Fluidized bed

Abstract

The fluidized bed comprises a reverse blowing component, a pressing plate assembly, a mounting disc, a base plate and a filter bag, a first mounting surface is arranged on the mounting disc, a plurality of through holes are formed in the first mounting surface, the filter bag comprises a bag body part and a bag opening part, the base plate is arranged on the first mounting surface on the outer ring of the through holes, and the filter bag is arranged on the base plate. The top surface of the base plate is a second mounting surface, the bag opening part is mounted on the second mounting surface, the bag body part downwards penetrates through the through hole, a mounting column is further arranged on the first mounting surface, and a mounting hole matched with the mounting column is formed in the pressing plate assembly, so that the pressing plate assembly is pressed on the bag opening part, and the pressing plate assembly and the second mounting surface are kept sealed; and the reverse blowing part is mounted above the pressing plate assembly. The utility model aims to improve the sealing and back-blowing structure of the filter disc of the fluidized bed.

Description

Technical Field

[0001] This utility model belongs to the field of fluidized beds, and more specifically, relates to a fluidized bed. Background Technology

[0002] In various industries such as pharmaceuticals, chemicals, and food processing, fluidized bed filter disc assemblies are core components of this technology, and their performance directly affects the efficiency and product quality of the entire production line. However, currently widely used fluidized bed filter disc assemblies face a series of challenges in design and practical application, particularly in terms of sealing, backflushing cleaning efficiency, and installation stability. In existing fluidized bed filter disc assemblies, the sealing design between the filter bag and the filter disc mounting surface is often inadequate, leading to powder and gas leaks during production. This sealing failure not only reduces product purity and yield but also increases the risk of environmental pollution and poses a potential threat to operator health. Simultaneously, gas leakage directly affects the pressure transmission of the backflushing cleaning system, making it difficult to effectively remove powder from the filter bags, further exacerbating filter bag clogging and wear. Due to insufficient backflushing pressure caused by poor sealing, existing systems struggle to achieve ideal cleaning results during backflushing. Powder accumulates on the filter bag surface, forming a difficult-to-remove adhesion layer, which not only reduces filtration efficiency but also shortens the filter bag's lifespan. In addition, the uneven installation gap between the backflushing assembly and the pressure plate results in uneven distribution of backflushing airflow, which further weakens the dust removal effect, leading to frequent powder adhesion and blockage of filter bags, unbalanced fluidization effect, and a significant reduction in granulation rate. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] Based on this, the present invention provides a fluidized bed, the purpose of which is to improve the structure of the fluidized bed filter disc sealing backflushing structure.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, this utility model proposes a fluidized bed, including a backflush component, a pressure plate assembly, a mounting plate, a pad, and a filter bag. The mounting plate has a first mounting surface with multiple through holes. The filter bag includes a bag body and a bag opening. The pad is disposed on the first mounting surface around the through holes, and the top surface of the pad is a second mounting surface. The bag opening is mounted on the second mounting surface, and the bag body passes downward through the through holes. The first mounting surface also has a mounting post. The pressure plate assembly has mounting holes that match the mounting posts, so that the pressure plate assembly presses against the bag opening to maintain a seal with the second mounting surface. The backflush component is mounted above the pressure plate assembly.

[0007] Furthermore, the second mounting surface is a flat surface formed by a planar machining process.

[0008] Furthermore, the mounting post has a third mounting surface, and the mounting hole has a fourth mounting surface. The third mounting surface and the fourth mounting surface come into contact with each other when the mounting post and the mounting hole are installed together. The third mounting surface and the fourth mounting surface are flat surfaces formed by a planar machining process.

[0009] Furthermore, the planar machining process involves using a gantry milling machine for planar machining.

[0010] Furthermore, the pad is welded and fixed to the first mounting surface using laser welding technology.

[0011] Furthermore, the pressure plate assembly is provided with back-blowing ports, and the number and position of the back-blowing ports and through holes correspond one-to-one.

[0012] Furthermore, the pressure plate assembly includes a main body and a filter frame, the filter frame is fixed below the main body, the mounting hole is provided on the main body, and the filter frame extends downward with an extension plate that extends into the bag opening.

[0013] Furthermore, the backflush port includes a first backflush port on the main body and a second backflush port on the filter frame.

[0014] Furthermore, the pressure plate assembly also includes a support plate disposed in the filter bag, the upper end of the support plate being fixed to the extension plate.

[0015] Furthermore, the mounting plate has a rotating shaft in the middle, and the through holes are arranged in a circular array with the rotating shaft as the center. The rotating shaft passes upward through the pressure plate assembly, and the backflush component is rotatably mounted on the rotating shaft.

[0016] (III) Beneficial Effects

[0017] Compared with existing technologies, the fluidized bed of this invention has the following advantages:

[0018] This invention designs a fluidized bed by adding a pad to increase the thickness and structural strength of the first mounting surface of the mounting plate. This allows the filter bag to remain sealed with the second mounting surface of the pad under the pressure of the pressure plate assembly, improving the backflushing effect, preventing air and powder leakage, saving powder, and increasing the granulation rate. Attached Figure Description

[0019] The features and advantages of this utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the utility model in any way. In the drawings:

[0020] Figure 1This is an exploded view of the fluidized bed used in this application.

[0021] Figure 2 This is a cross-sectional view of the fluidized bed under exploded conditions.

[0022] Figure 3 This is a cross-sectional view of the fluidized bed from another angle.

[0023] The reference numerals in the attached figures are:

[0024] 1. Backflush component; 2. Pressure plate assembly; 21. Main body; 211. First backflush port; 212. Mounting hole; 22. Filter frame; 221. Second backflush port; 222. Extension plate; 223. Support plate; 3. Mounting plate; 31. Mounting column; 32. Rotating shaft; 4. Pad; 41. Second mounting surface; 5. Filter bag; 51. Bag opening; 52. Bag body. 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 are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] This utility model discloses a fluidized bed, such as Figures 1 to 3 As shown, the assembly includes a backflush component 1, a pressure plate assembly 2, a mounting plate 3, a pad 4, and a filter bag 5. The mounting plate 3 has a first mounting surface with multiple through holes. The filter bag 5 includes a bag body 52 and a bag opening 51. The pad 4 is disposed on the first mounting surface around the through holes, and the top surface of the pad 4 is a second mounting surface 41. The bag opening 51 is mounted on the second mounting surface 41, and the bag body 52 passes downward through the through holes. The first mounting surface also has a mounting post 31. The pressure plate assembly 2 has mounting holes 212 that match the mounting posts 31, so that the pressure plate assembly 2 presses against the bag opening 51 to keep it sealed with the second mounting surface 41. The backflush component 1 is mounted above the pressure plate assembly 2.

[0027] In a preferred embodiment, the second mounting surface 41 is a plane formed by a plane machining process.

[0028] In a preferred embodiment, the mounting post 31 has a third mounting surface, and the mounting hole 212 has a fourth mounting surface. The third and fourth mounting surfaces abut against each other when the mounting post 31 and the mounting hole 212 are installed together. The third and fourth mounting surfaces are flat surfaces formed by a planar machining process. Specifically, the mounting post 31 is a post with screw holes inside, and screws pass through the mounting hole 212 and connect to the screw holes of the mounting post 31.

[0029] In a preferred embodiment, the planar machining process is to perform planar machining using a gantry milling machine.

[0030] In a preferred embodiment, the pad 4 is welded and fixed to the first mounting surface using laser welding. Preferably, the pad 4 is first fixed to the first mounting surface by welding, and then the second mounting surface 41 on the pad 4 is machined by a gantry milling machine to ensure the flatness of the second mounting surface 41.

[0031] In a more preferred embodiment, such as Figure 1 As shown, the pressure plate assembly 2 is provided with back-blowing ports, and the number and position of the back-blowing ports and through holes correspond one-to-one.

[0032] In a more preferred embodiment, such as Figure 1 and Figure 2 As shown, the pressure plate assembly 2 includes a main body 21 and a filter frame 22. The filter frame 22 is fixed below the main body 21. The mounting hole 212 is provided on the main body 21. The filter frame 22 extends downward with an extension plate 222, which extends into the bag opening 51.

[0033] In a more preferred embodiment, such as Figure 1 As shown, the backflush port includes a first backflush port 211 on the main body 21 and a second backflush port 221 on the filter frame 22.

[0034] In a more preferred embodiment, such as Figure 3 As shown, the pressure plate assembly 2 also includes a support plate 223, which is disposed in the filter bag 5. The upper end of the support plate 223 is fixed on the extension plate 222, and the filter bag 5 is opened by the support plate 223.

[0035] In a more preferred embodiment, such as Figure 1 and Figure 2 As shown, the mounting plate 3 has a rotating shaft 32 in the middle, and the through holes are arranged in a ring array with the rotating shaft 32 as the center. The rotating shaft 32 passes upward through the pressure plate assembly 2, and the backflush component 1 is rotatably mounted on the rotating shaft 32.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "front," "rear," "left," "right," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; and they can refer to a "transmission connection," that is, a power connection through various suitable methods such as belt drive, gear drive, or sprocket drive. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A fluidized bed, characterized in that, The system includes a backflush component (1), a pressure plate assembly (2), a mounting plate (3), a pad (4), and a filter bag (5). The mounting plate (3) has a first mounting surface with multiple through holes. The filter bag (5) includes a bag body (52) and a bag opening (51). The pad (4) is placed on the first mounting surface around the through holes. The top surface of the pad (4) is a second mounting surface (41). The bag opening (51) is mounted on the second mounting surface (41). The bag body (52) passes downward through the through holes. The first mounting surface also has a mounting post (31). The pressure plate assembly (2) has mounting holes (212) that match the mounting post (31), so that the pressure plate assembly (2) presses on the bag opening (51) to keep it sealed with the second mounting surface (41). The backflush component (1) is mounted above the pressure plate assembly (2).

2. The fluidized bed according to claim 1, characterized in that, The second mounting surface (41) is a plane formed by a plane machining process.

3. The fluidized bed according to claim 1, characterized in that, The mounting post (31) has a third mounting surface, and the mounting hole (212) has a fourth mounting surface. The third mounting surface and the fourth mounting surface abut against each other when the mounting post (31) and the mounting hole (212) are installed together. The third mounting surface and the fourth mounting surface are flat surfaces formed by a planar machining process.

4. The fluidized bed according to claim 2 or 3, characterized in that, The planar machining process involves using a gantry milling machine for planar machining.

5. The fluidized bed according to claim 1, characterized in that, The pad (4) is welded and fixed to the first mounting surface using laser welding technology.

6. The fluidized bed according to claim 1, characterized in that, The pressure plate assembly (2) is provided with back-blowing ports, and the number and position of the back-blowing ports and through holes correspond one-to-one.

7. The fluidized bed according to claim 6, characterized in that, The pressure plate assembly (2) includes a main body (21) and a filter frame (22). The filter frame (22) is fixed below the main body (21). The mounting hole (212) is provided on the main body (21). The filter frame (22) has an extension plate (222) extending downward, and the extension plate (222) extends into the bag opening (51).

8. The fluidized bed according to claim 7, characterized in that, The backflush port includes a first backflush port (211) on the main body (21) and a second backflush port (221) on the filter frame (22).

9. The fluidized bed according to claim 7, characterized in that, The pressure plate assembly (2) also includes a support plate (223), which is disposed in the filter bag (5) and the upper end of the support plate (223) is fixed on the extension plate (222).

10. The fluidized bed according to claim 1, characterized in that, The mounting plate (3) is provided with a rotating shaft (32) in the middle. The through holes are arranged in a ring array with the rotating shaft (32) as the center. The rotating shaft (32) passes upward through the pressure plate assembly (2). The backflush component (1) is rotatably mounted on the rotating shaft (32).

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