Nov.07.2024
Knife gate valve is a derivative of gate valve. This completely solves the problems of ordinary gate valves and other valves such as large flow resistance, space consumption, and easy slag accumulation issues. Therefore, a large number of general cut-off gates and regulating gate valves are replaced by knife gate valves. This article will comprehensively introduce its advantages, disadvantages and applications.
Advantage:
1. Hard seal knife gate valve is the preferred valve product for slurry, mud and pulp pipelines.
2. Simple structure, small size, lightweight, easy to install.
3. Low pressure drop: The streamlined design of knife gate valves minimizes pressure drop, allowing for efficient flow control and reduced energy consumption.
4. Good sealing performance: The knife gate valve has excellent sealing performance, mainly due to its metal or elastic material sealing gasket. These gaskets can effectively prevent media leakage and improve equipment operating efficiency.
Disadvantages:
1. It can only be used in low-pressure pipelines. Gate valves are a large category, divided into many models and structures, and are suitable for many working conditions.
2. Knife gate valves are mainly used in slurry pipelines, and can also be said to be special valves for slurry pipelines. They may be prone to clogging or build-up if the slurry contains solid particles. Regular maintenance and cleaning are required in such cases.
3. Impact sound and vibration when opening and closing: When the knife gate valve is opened and closed, it may produce a certain impact sound and vibration, which may have a certain impact on surrounding equipment and pipelines.
Applications of Knife Gate Valve:
1. Knife gate valve is suitable for gold ore powder, tailings, paper pulp, wood pulp, fiber, dust, chemical treatment sewage, sedimentation tank, ore, slag, coal slime, asphalt, silo outlet, fruit, grain, cement slurry, Slaughterhouse wastewater, etc.
2. The knife gate valve can be equipped with a hand wheel, manual zipper, spur gear transmission, bevel gear transmission, pneumatic and electric.
3. The interior of the knife gate valve can be made into V-shaped, triangular, or pentagonal channels. The V-shaped gate can be used as an adjustment control.
4. The connection forms include wafer type and flange lug type. The seals include a metal-to-metal hard seal, metal-to-polyurethane seal, and reinforced polytetrafluoroethylene soft seal.
In general, knife gate valves have wide application value in industrial fields. When choosing to use a knife gate valve, you need to weigh its advantages and disadvantages based on actual working conditions and needs to ensure normal operation and efficient use of the equipment.
