Feed low-temperature oil spraying machine and control method

Abstract

The invention relates to the technical field of feed preparation, and discloses a feed low-temperature oil spraying machine and a control method.The feed low-temperature oil spraying machine comprises a box body, an oil spraying device and a control system, the upper side of the box body is provided with an input pipe for inputting conditioned materials, and the lower side of the box body is provided with an output pipe for outputting the materials for puffing; the material pressing assembly comprises a driving assembly and two material pressing cylinders which are transversely arranged in a spaced mode, a material passing channel is formed in the radial direction of the two material pressing cylinders, and the driving assembly is used for driving the two material pressing cylinders to rotate downwards and reversely so as to abut against the materials and drive the materials to flow into the output pipe; the oil spraying assembly comprises an oil spraying pipe and a temperature control assembly for controlling the temperature of the grease in the oil spraying pipe to be 40-60 DEG C, and the oil spraying pipe is provided with a spraying head for spraying the grease towards the peripheral wall of the material pressing barrel. Low-temperature oil spraying is performed after tempering and before puffing, so that the distribution uniformity and adhesion firmness of grease are remarkably improved, the water resistance and water stability of the aquatic feed are enhanced, the nutrition and flavor of the grease are reserved by a low-temperature process, and the nutritional value of the feed is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of feed processing, in particular to a feed low-temperature oil sprayer and a control method thereof. Background Art

[0002] In the field of feed processing, oils and fats are often added during feed production to improve the nutritional value, palatability, and stability in water. In existing technologies, oil spraying is primarily performed after the feed has undergone puffing. However, this post-puffing oil spraying adheres only to the surface of the feed, making the resulting feed prone to dispersion and precipitation in water. This results in poor water resistance and stability in aquatic feeds, resulting in poor performance in water. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a low-temperature feed oil sprayer that performs low-temperature oil spraying after conditioning and before puffing, significantly improving the uniformity of oil distribution and adhesion, and effectively preventing dispersion in water. The low-temperature process retains the nutritional value and flavor of the oil, making it particularly suitable for heat-sensitive ingredients, significantly improving the nutritional value of the feed. At the same time, it significantly enhances the water resistance and stability of aquatic feed, improving the performance of the feed in water, and has significant technical and economic value.

[0004] The present invention also provides a control method applied to the above feed low-temperature oil sprayer.

[0005] The feed low-temperature oil sprayer according to the present invention comprises: A box body, wherein an input pipe is provided on the upper side of the box body for inputting the quenched and tempered material, and an output pipe is provided on the lower side of the box body for outputting the material for expansion; A material pressing assembly is provided in the box body, comprising a driving assembly and two laterally spaced pressing cylinders, wherein radial directions of the two pressing cylinders form a material passing channel, and the driving assembly is used to drive the two pressing cylinders to rotate downward in opposite directions to press the material and drive the material to flow into the output pipe; An oil spray assembly is arranged in the box body, and the oil spray assembly includes an oil spray pipe and a temperature control assembly. The temperature control assembly is used to control the temperature of the grease in the oil spray pipe to 40°C ~ 60°C. The oil spray pipe is provided with a nozzle, and the nozzle sprays the grease toward the peripheral wall of the pressing barrel to drive the grease to be adsorbed on the material.

[0006] The feed low-temperature oil sprayer according to the present invention has at least the following beneficial effects: low-temperature oil spraying is performed on the material after conditioning and before puffing, which firstly effectively solves the problem of uneven oil distribution in traditional oil spraying after puffing, and adopts a unique reverse rotation extrusion design of the pressing barrel to make the oil evenly distributed on the material, avoiding local enrichment or omission, and significantly improving the quality consistency of the feed; secondly, the temperature control component strictly controls the oil temperature in the low temperature range of 40℃-60℃, greatly reducing the risk of oil oxidation and rancidity caused by high temperature environment, not only maintaining the nutritional components and flavor of the oil, but also helping to retain heat-sensitive functional ingredients such as fish oil and plant essential oils, significantly improving the nutritional value of the feed; in addition, the low-temperature oil sprayer is combined with the machine Mechanical extrusion allows the oil to penetrate deeply into the interior of the material, forming a dense protective layer that significantly enhances the water stability of the finished feed. The finished feed is not easy to disperse and precipitate in water, which greatly improves the water resistance and performance of the aquatic feed in water. In addition, the oil injection process is integrated into a separate box after conditioning and before puffing, avoiding the waste of oil and environmental pollution caused by traditional external oil injection, while simplifying the process flow and improving production efficiency. Finally, this design also reduces the damage to oil nutrients caused by high temperature, and is particularly suitable for adding heat-sensitive nutrients such as unsaturated fatty acids such as DHA and EPA, so that the feed not only has better palatability, but also provides more comprehensive nutritional guarantees for farmed animals, significantly improving the overall quality and market competitiveness of the feed.

[0007] According to the feed low-temperature oil sprayer described in some embodiments of the present invention, the pressing barrel is a hollow structure, the oil spray pipe is placed in the pressing barrel, the nozzle sprays the oil toward the inner surface of the pressing barrel, and the surface of the pressing barrel is a mesh structure to allow the oil to penetrate through to the outer surface and be adsorbed on the material.

[0008] According to the feed low-temperature oil sprayer described in some embodiments of the present invention, the mesh number of the surface of the pressing barrel is greater than or equal to 150.

[0009] According to the feed low-temperature oil sprayer described in some embodiments of the present invention, the box body is also connected to an adjustment component, and the adjustment component is used to adjust the horizontal movement of the two pressing cylinders toward each other or away from each other.

[0010] According to the feed low-temperature oil sprayer described in some embodiments of the present invention, the adjustment component includes an adjustment handle, a screw rod, a first screw seat and a second screw seat, the two pressing barrels are respectively installed on the first screw seat and the second screw seat, the first screw seat and the second screw seat are both slidably arranged on the box body along the horizontal direction, the first screw seat and the second screw seat are respectively screwed with the screw rod in a reverse thread type, and the adjustment handle is connected to and drives the screw rod to rotate, so as to drive the two pressing barrels to move.

[0011] According to the feed low-temperature oil sprayer described in some embodiments of the present invention, a blowing component is provided in the pressing barrel to blow out the oil and / or the material.

[0012] According to the feed low-temperature oil sprayer described in some embodiments of the present invention, the blowing assembly includes a blowing pipe, and the blowing pipe is arranged downward and biased to one side of the feed passage.

[0013] According to the feed low-temperature oil sprayer described in some embodiments of the present invention, the air blowing pipe is used to blow out inert gas.

[0014] According to some embodiments of the present invention, the feed low-temperature oil sprayer further includes a temporary storage tank, the input pipe is provided with an input branch, the output pipe is provided with an output branch, the input end of the temporary storage tank is connected to the output branch, so that the material is input from the box to the temporary storage tank, the output end of the temporary storage tank is connected to the input branch, and can drive the material from the temporary storage tank to be input into the box, the temporary storage tank and the box form a closed loop to drive the material to circulate and attach the grease.

[0015] According to the control method described in the present invention, it is applied to the feed low-temperature oil sprayer described in the present invention; the pressing barrel is a hollow structure, the oil spray pipe is placed in the pressing barrel, the nozzle sprays the grease toward the inner surface of the pressing barrel, and the surface of the pressing barrel is a mesh structure so as to penetrate to the outer surface and adsorb on the material; a blowing component is provided in the pressing barrel to blow out the grease and / or the material; the feed low-temperature oil sprayer also includes a temporary storage tank, the input pipe is provided with an input branch, and the output pipe is provided with an output branch, the input end of the temporary storage tank is connected to the output branch for the material to be input from the box to the temporary storage tank, the output end of the temporary storage tank is connected to the input branch, and can drive the material from the temporary storage tank to be input into the box, the temporary storage tank and the box form a closed loop to drive the material to circulate and attach the grease; The control method comprises the following steps: Input material: the prepared material is input into the box through the input pipe; Oil spraying treatment: After the material is input, the oil spraying pipe sprays the grease toward the pressing barrel, and the material can fall through the material passage. When the two pressing barrels move downward in opposite directions, the grease is attached to the material and drives the material to fall into the output pipe; Circular oil injection: During the oil injection process, the total oil amount N set according to the amount of the material is divided into single oiling amounts. The material is input into the temporary storage tank from the output branch and then into the box from the input branch to drive the material to circulate N times. In each cycle, the material is attached with the single oiling amount of grease; Output material: After circulating oil injection, the material is output from the output pipe to the expansion process.

[0016] The control method according to the present invention has at least the following beneficial effects: it integrates the structural innovation and process optimization of the low-temperature oil sprayer, and achieves precise control of the grease spraying process through cyclic oil spraying and precise temperature control. The cyclic oil spraying design enables the grease to be evenly distributed inside and on the surface of the material, significantly improving the uniform adhesion of the grease. Precise temperature control reduces the risk of oxidation, retains the heat-sensitive nutrients in the grease, and improves the nutritional value of the feed. In addition, the closed-loop circuit and multiple oil attachment control method ensure the accuracy and consistency of grease adhesion, significantly improving the quality and processing efficiency of the feed. This method reduces production costs and the difficulty of equipment maintenance, and is particularly suitable for industrial large-scale production. In addition, it can automatically adjust the oil spray parameters according to different feed formulas, realizing intelligent production, improving production efficiency and product quality stability.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 This is a structural diagram of a low-temperature oil sprayer for feed according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the connection of the adjustment components of the feed low-temperature oil sprayer according to an embodiment of the present invention; Figure 3 Flowchart of the control method applied to the feed low-temperature oil sprayer according to an embodiment of the present invention.

[0019] Description of reference numerals: Box 100; input pipe 110; input branch 111; output pipe 120; output branch 121; Feed channel 201; Pressing cylinder 210; Oil injection pipe 310; nozzle 311; Adjusting handle 410; screw rod 420; first screw seat 430; first rotation hole 431; second screw seat 440; second rotation hole 441; Blowing tube 510; Temporary storage tank 600. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0025] In the field of feed processing, oils and fats are often added during feed production to improve the nutritional value, palatability, and stability in water. In existing technologies, oil spraying is primarily performed after the feed has undergone puffing. However, this post-puffing oil spraying adheres only to the surface of the feed, making the resulting feed prone to dispersion and precipitation in water. This results in poor water resistance and stability in aquatic feeds, resulting in poor performance in water.

[0026] For this reason, Figure 1 and Figure 2 The figure shows the feed low-temperature oil sprayer proposed by the present invention, which includes a housing 100, a material pressing assembly disposed in the housing 100, and an oil spray assembly disposed in the housing 100. Specifically, an input pipe 110 is disposed on the upper side of the housing 100 for inputting the quenched and tempered material, and an output pipe 120 is disposed on the lower side of the housing 100 for outputting the material for expansion. The material pressing assembly includes a drive assembly and two laterally spaced pressure barrels 210. The two pressure barrels 210 form a material passage 201 in the radial direction. The drive assembly is used to drive the two pressure barrels 210 to rotate downward in opposite directions to press the material and drive the material into the output pipe 120. Furthermore, the oil injection assembly includes an oil injection pipe 310 and a temperature control assembly. The temperature control assembly is used to control the temperature of the oil in the oil injection pipe 310 to 40°C to 60°C. The oil injection pipe 310 is equipped with a nozzle 311, which sprays oil toward the peripheral wall of the pressing barrel 210 to drive the oil to adsorb on the material. It should be noted that low-temperature oil injection of the material after conditioning and before puffing effectively solves the problem of uneven oil distribution that exists in traditional post-puffing oil injection. In addition, the unique counter-rotating extrusion design of the pressing barrel 210 ensures that the oil is evenly distributed on the material, avoiding local enrichment or omission, and significantly improving the quality consistency of the feed. Secondly, the temperature control component strictly controls the oil temperature within the low temperature range of 40°C-60°C, significantly reducing the risk of oil oxidation and rancidity caused by high temperature environments. This not only maintains the nutritional content and flavor of the oil, but also helps to retain heat-sensitive functional ingredients such as fish oil and plant essential oils, significantly improving the nutritional value of the feed. In addition, the low-temperature oil spraying combined with mechanical extrusion allows the oil to penetrate deeply into the material, forming a dense protective layer that significantly enhances the water stability of the finished feed. The finished feed is not easy to disperse and precipitate in water, which greatly improves the water resistance and performance of the aquatic feed in water. In addition, the oil spraying process is integrated into the independent box 100 after conditioning and before puffing, avoiding the oil waste and environmental pollution caused by traditional external oil spraying, while simplifying the process flow and improving production efficiency. Finally, this design also reduces the damage to oil nutrients caused by high temperature, and is particularly suitable for adding heat-sensitive nutrients such as unsaturated fatty acids such as DHA and EPA. This not only improves the palatability of the feed, but also provides a more comprehensive nutritional guarantee for farmed animals, significantly improving the overall quality and market competitiveness of the feed.

[0027] Refer again Figure 1In some embodiments of the present invention, the barrel 210 is a hollow structure, the oil spray pipe 310 is placed inside the barrel 210, and the nozzle 311 sprays grease toward the inner surface of the barrel 210. The surface of the barrel 210 is a mesh structure to allow the grease to penetrate through to the outer surface and adsorb on the material. By designing the barrel 210 as a hollow structure and placing the oil spray pipe 310 inside it, directional penetration spraying of grease from the inside to the outside is achieved. This unique structural design allows the grease to be directly sprayed onto the inner surface of the barrel 210 and evenly diffused to the outer surface. Combined with the rotating extrusion effect of the barrel 210, the grease can be adsorbed deeper and more evenly inside and on the surface of the material. Compared with the traditional external spraying method, this internal penetration spraying technology significantly improves the uniformity and firmness of grease adhesion, and avoids the problem of uneven distribution of grease on the surface of the material. At the same time, the mesh structure on the surface of the press barrel 210 not only ensures the effective penetration of grease, but also prevents the material from clogging the spray hole, thereby improving the reliability and continuous operation capability of the equipment. It is particularly suitable for feed production that requires high-uniformity grease adhesion, especially aquatic feed and special feed that have strict requirements on grease distribution. Optionally, the mesh number on the surface of the press barrel 210 is greater than or equal to 150. This fine mesh design greatly increases the surface area and efficiency of grease penetration. It is understandable that the high mesh number structure enables grease to penetrate from the inner surface to the outer surface more quickly and evenly and adsorb on the material, significantly improving the uniformity and depth of grease adhesion. At the same time, the high mesh number structure can also effectively reduce the risk of material residue clogging and falling into the press barrel 210, thereby improving the continuous operation stability and cleaning convenience of the equipment. For example, the size of the crushed material depends on the mesh size of the grinder, which is generally between 100 and 1000 μm. After tempering, the particle size remains essentially unchanged. A 150-mesh screen can intercept particles with a diameter greater than 104 μm. Preferably, the mesh size of the barrel 210 surface is 200, which can intercept particles with a diameter greater than 75 μm, thereby effectively reducing the penetration of material into the barrel 210. This design is particularly suitable for feed materials with high viscosity or fine particles, ensuring that the oil evenly penetrates every particle of the material, avoiding the localized enrichment or omission that can occur with traditional spraying methods. The high-mesh structure also increases the contact area between the oil and the material, enhancing the oil's adhesion and further improving the quality and nutritional value of the feed.

[0028] In some embodiments of the present invention, the box body 100 is connected to an adjustment component, which is used to adjust the horizontal movement of the two pressing barrels 210 toward each other or away from each other. This adjustable design can flexibly adjust the width of the feed channel 201 according to the characteristics of different materials, such as particle size, humidity, viscosity, etc., and can further adjust the size of the extrusion force. In this regard, the equipment can be optimized and adjusted according to different feed formulas and raw material characteristics, which not only ensures that the material is uniformly stressed during the extrusion process, but also avoids material breakage or insufficient oil attachment due to improper pressure. In addition, this design can also flexibly adjust the amount of grease adhesion according to production needs, such as adjusting the width of the feed channel 201 under equal oil spraying, so as to achieve more precise grease addition control of the material passing through the feed channel 201. In some embodiments of the present invention, refer to Figure 2 The adjustment assembly includes an adjustment handle 410, a screw rod 420, a first screw seat 430 and a second screw seat 440. The two pressing barrels 210 are respectively installed on the first screw seat 430 and the second screw seat 440. The first screw seat 430 and the second screw seat 440 are both slidably arranged on the box body 100 in the horizontal direction. The first screw seat 430 and the second screw seat 440 are respectively screwed with the screw rod 420 in a reverse thread type. The adjustment handle 410 is connected and drives the screw rod 420 to rotate, thereby driving the two pressing barrels 210 to move. Among them, the first screw seat 430 is provided with a first rotating hole 431, and the connecting shaft at the end of one pressing barrel 210 is rotatably passed through the first rotating hole 431 and is slidably arranged on the box body 100 in the horizontal direction. The second screw seat 440 is provided with a second rotating hole 441, and the connecting shaft at the end of the other pressing barrel 210 is rotatably passed through the second rotating hole 441 and is slidably arranged on the box body 100 in the horizontal direction. In addition, in some embodiments, the first screw seat 430 is fixedly provided with a first motor, and the first motor and the first screw seat 430 move together in the horizontal direction and are fixed to the connecting shaft of the corresponding end of the pressing barrel 210 to drive the pressing barrel 210 to rotate. Similarly, the second screw seat 440 is fixedly provided with a second motor, and the second motor and the second screw seat 440 move together in the horizontal direction and are fixed to the connecting shaft of the corresponding end of the pressing barrel 210 to drive the pressing barrel 210 to rotate. In this regard, in terms of control, the first motor and the second motor can respectively control the rotation of the two pressing barrels 210 to achieve the two pressing barrels 210 to rotate in opposite directions downward. It is easy to understand that the mechanical reverse thread screw structure is adopted, and the screw rod 420 is driven by the adjustment handle 410 to achieve the precise synchronous movement of the two pressing barrels 210. The structure is simple and reliable, the operation is convenient and fast, the adjustment accuracy is high, and the adjustment demand for the spacing between the pressing barrels 210 during the production process can be quickly responded to. Furthermore, the reverse threaded connection design ensures that the two barrels 210 can move synchronously toward or away from each other, avoiding equipment failure or uneven spraying caused by asynchronous movement. This design reduces the complexity and maintenance costs of the equipment and improves the reliability and production efficiency of the equipment.

[0029] In some embodiments of the present invention, a blowing assembly is provided in the pressing barrel 210 to blow out grease and / or materials, which can effectively remove residual grease and materials and prevent grease accumulation from causing material agglomeration or equipment clogging. This design maintains the cleanliness of the inside of the pressing barrel 210 through regular or continuous airflow blowing, avoiding the influence of grease residue on the subsequent spraying process. At the same time, the blowing assembly can promptly remove material residues between different batches, avoid cross-contamination, and ensure the quality consistency of each batch of feed. In addition, the setting of the blowing assembly can also assist the flow and dispersion of materials, and improve the uniformity and continuity of the oil spraying process. This design significantly improves the operating stability and cleaning efficiency of the equipment, extends the service life of the equipment, and reduces maintenance costs. Especially in high-yield, continuous production feed processing environments, the blowing assembly can effectively prevent equipment clogging and grease waste. Specifically, referring to Figure 1 The blowing assembly includes an air blowing pipe 510, which is arranged downward and biased to one side of the feed channel 201. This directional blowing design can accurately control the area of ​​action of the airflow, effectively removing grease and material residues, and preventing the airflow from interfering with the normal flow of the material and the oil spraying process. In addition, the design biased to the feed channel 201 can also use the airflow to assist the falling and dispersion of the material, thereby improving the efficiency of the material falling into the output pipe 120, as well as improving the contact efficiency with the grease and the uniformity of the oil adhesion. Optionally, the air blowing pipe 510 is used to blow out inert gas, which can effectively isolate oxygen, avoid the problem of grease rancidity that may be caused by traditional air blowing, significantly reduce the risk of grease oxidation during the spraying process, and extend the stability and shelf life of the grease. At the same time, the inert gas can also reduce electrostatic adsorption on the surface of the material, prevent the aggregation of grease particles or the agglomeration of materials, improve the cleanliness of the spraying process and the fluidity of the material, and is particularly suitable for the high-value grease spraying process that is sensitive to oxidation.

[0030] Refer again Figure 1In some embodiments of the present invention, the feed low-temperature oil sprayer includes a temporary storage tank 600, the input pipe 110 is provided with an input branch 111, the output pipe 120 is provided with an output branch 121, the input end of the temporary storage tank 600 is connected to the output branch 121, so that the material can be input from the box body 100 to the temporary storage tank 600, and the output end of the temporary storage tank 600 is connected to the input branch 111, and can drive the material from the temporary storage tank 600 to be input into the box body 100, and the temporary storage tank 600 and the box body 100 form a closed loop to drive the material to circulate and attach grease. It should be noted that by providing the temporary storage tank 600 and forming a closed loop, the material can be circulated multiple times through the oil spraying assembly for oil attachment treatment, thereby achieving precise control of grease attachment. The total amount of oil attachment can be divided into multiple sprayings as needed, ensuring uniform grease attachment while avoiding the problem of excessive or insufficient single spraying. It can be understood that the closed-loop design significantly improves the oil attachment accuracy and consistency of feed quality, avoiding the local enrichment or omission that may occur in traditional single spraying.

[0031] Refer again Figure 3 According to the control method of the embodiment of the present invention, it is applied to the feed low-temperature oil sprayer according to the embodiment of the present invention, wherein the control method includes the following steps: S100, inputting materials: the prepared materials are inputted into the box 100 through the input pipe 110; S200, oil spraying process: After the material is input, the oil spraying pipe 310 sprays grease toward the pressing barrel 210, and the material can fall through the material passage 201. When the two pressing barrels 210 move downward in opposite directions, the grease is attached to the material and drives the material to fall to the output pipe 120; S300, cyclic oil spraying: During the oil spraying process, the total oiling amount N set according to the amount of material is divided into single oiling amounts. The material is input into the temporary storage tank 600 from the output branch 121, and then input into the box 100 from the input branch 111, so as to drive the material to circulate N times, and in each cycle, the material is coated with the single oiling amount. S400, outputting the material: after the circulating oil injection, the material is output from the output pipe 120 to the expansion process.

[0032] In some applications, low-temperature oil spraying is performed after conditioning and before puffing to spray a small amount of oil on the material. This is mainly aimed at the problem of oil loss inside the finished feed. After subsequent low-temperature puffing, oil spraying is still required, mainly targeting the oil on the outer surface of the finished feed.

[0033] According to the control method of the embodiment of the present invention, the structural innovation and process optimization of the low-temperature oil sprayer are integrated, and precise control of the grease spraying process is achieved through cyclic oil spraying and precise temperature control. Among them, the cyclic oil spraying design enables the grease to be evenly distributed inside and on the surface of the material, significantly improving the uniform adhesion effect of the grease. Precise temperature control reduces the risk of oxidation, retains the heat-sensitive nutrients in the grease, and improves the nutritional value of the feed. In addition, the closed-loop circuit and multiple oil attachment control methods ensure the accuracy and consistency of grease adhesion, significantly improving the quality and processing efficiency of the feed. This method reduces production costs and the difficulty of equipment maintenance, and is particularly suitable for industrial large-scale production. In addition, it can automatically adjust the oil spray parameters according to different feed formulas, realize intelligent production, and improve production efficiency and product quality stability.

[0034] Other structures and operations of the control method according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. Feed low temperature oil sprayer, characterized in that, include: A box body, wherein an input pipe is provided on the upper side of the box body for inputting the quenched and tempered material, and an output pipe is provided on the lower side of the box body for outputting the material for expansion; A material pressing assembly is provided in the box body, comprising a driving assembly and two laterally spaced pressing cylinders, wherein radial directions of the two pressing cylinders form a material passing channel, and the driving assembly is used to drive the two pressing cylinders to rotate downward in opposite directions to press the material and drive the material to flow into the output pipe; An oil spray assembly is arranged in the box body, and the oil spray assembly includes an oil spray pipe and a temperature control assembly. The temperature control assembly is used to control the temperature of the grease in the oil spray pipe to 40°C ~ 60°C. The oil spray pipe is provided with a nozzle, and the nozzle sprays the grease toward the peripheral wall of the pressing barrel to drive the grease to be adsorbed on the material.

2. The feed low-temperature oil sprayer according to claim 1, characterized in that: The pressing barrel is a hollow structure, the oil spray pipe is placed in the pressing barrel, and the nozzle sprays the grease toward the inner surface of the pressing barrel. The surface of the pressing barrel is a mesh structure to allow the grease to penetrate through to the outer surface and be adsorbed on the material.

3. The feed low-temperature oil sprayer according to claim 2, characterized in that: The mesh number of the surface of the pressing cylinder is greater than or equal to 150.

4. The feed low-temperature oil sprayer according to claim 1, characterized in that: The box body is also connected to an adjusting component, and the adjusting component is used to adjust the horizontal movement of the two pressing cylinders toward each other or away from each other.

5. The feed low-temperature oil sprayer according to claim 4, characterized in that: The adjusting assembly includes an adjusting handle, a screw rod, a first screw seat and a second screw seat. The two pressing barrels are respectively installed on the first screw seat and the second screw seat. The first screw seat and the second screw seat are both slidably arranged on the box body along the horizontal direction. The first screw seat and the second screw seat are respectively screwed with the screw rod in a reverse thread type. The adjusting handle is connected and drives the screw rod to rotate to drive the two pressing barrels to move.

6. The feed low-temperature oil sprayer according to claim 2, characterized in that: An air blowing assembly is provided in the pressing barrel to blow out the grease and / or the material.

7. The feed low-temperature oil sprayer according to claim 6, characterized in that: The blowing assembly comprises a blowing pipe, which is arranged downward and biased toward one side of the material transfer channel.

8. The feed low-temperature oil sprayer according to claim 7, characterized in that: The blowing pipe is used for blowing out the inert gas.

9. The feed low-temperature oil sprayer according to claim 1, characterized in that: The feed low-temperature oil sprayer also includes a temporary storage tank, the input pipe is provided with an input branch, the output pipe is provided with an output branch, the input end of the temporary storage tank is connected to the output branch, so that the material is input from the box to the temporary storage tank, the output end of the temporary storage tank is connected to the input branch, and can drive the material from the temporary storage tank to the box, the temporary storage tank and the box form a closed loop to drive the material to circulate and attach the grease.

10. A control method, characterized in that: Applicable to the feed low-temperature oil sprayer according to any one of claims 1 to 9; the pressing barrel is a hollow structure, the oil spraying pipe is placed in the pressing barrel, the nozzle sprays the grease toward the inner surface of the pressing barrel, and the surface of the pressing barrel is a mesh structure so as to penetrate to the outer surface and adsorb on the material; a blowing component is provided in the pressing barrel to blow out the grease and / or the material; the feed low-temperature oil sprayer also includes a temporary storage tank, the input pipe is provided with an input branch, the output pipe is provided with an output branch, the input end of the temporary storage tank is connected to the output branch, so that the material is input from the box to the temporary storage tank, the output end of the temporary storage tank is connected to the input branch, and can drive the material from the temporary storage tank to be input into the box, the temporary storage tank and the box form a closed loop to drive the material to circulate and attach the grease; The control method comprises the following steps: Input material: the prepared material is input into the box through the input pipe; Oil spraying treatment: After the material is input, the oil spraying pipe sprays the grease toward the pressing barrel, and the material can fall through the material passage. When the two pressing barrels move downward in opposite directions, the grease is attached to the material and drives the material to fall into the output pipe; Circular oil injection: During the oil injection process, the total oil amount N set according to the amount of the material is divided into single oiling amounts. The material is input into the temporary storage tank from the output branch and then into the box from the input branch to drive the material to circulate N times. In each cycle, the material is attached with the single oiling amount of grease; Output material: After circulating oil injection, the material is output from the output pipe to the expansion process.

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