2. Particle size and critical theory of separation 
    (1) the critical size: Strictly speaking, most of the separation process has the connotation of classification.……Click here to regist or click here contact us.
    (2) balance of separation theory: analysis to determine the critical size classification of a variety of theories, in order to balance the separation of theory and practice in line compared with the theory that: ……Click here to regist or click here contact us.
    4. Cyclone impact on the performance factor
    (1) of imports of wind speed: With the grade is the size of imports and reduce the rate of increase, that is, high-efficiency dust. However, the pace of imports also not be too big, too easy to make the speed of airflow in the separator (particularly in its part of the cone) of turbulence intensity exercise increases, it will reduce the efficiency of separation. 
    ◎(2) D-diameter cylinder and exhaust pipe diameter dp: the smaller the diameter of the cyclone, dc50 also the smaller the particle size classification, the higher the efficiency of the precipitator. Therefore, the best cyclone a diameter of no more than 1m. If a larger air volume, two or more smaller diameter separator used in parallel. Reduce the exhaust pipe diameter, will help improve the efficiency of the dust. However, the exhaust pipe of diameter can not get too small, too large in order to avoid resistance. 
    (3) of the cyclone cylinder and the cone height: dust to increase the cylinder and a high cone, appears to be on the increase in the direct sense of the dust in the air inside the rotating ring, the dust in favor of separation. In fact due to an increase in the vortex of the next rotation of traction outside of the vortex, so that the air outside the vortex in the next rotation in the process of some of the dust Cuanjin continuous airflow inside the vortex, the cylinder and the cone had a high degree of Great little or no practical significance. Practice shows that in some of the cone, as the cross-section decreased continuously, reached the outer wall of dust gradually reduce the distance, and the flow of tangential velocity increasing, which is separated from the dust as well. Therefore, most modern and efficient dust collector is a long cone. 
    (4) of the lower part of the dust-tight: I expected more platoon tight, the lower the rate of leakage, dust, the better the effect, when the leakage rate of 5%, the separation efficiency by 90% to 50%; leakage rate 15% drop in efficiency have become more intense.  

    (5) the physical properties of materials: the separation of its effects is also greater. The greater size and density of materials, centrifugal force is greater, the higher the separation efficiency; otherwise, the lower the efficiency of separation. ◎
     5. Cyclone of several commonly used under-rotating centrifuge technology parameters table. Away from the upper part of spiral-shaped cylinder, gas-flow guide to a certain pitch down rotation to avoid the vortex ring and the gray generation. This separator import wind speed usually 10 ~ 17m / s, and the drag coefficient separator has little to do in diameter, often taking (ζ = 5.7. External rotation type centrifuge technology parameters table. Imports for the shell-and-vortex, Drag coefficient with a diameter of about separator. Rotation-type centrifuge technology parameters table. Cylinder with its import-lateral tangent, was not at the top of the spiral and a high degree of smaller size, structure is relatively simple, easy to manufacture, However, resistance to a greater separation (dust) and less efficient.

Under the spin-centrifuge (dust) 

External rotation-type centrifuge (dust)  

External rotation-type centrifuge (dust)  

Inertial-separator
    The use of campaign materials to the inertia of the particles flow in separated from the device into inertia separator, as shown. When the gas-flow through the pipe, the direction of air currents and sudden changes in speed, due to the inertia of material particles than the large inertia of the gas molecules to hundreds of thousands of times, and it is very kinetic energy of the material particles from the air will be separated , Set into the hopper, and the discharge port unloaded, dust and air flow through pipe while exports from the separator in the discharge. 
     In the separator-hopper, air pressure and is expected to lose control of the same pressure. In the smoke-delivery system, in order to reduce the outside air from leaking into the discharge port Department, must be installed on the lower part of its special valves or lock-valve atresia. 
     Another chart shows the inertial separator. Into the air along with the widening of the material is expected to take over, some of the lost speed, due to inertia and the role of settlement along the outer wall of room-shaped curve downward slide, and after discharge from the discharge hole (Gray) unloading device, smaller The materials from particles into the air to guide the settlement of the greater part of the room section, lost more speed in the grid-blinds to block the land down under. Dust and air through the exhaust emitted by the grill. Separator for the fine grade material can be used to fly free of fiber, wire, fabric, and so porous to replace the grille shutters.

Combined separator 
   Separator is a modular structure in the form of two different separator combination of the materials separation device. Its characteristics are due to the adoption of two-stage separation, separation more efficient, more compact structure, also the general role of both dust. Volume on the ground as shown in Figure centrifugal separator and a combination of the separation device. Gas-flow from the cut to take over the import into the cylinder, because there is a substantial rate of decrease, the vast majority of the material particles will be down to land by discharging unloading device. Lighter particles and dust from the inside rotation for the air entrainment up into the centrifugal separator, in its most isolated by the discharge unloading device. The dust concentration in the exhaust air flow through the introduction of the next level in the dust collector for further purification. 
     Map shows the volume-separator has built-in cone-settlement of the separation device. 
     The photo shows inertia - centrifugal separator. The vast majority of coarse particles from the isolated part of the inertia, and the smaller and most of the dust grains through part of the centrifugal separation. In addition, the centrifuges could Shunt is also part of a whirlwind two centrifugal separators. 
     Grain processing enterprises in the pneumatic conveying equipment, regular use of modular separator to the separation of grain and light impurities. Map shows the back wind-separator, the course of their work are: gas-flow into the separator before by a longer slow down the spread of pipe, and then to slow the pace of rise and cover the arc (wall James Emery) to less than 30 ° tangent of the angle of friction collision. In the arc-shaped duct, the wind speed remained at 10m / s or so, so that material can continue to move into the settlement movement and the room and fall into the hopper in the deposit. Back to the air duct flow. When the material in the hopper keep up to a certain weight, the pressure to open automatic doors. Grains fall particle cloud sentence drip board. In the on-board mobility, food grains and light impurities can be automatically graded and returned to the air drop together. At this point back from the duct to the air, since the bottom up through the grain and grain to the light impurities away. Set to the whereabouts of food grain hopper, the door pressure by the discharge. With a light impurities in the air, the duct upward arc into the settlement room, so that the light impurities and air separation. Air and dust from the air duct aspiration. Light impurities are set to the whereabouts of the hopper, and then discharged by the discharge device. This separator has a more reasonable population wind elections, and its own settlement with light impurities room, so will be able to better food grain, light impurities, dust and other materials were collected. The separation of light impurities in the efficiency of more than 80%. This separator is characterized by: the structure of the complex, more material consumption.