Tea leaf winnower and tea leaf production method

Abstract

The tea leaf winnower and the tea leaf production method can realize the rotation of the drum by the first driving assembly, thereby realizing the turning of the tea leaves and separating the stones in the tea leaves from the drum, and realizing the preliminary screening of the tea leaves; while the tea leaves are turned inside the drum, the tea leaves are transported to the screening frame by the blocking plate, the swinging mechanism drives the screening frame to swing up and down reciprocatingly, thereby performing the secondary screening of the stones and the granular impurities in the tea leaves, the stones and the impurities fall into the docking table, and then the second air outlet hole of the air distribution member is used to blow out the falling stones and impurities from the drum; the tea leaves on the screening frame move to the scattering member while swinging, the second scattering structure moves along the axial direction of the scattering pipe reciprocatingly, thereby separating the tea leaves in groups, and after the tea leaves fall from the screening frame, the airflow blown out by the first air outlet hole of the air distribution member is used to blow the tea leaves into the winnower box, thereby improving the winnowing effect of the tea leaves.

Description

Technical Field

[0001] This disclosure relates to the field of tea production, and in particular to a tea air separator and a tea production method. Background Technology

[0002] After picking, the tea leaves contain a mixture of single buds, one bud and one leaf, one bud and two leaves, one bud and three or four leaves, single leaves, and residual stones. The tea leaves need to be graded using an air separator. Typically, the mixed tea leaves are conveyed upwards to the top of the air separator via an elevator. Then, a fan blows the tea leaves falling from the elevator, causing them to fall at different points based on their weight, thus achieving the sorting of the tea leaves.

[0003] In this case, the stones in the tea leaves are still mixed inside the tea leaves after winnowing, and manual sieving is required later.

[0004] To solve the problem of separating stones from tea leaves, a drum screener is usually used for stone screening, and then the tea leaves are fed into an air separator. However, placing the air separator and the drum screener in sequence makes the tea production line too long and occupies a certain amount of production space.

[0005] Therefore, how to design a tea air separator that integrates stone screening and tea air separation has become a technical problem that urgently needs to be solved by people in this field. Summary of the Invention

[0006] This disclosure provides a tea air separator and a tea production method to solve the problem of separating stones from tea leaves.

[0007] A tea leaf air separator is provided, the air separator being used to screen materials to be screened, the air separator comprising:

[0008] An air separator, wherein a plurality of screening positions are arranged sequentially along a first direction inside the air separator;

[0009] A first screening component is located at one end of the air separator along the first direction. The first screening component is connected to the air separator. The first screening component and each screening position have different distances in the first direction.

[0010] A first driving component is rotatably connected to the first screening component to remove impurities from the material to be screened.

[0011] A second filtering component, disposed within the first filtering component, is used to filter the items to be filtered by the first filtering component.

[0012] The second screening component also includes a gas distribution element.

[0013] An air distribution component is used to drive the material to be screened to move along a first direction. Under the blowing of the air distribution component, the material to be screened forms multiple parabolas moving along the first direction according to the different densities of the material to be screened. The parabolas have different landing points in the first direction, and the landing points of the parabolas are set to correspond to the screening positions.

[0014] In one possible implementation, the second filtering component includes,

[0015] The material is divided into a dispersing component and a screening frame. The dispersing component is located on one side of the screening frame. The screening frame is used to screen impurities in the material to be screened. The screening frame has a screening surface on the side near the dispersing component. The material to be screened is carried on the screening surface. The dispersing component moves relative to the screening surface to disperse the material to be screened.

[0016] In one possible implementation, the disintegrating component includes,

[0017] A first dispersing structure and a first driving member, wherein the first driving member is connected to the first dispersing structure to drive the first dispersing structure to rotate circumferentially relative to the screen surface in order to disperse the material to be screened;

[0018] A second dispersing structure and a second driving member are connected to the second dispersing structure to drive the second dispersing structure to rotate circumferentially and / or move laterally relative to the screen surface to disperse the material to be screened.

[0019] In one possible implementation, the first disintegration structure includes,

[0020] A dispersing tube and a first dispersing support rod, the first dispersing support rod being connected to the dispersing tube and extending radially along the dispersing tube; wherein,

[0021] The first driving member is connected to the dispersing tube to drive the dispersing tube to rotate;

[0022] The second disintegration structure includes,

[0023] The device includes a push rod and a second dispersing support rod. A driving cavity is horizontally arranged inside the dispersing tube. The push rod is located inside the driving cavity. A sliding groove is horizontally arranged on the dispersing tube. The sliding groove communicates with the driving cavity. The second dispersing support rod passes through the sliding groove and is connected to the push rod.

[0024] The second driving element includes,

[0025] A first driving structure and a second driving structure are located at the two ends of the push rod in the lateral direction. The first driving structure and the second driving structure are used to drive the push rod to move laterally in the driving cavity.

[0026] In one possible implementation, the second filtering component further includes,

[0027] A connecting platform is located on one side of the screening frame, and the screening frame is located between the connecting platform and the disintegrating component. The connecting platform is used to carry impurities screened by the screening frame, and the connecting platform forms a first angle with the horizontal plane.

[0028] In one possible embodiment, the air distribution component includes,

[0029] Gas source;

[0030] A gas distribution box is provided with a gas distribution cavity inside. The gas distribution box has an air inlet and a first air outlet at both ends along the first direction. The air inlet and the first air outlet are connected to the gas distribution cavity. A first gas flow channel is formed in the gas distribution cavity from the air inlet to the first air outlet. The gas source generates an airflow, which is blown towards the air separator through the first gas flow channel.

[0031] In one possible embodiment, the gas distribution box further includes,

[0032] The second air outlet is connected to the air distribution cavity. A second gas flow channel is formed in the air distribution cavity from the air inlet to the second air outlet. The airflow is blown toward the docking platform through the second gas flow channel.

[0033] A flow divider is located between the first gas flow channel and the second gas flow channel to divide the airflow into a first airflow and a second airflow. The first airflow is directed toward the air separator, and the second airflow is directed toward the connecting platform.

[0034] In one possible implementation, the first filtering component includes,

[0035] A drum with sieve holes, which, as the drum rotates, are used to screen impurities in the material to be screened.

[0036] A deflector plate is disposed on the inner surface of the drum and extends inward to form a deflecting area. The material to be screened is placed in the deflecting area, and under the rotation of the drum, the material to be screened placed in the deflecting area rotates synchronously with the drum.

[0037] In one possible implementation, the first filtering component further includes,

[0038] A baffle plate is disposed between the screen surface and the deflector plate, and the baffle plate abuts against the deflector plate. Under the rotation of the drum, the material to be screened located in the deflector area rotates synchronously to the top of the screen surface.

[0039] The dropping area is located on one side of the baffle plate and directly above the screen surface. Under the rotation of the roller, the material to be screened located in the agitation area falls onto the screen surface through the dropping area.

[0040] According to a second aspect of this disclosure, a method for producing tea is provided, comprising the following steps;

[0041] Fresh leaves are placed on a withering machine to reduce the moisture content of the tea leaves.

[0042] After the tea leaves have been spread out, they are placed into a continuous fixing and shaping machine for shaping.

[0043] The shaped tea leaves are placed into an air separator for air separation.

[0044] After winnowing, the tea leaves are placed in a rehumidifier for initial rehumidification.

[0045] The tea leaves that have just been moistened are placed into a drying machine and dried at high temperature.

[0046] A re-moistening process is used to re-moisten the tea leaves that have been dried at high temperature.

[0047] The tea leaves that have undergone a second moisture re-drying process are placed in a drying machine for a second drying process.

[0048] Finished product packaging.

[0049] Compared with the prior art, the tea air separator disclosed herein has the following beneficial effects: the tea leaves are conveyed into the first screening component, and the first driving component drives the first screening component to rotate, thereby initially separating the stones in the tea leaves from the first screening component, thus achieving the initial screening of the tea leaves;

[0050] As the first screening component rotates, the tea leaves are conveyed to the sieve rack of the second screening component for secondary screening. At the same time, the clumps of tea leaves on the sieve rack are broken up and separated by the dispersing and separating components. The air distribution component guides the tea leaves falling from the sieve rack into the air separator. Depending on the weight of the tea leaves, they fall along different parabolic paths to different screening positions, thus achieving tea leaf screening. In addition, since the second screening component is located inside the first screening component, the footprint of the screening components is reduced, improving space utilization.

[0051] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0052] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0053] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0054] Figure 1 A schematic diagram of the overall structure of a tea air separator according to an embodiment of the present disclosure is shown;

[0055] Figure 2 A first-angle cross-sectional view of a tea air separator according to an embodiment of the present disclosure is shown;

[0056] Figure 3 A second-angle sectional view of a tea air separator according to an embodiment of the present disclosure is shown;

[0057] Figure 4 This diagram shows a first unfolded schematic diagram of a tea air separator according to an embodiment of the present disclosure;

[0058] Figure 5 A schematic diagram of a first drive assembly of a tea air separator according to an embodiment of the present disclosure is shown;

[0059] Figure 6 A cross-sectional view of a tea air separator drum according to an embodiment of the present disclosure is shown;

[0060] Figure 7 This diagram illustrates the structure of a second screening component of a tea air separator according to an embodiment of the present disclosure.

[0061] Figure 8 A cross-sectional view of a second screening component of a tea air separator according to an embodiment of the present disclosure is shown;

[0062] Figure 9 A top view of a baffle plate of a tea air separator according to an embodiment of the present disclosure is shown;

[0063] Figure 10 This diagram shows a first state of the sieve frame of a tea air separator according to an embodiment of the present disclosure;

[0064] Figure 11 This diagram illustrates a second state of the sieve frame of a tea air separator according to an embodiment of the present disclosure;

[0065] Figure 12A cross-sectional view of the air distribution component of a tea air separator according to an embodiment of the present disclosure is shown;

[0066] Figure 13 This diagram shows a second unfolded schematic of a tea air separator according to an embodiment of the present disclosure;

[0067] Figure 14 This shows a first-angle sectional view of the tea leaf air separator's dispersing component according to an embodiment of the present disclosure;

[0068] Figure 15 This illustration shows a second-angle sectional view of the tea leaf air separator's dispersing component according to an embodiment of the present disclosure;

[0069] Figure 16 A partial structural schematic diagram of a tea air separator according to an embodiment of the present disclosure is shown;

[0070] Figure 17 A schematic diagram of the installation of the second dispersing support rod of a tea air separator according to an embodiment of the present disclosure is shown;

[0071] Figure 18 A flowchart of a tea production method according to an embodiment of the present disclosure is shown.

[0072] Explanation of the labels in the diagram:

[0073] X, first direction; OY, second direction; OY', third direction;

[0074] 1. Air separator; 10. Screening position; 101. First screening position; 102. Second screening position; 103. Third screening position; 104. Feed inlet; 105. Air outlet;

[0075] 11. Interception component; 111. Mounting port; 112. Interception net; 1121. Locking groove; 113. Locking rod; 114. Locking head; 115. Spring; 12. Supporting platform; 121. Support base;

[0076] 2. First screening component; 201. Feeding area; 202. Residual material return area;

[0077] 21. Drum; 211. Screen hole; 212. Baffle plate; 213. Retaining ring; 22. Baffle plate; 221. Drop area;

[0078] 3. First drive assembly; 31. Drive rod; 32. First motor; 33. Transmission mechanism; 331. Guide shoulder; 332. Transmission gear ring; 34. Drive gear; 35. Limiting roller;

[0079] 4. Second filtering component;

[0080] 41. Air distribution unit; 411. Air distribution box; 4111. Air inlet; 4112. First air outlet; 4113. Second air outlet; 4114. Flow divider;

[0081] 42. Disassembly component; 421. First disassembly structure; 4211. Disassembly tube; 4212. First disassembly support rod; 422. First driving component; 4221. Second motor; 4222. First gear; 4223. Second gear; 423. Second disassembly structure; 4231. Push rod; 42311. Threaded hole; 4232. Second disassembly support rod; 42321. Sealing plate; 4233. Sliding groove; 424. Second driving component; 4241. First driving structure; 4242. Second driving structure;

[0082] 43. Screen frame; 431. Screen surface; 432. Guide block;

[0083] 44. Connecting platform; 441. Support rod; 442. Rotating shaft; 443. Support plate; 4431. Guide groove; 444. Connecting guide plate;

[0084] 45. Swinging mechanism; 451. Turntable; 452. Eccentric rod; 453. Swing rod; 454. Pin;

[0085] 5. Blowing pipe;

[0086] 61. Support leg; 62. Support frame.

[0087] 100. Elevator. Detailed Implementation

[0088] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0089] like Figure 1 and Figure 2 As shown, it includes an air separator 1 for sorting tea leaves of different qualities, such as... Figure 4 As shown, the air classifier 1 has a feed inlet 104 for tea leaves to enter on one side. The air classifier 1 has several screening positions 10 arranged along the first direction X. The screening positions 10 include a first screening position 101, a second screening position 102 and a third screening position 103. It is worth noting that the first direction X is consistent with the axis of the air classifier 1.

[0090] The first screening position 101 is used to remove heavier tea leaves, the second screening position 102 is used to remove lighter tea leaves, and the third screening position 103 is used to remove the lightest tea leaves. It is worth noting here that "heavier", "lighter", and "lightest" are comparisons among the three, and represent the range of tea leaf weight values.

[0091] In order to allow tea leaves to fall from the feed inlet 104 into the first screening position 101, the second screening position 102 and the third screening position 103 respectively, in this embodiment, the tea leaves fall from the feed inlet 104 from top to bottom, and also includes blowing the tea leaves into the air separation airflow in the inner cavity of the air separation box 1. It is worth noting that the air separation airflow flows along the axial direction of the air separation box 1.

[0092] like Figure 1 and Figure 2 As shown, the air classifier 1 is provided with an air outlet 105 on the same axis as the feed inlet 104. When the air classifier airflow is blown into the inner cavity of the air classifier 1 from the feed inlet 104, the tea leaves fall into the corresponding screening positions 10 respectively. The air classifier airflow flows out of the air classifier 1 from the air outlet 105, which solves the problem of the air classifier airflow being stuck in the inner cavity of the air classifier 1.

[0093] The principle of air separation for tea leaves is mainly based on the different falling speeds of the tea leaves. During the air separation process, the trajectory of the falling tea leaves is parabolic. The size of the opening of the screening position 10 will affect the air separation effect. Other factors affecting the air separation effect include the size of the air separation airflow. Under normal circumstances, the speed of the air separation airflow is a constant value, and the sizes of the several screening positions 10 are also the same. During the air separation process, the screening position 10 can receive the tea leaves that should fall into the two adjacent screening positions 10. If the falling position of the tea leaves deviates, the air separation effect will be poor.

[0094] In order to enable manual adjustment of the air separation effect, in this embodiment, such as Figure 2 and Figure 3 As shown, the air separator 1 also includes an interception component 11 for intercepting tea leaves. There are two sets of interception components 11, one of which is installed between the first screening position 101 and the second screening position 102, and the other is installed between the second screening position 102 and the third screening position 103. The interception component 11 can be adjusted along the height direction of the air separator 1.

[0095] It is worth noting that there are not only two sets of interception components 11. When the number of screening positions 10 changes, the number of interception components 11 should also change accordingly, so that the position of the tea leaves can be adjusted according to the interception components 11, so that the tea leaves fall into the corresponding screening positions 10.

[0096] Specifically, in this embodiment, such as Figure 3As shown, the interception assembly 11 includes an installation port 111 opened on the bottom wall of the air separator 1. An interception net 112 that can be raised and lowered is installed in the installation port 111. The side wall of the interception net 112 is slidably connected to the side wall of the installation port 111. It also includes a locking rod 113 extending through the side wall of the air separator 1 into the inner cavity of the air separator 1. A locking head 114 is installed at the end of the locking rod 113. The side wall of the interception net 112 is provided with a locking groove 1121 for the locking head 114 to be inserted. The locking head 114 can switch between inside and outside the locking groove 1121.

[0097] It also includes a spring 115 sleeved on the locking rod 113, wherein one end of the spring 115 is fixedly connected to the locking rod 113, and the other end of the spring 115 is fixedly connected to the outer wall of the air separator 1. When it is necessary to adjust the height of the interception net 112, the locking head 114 can be pulled outward through the locking rod 113, the locking head 114 moves out of the locking groove 1121, the spring 115 stretches, releasing the locking of the interception net 112. After the position of the interception net 112 is adjusted, the restriction on the locking rod 113 is released, the spring 115 drives the locking head 114 to reset and insert into the locking groove 1121, preventing the interception net 112 from falling downward under its own weight, thus fixing the interception net 112.

[0098] Because tea leaves may contain impurities such as pebbles, in order to separate these particulate impurities from the tea leaves and prevent them from entering the air separator 1, in this embodiment, as follows: Figure 1 and Figure 2 As shown, a first screening component 2 for screening stones in tea leaves and an elevator 100 for conveying tea leaves to the first screening component 2 are provided on the front side of the feed inlet 104 of the air separator 1.

[0099] Specifically, such as Figure 5 As shown, the first screening component 2 includes a drum 21 for preliminary screening of tea leaves and a first drive component 3 for driving the drum 21 to rotate. The drum 21 has sieve holes 211 distributed on it for granular impurities such as stones to fall through. The elevator 100 transports the tea leaves into the drum 21. As the first drive component 3 drives the drum 21 to rotate, the friction between the tea leaves and the inner wall of the drum 21 causes the tea leaves to gradually rise, which in turn causes the tea leaves to tumble inside the drum 21. At this time, stones and granular impurities with a diameter smaller than the diameter of the sieve holes 211 will fall through the sieve holes 211 and fall down, achieving the preliminary separation of tea leaves and stones.

[0100] During the process of the elevator 100 conveying tea leaves to the drum 21, a large amount of tea leaves will accumulate at the drum 21 directly below the tail end of the elevator 100, which will affect the screening effect of stones or impurities in the tea leaves. Therefore, in this embodiment, as Figure 5 and Figure 6As shown, there is an angle θ between the axis of the roller 21 and the horizontal plane. The side of the roller 21 near the feed inlet 104 of the air classifier box 1 is lower than the side of the roller 21 away from the air classifier box 1. The tea leaves dropped by the elevator 100 are located on the side of the roller 21 away from the air classifier box 1.

[0101] Tea leaves from the elevator 100 fall into the drum 21. As the drum 21 rotates, the tea leaves move towards the side of the drum 21 closer to the air separator 1, thus spreading the tea leaves out and preventing them from piling up.

[0102] Although tilting the roller 21 at an angle θ allows the tea leaves to gradually spread away from the elevator 100, the tea leaves themselves may become entangled, and impurities such as stones may be trapped inside, thus affecting the separation of stones and tea leaves. Therefore, in this embodiment, as... Figure 2 As shown, a blowing pipe 5 is provided below the drum 21. The blowing pipe 5 has air holes for supplying airflow to the drum 21. It is worth noting that the air holes are set vertically upward. When the drum 21 rotates, a large amount of airflow is input into the blowing pipe 5. At this time, the airflow passes through the air holes and the sieve holes 211 of the drum 21 and flows upward, thereby blowing the tea leaves inside the drum 21 upward. The blown tea leaves are suspended and begin to disperse, separating the stones wrapped in the tea leaves and improving the separation effect of tea leaves and stones.

[0103] To achieve the installation of roller 21, in this embodiment, as follows: Figure 2 and Figure 4 As shown, a support platform 12 is fixedly provided on the side wall of the feed inlet 104 of the air classifier 1. The roller 21 is installed on the support platform 12, and the blowing pipe 5 is fixedly installed on the top wall of the support platform 12 and located below the roller 21.

[0104] In order to enable the rotation of the roller 21, in this embodiment, as follows: Figure 5 As shown, a support base 121 is fixedly installed on the support platform 12. The support base 121 has two sets and is located on both sides of the roller 21 respectively. A drive rod 31 is rotatably installed on the support base 121. The support platform 121 also includes a first motor 32 fixed on the support platform 12. A transmission mechanism 33 is provided on the peripheral wall of the roller 21. A drive gear 34 for driving the roller 21 to rotate through the transmission mechanism 33 is fixed on the drive rod 31.

[0105] Specifically, such as Figure 5 As shown, the transmission mechanism 33 includes two sets of guide shoulders 331, wherein the two guide shoulders 331 are fixedly installed on the peripheral wall of the roller 21 and distributed along the axial direction of the roller 21, and a transmission gear ring 332 that meshes with the drive gear 34 is fixedly provided on the guide shoulders 331.

[0106] With the above setup, the first motor 32 drives the drive rod 31 to rotate, which in turn drives the roller 21 to rotate through the drive gear 34 and the transmission gear ring 332, thereby realizing the tumbling of tea leaves inside the roller 21.

[0107] In order to support the roller 21 and restrict its sliding along the axial direction of the drive rod 31, a limiting roller 35 is fixedly provided on the drive rod 31 in this embodiment. The limiting roller 35 is fixedly connected to the drive gear 34. The peripheral wall of the limiting roller 35 abuts against the peripheral wall of the guide shoulder 331, and the side wall of the limiting roller 35 abuts against the side wall of the guide shoulder 331. Two transmission gear rings 332 are located between the two limiting rollers 35. The two limiting rollers 35 restrict the movement of the roller 21 along the axial direction of the drive rod 31, thereby improving the stability of the roller 21.

[0108] It is worth noting that the roller 21 is aligned with the feed inlet 104. The tea leaves tumble inside the roller 21. Even if the tea leaves can be transferred from the roller 21 to the inner cavity of the air separator 1, the limited height of the falling tea leaves will affect the sorting of the tea leaves.

[0109] In order to improve the air separation effect of tea, in this embodiment, it is also necessary to perform secondary screening of the tea inside the drum 21 and provide suitable conditions for the tea to enter the air separation box 1.

[0110] Specifically, such as Figure 2 and Figure 7 As shown, it also includes a second screening component 4 extending into the inner cavity of the drum 21. Specifically, the second screening component 4 includes a connecting platform 44, a screening rack 43 rotatably mounted on the connecting platform 44, and a drive source that drives the screening rack 43 to swing through a swing mechanism 45. The connecting platform 44 is also provided with an air distribution component 41 to provide a stable airflow for the tea leaves to float.

[0111] With the above setup, the inner tea leaves are transferred to the sieve rack 43 on the connecting platform 44 by the roller 21. Then, the drive source drives the sieve rack 43 to swing through the swing mechanism 45, so that the tea leaves shake on the sieve rack 43. At this time, stones or impurities in the tea leaves fall onto the connecting platform 44 through the sieve rack 43. As the sieve rack 43 swings, the tea leaves move towards the feed inlet 104 of the air separator box 1 and then fall from a height. At this time, the airflow provided by the air distribution component 41 blows the fallen tea leaves into the inner cavity of the air separator box 1, thereby realizing the air separation of the tea leaves.

[0112] In order to allow the tea leaves to move along with the drum 21 to the sieve rack 43 for sieving, in this embodiment, as follows: Figure 5 and Figure 6As shown, a number of deflecting plates 212 are fixedly provided on the inner wall of the roller 21. The deflecting plates 212 are evenly distributed around the circumference of the roller 21. The inner wall of the roller 21 is also fixedly provided with a retaining ring 213 that is fixedly connected to the end wall of the deflecting plate 212. The retaining ring 213 can restrict the tea leaves from flowing out from the end of the roller 21.

[0113] As the drum 21 rotates, the tea leaves located on the two adjacent deflectors 212 gradually move upwards from the bottom of the drum 21. When the tea leaves move above the horizontal plane containing the axis of the drum 21, there is a risk that the tea leaves located between the two adjacent deflectors 212 will fall downwards. Therefore, in this embodiment, as... Figure 7 and Figure 8 As shown, a baffle plate 22 located in the loading area 201 is also fixedly installed on the connecting platform 44. For details, please refer to... Figure 8 As shown, taking the instantaneous rotation of the roller 21 as an example, a rectangular coordinate system is established with the axis of the roller 21 as the origin. The feeding area 201 is located in the first quadrant, the second quadrant, and the third quadrant. Specifically, the baffle plate 22 is mainly located in the second quadrant.

[0114] It is worth noting here that, because the opening between the two deflectors 212 in the third quadrant faces the axis of the roller 21, and the opening is angled upwards, the tea leaves in the third quadrant will not fall downwards under the influence of gravity. Figure 2 and Figure 9 As can be seen, the sieve rack 43 is in a horizontal position. In order to transfer the tea leaves onto the sieve rack 43, the baffle plate 22 is mainly located in the second quadrant.

[0115] With the above setup, as the roller 21 rotates, the tea leaves between the two adjacent deflectors 212 will move from the third quadrant to the second quadrant. The tea leaves in the second quadrant are blocked by the baffle plate 22 to prevent them from falling downwards, thereby transferring the tea leaves to the top of the sieve rack 43 for the sieve rack 43 to screen the tea leaves.

[0116] In another embodiment, the same reference is made. Figure 8 and Figure 9 As shown, with the axis O of roller 21 as the origin, the direction of the Y-axis is taken as the second direction. The second direction is rotated counterclockwise by 45° around point O to reach the third direction OY'. The third direction OY' is then rotated counterclockwise by an angle δ to OY”. At this time, the area where OY' and OY” are located is the area where the baffle plate 22 is installed. Among them, the second direction OY is rotated counterclockwise by 135° to OY”’, as shown. Figure 9As shown, the baffle plate 22 leaves a drop area 221 between OY' and OY”'. The projection of the edge of the drop area 221 onto the screen surface 431 is an inclined straight line. When the tea leaves between the two baffle plates 212 flow to the drop area 221, the tea leaves gradually fall onto the screen frame 43, thereby covering the entire screen frame 43 with tea leaves and preventing the tea leaves from accumulating on the screen frame 43.

[0117] Specifically, the angle between the projection of the lever 212 onto the horizontal plane containing the axis of the roller 21 and the axis of the roller 21 is α, which can be referred to as... Figure 6 As shown, as the drum 21 rotates, the tea leaves that fall between the two baffles 212 will move towards the air separator 1 along the direction of the baffles 212, so that the tea leaves are evenly distributed in the drum 21.

[0118] like Figure 8 As shown, the area formed by OY and OY' and the fourth quadrant serve as the residual material return zone 202. Tea leaves that fall off the edge of the screen frame 43 fall downward from the residual material return zone 202 and continue to be conveyed onto the screen frame 43 as the roller 21 rotates.

[0119] The screening rack 43 is made of mesh, which can let the stones and granular impurities in the tea leaves fall down to the receiving platform 44. The high-frequency oscillation of the screening rack 43 is achieved by the drive source through the oscillation mechanism 45, which further improves the separation effect of stones or impurities from tea leaves.

[0120] In order to transfer stones or impurities on the receiving platform 44 to the outside of the roller 21, such as Figure 7 and Figure 10 As shown, the connecting platform 44 is inclined, wherein the angle between the connecting surface of the connecting platform 44 and the horizontal plane is β. Specifically, the side of the connecting platform 44 closer to the air classifier box 1 is higher, and the side of the connecting platform 44 further away from the air classifier box 1 is lower. Here, "lower" and "higher" are relative to the connecting platform 44 itself. The screening rack 43 drops the screened stones or granular impurities onto the connecting platform 44, and the connecting platform 44 rolls outward from the roller 21 as the inclined surface of the connecting platform 44 is tilted.

[0121] To achieve the installation of the docking station 44, in this embodiment, as follows: Figure 2 , Figure 7 and Figure 10 As shown, two vertically downward extending support legs 61 are fixedly provided on the connecting platform 44. The support legs 61 are fixedly installed on the supporting platform 12. The platform also includes a support frame 62. One end of the support frame 62 extends through the feed port 104 into the inner cavity of the air classifier 1 and is then fixedly installed on the side wall of the inner cavity of the air classifier 1. The other end of the support frame 62 is fixedly installed on the connecting platform 44.

[0122] To achieve the installation of the screening frame 43, in this embodiment, as follows: Figure 7 and Figure 10 As shown, a vertically upward-extending support rod 441 is fixedly provided on the top wall of the connecting platform 44. The screening frame 43 is rotatably connected to the support rod 441 via a rotating shaft 442. A vertically upward-extending support plate 443 is fixedly provided on the side of the connecting platform 44 near the air separator 1. A guide groove 4431 is provided on the side wall of the support plate 443, wherein the rotation axis of the guide groove 4431 is coaxial with the rotating shaft 442. Figure 14 As shown, a guide block 432 is fixedly provided on the side wall of the screening frame 43 and inserted into the guide groove 4431, wherein the guide block 432 is slidably connected to the guide groove 4431.

[0123] The drive source enables the screen frame 43 to swing around the rotating shaft 442 via the swing mechanism 45.

[0124] After the sieving frame 43 swings, the tea leaves on the sieving frame 43 fall downwards from the end away from the rotating shaft 442. In order for the fallen tea leaves to enter the air separator 1 for screening by airflow, specifically, in this embodiment, as follows: Figure 2 , Figure 7 and Figure 10 As shown, the air distribution component 41 includes an air distribution box 411, wherein the air distribution box 411 is fixedly installed on the bottom wall of the connecting platform 44, and a first air outlet 4112 is provided on one side wall of the air distribution box 411, which is aligned with the feed inlet 104 of the air separator 1. The air distribution box 411 is also provided with an air inlet 4111 connected to an external air source.

[0125] With the above settings, when an external air source supplies gas to the gas distribution box 411 through the air inlet 4111, the gas in the gas distribution box 411 is blown out through the first air outlet 4112. The gas flowing out from the first air outlet 4112 forms a stable airflow, which in turn blows the tea leaves falling from the sieve rack 43 into the air separator 1.

[0126] Since the roller 21 is located outside the air separator 1, in order to prevent tea leaves from falling into the gap between the roller 21 and the sieve frame 43, in this embodiment, as follows: Figure 5 As shown, the end of the roller 21 is provided with a guide ring 7 that passes through the feed inlet 104 and enters the inner cavity of the air classifier 1. The guide ring 7 is used to connect the roller 21 and the air classifier 1.

[0127] After the screening frame 43 swings, stones and granular impurities fall onto the receiving platform 44. To improve the effect of conveying stones to the outside of the roller 21, in this embodiment, as follows: Figure 12 As shown, the gas distribution box 411 is also provided with a second air outlet 4113 that blows towards the connecting platform 44. The interior of the gas distribution box 411 is also provided with a diverter plate 4114 that separates the gas entering through the air inlet 4111 into the first air outlet 4112 and the second air outlet 4113. The airflow blown out by the second air outlet 4113 flows away from the air separator 1.

[0128] It is worth noting that during the tea winnowing process, the gas entering the gas distribution box 411 from the air inlet 4111 is partially directed to the second air outlet 4113 by the flow divider plate 4114. At this time, the gas blown out from the second air outlet 4113 blows the stones and particulate impurities outward along the platform of the connecting table 44 and out of the roller 21.

[0129] It is worth noting that the platform of the connecting table 44 is equipped with connecting guide plates 444. There are two connecting guide plates 444 arranged symmetrically. The cross-section of the connecting guide plates 444 is V-shaped. The stones falling from the screen frame 43 fall onto the connecting guide plates 444. The airflow blown out by the second air outlet 4113 is between the two connecting guide plates 444, thereby blowing the stones out of the roller 21 and preventing the stones from falling back into the roller 21 during the process of blowing the stones out of the second air outlet 4113.

[0130] In order to achieve the oscillation of the screen frame 43, in this embodiment, as follows: Figure 14 As shown, the swing mechanism 45 includes a turntable 451 rotatably mounted on a support plate 443. An eccentric rod 452 is fixedly mounted at an eccentric position on the turntable 451. A swing rod 453 is rotatably connected to the eccentric rod 452. The swing rod 453 is rotatably connected to the guide block 432 through a pin 454.

[0131] By rotating the turntable 451, the eccentric rod 452 can rotate around the axis of the turntable 451. At this time, the guide block 432 will slide in the guide groove 4431 through the swing rod 453, so that the screening frame 43 swings back and forth around the rotating shaft 442, which facilitates the secondary screening of tea leaves.

[0132] In order to make the turntable 451 rotate, a drive source can be used to drive the turntable 451 to rotate.

[0133] In this embodiment, as Figure 14 As shown, the driving source includes a first driving component 422, which includes a second motor 4221, a first gear 4222, a second gear 4223, and a dispersing tube 4211. The dispersing tube 4211 is arranged along the width direction of the screen frame 43 and is rotatably mounted on the support plate 443. The turntable 451 is fixedly connected to the dispersing tube 4211. The second motor 4221 is fixedly mounted on the connecting platform 44. The output shaft of the second motor 4221 is fixedly connected to the first gear 4222, and the second gear 4223 is fixedly mounted on the dispersing tube 4211. The first gear 4222 and the second gear 4223 mesh with each other.

[0134] Since the dispersing tube 4211 is rotatably mounted on the support plate 443 and located above the sieve frame 43, when the sieve frame 43 swings to a position close to the dispersing tube 4211, the gap between the dispersing tube 4211 and the sieve frame 43 is small. In order to allow the tea leaves to pass smoothly through the gap between the dispersing tube 4211 and the sieve frame 43 and fall downwards, in this embodiment, the dispersing component 42 includes several first dispersing support rods 4212 fixed on the peripheral wall of the dispersing tube 4211. When the tea leaves move on the sieve frame 43 to the position of the dispersing tube 4211, the dispersing tube 4211 drives the first dispersing support rods 4212 to rotate, thereby pushing the tea leaves outwards from the gap between the dispersing tube 4211 and the sieve frame 43, so that the tea leaves fall off the sieve frame 43.

[0135] When tea leaves fall from the drop area 221 of the baffle plate 22 onto the sieve rack 43, the tea leaves tend to tangle together and form clumps. When the tea leaves fall from the sieve rack 43, the clumps of tea leaves are quite heavy. Although the airflow blows the tea leaves to sieve them, the clumps of tea leaves will still fall to the first screening position 101, which will reduce the air separation effect of the tea leaves. Therefore, it is necessary to separate the clumps of tea leaves on the sieve rack 43.

[0136] Specifically, in this embodiment, such as Figure 13 and Figure 14 As shown, a second dispersing structure 423 is also installed on the dispersing tube 4211, which moves back and forth along the axis of the dispersing tube 4211. The second dispersing structure 423 cooperates with the first dispersing support rod 4212 to separate the clumps of tea leaves and solve the problem of tea leaves tangling together.

[0137] The second dispersing structure 423 includes a push rod 4231, a second dispersing support rod 4232, a first driving structure 4241, and a second driving structure 4242. Specifically, the first driving structure 4241 is a compression spring, and the second driving structure is a swashplate. The swashplate is fixedly mounted on the output shaft of the second motor 4221. The push rod 4231 is installed in the inner cavity of the dispersing tube 4211 and is slidably connected to the inner wall of the dispersing tube 4211 along the axial direction of the dispersing tube 4211. The compression spring is installed in the inner cavity of the dispersing tube 4211. One end of the compression spring abuts against the push rod 4231, and the other end of the compression spring abuts against the inner wall of the dispersing tube 4211. The end of the push rod 4231 away from the compression spring abuts against the end wall of the swashplate. The second dispersing support rod 4232 is fixedly mounted on the push rod 4231 and extends outward through the dispersing tube 4211.

[0138] Specifically, in this embodiment, such as Figure 15 As shown, the dispersing tube 4211 is provided with a sliding groove 4233 arranged along the axial direction of the dispersing tube 4211, wherein the second dispersing support rod 4232 extends outward along the radial direction of the dispersing tube 4211 through the sliding groove 4233.

[0139] With the above settings, when the second motor 4221 drives the dispersing tube 4211 to rotate, as follows: Figure 14 As shown, the swashplate rotates and switches between the solid and dashed lines to push the push rod 4231. During this process, the push rod 4231 moves back and forth along the axis of the dispersing tube 4211, thereby driving the second dispersing support rod 4232 to move back and forth between approaching and moving away from the first dispersing support rod 4212.

[0140] It is worth noting that the rotation of the dispersing tube 4211 and the reciprocating movement of the push rod 4231 are both driven by the second motor 4221. When the guide block 432 is at the top of the guide groove 4431, the sieve frame 43 is close to the dispersing tube 4211, and the gap between the dispersing tube 4211 and the sieve frame 43 is relatively small. At the same time, the second dispersing support rod 4232 is close to the first dispersing support rod 4212, and both can be inserted into the clump of tea leaves at the same time. When the second motor 4221 continues to rotate, the sieve frame 43 will move downward and gradually move away from the dispersing tube 4211. At this time, the second dispersing support rod 4232 will move away from the first dispersing support rod 4212, thereby separating the clump of tea leaves and dispersing the tea leaves. During this process, the separated and dispersed tea leaves will fall downward from the end of the sieve frame 43 and be blown into the air classifier box 1 by the airflow blown out of the air distribution box 411, thereby improving the effect of tea leaf air separation.

[0141] Because the dispersing tube 4211 has a sliding groove 4233 on its peripheral wall for the second dispersing support rod 4232 to slide, a gap will remain between the second dispersing support rod 4232 and the sliding groove 4233. Tea leaves can easily extend into this gap, causing damage to the tea leaves. Therefore, in this embodiment, if... Figure 17 As shown, it also includes a sealing piece 42321, wherein the sealing piece 42321 is fixedly installed on the outside of the dispersing tube 4211 and blocks the sliding groove 4233 to prevent tea leaves from extending into the sliding groove 4233 and reduce damage during the tea leaf winnowing process.

[0142] To facilitate the installation of the second disintegration support rod 4232, such as Figure 15 and Figure 17 As shown, the push rod 4231 is provided with a threaded hole 42311, and the second disintegrating support rod 4232 is threadedly connected to the threaded hole 42311.

[0143] It is worth noting that, because the sliding groove 4233 is blocked by the sealing plate 42321, when the second dispersing support rod 4232 moves towards the first dispersing support rod 4212, the sealing plate 42321 is prone to abutting against the first dispersing support rod 4212, thereby affecting the movement of the second dispersing support rod 4232. Therefore, in this embodiment, as... Figure 15As shown in the figure, this is a schematic cross-sectional view of the dispersing tube 4211. Here, the second dispersing support rod 4232 and the first dispersing support rod 4212 form an included angle γ, which causes the sealing piece 42321 to be misaligned with the first dispersing support rod 4212, so that the first dispersing support rod 4212 can abut against the second dispersing support rod 4232, making it convenient for the first dispersing support rod 4212 and the second dispersing support rod 4232 to be inserted into the clump of tea leaves.

[0144] A method for producing tea:

[0145] like Figure 18 As shown,

[0146] The freshly picked leaves are placed on a spreading machine located in an air-conditioned room to control the moisture content of the leaves.

[0147] The strips are processed using a continuous blanching and shaping machine;

[0148] The tea leaves are processed by air separation machine as described above, and tea leaves of different qualities are separated.

[0149] The rehumidification machine is placed in a separate air-conditioned room, and a multi-layer rehumidification machine is used to rehumidify the tea leaves after air separation.

[0150] The dryer is set to a high-temperature drying fire to perform the first drying process on the re-moistened tea leaves, which promotes the aroma of the tea.

[0151] A double rehydration process is used to ensure uniform internal moisture of the tea leaves and to guarantee the uniformity of drying.

[0152] The tea leaves are dried a second time after being rehydrated using a low-temperature slow drying method. This process ensures the tea leaves retain moisture while further enhancing their aroma before packaging the finished product.

[0153] Among them, the tea spreading machine can be a metering spreading machine, which can control the moisture content of tea leaves through data.

[0154] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0155] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0156] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A tea leaf air separator, characterized in that, The air separator is used to screen the materials to be screened, and the air separator includes... An air separator (1) is provided with a plurality of screening positions (10) arranged sequentially along the first direction (X); The first screening component (2) is located at one end of the air separator (1) along the first direction (X), and the first screening component (2) is connected to the air separator (1). The first screening component (2) and each screening position (10) have different spacings in the first direction (X). The first driving component (3) is rotatably connected to the first screening component (2) to remove impurities from the material to be screened. A second filtering component (4) is disposed inside the first filtering component (2) and is used to filter the items to be filtered by the first filtering component (2). The second screening component (4) includes a gas distribution element (41). The air distribution component (41) is used to drive the material to be screened to move along the first direction (X). Under the blowing of the air distribution component (41), the material to be screened forms multiple parabolas moving along the first direction (X) according to the different densities of the material to be screened. The parabolas have different landing points in the first direction (X), and the landing points of the parabolas are set corresponding to the screening positions (10). The second filtering component (4) includes, The device comprises a dispersing component (42) and a screening frame (43). The dispersing component (42) is located on one side of the screening frame (43), which is used to screen impurities in the material to be screened. The screening frame (43) has a screening surface (431) on the side near the dispersing component (42), on which the material to be screened is supported. The dispersing component (42) moves relative to the screening surface (431) to disperse the material to be screened. The disassembled component (42) includes, A first dispersing structure (421) and a first driving member (422) are connected to the first dispersing structure (421) to drive the first dispersing structure (421) to rotate circumferentially relative to the screen surface (431) to disperse the material to be screened. A second dispersing structure (423) and a second driving member (424) are connected to the second dispersing structure (423) to drive the second dispersing structure (423) to rotate circumferentially and / or move laterally relative to the screen surface (431) to disperse the material to be screened. The first disintegration structure (421) includes, Dispersing tube (4211), first dispersing support rod (4212), the first dispersing support rod (4212) is connected to the dispersing tube (4211), and the first dispersing support rod (4212) extends radially along the dispersing tube (4211); The first driving member (422) is connected to the dispersing tube (4211) to drive the dispersing tube (4211) to rotate; The second disintegration structure (423) includes, The device includes a push rod (4231) and a second dispersing support rod (4232). A driving cavity is laterally arranged inside the dispersing tube (4211). The push rod (4231) is located inside the driving cavity. A sliding groove (4233) is laterally arranged on the dispersing tube (4211). The sliding groove (4233) communicates with the driving cavity. The second dispersing support rod (4232) passes through the sliding groove (4233) and is connected to the push rod (4231). The second drive element (424) includes, A first driving structure (4241) and a second driving structure (4242) are located at the two ends of the push rod in the lateral direction. The first driving structure (4241) and the second driving structure (4242) are used to drive the push rod (4231) to move laterally in the driving cavity.

2. The tea leaf air separator according to claim 1, characterized in that, The second filtering component (4) also includes, A connecting platform (44) is located on one side of the screening rack (43), and the screening rack (43) is located between the connecting platform (44) and the disintegrating component (42). The connecting platform (44) is used to carry the impurities screened by the screening rack (43). The connecting platform (44) forms a first angle with the horizontal plane.

3. The tea leaf air separator according to claim 2, characterized in that, The air distribution component (41) includes, Gas source; A gas distribution box (411) is provided with a gas distribution cavity inside. The gas distribution box is provided with an air inlet (4111) and a first air outlet (4112) at both ends along the first direction. The air inlet (4111) and the first air outlet (4112) are connected to the gas distribution cavity. A first gas flow channel is formed in the gas distribution cavity from the air inlet (4111) to the first air outlet (4112). The gas source generates an airflow, and the airflow is blown towards the air separator (1) through the first gas flow channel.

4. The tea leaf air separator according to claim 3, characterized in that, The gas distribution box (411) also includes, The second air outlet (4113) is connected to the air distribution cavity. A second gas flow channel is formed in the air distribution cavity from the air inlet (4111) to the second air outlet (4113). The airflow is blown towards the docking platform (44) through the second gas flow channel. The flow divider (4114) is located between the first gas flow channel and the second gas flow channel to divide the airflow into a first airflow and a second airflow. The first airflow is used to blow towards the air separator (1), and the second airflow is used to blow towards the connecting platform (44).

5. The tea leaf air separator according to claim 1, characterized in that, The first filtering component (2) includes, A drum (21) with sieve holes (211) on it. As the drum (21) rolls, the sieve holes (211) are used to screen impurities in the material to be screened. A deflector (212) is disposed on the inner surface of the drum (21) and extends inward to form a deflecting area. The material to be screened is placed in the deflecting area. Under the rotation of the drum (21), the material to be screened placed in the deflecting area rotates synchronously with the drum (21).

6. The tea leaf air separator according to claim 5, characterized in that, The first filtering component (2) also includes, A baffle plate (22) is disposed between the screen surface (431) and the deflector plate (212), and the baffle plate (22) abuts against the deflector plate (212). Under the rotation of the roller (21), the material to be screened located in the deflector area rotates synchronously to the top of the screen surface (431). The dropping area (221) is located on one side of the baffle plate (22) and directly above the screen surface (431). Under the rotation of the roller (21), the material to be screened located in the agitation area falls onto the screen surface (431) through the dropping area (221).

7. A method for producing tea, characterized in that, The tea leaf air separator, comprising any one of claims 1 to 6, and the tea production method further comprising, Fresh leaves are placed on a withering machine to reduce the moisture content of the tea leaves. After the tea leaves have been spread out, they are placed into a continuous fixing and shaping machine for shaping. The shaped tea leaves are placed into an air separator for air separation. After winnowing, the tea leaves are placed in a rehumidifier for initial rehumidification. The tea leaves that have just been moistened are placed into a drying machine and dried at high temperature. A re-moistening process is used to re-moisten the tea leaves that have been dried at high temperature. The tea leaves that have undergone a second moisture re-drying process are placed in a drying machine for a second drying process. Finished product packaging.

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