Rotary dryer with multi-stage lifting plates

Abstract

The utility model relates to the technical field of drying equipment, in particular to a rotary dryer with multistage lifting plates, which comprises a base and a barrel, and a gear ring on the outer side of the barrel is matched with a driving device on the base to realize rotation. The interior of the barrel is divided into a feeding area, a drying area and a discharging area, short lifting plates are arranged on the inner wall of the barrel in the feeding area, the rotating shaft is provided with separation blades, long lifting plates are arranged in the drying area, the rotating shaft is provided with a net plate, short lifting plates are arranged in the discharging area, the rotating shaft is provided with spiral blades, and the structures of the different areas work cooperatively. And the short and long lifting plates are inclined towards the outlet, so that the material movement is facilitated. The driving device is composed of a first driving motor, a speed reducer and a driving gear, and a rotating shaft is hollow and can introduce hot air to improve the drying effect. A spiral guide plate is arranged in the discharge pipe connected with the outlet of the barrel, so that discharge is facilitated. According to the rotary dryer, through reasonable design of the multiple stages of lifting plates and related structures, the material drying efficiency and quality are effectively improved, stable operation of equipment is guaranteed, and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a rotary dryer with multi-stage lifting plates. Background Technology

[0002] Rotary dryers are crucial material drying equipment in the industrial field, widely used in building materials, metallurgy, chemicals, coal, and other industries. They are primarily used to dry various damp materials to achieve specific humidity standards to meet the requirements of subsequent production and processing. A traditional rotary dryer typically consists of a horizontally placed cylinder, lifting plates mounted on the inner wall of the cylinder, a drive unit, and a hot air supply system. During operation, the material and hot air enter the cylinder together, and the drive mechanism causes the cylinder to rotate at a certain speed. The lifting plates on the inner wall of the cylinder continuously tumble the material as the cylinder rotates. The material falls under gravity, and during this process, the material comes into full contact with the hot air, transferring heat from the hot air to the material, causing the moisture in the material to evaporate continuously, thus achieving the drying purpose.

[0003] Chinese patent CN207797674U discloses a rotary dryer with multi-stage lifting plates, including a cylinder, vertical lifting plates, vertical arc lifting plates, and inclined arc lifting plates. Each of the vertical, vertical arc, and inclined arc lifting plates includes a working plate and a base plate connected to each other. The base plate is installed on the inner wall of the cylinder. The working plate of the vertical lifting plate is perpendicular to the base plate; the working plate of the vertical arc lifting plate is perpendicular to the base plate and has an arc-shaped top; the working plate of the inclined arc lifting plate forms an acute angle with the base plate and also has an arc-shaped top. The working plates of the vertical, vertical arc, and inclined arc lifting plates have the same width and their heights increase sequentially. The vertical, vertical arc, and inclined arc lifting plates are evenly distributed in the feeding area, middle area, and discharge area of ​​the cylinder, and all face the same direction. This utility model uses a multi-stage lifting plate arrangement with progressively increasing lifting plate height, ensuring drying effect and achieving better calorific value utilization.

[0004] The technical solution provided by the above patent uses a single lifting plate for material turning in each section of the cylinder, which is a single method and has poor drying effect. Utility Model Content

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A rotary dryer with multi-stage lifting plates is characterized by comprising a base and a cylinder. Two sets of gear rings are arranged on the outer side of the cylinder. A driving device is arranged on the base corresponding to the gear rings. An annular auxiliary track is also arranged on the outer side of the cylinder. Rollers are arranged on the base corresponding to the annular auxiliary track. The cylinder is divided into three zones from the inlet to the outlet: a feeding zone, a drying zone, and a discharging zone. A rotating shaft is arranged coaxially with the cylinder inside. The inner wall of the feeding zone is provided with several short lifting plates, and several dividing blades are arranged along the extension direction of the rotating shaft on the outer side. The inner wall of the drying zone is provided with several long lifting plates, and several mesh plates are arranged along the extension direction of the rotating shaft on the outer side. The inner wall of the discharging zone is provided with several short lifting plates, and several spiral blades are arranged along the extension direction of the rotating shaft on the outer side.

[0007] Preferably, both the short and long lifting plates are inclined downwards toward the outlet.

[0008] Preferably, the driving device includes a drive motor, the output end of which is connected to the input end of a reducer, and the output end of the reducer is provided with a drive gear that meshes with a gear ring.

[0009] Preferably, the cylinder is provided with a rotating shaft support at both ends, and the two ends of the rotating shaft are rotatably mounted in the rotating shaft support. A second drive motor is fixedly mounted on the outside of one of the rotating shaft supports, and the output end of the second drive motor is connected to one end of the rotating shaft.

[0010] Preferably, the rotating shaft is a hollow shaft with several air outlet holes on its outer side wall. The other end of the rotating shaft is provided with a rotating end cap, and a vent pipe is connected to the middle of the end cap. The vent pipe is connected to the air outlet of the air pump, and the air inlet of the air pump extends to the air outlet of the hot air furnace through a pipeline.

[0011] Preferably, a discharge pipe is also connected to the outlet of the cylinder, and a spiral guide plate is provided on the inner wall of the discharge pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention improves drying efficiency and quality by using multi-stage lifting plates with different structures to treat materials specifically in the feeding, drying, and discharging zones. The synergistic effect of short lifting plates, long lifting plates, dividing blades, mesh plates, and spiral blades ensures that the material is fully dispersed and in full contact with hot air during the drying process, reducing drying time and improving drying uniformity.

[0014] The annular auxiliary track and rollers in this invention enhance the stability of the cylinder rotation and reduce energy consumption during equipment operation. Simultaneously, the rational design of the drive device ensures smooth and efficient cylinder rotation.

[0015] The hollow shaft of this invention, connected to the hot air furnace, allows hot air to directly act on the material, further improving the drying effect. The spiral guide plate inside the discharge pipe facilitates material discharge and prevents material accumulation. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Fig. 2 This is a cross-sectional view of the cylindrical body of this utility model.

[0018] In the diagram: 1. Base; 2. Cylinder; 3. Gear ring; 4. Drive unit; 41. Drive motor one; 42. Reducer; 43. Drive gear; 5. Circular auxiliary track; 6. Roller; 7. Feeding area; 8. Drying area; 9. Discharge area; 10. Rotating shaft; 11. Short lifting plate; 12. Separating blade; 13. Long lifting plate; 14. Mesh plate; 15. Spiral blade; 16. Rotating shaft support; 17. Drive motor two; 18. Air outlet; 19. Discharge pipe; 20. Spiral guide plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0022] like Figs. 1-2 As shown, in this embodiment, a rotary dryer with multi-stage lifting plates includes a base 1 and a cylinder 2. Two sets of gear rings 3 are arranged on the outer side of the cylinder 2, and a drive device 4 is arranged on the base 1 corresponding to the gear rings 3. The gear rings 3 and the drive device 4 work together to provide power for the rotation of the cylinder 2. An annular auxiliary track 5 is also arranged on the outer side of the cylinder 2, and rollers 6 are arranged on the base 1 corresponding to the annular auxiliary track 5. The rollers 6 cooperate with the annular auxiliary track 5 to provide auxiliary support for the cylinder 2, making the cylinder 2 more stable during rotation. A hot air furnace is connected to the inlet end of the cylinder 2.

[0023] The cylinder 2 has three zones arranged from the inlet to the outlet: a feeding zone 7, a drying zone 8, and a discharging zone 9. This zoned design allows for targeted structural adjustments based on the material's needs at different drying stages. A rotating shaft 10 is coaxially mounted inside the cylinder 2.

[0024] In the feeding zone 7, several short lifting plates 11 are provided on the inner wall of the cylinder, and several dividing blades 12 are arranged along the extension direction of the rotating shaft 10 on the outer side of the rotating shaft 10. The short lifting plates 11 are used to initially lift the material so that the material can come into contact with the hot air, while the dividing blades 12 can divide the agglomerated material entering the feeding zone 7, making it more dispersed and facilitating subsequent drying operations.

[0025] The inner wall of the drying zone 8 is equipped with several long lifting plates 13, and several mesh plates 14 are arranged along the extension direction of the rotating shaft 10 on its outer side. Compared with the short lifting plates 11, the long lifting plates 13 can lift the material higher, increasing the contact time and area between the material and the hot air, thus improving drying efficiency. The mesh plates 14 can further screen and disperse the material, making the material more evenly distributed in the drying zone and ensuring the drying effect.

[0026] The inner wall of the discharge zone 9 is equipped with several short lifting plates 11, and several spiral blades 15 are arranged along the extension direction of the rotating shaft 10 on its outer side. The short lifting plates 11 continue to lift and tumble the material in the discharge zone 9 to ensure that the material is fully dried. The spiral blades 15 can push the dried material towards the discharge port for easy discharge.

[0027] Furthermore, both the short lifting plate 11 and the long lifting plate 13 are inclined downwards towards the outlet. This inclined arrangement facilitates the material to move naturally in the discharge direction under the action of gravity after being lifted.

[0028] The drive unit 4 includes a drive motor 41, the output end of which is connected to the input end of a reducer 42. The output end of the reducer 42 is provided with a drive gear 43, which meshes with the gear ring 3. The drive motor 41 provides power, which is reduced and increased in torque by the reducer 42, thereby driving the drive gear 43 to rotate, and in turn driving the cylinder 2 to rotate.

[0029] The cylinder 2 has rotating shaft supports 16 at both ends, and the two ends of the rotating shaft 10 are rotatably mounted in the rotating shaft supports 16. A second drive motor 17 is fixedly mounted on the outside of one of the rotating shaft supports 16, and the output end of the second drive motor 17 is connected to one end of the rotating shaft 10. The second drive motor 17 is used to drive the rotating shaft 10 to rotate, so that the separating blade 12, the mesh plate 14 and the spiral blade 15 on the rotating shaft 10 can perform their respective functions.

[0030] The rotating shaft 10 is a hollow shaft, and its outer wall is provided with several air outlets 18. A rotating end cap is provided at the other end of the rotating shaft 10, and a vent pipe is connected to the middle of the end cap. The vent pipe is connected to the air outlet of an air pump, and the air inlet of the air pump extends through a pipeline to the air outlet of the hot air furnace. Hot air generated by the hot air furnace is introduced into the rotating shaft by the air pump and then blown out through the air outlets, allowing the hot air to directly act on the material, further improving the drying effect.

[0031] A discharge pipe is also connected to the outlet of cylinder 2, and a spiral guide plate is installed on the inner wall of the discharge pipe. The spiral guide plate can guide the dried material to be discharged smoothly and prevent the material from accumulating at the discharge port.

[0032] The working principle and beneficial effects of the above technical solution are as follows:

[0033] In operation, drive motor 41 is started, which drives drive gear 43 to rotate via reducer 42, thus causing cylinder 2 to rotate. Simultaneously, drive motor 17 is started, driving shaft 10 to rotate. Wet material enters feeding zone 7 from the feed inlet of cylinder 2. Short lifting plates 11 lift the material, and separating blades 12 separate the agglomerated material. As cylinder 2 rotates, the material enters drying zone 8, where long lifting plates 13 lift the material even higher, and mesh plates 14 further screen and disperse the material. The material is fully in contact with hot air in the drying zone for deep drying. After drying, the material enters discharge zone 9, where short lifting plates 11 continue to turn the material, and spiral blades 15 push the material towards the discharge port. Passing through discharge pipe 19, spiral guide plates 20 guide the material out smoothly. During the entire drying process, the air pump 21 blows the hot air generated by the hot air furnace 22 through the air pipe 20, the rotating shaft 10 and the air outlet 18 onto the material, thereby improving the drying efficiency of the material and also further dispersing the material.

[0034] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. A rotary dryer with multi-stage lifting plates, characterized in that, Includes a base (1) and a cylinder (2). Two sets of gear rings (3) are provided on the outer side of the cylinder (2). A driving device (4) is provided on the base (1) corresponding to the gear rings (3). An annular auxiliary track (5) is also provided on the outer side of the cylinder (2). A roller (6) is provided on the base (1) corresponding to the annular auxiliary track (5). The cylinder (2) has three sections from the inlet to the outlet direction, namely the feeding area (7), the drying area (8), and the discharge area (9). A rotating shaft (10) is provided inside the cylinder (2) and rotates coaxially with the cylinder (2). The inner wall of the cylinder of the feeding zone (7) is provided with several short lifting plates (11) and several dividing blades (12) are arranged on the outer side of the rotating shaft (10) along the extension direction of the rotating shaft (10). The inner wall of the cylinder of the drying zone (8) is provided with several long lifting plates (13) and several mesh plates (14) are arranged on the outer side of the rotating shaft (10) along the extension direction of the rotating shaft (10). The inner wall of the cylinder of the discharge zone (9) is provided with several short lifting plates (11) and several spiral blades (15) are arranged on the outer side of the rotating shaft (10) along the extension direction of the rotating shaft (10).

2. A rotary dryer with multi-stage lifting plates according to claim 1, characterized in that: Both the short lifting plate (11) and the long lifting plate (13) are inclined downwards toward the outlet.

3. A rotary dryer with multi-stage lifting plates according to claim 1, characterized in that: The drive device (4) includes a drive motor (41), the output end of which is connected to the input end of a reducer (42), and the output end of the reducer (42) is provided with a drive gear (43), which meshes with a gear ring (3).

4. A rotary dryer with multi-stage lifting plates according to claim 1, characterized in that: The cylinder (2) has a rotating shaft bracket (16) at both ends inside. The two ends of the rotating shaft (10) are rotatably mounted inside the rotating shaft bracket (16). A second drive motor (17) is fixedly mounted on the outside of one of the rotating shaft brackets (16). The output end of the second drive motor (17) is connected to one end of the rotating shaft (10).

5. A rotary dryer with multi-stage lifting plates according to claim 4, characterized in that: The rotating shaft (10) is a hollow shaft. Several air outlet holes (18) are provided on the outer side wall of the rotating shaft (10). A rotating end cap is provided at the other end of the rotating shaft (10). A vent pipe is connected to the middle of the end cap. The vent pipe is connected to the air outlet of the air pump. The air inlet of the air pump extends to the air outlet of the hot air furnace through a pipeline.

6. A rotary dryer with multi-stage lifting plates according to claim 1, characterized in that: The outlet of the cylinder (2) is also connected to a discharge pipe (19), and a spiral guide plate (20) is provided on the inner wall of the discharge pipe (19).

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