Self-priming pump

Abstract

The invention relates to the technical field of pumps and motors, in particular to a self-priming pump which comprises a bottom plate, a motor and a pump body are arranged on the bottom plate, a water inlet and a water outlet are formed in the pump body, outer pipe sleeves are arranged at the water inlet and the water outlet, inner pipe sleeves are arranged on the end faces of the outer pipe sleeves, and sliding sleeves are slidably connected to the outer walls of the inner pipe sleeves. A flange plate is fixed to the outer wall of the end, away from the pump body, of the sliding sleeve, a vertical plate and a connecting block are fixed to the outer wall of the end, close to the pump body, of the sliding sleeve, a barrel is fixed to the surface of the vertical plate, a guide hole is formed in the surface of the barrel, an insertion plate is fixed to the surface of the connecting block, and a limiting groove is formed in the surface of the insertion plate. The self-priming pump has the beneficial effects that the structure comprising the outer pipe sleeve and the inner pipe sleeve is designed and is in compatible connection with the flange plate, so that the self-priming pump can be flexibly adapted to a traditional pipeline system and a pipeline system provided with a flange, and high universality and adaptability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of pumps and motors, in particular to a self-priming pump. Background Art

[0002] Before starting a self-priming pump, the pump casing is filled with water or there is water in the pump casing itself. After starting, the impeller rotates at high speed to make the water in the impeller groove flow to the volute. At this time, a vacuum is formed at the inlet, causing the water inlet check valve to open, and the air in the suction pipe enters the pump and reaches the outer edge through the impeller groove.

[0003] Chinese patent CN204126905U discloses a coaxial self-priming pump, which includes a pump body, an impeller installed in the pump body, a water inlet joint and a water outlet joint on the pump cover, and a motor with a casing and a cover.

[0004] When using the above-mentioned self-priming pump, it is necessary to fix the pipeline to the water inlet joint and the water outlet joint, but the traditional water inlet joint and the water outlet joint are usually only provided with a flange or a pipe sleeve, so it can only be connected to a single form of pipeline, and the adaptability is low and needs to be improved. Therefore, the present invention proposes a self-priming pump to solve the above-mentioned problem. Summary of the invention

[0005] The object of the present invention is to provide a self-priming pump to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a self-priming pump, the self-priming pump comprising: a bottom plate, a motor and a pump body are arranged on the bottom plate, a water inlet and a water outlet are arranged on the pump body, an outer pipe sleeve is arranged at the water inlet and the water outlet, and an inner pipe sleeve is arranged at the end surface of the outer pipe sleeve;

[0007] The outer wall of the inner pipe sleeve is slidably connected with a sliding sleeve, a flange is fixed on the outer wall of the end of the sliding sleeve away from the pump body, a vertical plate and a connecting block are fixed on the outer wall of the end of the sliding sleeve close to the pump body, a cylinder is fixed on the surface of the vertical plate, a guide hole is opened on the surface of the cylinder, a plug plate is fixed on the surface of the connecting block, and a limiting groove is opened on the surface of the plug plate;

[0008] Side frames are fixed on the left and right sides of the outer wall of the outer tube sleeve, an inner cavity and a storage cavity are opened inside the side frame, a second rotating shaft and a first rotating shaft are arranged in the inner cavity, a worm wheel and a limit plate are fixed on the second rotating shaft, and a worm is fixed on the first rotating shaft.

[0009] Preferably, a guide rod is fixed on the surface of the pump body, and two groups of guide rods are provided. The two groups of guide rods are respectively located on the upper and lower sides of the outer pipe sleeve, and the end faces of the guide rods are chamfered. Two groups of vertical plates are provided, and the two groups of vertical plates are in a straight line. The outer wall of the guide rod and the inner wall of the guide hole are slidably connected.

[0010] Preferably, a sealing ring is fixed at the end face of the outer tube sleeve, the sealing ring is located on the outside of the inner tube sleeve, the end face of the sliding sleeve is in contact with and tightly pressed against the sealing ring, a slot is provided at the end face of the side frame, two groups of slots are provided, the two groups of slots are symmetrically distributed about the central axis of the side frame, two groups of connecting blocks are provided, the two groups of connecting blocks are in a straight line, two groups of plug plates are provided, the two groups of plug plates are symmetrically distributed about the central axis of the connecting blocks, the outer wall of the plug plate and the inner wall of the slot are slidably connected, a limiting groove is provided on the surface of the plug plate, and the limiting groove is close to the end of the plug plate.

[0011] Preferably, the slot is located next to the inner cavity, the storage cavity connects the slot and the inner cavity, one end of the first rotating shaft is located in the inner cavity and is rotatably connected to the side frame, the other end of the first rotating shaft extends out of the side frame and a turntable is fixed at the end face, the connection between the first rotating shaft and the outer wall of the side frame is rotatably connected, the second rotating shaft is located next to the first rotating shaft, both ends of the second rotating shaft are rotatably connected to the side frame, the worm gear is located at the center position of the second rotating shaft, and the worm and the worm gear are meshingly connected.

[0012] Preferably, the limit plates are provided with two groups, and the two groups of limit plates are symmetrically distributed about the worm gear. The storage cavity stores the limit plates. When the limit plates completely enter the storage cavity, the limit plates will not intersect with the slots. The limit plates can move in the storage cavity and the slots, and the limit plates can enter the limit slots.

[0013] Preferably, the outer surface of the turntable is provided with anti-slip grooves, a top plate is fixed to the surface of the side frame, the top plate is located directly above the turntable, a protective frame is rotatably connected to the top plate, a storage groove is provided on the inner wall of the protective frame, the turntable is located in the storage groove, and a hanging ring is fixed to the bottom of the protective frame.

[0014] Preferably, pads are fixed on the surface of the side frame, and two groups of pads are provided, and the two groups of pads are respectively located on both sides of the turntable.

[0015] Preferably, the pad is made of an elastic material, and the pad is in contact with and tightly pressed against two sides of the protective frame.

[0016] Preferably, four groups of side ears are fixed on both sides of the base plate, and mounting holes are opened on the surfaces of the side ears. The motor is fixed on the first base, and the first base is fixed to one side of the base plate by bolts. A first tube body is fixed to the end face of the motor shaft.

[0017] Preferably, the pump body is fixed on a second base, the second base is fixed to the other side of the base plate by bolts, a second tube body is fixed to the pump shaft end face of the pump body, and the first tube body and the second tube body are connected by a coupling.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a self-priming pump, 1. By designing a structure including an outer sleeve and an inner sleeve and realizing integral connection with a flange, the self-priming pump can be flexibly adapted to a traditional piping system and a piping system equipped with a flange, thereby realizing a high degree of versatility and adaptability; 2. By arranging a side frame, a first rotating shaft, a second rotating shaft, a worm gear, a worm, a limit plate, a turntable, a connecting block and a plug plate structure, the locking and releasing processes of the sleeve and the inner sleeve are convenient and quick, thereby making the installation and disassembly processes of the flange easier, thereby making the installation process of the pipeline with a flange more convenient; 3. By arranging a sealing ring at the end face of the outer sleeve, the sealing degree between the sleeve and the sleeve is increased, water leakage between the sleeve and the sleeve is avoided, and the sealing and use stability of the self-priming pump are improved; 4. By arranging a protective frame, the turntable is covered, thereby preventing external debris from being entangled on the turntable and causing the first rotating shaft to rotate without authorization, thereby improving the stability of the flange connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 A magnified view of the structure at center;

[0022] Figure 3 It is a side view of the overall structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the outer tube sleeve structure of the present invention;

[0024] Figure 5 for Figure 4 A magnified view of the structure at B in the middle;

[0025] Figure 6 This is a schematic diagram of the structure of the sliding sleeve of the present invention;

[0026] Figure 7 This is a schematic diagram of the protective frame structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the internal structure of the side frame of the present invention;

[0028] Fig. 9 This is a schematic diagram of the storage cavity structure of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the limiting plate of the present invention.

[0030] In the figure: 1, motor; 2, first base; 3, mounting hole; 4, side ear; 5, bottom plate; 6, machine shaft; 7, first tube body; 8, second tube body; 9, pump shaft; 10, second base; 11, pump body; 12, water inlet; 13, water outlet; 14, coupling; 15, outer sleeve; 16, magnetic block; 17, protective frame; 18, hanging ring; 19, plug board; 20, slot; 21, side frame; 22, guide rod ; 23. Inner tube sleeve; 24. Sealing ring; 26. Top plate; 27. Turntable; 28. Magnetic plate; 29. ​​Pad; 30. Flange; 31. Sliding sleeve; 32. Vertical plate; 33. Cylinder; 34. Guide hole; 35. Connecting block; 37. Limiting groove; 38. Inner cavity; 39. Worm wheel; 41. First rotating shaft; 42. Worm; 43. Storage cavity; 44. Second rotating shaft; 45. Limiting plate; 47. Anti-slip texture. DETAILED DESCRIPTION

[0031] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0032] Example 1: Please refer to Figures 1 to 10 The present invention provides a technical solution: a self-priming pump, comprising: a bottom plate 5, a motor 1 and a pump body 11 are arranged on the bottom plate 5, a water inlet 12 and a water outlet 13 are arranged on the pump body 11, an outer pipe sleeve 15 is arranged at the water inlet 12 and the water outlet 13, and an inner pipe sleeve 23 is arranged at the end surface of the outer pipe sleeve 15;

[0033] The outer wall of the inner sleeve 23 is slidably connected with a sleeve 31, a flange 30 is fixed on the outer wall of the end of the sleeve 31 away from the pump body 11, a vertical plate 32 and a connecting block 35 are fixed on the outer wall of the end of the sleeve 31 close to the pump body 11, a cylinder 33 is fixed on the surface of the vertical plate 32, a guide hole 34 is opened on the surface of the cylinder 33, a plug plate 19 is fixed on the surface of the connecting block 35, and a limiting groove 37 is opened on the surface of the plug plate 19;

[0034] Side frames 21 are fixed to the left and right sides of the outer wall of the outer tube sleeve 15. An inner cavity 38 and a receiving cavity 43 are provided inside the side frame 21. A second rotating shaft 44 and a first rotating shaft 41 are arranged in the inner cavity 38. A worm wheel 39 and a limit plate 45 are fixed to the second rotating shaft 44. A worm 42 is fixed to the first rotating shaft 41.

[0035] When in use, by designing a structure including an outer pipe sleeve 15 and an inner pipe sleeve 23 and realizing an integral connection with a flange 30, the self-priming pump can be flexibly adapted to a traditional piping system and a piping system equipped with a flange, thereby achieving a high degree of versatility and adaptability.

[0036] Embodiment 2: Based on Embodiment 1, a guide rod 22 is fixed on the surface of the pump body 11. The guide rod 22 is provided with two groups. The two groups of guide rods 22 are respectively located on the upper and lower sides of the outer sleeve 15. The end faces of the guide rods 22 are chamfered. There are two groups of vertical plates 32. The two groups of vertical plates 32 are in a straight line. The outer wall of the guide rod 22 and the inner wall of the guide hole 34 are slidably connected.

[0037] When in use, when the sliding sleeve 31 and the inner tube sleeve 23 are connected, the guide rod 22 is first inserted into the guide hole 34 in the cylinder 33, and continuously pushed, which can provide guidance for the movement of the plug board 19, thereby achieving pre-positioning, ensuring that the subsequent plug board 19 can be correspondingly inserted into the slot 20, and improving the smoothness of the connection;

[0038] A sealing ring 24 is fixed at the end face of the outer sleeve 15, and the sealing ring 24 is located on the outside of the inner sleeve 23. The end face of the sliding sleeve 31 contacts and presses against the sealing ring 24. A slot 20 is provided at the end face of the side frame 21. There are two groups of slots 20, and the two groups of slots 20 are symmetrically distributed about the central axis of the side frame 21. There are two groups of connecting blocks 35, and the two groups of connecting blocks 35 are on a straight line. There are two groups of plugging plates 19, and the two groups of plugging plates 19 are symmetrically distributed about the central axis of the connecting blocks 35. The outer wall of the plugging plate 19 and the inner wall of the slot 20 are slidably connected. A limiting groove 37 is provided on the surface of the plugging plate 19, and the limiting groove 37 is close to the end of the plugging plate 19.

[0039] When in use, after the sliding sleeve 31 and the inner pipe sleeve 23 are butted, the end surface of the sliding sleeve 31 will contact and press against the provided sealing ring 24, thereby increasing the sealing degree between the sliding sleeve 31 and the pipe sleeve, avoiding water leakage between the sliding sleeve 31 and the pipe sleeve, and improving the sealing property and use stability of the self-priming pump;

[0040] The slot 20 is located beside the inner cavity 38, and the storage cavity 43 connects the slot 20 and the inner cavity 38. One end of the first rotating shaft 41 is located in the inner cavity 38 and is rotatably connected to the side frame 21. The other end of the first rotating shaft 41 extends out of the side frame 21 and a rotating disk 27 is fixed at the end surface. The connection between the first rotating shaft 41 and the outer wall of the side frame 21 is rotatably connected. The second rotating shaft 44 is located beside the first rotating shaft 41. Both ends of the second rotating shaft 44 are rotatably connected to the side frame 21. The wheel 39 is located at the center of the second rotating shaft 44, the worm 42 and the worm wheel 39 are meshed and connected, two groups of limit plates 45 are provided, and the two groups of limit plates 45 are symmetrically distributed about the worm wheel 39, and the storage cavity 43 stores the limit plates 45. When the limit plates 45 completely enter the storage cavity 43, the limit plates 45 will not intersect with the slot 20, and the limit plates 45 can move in the storage cavity 43 and the slot 20, and the limit plates 45 can enter the limit groove 37;

[0041] When in use, before the sliding sleeve 31 and the inner tube sleeve 23 are connected, the turntable 27 is manually rotated to drive the worm 42 to rotate, and the worm wheel 39 is driven to rotate under the meshing action, thereby driving the limit plate 45 to rotate, and the limit plate 45 is rotated into the storage cavity 43 to prevent the limit plate 45 from intersecting with the slot 20 at this time, and then the sliding sleeve 31 and the inner tube sleeve 23 are docked. As the sliding sleeve 31 is continuously pushed forward, the plug plate 19 will be correspondingly inserted into the slot 20, and the sliding sleeve 31 and the inner tube sleeve 23 are aligned. When connected, the plug plate 19 will be fully inserted into the slot 20. At this time, the limit groove 37 is located at the storage cavity 43. At this time, by rotating the turntable 27, the limit plate 45 will be driven to rotate, so that the limit plate 45 enters the limit groove 37, thereby realizing the limiting effect. The setting of the worm 42 and the worm wheel 39 prevents the limit plate 45 from rotating without authorization and improves the stability of the limit. The inner wall of the limit groove 37 is chamfered, and the inner wall of the limit groove 37 and the outer wall of the limit plate 45 are slidably connected to ensure that the limit plate 45 smoothly enters the limit groove 37.

[0042] Embodiment 3: On the basis of Embodiment 2, the outer surface of the turntable 27 is provided with anti-slip grooves 47, a top plate 26 is fixed to the surface of the side frame 21, the top plate 26 is located directly above the turntable 27, a protective frame 17 is rotatably connected to the top plate 26, a storage groove is provided on the inner wall of the protective frame 17, the turntable 27 is located in the storage groove, and a hanging ring 18 is fixed to the bottom of the protective frame 17;

[0043] When in use, the anti-skid pattern 47 can increase friction and improve the stability when the turntable 27 is manually rotated. The protective frame 17 is provided to cover the turntable 27, thereby preventing foreign debris from being entangled on the turntable 27 and causing the first rotating shaft 41 to rotate without authorization, thereby improving the stability of the connection of the flange 30, and the hanging ring 18 is provided for convenience in manual dialing;

[0044] A pad 29 is fixed on the surface of the side frame 21. The pad 29 is provided with two groups. The two groups of pads 29 are respectively located on both sides of the turntable 27. The pad 29 is made of elastic material. The pad 29 and the two sides of the protective frame 17 are in contact and pressed tightly. A magnetic block 16 and a magnetic plate 28 are fixed on the surface of the side frame 21. The magnetic block 16 is located above the top plate 26, and the magnetic plate 28 is located below the turntable 27. Both sides of the magnetic plate 28 are connected to the two groups of pads 29. The inner bottom wall and the outer wall of the protective frame 17 are made of ferromagnetic material. The magnetic plate 28 attracts the inner bottom wall of the protective frame 17, and the magnetic block 16 attracts the outer wall of the protective frame 17.

[0045] During use, when the protective frame 17 covers the turntable 27, the magnetic plate 28 will attract the inner bottom wall of the protective frame 17 to ensure the stability of the protective frame 17. At the same time, the pad 29 contacts and presses against both sides of the protective frame 17 to improve the airtightness of the protective frame 17 and prevent debris from entering the protective frame 17 through the gaps on both sides. When the turntable 27 needs to be operated, the hanging ear is moved to drive the protective frame 17 to rotate, so that the outer wall of the protective frame 17 contacts the magnetic block 16, and the magnetic block 16 will attract the protective frame 17 to ensure the stability of the protective frame 17 and facilitate the operation of the turntable 27.

[0046] Embodiment 4: On the basis of embodiment 3, four groups of side ears 4 are fixed on both sides of the bottom plate 5, and mounting holes 3 are opened on the surface of the side ears 4. The motor 1 is fixed on the first base 2, and the first base 2 is fixed to one side of the bottom plate 5 by bolts. The first tube body 7 is fixed at the end face of the shaft 6 of the motor 1, and the pump body 11 is fixed on the second base 10, and the second base 10 is fixed to the other side of the bottom plate 5 by bolts. The second tube body 8 is fixed at the end face of the pump shaft 9 of the pump body 11, and the first tube body 7 and the second tube body 8 are connected by a coupling 14;

[0047] When in use, the pump shaft 9 is provided with an impeller (not shown in the figure) located inside the pump body 11. When the self-priming pump is used, the pipeline is connected to the water inlet 12 and the water outlet 13, and then the motor 1 is started, and the motor 1 is used to drive the machine shaft 6 to rotate. At this time, the machine shaft 6 drives the coupling 14 and the pump shaft 9 to rotate synchronously, and the pump shaft 9 drives the impeller to rotate, so that the centrifugal force generated by the impeller is used to suck water into the pump body 11 along the water inlet 12, and then discharged along the water outlet 13, so as to realize the stable operation of the self-priming pump.

[0048] Working principle: In actual use, before the sliding sleeve 31 and the inner tube sleeve 23 are connected, the turntable 27 is manually rotated to drive the worm 42 to rotate, and the worm wheel 39 is driven to rotate under the meshing action, thereby driving the limit plate 45 to rotate, and the limit plate 45 is rotated into the storage cavity 43 to prevent the limit plate 45 from intersecting with the slot 20 at this time, and then the sliding sleeve 31 and the inner tube sleeve 23 are docked. As the sliding sleeve 31 is continuously pushed forward, the plug plate 19 will be correspondingly inserted into the slot 20. When the sliding sleeve 31 and the inner tube sleeve 23 are docked, the plug plate 19 will be completely inserted into the slot 20. At this time, the limit groove 37 is located at the storage cavity 43. By rotating the turntable 27, the limit plate 45 will be driven to rotate, so that the limit plate 45 enters the limit groove 37, thereby realizing the limit effect, thereby completing the installation of the flange 30; when it is necessary to contact the flange 30, by manually rotating the turntable 27 in the opposite direction, the worm 42 will be driven to rotate, and then the worm wheel 39 will be driven to rotate, and then the limit plate 45 will be driven to rotate, so that the limit plate 45 is rotated as a whole into the storage cavity 43, so that the limit plate 45 is moved out of the limit groove 37, and at the same time, the limit plate 45 and the slot 20 have no intersection, thereby contacting the limit, and by pulling the flange 30, the plug plate 19 can be pulled out of the slot 20, and then the flange 30 can be removed.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-priming pump, comprising: A bottom plate (5), characterized in that: a motor (1) and a pump body (11) are arranged on the bottom plate (5); a water inlet (12) and a water outlet (13) are arranged on the pump body (11); an outer pipe sleeve (15) is arranged at the water inlet (12) and the water outlet (13); an inner pipe sleeve (23) is arranged at the end surface of the outer pipe sleeve (15); A sliding sleeve (31) is slidably connected to the outer wall of the inner tube sleeve (23); a flange (30) is fixed to the outer wall of the end of the sliding sleeve (31) away from the pump body (11); a vertical plate (32) and a connecting block (35) are fixed to the outer wall of the end of the sliding sleeve (31) close to the pump body (11); a cylinder (33) is fixed to the surface of the vertical plate (32); a guide hole (34) is provided on the surface of the cylinder (33); a plug plate (19) is fixed to the surface of the connecting block (35); a limiting groove (37) is provided on the surface of the plug plate (19); Side frames (21) are fixed on the left and right sides of the outer wall of the outer tube sleeve (15); an inner cavity (38) and a storage cavity (43) are provided inside the side frame (21); a second rotating shaft (44) and a first rotating shaft (41) are arranged in the inner cavity (38); a worm wheel (39) and a limit plate (45) are fixed on the second rotating shaft (44); and a worm (42) is fixed on the first rotating shaft (41).

2. A self-priming pump according to claim 1, characterized in that: A guide rod (22) is fixed on the surface of the pump body (11). The guide rod (22) is provided with two groups. The two groups of guide rods (22) are respectively located at the upper and lower sides of the outer pipe sleeve (15). The end faces of the guide rods (22) are chamfered. Two groups of vertical plates (32) are provided. The two groups of vertical plates (32) are on a straight line. The outer wall of the guide rod (22) and the inner wall of the guide hole (34) are slidably connected.

3. A self-priming pump according to claim 1, characterized in that: A sealing ring (24) is fixed at the end surface of the outer tube sleeve (15), and the sealing ring (24) is located outside the inner tube sleeve (23). The end surface of the sliding sleeve (31) contacts and presses against the sealing ring (24). A slot (20) is provided at the end surface of the side frame (21). The slots (20) are provided in two groups, and the two groups of slots (20) are symmetrically distributed about the central axis of the side frame (21). Two groups of connecting blocks (35) are provided, and the two groups of connecting blocks (35) are on a straight line. Two groups of plugging plates (19) are provided, and the two groups of plugging plates (19) are symmetrically distributed about the central axis of the connecting blocks (35). The outer wall of the plugging plate (19) and the inner wall of the slot (20) are slidably connected. A limiting groove (37) is provided on the surface of the plugging plate (19), and the limiting groove (37) is close to the end of the plugging plate (19).

4. A self-priming pump according to claim 3, characterized in that: The slot (20) is located beside the inner cavity (38), and the storage cavity (43) connects the slot (20) and the inner cavity (38). One end of the first rotating shaft (41) is located in the inner cavity (38) and is rotatably connected to the side frame (21). The other end of the first rotating shaft (41) extends out of the side frame (21) and is fixed with a rotating disk (27) at the end surface. The first rotating shaft (41) and the outer wall of the side frame (21) are connected in a rotatable manner. The second rotating shaft (44) is located beside the first rotating shaft (41), and both ends of the second rotating shaft (44) are rotatably connected to the side frame (21). The worm wheel (39) is located at the center of the second rotating shaft (44), and the worm (42) and the worm wheel (39) are meshingly connected.

5. A self-priming pump according to claim 1, characterized in that: The limiting plates (45) are provided with two groups, and the two groups of limiting plates (45) are symmetrically distributed about the worm gear (39). The storage cavity (43) stores the limiting plates (45). When the limiting plates (45) completely enter the storage cavity (43), the limiting plates (45) will not intersect with the slots (20). The limiting plates (45) can move in the storage cavity (43) and the slots (20), and the limiting plates (45) can enter the limiting grooves (37).

6. A self-priming pump according to claim 4, characterized in that: The outer surface of the turntable (27) is provided with anti-skid patterns (47), a top plate (26) is fixed to the surface of the side frame (21), the top plate (26) is located directly above the turntable (27), a protective frame (17) is rotatably connected to the top plate (26), a storage groove is provided on the inner wall of the protective frame (17), the turntable (27) is located in the storage groove, and a hanging ring (18) is fixed to the bottom of the protective frame (17).

7. A self-priming pump according to claim 1, characterized in that: A pad (29) is fixed on the surface of the side frame (21), and two groups of pads (29) are provided. The two groups of pads (29) are respectively located on both sides of the rotating disk (27).

8. A self-priming pump according to claim 7, characterized in that: The pad (29) is made of an elastic material, and the pad (29) and the protective frame (17) are in contact and pressed against each other at two sides.

9. A self-priming pump according to claim 1, characterized in that: Four groups of side ears (4) are fixed on both sides of the bottom plate (5), and mounting holes (3) are provided on the surfaces of the side ears (4). The motor (1) is fixed on the first base (2), and the first base (2) is fixed to one side of the bottom plate (5) by bolts. A first tube body (7) is fixed on the end surface of the shaft (6) of the motor (1).

10. A self-priming pump according to claim 1, characterized in that: The pump body (11) is fixed on the second base (10), and the second base (10) is fixed to the other side of the base plate (5) by bolts. A second pipe body (8) is fixed to the end surface of the pump shaft (9) of the pump body (11), and the first pipe body (7) and the second pipe body (8) are connected by a coupling (14).

Images