Pneumatic valve fluorine dense ceramic rotating disk

the disc pneumatic valve, pneumatic valve is also called rotating disk of the pneumatic valve with double pneumatic valve plate of two-way sealing structure. Pneumatic valve shaft torque under the action of the cylinder, driven in pneumatic pneumatic valve seating surfaces do plane rotary motion to realize the switch of a quick open shut type pneumatic valves. Designed specifically for with wear and erosion characteristics of the material, it can under the condition of the normal work of the continuous long-term.
common dish of pneumatic valve sealing pair is mainly or spraying wear-resistant cemented carbide surfacing metal matrix, and the erosion wear serious bad working conditions, often early can obtain very good use effect. But as time goes on, the switch is frequent, abrasion and cemented carbide was gradually, after the last can only rely on the metal substrate to seal, the wear rate has increased dramatically, the pneumatic valve seal failure, brought great to the masses of users.
with fluorine close company for this kind of situation, with full recognition of the new engineering structural ceramics, first put forward by using engineering structural ceramics as a dish of pneumatic valve sealing pair, the hardness is far higher than that of hard alloy and coating materials, prolongs the service life greatly that plate of pneumatic valve.
with fluorine pneumatic valve adopts structural ceramics as dense ceramic rotating disk sealing deputy ( Ram and pneumatic seat are wear-resisting structure ceramic) , scour resistance and wearability. At the same time, in view of the original disc pneumatic valve structure was improved, the unique large pneumatic valve cavity design, rotary disc sealing structure, during the process of opening and closing the rotating disc, opening and closing flexible, and a self-cleaning polishing function, pneumatic valve closing two-way sealing, suitable for dry ash and pulverized coal, slag slurry, granular materials, such as medium of conveying, often used in pneumatic conveying system for feeding, discharging and exhaust of balance, with no dust, no jamming and simple maintenance, long service life of a lot of advantage.
in the structure design, the dense ceramic rotating disk with fluorine pneumatic valve pneumatic valve plate seal face with spring fit closely with the pneumatic valve seat, spring pressure keeps the pneumatic valve plate tightly in the ceramic pneumatic seat, pneumatic valve and allow the ceramic plate on the sealing surface of the vertical displacement of the space, make the pneumatic valve parts caused by heat bilges cold shrink and deformation effectively compensated. Pneumatic valve core and ceramic pneumatic seat together, in any case, when the switch granules medium hard to persist between the sealing surface. In the process of ceramic plate of pneumatic valve opening and closing, pneumatic valve seat seal face ceramic pneumatic valve plate in the tangent direction of the friction, the difference between the pneumatic valve disc rotates in an opening and closing cycle. Thus for ceramic sealing surface produces a since the grinding, polishing cleaning effect, cut up by a pneumatic valve of solid medium, so as to achieve sealing surface protection, prolonging the service life of the pneumatic valve. Every time
the pneumatic valves open, the pneumatic valve cavity there is enough space to make the disc will be medium away, not stuck pneumatic valves. In addition, every time the pneumatic valve open to discharge the material, the pneumatic valve body for eccentric flow to produce eddy current, material which is formed by the eddy current will be cleaning the pneumatic valve inside the cavity itself. Ceramic disc unimpeded, pneumatic valve port of fluid pressure drop is small. Stuffing box USES the spring loaded mechanism, greatly reduced the possible leakage.
and ceramic rotating disk pneumatic valve switch quickly ( Only rotating °) , good sealing, strong erosion and abrasion resistance, heat resistance performance is good, good using effect, long service life.
there are fluorine dense ceramic rotating disk pneumatic valve has been widely used in coal chemical industry, silicon chemical, metallurgy, petrochemical and other industries of solid, gas solid, solid liquid conveying system, applicable medium mainly include: coal slurry, ash, silicon powder such as solid, gas-solid two phase, solid liquid two phase fluid, etc. The main indicators have reached or exceeded the level of similar foreign product. （ According to there is fluorine dense pneumatic valve company)