FG-Spiral ClassifierOperating Instruction Manual Henan Songshan Heavy Industry Co., Ltd. Henan Songshan Heavy Industry Co., Ltd 1 Ltd 2 .Contents 1. Operation and Maintenance 5. Stucture 2.. Techniqual parameter 4. Equipment structure diagram Henan Songshan Heavy Industry Co. Wearing parts 6. Operation principle 3. The shaft head on both sides of the supporting base is supported on the gear frame. and the transmission device is located on the upper part of the equipment. Axle journals are welded at each two ends of the hollow shaft. and the upper end is supported inside the lower support. There is a settlement region which is suitable for classifying rough grains. the motor via speed reduction device and the cylindrical gear drive the lead screw so that the axle can be lifted and do up-and-down motions. Beside. or to be made by welding from long steel plates which are rolled as annular shape.1. The low speed rotation of spiral makes effort to agitate the ore pulp. Vertical hollow shaft is installed inside the trough body. When the spiral is rotating. Structure The main structure of the high weir spiral classifier is the semicircle trough. The drain valve is closed at normal operation time. hence the spiral axis can do the motions of both rotation and up-and-down. Ltd 3 . into the next process stage. which is made up of steel plate and profile steel. The spiral axis is transmitted by the motions of motor. good condition of sealing device is required. Spiral classifier operation principle: The ore pulp after fine grinded is fed into the trough from the feed outlet located in the center of the settlement region. Normally the spiral classifier and the Henan Songshan Heavy Industry Co. and the ore pulp will only be discharged from the drain valve when emergency happens. the helical system mainly adopts double-threaded uniform pitch screw. The hollow shaft is made up of seamless steel tube generally. Slantwise installed lower end of the trough is the ore pulp classifying settlement region. so the overflow granularity of bigger than 100 mesh can be obtained. helical blades are fixed on the top.. and wearable liner is equipped on the edge of the blade (normally is made up of medium—manganese nodular cast iron). so the light-fine grains are suspended on the top. 2. The machine adopts packing labyrinth type and high pressure oil type. On the other hand. Due to the helical blade will be buried by sand setting when the machine stops. returned sand outlet is on the lower part of the upper trough body. and the heavy-rough particles sunk at bottom of the trough are sent to the upper part. it may causes difficult machine starting. therefore the sealing performance is improved. Due to the bearing support of the lower part is immersed in the ore pulp for long time. spiral lifting gear is equipped necessarily. and a support shelf which is compatible with the spiral lead angle is equipped on the vertical hollow shaft. and drain valve is on the bottom of the lower trough body. speed reduction device. the light-fine particles are floating by agitated ore pulp. and being discharged from the over flow edge. Oppositely the heavy-rough grains are sunk to the bottom of the trough. but is lower than spiral upper edge of the overflow end. and being discharged as return sand from discharge outlet. Operation principle The overflow position of the highweir spiral classifier is higher than bearing center of lower end of the spiral axis. Feed outlet is on the side wall of the central trough body. cylindrical gear and bevel gear. 0 Manually 2. c) The bearings of both speed reduction device and both sides of the spiral axis should be lubricated with oil grease each definite time of operation time. even more damages to the equipments in the future. when the operation is steady.5 FG24 2400 9210 3-. then lower the spiral axis slowly until proper position. Ltd 4 .5 750 5500 6-10 340-570 65 3.43 FG12 1200 6500 5-8 1170-870 155 5..8 20. the spiral axis must be lifted in order to prevent infiltration of ore pulp to the sealing parts.7 FG10 1000 6500 5-8 675-1080 110 5. The spiral axis should be lifted at first.5 FG20 2000 8400 4-6 3240-5400 400 11 2.7 FG15 1500 8400 4-6 1830-2740 235 7. helical blade Henan Songshan Heavy Industry Co. 5. and the rough sand will be sent back to the grinding machine and being grinded again. Wearing parts 1. wear strip 2. Operation and Maintenance a) The machine must be started with no-load.5 2. b) When the machine is in repairing.6 4650-7450 580 15 3. d) The machine needs to be shutdown immediately if any unusual noises have been found. 3. Techniqual parameter Type Spiral Trough Rotation speed diameter length (mm) (mm) (r/min) Capacity (t/d) Return sand Motor power (Kw) Overflow Transmission Lifting Weight (t) FG7.0 25. and eliminating faults to ensure smooth operation in the future.5 Manually 4.grinding machine compose of closed circuit.6 4.2 12.5 1.5 8. under-part support saddle 6.. elevating mechanism Henan Songshan Heavy Industry Co. Ltd 5 . trough 4 hood gear 7. Equipment structure diagram Chart 1 High weir single-spiral classifier 1. Spiral 5.6. feed outlet 3. Transmission Mechanism 2.