DGP Dry Type Floating Fish Feed Machine

1. Feed pellets produced by this dry type fish feed extruder are of puffing type, thus making it more easily to digest for fishes.
2. Final processed fish feed pellets from dry type fish feed extruder have unique taste and high nutritious.
3. The dry type fish feed extruder has high wear resistant degree and long service time.
4. This dry type fish feed extruder has advantage of low energy cost, high capacity, easy to maintain.
5. The dry type fish feed extruder novel design, high output and stable performance.
6. This dry type fish feed extruder is suitable for small fish feed pellet plant and professional farmers.
7. Main parts of dry type fish feed extruder are made of special alloy material after heat treatment.
8. Diameters and shapes of fish pellets can be adjusted by choosing different molds.
9. Salmonellas and bacterial infections can be killed by high temperature and high pressure process.

Working Principle

Extruder has been used since 1960’s to treat the soybean meal in U.S.A. Extrusion means to cook the mix of ingredients under temperature, moisture and pressure in the fish feed extruder. Moisture provides lubrication for compression and extrusion and in the presence of heat causes some gelatinization of raw starch present on the surface of vegetative ingredients, resulting in adhesion. Within 20 seconds of entering the pellet mill, feed goes from an air-dry (about 10-12 percent moisture) condition at ambient temperature, to 15-16 percent moisture at 80-90°C. During subsequent compression and extrusion of holes in the die mold, friction increases feed temperature to nearly 92°C. Pellets are discharged onto a screen belt of a horizontal tunnel drier and the moisture content can be dried to below 13 percent, or into a vertical screened hopper to be air-cooled within 10 minutes to the temperature slightly above ambient temperatures.
There is no need to heat outside the dry type machine, through the screw extruding of the raw material, heat is produced and gathered during the rotary working process in the airtight environment, and during the high temperature ripening process, the starch and fiber of the raw material become swell. Then under the pressure-tight condition, material will be formed into pellets by shaping mould. At the end, through the high pressure produced by the regular rotating of the screw, after being cut by the forepart cutter which rotates regularly and high-speedily, the finished products will be shrunk and become small average puffed balls in room temperature and pressure.
 

How to use the dgp dry type extruder mill to make fish shrimp feed?

Puffing Process

The puffing process includes the following steps:

♦ The mixed feed materials are fed into the fish feed extruder;

♦ The screw presses the material;

♦ Turning screw in the barrel causes a thermal energy (temperature is 110-130 °C);

♦ Finally, we have cooked and well treated fish feed pellets.

Benefits of Puffed Fish Feed Pellets

1. From the fish feed extruder, feed pellets are in 'popcorn' state, not only physical state has been changed, but also shape and internal structure of organic molecules has been changed, which make feed pellets easier to digest and absorb for fish.

2. After treatment of puffing, fragrance and palatability of the feed has been improved to stimulate appetite of animal.

3. High temperature and high pressure process can kill the salmonellosis and bacterial infections and makes the pellets Hygeian for fish.

4. The puffed fish feed pellets can float on the water surface without dissolution for over 12 hours, reduce feed waste and keep the water quality.

Application

1. Make high-grade aquatic feed pellets for fish, catfish, shrimps, crab etc.
2. Ideal for making pet food for dogs, cats, etc.
3. First choice of fish feed pellets manufacturers.
4. If you have fish ponds and aquatic farms, this machine is really cost-effective compared with buying expensive pellets.