Welcome to the official website of Shenzhen Chenzhou Electric Co., Ltd.!
Contact: Mr. Xiong Minghan (General Manager)
Add: 3rd and 4th floors, Building 15A, Changxing Science and Technology Industrial Park, Changzhen Community, Yutang Street, Guangming District, Shenzhen
phone：18926546421
Tel：86 0755 27803432
Fax：86 0755 22141522
E-mail：xmhyb2003@aliyun.com
Web：www.cz-ea.com
The reason why the self-priming device is needed is matched according to the working principle of the solar water pump. If the configuration of the solar water pump can pass, then in normal use, the self-priming device is not required. So under what circumstances does a solar pump need a self-priming device?
When the impeller rotates, only "textured" things can be thrown around from the center, so that a clear vacuum is formed in the center. Obviously, if the pump cavity of the solar water pump is filled with air, no matter how fast it rotates, no vacuum can be formed. Therefore, before the solar water pump works, the pump cavity must be filled with liquid in advance, which is the origin of the self-priming device.
What are the types of self-priming devices?
One is to use compressed air to vacuum the pump casing to divert water; before starting the solar water pump, during the operation of the self-priming device, the valve on the outlet side should be kept closed, or a spring-acting back pressure valve should be installed. When the outlet pressure reaches the normal working pressure of 60 % Automatically opens, the vacuum suction must be connected to the high point on the side of the pump suction port, and placed in the suction pipe to form an air cavity. Usually a decompressed compressed air is used and the Venturi tube effect is used to create a vacuum in the pump casing and fill it with water. This device allows the centrifugal pump to run dry for a short time.
Another type of self-priming device is its own vacuum pump. Some pumps are equipped with self-priming devices, such as fire emergency water pumps. The disadvantage of this is that the pump structure becomes complex and the volume increases, and the water tank above must be ensured every time it is started. Full of water.
Shenzhen Chenzhou Electric Co., Ltd.
6th Floor, Building 55, Tianliaolang Qingli Industrial Park, Guangming New District, Shenzhen
Contact: Mr. Xiong Minghan (Benny) (General Manager)
Phone: 86 0755-27803432
Phone: 18926546421
Email: xmhyb2003@aliyun.com
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