Knife type gate valve concept and structural characteristics
Knife type gate valve - also known as knife type gate valve, knife type slurry valve, entered China from the 1980s. In less than two decades, its use has expanded from the general field to a wider range of industries. Driving school three-way ball valve lined with fluorine valve from the mine power plant for coal preparation, drainage, slag discharge. It has developed into urban sewage treatment, from general industrial pipelines to specialized pipeline systems such as food, health and medicine. The ultra-thin knife-type gate valve completely solves the flow resistance of ordinary gate valves, slab gate valves, ball valves, globe valves, regulating valves, butterfly valves, etc. due to its small size, small flow resistance, light weight, easy installation and easy disassembly. Difficulties such as large size, heavy weight, difficult installation, and large floor space.
Knife type gate valve structure features:
After the emergence of the knife-type gate valve, a large number of general-purpose shut-off valves and regulating valves have been replaced. To date, the largest use of knife-type gate valves in the world is in the United States and Japan.
The knife-type gate valve can complete the action control and signal output of the two positions of the opening and closing by using the electromagnetic valve, the price of the dry cleaning machine and the proximity switch, etc., and can also complete the automatic control of the continuous action. Knife-type gate valves are widely used in chemical, coal, sugar, sewage, paper and other fields, and are an ideal sealing valve. The Stud-type gate valve is particularly suitable for conditioning and throttling on the pipeline in the paper industry.
The knife-type gate valve is mainly composed of left and right valve bodies, U-shaped seal rings, gate plates, steel nuts, valve stems, brackets, cylinders, etc. The valve opening and closing is completed by the cylinder action.
The structural features of the knife gate valve are mainly:
1. It adopts the clip-on structure, which is small in size and light in weight.
2. Fully open channels, medium frequency induction heating equipment prevents the deposition of media in the valve.
3. The newly developed U-shaped sealing ring can ensure the good sealing of the valve.
4. The outer seal of the ram is realized by a sealing strip embedded in the valve body. The stage machinery can be adjusted by means of screws and pressure plates.
5. The flow resistance is small.
6, easy to install and maintain.
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