Analysis of the causes of idling of chemical magnetic pumps

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Analysis of the causes of idling of chemical magnetic pumps Chemical magnetic pumps are new products that use the working principle of permanent magnetic couplings. The magnetic pump bearings we see every day basically rely on the transported medium for cooling and lubrication, so idling is absolutely prohibited. How to avoid and solve the problem of high-altitude operation of chemical magnetic pumps. The first prerequisite is to find out the reasons for the dry operation of the magnetic pumps. These mainly include equipment leakage and blockage, starting the magnetic pump operation without filling with water, and debris stuck in the impeller, which reduces efficiency. The specific analysis is as follows.: Reasons for insufficient flow caused by equipment leakage and blockage: Insufficient flow of the magnetic pump is mostly caused by air leakage in the suction pipe, air leakage in the bottom valve, blockage of the water inlet, insufficient water entry attempts at the bottom valve, too low rotational speed of the magnetic pump, excessive wear of the sealing ring or impeller, excessive water absorption height, etc. Treatment method: Check the suction pipe and bottom valve to block the source of air leakage ； Clean the silt or blockage at the water inlet. The water entry depth of the bottom valve must be greater than 1.5 times the diameter of the water inlet pipe. Increase the water entry depth of the bottom valve, check the power supply voltage, increase the magnetic pump speed, replace the sealing ring or impeller, lower the installation position of the magnetic pump, or replace the high-lift water pump. In this case, insufficient flow causes the magnetic pump to run idling. The two filters are directly connected. The first is a bag filter, and the second is a cotton core filter. The pumps equipped with both filters are magnetic pumps with the same power of 2.2KW (3HP), and their flow requirements are the same. When the liquid is filtered from the magnetic pump of filter No. 1 to the filter No. 2, the flow rate will inevitably decrease, so that the liquid liquid flowing out is not enough for the magnetic pump in filter No. 2. After working for a period of time, the magnetic pump No. 2 will idling without water due to insufficient flow, and eventually the pump will be damaged. There are 2 solutions to this situation. The first type: The magnetic pump in the No. 2 filter does not start working and only plays a connecting role. The medicinal solution flows directly from the No. 1 filter to the No. 2 filter barrel for filtering. The second type: Just replace the two filters directly with a double-tower filter, a bag filter barrel plus a cotton core filter barrel, and a magnetic pump. Start the magnetic pump without filling it with water. Start the magnetic pump without filling it with water. Before starting the magnetic pump, be sure to check whether the magnetic pump is filled with water, otherwise the magnetic pump will idling without water and cause damage. Debris stuck in the impeller reduces efficiency. Debris stuck in the impeller will cause the magnetic pump to vibrate and make noise, reduce efficiency, reduce flow, and cause the magnetic pump to idling and cause damage to the pump. Debris should be removed in time to maintain the operating flow of the magnetic pump.