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Different types of self-priming pumps work similarly

Author: Source: Posted On: 2019/5/24 16:08:48

  As a well-known self priming pump manufacturers in China, Borra is rich in products. The principle uses a unique patented impeller and separation disc to force the gas-liquid separation to complete the inhalation process. Its shape, volume, weight and efficiency are similar to those of pipeline pumps. Vertical self-priming pumps do not require auxiliary equipment such as bottom valves, vacuum valves, and gas separators. It does not need to be filled at the time of normal production start-up, and has a strong self-priming ability. It can replace the currently widely used submerged pump (low-level liquid transfer pump) and can be used as an auxiliary device such as a separator. No need for liquid filling during normal production start-up, it has strong self-priming ability, can replace the currently widely used submerged pump (low liquid pump), can be used as circulating pump, tank truck, self-priming pump, motorized pump And other uses.

  The working principle of the self-priming pump is: fill the pump casing with water before starting the pump (or water in the pump casing itself). After the start, the impeller rotates at a high speed to make the water in the impeller channel flow toward the volute. At this time, the inlet forms a vacuum, so that the inlet water stops the door, and the air in the suction pipe enters the pump and reaches the outer edge through the impeller channel. The self-priming pump is a self-priming centrifugal pump, which has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life and strong self-priming capability. The pipeline does not need to be installed with a bottom valve. It is only necessary to ensure that the pump body has a quantitative liquid before storage. Different materials can be self-priming pumps of different materials.

  The self-priming pump can be divided into fluoroplastic self-priming pump, stainless steel self-priming pump and cast iron self-priming pump according to the material. According to the structure, it can be divided into a magnetic self-priming pump and a centrifugal self-priming pump. The working principle is: before the start, the pump cavity is filled with liquid. After the start, the impeller rotates at a high speed to make the water in the impeller channel flow to the volute, and the inlet forms a vacuum, so that the inlet water stops the door and the air in the suction pipe enters the pump. And through the impeller channel to the outer edge.

  According to the principle of action, it is divided into the following categories:

  1. Gas-liquid mixing type (including internal mixing and external mixing); Due to the special structure of the self-priming pump body, after the pump stops, there is a certain amount of water in the pump body. After the pump is started again, it is inhaled due to the rotation of the impeller. The air and water in the pipeline are thoroughly mixed and discharged to the gas-water separation chamber. The gas in the upper part of the gas-water separation chamber overflows, and the lower water returns to the impeller, and is re-mixed with the remaining air in the suction pipeline until the pump and the suction pipe are inside. The gas is completely discharged, self-priming is completed, and water is pumped normally.

  2. Water ring wheel type; combine the water ring wheel and the water pump impeller in one casing, and discharge the gas by means of the water ring wheel to realize self-priming. When the pump is working normally, the passage of the water ring wheel and the pump impeller can be intercepted by the valve, and the liquid in the water ring wheel can be drained.

  3. Jet type (including liquid jet and gas jet); combined by a centrifugal pump and a jet pump (or ejector), relying on the injection device to create a vacuum at the nozzle to achieve suction.



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