Vacuum Spraying Machine
Vacuum spraying technology is currently widely used in medium and large aquatic feed pellet mills and pet food factories.
Feed spraying machine is used to spray a certain amount of oil, enzyme preparation, vitamin, antioxidant, amino acid and other liquids on the surface and inside of feed particles. It is used to add further oil or heat-sensitive materials to the materials after extrusion and granulation. It is suitable for powder, granules, crushed feed, extruded feed granules. Its main function is to improve the palatability and nutritional content of feed. It is especially suitable for processing nutritious aquatic feed and pet food.
The spraying machines we produce use the independently developed vacuum spraying technology and are currently widely used in large fish feed production lines.
+86 150 9316 3243
RICHI MACHINERY
How Does The Vacuum Spraying Machine Work?
First, the spray tank is evacuated and the air in the micropores of the feed particles is expelled. Next, the nozzle sprays the liquid into the tank while the feed is mixed. The feed particles are evenly coated and the micropores are sealed. The shear forces between the feed particles must be very small during mixing so that the particles are fully in contact with the droplets.
Finally, the pressure of the spray tank is compensated to release the vacuum state. The external pressure of the feed particle liquid film is greater than its internal pressure, and the pressure difference causes the oil to be pressed into the micropores.
RICHI MACHINERY
Structural features of Vacuum Spraying Machine
- Stainless steel material. The vacuum spraying machine is made of stainless steel with high corrosion resistance. It is used to spray various heat-sensitive substances on the surface of dried feed particles to improve the nutritional value of the feed.
- High control precision: batch spraying, particle scale weighing, high precision control, standard double-drum liquid scale to ensure accurate injection amount, and double oil pump configuration to ensure the speed and accuracy of injection.
- Fully automatic system. The oil injection ratio is set, and the computer PLC automatically matches the oil and materials; the system automatically stops spraying when there is no material, to prevent waste and pollution.
- The new spiral rotor and discharge door structure can minimize the particle breakage rate and residual rate. The precise step-by-step vacuum release system is adopted, and the spraying effect is controllable.
- Closed spraying, energy saving and environmental protection: closed batch spraying, zero oil mist overflow, reducing grease waste, saving costs, and improving the factory production environment.
- The purchased parts of the entire vacuum spraying system are all world-class brands with stable and reliable quality.
- Advanced control systems and precise spraying technology enable precise control of spraying speed, spraying volume and spraying uniformity, which not only ensures the high quality of feed, but also improves production efficiency and reduces production costs.
RICHI MACHINERY
Vacuum Spraying Machine Can Be Customized
Our vacuum spraying machine are generally used in feed production lines, such as common fish feed production lines, etc. Therefore, we will customize turnkey feed production projects and the vacuum spraying machine used in the projects according to customer needs.
RICHI MACHINERY
Advantages of Vacuum Spraying Machine
Feed spraying technology has become a normalized process in the feed production process. More and more feed producers choose to use our vacuum sprayer with a wide range of liquid addition and strong formula adaptability. The main reasons are as follows:
- Wide range of applications. This vacuum spraying machine is suitable for grease spraying of various animal feed pellets, such as floating aquatic feed for tilapia, eel, etc., and sinking aquatic feed for salmon, lobster, crab, etc.
- The amount of liquid components added is greatly increased, and the amount of oil added can reach 30%-40%.
- The liquid component is not easily peeled off even after violent collisions between particles. Without affecting the solidity of the particles, the oil content of the fish feed is greatly increased and the cost is reduced.
- This machine is suitable for adding heat-sensitive powder and liquid trace ingredients, including enzymes, growth promoters, antibiotics, vitamins, oils, active ingredients, colorants, amino acids, plant extracts, etc. It is particularly suitable for the production of pellet feed and extruded feed.
- Protect the effective activity of heat-sensitive components in feed, reduce the loss of nutrients, increase the amount of liquid added, and ensure low-cost and high-quality production.
- The order and volume of additives can be adjusted at any time according to the changes in the formula, which has a good effect on improving the appearance and density of the granular materials.
Can’t Find The Vacuum Spraying Machine You Want?
Contact Us To Customize For You！
RICHI MACHINERY
The Main Factors Affecting Fuel Injection Quality
In the actual production process, in addition to the quality of the vacuum spraying machine, the following factors mainly affect the final spraying effect:
01 Temperature
If the scale of feed productiGenerally speaking, the density of liquid increases with the increase of temperature, so the temperature of the liquid must be controlled to keep the oil at an appropriate viscosity and to easily penetrate into the micropores of the pellets; in addition, when the temperature of the pellets is low, the spray volume can reach 5% of the bulk density of the pellets.
02 Particle size and hardness of feed pellets
The extruded feed pellets must have enough micropores to absorb the oil. Large feed particles make it more difficult to spray the oil onto the surface, and the surface uniformity is poor. On the contrary, small feed pellets can be sprayed evenly more easily.
03 Liquid addition amount
The absorption rate of fish feed to liquid is the main influencing factor. The liquid is generally less than 570ml (about 0.19% of the feed amount). Small amount of liquid will cause uneven spraying. The solution is to reduce the spraying speed or increase the amount of liquid. The amount of liquid must be determined through experiments.
04 Droplet size
In order to make the liquid spray more uniform, the liquid is composed of a large number of small droplets. However, droplets that are too small cannot be sprayed evenly on the feed surface, eventually causing losses. Therefore, the structure of the fuel injection system is very important, and its droplet size can meet the standard area.
RICHI MACHINERY
Vacuum Spraying Machine in Workshop
RICHI MACHINERY
You May Also Like
Ultrafine grinder is an important equipment for aquatic feed production line and pet food production line. If you want to produce high-end aquatic feed, ultrafine grinder is an indispensable equipment. The feed production line composed of ultrafine grinder and mixer, cooler, dryer, sprayer, packang equipment, etc. can produce aquatic feed that meets the breeding needs of all farmers.
In addition to ultrafine grinder, we can provide custom plan designs and turnkey feed production projects for aquaculture farms and feed production plants.
