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Deep-well pump capable of reducing starting water resistance

A deep well pump and water resistance technology, which is applied to drive pumps, components of pumping devices for elastic fluids, pumps, etc., can solve the problems of output shafts and impellers with short service life, and reduce the risk of water ingress. , The effect of small starting water resistance and reducing the amount of use

Pending Publication Date: 2022-05-03
ZHEJIANG DAFU PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the service life of the output shaft and the impeller of the existing deep well pump is not long

Method used

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  • Deep-well pump capable of reducing starting water resistance
  • Deep-well pump capable of reducing starting water resistance
  • Deep-well pump capable of reducing starting water resistance

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0038] Specific embodiment one: please refer to Figure 1-6 A deep well pump with reduced starting water resistance, comprising a motor part 1, an impeller 2 and a pumping part 3 arranged coaxially.

[0039] The motor part 1 includes a motor 10, a motor housing 11, a water filling assembly 12 and a shaft sleeve 14;

[0040] The motor 10 is fixedly arranged in the motor casing 11, and the motor casing 11 is provided with a cooling fluid to cool down the power supply 10; the output shaft 13 of the motor 10 runs through the upper wall of the motor casing 11 and is located on the upper side of the motor casing 11;

[0041] The shaft sleeve 14 is sleeved on the outer periphery of the output shaft 13 located on the upper side of the motor housing 11, the shaft sleeve 14 is fixedly connected with the output shaft 13, the shaft sleeve 14 is provided with a flow channel 15, and the outer circumference of the shaft sleeve 14 is provided with at least one stop protrusion Touch 16;

[0...

specific Embodiment 2

[0048] Specific embodiment two: on the basis of specific embodiment one, please refer to Figure 7 A deep well pump with reduced starting water resistance. There are multiple impellers 2, which are sequentially arranged along the output shaft 13 from bottom to top. There are multiple sets of limit synapses 16, which are consistent with the number of impellers 2. The location corresponds to the location of the limiting synapse 16 .

[0049] A plurality of pressure valves 17 are arranged in the flow channel 15, and the number of the pressure valves 17 is consistent with the number of the limit synapses 16. The liquid needs to pass through the pressure valve 17 before entering the corresponding limit synapse 16 .

[0050] The pressure valve 17 is a normally closed part, and the opening threshold of each pressure valve 17 is different. The lower the opening threshold of the pressure valve 17 on the lower side of the flow channel 15, the lower the opening threshold, that is, the w...

specific Embodiment 3

[0052] Embodiment 3: Different from Embodiment 1, the water-filled tank can also communicate with the outside of the motor casing. When the deep well pump is put into the well, the water-filled tank is communicated with the well water, and the well water enters the flow channel to drive the contact to move , wherein, the connection port between the water filling tank and the well water is provided with a filter screen to prevent solid particle impurities from entering the flow channel and causing blockage.

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Abstract

The invention discloses a deep-well pump capable of reducing starting water resistance, and belongs to the field of pumps. A deep well pump capable of reducing starting water resistance comprises a motor part, an impeller and a water pumping part which are coaxially arranged, and the impeller has the capacity of independently rotating relative to an output shaft of the motor part; the deep-well pump further comprises a limiting module. The limiting module selectively connects the impeller with the output shaft in a follow-up manner; the impeller can rotate in advance when the deep-well pump is put into a water well, and the starting water resistance of the motor is reduced.

Description

technical field [0001] The invention belongs to the field of pumps, and more specifically relates to a deep well pump with reduced starting water resistance. Background technique [0002] Deep well pump is a pump that is immersed in groundwater wells to pump and transport water. It is widely used in farmland drainage and irrigation, industrial and mining enterprises, urban water supply and drainage, and sewage treatment. [0003] Since the deep well pump is placed at the bottom of the well for pumping operations, the water pressure at the bottom of the well is relatively high. When the deep well pump drives the impeller to rotate, it needs to overcome a large water resistance. Therefore, the service life of the output shaft and the impeller of the existing deep well pump is not long. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a deep well pump with reduced starting water resistance, which can realize the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D9/00F04D13/10F04D15/00F04D29/04F04D29/20F04D29/58F04D29/62
CPCF04D9/00F04D13/086F04D13/10F04D15/0005F04D29/20F04D29/628F04D29/04F04D29/5806F04D29/5886
Inventor 林发明
Owner ZHEJIANG DAFU PUMP IND
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