Dynamic sealing

2021-10-12View Original

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When a chemical pump is in operation, the head generated by the auxiliary impeller balances the high-pressure liquid at the outlet of the main impeller, thereby achieving sealing. When the pump is stopped, the secondary impeller is not active; therefore, a shutdown sealing device must be provided to prevent leaks from the chemical pump that may occur during shutdown. The secondary impeller seal features a simple structure, reliable sealing performance, and a long service life; it ensures no leakage during the operation of chemical pumps. Therefore, it is often used in chemical pumps that transport media containing impurities.

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Dynamic sealing

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