Oil-immersed energy-saving multistage submersible pump

Abstract

The utility model discloses an oil-immersed energy-saving multistage submersible pump which comprises a submersible motor, a multistage impeller and a water inlet filter cylinder, the water inlet filter cylinder is arranged above the submersible motor, the multistage impeller is arranged above the water inlet filter cylinder, a first cover plate is arranged at the top of the submersible motor, and a second cover plate is arranged at the bottom of the submersible motor. A first flange connected with the first cover plate is arranged at the bottom of the water inlet filter cartridge, and heat dissipation stop levers vertically extending to the outer side of the water inlet filter cartridge are arranged on the first cover plate at intervals. According to the oil-immersed type energy-saving multi-stage submersible pump, the heat dissipation stop levers are distributed on the outer side of the water inlet filter cylinder, the oil-immersed type energy-saving multi-stage submersible pump can make contact with flowing water flow to conduct heat exchange, the heat dissipation effect is improved, impurities can be blocked, large impurities are prevented from entering gaps between the heat dissipation stop levers and the water inlet filter cylinder, and therefore the probability that filter holes are blocked is reduced, and the service life of the submersible pump is prolonged. The water inlet efficiency is improved, and the energy consumption and cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of water pumps, and in particular to an oil-immersed energy-saving multi-stage submersible pump. Background Technology

[0002] The motor of an oil-immersed submersible pump is filled with lubricating oil for cooling and lubrication. To ensure normal motor operation, the temperature of the lubricating oil typically does not exceed 45°C. The cooling of the lubricating oil usually relies solely on heat exchange between the motor casing and the external water flow, which is relatively simple.

[0003] During the operation of a submersible pump, the nearby water flow often contains impurities such as particles, aquatic plants, and branches. These impurities are easily drawn into the submersible pump by the water flow, affecting its normal operation. Therefore, submersible pumps need to be equipped with a filter structure to filter the water flow and prevent impurities from entering the pump.

[0004] In the prior art, utility model patent application number 202420220290X discloses a mesh cover anti-clogging type oil-immersed submersible electric pump. By adding a composite plate and a connecting frame strip to the outer ring of the inner mesh cover layer, and opening outer layer leakage holes and straight leakage holes on the surface of the composite plate and the connecting frame strip, the submersible electric pump is provided with a better anti-clogging effect. However, this dual filtration structure affects the water intake efficiency and energy consumption. After the inner mesh cover layer, outer layer leakage holes or straight leakage holes are blocked by impurities, it is easier to run dry, which reduces the water intake efficiency and further increases energy consumption, requiring improvement. Utility Model Content

[0005] The purpose of this invention is to provide an oil-immersed energy-saving multi-stage submersible pump that reduces clogging problems and improves energy efficiency and heat dissipation performance.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An oil-immersed energy-saving multistage submersible pump includes: a submersible motor, a multistage impeller, and an inlet filter cartridge. The inlet filter cartridge is disposed above the submersible motor, and the multistage impeller is disposed above the inlet filter cartridge. A first cover plate is disposed on the top of the submersible motor, and a first flange connected to the first cover plate is disposed at the bottom of the inlet filter cartridge. Heat dissipation baffles extending vertically to the outside of the inlet filter cartridge are disposed at intervals on the first cover plate.

[0008] The water inlet filter cartridge is provided with filter holes at intervals.

[0009] The bottom of the heat dissipation baffle extends below the first cover plate and points towards the stator winding of the submersible motor.

[0010] The submersible motor is filled with insulating lubricating oil.

[0011] The heat dissipation baffles are arranged in a ring array on the first cover plate.

[0012] The top of the water inlet filter cartridge is provided with a second flange that connects to the bottom of a multi-stage impeller.

[0013] The multi-stage impeller is provided with a second cover plate at the top, and the second cover plate is provided with a water outlet port that communicates with the multi-stage impeller.

[0014] The second cover plate is provided with lifting lugs located on both sides of the water outlet.

[0015] The beneficial effects of this utility model are as follows: An oil-immersed energy-saving multi-stage submersible pump, with heat dissipation baffles distributed on the outside of the inlet filter cartridge, can not only contact the flowing water for heat exchange and improve the heat dissipation effect, but also block impurities, preventing larger impurities from entering the gap between the heat dissipation baffles and the inlet filter cartridge, thereby reducing the probability of filter holes being blocked, improving water intake efficiency, helping to reduce energy consumption and costs, and improving energy-saving effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0017] The following is combined Figure 1 The technical solution of this utility model will be further illustrated through specific embodiments.

[0018] An oil-immersed energy-saving multistage submersible pump includes: a submersible motor 1, a multistage impeller 6, and an inlet filter cartridge 5. The inlet filter cartridge 5 is positioned above the submersible motor 1, and the multistage impeller 6 is positioned above the inlet filter cartridge 5. The shaft of the submersible motor 1 passes through the inlet filter cartridge 5 to drive the rotation of the impellers in the multistage impeller 6. A mechanical seal corresponding to the shaft is installed in the submersible motor 1 to prevent water from entering the interior of the submersible motor 1.

[0019] The submersible motor 1 is filled with insulating lubricating oil. The insulating lubricating oil is used to dissipate heat from the stator windings and to lubricate the rotation of the shaft, thereby reducing friction and avoiding the problem of high temperature during long-term operation of the submersible motor 1.

[0020] like Figure 1 As shown, a first cover plate 3 is provided on the top of the submersible motor 1, and a first flange 4 connected to the first cover plate 3 is provided at the bottom of the water inlet filter cartridge 5. The first cover plate 3 and the first flange 4 can be fixed with screws, and the structure is solid.

[0021] The inlet filter cartridge 5 is provided with filter holes 9 at intervals, and external water flows through the filter holes 9 and is drawn into the inlet filter cartridge 5. The top of the inlet filter cartridge 5 is provided with a second flange 12 connected to the bottom of a multi-stage impeller 6. The bottom of the multi-stage impeller 6 and the second flange 12 can be fixed with screws, which is convenient for disassembly and assembly.

[0022] In this embodiment, a second cover plate 7 is provided on the top of the multi-stage impeller 6. The second cover plate 7 is provided with a water outlet port 11 communicating with the multi-stage impeller 6. The multi-stage impeller 6 sends water into the water outlet port 11, and a water pipe is connected to the water outlet port 11 to deliver the water to the target location. The second cover plate 7 is provided with lifting lugs 8 located on both sides of the water outlet port 11 for easy connection with a pull rope for the deployment and positioning of the submersible pump.

[0023] like Figure 1 As shown, the first cover plate 3 is provided with heat dissipation baffles 2 that extend vertically to the outside of the water inlet filter cylinder at intervals, and the edge of the first flange 4 is provided with U-shaped grooves 10 that correspond one-to-one with the heat dissipation baffles 2, which does not affect the arrangement of the heat dissipation baffles 2.

[0024] In this embodiment, the heat dissipation baffles 2 are arranged in a ring array on the first cover plate 3 and are evenly distributed. By spreading the heat dissipation baffles 2 on the outside of the water inlet filter cartridge 5, they can not only come into contact with the flowing water for heat exchange and improve the heat dissipation effect, but also block impurities, preventing larger impurities from entering the gap between the heat dissipation baffles 2 and the water inlet filter cartridge 5, thereby reducing the probability of filter holes being blocked, improving water intake efficiency, helping to reduce energy consumption and cost, and improving energy saving effect.

[0025] like Figure 1 As shown, the bottom of the heat dissipation baffle 2 extends downwards from the first cover plate 3 and points towards the stator winding of the submersible motor 1. The bottom of the heat dissipation baffle 2 can directly contact the insulating lubricating oil above the stator winding, transferring the heat from the insulating lubricating oil and the stator winding to the water flow around the top of the heat dissipation baffle 2, further improving the heat dissipation effect. The first cover plate 3 is provided with a corresponding insertion hole for the heat dissipation baffle 2, facilitating its installation and securing it by welding, ensuring good sealing.

[0026] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An oil-immersed energy-saving multi-stage submersible pump, characterized in that, include: The submersible motor, multi-stage impeller, and inlet filter cartridge are provided. The inlet filter cartridge is located above the submersible motor, and the multi-stage impeller is located above the inlet filter cartridge. A first cover plate is provided on the top of the submersible motor, and a first flange connected to the first cover plate is provided at the bottom of the inlet filter cartridge. Heat dissipation baffles extending vertically to the outside of the inlet filter cartridge are provided at intervals on the first cover plate.

2. The oil-immersed energy-saving multi-stage submersible pump according to claim 1, characterized in that, The inlet filter cartridge is provided with filter holes at intervals.

3. The oil-immersed energy-saving multi-stage submersible pump according to claim 1, characterized in that, The bottom of the heat dissipation baffle extends below the first cover plate and points towards the stator winding of the submersible motor.

4. The oil-immersed energy-saving multi-stage submersible pump according to claim 1, characterized in that, The submersible motor is filled with insulating lubricating oil.

5. The oil-immersed energy-saving multi-stage submersible pump according to claim 1, characterized in that, The heat dissipation baffles are arranged in a ring array on the first cover plate.

6. The oil-immersed energy-saving multi-stage submersible pump according to claim 1, characterized in that, The top of the water inlet filter cartridge is provided with a second flange that connects to the bottom of a multi-stage impeller.

7. The oil-immersed energy-saving multi-stage submersible pump according to claim 1, characterized in that, The top of the multi-stage impeller is provided with a second cover plate, and the second cover plate is provided with a water outlet port communicating with the multi-stage impeller.

8. The oil-immersed energy-saving multi-stage submersible pump according to claim 7, characterized in that, The second cover plate is provided with lifting lugs located on both sides of the water outlet port.

9. The oil-immersed energy-saving multi-stage submersible pump according to claim 1, characterized in that, The first flange is provided with U-shaped grooves that correspond one-to-one with the heat dissipation baffle.

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