Three-dimensional tedding equipment

Abstract

The invention discloses three-dimensional tedding equipment which comprises a drying tunnel, a pneumatic bearing net, a fixing frame, a nozzle, a pulse airflow generator and a first guide plate, the pneumatic bearing net is horizontally laid in the drying tunnel in the extending direction of the drying tunnel, and a concave surface is formed in the center of the pneumatic bearing net; the nozzles are evenly distributed below the pneumatic bearing net, the pulse airflow generator is connected with the nozzles, and the multiple first guide plates are obliquely arranged in the drying tunnel and located above the pneumatic bearing net. The pulse airflow generator strongly penetrates through the pneumatic bearing net through dry air output by the nozzle, so that a concave surface in the center of the pneumatic bearing net bulges upwards to form a convex surface, tea leaves on the pneumatic bearing net are quickly raised, and the tea leaves are in full contact with the dry air flow; meanwhile, the tea leaves make contact with the inclined first guide plate so as to move forwards along the first guide plate, and the tea leaves move to the outlet side from the inlet side of the drying tunnel in the repeated raising and falling movement process for multiple times.

Description

Technical Field

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

[0002] Spreading green, also known as drying green, 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 dissipate the moisture and grass 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 flow in the tunnel is fast and the flow direction of the air flow 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 object of the present invention is to provide a three-dimensional tea-leaf 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-leaf spreading device comprises: a drying tunnel; a pneumatic bearing net, which is horizontally laid inside the drying tunnel along the extension direction of the drying tunnel and has air permeability; a fixing frame, which is fixedly connected to the edges of the drying tunnel and the pneumatic bearing net, so that other parts of the pneumatic bearing net droop naturally under the action of gravity; nozzles, which are evenly distributed below the pneumatic bearing net and are used to spray dry gas that can penetrate the pneumatic bearing net and cause the pneumatic bearing net to bulge upward to the pneumatic bearing net; a pulse airflow generator, which is connected to the nozzles and intermittently delivers dry gas, so that the tea leaves on the pneumatic bearing net are repeatedly lifted and dropped; a guide part, which is arranged inside the drying tunnel and located above the pneumatic bearing net, and comprises a plurality of first guide plates arranged along the extension direction of the drying tunnel, the two sides of the first guide plates contact the two inner walls of the drying tunnel in the width direction, and the first guide plates are inclined toward the exit side of the drying tunnel, so that the lifted tea leaves contact the first guide plates and move toward the exit side of the drying tunnel.

[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 when moving along the first guide plate.

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

[0010] Further, a shielding plate is movably connected to the outside of the drying tunnel, a ventilation window is formed in the center of the shielding plate, the shielding plate partially covers the ventilation port, so that the dry gas leaves the drying tunnel through the ventilation window, the bottom edge and the top edge 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, the axis of the rotating member is horizontal and perpendicular to the extension direction of the drying tunnel, and 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 with 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 constitute a waste trough 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 air permeable 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 air permeable 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 feed inlet to the pneumatic bearing net.

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

[0018] A three-dimensional tea spreading device is provided, in which the dry gas output by the pulse airflow generator through the nozzle strongly penetrates the pneumatic bearing net, so that the concave surface in the center of the pneumatic bearing net bulges upward to form a convex surface, and the tea leaves on the pneumatic bearing net are quickly lifted up, and the tea leaves are fully in contact 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 several times. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[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 It 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-feeding port; 12-discharging port; 13-ventilation port; 14-guide sleeve; 15-nut; 16-bolt; 17-first plate; 18-second plate; 19-third plate; 2-pneumatic bearing net; 3-fixing frame; 4-nozzle; 5-pulse air flow generator; 6-guide part; 61-first guide plate; 611-rotating part; 612-follower; 62-second guide plate; 63-third guide plate; 64-blocking plate; 65-waste trough; 7-shielding plate; 71-ventilation window; 72-guide column. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] A three-dimensional green spreading device is provided below.

[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] The three-dimensional green 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 other parts of the pneumatic support net 2 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 that can penetrate the pneumatic carrier mesh 2 and cause the pneumatic carrier mesh 2 to bulge upwards.

[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 bearing net 2, and includes a plurality of first guide plates 61 arranged along the extension direction of the drying tunnel 1. Both 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 contact the first guide plates 61 and move toward the exit side of the drying tunnel 1.

[0039] Working principle of 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 deliver dry gas to the nozzle 4. The dry gas strongly penetrates the pneumatic bearing net 2, causing the concave surface in the center of the pneumatic bearing net 2 to bulge upward to form a convex surface. The tea leaves on the pneumatic bearing 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 surface of the tea leaves, but also causes the tea leaves to roll in the air, promoting uniform drying between the tea leaves.

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

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

[0045] The three-dimensional green spreading equipment can be stacked in the 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 3The cross section of the three-dimensional green 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 and promoting more uniform and effective drying.

[0048] A second guide plate 62 is also provided inside the drying tunnel 1, so that the tea leaves entering from the feed port 11 can be smoothly moved 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 delivery capacity and reducing damage to the tea leaves during the transmission process.

[0049] The pneumatic bearing net 2 is made of fabric with good air permeability to ensure that air can pass freely, effectively dry the tea leaves, and support 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] In the process of spreading the 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 Shown Figure 3 The local structure of the stereoscopic perspective, combined with Figure 3 , Figure 4 .

[0053] The outside of the drying tunnel 1 is movably connected to a shielding plate 7, and a ventilation window 71 is formed in the center of the shielding plate 7. The shielding plate 7 partially covers the ventilation port 13, so that the dry gas can 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 shielding plate 7 is raised and lowered to make the top edge of the first guide plate 61 swing, thereby adjusting the inclination angle of the first guide plate 61. A flatter angle allows the tea leaves to pass through the tunnel faster, while a steeper angle prolongs the tea leaves' stay time in the tunnel, thereby adjusting the speed at which the tea leaves move 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 passage amount of dry gas.

[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. The baffle plate 7 can be moved upward by rotating the bolt 16.

[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 inevitably present. 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 green 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 to move upward along the third guide plate 63 and move onto the blocking plate 64, and then naturally fall into the waste chute 65. The heavier whole tea leaves cannot reach the height of the top edge of the blocking plate 64, and thus complete their rising 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 dry airflow flows from the inside 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 plate 7 can be raised or the output air pressure of the pulse airflow generator can be lowered. Conversely, when dust-free or broken tea leaves pass through the ventilation window 71, the baffle plate 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 the staff to clear them away.

[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 a 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 the staff.

[0072] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope 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 essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A three-dimensional green spreading device, 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 mesh (2) and are used to spray dry gas toward the pneumatic carrier mesh (2) that can penetrate the pneumatic carrier mesh (2) and cause the pneumatic carrier mesh (2) to bulge upwards; a pulse airflow 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 dropped; 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), the two sides of the first guide plates (61) contacting two inner walls in the width direction of the drying tunnel (1), the first guide plates (61) being 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).

2. A three-dimensional green 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 lifted tea leaves 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 lifted tea leaves roll when moving along the first guide plate (61).

3. A three-dimensional green spreading device according to claim 2, characterized in that: Air permeable openings (13) higher than the first guide plate (61) are provided on both sides of the drying tunnel (1).

4. A three-dimensional green spreading device according to claim 3, characterized in that: The outside of the drying tunnel (1) is movably connected to a shielding plate (7), a ventilation window (71) is formed at the center of the shielding plate (7), the shielding plate (7) partially covers the ventilation opening (13), so that the dry gas leaves the drying tunnel (1) through the ventilation window (71), the bottom edge and the top edge 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), 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).

5. A three-dimensional green spreading device according to claim 4, 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).

6. A three-dimensional green spreading device according to claim 4, characterized in that: A guide sleeve (14) and a nut (15) with a vertical axis are arranged outside 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).

7. A three-dimensional green spreading device according to any one of claims 3 to 6, characterized in that: Also includes: 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) and extending upward along the top edge of the first guide plate (61) and toward the entrance side of the drying tunnel (1); in, The angle between the first guide plate (61) and the third guide plate (63) is an obtuse angle, and the 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).

8. The three-dimensional green spreading equipment according to claim 4, characterized in that: The outer side of the ventilation window (71) is attached with a collection component having air permeability; The collecting assembly comprises 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.

9. The three-dimensional green 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 arranged above one end of the drying tunnel (1), and an outlet (12) for discharging materials is arranged below one end of the drying tunnel (1).

10. The three-dimensional spreading equipment according to claim 9, characterized in that: A second guide plate (62) is also provided inside the drying tunnel (1), and the second guide plate (62) is used to move the tea leaves entering from the feed inlet (11) onto the pneumatic bearing net (2).

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