How does the self-priming pump work?

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The working principle of the self-priming centrifugal pump is that the self-priming centrifugal pump can send the water out due to the centrifugal force. Before the pump is working, the pump body and the inlet pipe must be filled with water to be in a vacuum state. When the impeller rotates rapidly, the blade causes the water to rotate quickly, and the rotating water flies from the impeller under the action of centrifugal force. After the water is thrown, the central portion of the impeller forms a vacuum region. The water of the water source is pressed into the water inlet pipe through the pipe network under the action of atmospheric pressure (or water pressure). This cycle is not enough, you can achieve continuous pumping. It is worth mentioning here that the self-priming centrifugal pump must be filled with water in the pump casing before it can be started. Otherwise, the pump body will be heated, vibrated, and the water output will be reduced, causing damage to the pump (referred to as “cavitation”. ") caused equipment accidents!

There are many types of self-priming centrifugal pumps, and the following methods are common in classification methods.

1 According to the impeller suction method: single-suction self-priming centrifugal pump double suction self-priming centrifugal pump.

2 According to the number of impellers: single-stage self-priming centrifugal pump multi-stage self-priming centrifugal pump.

3 According to the structure of the impeller: open-type impeller self-priming centrifugal pump semi-open impeller self-priming centrifugal pump closed impeller self-priming centrifugal pump.

4 according to the working pressure: low-pressure self-priming centrifugal pump medium-pressure self-priming centrifugal pump high-pressure self-priming centrifugal pump side vertical self-priming centrifugal pump.

Construction Hoist Steel Structure

Construction Hoist Steel Structure means the construction hoist spare parts like Construction Hoist Mast Section, Passenger Hoist Cage, Construction Hoist Wall Tie and so on.

The length of each mast section is 1508mm, the rack is fixed on the mast by three bolts and it can be exchanged. For the single cage hoist there is only one rack on the mast section, and the mast section can be used for the double cages hoist by increasing one rack. The section of the mast is diverse, select one type section according to different hoist. The mast sections are bolted together with M24 bolts and nuts to form mast. The mast is tied to the building with tie-in and is the guide rail of the cage. According to the user`s or circumstance`s request, surface of mast is hot dip galvanized, which can prevent it rusting.

The tie-in(wall tie) is the linked part between mast and building, to keep the stabilization of the mast. Distance between the tie-in is about 6~9m alone the mast. There are several types of tie-in. Select one of them according to need, tie-in can adjust the vertical of mast in definite ranges. According to the user`s or circumstance`s request, surface of the tie-in is hot dip galvanized, which can prevent it rusting.

The cage dimension(L×W×H)(m): 3×1.5×2.5. We can also manufacture cages of other size according to the user`s needs. The material of the cage and the door material can be steel wire weave, aluminum-plastic panel, punched-plate, figured aluminum board or other type according to user`s needs. The gate is equipped with drawing gate,include small turn over gate.




Construction Hoist Mast Section,Building Hoist Mast Section,Passenger Hoist Cage,Construction Hoist Wall Tie, Construction Hoist Anchorage Frame

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