Buoyancy platform displacement adjusting mechanism for sewage tank closure

Abstract

The invention discloses a buoyancy platform displacement adjusting mechanism for sewage tank closure. The mechanism comprises a winch, a pull rope, a pull block and a steering column, wherein a bend wheel is rotationally arranged on the steering column, multiple wire passing holes are formed in the pull block, limiting grooves are formed in two ends of the pull block, a rotating shaft is arrangedon the wall of each limiting groove, ends of the rotating shafts sequentially and movably penetrate through the limiting grooves and the multiple wire passing holes in the direction pointing to the center of the pull block from the end of the pull block, clamping grooves are formed in the walls of the limiting grooves, a clamping block is arranged on the outer circumferential wall of a limiting barrel, sliding chutes are formed in the outer circumferential walls of the rotating shafts, annular grooves are formed in outer circumferential walls of outer side ends of the rotating shafts in the circumferential direction of the rotating shafts, and a slider is arranged on the inner circumferential wall of the limiting barrel. The position of a buoyancy platform can be finely adjusted accordingto the welding progress of HDPE impermeable membranes on the premise that stable movement of the buoyancy platform is guaranteed, and the condition that the welding requirement cannot be met due to too large difference between overlapping areas of adjacent two rolls of HDPE impermeable membranes can be prevented.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a buoyancy platform displacement adjustment mechanism for sewage pool closure. Background technique [0002] Urban sewage is a general term for sewage discharged into urban sewage systems. In combined sewer systems, production wastewater and retained stormwater are also included. Urban sewage mainly includes domestic sewage and industrial sewage, collected by the urban drainage pipe network and transported to sewage treatment plants for treatment. Since the daily treatment capacity of the sewage treatment plant is limited, and the speed of sewage production is greater than the speed of sewage treatment, it is necessary to repair a special pool for the temporary storage of sewage beyond the capacity limit of the sewage treatment plant; but in the temporary storage During this period, due to the chemical reaction of the sewage after being exposed to the sun or in contact with the ...

AI Technical Summary

Problems solved by technology

Covering the sewage pool with HDPE anti-seepage membrane can ensure that the sealing effect of the sewage pool meets the requirements, but because the construction volume of the general sewage pool is more than 4,000 cubic meters, and the exposed area of ​​the sewage pool is usually more than 1,000 square meters , in this regard, when using HDPE anti-seepage membrane to lay the opening of the sewage pool, it is necessary to use the HDPE anti-seepage membrane in rolls, and because the weight of the HDPE anti-seepage membrane in rolls is too large, a buoyancy platform needs to be set up in the sewage pool , to facilitate the laying of workers; but when welding between two adjacent rolls of HDPE anti-seepage membrane, it is necessary to continuously adjust the position of the two rolled HDPE anti-seepage membranes to ensure seamless welding between the two , and due to the large volume of the sewage tank, the area occupied by the buoyancy platform on the water surface is the same as the area of ​​a roll of HDPE anti-seepage membrane on the water surface, that is, when the buoyancy platform is pulled, once the local force on the buoyancy platform is uneven, It will easily lead to inaccurate position adjustment of the HDPE anti-seepage film, which will directly reduce the welding accuracy of two adjacent rolls of HDPE anti-seepage film, making the sealing performance composed of HDPE anti-seepage film invalid

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