Anti-blocking emptying device for aerated grit chamber

Abstract

The invention discloses an anti-blocking emptying device for an aerated grit chamber. The anti-blocking emptying device comprises the aerated grit chamber, wherein the bottom of the aerated grit chamber is connected with an emptying pipeline, an emptying valve is mounted on the emptying pipeline, a dredging pipeline is connected on the emptying pipeline between the aerated grit chamber and the emptying valve, a dredging valve is mounted on the dredging pipeline, and the dredging pipeline is connected with a high-pressure water source. The dredging valve is added in front of the emptying valve, and the dredging valve and the emptying valve are both closed when emptying is not required at ordinary times; when emptying is required, the dredging valve is opened first before the emptying valve is opened, water conveyed from the high-pressure water source is injected into the emptying pipeline, mud and sand blocking the emptying pipeline are washed away under the action of high-pressure water, and the purposes of smooth dredging and emptying are achieved; if the emptying pipeline is blocked severely, the emptying pipeline can be forced to be dredged through repeated washing by high-pressure water, the emptying valve is opened after the emptying pipeline is dredged, so that the aerated grit chamber can be emptied smoothly, and the anti-blocking device is easy to mount, convenient to operate and very practical.

Description

technical field [0001] The invention relates to the technical field of an aeration grit chamber, in particular to an anti-clogging and emptying device for an aeration grit chamber. Background technique [0002] The aeration grit chamber is a long channel, along the entire length of one side of the channel wall, an aeration device is installed at a distance of 60-90 cm from the bottom of the tank, and an emptying pipe is installed at the bottom of the tank. The slope to ensure that the sand slides in. Due to the aeration effect, the organic particles in the wastewater are often in a suspended state, and the sand particles rub against each other and bear the shear force of the aeration, and the organic pollutants attached to the sand particles can be removed, which is conducive to obtaining relatively pure sand particles. Under the action of the centrifugal force of the swirling flow, these denser sand particles are thrown to the bottom of the tank for accumulation, while the...

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Problems solved by technology

[0003] When the aerated grit chamber has been used for a period of time, it needs to be flushed and maintained, and the sand and water generated during flushing should be emptied by using the emptying pipe. Since there are more sands in the flushing water, the power is And the speed is limited, so a large amount of sand will be deposited in the emptying pipe, which will gradually block the emptying pipe in severe cases, thereby preventing the smooth progress of emptying, which increases the workload, reduces the emptying efficiency, and causes Too much waste of flushing water, so it is very inconvenient to use

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