Screw extrusion dehydration device

Abstract

The invention relates to a spiral extrusion type dehydrating device. The dehydrating device comprises a tank in which a separation processing portion is arranged, wherein the separation processing portion comprises a filtering cylinder, and a spiral body arranged in the filtering cylinder; the spiral body comprises a spiral shaft body and a spiral blade arranged on the spiral shaft body; a spiral passageway is formed between the filtering cylinder and the spiral body; the spiral passageway between the inner wall of the filtering cylinder and the spiral body is diminished in a step pattern along the transmission travel direction; a resistance component for preventing solid matters from being discharged is arranged on the solid matter outlet. Because the volume of the processed object transmission passageway is changed from large to small in the step pattern, a solidified layer is formed on the outer surface of the processed object; the solidified layer is damaged and forms stirring along with the middle part of the processed object due to the stepladder change of the passageway volume, so that the middle part of the processed object can be well dehydrated.

Description

technical field [0001] The invention relates to a screw extruding dehydration device for separating a mixture of liquid and solid into liquid and solid. Background technique [0002] The method of separating solid-liquid mixture into liquid and solid is often used in food, paper, chemical, aquatic, brewing and other manufacturers, and it is also widely used in the field of waste treatment. Human and livestock excrement, domestic drainage, livestock sewage, etc. are also solid-liquid mixtures. No matter where these mixtures are placed, they will affect environmental sanitation. High-concentration livestock sewage organic matter contains a large amount of pollution load (such as nitrogen, phosphorus, etc.), and once it flows into rivers and seas, it will become the culprit of red tide, moss, etc. A large number of solid-liquid mixtures like this are produced every day. From the perspective of environmental protection, it is urgent for us to purify and treat these pollutants i...

AI Technical Summary

Problems solved by technology

In this compression method, its compression force first presses the surface part of the object to be treated (the outer surface part in contact with the filter cylinder, the inner surface part in contact with the spiral body shaft 7), and the outer surface part is first dehydrated and solidified. However, even if the inner surface is under pressure, there is no place for moisture to escape, so it cannot be cured

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