Reversible quantitative plunger pump structure

Abstract

A reversible quantitative plunger pump structure relates to the technical field of plunger pump devices and comprises a plunger pump main body, a swing seat is arranged in the plunger pump main body, a swing is mounted in the swing seat, one side of the bottom of the swing and a variable piston are mounted together through a shifting fork, the shifting fork is cuboid-shaped, a mounting groove is formed in the shifting fork, and the plunger pump main body is provided with a plunger. The mounting groove is hinged and matched with one end of the connecting shaft, and the other end of the connecting shaft is matched with the bottom of the swinging seat. According to the plunger pump, the rotating direction of the plunger pump can be changed by changing the assembling direction of the shifting fork, and the plunger pump is more convenient to produce.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pump devices, in particular to a reversible fixed-displacement plunger pump structure. Background Art

[0002] A plunger pump is a pump that relies on the reciprocating motion of a plunger in a cylinder block to change the volume of a sealed cavity to achieve oil suction or oil discharge.

[0003] For the existing plunger pump to reverse, it is usually achieved by adjusting the oil inlet and outlet ports of the plunger pump and the angles of the distribution disk and the swash plate for the variable displacement plunger pump to reverse. This is too troublesome and inconvenient for production. Summary of the Utility Model

[0004] The utility model provides a reversible fixed-displacement plunger pump structure.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A reversible fixed-displacement plunger pump structure includes a plunger pump main body. A swing seat is arranged inside the plunger pump main body. A swing is installed inside the swing seat. One side of the bottom of the swing is installed together with a variable piston through a fork. The fork is rectangular. An installation groove is opened on the fork. The installation groove is hinged and connected with one end of a connecting shaft. The other end of the connecting shaft is matched with the bottom of the swing seat.

[0007] A further preferred solution of the utility model: The cross-section of the installation groove is circular, and the position of the installation groove is on one side of the fork. The distances from both sides of the installation groove to both ends of the fork are not equal.

[0008] The utility model has the following beneficial effects:

[0009] By changing the assembly direction of the fork, the utility model can change the rotation direction of the plunger pump, making production more convenient. Brief Description of the Drawings

[0010] Figure 1 It is the front view structural schematic diagram of the utility model;

[0011] Figure 2 It is the A-A sectional view structural schematic diagram of the utility model;

[0012] Figure 3 It is the three-dimensional structural schematic diagram of the plunger of the utility model;

[0013] In the figure: 1 plunger pump main body, 2 swing seat, 3 connecting shaft, 4 variable piston, 5 fork, 6 installation groove. Detailed Description of the Embodiment

[0014] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0015] According to Figures 1-3 As shown, a reversible quantitative plunger pump structure includes a plunger pump body 1. A swing seat 2 is arranged inside the plunger pump body 1. A swing is installed inside the swing seat 2. One side of the bottom of the swing is installed together with a variable piston 4 through a fork 5. The fork 5 is in the shape of a cuboid. An installation groove 6 is formed on the fork 5. The installation groove 6 is hingedly and cooperatively connected with one end of a connecting shaft 3. The other end of the connecting shaft 3 is matched with the bottom of the swing seat 2.

[0016] The cross-section of the installation groove 6 is circular, and the position of the installation groove 6 is on one side of the fork. The distances from both sides of the installation groove 6 to both ends of the fork 5 are not equal. Such a setting can realize the change of the rotation direction of the plunger pump by changing the installation of the installation groove 6.

[0017] Working principle: The rotation direction of the plunger pump is changed by changing the installation of the fork 5. When the side of the installation groove 6 on the fork 5 with a shorter distance from the edge end of the fork faces downward, the fork 5 is connected to the variable piston 4. At this time, the rotation direction of the plunger 5 pump is forward. When the side of the installation groove 6 on the fork 5 with a longer distance from the edge end of the fork faces downward, the fork 5 is connected to the variable piston 4. At this time, the rotation direction of the plunger 5 pump is reverse.

[0018] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A reversible quantitative plunger pump structure, characterized in that: The invention comprises a plunger pump body (1), wherein a swing seat (2) is arranged in the plunger pump body (1), a swing is installed in the swing seat (2), one side of the bottom of the swing is installed together with a variable piston (4) through a shift fork (5), the shift fork (5) is in a rectangular shape, a mounting groove (6) is provided on the shift fork (5), the mounting groove (6) is hingedly connected to one end of a connecting shaft (3), and the other end of the connecting shaft (3) is matched with the bottom of the swing seat (2).

2. A reversible quantitative plunger pump structure according to claim 1, characterized in that: The cross section of the installation groove (6) is circular, and the installation groove (6) is located on one side of the shift fork, and the distances between the two sides of the installation groove (6) and the two ends of the shift fork (5) are unequal.

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