A melt pump shaft seal structure
CN224689668UActive Publication Date: 2026-08-28ANJI HENANPLASTIC MASCH CO LTD
Patent Information
- Application Number
- CN202522094791.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-29
AI Technical Summary
Technical Problem
[0005]针对上述情况，为克服现有技术之缺陷，本实用新型提供了一种熔体泵泵轴密封结构，有效的解决了现有挤出机柱塞密封结构损耗过快的问题
Benefits of technology
[0010]本实用新型结构巧妙，通过挤压多个间隔分布的空心橡胶环，实现多层密封，当需要换网时松开空心橡胶环，使得空心橡胶环放松柱塞，最终实现柱塞轻松抽出，大大减少密封气囊的磨损。
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224689668U_ABST
Abstract
The utility model provides a kind of melt pump shaft sealing structure, effectively solve the problem that existing extruder plunger sealing structure is worn too fast;Its solution technical scheme is, including the main body and plunger of extruder, the blind hole of outside is provided in main body both ends, there is the sealing module in blind hole, there is the rotary drum in blind hole and is screwed, rotary drum is sleeved on plunger, and rotary drum can be inwardly extruded sealing module when screwing rotary drum;The sealing module is composed of multiple hollow rubber rings and annular partition, multiple hollow rubber rings are distributed with multiple partition interval;The utility model structure is ingenious, by extruding multiple interval distribution hollow rubber ring, realize multilayer sealing, when needing to change net, loosen hollow rubber ring, so that hollow rubber ring relaxes plunger, finally realize plunger to be easily pulled out, greatly reduce the wear and tear of sealing air bag.
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Citation Information
Patent Citations
Anti-leakage structure for plunger rod of filter of extruder
CN217123921U