Fermentation heaping yellowing device for yellow tea

Abstract

The utility model relates to the technical field of tea processing, in particular to a yellow tea fermentation heaping yellowing device which comprises a box body, a control device used for controlling environment temperature and humidity is arranged in the box body, a support assembly is installed in the box body, and the support assembly comprises a first support fixedly arranged and a second support movably arranged. A driving device for driving the second support to move is further arranged in the box body, a plurality of containing devices used for containing tea leaves are vertically arranged between the first support and the second support, and the two ends of each containing device are hinged to the first support and the second support respectively. Compared with the prior art, by arranging the containing devices which are arranged in a layered mode and can swing, the technical problems that in the prior art, tea leaves are stacked in a crowded space and are not in sufficient contact with air and water, the tea leaves are prone to being damaged by a stirring knife arranged in the tea leaves, and then the quality of finished tea leaves is affected are solved.

Description

Technical Field

[0001] The utility model patent relates to the technical field of tea processing, specifically a device for fermenting and yellowing yellow tea. Background Art

[0002] At present, yellow tea is a kind of tea with yellow soup and yellow leaves, rich in sweet fragrance, mellow taste, and good stomach-nourishing tea that increases blood vessel elasticity. In the production and processing of yellow tea, the traditional processing technology of light yellowing is adopted, which effectively retains 85% of the nutrients in 70% of the tea material content. In the yellowing processing technology, a large amount of theaflavins are produced. Theaflavins are a golden pigment existing in yellow tea. They are the product of the yellowing production and processing of tea leaves. They are compounds with definite pharmacological and chemical effects. Through the research report published in the international authoritative medical impurity JAMA, clinical experiments have verified that theaflavins have the unique functions of regulating blood lipids, preventing cardiovascular diseases and lowering blood lipids. Moreover, theaflavins can not only combine with cholesterol in the intestines and reduce the absorption of cholesterol in food, but also inhibit the synthesis of cholesterol in the human body. It is known as the "soft gold" in tea. At the same time, the effective production of theaflavins makes the yellow tea present the characteristics of bright yellow leaves and golden tea soup during the brewing process.

[0003] Therefore, the yellowing process in the yellow tea production process is crucial for the production of yellow tea. The main method at present is to wrap the tea leaves after withering and rolling with paper, or cover them with wet cloth after piling, and the time varies from tens of minutes to several hours, so as to promote the tea leaves to undergo non-enzymatic auto-oxidation under the action of water and heat to form yellow. The steps of this yellowing process are cumbersome, and paper packaging or wet cloth covering are difficult to provide a relatively good low-oxygen or oxygen-free environment. Moreover, the yellowing of the tea leaves during the piling process also has the phenomenon of uneven yellowing, resulting in the decline of the quality of yellow tea. In order to solve the above defects, yellow tea manufacturers have developed some devices for yellowing tea leaves, such as the Chinese patent "A yellow tea processing and fermentation device" (patent number ZL202220720998.2, published on 20220708) records the following structure: including a device table, a tea feeding hopper is fixedly installed on the top of the device table, a heating and drying device is fixedly installed on one end of the top of the device table, a humidifying device is fixedly installed on the other end of the top of the device table, and a power drive device is fixedly installed on the bottom of the device table. In the above scheme, the driving motor is fixedly installed at the bottom of the work surface, and the stirring knife group is movably installed inside the feed box. During the operation of the device, the driving motor is operated to make the stirring knife group stir the inside of the feed box, and the fan assembly is started, and the generated wind passes through the heating wire to heat the yellow tea. At the same time, according to the state of the yellow tea, when there is less water inside, the drainage pump is started to spray the water inside the water tank to the inside of the feed box, so that the yellow tea remains in a moist and hot state, and the stirring is more uniform, which saves time and manpower, improves the efficiency of fermentation, and improves the quality of yellow tea.

[0004] The main body of the yellow tea processing and fermentation device described in the above-mentioned prior art is cylindrical in shape, and stirring is used to make the contact between yellow tea and air more uniform, thereby improving the yellowing effect. However, this yellow tea processing and fermentation device has only one cylindrical storage space. After the tea leaves are poured into the device, all the tea leaves are piled together. Even if they are stirred by a stirring blade, because the axis of the equipment is arranged vertically, the contact between the tea leaves and moisture and air during the stirring process is not sufficient, resulting in a poor yellowing effect. The stirring blade is likely to cause damage to the tea leaves piled up in the crowded space during the stirring process, affecting the quality of the finished tea leaves. Utility Model Content

[0005] The utility model is intended to provide a yellow tea fermentation and yellowing device, which is mainly used to solve the technical problems existing in the prior art that tea leaves are piled up in a crowded space and are not in sufficient contact with air and moisture, and the stirring blades arranged inside are easy to damage the tea leaves, thereby affecting the quality of the finished tea leaves.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A device for fermenting and yellowing yellow tea comprises a box body, a control device for controlling ambient temperature and humidity is arranged in the box body, a bracket assembly is installed in the box body, the bracket assembly comprises a fixed first bracket and a movably arranged second bracket, a driving device for driving the second bracket to move is also arranged in the box body, a plurality of accommodating devices for accommodating tea leaves are vertically arranged between the first bracket and the second bracket, and two ends of the accommodating devices are respectively hinged to the first bracket and the second bracket.

[0008] Preferably, the accommodating device comprises an accommodating frame, a plurality of ear plates are respectively arranged at both ends of the accommodating frame, the ear plates at both ends are respectively hinged to the first bracket and the second bracket, and a accommodating tray is placed on the accommodating frame.

[0009] Preferably, the inner bottom of the accommodating tray is processed into a circular surface, and the axis of the circular surface is perpendicular to the swinging direction of the accommodating tray.

[0010] Preferably, a plurality of ridges are equidistantly arranged on the inner surface of the accommodating tray, and the length direction of the ridges is perpendicular to the swinging direction of the accommodating tray.

[0011] Preferably, the bottom of the receiving tray is provided with a plurality of ventilation holes which can only allow gas to pass but not tea leaves to pass through.

[0012] Preferably, the second bracket includes two parallel racks, both racks are hinged to the accommodating device, a connecting rod is vertically fixed between the two racks, a cylinder is hinged on the connecting rod, and one end of the cylinder away from the connecting rod is hinged to the bottom of the box.

[0013] Preferably, a nozzle for spraying low-oxygen air upwards is provided at the bottom of the box body, the nozzle is connected to a ventilation pipe, one end of the ventilation pipe away from the nozzle extends out of the box body and is connected to an electrically controlled regulating valve for controlling the gas flow, and one end of the electrically controlled regulating valve away from the ventilation pipe is connected to a high-pressure gas storage tank for releasing low-oxygen gas; a water spray head for spraying water mist is provided at the bottom of the box body, which is connected to a water pipe, one end of the water pipe away from the water spray head is connected to a water pump, and one end of the water pump away from the water pipe is connected to a water tank; a one-way ventilation valve for discharging gas is provided at the top of the box body.

[0014] Preferably, a heating pipe for heating air is laid on the inner circumferential surface of the box body, and an end of the heating pipe extends out of the box body and is connected to a heat exchanger.

[0015] Preferably, the control device includes a temperature sensor and a humidity sensor installed inside the box, and the temperature sensor, humidity sensor, heat exchanger, water pump, cylinder, and electronically controlled regulating valve are all electrically connected to a controller installed on the box.

[0016] Beneficial effects of the utility model:

[0017] 1. Compared with the prior art, the tea leaves in the device can be placed in different containing devices in batches, which increases the contact area between the tea leaves and moisture and gas, making the yellowing effect better. At the same time, the second bracket in the device is movably arranged to drive the containing device to swing, so as to stir the tea leaves in the containing device. Compared with the existing solution of stirring by a stirring knife, the tea leaves are stirred by swinging in the present solution, which avoids the tearing damage of the tea leaves caused by shear force, thereby solving the technical problems in the prior art that the tea leaves are piled up in a crowded space and are not in sufficient contact with the air and moisture, and the stirring knife arranged inside is easy to damage the tea leaves, thereby affecting the quality of the finished tea leaves.

[0018] 2. The second bracket moves up and down under the action of the cylinder, driving the receiving plate to swing. The inner surface of the receiving plate in the device is a torus, which makes it easier for the tea leaves to slide in the receiving plate under the force of gravity, thereby turning over and stirring. The ridges in the circular plate can disperse the agglomerated tea leaves during the movement, thereby achieving a uniform turning and stirring effect.

[0019] 3. Through the detection of temperature sensors and humidity sensors, the box is controlled to continuously pass low-oxygen gas through the nozzle to maintain the low-oxygen fermentation environment inside the box. At the same time, the heat exchanger is controlled to maintain the temperature inside the box, and the water pump is controlled to work so that the water nozzle sprays water mist to maintain the humidity of the fermentation environment. Compared with the working environment in direct contact with air in the prior art, this device controls the oxygen content and temperature and humidity of the gas in the box to more accurately control the yellowing effect of the tea leaves;

[0020] 4. The air jet blows upwards, which can make the tea leaves slide and stir more easily in the receiving tray, thereby improving the stirring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural diagram of the appearance of a yellow tea fermentation and yellowing device of the utility model patent;

[0022] Figure 2 This is a three-dimensional structural diagram of the appearance of a yellow tea fermentation and yellowing device of the utility model patent (back side);

[0023] Figure 3 This is the internal structure diagram of a yellow tea fermentation and yellowing device of the utility model patent;

[0024] Figure 4 This is a structural diagram of a support assembly of a yellow tea fermentation and yellowing device of the utility model patent;

[0025] Figure 5 This utility model patent is a yellow tea fermentation and yellowing device Figure 4 A magnified image of point A;

[0026] Figure 6 This is a structural diagram of a containing plate of a yellow tea fermentation and yellowing device of the utility model patent.

[0027] The figure marks in the drawings of the specification include: box body 1, box door 11, switch 12, one-way ventilation valve 13, first bracket 21, second bracket 22, connecting rod 221, cylinder 222, accommodating frame 23, groove 231, accommodating plate 24, protrusion 241, ridge 242, nozzle 31, ventilation pipe 32, electric control regulating valve 33, water spray head 41, water pipe 42, water pump 43, heating pipe 51, heat exchanger 52. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1 , Figure 2As shown, a yellow tea fermentation and yellowing device comprises a box body 1, the front of the box body 1 is open, and a box door 11 is arranged at the opening, a heating pipe 51 for heating air is laid on the inner circumference of the box body 1, the end of the heating pipe 51 extends out of the box body 1 and is connected to a heat exchanger 52, a temperature sensor is installed inside the box body 1, and the heat exchanger 52 and the temperature sensor are electrically connected to a controller; when it is detected that the temperature inside the box body 1 is not suitable, the heat exchanger 52 is controlled to work, the medium in the heating pipe 51 is heated or cooled, and the temperature of the environment inside the box body 1 is controlled.

[0030] like Figure 3 As shown, a nozzle 31 for spraying hypoxic air upward is arranged at the bottom of the box 1, and the nozzle 31 is connected to a ventilation pipe 32. One end of the ventilation pipe 32 away from the nozzle 31 extends out of the box 1 and is connected to an electric control regulating valve 33 for controlling the gas flow. One end of the electric control regulating valve 33 away from the ventilation pipe 32 is connected to a high-pressure gas storage tank for releasing carbon dioxide gas; a water spray head 41 for spraying water mist is arranged at the bottom of the box 1, and is connected to a water pipe 42. One end of the water pipe 42 away from the nozzle 41 is connected to a water Pump 43, one end of the water pump 43 away from the water pipe 42 is connected to a water tank; a one-way vent valve 13 for exhausting gas is provided on the top of the box body 1; the electronically controlled regulating valve 33 and the water pump 43 are electrically connected to the controller, and a humidity sensor for detecting humidity is also installed in the box body 1. The electronically controlled regulating valve 33 adjusts the opening according to the fermentation stage and the temperature in the box body 1 to control the oxygen content and temperature inside the box body 1, and the water pump 43 works according to the detection information of the humidity sensor to control the humidity inside the box body 1.

[0031] like Figure 3 , Figure 4 As shown, a bracket assembly is installed in the box 1, and the bracket assembly includes a fixed first bracket 21 and a movable second bracket 22. The first bracket 21 and the second bracket 22 are both composed of two racks. The rack rod of the first bracket 21 is fixedly connected to the box 1 vertically, and the rack rod of the second bracket 22 is not fixedly connected to the box 1 and is movable. A connecting rod 221 is vertically fixed between the two rack rods in the second bracket 22, and a cylinder 222 is hinged on the connecting rod 221. One end of the cylinder 222 away from the connecting rod 221 is hinged to the bottom of the box 1, and the overall swing of the second rack rod can be controlled by the extension and retraction of the cylinder 222.

[0032] like Figure 4 , 5 As shown in FIG. 6 , four receiving devices for holding tea leaves are arranged vertically between the first bracket 21 and the second bracket 22. The receiving devices include a receiving frame 23. A plurality of ear plates are respectively arranged at both ends of the receiving frame 23. Figure 4As shown, the ear plates at both ends are hinged to the first bracket 21 and the second bracket 22 respectively, and a receiving tray 24 is placed on the receiving frame 23. The bottom of the receiving tray 24 is processed into a circular ring surface, and the axis of the circular ring surface is perpendicular to the swinging direction of the receiving tray 24, so that the tea leaves are more likely to slide in the receiving tray 24 due to the tendency of gravity during the swinging of the receiving tray 24; a plurality of convex ridges 242 are equidistantly arranged on the inner surface of the receiving tray 24, and the length direction of the convex ridges 242 is perpendicular to the swinging direction of the receiving tray 24, so that the agglomerated tea leaves are dispersed by the convex ridges 242 during the movement, thereby achieving a uniform stirring effect; the opening edge of the receiving tray 24 has a protrusion 241, and the receiving frame 23 is provided with a groove 231 for engaging the protrusion 241 of the receiving tray 24, and the receiving tray 24 is assembled on the receiving frame 23 by engaging. The bottom of the receiving tray 24 is provided with a plurality of ventilation holes that can only pass air but not tea leaves. On the one hand, the tea leaves at the bottom of the receiving tray 24 can also be fermented better. On the other hand, when the air jet head 31 is jetting, the tea leaves can be blown upward, so that the tea leaves can slide and be stirred more easily in the receiving tray 24, thereby improving the stirring efficiency.

[0033] From the above, it can be seen that the specific implementation of the utility model is as follows:

[0034] Place the tea leaves that need to be yellowed in the receiving tray 24 respectively, open the box door 11, place the receiving tray 24 on the receiving rack 23 that has been hinged and installed in the box body 1, then close the box door 11, turn on the switch 12 on the box door 11, and the program set in the controller controls the temperature sensor and the humidity sensor. The temperature sensor, the humidity sensor, the heat exchanger 52, the water pump 43, the cylinder 222, and the electronically controlled regulating valve 33 start to enter the working state, and the box body 1 is continuously filled with carbon dioxide gas to put the tea leaves in a low-oxygen fermentation environment. At the same time, the temperature sensor detects the temperature and transmits a signal to the controller. The controller controls the flow rate of carbon dioxide and the temperature of the heating tube 51 to adjust the fermentation temperature in the box body 1. The humidity sensor detects the humidity and transmits a signal to the controller. The controller controls the water pump 43 and then controls the sprinkler head 41 to start spraying water to adjust the fermentation humidity in the box body 1. At the same time, the controller also controls the cylinder 222 to regularly expand and contract, thereby controlling the first The second bracket 22 is movable, thereby controlling the entire containing device to swing. The tea leaves slide in the containing tray 24 due to the tendency of gravity, thereby being turned over and stirred, so that the tea leaves are in more sufficient contact with the ambient moisture and gas, thereby being more fully yellowed. Compared with the prior art, the tea leaves in the present device can be placed in different containing devices in batches, thereby increasing the contact area between the tea leaves and moisture and gas, thereby achieving a better yellowing effect. At the same time, the second bracket 22 in the present device is movably arranged, thereby driving the containing device to swing, thereby turning over and stirring the tea leaves in the containing device. Compared with the prior art solution of stirring by a stirring knife, the tea leaves are stirred by swinging in the present solution, thereby avoiding tearing damage to the tea leaves caused by shear force, thereby solving the technical problems in the prior art that tea leaves are piled up in a crowded space and are not in sufficient contact with air and moisture, and the stirring knife arranged inside is prone to damage the tea leaves, thereby affecting the quality of the finished tea leaves.

[0035] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A yellow tea fermentation device, comprising a box, characterized in that: A control device for controlling the ambient temperature and humidity is provided in the box, a bracket assembly is installed in the box, the bracket assembly includes a fixed first bracket and a movably arranged second bracket, a driving device for driving the second bracket to move is also provided in the box, and a plurality of accommodating devices for holding tea leaves are vertically arranged between the first bracket and the second bracket, and both ends of the accommodating devices are respectively hinged on the first bracket and the second bracket.

2. The device for yellow tea fermentation according to claim 1, characterized in that: The accommodating device comprises an accommodating frame, and a plurality of ear plates are respectively arranged at both ends of the accommodating frame, and the ear plates at both ends are respectively hinged to the first bracket and the second bracket, and an accommodating tray is placed on the accommodating frame.

3. The device for yellow tea fermentation according to claim 2, characterized in that: The inner bottom of the accommodating tray is processed into a circular surface, and the axis of the circular surface is perpendicular to the swinging direction of the accommodating tray.

4. The device for fermenting yellow tea according to claim 3, characterized in that: A plurality of ridges are equidistantly arranged on the inner surface of the accommodating tray, and the length direction of the ridges is perpendicular to the swinging direction of the accommodating tray.

5. The device for yellow tea fermentation according to claim 4, characterized in that: The bottom of the containing tray is provided with a plurality of ventilation holes which can only pass gas but not tea leaves.

6. The device for yellow tea fermentation according to claim 5, characterized in that: The second bracket includes two parallel racks, both racks are hinged to the accommodating device, a connecting rod is vertically fixed between the two racks, a cylinder is hinged on the connecting rod, and one end of the cylinder away from the connecting rod is hinged to the bottom of the box.

7. The device for yellow tea fermentation according to claim 6, characterized in that: A nozzle for spraying low-oxygen air upwards is arranged at the bottom of the box body, the nozzle is connected to a ventilation pipe, one end of the ventilation pipe away from the nozzle extends out of the box body and is connected to an electrically controlled regulating valve for controlling the gas flow, and one end of the electrically controlled regulating valve away from the ventilation pipe is connected to a high-pressure gas storage tank for releasing low-oxygen gas; a water spray head for spraying water mist is arranged at the bottom of the box body, and is connected to a water pipe, one end of the water pipe away from the water spray head is connected to a water pump, and one end of the water pump away from the water pipe is connected to a water tank; a one-way ventilation valve for discharging gas is arranged at the top of the box body.

8. The device for yellow tea fermentation according to claim 7, characterized in that: A heating pipe for heating air is laid on the inner circumferential surface of the box body, and an end of the heating pipe extends out of the box body and is connected to a heat exchanger.

9. The device for yellow tea fermentation according to claim 8, characterized in that: The control device comprises a temperature sensor and a humidity sensor installed inside the box body. The temperature sensor, the humidity sensor, the heat exchanger, the water pump, the cylinder, and the electric control regulating valve are all electrically connected to a controller installed on the box body.

Images