Tea drying device capable of recovering heat

Abstract

The utility model relates to the technical field of tea processing equipment, in particular to a tea drying device capable of recovering heat. Comprising a drying box body, the drying box body is provided with a box door, an exhaust fan is arranged at the top of the drying box body, the output end of the exhaust fan is fixedly connected with a circulating air pipe, an air heater is fixedly installed on the inner wall of one side of the drying box body, and the air heater is provided with an air outlet in the drying box body. A dust filter screen is arranged at the end, away from the hot-air blower, of the air outlet, the end, away from the output end of the exhaust fan, of the circulating air pipe is fixedly connected with an air drying assembly, and the output end of the air drying assembly is fixedly connected with the hot-air blower. The technical problem that heat circulation is slow is solved, and the technical effect that hot air circulation is faster is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea processing equipment, in particular to a tea drying device capable of recovering heat. Background Art

[0002] The heat-recoverable tea drying device consists of a dryer and a hot air recovery device. In the current tea production, tea drying technology is extremely important. In the existing tea production, after the tea leaves are picked, they need to be dried by a blower after the steps of withering and shaping. In order to avoid heat discharge waste, make full use of the exhaust heat of the tea dryer, reduce energy consumption, and save costs, a heat recovery device is set at the exhaust port of the oven, and the high-temperature and high-humidity gas discharged from the oven is used to preheat the cold air entering the hot air generating device.

[0003] However, in this structure, since the heat flowing through the air inlet flows slowly through the exhaust duct, the efficiency of heat recovery in the process of drying tea leaves is low, and the heat cannot be fully recovered and utilized. In addition, the use of a heat recovery device causes the air humidity in the box to be high, resulting in high temperature and humid conditions, affecting the quality of tea making. In addition, since the air will absorb dust on the tea leaves during the drying process and circulate in the drying box, it is unhygienic. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a tea drying device capable of recovering heat, which solves the problems in the prior art of slow heat circulation, failure to discharge water vapor in time, and dust affecting the quality of tea.

[0005] According to an embodiment of the utility model, a heat-recyclable tea drying device comprises a drying box, a box door is arranged on the drying box, and is characterized in that: an exhaust fan is arranged on the top of the drying box, the air outlet of the exhaust fan is fixedly connected to a circulating air duct, a hot air blower is fixedly installed on the lower part of the side wall of the drying box, the air outlet of the hot air blower is connected to the interior of the drying box or is located inside the drying box, a dust filter is installed in the air outlet, the end of the circulating air duct away from the exhaust fan is fixedly connected to an air drying component, and the air outlet of the air drying component is connected to the air inlet of the hot air blower through a pipe.

[0006] The technical principle of the utility model is: firstly, a hot air blower is used to heat the air outside the box and input it into the drying box. When the hot air is dried for the first time, the moisture of the tea leaves on the tea board is dried. The water vapor and hot air in the box are quickly extracted from the air inlet of the exhaust fan by the exhaust fan, and then discharged into the air drying component through the circulating air duct for drying, and then returned to the drying box after secondary heating by the hot air blower.

[0007] Compared with the prior art, the utility model has the following beneficial effects: by adopting an exhaust fan, an air drying component, and a dust filter, the technical problems of slow heat circulation, high air humidity caused by water vapor, and dust affecting the quality of tea leaves are solved, and the technical effects of making the hot air circulate faster, avoiding high temperature and humid conditions that affect the quality of tea making, and avoiding dust circulation are produced. Since the gas flow rate is increased and the air is dried, the utility model can further improve the tea drying efficiency and ensure the color of the tea leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0009] Figure 2 It is a schematic diagram of the external structure of the utility model.

[0010] In the figure: 1. Drying box; 2. Hot air blower; 3. Air outlet; 4. Exhaust fan; 5. Circulating air duct; 6. Exhaust outlet; 7. Exhaust cover; 8. Air drying component; 9. Tea plate; 10. Bracket; 11. Dust filter; 12. Box door; 13. Loading platform; 14. Support rod; 15. Moisture absorption filter layer; 16. Desiccant layer; 17. Spiral air guide plate; 18. Support foot. DETAILED DESCRIPTION

[0011] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments. Figure 1-Figure 2 As shown, the embodiment of the utility model proposes a tea drying device with heat recovery, including a drying box 1, a box door 12 is arranged on the drying box 1, an exhaust fan 4 is arranged on the top of the drying box 1, the air outlet of the exhaust fan 4 is fixedly connected to the circulating air duct 5, a hot air blower 2 is fixedly installed on the lower part of the side wall of the drying box 1, the air outlet of the hot air blower 2 is connected to the interior of the drying box 1 or is located inside the drying box 1, a dust filter 11 is installed in the air outlet 3, the end of the circulating air duct 5 away from the exhaust fan 4 is fixedly connected to the air drying component 8, and the air outlet of the air drying component 8 is connected to the hot air blower 2 through a pipeline. Air inlet, the oven box is provided with a box door 12, which is closed when in use, an exhaust fan 4 is arranged on the top of the drying box 1, and the output end of the exhaust fan 4 is fixedly connected with a circulating air duct 5 for extracting hot air from the drying box 1, and a hot air blower 2 is fixedly installed on the inner wall of one side of the drying box 1, and the hot air blower 2 is provided with an air outlet in the drying box 1, and the hot air blower is fixedly connected to the output end of the air drying component at the external top of the drying box 1, and a dust filter 11 is arranged at the end of the air outlet 3 away from the hot air blower 2. When the hot air blower 2 is started, the dust in the air can be initially filtered out when air is drawn into the box from the outside, and tea residues and other debris can also be filtered out when the hot air is recovered by secondary filtration.

[0012] One end of the circulating air duct 5 away from the air outlet of the exhaust fan 3 is fixedly connected to the air drying component 8, and the output end of the air drying component 8 is fixedly connected to the hot air blower 2. A plurality of loading platforms 13 are fixedly installed at the bottom of the drying box body 1. Support rods 14 are arranged on the loading platforms 13. The spacing between the loading platforms is smaller than the opening distance of the box door 12, so that it is convenient to put the tea plate on the bracket when in use.

[0013] The air drying component 8 includes a cylindrical shell and a core body, the shell is fixedly connected to the circulating air duct 5 and the hot air blower 2, an opening and closing door is arranged on the shell, the core body is detachably mounted in the shell, a support foot 18 for placing the core body is arranged on the inner wall of the shell, a spiral air guide plate 17 is arranged on the inner wall of the core body, the spiral air guide plate 17 can guide the hot air discharged from the air outlet of the circulating air duct 5 to the water-absorbing filter layer below, the hygroscopic filter layer adopts a water-absorbing material, when in use, the hygroscopic filter layer first absorbs most of the moisture in the circulating hot air, and then passes through the desiccant layer 16 to dry and filter the excess moisture, so that the circulating hot air reaches a dry condition, the desiccant layer is arranged as an adhesive layer, which can be detachably attached to the spiral air guide plate 17, and the desiccant layer 16 is made of calcium chloride desiccant.

[0014] An exhaust port 6 is provided on the top of the circulating air duct 5, and an exhaust cover 7 is threadedly connected to the end of the exhaust port 6 away from the circulating air duct 5. After use, the exhaust cover 7 can be opened and the hot air blower 2 can be turned off to allow the exhaust fan to exhaust the hot air in the box through the exhaust port 6. The exhaust port 6 can be further lengthened, and the end away from the exhaust fan 4 can be extended to the outdoors, thereby avoiding the discharge of hot air indoors.

[0015] The detailed working process of this embodiment is to open the box door 12, place the tea leaves on the tea plate 9, and then put the tea plate 9 on the bracket 10. The tea plate 9 is a breathable mesh plate. The hot air blower 2 is started to inhale the air outside the box. After heating, the air is filtered out of the external air dust through the dust filter 11 through the air outlet 3 and then discharged into the drying box 1 to dry the tea leaves. At the same time, the exhaust fan 4 starts to operate, and the hot air in the drying box 1 is quickly inhaled from the input end of the exhaust fan 4, and then discharged to the circulating air duct 5 from the output end of the exhaust fan 4. The hot air flows through the circulating air duct 5 to the air drying component 8, and then passes through the hygroscopic filter layer 15. The hygroscopic filter layer 15 adopts a water absorption method. The material, when in use, firstly absorbs most of the moisture in the circulating hot air by the moisture absorption filter layer, and then passes through the desiccant layer 16 to dry and filter the remaining moisture, so that the circulating hot air reaches the dry condition. The desiccant layer is made of calcium chloride desiccant, which can effectively absorb most of the moisture in the air. The filtered hot air is discharged from the output end of the air drying component 8 into the hot air blower for secondary heating, and then re-discharged into the drying box 1. Due to the provision of the exhaust fan 4, the air drying component 8, and the dust filter 11, the hot air circulation is faster, and the filtered hot air is drier and cleaner, avoiding the high temperature and humidity conditions, affecting the quality of tea making and the health problems caused by the circulation of dust.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tea drying device capable of recovering heat, comprising a drying box (1), wherein a door (12) is arranged on the drying box (1), and characterized in that: An exhaust fan (4) is arranged on the top of the drying box (1), and the air outlet of the exhaust fan (4) is fixedly connected to a circulating air duct (5). A hot air blower (2) is fixedly installed on the lower part of the side wall of the drying box (1), and the air outlet (3) of the hot air blower (2) is connected to the interior of the drying box (1) or is located inside the drying box (1). A dust filter (11) is installed in the air outlet (3). One end of the circulating air duct (5) away from the exhaust fan (4) is fixedly connected to an air drying component (8), and the air outlet of the air drying component (8) is connected to the air inlet of the hot air blower (2) through a pipeline.

2. A heat-recoverable tea drying device as claimed in claim 1, characterized in that: A plurality of carrying platforms (13) are arranged at the bottom of the drying box (1), and a support rod (14) is fixedly connected to the carrying platform (13). A bracket (10) is arranged on the support rod (14), and the bracket (10) has multiple layers, and a tea plate (9) is placed on each layer.

3. The heat-recoverable tea drying device according to claim 1, characterized in that: The air drying component (8) comprises a cylindrical shell and a core body, the shell body is fixedly connected to the circulating air duct (5) and the hot air blower (2), an opening and closing door is provided on the shell body, the core body is detachably sleeved in the shell body, a spiral air guide plate (17) is provided on the inner wall of the core body, and a detachable desiccant layer (16) is provided on the spiral air guide plate (17).

4. A heat-recoverable tea drying device as claimed in claim 3, characterized in that: A support foot (18) is arranged on the inner wall of the shell for placing the core.

5. The heat-recoverable tea drying device according to claim 4, characterized in that: The desiccant layer (16) is made of calcium chloride desiccant.

6. The heat-recoverable tea drying device according to claim 1, characterized in that: An exhaust port (6) is provided at the top of the circulating air duct (5), and an exhaust cover (7) is threadedly connected to one end of the exhaust port (6) away from the circulating air duct (5).

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