Tea leaf drying device

Abstract

The utility model discloses a tea drying device, which relates to the field of drying and comprises a box body, a heating device is mounted at the upper part of the box body, and a chain plate is mounted in the box body; the feeding table is fixedly provided with a feeding hole of the box body; the feeding plate is rotationally mounted in the feeding table and is used for conveying tea leaves into the box body; the shifting part is rotationally mounted on the feeding table and is used for shifting the tea leaves; and the transverse rod is fixedly installed on the side wall of the feeding table and located on the front side of the material stirring part, a material guiding strip is fixedly installed at the bottom of the transverse rod, and when the tea leaves pass through the material guiding strip, the material stirring part stirs the tea leaves so that ventilation channels can be reserved between the tea leaves. According to the tea leaf drying device, the transverse rod, the material guiding strip and the material stirring part are arranged on the feeding table, under the action of the material guiding strip and the material stirring part, ventilation channels are reserved between tea leaves on the feeding plate, when the tea leaves fall on the chain plate, the ventilation channels are also reserved, the tea leaves are divided into a plurality of small areas to be dried, evaporation of water of the tea leaves can be accelerated, and the tea leaf drying efficiency is improved. And the tea leaf drying effect is improved.

Description

Technical Field

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

[0002] Black tea is a fully fermented tea, made through withering, rolling, fermentation, and drying processes. The drying process for black tea is divided into initial drying and re-drying. Initial drying, also known as rough drying, involves an air inlet temperature of 110-120℃, not exceeding 120℃. Initial drying can promptly stop enzymatic oxidation, quickly evaporate moisture, and reduce the effects of damp heat. It is generally advisable to dry it for 10-15 minutes. Re-drying, also known as full drying, involves a temperature of 85-95℃, not exceeding 100℃, and the drying time is generally advisable to dry it for 15-20 minutes.

[0003] Chain plate dryers are commonly used for drying black tea. In some less developed areas, manual louver dryers are still used. Chain plate dryers are more efficient and are gradually being adopted. During the initial drying, the tea leaves are typically spread to a thickness of 1-2 cm. However, because the tea leaves are spread across the entire chain plate (which has a dense network of air holes), the entire chain plate serves as the drying area, resulting in a relatively large drying area. Furthermore, the tea leaves can block the air holes, affecting the flow of hot air. For these reasons, the initial drying effect of tea is relatively poor, and the moisture evaporation of the tea leaves is slow. Utility Model Content

[0004] The main purpose of this utility model is to provide a tea drying device that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tea drying apparatus, comprising:

[0007] The box has a heating device installed on the upper part and a chain plate installed inside;

[0008] The feeding platform has a fixed feeding port with the box body installed.

[0009] The feed plate is rotatably installed inside the feed platform and is used to feed tea leaves into the box.

[0010] The feeding unit is rotatably mounted on the feeding platform and located on the upper side of the feeding plate, used to agitate the tea leaves;

[0011] A crossbar is fixedly installed on the side wall of the feeding platform and located in front of the feeding section. A guide strip is fixedly installed at the bottom of the crossbar. As the tea leaves pass through the guide strip, the feeding section moves the tea leaves to leave ventilation channels between them.

[0012] Furthermore, the feeding section includes:

[0013] A rotating shaft is rotatably mounted on the inner side wall of the feeding platform;

[0014] The feeding plate is fixedly installed on the rotating shaft. An opening is made on the feeding plate, which matches the guide bar.

[0015] Furthermore, the bottom of the guide bar is in contact with the upper side of the feed plate.

[0016] Furthermore, the guide strip has a rod-shaped structure, and the depth of the opening is greater than the thickness of the guide strip.

[0017] Furthermore, the guide bar has an arc-shaped structure, with its bottom edge directly below the rotation axis of the rotating shaft.

[0018] Furthermore, a heat exchange box is fixedly installed at the air inlet of the box. An exhaust pipe connected to the box is fixedly installed inside the heat exchange box. A heat-conducting plate is fixedly installed on the outside of the exhaust pipe. An air inlet channel connected to the air inlet is opened on the heat exchange box. When the air enters the box from the air inlet channel, it will be preheated.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention features a crossbar, guide bar, and feeding section on the feeding platform. The guide bar and feeding section create ventilation channels between the tea leaves on the feeding plate. When the tea leaves fall onto the chain plate, ventilation channels are also created, dividing the tea leaves into multiple small areas for drying. This accelerates the evaporation of moisture from the tea leaves and improves the drying effect. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present utility model;

[0022] Figure 2 This is a structural diagram of the box body and chain plate of this utility model;

[0023] Figure 3 This is a cross-sectional view of the present invention;

[0024] Figure 4 This is a structural diagram of the crossbar and guide bar of this utility model;

[0025] Figure 5 This is a side view of one structure of the crossbar and guide bar of this utility model;

[0026] Figure 6 This is another structural diagram of the crossbar and guide bar of this utility model;

[0027] Figure 7 This is a connection diagram of another structure of the crossbar and guide bar of this utility model;

[0028] Figure 8 This is a side view of another structure of the crossbar and guide bar of this utility model. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] Please refer to Figures 1-8. This embodiment provides a tea drying device, including a housing 1. The interior of the housing 1 is divided into two parts: an upper heating chamber and a lower drying chamber. A partition is fixedly installed between the two chambers. A fuel heater 2, preferably a diesel heater, is placed inside the heating chamber. The front end of the heating chamber is an air inlet located at the front of the housing 1. A hot air inlet communicating with the drying chamber is opened on the rear side of the heating chamber, allowing hot air to enter the drying chamber from the heating chamber.

[0031] The interior of the housing 1 is equipped with a chain plate 7. The installation of the chain plate 7 is the same as that of the existing chain plate dryer, which is existing technology and will not be described in detail here.

[0032] A feeding port is provided on the front side of the box 1, and a feeding platform is fixedly installed at the feeding port for placing tea leaves. The feeding platform is a box structure with an open top. A feeding plate 4 is rotatably installed inside the feeding platform. The structure of the feeding plate 4 is the same as that of the chain plate 7. Both the feeding plate 4 and the chain plate 7 are driven by a motor, which is the same as the existing chain plate dryer, and will not be described in detail here.

[0033] The feeding unit 5 is rotatably mounted on the inner wall of the feeding table and located above the feeding plate 4. The feeding unit 5 includes a rotating shaft 51, and a feeding plate 53 is fixedly mounted on the outer side of the rotating shaft 51. Figures 3-7 As shown, a motor is installed on the side wall of the feeding platform, and the output end of the motor is fixedly connected to the rotating shaft 51 for rotating the shaft 51. In this embodiment, a mounting frame is placed on the feeding platform, the motor is fixedly mounted on the mounting frame, and the rotating shaft 51 is rotatably mounted on the mounting frame. For details, please refer to the Shuangmu 6CH-20 type chain plate tea dryer.

[0034] A distance is maintained between the feeding plate 53 and the feeding plate 4. This distance is set according to actual usage requirements. During the initial drying of black tea (i.e., rough drying), the inlet air temperature is 110-120℃, not exceeding 120℃, and the tea leaf thickness is 1-2cm. The distance between the feeding plate 53 and the feeding plate 4 is 1-2cm. During the re-drying of black tea, the tea leaf thickness is 3-4cm. The distance between the feeding plate 53 and the feeding plate 4 is 3-4cm. When the feeding plate 53 rotates, it can move the tea leaves, ensuring that the thickness of the tea leaves on the feeding plate 4 meets the drying requirements.

[0035] like Figures 1-3 As shown, a crossbar 6 is fixedly installed on the inner wall of the feeding platform. The crossbar 6 is located in front of the feeding section 5. A guide bar 8 is fixedly installed at the bottom of the crossbar 6. There are two designs for the guide bar 8, as detailed below:

[0036] One of them is: such as Figure 4 and Figure 5 As shown, the guide bar 8 has a rod-shaped structure, preferably a triangular prism rod-shaped structure, and is perpendicular to the upper side of the feed plate 4. The bottom of the guide bar 8 is attached to the upper side of the feed plate 4, but not connected. The feed plate 53 has an opening 52 that matches the guide bar 8, which is located along the direction of rotation of the rotating shaft 51 (e.g., ...). Figure 5 The direction of the dashed line and arrow (the dashed line represents the movement trajectory at the edge of the feeding plate 53) is indicated. The guide bar 8 is located in front of the rotating shaft 51. Because the guide bar 8 has a rod-like structure, the depth of the opening 52 is greater than the thickness of the guide bar 8, specifically as follows... Figure 5 As shown, when the rotating shaft 51 rotates with the material feeding plate 53, the guide bar 8 can pass through the opening 52 to ensure the normal rotation of the material feeding plate 53.

[0037] like Figure 5As shown, during the initial drying of tea leaves, the tea leaves are poured onto the bottom of the feeding platform, and the tea leaves are carried along the feeding plate 4. Since the guide bar 8 is relatively close to the rotating shaft 51, when the feeding plate 4 carries the tea leaves, the tea leaves will move to both sides of the guide plate 8 under the obstruction and guidance of the guide plate 8, and the tea leaves will slightly accumulate on both sides of the guide plate 8. At the same time, the rotating shaft 51 drives the deflecting plate 53 to rotate. The deflecting plate 53 passes over the outside of the guide plate 8 and can deflect the tea leaves outward. Meanwhile, the accumulated tea leaves are kept at the set height under the deflecting action of the deflecting plate 53. Because the guide plate 8 obstructs and guides the tea leaves, there are no tea leaves or materials obstructing the feed plate 4 after it passes through. This creates a ventilation channel (both the chain plate 7 and the feed plate 4 have air vents, which are not obstructed by tea leaves, forming a ventilation channel). This allows hot air to pass through the feed plate 4 more effectively. When the tea leaves are conveyed into the drying chamber, they fall onto the chain plate 7 under their own weight. In principle, because the tea leaves in the drying chamber are subject to their own weight, they will fall vertically. This means that ventilation channels will also exist between the tea leaves falling onto the chain plate 7. However, because there is also flowing hot air inside the drying chamber, some tea leaves will be blown away when they fall onto the chain plate 7, and a small amount of tea leaves will fall into the ventilation channel. However, the amount of tea leaves in the channel is relatively small and does not affect the ventilation effect of the channel.

[0038] Because the tea leaves have ventilation channels on the chain plate 7, the hot air can circulate better inside the drying chamber, and the hot air can pass through the chain plate 7 more effectively. In particular, the channels divide the tea leaves on the chain plate 7 into several individual portions, resulting in a better and faster drying effect. This enables rapid drying of tea leaves, and is especially suitable for quickly evaporating moisture during the initial drying of black tea, reducing the need for moist heat and improving the drying effect by about 10%.

[0039] In this design, since the depth of the opening 52 is greater than the thickness of the guide bar 8, when too much tea is placed inside the feeding platform, the tea will accumulate in front of the feeding section 5, that is, at the guide bar 8. When the feeding plate 53 rotates, some tea will fall from the opening 52 down to the back of the guide bar 8, occupying the ventilation channel. Therefore, too much tea should not be placed inside.

[0040] Another option: such as Figure 6-8 As shown, the guide strip 8 has an arc-shaped structure, such as a semi-circular structure. The bottom of the guide strip 8 is directly below the rotation axis of the rotating shaft 51, and the depth of the opening 52 is the same as the thickness of the guide strip 8. When the feeding plate 53 rotates, the opening 52 can fit against the movement of the guide strip 8, with a small gap between them, preventing tea leaves from falling out. The bottom of the arc-shaped guide strip 8 is directly below the rotation axis of the rotating shaft 51, such as... Figure 8As shown, when the feeding plate 53 moves the tea leaves, it ensures that the tea leaves will not enter the ventilation channel behind the guide bar 8.

[0041] In this design, a connecting block 9 is fixedly installed on the top of the guide bar 8, and the connecting block 9 is fixedly connected to the crossbar 6.

[0042] In both of the above schemes, the height of the crossbar 6 should be greater than the movement trajectory of the material feeding plate 53 to avoid the crossbar 6 affecting the rotation of the material feeding plate 53.

[0043] In a further embodiment, such as Figures 1-3 As shown, a heat exchange box 3 is also fixedly installed at the air inlet of the box 1. An exhaust pipe communicating with the box 1 is fixedly installed inside the heat exchange box 3. A motor is fixedly installed at the port of the exhaust pipe 2. An exhaust fan is fixedly installed on the output shaft of the motor. The exhaust fan is driven by the motor to rotate and exhaust air to the outside, expelling the moisture inside the box 1. A heat-conducting plate is fixedly installed on the outside of the exhaust pipe. The heat-conducting plate is located inside the heat exchange box 3. The hot air discharged from the exhaust pipe will heat the heat-conducting plate. An air inlet channel communicating with the air inlet is opened on the heat exchange box 3. When the air enters the box 1 from the air inlet channel, it passes through the heat-conducting plate, and the heat-conducting plate will preheat the air.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A tea drying device, characterized in that, include: Box (1), heating device (2) is installed on the upper part of the box (1), and chain plate (7) is installed inside; The feeding platform has a fixed feeding port with a box (1); The feed plate (4) is rotatably installed inside the feed platform for conveying tea leaves into the box (1); The feeding part (5) is rotatably installed on the feeding platform and located on the upper side of the feeding plate (4) for feeding tea leaves; A crossbar (6) is fixedly installed on the side wall of the feeding platform and located in front of the feeding part (5). A guide strip (8) is fixedly installed at the bottom of the crossbar (6). While the tea leaves pass through the guide strip (8), the feeding part (5) moves the tea leaves so that ventilation channels are left between the tea leaves.

2. The tea drying device according to claim 1, characterized in that: The feeding section (5) includes: A rotating shaft (51) is rotatably mounted on the inner side wall of the feeding platform; A feeding plate (53) is fixedly installed on a rotating shaft (51). An opening (52) is opened on the feeding plate (53), and the opening (52) matches the guide bar (8).

3. The tea drying device according to claim 2, characterized in that: The bottom of the guide bar (8) is attached to the upper side of the feed plate (4).

4. The tea drying device according to claim 3, characterized in that: The guide bar (8) has a rod-shaped structure, and the depth of the opening is greater than the thickness of the guide bar (8).

5. A tea drying device according to claim 3, characterized in that: The guide bar (8) has an arc-shaped structure, and the bottom of the guide bar (8) is directly below the rotation axis of the rotating shaft (51).

6. The tea drying device according to claim 1, characterized in that: A heat exchange box (3) is also fixedly installed at the air inlet of the box (1). An exhaust pipe communicating with the box (1) is fixedly installed inside the heat exchange box (3). A heat-conducting plate is fixedly installed on the outside of the exhaust pipe. An air inlet channel is provided at the top, which is connected to the air inlet. When air enters the interior of the housing (1) through the air inlet channel, It will preheat the air.

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