Views: 0 Author: Site Editor Publish Time: 2020-05-29 Origin: Site
A self-priming pump is a pump that can suck up water without installing a bottom valve to fill the pump body with liquid. It is called a self-priming pump. The conveyed liquid can be divided into clean water self-priming pump, sewage self-priming pump, stainless steel self-priming pump, etc. The structure of self-priming pump is typical. This article introduces the structure of the self-priming pump.
What is self-priming pump?
What is the structure of the self-priming pump
Common types of self-priming pumps
The self-priming pump is a self-priming centrifugal pump, which has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. There is no need to install a bottom valve in the pipeline, just make sure that the pump body has a fixed amount of priming before working. Different liquids can use self-priming pumps of different materials.
There are many types of self-priming pumps, including molten salt pumps, vacuum pumps, submerged pumps, metering pumps, gear pumps, corrosion-resistant pumps, acid-resistant pumps, and fire pumps that flow in the direction of rotation. Then it merges with the water from the right return hole and flows along the volute. Because the liquid continuously hits the cascade in the volute and is broken by the impeller, it is vigorously stirred and mixed with the air to form a gas-water mixture, and the continuous flow prevents the gas and water from separating. The mixture is peeled off at the outlet of the volute and enters the separation chamber along the short tube. The air in the separation chamber is separated and discharged by the outlet pipe, and the water still flows to the outer edge of the impeller through the left and right return water holes, and is mixed with the air in the suction pipe. This repeated circulation gradually exhausts the air in the suction pipe, so that the water enters the pump and completes the self-priming process. The sewage pump is the same as the self-priming pump, the oil pump, the diaphragm pump, the screw pump, and the gear oil pump. The difference is that the return water does not flow to the outer edge of the impeller, but to the inlet of the impeller. When the internal mixing self-priming pump is started, the return valve at the front and bottom of the impeller must be opened to return the liquid in the pump to the inlet of the impeller. Under the action of high-speed rotation of the impeller, the water is mixed with the air from the suction pipe to form a gas-water mixture and discharged to the separation chamber. Here air is discharged and water returns from the return valve to the impeller inlet. This is repeated until the air is exhausted, and the internal mixing type self-priming pump sucks up water. The working principle is the same as the external mixing self-priming pump.
ZW self-priming pump is an energy-saving pump product developed after absorption, digestion and improvement according to relevant domestic and foreign technical data. The pump is a self-priming centrifugal pump, which has the advantages of compact structure, convenient operation, stable operation, convenient maintenance, high efficiency, long life, and strong self-priming ability. There is no need to install a bottom valve in the pipeline, and only need to keep a certain amount of priming liquid stored in the pump body before work, so the pipeline system is simplified to improve working conditions.
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