A three-dimensional spreading equipment

Abstract

The present invention discloses a three-dimensional tea spreading device, comprising a drying tunnel, a pneumatic support net, a fixed frame, a nozzle, a pulse airflow generator, and a first guide plate. The pneumatic support net is horizontally laid inside the drying tunnel along the extension direction of the drying tunnel, with a concave surface formed in the center of the pneumatic support net; the nozzles are evenly distributed below the pneumatic support net, the pulse airflow generator is connected to the nozzles, and a plurality of first guide plates are obliquely arranged inside the drying tunnel and above the pneumatic support net. The dry gas output by the pulse airflow generator through the nozzles strongly penetrates the pneumatic support net, causing the concave surface in the center of the pneumatic support net to bulge upward to form a convex surface. The tea leaves on the pneumatic support net are quickly lifted up, and the tea leaves are fully contacted with the dry airflow. At the same time, the tea leaves contact the inclined first guide plate and move forward along the first guide plate. The tea leaves move from the entrance side to the exit side of the drying tunnel during the repeated movement of lifting and falling.

Description

Technical Field

[0001] The present invention relates to the field of tea spreading equipment, and in particular to a three-dimensional tea spreading equipment. Background Art

[0002] Spreading, also known as drying the leaves, spreading or spreading, refers to the process of spreading the fresh leaves evenly in a cool and ventilated environment after they are picked. The purpose is to release the moisture and grassy smell in the tea leaves, making the tea leaves softer and facilitating the next step of withering process.

[0003] The existing tea spreading process includes spreading fresh tea leaves on a spreading table to let them dry naturally, and then collecting the withered fresh leaves. During this process, the moisture content of the fresh tea leaves drops from 75% to 70%.

[0004] Since the spreading process needs to be carried out in a cool and ventilated environment, it takes up a large amount of indoor space and has high production costs. Some tea processing factories use tunnel dryers to output dry air to the tea leaves to improve the spreading efficiency of the tea leaves. However, the flow rate of the dry air in the tunnel is fast and the flow direction of the airflow is single. It is difficult for the dry air to evenly cover each piece of tea leaves, which easily leads to the problem of partial over-drying or under-drying of the tea leaves, affecting the quality of the tea leaves. Summary of the Invention

[0005] The purpose of the present invention is to provide a three-dimensional tea spreading device, which aims to solve the problem that the dry air inside the tunnel drying machine is difficult to evenly cover each piece of tea.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A three-dimensional tea spreading device comprises: a drying tunnel; a pneumatic bearing net horizontally laid inside the drying tunnel along the extension direction of the drying tunnel and having air permeability; a fixing frame fixedly connecting the drying tunnel and the edge of the pneumatic bearing net, so that other parts of the pneumatic bearing net naturally droop under the action of gravity; nozzles evenly distributed below the pneumatic bearing net, for spraying dry gas that can penetrate the pneumatic bearing net and cause the pneumatic bearing net to bulge upward onto the pneumatic bearing net; a pulse airflow generator connected to the nozzles and intermittently delivering dry gas to repeatedly lift and fall the tea leaves on the pneumatic bearing net; a guide part arranged inside the drying tunnel and above the pneumatic bearing net, comprising a plurality of first guide plates arranged along the extension direction of the drying tunnel, the two sides of the first guide plates contacting the two inner walls of the drying tunnel in the width direction, the first guide plates tilted toward the exit side of the drying tunnel, so that the lifted tea leaves move toward the exit side of the drying tunnel after contacting the first guide plates.

[0008] Furthermore, the bottom edge of the first guide plate is lower than the lowest rising height of the tea leaves, so that the lifted tea leaves are broken up when they contact the first guide plate, and the top edge of the first guide plate is higher than the highest rising height of the tea leaves, so that the lifted tea leaves roll while moving along the first guide plate.

[0009] Furthermore, air vents higher than the first guide plates are provided on both sides of the drying tunnel.

[0010] Furthermore, a shielding plate is movably connected to the outside of the drying tunnel, and a ventilation window is formed in the center of the shielding plate. The shielding plate partially covers the ventilation opening, allowing the dry gas to leave the drying tunnel through the ventilation window. The bottom and top edges of the first guide plate are respectively connected to a rotating member and a follower. The rotating member is rotatably connected to the drying tunnel, and the axis of the rotating member is horizontal and perpendicular to the extension direction of the drying tunnel. The follower rests on the bottom wall of the ventilation window.

[0011] Furthermore, the air vent, the shielding plate and the air vent window are all rectangular in shape, the top edge of the shielding plate is always higher than the top edge of the air vent, and the bottom edge of the shielding plate is always lower than the bottom edge of the air vent, the top edge of the air vent window is always lower than the top edge of the air vent, and the bottom edge of the air vent window is always higher than the bottom edge of the air vent.

[0012] Furthermore, a guide sleeve and a nut with a vertical axis are provided outside the drying tunnel, the shielding plate is fixedly connected to a guide column, the guide column and the guide sleeve are slidably connected, a bolt is installed inside the nut, and one end of the bolt contacts the bottom of the shielding plate.

[0013] Furthermore, it also includes: a third guide plate fixedly connected to the first guide plate, extending upward along the top edge of the first guide plate and toward the exit side of the drying tunnel; a blocking plate fixedly connected to the first guide plate, extending upward along the top edge of the first guide plate and toward the entrance side of the drying tunnel; wherein the angle between the first guide plate and the third guide plate is an obtuse angle, and the angle between the first guide plate and the blocking plate is a right angle or an obtuse angle, so that the third guide plate and the blocking plate form a waste chute opening upward; the length of the third guide plate is greater than the length of the blocking plate, so that the projection of the third guide plate in the vertical direction can at least partially cover the blocking plate.

[0014] Furthermore, a collection component with air permeability is attached to the outer side of the ventilation window; wherein, the collection component includes a first plate, a second plate and a third plate, the first plate is horizontally arranged and fixedly connected to the top edge of the ventilation window, the second plate is horizontally arranged and fixedly connected to the bottom edge of the shielding plate, and the third plate is vertically arranged and fixedly connected to the first plate and the second plate, wherein the first plate or the third plate is air permeable.

[0015] Furthermore, the drying tunnel is a thin-walled cylindrical shell with a rectangular cross-section. The two end faces of the drying tunnel are closed. An inlet for feeding is provided above one end of the drying tunnel, and an outlet for discharging is provided below one end of the drying tunnel.

[0016] Furthermore, a second guide plate is provided inside the drying tunnel, and the second guide plate is used to move the tea leaves entering from the feeding port onto the pneumatic supporting net.

[0017] Compared with the prior art, this application has the following beneficial effects:

[0018] A three-dimensional tea spreading device is provided. The dry gas output by the pulse airflow generator through the nozzle strongly penetrates the pneumatic carrier net, causing the concave surface in the center of the pneumatic carrier net to bulge upward to form a convex surface. The tea leaves on the pneumatic carrier net are quickly lifted up, and the tea leaves are fully exposed to the dry airflow. At the same time, the tea leaves contact the inclined first guide plate and move forward along the first guide plate. The tea leaves move from the entrance side to the exit side of the drying tunnel during the repeated movement of lifting and falling several times. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0020] Figure 1 A top view of an embodiment of the present invention;

[0021] Figure 2 for Figure 2 Cross-sectional view in the AA direction;

[0022] Figure 3 for Figure 2 Cross-sectional view in the BB direction;

[0023] Figure 4 for Figure 3 Stereographic projection of

[0024] Figure 5 A three-dimensional diagram of a working condition of an embodiment of the present invention;

[0025] Figure 6 is an assembly diagram of an embodiment of the present invention;

[0026] Figure 7 is a cross-sectional view of another working condition of an embodiment of the present invention;

[0027] The numbers in the figure represent the following:

[0028] 1- Drying tunnel; 11- Feed inlet; 12- Feed outlet; 13- Ventilation port; 14- Guide sleeve; 15- Nut; 16- Bolt; 17- First plate; 18- Second plate; 19- Third plate; 2- Pneumatic bearing net; 3- Fixed frame; 4- Nozzle; 6- Guide part; 61- First guide plate; 611- Rotating member; 612- Follower; 62- Second guide plate; 63- Third guide plate; 64- Blocking plate; 65- Waste chute; 7- Shielding plate; 71- Ventilation window; 72- Guide column. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The following provides a three-dimensional green spreading equipment.

[0031] Figure 1 A three-dimensional green spreading equipment was presented. Figure 2 The vertical section of the three-dimensional green spreading equipment is presented, combined with Figure 1 、 Figure 2 .

[0032] Three-dimensional spreading equipment includes:

[0033] Drying tunnel 1;

[0034] The pneumatic bearing net 2 is horizontally laid inside the drying tunnel 1 along the extension direction of the drying tunnel 1 and has air permeability;

[0035] The fixing frame 3 is used to fix the edges of the drying tunnel 1 and the pneumatic support net 2, so that the other parts of the pneumatic support net 2 can sag naturally under the action of gravity;

[0036] Nozzles 4 are evenly distributed below the pneumatic carrier mesh 2 and are used to spray dry gas toward the pneumatic carrier mesh 2, which is capable of penetrating the pneumatic carrier mesh 2 and causing the pneumatic carrier mesh 2 to bulge upward.

[0037] A pulse air flow generator (not shown) is connected to the nozzle 4 and intermittently delivers dry air to repeatedly lift and drop the tea leaves on the pneumatic carrier net 2;

[0038] The guide portion 6 is arranged inside the drying tunnel 1 and above the pneumatic support network 2. It includes a plurality of first guide plates 61 arranged along the extension direction of the drying tunnel 1. The two sides of the first guide plates 61 contact the two inner walls in the width direction of the drying tunnel 1. The first guide plates 61 are inclined toward the exit side of the drying tunnel 1, so that the lifted tea leaves move toward the exit side of the drying tunnel 1 after contacting the first guide plates 61.

[0039] The working principle of the three-dimensional green spreading equipment:

[0040] The drying tunnel 1 is used to provide a semi-enclosed tea-leaf spreading environment so as to control the temperature and humidity of the tea leaves.

[0041] The center of the pneumatic carrying net 2 naturally sags due to gravity to form a concave surface for carrying and supporting the tea leaves placed thereon.

[0042] The pulse airflow generator can be equipped with a high-pressure gas cylinder with a stop valve. The stop valve is intermittently opened to allow the high-pressure gas cylinder to intermittently supply dry gas to the nozzle 4. The dry gas strongly penetrates the pneumatic carrier net 2, causing the concave surface in the center of the pneumatic carrier net 2 to bulge upward to form a convex surface. The tea leaves on the pneumatic carrier net 2 are quickly lifted up. This action not only helps the tea leaves to fully contact with the dry airflow and increase the evaporation of moisture on the tea leaves, but also makes the tea leaves roll in the air, promoting uniform drying between the tea leaves.

[0043] The tea leaves on the pneumatic carrying net 2 are lifted upward by the airflow and contact the inclined first guide plate 61. The first guide plate 61 guides the tea leaves toward the exit of the tunnel, so that the tea leaves move from the entrance to the exit of the drying tunnel 1 in the process of repeated lifting and falling.

[0044] Figure 7 A cross-sectional view of a working condition of a three-dimensional green spreading equipment is presented, combined with Figure 7 .

[0045] The three-dimensional green spreading equipment can be stacked in a vertical direction, so that the inlets and outlets of several three-dimensional green spreading equipment are connected in series in sequence, thereby extending the working length of the three-dimensional green spreading equipment without increasing the floor space.

[0046] Figure 3 The cross section of the three-dimensional spreading equipment is shown. Figure 5 and Figure 6 The three-dimensional structure of the three-dimensional green spreading equipment is presented, combined with Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 .

[0047] The bottom edge of the first guide plate 61 is lower than the lowest rising height of the tea leaves, and the top edge of the first guide plate 61 is higher than the highest rising height of the tea leaves, so that the raised tea leaves are broken up when they contact the first guide plate 61, and roll while moving along the first guide plate 61, thereby increasing the contact area between the tea leaves and the drying air, promoting more uniform and effective drying.

[0048] A second guide plate 62 is also provided inside the drying tunnel 1 to enable the tea leaves entering from the feed port 11 to move smoothly to the pneumatic support net 2. In some designs, in order to ensure that the tea leaves move more smoothly from the feed port 11 to the pneumatic support net 2, a belt conveyor can be used instead of the second guide plate 62, thereby providing a smoother and more continuous tea conveying capacity and reducing damage to the tea leaves during transportation.

[0049] The pneumatic bearing net 2 is made of a fabric with good air permeability to ensure that air can pass freely, effectively drying the tea leaves, while supporting the weight of the tea leaves without hindering air circulation.

[0050] The drying tunnel 1 is a thin-walled cylindrical shell with a rectangular cross-section. The two end faces of the drying tunnel 1 are closed. An inlet 11 for feeding is provided above one end of the drying tunnel 1, and an outlet 12 for discharging is provided below one end of the drying tunnel 1.

[0051] Air vents 13 higher than the first guide plate 61 are provided on both sides of the drying tunnel 1. The air vents 13 allow the drying gas to leave the drying tunnel 1 after completing its drying task, which helps to control the internal air pressure and prevent the humidity from increasing due to the recycling of the drying gas.

[0052] During the spreading process of tea leaves, controlling the speed of the tea leaves moving along the drying tunnel 1 can control the spreading efficiency and quality of the tea leaves. To achieve this goal, Figure 4 Showed Figure 3 The local structure of the stereoscopic perspective, combined with Figure 3 、 Figure 4 .

[0053] A baffle plate 7 is movably connected to the outside of the drying tunnel 1. A ventilation window 71 is formed in the center of the baffle plate 7. The baffle plate 7 partially covers the ventilation opening 13, allowing dry gas to leave the drying tunnel 1 through the ventilation window 71. The bottom and top edges of the first guide plate 61 are respectively connected to a rotating member 611 and a follower 612. The rotating member 611 is rotatably connected to the drying tunnel 1, and the follower 612 rests on the bottom wall of the ventilation window 71. The baffle plate 7 is raised and lowered to cause the top edge of the first guide plate 61 to swing, thereby adjusting the inclination angle of the first guide plate 61. A flatter angle will allow the tea to pass through the tunnel faster, while a steeper angle will extend the tea's residence time in the tunnel, thereby adjusting the speed at which the tea moves along the drying tunnel 1.

[0054] Specifically:

[0055] The air vent 13, the shielding plate 7 and the air window 71 are all rectangular in shape. The top edge of the shielding plate 7 is always higher than the top edge of the air vent 13, and the bottom edge of the shielding plate 7 is always lower than the bottom edge of the air vent 13. The top edge of the air window 71 is always lower than the top edge of the air vent 13, and the bottom edge of the air window 71 is always higher than the bottom edge of the air vent 13, so that the up and down movement of the shielding plate 7 does not affect the area of ​​the air window 71, thereby avoiding affecting the amount of dry gas passing through.

[0056] A guide sleeve 14 and a nut 15 with a vertical axis are provided on the outside of the drying tunnel 1. The baffle plate 7 is fixedly connected to a guide column 72. The guide column 72 and the guide sleeve 14 are slidably connected. A bolt 16 is installed inside the nut 15. One end of the bolt 16 contacts the bottom of the baffle plate 7. Rotating the bolt 16 can move the baffle plate 7 upward.

[0057] The axis of the rotating member 611 is horizontal, and the axis of the rotating member 611 is perpendicular to the extension direction of the drying tunnel 1 .

[0058] In the process of spreading green tea leaves, dust and broken tea leaves are inevitable. In order to remove the dust and broken tea leaves mixed in the fresh tea leaves, Figure 6 The sorting structure of the three-dimensional green spreading equipment is presented, combined with Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 .

[0059] The three-dimensional spreading equipment also includes:

[0060] The third guide plate 63 is fixedly connected to the first guide plate 61 and extends upward along the top edge of the first guide plate 61 and toward the exit side of the drying tunnel 1;

[0061] The blocking plate 64 is fixedly connected to the first guide plate 61 and extends upward along the top edge of the first guide plate 61 and toward the entrance side of the drying tunnel 1;

[0062] Among them, the angle between the first guide plate 61 and the third guide plate 63 is an obtuse angle, the angle between the first guide plate 61 and the blocking plate 64 is a right angle or an obtuse angle, the length of the third guide plate 63 is longer and the length of the blocking plate 64 is shorter, so that the projection of the third guide plate 63 in the vertical direction can at least partially cover the blocking plate 64, so that the third guide plate 63 and the blocking plate 64 form a waste trough 65 that opens upward.

[0063] The sorting mechanism is:

[0064] When the tea leaves and other materials rise along the first guide plate 61 and reach the top, the light materials can continue upward along the third guide plate 63 and move onto the baffle plate 64, and then naturally fall into the waste chute 65. The heavier whole tea leaves, however, cannot reach the height of the top edge of the baffle plate 64 and thus complete their ascending path at the first guide plate 61.

[0065] Since the follower 612 rests on the bottom wall of the ventilation window 71, the waste trough 65 is always higher than the ventilation window 71. When the drying air flows from the interior of the drying tunnel 1 to the ventilation window 71, the dust and broken tea leaves accumulated in the waste trough 65 pass through the ventilation window 71 and leave the drying tunnel 1.

[0066] The staff observes the tea leaves leaving the ventilation window 71 in real time. When it is observed that intact tea leaves pass through the ventilation window 71, the baffle 7 can be raised or the output air pressure of the pulse airflow generator can be lowered. Conversely, when no dust or broken tea leaves pass through the ventilation window 71, the baffle 7 can be lowered or the output air pressure of the pulse airflow generator can be increased, thereby ensuring that waste materials in the fresh tea leaves are removed and high-quality tea leaves can continue to pass through the drying tunnel 1 for the spreading process.

[0067] Furthermore, a collection component with air permeability is attached to the outer side of the ventilation window 71, and the collection component is used to collect waste materials to facilitate cleaning and transportation by staff.

[0068] In some designs, the collection component can be a cloth bag that is mounted on the outside of the ventilation window 71.

[0069] Figure 3 and Figure 4 An optional embodiment of the collection assembly is presented, in combination with Figure 3 、 Figure 4 .

[0070] The collecting assembly includes a first plate 17, a second plate 18 and a third plate 19. The first plate 17 is horizontally arranged and fixedly connected to the top edge of the air vent 71, the second plate 18 is horizontally arranged and fixedly connected to the bottom edge of the shielding plate 7, and the third plate 19 is vertically arranged and fixedly connected to the first plate 17 and the second plate 18, wherein the first plate 17 or the third plate 19 is breathable.

[0071] The waste materials passing through the ventilation window 71 are temporarily stored in the groove formed by the shielding plate 7, the second plate 18 and the third plate 19, waiting for processing by staff.

[0072] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the embodiments of the present invention.

Claims

1. A three-dimensional spreading equipment, characterized in that: include: Drying tunnel (1); A pneumatic bearing net (2) is horizontally laid inside the drying tunnel (1) along the extension direction of the drying tunnel (1) and has air permeability; A fixing frame (3) fixedly connects the drying tunnel (1) and the edge of the pneumatic bearing net (2), so that other parts of the pneumatic bearing net (2) sag naturally under the action of gravity; Nozzles (4) are evenly distributed below the pneumatic carrier net (2) and are used to spray dry gas toward the pneumatic carrier net (2) that can penetrate the pneumatic carrier net (2) and cause the pneumatic carrier net (2) to bulge upward; a pulse air flow generator connected to the nozzle (4) and intermittently delivering dry air to cause the tea leaves on the pneumatic carrying net (2) to be repeatedly lifted and lowered; A guide portion (6) is arranged inside the drying tunnel (1) and above the pneumatic bearing net (2), comprising a plurality of first guide plates (61) arranged along the extension direction of the drying tunnel (1), wherein two sides of the first guide plates (61) contact two inner walls in the width direction of the drying tunnel (1), and the first guide plates (61) are inclined toward the exit side of the drying tunnel (1), so that the lifted tea leaves contact the first guide plates (61) and then move toward the exit side of the drying tunnel (1); Air vents (13) higher than the first guide plate (61) are provided on both sides of the drying tunnel (1); a shielding plate (7) is movably connected to the outside of the drying tunnel (1); a ventilation window (71) is formed at the center of the shielding plate (7); the shielding plate (7) partially covers the air vents (13), allowing dry gas to leave the drying tunnel (1) through the ventilation window (71); a rotating member (611) and a follower (612) are respectively connected to the bottom and top edges of the first guide plate (61); the rotating member (611) is rotatably connected to the drying tunnel (1); the axis of the rotating member (611) is horizontal and perpendicular to the extension direction of the drying tunnel (1); and the follower (612) rests on the bottom wall of the ventilation window (71); a third guide plate (63), fixedly connected to the first guide plate (61), extending upward along the top edge of the first guide plate (61) and toward the exit side of the drying tunnel (1); a blocking plate (64) fixedly connected to the first guide plate (61), extending upward along the top edge of the first guide plate (61) and toward the entrance side of the drying tunnel (1); in, The included angle between the first guide plate (61) and the third guide plate (63) is an obtuse angle, and the included angle between the first guide plate (61) and the blocking plate (64) is a right angle or an obtuse angle, so that the third guide plate (63) and the blocking plate (64) form a waste trough (65) opening upward; The length of the third guide plate (63) is greater than the length of the blocking plate (64), so that the projection of the third guide plate (63) in the vertical direction can at least partially cover the blocking plate (64).

2. A three-dimensional spreading device according to claim 1, characterized in that: The bottom edge of the first guide plate (61) is lower than the lowest rising height of the tea leaves, so that the tea leaves that are lifted up are scattered when they contact the first guide plate (61), and the top edge of the first guide plate (61) is higher than the highest rising height of the tea leaves, so that the tea leaves that are lifted up roll when they move along the first guide plate (61).

3. The three-dimensional spreading equipment according to claim 1, characterized in that: The air vent (13), the shielding plate (7) and the air vent window (71) are all rectangular in shape; the top edge of the shielding plate (7) is always higher than the top edge of the air vent (13); the bottom edge of the shielding plate (7) is always lower than the bottom edge of the air vent (13); the top edge of the air vent window (71) is always lower than the top edge of the air vent (13); and the bottom edge of the air vent window (71) is always higher than the bottom edge of the air vent (13).

4. The three-dimensional spreading equipment according to claim 1, characterized in that: A guide sleeve (14) and a nut (15) with a vertical axis are provided on the outside of the drying tunnel (1); a guide column (72) is fixedly connected to the shielding plate (7); the guide column (72) and the guide sleeve (14) are slidably connected; a bolt (16) is installed inside the nut (15); one end of the bolt (16) contacts the bottom of the shielding plate (7).

5. The three-dimensional spreading equipment according to claim 1, characterized in that: A collection component with air permeability is attached to the outer side of the air permeable window (71); The collecting assembly includes a first plate (17), a second plate (18) and a third plate (19), wherein the first plate (17) is horizontally arranged and fixedly connected to the top edge of the ventilation window (71), the second plate (18) is horizontally arranged and fixedly connected to the bottom edge of the shielding plate (7), and the third plate (19) is vertically arranged and fixedly connected to the first plate (17) and the second plate (18), wherein the first plate (17) or the third plate (19) is breathable.

6. The three-dimensional spreading equipment according to claim 1, characterized in that: The drying tunnel (1) is a thin-walled cylindrical shell with a rectangular cross-section. The two end faces of the drying tunnel (1) are closed. An inlet (11) for feeding materials is provided above one end of the drying tunnel (1), and an outlet (12) for discharging materials is provided below one end of the drying tunnel (1).

7. The three-dimensional spreading equipment according to claim 6, characterized in that: A second guide plate (62) is further provided inside the drying tunnel (1), and the second guide plate (62) is used to move the tea leaves entering from the feed port (11) onto the pneumatic bearing net (2).

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