一种弹簧式紧急泄放人孔
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHIKE PETROCHEMICAL EQUIPMENT CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing spring-loaded emergency release manholes suffer from poor safety and reduced sealing performance during use, and the sealing gasket clamping force is not adjustable.
A spring-loaded emergency vent manhole comprising a rotating assembly and a limiting assembly was designed. The manhole achieves tilting positioning of the cover and pressing of the sealing gasket through a rotating threaded shank and a worm gear mechanism. Combined with a tension spring and a limiting structure, the manhole prevents accidental closure of the cover and adjusts the sealing performance.
It improves the safety and sealing of the manhole, prevents the cover from closing accidentally, and can adjust the clamping force when the sealing gasket wears, ensuring the safety and sealing effect inside the equipment.
Smart Images

Figure CN224512139U_ABST