A preparation device for decarburized oat bran

Abstract

The invention relates to the technical field of oat bran decarboxylation, and in particular to a preparation device for decarboxylation oat bran, comprising: a pretreatment unit; an image acquisition unit that acquires initial images of oat bran poured into an upper screen at several angles and screen images of the multi-layer screens after the oat bran is screened out each time; a desugaring unit that desugars the pretreated oat bran; a detection unit that detects the concentration of an enzymatic hydrolyzate of the oat bran during enzymatic hydrolysis at several time points; a control unit that determines the proportion of impurities in the oat bran and the initial vibration frequency of a vibration motor, adjusts the initial vibration frequency according to a blocking degree coefficient of the multi-layer screen, and determines an adjustment method for an enzyme addition amount according to the concentration of the enzymatic hydrolyzate at several time points; a degreasing unit that degreases the desugared oat bran; and a post-treatment unit that washes and dries the degreased oat bran. The invention can effectively realize the desugaring and degreasing of the oat bran.

Description

Technical Field

[0001] The invention relates to the technical field of decarburized oat bran, in particular to a preparation device for decarburized oat bran. Background Art

[0002] Oat bran is the part of oats that contains the most dietary fiber, which is helpful for intestinal health. Desugaring and degreasing can reduce the possibility of microbial growth in oat bran and extend the shelf life of oat bran. At the same time, desugaring and degreasing can reduce the fat smell and sugar content in oat bran, making the taste of oat bran lighter and purer, which is more suitable for the taste needs of more people. For people who need to control fat intake, such as those with hyperlipidemia or obesity, defatted and desugared oat bran is a better choice.

[0003] Existing desugaring and degreasing methods mainly include physical means: such as extrusion puffing method, microwave treatment method, chemical means: solvent extraction method, acid-base treatment method, enzymatic hydrolysis method, etc. Although these technologies can achieve the desugaring and degreasing of oat bran and obtain decarbohydrated oat bran, the influence of impurities in oat bran on the desugaring and degreasing effect is not considered during the desugaring and degreasing process. For example, when chemical means are used to desugar and degrease oat bran, excess impurities will affect the contact between oat bran and enzymes and organic solvents, thereby affecting the desugaring and degreasing effect of oat bran, resulting in oat bran with different desugaring and degreasing effects.

[0004] Therefore, there is an urgent need for a preparation device for decarbohydrated oat bran, which can ensure that the oat bran is desugared and defatted while screening out impurities to avoid the influence of impurities on the desugaring and defatting effects of the oat bran, so that the processed oat bran can help stabilize blood sugar levels, reduce the risk of cardiovascular diseases and promote intestinal health. Summary of the invention

[0005] To this end, the present invention provides a preparation device for decarburized oat bran, which is used to overcome the problem of low bran decarburization efficiency caused by failure to consider the influence of impurities on the desugaring and degreasing effects during the desugaring and degreasing process of oat bran in the prior art.

[0006] To achieve the above object, the present invention provides a device for preparing decarboxylated oat bran, comprising:

[0007] A pre-treatment unit, comprising a first treatment component for screening out impurities in oat bran and a second treatment component connected to the first treatment component for cleaning the oat bran, wherein the first treatment component comprises a multi-layer screen for screening out large particles of impurities in the oat bran and a vibration motor for driving the multi-layer screen to vibrate;

[0008] An image acquisition unit connected to the preprocessing unit, for acquiring initial images of the oat bran poured into the uppermost screen at several angles and screen images of the multi-layer screen after the oat bran is screened out each time;

[0009] a desugaring unit connected to the pretreatment unit and used for desugaring the pretreated oat bran;

[0010] A detection unit, which is connected to the desugaring unit and is used to detect the concentration of the enzymatic hydrolyzate of the oat bran during the enzymatic hydrolysis process at several time points;

[0011] A control unit, which is connected to the image acquisition unit and the detection unit respectively, and is used to determine the proportion of impurities in the oat bran according to the initial image, determine the initial vibration frequency of the vibration motor according to the impurity proportion, the weight of the oat bran, the aperture of the multi-layer screen, the inclined placement mode of the multi-layer screen and the standard vibration frequency, and determine the blocking degree coefficient of the multi-layer screen according to the screen image, adjust the initial vibration frequency according to the blocking degree coefficient, and determine the adjustment mode of the enzyme addition amount according to the concentration of the enzymatic solution at the several time points;

[0012] A degreasing unit connected to the desugaring unit, for degreasing the desugared oat bran, and determining the fat content in the oat bran according to the weight of the oat bran after desugaring, the weight of the oat bran before desugaring, and a preset sugar-lipid ratio, and determining the degreasing time according to the fat content;

[0013] The post-processing unit is connected to the degreasing unit and is used for cleaning and drying the defatted oat bran.

[0014] Furthermore, the vibration motor is arranged on the screen frame of the multi-layer screen, and the multi-layer screen is composed of at least three screens, namely a first screen, a second screen and a third screen, wherein:

[0015] The first screen, the second screen and the third screen are all tilted at a preset tilt angle, and the tilting placement is staggered or parallel;

[0016] The mesh aperture of the second mesh is between that of the first mesh and that of the third mesh, and the mesh aperture of the first mesh is larger than that of the third mesh.

[0017] Furthermore, the second processing component includes a cleaning tank, an agitator and an atomizing nozzle, wherein the cleaning tank is used to clean oat bran, the agitator is arranged at the bottom of the cleaning tank to fully mix the oat bran in the cleaning tank with water, and the atomizing nozzle is arranged above the cleaning tank to further clean the oat bran, wherein:

[0018] The bottom of the cleaning tank is provided with a drain outlet for discharging sewage and a filter screen arranged on the drain outlet for preventing the oat bran from being lost.

[0019] Furthermore, the desugaring unit comprises:

[0020] An enzymolysis reaction tank, which is used to enzymolyze sugars in oat bran, wherein a first valve for controlling the amount and speed of enzyme addition and a first flow regulating valve for controlling the amount of water added are relatively arranged on the top outer side of the enzymolysis reaction tank, and a first stirring component is arranged inside the enzymolysis reaction tank to fully mix the enzyme, water and oat bran;

[0021] The heating and cooling component is sleeved on the outer side of the bottom of the enzymolysis reaction tank to adjust the reaction temperature in the enzymolysis reaction tank.

[0022] Furthermore, the degreasing unit comprises:

[0023] An extraction tank is used to extract fat from oat bran. A second valve for controlling the amount of organic solvent added and a second flow regulating valve for controlling the amount of water added are arranged on the outer side of the top of the extraction tank. A second stirring component is arranged inside the extraction tank to fully mix the organic solvent, water and oat bran.

[0024] A separation component, which is arranged at the bottom of the extraction tank and is used to separate the oat bran and the organic solvent;

[0025] The recovery component is connected to the solvent outlet of the separation component and is used to recover the organic solvent.

[0026] Furthermore, the control unit determines texture features and shape features in the initial image at several angles respectively, determines a single impurity ratio according to the texture features and shape features at a single angle, and determines the impurity ratio according to each single impurity ratio and the corresponding angle.

[0027] Furthermore, a first correlation coefficient between the impurity ratio and the vibration frequency is determined according to the impurity ratio, a second correlation coefficient between the multi-layer screen and the vibration frequency is determined according to the inclined placement method, the screen aperture of the multi-layer screen and the weight of the oat bran, and the initial vibration frequency is determined according to the first correlation coefficient, the second correlation coefficient and the standard vibration frequency.

[0028] Furthermore, the sieve hole blockage ratios of the first sieve, the second sieve and the third sieve are determined respectively according to the sieve hole blockage ratios, the blockage degree coefficients of the multi-layer sieves are determined according to the sieve hole blockage ratios, and the adjustment method of the initial vibration frequency is determined according to the blockage degree coefficient and the preset blockage coefficient.

[0029] Furthermore, the adjustment method of the initial vibration frequency is determined according to the comparison result between the blocking degree coefficient and the preset blocking coefficient, wherein:

[0030] If the blocking degree coefficient is greater than the preset blocking coefficient, the initial vibration frequency is increased.

[0031] Furthermore, the concentration increase rate is determined according to the concentration of the enzymatic solution at the several time points, and the increase amount of the enzyme is determined according to the comparison result between the concentration increase rate and the preset increase rate.

[0032] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention can effectively screen out large particle impurities in oat bran through the cooperation of the multi-layer screen in the first processing component and the vibration motor, and the integrated image acquisition unit and the control unit can accurately determine the impurity ratio according to the initial image, and then reasonably determine the initial vibration frequency of the vibration motor, and then determine the blockage degree coefficient according to the screen image and adjust the frequency, so as to ensure the high efficiency and accuracy of impurity screening in the oat bran. At the same time, under the synergistic effect of the detection unit and the control unit, the desugaring unit can flexibly adjust the enzyme addition amount according to the concentration of the enzymatic hydrolyzate at different time points, optimize the desugaring effect, thereby further improving the impurity screening rate, so that the final oat bran has higher quality, further helps to stabilize blood sugar levels, reduce the risk of cardiovascular diseases and promote intestinal health.

[0033] Furthermore, the present invention places multiple layers of sieves in a staggered and parallel manner to change the movement trajectory and force conditions of impurities in the oat bran, thereby enhancing the effect of separating impurities from the oat bran, effectively improving the efficiency and accuracy of impurity screening, and laying a good foundation for subsequent desugaring, defatting and other processes, so that the final oat bran is of higher quality, further helping to stabilize blood sugar levels, reduce the risk of cardiovascular diseases and promote intestinal health.

[0034] Furthermore, the present invention determines a first correlation coefficient between the impurity ratio and the vibration frequency, determines a second correlation coefficient between the multi-layer screen and the vibration frequency, determines the initial vibration frequency according to the first correlation coefficient, the second correlation coefficient and the standard vibration frequency, determines the blockage degree coefficient of the multi-layer screen according to the blockage ratio of the screen holes, determines the adjustment method of the initial vibration frequency according to the blockage degree coefficient and the preset blockage coefficient, thereby improving the efficiency and accuracy of impurity screening, laying a good foundation for subsequent desugaring, defatting and other processes, so that the final oat bran has higher quality, further helps stabilize blood sugar levels, reduce the risk of cardiovascular diseases and promote intestinal health. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structural connection of a device for preparing decarboxylated oat bran according to an embodiment of the present invention;

[0036] Figure 2 is a control flow chart of a control unit in an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of staggered placement of multiple layers of screens according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of parallel placement of multiple layers of screens according to an embodiment of the present invention;

[0039] Figure 5 The flowchart of determining the initial vibration frequency according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0042] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0043] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] See also Figure 1 , Figure 2 As shown, Figure 1 This is a schematic diagram of the structural connection of a device for preparing decarboxylated oat bran according to an embodiment of the present invention. Figure 2 This is a control flow chart of a control unit of an embodiment of the present invention. Specifically, an embodiment of the present invention provides a preparation device for decarburized oat bran, comprising:

[0045] A pre-treatment unit, comprising a first treatment component for screening out impurities in oat bran and a second treatment component connected to the first treatment component for cleaning the oat bran, wherein the first treatment component comprises a multi-layer screen for screening out large particles of impurities in the oat bran and a vibration motor for driving the multi-layer screen to vibrate;

[0046] An image acquisition unit connected to the preprocessing unit, for acquiring initial images of the oat bran poured into the uppermost screen at several angles and screen images of the multi-layer screen after the oat bran is screened out each time;

[0047] a desugaring unit connected to the pretreatment unit and used for desugaring the pretreated oat bran;

[0048] A detection unit, which is connected to the desugaring unit and is used to detect the concentration of the enzymatic hydrolyzate of the oat bran during the enzymatic hydrolysis process at several time points;

[0049] A control unit, which is connected to the image acquisition unit and the detection unit respectively, and is used to determine the proportion of impurities in the oat bran according to the initial image, determine the initial vibration frequency of the vibration motor according to the impurity proportion, the weight of the oat bran, the aperture of the multi-layer screen, the inclined placement mode of the multi-layer screen and the standard vibration frequency, and determine the blocking degree coefficient of the multi-layer screen according to the screen image, adjust the initial vibration frequency according to the blocking degree coefficient, and determine the adjustment mode of the enzyme addition amount according to the concentration of the enzymatic solution at the several time points;

[0050] A degreasing unit connected to the desugaring unit, for degreasing the desugared oat bran, and determining the fat content in the oat bran according to the weight of the oat bran after desugaring, the weight of the oat bran before desugaring, and a preset sugar-lipid ratio, and determining the degreasing time according to the fat content;

[0051] The post-processing unit is connected to the degreasing unit and is used for cleaning and drying the defatted oat bran.

[0052] It is understandable that the pretreatment unit mainly pre-treats the oat bran to prevent the impurities and large particle impurities on the surface of the oat bran from affecting the effect of desugaring and defatting, and removes impurities in the oat bran, dirt and microorganisms on the surface of the oat bran through the first treatment component and the second treatment component. The desugaring unit can remove the sugar in the oat bran through enzymatic reaction, and the defatting unit can dissolve the lipids in the oat bran through organic solvents, so that after being processed by the post-treatment unit, dry and clean oat bran with complete desugaring and defatting is obtained.

[0053] In a specific embodiment, the post-processing unit includes a dryer for drying the defatted oat bran, a hot air control system and a discharge port. The specific functional units in the decarburized oat bran preparation device can be added or screened according to actual conditions, which are not specifically limited here and will not be repeated.

[0054] In a specific embodiment, the first processing component may include a magnetic separator for absorbing magnetic impurities in the oat bran in addition to a multi-layer screen for screening out large particles of impurities in the oat bran and a vibration motor for moving the multi-layer screen. In the implementation, the composition structure of the first processing component can be determined according to the actual situation, and is not specifically limited here and will not be repeated. The second processing component can adopt any cleaning method in the prior art, which will not be repeated here.

[0055] In a specific embodiment, the time intervals of the several time points range from 20 minutes to 30 minutes. Preferably, the time intervals of the several time points are 25 minutes. In implementation, the value range and preferred value of the time intervals of the several time points can be determined according to actual conditions. No specific limitation is made here and no further details are given.

[0056] The present invention can effectively screen out large particle impurities in oat bran through the cooperation of the multi-layer screen in the first processing component and the vibration motor, and integrates the image acquisition unit and the control unit, which can accurately determine the impurity ratio according to the initial image, and then reasonably determine the initial vibration frequency of the vibration motor, and then determine the blockage degree coefficient according to the screen image and adjust the frequency, so as to ensure the high efficiency and accuracy of impurity screening in the oat bran. At the same time, under the synergistic effect of the detection unit and the control unit, the desugaring unit can flexibly adjust the enzyme addition amount according to the concentration of the enzymatic hydrolyzate at different time points, optimize the desugaring effect, thereby further improving the impurity screening rate, so that the final oat bran has higher quality, further helps to stabilize blood sugar levels, reduce the risk of cardiovascular diseases and promote intestinal health.

[0057] See also Figure 3 , Figure 4 As shown, Figure 3 Schematic diagram of staggered placement of multiple layers of screens according to an embodiment of the present invention. Figure 4 The present invention is a schematic diagram of a parallel placement of a multi-layer screen according to an embodiment of the present invention. Specifically, the vibration motor is arranged on a screen frame of the multi-layer screen. The multi-layer screen is composed of at least three screens, namely, a first screen, a second screen and a third screen, wherein:

[0058] The first screen, the second screen and the third screen are all tilted at a preset tilt angle, and the tilting placement is staggered or parallel;

[0059] The mesh aperture of the second mesh is between that of the first mesh and that of the third mesh, and the mesh aperture of the first mesh is larger than that of the third mesh.

[0060] It is understandable that the vibration motor is arranged on the screen frame of the multi-layer screen to provide vibration power to the multi-layer screen. Through the vibration of the vibration motor, the oat bran placed on the screen can move on the screen, thereby achieving the screening of impurities. The multi-layer screen is composed of at least three screens. The multi-layer design can gradually screen the oat bran, and according to the difference in particle size between impurities and bran, a finer separation can be achieved, thereby improving the screening efficiency.

[0061] It can be understood that the tilted placement is staggered or parallel. In the staggered mode, the tilt directions of the first screen, the second screen and the third screen are staggered, and the impurities are more easily separated from the bran due to the change in the tilt direction. In the parallel mode, the tilt directions of the first screen, the second screen and the third screen are parallel, and different degrees of impurity screening are achieved when the oat bran passes through the screen.

[0062] In a specific embodiment, the preset inclination angle ranges from 10° to 18°, preferably, the preset inclination angle is 15°. Preferably, the multi-layer screen is placed in an staggered manner. In implementation, the preset inclination angle can be determined according to actual conditions and is not specifically limited here. As long as the oat bran does not slide too fast and the oat bran does not accumulate on the screen and affect the screening effect, it is not specifically limited here.

[0063] The present invention places multiple layers of sieves in a staggered and parallel manner, changes the movement trajectory and force conditions of impurities in the oat bran, enhances the effect of separating impurities from the oat bran, effectively improves the efficiency and accuracy of impurity screening, lays a good foundation for subsequent desugaring, defatting and other processes, and makes the final oat bran higher in quality, further helps stabilize blood sugar levels, reduce the risk of cardiovascular diseases and promote intestinal health.

[0064] Specifically, the second processing component includes a cleaning tank, an agitator and an atomizing nozzle, wherein the cleaning tank is used to clean oat bran, the agitator is arranged at the bottom of the cleaning tank to fully mix the oat bran in the cleaning tank with water, and the atomizing nozzle is arranged above the cleaning tank to further clean the oat bran, wherein:

[0065] The bottom of the cleaning tank is provided with a drain outlet for discharging sewage and a filter screen arranged on the drain outlet for preventing the oat bran from being lost.

[0066] It is understandable that the cleaning tank is the core container for cleaning oat bran during the pretreatment of oat bran, and it plays a key role in containing the cleaning medium and oat bran. The agitator is placed at the bottom of the cleaning tank. The rotation of the agitator can make the oat bran and the cleaning medium in the cleaning tank fully and evenly mixed and turned, thereby effectively improving the cleaning effect and ensuring that all kinds of impurities attached to the surface of the oat bran can be detached to the greatest extent. The atomizing nozzle sprays water in the form of atomization, and with the help of the fine characteristics of the atomized droplets, it further enhances the cleaning efficiency of the oat bran and deeply cleans the fine impurities on the oat bran. The drain outlet discharges the sewage generated during the cleaning process to maintain the continuous effectiveness of the cleaning environment in the cleaning tank. The setting of the filter ensures the material integrity and recovery rate of the oat bran in the cleaning process.

[0067] In a specific embodiment, the water inlet and feed inlet of the cleaning tank are arranged in opposite directions, that is, fresh water flows in from the water inlet at one end of the cleaning tank, and oat bran enters the cleaning tank from the feed inlet at the other end of the cleaning tank. This makes it convenient for the oat bran to always be in contact with a clean water source during the cleaning process, thereby improving the cleaning effect. The agitator is a flexible stirring blade with variable speed, which can achieve gentle stirring at low speed to avoid damaging the bran, and can also increase the speed to increase the cleaning force. In implementation, the directions of the water inlet and feed inlet of the cleaning tank and the type of the agitator can be determined according to actual conditions, and are not specifically limited here and will not be repeated.

[0068] In a specific embodiment, a special drainage structure is provided near the drain outlet at the bottom of the cleaning tank, and the drainage structure is used to form a weak vortex flow during drainage, which helps to concentrate and discharge the fine and broken impurities deposited at the bottom of the cleaning tank, while preventing bran from being carried out in large quantities. In implementation, the drainage structure can be determined according to actual conditions, and is not specifically limited here and will not be elaborated on.

[0069] Specifically, it is characterized in that the desugaring unit comprises:

[0070] An enzymolysis reaction tank, which is used to enzymolyze sugars in oat bran, wherein a first valve for controlling the amount and speed of enzyme addition and a first flow regulating valve for controlling the amount of water added are relatively arranged on the top outer side of the enzymolysis reaction tank, and a first stirring component is arranged inside the enzymolysis reaction tank to fully mix the enzyme, water and oat bran;

[0071] The heating and cooling component is sleeved on the outer side of the bottom of the enzymolysis reaction tank to adjust the reaction temperature in the enzymolysis reaction tank.

[0072] It is understandable that the key part of the whole desugaring unit of the enzymolysis reaction tank utilizes the catalytic action of the enzyme to decompose the sugars and other components in the oat bran, thereby achieving the purpose of desugaring. The first flow regulating valve is used to control the amount of water added, and water is the medium of the enzymolysis reaction, which can fully contact the enzyme and the oat bran. The first stirring assembly inside the enzymolysis reaction tank fully mixes the enzyme, water and the oat bran, so that the enzyme molecules can quickly contact and react with the sugar components in the oat bran, thereby improving the rate of the whole enzymolysis reaction and the effect of desugaring. The heating and cooling assembly is used to adjust the enzymolysis reaction temperature to ensure the maximum effect of the enzyme.

[0073] In a specific embodiment, the heating and cooling component has a heater and a refrigeration tube for adjusting the reaction temperature. At the same time, the heating and cooling component also has a temperature sensor for real-time monitoring of the reaction temperature, so that the control unit can adjust the reaction temperature according to the most suitable temperature for enzymatic hydrolysis. In implementation, the relevant structural composition in the heating and cooling component can be determined according to actual conditions, and no specific limitation is made here and no further description is given.

[0074] In a specific embodiment, the enzyme can be amylase, lipase, etc., which can dissolve sugar and fat in oat bran to obtain decarbohydrated oat bran. In practice, the type of enzyme in the desugaring unit can be selected and determined according to actual conditions, which is not specifically limited here and will not be repeated.

[0075] Specifically, the degreasing unit comprises:

[0076] An extraction tank is used to extract fat from oat bran. A second valve for controlling the amount of organic solvent added and a second flow regulating valve for controlling the amount of water added are arranged on the outer side of the top of the extraction tank. A second stirring component is arranged inside the extraction tank to fully mix the organic solvent, water and oat bran.

[0077] A separation component, which is arranged at the bottom of the extraction tank and is used to separate the oat bran and the organic solvent;

[0078] The recovery component is connected to the solvent outlet of the separation component and is used to recover the organic solvent.

[0079] It is understood that the second stirring component can make the organic solvent, water and oat bran fully contact, improve the extraction efficiency, and through the appropriate stirring speed and stirring paddle shape, the organic solvent can better penetrate into the oat bran to dissolve the fat. After the extraction is completed, the mixture of the organic solvent containing the dissolved fat and the oat bran solid flows out from the bottom of the extraction tank by gravity into the separation component, and the heavier oat bran particles and the lighter organic solvent are separated by layers. The recovery component can collect the organic solvent again and use it again in the extraction process after appropriate treatment (such as distillation to remove impurities, etc.), thereby reducing production costs and reducing the pollution of the organic solvent to the environment.

[0080] In a specific embodiment, the separation component is a rotary separator and a filtering separation device. The rotary separator separates the heavier oat bran and the lighter organic solvent into layers for preliminary separation, and the filtering separation device separates the oat bran and the organic solvent through a filter medium such as a filter screen. The recovery component may include a distillation tower, a condenser, and a storage container. The organic solvent is heated and evaporated in the distillation tower, then cooled by the condenser to become a liquid and collected in a storage container. In implementation, the internal functional components of the separation component and the recovery component can be determined according to actual conditions, and are not specifically limited here and will not be described in detail.

[0081] In a specific embodiment, preferably, the organic solvent can be n-hexane and ethanol. N-hexane has good solubility for oils and fats, and ethanol can dissolve part of sugars and some fat-soluble impurities to obtain oat bran after decarbohydration. In implementation, the type of organic solvent in the degreasing unit can be selected and determined according to actual conditions, which is not specifically limited here and will not be repeated.

[0082] Specifically, the control unit determines the texture features and shape features in the initial image at several angles respectively, determines the single impurity ratio according to the texture features and shape features at a single angle, and determines the impurity ratio according to each single impurity ratio and the corresponding angle.

[0083] It is understandable that the initial image is taken when the oat bran is just placed in the multi-layer sieve, and the oat bran is photographed based on several angles to ensure that the appearance characteristics of impurities in the oat bran are fully captured.

[0084] In a specific embodiment, the several angles are on the square of oat bran, and the oat bran is inclined at an angle of 45° from left to right and front to back. The impurities in the initial image will have obvious granular textures, and the oat bran is relatively smooth. This texture difference can be used as a basis for distinction. By counting the area ratio of the impurity texture features to the oat bran texture features, the first impurity ratio can be determined. The edge detection algorithm is used to determine the segmentation boundary of the oat bran and the impurities, and then the shape features are extracted. The Canny edge detection algorithm can be used to find the segmentation boundary of the oat bran and the impurities in the image, and then the ratio of the number of impurity pixels in a single initial image to the number of pixels of the oat bran is determined according to the segmentation boundary to determine the second impurity ratio. The single impurity ratio in a single initial image is the mean of the first impurity ratio and the second impurity ratio. Since the several angles are on the square of oat bran, and the oat bran is inclined at an angle of 45° from left to right and front to back, the weight corresponding to the oat bran on the square is 0.1, and the weights corresponding to the other angles of 45° from left to right and front to back are the same, and the sum of the weights of the initial image at all the several angles is 1. Therefore, the impurity ratio of the initial image at all angles is the average of the weighted sum of the single impurity ratio and the weight corresponding to the initial image at all angles. In implementation, the method for determining the texture features and shape features in the initial images at the several angles, the method for calculating the single impurity ratio, and the method for calculating the impurity ratio can be determined according to actual conditions, and are not specifically limited here and will not be repeated.

[0085] See also Figure 5 As shown, it is a flow chart of determining the initial vibration frequency in an embodiment of the present invention. Specifically, a first correlation coefficient between the impurity ratio and the vibration frequency is determined according to the impurity ratio, a second correlation coefficient between the multi-layer screen and the vibration frequency is determined according to the inclined placement method, the screen aperture of the multi-layer screen and the weight of oat bran, and the initial vibration frequency is determined according to the first correlation coefficient, the second correlation coefficient and the standard vibration frequency.

[0086] It is understandable that the impurity ratio reflects the content of impurities in oat bran. If the impurity ratio is high, a higher vibration frequency may be required to better separate the impurities. The inclination angle of the tilted placement of the multi-layer screen is also very important. If the inclination angle of the screen is large, the oat bran and impurities will slide faster under the action of gravity, which may affect the accuracy of the vibration screening. The size of the screen aperture directly determines the size of the particles that can pass through the screen. For oat bran and impurities, if the screen aperture is large, larger particles of impurities may pass more easily, while smaller apertures will screen impurities more strictly. Similarly, heavier oat bran will exert greater pressure on the multi-layer screen. During the vibration process, an appropriate vibration frequency is required to ensure that the material can be fully screened on the screen to avoid insufficient screening due to excessive weight.

[0087] In a specific embodiment, the initial vibration frequency is determined by the first correlation coefficient, the second correlation coefficient and the standard vibration frequency. The standard vibration frequency is the common vibration frequency of the vibration motor. Assuming that the impurity ratio and the vibration frequency are linearly related, the first correlation coefficient is the average of the slopes of the linear relationship equations between the impurity ratio and the vibration frequency in several screening results. Assuming that there is a functional relationship between the multi-layer screen and the vibration frequency, the second correlation coefficient is , A is the first screening coefficient corresponding to the placement of the multi-layer screen, D is the second screening coefficient corresponding to the mesh aperture of the multi-layer screen, and W is the weight of oat bran. The placement is staggered, the first screening coefficient is 0.9, the placement is parallel, the first screening coefficient is 0.7, the second screening coefficient corresponding to the mesh aperture of the multi-layer screen is 0.8-0.95, preferably, the second screening coefficient is 0.9, the first weight of the first correlation coefficient is 0.3-0.4, the second weight of the second correlation coefficient is 0.6-0.7, and the sum of the first weight and the second weight is 1. The initial vibration frequency is the product of the first weight and the first correlation coefficient, the sum of the second weight and the second correlation coefficient, and the standard vibration frequency. In implementation, the value range and preferred value of the first correlation coefficient, the second correlation coefficient, the first weight, the second weight, and the standard vibration frequency can be determined according to actual conditions, and are not specifically limited here, and will not be repeated.

[0088] Specifically, the sieve hole blockage ratios of the first sieve, the second sieve and the third sieve are determined respectively according to the sieve hole blockage ratios, the blockage degree coefficients of the multi-layer sieves are determined according to the sieve hole blockage ratios, and the adjustment method of the initial vibration frequency is determined according to the blockage degree coefficient and the preset blockage coefficient.

[0089] Specifically, the adjustment method of the initial vibration frequency is determined according to the comparison result between the blocking degree coefficient and the preset blocking coefficient, wherein:

[0090] If the blocking degree coefficient is greater than the preset blocking coefficient, the initial vibration frequency is increased.

[0091] It is understandable that the first sieve, the second sieve and the third sieve all have multiple sieve holes, and impurities will block the sieve holes when filtering. Therefore, the sieve hole blockage situation is obtained by shooting the sieve images of the first sieve, the second sieve and the third sieve, and the sieve hole blockage state is intuitively understood. If multiple layers of sieves are blocked, it means that the initial vibration frequency needs to be adjusted to ensure that impurities in the oat bran are screened out during subsequent use.

[0092] It is understandable that if the clogging coefficient is greater than the preset clogging coefficient, it means that the multi-layer screen is seriously clogged. Therefore, the initial vibration frequency is adjusted. By increasing the vibration frequency, the movement of the oat bran on the multi-layer screen is more intense, which helps to clear the clogged screen holes and enable the screening process to proceed normally.

[0093] In a specific embodiment, the corresponding sieve hole blocking ratios need to be determined for the first sieve, the second sieve, and the third sieve. For example, the sieve hole blocking ratio of the first sieve is the ratio of the number of blocked sieve holes to the total number of sieve holes of the first sieve. The sieve hole blocking ratio can be determined by image analysis, and because the sieve hole diameter of the first sieve is larger, the sieve hole diameter of the second sieve is in the middle, and the sieve hole diameter of the third sieve is the smallest, the third weight corresponding to the first sieve is 0.1-0.2, the fourth weight corresponding to the second sieve is 0.2-0.3, and the fifth weight corresponding to the third sieve is 0.5-0.7. The blocking degree coefficient of the multi-layer sieve is the average of the sum of the product of the third weight and the sieve hole blocking ratio of the first sieve, the product of the fourth weight and the sieve hole blocking ratio of the second sieve, and the product of the fifth weight and the sieve hole blocking ratio of the third sieve. Preferably, the third weight is 0.1, the fourth weight is 0.2, the fifth weight is 0.7, and the sum of the third weight, the fourth weight, and the fifth weight is 1. The preset congestion coefficient has a value range of 0.15 to 0.25, and preferably, the preset congestion coefficient has a value of 0.2. In implementation, the value ranges, preferred values, and determination methods of the congestion degree coefficient, the preset congestion coefficient, the third weight, the fourth weight, and the fifth weight can be determined according to actual conditions, and are not specifically limited here and will not be described in detail.

[0094] In a specific embodiment, the increase in the initial vibration frequency is 10% to 15% of the initial vibration frequency. Preferably, the value of the initial vibration frequency is 12%. In implementation, the value range and preferred value of the initial vibration frequency can be determined according to actual conditions, and no specific limitation is made here and no further details are given.

[0095] The present invention determines a first correlation coefficient between the impurity ratio and the vibration frequency, determines a second correlation coefficient between the multi-layer screen and the vibration frequency, determines the initial vibration frequency according to the first correlation coefficient, the second correlation coefficient and the standard vibration frequency, determines the blocking degree coefficient of the multi-layer screen according to the screen hole blocking ratio, determines the adjustment method of the initial vibration frequency according to the blocking degree coefficient and the preset blocking coefficient, improves the efficiency and accuracy of impurity screening, lays a good foundation for subsequent desugaring, defatting and other processes, makes the final oat bran higher in quality, further helps stabilize blood sugar levels, reduces the risk of cardiovascular diseases and promotes intestinal health.

[0096] Specifically, the concentration increase rate is determined according to the concentration of the enzymatic solution at the several time points, and the increase amount of the enzyme is determined according to the comparison result between the concentration increase rate and the preset increase rate.

[0097] It is understandable that under the enzymatic hydrolysis reaction of the desugaring unit, the sugar in the oat bran will be dissolved. At this time, the concentration of the enzymatic hydrolyzate will change and rise. In addition, if the amount of enzyme added is insufficient, the enzymatic hydrolysis reaction cannot be fully carried out, and the concentration rising rate will become lower. Therefore, the enzyme addition amount is adjusted by the preset rising rate.

[0098] In a specific embodiment, the concentration rising rate is the ratio of the enzymolysis solution concentration at adjacent time points to the time interval. At several time points, multiple concentration rising rates can be determined, and the amount of enzyme increase is determined based on the comparison result of the concentration rising rate and the preset rising rate. If the concentration rising rate is lower than the preset rising rate, the enzyme is increased. The value of the preset rising rate is the average of the concentration rising rates in multiple historical enzymatic desugaring reactions, and the amount of enzyme increase is 5% to 10% of the amount of enzyme added. Preferably, the increase is 8% of the amount of enzyme added. In implementation, the preset rising rate and the range of values, preferred values ​​and calculation methods of the amount of enzyme increase can be determined according to actual conditions, and are not specifically limited here and will not be repeated.

[0099] Specifically, the fat content in the oat bran is determined according to the weight of the oat bran after desugaring, the weight of the oat bran before desugaring, and the preset sugar-lipid ratio, and the degreasing time is determined according to the correlation coefficient between the fat content and the amount of solvent added and the basic degreasing time;

[0100] It is understandable that during the desugaring process, as the enzymatic reaction decomposes and separates sugars, the weight of the oat bran decreases, and the weight reduction is mainly due to the reduction of sugars. The preset sugar-lipid ratio is the quantitative relationship between the sugar and fat content in the oat bran. The fat content in the oat bran can be inferred by using the preset sugar-lipid ratio through the known weight difference before and after desugaring.

[0101] In a specific embodiment, the preset sugar-lipid ratio ranges from 0.1 to 0.3, preferably, the preset sugar-lipid ratio is 0.2, the fat content in the oat bran is the ratio of the difference between the weight of the oat bran after desugaring and the weight of the oat bran before desugaring to the preset sugar-lipid ratio, the basic degreasing time is the average of several degreasing times of the same weight of oat bran, the degreasing time is the product of the correlation coefficient and the basic degreasing time, and there is a linear relationship between the fat content and the amount of solvent added, which can be determined based on several tests. In implementation, the preset sugar-lipid ratio, the basic degreasing time and the degreasing time can be determined according to actual conditions, and are not specifically limited here and will not be repeated.

[0102] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A preparation device for decarburized oat bran, characterized in that: include: A pre-treatment unit, comprising a first treatment component for screening out impurities in oat bran and a second treatment component connected to the first treatment component for cleaning the oat bran, wherein the first treatment component comprises a multi-layer screen for screening out large particles of impurities in the oat bran and a vibration motor for driving the multi-layer screen to vibrate; An image acquisition unit connected to the preprocessing unit, for acquiring initial images of the oat bran poured into the uppermost screen at several angles and screen images of the multi-layer screen after the oat bran is screened out each time; a desugaring unit connected to the pretreatment unit and used for desugaring the pretreated oat bran; A detection unit, which is connected to the desugaring unit and is used to detect the concentration of the enzymatic hydrolyzate of the oat bran during the enzymatic hydrolysis process at several time points; A control unit, connected to the image acquisition unit and the detection unit, respectively, for determining texture features and shape features in the initial image at several angles, determining a single impurity ratio according to the texture features and shape features at a single angle, and determining the impurity ratio according to each single impurity ratio and the corresponding angle; The control unit also determines a first correlation coefficient between the impurity ratio and the vibration frequency according to the impurity ratio, determines a second correlation coefficient between the multi-layer screen and the vibration frequency according to the tilt placement mode, the mesh aperture of the multi-layer screen and the weight of the oat bran, determines an initial vibration frequency according to the first correlation coefficient, the second correlation coefficient and the standard vibration frequency; determines a clogging degree coefficient of the multi-layer screen according to the screen image, and adjusts the initial vibration frequency according to the clogging degree coefficient, and is also used to determine an adjustment method for the enzyme addition amount according to the concentration of the enzymatic solution at the several time points; Among them, initial vibration frequency = (first weight × first correlation coefficient + second weight × second correlation coefficient) × standard vibration frequency, the first correlation coefficient is the average of the slopes of the linear relationship equations between the impurity ratio and the vibration frequency in several screening results, and the second correlation coefficient is , A is the first screening coefficient corresponding to the placement of the multi-layer screen, D is the second screening coefficient corresponding to the mesh aperture of the multi-layer screen, and W is the weight of oat bran; A degreasing unit connected to the desugaring unit, for degreasing the desugared oat bran, and determining the fat content in the oat bran according to the weight of the oat bran after desugaring, the weight of the oat bran before desugaring, and a preset sugar-lipid ratio, and determining the degreasing time according to the fat content; A post-processing unit connected to the degreasing unit for washing and drying the defatted oat bran; The vibration motor is arranged on the screen frame of the multi-layer screen, and the multi-layer screen is composed of at least three screens, namely, a first screen, a second screen and a third screen, wherein: The first screen, the second screen and the third screen are all tilted at a preset tilt angle, and the tilting placement is staggered or parallel; The mesh aperture of the second mesh is between that of the first mesh and that of the third mesh, and the mesh aperture of the first mesh is larger than that of the third mesh.

2. The preparation device of decarburized oat bran according to claim 1, characterized in that: The second processing component includes a cleaning tank, an agitator and an atomizing nozzle, wherein the cleaning tank is used to clean oat bran, the agitator is arranged at the bottom of the cleaning tank to fully mix the oat bran in the cleaning tank with water, and the atomizing nozzle is arranged above the cleaning tank to further clean the oat bran, wherein: The bottom of the cleaning tank is provided with a drain outlet for discharging sewage and a filter screen arranged on the drain outlet for preventing the oat bran from being lost.

3. The preparation device of decarburized oat bran according to claim 1, characterized in that: The desugaring unit comprises: An enzymolysis reaction tank, which is used to enzymolyze sugars in oat bran, wherein a first valve for controlling the amount and speed of enzyme addition and a first flow regulating valve for controlling the amount of water added are relatively arranged on the top outer side of the enzymolysis reaction tank, and a first stirring component is arranged inside the enzymolysis reaction tank to fully mix the enzyme, water and oat bran; The heating and cooling component is sleeved on the outer side of the bottom of the enzymolysis reaction tank to adjust the reaction temperature in the enzymolysis reaction tank.

4. The preparation device for decarburized oat bran according to claim 3, characterized in that: The degreasing unit comprises: An extraction tank is used to extract fat from oat bran. A second valve for controlling the amount of organic solvent added and a second flow regulating valve for controlling the amount of water added are arranged on the outer side of the top of the extraction tank. A second stirring component is arranged inside the extraction tank to fully mix the organic solvent, water and oat bran. A separation component, which is arranged at the bottom of the extraction tank and is used to separate the oat bran and the organic solvent; The recovery component is connected to the solvent outlet of the separation component and is used to recover the organic solvent.

5. The preparation device of decarboxylated oat bran according to claim 1, characterized in that: The control unit determines the sieve hole blockage ratios of the first sieve, the second sieve and the third sieve according to the sieve image, determines the blockage degree coefficients of the multi-layer sieves according to the sieve hole blockage ratios, and determines the adjustment method of the initial vibration frequency according to the blockage degree coefficient and a preset blockage coefficient.

6. The preparation device for decarburized oat bran according to claim 5, characterized in that: The control unit determines the adjustment method of the initial vibration frequency according to the comparison result between the blocking degree coefficient and the preset blocking coefficient, wherein: If the blocking degree coefficient is greater than the preset blocking coefficient, the initial vibration frequency is increased.

7. The preparation device of decarburized oat bran according to claim 1, characterized in that: The concentration increase rate is determined according to the concentration of the enzymatic solution at the several time points, and the control unit determines the increase amount of the enzyme according to the comparison result between the concentration increase rate and the preset increase rate.

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