FMZ type self-priming pump principle self-priming pump

Principle of FMZ self-priming pump

Self priming pumps can be divided into the following categories based on their operating principles: 1. Gas liquid mixing type (including internal mixing and external mixing); 2. Water ring wheel type; 3. Jet type (including liquid jet and gas jet). The working process of gas-liquid hybrid self-priming pump: Due to the special structure of the self-priming pump body, there is a certain amount of water in the pump body after the pump stops running. After the pump is restarted, due to the rotation of the impeller, the air and water in the suction pipeline are fully mixed and discharged into the air-water separation chamber. The gas in the upper part of the air-water separation chamber overflows, and the water in the lower part returns to the impeller and mixes with the remaining air in the suction pipeline again until all the gas in the pump and suction pipeline is discharged, completing self-priming and normal pumping. Water ring wheel self-priming pump is a combination of water ring wheel andpump impellerAssembled within a shell, utilizing a water ring wheel to expel gas and achieve self-priming. After the pump is working normally, the passage between the water ring wheel and the water pump impeller can be cut off through the valve, and the liquid inside the water ring wheel can be drained. Jet type self-priming pump, consisting of a centrifugal pump andjet pumpComposed of a combination of (or injectors), relying on an injection device, innozzleCreate a vacuum to achieve suction.

According to the type of matching power machine of the pump, it is divided intoelectric motorEquipped with self-priming pump and diesel engine self-priming pump.

According to the structure and working characteristics of achieving self-priming function, it can be divided into internal sliding type, external sliding type, water ring wheel type, and other types. The transmission methods include direct drive (including inner shaft) and belt drive. Imported diameter of 25-200 millimeters.

Some pumps also have cooling chambers at the bottom of their bearing bodies. When the bearing heats up and causes the temperature of the bearing to rise by more than 70 degrees, coolant can be injected into the cooling chamber through any coolant pipe joint for circulation cooling. The sealing mechanism inside the pump to prevent liquid leakage from the high-pressure area to the low-pressure area is the front and rear sealing rings. The front sealing ring is installed on the pump body, and the rear sealing ring is installed on the bearing body. When the sealing ring wears out to a certain extent after long-term operation of the pump and affects the efficiency and self-priming performance of the pump, it should be replaced.

Principle of FMZ self-priming pump