A discharge unit of a fluidized dryer

Abstract

The utility model provides a kind of discharging unit of fluidized bed dryer, including the discharging cylinder being installed at the discharging port of fluidized bed dryer, the middle part of one end of discharging cylinder is equipped with rotary hole, the edge of one end of discharging cylinder in rotary hole is equipped with inlet, rotationally connected with rotary hole in discharging cylinder is rotationally connected with the rotating shaft in discharging cylinder, the end away from rotary hole of discharging cylinder is equipped with driving motor, the power output shaft of driving motor is connected with the end of rotating shaft, the outer periphery of rotating shaft is equipped with multiple baffle pieces in discharging cylinder, the free edge of each baffle piece is contacted with the inner wall of discharging cylinder, the side wall of discharging cylinder close to driving motor is equipped with discharging port, discharging port and inlet are staggered distribution, and the number of baffle piece makes that discharging port is always not connected with inlet. The utility model can realize safe, efficient, continuous discharging while maintaining hot gas dynamic balance, effectively improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of fluidized bed dryers and relates to a discharge unit of a fluidized bed dryer. Background Technology

[0002] In the pharmaceutical, chemical, and food industries, fluidized bed dryers are widely used for drying powdery and granular materials due to their high drying efficiency and uniform heating. Their working principle involves using a bottom-up hot airflow to cause the material to boil within the drying chamber, achieving efficient heat and mass transfer. The equipment mainly consists of an air inlet system, a drying chamber, a gas distribution plate, a heating system, and a discharge unit, with the discharge unit responsible for discharging the material after drying.

[0003] Currently, material discharge is mostly achieved through gravity or pneumatic conveying, requiring operation via a bottom discharge port in conjunction with valves or rotary unloaders. However, in actual operation, to maintain the boiling state and temperature stability of the material during the drying process, heated gas needs to be continuously introduced into the drying chamber to create a positive pressure or dynamic equilibrium environment. When the drying process ends and material discharge is required, maintaining a continuous gas supply would cause material splashing and dust dispersion, affecting not only the smoothness of discharge but also potentially causing environmental pollution and material loss. Therefore, existing technologies generally adopt an operating procedure of stopping heating, shutting off the air inlet system, and waiting for the internal airflow to stabilize or depressurize before opening the discharge device.

[0004] While this "stop-and-discharge" mode ensures the safety and controllability of the discharge process, it inevitably introduces non-productive time, leading to a decrease in equipment utilization and an extension of the overall drying cycle. This is especially true in large-scale, continuous production scenarios, where it significantly restricts the improvement of production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a discharge unit for a fluidized bed dryer that can achieve safe, efficient, and continuous discharge while maintaining dynamic balance of hot gas, thereby effectively improving production efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides a discharge unit for a fluidized bed dryer, including a discharge cylinder installed at the discharge port of the fluidized bed dryer. A rotating hole is opened in the middle of one end of the discharge cylinder, and an inlet is opened at the edge of one end of the rotating hole. A rotating shaft is rotatably connected inside the discharge cylinder and rotatably connected to the rotating hole. A drive motor is installed at the end of the discharge cylinder away from the rotating hole. The power output shaft of the drive motor is connected to one end of the rotating shaft. Multiple circumferentially distributed baffles are arranged on the outer circumference of the rotating shaft inside the discharge cylinder. The free edge of each baffle contacts the inner wall of the discharge cylinder. An outlet is opened on the side wall of the discharge cylinder near the drive motor. The outlet and the inlet are staggered, and the number of baffles ensures that the outlet and the inlet are never connected.

[0007] By adopting the above technical solution, the discharge unit is installed at the discharge port of the fluidized bed dryer. After the drive motor starts, its power output shaft drives the rotating shaft to rotate, and the spiral guide rod installed on it rotates accordingly, guiding the material to the inlet of the discharge cylinder and gradually entering the discharge cylinder. At the same time, the baffles set on the outer circumference of the rotating shaft rotate inside the discharge cylinder. Due to the ingenious design of the number and position of the baffles, it is ensured that the discharge port and the inlet are never connected. The rotating baffles push the material entering the discharge cylinder from the inlet to the discharge port, and gradually discharge it from the discharge port under the action of gravity. During the process, since the discharge port and the inlet are never connected, the hot air in the fluidized bed dryer will not be discharged from the discharge port, realizing continuous material discharge without stopping the machine.

[0008] The present invention is further configured such that an installation ring for connecting to a fluidized bed dryer is provided on the edge of one end of the discharge cylinder at the rotating hole, and the installation ring has a plurality of circumferentially distributed installation holes.

[0009] The present invention is further provided with a reinforcing rotating tube that is rotatably connected to the rotating shaft outward from the rotating hole.

[0010] The present invention is further configured such that the rotating shaft passes through the reinforced rotating tube and extends into the fluidized bed dryer, and is connected to a spiral guide rod.

[0011] The present invention is further configured such that the discharge port is provided with a discharge channel facing outward.

[0012] The present invention is further provided that the edge of the discharge cylinder away from the rotating hole is provided with a protective cover for the drive motor, and the protective cover has multiple heat dissipation holes on the side away from the discharge port.

[0013] The present invention is further configured such that the discharge port and the inlet port are distributed opposite to each other.

[0014] Compared with existing technologies, this utility model, through its cleverly designed baffle and rotating shaft structure, ensures that the discharge port and the inlet port are never connected at any time, thereby achieving continuous material discharge without stopping the machine. This avoids the non-productive time caused by the traditional "stop-discharge" mode, effectively improving production efficiency. At the same time, the hot air inside the fluidized bed dryer will not be discharged from the discharge port, ensuring the stability of the dynamic balance of hot air in the drying chamber, avoiding problems such as material splashing and dust flying, and improving the safety and controllability of the discharge process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 Primarily used to display the drive motor inside the protective cover;

[0017] Figure 3 Used to demonstrate the connection between the spiral guide rod and the rotating shaft.

[0018] The components include: 1. discharge cylinder; 2. mounting ring; 3. mounting hole; 4. reinforced rotating tube; 5. feed inlet; 6. rotating shaft; 7. drive motor; 8. spiral guide rod; 9. baffle; 10. discharge port; 11. discharge channel; 12. protective cover; and 13. heat dissipation hole. Detailed Implementation

[0019] The discharge unit of a fluidized bed dryer according to this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0020] Example, refer to Figure 1-3 A discharge unit of a fluidized bed dryer includes a discharge cylinder 1 installed at the discharge port 10 of the fluidized bed dryer. An installation ring 2 connected to the fluidized bed dryer is provided outward from one end edge of the discharge cylinder 1. The installation ring 2 has a plurality of circumferentially distributed installation holes 3. A rotating hole is provided in the middle of one end of the installation ring 2. A reinforcing rotating tube 4 is provided outward from the rotating hole. A long fan-shaped inlet 5 is provided at one end of the rotating hole.

[0021] A rotating shaft 6, rotatably connected to a rotating hole, is rotatably connected inside the discharge cylinder 1. A drive motor 7 is installed at the end of the discharge cylinder 1 away from the rotating hole. The power output shaft of the drive motor 7 is connected to one end of the rotating shaft 6. The rotating shaft 6 passes through the reinforcing rotating tube 4 and extends into the fluidized bed dryer, where it is connected to a spiral guide rod 8 to increase the tendency of the material to be guided towards the inlet 5. Multiple circumferentially distributed baffles 9 are arranged on the outer periphery of the rotating shaft 6 inside the discharge cylinder 1. The free edge of each baffle 9 contacts the inner wall of the discharge cylinder 1. A discharge port 10 is opened on the side wall of the discharge cylinder 1 near the drive motor 7. The discharge port 10 is staggered from the inlet 5, and the number of baffles 9 ensures that the discharge port 10 and the inlet 5 are never connected. A discharge channel 11 is provided outward from the discharge port 10. A protective cover 12, covering the drive motor 7, is provided on the edge of the discharge cylinder 1 away from the rotating hole. Multiple heat dissipation holes 13 are opened on the side of the protective cover 12 away from the discharge port 10.

[0022] Its working principle is as follows: The discharge unit is installed at the discharge port 10 of the fluidized bed dryer. After the drive motor 7 starts, its power output shaft drives the rotating shaft 6 to rotate, and the spiral guide rod 8 set on it rotates accordingly, guiding the material to the inlet 5 of the discharge cylinder 1 and gradually entering the discharge cylinder 1. At the same time, the baffles 9 set on the outer periphery of the rotating shaft 6 rotate inside the discharge cylinder 1. Due to the ingenious design of the number and position of the baffles 9, it is ensured that the discharge port 10 and the inlet 5 are never connected. The rotating baffles 9 push the material entering the discharge cylinder 1 from the inlet 5 to the discharge port 10, and gradually discharge it from the discharge port 10 under the action of gravity. During the process, since the discharge port 10 and the inlet 5 are never connected, the hot air in the fluidized bed dryer will not be discharged from the discharge port 10, realizing continuous material discharge without stopping the machine.

[0023] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0024] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A discharge unit for a fluidized bed dryer, comprising a discharge cylinder (1) installed at the discharge port (10) of the fluidized bed dryer, characterized in that, A rotating hole is provided in the middle of one end of the discharge cylinder (1). An inlet (5) is provided at the end of the discharge cylinder (1) where the rotating hole is located and at the edge of the rotating hole. A rotating shaft (6) is rotatably connected inside the discharge cylinder (1) and rotatably connected to the rotating hole. A drive motor (7) is installed at the end of the discharge cylinder (1) away from the rotating hole. The power output shaft of the drive motor (7) is connected to one end of the rotating shaft (6). Multiple baffles (9) are arranged in a circular pattern on the outer periphery of the rotating shaft (6) inside the discharge cylinder (1). The free edge of each baffle (9) is in contact with the inner wall of the discharge cylinder (1). A discharge port (10) is provided on the side wall of the discharge cylinder (1) near the drive motor (7). The discharge port (10) is staggered from the inlet (5), and the number of baffles (9) ensures that the discharge port (10) and the inlet (5) are never connected.

2. The discharge unit of a fluidized bed dryer according to claim 1, characterized in that, The discharge cylinder (1) has an installation ring (2) connected to the boiling dryer on the edge of one end of the rotating hole. The installation ring (2) has multiple installation holes (3) distributed in a circular pattern.

3. The discharge unit of a fluidized bed dryer according to claim 1, characterized in that, The rotating hole is provided with a reinforced rotating tube (4) that is rotatably connected to the rotating shaft (6).

4. The discharge unit of a fluidized bed dryer according to claim 3, characterized in that, The rotating shaft (6) passes through the reinforced rotating tube (4) and extends into the fluidized bed dryer, where it is connected to a spiral guide rod (8).

5. The discharge unit of a fluidized bed dryer according to claim 1, characterized in that, The discharge port (10) is provided with a discharge channel (11) to the outside.

6. The discharge unit of a fluidized bed dryer according to claim 1, characterized in that, The discharge cylinder (1) is provided with a protective cover (12) for the drive motor (7) on the edge away from the rotating hole. The protective cover (12) has multiple heat dissipation holes (13) on the side away from the discharge port (10).

7. The discharge unit of a fluidized bed dryer according to claim 1, characterized in that, The discharge port (10) is distributed opposite to the inlet port (5).

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