Swell-shrink profile type pneumatic valve light gate 2)

flat brake pneumatic valve is a single or double plate with a pneumatic valve is a distraction. Pneumatic valve plate brake pressure, in the middle and lower, easy to leak. Total pressure pneumatic valve, to ensure ongoing good sealing, prestressing force should be given enough seats. Larger pre-tightening force, however, when the medium pressure is high, often open and close can lead to excessive sealing surface wear, affecting the service life of pneumatic valve. At the same time, usually cast iron or cast steel material pneumatic valve, it is very heavy, rather than a proper mobile applications. Therefore, the expansion and contraction type pneumatic valve, pneumatic valve plate brake design, in order to reduce the quality, improve the sealing performance and service life. The overall structure of the pneumatic valve adopts the plane of symmetry of the body as a whole structure, common brake pneumatic valve pneumatic valve body and valve cover, will be deemed to be a flat side ( Figure) Design, which reduce the size of the body volume and structure, save the connection between the body and a pneumatic valve cover bolts, effectively reduce the quality of the pneumatic valve. Seat has the independent design, ordinary pneumatic seat and pneumatic valve interface, combined with pneumatic valve seat, can switch to a pneumatic valve interface ( Figure) Change the different forms, effectively improve the pneumatic valve and general maintenance of the body, but also avoid the deputy high pressure pneumatic sealing of the valve body deformation caused by the problem is more serious. Sealing structure in order to improve the low pressure pneumatic valve sealing ability, in order to solve leakage, on the issue of low pressure pneumatic valve, at the same time reduce the friction between the door and pneumatic seat ring, increase the service life of the pneumatic valve, pneumatic valve seal design, expansion and contraction of the mechanical seal ball spending ( Figure) 。 When pneumatic valve is closed, two fitness overhead agencies distraction, airtight cover, the production of sealing pressure, forcing double-sided sealing effect. When the pneumatic valve is opened, the top of the head the ball the agent contract, the door to leave within the seal face, in the process of our open or closed, to reduce the friction between the door and pneumatic seat ring. Pneumatic valve opening indicator non-rising stem the opening of the magnetic needle of the pneumatic valve indicator by a pointer table outside the pneumatic brake valve installed magnet driven magnetic sensors according to pneumatic valve ( Figure) 。 In different under the condition of pneumatic valve opens the door and instructions to install the magnet has one meter distance and different direction of the magnetic induction intensity on the indicating instrument can produce different indicators and direction sensor, namely different pointer indicates a pneumatic valve to open. This site keywords: pneumatic ball valve pneumatic ball valve pneumatic pneumatic valve pneumatic pneumatic valve pneumatic butterfly valve pneumatic butterfly valve pneumatic actuator pneumatic actuators