CN116892814A - Feed cooling equipment and cooling method thereof - Google Patents

Abstract

The invention provides a feed cooling equipment and a cooling method thereof. The feed cooling equipment includes a plurality of feed cooling tanks, a filtering device, a humidification module and a cooling module. The cooling module is used to transport cold air to the plurality of feed cooling tanks; each Feed cooling tanks all include a tank body with a stirring device; a cooling pipe is fixed on the inner wall of the tank, and the filtering equipment is used to filter out impurities and odors in the air; the humidification module humidifies the cooling air to obtain The air with a certain temperature and humidity is used to cool and humidify the feed in the tank, avoiding the occurrence of feed mold caused by excessive internal temperature of the feed, extending the shelf life of the feed, and at the same time increasing the moisture content of the feed from 8-9% to 10‑11%, improving the input-output ratio of production.

Description

Feed cooling equipment and cooling method thereof

Technical field

The present invention relates to the technical field of feed cooling, and in particular to a feed cooling equipment and a cooling method thereof.

Background technique

Feed is a general term for the food of animals raised by everyone. In a relatively narrow sense, general feed mainly refers to the food of animals raised in agriculture or animal husbandry. Feed includes soybeans, soybean meal, corn, fish meal, amino acids, mixed meal, and whey powder. , oil, meat and bone meal, grains, feed additives and other more than ten varieties of feed raw materials. In the feed production process on the market today, automated production needs to be carried out in processing workshops according to different outputs. In the production process of feed processing workshops, especially During the hot summer months from July to September, the temperature in the feed processing workshop is high, which leads to high feed temperature and slow cooling after the feed is produced. This can cause problems such as moldy feed and low feed moisture, which greatly shortens the shelf life of the feed and reduces production investment. output ratio.

Contents of the invention

In view of the above-mentioned problems in the prior art, the present invention aims to provide a feed cooling equipment and a cooling method thereof, which solves the problem of high feed temperature, slow cooling, and slow cooling of the feed produced in the existing feed processing workshop due to the lack of cooling equipment. This causes the feed to become moldy and shortens the shelf life of the feed.

In order to achieve the above-mentioned object of the invention, the technical solutions adopted by the present invention are as follows:

A feed cooling device is provided, which includes a plurality of feed cooling tanks and a cooling module, and the cooling module is used to deliver cold air to the plurality of feed cooling tanks;

Each feed cooling tank includes a tank body, and a stirring device is provided on the tank body. The stirring device includes a stirring motor arranged at the bottom of the tank body. The output shaft of the stirring motor is connected to a stirring shaft arranged inside the tank body. The stirring shaft is arranged along the The center line of the tank is set vertically, and multiple stirring blades are spaced on the stirring shaft;

A cooling pipe is fixed on the inner wall of the tank. The cooling pipe spirals upward along the height direction of the tank. The top of the cooling pipe is a closed structure. The bottom end of the cooling pipe passes through the tank wall and is connected to the cooling module through a pipe; cooling Multiple gas nozzles are provided at intervals on the tube;

The top of the tank is provided with an air outlet channel, and a feed filter is provided in the air outlet channel.

Further, a feed port is provided on the top of each tank, and feed enters the tank through the feed port;

The inner bottom surface of the tank body has an inclined structure, and a discharge port is provided at the bottom of the tank body. The discharge port is located on the low side of the bottom surface of the tank body.

Further, the gas injection directions of the plurality of gas nozzles are all oriented toward the center line of the tank, and the angle between the gas injection direction of each gas nozzle and the vertical direction is 30° to 45°.

Further, the cooling module includes a blower assembly and a cooling assembly that are interconnected;

The blower assembly includes a blower, and the blower is connected to the cooling assembly through a duct;

The cooling component is used to cool the air sent by the blower and deliver the cooled air to the tank.

Further, a filtering device is provided between the blower assembly and the cooling assembly. The filtering equipment includes a filter box. A filter layer is provided in the filter box. The filter layer includes a quartz sand layer, an activated carbon layer and a filter core layer;

An installation notch is provided on the outer wall of the filter box, and a fixed buckle is provided at the corresponding position of the front projection of the installation notch; the filter layer passes through the installation notch and is installed in the filter box, and the bottom of the filter layer is connected to the fixed buckle.

Further, the cooling assembly includes a cooling cavity, and both ends of the cooling cavity are respectively connected to the blower and the cooling pipe through pipes;

A vortex tube is provided on the cooling cavity, and a tangential inlet is provided on the wall of the vortex tube, and the tangential inlet is connected to the high-pressure gas;

A hot air duct and a cold air duct are respectively provided at both ends of the vortex tube. The hot air duct discharges the hot gas in the vortex tube to the outside. The cold air duct has a curved spiral structure and is arranged on the outer wall of the cooling cavity.

Further, a humidification module is provided between the cooling cavity and the tank. The humidification module includes a humidification cavity. A sealing partition is provided in the humidification cavity. The sealing partition is used to divide the humidification cavity into an upper cavity and a lower cavity. ;

Both sides of the upper cavity are connected to the cooling cavity and cooling pipes through pipes;

The lower cavity is filled with water, and an ultrasonic oscillator is provided in the water. The ultrasonic oscillator is used to vibrate the water into water mist;

A mist outlet pipe is provided on the sealed partition, and the mist outlet pipe is used to transport the water mist in the lower cavity to the upper cavity.

Further, the material cooling equipment also includes a control module, and the control module includes a controller;

A temperature sensor is provided in the cooling cavity; a humidity sensor is provided in the humidification cavity;

The stirring motor, blower, ultrasonic oscillator, temperature sensor and humidity sensor are all electrically connected to the controller.

Further, the air temperature in the cooling cavity is 8-10°C, and the air humidity in the humidification cavity is 40-60%.

The present invention also provides a cooling method for feed cooling equipment, which includes:

Step 1. Ground preparation: Before installing the feed cooling equipment, prepare the ground in the feed workshop to ensure that the ground is level;

Step 2. Equipment installation: Install the feed cooling equipment on the level ground. Multiple feed cooling tanks are installed indoors. The blower and hot air duct in the cooling module are installed outside the feed processing workshop. Once the installation is completed, set the cooling equipment parameters: The cooling processing time of the feed cooling tank is 3-5h, the air volume of the blower is 20000m ³ /h, the cooling temperature of the cooling module is 8-10°C, and the air humidity of the humidification module is 40-60%;

Step 3. Fresh air filtration: The filtration equipment filters the air sent by the blower;

Step 4. Cooling and humidification: The cooling module cools down the filtered air. After the air in the cooling module reaches the specified temperature, it is transported to the humidification module to humidify the cooled air;

Step 5. Centrifugal air supply: After the cooling and humidifying treatment of the air is completed, the air is pressurized and transported through the blower to send the processed air into the cooling tube;

Step 6. Cooling: Start the stirring motor, which stirs the feed in the tank through the stirring shaft and stirring blades. At the same time, the processed air is sprayed out through multiple gas nozzles to cool down and humidify the feed in the tank. Process until the cooling treatment time of the feed cooling tank is reached, and then the cooling and humidifying treatment of the feed is completed.

The beneficial effects of the present invention are:

1. The feed cooling equipment in the present invention is provided with multiple feed cooling tanks and cooling modules. The feed cooling tank is used to store the processed feed, and the cooling module is used to transport cooling air to the multiple feed cooling tanks to achieve The feed in the tank is cooled to avoid feed mold caused by excessive internal temperature of the feed, and prolongs the shelf life of the feed.

2. The stirring device in the feed cooling tank and the setting of multiple gas nozzles on the cooling pipe. During the cooling process of the feed, the stirring device stirs the feed in the tank to quickly cool down the inside of the feed; at the same time, multiple gas nozzles The feed is sprayed with cooling air during mixing to further improve the cooling effect of the feed and shorten the cooling time to achieve rapid cooling of the feed.

3. The feed cooling equipment in the present invention is equipped with a humidification module. The humidification module is used to humidify the cooling air, thereby humidifying the cooling feed, increasing the moisture content of the feed from 8-9% to 10-11%, and improving production. input-output ratio.

4. By arranging a feed port and a discharge port on the tank, it is convenient for feed to be put into and discharged from the cooling tank. At the same time, the bottom of the tank is set as an inclined structure, and the discharge port is set on the low side of the bottom surface of the tank, so that The feed is discharged more cleanly and thoroughly, avoiding the problem of contamination of the next batch of feed due to incomplete discharge of feed from the tank.

5. There is an air outlet channel on the top of the tank, and a feed filter is installed in the air outlet channel. The setting of the air outlet channel can balance the air pressure in the tank and avoid excessive air pressure in the tank; the setting of the feed filter can avoid During the cooling process of the feed, the feed leaks out of the air outlet channel, causing a waste of feed.

6. The gas injection directions of multiple gas nozzles are all towards the center line of the tank. The angle between the gas injection direction of each gas nozzle and the vertical direction is 30° to 45°; the gas ejected by multiple gas nozzles It can achieve the effect of blowing air on the feed during the mixing process, thereby increasing the contact area between the cooling air and the feed, further improving the cooling effect of the feed and shortening the cooling time.

7. The feed cooling equipment in the present invention is equipped with a filtering device, which filters impurities and odors in the air to avoid contamination of the feed due to impurities and odors in the air entering the feed cooling tank, and improves the quality of the feed. Production quality.

8. The cooling process of the feed cooling equipment in the present invention is automatically carried out through the control module, without the need for workers to supervise, saving the labor cost of the production enterprise.

Description of the drawings

Figure 1 is a schematic structural diagram of the feed cooling equipment.

Figure 2 is a schematic diagram of the internal structure of a single feed cooling tank.

Figure 3 is a schematic structural diagram of a cross-section of the filtering equipment.

Figure 4 is a schematic structural diagram of the cooling assembly.

Figure 5 is a schematic structural diagram of the humidification module.

Figure 6 is a flow chart of the cooling method of the feed cooling equipment.

Among them, 1. Feed cooling tank; 101. Tank body; 102. Cooling pipe; 103. Air outlet channel; 104. Feed port; 105. Discharge port; 2. Cooling module; 201. Blower assembly; 202. Cooling assembly; 2021. Cooling cavity; 2022. Vortex tube; 2023. Tangential inlet; 2024. Hot air duct; 2025. Cold air duct; 2026. Temperature sensor; 3. Stirring device; 301. Stirring motor; 302. Stirring shaft; 303. Stirring blade; 4. Gas nozzle; 5. Feed filter; 6. Filtration equipment; 601. Filter box; 602. Filter layer; 603. Installation gap; 604. Fixed buckle; 7. Humidification module; 701. Humidification chamber ; 702. Sealing partition; 703. Upper cavity; 704. Lower cavity; 705. Ultrasonic oscillator; 706. Fog outlet pipe; 707. Humidity sensor.

Detailed ways

The specific embodiments of the present invention are described below to facilitate those skilled in the art to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the technical field, as long as various changes These changes are obvious within the spirit and scope of the invention as defined and determined by the appended claims, and all inventions and creations utilizing the concept of the invention are protected.

As shown in Figures 1 to 2, the present invention provides a feed cooling equipment, which includes a plurality of feed cooling tanks 1 and a cooling module 2. The cooling module 2 is used to transport cooling air to the plurality of feed cooling tanks 1 to achieve The feed in the tank 101 is cooled to avoid feed mold caused by excessive internal temperature of the feed, and prolongs the shelf life of the feed.

As shown in Figure 2, specifically, as a specific arrangement method of the feed cooling tank 1, each feed cooling tank 1 includes a tank body 101. The tank body 101 is provided with a stirring device 3. The stirring device 3 includes a tank body 101. There is a stirring motor 301 at the bottom. The output shaft of the stirring motor 301 is connected to a stirring shaft 302 arranged inside the tank 101. The stirring shaft 302 is arranged vertically along the centerline direction of the tank 101. There are multiple stirring shafts 302 spaced apart. Stirring blade 303.

A cooling pipe 102 is fixedly installed on the inner wall of the tank 101. The cooling pipe 102 spirally climbs along the height direction of the tank 101. The top of the cooling pipe 102 is a closed structure, and the bottom end of the cooling pipe 102 passes through the tank wall of the tank 101. The pipeline is connected to the cooling module 2; a plurality of gas nozzles 4 are arranged at intervals on the cooling pipe 102.

During the cooling process of the feed, the stirring device 3 stirs the feed in the tank 101 to quickly cool down the inside of the feed; at the same time, multiple gas nozzles 4 spray cooling air on the feed during mixing to further improve the cooling effect of the feed. And shorten the cooling time to achieve rapid cooling of the feed.

An air outlet channel 103 is provided on the top of the tank 101, and a feed filter 5 is provided in the air outlet channel 103. The air outlet channel 103 can balance the air pressure in the tank 101 to avoid excessive air pressure in the tank 101; the feed filter 5 can prevent feed from leaking out of the air outlet channel 103 during the cooling process of the feed, causing waste of feed.

Preferably but not limiting, the top of each tank 101 is provided with a feed port 104, and feed enters the tank 101 through the feed port 104; the inner bottom surface of the tank 101 is an inclined structure, and the bottom of the tank 101 is provided with a discharge port. 105. The discharge port 105 is located on the low side of the inner bottom surface of the tank 101. The feed port 104 and the discharge port 105 can facilitate the input and discharge of feed into the cooling tank. At the same time, the bottom of the tank 101 is set to an inclined structure, and the feed port 105 is set on the low side of the inner bottom surface of the tank 101, so that the feed can be discharged more efficiently. In order to be clean and thorough, avoid the problem of contaminating the next batch of feed due to incomplete discharge of the feed from the tank 101.

As a preferred installation method of the gas nozzle 4, the gas injection directions of the multiple gas nozzles 4 are all facing the centerline direction of the tank 101, and the angle between the gas injection direction of each gas nozzle 4 and the vertical direction is 30° to 45°. °. The gas ejected from the multiple gas nozzles 4 can blow the feed upward during the mixing process, thereby increasing the contact area between the cooling air and the feed, further improving the cooling effect of the feed and shortening the cooling time.

As shown in Figure 1, as a specific arrangement of the cooling module 2, the cooling module 2 includes a blower assembly 201 and a cooling assembly 202 that are connected to each other; the blower assembly 201 includes a blower, and the blower is connected to the cooling assembly 202 through a pipe; the cooling assembly 202 is used for The air sent by the blower is cooled, and the cooled air is transported into the tank 101 .

As shown in Figure 4, as a specific arrangement of the cooling assembly 202, the cooling assembly 202 includes a cooling cavity 2021. Both ends of the cooling cavity 2021 are connected to the blower and the cooling pipe 102 through pipes respectively; the cooling cavity 2021 is provided with a vortex Tube 2022, a tangential inlet 2023 is provided on the wall of the vortex tube 2022, and the tangential inlet 2023 is connected to the high-pressure gas; a hot air duct 2024 and a cold air duct 2025 are respectively provided at both ends of the vortex tube 2022, and the hot air duct 2024 will vortex the vortex. The hot gas in the tube 2022 is discharged to the outside. The cold air tube 2025 has a curved spiral structure, and the cold air tube 2025 is arranged on the outer wall of the cooling cavity 2021.

After the high-pressure gas enters the tangential inlet 2023 on the vortex tube 2022, the air flow generates a vortex to separate the cold and hot air flows. The cold air flow enters the cold air pipe 2025 to cool the cooling cavity 2021 and the air in the cooling cavity 2021. The hot air flow can be led to the outdoors through the hot air duct 2024; the cooling temperature of the cold air duct 2025 can be adjusted by adjusting the flow rate of the high-pressure gas. The cold air duct 2025 has a curved spiral structure and is coiled to the outer wall of the cooling cavity 2021 to increase the cold air flow. The contact area between the tube 2025 and the outer wall of the cooling cavity 2021 thereby improves the cooling effect.

Specifically, as shown in Figures 1 and 3, a filtering device 6 is disposed between the blower assembly 201 and the cooling assembly 202. The filtering device 6 includes a filter box 601, and a filter layer 602 is disposed in the filter box 601. The filter layer 602 includes quartz. Sand layer, activated carbon layer and filter layer.

An installation notch 603 is provided on the outer wall of the filter box 601, and a fixed buckle 604 is provided at the corresponding position of the front projection of the installation notch 603; the filter layer 602 passes through the installation notch 603 and is installed in the filter box 601, and the bottom of the filter layer 602 is in contact with the fixed buckle. The buckles 604 are connected to realize the fixation of the filter layer 602 and the filter box 601. The filtering device 6 filters impurities and odors in the air to avoid contaminating the feed due to impurities and odors in the air entering the feed cooling tank 1, thereby improving the production quality of the feed.

Specifically, as shown in Figures 1 and 5, a humidification module 7 is provided between the cooling cavity 2021 and the tank 101. The humidification module 7 includes a humidification cavity 701, and a sealing partition 702 is provided in the humidification cavity 701. The sealing The partition 702 is used to divide the humidification cavity 701 into an upper cavity 703 and a lower cavity 704; both sides of the upper cavity 703 are connected to the cooling cavity 2021 and the cooling pipe 102 respectively through pipes; the lower cavity 704 is filled with Water, an ultrasonic oscillating plate 705 is provided in the water, and the ultrasonic oscillating plate 705 is used to vibrate the water into water mist; the sealing partition 702 is provided with a mist outlet pipe 706, and the mist outlet pipe 706 is used to remove the water mist in the lower cavity 704 Transported to the upper cavity 703.

The humidification module 7 is used to humidify the cooling air, thereby humidifying the cooling feed, increasing the feed moisture from 8-9% to 10-11%, and improving the input-output ratio of production.

The feed cooling equipment also includes a control module, which includes a controller; a temperature sensor 2026 is provided in the cooling cavity 2021; a humidity sensor 707 is provided in the humidification cavity 701; a stirring motor 301, a blower, an ultrasonic oscillator 705, and a temperature sensor 2026 and humidity sensor 707 are electrically connected to the controller; the cooling processing time of the feed cooling tank 1 is 3-5h, the air volume of the blower is 20000m ³ /h, the cooling temperature of the cooling module 2 is 8-10°C, and the air in the humidifying module 7 Humidity is 40-60%. The cooling process of the feed cooling equipment is automated through the control module, without the need for workers to supervise, saving the labor cost of the production enterprise.

The connection relationship and type selection between the electrical components in this solution are existing mature technologies, so the circuit structure and working principle between the electrical components will not be described in detail here.

As shown in Figure 6, the present invention also provides a cooling method for feed cooling equipment, which includes:

Step 1. Ground preparation: Before installing the feed cooling equipment, prepare the ground in the feed workshop to ensure that the ground is level;

Step 2. Equipment installation: Install the feed cooling equipment on the level ground. Multiple feed cooling tanks 1 are installed indoors. The blower and hot air pipe 2024 in the cooling module 2 are installed outside the feed processing workshop. Once the installation is completed; set up cooling Equipment parameters: the cooling processing time of the feed cooling tank 1 is 3-5h, the air volume of the blower is 20000m ³ /h, the cooling temperature of the cooling module 2 is 8-10°C, and the air humidity of the humidification module 7 is 40-60%;

Step 3. Fresh air filtration: The filtration device 6 filters the air sent by the blower;

Step 4. Cooling and humidification: The cooling module 2 cools down the filtered air. After the air in the cooling module 2 reaches the specified temperature, it is transported to the humidification module 7 to humidify the cooled air;

Step 5. Centrifugal air supply: After the cooling and humidifying treatment of the air is completed, the air is pressurized and transported through the blower to send the processed air into the cooling tube 102;

Step 6. Cooling: Start the stirring motor 301. The stirring motor 301 stirs the feed in the tank 101 through the stirring shaft 302 and the stirring blades 303. At the same time, the processed air is sprayed out through the multiple gas nozzles 4 to stir the tank 101. The feed in the feed is cooled and humidified until the cooling time of the feed cooling tank 1 is reached, and then the cooling and humidifying treatment of the feed is completed.

Claims (10)

1. A feed cooling equipment, characterized in that it includes a plurality of feed cooling tanks and a cooling module, the cooling module is used to deliver cold air to a plurality of the feed cooling tanks; Each feed cooling tank includes a tank body, a stirring device is provided on the tank body, the stirring device includes a stirring motor arranged at the bottom of the tank body, and the output shaft of the stirring motor is connected to a stirring device arranged inside the tank body. A stirring shaft, the stirring shaft is arranged vertically along the centerline direction of the tank, and a plurality of stirring blades are arranged at intervals on the stirring shaft; A cooling pipe is fixedly installed on the inner wall of the tank. The cooling pipe spirally climbs along the height direction of the tank. The top of the cooling pipe is a closed structure. The bottom end of the cooling pipe passes through the tank wall and is connected to the cooling module through a pipe. ; Multiple gas nozzles are provided at intervals on the cooling tube; The top of the tank is provided with an air outlet channel, and a feed filter is provided in the air outlet channel. 2. The feed cooling equipment according to claim 1, characterized in that a feed port is provided on the top of each tank, and feed enters the tank through the feed port; The inner bottom surface of the tank body has an inclined structure, and a discharge port is provided at the bottom of the tank body. The discharge port is located on the low side of the bottom surface of the tank body. 3. The feed cooling equipment according to claim 2, characterized in that the gas injection directions of the plurality of gas nozzles are all towards the centerline direction of the tank, and the gas injection direction of each gas nozzle is equal to the vertical direction. The angle between them is 30°~45°. 4. The feed cooling equipment according to claim 3, characterized in that the cooling module includes a blower assembly and a cooling assembly that are interconnected; The blower assembly includes a blower communicating with the cooling assembly through a duct; The cooling component is used to cool the air sent by the blower and deliver the cooled air to the tank. 5. The feed cooling equipment according to claim 4, characterized in that a filtering device is provided between the blower assembly and the cooling assembly, the filtering equipment includes a filtering box, and a filtering layer is provided in the filtering box, so The filter layer includes a quartz sand layer, an activated carbon layer and a filter core layer; An installation notch is provided on the outer wall of the filter box, and a fixed buckle is provided at a corresponding position of the front projection of the installation notch; the filter layer is arranged in the filter box through the installation notch, and the bottom of the filter layer is connected to the fixed buckle. 6. The feed cooling equipment according to claim 5, characterized in that the cooling assembly includes a cooling cavity, and both ends of the cooling cavity are respectively connected to the blower and the cooling pipe through pipes; A vortex tube is provided on the cooling cavity, and a tangential inlet is provided on the wall of the vortex tube, and the tangential inlet is connected to the high-pressure gas; A hot air duct and a cold air duct are respectively provided at both ends of the vortex tube. The hot air duct discharges the hot gas in the vortex tube to the outside. The cold air duct has a curved spiral structure. The cold air duct is arranged on the outer wall of the cooling cavity. 7. The feed cooling equipment according to claim 6, characterized in that a humidification module is provided between the cooling cavity and the tank, the humidification module includes a humidification cavity, and a humidification module is provided in the humidification cavity. A sealing partition used to divide the humidification chamber into an upper chamber and a lower chamber; Both sides of the upper cavity are respectively connected to the cooling cavity and the cooling pipe through pipes; The lower cavity is filled with water, and an ultrasonic oscillator is provided in the water. The ultrasonic oscillator is used to vibrate the water into water mist; A mist outlet pipe is provided on the sealing partition, and the mist outlet pipe is used to transport the water mist in the lower cavity to the upper cavity. 8. The feed cooling equipment according to claim 7, further comprising a control module, the control module comprising a controller; A temperature sensor is provided in the cooling cavity; a humidity sensor is provided in the humidification cavity; The stirring motor, blower, ultrasonic oscillator, temperature sensor and humidity sensor are all electrically connected to the controller. 9. The feed cooling equipment according to claim 8, characterized in that the air temperature in the cooling cavity is 8-10°C, and the air humidity in the humidifying cavity is 40-60%. 10. A cooling method for feed cooling equipment according to claim 9, characterized in that it includes: Step 1. Ground preparation: Before installing the feed cooling equipment, prepare the ground in the feed workshop to ensure that the ground is level; Step 2. Equipment installation: Install the feed cooling equipment on the level ground. Multiple feed cooling tanks are installed indoors. The blower and hot air duct in the cooling module are installed outside the feed processing workshop. Once the installation is completed, set the cooling equipment parameters: The cooling processing time of the feed cooling tank is 3-5h, the air volume of the blower is 20000m ³ /h, the cooling temperature of the cooling module is 8-10°C, and the air humidity of the humidification module is 40-60%; Step 3. Fresh air filtration: The filtration equipment filters the air sent by the blower; Step 4. Cooling and humidification: The cooling module cools down the filtered air. After the air in the cooling module reaches the specified temperature, it is transported to the humidification module to humidify the cooled air; Step 5. Centrifugal air supply: After the cooling and humidifying treatment of the air is completed, the air is pressurized and transported through the blower to send the processed air into the cooling tube; Step 6. Cooling: Start the stirring motor, which stirs the feed in the tank through the stirring shaft and stirring blades. At the same time, the processed air is sprayed out through multiple gas nozzles to cool down and humidify the feed in the tank. Process until the cooling treatment time of the feed cooling tank is reached, and then the cooling and humidifying treatment of the feed is completed.