What is the compression ratio of wood chip pellet mill?

The thickness of the wood chip pellet mill die is crucial for raw material forming, the die is too thick, the raw material forming time is longer, the density of the pellet is relatively large, the extrusion difficulty is higher; the die is thin and easy to break, the density of the pellet is relatively small, the extrusion temperature is low, the output is higher but the forming rate is lower or the forming is poorer.


The compression ratio of the mill of wood pellet machine is based on the raw material, so let's take a few simple wood. The compression ratio of poplar is 1:6, the compression ratio of pine is 1:7, the compression ratio of hardwood is 1:5, the compression ratio of crushed shavings is 1:5.5, the compression ratio of corn straw is 1:8, from these simple figures, the compression ratio of different raw materials is different, the harder the raw material the smaller the compression ratio, the more fluffy the raw material the larger the compression ratio, that is to say, the more fluffy the raw material the easier to press the molding, the more fluffy The more fluffy the raw material contains more fiber, the more fiber-containing materials are easy to shape, so let's talk about the compression ratio of poplar wood 1:6, what do the numbers 1 and 6 represent respectively?


If the diameter of the ring die hole is 8mm, then the 1 represents the 8, and the 6 represents the effective hole diameter, the effective hole diameter is equal to the diameter of the hole multiplied by the effective hole length, that is, 6 * 8 = 48, that is, 8:48. 8:48 is simplified to 1:6 The compression ratio of 1:6 is also the compression ratio of poplar wood, that is how the conversion is done. The good or bad material of the wood chip pellet mill depends on the compression ratio of the ring die, but if the customer's molding rate is not very high for you to produce wood chip pellets, then you can reduce the compression ratio appropriately, which can increase the output and also reduce the service life of the die and the pressure wheel.