Raymond Mill's working technology principle process comprehensive analysis

The natural ore can not be directly put into the raymond mill to directly grind the inside, but it needs the supporting equipment to carry out the simple processing of the ore. Raymond Mill's complete working system includes jaw crusher, blower, analysis machine (powder selector), pipeline installation, finished cyclone separator, bucket elevator, electromagnetic vibrating feeder, electronically controlled motor, etc. After the material is crushed by the jaw crusher to the required grain size, the material is sent to the storage hopper by the elevator, and then evenly quantified and continuously fed into the main grinding chamber for grinding by the vibrating feeder. The dust after the grinding is blown by the fan take away. After being classified by the analysis machine, the powder with the fineness enters the large cyclone collector along with the gas flow through the pipeline, and is separated and collected. The powder is then discharged through the powder tube as the finished powder. The air flow is sucked into the blower by the return air pipe at the upper end of the cyclone collector. The entire air flow system of the machine is closed and circulates under positive and negative pressure. Raymond Mill mainframe consists of a frame, grinding roller, grinding ring, blade, air inlet volute, cover and motor. Through its structure, we first look at how its main machine works: Raymonds mill main work process is through the transmission device to drive the central axis rotation, the upper end of the shaft is connected to the plum shelf, the rack is equipped with a roller device and forms a swing fulcrum, grinding roller While orbiting around the grinding ring, the roller itself rotates due to friction. The lower end of the plum shelf is equipped with a blade system, and the position is at the lower end of the grinding roller. During the process of the same rotation of the blade and the grinding roller, the material shovel is thrown into the gap between the grinding roller and the grinding ring to form a mat layer, and the material layer is affected by the grinding roller. Rotation produces outward centrifugal force (ie, extrusion force) to crush the material, thereby achieving the purpose of milling. In the grinding chamber, due to the moisture content of the material being grinded, the heat generated during grinding causes the gas in the mill chamber to evaporate and change the gas flow, and the pipes of the whole machine are not tightly connected so that the outside air is sucked in, so that the circulation air flow is increased, resulting in milling. Machine out of powder or even burst machine, in this regard, the new European version of the ladder mill has been set in the body with explosion-proof measures, you can maximize to avoid accidental damage caused by Raymond mill explosion, at the same time, The situation can also be achieved by adjusting the balance between the fan and the host to achieve airflow balance, and the excess gas into the small cyclone collector, the residual gas into the fine powder collected, and finally by the small cyclone collector upper section The exhaust pipe is discharged into the atmosphere or introduced into the dust collector to purify the exhaust gas. However, the technical requirements of the operator are relatively high, and they need to be discovered and adjusted in time. The analysis machine (powder selector) rotates 60 blades on the turntable through a speed-regulating motor and is driven by a secondary deceleration to form a graded effect on the powder. The speed of the blade is adjusted according to the size of the finished powder. In order to obtain finer particles, it is necessary to increase the rotational speed of the blades (at the same time, the wind speed of the fan must be taken into consideration) so that the contact between the blades and the powder increases, and the undesired powder is thrown off from the center air flow by the blades. The powder falls into the grinding chamber due to the effect of gravity and is regrinded. The qualified finished powder is sucked into the large cyclone collector by the air flow through the blade. After the powder collector is separated, the air flow and the powder are separated and the powder is collected.

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