Continuous high-temperature treatment grain deep processing technology and equipment thereof
By using continuous high-temperature processing technology and equipment, the problems of inaccurate temperature control and impurity residue have been solved, achieving full cooking and uniformity of the finished grain product, improving product quality and safety, and making it suitable for efficient processing of various grain raw materials.
Patent Information
- Application Number
- CN202512009591.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-02-13
AI Technical Summary
In existing grain processing technologies, temperature control during the high-temperature treatment stage is inaccurate, and the linkage between steaming and roasting processes is poor, resulting in insufficient cooking and flavor in the finished product. Furthermore, grinding and purification are not coordinated, and residual impurities affect quality and safety.
The process employs a continuous high-temperature treatment, including graded screening, high-pressure spray cleaning, precise temperature-controlled steam cooking, constant-temperature roasting, multi-stage grinding and polishing, and secondary purification. Combined with specialized equipment, it achieves precise temperature control and multi-stage purification.
It achieves full cooking and uniformity of the finished product, reduces impurity residue, improves product quality and safety, is compatible with a variety of grain raw materials, shortens processing time and reduces labor costs.
Smart Images
Figure CN121513992A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of grain processing technology, specifically to a continuous high-temperature grain processing technology and equipment. Background Technology
[0002] In the field of grain processing technology, grain processing is a crucial link in the market and people's livelihoods. As market demand for high-quality grain products continues to rise, the drawbacks of traditional processing methods are becoming increasingly apparent. Current grain processing technology faces several technical problems: inaccurate temperature control during high-temperature processing, a lack of effective coordination between steaming and roasting processes, and significant differences in temperature transitions. This directly leads to incomplete cooking of the finished product while simultaneously failing to retain its natural flavor, resulting in a bland taste and inconsistent texture. Furthermore, there is a lack of coordination between the grinding and subsequent purification stages. The grinding process produces insufficient particle uniformity, and the purification process fails to effectively clean the ground material, leaving various impurities in the finished product. This affects product quality and poses potential safety hazards. These problems have long limited the quality and value of the grain processing industry, making it difficult to meet the market's demand for a diverse range of high-quality grain products, and also restricting the production capacity and costs of grain processing enterprises. Summary of the Invention
[0003] The purpose of this invention is to provide a continuous high-temperature grain processing technology and equipment that can solve the above-mentioned problems.
[0004] To achieve the above objectives, the present invention provides the following technical solution:
[0005] A continuous high-temperature grain processing technology includes the following steps performed in sequence:
[0006] S1 Grading and Screening: A special vibrating screening machine is used, and the raw materials are graded and screened through 3 layers of screens;
[0007] S2 High-pressure spray cleaning: The screened raw materials enter the high-pressure spray cleaning machine, which uses 30-40℃ warm water and 0.3-0.5MPa water pressure for high-pressure spraying, and uses a brush roller to gently brush them. The cleaning time is 3-5 minutes. After cleaning, 60℃ hot air is used to quickly remove water.
[0008] S3 150℃ Steam Cooking: The raw material enters a 150℃ precision temperature-controlled steam cooking tank, and 150℃ saturated steam with a pressure of 0.4MPa is introduced and cooked for 10-15 minutes.
[0009] S4 340℃ High-Temperature Roasting: The steamed raw materials are directly fed into a constant-temperature roasting machine and roasted at a constant temperature of 340℃. Sand is added during the roasting process, and the raw materials are continued to be stir-fried at a speed of 30-40r / min for 8-12 minutes to reduce the moisture content of the raw materials to 8-10%.
[0010] S5 Multi-stage Grinding and Polishing: First, a toothed roller mill is used for primary grinding to grind the roasted raw material to 80-100 mesh particles. Then, a colloid mill is used for secondary grinding to refine it to 120-150 mesh. Finally, an airflow polishing machine is used to polish the particle surface by impacting it with a high-speed airflow of 20-25 m / s.
[0011] S6 Secondary Purification: First, a precision sieve with a 180-mesh screen is used for secondary screening to remove large particles of impurities generated during the grinding process; then, a CCD image recognition color sorter is used to remove discolored particles, incompletely ground raw materials, and trace impurities.
[0012] A continuous high-temperature grain processing equipment includes a dedicated grading and screening machine, a high-pressure spray washing machine, a 150℃ precision temperature-controlled steam cooking tank, a 340℃ constant temperature roasting machine, a secondary grinding machine, an airflow polishing machine, a precision screening machine, and a CCD color sorter connected in sequence. The various processes are connected by a material conveyor and are equipped with a temperature control system and a dust removal device.
[0013] Preferably, the apertures of the three layers of screens in step S1 are 2mm, 1.2mm, and 0.8mm, respectively, and the screen tilt angle can be adjusted within the range of 15-25°.
[0014] Preferably, the steam flow rate in step S3 is controlled at 3-4 mm / s.
[0015] Preferably, the 340℃ constant temperature stir-frying machine has a built-in temperature sensor and a frequency conversion stir-frying device, with a temperature error of ≤±2℃ and a stir-frying speed of 30-40r / min.
[0016] Preferably, the temperature control system can monitor the temperature of the steaming and frying processes in real time, and the temperature error is ≤ ±2℃.
[0017] Preferably, the grain raw materials that can be adapted to the process include quinoa, rice, corn, wheat, and legumes.
[0018] Beneficial effects
[0019] This invention improves the quality of the final product. By controlling the temperature of the raw materials, it ensures thorough cooking and solidifies natural flavors. Combined with multi-stage grinding and polishing and two purification processes, it results in a product with uniform particle distribution, a delicate texture, and significantly reduced impurities. Furthermore, this invention enables continuous operation throughout the entire process, shortening processing time and effectively reducing labor costs. In addition, the process is adaptable to various grain raw materials, overcoming the limitations of traditional processing equipment that has a limited range of applicable grains, and providing a solution for processing multiple types of grains.
[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Detailed Implementation
[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0025] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0026] like Figure 1 As shown, a continuous high-temperature grain processing technology includes the following steps performed in sequence:
[0027] S1 Grading and Screening: A special vibrating screener is used to grade and screen the raw materials through 3 layers of screens to remove impurities such as stones, particles, and dust.
[0028] S2 High-Pressure Spray Cleaning: The screened raw materials enter the high-pressure spray cleaning machine, where they are sprayed with 30-40℃ warm water at 0.3-0.5MPa water pressure, and gently brushed with a brush roller. The cleaning time is 3-5 minutes. After cleaning, 60℃ hot air is used to quickly remove water to prevent the raw materials from getting damp and deteriorating. After high-pressure spray cleaning, the surface dirt residue rate of the raw materials is ≤0.1%.
[0029] S3 150℃ Steam Cooking: The raw material enters a 150℃ precision temperature-controlled steam cooking tank, and 150℃ saturated steam with a pressure of 0.4MPa is introduced and cooked for 10-15 minutes.
[0030] S4 340℃ High Temperature Roasting: The steamed raw materials are directly put into the constant temperature roasting machine and roasted at a constant temperature of 340℃. Sand is added during the roasting process and the raw materials are continued to be stir-fried. Sand has thermal conductivity, which can achieve uniform heating of the raw materials. Then, the raw materials are stir-fried at a speed of 30-40r / min for 8-12 minutes to reduce the moisture content of the raw materials to 8-10% and at the same time solidify the natural flavor of the grains.
[0031] S5 Multi-stage Grinding and Polishing: First, a toothed roller mill is used for primary grinding to grind the roasted raw material to 80-100 mesh particles. Then, a colloid mill is used for secondary grinding to refine it to 120-150 mesh. Finally, an airflow polishing machine is used to polish the particle surface by impacting it with a high-speed airflow of 20-25 m / s.
[0032] S6 Secondary purification: First, a precision sieve with a 180-mesh screen is used for secondary screening to remove large particles of impurities generated during the grinding process; then, a CCD image recognition color sorter is used to remove discolored particles, incompletely ground raw materials, and trace impurities. The color sorting accuracy of the CCD image recognition color sorter is ≥99.9%, and the final product impurity rate is ≤0.1%.
[0033] A continuous high-temperature grain processing equipment includes a dedicated grading and screening machine, a high-pressure spray washing machine, a 150℃ precision temperature-controlled steam cooking tank, a 340℃ constant temperature roasting machine, a secondary grinding machine, an airflow polishing machine, a precision screening machine, and a CCD color sorter, connected in sequence. The various processes are connected by a material conveyor, the conveying speed of which is matched with the processing efficiency of each piece of equipment, and a unified temperature control system and dust removal device are provided.
[0034] Specifically, in step S1, the apertures of the three layers of screens are 2mm, 1.2mm, and 0.8mm, respectively, and the screen tilt angle can be adjusted within the range of 15-25°, with a screening efficiency of ≥98%.
[0035] Specifically, in step S3, the steam flow rate is controlled at 3-4 mm / s, and the raw material maturation rate is ≥99%.
[0036] Specifically, the 340℃ constant temperature stir-frying machine has a built-in temperature sensor and a frequency conversion stir-frying device, with a temperature error of ≤±2℃ and a stir-frying speed of 30-40r / min.
[0037] Specifically, the temperature control system can monitor the temperature of the steaming and frying processes in real time, with a temperature error of ≤±2℃.
[0038] Specifically, the grain raw materials that the process can be adapted to include a variety of grain raw materials such as quinoa, rice, corn, wheat, and beans.
[0039] In this embodiment, quinoa is used as the raw material. First, it is graded and screened. The quinoa is placed into a special vibrating screen with three layers of screens with apertures of 2mm, 1.2mm, and 0.8mm. The screens are tilted at a suitable angle to grade and remove impurities from the quinoa. After screening, the quinoa is conveyed to a high-pressure spray cleaning machine for high-pressure spray cleaning. It is sprayed with 35℃ warm water at 0.4MPa water pressure, and gently brushed with a brush roller at the same time. After cleaning, 60℃ hot air is turned on to quickly remove water, ensuring that the residual dirt on the surface of the quinoa is reduced. Then, the quinoa enters a 150℃ precision temperature-controlled steam cooking tank for 150℃ steam cooking. 150℃ saturated steam at 0.4MPa pressure is introduced into the tank, and the steam flow rate is controlled at 3.5mm / s. The quinoa is kept at this temperature for 12 minutes.
[0040] After steaming, the quinoa is directly fed into a 340℃ constant temperature roasting machine for high-temperature roasting at 340℃. Sand is added during the roasting process, and the quinoa is stirred continuously. The sand has thermal conductivity, which allows the raw materials to be heated evenly. Then, it is stir-fried at a speed of 35r / min for 10 minutes to reduce the moisture content of the quinoa to 9%. The roasted quinoa is then fed into a secondary grinding mill and an air polisher for multi-stage grinding and polishing. First, it is ground to 80-100 mesh by a toothed roller mill, then refined to 130 mesh by a colloid mill for secondary grinding. Finally, the air polisher is started to polish the surface of the particles by impacting them with a high-speed airflow of 22m / s to remove burrs.
[0041] Finally, the quinoa material enters a precision screening machine and a CCD color sorter for secondary purification. First, the precision screening machine with a 180-mesh screen removes large particles of impurities generated during the grinding process, and then the CCD image recognition color sorter removes discolored particles and incompletely ground quinoa raw materials.
[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A continuous high-temperature grain processing technology, characterized in that, The following steps are performed in sequence: S1 Grading and Screening: A special vibrating screening machine is used, and the raw materials are graded and screened through 3 layers of screens; S2 High-pressure spray cleaning: The screened raw materials enter the high-pressure spray cleaning machine, which uses 30-40℃ warm water and 0.3-0.5MPa water pressure for high-pressure spraying, and uses a brush roller to gently brush them. The cleaning time is 3-5 minutes. After cleaning, 60℃ hot air is used to quickly remove water. S3 150℃ Steam Cooking: The raw material enters a 150℃ precision temperature-controlled steam cooking tank, and 150℃ saturated steam with a pressure of 0.4MPa is introduced and cooked for 10-15 minutes. S4 340℃ High-Temperature Roasting: The steamed raw materials are directly fed into a constant-temperature roasting machine and roasted at a constant temperature of 340℃. Sand is added during the roasting process, and the raw materials are continued to be stir-fried at a speed of 30-40r / min for 8-12 minutes to reduce the moisture content of the raw materials to 8-10%. S5 Multi-stage Grinding and Polishing: First, a toothed roller mill is used for primary grinding to grind the roasted raw material to 80-100 mesh particles. Then, a colloid mill is used for secondary grinding to refine it to 120-150 mesh. Finally, an airflow polishing machine is used to polish the particle surface by impacting it with a high-speed airflow of 20-25 m / s. S6 Secondary Purification: First, a precision sieve with a 180-mesh screen is used for secondary screening to remove large particles of impurities generated during the grinding process; then, a CCD image recognition color sorter is used to remove discolored particles, incompletely ground raw materials, and trace impurities.
2. A device for continuous high-temperature processing of grains for intensive processing, characterized in that, The equipment includes a dedicated grading and screening machine, a high-pressure spray cleaning machine, a 150℃ precision temperature-controlled steam cooking tank, a 340℃ constant temperature roasting machine, a two-stage grinding machine, an airflow polishing machine, a precision screening machine, and a CCD color sorter, all connected in sequence. Each process is connected by a material conveyor, and each piece of equipment is equipped with a temperature control system and a dust removal device.
3. The continuous high-temperature grain processing technology according to claim 1, characterized in that, In step S1, the apertures of the three layers of screens are 2mm, 1.2mm, and 0.8mm, respectively, and the screen tilt angle can be adjusted within the range of 15-25°.
4. The continuous high-temperature grain processing technology according to claim 1, characterized in that, In step S3, the steam flow rate is controlled at 3-4 mm / s.
5. The equipment for a continuous high-temperature grain processing technology according to claim 2, characterized in that, The 340℃ constant temperature stir-frying machine has a built-in temperature sensor and a frequency conversion stir-frying device, with a temperature error of ≤±2℃ and a stir-frying speed of 30-40r / min.
6. The equipment for a continuous high-temperature grain processing technology according to claim 2, characterized in that, The temperature control system can monitor the temperature of the steaming and frying processes in real time, and the temperature error is ≤ ±2℃.
7. The continuous high-temperature grain processing technology according to claim 1, characterized in that, The process is compatible with grain raw materials including quinoa, rice, corn, wheat, and beans.