Plunger pump assembly

Abstract

The utility model belongs to the technical field of plunger pumps, and particularly relates to a plunger pump assembly which comprises a pump body, the upper surface of the pump body is fixedly communicated with an oil outlet pipe, the bottom of the pump body is fixedly communicated with an oil inlet pipe, and the inner wall of the oil outlet pipe and the inner wall of the oil inlet pipe are both fixedly connected with one-way sealing pieces. The bottom of the pump body is fixedly connected with a driving mechanism, and the surface of the driving mechanism is fixedly connected with a first disc. According to the plunger pump assembly, through cooperation of a first disc, a first rectangular hole, a cylinder, a first limiting ring, a second pump cover, a threaded barrel, a threaded column, a rotating disc, a second bearing, a second disc, a second rectangular hole, a guide column and an inclined hole, a user can rotate the rotating disc to change the distance between the cylinder and a rotating shaft, and the distance between the cylinder and the rotating shaft is changed to change the distance between the cylinder and the rotating shaft. According to the plunger pump assembly, the stroke of the plunger can be changed, and therefore the plunger pump assembly can meet different use requirements.

Description

Technical Field

[0001] This utility model belongs to the field of plunger pump technology, and specifically relates to a plunger pump assembly. Background Technology

[0002] A piston pump is an important component of a hydraulic system. It relies on the reciprocating motion of a piston within a cylinder to change the volume of the sealed working chamber, thus achieving oil suction and pressure. Piston pumps offer advantages such as high rated pressure, compact structure, high efficiency, and convenient flow rate adjustment. However, the piston stroke of a piston pump is determined by the fixed eccentricity of the drive mechanism, making dynamic adjustment impossible according to actual operating conditions. Consequently, when system pressure or flow requirements change, it is necessary to replace the piston pump with one of different specifications, which is not only cumbersome but also costly. Utility Model Content

[0003] The purpose of this invention is to provide a plunger pump assembly that solves the problem that the plunger stroke in a plunger pump cannot be dynamically adjusted according to actual working conditions, thus requiring the replacement of different specifications of plunger pumps to achieve adjustment when system pressure or flow requirements change. This is not only cumbersome to operate, but also costly.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A plunger pump assembly includes a pump body. An oil outlet pipe is fixedly connected to the upper surface of the pump body, and an oil inlet pipe is fixedly connected to the bottom of the pump body. One-way seals are fixedly connected to the inner walls of both the oil outlet pipe and the oil inlet pipe. A drive mechanism is fixedly connected to the bottom of the pump body. A first disc is fixedly connected to the surface of the drive mechanism. A first rectangular hole is formed inside the first disc. A cylinder is fitted into the first rectangular hole. A first limiting ring is fixedly connected to the surface of the cylinder. The upper and lower sides of the first disc are fitted to the surfaces of the first limiting ring. A rectangular ring is fitted to the surface of the cylinder. A plunger is fixedly connected to the right side of the rectangular ring. The plunger's surface... The cylindrical surface is fitted to the inner wall of the pump body. A second limiting ring is fixedly connected to the surface of the cylindrical surface. The upper and lower sides of the rectangular ring are fitted to the surface of the second limiting ring. A second pump cover is fixedly connected to the upper surface of the pump body. A threaded cylinder is fixedly connected to the inner wall of the second pump cover. A threaded column is threadedly connected to the inner wall of the threaded cylinder. A turntable is fixedly connected to the top of the threaded column. A second bearing is fixedly connected to the surface of the threaded column. A second disc is fixedly connected to the surface of the second bearing. A second rectangular hole is opened inside the second disc. A guide post is fixedly connected to the inner wall of the second rectangular hole. An oblique hole is opened inside the cylindrical surface. The inner wall of the oblique hole is fitted to the surface of the guide post.

[0006] The present invention is further configured such that the one-way seal includes a cylinder, a connecting ring, a first spring, a sealing ball, and a sealing ring; the inner walls of the oil outlet pipe and the oil inlet pipe are both fixedly connected to the surface of the cylinder; the surfaces of the connecting ring and the sealing ring are both fixedly connected to the inner wall of the cylinder; the inner wall of the sealing ring is in contact with the surface of the sealing ball; the bottom of the first spring is fixedly connected to the upper surface of the sealing ball; and the surface of the first spring is fixedly connected to the inner wall of the connecting ring.

[0007] The present invention is further configured such that the diameter of the sealing ball is greater than the diameter of the sealing ring, and the diameter of the sealing ball is less than the inner diameter of the cylinder.

[0008] The present invention is further configured such that the driving mechanism includes a first pump cover, a drive motor, a rotating shaft, and a first bearing. The upper surface of the first pump cover is fixedly connected to the bottom of the pump body, the upper surface of the drive motor is fixedly connected to the bottom of the first pump cover, the output end of the drive motor is fixedly connected to the bottom end of the rotating shaft via a coupling, the inner ring of the first bearing and the inner wall of the first disc are both fixedly connected to the surface of the rotating shaft, and the outer ring of the first bearing is fixedly connected to the inner wall of the first pump cover.

[0009] The present invention is further configured such that the included angle between the guide post and the threaded post is 30°, and the included angle between the first disk and the second disk is 30°.

[0010] The present invention is further configured such that a U-shaped plate is fixedly connected to the upper surface of the second pump cover, and trapezoidal blocks are fitted to the inner wall of the U-shaped plate and the upper surface of the second pump cover. A groove is provided on the right side of the trapezoidal block, and the inner wall of the groove is fitted to the surface of the threaded column. A second spring is fixedly connected to the right side of the trapezoidal block, and connecting blocks are fixedly connected to the right side of the second spring and the upper surface of the second pump cover. A scale is fixedly connected to the left side of the U-shaped plate, and a ring is fixedly connected to the surface of the threaded column. The right side of the trapezoidal block is fitted to the surface of the ring.

[0011] The technical effects achieved by this utility model are as follows:

[0012] This utility model discloses a plunger pump assembly. Through the cooperation of a first disc, a first rectangular hole, a cylinder, a first limiting ring, a second pump cover, a threaded cylinder, a threaded column, a turntable, a second bearing, a second disc, a second rectangular hole, a guide column, and an oblique hole, the user can change the distance between the cylinder and the rotating shaft by rotating the turntable. By changing the distance between the cylinder and the rotating shaft, the stroke of the plunger can be changed, thereby making the plunger pump assembly suitable for different usage needs.

[0013] This utility model discloses a plunger pump assembly. Through the pulling force of the second spring on the trapezoidal block, the trapezoidal block and the ring are brought into close contact. At the same time, when the ring moves up or down, the reading on the left side of the trapezoidal block changes through the inclined surface of the trapezoidal block. At this time, by observing the reading on the left side of the trapezoidal block, the distance between the cylinder and the rotating shaft can be intuitively judged. Furthermore, through the cooperation of the U-shaped plate, trapezoidal block, groove, second spring, connecting block, scale and ring, the user can intuitively and quickly judge the distance between the cylinder and the rotating shaft when adjusting the distance between them. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a left view of the structure of this utility model;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 yes Figure 3 Sectional view at point AA;

[0018] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 This is a top view of the first disk in this utility model;

[0020] Figure 7 This is a left view of the cylinder in this utility model;

[0021] Figure 8 This is a top view of the rectangular ring in this utility model;

[0022] Figure 9 This is a top view of the second disk in this utility model;

[0023] Figure 10 This is a top view of the trapezoidal block in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Pump body; 2. Oil outlet pipe; 3. Oil inlet pipe; 4. One-way seal; 41. Cylinder; 42. Connecting ring; 43. First spring; 44. Sealing ball; 45. Sealing ring; 5. Drive mechanism; 51. First pump cover; 52. Drive motor; 53. Rotating shaft; 54. First bearing; 6. First disc; 7. First rectangular hole; 8. Cylinder; 9. First limiting ring; 10. Rectangular ring; 11. Plunger; 12. Second limiting ring; 13. Second pump cover; 14. Threaded cylinder; 15. Threaded column; 16. Turntable; 17. Second bearing; 18. Second disc; 19. Second rectangular hole; 20. Guide post; 21. Inclined hole; 22. U-shaped plate; 23. Trapezoidal block; 24. Groove; 25. Second spring; 26. Connecting block; 27. Scale; 28. Ring. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1 to 9As shown, a plunger pump assembly includes a pump body 1. An oil outlet pipe 2 is fixedly connected to the upper surface of the pump body 1, and an oil inlet pipe 3 is fixedly connected to the bottom of the pump body 1. One-way seals 4 are fixedly connected to the inner walls of both the oil outlet pipe 2 and the oil inlet pipe 3. A drive mechanism 5 is fixedly connected to the bottom of the pump body 1. A first disc 6 is fixedly connected to the surface of the drive mechanism 5. A first rectangular hole 7 is formed inside the first disc 6. A cylinder 8 is fitted into the first rectangular hole 7. A first limiting ring 9 is fixedly connected to the surface of the cylinder 8. The upper and lower sides of the first disc 6 are fitted to the surface of the first limiting ring 9. A rectangular ring 10 is fitted to the surface of the cylinder 8. A plunger 11 is fixedly connected to the right side of the rectangular ring 10. The surface of the plunger 11 is fitted to the inner wall of the pump body 1. A second limiting ring 1 is fixedly connected to the surface of the cylinder 8. 2. The upper and lower sides of the rectangular ring 10 are in contact with the surface of the second limiting ring 12. The upper surface of the pump body 1 is fixedly connected to the second pump cover 13. The inner wall of the second pump cover 13 is fixedly connected to the threaded cylinder 14. The inner wall of the threaded cylinder 14 is threadedly connected to the threaded column 15. The top of the threaded column 15 is fixedly connected to the turntable 16. The surface of the threaded column 15 is fixedly connected to the second bearing 17. The surface of the second bearing 17 is fixedly connected to the second disc 18. The interior of the second disc 18 is provided with a second rectangular hole 19. The inner wall of the second rectangular hole 19 is fixedly connected to the guide column 20. The interior of the cylinder 8 is provided with an inclined hole 21. The inner wall of the inclined hole 21 is in contact with the surface of the guide column 20. The included angle between the guide column 20 and the threaded column 15 is 30°. The included angle between the first disc 6 and the second disc 18 is 30°.

[0029] The one-way seal 4 includes a cylinder 41, a connecting ring 42, a first spring 43, a sealing ball 44, and a sealing ring 45. The inner walls of the oil outlet pipe 2 and the oil inlet pipe 3 are fixedly connected to the surface of the cylinder 41. The surfaces of the connecting ring 42 and the sealing ring 45 are fixedly connected to the inner wall of the cylinder 41. The inner wall of the sealing ring 45 is in contact with the surface of the sealing ball 44. The bottom of the first spring 43 is fixedly connected to the upper surface of the sealing ball 44. The surface of the first spring 43 is fixedly connected to the inner wall of the connecting ring 42. The diameter of the sealing ball 44 is larger than the diameter of the sealing ring 45, and the diameter of the sealing ball 44 is smaller than the inner diameter of the cylinder 41.

[0030] The drive mechanism 5 includes a first pump cover 51, a drive motor 52, a rotating shaft 53, and a first bearing 54. The upper surface of the first pump cover 51 is fixedly connected to the bottom of the pump body 1. The upper surface of the drive motor 52 is fixedly connected to the bottom of the first pump cover 51. The output end of the drive motor 52 is fixedly connected to the bottom end of the rotating shaft 53 through a coupling. The inner ring of the first bearing 54 and the inner wall of the first disc 6 are both fixedly connected to the surface of the rotating shaft 53. The outer ring of the first bearing 54 is fixedly connected to the inner wall of the first pump cover 51.

[0031] It should be noted that the sealing ball 44 and the sealing ring 45 are in direct and tight contact due to the elastic force of the first spring 43. When the plunger 11 moves to the left, the hydraulic oil in the oil inlet pipe 3 pushes the sealing ball 44, causing the sealing ball 44 to separate from the sealing ring 45, and allowing the hydraulic oil to enter the pump body 1. When the plunger 11 moves to the right, the hydraulic oil in the pump body 1 pushes the sealing ball 44 in the oil outlet pipe 2, causing the sealing ball 44 to separate from the sealing ring 45, and allowing the hydraulic oil to be discharged through the oil outlet pipe 2.

[0032] When the drive motor 52 drives the first disk 6 to rotate, the cylinder 8 rotates around the shaft 53 through the first disk 6. Through the cooperation of the cylinder 8 and the rectangular ring 10, the plunger 11 moves back and forth in the pump body 1. The first limiting ring 9 makes the cylinder 8 only able to move horizontally within the first rectangular hole 7. The second limiting ring 12 keeps the rectangular ring 10 in a horizontal state.

[0033] The threaded column 15 and the threaded cylinder 14 work together so that the user can move the second disc 18 up or down by rotating the turntable 16. When the second disc 18 moves down, the distance between the cylinder 8 and the rotating shaft 53 is reduced by the cooperation of the inclined guide column 20 and the inclined hole 21. When the second disc 18 moves up, the distance between the cylinder 8 and the rotating shaft 53 is increased by the cooperation of the inclined guide column 20 and the inclined hole 21. At the same time, the second bearing 17 prevents the threaded column 15 from rotating when the second disc 18 rotates.

[0034] like Figures 1 to 10 As shown, a U-shaped plate 22 is fixedly connected to the upper surface of the second pump cover 13. A trapezoidal block 23 is attached to both the inner wall of the U-shaped plate 22 and the upper surface of the second pump cover 13. A groove 24 is provided on the right side of the trapezoidal block 23. The inner wall of the groove 24 is attached to the surface of the threaded column 15. A second spring 25 is fixedly connected to the right side of the trapezoidal block 23. A connecting block 26 is fixedly connected to both the right side of the second spring 25 and the upper surface of the second pump cover 13. A scale 27 is fixedly connected to the left side of the U-shaped plate 22. A ring 28 is fixedly connected to the surface of the threaded column 15. The right side of the trapezoidal block 23 is attached to the surface of the ring 28.

[0035] It should be noted that the second spring 25 pulls on the trapezoidal block 23, making the trapezoidal block 23 and the ring 28 in close contact. At the same time, when the ring 28 moves up or down, the reading on the left side of the trapezoidal block 23 changes due to the inclined surface of the trapezoidal block 23. At this time, by observing the reading on the left side of the trapezoidal block 23, the distance between the cylinder 8 and the rotating shaft 53 can be intuitively judged. Furthermore, through the cooperation of the U-shaped plate 22, the trapezoidal block 23, the groove 24, the second spring 25, the connecting block 26, the scale 27 and the ring 28, the user can intuitively and quickly judge the distance between the cylinder 8 and the rotating shaft 53 when adjusting the distance between them.

[0036] The working principle of this utility model is as follows: by turning on the drive motor 52, the drive motor 52 drives the first disk 6 to rotate, and through the rotating first disk 6, the cylinder 8 rotates around the rotating shaft 53. Then, the cooperation of the rectangular ring 10, the cylinder 8, and the second limiting ring 12 causes the plunger 11 to move back and forth in the pump body 1. When the plunger 11 moves to the left, the hydraulic oil in the oil inlet pipe 3 pushes the sealing ball 44, causing the sealing ball 44 to separate from the sealing ring 45, and allowing the hydraulic oil to enter the pump body 1. When the plunger 11 moves to the right, the hydraulic oil in the pump body 1 pushes the sealing ball 44 in the oil outlet pipe 2, causing the sealing ball 44 to separate from the sealing ring 45, and allowing the hydraulic oil to be discharged through the oil outlet pipe 2.

[0037] When it is necessary to adjust the stroke of the plunger 11, first turn off the drive motor 52 so that the drive motor 52 no longer drives the first disc 6 to rotate. After the first disc 6 stops rotating, rotate the turntable 16 to make the threaded column 15 rotate. Through the cooperation of the threaded column 15 and the threaded cylinder 14, the second disc 18 moves up or down. When the second disc 18 moves down, through the cooperation of the inclined guide column 20 and the inclined hole 21, the distance between the cylinder 8 and the rotating shaft 53 can be reduced. When the second disc 18 moves up, through the cooperation of the inclined guide column 20 and the inclined hole 21, the distance between the cylinder 8 and the rotating shaft 53 can be increased. After the distance between the cylinder 8 and the rotating shaft 53 is adjusted to a suitable size, stop rotating the turntable 16. Through the self-locking property between the threaded column 15 and the threaded cylinder 14, the distance between the second disc 18 and the first disc 6 cannot be changed. At this time, by changing the distance between the cylinder 8 and the rotating shaft 53, the stroke of the plunger 11 can be changed.

[0038] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A plunger pump assembly, characterized in that: The pump body (1) includes an oil outlet pipe (2) fixedly connected to the upper surface of the pump body (1) and an oil inlet pipe (3) fixedly connected to the bottom of the pump body (1). One-way seals (4) are fixedly connected to the inner walls of both the oil outlet pipe (2) and the oil inlet pipe (3). A drive mechanism (5) is fixedly connected to the bottom of the pump body (1). A first disc (6) is fixedly connected to the surface of the drive mechanism (5). A first rectangular hole (7) is opened inside the first disc (6). A cylinder (8) is fitted into the first rectangular hole (7). A first limiting ring (9) is fixedly connected to the surface of the cylinder (8). The upper and lower sides of the first disc (6) are fitted to the surface of the first limiting ring (9). A rectangular ring (10) is fitted to the surface of the cylinder (8). A plunger (11) is fixedly connected to the right side of the rectangular ring (10). The surface of the plunger (11) is fitted to the inner wall of the pump body (1). A second limiting ring (12) is fixedly connected to the surface of the cylinder (8). The upper and lower sides of the rectangular ring (10) are in contact with the surface of the second limiting ring (12). A second pump cover (13) is fixedly connected to the upper surface of the pump body (1). A threaded cylinder (14) is fixedly connected to the inner wall of the second pump cover (13). A threaded column (15) is threadedly connected to the inner wall of the threaded cylinder (14). A turntable (16) is fixedly connected to the top of the threaded column (15). A second bearing (17) is fixedly connected to the surface of the threaded column (15). A second disc (18) is fixedly connected to the surface of the second bearing (17). A second rectangular hole (19) is opened inside the second disc (18). A guide column (20) is fixedly connected to the inner wall of the second rectangular hole (19). An oblique hole (21) is opened inside the cylinder (8). The inner wall of the oblique hole (21) is in contact with the surface of the guide column (20).

2. A piston pump assembly according to claim 1, characterized in that: The one-way seal (4) includes a cylinder (41), a connecting ring (42), a first spring (43), a sealing ball (44), and a sealing ring (45). The inner wall of the oil outlet pipe (2) and the inner wall of the oil inlet pipe (3) are fixedly connected to the surface of the cylinder (41). The surface of the connecting ring (42) and the surface of the sealing ring (45) are fixedly connected to the inner wall of the cylinder (41). The inner wall of the sealing ring (45) is in contact with the surface of the sealing ball (44). The bottom of the first spring (43) is fixedly connected to the upper surface of the sealing ball (44). The surface of the first spring (43) is fixedly connected to the inner wall of the connecting ring (42).

3. A piston pump assembly according to claim 2, wherein: The diameter of the sealing ball (44) is greater than the diameter of the sealing ring (45), and the diameter of the sealing ball (44) is smaller than the inner diameter of the cylinder (41).

4. A piston pump assembly according to claim 1, wherein: The drive mechanism (5) includes a first pump cover (51), a drive motor (52), a rotating shaft (53), and a first bearing (54). The upper surface of the first pump cover (51) is fixedly connected to the bottom of the pump body (1). The upper surface of the drive motor (52) is fixedly connected to the bottom of the first pump cover (51). The output end of the drive motor (52) is fixedly connected to the bottom end of the rotating shaft (53) through a coupling. The inner ring of the first bearing (54) and the inner wall of the first disc (6) are both fixedly connected to the surface of the rotating shaft (53). The outer ring of the first bearing (54) is fixedly connected to the inner wall of the first pump cover (51).

5. A piston pump assembly as claimed in claim 1, wherein: The included angle between the guide post (20) and the threaded post (15) is 30°, and the included angle between the first disk (6) and the second disk (18) is 30°.

6. A piston pump assembly according to claim 1, wherein: A U-shaped plate (22) is fixedly connected to the upper surface of the second pump cover (13). A trapezoidal block (23) is attached to the inner wall of the U-shaped plate (22) and the upper surface of the second pump cover (13). A groove (24) is provided on the right side of the trapezoidal block (23). The inner wall of the groove (24) is attached to the surface of the threaded column (15). A second spring (25) is fixedly connected to the right side of the trapezoidal block (23). A connecting block (26) is fixedly connected to the right side of the second spring (25) and the upper surface of the second pump cover (13). A scale (27) is fixedly connected to the left side of the U-shaped plate (22). A ring (28) is fixedly connected to the surface of the threaded column (15). The right side of the trapezoidal block (23) is attached to the surface of the ring (28).

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