Axial flow pump convenient in blade angle adjusting

Abstract

The invention provides an axial flow pump which is convenient for blade angle adjustment. The present invention comprises a first pump casing and a second pump casing connected with the first pump casing, the second pump casing is arranged above the first pump casing, and the bottom of the first pump casing is provided with a water inlet bell mouth , the upper part is provided with a water outlet elbow, and a power device is provided inside the second pump casing, and the power device is connected to a drive shaft, and the drive shaft passes through the first pump casing and along the axial The center extends downwards, the lower part of the drive shaft is provided with guide vanes and blades, each blade is installed on the shaft end sleeve connected with the drive shaft through a ball joint, each of the balls The head universal joint is connected to the ring-shaped linkage rod through the connecting rod. The positioning plate is welded on the ring-shaped linkage rod. The screw rod passes through the positioning plate and is connected with the adjustment nut. The adjustment nut is set on the The inside of the first pump casing. The structure of the invention is simple and convenient to adjust and durable.

Description

Technical field: [0001] The invention relates to an axial flow pump which is convenient for blade angle adjustment, and belongs to the technical field of mechanical equipment. Background technique: [0002] The impeller of the axial flow pump is equipped with 2 to 7 blades and rotates in the circular tubular 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. The flow range is very large, ranging from 1.8 to 3.6 million cubic meters per hour; the lift is generally below 20 meters. The axial flow pump is generally vertical, the impeller is submerged under the water, and there are also horizontal or inclined axial flow pumps. When the installation position of the impeller of the small axial flow pump is higher t...

AI Technical Summary

Problems solved by technology

[0003] The blade angle adjustment of the existing axial flow pump generally adopts the adjustment structure of the worm gear, the structure is relatively complicated, and the adjustment parts are easily damaged, which affects the service life of the axial flow pump

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