The self -suction pump is a single -stage single -suction lyric cardia that produces a self -absorbing effect by the special structure of the pump itself. Compared with ordinary centrifugal pumps, there is a significant difference in the structure of the pump body: one is that the pump inlet position is improved, and sometimes the inhalation valve is also installed; the other is to set up a gas separation room on the water side of the water.

The pump outside the pump is a self -priming device outside the pump, such as a vortex pump, a water ring vacuum pump, a radiation pump, and a manual pump.

Compared with ordinary centrifugal pumps, the self -suction pump has a compact structure and a simple use operation. It not only eliminates the trouble of drooling a lot of water before starting, but also eliminates the low valve of the water inlet pipe, reducing the water inlet resistance, increasing the water output of the pump water outlet, However, the efficiency of ordinary centrifugal pumps of the same specifications is 3%to 5%lower than that of ordinary centrifugal pumps. There are more self -suction pumps on light small spray irrigation units and pipe irrigation units.

There are many specifications of self -absorbing cardiac pumps, including ZX type, TC type, BPZ type and ZB type.

(1) ZB -type performance range flow of 2 to 200 meters 3/h, ranges from 8 to 100 meters, and the supporting power is 0.25 to 45 kilowatts.

(2) Structural characteristics are divided into electric motor supporting self -suction pumps and diesel engine supporting pumps according to the supporting power machine type of pump. The structure and work characteristics of self -absorbing function can be divided into internal slippery, outer slippery, water ring wheel and other types. There are direct transmission (including inner shafts) and belt transmission. The import diameter is 25 to 200 mm, with a total of 10 calibers and 54 specifications.