How to increase the self-priming pump self-priming capacity?

Household self-priming pump is self-priming ability, can make the water pump in the high places in the low level of the liquid or water suction pump cavity through the impeller flung in a high speed liquid, to handle liquid and promotion purposes. Household self-priming pump the service life of the product is unqualified or too long, sometimes self-priming ability to drop, to reach the purpose we need, but self-priming pump because it is the different way of imbibition, can be divided into the mixed type self-priming pump, internal mixing type self-priming pump and powered by the pump itself water vacuum pump self-priming pump structure in the form.

Here are several ways to improve the service life of self-priming pump, self-priming ability:

The first way is also the most simple way: self-priming sewage pump set vacuum pump in the pump suction pipe on the road, before starting the pump, vacuum pump to start, first make the pump suction tube is full of water, first ensure the pump automatically, rapid start. This way of absorbing perfect automatic control system is needed to guarantee the normal work.

The second method relative to the following is also belongs to the relatively simple: self-priming pump to reduce the feed water pipe bend, drop height and horizontal intervals.

The third method is a bit of trouble, but also is very useful: self-priming pump set before the pump suction tank. This way needs to be on the water pump suction pipe to set up a water tank, pump before the first run, the tank should be artificial filled with water, the first run after resting, as a result of absorbing water tank inlet pipe height above the tube surface height, although the water level below the height of the tank water in tank, tank of water will not flow back, into the pool, so the water tank can store a certain amount of water, and as a result of the water tank outlet pipe (i.e., the water pump suction pipe) height below the tube surface height, so can ensure the pump suction pipe is full of water, water pump to run again, the water in the pitcher is draining pump, tank pressure, on the pool of water at atmospheric pressure under the action of supplement to the water tank, by absorbing water tank inside the pool.

Finally a way to self-priming sewage pump suction pipe end suction bottom valve installation. Suction bottom valve is actually a check valve, it ensure that water can only be by the pool in suction pipe and can't go back, so if the suction tube is full of water, although the pump axis elevation above the pool water level, but because of the suction bottom valve, the suction tube of water will not flow into the pool, can make the suction tube is full of water all the time, ensure the pump automatically, rapid start.