Inward-flow grille for sewage treatment, method of use thereof, and sewage treatment equipment

Abstract

The invention relates to an internal flow grille for sewage treatment, a use method and sewage treatment equipment thereof. The internal flow grille for sewage treatment includes a non-metal pore plate and filter holes arranged on the non-metal pore plate. The non-metal pore plate includes a first installation part, a second installation part and a connecting plate part connecting the first installation part and the second installation part. Both the first installation part and the second installation part include at least one installation shaft sleeve, and the filter holes are evenly disposed on the non-metal pore plate. The first installation part and / or the second installation part are / is equipped with rake teeth for filtering cobblestone and gravel impurities and in a preset included angle with the non-metal pore plate. The internal flow grille for sewage treatment has the advantages of simple structure, reasonable design, high degree of automation, convenient operation and use, effective reduction of the overall quality of the structure, convenient processing technology, and excellent filtering effect and flushing effect, can meet the pretreatment requirements of current sewage treatment, at the same time has relatively wide application space, and can be accepted by vast sewage treatment plants.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an inflow grill for sewage treatment, a method for using the same, and sewage treatment equipment. Background technique [0002] In the sewage treatment process, the fine particle impurities in the sewage need to be filtered by means of a grid with a perforated plate. However, the grid with a perforated plate in the prior art often uses stainless steel 304 or 316L plates, that is Metal orifice plates are used. In terms of processing technology, they mostly use punching processing technology, which has a great impact on the surface quality of the steel plate, causing protrusions and burrs to easily form around the holes on one side of the plate surface; in terms of the parameters of the orifice plate, the hole diameter 3mm orifice plate as an example, the thickness of the metal orifice plate is generally ≤2mm; in terms of filtration effect, due to the small thickness of t...

AI Technical Summary

Problems solved by technology

[0002] In the sewage treatment process, the fine particle impurities in the sewage need to be filtered by means of a grid with a perforated plate. However, the grid with a perforated plate in the prior art often uses stainless steel 304 or 316L plates, that is Metal orifice plates are used. In terms of processing technology, they mostly use punching processing technology, which has a great impact on the surface quality of the steel plate, causing protrusions and burrs to easily form around the holes on one side of the plate surface; in terms of the parameters of the orifice plate, the hole diameter 3mm orifice plate as an example, the thickness of the metal orifice plate is generally ≤2mm; in terms of filtration effect, due to the small thickness of the plate, impurities can easily pass through the holes during filtration, and the interception effect is poor. If the metal orifice plate stops the fibrous Impurities, because of the thinness of the plate, fibrous impurities are easily entangled between the holes and difficult to clean; in terms of flushing effect, the metal orifice plate is entangled between the holes due to the fibrous impurities, and is surrounded by the holes. The burrs are caught, and it is not easy to clean with high-pressure (100bar) flushing water. Over time, more and more impurities are entangled on the orifice plate, making cleaning more difficult

Therefore, no matter from aspects such as material selection, processing technology, filtering effect and flushing effect, the shortcoming of the metal orifice plate of prior art becomes obvious day by day.

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