Fluidized bed for preventing cross contamination

Abstract

The application relates to the technical field of fluidized bed drying equipment, and relates to a fluidized bed capable of preventing cross contamination, which comprises a machine body, a wind direction adjusting mechanism and a sealing mechanism, a feeding section and a working section are sequentially arranged below the machine body in a split mode, a movable base is arranged below the working section, an air inlet cavity is arranged in the movable base, an air distribution plate is arranged between the working section and the movable base, and an air inlet pipe is connected to the movable base; the fluidized bed container is divided into a machine body material shaking section, a feeding section and a bottom working section, so that the reaction materials adhered to the inner wall of the fluidized bed can be conveniently cleaned, cross contamination of the reaction materials which are difficult to remove to subsequent materials is avoided, the plurality of wind direction adjusting plates in the movable base are accurately adjusted through the mutual meshing transmission of the rack and the gear, the materials can be uniformly and fully rotated and fluidized, and energy is saved.

Description

Technical Field

[0001] This application relates to the field of fluidized bed drying equipment technology, and in particular to a fluidized bed that prevents cross-contamination. Background Technology

[0002] A fluidized bed is a reactor that uses gas or liquid to suspend solid particles in motion as they pass through a layer of granular solids, allowing gas-solid or liquid-solid phase reactions to occur. The particles exhibit certain fluid-like properties, and this state of fluid-solid contact is called solid fluidization. This type of bed is called a fluidized bed. Fluidized beds are mainly used for drying materials. Air is transported by a fan through the air inlet pipe on the fluidized bed to the reaction tower to cool the materials inside. Referring to Chinese patent application CN115364778B, a fluidized bed is disclosed, comprising an upper tube box, a reaction cylinder, a lower tube box, and a first heat exchange tube connected sequentially from top to bottom. At least one end of the first heat exchange tube passes through an upper tube sheet and is connected to the upper tube box. The reaction cylinder includes a jet fluidization section, a dense phase boiling fluidization section, and a dilute phase stabilizing fluidization section connected sequentially from bottom to top. The fluidized bed also includes a first copper tube sleeved on the first heat exchange tube and located in the dilute phase stabilizing fluidization section. This fluidized bed can significantly improve the reaction capacity of reactants in the dilute phase stabilizing fluidization section and improve the overall main reaction rate. However, the existing technology has the following problems: 1. After drying materials, large fluidized beds tend to have reactants adhering to their inner walls. There are inevitably dead corners on the inner walls, which are inconvenient for subsequent cleaning. The difficult-to-remove reactants may cross-contaminate subsequent materials, affecting the quality of the newly reacted materials. 2. The air intake in existing fluidized beds is usually controlled by valves through the air intake pipes. However, the air entering the fluidized bed tends to accumulate in one place, which is not conducive to the uniform and sufficient rotational fluidization of the material. As a result, the material needs a long fluidization reaction time to reach the expected degree of dryness, which is not conducive to the full utilization of energy.

[0003] To address this, we designed a fluidized bed that prevents cross-contamination. Summary of the Invention

[0004] The fluidized bed provided in this application embodiment can pull out the raw material container of the working section through the movable base at the bottom, and engage with the external fixed lifting and transfer machine to lift and discharge the granulated material, or use a vacuum feeder to draw the material to the granulator for granulation. At the same time, the fluidized bed can be disassembled and cleaned in sections, effectively controlling the technical problem of material cross-contamination.

[0005] This application provides a fluidized bed to prevent cross-contamination, including a body, with a feeding section and a working section sequentially arranged below the body. A movable base is located below the working section, and an air inlet chamber is provided within the movable base. An air distribution plate is provided between the working section and the movable base, and an air inlet pipe is connected to the movable base. An air direction adjustment mechanism is located within the air inlet chamber of the movable base, facilitating the even distribution of airflow from the movable base through the air distribution plate into the working section. A sealing mechanism is located at the connection points of the body, feeding section, and working section, sealing the connection between them and facilitating subsequent cleaning. The material in the working section is agitated and boiled into a fluidized state, while being mixed and dried simultaneously. During the fluidization process, the material is heated by exchanging heat with the airflow. During granulation, the liquid material is pumped into the spray gun by a peristaltic pump, atomized by compressed air, and then enters the nozzle through the pipeline. It is sprayed into the granulation chamber and atomized into fine droplets. The sprayed liquid mixes with the mother powder in the fluidized bed and adheres to form granules. At the same time, the granules are dried by hot air. The fine material powder rises under the action of strong airflow, and some of the fine powder rises to the filter bag in the shaking section and is captured. After a certain period of time, the left exhaust valve closes, and the filter bag in the left chamber shakes up and down under the action of the cylinder. The shaken-off powder falls back into the fluidized bed for granulation again. After shaking the bag, the left exhaust valve reopens. After a certain period of time, the right exhaust valve closes, and the filter bag in the right chamber of the filter chamber shakes. The left and right chambers shake alternately in this cycle, working continuously to clean the collected powder and keep the filter bags unobstructed, so as to efficiently complete the mixing, drying, and granulation operations. The air discharged from the dust removal chamber enters the secondary dust collector through the exhaust pipe, filters the fine powder again, and is then drawn out by the fan. After noise reduction treatment, it is discharged into the atmosphere. After the drying process is completed, the equipment stops, the seal is released, and the movable base is pulled out and engaged with the fixed lifting transfer machine to lift the granulated material for discharge, or the granulation material is drawn into the granulator by the vacuum feeder, effectively controlling dust and cross-contamination of products on site.

[0006] The technical solutions described in this application embodiment have at least the following technical effects: 1. In this application, the fluidized bed container is divided into a body shaking section, a feeding section and a bottom working section, which facilitates the cleaning of the reactants adhering to the inner wall of the fluidized bed and avoids cross-contamination of subsequent materials by the reactants that are difficult to remove, thereby ensuring the quality of the new reaction materials.

[0007] 2. In this application, the output end of the servo motor drives the turntable to rotate, so that as the rocker arm rotates with the turntable, the rocker arm pulls the four-bar linkage mechanism to drive a set of connecting rods and racks to move relative to each other on both sides of the turntable. Through the meshing transmission of the rack and gear, the multiple wind direction adjustment plates in the mobile base can be precisely adjusted. The wind direction adjustment plate located in the middle is kept in a vertical state, and the other wind direction adjustment plates are symmetrically arranged on both sides of the wind direction adjustment plate located in the middle, so as to facilitate the even distribution of the wind entering the mobile base.

[0008] In this embodiment, a first observation window is provided on the feeding section, a connector is fixedly connected to the side wall of the feeding section, a connecting column is fixedly connected to the connector, a lifting mechanism is provided on the side wall of the machine body, a pair of movable shafts are provided on the lifting mechanism, and the connecting column is rotatably connected to the pair of movable shafts.

[0009] In this embodiment, the wind direction adjustment mechanism includes: Multiple wind direction adjustment plates, each of which is fixedly connected to a rotating shaft, and the multiple wind direction adjustment plates are rotatably connected to a movable base through multiple rotating shafts; A set of racks; a mounting plate is provided on the side wall of the movable base; a set of fixed limiting members and a set of fixed shafts are provided on the mounting plate; the set of fixed shafts is arranged between the set of fixed limiting members; a limiting groove is provided on the fixed limiting member; and the rack is arranged in the limiting groove. Multiple gears are coaxially and fixedly connected to multiple rotating shafts, and a set of racks are symmetrically arranged below the multiple gears, and the racks mesh with the gears for transmission. A four-bar linkage mechanism, wherein the ends of the four-bar linkage mechanism are provided with connecting blocks, and each set of racks is provided with connecting rods below it. Each set of connecting rods is coaxially inserted into a set of fixed shaft platforms, and the connecting rods are fixedly connected to the connecting blocks. A drive mechanism is fixedly mounted on a mounting plate and is used to drive a set of racks to move relative to each other at both ends of a four-bar linkage.

[0010] In this embodiment, the driving mechanism includes: A servo motor and a turntable are provided, wherein the servo motor is fixedly mounted on a mounting plate, and the output end of the servo motor is coaxially and fixedly connected to the turntable; A rocker arm, one end of which is eccentrically mounted on the turntable, and the other end of which is rotatably connected to a four-bar linkage.

[0011] In this embodiment, the sealing mechanism includes: The first sealing assembly includes a first sealing bottom cover disposed at one end of the machine body near the feeding section and a first sealing top cover disposed at one end of the feeding section near the machine body. The first sealing top cover has a first sealing groove, and the first sealing bottom cover has a first sealing protrusion adapted to the first sealing groove. The second sealing assembly includes a second sealing bottom cover disposed at the end of the feeding section away from the machine body and a second sealing top cover disposed at the end of the working section away from the movable base; Multiple latches are respectively disposed on the first sealing assembly and the second sealing assembly.

[0012] In this embodiment, a set of mounting pipes is provided on the top of the machine body, a feeding pipe is connected to the feeding section, a material control valve is provided on the feeding pipe, a second observation window is provided on the side wall of the working section, and a control valve is provided on the air inlet pipe.

[0013] In this embodiment, the lifting mechanism includes: A set of fixed mounting cylinders, wherein the fixed mounting cylinders are provided with mounting cavities, a hydraulic cylinder is installed in the bottom of the mounting cavity, and a support pad is fixedly connected to the bottom of the fixed mounting cylinders; A set of lifting support columns, one end of which is fixedly connected to the side wall of the machine body, and the other end is slidably connected to the fixed mounting cylinder, and the output end of the hydraulic cylinder is fixedly connected to the lifting support column.

[0014] In this embodiment, a vertical cavity is provided on the lifting support column, and a drive motor is fixedly installed at the top of the cavity. A limit hole is provided on the side wall of the lifting support column corresponding to the position of the cavity. A set of movable shafts moves within the limit hole and the cavity. A screw is provided along the vertical direction of the cavity. The output end of the drive motor is coaxially fixedly connected to the screw. A threaded hole adapted to the screw thread is provided on the movable shaft.

[0015] In this embodiment, a protective frame is provided on the outside of the movable base, and multiple casters are provided on the bottom of the movable base. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a fluidized bed structure for preventing cross-contamination, provided in an embodiment of this application. Figure 2This application provides a schematic diagram of a fluidized bed machine designed to prevent cross-contamination, showing two isometric views. Figure 3 A front view of a fluidized bed designed to prevent cross-contamination, provided in an embodiment of this application; Figure 4 A schematic diagram illustrating the open cleaning state of a fluidized bed to prevent cross-contamination, provided as an embodiment of this application; Figure 5 A schematic diagram of the installation of a mobile base and air inlet regulating mechanism for a fluidized bed to prevent cross-contamination, provided in an embodiment of this application; Figure 6 for Figure 5 Enlarged schematic diagram of part A; Figure 7 This is a schematic diagram of the internal structure of a movable base for a fluidized bed designed to prevent cross-contamination, as provided in an embodiment of this application.

[0018] The following are the labeling elements in the figure: 1. Machine body; 11. First sealing bottom cover; 12. Mounting pipe; 2. Feeding section; 21. First sealing top cover; 22. First observation window; 23. Connecting piece; 24. Connecting column; 25. Feeding pipe; 251. Material control valve; 26. Second sealing bottom cover; 3. Working section; 31. Second sealing top cover; 32. Second observation window; 4. Moving base; 41. Air inlet pipe; 411. Control valve; 42. Air distribution plate; 5. Air direction adjustment plate; 51. Rotating shaft; 52. Mounting plate; 53. Fixed limit piece; 54. Gear; 55. Rack; 56. Fixed shaft platform; 57. Servo motor; 571. Turntable; 572. Four-bar linkage; 573. Connecting rod; 574. Rocker arm; 6. Lock; 7. Protective frame; 8. Casters; 9. Fixed mounting cylinder; 91. Lifting support column; 92. Moving shaft platform. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0025] It should be noted that in this application, the terms "in this embodiment," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "in this embodiment," "exemplarily," or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "in this embodiment," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above terms in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0026] A fluidized bed is a reactor that uses gas or liquid to suspend solid particles in motion by passing them through a layer of granular solids, allowing gas-solid or liquid-solid phase reactions to occur. The particles exhibit certain apparent properties similar to fluids, and this state of fluid-solid contact is called solid fluidization. This type of bed is called a fluidized bed. Fluidized beds are mainly used for drying materials. Air is transported by a fan through the air inlet pipe on the fluidized bed to the reaction tower to cool the materials inside.

[0027] A fluidized bed in the related technology comprises, from top to bottom, an upper tube box, a reaction cylinder, a lower tube box, and a first heat exchange tube. At least one end of the first heat exchange tube passes through an upper tube sheet and is connected to the upper tube box. The reaction cylinder includes, from bottom to top, a jet fluidization section, a dense phase boiling fluidization section, and a dilute phase stabilizing fluidization section. The fluidized bed also includes a first copper tube sleeved on the first heat exchange tube and located in the dilute phase stabilizing fluidization section. This fluidized bed can significantly improve the reaction capacity of reactants in the dilute phase stabilizing fluidization section and increase the overall main reaction rate.

[0028] Based on this, in order to improve the problems in related technologies such as the easy adhesion of reactants to the inner wall, the inevitable dead corners on the inner wall, the inconvenience of subsequent cleaning, the potential cross-contamination of subsequent materials by difficult-to-remove reactants, and the easy accumulation of air in the fluidized bed, which is not conducive to the uniform and sufficient rotational fluidization of materials, the embodiments of this application provide the following solutions.

[0029] Please see Figures 1 to 7 A fluidized bed designed to prevent cross-contamination includes a body 1. A feeding section 2 and a working section 3 are sequentially provided below the body 1. A movable base 4 is provided below the working section 3. An air inlet chamber is provided inside the movable base 4. An air distribution plate 42 is provided between the working section 3 and the movable base 4. An air inlet pipe 41 is connected to the movable base 4. This setup ensures that the material in working section 3 is agitated and boiled into a fluidized state, while simultaneously undergoing mixing and drying. During the fluidization process, the material is heated by heat exchange with the airflow, efficiently completing the mixing, drying, and granulation operations. After the drying process is completed, the equipment stops, the seal is released, and working section 3 is pulled out. It is then engaged with a fixed lifting and transfer machine to lift and discharge the granulated material, or a vacuum feeder is used to draw the material into the granulator for granulation, effectively avoiding cross-contamination of the products.

[0030] Please see Figures 5 to 7 The air inlet cavity of the mobile base 4 is equipped with an air direction adjustment mechanism, which is used to facilitate the even distribution of air in the mobile base 4 through the air distribution plate 42 into the working section 3. The wind direction adjustment mechanism includes multiple wind direction adjustment plates 5, a set of racks 55, multiple gears 54, a four-bar linkage 572, and a drive mechanism. Each of the multiple wind direction adjustment plates 5 is fixedly connected to a rotating shaft 51. The multiple wind direction adjustment plates 5 are rotatably connected to the movable base 4 through multiple rotating shafts 51. The drive mechanism includes a servo motor 57, a turntable 571, and a rocker arm 574. The servo motor 57 is fixedly mounted on the mounting plate 52. The output end of the servo motor 57 is coaxially fixedly connected to the turntable 571. One end of the rocker arm 574 is eccentrically set on the turntable 571, and the other end is rotatably connected to the four-bar linkage 572. The effect of this setup is that the output of the servo motor 57 drives the turntable 571 to rotate. Since the turntable 571 is eccentrically equipped with a rocker arm 574 at the end away from the servo motor 571, as the rocker arm 574 rotates with the turntable 571, the rocker arm 574 pulls the four-bar linkage 572 to drive a set of connecting rods 573 and rack 55 to move relative to each other on both sides of the turntable 571. Through the meshing transmission between the rack 55 and the gear 54, the angle of the multiple wind direction adjustment plates 5 inside the mobile base 4 can be precisely adjusted. The side wall of the movable base 4 is provided with a mounting plate 52. The mounting plate 52 is provided with a set of fixed limiting members 53 and a set of fixed shaft platforms 56. The set of fixed shaft platforms 56 is arranged between the set of fixed limiting members 53. The fixed limiting members 53 are provided with limiting grooves. The rack 55 is arranged in the limiting grooves. Multiple gears 54 are coaxially fixedly connected to multiple rotating shafts 51 respectively. A set of racks 55 is symmetrically arranged below the multiple gears 54, and the racks 55 mesh with the gears 54 for transmission. The end of the four-bar linkage 572 is provided with a connecting block. A connecting rod 573 is provided below each set of racks 55. A set of connecting rods 573 are coaxially inserted into a set of fixed shaft platforms 56 respectively, and the connecting rods 573 are fixedly connected to the connecting blocks. The drive mechanism is fixedly installed on the mounting plate 52. This setup allows the end of the rocker arm 574 furthest from the turntable 571 to be rotatably connected to a four-bar linkage 572 that is hinged at both ends. The hinge point of the four-bar linkage 572 is provided with a connecting block, and the connecting rod 573 is limited by the fixed shaft platform 56. The connecting blocks, which are fixedly connected to a set of connecting rods 573 respectively, only have the freedom of linear movement, which facilitates the relative movement of a set of racks 55 at both ends of the four-bar linkage 572.

[0031] Please see Figure 1 and Figure 4 The sealing mechanism is located at the connection between the beginning and end of the machine body 1, the feeding section 2 and the working section 3. The sealing mechanism is used to seal the machine body 1, the feeding section 2 and the working section 3 and to facilitate subsequent cleaning. The sealing mechanism includes a first sealing component, a second sealing component, and multiple latches 6. The first sealing component includes a first sealing bottom cover 11 disposed at one end of the machine body 1 near the feeding section 2 and a first sealing top cover 21 disposed at one end of the feeding section 2 near the machine body 1. The first sealing top cover 21 has a first sealing groove, and the first sealing bottom cover 11 has a first sealing protrusion adapted to the first sealing groove. The second sealing component includes a second sealing bottom cover 26 disposed at one end of the feeding section 2 away from the machine body 1 and a second sealing top cover 31 disposed at one end of the working section 3 away from the moving base 4. Multiple latches 6 are respectively disposed on the first sealing component and the second sealing component. Open the latch 6 on the reaction vessel of the working section 3 and the feeding section 2, and then, with the cooperation of the lifting mechanism, it is convenient to clean the body 1 of the fluidized bed vessel, the feeding section 2 and the bottom working section 3 after the drying process is completed. The operation is convenient and efficient.

[0032] Please see Figure 1 The lifting mechanism includes a set of fixed mounting cylinders 9 and a set of lifting support columns 91. The fixed mounting cylinder 9 has a mounting cavity, and a hydraulic cylinder is installed in the bottom of the mounting cavity. A support pad is fixedly connected to the bottom of the fixed mounting cylinder 9. One end of the lifting support column 91 is fixedly connected to the side wall of the machine body 1, and the other end is slidably connected to the fixed mounting cylinder 9. The output end of the hydraulic cylinder is fixedly connected to the lifting support column 91. The effect of this setup is that when the fluidized bed needs to be cleaned after the drying process, the latches 6 on the reaction vessels of the working section 3 and the feeding section 2 are opened, and the lifting support column 91 is lifted by the hydraulic cylinder in the fixed installation cylinder 9, so that the machine body 1 and the feeding section 2 are raised, and the protective frame 7 is pulled to pull out the moving base 4 and the working section 3 on the moving base 4.

[0033] Please see Figure 1 and Figure 4 The feeding section 2 is provided with a first observation window 22. A connector 23 is fixedly connected to the side wall of the feeding section 2. A connecting column 24 is fixedly connected to the connector 23. A lifting mechanism is provided on the side wall of the machine body 1. A pair of movable shaft platforms 92 are provided on the lifting mechanism. The connecting column 24 is rotatably connected to the pair of movable shaft platforms 92.

[0034] Please see Figure 1 and Figure 5 The top of the machine body 1 is provided with a set of mounting pipes 12, the feeding section 2 is connected to the feeding pipe 25, the feeding pipe 25 is provided with a material control valve 251, the side wall of the working section 3 is provided with a second observation window 32, the air inlet pipe 41 is provided with a control valve 411, the outer side of the movable base 4 is provided with a protective frame 7, and the bottom of the movable base 4 is provided with multiple casters 8. This setup allows staff to monitor the fluidized bed's interior in real time via the second observation window 32, while the protective frame 7 and casters 8 enable the fluidized bed to operate quickly and efficiently in the process flow.

[0035] Please see Figure 1 A vertical cavity is provided on the lifting support column 91, and a drive motor is fixedly installed at the top of the cavity. Limiting holes are provided on the side wall of the lifting support column 91 corresponding to the position of the cavity. A set of movable shafts 92 moves in the limiting holes and the cavity. A screw is provided in the vertical direction of the cavity. The output end of the drive motor is coaxially fixedly connected to the screw. A threaded hole adapted to the screw thread is provided on the movable shaft 92. This setup allows the screw to rotate via the output of the drive motor, causing the feed section 2 to separate from the machine body 1 in the vertical direction. This facilitates separate cleaning of the fluidized bed, resulting in a cleaner cleaning and preventing cross-contamination.

[0036] As can be seen from the above, the working principle of this application is as follows: When it is necessary to adjust the air direction in the air inlet cavity of the mobile base 4, the turntable 571 is driven to rotate by the output end of the servo motor 57. Since the turntable 571 is eccentrically provided with a rocker arm 574 at the end away from the servo motor 571, and the end of the rocker arm 574 away from the turntable 571 is rotatably connected to a four-bar linkage 572 that is hinged at both ends, the hinge point of the four-bar linkage 572 is provided with a connecting block, and the connecting rod 573 is limited by the fixed shaft platform 56. The connecting block, which is fixedly connected to a set of connecting rods 573, only has the freedom of linear movement. As the rocker arm 574 rotates with the turntable 571, the rocker arm 574 pulls the four-bar linkage 572, which drives a set of connecting rods 573 and rack 55 to move relative to each other on both sides of the turntable 571. Through the meshing transmission between the rack 55 and the gear 54, the angle of multiple wind direction adjustment plates 5 in the movable base 4 can be precisely adjusted. By dividing the fluidized bed container into a body 1, a material shaking section, a feeding section 2, and a bottom working section 3, when the fluidized bed needs to be cleaned after the drying process, the latches 6 on the reaction vessels of the working section 3 and the feeding section 2 are opened. Then, the hydraulic cylinder in the fixed installation cylinder 9 lifts the lifting support column 91, raising the body 1 and the feeding section 2. The protective frame 7 is pulled to pull out the movable base 4 and the working section 3 on the movable base 4, which are then engaged with the external fixed lifting and transferring machine. The granules are then lifted for discharge or drawn into the granulator using a vacuum feeder. The latches 6 on the feeding section 2 and the body 1 are then opened. The screw is driven to rotate through the output end of the drive motor, causing the movable shaft 92 to cause the feeding section 2 to separate from the material shaking section of the body 1 vertically. Then, the connecting column 24 is rotated to separate the feeding section 2 from the body 1 horizontally.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fluidized bed designed to prevent cross-contamination, characterized in that, include: The machine body (1) has a feeding section (2) and a working section (3) arranged in sequence below the machine body (1). A movable base (4) is provided below the working section (3). An air inlet chamber is provided inside the movable base (4). An air distribution plate (42) is provided between the working section (3) and the movable base (4). An air inlet pipe (41) is connected to the movable base (4). The wind direction adjustment mechanism is set in the air inlet cavity of the movable base (4). The wind direction adjustment mechanism is used to facilitate the uniform dispersion of the wind inside the movable base (4) through the air distribution plate (42) into the working section (3). A sealing mechanism is provided at the connection between the beginning and end of the machine body (1), the feeding section (2) and the working section (3). The sealing mechanism is used to seal the machine body (1), the feeding section (2) and the working section (3) and to facilitate the subsequent cleaning of the fluidized bed after the drying process is completed. The wind direction adjustment mechanism includes: Multiple wind direction adjustment plates (5), each of the multiple wind direction adjustment plates (5) is fixedly connected to a rotating shaft (51), and the multiple wind direction adjustment plates (5) are rotatably connected to the movable base (4) through multiple rotating shafts (51); A set of racks (55), and a mounting plate (52) is provided on the side wall of the movable base (4). A set of fixed limiting members (53) and a set of fixed shaft platforms (56) are provided on the mounting plate (52). A set of fixed shaft platforms (56) are arranged between a set of fixed limiting members (53). A limiting groove is opened on the fixed limiting member (53), and the racks (55) are arranged in the limiting groove. Multiple gears (54) are coaxially fixedly connected to multiple rotating shafts (51), and a set of racks (55) are symmetrically arranged below the multiple gears (54), and the racks (55) mesh with the gears (54) for transmission. The four-bar linkage (572) has a connecting block at its end. A set of racks (55) each has a connecting rod (573) below them. The connecting rods (573) are coaxially inserted into a set of fixed shafts (56), and the connecting rods (573) are fixedly connected to the connecting block. A drive mechanism for driving a set of racks (55) to move relative to each other at both ends of a four-bar linkage (572); The drive mechanism includes: Servo motor (57) and turntable (571), wherein the servo motor (57) is fixedly mounted on the mounting plate (52), and the output end of the servo motor (57) is coaxially and fixedly connected to the turntable (571); A rocker arm (574) is eccentrically mounted on a turntable (571) at one end and rotatably connected to a four-bar linkage (572) at the other end.

2. A fluidized bed for preventing cross-contamination according to claim 1, characterized in that: The feeding section (2) is provided with a first observation window (22), and a connector (23) is fixedly connected to the side wall of the feeding section (2). A connecting column (24) is fixedly connected to the connector (23). A lifting mechanism is provided on the side wall of the machine body (1). A set of movable shafts (92) is provided on the lifting mechanism. The connecting column (24) is rotatably connected to the set of movable shafts (92).

3. A fluidized bed for preventing cross-contamination according to claim 1, characterized in that: The sealing mechanism includes: The first sealing assembly includes a first sealing bottom cover (11) disposed at one end of the machine body (1) near the feeding section (2) and a first sealing top cover (21) disposed at one end of the feeding section (2) near the machine body (1). The first sealing top cover (21) is provided with a first sealing groove, and the first sealing bottom cover (11) is provided with a first sealing protrusion that matches the first sealing groove. The second sealing assembly includes a second sealing bottom cover (26) disposed at one end of the feeding section (2) away from the machine body (1) and a second sealing top cover (31) disposed at one end of the working section (3) away from the moving base (4). Multiple latches (6) are respectively disposed on the first sealing assembly and the second sealing assembly.

4. A fluidized bed for preventing cross-contamination according to claim 1, characterized in that: The top of the machine body (1) is provided with a set of installation pipes (12), the feeding section (2) is connected to a feeding pipe (25), the feeding pipe (25) is provided with a material control valve (251), the side wall of the working section (3) is provided with a second observation window (32), and the air inlet pipe (41) is provided with a control valve (411).

5. A fluidized bed for preventing cross-contamination according to claim 2, characterized in that: The lifting mechanism includes: A set of fixed mounting cylinders (9), wherein the fixed mounting cylinders (9) are provided with mounting cavities, a hydraulic cylinder is installed in the bottom of the mounting cavity, and a support pad is fixedly connected to the bottom of the fixed mounting cylinders (9); A set of lifting support columns (91), one end of which is fixedly connected to the side wall of the machine body (1) and the other end is slidably connected to the fixed mounting cylinder (9), and the output end of the hydraulic cylinder is fixedly connected to the lifting support column (91).

6. A fluidized bed for preventing cross-contamination according to claim 5, characterized in that: The lifting support column (91) has a vertical cavity. A drive motor is fixedly installed at the top of the cavity. A limit hole is opened on the side wall of the lifting support column (91) corresponding to the position of the cavity. A set of movable shafts (92) moves in the limit hole and the cavity. A screw is provided along the vertical direction of the cavity. The output end of the drive motor is coaxially fixedly connected to the screw. A threaded hole adapted to the screw thread is opened on the movable shaft (92).

7. A fluidized bed for preventing cross-contamination according to claim 1, characterized in that: The movable base (4) is provided with a protective frame (7) on the outside and multiple casters (8) on the bottom of the movable base (4).

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