CN214092180U

CN214092180U - Hydraulic pump pumping unit

Info

Publication number: CN214092180U
Application number: CN202022751730.9U
Authority: CN
Inventors: 周浙潭; 罗园梁; 胡波
Original assignee: Zhejiang Weidun Machinery Technology Co ltd
Current assignee: Zhejiang Weidun Machinery Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-08-31
Anticipated expiration: 2030-11-24

Abstract

The application relates to a hydraulic pump pumping unit, which comprises a pumping pipeline, an oil suction assembly and an oil delivery assembly, wherein the oil suction assembly and the oil delivery assembly are arranged on the pumping pipeline, one end of the pumping pipeline is provided with a lubricating oil outlet, the other end of the pumping pipeline is provided with a driving port for providing a power source for the oil delivery assembly, the pumping pipeline is provided with an oil suction port for sucking lubricating oil, the oil delivery assembly is used for pumping the lubricating oil sucked in the pumping pipeline out of the lubricating oil outlet under the action of the power source, and the oil suction assembly is used for sucking the lubricating oil from the oil suction port after the oil delivery assembly pumps the lubricating oil out of the lubricating oil. This application utilizes the drive oil to provide pressure and promotes the piston and send out the target liquid pump, uses the danger of electric power promotion piston pumping when reducing colliery pumping operation.

Description

Hydraulic pump pumping unit

Technical Field

The application relates to the technical field of pumping, in particular to a hydraulic pump pumping unit.

Background

The pumping technique refers to pumping a target liquid by pushing a piston by a power source. Common water pumps and delivery pumps in life are pumping equipment.

The inventor thinks that: when the coal mine works in places such as a coal mine, combustible gas is contained in the air of the coal mine, and if the piston is pushed to move in an electric mode, danger is easy to occur when liquid is pumped.

SUMMERY OF THE UTILITY MODEL

In order to reduce the danger of using electric power to push a piston to pump during coal mine pumping operation, the application provides a hydraulic pump pumping unit.

The application provides a hydraulic pump pumping unit adopts following technical scheme:

a pumping unit of a hydraulic pump comprises a pumping pipeline, an oil suction assembly and an oil delivery assembly, wherein the oil suction assembly and the oil delivery assembly are arranged on the pumping pipeline, one end of the pumping pipeline is provided with a lubricating oil outlet, the other end of the pumping pipeline is connected with a hydraulic oil supply device, the pumping pipeline is provided with an oil suction port used for sucking lubricating oil, the oil delivery assembly is used for pumping the lubricating oil sucked in the pumping pipeline out of the lubricating oil outlet under the action of a power source, and the oil suction assembly is used for sucking the lubricating oil from the oil suction port after the oil delivery assembly pumps the lubricating oil.

By adopting the technical scheme, when the oil suction assembly is used, lubricating oil in the oil storage cavity of the lubricating pump is sucked into the pumping pipeline through the oil suction port by the oil suction assembly, the hydraulic oil supply equipment provides driving oil to enable the oil feeding assembly to work, the oil feeding assembly pumps the lubricating oil in the pumping pipeline out from the lubricating oil outlet, and hydraulic power is provided by the hydraulic supply equipment, so that the piston moves to pump target liquid, the structure is simple, and the danger of using electric power to push the piston to pump during coal mine pumping operation is reduced.

Preferably, the oil absorption subassembly includes reset spring, check valve, oil absorption piston, the oil absorption piston slides and sets up in the pump sending pipeline, the check valve sets up in the pump sending pipeline and is located between oil absorption piston and the lubricating oil export, set up the oil absorption mouth on the lateral wall of pump sending pipeline, the oil absorption mouth communicates with the oil storage chamber of the pump body, reset spring sets up in the pump sending pipeline, and reset spring's one end is contradicted with the oil absorption piston, and the other end is inconsistent with the pump sending pipeline to the drive oil absorption piston keeps away from the check valve, send oil assembly setting to keep away from the one end of lubricating oil export and be used for promoting the oil absorption piston and remove to the check valve direction at the pump sending pipeline, the direction that switches on of check valve is along the direction of oil absorption piston to check valve.

By adopting the technical scheme, when oil is absorbed, the oil absorption piston is jacked open through the return spring, so that negative pressure is generated in the pumping pipeline, lubricating oil enters the pumping pipeline from the oil absorption port, and the oil storage joint is blocked by the one-way valve; when oil is discharged, driving oil is input into the driving port to drive the oil delivery assembly to work, the oil delivery assembly pushes the oil suction piston to move towards the one-way valve in a butting mode, lubricating oil between the oil suction port and the one-way valve is compressed after the oil suction port passes through the height of the oil suction port, pressure is generated on the one-way valve, the one-way valve is conducted, and the lubricating oil between the oil suction port and the one-way valve is further led out from the lubricating oil outlet.

Preferably, the oil feeding assembly comprises an oil cylinder and a driving piston, the oil cylinder is arranged at one end of the pumping pipeline, which is opposite to the one-way valve, the driving piston is arranged in the oil cylinder in a sliding manner and extends into the pumping pipeline to abut against the oil suction piston to drive the oil suction piston to move towards the one-way valve, and an oil inlet of the oil cylinder is communicated with the driving oil channel.

Through adopting above-mentioned technical scheme, when producing oil, the drive oil that the drive port got into promotes the drive piston and removes in the hydro-cylinder to thereby contradict the oil absorption piston and remove and release lubricating oil from lubricating oil exit.

Preferably, one end of the pumping pipeline is provided with a piston sleeve, the lubricating oil outlet is arranged at one end of the piston sleeve, which is back to the pumping pipeline, the piston sleeve is provided with an oil suction hole communicated with the inside of the pumping pipeline, the one-way valve is arranged on the piston sleeve and is positioned below the oil suction hole, one end of the reset spring is abutted against the oil suction piston, and the other end of the reset spring is sleeved on the piston sleeve and is abutted against the piston sleeve.

By adopting the technical scheme, the lubricating oil entering the oil suction opening enters the pumping pipeline, when the oil suction piston is pushed open by the return spring, negative pressure is generated inside the piston sleeve, and the lubricating oil enters the piston sleeve from the pumping pipeline through the oil suction hole and is positioned between the one-way valve and the oil suction piston; lubricating oil carries out self-lubrication to the part in the pump sending pipeline after entering pump sending pipeline, reduces the frictional force when oil absorption piston removes.

Preferably, the pump unit installation block includes pump unit valve block, hydro-cylinder valve block and hydro-cylinder valve gap, pump unit valve block sets up on the pump body, hydro-cylinder valve block sets up on pump unit valve block, the hydro-cylinder valve gap sets up in one side of hydro-cylinder valve block back to pump unit valve block, the hydro-cylinder sets up on hydro-cylinder valve block, the pump sending pipeline sets up in pump unit valve block, and runs through pump unit valve block to hydro-cylinder valve block direction.

By adopting the technical scheme, the pump unit mounting blocks are arranged in a split manner, so that the whole pump unit mounting blocks and the internal components can be conveniently mounted and dismounted, and the manufacturing and production processes are also facilitated.

Preferably, the piston cover sets up including an organic whole and follows the business turn over oil sleeve pipe, oil absorption sleeve pipe and the installation sleeve pipe from high to low direction, the bottom of oil absorption piston slides and connects in business turn over oil sleeve pipe and oil absorption sleeve pipe, and the sheathed tube external diameter of business turn over oil is less than the oil absorption sleeve pipe to form the step that supplies reset spring to contradict back to the one end of drive piston, inhale oil hole and set up on the oil absorption sleeve pipe, the check valve sets up in the installation sleeve pipe, the lubricating oil export sets up in the one end of installation sleeve pipe to the installation sleeve pipe.

By adopting the technical scheme, when the oil suction sleeve is used, the oil suction piston moves to and fro in the oil inlet and outlet sleeve under the driving of the reset spring and the driving piston to realize the oil suction and outlet processes.

Preferably, the check valve supports tight spring, disk seat, one-way end cap and adjusts the plug screw, be equipped with the conflict conical surface in the installation sleeve, adjust the plug screw threaded connection in the installation sleeve and be located conflict conical surface below, support tight spring bottom and set up on adjusting the plug screw, one-way end cap bottom sets up on the disk seat, and the disk seat sets up in the top of supporting tight spring, and one-way end cap outer wall is equipped with the drive conical surface, and the drive conical surface offsets tightly with the conflict conical surface.

Through adopting above-mentioned technical scheme, adjust the plug screw as supporting, support tight spring and support tightly on the conical surface of contradicting with the one-way end cap and realize sealed, when producing oil, under the oil pressure effect, support the spring shrink tightly to make the check valve switch on.

Preferably, the mounting sleeve is threadedly connected to the pumping conduit.

Through adopting above-mentioned technical scheme, thereby connect the piston cover on the pump sending pipeline through installation sleeve pipe and pump sending pipeline threaded connection, make things convenient for the dismouting.

Preferably, an oil inlet channel for communicating the oil storage cavity with the pumping pipeline is formed in the pump unit valve block, and the oil inlet channel is located at one end, far away from the piston sleeve, of the pumping pipeline.

By adopting the technical scheme, in the oil outlet process, the oil absorption piston moves towards the one-way valve, partial pressure between the driving piston and the oil absorption piston is reduced, lubricating oil enters the pumping pipeline along the oil inlet channel, and during oil absorption, the oil absorption piston is extruded when being reset and moved, so that the partial lubricating oil is discharged from the oil inlet channel, and the oil absorption piston in the pumping pipeline and the pumping pipeline is lubricated when entering and exiting.

Preferably, the sectional area of the oil suction piston is larger than the oil outlet sectional area of the lubricating oil outlet.

Through adopting above-mentioned technical scheme, can increase the pressure of lubricating oil export oil, be favorable to the discharge of lubricating oil.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the hydraulic oil supply equipment provides driving oil to enable the oil delivery assembly to work, the oil delivery assembly pumps out lubricating oil in the pumping pipeline from the lubricating oil outlet, and the hydraulic supply equipment provides hydraulic power, so that the piston moves to pump target liquid, the structure is simple, and the danger that the piston is pushed to pump by using electric power during coal mine pumping operation is reduced;

2. lubricating oil entering the oil suction opening enters the pumping pipeline, when the oil suction piston is pushed open by the return spring, negative pressure is generated inside the piston sleeve, and the lubricating oil enters the piston sleeve from the pumping pipeline through the oil suction hole and is positioned between the one-way valve and the oil suction piston; after the lubricating oil enters the pumping pipeline, the components in the pumping pipeline are self-lubricated, so that the friction force generated when the oil absorption piston moves is reduced;

3. the sectional area of the oil absorption piston is larger than the oil outlet sectional area of the lubricating oil outlet, so that pressure-multiplying conveying can be realized, and the pressure of liquid output is ensured.

Drawings

Fig. 1 is a cross-sectional view of a pumping unit of a hydraulic pump according to the present application.

Fig. 2 is a schematic structural diagram of a piston sleeve in a pumping unit of a hydraulic pump according to the present application.

Description of reference numerals: 2. a pumping conduit; 21. a first pumping conduit; 22. a second pumping conduit; 222. an oil suction port; 3. an oil absorption assembly; 31. a return spring; 32. a one-way valve; 321. the spring is tightly propped; 322. a valve seat; 3221. a valve stem bore; 323. a one-way plug; 3231. a drive conical surface; 324. adjusting a screw plug; 3241. trepanning; 3242. an oil outlet hole; 325. a valve stem; 326. a seal ring; 33. an oil suction piston; 331. a rod portion; 332. abutting against the contact; 333. a spring seat; 4. an oil delivery assembly; 41. an oil cylinder; 411. a drive chute; 412. an oil inlet; 42. a drive piston; 51. a pump unit valve block; 511. an oil inlet channel; 512. a lubricant oil passage; 52. a cylinder valve block; 521. an oil cylinder mounting hole; 53. a valve cover of the oil cylinder; 54. a drive oil passage; 541. a first oil supply passage; 542. a second oil supply passage; 543. a third oil supply passage; 6. a piston sleeve; 61. an oil inlet sleeve and an oil outlet sleeve; 62. an oil suction sleeve; 621. an oil suction hole; 63. installing a sleeve; 2631. a second thread; 64. a step; 65. a contact conical surface; 66. and a lubricating oil outlet.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a hydraulic pump pumping unit. Referring to fig. 1, the oil suction device comprises a pumping pipeline 2, and an oil suction assembly 3 and an oil delivery assembly 4 which are arranged on the pumping pipeline 2.

The oil suction assembly 3 comprises a return spring 31, a one-way valve 32 and an oil suction piston 33.

The oil delivery assembly 4 includes a cylinder 41 and a drive piston 42.

As shown in fig. 1, the pumping pipe 2 is installed inside the pump body through a pump unit installation block, the pump unit installation block includes a pump unit valve block 51, a cylinder valve block 52, and a cylinder valve cover 53, the pump unit valve block 51 is installed on a bottom plate of an oil storage chamber of the pump body, a portion of the pump unit valve block 51 is located in the oil storage chamber above the bottom plate, and the other portion penetrates the bottom plate and is located below the bottom plate. The cylinder valve block 52 is installed on the pump unit valve block 51, the cylinder valve cover 53 is installed on the cylinder valve block 52, the cylinder installation hole 521 is opened on the upper surface of the cylinder valve block 52, the cylinder 41 is installed in the cylinder installation hole 521, a vertical and downward driving sliding groove 411 is arranged in the oil cylinder 41, the driving sliding groove 411 penetrates through the top of the oil cylinder 41 to form an oil inlet 412, the driving piston 42 is connected in the driving sliding groove 411 in a sliding manner, the cylinder valve cover 53 is provided with a first oil supply channel 541 communicated with the top end of the driving chute 411 to push the driving piston 42 to move downwards, the cylinder valve block 52 is provided with a second oil supply channel 542 connected with the first oil supply channel 541, the pump unit valve block 51 is provided with a third oil supply channel 543 connected with the second oil supply channel 542, and the first oil supply channel 541, the second oil supply channel 542 and the third oil supply channel 543 form an oil supply pipeline for communicating with the pump body and supplying driving oil to the driving oil channel 54 of the oil inlet 412.

As shown in fig. 1 and 2, the pumping pipeline 2 includes a first pumping pipeline 21 and a second pumping pipeline 22, the first pumping pipeline 21 is opened on the cylinder valve block 52 and is vertically and upwardly communicated with the driving chute 411, the bottom end of the driving piston 42 extends into the first pumping pipeline 21, an oil inlet channel 511 communicating the oil storage cavity with the first pumping pipeline 21 is opened on the pump unit valve block 51, the second pumping pipeline 22 is opened on the pump unit valve block 51 and penetrates through the upper and lower surfaces of the pump unit valve block 51, the second pumping pipeline 22 is coaxial with the first pumping pipeline 21, and the bottom end of the second pumping pipeline 22 is provided with the piston sleeve 6.

The piston sleeve 6 comprises an oil inlet and outlet sleeve 61, an oil suction sleeve 62 and a mounting sleeve 63 which are integrally arranged and are arranged along the direction from high to low, a first thread is arranged at the bottom end of the second pumping pipeline 22, a second thread 2631 matched with the first thread is arranged on the outer wall of the mounting sleeve 63, the mounting sleeve 63 is mounted at the bottom end of the second pumping pipeline 22 through the matching of the first thread and the second thread 2631, the outer diameter of the oil inlet and outlet sleeve 61 is smaller than that of the oil suction sleeve 62 to form a step 64, the outer diameter of the oil suction sleeve 62 is smaller than that of the second pumping pipeline 22, the oil inlet and outlet sleeve 61 and the oil suction sleeve 62 both extend into the second pumping pipeline 22, an oil suction hole 621 penetrating through the side wall of the oil suction sleeve 62 and communicated with the second pumping pipeline 22 is formed on the inner wall of the oil suction sleeve 62, an oil suction port 222 is formed on the inner wall of the second pumping pipeline 22, and the height position of the oil suction port 222 is located at the height position of the oil suction sleeve 62, the pump unit valve block 51 is provided with a lubricating oil passage 512 therein, and the lubricating oil passage 512 communicates the oil suction port 222 with the oil storage chamber of the pump body.

The inner diameter of the oil inlet and outlet sleeve 61 is equal to that of the oil suction sleeve 62, the inner diameter of the mounting sleeve 63 is larger than that of the oil suction sleeve 62, a contact conical surface 65 is arranged at the joint of the inner wall of the mounting sleeve 63 and the inner wall of the oil suction sleeve 62, and a lubricating oil outlet 66 is arranged at the bottom end of the mounting sleeve 63.

Oil absorption piston 33 includes pole portion 331 and conflict head 332, and pole portion 331 is vertical to be set up and the bottom slides in business turn over oil sleeve 61 and oil absorption sleeve 62, and during the top of pole portion 331 upwards stretched into second pump line 22, conflict head 332 an organic whole set up in the top of pole portion 331, and pole portion 331 is equipped with spring holder 333 near the position cover of conflicting contact 332, and reset spring 31 overlaps on locating pole portion 331, and reset spring 31's top is contradicted with spring holder 333, and the bottom is contradicted with step 64.

The check valve 32 comprises a propping spring 321, a valve seat 322, a check plug 323 and an adjusting screw plug 324, the adjusting screw plug 324 is connected in the installation sleeve 63 in a threaded manner, the top end of the adjusting screw plug 324 is provided with a sleeve hole 3241 coaxial with the installation sleeve 63, the bottom end of the adjusting screw plug 324 is provided with an oil outlet hole 3242 coaxial with the sleeve hole 3241 and used for allowing lubricating oil to flow out when the check valve 32 is conducted, the bottom end of the propping spring 321 props against the bottom surface of the sleeve hole 3241, the valve seat 322 is sleeved on the top end of the propping spring 321, the valve seat 322 is provided with a valve rod hole 3221 penetrating through the upper end and the lower end of the valve seat 322 and coaxial with the installation sleeve 63, a vertical valve rod 325 slides in the valve rod hole 3221, the check plug 323 is integrally arranged at the top end of the valve rod 325 and extends upwards into the oil inlet and outlet sleeve 61, the outer wall of the check plug 323 is provided with a driving conical surface 3231 matched with the propping against 65, the inclination degree of the driving conical surface 3231 is greater than that of the propping against conical surface 65, the valve rod 325 is sleeved with a sealing ring 326, and the sealing ring 326 is located between the one-way plug 323 and the top surface of the valve seat 322 and is used for separating the oil inlet/outlet sleeve 61 and the installation sleeve 63 when the abutting spring abuts the driving conical surface 3231 against the abutting conical surface 65.

The implementation principle of the hydraulic pump pumping unit in the embodiment of the application is as follows:

lubricating oil is stored in the oil storage cavity, when the oil storage cavity is used, the driving oil is sent into the oil inlet 412 through the driving oil channel 54, the pressure of the driving oil pushes the driving piston 42 to move towards the second pumping pipeline 22, then the oil absorption piston 33 is pushed to move towards the one-way valve 32 in a butting mode, when the oil absorption piston 33 passes through the oil absorption hole 621, the lubricating oil between the oil absorption piston 33 and the one-way valve 32 is extruded towards the one-way valve 33, the one-way plug 323 and the valve rod 325 are pushed to move, the one-way valve 32 is conducted, the lubricating oil is extruded from the oil outlet 3242 along a gap between the one-way valve 32 and the piston sleeve 6, and the process of pumping the lubricating oil is completed.

After the pumping of the lubricating oil is completed, the oil pressure of the driving oil stops being provided, the oil suction piston 33 moves to the initial position under the action of the return spring 31, and when the oil suction piston 33 moves, negative pressure is formed between the oil suction piston 33 and the one-way valve 32, so that the lubricating oil is sucked along the oil storage cavity, the lubricating oil channel 54 and the oil suction hole 621, and the oil feeding process of the next pumping is completed. The drive oil passage 54 then continues to be fed, so as to reciprocate, and suction and pumping of the lubricating oil are performed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A hydraulic pump pumping unit characterized by: the oil suction device comprises a pumping pipeline (2), an oil suction assembly (3) and an oil delivery assembly (4), wherein the oil suction assembly (3) and the oil delivery assembly (4) are arranged on the pumping pipeline (2), one end of the pumping pipeline (2) is provided with a lubricating oil outlet (66), the other end of the pumping pipeline is connected with a hydraulic oil supply device, an oil suction opening (222) used for sucking lubricating oil is formed in the pumping pipeline (2), the oil delivery assembly (4) is used for pumping the lubricating oil sucked in the pumping pipeline (2) out of the lubricating oil outlet (66) under the action of a power source, and the oil suction assembly (3) is used for sucking the lubricating oil from the oil suction opening (222) after the lubricating oil is pumped out of the oil delivery assembly (4).

2. A hydraulic pump pumping unit as claimed in claim 1, characterized in that: the oil absorption assembly (3) comprises a return spring (31), a one-way valve (32) and an oil absorption piston (33), the oil absorption piston (33) is arranged in the pumping pipeline (2) in a sliding manner, the one-way valve (32) is arranged in the pumping pipeline (2) and is positioned between the oil absorption piston (33) and a lubricating oil outlet (66), an oil suction port (222) is formed in the side wall of the pumping pipeline (2), the oil suction port (222) is communicated with an oil storage cavity of the pump body, the return spring (31) is arranged in the pumping pipeline (2), one end of the return spring (31) is abutted against the oil absorption piston (33), the other end of the return spring is abutted against the pumping pipeline (2) so as to drive the oil absorption piston (33) to be far away from the one-way valve (32), the oil delivery assembly (4) is arranged at one end, far away from the lubricating oil outlet (66), of the pumping pipeline (2) and is used for pushing the oil absorption piston (33) to move towards the direction of the one-way valve (32), the conducting direction of the one-way valve (32) is along the direction from the oil suction piston (33) to the one-way valve (32).

3. A hydraulic pump pumping unit as claimed in claim 2, characterized in that: send oily subassembly (4) including hydro-cylinder (41) and drive piston (42), hydro-cylinder (41) set up the one end of pump sending pipeline (2) back to check valve (32), drive piston (42) slide set up in hydro-cylinder (41) and stretch into pump sending pipeline (2) and remove to check valve (32) with contradicting drive oil absorption piston (33), oil inlet (412) and drive oil passageway (54) of hydro-cylinder (41) are linked together.

4. A hydraulic pump pumping unit as claimed in claim 3, characterized in that: the one end of pump sending pipeline (2) is provided with piston cover (6), and lubricating oil export (66) set up in the one end of piston cover (6) back to pump sending pipeline (2), set up on piston cover (6) with the inside oil absorption hole (621) that communicate of pump sending pipeline (2), check valve (32) set up in on piston cover (6) and be located oil absorption hole (621) below, reset spring (31) one end is contradicted on oil absorption piston (33), and the other end cup joints on piston cover (6) and is inconsistent with piston cover (6).

5. A hydraulic pump pumping unit as claimed in claim 4, characterized in that: pumping pipeline (2) set up in the pump body through pump unit installation piece, pump unit installation piece includes pump unit valve piece (51), hydro-cylinder valve piece (52) and hydro-cylinder valve cover (53), pump unit valve piece (51) set up on the pump body, hydro-cylinder valve piece (52) set up on pump unit valve piece (51), hydro-cylinder valve cover (53) set up in one side of hydro-cylinder valve piece (52) back to pump unit valve piece (51), hydro-cylinder (41) set up on hydro-cylinder valve piece (52), pumping pipeline (2) set up in pump unit valve piece (51), and run through pump unit valve piece (51) to hydro-cylinder valve piece (52) direction.

6. A hydraulic pump pumping unit as claimed in claim 4, characterized in that: piston cover (6) including integrative setting and along from high business turn over oil sleeve pipe (61), oil absorption sleeve pipe (62) and installation sleeve pipe (63) to low direction, the bottom of oil absorption piston (33) slides and connects in advancing oil sleeve pipe (61) and oil absorption sleeve pipe (62), and the external diameter of advancing oil sleeve pipe (61) is less than oil absorption sleeve pipe (62) to form step (64) that supplies reset spring (31) to contradict back to the one end of drive piston (42), oil absorption hole (621) are seted up on oil absorption sleeve pipe (62), check valve (32) set up in installation sleeve pipe (63), lubricating oil export (66) set up in installation sleeve pipe (63) to the one end of installation sleeve pipe (63).

7. A hydraulic pump pumping unit as claimed in claim 6, characterized in that: check valve (32) support tight spring (321), disk seat (322), one-way end cap (323) and adjust plug screw (324), be equipped with conflict conical surface (65) in installation sleeve (63), adjust plug screw (324) threaded connection in installation sleeve (63) and be located conflict conical surface (65) below, support tight spring (321) bottom and set up on adjusting plug screw (324), one-way end cap (323) bottom sets up on disk seat (322), and disk seat (322) set up in the top of supporting tight spring (321), and one-way end cap (323) outer wall is equipped with driving conical surface (3231), and driving conical surface (3231) and conflict conical surface (65) are supported tightly.

8. A hydraulic pump pumping unit as claimed in claim 7, characterized in that: the mounting sleeve (63) is in threaded connection with the pumping pipeline (2).

9. A hydraulic pump pumping unit as claimed in claim 5, characterized in that: an oil inlet channel (511) for communicating the oil storage cavity with the pumping pipeline (2) is formed in the pump unit valve block (51), and the oil inlet channel (511) is located at one end, far away from the piston sleeve (6), of the pumping pipeline (2).

10. A hydraulic pump pumping unit as claimed in claim 6, characterized in that: the sectional area of the oil suction piston (33) is larger than the oil outlet sectional area of the lubricating oil outlet (66).