Device for increasing work efficiency of centrifugal pump and using method of device

Abstract

The invention relates to the technical field of engineering machines and particularly relates to a device for increasing the work efficiency of a centrifugal pump and a using method of the device. The device for increasing the work efficiency of the centrifugal pump comprises the centrifugal pump and a water suction tube, wherein a water inlet of the centrifugal pump is connected with a water outlet in the bottom of a main water tank; a water filling hole opened and closed through a valve is formed in the top of the main water tank; a water inlet connected with one end of the water suction tube is formed in the top of the side wall of the main water tank; the free end of the water suction tube is arranged below the liquid level of river water; the volume of the main water tank is larger than the sum of the volume inside the water suction tube and the volume of a liquid suction tank of the centrifugal pump; the main water tank comprises a vacuum cavity arranged at the top and a water storage tank arranged at the bottom; the volume of the water storage tank is larger than the sum of the volume inside the water suction tube and the volume of the liquid suction tank of the centrifugal pump; and the main water tank is provided with an auxiliary water tank communicated with the main water tank. By using the device, the net positive suction head of a liquid feeding device of the centrifugal pump is increased, the centrifugal pump is enabled to be durable, the work efficiency of the centrifugal pump is increased, and the service life of the centrifugal pump is prolonged.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a device for improving working efficiency of a centrifugal pump and a method for using the same. Background technique [0002] In the prior art, when the centrifugal pump is in use, there are the following problems: [0003] 1. When the centrifugal pump is not filled enough before starting, because the water poured in flows away from the suction pipe, the gas in the pump cannot be completely discharged when starting, which has the disadvantages of inconvenient filling and time-consuming; [0004] 2. The centrifugal pump is often interrupted during the pumping and drainage process. Due to the air leakage of the suction pipeline or the vortex at the suction port, the submerged depth is too shallow to inhale a large amount of gas; [0005] 3. The management of centrifugal pumps is difficult, and a special person needs to be assigned to monitor during the pumping and d...

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Problems solved by technology

[0003] 1. When the centrifugal pump is not pumped enough before starting, because the water poured in flows away from the suction pipe, the gas in the pump cannot be completely discharged when starting, which is inconvenient to fill the pump and delays time;

[0004] 2. The centrifugal pump is often interrupted during the pumping and drainage process. Due to the air leakage of the suction pipeline or the vortex at the suction port, the submerged depth is too shallow to inhale a large amount of gas;

[0005] 3. Centrifugal pump management is difficult, and special personnel need to be assigned to monitor during the pumping and drainage process. Once an interruption occurs, it is very difficult for one person to complete the restart;

[0006] 4. In the working process of the centrifugal pump in the prior art, the cavitation phenomenon is serious, so that the service life of the centrifugal pump cannot be long, and there are shortcomings of the centrifugal pump head, flow reduction, efficiency reduction and large noise and vibration

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