Tea drying device with screening function

Abstract

The tea drying device with the screening function comprises an obliquely-installed box body, an internal drying pipe is fixedly connected to the interior of the box body, the air inlet end of the internal drying pipe is fixedly connected with a first warm air blower, the internal drying pipe and one end of the box body are rotationally connected with a drying filter cylinder, and the other end of the box body is fixedly connected with a second warm air blower. A plurality of grading filter plates are fixedly connected to the interior of the drying filter cylinder, a plurality of back-flushing pipes are arranged above the internal drying pipe, a plurality of back-flushing shovel plates are slidably connected to the lower portion of the internal drying pipe, a rotary driving assembly is fixedly connected to the interior of the box body, and the rotary driving assembly comprises a driving gear ring, a synchronizing shaft, a driving gear and a rotating motor; under the synergistic effect of the internal drying pipe and the air holes of the back-flushing shovel plate, hot air flow is vertically sprayed out from the air holes of the shovel plate while the tea leaves are mechanically turned and stirred, so that penetrability drying is formed; the backflushing pipe reversely jets airflow to clean the grading filter plate, sieve pores are kept unobstructed, it is ensured that hot air evenly penetrates through the tea leaf layer, and local over-wet or over-dry is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and in particular to a tea drying device with a sieving function. Background Technology

[0002] In tea processing, drying is a crucial step that determines the quality of the finished product, far exceeding the effects of simple dehydration. Firstly, moisture control is fundamental for the long-term preservation of tea. Fresh leaves contain as much as 75%-80% moisture when picked; if not dried promptly, they are prone to microbial growth and mold. However, the key value of drying lies in the chemical restructuring of the tea's internal components triggered by heat. In a high-temperature environment, the enzymatic oxidation of tea polyphenols is effectively terminated, and the originally astringent catechins are transformed into flavor compounds such as theaflavins and thearubigins, laying the foundation for the richness and fullness of the tea liquor. However, the tea leaves shrink in size after drying, necessitating grading based on size for easier subsequent sales.

[0003] A search revealed Chinese patent publication number CN212087910U, which discloses a tea drying device with a sieving function. The device includes a drying chamber, a first leg, a second leg, a flame furnace, an air inlet pipe, a first sieving plate, a second sieving plate, and an induced draft fan. The drying chamber is rectangular and tilted at 10°. The first and second legs are connected to the bottom of the drying chamber, with the height of the first leg greater than the height of the second leg.

[0004] To address the problems of the aforementioned technologies, which only allow drying from bottom to top, leading to uneven drying and clogging of the filter plates over time, thus hindering effective sieving, a tea drying device with sieving function is proposed. Utility Model Content

[0005] In view of this, the present invention aims to provide a tea drying device with a sieving function to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0006] The technical solution of this utility model embodiment is implemented as follows: it includes a box body installed at an incline, an internal drying pipe is fixedly connected inside the box body, a heater is fixedly connected to the air inlet end of the internal drying pipe, a drying filter cylinder is rotatably connected to one end of the internal drying pipe and the box body, multiple graded filter plates are fixedly connected inside the drying filter cylinder, multiple backflushing pipes are provided above the internal drying pipe, multiple backflushing shovels are slidably connected below the internal drying pipe, and a rotation drive assembly is fixedly connected inside the box body.

[0007] In some embodiments, the rotary drive assembly includes a drive gear ring, a synchronous shaft, a drive gear, and a rotary motor. One side of the rotary motor is fixedly connected to the outside of the housing, both ends of the synchronous shaft are rotatably connected to the inside of the housing, and the other end of the synchronous shaft is fixedly connected to the power output end of the rotary motor. Two drive gear rings are fixedly connected to both sides of the drying filter cartridge, and two drive gears are fixedly connected to both ends of the synchronous shaft. The drive gear ring and drive gear on the same side mesh with each other.

[0008] In some embodiments, a lower warm air nozzle is fixedly connected to the bottom of the housing, and the air inlet end of the lower warm air nozzle is fixedly connected to the second air outlet end of the heater.

[0009] In some embodiments, a top baffle is fixedly connected above the drying filter cartridge, an inlet is opened on one side of the box and the top baffle, and an outlet is opened at the bottom of the box. Cover plates are rotatably connected inside the inlet and the outlet respectively.

[0010] In some embodiments, an exhaust pipe is fixedly connected to the top of the housing, and a cyclone dust collector is fixedly connected to one end of the exhaust pipe.

[0011] In some embodiments, a vibrating plate is fixedly connected to one end of one of the plurality of backflush blades.

[0012] In some embodiments, a swing motor is fixedly connected below the internal drying tube, and a cam is fixedly connected to the power output end of the swing motor, with one side of the cam movably connected to the vibrating plate.

[0013] In some embodiments, a limiting baffle is fixedly connected to one side of the internal drying tube, and a reset spring is fixedly connected to one end of the limiting baffle and the vibrating plate.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] 1. A tea drying device with sieving function, which, through the coordinated action of the internal drying pipe and the air holes of the backflushing shovel, sprays hot air vertically from the air holes of the shovel while mechanically turning the tea, forming penetrating drying; the backflushing pipe sprays air in the opposite direction to clean the grading filter plate, maintain the unobstructed sieve holes, and ensure that the hot air penetrates the tea layer evenly, reducing local over-wetness or over-dryness.

[0016] 2. A tea drying device with sieving function, which drives the drying filter cylinder to rotate by a rotary motor, causing the tea inside to tumble. With the help of multi-level grading filter plates with increasing mesh size, the size of the tea is simultaneously sieved during the drying process, avoiding the efficiency loss of drying and sieving in the traditional process, and directly improving the continuity of processing.

[0017] 3. A tea drying device with screening function, which uses a swing motor to drive a cam to periodically squeeze a vibrating plate, causing the backwash shovel to swing back and forth under the action of a return spring, increasing the tea turning amplitude, breaking up accumulated clumps, and is especially suitable for deep drying of high-humidity tea, reducing the frequency of manual intervention.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the main view of the present invention.

[0021] Figure 2 This is a structural diagram of the internal structure of the box body of this utility model;

[0022] Figure 3 This is a structural diagram of the internal structure of the filter cartridge of this utility model;

[0023] Figure 4 This is a diagram of the cam mounting structure of this utility model;

[0024] Figure 5 This is a diagram showing the installation structure of the reset spring of this utility model.

[0025] Figure label:

[0026] 1. Housing; 2. Feed inlet; 3. Internal drying pipe; 4. Heater 1; 5. Discharge outlet; 6. Rotary motor; 7. Heater 2; 8. Lower heat spray nozzle; 9. Exhaust pipe; 10. Drying filter cartridge; 11. Drive gear ring; 12. Synchronous shaft; 13. Drive gear; 14. Swing motor; 15. Grading filter plate; 16. Backflush pipe; 17. Backflush shovel; 18. Top baffle; 19. Vibrating plate; 20. Cam; 21. Limit baffle; 22. Return spring; 23. Cyclone dust collector. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] Example 1:

[0030] like Figure 1-5 As shown, a tea drying device with sieving function includes an inclined housing 1. An internal drying pipe 3 is fixedly connected inside the housing 1. A heater 4 is fixedly connected to the air inlet end of the internal drying pipe 3. A drying filter cylinder 10 is rotatably connected to one end of the internal drying pipe 3 and the housing 1. The installation angle of the internal drying pipe 3 and the drying filter cylinder 10 is the same as that of the inclined sterilization of the housing 1. Multiple grading filter plates 15 are fixedly connected inside the drying filter cylinder 10. The mesh count of the multiple grading filter plates 15 gradually increases from high to low, which can sieve tea leaves of different sizes. The number of grading filter plates 15 can be changed according to needs. Multiple backflushing pipes 16 are provided above the internal drying pipe 3, and multiple backflushing shovels 17 are slidably connected below the internal drying pipe 3. A rotary drive assembly is fixedly connected inside the housing 1.

[0031] The rotary drive assembly includes a drive gear ring 11, a synchronous shaft 12, a drive gear 13, and a rotary motor 6. One side of the rotary motor 6 is fixedly connected to the outside of the housing 1, both ends of the synchronous shaft 12 are rotatably connected to the inside of the housing 1, and the other end of the synchronous shaft 12 is fixedly connected to the power output end of the rotary motor 6. Two drive gear rings 11 are fixedly connected to both sides of the drying filter cartridge 10, and two drive gears 13 are fixedly connected to both ends of the synchronous shaft 12. The drive gear ring 11 and the drive gear 13 on the same side mesh with each other.

[0032] When in use, put the raw tea leaves into the top of the drying filter cylinder 10 from above, and then start the drying process. At this time, the rotary motor 6 starts and can drive the drying filter cylinder 10 to rotate through multiple drive gears 13 and drive gear ring 11 for drying. The drying filter cylinder 10 has multiple openings around it, which allow airflow to pass through and carry away the debris and dust in the tea leaves.

[0033] During the rotation of the tea leaves by the drying filter cylinder 10, the tea leaves can hit the backwash plates 17 below. These backwash plates 17 can stir the tea leaves on the one hand, and on the other hand, hot air can be blown out from the air holes on one side of the backwash plates 17 through the internal drying pipe 3. This can further improve the drying effect and make the drying more uniform.

[0034] Meanwhile, the backwash pipe 16, which is attached to the rear side of the classifying filter plate 15, can backwash the gas from the other side to clean the classifying filter plate 15, keeping the openings of the classifying filter plate 15 unobstructed.

[0035] In this embodiment, a lower warm air nozzle 8 is fixedly connected to the bottom of the box 1. The air inlet of the lower warm air nozzle 8 is fixedly connected to the air outlet of the second heater 7. The second heater 7 can blow hot air upward through the lower warm air nozzle 8 to evenly dry the tea leaves.

[0036] In this embodiment, a top baffle 18 is fixedly connected above the drying filter cylinder 10. A feed inlet 2 is opened on one side of the box body 1 and the top baffle 18, and a discharge outlet 5 is opened below the box body 1. Cover plates are rotatably connected inside the feed inlet 2 and the discharge outlet 5. Multiple rotatable baffles are also rotatably connected below the drying filter cylinder 10. After drying, the baffles below the drying filter cylinder 10 can be opened one by one to take out tea of ​​different grades.

[0037] In this embodiment, an exhaust pipe 9 is fixedly connected to the top of the housing 1, and a cyclone dust collector 23 is fixedly connected to one end of the exhaust pipe 9. The hot air during drying is discharged from the top and the dust is separated by the cyclone dust collector 23 to prevent pollution of the working environment.

[0038] In this embodiment: When in use, the raw tea leaves are put into the top of the drying filter cylinder 10 from above, and then the drying is started. At this time, the rotary motor 6 is started, and the drying filter cylinder 10 can be rotated through multiple drive gears 13 and drive gear ring 11 to dry. The drying filter cylinder 10 has multiple openings around it, which allow airflow to pass through and carry away the debris and dust in the tea leaves.

[0039] During the rotation of the tea leaves by the drying filter cylinder 10, the tea leaves can hit the backwash plates 17 below. These backwash plates 17 can stir the tea leaves on the one hand, and on the other hand, hot air can be blown out from the air holes on one side of the backwash plates 17 through the internal drying pipe 3. This can further improve the drying effect and make the drying more uniform.

[0040] Meanwhile, the backwash pipe 16, which is attached to the rear side of the classifying filter plate 15, can backwash the gas from the other side to clean the classifying filter plate 15, keeping the openings of the classifying filter plate 15 unobstructed.

[0041] The second heater 7 can blow hot air upwards through the lower hot air nozzle 8 to evenly dry the tea leaves;

[0042] The bottom of the drying filter cylinder 10 is also connected to multiple rotatable baffles. After drying, the baffles at the bottom of the drying filter cylinder 10 can be opened one by one to take out different grades of tea leaves. The hot air during drying is discharged from the top and the dust is separated by the cyclone dust collector 23 to prevent pollution of the working environment.

[0043] Example 2:

[0044] A tea drying device with sieving function is provided in this embodiment, which is based on embodiment 1 with the following improvements, such as... Figure 1-5 As shown,

[0045] In this embodiment, a vibrating plate 19 is fixedly connected to one end of each of the multiple backflush blades 17, a swing motor 14 is fixedly connected to the lower part of the internal drying tube 3, a cam 20 is fixedly connected to the power output end of the swing motor 14, one side of the cam 20 is movably connected to the vibrating plate 19, a limit baffle 21 is fixedly connected to one side inside the internal drying tube 3, and a return spring 22 is fixedly connected to one end of the limit baffle 21 and the vibrating plate 19.

[0046] The vibrating plate 19 allows multiple backflush shovels 17 to move synchronously. When the swing motor 14 is working, it can drive the cam 20 to rotate, which in turn works with the return spring 22 to continuously squeeze the vibrating plate 19 to move back and forth, allowing the backflush shovels 17 to swing when turning the tea leaves, thus improving the uniformity of drying.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A tea leaf drying device with screening function, comprising an obliquely installed box (1), characterized in that: An internal drying pipe (3) is fixedly connected inside the box (1). A heater (4) is fixedly connected to the air inlet end of the internal drying pipe (3). A drying filter cylinder (10) is rotatably connected to one end of the internal drying pipe (3) and the box (1). Multiple graded filter plates (15) are fixedly connected inside the drying filter cylinder (10). Multiple backflushing pipes (16) are provided above the internal drying pipe (3). Multiple backflushing shovels (17) are slidably connected below the internal drying pipe (3). A rotary drive assembly is fixedly connected inside the box (1).

2. The tea drying device with a screening function according to claim 1, characterized in that: The rotary drive assembly includes a drive gear ring (11), a synchronous shaft (12), a drive gear (13), and a rotary motor (6). One side of the rotary motor (6) is fixedly connected to the outside of the housing (1). Both ends of the synchronous shaft (12) are rotatably connected to the inside of the housing (1). The other end of the synchronous shaft (12) is fixedly connected to the power output end of the rotary motor (6). Two drive gear rings (11) are fixedly connected to both sides of the drying filter cylinder (10). Two drive gears (13) are fixedly connected to both ends of the synchronous shaft (12). The drive gear rings (11) and drive gears (13) on the same side mesh with each other.

3. The tea drying device with a screening function according to claim 2, characterized in that: The lower part of the housing (1) is fixedly connected to a lower warm air nozzle (8), and the air inlet of the lower warm air nozzle (8) is fixedly connected to the air outlet of the second heater (7).

4. The tea drying device with a screening function according to claim 3, characterized in that: A top baffle (18) is fixedly connected above the drying filter cylinder (10). A feed inlet (2) is opened on one side of the box body (1) and the top baffle (18). A discharge outlet (5) is opened below the box body (1). Cover plates are rotatably connected inside the feed inlet (2) and the discharge outlet (5).

5. The tea drying device with a screening function according to claim 4, characterized in that: An exhaust pipe (9) is fixedly connected to the top of the housing (1), and a cyclone dust collector (23) is fixedly connected to one end of the exhaust pipe (9).

6. The tea drying device with a screening function according to claim 1, characterized in that: One end of each of the multiple backflush blades (17) is fixedly connected to a vibrating plate (19).

7. A tea drying device with sieving function according to claim 6, characterized in that: A swing motor (14) is fixedly connected below the internal drying tube (3). A cam (20) is fixedly connected to the power output end of the swing motor (14). One side of the cam (20) is movably connected to the vibrating plate (19).

8. A tea drying device with sieving function according to claim 7, characterized in that: A limiting baffle (21) is fixedly connected to one side of the inner drying tube (3), and a reset spring (22) is fixedly connected to one end of the limiting baffle (21) and the vibration plate (19).

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