Multi-stage impeller axial flow pump for agricultural machinery

Abstract

The invention discloses a multi-stage impeller axial flow pump for agricultural machinery. The multi-stage impeller axial flow pump comprises a pump pipe, wherein the top of the pump pipe is fixedly connected with a sealing shell; the inner surface of the sealing shell is fixedly connected with a motor through a motor frame; the output end of the motor is fixedly connected with a rotating shaft through a coupler; one end of the rotating shaft penetrates through the pump pipe and extends into the pump pipe; the outer surface of the rotating shaft is fixedly connected with guide vanes; and an impeller is fixedly connected to the outer surface of the rotating shaft and is positioned below the guide vanes. The invention relates to the technical field of axial flow pumps. According to the multi-stage impeller axial flow pump for agricultural machinery, a first filter plate is arranged inside a fixing sleeve to block water plants, a convex block on the fixing sleeve and a stepped groove in asliding block are matched, the fixing sleeve can be fixed by utilizing a limiting rod and a limiting block on a fixing block, and the sliding block is pulled through a pull rod to quickly disassemblethe fixing sleeve, so that the water plants on the first filter plate can be conveniently removed.

Description

technical field [0001] The invention relates to the technical field of axial flow pumps, in particular to a multistage impeller axial flow pump for agricultural machinery. Background technique [0002] Axial flow pumps rely on the force generated by the blades of the rotating impeller on the liquid to transport the liquid along the axial direction. There are several types of vertical, horizontal, inclined and through-flow pumps. The impeller of the axial flow pump is generally equipped with 2 to 7 blades and rotates in the cylindrical pump casing. The pump casing above the impeller is equipped with fixed guide vanes to eliminate the rotational motion of the liquid and turn it into axial motion, and convert the kinetic energy of the rotational motion into pressure energy. Axial flow pumps are usually single-stage, and a few are made into two-stage. [0003] Chinese patent discloses an axial-flow pump for agricultural water-proof grass (publication number: CN110529389A3). Th...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-stage impeller axial flow pump for agricultural machinery, which solves the problem that the filter screen part in CN110529389A3 is difficult to disassemble, resulting in difficult cleaning of aquatic plants, and the problem that the filter screen part is too fine to affect the water output rate

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