The vertical ring die pellet mill refers to a pelletizing machine type where the axis of the ring die is placed vertically perpendicular to the ground. In the vertical ring die pellet mill, the die remains stationary while the press roller rotates. Due to the vertical placement of the die, the top is directly open for feeding, which completely eliminates the issue of material clogging caused by poor feeding flow for loose-textured biomass materials. The vertical ring die pellet mill has been on the market for over 10 years. During this decade of development, it has undergone several major technological transformations, making the compression of biomass materials increasingly stable.

Let’s take a look at its several stages of innovation:

Generation 1: The gearbox featured a bevel gear structure, and the ring die head achieved innovation, breaking through the difficulty of biomass material forming. During the era of the first-generation vertical ring die pellet mill, it was hard to find machines capable of compressing biomass materials on the market. Due to the loose texture and light weight of biomass materials, the available machines at the time, such as the old flat die pellet mill (with a rotating die plate and stationary press roller structure) and the horizontal ring die pellet mill, each had their own drawbacks and were not up to the task of compressing biomass materials. Therefore, the first-generation vertical ring die pellet mill was met with enthusiastic market response upon its release.

Generation 2: The gearbox adopted an industrial enclosed gearbox structure, marking a階段性進(jìn)展 in gearbox design. Although the first generation was perfectly suited in terms of pelletizing structure, biomass material compression generally requires a high compression ratio and greater extrusion force. Moreover, biomass materials often contain impurities, which can cause jamming during the compression process. This situation places higher demands on the reducer. The automotive rear axle differential with a bevel gear structure顯然無法完美滿足需求, and at that time, the entire industry's understanding of reducers, including the development of the reducer industry itself, was relatively滯后. Therefore, the automotive rear axle differential was the only option. However, during the second generation, reducers saw a breakthrough. The emergence of industrial enclosed gearboxes enhanced reducer performance to some extent, leading to a qualitative leap for the vertical ring die pellet mill.

Generation 3: The gearbox was designed as a專用齒輪箱 for pellet mills, featuring parallel hard-tooth surfaces, achieving a breakthrough in gearbox structure. As the biomass pelletizing industry continued to develop, its social influence gradually increased. Meanwhile, the reducer industry also matured, with processing and technical capabilities初具規(guī)模. Addressing the long-standing issue of unsatisfactory reducers for the biomass pelletizing industry, the reducer industry made significant contributions. The birth of the parallel hard-tooth surface gearbox led the vertical ring die pellet mill to achieve another qualitative leap.

Generation 4: The gearbox remained a專用齒輪箱 for pellet mills with parallel hard-tooth surfaces, achieving a breakthrough in gearbox structure. Additionally, the motor adopted a square high-efficiency motor more suitable for pelletizing conditions, saving 10% energy at the same power. The fourth-generation pellet mill further advanced in motor technology, leading a new wave of innovation in pellet mills.

Generation 5: You might be surprised to read this—what? The fifth generation is already out? Yes, you read it right. A new round of technological revolution has emerged. The reducer has been eliminated, ushering in the era of reducer-free pellet mills. Fully silent operation with a 20% direct reduction in energy consumption—what are you waiting for? Hurry up and check out Qihang Pellet Mill to try it out!

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