlet valve 35 . Preferably, in this embodiment, the power supply unit 23 is a battery pack, and the switch element is a trigger 24 . By arranging the power supply part 23 and the switch part near the handle 22, wiring is convenient, and the overall structure of the hand-held high-pressure cleaner is more compact.
参照图24至图27，本发明第二实施例的手持式高压清洗机，与第一实施例的区别在于：Referring to Fig. 24 to Fig. 27, the difference between the hand-held high-pressure cleaner of the second embodiment of the present invention and the first embodiment is that:
本实施例的进水通道317上不设置所述进水阀35。The water inlet valve 35 is not provided on the water inlet channel 317 in this embodiment.
参照图26，所述传动机构33为外啮合传动结构。所述偏心轴输入端3321与所述电机32的动力输出轴平行设置并位于不同轴线上，偏心轴输入端3321与电机32的动力输出轴在轴向上具有相互干涉区段，以便通过在径向平面排布的传动组件将偏心轴输入端3321与电机32动力输出轴传动连接，以节省轴向空间。所述传动组件可以包括互相啮合的第一齿轮3301和第二齿轮3302，第一齿轮3301固定套设在电机32动力输出轴上，第二齿轮3302固定套设在偏心轴输入端3321上，启动电机32，电机32动力输出轴带动第一齿轮3301同步转动，进而带动第二齿轮3302和偏心轴332转动。传动组件结构不限于此，第一齿轮3301和第二齿轮3302之间还可以设置其它齿轮，第一齿轮3301和第二齿轮3302之间也可以为内啮合。Referring to Fig. 26, the transmission mechanism 33 is an external meshing transmission structure. The eccentric shaft input end 3321 is arranged in parallel with the power output shaft of the motor 32 and is located on different axes. The transmission assembly arranged in a plane connects the input end 3321 of the eccentric shaft with the power output shaft of the motor 32 to save space in the axial direction. The transmission assembly may include a first gear 3301 and a second gear 3302 that mesh with each other. The first gear 3301 is fixedly sleeved on the power output shaft of the motor 32, and the second gear 3302 is fixedly sleeved on the input end 3321 of the eccentric shaft. The motor 32 and the power output shaft of the motor 32 drive the first gear 3301 to rotate synchronously, and then drive the second gear 3302 and the eccentric shaft 332 to rotate. The structure of the transmission assembly is not limited thereto, other gears may be provided between the first gear 3301 and the second gear 3302 , and the first gear 3301 and the second gear 3302 may also be internally meshed.
所述泵体31纵向布置，即柱塞316沿纵向布置，所述排水孔382开设于外壳2两侧，排水孔382与柱塞垂直设置。The pump body 31 is arranged longitudinally, that is, the plunger 316 is arranged longitudinally, and the drainage holes 382 are opened on both sides of the casing 2, and the drainage holes 382 are vertically arranged to the plunger.
参照图24，所述电源部23连接于手柄22下方。Referring to FIG. 24 , the power supply unit 23 is connected under the handle 22 .
本实施例中，优选地，所述泵体31输出的额定压力为3-6MPa，泵体流量200-250L/h，泵体31被经过所述柱塞316并且与所述电机32的动力输出轴轴向相垂直的平面所截的横截面中，70％以上的横截面的面积为33.6-59.6cm 2(由于泵体外缘可能存在凹凸不平的情况，或是在泵体的表面设置一些用于固定的筋位或凹槽，导致泵体的高度H和泵体的宽度W不是固定的值，影响泵体的横截面面积)；泵体31的高度H为79.2-98.5mm，宽度W为40.5-60.5mm；偏心轴332的偏心距为3.1-3.5mm；柱塞316的行程为6.2-7.0mm。 In this embodiment, preferably, the rated pressure output by the pump body 31 is 3-6MPa, the flow rate of the pump body is 200-250L/h, the pump body 31 is passed through the plunger 316 and connected with the power output of the motor 32 Among the cross-sections cut by the plane perpendicular to the axial direction, more than 70% of the cross-sectional area is 33.6-59.6cm 2 (due to the unevenness of the outer edge of the pump body, or the surface of the pump body. Because of the fixed rib or groove, the height H of the pump body and the width W of the pump body are not fixed values, which affect the cross-sectional area of the pump body); the height H of the pump body 31 is 79.2-98.5mm, and the width W is 40.5-60.5mm; the eccentricity of the eccentric shaft 332 is 3.1-3.5mm; the stroke of the plunger 316 is 6.2-7.0mm.
参照图28，本发明第三实施例的手持式高压清洗机与第一实施例的区别在于：为保证滚针轴承与柱塞316的配合面居中受力，避免滚针轴承的尖端磨损，本实施例中，将柱塞凹槽3161内侧壁在轴向上的两端分别倒角，以使滚针轴承两端不与柱塞凹槽3161 内侧壁接触，避免滚针轴承尖端受力。具体地，在柱塞凹槽3161开口一端形成第一斜面3162，远离开口一端形成第二斜面3163。Referring to Fig. 28, the difference between the hand-held high-pressure cleaning machine of the third embodiment of the present invention and the first embodiment is that: in order to ensure that the mating surface of the needle roller bearing and the plunger 316 is stressed at the center, and to avoid the tip wear of the needle roller bearing, this In the embodiment, the two axial ends of the inner wall of the plunger groove 3161 are respectively chamfered, so that the two ends of the needle roller bearing do not contact the inner wall of the plunger groove 3161, so as to avoid stress on the tip of the needle roller bearing. Specifically, a first slope 3162 is formed at the opening end of the plunger groove 3161 , and a second slope 3163 is formed at the end away from the opening.
参照图29，本发明第四实施例的手持式高压清洗机与第一实施例的区别在于：为保证滚针轴承与柱塞316的配合面居中受力，避免滚针轴承的尖端磨损，本实施例中，将柱塞凹槽3161内侧壁在轴向上的外端倒角、内端开槽，以使滚针轴承两端不与柱塞凹槽3161内侧壁接触，避免滚针轴承尖端受力。具体地，在柱塞凹槽3161开口一端形成第三斜面3164，远离开口一端形成环形槽3165。Referring to Fig. 29, the difference between the hand-held high-pressure cleaning machine of the fourth embodiment of the present invention and the first embodiment is that: in order to ensure that the mating surface of the needle roller bearing and the plunger 316 is stressed at the center, and to avoid the tip wear of the needle roller bearing, this In the embodiment, the axially outer end of the inner wall of the plunger groove 3161 is chamfered, and the inner end is grooved, so that the two ends of the needle roller bearing do not contact the inner wall of the plunger groove 3161, and the tip of the needle roller bearing is avoided. Force. Specifically, a third slope 3164 is formed at the opening end of the plunger groove 3161 , and an annular groove 3165 is formed at the end away from the opening.
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.
以上实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above examples only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the patent for the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (22)

  1. 一种手持式高压清洗机，其特征在于，包括整机主体，整机主体包括泵体、电机及传动机构；A hand-held high-pressure cleaning machine is characterized in that it includes a main body of the whole machine, and the main body of the whole machine includes a pump body, a motor and a transmission mechanism;
    所述电机通过传动机构与泵体连接，用于驱动泵体运转；The motor is connected to the pump body through a transmission mechanism to drive the pump body to run;
    所述泵体为柱塞泵泵体，包括高压腔室、柱塞、进水通道及出水通道，所述柱塞能够相对高压腔室做往复运动以对水流进行加压，所述进水通道和出水通道分别与高压腔室相连通；The pump body is a plunger pump body, including a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel. The plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow. The water inlet channel and the water outlet channel are respectively connected with the high-pressure chamber;
    所述泵体输出的额定压力为3-7Mpa，所述电机在其动力输出轴轴向上的尺寸、所述泵体在其柱塞延伸方向上的尺寸及所述传动机构的宽度和高度中尺寸较小者的乘积为190-230cm 3。 The rated pressure output by the pump body is 3-7Mpa, the size of the motor in the axial direction of its power output shaft, the size of the pump body in the direction of its plunger extension, and the width and height of the transmission mechanism The product of the smaller size is 190-230cm 3 .
  2. 根据权利要求1所述的手持式高压清洗机，其特征在于，所述整机主体还包括外壳，所述电机、传动机构及泵体安装于所述外壳内；The hand-held high-pressure cleaning machine according to claim 1, wherein the main body of the whole machine also includes a casing, and the motor, transmission mechanism and pump body are installed in the casing;
    所述外壳在所述泵体的出水通道前端形成有用于连接出水枪管的枪管接口；The shell is formed with a gun barrel interface for connecting the water outlet gun tube at the front end of the water outlet channel of the pump body;
    所述整机主体配置为：在电机动力输出轴轴向上，由电机后缘至柱塞前缘的长度与由外壳后缘至枪管接口前缘的长度的比值为0.2-0.35。The main body of the complete machine is configured as follows: in the axial direction of the power output shaft of the motor, the ratio of the length from the rear edge of the motor to the front edge of the plunger to the length from the rear edge of the shell to the front edge of the barrel interface is 0.2-0.35.
  3. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述电机配置为外转子无刷电机，长度为42-55mm。The hand-held high-pressure cleaner according to claim 1 or 2, wherein the motor is configured as an outer rotor brushless motor with a length of 42-55mm.
  4. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述泵体在其柱塞延伸方向上的尺寸为75-109.5mm。The hand-held high-pressure cleaner according to claim 1 or 2, characterized in that, the size of the pump body in the direction in which the plunger extends is 75-109.5mm.
  5. 根据权利要求4所述的手持式高压清洗机，其特征在于，所述高压腔室包括分别与所述柱塞的两端相对应配合设置的第一高压腔室和第二高压腔室；所述传动机构包括偏心轴，偏心轴输入端与电机动力输出轴传动连接，偏心轴输出端与柱塞转动连接，偏心轴的偏心距为3-6mm；所述传动机构将电机的旋转运动转化为柱塞的直线往复运动以使柱塞交替压缩或释放第一、第二高压腔室。The hand-held high-pressure cleaning machine according to claim 4, wherein the high-pressure chamber includes a first high-pressure chamber and a second high-pressure chamber respectively corresponding to the two ends of the plunger; The transmission mechanism includes an eccentric shaft, the input end of the eccentric shaft is connected with the power output shaft of the motor, the output end of the eccentric shaft is connected with the plunger in rotation, and the eccentric distance of the eccentric shaft is 3-6 mm; the transmission mechanism converts the rotational motion of the motor into The linear reciprocating motion of the plunger causes the plunger to alternately compress or release the first and second high pressure chambers.
  6. 根据权利要求4所述的手持式高压清洗机，其特征在于，所述传动机构包括偏心轴，偏心轴输入端与电机动力输出轴传动连接，柱塞中部开设有用于连接偏心轴输出端的凹槽，偏心轴输出端至少部分收容在所述凹槽内并与柱塞通过柱塞轴承转动连接，所述柱塞轴承采用滚针轴承。The hand-held high-pressure cleaner according to claim 4, wherein the transmission mechanism includes an eccentric shaft, the input end of the eccentric shaft is connected to the power output shaft of the motor, and the middle part of the plunger is provided with a groove for connecting the output end of the eccentric shaft The output end of the eccentric shaft is at least partially accommodated in the groove and is rotationally connected with the plunger through a plunger bearing, and the plunger bearing adopts a needle bearing.
  7. 根据权利要求6所述的手持式高压清洗机，其特征在于，所述滚针轴承外侧壁或凹槽内侧壁配置为使滚针轴承与凹槽之间间隙在轴向上两端大于中部。The hand-held high-pressure cleaner according to claim 6, characterized in that, the outer wall of the needle bearing or the inner wall of the groove is configured such that the gap between the needle bearing and the groove is larger at both ends in the axial direction than in the middle.
  8. 根据权利要求6所述的手持式高压清洗机，其特征在于，所述凹槽在所述柱塞轴承轴向上的深度不小于所述柱塞的直径尺寸的1/2。The hand-held high-pressure cleaner according to claim 6, wherein the depth of the groove in the axial direction of the plunger bearing is not less than 1/2 of the diameter of the plunger.
  9. 根据权利要求4所述的手持式高压清洗机，其特征在于，所述泵体的柱塞沿水平方向布置，并与所述电机的动力输出轴轴向相垂直。The hand-held high-pressure cleaner according to claim 4, wherein the plunger of the pump body is arranged in a horizontal direction and is perpendicular to the axis of the power output shaft of the motor.
  10. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述传动机构为齿轮箱，所述齿轮箱的宽度和高度中尺寸较小者为50-55mm。The hand-held high-pressure cleaner according to claim 1 or 2, wherein the transmission mechanism is a gear box, and the width and height of the gear box are the smaller of 50-55 mm.
  11. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述柱塞的直径为10-16mm，泵体在垂直于柱塞延伸方向并垂直于电机动力输出轴轴向上的尺寸为40.5-68.5mm。The hand-held high-pressure cleaner according to claim 1 or 2, wherein the diameter of the plunger is 10-16mm, and the pump body is perpendicular to the extension direction of the plunger and perpendicular to the axial direction of the motor power output shaft. The size is 40.5-68.5mm.
  12. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述泵体的流量为180-300L/h。The hand-held high-pressure cleaner according to claim 1 or 2, characterized in that the flow rate of the pump body is 180-300 L/h.
  13. 根据权利要求12所述的手持式高压清洗机，其特征在于，所述进水通道与出水通道之间设置有用于连通进水通道和出水通道的泄压通道，泄压通道与进水通道分别独立设置且并排分布，泄压通道内设置有泄压装置，泄压装置包括泄压阀片及连接并作用于泄压阀片的第一弹性件，出水通道压力作用于泄压装置，使所述泄压阀片在封闭和打开所述泄压通道状态间切换。The hand-held high-pressure cleaner according to claim 12, wherein a pressure relief channel for connecting the water inlet channel and the water outlet channel is provided between the water inlet channel and the water outlet channel, and the pressure relief channel and the water inlet channel are respectively Independently arranged and distributed side by side, a pressure relief device is provided in the pressure relief channel, the pressure relief device includes a pressure relief valve plate and a first elastic member connected and acting on the pressure relief valve plate, the pressure of the water outlet channel acts on the pressure relief device, so that all The pressure relief valve plate is switched between the state of closing and opening the pressure relief channel.
  14. 根据权利要求12所述的手持式高压清洗机，其特征在于，所述高压腔室具有高压腔室进水口和高压腔室出水口，进水通道通过进水单向阀与高压腔室进水口相连通，出水通道通过出水单向阀与高压腔室出水口相连通，所述进水单向阀与所述高压腔室进水口之间的流道横截面积不小于35mm 2。 The hand-held high-pressure cleaning machine according to claim 12, wherein the high-pressure chamber has a water inlet of the high-pressure chamber and a water outlet of the high-pressure chamber, and the water inlet channel passes through the water inlet check valve and the water inlet of the high-pressure chamber The water outlet channel is connected to the water outlet of the high-pressure chamber through the water outlet one-way valve, and the cross-sectional area of the flow channel between the water inlet one-way valve and the water inlet of the high-pressure chamber is not less than 35mm 2 .
  15. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述进水通道上设置有进水阀，进水通道包括分设于进水阀两侧的阀前进水段和阀后出水段；The hand-held high-pressure cleaner according to claim 1 or 2, characterized in that, the water inlet channel is provided with a water inlet valve, and the water inlet channel includes a valve inlet water section and a valve rear valve respectively arranged on both sides of the water inlet valve. Outlet section;
    所述进水阀包括沿进水通道径向设置的阀芯、阀座和第二弹性件，所述阀座具有与阀前进水段和阀后出水段相连通的空腔，所述阀芯导向移动设置于所述空腔内并具有控制端，阀芯的外侧壁形成有密封段和过水槽，所述第二弹性件作用于阀芯用于使阀芯在控制端无外力时自动复位，通过控制端控制阀芯相对阀座移动，使阀前进水段与阀后出水段之间通过过水槽相连通或通过密封段密封，从而控制阀前进水段与阀后出水段之间水路的通断。The water inlet valve includes a valve core arranged radially along the water inlet channel, a valve seat and a second elastic member, the valve seat has a cavity communicating with the water inlet section of the valve and the water outlet section after the valve, the valve core The guiding movement is set in the cavity and has a control end. The outer wall of the valve core is formed with a sealing section and a water tank. The second elastic member acts on the valve core to make the valve core reset automatically when there is no external force at the control end. , through the control end to control the movement of the valve core relative to the valve seat, so that the water section before the valve and the water outlet section after the valve are connected through the water tank or sealed by the sealing section, so as to control the water flow between the water section before the valve and the water outlet section after the valve on and off.
  16. 根据权利要求15所述的手持式高压清洗机，其特征在于，所述过水槽沿阀芯延伸方向为上下对称结构，以使水压对过水槽上、下侧作用力大小相等、方向相反。The hand-held high-pressure cleaner according to claim 15, characterized in that, the water flow tank has a vertically symmetrical structure along the extension direction of the valve core, so that the force of water pressure on the upper and lower sides of the water flow tank is equal in magnitude and opposite in direction.
  17. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述传动机构包括偏心轴，偏心轴输出端与柱塞通过柱塞轴承转动连接，所述泵体形成有用于容纳所述柱塞轴承的轴承腔，所述泵体上开设有连通轴承腔内部与泵体外部的排水孔。The hand-held high-pressure cleaner according to claim 1 or 2, wherein the transmission mechanism includes an eccentric shaft, the output end of the eccentric shaft is connected to the plunger through a plunger bearing for rotation, and the pump body is formed to accommodate the The bearing cavity of the plunger bearing is described, and the pump body is provided with a drainage hole connecting the inside of the bearing cavity and the outside of the pump body.
  18. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述泵体包括泵壳体，所述传动机构包括传动支撑机构，所述泵壳体及所述传动支撑机构均配置为塑料材质。The hand-held high-pressure cleaner according to claim 1 or 2, wherein the pump body includes a pump casing, the transmission mechanism includes a transmission support mechanism, and the pump casing and the transmission support mechanism are both configured Made of plastic.
  19. 根据权利要求1或2所述的手持式高压清洗机，其特征在于，所述传动机构配置为行星齿轮传动结构，包括行星支架、行星齿轮组、偏心轴、轴承及轴承定位支架，所述偏心轴输入端、输出端分别对应设置有轴承，所述轴承安装于轴承定位支架上，所述行星齿轮组通过销轴转动安装于行星支架上，所述行星支架、销轴、偏心轴、轴承及轴承定位支架之间通过过盈配合连接。The hand-held high-pressure cleaning machine according to claim 1 or 2, wherein the transmission mechanism is configured as a planetary gear transmission structure, including a planetary carrier, a planetary gear set, an eccentric shaft, a bearing and a bearing positioning bracket, and the eccentric The shaft input end and the output end are respectively provided with bearings, the bearings are installed on the bearing positioning bracket, and the planetary gear set is installed on the planetary support through the rotation of the pin shaft, and the planetary support, pin shaft, eccentric shaft, bearing and The bearing positioning brackets are connected through interference fit.
  20. 一种手持式高压清洗机，其特征在于，包括手持喷枪壳体及设置于手持喷枪壳体内的泵体、传动机构及电机；A hand-held high-pressure cleaning machine, characterized in that it includes a hand-held spray gun housing and a pump body, a transmission mechanism and a motor arranged in the hand-held spray gun housing;
    所述手持喷枪壳体形成有水流喷口；The housing of the hand-held spray gun is formed with a water flow nozzle;
    所述泵体包括高压腔室、柱塞、进水通道及出水通道，所述柱塞能够相对高压腔室做往复运动以对水流进行加压，所述进水通道和出水通道分别与所述高压腔室相连通，所述出水通道与所述水流喷口相连通；The pump body includes a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel. The plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow. The water inlet channel and the water outlet channel are respectively connected to the The high-pressure chamber is connected, and the water outlet channel is connected with the water flow nozzle;
    所述传动机构包括减速器，所述电机通过所述减速器连接并驱动所述柱塞相对高压腔室作往复运动；The transmission mechanism includes a reducer, the motor is connected through the reducer and drives the plunger to reciprocate relative to the high-pressure chamber;
    所述电机配置为外转子无刷电机，所述电机在其动力输出轴轴向上的尺寸为42-55mm，在电机动力输出轴轴向上由电机后缘至柱塞前缘的尺寸为95～110mm。The motor is configured as an outer rotor brushless motor, the size of the motor in the axial direction of its power output shaft is 42-55mm, and the size from the rear edge of the motor to the front edge of the plunger in the axial direction of the motor power output shaft is 95mm ~110mm.
  21. 一种柱塞泵，其特征在于，包括：A plunger pump is characterized in that it comprises:
    泵体，包括高压腔室、柱塞、进水通道及出水通道，所述柱塞能够相对高压腔室做往复运动以对水流进行加压，所述进水通道和出水通道分别与高压腔室相连通；The pump body includes a high-pressure chamber, a plunger, a water inlet channel and a water outlet channel. The plunger can reciprocate relative to the high-pressure chamber to pressurize the water flow. The water inlet channel and the water outlet channel are respectively connected to the high-pressure chamber Connected;
    驱动件，通过动力输出轴输出旋转驱动力；The driving part outputs the rotational driving force through the power output shaft;
    及传动机构，连接于所述驱动件与柱塞之间，用于将驱动件的旋转运动转换成柱塞的往复运动；and a transmission mechanism, connected between the driving member and the plunger, for converting the rotational motion of the driving member into the reciprocating motion of the plunger;
    其中：所述泵体输出的额定压力为3-7MPa，泵体被经过所述柱塞并且与所述驱动件的动力输出轴轴向相垂直的平面所截的横截面中至少部分横截面的面积为33.6-59.6cm 2。 Wherein: the rated pressure output by the pump body is 3-7MPa, at least part of the cross-section of the pump body is cut by a plane passing through the plunger and perpendicular to the axial direction of the power output shaft of the drive member The area is 33.6-59.6 cm 2 .
  22. 根据权利要求21所述的手持式高压清洗机，其特征在于，所述传动机构包括偏心轴，偏心轴输入端与所述驱动件的动力输出轴平行设置并位于不同轴线上，所述偏心轴输入端与所述驱动件的动力输出轴在轴向上具有相互干涉区段，用以通过在径向平面排布的传动组件将偏心轴输入端与驱动件动力输出轴传动连接。The hand-held high-pressure cleaning machine according to claim 21, wherein the transmission mechanism includes an eccentric shaft, the input end of the eccentric shaft is arranged in parallel with the power output shaft of the driving member and is located on different axes, and the eccentric shaft The input end and the power output shaft of the driving member have a mutual interference section in the axial direction, and are used to drive and connect the input end of the eccentric shaft and the power output shaft of the driving member through a transmission assembly arranged in a radial plane.
PCT/CN2022/110274 2021-08-04 2022-08-04 Plunger pump and hand-held high-pressure cleaning machine WO2023011590A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202121810583.6 2021-08-04
CN202121810583.6U CN215805108U (en) 2021-08-04 2021-08-04 Plunger pump and hand-held type cleaning machine

Publications (1)

Publication Number Publication Date
WO2023011590A1 true WO2023011590A1 (en) 2023-02-09

Family

ID=80128344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/110274 WO2023011590A1 (en) 2021-08-04 2022-08-04 Plunger pump and hand-held high-pressure cleaning machine

Country Status (2)

Country Link
CN (1) CN215805108U (en)
WO (1) WO2023011590A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN215805108U (en) * 2021-08-04 2022-02-11 苏州宝时得电动工具有限公司 Plunger pump and hand-held type cleaning machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014233665A (en) * 2013-05-31 2014-12-15 日立工機株式会社 Pump for high pressure washer, and high pressure washer
CN108160366A (en) * 2016-12-06 2018-06-15 苏州宝时得电动工具有限公司 Handheld high-voltage cleaning machine
CN108533471A (en) * 2017-03-03 2018-09-14 苏州宝时得电动工具有限公司 Handheld high-voltage cleaning machine
CN209687668U (en) * 2019-03-01 2019-11-26 宝时得科技（中国）有限公司 A kind of pump unit and jetting machine
CN214741894U (en) * 2020-12-24 2021-11-16 陆丽敏 Handheld cleaning machine
CN215805108U (en) * 2021-08-04 2022-02-11 苏州宝时得电动工具有限公司 Plunger pump and hand-held type cleaning machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014233665A (en) * 2013-05-31 2014-12-15 日立工機株式会社 Pump for high pressure washer, and high pressure washer
CN108160366A (en) * 2016-12-06 2018-06-15 苏州宝时得电动工具有限公司 Handheld high-voltage cleaning machine
CN108533471A (en) * 2017-03-03 2018-09-14 苏州宝时得电动工具有限公司 Handheld high-voltage cleaning machine
CN209687668U (en) * 2019-03-01 2019-11-26 宝时得科技（中国）有限公司 A kind of pump unit and jetting machine
CN214741894U (en) * 2020-12-24 2021-11-16 陆丽敏 Handheld cleaning machine
CN215805108U (en) * 2021-08-04 2022-02-11 苏州宝时得电动工具有限公司 Plunger pump and hand-held type cleaning machine

Also Published As

Publication number Publication date
CN215805108U (en) 2022-02-11

Similar Documents

Publication Publication Date Title
US11708822B2 (en) Handheld high-pressure cleaning machine
WO2023011590A1 (en) Plunger pump and hand-held high-pressure cleaning machine
CN108433654B (en) Water tank and cleaning device with same
CN215918369U (en) Reciprocating structure of cleaning machine and handheld cleaning machine
CN108194332B (en) Peristaltic pump based on hose removes
WO2023001077A1 (en) Cleaner reciprocating structure and handheld cleaner
KR20240037281A (en) handheld dishwasher
CN109675737A (en) Handheld high-voltage cleaning machine
CN108514967B (en) Handheld direct-current high-pressure water gun
CN210977781U (en) Pump unit and hand-held type high pressure cleaner
CN218981969U (en) Handheld high-pressure cleaning machine
CN213419279U (en) Novel eccentric wheel crankshaft cleaning pump
CN110594121A (en) Pump unit and hand-held type high pressure cleaner
WO2021082909A1 (en) Handheld high-pressure washer and washer
JP2015033684A (en) Washing machine
CN213669972U (en) Novel wireless handheld water gun for car washing
CN200999036Y (en) Improved type hand-held automobile cleaning machine
CN114382441A (en) Oil pumping unit based on tower frame
CN111452759B (en) New energy automobile wheel hub cleaning equipment
WO2019076349A1 (en) Hand-held high-pressure cleaning machine
CN209743104U (en) Plunger unit, pump, high-pressure cleaning machine and handheld high-pressure cleaning machine
CN115773216A (en) Plunger pump and hand-held type cleaning machine
CN217747563U (en) Hand-held high-pressure airless spray gun
CN212759222U (en) Thin miniature water pump structure of handheld cleaner
CN207546814U (en) Handheld high-voltage cleaning machine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22852301

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022852301

Country of ref document: EP

Effective date: 20240304

122 Ep: pct application non-entry in european phase

Ref document number: 22852301

Country of ref document: EP

Kind code of ref document: A1