Sand-preventing sealing device of submersible electric pump

A technology for sealing devices and submersible electric pumps, which is applied to pump devices, parts of pumping devices for elastic fluids, pumps, etc., and can solve problems such as seal failure of submersible electric pumps

Inactive Publication Date: 2013-12-18
TAIZHOU TAIFENG PUMP IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the problem of the existing submersible pump seal failure caused by the rapid wear of sediment

Method used

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  • Sand-preventing sealing device of submersible electric pump
  • Sand-preventing sealing device of submersible electric pump
  • Sand-preventing sealing device of submersible electric pump

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] according to figure 1 , figure 2 , image 3 As shown, a sand control sealing device for a submersible electric pump, the device is located between the motor and the water pump, the device is provided with a double helix sand throwing ring 3, and the double helix sand throwing ring 3 is sleeved on the rotor shaft 7 of the motor , A sand discharge ring 5 is fixed on the motor bearing seat, and there is a gap between the inner hole of the sand discharge ring 5 and the outer circle of the spiral sand throwing ring 3 .

[0013] The motor rotor shaft 7 of the present invention and the double-helix sand throwing ring 3 are covered with a metal gasket 2, and the double-helix sand throwing ring 3 is fixed by the metal gasket 2 at one end and the connecting flange 1 at the other end, and then fixed by the metal gasket The internal mechanical seal or skeleton oil seal 4 is fixed and sealed. The outer periphery of one end of the double-helix sand rejection ring 3 is provided wi...

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PUM

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Abstract

The invention relates to a sand-preventing sealing device of a submersible electric pump. The sand-preventing sealing device is arranged between a motor and a water pump and provided with a double-spiral sand slinger (3) which is sleeved on a motor rotor spindle (7), a sand-draining ring (5) is fixed on a bearing seat of the motor, a gap is formed between an inner hole of the desilting ring (5) and the outer circle of the spiral sanding throwing ring (3), a metallic gasket (2) is sleeved between the motor rotor spindle (7) and the spiral sanding throwing ring (3), and the spiral sanding throwing ring (3) is fixed via the metallic gasket (2) at one end and a connecting flange (1) at the other end and is fixedly sealed by a mechanical seal or framework oil seal (4) inside the metallic gasket (2). A wear-resisting pad (6) is fixed on the bearing seat of the motor and is arranged between a sand-throwing blade on the spiral sanding throwing ring (3) and the bearing seat of the motor.

Description

technical field [0001] The invention relates to a sealing device, in particular to a motor sand-proof sealing device for a submersible electric pump. Background technique [0002] In the past, when the submersible electric pump was used in the occasion with a large amount of mud and sand in the medium, because the mud and sand easily entered between the rotor shaft and the dynamic seal, the rotor shaft and the seal were damaged early due to the rapid wear of the mud and sand, resulting in short-term failure of the submersible motor due to the seal. And water, thus burning the motor. The service life of the machine is shortened, the work progress is affected, and the cost is also increased. Contents of the invention [0003] In order to overcome the above defects, the object of the present invention is to provide a sand control sealing device for submersible electric pumps with good sealing performance, long service life and high production efficiency. In order to sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/10F04D13/08
Inventor 吴进毛骥赵秀华
Owner TAIZHOU TAIFENG PUMP IND
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