Tea leaf roasting machine

Abstract

The application relates to a tea leaf roasting machine, which comprises a frame body, four supporting seats arranged in a rectangular shape on the frame body, a roller rotatably arranged between the top portions of the four supporting seats, the roller having a feeding end and a discharging end for tea leaves, a heating bin arranged on the frame body and located outside the roller, a rotating shaft arranged inside the roller, a heating shell arranged outside the rotating shaft, the heating shell being in a cylindrical shape, a heating unit arranged in the heating shell, a blowing unit arranged on the feeding end of the roller, and a driving member arranged on the frame body. The application can realize synchronous rotation of the roller and the heating shell, the tea leaves directly contact the heating shell, the uniformity of tea leaf roasting is improved, the traditional roasting mode that the tea leaves directly contact the pot wall and the friction between the tea leaves is simulated, the shape of the tea leaves is molded, the tea strands are tightened, and the overall quality of the tea leaves is improved.

Description

Technical Field

[0001] This application relates to the field of tea processing technology, and in particular to a tea drying machine. Background Technology

[0002] In tea processing, the drying process is crucial, directly affecting the final appearance, color, aroma, and taste of the tea. Traditionally, tea is dried by placing it on the heated wall of a wok. During this process, the tea leaves are in direct contact with the hot wok wall, and the heat conduction causes the internal moisture to gradually evaporate. Simultaneously, the friction between the tea leaves and the wok wall, as well as among the leaves themselves, shapes the tea, causing the leaves to gradually tighten and form a tea product with a unique appearance and quality. However, with the continuous development of tea processing technology, traditional drying methods often rely on manual labor, which is relatively inefficient and cannot meet the needs of large-scale tea production.

[0003] Existing tea drying equipment is beginning to adopt drum heating. This type of equipment typically places the tea leaves inside a drum, where external heating equipment transfers heat to the drum, which then conducts the heat to the tea leaves inside, causing moisture loss. This heating method improves production efficiency to some extent, enabling batch drying of tea leaves, and is relatively simple to operate, reducing reliance on manual labor.

[0004] However, existing drum-heated tea drying equipment, because the tea leaves are constantly rolling inside the drum, cannot directly contact the heat source as in traditional methods. The drying process relies mainly on the drum's rotation and the collisions between the leaves, lacking direct contact with the heat source. This results in less than ideal shaping and tightening of the tea leaves after drying. The dried tea often fails to achieve the tightly rolled, uniform shape of traditional methods, and its color may also be less vibrant.

[0005] To address the above problems, a tea drying machine has been designed. Utility Model Content

[0006] This application provides a tea drying machine to solve the problem that in existing drum-heated tea drying equipment, the tea leaves lack direct contact with the heat source inside the drum, resulting in unsatisfactory shaping and tightening of the tea leaves.

[0007] Firstly, a tea drying machine is provided, comprising:

[0008] The frame has four rectangular support bases, and a roller is rotatably arranged between the tops of the four support bases. The roller has an inlet end and an outlet end for tea leaves.

[0009] The frame is equipped with a heating chamber located outside the drum. A rotating shaft is located inside the drum, and a heating shell is located outside the rotating shaft. The heating shell is cylindrical and contains a heating unit. An air blowing unit is located at the feed end of the drum to blow the tea leaves fed in at the feed end toward the discharge end. A drive unit is located on the frame and is connected to the rotating shaft to drive the drum and the heating shell to rotate synchronously.

[0010] In some embodiments, the support base includes fixed rods disposed opposite to each other on the frame, and a second rotating shaft is rotatably disposed between the two fixed rods, with rollers disposed on the second rotating shaft.

[0011] In some embodiments, the roller is cylindrical with open ends. The openings at both ends of the roller are for feeding tea leaves and discharging tea leaves, respectively. The roller has multiple through holes for gas circulation.

[0012] Both ends of the roller are provided with metal rings, and the two sides of the metal rings slide in cooperation with the corresponding rollers;

[0013] The roller is provided with multiple reinforcing rings, which are distributed along the length of the roller.

[0014] In some embodiments, the heating chamber includes a rectangular shell mounted on a frame, the roller is located inside the rectangular shell, and the rectangular shell has through holes at both ends adapted to the roller, with two metal rings extending outward through the through holes;

[0015] A cover plate is provided on the top of the rectangular shell.

[0016] In some embodiments, the cover plate is also provided with a plurality of exhaust fans embedded therein, which are used to remove moisture emanating from above the rectangular housing.

[0017] In some embodiments, the heating unit includes a plurality of electric heating wires disposed inside the heating housing, the plurality of electric heating wires being distributed along the length of the heating housing.

[0018] In some embodiments, the air blowing unit includes a fan and a heating box, the heating box is provided with an electric heating wire, and the heating box is connected to an air blowing pipe, the other end of which faces the feed end;

[0019] The fan has a filter screen installed on its air inlet pipe, and the fan's air outlet pipe is connected to the heating box.

[0020] In some embodiments, two support frames are arranged opposite each other on the side of the frame near the feed end. The support frames are n-shaped, and the other end of the support frames extends into the inside of the drum. The support frames are provided with guide plates for guiding tea leaves in.

[0021] The blower is located between the two guide plates.

[0022] In some embodiments, the drive unit includes a mounting base disposed on the side of the frame near the discharge end, a drive motor and a reducer are disposed on the mounting base, the output shaft of the drive motor is connected to the input shaft of the reducer, a transmission rod is disposed at one end of the rotating shaft, and a gear is disposed at one end of the transmission rod and the output shaft of the reducer, and the two gears are driven by a chain.

[0023] The other end of the rotating shaft is provided with a bearing seat, and the bottom of the bearing seat is provided with a fixing seat, which is located between the two support frames extending into the inside of the drum.

[0024] This application provides a tea drying machine. By synchronously rotating the drum and the heating shell, the tea leaves are continuously tumbling inside the drum, and the tea leaves are in direct contact with the heating shell, which makes the tea leaves heat more evenly and improves the uniformity of drying. At the same time, this tumbling process simulates the direct contact between the tea leaves and the pot wall in the traditional frying method, as well as the friction between the tea leaves, which helps to shape the shape of the tea leaves and tighten the strips, thus improving the overall quality of the tea.

[0025] The tea leaves are blown towards the discharge end by the air blowing unit, allowing them to move and tumble more quickly inside the drum. This increases the contact area and time between the tea leaves and the heat, thereby improving the drying efficiency and shortening the drying time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0027] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ;

[0028] Figure 2 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ;

[0029] Figure 3 A front sectional view provided for an embodiment of this application;

[0030] Figure 4 A three-dimensional schematic diagram of the connection structure between the drum and the heating shell provided in the embodiments of this application;

[0031] Figure 5 A three-dimensional schematic diagram of the connection structure between the roller and the drive component provided in an embodiment of this application.

[0032] In the diagram: 1. Frame; 2. Support base; 3. Roller; 31. Feed end; 32. Discharge end; 33. Metal ring; 34. Reinforcing ring; 4. Heating chamber; 41. Rectangular shell; 42. Cover plate; 5. Rotating shaft; 6. Heating shell; 7. Heating unit; 71. Electric heating wire; 8. Air blowing unit; 81. Fan; 82. Heating box; 83. Electric heating wire II; 84. Air blowing pipe; 9. Drive component; 91. Mounting base; 92. Drive motor; 93. Reducer; 94. Transmission rod; 95. Gear; 96. Bearing seat; 97. Fixed base; 10. Exhaust fan; 11. Support frame; 12. Guide plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] This application provides a tea drying machine that solves the problem in existing drum-heated tea drying equipment where the tea leaves lack direct contact with the heat source inside the drum, resulting in unsatisfactory shaping and leaf tightening effects.

[0035] Please see Figures 1-3 A tea drying machine frame 1 has four rectangular support seats 2 on it, and a roller 3 is rotatably arranged between the tops of the four support seats 2. The roller 3 has a feeding end 31 and a discharging end 32 for tea.

[0036] The frame 1 is provided with a heating chamber 4 located outside the drum 3. The inner side of the drum 3 is provided with a rotating shaft 5. The outer side of the rotating shaft 5 is provided with a heating shell 6. The heating shell 6 is cylindrical. The heating shell 6 is provided with a heating unit 7. The feed end 31 of the drum 3 is provided with an air blowing unit 8. The air blowing unit 8 is used to blow the tea leaves fed into the feed end 31 to the discharge end 32. The frame 1 is provided with a driving component 9. The driving component 9 is connected to the rotating shaft 5 and is used to drive the drum 3 and the heating shell 6 to rotate synchronously.

[0037] The tea leaves to be dried are fed into the drum 3 from the feed end 31. The air blowing unit 8 set at the feed end 31 starts to work, blowing the tea leaves entering the feed end 31 towards the discharge end 32, so that the tea leaves move along the length of the drum 3 inside the drum.

[0038] The heating unit 7 inside the heating shell 6 starts working, generating heat to heat the tea leaves inside the drum 3, causing the moisture in the tea leaves to gradually dissipate, achieving the purpose of drying. At the same time, the drive component 9 on the frame 1 is connected to the rotating shaft 5, driving the drum 3 and the heating shell 6 to rotate synchronously. During the rotation, the tea leaves tumble continuously inside the drum 3, which on the one hand allows the tea leaves to come into contact with the heat generated by the heating unit 7 more evenly, improving heating efficiency; on the other hand, the tumbling process also helps to shape the tea leaves and tighten the strips.

[0039] After being dried, the tea leaves are discharged from the discharge end 32 of the drum 3 as the drum 3 rotates and the air blowing unit 8 blows them.

[0040] By rotating the drum 3 and the heating shell 6 synchronously, the tea leaves tumble continuously inside the drum 3, and the tea leaves come into direct contact with the heating shell 6. This allows the tea leaves to be heated more evenly, which helps to improve the uniformity of the tea leaves during the roasting process. At the same time, this tumbling process simulates the direct contact between the tea leaves and the pot wall in the traditional roasting method, as well as the friction between the tea leaves, which helps to shape the tea leaves and tighten the strips, thus improving the overall quality of the tea.

[0041] The tea leaves are blown towards the discharge end 32 by the air blowing unit 8, which allows the tea leaves to move and tumble more quickly in the drum 3, increasing the contact area and contact time between the tea leaves and the heat, thereby improving the drying efficiency of the tea leaves and shortening the drying time.

[0042] like Figure 2 and Figure 5 As shown, in one embodiment, the support base 2 includes fixed rods disposed opposite to each other on the frame 1, and a second rotating shaft is rotatably disposed between the two fixed rods, with rollers disposed on the second rotating shaft.

[0043] The fixed rods set on the frame 1 form the basic frame. The roller 3 is placed on the roller. When the drive component 9 drives the roller 3 to rotate, the roller 3 and the roller will move relative to each other. During the rotation of the roller 3, the roller will roll along with it, thereby reducing the friction between the roller 3 and the supporting component when the roller 3 rotates, so that the roller 3 can rotate more smoothly.

[0044] like Figure 3 and Figure 4As shown, the roller 3 in this embodiment is cylindrical with open ends. The openings at both ends of the roller 3 are the feed end 31 and the discharge end 32 for tea leaves, respectively. The roller 3 has multiple through holes for gas flow. Metal rings 33 are provided at both ends of the roller 3, and the two sides of the metal rings 33 slide in cooperation with the corresponding rollers. Multiple reinforcing rings 34 are provided on the roller 3, and the multiple reinforcing rings 34 are distributed along the length of the roller 3.

[0045] The openings at both ends of the drum 3 serve as the feed end 31 and the discharge end 32, respectively. During the tea drying process, the tea leaves enter the drum 3 from the feed end 31. With the rotation of the drum 3 and the action of the air blowing unit 8, the tea leaves tumble inside the drum 3 and move toward the discharge end 32, and are finally discharged from the discharge end 32, thus realizing continuous feeding and discharging of the tea leaves.

[0046] Multiple through holes on the drum 3 provide channels for gas circulation. During the drying process, the heat generated by the heating unit 7 will raise the internal temperature of the drum 3, causing the moisture in the tea leaves to evaporate and form humidity. This humidity can be discharged from the drum 3 through the through holes, while relatively dry air from the outside can also enter the drum 3, forming a good gas circulation, which is beneficial to improving the drying efficiency and quality of the tea leaves.

[0047] The metal ring 33 slides on the roller on the support base 2. When the driving component 9 drives the drum 3 to rotate, the metal ring 33 slides on the roller, so that the drum 3 can rotate stably around its own axis, ensuring that the tea leaves tumble evenly in the drum 3, achieving uniform heating and drying.

[0048] The reinforcing ring 34 reinforces the roller 3. During the rotation of the roller 3, the tea leaves tumble inside the roller 3, which exerts a certain force on the roller 3. The reinforcing ring 34 can enhance the structural strength of the roller 3 and prevent the roller 3 from deforming due to the force.

[0049] like Figure 3 and Figure 5 As shown, the heating chamber 4 in this embodiment includes a rectangular shell 41 mounted on the frame 1, the roller 3 is located inside the rectangular shell 41, and the rectangular shell 41 has through holes at both ends that are adapted to the roller 3. Two metal rings 33 extend outward through the through holes. A cover plate 42 is provided on the top of the rectangular shell 41.

[0050] The roller 3 is placed inside the rectangular housing 41, which provides space for the roller 3 to dry the tea leaves. Meanwhile, the metal rings 33 at both ends of the roller 3 extend outward through the through holes and slide with the rollers on the support base 2, so that the roller 3 can rotate stably inside the rectangular housing 41.

[0051] During the tea drying process, the heat generated by the heating unit 7 will accumulate inside the rectangular shell 41. Since the rectangular shell 41 and the cover plate 42 form a relatively closed space, the heat is not easily lost and can be better transferred to the drum 3 and the tea inside the drum 3, thereby improving the heating efficiency and accelerating the loss of moisture from the tea.

[0052] like Figure 1 and Figure 2 As shown, furthermore, a plurality of exhaust fans 10 are also embedded in the cover plate 42, which are used to remove the moisture emitted from the top of the rectangular shell 41.

[0053] During the tea drying process, the tea leaves inside the drum 3 are heated, and the moisture evaporates to form humidity. The humidity rises to the top of the rectangular shell 41. At this time, the exhaust fan 10 starts to work and generates negative pressure to quickly draw the accumulated humidity from the top of the rectangular shell 41 away from the heating chamber 4, so that the heating chamber 4 maintains a relatively dry environment.

[0054] like Figure 1 and Figure 4 As shown, in one embodiment, the heating unit 7 includes a plurality of electric heating wires 71 disposed inside the heating housing 6, and the plurality of electric heating wires 71 are distributed along the length of the heating housing 6.

[0055] The electric heating wire 71 is located inside the heating shell 6 and is distributed along the length of the heating shell 6. When the tea is being dried, the electric heating wire 71 is energized and generates heat under the action of the current. Since the electric heating wire 71 is evenly distributed inside the heating shell 6, the heat can be evenly distributed to the heating shell 6, thereby heating the tea in the drum 3, causing the moisture in the tea to gradually evaporate, and achieving the purpose of drying the tea.

[0056] like Figure 3 and Figure 5 As shown, in one embodiment, the air blowing unit 8 includes a fan 81 and a heating box 82. The heating box 82 is provided with an electric heating wire 83. An air blowing pipe 84 is connected to the heating box 82, and the other end of the air blowing pipe 84 faces the feed end 31. A filter screen is provided on the air inlet pipe of the fan 81, and the air outlet pipe of the fan 81 is connected to the heating box 82.

[0057] After the fan 81 is started, outside air enters through the air inlet pipe of the fan 81. The filter screen on the air inlet pipe will filter the incoming air, intercepting dust in the air and preventing impurities from contaminating the tea leaves.

[0058] Filtered air enters the heating chamber 82 through the air outlet pipe of the fan 81. The electric heating wire 83 installed inside the heating chamber 82 generates heat when energized, which heats the air entering the heating chamber 82 to form hot air. The heated hot air is blown out through the air blower 84. When the tea leaves enter the drum 3 from the feed end 31, the hot air will blow the tea leaves towards the discharge end 32. At the same time, the hot air will also preheat the tea leaves, which helps the moisture in the tea leaves to evaporate.

[0059] like Figure 1 and Figure 5 As shown, in one embodiment, two support frames 11 are arranged opposite each other on the side of the frame 1 near the feed end 31. The support frames 11 are n-shaped, and the other end of the support frames 11 extends into the inside of the roller 3. The support frames 11 are provided with guide plates 12 for guiding tea leaves into the roller. The blowing pipe 84 is located between the two guide plates 12.

[0060] One end of the support frame 11 is fixed to the frame 1, and the other end extends into the inside of the roller 3. The support frame 11 provides a support base for the guide plate 12, so that the guide plate 12 can be installed in a suitable position.

[0061] The guide plate 12 is placed on the support frame 11. When tea leaves are added into the drum 3, the tea leaves can slide smoothly into the drum 3 along the guide plate 12, which avoids the tea leaves from scattering or piling up at the feed end 31 during the feeding process, and ensures the smooth feeding of tea leaves.

[0062] The blower pipe 84 is located between the two guide plates 12. When hot air is blown out from the blower pipe 84, it acts on the tea leaves that slide down from the guide plates 12, so that the tea leaves are evenly distributed in the drum 3. On the other hand, the hot air can initially heat the tea leaves, promote the evaporation of moisture in the tea leaves, and prepare for the subsequent drying process.

[0063] like Figure 4 As shown in the figure, in one embodiment, both the heating housing 6 and the rotating shaft 5 are provided with a plurality of ring-shaped fixing rods, the other end of which is connected to the inner side of the roller 3.

[0064] The heating housing 6, the rotating shaft 5, and the roller 3 are connected as a whole by a fixing rod.

[0065] In one embodiment, the drive component 9 includes a mounting base 91 disposed on the side of the frame 1 near the discharge end 32. The mounting base 91 is provided with a drive motor 92 and a reducer 93. The output shaft of the drive motor 92 is connected to the input shaft of the reducer 93. One end of the rotating shaft 5 is provided with a transmission rod 94. One end of the transmission rod 94 and the output shaft of the reducer 93 are both provided with gears 95. The two gears 95 are driven by a chain. The other end of the rotating shaft 5 is provided with a bearing seat 96. The bottom of the bearing seat 96 is provided with a fixing seat 97. The fixing seat 97 is disposed between the ends of the two support frames 11 extending into the inside of the roller 3.

[0066] After the drive motor 92 starts, its output shaft begins to rotate, transmitting power to the input shaft of the reducer 93 connected to it. The reducer 93 reduces the high-speed rotation output by the drive motor 92, converting the high-speed, low-torque power into low-speed, high-torque power. Since the two gears 95 are driven by a chain, the power output by the reducer 93 is transmitted to the transmission rod 94 via the chain, thereby driving the rotating shaft 5 and the heating shell 6 to rotate.

[0067] The rotating shaft 5 and the heating shell 6 are connected to the drum 3 by a fixed rod. When the rotating shaft 5 rotates, the drum 3 also rotates around its own axis. During the rotation, the tea leaves inside the drum 3 tumble continuously under the action of gravity and friction, achieving uniform heating and drying.

[0068] The bearing housing 96 provides support for one end of the rotating shaft 5, enabling it to rotate stably.

[0069] It should be noted that the transmission rod 94 is a heat insulation rod, which is a glass fiber rod or a PA66 heat insulation rod (polyhexamethylene adipamide, nylon 66).

[0070] During the tea-drying process, the internal temperature of drum 3 is high, transferring a large amount of heat from drum 3 to the area where reducer 93 and drive motor 92 are located. The heat insulation rod can effectively prevent or significantly reduce the transfer of heat from drum 3 to the drive components, protecting the drive components from high temperatures.

[0071] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0072] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0073] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A tea drying machine, characterized in that, include: The frame (1) has four rectangular support seats (2) on it, and a roller (3) is rotatably arranged between the tops of the four support seats (2). The roller (3) has a feeding end (31) and a discharging end (32) for tea leaves. The frame (1) is provided with a heating chamber (4) located outside the drum (3). The inner side of the drum (3) is provided with a rotating shaft (5). The outer side of the rotating shaft (5) is provided with a heating shell (6). The heating shell (6) is cylindrical. The heating shell (6) is provided with a heating unit (7). The feed end (31) of the drum (3) is provided with an air blowing unit (8). The air blowing unit (8) is used to blow the tea leaves fed into the feed end (31) to the discharge end (32). The frame (1) is provided with a driving component (9). The driving component (9) is connected to the rotating shaft (5) and is used to drive the drum (3) and the heating shell (6) to rotate synchronously.

2. The tea drying machine as described in claim 1, characterized in that: The support base (2) includes fixed rods that are relatively arranged on the frame (1), and a rotating shaft is rotatably arranged between the two fixed rods, and a roller is arranged on the rotating shaft.

3. The tea drying machine as described in claim 2, characterized in that: The roller (3) is cylindrical and open at both ends. The openings at both ends of the roller (3) are for feeding tea leaves (31) and discharging tea leaves (32), respectively. The roller (3) has multiple through holes for gas circulation. Both ends of the roller (3) are provided with metal rings (33), and the two sides of the metal rings (33) slide in cooperation with the corresponding rollers; The roller (3) is provided with a plurality of reinforcing rings (34), which are distributed along the length of the roller (3).

4. The tea drying machine as described in claim 3, characterized in that: The heating chamber (4) includes a rectangular shell (41) set on the frame (1), the roller (3) is located inside the rectangular shell (41), and the two ends of the rectangular shell (41) are provided with through holes adapted to the roller (3), and the two metal rings (33) extend outward through the through holes; A cover plate (42) is provided on the top of the rectangular shell (41).

5. A tea drying machine as described in claim 4, characterized in that: The cover plate (42) is also provided with a plurality of exhaust fans (10), which are used to extract the moisture emitted from the top of the rectangular shell (41).

6. The tea drying machine as described in claim 1, characterized in that: The heating unit (7) includes a plurality of electric heating wires (71) disposed inside the heating shell (6), and the plurality of electric heating wires (71) are distributed along the length of the heating shell (6).

7. A tea drying machine as described in claim 1, characterized in that: The air blowing unit (8) includes a blower (81) and a heating box (82). The heating box (82) is equipped with an electric heating wire (83). The heating box (82) is connected to an air blowing pipe (84), and the other end of the air blowing pipe (84) faces the feed end (31). The air inlet pipe of the fan (81) is equipped with a filter screen, and the air outlet pipe of the fan (81) is connected to the heating box (82).

8. A tea drying machine as described in claim 7, characterized in that: Two support frames (11) are arranged opposite each other on the side of the frame (1) near the feed end (31). The support frame (11) is n-shaped and the other end of the support frame (11) extends into the inside of the drum (3). A guide plate (12) for guiding tea leaves into the support frame (11) is provided. The blower tube (84) is located between the two guide plates (12).

9. A tea drying machine as described in claim 8, characterized in that: The drive unit (9) includes a mounting base (91) disposed on the side of the frame (1) near the discharge end (32). The mounting base (91) is provided with a drive motor (92) and a reducer (93). The output shaft of the drive motor (92) is connected to the input shaft of the reducer (93). One end of the rotating shaft (5) is provided with a transmission rod (94). One end of the transmission rod (94) and the output shaft of the reducer (93) are both provided with gears (95). The two gears (95) are driven by a chain. The other end of the rotating shaft (5) is provided with a bearing seat (96), and the bottom of the bearing seat (96) is provided with a fixing seat (97). The fixing seat (97) is located between the two support frames (11) extending into the inside of the roller (3).

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