Eciprocating relay type mad-scraping method and device

Abstract

The present invention relates to a sewage deposit collecting method and device for a concentrator, especially relates to a to-and-fro relay type mud scraping method and mud scraping machine. Said mud scraping machine includes several scraping plates which are equidistantly hung on a railcar. The scraping plates are towed by the railcar to move to and fro to collect the deposit in a deposit tank from one end to the other end. The maximum travel of the railcar is bigger or equal to the distance between the scraping plates, as a result, consistent collection of all the deposit can be realized. The scraping depth and angle of the mud scraping plate in this invention can be adjusted naturally, leading to a result of high work efficiency and labour saving, further, it is suitable for wide work range and has the advantages of reliable work, low investment and long service life.

Description

Technical field [0001] The invention relates to a method and equipment for collecting sewage sediment from a concentrator, in particular to a reciprocating relay type mud scraping method and a mud scraper. Background technique [0002] At present, there are two types of thickeners used in coal preparation plants and sewage treatment plants at home and abroad: climbing thickeners and inclined tube thickeners. The former is a circular structure, and the aggregate crawls around the center and the sediment is collected to the center. Sewage is fed in from the center, and the overflow efficiency of clean water is low. The latter is a rectangular structure. The sediment slides down the wall of the inclined pipe to the sedimentation tank, and is collected by the scraper installed on the endless chain to one end. The efficiency of clear water flowing out of the inclined pipe covered with the water surface is greatly improved, but there are also Some problems, the link of the ring c...

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Problems solved by technology

The latter is a rectangular structure. The sediment slides down the wall of the inclined pipe to the sedimentation tank, and is collected by the scraper installed on the endless chain to one end. The efficiency of clear water flowing out of the inclined pipe covered with the water surface is greatly improved, but there are also Some problems, the link of the ring chain is easy to break after wear and tear, and the ring chain is always kept at the bottom of the pool. Due to equipment failure and sudden power failure and other abnormal parking conditions, the sediment is thick and easy to harden. After the scraper is buried in dead mud The load increases sharply, which makes it difficult to start the car again. In addition, due to the influence of the strength of the chain and the width of the scraper, the working area is limited. The coal preparation plant and sewage treatment plant under construction are getting larger and larger. In many cases, they have to Choose multiple concentrators to use in parallel, which increases the number of equipment, floor area and investment

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