CN219081814U

CN219081814U - Closed pump displacement control device

Info

Publication number: CN219081814U
Application number: CN202222904210.6U
Authority: CN
Inventors: 贺晓娟; 李孙策; 李希斌; 汤志斌; 李振品
Original assignee: Heitek Power Co ltd
Current assignee: Heitek Power Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-05-26
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a closed pump discharge capacity controlling means, which comprises an outer shell, cradle and dabber, set up the piston in the shell, the wobbling setting of cradle is on the piston, the rotatable one end of dabber stretches into the shell inside and runs through the piston setting, form the regulation chamber in the piston, adjust the intracavity and set up elastic adjustment subassembly, elastic adjustment subassembly has the piston connection structure of connecting the piston and the dabber connection structure of connecting the dabber, rotate the dabber, drive the piston and remove in the shell through elastic adjustment subassembly, thereby adjust the rocker angle of cradle on the piston, through setting up rotatable structure between dabber and the shell, be threaded connection structure between dabber and the inner wall of shell, through selecting into or unscrewing the dabber, make the dabber can drive the inside piston assembly of shell and remove in the shell inside, and at the in-process that piston assembly removed, the elastic adjustment subassembly in the regulation chamber drives the cradle, make the rocker angle position of cradle on the piston change, thereby control rocker angle, make flow output change.

Description

Closed pump displacement control device

Technical Field

The utility model relates to the field of closed pumps, in particular to a closed pump displacement control device.

Background

The opening of the closed pump A, B can be mutually an input and an output, so that the characteristics of adjustable input and output can be met, the requirement of idle speed zero displacement of the closed pump can be met, and a control structure capable of changing the swing angle of a cradle and keeping zero position is needed.

Disclosure of Invention

In view of this, the present utility model provides a closed pump displacement control device.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a closed pump discharge capacity controlling means, includes shell, cradle and dabber, set up the piston in the shell, the wobbling setting of cradle is on the piston, the rotatable one end of dabber stretches into the shell inside and runs through the piston setting, form the regulation chamber in the piston, the regulation intracavity sets up elastic adjustment subassembly, elastic adjustment subassembly has the piston connection structure of connecting the piston and the dabber connection structure of connecting the dabber, rotates the dabber drives the piston through elastic adjustment subassembly and removes in the shell to adjust the rocker of cradle on the piston.

Preferably, a mandrel fixing groove and a mandrel connecting hole are formed in the inner wall of the shell, one end of the mandrel extending into the shell extends into the mandrel fixing groove to be connected with the shell, a thread part corresponding to the mandrel connecting hole is arranged on the mandrel, and the mandrel is in threaded connection with the mandrel connecting hole through the thread part.

Preferably, the elastic adjusting assembly comprises a left elastic unit and a right elastic unit, the left elastic unit and the right elastic unit are symmetrically arranged in an adjusting cavity, the adjusting cavity of the piston is provided with a left adjusting part and a right adjusting part corresponding to the left elastic unit and the right elastic unit, the left elastic unit is arranged in the left adjusting part, the right elastic unit is arranged in the right adjusting part, and the left elastic unit and the right elastic unit are respectively arranged at two ends of the mandrel extending into the adjusting cavity.

Preferably, the left elastic unit is composed of an adjusting spring set, a spring seat, a limiting retainer ring and a clamping ring, the spring seat is correspondingly arranged on two sides in the left adjusting part, the adjusting spring set is arranged between the spring seats, the spring seats are respectively provided with a corresponding mandrel connecting hole, and the mandrels penetrate through the mandrel connecting holes to be connected with the spring seats.

Preferably, the spring seat comprises a first spring seat and a second spring seat, the limiting retainer ring and the clamping ring are arranged on one side, far away from the second spring seat, of the first spring seat, the limiting retainer ring is arranged on the inner wall of the left adjusting portion, the clamping ring is arranged on one end, penetrating through the first spring seat, of the mandrel, and the limiting retainer ring and the clamping ring are used for limiting and fixing the piston and the first spring seat respectively.

Preferably, the adjusting spring group comprises an outer ring spring and an inner ring spring, the outer ring spring is arranged outside the inner ring spring, and two ends of the outer ring spring and the inner ring spring are propped against the corresponding spring seats.

Preferably, the piston is further provided with a cradle connecting part, a connecting groove is formed in the cradle connecting part, a connecting block is arranged in the connecting groove, a rotating hole is formed in the connecting block, the cradle is provided with a rotating connecting end, and the rotating connecting end stretches into the rotating hole to be connected with the connecting block in a rotating mode.

The utility model has the beneficial effects that: the utility model has simple structure and convenient operation, and by arranging the mandrel and the shell into a rotatable structure, and further arranging the mandrel and the inner wall of the shell into a threaded connection structure, the mandrel can drive the piston assembly in the shell to move in the shell by selecting in or screwing out the mandrel, and in the moving process of the piston assembly, the elastic adjusting assembly in the adjusting cavity drives the cradle, so that the swing angle of the cradle on the piston is changed, and the flow output is changed.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model will be further described with reference to the drawings.

The utility model provides the following technical scheme:

as shown in fig. 1, the utility model discloses a closed pump displacement control device, which comprises a shell 1, a cradle 2 and a mandrel 3, wherein a piston 4 is arranged in the shell 1, the cradle 2 is arranged on the piston 4 in a swinging way, one end of the mandrel 3 rotatably stretches into the shell 1 and penetrates through the piston 4 to be arranged, an adjusting cavity 5 is formed in the piston 4, an elastic adjusting component 6 is arranged in the adjusting cavity 5, the elastic adjusting component 6 is provided with a piston 4 connecting structure connected with the piston 4 and a mandrel 3 connecting structure connected with the mandrel 3, the mandrel 3 is rotated, and the piston 4 is driven to move in the shell 1 through the elastic adjusting component 6, so that the swing angle of the cradle 2 on the piston 4 is adjusted. Specifically, in this design, through setting up rotatable structure between dabber 3 and shell 1, further, be threaded connection structure between dabber 3 and the inner wall of shell 1, through selecting into or unscrewing dabber 3 for dabber 3 can drive the inside piston 4 of shell 1 and remove in shell 1 to at the in-process that piston 4 removed, the elastic adjustment subassembly 6 in the regulation chamber 5 drives cradle 2, makes cradle 2 change in the swing angle position on piston 4, thereby control cradle 2 swing angle, make flow output change.

Further, a mandrel fixing groove 7 and a mandrel connecting hole 8 are formed in the inner wall of the shell 1, one end of the mandrel 3 extending into the shell 1 extends into the mandrel fixing groove 7 to be connected with the shell 1, a threaded portion 9 corresponding to the mandrel connecting hole 8 is arranged on the mandrel 3, external threads are formed in the threaded portion 9, and the mandrel 3 is in threaded connection with the mandrel connecting hole 8 through the threaded portion 9. Specifically, in this embodiment, the spindle 3 is connected with the spindle connection hole 8 on the inner wall of the housing 1 through the thread portion 9 in a threaded manner, so that the movement of the spindle 3 inside the housing 1 is controlled, the piston 4 can be displaced according to the movement of the spindle 3, and the threaded connection mode is simple in structure, convenient to operate and process the spindle 3, and capable of effectively controlling the production cost.

Further, the elastic adjusting assembly 6 includes a left elastic unit 10 and a right elastic unit 11, the left elastic unit 10 and the right elastic unit 11 are symmetrically disposed in the adjusting cavity 5, the adjusting cavity 5 of the piston 4 is provided with a left adjusting portion 12 and a right adjusting portion 13 corresponding to the left elastic unit 10 and the right elastic unit 11, the left elastic unit 10 is disposed in the left adjusting portion 12, the right elastic unit 11 is disposed in the right adjusting portion 13, and the left elastic unit 10 and the right elastic unit 11 are respectively disposed at two ends of the mandrel 3 extending into the adjusting cavity 5. Specifically, by arranging the symmetrical left elastic unit 10 and right elastic unit 11, the mandrel 3 can drive and adjust the swing angle of the cradle 2 in the process of rotating and screwing in or unscrewing out the shell 1, so that the adjustment of the swing angle of the cradle 2 is more convenient.

Further, the left elastic unit 10 is composed of an adjusting spring set 14, a spring seat 15, a limiting retainer 16 and a retainer ring 17, the two sides of the left adjusting portion 12 are correspondingly arranged, the spring set 14 is arranged between the spring seats 15, the spring seats 15 are respectively provided with a corresponding mandrel connecting hole 8, and the mandrel 3 penetrates through the mandrel connecting holes 8 to be connected with the spring seats 15.

Further, the spring seat 15 includes a first spring seat 18 and a second spring seat 19, the limiting retainer 16 and the snap ring 17 are both disposed on one side of the first spring seat 18 away from the second spring seat 19, the limiting retainer 16 is disposed on the inner wall of the left adjusting portion 12, the snap ring 17 is disposed on one end of the mandrel 3 penetrating through the first spring seat 18, and the limiting retainer 16 and the snap ring 17 are respectively used for limiting and fixing the piston 4 and the first spring seat 18.

Further, the spring set 14 includes an outer ring spring 20 and an inner ring spring 21, the outer ring spring 20 is disposed outside the inner ring spring 21, and both ends of the outer ring spring 20 and the inner ring spring 21 abut against the corresponding spring seats 15. Specifically, through setting up spacing retaining ring 16 and snap ring 17 and spacing spring holder 15 and the position of piston 4 on dabber 3, avoid dabber 3 rotation in-process, piston 4 removes along dabber 3 to lead to unable compression adjustment to the elastic adjustment subassembly 6 in the piston 4.

Further, the piston 4 further has a cradle connecting portion 22, a connecting groove 23 is provided on the cradle connecting portion 22, a connecting block 24 is provided in the connecting groove 23, a rotation hole 25 is provided on the connecting block 24, the cradle 2 has a rotation connecting end 26, and the rotation connecting end 26 extends into the rotation hole 25 to be connected with the connecting block 24 in a rotation manner. Specifically, the rotating connecting end 26 extends into the rotating hole 25 to be connected with the connecting block 24 in a rotating way, so that the cradle 2 can swing freely by taking the rotating connecting end 26 as an axis.

The working principle of the design is as follows: when the cradle 2 deflects clockwise, the rotatable mandrel 3 rotates inwards relative to the shell 1, at the moment, the mandrel 3 drives the spring seat 15 to move, springs at two sides are forced to compress under the limit of the check ring, a leftward spring force is generated, the spring force drives the piston 4 to move leftwards, the piston 4 drives the connecting block 24, and the connecting block 24 drives the cradle 2 to rotate anticlockwise around the swing center to return. Similarly, when the cradle 2 deflects anticlockwise, the rotatable mandrel 3 outwards returns the cradle 2 to a zero swing angle, and the mandrel 3 position is fixed by screwing the nut.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a closed pump discharge capacity controlling means, includes shell, cradle and dabber, set up the piston in the shell, the setting of cradle wobbling is on the piston, its characterized in that: the one end rotatable of dabber stretches into inside the shell and runs through the piston setting, form the regulation chamber in the piston, the regulation intracavity sets up elasticity adjusting part, elasticity adjusting part has the piston connection structure of connecting the piston and the dabber connection structure of connecting the dabber, rotates the dabber drives the piston and removes in the shell through elasticity adjusting part to the swing angle of regulation cradle on the piston.

2. The closed pump displacement control device of claim 1, wherein: the inner wall of the shell is provided with a mandrel fixing groove and a mandrel connecting hole, one end of the mandrel extending into the shell extends into the mandrel fixing groove to be connected with the shell, the mandrel is provided with a thread part corresponding to the mandrel connecting hole, and the mandrel is in threaded connection with the mandrel connecting hole through the thread part.

3. The closed pump displacement control device of claim 1, wherein: the elastic adjusting assembly comprises a left elastic unit and a right elastic unit, the left elastic unit and the right elastic unit are symmetrically arranged in an adjusting cavity, the adjusting cavity of the piston is provided with a left adjusting part and a right adjusting part corresponding to the left elastic unit and the right elastic unit, the left elastic unit is arranged in the left adjusting part, the right elastic unit is arranged in the right adjusting part, and the left elastic unit and the right elastic unit are respectively arranged at two ends of the mandrel extending into the adjusting cavity.

4. A closed pump displacement control device as claimed in claim 3, wherein: the left elastic unit consists of an adjusting spring group, a spring seat, a limiting retainer ring and a retainer ring, wherein the spring seat is correspondingly arranged on two sides in the left adjusting part, the adjusting spring group is arranged between the spring seats, the spring seats are respectively provided with a corresponding mandrel connecting hole, and the mandrels penetrate through the mandrel connecting holes and are connected with the spring seats.

5. The closed pump displacement control device of claim 4, wherein: the spring holder includes first spring holder and second spring holder, spacing retaining ring and snap ring all set up in one side that the second spring holder was kept away from to first spring holder, spacing retaining ring sets up on the inner wall of left regulation portion, the snap ring sets up on the dabber passes the one end of first spring holder, spacing retaining ring and snap ring carry out spacing fixedly to piston and first spring holder respectively.

6. The closed pump displacement control device of claim 4, wherein: the adjusting spring group comprises an outer ring spring and an inner ring spring, the outer ring spring is arranged outside the inner ring spring, and two ends of the outer ring spring and the inner ring spring are propped against corresponding spring seats.

7. A closed pump displacement control device as claimed in claim 3, wherein: the piston is further provided with a cradle connecting part, a connecting groove is formed in the cradle connecting part, a connecting block is arranged in the connecting groove, a rotating hole is formed in the connecting block, the cradle is provided with a rotating connecting end, and the rotating connecting end stretches into the rotating hole to be connected with the connecting block in a rotating mode.