Tea dryer with multi-layer drying structure

Abstract

This utility model discloses a multi-layer drying structure for tea drying, comprising a drying cylinder, a hot air assembly for drying tea, and a rotating assembly for drying tea. The hot air assembly includes a protective box fixedly connected to the outer surface of the drying cylinder, a motor fixedly connected to the outer surface of the protective box, a drive shaft fixedly connected to the output end of the motor, a first conical tooth fixedly connected to the outer surface of the drive shaft, and a connecting shaft rotatably connected inside the drying cylinder via bearings. By setting up the hot air assembly and the rotating assembly, the filter frames can be rotated inside the drying cylinder during the tea drying process, thereby effectively ensuring uniform heating of the tea and achieving a comprehensive drying effect, thus effectively improving the drying quality of the tea. Furthermore, the three sets of filter frames are arranged in a circular array inside the drying cylinder, which can avoid the influence of bottom moisture on the upper tea leaves. At the same time, the hot air assembly and the rotating assembly only require a single power source, the motor, which results in low energy consumption and strong practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of tea drying machines, and in particular to a tea drying machine with a multi-layer drying structure. Background Technology

[0002] Tea drying is a crucial step in the initial processing of tea, following the fixation and rolling processes. Its main function is to quickly remove excess free moisture from the tea leaves, fix the shape of the tea leaves after shaping, lock in the inherent aromatic substances in the tea leaves, and inhibit the enzymatic oxidation reaction inside the tea leaves, thereby ensuring the color, aroma and storage stability of the dried tea.

[0003] Application CN201921363653.0 discloses a multi-layer dryer for ceramic drying, which utilizes electric heating and air blowing to efficiently save energy and solves the problem of environmental pollution caused by fuel combustion in traditional ceramic dryers. The multi-layer placement trays improve the efficiency of ceramic production, and the rotating drying components, through a reasonable transmission system, allow the ceramic blanks to rotate sequentially during drying, ensuring uniform heating. However, in this patent, the rotation of the placement trays and the fan blades require separate motors, resulting in high energy consumption and poor practicality. Secondly, if tea is dried using the same multi-layer structure, the patent employs a bottom-concentrated airflow drying structure with stationary placement trays. Hot air flows upwards from the bottom of the equipment, causing the humid airflow from the lower layer of tea to easily rise and carry moisture to the upper layer, causing the upper layer of tea to become damp. This not only significantly prolongs the overall drying time and reduces drying efficiency but also leads to uneven drying and heating of tea from the same batch, resulting in inconsistent tea quality. Utility Model Content

[0004] The purpose of this invention is to provide a tea dryer with a multi-layer drying structure. During the tea drying process, the filter frames can rotate inside the drying cylinder, thereby effectively ensuring that the tea is heated evenly and achieving a comprehensive drying effect. This effectively improves the quality of tea drying. Furthermore, the three sets of filter frames are arranged in a ring array inside the drying cylinder, which can prevent moisture at the bottom from affecting the tea leaves at the top. At the same time, the hot air component and the rotating component only require a single power source, the motor, to drive them, resulting in low energy consumption and strong practicality.

[0005] To achieve the above objectives, a tea drying machine with a multi-layer drying structure is provided, comprising: The drying cylinder has a hot air assembly for drying tea leaves and a rotating assembly for drying tea leaves.

[0006] The hot air assembly includes a protective box fixedly connected to the outer surface of the drying cylinder, a motor fixedly connected to the outer surface of the protective box, a drive shaft fixedly connected to the output end of the motor, a first conical tooth fixedly connected to the outer surface of the drive shaft, a connecting shaft rotatably connected to the inside of the drying cylinder via a bearing, a second conical tooth fixedly connected to the outer surface of the connecting shaft, fan blades coaxially fixedly connected to the outer surface of the connecting shaft, several sets of heating tubes fixedly connected to the inner surface of the drying cylinder, and a temperature controller fixedly connected to the outer surface of the protective box, wherein the first conical tooth and the second conical tooth mesh with each other.

[0007] The rotating assembly includes a support box fixedly connected to the inner surface of the drying cylinder, a rotating shaft rotatably connected to the inside of the support box via bearings, several sets of fixed sleeves fixedly connected to the outer surface of the rotating shaft and evenly distributed, a filter frame fixedly connected to the outer surface of the fixed sleeves, a third conical tooth coaxially fixedly connected to the outer surface of the rotating shaft, a drive shaft rotatably connected to the inside of the drying cylinder via bearings, a fourth conical tooth fixedly connected to the outer surface of the drive shaft, a large gear coaxially fixedly connected to the outer surface of the drive shaft, a small gear coaxially fixedly connected to the outer surface of the drive shaft, and a perforated cover fixedly connected to the filter frame via a hinge. The third conical tooth meshes with the fourth conical tooth, and the large gear meshes with the small gear. The number of filter frames is three sets, which are arranged in a circular array along the circumference of the rotating shaft. Several sets of air holes are opened on the outer surface of the filter frame.

[0008] Preferably, a support base is fixedly connected to the lower surface of the drying cylinder.

[0009] Preferably, the outer surface of the drive shaft is rotatably connected to the protective box via a bearing, and the outer surface of the drive shaft is rotatably connected to the drying cylinder via a bearing.

[0010] Preferably, the outer surface of the connecting shaft is rotatably connected to the protective box via a bearing.

[0011] Preferably, the outer surface of the drive shaft is rotatably connected to the protective box via a bearing.

[0012] The above-mentioned solution has the following beneficial effects: By setting up a hot air component and a rotating component, the filter frame can be rotated inside the drying cylinder during the tea drying process, thereby effectively ensuring that the tea is heated evenly and achieving a comprehensive drying effect, thus effectively improving the quality of tea drying. In addition, the three sets of filter frames are arranged in a ring array inside the drying cylinder, which can avoid the influence of bottom moisture on the upper tea. At the same time, the hot air component and the rotating component only need a single power source, the motor, to drive them, resulting in low energy consumption and strong practicality.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a multi-layer drying structure tea dryer according to the present invention; Figure 2 This is a top view of the overall structure of a multi-layer drying tea dryer according to the present invention; Figure 3 This is a cross-sectional view of the overall structure of a multi-layer drying structure tea dryer according to this utility model; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the perforated cover of a tea dryer with a multi-layer drying structure according to this utility model, in the open state.

[0015] Legend: The components are as follows: 1. Drying cylinder; 2. Protective box; 3. Motor; 4. Drive shaft; 5. First conical tooth; 6. Connecting shaft; 7. Second conical tooth; 8. Fan blade; 9. Heating tube; 10. Temperature controller; 11. Support box; 12. Rotating shaft; 13. Fixing sleeve; 14. Filter frame; 15. Third conical tooth; 16. Transmission shaft; 17. Fourth conical tooth; 18. Large gear; 19. Small gear; 20. Support base; 21. Cover with holes. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a multi-layer drying structure for tea drying, which includes: a drying cylinder 1, which has a hot air assembly for drying tea and a rotating assembly for drying tea, and a support base 20 is fixedly connected to the lower surface of the drying cylinder 1.

[0018] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5The hot air assembly includes a protective box 2 fixedly connected to the outer surface of the drying cylinder 1, a motor 3 fixedly connected to the outer surface of the protective box 2, a drive shaft 4 fixedly connected to the output end of the motor 3, a first conical tooth 5 fixedly connected to the outer surface of the drive shaft 4, a connecting shaft 6 rotatably connected to the inside of the drying cylinder 1 via bearings, a second conical tooth 7 fixedly connected to the outer surface of the connecting shaft 6, fan blades 8 coaxially fixedly connected to the outer surface of the connecting shaft 6, several sets of heating tubes 9 fixedly connected to the inner surface of the drying cylinder 1, and a temperature controller 10 fixedly connected to the outer surface of the protective box 2 (the temperature control circuit of the temperature controller 10 controlling the heating tubes 9 can be implemented by simple programming by those skilled in the art, so it will not be described in detail). The outer surface of the drive shaft 4 is rotatably connected to the protective box 2 via bearings, the outer surface of the drive shaft 4 is rotatably connected to the drying cylinder 1 via bearings, the first conical tooth 5 and the second conical tooth 7 mesh, and the outer surface of the connecting shaft 6 is rotatably connected to the protective box 2 via bearings.

[0019] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 The rotating assembly includes a support box 11 fixedly connected to the inner surface of the drying cylinder 1, a rotating shaft 12 rotatably connected to the inside of the support box 11 via bearings, several sets of fixed sleeves 13 fixedly connected to the outer surface of the rotating shaft 12 and evenly distributed, a filter frame 14 fixedly connected to the outer surface of the fixed sleeves 13, a third conical tooth 15 coaxially fixedly connected to the outer surface of the rotating shaft 12, a drive shaft 16 rotatably connected to the inside of the drying cylinder 1 via bearings, a fourth conical tooth 17 fixedly connected to the outer surface of the drive shaft 16, and a large gear 18 coaxially fixedly connected to the outer surface of the drive shaft 16. A small gear 19 is coaxially fixed to the outer surface of the drive shaft 4, and a perforated cover 21 is fixed to the filter frame 14 by a hinge (the appropriate material is selected as needed to increase the counterweight and reduce the possibility of automatic opening during rotation). The third conical tooth 15 meshes with the fourth conical tooth 17. The outer surface of the drive shaft 16 is rotatably connected to the protective box 2 through a bearing. The large gear 18 meshes with the small gear 19. There are three sets of filter frames 14, which are arranged in a ring array along the circumference of the rotating shaft 12. Several sets of air holes are opened on the outer surface of the filter frame 14.

[0020] Those skilled in the art should connect all electrical components in this case to their compatible external power supply via wires, and should select a suitable controller according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0021] Working principle: During operation, because the three sets of filter frames 14 are arranged in a ring, such as Figure 2As shown, the perforated cover 21 can be easily opened and the tea leaves to be dried poured into each filter frame 14. The perforated cover 21 is then closed again to prevent the tea leaves from spilling. The motor 3 is then started, driving the drive shaft 4. Through the meshing of the first conical gear 5 and the second conical gear 7, the small gear 19 and the large gear 18, and the fourth conical gear 17 and the third conical gear 15, the filter frames 14 and the fan blades 8 can rotate synchronously. The size of the small gear 19 and the large gear 18 ensures the speed difference between the fan blades 8 and the filter frames 14, preventing the filter frames 14 from rotating too fast or the fan blades 8 from rotating too slow. Simultaneously, temperature control... The device 10 controls the heating tube 9 to reach the required drying temperature. Then, under the blowing action of the fan blades 8, air can be blown onto the heating tube 9 to achieve heating. Finally, the hot air is transferred to the inside of the filter frame 14 through the air holes to dry the tea leaves. The moisture is directly discharged through the opening at the top of the drying cylinder 1, which effectively reduces the impact of the moisture in the lower layer on the upper layer of tea leaves, thus effectively ensuring the drying rate of the tea leaves. At the same time, with the rotation of the filter frame 14, it can ensure that the tea leaves inside each filter frame 14 are heated evenly, thereby improving the drying quality of the tea leaves. In addition, the hot air component and the rotating component only need a single power source, the motor 3, to drive them, resulting in low energy consumption and strong practicality.

[0022] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A tea dryer of a multi-layer drying structure, characterized in that, include: The drying cylinder (1) has a hot air assembly for drying tea leaves and a rotating assembly for drying tea leaves, which are disposed on the drying cylinder (1); The hot air assembly includes a protective box (2) fixedly connected to the outer surface of the drying cylinder (1), a motor (3) fixedly connected to the outer surface of the protective box (2), a drive shaft (4) fixedly connected to the output end of the motor (3), a first conical tooth (5) fixedly connected to the outer surface of the drive shaft (4), a connecting shaft (6) rotatably connected to the inside of the drying cylinder (1) via a bearing, a second conical tooth (7) fixedly connected to the outer surface of the connecting shaft (6), a fan blade (8) coaxially fixedly connected to the outer surface of the connecting shaft (6), several sets of heating tubes (9) fixedly connected to the inner surface of the drying cylinder (1), and a temperature controller (10) fixedly connected to the outer surface of the protective box (2). The first conical tooth (5) meshes with the second conical tooth (7). The rotating assembly includes a support box (11) fixedly connected to the inner surface of the drying cylinder (1), a rotating shaft (12) rotatably connected to the inside of the support box (11) via bearings, several sets of fixed sleeves (13) fixedly connected to the outer surface of the rotating shaft (12) and equidistantly distributed, a filter frame (14) fixedly connected to the outer surface of the fixed sleeves (13), a third conical tooth (15) coaxially fixedly connected to the outer surface of the rotating shaft (12), a drive shaft (16) rotatably connected to the inside of the drying cylinder (1) via bearings, and a fourth conical tooth (16) fixedly connected to the outer surface of the drive shaft (16). 7) A large gear (18) is coaxially fixed to the outer surface of the transmission shaft (16), a small gear (19) is coaxially fixed to the outer surface of the drive shaft (4), and a perforated cover (21) is fixed to the filter frame (14) by a hinge. The third conical tooth (15) meshes with the fourth conical tooth (17), the large gear (18) meshes with the small gear (19), the number of filter frames (14) is three sets and they are arranged in a ring array along the circumference of the rotating shaft (12), and the outer surface of the filter frame (14) is provided with several sets of air holes.

2. A tea dryer of multi-tiered drying structure as claimed in claim 1, wherein, A support base (20) is fixedly connected to the lower surface of the drying cylinder (1).

3. A tea dryer of multi-layer drying structure as claimed in claim 1, wherein, The outer surface of the drive shaft (4) is rotatably connected to the protective box (2) through a bearing, and the outer surface of the drive shaft (4) is rotatably connected to the drying cylinder (1) through a bearing.

4. A tea drying machine with a multi-layer drying structure according to claim 1, characterized in that, The outer surface of the connecting shaft (6) is rotatably connected to the protective box (2) via a bearing.

5. A tea drying machine with a multi-layer drying structure according to claim 1, characterized in that, The outer surface of the drive shaft (16) is rotatably connected to the protective box (2) via a bearing.

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