Tea dryer with turnover function

Abstract

This utility model discloses a tea dryer with a flipping function, relating to the field of tea processing technology. The tea dryer with a flipping function includes a base, under which a servo motor is fixedly installed. A drive pulley is fixedly installed on the output shaft of the servo motor. A rotating rod is rotatably installed above the base, on which a driven pulley and a gear are fixedly installed. The drive pulley and the driven pulley are connected by a synchronous belt meshing transmission. A feeding hopper is fixedly installed above the hot air chamber, with its lower end passing through the top of the hot air chamber and extending to the inlet of the chamber. A stepper motor is fixedly installed inside the feeding hopper, with a spiral blade fixedly installed on its output shaft. The outer edge of the spiral blade fits against the inner wall of the feeding hopper, and the blade tip is close to the inlet of the chamber. The overall structure, through the coordinated operation of its components, achieves automated tea drying, reduces labor costs, and ensures tea quality, making it suitable for mass production needs.

Description

Technical Field

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

[0002] Currently, in the field of tea processing technology, drying equipment has many shortcomings in practical applications. During the tea drying process, insufficient turning of the tea leaves often leads to some tea leaves accumulating at the bottom or corners of the equipment for a long time, failing to make full contact with the heat source. This results in localized overheating and scorching or excessive moisture residue, which seriously affects the color and taste of the tea and reduces the quality of the finished product. At the same time, the hot air circulation system of traditional equipment is poorly designed, with uneven distribution of hot air inside the equipment. Some areas have excessive hot air flow, causing the tea leaves to be over-dried, while other areas have insufficient hot air, resulting in low drying efficiency. This not only prolongs the drying time but also increases energy consumption. Patent application number CN202420427957.3 discloses a tea drying machine. Its solution can solve the problem that tea leaves tend to clump together and accumulate during the use of existing drying machines, resulting in uneven heating and reduced drying effect. However, this solution does not address the feeding stage. Traditional equipment lacks a stable conveying mechanism, and blockages are prone to occur when feeding tea leaves. Frequent manual intervention is required, which not only increases labor costs but also causes the feeding amount to fluctuate, disrupting the drying rhythm and further aggravating the problem of uneven drying. In addition, the stability of the equipment during operation is poor. Shaking or vibration often occurs due to structural design defects, which not only affects the service life of the equipment but may also cause the tea leaves to collide and break inside the equipment, increasing the tea breakage rate. Meanwhile, traditional equipment suffers from poor sealing performance, leading to hot air leakage during circulation and heat loss. This forces the equipment to continuously consume more energy to maintain the drying temperature, which is neither environmentally friendly nor economical. Furthermore, the lack of an effective collaborative operation mechanism results in poor coordination between the various parts of the equipment, leading to low automation in the drying process. This requires manual monitoring and adjustment throughout the process, increasing operational difficulty and making it difficult to ensure consistent drying quality across different batches of tea. This hinders large-scale production. These problems collectively restrict the efficiency and quality of tea drying, making it difficult to meet the demands of modern tea processing. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a tea drying machine with a flipping function, which can solve the problems of poor coordination between various parts of the equipment, low degree of automation, and insufficient tea flipping leading to local overheating and scorching or excessive moisture residue.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A tea drying machine with a flipping function includes a base, a servo motor is fixedly installed below the base, a drive pulley is fixedly installed on the output shaft of the servo motor, a rotating rod is rotatably installed above the base, a driven pulley and a gear are fixedly installed on the rotating rod, and the drive pulley and the driven pulley are connected by a synchronous belt meshing transmission. Four grooved guide wheels are fixedly installed on the top of the base. A barrel body is provided on the top of the base. Annular guide rails are fixedly installed on the outer sides of both ends of the barrel body. The annular guide rails are embedded in the grooves of the guide wheels. A gear ring is fixedly installed on the outer periphery of the middle part of the barrel body. The gear ring meshes with a gear. Lifting plates are fixedly installed circumferentially inside the barrel body. The front end of the lifting plates is spiral-shaped. Hot air chambers and discharge chambers are fixedly installed on both sides of the base, and the two ends of the barrel are rotatably connected to the hot air chambers and discharge chambers through rotating seals, and the three are internally interconnected. An inlet fan and an electric heating tube are fixedly installed inside the hot air chamber. The electric heating tube is located between the inlet fan and the barrel. An outlet fan is fixedly installed on the discharge chamber, and the outlet of the outlet fan leads to the outside. A feeding hopper is fixedly installed above the hot air chamber. The lower end of the feeding hopper passes through the top of the hot air chamber and extends to the inlet of the barrel. A stepper motor is fixedly installed inside the feeding hopper. A spiral blade is fixedly installed on the output shaft of the stepper motor. The outer edge of the spiral blade is in contact with the inner wall of the feeding hopper, and the end of the blade is close to the inlet of the barrel.

[0005] Preferably, the four guide wheels are arranged in a rectangular shape above the base, and correspond to the inner and outer sides of the annular guide rails at both ends of the barrel, respectively.

[0006] Preferably, the cross-section of the annular guide rail is T-shaped, and the groove of the guide wheel is adapted to the T-shaped guide rail to form an axial limiting structure.

[0007] Preferably, the lifting plates are distributed at equal intervals along the axial direction of the inner wall of the barrel, and the spiral directions of adjacent lifting plates are opposite.

[0008] Preferably, the rotary seal is a double-lip mechanical seal ring, with its stationary ring fixed to the ports of the hot air chamber and the discharge chamber, and its rotating ring fixed to the outer wall of the end of the barrel.

[0009] Preferably, the electric heating tubes are distributed circumferentially along the cross-section of the hot air chamber and are positioned opposite to the air outlet of the inlet fan.

[0010] Preferably, the pitch of the spiral blades gradually decreases from the upper end to the lower end of the feed hopper, and the blade ends have a rounded transition structure.

[0011] Preferably, the bottom of the discharge hopper is provided with an inclined guide plate, and the lower end of the guide plate points towards the air inlet side of the exhaust fan.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This tea dryer with a flipping function uses a servo motor to drive the drum to rotate through pulleys and gears. With the limit support of the ring guide rail and guide wheel, the drum rotates stably, avoiding shaking that would affect the tea flipping effect. The spiral lifting plates inside the drum rotate with it, which can not only flip the tea to prevent it from piling up, but also push the tea axially, so that each tea leaf can fully contact the hot air and improve the uniformity of drying.

[0013] 2. This tea dryer with a flipping function uses an inlet fan and an electric heating element in the hot air chamber to generate hot air, which is then discharged from the outlet fan in the discharge hopper after passing through the barrel, forming a complete hot air circulation, accelerating the dehydration of the tea. The rotating seal ensures the sealing of the barrel when it rotates, reducing heat loss and improving energy efficiency.

[0014] 3. This tea dryer with a flipping function uses a stepper motor to drive spiral blades in the feed hopper to push tea leaves, avoiding blockage and ensuring uniform feeding that matches the drying rhythm. The overall structure achieves automated tea drying through the coordinated operation of various parts, reducing labor costs while ensuring tea quality, making it suitable for mass production needs. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a tea drying machine with a flipping function according to the present invention; Figure 2 This is a schematic diagram of a tea drying machine with a flipping function according to the present invention; Figure 3 This is a cross-sectional schematic diagram of a tea drying machine with a flipping function according to the present invention; Figure 4 This is a cross-sectional schematic diagram of a tea drying machine with a flipping function according to the present invention.

[0016] Reference numerals in the attached diagram: 1. Base; 2. Servo motor; 3. Drive pulley; 4. Synchronous belt; 5. Driven pulley; 6. Rotating rod; 7. Gear; 8. Gear ring; 9. Barrel body; 10. Feed hopper; 11. Hot air chamber; 12. Discharge chamber; 13. Discharge fan; 14. Circular guide rail; 15. Guide wheel; 16. Stepper motor; 17. Spiral blade; 18. Lifting plate; 19. Inlet fan; 20. Electric heating element. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a tea drying machine with a flipping function, including a base 1, a servo motor 2 fixedly installed below the base 1, a drive pulley 3 fixedly installed on the output shaft of the servo motor 2, a rotating rod 6 rotatably installed above the base 1, a driven pulley 5 and a gear 7 fixedly installed on the rotating rod 6, and the drive pulley 3 and the driven pulley 5 are connected by a synchronous belt 4 through meshing transmission. Four grooved guide wheels 15 are fixedly installed on the top of the base 1. A barrel body 9 is set on the top of the base 1. Annular guide rails 14 are fixedly installed on the outer sides of both ends of the barrel body 9. The annular guide rails 14 are embedded in the grooves of the guide wheels 15. A gear ring 8 is fixedly installed on the outer periphery of the middle part of the barrel body 9. The gear ring 8 and the gear 7 mesh with each other. Lifting plates 18 are fixedly installed in a circular pattern inside the barrel body 9. The front end of the lifting plates 18 is spiral-shaped. When the equipment is started, the servo motor 2, which is fixedly installed below the base 1, starts to work. Its output shaft drives the fixedly installed drive pulley 3 to rotate synchronously. The drive pulley 3 transmits power to the driven pulley 5, which is fixedly installed on the rotating rod 6, through the synchronous belt 4 that meshes with it. This causes the driven pulley 5 to rotate synchronously with the drive pulley 3. Since the driven pulley 5 and the gear 7 are both fixed on the rotating rod 6, the rotating rod 6 rotates around its own axis under the drive of the driven pulley 5, which in turn drives the gear 7 to rotate synchronously. The gear 7 meshes with the gear ring 8, which is fixedly installed on the outer periphery of the middle part of the barrel 9, and finally transmits power to the barrel 9, driving the barrel 9 to rotate and providing the power basis for the tea leaves to turn. Four grooved guide wheels 15 are fixedly installed on the top of the base 1 and cooperate with the annular guide rails 14 fixedly installed on the outer sides of both ends of the barrel body 9. The annular guide rails 14 are embedded in the grooves of the guide wheels 15. When the barrel body 9 is rotated by the transmission of the gear 7 and the gear ring 8, the guide wheels 15 limit the annular guide rails 14 through the grooves, which not only supports the weight of the barrel body 9, but also ensures that the barrel body 9 rotates stably along its own axis, avoiding deviation or shaking. The lifting plates 18, which are fixedly installed in a circular pattern inside the barrel 9, rotate synchronously with the barrel 9. Since the front end of the lifting plate 18 is spiral, during the rotation, the lifting plate 18 will lift the tea leaves at the bottom of the barrel 9 upward. At the same time, the spiral front end will generate an axial pushing force on the tea leaves, so that the tea leaves will move slowly along the axis of the barrel 9 while being turned over, so as to achieve uniform distribution and full turning of the tea leaves in the barrel 9 and avoid local accumulation. Hot air chamber 11 and discharge chamber 12 are fixedly installed on both sides of the base 1. The two ends of the barrel 9 are rotatably connected to the hot air chamber 11 and the discharge chamber 12 through rotating seals, and the three are interconnected internally. An inlet fan 19 and an electric heating tube 20 are fixedly installed inside the hot air chamber 11. The electric heating tube 20 is located between the inlet fan 19 and the barrel 9. An outlet fan 13 is fixedly installed on the discharge chamber 12, and the outlet of the outlet fan 13 is open to the outside. The hot air chamber 11 and the discharge chamber 12, which are fixedly installed on both sides of the base 1, are rotatably connected to both ends of the barrel body 9 through a rotating seal, which ensures that the barrel body 9 can rotate freely and achieves mutual communication and sealing between the three parts. During the drying process, the inlet fan 19 inside the hot air chamber 11 is activated to draw outside air into the hot air chamber 11. The drawn-in air flows through the electric heating tube 20 located between the inlet fan 19 and the barrel body 9, and is heated by the electric heating tube 20 to form hot air. The hot air enters the barrel body 9 under the thrust of the inlet fan 19 and comes into full contact with the tea leaves that are turned over by the lifting plate 18 inside the barrel body 9, absorbing the moisture in the tea leaves. The humid and hot air carrying moisture flows into the discharge chamber 12 at the other end of the barrel 9, and is finally drawn out by the fan 13 fixedly installed on the discharge chamber 12 and discharged to the outside through the air outlet, forming a complete hot air cycle of air intake-heating-drying-exhausting, thus achieving the dehydration and drying of the tea leaves. A feed hopper 10 is fixedly installed above the hot air chamber 11. The lower end of the feed hopper 10 passes through the top of the hot air chamber 11 and extends to the inlet of the barrel body 9. A stepper motor 16 is fixedly installed inside the feed hopper 10. A spiral blade 17 is fixedly installed on the output shaft of the stepper motor 16. The outer edge of the spiral blade 17 is in contact with the inner wall of the feed hopper 10, and the end of the blade is close to the inlet of the barrel body 9. The tea leaves to be dried are fed into the upper end of the feed hopper 10 fixedly installed above the hot air chamber 11; the stepper motor 16 fixedly installed inside the feed hopper 10 is started, and its output shaft drives the fixedly installed spiral blade 17 to rotate; since the outer edge of the spiral blade 17 is in contact with the inner wall of the feed hopper 10, the rotating spiral blade 17 will push the tea leaves in the feed hopper 10 downward to avoid the tea leaves from clogging. The tea leaves are pushed through the lower end of the feed hopper 10, which passes through the top of the hot air chamber 11 and extends to the inlet of the barrel 9, and are transported into the barrel 9. Because the end of the spiral blade 17 is close to the inlet of the barrel 9, the tea leaves can directly enter the inside of the barrel 9 and be promptly received by the rotating lifting plate 18 and participate in the turning and drying process. The speed of the stepper motor 16 is adjustable to control the feeding speed and ensure that the feeding amount matches the drying efficiency.

[0022] Working principle: When in use, the tea leaves to be dried are put into the feed hopper 10. The stepper motor 16 drives the spiral blades 17 to push the tea leaves to the barrel 9. The servo motor 2 drives the rotating rod 6 to rotate through the active pulley 3, the synchronous belt 4, and the driven pulley 5. The gear 7 meshes with the gear ring 8 to make the barrel 9 rotate. The ring guide rail 14 slides along the groove of the guide wheel 15 to ensure stability. The lifting plate 18 inside the barrel 9 turns the tea leaves. The fan 19 in the hot air chamber 11 draws in air, which is heated into hot air by the electric heating tube 20 and enters the barrel 9 to dry the tea leaves. The hot and humid air enters the discharge chamber 12 and is discharged to the outside by the discharge fan 13, thus completing the tea drying process. The servo motor 2 drives the barrel body 9 to rotate through the pulley and gear transmission. With the limit support of the ring guide rail 14 and the guide wheel 15, the barrel body 9 is ensured to rotate stably and avoid shaking that would affect the tea leaf turning effect. The spiral lifting plate 18 inside the barrel body 9 rotates with it, which can not only turn the tea leaves to prevent them from piling up, but also push the tea leaves to move axially, so that each tea leaf can fully contact the hot air and improve the uniformity of drying. The hot air chamber 11 is equipped with a fan 19 and an electric heating tube 20 to generate hot air. After passing through the barrel 9, the hot air is discharged from the discharge chamber 12 by the fan 13, forming a complete hot air circulation, which accelerates the dehydration of tea leaves. The rotating seal ensures the sealing of the barrel 9 when it rotates, reduces heat loss, and improves energy efficiency. The stepper motor 16 inside the feed hopper 10 drives the spiral blades 17 to push the tea leaves, avoiding blockage and ensuring uniform feeding, matching the drying rhythm. The overall structure achieves automated tea drying through the collaboration of various parts, reducing labor costs while ensuring tea quality, and is suitable for mass production needs. Base 1: The overall structure is a rectangular frame, located at the bottom of the equipment. Its function is to serve as the basic support component of the equipment, bearing all parts such as the servo motor, rotating rod, guide wheel, hot air chamber, and discharge chamber, and ensuring the overall stability of the equipment. Servo motor 2: It is a cylindrical drive component, which is fixedly installed below the base 1. Its function is to provide rotational power and drive the drive pulley 3 to rotate through the output shaft. Drive pulley 3: It is a circular pulley structure and is fixedly installed on the output shaft of servo motor 2. Its function is to transmit the power of servo motor 2 to driven pulley 5 through synchronous belt 4. Synchronous belt 4: This is a ring-shaped transmission belt that is meshed between the driving pulley 3 and the driven pulley 5. Its function is to realize the power transmission between the driving pulley 3 and the driven pulley 5 and ensure that they rotate synchronously. Driven pulley 5: It is a circular pulley structure, fixedly mounted on the rotating rod 6. Its function is to receive the power transmitted by the synchronous belt 4 and drive the rotating rod 6 to rotate. Rotating rod 6: It is a cylindrical rod structure that is rotatably mounted above the base 1. Its function is to support the driven pulley 5 and the gear 7 and to transmit the rotational motion of the driven pulley 5 to the gear 7. Gear 7: It is a circular gear structure and is fixedly installed on the rotating rod 6. Its function is to mesh with the gear ring 8 to transmit the power of the rotating rod 6 to the barrel body 9 and drive the barrel body 9 to rotate. Gear ring 8: It is a ring gear structure, which is fixedly installed on the outer periphery of the middle part of the barrel body 9. Its function is to mesh with gear 7, receive the power transmitted by gear 7, and drive the barrel body 9 to rotate synchronously. Barrel 9: It is a cylindrical hollow cylinder, located above the base 1, with its two ends connected to the hot air chamber 11 and the discharge chamber 12 respectively. Its function is to serve as the main space for drying tea. It contains tea leaves and rotates them to turn them over, thus completing the drying process in conjunction with the hot air. Feed hopper 10: It has a funnel-shaped structure and is fixedly installed above the hot air chamber 11. Its function is to feed the tea leaves to be dried and guide the tea leaves into the barrel 9. Hot air chamber 11: It is a cavity composed of rectangular and cylindrical shapes. It is fixedly installed on one side of the base 1 and connected to one end of the barrel body 9. Its function is to provide a space for generating hot air, accommodate the fan 19 and the electric heating tube 20, and send the heated air into the barrel body 9. Discharge hopper 12: It is a rectangular or cylindrical cavity, which is fixedly installed on the other side of the base 1 and connected to the other end of the barrel 9. Its function is to receive the hot and humid air and dried tea leaves discharged from the barrel 9 and discharge the hot and humid air through the fan 13. Exhaust fan 13: It is a centrifugal fan structure, which is fixedly installed on the discharge bin 12. Its function is to extract the hot and humid air in the discharge bin 12 and discharge it to the outside, thereby promoting hot air circulation. Circular guide rail 14: It is a circular track structure with a specific cross-section. It is fixedly installed on the outer sides of both ends of the barrel body 9. Its function is to be embedded in the groove of the guide wheel 15 and cooperate with the guide wheel 15 to achieve stable rotation of the barrel body 9. Guide wheel 15: It is a circular wheel with grooves, and there are four of them. They are fixedly installed above the base 1. Their function is to accommodate the annular guide rail 14 through the grooves, support the barrel body 9 and guide it to rotate stably along the axis, and prevent the barrel body 9 from deviating. Stepper motor 16: This is a small drive motor, which is fixedly installed inside the feed hopper 10. Its function is to drive the spiral blades 17 to rotate and control the feeding speed of the tea leaves. Spiral blade 17: It has a spiral blade structure and is fixedly installed on the output shaft of the stepper motor 16. Its function is to push the tea leaves in the feed hopper 10 downward when rotating, so as to ensure that the tea leaves enter the barrel 9 evenly and stably and avoid clogging. Lifting plate 18: It is a plate-shaped structure with a spiral front end. It is fixedly installed along the inner circumference of the barrel 9. Its function is to lift and push the tea leaves when the barrel 9 rotates, so as to realize the flipping and axial movement of the tea leaves and ensure that the tea leaves are heated evenly. Inlet fan 19: It is a centrifugal fan structure, which is fixedly installed inside the hot air chamber 11. Its function is to draw outside air into the hot air chamber 11 and push the air through the electric heating tube 20 to form hot air that enters the barrel body 9. Electric heating element 20: It is a tubular heating component, which is fixedly installed inside the hot air chamber 11, between the inlet fan 19 and the barrel body 9. Its function is to generate heat after being powered on, and heat the air drawn in by the inlet fan 19 into hot air to provide a heat source for drying tea.

[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 with a turnover function, comprising a base (1), characterized in that: A servo motor (2) is fixedly installed below the base (1). A drive pulley (3) is fixedly installed on the output shaft of the servo motor (2). A rotating rod (6) is rotatably installed above the base (1). A driven pulley (5) and a gear (7) are fixedly installed on the rotating rod (6). The drive pulley (3) and the driven pulley (5) are connected by a synchronous belt (4) through meshing transmission. Four grooved guide wheels (15) are fixedly installed on the base (1). A barrel body (9) is provided on the base (1). Annular guide rails (14) are fixedly installed on the outer sides of both ends of the barrel body (9). The annular guide rails (14) are embedded in the grooves of the guide wheels (15). A gear ring (8) is fixedly installed on the outer periphery of the middle part of the barrel body (9). The gear ring (8) meshes with the gear (7). Lifting plates (18) are fixedly installed in a circular pattern inside the barrel body (9). The front end of the lifting plate (18) is spiral. Hot air chamber (11) and discharge chamber (12) are fixedly installed on both sides of the base (1). The two ends of the barrel body (9) are rotatably connected to the hot air chamber (11) and discharge chamber (12) through rotating seals, and the three are interconnected internally. An inlet fan (19) and an electric heating tube (20) are fixedly installed inside the hot air chamber (11). The electric heating tube (20) is located between the inlet fan (19) and the barrel body (9). An outlet fan (13) is fixedly installed on the discharge chamber (12). The outlet of the outlet fan (13) is open to the outside. A feed hopper (10) is fixedly installed above the hot air chamber (11). The lower end of the feed hopper (10) passes through the top of the hot air chamber (11) and extends to the inlet of the barrel body (9). A stepper motor (16) is fixedly installed inside the feed hopper (10). A spiral blade (17) is fixedly installed on the output shaft of the stepper motor (16). The outer edge of the spiral blade (17) is in contact with the inner wall of the feed hopper (10), and the end of the blade is close to the inlet of the barrel body (9).

2. The tea dryer with a turnover function according to claim 1, characterized in that: The four guide wheels (15) are arranged in a rectangular shape above the base (1), and correspond to the inner and outer sides of the annular guide rails (14) at both ends of the barrel body (9).

3. The tea dryer with a turnover function according to claim 2, characterized in that: The cross-section of the annular guide rail (14) is T-shaped, and the groove of the guide wheel (15) is adapted to the T-shaped guide rail to form an axial limiting structure.

4. The tea dryer with a turnover function according to claim 3, characterized in that: The lifting plates (18) are distributed at equal intervals along the inner wall of the barrel (9), and the spiral directions of adjacent lifting plates (18) are opposite.

5. The tea dryer with a turnover function according to claim 4, characterized in that: The rotary seal is a double-lip mechanical seal ring, with its stationary ring fixed to the ports of the hot air chamber (11) and the discharge chamber (12), and its rotating ring fixed to the outer wall of the end of the barrel body (9).

6. The tea dryer with a turnover function according to claim 5, characterized in that: The electric heating tube (20) is distributed circumferentially along the cross-section of the hot air chamber (11) and is positioned opposite to the air outlet of the inlet fan (19).

7. The tea dryer with a turnover function according to claim 6, characterized in that: The pitch of the spiral blade (17) gradually decreases from the upper end to the lower end of the feed hopper (10), and the blade end has a rounded transition structure.

8. The tea dryer with a turnover function according to claim 7, characterized in that: The bottom of the discharge hopper (12) is provided with an inclined guide plate, the lower end of which points to the air inlet side of the fan (13).

Images