Pelleting machine maintenance and maintenance - pellet mill - the pharmaceutical industries

Pelleting machine maintenance and maintenance - pellet mill - the pharmaceutical industries

Granulator As the production of key equipment, its use and maintenance, maintenance is particularly important. Here's what Granulator use and maintenance, maintenance.

One that mixed the general work process

Silo - feed screw - Conditioner - granulating machine - cooler - finished warehouse.

2, granulating process for attention 1. Material in the granulation must go through a conditioning, steam pressure is to stabilize (4-8bar), and the steam before the transfer must be in addition to water quality, if the steam contains a lot of water, will cause granulation of the plug. Materials after conditioning, there have been a certain degree of maturation, can significantly improve the utilization of feed nutrients.

2. Granulation process, the materials should always check the humidity and temperature. Humidity way to check is: hand-Qing Nie, the material can be in the piece as well. Species because of granulation temperature to vary, to stabilize the control in 75? 95 between.

3. After pelleting the particles must not be excessive cooling or cooling is not enough, if cooled too quickly, make material particle surface cracking, cool enough, the temperature is too high, material will absorb moisture causing mold block. After cooling, the material should be consistent with the room temperature.

3, ring die and roller selection

1. Ring mold material is generally carbon steel, alloy steel or Stainless steel , According to materials corrosion and ring-mode intensity of work to select the ring mode of the material, on the corrosion of materials and a small ring mold hole generally use stainless steel ring mold. Roller material generally used in the carbon steel or alloy steel. Or concave type tooth can be used for Pass.

2. Ring die compression ratio. Ring mold ring mold compression ratio is the effective working length and die diameter ratio. Raw materials and products according to requirements formula to select the ring mode of the compression ratio. Low compression ratio can increase production, reduce energy consumption, reduce the ring die and roller wear. However, loose particles, of different lengths, feed powder rate; contrary particle solid, smooth and shiny appearance, chalking small, but high production costs. Users can choose according to their needs than the compression ring mold, animal pellet compression ring mold generally less than 10, the ring die pellet feed aquatic compression ratio more than 10.

Model for some small holes in the ring, ring mold to ensure the strength of the premise of ensuring a reasonable compression, increasing the thickness of the ring mold and decompression of more accurate holes.

4, the correct operation, maintenance pellet mill

1. Ring die and roller gap adjustment ring for the new model and adjust the roller gap, the ring mold and should be the highest roller slight contact roller to achieve "may transfer non-transfer" state. If adjustments in the work of state, may be appropriate ring mode and increasing the pressure roller, but certainly enough is enough. Ring die and roller gap is too large, pressure roller can not rotate, resulting in blocking machine. Ring die and roller gap is too small, will increase the ring die and roller wear, load up, a serious cause ring die and roller damage. Should promptly check the ring mold and roller gaps, at least check once every four working hours. When adjusting the various rollers, pay attention to the direction of each roller adjustment should be made relative to the pellet mill roller shaft torque and zero, so that pellet mill from the asymmetry of power.

2. Frequency of team maintenance Granulator each class should be done before the inspection, check the transmission components, instruments, Valve Doors, raises oil (Jg with lithium lubricants), and remove iron on iron filings.

3. Properly installed or replace the ring die and roller is a new model with the new general roll, roll the old model with the old, in order to ring die and roller profiling state close to the surface shape, ring die and roller of all similar local space . So that the entire force, and a ring mold material are very uniform, can improve production efficiency.

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