防止阀板与阀杆摩擦的闸阀
By introducing a positioning threaded groove and a support cylinder structure into the gate valve, combined with a sliding rod and a sealing ring, the problems of complex sealing structure and wear clearance compensation in the gate valve are solved, thus achieving simplified installation and improved sealing stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG MEIDE MASCH CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-17
AI Technical Summary
The existing gate valve has a complex sealing structure, which is difficult to adjust and cannot compensate for wear gaps, resulting in poor sealing performance and insufficient stability in use.
The system uses a positioning threaded groove to install a threaded ring, which, together with a support cylinder, sliding rod, and sealing ring, presses against the valve plate from the side to achieve a combined seal. Wear gaps are compensated by sliding adjustment, simplifying the structure and reducing friction.
It simplifies installation, reduces friction, improves sealing stability and adaptability, ensures sealing performance, and avoids the impact of gaps after wear.
Smart Images
Figure CN224515992U_ABST
Abstract
Claims
1. A gate valve for preventing friction between the valve plate and the valve stem, comprising a valve body (1), wherein an mounting cylinder (11) is fixedly connected to the upper surface of the valve body (1), and the mounting cylinder (11) has a connecting groove (12) inside, characterized in that: A valve plate (13) is slidably installed inside the connecting groove (12). A guide notch (14) is provided at the lower end of one side surface of the valve plate (13). A positioning thread groove (15) is provided at one end of the valve body (1). A threaded ring (16) is installed inside the positioning thread groove (15). A support cylinder (17) is fixedly connected to both ends of one side surface of the threaded ring (16). A sliding rod (18) is slidably installed at one end of the support cylinder (17). A support ring (2) is fixedly connected to one end of the sliding rod (18). A sealing ring (21) is fixedly connected to the outer surface of the support ring (2). A sealing lip (22) is provided on the surface of the sealing ring (21). The sealing lip (22) is tightly connected to one side surface of the valve plate (13). A pressing spring (23) is fixedly connected to the other end of the sliding rod (18). The pressing spring (23) is located inside the support cylinder (17).
2. The friction reducing gate valve of claim 1, wherein: The threaded ring (16) has an adjustment hole (24) on its side, and the adjustment hole (24) is circumferentially distributed on the surface of the threaded ring (16).
3. The friction reducing gate valve of claim 1, wherein: Both ends of the valve body (1) are fixedly connected to flanges (25), and the surface of the flanges (25) is provided with fixing holes (26).
4. The friction reducing gate valve of claim 3, wherein: The flanges (25) are symmetrically distributed on both sides of the mounting cylinder (11).
5. The friction reducing gate valve as defined in claim 1, wherein: The upper end of the mounting cylinder (11) is fixedly installed with a cover plate (3), and the inside of the cover plate (3) is threaded with a valve stem (31).
6. The friction reducing gate valve of claim 5, wherein: The lower end of the valve stem (31) is fixedly connected to a rotating head (32), which is rotatably connected to the upper end of the valve plate (13).
7. The friction reducing gate valve as defined in claim 5, wherein: An adjusting block (33) is fixedly connected to the upper end of the valve stem (31), and the adjusting block (33) is rotatably connected to the upper end of the cover plate (3).