Vertical tea dryer

Abstract

The utility model discloses a vertical tea dryer which comprises a box body, a lifting mechanism arranged in the box body and a drying sieve placed on the lifting mechanism, the box body is of a closed structure, a heating chamber is arranged at the bottom of the box body, an air outlet is formed in the heating chamber, an air suction opening is formed in the top of the box body, and the drying sieve is arranged on the box body. A circulating air duct is arranged between the exhaust inlet and the heating chamber; ventilation gaps are formed between the periphery of the drying sieve and the interior of the box body. A feeding port matched with the drying screen is formed in the lower side wall of the box body, a discharging port matched with the drying screen is formed in the upper side wall of the box body, an automatic feeding mechanism is arranged at the position of the feeding port, and an automatic discharging mechanism is arranged at the position of the discharging port. The tea leaf dryer can improve the tea leaf drying efficiency and uniformity, is high in automation degree, small in energy consumption loss and low in production cost, and can be widely applied to the field of tea leaf dryers.

Description

Technical Field

[0001] The utility model relates to the technical field of tea processing, in particular to a vertical tea dryer. Background Art

[0002] The tea dryer is a kind of tea processing machinery, and there are various types. Among them, the vertical tea dryer occupies a small space, can dry a large number of tea leaves each time, and has a low cost, so it is widely used. Due to the laminated structure design of the vertical dryer, the design of the air duct is particularly important. If the design is unreasonable, it may lead to inconsistent drying of tea leaves. Especially for the tea leaves in the middle layer, the wind force may be difficult to reach, seriously affecting the drying efficiency and also resulting in a decline in the quality of tea leaves. In addition, the existing vertical dryer requires manual feeding, that is, manually putting each drawer of tea leaves into the dryer, which requires opening the dryer frequently. This not only has a high labor cost and low efficiency, but also causes heat dissipation when opening and closing the door, increasing the energy consumption of the equipment while reducing the drying efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a vertical tea dryer to solve the problem of low drying efficiency of the existing vertical dryer.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a vertical tea dryer, including a box body, a lifting mechanism arranged in the box body, and a baking screen placed on the lifting mechanism. The box body is a closed structure, and a heating chamber is arranged at the bottom of the box body. An air outlet is arranged on the heating chamber, and an air suction port is arranged at the top of the box body. A circulation air duct is arranged between the air suction port and the heating chamber; ventilation gaps are arranged between the periphery of the baking screen and the interior of the box body.

[0005] To realize the automatic entry and exit of the baking screen, reduce the cumbersome degree of manual door opening and feeding, improve convenience, and at the same time, reduce the heat loss caused by opening the door, an inlet corresponding to the baking screen is arranged on the lower side wall of the box body, and an outlet corresponding to the baking screen is arranged on the upper side wall of the box body. An automatic feeding mechanism is arranged at the inlet, and an automatic discharging mechanism is arranged at the outlet.

[0006] To improve the effect of heat circulation and at the same time ensure the reliability of equipment operation, one heating chamber is arranged on each side of the box body, and two corresponding circulation air ducts are also arranged. The air suction port is arranged near the middle position of the box body.

[0007] Furthermore, the automatic feeding mechanism includes a support frame, which extends from outside the box body to one end inside the box body far from the inlet. A first rotating chain is arranged on the support frame, and a first push plate for pushing the baking screen forward is fixedly arranged on the first rotating chain.

[0008] The automatic discharging mechanism includes a second rotating chain arranged on the top of the box body, and a second push plate for pushing the drying sieve forward is fixedly arranged on the second rotating chain.

[0009] Furthermore, the lifting mechanism includes two groups of synchronously operating lifting conveyor chains located on both sides of the box body, and a set of pallets for supporting the drying sieve are arranged on the lifting conveyor chains.

[0010] The beneficial effects of the present utility model: Through the structural design of the bottom heating chamber and the circulating air duct, under the action of the top air suction port, the air heated in the bottom heating chamber is continuously pumped upward to dry the tea leaves in the box body, and then the air at the top returns to the heating chamber through the circulating air duct for heating, and so on continuously in a cycle, thereby minimizing the heat loss to the greatest extent and improving the drying efficiency. At the same time, through the design of the ventilation gap, the fluidity of the hot air can be improved, avoiding the problem that the drying sieve in the middle position is poorly heated, thereby improving the uniformity of heating the tea leaves in the drying sieve and ensuring the quality of tea leaf drying. The automatic feeding mechanism and the automatic discharging mechanism have simple structures, can realize automatic feeding and discharging, reduce the cost of manual operation. At the same time, it can also effectively reduce the heat loss caused by manually opening the door for feeding and taking materials, reduce the energy consumption of the equipment, and improve the economy of the equipment.

[0011] Hereinafter, the present utility model will be described in more detail in conjunction with the drawings and embodiments. Description of the Drawings

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the internal structure of the box body of the present utility model.

[0014] Figure 3 It is a transverse sectional view of the present utility model.

[0015] Figure 4 It is a longitudinal sectional view of the present utility model. Detailed Embodiment

[0016] Embodiment, such as Figures 1 to 4As shown in the figure, a vertical tea dryer includes a box body 1, a lifting mechanism 2 arranged inside the box body 1, and a drying screen 3 placed on the lifting mechanism 2. A heating chamber 4 is provided at the bottom of the box body 1, and an air outlet 41 is arranged on the heating chamber 4. An air suction port 5 is provided at the top of the box body 1, and a circulating air duct 6 is arranged between the air suction port 5 and the heating chamber 4. Ventilation gaps are provided between the periphery of the drying screen 3 and the interior of the box body 1. Hot air continuously circulates in the box body 1 through the circulating air duct 6 to dry the tea leaves in the drying screen 3 placed on the lifting mechanism 2. This structure has high thermal efficiency and fast drying speed. Moreover, through the setting of the ventilation gaps, the uniformity of the wind force can be improved, ensuring the consistency of tea drying. To discharge moisture, an openable and closable moisture discharge port 13 is also provided at the top of the box body 1.

[0017] An electric heating wire 42 is arranged in the heating chamber 4. The circulating air duct 6 includes a horizontal air duct 61 at the top of the box body 1 and a vertical air duct 62 connected to the heating chamber 4. The air suction port 5 is arranged on the horizontal air duct 61 and near the middle position of the box body, and a centrifugal fan 51 for drawing air is arranged at the position of the air suction port 5. To further improve the efficiency of hot air circulation, two heating chambers 4 are provided on both sides of the box body 1 and are symmetrically arranged. Correspondingly, two circulating air ducts 6 are also provided, forming two independent hot air circulation systems to accelerate the circulation of hot air. At the same time, this structure can also improve the reliability of equipment operation. When one hot air circulation system fails to work, the other hot air circulation system can still realize the drying of tea leaves.

[0018] The heating chamber 4 is of a rectangular structure, its length is not less than the length of the drying screen 3 and less than the length of the box body 1. Air outlets 41 are arranged on both end faces and the inner side face of the heating chamber 4. The air outlets 41 are a group of strip-shaped opening structures or honeycomb-shaped opening structures.

[0019] To achieve automatic feeding and discharging, reduce labor intensity, and at the same time, avoid frequently opening the door to reduce heat loss, a feeding port 11 adapted to the drying screen 3 is arranged on the lower side wall of the box body 1, and a discharging port 12 adapted to the drying screen 3 is arranged on the upper side wall of the box body 1. An automatic feeding mechanism 7 is arranged at the feeding port 11, and an automatic discharging mechanism 8 is arranged at the discharging port 12. Flexible baffles can be arranged at the feeding port 11 and the discharging port 12 to prevent heat from escaping, thereby reducing heat loss.

[0020] The automatic feeding mechanism 7 includes a support frame 71 which extends from outside the box body 1 all the way to one end inside the box body 1 away from the feeding port 11. A first rotating chain 72 is arranged on the support frame 71, and a first push plate 73 for pushing the drying screen 3 forward is fixedly arranged on the first rotating chain 72. The first rotating chain 72 rotates, so that the first push plate 73 pushes the drying screen 3 placed on the support frame 71 into the box body 1. The automatic discharging mechanism 8 includes a second rotating chain 81 arranged on the top of the box body 1, and a second push plate 82 for pushing the drying screen 3 forward is fixedly arranged on the second rotating chain 81. The second transmission chain 81 rotates, so that the second push plate 82 pushes the topmost drying screen 3 outwards and out of the box body 1.

[0021] The lifting mechanism 2 includes two groups of synchronously running lifting conveyor chains 9 located on both sides of the box body 1, and a group of support plates 10 for supporting the drying screen 3 are arranged on the lifting conveyor chains 9. To improve stability, each group of lifting conveyor chains 9 includes an upper rotating shaft 91 and a lower rotating shaft 92, and two rotating chains 93 are arranged between the upper rotating shaft 91 and the lower rotating shaft 92. Corresponding rotating gears for cooperating with the rotating chains 93 are arranged on the upper rotating shaft 91 and the lower rotating shaft 92. The two ends of the support plate 10 are respectively fixed on the two rotating chains 93, and the drying screen 2 is lifted and conveyed upwards through the support plate 10. The lowest point height of the rotating chain 93 is lower than the height of the lower surface of the drying screen 3 when the drying screen 3 is placed on the automatic feeding mechanism 7, so that the support plate 10 on the lifting conveyor chain 9 can run to the lower part of the drying screen 3 on the automatic feeding mechanism 7 and lift the drying screen 3.

[0022] The lifting mechanism 2 cooperates with the automatic feeding mechanism 7. After the automatic feeding mechanism 7 conveys the drying screen 3 into the box body 1, the lifting conveyor chain 9 on the lifting mechanism 2 rotates, and the support plate 10 on the lifting conveyor chain 9 supports under the drying screen 3 and drives the drying screen 3 to lift upwards together, so that it is separated from the automatic feeding mechanism 7.

[0023] The above has made an exemplary description of the present invention in combination with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. A vertical tea dryer, comprising a box body (1), a lifting mechanism (2) arranged inside the box body (1), and a drying sieve (3) placed on the lifting mechanism (2), characterized in that: The box body (1) is of a closed structure. A heating chamber (4) is provided at the bottom of the box body (1), and an air outlet (41) is provided on the heating chamber (4). An air suction port (5) is provided at the top of the box body (1), and a circulation air duct (6) is provided between the air suction port (5) and the heating chamber (4); ventilation gaps are provided between the periphery of the baking sieve (3) and the interior of the box body (1).

2. The vertical tea dryer according to claim 1, wherein: A feed inlet (11) adapted to the baking sieve (3) is provided on the lower side wall of the box body (1), and a discharge outlet (12) adapted to the baking sieve (3) is provided on the upper side wall of the box body (1). An automatic feeding mechanism (7) is provided at the feed inlet (11), and an automatic discharging mechanism (8) is provided at the discharge outlet (12).

3. The vertical tea dryer according to claim 1, wherein: One heating chamber (4) is provided on each side of the box body (1), and correspondingly, two circulation air ducts (6) are also provided. The air suction port (5) is provided near the middle position of the box body (1).

4. The vertical tea dryer according to claim 2, wherein: The automatic feeding mechanism (7) includes a support frame (71) that extends from outside the box body (1) to the end inside the box body away from the feed inlet (11). A first rotating chain (72) is provided on the support frame (71), and a first push plate (73) for pushing the baking sieve (3) forward is fixedly provided on the first rotating chain (72).

5. The vertical tea dryer according to claim 2, characterized in that: The automatic discharging mechanism (8) includes a second rotating chain (81) provided on the top of the box body (1), and a second push plate (82) for pushing the baking sieve (3) forward is fixedly provided on the second rotating chain (81).

6. The vertical tea dryer according to claim 1, characterized in that: The lifting mechanism (2) includes two groups of synchronously operating lifting conveyor chains (9) located on both sides of the box body (1), and a set of support plates (10) for supporting the baking sieve (3) are provided on the lifting conveyor chains (9).

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