Method for preparing rice noodles by utilizing enzymolysis technology

Abstract

The invention relates to the technical field of rice flour fermentation, in particular to a method for preparing rice flour by using an enzymolysis technology. Comprising the following steps: S1, crushing rice, soaking, absorbing water, softening, draining, adding water, blending into rice milk, and adding an enzyme preparation into the rice milk to form enzymolysis rice milk; s2, the enzymolysis rice milk is poured into an enzymolysis cavity in enzymolysis equipment, an enzymolysis plate with holes in the enzymolysis cavity can extrude the enzymolysis rice milk in the enzymolysis cavity, the enzymolysis rice milk is pressed to penetrate through the holes in the enzymolysis plate back and forth, and finally enzymolysis liquid is formed; s3, the enzymatic hydrolysate is filtered and concentrated to form a concentrated solution, the concentrated solution is subjected to spray drying to form powder, and enzyme rice flour is obtained; the enzymolysis rice milk is put into the enzymolysis cavity with the enzymolysis plate with the holes, so that the enzymolysis plate moves in the enzymolysis sealed enzymolysis process in the enzymolysis cavity, the enzymolysis rice milk in the enzymolysis cavity can penetrate through the holes in the enzymolysis plate to be dispersed, and the situation that the enzymolysis effect of rice noodles is affected due to the fact that the enzymolysis rice milk is caked is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of rice flour fermentation, and specifically relates to a method for preparing rice flour using enzymatic hydrolysis technology. Background Art

[0002] Preparing rice flour using enzymatic hydrolysis technology utilizes the catalytic properties of enzymes to decompose and transform components such as starch in rice to prepare rice flour. Under specific conditions, the enzyme reacts with the rice slurry, changing the component structure of the rice to obtain rice flour with specific qualities; enzymatically hydrolyzed rice flour retains good nutrition, has a good taste and is easy to digest, suitable for people of all ages, especially beneficial to special needs groups. The specific steps include: a. Raw material treatment: Select high-quality rice, remove impurities, and it can be crushed (or not), then soak for several hours to more than ten hours to make it absorb water and soften; b. Rice slurry preparation: Drain the soaked rice and add water to prepare a uniform rice slurry; c. Enzymatic hydrolysis reaction: Add enzyme preparations such as amylase to the rice slurry and react at a suitable temperature and pH for several hours, continuously stirring during this period to promote full contact between the enzyme and the rice slurry; d. Filtration and separation: After the reaction, filter the enzymolysis solution to remove impurities such as incompletely enzymolyzed rice residues; e. Concentration treatment: Use vacuum concentration or other methods to reduce the water content of the enzymolysis solution; f. Drying and forming: Spray-dry the concentrated solution into powder, sieve to obtain enzymatically hydrolyzed rice flour, which can be further processed and formed.

[0003] During the enzymatic hydrolysis process, the rice residues are prone to caking. This is mainly because the enzymatic hydrolysis reaction produces viscous substances, which cause the rice residue particles to stick to each other. As the reaction progresses, the viscous substances increase, and the agglomeration phenomenon of the rice residues intensifies. At the same time, the existing stirring methods are difficult to disperse the rice residues inside the cake, resulting in the internal substances not being able to fully contact with the enzyme, and the enzymatic hydrolysis is insufficient. This not only affects the quality of the rice flour, such as taste, nutritional components, etc., but also reduces production efficiency and increases production costs. Moreover, there are differences in the consistency and other aspects of different batches of rice slurry, and the traditional process is difficult to adapt well, further affecting the product quality stability. Summary of the Invention

[0004] To make up for the deficiencies of the prior art, the present invention proposes a method for preparing rice flour using enzymatic hydrolysis technology. The present invention places the enzymatically hydrolyzed rice slurry into an enzymatic hydrolysis cavity with a perforated enzymatic hydrolysis plate, so that the enzymatic hydrolysis plate moves during the sealed enzymatic hydrolysis process in the enzymatic hydrolysis cavity, and then the enzymatically hydrolyzed rice slurry in the enzymatic hydrolysis cavity will pass through the holes on the enzymatic hydrolysis plate to be dispersed, avoiding the caking of the enzymatically hydrolyzed rice slurry and affecting the enzymatic hydrolysis effect of the rice flour.

[0005] The technical solution adopted by the present invention to solve its technical problems is: The method for preparing rice flour using enzymatic hydrolysis technology described in the present invention includes the following steps:

[0006] S1: Crush the rice, soak it to absorb water and soften it, then drain it, and then add water to prepare a rice slurry, and add an enzyme preparation to the rice slurry to form an enzymatically hydrolyzed rice slurry;

[0007] S2: Pour the enzymatically hydrolyzed rice slurry into the enzymatic hydrolysis chamber in the enzymatic hydrolysis equipment. The perforated enzymatic hydrolysis plate in the enzymatic hydrolysis chamber will squeeze the enzymatically hydrolyzed rice slurry in the enzymatic hydrolysis chamber. The enzymatically hydrolyzed rice slurry is pressed to pass back and forth through the holes in the enzymatic hydrolysis plate, and finally an enzymatically hydrolyzed solution is formed.

[0008] S3: The enzymatically hydrolyzed solution is filtered and concentrated to form a concentrated solution, and the concentrated solution is spray-dried into powder to obtain enzymatically hydrolyzed rice powder.

[0009] Among them, the enzymatic hydrolysis equipment used in S2 includes an intermediate shell and end caps rotatably and sealingly connected to both ends of the intermediate shell; a central column is fixedly connected between the two end caps; a partition plate is fixedly connected to the outer wall of the central column; a plurality of the partition plates are in sealing contact with the inner wall of the end cap and the inner wall of the intermediate shell; a plurality of the partition plates divide the internal space of the intermediate shell into a plurality of enzymatic hydrolysis chambers; a perforated enzymatic hydrolysis plate is movably and sealingly connected in the enzymatic hydrolysis chamber.

[0010] Preferably, a feed hopper is communicated with the upper outer wall of the intermediate shell; a discharge hopper is communicated with the lower outer wall of the intermediate shell; an annular shell is provided on the outer side of the end cap; both the annular shell and the intermediate shell are fixedly connected to a bracket; an annular groove is provided on the side of the annular shell facing the intermediate shell; a corrugated ring is fixedly connected in the annular groove; a track groove is provided on the side of the corrugated ring close to the intermediate shell; a track rod is connected to the side of the enzymatic hydrolysis plate close to the annular shell; the track rod passes through the end cap and is slidably and sealingly connected to the end cap; the end of the track rod away from the enzymatic hydrolysis plate is movably connected in the track groove; a motor is fixedly connected to the inner side of the annular shell; the output shaft of the motor is fixedly connected to the center of the end cap.

[0011] Preferably, the number of the annular shells is two, and they are symmetrically arranged on both sides of the intermediate shell; two enzymatic hydrolysis plates are slidably and sealingly connected in the same enzymatic hydrolysis chamber; the sides of the two enzymatic hydrolysis plates away from each other are movably connected in the corresponding track grooves through track rods; the two enzymatic hydrolysis plates approach or separate from each other as the partition plate rotates.

[0012] Preferably, the corrugated ring is formed by connecting the corrugated part and the smooth part end to end; the distance from the corrugated part to the end cap changes in a corrugated shape in the rotation direction of the end cap; the distance from the smooth part to the end cap remains constant in the rotation direction of the end cap; the feed hopper is located within the range of the smooth part; the discharge hopper is located within the range of the corrugated part.

[0013] Preferably, the corrugated part is formed by connecting the first corrugated strip and the second corrugated strip end to end; the distance from the first corrugated strip to the end cap decreases in the rotation direction of the end cap; the distance from the second corrugated strip to the end cap increases in the rotation direction of the end cap; the distances from the first corrugated strip and the second corrugated strip to the end cap change in a corrugated shape.

[0014] Preferably, an arc-shaped groove is provided on one side of the two enzymatic hydrolysis plates facing away from each other; an arc-shaped block is movably connected inside the arc-shaped groove along the arc direction; the end of the track rod is fixedly connected to the arc-shaped block; the partition plate is arranged in a corrugated shape along the axial direction of the central column; the troughs and peaks on adjacent partition plates are aligned; the enzymatic hydrolysis plate can fluctuate back and forth in the circumferential direction of the end cover under the guidance of the partition plate.

[0015] Preferably, the two enzymatic hydrolysis plates in the same enzymatic hydrolysis cavity fluctuate in opposite directions.

[0016] Preferably, a first through hole is provided on the enzymatic hydrolysis plate; a staggered groove is arranged inside the enzymatic hydrolysis plate; a staggered plate is movably and hermetically connected in the staggered groove; a second through hole is provided on the staggered plate; one end of the staggered plate close to the central column is connected to the inner wall of the staggered groove through a first spring; a push groove is provided through the end of the staggered groove far from the central column; a push block fixedly connected to the staggered plate is slidably connected in the push groove; the end of the push block far from the central column is arc-shaped.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, by putting the enzymatically hydrolyzed rice slurry into the enzymatic hydrolysis cavity with a perforated enzymatic hydrolysis plate, the enzymatic hydrolysis plate can move during the enzymatic hydrolysis and sealing process in the enzymatic hydrolysis cavity, so that the enzymatically hydrolyzed rice slurry in the enzymatic hydrolysis cavity can pass through the holes on the enzymatic hydrolysis plate and be dispersed, avoiding the agglomeration of the enzymatically hydrolyzed rice slurry and affecting the enzymatic hydrolysis effect of the rice flour.

[0019] 2. Since the distances from each part of the smooth part to the end cover are the same in the present invention, the track rod in the smooth part will not drive the enzymatic hydrolysis plate to move in the enzymatic hydrolysis cavity. When the enzymatic hydrolysis plate moves in the enzymatic hydrolysis cavity, it needs to overcome the fluid resistance. When the enzymatic hydrolysis plate does not move in the enzymatic hydrolysis cavity, the resistance of the track rod in the track groove is reduced, thus saving the energy for the motor to drive the end cover to rotate and making the preparation of rice flour more energy-saving and environmentally friendly.

[0020] 3. When the two enzymatic hydrolysis plates approach each other in the present invention, they can also knead the enzymatically hydrolyzed rice slurry in the middle position of the enzymatic hydrolysis cavity. Frictional heat energy is generated during the kneading process of the enzymatically hydrolyzed rice slurry, which can heat the heat transfer of the enzymatically hydrolyzed rice slurry, making the temperature of the enzymatically hydrolyzed rice slurry more uniform, facilitating the maintenance of the enzymatic hydrolysis reaction at an appropriate temperature, and improving the activity and stability of the enzyme. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 is the method flow chart of the present invention;

[0023] Figure 2 is the three-dimensional view of the enzymatic hydrolysis equipment in the present invention;

[0024] Figure 3 is a perspective view of removing the annular shell in the enzymatic hydrolysis equipment of the present invention;

[0025] Figure 4 is a schematic diagram of the cooperation between the track rod and the track groove in the present invention;

[0026] Figure 5 is a position diagram of the annular groove in the present invention;

[0027] Figure 6 is an internal structure diagram of the middle shell in the present invention;

[0028] Figure 7 is Figure 6 an enlarged view of part A in;

[0029] Figure 8 is a perspective view of the enzymatic hydrolysis plate in the present invention;

[0030] Figure 9 is a sectional view of the enzymatic hydrolysis plate.

[0031] In the figure: middle shell 1, feed hopper 11, discharge hopper 12, upper bracket 13, end cover 2, central column 21, partition plate 3, enzymatic hydrolysis chamber 31, enzymatic hydrolysis plate 4, arc groove 41, arc block 42, first through hole 43, stagger groove 44, stagger plate 45, second through hole 46, first spring 47, push groove 48, push block 49, annular shell 5, annular groove 51, motor 52, corrugated ring 6, track groove 61, corrugated part 62, first corrugated strip 621, second corrugated strip 622, smooth part 63, track rod 7. Detailed Embodiments

[0032] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0033] As Figures 1 to 9 shown, the present invention includes the following embodiments:

[0034] Embodiment 1: A method for preparing rice flour by enzymatic hydrolysis technology, comprising the following steps:

[0035] S1: After crushing rice and soaking it to absorb water and soften it, drain the water, then add water to prepare rice slurry, and add enzyme preparation to the rice slurry to form enzymatic hydrolysis rice slurry;

[0036] S2: Pour the enzymatic hydrolysis rice slurry into the enzymatic hydrolysis chamber 31 in the enzymatic hydrolysis equipment. The perforated enzymatic hydrolysis plate 4 in the enzymatic hydrolysis chamber 31 will squeeze the enzymatic hydrolysis rice slurry in the enzymatic hydrolysis chamber 31. The enzymatic hydrolysis rice slurry is pressed to pass through the holes on the enzymatic hydrolysis plate 4 back and forth, and finally forms enzymatic hydrolysis liquid;

[0037] S3: The enzymatic hydrolysis liquid is filtered and concentrated to form a concentrated liquid, and the concentrated liquid is spray-dried into powder to obtain enzymatic rice flour;

[0038] Among them, the enzymatic hydrolysis device used in S2 includes an intermediate shell 1 and end caps 2 rotatably and sealingly connected to both ends of the intermediate shell 1; a central column 21 is fixedly connected between the two end caps 2; a partition plate 3 is fixedly connected to the outer wall of the central column 21; the plurality of partition plates 3 are in sealing contact with the inner walls of the end caps 2 and the inner wall of the intermediate shell 1; the plurality of partition plates 3 divide the inner space of the intermediate shell 1 into a plurality of enzymatic hydrolysis chambers 31; a perforated enzymatic hydrolysis plate 4 is movably and sealingly connected in the enzymatic hydrolysis chamber 31.

[0039] In this embodiment, a feed hopper 11 is communicatively provided on the upper outer wall of the intermediate shell 1; a discharge hopper 12 is communicatively provided on the lower outer wall of the intermediate shell 1; an annular shell 5 is provided on the outer side of the end cap 2; both the annular shell 5 and the intermediate shell 1 are fixedly connected to a bracket 13; an annular groove 51 is provided on the side of the annular shell 5 facing the intermediate shell 1; a corrugated ring 6 is fixedly connected in the annular groove 51; a track groove 61 is provided on the side of the corrugated ring 6 close to the intermediate shell 1; a track rod 7 is connected to the side of the enzymatic hydrolysis plate 4 close to the annular shell 5; the track rod 7 passes through the end cap 2 and is slidably and sealingly connected to the end cap 2; one end of the track rod 7 away from the enzymatic hydrolysis plate 4 is movably connected in the track groove 61; a motor 52 is fixedly connected to the inner side of the annular shell 5; the output shaft of the motor 52 is fixedly connected to the center of the end cap 2.

[0040] First, the raw materials are processed, specifically, high-quality rice is selected, impurities in the rice are removed, and then the rice is crushed and then soaked in water for several hours to make it absorb water and soften. Then, rice slurry is prepared, specifically, the soaked rice is drained, water is added to be mixed into a uniform rice slurry, and then an enzymatic reaction is performed, and enzyme preparations such as amylase are added to the rice slurry to form an enzymatic rice slurry, and then the enzymatic rice slurry is poured along the feed hopper 11, and the enzymatic rice slurry will enter the enzymatic chamber 31 connected to the feed hopper 11 along the feed hopper 11. After the space in the enzymatic chamber 31 is filled with the enzymatic rice slurry, the rotation of the motor 52 will drive the fixed end cover 2 to rotate, and the two end covers 2 and The central column 21 and the partition plate 3 will rotate, so that the multiple enzymolysis chambers 31 will be connected to the feed hopper 11 in sequence. The enzymolysis chamber 31 filled with enzymolysis rice slurry will be staggered from the feed hopper 11 after the motor 52 rotates. The enzymolysis chamber 31 filled with enzymolysis rice slurry will move in an arc shape from top to bottom around the central column 21 in a sealed state. The perforated enzymolysis plate 4 in the enzymolysis chamber 31 will move with the movement of the enzymolysis chamber 31. The track rod 7 fixedly connected to the enzymolysis plate 4 will move along the track groove 61 with the movement of the enzymolysis chamber 31. The end of the track rod 7 away from the corresponding enzymolysis plate 4 will not be disconnected during the movement in the track groove 61, and the track groove 61 The track rod 7 is arranged on the corrugated ring 6, and the position of the track rod 7 in the track groove 61 will cycle close to and away from the end cover 2, so that the track rod 7 will drive the enzymolysis plate 4 to cycle back and forth in the enzymolysis chamber 31, and the range of the enzymolysis plate 4 in the enzymolysis chamber 31 is consistent with the space in the enzymolysis chamber 31, so that during the activity of the enzymolysis plate 4 in the enzymolysis chamber 31, the enzymolysis rice slurry in the enzymolysis chamber 31 will be pressed through the holes on the enzymolysis plate 4 to be dispersed, so that the enzymolysis rice slurry in the enzymolysis chamber 31 is difficult to agglomerate, and the enzymolysis of the enzymolysis rice slurry is more uniform. Compared with stirring, it has the characteristic of no dead angle, and when the enzymolysis chamber 31 is fed from the feed hopper The enzymolysis is completed on the path between 11 and the discharge hopper 12 to form an enzymolysis solution. The enzymolysis chamber 31 is finally aligned with the discharge hopper 12 after the motor 52 rotates. The enzymolysis solution in the enzymolysis chamber 31 will be poured out along the discharge hopper 12. The enzymolysis chamber 31 after the pouring is completed will move from bottom to top as the motor 52 rotates and be connected to the feed hopper 11 again. The feed hopper 11 will continuously feed, and the discharge hopper 12 will continuously discharge. The enzymolysis in the enzymolysis chamber 31 changes with the speed of the motor 52; the enzymolysis solution poured out from the discharge hopper 12 will be filtered and concentrated to form a concentrated solution, and finally the concentrated solution will be spray-dried to form powder, that is, the preparation of rice noodles is completed;

[0041] The present invention places the enzymatically hydrolyzed rice slurry into an enzymatic hydrolysis chamber 31 with a perforated enzymatic hydrolysis plate 4, so that the enzymatic hydrolysis plate 4 is moved during the enzymatic hydrolysis sealing and enzymatic hydrolysis process in the enzymatic hydrolysis chamber 31, and then the enzymatically hydrolyzed rice slurry in the enzymatic hydrolysis chamber 31 is dispersed through the holes on the enzymatic hydrolysis plate 4, thereby preventing the enzymatically hydrolyzed rice slurry from agglomerating and affecting the enzymatic hydrolysis effect of rice noodles.

[0042] Embodiment 2: The number of the annular shells 5 is two, and they are symmetrically arranged on both sides of the middle shell 1; two enzyme digestion plates 4 are slidably and sealingly connected in the same enzyme digestion cavity 31; one side of the two enzyme digestion plates 4 away from each other is movably connected in the corresponding track groove 61 through a track rod 7; the two enzyme digestion plates 4 approach or move away from each other as the partition plate 3 rotates.

[0043] In this embodiment, the corrugated ring 6 is formed by connecting the corrugated part 62 and the smooth part 63 end to end; the distance from the corrugated part 62 to the end cover 2 changes in a corrugated shape in the rotation direction of the end cover 2; the distance from the smooth part 63 to the end cover 2 remains constant in the rotation direction of the end cover 2; the feed hopper 11 is within the range of the smooth part 63; the discharge hopper 12 is within the range of the corrugated part 62.

[0044] In this embodiment, the corrugated part 62 is formed by connecting the first corrugated strip 621 and the second corrugated strip 622 end to end; the distance from the first corrugated strip 621 to the end cover 2 is set to decrease in the rotation direction of the end cover 2; the distance from the second corrugated strip 622 to the end cover 2 is set to increase in the rotation direction of the end cover 2; the distances from the first corrugated strip 621 and the second corrugated strip 622 to the end cover 2 change in a corrugated shape.

[0045] When the two end covers 2 are driven by the motor 52 and rotate, all the partition plates 3 in the two end covers 2 will rotate with the rotation of the end covers 2, and the enzymolysis chamber 31 will move with the rotation of the partition plates 3. Two enzymolysis plates 4 are connected in a sliding seal in a single enzymolysis chamber 31. The two corresponding enzymolysis plates 4 are movably connected in the track groove 61 by the track rod 7 on one side away from each other. The track groove 61 is arranged on the corrugated ring 6. The corrugated ring 6 is composed of a corrugated portion 62 and a smooth portion 63. When the feed hopper 11 is located in the range of the smooth portion 63 of the corrugated ring 6 and the track rod 7 is located in the range of the smooth portion 63, the track rod 7 will not drive the corresponding enzymolysis plate 4 to move in the corresponding enzymolysis chamber 31, so that the enzymolysis chamber 31 connected to the feed hopper 11 is not connected to the feed hopper 11. The enzymolysis plate 4 remains stable to prevent the enzymolysis plate 4 in the enzymolysis chamber 31 from moving during the feeding process and causing the enzymolysis rice slurry to be squeezed out, so that the enzymolysis rice slurry can be fed smoothly. The enzymolysis chamber 31 filled with enzymolysis rice slurry will be staggered with the feeding hopper 11 after the motor 52 rotates, so that the enzymolysis chamber 31 drives the track rod 7 from the smooth part 63 to enter the first corrugated strip 621 area in the corrugated part 62 and move. During the movement of the track rod 7 in the first corrugated strip 621, the enzymolysis plate 4 will be driven to move in the enzymolysis chamber 31, so that the two enzymolysis plates 4 in the enzymolysis chamber 31 move closer to each other. During the process of the two enzymolysis plates 4 approaching each other, the enzymolysis rice slurry between the two enzymolysis plates 4 will be squeezed into the enzymolysis chamber 31 space on both sides along the holes on the enzymolysis plates 4. As the cavity 31 continues to move, the enzymolysis plate 4 in the enzymolysis cavity 31 will drive the track rod 7 from the first corrugated strip 621 area to the second corrugated strip 622 area. During the movement of the track rod 7 in the second corrugated strip 622 area, the track rod 7 will drive the enzymolysis plate 4 to move again in the enzymolysis cavity 31, so that the two enzymolysis plates 4 in the enzymolysis cavity 31 move away from each other. During the movement of the two enzymolysis plates 4 away from each other, the space of the enzymolysis cavity 31 on the side where the two enzymolysis plates 4 move away from each other will be squeezed, so that the enzymolysis rice slurry at the end of the enzymolysis cavity 31 is pressed through the holes on the enzymolysis plate 4 and enters the middle space of the enzymolysis cavity 31. As the enzymolysis cavity 31 continues to move, the track rod 7 will enter the first corrugated strip 621 area from the second corrugated strip 622, so that the two enzymolysis plates 4 in the enzymolysis cavity 31 move away from each other. The enzymolysis plates 4 move back and forth approaching and away from each other under the area where the track rod 7 is located at the corrugated portion 62, so that the enzymolysis rice slurry in the enzymolysis chamber 31 is further squeezed out, and the two enzymolysis plates 4 are in the same enzymolysis chamber 31. In the process of moving away from each other, the enzymolysis rice slurry sprayed from the holes on the enzymolysis plates 4 will impact in opposite directions, making the enzymolysis rice slurry more dispersed; the enzymolysis chamber 31 completes the enzymolysis of rice slurry to form an enzymolysis solution within the range of movement from the feed hopper 11 to the discharge hopper 12, and the discharge hopper 12 is located under the range of the corrugated portion 62, so that after the enzymolysis chamber 31 is aligned with the discharge hopper 12, the enzymolysis plates 4 in the enzymolysis chamber 31 remain active, so that the rice residue in the enzymolysis solution in the enzymolysis plates 4 is loosened and easier to fall off, so that the enzymolysis solution in the enzymolysis chamber 31 and the residual rice residue flow out more thoroughly;Next, the enzymatic hydrolysis chamber 31 will move past the discharge hopper 12. The enzymatic hydrolysis chamber 31 will drive the track rod 7 from the corrugated portion 62 into the smooth portion 63. During the movement of the enzymatic hydrolysis chamber 31 within the range of the smooth portion 63, since the distance from each part of the smooth portion 63 to the end cap 2 remains unchanged, the track rod 7 within the smooth portion 63 will not drive the enzymatic hydrolysis plate 4 to move within the enzymatic hydrolysis chamber 31. When the enzymatic hydrolysis plate 4 moves within the enzymatic hydrolysis chamber 31, it needs to overcome fluid resistance. However, when the enzymatic hydrolysis plate 4 does not move within the enzymatic hydrolysis chamber 31, the resistance of the track rod 7 within the track groove 61 is reduced, thereby saving the energy for the motor 52 to drive the end cap 2 to rotate, making the preparation of rice flour more energy-saving and environmentally friendly. Additionally, in order to further increase the extrusion frequency of the enzymatic hydrolysis plate 4 within the enzymatic hydrolysis chamber 31, the first corrugated strip 621 and the second corrugated strip 622 are again set in a corrugated shape, that is, the distances from the first corrugated strip 621 and the second corrugated strip 622 to the end cap 2 change in a corrugated manner. Thus, during the movement of the track rod 7 along the first corrugated strip 621 or the second corrugated strip 622, the track rod 7 makes small-scale back-and-forth movements while maintaining the general movement direction unchanged, increasing the movement frequency of the enzymatic hydrolysis plate 4 within the enzymatic hydrolysis chamber 31, preventing the enzymatic hydrolysis chamber 31 from moving too slowly, resulting in too low a movement frequency of the enzymatic hydrolysis plate 4 and affecting the dispersion effect of the enzymatically hydrolyzed rice slurry, making the enzymatic hydrolysis effect of the rice slurry more uniform.

[0046] Embodiment 3: An arc-shaped groove 41 is provided on the mutually facing sides of the two enzymatic hydrolysis plates 4 that are away from each other; an arc-shaped block 42 is movably connected along the arc direction inside the arc-shaped groove 41; the end of the track rod 7 is fixedly connected to the arc-shaped block 42; the partition plate 3 is arranged in a corrugated shape along the axial direction of the central column 21; the troughs and peaks on adjacent partition plates 3 are aligned; the enzymatic hydrolysis plate 4 can fluctuate back and forth in the circumferential direction of the end cap 2 under the guidance of the partition plate 3.

[0047] In this embodiment, the two enzymatic hydrolysis plates 4 within the same enzymatic hydrolysis chamber 31 fluctuate in opposite directions.

[0048] During the movement of the enzymatic hydrolysis plate 4 as the enzymatic hydrolysis chamber 31 rotates around the central column 21, the enzymatic hydrolysis plate 4 moves within the enzymatic hydrolysis chamber 31 under the cooperation of the track rod 7 and the track groove 61. During the movement, the enzymatic hydrolysis plate 4 moves along the inner wall of the enzymatic hydrolysis chamber 31. Since the enzymatic hydrolysis plate 4 is corrugated in the axial direction of the central column 21, when the two enzymatic hydrolysis plates 4 in the enzymatic hydrolysis chamber 31 move away from each other, they fluctuate back and forth in the rotation direction of the end cap 2. During the fluctuation of the enzymatic hydrolysis plate 4 in the rotation direction of the end cap 2, it will squeeze the enzymatic hydrolysis slurry at the end of the enzymatic hydrolysis chamber 31 to achieve the kneading of the enzymatic hydrolysis slurry. In addition, when the two enzymatic hydrolysis plates 4 approach each other, since the fluctuation directions of the two enzymatic hydrolysis plates 4 in the rotation direction of the end cap 2 are opposite, it enables the enzymatic hydrolysis slurry at the middle position of the enzymatic hydrolysis chamber 31 to be kneaded during the approaching process of the two enzymatic hydrolysis plates 4. The enzymatic hydrolysis slurry generates frictional heat energy during the kneading process, which can heat the heat transfer of the enzymatic hydrolysis slurry, making the temperature of the enzymatic hydrolysis slurry more uniform, conducive to maintaining the enzymatic hydrolysis reaction at an appropriate temperature, and improving the activity and stability of the enzyme; the enzymatic hydrolysis plate 4 in the enzymatic hydrolysis chamber 31 communicating with the discharge hopper 12 fluctuates back and forth in the rotation direction of the end cap 2, so that the enzymatic hydrolysis liquid can be poured out more thoroughly.

[0049] Example 4: A first through hole 43 is provided on the enzymatic hydrolysis plate 4; a staggered groove 44 is provided inside the enzymatic hydrolysis plate 4; a staggered plate 45 is movably and sealingly connected inside the staggered groove 44; a second through hole 46 is provided on the staggered plate 45; one end of the staggered plate 45 close to the central column 21 is connected to the inner wall of the staggered groove 44 through a first spring 47; a push groove 48 is provided through the end of the staggered groove 44 far from the central column 21; a push block 49 fixedly connected to the staggered plate 45 is slidably connected inside the push groove 48; the end of the push block 49 far from the central column 21 is arc-shaped.

[0050] After the enzymatic hydrolysis plate 4 in the enzymatic hydrolysis chamber 31 is staggered from the feed hopper 11 and the discharge hopper 12, the push block 49 is pressed to drive the staggered plate 45 to move inside the staggered groove 44 along the push groove 48, and the second through hole 46 on the staggered plate 45 is aligned with the first through hole 43 on the enzymatic hydrolysis plate 4, so that both sides of the enzymatic hydrolysis plate 4 are kept communicating to meet the requirement that the enzymatic hydrolysis slurry passes through the first through hole 43 and the second through hole 46 to achieve the dispersion of the enzymatic hydrolysis slurry and avoid caking; when the enzymatic hydrolysis plate 4 in the enzymatic hydrolysis chamber 31 is aligned with the discharge hopper 12, the first spring 47 pushes the staggered plate 45 to move inside the staggered groove 44, and the push block 49 will extend out of the push groove 48, and the second through hole 46 is staggered from the first through hole 43 as the staggered plate 45 moves, so that both sides of the enzymatic hydrolysis plate 4 are disconnected. In this way, during the movement of the enzymatic hydrolysis plate 4 along the enzymatic hydrolysis chamber 31 and in the axial direction of the central column 21, the enzymatic hydrolysis liquid can be more thoroughly pushed out of the enzymatic hydrolysis chamber 31 to avoid waste caused by residue.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the Figure 1 orientation or positional relationship shown, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0052] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing rice flour using enzymolysis technology, characterized in that: The following steps are involved: S1: Crush the rice, soak it to absorb water and soften it, then drain it, add water to prepare rice slurry, and add enzyme preparation to the rice slurry to form enzymatic rice slurry; S2: Pour the enzymatically hydrolyzed rice slurry into the enzymatic hydrolysis chamber of the enzymatic hydrolysis equipment. The perforated enzymatic hydrolysis plate in the enzymatic hydrolysis chamber will squeeze the enzymatically hydrolyzed rice slurry in the enzymatic hydrolysis chamber. The enzymatically hydrolyzed rice slurry is pressed back and forth through the holes on the enzymatic hydrolysis plate to finally form an enzymatic hydrolyzate. S3: The enzymatic hydrolysate is filtered and concentrated to form a concentrated solution, and the concentrated solution is spray-dried into powder to obtain enzyme rice powder; Among them, the enzymatic hydrolysis equipment used in S2 includes an intermediate shell and end covers that are rotatably and sealably connected at two ends of the intermediate shell; a central column is fixedly connected between the two end covers; the outer wall of the central column is fixedly connected to a partition plate; multiple partition plates are in sealing contact with the inner walls of the end covers and the inner wall of the intermediate shell; multiple partition plates divide the internal space of the intermediate shell into multiple enzymatic hydrolysis chambers; and the enzymatic hydrolysis chamber is movably and sealably connected to a perforated enzymatic hydrolysis plate.

2. A method for preparing rice flour using enzymolysis technology according to claim 1, characterized in that: The upper outer wall and the lower outer wall of the intermediate shell are connected to the feed hopper and the discharge hopper respectively; an annular shell is provided on the outer side of the end cover; an annular groove is provided on the side of the annular shell facing the intermediate shell; a corrugated ring is fixedly connected in the annular groove; a track groove is provided on the side of the corrugated ring close to the intermediate shell; the enzymolysis plate is connected to a track rod on the side close to the annular shell; the track rod passes through the end cover and is slidably and sealedly connected to the end cover; the end of the track rod away from the enzymolysis plate is movably connected in the track groove; the end cover is driven by a motor.

3. A method for preparing rice flour using enzymolysis technology according to claim 2, characterized in that: There are two annular shells, which are symmetrically arranged on both sides of the middle shell; two enzymolysis plates are connected in a sliding and sealing manner in the same enzymolysis chamber.

4. A method for preparing rice flour using enzymolysis technology according to claim 2, characterized in that: The corrugated ring is composed of a corrugated part and a smooth part connected end to end and combined; the distance from the corrugated part to the end cover changes in a corrugated shape in the rotation direction of the end cover; the distance from the smooth part to the end cover is constant in the rotation direction of the end cover.

5. A method for preparing rice flour using enzymolysis technology according to claim 4, characterized in that: The corrugated portion is formed by connecting the first corrugated strip and the second corrugated strip end to end; the distance from the first corrugated strip to the end cover is set to decrease in the rotation direction of the end cover; the distance from the second corrugated strip to the end cover is set to increase in the rotation direction of the end cover; the distances from the first corrugated strip and the second corrugated strip to the end cover change in a corrugated shape.

6. A method for preparing rice flour using enzymolysis technology according to claim 3, characterized in that: An arc groove is provided on one side of the two enzymolysis plates away from each other; the arc block is movably connected inside the arc groove along the arc direction; the end of the track rod is fixedly connected to the arc block; the partition plate is arranged in a corrugated shape in the axial direction of the central column; the troughs and peaks on adjacent partition plates are aligned; the enzymolysis plate can fluctuate back and forth in the circumferential direction of the end cover under the guidance of the partition plate.

7. A method for preparing rice flour using enzymolysis technology according to claim 6, characterized in that: The two enzymolysis plates in the same enzymolysis chamber fluctuate in opposite directions.

8. A method for preparing rice flour using enzymolysis technology according to claim 6, characterized in that: A first through hole is arranged on the enzymatic hydrolysis plate; a staggered groove is arranged inside the enzymatic hydrolysis plate; the staggered plate is movably sealed in the staggered groove; a second through hole is arranged on the staggered plate; the end of the staggered plate close to the center column is connected to the inner wall of the staggered groove through a first spring; a push groove is arranged through the end of the staggered groove away from the center column; a push block fixed to the staggered plate is slidably connected in the push groove; the end of the push block away from the center column is arc-shaped.

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