Mud scraping device in sewage treatment equipment

Abstract

The invention discloses a mud scraping device in sewage treatment equipment. The mud scraping device comprises a lifting frame and two sets of mud scraping devices located at the lower end of the lifting frame, wherein the two sets of mud scraping devices are located at two sides of a vertically arranged to-be-cleaned filter plate separately; the mud scraping devices lift along with the lifting frame at the same time; a square frame plate formed by inclined edges and straight edges is arranged in the filter plate; a boss is arranged on the surface of the frame plate; a rotatable and telescopic scraper blade is arranged on each mud scraping device; each scraper blade is always matched with the irregular surface of the filter plate; a water spray device is also arranged on the lifting frame and communicates with a water inlet pipe located at one side of the lifting frame; and the water spray device is matched with the mud scrapping devices to spray and clean the filter plate. Aiming at the defects of the prior art, each scraper blade is partitioned, and propulsion and rotation control of each block are individually controlled, so that efficient cleaning on a polygonal filter plate or a non-flat filter plate is achieved through coordination with the water spray device, thereby improving the operation efficiency.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a mud scraping device for filter plates in sewage treatment equipment. Background technique [0002] The filter press is mainly used for sewage treatment in mining, metallurgy, chemical industry, electronics industry and environmental protection engineering. It is a widely used solid-liquid separation equipment. [0003] At present, the high-pressure plate and frame filter presses produced in my country all have the problems that the mud cake sticks to the filter cloth and is not easy to fall off, and the mud scraping device is not perfect. The method of cleaning the sludge on the filter plate of the existing van filter press in the industry is just shaking or simply scraping the filter plate. When the sludge on the filter plate has a high water content, the sludge adhesion is very strong and it is difficult to shake it off. Some even need artificial secondary rapping t...

AI Technical Summary

Problems solved by technology

Secondly, the desliming is not complete enough, and the vibration frequency is small

Third, the vibration intensity is limited, and the vibration time is long, which affects the time of batch sludge filtration and reduces the efficiency of sludge dewatering; the vibration time is short, and the sludge is not easy to fall off

The above structure, for a flat filter plate, can be cleaned once, but for the non-flat structure such as protrusions on the surface of the filter plate, there will be multiple pneumatic equipment and repeated operations for multiple cleanings, thereby reducing the cleaning efficiency

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