Large-flow submersible pump

Abstract

The utility model provides a large-flow submersible pump, which relates to the technical field of submersible pumps, and comprises a motor, a pump body and a diversion channel, the lower part of the motor is provided with a thrust bearing seat, the bottom end of the motor is provided with a base, the upper end of the motor is provided with a pump shaft, the pump shaft is positioned in the center of the pump body, the middle part of the pump body is provided with a water inlet section assembly, and the water inlet section assembly is provided with a water outlet. An upper flow guide shell assembly is arranged on the upper portion of the pump body, a flow guide channel is installed in the upper flow guide shell assembly, a check valve assembly is installed at the upper end of the upper flow guide shell assembly, the outer side of the upper portion of the motor is sleeved with a motor connecting frame, a shaft rod lower connecting sleeve is arranged above the motor connecting frame, and the lower portion of the pump shaft is sleeved with the shaft rod lower connecting sleeve. Water flow can be conveniently and rapidly pumped in, the water flow entering the pump body flows into the flow guide channel in a wave-shaped curve track mode, water flow impact pressure and abrasion can be reduced, water flow reverse flow is effectively avoided, use is more stable and reliable, and durability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to a large-flow submersible pump. Background Art

[0002] Submersible pumps are important equipment for extracting water from deep wells. When in use, the entire unit dives into the water to extract groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and fountain landscaping. Hot water submersible pumps are used for hot spring bathing. They can also be used to extract groundwater from deep wells, and can also be used in water extraction projects such as rivers, reservoirs, and canals.

[0003] In the manual of a large-flow submersible pump in the prior art (publication number CN216950893U), it is mentioned that "the submersible pump is provided with a vertical rod mechanism that can protect the submersible pump, and the vertical rod mechanism includes a fixed plate and a base. The fixed plate is located on the outside of the submersible pump, and the lower end of the fixed plate is fixedly installed on the upper end of the base. A baffle is provided on the upper end of the fixed plate, and a rotating shaft is rotatably installed between the baffle and the fixed plate. A spring 2 is fixedly installed on the side end of the baffle, and a plurality of cylindrical grooves are penetrated through the upper end of the base, and a telescopic rod is fixedly installed on the upper end of the base." However, the water flow introduced by the high-speed rotation of the rotating shaft in the submersible pump body of the prior art is transported in a straight line, resulting in greater impact pressure on the impeller and the inside of the pump body, and a higher wear rate, which affects its service life. Utility Model Content

[0004] In order to overcome the defects of the prior art, a large-flow submersible pump is now provided to solve the problem that the water flow introduced by the high-speed rotation of the rotating shaft in the submersible pump body of the prior art is transported in a linear manner, resulting in greater impact pressure and higher wear rate inside the impeller and the pump body, thus affecting its service life.

[0005] To achieve the above-mentioned purpose, a large-flow submersible pump is provided, including a motor, a pump body and a diversion channel, a thrust bearing seat is provided at the lower part of the motor, and a base is provided at the bottom end of the motor, a pump shaft is installed at the upper end of the motor, and the pump shaft is located at the center of the pump body, a water inlet section assembly is provided in the middle part of the pump body, and an upper diversion shell assembly is provided at the upper part of the pump body, a diversion channel is installed in the upper diversion shell assembly, and a check valve assembly is installed at the upper end of the upper diversion shell assembly.

[0006] Furthermore, a motor connecting frame is sleeved on the outer side of the upper part of the motor, and a shaft lower connecting sleeve is arranged above the motor connecting frame. The shaft lower connecting sleeve is sleeved on the outer side of the lower part of the pump shaft, and the outer end of the shaft lower connecting sleeve is fixed on the inner wall of the pump body.

[0007] Furthermore, a coupling is installed at the lower part of the pump shaft, and a shaft connecting sleeve is arranged on the inner side of the lower part of the pump body, and the shaft connecting sleeve is sleeved outside the pump shaft.

[0008] Furthermore, multiple sets of impellers are arranged on both sides of the middle of the pump shaft, multiple sets of inner sleeves are sleeved on the upper part of the pump shaft, and the upper end of the pump shaft is sleeved in the connecting sleeve on the shaft rod.

[0009] Furthermore, a plurality of water inlet holes are arranged on the outer side surface of the water inlet joint assembly, and an upper fixing plate is fixed to the outer upper end of the water inlet joint assembly, a lower fixing plate is fixed to the outer lower end of the water inlet joint assembly, and a plurality of fences are fixed between the upper fixing plate and the lower fixing plate.

[0010] Furthermore, the diversion channel is sleeved outside the upper part of the pump shaft, and the lower port of the diversion channel leads to the water inlet section assembly, and the upper port of the diversion channel leads to the check valve assembly.

[0011] Furthermore, a first connecting flange is provided at the upper end of the pump body, and a second connecting flange is provided at the lower end of the check valve assembly, multiple sets of fastening bolts are installed between the second connecting flange and the first connecting flange, and a water outlet is provided at the upper end of the check valve assembly.

[0012] The beneficial effects of the utility model are:

[0013] 1. The arrangement of the thrust bearing seat, the base and the motor connecting frame in the utility model helps to stabilize the upper and lower parts of the motor, making its installation safer and more reliable; at the same time, the arrangement of the lower connecting sleeve of the shaft and the middle connecting sleeve of the shaft installed at the lower part of the pump shaft is to support the lower part of the pump shaft, making the lower part of the shaft rod more tightly and stably connected.

[0014] 2. The utility model allows water to flow in through the water inlet hole on the water inlet joint assembly. The upper fixed plate, fence and lower fixed plate arranged on the outside constitute a fence enclosure structure, which helps to avoid collision with large stones or jamming of branches, and provides safer and more reliable protection for the water inlet joint assembly.

[0015] 3. The setting of the flow guide channel in the utility model makes it more convenient for water to flow in in a wave-shaped curve trajectory. On the one hand, it can reduce the impact pressure of the water flow, and on the other hand, it can reduce the wear on the inside of the pump body, making it more durable; at the same time, the setting of the check valve assembly is to flexibly control the backflow of water after stopping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure arrangement on the pump shaft of an embodiment of the utility model;

[0019] Figure 4Schematic diagram of the flow guide channel of an embodiment of the utility model.

[0020] In the figure: 1. Motor; 10. Thrust bearing seat; 11. Base; 12. Motor connecting frame; 13. Lower connecting sleeve of shaft; 14. Coupling; 15. Inner sleeve; 16. Pump shaft; 17. Impeller; 18. Upper connecting sleeve of shaft; 2. Pump body; 20. Middle connecting sleeve of shaft; 21. Water inlet section assembly; 22. Water inlet hole; 23. Upper fixing plate; 24. Fence; 25. Lower fixing plate; 26. Upper guide shell assembly; 27. First connecting flange; 3. Guide channel; 4. Check valve assembly; 40. Second connecting flange; 41. Water outlet. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0023] Figure 1 It is a front view schematic diagram of an embodiment of the utility model, Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model, Figure 3 Schematic diagram of the pump shaft structure of the utility model embodiment and Figure 4 Schematic diagram of the flow guide channel of an embodiment of the utility model.

[0024] Reference Figures 1 to 4 As shown, the utility model provides a large-flow submersible pump, including a motor 1, a pump body 2 and a diversion channel 3, a thrust bearing seat 10 is provided at the lower part of the motor 1, and a base 11 is provided at the bottom end of the motor 1, a pump shaft 16 is installed at the upper end of the motor 1, and the pump shaft 16 is located at the center of the pump body 2, a water inlet section assembly 21 is provided in the middle part of the pump body 2, and an upper diversion shell assembly 26 is provided at the upper part of the pump body 2, the diversion channel 3 is installed in the upper diversion shell assembly 26, and a check valve assembly 4 is installed at the upper end of the upper diversion shell assembly 26.

[0025] In this embodiment, a motor connecting frame 12 is sleeved on the outer side of the upper part of the motor 1, and a lower shaft connecting sleeve 13 is arranged above the motor connecting frame 12, the lower shaft connecting sleeve 13 is sleeved on the outer side of the lower part of the pump shaft 16, and the outer end of the lower shaft connecting sleeve 13 is fixed on the inner side wall of the pump body 2; a coupling 14 is installed on the lower part of the pump shaft 16, and a middle shaft connecting sleeve 20 is arranged on the inner side of the lower part of the pump body 2, and the middle shaft connecting sleeve 20 is sleeved on the outside of the pump shaft 16; multiple groups of impellers 17 are arranged on the left and right sides of the middle part of the pump shaft 16, and multiple groups of inner sleeves 15 are sleeved on the upper part of the pump shaft 16, and the upper end of the pump shaft 16 is sleeved in the upper shaft connecting sleeve 18.

[0026] As a preferred embodiment, the arrangement of the thrust bearing seat 10, the base 11 and the motor connecting frame 12 in the utility model helps to stabilize the upper and lower parts of the motor 1, making its installation safer and more reliable; at the same time, the lower shaft connecting sleeve 13 and the middle shaft connecting sleeve 20 installed at the lower part of the pump shaft 16 are arranged to support the lower part of the pump shaft 16, making the lower part of the shaft connection tighter and more stable.

[0027] In this embodiment, a plurality of water inlet holes 22 are arranged on the outer side surface of the water inlet joint assembly 21, and an upper fixed plate 23 is fixed to the outer upper end of the water inlet joint assembly 21, a lower fixed plate 25 is fixed to the outer lower end of the water inlet joint assembly 21, and a plurality of fences 24 are fixed between the upper fixed plate 23 and the lower fixed plate 25.

[0028] As a preferred embodiment, the utility model allows water to enter through the water inlet hole 22 on the water inlet joint assembly 21, and the upper fixed plate 23, fence 24 and lower fixed plate 25 arranged on the outside constitute a fence enclosure structure, which helps to avoid collision with large stones or jamming of branches, and the protection of the water inlet joint assembly 21 is safer and more reliable.

[0029] In this embodiment, the diversion channel 3 is sleeved outside the upper part of the pump shaft 16, and the lower port of the diversion channel 3 leads to the water inlet section assembly 21, and the upper port of the diversion channel 3 leads to the check valve assembly 4; the upper end of the pump body 2 is provided with a first connecting flange 27, and the lower end of the check valve assembly 4 is provided with a second connecting flange 40, a plurality of sets of fastening bolts are installed between the second connecting flange 40 and the first connecting flange 27, and the upper end of the check valve assembly 4 is provided with a water outlet 41.

[0030] As a preferred embodiment, the setting of the guide channel 3 in the utility model makes it more convenient for water to flow in in a wavy curve trajectory. On the one hand, it can reduce the impact pressure of the water flow, and on the other hand, it can reduce the wear on the inside of the pump body, making it more durable; at the same time, the setting of the check valve assembly 4 is to flexibly control the backflow of water after stopping.

[0031] The utility model can effectively solve the problem that the water flow introduced by the high-speed rotation of the rotating shaft in the submersible pump body in the prior art is transported in a straight line, resulting in greater impact pressure and higher wear rate on the impeller and the inside of the pump body, thus affecting the service life of the impeller and the pump body. The utility model facilitates and quickly draws in water flow, and the water flow entering the pump body flows into the diversion channel in a wavy curve trajectory, which not only helps to reduce the water flow impact pressure and wear, but also effectively avoids water backflow, and is more stable and reliable to use and durable.

[0032] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A large flow submersible pump, characterized in that: The pump comprises a motor (1), a pump body (2) and a flow guide channel (3); a thrust bearing seat (10) is arranged at the lower part of the motor (1), and a base (11) is arranged at the bottom end of the motor (1); a pump shaft (16) is installed at the upper end of the motor (1), and the pump shaft (16) is located at the center of the pump body (2); a water inlet section assembly (21) is arranged at the middle part of the pump body (2), and an upper flow guide shell assembly (26) is arranged at the upper part of the pump body (2); a flow guide channel (3) is installed in the upper flow guide shell assembly (26), and a check valve assembly (4) is installed at the upper end of the upper flow guide shell assembly (26).

2. A large flow submersible pump according to claim 1, characterized in that: A motor connecting frame (12) is sleeved on the outer side of the upper part of the motor (1), and a shaft lower connecting sleeve (13) is arranged above the motor connecting frame (12). The shaft lower connecting sleeve (13) is sleeved on the outer side of the lower part of the pump shaft (16), and the outer end of the shaft lower connecting sleeve (13) is fixed to the inner side wall of the pump body (2).

3. A large flow submersible pump according to claim 1, characterized in that: A coupling (14) is installed at the lower part of the pump shaft (16), and a shaft connecting sleeve (20) is arranged on the inner side of the lower part of the pump body (2), and the shaft connecting sleeve (20) is sleeved outside the pump shaft (16).

4. A large flow submersible pump according to claim 1, characterized in that: A plurality of impellers (17) are arranged on both sides of the middle of the pump shaft (16), and a plurality of inner sleeves (15) are sleeved on the upper part of the pump shaft (16), and the upper end of the pump shaft (16) is sleeved in a connecting sleeve (18) on the shaft rod.

5. A large flow submersible pump according to claim 1, characterized in that: A plurality of groups of water inlet holes (22) are arranged on the outer side surface of the water inlet joint assembly (21), an upper fixing plate (23) is fixed to the outer upper end of the water inlet joint assembly (21), a lower fixing plate (25) is fixed to the outer lower end of the water inlet joint assembly (21), and a plurality of groups of fences (24) are fixed between the upper fixing plate (23) and the lower fixing plate (25).

6. A large flow submersible pump according to claim 1, characterized in that: The flow guide channel (3) is sleeved outside the upper part of the pump shaft (16), and the lower end of the flow guide channel (3) leads to the water inlet section assembly (21), and the upper end of the flow guide channel (3) leads to the check valve assembly (4).

7. A large flow submersible pump according to claim 1, characterized in that: The upper end of the pump body (2) is provided with a first connecting flange (27), and the lower end of the check valve assembly (4) is provided with a second connecting flange (40), a plurality of sets of fastening bolts are installed between the second connecting flange (40) and the first connecting flange (27), and the upper end of the check valve assembly (4) is provided with a water outlet (41).

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