Cylinder body of hydraulic variable plunger pump

Abstract

The utility model discloses a hydraulic variable displacement piston pump cylinder body which comprises a variable displacement piston pump, a cylinder body is installed inside the variable displacement piston pump, installation threads are arranged outside the cylinder body, the installation threads are connected with the inside of the variable displacement piston pump, a liquid throwing assembly is installed inside the cylinder body, and the liquid throwing assembly is driven by a transmission shaft. A cylinder cover is mounted at the upper end of the cylinder body, a bottom cover is mounted at the lower end of the cylinder body, a first sealing ring is mounted between the cylinder cover and the upper end of the cylinder body, and a second sealing ring is mounted between the bottom cover and the lower end of the cylinder body, so that the cylinder body and the variable plunger pump are convenient to mount and dismount. And liquid and oil liquid can be fully thrown to all corners through the liquid throwing assembly, so that the interior of the cylinder body can be lubricated with a small amount of oil liquid, and the device can directly throw cleaning liquid to places which cannot be cleaned at ordinary times when cleaning the cylinder body.

Description

Technical Field

[0001] The utility model relates to the field of variable plunger pumps, in particular to a hydraulic variable plunger pump cylinder. Background Art

[0002] In the hydraulic system, the variable piston pump is an important device. It can rely on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve oil suction and oil pressure.

[0003] During the long-term oil suction and oil compression process of the existing variable piston pump, part of the oil inside the cylinder body cannot be discharged, which will cause the accumulation of oil and dirt, and the existing hydraulic variable piston pump cylinder body is also relatively complicated to disassemble. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic variable plunger pump cylinder to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a hydraulic variable piston pump cylinder, including a variable piston pump, a cylinder body is installed inside the variable piston pump, a mounting thread is provided on the outside of the cylinder body, the mounting thread is connected to the inside of the variable piston pump, a liquid-throwing assembly is installed inside the cylinder body, and the liquid-throwing assembly is driven by a transmission shaft, a cylinder head is installed at the upper end of the cylinder body, a bottom cover is installed at the lower end of the cylinder body, a first sealing ring is installed between the cylinder head and the upper end of the cylinder body, and a second sealing ring is installed between the bottom cover and the lower end of the cylinder body.

[0006] Preferably, the liquid-swinging assembly includes a bearing and a liquid-swinging rod, the outer wall of the bearing is connected to the inner wall of the cylinder body, the liquid-swinging rod is installed on the upper end of the bearing, and a transmission tooth is installed on the inner ring wall of the bearing, and the transmission tooth is connected to the transmission shaft.

[0007] Preferably, the liquid-swinging rods are installed on the upper base surface of the bearing at non-equidistant intervals.

[0008] Preferably, the upper base surface and the lower base surface of the cylinder body are respectively provided with connecting grooves, the bottom surface of the cylinder cover and the upper base surface of the bottom cover are respectively installed with mounting rings, the mounting rings are connected to the connecting grooves, and the first sealing ring and the second sealing ring are respectively installed inside the connecting grooves at both ends of the cylinder body.

[0009] Preferably, a mounting hole is provided in the middle of the cylinder head, a transmission shaft is installed inside the mounting hole, and a limiting hole is provided in the middle of the bottom cover, a variable head is installed in the limiting hole.

[0010] Preferably, the first sealing ring and the second sealing ring are made of rubber.

[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0012] First, it is convenient for the installation and disassembly of the cylinder and the variable piston pump;

[0013] Second, the device can fully throw liquid and oil to every corner through the liquid throwing component, so that a small amount of oil can be used to lubricate the inside of the cylinder body, and the device can also directly throw the cleaning liquid to places that cannot be cleaned normally when cleaning the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] In the attached picture:

[0016] Figure 1 This is a schematic diagram of the internal structure of the variable displacement plunger pump of the utility model;

[0017] Figure 2 This is a schematic diagram of the cylinder shaft side structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cylinder body split structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the liquid-throwing assembly and the cylinder body of the utility model;

[0020] Among them: 1. variable piston pump; 11. transmission shaft; 12. variable head; 2. cylinder body; 21. mounting thread; 22. connecting groove; 3. liquid-throwing assembly; 31. bearing; 32. liquid-throwing rod; 33. transmission gear; 4. cylinder head; 41. mounting hole; 5. bottom cover; 51. limit hole; 6. first sealing ring; 7. second sealing ring; 8. mounting ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a technical solution: a hydraulic variable piston pump cylinder, including a variable piston pump 1, a cylinder 2 is installed inside the variable piston pump 1, a mounting thread 21 is provided outside the cylinder 2, the mounting thread 21 is connected to the inside of the variable piston pump 1, a liquid-spinning assembly 3 is installed inside the cylinder 2, the liquid-spinning assembly 3 is driven by a transmission shaft 11, a cylinder head 4 is installed at the upper end of the cylinder 2, a bottom cover 5 is installed at the lower end of the cylinder 2, a first sealing ring 6 is installed between the cylinder head 4 and the upper end of the cylinder 2, and a second sealing ring 6 is installed between the bottom cover 5 and the lower end of the cylinder 2. Sealing ring 7, so that when the device is in use, the cylinder body 2 of the device is first connected to the inside of the variable piston pump 1, so that when the device is in use, the liquid and oil can be fully thrown to every corner through the liquid throwing component 3 inside the cylinder body 2, so that a small amount of oil can be used to lubricate the inside of the cylinder body 2, and the device can also directly throw the cleaning liquid to the places that cannot be cleaned normally when cleaning the cylinder body 2, and the cylinder head 4 and the bottom cover 5 are used to assemble the entire cylinder body 2, and the first sealing ring 6 and the second sealing ring 7 are for improving the sealing of the connection.

[0023] In this embodiment, specifically, the liquid-swinging assembly 3 includes a bearing 31 and a liquid-swinging rod 32. The outer wall of the bearing 31 is connected to the inner wall of the cylinder body 2. The liquid-swinging rod 32 is installed on the upper end of the bearing 31. A transmission tooth 33 is installed on the inner ring wall of the bearing 31. The transmission tooth 33 is connected to the transmission shaft 11. The bearing 31 is driven by the transmission shaft 11, so that the bearing 31 drives the liquid-swinging rod 32 on the bearing 31 when it rotates, and the liquid can be thrown to different positions through the liquid-swinging rod 32, thereby achieving the effect of cleaning and lubrication.

[0024] In this embodiment, the liquid-spinning rod 32 is specifically installed at non-equidistant intervals on the upper surface of the bearing 31. The liquid-spinning rod 32 is non-equidistantly arranged on the bearing 31, so that the liquid-spinning rod 32 can spin the liquid to different positions when spinning the liquid, thereby achieving the effect of cleaning and lubricating.

[0025] In this embodiment, specifically, the upper base surface and the lower base surface of the cylinder body 2 are respectively provided with connecting grooves 22, the bottom surface of the cylinder head 4 and the upper base surface of the bottom cover 5 are respectively installed with mounting rings 8, and the mounting rings 8 are connected to the connecting grooves 22, and the first sealing ring 6 and the second sealing ring 7 are respectively installed inside the connecting grooves 22 at both ends of the cylinder body 2. When in use, the first sealing ring 6 can increase the sealing performance between the cylinder head 4 and the upper end of the cylinder body 2, while the second sealing ring 7 can improve the sealing performance between the bottom cover 5 and the bottom of the cylinder body when in use.

[0026] In the present embodiment, specifically, a mounting hole 41 is opened in the middle of the cylinder head 4, a transmission shaft 11 is installed inside the mounting hole 41, a limiting hole 51 is opened in the middle of the bottom cover 5, a variable head 12 is installed in the limiting hole 51, the mounting hole 41 is used to install the transmission shaft 11, so that the device can ensure that the transmission shaft 11 can act on the internal components of the cylinder body 2 when in use, and the limiting hole 51 is used to limit the variable head 12.

[0027] In this embodiment, specifically, the first sealing ring 6 and the second sealing ring 7 are made of rubber material, which can provide better sealing performance and increase the friction between the joints.

[0028] Working principle: When the device is in use, the cylinder body 2 of the device is first connected to the inside of the variable piston pump 1, so that when the device is in use, the liquid and oil can be fully thrown to every corner through the liquid throwing component 3 inside the cylinder body 2, so that a small amount of oil can be used to lubricate the inside of the cylinder body 2, and the device can also directly throw the cleaning liquid to places that cannot be cleaned normally when cleaning the cylinder body 2. The specific working principle is that the bearing 31 is driven by the transmission shaft 11, so that the bearing 31 drives the liquid throwing rod 32 on the bearing 31 when rotating, and because the liquid throwing rod 32 is non-equidistantly arranged on the bearing 31, the liquid throwing rod 32 can throw the liquid to different positions when throwing the liquid, thereby achieving the effect of cleaning and lubrication.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic variable piston pump cylinder, comprising a variable piston pump (1), characterized in that: The variable piston pump (1) has a cylinder body (2) installed inside, the cylinder body (2) has an installation thread (21) outside, the installation thread (21) is connected to the inside of the variable piston pump (1), the cylinder body (2) has a liquid-spinning assembly (3) installed inside, the liquid-spinning assembly (3) is driven by a transmission shaft (11), a cylinder head (4) is installed at the upper end of the cylinder body (2), a bottom cover (5) is installed at the lower end of the cylinder body (2), a first sealing ring (6) is installed between the cylinder head (4) and the upper end of the cylinder body (2), and a second sealing ring (7) is installed between the bottom cover (5) and the lower end of the cylinder body (2).

2. The hydraulic variable piston pump cylinder according to claim 1, characterized in that: The liquid-swinging assembly (3) comprises a bearing (31) and a liquid-swinging rod (32); the outer wall of the bearing (31) is connected to the inner wall of the cylinder body (2); the upper end of the bearing (31) is provided with the liquid-swinging rod (32); the inner ring wall of the bearing (31) is provided with a transmission tooth (33); and the transmission tooth (33) is connected to the transmission shaft (11).

3. The hydraulic variable piston pump cylinder according to claim 2, characterized in that: The liquid-swinging rods (32) are installed at non-equidistant intervals on the upper base surface of the bearing (31).

4. The hydraulic variable piston pump cylinder according to claim 1, characterized in that: The upper base surface and the lower base surface of the cylinder body (2) are respectively provided with connecting grooves (22); the bottom surface of the cylinder head (4) and the upper base surface of the bottom cover (5) are respectively provided with mounting rings (8); the mounting rings (8) are connected to the connecting grooves (22); and the first sealing ring (6) and the second sealing ring (7) are respectively provided inside the connecting grooves (22) at both ends of the cylinder body (2).

5. The hydraulic variable piston pump cylinder according to claim 1, characterized in that: A mounting hole (41) is provided in the middle of the cylinder cover (4), a transmission shaft (11) is installed inside the mounting hole (41), and a limiting hole (51) is provided in the middle of the bottom cover (5), a variable head (12) is installed in the limiting hole (51).

6. The hydraulic variable piston pump cylinder according to claim 1, characterized in that: The first sealing ring (6) and the second sealing ring (7) are made of rubber material.

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