Rolling equipment for tea processing

Abstract

The utility model discloses rolling equipment for tea processing, and belongs to the technical field of tea processing. The device comprises a fixing support, a round front plate is fixedly arranged on the front side of the fixing support, a round rear plate corresponding to the front plate in position is fixedly arranged on the rear side of the fixing support, a rotating cylinder is coaxially arranged on the side faces of the front plate and the rear plate in a surrounding and rotating mode, and the front plate and the rear plate block openings in the front side and the rear side of the rotating cylinder respectively. Lifting devices are arranged on the outer sides of the front plate and the rear plate, rolling wheels and first driving devices used for driving the rolling wheels to rotate are arranged at the output ends of the lifting devices, and the rolling wheels are located in the rotating cylinder. When the tea leaf rolling device is used, mutually adhered tea leaves or originally scattered tea leaves can be fully contacted with the rolling wheels in the circulating process, so that the tea leaves are uniformly and fully rolled and extruded, and the problems that the tea leaves with relatively high viscosity are easily clustered and cannot be fully rolled are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and in particular to a kneading device for tea processing. Background Technology

[0002] Tea processing refers to the process of turning raw tea leaves into finished tea products that can be consumed by people through a series of specific techniques.

[0003] Tea rolling is a crucial step in tea making. The principle involves placing pre-treated tea leaves into a rolling machine, where the machine's rotation and the pressure of the rolling discs cause the leaves to tumble and knead. This process breaks down the tea cells, allowing tea juice to seep out and adhere to the leaf surface. It also shapes the tea leaves into strips, which is beneficial for subsequent fermentation and drying processes, enhancing the aroma and flavor of the tea.

[0004] The shortcomings of the existing technical solutions are as follows: For some highly viscous tea leaves, they tend to clump together during the kneading process, making it difficult to disperse these clumps evenly within the kneading drum. During the pressure applied to the tea leaves by the kneading disc and the tumbling action of the drum, the internal and external forces of the clumps are uneven. The outer leaves, subjected to the pressure of the kneading disc and the tumbling force of the drum, receive some degree of kneading, but the inner leaves are tightly wrapped and receive almost no effective kneading force. This results in the tea leaves not being fully kneaded, incomplete cell breakage, and uneven extraction of tea juice, ultimately affecting the formation of the tea leaves and the stability of their quality, thus reducing the taste and aroma of the finished tea. Utility Model Content

[0005] This utility model provides a kneading device for tea processing, which can solve the problem in the prior art that some sticky tea leaves tend to clump together in the kneading drum, resulting in the tea leaves not being fully kneaded.

[0006] A tea processing kneading device includes a fixed support. A circular front plate is fixedly mounted on the front side of the fixed support, and a circular rear plate corresponding to the position of the front plate is fixedly mounted on the rear side of the fixed support. A rotating cylinder is coaxially arranged around the sides of the front and rear plates. The front and rear plates respectively block the front and rear openings of the rotating cylinder. A lifting device is provided on the outer side of the front and rear plates. A kneading wheel and a first drive device for driving the kneading wheel to rotate are provided at the output end of the lifting device. The kneading wheel is located inside the rotating cylinder. Adjustment ports for connecting the kneading wheel to the lifting device are provided on both the front and rear plates. A protrusion extending obliquely is arranged around the side of the kneading wheel. A second drive mechanism for driving the rotating cylinder to rotate is provided on the fixed support. The rotation direction of the rotating cylinder needs to be opposite to the rotation direction of the kneading wheel.

[0007] As a further embodiment of this utility model: the inner side of the rotating cylinder is provided with a plurality of sets of axially extending protrusions.

[0008] As a further embodiment of this utility model: a rotary support assembly for providing auxiliary support to the bottom of the rotating cylinder is fixedly installed on the fixed bracket.

[0009] As a further embodiment of this utility model: the rotating support assembly is provided in two sets, and is symmetrically arranged on both sides of the rotating cylinder. Each set of the rotating support assembly includes a support shaft rotatably mounted on a fixed bracket. A support wheel is coaxially fixedly connected to the support shaft. A positioning groove that cooperates with the support wheel is arranged around the side of the rotating cylinder.

[0010] As a further embodiment of this utility model: the support wheel is a gear, and the positioning groove is a toothed groove.

[0011] As a further embodiment of this utility model: the first driving device includes a transmission shaft rotatably disposed at the output end of the lifting device, the kneading wheel is coaxially and fixedly connected to the transmission shaft, and a first motor for driving the transmission shaft to rotate is fixedly disposed at the output end of the lifting device.

[0012] As a further embodiment of this utility model: the second drive mechanism includes a second motor disposed below the fixed bracket, a drive wheel fixedly connected to the output end of the second motor, a driven wheel coaxially fixedly disposed on the side of a set of supporting rotating shafts, and a transmission belt disposed on the side of the drive wheel and the driven wheel.

[0013] As a further embodiment of this utility model: the upper end of the front plate is provided with a feeding port, the lower end of the front plate is provided with a discharging port, and a baffle is provided on the discharging port.

[0014] As a further embodiment of this utility model, the front plate is provided with a locking mechanism for positioning the baffle.

[0015] As a further embodiment of this utility model: the locking mechanism includes a fixed sleeve fixedly mounted on the front plate, a movable sleeve corresponding to the position of the fixed sleeve fixedly mounted on the baffle, and a pin slidingly engaged inside the fixed sleeve.

[0016] The beneficial effects of this utility model are:

[0017] 1. In use, the rotating drum moves the bottom layer of tea leaves, which then fall to the top layer due to gravity after reaching a certain height, forming a cycle. The kneading wheel rotates in the opposite direction to the rotating drum, using its larger volume to compress the top layer of tea leaves. The raised protrusions on the sides further push the tea leaves in the opposite direction, achieving compression and separation. This synergistic effect breaks down the tea leaf cell structure, allowing tea juice to seep out. Moreover, the raised protrusions on the inner side of the rotating drum improve the side adhesion and kneading effect. In this way, whether the tea leaves are stuck together or originally scattered, they can fully contact the kneading wheel during the cycle, achieving uniform and thorough kneading and compression, effectively solving the problem that sticky tea leaves tend to clump together and cannot be fully kneaded.

[0018] 2. In use, the lifting device of this invention allows adjustment of the distance between the kneading wheel and the bottom of the rotating drum, thereby adjusting the squeezing and kneading force on the tea leaves. In the initial kneading stage, some tea leaf cell walls are intact; applying excessive force directly can easily damage the tea leaf structure, leading to breakage and affecting quality. At this time, the kneading force is reduced. After 5-10 minutes, as the tea leaf cell walls are gradually broken down, the kneading force is gradually increased. This method of adjusting the kneading force according to the actual condition of the tea leaves ensures that the tea leaves are not excessively damaged during kneading while also ensuring a good kneading effect, meeting the kneading needs of different teas. Attached Figure Description

[0019] Figure 1 This utility model provides a schematic diagram of the overall structure of a tea processing kneading device;

[0020] Figure 2 A schematic diagram of the overall longitudinal section structure of a tea processing kneading device provided by this utility model;

[0021] Figure 3 This utility model provides a schematic diagram of the rotating cylinder structure of a tea processing kneading device.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Fixed bracket; 2. Front plate; 201. Feeding port; 202. Discharge port; 203. Baffle; 3. Rear plate; 4. Lifting device; 5. Adjustment port; 6. First drive device; 601. First motor; 602. Drive shaft; 7. Twisting wheel; 8. Rotating drum; 9. Second drive mechanism; 901. Second motor; 902. Drive wheel; 903. Drive belt; 10. Locking mechanism; 1001. Fixed sleeve; 1002. Movable sleeve; 1003. Pin; 11. Rotary support assembly; 1101. Support shaft; 1102. Support wheel; 12. Positioning rail groove. Detailed Implementation

[0024] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0025] like Figures 1 to 3 As shown in the figure, an embodiment of the present invention provides a tea processing kneading device, including a fixed support 1, a circular front plate 2 fixedly disposed on the front side of the fixed support 1, and a circular rear plate 3 fixedly disposed on the rear side of the fixed support 1, corresponding to the position of the front plate 2. A rotating cylinder 8 is coaxially arranged around the sides of the front plate 2 and the rear plate 3, as shown in the figure. Figure 2 As shown, the front plate 2 and the rear plate 3 block the front and rear openings of the rotating cylinder 8 respectively, thereby forming a relatively closed working space inside the rotating cylinder 8.

[0026] A lifting device 4 is provided on the outer side of the front plate 2 and the rear plate 3. The output end of the lifting device 4 is connected to the kneading wheel 7 and a first drive device 6 for driving the kneading wheel 7 to rotate. The kneading wheel 7 is located inside the rotating cylinder 8. To facilitate the connection between the lifting device 4 and the kneading wheel 7, adjustment ports 5 are provided on both the front plate 2 and the rear plate 3, and the kneading wheel 7 is located between these two adjustment ports 5. The kneading wheel 7 has a certain volume, which facilitates the crushing operation of the tea leaves located at the bottom of the rotating cylinder 8. Moreover, the side of the kneading wheel 7 is provided with obliquely extending protrusions, which can improve the kneading effect of the tea leaves. At the same time, a second drive mechanism 9 for driving the rotating cylinder 8 to rotate is also provided on the fixed bracket 1. The rotation direction of the rotating cylinder 8 needs to be opposite to the rotation direction of the kneading wheel 7.

[0027] When using this device, once the rotating drum 8 is started, it moves the tea leaves at the bottom to one side. As the tea leaves move to a certain height on the side wall of the rotating drum 8, they fall onto the original upper layer of tea leaves at the bottom of the rotating drum 8 under the influence of gravity. At this point, the kneading roller 7 squeezes the upper layer of tea leaves at the bottom of the rotating drum 8, and simultaneously uses the raised structure on its surface to push the tea leaves in the opposite direction, thus achieving the effect of squeezing and separating. Afterwards, these tea leaves fall to the bottom of the rotating drum 8 and continue to be transported by the side wall of the rotating drum 8 until they reach the bottom, where they are covered by tea leaves falling from one side of the rotating drum 8. Then, the tea leaves covering the top are pushed to one side by the kneading roller 7. The tea leaves at the bottom are transported to a certain height by the rotating drum 8 again, and then fall to the bottom of the rotating drum 8 again due to gravity, becoming the upper layer of tea leaves. This cycle repeats continuously, ensuring that both sticky tea leaves and originally scattered tea leaves receive sufficient and even kneading and squeezing, greatly improving the efficiency and effect of kneading.

[0028] In one specific embodiment, the first driving device 6 includes a drive shaft 602 rotatably mounted at the output end of the lifting device 4. The drive shaft 602 passes through the adjustment port 5. The kneading wheel 7 is coaxially and fixedly connected to the drive shaft 602. A first motor 601 for driving the drive shaft 602 to rotate is fixedly mounted at the output end of the lifting device 4. When the first motor 601 starts, it drives the drive shaft 602 to rotate, which in turn drives the kneading wheel 7 to rotate, thereby realizing the plucking operation of the tea leaves. In addition, in order to reduce the gap size between the kneading wheel 7 and the front plate 2 and the rear plate 3, and to prevent the tea leaves from entering the adjustment port 5 through the gap, rubber rings are also provided on both sides of the kneading wheel 7. In addition, the lifting device 4 can also adjust the distance between the kneading wheel 7 and the bottom of the rotating cylinder 8, so that the squeezing and kneading force on the tea leaves can be adjusted according to actual needs. For example, at the beginning of the squeezing, since some tea leaves still have intact cell walls, if a large force is applied directly, it is easy to directly damage the structure of the tea leaves. Therefore, it is necessary to reduce the kneading force first, and then gradually increase the kneading force after 5-10 minutes.

[0029] The inner side of the rotating drum 8 is provided with multiple sets of axially extending protrusions. These protrusions not only improve the adhesion of the rotating drum 8 to the side but also improve the kneading effect. In addition, in order to ensure the stability of the rotating drum 8 during operation, a rotating support assembly 11 for auxiliary support of the bottom of the rotating drum 8 is also fixedly provided on the fixed bracket 1.

[0030] In one specific embodiment, two sets of rotating support assemblies 11 are provided, symmetrically arranged on both sides of the rotating cylinder 8. Each set of rotating support assemblies 11 includes a support shaft 1101 rotatably mounted on a fixed bracket 1. A support wheel 1102 is coaxially fixedly connected to the support shaft 1101, and a positioning groove 12 that mates with the support wheel 1102 is provided around the side of the rotating cylinder 8. The support wheel 1102 can support the bottom of the rotating cylinder 8, and the support wheel 1102, together with the front plate 2 and the rear plate 3, ensures the stability of the rotating cylinder 8 during operation.

[0031] In one specific embodiment, the second drive mechanism 9 includes a second motor 901 disposed below the fixed bracket 1. The output end of the second motor 901 is fixedly connected to a drive wheel 902. A driven wheel is coaxially fixedly disposed on the side of a set of supporting shafts 1101. A transmission belt 903 is fitted onto the sides of the drive wheel 902 and the driven wheel. When the second motor 901 starts, it drives the drive wheel 902 to rotate. The drive wheel 902 then drives the driven wheel to rotate via the transmission belt 903, thereby driving the supporting shafts 1101 and the supporting wheel 1102 to rotate, ultimately achieving the purpose of rotating the rotating cylinder 8. To improve the transmission effect, the supporting wheel 1102 is preferably a gear, and the positioning groove 12 is preferably a toothed groove.

[0032] In one specific embodiment, the upper end of the front plate 2 has a feeding port 201 for feeding tea leaves to be kneaded into the equipment; the lower end of the front plate 2 has a discharge port 202, and a baffle 203 is fitted onto the discharge port 202. To facilitate the positioning of the baffle 203, a locking mechanism 10 is also provided on the front plate 2. Specifically, the locking mechanism 10 includes a fixed sleeve 1001 fixedly mounted on the front plate 2, and a movable sleeve 1002 fixedly mounted on the baffle 203 corresponding to the position of the fixed sleeve 1001. A pin 1003 is slidably fitted inside the fixed sleeve 1001. During the kneading process, the pin 1003 is inserted into the fixed sleeve 1001 and the movable sleeve 1002 to position the baffle 203 and prevent the tea leaves from leaking out of the discharge port 202 during the kneading process. When discharging, simply pull the pin 1003 out of the fixed sleeve 1001 and the movable sleeve 1002, and the baffle 203 can be opened, thus facilitating the output of the kneaded tea leaves.

[0033] Working principle: After the equipment is started, the second drive mechanism 9 begins to work, driving the rotating drum 8 to rotate. At the same time, the first drive device 6 drives the kneading wheel 7 to rotate in the opposite direction to the rotating drum 8.

[0034] The operator feeds the tea leaves to be kneaded into the rotating drum 8 through the feeding port 201 at the top of the front plate 2. Since the rotating drum 8 is rotating, it moves the tea leaves at the bottom to one side. The tea leaves continue to move within the rotating drum 8, and when they reach a certain height on the side wall, they fall off the side wall under their own weight onto the original upper layer of tea leaves at the bottom of the rotating drum 8. At this point, the kneading wheel 7, with its larger size, applies pressure to the upper layer of tea leaves at the bottom of the rotating drum 8, squeezing them. Simultaneously, the protrusions surrounding the side of the kneading wheel 7 push the tea leaves in the opposite direction during rotation. Through this combined action of squeezing and pushing, the tea leaves achieve the effect of squeezing and separating, causing a certain degree of damage to the cell structure of the tea leaves, allowing tea juice to seep out, thus initially achieving the purpose of kneading. The tea leaves processed by the kneading wheel 7 fall to the bottom of the rotating drum 8 and continue to move under the influence of the rotating drum 8. When they reach the very bottom of the rotating drum 8, they are covered by tea leaves that have fallen from one side of the rotating drum 8 due to gravity, becoming the bottom layer of tea leaves. Next, the tea leaves are transported to a certain height as the rotating drum 8 continues to rotate. Once they reach a certain height on the side wall of the rotating drum 8, they fall to the bottom of the drum 8 under gravity, becoming part of the upper layer of tea leaves again. This cycle repeats continuously, with the tea leaves undergoing a process of being kneaded from the bottom to the top and then falling back down within the rotating drum 8. During this process, whether the tea leaves are stuck together or were originally loose, they all come into full contact with the kneading wheels 7, receiving pressure and movement from the wheels, resulting in thorough and even kneading and compression.

[0035] Furthermore, during the kneading process, the distance between the kneading wheel 7 and the bottom of the rotating cylinder 8 can be adjusted by regulating the lifting device 4, thereby adjusting the pressure and kneading force on the tea leaves. At the beginning of kneading, because the cell walls of some tea leaves are still relatively intact, applying too much force directly can easily damage the overall structure of the tea leaves, causing them to break and affecting their quality. Therefore, the kneading force needs to be reduced at this time. After 5-10 minutes, as the cell walls of the tea leaves are gradually broken down, the kneading force can be gradually increased to achieve a better kneading effect.

[0036] Once the tea leaves are kneaded, the operator only needs to open the locking mechanism 10 corresponding to the baffle 203 on the front plate 2 discharge port 202, pull out the pin 1003, and open the baffle 203. The kneaded tea leaves can then be output from the discharge port 202, completing the entire kneading process.

[0037] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A tea processing kneading device, comprising a fixed support (1), characterized in that, A circular front plate (2) is fixedly installed on the front side of the fixed bracket (1), and a circular rear plate (3) corresponding to the position of the front plate (2) is fixedly installed on the rear side of the fixed bracket (1). A rotating cylinder (8) is coaxially arranged around the sides of the front plate (2) and the rear plate (3). The front plate (2) and the rear plate (3) respectively block the front and rear openings of the rotating cylinder (8). A lifting device (4) is provided on the outer side of the front plate (2) and the rear plate (3). A kneading wheel (7) and a device for conveying kneading wheels are provided at the output end of the lifting device (4). The first drive device (6) for rotating the kneading wheel (7) is located inside the rotating cylinder (8). The front plate (2) and the rear plate (3) are provided with adjustment ports (5) to facilitate the connection of the lifting device (4) to the kneading wheel (7). The side of the kneading wheel (7) is surrounded by a protrusion that extends obliquely. The fixed bracket (1) is provided with a second drive mechanism (9) for driving the rotating cylinder (8) to rotate. The rotation direction of the rotating cylinder (8) needs to be opposite to the rotation direction of the kneading wheel (7).

2. The tea processing kneading equipment as described in claim 1, characterized in that, The inner side of the rotating cylinder (8) is provided with a plurality of axially extending protrusions.

3. The tea processing kneading equipment as described in claim 1, characterized in that, A rotary support assembly (11) for providing auxiliary support to the bottom of the rotary cylinder (8) is fixedly installed on the fixed bracket (1).

4. The tea processing kneading equipment as described in claim 3, characterized in that, Two sets of the rotating support components (11) are provided and are symmetrically arranged on both sides of the rotating cylinder (8). Each set of the rotating support components (11) includes a support shaft (1101) rotatably arranged on the fixed bracket (1). A support wheel (1102) is coaxially fixedly connected to the support shaft (1101). The side of the rotating cylinder (8) is surrounded by a positioning groove (12) that cooperates with the support wheel (1102).

5. The tea processing kneading equipment as described in claim 4, characterized in that, The support wheel (1102) is a gear, and the positioning groove (12) is a tooth groove.

6. The tea processing kneading equipment as described in claim 1, characterized in that, The first driving device (6) includes a transmission shaft (602) rotatably disposed at the output end of the lifting device (4), the kneading wheel (7) is coaxially fixedly connected to the transmission shaft (602), and the output end of the lifting device (4) is fixedly provided with a first motor (601) for driving the transmission shaft (602) to rotate.

7. The tea processing kneading equipment as described in claim 4, characterized in that, The second drive mechanism (9) includes a second motor (901) disposed below the fixed bracket (1). The output end of the second motor (901) is fixedly connected to a drive wheel (902). A driven wheel is coaxially fixedly disposed on the side of a set of support shafts (1101). A transmission belt (903) is provided on the side of the drive wheel (902) and the driven wheel.

8. The tea processing kneading equipment as described in claim 1, characterized in that, The front plate (2) has a feeding port (201) at the upper end and a discharge port (202) at the lower end. A baffle (203) is provided on the discharge port (202).

9. The tea processing kneading equipment as described in claim 8, characterized in that, The front plate (2) is provided with a locking mechanism (10) for positioning the baffle (203).

10. A tea processing kneading device as described in claim 9, characterized in that, The locking mechanism (10) includes a fixed sleeve (1001) fixedly mounted on the front plate (2), and a movable sleeve (1002) corresponding to the position of the fixed sleeve (1001) fixedly mounted on the baffle (203). A pin (1003) is slidably fitted inside the fixed sleeve (1001).

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