Novel gas etching prevention axial flow pump

Abstract

The invention provides a novel gas etching prevention axial flow pump. A water outlet bent pipe, a pump body, a guide blade, an impeller, a sucking-in chamber, a supplementation air bag, a pressure instrument, an inflation opening, a deflation opening and an electric inflation device are installed; an electric air bag is arranged on the sucking-in chamber of the water inlet end. In the operation process, thrust generated by high speed rotation of the impeller driven by the guide blade is used for lifting water; when a pressure instrument detects the reduction of the pressure received by the sucking-in chamber, the instrument degree is transmitted to the electric inflation device; the supplementation air bag immediately plumps up through the inflation opening; the axial flow pump is enabledto be in a full water state; the suck-in of the axial flow pump on the air is reduced. When the pressure instrument monitors the increase of the pressure received by the suck-in chamber, the instrument degree is transmitted to the electric inflation device; the supplementation air bag exhausts through the exhaust opening and immediately shrinks; the axial flow pump is enabled to reach the maximumlift path for lifting the water. Water in the pump body is discharged through the water outlet bent pipe.

Description

technical field [0001] The invention relates to an axial flow pump, in particular to a novel anti-cavitation axial flow pump, which belongs to the field of water pumps. Background technique [0002] With the rapid development of my country's water conservancy construction, axial flow pumps play a vital role in water conservancy transportation. The working principle of axial flow pumps is to use the thrust generated by the high-speed rotation of the impeller to lift water. When the blades of the axial flow pump rotate, the lift generated by the water can push the water from below to above. Air is sometimes sucked in during the working process of the axial flow pump, which causes cavitation to the blades of the axial flow pump. Damage to the blades of the axial flow pump will cause binding to the motor in severe cases. Therefore, the present invention provides a novel anti-cavitation axial flow pump. It can solve the cavitation phenomenon of the axial flow pump to the blade...

AI Technical Summary

Problems solved by technology

In the original axial flow pump, an electric airbag is installed at the water inlet. In the case of insufficient flow, the electric airbag will bulge to supplement the flow, so as to ensure that the impeller of the axial flow pump is always in a state of full water, and reduce the impact of the axial flow pump on the air. The suction can effectively reduce the cavitation problem caused by the low hydraulic pressure in the pump body, thus solving the problem of cavitation of the blade and the gas binding phenomenon of the motor in the existing axial flow pump.

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