WO2012129986A1 - 柱塞泵 - Google Patents
柱塞泵 Download PDFInfo
- Publication number
- WO2012129986A1 WO2012129986A1 PCT/CN2012/070961 CN2012070961W WO2012129986A1 WO 2012129986 A1 WO2012129986 A1 WO 2012129986A1 CN 2012070961 W CN2012070961 W CN 2012070961W WO 2012129986 A1 WO2012129986 A1 WO 2012129986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- plunger
- plunger pump
- pump according
- eccentric shaft
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/02—Lubricating-pumps with reciprocating piston
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- 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
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
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- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
Definitions
- the present invention relates to the field of lubrication pumps and, in particular, to a plunger pump. Background technique
- the plunger pump mainly includes a pump unit for sucking oil pressure, an oil storage barrel for storing oil, and an eccentric shaft for driving the pump unit, wherein the plunger pump works by driving the plunger through the eccentric shaft,
- the plunger is reciprocated linearly to achieve the oil suction and oil pressure work.
- the integrated pump unit is usually used in the industry, the spring-type plunger reciprocating motion and the eccentric shaft drive the oil pan in the oil storage barrel through the pin or key connection, etc., resulting in complicated structure of the plunger pump. It is inconvenient to process, and it is prone to failure, and it is extremely inconvenient to disassemble and repair. Summary of the invention
- An object of the present invention is to provide a plunger pump which is simple in structure, low in failure rate and convenient in maintenance.
- the present invention provides a plunger pump including an eccentric shaft, a pump unit, and an oil storage tub mounted above the pump unit, the eccentric shaft being connected to the reservoir through the pump unit
- An oil drum the pump unit includes an oil suction pressure portion and an oil discharge portion detachably coupled together, the eccentric shaft for driving the oil suction pressure portion to pump grease from the oil storage tank, and Grease is supplied through the oil discharge portion.
- the oil absorption oil portion has an oil suction port, an oil chamber and an oil outlet that communicate with each other, and the oil discharge portion has an oil outlet passage, and the oil outlet port communicates with the oil outlet passage.
- the oil suction pressure portion includes a plunger and a one-way valve spool, and the plunger is axially Movably disposed on one side of the oil chamber, the one-way valve spool is axially displaceably disposed on the other side of the oil chamber, and the eccentric shaft drives the plunger to move axially.
- an outer side of the one-way valve spool is provided with a plug, and a return spring is disposed between the one-way valve spool and the plug.
- the oil suction pressure portion has a drain port located between the check valve spool and the plug and communicates with an oil outlet passage on the oil discharge portion.
- the plunger pump further includes a slider, the plunger is connected to the slider, and the eccentric shaft contacts the slider and drives the slider to reciprocate linearly.
- the slider is formed as a square frame having a card slot, and a head of the plunger is engaged in the card slot.
- the eccentric shaft is located inside the square frame, and a side of the square frame is provided with a guide block.
- the opposite sides of the square frame are respectively connected with the plunger, and the other opposite sides of the square frame are respectively provided with the guiding block.
- one of the opposite sides of the square frame is connected with the plunger, and the other opposite sides of the square frame are respectively provided with the guide block.
- the oil storage tub includes a oil pan and a bushing connected to the oil pan, the bushing has a profiled hole, and an upper end of the eccentric shaft is inserted into the profiled hole in a form fit manner.
- the oil storage barrel includes a oil pan and a sleeve connected to the oil pan, the sleeve has a special-shaped hole, and an upper end of the eccentric shaft and a lower end of the special-shaped rod are drivingly connected through a gear mechanism, the irregular shape The upper end of the rod is positively inserted into the shaped hole.
- the oil storage tub is detachably mounted on the pump unit.
- a mounting hole is provided at a bottom end of the oil storage tub, and the bushing is mounted in the mounting hole through a bearing.
- the oil pan is detachably coupled to the sleeve by a second fastener.
- the plunger pump further includes an oil discharge device, and the oil discharge device includes a pump unit a total oil outlet passage and a fuel pipe connected to the total oil outlet passage, the oil discharge device further comprising a bolt, the bolt has an axial through hole and a radial through hole communicating with each other, and one end of the oil pipe has a oil pipe a joint, the bolt is screwed into the total oil outlet passage through the oil pipe joint, and the axial through hole communicates with the total oil discharge passage, and the radial through hole communicates with the oil pipe.
- the oil pipe joint is formed into a tubular shape having an inner hole, and the side wall has a side opening communicating with the oil pipe, the bolt passing through the inner hole and the radial through hole and the side opening Connected.
- the oil pipe joint is detachably connected to the oil pipe or formed as a unitary structure.
- the bolt has two radial through holes perpendicular to each other to selectively communicate with the side opening.
- a gasket is provided between the oil pipe joint and the head of the bolt and/or between the oil pipe joint and the pump unit.
- the plunger pump provided by the present invention has a simple structure, a low failure rate, and is easy to maintain.
- Other features and advantages of the present invention will be described in detail in the following detailed description.
- FIG. 1 is a schematic cross-sectional view showing a partial structure of a pump unit provided by the present invention
- FIG. 2 is a top plan view of an embodiment of a plunger pump provided by the present invention (an oil storage tank is not shown);
- FIG 4 is a top plan view of another embodiment of a plunger pump provided by the present invention (not shown) Oil storage tank)
- Figure 5 is a partial cross-sectional view of the plunger pump of Figure 4.
- Figure 6 is a partial schematic view of the oil discharge device provided by the present invention.
- Figure 7 is a cross-sectional view of the bolt of Figure 6;
- Figure 8 is a cross-sectional view of the oil pipe joint of Figure 6. detailed description
- the plunger pump mainly includes a pump unit and an oil storage barrel mounted on the pump unit.
- the eccentric shaft driven by a driving device such as a motor passes through the pump unit and extends to the oil storage barrel, and the eccentric shaft is used for
- the plunger in the pump unit is driven to reciprocate linearly, pumping grease (lubricating oil or grease) from the oil storage tank, pumping the pumped grease out, and supplying it to the desired lubrication point through a device such as a tubing.
- the plunger pump mainly includes an eccentric shaft 3, a pump unit 1 and an oil storage tub 2 mounted above the pump unit 1, and the eccentric shaft 3 is connected to the pump unit 1 through the pump unit 1.
- the oil storage tank 2 includes the oil suction pressure oil portion 11 and the oil discharge portion 12 detachably coupled together, and the eccentric shaft 3 is for driving the oil absorption oil pressure portion 11 from the oil storage portion
- the barrel 2 sucks grease and supplies the grease through the oil discharge portion 12.
- the oil suction pressure portion 11 can be detachably attached to the oil discharge portion 12 by a fastener such as a bolt.
- the pump unit usually includes a pump body, and the pump body is provided with a plunger, a check valve, an oil suction port, an oil chamber, an oil outlet, each oil passage, etc.
- the structure is very complicated and the processing is not Convenience.
- the pump unit 1 by configuring the pump unit 1 into two parts, the oil suction pressure portion 11 and the oil discharge portion 12, the structure is simple, the processing is convenient, and the disassembly and maintenance is also very convenient.
- the oil suction pressure oil portion 11 may have an oil suction port a, an oil chamber b, and an oil outlet port c that communicate with each other, and the oil discharge portion 12 has an oil outlet passage e, and an oil outlet port c and an oil outlet passage e It is connected so that the grease sucked from the oil storage tub 2 can be sent out through the oil discharge passage e.
- the oil suction pressure portion 11 includes a plunger 13 and a check valve spool 14, and in order to satisfy the reciprocating motion of the plunger 13, the plunger 13 is axially displaceably disposed on one side of the oil chamber b, and a one-way valve
- the core 14 is also axially displaceably disposed on the other side of the oil chamber b, and the plunger 13 and the check valve spool 14 cooperate to complete the oil absorption and oil pressure work.
- a plugging 17 is disposed on the outer side of the check valve spool 14.
- the type of the plugging 17 is preferably a plugging wire or other sealing member having a sealing effect to ensure that the grease does not leak, and the plugging 17 can also be used as a spring.
- the seat is provided with a return spring 19 between the check valve spool 14 and the plug 17 and the return spring 19 is biased on the check valve spool 14 to maintain the reciprocating motion of the check valve spool 14.
- the plunger 13 is driven by the eccentric shaft 3 to reciprocate.
- the check valve spool 14 also moves to the left under the action of the return spring 19, and closes the oil outlet. c, the plunger 13 continues to move to the left, thereby forming a vacuum negative pressure in the oil chamber b.
- the plunger 13 When the plunger 13 is moved to the right to the stroke end, the right end of the plunger 13 will contact the left end of the check valve spool 14, at which time, in order to ensure oil supply efficiency, operational reliability, and durability of the components, the plunger 13
- the end face of the right end and the end face of the left end of the check valve spool 14 are substantially flat, so that the two can achieve zero gap contact, and ensure that all the oil sucked in the oil chamber b is pressed out.
- the oil outlet c is effectively closed and the oil suction port a is fully opened during oil suction, and conversely, when oil is pressed
- the oil suction port a is effectively closed and the oil outlet port c is fully opened, so that the working reliability and stability of the oil suction pressure oil can be effectively ensured.
- the check valve spool 14 can be smoothly In the axial movement, the oil suction pressure portion 11 is further provided with a drain port d, which is located between the check valve spool 14 and the plug 19 and communicates with the oil outlet passage e on the oil discharge portion 12. .
- the pump unit for the plunger pump provided by the invention has the advantages of simple structure, high-efficiency work of sucking oil pressure and oil discharge, non-interference between the oil suction pressure oil portion and the oil discharge portion, low failure rate, and convenient disassembly and assembly .
- the plunger pump provided by the present invention further includes a slider 15 connected to the slider 15, the eccentric shaft 3 is in contact with the slider 15 and drives the slider 15 to reciprocate linearly.
- the plunger 13 is normally reset by a spring, i.e., a reciprocating linear movement is achieved by the interaction of the eccentric shaft and the spring.
- the spring can easily fail or become stuck during long-term use, resulting in the plunger pump not working properly.
- the plunger 13 is coupled to the slider 15 by a suitable means, so that during the reciprocating linear movement of the eccentric shaft 3 to drive the slider 15, the plunger 13 can be driven to move at the same time without any spring. Therefore, any problems caused by the use of the spring are completely solved.
- the plunger 13 can be attached to the slider 15 by any suitable means, such as by fastener attachment, bonding, snapping, riveting, and the like.
- the slider 15 is formed as a square frame having a card slot 16 in which the head 131 of the plunger 13 is engaged. This structure is very simple and reliable, and the detachment between the plunger 13 and the slider 15 is also very convenient.
- the eccentric shaft 3 may be located inside the square frame, and may also have a guiding block 18 on the side of the square frame.
- the eccentric shaft 3 rotates inside the square frame to drive the square frame to move, because the sides of the square frame respectively have the guide blocks 18, so that the square frame can be restricted from reciprocating in the linear direction, the structure is very simple, and the operation is reliable.
- the guide block 18 provided by the present invention has one or more grooves on the inner side surface thereof, and the outer side surface of the square frame of the slider 15 corresponding thereto has one or more protrusions for use, by setting, Allowing the slider 15 to be erected by the guide block 18, thereby making the slider 15 It is possible to reciprocate under the guidance of the guide block 18 and does not contact other components, reducing unnecessary wear.
- the present invention is not limited to such a connection manner, and other connection manners known to those skilled in the art may be used, and details are not described herein again.
- the plungers 13 are respectively connected to opposite sides of the square frame, and the guide blocks are respectively disposed on opposite sides of the square frame. 18. Gp, in the direction shown in FIG. 2, a plunger 13 is respectively connected to the left and right sides of the square frame, and a guide block 18 is respectively disposed on the upper and lower sides of the square frame, and the pair of upper and lower guide blocks 18 are used.
- the square frame is restricted from moving linearly in the left-right direction.
- the plucking shaft 13 and the slider 15 drive the plunger 13 to reciprocate linearly in the oil suction pressure portion 11 of the pump unit 1, thereby being stored from the pump unit 1 through the oil suction port a.
- the oil drum 2 (see Figure 3) pumps oil and then supplies it to the desired lubrication point.
- a plurality of fixing holes 9 may be provided in the oil absorbing portion 11 and the guide block 18 so that it can be easily fixed to the oil discharge portion 12 by fasteners such as bolts.
- the oil absorbing portion 11, the guide block 18 and the slider 15 are each a separate module and are mounted to the oil discharge portion 12, so that the overall structure is simple, the processing is convenient, and the assembly and maintenance are also very simple.
- an oil suction pressure portion 11 including a plunger 13 is provided on the left and right sides of the square frame, and the oil sucked by the two oil suction portions 11 passes through the respective oil discharge portions of the oil discharge portion 12.
- the passage e (see Fig. 1) is pumped out, and the two oil outlet passages e corresponding to the two oil suction pressure portions 11 can be collected in the oil discharge portion 12, and then passed through the total oil outlet passage 5 and the oil pipe 7 connected thereto ( See Figure 6) for delivery.
- the suction pressure oils of the above two plungers 13 are alternately arranged, so that by providing the two oil suction pressure portions 11, it is ensured that the grease is continuously supplied outward through the total oil outlet passage 5.
- FIG. 4 is a top plan view of another embodiment of the plunger pump provided by the present invention.
- FIG. 5 is a partial cross-sectional view of the plunger pump of FIG.
- the difference from the above embodiment is mainly that the plunger 13 is connected only to one of the opposite sides of the square frame, instead of being disposed on both sides. Plunger 13.
- the other structure in this embodiment is basically the same as the above embodiment.
- the plungers 13 are connected to one of the opposite sides of the square frame, and the guide blocks 18 are respectively disposed on the other opposite sides of the square frame.
- Gp in the direction shown in FIG. 4, only one plunger 13 is connected to the left side of the square frame, and guide blocks 18 are respectively provided on the upper and lower sides of the square frame, and a pair of upper and lower guide blocks 18 are used for
- the square frame is restricted to reciprocate linearly only in the left and right direction.
- the plunger 13 is provided only on one side of the square frame, the positional relationship between the respective components can be appropriately adjusted, for example, the square frame and the eccentric shaft are offset to one side with respect to the center of the plunger pump.
- the specification can be designed to be smaller according to user requirements.
- the embodiment with two plungers 13 as shown in Figure 2 can be applied to a high flow plunger pump, while the embodiment with only one plunger 13 as shown in Figure 4 can be applied to a small flow column
- the pump is plugged so that the plunger pump provided by the present invention can reduce the size of the plunger pump and reduce the cost according to working conditions, so as to provide users with various options.
- the present invention does not limit the number of plungers, and those skilled in the art can change the number of plungers according to the flow rate of the plunger pump or the like within the scope of the present invention.
- a plunger 13 is respectively connected to the left and right sides of the square frame, but those skilled in the art can easily understand that they can also be connected on the left and right sides of the square frame.
- a person skilled in the art can also choose to provide a plunger 13 or a plurality of plungers 13 on one side of the square frame as needed.
- those skilled in the art can conceive that the provision of a plurality of plungers 13 as described herein requires correspondingly increasing the oil suction pressure portion that cooperates with the increased plunger to complete the suction and oil pressure operation of the plunger pump.
- the oil sump 2 is usually provided with a stirring oil pan 21 to stir the grease, for example, to be attached to the oil storage tank. 2 The grease on the inner wall is scraped off and bubbles in the grease are removed.
- the oil storage tub 2 further has a sleeve 22 connected to the oil swash plate 21, the sleeve 22 has a profiled aperture 221 which, for ease of disassembly, is preferably connected using a second fastener 24 (e.g., a screw or the like).
- a second fastener 24 e.g., a screw or the like.
- the eccentric portion of the eccentric shaft 3 (such as an eccentric) drives the pump unit 1 to operate, and the upper end 31 of the eccentric shaft 3 is positively inserted into the shaped hole 221, that is, the upper end 31 of the eccentric shaft is also shaped the same as the shaped hole 221 Structure.
- the "shaped" in the shaped hole 221 and the following shaped rod 81 and the like which are referred to this time are members which are non-circular in cross section, that is, between the non-circular structures.
- the profile connection cooperates to achieve torque transfer of the relevant components.
- the outer hole 221 and the upper end 31 of the eccentric shaft are preferably square in shape, and a triangular or other structure having a non-circular cross section may also be employed. With this configuration, the torque transmission between the eccentric shaft 3 and the sleeve 22 can be realized to drive the oil pan 21 to rotate, and the eccentric shaft 3 and the sleeve 22 can be easily disassembled.
- the eccentric shaft 3 when the present invention adopts the embodiment shown in FIG. 4, in order to save internal space and ensure the normal operation of the plunger 13, the eccentric shaft 3 can be biased, that is, the eccentric shaft 3 is not disposed on the plunger pump. Central location. Therefore, in order to realize the purpose that the eccentric shaft 3 drives the rotation of the sleeve 22 disposed at the center, thereby driving the oil pan 21 to rotate, the present invention can provide a gear mechanism 8 between the eccentric shaft 3 and the sleeve 22 (for example, including two mutual The meshing gear) transmits the rotational force of the eccentric shaft 3 to the oil pan 21 .
- a gear mechanism 8 between the eccentric shaft 3 and the sleeve 22 for example, including two mutual The meshing gear
- one of the two intermeshing gears is connected to the eccentric shaft 3, the other is connected to the special-shaped rod 81, the special-shaped rod 81 is engaged with the special-shaped hole 221, and the sleeve 22 is driven to rotate, and the eccentric shaft 3 can also be realized.
- the torque transmission between the sleeves 22 makes it easy to disassemble between the eccentric shaft 3 and the sleeve 22.
- the gear mechanism 8 herein is a structure known to those skilled in the art, and will not be further described herein.
- the bushing 22 can transmit the rotational force of the eccentric shaft 3 to the oil pan 21 by the special-shaped fit to drive the oil pan 21 to stir the grease. If maintenance or maintenance is required, the eccentric shaft 3 can be directly pulled out from the sleeve 22, which is very convenient for disassembly and assembly.
- the oil storage tub 2 may be attached to the pump unit 1 (specifically, to the oil discharge portion 12 of the pump unit 1) by a first fastener 121 such as a bolt. Further, in order to mount the boss 22 at the bottom end of the oil storage tub 2, the bottom end of the oil storage tub 2 has a mounting hole in which a bearing 23 is fitted, and the bushing 22 is cooperatively inserted into the inner ring of the bearing 23. The eccentric shaft 3 and the sleeve 22 can be inserted and removed immediately for easy disassembly.
- the plunger pump provided by the present invention further includes an oil discharge device including a total oil discharge passage 5 formed on the pump unit 1 in order to smoothly feed the grease out. (communicating with the oil outlet passage e shown in Fig. 1) and the oil pipe 6 connected to the total oil outlet passage 5, the oil discharge device further comprising a bolt 4 having axial through holes 41 communicating with each other And a radial through hole 42 having one end of the oil pipe 6 having a fuel pipe joint 7 through which the bolt 4 is screwed into the total oil outlet passage 5, the axial through hole 41 and the The total oil outlet passage 5 is in communication, and the radial through hole 42 is in communication with the oil pipe 6.
- the bolt 4 has an external thread, and the total oil outlet passage 5 has an internal thread. By screwing, the bolt 4 can be screwed into the total oil outlet passage 5 through the oil pipe joint 7, so that it can be very conveniently
- the oil pipe 6 is connected to the total oil discharge passage 5.
- the bolt 4 has an axial through hole 41 and a radial through hole 42.
- the total oil outlet passage 5 communicates with the axial through hole 41 of the bolt 4, so that the grease therein can flow into the oil pipe through the axial through hole 41 and the radial through hole 42.
- the oil pipe joint 7 is generally formed into a tubular shape having an inner hole 71, and a side opening 72 communicating with the oil pipe 6 is formed on the pipe wall.
- the bolt 4 passes through the inner hole 71 of the oil pipe joint 7, and the radial through hole 42 of the bolt 4 communicates with the side opening 72 of the oil pipe joint 7, so that the radial through hole 42 can be ensured to communicate with the oil pipe 6.
- the oil pipe joint 7 can usually be formed integrally with the oil pipe 6, but it can also be firmly connected together by suitable means, for example, detachably connected together.
- the bolt 4 preferably has two radial through holes 42 which are mutually intersected in a zigzag shape. Therefore, at the time of installation, any one of the four open ends of the two radial through holes 42 can be selected to communicate with the side opening 72 on the oil pipe joint 7, so that the installation is very convenient, and the oil pipe 6 is allowed to have a plurality of different installations. Angle, flexible installation.
- seal gasket may be provided between the pipe joint 7 and the pump unit 1 to prevent grease from leaking from the joint, and in addition to the gasket, other seals known in the art are suitable for use in the present invention. This is not a limitation.
- the invention fully utilizes the modular design idea, so that the entire plunger pump has a simple structure, is convenient to disassemble and maintain, and is stable and reliable in operation.
- the present invention has at least the following features as compared with the prior art:
- the pump unit 1 adopts a split design, including an oil absorbing oil portion 11 and an oil discharging portion 12 which are detachably coupled to each other. Therefore, each part has a simple structure and is easy to process, and the disassembly and maintenance between the two is also very convenient. .
- the working reliability and working efficiency of the oil suction and oil pressure process are ensured. Further, by the zero clearance fit between the end face of the plunger 13 and the end face of the check valve spool 14 (at the end of the pressure oil process), the working durability can be improved and the pressure oil efficiency can be improved.
- the eccentric shaft 3 drives the plunger 13 to reciprocate linearly through the slider 15, and the plunger 13 no longer needs a spring to reset, thereby completely solving all problems caused by the use of the spring reset, such as spring failure, jamming, etc.
- the plunger pump is not working properly.
- the eccentric shaft 3 and the bushing 22 on the oil storage tank 2 are connected by a plug-in type, so that it is very convenient to disassemble.
- the sleeve 22 and the oil pan 21 may also be connected by a second fastener 24 such as a bolt or a screw.
- the oil tank 3 and the pump unit 1 (specifically, the oil portion 12 of the pump unit) may also be connected.
- the first fasteners 121 such as bolts are connected, so that the overall structure is easy to disassemble and maintain.
- the oil pipe 6 and the total oil outlet passage 5 are connected by a unique bolt 4 having an axial through hole 41 and a radial through hole 42 and a oil pipe joint 7, so that the structure is simple and the connection is convenient, and the oil pipe 6 can also be selected. Different installation angles, so the installation is flexible.
- some accessory devices of the plunger pump such as a pressure gauge, a filter, an explosion-proof valve, a pressure sensor, etc.
- a pressure gauge a pressure gauge
- a filter a filter
- an explosion-proof valve a pressure sensor
- the plunger pump not only has a simple overall structure, but also has a beautiful appearance, and is also very convenient to use and maintain.
- the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings.
- the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.
- the shape of the slider, the plunger, the check valve spool and the plug as well as the various ways of connecting, fastening and sealing.
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- Reciprocating Pumps (AREA)
Description
柱塞泵
技术领域
本发明涉及润滑泵领域, 具体地, 涉及一种柱塞泵。 背景技术
目前, 用于润滑***的柱塞泵使用广泛。 通常地, 柱塞泵主要包括用 于吸油压油的泵单元、 用于储油的储油桶以及用于驱动泵单元的偏心轴, 其中柱塞泵的工作原理为通过偏心轴驱动柱塞, 使柱塞往复直线运动从而 来实现吸油压油工作。 在结构上, 目前业界内通常采用一体式的泵单元, 弹簧式的柱塞往复运动以及偏心轴通过销或键的连接驱动储油桶内的搅油 盘等等, 造成柱塞泵的结构复杂、 加工不方便, 且易发生故障、 且拆卸维 修也极不方便。 发明内容
本发明的目的是提供一种柱塞泵, 该柱塞泵结构简单, 故障率低且维 修方便。
为了实现上述目的, 本发明提供一种柱塞泵, 该柱塞泵包括偏心轴、 泵单元和安装在泵单元上方的储油桶, 所述偏心轴穿过所述泵单元连接到 所述储油桶, 所述泵单元包括可拆卸地连接在一起的吸油压油部分和出油 部分, 所述偏心轴用于驱动所述吸油压油部分从所述储油桶内泵吸油脂, 并将油脂通过所述出油部分供出。
优选地, 所述吸油压油部分具有相互连通的吸油口、 油腔和出油口, 所述出油部分具有出油通道, 所述出油口与所述出油通道连通。
优选地, 所述吸油压油部分包括柱塞和单向阀阀芯, 所述柱塞可轴向
移动地设置在所述油腔的一侧, 所述单向阀阀芯可轴向移动地设置在所述 油腔的另一侧, 所述偏心轴驱动所述柱塞轴向移动。
优选地, 所述单向阀阀芯的外侧设置有封堵, 并且所述单向阀阀芯与 所述封堵之间设置有复位弹簧。
优选地, 所述吸油压油部分具有泄油口, 该泄油口位于所述单向阀阀 芯与所述封堵之间, 且与所述出油部分上的出油通道连通。
优选地, 所述柱塞泵还包括滑块, 所述柱塞连接到所述滑块, 所述偏 心轴与所述滑块接触并带动所述滑块往复直线移动。
优选地, 所述滑块形成为方形框架, 该方形框架上具有卡槽, 所述柱 塞的头部接合在所述卡槽内。
优选地, 所述偏心轴位于所述方形框架的内部, 并且所述方形框架的 侧面设置有导向块。
优选地, 所述方形框架的相对的两侧分别连接有所述柱塞, 所述方形 框架的另外相对的两侧分别设置有所述导向块。
优选地, 所述方形框架的相对的两侧中的一侧连接有所述柱塞, 所述 方形框架的另外相对的两侧分别设置有所述导向块。
优选地, 所述储油桶包括搅油盘和与该搅油盘相连的轴套, 该轴套具 有异形孔, 所述偏心轴的上端形状配合地***到所述异形孔内。
优选地, 所述储油桶包括搅油盘和与该搅油盘相连的轴套, 该轴套具 有异形孔, 所述偏心轴的上端与异形杆的下端通过齿轮机构传动连接, 所 述异形杆的上端形状配合地***到所述异形孔内。
优选地, 所述储油桶可拆卸地安装在所述泵单元上。
优选地, 在所述储油桶的底端具有安装孔, 所述轴套通过轴承安装在 所述安装孔内。
优选地, 所述搅油盘通过第二紧固件可拆卸地连接到所述轴套上。 优选地, 所述柱塞泵还包括出油装置, 该出油装置包括形成于泵单元
上的总出油通道以及与该总出油通道相连的油管, 所述出油装置还包括螺 栓, 所述螺栓具有相互连通的轴向通孔和径向通孔, 所述油管的一端具有 油管接头, 所述螺栓穿过所述油管接头拧固到所述总出油通道内, 所述轴 向通孔与所述总出油通道连通, 所述径向通孔与所述油管连通。
优选地, 所述油管接头形成为具有内孔的管状, 且侧壁上具有与所述 油管连通的侧开口, 所述螺栓穿过所述内孔且所述径向通孔与所述侧开口 连通。
优选地, 所述油管接头与所述油管可拆卸地连接或者形成为一体结构。 优选地, 所述螺栓具有相互垂直的两个径向通孔以选择性地与所述侧 开□连通。
优选地, 在所述油管接头与所述螺栓的头部之间和 /或在所述油管接头 与所述泵单元之间具有密封垫片。
通过上述技术方案, 本发明提供的柱塞泵结构简单, 故障率低且易维 本发明的其他特征和优点将在随后的具体实施方式部分予以详细说 明。 附图说明
附图是用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与下面的具体实施方式一起用于解释本发明, 但并不构成对本发明的限制。 在附图中:
图 1是本发明提供的泵单元的局部结构的剖视示意图;
图 2是本发明提供的柱塞泵的一种实施方式的俯视示意图 (未显示储 油桶);
图 4是本发明提供的柱塞泵的另一种实施方式的俯视示意图 (未显示
储油桶);
图 5是图 4中柱塞泵的局部剖视示意图;
图 6是本发明提供的出油装置的局部示意图;
图 7是图 6中螺栓的剖视图;
图 8是图 6中油管接头的剖视图。 具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是, 此处所描述的具体实施方式仅用于说明和解释本发明, 并不用于限制本发 明。
柱塞泵作为一种润滑泵, 主要包括泵单元和安装在泵单元上的储油桶, 由电机等驱动装置驱动的偏心轴穿过泵单元, 并一直延伸到储油桶, 偏心 轴用于驱动泵单元中的柱塞往复直线运动, 从储油桶中泵吸油脂 (润滑油 或润滑脂),并将泵吸的油脂泵出,并通过油管等装置供送到所需的润滑点。
在本发明中, 如图 1和图 3所示, 柱塞泵主要包括偏心轴 3、 泵单元 1 和安装在泵单元 1上方的储油桶 2,偏心轴 3穿过泵单元 1连接到所述储油 桶 2, 所述泵单元 1包括可拆卸地连接在一起的吸油压油部分 11和出油部 分 12,所述偏心轴 3用于驱动所述吸油压油部分 11从所述储油桶 2内泵吸 油脂, 并将油脂通过所述出油部分 12供出。 吸油压油部分 11通常可以通 过螺栓等紧固件可拆卸地安装到出油部分 12上。
在现有技术中, 泵单元通常都是包括一个泵体, 在泵体中设置有柱塞、 单向阀、 吸油口、 油腔、 出油口、 各个油道等, 结构非常复杂且加工不方 便。 在本发明中, 通过将泵单元 1构造成吸油压油部分 11和出油部分 12 两个部分, 因此结构简单、 加工方便、 且拆装维护也非常方便。
如图 1所示, 吸油压油部分 11可以具有相互连通的吸油口 a、 油腔 b 和出油口 c, 出油部分 12则具有出油通道 e, 并且出油口 c与出油通道 e
连通, 从而可以将从储油桶 2吸入的油脂通过出油通道 e送出。 通常, 吸油压油部分 11包括柱塞 13和单向阀阀芯 14, 为了满足柱塞 13的往复运动, 柱塞 13可轴向移动地设置在油腔 b的一侧, 同时单向阀阀 芯 14也可轴向移动地设置在油腔 b的另一侧, 柱塞 13和单向阀阀芯 14相 互配合, 完成吸油和压油工作。 另外, 在单向阀阀芯 14的外侧设置有封堵 17, 封堵 17的种类优选为具有密封效果的堵丝或其他密封件, 以保证油脂 不外泄, 封堵 17还可用作弹簧座, 以便在单向阀阀芯 14与封堵 17之间设 置复位弹簧 19, 复位弹簧 19偏压在单向阀阀芯 14上, 以维持单向阀阀芯 14的往复运动。
在实际工作中, 柱塞 13受偏心轴 3驱动而实现往复运动, 当柱塞 13 向左运动时, 单向阀阀芯 14在复位弹簧 19的作用下也向左运动, 同时封 闭出油口 c, 柱塞 13继续向左运动, 从而在油腔 b内形成真空负压, 当柱 塞 13向左运动到打开吸油口 a时, 油脂被吸入油腔 b内, 执行吸油过程; 然后, 柱塞 13受偏心轴 3驱动开始向右运动并封闭吸油口 a, 对吸入油腔 b内的油脂施加压力,该压力迫使单向阀阀芯 14克服复位弹簧 19的弹性力 向右运动而打开出油口 C , 然后, 油腔 b内的油脂由出油口 C流入出油部分
12的出油通道 e, 以实现油脂的供出。
当柱塞 13向右运动到行程终端时, 柱塞 13的右端将接触单向阀阀芯 14的左端, 此时, 为了保证供油效率、 工作可靠性以及零部件的耐用性, 柱塞 13右端的端面和单向阀阀芯 14左端的端面均大致为平面, 从而二者 可以实现零间隙接触, 保证将油腔 b 中吸入的油脂全部压出。 另外, 通过 合理设计柱塞 13、 单向阀阀芯 14、 复位弹簧 19以及封堵 17, 使得在吸油 时出油口 c被有效封闭而吸油口 a被充分打开, 相反, 在压油时则吸油口 a 被有效封闭而出油口 c被充分打开, 从而可以有效保证吸油压油的工作可 靠性和稳定性。
为了调节单向阀阀芯 14两端的压力, 使得单向阀阀芯 14能够顺利地
轴向移动, 吸油压油部分 11还设置有泄油口 d, 该泄油口 d位于所述单向 阀阀芯 14与封堵 19之间且与出油部分 12上的出油通道 e连通。
本发明提供的用于柱塞泵的泵单元, 结构简单, 可以高效率的进行吸 油压油和出油的工作, 吸油压油部分和出油部分互不干涉, 故障率低, 且 拆装方便。
此外, 为了更好的实现柱塞 13的往复运动, 如图 2所示, 本发明提供 的柱塞泵还包括滑块 15, 所述柱塞 13连接到所述滑块 15, 所述偏心轴 3 与所述滑块 15接触并带动所述滑块 15往复直线移动。
在现有技术中, 柱塞 13通常都是由弹簧复位, 即通过偏心轴和弹簧的 共同作用来实现往复直线移动。 然而, 弹簧在长期使用过程中很容易失效 或者卡死, 从而导致柱塞泵无法正常工作。
在本发明中, 柱塞 13通过适当的方式连接到滑块 15上, 从而在偏心 轴 3驱动滑块 15往复直线移动的过程中, 就可以带动柱塞 13同时移动而 不再需要任何弹簧, 因此彻底解决了因为使用弹簧而带来的任何问题。
柱塞 13可以通过任何适当的方式连接到滑块 15上, 例如通过紧固件 连接、 粘接、 卡接、 铆接等等。 作为一种优选的实施方式, 如图 2所示, 滑块 15形成为一种方形框架, 该方形框架上具有卡槽 16, 柱塞 13的头部 131接合在所述卡槽 16内。这种结构非常简单且连接可靠, 并且柱塞 13与 滑块 15之间拆卸也非常方便。
另外, 如图 2所示, 所述偏心轴 3则可以位于所述方形框架的内部, 并且在所述方形框架的侧面还可以具有导向块 18。 通过这种结构, 偏心轴 3在方形框架内部转动, 带动方形框架运动, 因为方形框架的侧面分别具有 导向块 18, 因此可以限制方形框架在直线方向上往复移动, 结构非常简单, 并且工作可靠。 其中, 本发明提供的导向块 18的内侧面上具有一个或多个 凹槽, 而与之对应的滑块 15的方形框架的外侧面具有相使用的一个或多个 凸起, 通过这样设置, 使得滑块 15能够被导向块 18架起, 从而使滑块 15
能够在导向块 18的导向下往复运动, 并且不接触其它部件, 减小了不必要 的磨损。 另外, 对于此类连接方式, 本发明不做限制, 也可采用本领域技 术人员所知的其它连接方式, 在此不再赘述。
如图 2所示, 作为一种优选的实施方式, 在所述方形框架的相对两侧 分别连接有所述柱塞 13, 在所述方形框架的另外相对的两侧分别设置有所 述导向块 18。 gp, 以图 2中所示的方向来说, 在方形框架的左右两侧分别 连接有一个柱塞 13, 在方形框架的上下两侧则分别设置有导向块 18, 上下 一对导向块 18用于限制方形框架仅在左右方向上往复直线移动。
在图 2中, 具体而言,通过偏心轴 3和滑块 15带动柱塞 13在泵单元 1 的吸油压油部分 11内往复直线运动, 从而通过吸油口 a从安装在泵单元 1 上的储油桶 2 (见图 3 ) 内泵吸油脂, 然后向外供送给所需的润滑点。 在吸 油压油部分 11和导向块 18上可以设置一些固定孔 9,从而可以通过如螺栓 等紧固件非常方便地将其固定到出油部分 12上。换言之,吸油压油部分 11、 导向块 18和滑块 15各自作为独立模块, 并安装到出油部分 12上, 因此整 体结构简单、 加工方便且拆装和维护亦非常简便。
如图 2所示, 在方形框架的左右两侧分别设置有一个包括柱塞 13的吸 油压油部分 11, 这两个吸油压油部分 11泵吸的油脂通过出油部分 12上各 自的出油通道 e (见图 1 ) 泵出, 与两个吸油压油部分 11对应的两个出油 通道 e可以在出油部分 12内汇总后, 通过总出油通道 5以及与之相连的油 管 7 (见图 6) 向外供送。 在滑块 15的往复运动下, 上述两个柱塞 13的吸 油压油是交替进行的, 因此通过设置两个吸油压油部分 11, 可以保证油脂 通过总出油通道 5连续向外供送。
图 4是本发明提供的柱塞泵的另一种实施方式的俯视示意图; 图 5是 图 4中柱塞泵的局部剖视示意图。
如图 4和图 5所示, 与上述实施方式不同之处主要在于, 仅在所述方 形框架的相对的两侧中的一侧连接有所述柱塞 13, 而不是在两侧分别设置
柱塞 13。 此实施方式中的其他结构与上述实施方式基本相同。
具体而言,在所述方形框架的相对的两侧中的一侧连接有所述柱塞 13, 在所述方形框架的另外相对的两侧分别设置有所述导向块 18。 gp, 以图 4 中所示的方向来说, 仅在方形框架的左侧连接有一个柱塞 13, 在方形框架 的上下两侧则分别设置有导向块 18,上下一对导向块 18用于限制方形框架 仅在左右方向上往复直线移动。 在此实施方式中, 由于仅在方形框架的一 侧设置柱塞 13, 因此可以适当调整各个零部件之间的位置关系, 例如将方 形框架和偏心轴相对于柱塞泵的中心朝一侧偏移, 以便使得柱塞泵的整体 结构更加紧凑, 较为轻便, 可以根据用户需求将规格设计的较小。
因此, 如图 2所示的带有两个柱塞 13的实施方式可应用于大流量柱塞 泵,而如图 4所示的仅带有一个柱塞 13的实施方式可应用于小流量柱塞泵, 从而使得本发明提供的柱塞泵能够根据工况减小柱塞泵的尺寸并降低成 本, 以为用户带来多种选择。
在此需要说明的是, 本发明对柱塞的个数不做限制, 本领域技术人员 在本发明的范围内, 可以根据柱塞泵的流量等要求改变柱塞个数。 例如, 在图 2所示的实施方式中, 显示了在方形框架的左右两侧分别连接有一个 柱塞 13, 但本领域技术人员很容易理解, 也可以在在方形框架的左右两侧 分别连接有多个柱塞 13。 同理, 在图 4所示的实施方式中, 本领域技术人 员根据需要也可以选择在方形框架的一侧设置一个柱塞 13 或者多个柱塞 13。 当然, 本领域技术人员能够想到的是这里所说的设置多个柱塞 13, 需 要对应地增加与增加的柱塞配合的吸油压油部分, 以完成柱塞泵的吸油压 油工作。
如图 3所示,为了保证储油桶 2内的油脂能够顺利地被吸入到泵单元 1 中, 储油桶 2内通常都设置有搅油盘 21以搅拌油脂, 例如将附着在储油桶 2内壁上的油脂刮下来以及除去油脂中的气泡等。
在本发明中, 储油桶 2内还具有与搅油盘 21相连的轴套 22, 该轴套
22具有异形孔 221, 为了拆卸方便, 搅油盘 21和轴套 22优选使用第二紧 固件 24连接 (例如螺钉等)。 另外, 偏心轴 3的偏心部分 (如偏心轮) 驱 动泵单元 1工作, 偏心轴 3的上端 31则形状配合地***到异形孔 221内, 即偏心轴的上端 31也采用和异形孔 221形状相同的结构。
需要说明的是, 在本发明中, 此次所涉及的异型孔 221 以及下述的异 型杆 81等中的 "异型"均是形容截面为非圆结构的部件, 即通过非圆结构 之间的型面连接配合实现相关部件的扭矩传递。 作为一个优选实施例, 异 形孔 221和偏心轴的上端 31优选为方形结构, 也可采用三角形或其他具有 非圆截面的结构。 通过这种结构, 既能够实现偏心轴 3和轴套 22之间的扭 矩传递进而驱动搅油盘 21转动, 又能使得偏心轴 3与轴套 22之间拆装非 常方便。
如图 5所示, 当本发明采用图 4所示的实施方式时, 为了节约内部空 间和保证柱塞 13的正常工作, 可以偏置偏心轴 3, 即不将偏心轴 3设置在 柱塞泵的中心位置。 因此, 为了实现偏心轴 3带动设置在中心的轴套 22旋 转, 进而带动搅油盘 21旋转的目的, 本发明可以在偏心轴 3和轴套 22之 间设置齿轮机构 8 (例如包括两个相互啮合的齿轮), 以将偏心轴 3的旋转 力传递给搅油盘 21。 gp, 两个相互啮合的齿轮中, 其中一个和偏心轴 3连 接, 另一个和异形杆 81连接, 由异形杆 81配合异型孔 221, 并带动轴套 22转动, 同样既能够实现偏心轴 3和轴套 22之间的扭矩传递, 又能使得偏 心轴 3与轴套 22之间拆装非常方便。 另外, 此处的齿轮机构 8为本领域技 术人员所知的结构, 在此不再过多赘述。
实际工作中, 通过异形配合, 轴套 22可以将偏心轴 3的旋转力传递给 搅油盘 21 以带动搅油盘 21搅拌油脂。 若需要维修或维护时, 直接将偏心 轴 3从轴套 22中拔出即可, 拆装非常方便。
此外, 为了方便拆装, 可以通过螺栓等第一紧固件 121将储油桶 2安 装到泵单元 1上 (具体地, 安装到泵单元 1的出油部分 12上)。
另外, 为了将轴套 22安装在储油桶 2的底端, 储油桶 2底端具有安装 孔, 安装孔内装有轴承 23, 轴套 22配合地***轴承 23的内圈中。 使得偏 心轴 3和轴套 22可即时插拔, 方便拆卸。
如图 6、 图 7和图 8所示, 为了顺利将油脂向外送出, 本发明提供的柱 塞泵还包括出油装置, 该出油装置包括形成于泵单元 1 上的总出油通道 5 (与图 1中所示的出油通道 e连通) 以及与该总出油通道 5相连的油管 6, 所述出油装置还包括螺栓 4, 所述螺栓 4具有相互连通的轴向通孔 41和径 向通孔 42, 所述油管 6的一端具有油管接头 7, 所述螺栓 4穿过所述油管 接头 7拧固到所述总出油通道 5内, 所述轴向通孔 41与所述总出油通道 5 连通, 所述径向通孔 42与所述油管 6连通。
在上述技术方案中, 螺栓 4具有外螺紋, 总出油通道 5具有内螺紋, 通过螺紋配合, 螺栓 4可以穿过油管接头 7而拧入到总出油通道 5内, 因 此可以非常方便地将油管 6和总出油通道 5连接起来。
螺栓 4具有轴向通孔 41和径向通孔 42。 当螺栓 4拧入到总出油通道 5 内时, 总出油通道 5与螺栓 4的轴向通孔 41相通, 从而其中的油脂可以通 过轴向通孔 41和径向通孔 42流入到油管 6内。
油管接头 7通常形成为具有内孔 71的管状, 且在管壁上形成有与油管 6连通的侧开口 72。 螺栓 4穿过油管接头 7的内孔 71, 且螺栓 4的径向通 孔 42与油管接头 7的侧开口 72连通, 从而可以保证径向通孔 42与油管 6 连通。 油管接头 7通常可以与油管 6—体形成, 但也可以通过适当的方式 将二者稳固地连接在一起, 例如可拆卸地连接在一起。
为了配合油管接头 7的侧开口 72, 所述螺栓 4优选具有相互交叉成十 字形的两个径向通孔 42。 因此, 在安装时, 可以选择两个径向通孔 42的四 个开口端中的任意一个与油管接头 7上的侧开口 72相通, 从而安装非常方 便, 且允许油管 6具有多个不同的安装角度, 安装灵活。
优选地,在所述油管接头 7与述螺栓 4的螺栓头 43之间和 /或在所述油
管接头 7与所述泵单元 1之间可以具有密封垫片, 以防止油脂从该连接处 泄漏, 另外除了密封垫片外, 其他本领域内公知的密封件均适用于本发明, 本发明对此不做限制。
综上所述, 与现有技术相比, 本发明充分利用了模块化的设计思想, 使得整个柱塞泵结构简单, 拆装和维护非常方便, 且工作稳定可靠。 具体 而言, 与现有技术相比, 本发明至少具有如下特点:
一、 泵单元 1采用分体式设计, 包括互相可拆卸连接在一起的吸油压 油部分 11和出油部分 12, 因此, 各个部分结构简单且容易加工, 并且二者 之间拆装维护亦非常方便。
二、 在吸油压油部分 11, 通过柱塞 13、 单向阀阀芯 14、 复位弹簧 19 和封堵 17之间的相互配合,保证了吸油压油过程的工作可靠性和工作效率。 另外, 通过柱塞 13端面与单向阀阀芯 14端面之间的零间隙配合 (压油过 程结束时), 可以改善其工作耐久性且提高压油效率。
三、 偏心轴 3通过滑块 15带动柱塞 13往复直线移动, 柱塞 13不再需 要弹簧来复位, 从而彻底解决了由于使用弹簧复位所导致的所有问题, 例 如弹簧失效、 卡死等引起的柱塞泵无法正常工作的问题。
四、 偏心轴 3与储油桶 2上的轴套 22之间采用插拔式的连接方式, 因 此拆装非常方便。 另外, 轴套 22与搅油盘 21之间亦可以通过螺栓、 螺钉 等第二紧固件 24相连,储油桶 3和泵单元 1 (具体为泵单元的出油部分 12) 之间也可以通过螺栓等第一紧固件 121 相连, 因此整体结构拆装维护都非 常方便。
五、 油管 6和总出油通道 5之间采用独特的具有轴向通孔 41和径向通 孔 42的螺栓 4以及油管接头 7进行连接, 因此结构简单、 连接方便, 并且 油管 6还可以选择不同的安装角度, 因此安装灵活。
另外, 通过本发明的模块化设计思想, 还可以将柱塞泵的一些附属装 置如压力表、 过滤器、 防爆阀、 压力传感器等集成在一个功能模块上, 使
得柱塞泵不仅整体结构简单、 外形美观, 而且使用和维护也非常方便。 以上结合附图详细描述了本发明的优选实施方式, 但是, 本发明并不 限于上述实施方式中的具体细节, 在本发明的技术构思范围内, 可以对本 发明的技术方案进行多种简单变型, 这些简单变型均属于本发明的保护范 围。 例如滑块、 柱塞、 单向阀阀芯和封堵的形状以及各种连接、 紧固及密 封的方式等。
另外需要说明的是, 在上述具体实施方式中所描述的各个具体技术特 征, 在不矛盾的情况下, 可以通过任何合适的方式进行组合, 如应用本发 明所列的一项或几项的结构, 为了避免不必要的重复, 本发明对各种可能 的组合方式不再另行说明, 不脱离本发明技术构思的各种组合均属于本发 明的保护范围。
此外, 本发明的各种不同的实施方式之间也可以进行任意组合, 只要 其不违背本发明的思想, 其同样应当视为本发明所公开的内容。
Claims
1、 一种柱塞泵, 该柱塞泵包括偏心轴 (3)、 泵单元 (1) 和安装在泵 单元 (1) 上方的储油桶 (2), 所述偏心轴 (3) 穿过所述泵单元 (1) 连接 到所述储油桶 (2), 其特征在于, 所述泵单元 (1) 包括可拆卸地连接在一 起的吸油压油部分 (11) 和出油部分 (12), 所述偏心轴 (3) 用于驱动所 述吸油压油部分 (11) 从所述储油桶 (2) 内泵吸油脂, 并将油脂通过所述 出油部分 (12) 供出。
2、根据权利要求 1所述的柱塞泵,其特征在于,所述吸油压油部分(11) 具有相互连通的吸油口 (a)、 油腔(b)和出油口 (c), 所述出油部分(12) 具有出油通道 (e), 所述出油口 (c) 与所述出油通道 (e) 连通。
3、根据权利要求 2所述的柱塞泵,其特征在于,所述吸油压油部分(11) 包括柱塞 (13) 和单向阀阀芯 (14), 所述柱塞 (13) 可轴向移动地设置在 所述油腔 (b) 的一侧, 所述单向阀阀芯 (14) 可轴向移动地设置在所述油 腔 (b) 的另一侧, 所述偏心轴 (3) 驱动所述柱塞 (13) 轴向移动。
4、根据权利要求 3所述的柱塞泵, 其特征在于, 所述单向阀阀芯(14) 的外侧设置有封堵 (17), 并且所述单向阀阀芯 (14) 与所述封堵 (17) 之 间设置有复位弹簧 (19)。
5、根据权利要求 4所述的柱塞泵,其特征在于,所述吸油压油部分(11) 具有泄油口(d),该泄油口(d)位于所述单向阀阀芯(14)与所述封堵(17) 之间, 且与所述出油部分 (12) 上的出油通道 (e) 连通。
6、 根据权利要求 3所述的柱塞泵, 其特征在于, 所述柱塞泵还包括滑 块 (15), 所述柱塞 (13) 连接到所述滑块 (15), 所述偏心轴 (3) 与所述 滑块 (15) 接触并带动所述滑块 (15) 往复直线移动。
7、 根据权利要求 6所述的柱塞泵, 其特征在于, 所述滑块 (15) 形成 为方形框架, 该方形框架上具有卡槽 (16), 所述柱塞的头部 (131) 接合 在所述卡槽 (16) 内。
8、 根据权利要求 7所述的柱塞泵, 其特征在于, 所述偏心轴 (3) 位 于所述方形框架的内部, 并且所述方形框架的侧面设置有导向块 (18)。
9、 根据权利要求 8所述的柱塞泵, 其特征在于, 所述方形框架的相对 的两侧分别连接有所述柱塞 (13), 所述方形框架的另外相对的两侧分别设 置有所述导向块 (18)。
10、 根据权利要求 8所述的柱塞泵, 其特征在于, 所述方形框架的相 对的两侧中的一侧连接有所述柱塞 (13), 所述方形框架的另外相对的两侧 分别设置有所述导向块 (18)。
11、 根据权利要求 1所述的柱塞泵, 其特征在于, 所述储油桶 (2) 包 括搅油盘 (21) 和与该搅油盘 (21) 相连的轴套 (22), 该轴套 (22) 具有 异形孔 (221), 所述偏心轴 (3) 的上端 (31) 形状配合地***到所述异形 孔 (221) 内。
12、 根据权利要求 1所述的柱塞泵, 其特征在于, 所述储油桶 (2) 包 括搅油盘 (21) 和与该搅油盘 (21) 相连的轴套 (22), 该轴套 (22) 具有 异形孔 (221), 所述偏心轴 (3) 的上端 (31) 与异形杆 (81) 的下端通过 齿轮机构 (8) 传动连接, 所述异形杆 (81 ) 的上端形状配合地***到所述 异形孔 (221 ) 内。
13、 根据权利要求 11或 12所述的柱塞泵, 其特征在于, 所述储油桶 (2) 可拆卸地安装在所述泵单元 (1 ) 上。
14、 根据权利要求 13所述的柱塞泵, 其特征在于, 在所述储油桶 (2) 的底端具有安装孔, 所述轴套 (22) 通过轴承 (23 ) 安装在所述安装孔内。
15、 根据权利要求 14所述的柱塞泵, 其特征在于, 所述搅油盘 (21 ) 通过第二紧固件 (24) 可拆卸地连接到所述轴套 (22) 上。
16、 根据权利要求 1所述的柱塞泵, 其特征在于, 所述柱塞泵还包括 出油装置, 该出油装置包括形成于泵单元 (1 ) 上的总出油通道 (5 ) 以及 与该总出油通道 (5 ) 相连的油管 (6), 所述出油装置还包括螺栓 (4), 所 述螺栓 (4) 具有相互连通的轴向通孔 (41 ) 和径向通孔 (42), 所述油管 (6) 的一端具有油管接头 (7), 所述螺栓 (4) 穿过所述油管接头 (7) 拧 固到所述总出油通道 (5 ) 内, 所述轴向通孔 (41 ) 与所述总出油通道 (5 ) 连通, 所述径向通孔 (42) 与所述油管 (6) 连通。
17、 根据权利要求 16所述的柱塞泵, 其特征在于, 所述油管接头 (7) 形成为具有内孔 (71 ) 的管状, 且侧壁上具有与所述油管 (6) 连通的侧开 口 (72), 所述螺栓 (4) 穿过所述内孔 (71 ) 且所述径向通孔 (42) 与所 述侧开口 (72) 连通。
18、 根据权利要求 17所述的柱塞泵, 其特征在于, 所述油管接头 (7) 与所述油管 (6) 可拆卸地连接或者形成为一体结构
19、 根据权利要求 17所述的柱塞泵, 其特征在于, 所述螺栓 (4) 具 有相互垂直的两个径向通孔 (42) 以选择性地与所述侧开口 (72) 连通。
20、根据权利要求 16所述的柱塞泵,其特征在于,在所述油管接头(7 ) 与所述螺栓 (4) 的头部 (43 ) 之间和 /或在所述油管接头 (7) 与所述泵单 元 (1 ) 之间具有密封垫片。
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CN115748655B (zh) * | 2022-11-30 | 2023-06-20 | 北京振冲工程机械有限公司 | 一种液压振冲器 |
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