The elastic sealing gate valve is a fluid control device that uses elastic materials (such as rubber) to achieve valve sealing. Its core design compensates for machining or installation deviations through elastic deformation, thereby improving sealing reliability. The following is a detailed description of its key features and applications:
1. Structural features
Elastic sealing components: The valve disc or gate is designed with a whole package of high-quality rubber, combined with the vulcanization process to ensure the geometric accuracy and durability of the sealing surface.
Drive structure: It is usually equipped with a lifting rod or a trapezoidal thread transmission system to convert the rotary motion into a linear lifting of the gate to achieve full opening or closing of the flow channel.
Auxiliary optimization design: Some models add filter screens, torsion spring structures (for impurity precipitation prevention) or telescopic adjustment functions to adapt to complex working conditions.
2. Working principle
When the valve is closed, the elastic sealing material is compressed and deformed to fit the valve seat to form a two-way seal; when it is opened, the gate rises to the full-diameter position of the flow channel to reduce fluid resistance. In order to avoid locking problems caused by temperature changes, some high-end models will rotate counterclockwise half a circle to one circle after fully opening.
3. Main application scenarios
Municipal water supply: used to control water pressure and flow, prevent leakage and backflow, and ensure the stability of the pipeline network.
Chemical and energy: resistant to corrosive media and high-pressure environments, suitable for oil, natural gas pipelines and chemical raw material transportation.
Fire protection system: quickly respond to opening and closing needs to ensure the timeliness and adequacy of fire protection water supply.
Sewage treatment: anti-wear design effectively copes with impurity-containing fluids and reduces the risk of leakage.
4. Technical advantages
Compared with traditional gate valves, its sealing life is extended by more than 30%, its weight is reduced by 20%-30%, and its maintenance cost is significantly reduced.
