Stirring jet-propelled black tea fermentation device

Abstract

The utility model discloses a stirring jet type black tea fermentation device which comprises a transverse cylindrical fermentation tank body, a cylindrical rotating shaft is rotatably connected to the middle axis of the fermentation tank body, the cylindrical rotating shaft extends out of the fermentation tank body and is connected with a driven transmission wheel, and a plurality of vent holes are formed in the part, located in the fermentation tank body, of the cylindrical rotating shaft; the driven transmission wheel is in transmission connection with a driving transmission wheel through a transmission belt, and the driving transmission wheel is connected with a power mechanism. A rotating shaft of the cylinder is communicated with and connected with a ventilation pipeline; the ventilation pipeline is communicated with a constant-temperature fan and a humidifier; and a plurality of stirring fan blades are fixed on the periphery of the cylindrical rotating shaft along the circumferential direction. According to the utility model, tea leaves can be prevented from being accumulated at the bottom and can be in full contact with air, so that polyphenol substances are ensured to be fully oxidized, the temperature and humidity during fermentation are controlled, the tea leaves are convenient to feed and discharge, the labor is saved, and the quality of black tea is improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, and particularly to a stirring and jetting black tea fermentation device. Background Art

[0002] Black tea is a popular and commonly consumed beverage. One of the steps in black tea production is fermentation. The fermentation of black tea is essentially an oxidation process. During the fermentation process, polyphenolic substances in the tea leaves are converted into various characteristic oxidation products such as tea pigments under the action of polyphenol oxidase and peroxidase, thereby producing a unique aroma, taste, and flavor. Generally speaking, the temperature of black tea fermentation should be controlled at about 25 degrees, the humidity should be maintained above 90%, the time usually requires three to six hours, and attention should also be paid to the supply of oxygen during the fermentation process to ensure the full oxidation of polyphenolic substances. However, in order to facilitate loading, the existing fermentation devices usually adopt vertical fermentation tanks, such as a novel uniform stirring device for black tea fermentation disclosed in the utility model patent 2023230760662. However, the vertical setting will cause the tea leaves to pile up downward together, making it difficult for oxygen to come into full contact with the tea leaves, easily resulting in poor fermentation effect and uneven fermentation. Therefore, improvements are needed. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model proposes a stirring and jetting black tea fermentation device.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A stirring and jetting black tea fermentation device includes a horizontally cylindrical fermentation tank body. A cylindrical rotating shaft is rotatably connected at the central axis of the fermentation tank body. The cylindrical rotating shaft extends out of the fermentation tank body and is connected with a passive transmission wheel. A number of ventilation holes are formed in the part of the cylindrical rotating shaft inside the fermentation tank body. The passive transmission wheel is connected with an active transmission wheel through a transmission belt, and the active transmission wheel is connected with a power mechanism. The cylindrical rotating shaft is communicated and rotatably shaft-connected with a ventilation pipe, and the ventilation pipe is communicated with a constant temperature fan and a humidifier. An inlet is formed above the side of the fermentation tank body, and an outlet is formed at one side of the bottom. A push-pull cover plate is installed at the outlet. A number of stirring fan blades are fixedly arranged along the circumferential direction on the outer periphery of the cylindrical rotating shaft.

[0006] Further improvement: The stirring fan blades are arranged at an angle of 2-6° relative to the central axis of the cylindrical rotating shaft, so that when the stirring fan blades rotate, they drive the black tea to move towards the outlet direction.

[0007] Further improvement: The stirring fan blades are made of silica gel material.

[0008] Further improvement: An upwardly inclined guide pipe is formed at the inlet.

[0009] Further improvement: A hopper with an upward opening is installed on the fermentation tank body. An L-shaped discharge pipe is formed at the bottom of the hopper, and the discharge pipe is inserted into the guide pipe.

[0010] Further improvement: One side of the top of the hopper is hinged to one side of the top of the fermentation tank body.

[0011] Further improvement: The cylindrical rotating shaft and the ventilation pipe are rotatably connected through a bearing, and a seal is provided at the bearing.

[0012] Further improvement: Legs are installed at the bottom of the fermentation tank body.

[0013] Further improvement: The power mechanism is a motor.

[0014] Further improvement: A handle is installed on the push-pull cover plate.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model can prevent tea leaves from accumulating at the bottom, enabling the tea leaves to come into full contact with air, thereby ensuring the full oxidation of polyphenols. It also realizes the control of temperature and humidity during fermentation, facilitates the feeding and discharging of tea leaves, saves labor, and improves the quality of black tea. Description of the Drawings

[0017] The present utility model is further described with reference to the accompanying drawings, but the content in the drawings does not constitute any limitation to the present utility model.

[0018] Figure 1 It is a schematic side view structure of the present utility model when not in use;

[0019] Figure 2 It is a schematic side view structure of the present utility model when in use;

[0020] Figure 3 It is a schematic structure diagram of the discharge port. Specific Embodiments

[0021] In order to make the purpose, technical solutions and advantages of the utility model more clear, the following further detailed description of the present utility model is given in conjunction with the accompanying drawings and examples.

[0022] Example 1

[0023] As Figures 1 - 3A stirring jet black tea fermentation device shown in the figure includes a fermentation tank body 1, a cylindrical rotating shaft 2, a passive transmission wheel 3, ventilation holes 4, a transmission belt 5, an active transmission wheel 6, a power mechanism 7, a ventilation pipe 8, a constant temperature fan 9, a humidifier 10, a feed inlet 11, a discharge outlet 12, a push-pull cover plate 13, stirring fan blades 14, a material guiding pipe 15, a hopper 16, a discharge pipe 17, legs 18 and a handle 19.

[0024] Among them, the fermentation tank body 1 is in a cylindrical ring shape and is horizontally arranged. A cylindrical rotating shaft 2 is rotatably connected coaxially inside the fermentation tank body 1. A number of stirring fan blades 14 are fixed along the circumferential direction of the cylindrical rotating shaft 2 for stirring the tea leaves during the black tea fermentation. The cylindrical rotating shaft 2 extends outside the fermentation tank body 1 and is connected with a passive transmission wheel 3. The passive transmission wheel 3 is drivingly connected with an active transmission wheel 6 through a transmission belt 5. The active transmission wheel 6 is connected with a power mechanism 7, such as a motor. In this way, the cylindrical rotating shaft 2 can be driven to rotate by the power mechanism 7.

[0025] A number of ventilation holes 4 are formed in the part of the cylindrical rotating shaft 2 inside the fermentation tank body 1. The cylindrical rotating shaft 2 is communicated and rotatably connected with a ventilation pipe 8. The ventilation pipe 8 is communicated with a constant temperature fan 9 and a humidifier 10. In this way, the constant temperature fan 9 absorbs the outside air, then maintains its temperature at 25 °C, and after humidifying it to a humidity of more than 90% through the humidifier 10, it is blown into the fermentation tank body 1 through the ventilation pipe 8. At the same time, the cylindrical rotating shaft 2 drives the stirring fan blades 14 to rotate, so that the tea leaves are continuously driven by the stirring fan blades 14 to rotate along the fermentation tank body 1, making the polyphenols in the tea leaves fully combine with oxygen, thus achieving full fermentation.

[0026] After reaching the preset fermentation time, open the discharge outlet 12. Since the stirring fan blades 14 are arranged at an angle of 2 - 6° relative to the central axis of the cylindrical rotating shaft 2, when it drives the tea leaves to rotate, it will cause the tea leaves to have a tendency towards the discharge outlet 12 direction, so that they gradually flow out automatically from the discharge outlet.

[0027] Among them, one side of the top of the hopper 16 is hinged to one side of the top of the fermentation tank body 1. In this way, as Figure 1 shown, when not in use, it can be turned upside down to prevent dust, sand and the like from falling into it. When in use, as Figure 2 shown, just turn it over.

[0028] Among them, the stirring fan blades 14 are made of silica gel material to avoid the tea leaves being broken due to hard friction.

[0029] The material guiding pipe 15 is arranged to slope upwards for facilitating material guiding. An L-shaped discharge pipe 17 is formed at the bottom of the hopper 16, and the discharge pipe 17 is inserted into the material guiding pipe 15. The cylindrical rotating shaft 2 and the ventilation pipe 8 are rotatably connected through a bearing, and a seal is provided at the bearing. Legs 18 are also installed at the bottom of the fermentation tank body 1.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A stirring jet-type black tea fermentation device, characterized in that: The invention comprises a fermentation tank body (1) in a transverse cylindrical shape, wherein a cylindrical rotating shaft (2) is rotatably connected at the central axis of the fermentation tank body (1), the cylindrical rotating shaft (2) extends out of the fermentation tank body (1) and is connected to a passive transmission wheel (3), and a portion of the cylindrical rotating shaft (2) located inside the fermentation tank body (1) is formed with a plurality of ventilation holes (4); the passive transmission wheel (3) is transmission-connected to an active transmission wheel (6) through a transmission belt (5), and the active transmission wheel (6) is connected to a power mechanism (7); the cylindrical rotating shaft (2) is connected to a ventilation duct (8) and the rotating shaft is connected to the ventilation duct (8), and the ventilation duct (8) is connected to a constant temperature fan (9) and a humidifier (10); a feed inlet (11) is formed on the upper side of the fermentation tank body (1), and a discharge outlet (12) is formed on one side of the bottom, and a push-pull cover plate (13) is installed at the discharge outlet; a plurality of stirring blades (14) are fixed to the outer periphery of the cylindrical rotating shaft (2) along the circumferential direction.

2. The stirring jet-type black tea fermentation device according to claim 1, characterized in that: The stirring blades (14) are arranged at an angle of 2-6° relative to the central axis of the cylindrical rotating shaft (2), so that the rotation of the stirring blades (14) drives the black tea to move towards the discharge port (12).

3. The stirring jet-type black tea fermentation device according to claim 1, characterized in that: The stirring blade (14) is made of silica gel.

4. The stirring jet-type black tea fermentation device according to claim 1, characterized in that: An upwardly inclined material guide pipe (15) is formed at the material feed port (11).

5. The stirring jet-type black tea fermentation device according to claim 4, characterized in that: The fermentation tank body (1) is provided with a hopper (16) with an opening facing upward, and an L-shaped discharge pipe (17) is formed at the bottom of the hopper (16), and the discharge pipe (17) is inserted into the guide pipe (15).

6. The stirring jet-type black tea fermentation device according to claim 5, characterized in that: One side of the top of the hopper (16) is hingedly connected to one side of the top of the fermentation tank body (1).

7. The stirring jet-type black tea fermentation device according to any one of claims 1 to 6, characterized in that: The cylindrical rotating shaft (2) is rotatably connected to the ventilation pipe (8) via a bearing, and a seal is provided at the bearing.

8. The stirring jet-type black tea fermentation device according to any one of claims 1 to 6, characterized in that: The bottom of the fermentation tank body (1) is provided with supporting legs (18).

9. The stirring jet-type black tea fermentation device according to any one of claims 1 to 6, characterized in that: The power mechanism (7) is a motor.

10. The stirring jet-type black tea fermentation device according to any one of claims 1 to 6, characterized in that: A handle (19) is installed on the push-pull cover plate (13).

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