Brick tea processing and screening equipment and screening process thereof

Abstract

The invention relates to the technical field of brick tea processing, in particular to brick tea processing and screening equipment and a screening technology thereof.The brick tea processing and screening equipment comprises a base, a screening device installed at the top end of the base, a discharging device installed at the top end of one side of the screening device and a drying device installed on the screening device, and the screening device and the discharging device are in transmission connection through a belt. A second rotating rod rotates to drive a scattering part to rotate so as to scatter brick tea raw materials, meanwhile, the second rotating rod rotates to drive a disc to rotate, so that a swing block swings, a flattening part slides back and forth to flatten the falling brick tea raw materials, the brick tea raw materials are screened step by step through a first screen and a second screen, and the brick tea raw materials are uniformly scattered. Meanwhile, the brick tea raw materials are dried by the drying device.

Description

Technical Field

[0001] The invention relates to the technical field of brick tea processing, in particular to brick tea processing screening equipment and a screening process thereof. Background Art

[0002] Tea bricks, also known as steamed and pressed tea, are a type of reprocessed compressed tea. Tea leaves are molded into bricks or other fixed shapes through processes such as pile fermentation and high-temperature steaming and pressing. In the production process of brick tea, screening of raw materials is a crucial link.

[0003] The authorization announcement number CN114887879B discloses a tea sorting device, which relates to the field of tea sorting technology, including an outer shell, and also includes: a driving component for driving the reciprocating motion of the screening mesh plate, a dumping component, the dumping component is used to tilt the screening mesh plate, a push plate, the push plate is limited and slidably connected to the upper surface of the screening mesh plate, and a linkage component, under the action of the dumping component, after the screening mesh plate is tilted, it can synchronously switch the linkage component to a transmission connection with the driving component, so that when the driving component is in operation at this time, it no longer drives the screening mesh plate to move, and under the action of the linkage component, the push plate slides along the surface of the screening mesh plate. The invention has the ability to automatically sort tea leaves, discharge small stones and other debris mixed inside, facilitate subsequent processing and production, and cooperate with the tilting of the screening mesh plate and the push plate to move along the tilted screening mesh plate toward the discharge port to completely push out the tea leaves on the surface of the screening mesh plate for unloading, avoid residue, and do not need secondary cleaning.

[0004] It can be seen that the current brick tea screening equipment has low screening efficiency, does not break up and flatten the tea leaves to be screened, which affects the screening quality of the tea leaves, does not perform drying treatment, and has insufficient screening accuracy for brick tea raw materials of different particle sizes.

[0005] In view of this, we propose a brick tea processing screening equipment and screening process. Summary of the invention

[0006] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a brick tea processing screening equipment and a screening process thereof to solve the problems raised in the above background technology.

[0007] On the one hand, in order to achieve the above-mentioned purpose, the present invention provides a brick tea processing and screening device, comprising a base, a screening device installed on the top of the base, a feeding device installed on the top of one side of the screening device, and a drying device installed on the screening device, wherein the screening device and the feeding device are connected by a belt drive, a group of support columns are welded and fixed on the top surface of the base, and the top of the support column is threadedly fixed to the feeding device by a fastening bolt;

[0008] The screening device comprises a screening box, a first screen and a second screen placed obliquely inside the screening box, a plurality of shaking members rotatably connected to the bottom end of the screening box, a first rotating rod rotatably connected to the inside of the base, and a group of cams fixed to the first rotating rod, wherein a first bevel gear is welded and fixed to the bottom end of one of the shaking members, a second bevel gear is coaxially connected to the first rotating rod, and the first bevel gear is meshed with the second bevel gear;

[0009] The feeding device comprises a feeding box, a second rotating rod rotatably connected to the feeding box, a breaking piece arranged on the second rotating rod, a disc arranged on the outside of the feeding box and coaxially connected to the second rotating rod, a swing block rotatably connected to the outside of the feeding box, and a flattening piece slidably connected to the bottom opening of the feeding box, the second rotating rod and the first rotating rod are connected by the belt transmission, the swing block is composed of a half gear and a long strip block, the long strip block is provided with a long strip hole, the side edge of the disc is provided with a protrusion, the protrusion extends out of the long strip hole and is slidably connected thereto, the flattening piece comprises an inclined flat plate, a connecting plate welded and fixed at the center of one side of the flat plate, and a rack welded and fixed on the connecting plate, the rack meshes with the half gear;

[0010] The drying device includes a U-shaped air duct placed at the bottom end of the outer wall of the screening box, a plurality of hot air ducts and a hot air blower arranged on the U-shaped air duct, the hot air duct extends into the interior of the screening box and is located below the second screen, and the air outlet of the hot air blower is connected to the U-shaped air duct through a telescopic hose.

[0011] As a further improvement of the technical solution, the top surface of the base is provided with a plurality of mounting grooves matched with the rocking member, and the top surface of the base is provided with a plurality of cam grooves matched with the size of the cam along the central axis.

[0012] As a further improvement of the technical solution, a motor is installed on one side of the top of the base, the output shaft of the motor is coaxially connected to the first rotating rod, and a groove for accommodating the motor is provided on the top surface of the base.

[0013] As a further improvement of the present technical solution, the aperture of the first sieve is larger than the aperture of the second sieve, and the first, second and third discharge ports are respectively provided at the first sieve, the second sieve and the upper bottom plate on the side of the screening box away from the unloading device.

[0014] As a further improvement of the technical solution, the shaking member includes a right-angle rod, a vertical rod welded and fixed to the end of the horizontal section of the right-angle rod, and two springs sleeved on the vertical rod and respectively placed on the upper and lower sides of the lower bottom plate of the screening box.

[0015] As a further improvement of the present technical solution, when the protruding portion of the cam rotates to the top, the spring located at the top is in a compressed state, and when the protruding portion of the cam rotates to the bottom, the spring located at the bottom is in a compressed state.

[0016] As a further improvement of the present technical solution, the breaking piece includes a pair of relatively arranged circular ring frames, a plurality of breaking rods are provided between the two circular ring frames, the diameter of the breaking piece is less than or equal to the length of the cross-section of the pipe through hole at the lower end of the discharge box, and the width of the breaking piece is less than or equal to the width of the cross-section of the pipe through hole at the lower end of the discharge box.

[0017] As a further improvement of the technical solution, a fixing rod is provided on the side of the material discharge box, and the fixing rod is rotatably connected to the swing block. A sliding hole matching the size of the connecting plate is opened on the side wall of the material discharge box.

[0018] As a further improvement of the technical solution, the top surface of the spreading plate is provided with a plurality of regularly distributed triangular blocks, and the connecting plate is provided with through holes.

[0019] On the other hand, the present invention also provides a brick tea processing and screening process, using the above-mentioned brick tea processing and screening equipment, comprising the following steps:

[0020] S1. First, put the tea raw materials into the unloading box, start the motor, drive the first rotating rod to rotate, and drive the second rotating rod to rotate through the belt, so that the scattering piece rotates to scatter the falling tea raw materials;

[0021] S2, then, the falling tea leaves fall on the spreading plate, the second rotating rod rotates, driving the disc to rotate, causing the swing block to swing, and the spreading plate slides back and forth along the sliding hole through the meshing half gear and the rack, so that the tea leaves are evenly sprinkled on the first screen;

[0022] S3, then, the first rotating rod rotates, and the second bevel gear and the first bevel gear meshing with each other drive the shaking member to rotate, so that the screening box shakes. At the same time, the first rotating rod rotates, driving the cam to rotate, squeezing the screening box to make it vibrate up and down, and the first screen and the second screen screen the tea raw materials;

[0023] S4. At the same time, the hot air blower is started, so that the hot air enters the U-shaped air guide pipe through the telescopic hose and is blown out through the hot air pipe to dry the brick tea raw materials in the screening box;

[0024] S5. Finally, the large tea leaves are taken out from the first discharge port, the medium tea leaves are taken out from the second discharge port, and the small tea leaves are taken out from the third discharge port.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The brick tea processing and screening equipment and screening process thereof, by rotating the second rotating rod to drive the breaking piece to rotate, the brick tea raw materials are broken up, and at the same time, the second rotating rod rotates to drive the disc to rotate, so that the swing block swings, so that the flattening piece slides back and forth, and the falling brick tea raw materials are flattened so that they fall evenly on the first screen.

[0027] 2. The brick tea processing screening equipment and screening process thereof rotate the first rotating rod to drive the shaking part to rotate, so that the screening box shakes, and at the same time the cam rotates to drive the screening box to shake up and down, so that the brick tea raw materials are screened step by step through the first screen and the second screen to obtain raw materials of different particle sizes.

[0028] 3. The brick tea processing and screening equipment and the screening process thereof dry the brick tea raw materials being screened through the provided hot air blower, U-shaped air duct and hot air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0030] Figure 1 It is one of the overall structural schematic diagrams of the present invention;

[0031] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0032] Figure 3 It is an exploded view of the overall structure of the present invention;

[0033] Figure 4 It is a cross-sectional view of the structure of the screening device of the present invention;

[0034] Figure 5 It is an exploded view of the screening device structure of the present invention;

[0035] Figure 6 It is an exploded view of the swinging member structure of the present invention;

[0036] Figure 7 It is a cross-sectional view of the structure of the material discharging device of the present invention;

[0037] Figure 8 It is an exploded view of the structure of the material discharging device of the present invention;

[0038] Fig. 9 It is a schematic diagram of the swing block structure of the present invention;

[0039] Fig.10 It is a schematic diagram of the flattening member structure of the present invention;

[0040] Fig.11 It is a structural schematic diagram of the drying device of the present invention;

[0041] The meaning of each number in the figure is:

[0042] 1. Base; 11. Support column; 12. Mounting slot; 13. Cam slot; 14. Groove;

[0043] 2. Screening device; 21. Screening box; 211. First discharge port; 212. Second discharge port; 213. Third discharge port; 22. First screen; 23. Second screen; 24. Shaking member; 241. Right-angle rod; 242. Vertical rod; 243. Spring; 25. First rotating rod; 26. Cam; 27. First bevel gear; 28. Second bevel gear;

[0044] 3. Material unloading device; 31. Material unloading box; 311. Fixed rod; 312. Sliding hole; 32. Second rotating rod; 33. Scattering piece; 331. Ring frame; 332. Scattering rod; 34. Disc; 341. Bump; 35. Swinging block; 351. Half gear; 352. Long strip block; 3521. Long strip hole; 36. Flattening piece; 361. Flattening plate; 3611. Triangular block; 362. Connecting plate; 3621. Rectangular hole; 363. Rack;

[0045] 4. Drying device; 41. U-shaped air guide pipe; 42. Hot air pipe; 43. Telescopic hose; 44. Hot air blower;

[0046] 5. Belt;

[0047] 6. Motor;

[0048] 7. Tighten the bolts. DETAILED DESCRIPTION

[0049] The details of the present invention can be more clearly understood by combining the accompanying drawings with the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as falling within the scope of the present invention. The terms "installation" and "connection" should be understood in a broad sense, which can be directly connected or indirectly connected through an intermediate medium.

[0050] The terms "central axis", "vertical", "horizontal", "front", "back", "up", "down", "left", "right", "top", "bottom", "inside", "outside" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0051] See also Figure 1-Figure 11 As shown, the present invention provides a brick tea processing and screening device, comprising a base 1, a screening device 2 installed on the top of the base 1, a feeding device 3 installed on the top of one side of the screening device 2, and a drying device 4 installed on the screening device 2, the screening device 2 and the feeding device 3 are connected by a belt 5, a group of support columns 11 are welded and fixed on the top surface of the base 1, and the top of the support column 11 is threadedly fixed to the feeding device 3 by a fastening bolt 7;

[0052] The screening device 2 includes a screening box 21, a first screen 22 and a second screen 23 placed obliquely inside the screening box 21, a plurality of shaking pieces 24 rotatably connected to the bottom end of the screening box 21, a first rotating rod 25 rotatably connected to the inside of the base 1, and a group of cams 26 fixed to the first rotating rod 25, the cam 26 rotates to drive the screening box 21 to vibrate up and down; a first bevel gear 27 is welded and fixed to the bottom end of one of the shaking pieces 24, a second bevel gear 28 is coaxially connected to the first rotating rod 25, and the first bevel gear 27 is meshed with the second bevel gear 28, so that the first rotating rod 25 rotates to drive the shaking piece 24 to rotate;

[0053] The material discharging device 3 comprises a material discharging box 31, a second rotating rod 32 rotatably connected to the material discharging box 31, a dispersing piece 33 arranged on the second rotating rod 32, a disc 34 arranged outside the material discharging box 31 and coaxially connected to the second rotating rod 32, a swing block 35 rotatably connected to the outside of the material discharging box 31, and a flattening piece 36 slidably connected to the bottom opening of the material discharging box 31. The second rotating rod 32 is connected to the first rotating rod 25 through a belt 5. The swing block 35 is composed of a half gear 351 and a long strip block 352. The strip block 352 is provided with an elongated hole 3521, and the side edge of the disk 34 is provided with a protrusion 341, which extends out of the elongated hole 3521 and is slidably connected thereto. The flattening member 36 includes an inclined flattening plate 361, a connecting plate 362 welded and fixed at the center of one side of the flattening plate 361, and a rack 363 welded and fixed on the connecting plate 362. The rack 363 is meshed with the half gear 351, and the half gear 351 rotates to drive the rack 363 to slide back and forth, thereby causing the flattening plate 361 to shake horizontally.

[0054] The drying device 4 includes a U-shaped air duct 41 placed at the bottom end of the outer wall of the screening box 21, a plurality of hot air ducts 42 and a hot air blower 44 arranged on the U-shaped air duct 41, the hot air duct 42 extends into the interior of the screening box 21 and is located below the second screen 23, and the air outlet of the hot air blower 44 is connected to the U-shaped air duct 41 through a telescopic hose 43.

[0055] Specifically, the top surface of the base 1 is provided with a plurality of mounting grooves 12 adapted to the rocking member 24 , and the mounting grooves 12 are used to install the rocking member 24 ; the top surface of the base 1 is provided with a plurality of cam grooves 13 adapted to the size of the cam 26 along the central axis.

[0056] Furthermore, a motor 6 is installed on one side of the top of the base 1, and the output shaft of the motor 6 is coaxially connected to the first rotating rod 25. A groove 14 for accommodating the motor 6 is provided on the top surface of the base 1, and the motor 6 provides power for the rotation of the first rotating rod 25.

[0057] Specifically, the aperture of the first sieve 22 is larger than the aperture of the second sieve 23. The side of the screening box 21 away from the unloading device 3 is provided with a first discharge port 211, a second discharge port 212 and a third discharge port 213 at the first sieve 22, the second sieve 23 and the upper bottom plate respectively. The first sieve 22 and the second sieve 23 with different apertures facilitate the grading and screening of the brick tea raw materials.

[0058] In addition, the shaking member 24 includes a right-angle rod 241, a vertical rod 242 welded and fixed to the end of the horizontal section of the right-angle rod 241, and two springs 243 sleeved on the vertical rod 242 and respectively placed on the upper and lower sides of the lower bottom plate of the screening box 21. The design of the spring 243 facilitates the up and down shaking of the screening box 21.

[0059] Furthermore, when the protruding portion of the cam 26 rotates to the top, the spring 243 located above is in a compressed state, and when the protruding portion of the cam 26 rotates to the bottom, the spring 243 located below is in a compressed state. When the cam 26 rotates, the cam 26 squeezes the screening box 21, causing the screening box 21 to shake up and down.

[0060] Specifically, the dispersing piece 33 includes a pair of relatively arranged circular ring frames 331, and a plurality of dispersing rods 332 are arranged between the two circular ring frames 331. The diameter of the dispersing piece 33 is less than or equal to the length of the cross-section of the pipe through hole at the lower end of the discharge box 31, and the width of the dispersing piece 33 is less than or equal to the width of the cross-section of the pipe through hole at the lower end of the discharge box 31. The dispersing piece 33 rotates to disperse the brick tea raw materials in the discharge box 31.

[0061] It is worth mentioning that a fixing rod 311 is provided on the side of the material box 31, and the fixing rod 311 is rotatably connected to the swing block 35, and the fixing rod 311 fixes the material box 31; a sliding hole 312 which is adapted to the size of the connecting plate 362 is opened on the side wall of the material box 31, and the sliding hole 312 facilitates the flattening piece 36 to slide back and forth.

[0062] Furthermore, a plurality of regularly distributed triangular blocks 3611 are provided on the top surface of the spreading plate 361, and the triangular blocks 3611 are convenient for dispersing and flattening the brick tea raw materials falling on the spreading plate 361; a rectangular hole 3621 is opened on the connecting plate 362, and the rectangular hole 3621 is used for the belt 5 to pass through.

[0063] The present invention also provides a brick tea processing and screening process, using the above-mentioned brick tea processing and screening equipment, comprising the following steps:

[0064] S1. First, put the tea material into the unloading box 31, start the motor 6, drive the first rotating rod 25 to rotate, drive the second rotating rod 32 to rotate through the belt 5, so that the scattering piece 33 rotates to scatter the falling tea material;

[0065] S2, then, the falling tea leaves fall on the spreading plate 361, the second rotating rod 32 rotates, driving the disc 34 to rotate, causing the swing block 35 to swing, and the spreading plate 361 slides back and forth along the sliding hole 312 through the meshing half gear 351 and the rack 363, so that the tea leaves are evenly scattered on the first screen 22;

[0066] S3, then, the first rotating rod 25 rotates, and the second bevel gear 28 and the first bevel gear 27 meshing with each other drive the shaking member 24 to rotate, so that the screening box 21 shakes. At the same time, the first rotating rod 25 rotates, driving the cam 26 to rotate, squeezing the screening box 21 to make it vibrate up and down, and the first screen 22 and the second screen 23 screen the tea raw materials;

[0067] S4. At the same time, the hot air blower 44 is started, so that the hot air enters the U-shaped air guide pipe 41 through the telescopic hose 43 and is blown out through the hot air pipe 42 to dry the brick tea raw materials in the screening box 21;

[0068] S5. Finally, the large tea leaves are taken out from the first discharge port 211 , the medium tea leaves are taken out from the second discharge port 212 , and the small tea leaves are taken out from the third discharge port 213 .

[0069] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A brick tea processing and screening device, comprising a base (1), a screening device (2) installed on the top of the base (1), a feeding device (3) installed on the top of one side of the screening device (2), and a drying device (4) installed on the screening device (2), characterized in that: The screening device (2) is connected to the feeding device (3) by a belt (5) transmission, a group of support columns (11) are welded and fixed on the top surface of the base (1), and the top ends of the support columns (11) are threadedly fixed to the feeding device (3) by fastening bolts (7); The screening device (2) comprises a screening box (21), a first screen (22) and a second screen (23) arranged in an inclined manner inside the screening box (21), a plurality of shaking members (24) rotatably connected to the bottom end of the screening box (21), a first rotating rod (25) rotatably connected to the inside of the base (1), and a group of cams (26) fixed to the first rotating rod (25), wherein a first bevel gear (27) is welded and fixed to the bottom end of one of the shaking members (24), a second bevel gear (28) is coaxially connected to the first rotating rod (25), and the first bevel gear (27) is meshed with the second bevel gear (28); The material unloading device (3) comprises a material unloading box (31), a second rotating rod (32) rotatably connected to the inside of the material unloading box (31), a disintegrating piece (33) arranged on the second rotating rod (32), a disc (34) arranged outside the material unloading box (31) and coaxially connected to the second rotating rod (32), a swing block (35) rotatably connected to the outside of the material unloading box (31), and a flattening piece (36) slidably connected to the bottom opening of the material unloading box (31), the second rotating rod (32) and the first rotating rod (25) are connected to each other through the belt (5), the swing block (35) is composed of a half gear (351) and a long strip block (352), the long strip block (352) is provided with a long strip hole (3521), the side edge of the disk (34) is provided with a protrusion (341), the protrusion (341) extends out of the long strip hole (3521) and is slidably connected thereto, the flattening member (36) comprises an inclined flattening plate (361), a connecting plate (362) welded and fixed to the center of one side of the flattening plate (361), and a rack (363) welded and fixed to the connecting plate (362), the rack (363) meshing with the half gear (351); The drying device (4) comprises a U-shaped air duct (41) disposed at the bottom end of the outer wall of the screening box (21), a plurality of hot air ducts (42) and a hot air blower (44) disposed on the U-shaped air duct (41), wherein the hot air duct (42) extends into the interior of the screening box (21) and is located below the second screen (23), and an air outlet of the hot air blower (44) is connected to the U-shaped air duct (41) via a telescopic hose (43).

2. The brick tea processing and screening equipment according to claim 1, characterized in that: The top surface of the base (1) is provided with a plurality of mounting grooves (12) adapted to the shaking member (24), and the top surface of the base (1) is provided with a plurality of cam grooves (13) adapted to the size of the cam (26) along the central axis.

3. The brick tea processing and screening equipment according to claim 2, characterized in that: A motor (6) is installed on one side of the top end of the base (1); the output shaft of the motor (6) is coaxially connected to the first rotating rod (25); and a groove (14) for accommodating the motor (6) is provided on the top surface of the base (1).

4. The brick tea processing and screening equipment according to claim 3, characterized in that: The aperture of the first screen (22) is larger than the aperture of the second screen (23), and the screening box (21) is provided with a first discharge port (211), a second discharge port (212) and a third discharge port (213) at the first screen (22), the second screen (23) and the upper bottom plate on a side away from the unloading device (3).

5. The brick tea processing and screening equipment according to claim 4, characterized in that: The shaking member (24) comprises a right-angle rod (241), a vertical rod (242) welded to the end of the horizontal section of the right-angle rod (241), and two springs (243) sleeved on the vertical rod (242) and respectively placed on the upper and lower sides of the lower bottom plate of the screening box (21).

6. The brick tea processing and screening equipment according to claim 5, characterized in that: When the protruding portion of the cam (26) rotates to the top, the spring (243) located at the top is in a compressed state, and when the protruding portion of the cam (26) rotates to the bottom, the spring (243) located at the bottom is in a compressed state.

7. The brick tea processing and screening equipment according to claim 6, characterized in that: The dispersing piece (33) comprises a pair of circular ring frames (331) arranged opposite to each other, a plurality of dispersing rods (332) are arranged between the two circular ring frames (331), the diameter of the dispersing piece (33) is smaller than or equal to the length of the cross section of the through hole of the pipeline at the lower end of the material box (31), and the width of the dispersing piece (33) is smaller than or equal to the width of the cross section of the through hole of the pipeline at the lower end of the material box (31).

8. The brick tea processing and screening equipment according to claim 7, characterized in that: A fixing rod (311) is provided on the side of the material discharge box (31), and the fixing rod (311) is rotatably connected to the swing block (35). A sliding hole (312) matching the size of the connecting plate (362) is opened on the side wall of the material discharge box (31).

9. The brick tea processing and screening equipment according to claim 8, characterized in that: The top surface of the spreading plate (361) is provided with a plurality of regularly distributed triangular blocks (3611), and the connecting plate (362) is provided with rectangular holes (3621).

10. A brick tea processing and screening process, using the brick tea processing and screening equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, tea leaves are placed in a feeding box (31), and a motor (6) is started to drive the first rotating rod (25) to rotate, and the second rotating rod (32) is driven to rotate via a belt (5), so that the scattering member (33) rotates to scatter the falling tea leaves; S2, the falling tea leaves fall on the spreading plate (361), the second rotating rod (32) rotates, driving the disc (34) to rotate, causing the swing block (35) to swing, and through the meshing half gear (351) and the rack (363), the spreading plate (361) slides back and forth along the sliding hole (312), so that the tea leaves are evenly scattered on the first screen (22); S3, then, the first rotating rod (25) rotates, and the second bevel gear (28) and the first bevel gear (27) mesh with each other drive the shaking member (24) to rotate, so that the screening box (21) shakes. At the same time, the first rotating rod (25) rotates, driving the cam (26) to rotate, squeezing the screening box (21) to make it vibrate up and down, and the first screen (22) and the second screen (23) screen the tea raw materials; S4. At the same time, the hot air blower (44) is started, so that the hot air enters the U-shaped air guide pipe (41) through the telescopic hose (43) and is then blown out through the hot air pipe (42) to dry the brick tea raw materials in the screening box (21); S5. Finally, the large tea leaves are taken out from the first discharge port (211), the medium tea leaves are taken out from the second discharge port (212), and the small tea leaves are taken out from the third discharge port (213).

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