Fish Feed Pellet Extruder

Zhengzhou Fanda Machinery Co., Ltd. is one of the leading manufacturers and suppliers of fish feed pellet extruder in China. With abundant experience, we warmly welcome you to buy cheap fish feed pellet extruder for sale here from our factory. For price consultation, contact us.

Fish Feed Pellet Extruder

A fish feed pellet extruder is a kind of pellet machine that makes feed for fish, shrimp, crabs, pets, etc. Fish feed ingredients include corn, rice, wheat, bone meal, soybean meal, meat meal, Fish meal, tapioca flour, algae meal, oil, vitamins, and minerals. Depending on the application, our machine can make floating or sinking fish feed. We offer dry-type and wet-type fish feed extruders.

Dry Type Fish Feed Extruder Advantages
- Feeding evenly and constantly: Flat-bottomed scraper mechanism and feeder controlled by transducer make sure that the materials can be fed evenly and constantly.
- Cutting quickly and accurately: The removable cutting mechanism uses knives with good elasticity, which attach to the die plate tenderly, can be regulated in six directions, and can be operated quickly and accurately.
- High efficiency and low power consumption: With a conditioner, the steam and water can be directly injected into the extruding chamber through the special mechanism; thus,s the quality and quantity of products can be improved greatly with lower power consumption.
- Wide application: Variable configurations of screw bolts can match the production demands for different formulas and raw materials.
- Longer service life: Screw bolts and dies are processed through vacuum quench treatment, are also processed with high processing precision, and have long use longevity.
- Easy operation: All the operating parts, such as steam valves, etc., adopt a humanized design to facilitate actual operations.

The main body of the dryer-type fish feed extruder is almost the same as the wet type; the only difference is that it has no conditioner on top, and raw material is fed into the screw rod via a screw feeder without ripening.

Dry-type fish feed extruder technical data

A wet-type fish feed extruder is equipped with a boiler that can continuously provide hot steam. It can produce all kinds of floating or sinking aqua feed for fish, eel, shrimp, crab, loach, bullfrog, etc., as well as many kinds of pet feeds for cats, dogs, etc. The pellet size can range from 0.9 to 15mm to feed fish of different sizes. With high capacity and top-quality products, our fish feed extruder is a preferred choice for medium- or large-size feed processing factories and aquaculture farms.
Extrusion means cooking a mix of ingredients under controlled temperature, moisture, and pressure in the fish feed extruder. During operation, the extruder chamber temperature is 100-120℃ via electric heating. This kills bacteria and pathogens during operation. The machine has a temperature indicator. Once it reaches the set temperature, the thermocouple automatically stops heating. During the high-temperature ripening process, the starch and fiber in the raw material swell. Then, under pressure, a shaping mold forms the material into pellets. Finally, under the high pressure produced by the screw's regular rotation, the forepart cutter cuts the material, and the finished products shrink into small, evenly sized puffed balls at room temperature and pressure.

Wet-type fish feed extruder features.

- Screw sleeve adopts a jacketed construction, which can be injected with hot steam or cooling water; thus,s the water temperature can be controlled effectively.
- The conditioner can make the materials have full gelatinization of starch by a combination of hot steam and mechanical shear/mixing. The materials may remain in the conditioner for up to 180s.
- We can make the conditioner from stainless steel as well as carbon steel. The carbon steel conditioner is cheaper, while the stainless steel conditioner is much better for making feed.

Wet-type fish feed extruder technical data

How to Choose a Dry-Type or Wet-Type Fish Feed Extruder?

Fish feed pellet extruders fall into two types: dry-type and wet-type. The differences and features of the dry-type extruder and wet-type extruder:
1. The dry-type fish feed extruder does not need a steam boiler, while the wet type is equipped with a conditioner and needs to be equipped with a steam boiler. So the dry-type fish feed pellet extruder is cheaper and easier to use and operate.
2. The feed pellets made by the wet-type fish feed pellet machine are smoother and of better quality because the material is ripened and mixed enough in the conditioner compared with the dry-type extruder.
3. The capacity of the wet-type fish feed pellet machine is higher than that of the dry-type feed pellet machine, so usually, the wet-type fish feed machine is suitable for large feed pellet factories. In contrast, the dry-type fish feed pellet machine is better and more economical for small and medium-sized users or factories.

Fish Feed Pellets: To Sink or to Float?

Commercial fish diets can be classified into floating (extruded) or traditional sinking (pressure-pelleted) pellets. Both floating and sinking feed can produce satisfactory growth, but some fish species prefer floating, others sinking. Both pellet types have pros and cons. However, the use of floating pellets provides more advantages compared to sinking ones:
1. Reduce Waste. Sinking pellets that settle on the bottom of the tank often get lost and wasted. However, floating feed pellets can retain their shape even after hours in the water; uneaten feed stays intact.
2. Decrease Disease. Sinking pellets that remain at the bottom of the tank will eventually rot, which may lead to bacterial proliferation and the spread of harmful fish diseases.
3. Convenient Observation. Another reason to feed floating (extruded) pellets is that farmers can directly observe feeding intensity and adjust feeding rates accordingly. Determining whether feeding rates are too low or too high is important for maximizing fish growth and feed-use efficiency. However, sinking pellets will fall to the bottom of the tank, and fish can not find them.

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