Two-way flow head seal and pneumatic valve valve industry _ pneumatic components factory

Two-way flow head seal and pneumatic pneumatic valve pneumatic valve overview: two-way flow head seal and pneumatic valve by the control part: valve shaft, valve body, floating valve seat, valve core, locating ring and end cover parts, its scientific name as half pneumatic eccentric structure of butterfly valve. Two-way flow head seal and pneumatic valve structural principles: (1) axis eccentric valve: the valve is in the center of rotation, departs from the center valve core to open valve when the valve core can quickly out of the seat, eliminating sealing surface friction, such as reasonable eccentric structure at the same time, the unbalanced force is small, the valve opening and closing. (2) the tangent seal: two-way flow head seal and pneumatic sealing face of the valve is the valve core to form three curved surface, the valve seat sealing surface of a conical surface. In sealing points, seating faces three surface is actually the valve core and valve seat tangent cone, and their combination in good condition, can closely truncation stream, automatically locate and center and the longer the wear compensation function. (3) floating seat: two-way flow head seal and pneumatic valve is more critical to adopt floating seat design, it makes the valve have two-way truncation function. Two-way flow head seal and pneumatic valve movement theory: two-way flow head seal and pneumatic valve USES the floating seat, when the positive pressure, medium pressure to push the valve core seat direction, deformation of valve core, valve core sealing surface close to the seat, sealing surface drive pressure, will be floating seat to body the steps to achieve forced sealing, the sealing principle is similar to ordinary valves; When reverse pressure, medium pressure valve core and valve rod elastic deformation, the backward movement, pressure action and floating seat at the same time, push the seat moving deformation compensation valve core displacement, and maintain the sealing surface sealing pressure ratio, save good seal effect, so the bidirectional flow head seal and pneumatic valve can not only in positive pressure sealing good, in a reverse pressure or reverse pressure is greater than the positive pressure can maintain the seal, used in pipeline system shows its strong superiority. : rotary pneumatic valve structure principle of two-way metal hard seal rotary pneumatic valve