expander

By adopting a modular screw design in the expander, the screw spindle and blade sleeve can be disassembled, which solves the problem of high cost caused by screw blade wear, and achieves a reduction in replacement cost and an improvement in maintenance efficiency.

CN224440337UActive Publication Date: 2026-07-03CHANGZHOU YIDE MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU YIDE MASCH CO LTD
Filing Date
2025-07-16
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

When the screw blades of existing expanders are severely worn, the entire unit needs to be replaced, resulting in high costs.

Method used

The screw adopts a modular design, and the screw spindle and blade sleeve are detachable. Only the worn blade sleeve needs to be replaced, which reduces the replacement cost.

Benefits of technology

The detachable design reduces the cost of replacing the screw and improves the economy and maintenance efficiency of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model belongs to the field of extrusion technology, specifically relating to an expander. The expander includes: a transmission box containing a hollow main shaft; a cylinder connected to the transmission box; a screw passing through the cylinder and comprising: a screw main shaft and several blade sleeves, one end of which is connected to the hollow main shaft, and each blade sleeve is fitted onto the screw main shaft; and a drive mechanism connected to the hollow main shaft, adapted to drive the hollow main shaft to rotate so that the screw rotates to feed material. This expander adopts a spliced ​​screw design, meaning the screw main shaft and blade sleeves are detachable. When the blades on the screw wear out, only the blade sleeve containing the worn blade needs to be replaced, without replacing the entire screw, greatly reducing costs.
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