1. What’s floating fish feed extruder?

Because of the advantages of floating fish feed extruder puffing, more and more feed mills have begun to puff aquafeed.

 At present, the main working principle of the floating fish feed extruder used in the floating fish feed mill is to treat the powdery material containing a certain amount of starch (more than 20%) through a conditioner, so that the moisture content of the material can reach 25% to 27%, and the temperature is raised to 80℃~100℃.

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The floating fish feed extruder consists of a feeding system, a transmission system, an extrusion system, a discharging die and an electrical control system. The quenched and tempered material enters the screw extrusion zone.

Related solution:20-24T/H Fish Feed Mill Plant

Since the volume of the extrusion zone gradually decreases along the axis, the pressure on the material gradually increases, and the compression ratio can reach 4 to 10.

The material is pushed by the floating fish feed extruder screw extrusion, and accompanied by strong shear and friction, the pressure and temperature rise sharply. Under the action of high temperature and high pressure, the starch in the material can be basically completely gelatinized, and the protein is partially deformed.

(1) The whole floating fish feed extruder is made of stainless steel, which is hygienic, safe and reliable, easy to clean.

(2) The floating fish feed extruder design follows automatic assembly line production, with small footprint and less labor. The equipment is easy to operate, saving time and effort, and reducing labor consumption.

With the rapid development of the aquatic feed market, the domestic demand for aquatic feed has been driven. According to this market demand, RICHI has researched and developed various types of floating fish feed extruders.

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2. Process flow of freshwater fish feed production line:

The floating fish feed extruder adopts twin-screw extrusion technology, combined with Richi Machinery’s experience in puffing technology research for many years, and is a new generation of puffed food equipment designed and manufactured to meet the needs of food and related industries.

Related solution:24-28T/H Aqua Feed Plant

The floating fish feed extruder production line has the advantages of stable production performance, flexible operation, fully automatic production process, beautiful appearance (using stainless steel material), etc.

Raw material preparation → mixing → conveying → extrusion → conveying → drying → oil injection → seasoning → cooling → screening → packaging

(1)Raw material cleaning

Receipt of raw corn and soybean meal in bulk; the clean-up process is all operation units that pass the corn and soybean meal that has passed the inspection of the raw material inspector into the silo.

In this process, the impurities in the raw materials are firstly removed by the impurity removal equipment, and then transported to the silo as planned by the receiving equipment and the demagnetization equipment.

 The floating fish feed extruder production line equipment includes receiving devices (such as unloading pits, platforms, etc.), conveying equipment, primary cleaning screens, and magnetic separation devices (such as permanent magnet drums, permanent magnet drums, etc.).

For the receipt of bagged raw materials, it means that the loading and unloading personnel unload the raw materials that have passed the inspection of the raw material inspectors and store them neatly in the warehouse.

Related post: Floating Fish Feed Mill

In the process of receiving the goods, four points should be done:

  • Accurately count the quantity;
  • There is no quality problem in the raw materials;
  • The receiving path is correct;
  • The receiving environment is clean.

(2)Ingredient process

The batching process is to weigh the raw materials in the batching bin from the feeder under each batching bin to the batching according to the formula requirements. After each raw material is weighed by the batching scale, the raw material is transported to the powder storage silo.

 The ingredients are weighed from the silo, these weighed raw materials enter the powder silo, a small amount of material and premix are added directly and manually weighed and then put into the silo for mixing. The quality of the batching process directly affects the accuracy of product batching.

(3)Crushing process

The pulverization process means that the raw materials to be pulverized in the silo are sent to the crusher to be pulverized into powder, and then sent to the silo to be mixed by the conveyor before use. The purpose of this process is to control the pellet size of the material.

The design efficiency of the crusher in this process determines the production capacity of the process equipment, and it is also the process with the largest energy consumption in the production of powdery materials.

(4)Mixing process

In the mixing process of floating fish feed extruder plant, the crushed raw materials are discharged from the mixing bin into the mixer, and oil is added to the feed in the mixer through the liquid addition system as needed to make the components evenly mixed to achieve the desired mixing effect uniformity.

The material discharged from the mixer is the finished product, which is directly sent to the packaging process of the finished product for packaging and leaving the floating fish feed extruder production line. When producing pellet feed, the mixed powder is sent to the silo for granulation.

In order to ensure the efficiency of the mixer, maintenance personnel must regularly check and repair the equipment, and regularly test the efficiency of the mixer.

(5)Granulation process

The mixed material is quenched and tempered by magnetic separation from the granulation bin, and then sent to the compression chamber of the floating fish feed extruder, compressed into pellet feed, cooled by a cooling tower, and sieved by a screening equipment to obtain standard granules.

 Magnetic separation equipment must be cleaned regularly to prevent iron impurities from causing damage to the floating fish feed extruder. When quenching and tempering, the amount of floating fish feed extruder steam should be adjusted according to the requirements of the pellet variety, and the ring die (aperture, compression ratio, material, etc.) should be selected according to the requirements of the pellet process quality and pellet temperature and humidity.

According to the variety, indoor temperature and humidity, season and other factors, adjust the cooling tower to achieve qualified pellet temperature and humidity.

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(6)Finished product packaging

The feed made by floating fish feed extruder is weighed from the finished product warehouse by a packaging scale, packed into packaging bags, then labelled and sealed by a packer, and then transported to the warehouse for stacking by a transport vehicle.

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3. Equipment configuration of floating fish feed mill

Mixer → Feeder → Floating feed extruder machine → Conveyor → Multi-layer Oven → Seasoning Line → Cooling Conveyor → Vibrating Screen → Packaging Machine

Since the production of some extruded feeds needs to be pulverized, it can be used: powder mixer → feeder → floating fish feed extruder machine → pulverizer → packaging machine

(1)Powder mixer

Add a certain proportion of water to the raw corn flour, rice flour, soybean flour, fish meal, meat meal, grain flour, additives, etc. and mix well.

  • Main motor power: 3.0kw, 4kw, 5.5kw, 7.5kw
  • Material: Stainless Steel
  • Function: Add a certain proportion of water to the raw corn flour, rice flour, soybean flour, meat flour, grain flour, additives, etc. and mix well.

(2)Feeder

The motor is used for power screw conveying, and the mixed raw materials are conveyed to the feeding hopper of the twin-screw floating fish feed extruder. This equipment is convenient and quick to feed, saves labor, and has high efficiency.

  • Main motor power: 1.1kw
  • Material: Stainless Steel
  • Function: Spiral stirring blade conveying
  • The motor is used for power screw conveying, and the mixed raw materials are conveyed to the feeding hopper of the floating fish feed extruder to ensure convenient and fast feeding.

(3)Twin-screw floating fish feed extruder

The motor is used for power screw conveying, and the mixed raw materials are conveyed to the feeding hopper of the twin-screw floating fish feed extruder. This equipment is convenient and quick to feed, saves labor, and has high efficiency.

  • Main motor power: 22.0kw \30kw \37kw\45kw/55kw/75kw/90kw frequency conversion speed regulation
  • Material: Equipment guard plate stainless steel
  • Function: twin-screw extrusion puffing
  • Output: 100-150kg/h, 200-240kg/h, 500-600kg/h, 600-1000kg/h
  • Rotary cutting motor: 0.75kw frequency conversion speed regulation
  • Oil pump motor: 0.37kw
  • Screw material: 38CrMn Al
  • Screw length: 1280mm/1510mm/1635mm/1920mm
  • Function: This equipment is an floating fish feed extruder, changing the product mold can produce pet feed and aquatic feed of different shapes.

(4)Air blower

The produced feed pellets are transported to the multi-layer drying equipment.

  • Main motor power: 1.1kw/4kw/5.5kw, etc.
  • Material: Stainless Steel
  • Principle: sidewall structure
  • Function: Connect the device to deliver the feed to the oven,

(5)Multi-layer feed dryer (electric type)

The produced feed pellets are transported to the multi-layer drying equipment.

  • Main motor power: 0.75kw
  • Mesh belt material: stainless steel mesh belt (double layer)
  • Principle: chain conveyor.
  • Output: 100-150kg/h/200-240kg/h\500-600kg/h, 600-1000kg/h
  • Function: Baking equipment for puffed feed and puffed food.
  • Adjustable speed of mesh belt motor—frequency conversion speed regulation
  • Oven temperature is adjustable.
  • Oven principle: electric heating tube (power: 27kw\45kw\60kw\90kw)
  • Function: Most of the ovens are electric ovens, the temperature is adjusted between 0-200 degrees through the control cabinet, and the interior is a stainless steel double-layer mesh bag, which reduces the moisture of feed pellets, promotes the curing rate, and increases the shelf life.

(6)Seasoning Machine & Fuel Injector

The oil sprayer sprays oil, food attractants, etc. The seasoning drum includes octagonal drum, cylinder, single-roller, and double-roller seasoning line. According to the output and product properties, the oil is sprayed on the surface of the feed, and the minced meat and spices are sprayed at the same time. , spread evenly.

 After this floating fish feed extruder line process, the burrs and burrs on the surface of the feed pellets can also be removed to make the surface of the feed pellets smoother.

  • Main motor total power: 0.74 kw
  • Material: Stainless Steel Skirt, Food Grade Belt
  • Principle: sidewall structure
  • Output: 100-150kg/h,
  • Function: connect device

(7)Oil pump

  • Motor power: 0.37kw
  • Device size: 1.0*0.7*0.9
  • Material: Stainless Steel
  • Output: 100-500kg/h, 200-240kg/h, 500-600kg/h, 600-1000kg/h
  • This equipment contains an oil barrel, and an electric heating tube is installed in it to keep the oil temperature at about 60 degrees.
  • The nozzle of this floating fish feed extruder line equipment is fixed on the top of the middle-extracting seasoning machine.

(8)Main motor

  • Power: 0.37kw
  • Device size: 2.3*0.8*1.5
  • Material: Stainless Steel
  • Principle: tumbling
  • Output: 100-150kg/h
  • Function: Seasoning mixing equipment for extruded fish feed. The oil sprayer sprays oil, attractants, etc. The seasoning cylinder includes octagonal cylinder, cylinder, single-drum lifting, and double-drum seasoning line. It is configured according to the output and product properties. Spray on the surface of the feed, at the same time spray the minced meat and spices, and spread evenly.

(9)Cooling and conveying

Reduce the temperature of the surface of the dried feed pellets, promote the coagulation of grease, reduce the temperature of the pellets, and facilitate packaging.

(10)Vibrating screen

Sieve off excess external material and pellets at the end of the year to ensure the quality and reuse of raw materials.

 (11)Packaging machine

Manual packaging and automatic packaging are available for different specifications.

  • RICHI Service
  • Provide comprehensive floating fish feed extruder plant project planning and design services.
  • Provide floating fish feed extruder debugging and technical training services.
  • Provide basic formula and technical support.
  • Provide floating fish feed extruder buyers with 1-year warranty and long-term technical services .
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