Introduction and advantages of knife gate valve
Knife gate valve is also known as knife gate valve, knife gate gate valve, slurry valve and mud valve. Its opening and closing part is a gate, and the movement direction of the gate is perpendicular to the direction of the fluid. It is cut off by a blade-shaped gate that can cut fiber materials. medium,
When the knife gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, relying on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves are With forced sealing, that is, when the valve is closed, the gate must be forced against the valve seat by external force to ensure the tightness of the sealing surface. Knife gate valve has small installation space, low working pressure, not easy to accumulate debris, and low price.
Knife gate valve drive mode: manual, sprocket, electric, pneumatic, hydraulic, bevel gear, electric control hydraulic and gas-hydraulic and other driving methods. Knife gate valve shape: open rod and dark rod. Knife gate valve material: cast iron, cast steel, carbon steel, stainless steel, fluorine-lined, etc.
Knife gate valve seal: hard seal, soft seal, single-sided seal, double-sided seal and other material seals.
The ultra-thin knife gate valve completely solves the large flow resistance of ordinary gate valves, flat gate valves, ball valves, globe valves, regulating valves, butterfly valves and other valves with its advantages of small size, small flow resistance, light weight, easy installation and easy disassembly , heavy weight, difficult installation, large floor space and other difficult problems. After the appearance of the knife gate valve, a large number of general-purpose shut-off valves and regulating valves have been replaced by them.
Knife gate valves are used in the following areas:
①Mining, coal washing, iron and steel industry – used for coal washing and washing pipelines, slag filtering and slurry pipelines, etc., ash discharge pipelines;
②Purification device – used for waste water, mud, dirt and clarified water with suspended solids;
③Paper industry – used for any concentration of pulp, material-water mixture;
④Power station ash removal – used for ash slurry