Self-suction vane pump

Abstract

The invention relates to the technical field of self-priming pumps, in particular to a self-priming vane pump which comprises a base, a driving motor, a self-priming pump body, a rotating shaft and an impeller, the driving motor is fixedly installed at the front side end of the base, the self-priming pump body is fixedly installed at the rear side end of the base, and a liquid inlet and a liquid outlet are formed in the self-priming pump body; an impeller mounting groove is formed in the self-priming pump main body in the direction towards the driving motor; a first-stage clamping groove is formed in a bearing inner ring of a sealing bearing, a second-stage clamping groove is formed in the side wall of an inner hole of an impeller, a first-stage elastic piece groove and a second-stage elastic piece groove are formed in the side wall of a rotating shaft, and a first-stage elastic piece with a first-stage clamping protrusion is arranged on the side wall of the first-stage elastic piece groove; according to the impeller, the first-stage elastic piece with the first-stage clamping protrusion is arranged on the side wall of the first-stage elastic piece groove, and the second-stage elastic piece with the second-stage clamping protrusion is arranged on the side wall of the second-stage elastic piece groove, so that the convenience of the impeller during disassembly and maintenance is effectively improved by embedding the first-stage clamping protrusion into the first-stage clamping groove and embedding the second-stage clamping protrusion into the second-stage clamping

Description

Technical Field

[0001] This invention relates to the technical field of self-priming pumps, specifically a self-priming vane pump. Background Technology

[0002] Self-priming pumps are a type of self-priming centrifugal pump. They have advantages such as compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life, and strong self-priming ability. A Chinese patent document with publication number CN112145437B discloses a self-priming single-stage pump, which includes a pump body, a pump cover, an impeller, a pump shaft, and a motor. The pump body has a pump cavity and an inlet cavity connecting the left side of the pump cavity to an outlet cavity connecting the upper side of the pump cavity. The impeller is disposed within the pump cavity. The pump cover is disposed over the opening on the right side of the pump body. The pump shaft is rotatably mounted on the pump cover, with its left end connected to the impeller and its right end connected to the motor. The pump cover contains a rotating sleeve that is rotatably mounted on the pump shaft. The left section of the rotating sleeve is positioned between the pump cover and the pump cover. A negative pressure generating mechanism is provided, which is driven by a rotating sleeve. The corresponding pump cover is provided with a one-way air inlet valve connecting the negative pressure generating mechanism and the pump chamber, and a one-way exhaust valve connecting the negative pressure generating mechanism and the outside. A linkage switching mechanism is provided between the right section of the rotating sleeve and the pump shaft. The linkage switching mechanism is driven by the liquid in the outlet cavity. A liquid inlet cavity is provided on the outside of the outlet cavity. The liquid inlet cavity is connected to the outlet cavity. A push plate that can move left and right is provided in the liquid inlet cavity. The push plate is driven by the liquid in the outlet cavity. The push plate is equipped with a first return spring. A horizontal push rod is connected to the push plate. The horizontal push rod is connected to the linkage switching mechanism. However, the above-mentioned scheme uses a traditional installation structure for the impeller and shaft, which is inconvenient to disassemble and assemble, making the impeller more troublesome to disassemble and maintain, thus affecting the maintenance of the self-priming pump to a certain extent. Therefore, this invention proposes a self-priming vane pump to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a self-priming vane pump to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a self-priming vane pump, comprising: Base; A drive motor is fixedly mounted on the front end of the base. The self-priming pump body is fixedly installed on the rear end of the base. The self-priming pump body is provided with an inlet and an outlet. An impeller mounting groove is opened on the self-priming pump body facing the drive motor. A rear cover is fixedly installed at the position of the impeller mounting groove by positioning bolts. A bearing hole is opened on the rear cover. A rotating shaft is mounted in a bearing hole on the rear cover via a sealed bearing, and the rotating shaft is connected to the output shaft of a drive motor via a coupling. An impeller, which is fixedly mounted on a rotating shaft.

[0005] Preferably, the outer ring of the sealed bearing has a positioning groove, and the bearing hole sidewall of the rear cover has a threaded hole. A fixing bolt is threaded into the threaded hole, and a positioning rod is integrally formed at the end of the bolt. During actual installation, the positioning rod is embedded in the positioning groove.

[0006] Preferably, the inner ring of the sealed bearing has a primary engagement groove, the inner sidewall of the impeller has a secondary engagement groove, and the sidewall of the rotating shaft has a primary spring groove and a secondary spring groove. A primary spring is integrally formed on the sidewall of the primary spring groove, and a primary engagement protrusion is integrally formed on the outer sidewall of the primary spring. A secondary spring is integrally formed on the sidewall of the secondary spring groove, and a secondary engagement protrusion is integrally formed on the outer sidewall of the secondary spring. When the sealed bearing, impeller, and rotating shaft are actually connected, both the primary and secondary springs are in a reset state, and at this time, the primary engagement protrusion is embedded in the primary engagement groove, and the secondary engagement protrusion is embedded in the secondary engagement groove.

[0007] Preferably, both the primary and secondary engagement grooves are hemispherical protrusions, and the end dimensions of the primary and secondary engagement protrusions are matched with the dimensions of the engagement grooves.

[0008] Preferably, the rotating shaft has a positioning pin hole, and the primary spring plate groove and the secondary spring plate groove are both connected to the positioning pin hole. A primary force-bearing seat is integrally formed on the inner side wall of the primary spring plate, and a secondary force-bearing seat is integrally formed on the inner side wall of the secondary spring plate. A positioning pin is fixedly installed in the positioning pin hole. When the positioning pin is actually installed, the inner ends of the primary force-bearing seat and the secondary force-bearing seat are both abutted against the side wall of the positioning pin, and at this time, the engaging protrusions are stably embedded in the corresponding engaging grooves.

[0009] Preferably, six primary engagement grooves are arranged around the circumference of the sealing bearing, and each primary engagement groove has a guide groove on its side, with the outer ends of adjacent guide grooves being connected.

[0010] Preferably, a limiting groove is formed on the side wall of the secondary spring groove, and a limiting protrusion is integrally formed at the end of the primary spring. The limiting protrusion is disposed in the limiting groove. When the limiting protrusion abuts against the inner wall of the limiting groove, the primary engaging protrusion enters into the primary engaging groove along the guide groove. At this time, the primary engaging protrusion cannot pass through the inner end of the primary engaging groove.

[0011] Preferably, a guide post and a limiting seat are integrally formed on the outer wall of the rotating shaft. A set of guide posts and limiting seats are symmetrically arranged. A guide post groove is opened on the inner side wall of the impeller. When the impeller is actually installed, the guide post is embedded in the guide post groove, and the impeller and the limiting seat are abutted against each other. At this time, the secondary engagement protrusion is aligned with the secondary engagement groove.

[0012] Preferably, the sidewall of the positioning post hole is provided with an insertion groove, a turning groove, and a self-locking groove. The insertion groove and the self-locking groove are symmetrically arranged in a set, and the insertion groove and the self-locking groove are connected to the turning groove. A self-locking protrusion is integrally formed on the outer sidewall of the positioning post. The self-locking protrusion is symmetrically arranged in a set, and the size of the self-locking protrusion matches the size of the self-locking groove. The insertion groove and the self-locking groove have the same cross-sectional size. A support spring is integrally formed on the inner end of the positioning post. When the support spring is in the reset state, the self-locking protrusion is embedded in the self-locking groove.

[0013] Preferably, the outer end of the positioning post is integrally formed with an internal hexagonal nut, and the end face of the internal hexagonal nut is provided with an alignment groove, the direction of which corresponds to the direction of the self-locking protrusion.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a self-priming vane pump composed of a base, drive motor, self-priming pump body, shaft and impeller, and opening a primary engagement groove on the inner ring of the sealed bearing, opening a secondary engagement groove on the inner side wall of the impeller, opening a primary spring plate groove and a secondary spring plate groove on the side wall of the shaft, setting a primary spring plate with a primary engagement protrusion on the side wall of the primary spring plate groove, and setting a secondary spring plate with a secondary engagement protrusion on the side wall of the secondary spring plate groove, the primary engagement protrusion is embedded into the primary engagement groove, and the secondary engagement protrusion is embedded into the secondary engagement groove, thereby effectively improving the convenience of impeller disassembly and maintenance; 2. By opening positioning pin holes on the rotating shaft, setting a primary force-bearing seat on the inner wall of the primary spring sheet, and setting a secondary force-bearing seat on the inner wall of the secondary spring sheet, positioning pins are set in the positioning pin holes. The positioning pins then exert a supporting force on the primary and secondary force-bearing seats, thereby effectively improving the stability of the sealed bearing, impeller and rotating shaft during actual connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the impeller installation position of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the fixing bolt structure of the present invention; Figure 5 This is a schematic diagram of the positioning column structure of the present invention; Figure 6 This is a half-sectional view of the rotating shaft of the present invention; Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B; Figure 8 This is a half-sectional view of the rear cover of the present invention; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point C; Figure 10 This is a half-sectional view of the impeller of the present invention; Figure 11 This is a schematic diagram of the rotating shaft structure of the present invention; Figure 12 This is a half-sectional view of the rotating shaft of the present invention; Figure 13 for Figure 12 Enlarged schematic diagram of the structure at point D; Figure 14 for Figure 12 Enlarged schematic diagram of the structure at point E in the middle.

[0016] In the diagram: 1. Base; 2. Drive motor; 3. Self-priming pump body; 4. Rotating shaft; 5. Impeller; 6. Liquid inlet; 7. Liquid outlet; 8. Rear cover; 9. Sealed bearing; 10. Coupling; 11. Positioning groove; 12. Threaded hole; 13. Fixing bolt; 14. Positioning rod; 15. Primary engagement groove; 16. Secondary engagement groove; 17. Primary spring groove; 18. Secondary spring groove; 19. Primary engagement protrusion; 20. Secondary spring; 21. Secondary engagement protrusion; 22. Positioning post hole; 23. Primary force-bearing seat; 24. Secondary force-bearing seat; 25. Positioning post; 26. Guide groove; 27. Limiting groove; 28. Limiting protrusion; 29. ​​Guide post; 30. Limiting seat; 31. Guide post groove; 32. Insertion groove; 33. Turning groove; 34. Self-locking groove; 35. Self-locking protrusion; 36. Support spring; 37. Socket head cap nut; 38. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-14 The present invention provides the following four preferred embodiments: Example 1: A self-priming vane pump includes a base 1, a drive motor 2, a self-priming pump body 3, a rotating shaft 4, and an impeller 5. The drive motor 2 is fixedly installed on the front end of the base 1, and the self-priming pump body 3 is fixedly installed on the rear end of the base 1. The self-priming pump body 3 is provided with an inlet 6 and an outlet 7. An impeller mounting groove is formed on the self-priming pump body 3 facing the drive motor 2. A rear cover 8 is fixedly installed at the position of the impeller mounting groove by positioning bolts. A bearing hole is formed on the rear cover 8. The rotating shaft 4 is connected to a sealing shaft. The bearing 9 is installed in the bearing hole on the rear cover 8. The rotating shaft 4 is connected to the output shaft of the drive motor 2 through the coupling 10. The impeller 5 is fixedly installed on the rotating shaft 4. The outer ring of the sealed bearing 9 is provided with a positioning groove 11. The bearing hole side wall of the rear cover 8 is provided with a threaded hole 12. A fixing bolt 13 is threaded into the threaded hole 12. The end of the screw of the fixing bolt 13 is integrally formed with a positioning rod 14. When the fixing bolt 13 is actually installed, the positioning rod 14 is embedded into the positioning groove 11.

[0019] The inner ring of the sealed bearing 9 has a primary engagement groove 15, the inner wall of the impeller 5 has a secondary engagement groove 16, and the side wall of the rotating shaft 4 has a primary spring groove 17 and a secondary spring groove 18. A primary spring 19 is integrally formed on the side wall of the primary spring groove 17, and a primary engagement protrusion 20 is integrally formed on the outer wall of the primary spring 19. A secondary spring 21 is integrally formed on the side wall of the secondary spring groove 18, and a secondary engagement protrusion 22 is integrally formed on the outer wall of the secondary spring 21. When the sealed bearing 9, impeller 5, and rotating shaft 4 are actually connected, the primary spring 19 and the secondary spring 21 are both in the reset state, and at this time, the primary engagement protrusion 20 is embedded in the primary engagement groove 15, and the secondary engagement protrusion 22 is also integrally formed in the secondary engagement groove 16. The impeller 22 is embedded into the secondary engagement groove 16. By setting up a self-priming vane pump composed of a base 1, a drive motor 2, a self-priming pump body 3, a rotating shaft 4, and an impeller 5, a primary engagement groove 15 is opened on the inner ring of the sealed bearing 9, a secondary engagement groove 16 is opened on the inner side wall of the impeller 5, a primary spring plate groove 17 and a secondary spring plate groove 18 are opened on the side wall of the rotating shaft 4, a primary spring plate 19 with a primary engagement protrusion 20 is set on the side wall of the primary spring plate groove 17, and a secondary spring plate 21 with a secondary engagement protrusion 22 is set on the side wall of the secondary spring plate groove 18. Thus, the primary engagement protrusion 20 is embedded into the primary engagement groove 15, and the secondary engagement protrusion 22 is embedded into the secondary engagement groove 16, thereby effectively improving the convenience of disassembly and maintenance of the impeller 5.

[0020] Both the primary engagement groove 15 and the secondary engagement groove 16 are hemispherical protrusions, and the end dimensions of the primary engagement protrusion 20 and the secondary engagement protrusion 22 are matched with the dimensions of the engagement grooves.

[0021] Example 2: Based on Example 1, a positioning pin hole 23 is provided on the rotating shaft 4. The primary spring plate groove 17 and the secondary spring plate groove 18 are both connected to the positioning pin hole 23. A primary force-bearing seat 24 is integrally formed on the inner wall of the primary spring plate 19, and a secondary force-bearing seat 25 is integrally formed on the inner wall of the secondary spring plate 21. A positioning pin 26 is fixedly installed in the positioning pin hole 23. When the positioning pin 26 is actually installed, the inner ends of the primary force-bearing seat 24 and the secondary force-bearing seat 25 are both connected to the positioning pin 26. The side walls of 6 are abutted together, and at this time, the engaging protrusions are stably embedded in the corresponding engaging grooves. By opening a positioning pin hole 23 on the rotating shaft 4, setting a first-level force-bearing seat 24 on the inner side wall of the first-level spring piece 19, and setting a second-level force-bearing seat 25 on the inner side wall of the second-level spring piece 21, a positioning pin 26 is set in the positioning pin hole 23, thereby forming a supporting force on the first-level force-bearing seat 24 and the second-level force-bearing seat 25 through the positioning pin 26, thereby effectively improving the stability of the sealed bearing 9, impeller 5 and rotating shaft 4 when actually connected.

[0022] Example 3: Based on Example 2, the first-level engagement groove 15 is provided with six grooves around the circumference of the sealing bearing 9, and each first-level engagement groove 15 is provided with a guide groove 27 on its side. The outer ends of adjacent guide grooves 27 are connected. The guide grooves 27 can facilitate the entry of the first-level engagement protrusion 20 into the first-level engagement groove 15.

[0023] A limiting groove 28 is formed on the side wall of the secondary spring groove 18, and a limiting protrusion 29 is integrally formed at the end of the primary spring 19. The limiting protrusion 29 is disposed in the limiting groove 28. When the limiting protrusion 29 abuts against the inner wall of the limiting groove 28, the primary engaging protrusion 20 enters the primary engaging groove 15 along the guide groove 27. At this time, the primary engaging protrusion 20 cannot pass through the inner end of the primary engaging groove 15, which can prevent the primary engaging protrusion 20 from being inserted too far and passing through the primary engaging groove 15, thereby further facilitating the entry of the primary engaging protrusion 20 into the primary engaging groove 15.

[0024] The outer wall of the rotating shaft 4 is integrally formed with a guide post 30 and a limiting seat 31. A set of guide posts 30 and limiting seats 31 are symmetrically arranged. The inner side wall of the impeller 5 is provided with a guide post groove 32. When the impeller 5 is actually installed, the guide post 30 is embedded in the guide post groove 32, and the impeller 5 is abutted against the limiting seat 31. At this time, the secondary engagement protrusion 22 is aligned with the secondary engagement groove 16. The arrangement of the guide post 30 and the guide post groove 32 can improve the positioning stability of the impeller 5 on the rotating shaft 4. Furthermore, the common limiting of the limiting seat 31, guide post 30, and guide post groove 32 can facilitate the alignment of the secondary engagement protrusion 22 and the secondary engagement groove 16.

[0025] Example 4: Based on Example 3, the side wall of the positioning post hole 23 is provided with an insertion groove 33, a turning groove 34, and a self-locking groove 35. A set of insertion grooves 33 and self-locking grooves 35 are symmetrically arranged, and both are connected to the turning groove 34. A self-locking protrusion 36 is integrally formed on the outer wall of the positioning post 26. A set of self-locking protrusions 36 are symmetrically arranged, and their dimensions match the self-locking grooves 35. The cross-sectional dimensions of the insertion groove 33 and self-locking groove 35 are the same. The positioning post 2... A support spring 37 is integrally formed on the inner end of 6. When the support spring 37 is in the reset state, the self-locking protrusion 36 is embedded in the self-locking groove 35. The self-locking protrusion 36 enters the turning groove 34 along the insertion groove 33, and then enters the self-locking groove 35 through the turning groove 34. Under the action of the support spring 37, the self-locking protrusion 36 is embedded in the self-locking groove 35, thereby forming a self-locking effect on the positioning post 26, thus preventing the positioning post 26 from loosening, and further ensuring the connection stability of the sealed bearing 9, impeller 5 and rotating shaft 4.

[0026] The outer end of the positioning post 26 is integrally formed with an internal hexagonal nut 38. The end face of the internal hexagonal nut 38 is provided with an alignment groove, the direction of which corresponds to the direction of the self-locking protrusion 36.

[0027] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A self-priming vane pump, characterized in that: include: Base (1); Drive motor (2), which is fixedly installed on the front end of base (1); The self-priming pump body (3) is fixedly installed on the rear end of the base (1). The self-priming pump body (3) is provided with an inlet (6) and an outlet (7). An impeller mounting groove is provided on the self-priming pump body (3) facing the drive motor (2). A rear cover (8) is fixedly installed at the position of the impeller mounting groove by positioning bolts. A bearing hole is provided on the rear cover (8). The rotating shaft (4) is installed in the bearing hole on the rear cover (8) through a sealed bearing (9), and the rotating shaft (4) is connected to the output shaft of the drive motor (2) through a coupling (10). Impeller (5), which is fixedly mounted on shaft (4).

2. The self-priming vane pump according to claim 1, characterized in that: The outer ring of the sealed bearing (9) is provided with a positioning groove (11), and the bearing hole sidewall of the rear cover (8) is provided with a threaded hole (12). A fixing bolt (13) is threadedly connected in the threaded hole (12). The screw end of the fixing bolt (13) is integrally formed with a positioning rod (14). When the fixing bolt (13) is actually installed, the positioning rod (14) is embedded in the positioning groove (11).

3. A self-priming vane pump according to claim 1, characterized in that: The inner ring of the sealed bearing (9) is provided with a primary engagement groove (15), the inner sidewall of the impeller (5) is provided with a secondary engagement groove (16), the sidewall of the rotating shaft (4) is provided with a primary spring groove (17) and a secondary spring groove (18), a primary spring (19) is integrally formed on the sidewall of the primary spring groove (17), a primary engagement protrusion (20) is integrally formed on the outer sidewall of the primary spring (19), and the secondary spring groove (18) is provided with a primary engagement protrusion (20). A secondary spring sheet (21) is integrally formed on the side wall of the bearing (9), and a secondary engagement protrusion (22) is integrally formed on the outer side wall of the secondary spring sheet (21). When the sealing bearing (9), impeller (5) and shaft (4) are actually connected, the primary spring sheet (19) and the secondary spring sheet (21) are both in the reset state, and at this time the primary engagement protrusion (20) is embedded in the primary engagement groove (15), and the secondary engagement protrusion (22) is embedded in the secondary engagement groove (16).

4. A self-priming vane pump according to claim 3, characterized in that: The primary engagement groove (15) and the secondary engagement groove (16) are both hemispherical protrusions. The end dimensions of the primary engagement protrusion (20) and the secondary engagement protrusion (22) are matched with the dimensions of the engagement groove.

5. A self-priming vane pump according to claim 3, characterized in that: The rotating shaft (4) is provided with a positioning pin hole (23). The primary spring plate groove (17) and the secondary spring plate groove (18) are connected to the positioning pin hole (23). The inner side wall of the primary spring plate (19) is integrally formed with a primary force-bearing seat (24). The inner side wall of the secondary spring plate (21) is integrally formed with a secondary force-bearing seat (25). A positioning pin (26) is fixedly installed in the positioning pin hole (23). When the positioning pin (26) is actually installed, the inner ends of the primary force-bearing seat (24) and the secondary force-bearing seat (25) are abutted against the side wall of the positioning pin (26). At this time, the engaging protrusions are stably embedded in the corresponding engaging grooves.

6. A self-priming vane pump according to claim 5, characterized in that: The first-level engagement groove (15) is provided in six circumferences around the sealed bearing (9), and each of the first-level engagement grooves (15) has a guide groove (27) on its side, with the outer ends of adjacent guide grooves (27) being connected.

7. A self-priming vane pump according to claim 6, characterized in that: A limiting groove (28) is provided on the side wall of the secondary spring groove (18), and a limiting protrusion (29) is integrally formed at the end of the primary spring (19). The limiting protrusion (29) is disposed in the limiting groove (28). When the limiting protrusion (29) abuts against the inner wall of the limiting groove (28), the primary engaging protrusion (20) enters the primary engaging groove (15) along the guide groove (27). At this time, the primary engaging protrusion (20) cannot pass through the inner end of the primary engaging groove (15).

8. A self-priming vane pump according to claim 7, characterized in that: The outer wall of the rotating shaft (4) is integrally formed with a guide post (30) and a limiting seat (31). A set of guide posts (30) and limiting seats (31) are symmetrically arranged. The inner wall of the impeller (5) is provided with a guide post groove (32). When the impeller (5) is actually installed, the guide post (30) is embedded in the guide post groove (32). The impeller (5) and the limiting seat (31) are abutted against each other. At this time, the secondary engagement protrusion (22) and the secondary engagement groove (16) are aligned.

9. A self-priming vane pump according to claim 8, characterized in that: The positioning post hole (23) has an insertion groove (33), a turning groove (34) and a self-locking groove (35) on its side wall. The insertion groove (33) and the self-locking groove (35) are symmetrically arranged in a set, and the insertion groove (33) and the self-locking groove (35) are connected to the turning groove (34). The positioning post (26) has a self-locking protrusion (36) integrally formed on its outer side wall. The self-locking protrusion (36) is symmetrically arranged in a set, and the size of the self-locking protrusion (36) matches the size of the self-locking groove (35). The insertion groove (33) and the self-locking groove (35) have the same cross-sectional size. The positioning post (26) has a support spring (37) integrally formed on its inner end. When the support spring (37) is in the reset state, the self-locking protrusion (36) is embedded in the self-locking groove (35).

10. A self-priming vane pump according to claim 9, characterized in that: The outer end of the positioning post (26) is integrally formed with an internal hexagonal nut (38), and the end face of the internal hexagonal nut (38) is provided with an alignment groove, the direction of which corresponds to the direction of the self-locking protrusion (36).

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