Compound sealing device of extract powder grinder
By using the airflow channel and labyrinth seal sleeve of the composite sealing device, the problems of wear of the pulverizer seals and product contamination are solved, powder blocking and temperature management are achieved, and the reliability and production efficiency of the pulverizer are improved.
CN224453680UActive Publication Date: 2026-07-03GUIZHOU BAILING GRP PARMACEUTIAL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU BAILING GRP PARMACEUTIAL CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
Traditional pulverizer sealing devices cannot effectively prevent the penetration of micron-sized extract powder, leading to accelerated wear of seals, product contamination, and frequent spindle seizure failures.
Method used
A composite sealing device is adopted, combining gas seal and mechanical seal. Multiple barriers are formed through airflow channels and labyrinth seal sleeves to block powder migration, and the temperature of the seal is reduced by airflow cooling.
Benefits of technology
Reduce the probability of spindle seizure failure, extend the life of seals, reduce equipment failures, ensure product quality, and reduce overall costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224453680U_ABST
Abstract
This utility model discloses a composite sealing device for an extract pulverizer, including a pulverizer housing and a main head fixed to the pulverizer housing. The device is characterized by: a main shaft passing through the main head, on which a sealing element is fitted; a movable cutter disc being provided at one end of the main shaft extending into the pulverizing chamber formed by the pulverizer housing; the sealing element consisting of a stationary sealing element fixed to the main head and a moving sealing element rotating synchronously with the main shaft; an air inlet being provided on the main head, and an airflow channel communicating with the air inlet being provided within the stationary sealing element. This reduces the probability of main shaft seizure, extends the service life of the sealing element, reduces equipment failure rate, improves production efficiency, prevents extract powder from entering the sealing area during pulverization and causing contamination of the medicine by deteriorated carbonized particles, ensures product quality, and has a low overall cost for modification and application.
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