Coarse rack pull chain underwater steering structure capable of avoiding chain come-off and sticking

Abstract

The invention relates to a coarse rack pull chain underwater steering structure capable of avoiding chain come-off and sticking. The underwater steering structure comprises a coarse rack, a pull chain, an upstream section linear chain groove, a downstream section linear chain groove and an arc chain groove, wherein the coarse rack is fixedly provided with the upstream section linear chain groove, the downstream section linear chain groove and a semicircular chain groove; the lower end of the upstream section linear chain groove is connected with the lower end of the downstream section linear chain through the arc chain groove in a smooth transition mode; the pull chain is arranged in the upstream section linear chain groove, downstream section linear chain groove and arc chain groove; the width of the upstream section linear chain groove body is less than that of the downstream section linear chain groove; and from the lower end of the upstream section linear chain groove to the lower end of the downstream section linear chain groove, the width of the arc chain groove gradually increases. The pull chain is always restricted to the inside of the continuous chain groove body when operating underwater, thereby completely avoiding the possibility of pull chain come-off.

Description

technical field [0001] The invention relates to a traction chain steering structure, in particular to an underwater steering structure of a coarse grid traction chain which can avoid detachment and jamming. Background technique [0002] At present, the main purpose of the coarse screen is solid-liquid screening, which is suitable for the pretreatment process of municipal sewage treatment plants, such as municipal sewage treatment plants and sewage treatment facilities in residential quarters, as well as at the water inlet of urban channels, and can also be used in waterworks and The cooling water inlet of the power plant is used to separate debris to protect the impeller of the pump and reduce the processing load of the subsequent process. It is a domestic advanced solid-liquid screening equipment. The existing underwater steering structure of the coarse grid traction chain is composed of the coarse grid 1, the traction chain 2, the light wheel 3, the end plate 4 and the mai...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the light wheel 3 is fixed on the side wall of the coarse grid 1 by using standard parts, the strength is not enough, which will cause the vertical shaft 5 or the side wall of the coarse grid 1 to deform, causing the traction chain 2 to be unchained;

[0005] 2. After the traction chain 2 has been used for a long time, the length of the traction chain 2 will become longer, and the traction chain 2 will be separated from the light wheel 3, and the steering will have problems

Images