Rotary pneumatic valve valve industry structure theory _ pneumatic components factory

Pneumatic valve pneumatic rotary pneumatic valve overview: rotary pneumatic valve pneumatic components factory is combined with eccentric butterfly valve and fixed pneumatic valve valve industry and the advantages of the development of a high valve, the floating seat and soft combination double seal technology, have two-way bearing ability, excellent sealing performance, can be long-term stability to maintain two-way zero leakage, is really a two-way bearing capacity of large diameter valves; Rotary pneumatic valve by driving gear, shaft, disc, valve body, floating seat, locating ring and end cover parts, such as driving devices such as manual, electric and pneumatic form. Rotary pneumatic valve structural principles: (1) adopts double eccentric structure, not only deviate from the center of rotation of the disc valve and pipeline center, also departs from the center of the disc, open the valve, the valve sealing surface can quickly from the valve seat sealing surface, sharply reduce the friction sealing surface, at the same time torque, easy opening and closing of the valve. Pneumatic surface, (2) the sealing surface of the disc to seat sealing surface for the conical surface, this structure has the function of automatic centering and abrasion automatic compensation function, so the uniform sealing surface contact stress distribution, sealed performance is good, not only can greatly prolong the service life of sealing pair. (3) rotary pneumatic valve is more critical to adopt floating seat design, can seat sliding around in the hydraulic driven, thus can realize two-way under pressure. Spin compared with ordinary butterfly valve pneumatic valve: we will spin pneumatic valve compare with normal butterfly valve, ordinary float valve seat device, forced seal depend entirely on the stem, and the elastic deformation of soft sealing surface to achieve sealing, the valve under pressure from positive flow, rely on the prestressing force of driving gear and media on the thrust of the disc seal, and reverse flow pressure, medium pressure will push back deformation, disc and stem seal deputy pre-tightening force greatly reduced, and clapper sealing surfaces from the valve seat sealing surface, so appear a lot of leakage. Rotary pneumatic valve with floating seat, when positive flow pressure, the sealing principle is similar to normal butterfly valve, when the reverse pressure, medium pressure to push the disc and stem elastic deformation to back-end moving, medium pressure ACTS on the floating seat at the same time, push the seat following disc mobile, always keep sealing deputy has enough sealing pressure, good sealing effect, the higher the medium pressure sealing performance, the better, so the forward and reverse all have the same bearing capacity, effectively overcome the triple eccentric butterfly valve reverse pressure on the problem of insufficient capacity. Therefore rotary pneumatic valve can not only in the positive pressure seal is good, in a reverse pressure or reverse pressure is greater than the positive pressure, also can maintain a good seal, so spin pneumatic valve used for water pump outlet valve repair, pump valve and other medium flow direction and pressure between group frequently changing situations has significant advantages, can replace the large-diameter gate or pneumatic valve such as two-way pressure valve, price is very high, the larger the diameter, the more obvious advantages. : two-way flow head seal and pneumatic valve metal hard seal pneumatic valve