A drying device for black tea production

Abstract

This utility model relates to the field of tea production technology, and more particularly to a drying device for black tea production, comprising: a shell, a primary drying trough, a secondary drying trough, and a rotating rod; ventilation holes are opened at the bottom of the primary drying trough and the secondary drying trough; the secondary drying trough is located at the bottom of the shell; the primary drying trough is located inside the shell; the primary drying trough is located above the secondary drying trough; the rotating rod is connected to the primary drying trough; the rotating rod can be connected to a motor; the primary drying trough can rotate relative to the secondary drying trough. A single drying trough, after processing one step, needs to be transported to another step, resulting in frequent transport of tea leaves, making the tea drying process cumbersome. Compared to the prior art, this utility model sets the primary drying trough and the secondary drying trough on the same vertical line, and the primary drying trough can be rotated by a motor and a rotating rod. After the tea leaves are initially dried, the rotating rod drives the primary drying trough to flip, allowing the material in the primary drying trough to fall into the secondary drying trough, eliminating the need for manual removal and re-transport, making it more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of tea production technology, and in particular to a drying device for black tea production. Background Technology

[0002] In tea production, drying is a crucial step in the processing and plays a vital role in the quality of tea. With the continuous growth of the tea market and consumers' increasing demands for tea quality, tea drying technology is constantly developing and innovating. Advances in drying technology not only help improve drying efficiency but also better preserve the aroma and nutrients of tea, thereby enhancing its overall quality. Different types of tea, due to their different characteristics, have different requirements for drying processes and equipment. For example, green tea emphasizes preserving its fresh color and aroma, while black tea emphasizes its post-fermentation flavor and taste; therefore, targeted drying technologies are needed to meet their specific needs.

[0003] In traditional black tea production, drying is typically done in a single drying trough. The common practice is to place the tea leaves in a fixed drying trough and dry them using methods such as hot air circulation. Some troughs have heating devices at the bottom, using upward airflow to remove moisture from the tea leaves; others use external hot air equipment to blow hot air into the drying trough to achieve the drying purpose.

[0004] However, a single drying trough needs to transport the tea leaves to another process after processing one step, which requires frequent transport of the tea leaves and makes the tea drying process quite troublesome. Utility Model Content

[0005] In view of the technical problems of the prior art, this utility model provides a drying device for black tea production.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A drying device for black tea production includes: a shell, a primary drying trough, a secondary drying trough, and a rotating rod; ventilation holes are opened at the bottom of the primary drying trough and the secondary drying trough; the secondary drying trough is located at the bottom of the shell; the primary drying trough is located inside the shell; the primary drying trough is located above the secondary drying trough; a rotating motor is located on the outer wall of the shell; the rotating motor is coaxially connected to the primary drying trough through the rotating rod; the primary drying trough can rotate relative to the secondary drying trough.

[0008] Furthermore, there are several primary drying tanks; the primary drying tanks are set along the side of the shell away from the primary drying tank to near the bottom of the primary drying tank.

[0009] Furthermore, it also includes: a flow guide block; the flow guide block is disposed inside the shell; the flow guide block is disposed on the side of the foot drying tank away from the initial drying tank.

[0010] Furthermore, it also includes: a ventilation duct; the ventilation duct is connected to the guide block; the guide block has a guide hole; the guide hole faces the foot dry trough.

[0011] Furthermore, it also includes: a vibrating plate; a foot drying groove placed on the vibrating plate; a through hole on the vibrating plate to allow airflow from the ventilation pipe to pass through; and the vibrating plate can be connected to a vibration motor.

[0012] Furthermore, the housing includes: an exhaust pipe and a return pipe; the exhaust pipe is located at the top of the housing; one end of the return pipe is connected to the exhaust pipe, and the other end is connected to the ventilation pipe.

[0013] Furthermore, a fan-shaped groove is opened on the air outlet pipe; a moisture-absorbing wheel is provided in the shell inside the air outlet pipe; one side of the moisture-absorbing wheel extends into the fan-shaped groove; the moisture-absorbing wheel can rotate relative to the fan-shaped groove.

[0014] The beneficial effects of this utility model are: by setting the initial drying trough and the final drying trough on the same vertical line, and by rotating the motor rod to make the initial drying trough rotatable, after the tea leaves are initially dried, the initial drying trough can be rotated by the rotating rod to make the material in the initial drying trough fall into the final drying trough, so that there is no need to manually remove and transport it, which is more convenient to use. Attached Figure Description

[0015] Figure 1 : A schematic diagram of the structure of this utility model;

[0016] Figure 2 : Partial structural schematic diagram of this utility model;

[0017] Figure 3 : Partial structural cross-sectional view of this utility model.

[0018] In the diagram: 1. Shell; 11. Air outlet pipe; 111. Sector-shaped groove; 12. Return pipe; 2. Initial drying groove; 3. Sufficient drying groove; 4. Rotating motor; 5. Guide block; 51. Guide hole; 6. Ventilation pipe; 7. Vibrating plate. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] according to Figure 1-3 This utility model provides a drying device for black tea production, including: shell 1, initial drying trough 2, final drying trough 3, rotating motor 4, guide block 5, ventilation pipe 6, and vibrating plate 7;

[0021] Ventilation holes are opened at the bottom of the initial drying trough 2 and the foot drying trough 3; the foot drying trough 3 is set at the bottom of the shell 1; the initial drying trough 2 is set inside the shell 1; the initial drying trough 2 is set above the foot drying trough 3; the rotating motor 4 is set on the outer wall of the shell 1; the rotating motor 4 is coaxially connected to the initial drying trough 2 through a rotating rod; the initial drying trough 2 can rotate relative to the foot drying trough 3.

[0022] When drying black tea leaves, first place the tea leaves into the initial drying trough 2 and spread them out to distribute them as evenly as possible. An observation window can be opened on the shell 1 to observe the state of the tea leaves inside the shell 1. After the initial drying is completed, when it is necessary to transfer the tea leaves to the final drying trough 3, the rotating motor 4 can be started to rotate the rotating rod, which will cause the initial drying trough 2 to flip over, so that the tea leaves in the initial drying trough 2 fall into the final drying trough 3, so that the tea leaves can be transferred quickly. Both the initial drying trough 2 and the final drying trough 3 have ventilation holes at the bottom, so that hot air can be introduced from the bottom of the final drying trough 3, so that the hot air passes through the final drying trough 3 and then through the initial drying trough 2. The introduction of hot air at this position can heat and dry both the final drying trough 3 and the initial drying trough 2.

[0023] The number of initial drying troughs 2 is several; the initial drying troughs 2 are set along the side of the shell 1 away from the foot drying trough 3 to near the bottom of the foot drying trough 3. A guide block 5 is set inside the shell 1; the guide block 5 is set on the side of the foot drying trough 3 away from the initial drying trough 2. A ventilation pipe 6 is connected to the guide block 5; the guide block 5 has a guide hole 51; the guide hole 51 faces the foot drying trough 3. The foot drying trough 3 is placed on a vibrating plate 7; the vibrating plate 7 has a through hole, allowing the airflow from the ventilation pipe 6 to pass through; the vibrating plate 7 can be connected to a vibrating motor. Between the initial drying and foot drying, the tea leaves need to be cooled. At this time, the door on one side of the shell can be opened to connect the initial drying trough 2 with the outside, then the tea leaves are turned over, and at the same time, natural wind at a certain speed is introduced from the ventilation pipe 6 to accelerate the cooling process. After a certain period of time, the foot drying process can continue.

[0024] In the initial drying process of the initial drying trough 2, the tea leaves need to be spread thinly, while in the full drying process of the full drying trough 3, they need to be spread thickly, causing a mismatch between the two troughs. To address this, this utility model provides multiple initial drying troughs 2, allowing the tea leaves to be spread thinly onto the initial drying troughs 2 first, and then several tea leaves from the initial drying troughs 2 fall into the full drying trough 3. When setting up the initial drying troughs 2, a certain distance should be maintained between each initial drying trough 2 to prevent the initial drying trough 2 from hitting other initial drying troughs 2 when rotating. When rotating, the uppermost initial drying trough 2 should rotate first, allowing the tea leaves in it to fall into the next layer of initial drying trough 2, and then the next layer of initial drying trough 2 should rotate, and so on, until all the tea leaves in the initial drying troughs 2 fall into the full drying trough 3. If rotating synchronously, the distance between the upper and lower initial drying troughs 2 is closest when they rotate 90°, requiring the distance between the rotating rods of the two initial drying troughs 2 to be greater than the sum of half the length of the two initial drying troughs 2. By rotating sequentially, one rotates 90° while the other remains stationary, it is only necessary to ensure that the distance between the rotating rods of the two initial drying troughs 2 is greater than half the length of one initial drying trough 2, thus saving space. Furthermore, the sequential falling of tea leaves reduces the maximum impact force received upon falling, thus minimizing damage. A vibrating plate 7 is installed at the bottom of the drying trough 3, and the drying trough 3 is placed on the vibrating plate 7. When the vibrating plate 7 vibrates, it causes the drying trough 3 to vibrate to a certain extent, so that the material poured into the drying trough 3 from the initial drying trough 2 will be more evenly distributed due to vibration, ensuring even heating during subsequent drying. The guide block 5 is located on the side of the vibrating plate 7 away from the drying trough 3, with its through-hole facing the vibrating plate 7. The guide block 5 is connected to the ventilation pipe 6, so that the hot air entering the ventilation pipe 6 first enters the guide block 5, and then is blown out through the guide hole 51 of the guide block 5. This changes the direction of the hot air, blowing it from bottom to top towards the vibrating plate 7, and then through the through-hole of the vibrating plate 7 into the drying trough 3, and then into the initial drying trough 2. This allows the hot air to heat and dry the material in both stages without changing its direction.

[0025] The housing 1 includes an exhaust pipe 11 and a return pipe 12. The exhaust pipe 11 is located at the top of the housing 1. One end of the return pipe 12 is connected to the exhaust pipe 11, and the other end is connected to the ventilation pipe 6. A fan-shaped groove 111 is formed on the exhaust pipe 11. A moisture-absorbing wheel is provided in the housing 1 inside the exhaust pipe 11. One side of the moisture-absorbing wheel extends into the fan-shaped groove 111. The moisture-absorbing wheel can rotate relative to the fan-shaped groove 111.

[0026] After the hot air dries the material, it carries away some moisture and enters the exhaust pipe 11. The hot air still retains heat when it enters the exhaust pipe 11, and direct discharge would be wasteful. This invention includes a return pipe 12, whose two ends are connected to the exhaust pipe 11 and the ventilation pipe 6, respectively. This allows the hot air entering the exhaust pipe 11 to flow into the return pipe 12 and then back into the ventilation pipe 6, enabling the hot air to be reused, thus increasing heat utilization and reducing heat waste. However, the hot air drying process removes moisture from the material. If this moisture is not treated, the returned hot air will have high humidity, affecting the drying effect of the tea. This invention features a moisture-absorbing wheel inside the air outlet pipe 11. The moisture-absorbing wheel is a Monte Carlo wheel, which includes a honeycomb wheel and a drive device. The honeycomb wheel contains moisture-absorbing materials such as lithium chloride. When hot air passes through the honeycomb wheel, the moisture is absorbed by the lithium chloride and turns into lithium chloride crystal hydrate. The hot air then passes through the moisture-absorbing wheel and flows back into the return pipe 12 to avoid excessive humidity in the returned hot air. Simultaneously, the honeycomb-shaped rotating wheel is connected to a drive device, such as a motor driving a rotating shaft and a reducer to rotate, and then a sprocket, gears, and other structures driving the honeycomb-shaped rotating wheel to rotate, maintaining a certain speed. When the lithium chloride in the honeycomb-shaped rotating wheel absorbs a certain amount of moisture, it will tend to be saturated and difficult to continue absorbing moisture. However, by driving the honeycomb-shaped rotating wheel to rotate, the saturated part can be rotated. One side of the honeycomb-shaped rotating wheel extends into the fan-shaped groove 111, allowing the saturated part to rotate into that place. By connecting the fan-shaped groove to the inside of the shell 1, a certain amount of hot air can pass through it, providing a certain amount of heat. A heater is then placed in the fan-shaped groove to raise the temperature inside the fan-shaped groove. When the temperature is high, the moisture in the lithium chloride crystal hydrate will be evaporated, so that the water vapor is carried out and blown out of the shell 1. At the same time, the state of the lithium chloride is restored, and it can continue to absorb moisture outside the fan-shaped groove while rotating, so that the moisture-absorbing rotating wheel can be reused without frequent replacement and treatment.

[0027] In summary, this utility model sets the initial drying trough and the final drying trough on the same vertical line. At the same time, the initial drying trough can be rotated by rotating the motor rod. After the tea leaves are initially dried, the initial drying trough can be rotated by rotating the rod, so that the material in the initial drying trough falls into the final drying trough without the need for manual removal and transportation, which is more convenient to use.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A drying apparatus for black tea production, characterized by: include: Shell, initial drying tank, final drying tank, rotating motor; Ventilation holes are provided at the bottom of the initial drying tank and the final drying tank; The foot groove is located at the bottom end of the shell; The initial drying tank is disposed inside the shell: The initial drying trough is located above the foot drying trough; The rotating motor is mounted on the outer wall of the housing; The rotating motor is coaxially connected to the initial drying trough via a rotating rod; The initial drying trough can rotate relative to the final drying trough.

2. The drying apparatus for black tea production as described in claim 1, characterized in that: The number of initial drying tanks is several; The initial drying groove is set along the side of the shell away from the foot drying groove to near the bottom of the foot drying groove.

3. The drying apparatus for black tea production as described in claim 1, characterized in that: Also includes: Guide block; The flow guide block is disposed inside the housing; The guide block is located on the side of the foot drying trough away from the initial drying trough.

4. The drying apparatus for black tea production as described in claim 3, characterized in that: Also includes: ventilation ducts; The ventilation duct is connected to the guide block; The flow guide block has flow guide holes; The flow guide hole faces the foot groove.

5. A drying apparatus for black tea production as described in claim 4, characterized in that: Also includes: vibrating plate; The foot drying groove is placed on the vibration plate; The vibrating plate has through holes, allowing the airflow from the ventilation pipe to pass through; The vibrating plate can be connected to a vibrating motor.

6. A drying apparatus for black tea production as described in claim 4, characterized in that: The housing includes: an outlet pipe and a return pipe; The air outlet pipe is located at the top of the housing; One end of the return pipe is connected to the air outlet pipe, and the other end is connected to the ventilation pipe.

7. A drying apparatus for black tea production as described in claim 6, characterized in that: The air outlet pipe has a fan-shaped groove; The housing is equipped with a moisture-absorbing wheel inside the air outlet pipe; One side of the moisture-absorbing wheel extends into the fan-shaped groove; The moisture-absorbing wheel can rotate relative to the sector groove.

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