Feed Screeners

Introduction of feed screeners

The application of Feed screeners in the feed processing industry mainly focuses on two aspects: one is to clean up the impurities in the raw materials; the other is to classify the raw materials or products according to the particle size, including the cleaning of the impurities in the raw materials, the classification of crushed materials, The cleaning of impurities in the powder before granulation and the classification of granulated products.

Benefits of feed screeners

1. The sieving is fine to 500 mesh or 0.028mm, which can satisfy the cleaning of impurities contained in different feed materials.

2. Bounce net cleaning devices are installed under the screens of each layer. By continuously hitting the screens, the materials can be screened smoothly and effectively avoid the problem of material blockage.

3. Impurities and coarse materials are automatically discharged, continuous operation is possible, and the output can reach up to 5 tons/hour

4. 1-5 layers of multi-layer screening can obtain 2-6 kinds of finished products with different specifications.

5. Fully sealed structure, no powder overflow, no liquid overflow.

6. The discharge port can be rotated 360°, and it only takes 3-5 minutes to replace the screen.

Working principle of feed screeners

Feed screeners use a vertical motor as the excitation source, and eccentric weights are installed at the upper and lower ends of the motor to convert the rotating vibration of the motor into a horizontal, vertical, and inclined three-dimensional motion, and then transfer this motion to the screen surface. Adjusting the phase angle of the heavy hammers at the upper and lower ends can change the movement trajectory of the feed on the screen surface. The upper layer of the rotary vibrating screen can use a larger screen mesh to screen large particles or agglomerated feed. During the screening process, the exciting force generated by the vibrating motor lock is transmitted to the screen to condense into The lumps of feed are broken up for the second level of sieving.

Technical parameters of feed screeners

Model	Diameter (mm)	Feeding Size (mm)	Frequency (RPM)	Layers	Power (kw)	Capacity (kg/h）
DH-400	400	<10	<1500	1-5	0.18	100
DH-600	600				0.25	200
DH-800	800				0.55	500
DH-1000	1000				0.75	800
DH-1200	1200				1.1	1200
DH-1500	1500				1.5	1800
DH-1800	1800				2.2	2000

Application of feed screeners

1. Cleaning of pellets

Feed mills are used to refer to materials that need to be crushed as pellets, including grain and meal raw materials.

Grain raw materials come directly from the field, and the impurities contained in them are relatively complex. There are two main categories: one is impurities with a larger particle size than the grain raw materials, such as stones, corn cobs, hemp flakes, straw, hemp rope, plastic flakes, etc.; the other It is soil and fine sand with a smaller particle size.

2. Cleaning of powder

The mixed feed should also be sieved with a cone primary cleaning sieve before pelleting. On the one hand, it can clean up the impurities that may be mixed in during the processing and the impurities that cannot be removed in the raw material cleaning, and on the other hand, it can break up the agglomerated materials.

3. Classification of pellet feed

In pellet feed processing, in order to increase the output of pellet mills and reduce pelletizing energy consumption, large-diameter die holes are often used for production, and then crushed into small pellets. After the particles are broken, they need to be classified to separate the too fine powder (the unformed powder in the granulation process or the powder produced in the crushing process) and the too coarse particles (the particles that are not sufficiently broken), so that they can enter The particles in the finished product processing section meet the product size requirements.