An overview of the flue and structure characteristics of the butterfly 2)

in nickel smelting flue gas system and support the network chemical products, flue gas pneumatic valve is mainly used for adjusting from fire smelting gas ( Flash furnaceanalyze, if any, converter, copper furnace, basic oxygen furnace or boiler production of dry gas. ） Concentrate drying system, the material is one of the main causes of the melting process preparation, the process is mineral water from % to the wet concentrate %, and pulverized coal combustion hot gas mixture through the 'three stages' of the dry air moisture % or less dry concentrate. Acid device including purification, transformation, dry vacuum acid base unit. Smelting and acidic gas flue gas temperature is high, and with the pneumatic valve is larger dust and slow down the corrosion of the pipes of the catalyst. Smelting and flue pipe pneumatic valve acid should be used according to its structure design, working conditions, in order to avoid thermal deformation such as flue dust jam normally open and close the pneumatic valve pneumatic valves and pipe wall adhesion can affect the normal operation of smelting chemical equipment.
the flue structure characteristics of butterfly
from the analysis of the standard and cut or flue butterfly conditioned medium, sealing performance requirements and the metal sealing butterfly pneumatic valve of the actual use is different. Natural gas pipeline network dust control equipment in the closed position, will not affect the gap, still leaves some adjusted the furnace pressure automatic control operation. Flue gas valve and fluid properties are similar to the metal hard seal disc pneumatic valve, butterfly pneumatic valve open the ratio between the nature and relationship between flow linear relationship. If is used to control the flow, flow characteristics and flow resistance coefficient matching is closely related to the pipeline. If the pneumatic valve is installed two pipe diameter and form is the same, but different loss coefficient of the pipe, pneumatic valve, flow will be different difference is very big. If in significantly reducing the state of the pneumatic valve, throttle disc in opening to the outside world, in the process of closing, the butterfly can be in the composition of the board of directors, flanked by two completely under the front of the CD media stream flow direction along the different countries is on the other side of the movement. As a result, the body and disc such as the nozzle form open one side, on the other side of the hole shape similar to open, the flow speed is far more than more, nozzle cutting edge cutting edge profile to tend to produce negative pressure, the standards of smoke control of pneumatic valves pipe should be deposit on the under side of the nozzle, avoid dirt jam phenomenon of pneumatic valve connecting pipe.
from the flue gas valve closed and regulating flow, especially large diameter butterfly pneumatic valve, pneumatic valve working conditions affect many factors of deformation and deformation is hard to control, so the structure design should consider the environmental factors. Flue gas pneumatic valve seal and metal sealing butterfly valve with radial structure similar to application process temperature, heat resistance, open and close the pneumatic valve.
the ideal form of flue-cured tobacco plane sealing butterfly pneumatic valve, can design a vertical board or inclined plate structure ( Pictured above) , pneumatic valve, butterfly plate sealing surface for the edge. Disc diameter is less than the diameter of the body, even if the pneumatic valve cavity wall can easily be bonded. The main performance of the pipeline sealing seal pneumatic valve radial deformation is not obvious. Pneumatic valve sealing surface of the surface structure requires high degree of symmetry, in particular, its body diagonal seal structure, the general mechanical equipment is difficult to machining, lateral plate and plane, you must be a fair process makes the sealing assembly, the accuracy of the desired results. If you use a plane sealing structure of leverage, either vertical or inclined plate plate sealing structure can issue is resolved in the process. This structure has many advantages, in a sealed on the flat seals of pneumatic valve lever structure, won't produce radiation interference. In addition, the pneumatic valve body and disc sealing as a continuous process, the pneumatic valve disc diameter than the diameter of the plane design, the whole side of the aircraft. Closed after the first unit face more pressure of dynamic process of sealing disc closer, after opening of the first set of rotation in the process of translation, also won't produce interference. Flue gas valve is generally low voltage, high and low temperature conditions, will not affect the pneumatic valve opening and closing.
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