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Technical Advantages of High-Pressure Roll Ball Press Machines

Time：Nov 22,2021

Technical Advantages of High-Pressure Roll Ball Press Machines

So, in practical terms, when we use a high-pressure double-roll pelletizer, what are the technical advantages of this equipment that deliver enhanced overall efficiency and improved product quality?

First is the advantage of efficient operation. In modern mechanical operations, we naturally aim to achieve higher productivity by optimizing our existing resources and equipment—ultimately helping us boost overall production efficiency. That’s why, when using a high-pressure double-roll pelletizing machine, its highly efficient operational mode can deliver even greater practical value. Moreover, this machine’s efficient running style can increase the output of the entire system by 30% to 40%, enabling not only improved efficiency but also enhanced technical performance and operational profitability.

Second, the energy-saving advantage of the high-pressure double-roll pelletizing machine. While achieving efficient operations, we naturally pay close attention to energy consumption—after all, this directly impacts our operational cost investments. Therefore, for applications involving the high-pressure double-roll pelletizer, the equipment’s low energy usage and high production output give it a more practical and cost-effective value proposition.

Method for Manufacturing a High-Pressure Dual-Roll Ball Press

This utility model relates to a high-pressure double-roll ball press machine, which falls under the category of high-pressure forming equipment. It is widely used in various powder applications, particularly for pressing spherical pellets from powdered refractory materials.

Before this invention, China had never seen a large-scale, high-pressure roller ball-pressing machine. Given the current state of China's refractory materials industry, there is an urgent need to develop and utilize high-purity natural magnesium oxide. This, in turn, demands that the fired refractory products exhibit a significantly higher bulk density—placing specific requirements on the ball blanks themselves. However, conventional ball-pressing machines produce blanks with relatively low volume densities, falling far short of the necessary standards. Since the powdered raw material can be directly dry-pressed into balls without the need for binders, the press must deliver exceptionally high linear pressure to meet these exacting demands.

To fill the domestic gap in high-pressure granulation equipment, a prototype was introduced from abroad. After evaluation, the following issues need to be addressed:

(1) The gears in the main reducer are improperly designed and the structure is not compact.

(2) Although the hopper is equipped with a rotating scraper, material still tends to fall, especially during semi-dry balling processes;

(3) The pre-compression screw has a small pitch, making it suitable only for dry-batch pressing;

(4) Due to the use of ball groove alignment.

To address the issues mentioned above, the objective of this utility model is to develop a compact, reliable high-pressure double-roll ball press machine that eliminates material slippage, features an accurate ball-groove alignment method, and delivers high production output. This machine can be used effectively in both dry-process and semi-dry-process ball pressing applications.

To achieve this goal, the measures taken by this utility model and their resulting effects are:

(1) Increase the diameter of the pressure roller to boost production;

(2) Improve the gear configuration in the main reducer by integrating a single gear that simultaneously handles both reduction and synchronization functions. This eliminates the need for additional gears, resulting in a more compact reducer design with reduced overall dimensions. Additionally, the decreased stress levels enhance the stiffness and strength of the shafts.

(3) The hopper is equipped with a vibration motor, transforming it into a vibrating hopper. This design effectively addresses material discharge issues—whether using dry pressing or the semi-dry pressing method—and also enhances the venting process.

(4) Two types of pre-compression screws with different pitches are used: the first has a smaller pitch, ideal for compacting highly flowable material pellets—typically dry-pressed balls—while the second features a larger pitch, suited for compressing less fluid materials into semi-dry pressed balls.

(5) Alignment of the ball groove is achieved by using the staggered teeth method with a gear coupling. Once properly aligned, it remains securely in place, ensuring highly reliable operation.

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