Portable large-flow sewage pump

Abstract

The utility model provides a portable large-flow sewage pump which comprises a motor assembly and a pump shell, the pump shell is arranged at the output end of the motor assembly, a cavity is formed in the pump shell, an impeller is arranged on an output shaft of the motor assembly, the impeller extends into the cavity, the pump shell and the motor assembly are detachably connected, a connecting hole is formed in the middle of the impeller, and the connecting hole is communicated with the cavity. The impeller and an output shaft of the motor assembly are fixed through a screw, the cavity comprises a water inlet and a water outlet, the diameter of the water inlet is larger than that of the impeller, a necking ring is further detachably arranged in the water inlet, and the diameter of an inner hole of the necking ring is smaller than that of the impeller. The impeller is fixed to the output shaft of the motor assembly through screws, so that the impeller can detach the water inlet, when the impeller needs to be overhauled or replaced, the pump shell does not need to be detached, a sealing piece between the pump shell and the motor assembly is prevented from being damaged, meanwhile, replacement is more convenient, the diameter of the water inlet is reduced through the necking ring, and therefore the flow and lift are controlled.

Description

Technical Field

[0001] The utility model relates to a water pump, in particular to a portable large-flow sewage pump. Background Art

[0002] At present, a Chinese patent with announcement number CN210715284U discloses a sewage pump, including a pump body and a motor. The impeller is fixed on the output shaft of the motor. A plurality of connecting parts are provided at the bottom of the pump body. The connecting parts are evenly distributed around the central axis of the pump body. A support plate is commonly connected to the bottom of the connecting parts. Through the cooperation of the connecting parts and the support plate, the possibility of the sewage pump sinking into the mud is reduced.

[0003] The above patent still has shortcomings. In order to facilitate the transportation and maintenance of the pump body and the motor, the motor and the pump body are usually detachably connected, and a seal is set to ensure the sealing. In order to ensure the head, the water inlet of the pump body is usually smaller than the impeller. Therefore, the pump body and the motor need to be separated when repairing the impeller. However, separating the pump body and the motor may cause damage or contamination of the seal. Inexperienced users cannot ensure the integrity and proper installation of the seal, which may easily cause water to enter the motor. Too many disassembly times may also cause damage to the seal. Therefore, it is more troublesome to repair the impeller. Utility Model Content

[0004] In view of this, the utility model aims to provide a portable large-flow sewage pump, which has the advantage of convenient maintenance of the impeller.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a portable large-flow sewage pump, comprising a motor assembly and a pump casing, the pump casing being arranged at the output end of the motor assembly, a cavity being opened in the pump casing, an impeller being arranged on the output shaft of the motor assembly, the impeller extending into the cavity, the pump casing and the motor assembly being detachably connected, a connecting hole being opened in the middle of the impeller, the impeller and the output shaft of the motor assembly being fixed by screws, the cavity comprising a water inlet and a water outlet, the diameter of the water inlet being larger than the diameter of the impeller, a shrinking ring being detachably arranged in the water inlet, and the inner hole diameter of the shrinking ring being smaller than the diameter of the impeller.

[0006] Through the above-mentioned technical means, by making the water inlet diameter larger than the impeller diameter and fixing the impeller to the output shaft of the motor assembly with screws, the impeller can remove the water inlet. When the impeller needs to be repaired or replaced, there is no need to remove the pump casing, thereby preventing damage to the seal between the pump casing and the motor assembly. At the same time, replacement is more convenient, and the water inlet diameter is reduced by setting a reduction ring, thereby controlling the flow rate and head.

[0007] Preferably, the motor assembly includes a motor body and a motor housing, the motor housing and the pump housing are fixed by screws, a rubber pad is provided between the motor housing and the pump housing, and a pair of mechanical seals are provided between the motor housing and the output shaft of the motor body.

[0008] Through the above technical means, by setting a rubber pad between the motor casing and the pump casing, the connection sealing between the motor casing and the pump casing is increased, and by setting a mechanical seal between the output shaft of the motor body and the motor casing, the sealing of the output rod of the motor body when rotating is increased, thereby preventing water from entering the motor body and damaging the motor when the water pump is operating underwater.

[0009] Preferably, a support rod is further provided at the bottom of the pump housing, a fixing ring is provided at the bottom of the support rod, and a roller assembly is detachably provided on the fixing ring.

[0010] Through the above technical means, by arranging a roller assembly at the bottom of the fixed ring, the motor can be dragged more conveniently and labor-savingly.

[0011] Preferably, the roller assembly includes a wheel body and a mounting block, the wheel body and the mounting block are rotatably connected, an arc groove adapted to the fixing ring is opened on the mounting block, a rubber push block is also arranged on one side of the arc groove, a threaded hole 1 is opened at the side end of the arc groove, a butterfly screw is arranged in the threaded hole 1, a push plate is arranged on the top of the butterfly screw, and the push plate presses against the rubber push block.

[0012] Through the above technical means, the push plate is pushed by the butterfly screw, and the push plate pushes the rubber push block to press against the fixing ring, thereby realizing the rapid disassembly and assembly of the roller assembly and making the water pump adapt to different environments.

[0013] Preferably, the support rod is detachably connected to the pump housing, and the bottom of the pump housing is provided with two threaded holes in a circular array, and a water inlet hose is detachably provided at the water inlet through the two threaded holes, and a water outlet hose is detachably provided at the water outlet.

[0014] Through the above technical means, by detachably setting the water inlet hose at the water inlet, the sewage pump can be used for both water and land, reducing the probability of water pump damage when pumping water in unknown waters and increasing the applicability of the water pump.

[0015] Preferably, a clamping ear is further provided on the outside of the motor assembly, a clamping rod is provided on the clamping ear, locking blocks are provided on both sides of the clamping rod, the locking blocks are fixed to the clamping ear by screws, and the water outlet hose is wound between the clamping rod and the motor assembly.

[0016] Through the above technical means, by setting a clamping ear on the outside of the motor and fixing the locking block and the clamping ear by a screw, it is convenient to wrap the hose around the motor assembly, so as to cool the motor assembly when the water pump is pumping water on the shore.

[0017] Preferably, the impeller is a double-channel impeller.

[0018] Through the above technical means, the fluid delivery efficiency of the water pump is increased through the double-channel impeller, and the energy loss of the fluid during the delivery process is reduced. At the same time, the anti-clogging ability is strong, and it is not easy to get blocked when processing fluids containing impurities or particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural cross-sectional view of the first embodiment;

[0020] Figure 2 for Figure 1 Schematic diagram of part A;

[0021] Figure 3 is a partial cross-sectional view of the roller assembly;

[0022] Figure 4 It is a structural cross-sectional view of the second embodiment;

[0023] Figure 5 for Figure 4 Schematic diagram of part B;

[0024] Figure 6 It is a partial schematic diagram of the second embodiment.

[0025] Figure numerals: 1. Motor assembly; 2. Pump housing; 3. Motor body; 4. Motor housing; 6. Cavity; 7. Water inlet; 8. Water outlet; 9. Impeller; 10. Connecting hole; 11. Rubber pad; 12. Mechanical seal; 13. Support rod; 14. Fixing ring; 15. Roller assembly; 16. Wheel body; 17. Mounting block; 18. Arc groove; 19. Rubber push block; 20. Threaded hole one; 21. Butterfly screw; 22. Push plate; 23. Edge wrapping; 24. Threaded hole two; 25. Water inlet hose; 26. Water outlet hose; 27. Clamp ear; 28. Clamp rod; 29. ​​Lock block; 30. Shrink ring; 31. Inner hole. DETAILED DESCRIPTION

[0026] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0027] Embodiment 1:

[0028] A portable high-flow sewage pump, such as Figure 1 , Figure 2As shown, it includes a motor assembly 1 and a pump housing 2, the pump housing 2 is arranged at the output end of the motor assembly 1, the motor assembly 1 includes a motor body 3 and a motor housing 4, cooling oil is filled between the motor body 3 and the motor housing 4, a cavity 6 is opened in the pump housing 2, the cavity 6 includes a water inlet 7 and a water outlet 8, an impeller 9 is arranged on the output shaft of the motor body 3, the impeller 9 extends into the cavity 6 and drives the water body from the water inlet 7 to the water outlet 8, the pump housing 2 and the motor assembly 1 are detachably connected by screws, the impeller 9 is also detachably connected to the output shaft of the motor body 3, and a The connecting hole 10 is used to fix the impeller 9 and the output shaft of the motor assembly 1 through the connecting hole 10 and the screws. The diameter of the water inlet 7 is larger than the diameter of the impeller 9. A shrinking ring 30 is also removably provided in the water inlet 7. An inner hole 31 is provided in the middle of the shrinking ring 30. Water enters the cavity 6 from the inner hole 31. The diameter of the inner hole 31 is smaller than the diameter of the impeller 9. The shrinking ring 30 is used to control the water intake. The head and flow rate of the water pump can be changed by replacing the shrinking ring 30. When the impeller 9 needs to be repaired or replaced, the shrinking ring 30 is first removed, and then the screws are unscrewed to remove the impeller 9 from the water inlet 7.

[0029] A rubber pad 11 is also provided between the motor housing 4 and the pump housing 2 to prevent water from entering the motor housing 4. A pair of mechanical seals 12 are also provided between the motor housing 4 and the output shaft of the motor body 3 to ensure the sealing performance of the output shaft of the motor body 3 when it rotates.

[0030] like Figure 1 , Figure 3 As shown, four support rods 13 are also provided at the bottom of the pump housing 2, and a fixing ring 14 is commonly connected to the bottom of the four support rods 13. A roller assembly 15 is also detachably provided on the fixing ring 14, and the roller assembly 15 includes a wheel body 16 and a mounting block 17. The wheel body 16 and the mounting block 17 are rotatably connected. When the water pump is pushed, the wheel body 16 automatically rotates to the moving direction and rolls. An arc groove 18 adapted to the fixing ring 14 is provided on the mounting block 17, and a rubber push block 19 is also provided on one side of the arc groove 18. A threaded hole 20 is provided at the side end of the arc groove 18, and a butterfly screw 21 is provided in the threaded hole 20. A push plate 2 is provided on the top of the butterfly screw 21. 2. The push plate 22 is pressed against the rubber push block 19. When the roller assembly 15 needs to be installed, the butterfly screw 21 is rotated to make the push plate 22 separate from the rubber push block 19, and the fixing ring 14 is inserted between the rubber push block 19 and the side wall of the arc groove 18. The butterfly screw 21 is rotated in the opposite direction to make the push plate 22 press against the rubber push block 19, and the rubber push block 19 press against the fixing ring 14. The rubber push block 19 is also provided with a rim 23, and the rim 23 presses against the upper end of the fixing ring 14, so that the mounting block 17 is fixed on the fixing ring 14. When the water pump needs to be transported manually, the roller assemblies 15 are installed on both sides of the fixing ring 14, so that the transportation of the water pump is more convenient and more convenient to carry.

[0031] The impeller 9 is a double-channel impeller 9, which increases the fluid conveying efficiency of the water pump and reduces the energy loss of the fluid during the conveying process. At the same time, it has strong anti-clogging ability and is not prone to blockage when processing fluids containing impurities or particles.

[0032] Embodiment 2:

[0033] like Figure 4 , Figure 5 As shown, the support rod 13 is detachably connected to the pump casing 2 by screws, and the bottom of the pump casing 2 is also provided with threaded holes 24 in a circular array, and a water inlet hose 25 is provided at the water inlet 7. The threaded hole 24 can be used to install the shrinking ring 30, and the water inlet hose 25 can also be installed. The water outlet 8 is detachably provided with a water outlet hose 26. The support rod 13 and the fixing ring 14 can be used to prevent the water inlet hose 25 from being in contact with the ground. A clamping ear 27 is also provided on the outside of the motor assembly 1, and a clamping rod 28 is provided on the clamping ear 27. Locking blocks 29 are provided on both sides of the clamping rod 28. The locking blocks 29 and the clamping ears 27 are fixed by screws. The water outlet hose 26 is wound between the clamping rod 28 and the motor assembly 1, and the water outlet hose 26 is clamped by the clamping rod 28, thereby ensuring the cooling of the motor assembly 1, so that the water pump can be amphibious, and the applicability of the water pump is increased.

[0034] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A portable large-flow sewage pump, comprising a motor assembly (1) and a pump housing (2), wherein the pump housing (2) is arranged at the output end of the motor assembly (1), a cavity (6) is provided in the pump housing (2), an impeller (9) is provided on the output shaft of the motor assembly (1), and the impeller (9) extends into the cavity (6), wherein: The pump housing (2) and the motor assembly (1) are detachably connected, a connecting hole (10) is provided in the middle of the impeller (9), the impeller (9) and the output shaft of the motor assembly (1) are fixed by screws, the cavity (6) comprises a water inlet (7) and a water outlet (8), the diameter of the water inlet (7) is larger than the diameter of the impeller (9), a shrinking ring (30) is detachably provided in the water inlet (7), an inner hole (31) is provided in the middle of the shrinking ring (30), and the diameter of the inner hole (31) is smaller than the diameter of the impeller (9).

2. A portable high-flow sewage pump according to claim 1, characterized in that: The motor assembly (1) comprises a motor body (3) and a motor housing (4); the motor housing (4) and the pump housing (2) are fixed by screws; a rubber pad (11) is provided between the motor housing (4) and the pump housing (2); and a pair of mechanical seals (12) are provided between the motor housing (4) and the output shaft of the motor body (3).

3. A portable high-flow sewage pump according to claim 1, characterized in that: A support rod (13) is also provided at the bottom of the pump housing (2), a fixing ring (14) is provided at the bottom of the support rod (13), and a roller assembly (15) is also detachably provided on the fixing ring (14).

4. A portable high-flow sewage pump according to claim 3, characterized in that: The roller assembly (15) comprises a wheel body (16) and a mounting block (17), wherein the wheel body (16) and the mounting block (17) are rotatably connected to each other, an arc groove (18) adapted to the fixing ring (14) is provided on the mounting block (17), a rubber push block (19) is further provided on one side of the arc groove (18), a threaded hole (20) is provided on the side end of the arc groove (18), a butterfly screw (21) is provided in the threaded hole (20), a push plate (22) is provided on the top of the butterfly screw (21), and the push plate (22) abuts against the rubber push block (19).

5. A portable high-flow sewage pump according to claim 3, characterized in that: The support rod (13) is detachably connected to the pump housing (2); the bottom of the pump housing (2) is provided with two threaded holes (24) in an annular array; a water inlet hose (25) is detachably provided at the water inlet (7) through the two threaded holes (24); and a water outlet hose (26) is detachably provided at the water outlet (8).

6. A portable high-flow sewage pump according to claim 5, characterized in that: A clamping ear (27) is also provided on the outside of the motor assembly (1), a clamping rod (28) is provided on the clamping ear (27), locking blocks (29) are provided on both sides of the clamping rod (28), the locking blocks (29) and the clamping ear (27) are fixed by screws, and the water outlet hose (26) is arranged between the clamping rod (28) and the motor assembly (1).

7. A portable high-flow sewage pump according to claim 1, characterized in that: The impeller (9) is a double-channel impeller (9).

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