Introduction to pneumatic knife gate valves made in China
swing type check valve, also known as knife type gate valve, slurry valve.It is the opening and closing of a ram, the ram of the motion direction and perpendicular to the direction of flow on the blade shape ram can cut fiber cutting medium, sealing face has two gate, two of the most commonly used mode gate valve sealing surface form a wedge, the wedge Angle vary with the valve parameters, usually for 5 °, wedge type knife gate valve disc can be made into a whole, is called a rigid disc; Also can be made to produce a small amount of deformation of the gate, in order to improve its technology, to make up for the sealing surface Angle in the processing of the deviation, such a gate is called the elastic gate. In fact, there is no chamber in the valve body, the gate is raised or lowered in the side guide groove, and the bottom lug is pressed tightly on the valve seat. If the sealing performance of the medium is higher, the o-shape sealing valve seat can be selected to achieve two-way sealing. Knife gate valve has small installation space, low working pressure, not easy to accumulate sundries, low price.
Cast steel pneumatic knife gate valves have a number of performance advantages:
1. The valve control can be used for local and remote control, as well as remote position display and remote centralized control according to the requirements of users.
2. Light weight: the body is made of carbon steel, and the weight is about 20%-30% less than the weight of traditional gate valve, which is convenient for installation and maintenance.
3. The use of the valve can improve the sealing performance of the conveying pipeline system, minimize leakage, improve production efficiency, and play a positive role in promoting environmental protection.
4. The sealing surface is made of ceramic materials with high abrasion resistance and corrosion resistance. Inlay technology is adopted to achieve high corrosion resistance and good wear resistance, so that the valve life is long and the cost performance is 10 times higher than that of ordinary valves.
Stainless steel pneumatic Knife gate valve enter China from the eightys, in less than twenty years, its use range from ordinary field extends to wider all walks of life, from mining coal in power plants, slag discharge, discharging the gangue, the development of the urban sewage treatment, from the general industrial pipes to food, health, medicine and other professional pipeline system.
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