The ball valve works by using the rotation of the valve core to allow or block the flow of the valve. The ball valve has a light switch, small size, can be made into a large diameter, reliable sealing, simple structure, easy maintenance, the sealing surface and the ball surface are often in the closed state, not easily eroded by the medium, and has been widely used in various industries. The ball valve and the plug valve belong to the same type of valve, only its closing element is a sphere, and the sphere rotates around the center line of the valve body to achieve opening and closing. The ball valve is mainly used in pipelines to cut, distribute, and change the flow direction of the medium. The ball valve is a widely used new type of valve.
The stainless ball valve is composed of valve body, ball, valve seat, valve stem, support, pneumatic driving device and other components. The sealing ring of the stainless ball valve adopts a combination of soft and hard laminated metal sheets for sealing, which has the double advantages of metal hard sealing and elastic sealing. The sealing band automatic compensation device for ash discharge special ball valve has very good sealing performance. What is the structural form of the stainless ball valve?
The stainless ball valve adopts a fixed ball (shaft-supported) structure
In order to reduce the operating torque of the ball valve and enhance the reliability of the sealing, avoid the displacement of the ball after pressure and ensure the ball valve to be flexible, accurately positioned, and unaffected by the pressure of the medium, this ball valve adopts a fixed ball structure. This structure maximizes the flexibility of the valve opening and closing, accurate positioning, and is not affected by the pressure of the medium.
The sealing form of the stainless ball valve
Adopts a combination of soft and hard laminated metal sheets for sealing, which has the double advantages of metal hard sealing and elastic sealing. The valve seat and the valve body are cylinder-type structure, which can ensure the integrity of the contact between the sealing surface and the ball surface to the maximum extent, thus ensuring the life of the sealing; the compensation device, under the condition of normal wear and tear, will compress the sealing valve seat as a whole onto the ball surface, compensating for the sealing clearance caused by wear and tear, and also extending the service life of the sealing surface.
The driving form of the stainless ball valve
The unique execution mechanism connected with a single-acting and double-acting pneumatic cylinder avoids the dead corner in the pushing movement, and the super large torque generated by the large-diameter cylinder ensures that the valve quickly opens and closes and accurately locates. Under the premise that the air source pressure meets 0.4Mpa~0.6Mpa, the valve can be opened and closed in 5-8 seconds, achieving flexible and rapid switching.
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