Wear-resistant piston pump

Abstract

The invention provides a wear-resistant piston pump, and belongs to the technical field of pump bodies. The piston pump solves the problems that under the condition that a traditional piston pump works for a long time, a gap is generated between a piston rod and a pump body due to friction to cause sealing failure of the pump body, and in the operation process of the piston pump, the fluid backflow phenomenon is prone to occurring at a feeding port, so that the pumping efficiency is reduced, the energy consumption is increased, and even the system stability is affected. The wear-resistant piston pump comprises a pump shell, a feeding pipeline arranged on one side of the pump shell, a bottom cover and a protective cover, wherein the bottom cover and the protective cover are fixedly mounted at the two ends of the pump shell; a one-way valve assembly is installed in the material pipeline, an installation groove is formed in the end of the pump shell, a bearing seat is fixedly installed in the installation groove, the bearing seat is connected with the pump shell through a first bolt, the bearing seat is sleeved with an output shaft used for providing power, and the output shaft extends out of the pump shell and penetrates through the protective cover. The bottom of the output shaft is connected with a transmission unit and a piston unit. The invention has the advantages of wear resistance and liquid backflow prevention.

Description

Technical Field

[0001] The present invention belongs to the technical field of pump bodies, and particularly relates to a wear-resistant piston pump. Background Art

[0002] A piston pump is also called an electric reciprocating pump. Structurally, it is divided into single-cylinder and multi-cylinder types. The piston pump relies on the reciprocating movement of the piston to cause the working volume of the pump chamber to change periodically, realizing the suction and discharge of liquid. Its characteristic is a relatively high head.

[0003] The piston pump is suitable for transporting oil emulsions without solid particles at room temperature, etc., and is used in oil fields, coal seam water injection, oil injection, oil production; as the power pump for hydraulic presses and water presses, for hydraulic sand cleaning, and for transporting ammonia liquid in fertilizer factories, etc.

[0004] In the case of long-term operation of traditional piston pumps, gaps are generated between the piston rod and the pump body due to friction, leading to the failure of the pump body seal. Moreover, scratches are prone to appear on the pump cover after long-term use, and it needs to be frequently replaced, shortening the service life of the equipment. The cost of replacing the pump cover is high and the replacement time is long, affecting production efficiency and production costs; during the operation of the piston pump, fluid backflow is prone to occur at the feed port, resulting in a decrease in pumping efficiency, an increase in energy consumption, and even affecting system stability. Summary of the Invention

[0005] The purpose of the present invention is to provide a highly efficient wear-resistant and anti-backflow piston pump for the above problems existing in the prior art.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A wear-resistant piston pump includes a pump housing, a feed pipe opened on one side of the pump housing, and a bottom cover and a protective cover fixedly installed at both ends of the pump housing. A through hole is provided at the center of the protective cover; It is characterized in that a one-way valve assembly is installed in the feed pipe. An installation groove is provided at the end of the pump housing. A bearing seat is fixedly installed in the installation groove, and the bearing seat is connected to the pump housing by bolt one. The protective cover is installed on the bearing seat by bolt two. An output shaft for providing power is sleeved on the bearing seat, and the output shaft extends outside the pump housing and passes through the protective cover; A transmission unit and a piston unit are connected to the bottom of the output shaft; A wear-resistant kit for reducing the friction of the output shaft is provided between the output shaft and the protective cover, and the wear-resistant kit is in an I-shaped shape.

[0007] In the above-mentioned wear-resistant piston pump, an outer bushing and an inner bushing are respectively arranged on the wear-resistant kit. The bottom of the outer bushing has a convex ring that abuts against the output shaft, and a sealing ring is installed on the convex ring. A cavity is formed between the outer bushing and the output shaft, and the inner bushing is installed in the cavity. A clamping unit is arranged between the outer bushing and the inner bushing. A groove for installing the clamping unit is provided on the inner wall of the outer bushing, and a number of rolling balls for reducing friction are arranged on the inner wall of the inner bushing. A number of clamping grooves are formed on the outer wall of the inner bushing.

[0008] In the above-mentioned wear-resistant piston pump, the clamping unit includes a fixing column, a clamping frame installed on the fixing column, and a fixing piece located on one side of the clamping frame. Clamping heads and clamping tails are respectively arranged at both ends of the clamping piece, and the top of the clamping head is arc-shaped. The clamping head is connected to the clamping groove, and the clamping tail is connected to the fixing piece through an elastic piece.

[0009] In the above-mentioned wear-resistant piston pump, a number of elastic ring blocks are arranged on the outer wall of the outer bushing, and an annular groove for installing the elastic ring blocks is formed on the protective cover.

[0010] In the above-mentioned wear-resistant piston pump, a support ring for fixing the one-way valve assembly is arranged in the feed pipe. A water passing seat with a water inlet is arranged on the one-way valve assembly, and the water passing seat abuts against the support ring. A guiding seat is arranged on the water passing seat, and the guiding seat is hollow. A return spring is sleeved on the guiding seat. A blocking pad is connected to the top of the return spring, and a positioning seat for fixing the return spring is arranged on the blocking pad, and the positioning seat corresponds to the guiding seat. A hollow valve seat for fixing the blocking pad is installed on the one-way valve assembly, and a sealing ring is arranged on the valve seat, and the sealing ring is fixed between the feed pipe and the valve seat.

[0011] In the above-mentioned wear-resistant piston pump, a first ball bearing for reducing the friction of the output shaft is arranged between the bearing seat and the output shaft. A second ball bearing is installed between the output shaft and the pump housing. A fixing nut for fixing is installed on the output shaft between the first ball bearing and the protective cover.

[0012] In the above-mentioned wear-resistant piston pump, a turntable for connecting with the output shaft is arranged on the transmission unit, and the turntable is inclined.

[0013] In the above-mentioned wear-resistant piston pump, a piston block is arranged on the piston unit. A piston rod connected to the turntable is arranged on the piston block. An oil pipeline and a discharge pipeline are formed in the piston block, and the feed pipeline is communicated with the oil pipeline and the discharge pipeline.

[0014] In the above-mentioned wear-resistant piston pump, the wear-resistant kit is made of an elastic material.

[0015] Compared with the prior art, this wear-resistant piston pump: 1. The wear-resistant kit arranged between the output shaft and the protective cover is in an I-shaped structure and is made of an elastic material. This structure can effectively reduce the friction between the output shaft and the protective cover during operation, reduce wear, and extend the service life of the output shaft and related components. At the same time, the design of the outer bushing and the inner bushing on the wear-resistant kit, as well as the setting of the rolling balls on the inner wall of the inner bushing, further enhances the wear-resistant effect, reduces the frictional resistance, and improves the operating efficiency of the piston pump; 2. The cooperation of components such as the return spring, the blocking pad, and the positioning seat in the one-way valve assembly enables the one-way valve to automatically open and close under the action of fluid pressure, realizes the one-way flow of the fluid, prevents the fluid from flowing back, and ensures the normal working order of the piston pump and the reliability of fluid transportation. Description of the Drawings

[0016] Figure 1 is the three-dimensional structure diagram of this wear-resistant piston pump.

[0017] Figure 2 is the cross-sectional view of this wear-resistant piston pump.

[0018] Figure 3 is the cross-sectional view of the wear-resistant kit of this wear-resistant piston pump.

[0019] Figure 4 is the cross-sectional view of the one-way valve assembly of this wear-resistant piston pump.

[0020] In the figure, 1. Pump housing; 2. Feed pipeline; 3. Bottom cover; 4. Protective cover; 5. One-way valve assembly; 6. Bearing seat; 7. Bolt 1; 8. Bolt 2; 9. Output shaft; 10. Transmission unit; 11. Piston unit; 12. Wear-resistant kit; 13. Outer bushing; 14. Inner bushing; 15. Convex ring; 16. Sealing ring; 17. Clamping unit; 18. Groove; 19. Rolling ball; 20. Card slot; 21. Fixed column; 22. Clamping frame; 23. Fixed part; 24. Card joint head; 25. Card joint tail; 26. Elastic part; 27. Elastic ring block; 28. Support ring; 29. Water passing seat; 30. Guide seat; 31. Return spring; 32. Blocking pad; 33. Positioning seat; 34. Valve seat; 35. Sealing ring; 36. Ball bearing 1; 37. Ball bearing 2; 38. Fixed nut; 39. Turntable; 40. Piston block; 41. Piston rod; 42. Oil pipeline; 43. Discharge pipeline. Detailed Embodiments

[0021] The following are specific embodiments of the present invention in combination with the drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0022] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, this wear-resistant piston pump includes a pump housing 1, a feed pipe 2 opened on one side of the pump housing 1, and a bottom cover 3 and a protective cover 4 fixedly installed at both ends of the pump housing 1. There is a through hole at the center of the protective cover 4; A check valve assembly 5 is installed in the feed pipe 2. The check valve assembly 5 installed in the feed pipe 2 is used to control the one-way flow of the fluid and prevent the fluid in the pump housing from flowing back. An installation groove is provided at the end of the pump housing 1. A bearing seat 6 is fixedly installed in the installation groove, and the bearing seat 6 is connected to the pump housing 1 through a first bolt 7. The protective cover 4 is installed on the bearing seat 6 through a second bolt 8. An output shaft 9 for providing power is sleeved on the bearing seat 6, and the output shaft 9 extends out of the pump housing 1 and passes through the protective cover 4; A transmission unit 10 and a piston unit 11 are connected to the bottom of the output shaft 9. The transmission unit 10 is used to transmit power to the piston unit 11, and the piston unit 11 realizes the suction and discharge of the fluid; A wear-resistant kit 12 for reducing the friction of the output shaft 9 is provided between the output shaft 9 and the protective cover 4. The wear-resistant kit 12 is in an I-shaped shape. The installation of the wear-resistant kit 12 can effectively reduce the friction between the output shaft 9 and the protective cover 4 and improve the service life of the components.

[0023] Specifically, an outer bushing 13 and an inner bushing 14 are respectively provided on the wear-resistant kit 12. A convex ring 15 is provided at the bottom of the outer bushing 13 and abuts against the output shaft 9. A sealing ring 16 is installed on the convex ring 15. The sealing ring 16 plays a sealing role to prevent fluid leakage. A cavity is formed between the outer bushing 13 and the output shaft 9. The inner bushing 14 is installed in the cavity. A clamping unit 17 is provided between the outer bushing 13 and the inner bushing 14. A groove 18 for installing the clamping unit 17 is provided on the inner wall of the outer bushing 13. The outer bushing 13 and the inner bushing 14 are connected and fixed through the clamping unit 17. A plurality of rolling balls 19 for reducing friction are provided on the inner wall of the inner bushing 14. A plurality of clamping grooves 20 are provided on the outer wall of the inner bushing 14. The provision of multiple clamping grooves 20 improves the stability of the inner bushing 14. If there is only one clamping groove 20, it is likely to be worn and cause the inner bushing 14 to fall off.

[0024] Specifically, the clamping unit 17 includes a fixing column 21, a clamping frame 22 installed on the fixing column 21, and a fixing member 23 located on one side of the clamping frame 22. Clamping heads 24 and clamping tails 25 are respectively provided at both ends of the clamping member. The top of the clamping head 24 is arc-shaped. The clamping head 24 is connected to the clamping groove 20. The clamping tail 25 is connected to the fixing member 23 through an elastic member 26.

[0025] Specifically, a number of elastic ring blocks 27 are provided on the outer wall of the outer bushing 13, and annular grooves for installing the elastic ring blocks 27 are formed in the protective cover 4. Through the cooperation of the elastic ring blocks 27 and the annular grooves, the installation stability of the wear-resistant kit 12 is further enhanced.

[0026] Specifically, a support ring 28 for fixing the one-way valve assembly 5 is provided inside the feed pipe 2. A water passing seat 29 with a water inlet is provided on the one-way valve assembly 5, and the water passing seat 29 abuts against the support ring 28. A guide seat 30 is provided on the water passing seat 29. The guide seat 30 is hollow. A return spring 31 is sleeved on the guide seat 30. A blocking pad 32 is connected to the top of the return spring 31. A positioning seat 33 for fixing the return spring 31 is provided on the blocking pad 32, and the positioning seat 33 corresponds to the guide seat 30. A hollow valve seat 34 for fixing the blocking pad 32 is installed on the one-way valve assembly 5. A sealing ring 35 is provided on the valve seat 34, and the sealing ring 35 is fixed between the feed pipe 2 and the valve seat 34 to ensure the sealing performance of the one-way valve assembly 5.

[0027] Specifically, a ball bearing one 36 for reducing the friction of the output shaft 9 is provided between the bearing seat 6 and the output shaft 9. A ball bearing two 37 is installed between the output shaft 9 and the pump housing 1. A fixing nut 38 for fixing is installed on the output shaft 9 between the ball bearing one 36 and the protective cover 4, and the fixing nut 38 ensures the stable operation of the output shaft 9.

[0028] Specifically, a turntable 39 for connecting with the output shaft 9 is provided on the transmission unit 10, and the turntable 39 is inclined. The turntable 39 can convert the rotational motion of the output shaft 9 into the reciprocating motion of the piston unit 11.

[0029] Specifically, a piston block 40 is provided on the piston unit 11. A piston rod 41 connected to the turntable 39 is provided on the piston block 40. An oil pipeline 42 and a discharge pipeline 43 are formed inside the piston block 40. The feed pipe 2 is communicated with the oil pipeline 42 and the discharge pipeline 43.

[0030] Specifically, the wear-resistant kit 12 is made of an elastic material and has good elasticity and wear resistance.

[0031] First, install the bearing housing 6 in the installation groove at the end of the pump casing 1 through the first bolt 7, and then install the protective cover 4 on the bearing housing 6 through the second bolt 8; pass the output shaft 9 through the protective cover 4 and the bearing housing 6, and install the wear-resistant kit 12 between the output shaft 9 and the protective cover 4, and connect and fix the outer bushing 13 and the inner bushing 14 through the clamping unit 17; install the one-way valve assembly 5 in the feed pipe 2, abut the water passing seat 29 against the support ring 28, and install components such as the return spring 31, the blocking pad 32 and the valve seat 34; connect the transmission unit 10 and the piston unit 11 to the bottom of the output shaft 9, and install the first ball bearing 36, the second ball bearing 37 and the fixing nut 38, etc.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0033] Although terms such as pump casing 1, feed pipe 2, bottom cover 3, protective cover 4, one-way valve assembly 5, bearing housing 6, first bolt 7, second bolt 8, output shaft 9, transmission unit 10, piston unit 11, wear-resistant kit 12, outer bushing 13, inner bushing 14, convex ring 15, sealing ring 16, clamping unit 17, groove 18, rolling ball 19, card slot 20, fixing post 21, clamping frame 22, fixing piece 23, card joint head 24, card joint tail 25, elastic member 26, elastic ring block 27, support ring 28, water passing seat 29, guiding seat 30, return spring 31, blocking pad 32, positioning seat 33, valve seat 34, sealing ring 35, first ball bearing 36, second ball bearing 37, fixing nut 38, turntable 39, piston block 40, piston rod 41, oil pipeline 42, discharge pipeline 43 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A wear-resistant piston pump, comprising a pump housing (1), a feed pipe (2) opened on one side of the pump housing (1), and end covers (3) and protective covers (4) fixedly installed at both ends of the pump housing (1). There is a through hole at the center of the protective cover (4); It is characterized in that A one-way valve assembly (5) is installed in the described feed pipe (2). An installation groove is provided at the end of the pump housing (1). A bearing seat (6) is fixedly installed in the installation groove, and the bearing seat (6) is connected to the pump housing (1) by a first bolt (7). The protective cover (4) is installed on the bearing seat (6) by a second bolt (8). An output shaft (9) for providing power is sleeved on the bearing seat (6), and the output shaft (9) extends outside the pump housing (1) and passes through the protective cover (4). A transmission unit (10) and a piston unit (11) are connected to the bottom of the output shaft (9). A wear-resistant kit (12) for reducing the friction of the output shaft (9) is provided between the output shaft (9) and the protective cover (4), and the wear-resistant kit (12) is in an I-shaped shape.

2. The wear-resistant piston pump according to claim 1, characterized in that An outer bushing (13) and an inner bushing (14) are respectively arranged on the wear-resistant kit (12). The bottom of the outer bushing (13) has a convex ring (15) that abuts against the output shaft (9), and a sealing ring (16) is installed on the convex ring (15). A cavity is formed between the outer bushing (13) and the output shaft (9). The inner bushing (14) is installed in the cavity. A clamping unit (17) is arranged between the outer bushing (13) and the inner bushing (14). A groove (18) for installing the clamping unit (17) is provided on the inner wall of the outer bushing (13). A number of rolling balls (19) for reducing friction are arranged on the inner wall of the inner bushing (14). A number of clamping grooves (20) are provided on the outer wall of the inner bushing (14).

3. The wear-resistant piston pump according to claim 2, characterized in that The clamping unit (17) includes a fixed column (21), a clamping frame (22) installed on the fixed column (21), and a fixing member (23) located on one side of the clamping frame (22). Clamping heads (24) and clamping tails (25) are respectively arranged at both ends of the clamping member. The top of the clamping head (24) is arc-shaped. The clamping head (24) is connected to the clamping groove (20). The clamping tail (25) is connected to the fixing member (23) by an elastic member (26).

4. The wear-resistant piston pump according to claim 2, characterized in that A number of elastic ring blocks (27) are arranged on the outer wall of the outer bushing (13). An annular groove for installing the elastic ring blocks (27) is provided on the protective cover (4).

5. The wear-resistant piston pump according to claim 1, characterized in that The feed pipe (2) is provided with a support ring (28) for fixing the one-way valve assembly (5). The one-way valve assembly (5) is provided with a water passing seat (29) with a water inlet, and the water passing seat (29) abuts against the support ring (28). The water passing seat (29) is provided with a guide seat (30). The guide seat (30) is hollow. A return spring (31) is sleeved on the guide seat (30). The top of the return spring (31) is connected with a blocking pad (32). The blocking pad (32) is provided with a positioning seat (33) for fixing the return spring (31), and the positioning seat (33) corresponds to the guide seat (30). The one-way valve assembly (5) is installed with a hollow valve seat (34) for fixing the blocking pad (32). The valve seat (34) is provided with a sealing ring (35), and the sealing ring (35) is fixed between the feed pipe (2) and the valve seat (34).

6. The wear-resistant piston pump according to claim 1, characterized in that A ball bearing one (36) for reducing the friction of the output shaft (9) is arranged between the bearing seat (6) and the output shaft (9). A ball bearing two (37) is installed between the output shaft (9) and the pump housing (1). A fixing nut (38) for fixing is installed on the output shaft (9) between the ball bearing one (36) and the protective cover (4).

7. The wear-resistant piston pump according to claim 1, characterized in that The transmission unit (10) is provided with a turntable (39) for connecting with the output shaft (9), and the turntable (39) is inclined.

8. The wear-resistant piston pump according to claim 1, characterized in that The piston unit (11) is provided with a piston block (40). The piston block (40) is provided with a piston rod (41) connected with the turntable (39). An oil pipeline (42) and a discharge pipeline (43) are arranged in the piston block (40). The feed pipe (2) is communicated with the oil pipeline (42) and the discharge pipeline (43).

9. The wear-resistant piston pump according to claim 1, characterized in that The wear-resistant kit (12) is made of an elastic material.

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