CN104776004B - Plunger pump of high-pressure airless sprayer - Google Patents

Plunger pump of high-pressure airless sprayer Download PDF

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Publication number
CN104776004B
CN104776004B CN201510188235.2A CN201510188235A CN104776004B CN 104776004 B CN104776004 B CN 104776004B CN 201510188235 A CN201510188235 A CN 201510188235A CN 104776004 B CN104776004 B CN 104776004B
Authority
CN
China
Prior art keywords
piston
pressure
swash plate
pump housing
balance columns
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201510188235.2A
Other languages
Chinese (zh)
Other versions
CN104776004A (en
Inventor
黄小良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taizhou Vocational and Technical College
Original Assignee
Taizhou Vocational and Technical College
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 Taizhou Vocational and Technical College filed Critical Taizhou Vocational and Technical College
Priority to CN201610403515.5A priority Critical patent/CN106050598A/en
Priority to CN201510188235.2A priority patent/CN104776004B/en
Priority to CN201610408894.7A priority patent/CN106014954B/en
Publication of CN104776004A publication Critical patent/CN104776004A/en
Application granted granted Critical
Publication of CN104776004B publication Critical patent/CN104776004B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08Regulating by delivery pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0413Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with reciprocating pumps, e.g. membrane pump, piston pump, bellow pump
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/047Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06Control using electricity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00Motor parameters
    • F04B2203/02Motor parameters of rotating electric motors
    • F04B2203/0209Rotational speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00Fluid parameters
    • F04B2205/04Pressure in the outlet chamber

Landscapes

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

Abstract

The invention provides a kind of plunger pump of high-pressure airless sprayer, belong to technical field of operation.This plunger pump of high-pressure airless sprayer includes the pump housing, decelerator and motor, is provided with piston in plunger cavity, and reducer output shaft is fixed with swash plate, and piston is arranged with the first spring making piston and swash plate lean;The face leant with piston in swash plate is obliquely installed relative to reducer output shaft;Also being equipped with a balance columns in the pump housing, balance columns arranges relative to reducer output shaft centrosymmetry with piston, balance columns is arranged with the second spring making balance columns and swash plate lean.Motor runs through decelerator deceleration and drives swash plate to turn to rotation, balance columns and piston to move back and forth under swash plate top pressure and spring force effect, and the reciprocating motion of piston change plunger cavity volume, and then realize the cyclic process of suction and binder.Balance columns is set and the second spring is effectively improved swash plate kinetic stability.Piston is axially in parallel with electric machine main shaft, the advantage with compact conformation.

Description

Plunger pump of high-pressure airless sprayer
Technical field
The invention belongs to technical field of operation, relate to a kind of injection apparatus, particularly a kind of Plunger pump of high-pressure airless sprayer.
Background technology
High pressure airless spray equipment is to use booster pump coating to be increased to high pressure, by the thinnest Spray orifice sprays, and makes coating be formed fan-shaped vaporific;Booster pump is plunger displacement pump or membrane pump.
Pertinent literature about plunger pump of high-pressure airless sprayer is more, such as Chinese patent literary composition Offer a kind of multifunctional coating of record, paint special high-pressure airless sprayer (Granted publication Number: CN203417793U), plunger pump for high-pressure airless sprayer (Authorization Notice No. CN201209539Y), it is intended that propose the high pressure airless spray equipment post of another kind of structure Plug pump.
Summary of the invention
The present invention proposes a kind of plunger pump of high-pressure airless sprayer, the invention solves the problems that Technical problem is how to propose the plunger pump of high-pressure airless sprayer of another kind of structure.
Solving the technical problem that of the present invention can be realized by following technical proposal:
This plunger pump of high-pressure airless sprayer includes the pump housing, decelerator and motor, in the pump housing There is feeding-passage and tapping channel that plunger cavity is connected with plunger cavity, feeding-passage Upper connection has the inlet connector of one-way flow, and tapping channel connects going out of one-way flow Material joint;Being provided with piston in plunger cavity, reducer shell is fixing with the pump housing and motor to be connected, Reducer input shaft is connected with electric machine main shaft, and reducer output shaft is fixed with swash plate, lives It is arranged with the first spring making piston and swash plate lean beyond the Great Wall;Swash plate offsets with piston The face leaned on is obliquely installed relative to reducer output shaft;A balance also it is equipped with in the pump housing Post, balance columns is arranged relative to reducer output shaft centrosymmetry with piston, on balance columns It is arranged with the second spring making balance columns and swash plate lean.
Motor runs through decelerator deceleration and drives swash plate to turn to rotation, balance columns and piston Move back and forth under swash plate top pressure and spring force effect, and the reciprocating motion of piston changes Plunger cavity volume, and then realize the cyclic process of suction and binder.Balance columns and is set Two springs are effectively improved swash plate kinetic stability.Piston is axially in parallel with electric machine main shaft, The advantage with compact conformation.It is rapid that coating pumped by this plunger displacement pump, and coating supercharging is rapid, Coating supercharging can be made in short time to reach to spray atomizing pressure and to meet spray during spraying operation It is coated with pressure stability so that atomization uniformly reaches optimal atomizing effect.
In above-mentioned plunger pump of high-pressure airless sprayer, described swash plate offsets with piston Against there being thrust bearing on the face leaned on, balance columns and piston lean with thrust bearing, enter And reduce frictional force between balance columns and piston and swash plate, improve kinetic stability and use Life-span.
In above-mentioned plunger pump of high-pressure airless sprayer, described decelerator is planetary reduction gear Device, planetary gear uses POM injection mo(u)lding, thus has compact and lightweight, The advantage such as in transmission process noise is extremely low.
In above-mentioned plunger pump of high-pressure airless sprayer, the described pump housing is provided with for supervising Measure the pressure switch of the discharging cavity pressure of material joint.
In above-mentioned plunger pump of high-pressure airless sprayer, the described pump housing is provided with for releasing Release the relief valve of the discharging cavity pressure of material joint.
In above-mentioned plunger pump of high-pressure airless sprayer, the described pump housing is fixed with knob Shell, knob shell inner position have a rotation axis, two ends respectively with rotation axis cam part The first push rod of leaning with pressure switch and two ends respectively with rotation axis cam part with The second push rod that the valve rod of relief valve is connected.
Compared with prior art, this plunger pump of high-pressure airless sprayer have compact conformation, Kinetic stability is high, easy to operate and the advantage such as safety, length in service life.
Accompanying drawing explanation
Fig. 1 is the explosive view of this plunger pump of high-pressure airless sprayer.
Fig. 2 is the perspective view of this plunger pump of high-pressure airless sprayer.
Fig. 3 is the sectional structure schematic diagram of this plunger pump of high-pressure airless sprayer.
Fig. 4 is the plan structure schematic diagram of this plunger pump of high-pressure airless sprayer.
Fig. 5 is the sectional structure schematic diagram of A-A in Fig. 3.
Fig. 6 is the vertical of the parts such as motor and decelerator in this plunger pump of high-pressure airless sprayer Body structural representation.
Fig. 7 is the pressure adjusting structure signal of relief valve in this plunger pump of high-pressure airless sprayer Figure.
In figure, 1, the pump housing;1a, feeding-passage;1b, tapping channel;2, decelerator; 2a, reducer output shaft;3, motor;4, inlet connector;5, discharging joint;6、 Piston;7, pressure switch;7a, pressure valve;7a1, valve body;7a2, valve rod;7a3、 Valve seat;7a4, compression spring;7a5, sealing ring;7b, microswitch;7c, extension spring; 7d, trimming bolt;8, oil sealing;9, linear bearing;10, bearing;11, swash plate; 12, the first spring;13, balance columns;14, the second spring;15, thrust bearing;16、 Knob shell;17, the first push rod;18, relief valve;19, connecting rod;20, rotation axis; 21, the second push rod.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, the technical side to the present invention Case is further described, but the present invention is not limited to these embodiments.
As shown in Figures 1 to 7, this plunger pump of high-pressure airless sprayer include the pump housing 1, Decelerator 2 and motor 3.
There is in the pump housing 1 feeding-passage 1a and discharging that plunger cavity is connected with plunger cavity Passage 1b, feeding-passage 1a connects and has the inlet connector 4 of one-way flow, tapping channel 1b is upper connects the discharging joint 5 having one-way flow.
It is provided with piston 6 in plunger cavity, between piston 6 and the pump housing 1, is provided with oil sealing 8 and straight Bobbin holds 9, it is ensured that sealing and kinetic stability.When this plunger displacement pump runs, piston 6 Axial reciprocating, plunger cavity volume back and forth changes, and when volume increases, plunger cavity produces negative pressure, Discharging joint 5 is automatically closed, and inlet connector 4 is automatically in unlatching shape State, the medium such as coating or paint enters in plunger cavity.When volume-diminished, plunger cavity produces Malleation, discharging joint 5 is automatically in opening, and inlet connector 4 is automatically in Closed mode, medium is sprayed by discharging joint 5.
Decelerator 2 is planetary reduction gear, and planetary gear uses POM injection mo(u)lding.Decelerator 2 housings are fixing with the housing of the pump housing 1 and motor 3 to be connected.The sun gear of planetary reduction gear Being fixed on motor 3 main shaft, reducer output shaft 2a penetrates the pump housing 1 and sets between the two Having bearing 10, this structure had both made more compact structure, improve again plunger displacement pump intensity and Stability.
It is fixed with swash plate 11 on reducer output shaft 2a, piston 6 is arranged with and makes piston 6 The first spring 12 leant with swash plate 11;The face leant with piston 6 in swash plate 11 It is obliquely installed relative to reducer output shaft 2a;A balance columns also it is equipped with in the pump housing 1 13, balance columns 13 is arranged relative to reducer output shaft 2a centrosymmetry with piston 6, The second spring 14 making balance columns 13 and swash plate 11 lean it is arranged with on balance columns 13. Against there being thrust bearing 15 on the face leant with piston 6 in swash plate 11, balance columns 13 All lean with thrust bearing 15 with piston 6.Motor 3 drives swash plate 11 to rotate a circle, Piston 6 moves back and forth once.
The pump housing 1 is provided with the pressure switch of the discharging cavity pressure for monitoring discharging joint 5 7.Pressure switch 7 and motor 3 all with control circuit electric connection, according to pressure switch 7 Signal control motor 3 rotating speed of feedback, and then ensure coating pressure and the setting ejected State corresponding and ensure plunger displacement pump safety.
Pressure switch 7 includes pressure valve 7a and microswitch 7b, the one of microswitch 7b End is hinged with the pump housing 1, also by extension spring 7c phase between microswitch 7b with the pump housing 1 Even.
Pressure valve 7a includes valve body 7a1, valve rod 7a2, has the valve seat 7a3 of pressure tap, Valve rod 7a2 is provided with pressure bullet in valve body 7a1 and between valve rod 7a2 and valve body 7a1 Spring 7a4, one end of valve rod 7a2 penetrates in pressure tap and is arranged with sealing ring 7a5;Valve rod One end of 7a2 passes the pump housing 1 and can lean with the triggering sheet of microswitch 7b;Valve body 7a1 Fix with the pump housing 1 and be connected and valve seat 7a3 is pressed in the pump housing 1.When discharging joint 5 When discharging cavity pressure raises, sealing ring 7a5 and valve rod 7a2 is promoted to be displaced outwardly and compress Compression spring 7a4, when pressure reaches certain value, valve rod 7a2 and microswitch 7b touches Send out sheet lean and then trigger microswitch 7b, this force value it is believed that coating injection pressure Power setting value.After the discharging cavity pressure of discharging joint 5 declines, compression spring 7a4 pushes away Rotary packing ring 7a5 and valve rod 7a2 moves inward, and valve rod 7a2 touches with microswitch 7b Send out sheet to depart from.
Being fixed with knob shell 16 on the pump housing 1, knob shell 16 inner position has a rotation axis 20 and first push rod 17 leant with rotation axis 20 cam part, one first top Bar 17 is connected with microswitch 7b.By rotary knob axle 20, change the first push rod 17 The length stretched out, and then change microswitch 7b pendulum angle, i.e. opened by regulation fine motion Close spacing between trigger member and the valve rod 7a2 of pressure valve 7a of 7b, it is achieved adjusting coating The pressure set points of injection.Specifically, microswitch 7b pendulum angle is the biggest, coating The pressure set points of injection is the highest, otherwise the least.In microswitch 7b threaded have with The trimming bolt 7d that first push rod 17 leans, realizes micro-by screwing trimming bolt 7d Adjust the pressure set points of coating injection.
According to practical situation, pressure switch 7 can directly use pressure transducer;Control electricity Road controls motor 3 rotating speed neatly according to corresponding actual pressure value and setup pressure value, It is always ensured that equipment coating spray regime meets setting state and improves the use of plunger displacement pump Life-span.
The pump housing 1 is provided with the relief valve 18 of the discharging cavity pressure for discharging discharging joint 5. After shutting down, the discharging cavity pressure of relief valve 18 removal discharging joint 5 can be handled, enter And just with unload the parts such as spray gun and flexible pipe.One and knob is there is also positioned in knob shell 16 The second push rod 21 that axle 20 cam part leans, the second push rod 21 and relief valve 18 It is connected by connecting rod 19 between valve rod 7a2.By rotary knob axle 20, change push rod The length stretched out, and then pull the valve rod 7a2 of relief valve 18, it is achieved open relief valve 18; In practical structures, the pressure set points of operation knob axle 20 adjusting coating injection and pressure release Direction of rotation is different, and then has easy to operate and have the advantage avoiding maloperation.

Claims (1)

1. a plunger pump of high-pressure airless sprayer, including the pump housing (1), the pump housing (1) Inside there is feeding-passage (1a) and tapping channel (1b) that plunger cavity is connected with plunger cavity; Piston (6) it is provided with in plunger cavity;It is characterized in that, this plunger pump of high-pressure airless sprayer Also include decelerator (2) and motor (3);The upper connection of feeding-passage (1a) has way flow Logical inlet connector (4), has the discharging of one-way flow to connect tapping channel (1b) upper connection Head (5);The housing of decelerator (2) is fixing with the pump housing (1) and motor (3) to be connected, Decelerator (2) power shaft is connected with motor (3) main shaft;Reducer output shaft (2a) On be fixed with swash plate (11), piston (6) is arranged with and makes piston (6) and swash plate (11) The first spring (12) leant;The face leant with piston (6) in swash plate (11) It is obliquely installed relative to reducer output shaft (2a);The pump housing is also equipped with one in (1) Balance columns (13), balance columns (13) and piston (6) are relative to reducer output shaft (2a) Centrosymmetry is arranged, and balance columns (13) is arranged with and makes balance columns (13) and swash plate (11) The second spring (14) leant;The described pump housing (1) is provided with and connects for monitoring discharging The pressure switch (7) of the discharging cavity pressure of head (5);Pressure switch (7) and motor (3) All with control circuit electric connection;Described pressure switch (7) includes pressure valve (7a) and micro- Dynamic switch (7b), one end of microswitch (7b) is hinged with the pump housing (1), fine motion It is connected also by extension spring (7c) between switch (7b) and the pump housing (1);Described pressure valve (7a) include valve body (7a1), valve rod (7a2), there is the valve seat (7a3) of pressure tap, Valve rod (7a2) be positioned at valve body (7a1) and valve rod (7a2) and valve body (7a1) it Between be provided with compression spring (7a4), one end of valve rod (7a2) penetrates in pressure tap and sheathed There is sealing ring (7a5);One end of valve rod (7a2) passes the pump housing (1) and can open with fine motion The triggering sheet closing (7b) leans;Valve body (7a1) and the pump housing (1) be fixing be connected and Valve seat (7a3) is pressed in the pump housing (1).
CN201510188235.2A 2015-04-21 2015-04-21 Plunger pump of high-pressure airless sprayer Expired - Fee Related CN104776004B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201610403515.5A CN106050598A (en) 2015-04-21 2015-04-21 Plunger pump for high-pressure airless spraying machine
CN201510188235.2A CN104776004B (en) 2015-04-21 2015-04-21 Plunger pump of high-pressure airless sprayer
CN201610408894.7A CN106014954B (en) 2015-04-21 2015-04-21 The pressure switch of plunger pump of high-pressure airless sprayer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510188235.2A CN104776004B (en) 2015-04-21 2015-04-21 Plunger pump of high-pressure airless sprayer

Related Child Applications (2)

Application Number Title Priority Date Filing Date
CN201610408894.7A Division CN106014954B (en) 2015-04-21 2015-04-21 The pressure switch of plunger pump of high-pressure airless sprayer
CN201610403515.5A Division CN106050598A (en) 2015-04-21 2015-04-21 Plunger pump for high-pressure airless spraying machine

Publications (2)

Publication Number Publication Date
CN104776004A CN104776004A (en) 2015-07-15
CN104776004B true CN104776004B (en) 2016-08-24

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ID=53617694

Family Applications (3)

Application Number Title Priority Date Filing Date
CN201510188235.2A Expired - Fee Related CN104776004B (en) 2015-04-21 2015-04-21 Plunger pump of high-pressure airless sprayer
CN201610403515.5A Pending CN106050598A (en) 2015-04-21 2015-04-21 Plunger pump for high-pressure airless spraying machine
CN201610408894.7A Expired - Fee Related CN106014954B (en) 2015-04-21 2015-04-21 The pressure switch of plunger pump of high-pressure airless sprayer

Family Applications After (2)

Application Number Title Priority Date Filing Date
CN201610403515.5A Pending CN106050598A (en) 2015-04-21 2015-04-21 Plunger pump for high-pressure airless spraying machine
CN201610408894.7A Expired - Fee Related CN106014954B (en) 2015-04-21 2015-04-21 The pressure switch of plunger pump of high-pressure airless sprayer

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Publication number Priority date Publication date Assignee Title
CN108057533B (en) * 2017-12-21 2020-01-10 宁波李氏实业有限公司 High-pressure diaphragm spraying machine
CN110523557B (en) * 2019-08-19 2022-03-08 金华研创科技有限公司 Efficient handheld spray gun and spraying method
CN110693701A (en) * 2019-11-21 2020-01-17 张明 Ear massage nursing device with magnetic therapy effect
DE102021104570A1 (en) 2021-02-25 2022-08-25 Alfred Kärcher SE & Co. KG DRIVE DEVICE FOR A HIGH-PRESSURE CLEANING DEVICE
CN114887791B (en) * 2022-05-20 2023-05-23 浙江普莱得电器股份有限公司 Durable high-pressure airless spraying machine
CN117404270B (en) * 2023-10-26 2024-05-14 浙江荣鹏气动工具股份有限公司 Portable electronic control pressure regulating and pressure releasing structure on spraying machine

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DE102005009311A1 (en) * 2005-02-21 2006-08-24 Alfred Kärcher Gmbh & Co. Kg High-pressure cleaner
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CN203617213U (en) * 2013-12-02 2014-05-28 南阳防爆电气研究所有限公司 Explosion-proof pressure switch capable of limiting spark energy
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Publication number Publication date
CN106050598A (en) 2016-10-26
CN106014954B (en) 2017-08-25
CN106014954A (en) 2016-10-12
CN104776004A (en) 2015-07-15

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