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Four methods to improve the performance of self-priming sewage pumps
- Aug 23, 2018 -

1. Install the suction bottom valve at the end of the suction pipe of the self-priming sewage pump.

The suction bottom valve is actually a check valve, which ensures that the water flow can only enter the suction pipe from the pool and cannot flow back. Therefore, if the suction pipe is filled with water, although the water pump axis elevation is higher than the working water level of the pool, due to the water absorption bottom The function of the valve, the water in the suction pipe will not flow into the pool, so that the water pipe can be filled with water all the time, ensuring that the pump can start automatically and quickly. The reliability of this water absorption method is affected by the quality of the suction bottom valve. For example, if the closure is not tight and the water leaks, the water in the suction pipe will slowly flow into the pool. After a long time, there is no water in the suction pipe, which causes the water pump to start. Artificial irrigation is required.


2. The self-priming sewage pump reduces the curve of the inlet pipe, the height of the drop and the horizontal distance.


3. The self-priming sewage pump is provided with a water absorption tank before the pump.

In this way, a water absorption tank needs to be arranged on the water suction pipe of the water pump. Before the first operation of the water pump, the water in the tank should be manually filled with water. After the first operation stops, the height of the water inlet pipe of the water absorption tank is higher than the water level in the water pipe, although The height of the water surface in the pool is lower than the height of the water surface in the tank. The water in the tank will not flow backwards and enter the pool. Therefore, the water tank can store a certain amount of water, and the water outlet of the water tank (ie the suction pipe of the water pump) is high. It is lower than the water level in the pipe, so it can ensure that the water pipe of the water pump is filled with water. When the water pump is running again, the water in the water tank is pumped away by the water pump, and the negative pressure is generated in the tank. The water in the water tank is added under the action of atmospheric pressure. Inside the water absorption tank, pass through the water tank inside the water tank.


4. The self-priming sewage pump is equipped with a vacuum pump on the suction pipe of the water pump. Before the pump starts, the vacuum pump starts first, so that the water suction pipe of the water pump is filled with water first to ensure the automatic and rapid start of the water pump. This type of water absorption requires a sophisticated automatic control system to ensure proper operation.