A method for warming withering of white tea and a withering device

Abstract

The present invention discloses a method and a device for warming and withering white tea, comprising: a mounting frame, a base is welded to the bottom end of the mounting frame; a withering cylinder, the withering cylinder passes through the mounting frame, and a feed pipe is inserted on the left end surface of the withering cylinder; a ventilation hood, the ventilation hood is welded and fixed on the outer side surface of the withering cylinder; an insertion pipe, one end of the insertion pipe is connected to a humidifier, and a partition plate is welded on the outer side surface of the insertion pipe; a support seat, a chute is arranged inside the support seat; a transmission wheel, the transmission wheels are symmetrically sleeved on the withering cylinder, and the transmission wheel comprises a disc and a convex platform. For this method and device for warming and withering white tea, the withering cylinder is driven to rotate by a gear and a transmission wheel, so that the tea leaves put into the cylinder are scattered, and the ventilation hood and the withering cylinder are used in cooperation to enable the tea leaves to move back and forth between the stirring chamber and the partition chamber, not only realizing the turning effect of the tea leaves, but also eliminating the need to flatten the tea leaves, making the tea leaves evenly heated and improving the withering effect of the tea leaves.

Description

Technical Field

[0001] The present invention relates to the technical field related to tea processing, and specifically to a method for warming and withering white tea and a withering device. Background Art

[0002] Withering is an important process in the production of fermented teas such as black tea, oolong tea, and white tea. It refers to the process of allowing the freshly harvested tea leaves to lose water over a period of time, causing the relatively brittle stems and leaves to wither. Withering involves both physical water loss and chemical changes in the internal substances.

[0003] Natural withering is greatly affected by the weather. In the prior art, tea leaves are usually spread on a withering device and heated with hot air for withering. However, the tea leaves spread together are not evenly heated, which affects the withering effect of the tea leaves. Manual turning is time-consuming and laborious, and mechanical turning easily leads to accumulation. Moreover, after the tea leaves are withered, it is necessary to stop the machine for discharging, which affects the tea processing efficiency. Summary of the Invention

[0004] In order to fill the market gap, the present invention provides a method for warming and withering white tea and a withering device.

[0005] The purpose of the present invention is to provide a method for warming and withering white tea and a withering device, so as to solve the problems mentioned in the above background art, that is, the tea leaves spread together are not evenly heated, which affects the withering effect of the tea leaves. Manual turning is time-consuming and laborious, mechanical turning easily leads to accumulation, and after the tea leaves are withered, it is necessary to stop the machine for discharging, which affects the tea processing efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A white tea warming withering device, comprising:

[0007] A mounting frame, the bottom end of the mounting frame is welded with a base, and heating blocks are evenly installed on the inner wall of the mounting frame;

[0008] A withering cylinder, the withering cylinder passes through the mounting frame, a feed pipe is inserted on the left end face of the withering cylinder, an insertion pipe is plugged on the right end face of the withering cylinder, and through holes are formed on the outer side surface of the withering cylinder;

[0009] A ventilation hood, the ventilation hood is welded and fixed on the outer side surface of the withering cylinder, the ventilation hood includes a mesh plate and a sealing plate, and a stirring cavity is formed inside the ventilation hood, and the stirring cavity communicates with the through holes;

[0010] An insertion pipe, one end of the insertion pipe is connected to a humidifier, a partition plate is welded on the outer side surface of the insertion pipe, and a partition cavity is formed between adjacent partition plates;

[0011] Support base, a chute is provided inside the support base, an opening is provided on one side of the support base close to the mounting frame, and a groove is formed at the bottom of the support base;

[0012] Drive wheels, the drive wheels are symmetrically sleeved on the withering cylinder, the drive wheels include discs and bosses, teeth are provided on the edge of the bosses, and the teeth are engaged with the gears.

[0013] Further, the mounting frame and the base form an Ω-shaped structure, the length of the mounting frame is less than the length of the withering cylinder, and the mounting frame and the withering cylinder are coaxial.

[0014] Further, a storage cavity is formed inside the withering cylinder, the storage cavity is communicated with the feed pipe, the through hole corresponds to the ventilation hood, a discharge port is provided on the bottom surface of the withering cylinder, the discharge port is close to the right end face of the withering cylinder, and the discharge port communicates with the rightmost partition cavity.

[0015] Further, the ventilation hoods are evenly distributed at the seven equal parts of the circumference of the withering cylinder, the net plate is bent to form a V-shaped structure, the sealing plate is in a triangular structure, and one stirring cavity communicates with the adjacent partition cavity.

[0016] Further, the partition plate is in a semi-circular ring structure, the circumferential surface of the partition plate is in contact with the inner wall of the withering cylinder, the partition plates are alternately installed up and down on the insertion pipes, the insertion pipes are in a right-angled structure, and a gap is left between the left end of the insertion pipe and the right port of the feed pipe.

[0017] Further, a disc is slidably installed in the chute, a gear is installed in the groove, a drive shaft is inserted at the center of the gear, and the drive shaft penetrates through the support base and is rotatably connected to the motor.

[0018] Further, the radius of the disc is greater than the radius of the boss, the boss extends out of the opening, and the drive wheel is welded to the outer wall of the withering cylinder.

[0019] A method for warming and withering white tea includes the following steps:

[0020] S1. Put fresh white tea leaves into the feed pipe so that the tea leaves fall into the storage cavity along the feed pipe;

[0021] S2. The gear drives the drive wheel to rotate, the drive wheel drives the withering cylinder to rotate, so that the tea leaves are shaken loose and fall into the stirring cavity from the through hole;

[0022] S3. The heating block is powered on to raise the temperature to 30 - 35 °C. As the withering cylinder drives the ventilation hood to rotate, the hot air generated passes through the net plate to wither the tea leaves in the stirring cavity;

[0023] S4. When the ventilation hood rotates to the top of the withering cylinder, the tea leaves in the stirring chamber fall back into the partition through the through holes, and the humidifier is started to input water vapor into the storage chamber along the inserting pipe to maintain the humidity during the withering process, with a relative humidity of 25% - 45%;

[0024] S5. The tea leaves circulate through steps S3 and S4, causing the tea leaves to be continuously conveyed to the right. The tea leaves are discharged from the discharge port, and the discharged tea leaves are re-added to the feed pipe, repeating 4 - 6 times.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: For this white tea warming withering method and withering device, the gear and transmission wheel are used to drive the withering cylinder to rotate, so that the tea leaves put into the cylinder are scattered. The ventilation hood and the withering cylinder are coordinated to make the tea leaves move back and forth between the stirring chamber and the partition chamber, not only achieving the effect of turning the tea leaves, but also not requiring the tea leaves to be flattened, making the tea leaves evenly heated and improving the withering effect of the tea leaves. The inserting pipe and the partition form a partition chamber, enabling the tea leaves to achieve the effect of continuous forward conveyance during the withering process, avoiding shutdown during the processing, and improving the processing efficiency of the tea leaves;

[0026] 1. Seven ventilation hoods are installed on the withering cylinder. As the withering cylinder rotates, when the ventilation hood moves to the lowermost side, the tea leaves in the withering cylinder fall into the ventilation hood. When the ventilation hood moves to the uppermost side, the tea leaves in the ventilation hood fall back into the withering cylinder to turn the tea leaves and make the tea leaves evenly heated;

[0027] 2. The ventilation hood is composed of a mesh plate and a sealing plate. The withering cylinder drives the ventilation hood to rotate, forming a fan-shaped structure, thereby generating an air flow. The hot air flow passes through the mesh plate and enters the stirring chamber to contact the tea leaves. Description of the Drawings

[0028] Figure 1 It is a front view schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a side sectional view schematic diagram of the structure of the present invention;

[0030] Figure 3 It is a front sectional view schematic diagram of the structure of the present invention;

[0031] Figure 4 It is an inserting pipe schematic diagram of the structure of the present invention;

[0032] Figure 5 It is a side view schematic diagram of the support seat of the structure of the present invention;

[0033] Figure 6 It is a ventilation hood schematic diagram of the structure of the present invention.

[0034] In the figure: 1, mounting bracket; 2, withering cylinder; 3, ventilation hood; 4, insertion tube; 5, humidifier; 6, support base; 7, transmission wheel; 11, heating block; 12, base; 21, feed pipe; 22, through hole; 23, discharge port; 24, storage cavity; 31, mesh plate; 32, sealing plate; 33, stirring cavity; 41, partition plate; 42, partition cavity; 61, sliding groove; 62, opening; 63, groove; 71, disc; 72, boss; 73, gear; 74, drive shaft; 75, tooth. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Specific embodiment 1: Please refer to Figures 1-6 , the present invention provides a technical solution: a white tea warming and withering device, including:

[0037] Mounting bracket 1, the bottom end of the mounting bracket 1 is welded with a base 12, and heating blocks 11 are evenly installed on the inner wall of the mounting bracket 1;

[0038] Withering cylinder 2, the withering cylinder 2 passes through the mounting bracket 1, a feed pipe 21 is inserted on the left end surface of the withering cylinder 2, an insertion tube 4 is inserted on the right end surface of the withering cylinder 2, and through holes 22 are opened on the outer side surface of the withering cylinder 2;

[0039] Ventilation hood 3, the ventilation hood 3 is welded and fixed on the outer side surface of the withering cylinder 2, the ventilation hood 3 includes a mesh plate 31 and a sealing plate 32, and a stirring cavity 33 is formed inside the ventilation hood 3, and the stirring cavity 33 communicates with the through holes 22;

[0040] Insertion tube 4, one end of the insertion tube 4 is connected to a humidifier 5, a partition plate 41 is welded on the outer side surface of the insertion tube 4, and partition cavities 42 are formed between adjacent partition plates 41;

[0041] Support base 6, a sliding groove 61 is opened inside the support base 6, an opening 62 is opened on the surface of the support base 6 close to the mounting bracket 1, and a groove 63 is formed at the bottom of the support base 6;

[0042] Transmission wheel 7, the transmission wheels 7 are symmetrically sleeved on the withering cylinder 2, the transmission wheel 7 includes a disc 71 and a boss 72, teeth 75 are provided at the edge of the boss 72, and the teeth 75 are engaged with a gear 73.

[0043] When using this white tea warming and withering device, fresh tea leaves are put into the feed pipe 21, and the tea leaves fall into the withering cylinder 2. The motor drives the drive shaft 74 to rotate, the drive shaft 74 drives the gear 73 to rotate, and the gear 73 drives the withering cylinder 2 to rotate through the transmission wheel 7. The withering cylinder 2 drives the ventilation hood 3 to rotate to generate air flow. At the same time, the heating block 11 on the mounting frame 1 is powered on to increase the temperature. When the ventilation hood 3 moves to directly below the withering cylinder 2, the tea leaves fall into the ventilation hood 3 from the through hole 22. As the ventilation hood 3 moves, the hot air flow contacts the tea leaves through the mesh plate 31. When the ventilation hood 3 moves to directly above the withering cylinder 2, the tea leaves fall back into the withering cylinder 2. The tea leaves alternate back and forth between the withering cylinder 2 and the ventilation hood 3, realizing the effect of turning and mixing the tea leaves, ensuring that the tea leaves are evenly heated, improving the product quality. And under the action of the partition plate 41, the tea leaves move in the partition cavity 42, realizing the effect of continuously conveying the tea leaves. The partition plate 41 remains fixed during the conveying process. The humidifier 5 injects water vapor into the withering cylinder 2 through the insertion pipe 4 to maintain the humidity in the withering cylinder 2. When the tea leaves move to the rightmost partition cavity 42, the withered tea leaves will be discharged out of the cylinder through the discharge port 23. At this time, the feed pipe 21 feeds fresh tea leaves inward, realizing continuous processing of the tea leaves and avoiding shutdown operation.

[0044] Specific Embodiment 2: This embodiment is a further limitation of Specific Embodiment 1. As Figure 1 , Figure 2 and Figure 3 shown, the mounting frame 1 and the base 12 form an Ω-shaped structure. The length of the mounting frame 1 is less than the length of the withering cylinder 2. The mounting frame 1 and the withering cylinder 2 are coaxial at the center. The distance between the semi-circular mounting frame 1 and the circular withering cylinder 2 is the same, which helps the tea leaves to be evenly heated. And the size of the withering cylinder 2 is relatively long. The temperature at both ends of the withering cylinder 2 is lower than that at the central part, forming different temperature difference regions, avoiding the influence of sudden temperature change on the quality of the tea leaves. The existing withering process of white tea is carried out by alternately blowing hot air and stopping blowing. Generally, hot air is blown for 1 h and stopped blowing for 10 min. And 20 min before feeding the leaves, it is advisable to stop heating and change to blowing cold air to reduce the leaf temperature. The gradient temperature region formed by this device enables the tea leaves to achieve an automatic cooling effect when passing through.

[0045] Specific Embodiment 3: This embodiment is a further limitation of Specific Embodiment 1. As Figure 3 shown, a storage cavity 24 is formed inside the withering cylinder 2. The storage cavity 24 is communicated with the feed pipe 21. The through hole 22 corresponds to the ventilation hood 3. A discharge port 23 is opened on the bottom surface of the withering cylinder 2. The discharge port 23 is close to the right end face of the withering cylinder 2. The discharge port 23 is communicated with the rightmost partition cavity 42. The withered tea leaves are wilted, so the tea leaves will not be broken when colliding in the partition cavity 42.

[0046] Embodiment 4: This embodiment is a further limitation of Embodiment 1. The ventilation hoods 3 are evenly distributed at seven equal parts on the circumference of the withering cylinder 2. The net plate 31 is bent to form a V-shaped structure, and the sealing plate 32 is in a triangular structure. One stirring cavity 33 communicates with adjacent partition cavities 42. The opening of the V-shaped stirring cavity 33 is relatively large, facilitating the entry and exit of tea leaves.

[0047] Embodiment 5: This embodiment is a further limitation of Embodiment 1. As Figure 3 and Figure 4 shown, the partition plate 41 is in a semi-circular ring structure. The circumferential surface of the partition plate 41 is in contact with the inner wall of the withering cylinder 2. The partition plates 41 are alternately installed above and below on the insertion tube 4. The insertion tube 4 is in a right-angled structure. There is a gap between the left end of the insertion tube 4 and the right port of the feed pipe 21. The partition cavity 42 above the insertion tube 4 communicates with the partition cavity 42 below the insertion tube 4. When the tea leaves fall from the upper ventilation hood 3 into the upper partition cavity 42, the tea leaves are divided into two parts and respectively fall into the two lower partition cavities 42, achieving the effect of tea leaf transportation.

[0048] Embodiment 6: This embodiment is a further limitation of Embodiment 1. A disc 71 is slidably installed in the chute 61, and a gear 73 is installed in the groove 63. A driving shaft 74 is inserted at the center of the gear 73. The driving shaft 74 passes through the support base 6 and is rotatably connected to the motor. The chute 61 not only provides a moving space for the disc 71 but also restricts the position of the disc 71, providing a supporting effect on the withering cylinder 2.

[0049] Embodiment 7: This embodiment is a further limitation of Embodiment 1. The radius of the disc 71 is greater than the radius of the convex platform 72. The convex platform 72 extends out of the opening 62. The transmission wheel 7 is welded to the outer wall of the withering cylinder 2. The part of the convex platform 72 passing through the opening 62 is engaged with the gear 73, facilitating the driving of the withering cylinder 2 to rotate.

[0050] Embodiment 8: A method for warming and withering white tea includes the following steps:

[0051] S1. Put fresh white tea leaves into the feed pipe 21, and make the tea leaves fall along the feed pipe 21 into the storage cavity 24;

[0052] S2. The gear 73 drives the transmission wheel 7 to rotate, and the transmission wheel 7 drives the withering cylinder 2 to rotate, causing the tea leaves to be shaken loose and fall from the through hole 22 into the stirring cavity 33;

[0053] S3. The heating block 11 is powered on to raise the temperature to 30 - 35 °C. As the withering cylinder 2 drives the ventilation hood 3 to rotate, the hot air generated passes through the net plate 31 to wither the tea leaves in the stirring cavity 33;

[0054] S4. When the ventilation hood 3 rotates to the top of the withering cylinder 2, the tea leaves in the stirring chamber 33 fall back into the partition 41 through the through hole 22. Start the humidifier 5 to make the water vapor enter the storage chamber 24 along the insertion tube 4, maintaining the humidity during the withering process, with a relative humidity of 25% - 45%.

[0055] S5. The tea leaves circulate through steps S3 and S4, causing the tea leaves to be continuously conveyed to the right. The tea leaves are discharged from the discharge port 23, and the discharged tea leaves are re-added to the feed pipe 21 and repeated 4 - 6 times.

[0056] The temperature and humidity in the withering cylinder 2 are both distributed in a gradient. The closer to the mounting frame 1, the higher the temperature and the lower the humidity. The withered tea leaves are discharged from the discharge port 23, facilitating the adjustment of temperature and humidity parameters according to the state of the tea leaves and determining the number of repetitions according to the actual situation.

[0057] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A white tea warming withering device, characterized in that, Comprising: A mounting frame (1), at the bottom end of the mounting frame (1) is welded a base (12), and heating blocks (11) are evenly installed on the inner wall of the mounting frame (1); A withering cylinder (2), the withering cylinder (2) passes through the mounting frame (1), a feed pipe (21) is inserted on the left end face of the withering cylinder (2), an insertion pipe (4) is plugged on the right end face of the withering cylinder (2), and through holes (22) are formed on the outer side surface of the withering cylinder (2); A ventilation hood (3), the ventilation hood (3) is welded and fixed on the outer side surface of the withering cylinder (2), the ventilation hood (3) includes a mesh plate (31) and a sealing plate (32), a stirring cavity (33) is formed inside the ventilation hood (3), and the stirring cavity (33) communicates with the through hole (22); An insertion pipe (4), one end of the insertion pipe (4) is connected to a humidifier (5), a partition plate (41) is welded on the outer side surface of the insertion pipe (4), and a partition cavity (42) is formed between adjacent partition plates (41); A support seat (6), a chute (61) is formed inside the support seat (6), an opening (62) is formed on the surface of the support seat (6) close to the mounting frame (1), and a groove (63) is formed at the bottom of the support seat (6); a disc (71) is slidably installed in the chute (61), a gear (73) is installed in the groove (63), a driving shaft (74) is inserted at the center of the gear (73), and the driving shaft (74) penetrates through the support seat (6) and is rotationally connected to a motor; A transmission wheel (7), the transmission wheels (7) are symmetrically sleeved on the withering cylinder (2), the transmission wheel (7) includes a disc (71) and a boss (72), teeth (75) are arranged on the edge of the boss (72), and the teeth (75) are engaged with the gear (73).

2. The white tea warming withering device according to claim 1, characterized in that: The mounting frame (1) and the base (12) form an Ω-shaped structure, the length of the mounting frame (1) is less than the length of the withering cylinder (2), and the centers of the mounting frame (1) and the withering cylinder (2) are coaxial.

3. The white tea warming withering device according to claim 1, characterized in that: A storage cavity (24) is formed inside the withering cylinder (2), the storage cavity (24) communicates with the feed pipe (21), the through hole (22) corresponds to the ventilation hood (3), a discharge port (23) is formed on the bottom surface of the withering cylinder (2), the discharge port (23) is close to the right end face of the withering cylinder (2), and the discharge port (23) communicates with the rightmost partition cavity (42).

4. The white tea warming withering device according to claim 1, characterized in that: The ventilation hoods (3) are evenly distributed at the seven equal parts of the circumference of the withering cylinder (2), the mesh plate (31) is bent to form a V-shaped structure, the sealing plate (32) is in a triangular structure, and one stirring cavity (33) communicates with adjacent partition cavities (42).

5. The white tea warming withering device according to claim 1, characterized in that: The partition plate (41) is in a semi-circular ring structure, the circumferential surface of the partition plate (41) is in contact with the inner wall of the withering cylinder (2), the partition plates (41) are alternately installed up and down on the insertion pipe (4), the insertion pipe (4) is in a right-angled structure, and a gap is left between the left end of the insertion pipe (4) and the right port of the feed pipe (21).

6. The white tea warming withering device according to claim 1, characterized in that: The radius of the disc (71) is greater than the radius of the boss (72). The boss (72) projects out of the opening (62), and the transmission wheel (7) is welded to the outer wall of the withering cylinder (2).

7. A withering method for a white tea heating withering device as described in claim 1, characterized in that, Comprising the following steps: S1. Put fresh white tea leaves into the feed pipe (21) so that the tea leaves fall into the storage cavity (24) along the feed pipe (21). S2. The gear (73) drives the transmission wheel (7) to rotate, and the transmission wheel (7) drives the withering cylinder (2) to rotate, so that the tea leaves are shaken loose and fall into the stirring cavity (33) from the through hole (22). S3. The heating block (11) is powered on to raise the temperature to 30 - 35 °C. As the withering cylinder (2) drives the ventilation hood (3) to rotate, the hot air generated passes through the mesh plate (31) to wither the tea leaves in the stirring cavity (33). S4. When the ventilation hood (3) rotates to the top of the withering cylinder (2), the tea leaves in the stirring cavity (33) fall back into the partition (41) from the through hole (22). Start the humidifier (5) so that the water vapor is input into the storage cavity (24) along the insertion pipe (4) to maintain the humidity during the withering process, with a relative humidity of 25% - 45%. S5. The tea leaves circulate through steps S3 and S4, so that the tea leaves are continuously conveyed to the right. The tea leaves are discharged from the discharge port (23), and the discharged tea leaves are re-added to the feed pipe (21), repeating 4 - 6 times.

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