Tea rolling machine

Abstract

The utility model belongs to the technical field of tea leaf processing, and discloses a tea leaf rolling machine which is mainly used for solving the problems that an existing tea leaf rolling machine is relatively low in rolling efficiency and easy to form broken tea leaves. The air bags are mounted on the inner wall of the rolling barrel and the lower surface of the gland, so that tea leaves can obtain certain stress buffer when being in contact with the inner wall of the rolling barrel or the lower surface of the gland by utilizing an inflation structure of the air bags, and the tea leaves are prevented from being crushed due to excessive instantaneous stress; the air bag can also balance friction force applied to the tea leaves by different positions of the inner wall of the kneading barrel or the lower surface of the gland, when the friction force at a certain position is large, the air bag at the position sinks due to self-elasticity, other positions correspondingly bulge upwards, and then the large friction force at the position is shared and transferred. The tea leaf rolling machine improves the stress uniformity of tea leaf rolling in the rolling barrel, effectively improves the rolling quality of tea leaves, also can prevent the tea leaves from being damaged due to large stress at a certain position, and further reduces the tea breaking rate.

Description

Technical Field

[0001] This utility model belongs to the field of tea processing technology, specifically, it relates to a tea rolling machine. Background Technology

[0002] Tea rolling is a crucial step in tea processing, shaping the leaves, breaking down cell structures, promoting the release of internal substances, and regulating flavor. Traditionally, tea rolling was done by hand. However, with my country's economic development, to improve efficiency and reduce labor costs, the rolling process has gradually become mechanized and automated, leading to the development of tea rolling machines.

[0003] A tea rolling machine is a key piece of equipment used in tea processing. It consists of a rolling drum, a rolling disc, a pressure cap, a reduction gear, and a motor. During tea rolling, the rolling drum rotates horizontally on the rolling disc. Under the combined force of the pressure cap, the reaction force of the rolling disc, the resistance of the ribs, and the side pressure of the rolling drum, the tea leaves inside the rolling drum are tumbled and kneaded, causing them to curl into strips. At the same time, the leaf tissue is moderately damaged, leaf cells are damaged, and some leaf juice is squeezed out, thus achieving the purpose of rolling.

[0004] However, the biggest drawback of existing tea rolling machines is that the rolling drum and the pressure cap are usually made of metal. Therefore, during the rolling process, the tea leaves inside the rolling drum are in rigid contact with the inner wall of the drum and the pressure cap. As the tea leaves move and tumble inside the rolling drum, the friction between the drum or pressure cap and the tea leaves changes constantly at different locations on the inner wall of the drum and the pressure cap. The force on the tea leaves varies. Therefore, if the tea leaves are subjected to greater friction at a certain point on the inner wall of the drum or the pressure cap, it is easy to cause the tea leaves to break, resulting in an increased rate of broken tea. The purpose of rolling is mainly to destroy the cellular structure of the tea leaves, not the fibrous structure. Therefore, existing tea rolling machines cannot fully achieve this effect.

[0005] Compared to mechanical kneading, manual kneading eliminates the risk of excessive force on the tea leaves. When kneading tea leaves by hand, the hand's flexibility allows for gentle contact with the leaves, providing a buffer against the force. If the hand feels a strong reaction from the tea leaves, the kneading intensity can be reduced to prevent the tea leaves from breaking due to excessive force.

[0006] In conclusion, it is necessary to improve existing tea rolling machines to obtain a tea rolling machine that can simulate the gentle rolling of tea leaves by human hands. Summary of the Invention

[0007] The purpose of this invention is to provide a tea rolling machine that aims to solve the problem of high tea breakage rate in existing tea rolling machines.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A tea rolling machine includes a support frame, a rolling disc, a rolling drum, and a pressure cover. The rolling disc is horizontally fixed on the support frame. The rolling drum is mounted above the rolling disc via a rotating assembly. The pressure cover is installed inside the rolling drum to apply downward pressure to the tea leaves inside the rolling drum. Ribs are provided on the upper surface of the rolling disc. A first air bladder is circumferentially covered on the inner wall of the rolling drum. A second air bladder is covered on the lower surface of the pressure cover.

[0010] As a further preferred embodiment of this technical solution, the ribs are arc-shaped and evenly distributed radially around the axis of the kneading disc.

[0011] As a further preferred embodiment of this technical solution, the concave direction of the rib is opposite to the rotation direction of the kneading drum.

[0012] As a further preferred embodiment of this technical solution, the radial span of the rib on the kneading disc is adapted to the diameter of the kneading drum.

[0013] As a further preferred embodiment of this technical solution, the first airbag is cylindrical, and the upper and lower ends of the first airbag are sealed by clamps, which are fixedly connected to the kneading drum. Several patch plates are respectively provided on the inner and outer sides of the first airbag, and the patch plates on the inner and outer sides of the first airbag correspond one-to-one. The corresponding two patch plates clamp the first airbag and are fixedly connected to form dot-shaped depressions on the first airbag. The first airbag is fixedly connected to the kneading drum at the dot-shaped depressions.

[0014] As a further preferred embodiment of this technical solution, the second airbag is flat, and the edge of the second airbag is sealed by a clamp, which is fixedly connected to the kneading drum; several patch plates are respectively provided on both sides of the second airbag, and the patch plates on both sides of the second airbag correspond one-to-one, and the corresponding two patch plates clamp the second airbag and are fixedly connected to form dot-shaped depressions on the second airbag; the second airbag is fixedly connected to the pressure cap at the dot-shaped depressions.

[0015] As a further preferred embodiment of this technical solution, the diameter of the pressure cap is adapted to the inner diameter of the kneading drum, and the first airbag is disposed below the pressure cap.

[0016] As a further preferred embodiment of this technical solution, the rotating assembly includes a triangular connecting frame, a crank arm, and a drive motor. The triangular connecting frame is horizontally sleeved on the outer wall of the kneading drum. The three ends of the triangular connecting frame are rotatably connected to the crank arm, and the crank arm is arranged parallel to the triangular connecting frame. The crank arm includes a driving crank arm and a driven crank arm. The driving crank arm is rotatably connected to the drive motor, and the driven crank arm is rotatably connected to the support frame via a rotating shaft.

[0017] As a further preferred embodiment of this technical solution, the pressure cap is equipped with a lifting mechanism.

[0018] As a further preferred embodiment of this technical solution, the lifting mechanism includes an "L"-shaped connecting rod and a screw. One end of the "L"-shaped connecting rod is fixedly connected to the pressure cap, and the other end is threadedly connected to the screw. The screw is rotatably connected to the kneading drum.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention features airbags installed on the inner wall of the kneading drum and the lower surface of the lid. The inflatable structure of these airbags provides cushioning when the tea leaves come into contact with the drum's inner wall or the lid's lower surface. This flexible contact prevents the tea leaves from being crushed due to excessive instantaneous force. Simultaneously, during the kneading process, the airbags balance the frictional forces applied to the tea leaves at different locations on the drum's inner wall or the lid's lower surface. When the frictional force is high at a certain location, the airbag at that location sinks due to its elasticity, while airbags at other locations bulge upwards, thus distributing and transferring the higher frictional force. This improves the uniformity of force during kneading, effectively enhancing the quality of the kneaded tea leaves and preventing leaf breakage due to excessive force at one point, further reducing the breakage rate. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a top view of the kneading disc in this utility model;

[0025] Figure 4 This is a bottom view of the pressure cap in this utility model;

[0026] Among them, 1-support frame, 2-kneading plate, 3-kneading bucket, 4-pressure cover, 5-rib, 6-first airbag, 7-second airbag, 8-clamp, 9-patch plate, 10-triangular connecting frame, 11-crank arm, 12-drive motor, 13-"L" shaped connecting rod, 14-screw. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1 The tea rolling machine shown includes a support frame 1, a rolling disc 2, a rolling drum 3, and a pressure cover 4. The support frame 1 includes three columns arranged in an equilateral triangle shape. The rolling disc 2 is horizontally fixed on the upper end of the columns. The rolling drum 3 is installed above the rolling disc 2 and achieves planar rotation through the rotating component. The pressure cover 4 is horizontally embedded in the rolling drum 3 and can apply downward pressure to the tea leaves inside the rolling drum 3 by moving up and down. The upper surface of the rolling disc 2 is provided with ribs 5. When the rolling drum 3 performs planar rotation above the rolling disc 2, the tea leaves inside the rolling drum 3 can generate frictional resistance with the ribs 5 on the rolling disc 2, thereby driving the tea leaves to curl into strips and achieve rolling.

[0030] More importantly, see Figure 2 and Figure 4 A first airbag 6, cylindrical in shape, is circumferentially covered on the inner wall of the kneading drum 3. A second airbag 7, flat in shape, is covered on the lower surface of the pressure cap 4. The reason for covering the inner wall of the kneading drum 3 and the lower surface of the pressure cap 4 with airbags in this embodiment is that the inflatable structure of the airbags provides a certain degree of force buffering when the tea leaves come into contact with the inner wall of the kneading drum 3 or the lower surface of the pressure cap 4. This flexible contact prevents the tea leaves from being crushed due to excessive instantaneous force. Simultaneously, during the kneading process, the airbags can balance the frictional force applied to the tea leaves at different locations on the inner wall of the kneading drum 3 or the lower surface of the pressure cap 4. When the frictional force at a certain location is high, the airbag at that location will sink due to its own elasticity, while other locations will bulge accordingly, thereby distributing and transferring the high frictional force. This improves the uniformity of force during tea kneading inside the kneading drum 3, effectively improving the kneading quality of the tea leaves and preventing leaf damage due to excessive force at a certain point, further reducing the breakage rate of the tea leaves.

[0031] Based on the above technical solution, the problem that needs to be solved is the fixation of the airbag on the inner wall of the kneading drum 3 and the lower surface of the pressure cap 4. In this embodiment, the following solution is proposed:

[0032] I. See also Figure 2 The upper and lower ports of the first airbag 6 are sealed by clamps 8, which are fixedly connected to the kneading drum 3. Several patch plates 9 are provided on the inner and outer sides of the first airbag 6. The patch plates 9 are evenly spaced and correspond one-to-one with the patch plates 9 on the inner and outer sides of the first airbag 6. Two corresponding patch plates 9 clamp the first airbag 6 and are fixedly connected to form dot-shaped depressions on the first airbag 6. The first airbag 6 is fixedly connected to the kneading drum 3 at the dot-shaped depressions.

[0033] II. See Figure 4 The edge of the second airbag 7 is sealed by a clamp 8, which is fixedly connected to the kneading drum 3. Several patch plates 9 are provided on both sides of the second airbag 7. The patch plates 9 are evenly spaced and correspond one-to-one with the patch plates 9 on both sides of the second airbag 7. The corresponding two patch plates 9 clamp the second airbag 7 and are fixedly connected to form dot-shaped depressions on the second airbag 7. The second airbag 7 is fixedly connected to the pressure cover 4 at the dot-shaped depressions.

[0034] The clamp 8 and the kneading drum 3, the two opposing patch plates 9, and the patch plates 9 and the kneading drum 3 are all fixedly connected by bolts. The function of the clamp 8 is to seal the edge of the airbag during production, and also to linearly fix the airbag to the inner wall of the kneading drum 3 or the lower surface of the pressure cap 4, so as to ensure the stability of the connection between the airbag and the kneading drum 3 or the pressure cap 4, and to prevent the airbag from falling off due to the large frictional resistance between the tea and the inner wall of the kneading drum 3 or the lower surface of the pressure cap 4 during the tea kneading process. The function of the patch plates 9 is to clamp and fix the airbag by two opposing patch plates 9, so that the surface of the airbag has multiple point-like depressions. The point-like depressions can improve the kneading effect of the tea. At the same time, by using multiple sets of patch plates 9 to connect the airbag and the kneading drum 3 or the pressure cap 4 at multiple points, the connection strength between the airbag and the kneading drum 3 or the pressure cap 4 is further improved, so as to ensure the stability of the airbag.

[0035] In this embodiment, as Figure 1As shown, the rotating assembly includes a triangular connecting frame 10, a crank arm 11, and a drive motor 12. The triangular connecting frame 10 is horizontally sleeved on the outer wall of the kneading drum 3. The three ends of the triangular connecting frame 10 are rotatably connected to the crank arm 11, and the crank arm 11 is arranged parallel to the triangular connecting frame 10. The crank arm 11 includes a driving crank arm and a driven crank arm. The driving crank arm is rotatably connected to the drive motor 12, and the driven crank arm is rotatably connected to the support frame 1 through a rotating shaft.

[0036] The working principle of the rotating component is as follows: when the drive motor 12 is started, the drive motor 12 drives the active crank arm to rotate in a plane relative to the support frame 1. The active crank arm drives the triangular connecting frame 10 and the kneading drum 3, and together with the two driven crank arms, drives the kneading drum 3 to rotate in a plane above the kneading plate 2. At the same time, under the pressure of the pressure cover 4, the tea leaves in the kneading drum 3 generate frictional resistance with the ribs 5 on the upper surface of the kneading plate 2.

[0037] The aforementioned rotating component is a mechanical structure commonly used in existing tea kneading machines to drive the kneading drum 3. Therefore, this embodiment only provides a general description of its installation structure and does not elaborate on the length of each crank arm 11, the size of the triangular connecting frame 10, or the specific connection structure between the rotating component and the support frame 1.

[0038] On the other hand, in this embodiment, such as Figure 1 As shown, the pressure cap 4 is equipped with a lifting mechanism, which includes an "L"-shaped connecting rod 13 and a screw 14. One end of the "L"-shaped connecting rod 13 is fixedly connected to the pressure cap 4, and the other end is threadedly connected to the screw 14. The screw 14 is rotatably connected to the kneading drum 3.

[0039] Specifically, the screw 14 is vertically positioned, and its lower end is mounted on a triangular connecting bracket 10 fixedly connected to the kneading drum 3 via a bearing. When pressure adjustment is required, the pressure cap 4 is located inside the kneading drum 3. Rotating the screw 14 causes the pressure cap 4 to be limited inside the kneading drum 3, allowing the "L"-shaped connecting rod 13 threadedly connected to the screw 14 to move the pressure cap 4 up and down inside the kneading drum 3, thereby achieving pressure adjustment. When the pressure cap 4 needs to be inserted into the kneading drum 3, i.e., after the tea leaves are fed in, the pressure cap 4 needs to be pressed into the kneading drum 3. At this time, the pressure cap 4 needs to be aligned with the upper opening of the kneading drum 3, and the pressure cap 4 is manually limited. At the same time, the screw 14 is rotated, causing the "L"-shaped connecting rod 13 threadedly connected to the screw 14 to move the pressure cap 4 down until the pressure cap 4 enters the kneading drum 3.

[0040] Example 2

[0041] This embodiment is a further preferred embodiment of embodiment 1. In this embodiment, see... Figure 3 The ribs 5 are arc-shaped and evenly distributed radially around the axis of the kneading disc 2. During rotational kneading, the arc-shaped ribs 5 on the kneading disc 2 can guide the tea leaves to move along the ribs 5, making it easier for the tea leaves to curl. At the same time, the radial distribution of the ribs 5 is to adapt to the distance of the tea leaves relative to the center of rotation.

[0042] Furthermore, the concave direction of the rib 5 is opposite to the rotation direction of the kneading drum 3, which is to better guide the tea leaves along the rib 5 and improve the kneading effect; the span of the rib 5 located on the kneading disc 2 is adapted to the diameter of the kneading drum 3, which is to avoid wasting space and reduce equipment costs.

[0043] Example 3

[0044] This embodiment is a further preferred embodiment of embodiment 1. In this embodiment, the diameter of the pressure cap 4 is adapted to the inner diameter of the kneading drum 3. Correspondingly, the first air bladder 6 on the inner wall of the kneading drum 3 is arranged below the pressure cap 4 to avoid motion interference between the pressure cap 4 and the first air bladder 6, and to ensure that the pressure cap 4 can apply the same pressure to the tea leaves in the kneading drum 3 throughout the entire cross-section of the kneading drum 3, so as to avoid inadequate kneading.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tea rolling machine, comprising a support frame (1), a rolling disc (2), a rolling drum (3), and a pressure cover (4), characterized in that, The kneading disc (2) is horizontally fixed on the support frame (1). The kneading barrel (3) is installed above the kneading disc (2) via a rotating assembly. The pressure cap (4) is installed inside the kneading barrel (3) to apply downward pressure to the tea leaves inside the kneading barrel (3). Ribs (5) are provided on the upper surface of the kneading disc (2). A first airbag (6) is circumferentially covered on the inner wall of the kneading barrel (3). A second airbag (7) is covered on the lower surface of the pressure cap (4).

2. The tea rolling machine according to claim 1, characterized in that, The ribs (5) are arc-shaped and are evenly distributed radially around the axis of the kneading disc (2).

3. The tea rolling machine according to claim 2, characterized in that, The concave direction of the ridge (5) is opposite to the rotation direction of the kneading drum (3).

4. The tea rolling machine according to claim 3, characterized in that, The radial span of the rib (5) on the kneading pan (2) is adapted to the diameter of the kneading drum (3).

5. The tea rolling machine according to claim 1, characterized in that, The first airbag (6) is cylindrical, and the upper and lower ports of the first airbag (6) are sealed by clamps (8). The clamps (8) are fixedly connected to the kneading drum (3). Several patch plates (9) are provided on the inner and outer sides of the first airbag (6), and the patch plates (9) on the inner and outer sides of the first airbag (6) correspond one-to-one. The corresponding two patch plates (9) clamp the first airbag (6) and are fixedly connected to form a dot-shaped depression on the first airbag (6). The first airbag (6) is fixedly connected to the kneading drum (3) at the dot-shaped depression.

6. The tea rolling machine according to claim 1, characterized in that, The second airbag (7) is flat, and the edge of the second airbag (7) is sealed by a clamp (8), which is fixedly connected to the kneading drum (3). Several patch plates (9) are provided on both sides of the second airbag (7), and the patch plates (9) on both sides of the second airbag (7) correspond one to one. The corresponding two patch plates (9) clamp the second airbag (7) and are fixedly connected to form a dot-shaped depression on the second airbag (7). The second airbag (7) is fixedly connected to the pressure cap (4) at the dot-shaped depression.

7. The tea rolling machine according to claim 1, characterized in that, The diameter of the pressure cap (4) is adapted to the inner diameter of the kneading drum (3), and the first air bladder (6) is located below the pressure cap (4).

8. The tea rolling machine according to claim 1, characterized in that, The rotating assembly includes a triangular connecting frame (10), a crank arm (11), and a drive motor (12). The triangular connecting frame (10) is horizontally sleeved on the outer wall of the kneading drum (3). The three ends of the triangular connecting frame (10) are rotatably connected to the crank arm (11), and the crank arm (11) is arranged parallel to the triangular connecting frame (10). The crank arm (11) includes a driving crank arm and a driven crank arm. The driving crank arm is rotatably connected to the drive motor (12), and the driven crank arm is rotatably connected to the support frame (1) through a rotating shaft.

9. The tea rolling machine according to claim 1, characterized in that, The pressure cap (4) is equipped with a lifting mechanism.

10. The tea rolling machine according to claim 9, characterized in that, The lifting mechanism includes an "L"-shaped connecting rod (13) and a screw (14). One end of the "L"-shaped connecting rod (13) is fixedly connected to the pressure cap (4), and the other end is threadedly connected to the screw (14). The screw (14) is rotatably connected to the kneading drum (3).

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