A vertical single-suction pump and its assembly method

Abstract

The invention relates to a vertical single suction pump and an assembling method thereof. The pump also comprises an air suction device, a switching device, a main gear disc and a hollow pipe, whereinthe main gear disc is horizontally arranged in a suspension body and is fixedly connected with a main pump shaft, the switching device comprises a groove-shaped pushing block, a connecting plate, a floating body and a floating plate, the groove-shaped pushing block is arranged on the right side of the suspension body in the way that an opening faces the main gear disc, and an auxiliary gear discforming gear transmission with the main gear disc is arranged in the groove-shaped pushing block. The air suction device comprises an air suction cylinder, a rotor, an auxiliary pump shaft and left and right rotating pieces, an air suction cavity is formed in the air suction cylinder, the rotor different from the air suction cavity in axis is arranged in the air suction cavity, the left and rightrotating pieces are movably arranged in the rotor, the middle of the air suction cylinder is provided with an air suction hole and an exhausting hole communicated with the air suction cavity, the airsuction hole is communicated with the inner cavity of a pump body through the hollow pipe, and the rotating rotor can exhaust a medium in the inner cavity of the pump body towards the exhausting hole.The vertical single suction pump has the advantages that pump priming is not needed, and the assembling method of the pump has the advantages of high pass percent.

Description

technical field [0001] The invention relates to a pump, in particular to a vertical single-suction pump and an assembly method thereof. Background technique [0002] Centrifugal pumps work by rotating the impeller to cause the water to move centrifugally. Before starting the pump, the inner cavity of the pump body and the suction pipe must be filled with water, and then the motor is started to drive the impeller and the water to rotate at a high speed. The water undergoes centrifugal motion, is thrown to the outer edge of the impeller, and flows into the water through the flow channel in the pump body. The disadvantage of the pressure water pipeline of the water pump is that because most of the water pumps are not filled with water before starting, if the motor is started to drive the impeller to rotate at this time, the inner cavity of the pump cannot be vacuumed, that is, the water in the suction pipe cannot be pumped. It is sucked into the inner cavity of the pump body, ...

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Problems solved by technology

Before starting the pump, the inner cavity of the pump body and the suction pipe must be filled with water, and then the motor is started to drive the impeller and the water to rotate at a high speed. The water undergoes centrifugal motion, is thrown to the outer edge of the impeller, and flows into the water through the flow channel in the pump body. The disadvantage of the pressure water pipeline of the water pump is that because most of the water pumps are not filled with water before starting, if the motor is started to drive the impeller to rotate at this time, the inner cavity of the pump cannot be vacuumed, that is, the water in the suction pipe cannot be pumped. It is sucked into the inner cavity of the pump body, and then discharged through the flow channel in the pump body. Therefore, it is necessary to manually fill the inner cavity of the pump body with water before starting the motor, commonly known as "priming pump". defect

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