subject: Feed mill's historical evolution and development trends - Mill, Market Analysis - Machinery Industry [print this page] Feed mill's historical evolution and development trends - Mill, Market Analysis - Machinery Industry
Feed ingredients in feed processing smash is a very important link of unit mass of crushed material particles can increase the total surface area, increase the nutrients in animal feed in the digestive juice of the solubility, to improve animal digestibility; Moreover, the crush size of materials the size of the follow-up processes (such as granulation, etc.) are the ease and quality of finished products have a very important effect; In addition, the granularity of the size of the direct impact on production costs, in the production of powder with the feed, the grinding process of the electricity consumption of about 50% of the total power consumption to 70%. The smaller the granularity, the more favorable animal digestion and absorption, the more beneficial granulation, but power consumption will increase accordingly and vice versa. Therefore, proper regulation of grinding technology, choose the appropriate type is a feed mill production should not be neglected.
Grinding equipment used in feed industry has a variety of forms, including, hammer mill for its small footprint, high grinding efficiency, power consumption, etc, are the most widely generalizable. Hammer mill sieve basic structure including the cylinder, rotor hammer, hammer, and fixed in the hammer impact around the rotor tooth plate. Its working principle is to introduce the material impact of tooth plate, sieve plate and the space between the rotary hammer, hammer, etc. the use of materials and rubbed against the role of the material broken into a number of pellets, is a shock-type grinding equipment.
One hammer mill speed of evolution
1. From single-speed to double speed, the first hammer mill has only one speed, MIAG 50s in the last century, the development of the H880 type hammer mill also is equipped with two different motor speed so that the company was not only in the granulation, but also in areas hammer smash leading. The model can be described as the first true for the feed industry, hammer mill. At that time, the rotor speed 3000r/min people is respected.
2. From a high speed to low speed: in the next few years, attention focused on reducing the work of hammer mill noise on one of its major initiatives is to reduce the rotor speed, generally reduced to 1000 ~ 1500r/min. Hammer in order to maintain proper end of line speed, pulverizing the same time is bound to increase the rotor diameter. Biihler-Beka company developed the first generation of these models??? Zinal series crusher, the rotor diameter is about 1100 ~ 1200mm, crushing chamber width 350 ~ 650mm. Then there is known as a large mill products are emerging, such as the Lame-miag typical products, the crushing chamber diameter of 1200mm, sieve plate widths up to 1100mm; Amanduskahl produced Akana2000 type, the rotor diameter of 1200mm, screen plate width of 1000mm, is equipped with power 355kW; Afall / zaragoza company's products, its crushing chamber diameter of 1446mm, width sieve over 1100mm.
2, hammer mill structure similarities and differences
Comprehensive variety of information can be found, most of the hammer mill despite many similarities, but there are very different, because of its important forage plants of different materials used. Europe, mostly mixed-feed plant smash (the first ingredient and grinding), and often there is no grain materials; and most of the United States, 50% of feed formulation is based on corn or wheat, rarely used such hard grinding oats, grains like barley, raw water is also slightly lower than in Europe; domestic situation similar to the latter.
