CN219388077U

CN219388077U - Hydraulic transmission type high-pressure pump

Info

Publication number: CN219388077U
Application number: CN202320522679.5U
Authority: CN
Inventors: 王纪亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-07-21
Anticipated expiration: 2033-03-14

Abstract

The utility model discloses a hydraulic transmission type high-pressure pump, which comprises: the pump body is internally provided with a cavity; the main shaft is rotatably assembled in the cavity, a driving disc capable of coaxially rotating is mounted on the main shaft, and an annular ramp is arranged on the end face of the driving disc; the piston is movably assembled in the piston containing cavity on the pump body, and the end part of the piston is provided with a bull eye bearing; the bullnose bearing is abutted with the annular ramp so as to be suitable for driving the piston to displace in the piston accommodating cavity on the pump body when the driving disc rotates. The utility model utilizes the convex slope or the concave slope of the annular ramp to drive the bull-eye bearing to roll, so that the piston is stressed in the piston containing cavity on the pump body to realize repeated pumping of oil. The structure is less, is simpler than a vane pump and a plunger pump, has low requirements on materials and processing precision, is low in price, and has even stress and small abrasion of a driving disc.

Description

Hydraulic transmission type high-pressure pump

Technical Field

The utility model relates to a high-pressure pump, in particular to a hydraulic transmission type high-pressure pump.

Background

A hydraulic pump utilizes hydraulic transmission to provide pressurized liquid and operates on the principle of converting mechanical energy of a power machine (such as an electric motor, an internal combustion engine, etc.) into pressure energy of the liquid. The cam is driven by the motor to rotate, when the cam pushes the plunger to move upwards, the sealing volume formed by the plunger and the cylinder body is reduced, oil is extruded from the sealing volume and is discharged to a required place through the one-way valve; when the cam rotates to the descending part of the curve, the spring forces the plunger downwards to form a certain vacuum degree, and oil in the oil tank enters the sealing volume under the action of atmospheric pressure; thus, as the cam causes the plunger to continuously rise and fall, the sealing volume periodically decreases and increases, and the pump continuously draws in and discharges oil.

However, the pump shaft is subjected to unbalanced force by the cam, so that abrasion is serious, leakage is large, the common problem of the hydraulic pump is that the vane pump and the plunger pump have complex structures, high requirements on materials and processing precision and high price, and a better solution to the problems does not exist at present.

Disclosure of Invention

In order to solve the defects of the technology, the utility model provides a hydraulic transmission type high-pressure pump.

In order to solve the technical problems, the utility model adopts the following technical scheme: a hydraulically driven high pressure pump, comprising:

the pump body is internally provided with a cavity;

the main shaft is rotatably assembled in the cavity, a driving disc capable of coaxially rotating is mounted on the main shaft, and an annular ramp is arranged on the end face of the driving disc;

the piston is movably assembled in the piston containing cavity on the pump body, and the end part of the piston is provided with a bull eye bearing;

the bullnose bearing is abutted with the annular ramp so as to be suitable for driving the piston to displace in the piston accommodating cavity on the pump body when the driving disc rotates.

Further, the main shaft is rotatably assembled in the chamber through a first bearing and a second bearing on the pump body, the first bearing is installed in the pump body at one side of the main shaft close to the power source, and the second bearing is installed in the pump body and connected to the shaft end of the main shaft.

Further, the annular ramp has at least two groups of continuous slopes with high and low fluctuation, the continuous slopes with high and low fluctuation are formed in a closed loop, and the shape of the annular ramp is a central symmetrical pattern.

Further, a low-pressure oil suction port and a high-pressure oil discharge port are formed in the pump body, the low-pressure oil suction port is communicated with the cavity, the high-pressure oil discharge port is communicated with the piston containing cavity, and an oil outlet valve is arranged between the high-pressure oil discharge port and the piston containing cavity.

Further, two piston containing cavities are arranged on the pump body, and each piston containing cavity is assembled in the piston containing cavity through a spring.

The utility model discloses a hydraulic transmission type high-pressure pump, which adopts a mode of installing a driving disc on a main shaft, and pressurizes a cavity to convey liquid by means of working volume change of the cavity formed by an annular ramp and a piston, and drives a bullnose bearing to roll by means of a convex slope or a concave slope of the annular ramp, so that the piston is stressed in a piston accommodating cavity on a pump body to reciprocate to realize repeated pumping of oil. The structural part is less, is simpler than a vane pump and a plunger pump, has low requirements on materials and processing precision and low price, and when the main shaft rotates to drive the driving disc to rotate, the ramps with the same two attributes of the annular ramp are always abutted against the two bullseye bearings, so that the driving disc can be uniformly stressed, and the abrasion is correspondingly and greatly reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic structural view of an annular ramp according to the first embodiment.

Fig. 3 is a schematic structural view of an annular ramp according to the second embodiment.

In the figure: 1. a pump body; 2. a chamber; 3. a main shaft; 4. a drive plate; 5. an annular ramp; 6. a piston; 7. a bullseye bearing; 8. a piston cavity; 9. a first bearing; 10. a second bearing; 11. a low-pressure oil suction port; 12. a high-pressure oil outlet; 13. an oil outlet valve; 14. and (3) a spring.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description.

A first embodiment, a hydraulic high-pressure pump as shown in fig. 1 and 2, includes:

the pump body 1, the pump body 1 is internally provided with a cavity 2, and a low-pressure oil suction port 11 is communicated with the cavity 2;

the main shaft 3, the main shaft 3 is rotatably assembled in the chamber 2 through a first bearing 9 and a second bearing 10 on the pump body 1, the first bearing 9 is installed in the pump body 1 on the side of the main shaft 3 close to the power source, and the second bearing 10 is installed in the pump body 1 and connected to the shaft end of the main shaft 3.

The spindle 3 is provided with a driving disc 4 which can coaxially rotate, the driving disc 4 is positioned between a first bearing 9 and a second bearing 10, an annular ramp 5 is arranged on the end face of the driving disc 4, the annular ramp 5 is provided with two groups of continuous slopes which are high and low, the continuous slopes which are high and low are formed in a closed loop, namely, the annular ramp in the embodiment is provided with four slopes which are protruded upwards and four slopes which are recessed downwards, the protruded slopes and the recessed slopes are arranged at intervals, and the shape of the annular ramp 5 is a central symmetrical graph.

The pistons 6 are movably assembled in the piston containing cavities 8 on the pump body 1, two piston containing cavities 8 on the pump body 1 are arranged, each piston containing cavity 8 is assembled in the piston containing cavity 8 through a spring 14, and the end part of each piston 6 is provided with a bull's eye bearing 7;

therefore, the present embodiment realizes that two bullseye bearings 7 respectively abut against two upwardly protruding slopes of the annular ramp 5 or respectively abut against two downwardly recessed slopes of the annular ramp 5 when the driving disc rotates, and the bullseye bearings 7 are mounted in the radiation surface of the annular ramp 5 so as to be suitable for driving the piston 6 to displace in the piston accommodating cavity 8 on the pump body 1 when the driving disc 4 rotates.

The pump body 1 is provided with a low-pressure oil suction port 11 and a high-pressure oil discharge port 12, the low-pressure oil suction port 11 is communicated with the cavity 2, the high-pressure oil discharge port 12 is communicated with the piston containing cavity 8, and an oil outlet valve 13 is arranged between the high-pressure oil discharge port 12 and the piston containing cavity 8.

In this embodiment, the spindle is driven by a power source such as a motor, the spindle rotates to drive the driving disc to rotate, the cavity is pressurized by virtue of the working volume change of the cavity formed by the annular ramp and the piston, so as to convey liquid, when two upwards protruding slopes of the annular ramp move to be abutted against two bullnose bearings 7, the piston compresses a spring and moves into the piston containing cavity, the cavity volume is small and becomes large, vacuum is formed, at the moment, oil is sucked into the cavity from the low-pressure oil suction port, and the piston moves into the piston containing cavity to extrude the liquid and discharge the liquid from the high-pressure oil discharge port;

when the slope surfaces of the two downward depressions of the annular ramp move against to be abutted against the two bullseye bearings, the volume of the cavity is reduced from large, the piston containing cavity is reduced from small to large to form vacuum, liquid is sucked into the piston containing cavity again through a pipeline of the piston, the next pumping process is carried out, and the piston containing cavity is matched with the bullseye bearings to drive the piston to reciprocate in the piston containing cavity on the pump body along with the rotation of the annular ramp, so that the repeated pumping of oil is realized.

In a second embodiment, a hydraulic high-pressure pump as shown in fig. 1 and 3 includes:

The spindle 3 is provided with a driving disc 4 which can coaxially rotate, the driving disc 4 is positioned between a first bearing 9 and a second bearing 10, an annular ramp 5 is arranged on the end face of the driving disc 4, the annular ramp 5 is provided with five groups of continuous slopes which are high and low, the continuous slopes which are high and low are formed in a closed loop, namely, the annular ramp in the embodiment is provided with ten slopes which are protruded upwards and ten slopes which are recessed downwards, the protruded slopes and the recessed slopes are arranged at intervals, and the shape of the annular ramp 5 is a central symmetrical graph.

when the slope surfaces of the two downward depressions of the annular ramp move against to be abutted against the two bullseye bearings, the volume of the cavity is reduced from large, the piston containing cavity is reduced from small to large to form vacuum, liquid is sucked into the piston containing cavity again through a pipeline of the piston, the next pumping process is carried out, and the piston containing cavity is matched with the bullseye bearings to drive the piston to reciprocate in the piston containing cavity on the pump body along with the rotation of the annular ramp, so that the repeated pumping of oil is realized. Compared with the first embodiment, the annular ramp has denser concave-convex slope surfaces, and the reciprocating period of the piston is short, so that the pump body is higher in efficiency.

The above embodiments are not intended to limit the present utility model, and the present utility model is not limited to the above examples, but is also intended to be limited to the following claims.

Claims

1. A hydraulically driven high pressure pump, comprising:

the device comprises a pump body (1), wherein a cavity (2) is arranged in the pump body (1);

the main shaft (3) is rotatably assembled in the cavity (2), a driving disc (4) capable of coaxially rotating is arranged on the main shaft (3), and an annular ramp (5) is arranged on the end face of the driving disc (4);

the piston (6) is movably assembled in a piston containing cavity (8) on the pump body (1), and a bull's eye bearing (7) is arranged at the end part of the piston (6);

the bullseye bearing (7) is abutted with the annular ramp (5) so as to be suitable for driving the piston (6) to displace in a piston accommodating cavity (8) on the pump body (1) when the driving disc (4) rotates.

2. The hydraulically driven high pressure pump of claim 1, wherein: the main shaft (3) is rotatably assembled in the cavity (2) through a first bearing (9) and a second bearing (10) on the pump body (1), the first bearing (9) is installed in the pump body (1) on one side, close to the power source, of the main shaft (3), and the second bearing (10) is installed in the pump body (1) and connected to the shaft end of the main shaft (3).

3. The hydraulically driven high pressure pump of claim 1, wherein: the annular ramp (5) is provided with at least two groups of high-low fluctuation continuous slopes, the high-low fluctuation continuous slopes are formed in a closed loop, and the shape of the annular ramp (5) is a central symmetrical pattern.

4. The hydraulically driven high pressure pump of claim 1, wherein: the pump body (1) is provided with a low-pressure oil suction port (11) and a high-pressure oil discharge port (12), the low-pressure oil suction port (11) is communicated with the cavity (2), the high-pressure oil discharge port (12) is communicated with the piston containing cavity (8), and an oil outlet valve (13) is arranged between the high-pressure oil discharge port (12) and the piston containing cavity (8).

5. The hydraulically driven high pressure pump of claim 1, wherein: the number of the piston containing cavities (8) on the pump body (1) is two, and each piston containing cavity (8) is assembled in the corresponding piston containing cavity (8) through a spring (14).