Disc type dreg and sand removing machine

Abstract

The invention relates to the technical field of sewage pretreatment devices, and in particular to a disc type dreg and sand removing machine which comprises a tank body, a water inlet, a central cylinder, a scraper, a spiral conveyer, a speed reducer, a circular filtering disc, a water outlet and a dreg outlet, wherein the spiral conveyer, the central cylinder and the circular filtering disc are coaxially mounted inside the tank body; the spiral conveyer is connected with the speed reducer; the spiral conveyer is positioned in the center of the central cylinder; the scraper is arranged on the inner wall of the central cylinder; the circular filtering disc is arranged in the central cylinder in a sleeving manner; the circular filtering disc is communicated with the central cylinder; the water inlet and the water outlet are both communicated with the central cylinder; the dreg outlet is communicated with the spiral conveyer. The disc type dreg and sand removing machine integrates three functions of grid dreg removal, sand removal and solid-liquid separation, is compact in structural design and small in floor space, and comprehensive pretreatment on sewage can be achieved.

Description

technical field [0001] The invention relates to the technical field of sewage pretreatment devices, in particular to a disc-type slag and sand remover. Background technique [0002] At present, in the sewage treatment process, the grid, the grit chamber, and the sand-water separator are generally used to pretreat the sewage, so as to solve the scum, floating garbage and sand in the sewage, so that the treated sewage can enter the subsequent The biochemical treatment section continues to process. In terms of process requirements for sewage treatment, the functions of the three are indispensable, otherwise the post-stage process facilities will not be able to operate normally and effectively, especially when the underground water in coal mines is lifted to contain a large amount of coal slag and sand particles, and effective sand removal pretreatment equipment is urgently needed. However, these three equipments in the traditional pretreatment process have the following defici...

AI Technical Summary

Problems solved by technology

In terms of the process requirements of sewage treatment, the functions of the three are indispensable, otherwise the post-stage process facilities cannot operate normally and effectively, especially when the underground water of coal mines is lifted to contain a large amount of coal slag and sand particles, effective sand removal pretreatment equipment is urgently needed

However, these three equipments in the traditional pretreatment process have the following deficiencies: 1) The grid machine does not completely intercept the scum and floating garbage in the sewage, and it needs to be equipped with concrete ditches, and the life of the grid machine is limited Due to the characteristics of scum and garbage, the failure rate is relatively high; 2) For the swirl grit chamber, in addition to building a civil construction tank, it is also necessary to install mixing and sand lifting equipment. , the key is that its removal of sand particles is quite low, and if sand particles in the source water are not completely removed, it will have serious consequences for the subsequent facilities and equipment of the process; 3) The sand-water separator is a special equipment matched with the cyclone grit chamber. However, this equipment needs to reserve a separate site for its installation and operation, and at the same time, there must be corresponding pipelines connected to the cyclone settling tank, and it can only be operated with a Roots blower for sand extraction, and its occupied area is a huge waste. , pipeline connection and solenoid valve connection are relatively complicated, and the supporting energy consumption is high

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