Belt dryer for tea processing

Abstract

The invention relates to the technical field of tea processing, in particular to a belt dryer for tea processing, which comprises a drying box, and further comprises a conveying mechanism, an air supply mechanism and a plurality of groups of shifting mechanisms, the air supply mechanism comprises a telescopic assembly, a plurality of air supply boxes, a plurality of drying covers, a plurality of conveying assemblies and a plurality of turbulent flow assemblies, each set of stirring mechanism comprises an air outlet pipe, a rotating assembly, an extrusion assembly, a transmission assembly, a plurality of air outlets and a plurality of stirring teeth, air can be intermittently blown to tea leaves on the steel mesh conveying belt through the air outlet pipes to form an air knife, the tea leaves on the steel mesh conveying belt can be blown through airflow, the blown tea leaves freely fall off after the airflow disappears, and the tea leaves on the steel mesh conveying belt are separated from the tea leaves. And in the falling process, the tea leaves can be picked up and turned over through the stirring teeth rotating on one side, the stirring effect on the tea leaves is achieved, part of the tea leaves can be turned over, meanwhile, the stacked and wound tea leaves can be scattered through airflow, and the drying effect of the tea leaves can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of tea processing, in particular to a belt drying machine for tea processing. Background Art

[0002] In the tea processing process, drying is an indispensable part, which can promote the stability and preservation of tea. The belt dryer mainly uses hot air to evaporate the moisture in the material to achieve the purpose of drying. The belt dryer is also used when drying tea.

[0003] Existing belt dryers usually use chains or steel mesh as conveyor belts, laying the materials flat on the conveyor belt, and hot air flows through the materials to quickly evaporate the moisture in the materials. Although existing belt dryers can achieve the purpose of drying tea leaves, they still have the following shortcomings: 1. Tea leaves tend to get tangled together and are difficult to separate during transportation on the conveyor belt. Consequently, when drying the tea leaves, the tangled tea leaves cannot be separated, leading to uneven drying of the tea leaves. 2. When drying tea leaves on the conveyor belt, the hot air cannot be evenly distributed inside the drying box. Usually, the wind speed on both sides of the conveyor belt is lower than that in the middle of the conveyor belt, which easily leads to poor drying effect of tea leaves at the edge of the conveyor belt. That is, when the tea leaves in the middle of the conveyor belt reach the required moisture content, the tea leaves on both sides still contain higher moisture content. In view of the above problems, a belt drying machine for tea processing is now provided. Summary of the Invention

[0004] The object of the present invention is to provide a belt dryer for tea processing to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A belt dryer for tea processing, comprising a drying box, a conveying mechanism, an air supply mechanism and a plurality of shifting mechanisms; The conveying mechanism includes a steel mesh conveyor belt and a mounting assembly. The steel mesh conveyor belt is located in the middle of the drying box. The air supply mechanism includes a telescopic component, multiple air supply boxes, multiple drying hoods, multiple conveying components and multiple spoiler components. The multiple air supply boxes are equidistantly arranged at the bottom of the inner cavity of the drying box, each air supply box is located below the steel mesh conveyor belt, each drying hood is located above an air supply box, the top of each drying hood is fixedly connected to the drying box, a drying air chamber is formed between each air supply box and a drying hood, each conveying component is installed at the bottom end of a guide plate, and each spoiler component is arranged inside an air supply box; Each set of toggle mechanisms includes an air outlet pipe, a rotating assembly, an extrusion assembly, a transmission assembly, multiple air outlets and multiple teeth. The multiple teeth are arranged above the steel mesh conveyor belt. The rotating assembly is located between the drying box and the multiple teeth. The air outlet pipe is installed on the drying box and inserted in the middle of the steel mesh conveyor belt. The air outlet pipe is located on one side of the multiple teeth. Several air outlets are provided at the top of the air outlet pipe. The extrusion assembly is installed on one side of the drying box. One end of the air outlet pipe passes through the drying box and is connected to one end of the extrusion assembly. The transmission assembly is located between the extrusion assembly and the rotating assembly.

[0006] As a further solution of the present invention: each spoiler assembly includes a swinging component, multiple spoilers and multiple rotating shafts, and the multiple rotating shafts are equidistantly arranged inside the air supply box. Both ends of each rotating shaft are rotatably connected to the two side walls of the air supply box through bearings. The middle part of each spoiler is fixedly mounted on a rotating shaft, and the swinging component is located on one side of the air supply box.

[0007] As a further solution of the present invention: the swinging component includes a movable plate, multiple insertion rods and multiple rocker arms, two guide grooves are fixed on one side of the air supply box, and a guide bar is slidably connected to the inside of each guide groove. The two guide bars are fixedly connected to the movable plate on the side away from the air supply box, and multiple insertion rods are fixed to the surface of the movable plate, one end of each rocker arm is fixed to the end of the rotating shaft away from the spoiler, a strip groove is opened on the surface of each rocker arm, and one end of each insertion rod is inserted into the inner wall of a strip groove.

[0008] As a further solution of the present invention: the telescopic assembly includes a cylinder, a connecting plate, multiple connecting rods and multiple connecting seats, each connecting seat is fixed to one end of a movable plate, each connecting rod is slidably set on the drying box, one end of each connecting rod is fixedly connected to a connecting seat, and the other end of each connecting rod is fixedly connected to the connecting plate. A bracket is fixedly installed on one side of the drying box, the cylinder is installed on the top of the bracket, and the output end of the cylinder is fixedly connected to the connecting plate.

[0009] As a further solution of the present invention: the rotating assembly includes a rotating rod and a motor, both ends of the rotating rod are rotatably set on the drying box through bearings, multiple shifting teeth are fixed on the surface of the rotating rod, the motor is fixedly installed on the outer wall of the drying box, and the output end of the motor is fixedly connected to one end of the rotating rod.

[0010] As a further solution of the present invention: the extrusion assembly includes a storage tank, an air inlet pipe, a push plate and a push rod. The storage tank is fixed on one side of the drying box, one end of the air outlet pipe passes through the drying box and is connected to one end of the storage tank, the air inlet pipe is installed on the top of the storage tank close to the air outlet pipe, and a one-way valve is installed on both the air outlet pipe and the air inlet pipe. The push plate is slidably arranged inside the storage tank, and the push rod is slidably arranged at the end of the storage tank away from the air outlet pipe. One end of the push rod is fixedly connected to the push plate, and a through hole is provided on one side of the push rod, and the through hole is opened at the end of the storage tank.

[0011] As a further solution of the present invention: the transmission assembly includes a hinged rod, a turntable, a driving wheel, a driven wheel and a transmission belt. The driving wheel is fixedly mounted on one end of the rotating rod, the driven wheel is rotatably arranged on the outer wall of the drying box, the transmission belt is sleeved on the outside of the driving wheel and the driven wheel, the turntable is fixed to one side of the driven wheel, one end of the hinged rod is hinged to the end of the push rod away from the push plate, and the other end of the hinged rod is hinged to the surface of the turntable.

[0012] As a further solution of the present invention: each conveying assembly includes a conveying pipe and multiple connecting pipes, the conveying pipe is located at the bottom end of the air supply box, the drying box is provided with a hole for the conveying pipe to pass through, and multiple connecting pipes are equidistantly installed at the top end of the conveying pipe, and the top end of each connecting pipe is connected to the air supply box.

[0013] As a further solution of the present invention: a collecting hood is installed on the top of each drying hood, and the top of each collecting hood is connected to an air outlet pipe. A main pipe is provided above the drying box, and the other end of each air outlet pipe is connected to the main pipe.

[0014] As a further solution of the present invention: a fixed plate is fixed at both ends of the drying box, two mounting plates are symmetrically installed on the top of the two fixed plates, the steel mesh conveyor belt is located between the two mounting plates, and a guide plate is provided under one end of the steel mesh conveyor belt, and the guide plate is installed between the two mounting plates.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. A belt dryer for tea processing of the present invention is provided with a toggle assembly, and uses an air outlet pipe to allow gas to be ejected from multiple air outlets on the air outlet pipe, and intermittently blow air toward the tea leaves on the steel mesh conveyor belt to form an "air knife". The air flow can blow air into the tea leaves on the steel mesh conveyor belt, and the blown-up tea leaves fall freely after the air flow disappears. During the falling process, the toggle teeth rotating on one side can be used to pick up and turn the tea leaves, thereby achieving a toggle effect on the tea leaves, turning the tea leaves from one side to the other, so that some tea leaves can be turned over. At the same time, the air flow can also break up the stacked and entangled tea leaves, which is beneficial to improving the drying effect of the tea leaves and achieving uniform drying of the tea leaves.

[0016] 2. A belt dryer for tea processing according to the present invention provides a spoiler assembly inside each air supply box. When the hot air is transported toward the interior of the drying box through the air supply box, the telescopic assembly can drive multiple spoilers to continuously swing inside the air supply box, thereby guiding the hot air and making the airflow evenly distributed on both sides and the middle position of the steel mesh conveyor belt. This can effectively avoid the wind speed on both sides of the steel mesh conveyor belt being lower than the middle position of the steel mesh conveyor belt, which easily leads to poor tea drying effect at the edge of the steel mesh conveyor belt, and can further improve the tea drying effect.

[0017] 3. A belt dryer for tea processing of the present invention is provided with a transmission assembly, so that the plucking teeth can drive the extrusion assembly to work through the transmission assembly while rotating, so that the air flow can intermittently blow air toward the tea leaves on the steel mesh conveyor belt, that is, the rotation of the plucking teeth and the air jet from the air outlet can form a linkage effect. On the one hand, the number of driving sources used in the dryer can be reduced, reducing power consumption and cost. On the other hand, the cooperation of the hinged rod and the air inlet pipe can effectively improve the breaking and turning effect of the tea leaves, thereby improving the uniform drying effect of the tea leaves.

[0018] 4. The belt dryer for tea processing of the present invention is provided with a plurality of air supply boxes and a drying hood at the top of each guide plate. A drying air chamber can be formed between each drying hood and an air supply box. The interior of the drying box is divided into a plurality of drying air chambers, and each drying air chamber is provided with a separate air supply device. The temperature inside the plurality of drying air chambers is increased successively. When the tea leaves pass through the plurality of drying air chambers successively, the tea leaves are gradually dried, which can gradually shrink the fiber tissue of the tea leaves and maintain a complete shape. At the same time, it can also avoid the disadvantages of hardening of the tea leaves caused by direct high-temperature drying and difficulty in evaporation of internal moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0020] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0021] Figure 3 It is a side view of the present invention.

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention.

[0023] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of part A.

[0024] Figure 6 For the present invention Figure 4 Schematic diagram of the floor plan.

[0025] Figure 7 It is a structural schematic diagram of the shifting gear in the present invention.

[0026] Figure 8 It is a schematic diagram of the cross-sectional structure of the storage tank in the present invention.

[0027] Figure 9 It is a structural schematic diagram of the air supply box in the present invention.

[0028] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure of part B.

[0029] Figure 11 Schematic diagram of the structure of the spoiler in the present invention.

[0030] Among them: 11. Drying box; 12. Fixed plate; 13. Mounting plate; 14. Steel mesh conveyor belt; 15. Guide plate; 16. Drying hood; 17. Air outlet pipe; 18. Main pipe; 19. Collection hood; 20. Conveyor pipe; 21. Connecting pipe; 22. Spoiler; 23. Rotating shaft; 24. Rocker; 25. Strip groove; 26. Insert rod; 27. Guide groove; 28. Guide strip; 29. ​​Moving plate; 30. Connecting Seat; 31. Connecting rod; 32. Connecting plate; 33. Bracket; 34. Cylinder; 35. Turning rod; 36. Shifting gear; 37. Articulated rod; 38. Exhaust pipe; 39. Exhaust port; 40. Storage tank; 41. Inlet pipe; 42. Push plate; 43. Push rod; 44. Turntable; 45. Driving wheel; 46. Driven wheel; 47. Transmission belt; 48. Motor; 49. Through hole; 50. Support rod; 51. Air box. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] The present invention provides the following preferred embodiments: Example 1, as Figures 1-11 As shown, a belt dryer for tea processing includes a drying box 11, a conveying mechanism, an air supply mechanism and multiple groups of toggle mechanisms; The conveying mechanism includes a steel mesh conveyor belt 14 and a mounting assembly. The steel mesh conveyor belt 14 is located in the middle of the drying box 11. The mounting assembly is located between the drying box 11 and the steel mesh conveyor belt 14. The mounting assembly is used to install the steel mesh conveyor belt 14. The mounting assembly is used to install the steel mesh conveyor belt 14 so that the steel mesh conveyor belt 14 can be driven inside the drying box 11, thereby moving the tea leaves. The tea leaves can move inside the drying box 11 and dry the tea leaves during the movement. The air supply mechanism includes a telescopic component, multiple air supply boxes 51, multiple drying covers 16, multiple conveying components and multiple spoiler components. The multiple air supply boxes 51 are equidistantly arranged at the bottom of the inner cavity of the drying box 11, and each air supply box 51 is located below the steel mesh conveyor belt 14. Specifically, a plurality of support rods 50 are fixed to the surface of each air supply box 51, and the bottom end of each support rod 50 is fixedly connected to the drying box 11. The support rods 50 can be used to support and install the air supply boxes 51. Each drying cover 16 is located above an air supply box 51, and the top end of each drying cover 16 is fixedly connected to the drying box 11. A drying air chamber is formed between each air supply box 51 and a drying cover 16. Each conveying assembly is mounted at the bottom end of a guide plate 15, and the conveying assembly can be used to convey the hot air to the inside of the air supply box 51, and the hot air can be output to the inside of the drying air chamber through the air supply box 51, so as to dry the tea leaves on the steel mesh conveyor belt 14. Each spoiler assembly is arranged inside an air supply box 51, and the spoiler assembly is used to guide the hot air flowing out of the air supply box 51 so that the air flow can be evenly distributed on both sides and the middle position of the steel mesh conveyor belt 14, which can effectively prevent the wind speed on both sides of the steel mesh conveyor belt 14 from being lower than the middle position of the steel mesh conveyor belt 14, which easily leads to poor drying effect of the tea leaves at the edge of the steel mesh conveyor belt 14, thereby further improving the tea drying effect. It should be noted that when tea leaves need to be dried, each conveying assembly needs to be connected to an external air supply mechanism, and the external air supply mechanism is used to deliver hot air of different temperatures through multiple conveying assemblies to the interior of multiple air supply boxes 51; A drying air chamber is formed between each drying cover 16 and an air supply box 51, thereby dividing the interior of the drying box 11 into multiple drying air chambers. When in use, the temperature inside the multiple drying air chambers increases successively, that is, the temperature of the hot air delivered by the multiple air supply mechanisms increases successively. When the tea leaves pass through the multiple drying air chambers in sequence, the tea leaves are gradually dried, which can gradually shrink the tea leaves' fiber structure and maintain their intact shape. At the same time, it can also avoid the disadvantages of hardening the tea leaves due to direct high-temperature drying, which makes it difficult for the internal moisture to evaporate. Each set of toggle mechanisms is located between two adjacent drying covers 16, and each set of toggle mechanisms includes an air outlet pipe 38, a rotating assembly, an extrusion assembly, a transmission assembly, a plurality of air outlets 39 and a plurality of shifting teeth 36. The plurality of shifting teeth 36 are all arranged above the steel mesh conveyor belt 14, and the rotating assembly is located between the drying box 11 and the plurality of shifting teeth 36. The rotating assembly is used to drive the shifting teeth 36 to rotate. The air outlet pipe 38 is installed on the drying box 11 and inserted in the middle of the steel mesh conveyor belt 14. The air outlet pipe 38 is located on one side of the plurality of shifting teeth 36. The top of the air outlet pipe 38 is provided with a plurality of air outlets 39. The extrusion assembly is installed on one side of the drying box 11. One end of the air outlet pipe 38 passes through the drying box 11 and is connected to one end of the extrusion assembly. The extrusion assembly can transport gas to the inside of the air outlet pipe 38, and the transmission assembly is located between the extrusion assembly and the rotating assembly. When the air outlet pipe 38 rotates under the action of the rotating component, the extrusion component can be driven to work through the transmission component, so that gas is ejected from the multiple air outlets 39 on the air outlet pipe 38, and intermittently blows air toward the tea leaves on the steel mesh conveyor belt 14, forming an "air knife". The airflow can blow the tea leaves on the steel mesh conveyor belt 14, and the blown-up tea leaves fall freely after the airflow disappears. In the process of falling, the tea leaves can be picked up and turned by the rotating teeth 36 on one side, achieving a turning effect on the tea leaves, turning the tea leaves from one side to the other side, so that some tea leaves can be turned over. At the same time, the airflow can also break up the stacked and entangled tea leaves, which is beneficial to improve the drying effect of the tea leaves and achieve uniform drying of the tea leaves.

[0033] like Figures 1-11 As shown, each spoiler assembly includes a swing component, a plurality of spoilers 22 and a plurality of rotating shafts 23. The plurality of rotating shafts 23 are equidistantly arranged inside the air supply box 51. Both ends of each rotating shaft 23 are rotatably connected to the two side walls of the air supply box 51 through bearings. The middle portion of each spoiler 22 is fixedly mounted on a rotating shaft 23. The swing component is located on one side of the air supply box 51. When the hot air enters the interior of the guide plate 15, the swing assembly can drive multiple rotating shafts 23 to swing, and the swinging of the rotating shaft 23 can drive the spoiler 22 to swing synchronously. When the top of the spoiler 22 swings toward the two sides of the air supply box 51, the hot air can be guided to the two sides of the steel mesh conveyor belt 14, thereby guiding the hot air inside the air supply box 51, so that the airflow can be evenly distributed on both sides and the middle position of the steel mesh conveyor belt 14, which can effectively avoid the wind speed on both sides of the steel mesh conveyor belt 14 being lower than the middle position of the steel mesh conveyor belt 14, which may easily lead to poor tea drying effect at the edge of the steel mesh conveyor belt 14, and can further improve the tea drying effect.

[0034] like Figures 1-11As shown, the swing component includes a movable plate 29, a plurality of insertion rods 26 and a plurality of rocker arms 24. Two guide grooves 27 are fixed on one side of the air supply box 51. A guide bar 28 is slidably connected to the inside of each guide groove 27. The two guide bars 28 are fixedly connected to the movable plate 29 on the side away from the air supply box 51. The sliding connection between the guide bars 28 and the guide grooves 27 can be used to guide and support the movable plate 29, so that the movable plate 29 can move along the length direction of the guide grooves 27 on one side of the air supply box 51. The plurality of insertion rods 26 are fixed to the surface of the movable plate 29, and one end of each rocker arm 24 is fixed to the end of the rotating shaft 23 away from the spoiler 22. A strip groove 25 is opened on the surface of each rocker arm 24, and one end of each insertion rod 26 is inserted into the inner wall of a strip groove 25. When the movable plate 29 moves back and forth on one side of the air supply box 51, it can drive multiple insertion rods 26 to move synchronously. When the insertion rod 26 moves, it can drive the rocker arm 24 to swing along the axis of the rotating shaft 23, so that the rocker arm 24, the rotating shaft 23 and the spoiler 22 can swing synchronously. When the spoiler 22 swings, the airflow can be guided.

[0035] like Figures 1-11 As shown, the telescopic assembly includes a cylinder 34, a connecting plate 32, a plurality of connecting rods 31 and a plurality of connecting seats 30, each connecting seat 30 is fixed to one end of a movable plate 29, each connecting rod 31 is slidably arranged on the drying box 11, one end of each connecting rod 31 is fixedly connected to a connecting seat 30, and the other end of each connecting rod 31 is fixedly connected to the connecting plate 32. A bracket 33 is fixedly installed on one side of the drying box 11, and the cylinder 34 is mounted on the top of the bracket 33. The output end of the cylinder 34 is fixedly connected to the connecting plate 32; When it is necessary to guide the hot air, the controller controls the cylinder 34 to work, and the cylinder 34 can drive the connecting plate 32 to move, so that multiple connecting rods 31 can slide on the drying box 11. When the connecting rod 31 moves, it can drive the movable plate 29 to move through the connecting seat 30, so that the movable plate 29 can slide on one side of the air supply box 51, thereby realizing the subsequent swing of the spoiler 22.

[0036] like Figures 1-11 As shown, the rotating assembly includes a rotating rod 35 and a motor 48. Both ends of the rotating rod 35 are rotatably mounted on the drying box 11 through bearings. A plurality of shifting teeth 36 are fixed to the surface of the rotating rod 35. The motor 48 is fixedly mounted on the outer wall of the drying box 11. The output end of the motor 48 is fixedly connected to one end of the rotating rod 35. When the shifting teeth 36 need to be rotated, the controller controls the motor 48 to work, and the motor 48 can drive the rotating rod 35 to rotate on the drying box 11. When the rotating rod 35 rotates, it can drive the plurality of shifting teeth 36 to rotate.

[0037] like Figures 1-11The exhaust pipe 38 is connected to the exhaust pipe 38 at one end thereof and the exhaust pipe 38 is connected to the exhaust pipe 38 at the other end thereof. When the transmission assembly is working, it can drive the push rod 43 to move back and forth on the storage tank 40, and the push rod 43 can drive the push plate 42 to move inside the storage tank 40. When the push plate 42 moves toward the direction close to the push rod 43, under the action of negative pressure, part of the hot air in the air supply mechanism can enter the interior of the storage tank 40 through the air inlet pipe 41 for storage. When the push plate 42 moves in the opposite direction, the hot air inside the storage tank 40 can enter the interior of the air outlet pipe 38 and be blown out through the air outlet 39, intermittently blowing air towards the tea leaves on the steel mesh conveyor belt 14, forming an "air knife", and the airflow can make the tea leaves on the steel mesh conveyor belt 14 be blown.

[0038] like Figures 1-11 As shown, the transmission assembly includes a hinged rod 37, a turntable 44, a driving wheel 45, a driven wheel 46 and a transmission belt 47. The driving wheel 45 is fixedly mounted on one end of the rotating rod 35, and the driven wheel 46 is rotatably arranged on the outer wall of the drying box 11. The transmission belt 47 is sleeved on the outer sides of the driving wheel 45 and the driven wheel 46. The turntable 44 is fixed to one side of the driven wheel 46. One end of the hinged rod 37 is hinged to the end of the push rod 43 away from the push plate 42, and the other end of the hinged rod 37 is hinged to the surface of the turntable 44. When the rotating rod 35 rotates, it drives the driving wheel 45 to rotate. Under the action of the transmission belt 47, the driving wheel 45 rotates and drives the driven wheel 46 to rotate, thereby driving the rotating disk 44 to rotate. When the rotating disk 44 rotates, it drives the push rod 43 to slide back and forth inside the storage tank 40 under the action of the hinged rod 37. That is, when the shifting teeth 36 rotate, they can drive the extrusion assembly to work through the transmission assembly, so that the air flow can intermittently blow air toward the tea leaves on the steel mesh conveyor belt 14. That is, the rotation of the shifting teeth 36 and the air jet from the air outlet 39 can form a linkage effect. On the one hand, it can reduce the number of driving sources used in the dryer, reduce power consumption and cost, and on the other hand, by utilizing the cooperation of the hinged rod 37 and the air inlet pipe 41, it can effectively improve the breaking and turning effect of the tea leaves, thereby improving the uniform drying effect of the tea leaves.

[0039] like Figures 1-11 As shown, each conveying assembly includes a conveying pipe 20 and multiple connecting pipes 21. The conveying pipe 20 is located at the bottom end of the air supply box 51. The drying box 11 is provided with a hole for the conveying pipe 20 to pass through. Multiple connecting pipes 21 are equidistantly installed at the top end of the conveying pipe 20. The top end of each connecting pipe 21 is connected to the air supply box 51. One end of the conveying pipe 20 is connected to an external air supply mechanism. The hot air can be conveyed to the conveying pipe 20 through the air supply mechanism, and then the hot air can be conveyed to the air supply box 51 through multiple connecting pipes 21 to facilitate subsequent drying work.

[0040] like Figures 1-11 As shown, a collecting hood 19 is installed on the top of each drying hood 16, and an air outlet pipe 17 is connected to the top of each collecting hood 19. A main pipe 18 is provided above the drying box 11, and the other end of each air outlet pipe 17 is connected to the main pipe 18. The gas inside the drying box 11 can be discharged through the air outlet pipe 17, the main pipe 18, the collecting hood 19, etc. Specifically, in actual use, the main pipe 18 should be connected to a gas purification device to purify the discharged gas.

[0041] like Figures 1-11 As shown, a fixed plate 12 is fixed at both ends of the drying box 11, and two mounting plates 13 are symmetrically installed on the top of the two fixed plates 12. The steel mesh conveyor belt 14 is located between the two mounting plates 13. Specifically, a driving mechanism for driving the steel mesh conveyor belt 14 is provided between the two mounting plates 13. The method of driving the steel mesh conveyor belt 14 is the existing technology and will not be elaborated here. Specifically, a hole for the air outlet pipe 38 to pass through is provided on the two mounting plates 13. A guide plate 15 is provided below one end of the steel mesh conveyor belt 14. The guide plate 15 is installed between the two mounting plates 13. The guide plate 15 is used to play a guiding role.

[0042] The specific working process of the present invention is as follows: First, the tea leaves to be dried are placed at one end of a steel mesh conveyor belt 14, and one end of a plurality of conveying pipes 20 is connected to a plurality of external air supply mechanisms. The air supply mechanisms can deliver hot air to the conveying pipes 20, and the external air supply mechanisms use the hot air of different temperatures to be delivered to the interior of a plurality of air supply boxes 51 through a plurality of conveying assemblies. When the steel mesh conveyor belt 14 drives the tea leaves, the tea leaves pass through the plurality of hot air supply chambers in sequence, so that the tea leaves are gradually dried. During this process, the controller controls the cylinder 34 to work, and the cylinder 34 can drive the connecting plate 32 to move, so that the multiple connecting rods 31 can slide on the drying box 11. When the connecting rod 31 moves, it can drive the movable plate 29 to move through the connecting seat 30, so that the movable plate 29 can slide on one side of the air supply box 51. When the movable plate 29 moves back and forth on one side of the air supply box 51, it can drive the multiple insertion rods 26 to move synchronously. When the insertion rod 26 moves, it can drive the swing rod 24 to swing along the axis of the rotating shaft 23, so that the swing rod 24 and the rotating shaft 23 are in a state of rotation. The spoiler 22 can swing synchronously with the spoiler 22. When the top of the spoiler 22 swings toward the two sides of the air supply box 51, the hot air can be guided to the two sides of the steel mesh conveyor belt 14, thereby guiding the hot air inside the air supply box 51, so that the air flow can be evenly distributed on both sides and the middle position of the steel mesh conveyor belt 14, which can effectively prevent the wind speed on both sides of the steel mesh conveyor belt 14 from being lower than that in the middle position of the steel mesh conveyor belt 14, which easily leads to poor tea drying effect at the edge of the steel mesh conveyor belt 14, and can further improve the tea drying effect. At the same time, the controller controls the motor 48 to work, and the motor 48 can drive the rotating rod 35 to rotate on the drying box 11. When the rotating rod 35 rotates, it can drive multiple shifting teeth 36 to rotate. When the rotating rod 35 rotates, it can drive the driving wheel 45 to rotate. Under the action of the transmission belt 47, when the driving wheel 45 rotates, it can drive the driven wheel 46 to rotate, thereby driving the turntable 44 to rotate. When the turntable 44 rotates, it can drive the push rod 43 to slide back and forth inside the storage tank 40 under the action of the hinged rod 37. The push rod 43 can drive the push plate 42 to move inside the storage tank 40. When the push plate 42 moves toward the direction close to the push rod 43, under the action of negative pressure, part of the hot air in the air supply mechanism can enter the storage tank 4 through the air inlet pipe 41. 0 internal in and out storage, when the push plate 42 moves in the opposite direction, the hot air inside the storage tank 40 can enter the inside of the air outlet pipe 38, and be blown out through the air outlet 39, and intermittently blow air towards the tea leaves on the steel mesh conveyor belt 14, forming an "air knife". The airflow can make the tea leaves on the steel mesh conveyor belt 14 be blown by the air. The blown tea leaves fall freely after the airflow disappears. In the process of falling, the tea leaves can be picked up and turned by the rotating teeth 36 on one side, so as to achieve the effect of turning the tea leaves, turning the tea leaves from one side to the other side, so that some tea leaves can be turned over. At the same time, the airflow can also break up the stacked and entangled tea leaves, which is beneficial to improving the drying effect of the tea leaves and achieving uniform drying of the tea leaves. That is, when the shifting teeth 36 rotate, they can drive the extrusion assembly to work through the transmission assembly, so that the air flow can intermittently blow air toward the tea leaves on the steel mesh conveyor belt 14. That is, the rotation of the shifting teeth 36 and the air jet from the air outlet 39 can form a linkage effect. On the one hand, it can reduce the number of driving sources used in the dryer, reduce power consumption and cost, and on the other hand, by utilizing the cooperation of the hinged rod 37 and the air inlet pipe 41, it can effectively improve the breaking and turning effect of the tea leaves, thereby improving the uniform drying effect of the tea leaves.

[0043] The beneficial effects of the present invention are specifically embodied in that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A belt dryer for tea processing, comprising a drying box (11), characterized in that: It also includes a conveying mechanism, an air supply mechanism and multiple sets of toggle mechanisms; The conveying mechanism includes a steel mesh conveyor belt (14) and a mounting assembly, wherein the steel mesh conveyor belt (14) is located in the middle of the drying box (11); The air supply mechanism includes a telescopic component, a plurality of air supply boxes (51), a plurality of drying covers (16), a plurality of conveying components and a plurality of spoiler components, wherein the plurality of air supply boxes (51) are equidistantly arranged at the bottom of the inner cavity of the drying box (11), each air supply box (51) is located below the steel mesh conveyor belt (14), each drying cover (16) is located above an air supply box (51), the top end of each drying cover (16) is fixedly connected to the drying box (11), a drying air chamber is formed between each air supply box (51) and a drying cover (16), each conveying component is installed at the bottom end of a guide plate (15), and each spoiler component is arranged inside an air supply box (51); Each group of toggle mechanisms includes an air outlet pipe (38), a rotating assembly, an extrusion assembly, a transmission assembly, a plurality of air outlets (39) and a plurality of shifting teeth (36), the plurality of shifting teeth (36) are all arranged above the steel mesh conveyor belt (14), the rotating assembly is located between the drying box (11) and the plurality of shifting teeth (36), the air outlet pipe (38) is installed on the drying box (11) and inserted in the middle of the steel mesh conveyor belt (14), the air outlet pipe (38) is located on one side of the plurality of shifting teeth (36), and a plurality of air outlets (39) are provided at the top of the air outlet pipe (38), the extrusion assembly is installed on one side of the drying box (11), one end of the air outlet pipe (38) passes through the drying box (11) and is connected to one end of the extrusion assembly, and the transmission assembly is located between the extrusion assembly and the rotating assembly.

2. A belt dryer for tea processing according to claim 1, characterized in that: Each spoiler assembly comprises a swinging component, a plurality of spoilers (22) and a plurality of rotating shafts (23). The plurality of rotating shafts (23) are equidistantly arranged inside the air supply box (51). Both ends of each rotating shaft (23) are rotatably connected to the two side walls of the air supply box (51) through bearings. The middle portion of each spoiler (22) is fixedly mounted on a rotating shaft (23). The swinging component is located on one side of the air supply box (51).

3. A belt dryer for tea processing according to claim 2, characterized in that: The swing component includes a movable plate (29), a plurality of insertion rods (26) and a plurality of swing rods (24). Two guide grooves (27) are fixed on one side of the air supply box (51). A guide bar (28) is slidably connected to the inside of each guide groove (27). The two guide bars (28) are fixedly connected to the movable plate (29) on the side away from the air supply box (51). The plurality of insertion rods (26) are fixed to the surface of the movable plate (29). One end of each swing rod (24) is fixed to the end of the rotating shaft (23) away from the spoiler (22). A strip groove (25) is opened on the surface of each swing rod (24), and one end of each insertion rod (26) is plugged into the inner wall of a strip groove (25).

4. A belt dryer for tea processing according to claim 3, characterized in that: The telescopic assembly includes a cylinder (34), a connecting plate (32), a plurality of connecting rods (31) and a plurality of connecting seats (30), each connecting seat (30) is fixed to one end of a movable plate (29), each connecting rod (31) is slidably arranged on the drying box (11), one end of each connecting rod (31) is fixedly connected to a connecting seat (30), and the other end of each connecting rod (31) is fixedly connected to the connecting plate (32), a bracket (33) is fixedly installed on one side of the drying box (11), the cylinder (34) is installed on the top end of the bracket (33), and the output end of the cylinder (34) is fixedly connected to the connecting plate (32).

5. A belt dryer for tea processing according to claim 4, characterized in that: The rotating assembly includes a rotating rod (35) and a motor (48), both ends of the rotating rod (35) are rotatably arranged on the drying box (11) through bearings, a plurality of shifting teeth (36) are fixed to the surface of the rotating rod (35), the motor (48) is fixedly installed on the outer wall of the drying box (11), and the output end of the motor (48) is fixedly connected to one end of the rotating rod (35).

6. A belt dryer for tea processing according to claim 5, characterized in that: The extrusion assembly includes a storage tank (40), an air inlet pipe (41), a push plate (42) and a push rod (43). The storage tank (40) is fixed to one side of the drying box (11). One end of the air outlet pipe (38) passes through the drying box (11) and is communicated with one end of the storage tank (40). The air inlet pipe (41) is installed on the top of one end of the storage tank (40) close to the air outlet pipe (38). Both the air outlet pipe (38) and the air inlet pipe (41) are equipped with a one-way valve. The push plate (42) is slidably arranged inside the storage tank (40). The push rod (43) is slidably arranged at one end of the storage tank (40) away from the air outlet pipe (38). One end of the push rod (43) is fixedly connected to the push plate (42). A through hole (49) is provided on one side of the push rod (43). The through hole (49) is opened at the end of the storage tank (40).

7. A belt dryer for tea processing according to claim 6, characterized in that: The transmission assembly includes a hinged rod (37), a turntable (44), a driving wheel (45), a driven wheel (46) and a transmission belt (47), wherein the driving wheel (45) is fixedly mounted on one end of the rotating rod (35), the driven wheel (46) is rotatably mounted on the outer wall of the drying box (11), the transmission belt (47) is sleeved on the outer sides of the driving wheel (45) and the driven wheel (46), the turntable (44) is fixed to one side of the driven wheel (46), one end of the hinged rod (37) is hinged to one end of the push rod (43) away from the push plate (42), and the other end of the hinged rod (37) is hinged to the surface of the turntable (44).

8. A belt dryer for tea processing according to claim 7, characterized in that: Each conveying assembly comprises a conveying pipe (20) and a plurality of connecting pipes (21); the conveying pipe (20) is located at the bottom end of the air supply box (51); a hole for the conveying pipe (20) to pass through is provided on the drying box (11); the plurality of connecting pipes (21) are equidistantly installed at the top end of the conveying pipe (20); and the top end of each connecting pipe (21) is connected to the air supply box (51).

9. A belt dryer for tea processing according to claim 8, characterized in that: A collecting hood (19) is installed at the top of each drying hood (16), and an air outlet pipe (17) is connected to the top of each collecting hood (19). A main pipe (18) is provided above the drying box (11), and the other end of each air outlet pipe (17) is connected to the main pipe (18).

10. A belt dryer for tea processing according to claim 9, characterized in that: A fixing plate (12) is fixed at each end of the drying box (11), two mounting plates (13) are symmetrically mounted on the tops of the two fixing plates (12), a steel mesh conveyor belt (14) is located between the two mounting plates (13), a guide plate (15) is provided below one end of the steel mesh conveyor belt (14), and the guide plate (15) is mounted between the two mounting plates (13).

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