Skimming device for bridge-type sand sucker

Abstract

The invention discloses a skimming device for a bridge-type sand sucker. The skimming device is fixed at the lower parts of the two sides of an operating bridge of the bridge-type sand sucker through an upper bracket; one end of the lower part of the upper bracket is hinged with a skimming rake through a pin shaft, and the other end is hinged with a hook plate; the bottom surface of the hook plate forms a bevel; a triangular outcut is arranged above the bevel; an angle steel is welded on the skimming rake and corresponds to the triangular outcut; a tension spring for drawing and tightening the hook plate and a chain sling for hanging the skimming rake are arranged at the lower part of the upper bracket; and a shedding ejector is fixed at a skimming initial end of a sedimentation tank. During skimming, the skimming rake is hung below the liquid level through the chain sling and climbs along a guide slope at a skimming stroke tail end, so that the angle steel on the skimming rake is automatically hooked in the triangular outcut of the hook plate; during return stroke, the rake bottom is kept being separated from the liquid level as so to prevent floating sludge from being driven to dead corners at the initial end; at a return stroke tail end, the skimming rake is automatically put down by touching of the shedding ejector; and the skimming device has a reasonable structure, is good in automatism, and can remarkably improve the skimming effect.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, in particular to a scum skimming device of a bridge-type sand suction machine. Background technique [0002] Advection sedimentation tank scraper, suction mud machine, aeration grit chamber sand suction machine is an important equipment in the wastewater and slime treatment of municipal, sewage treatment plants, coal mine enterprises, iron and steel enterprises, etc., will settle in the sewage treatment tank The sludge (sand, cinder) at the bottom is collected and discharged out of the pool. Such as figure 1 , figure 2 As shown, the mobile bridge sand suction machine is set on the advection sedimentation tank 10, the working bridge 1 is erected on the end beams 2 at both ends, and the lower part of the working bridge 1 is provided with two sand suction pipes 3 extending into the bottom of the pool. The two outer ends of the working bridge 1 are provided with an end beam drivi...

AI Technical Summary

Problems solved by technology

[0004] The applicant provides a bridge type sand suction machine with a reasonable structure in view of the shortcomings of the above-mentioned existing mobile bridge type sand suction machine. The skimming device can improve the rigidity and service life of the skimming device, and significantly improve the skimming effect

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