Dry granulating machine as in recent years, granulation technology and automatic control technology, the emergence of a number of modern production plant and high automation of the modern granulating equipment, thereby improving the production efficiency and product quality, meet the requirements of the rapid development of feed industry.
Dry granulating machine in the feed industry has characteristics of application:
1, the automatic control technology of dry granulating machine conditioning temperature
Quenching and tempering temperature is the granulation process is a very important parameter. Quenching and tempering temperature feed varieties and different formulations of the required is not the same, such as containing sensitive ingredients feed General requirements of quenching and tempering temperature does not exceed 60 ℃ tempering temperature of livestock and poultry feed, generally between 75~90 ℃ tempering temperature, aquatic feed are generally in between 85~100 ℃. Specific to each feed formulation, quenching and tempering temperature has an optimum value, if we can do in the adjustment of the actual work will feed after quenching and tempering temperature to the optimum value or in the vicinity of a narrow range of small amplitude fluctuations, it can maximum limit satisfy the quality requirements, but in actual production, because of the more complex conditions, as the steam pressure of boiler is not stable, the steam flow and temperature change, the feeding quantity is different, plus the operating personnel with high and low levels of quenching and tempering temperature, actual it is difficult to ensure an optimum value, sometimes swinging amplitude range is relatively large, so the impact on the hardening effect, can sometimes cause plugging at the same time machine, operators need to constantly adjust the tempering temperature, wasting a lot of manpower.
2, the automatic control technology of dry granulator feeding speed
The main purpose of dry granulator technology is to ensure the stability of dry granulator operating current, in order to give full play to the production capacity of dry granulating machine and to prevent plugging machine. Stability of the technology to ensure a good dry granulating machine working current, give full play to pellet performance, reduce machine failure rate.
Dry granulator feed production process as one of the most important equipment, its performance directly affects the quality of pellet feed production. With the development of modern industry and feed industry, feed the increasingly fierce competition in the market, production of feed manufacturers need equipment manufacturers to provide high energy saving, granulation equipment, high degree of automation, easy operation, good effect of granulation. Dry granulating machine in the production process is easy to appear refined and low pressure instability problem.
Dry granulating machine low yield, this is related with the course material formulation, but according to many pharmaceutical companies use the dry granulating machine situation, roll is the main reason. The quenching process of quenching and tempering process, the surface of roller surface is not the same, will roll temperature on the high side problem between a pair of rolls parallel degree relative bus deviation, the hardness is not enough, under high pressure, cause a lot of roll after use, into play in the material was neutralized particles containing some fine powder is more, the rate of finished products will be sharp decline, or a began to use the finished product rate is not high. The structure design problem is that of dry granulator, many domestic pharmaceutical companies used in the production of Chinese medicine granule dry granulating machine, because the traditional Chinese medicine granule easy moisture absorption, glue, material easily accumulate blocked channel in the dry granulating machine, when these problems to have to stop machine cleaning, not only affects the production efficiency, will reduce yield. So these problems, the main reason, processing technology was one of the main reasons for roll and based on cost considerations! In the domestic dry granulating machine manufacturing, more prominent problems. Of course, poor cooling effect is one of the reasons, if not effectively cooling roller surface after extrusion, hot extrusion generated, to prevent the material heat bonding, bonding wheel phenomenon, will greatly reduce the rate of.
Dry granulating machine pressure instability problem
Domestic dry a granulator common pressure is unstable, the domestic production of dry granulating machine, the hydraulic system design is generally pump is in continuous mode, often caused by the temperature, pressure instability, more importantly will damage the hydraulic oil molecular structure, the working time is less than 30 classes should be replaced hydraulic oil. After running for a period of time, will appear the fault, the more reason, is mainly the pressure circuit design problems, according to the requirements of materials and technology, a reasonable choice of hydraulic structure, pressure peak value and volatility, the runtime, oil pressure fluctuation peak in a certain range, the basic approach a straight line. |
