A fluidized bed granulation apparatus

Abstract

This utility model relates to the technical field of fluidized bed granulation devices, and more particularly to a fluidized bed granulation device, which includes a granulation cylinder. A filtration and collection mechanism and a driving mechanism are sequentially arranged on the upper side of the granulation cylinder. The filtration and collection mechanism includes a mounting ring seat and a top plate. An upper ring seat is screwed onto the upper side of the mounting ring seat. A dust collection bag is fixedly installed between the upper ring seat and the top plate. Several sets of first stainless steel springs are arranged on the outside of the dust collection bag. The first stainless steel springs are fixedly installed between the upper ring seat and the top plate. Side support rods are fixedly connected to the side walls of the first stainless steel springs. A counterweight is fixedly installed at the end of the side support rod. An abutment post is fixedly installed on the upper side of the top plate. In this utility model, the hot air flow direction is arranged from bottom to top, which facilitates uniform heating of the material accumulated at the bottom. The filtration and collection mechanism can capture and shake off suspended dust in the granulation cylinder to the bottom of the granulation cylinder, avoiding waste.

Description

Technical Field

[0001] This utility model relates to the technical field of fluidized bed granulation devices, and in particular to a fluidized bed granulation device. Background Technology

[0002] A fluidized bed granulator uses clean hot air to boil materials in a sealed container from the bottom, creating a fluidized state. The materials then move up and down irregularly and in a complex manner within the container, mixing and achieving a uniform state. Finally, they are dried with hot air to form granules.

[0003] Reference to the utility model patent with authorization announcement number CN211800649U, a pharmaceutical boiling granulation device is disclosed, including a box body, a braking device, and a spraying device. The spraying device is installed inside the box body, and an air outlet is provided at the top of one side of the box body. An air guide pipe is provided on the air outlet and connected to the braking device. The braking device works in conjunction with the spraying device to reuse hot air and drive the spray head to rotate through a transmission gear, reducing the use of a motor and reducing energy consumption. The rotation of the spray head and the inverted V-shaped structure make the atomized binder sprayed more evenly and comprehensively, thus ensuring the uniformity of material granulation and preventing collapse and clumping during material formation. At the same time, the rotation of the spray head causes the material adhering to the spray head to fall off, preventing the material with binder adhering to the spray head during the rising process and affecting the spraying effect of the binder, thus making the granulation efficiency higher.

[0004] The filter bags in the above-mentioned patent are distributed in a relatively dispersed manner, which is not very efficient at capturing dust floating in the internal air and is prone to material waste. At the same time, the outlet is located on the lower side of the box, which has a negative effect on the dust capture and filtration work of the filter bags, making it not very practical. In order to solve the drawbacks of the above-mentioned technology, we propose a fluidized bed granulation device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fluidized bed granulation device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fluidized bed granulation apparatus includes a granulation cylinder, on the upper side of which a filtration and collection mechanism and a driving mechanism are sequentially arranged. The filtration and collection mechanism includes a mounting ring seat and a top plate. An upper ring seat is screwed onto the upper side of the mounting ring seat. A dust collection bag is fixedly installed between the upper ring seat and the top plate. Several sets of first stainless steel springs are arranged on the outer side of the dust collection bag. The first stainless steel springs are fixedly installed between the upper ring seat and the top plate. A side support rod is fixedly connected to the side wall of the first stainless steel spring. A counterweight is fixedly installed at the end of the side support rod. An abutment post is fixedly installed on the upper side of the top plate.

[0008] Furthermore, the driving mechanism includes an upper cylinder, and the upper cylinder and the upper ring seat are bolted together and installed on the upper side of the granulation cylinder. An exhaust pipe is installed on the side wall of the upper cylinder.

[0009] By adopting the above technical solution, the exhaust pipe is used to provide a flow channel for the hot air injected into the hot air pipe, so that the hot air eventually flows out to the upper side.

[0010] Furthermore, a slide cylinder is fixedly installed on the upper side of the upper cylinder, a slide rod is slidably inserted into the inner side of the slide cylinder, a plurality of ear plates are fixedly installed on the upper side of the slide rod, a second stainless steel spring is fixedly connected between the ear plates and the upper side of the upper cylinder, and a roller is rotatably installed on the upper end of the slide rod.

[0011] Furthermore, a sealing ring is provided at the sliding connection between the slide cylinder and the slide rod.

[0012] By adopting the above technical solution, the sealing ring ensures the sliding seal between the slide cylinder and the slide rod.

[0013] Furthermore, a vertical plate is fixedly installed on the upper side of the upper cylinder, a second motor is fixedly installed on the side of the vertical plate, a cam is fixedly installed on the output end of the second motor, and the lower side of the cam abuts against the roller.

[0014] Furthermore, the slide rod slides through to the inside of the upper cylinder and the lower end of the slide rod abuts against the upper side of the abutting post.

[0015] By adopting the above technical solution, the second motor drives the cam to rotate, and the cam and roller work together to drive the slide bar to move up and down. The abutment post that abuts against the lower end of the slide bar vibrates under the action of the slide bar's reciprocating motion.

[0016] Furthermore, a conical plate is fixedly installed at the bottom of the granulation cylinder.

[0017] Furthermore, a first motor is fixedly installed at the bottom of the conical plate, and a rotating shaft is fixedly installed on the output end of the first motor. The rotating shaft rotates through to the upper side of the conical plate, and several stirring rods are fixedly installed on the outer wall of the rotating shaft.

[0018] By adopting the above technical solution, the first motor drives the rotating shaft to rotate, which in turn drives the stirring rod to rotate at the bottom of the cone plate, stirring the material, making the material mix evenly, and accelerating the granulation process.

[0019] Furthermore, an auxiliary stirring blade is fixedly installed on the upper side of the stirring rod.

[0020] Furthermore, a controller is fixedly installed on the outer wall of the granulation cylinder, and a conveying pipe, a discharge pipe, and a hot air pipe are fixedly connected to both sides of the granulation cylinder, respectively. Solenoid valves are installed on the conveying pipe, the discharge pipe, and the hot air pipe, and the inner ends of the hot air pipe and the discharge pipe are located at the lowest point of the conical plate.

[0021] By adopting the above technical solution, the air in the hot air pipe flows upward from the bottom of the material accumulation layer, which makes the hot air contact with the material more fully and avoids uneven heating of the material at the bottom. The inner end of the discharge pipe is located at the lowest point of the cone plate, which facilitates the discharge of subsequent granular materials.

[0022] Compared with related technologies, the fluidized bed granulation device proposed in this utility model has the following beneficial effects:

[0023] In this utility model, the fluidized bed granulation device features a filter and collection mechanism. The hot air flow direction is from bottom to top, facilitating uniform heating of the material accumulated at the bottom. Furthermore, the airflow path passes through the filter and collection mechanism, ensuring that suspended materials in the granulation cylinder are filtered by the dust collection bag during exhaust, causing dust to adhere to the bag and preventing material waste. The drive assembly provides vibration to the upper side of the filter and collection mechanism. Several sets of first stainless steel springs are evenly distributed on the outside of the dust collection bag to further enhance the vibration. Several sets of side support rods and counterweights are connected to the first stainless steel springs, strengthening their vibration inertia and further increasing the shaking effect of the dust collection bag under vibration. This facilitates the dislodging of dust adhering to the dust collection bag to the bottom of the granulation cylinder, enhancing practicality. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a fluidized bed granulation device proposed in this utility model;

[0025] Figure 2 This is a three-dimensional disassembly diagram of a fluidized bed granulation device proposed in this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the drive mechanism;

[0027] Figure 4 Schematic diagram of the three-dimensional structure of the filter collection mechanism Figure 1 ;

[0028] Figure 5 Schematic diagram of the three-dimensional structure of the filter collection mechanism Figure 2 ;

[0029] Figure 6 This is a schematic diagram of the internal structure of the cone-shaped plate.

[0030] In the diagram: 1. Granulation cylinder; 2. Feeding pipe; 3. Discharge pipe; 4. Controller; 5. First motor; 6. Filtering and collecting mechanism; 61. Mounting ring seat; 62. Upper ring seat; 63. Top plate; 64. Dust collection bag; 65. First stainless steel spring; 66. Side support rod; 67. Counterweight; 68. Abutment column; 7. Drive mechanism; 71. Upper cylinder; 72. Exhaust pipe; 73. Slide cylinder; 74. Slide rod; 75. Ear plate; 76. Second stainless steel spring; 77. Roller; 78. Vertical plate; 79. Second motor; 710. Cam; 8. Conical plate; 9. Rotating shaft; 10. Stirring rod; 11. Auxiliary stirring plate; 12. Hot air pipe. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-6 A fluidized bed granulation apparatus includes a granulation cylinder 1. A filtration and collection mechanism 6 and a drive mechanism 7 are sequentially arranged on the upper side of the granulation cylinder 1. The filtration and collection mechanism 6 includes a mounting ring seat 61 and a top plate 63. An upper ring seat 62 is screwed onto the upper side of the mounting ring seat 61. A dust collection bag 64 is fixedly installed between the upper ring seat 62 and the top plate 63. Several sets of first stainless steel springs 65 are arranged on the outside of the dust collection bag 64. The first stainless steel springs 65 are fixedly installed between the upper ring seat 62 and the top plate 63. A side support rod 66 is fixedly connected to the side wall of the first stainless steel spring 65. A counterweight block 67 is fixedly installed at the end of the side support rod 66. An abutment post 68 is fixedly installed on the upper side of the top plate 63.

[0033] In this embodiment, the drive mechanism 7 includes an upper cylinder 71. The upper cylinder 71 and the upper ring seat 62 are bolted together and installed on the upper side of the granulation cylinder 1. An exhaust pipe 72 is installed on the side wall of the upper cylinder 71. A slide cylinder 73 is fixedly installed on the upper side of the upper cylinder 71. A slide rod 74 is slidably inserted into the inner side of the slide cylinder 73. Several ear plates 75 are fixedly installed on the upper side of the slide rod 74. A second stainless steel spring 76 is fixedly connected between the ear plates 75 and the upper side of the upper cylinder 71. A roller 77 is rotatably installed on the upper end of the slide rod 74. A vertical plate 78 is fixedly installed on the upper side of the upper cylinder 71. A second motor 79 is fixedly installed on the side of the vertical plate 78. A cam 710 is fixedly installed on the output end of the second motor 79. The lower side of the cam 710 abuts against the roller 77. The slide rod 74 slides through to the inner side of the upper cylinder 71 and the lower end of the slide rod 74 abuts against the upper side of the abutment post 68.

[0034] With the above structure, under the rebound force of the second stainless steel spring 76, the roller 77 on the upper side of the slide bar 74 is always in contact with the bottom of the cam 710. Thus, when the second motor 79 drives the cam 710 to rotate, it can drive the lower slide bar 74 to move up and down in a reciprocating motion.

[0035] In this embodiment, a sealing ring is provided at the sliding connection between the slide cylinder 73 and the slide rod 74.

[0036] The above structure ensures the sealing of the sliding connection between the slide cylinder 73 and the slide rod 74.

[0037] In this embodiment, a conical plate 8 is fixedly installed at the bottom of the granulation cylinder 1, a first motor 5 is fixedly installed at the bottom of the conical plate 8, a rotating shaft 9 is fixedly installed at the output end of the first motor 5, the rotating shaft 9 rotates through to the upper side of the conical plate 8, and several stirring rods 10 are fixedly installed on the outer wall of the rotating shaft 9.

[0038] With the above structure, when the first motor 5 starts, it can drive the stirring rod 10 to rotate at the bottom of the cone plate 8, which will break up the material accumulated at the bottom of the cone plate 8, prevent the material from clumping, and accelerate the granulation process. The cone plate 8 is designed with a high center and low sides, which facilitates the discharge of subsequent materials.

[0039] In this embodiment, an auxiliary stirring plate 11 is fixedly installed on the upper side of the stirring rod 10.

[0040] With the above structure and the setting of the auxiliary stirring plate 11, the stirring rod 10 is further enhanced to improve the stirring and crushing effect.

[0041] In this embodiment, a controller 4 is fixedly installed on the outer wall of the granulation cylinder 1. A conveying pipe 2, a discharge pipe 3, and a hot air pipe 12 are fixedly connected to both sides of the granulation cylinder 1. Solenoid valves are installed on the conveying pipe 2, the discharge pipe 3, and the hot air pipe 12. The inner ends of the hot air pipe 12 and the discharge pipe 3 are located at the lowest point of the cone plate 8.

[0042] Through the above structure, the air in the hot air pipe 12 flows upward from the bottom of the material accumulation layer, which, together with the stirring rod 10, makes the hot air more fully contacted with the material, avoids uneven heating of the material at the bottom, and the inner end of the discharge pipe 3 is located at the lowest point of the cone plate 8 to facilitate the discharge of subsequent granular materials.

[0043] In this utility model, during use:

[0044] I. Material Input and Initial Preparation

[0045] Material addition: The material to be granulated is injected into the granulation cylinder 1 through the feed pipe 2, and the material accumulates at the bottom of the cone plate 8. The solenoid valve on the feed pipe 2 is controlled by the controller 4 to ensure quantitative material input, and hot air is injected into the granulation cylinder 1 through the hot air pipe 12.

[0046] II. Material agitation and boiling fluidization

[0047] Stirring and dispersing: Start the first motor 5, and the rotating shaft 9 at its output end drives the stirring rod 10 and the auxiliary stirring plate 11 to rotate. The stirring rod 10 rotates at the bottom of the cone plate 8 to disperse the accumulated material and prevent clumping. At the same time, the auxiliary stirring plate 11 enhances the stirring effect and makes the material initially mixed evenly.

[0048] Hot air flow fluidization: Open the solenoid valve of hot air pipe 12, and hot air flows upward from the bottom of cone plate 8, passing through the material layer. The hot air heats the material and blows it into a fluidized state (i.e., the material floats up and down irregularly in the granulation cylinder 1), achieving uniform mixing and preliminary drying of the material.

[0049] III. Filtration, Collection, and Dust Recovery

[0050] Hot air and dust flow: Hot air carrying material dust flows upward from the bottom of the granulation cylinder 1, passes through the filter collection mechanism 6, and the dust collection bag 64 covers the upper side of the granulation cylinder 1. When the airflow passes through, the dust is intercepted by the dust collection bag 64 and adheres to its inner wall to avoid material waste.

[0051] Vibration cleaning of drive mechanism:

[0052] The second motor 79 is started, and the cam 710 at its output end rotates, pushing the roller 77 to drive the slide rod 74 to move up and down reciprocally. The lower end of the slide rod 74 abuts against the abutment post 68, thereby causing the top plate 63 to vibrate.

[0053] When the top plate 63 vibrates, the first stainless steel spring 65 connected to it elastically expands and contracts, and the side support rod 66 and counterweight 67 on its side wall enhance the vibration effect due to inertia, causing the dust collection bag 64 to vibrate at high frequency.

[0054] The shaking action dislodges the dust adhering to the dust collection bag 64, causing it to fall back to the bottom of the granulation cylinder 1 and rejoin the granulation process, thus improving material utilization.

[0055] Exhaust gas discharge: The filtered hot air is discharged through the exhaust pipe 72. The exhaust pipe 72 is located on the side wall of the upper cylinder 71 to ensure smooth airflow.

[0056] IV. Particle Collection and Discharge

[0057] Granulation complete: After the granules are dried to the predetermined requirements, the hot air pipe 12 and the first motor 5 are shut off, the material stops fluidizing and gradually falls.

[0058] Discharge operation: Open the solenoid valve of discharge pipe 3. Since the cone plate 8 has a structure that is high in the middle and low around the edges, the granular material is discharged from the lowest point of the cone plate 8 through the discharge pipe 3, which is convenient for collection.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fluid bed granulation apparatus characterized by, It includes a granulation cylinder (1), and a filter collection mechanism (6) and a drive mechanism (7) are sequentially arranged on the upper side of the granulation cylinder (1). The filter collection mechanism (6) includes a mounting ring seat (61) and a top plate (63). An upper ring seat (62) is screwed onto the upper side of the mounting ring seat (61). A dust collection bag (64) is fixedly installed between the upper ring seat (62) and the top plate (63). Several sets of first stainless steel springs (65) are provided on the outside of the dust collection bag (64). The first stainless steel springs (65) are fixedly installed between the upper ring seat (62) and the top plate (63). A side support rod (66) is fixedly connected to the side wall of the first stainless steel spring (65). A counterweight block (67) is fixedly installed at the end of the side support rod (66). An abutment post (68) is fixedly installed on the upper side of the top plate (63).

2. A fluid bed granulation apparatus according to claim 1, wherein The drive mechanism (7) includes an upper cylinder (71), and the upper cylinder (71) and the upper ring seat (62) are bolted together and installed on the upper side of the granulation cylinder (1). An exhaust pipe (72) is connected to the side wall of the upper cylinder (71).

3. A fluid bed granulation apparatus according to claim 2, wherein A slide cylinder (73) is fixedly installed on the upper side of the upper cylinder (71). A slide rod (74) is slidably inserted into the inner side of the slide cylinder (73). Several ear plates (75) are fixedly installed on the upper side of the slide rod (74). A second stainless steel spring (76) is fixedly connected between the ear plate (75) and the upper side of the upper cylinder (71). A roller (77) is rotatably installed on the upper end of the slide rod (74).

4. A fluid bed granulation apparatus according to claim 3, wherein A sealing ring is provided at the sliding connection between the slide cylinder (73) and the slide rod (74).

5. A fluid bed granulation apparatus according to claim 2, wherein A vertical plate (78) is fixedly installed on the upper side of the upper cylinder (71), and a second motor (79) is fixedly installed on the side of the vertical plate (78). A cam (710) is fixedly installed on the output end of the second motor (79), and the lower side of the cam (710) abuts against the roller (77).

6. A fluid bed granulation apparatus according to claim 3, wherein The slide rod (74) slides through to the inside of the upper cylinder (71) and the lower end of the slide rod (74) abuts against the upper side of the abutment post (68).

7. A fluid bed granulation apparatus according to claim 1 wherein, A conical plate (8) is fixedly installed at the bottom of the granulation cylinder (1).

8. A fluid bed granulation apparatus according to claim 7, wherein A first motor (5) is fixedly installed at the bottom of the cone plate (8), and a rotating shaft (9) is fixedly installed on the output end of the first motor (5). The rotating shaft (9) rotates through to the upper side of the cone plate (8), and several stirring rods (10) are fixedly installed on the outer wall of the rotating shaft (9).

9. A fluid bed granulation apparatus according to claim 8, wherein An auxiliary stirring plate (11) is fixedly installed on the upper side of the stirring rod (10).

10. A fluid bed granulation apparatus according to claim 1, wherein A controller (4) is fixedly installed on the outer wall of the granulation cylinder (1). A conveying pipe (2), a discharge pipe (3), and a hot air pipe (12) are fixedly connected to both sides of the granulation cylinder (1). Solenoid valves are installed on the conveying pipe (2), the discharge pipe (3), and the hot air pipe (12). The inner ends of the hot air pipe (12) and the discharge pipe (3) are located at the lowest point of the cone plate (8).

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