Drying equipment and drying method for black tea

Abstract

The invention relates to the technical field of black tea production, discloses black tea drying equipment and a drying method, and solves the problem that black tea is non-uniformly dried at present. The black tea drying equipment comprises a drying box, a box door is hinged to the outer side of the drying box, a hot air pipe is fixedly connected to the outer side of the drying box, and an exhaust hole is formed in the top of the drying box; a lifting mechanism is arranged in the drying box, an anti-accumulation mechanism is arranged on the drying box, a turnover mechanism is arranged on the anti-accumulation mechanism, a collecting box is fixedly installed on the inner bottom wall of the drying box, a drawer is arranged in the collecting box, the anti-accumulation mechanism comprises a movable frame located in the drying box, and the inner side of the movable frame is rotationally connected with a supporting shaft; placing frames are fixedly connected to the ends, away from the movable frame, of the supporting shafts; according to the black tea drying device, through cooperation of the eccentric block, the movable frame, the cross rod, the spring and the fixing ring, the placing frame can vibrate conveniently, black tea is prevented from being stacked, and therefore the black tea can be evenly dried conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of black tea production, and in particular relates to a black tea drying device and a black tea drying method. Background Art

[0002] During the processing of black tea, a chemical reaction centered on enzymatic oxidation of tea polyphenols occurs. The chemical composition of fresh leaves changes greatly, with tea polyphenols reduced by more than 90%, and new ingredients such as theaflavins and thearubigins produced. The aroma substances are significantly increased compared to fresh leaves. Therefore, black tea has the characteristics of black tea, red soup, red leaves, and sweet and mellow taste. Among my country's black tea varieties, Keemun black tea is the most famous, and it is the second largest tea type in my country.

[0003] In the existing technology, hot air drying is generally used to dry black tea. However, due to the accumulation of black tea, the black tea is not dried completely. The black tea inside the piled material cannot be dried quickly, and after a long period of drying, the black tea on the outer layer will cause the problem of over-drying. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a black tea drying device and a drying method, which effectively solves the current problem of uneven drying of black tea.

[0005] To achieve the above object, the present invention provides the following technical solution: a black tea drying device, comprising a drying box, a box door is hinged on the outside of the drying box, a hot air duct is fixedly connected to the outside of the drying box, an exhaust hole is arranged on the top of the drying box, a lifting mechanism is arranged inside the drying box, an anti-accumulation mechanism is arranged on the drying box, a turning mechanism is arranged on the anti-accumulation mechanism, a collecting box is fixedly installed on the inner bottom wall of the drying box, and a drawer is arranged in the collecting box; The anti-accumulation mechanism comprises a movable frame located inside the drying box, the inner side of the movable frame is rotatably connected with a support shaft, the end of the support shaft away from the movable frame is fixedly connected with a placement frame, the bottom of the placement frame is evenly provided with a plurality of sieve holes, and the flip mechanism is used to drive the flipping of the placement frame to discharge the dried black tea, the interior of the drying box is symmetrically fixedly connected with two cross bars, the outer sides of the two cross bars are fixedly sleeved with fixed rings, the movable frame is movably sleeved on the outer sides of the two cross bars, the two fixed rings and the movable frame are fixedly connected with springs, and the two springs are respectively sleeved on the outer sides of the two cross bars; The anti-accumulation mechanism also includes a knocking component and a uniform dropping component. The knocking component is used to impact the movable frame to make the placement frame vibrate, the uniform dropping component is used to drop the black tea evenly inside the placement frame, and the lifting mechanism is used to drop the black tea accurately inside the sieve hole.

[0006] Preferably, the knocking assembly includes an L-shaped plate fixed to the top of the drying box, a driving motor is fixedly mounted on the L-shaped plate, a driving shaft is fixedly connected to the driving motor, the bottom end of the driving shaft extends to the interior of the drying box and is fixedly connected to an eccentric block, and the eccentric block is located on the outside of the movable frame.

[0007] Preferably, the uniform material dropping assembly includes a barrel located above the drying box, the top of the barrel is fixedly connected to a feed hopper, the bottom of the barrel is fixedly connected to a discharge pipe, a solenoid valve is provided on the discharge pipe, the top of the drying box is fixedly connected to an outer ring and an inner ring, the discharge pipe is located between the outer ring and the inner ring, a plurality of openings are provided at equal angles on the top of the drying box, each opening is located above the placement frame, and each opening is located between the outer ring and the inner ring, and the bottom end of the discharge pipe is in contact with the top of the drying box.

[0008] Preferably, the bottom of the barrel is fixedly connected with a bottom ring, the bottom of the bottom ring is symmetrically fixedly connected with two support columns, the bottom ends of the two support columns are provided with support balls, and the two support balls are respectively located at the top of the outer ring and the top of the inner ring.

[0009] Preferably, a vertical shaft and a driven shaft are rotatably connected between the L-shaped plate and the drying box, the vertical shaft is located on the inner side of the inner ring, the driven shaft is located on the outer side of the outer ring, a conveyor belt is transmission-connected between the driven shaft and the vertical shaft, a sleeve plate is fixedly sleeved on the outer side of the barrel, the sleeve plate is fixed to the outer side of the vertical shaft, a reduction gear is fixedly installed on the outer side of the driven shaft, a driving gear is fixedly installed on the outer side of the driving shaft, and the driving gear is meshingly connected with the reduction gear.

[0010] Preferably, the flipping mechanism includes an inner rod located outside the placement frame, the inner rod is fixed to the inner side of the movable frame, a sleeve block is fixedly sleeved on the middle part of the outer side of the inner rod, a side shaft is fixedly connected to the side of the placement frame away from the support shaft, an end of the side shaft away from the placement frame is rotatably connected to the sleeve block, a bracket is movably sleeved on the outer side of the inner rod, a toothed plate is fixedly connected to the bracket, an external gear is fixedly installed on the outer side of the side shaft, and the external gear is meshingly connected to the toothed plate.

[0011] Preferably, a cylinder 1 is fixedly installed between the bracket and the movable frame, a positioning cylinder is fixedly sleeved on the outer side of the inner rod, and the bracket abuts against the positioning cylinder.

[0012] Preferably, the lifting mechanism includes a plurality of feed pipes fixed at equal angles on the top wall of the drying box, the feed pipes correspond to the openings one by one, a lifting pipe is movably sleeved on the outer side of each feed pipe, and the bottom end of each lifting pipe extends into the placement frame.

[0013] Preferably, a U-shaped round rod is fixedly connected to the inner top wall of the drying box, a lifting plate is movably sleeved on the outer side of the U-shaped round rod, a second cylinder is fixedly installed between the top of the lifting plate and the drying box, and the lifting plate is fixedly sleeved on the outer side of each lifting tube.

[0014] A method for drying black tea comprises the following steps: Step 1: First, start the driving motor to drive the barrel to rotate so that the black tea falls into the placement frame evenly and intermittently, and at the same time drive the eccentric block to rotate and hit the movable frame, so that the placement frame vibrates, so as to achieve uniform drying of the black tea; Step 2: Then start the cylinder 2 to drive each lifting tube to rise, so as to avoid the placement frame when it is turned over; Step 3: Finally, start cylinder 1 to drive the placement frame to flip, so that the dried black tea can be collected.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention facilitates the black tea to fall into the placement frame through the cooperation between the barrel and the discharge pipe and the electromagnetic valve and the opening, and facilitates the rotation of the barrel so that the black tea can be intermittently and evenly dropped into the placement frame through the cooperation between the driving motor, the driving shaft, the driving gear, the reduction gear, the driven shaft, the conveyor belt, the vertical shaft and the sleeve plate, and facilitates the vibration of the placement frame to avoid the accumulation of black tea through the cooperation between the eccentric block, the movable frame, the cross bar, the spring and the fixed ring, so that the black tea can be evenly dried; 2. The invention facilitates the flipping of the placing frame through the coordination among the cylinder 1, the bracket, the inner rod, the tooth plate, the outer gear, the side shaft and the supporting shaft, so that the dried black tea in the placing frame can fall into the drawer for collection; 3. The invention facilitates the accurate falling of black tea into the placement frame through the coordination between the feeding pipe and the lifting pipe, and facilitates the rise of each lifting pipe to avoid the placement frame through the coordination between the second cylinder, the U-shaped round rod and the lifting plate, thereby preventing the placement frame from colliding with the lifting pipe during the flipping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] In the attached picture: Figure 1 This is a schematic diagram of the structure of the black tea drying equipment of the present invention; Figure 2 This is a schematic diagram of the anti-accumulation mechanism structure of the present invention; Figure 3 It is a schematic diagram of the barrel structure of the present invention; Figure 4 This is a schematic diagram of the bottom ring structure of the present invention; Figure 5 It is a schematic diagram of the structure of the flipping mechanism of the present invention; Figure 6 It is a schematic diagram of the lifting mechanism structure of the present invention.

[0018] In the figure: 1, drying box; 2, anti-stacking mechanism; 201, movable frame; 202, placement frame; 203, sieve hole; 204, spring; 205, fixed ring; 206, outer ring; 207, barrel; 208, vertical shaft; 209, conveyor belt; 2010, L-shaped plate; 2011, driving motor; 2012, driven shaft; 2013, reduction gear; 2014, driving gear; 2015, driving shaft; 2016, eccentric block; 2017, supporting shaft; 2018, cross bar; 2019, inner ring; 2020, discharge pipe; 2021, Solenoid valve; 2022, bottom ring; 2023, feed hopper; 2024, sleeve plate; 2025, support ball; 2026, support column; 3, flip mechanism; 301, inner rod; 302, bracket; 303, outer gear; 304, side shaft; 305, sleeve block; 306, positioning cylinder; 307, cylinder one; 308, tooth plate; 4, lifting mechanism; 401, feed pipe; 402, lifting pipe; 403, lifting plate; 404, U-shaped round rod; 405, cylinder two; 5, exhaust hole; 6, collection box; 7, drawer; 8, box door; 9, hot air duct. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Embodiment 1, by Figure 1-Figure 6 The present invention relates to a drying device for black tea, comprising a drying box 1, a box door 8 is hinged on the outer side of the drying box 1, a hot air duct 9 is fixedly connected to the outer side of the drying box 1, the hot air duct 9 is used to pass hot air into the drying box 1 to dry the black tea, an exhaust hole 5 is provided on the top of the drying box 1, the exhaust hole 5 is used to discharge the hot steam generated during drying, a lifting mechanism 4 is provided inside the drying box 1, an anti-stacking mechanism 2 is provided on the drying box 1, a turning mechanism 3 is provided on the anti-stacking mechanism 2, a collecting box 6 is fixedly installed on the inner bottom wall of the drying box 1, a drawer 7 is provided in the collecting box 6, and the collection box 6 and the drawer 7 are provided to facilitate the collection of broken tea or dried black tea.

[0021] Embodiment 2, on the basis of embodiment 1, the anti-stacking mechanism 2 comprises a movable frame 201 located inside the drying box 1, the inner side of the movable frame 201 is rotatably connected with a support shaft 2017, the end of the support shaft 2017 away from the movable frame 201 is fixedly connected with a placement frame 202, the bottom of the placement frame 202 is evenly provided with a plurality of sieve holes 203, the flipping mechanism 3 is used to drive the flipping of the placement frame 202 to discharge the dried black tea, the interior of the drying box 1 is symmetrically fixedly connected with two cross bars 2018, the outer sides of the two cross bars 2018 are fixedly sleeved with fixing rings 205, the movable frame 201 is movably sleeved on the outer sides of the two cross bars 2018, the two fixing rings 205 and the movable frame 201 are fixedly connected with springs 204, and the two springs 204 are respectively Sleeved on the outside of the two cross bars 2018, the anti-accumulation mechanism 2 also includes a knocking component and a uniform dropping component. The knocking component is used to impact the movable frame 201 to make the placement frame 202 vibrate, and the uniform dropping component is used to evenly drop the black tea into the placement frame 202. The lifting mechanism 4 is used to accurately drop the black tea into the sieve hole 203. The knocking component includes an L-shaped plate 2010 fixed to the top of the drying box 1, and a driving motor 2011 is fixedly installed on the L-shaped plate 2010. The driving motor 2011 is fixedly connected to a driving shaft 2015. The bottom end of the driving shaft 2015 extends to the inside of the drying box 1 and is fixedly connected to an eccentric block 2016. The eccentric block 2016 is located on the outside of the movable frame 201. The uniform dropping component includes a material The top of the barrel 207 is fixedly connected with a feed hopper 2023, the bottom of the barrel 207 is fixedly connected with a discharge pipe 2020, and a solenoid valve 2021 is provided on the discharge pipe 2020. The top of the drying box 1 is fixedly connected with an outer ring 206 and an inner ring 2019, and the discharge pipe 2020 is located between the outer ring 206 and the inner ring 2019. The top of the drying box 1 is provided with a plurality of openings at equal angles, each of which is located above the placement frame 202, and each of which is located between the outer ring 206 and the inner ring 2019. The bottom end of the discharge pipe 2020 is fitted with the top of the drying box 1, and the bottom of the barrel 207 is fixedly connected with a bottom ring 2022, and the bottom of the bottom ring 2022 is symmetrically fixedly connected with two support columns 2026, and the bottoms of the two support columns 2026 are fixedly connected with the bottoms of the two support columns 2026. Both ends are provided with supporting balls 2025, and the two supporting balls 2025 are respectively located at the top of the outer ring 206 and the inner ring 2019. When the barrel 207 rotates, the two supporting balls 2025 are driven to roll on the top of the outer ring 206 and the inner ring 2019 respectively, so as to support the barrel 207, thereby ensuring the stability of the barrel 207 during rotation. A vertical shaft 208 and a driven shaft 2012 are rotatably connected between the L-shaped plate 2010 and the drying box 1. The vertical shaft 208 is located on the inner side of the inner ring 2019, and the driven shaft 2012 is located on the outer side of the outer ring 206. A conveyor belt 209 is drivingly connected between the driven shaft 2012 and the vertical shaft 208. A sleeve plate 2024 is fixedly sleeved on the outer side of the barrel 207, and the sleeve plate 2024 is fixed to the outer side of the vertical shaft 208.A reduction gear 2013 is fixedly installed on the outer side of the driven shaft 2012, and a driving gear 2014 is fixedly installed on the outer side of the driving shaft 2015. The driving gear 2014 is meshed and connected with the reduction gear 2013; First, pour the black tea into the barrel 207 through the feed hopper 2023, then open the solenoid valve 2021, and the black tea falls into the inside of the placement frame 202 through the discharge pipe 2020 and the corresponding opening, then start the drive motor 2011, drive the drive shaft 2015 to rotate, because the drive gear 2014 is meshed with the reduction gear 2013, thereby driving the driven shaft 2012 to rotate, and the vertical shaft 208 is driven to rotate through the conveyor belt 209, and the barrel 207 is driven to rotate in a circle through the sleeve plate 2024, and at the same time, the discharge pipe 2020 is connected between the outer ring 206 and the inner ring 206. When the driving shaft 2015 rotates, the eccentric block 2016 is driven to rotate and hit the movable frame 201. Under the action of the elastic force of the two springs 204, the movable frame 201 slides back and forth along the two cross bars 2018, so that the placing frame 202 vibrates, thereby avoiding the accumulation of black tea in the placing frame 202 and achieving uniform drying of the black tea. Finally, the black tea is sieved through the sieve holes 203, so that the broken tea passes through the sieve holes 203 and falls into the drawer 7 for collection.

[0022] Embodiment 3, on the basis of embodiment 1, the flip mechanism 3 includes an inner rod 301 located outside the placement frame 202, the inner rod 301 is fixed to the inner side of the movable frame 201, a sleeve block 305 is fixedly sleeved on the middle part of the outer side of the inner rod 301, a side shaft 304 is fixedly connected to the side of the placement frame 202 away from the support shaft 2017, and an end of the side shaft 304 away from the placement frame 202 is rotatably connected to the sleeve block 305, and a bracket 302 is movably sleeved on the outer side of the inner rod 301, and the bracket A tooth plate 308 is fixedly connected to the bracket 302, an outer side of the side shaft 304 is fixedly installed with an outer gear 303, the outer gear 303 is meshed with the tooth plate 308, a cylinder 307 is fixedly installed between the bracket 302 and the movable frame 201, a positioning cylinder 306 is fixedly sleeved on the outer side of the inner rod 301, the bracket 302 abuts against the positioning cylinder 306, when the bracket 302 abuts against the positioning cylinder 306, the placement frame 202 is in a horizontal state, which is convenient for better drying of black tea; First, drawer 7 is pulled out to process the broken tea leaves inside it, and then a new drawer 7 is replaced. Then cylinder 1 307 is started to drive bracket 302 to slide along inner rod 301 and drive tooth plate 308 to move horizontally. Since tooth plate 308 is meshed with outer gear 303, side shaft 304 is driven to rotate and placement frame 202 is turned over. Finally, the dried black tea falls into drawer 7 under the action of gravity for collection.

[0023] Embodiment 4, on the basis of embodiment 1, the lifting mechanism 4 comprises a plurality of material delivery pipes 401 fixed at equal angles on the inner top wall of the drying box 1, the material delivery pipes 401 correspond to the openings one by one, the outer side of each material delivery pipe 401 is movably sleeved with a lifting pipe 402, the bottom end of each lifting pipe 402 extends into the placement frame 202, a U-shaped round rod 404 is fixedly connected to the inner top wall of the drying box 1, a lifting plate 403 is movably sleeved on the outer side of the U-shaped round rod 404, a cylinder 2 405 is fixedly installed between the top of the lifting plate 403 and the drying box 1, and the lifting plate 403 is fixedly sleeved on the outer side of each lifting pipe 402; The bottom end of each lifting tube 402 extends into the placement frame 202, so that the black tea can be accurately dropped and prevented from falling outside the placement frame 202. When the dried black tea needs to be collected, the cylinder 2 405 first drives the lifting plate 403 to slide upward along the U-shaped round rod 404, and drives each lifting tube 402 to rise to avoid the placement frame 202, and finally avoids the collision between the lifting tube 402 and the placement frame 202 during the flipping process.

Claims

1. A black tea drying device, comprising a drying oven (1), characterized in that: The drying box (1) has a door (8) hingedly connected to the outside of the drying box (1), a hot air pipe (9) fixedly connected to the outside of the drying box (1), an exhaust hole (5) provided at the top of the drying box (1), a lifting mechanism (4) provided inside the drying box (1), an anti-accumulation mechanism (2) provided on the drying box (1), a turning mechanism (3) provided on the anti-accumulation mechanism (2), a collection box (6) fixedly mounted on the inner bottom wall of the drying box (1), and a drawer (7) provided inside the collection box (6); The anti-stacking mechanism (2) comprises a movable frame (201) located inside the drying box (1); the inner side of the movable frame (201) is rotatably connected to a support shaft (2017); one end of the support shaft (2017) away from the movable frame (201) is fixedly connected to a placement frame (202); a plurality of sieve holes (203) are evenly arranged at the bottom of the placement frame (202); a turning mechanism (3) is used to drive the placement frame (202) to turn over to discharge the dried black tea; two cross bars (2018) are symmetrically fixedly connected inside the drying box (1); the outer sides of the two cross bars (2018) are fixedly sleeved with fixing rings (205); the movable frame (201) is movably sleeved on the outer sides of the two cross bars (2018); springs (204) are fixedly connected between the two fixing rings (205) and the movable frame (201); and the two springs (204) are respectively sleeved on the outer sides of the two cross bars (2018); The anti-stacking mechanism (2) further comprises a knocking assembly and a uniform dropping assembly, wherein the knocking assembly is used to strike the movable frame (201) to cause the placement frame (202) to vibrate, the uniform dropping assembly is used to uniformly drop the black tea inside the placement frame (202), and the lifting mechanism (4) is used to accurately drop the black tea inside the sieve hole (203).

2. The black tea drying device according to claim 1, characterized in that: The knocking assembly comprises an L-shaped plate (2010) fixed to the top of the drying box (1), a driving motor (2011) being fixedly mounted on the L-shaped plate (2010), a driving shaft (2015) being fixedly connected to the driving motor (2011), a bottom end of the driving shaft (2015) extending into the interior of the drying box (1) and being fixedly connected to an eccentric block (2016), and the eccentric block (2016) being located on the outside of the movable frame (201).

3. The black tea drying device according to claim 1, characterized in that: The uniform material dropping assembly comprises a barrel (207) located above the drying box (1); the top of the barrel (207) is fixedly connected to a feed hopper (2023); the bottom of the barrel (207) is fixedly connected to a discharge pipe (2020); a solenoid valve (2021) is provided on the discharge pipe (2020); the top of the drying box (1) is fixedly connected to an outer ring (206) and an inner ring (2019); the discharge pipe (220) is located between the outer ring (206) and the inner ring (2019); a plurality of openings are provided at equal angles on the top of the drying box (1); each opening is located above the placement frame (202), and each opening is located between the outer ring (206) and the inner ring (2019); and the bottom end of the discharge pipe (2020) is in contact with the top of the drying box (1).

4. The black tea drying device according to claim 3, characterized in that: The bottom of the barrel (207) is fixedly connected to a bottom ring (2022), and the bottom of the bottom ring (2022) is symmetrically fixedly connected to two support columns (2026), and the bottom ends of the two support columns (2026) are each provided with a support ball (2025), and the two support balls (2025) are respectively located at the top of the outer ring (206) and the top of the inner ring (2019).

5. The black tea drying device according to claim 2, characterized in that: A vertical shaft (208) and a driven shaft (2012) are rotatably connected between the L-shaped plate (2010) and the drying box (1); the vertical shaft (208) is located on the inner side of the inner ring (2019); the driven shaft (2012) is located on the outer side of the outer ring (206); a conveyor belt (209) is transmission-connected between the driven shaft (2012) and the vertical shaft (208); a sleeve plate (2024) is fixedly sleeved on the outer side of the barrel (207); the sleeve plate (2024) is fixed on the outer side of the vertical shaft (208); a reduction gear (2013) is fixedly installed on the outer side of the driven shaft (2012); a driving gear (2014) is fixedly installed on the outer side of the driving shaft (2015); and the driving gear (2014) is meshingly connected to the reduction gear (2013).

6. The black tea drying device according to claim 1, characterized in that: The flip mechanism (3) comprises an inner rod (301) located outside the placement frame (202), the inner rod (301) being fixed to the inner side of the movable frame (201), a sleeve block (305) being fixedly sleeved on the middle part of the outer side of the inner rod (301), a side of the placement frame (202) away from the support shaft (2017) being fixedly connected to a side shaft (304), an end of the side shaft (304) away from the placement frame (202) being rotatably connected to the sleeve block (305), a bracket (302) being movably sleeved on the outer side of the inner rod (301), a tooth plate (308) being fixedly connected to the bracket (302), an outer side of the side shaft (304) being fixedly mounted with an external gear (303), and the external gear (303) being meshingly connected to the tooth plate (308).

7. The black tea drying device according to claim 6, characterized in that: A cylinder 1 (307) is fixedly installed between the bracket (302) and the movable frame (201), a positioning tube (306) is fixedly sleeved on the outer side of the inner rod (301), and the bracket (302) is in abutment with the positioning tube (306).

8. The black tea drying device according to claim 1, characterized in that: The lifting mechanism (4) comprises a plurality of material conveying pipes (401) fixed at equal angles on the top wall of the drying box (1), the material conveying pipes (401) corresponding to the openings one by one, a lifting pipe (402) being movably sleeved on the outer side of each material conveying pipe (401), and a bottom end of each lifting pipe (402) extending into the placement frame (202).

9. The black tea drying device according to claim 1, characterized in that: A U-shaped round rod (404) is fixedly connected to the inner top wall of the drying box (1); a lifting plate (403) is movably sleeved on the outer side of the U-shaped round rod (404); a second cylinder (405) is fixedly installed between the top of the lifting plate (403) and the drying box (1); and the lifting plate (403) is fixedly sleeved on the outer side of each lifting tube (402).

10. A method for drying black tea, used in the black tea drying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: First, the driving motor (211) is started to drive the barrel (207) to rotate so that the black tea falls into the placement frame (202) intermittently and evenly, and at the same time, the eccentric block (2016) is driven to rotate and impact the movable frame (201), so that the placement frame (202) vibrates, thereby achieving uniform drying of the black tea; Step 2: Then start the second cylinder (405) to drive each lifting tube (402) to rise, so as to avoid the placement frame (202) when it turns over; Step 3: Finally, start the cylinder 1 (307) to drive the placement frame (202) to flip, so that the dried black tea can fall and be collected.

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