Deep-well pump and motor thereof

Abstract

The invention discloses a deep-well pump and a motor thereof. The motor comprises a motor main body and at least two valve bodies mounted on the motor main body, wherein each valve body has a cavity, one end of each cavity is communicated with an inner cooling circulation flow path in the motor, and the other end of each cavity is communicated with an outer cooling circulation flow path outside the motor; and a sealing structure is movably arranged in each cavity. In the using process of the motor, the pressure inside and outside the motor can be adjusted through movement of the sealing structures in the valve bodies, an oil bag structure does not need to be additionally arranged; and in the using process, the pressure inside and outside the motor is directly adjusted through flowing of media in the outer cooling circulation flow path and the inner cooling circulation flow path, the adjusting process is convenient, and when the motor is installed on the deep-well pump, the structure of the deep-well pump can be simplified.

Description

technical field [0001] The present invention relates to the technical field of pumping equipment, and more specifically, relates to a motor. In addition, the present invention also relates to a deep well pump comprising the above motor. Background technique [0002] The working environment of deep well pumps is mostly in deep underwater places, and the water pressure in the environment at this depth is relatively high. Deep well pumps are vulnerable to this pressure, so a device is needed to balance the internal pressure. [0003] In the prior art, in order to adjust the internal and external pressure of the deep well pump when it works underwater, an oil bladder structure is generally set up, and the pressure during the working process of the deep well pump is adjusted through the volume change of the oil bladder structure. However, this adjustment method requires An additional oil bag structure is provided to complicate the structure of the deep well pump. [0004] To s...

AI Technical Summary

Problems solved by technology

Deep well pumps are easily damaged when entering this pressure, so a device is needed to balance the internal pressure

[0003] In the prior art, in order to adjust the internal and external pressure of the deep well pump when it works underwater, an oil bladder structure is generally set up, and the pressure during the working process of the deep well pump is adjusted through the volume change of the oil bladder structure. However, this adjustment method requires An additional oil bag structure is provided to complicate the structure of the deep well pump

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