Tea leaf fixation device

Abstract

The utility model discloses a tea leaf fixation device, which belongs to the technical field of tea leaf production equipment and comprises a hot air fixation machine, a steam fixation machine and a steam furnace, the steam furnace is connected with a steam chamber of the steam fixation machine through a steam pipe, and a discharge end of the hot air fixation machine is connected with a feed end of the steam fixation machine through a first conveyor belt. An exhaust port of the hot air fixation machine is connected with a steam chamber of the steam fixation machine through an exhaust pipe. According to the utility model, the hot air fixation machine and the steam fixation machine are combined, and tea leaves are subjected to steam fixation after being subjected to hot air fixation, so that on one hand, the working temperature of the hot air fixation machine can be reduced, and the phenomena of leaf scorching and edge scorching in the tea leaf fixation process are avoided, and on the other hand, the steam fixation is beneficial to inactivating enzyme activity and inhibiting enzymatic oxidation. According to the utility model, hot air discharged by the hot air fixation machine is conveyed to the steam fixation machine, so that the hot air is recycled, and the energy utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea production equipment, in particular to a tea withering device. Background Art

[0002] Hot air and steam are common methods of withering tea leaves in tea production. Existing hot air withering machines generally have a relatively high operating temperature of up to 280-360°C, which makes it easy for leaves and edges to burn during the withering process. As for steam withering, there is a problem of low efficiency, and the steaming time is too long, the moisture content is high, and dehydration may be required later.

[0003] At present, some combined fixing devices have also appeared in the existing technology. For example, CN 108522687 B proposes a three-phase combined fixing device, including a drum, which is equipped with a heating device, a hot air generator, a hot air releaser, a steam generator and a steam releaser. The device integrates traditional drum fixing, steam fixing and hot air fixing to give full play to the advantages of each fixing method.

[0004] However, the existing combined-type fixing device still has the following defects: (1) The hot air generated during the fixing process is directly discharged and cannot be reused, resulting in low energy utilization. (2) The structures corresponding to multiple fixing methods are combined in the drum, and the corresponding effects cannot be achieved by modifying the company's existing equipment. When the company wants to use equipment with such functions, it can only purchase new equipment, thereby abandoning the company's existing equipment and causing waste of resources. (3) When multiple fixing methods are carried out simultaneously, the fixing temperature is difficult to control. Utility Model Content

[0005] The utility model proposes a tea fixing device, which combines a hot air fixing machine with a steam fixing machine. After the tea is fixed with hot air, it is then fixed with steam. On the one hand, the working temperature of the hot air fixing machine can be reduced, and the phenomenon of burnt leaves and burnt edges of the tea can be avoided during the fixing process. On the other hand, steam fixing is beneficial to deactivate the activity of enzymes and inhibit enzymatic oxidation. The combination of the two also shortens the steam fixing time and can avoid the problem of excessive water content of the tea.

[0006] The utility model transmits the hot air discharged by the hot air fixing machine to the steam fixing machine, on the one hand, reusing the hot air to improve the energy utilization rate, and on the other hand, mixing the dry hot air with the steam to reduce the humidity of the steam to a certain extent, thereby further reducing the water content of the tea leaves during steam fixing.

[0007] The utility model integrates the conventional hot air fixing machine and the steam fixing machine, giving full play to the respective fixing advantages of the two and making full use of the existing resources of the enterprise. It only requires simple modification of the existing fixing equipment, avoiding the problem of resource waste and reducing the cost of purchasing equipment for the enterprise.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0009] A tea fixing device comprises a hot air fixing machine, a steam fixing machine and a steam furnace, wherein the steam furnace is connected to the steam chamber of the steam fixing machine via a steam pipe, the discharge end of the hot air fixing machine is connected to the feed end of the steam fixing machine via a first conveyor belt, and the exhaust port of the hot air fixing machine is connected to the steam chamber of the steam fixing machine via an exhaust pipe.

[0010] Furthermore, the steam fixing machine includes a frame and a second conveyor belt, the steam chamber is arranged on the frame, and the second conveyor belt is horizontally arranged on the frame and passes through the steam chamber.

[0011] Furthermore, the steam chamber includes a trough body and a top cover. The trough body is arranged on the frame, and its top and left and right sides are open structures. The top cover is covered on the top of the trough body, and a discharge port is provided on the top of the top cover.

[0012] Furthermore, the top cover is detachably connected to the tank body, and the discharge port is provided with a discharge valve.

[0013] Furthermore, the bottom of the tank body is connected to the exhaust pipe and the steam pipe through a mixing pipe assembly.

[0014] Furthermore, the mixing pipe assembly includes a main pipe and at least two branch pipes, the main pipe is connected to the tank body through the at least two branch pipes, and the middle part of the main pipe is connected to the exhaust pipe and the steam pipe.

[0015] Furthermore, the steam withering machine also includes a tea scraping structure, which is arranged at the lower part of the discharge end of the second conveyor belt, and includes a scraper and a support frame. The top of the scraper is movably connected to the belt of the second conveyor belt, and the bottom of the scraper is connected to the frame through the support frame.

[0016] Furthermore, a third conveyor belt is provided below the tea scraping structure.

[0017] Furthermore, the first conveyor belt and the third conveyor belt are both climbing conveyor belts.

[0018] Furthermore, a material collecting trough is provided at the discharge end of the second conveyor belt, and the material collecting trough is installed on the frame and located below the scraper.

[0019] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0020] 1. The utility model combines a hot air fixing machine with a steam fixing machine. After the tea leaves have been fixed with hot air, they are then steam fixed. On the one hand, the operating temperature of the hot air fixing machine can be reduced, thus avoiding the phenomenon of scorched leaves and burnt edges that easily occur during the fixing process of the tea leaves. On the other hand, steam fixing is beneficial for inactivating the activity of enzymes and inhibiting enzymatic oxidation. The combination of the two also shortens the steam fixing time and can avoid the problem of excessive moisture content of the tea leaves. In addition, the hot air fixing and steam fixing are carried out separately, which is conducive to controlling and adjusting the fixing temperature and avoiding the fixing temperature being too high or too low.

[0021] 2. The utility model transmits the hot air discharged by the hot air fixing machine to the steam fixing machine, thereby recycling the hot air, improving energy utilization, and further reducing the water content of the tea leaves during steam fixing.

[0022] 3. The utility model is provided with a tea scraping structure at the discharge end of the steam withering machine. The tea leaves stuck on the second conveyor belt are scraped off by the scraper of the tea scraping structure so that the tea leaves can be better conveyed to the next process, avoiding the inconvenience caused by manual cleaning of the tea leaves.

[0023] 4. The utility model is provided with a collecting trough at the discharge end of the second conveyor belt, through which the tea leaves falling from the second conveyor belt are collected and directed to the third conveyor belt. The side of the collecting trough facing the second conveyor belt is wider so that the tea leaves can enter smoothly, and the side of the collecting trough facing the third conveyor belt is smaller so that the width of the third conveyor belt can be smaller.

[0024] 5. The utility model integrates the conventional hot air fixing machine and the steam fixing machine, giving full play to the respective fixing advantages of the two and making full use of the existing resources of the enterprise. It only requires simple modification of the existing fixing equipment, avoiding the problem of waste of resources and reducing the cost of purchasing equipment for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a tea leaf fixing device proposed in Example 1 of the present utility model;

[0026] Figure 2 This is a schematic structural diagram of the steam fixing machine proposed in Example 1 of the present utility model;

[0027] Figure 3 This is a schematic diagram of the installation of the tea scraping structure proposed in Example 2 of the present utility model;

[0028] Figure 4 This is a schematic diagram of the installation of the aggregate trough proposed in Example 3 of the present utility model;

[0029] Among them, the markings in the attached drawings are: 1-hot air fixing machine, 2-steam fixing machine, 3-steam oven, 4-first conveyor belt, 5-exhaust pipe, 6-steam pipe, 7-frame, 8-second conveyor belt, 9-trough body, 10-top cover, 11-discharge port, 12-discharge valve, 13-main pipe, 14-branch pipe, 15-third conveyor belt, 16-scraper, 17-support frame, 18-aggregate trough. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 1-2 As shown, a tea fixing device includes a hot air fixing machine 1, a steam fixing machine 2 and a steam oven 3, wherein the steam oven 3 is connected to the steam chamber of the steam fixing machine 2 through a steam pipe 6.

[0033] The discharge end of the hot air fixing machine 1 is connected to the feed end of the steam fixing machine 2 through the first conveyor belt 4, and the exhaust port of the hot air fixing machine 1 is connected to the steam chamber of the steam fixing machine 2 through the exhaust pipe 5.

[0034] Among them, the steam fixing machine 2 includes a frame 7 and a second conveyor belt 8, a steam chamber is arranged on the frame 7, and the second conveyor belt 8 is horizontally arranged on the frame 7 and passes through the steam chamber. The steam chamber includes a trough body 9 and a top cover 10, the trough body 9 is arranged on the frame 7, and its top and left and right sides are all open structures. The top cover 10 covers the top of the trough body 9, and the top of the top cover 10 is provided with a discharge port 11. The top cover 10 is detachably connected to the trough body 9, and the discharge port 11 is provided with a discharge valve 12, which can adjust the flow rate of the discharge port 11. In this embodiment, the top cover 10 is a flip cover, one side of which is hinged on the frame 7, and the other side is connected to the frame 7 by a lock. When the steam fixing machine 2 needs to be repaired or other operations are performed, the top cover 10 can be opened.

[0035] The bottom of the tank body 9 is connected to the exhaust pipe 5 and steam pipe 6 via a mixing pipe assembly. The mixing pipe assembly includes a main pipe 13 and at least two branch pipes 14. The main pipe 13 is connected to the tank body 9 via at least two branch pipes 14. The middle of the main pipe 13 is connected to the exhaust pipe 5 and steam pipe 6. In this embodiment, four branch pipes 14 are provided, evenly distributed across the bottom of the tank body 9. The hot air from the exhaust pipe 5 and the steam from the steam pipe 6 are thoroughly mixed within the mixing pipe assembly before being introduced into the steam chamber for steam fixation.

[0036] The utility model combines a hot air fixing machine 1 with a steam fixing machine 2. After the tea leaves are fixed with hot air, they are then fixed with steam. On the one hand, the working temperature of the hot air fixing machine 1 can be reduced, thereby avoiding the phenomenon of burnt leaves and burnt edges during the fixing process of the tea leaves. On the other hand, steam fixing is beneficial to inactivate the activity of enzymes and inhibit enzymatic oxidation. The combination of the two also shortens the steam fixing time and can avoid the problem of excessive water content in the tea leaves.

[0037] In addition, hot air fixation and steam fixation are performed separately, which helps to control and adjust the fixation temperature and avoid excessively high or low fixation temperatures. For example, the operating temperature of hot air fixation machine 1 can be set to 260-280°C, and the operating temperature of steam fixation machine 2 can be set to 200-240°C. The two do not interfere with each other, ensuring the stability and effectiveness of the operating temperatures.

[0038] The utility model transmits the hot air discharged by the hot air fixing machine 1 to the steam fixing machine 2, on the one hand, reusing the hot air to improve the energy utilization rate, and on the other hand, mixing the dry hot air with the steam to reduce the humidity of the steam to a certain extent, thereby further reducing the water content of the tea leaves during steam fixing.

[0039] Example 2

[0040] like Figure 3 As shown, based on Example 1, in this embodiment, the steam fixing machine 2 further includes a tea scraping structure, which is arranged at the lower part of the discharge end of the second conveyor belt 8. It includes a scraper 16 and a support frame 17. The top of the scraper 16 is movably connected to the belt of the second conveyor belt 8, and the bottom of the scraper 16 is connected to the frame 7 through the support frame 17. A third conveyor belt 15 is provided below the tea scraping structure. Both the first conveyor belt 4 and the third conveyor belt 15 are climbing conveyor belts.

[0041] The utility model is provided with a tea scraping structure at the discharge end of the steam fixing machine 2. The tea leaves stuck on the second conveyor belt 8 are scraped off by the scraper 16 of the tea scraping structure so that the tea leaves can be better conveyed to the next process, avoiding the inconvenience caused by manual cleaning of the tea leaves.

[0042] Example 3

[0043] like Figure 4 As shown, based on Example 2, in this embodiment, a collection trough 18 is provided at the discharge end of the second conveyor belt 8. The collection trough 18 is mounted on the frame 7 and located below the scraper 16. The tea leaves that fall from the second conveyor belt 8 are collected by the collection trough 18 and directed to the third conveyor belt 15. The side of the collection trough 18 facing the second conveyor belt 8 is wider to facilitate the smooth entry of the tea leaves. The side of the collection trough 18 facing the third conveyor belt 15 is smaller, allowing the width of the third conveyor belt 15 to be smaller.

[0044] In addition, the utility model integrates the conventional hot air fixing machine 1 and the steam fixing machine 2, giving full play to the fixing advantages of the two and making full use of the existing resources of the enterprise. Only simple modifications need to be made to the existing fixing equipment, avoiding the problem of waste of resources and reducing the cost of purchasing equipment for the enterprise.

[0045] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A tea-curing device, comprising a hot air curing machine, a steam curing machine, and a steam oven, wherein the steam oven is connected to the steam chamber of the steam curing machine via a steam pipe, and is characterized in that: The discharge end of the hot air fixing machine is connected to the feed end of the steam fixing machine through a first conveyor belt, and the exhaust port of the hot air fixing machine is connected to the steam chamber of the steam fixing machine through an exhaust pipe.

2. A tea leaf fixing device according to claim 1, characterized in that: The steam fixing machine includes a frame and a second conveyor belt, the steam chamber is arranged on the frame, and the second conveyor belt is horizontally arranged on the frame and passes through the steam chamber.

3. A tea leaf fixing device according to claim 2, characterized in that: The steam chamber includes a trough body and a top cover. The trough body is arranged on the frame, and its top and left and right sides are all open structures. The top cover is closed on the top of the trough body, and a discharge port is arranged on the top of the top cover.

4. The tea leaf fixing device according to claim 3, characterized in that: The top cover is detachably connected to the tank body, and the discharge port is provided with a discharge valve.

5. The tea leaf fixing device according to claim 3, characterized in that: The bottom of the tank body is connected to the exhaust pipe and the steam pipe through a mixing pipe assembly.

6. The tea leaf fixing device according to claim 5, characterized in that: The mixing pipe assembly includes a main pipe and at least two branch pipes. The main pipe is connected to the tank body through the at least two branch pipes. The middle part of the main pipe is connected to the exhaust pipe and the steam pipe.

7. The tea leaf fixing device according to claim 2, characterized in that: The steam withering machine also includes a tea scraping structure, which is arranged at the lower part of the discharge end of the second conveyor belt. It includes a scraper and a support frame. The top of the scraper is movably connected to the belt of the second conveyor belt, and the bottom of the scraper is connected to the frame through the support frame.

8. The tea leaf fixing device according to claim 7, characterized in that: A third conveyor belt is provided below the tea scraping structure.

9. The tea leaf fixing device according to claim 8, characterized in that: The first conveyor belt and the third conveyor belt are both climbing conveyor belts.

10. The tea leaf withering device according to claim 8, characterized in that: The discharging end of the second conveyor belt is provided with a collecting trough, which is installed on the frame and located below the scraper.

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