How to improve the reliability of self-filling type water pump?

When the pump suction from the pool, if the use of self-filling-type absorbent, enable the suction tube has been filled with water, the pump starts, eliminating the need for irrigation exhaust the time, can quickly put into operation, improve the automation and reliable pump start degree.

Self-filling type often used method is to pump water absorption axis of elevation of water level below the pool work height. Architecture, this method commonly used in a basement of the layout of the time, the pump house set in the basement, underground pool set in the basement next to the pump house or outdoor. This absorption method, work the pool water level higher than the pump axis elevation, suction tube has been filled with water, to ensure that the water pump, quick start.

Not for the basement of the building, the self-filling-type absorbent methods have difficulties. Because this construction, the general layout of the pump room on the ground, if the underlying pool pump house next, especially the larger size of the fire pool, it will take up a lot of bottom floor area, the construction units generally will not agree.

In this case, the pool usually set up outside the building, buried in the ground. This work led to the pool water level lower than the pump axis of elevation, the pump can not achieve self-filling-type absorbent, at this moment, can adopt the following several ways to solve this problem.

The first method is the end of the tube is installed in the pump suction end of the valve of the water. Suction end of the valve is actually a check valve, it ensures that only by the water flow into the suction tube can not turn the clock back, so if the suction pipe full of water, despite the elevation axis pump the water level above the pool, but because the end suction the role of valve, the suction tube into the pool water will not enable the suction pipe, has been filled with water, to ensure the pump can automatically, rapidly start. The reliability of this method by absorbing effect, quality such as the suction end of the valve, close lax, water leakage, water pipe will gradually shed the water pool, a long time, no water suction pipe, leading to still need artificial irrigation pump start.

Water the following methods can be used to compensate for this deficiency.

The second approach is to use other water replenishment. It is the way in the first absorbent based on the check valve in the pump outlet pipe, is installed in front of a pipe, and the pipe connected to the outside of the municipal water supply or other external sources, to pump water pipe water supplement valve, left out of the water, the tube filled with water. The reliability of this method by absorbing effect of outdoor water, water in the water a long time outdoor conditions, water suction tube may be empty, so when they need to manually start the pump irrigation.

The third way is the improvement of the second kinds of water absorption, use of roof water tanks to supply water to the pump suction pipe. This mode is not affected by outside sources without water, high reliability, suitable for a rooftop water tank of the building, roof water tanks for no building, can also be a small water tank is arranged in the pump room to supply water to the pump suction pipe.

The fourth way to set the pump suction tank before, as shown in figure 5. In this way the need to pump water pipe is provided with a water tank, in the first run, the tank should artificial filled with water, the first time after stopping operation, because the water tank is higher than the height of the water pipe in pipe the water height, although the pool water level is lower than the tank water level, the water tank do not turn the clock back, into the water, so water tank, can store a certain amount of water, because the outlet water tank (i.e. pump suction pipe) is lower than the height of the water pipe, so it can ensure the pump suction tube filled with water, after the pump is running, the water is pumped out, there is negative pressure the tank, the water in the pool at atmospheric pressure is added to the water tank, the water tank inside the pool.

Have continued into the water pump, is continuously output. This means safe and reliable water absorption, but the absorption can be set, and the greater the volume of water suction pipe the greater the volume of the tank, not only increase cost, but also take up some space for water pump room.

Fifth ways to set the vacuum pump water pipeline, water pump before the start, the vacuum pump starts, to pump water pipe filled with water first, ensure that the water pump, quick start. This absorption method needs a perfect automatic control system to ensure

Vacuum pump before the pump start, and also the high cost, reliability of the automatic control system.

Through the above analysis shows that, self-filling-type absorbent means a high degree of safety and reliability, when not using self-filling-type absorbent way, should be selected water pump suction method according to the actual situation of project, to achieve safe and economic.

Note: the above said situation of self-priming pump is more, some listed below are the sincere pump valve company common self-priming pump:

1, FZB fluorine plastic self-priming pump 2, ZW series self-priming pump 3, ZX-L series self-priming pump, ZX series self-priming pump 4