In unloading the structure of the drying raw mill
Raw mill, the edge of the drive, the middle of the discharge,iron ore crusher with the drying chambers circulation grinding. Mainly used for dry grinding with water less than 8% in the hard limestone and clay raw materials.
1 at both ends of the mill body into the hopper, installed in front of where the diameter of 1m into the wind pipe, from grinding the ends of the drum into the hot air. Both ends of the mill body to rely on the hollow shaft supported on two main bearings. The two main bearing lubrication, pressure lubrication system and water cooling.
Rotating part shown in Figure 7.18. Grinding cylinder made of Q235 steel welded on two mill doors, grinding for the door and the cylinder with the thickness of the reinforcing plate riveted to strengthen. The cylinder body is divided into drying chambers I, coarse grinding positions II and finely ground positions III, coarse grinding position and finely ground position between the grate plate divided into the unloading position IV. The drying chambers, 1.5m, coarse grinding position length of 3.5m, fine grinding position length is 4.25m, the unloading position, 0.75m. Spreading devices are installed in the drying position has three paragraphs long each 0.5m lifting plate 4, the end of the third paragraph of the lifting plate mandatory discharge, fixed with M30 bolts. 15mm thick asbestos board to insulation pad lifting plate and cylinder. The kibbled positions equipped with ladder Liner six. Finely ground positions in the inlay puzzle small corrugated liner 7.
In order to adapt to the different nature and moisture content of materials,gold ore crusher to improve the thermal efficiency of the grinding efficiency of the mill, according to the actual need to adjust the length of the drying warehouse and coarse grinding position. Adjust the length of an integer multiple of 250mm.
Cylinder at both ends of welding Q235 steel flat end caps, bolts, respectively, and both ends of the hollow shaft flange connection. Cover at both ends with M30 bolts to connect the grinding head liner 9.
Discharge hole 10 opened in the discharge position cylinder. In order to ensure that the cylinder strength, 40mm thick, 2.4m long steel production. The remaining paragraphs of the plate thickness of 25mm. Discharge holes are material mask 19 (Figure 7.17). Seal. Cast material to the Department of connecting pipe dust collector, the lower part fitted with air lock devices (such as the flap valve), and then connected with the transportation equipment, otherwise it will affect the discharge of the mill.
Mill JRQ1512 ª² 8 570kW electric motor 7, after the MCD ª² 70 and the speed ratio of 6.3 reducer 9, the intermediate shaft 10 and pinion 13 driven by a fixed ring gear rotating cylinder to drive the mill tube rotary body 20.4r/min the speed. 8 connected with elastic pin coupling between the motor and reducer, speed reducer and the intermediate shaft with rigid coupling 11 associated intermediate shaft and rubber block coupling between the pinion 12 associated. The role of the intermediate shaft to the mill body and the power part of the separated two-bedroom, in order to avoid the high-temperature hot air to affect the normal working of the motor and reducer, and the motor room kept clean.
Mill work, the material by a confined feeding equipment through the feed funnel 2 fed into the feed screw tube (shown in Figure 7.17), together with the hot air into the mill, drying position I, the material was lifting plate enhance the leaching Caesar, dried and enter the drying chambers, hot air contact. After drying the material feeding device Yang forced feeding coarse grinding compartment. Grinding media in the coarse grinding compartment with cylinder rotary movement, crushed work
The newly installed mill or mill overhaul and re-start the mill,sand mining equipment the material must be preheated in the drying position to be dried to an appropriate level, and then into coarse grinding position. Stop grinding or maintenance, the replacement of the grinding media, etc., required to slow to turn the mill body, to prevent the mill body heat distortion, and cylinder stop in the desired position, so the set of auxiliary gear.
raw mill,cylinder,intermediate
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