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Sand-prevention 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

Active Publication Date: 2014-08-13
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-prevention sealing device of submersible electric pump
  • Sand-prevention sealing device of submersible electric pump
  • Sand-prevention 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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Abstract

The invention relates to a sand-prevention sealing device of a submersible electric pump. The sand-prevention sealing device is arranged between a motor and a water pump and is provided with a dual-spiral sand throwing ring (3); the dual-spiral sand throwing ring (3) is sleeved on a motor rotor shaft (7); a sand discharging ring (5) is fixed on a motor bearing pedestal; a clearance is arranged between an inner hole of the sand discharging ring (5) and an outer circle of the dual-spiral sand throwing ring (3); a metal pad (2) is sleeved between the motor rotator shaft (7) and the dual-spiral sand throwing ring (3); the dual-spiral sand throwing ring (3) is fixed by the metal pad (2) arranged at one end of the dual-spiral sand throwing ring (3) and a connecting flange (1) arranged at the other end of the dual-spiral sand throwing ring (3), and then is fixedly sealed by a mechanical seal or a frame oil seal (4) arranged in the metal pad; a wear resistant pad (6) is fixed on the motor bearing pedestal; and the wear resistant pad (6) is arranged between the motor bearing pedestal and a sand throwing blade on the dual-spiral sand throwing ring (3).

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 Patents(China)
IPC IPC(8): F04D29/10F04D13/08
Inventor 吴进毛骥赵秀华
Owner TAIZHOU TAIFENG PUMP IND
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