A starch sieving automatic feeding device

Abstract

The invention relates to the technical field of automatic material feeding, and in particular to an automatic starch screening feeding device, comprising a screening mechanism, an auxiliary mechanism for crushing dried block starch is arranged above the screening mechanism, a rotating shaft is provided on the auxiliary mechanism, and a feeding mechanism for cooperating with the auxiliary mechanism and conveying and feeding the starch before screening is also arranged on the rotating shaft, a supporting tray realizes reciprocating spiral feeding of starch to avoid starch accumulation inside a rotating disk, when the rotating disk rotates, a waist-shaped through groove pushes the starch inside to preliminarily complete the vibration crushing of the starch, the downward pressure of the pressure roller cooperates with the rotating arc screen to realize friction crushing of the starch and improve the quality of starch crushing, the dead angle in the crushing work is reduced by the mutual approach and outward expansion of four arc push plates, the arc screen vibrates due to the rebound force of the spring telescopic sleeve, the clogging of the screen holes is avoided, and the quality of starch screening and feeding efficiency are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of automatic material feeding, in particular to an automatic starch sieving feeding device. Background Art

[0002] Starch is a widely used food additive and industrial raw material that can be extracted from a variety of plants, such as corn, potatoes, wheat, cassava, etc. Before packaging and storage, starch usually needs to undergo a series of processing, including refining and washing, dehydration and drying, and crushing and grading to ensure that its particle size is uniform and meets the specified standards.

[0003] During the dehydration and drying process, starch granules are usually pressed into cakes, and the cake-shaped starch granules stick to each other to form lumps, so the later screening and crushing of starch is particularly important.

[0004] The common screening step is to first crush a large amount of starch and then vibrate and sieve it. The large particles that cannot be sieved are gathered to a certain extent and then returned to the crushing step to ensure that the starch meets the standards. Although this method can also obtain starch of better quality, the screening equipment is prone to accumulation when processing a large amount of starch, and the uniformity of screening cannot be fully guaranteed. That is, some starch that meets the particle size cannot pass through the screen quickly due to the obstruction of large starch particles, thereby reducing work efficiency. In addition, when processing a large amount of starch, the starch may clog the screen during the falling process, further affecting the efficiency of screening and crushing. Summary of the invention

[0005] In view of the above problems, the embodiment of the present application provides an automatic feeding device for starch screening to solve the above problems existing in starch screening.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: an automatic starch screening feeding device, including a screening mechanism, characterized in that an auxiliary mechanism for crushing block starch is arranged above the screening mechanism, and a rotating shaft is provided on the auxiliary mechanism. The rotating shaft is also provided with a feeding mechanism for cooperating with the auxiliary mechanism and conveying and discharging the starch before screening.

[0007] The screening mechanism comprises an annular mounting platform 1, inside of which an arc-shaped screen which reciprocates up and down is arranged.

[0008] The auxiliary mechanism includes an annular mounting platform 2, a partition plate is fixedly arranged inside the annular mounting platform 2, and a matching portion that matches the arc-shaped screen is arranged on the lower end surface of the partition plate. The auxiliary mechanism also includes a rotating plate that is arranged inside the annular mounting platform 2 and rotated by a plurality of rollers, and the rotating plate is located above the partition plate.

[0009] A connecting column is fixedly arranged upward at the central position of the upper end face of the separation disc. The lower end face of the rotating shaft is ball-jointed with the connecting column. A strip-shaped plate with a strip-shaped through groove opened on the end face is fixedly arranged on the outer wall of the rotating shaft. A second linkage part is also arranged on the strip-shaped plate. The second linkage part can drive the rotating disc to rotate and the second annular mounting table to press down during the rotation of the strip-shaped plate. The sieving mechanism further includes a first linkage part for assisting the arc-shaped sieve mesh to rotate.

[0010] Preferably, four groups of waist-shaped through grooves are uniformly opened on the end face of the separation disc along its circumferential direction. Each group of waist-shaped through grooves includes a plurality of waist-shaped through grooves one and waist-shaped through grooves two.

[0011] Preferably, the upper end face of the rotating shaft is fixedly connected to the output shaft of an external motor. A sliding block is slidably arranged inside the strip-shaped through groove. A connecting pipe communicated with an external starch conveying device is fixedly arranged on the sliding block. The connecting pipe penetrates downward through the sliding block.

[0012] Preferably, the feeding mechanism includes a bearing tray rotatably arranged on the outer wall of the rotating shaft through a bearing. The bearing tray is fixed by an external support. A flat threaded through groove penetrating the bearing tray is opened downward on the end face of the bearing tray. A sliding block is slidably arranged in the flat threaded through groove. The upper end face of the sliding block is fixedly connected to the connecting pipe. The connecting pipe penetrates downward through the sliding block. When the strip-shaped plate drives the sliding block to rotate, the sliding block will slide along the flat threaded through groove as the sliding block rotates and gradually move toward the rotating shaft direction.

[0013] Preferably, an annular ring one and an annular ring two are installed inside the first annular mounting table. The diameter of the annular ring two is smaller than that of the annular ring one. The arc-shaped sieve mesh is fixedly arranged between the annular ring one and the annular ring two. The side of the arc-shaped sieve mesh close to the annular ring one is high, and the side close to the annular ring two is low. A plurality of inverted L-shaped bearing plates are fixedly arranged on the outer wall of the annular mounting table. A plurality of U-shaped bearing frames with upward openings are jointly fixedly arranged on the lower end faces of the annular ring one and the annular ring two along their circumferential directions.

[0014] Preferably, the first linkage part includes an annular through groove opened on the outer wall of the first annular mounting table. A toothed ring is rotatably arranged in the annular through groove. A plurality of rectangular blocks sliding in the up-and-down direction are uniformly arranged on the inner wall of the toothed ring along its circumferential direction. All the plurality of rectangular blocks are fixedly connected to the outer wall of the annular ring one. Spring telescopic sleeves are fixedly arranged on the upper end face and the lower end face of the rectangular block respectively. The spring telescopic sleeves are fixedly connected to the inner wall of the corresponding first annular mounting table respectively. An avoidance through groove is also opened downward on the side wall of the first annular mounting table corresponding to the position of the rectangular block. The first linkage part further includes a driving group for cooperating with the first linkage part to drive the arc-shaped sieve mesh to rotate.

[0015] Preferably, the driving group includes a driving motor fixedly mounted on one side wall of the annular mounting platform via a motor seat, a driving gear which is always meshed with a gear ring is fixedly mounted on the outer wall of the output shaft of the driving motor, and the driving group also includes a circular plate rotatably arranged inside the annular ring 2 via a bearing, four arc-shaped push plates are slidably arranged along the circumferential direction of the central position of the upper end surface of the circular plate, the four arc-shaped push plates are connected by flexible rubber plates, and the four arc-shaped push plates cooperate with the auxiliary mechanism to push the starch outwards during the rotation of the arc-shaped screen.

[0016] Preferably, the matching part includes a circular column fixedly arranged at the center position of the lower end surface of the separating plate, and the outer wall of the circular column is fixedly provided with a wedge-shaped block whose slope gradually moves away from the center of the circular column corresponding to the four arc-shaped push plates. The matching part also includes four connecting plates fixedly arranged in a circumferential direction on the lower end surface of the separating plate, and the lower end surfaces of the four connecting plates are jointly fixedly provided with a bowl-shaped bracket, and the arc-shaped outer wall of the bowl-shaped bracket is provided with a plurality of blanking grooves distributed in a circumferential direction, and the arc-shaped outer wall of the bowl-shaped bracket is fixedly provided with a pressure roller between two adjacent blanking grooves.

[0017] Preferably, four groups of waist-shaped through grooves are also opened on the end surface of the rotating disk facing downward, and the waist-shaped through grooves on the rotating disk are staggered with the waist-shaped through grooves on the separating disk, and a strip slide groove is opened on the end surface of the rotating disk, and a T-shaped slider is slidably arranged inside the strip slide groove.

[0018] Preferably, the second linkage part comprises a telescopic push rod fixedly arranged on the lower end surface of the strip plate and corresponding to the strip slide groove, and the telescopic section of the telescopic push rod is ball-jointed with the T-shaped slider inside the strip slide groove.

[0019] Compared with the prior art, the embodiments of the present invention provide the following beneficial effects:

[0020] 1. The present invention realizes the reciprocating spiral feeding of starch through the supporting tray in the feeding mechanism, avoids the accumulation of starch inside the separation disk, and thus improves the efficiency and quality of subsequent screening. When the rotating disk driven by the telescopic push rod rotates, it is intermittently connected with the waist-shaped through groove on the separation disk through the waist-shaped through groove arranged thereon, ensuring that the starch intermittently and evenly falls into the arc-shaped screen. At the same time, the rotating disk pushes the starch inside through the waist-shaped through groove during the rotation process, and preliminarily completes the vibration crushing work of the starch.

[0021] 2. The telescopic push rod provided in the present invention can realize the intermittent downward pressing action of the annular mounting platform 2, and the friction crushing of starch is realized through the cooperation between the pressing roller on the bowl-shaped bracket and the rotating arc-shaped screen, thereby improving the quality of starch crushing.

[0022] 3. During the reciprocating downward pressing process, the arc-shaped screen of the present invention realizes the pushing of starch on the circular plate through the mutual approach and outward expansion of the four arc-shaped push plates, reducing the dead angle in the crushing work; when the telescopic push rod is reset, the arc-shaped screen vibrates due to the rebound force of the spring telescopic sleeve, avoiding the blockage of the screen holes, and further improving the quality of starch screening and the feeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the first position of the present invention.

[0024] Figure 2 It is a schematic diagram of the second position three-dimensional structure of the present invention.

[0025] Figure 3 It is a partial structural schematic diagram of the screening mechanism in the present invention.

[0026] Figure 4 It is a cross-sectional view of a partial structure of the screening mechanism in the present invention.

[0027] Figure 5 It is an exploded view of a part of the structure of the auxiliary mechanism in the present invention.

[0028] Figure 6 yes Figure 5 Schematic diagram of the plan structure in exploded view.

[0029] Figure 7 It is a schematic diagram of the positional relationship between the annular mounting platform 2 and the annular mounting platform 1.

[0030] Figure 8 It is a schematic diagram of the positional relationship among the auxiliary mechanism, the rotating shaft and the feeding mechanism in the present invention.

[0031] Fig. 9 yes Figure 8 Exploded view of the position relationship diagram.

[0032] Fig.10 It is a cross-sectional view of the feeding mechanism in the present invention.

[0033] Reference numerals in the drawings: 1, sieving mechanism; 11, first annular mounting platform; 111, first annular ring; 112, second annular ring; 113, arc-shaped sieve; 114, inverted L-shaped bearing plate; 115, C-shaped support; 12, first linkage part; 121, gear ring; 122, rectangular block; 123, avoidance through groove; 124, drive group; 1241, drive motor; 1242, driving gear; 1243, circular plate; 1244, arc-shaped push plate; 2, auxiliary mechanism; 21, second annular mounting platform; 22, partition disk; 221, connecting column; 23, mating part; 231, circular column; 232, wedge block; 233, bowl-shaped support; 234, pressure roller; 24, rotating disk; 241, strip-shaped chute; 242, T-shaped slider; 3, rotating shaft; 31, strip-shaped plate; 311, strip-shaped through groove; 312, sliding block; 313, connecting pipe; 314, second linkage part; 3141, telescopic push rod; 4, feeding mechanism; 41, bearing tray; 411, plane thread through groove; 412, sliding block. Detailed implementation mode

[0034] The following will further elaborate on this application in conjunction with the attached Figure 1-10 drawings.

[0035] Please refer to Figure 1 a starch sieving and automatic feeding device, which includes a sieving mechanism 1. An auxiliary mechanism 2 for crushing the dried blocky starch is arranged above the sieving mechanism 1 in a mating manner. A rotating shaft 3 is ball-jointed on the auxiliary mechanism 2, and a feeding mechanism 4 for cooperating with the auxiliary mechanism 2 to work and conveying and feeding the starch before sieving is also arranged on the rotating shaft 3.

[0036] During specific operation, first, the dried starch is conveyed to the feeding mechanism 4, and then the blocky starch is crushed through the cooperation between the feeding mechanism 4 and the auxiliary mechanism 2. Next, the starch is made to fall onto the sieving mechanism 1 in an intermittent feeding manner. Finally, through the cooperation between the sieving mechanism 1 and the auxiliary mechanism 2, the crushed starch continues to be sieved downward and then falls into an external storage device.

[0037] Please refer to Figure 1 and Figure 5 The auxiliary mechanism 2 includes a second annular mounting platform 21. A partition disk 22 is fixedly arranged inside the second annular mounting platform 21. A connecting column 221 is fixedly arranged upward at the center position of the upper end face of the partition disk 22. Four groups of waist-shaped through grooves are evenly arranged on the end face of the partition disk 22 along its circumferential direction. Each group of waist-shaped through grooves includes a plurality of first waist-shaped through grooves and second waist-shaped through grooves. The second waist-shaped through groove is located on the outer periphery of the first waist-shaped through groove. A mating part 23 for cooperating with the arc-shaped sieve 113 is arranged on the lower end face of the partition disk 22. The auxiliary mechanism 2 further includes a rotating disk 24 rotatably arranged inside the second annular mounting platform 21 through a plurality of roller shafts (not shown in the drawings).

[0038] Please refer to Figure 5 The end surface of the rotating disk 24 is also provided with four groups of waist-shaped through grooves facing downward. The waist-shaped through grooves on the rotating disk 24 are staggered with the waist-shaped through grooves on the separating disk 22, and a strip-shaped slide groove 241 is provided on the end surface of the rotating disk 24, and a T-shaped slider 242 is slidably provided inside the strip-shaped slide groove 241.

[0039] Please refer to Figure 8 and Fig. 9 The upper end surface of the rotating shaft 3 is fixedly connected to the output shaft of the external motor, and the lower end surface of the rotating shaft 3 is ball-jointed with the connecting column 221. The outer wall of the rotating shaft 3 is fixedly provided with a strip plate 31 with a strip through groove 311 on the end surface. A sliding block 312 is slidably provided inside the strip through groove 311. A connecting pipe 313 connected to the external starch conveying equipment is fixedly provided on the sliding block 312. The connecting pipe 313 penetrates downwardly through the sliding block 312. A linkage part 2 314 is also provided on the strip plate 31.

[0040] Please refer to Figure 8 The second linkage part 314 includes a telescopic push rod 3141 fixedly arranged on the lower end surface of the strip plate 31 and corresponding to the strip slide groove 241. The telescopic section of the telescopic push rod 3141 is ball-jointed with the T-shaped slider 242 inside the strip slide groove 241. The second linkage part 314 can drive the rotating disk 24 to rotate and press down during the rotation of the strip plate 31.

[0041] Please refer to Fig. 9 and Fig.10 The feeding mechanism 4 includes a support tray 41 rotatably arranged on the outer wall of the rotating shaft 3 through a bearing, and the support tray 41 is fixed by an external bracket (not shown in the figure). The end surface of the support tray 41 is downwardly provided with a plane threaded groove 411 penetrating the support tray 41, and a sliding block 412 is slidably arranged in the plane threaded groove 411. The upper end surface of the sliding block 412 is fixedly connected to the connecting pipe 313, and the connecting pipe 313 penetrates the sliding block 412 downward. When the strip plate 31 drives the sliding block 312 to rotate, the sliding block 412 will slide along the plane threaded groove 411 as the sliding block 312 rotates, and gradually move toward the rotating shaft 3.

[0042] Please refer to Figure 5 and Figure 6The matching part 23 includes a circular column 231 fixedly arranged at the center position of the lower end surface of the separating plate 22, and the outer wall of the circular column 231 is fixedly provided with a wedge block 232 whose slope gradually moves away from the center of the circular column 231 corresponding to the four arc-shaped push plates 1244. The matching part 23 also includes four connecting plates fixedly arranged in a circumferential direction on the lower end surface of the separating plate 22, and the lower end surfaces of the four connecting plates are jointly fixedly provided with a bowl-shaped bracket 233. The arc-shaped outer wall of the bowl-shaped bracket 233 is provided with a plurality of blanking grooves distributed in a circumferential direction, and the arc-shaped outer wall of the bowl-shaped bracket 233 is fixedly provided with a pressure roller 234 between two adjacent blanking grooves.

[0043] When it is necessary to crush the dried starch, first connect the starch conveying device to the connecting pipe 313, and then convey the starch from the connecting pipe 313 to the inside of the annular mounting platform 21 through the starch conveying device, then control the external motor to rotate forward and drive the strip plate 31 and the rotating shaft 3 to rotate, at this time, the sliding block 412 is driven by the strip plate 31 and slides along the plane threaded groove 411, thereby completing the starch replacement and feeding work, and then ensuring the uniformity of starch distribution and improving the quality of starch crushing in the later stage.

[0044] When the strip plate 31 is rotating, the rotating disk 24 is also rotated by the telescopic push rod 3141 to ensure that the starch falling from above falls into the waist-shaped groove on the rotating disk 24. As the rotating disk 24 rotates, the starch inside the waist-shaped groove is pushed first, and the starch is shaken and crushed in the first step. At the same time, as the rotating disk 24 rotates, the waist-shaped groove on the rotating disk 24 is intermittently connected with the waist-shaped groove on the separating disk 22, so that the starch inside the rotating disk 24 falls freely along the connected waist-shaped grooves and passes through the drop chute into the screening mechanism 1 below.

[0045] It should be noted that when the strip plate 31 drives the sliding block 412 to rotate to the innermost side of the planar threaded through groove 411 , the external motor is controlled to reverse and the sliding block 412 gradually slides to the outer side of the planar threaded through groove 411 .

[0046] Please refer to Figure 4, the screening mechanism 1 includes a first annular mounting platform 11. A number of inverted L-shaped bearing plates 114 are fixedly arranged on the outer wall of the first annular mounting platform 11. An inner ring 111 and an outer ring 112 are installed inside the first annular mounting platform 11. The diameter of the outer ring 112 is smaller than that of the inner ring 111. An arc-shaped screen 113 is fixedly arranged between the inner ring 111 and the outer ring 112. The side of the arc-shaped screen 113 close to the inner ring 111 is higher, and the side close to the outer ring 112 is lower. A number of upward-opening U-shaped brackets 115 are fixedly arranged along the circumferential direction on the lower end surfaces of the inner ring 111 and the outer ring 112. The screening mechanism 1 further includes a first linkage part 12 for assisting the rotation of the arc-shaped screen 113.

[0047] Please refer to Figure 3 and Figure 4 , the first linkage part 12 includes an annular through groove opened on the outer wall of the first annular mounting platform 11. A gear ring 121 is rotatably arranged in the annular through groove. A number of rectangular blocks 122 sliding in the up and down directions are evenly arranged along the circumferential direction on the inner wall of the gear ring 121. Spring telescopic sleeves are fixedly arranged on the upper end surfaces and the lower end surfaces of the number of rectangular blocks 122 respectively. The spring telescopic sleeves are fixedly connected to the inner wall of the first annular mounting platform 11. Avoidance through grooves 123 are also opened downward on the side wall of the first annular mounting platform 11 corresponding to the positions of the rectangular blocks 122. The number of rectangular blocks 122 are all fixedly connected to the outer wall of the inner ring 111. The first linkage part 12 further includes a driving group 124 for cooperating with the first linkage part 12 to drive the arc-shaped screen 113 to rotate.

[0048] Please refer to Figure 3 , the driving group 124 includes a driving motor 1241 fixedly arranged on the side wall of the first annular mounting platform 11 through a motor seat. A driving gear 1242 always meshing with the gear ring 121 is fixedly arranged on the outer wall of the output shaft of the driving motor 1241. The driving group 124 further includes a circular plate 1243 rotatably arranged inside the outer ring 112 through a bearing. Four arc-shaped push plates 1244 are slidably arranged along the circumferential direction at the center position of the upper end surface of the circular plate 1243. The four arc-shaped push plates 1244 are connected by a flexible rubber plate. The four arc-shaped push plates 1244 cooperate with the auxiliary mechanism 2 to push the starch outwards during the rotation of the arc-shaped screen 113.

[0049] When starch falls from the material drop chute to the arc-shaped screen 113 inside the annular mounting platform 11, starch with smaller particles will directly fall into the storage device below through the holes in the arc-shaped screen 113, while larger particles will remain in the arc-shaped screen 113. When the telescopic push rod 3141 drives the rotating disk 24 to rotate to a certain position, the telescopic section of the telescopic push rod 3141 is controlled to extend and push the rotating disk 24 and the annular mounting platform 21 downward. At this time, the annular mounting platform 21 rotates around the hinge point between it and the rotating shaft 3 and makes the several pressure rollers 234 arranged on the outer wall of the bowl-shaped bracket 233 contact the starch that has not fallen on the arc-shaped screen 113, and the pressure rollers 234 crush the starch. On the one hand, the starch particles are broken into smaller particles by extrusion for easy passage. On the other hand, it can play a dredging effect on the starch blocked in the holes of the arc-shaped screen 113.

[0050] The telescopic push rod 3141 is repeatedly extended and retracted to repeatedly lift and press the annular mounting platform 21, and the circumferential rotation process of the annular mounting platform 21 is coordinated to enable the pressing roller 234 to fully crush the starch. The driving motor 1241 drives the active gear 1242 to engage the gear ring 121 to rotate. At this time, the arc screen 113 also rotates under the drive of the annular ring 111 and the annular ring 2 112. In this way, the relative rotation of the arc screen 113 and the pressing roller 234 further ensures the quality of starch crushing. At the same time, the alternating rotation and pressing method is also used to ensure the uniformity of starch crushing.

[0051] It should be noted that the initial position of the circular column 231 on the lower end surface of the separation plate 22 is located between the four arc-shaped push plates 1244. When the position of the starch inside the arc-shaped screen 113 needs to be adjusted, the telescopic push rod 3141 is continued to be controlled to extend and push the annular mounting platform 21 downward. After the annular mounting platform 21 contacts the arc-shaped screen 113, the arc-shaped screen 113 will be subjected to the unilateral force of the bowl-shaped bracket 233 and slide downward along the gear ring 121. At this time, the wedge block 232 on the circular column 231 and the four arc-shaped push plates 1244 are pressed against each other. The four arc-shaped push plates 1244 are disengaged, and the four arc-shaped push plates 1244 are quickly reset under the pulling of the adjacent flexible rubber plates. At this time, the starch feeding is still continuing. After the telescopic push rod 3141 drives the bowl-shaped bracket 233 to reset, the circular column 231 and the wedge block 232 continue to be inserted downward into the four arc-shaped push plates 1244. At this time, the four arc-shaped push plates 1244 expand outward synchronously and push the excess starch on the circular plate 1243 to the outside of the circular plate 1243, thereby reducing the dead angle of the starch crushing and screening work.

[0052] At the same time, when the telescopic push rod 3141 is retracted, the arc screen 113 is vibrated by the rebound force of the spring telescopic sleeve on the rectangular block 122, thereby preventing the holes on the arc screen 113 from being blocked, further improving the quality of starch screening and the feeding efficiency.

[0053] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of 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 cannot be understood as a limitation on the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] 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 according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A starch sieving automatic feeding device, comprising a sieving mechanism (1), characterized in that: An auxiliary mechanism (2) for crushing block starch is provided above the screening mechanism (1); a rotating shaft (3) is provided on the auxiliary mechanism (2) through a ball joint; a feeding mechanism (4) is provided on the rotating shaft (3) for cooperating with the auxiliary mechanism (2) and conveying and discharging starch before screening; The screening mechanism (1) comprises an annular mounting platform (11), an arc-shaped screen (113) is arranged inside the annular mounting platform (11) and is reciprocatingly movable up and down. The screening mechanism (1) also comprises a linkage part (12) for assisting the rotation of the arc-shaped screen (113); The auxiliary mechanism (2) comprises an annular mounting platform (21), a partition plate (22) is fixedly arranged inside the annular mounting platform (21), a matching portion (23) matching with the arc-shaped screen (113) is arranged on the lower end surface of the partition plate (22), and the auxiliary mechanism (2) also comprises a rotating plate (24) arranged inside the annular mounting platform (21) by a plurality of rollers, and the rotating plate (24) is located above the partition plate (22); A connecting column (221) is fixedly arranged at the center position of the upper end surface of the separation plate (22) facing upward, and the lower end surface of the rotating shaft (3) is spherically hinged with the connecting column (221). A strip plate (31) with a strip through groove (311) provided on the end surface is fixedly arranged on the outer wall of the rotating shaft (3). A second linkage part (314) is also arranged on the strip plate (31). The second linkage part (314) can drive the rotating plate (24) to rotate and the annular mounting platform (21) to press downward during the rotation of the strip plate (31); The upper end surface of the rotating shaft (3) is fixedly connected to the output shaft of the external motor, a sliding block (312) is slidably arranged inside the strip-shaped through groove (311), a connecting pipe (313) connected to the external starch conveying equipment is fixedly arranged on the sliding block (312), and the connecting pipe (313) passes through the sliding block (312) downwards; The feeding mechanism (4) comprises a bearing tray (41) rotatably arranged on the outer wall of the rotating shaft (3) through a bearing, the bearing tray (41) is fixed by an external bracket, and a plane threaded through groove (411) penetrating the bearing tray (41) is provided on the end surface of the bearing tray (41) downwardly, a sliding block (412) is slidably arranged in the plane threaded through groove (411), the upper end surface of the sliding block (412) is fixedly connected to the connecting pipe (313), and the connecting pipe (313) penetrates the sliding block (412) downwardly, and when the strip plate (31) drives the sliding block (312) to rotate, the sliding block (412) will slide along the plane threaded through groove (411) as the sliding block (312) rotates, and gradually move toward the rotating shaft (3).

2. The automatic starch sieving feeding device according to claim 1, characterized in that: The end surface of the separation plate (22) is evenly provided with four groups of waist-shaped through grooves along its circumferential direction, and each group of waist-shaped through grooves includes a plurality of waist-shaped through grooves one and two.

3. The automatic starch sieving feeding device according to claim 1, characterized in that: Inside the annular mounting base 1 (11), an annular ring 1 (111) and an annular ring 2 (112) are installed. The diameter of the annular ring 2 (112) is smaller than that of the annular ring 1 (111). The arc-shaped screen (113) is fixedly arranged between the annular ring 1 (111) and the annular ring 2 (112). The side of the arc-shaped screen (113) close to the annular ring 1 (111) is high, and the side close to the annular ring 2 (112) is low. A number of inverted L-shaped bearing plates (114) are fixedly arranged on the outer wall of the annular mounting base 1 (11). The lower end surfaces of the annular ring 1 (111) and the annular ring 2 (112) are fixedly provided with a number of U-shaped brackets (115) with openings facing upwards along the circumferential direction.

4. The automatic starch sieving feeding device according to claim 3, characterized in that: The linkage part 1 (12) includes an annular through groove opened on the outer wall of the annular mounting base 1 (11). A gear ring (121) is rotatably arranged in the annular through groove. A number of rectangular blocks (122) sliding in the up and down direction are uniformly arranged on the inner wall of the gear ring (121) along the circumferential direction. All the rectangular blocks (122) are fixedly connected to the outer wall of the annular ring 1 (111). Spring telescopic sleeves are fixedly arranged on the upper end surface and the lower end surface of the rectangular block (122) respectively. The spring telescopic sleeves are fixedly connected to the inner wall of the corresponding annular mounting base 1 (11). An avoidance through groove (123) is also opened downwards on the side wall of the annular mounting base 1 (11) corresponding to the position of the rectangular block (122). The linkage part 1 (12) also includes a driving group (124) for driving the arc-shaped screen (113) to rotate in cooperation with the linkage part 1 (12).

5. The automatic starch sieving feeding device according to claim 4, characterized in that: The driving group (124) includes a driving motor (1241) fixedly arranged on the side wall of the annular mounting base 1 (11) through a motor base. A driving gear (1242) always meshing with the gear ring (121) is fixedly arranged on the outer wall of the output shaft of the driving motor (1241). The driving group (124) also includes a circular plate (1243) rotatably arranged inside the annular ring 2 (112) through a bearing. Four arc-shaped push plates (1244) are slidably arranged on the circumferential direction at the center position of the upper end surface of the circular plate (1243). The four arc-shaped push plates (1244) are connected by a flexible rubber plate. The four arc-shaped push plates (1244) push the starch outwards in cooperation with the auxiliary mechanism (2) during the rotation of the arc-shaped screen (113).

6. The automatic starch sieving feeding device according to claim 1, characterized in that: The matching part (23) includes a circular column (231) fixedly arranged at the center position of the lower end surface of the separation plate (22), and the outer wall of the circular column (231) is fixedly provided with a wedge block (232) whose slope gradually moves away from the center of the circular column (231) corresponding to four arc-shaped push plates (1244). The matching part (23) also includes four connecting plates fixedly arranged on the lower end surface of the separation plate (22) in a circumferential direction, and the lower end surfaces of the four connecting plates are commonly fixedly provided with a bowl-shaped bracket (233), and the arc-shaped outer wall of the bowl-shaped bracket (233) is provided with a plurality of blanking grooves distributed in a circumferential direction, and the arc-shaped outer wall of the bowl-shaped bracket (233) is fixedly provided with a pressure roller (234) between two adjacent blanking grooves.

7. The automatic starch sieving feeding device according to claim 1, characterized in that: The end surface of the rotating disk (24) is also provided with four groups of waist-shaped through grooves facing downwards. The waist-shaped through grooves on the rotating disk (24) are arranged alternately with the waist-shaped through grooves on the separating disk (22). A strip-shaped sliding groove (241) is provided on the end surface of the rotating disk (24), and a T-shaped sliding block (242) is slidably arranged inside the strip-shaped sliding groove (241).

8. The automatic starch sieving feeding device according to claim 3, characterized in that: The linkage part 2 (314) comprises a telescopic push rod (3141) fixedly arranged on the lower end surface of the strip plate (31) and corresponding to the strip slide groove (241), and the telescopic section of the telescopic push rod (3141) is ball-jointed with a T-shaped slider (242) inside the strip slide groove (241).

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