Stainless steel ball classification and working principle of pneumatic valve

pneumatic ball valve is to rely on the working principle of pneumatic valve pneumatic valve love to make smooth rotation or occlusion. Pneumatic ball valve switch lightweight, small size, can make a large caliber, reliable sealing, simple structure, convenient maintenance, sealing surface and the spherical often in the closed state, not easily be medium erosion, has been widely used in various industries.
pneumatic ball valves and cocks pneumatic valve is belong to the same type of pneumatic valves, only its closure is a ball, the ball goes around the center line of the pneumatic valve body for a pneumatic valves to open and close.
pneumatic ball valve in the line is mainly used for cutting, distribution, and change the flow direction of medium. Pneumatic ball valve is widely used in recent years a new type of pneumatic valve.
stainless steel ball of the pneumatic valve advantages:
. Fluid resistance is small, its resistance coefficient with section of equal length.
. Simple structure, small volume, light weight.
. Close and reliable, the pneumatic ball valve sealing surface of materials widely used plastic, sealing good, also has been widely used in the vacuum system.
. Easy to operate, open and close quickly, from open to close as long as the rotating °, is advantageous for the remote control.
. Pneumatic valve has simple structure, convenient maintenance, the ball sealing ring are generally activities, remove the replacement is more convenient.
. In full open or full close, the sphere and the pneumatic valve seat sealing surface and the dielectric isolation, medium through, can not cause erosion of pneumatic valve sealing surface.
. Applicability is wide and size from small to several millimeters, big to a few meters, from high vacuum to high pressure can be applied. Pneumatic ball valve has been widely used in petroleum, chemical, power, papermaking, atomic energy, aviation, rockets and other departments, as well as People's Daily life.
stainless steel ball characteristics of pneumatic valve products
and pneumatic three-way ball valve adopts the integration of structure in the structure, surface pneumatic valve seat seal, flange connection, high reliability, the design has realized the lightweight
, the 3-way ball core points T and L, and long service life, the flow capacity is big, small resistance
, pneumatic ball valve by acting cent two kinds of single and double action type, the characteristic of single acting is once the power failure occurs, pneumatic ball valve will be in a state of control system requirements. Pneumatic ball valve position according to the channel can be divided into straight-through, three general formula and right Angle type. Two ball after pneumatic valve used for distribution of medium and change the flow of medium.
【 Pneumatic ball valve can be divided into the form of the structure 】 A pneumatic valve, floating ball, ball

pneumatic ball valve ball is floating, under the effect of medium pressure, the fitness ball produce certain displacement and compression at the outlet seal surface, guarantee the outlet seal. Floating ball ball pneumatic valve has simple structure, good sealing, but all spheres of work under medium load to export seal, therefore should consider to seal material can withstand sphere medium working load. In this structure, it is widely used in low pressure pneumatic ball valve.
2, pneumatic fixed ball ball valve
pneumatic ball valve ball is fixed, does not produce mobile after compression. Fixed ball pneumatic ball valve with floating pneumatic valve seat, after the medium pressure, mobile pneumatic valve seat, make the seal compression on the ball, to ensure the seal. Usually mounted on the upper and lower shaft with ball bearing, the operating torque is small, suitable for high pressure and large diameter of pneumatic valve. To reduce the number of pneumatic ball valve operating torque and increase the reliability of the sealing, pneumatic valve oil seal ball appeared again in recent years, both betting special lubricant between the sealing surface, in order to form a layer of oil film, which increases the sealing, and reduce operating torque, suitable for pneumatic ball valve with high pressure, large diameter.
3, elastic ball pneumatic ball valve
pneumatic ball valve ball is elastic. Sphere and pneumatic seat sealing adopts metal materials, sealing pressure is very big, relying on the pressure of the medium itself already could not reach the requirements of sealing, must exert external forces. This kind of pneumatic valves are suitable for high temperature and high pressure medium. Elastic ball is on the lower end of the sphere wall open one elastic slot, and elasticity. When close the channel, using pneumatic stem wedge-shaped head make the ball rolling out with pneumatic pressure to seating.
wedge head before you turn the sphere are released, the sphere then restore the original prototype, appear very small gap between the sphere and the pneumatic valve seat, can reduce the sealing surface friction and operating torque. Pneumatic three-way ball valve with T and L. T can make three orthogonal pipes unicom and cut off the third passage, shunt, rivers. L can only connect two orthogonal pipes, cannot maintain the third pipeline connected each other, only assigned role.