Epicycloid centrifugal pump impeller

Abstract

The invention discloses an epicycloid centrifugal pump impeller. The epicycloid centrifugal pump impeller comprises a wheel disc and blades which are fixedly arranged on one end face of the wheel disc. The tail sections of the blades are gradually changed to be of an epicycloid structure which extends in the radial direction of the wheel disc. According to the epicycloid centrifugal pump impeller, molded lines on the tail sections of the blades are epicycloids close to the fluid motion law, the impeller is designed to be in a half-open type, compared with a common centrifugal pump, loss at an outlet of the impeller can be reduced, the partial reflux phenomenon is reduced, and water pumping efficiency is improved.

Description

technical field [0001] The invention relates to a centrifugal pump impeller, in particular to an epicycloid centrifugal pump impeller. Background technique [0002] Centrifugal pumps work by using the centrifugal force generated by the water generated by the rotation of the impeller. They are used in water supply systems and fire protection in municipal pipe networks, subway projects, water plants, non-negative pressure equipment, chemical plants, power plants, coal mines, sewage treatment stations and other industries. It is widely used in system and HVAC system; before starting the centrifugal pump, the pump casing and the suction pipe must be filled with water, and then the motor is started, so that the pump shaft drives the impeller and the water to rotate at a high speed, and the water is thrown to the impeller under the action of centrifugal force The outer edge flows into the pressure water pipeline of the water pump through the flow channel of the volute pump casing....

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Problems solved by technology

[0002] Centrifugal pumps work by using the centrifugal force generated by the water generated by the rotation of the impeller. They are used in water supply systems and fire protection in municipal pipe networks, subway projects, water plants, non-negative pressure equipment, chemical plants, power plants, coal mines, sewage treatment stations and other industries. It is widely used in system and HVAC system; before starting the centrifugal pump, the pump casing and the suction pipe must be filled with water, and then the motor is started, so that the pump shaft drives the impeller and the water to rotate at a high speed, and the water is thrown to the impeller under the action of centrifugal force The outer edge flows into the pressure water pipeline of the water pump through the flow channel of the volute pump casing. At the center of the water pump impeller, due to the water being thrown out under the action of centrifugal force, a vacuum is formed, and the water in the suction pool is vacuumed under the action of atmospheric pressure. Pressed into the pump casing, the impeller rotates continuously, so that the water flows in and out continuously under the action of the impeller, and the purpose of water delivery is achieved; the impeller is the core part of the centrifugal pump, which can make the water obtain kinetic energy and generate flow; In the prior art, the impeller blades of the centrifugal pump are plane spiral, the loss at the outlet is large, there is a partial backflow phenomenon, and there is a problem of low pumping efficiency

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