Notes

How to utilize and also maintain timber pellet machine properly?<br>
Grinding before using

Most roller and also level dies in pellet machine are refined by high-heat therapy. After planing, boring, milling, and also relieving process, there are normally several rags inside the die holes, which may influence the pelletizing results and production. As a result, before beginning a brand-new pellet machine, or after replacing a brand-new die, you require to grind it extensively.



We utilize oil combination to process grind the roller and level die. The oil combination is composed of 20% great sand, 65% biomass products( like sawdust), 15% waste engine oil. Prior to feeding the oil blend to the pellet machine, you ought to change the clearance between roller as well as flat die to 0.1-0.3 mm. The grinding procedure needs to last 15-40 minutes.



For ring die pellet mill, the grinding procedure calls for more oil blend as well as longer time. The amount of oil combination is 10% that of pellet production per hr. The grinding time is 30-50 minutes. And also the clearance in between ring die and the roller is 0.1-0.4 mm.



Pretreatment of basic materials

The appropriate moisture material of biomass materials should between 14% and 20%. Dry products are upsetting form, wet materials will make the pellets loose. The dimension of the raw products ought to be less than the hole size of pellet mill dies. Normally, the hole size of the pellet mill die is 6mm as well as 8mm, as well as the dimension of raw materials ought to be under 5mm, or they may block the holes and decrease pellet production.



The adhesive pressure determines the developing rate of the pellets A lot of biomass materials contain lignin, which would certainly melt under heat and also serve as binder. However some products like rice husk has reduced adhesive force. It need to be combined with sawdust or binders to make pellets



The density as well as size of the timber pellets.

The density of wood pellets is determined by the opening size of the die. The size is figured out by the slicer. In flat die pellet machine, the slicer is mounted under the level die, while in ring die pellet machine, the slicer is mounted outside the ring die. Both of them can be adjusted to accomplish various sizes. For your own usage, it is far better to be brief. For transport as well as marketing, it suggest to be a little lengthy.



After the wood pellets come out from the pellet machine, they are warm with some heavy steams. They can be dried out and also cooled down in an open area, or by a counter-flow cooler. Quick cooling down can improve the firmness of the wood pellets, and assist in storage and transport.




Do not close down the machine right after making pellets.

When you finished making pellets, do not close the pellet machine down at once. Include some mixed oil and also biomass products to the pellet machine as well as allow it run for 1-2 min. In this way, we can fill the die openings with oil mixture, so that we can directly start making pellets the following time. With this process, we can not just maintain the mold and mildew, however additionally save time. When richi pellet quits, loosen the readjusting screw and also clear away the left materials.



The maintenance of roller, die, shafts as well as transmission

You ought to eliminate all tough objects and steel blocks in raw materials before feeding them right into the pellet machine, or they would create damage to the roller, die or main shaft. You can set up a tubular magnet on the feed receptacle.



The heat inside the pelletizing chamber can rise to 80 ℃, and also the roller sustains high pressure during procedure. As there is no dust guard in the pellet machine, so you need to clean up the bearing every 2-5 hours, and lubricate it with oil. After every 8 functioning hours, the primary shaft need to be oiled. The gearbox demand cleansing every half a year. If there is irregular high warmth in the gearbox, you can make use of far better equipment oil and also raise the clearance between the equipments for maintenance. The securing screw in the transmission component additionally require to be changed routinely.



Just how to replace roller and die?

When the rollers wears out, you can change the roller shell or the whole set of roller. If richi pellet machine get loosened or locked, you need to change the bearing and also even the shaft.




In ring die pellet machine, just loosen up the hoop chuck, take the old ring die apart and change it with a new one. If the ring die is fixed with screws, you require to shake the ring die delicately, and remove the screw with even strength.



In flat die pellet machine, the level die is set up with keeping nuts in the keyway. On the 2 sides of the flat die, there are two symmetrical screw openings. You can utilize the screw motorist to push them out, or make use of a magnet to draw them out. During your pushing or pulling, maintain the flat die vibrating with a hammer, so that the screw will not stuck in the screw opening.



Defense of the drive engine

Select the matched power according to the required production. If the power is not nearly enough, the manufacturing will be low and the pelletizing effect is poor. If the power is as well big, it will certainly eat even more power, accelerate the exhaustion, and reduce the life span of roller and also die.



The exam and also repair work ought to be carried out in power off condition. The machine must be put near the functioning area, so regarding reduce the moving time as high as feasible. Protect it from water logging, rainfall, electric leak, fire, etc.



Just when we use the pellet machine properly and also preserve it frequently can we take full advantages of the pellet machine as well as extend its working life.


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