Vertical Ring Die Wood Pellet Mill

Being one energy saving type professional biomass pellet machine, vertical ring die wood pellet mill get its name from the vertical ring die that is beneficial for working parts during pelleting process. This type of wood pellet machine is especially suitable for large and medium pellet production manufacturer. Ring die wood pellet mill is roller driven type and combines advantages of flat die pellet mill and ring die pellet mill. It can be adopted to process wide range of biomass materials such as wood chips, straw, sawdust, rice husk, peanut shell, chaff, bamboo shavings, bagasse, alfalfa, palm kernel shell, etc.

Characteristics of Vertical Ring Die Wood Pellet Mill
1.Feeding vertically, raw materials with no arching, easy for heating dissipation.
2.Key parts adopts superior alloy steel with heat treatment by German vacuum furnace, which together prolongs its service life by 5-7 times.
3.High precision gears with automatic lubricant pump system makes the gearbox has stable working condition.
4.Independent and frequency changeable cutting device make the machine has high pelletizing rate.
5.Ring die with different pore diameters for customer to choose, long service life, high quality, pellets with smooth surface.

Working Principle of Vertical Ring Die Wood Pellet Mill
Vertical ring die wood pellet mill combines both centrifugal force and extrusion pressure to ensures hardness and density of pellets. Pellets is extruded by wood pellet mill from the inside to outside. Ring dies of this wood pellet mill possesses double layer structure. For making different sizes of pellets in one production, you can choose ring dies which contain upper and lower dies with different hole sizes. In order to improve working parts’ service life, you can choose upper and lower dies with the same hole size. Rollers move while ring die remains stable during working condition, rollers compress mixed raw materials into die holes to form into pencil-like extrusions which are then cut by knives into desired length.
Attention: the smaller the pellet, the greater the cost of production, that is because the diameter of holes decide the diameter of pellets, the smaller the die holes the greater effort is required to compress materials into holes, so the greater power is needed.

Advantages about Roller-driven Wood Pellet Mill
As above mentioned rollers spin to compress raw materials through holes and then condensed into wood pellets, there are three advantages to the vertical ring die wood pellet mill. One is that compared with traditional design, the rotating roller has much longer service life–about 2,000 hours. Second is that wood pellets produced by rotating roller are much longer–up to 3 centimeters or more. Third, roller-driven design ensures more power compressed on the material, so compared with other die-driven pellet mill, it can process hard materials into biomass pellets.

Vertical Ring Die Wood Pellet Mill Technical Parameters