The principle of hemisphere pneumatic valve 2)

in the first place, the eccentric - structure Chocking principle of pneumatic valve and pneumatic rotary valve core center ( The pneumatic valve stem axis) And spherical pneumatic valve seal of the geometric center of radial size deviation, but also with electric control pneumatic valve seat sealing surface, with the size of the shaft on a channel deviation, sealing metal - Under the effect of external force, the pneumatic control valve metal contact, in order to realize the rely on two eccentric, eccentric locking self-locking closed make reasonable supporting horse is greater than the friction Angle decreases, self-locking Angle is too small to choose simple closed, open special difficulties, a lot of choice point of view, although the open force is small, but quickly shut down the increase of the torque, bench test, to determine two key is reasonable and reliable self-locking performance, to ensure that the seal eccentric. This is the core of a hemisphere technology, from the structure principle, by creating a means to achieve the best seal, pneumatic ball valve, butterfly pneumatic valve, pneumatic valve, brake by the pneumatic valve, there are less. Second, easy to achieve zero leakage and long-term pneumatic valve core and pneumatic seat sealing is the eccentric spherical line contact, realize self-locking, almost no contact with seal on the opening and closing the entire process, only at the start and end time, the gates will close contact static and dynamic zero leakage, to ensure no leakage seal. Pneumatic valve seat size or other deposits, in the process of contact with the pneumatic valve seat, with strong to remove scale. Pneumatic valve sealing surface, in the open and closed frequent moving back and forth, in the lower cavity a mixture of a moderate scale of rainfall, by the positive pressure pneumatic valve depend entirely on the seal, the seat size without cleaning, two packaging often repeated wear easily lead to brake pneumatic valve, globe object completely dynamic valve leakage. Pneumatic seat tightness is by ball squeezing for a long time, it must be worn at a faster rate than the hemisphere pneumatic valve, pneumatic valve adjustment is rubber for mediation, it is better than a hemisphere, pneumatic valve, pneumatic ball valve, pneumatic valve gate differ significantly higher metal hard seal performance. Hemisphere pneumatic valve use for a long time, the pneumatic seat also produces a small amount of wear and tear, it can be adjusted, to continue to use dry and stem cells in the process of opening and closing packaging simple rotating °, evidence for leaks, and then compress packing gland bolts, no leakage in the packaging can be implemented, and other control pneumatic valve is a small holes are still reluctant to use, large drainage valve replacement. (guangxi branch of China aluminum co. , LTD Working medium: red mud slurry, alkali solution) In the report, 'use. 。 。 。 。 。 Pneumatic control valve operation ( Open, close) Easy and convenient, easy to maintain, compared from exergue, longtime door, airtight performance,. 。 。 Is still in use, - have been working for almost three years Editor) Did not find any mechanical problems, from the intensity of labor, save energy and leak leakage are popular. 'Third, light hemisphere pneumatic valve opening and closing operation of the entire process, almost no damping seal in the idle state, the external force is just in the moment of the opening and closing ceremonies or compression, but dry spinning ° is small, fast, of course, easy to operate. Pneumatic ball valve in the opening and closing process is held under both sides of the seat of power, it is better than a hemisphere of pneumatic valve opening and closing torque, the greater the increase the opening and closing torque between the nominal diameter is obvious differences, the pneumatic valves open and close, is to overcome the deformation of the rubber, greater torque. As of the pneumatic valve, pneumatic valve gate operating time is long, difficult. Four, long service life of double seal metal, in the welding of alloy different USES of the mother, by special heat treatment, its physical and chemical indexes of mechanical properties and the best condition, in order to meet ( Strong abrasion, rapid erosion, corrosion and different conditions of serious media) Slightly higher than the pneumatic seat need specification, different materials, different heat treatment process, the hardness up to HRC necessary above, resistant to ℃ under the high temperature hardness. Practice has proved that its ability to resist corrosion and anti-seizure is stainless steel sealing, pneumatic valve opening and closing thousands of trouble-free, prolong the service life. Wisco in the report the use of iron and steel company, said: 'in the hands of your company, electric, pneumatic ball valve semi-bituminous coal purchase the first stage of the injection, scaling phenomenon will appear in the process of using, switch is quick, good sealing performance, this equipment is introduced and a half and good line of the ball head, and all kinds of pneumatic valve regulating price equal to the difference between the price of similar foreign equipment %, save investment projects, wuhan iron and steel soot blowing. 。 。 。 。 。 Good usage for nearly three years, cost savings, reduce equipment failure, reduce the labor intensity of iron works, leadership and management. 'The ball more than five widely the application scope of non-ferrous metal smelting, coal gas, natural gas steel and coal powder injection, power transmission and slag, harmful gases, Hydrogen sulfide, phosgene, etc. ) And oil ( Heavy fuel oil, crude oil widely used series of varieties, residual oil, etc. ) Smelting and transport. It's application scope is widespread, mainly because of different seal welding alloy, respectively make bimetal, pneumatic valve, pneumatic valve stem and other major components of necessary materials, to meet different conditions and the pneumatic valve products make up the air conditioning company site keywords: pneumatic ball valve pneumatic ball valve pneumatic pneumatic valve pneumatic pneumatic valve