Feed low-temperature oil spraying machine and control method

Abstract

This invention relates to the field of feed preparation technology, and discloses a low-temperature oil spraying machine and control method for feed. The low-temperature oil spraying machine includes: a housing with an input pipe on the upper side for feeding conditioned material and an output pipe on the lower side for discharging material to the puffing stage; a pressing assembly including a drive assembly and two laterally spaced pressing cylinders, the radial direction of which forms a material passage; the drive assembly driving the two pressing cylinders to rotate downwards in opposite directions to press the material and drive it into the output pipe; and an oil spraying assembly including an oil spraying pipe and a temperature control assembly controlling the temperature of the oil in the spraying pipe to 40℃~60℃; the spraying pipe is equipped with nozzles that spray oil towards the peripheral wall of the pressing cylinders. Low-temperature oil spraying after conditioning and before puffing significantly improves the uniformity of oil distribution and adhesion, enhances the water resistance and stability of aquatic feed, and preserves the nutrients and flavor of the oil, greatly improving the nutritional value of the feed.

Description

Technical Field

[0001] This invention relates to the field of feed processing technology, and in particular to a low-temperature feed oil sprayer and a control method for the low-temperature feed oil sprayer. Background Technology

[0002] In the feed processing industry, oils are typically added during feed production to improve nutritional value, palatability, and water stability. Currently, oil spraying is mainly performed after the feed has undergone extrusion. However, oil spraying after extrusion only adheres to the surface of the feed, making it prone to dispersion and precipitation in water. This results in poor water resistance and stability for aquatic feeds, leading to unsatisfactory performance in water. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a low-temperature oil spraying machine for feed, which performs low-temperature oil spraying after conditioning and before extrusion, significantly improving the uniformity of oil distribution and adhesion, effectively preventing dispersion in water. The low-temperature process preserves the nutrients and flavor of the oil, making it particularly suitable for heat-sensitive components, greatly improving the nutritional value of the feed, and simultaneously significantly enhancing the water resistance and stability of aquatic feed, improving the feed's performance in water, thus possessing significant technical and economic value.

[0004] The present invention also proposes a control method applicable to the above-mentioned low-temperature oil injection machine for feed.

[0005] The low-temperature feed oil sprayer according to the present invention comprises:

[0006] The box has an input pipe on its upper side for inputting the conditioned material and an output pipe on its lower side for outputting the material for expansion.

[0007] A pressing assembly is disposed in the housing. The pressing assembly includes a driving assembly and two pressing cylinders arranged laterally at intervals. The radial direction of the two pressing cylinders forms a material passage. The driving assembly is used to drive the two pressing cylinders to rotate downwards in opposite directions to press the material and drive the material to flow into the output pipe.

[0008] An oil spraying assembly is disposed in the housing. The oil spraying assembly includes an oil spraying pipe and a temperature control assembly. The temperature control assembly is used to control the temperature of the grease in the oil spraying pipe to be 40℃~60℃. The oil spraying pipe is provided with a nozzle, which sprays the grease toward the peripheral wall of the pressure cylinder to drive the grease to adhere to the material.

[0009] The low-temperature oil spraying machine for feed according to the present invention has at least the following beneficial effects: Firstly, by spraying the material at a low temperature after conditioning and before extrusion, it effectively solves the problem of uneven oil distribution that exists in traditional post-extrusion oil spraying. Furthermore, the unique reverse rotation extrusion design of the pressure cylinder ensures that the oil is evenly distributed on the material, avoiding localized accumulation or omissions, and significantly improving the consistency of feed quality. Secondly, the temperature control component strictly controls the oil temperature within the low-temperature range of 40℃-60℃, greatly reducing the risk of oil oxidation and rancidity caused by high-temperature environments. This not only preserves the nutritional components and flavor of the oil but also particularly helps retain heat-sensitive functional components such as fish oil and plant essential oils, significantly improving the nutritional value of the feed. Additionally, the low-temperature oil spraying machine... 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 resulting feed is less prone to dispersion and precipitation in water, greatly improving the water resistance and performance of aquatic feed. Furthermore, integrating the oil spraying process into a separate chamber between conditioning and extrusion avoids the oil waste and environmental pollution caused by traditional external oil spraying, while simplifying the process and improving production efficiency. Finally, this design reduces the damage to oil nutrients caused by high temperatures, making it particularly suitable for adding heat-sensitive nutrients such as DHA and EPA unsaturated fatty acids. This not only improves palatability but also provides more comprehensive nutritional support for farmed animals, significantly enhancing the overall quality and market competitiveness of the feed.

[0010] According to some embodiments of the present invention, the feed low-temperature oil sprayer has a hollow pressing cylinder, the oil spraying pipe is placed inside the pressing cylinder, the nozzle sprays the oil onto the inner surface of the pressing cylinder, and the surface of the pressing cylinder has a mesh structure to allow the oil to penetrate through to the outer surface and be adsorbed onto the material.

[0011] According to some embodiments of the feed low-temperature oil sprayer of the present invention, the mesh count of the surface of the pressing cylinder is greater than or equal to 150.

[0012] According to some embodiments of the feed low-temperature oil sprayer of the present invention, the housing is further connected to an adjustment component, which is used to adjust the horizontal relative movement or opposite movement of the two pressing cylinders.

[0013] According to some embodiments of the present invention, the feed low-temperature oil sprayer includes an adjusting handle, a screw rod, a first screw seat, and a second screw seat. The two pressing cylinders 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 disposed in the housing in the horizontal direction. The first screw seat and the second screw seat are respectively screwed into the screw rod with reverse thread. The adjusting handle is connected to and drives the screw rod to rotate, thereby driving the two pressing cylinders to move.

[0014] According to some embodiments of the feed low-temperature oil sprayer of the present invention, the pressing cylinder is provided with an air blowing component to blow out the oil and / or the material.

[0015] According to some embodiments of the feed low-temperature oil sprayer of the present invention, the air blowing assembly includes an air blowing pipe, which is arranged downward and biased toward one side of the feed passage.

[0016] According to some embodiments of the feed low-temperature oil sprayer of the present invention, the air blowing pipe is used to blow out inert gas.

[0017] 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, and the output pipe is provided with an output branch. The input end of the temporary storage tank is connected to the output branch to allow the material to be input from the housing to the temporary storage tank. The output end of the temporary storage tank is connected to the input branch and can drive the material to be input from the temporary storage tank to the housing. The temporary storage tank and the housing form a closed loop to drive the material to be circulated and coated with the oil.

[0018] According to the control method of the present invention, it is applied to the feed low-temperature oil spraying machine of the present invention; the pressing cylinder has a hollow structure, the oil spraying pipe is placed inside the pressing cylinder, the nozzle sprays the grease toward the inner surface of the pressing cylinder, the surface of the pressing cylinder has a mesh structure to penetrate to the outer surface and adsorb onto the material; an air blowing assembly is provided inside the pressing cylinder to blow out the grease and / or the material; the feed low-temperature oil spraying machine 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 to allow 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 to be input from the temporary storage tank to the box, the temporary storage tank and the box form a closed loop to drive the material to be circulated and coated with the grease;

[0019] The control method includes the following steps:

[0020] Input material: The prepared material is input into the box body through the input pipe;

[0021] Oil spraying process: After the material is input, the oil spraying pipe sprays the grease into the pressure cylinder, and the material can fall through the material passage. When the two pressure cylinders move downwards in opposite directions, the grease adheres to the material and drives the material to fall into the output pipe.

[0022] Circulating oil spraying: During the oil spraying process, the total amount of oil N set according to the amount of material is divided into single oil spraying amounts. The material is input into the temporary storage tank from the output branch and then into the box from the input branch, so as to drive the material to circulate N times. In each cycle, the material is coated with the oil of the single oil spraying amount.

[0023] Output material: After the circulating oil injection, the material is output from the output pipe to the expansion treatment.

[0024] The control method described in this invention has at least the following beneficial effects: It integrates structural innovation and process optimization of the low-temperature oil spraying machine, achieving precise control of the oil spraying process through circulating oil spraying and precise temperature control. The circulating oil spraying design ensures that the oil is evenly distributed inside and on the surface of the material, significantly improving the uniform adhesion of the oil. Precise temperature control reduces the risk of oxidation, preserves heat-sensitive nutrients in the oil, and improves the nutritional value of the feed. Furthermore, the closed-loop circuit and multi-stage oil application control method ensure the accuracy and consistency of oil adhesion, significantly improving feed quality and processing efficiency. This method reduces production costs and equipment maintenance difficulty, making it particularly suitable for large-scale industrial production. In addition, it can automatically adjust the oil spraying parameters according to different feed formulations, achieving intelligent production and improving production efficiency and product quality stability.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of a low-temperature feed oil injection machine according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the connection of the adjustment components of the feed low-temperature oil injection machine according to an embodiment of the present invention;

[0029] Figure 3 A flowchart of the control method for a low-temperature oil injection machine for feed applied in an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] Box 100; Input tube 110; Input branch 111; Output tube 120; Output branch 121;

[0032] Material passage 201; pressing cylinder 210;

[0033] Injection pipe 310; nozzle 311;

[0034] Adjustment handle 410; screw rod 420; first screw seat 430; first rotating hole 431; second screw seat 440; second rotating hole 441;

[0035] 510 air tube;

[0036] Temporary storage tank 600. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0039] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0041] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] In the feed processing industry, oils are typically added during feed production to improve nutritional value, palatability, and water stability. Currently, oil spraying is mainly performed after the feed has undergone extrusion. However, oil spraying after extrusion only adheres to the surface of the feed, making it prone to dispersion and precipitation in water. This results in poor water resistance and stability for aquatic feeds, leading to unsatisfactory performance in water.

[0043] Therefore, such as Figure 1 and Figure 2 As shown, the feed low-temperature oil spraying machine proposed in this invention includes a housing 100, a pressing assembly disposed in the housing 100, and an oil spraying assembly disposed in the housing 100. Specifically, an input pipe 110 is provided on the upper side of the housing 100 for inputting conditioned material, and an output pipe 120 is provided on the lower side of the housing 100 for outputting material for puffing. The pressing assembly includes a drive assembly and two laterally spaced pressing cylinders 210. The radial direction of the two pressing cylinders 210 forms a material passage 201. The drive assembly drives the two pressing cylinders 210 to rotate downwards in opposite directions to press the material and drive it into the output pipe 120. Furthermore, the oil spraying assembly includes an oil spraying pipe 310 and a temperature control component. The temperature control component controls the temperature of the oil inside the oil spraying pipe 310 to be between 40°C and 60°C. The oil spraying pipe 310 is equipped with a nozzle 311, which sprays oil towards the peripheral wall of the pressing cylinder 210 to drive the oil to adhere to the material. It should be noted that low-temperature oil spraying of the material after conditioning and before extrusion effectively solves the problem of uneven oil distribution that exists in traditional oil spraying after extrusion. In addition, the unique reverse rotation extrusion design of the pressing cylinder 210 ensures that the oil is evenly distributed on the material, avoiding local enrichment or leakage, and significantly improving the consistency of feed quality. Secondly, the temperature control component strictly maintains the oil temperature within a low-temperature range of 40℃-60℃, significantly reducing the risk of oil oxidation and rancidity caused by high-temperature environments. This not only preserves the nutritional components and flavor of the oil but also particularly helps retain heat-sensitive functional components such as fish oil and plant essential oils, significantly improving the nutritional value of the feed. Furthermore, the combination of low-temperature oil spraying and 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 resulting feed is less prone to dispersion and precipitation in water, greatly improving the water resistance and performance of aquatic feed. In addition, integrating the oil spraying process into a separate chamber 100 after conditioning and before extrusion avoids the oil waste and environmental pollution caused by traditional external oil spraying, while simplifying the process and improving production efficiency. Finally, this design also reduces the damage to oil nutrients caused by high temperatures, making it particularly suitable for adding heat-sensitive nutrients such as DHA and EPA unsaturated fatty acids. This not only improves the palatability of the feed but also provides more comprehensive nutritional support for farmed animals, significantly enhancing the overall quality and market competitiveness of the feed.

[0044] Refer to Figure 1 In some embodiments of the present invention, the pressure cylinder 210 has a hollow structure, the oil spray pipe 310 is placed inside the pressure cylinder 210, and the nozzle 311 sprays grease towards the inner surface of the pressure cylinder 210. The surface of the pressure cylinder 210 has a mesh structure to allow the grease to penetrate through to the outer surface and adhere to the material. By designing the pressure cylinder 210 as a hollow structure and placing the oil spray pipe 310 inside it, directional penetration spraying of grease from the inside out is achieved. This unique structural design allows the grease to be directly sprayed onto the inner surface of the pressure cylinder 210 and evenly diffused to the outer surface. Combined with the rotating and squeezing action of the pressure cylinder 210, the grease can be more deeply and evenly adsorbed into the interior and 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 material surface. Meanwhile, the mesh structure on the surface of the pressing cylinder 210 ensures effective oil penetration while preventing material from clogging the nozzles, improving the reliability and continuous operation capability of the equipment. This makes it particularly suitable for feed production requiring highly uniform oil adhesion, especially aquatic feeds and specialty feeds with strict requirements for oil distribution. Optionally, the mesh count of the pressing cylinder 210 surface is greater than or equal to 150. This fine mesh design significantly increases the surface area and efficiency of oil penetration. Understandably, the high mesh count allows oil to penetrate more quickly and evenly from the inner surface to the outer surface and adhere to the material, significantly improving the uniformity and depth of oil adhesion. Simultaneously, the high mesh count effectively reduces the risk of material residue clogging and getting trapped inside the pressing cylinder 210, improving the stability of continuous operation and ease of cleaning. For example, the size of the pulverized material depends on the screen aperture of the pulverizer, generally ranging from 100 to 1000 μm. After conditioning, the particle size remains essentially unchanged. A 150-mesh screen can intercept particles with a diameter >104 μm. Preferably, the mesh size of the pressing cylinder 210 is 200, which can intercept particles with a diameter >75 μm, thus effectively reducing material penetration into the pressing cylinder 210. This design is particularly suitable for feed materials with high viscosity or fine particles, ensuring that the oil penetrates evenly into each particle, avoiding localized enrichment or omissions that may occur with traditional spraying methods. The high mesh size 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.

[0045] In some embodiments of the present invention, the housing 100 is connected to an adjustment assembly, which is used to adjust the horizontal relative or opposite movement of the two pressing cylinders 210. This adjustable design allows for flexible adjustment of the width of the material passage 201 according to the characteristics of different materials, such as particle size, moisture content, and viscosity, and further allows for adjustment of the extrusion pressure. This enables the equipment to be optimized for different feed formulations and raw material characteristics, ensuring uniform force on the material during extrusion and avoiding material breakage or insufficient oil adhesion due to improper pressure. Furthermore, this design allows for flexible adjustment of the oil adhesion amount according to production needs, such as adjusting the width of the material passage 201 under equal oil spraying conditions, achieving more precise control of oil addition to the material passing through the material passage 201. In some embodiments of the present invention, further reference is made... 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. Two pressure cylinders 210 are respectively installed in the first screw seat 430 and the second screw seat 440. Both the first screw seat 430 and the second screw seat 440 are slidably disposed in the housing 100 in the horizontal direction. The first screw seat 430 and the second screw seat 440 are respectively screwed into the screw rod 420 with reverse thread. The adjustment handle 410 connects to and drives the screw rod 420 to rotate, thereby driving the two pressure cylinders 210 to move. The first screw seat 430 is provided with a first rotating hole 431. The connecting shaft at the end of one pressure cylinder 210 rotatably passes through the first rotating hole 431 and is slidably disposed in the housing 100 in the horizontal direction. The second screw seat 440 is provided with a second rotating hole 441. The connecting shaft at the end of the other pressure cylinder 210 rotatably passes through the second rotating hole 441 and is slidably disposed in the housing 100 in the horizontal direction. In some embodiments, a first motor is fixedly mounted on the first screw base 430. The first motor and the first screw base 430 move together in the horizontal direction and are fixed to the connecting shaft at the end of the corresponding pressure cylinder 210 to drive the pressure cylinder 210 to rotate. Similarly, a second motor is fixedly mounted on the second screw base 440. The second motor and the second screw base 440 move together in the horizontal direction and are fixed to the connecting shaft at the end of the corresponding pressure cylinder 210 to drive the pressure cylinder 210 to rotate. In terms of control, the first motor and the second motor can control the rotation of the two pressure cylinders 210 respectively, achieving downward and reverse rotation of the two pressure cylinders 210. It is easy to understand that by adopting a mechanical reverse-threaded screw structure, the precise synchronous movement of the two pressure cylinders 210 is achieved by adjusting the handle 410 to drive the screw rod 420. This structure is simple and reliable, easy and quick to operate, and has high adjustment accuracy, enabling rapid response to the adjustment needs of the pressure cylinder 210 spacing during production. Furthermore, the reverse threaded connection design ensures that the two pressure cylinders 210 can move synchronously towards or away from each other, avoiding equipment malfunctions or uneven coating caused by asynchronous movement. This design reduces equipment complexity and maintenance costs, while improving equipment reliability and production efficiency.

[0046] In some embodiments of the present invention, an air-blowing component is provided inside the pressing cylinder 210 to blow out grease and / or materials, effectively removing residual grease and materials and preventing grease accumulation that could lead to material agglomeration or equipment blockage. This design maintains the cleanliness of the inside of the pressing cylinder 210 through periodic or continuous airflow purging, avoiding the impact of grease residue on subsequent spraying processes. Simultaneously, the air-blowing component can promptly remove material residue from different batches, avoiding cross-contamination and ensuring the consistency of feed quality in each batch. Furthermore, the air-blowing component also assists in the flow and dispersion of materials, improving the uniformity and continuity of the oil spraying process. This design significantly improves the operational stability and cleaning efficiency of the equipment, extends its service life, and reduces maintenance costs. Especially in high-volume, continuous feed processing environments, the air-blowing component effectively prevents equipment blockage and grease waste. Specifically, refer to... Figure 1 The air blowing assembly includes an air blowing pipe 510, which is arranged downwards and biased towards one side of the material passage 201. This directional air blowing design can precisely control the area of ​​airflow, effectively removing grease and material residues while avoiding airflow interference with the normal flow of materials and the oil spraying process. Furthermore, the biased design towards the material passage 201 can also utilize airflow to assist the falling and dispersion of materials, improving the efficiency of material falling into the output pipe 120, as well as improving the contact efficiency with grease and the uniformity of oil application. Optionally, the air blowing pipe 510 is used to blow out inert gas, which can effectively isolate oxygen, avoiding the grease rancidity problem that may be caused by traditional air purging, significantly reducing the oxidation risk of grease during the spraying process, and extending the stability and shelf life of the grease. At the same time, the inert gas can also reduce electrostatic adsorption on the material surface, preventing grease particle aggregation or material agglomeration, improving the cleanliness of the oil spraying process and the flowability of the material, making it particularly suitable for high-value grease spraying processes that are sensitive to oxidation.

[0047] Refer to Figure 1In some embodiments of the present invention, the low-temperature feed spraying machine includes a temporary storage tank 600, an input pipe 110 with an input branch 111, and an output pipe 120 with an output branch 121. The input end of the temporary storage tank 600 is connected to the output branch 121 to allow material to be input from the housing 100 into the temporary storage tank 600. 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 into the housing 100. The temporary storage tank 600 and the housing 100 form a closed loop to drive the material to be circulated and coated with grease. It should be noted that by setting up the temporary storage tank 600 and forming a closed loop, the material can be circulated multiple times through the spraying assembly for oil coating treatment, achieving precise control of grease adhesion. The total amount of oil can be divided into multiple sprays as needed, ensuring uniform grease adhesion while avoiding the problem of excessive or insufficient coating in a single spray. Understandably, the closed-loop design significantly improves the oil application accuracy and feed quality consistency, avoiding the local enrichment or omissions that may occur with traditional single-spray coating.

[0048] Refer to Figure 3 The control method according to an embodiment of the present invention is applied to a feed low-temperature oil injection machine according to an embodiment of the present invention, wherein the control method includes the following steps:

[0049] S100, Input material: The prepared material is input into the box 100 through the input pipe 110;

[0050] S200, Oil spraying treatment: After the material is input, the oil spraying pipe 310 sprays grease into the pressure cylinder 210, and the material can fall through the material passage 201. When the two pressure cylinders 210 move downwards in opposite directions, the material is coated with grease and the material falls into the output pipe 120.

[0051] S300, Circulating oil spraying: During the oil spraying process, the total amount of oil N set according to the amount of material is divided into single oil application amounts. The material is input into the temporary storage tank 600 from the output branch 121, and then into the box 100 from the input branch 111, so as to drive the material to circulate N times. In each cycle, the material is coated with the single amount of oil.

[0052] S400, Output Material: After the circulating oil injection, the material is output from the output pipe 120 to the expansion treatment.

[0053] In some applications, low-temperature oil spraying after conditioning and before extrusion involves spraying a small amount of oil onto the material, mainly to address the issue of insufficient oil inside the finished feed. After low-temperature extrusion, oil spraying is still required, mainly to address the oil on the outer surface of the finished feed.

[0054] The control method according to embodiments of the present invention integrates structural innovation and process optimization of a low-temperature oil spraying machine. It achieves precise control of the oil spraying process through cyclic oil spraying and precise temperature control. The cyclic oil spraying design ensures uniform oil distribution within and on the surface of the material, significantly improving the uniform adhesion of the oil. Precise temperature control reduces the risk of oxidation, preserves heat-sensitive nutrients in the oil, and enhances the nutritional value of the feed. Furthermore, the closed-loop circuit and multi-stage oil application control method guarantee the accuracy and consistency of oil adhesion, significantly improving feed quality and processing efficiency. This method reduces production costs and equipment maintenance difficulty, making it particularly suitable for large-scale industrial production. In addition, it can automatically adjust spraying parameters according to different feed formulations, achieving intelligent production and improving production efficiency and product quality stability.

[0055] Other configurations and operations of the control method according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0056] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A feed low-temperature oil sprayer, characterized by, The application relates to a feed low-temperature oil spraying machine. The box is provided with an input pipe at the upper side for inputting the conditioned material, and is provided with an output pipe at the lower side for outputting the material to a puffing device. The material pressing assembly is arranged in the box and comprises a driving assembly and two transversely spaced material pressing cylinders, a material passing channel is formed between the two material pressing cylinders in the radial direction, and the driving assembly is used for driving the two material pressing cylinders to rotate reversely downward to press the material and drive the material to flow into the output pipe. The oil spraying assembly is arranged in the box and comprises an oil spraying pipe and a temperature control assembly, the temperature control assembly is used for controlling the temperature of the oil in the oil spraying pipe to be 40-60 DEG C, the oil spraying pipe is provided with a spraying head, the spraying head sprays the oil towards the peripheral wall of the material pressing cylinder to drive the oil to be adsorbed on the material. The material pressing cylinder is a hollow structure, the oil spraying pipe is arranged in the material pressing cylinder, the spraying head sprays the oil towards the inner surface of the material pressing cylinder, the surface of the material pressing cylinder is a mesh structure, the oil can penetrate through the mesh structure to the outer surface and be adsorbed on the material, the material pressing cylinder is provided with a blowing assembly for blowing the oil and / or the material, the feed low-temperature oil spraying machine further comprises 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 communicated with the output branch to input the material from the box into the temporary storage tank, the output end of the temporary storage tank is communicated with the input branch and can drive the material to be input from the temporary storage tank into the box, the temporary storage tank and the box form a closed loop circuit to drive the material to circulate and be attached with the oil.

2. The feed oil sprayer according to claim 1, characterized in that: The mesh number of the surface of the material pressing cylinder is greater than or equal to 150.

3. The feed oil sprayer according to claim 1, characterized in that: The box is further connected with an adjusting assembly, the adjusting assembly is used for adjusting the relative movement or opposite movement of the two material pressing cylinders in the horizontal direction.

4. The feed oil sprayer according to claim 3, characterized in that: The adjusting assembly comprises an adjusting handle, a screw rod, a first screw seat and a second screw seat, the two material pressing cylinders are respectively arranged in the first screw seat and the second screw seat, the first screw seat and the second screw seat are slidably arranged in the box in the horizontal direction, the first screw seat and the second screw seat are reversely toothed with the screw rod, and the adjusting handle is connected with the screw rod and drives the screw rod to rotate to drive the two material pressing cylinders to move.

5. The feed cry-oil sprayer of claim 1, wherein: The blowing assembly comprises a blowing pipe, the blowing pipe is arranged downward and is deviated to one side of the material passing channel.

6. The feed oil sprayer according to claim 5, characterized in that: The blowing pipe is used for blowing inert gas.

7. Control method, characterized in that: The application is applied to the feed low-temperature oil spraying machine in any one of claims 1 to 6. The control method comprises the following steps: Inputting material: the conditioned material is input from the input pipe into the box; Oil spraying treatment: after the material is input, the oil spraying pipe sprays the oil towards the material pressing cylinder, the material can fall through the material passing channel, the oil is attached to the material and drives the material to fall into the output pipe when the two material pressing cylinders move reversely downward. Circulating oil injection: in the oil injection process, the total oil injection amount N set according to the amount of the material is equally divided into single oil injection amounts, the material is input from the output branch to the temporary storage tank, and then input from the input branch to the box to drive the material to circulate N times, and in each circulation, the material is injected with a single oil injection amount of oil; Output material: after the circulating oil injection, the material is output from the output pipe to the puffing process.

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