Overhead valve type water decanter

Abstract

The invention discloses an overhead valve type water decanter which comprises an overhead valve assembly and a sliding rail assembly, and the sliding rail assembly is arranged in a water pool and extends in the depth direction of the water pool; the top valve assembly is connected with the buoy assembly; the buoy assembly is connected with the sliding rail assembly in a matched mode. And the lift pump assembly comprises a lift pump main body and a connecting hose which are connected with each other. According to the overhead valve type water decanter provided by the invention, water enters from the water surface by adopting the buoy and the overhead valve, the conditions that impurities are pumped and the bottom valve and the pipeline are blocked are effectively prevented, the overhead valve adopts a hollow ball as a sealing element, and the hollow ball floats at the top of the overhead valve and is tightly attached to the water inlet of the overhead valve, so that the situation that water cannot be pumped due to backflow of water in a hose is prevented. Meanwhile, sliding rails are adopted for fixing, the buoy device is effectively prevented from being stressed to swing in the pump operation process, the sliding rails are fixed to the lowest position of the pool, and the pool bottom is convenient to clean. And large-area popularization and application are worthy.

Description

technical field [0001] The invention relates to the technical field of sewage sludge treatment equipment, in particular to a top-valve decanter that feeds water from close to the water surface. Background technique [0002] The SBR process adopts batch reaction, and the water intake, reaction, sedimentation and drainage are completed in the same tank, without secondary sedimentation tank and sludge return equipment. The decanter is opened in the re-drainage stage and gradually descends to discharge the supernatant without reducing the concentration of activated sludge. The decanter is the main equipment in the SBR sewage treatment process. The current SBR sewage treatment process is widely used. It has the advantages of small footprint, low investment in plant construction, low operating cost, and small on-site management room. [0003] There are many types of decanters in the prior art, for example, buoyant decanters, rotary decanters and the like. However, the decanters ...

AI Technical Summary

Problems solved by technology

However, the decanters in the prior art rely on self-flowing water, so the water outlet is required to be lower than the liquid level in the pool, which is not suitable for sinking pools

[0004] In addition, there are many impurities in the collection tank and adjustment tank of the sewage treatment plant station. During the process of pumping water up, the lift pump is easy to pump out impurities, and the situation of blocking the bottom valve and pipelines occurs from time to time, and even the pump is blocked and burned.

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