Submersible liquid delivery pump with inside-cavity pressure of motor automatically adjustable

An automatic adjustment and infusion pump technology, which is applied in the field of infusion pumps, can solve the problems of shortened service life, damage to the motor casing, seepage or leakage, etc., so as to improve the service life, overcome the leakage phenomenon, and prevent sudden bursting Effect

Inactive Publication Date: 2013-09-11
周林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After a long time, it is easy to cause damage to the motor casing, which will eventually lead to seepage or leakage, which will damage the coil of the motor and shorten the service life of the pump

Method used

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  • Submersible liquid delivery pump with inside-cavity pressure of motor automatically adjustable

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Experimental program
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Embodiment Construction

[0009] Such as figure 1 As shown: the motor housing is composed of an intermediate housing 3, an upper end cover 8, and a lower end cover 11, and the rotor shaft 5 is supported at the center of the upper end cover 8 and the lower end cover 11 through an upper bearing 9 and a lower bearing 10. The upper end of the rotor shaft 5 extends to the outside of the motor housing and an upper end seal 7 is provided. The outer end of the rotor shaft 5 is equipped with an impeller wheel train, which is located in the impeller housing 6, and the impeller housing 6 is connected to the motor housing. body connected. The rotor 4 is arranged on the rotor shaft 5 , and the stator 2 matched with the rotor 4 is arranged inside the middle casing 3 . A communication hole 12 is processed on the lower end cover 11 , and an expansion-contraction bladder 13 is fixed outside the lower end cover 11 . The material of the expansion-contraction capsule 13 can be rubber or metal material or other materials...

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PUM

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Abstract

The invention discloses a submersible liquid delivery pump with inside-cavity pressure of a motor automatically adjustable. The submersible liquid delivery pump comprises a motor, a motor shell is provided with through holes, dilation sacs are arranged at the through holes outside the motor shell, and cavities inside the dilation sacs are communicated with the inner cavity of the motor shell through the through holes. During operating, when temperature and pressure inside the motor shell are increased, pressure can be released automatically through the through holes, so that the cavities inside the dilation sacs are enlarged; on the contrary, the cavities inside the dilation sacs are shrunk. Accordingly, automatic adjustment is realized, inside and outside balance of the motor shell is kept, so that the motor shell is protected from damage by pressure, leakage caused by pressure damage is avoided, and service life is prolonged.

Description

technical field [0001] The invention relates to an infusion pump, in particular to a submerged infusion pump which can automatically adjust the inner chamber pressure of a motor. Background technique [0002] When the submersible infusion pump is working, it is located in the conveying liquid, such as a submersible pump, through the operation of the pump, water can be sucked into the pump body, and then discharged through the water pipe to achieve the purpose of pumping water. Existing submersible infusion pumps include a motor part and an impeller train part. When the motor is running, the rotor shaft of the motor rotates, and the impeller train drives the blades of the pump to run to inhale and discharge liquid. The motor of the submersible pump includes a shell, which is composed of a middle shell and an upper end cover and a lower end cover located at both ends of the middle shell. There is a rotor on the top, and the stator matched with the rotor is set in the middle c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/22F04D13/08
Inventor 周林
Owner 周林
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