A bottom valve for submersible pump well

Abstract

The invention discloses a bottom valve used for an immersed pump well and belongs to the field of sealing devices. The bottom valve comprises an inner valve body, at least two elastic return mechanisms and an outer valve body used for being arranged at the bottom end of the pump well in a sealed mode. One end of the outer valve body communicates with the pump well. The inner valve body comprises a bracket used for supporting an immersed pump, and a division base, and the bracket and the division base are fixedly mounted. The division base comprises a top plate, a bottom plate and a division blade set. The top plate and the bottom plate are connected through the division blade set. The bottom plate is in radial sealed cooperation with the outer valve body. A supporting table is arranged on the outer edge of the bracket. The elastic return mechanisms are arranged between the supporting table and the outer valve body. The stretching and retracting direction of the elastic return mechanism is the same as the sliding direction of the inner valve body. Under the condition that acting force facing the division base is not applied to the bracket, the bottom plate is in sealed fit with the outer valve body under the effect of the elastic return mechanisms. By adoption of the bottom valve, the pumping efficiency of the immersed pump is improved.

Description

technical field [0001] The invention belongs to the field of sealing devices, in particular to a bottom valve used in a pump well of a submersible pump. Background technique [0002] The submersible pump is a kind of equipment for pumping liquid. According to whether the submersible pump can be moved, it can be divided into fixed submersible pump and mobile submersible pump. [0003] The mobile submersible pump usually needs to cooperate with the pump well for pumping operations. The submersible pump is installed in the pump well. There is a bottom valve at the bottom of the pump well. The pump well is connected with the liquid storage tank through the bottom valve. Body and the spool set in the valve body, through manual control of the spool, in order to realize the conduction and shut-off of the bottom valve. For example, when liquid cargo needs to be pumped, the submersible pump is first moved into the pump well, and then the bottom valve is controlled to connect the pum...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low pumping efficiency of the mobile submersible pump, the embodiment of the present invention provides a bottom valve for the pump well of the submersible pump

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