Vane Parallel Submersible Pump

Abstract

A vane type parallel submersible pump is composed of a pump body, a rotor, vanes and a pump shaft. A plurality of vane pump modularization units with equal or unequal widths are installed in an inner cavity of the pump body along the axis. Each modularization unit is composed of a pump chamber assembly and a rotor assembly. By means of the new modularization structure, the situation that the vanes generate heat due to the fact that high-speed friction occurs to end surfaces and side surfaces of the vanes during operating, conveyed media are vaporized, and vibration and noise are generated due to the liquid catching phenomenon can be avoided. A channel communicating with low pressure areas and water inlets of all the vane pump modularization units and a channel communicating with high pressure areas and water outlets of all the vane pump modularization units are arranged in the inner cavity of the pump body of the vane type parallel submersible pump. On the premise that the diameter of the outline is not increased, the pumping flow is increased through the method of significantly widening the vanes, meanwhile, the vanes cannot be deformed or warped, the universalization degree of the pump can be obviously improved, and the production cost is significantly reduced. The flexible actions of the vanes of the pump can prevent fiber winding, and the vane type parallel submersible pump can be used as a submersible sewage pump.

Description

technical field [0001] The invention relates to a displacement pump, in particular to a vane type parallel submersible pump. Background technique [0002] At present, most of the known submersible pumps are centrifugal. The disadvantage of centrifugal submersible pumps is that a pump has only one flow rate, because the flow rate is related to the outlet width of the impeller. If you want to change the pump flow rate, you must change the size of the impeller. Change the outline size of the pump, so that there are many pumps of different sizes to meet the needs of different flow rates. It is expected that on the basis of a basic pump, the diameter of the pump body remains unchanged to greatly increase the pump capacity. To meet the different requirements for flow, centrifugal pumps cannot meet this requirement, but positive displacement vane pumps may meet the above requirements, because on the premise of keeping the diameter of the pump body unchanged, changing the width of t...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the known submersible pumps are centrifugal. The disadvantage of centrifugal submersible pumps is that a pump has only one flow rate, because the flow rate is related to the outlet width of the impeller. If you want to change the pump flow rate, you must change the size of the impeller. Change the outline size of the pump, so that there are many pumps of different sizes to meet the needs of different flow rates. It is expected that on the basis of a basic pump, the diameter of the pump body remains unchanged to greatly increase the pump capacity. To meet the different requirements for flow, centrifugal pumps cannot meet this requirement, but positive displacement vane pumps may meet the above requirements, because on the premise of keeping the diameter of the pump body unchanged, changing the width of the vane can change the pump. The flow rate, and the change of blade width only affects the axial size of the pump, the problem is how to overcome the excessively wide blade without deformation or warping, otherwise, the pump will not work properly

In addition, to make the vane pump suitable for water, the following two defects of the traditional vane pump must be overcome. One is the outer end surface of the vane and the inner surface of the pump body and the two sides of the vane and the left and right stationary side plates Both produce high-speed friction, cause heat generation, and even vaporize the conveyed medium; the second is the closed space surrounded by the outer circle of the rotor, the inner cavity of the pump body and the two blades, and its volume changes continuously during operation. When it gets smaller, it is prone to trapped liquid. Due to the incompressibility of the liquid, the excess liquid is forced to squeeze out from the gap, resulting in noise and vibration

The current vane pump is only suitable for oil with better lubricity

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