Rake rotating type grille pollutant removing device

Abstract

The invention discloses a rake rotating type grille pollutant removing device which comprises a pool body and a drum-shaped screen arranged in the pool body, wherein the drum-shaped screen is horizontally immersed in the pool body and comprises a plurality of drum-shaped grid sheets, intermediate spacer rings and screws; the drum-shaped grid sheets are serially connected and are stacked; one intermediate spacer ring is cushioned between every two adjacent drum-shaped grid sheets; earholes are uniformly formed in each drum-shaped grid sheet; the screws penetrate through the earholes for connecting and fixing; each drum-shaped grid sheet is an unclosed ring; an opening of each drum-shaped grid sheets is formed in the top end of the drum-shaped screen; supporting seats are arranged on side walls at two sides of a central axis of the drum-shaped screen, and are fixedly connected with the pool body and the pool wall; a slag collecting hopper of a screw conveyor is right opposite to the lower part of the 30-40-degree opening of the drum-shaped screen; a tooth rack rotating arm is arranged on a main shaft at one end of the screw conveyor, and extends into the drum-shaped screen; a rotating tooth rack is hinged to the end of the tooth rake rotating arm; rake teeth of the rotating tooth rake mutually fit in with clearances between the drum-shaped grid sheets; the rake rotating type grille pollutant removing device has the advantages of high water passing amount, high slag removing efficiency, effectiveness in prevention of blocking, lower energy consumption and lower manufacturing cost.

Description

technical field [0001] The invention relates to the field of environmental protection water treatment, in particular to a drum type grid. Background technique [0002] Sewage generally contains some suspended impurities, which need to be separated from the water before sewage treatment to degrade organic and inorganic suspended solids in sewage, and provide indispensable pretreatment for the advanced treatment of sewage and to prevent the blockage of pipe fittings and equipment to ensure that the effluent meets the standard equipment. [0003] In the prior art, more fine grids adopt rotary grid decontamination machines such as Chinese patents: CN102398948A, CN103145205A and other structures. The front side of the grille is salvaged from the sewage in the canal. When the slag on the back side moves to the top of the grille, it will fall into the hopper box by gravity or the rotation of the scraper to achieve solid-liquid separation. The disadvantage of this kind of grille d...

AI Technical Summary

Problems solved by technology

But there are also some deficiencies in actual use: First, there is an installation angle of about 35° between the equipment and the horizontal channel, so that the filter screen cylinder and the water level also have this angle, so the actual filtration area of ​​the filter screen cylinder is less than the entire 1 / 3 of the net tube area, the effective filtration area is reduced, that is to say, the net tube is made larger or the number of equipment is increased to meet the water flow requirements

Secondly, because the entire mesh cylinder is buried at the bottom of the channel and the rotating bearing at the bottom is left in the sewage, the underwater rotating bearing will be stuck due to long-term immersion in sewage due to corrosion and poor lubrication, resulting in the failure of the entire equipment to operate normally

For fibrous dirt, it is easy to hang upside down on the mesh, and the surface of the filter mesh is prone to conjunctiva after long-term operation. Even with the flushing of the pressure spray device, the surface of the filter mesh cannot be completely rinsed, so general manual cleaning and underwater bearing Maintenance is inevitable. Since the equipment is installed at the bottom of the sewage ditch, it is difficult and dangerous to manually go down into the ditch to clean and maintain it. If the sewage is not intercepted or the equipment is hoisted, there is no need to replace the underwater bearing and check the lubrication. possible

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