Continuous tea drying equipment

Abstract

The utility model discloses a continuous tea drying equipment in the technical field of tea drying, including main body mechanism and reciprocating conveying device, main body mechanism includes frame, feed hopper, discharge gate and at least three different temperature's drying air inlet, reciprocating conveying device sets up in the frame, including a plurality of net board units of staggered layering, wherein, odd layer, even layer's net board unit is connected respectively in synchronization, and each is driven through the drive part of setting on the frame to convey tea to the next layer net board unit, and this drying equipment passes through setting the reciprocating conveying device of layering, and through multilayer net board unit carries out layer by layer turn back conveying, only needs to set three different temperature's drying air inlet to form the drying process of multiple cold -hot air alternation, is favorable for the improvement of taste, and odd layer / even layer's net board unit is opposite vibration and conveys tea, and effectively reduced the shaking amplitude of equipment whole.

Description

Technical Field

[0001] This utility model relates to the field of tea drying, specifically to a continuous tea drying equipment. Background Technology

[0002] Tea drying is a key step in tea making. Its purpose is to remove excess moisture from the tea leaves, fix the aroma, prevent mold, and extend the shelf life. The process usually involves spreading the tea leaves, which have been withered or rolled, evenly, and then heating them with hot air or charcoal fire, controlling the temperature and time. During this process, the tea leaves are turned over to ensure even heating until the moisture content is reached. To improve the taste, the current process often uses alternating hot and cold temperatures for drying.

[0003] This drying method has poor continuity and low production efficiency. Therefore, existing technologies have further developed large-scale tea drying equipment, which generally adopts a continuous drying method. That is, the tea is continuously and slowly conveyed through a vibrating screen, and then hot air is vertically introduced into the conveyor line for drying. The screen of this drying equipment is prone to continuous shaking when vibrating, and it occupies a large space and is difficult to form a drying condition with alternating hot and cold temperatures. Utility Model Content

[0004] The purpose of this invention is to provide a continuous tea drying equipment that solves the problem of existing equipment constantly shaking and making it difficult to create alternating hot and cold drying conditions.

[0005] This utility model achieves the above objectives through the following technical solutions: A continuous tea drying equipment, including The main structure includes a frame, a feed hopper, a discharge port, and at least three drying air inlets at different temperatures; The reciprocating conveying device is set within a frame and includes several staggered mesh plate units. The odd-numbered and even-numbered mesh plate units are synchronously connected and driven by a drive unit set on the frame to convey tea leaves to the next mesh plate unit.

[0006] As a preferred embodiment of this utility model, the frame is provided with a skin, and one side surface is provided with double doors. The skin helps to constrain airflow, and the double doors are used for cleaning and maintenance.

[0007] As a preferred embodiment of this utility model, the frame is provided with a first guide plate corresponding to each drying air inlet, the mesh plate unit is provided with a second guide plate, and the bottom of the frame is provided with a plurality of exhaust ports. The first guide plate is used to guide the air from each drying air inlet to the corresponding exhaust port. By setting the guide plate, the airflow of the drying air inlets at different temperatures is constrained, making it as perpendicular as possible to the mesh plate unit. The airflow passes through multiple mesh plate units, realizing the drying process of tea leaves with multiple temperature alternations.

[0008] As a preferred embodiment of this utility model, the drying equipment also includes a return air duct for collecting the airflow from the exhaust vent and returning it to the drying air inlet. After the hot air is recovered, it returns to the drying air inlet and mixes with the fresh air to continue drying. This is beneficial for improving heat utilization efficiency and reducing energy consumption. In addition, the tea aroma in the airflow repeatedly passes through the tea leaves, which helps to maintain the tea aroma.

[0009] As a preferred embodiment of this utility model, the side surfaces of the odd-layer / even-layer mesh plate units are provided with fixing members so that the odd-layer / even-layer mesh plate units form a vibrating whole. Each vibrating whole is driven to vibrate at one end by a driving part, and the other end is movably connected to the frame. This solution, by setting up opposing vibrating wholes, helps to cancel out vibrations and reduce the shaking of the equipment.

[0010] In a preferred embodiment of this utility model, the driving unit is an eccentric shaft driving unit, and the other end of the vibrating whole is movably connected to the frame through a rocker arm. The eccentric shaft driving unit is driven to rotate by an external motor, thereby driving the vibrating whole to vibrate.

[0011] In a preferred embodiment of this utility model, the driving unit is a linear driving unit, and a roller is provided at the other end of the vibrating whole. A track corresponding to the roller is provided on the frame. This embodiment uses a cylinder as a linear driving unit to perform fast push and slow return to transport tea leaves forward.

[0012] The beneficial effects of this utility model are as follows: by setting up a stacked reciprocating conveying device, the multi-layer mesh plate unit is used for layer-by-layer folding and conveying. Only three drying air inlets with different temperatures are needed to form a drying process with alternating hot and cold air, which is beneficial to improving the taste. In addition, the odd-numbered / even-numbered mesh plate units vibrate and convey the tea leaves in opposite directions, which effectively reduces the overall shaking amplitude of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the overall vibration structure of this utility model; Figure 4 For the present utility model Figure 3 Enlarged view of the structure of section A in the middle; Figure 5 This is a schematic diagram of the second embodiment of the present invention; In the diagram: 1. Main structure; 11. Frame; 12. Double door; 13. Feed hopper; 14. Drying air inlet; 15. Exhaust outlet; 16. Return air duct; 17. Discharge outlet; 18. First guide plate; 19. Track; 2. Reciprocating conveyor; 21. Mesh plate unit; 22. Eccentric shaft drive unit; 23. Fixing component; 24. Rocker arm; 25. Second guide plate; 26. Roller; 27. Linear drive unit. Detailed Implementation

[0014] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0015] Example 1 like Figure 1-4 As shown, a continuous tea drying equipment includes a main body 1 and a reciprocating conveyor 2. The main body 1 includes a frame 11, a feed hopper 13, a discharge port 17, and at least three drying air inlets 14 at different temperatures. The reciprocating conveyor 2 is disposed within the frame 11 and includes a plurality of staggered mesh plate units 21. Odd-numbered and even-numbered mesh plate units 21 are synchronously connected and driven by a drive unit disposed on the frame 11 to convey tea leaves to the next mesh plate unit 21. Specifically, the mesh plate unit 21 is as follows: Figure 4 As shown, it consists of a frame and an inner mesh. The length of the mesh is shorter than the length of the frame so that the tea leaves can fall to the next layer of mesh unit 21 after being conveyed to the end of the frame.

[0016] This solution uses a stacked reciprocating conveyor 2 to convey tea leaves layer by layer through a multi-layer mesh plate unit 21. Only three drying air inlets 14 with different temperatures are needed to form a drying process with alternating hot and cold air, which helps to improve the taste. In addition, the odd-numbered / even-numbered mesh plate units 21 vibrate and convey tea leaves in opposite directions, which effectively reduces the overall shaking amplitude of the equipment.

[0017] Preferably, the frame 11 is provided with a skin, and one side surface is provided with a double door 12. The skin helps to constrain airflow, and the double door 12 is used for cleaning and maintenance.

[0018] Preferably, the frame 11 is provided with a first guide plate 18 corresponding to each drying air inlet 14, and the mesh plate unit 21 is provided with a second guide plate 25. The bottom of the frame 11 is provided with a number of exhaust ports 15. The first guide plate 18 is used to guide the air from each drying air inlet 14 to the corresponding exhaust port 15. By setting the guide plate, the airflow of the drying air inlets 14 at different temperatures is constrained, making it as perpendicular as possible to the mesh plate unit 21. The airflow passes through multiple mesh plate units 21, realizing the drying process of tea leaves with multiple temperature alternations. Each mesh plate unit 21 is provided with a second guide plate 25. The second guide plate 25 can be made of food-grade silicone sheet, which can withstand possible impacts during the vibration of the mesh plate unit 21. The guide plate reduces hot air turbulence to ensure that there are three different temperature ranges within the equipment. The second guide plate 25 can be installed below the frame of each mesh plate unit 21. Opposing oblique iron plates are welded below the frame, and the second guide plate 25 is fixed to the oblique iron plates with anti-reverse screws.

[0019] Preferably, the drying equipment also includes a return air duct 16, which is used to collect the airflow from the exhaust port 15 and return it to the drying air inlet 14. After the hot air is recovered, it returns to the drying air inlet 14 and mixes with fresh air to continue drying. This is beneficial to improving heat utilization efficiency and reducing energy consumption. Moreover, the tea aroma in the airflow passes through the tea leaves repeatedly, which is beneficial to maintaining the tea aroma. It should be noted that during implementation, a proportional flow valve can be set to adjust the hot air recovery ratio as needed.

[0020] Preferably, the odd-layer / even-layer mesh plate unit 21 is provided with a fixing member 23 on its side surface so that the odd-layer / even-layer mesh plate unit 21 forms a vibrating whole. Each vibrating whole is driven to vibrate at one end by a driving part and movably connected to the frame 11 at the other end. This solution, by setting up opposing vibrating wholes, helps to cancel vibration and reduce the shaking of the equipment.

[0021] Furthermore, the driving unit is an eccentric shaft driving unit 22, and the other end of the vibrating whole is movably connected to the frame 11 through a rocker arm 24. The eccentric shaft driving unit 22 is driven to rotate by an external motor, thereby driving the vibrating whole to vibrate.

[0022] Detailed implementation: Tea leaves enter from the feed hopper 13 and the first layer of mesh plate unit 21. Under the vibration mode of fast advance and slow retreat of the whole vibration system, the tea leaves are conveyed forward. After being conveyed to the end of the mesh plate unit 21, they fall into the next layer of mesh plate unit 21. They are continuously conveyed back and forth in this way. During the conveying process, the drying air inlet 14 introduces hot and cold air of different temperatures. The tea leaves are dried by alternating hot and cold air during the back and forth conveying, which helps to improve the taste. Finally, the tea leaves fall into the processing outlet 17 and are discharged, completing the drying process. In addition, the mesh of the mesh plate unit 21 can be pressed into fine toothed stripes perpendicular to the direction of movement, which can achieve the effect of rolling and shaping the tea leaves.

[0023] Example 2 like Figure 5 As shown, unlike Embodiment 1, the driving unit in this embodiment is a linear driving unit 27, and a roller 26 is provided at the other end of the vibrating whole. A track 19 corresponding to the roller 26 is provided on the frame 11. In this embodiment, a cylinder is set as the linear driving unit 27 to perform fast push and slow return to transport tea leaves forward.

[0024] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A continuous tea drying equipment, characterized in that, include The main structure (1) includes a frame (11), a feed hopper (13), a discharge port (17), and at least three drying air inlets (14) at different temperatures. The reciprocating conveying device (2) is set inside the frame (11) and includes several staggered mesh plate units (21). The odd-numbered and even-numbered mesh plate units (21) are synchronously connected and driven by the drive unit set on the frame (11) to convey tea leaves to the next layer of mesh plate unit (21).

2. The continuous tea drying equipment according to claim 1, characterized in that, The frame (11) is provided with a skin, and one side surface is provided with double doors (12).

3. The continuous tea drying equipment according to claim 1, characterized in that, The frame (11) is provided with a first guide plate (18) corresponding to each drying air inlet (14), and a second guide plate (25) is provided on the mesh plate unit (21). The bottom of the frame (11) is provided with a number of exhaust ports (15). The first guide plate (18) is used to guide the air from each drying air inlet (14) into the corresponding exhaust port (15).

4. The continuous tea drying equipment according to claim 3, characterized in that, It also includes a return air duct (16) for collecting the airflow from the exhaust port (15) and returning it to the drying air inlet (14).

5. A continuous tea drying device according to claim 1, characterized in that, The odd-layer / even-layer mesh plate unit (21) is provided with a fastener (23) on its side surface so that the odd-layer / even-layer mesh plate unit (21) forms a vibrating whole, wherein one end of each vibrating whole is driven to vibrate by a drive unit, and the other end is movably connected to the frame (11).

6. The continuous tea drying equipment according to claim 5, characterized in that, The driving unit is an eccentric shaft driving unit (22), and the other end of the vibrating whole is movably connected to the frame (11) through a rocker arm (24).

7. A continuous tea drying equipment according to claim 5, characterized in that, The driving unit is a linear driving unit (27), and a roller (26) is provided at the other end of the vibrating whole. A track (19) corresponding to the roller (26) is provided on the frame (11).

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