Improve feed production - transformation of batch mixing system

Dosing and mixing is one of the key processes in the compound feed mill, which directly affects the yield, quality and energy consumption of the compound feed. The ingredients are according to the requirements of the feed formula, and the process of accurately weighing the different kinds of feed materials is the core of feed processing; the mixing is a key process of mixing the various materials after the ingredients, which determines the production of the feed mill. Ability and product quality. Therefore, in order to improve the yield and quality of feed, it is necessary to focus on the research of ingredients and mixing systems. 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

1 ingredients, mixing system constraints 6ee China feed industry information network - based on feed, service animal husbandry

1.1 The relationship between ingredients, mixing cycle and production 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

Starting from the first material feed of the ingredients, to the end of the feed of the last material, and then into the mixer to fully mix, to achieve the mixing uniformity according to the quality requirements, until the end of the mixer discharge, complete the process All the time required is called a cycle and is represented by "T". Generally, in the process design of the feed mill, it is calculated at T=6min, so 10 batches of production can be completed in 1h. However, different ingredients, mixing methods, different batching scales, mixers, and different feeders and silos will make the ingredients and mixing cycle (T) different. Therefore, through the research and test of the feed plant's ingredients and mixing system constraints, the feeder and the number and capacity of the silo can be reasonably configured, and the appropriate batching scale and mixer can be selected to obtain the best ingredients and mixing cycle. The effect is to achieve the purpose of increasing production, ensuring quality, and reducing power consumption. For example, a feed mill equipped with a 1 t/batch batch scale and mixer, calculated at T = 6 min, has a capacity of 10 t/h. However, if the batching and mixing cycle is shortened to 5 minutes, the production capacity can be increased to 12 t/h. The production capacity of various different ingredients and mixing cycles is shown in Table 1. 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

6ee China Feed Industry Information Network - based on feed, serving animal husbandry

Generally, the power consumption of pellets is 30 kWh/t. After the output is increased by 20%, the power consumption can be reduced to about 26.5 kWh/t, and the power consumption will be reduced by more than 10%. 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

Therefore, through the technical transformation of the original feed mill, trying to shorten the batching and mixing cycle (T) is an effective way to improve the production capacity of the feed mill and reduce the power consumption. 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

1.2 The main factors affecting the ingredients and mixing cycle (T) 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

6ee China Feed Industry Information Network - based on feed, serving animal husbandry

As can be seen from Figure 1, the entire period (T) depends on t, T1, T2, T3, T4, and the dosing and mixing are performed in parallel. If T is to be shortened, t and T1, T2, T3 must be shortened at the same time. T4. When t>T1+T2+T3+T4, the mixer will be idling, or the mixing time of the mixer should be artificially lengthened, so t≤T1+T2+T3+T4 is generally required. 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

2 batching process technology research 6ee China feed industry information network - based on feed, service animal husbandry

2.1 Feeder 6ee China Feed Industry Information Network - based on feed, service animal husbandry

The feeder in the batching section is a very important link, which is a major factor in ensuring accurate weighing of the batching scale and shortening the batching time (t). Commonly used feeders include electromagnetic vibrating feeders, impeller feeders, screw feeders, etc. Among them, the application of screw feeders is the most common. It is based on advanced control methods to make it through fast feeding and slow feeding. Several methods such as jogging feeding are used to ensure the batching accuracy of the batching scale. 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

2.1.1 Reasonable equipment for the capacity and speed of the feeders 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

The material with large capacity, large volume and large proportion in the formula enters the big warehouse, correspondingly configures the large feeder and is equipped with high speed; otherwise, it enters the small warehouse, correspondingly configures the small feeder with low speed. Medium and medium speed feeders should be used in the middle. The same feeder can also be equipped with different speeds due to the difference in raw materials. In the transformation, the screw feeder ratio can be increased to increase the screw feeder speed and shorten the batching time. For example, in the 10t/h feed mill, 15 feeders were originally designed, and the batching time was 5 min. By increasing the screw feeder speed (but not exceeding the centrifugal speed limit), the batching time can be shortened to 4 min (see Table 2). 6ee China Feed Industry Information Network - based on feed, serving animal husbandry

CS Tee

Carbon Steel Tee,Pipe Tee,Straight Tee

Zhongyan Machinery Co., Ltd. , http://www.juhengflanges.com