Axial flow pump with good sealing effect and unidirectional flow limiting

Abstract

The invention relates to the technical field of application of axial flow pumps, and discloses an axial flow pump with good sealing effect and unidirectional flow limiting. The axial flow pump with the good sealing effect and the unidirectional flow limiting comprises a pump body, wherein a top cover is fixedly connected to the top of the pump body, a mounting flange plate is fixedly connected tothe left side of the pump body, and the pump body and the mounting flange plate are fixedly connected through a locking bolt. The axial flow pump with the good sealing effect and the unidirectional flow limiting is provided, a first filtering box and a second filtering box are arranged at a joint connecting position of the pump body, three layers of filtering layers inside the filtering boxes cansequentially filter impurity particles, so that the impurity filtering effect can be achieved, the connection position of the pump body and the two filtering boxes are fixed through the mounting flange plate and a butt jointing horn trumpet, the synchronous sealing of sealing rubber layers and sealing rubber blocks is arranged inside the filtering boxes, so that the axial flow pump is good in sealing effect, and then the problems that the axial flow pump is insufficient in sealing capability and the axial flow pump sucks the impurities at the same time while in the water, so that the inner axial flow pump is caused to be blocked or structurally damaged are effectively solved.

Description

Technical field [0001] The invention relates to the technical field of axial flow pump application, in particular to an axial flow pump with good sealing effect and unidirectional flow restriction. Background technique [0002] Axial flow pump is a pump that transports liquid along the axis by the force generated by the blades of the rotating impeller. There are several types of vertical, horizontal, oblique and tubular. The axial flow pump impeller is equipped with 2-7 blades. , It rotates in the tube-shaped pump casing, and the pump casing on the upper part of the impeller is equipped with fixed guide vanes to eliminate the rotational movement of the liquid and turn it into axial movement, and convert the kinetic energy of the rotational movement into pressure energy. Pumps are usually single-stage, and a few are made into two-stage. [0003] Chinese patent CN 104389796 A proposes a two-stage impeller built-in submersible axial flow pump. The motor in this invention is placed ou...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an axial flow pump with good sealing effect and one-way flow limitation, which has the advantages of good sealing effect and filtering impurities, etc., and solves the problem that the axial flow pump has insufficient sealing ability and the axial flow pump is in water. When the impurity is pumped in at the same time, the pump will be blocked or the structure will be damaged.

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