Method for preparing high-protein flour using an extraction device with an anti-adhesion coating

Abstract

The application provides a method for preparing high-protein flour by using an anti-adhesion coating extraction device, and belongs to the technical field of flour processing. The silsesquioxane has low surface tension, can form a hydrophobic and oleophobic film on the surface of the flour, prevents the adsorption of water and oil, and thus avoids the adhesion of the flour; the silsesquioxane also has good film-forming property, can form a continuous and smooth film on the surface of the flour, makes the flour particles easy to slide, and thus prevents the adhesion; the polytetrafluoroethylene is a material with low surface energy and has good anti-adhesion property, but after being modified by lanthanum, the surface energy is further reduced, and the anti-adhesion property is further improved; in addition, the lanthanum element also has good thermal stability, can keep the coating stable at high temperature, and thus prevents the adhesion of the flour in the processing process; the application has simple process and low cost, and can extract a high proportion of high-protein flour from the wheat flour.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flour processing, and in particular to a method for preparing high-protein flour by using an extraction device with an anti-adhesion coating. BACKGROUND

[0002] As is known, the function of protein in the human body is completely different from other ingredients in diet, it is the only nitrogen-containing ingredient in food ingredients, and it is the only raw material for synthesizing muscle in the body and protein in the body. Once lacking, it will affect the normal metabolism of the human body, reduce immunity, and affect the normal development of the human body. However, all kinds of high-protein foods at present are non-gluten products, which are generally in the form of paste powder, so that the variety of high-protein foods is monotonous, which affects the appetite of children in normal growth and special patients for high-protein products, and cannot achieve the purpose of taking a large amount of protein. At the same time, a unique advantage of wheat flour is that it can form gluten and can be made into almost all varieties of food, thereby enhancing the appetite of people, but at the same time, it also has its shortcomings, that is, the content of protein in general flour is low, which makes the nutrition not comprehensive enough to make high-nutrition food.

[0003] Chinese patent CN219519145U relates to the technical field of flour processing, and in particular to a modern agricultural flour extraction and grading device, which comprises a box body, the box body comprises an extraction box, the top end of the extraction box is provided with a feeding hopper, the inner side of the extraction box is movably connected with a flour milling roller, and the bottom end of the extraction box is provided with a discharge port; the inner side of the extraction box is provided with a grading mechanism. The wheat in the inner side of the conveying box can be conveyed through the rotation of the spiral conveying rod, the wheat can be screened through the arrangement of the screen, the large-particle impurities are intercepted, the flour milling roller can better mill the wheat, the milled flour can be screened through the arrangement of the screen frame, the flour meeting the requirements is discharged through the discharge port, the flour not meeting the requirements is secondarily milled under the action of the rolling roller, the effect of grading milling can be achieved, the flour milling can be more thorough, and thus the accuracy of the flour can be guaranteed.

[0004] Chinese patent CN103238724B provides a wet gluten extraction and dehydration energy-saving device, which comprises a wet gluten collecting mechanism and a wet gluten dehydration mechanism, wherein the wet gluten collecting mechanism is connected with the wet gluten dehydration mechanism. The device not only reduces the water content of wet gluten, but also greatly improves the production quality and reduces the cost. The device has simple structure, convenient operation, and can maximize the use value under the same resource conditions, and is worth popularizing and applying.

[0005] Chinese patent CN1181286A: Small-scale grade flour processing unit, including horizontal classification round sieve, vertical cone sieve, high-efficiency flat sieve, impact flour loosening machine for skin mill and core mill and roller flour mill, the bran outlet of horizontal classification round sieve is connected with the impact flour loosening machine feed inlet, the impact flour loosening machine outlet is connected with the vertical cone sieve feed inlet, and the roller flour mill is matched to form a skin mill system; the core material outlet of high-efficiency flat sieve is connected with the impact flour loosening machine feed inlet, the impact flour loosening machine outlet is connected with the vertical cone sieve feed inlet, and the roller flour mill is matched to form a core mill system; the vertical cone sieve and high-efficiency flat sieve of the sieve system can extract flour at the same time, wherein the flour extracted by the vertical cone sieve is verified by the high-efficiency flat sieve.The unit has two independent air nets connected to form two flour paths of powder taking and discharging.The unit can be composed of 3-5 skins, 2-4 cores.

[0006] The above patent and the existing disclosed high-protein flour extraction process technology have complex production process and high cost; meanwhile, there are technical problems of low high-protein flour extraction rate and low wet gluten improvement rate. SUMMARY

[0007] The purpose of the present application is to provide a method for preparing high-protein flour by using an anti-adhesion coating extraction device to solve at least one technical problem in the background art. The high-protein flour extraction device in the present application mainly includes: an air pressure flour mill, a wind leakage device, a first-stage centrifugal unloading separator, a second-stage centrifugal unloading separator, a cloth tube dust collector, and a high-pressure fan.

[0008] In the present application, the air pressure flour mill is electrostatically sprayed with an anti-adhesion coating, the drying temperature is 90-100°C, and the drying time is 5-10h.

[0009] A method for preparing high-protein flour by using an anti-adhesion coating extraction device, the operation steps are:

[0010] S1: After the wheat flour is ground by the air pressure flour mill, it enters the first-stage centrifugal unloading separator, and the first-stage centrifugal unloading separator is provided with a controllable wind leakage device that can suck in external air;

[0011] S2: The wind leakage device sucks in external air into the first-stage centrifugal unloading separator, so that the air uniformly passes upwards through the first-stage centrifugal unloading separator and collides with the downward sinking powder flow, thereby appropriately reducing the sinking efficiency, and the coarse particle flour sinks in the first-stage centrifugal unloading separator;

[0012] S3: The fine particle flour in the wheat flour enters the second-stage centrifugal unloading separator along with the rising air, continues to sink, and obtains high-protein flour.

[0013] In the present application, the high-pressure fan is connected with the first-stage centrifugal unloading separator, the second-stage centrifugal unloading separator, and the cloth tube dust collector.

[0014] In the application, the air leakage device is a tubular plug-in air leakage device, a ring-shaped slit air leakage device, an adjustable ring-shaped slit air leakage device, an adjustable ring-shaped slit and separation chamber composite structure air leakage device, and an adjustable ring-shaped slit and double-ring slit type separation chamber composite structure air leakage device.

[0015] In the application, the wheat flour flow is 1200-1500 kg / h.

[0016] In the application, the total air volume of the high-pressure fan is 700-800 m 3 / h, the air leakage volume is 130-150 m 3 / h, and the air pressure is 6-7 kpa.

[0017] In the application, the coating preparation method is as follows:

[0018] According to mass parts, 100-120 parts of lanthanum modified polytetrafluoroethylene, 2-4 parts of titanate, 2-6 parts of quartz powder, 2-5 parts of titanium dioxide, 6-10 parts of boron nitride, and 2-4 parts of dodecanol ester are added, and then the temperature is raised to 350-480 DEG C, and high-speed stirring is carried out for 40-80 minutes to obtain an anti-adhesion coating; then the coating is loaded into an electrostatic spraying machine and sprayed onto the surface of the disassembled air pressure mill parts, and placed at 150-200 DEG C for 50-80 min, and then assembled to obtain an extraction device with an anti-adhesion coating.

[0019] In the application, the preparation method of the lanthanum modified polytetrafluoroethylene is as follows:

[0020] According to mass parts, 100-120 parts of lanthanum modified polytetrafluoroethylene, 2-4 parts of titanate, 2-6 parts of quartz powder, 2-5 parts of titanium dioxide, 6-10 parts of boron nitride, and 2-4 parts of dodecanol ester are added, and then the temperature is raised to 350-480 DEG C, and high-speed stirring is carried out for 40-80 minutes to obtain an anti-adhesion coating; then the coating is loaded into an electrostatic spraying machine and sprayed onto the surface of the disassembled air pressure mill parts, and placed at 150-200 DEG C for 50-80 min, and then assembled to obtain an extraction device with an anti-adhesion coating.

[0021] In the application, the preparation method of the lanthanum modified polytetrafluoroethylene is as follows:

[0022] According to mass parts, 100-120 parts of lanthanum modified polytetrafluoroethylene, 2-4 parts of titanate, 2-6 parts of quartz powder, 2-5 parts of titanium dioxide, 6-10 parts of boron nitride, and 2-4 parts of dodecanol ester are added, and then the temperature is raised to 350-480 DEG C, and high-speed stirring is carried out for 40-80 minutes to obtain an anti-adhesion coating; then the coating is loaded into an electrostatic spraying machine and sprayed onto the surface of the disassembled air pressure mill parts, and placed at 150-200 DEG C for 50-80 min, and then assembled to obtain an extraction device with an anti-adhesion coating.

[0023] In the application, the electrostatic spraying condition is set as follows: the electrostatic spraying speed is 0.001-0.01 mL / min, and the spraying time is 2-5 h.

[0024] The innovation of the present application is:

[0025] The amino-containing polytetrafluoroethylene is subjected to amino addition reaction with the methacryl cage silsesquioxane and the acrylic acid of lanthanum acrylate respectively to obtain the silsesquioxane and lanthanum modified polytetrafluoroethylene.

[0026] Compared with the prior art, the present application has the advantages of:

[0027] 1. The air leakage device can control a certain amount of air leakage, so that a certain amount of external air is sucked into the first-stage centrifugal unloading separator, and the air uniformly passes through the first-stage centrifugal unloading separator upward, collides with the sinking powder flow, and thus appropriately reduces the sinking efficiency of the wheat flour, so that the fine particles in the wheat flour cannot sink in the first-stage centrifugal unloading separator, but sink in the second-stage centrifugal unloading separator along the upward air, thereby improving the extraction rate of high-protein flour.

[0028] 2. The silsesquioxane has a low surface tension, can form a hydrophobic and oleophobic film on the surface of the flour, prevent the adsorption of water and oil, and thus avoid the adhesion of the flour; the silsesquioxane also has good film-forming property, can form a continuous and smooth film on the surface of the flour, and has anti-static property, so that the flour particles are easy to slide, thereby preventing adhesion; the polytetrafluoroethylene itself is a material with low surface energy and good anti-adhesion property, and after being modified by lanthanum, the surface energy is further reduced, and the anti-adhesion property is further improved; in addition, the lanthanum element also has good thermal stability, can keep the coating stable at high temperature, thereby preventing the adhesion of the flour during the processing process, reducing the loss of the flour, and thus improving the extraction rate of high-protein flour and the increase rate of wet gluten.

[0029] 3. The process is simple and low in cost, and can extract a high proportion of high-protein flour from wheat flour. DETAILED DESCRIPTION

[0030] Figure 1 It is a flow chart of the extraction device for preparing high-protein flour.

[0031] The correspondence between the reference signs and the component names is as follows:

[0032] 1. Air pressure flour mill; 2. Air leakage device; 3. First-stage centrifugal unloading separator; 4. Second-stage centrifugal unloading separator; 5. Cloth cylinder dust collector; 6. High-pressure air blower. DETAILED DESCRIPTION

[0033] The technical scheme of the present application is not limited to the following specific embodiments, but also includes any combination of the specific embodiments.

[0034] The embodiment is detected according to GB / T1355-2021 standard.

[0035]

[0036] Embodiment 1

[0037] A method for preparing high-protein flour by using a high-protein flour extraction device with an anti-adhesion coating, the high-protein flour extraction device mainly comprises: a pneumatic flour mill 1, an air leakage device 2, a first-stage centrifugal unloading separator 3, a second-stage centrifugal unloading separator 4, a cloth cylinder dust collector 5, and a high-pressure fan 6, characterized in that the pneumatic flour mill 1 part is electrostatically sprayed with an anti-adhesion coating, the drying temperature is 90 DEG C, and the drying time is 5h.

[0038] The operation steps are:

[0039] S1: After the wheat flour is ground by the pneumatic flour mill 1, it enters the first-stage centrifugal unloading separator 3, and the first-stage centrifugal unloading separator 3 is provided with a controllable air leakage device 2 for sucking external air;

[0040] S2: The air leakage device 2 sucks external air into the first-stage centrifugal unloading separator 3, so that the air uniformly passes upwards through the first-stage centrifugal unloading separator 3 and collides with the downward sinking powder flow, thereby appropriately reducing the sinking efficiency, and the coarse particle flour in the first-stage centrifugal unloading separator 3 sinks;

[0041] S3: The fine particle flour in the wheat flour enters the second-stage centrifugal unloading separator 4 along with the rising air, continues to sink, and high-protein flour is obtained.

[0042] The high-pressure fan 6 is connected to the first-stage centrifugal unloading separator 3, the second-stage centrifugal unloading separator 4, and the cloth cylinder dust collector 5.

[0043] The air leakage device 2 is a tubular plug-in air leakage device 2.

[0044] The flow rate of the wheat flour is 1200kg / h.

[0045] The total air volume of the high-pressure fan 6 is 700m 3 / h, the air leakage volume is 130m 3 / h, and the air pressure is 6kpa.

[0046] The coating preparation method is:

[0047] 100g of lanthanum-modified polytetrafluoroethylene, 2g of titanate, 2g of quartz powder, 2g of titanium dioxide, 6g of boron nitride, 2g of dodecanol ester, and heated to 350°C, high-speed stirring for 40 minutes, to obtain an anti-adhesion coating; then the coating is loaded into an electrostatic spraying machine to spray the surface of the disassembled air pressure grinding machine 1 part, and placed at 150°C for 50 minutes, and then assembled to obtain an anti-adhesion coating extraction device.

[0048] The preparation method of the lanthanum-modified polytetrafluoroethylene is:

[0049] In a reaction kettle, 100g of polytetrafluoroethylene with amino groups, 0.05g of methyl methacryl cage silsesquioxane CAS No.1204591-17, 0.5g of lanthanum acrylate, 500g of ethanol, and 6g of sodium ethoxide are added, stirred at 60°C for 30 minutes, filtered, dried, and lanthanum-modified polytetrafluoroethylene is obtained.

[0050] The preparation method of the polytetrafluoroethylene with amino groups is:

[0051] The polytetrafluoroethylene is plasma-modified in a plasma device in a mixed gas atmosphere of hydrogen and nitrogen with a volume ratio of 1:2, a 500W radio frequency power source plasma device, a radio frequency power source with a frequency of 10MHz, a gas flow rate of 10ml / min, and a treatment time of 30 minutes to obtain polytetrafluoroethylene with amino groups.

[0052] The electrostatic spraying conditions are set as follows: the electrostatic spraying speed is 0.001mL / min, and the spraying time is 2h.

[0053] Example 2

[0054] A method for preparing high-protein flour using an anti-adhesion coating extraction device, the high-protein flour extraction device mainly comprises: an air pressure grinding machine 1, a wind leakage device 2, a first-stage centrifugal unloading separator 3, a second-stage centrifugal unloading separator 4, a cloth cylinder dust collector 5, and a high-pressure fan 6, characterized in that the air pressure grinding machine 1 part is electrostatically sprayed with an anti-adhesion coating, the drying temperature is 95°C, and the drying time is 6h.

[0055] The operation steps are:

[0056] S1: After the wheat flour is ground by the air pressure grinding machine 1, it enters the first-stage centrifugal unloading separator 3, and the first-stage centrifugal unloading separator 3 is provided with a controllable wind leakage device 2 that can suck in external air;

[0057] S2: The wind leakage device 2 sucks in external air into the first-stage centrifugal unloading separator 3, so that the air uniformly passes upwards through the first-stage centrifugal unloading separator 3 and collides with the downward sinking powder flow, thereby appropriately reducing the sinking efficiency, and the relatively coarse particle flour sinks in the first-stage centrifugal unloading separator 3;

[0058] S3: fine particles of the wheat flour enter the second-stage centrifugal unloading separator 4 with the rising air, continue to settle, and high-protein flour is obtained.

[0059] The high-pressure fan 6 is connected to the first-stage centrifugal unloading separator 3, the second-stage centrifugal unloading separator 4, and the cloth-bag dust collector 5.

[0060] The air leakage device 2 is an annular slit air leakage device.

[0061] The wheat flour flow is 1300 kg / h.

[0062] The total air volume of the high-pressure fan 6 is 740 m 3 / h, the air leakage volume is 135 m 3 / h, and the air pressure is 6 kpa.

[0063] The coating preparation method is as follows:

[0064] 105 g of lanthanum-modified polytetrafluoroethylene, 3 g of titanate, 3 g of quartz powder, 3 g of titanium dioxide, 7 g of boron nitride, and 7 g of dodecanol ester are heated to 380℃, and high-speed stirring is performed for 50 minutes to obtain an anti-adhesion coating; then the coating is loaded into an electrostatic spraying machine and sprayed onto the surface of the disassembled air pressure flour mill 1 part, and placed at 160℃ for 60 min, and after assembly, an extraction device with an anti-adhesion coating is obtained.

[0065] The preparation method of the lanthanum-modified polytetrafluoroethylene is as follows:

[0066] In a reaction kettle, 105 g of amino-containing polytetrafluoroethylene, 0.2 g of methyl methacryl cage silsesquioxane CAS number: 1204591-17, 1 g of lanthanum acrylate, 550 g of ethanol, and 7 g of sodium ethoxide are stirred at 65℃ for 40 min, filtered, and dried to obtain lanthanum-modified polytetrafluoroethylene.

[0067] The preparation method of the amino-containing polytetrafluoroethylene is as follows:

[0068] The polytetrafluoroethylene is plasma-modified in a plasma device in a mixed gas atmosphere of hydrogen and nitrogen with a volume ratio of 1:3, a 500W radio frequency power source plasma device, a radio frequency power source with a frequency of 15MHz, a gas flow of 15ml / min, and a processing time of 40min to obtain amino-containing polytetrafluoroethylene.

[0069] The electrostatic spraying condition is set as follows: the electrostatic spraying speed is 0.005 mL / min, and the spraying time is 3h.

[0070] Example 3

[0071] The application discloses a method for preparing high-protein flour by using an extraction device with an anti-adhesion coating, and the high-protein flour extraction device mainly comprises an air pressure flour mill 1, a leakage device 2, a first-stage centrifugal unloading separator 3, a second-stage centrifugal unloading separator 4, a cloth tube dust collector 5 and a high-pressure fan 6, and is characterized in that the air pressure flour mill 1 is provided with an anti-adhesion coating which is electrostatically sprayed and dried at a temperature of 95 DEG C for 9 hours.

[0072] The operation steps are as follows:

[0073] S1: after the wheat flour is ground by the air pressure flour mill 1, the flour enters the first-stage centrifugal unloading separator 3, and the leakage device 2 which can control the suction of external air is arranged at the bottom of the first-stage centrifugal unloading separator 3;

[0074] S2: the leakage device 2 sucks the external air into the first-stage centrifugal unloading separator 3, so that the air uniformly passes upwards through the first-stage centrifugal unloading separator 3 and collides with the downward sinking flour flow, thereby appropriately reducing the sinking efficiency of the flour flow, and the relatively coarse particle flour sinks in the first-stage centrifugal unloading separator 3;

[0075] S3: the fine particle flour in the wheat flour enters the second-stage centrifugal unloading separator 4 along with the rising air, and continues to sink, so that the high-protein flour is obtained.

[0076] The high-pressure fan 6 is connected with the first-stage centrifugal unloading separator 3, the second-stage centrifugal unloading separator 4 and the cloth tube dust collector 5.

[0077] The leakage device 2 is a leakage device with a composite structure of an adjustable annular gap and a separation chamber.

[0078] The flow of the wheat flour is 1400 kg / h.

[0079] The total air volume of the high-pressure fan 6 is 780 m 3 / h, the leakage air volume is 145 m 3 / h, and the air pressure is 7 kpa.

[0080] The coating preparation method is as follows:

[0081] La-modified polytetrafluoroethylene 115 g, titanate 3 g, quartz powder 5 g, titanium white powder 4 g, boron nitride 9 g, dodecanol ester 3 g are heated to 450 DEG C, and high-speed stirring is conducted for 70 minutes, so that the anti-adhesion coating is obtained; then the coating is loaded into an electrostatic spraying machine and sprayed onto the surface of the disassembled air pressure flour mill 1, and after being placed at 190 DEG C for 70 minutes, the air pressure flour mill 1 with the anti-adhesion coating is obtained.

[0082] The preparation method of the La-modified polytetrafluoroethylene is as follows:

[0083] In the reaction kettle, 115 g of polytetrafluoroethylene with amino group, 0.4 g of methyl methacryl cage silsesquioxane CAS No: 1204591-17, 2 g of lanthanum acrylate, 650 g of ethanol, 9 g of sodium ethoxide, 65 ℃ stirring reaction for 50 min, after the reaction, filter, dry, get lanthanum modified polytetrafluoroethylene.

[0084] The preparation method of the polytetrafluoroethylene with amino group is:

[0085] The polytetrafluoroethylene is plasma modified in a plasma device in a mixed gas atmosphere of hydrogen and nitrogen with a volume ratio of 1:4, a 500 W radio frequency power source plasma device; the radio frequency power source is a frequency of 15 MHz; the gas flow is 25 ml / min, and the processing time is 50 min, to obtain the polytetrafluoroethylene with amino group.

[0086] The electrostatic spraying condition is set as follows: the electrostatic spraying speed is 0.008 mL / min, and the spraying time is 4 h.

[0087] Example 4

[0088] A method for preparing high-protein flour by using a high-protein flour extraction device with an anti-adhesion coating, the high-protein flour extraction device mainly comprises: a pneumatic flour mill 1, a air leakage device 2, a first-stage centrifugal unloading separator 3, a second-stage centrifugal unloading separator 4, a cloth cylinder dust collector 5, and a high-pressure fan 6, characterized in that the pneumatic flour mill 1 is coated with an anti-adhesion coating by electrostatic spraying, the drying temperature is 100 ℃, and the drying time is 10 h.

[0089] The operation steps are:

[0090] S1: After the wheat flour is ground by the pneumatic flour mill 1, the wheat flour enters the first-stage centrifugal unloading separator 3, and the air leakage device 2 capable of controlling the suction of external air is arranged at the bottom of the first-stage centrifugal unloading separator 3;

[0091] S2: The air leakage device 2 sucks the external air into the first-stage centrifugal unloading separator 3, so that the air uniformly passes upwards through the first-stage centrifugal unloading separator 3 and collides with the downward sinking powder flow, thereby appropriately reducing the sinking efficiency, and the coarse particle flour in the wheat flour sinks in the first-stage centrifugal unloading separator 3;

[0092] S3: The fine particle flour in the wheat flour enters the second-stage centrifugal unloading separator 4 along with the rising air, and continues to sink, to obtain the high-protein flour.

[0093] The high-pressure fan 6 is connected to the first-stage centrifugal unloading separator 3, the second-stage centrifugal unloading separator 4, and the cloth cylinder dust collector 5.

[0094] The air leakage device 2 is an air leakage device with a composite structure of an adjustable annular slit and a double-ring slit type separation chamber.

[0095] The flour flow rate is 1500kg / h.

[0096] The total air volume of the high-pressure fan 6 is 800m 3 / h, the air leakage volume is 150m 3 / h, and the air pressure is 7kpa.

[0097] The coating preparation method is:

[0098] The lanthanum-modified polytetrafluoroethylene 120g, titanate 4g, quartz powder 6g, titanium dioxide 5g, boron nitride 10g, dodecanol ester 4g, and heated to 480℃, high-speed stirring for 80 minutes, to obtain the anti-adhesion coating; then the coating is loaded into the electrostatic spraying machine and sprayed onto the surface of the disassembled air pressure mill 1 part, and placed at 200℃ for 80 minutes, and then assembled to obtain the extraction device with the anti-adhesion coating.

[0099] The preparation method of the lanthanum-modified polytetrafluoroethylene is:

[0100] In a reaction kettle, 120g of polytetrafluoroethylene with amino groups, 0.5g of methyl methacryl cage silsesquioxane CAS number: 1204591-17, 2.7g of lanthanum acrylate, 700g of ethanol, 10g of sodium ethoxide, and 70℃ stirring for 60 minutes, after the reaction, filter, dry, to obtain the lanthanum-modified polytetrafluoroethylene.

[0101] The preparation method of the polytetrafluoroethylene with amino groups is:

[0102] The polytetrafluoroethylene is plasma modified in a plasma device in a mixed gas atmosphere of hydrogen and nitrogen with a volume ratio of 1:5, a 500W radio frequency power source plasma device; the radio frequency power source is 20MHz in frequency; the gas flow rate is 30ml / min, and the treatment time is 60 minutes, to obtain the polytetrafluoroethylene with amino groups.

[0103] The electrostatic spraying condition is set as follows: the electrostatic spraying speed is 0.01mL / min, and the spraying time is 5h.

[0104] Comparative Example 1

[0105] This comparative example is the same as Example 1 except that no anti-adhesion coating is added.

[0106] Comparative Example 2

[0107] This comparative example is the same as Example 1 except that no polytetrafluoroethylene with amino groups is added.

[0108] Comparative Example 3

[0109] The comparative example is the same as example 1 except that the methacryl cage silsesquioxane is not added.

[0110] Table 1 Specific embodiment extraction rate and wet gluten improvement rate

[0111] Extraction rate / % Wet gluten increase / % Example 1 1.8 46.3 Example 2 2.2 48.7 Example 3 2.4 49.5 Example 4 2.5 50.8 Comparative Example 1 0.7 36.4 Comparative Example 2 1.0 39.1 Comparative Example 3 1.1 40.6

[0112] Through the data analysis of the above examples and comparative examples, the present application can extract a higher proportion of high-protein flour from wheat flour.

Claims

1. A method for producing high protein flour using an extraction device with an anti-sticking coating, characterized in that: The anti-adhesion coating extraction device comprises an air pressure flour mill (1), an air leakage device (2), a first-stage centrifugal unloading separator (3), a second-stage centrifugal unloading separator (4), a cloth tube dust collector (5), and a high-pressure fan (6). The method for preparing the high-protein flour is: S1: After the wheat flour is ground by the air pressure flour mill (1), the wheat flour enters the first-stage centrifugal unloading separator (3), and the bottom of the first-stage centrifugal unloading separator (3) is provided with the air leakage device (2) capable of sucking external air; S2: The air leakage device (2) sucks the external air into the first-stage centrifugal unloading separator (3), so that the air uniformly passes upwards through the first-stage centrifugal unloading separator (3) and collides with the downwardly settled flour flow, thereby reducing the settlement efficiency, and the coarse particle flour settles in the first-stage centrifugal unloading separator (3); S3: The fine particle flour in the wheat flour enters the second-stage centrifugal unloading separator (4) along with the rising air and continues to settle, thereby obtaining the high-protein flour; The preparation method of the anti-adhesion coating of the air pressure flour mill (1) component is as follows: The anti-adhesion coating is obtained by adding, in parts by mass, lan-modified polytetrafluoroethylene 100-120 parts, titanate 2-4 parts, quartz powder 2-6 parts, titanium white powder 2-5 parts, boron nitride 6-10 parts, dodecanol ester 2-4 parts, and then heating to 350-480 DEG C and stirring at high speed for 40-80 minutes; then the coating is sprayed to the surface of the disassembled air pressure flour mill 1 component by using an electrostatic spraying machine, and the component is placed at 150-200 DEG C for 50-80 min, and then assembled to obtain the anti-adhesion coating of the air pressure flour mill (1) component; The preparation method of the lan-modified polytetrafluoroethylene is as follows: The lan-modified polytetrafluoroethylene is obtained by adding, in parts by mass, amino-containing polytetrafluoroethylene 100-120 parts, 0.05-0.5 parts of a methylpropenyl cage silsesquioxane, 0.5-2.7 parts of lan-acrylic acid, 500-700 parts of ethanol, 6-10 parts of sodium ethoxide, and stirring and reacting at 60-70 DEG C for 30-60 min; after the reaction is completed, the product is filtered and dried; The preparation method of the amino-containing polytetrafluoroethylene is as follows: The amino-containing polytetrafluoroethylene is obtained by modifying the polytetrafluoroethylene in a plasma device in a mixed gas atmosphere of hydrogen and nitrogen with a volume ratio of 1:2-5, using a 500 W radio frequency power source plasma device; the radio frequency power source has a frequency of 10-20 MHz; the gas flow is 10-30 ml / min, and the processing time is 30-60 min.

2. The method of claim 1 for preparing high protein flour using an extraction device with an anti-sticking coating, characterized by: The high-pressure fan (6) is connected to the first-stage centrifugal unloading separator (3), the second-stage centrifugal unloading separator (4), and the cloth tube dust collector (5).

3. The method of claim 1, wherein the method of preparing high protein flour using an extraction device with an anti-sticking coating is characterized by: The air leakage device (2) is a tubular plug-in plate air leakage device, a ring-shaped slit air leakage device, an adjustable ring-shaped slit air leakage device, an adjustable ring-shaped slit and separation chamber composite structure air leakage device, or an adjustable ring-shaped slit and double-ring slit type separation chamber composite structure air leakage device.

4. The method of claim 1 for preparing high protein flour using an extraction device with an anti-sticking coating, characterized by: The wheat flour flow is 1200-1500 kg / h.

5. The method of claim 1, wherein the method of preparing high protein flour using an extraction device with an anti-sticking coating is characterized by: The high-pressure fan (6) has a total air volume of 700-800 m 3 / h, an air leakage of 130-150 m 3 / h, and an air pressure of 6-7 kpa.

6. The method of claim 1, wherein the method of preparing high protein flour using an extraction device with an anti-sticking coating is characterized by: The electrostatic spraying condition is set as follows: electrostatic spraying speed is 0.001-0.01 mL / min, and spraying time is 2-5 h.

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