Notes

How to make use of and also preserve timber pellet machine correctly?<br>
Grinding prior to making use of

Many roller and also flat dies in pellet machine are refined by high-heat treatment. After planing, exploration, milling, and quenching process, there are usually lots of dustcloths inside the die holes, which may influence the pelletizing impacts and manufacturing. As a result, before starting a brand-new pellet machine, or after changing a brand-new die, you require to grind it thoroughly.



We make use of oil combination to process grind the roller and also level die. The oil mix is made up of 20% great sand, 65% biomass products( like sawdust), 15% waste engine oil. Before feeding the oil mix to the pellet machine, you need to readjust the clearance in between roller and also level die to 0.1-0.3 mm. The grinding procedure should last 15-40 min.




For ring die pellet mill, the grinding process needs more oil mix as well as longer time. The amount of oil mixture is 10% that of pellet manufacturing per hr. The grinding time is 30-50 minutes. And the clearance between ring die as well as the roller is 0.1-0.4 mm.



Pretreatment of raw materials

The appropriate wetness web content of biomass products ought to in between 14% as well as 20%. Dry products are upsetting shape, damp materials will certainly make the pellets loose. The dimension of the raw materials ought to be less than the hole size of pellet mill dies. Usually, the hole size of the pellet mill die is 6mm and also 8mm, as well as the dimension of resources need to be under 5mm, or they may obstruct the holes as well as lower pellet manufacturing.



The adhesive force figures out the creating rate of the pellets Most biomass products include lignin, which would melt under heat and also act as binder. Yet some materials like rice husk has reduced glue force. It need to be combined with sawdust or binders to make pellets



The density as well as length of the wood pellets.

The thickness of wood pellets is established by the opening size of the die. The length is determined by the slicer. In level die pellet machine, the slicer is set up under the flat die, while in ring die pellet machine, the slicer is installed outside the ring die. Both of them can be gotten used to achieve various dimensions. For your very own use, it is far better to be brief. For transport as well as selling, it advise to be a little long.



After the timber pellets appear from the pellet machine, they are warm with some heavy steams. They can be dried out as well as cooled in an open field, or by a counter-flow colder. Quick cooling down can improve the solidity of the timber pellets, and also assist in storage as well as transport.



Do not close down the machine right after making pellets.

When you ended up making pellets, don't shut the pellet machine down at the same time. Add some combined oil as well as biomass materials to the pellet machine and also let it compete 1-2 min. In this way, we can fill the die holes with oil mixture, to ensure that we can straight start making pellets the next time. With this process, we can not just maintain the mold and mildew, yet likewise conserve time. When the pellet machine stops, loosen the readjusting screw and also remove the left materials.



The maintenance of roller, die, shafts and transmission

You need to remove all tough things and also metal blocks in raw materials prior to feeding them into the pellet machine, or they would certainly cause damage to the roller, die or major shaft. You can install a tubular magnet on the feed hopper.



The heat inside the pelletizing chamber can reach up to 80 ℃, as well as the roller sustains high pressure during procedure. As there is no dust protector in the pellet machine, so you need to tidy up the bearing every 2-5 hrs, and also lubricate it with oil. After every 8 functioning hrs, the major shaft demand to be oiled. The gearbox requirement cleaning every half a year. If there is uncommon high warm in the gearbox, you can make use of far better gear oil and enhance the clearance in between the gears for maintenance. https://www.energy-xprt.com/articles/gas-vs-pellets-from-biomass-pellet-mill-1103064 in the transmission component likewise need to be changed frequently.



Exactly how to change roller and die?

When the rollers breaks, you can replace the roller shell or the entire set of roller. If the bearing get loose or secured, you require to replace the bearing and also even the shaft.



In ring die pellet machine, just loosen the hoop chuck, take the old ring die apart and also replace it with a brand-new one. If the ring die is repaired with screws, you require to tremble the ring die delicately, and get rid of the screw with even toughness.



In level die pellet machine, the flat die is installed with keeping nuts in the keyway. On the 2 sides of the level die, there are 2 symmetrical screw openings. You can use the screw vehicle driver to press them out, or utilize a magnet to draw them out. Throughout your pressing or pulling, keep the flat die shaking with a hammer, to make sure that the screw will not stuck in the screw opening.



Protection of the drive engine

Choose the matched power according to the required production. If the power is not nearly enough, the production will be low and the pelletizing effect is poor. If the power is as well huge, it will certainly eat even more power, speed up the exhaustion, as well as shorten the service life of roller as well as die.



The exam and also fixing need to be performed in power off condition. The machine must be placed near the functioning location, so regarding decrease the moving time as much as possible. Protect it from water logging, rainfall, electrical leakage, fire, etc.



Only when we make use of the pellet machine properly and preserve it consistently can we take full advantages of the pellet machine and prolong its functioning life.

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