1. The shape of the cyclone tube is usually long conical. Most of them are made of nylon, and some are also useful for other materials that are easy to work with wear resistant and water resistant materials. A swirl tube is made from the principle of fluid mechanics. When a slurry with certain pressure enters the swirling tube from the tangent line of the pulp inlet, starch in slurry and slurry will start to rotate swirling along the inner wall of the swirling tube. The speed of the motion of starch particles is greater than that of water and other light impurities. In the variable diameter swirling flow, the starch particles and a part of the water form a circular slurry column with a tapered inner wall moving in the direction of decreasing diameter.
In the vicinity of the central axis of the cyclone tube, a core shaped water column with the same rotation is produced, and its rotation speed is slightly lower than the outer ring size column. The light substance in the slurry (the proportion of less than 1) is concentrated in the center of the core water column.
Because the bottom orifice area is small, out of holes in the annular column slurry underflow, the reaction force generated by the role, in the middle of the core column, the core of water movement to the overflow hole, and out of the overflow hole.
Dejugate with a swirling tube with a slightly larger size. Full length 120~160 mm, an inner taper hole diameter of 12~20 mm, bottom hole diameter of 3~5 mm, the overflow hole diameter of 4~6 mm, slurry inlet flow per unit area per hour is 50 L / mm. The working pressure is not less than 0.4 MPa, and the best working pressure is 0.6MP. The size of the work pressure associated with the inner taper hole taper.
2. The single swirl pipe of the cyclone is not capable of working. In general, the working ability is less than 1000 liters / hours. Common specifications: (1) for small granules (small particles of Kudzu starch such as corn starch, refined from Kudzu starch production line in the size of particles) the ability to work for the 300 L / h 10 mm cyclone tube; (2) for removal of Kudzu starch juice, refined capacity of 500 liter the 15 mm / hour cyclone tube; (3) for the full cyclone process of slurry separation capacity of 1000 liter per hour 30 mm and a capacity of 750 liter per hour 25 mm in the cyclone tube.
In practical applications, many of the swirling pipes need to be combined together to work together. The cyclone is composed of many branches (from more than ten to more than 100), as well as the splints and shells.
3. The cyclone of the cyclone station and the pump supplying the slurry of the swirler constitute the first level swirl station. A number of swirling stations are scientifically woven together to finish the juice removal and subsequent refining work. Such a number of swirling stations are called multistage swirling stations. How many levels are called level swirl stations, such as the five stage depot, nine level refining swirl station and twelve level swirl station, etc.
The main purpose of the cyclone station is to separate the light impurities (including fine fibers, proteins and browning substances, etc.) with the starch granules. Specific performance: the total flow into the slurry underflow part with One divides into two., most starch and a part of the water (a green mix), the overflow part is most of the water (or juice blending) and a few starch (less than 1%, or even less). Because of this, the separation capacity of the single stage cyclone is not very high, which is generally 48%~60%. The specific situation varies with the form of connection. The form of interstage connecting in the cyclone station is divided into two kinds: pure series and countercurrent washing.
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