A washing and drying line for recycling PE agricultural film

By combining pretreatment and main treatment modules for cleaning, and incorporating the negative pressure and centrifugal force design of the dewatering device, the problem of difficult removal of moisture from agricultural plastic film is solved, achieving efficient dewatering and cleaning, and improving the quality and production efficiency of recycled plastics.

CN121246084BActive Publication Date: 2026-05-26HUBEI RUILI ENVIRONMENTAL PROTECTION EQUIP
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Patent Information

Application Number
CN202511537359.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-27
Publication Date
2026-05-26
Estimated Expiration
2045-10-27

AI Technical Summary

Technical Problem

Existing centrifugal dewatering machines are unable to effectively remove the moisture locked in agricultural film by its own winding structure, resulting in poor production quality in subsequent extrusion processes.

Method used

The pretreatment module performs coarse crushing and washing, while the main treatment module performs fine crushing and washing. Combined with the differential rotation of the drum and shaft in the dewatering device, the material is pushed by a combination of negative pressure and centrifugal force through spiral blades and soft blocks. The design of micropores and water guiding chambers achieves efficient extrusion and separation of water inside the agricultural film.

Benefits of technology

It improves the dehydration efficiency of agricultural film, reduces moisture content, ensures the cleanliness of recycled plastics and the production quality of subsequent extrusion processes, while reducing equipment blockage and material loss.

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Abstract

This application discloses a washing and drying line for recycling PE agricultural film, relating to the technical field of plastic recycling. It includes a pretreatment module, a main treatment module, and a dewatering device. The dewatering device includes a body with a rotating drum and a rotating shaft rotatably mounted on it. The rotating shaft is coaxially arranged inside the drum and has spiral blades for propelling the material. A drive mechanism on the body drives the drum and shaft to rotate at different speeds. The body has an inlet communicating with a separation chamber and a solid outlet communicating with the separation chamber. A water guiding chamber is provided inside the drum, and several micropores communicating with the water guiding chamber are provided on the inner wall of the drum. A drain pipe communicating with the water guiding chamber is provided on the body. A pump unit is located on the side of the drain pipe away from the water guiding chamber, capable of inflating, deflating, and pumping water. This application has the effect of reducing the moisture content of the material.
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