I. Requirements for equipment before granulation Before the production, the equipment is inspected and maintained to ensure the quality of the products. It includes the following aspects:
1. The granulation and the magnet on the upper part should be cleaned once per shift. If it cannot be cleaned, the iron in the feed may enter the ring mold of the granulator, which will affect the normal operation of the granulator.
2. Monitor the wear of the ring mold and the pressure roller: the wear of the pressure roller may affect the production capacity; the excessive wear of the compression mold reduces the effective thickness of the compression mold, which will affect the particle quality.
3. Timing the press roller to ensure the normal operation of the press roller.
4. Check if there is any backlog of material in the cooler and check if the cooling plate or screen surface inside it is damaged.
5. The crusher roller should be inspected regularly: if the roller corrugated teeth become dull, it will reduce the crushing capacity and reduce the product quality.
6. Check whether there are holes, blockages and adhesions in the grading screen of each class, and the screen surface is intact without damage to achieve the correct particle classification effect.
7. Check the granulator cutter: The cutter is too blunt and will increase the feed powder.
8. Check the steam separator of the steam to ensure the quality of the steam entering the conditioner. Otherwise it will affect the annual production capacity of the light and the pellet quality of the feed.
9. When refueling, check whether the buffer bin and the finished product bin above the granulator are completely emptied to prevent mixing.
Second, the conditioning technology
Pigs and pigs are generally sweaty corn with high starch content and low crude fiber content. Therefore, the structure and strength of the pellet feed depend on the quenching and tempering technology, and the raw materials are softened by heat and steam to improve the granulation performance of the feed. During the quenching and tempering process, the starch of the feed will be partially gelatinized, and the gelatinized starch acts as a binder to increase the pellet formation rate of the feed.
The quenching and tempering time of the general conditioner is 10~20 seconds. The prolonged quenching time can be: 1. Increase starch gelatinization; 2. Increase feed temperature and reduce harmful microorganisms; 3. Improve production efficiency, improve pellet quality, and improve vapor pressure. When it is low, heat and water can be dissipated more quickly. In order to improve the quenching and tempering effect, the vapor pressure must be controlled. Generally, the production of pellet feed can be adjusted according to the actual operation needs, the feed moisture is 16~18%, and the temperature is 75~85 degrees.
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