A fluidized bed drying granulator
By adopting a stepped airflow distribution plate and a perforated plate structure in the fluidized bed dryer, the problems of material accumulation at the bottom and fine powder escape at the top are solved, thereby improving particle size uniformity and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING HUAXING PHARMA EQUIP
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-26
AI Technical Summary
In existing fluidized bed dryer granulators, material tends to accumulate at the bottom, while fine powder at the top easily escapes, resulting in uneven particle size and affecting production efficiency and effectiveness.
It adopts a stepped airflow distribution plate and a perforated plate structure, which is divided into a primary fluidization zone and a secondary fluidization zone. The inclined perforated plate enhances the fluidization of large particles, while the fine perforated plate stabilizes the suspension of fine particles. Combined with temperature control components and sealing devices, fluidization uniformity is achieved.
It improves particle size uniformity, thereby increasing production efficiency and effectiveness.
Smart Images

Figure CN224405070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fluidized bed technology, and in particular to a fluidized bed drying and granulation machine. Background Technology
[0002] Fluidized bed refers to a fluidized bed in which a large number of solid particles are suspended in a moving fluid, so that the particles have certain apparent characteristics of the fluid. In fluidized bed drying granulation, the raw material is subjected to fluidized air in the drying chamber and is in a vulcanized state. Atomized binder solution is sprayed to make the raw material particles aggregate to form granules.
[0003] The existing technology includes a drying chamber, an air inlet, and an air distribution plate. An exhaust valve is installed on the top of the drying chamber. The upper part of the drying chamber is cylindrical and the lower part is conical. A feed inlet is installed on the lower side of the drying chamber. An atomizing nozzle is installed in the middle of the upper part of the drying chamber. An air concentrator is added to allow more fluidizing air to enter the air distribution plate, thereby improving the drying and granulation efficiency. A dust cap is added to prevent the raw material from clogging the air outlet of the cap and reducing the drying and granulation efficiency.
[0004] The existing technology also has the following drawbacks: when using traditional technology for fluidized bed drying and granulation, the material at the bottom tends to accumulate and the fine powder at the top tends to escape, resulting in uneven particle size. If this cannot be improved, it will lead to uneven fluidization, affecting the overall production efficiency and production effect. Utility Model Content
[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0006] In view of the problems existing in the current fluidized bed dryer and granulator, this utility model is proposed.
[0007] Therefore, the purpose of this utility model is to provide a fluidized bed drying granulator, which is suitable for solving the problem that when performing fluidized bed drying granulation using traditional technology, the material at the bottom tends to accumulate and the fine powder at the top tends to escape, resulting in uneven particle size. If this problem cannot be improved, it will lead to uneven fluidization, affecting the overall production efficiency and production effect.
[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fluidized bed drying granulator, comprising:
[0009] The main unit includes a fluidizing cylinder, and a handle is fixedly provided on the front of the fluidizing cylinder;
[0010] A granulation unit located inside the main unit includes a granulation section and an adjustment section located on its top surface. The granulation unit is used for drying and granulating materials.
[0011] A sealing unit is provided on the top surface of the main unit, which includes a rotating part and a sealing part located inside it. The sealing unit also includes a temperature control component. The sealing unit is used for sealing treatment of fluidized cylinder processing.
[0012] In a preferred embodiment of the fluidized bed drying granulator of this utility model, the granulation section includes a first motor fixedly connected to the bottom surface of the fluidizing cylinder. The top surface of the output rod of the first motor extends through the bottom surface of the fluidizing cylinder into the interior of the fluidizing cylinder and is fixedly connected to an inclined perforated plate. A conveying pump is fixedly installed on the right side of the fluidizing cylinder, and a conveying pipe is fixedly installed on the bottom surface of the conveying pump and the inner wall of the fluidizing cylinder.
[0013] In a preferred embodiment of the fluidized bed drying granulator described in this utility model, the adjusting unit includes a second motor fixedly connected to the inner wall of the fluidizing cylinder, and a turntable is fixedly provided on the top surface of the output rod of the second motor, with the side of the turntable in sealed contact with the inner wall of the fluidizing cylinder.
[0014] As a preferred embodiment of the fluidized bed drying granulator described in this utility model, the top surface of the turntable is uniformly and fixedly provided with three openings, and two screens are fixedly provided on the inner walls of two openings, with the two screens having different pore sizes.
[0015] In a preferred embodiment of the fluidized bed dryer granulator described in this utility model, the rotating part includes a handle rotatably connected to the inner wall of the fluidizing cylinder, a connecting plate is fixedly provided on the top surface of the handle, and the bottom surface of the connecting plate abuts against the top surface of the fluidizing cylinder.
[0016] In a preferred embodiment of the fluidized bed drying granulator described in this utility model, the sealing part includes a spring fixedly connected to the top surface of the connecting plate, a connecting rod fixedly disposed on the top surface of the spring, the side of the connecting rod slidingly connected to the inner wall of the connecting plate, a sealing plate fixedly disposed on the bottom surface of the connecting rod, and the side of the sealing plate slidingly contacting the inner wall of the fluidized bed.
[0017] In a preferred embodiment of the fluidized bed drying granulator described in this utility model, the temperature control component includes two temperature control rods fixedly connected to the inner walls of the upper and lower ends of the fluidized bed. A temperature control operating platform is fixedly provided on the front of the two temperature control rods, and the two temperature control rods are for zoned heating.
[0018] In a preferred embodiment of the fluidized bed drying granulator described in this utility model, two observation windows are fixedly provided on the inner walls of the upper and lower ends of the fluidizing cylinder, with the upper observation window being slightly larger than the lower observation window, and two adsorption plates are fixedly provided on the left side of the upper and lower ends of the fluidizing cylinder, respectively.
[0019] The beneficial effects of this utility model are as follows: By combining the granulation section and the adjustment section, the fluidized bed is divided into a primary fluidization zone and a secondary fluidization zone during fluidized bed drying and granulation. The fluidization intensity of different zones is controlled by a stepped airflow distribution plate. The bottom is an inclined perforated plate to enhance the fluidization of large particles, while the upper part is a fine perforated plate to stabilize the suspension of fine particles, which greatly improves the granulation effect and work efficiency. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0021] Figure 1 This is a schematic diagram of the overall structure of a fluidized bed dryer granulator proposed in this utility model;
[0022] Figure 2 This is a schematic diagram of the granulation unit structure of a fluidized bed dryer granulator proposed in this utility model;
[0023] Figure 3 This is a schematic diagram of the temperature control component structure of a fluidized bed dryer granulator proposed in this utility model.
[0024] Figure Descriptions: 100, Main Unit; 101, Fluidizing Cylinder; 102, Observation Window; 103, Handle; 104, Adsorption Plate; 200, Granulation Unit; 201, Granulation Section; 202, Adjustment Section; 201a, First Motor; 201b, Inclined Perforated Plate; 201c, Delivery Pump; 201d, Delivery Pipe; 202a, Second Motor; 202b, Turntable; 202c, Screen; 300, Sealing Unit; 301, Rotating Section; 302, Sealing Section; 301a, Rotary Handle; 301b, Connecting Plate; 302a, Connecting Rod; 302b, Spring; 302c, Sealing Plate; 303, Temperature Control Component; 3031, Temperature Control Operating Table; 3032, Temperature Control Rod. Detailed Implementation
[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0028] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0029] Example 1
[0030] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a fluidized bed dryer granulator, which can realize the effect of controlling the fluidization intensity of different areas by a stepped airflow distribution plate and improving the overall granulation efficiency. It includes a main body unit 100, a granulation unit 200 and a sealing unit 300.
[0031] The main unit 100 includes a fluidizing cylinder 101, and a handle 103 is fixedly provided on the front of the fluidizing cylinder 101;
[0032] The granulation unit 200, which is located inside the main body unit 100, includes a granulation section 201 and an adjustment section 202 located on its top surface. The granulation unit 200 is used for drying and granulating materials.
[0033] The sealing unit 300, which is provided on the top surface of the main unit 100, includes a rotating part 301 and a sealing part 302 located inside it. The sealing unit 300 also includes a temperature control component 303. The sealing unit 300 is used for sealing the fluidizing cylinder 101 during processing.
[0034] In use, the material is first poured into the fluidizing cylinder 101 through the opening at the top, and an adhesive is sprayed in. The rotating part 301 drives the sealing part 302 to seal the fluidizing cylinder 101. The adjusting part 202 is adjusted to a suitable screen size, and the drying and granulation operation is carried out quickly in conjunction with the granulation part 201 and the temperature control component 303.
[0035] Example 2
[0036] Reference Figure 2 and Figure 3 This is the second embodiment of the present invention. Unlike the previous embodiment, the granulation unit 201 includes a first motor 201a fixedly connected to the bottom surface of the fluidizing cylinder 101. The top surface of the output rod of the first motor 201a extends through the bottom surface of the fluidizing cylinder 101 into the interior of the fluidizing cylinder 101 and is fixedly connected to an inclined perforated plate 201b. A delivery pump 201c is fixedly installed on the right side of the fluidizing cylinder 101. A delivery pipe 201d is fixedly installed on the bottom surface of the delivery pump 201c and the inner wall of the fluidizing cylinder 101.
[0037] Specifically, the adjustment unit 202 includes a second motor 202a fixedly connected to the inner wall of the fluidizing cylinder 101. A turntable 202b is fixedly provided on the top surface of the output rod of the second motor 202a, and the side of the turntable 202b is in sealed contact with the inner wall of the fluidizing cylinder 101.
[0038] In addition, three openings are evenly fixed on the top surface of the turntable 202b, and two screens 202c are fixedly installed on the inner walls of two openings. The two screens 202c have different pore sizes.
[0039] In use, the material is first poured into the fluidizing cylinder 101 through the opening at the top, and adhesive is sprayed in. After the entire fluidizing cylinder 101 is sealed, the second motor 202a is started, which makes the turntable 202b rotate until the appropriate screen mesh 202c is reached. Then, the conveying pump 201c is started, which, together with the conveying pipe 201d, performs high-pressure gas conveying. The first motor 201a is started, which makes the inclined perforated plate 201b rotate. With the airflow, the material is suspended. At the same time, adhesive or hot air is sprayed in to make the powder agglomerate into granules.
[0040] The rotating part 301 includes a handle 301a rotatably connected to the inner wall of the fluidizing cylinder 101. A connecting plate 301b is fixedly provided on the top surface of the handle 301a, and the bottom surface of the connecting plate 301b abuts against the top surface of the fluidizing cylinder 101.
[0041] In addition, the sealing part 302 includes a spring 302b fixedly connected to the top surface of the connecting plate 301b. A connecting rod 302a is fixedly provided on the top surface of the spring 302b. The side of the connecting rod 302a is slidably connected to the inner wall of the connecting plate 301b. A sealing plate 302c is fixedly provided on the bottom surface of the connecting rod 302a. The side of the sealing plate 302c is in slidable contact with the inner wall of the fluidizing cylinder 101.
[0042] Specifically, the temperature control component 303 includes two temperature control rods 3032 fixedly connected to the inner walls of the upper and lower ends of the fluidizing cylinder 101. A temperature control operating platform 3031 is fixedly installed on the front of the two temperature control rods 3032. The two temperature control rods 3032 are for zoned heating. Two observation windows 102 are fixedly installed on the inner walls of the upper and lower ends of the fluidizing cylinder 101, respectively. The size of the upper observation window 102 is slightly larger than that of the lower observation window 102. Two adsorption plates 104 are fixedly installed on the left side of the upper and lower ends of the fluidizing cylinder 101, respectively.
[0043] During use, the temperature control panel 3031 is used for operation, which, together with the temperature control rod 3032, can control the heat of the upper and lower areas of the fluidizing cylinder 101. After fluidization drying and granulation, the connecting rod 302a is pulled upward, and the spring 302b is contracted, causing the sealing plate 302c to move out of the fluidizing cylinder 101. The handle 301a is turned, causing the connecting plate 301b to move the sealing plate 302c away, the adsorption plate 104 is removed, and the handle 103 is grasped to tilt the fluidizing cylinder 101 to remove the material.
[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A fluidized bed drying granulator, characterized in that, include: The main unit (100) includes a fluidizing cylinder (101), and a handle (103) is fixedly provided on the front side of the fluidizing cylinder (101); A granulation unit (200) is provided inside the main body unit (100), which includes a granulation section (201) and an adjustment section (202) located on its top surface. The granulation unit (200) is used for drying and granulating materials. A sealing unit (300) is provided on the top surface of the main unit (100), which includes a rotating part (301) and a sealing part (302) located inside it. The sealing unit (300) also includes a temperature control component (303). The sealing unit (300) is used for sealing the fluidizing cylinder (101) during processing.
2. The fluidized bed dryer and granulator according to claim 1, characterized in that: The granulation unit (201) includes a first motor (201a) fixedly connected to the bottom surface of the fluidizing cylinder (101). The top surface of the output rod of the first motor (201a) extends through the bottom surface of the fluidizing cylinder (101) into the interior of the fluidizing cylinder (101) and is fixedly connected to an inclined perforated plate (201b). A delivery pump (201c) is fixedly installed on the right side of the fluidizing cylinder (101). A delivery pipe (201d) is fixedly installed on the bottom surface of the delivery pump (201c) and the inner wall of the fluidizing cylinder (101).
3. The fluidized bed dryer and granulator according to claim 1, characterized in that: The adjustment unit (202) includes a second motor (202a) fixedly connected to the inner wall of the fluidizing cylinder (101). A turntable (202b) is fixedly installed on the top surface of the output rod of the second motor (202a). The side of the turntable (202b) is in sealed contact with the inner wall of the fluidizing cylinder (101).
4. The fluidized bed dryer and granulator according to claim 3, characterized in that: The turntable (202b) has three openings evenly fixed on its top surface, and two screens (202c) are fixedly installed on the inner walls of two of the openings. The two screens (202c) have different pore sizes.
5. The fluidized bed dryer and granulator according to claim 1, characterized in that: The rotating part (301) includes a handle (301a) rotatably connected to the inner wall of the fluidizing cylinder (101). A connecting plate (301b) is fixedly provided on the top surface of the handle (301a), and the bottom surface of the connecting plate (301b) abuts against the top surface of the fluidizing cylinder (101).
6. The fluidized bed dryer and granulator according to claim 5, characterized in that: The sealing part (302) includes a spring (302b) fixedly connected to the top surface of the connecting plate (301b). A connecting rod (302a) is fixedly provided on the top surface of the spring (302b). The side of the connecting rod (302a) is slidably connected to the inner wall of the connecting plate (301b). A sealing plate (302c) is fixedly provided on the bottom surface of the connecting rod (302a). The side of the sealing plate (302c) is in slidable contact with the inner wall of the fluidizing cylinder (101).
7. The fluidized bed dryer and granulator according to claim 1, characterized in that: The temperature control component (303) includes two temperature control rods (3032) fixedly connected to the inner walls of the upper and lower ends of the fluidizing cylinder (101). A temperature control operating table (3031) is fixedly provided on the front of the two temperature control rods (3032), and the two temperature control rods (3032) are for zoned heating.
8. The fluidized bed dryer and granulator according to claim 1, characterized in that: Two observation windows (102) are fixedly provided on the inner walls of the upper and lower ends of the fluidizing cylinder (101). The size of the upper observation window (102) is slightly larger than that of the lower observation window (102). Two adsorption plates (104) are fixedly provided on the left side of the upper and lower ends of the fluidizing cylinder (101).