Self-suction centrifugal pump principle and precautions

Self-priming centrifugal pump so the liquid can be sent out due to the role of centrifugal force, the pump before work, the pump body and inlet pipe must be filled with a solution to form a vacuum state, when the impeller rapid rotation, the blade to promote rapid rotation of water, rotating The water flies from the impeller under centrifugal action. After the water in the pump is thrown off, the central part of the impeller forms a vacuum zone and the liquid is forced into the inlet pipe at atmospheric pressure through the pipe network. This endless cycle, you can achieve continuous pumping. In the whole process of operation should be noted that: Self-priming centrifugal pump must be started before the pump casing full of water before starting, otherwise it will cause the pump heat, vibration, reduce the amount of water, causing damage to the pump and equipment ACCIDENT. The pump is widely used in factories, mines, oil fields, cities, power plants, from the transport height of not higher than 80 degrees or other physical and chemical properties similar to water and other liquids. Understand the principle of self-priming centrifugal pump, we need to pay attention to what? 1, by the pump vacuum suction device to absorb their work. Suction vacuum system with a clutch device, when the pump after normal suction work through the clutch device to make vacuum suction device to stop working to reduce power consumption and extend the service life. When you need to vacuum device work can also be achieved through the clutch device. There are two clutch modes: manual clutch, automatic clutch. 2, pay attention to the operation of the power machine, observe the water temperature, oil temperature is normal; pay attention to unit sound and vibration, when the unit vibration is too large or noise, often the volute type pump failure signal, you must shut down and troubleshoot troubleshooting; No floating at the nozzle, the end of the submerged depth of the valve is sufficient; the fastening is loose, the inlet pipe tightness is not tight. Volute in the open pump parking. Centrifugal pump parking, you should slowly close the outlet valve, gradually reduce the speed of the power machine, so that it is lightly loaded, and finally stop the power machine. 3, self-priming centrifugal pump maintenance and maintenance: before starting the bolt should check whether the loose fastening, there is no abnormal noise, lubricating oil adequacy, etc., as early as possible to rule out possible problems in order to avoid losses. S-level pump should be started before the start of irrigation. Unscrew the bleed air plug before filling, then add water until it comes out from the bleed hole, then turn the pump shaft a few times. If you continue to run the water, it indicates that the water is full, and then close the bleeder plug to prepare for starting. 4, run-time precautions: Always clean the surface of the pump; lubricated with oil, use a replacement oil every 1 month; lubricated with butter, replace butter once every six months. Also avoid pumping muddy water with excessive sediment, or impeller, mouth ring, packing, etc. easy to wear. Oil pump in the winter before the preservation, should be fully overhauled, the scope includes power machines, transmission equipment and electrical equipment.

Sulphates

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