Piston assembly applied to swash plate type plunger water pump

Abstract

The utility model discloses a piston assembly applied in a swash plate type plunger water pump, which comprises a stator assembly and a rotor assembly, a swash plate structure is arranged in the stator assembly, a plurality of column holes are arranged in the rotor assembly, and plungers are movably arranged in the column holes. The tail ends of the multiple plungers are provided with reciprocating linkage structures capable of being matched with the swash plate structure to control the multiple plungers to reciprocate in turn, the water pumping and drainage efficiency is improved, the range extending holes and the magnetic piston plates are arranged, the interaction between the magnetic poles of the rotating pieces and the magnetic piston plates is changed, and therefore the stroke of the plungers is effectively adjusted. In the water pumping and draining process, the stroke of the plunger can be flexibly controlled according to actual requirements, the water pumping and draining efficiency of the water pump is improved, the whole piston assembly is reasonable in structural design, all components are tightly matched, common mechanical and electrical components are adopted, the production cost and maintenance difficulty are reduced, and the service life of the water pump is prolonged. The reliability and the stability of the water pump are improved.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and in particular to a piston assembly used in a swashplate plunger water pump. Background Technology

[0002] In existing swashplate plunger pumps, the piston assembly design often suffers from low pumping and drainage efficiency and insufficient stroke control flexibility. Traditional piston assemblies have a relatively fixed reciprocating stroke during operation, making it difficult to effectively adjust according to actual needs. This results in the pump's performance not being fully utilized in different working scenarios. For example, in applications with high flow and pressure requirements, existing pumps may not meet the demands; while in applications with lower energy consumption requirements, they cannot effectively reduce energy consumption. Therefore, it is necessary to improve the piston assembly of swashplate plunger pumps to enhance their pumping and drainage efficiency and flexibility.

[0003] Therefore, the existing water pump industry needs further improvement. Utility Model Content

[0004] The purpose of this invention is to provide a piston assembly for use in a swashplate plunger pump, in order to solve the problems of low pumping and drainage efficiency and insufficient stroke control in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] A piston assembly for use in a swashplate plunger pump includes a stator assembly and a rotor assembly. The stator assembly has a swashplate structure, and the rotor assembly has multiple plunger holes. A plunger is movably disposed within each plunger hole. The tail ends of the multiple plungers are provided with a reciprocating linkage structure that cooperates with the swashplate structure to control the alternating reciprocating motion of the multiple plungers. Each plunger has a stroke-extending orifice, and a magnetic piston plate is movably disposed within the stroke-extending orifice. A circular cavity is provided outside the stroke-extending orifice, and a forward / reverse motor is installed within the circular cavity. A rotating component is rotatably disposed within the circular cavity, and the rotating component is connected to the output end of the forward / reverse motor. The rotating component has a north pole on one side and a south pole on the other side.

[0007] Furthermore, the stator assembly includes a valve body housing and a front cover disposed at the front end of the valve body housing.

[0008] Furthermore, the rotor assembly includes an active rotating shaft mounted on the front cover, a rotor rotatably disposed within the valve body housing, and the active rotating shaft and the rotor being fixedly connected.

[0009] Furthermore, the plurality of said cylindrical holes are evenly distributed around the central axis of the rotor.

[0010] Furthermore, the compound linkage structure includes a universal joint portion disposed at the tail of the rotor, a swing swashplate is hinged to the universal joint portion, and a plurality of synchronization holes are disposed on the swing swashplate. The number of synchronization holes is the same as the number of plungers and they are aligned one by one. The tail of each plunger passes through a corresponding synchronization hole and is provided with a limit ring. The limit ring moves in a circular motion against the surface of the swashplate structure and controls the reciprocating motion of a corresponding plunger.

[0011] Furthermore, it also includes a controller, which is communicatively connected to the forward and reverse motor.

[0012] In summary, the advantages of this utility model over the prior art are:

[0013] This invention addresses the shortcomings of existing water pump technologies. Through its structural design, it offers the following advantages, improving pumping and drainage efficiency: By incorporating a stroke-extending orifice and a magnetic piston plate, and utilizing a reversible motor to drive the rotating component, the interaction between the magnetic poles of the rotating component and the magnetic piston plate is altered, thereby effectively adjusting the plunger stroke. During pumping and drainage, the plunger stroke can be flexibly controlled according to actual needs, improving the pump's efficiency. The entire piston assembly has a rational structural design, with tight fit between components, and employs common mechanical and electrical parts, reducing production costs and maintenance difficulty, and enhancing the pump's reliability and stability. Attached Figure Description

[0014] Fig. 1 This is one of the cross-sectional views of this utility model;

[0015] Fig. 2 This is the second sectional view of the present invention. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figs. 1-2This utility model provides a piston assembly for use in a swashplate plunger pump, including a stator assembly 1 and a rotor assembly 2. The stator assembly 1 is provided with a swashplate structure 3. The rotor assembly 2 is provided with multiple plunger holes 4. A plunger 5 is movably disposed in each plunger hole 4. The tail ends of the multiple plungers 5 are provided with a reciprocating linkage structure 6 that can cooperate with the swashplate structure 3 to control the multiple plungers 5 to reciprocate in turn. An extension hole 7 is provided in each plunger 5. A magnetic piston plate 8 is movably disposed in the extension hole 7. A circular cavity 9 is provided outside the extension hole 7. A forward and reverse motor 10 is installed in the circular cavity 9. A rotating component 11 is rotatably disposed in the circular cavity 9. The rotating component 11 is connected to the output end of the forward and reverse motor 10. The rotating component 11 is provided with an N pole on one side and an S pole on the other side.

[0018] Power input and rotor rotation: The active rotating shaft 201 drives the rotor 202 to rotate inside the valve body shell 101. Because multiple cylindrical holes 4 are evenly distributed around the central axis of the rotor 202, the cylindrical holes 4 also rotate with the rotor 202.

[0019] Reciprocating motion of the plunger: When the rotor 202 rotates, its universal joint 601 at the tail drives the swashplate 602 to move. Since the tail of the plunger 5 passes through the synchronization hole 603 on the swashplate 602, and the limiting ring 604 moves circumferentially against the surface of the swashplate structure 3, the plunger 5 reciprocates alternately within the plunger hole 4 under the cooperation of the swashplate structure 3 and the reciprocating linkage structure 6. When the plunger 5 moves closer to the swashplate structure 3, the space inside the plunger hole 4 increases, allowing water to enter; when the plunger 5 moves away from the swashplate structure 3, the space inside the plunger hole 4 decreases, allowing water to drain.

[0020] The stroke extension effect of the magnetic piston plate: The forward and reverse motor 10 drives the rotating part 11 to rotate in the circular cavity 9. The N pole and S pole of the rotating part 11 alternately approach the magnetic piston plate 8. Through the action of magnetic field force, the magnetic piston plate 8 is pushed to move in the stroke extension hole 7, thereby increasing the effective stroke of the plunger 5 and thus improving the efficiency of pumping and draining water.

[0021] Water pumping and drainage control: The water inlet end on one side of the stator assembly 1 and the water outlet end on the other side can alternately connect to one of the column holes 4. When the column hole 4 rotates with the rotor 202 to connect with the water inlet end, the plunger 5 moves backward, and water is pumped into the column hole 4 from the water inlet end; when the column hole 4 rotates to connect with the water outlet end, the plunger 5 moves forward, and the water in the column hole 4 is discharged from the water outlet end.

[0022] Motor control: The controller is connected to the forward and reverse motor 10. The controller can control the rotation direction and speed of the forward and reverse motor 10 according to actual needs, thereby precisely controlling the rotation of the rotating part 11 and the movement of the magnetic piston plate 8, realizing flexible adjustment of the stroke of the plunger 5, and finally achieving precise control of the water pump's pumping and drainage flow rate and pressure.

[0023] The stator assembly 1 of this utility model includes a valve body housing 101 and a front cover 102 disposed at the front end of the valve body housing 101.

[0024] The rotor assembly 2 of this utility model includes an active rotating shaft 201 installed on the front cover 102, and a rotor 202 rotatably disposed inside the valve body housing 101. The active rotating shaft 201 and the rotor 202 are fixedly connected.

[0025] In this invention, multiple cylindrical holes 4 are evenly distributed around the central axis of the rotor 202.

[0026] The compound linkage structure 6 of this utility model includes a universal hinge portion 601 disposed at the tail of the rotor 202. A swing swashplate 602 is hinged to the universal hinge portion 601. The swing swashplate 602 is provided with a plurality of synchronization holes 603. The number of synchronization holes 603 is the same as the number of plungers 5 and they are aligned one by one. The tail of each plunger 5 passes through a corresponding synchronization hole 603 and is provided with a limit ring 604. The limit ring 604 is close to the surface of the swashplate structure 3 and moves in a circular motion to control the reciprocating motion of a corresponding plunger 5.

[0027] This utility model also includes a controller, which is communicatively connected to the forward and reverse motor 10. The basic principles and main features of this utility model, as well as its advantages, have been shown and described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A piston assembly used in a swashplate plunger pump, comprising a stator assembly (1) and a rotor assembly (2), wherein the stator assembly (1) is provided with a swashplate structure (3), characterized in that: The rotor assembly (2) is provided with multiple cylindrical holes (4), and a plunger (5) is movably disposed in the cylindrical holes (4). The tail ends of the multiple plungers (5) are provided with a reciprocating linkage structure (6) that can cooperate with the swashplate structure (3) to control the multiple plungers (5) to move back and forth in turn. An extension hole (7) is provided in the plunger (5), and a magnetic piston plate (8) is movably disposed in the extension hole (7). A circular cavity (9) is provided outside the extension hole (7), and a forward and reverse motor (10) is installed in the circular cavity (9). A rotating component (11) is rotatably disposed in the circular cavity (9). The rotating component (11) is connected to the output end of the forward and reverse motor (10). The rotating component (11) has an N pole on one side and an S pole on the other side.

2. A piston assembly applied in a swashplate plunger pump according to claim 1, characterized in that: The stator assembly (1) includes a valve body housing (101) and a front cover (102) disposed at the front end of the valve body housing (101).

3. A piston assembly applied in a swashplate plunger pump according to claim 2, characterized in that: The rotor assembly (2) includes an active rotating shaft (201) mounted on the front cover (102), and a rotor (202) is rotatably disposed inside the valve body housing (101). The active rotating shaft (201) and the rotor (202) are fixedly connected.

4. A piston assembly applied in a swashplate plunger pump according to claim 3, characterized in that: Multiple cylindrical holes (4) are evenly distributed around the central axis of the rotor (202).

5. A piston assembly applied in a swashplate plunger pump according to claim 4, characterized in that: The compound linkage structure (6) includes a universal hinge part (601) disposed at the tail of the rotor (202). A swing swashplate (602) is hinged on the universal hinge part (601). A plurality of synchronization holes (603) are disposed on the swing swashplate (602). The number of synchronization holes (603) is the same as the number of plungers (5) and they are aligned one by one. The tail of the plunger (5) passes through a corresponding synchronization hole (603) and is provided with a limit ring (604). The limit ring (604) is close to the surface of the swashplate structure (3) and moves in a circular motion to control the reciprocating motion of a corresponding plunger (5).

6. A piston assembly applied in a swashplate plunger pump according to claim 5, characterized in that: It also includes a controller, which is communicatively connected to the forward and reverse motor (10).

7. A piston assembly applied in a swashplate plunger pump according to claim 6, characterized in that: The stator assembly (1) has a water inlet on one side and a drain on the other side, and the water inlet and drain can alternately connect to one of the column holes (4).

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