When using a sewage treatment mechanical grille, the stainless steel rake may have a deformation problem, so why is there a deformation problem? How should attention be paid to prevent the above phenomenon? The main reason is that there is too much dirt and high concentration in the flood season, which causes the single rake to be overloaded, and the rake tube deforms and causes failure. The rake tube is an important moving part of the rotary cleaning machine, which plays a dual role of supporting the chain and preventing the chain from derailing and scouring the dirt. The middle part is the weak link of the whole body, and many related problems, such as chain plate twisting, broken chain, etc., are mostly caused by the deformation of the rake tube, so its strength and rigidity must be sufficient. The material of the rake tube should have sufficient diameter and wall thickness, generally the width of the sweeper with a span of less than 6m . The rake pipe should be checked according to the concentrated load of 10,000 N · m, its deflection should not be greater than 1/250 , and the wall thickness of the steel pipe should not be less than 6mm . For larger-sized rotary cleaners, multiple traction chains can be considered to improve the force-bearing condition of the rake tube, or the middle of the rake tube can be locally strengthened to make it a variable-section force-bearing member.

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