一种用于软密封闸阀的阀杆
By designing a valve stem with limiting and connecting structures, the problem of easy damage to the valve stem of soft-seal gate valves, requiring disassembly and maintenance, was solved. This allows for valve stem replacement without disconnecting the pipeline, simplifying the maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO YILIDA XIYI MASCH CO LTD
- Filing Date
- 2023-11-24
- Publication Date
- 2026-07-17
AI Technical Summary
The stem of existing soft-seal gate valves is prone to damage after repeated up-and-down movements. Repairing them requires disconnecting the pipeline and disassembling the entire gate valve, which is a complicated process.
A valve stem including a limiting structure and a connecting structure is designed. The screw is driven to rise by rotating the turntable. The screw is separated from the valve plate by the limiting block and the gear mechanism, which allows the valve stem to be replaced without disconnecting the pipeline.
It enables convenient replacement of valve stems, simplifies the maintenance process, avoids the need to disconnect and disassemble pipelines, and improves maintenance efficiency.
Smart Images
Figure CN224515983U_ABST
Abstract
Claims
1. A stem for a soft-seal gate valve comprising a communication tube (1), characterized in that: The connecting pipe (1) is provided with a limiting structure (2) inside, a connecting structure (3) is provided at the top of the connecting pipe (1), and a flange (4) is fixedly installed on the outside of the connecting pipe (1). The limiting structure (2) includes a card holder (201), a valve plate (202), a screw (203), a limiting block (204), a lead screw (205), and a threaded cylinder (206). The card holder (201) is fixedly installed inside the connecting pipe (1). The valve plate (202) is movably installed inside the connecting pipe (1). The screw (203) is threadedly connected inside the valve plate (202). The limiting block (204) is fixedly installed on the top of the valve plate (202). The lead screw (205) is movably connected inside the connecting pipe (1). The threaded cylinder (206) is threadedly connected to the outside of the lead screw (205). The connecting structure (3) includes a fixed rod (301), a bearing sleeve (302), a fixed block (303), a rotating rod (304), a gear (305), a toothed plate (306), and a turntable (307). The fixed rod (301) is fixedly installed on the top of the screw (203). The bearing sleeve (302) is sleeved on the outside of the fixed rod (301). The fixed block (303) is fixedly installed on the top of the connecting pipe (1). The rotating rod (304) is movably installed inside the fixed block (303). The gear (305) is fixedly installed on the outside of the rotating rod (304). The toothed plate (306) is movably installed inside the fixed block (303). The turntable (307) is fixedly installed on the top of the fixed rod (301).
2. A stem for a soft-seal gate valve according to claim 1, wherein: The valve plate (202) has a threaded groove inside, and the screw (203) is threadedly connected to the valve plate (202) through the threaded groove.
3. A stem for a soft-seal gate valve according to claim 1, wherein: A slider is fixedly installed on the outside of the valve plate (202), and a sliding groove is opened inside the connecting pipe (1). The slider and the sliding groove are slidably connected.
4. A stem for a soft-seal gate valve according to claim 1, wherein: The threaded cylinder (206) passes through the connecting pipe (1) and is engaged with the limiting block (204), and the bearing sleeve (302) is located inside the fixing block (303).
5. A stem for a soft-seal gate valve according to claim 1, wherein: The top and bottom of the fixing block (303) are provided with through holes, and the two through holes are of different sizes.
6. A stem for a soft-seal gate valve according to claim 1, wherein: The toothed plate (306) passes through the bearing sleeve (302) and is engaged with the bearing sleeve (302). The lead screw (205) passes through the connecting pipe (1) on the side away from the threaded cylinder (206) and extends to the outside of the connecting pipe (1).