Submerged shaft mixed flow pump with sliding bearing

Abstract

The application relates to the technical field of pump body structures, in particular to a submersible shaft mixed-flow pump with sliding bearings, which comprises a water flow conveying pipe, the top of the water flow conveying pipe is fixedly installed with a conical flow guide pipe, the water flow is driven to flow by the rotation of mixed-flow paddles driven by a stepping motor, the water flow process also applies pressure to the mixed-flow paddles along the central axis direction of the stepping motor, the mixed-flow paddles move up and down in the water flow conveying pipe when being pressed, when the first and second abutting parts move relatively, the rotatable insertion part at the bottom of the second abutting part also moves up and down in the movable shaft seat when the second abutting part moves up and down, the moving range of the first and second abutting parts is reduced through the action of the first and second return springs, the mixed-flow paddles move up and down in the water flow conveying pipe, the pressure generated by the mixed-flow paddles in the rotation process under the influence of the water flow is adapted, and the pressure of the mixed-flow paddles impacted by the water flow in the paddle rotation process can be effectively buffered.

Description

Technical Field

[0001] This invention relates to the field of pump body structure technology, specifically to a submersible axial mixed-flow pump with sliding bearings. Background Technology

[0002] Submersible axial mixed-flow pumps with sliding bearings are a relatively special type of pump. They combine the characteristics of axial and centrifugal pumps, using a motor to drive the mixing impellers to rotate, allowing the liquid to flow both axially and radially. The sliding bearings play a crucial role in pump operation, supporting the rotor, reducing friction, and bearing both radial and axial forces. When the pump starts, the centrifugal force and axial thrust generated by the rotating mixing impellers cause the liquid to flow within the pump body, while the sliding bearings ensure stable rotor operation.

[0003] During the operation of a submersible shaft mixed-flow pump with sliding bearings, when the bearings inside the pump move, the bearing ends are not effectively restricted. As a result, the impact force generated when the bearing ends move is not effectively reduced, and the impact force is relatively large, which greatly reduces the service life. Summary of the Invention

[0004] The purpose of this invention is to provide a submersible shaft mixed-flow pump with a sliding bearing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a submersible shaft mixed-flow pump with a sliding bearing, comprising a water delivery pipe, a tapered guide pipe fixedly installed at the top of the water delivery pipe, an assembly frame fixedly installed on the tapered guide pipe, a stepper motor fixedly installed inside the assembly frame, a rotating part fixedly installed on the output shaft of the stepper motor, a circular guide part fixedly installed at the bottom of the rotating part, a first docking part coaxially fixedly installed at the bottom of the circular guide part, an installation docking groove formed at the bottom of the first docking part, a second docking part movably installed inside the first docking part, an installation insert corresponding to the shape of the installation docking groove provided at the top of the second docking part, and a fixed bottom of the circular guide part... A central insertion rod is installed, which is movably inserted into the mounting insert. A first return spring is movably sleeved on the outside of the central insertion rod, located between the circular guide and the mounting insert. A mixing impeller is fixedly installed outside the second docking part, and a rotatable insertion part is fixedly installed at the bottom of the mixing impeller. An annular gasket is provided on the water flow delivery pipe. A cross assembly frame is fixedly installed at a corresponding position on the bottom of the inner wall of the water flow delivery pipe. A movable shaft seat is movably installed on the cross assembly frame. The rotatable insertion part is movably inserted into the movable shaft seat. A second return spring is movably installed inside the movable shaft seat. A sealing ring is fixedly installed inside the movable shaft seat, and the sealing ring is located outside the rotatable insertion part.

[0006] Preferably, a cross-shaped fixing seat is fixedly installed at the bottom of the movable shaft seat, and the cross-shaped fixing seat is in contact with the lower surface of the cross-shaped assembly frame. A first locking bolt is threaded onto the cross-shaped assembly frame, and the tightening part of the first locking bolt is in contact with the lower surface of the cross-shaped fixing seat.

[0007] Preferably, the cross-shaped fixing seat is threadedly connected to an adjusting bolt, and a lifting rotating plate is movably installed inside the movable shaft seat, and the lifting rotating plate is rotatably connected to the adjusting bolt.

[0008] Preferably, the cross-shaped fixing seat has a transverse auxiliary disassembly groove.

[0009] Preferably, multiple rectangular lifting bars are arranged in a ring around the central axis of the annular pad on the outer wall of the annular pad. A rectangular buckle is provided on the outer wall of the water delivery pipe at the position corresponding to the rectangular lifting bars. The rectangular lifting bars are movably inserted into the rectangular buckles. A second locking bolt is threaded onto the rectangular buckle, and the second locking bolt is supported at the corresponding position on the outer wall of the rectangular lifting bars.

[0010] Preferably, a rectangular connecting rod is fixedly installed on the inner wall of the annular pad, and an annular connector is provided between the near ends of the rectangular connecting rod for fixed connection. The rectangular connecting rod fixes the filter plate through the annular connector, and the filter plate is located within the structure composed of the cross assembly frame and the annular pad.

[0011] Preferably, a collar is movably sleeved on the rotatable insertion part, and multiple connecting ropes are arranged in a ring around the central axis of the collar. Two fixed balls are fixedly installed at the end of each connecting rope away from the collar, and the two fixed balls are located above and below the filter plate.

[0012] Preferably, a protective cover is provided outside the rotating part at the bottom of the stepper motor, a fixed seat is fixedly installed on the inner wall of the protective cover, an assembly rod is fixedly installed inside the fixed seat, a guide ball is rotatably connected to the end of the assembly rod away from the fixed seat, a guide groove is provided on the circular guide part, and the guide ball is rotatably connected to the guide groove.

[0013] Preferably, the mounting insert has a rectangular vertical groove, and a plate is horizontally inserted into the first mating part. The plate is located in the rectangular vertical groove and is slidably connected to the rectangular vertical groove. A buckle is movably sleeved on the plate, and a third locking bolt is threadedly connected to the buckle. The third locking bolt is threadedly installed inside the plate.

[0014] Preferably, a cushioning pad is movably mounted on the top of the mounting insert.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The stepper motor drives the mixed-flow blades to rotate, which in turn drives the water flow. The water flow also applies pressure to the mixed-flow blades along the central axis of the stepper motor. When the mixed-flow blades are under pressure, they move up and down in the water delivery pipe. When the first docking part and the second docking part move relative to each other, the rotatable insertion part at the bottom of the second docking part also moves up and down in the movable shaft seat. Through the action of the first return spring and the second return spring, the movement range of the first docking part and the second docking part is reduced. The mixed-flow blades move up and down in the water delivery pipe to adapt to the pressure generated by the water flow during the rotation of the mixed-flow blades. During the rotation of the blades, the pressure of the mixed-flow blades being impacted by the water flow can be effectively buffered.

[0017] 2. The lifting and rotating plate moves within the movable shaft seat under pressure, thereby changing the relative distance between the lifting and rotating plate and the rotatable insertion part, and changing the relative movement distance between the first docking part and the second docking part. When the rotation speed of the mixed flow blade is different, the flow rate of the water driven by the mixed flow blade is also different. The change in the relative movement distance between the first docking part and the second docking part can adapt to the different rotation speeds of the mixed flow blade.

[0018] 3. The lifting and lowering of the mixed-flow blades drives the lifting and lowering of the rotatable insertion part. When the rotatable insertion part lifts and lowers, it applies pressure to the collar, causing the collar to lift and lower. When the collar lifts and lowers, it applies pressure to the connecting rope. After the connecting rope is compressed, it will transfer the tension to the fixed ball. After the fixed ball is compressed, it will transfer the pressure to the filter plate, thereby causing the filter plate to vibrate, reducing the probability of the filter plate being blocked and ensuring that the filter plate can work continuously. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the present invention viewed from below.

[0021] Figure 3 This is a schematic diagram of the structure at the corresponding position of the assembly frame of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure at the corresponding position of the mixed-flow blade of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure at the corresponding position of the rectangular lifting bar of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure at the corresponding position of the rotatable insertion part of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure at the corresponding position of the annular pad of the present invention.

[0026] Figure 8This is a schematic diagram of the structure at the corresponding position of the collar in this invention.

[0027] Figure 9 This is a schematic diagram of the structure at the corresponding position of the cross-shaped fixing seat of the present invention.

[0028] Figure 10 This is a schematic diagram of the structure at the corresponding position of the lifting and rotating plate of the present invention.

[0029] Figure 11 This is a schematic diagram of the structure at the corresponding position of the first docking part of the present invention.

[0030] Figure 12 This is a schematic diagram of the structure at the corresponding position of the second docking part of the present invention.

[0031] Figure 13 This is a schematic diagram of the structure at the corresponding position of the guide ball of the present invention.

[0032] Figure 14 This is a schematic diagram of the structure at the corresponding position of the mounting docking groove in this invention.

[0033] In the diagram: 1. Water delivery pipe; 2. Conical guide pipe; 3. Assembly frame; 4. Stepper motor; 5. Rotating part; 6. Circular guide part; 7. First docking part; 701. Mounting docking groove; 8. Second docking part; 801. Mounting insert; 9. Central insertion rod; 10. First return spring; 11. Mixing impeller; 12. Rotatable insertion part; 13. Annular pad; 14. Cross assembly frame; 15. Movable shaft seat; 16. Second return spring; 17. Sealing ring; 18. Cross fixing seat; 19. First lock 20. Stop bolt; 21. Adjustment bolt; 22. Lifting and rotating plate; 23. Auxiliary disassembly groove; 24. Rectangular lifting bar; 25. Rectangular buckle; 26. Second locking bolt; 27. Rectangular connecting rod; 28. Annular connector; 29. ​​Filter plate; 30. Collar; 31. Connecting rope; 32. Fixed ball; 33. Protective cover; 34. Fixed seat; 35. Assembly rod; 36. Guide ball; 37. Guide groove; 38. Rectangular vertical groove; 39. Insert plate; 40. Buckle; 41. Third locking bolt; 42. Buffer pad. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] Please see Figures 1 to 14This invention provides a technical solution: a submersible shaft mixed-flow pump with sliding bearings, including a water delivery pipe 1, a conical guide pipe 2 fixedly installed on the top of the water delivery pipe 1, the water delivery pipe 1 having a tubular structure, and the conical guide pipe 2 having a frustum structure. The water delivery pipe 1 and the conical guide pipe 2 cooperate to form a structure that drives the water flow. An assembly frame 3 is fixedly installed on the conical guide pipe 2, and a stepper motor 4 is fixedly installed inside the assembly frame 3. The assembly frame 3 consists of multiple parts, such as a structure for fixing the stepper motor 4 and a structure for guiding the water flow direction. By guiding the water flow, the pump achieves water guidance and delivery. A rotating part 5 is fixedly installed on the output shaft of the stepper motor 4, and a circular guide part 6 is fixedly installed at the bottom of the rotating part 5. The output shaft of the motor 4 drives the rotating part 5 and the circular guide part 6 to rotate coaxially, thereby driving the rotating part 5 and the circular guide part 6 to rotate along the central axis, ensuring the normal rotation of the mixing blade 11 outside the second docking part 8. The bottom of the circular guide part 6 is coaxially fixedly mounted with the first docking part 7. The bottom of the first docking part 7 is provided with a mounting docking groove 701. The second docking part 8 is movably mounted inside the first docking part 7. The top of the second docking part 8 is provided with a mounting insert 801 corresponding to the shape of the mounting docking groove 701. The mounting docking groove 701 is a cross-shaped groove, and the mounting insert 801 is a cross-shaped insertion part. By inserting the mounting insert 801 into the mounting docking groove 701, the connection between the mounting insert 801 and the first docking part 7 is achieved. The rotation of the moving part 5, the circular guide part 6, and the first docking part 7 drives the rotation of the second docking part 8. A central insertion rod 9 is fixedly installed at the bottom of the circular guide part 6. When the first docking part 7 and the second docking part 8 move relative to each other, the central insertion rod 9 will also be inserted into the mounting insert 801. At the same time, when the central insertion rod 9 is inserted into the mounting insert 801, the first return spring 10 deforms and generates a reverse elastic force, which is the same as the reset after the first docking part 7 and the second docking part 8 move relative to each other. The central insertion rod 9 is movably inserted into the mounting insert 801. The first return spring 10 is movably sleeved on the outside of the central insertion rod 9. The first return spring 10 is located between the circular guide part 6 and the mounting insert 801. A mixing blade is fixedly installed on the outside of the second docking part 8. 11. The rotating impeller 11 drives the water flow from one end opening of the water delivery pipe 1 to the other end opening of the water delivery pipe 1, thereby driving the water flow. A rotatable insertion part 12 is fixedly installed at the bottom of the mixed-flow impeller 11. An annular pad 13 is provided on the water delivery pipe 1. A cross-shaped assembly frame 14 is fixedly installed at the corresponding position on the bottom of the inner wall of the water delivery pipe 1. The cross-shaped assembly frame 14 is used to install the structure that drives the lifting and lowering of the mixed-flow impeller 11. A movable shaft seat 15 is movably installed on the cross-shaped assembly frame 14. The rotatable insertion part 12 is movably inserted into the movable shaft seat 15. The rotatable insertion part 12 presses the second return spring 16 as it rises and falls within the movable shaft seat 15. The second return spring 16 deforms under pressure.The deformation of the second return spring 16 generates a reverse elastic force for resetting the rotatable insertion part 12. The second return spring 16 is movably mounted inside the movable shaft seat 15, and a sealing ring 17 is fixedly mounted inside the movable shaft seat 15, located outside the rotatable insertion part 12. The sealing ring 17 seals the connection between the rotatable insertion part 12 and the movable shaft seat 15, preventing liquid from seeping into the movable shaft seat 15.

[0036] A cross-shaped fixing seat 18 is fixedly installed at the bottom of the movable shaft seat 15, and the cross-shaped fixing seat 18 is in contact with the lower surface of the cross-shaped assembly frame 14. A first locking bolt 19 is threadedly connected to the cross-shaped assembly frame 14, and the tightening part of the first locking bolt 19 is in contact with the lower surface of the cross-shaped fixing seat 18. Through the design of the cross-shaped fixing seat 18 at the bottom of the movable shaft seat 15, the initial fixation of the movable shaft seat 15 after installation is achieved, and the movement of the movable shaft seat 15 is limited. Through the installation and fixation of the first locking bolt 19 on the cross-shaped assembly frame 14, the cross-shaped fixing seat 18 is fixed after installation, thereby assisting the movable shaft seat 15 to be quickly installed and disassembled, and facilitating the replacement of the movable shaft seat 15.

[0037] A locating bolt 20 is threaded onto the cross-shaped fixing seat 18. A lifting rotating plate 21 is movably installed inside the movable shaft seat 15, and the lifting rotating plate 21 is rotatably connected to the locating bolt 20. By rotating the locating bolt 20, the end of the locating bolt 20 inside the movable shaft seat 15 moves, thereby driving the lifting rotating plate 21 to move inside the movable shaft seat 15. The movement of the lifting rotating plate 21 inside the movable shaft seat 15 can apply pressure to the second return spring 16, and at the same time change the distance between the bottom end of the rotatable insertion part 12 and the lifting rotating plate 21, and change the relative movement distance between the first docking part 7 and the second docking part 8, thereby changing the adaptability.

[0038] The cross-shaped fixing seat 18 is provided with an auxiliary disassembly groove 22 in the horizontal direction. The design of the auxiliary disassembly groove 22 helps to move the cross-shaped fixing seat 18, making it easier to move the cross-shaped fixing seat 18.

[0039] Multiple rectangular lifting bars 23 are arranged in a ring around the central axis of the annular pad 13 on the outer wall of the annular pad 13. A rectangular buckle 24 is provided on the outer wall of the water conveying pipe 1 at the position corresponding to the rectangular lifting bars 23. The rectangular lifting bars 23 are movably inserted into the rectangular buckles 24. A second locking bolt 25 is threaded onto the rectangular buckle 24. The second locking bolt 25 is supported at the corresponding position on the outer wall of the rectangular lifting bars 23. With the presence of the rectangular lifting bars 23, the rectangular buckles 24 and the second locking bolt 25, the second locking bolt 25 is turned to move on the rectangular buckle 24, thereby fixing the rectangular lifting bars 23 after insertion. This facilitates the disassembly and installation of the annular pad 13 and the structure on the annular pad 13.

[0040] A rectangular connecting rod 26 is fixedly installed on the inner wall of the annular pad 13. An annular connector 27 is provided between the near ends of the rectangular connecting rod 26 for fixed connection. The rectangular connecting rod 26 fixes the filter plate 28 through the annular connector 27. The filter plate 28 is located in the structure composed of the cross assembly frame 14 and the annular pad 13. The frame structure composed of the annular pad 13, the cross assembly frame 14 and the annular connector 27 is used for the installation of the filter plate 28. The filter plate 28 can be disassembled by disassembling the structure composed of the annular pad 13, the cross assembly frame 14 and the annular connector 27.

[0041] A collar 29 is movably sleeved on the outside of the rotatable insertion part 12. Multiple connecting ropes 30 are arranged in a ring around the central axis of the collar 29. Two fixed balls 31 are fixedly installed at the end of each connecting rope 30 away from the collar 29. The two fixed balls 31 are located above and below the filter plate 28. The collar 29 moves up and down outside the rotatable insertion part 12. The structure on the rotatable insertion part 12 applies pressure to the collar 29. The collar 29 moves up and down after being pressed, thereby driving the connecting ropes 30 to move up and down. The connecting ropes 30 drive the two fixed balls 31 to move up and down. The movement of the fixed balls 31 pulls the filter plate 28 to vibrate, reducing the probability of the filter plate 28 being blocked.

[0042] A protective cover 32 is provided outside the rotating part 5 at the bottom of the stepper motor 4. A fixed seat 33 is fixedly installed on the inner wall of the protective cover 32. An assembly rod 34 is fixedly installed inside the fixed seat 33. A guide ball 35 is rotatably connected to the end of the assembly rod 34 away from the fixed seat 33. A guide groove 36 is provided on the circular guide part 6, and the guide ball 35 is in rolling connection with the guide groove 36. The rotating part 5 and the circular guide part 6 rotate, and the guide ball 35 rotates in the guide groove 36. The rotation of the circular guide part 6 is stabilized by the guide ball 35, and at the same time, lateral pressure is applied to the circular guide part 6 to reduce the vertical movement of the circular guide part 6, thereby ensuring the stability of the structure composed of the rotating part 5 and the circular guide part 6.

[0043] The mounting insert 801 has a rectangular vertical groove 37. A plate 38 is horizontally inserted into the first docking part 7. The plate 38 is located in the rectangular vertical groove 37 and is slidably connected to the rectangular vertical groove 37. A buckle 39 is movably sleeved on the plate 38. A third locking bolt 40 is threadedly connected to the buckle 39. The third locking bolt 40 is threadedly installed in the plate 38. By raising and lowering the plate 38 in the rectangular vertical groove 37, the raising and lowering of the first docking part 7 is further stabilized. At the same time, the buckle 39 and the stepper motor 4 form a structure to fix the end of the plate 38 after installation, preventing the plate 38 from easily detaching from the first docking part 7.

[0044] A buffer pad 41 is movably mounted on the top of the mounting insert 801 to buffer the contact position between the mounting insert 801 and the first mating part 7 and prevent excessive impact.

[0045] Working principle:

[0046] Step 1: The output shaft of the stepper motor 4 drives the rotating part 5 to rotate, which in turn drives the circular guide part 6 to rotate. The rotation of the circular guide part 6 drives the first docking part 7 to rotate, which in turn drives the second docking part 8 to rotate. The rotation of the second docking part 8 drives the mixing blade 11 outside the second docking part 8 to rotate. The rotation of the mixing blade 11 drives the water flow in the water delivery pipe 1 to flow in a specific direction. The water flow also applies pressure to the mixing blade 11 along the central axis of the stepper motor 4. When the mixing blade 11 is under pressure, it moves up and down within the water delivery pipe 1. This movement of the mixing blade 11 drives the second docking part 8 to move up and down. This movement of the second docking part 8 drives the mounting insert 801 to move within the mounting groove 701 on the first docking part 7. When the mounting insert 801 moves, the central insertion rod 9 at the bottom of the circular guide part 6 also moves within the mounting insert 801. When the distance between the docking parts 8 changes, the first return spring 10 is compressed and deformed. The deformation of the first return spring 10 generates a reverse elastic force, which is used to reset the mixing blade 11 after the stepper motor 4 stops. When the first docking part 7 and the second docking part 8 move relative to each other, the insert plate 38 on the first docking part 7 also moves within the rectangular vertical groove 37 to limit the lifting and lowering of the first docking part 7, thereby assisting the relative movement between the first docking part 7 and the second docking part 8. When the second docking part 8 lifts and lowers, the rotatable insert 12 at the bottom of the second docking part 8 also lifts and lowers within the movable shaft seat 15. When the rotatable insert 12 lifts and lowers within the movable shaft seat 15, it applies pressure to the second return spring 16, which also deforms and generates a reverse elastic force for the reset of the mixing blade 11. In this way, during the flow of water in the water delivery pipe 1, the mixing blade 11 will lift and lower within the water delivery pipe 1 to adapt to the pressure generated by the water flow during the rotation of the mixing blade 11.

[0047] Step 2: During the rotation of the structure consisting of rotating part 5 and circular guide part 6, the guide ball 35 will rotate within the guide groove 36 opened on the circular guide part 6, thereby guiding the circular guide part 6 during its rotation and assisting in the stable rotation of the circular guide part 6. At the same time, the guide groove 36 can apply lateral pressure to the circular guide part 6 to prevent the circular guide part 6 from deviating vertically and reduce the influence of water flow on the rotating part 5 and the circular guide part 6 during their rotation.

[0048] Step 3: By rotating the adjusting bolt 20, the adjusting bolt 20 moves threadedly on the cross-shaped fixing seat 18. When the adjusting bolt 20 moves threadedly on the cross-shaped fixing seat 18, it will apply pressure to the lifting rotating plate 21. The lifting rotating plate 21 moves within the movable shaft seat 15 under pressure, thereby changing the relative distance between the lifting rotating plate 21 and the rotatable insertion part 12, and changing the relative moving distance between the first docking part 7 and the second docking part 8. When the rotation speed of the mixing blade 11 is different, the flow rate of the water driven by the mixing blade 11 is also different. The change in the relative moving distance between the first docking part 7 and the second docking part 8 can adapt to the different rotation speeds of the mixing blade 11.

[0049] Step 4: By rotating the second locking bolt 25, the second locking bolt 25 is no longer fixed to the rectangular lifting bar 23. The rectangular lifting bar 23 is moved downward to disassemble it. After the rectangular lifting bar 23 is pulled out from the rectangular buckle 24, it drives the annular pad 13 to move. When the annular pad 13 moves, it drives the cross assembly frame 14 to move. When the cross assembly frame 14 moves, it drives the rectangular connecting rod 26 to move. The movement of the rectangular connecting rod 26 drives the filter plate 28 to move. The filter plate 28 is removed and cleaned. The first locking bolt 19 is removed from the cross assembly frame 14 by rotating it. After the first locking bolt 19 is removed, the cross fixing seat 18 and the movable shaft seat 15 on the cross fixing seat 18 are removed to replace the second return spring 16 in the movable shaft seat 15. This helps maintain the elasticity of the second return spring 16 so that it can function for a long time.

[0050] Step 5: The rotatable insertion part 12 is raised and lowered by the lifting and lowering of the mixing blade 11. When the rotatable insertion part 12 is raised and lowered, it will put pressure on the collar 29, causing the collar 29 to rise and fall. When the collar 29 rises and falls, it will put pressure on the connecting rope 30. After the connecting rope 30 is compressed, it will transfer the tension to the fixed ball 31. After the fixed ball 31 is compressed, it will transfer the pressure to the filter plate 28, thereby causing the filter plate 28 to vibrate, reducing the probability of the filter plate 28 being blocked, and ensuring that the filter plate 28 can work continuously.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A submersible shaft mixed-flow pump with a sliding bearing, comprising a water delivery pipe (1), a tapered guide pipe (2) fixedly installed at the top of the water delivery pipe (1), an assembly frame (3) fixedly installed on the tapered guide pipe (2), and a stepper motor (4) fixedly installed inside the assembly frame (3), characterized in that: The output shaft of the stepping motor (4) is fixedly provided with a rotating part (5), the bottom of the rotating part (5) is fixedly provided with a circular guide part (6), the bottom of the circular guide part (6) is coaxially fixedly provided with a first docking part (7), the bottom of the first docking part (7) is provided with a mounting docking groove (701), the first docking part (7) is movably provided with a second docking part (8), the top of the second docking part (8) is provided with a mounting insert (801) corresponding to the shape of the mounting docking groove (701), the bottom of the circular guide part (6) is fixedly provided with a center inserting rod (9), the center inserting rod (9) is movably inserted into the mounting insert (801), the first reset spring (10) is movably arranged outside the center inserting rod (9), the first reset spring (10) is located between the circular guide part (6) and the mounting insert (801), the second docking part (8) is fixedly provided with a mixed flow paddle (11) outside, the bottom of the mixed flow paddle (11) is fixedly provided with a rotatable inserting part (12), the water flow conveying pipe (1) is provided with an annular pad (13), the bottom of the inner wall of the water flow conveying pipe (1) is fixedly provided with a cross assembly frame (14) at a corresponding position, the cross assembly frame (14) is movably provided with a movable shaft seat (15), the rotatable inserting part (12) is movably inserted into the movable shaft seat (15), the movable shaft seat (15) is movably provided with a second reset spring (16), the movable shaft seat (15) is fixedly provided with a sealing ring (17) inside, and the sealing ring (17) is located outside the rotatable inserting part (12); The bottom of the movable shaft seat (15) is fixedly provided with a cross fixed seat (18), and the cross fixed seat (18) is attached to the lower surface of the cross assembly frame (14), and the first locking bolt (19) is threadedly connected to the cross assembly frame (14), and the screwed part of the first locking bolt (19) is attached to the lower surface of the cross fixed seat (18); The cross fixed seat (18) is threadedly connected with a position adjusting bolt (20), and the movable shaft seat (15) is movably provided with a lifting rotating plate (21) and is movably connected with the position adjusting bolt (20); The cross fixed seat (18) is transversely provided with an auxiliary dismounting groove (22); A plurality of rectangular lifting strips (23) are arranged in a ring shape on the outer wall of the annular pad (13) with the central axis of the annular pad (13) as the array center, the water flow conveying pipe (1) is provided with a rectangular buckle (24) at a position corresponding to the rectangular lifting strip (23) on the outer wall, the rectangular lifting strip (23) is movably inserted into the rectangular buckle (24), and the second locking bolt (25) is threadedly connected to the rectangular buckle (24) and supports the corresponding position of the outer wall of the rectangular lifting strip (23). The inner wall of the annular pad (13) is fixedly provided with a rectangular connecting rod (26), and the rectangular connecting rod (26) is fixedly connected by an annular connecting piece (27) arranged between the proximal ends of the rectangular connecting rod (26), and the rectangular connecting rod (26) is fixed to the filter plate (28) through the annular connecting piece (27), and the filter plate (28) is located in the inner structure of the cross assembly frame (14) and the annular pad (13); The outer movable sleeve of the rotatable insertion part (12) is provided with a sleeve ring (29), and a plurality of connecting ropes (30) are arranged in a ring distribution array with the sleeve ring (29) axis as the array center, and two fixed balls (31) are fixedly installed at the end of each connecting rope (30) away from the sleeve ring (29), and the two fixed balls (31) are located above and below the filter plate (28).

2. A submersible mixed flow pump with sliding bearing according to claim 1, characterized in that: The rotating part (5) at the bottom of the stepping motor (4) is provided with a protective cover (32) outside, the inner wall of the protective cover (32) is fixedly provided with a fixed seat (33), the fixed seat (33) is fixedly provided with an assembly rod (34) inside, the end of the assembly rod (34) away from the fixed seat (33) is rotatably connected with a guide sliding ball (35), the circular guide part (6) is provided with a guide sliding groove (36), and the guide sliding ball (35) is rotatably connected with the guide sliding groove (36).

3. A submersible mixed flow pump with sliding bearing according to claim 2, characterized in that: The rectangular vertical groove (37) is arranged in the installation insertion part (801), the first abutting part (7) is transversely inserted with the insertion plate (38), the insertion plate (38) is located in the rectangular vertical groove (37), and the insertion plate (38) is slidably connected with the rectangular vertical groove (37), the insertion plate (38) is movably sleeved with a sleeve buckle (39), the sleeve buckle (39) is threadedly connected with a third locking bolt (40), and the third locking bolt (40) is threadedly installed in the insertion plate (38).

4. The submersible mixed flow pump with sliding bearing according to claim 3, characterized in that: The top of the installation insertion part (801) is movably provided with a buffer pad (41).

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