Power input part structure of plunger pump

Abstract

The utility model relates to the technical field of plunger pumps, in particular to a power input part structure of a plunger pump. The plunger pump comprises a pump body of the plunger pump, a rotating shaft used for driving a plunger of the plunger pump to reciprocate is arranged in the pump body, and one end of the rotating shaft penetrates through the pump body and extends out. The planetary gear pump is characterized in that a planetary gear speed reducer is fixed on the pump body, and the outward extending end of the rotating shaft is connected with the output part of the planetary gear speed reducer. A motor is fixed on the outer side of the planetary gear speed reducer, and the outer end of a motor shaft of the motor is an input part of the planetary gear speed reducer. The structure is low in cost and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, specifically to the structure of the power input part of a plunger pump. Background Technique

[0002] A plunger pump is a pump that relies on rotation to drive a plunger to reciprocate in a cylinder block, causing the volume of the sealed working chamber to change to achieve pumping. The rotating shaft of a plunger pump is generally connected to a motor through a speed reducer to form the power input part of the plunger pump.

[0003] Chinese Utility Model Patent No. 202222201191.0 discloses a large-flow plunger pump, which mainly includes a cylindrical pump body. A rotating shaft and a plunger that is in linkage with the rotating shaft and reciprocates to pump liquid when the rotating shaft rotates are concentrically arranged in the pump body. When this plunger pump is in use, the rotating shaft needs to be connected to the output part of the speed reducer through a coupling, and then the input part of the speed reducer needs to be connected to the motor shaft of the motor through a coupling. A coupling needs to be installed between the motor and the speed reducer, resulting in high costs. At the same time, the coupling takes up space, making the volume of the entire device relatively large. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a structure of the power input part of a plunger pump, which has low cost and small occupied space.

[0005] To solve the above problems, the following technical solutions are provided: +

[0006] The structure of the power input part of the plunger pump of the utility model includes the pump body of the plunger pump. There is a rotating shaft in the pump body for driving the plunger of the plunger pump to reciprocate. One end of the rotating shaft passes through the pump body and extends outwards. The feature is that a planetary gear speed reducer is fixed on the pump body, and the outer extending end of the rotating shaft is connected to the output part of the planetary gear speed reducer. An electric motor is fixed outside the planetary gear speed reducer, and the outer end of the motor shaft of the electric motor is the input part of the planetary gear speed reducer.

[0007] Wherein, one end of the pump body corresponding to the outer extending end of the rotating shaft is open, and one end of the planetary gear speed reducer corresponding to the output part of the planetary gear speed reducer abuts against the periphery of one end of the pump body corresponding to the outer extending end of the rotating shaft, and the two are fixedly connected concentrically.

[0008] The output part of the planetary gear speed reducer is located inside the housing of the planetary gear speed reducer.

[0009] Through holes are evenly distributed along the circumferential direction on one end of the planetary gear speed reducer corresponding to the output part of the planetary gear speed reducer.

[0010] One end of the planetary gear reducer corresponding to the output part of the planetary gear reducer is open. A gear is fixed on the outer end of the motor shaft of the motor. There is a flange around one end of the motor corresponding to the motor shaft. There are threaded holes around one end of the planetary gear reducer corresponding to the input part of the planetary gear reducer. The flange abuts against one end of the planetary gear reducer corresponding to the input part of the planetary gear reducer. The motor is fixedly connected to the planetary gear reducer through the flange and the threaded holes; the gear extends into the planetary gear reducer to serve as the sun gear of the planetary gear reducer, so that the outer end of the motor shaft of the motor is the input part of the planetary gear reducer.

[0011] Adopting the above scheme, the following advantages are achieved:

[0012] Since the planetary gear reducer is fixed on the pump body of the power input part structure of the plunger pump of the present utility model, and the motor is fixed on the outside of the planetary gear reducer, the outer end of the motor shaft of the motor is the input part of the planetary gear reducer. The outer end of the motor shaft of this input part structure is the input part of the planetary gear reducer, so that the motor can be connected to the reducer without installing a coupling, reducing the installation cost. At the same time, without installing a coupling, the volume of the entire equipment is reduced. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the power input part structure of the plunger pump of the present utility model;

[0014] Figure 2 is an exploded schematic diagram of the power input part structure of the plunger pump of the present utility model;

[0015] Figure 3 is a half-sectional schematic diagram of the power input part structure of the plunger pump of the present utility model. Detailed Description of the Invention

[0016] The following further describes the present utility model in detail with reference to the drawings.

[0017] As Figure 1 and Figure 3 shown, the power input part structure of the plunger pump of the present utility model includes the pump body 3 of the plunger pump. There is a rotating shaft 8 in the pump body 3 for driving the plunger of the plunger pump to reciprocate. One end of the rotating shaft 8 passes through the pump body 3 and extends outside. In this embodiment, the structure inside the pump body 3 is the prior art, and reference can be made to the Chinese utility model patent with the application number 2022222011910

[0018] As Figure 1 shown, the planetary gear reducer 2 is fixed on the pump body 3, and the motor 1 is fixed on the outside of the planetary gear reducer 2. The pump body 3, the planetary gear reducer 2 and the motor 1 are coaxially arranged, so that the structure of the entire equipment is compact and the space occupation is reduced.

[0019] As Figure 3 shown, one end of the pump body 3 corresponding to the outer extending end of the rotating shaft 8 is open. One end of the planetary gear reducer 2 corresponding to the output part of the planetary gear reducer 2 abuts against the periphery of one end of the pump body 3 corresponding to the outer extending end of the rotating shaft 8, and the two are concentrically and fixedly connected. In this embodiment, a flange 4 is concentrically arranged at one end of the planetary gear reducer 2 corresponding to the output part of the planetary gear reducer 2. There are threaded holes on one end of the pump body 3 corresponding to the flange 4. The planetary gear reducer 2 is fixedly connected to the pump body 3 through the flange 4, threaded holes and bolts.

[0020] As Figure 3 shown, the output part of the planetary gear reducer 2 is located inside the housing of the planetary gear reducer 2. The outer extending end of the rotating shaft 8 passes through one end of the planetary gear reducer 2 corresponding to the output part of the planetary gear reducer 2 and extends into and is fixedly connected to the output part of the planetary gear reducer 2. There is a bearing 7 between the rotating shaft 8 and the housing of the planetary gear reducer 2.

[0021] As Figure 3 shown, one end of the planetary gear reducer 2 corresponding to the output part of the planetary gear reducer 2 is open. A gear 6 is concentrically and integrally arranged at the outer end of the motor shaft of the motor 1. There is a flange plate 5 around one end of the motor 1 corresponding to the motor shaft. There are threaded holes around one end of the planetary gear reducer 2 corresponding to the input part of the planetary gear reducer 2. The flange plate 5 abuts against one end of the planetary gear reducer 2 corresponding to the output part of the planetary gear reducer 2. Bolts are arranged between the flange plate 5 and the threaded holes, so that the motor 1 and the planetary gear reducer 2 are fixedly connected. The gear 6 extends into the planetary gear reducer 2 to serve as the sun gear of the planetary gear reducer 2, so that the outer end of the motor shaft of the motor 1 is the input part of the planetary gear reducer 2. In this embodiment, one end of the planetary gear reducer 2 corresponding to the output part of the planetary gear reducer 2 is open, which is convenient for the extension and installation of the motor shaft.

[0022] As Figure 3 shown, through holes 9 are evenly distributed along the circumferential direction on one end of the planetary gear reducer 2 corresponding to the output part of the planetary gear reducer 2. The inner cavity of the planetary gear reducer 2 is communicated with the inner cavity of the pump body 3, and the two share a lubricating oil system, reducing the cost.

[0023] The structure of the power input part of the plunger pump of the present utility model includes that the outer end of the motor shaft of the motor 1 is the input part of the planetary gear reducer 2, so that the motor 1 and the reducer can be connected without installing a coupling, reducing the installation cost. At the same time, without installing a coupling, the volume of the whole equipment is reduced.

Claims

1. A plunger pump power input structure, comprising a pump body of the plunger pump, wherein the pump body has a rotating shaft for driving the plunger of the plunger pump to reciprocate, and one end of the rotating shaft passes through the pump body and extends outward; characterized in that: A planetary gear reducer is fixed on the pump body, and the extended end of the rotating shaft is connected to the output part of the planetary gear reducer; a motor is fixed on the outer side of the planetary gear reducer, and the outer end of the motor shaft of the motor is the input part of the planetary gear reducer.

2. The plunger pump power input structure according to claim 1, characterized in that: One end of the pump body corresponding to the extended end of the rotating shaft is open, and one end of the planetary gear reducer corresponding to the output part of the planetary gear reducer is abutted against one end of the pump body corresponding to the extended end of the rotating shaft, and the two are concentrically fixedly connected.

3. The plunger pump power input structure according to claim 2, characterized in that: The output part of the planetary gear reducer is located in the housing of the planetary gear reducer.

4. The plunger pump power input structure according to claim 2, characterized in that: Through holes are evenly distributed along the circumference of one end of the star gear reducer corresponding to the output part of the star gear reducer.

5. The plunger pump power input structure according to claim 1, characterized in that: One end of the star gear reducer corresponding to the output part of the star gear reducer is open, a gear is fixed on the outer end of the motor shaft of the motor, a flange is arranged around the one end of the motor corresponding to the motor shaft, and threaded holes are arranged around the one end of the star gear reducer corresponding to the input part of the star gear reducer, the flange is abutted against the one end of the star gear reducer corresponding to the input part of the star gear reducer, and the motor is fixedly connected to the star gear reducer through the flange and the threaded holes; the gear extends into the star gear reducer as the sun gear of the star gear reducer, so that the outer end of the motor shaft of the motor is the input part of the star gear reducer.

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