The first type: the suction bottom valve is installed 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 pump axis is higher than the working water level of the pool, there is a suction bottom. The function of the valve prevents the water in the suction pipe from flowing into the pool, so that the suction pipe is always filled with water, ensuring that the water pump can be started automatically and quickly. The reliability of this water suction method is affected by the quality of the suction bottom valve. For example, if the water is not tightly closed or leaks, the water in the suction pipe will slowly flow into the pool. After a long time, there will be no water in the suction pipe, causing the pump to start. Manual irrigation is required.
Second: The self-priming sewage pump reduces the bends, drop height and horizontal distance of the inlet pipe.
Third: The self-priming sewage pump is equipped with a suction tank before the pump. This method requires a suction tank to be installed on the suction pipe of the pump. Before the first operation of the pump, the tank should be filled with water manually. After the first operation is stopped, because the height of the inlet pipe of the suction tank is higher than the height of the water surface in the pipe, although The water level in the pool is lower than the water level in the tank, and the water in the tank will not flow back into the pool. Therefore, a certain amount of water can be stored in the suction tank, and because of the height of the outlet pipe of the suction tank (that is, the suction pipe of the water pump) It is lower than the height of the water surface in the pipe, so it can ensure that the suction 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 negative pressure appears in the tank. The water in the pool is replenished under the action of atmospheric pressure. In the suction tank, through the suction tank in the pool.
Fourth: The self-priming sewage pump is equipped with a vacuum pump on the water pump suction line. Before the water pump starts, the vacuum pump is started first, so that the water suction pipe of the water pump is filled with water first to ensure that the pump starts automatically and quickly. This type of water absorption requires a complete automatic control system to ensure normal operation.
Post time: 2021-11-30
