Method for ensuring inclination angle of blades of water pump

Abstract

The invention provides a method for detecting the inclination angle of blades of a water pump. The method is simple and accurate in measurement and high measurement efficiency. The method is characterized by comprising the following steps of: firstly, marking contour lines on each blade, and ensuring that the lateral distances from all contour lines to the rotation center of a rotor body are equal; secondly, installing and fixing each blade on the rotor body; and detecting the vertical height difference of the contour lines on each blade. When all the vertical height differences are equal, the inclination angles of all blades on the rotor body are consistent. When all the vertical height differences are not equal, the inclination angles of the blades are adjusted until the vertical height difference of all contour lines are consistent.

Description

technical field [0001] The invention relates to the technical field of installation detection of water pump blades, in particular to a method for ensuring the inclination angle of water pump blades. Background technique [0002] The water pump blade 1 is installed on the rotor body 2, see figure 1 Usually, the installation requires that the inclination angles of the blades be the same. Since the blade surfaces are mostly curved surfaces, generally the inclination angle of the blades is usually ensured during the manufacturing process of the blades. Draw the angle line at the end, draw the zero degree line on the rotor body, and then process the positioning holes of the blade and the rotor body according to the angle line. Whether it is the blade or the rotor body, there is a large alignment error when processing the positioning hole, and the comprehensive accumulated error is relatively large. Moreover, the error is generated on the blade shaft, where the measurement of th...

AI Technical Summary

Problems solved by technology

Whether it is the blade or the rotor body, there is a large alignment error when processing the positioning hole, and the comprehensive accumulated error is relatively large

Moreover, the error is generated on the blade shaft, where the angle measuring instrument is used to measure the rotation angle. Due to space constraints, the measurement is difficult and the error is large.

At the same time, since the angle measured here is at the shank, when it extends to the edge of the blade inlet and outlet, the error will also be amplified, so the accuracy of the blade installation angle is poor and the accuracy is not easy to guarantee.

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