Sealing apparatus for end faces of rotary drum

Abstract

The invention relates to the field of environmental protection equipment, and specially relates to a sealing apparatus for end faces of a center rotary drum used for a pressed-film type sludge drier. According to the sealing apparatus for the end faces of the rotary drum, driving oil cylinders are fixedly disposed on supporting bearing pedestals at two sides of the center rotary drum; the protrude end of each driving oil cylinder is fixedly connected with a pull bar with a Y-shaped structure; each branching end of the Y-shaped pull bar is provided with a guide wheel disposed in a sliding sleeve; each sliding sleeve is fixedly connected with one end of a pressure bar mechanism, and the other end of the pressure bar mechanism is fixedly connected with a slide plate; the slide plate is fixedly connected with a sealing plate; and the slide plate can have radical slide along the center rotary drum through a guide groove disposed at the end face of the center rotary drum. Through the pull bar mechanism, the sealing plate is driven to seal the work face of the rotary drum, so that the edge-leakage problem during a sludge pressing process is effectively prevented. Through occlusions of a center rotary drum surface labyrinth and a pressure roller surface labyrinth to a filtering belt, the frictional forces of the rotary drum and the pressure roller to the filtering belt are increased, and the filtering belt sideslip phenomenon caused by skid is prevented.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, in particular to a drum end face sealing device for drum press film type sludge drying equipment. Background technique [0002] Sludge is a kind of solid sediment produced in the process of water and sewage treatment. The main source is municipal sewage, industrial sewage, water dredging and other sewage treatment processes. It has a large output and is very harmful to the human body and the environment. . Sludge has high moisture content (up to 90% or more), high organic matter content, easy to rot and smell, and the particles are finer, the specific gravity is smaller, and it is in a colloidal liquid state. At present, the main disposal methods of sludge are landfill, incineration, composting and drying treatment. However, landfill and incineration of sludge are likely to cause secondary pollution, and composting does not treat heavy metals in sludge. Therefore, the treatment...

AI Technical Summary

Problems solved by technology

However, when the sludge is squeezed by the central drum and the pressure roller, the sludge is stretched into a film under force, which will cause leakage at the end faces on both sides of the drum, which not only reduces the processing capacity of the equipment, but also seriously pollutes the surrounding area of ​​the equipment with the leaked sludge Environment, manual cleaning is required, time-consuming and labor-intensive

[0004] At the same time, when the central drum rotates to squeeze the sludge, the uneven stress on the sludge and the low processing and assembly precision of the central drum will cause the filter belt to deviate, affect the effect of sludge drying treatment, and even cause equipment damage in severe cases

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