Mud scraper

Abstract

A mud scraper relates to the field of sewage treatment, in particular to an improvement of a mud scraper for sewage treatment. According to the mud scraper, inflow water stirring is reduced, and the contact time of sewage and a flocculating agent is prolonged, so that the effluent efficiency is guaranteed. The mud scraper comprises a tank body and a working bridge fixed above the tank body. A flowstabilizing cylinder is fixedly arranged on the bottom surface of the working bridge; a water inlet is formed in the upper portion of the flow stabilizing cylinder; a plurality of stabilizing plateslocated below an outlet of a water inlet channel are arranged on the inner wall of the upper portion; one end of each stabilizing plate is evenly fixed to the inner wall of the upper portion, and theother end of the stabilizing plate is fixed to the outer wall of a connecting ring; the connecting ring is arranged on a mud scraping shaft in a sleeving mode; and the stabilizing plates are arrangedobliquely to the horizontal plane. The flocculation effect is improved, and the effluent efficiency is finally ensured.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an improvement of a mud scraper for sewage treatment. Background technique [0002] There is a kind of mud scraper in the prior art (such as the application number 201520214121.6 published by the State Intellectual Property Office on August 12, 2015, and the patent named mud scraper), including a working bridge, which is equipped with a driving mechanism For the driven mud scraping shaft, there is a guide tube under the working bridge, and the upper part of the guide tube is connected with a water inlet pipe; the scraper shaft is equipped with a scraper arm and a scraper arm support, and a scraper is provided on the scraper arm. The scraper arm support is connected by the scraper arm support steel bar, and a tensioning device is provided on the scraper arm support steel bar; the bottom end of the mud scraper shaft is installed with an underwater bearing seat through an underwater ...

AI Technical Summary

Problems solved by technology

Its disadvantage is that the flow rate of sewage in the water inlet pipe is too fast, which is easy to stir the liquid in the guide tube, so that the liquid in the concentrated sedimentation tank near the center cannot rise evenly, resulting in the turbidity of the supernatant

In addition, for a suspension with a small specific gravity, the contact time between the flocculant and the sewage is not enough, and the settling time is not enough, resulting in unclear supernatant, poor solid-liquid separation effect, difficult solid-liquid separation, and easy to produce a large amount of unqualified liquid , increasing the cost of the next process and a large amount of manpower and material resources

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