What is a pneumatic ball valve? The working principle of various pneumatic valve ball?

pneumatic ball valve can be divided into the form of the structure:
a, forged steel fixed pneumatic 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.
in order to reduce the 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.
2, 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 ball valve position according to the channel can be divided into straight-through, three general formula and right Angle type. T four seals pneumatic ball valves for distribution medium and change the flow of medium.
3
, hard seal ball float pneumatic valve 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.
the 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. Pneumatic ball valve widely used in irrigation system, mainly used in the pipe inlet. Pneumatic ball valve has simple structure, small size, the flow resistance is small, the drawback is turned on or off too fast, middle water hammer in pipe ( The pipe flow speed suddenly change when the pressure rises) 。 So on ZhuGanGuan unfavorable use pneumatic ball valve, can be used in or dry, branch pipe on its end for wash, wash effect is good.
pneumatic ball valve with O type pneumatic ball valve and pneumatic valve v-shaped ball points. O type pneumatic ball valve structure of floating type, ball core for precision castings, looks hard chromium plating processing, pneumatic valve seat adopts reinforced ptfe material, flow crossing the same as the pipe diameter, flow capacity, small flow resistance, closing without leakage, generally do switch used pneumatic valve, especially suitable for high viscosity, fiber, granular media; V-shaped ball stationary structure is used in pneumatic valve core on a v-shaped incision, which can realize proportional control, flow characteristic is approximate equal percentage.
according to the process equipment is different, can form high pressure pneumatic valve internal thread ball and forging steel plate hard seal ball pneumatic valve, such as pneumatic high-pressure internal thread ball valve regulated to achieve proportional control with pneumatic valve positioner, forged steel three panel hard seal ball pneumatic valve, such as to be regulated to achieve proportional election electronic actuators or servo amplifier, etc.
external thread pneumatic ball valve butt pneumatic ball valve is used with a round ball channel as open-close, sphere with the pneumatic valve rod rotation to realize opening and closing action of pneumatic valve. External thread pneumatic ball valve butt pneumatic ball valve opening and closing is a perforated sphere, perpendicular to the axis of rotation of the channel, so as to achieve the aim of opening and closing the channel. Pneumatic ball valve is mainly be used for opening and closing medium pipeline and equipment. （ Can reduce the resistance of open and closed pipeline, prolonged use. ）
O type pneumatic ball valve and fixed structure more
ball core adopts pneumatic forging more
ball valve:
pneumatic ball valve is made up of cock, evolved from its opening and closing as a sphere, using a sphere around the axis of the pneumatic valve rod rotating ° to achieve the purpose of opening and closing. Pneumatic ball valve in the line is mainly used for cutting, distribution, and change the flow direction of medium, designed to open V of the pneumatic ball valve also has a good flow regulating function. Pneumatic ball valve not only simple structure, good sealing performance, and within a certain range of nominal pass after small volume, light weight, less material consumption, installation size is small, and the drive torque is small, easy to operate, easy to realize the rapid opening and closing, pneumatic ball valve is one of the fastest growing pneumatic valves varieties in last decade. Especially in America, Germany, France, Italy, and west, Britain and other developed countries, pneumatic ball valve has a very wide range of USES, use of variety and quantity continues to expand, and to high temperature and high pressure, big, high sealing, long life, good regulation performance, and a pneumatic valve multifunctional direction, its reliability and other performance indicators have reached a higher level, and has set up a brake part, pneumatic valve, globe pneumatic valve, pneumatic valve throttle. The technological progress as the pneumatic ball valve, in the foreseeable within short time see, especially on oil and gas pipeline, oil cracking device, and the nuclear industry will have a wider range of application. In addition, in other industries in large and medium caliber, low and medium pressure field, pneumatic ball valve will also become one of the leading pneumatic valve type.

pneumatic ball valve manufacturers recommendation: yongjia Bethlehem pneumatic valve co. , LTD always fine a nuclear control pneumatic valve co. , LTD