Cyclone
Vacuum Cleaner dust removal device is a class. Dust removal mechanism is to make the dust stream rotates, centrifugal force will aid the separation and capture dust particles from the air stream in the wall, then with gravity so that dust particles fall into the hopper. Each member of the cyclone has a certain size ratio, a ratio between each change, can affect the efficiency and pressure loss cyclone, wherein the diameter of the main factors precipitators, air inlet size, the diameter of the exhaust pipe . In use should pay attention, when it exceeds a certain threshold, favorable factors can also be converted to negative factors. In addition, some favorable factors for improving the collection efficiency, but it will increase the pressure loss, and thus the adjustment factors to be taken into account.
Cyclone by intake manifold, exhaust pipe, cylinder, cone and hopper components. Cyclone simple structure, easy to manufacture, installation and maintenance management, investment in equipment and operating costs are low, has been widely used to separate solid and liquid particles from a gas stream, or for separating solid particles from the liquid. Under normal operating conditions, the centrifugal force acting on the particles is from 5 to 2500 times gravity, so the cyclone efficiency is significantly higher than the gravitational settling chamber. Use this principle successfully developed the basis of a collection efficiency of more than ninety percent of the cyclone dust collector. In the mechanical precipitators, cyclone dust collector is the highest efficiencies of an. It is suitable for removing non-adhesive and non-fibrous dust, mostly used to remove particles above 5μm particle multi-cyclone dust collector means connected in parallel to 3μm also has 80 to 85% removal efficiency. Selected high temperature, abrasion and corrosion of special metal or ceramic material constructed cyclone, can operate at temperatures up to 1000 ℃, pressure up to 500 × 105Pa conditions. Consider cyclone pressure loss control range from the technical and economic aspects is generally 500 ~ 2000Pa. Therefore, it belongs to the efficiency filter, and can be used in high temperature flue gas purification, a dust collector is widely used, and more used in the boiler flue gas dust, dust and multi-stage pre-dust.
In accordance with the axial velocity of the flow area in front of the integral approach, together with a conventional cyclone is installed computing change after a stick of different types of traffic decline and fall at different sections in each case the percentage of the total processing traffic flow precipitator painted in, as indicating the average flow rate through the downstream area, namely traffic decline and in fact, come down to earth flow through the flow area of the size difference. As can be seen changes in height of each model and the short-circuit flow drops flow along the filter. Compared with conventional cyclone, short-circuit flow increases but a stick after installing a non-full-length H1 and H2 flow to reduce short-circuit a stick after installing full-length # 1 and # 4. Installation # 1 and 4 # after drop traffic flow variation along with the conventional cyclone is basically the same linear distribution, three lines parallel decline of nearly Division. But after installing H1 and H2, distribution is a line rather than a straight line, its inflection point is precisely position a stick section under which extends upward from the insert. It can also be seen that the non-full-length a stick so that it extends to decline over the flow cross-section of each section is increased, decreased flow is larger than conventional dust collector, but after contact with a stick, down flow decreased rapidly, to the cone the bottom body at or below conventional precipitator value.
Reducing short-circuit flow can improve collection efficiency, increased fall flow cross-section, but also make the residence time of growth in air dust precipitator for dust separation creates more opportunities. Thus, although the drag reduction of non-full-length a stick a stick as effective as full-length, but more conducive to improving collection efficiency cyclone. Conventional cyclone inlet section of the exhaust pipe near the core presence of up to 24% of the short-circuit flow, which would seriously affect the overall effect of dust. How to reduce this part of the short-circuit flow, it will be to improve the efficiency of a research direction. Non-full length drag lever drag reduction effect, although not as full-length a stick is good, but because it reduces the flow of conventional cyclone short circuit and so decrease the flow cross-section increases, the improvement of collection efficiency cyclone
Vacuum Cleaner, will be more practical significance.
