Production method of starch sugar

Abstract

The invention relates to the technical field of starch sugar production, in particular to a starch sugar production method which comprises the following steps: S1, raw material preparation: sequentially cleaning, crushing and separating raw materials, extracting starch, refining the starch, and removing impurities in the starch; s2, liquefying: mixing starch with water to prepare starch milk, and then adding alpha-amylase to form liquefied liquid; s3, performing saccharification; s4, decolorizing and filtering to remove pigments and impurities in the sugar liquid, and removing solid impurities through a filtering device to obtain clear sugar liquid; s5, purification: removing inorganic salts and organic impurities in the sugar liquid through ion exchange resin to further improve the purity; and S6, concentration and crystallization. According to the starch sugar production device, raw materials such as corn and wheat are used for producing starch sugar, in the process, sugar liquid is fed into the annular filtering plate through the feeding pipe, continuous filtering of the sugar liquid is achieved through the annular filtering plate, filter residues are reserved in the annular filtering cylinder, and it is guaranteed that filtrate can be fully collected.

Description

Technical Field

[0001] The present invention relates to the technical field of starch sugar production, and specifically to a production method of starch sugar. Background Art

[0002] Sugars obtained by using starches-containing grains, tubers, etc. as raw materials and prepared by acid method, acid-enzyme method or enzyme method, including maltose, glucose, fructose syrup, etc., are collectively called starch sugars. During the production process of starch sugars, a filter is required to remove impurities.

[0003] When the existing filter performs filtration separation, when the filtered residue reaches a certain level, it needs to be cleaned, so filtration needs to be suspended, and the next filtration can only be carried out after cleaning, with poor continuity. There are also belt filters, that is, filters using a filter belt that can rotate in a cycle. Although it can filter continuously, the filtered residue is directly taken away by the filter belt and is also likely to take away the sugar solution at the same time. The residue contains a certain amount of sugar solution, and this part of the sugar solution cannot be effectively collected. Summary of the Invention

[0004] The present invention provides a production method of starch sugar to solve the problems raised in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: A production method of starch sugar, including the following steps, S1. Raw material preparation: Wash, crush, and separate the raw materials in sequence, extract starch, and refine the starch to remove impurities therein; S2. Liquefaction: Mix starch with water to form a starch milk, then add α-amylase to decompose starch molecules into short-chain dextrins to form a liquefied solution; S3. Saccharification: Cool the liquefied solution to 55 - 60 °C, and add saccharifying enzyme to hydrolyze dextrin into small molecule sugars to form a sugar solution; S4. Decoloration and filtration: Remove pigments and impurities in the sugar solution, and remove solid impurities through a filtration device to obtain a clarified sugar solution; S5. Purification: Remove inorganic salts and organic impurities in the sugar solution through ion exchange resin to further improve the purity; S6. Concentration and crystallization: Concentrate the sugar solution through an evaporator, and obtain solid sugar through cooling crystallization; The filtration device used in step S4 includes a feed pipe, an annular filter plate, and a driving mechanism. The bottom end of the feed pipe is connected to the bottom of the annular filter plate and can feed the sugar solution into the annular filter plate. The driving mechanism is connected to the annular filter plate and can drive it to rotate.

[0006] As a preferred technical solution of the present invention, the weight concentration of starch in the starch milk in step S2 is 30% - 40%; In step S2, after adding α-amylase, the starch milk is maintained at a temperature between 90 and 110 °C.

[0007] As a preferred technical solution of the present invention, the filtering device further includes a box body. The top end of the feed pipe extends outside the box body. The bottom end of the feed pipe is fixedly installed with two communicating distribution pipes. The outer ends of the two distribution pipes away from each other are fixedly installed with outer blocking discs. Inner discharge holes are formed on the inner bottom side walls of the two distribution pipes. Two annular filter plates are installed on the bottom side inner wall of the box body through a driving mechanism. The two annular filter plates are arranged outside the two distribution pipes. The two outer blocking discs are respectively in contact with the inner walls of the two annular filter plates. Extrusion discharge mechanisms are installed on the side parts of the two annular filter plates close to each other. Sealing mechanisms are installed on the two distribution pipes. The two sealing mechanisms are cooperatively installed with the two inner discharge holes. The two sealing mechanisms are cooperatively installed with the two extrusion discharge mechanisms. The extrusion discharge mechanism includes two reset components installed on the vertical side parts of the annular filter plate. An inner blocking disc is installed on the two reset components. A circular groove is formed on the side part of the inner blocking disc. A pressure-receiving disc is slidably installed in the circular groove. The outer side part of the pressure-receiving disc is adapted to the inner wall of the annular filter plate. An extrusion component is installed on the side part of the pressure-receiving disc close to the inner blocking disc. The extrusion component is cooperatively installed with the two reset components. A return component is installed on the side part of the inner blocking disc.

[0008] As a preferred technical solution of the present invention, the reset component includes two moving rods fixedly installed on the vertical side parts of the annular filter plate. Two reset holes are formed on the side part of the inner blocking disc. The two moving rods respectively penetrate through the two reset holes and are both fixedly installed with moving blocks. Moving springs are sleeved on the two moving rods. One ends of the two moving springs are respectively fixedly installed on the side parts of the two moving blocks. The other ends of the two moving springs are fixedly installed on the side part of the inner blocking disc.

[0009] As a preferred technical solution of the present invention, the extrusion component includes two reset blocks fixedly installed on the vertical inner wall of the circular groove. Reset springs are fixedly installed on the side parts of the two reset blocks away from each other. Plug rods are fixedly installed at the ends of the two reset springs away from each other. Two jacks are formed on the inner wall of the circular groove. The two jacks are respectively communicated with the two reset holes. The two plug rods respectively penetrate through the two jacks. Slots are formed on the side parts of the two moving rods close to each other. The two plug rods are respectively corresponding to the positions of the two slots. Push rods are rotatably installed at the ends of the two plug rods close to each other. The ends of the two push rods away from each other are rotatably installed on the side part of the pressure-receiving disc.

[0010] As a preferred technical solution of the present invention, the return mechanism includes two connecting blocks fixedly installed on the side of the inner retaining disc. Rotating rods are rotatably installed at the ends of the two connecting blocks away from each other. A sliding block is rotatably installed at the end of the two rotating rods away from the connecting blocks. A conical ring is fixedly installed on the outer side of the annular filter plate. Two T-shaped grooves are formed in the inner wall and the side of the conical ring. T-shaped sliders are slidably installed in the two T-shaped grooves. The side parts of the two T-shaped sliders respectively extend out of the two T-shaped grooves and are fixedly connected to the side parts of the two sliding blocks. Compression wheels are rotatably installed at the ends of the two sliding blocks away from the rotating rods.

[0011] As a preferred technical solution of the present invention, the return mechanism further includes an arc-shaped extrusion column fixedly installed on the inner wall of the top side of the feed pipe. The side of the arc-shaped extrusion column close to the compression wheel is inclined, and the two compression wheels correspond to the inclined side parts of the arc-shaped extrusion column.

[0012] As a preferred technical solution of the present invention, the sealing mechanism includes a fixed ring fixedly sleeved on the distribution pipe. Four guide rods are fixedly installed on the side of the fixed ring away from the feed pipe. A sealing sleeve is slidably sleeved on the distribution pipe. The inner wall of the sealing sleeve is in contact with the outer side of the distribution pipe. Round holes are formed in the inner wall of the circular groove and the center position of the side of the pressure receiving disc. The sealing sleeve is slidably installed in the two round holes. Four guide grooves are formed in the side of the sealing sleeve close to the fixed ring. The four guide rods respectively extend into the four guide grooves and are fixedly installed with guide springs. The ends of the four guide springs away from the guide rods are respectively fixedly installed on the inner walls of the four guide grooves. Outgoing material holes are formed in the inner wall of the bottom side of the sealing sleeve, and the outgoing material holes correspond to the positions of the inner outgoing material holes. A blocking block is fixedly installed on the top of the sealing sleeve, and the blocking block corresponds to the position of the pressure receiving disc.

[0013] As a preferred technical solution of the present invention, the driving mechanism includes a horizontal telescopic rod fixedly installed on the inner wall of the bottom side of the box body. A residue box is fixedly installed at the output end of the horizontal telescopic rod. Liquid collecting boxes are fixedly installed on both sides of the residue box. The two liquid collecting boxes respectively correspond to the positions of the two annular filter plates. The residue box corresponds to the positions of the two conical rings. Two brackets are fixedly installed on the top of each of the two liquid collecting boxes. Rotating rings are fixedly installed at the tops of the two brackets on the same side. Annular grooves are formed in the annular side parts of the annular filter plates, and the two rotating rings are respectively rotatably sleeved in the two annular grooves.

[0014] As a preferred technical solution of the present invention, the driving mechanism further includes L-shaped plates fixedly installed on the mutually remote side parts of the two liquid collecting boxes. Stepping motors are fixedly installed on the mutually remote vertical side parts of the two L-shaped plates. Output shafts of the two stepping motors respectively penetrate through the vertical side parts of the two L-shaped plates and are both fixedly installed with small gears. Outer gear rings are fixedly installed on the mutually remote side parts of the two annular filter plates. The two outer gear rings are respectively meshed with the two small gears.

[0015] As a preferred technical solution of the present invention, two sliding columns are fixedly installed at the bottoms of the residue box and the two liquid collecting boxes. Two T-shaped sliding rails are fixedly installed on the bottom inner wall of the box body. The two sliding columns are respectively slidably installed on the two T-shaped sliding rails.

[0016] Compared with the prior art, the present invention provides a production method of starch sugar, having the following beneficial effects: In the present invention, raw materials such as corn and wheat are used to produce starch sugar. During the process, the feed pipe feeds the sugar liquid into the annular filter plate, and continuous filtration of the sugar liquid is achieved through the annular filter plate. The filter residue remains in the annular filter cylinder, ensuring that the filtrate can be fully collected. And because the driving mechanism drives the annular filter plate to rotate, blockage of the annular filter plate can be avoided.

[0017] In the present invention, feeding can be carried out through the feed pipe. The liquefied material enters the two distribution pipes through the feed pipe and is discharged into the annular filter plate through a corresponding inner discharge hole and outer discharge hole. The driving mechanism enables the annular filter plate to rotate, thereby avoiding blockage during filtration and improving the filtration effect. When residues accumulate on one annular filter plate and need to be cleaned, the driving mechanism switches to the other annular filter plate for filtration. During the switching, the residues in the previously filtered annular filter plate are squeezed, so that the liquid in the residues is discharged, improving the solid-liquid separation effect while continuously filtering.

[0018] In the present invention, the stepping motor located on one side of the annular filter plate is started. The output shaft of the stepping motor rotates to drive the small gear to rotate. The small gear rotates to drive the outer gear ring to rotate. The outer gear ring is coaxially arranged with the annular filter plate. The rotation of the outer gear ring drives the annular filter plate to rotate. The rotation of the annular filter plate enables the material located in the annular filter plate to be turned over, thereby avoiding blockage during filtration and improving the filtration effect.

[0019] In the present invention, the pressure plate slides within the circular groove under pressure. The sliding of the pressure plate drives the rotation of two push rods. The rotation of the two push rods drives the two insertion rods to approach each other, causing deformation of the two return springs. When the residue is under a certain pressure and contains less liquid at this time, the two return springs reach a certain degree of deformation, causing the two insertion rods to move out of the two slots respectively. Under the action of the two moving springs, the inner retaining plate moves. The movement of the inner retaining plate drives the movement of the pressure plate, separating it from the annular filter plate. The residue can fall into the conical ring through the opening between the pressure plate and the annular filter plate and be guided to the residue box through the conical ring to complete the collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the filtering device; Figure 2 is a first-perspective three-dimensional schematic diagram of the present invention (after the box body and one of the sealing sleeves are cut open); Figure 3 is a second-perspective three-dimensional schematic diagram of the present invention (after the box body and one of the sealing sleeves are cut open); Figure 4 is Figure 3 an enlarged view of part A in Figure 5 is Figure 3 an enlarged view of part B in Figure 6 is a three-dimensional diagram of the connection of the left moving rod, push rod, insertion rod, reset block, return spring and inner retaining plate; Figure 7 is a three-dimensional diagram of the connection of the left inner retaining plate and the moving rod; Figure 8 is a three-dimensional diagram of the connection of the left stepping motor, L-shaped plate, external gear ring, annular filter plate, bracket, rotating ring and conical ring; Figure 9 is a three-dimensional diagram of the arc-shaped extrusion column; Figure 10 is a first-perspective three-dimensional diagram of the connection of the material distribution pipe, sealing sleeve and pressure plate after the right annular filter plate is cut open; Figure 11 is a second-perspective three-dimensional diagram of the connection of the material distribution pipe, sealing sleeve and inner retaining plate after the right annular filter plate is cut open.

[0021] In the figure: 1, feed pipe; 2, box body; 3, material distribution pipe; 4, liquid collection box; 5, residue box; 6, horizontal telescopic rod; 7, T-shaped slide rail; 8, sliding column; 9, stop block; 10, outer retaining disc; 11, L-shaped plate; 12, conical ring; 13, bracket; 14, rotating ring; 15, annular filter plate; 16, moving spring; 17, moving block; 18, moving rod; 19, inner retaining disc; 20, connecting block; 21, arc-shaped extrusion column; 22, sliding block; 23, T-shaped slider; 24, pressure wheel; 25, rotating rod; 26, pressure plate; 27, fixed ring; 28, guide rod; 29, guide spring; 30, sealing sleeve; 31, return spring; 32, return block; 33, inserting rod; 34, push rod; 35, inserting slot; 36, stepper motor; 37, pinion; 38, external gear ring; 39, inner discharge hole; 40, outer discharge hole. Specific implementation manner

[0022] The following further describes the present invention in conjunction with specific embodiments. However, those skilled in the art should understand that the detailed description given here in conjunction with the accompanying drawings is for better explanation. The structure of the present invention necessarily extends beyond these limited embodiments, and for some equivalent replacement schemes or common means, no detailed description will be given herein, but they still fall within the protection scope of this application.

[0023] Figures 1 to 11 This is the best embodiment of the present invention. The following further describes the present invention in conjunction with the attached Figures 1 to 11 drawings.

[0024] The present invention discloses a production method of starch sugar, which includes the following steps: S1. Raw material preparation: Wash, crush, and separate the raw materials in sequence, extract starch, and refine the starch to remove impurities therein; the raw materials can be corn, wheat, etc. S2. Liquefaction: Mix starch with water to form a starch milk, and then add α-amylase to decompose starch molecules into short-chain dextrins to form a liquefied liquid. S3. Saccharification: Cool the liquefied liquid to 55 - 60 °C, and add saccharifying enzyme to hydrolyze dextrin into small molecule sugars to form a sugar solution. S4. Decolorization and filtration: Remove pigments and impurities in the sugar solution, and remove solid impurities through a filtration device to obtain a clarified sugar solution. S5. Purification: Remove inorganic salts and organic impurities in the sugar solution through ion exchange resin to further improve the purity. S6. Concentration and crystallization: Concentrate the sugar solution through an evaporator, and obtain solid sugar through cooling crystallization; such as glucose.

[0025] The weight concentration of starch in the starch milk in step S2 is 30% - 40%; after adding α-amylase in step S2, the starch milk is maintained between 90 - 110 °C.

[0026] The filtering device adopted in step S4 includes a box body 2, a feed pipe 1, an annular filter plate 15 and a driving mechanism. The top of the box body 2 is fixedly installed with the feed pipe 1, the top end of the feed pipe 1 extends outside the box body 2, the bottom end of the feed pipe 1 is fixedly installed with two communicating distribution pipes 3, the mutually remote ends of the two distribution pipes 3 are fixedly installed with outer baffle plates 10, inner discharge holes 39 are formed on the inner walls of the bottom sides of the two distribution pipes 3, two annular filter plates 15 are installed on the inner wall of the bottom side of the box body 2 through the driving mechanism, the two annular filter plates 15 are arranged outside the two distribution pipes 3, the two outer baffle plates 10 are respectively in contact with the inner walls of the two annular filter plates 15, extrusion discharge mechanisms are installed on the mutually close sides of the two annular filter plates 15, sealing mechanisms are installed on the two distribution pipes 3, the two sealing mechanisms are installed in cooperation with the two inner discharge holes 39, and the two sealing mechanisms are installed in cooperation with the two extrusion discharge mechanisms; The extrusion discharge mechanism includes two reset components installed on the vertical sides of the annular filter plate 15, an inner baffle plate 19 is installed on the two reset components, a circular groove is formed on the side of the inner baffle plate 19, a pressure receiving plate 26 is slidably installed in the circular groove, the outer side of the pressure receiving plate 26 is adapted to the inner wall of the annular filter plate 15, an extrusion component is installed on the side of the pressure receiving plate 26 close to the inner baffle plate 19, the extrusion component is installed in cooperation with the two reset components, and a return component is installed on the side of the inner baffle plate 19.

[0027] With the above structure: feeding can be carried out through the feed pipe 1, the sugar solution enters the two distribution pipes 3 through the feed pipe 1 and is discharged into one of the annular filter plates 15 through a corresponding inner discharge hole 39 and an outer discharge hole 40. The driving mechanism is used to rotate the annular filter plate 15 to avoid blockage during filtration and improve the filtration effect. When impurities accumulate on one annular filter plate 15 and need to be cleaned, the driving mechanism is used to switch to the other annular filter plate 15 for filtration. During the switching, the impurities in the previously filtered annular filter plate 15 will be extruded so that the liquid in the impurities is discharged, improving the solid-liquid separation effect while continuously filtering.

[0028] The reset component includes two moving rods 18 fixedly installed on the vertical sides of the annular filter plate 15. Two reset holes are formed on the side of the inner baffle plate 19. The two moving rods 18 respectively penetrate through the two reset holes and are fixedly installed with moving blocks 17. Moving springs 16 are sleeved on the two moving rods 18. One ends of the two moving springs 16 are respectively fixedly installed on the sides of the two moving blocks 17, and the other ends of the two moving springs 16 are fixedly installed on the side of the inner baffle plate 19. Through the arrangement of the moving springs 16, the inner baffle plate 19 can be driven to move.

[0029] Such as Figure 6 and Figure 7As shown in the figure, the extrusion assembly includes two reset blocks 32 fixedly installed on the vertical inner wall of the circular groove. On the side parts of the two reset blocks 32 away from each other, reset springs 31 are fixedly installed. On the end parts of the two reset springs 31 away from each other, inserting rods 33 are fixedly installed. Two inserting holes are formed on the inner wall of the circular groove, and the two inserting holes are respectively communicated with the two reset holes. The two inserting rods 33 respectively penetrate through the two inserting holes. Slots 35 are formed on the side parts of the two moving rods 18 close to each other. The positions of the two inserting rods 33 correspond to those of the two slots 35 respectively. On the end parts of the two inserting rods 33 close to each other, push rods 34 are rotatably installed. On the side part of the pressure-receiving disc 26, the end parts of the two push rods 34 away from each other are rotatably installed. When the pressure-receiving disc 26 is under pressure and slides in the circular groove, the sliding of the pressure-receiving disc 26 drives the two push rods 34 to rotate. The rotation of the two push rods 34 drives the two inserting rods 33 to approach each other, and the two reset springs 31 are deformed. When the residue is under a certain pressure and contains less liquid at this time, the two reset springs 31 reach a certain deformation, so that the two inserting rods 33 respectively move out of the two slots 35. Under the action of the two moving springs 16, the inner retaining disc 19 moves. The movement of the inner retaining disc 19 drives the pressure-receiving disc 26 to move and thus separate from the annular filter plate 15. The residue can fall into the conical ring 12 through the opening between the pressure-receiving disc 26 and the annular filter plate 15 and be guided to the residue box 5 through the conical ring 12 to complete the collection.

[0030] As Figure 3 and Figure 4 shown in the figure, the return mechanism includes two connecting blocks 20 fixedly installed on the side part of the inner retaining disc 19. On the end parts of the two connecting blocks 20 away from each other, rotating rods 25 are rotatably installed. On the end parts of the two rotating rods 25 away from the connecting blocks 20, sliding blocks 22 are rotatably installed. A conical ring 12 is fixedly installed on the outer side part of the annular filter plate 15. Two T-shaped grooves are formed on the inner wall and the side part of the conical ring 12. In the two T-shaped grooves, T-shaped sliders 23 are slidably installed. The side parts of the two T-shaped sliders 23 respectively extend out of the two T-shaped grooves and are fixedly connected to the side parts of the two sliding blocks 22 respectively. On the end parts of the two sliding blocks 22 away from the rotating rods 25, pressure-receiving wheels 24 are rotatably installed. The movement of the sliding block 22 drives the rotating rod 25 to rotate in the reverse direction, thereby pulling the connecting block 20 to move. The movement of the connecting block 20 drives the inner retaining disc 19 to move relative to the moving rod 18. The movement of the inner retaining disc 19 deforms the moving spring 16. The movement of the inner retaining disc 19 drives the pressure-receiving disc 26 to enter the annular filter plate 15. When the slot 35 on the moving rod 18 corresponds to the inserting rod 33, under the action of the reset spring 31, the inserting rod 33 enters the slot 35, thus completing the connection between the moving rod 18 and the inner retaining disc 19.

[0031] As Figure 3 、 Figure 4 and Figure 9As shown, the return mechanism also includes an arc-shaped extrusion column 21 fixedly mounted on the inner wall of the top side of the box body 2, and the side of the arc-shaped extrusion column 21 close to the pressure wheel 24 is inclined, and the two pressure wheels 24 correspond to the inclined side of the arc-shaped extrusion column 21. When the pressure wheel 24 contacts the inclined side of the arc-shaped extrusion column 21, the pressure wheel 24 is squeezed so that the sliding block 22 slides close to the annular filter plate 15.

[0032] like Figure 5 As shown, the sealing mechanism includes a fixed ring 27 fixedly sleeved on the distribution pipe 3, four guide rods 28 are fixedly installed on the side of the fixed ring 27 away from the feed pipe 1, a sealing sleeve 30 is slidably sleeved on the distribution pipe 3, the inner wall of the sealing sleeve 30 is in contact with the outer side of the distribution pipe 3, circular holes are provided on the inner wall of the circular groove and the side center of the pressure plate 26, the sealing sleeve 30 is slidably installed in the two circular holes, four guide grooves are provided on the side of the sealing sleeve 30 close to the fixed ring 27, four guide rods 28 extend into the four guide grooves respectively and are fixedly installed with guide springs 29, the ends of the four guide springs 29 away from the guide rods 28 are fixedly installed on the inner walls of the four guide grooves respectively, outfeed holes 40 are provided on the inner wall of the bottom side of the sealing sleeve 30, the outfeed holes 40 correspond to the positions of the inner discharge holes 39, a stopper 9 is fixedly installed on the top of the sealing sleeve 30, and the stopper 9 corresponds to the position of the pressure plate 26. When in use, the inner discharge hole 39 on one side is staggered with the outer discharge hole 40, and the inner discharge hole 39 on the other side corresponds to the outer discharge hole 40, the inner baffle plate 19 moves to contact the block 9 on the same side, the inner baffle plate 19 squeezes the block 9 to move the sealing sleeve 30, and the movement of the sealing sleeve 30 causes the four guide springs 29 to deform. When the outer discharge hole 40 is located in the annular filter plate 15, the sealing sleeve 30 continues to move so that the outer discharge hole 40 on the sealing sleeve 30 corresponds to the position of the inner discharge hole 39, and the material can enter through the inner discharge hole 39 and the outer discharge hole 40. Similarly, the inner baffle plate 19 is separated from the side of the block 9. Since the four guide springs 29 are in a deformed state, the outer discharge hole 40 is slowly separated from the inner discharge hole 39, so that the sealing sleeve 30 moves to cover the inner discharge hole 39 so that it no longer discharges material.

[0033] like Figure 3As shown in the figure, the driving mechanism includes a horizontal telescopic rod 6 fixedly installed on the inner wall of the bottom side of the box body 2. The output end of the horizontal telescopic rod 6 is fixedly installed with a residue box 5 for collecting solid residues. Liquid collecting boxes 4 are fixedly installed on both sides of the residue box 5 for collecting liquids. The two liquid collecting boxes 4 correspond to the positions of the two annular filter plates 15 respectively, and the residue box 5 corresponds to the positions of the two conical rings 12. Two brackets 13 are fixedly installed on the tops of the two liquid collecting boxes 4. The tops of the two brackets 13 on the same side are fixedly installed with a rotating ring 14. Annular grooves are formed on the annular sides of the annular filter plates 15, and the two rotating rings 14 are respectively rotatably sleeved in the two annular grooves. Through the arrangement of the annular grooves and the rotating rings 14, the annular filter plates 15 can be limited, so that they can only rotate and cannot move forward or backward. At the same time, the rotating rings 14 are located at the edges of the annular filter plates 15, so that the filtering of the annular filter plates 15 will not be affected.

[0034] As Figure 3 and Figure 8 shown in the figure, the driving mechanism further includes L-shaped plates 11 fixedly installed on the mutually remote side parts of the two liquid collecting boxes 4. Stepping motors 36 are fixedly installed on the mutually remote vertical side parts of the two L-shaped plates 11. The output shafts of the two stepping motors 36 respectively penetrate through the vertical side parts of the two L-shaped plates 11 and are both fixedly installed with small gears 37. Outer gear rings 38 are fixedly installed on the mutually remote side parts of the two annular filter plates 15. The two outer gear rings 38 are respectively meshed with the two small gears 37. Start the stepping motor 36 on one side of the annular filter plate 15. The output shaft of the stepping motor 36 rotates to drive the small gear 37 to rotate. The small gear 37 rotates to drive the outer gear ring 38 to rotate. The outer gear ring 38 and the annular filter plate 15 are coaxially arranged. The rotation of the outer gear ring 38 drives the annular filter plate 15 to rotate. The rotation of the annular filter plate 15 enables the materials located inside the annular filter plate 15 to be turned over, so as to avoid being blocked during filtration and improve the filtration effect.

[0035] As Figure 2 shown in the figure, two sliding columns 8 are fixedly installed on the bottoms of the residue box 5 and the two liquid collecting boxes 4. Two T-shaped sliding rails 7 are fixedly installed on the inner wall of the bottom side of the box body 2. The two sliding columns 8 are respectively slidably installed on the two T-shaped sliding rails 7. The advantage of such an arrangement is that it is convenient to support the residue box 5 and the two liquid collecting boxes 4 so that they can slide left and right.

[0036] Working principle and usage process of the present invention: During use, the inner discharge hole 39 on one side is offset from the outer discharge hole 40. The pressure plate 26 is located outside the annular filter plate 15. The two insertion rods 33 are respectively located outside the two slots 35 and are in contact with the side portions of the two moving rods 18 close to each other. The side portion of the outer baffle 10 is close to the side portion of the annular filter plate 15 close to the distribution pipe 3. The inner discharge hole 39 on the other side corresponds to the outer discharge hole 40. The pressure plate 26 is located inside the annular filter plate 15. The two insertion rods 33 are respectively located inside the two slots 35. The side portion of the outer baffle 10 is close to the side portion of the annular filter plate 15 away from the distribution pipe 3; Feeding can be carried out through the feed pipe 1. The sugar solution enters the two distribution pipes 3 through the feed pipe 1. Since the inner discharge hole 39 of one distribution pipe 3 is sealed by the sealing sleeve 30 and the inner discharge hole 39 of the other distribution pipe 3 corresponds to the outer discharge hole 40, the discharge can only be carried out through the inner discharge hole 39 of the other distribution pipe 3. The material falls on the annular filter plate 15 and can be filtered through the annular filter plate 15. At the same time, start the stepping motor 36 located on one side of the annular filter plate 15. The output shaft of the stepping motor 36 rotates to drive the small gear 37 to rotate. The small gear 37 rotates to drive the outer gear ring 38 to rotate. The outer gear ring 38 is coaxially arranged with the annular filter plate 15. The rotation of the outer gear ring 38 drives the annular filter plate 15 to rotate. The rotation of the annular filter plate 15 enables the material located inside the annular filter plate 15 to be flipped, thus avoiding blockage during filtration and improving the filtration effect; After the annular filter plate 15 has been filtering for a period of time, residues have accumulated on the annular filter plate 15 and need to be cleaned. At this time, start the horizontal telescopic rod 6. The movement of the horizontal telescopic rod 6 drives the annular filter plate 15 with residues away from the distribution pipe 3. The movement of the annular filter plate 15 drives the inner baffle 19 and the pressure plate 26 to move. The inner baffle 19 separates from the side portion of the stopper 9. Since the four guiding springs 29 on one side of the annular filter plate 15 with residues are in a deformed state, the outer discharge hole 40 and the inner discharge hole 39 are slowly separated, and then the sealing sleeve 30 moves to cover the inner discharge hole 39 to stop the discharge. At the same time, the movement of the annular filter plate 15 causes the outer baffle 10 to slide inside the annular filter plate 15. After the sealing sleeve 30 covers the inner discharge hole 39, the outer baffle 10 pushes the residues inside the annular filter plate 15 until it contacts the side portion of the pressure plate 26. Then the outer baffle 10 continues to squeeze the residues to discharge the liquid inside the residues. At the same time, the outer baffle 10 will squeeze the pressure plate 26; The pressure plate 26 slides in the circular groove under pressure. The sliding of the pressure plate 26 drives the rotation of the two push rods 34. The rotation of the two push rods 34 drives the two insertion rods 33 to approach each other. The two return springs 31 are deformed. When the residue is under a certain pressure and contains less liquid at this time, the two return springs 31 reach a certain deformation, so that the two insertion rods 33 are respectively moved out of the two slots 35. Under the action of the two moving springs 16, the inner retaining plate 19 moves. The movement of the inner retaining plate 19 drives the pressure plate 26 to move and thus separate from the annular filter plate 15. The residue can fall into the conical ring 12 through the opening between the pressure plate 26 and the annular filter plate 15 and be guided to the residue box 5 through the conical ring 12 to complete the collection. The movement of the inner retaining plate 19 drives the movement of the two connecting blocks 20. The movement of the two connecting blocks 20 drives the rotation of the two rotating rods 25. The rotation of the two rotating rods 25 drives the movement of the two sliding blocks 22 and the two pressure wheels 24. The two pressure wheels 24 correspond to the inclined sides of the arc-shaped extrusion columns 21; When it is necessary to switch to the filtration mode, the conical ring 12, the annular filter plate 15, the inner retaining plate 19, the pressure wheels 24 and the pressure plate 26 move. When the pressure wheels 24 contact the inclined sides of the arc-shaped extrusion columns 21, the pressure wheels 24 are squeezed, so that the sliding blocks 22 slide close to the annular filter plate 15. The movement of the sliding blocks 22 drives the reverse rotation of the rotating rods 25, thus pulling the connecting blocks 20 to move. The movement of the connecting blocks 20 drives the inner retaining plate 19 to move relative to the moving rod 18. The movement of the inner retaining plate 19 causes the moving spring 16 to deform. The movement of the inner retaining plate 19 drives the pressure plate 26 to enter the annular filter plate 15. When the slots 35 on the moving rod 18 correspond to the insertion rods 33, under the action of the return spring 31, the insertion rods 33 enter the slots 35 to complete the connection between the moving rod 18 and the inner retaining plate 19. At this time, the pressure wheels 24 are separated from the arc-shaped extrusion columns 21. Then the inner retaining plate 19 continues to move with the annular filter plate 15 and contacts the same-side stopper 9. The inner retaining plate 19 squeezes the stopper 9, so that the sealing sleeve 30 moves. The movement of the sealing sleeve 30 causes the four guiding springs 29 to deform. When the external discharge hole 40 is located inside the annular filter plate 15, the sealing sleeve 30 continues to move so that the external discharge hole 40 on the sealing sleeve 30 corresponds to the internal discharge hole 39 in position. The material can enter the annular filter plate 15 without residue through the internal discharge hole 39 and the external discharge hole 40. Then the stepping motor 36 on one side of the annular filter plate 15 can be started to make the annular filter plate 15 rotate to continue the filtration operation.

[0037] The above is only the preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A method for producing starch sugar, characterized in that: The following steps are included: S1, raw material preparation, washing, crushing, separating the raw materials in sequence, extracting starch, refining the starch, and removing impurities therein; S2, liquefaction, mixing starch and water to form starch milk, and then adding α-amylase to decompose starch molecules into short-chain dextrins to form a liquefied liquid; S3, saccharification, cooling the liquefied liquid to 55-60°C, adding saccharifying enzyme, hydrolyzing dextrin into small molecule sugars, and forming sugar solution; S4, decolorization and filtration, removing pigments and impurities in the sugar solution, and removing solid impurities through a filtration device to obtain a clarified sugar solution; S5, purification, removing inorganic salts and organic impurities in the sugar solution through ion exchange resin to further improve the purity; S6, concentration and crystallization, concentrating the sugar solution by an evaporator, and obtaining solid sugar by cooling and crystallization; The filtering device used in step S4 comprises a feed pipe (1), an annular filter plate (15) and a driving mechanism. The bottom end of the feed pipe (1) is connected to the annular filter plate (15) and is capable of feeding the sugar solution into the annular filter plate (15). The driving mechanism is connected to the annular filter plate (15) and is capable of driving the annular filter plate (15) to rotate.

2. The method for producing starch sugar according to claim 1, characterized in that: The weight concentration of starch in the starch milk in step S2 is 30%-40%; After adding α-amylase in step S2, the starch milk is maintained at 90-110°C.

3. The method for producing starch sugar according to claim 1, characterized in that: The filtering device also includes a box body (2), the top end of the feed pipe (1) extends to the outside of the box body (2), two interconnected distribution pipes (3) are fixedly installed at the bottom end of the feed pipe (1), the ends of the two distribution pipes (3) away from each other are fixedly installed with an outer baffle (10), the bottom inner walls of the two distribution pipes (3) are each provided with an inner discharge hole (39), two annular filter plates (15) are installed on the bottom inner wall of the box body (2) through a driving mechanism, the two annular filter plates (15) are arranged outside the two distribution pipes (3), the two outer baffles (10) are respectively in contact with the inner walls of the two annular filter plates (15), the sides of the two annular filter plates (15) close to each other are each provided with an extrusion discharge mechanism, the two distribution pipes (3) are each provided with a sealing mechanism, the two sealing mechanisms are installed in cooperation with the two inner discharge holes (39), and the two sealing mechanisms are installed in cooperation with the two extrusion discharge mechanisms; The extrusion discharge mechanism comprises two reset assemblies mounted on the vertical side of the annular filter plate (15), the two reset assemblies being mounted with inner baffles (19), the side of the inner baffles (19) being provided with a circular groove, a pressure plate (26) being slidably mounted in the circular groove, the outer side of the pressure plate (26) being matched with the inner wall of the annular filter plate (15), the side of the pressure plate (26) close to the inner baffles (19) being mounted with an extrusion assembly, the extrusion assembly being mounted in cooperation with the two reset assemblies, and the side of the inner baffles (19) being mounted with a return assembly.

4. The method for producing starch sugar according to claim 3, characterized in that: The reset assembly comprises two moving rods (18) fixedly mounted on the vertical side of the annular filter plate (15); two reset holes are provided on the side of the inner baffle plate (19); the two moving rods (18) respectively penetrate the two reset holes and are fixedly mounted with moving blocks (17); the two moving rods (18) are sleeved with moving springs (16); one ends of the two moving springs (16) are respectively fixedly mounted on the sides of the two moving blocks (17); and the other ends of the two moving springs (16) are fixedly mounted on the sides of the inner baffle plate (19).

5. The method for producing starch sugar according to claim 4, characterized in that: The extrusion assembly comprises two reset blocks (32) fixedly mounted on the vertical inner wall of the circular groove, the sides of the two reset blocks (32) away from each other are fixedly mounted with reset springs (31), the ends of the two reset springs (31) away from each other are fixedly mounted with insertion rods (33), the inner wall of the circular groove is provided with two insertion holes, the two insertion holes are respectively connected to the two reset holes, the two insertion rods (33) respectively penetrate the two insertion holes, the sides of the two moving rods (18) close to each other are provided with slots (35), the two insertion rods (33) respectively correspond to the positions of the two slots (35), the ends of the two insertion rods (33) close to each other are rotatably mounted with push rods (34), and the ends of the two push rods (34) away from each other are rotatably mounted on the side of the pressure plate (26).

6. The method for producing starch sugar according to claim 5, characterized in that: The return mechanism comprises two connecting blocks (20) fixedly mounted on the side of the inner baffle plate (19), the ends of the two connecting blocks (20) away from each other are rotatably mounted with a rotating rod (25), the ends of the two rotating rods (25) away from the connecting blocks (20) are rotatably mounted with a sliding block (22), the outer side of the annular filter plate (15) is fixedly mounted with a conical ring (12), the inner wall and the side of the conical ring (12) are provided with two T-shaped grooves, the two T-shaped sliding blocks (23) are slidably mounted in the two T-shaped grooves, the sides of the two T-shaped sliding blocks (23) respectively extend outside the two T-shaped grooves and are respectively fixedly connected to the sides of the two sliding blocks (22), and the ends of the two sliding blocks (22) away from the rotating rod (25) are rotatably mounted with a pressure wheel (24).

7. The method for producing starch sugar according to claim 6, characterized in that: The return mechanism further comprises an arc-shaped extrusion column (21) fixedly mounted on the inner wall of the top side of the feed pipe (1), the side of the arc-shaped extrusion column (21) close to the pressure wheel (24) being inclined, and both of the two pressure wheels (24) correspond to the inclined side of the arc-shaped extrusion column (21).

8. The method for producing starch sugar according to claim 7, characterized in that: The sealing mechanism comprises a fixing ring (27) fixedly sleeved on the material distribution pipe (3), four guide rods (28) being fixedly mounted on the side of the fixing ring (27) away from the feed pipe (1), a sealing sleeve (30) being slidably sleeved on the material distribution pipe (3), the inner wall of the sealing sleeve (30) being in contact with the outer side of the material distribution pipe (3), the inner wall of the circular groove and the center position of the side of the pressure plate (26) being provided with circular holes, the sealing sleeve (30) being slidably mounted in the two circular holes, and the side of the sealing sleeve (30) close to the fixing ring (27) being provided with Four guide grooves are provided, the four guide rods (28) respectively extend into the four guide grooves and are fixedly installed with guide springs (29), the ends of the four guide springs (29) away from the guide rods (28) are respectively fixedly installed on the inner walls of the four guide grooves, the bottom inner wall of the sealing sleeve (30) is provided with an outgoing material hole (40), the outgoing material hole (40) corresponds to the position of the inner material hole (39), and the top of the sealing sleeve (30) is fixedly installed with a stopper (9), and the stopper (9) corresponds to the position of the pressure plate (26).

9. The method for producing starch sugar according to claim 7, characterized in that: The driving mechanism comprises a horizontal telescopic rod (6) fixedly mounted on the inner wall of the bottom side of the box body (2); a residue box (5) is fixedly mounted on the output end of the horizontal telescopic rod (6); liquid collecting boxes (4) are fixedly mounted on both sides of the residue box (5); the two liquid collecting boxes (4) correspond to the positions of the two annular filter plates (15) respectively; the residue boxes (5) correspond to the positions of the two conical rings (12); two brackets (13) are fixedly mounted on the tops of the two liquid collecting boxes (4); rotating rings (14) are fixedly mounted on the tops of the two brackets (13) located on the same side; annular grooves are provided on the annular side portions of the annular filter plates (15); and the two rotating rings (14) are rotatably sleeved in the two annular grooves respectively.

10. The method for producing starch sugar according to claim 9, characterized in that: The driving mechanism further comprises an L-shaped plate (11) fixedly mounted on mutually distant sides of the two liquid collecting boxes (4); the mutually distant vertical sides of the two L-shaped plates (11) are both fixedly mounted with stepper motors (36); the output shafts of the two stepper motors (36) respectively penetrate the vertical sides of the two L-shaped plates (11) and are both fixedly mounted with pinions (37); the mutually distant sides of the two annular filter plates (15) are both fixedly mounted with outer gear rings (38); the two outer gear rings (38) are respectively meshed with the two pinions (37).

Images