Green tea processing method
By using a vibratory heating and extrusion process and a screening and cleaning device, the problem of tea leaves accumulating and scorching in the blast furnace is solved, achieving efficient and automated green tea processing and producing high-quality flat tea leaves.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 曹金平
- Filing Date
- 2023-09-23
- Publication Date
- 2026-04-17
AI Technical Summary
Existing scorching machines are prone to causing tea leaves to accumulate during green tea processing, resulting in the tea leaves sticking to the inner wall of the machine and becoming scorched. This requires manual cleaning, and the traditional manual method is inefficient.
The process employs vibration-driven heating and extrusion, using a forming arc plate and material shovel in the processing device to simulate the effect of manual roasting, preventing tea leaves from piling up. The tea leaves are then sieved and cleaned using a sieve cylinder and cleaning brush. The tea leaves are heated and extruded using a combination of electric heating wire and springs.
It effectively prevents tea leaves from piling up, improves processing efficiency, avoids scorching of tea leaves, forms high-quality flat tea leaves, and simplifies manual cleaning.
Smart Images
Figure CN121867290A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of green tea processing, and particularly relates to a green tea processing method. Background Technology
[0002] Green tea is an unfermented tea, retaining its unique original flavor and characteristic green leaves and green liquor. Drinking green tea not only has the effects of refreshing the mind, clearing heat and relieving summer heat, aiding digestion and resolving phlegm, reducing greasiness and promoting weight loss, detoxifying and sobering up, quenching thirst, reducing internal heat and improving eyesight, and stopping diarrhea and removing dampness, but also has certain medicinal functions against modern diseases such as radiation sickness, cardiovascular and cerebrovascular diseases, and cancer. Varieties of green tea include Longjing green tea, Biluochun green tea, and Huangshan Maofeng green tea.
[0003] West Lake Longjing tea is mostly flat in shape. There are two methods for making Longjing tea: one is the manual pressing method, which produces high-quality Longjing tea but is inefficient; the other is the machine pressing method, which uses a turning, heating and pressing method to flatten the tea leaves. However, after a long period of turning and pressing, tea leaves will accumulate on the edge of the pressing machine and stick to the inner wall of the machine, making them easy to burn and requiring manual cleaning. Summary of the Invention
[0004] In view of this, the technical problem to be solved by the present invention is to provide a green tea processing method that can perform vibration heating and extrusion treatment on tea leaves to prevent tea leaves from piling up during the final roasting process.
[0005] This invention provides a method for processing green tea, which includes the following steps:
[0006] Step 1: Spread the freshly picked tea leaves out to cool;
[0007] Step 2: Add the cooled tea leaves to the processing device;
[0008] Step 3: The cooled tea leaves are dried and sorted using a processing device;
[0009] Step 4: The dried tea leaves are subjected to vibration-heated extrusion to flatten them, and the extruded tea leaves are then sorted.
[0010] Step 5: The flattened tea leaves are the finished Longjing tea, while the unformed tea leaves are pushed back into the processing device for further heating and pressing.
[0011] Step Six: Collect and package the finished products.
[0012] The vibration heating and extrusion time is 12-15 minutes.
[0013] The vibration-induced heating and extrusion temperature is 100℃-120℃.
[0014] The processing device includes a processing vessel, a drying cylinder fixedly connected to the processing vessel, a sieve cylinder rotatably connected to the drying cylinder, a sieve cylinder having multiple sieve slots, a feed hopper fixedly connected to the upper end of the drying cylinder, a rotating frame fixedly connected to the sieve cylinder, two sliding rods slidably connected to the rotating frame, and a material shovel fixedly connected to the lower end of the two sliding rods. The bottom of the material shovel is arc-shaped and can be fastened to the inner wall of the processing vessel. A first spring is sleeved on each of the two sliding rods, and the first spring is located between the material shovel and the rotating frame. A limiting rod is fixedly connected to the processing vessel, and a forming arc plate is slidably connected to the limiting rod. A second spring is sleeved on the limiting rod, and the second spring is located between the forming arc plate and the processing vessel. Heating wires are fixed on both the forming arc plate and the drying cylinder, and an angle is formed between the lower end of the forming arc plate and the material shovel.
[0015] A sieve box is fixedly connected to the processing kettle, and multiple sieve grooves are provided on the sieve box.
[0016] Multiple cleaning brushes are fixedly connected to the lower end of the formed arc plate, and the multiple cleaning brushes are inserted into multiple slots respectively. Attached Figure Description
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.
[0018] Figure 1 and Figure 2 A flowchart of a green tea processing method;
[0019] Figure 3 and Figure 4 This is a schematic diagram of the overall structure of the processing device;
[0020] Figure 5 This is a schematic diagram of the storage bin.
[0021] Figure 6 This is a cross-sectional view of the storage bin.
[0022] Figure 7 This is a schematic diagram of the processing vessel;
[0023] Figure 8 This is a cross-sectional view of the drying cylinder.
[0024] Figure 9 This is a schematic diagram of the material shovel structure;
[0025] Figure 10 This is a schematic diagram of the arc-shaped rack structure. Detailed Implementation
[0026] The present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention.
[0027] A method for processing green tea includes the following steps:
[0028] Step 1: Spread the freshly picked tea leaves out to cool;
[0029] Step 2: Add the cooled tea leaves to the processing device;
[0030] Step 3: The cooled tea leaves are dried and sorted using a processing device;
[0031] Step 4: The dried tea leaves are subjected to vibration-heated extrusion to flatten them, and the extruded tea leaves are then sorted.
[0032] Step 5: The flattened tea leaves are the finished Longjing tea, while the unformed tea leaves are pushed back into the processing device for further heating and pressing.
[0033] Step Six: Collect and package the finished products.
[0034] The vibration heating and extrusion time is 15 minutes.
[0035] The vibration-heated extrusion temperature is 110℃.
[0036] See Figure 7-10 The diagram illustrates how the tea leaves can be prevented from accumulating during the final firing process according to the present invention. Further,
[0037] The processing device includes a processing vessel 101, a drying cylinder 102 fixedly connected to the processing vessel 101 by bolts, a sieve cylinder 104 rotatably connected to the drying cylinder 102 by bearings, the sieve cylinder 104 having multiple sieve slots, a feed hopper 103 fixedly connected to the upper end of the drying cylinder 102 by bolts, a rotating frame 402 fixedly connected to the sieve cylinder 104 by bolts, two sliding rods 403 slidably connected to the rotating frame 402, and a material shovel 401 fixedly connected to the lower end of the two sliding rods 403 by bolts. The bottom of the material shovel 401 is arc-shaped and can be fastened to the processing vessel 101. On the inner wall, two sliding rods 403 are each fitted with a first spring 404. The first spring 404 is located between the material shovel 401 and the rotating frame 402. A limit rod 206 is fixedly connected to the processing vessel 101 by bolts. A forming arc plate 201 is slidably connected to the limit rod 206. A second spring 205 is fitted on the limit rod 206. The second spring 205 is located between the forming arc plate 201 and the processing vessel 101. Heating wires are fixed to both the forming arc plate 201 and the drying cylinder 102 by bolts. An angle is formed between the lower end of the forming arc plate 201 and the material shovel 401.
[0038] The processing pot 101 is used to hold green tea, the drying cylinder 102 is used to dry the tea leaves, the sieve cylinder 104 is used to sieve the dried and undried tea leaves, and the shovel 401 can scoop up the tea leaves at the bottom of the processing pot 101.
[0039] When using the processing device, the operator first adds the tea leaves to be processed into the drying cylinder 102 through the feed hopper 103. Then, the heating wire on the drying cylinder 102 is energized to heat the tea leaves. As the amount of tea leaves in the drying cylinder 102 increases, the tea leaves slide down the inclined surface of the drying cylinder 102 into the sieve cylinder 104. At this time, by controlling the rotation of the sieve cylinder 104, the tea leaves are tumbled, thus ensuring even heating. At the same time, the sieve grooves on the sieve cylinder 104 allow for air circulation, allowing the moisture and flavor in the tea leaves to dissipate. When the moisture in the tea leaves decreases, the tea leaves shrink, thus reducing their volume. Finally, the qualified dried tea leaves are discharged from the sieve grooves under the tumbling action, and the discharged tea leaves fall into the processing kettle 101.
[0040] The sieve cylinder 104 rotates continuously, driving the rotating frame 402 to rotate simultaneously. The rotating frame 402 drives the material shovel 401 to rotate around the axis of the sieve cylinder 104. When the material shovel 401 contacts the inner wall of the processing vessel 101, it will be tightly fastened to the inner wall of the processing vessel 101 under the action of the two first springs 404. As the sieve cylinder 104 rotates, the material shovel 401 will catch the tea leaves that have fallen to the bottom of the processing vessel 101 and drag them upward along the inner wall of the processing vessel 101. When the material shovel 401 moves onto the forming arc plate 201, the forming arc plate 201 is energized. The tea leaves are heated, and then the forming arc plate 201 is controlled to slide back and forth along the direction of the limiting rod 206 on the processing kettle 101. The forming arc plate 201 and the material shovel 401 work together to squeeze the tea leaves, thereby achieving the effect of heating and flattening the tea leaves. As the tea leaves are squeezed, the tea leaves in the forming arc plate 201 will automatically slide down. When the forming arc plate 201 moves back and forth, its lower end will form an angle with the material shovel 401, further squeezing the tea leaves. Finally, the flattened tea leaves will fall through the gap between the forming arc plate 201 and the material shovel 401. After multiple heating and squeezing processes, Longjing tea is formed.
[0041] The interaction between the forming arc plate 201 and the material spatula 401 can simulate the effect of traditional manual simmering. As the forming arc plate 201 slides back and forth, it can cause the material spatula 401 to collide and vibrate, thereby shaking off the tea leaves adhering to the inner wall of the forming arc plate 201, thus preventing the tea leaves from accumulating on the forming arc plate 201 and causing them to burn.
[0042] See Figure 4 This diagram illustrates an embodiment of the present invention in which the reciprocating motion of the forming arc plate 201 enables the sieving and cleaning of tea leaves. Further,
[0043] A sieve box 203 is fixedly connected to the processing kettle 101 by bolts, and multiple sluices 204 are provided on the sieve box 203.
[0044] When the forming arc plate 201 moves backward, the tea leaves between the forming arc plate 201 and the material shovel 401 will fall onto the sieve box 203. Flat tea leaves will be discharged through multiple troughs 204, while non-flat tea leaves will be isolated in the sieve box 203. When the forming arc plate 201 slides forward, it will push the non-flat tea leaves on the sieve box 203 back into the processing kettle 101 for further processing. Thus, the reciprocating motion of the forming arc plate 201 can be used to achieve the functions of sieving and cleaning tea leaves.
[0045] See Figure 7 A schematic diagram of an embodiment of the invention capable of cleaning multiple drains 204 is shown, further,
[0046] Multiple cleaning brushes 202 are fixedly connected to the lower end of the formed arc plate 201 by bolts, and the multiple cleaning brushes 202 are inserted into multiple slots 204 respectively.
[0047] When the forming arc plate 201 slides forward, multiple cleaning brushes 202 move along with the forming arc plate 201. The multiple cleaning brushes 202 can clean the multiple slots 204 respectively, preventing tea leaves from getting stuck in the multiple slots 204 and causing blockage. At the same time, the multiple cleaning brushes 202 also play the role of pushing the unformed tea leaves forward.
[0048] See Figure 7 A schematic diagram of an embodiment of the present invention capable of driving the forming arc plate 201 to reciprocate is shown. Further,
[0049] An arc-shaped rack 405 is fixedly connected to the rotating frame 402 by bolts, a contact rod 301 is fixedly connected to the forming arc plate 201 by bolts, a cam 302 is rotatably connected to the side wall of the processing vessel 101 by bearings, and a first gear 303 is fixedly connected to the cam 302 by a key.
[0050] When the rotating frame 402 rotates, it drives the arc-shaped rack 405 to rotate around the axis of the screen cylinder 104. When the arc-shaped rack 405 meshes with the first gear 303, the material shovel 401 is aligned and close to the forming arc plate 201. When the arc-shaped rack 405 continues to rotate, it drives the first gear 303 to rotate. In turn, the first gear 303 drives the cam 302 to rotate. When the protruding part of the cam 302 contacts the contact rod 301, the contact rod 301 drives the forming arc plate 201 to slide backward. When the protruding part of the cam 302 disengages from the contact rod 301, the forming arc plate 201 automatically resets under the elastic action of the second spring 205, thus realizing the function of reciprocating movement of the forming arc plate 201 without the need to equip the forming arc plate 201 with a separate drive source.
[0051] When the material shovel 401 disengages from the forming arc plate 201, the arc rack 405 disengages from the first gear 303, and the forming arc plate 201 no longer moves, thus avoiding the forming arc plate 201 from doing useless work.
[0052] See Figure 6 A schematic diagram of an embodiment of the invention capable of automatic feeding is shown. Further,
[0053] The upper end of the processing vessel 101 is fixedly connected to a storage box 501 by bolts. The bottom of the storage box 501 is provided with an opening. Inside the storage box 501, a distributing roller 502 is rotatably connected by a bearing.
[0054] Fresh tea leaves are added to the storage bin 501. Then, by controlling the rotation of the distributing roller 502, the tea leaves sandwiched between the blades of the distributing roller 502 will automatically fall into the feed hopper 103 through the opening, realizing the function of automatic feeding. The distributing roller 502 can add a fixed amount of tea leaves at one time.
[0055] See Figure 5 The diagram shows a schematic representation of an embodiment of the invention that enables intermittent feeding. Further,
[0056] A second gear 503 is fixedly connected to the distributing roller 502 by bolts. When the arc-shaped rack 405 rotates to the top, the arc-shaped rack 405 meshes with the second gear 503, thereby driving the distributing roller 502 to rotate and realize the automatic feeding function. When the arc-shaped rack 405 disengages from the second gear 503, the distributing roller 502 stops rotating and no longer feeds, thus realizing the intermittent feeding function.
[0057] At this time, the material shovel 401 is located between the storage box 501 and the feed hopper 103. As a result, the falling tea leaves will automatically slide down the inclined surface of the material shovel 401 into the feed hopper 103. The material shovel 401 plays the role of guiding the material and preventing the tea leaves from falling to other places.
[0058] See Figure 3 A schematic diagram of an embodiment of the present invention capable of driving the sieve cylinder 104 to rotate is shown. Further,
[0059] A drive motor 105 is fixedly connected to the processing vessel 101 by bolts, and a screen cylinder 104 is fixedly connected to the output shaft of the drive motor 105 by a coupling.
[0060] The function of processing tea is achieved by controlling the drive motor 105 to drive the screen cylinder 104 to rotate.
Claims
1. A method for processing green tea, characterized in that, Includes the following steps: Step 1: Spread the freshly picked tea leaves out to cool; Step 2: Add the cooled tea leaves to the processing device; Step 3: The cooled tea leaves are dried and sorted using a processing device; Step 4: The dried tea leaves are subjected to vibration-heated extrusion to flatten them, and the extruded tea leaves are then sorted. Step 5: The flattened tea leaves are the finished Longjing tea, while the unformed tea leaves are pushed back into the processing device for further heating and pressing. Step Six: Collect and package the finished products.
2. The green tea processing method according to claim 1, characterized in that: The vibration heating and extrusion time is 12-15 minutes.
3. The green tea processing method according to claim 2, characterized in that: The vibration-induced heating and extrusion temperature is 100℃-120℃.
4. The green tea processing method according to claim 3, characterized in that: The processing device includes a processing vessel (101), a drying cylinder (102) fixedly connected to the processing vessel (101), a sieve cylinder (104) rotatably connected to the drying cylinder (102), a sieve cylinder (104) having multiple sieve slots, a feed hopper (103) fixedly connected to the upper end of the drying cylinder (102), a rotating frame (402) fixedly connected to the sieve cylinder (104), two sliding rods (403) slidably connected to the rotating frame (402), and a material shovel (401) fixedly connected to the lower end of the two sliding rods (403). The bottom of the material shovel (401) is arc-shaped and can be fastened to the inner wall of the processing vessel (101). A first spring (404) is fitted on each rod (403). The first spring (404) is located between the material shovel (401) and the rotating frame (402). A limiting rod (206) is fixedly connected to the processing vessel (101). A forming arc plate (201) is slidably connected to the limiting rod (206). A second spring (205) is fitted on the limiting rod (206). The second spring (205) is located between the forming arc plate (201) and the processing vessel (101). Heating wires are fixed on both the forming arc plate (201) and the drying cylinder (102). An angle is formed between the lower end of the forming arc plate (201) and the material shovel (401).
5. A green tea processing method according to claim 4, characterized in that: A sieve box (203) is fixedly connected to the processing kettle (101), and a plurality of sluice boxes (204) are provided on the sieve box (203).
6. A green tea processing method according to claim 5, characterized in that: The lower end of the formed arc plate (201) is fixedly connected with multiple cleaning brushes (202), and the multiple cleaning brushes (202) are respectively inserted into multiple slots (204).
7. A green tea processing method according to claim 4, characterized in that: An arc-shaped rack (405) is fixedly connected to the rotating frame (402), a contact rod (301) is fixedly connected to the forming arc plate (201), a cam (302) is rotatably connected to the side wall of the processing vessel (101), and a first gear (303) is fixedly connected to the cam (302).
8. A green tea processing method according to claim 4, characterized in that: The upper end of the processing vessel (101) is fixedly connected to a storage box (501), the bottom of the storage box (501) is provided with an opening, and a distributing roller (502) is rotatably connected inside the storage box (501).
9. A green tea processing method according to claim 8, characterized in that: A second gear (503) is fixedly connected to the distributing roller (502).
10. A green tea processing method according to claim 4, characterized in that: A drive motor (105) is fixedly connected to the processing vessel (101), and the sieve cylinder (104) is fixedly connected to the output shaft of the drive motor (105).