Modified starch processing and filtering device

Abstract

The invention discloses a modified starch processing and filtering device, and relates to the technical field of modified starch processing and filtering. The modified starch processing and filtering device comprises an operation box with an opening in the upper portion, and the operation box is internally provided with an overturning type screening and filtering mechanism which is used for conducting multiple filtering on modified starch and meanwhile can rapidly discharge impurity particles filtered out through screening without residues. A cover protection assembly which is used for being arranged outside the filter bags in a sleeving mode to prevent modified starch from being thrown away and flying in the filtering process is jointly arranged between the main driving mechanism and an inner cavity of the operation box, and a plurality of self-overturning assemblies which correspond to the filter bags and are located in the corresponding filter bags are arranged outside the shaft rod at equal intervals. Through the combination of the shaft rod, the mounting ring and the annular sieve tray in the tilting type screening mechanism, the filter bag is quickly jacked and turned up upwards, filtered impurity particles are integrally poured out, deep cleaning can be achieved without complex disassembly, cleaning of dead corners is avoided, the downtime is shortened, and the screening efficiency and the screening continuity are improved.

Description

Technical Field

[0001] The invention relates to the technical field of modified starch processing and filtration, in particular to a modified starch processing and filtration device. Background Art

[0002] Modified starch is a new type of material obtained by modifying natural starch extracted from raw materials such as corn, potato, wheat, etc. through physical, chemical or enzymatic treatment. After modification, the properties of starch are significantly enhanced. Modified starch usually has stronger heat resistance, antioxidant, solubility, adhesion or other functional characteristics, and is widely used in food, medicine, cosmetics, paper and other industries. Modified starch usually appears as white or nearly white fine particles with good fluidity and is easy to store and transport. In the processing of modified starch, screening is a very critical step, especially after drying and crushing. Since modified starch may produce larger particles, lumps or incompletely reacted substances during the modification and drying process, it is necessary to remove these impurities that do not meet the specifications through screening to ensure the uniformity of the particles for subsequent use and to ensure the consistency and quality of the product.

[0003] At present, starch screening usually adopts screening methods such as vibrating screen and rotary screen. During the long screening process, larger particles, lumps or impurities are easy to accumulate on the screen plate. These accumulations cause the screening speed of the screen to slow down. Therefore, it is necessary to regularly remove the impurity particles intercepted on the screen. The screen plate needs to be disassembled through multiple operation steps before cleaning. At the same time, since some impurity particles will be stuck in the mesh of the screen, it takes a long time to clean each time. In addition, larger particles or lumps are easy to accumulate at the corners of the screen. These impurities are difficult to be thoroughly cleaned, which will not only further extend the cleaning time of the screen, but also reduce the passability of the screen due to the difficulty in thorough cleaning. Summary of the invention

[0004] The present invention provides a modified starch processing and filtering device, which solves the technical problems that the impurity particles will block the sieve holes during the screening process and need to be cleaned regularly, but the impurity particles are stuck in the mesh holes during the cleaning of the traditional sieve plate, which is troublesome and time-consuming to clean, and some impurity particles are accumulated at the corners of the sieve plate, which are difficult to completely remove, and the passability of the sieve is not completely reduced during regular cleaning.

[0005] A modified starch processing and filtering device provided by the present invention comprises an operating box with an upper opening, wherein the operating box is provided with a tilting screening mechanism for performing multiple filtrations on the modified starch and simultaneously quickly discharging the filtered impurity particles without residue, and a general driving mechanism for driving the tilting screening mechanism to operate is provided between the bottom of the operating box cavity and the tilting screening mechanism, wherein the tilting screening mechanism comprises: an axle rod rotatably arranged on the general driving mechanism, a plurality of mounting seats equidistantly fixedly connected between the left and right cavity walls of the operating box through a fixing rod and distributed along the axis path of the axle rod, a mounting ring rotatably connected to the mounting seat and sleeved on the outside of the axle rod, and a plurality of equidistantly fixedly connected An annular sieve plate is outside the shaft and corresponds to the mounting ring, and a filter bag is fixedly connected between the annular sieve plate and the mounting ring. The total drive mechanism is used to drive the shaft to move upward and then drive the filter bag to move upward and flip up so as to pour out the impurity particles sieved out of the modified starch. The upper end face of the mounting seat is a slope surface with a lower front and a higher rear. A coupling assembly is commonly provided between the shaft and the mounting ring to connect the two together for synchronous rotation. A cover assembly is commonly provided between the total drive mechanism and the inner cavity of the working box to be sleeved on the outside of the filter bag to prevent the modified starch from being thrown away and flying during filtration. A plurality of self-turning assemblies corresponding to the filter bags and located inside the corresponding filter bags are equidistantly provided on the outside of the shaft.

[0006] In one possible implementation, the overall drive mechanism includes two electric telescopic rods symmetrically fixedly connected to the bottom of the working box cavity, the upper ends of the two electric telescopic rods are commonly fixedly connected to a mounting plate, a reciprocating drive motor is embedded and fixedly connected to the mounting plate, and the output shaft of the reciprocating drive motor is fixedly connected to the lower end of the shaft rod through a coupling.

[0007] In one possible implementation, the cover protection assembly includes a support plate, an arc cover, an inclined frame and a sliding column. The front and rear cavity walls of the working box are respectively fixedly connected with a spring telescopic column group, and the ends of the spring telescopic column groups are fixedly connected with a support plate. The opposite sides of the two support plates are fixedly connected with an arc cover corresponding to the filter bag through a fixed column, and the back sides of the two support plates are fixedly connected with an inclined frame. Two L-shaped rods are symmetrically fixedly connected to the front and back of the left side of the mounting plate, and the upper end of the vertical section of the L-shaped rod is fixedly connected with a spring telescopic column, and the outside of the spring telescopic column is fixedly connected with a sliding column slidably arranged in the inclined frame.

[0008] In one possible implementation, the coupling assembly includes a slip ring that is slidably connected to the outside of the shaft rod by means of a spline fit, a top spring is fixedly connected between the slip ring and the shaft rod, a plurality of spoke plates are fixedly connected to the circumferential outer wall of the slip ring at equal intervals, a plurality of slots corresponding to the number of spoke plates are equidistantly provided on the upper side of the mounting ring, and a block that fits the slot is fixedly connected to the lower end surface of the spoke plate.

[0009] In a possible implementation, a plurality of material guiding shields corresponding to the spoke plates and the slip rings are fixedly connected to the outer wall of the shaft, and the material guiding shields are located directly above the corresponding spoke plates and the slip rings.

[0010] In a possible implementation, the annular sieve plate is in the shape of an inverted cone that gradually inclines from bottom to top toward a side close to the axis of the shaft.

[0011] In a possible implementation, vertical grooves are provided on the left and right cavity walls of the working box, and the shaft rod is externally rotatably connected to a guide plate slidably disposed in the vertical grooves.

[0012] In a possible implementation, the self-turning assembly includes an annular recessed groove formed on the outside of the shaft rod, and a plurality of strip-type material shifting plates are hingedly connected to the circumferential groove wall at equal intervals in the circumferential direction through lugs.

[0013] In one possible implementation, a through groove is provided at the lower portion of the right end surface of the working box, and two L-shaped material guide plates are symmetrically slidably connected in the through groove in the front and rear directions. Arc grooves are provided on opposite sides of the transverse sections of the L-shaped material guide plates, and magnetic strip blocks are fixedly connected to opposite ends of the transverse sections of the two L-shaped material guide plates, and the magnetic poles of the two magnetic strip blocks on opposite sides are opposite.

[0014] In a possible implementation, a plurality of rectangular through slots flush with the front side of the mounting seat are equidistantly provided on the left and right wall panels of the working box, and a receiving box is slidably connected to two of the rectangular through slots opposite to each other on the left and right sides.

[0015] It can be seen from the above technical scheme that the present invention has the following advantages: In the present invention, through the design of the tilting screening mechanism, the filter bag after screening is pushed up and flipped up by utilizing the combination of the shaft rod, the mounting ring and the annular sieve plate, and the impurity particles filtered out are quickly poured out as a whole, and deep cleaning can be achieved without complicated disassembly, and cleaning dead corners are avoided, and the downtime for each regular cleaning is shortened, thereby improving the screening efficiency and the continuity of screening.

[0016] In the present invention, the shaft is reciprocated during the filtration process of the modified starch to drive the strip-shaped material-dispensing plate to stir the modified starch from multiple directions, thereby promoting uniform distribution of the material and keeping the starch particles active during the filtration process, thereby accelerating the filtration speed of the modified starch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 This is a schematic cross-sectional structure diagram of the modified starch processing and filtering device provided by the present invention.

[0019] Figure 2 This is a schematic diagram of the connection structure between the tilting screening mechanism and the overall drive mechanism provided by the present invention.

[0020] Figure 3 This is a partial structural schematic diagram of the tilting screening mechanism provided by the present invention.

[0021] Figure 4 The present invention provides Figure 3 Schematic diagram of the enlarged structure of part A in FIG.

[0022] Figure 5 A schematic cross-sectional view of a partial structure of the tilting screening mechanism provided by the present invention from a right side perspective.

[0023] Figure 6 The present invention provides Figure 5 Schematic diagram of the enlarged structure of part B.

[0024] Among them, the above-mentioned drawings include the following figure marks: 1. working box; 2. tilting screening mechanism; 21. shaft rod; 22. mounting seat; 23. mounting ring; 24. annular sieve plate; 25. filter bag; 26. coupling assembly; 261. slip ring; 262. spoke plate; 263. slot; 264. block; 27. cover assembly; 271. support plate; 272. arc cover; 273. inclined frame; 274. sliding column; 275. spring telescopic column; 28. self-turning assembly; 281. recessed groove; 282. strip-type material removal plate; 3. total drive mechanism; 31. electric telescopic rod; 32. mounting plate; 33. reciprocating drive motor; 4. material guide shield; 5. guide plate; 6. L-shaped material guide plate; 7. material receiving box. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0026] See also Figure 1The present invention provides a technical solution: a modified starch processing and filtering device, comprising an operation box 1 with an upper opening, wherein the operation box 1 is provided with a tilting screening mechanism 2 for performing multiple filtrations on the modified starch and quickly discharging the filtered impurity particles without residue, and a total driving mechanism 3 for driving the tilting screening mechanism 2 to operate is provided between the bottom of the operation box 1 and the tilting screening mechanism 2.

[0027] See also Figure 2 , Figure 3 and Figure 5 In this embodiment, the tilting screening mechanism 2 includes a shaft 21 rotatably arranged on the total driving mechanism 3, a plurality of mounting seats 22 equidistantly fixedly connected between the left and right cavity walls of the working box 1 through a fixing rod and distributed along the axis path of the shaft 21, a mounting ring 23 rotatably connected to the mounting seat 22 and sleeved on the outside of the shaft 21, a plurality of annular sieve plates 24 equidistantly fixedly connected to the outside of the shaft 21 and corresponding to the mounting ring 23, and a filter bag 25 fixedly connected between the annular sieve plate and the mounting ring 23. The total driving mechanism 3 is used to drive the shaft 21 to move upward and then drive the filter bag 25 to move upward and flip up so as to pour out the impurity particles screened out of the modified starch. The annular sieve plate 24 is an inverted cone shape that gradually tilts from bottom to top toward the side close to the axis of the shaft 21.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 A coupling assembly 26 for connecting the two together for synchronous rotation is commonly provided between the shaft rod 21 and the mounting ring 23, a shield assembly 27 for being sleeved on the outside of the filter bag 25 to prevent the modified starch from being thrown away and flying during filtration is commonly provided between the total drive mechanism 3 and the inner cavity of the working box 1, a plurality of self-turning assemblies 28 corresponding to the filter bag 25 and located inside the corresponding filter bag 25 are equidistantly provided on the outside of the shaft rod 21, the self-turning assembly 28 comprises an annular recessed groove 281 provided on the outside of the shaft rod 21, a plurality of strip-type material-dispensing plates 282 are equidistantly hinged on the circumferential groove wall of the annular recessed groove 281 through a lug, a through groove is provided at the lower part of the right end face of the working box 1, two L-shaped material guide plates 6 are symmetrically slidably connected in the through groove, the opposite sides of the transverse section of the L-shaped material guide plate 6 are provided with arc grooves, the opposite ends of the transverse sections of the two L-shaped material guide plates 6 are fixedly connected with magnetic strip blocks, and the magnetic poles of the opposite sides of the two magnetic strip blocks are opposite.

[0029] See also Figure 1 and Figure 2The overall drive mechanism 3 includes two electric telescopic rods 31 symmetrically fixedly connected to the bottom of the working box 1. The upper ends of the two electric telescopic rods 31 are fixedly connected to a mounting plate 32. A reciprocating drive motor 33 is embedded and fixedly connected to the mounting plate 32. The output shaft of the reciprocating drive motor 33 is fixedly connected to the lower end of the shaft rod 21 through a coupling.

[0030] In the initial state, the annular sieve plate 24 is located below the mounting ring 23, and the filter bag 25 is concave in shape. Before filtering the modified starch, the two L-shaped guide plates 6 are simultaneously placed in the through grooves, and the two L-shaped guide plates 6 are butt-jointed together using magnetic strips, so that the two L-shaped guide plates 6 together form a U-shaped frame, and the two arc-shaped grooves are also butt-jointed together to form a circular hole outside the shaft 21, and then the modified starch can be poured into the filter bag 25 located at the top, and the reciprocating drive motor 33 is controlled to drive the shaft 21 to intermittently reciprocate, and the shaft 21 then drives the mounting ring 23 to rotate through the coupling assembly 26, and the shaft 21 simultaneously drives the annular sieve plate 24 to rotate, and the mounting ring 23 and the annular sieve plate 24 then simultaneously drive the filter bag 25 to rotate.

[0031] The strip-type material-pickling plate 282 will be driven to rotate during the rotation of the shaft 21. The strip-type material-pickling plate 282 will be swung outward and opened under the action of centrifugal force. The unfolded strip-type material-pickling plate 282 will poke the modified starch in the filter bag 25. When the shaft 21 switches direction, the unfolded strip-type material-pickling plate 282 will stop briefly, and then rotate downward under its own weight to reset. After the shaft 21 rotates in the other direction, the strip-type material-pickling plate 282 will be unfolded again under the action of centrifugal force, and the modified starch in the filter bag 25 can be stirred vertically. The strip-type material-pickling plate 282 can poke the modified starch in the filter bag 25 from multiple directions to accelerate the screening speed of the modified starch. At the same time, the modified starch in the filter bag 25 will also move outward under the action of centrifugal force and disperse on the inner wall of the filter bag 25, further accelerating the screening speed.

[0032] The modified starch filtered by the first filter bag 25 at the top will enter the cover assembly 27, and then fall into the second filter bag 25 at the top. The above filtering steps are repeated to perform multiple filtrations on the modified starch. Finally, the filtered modified starch will be discharged from the filter bag 25 at the bottom, and then fall onto the two L-shaped guide plates 6, and finally flow out along the inclined surface of the L-shaped guide plate 6, while the impurity particles in the modified starch are intercepted in the filter bag 25.

[0033] See also Figure 1 , Figure 2 and Figure 3In this embodiment, the cover assembly 27 includes a support plate 271, an arc cover 272, an inclined frame 273 and a sliding column 274. The front and rear cavity walls of the working box 1 are respectively fixedly connected with spring telescopic column groups, and the ends of the spring telescopic column groups are fixedly connected with support plates 271. The opposite sides of the two support plates 271 are fixedly connected with arc covers 272 corresponding to the filter bags 25 through fixed columns. The back sides of the two support plates 271 are fixedly connected with inclined frames 273. Two L-shaped rods are symmetrically fixedly connected to the front and rear of the left side of the mounting plate 32. The upper end of the vertical section of the L-shaped rod is fixedly connected with a spring telescopic column 275. The outside of the spring telescopic column 275 is fixedly connected with a sliding column 274 slidably set in the inclined frame 273.

[0034] See also Figure 3 and Figure 4 The coupling assembly 26 includes a slip ring 261 slidably connected to the outside of the shaft 21 by spline matching, and a top spring is fixedly connected between the slip ring 261 and the shaft 21. A plurality of spoke plates 262 are fixedly connected to the circumferential outer wall of the slip ring 261 at equal intervals in the circumferential direction. A plurality of slots 263 corresponding to the number of the spoke plates 262 are equidistantly opened in the circumferential direction on the upper side of the mounting ring 23, and a block 264 matching the slot 263 is fixedly connected to the lower end surface of the spoke plate 262. A plurality of material guide shields 4 corresponding to the spoke plates 262 and the slip ring 261 are fixedly connected to the outer wall of the shaft 21, and the material guide shield 4 is located directly above the corresponding spoke plates 262 and the slip ring 261. The slope of the upper surface of the material guide shield 4 is used to guide the modified starch falling from above, so as to prevent the modified starch from accumulating on the surface of the slip ring 261 and the spoke plate 262.

[0035] See also Figure 1 and Figure 2 A plurality of rectangular through grooves flush with the front side of the mounting seat 22 are equidistantly provided on the left and right wall panels of the working box 1, and a material receiving box 7 is slidably connected to the two rectangular through grooves opposite to each other on the left and right sides. The upper end surface of the mounting seat 22 is a slope surface with a lower front and a higher rear. A C-shaped side plate is fixedly connected to the upper end surface of the mounting seat 22. The C-shaped side plate is used to block foreign particles that fall on the upper surface of the mounting seat 22, ensuring that the foreign particles can smoothly enter the material receiving box 7 along the slope of the mounting seat 22. Vertical grooves are provided on the left and right cavity walls of the working box 1, and the external rotation of the shaft rod 21 is connected to a guide plate 5 slidably arranged in the vertical groove. The guide plate 5 is used to reinforce and support the upper part of the shaft rod 21, thereby improving the stability of the shaft rod 21.

[0036] When it is necessary to remove the foreign particles in the filter bag 25, first manually slide the receiving box 7 into the rectangular through groove, and then slide along the rectangular through groove to make the receiving box 7 contact the front side of the mounting seat 22, then separate the two L-shaped guide plates 6 connected together, and then move the L-shaped guide plate 6 out of the working box 1, and then control the electric telescopic rod 31 to extend and push the mounting plate 32 to move up, and the mounting plate 32 then drives the shaft rod 21 to move up through the reciprocating drive motor 33, and the shaft rod 21 drives the slip ring 261 and the annular sieve plate 24 to move up synchronously, and the slip ring 261 drives the block 264 to move out of the slot 263 through the spoke plate 262, so that the transmission state between the shaft rod 21 and the mounting ring 23 is cut off, and the annular sieve plate gradually pushes the filter bag 25 to move upward.

[0037] At the same time, the mounting plate 32 will also drive the L-shaped rod to move upward, and the L-shaped rod then drives the sliding column 274 to move upward through the spring telescopic column 275, and the sliding column 274 then squeezes the inclined frame 273 to make the two inclined frames 273 move away from each other, and the inclined frame 273 then drives the arc cover 272 to move through the support plate 271 and the fixed column, so that the arc cover 272 gradually moves away from the outside of the filter bag 25. After the front and rear arc covers 272 are completely moved away, the sliding column 274 touches the upper groove wall of the inclined frame 273, and the mounting plate 32 continues to move upward and drives the L-shaped rod to move synchronously, and the L-shaped rod squeezes the spring telescopic column 275 again and is continuously compressed, and the shaft The rod 21 gradually moves upward along with the mounting plate 32, driving the annular sieve plate 24 until the annular sieve plate 24 drives the filter bag 25 to flip up into an inverted cone shape. The flipped filter bag 25 causes the impurity particles inside it to pour out and fall on the mounting seat 22. Then the impurity particles flow forward along the inclined surface of the mounting seat 22 and fall into the receiving box 7. Then, the shaft rod 21 is controlled to reciprocate for several circles to drive the annular sieve plate 24 to move synchronously. The annular sieve plate 24 then drives the filter bag 25 to twist back and forth, causing some impurities still attached to the inner wall of the filter bag 25 to fall off, thereby quickly removing the impurity particles intercepted during filtration.

[0038] Then the electric telescopic rod 31 is controlled to contract and drive the mounting plate 32 to move downward, the mounting plate 32 indirectly drives the shaft rod 21 to move downward, the shaft rod 21 drives the annular sieve plate 24 to move downward, and the annular sieve plate 24 then presses the filter bag 25 to move downward until it returns to its initial shape. In the process of the filter bag 25 being driven to gradually concave, the mounting plate 32 drives the sliding column 274 to move downward through the L-shaped rod and the spring telescopic column 275, and the sliding column 274 then cooperates with the inclined frame 273 to make the front and rear arc covers 272 move closer to each other, and the shaft rod 21 drives the sliding ring 261 and the spoke plate 262 to move the front and rear arc covers 272 closer to each other. The movable block 264 moves downward so that the block 264 is stuck in the slot 263 (even if the block 264 is not stuck in the slot 263, during the subsequent rotation of the shaft 21, the shaft 21 will drive the block 264 to rotate synchronously through the slip ring 261 and the spoke plate 262, and the top spring will continue to push the slip ring 261 downward. When the block 264 rotates to the top of the slot 263, it will be indirectly inserted into the slot 263 under the pushing of the top spring), until the filter bag 25 is finally recessed to its initial shape, and the external modified starch can be passed into the filter bag 25 again for screening.

[0039] During operation, the filter bag 25 is initially in a concave shape. The modified starch is poured into the tilting screening mechanism 2, and the modified starch is subjected to multiple filtrations through the filter bags 25 vertically distributed in the tilting screening mechanism 2. After the filtration is completed, the total drive mechanism 3 is controlled to operate so that the filter bag 25 is gradually flipped upward until the filter bag 25 becomes a convex shape, so that the impurity particles intercepted during the filtration process can be quickly discharged as a whole.

[0040] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as limiting the present invention.

[0041] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A modified starch processing and filtering device, comprising a working box (1) with an upper opening, characterized in that: The operation box (1) is provided with a tilting filtration mechanism (2) for performing multiple filtrations on the modified starch and for rapidly discharging the filtered impurity particles without any residue; a total driving mechanism (3) for driving the tilting filtration mechanism (2) to operate is provided between the bottom of the operation box (1) and the tilting filtration mechanism (2); The tilting screening mechanism (2) comprises: a shaft (21) rotatably arranged on the total driving mechanism (3), a plurality of mounting seats (22) equidistantly fixedly connected between the left and right cavity walls of the working box (1) by means of a fixing rod and distributed along the axial path of the shaft (21), a mounting ring (23) rotatably connected to the mounting seat (22) and sleeved on the outside of the shaft (21), a plurality of annular sieve plates (24) equidistantly fixedly connected to the outside of the shaft (21) and corresponding to the mounting ring (23), and a filter bag (25) fixedly connected between the annular sieve plate and the mounting ring (23), wherein the total driving mechanism (3) is used to drive the shaft (21) to move upward and thereby drive the filter bag (25) to move upward and flip up so as to pour out the impurity particles filtered out of the modified starch, and the upper end surface of the mounting seat (22) is a slope surface with a lower front and a higher rear. A coupling assembly (26) is provided between the shaft (21) and the mounting ring (23) for connecting the two together so as to rotate synchronously; a shield assembly (27) is provided between the total drive mechanism (3) and the inner cavity of the working box (1) for being sleeved on the outside of the filter bag (25) to prevent the modified starch from being thrown away and flying during filtration; and a plurality of self-turning assemblies (28) corresponding to the filter bags (25) and located inside the corresponding filter bags (25) are equidistantly provided on the outside of the shaft (21).

2. A modified starch processing and filtering device according to claim 1, characterized in that: The overall drive mechanism (3) comprises two electric telescopic rods (31) symmetrically fixedly connected to the bottom of the working box (1), the upper ends of the two electric telescopic rods (31) being fixedly connected to a mounting plate (32), a reciprocating drive motor (33) being embedded and fixedly connected to the mounting plate (32), and an output shaft of the reciprocating drive motor (33) being fixedly connected to the lower end of the shaft rod (21) via a coupling.

3. A modified starch processing and filtering device according to claim 2, characterized in that: The cover assembly (27) comprises a support plate (271), an arc-shaped cover (272), an inclined frame (273) and a sliding column (274); the front and rear cavity walls of the working box (1) are respectively fixedly connected with a spring telescopic column group; the ends of the spring telescopic column group are fixedly connected with a support plate (271); the opposite sides of the two support plates (271) are fixedly connected with an arc-shaped cover (272) corresponding to the filter bag (25) through a fixed column; the opposite sides of the two support plates (271) are fixedly connected with an inclined frame (273); the left side of the mounting plate (32) is symmetrically fixedly connected with two L-shaped rods in front and back; the upper end of the vertical section of the L-shaped rod is fixedly connected with a spring telescopic column (275); the outside of the spring telescopic column (275) is fixedly connected with a sliding column (274) slidably arranged in the inclined frame (273).

4. The modified starch processing and filtering device according to claim 1, characterized in that: The coupling assembly (26) comprises a slip ring (261) slidably connected to the outside of the shaft (21) by means of spline fitting, a top spring being fixedly connected between the slip ring (261) and the shaft (21), a plurality of spoke plates (262) being fixedly connected at equal intervals on the circumferential outer wall of the slip ring (261), a plurality of slots (263) corresponding to the number of the spoke plates (262) being equidistantly formed on the upper side of the mounting ring (23), and a block (264) matching the slots (263) being fixedly connected to the lower end surface of the spoke plate (262).

5. A modified starch processing and filtering device according to claim 4, characterized in that: The outer wall of the shaft rod (21) is fixedly connected with a plurality of material guide shields (4) corresponding to the spoke plates (262) and the slip rings (261), and the material guide shields (4) are located directly above the corresponding spoke plates (262) and the slip rings (261).

6. The modified starch processing and filtering device according to claim 1, characterized in that: The annular sieve plate (24) is in the shape of an inverted cone which gradually inclines from bottom to top toward the axis side of the shaft rod (21).

7. The modified starch processing and filtering device according to claim 1, characterized in that: The left and right walls of the working box (1) are both provided with vertical grooves, and the shaft rod (21) is externally rotatably connected to a guide plate (5) slidably arranged in the vertical grooves.

8. The modified starch processing and filtering device according to claim 1, characterized in that: The self-turning material assembly (28) comprises an annular recessed groove (281) formed outside the shaft rod (21), and a plurality of strip-shaped material shifting plates (282) are hingedly connected to the circumferential groove wall of the annular recessed groove (281) at equal intervals in the circumferential direction through lugs.

9. The modified starch processing and filtering device according to claim 1, characterized in that: A through groove is provided at the lower part of the right end surface of the operation box (1), and two L-shaped material guide plates (6) are symmetrically slidably connected in the through groove. The opposite sides of the transverse sections of the L-shaped material guide plates (6) are provided with arc grooves. The opposite ends of the transverse sections of the two L-shaped material guide plates (6) are fixedly connected with magnetic strip blocks, and the magnetic poles of the opposite sides of the two magnetic strip blocks are opposite.

10. The modified starch processing and filtering device according to claim 1, characterized in that: The left and right wall panels of the operation box (1) are equidistantly provided with a plurality of rectangular through slots flush with the front side of the mounting seat (22), and a material receiving box (7) is slidably connected to two of the rectangular through slots opposite to each other on the left and right sides.

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