High-frequency opening and closing soft-seal pneumatic needle valve
CN122345166APending Publication Date: 2026-07-07ANHUI TUNXI HIGH PRESSURE VALVE
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI TUNXI HIGH PRESSURE VALVE
- Filing Date
- 2026-05-29
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Existing needle valves have slow response speeds, high maintenance costs, and rapid wear of the sealing surface, making them difficult to meet the requirements of high-frequency switching and automated control.
Method used
It adopts a seatless design, uses reinforced fluoroplastic gaskets and a triple sealing combination structure (reverse sealing pair + packing + O-ring), combined with a variable outer diameter mechanism to ensure sealing performance and wear resistance, and achieves rapid response through pneumatic drive.
Benefits of technology
It achieves reliable sealing during high-frequency opening and closing, avoids media leakage, reduces maintenance costs, and supports automated control of PLC and DCS systems.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122345166A_ABST
Abstract
The application discloses a high-frequency opening and closing soft-sealed pneumatic needle valve and relates to the technical field of valves.The high-frequency opening and closing soft-sealed pneumatic needle valve comprises a valve body, connecting joints arranged on both sides of the valve body, a valve rod arranged in the valve body, a sealing gasket fixed on the valve rod through a locking screw, a filler gasket, filler, an O-shaped ring and an O-shaped seat arranged in the valve body from bottom to top in sequence, and a fixed sleeve for axially compressing and fixing the filler gasket, the filler, the O-shaped ring and the O-shaped ring gasket, and the valve body is connected and fixed with a cylinder fixing plate through a screw.The valve seat is not designed, the integrated or split structure of the traditional valve body and the valve seat is directly abandoned, and the problem that the valve seat cannot be repaired and needs to be scrapped as a whole after being worn out is fundamentally solved.The enhanced fluoroplastic sealing gasket is selected, and the sealing gasket has excellent sealing property and wear resistance and can effectively prevent medium leakage in high-frequency opening and closing.
Need to check novelty before this filing date? Find Prior Art