Horizontal centrifugal self-priming pump self-priming pump

Horizontal centrifugal self-priming pumpThe pump adopts an axial liquid return pump body structure. The pump body is composed of a suction chamber, a liquid storage chamber, a scroll chamber, a liquid return hole, a gas-liquid separation chamber, etc. After the pump starts normally, the impeller absorbs the liquid in the suction chamber and the air in the suction pipeline together, and mixes them in the impeller. Under the effect of centrifugal force, the liquid carries the gas to the outer edge of the scroll chamber, forming a white foam belt with a certain thickness and a high-speed rotating liquid ring on the outer edge of the impeller. The gas-liquid mixture enters the gas-liquid separation chamber through a diffusion tube. At this point, due to the sudden decrease in flow rate, lighter gases are separated from the mixed gas-liquid mixture, and the gases continue to rise and be discharged through the pump body outlet. The degassed liquid returns to the storage chamber and enters the impeller again through the reflux hole, where it mixes with the gas sucked in from the suction pipeline inside the impeller. Under the action of the high-speed rotating impeller, it flows towards the outer edge of the impeller again . As this process repeats itself, the amount of air sucked into the pipeline continuously decreases until the gas is completely absorbed, completing the self-priming process, and the pump is put into normal operation.

Horizontal centrifugal self-priming pumpMaintenance and disassembly

The characteristic of this pump is its simple and reliable structure, as well as its durability. Under normal circumstances, the pump generally does not require frequent disassembly and maintenance. When a fault is discovered, it can be eliminated at any time.

1. When maintaining the pump, several main parts should be noted:

A、 Rolling bearings: When the bearings wear out to a certain extent after long-term operation, they need to be replaced.

B、 Front sealing ring and rear sealing ring: When the sealing ring is worn to a certain extent, it needs to be replaced.

C、 Mechanical seal: Mechanical seals should generally not be disassembled for inspection without leakage. If there is a serious leakage at the leakage port at the lower end of the bearing body, the mechanical seal should be disassembled and inspected. When installing and dismantling mechanical seals, they must be handled with care, paying attention to the cleanliness of the mating surfaces, protecting the mirror surfaces of the stationary and moving rings, and strictly prohibiting knocking and collision. The main reason for leakage caused by mechanical sealing is due to the rubbing of the friction pair mirror surface. The repair method is to grind the friction pair end face to restore the mirror surface. Another reason for mechanical seal product leakage is improper installation of O-rings or aging caused by deformation. At this point, the O-ring needs to be replaced for reassembly. FMZ self-priming pump price