Fluidized bed drying equipment

Abstract

The invention relates to the technical field of fluidized beds, in particular to fluidized bed drying equipment which comprises an air inlet base, a drying tower cylinder and an exhaust tower top, the drying tower cylinder is installed between the air inlet base and the exhaust tower top in a communicating mode, the air inlet base is located below the exhaust tower top, and a material supporting ventilation disc is rotationally inserted into the drying tower cylinder. The material supporting ventilation disc is provided with a vertically-through ventilation hole, a movable ring frame is arranged below the material supporting ventilation disc, and the movable ring frame is inserted into the drying tower cylinder in a sliding mode. Materials can enter the concave cavity through rotation of the concentric air cylinder, hot air in the concentric air cylinder dries the materials in the concave plate through the air holes, water vapor generated by the materials entering the concave plate under the hot air enters the interlayer cavity from the exhaust holes to be directly discharged, and the influence of the water vapor on the materials above is reduced; and meanwhile, new hot air enters the space of the materials from the air holes with different layer heights, so that the drying degree of the materials is increased.

Description

Technical Field

[0001] The invention relates to the technical field of fluidized beds, in particular to a fluidized bed drying device. Background Art

[0002] Fluidized bed is a reactor that uses gas or liquid to pass through a granular solid layer to put solid particles in a suspended motion state and carry out a gas-solid phase reaction process or a liquid-solid phase reaction process. Fluidized bed is mainly used to dry materials. The air is transported by a fan through the air inlet pipe on the fluidized bed to the reaction tower to cool the materials in the reaction tower.

[0003] Chinese patent CN217876775U discloses a fluidized bed drying device, including a shell, and a feed port is opened in the middle of the top surface of the shell, and a fluidized bed plate is installed on the inner bottom of the shell, and a discharge port is opened on the right outer side of the shell, a fan is installed on the left outer side of the shell, and the air outlet pipe of the fan is connected to the air inlet, and an air outlet is opened on the top right side of the shell, and also includes: a motor is installed on the inner bottom of the shell, and a shaft is connected to the output end of the motor, the top of the shaft is connected to the first cross bar through a bevel gear connector, and a flip plate is installed on the outer side of the first cross bar; the bottom of the shaft is connected to the fluidized bed plate through a bearing, and stirring blades are installed at equal angles below the shaft. The fluidized bed drying equipment can break up the materials for uniform feeding and uniform spreading to prevent dead bed, and can automatically clean the residual materials during cleaning. The above-mentioned related technologies have the following defects: when the materials are dried, the materials are dried from below by hot air, and the hot air drives the water vapor generated during the drying of the materials to flow upwards when it flows, but the water vapor evaporated from the materials at the bottom is easy to make the materials on the upper side wet again when it flows upwards, thereby reducing the drying efficiency. Therefore, a fluidized bed drying equipment is proposed. Summary of the invention

[0004] In order to reduce the wetting effect of water vapor produced when drying bottom materials on the materials on the upper side, the present invention provides a fluidized bed drying device.

[0005] A fluidized bed drying device provided by the present invention adopts the following technical scheme: it includes an air intake base, a drying tower and an exhaust tower top, the drying tower is connected and installed between the air intake base and the exhaust tower top, the air intake base is located below the exhaust tower top, a material support and air permeable disk is rotatably inserted inside the drying tower, the material support and air permeable disk is provided with air vents that pass through up and down, a movable ring frame is arranged below the material support and air permeable disk, the movable ring frame is slidably inserted into the interior of the drying tower, a power telescopic rod is installed on the bottom surface of the movable ring frame, the other end of the power telescopic rod is installed on the inner wall of the drying tower, a plurality of concentrically arranged inner gear rings are arranged on the inner ring side of the movable ring frame, the plurality of inner gear rings are fixed by horizontal connecting rods, the movable ring frame is rotatably sleeved on the outer surface of adjacent inner gear rings, the inner ring surface of each inner gear ring is meshed with a driven gear, a concentric air cylinder is rotatably inserted at the axis of the driven gear, and the bottom of the concentric air cylinder is open.

[0006] A recessed plate is fixedly connected to the circumferential side surface of one end of the concentric air cylinder located above the supporting and ventilating disk, a recessed cavity protrudes toward the interior of the concentric air cylinder from the recessed plate located inside the concentric air cylinder, an interlayer cavity is provided on the upper surface of the recessed plate, a plurality of exhaust holes connected to the interlayer cavity are provided on the inner wall of the recessed cavity of the recessed plate, a plurality of vent holes connected to the interior of the concentric air cylinder are provided on the other side of the recessed plate, a plurality of discharge troughs are provided on the outer annular surface of the drying tower and located above the supporting and ventilating disk, a discharge cylinder is installed on the outer surface of the drying tower, and the discharge trough is located on the inner side of the discharge cylinder.

[0007] Optionally, a plurality of cartridges are fixed to the bottom surface of the support material breathable disk, a cartridge lower end is slidably plugged with a cartridge rod, and a cartridge lower end is fixed to a movable ring frame.

[0008] Optionally, a torque motor is installed inside the movable ring frame, an outer gear ring is fixed to the lower end of the outermost inner gear ring among the multiple inner gear rings, a driving gear is meshed on the outer ring side of the outer gear ring, the driving gear is fixedly sleeved on the output end of the torque motor, a clamping ring is fixedly sleeved on the upper end of the outermost inner gear ring, a plurality of arc-shaped tooth plates are arranged on the outer ring side of the clamping gear ring, and the upper surface of the arc-shaped tooth plate is fixed to the bottom surface of the support material air permeable disk through a round rod.

[0009] Optionally, the bottom surface of the cartridge is located below the bottom surface of the driven gear, the upper surface of the clamping rod is flush with the upper surface of the inner gear ring, and the distance between the bottom surface of the clamping gear ring and the upper surface of the arc-shaped gear plate is greater than the depth of the cartridge.

[0010] Optionally, an arc-shaped cavity is provided on the inner bottom wall of the discharge trough, and a sealing plate is slidably inserted inside each discharge trough. The lower end of the sealing plate is slidably inserted inside the arc-shaped cavity, and a synchronization rod is fixed on the bottom surface of the sealing plate. The lower end of the synchronization rod slides through the inner ring wall of the adjacent arc-shaped cavity, and the lower end of the synchronization rod is fixed to the movable ring frame.

[0011] Optionally, the lower end of the discharge barrel is an eccentric cone, the upper end of the discharge barrel is a cylindrical structure, and the inner bottom wall of the discharge trough is flush with the upper surface of the supporting air-permeable disk.

[0012] Optionally, the inner gear ring is coaxially arranged with the support material breathable disk, and the driven gears meshing with the same inner gear ring are evenly distributed in an array around the axis of the inner gear ring.

[0013] Optionally, the recessed plate and the recessed cavity are in a matching spiral structure, and the spiral axis of the recessed plate is coaxially arranged with the connected concentric air cylinder.

[0014] Optionally, the inner annular surface of the arc-shaped tooth plate matches the outer annular surface of the adjacent latching tooth ring, and the plurality of arc-shaped tooth plates are evenly arrayed around the circumference of the axis of the inner tooth ring.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] 1. The present invention provides a concentric air cylinder, a recessed plate, a recessed cavity, an interlayer cavity and an exhaust hole. Hot air moves to the inside of the concentric air cylinder and above the support and ventilation disk through the exhaust hole of the support and ventilation disk and the lower end of the concentric air cylinder. When the concentric air cylinder rotates, materials continuously enter the inside of the spiral recessed plate. Then, the concentric air cylinder rotates to allow the materials to enter the recessed cavity. The hot air in the concentric air cylinder dries the materials in the recessed plate through the exhaust hole. The water vapor generated by the materials entering the recessed plate under the hot air enters the interlayer cavity through the exhaust hole and is directly discharged, thereby reducing the influence of the water vapor on the materials above. At the same time, new hot air enters the space of the materials from the exhaust holes at different heights, thereby increasing the degree of drying of the materials.

[0017] 2. The present invention provides a clamping rod, a clamping cylinder, a clamping tooth ring and an arc-shaped tooth plate. When the material is dried, when the inner tooth ring is meshed with the driven gear, the clamping cylinder is meshed with the clamping rod and the material-supporting air-permeable disk cannot rotate, so that the concentric air cylinder can rotate relative to the material-supporting air-permeable disk. After the drying is completed, the movable ring frame is controlled to move downward, and the clamping rod and the inner tooth ring move downward synchronously with the movable ring frame, driving the clamping rod to gradually move downward and disengage from the clamping cylinder. After the clamping rod is disengaged from the clamping cylinder, the movable ring frame continues to move downward and drives the clamping tooth ring to mesh with the arc-shaped tooth plate. Then, when the inner tooth ring continues to rotate, the clamping tooth ring and the arc-shaped tooth plate cooperate to drive the material-supporting air-permeable disk to rotate. When the material-supporting air-permeable disk rotates, the surface material gradually enters the discharge barrel from the discharge trough under the centrifugal force, thereby assisting the discharge of the material.

[0018] 3. The present invention sets a sealing plate and a synchronization rod. When the inner gear ring cooperates with the driven gear, the movable ring frame drives the sealing plate to seal the discharge chute through the synchronization rod to prevent undried materials from entering the discharge barrel. After drying, the movable ring frame moves downward to drive the sealing plate downward into the arc-shaped cavity, so that the material above the support and ventilation plate can enter the discharge barrel through the discharge chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure inside the drying tower in an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the connection between the movable ring frame and the power telescopic rod in an embodiment of the present invention;

[0022] Figure 4 It is a schematic front view of some structures in an embodiment of the present invention;

[0023] Figure 5 2 is a schematic diagram of the structure of the connection between the supporting and ventilating plate and the drying tower in an embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of the structure of the concentric air cylinder connected to the driven gear in an embodiment of the present invention;

[0025] Figure 7 is a schematic structural diagram of the connection between the outer gear ring and the driving gear in an embodiment of the present invention;

[0026] Figure 8 It is a schematic diagram of a partially cutaway structure of a concentric gas cylinder in an embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of an explosion of some structures in an embodiment of the present invention;

[0028] Fig.10 In the embodiment of the present invention Fig. 9 A schematic diagram of the enlarged structure in the middle.

[0029] Figure numerals: 1. air inlet base; 2. drying tower; 3. exhaust tower top; 4. support and ventilation plate; 5. movable ring frame; 6. power telescopic rod; 7. inner gear ring; 8. horizontal connecting rod; 9. concentric air cylinder; 10. driven gear; 11. recessed plate; 12. recessed cavity; 13. interlayer cavity; 14. exhaust hole; 15. ventilation hole; 16. discharge trough; 17. discharge cylinder; 18. clamping cylinder; 19. clamping rod; 20. torque motor; 21. outer gear ring; 22. clamping gear ring; 23. driving gear; 24. arc-shaped gear plate; 25. round rod; 26. arc-shaped cavity groove; 27. sealing plate; 28. synchronization rod. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 10 The present invention is described in further detail.

[0031] The embodiment of the present invention discloses a fluidized bed drying device. Figure 1-Figure 9As shown, it includes an air intake base 1, a drying tower 2 and an exhaust tower top 3. The drying tower 2 is connected and installed between the air intake base 1 and the exhaust tower top 3. The air intake base 1 is located below the exhaust tower top 3. The air intake base 1 is connected to the hot air supply device, and hot air is added into the drying tower 2 for drying. A support material ventilation plate 4 is rotatably inserted inside the drying tower 2. The support material ventilation plate 4 is provided with ventilation holes that pass through from top to bottom. Hot air can move to the top of the support material ventilation plate 4 through the ventilation holes of the support material ventilation plate 4.

[0032] A movable ring frame 5 is arranged below the supporting and ventilating disk 4, and the movable ring frame 5 is slidably inserted into the interior of the drying tower 2. A power telescopic rod 6 is installed on the bottom surface of the movable ring frame 5, and the other end of the power telescopic rod 6 is installed on the inner wall of the drying tower 2. A plurality of concentrically arranged inner gear rings 7 are arranged on the inner ring side of the movable ring frame 5, and the plurality of inner gear rings 7 are fixed by a horizontal connecting rod 8. The movable ring frame 5 is rotatably sleeved on the outer surface of the adjacent inner gear rings 7, and the inner ring surface of each inner gear ring 7 is meshed with a driven gear 10. The inner gear ring 7 is coaxially arranged with the supporting and ventilating disk 4, and the driven gears 10 meshed with the same inner gear ring 7 are evenly distributed in an array around the axis of the inner gear ring 7. A concentric air cylinder 9 is rotatably inserted at the axis of the driven gear 10, and the bottom of the concentric air cylinder 9 is open, and hot air can enter the concentric air cylinder 9 from the lower end of the concentric air cylinder 9.

[0033] A plurality of cartridges 18 are fixed to the bottom surface of the support material breathable disk 4, and a card rod 19 is slidably inserted at the lower end of the cartridge 18, and the lower end of the card rod 19 is fixed to the movable ring frame 5. When the movable ring frame 5 moves upward to drive the inner gear ring 7 to cooperate with the driven gear 10, the card rod 19 is inserted into the cartridge 18, so that the support material breathable disk 4 cannot rotate, ensuring that the concentric air cylinder 9 will not rotate relative to the support material breathable disk 4. A torque motor 20 is installed inside the movable ring frame 5, and an outer gear ring 21 is fixed to the lower end of the inner gear ring 7 located at the outermost side of the multiple inner gear rings 7, and a driving gear 23 is meshed on the outer ring side of the outer gear ring 21. The driving gear 23 is fixedly sleeved on the output end of the torque motor 20, and the torque motor 20 drives the inner gear ring 7 to rotate by meshing with the outer gear ring 21 through the driving gear 23. A card gear ring 22 is fixedly sleeved on the upper end of the inner gear ring 7 located at the outermost side. The outer ring side is provided with a plurality of arc-shaped tooth plates 24, the upper surface of which is fixed to the bottom surface of the support material air-permeable disk 4 through a round rod 25, the bottom surface of the cartridge 18 is located below the bottom surface of the driven gear 10, the upper surface of the clamping rod 19 is flush with the upper surface of the inner gear ring 7, the distance between the bottom surface of the clamping gear ring 22 and the upper surface of the arc-shaped tooth plate 24 is greater than the depth of the cartridge 18, the inner ring surface of the arc-shaped tooth plate 24 is matched with the outer ring surface of the adjacent clamping gear ring 22, and the plurality of arc-shaped tooth plates 24 are evenly arranged around the axis of the inner gear ring 7. When the inner gear ring 7 is matched with the driven gear 10, the clamping gear ring 22 is disengaged from the arc-shaped tooth plate 24, and when the movable ring frame 5 moves downward to drive the clamping rod 19 to disengage from the cartridge 18, the inner gear ring 7 is disengaged from the driven gear 10, and then when the movable ring frame 5 continues to move downward, the clamping gear ring 22 is matched with the arc-shaped tooth plate 24.

[0034] A concave plate 11 is fixedly connected to the circumferential side surface of one end of the concentric air cylinder 9 located above the support material venting plate 4. The part of the concave plate 11 located inside the concentric air cylinder 9 protrudes into the concentric air cylinder 9 with a concave cavity 12. An interlayer cavity 13 is provided on the upper surface of the concave plate 11. A plurality of exhaust holes 14 communicating with the interlayer cavity 13 are provided on the inner wall of the concave cavity 12 of the concave plate 11. A plurality of vent holes 15 communicating with the inside of the concentric air cylinder 9 are provided on the other side of the concave plate 11. The concave plate 11 has a spiral structure that matches the concave cavity 12. The spiral axis of the concave plate 11 is coaxially arranged with the connected concentric air cylinder 9. When the concentric air cylinder 9 rotates, the material enters the spiral concave plate 11 and the concave cavity 12. The water vapor generated by the material is separated from the material in time through the exhaust hole 14 and enters the interlayer cavity 13 to prevent the water vapor from adhering to the surface of the material on the upper side. At the same time, new hot air enters the material space from the air holes 15 at different heights to increase the degree of drying of the material.

[0035] A plurality of discharge troughs 16 are provided on the outer annular surface of the drying tower 2 and located above the support and ventilation disk 4. A discharge barrel 17 is installed on the outer surface of the drying tower 2. The discharge troughs 16 are located on the inner side of the discharge barrel 17. The lower end of the discharge barrel 17 is an eccentric cone, and the upper end of the discharge barrel 17 is a cylindrical structure. The inner bottom wall of the discharge trough 16 is flush with the upper surface of the support and ventilation disk 4. The discharge barrel 17 with a tapered lower end facilitates the discharge of materials from the lower end of the discharge barrel 17 after the materials enter the discharge barrel 17.

[0036] An arc-shaped cavity 26 is provided on the inner bottom wall of the discharge trough 16, and a sealing plate 27 is slidably inserted inside each discharge trough 16. The lower end of the sealing plate 27 is slidably inserted inside the arc-shaped cavity 26, and a synchronization rod 28 is fixed to the bottom surface of the sealing plate 27. The lower end of the synchronization rod 28 slides through the inner ring inner wall of the adjacent arc-shaped cavity 26, and the lower end of the synchronization rod 28 is fixed to the movable ring frame 5. When the inner gear ring 7 is engaged with the driven gear 10, the sealing plate 27 blocks the discharge trough 16, and when the arc-shaped tooth plate 24 is matched with the latch ring 22, the sealing plate 27 is retracted into the arc-shaped cavity 26.

[0037] The working principle is as follows: the dry material is added to the top of the support material ventilation plate 4 in the drying tower 2. During drying, the power telescopic rod 6 controls the movable ring frame 5 to drive the clamping rod 19 upward to cooperate with the clamping cylinder 18. At the same time, the inner gear ring 7 cooperates with the driven gear 10 to fill hot air from the air inlet base 1 into the drying tower 2. The hot air moves to the inside of the concentric air cylinder 9 and the top of the support material ventilation plate 4 through the vent holes of the support material ventilation plate 4 and the lower end of the concentric air cylinder 9. The torque motor 20 engages with the outer gear ring 21 through the driving gear 23 to drive the connected inner gear ring 7 to engage. The inner gear ring 7 drives all the inner gear rings 7 to rotate synchronously through the horizontal connecting rod 8. When the inner gear ring 7 rotates, it drives the meshed driven gear 10 and the concentric air cylinder 9 to rotate. During the rotation of the concentric air cylinder 9, materials continuously enter the spiral recessed plate 11, and then the concentric air cylinder 9 rotates to make the materials enter the recessed cavity 12. The hot air in the concentric air cylinder 9 passes through the air vent 1 5 dries the material in the recessed plate 11. The water vapor generated by the material entering the recessed plate 11 under the hot air enters the interlayer cavity 13 through the exhaust hole 14 and is directly discharged, thereby reducing the probability of the generated water vapor re-attaching to the surface of the material. At the same time, new hot air enters the space of the material from the air holes 15 at different layer heights, thereby increasing the degree of drying of the material. After the drying is completed, the movable ring frame 5 is controlled to move downward, and the clamping rod 19 and the inner gear ring 7 move downward synchronously with the movable ring frame 5, driving the clamping rod 19 to gradually move downward and disengage from the clamping cylinder 18. After the clamping rod 19 is disengaged from the clamping cylinder 18, the movable ring frame 5 continues to move downward and drives the clamping tooth ring 22 to engage with the arc-shaped tooth plate 24. Then, when the inner gear ring 7 continues to rotate, the clamping tooth ring 22 and the arc-shaped tooth plate 24 cooperate to drive the supporting vent plate 4 to rotate. When the supporting vent plate 4 rotates, the surface material gradually enters the discharging cylinder 17 from the discharging trough 16 under the centrifugal force, thereby assisting the discharge of the material.

[0038] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fluidized bed drying device, comprising an air intake base (1), a drying tower (2) and an exhaust tower top (3), wherein the drying tower (2) is connected and installed between the air intake base (1) and the exhaust tower top (3), and the air intake base (1) is located below the exhaust tower top (3), characterized in that: A material support and ventilation disk (4) is rotatably inserted inside the drying tower (2), and the material support and ventilation disk (4) is provided with ventilation holes that pass through from top to bottom. A movable ring frame (5) is arranged below the material support and ventilation disk (4), and the movable ring frame (5) is slidably inserted inside the drying tower (2). A power telescopic rod (6) is installed on the bottom surface of the movable ring frame (5), and the other end of the power telescopic rod (6) is installed on the inner wall of the drying tower (2). A plurality of concentrically arranged inner gear rings (7) are arranged on the inner ring side of the movable ring frame (5), and the plurality of inner gear rings (7) are fixed by horizontal connecting rods (8). The movable ring frame (5) is rotatably sleeved on the outer surface of adjacent inner gear rings (7), and the inner ring surface of each inner gear ring (7) is meshed with a driven gear (10). A concentric air cylinder (9) is rotatably inserted at the axis of the driven gear (10), and the bottom of the concentric air cylinder (9) is open. A recessed plate (11) is fixedly inserted on the circumferential side surface of one end of the concentric air cylinder (9) located above the supporting and ventilating disk (4); a recessed cavity (12) protrudes toward the interior of the concentric air cylinder (9) from the portion of the recessed plate (11) located inside the concentric air cylinder (9); an interlayer cavity (13) is provided on the upper surface of the recessed plate (11); a plurality of exhaust holes (14) communicating with the interlayer cavity (13) are provided on the inner wall of the recessed cavity (12) of the recessed plate (11); a plurality of vent holes (15) communicating with the interior of the concentric air cylinder (9) are provided on the other surface of the recessed plate (11); a plurality of discharge grooves (16) are provided on the outer annular surface of the drying tower (2) and located above the supporting and ventilating disk (4); a discharge cylinder (17) is installed on the outer surface of the drying tower (2); and the discharge groove (16) is located on the inner side of the discharge cylinder (17).

2. A fluidized bed drying device according to claim 1, characterized in that: A plurality of cartridges (18) are fixed on the bottom surface of the supporting material air-permeable disk (4), a cartridge rod (19) is slidably inserted at the lower end of the cartridge (18), and the lower end of the cartridge rod (19) is fixed to the movable ring frame (5).

3. A fluidized bed drying device according to claim 2, characterized in that: A torque motor (20) is installed inside the movable ring frame (5); an outer gear ring (21) is fixed to the lower end of the outermost inner gear ring (7) among the plurality of inner gear rings (7); a driving gear (23) is meshed on the outer ring side of the outer gear ring (21); the driving gear (23) is fixedly sleeved on the output end of the torque motor (20); a latching gear ring (22) is fixedly sleeved on the upper end of the outermost inner gear ring (7); a plurality of arc-shaped tooth plates (24) are arranged on the outer ring side of the latching gear ring (22); the upper surface of the arc-shaped tooth plates (24) is fixed to the bottom surface of the support material ventilation disk (4) through a round rod (25).

4. A fluidized bed drying device according to claim 3, characterized in that: The bottom surface of the cartridge (18) is located below the bottom surface of the driven gear (10), the upper surface of the clamping rod (19) is flush with the upper surface of the inner gear ring (7), and the distance between the bottom surface of the clamping gear ring (22) and the upper surface of the arc-shaped gear plate (24) is greater than the depth of the cartridge (18).

5. The fluidized bed drying equipment according to claim 1, characterized in that: The inner bottom wall of the discharge trough (16) is provided with an arc-shaped cavity groove (26), and a sealing plate (27) is slidably inserted in the interior of each discharge trough (16). The lower end of the sealing plate (27) is slidably inserted in the interior of the arc-shaped cavity groove (26), and a synchronization rod (28) is fixed to the bottom surface of the sealing plate (27). The lower end of the synchronization rod (28) slides through the inner ring inner wall of the adjacent arc-shaped cavity groove (26), and the lower end of the synchronization rod (28) is fixed to the movable ring frame (5).

6. The fluidized bed drying equipment according to claim 1, characterized in that: The lower end of the discharge barrel (17) is eccentrically conical, the upper end of the discharge barrel (17) is a cylindrical structure, and the inner bottom wall of the discharge trough (16) is flush with the upper surface of the supporting and ventilating disk (4).

7. The fluidized bed drying equipment according to claim 1, characterized in that: The inner gear ring (7) is coaxially arranged with the support material air permeable disk (4), and the driven gears (10) meshing with the same inner gear ring (7) are evenly distributed in an array around the axis of the inner gear ring (7).

8. The fluidized bed drying equipment according to claim 1, characterized in that: The recessed plate (11) and the recessed cavity (12) are in a matching spiral structure, and the spiral axis of the recessed plate (11) is coaxially arranged with the connected concentric air cylinder (9).

9. The fluidized bed drying equipment according to claim 3, characterized in that: The inner ring surface of the arc-shaped tooth plate (24) matches the outer ring surface of the adjacent latching tooth ring (22), and the plurality of arc-shaped tooth plates (24) are evenly arrayed around the axis of the inner tooth ring (7).

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