Hydraulic centrifugal pump with adjustable impeller

Abstract

The invention provides a hydraulic centrifugal pump with an adjustable impeller. The hydraulic centrifugal pump comprises a base. A motor base is slidably connected to the upper portion of the base, a driving motor is fixedly connected to the motor base, a distance adjusting shaft is rotatably connected to the base through a bearing, and the distance adjusting shaft and a screw hole of the motor base form spiral transmission. The lower portion of a centrifugal pump shell is fixedly connected to the left end of the upper surface of the base through welding, the centrifugal pump shell comprises a rear end cover, and the rear end cover is fixedly connected to the rear portion of the centrifugal pump shell through a threaded connecting piece. A counter bore is formed in the surface of the centrifugal pump shell. An output shaft of the driving motor is connected with a shaft of a variable impeller through a coupler, an adjusting cylinder is rotationally connected to the shaft of the variable impeller, the variable impeller comprises a main impeller, an impeller middle disc is arranged in the middle of the main impeller, and an impeller shaft is fixedly connected to the rear surface of the impeller middle disc. It can be seen that the water pump is provided with various impeller driving structures which can be adjusted and used alternately, the water pump is suitable for various occasions, and the use universality is improved.

Description

technical field [0001] The invention belongs to the technical field of centrifugal pumps, and more specifically relates to a hydraulic centrifugal pump with adjustable impellers. Background technique [0002] Centrifugal pumps work by rotating the impeller to cause the water to move centrifugally. Before starting the pump, the pump casing and the suction pipe must be filled with water, and then the motor is started to drive the impeller and the water to rotate at a high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, and flows through the volute pump casing. There are three common types of impellers in centrifugal pumps, namely closed impeller, semi-open impeller and open impeller. Among them, the closed impeller is composed of blades and front and rear cover plates; the closed impeller has high efficiency and is difficult to manufacture, and is most used in centrifugal pumps; the semi-open impeller is composed of the rear cove...

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Problems solved by technology

[0004] Based on the retrieval of the above-mentioned patents, combined with the structure found in the prior art, when using the centrifugal pump similar to the above-mentioned patent, it is impossible to select the structure of the impeller in the pump according to the water quality in the working area and the required water pressure, so that It is not easy to adapt to the required working environment, and the convenience of use is low

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