Screening device for powdery food essence production

Abstract

The invention belongs to the technical field of essence production equipment, and particularly relates to a screening device for powdery food essence production, which comprises a horizontally arranged screening barrel, and a polygonal barrel is rotatably connected in the screening barrel; openings are formed in multiple faces of the polygonal cylinder, and filter screens corresponding to the openings are arranged on the polygonal cylinder. The screening barrel is fixedly connected with a feeding pipe capable of conveying powdery food essence into the polygonal barrel, and a discharging structure is arranged at the bottom of the screening barrel. A material uniformizing barrel is fixedly connected into the screening barrel, an opening is formed in the side, away from the discharging structure, of the material uniformizing barrel, and a material uniformizing structure matched with the material uniformizing barrel is arranged on the screening barrel. A rotating cavity swings in a reciprocating mode in a certain angle range on the screening barrel. A fan-shaped frame is arranged on the rotating cavity, wherein the fan-shaped frame rotates along with the rotating cavity and slides in the radial direction of the rotating cavity in a reciprocating mode, and an opening is formed in the upper portion of the fan-shaped frame. The invention provides the screening device for producing the powdery food essence, which can be used for circularly crushing and screening agglomerated powder in the powdery essence.

Description

Technical Field

[0001] The invention belongs to the technical field of flavor production equipment, and in particular relates to a screening device for producing powdered food flavor. Background Art

[0002] ‌Powdered food flavor‌ is a powdered flavor that is mainly used in food processing to enhance the aroma and taste of food. Powdered food flavor is usually made by mixing, blending and processing a variety of spices. It has a strong aroma and good stability, and can maintain a stable aroma effect in harsh environments such as high temperature and high humidity.

[0003] When producing powdered food flavors, the production process of powdered food flavors usually includes the steps of raw material preparation, reaction synthesis, spray drying, screening and packaging; after the powdered food flavors are formed into powder by spray drying, the powdered food flavors are screened by a screening device to remove larger particles and impurities in the flavor powder to ensure the particle uniformity of the finished flavor powder.

[0004] At present, the screening structure of the screening device is relatively simple, and the powder flavor is mostly screened and filtered through a simple filter. Therefore, when the screening device is used, since there is a lot of agglomerated powder in the flavor powder obtained by spray drying, the agglomerated powder is easy to clog the filter, affecting the screening effect of the filter. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a screening device for producing powdered food flavors, which is capable of cyclically crushing and screening agglomerated powders in powdered flavors.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a screening device for producing powdered food flavor, comprising a screening barrel arranged horizontally, a polygonal cylinder rotatably connected in the screening barrel; openings are arranged on multiple faces of the polygonal cylinder, and a filter screen corresponding to the openings is arranged on the polygonal cylinder; a feed pipe capable of conveying powdered food flavor into the polygonal cylinder is fixedly connected to the screening barrel, and a discharge structure is arranged at the bottom of the screening barrel; A material equalizing barrel is fixedly connected in the screening barrel, and an opening is provided on the side of the material equalizing barrel away from the discharging structure, and a material equalizing structure cooperating with the material equalizing barrel is provided on the screening barrel; a rotating cavity is provided on the screening barrel, which swings back and forth along a certain angle range, and a fan-shaped frame is provided on the rotating cavity, and an opening is provided on the upper side, which slides back and forth along the radial direction of the rotating cavity as the rotating cavity rotates, and the powdered food flavor can be driven into the fan-shaped frame as the polygonal barrel rotates, and the fan-shaped frame can drive the powdered food flavor in the fan-shaped frame into the material equalizing barrel as the rotating cavity rotates; filtering holes are evenly distributed on the bottom of the fan-shaped frame, circulation holes are evenly distributed on the material equalizing barrel, and a crushing structure for crushing the powdered food flavor is provided below the material equalizing barrel.

[0007] Furthermore, a circulating motor is fixedly connected to the screening barrel, and a crank is fixedly connected to the output end of the circulating motor; a connecting rod is rotatably connected to the crank, and the other end of the connecting rod is rotatably connected to the middle of the rotating cavity.

[0008] Furthermore, an inner support frame is fixedly connected in the screening barrel, and an inner gear ring is fixedly connected to the inner support frame; a planetary gear meshing with the inner gear ring is rotatably connected to the rotating cavity, and a driving rod is coaxially fixedly connected to the planetary gear; a traction rod is rotatably connected to the driving rod, and a slider that can slide radially along the rotating cavity is rotatably connected to the traction rod, and the slider is fixedly connected to the fan-shaped frame; a fan-shaped hole corresponding to the slider is provided on the inner support frame, and a rotating plate for sealing the fan-shaped hole is fixedly connected to the rotating cavity.

[0009] Furthermore, the material balancing structure includes a material balancing motor fixedly connected to the screening barrel, and an output end of the material balancing motor is fixedly connected to a material balancing propeller arranged in the material balancing barrel.

[0010] Furthermore, a baffle corresponding to the fan-shaped frame is fixedly connected to the material balancing cylinder; a conical cylinder is fixedly connected to one end of the material balancing cylinder away from the material balancing motor, a waste pipe is fixedly connected to one end of the conical cylinder away from the material balancing cylinder, and the end of the conical cylinder close to the waste pipe is the small end.

[0011] Furthermore, the crushing structure includes a crushing motor fixedly connected to the screening barrel, and the output end of the crushing motor is fixedly connected to an input wheel; the input wheel is meshed with an output wheel, and the output wheel is fixedly connected to a synchronous shaft; a plurality of active bevel gears are fixedly connected to the synchronous shaft, and a driven bevel gear is meshed with the active bevel gear; a transmission housing is fixedly connected in the screening barrel, and the active bevel gear and the driven bevel gear are both rotatably connected to the transmission housing; a universal joint is fixedly connected to the driven bevel gear, and a crushing shaft is connected to the universal joint, and a crushing knife is fixedly connected to the crushing shaft; a plurality of material stripping plates are rotatably connected to the transmission housing, and the crushing shaft is rotatably connected to the corresponding material stripping plates.

[0012] Furthermore, a worm is fixedly connected to the synchronization shaft, and a worm wheel is meshed on the worm; a swing rod is coaxially fixed to the worm wheel, and a push rod is rotatably connected to the swing rod, and the push rod is rotatably connected to the middle part of one of the material removal plates; a synchronization rod is rotatably connected to the material removal plate, and multiple material removal plates are rotatably connected to the synchronization rod.

[0013] Furthermore, the discharging structure includes a discharging cylinder fixedly connected to the screening barrel, and a discharging pipe is fixedly connected to one end of the discharging cylinder; a conveying motor is fixedly connected to the discharging cylinder, and a discharging screw propeller arranged in the discharging cylinder is fixedly connected to the output end of the conveying motor.

[0014] Furthermore, a screening motor is fixedly connected to the screening barrel, a driving wheel is fixedly connected to the output end of the screening motor, and an outer gear ring meshing with the driving wheel is coaxially fixedly connected to the polygonal cylinder.

[0015] Furthermore, the inner wall of the polygonal cylinder is evenly distributed with partition plates, and the partition plates are arranged between adjacent filter screens.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is in use, the powdered food flavor flows into the polygonal cylinder through the feed pipe, and the polygonal cylinder is rotated, and then the powdered food flavor is screened through multiple filter screens of the polygonal cylinder to ensure the particle uniformity of the finished flavor powder.

[0017] 2. When the present invention is in use, through the arrangement of the polygonal cylinder, the rotating cavity, the fan-shaped frame, the material distribution cylinder, the crushing structure, etc., when the polygonal cylinder rotates, the polygonal cylinder drives the powdered food flavor to enter the fan-shaped frame; while the rotating cavity drives the fan-shaped frame to swing back and forth, the fan-shaped frame slides radially along the rotating cavity and rotates with the rotating cavity, so that the agglomerated powder in the fan-shaped frame enters the material distribution cylinder through the opening on the material distribution cylinder, and the agglomerated powder is evenly dropped to the crushing structure through the circulation hole by the material distribution structure, and the agglomerated powder is crushed by the crushing structure to improve the product qualification rate of the flavor powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the internal structure of the screening barrel in the present invention; Figure 4 It is a schematic diagram of the internal structure of the polygonal tube in the present invention; Figure 5 It is a structural schematic diagram of the polygonal tube in the present invention; Figure 6 It is a schematic diagram of the coordination state of the circulation plate, crank, connecting rod, rotating plate and other structures in the present invention; Figure 7 It is a schematic diagram of the internal structure of the rotating chamber in the present invention; Figure 8 It is a structural schematic diagram of the crushing structure in the present invention; Fig. 9 It is a schematic diagram of the internal structure of the transmission housing in the present invention; Fig.10 For the present invention Fig. 9 A magnified schematic diagram of the middle A area; In the figure: 1, screening barrel, 2, feed pipe, 3, discharge barrel, 4, discharge pipe, 5, screening motor, 6, material distribution motor, 7, circulation motor, 8, conveying motor, 9, polygonal barrel, 10, filter screen, 11, partition plate, 12, fan-shaped frame, 13, material distribution barrel, 14, baffle, 15, material distribution propeller, 16, material shifting plate, 17, crushing knife, 18, inner support frame, 19, driving wheel, 20, outer gear ring, 21, rotating plate, 22. Crank, 23. Connecting rod, 24. Rotating cavity, 25. Internal gear ring, 26. Planetary gear, 27. Driving rod, 28. Traction rod, 29. Slider, 30. Crushing motor, 31. Input wheel, 32. Output wheel, 33. Transmission housing, 34. Synchronizing rod, 35. Swinging rod, 36. Push rod, 37. Synchronizing shaft, 38. Driving bevel gear, 39. Driven bevel gear, 40. Universal joint, 41. Worm, 42. Worm wheel. DETAILED DESCRIPTION

[0019] A screening device for producing powdered food flavors, such as Figure 1-10 As shown, it includes a horizontally arranged screening barrel 1, in which a polygonal cylinder 9 is rotatably connected; openings are provided on multiple faces of the polygonal cylinder 9, and a filter screen 10 corresponding to the openings is provided on the polygonal cylinder 9; a feed pipe 2 that can transport powdered food flavor into the polygonal cylinder 9 is fixedly connected to the screening barrel 1, and a discharge structure is provided at the bottom of the screening barrel 1.

[0020] When the present invention is in use, the powdered food flavor flows into the polygonal cylinder 9 through the feed pipe 2, and the polygonal cylinder 9 is rotated to screen the powdered food flavor through the multiple filter screens 10 of the polygonal cylinder 9 to ensure the particle uniformity of the finished flavor powder.

[0021] A material equalizing barrel 13 is fixedly connected in the screening barrel 1, and an opening is provided on the side of the material equalizing barrel 13 away from the discharging structure, and a material equalizing structure cooperating with the material equalizing barrel 13 is provided on the screening barrel 1; a rotating cavity 24 is provided on the screening barrel 1, which swings back and forth along a certain angle range, and a fan-shaped frame 12 with an opening on the top is provided on the rotating cavity 24, which slides back and forth along the radial direction of the rotating cavity 24 as the rotating cavity 24 rotates, and the powdered food flavor can be driven into the fan-shaped frame 12 as the polygonal barrel 9 rotates, and the fan-shaped frame 12 can drive the powdered food flavor in the fan-shaped frame 12 into the material equalizing barrel 13 as the rotating cavity 24 rotates; filtering holes are evenly distributed on the bottom of the fan-shaped frame 12, and circulation holes are evenly distributed on the material equalizing barrel 13, and a crushing structure for crushing the powdered food flavor is provided below the material equalizing barrel 13.

[0022] When the polygonal cylinder 9 rotates, the polygonal cylinder 9 drives the powdered food flavor to enter the fan-shaped frame 12, so that the rotating cavity 24 swings back and forth. While the rotating cavity 24 drives the fan-shaped frame 12 to swing back and forth, the fan-shaped frame 12 slides radially along the rotating cavity 24, and the powdered food flavor is screened for the second time through the filter holes on the fan-shaped frame 12; after screening by the fan-shaped frame 12, the agglomerated powder with a larger size remaining in the fan-shaped frame 12, as the rotating cavity 24 rotates, makes the agglomerated powder in the fan-shaped frame 12 enter the equalizing barrel 13 through the opening on the equalizing barrel 13, and the agglomerated powder is evenly dropped to the pulverizing structure through the circulation hole through the equalizing structure, and the agglomerated powder is pulverized by the pulverizing structure to improve the product qualification rate of the flavor powder.

[0023] Furthermore, if Figure 3 , 6 As shown in , 7, in order to make the rotating cavity 24 reciprocate within a certain angle range, a circulating motor 7 is fixedly connected to the screening barrel 1, and a crank 22 is fixedly connected to the output end of the circulating motor 7; a connecting rod 23 is rotatably connected to the crank 22, and the other end of the connecting rod 23 is rotatably connected to the middle part of the rotating cavity 24; a crank 22 rocker mechanism is formed by the crank 22, the connecting rod 23, and the rotating cavity 24, so that the circulating motor 7 drives the crank 22 to rotate, and the crank 22 drives the rotating cavity 24 to reciprocate through the connecting rod 23.

[0024] Furthermore, in order to enable the fan-shaped frame 12 to slide radially along the rotating cavity 24 as the rotating cavity 24 rotates, an inner support frame 18 is fixedly connected in the screening barrel 1, and an inner gear ring 25 is fixedly connected to the inner support frame 18; a planetary gear 26 meshing with the inner gear ring 25 is rotatably connected to the rotating cavity 24, and a driving rod 27 is coaxially fixed to the planetary gear 26; a traction rod 28 is rotatably connected to the driving rod 27, and a slider 29 that can slide radially along the rotating cavity 24 is rotatably connected to the traction rod 28, and the slider 29 is fixedly connected to the fan-shaped frame 12; a fan-shaped hole corresponding to the slider 29 is provided on the inner support frame 18, and a rotating plate 21 for sealing the fan-shaped hole is fixedly connected to the rotating cavity 24.

[0025] When the rotating cavity 24 rotates, the rotating cavity 24 drives the planetary gear 26 to rotate along the circumference. Under the action of the inner ring gear 25, the planetary gear 26 rotates along the rotating cavity 24; the planetary gear 26 drives the driving rod 27 to rotate, and the driving rod 27 drives the slider 29 to slide radially along the rotating cavity 24 through the traction rod 28, and the slider 29 drives the fan-shaped frame 12 to slide radially along the rotating cavity 24.

[0026] Furthermore, if Figure 4As shown, in order to make the powdered food flavor fall evenly through the material equalizing barrel 13, the material equalizing structure includes a material equalizing motor 6 fixedly connected to the screening barrel 1, and the output end of the material equalizing motor 6 is fixedly connected to a material equalizing propeller 15 arranged in the material equalizing barrel 13; the material equalizing propeller 15 is driven to rotate by the material equalizing motor 6, and the material equalizing propeller 15 drives the powdered food flavor to move in the material equalizing barrel 13.

[0027] Furthermore, in order to allow more powdered food flavor in the fan-shaped frame 12 to flow into the material-distributing barrel 13, a baffle 14 corresponding to the fan-shaped frame 12 is fixedly connected to one side of the opening on the material-distributing barrel 13 to guide the powdered food flavor and allow more powdered food flavor to flow into the material-distributing barrel 13; the end of the material-distributing barrel 13 away from the material-distributing motor 6 is fixedly connected to a conical barrel, and the end of the conical barrel away from the material-distributing barrel 13 is fixedly connected to a waste pipe, and the end of the conical barrel close to the waste pipe is the small end; the agglomerated powder flows out through the conical barrel and the waste pipe under the action of the material-distributing propeller 15.

[0028] Furthermore, if Figure 8-10 As shown, the crushing structure includes a crushing motor 30 fixedly connected to the screening barrel 1, and the output end of the crushing motor 30 is fixedly connected to an input wheel 31; an output wheel 32 is meshed on the input wheel 31, and a synchronous shaft 37 is fixedly connected to the output wheel 32; a plurality of active bevel gears 38 are fixedly connected to the synchronous shaft 37, and a driven bevel gear 39 is meshed on the active bevel gear 38; a transmission housing 33 is fixedly connected in the screening barrel 1, and the active bevel gear 38 and the driven bevel gear 39 are both rotatably connected to the transmission housing 33; a universal joint 40 is fixedly connected to the driven bevel gear 39, and a crushing shaft is connected to the universal joint 40, and a crushing knife 17 is fixedly connected to the crushing shaft; a plurality of stripping plates 16 are rotatably connected to the transmission housing 33, and the crushing shaft is rotatably connected to the corresponding stripping plates 16.

[0029] When the crushing structure is in use, the crushing motor 30 is started, and the crushing motor 30 drives the synchronous shaft 37 to rotate through the input wheel 31 and the output wheel 32; the synchronous shaft 37 drives the active bevel gear 38 to rotate, and the active bevel gear 38 drives the driven bevel gear 39 to rotate, and the driven bevel gear 39 drives the crushing shaft to rotate through the universal joint 40, and the crushing shaft crushes the agglomerated powder through the crushing knife 17; in addition, the material stripping plate 16 is rotated along the transmission housing 33 to drive the uniformity of the powdered food flavor under the transmission housing 33; in addition, when the material stripping plate 16 rotates, it can drive the crushing shaft and the crushing knife 17 thereon to swing, so as to increase the crushing range of the crushing knife 17 and improve the crushing effect of the crushing knife 17.

[0030] Furthermore, in order to rotate the material stripping plate 16, a worm 41 is fixedly connected to the synchronization shaft 37, and a worm wheel 42 is meshed on the worm 41; a swing rod 35 is coaxially fixedly connected to the worm wheel 42, and a push rod 36 is rotatably connected to the swing rod 35, and the push rod 36 is rotatably connected to the middle part of one of the material stripping plates 16; a synchronization rod 34 is rotatably connected to the material stripping plate 16, and multiple material stripping plates 16 are rotatably connected to the synchronization rod 34.

[0031] When the synchronization shaft 37 rotates, the synchronization shaft 37 drives the worm 41 to rotate, and the worm 41 drives the worm wheel 42 to rotate; the worm wheel 42 drives the swing rod 35 to rotate, and the swing rod 35 drives the material stripping plate 16 to swing back and forth through the push rod 36; through the setting of the synchronization rod 34, multiple material stripping plates 16 rotate synchronously.

[0032] Furthermore, if Figure 1 and Figure 2 As shown, in order to discharge the powdered food flavor after screening, the discharging structure includes a discharging barrel 3 fixedly connected to the screening barrel 1, and a discharging pipe 4 is fixedly connected to one end of the discharging barrel 3; a conveying motor 8 is fixedly connected to the discharging barrel 3, and a discharging screw propeller arranged in the discharging barrel 3 is fixedly connected to the output end of the conveying motor 8; the powdered food flavor flows out through the discharging barrel 3 and the discharging pipe 4 under the action of the discharging screw propeller.

[0033] Furthermore, if Figure 3 and Figure 5 As shown, in order to rotate the polygonal cylinder 9, a screening motor 5 is fixedly connected to the screening barrel 1, a driving wheel 19 is fixedly connected to the output end of the screening motor 5, and an outer gear ring 20 meshing with the driving wheel 19 is coaxially fixedly connected to the polygonal cylinder 9; the driving wheel 19 is driven to rotate by the screening motor 5, and the driving wheel 19 drives the polygonal cylinder 9 to rotate through the outer gear ring 20.

[0034] Furthermore, if Figure 5 As shown, in order to facilitate the polygonal tube 9 to drive the powdered food flavor to move with it when it rotates, partition plates 11 are evenly distributed on the inner wall of the polygonal tube 9, and the partition plates 11 are arranged between adjacent filter screens 10. The partition plates 11 drive the powdered food flavor to move between adjacent partition plates 11 and be filtered through the filter screen 10.

[0035] The working process of the present invention is: When the present invention is in use, the powdered food flavor flows into the polygonal cylinder 9 through the feed pipe 2, the screening motor 5 is started, the screening motor 5 drives the driving wheel 19 to rotate, and the driving wheel 19 drives the polygonal cylinder 9 to rotate through the outer gear ring 20; the polygonal cylinder 9 drives the powdered food flavor to move through the partition plate 11, and the powdered food flavor is screened through the multiple filter screens 10 of the polygonal cylinder 9 to ensure the particle uniformity of the finished flavor powder product.

[0036] At the same time, the polygonal cylinder 9 drives the powdered food flavor into the fan-shaped frame 12; the circulating motor 7 is started, the circulating motor 7 drives the crank 22 to rotate, and the crank 22 drives the rotating cavity 24 to swing back and forth through the connecting rod 23; when the rotating cavity 24 rotates, the rotating cavity 24 drives the planetary gear 26 to rotate along the circumference, and under the action of the inner gear ring 25, the planetary gear 26 rotates along the rotating cavity 24; the planetary gear 26 drives the driving rod 27 to rotate, and the driving rod 27 drives the slider 29 to rotate along the radial direction of the rotating cavity 24 through the traction rod 28. The slider 29 drives the fan-shaped frame 12 to slide radially along the rotating cavity 24, so that the fan-shaped frame 12 rotates with the rotating cavity 24 and slides radially along the rotating cavity 24; the powdered food flavor is secondary screened through the filter holes on the fan-shaped frame 12, and after screening by the fan-shaped frame 12, the agglomerated powder with a larger size remaining in the fan-shaped frame 12 enters the evenly feeding barrel 13 through the opening on the evenly feeding barrel 13 as the rotating cavity 24 rotates; the agglomerated powder falls evenly to the crushing structure through the circulation hole.

[0037] The pulverizing motor 30 is started, and the pulverizing motor 30 drives the synchronous shaft 37 to rotate through the input wheel 31 and the output wheel 32; the synchronous shaft 37 drives the active bevel gear 38 to rotate, and the active bevel gear 38 drives the driven bevel gear 39 to rotate, and the driven bevel gear 39 drives the pulverizing shaft to rotate through the universal joint 40, and the pulverizing shaft pulverizes the agglomerated powder through the pulverizing knife 17; at the same time, the synchronous shaft 37 drives the worm 41 to rotate, and the worm 41 drives the worm wheel 42 to rotate; the worm wheel 42 drives the swing rod 35 to rotate, and the swing rod 35 drives the material stripping plate 16 to swing back and forth along the transmission housing 33 through the push rod 36; through the setting of the synchronous rod 34, multiple material stripping plates 16 are rotated synchronously; when the material stripping plate 16 rotates, it can drive the pulverizing shaft and the pulverizing knife 17 thereon to swing, so as to increase the pulverizing range of the pulverizing knife 17 and improve the pulverizing effect of the pulverizing knife 17.

[0038] The powdered food flavor after screening flows into the discharging barrel 3, and the conveying motor 8 is started, which drives the discharging screw to rotate, so that the powdered food flavor flows out through the discharging barrel 3 and the discharging pipe 4 under the action of the discharging screw.

Claims

1. A screening device for producing powdered food flavor, characterized in that: The invention comprises a horizontally arranged screening barrel (1), wherein a polygonal barrel (9) is rotatably connected inside the screening barrel (1); openings are provided on multiple faces of the polygonal barrel (9), and a filter screen (10) corresponding to the openings is provided on the polygonal barrel (9); a feed pipe (2) is fixedly connected to the screening barrel (1) and is capable of conveying powdered food flavoring into the polygonal barrel (9); and a discharge structure is provided at the bottom of the screening barrel (1); A material distribution barrel (13) is fixedly connected to the screening barrel (1), and an opening is provided on a side of the material distribution barrel (13) away from the discharge structure. The screening barrel (1) is provided with a material distribution structure cooperating with the material distribution barrel (13); a rotating cavity (24) is provided on the screening barrel (1) to swing back and forth within a certain angle range, and a fan-shaped frame (12) is provided on the rotating cavity (24) and has an opening on the top thereof, which slides back and forth along the radial direction of the rotating cavity (24) as the rotating cavity (24) rotates. The powdered food flavor can be driven into the fan-shaped frame (12) as the polygonal barrel (9) rotates, and the fan-shaped frame (12) can drive the powdered food flavor in the fan-shaped frame (12) into the material distribution barrel (13) as the rotating cavity (24) rotates; filtering holes are evenly distributed on the bottom of the fan-shaped frame (12), and circulation holes are evenly distributed on the material distribution barrel (13). A crushing structure for crushing the powdered food flavor is provided below the material distribution barrel (13).

2. The screening device for producing powdered food flavor according to claim 1, characterized in that: A circulating motor (7) is fixedly connected to the screening barrel (1), and a crank (22) is fixedly connected to the output end of the circulating motor (7); a connecting rod (23) is rotatably connected to the crank (22), and the other end of the connecting rod (23) is rotatably connected to the middle of the rotating cavity (24).

3. The screening device for producing powdered food flavor according to claim 2, characterized in that: An inner support frame (18) is fixedly connected inside the screening barrel (1), and an inner gear ring (25) is fixedly connected to the inner support frame (18); a planetary gear (26) meshing with the inner gear ring (25) is rotatably connected to the rotating cavity (24), and a driving rod (27) is coaxially fixedly connected to the planetary gear (26); a traction rod (28) is rotatably connected to the driving rod (27), and a slider (29) that can slide radially along the rotating cavity (24) is rotatably connected to the traction rod (28), and the slider (29) is fixedly connected to the fan-shaped frame (12); a fan-shaped hole corresponding to the slider (29) is provided on the inner support frame (18), and a rotating plate (21) for sealing the fan-shaped hole is fixedly connected to the rotating cavity (24).

4. The screening device for producing powdered food flavor according to claim 1, characterized in that: The material balancing structure comprises a material balancing motor (6) fixedly connected to the screening barrel (1), and an output end of the material balancing motor (6) is fixedly connected to a material balancing propeller (15) disposed in the material balancing cylinder (13).

5. The screening device for producing powdered food flavor according to claim 4, characterized in that: The material balancing cylinder (13) is fixedly connected to a baffle plate (14) corresponding to the fan-shaped frame (12); the end of the material balancing cylinder (13) away from the material balancing motor (6) is fixedly connected to a conical cylinder, the end of the conical cylinder away from the material balancing cylinder (13) is fixedly connected to a waste pipe, and the end of the conical cylinder close to the waste pipe is a small end.

6. The screening device for producing powdered food flavor according to claim 1, characterized in that: The pulverizing structure comprises a pulverizing motor (30) fixedly connected to a screening barrel (1), wherein an input wheel (31) is fixedly connected to the output end of the pulverizing motor (30); an output wheel (32) is meshed with the input wheel (31), and a synchronous shaft (37) is fixedly connected to the output wheel (32); a plurality of active bevel gears (38) are fixedly connected to the synchronous shaft (37), and a driven bevel gear (39) is meshed with the active bevel gear (38); a transmission housing (33) is fixedly connected inside the screening barrel (1), and the active bevel gear (38) and the driven bevel gear (39) are both rotatably connected to the transmission housing (33); a universal joint (40) is fixedly connected to the driven bevel gear (39), a pulverizing shaft is connected to the universal joint (40), and a pulverizing blade (17) is fixedly connected to the pulverizing shaft; a plurality of material-diverting plates (16) are rotatably connected to the transmission housing (33), and the pulverizing shaft is rotatably connected to the corresponding material-diverting plates (16).

7. The screening device for producing powdered food flavor according to claim 6, characterized in that: A worm (41) is fixedly connected to the synchronization shaft (37), and a worm wheel (42) is meshed with the worm (41); a swing rod (35) is coaxially fixedly connected to the worm wheel (42), a push rod (36) is rotatably connected to the swing rod (35), and the push rod (36) is rotatably connected to the middle part of one of the material shifting plates (16); a synchronization rod (34) is rotatably connected to the material shifting plate (16), and a plurality of the material shifting plates (16) are rotatably connected to the synchronization rod (34).

8. The screening device for producing powdered food flavor according to claim 1, characterized in that: The discharge structure comprises a discharge barrel (3) fixedly connected to the screening barrel (1), one end of the discharge barrel (3) being fixedly connected to a discharge pipe (4); a conveying motor (8) being fixedly connected to the discharge barrel (3), and an output end of the conveying motor (8) being fixedly connected to a discharge screw propeller disposed in the discharge barrel (3).

9. The screening device for producing powdered food flavor according to claim 1, characterized in that: The screening barrel (1) is fixedly connected to a screening motor (5), an output end of the screening motor (5) is fixedly connected to a driving wheel (19), and the polygonal barrel (9) is coaxially fixedly connected to an outer gear ring (20) meshing with the driving wheel (19).

10. The screening device for producing powdered food flavor according to claim 1, characterized in that: The inner wall of the polygonal cylinder (9) is evenly distributed with partition plates (11), and the partition plates (11) are arranged between adjacent filter screens (10).

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