A self-adjusting screw stacker

Abstract

The invention relates to the technical field of energy saving and environmental protection, and discloses a self-adjusting screw stacker, which includes a cylinder body, a feed chamber fixedly installed on one side of the feed inlet, a fixed ring fixedly installed around the rotating shaft, and a movable sleeve The outside of the rotating shaft is located on the movable ring of the two fixed rings and the support feet fixedly installed on the lower surface of the cylinder. The side of the feeding chamber away from the cylinder is fixedly installed with a pneumatic device, and the pneumatic device penetrates into the interior of the feeding chamber. . The self-adjusting screw stacker is set to rotate pneumatically through the thickening shaft, and at the same time, according to the water content of the sludge, the area of ​​the side air outlet is blocked, so that when the water content is high, the airflow entering the thickening shaft becomes smaller, making the thickening shaft Slower rotation speed increases the flow rate of sludge in the thickening section, which in turn increases the dehydration time of the thickening section through its own gravity, making the water content of the sludge lower after entering the dewatering section, thereby improving the qualified rate of sludge dewatering.

Description

technical field [0001] The invention relates to the technical field of energy saving and environmental protection, in particular to a self-adjusting screw stacker. Background technique [0002] With the continuous increase of sludge output in urban sewage treatment plants, and few sewage treatment plants will treat sludge, it is very easy to cause secondary pollution to water and soil, so it is very necessary to treat sludge. Due to the poor fluidity of the sludge, it is very easy to cause the body to be blocked when using a general dehydrator to dehydrate the sludge, so the stacked screw dehydrator is widely welcomed. When the screw dehydrator is performing dehydration work, the sludge is first concentrated under the action of gravity when the screw drive shaft is pushed. After entering the dehydration process, it moves forward continuously with the rotation of the screw shaft. The pressure effect of the pressure and the pressure effect of the back pressure plate on the di...

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Problems solved by technology

[0003] First of all, because the water content of the sludge changes with the weather, when the water content of the sludge put into the feed port is high, the treatment time of the sludge with different water content in the thickening section is the same due to the constant rotation speed of the screw shaft. As a result, the dehydration effect is almost the same, and then the water content of the sludge entering the dehydration section in the thickening section is still high, which makes the qualified rate of sludge dehydration drop

[0004] Secondly, when dewatering the sludge with high water content, because the specific gravity of water is high at this time, the solid particle content is less. During the extrusion process, because the gap between the back pressure plate and the discharge port remains unchanged, the back pressure plate The pressure on the material becomes smaller, resulting in a poor final dehydration effect when the sludge is exported; at the same time, when dehydrating the sludge with a low water content, the amount of material discharged at the outlet gap is insufficient due to the high solid particle content at this time , so that more and more sludge inside the cylinder will eventually lead to equipment blockage

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