Multifunctional crushing and screening device for food processing

Abstract

The invention relates to the technical field of food processing, in particular to a multifunctional crushing and screening device for food processing, which comprises a crushing box, a drying box is fixed on the upper surface of the crushing box, a crushing mechanism is mounted in the crushing box corresponding to the lower position of the drying box, and a drying and feeding assembly is mounted in the drying box. A small material outlet is formed in the bottom of one side of the drying box, a winnowing machine fixed in the crushing box is arranged below the crushing mechanism, and a screening assembly installed in the crushing box is arranged below the winnowing machine; the drying box pretreats nuts, the nuts are screened while the internal humidity of the nuts is reduced, targeted crushing is conducted through the crushing mechanism according to the types and specifications of the nuts, so that it is guaranteed that kernels are not excessively damaged as much as possible, shells are effectively crushed, finally, the winnowing machine is matched with the screening assembly, and the screening efficiency is improved. The kernels are separated according to the size specification, meanwhile, shells are effectively screened out, and follow-up unified processing is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and particularly relates to a multifunctional crushing and screening device for food processing. Background Art

[0002] In the current food processing industry, crushing is a common and important process. Most of the existing crushing devices for food processing operate in a double-roller crushing mode. This method usually uses two relatively rotating crushing rollers, and through their meshing action, the crushing of food is achieved. The surface of the crushing rollers is usually designed with specific patterns or protrusions to enhance the crushing effect. Among them, the crushing process of nuts is one of the most common processing procedures. For example, a raw material crushing device for food processing with the publication number CN118751332A in the prior art. This device is provided with a low-temperature crushing integrated mechanism. As it meshes, while quickly crushing it, it also utilizes several tooth grooves originally required for crushing to achieve a larger contact area with nut seeds, thereby quickly transferring low temperature to the nut seeds. After the nut seeds are cooled, their brittleness increases and their toughness decreases. Then, there is no need to waste a large amount of human and material resources to pre-cool the seeds in a low-temperature refrigerator. Through the crushing tooth cylinder, the seeds can be quickly cooled and crushed, without damaging the nutritional value of the nut seeds, and the seeds can be crushed more evenly, reducing the problem of uneven crushing due to the relatively large toughness resulting in softening and flattening. However, when this device is crushing, it is difficult to adapt to nuts of different categories and different specifications, resulting in the complete destruction of the kernels inside the nuts. At the same time, after crushing the nuts, it is difficult to separate the outer shell from the internal kernels, leading to inconvenient subsequent processing. In view of the above technical deficiencies, a solution is proposed now. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multifunctional crushing and screening device for food processing. By adjusting the distance between the crushing rollers through the crushing mechanism, nuts of different categories and different specifications can be adapted. At the same time, a screening component is matched to separate the crushed outer shell and kernels, so as to solve the problems proposed in the above background art.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A multifunctional crushing and screening device for food processing, including a crushing box, on the upper surface of the crushing box is fixed a drying box, and inside the crushing box, a crushing mechanism is installed at a position corresponding to the lower part of the drying box. Inside the drying box, a drying and feeding component is installed, and at the bottom of one side of the drying box, a small material outlet is opened. Below the crushing mechanism, an air separator fixed inside the crushing box is provided. Below the air separator, a screening component installed inside the crushing box is provided. At the front end of the crushing box, a discharge port and a waste discharge port are respectively opened at positions corresponding to the air separator and the screening component.

[0005] Further, the crushing mechanism includes a number of crushing rollers arranged at equal intervals inside the crushing box. On one side of the crushing roller, a moving block is rotationally connected. Inside the bottom end of the moving block, a rotating shaft rotationally connected inside the crushing box is sleeved. One of the moving blocks is fixedly connected to the rotating shaft, and the other moving blocks are rotationally connected to the rotating shaft. Outside the rotating shaft, a lead screw is sleeved corresponding to the outside of the moving block.

[0006] Further, on the other side of the crushing roller, a worm gear is fixed. Below the worm gear, a worm is engaged. Inside the worm, an oval rotating shaft rotationally connected inside the crushing box is commonly penetrated and connected, and the worm is slidably connected to the oval rotating shaft. On one side of the oval rotating shaft, it penetrates and extends outside the crushing box and is fixed with a second motor.

[0007] Further, the screening component includes two sieve plates arranged inside the crushing box. At the four corners of the sieve plate, guide rods fixed inside the crushing box are penetrated and connected. Outside the guide rod, a spring fixed between the crushing box and the sieve plate is sleeved.

[0008] Further, on the bottom of the upper sieve plate and the top of the lower sieve plate, bumps are fixed. Between the two bumps, a cam rotationally connected inside the crushing box is provided.

[0009] Further, at the positions corresponding to the cam, the rotating shaft and the oval rotating shaft on one side of the crushing box, synchronous pulleys are rotationally connected. The oval rotating shaft and the cam are both fixedly connected to the synchronous pulley, and the rotating shaft is rotationally connected to the synchronous pulley. The three synchronous pulleys are rotationally connected by a synchronous belt.

[0010] Further, inside the rotating shaft, a bidirectional lead screw is rotationally connected. At both ends of the outside of the bidirectional lead screw, two screw sleeves are symmetrically sleeved, and on one side of the bidirectional lead screw, it penetrates the rotating shaft and extends outside the synchronous pulley. On both sides of the screw sleeve, two connecting rods are symmetrically rotationally connected. On one side of the two connecting rods on the same side, a clamping plate is commonly rotationally connected. At the positions corresponding to the clamping plate on both sides of the rotating shaft, through grooves are opened. At the positions corresponding to the through grooves on both sides inside the synchronous pulley, clamping grooves are opened.

[0011] Furthermore, the drying feeding assembly includes a second gear rotatably connected to one side of the interior of the drying box, the upper and lower ends of the second gear are symmetrically meshed with two first gears rotatably connected to the interior of the drying box, and one side of the second gear passes through and extends to the outside of the drying box where a first motor is fixed, the interior of the drying box is rotatably connected to a drum screen, a meshing gear ring is fixed at a position corresponding to the first gear on one side of the drum screen, and a feed port is fixed at a position corresponding to the interior of the drum screen on one side of the drying box.

[0012] Furthermore, an auger and a cleaning brush are fixed to one side of the two first gears respectively, a baffle is fixed at the position corresponding to the auger inside the drying box, and a feeding port is opened inside one side of the drum screen.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present invention is provided with a drying box, through which the nuts are dehumidified, and the first motor cooperates with two gears to drive the drum screen to rotate, so as to reduce the humidity inside the nuts, assist in the separation of the shell and the kernel when the nuts are crushed, and facilitate the collection of the kernels. At the same time, the nuts of smaller specifications are screened out, which is convenient for subsequent unification, so that the crushing effect is synchronized as a whole without too much difference; 2. The present invention utilizes a crushing mechanism to adjust the distance between the crushing rollers to adapt to nuts of different types and specifications, and crushes the nuts to be processed within a target range so that the internal kernels will not be excessively damaged. At the same time, the shells are effectively crushed, and the lighter shells are separated by a winnowing machine, while the heavier kernels fall into the screening component, thereby effectively separating the kernels from the shells for subsequent processing.

[0014] 3. In the present invention, after the nuts are crushed and the lighter shells are screened out by a winnowing machine, the kernels are separated by a screening component, and the specifications of the kernels are screened by two sieve plates. Large kernels and possible large shells are screened out by the upper sieve plate, and kernels of moderate specifications are screened out by the lower sieve plate, while smaller kernels and possible residual fine shells fall into the bottom of the crushing box, thereby effectively separating the kernels from the shells.

[0015] In summary, the drying box of the present invention pre-treats the nuts, reduces the internal humidity of the nuts and screens the nuts at the same time, utilizes a crushing mechanism to perform targeted crushing according to the type and specification of the nuts, thereby ensuring as much as possible that the kernels are not excessively damaged while the shells are effectively crushed, and finally utilizes a winnowing machine in conjunction with a screening component to separate the kernels according to size specifications, while effectively screening out the shells for subsequent unified processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the crushing box of the present invention; Figure 3 It is a schematic diagram of the structure of the crushing mechanism of the present invention; Figure 4 It is a combined view of the rotating shaft and the synchronous pulley of the present invention; Figure 5 It is a schematic diagram of the structure of the screening assembly of the present invention; Figure 6 It is a schematic diagram of the internal structure of the drying box of the present invention; Figure 7 It is a schematic diagram of the structure of the drying and feeding assembly of the present invention.

[0017] Reference numerals: 1, crushing box; 2, drying box; 3, first motor; 4, small material outlet; 5, second motor; 6, discharge port; 7, impurity discharge port; 8, crushing mechanism; 9, air separator; 10, screening assembly; 11, worm gear; 12, crushing roller; 13, synchronous belt; 14, synchronous pulley; 15, rotating shaft; 16, lead screw; 17, moving block; 18, drying and feeding assembly; 19, elliptical rotating shaft; 20, worm; 21, bidirectional lead screw; 22, screw sleeve; 23, connecting rod; 24, clamping plate; 25, through groove; 26, clamping groove; 27, sieve plate; 28, guide rod; 29, spring; 30, cam; 31, convex block; 32, first gear; 33, second gear; 34, toothed ring; 35, auger; 36, baffle; 37, cleaning brush; 38, drum sieve; 39, feed inlet; 40, discharge opening. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] In this embodiment, in order to solve the problem that it is difficult to adjust the distance between the crushing rollers according to different categories and different specifications of nuts after crushing in the existing multi-functional crushing and screening device for food processing.

[0021] Such as Figures 1-4As shown in the figure, a multifunctional crushing and screening device for food processing includes a crushing box 1. A drying box 2 is fixed on the upper surface of the crushing box 1. And a crushing mechanism 8 is installed inside the crushing box 1 at a position corresponding to the lower part of the drying box 2. The crushing mechanism 8 includes a number of crushing rollers 12 arranged at equal intervals inside the crushing box 1. A moving block 17 is rotatably connected to one side of the crushing roller 12. A rotating shaft 15 rotatably connected to the inside of the crushing box 1 is sleeved inside the bottom end of the moving block 17. One of the moving blocks 17 is fixedly connected to the rotating shaft 15, and the other moving blocks 17 are rotatably connected to the rotating shaft 15. A lead screw 16 is sleeved outside the rotating shaft 15 corresponding to the outside of the moving block 17. The pitches between the lead screws 16 are in arithmetic progression. For example, the pitch of the first movable nut is P, the second is 2P, the third is 3P, and so on. A worm gear 11 is fixed to the other side of the crushing roller 12. A worm 20 is engaged below the worm gear 11. An oval rotating shaft 19 rotatably connected to the inside of the crushing box 1 penetrates through the inside of the worm 20. Due to the oval shape of the oval rotating shaft 19, the worm 20 can slide on the oval rotating shaft 19. At the same time, when the oval rotating shaft 19 rotates, it can drive the worm 20 to rotate, and the worm 20 is slidably connected to the oval rotating shaft 19. One side of the oval rotating shaft 19 penetrates and extends outside the crushing box 1 and is fixed with a second motor 5. Synchronous wheels 14 are rotatably connected to one side of the crushing box 1 at positions corresponding to the cam 30, the rotating shaft 15, and the oval rotating shaft 19. The synchronous belt 13 and the synchronous wheels 14 are used to drive the crushing mechanism 8 and the screening assembly 10 to form a linkage effect. Both the oval rotating shaft 19 and the cam 30 are fixedly connected to the synchronous wheels 14, and the rotating shaft 15 is rotatably connected to the synchronous wheels 14. The three synchronous wheels 14 are rotatably connected by the synchronous belt 13.

[0022] During crushing, the nuts after screening and drying fall into the crushing mechanism 8. By rotating the bidirectional lead screw 21, the nut 22 is driven to move. The two nuts 22 move and cooperate with the connecting rod 23 to drive the clamping plate 24 to form an extending effect. When the clamping plate 24 completely extends out of the rotating shaft 15 and forms a snap fit with the card slot 26, at this time, the second motor 5 is started, and the synchronous wheels 14 and the synchronous belt 13 are used to drive the rotating shaft 15 and the oval rotating shaft 19 to rotate synchronously. During the rotation of the rotating shaft 15, the moving block 17 is driven to move, and then the crushing roller 12 is driven to move. When the distance between the crushing rollers 12 meets the nut crushing requirements, the bidirectional lead screw 21 is rotated in the reverse direction to drive the clamping plate 24 to retract into the rotating shaft 15. At this time, the oval rotating shaft 19 continues to rotate and cooperates with the worm 20 and the worm gear 11 to drive the crushing roller 12 to rotate, so as to crush the nuts.

[0023] Embodiment Two:

[0024] In this embodiment, in order to solve the problems in the prior art that in the multi-functional crushing and screening device for food processing, when crushing nuts, there is a lot of moisture inside the nuts, resulting in easy adhesion between the kernels and the shells, and at the same time, the sizes of the nuts are different, resulting in different crushing effects.

[0025] As Figures 6-7 shown, the embodiment is a multi-functional crushing and screening device for food processing. There is also a drying and feeding component 18 installed inside the drying box 2, and a small material outlet 4 is opened at the bottom on one side of the drying box 2. The bottom of the drying box 2 is in an inclined structure with the horizontal direction. The drying and feeding component 18 includes a second gear 33 rotatably connected to one side inside the drying box 2. Two first gears 32 rotatably connected to the inside of the drying box 2 are symmetrically engaged at the upper and lower ends of the second gear 33. And one side of the second gear 33 penetrates and extends to the outside of the drying box 2 and is fixed with a first motor 3. A drum screen 38 is rotatably connected inside the drying box 2. The drum screen 38 is in an inclined structure with the horizontal direction to prevent smaller nuts from being discharged through the feeding port 40. A toothed ring 34 engaged with the first gear 32 is fixed at a position corresponding to the first gear 32 inside one side of the drum screen 38. A feeding port 39 is fixed at a position corresponding to the inside of the drum screen 38 on one side of the drying box 2; One side of each of the two first gears 32 is respectively fixed with an auger 35 and a cleaning brush 37. A baffle 36 is fixed inside the drying box 2 at a position corresponding to the auger 35. A feeding port 40 is opened inside one side of the drum screen 38. A partition is arranged inside the drying box 2 at a position corresponding to the feeding port 40 to prevent nuts from being discharged through the small material outlet 4 through the gap.

[0026] When crushing nuts, pour the nuts into the inside of the drum screen 38 from the feeding port 39. The drying box 2 dries and dehumidifies the nuts. At the same time, start the first motor 3 to drive the first gear 32 to rotate in cooperation with the second gear 33. The first gear 32 rotates synchronously to drive the drum screen 38 to rotate. The drum screen 38 rotates to screen the nuts and improve the overall drying effect. The screened nuts are discharged through the small material outlet 4; At the same time, during the rotation of the two first gears 32, the cleaning brush 37 and the auger 35 are respectively driven to rotate. The cleaning brush 37 cleans the nuts and the drum screen 38, and the auger 35 drives the nuts to move. As the nuts continue to move, finally they fall into the crushing box 1 through the feeding port 40, so as to carry out crushing processing on the dried nuts.

[0027] Embodiment Three:

[0028] In this embodiment, in order to solve the problem in the prior art that after crushing by the multi-functional crushing and screening device for food processing, the kernels and the shells are easily mixed, resulting in difficult separation.

[0029] As Figure 5As shown in the figure, the embodiment is a multifunctional crushing and screening device for food processing. Below the crushing mechanism 8, there is an air separator 9 fixed inside the crushing box 1. Below the air separator 9, there is a screening assembly 10 installed inside the crushing box 1. At the front end of the crushing box 1, a discharge port 6 and a waste discharge port 7 are respectively opened corresponding to the positions of the air separator 9 and the screening assembly 10; The screening assembly 10 includes two sieve plates 27 arranged inside the crushing box 1. The sieve plates 27 are inclined structures with respect to the horizontal direction. At the four corners of the sieve plates 27, there are guide rods 28 fixed inside the crushing box 1 passing through. The outer layer of the guide rods 28 is sleeved with springs 29 fixed between the crushing box 1 and the sieve plates 27. At the bottom of the upper sieve plate 27 and the top of the lower sieve plate 27, there are convex blocks 31 fixed. Between the two convex blocks 31, there is a cam 30 rotatably connected inside the crushing box 1.

[0030] After being crushed, the nuts are first preliminarily screened for fruit shells by the air separator 9. Then the kernels fall into the screening assembly 10. At this time, driven by the linkage effect of the synchronous belt 13 and the synchronous pulley 14, the cam 30 rotates. The rotation of the cam 30 forms intermittent and orderly impacts on the convex blocks 31, and together with the springs 29, drives the two sieve plates 27 to form a screening effect. The upper sieve plate 27 screens out larger kernels and possible remaining fruit shells together, which is convenient for further subdivision later. The lower sieve plate 27 completely screens out the medium-sized kernels. Finally, the smaller kernels and possible remaining small fruit shell debris fall to the bottom layer inside the crushing box 1, thereby completely separating the kernels from the fruit shells, effectively crushing the nuts, and facilitating subsequent further processing.

[0031] The working process and principle of the present invention: Step 1: When crushing nuts, pour the nuts into the drum sieve 38 from the feed port 39. The nuts are dried and dehumidified by the drying box 2. At the same time, start the first motor 3 to drive the first gear 32 to rotate through the second gear 33. The synchronous rotation of the first gear 32 drives the drum sieve 38 to rotate. The rotation of the drum sieve 38 screens the nuts and improves the overall drying effect. The screened nuts are discharged through the small material outlet 4; At the same time, during the rotation of the two first gears 32, the cleaning brush 37 and the auger 35 are respectively driven to rotate. The cleaning brush 37 cleans the nuts and the drum sieve 38, and the auger 35 drives the nuts to move. As the nuts continue to move, finally they fall into the crushing box 1 through the feeding port 40, thereby performing crushing processing on the dried nuts; Step 2: During crushing, the nuts after screening and drying fall into the interior of the crushing mechanism 8. By rotating the bidirectional lead screw 21, the nut sleeves 22 are driven to move. The movement of the two nut sleeves 22 cooperates with the connecting rod 23 to drive the clamping plate 24 to form an extended effect. When the clamping plate 24 completely extends out of the interior of the rotating shaft 15 and engages with the card slot 26, at this time, the second motor 5 is started, and the synchronous pulley 14 and the synchronous belt 13 are used to drive the rotating shaft 15 and the elliptical rotating shaft 19 to rotate synchronously. During the rotation of the rotating shaft 15, the moving block 17 is driven to move, and then the crushing roller 12 is driven to move. When the distance between the crushing rollers 12 meets the nut crushing requirements, the bidirectional lead screw 21 is rotated in the reverse direction to drive the clamping plate 24 to retract into the interior of the rotating shaft 15. At this time, the elliptical rotating shaft 19 continues to rotate, and the worm 20 and the worm gear 11 are used to drive the crushing roller 12 to rotate, so as to crush the nuts; Step 3: The nuts after crushing are first subjected to preliminary husk screening by the air separator 9, and then the kernels fall into the interior of the screening assembly 10. At this time, the cam 30 is driven to rotate by the linkage effect of the synchronous belt 13 and the synchronous pulley 14. The rotation of the cam 30 forms intermittent and orderly impacts on the convex block 31, and the two sieve plates 27 are driven to form a screening effect in cooperation with the spring 29. The upper sieve plate 27 screens out the larger kernels and the possibly remaining husks together, which is convenient for further subdivision later. The lower sieve plate 27 completely screens out the medium-sized kernels. Finally, the smaller kernels and the possibly remaining fine husk debris fall to the bottom layer of the interior of the crushing box 1, so as to completely separate the kernels from the husks, effectively crush the nuts, and at the same time facilitate further processing later.

[0032] In summary, the nuts are poured into the drying box 2 through the feeding port 39, and the drying and feeding assembly 18 is used to dehumidify and preliminarily screen the nuts. Then, the distance between the crushing rollers 12 of the crushing mechanism 8 is adjusted to be adapted to the corresponding nut category specifications, so as to protect the kernels inside the nuts as much as possible and avoid excessive damage. Finally, the air separator 9 and the screening assembly 10 are used to separate the husks from the kernels, so as to facilitate subsequent unified processing.

[0033] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A multifunctional crushing and screening device for food processing, comprising a crushing box (1), characterized in that: A drying box (2) is fixed on the upper surface of the crushing box (1), and a crushing mechanism (8) is installed in the crushing box (1) at a position corresponding to the bottom of the drying box (2), a drying feeding assembly (18) is installed in the drying box (2), and a small material outlet (4) is provided at the bottom of one side of the drying box (2), a wind separator (9) fixed to the inside of the crushing box (1) is provided below the crushing mechanism (8), a screening assembly (10) installed in the inside of the crushing box (1) is provided below the wind separator (9), and a material discharge port (6) and a debris discharge port (7) are respectively provided at the front end of the crushing box (1) at positions corresponding to the wind separator (9) and the screening assembly (10).

2. A multifunctional crushing and screening device for food processing according to claim 1, characterized in that: The crushing mechanism (8) comprises a plurality of crushing rollers (12) equidistantly arranged inside a crushing box (1); one side of the crushing roller (12) is rotatably connected to a moving block (17); a bottom end of the moving block (17) is internally sleeved with a rotating shaft (15) rotatably connected to the inside of the crushing box (1); one of the moving blocks (17) is fixedly connected to the rotating shaft (15); the other moving blocks (17) are rotatably connected to the rotating shaft (15); and an outer layer of the rotating shaft (15) is sleeved with a screw rod (16) corresponding to an outer layer of the moving block (17).

3. A multifunctional crushing and screening device for food processing according to claim 2, characterized in that: A worm wheel (11) is fixed to the other side of the crushing roller (12), a worm (20) is meshed below the worm wheel (11), an elliptical shaft (19) rotatably connected to the inside of the crushing box (1) is passed through the inside of the worm (20), and the worm (20) and the elliptical shaft (19) are slidably connected, and a second motor (5) is fixed to one side of the elliptical shaft (19) that passes through and extends to the outside of the crushing box (1).

4. A multifunctional crushing and screening device for food processing according to claim 2, characterized in that: The screening assembly (10) comprises two screen plates (27) arranged inside a crushing box (1), the four corners of the screen plates (27) being connected through guide rods (28) fixed inside the crushing box (1), and the outer layer of the guide rods (28) being sleeved with springs (29) fixed between the crushing box (1) and the screen plates (27).

5. A multifunctional crushing and screening device for food processing according to claim 4, characterized in that: A cam (31) is fixed to the bottom of the upper sieve plate (27) and the top of the lower sieve plate (27), and a cam (30) rotatably connected to the inside of the crushing box (1) is provided between the two cams (31).

6. A multifunctional crushing and screening device for food processing according to claim 5, characterized in that: A synchronous wheel (14) is rotatably connected to a position of the cam (30), the rotating shaft (15) and the elliptical rotating shaft (19) on one side of the crushing box (1); the elliptical rotating shaft (19) and the cam (30) are fixedly connected to the synchronous wheel (14); the rotating shaft (15) and the synchronous wheel (14) are rotatably connected; and the three synchronous wheels (14) are rotatably connected to each other via a synchronous belt (13).

7. A multifunctional crushing and screening device for food processing according to claim 6, characterized in that: A bidirectional screw rod (21) is rotatably connected inside the rotating shaft (15), two screw sleeves (22) are symmetrically sleeved on the outer ends of the bidirectional screw rod (21), and one side of the bidirectional screw rod (21) passes through the rotating shaft (15) and extends to the outside of the synchronous wheel (14), two connecting rods (23) are symmetrically rotatably connected on both sides of the screw sleeve (22), and one side of the two connecting rods (23) on the same side are rotatably connected to a clamping plate (24), through grooves (25) are provided at positions corresponding to the clamping plates (24) on both sides of the rotating shaft (15), and clamping grooves (26) are provided at positions corresponding to the through grooves (25) on both sides of the synchronous wheel (14).

8. The multifunctional crushing and screening device for food processing according to claim 1, characterized in that: The drying and feeding assembly (18) comprises a second gear (33) rotatably connected to one side of the interior of the drying box (2); the upper and lower ends of the second gear (33) are symmetrically meshed with two first gears (32) rotatably connected to the interior of the drying box (2); one side of the second gear (33) penetrates and extends to the exterior of the drying box (2) where a first motor (3) is fixed; the interior of the drying box (2) is rotatably connected to a drum screen (38); a meshing gear ring (34) is fixed at a position corresponding to the first gear (32) on one side of the drum screen (38); and a feed port (39) is fixed at a position corresponding to the interior of the drum screen (38) on one side of the drying box (2).

9. A multifunctional crushing and screening device for food processing according to claim 8, characterized in that: An auger (35) and a cleaning brush (37) are fixed to one side of each of the two first gears (32), a baffle (36) is fixed inside the drying box (2) at a position corresponding to the auger (35), and a material discharge port (40) is provided inside one side of the drum screen (38).

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