Multifunctional fluidized bed granulator for laboratory

Abstract

The utility model discloses a multifunctional fluidized bed granulator for a laboratory, and belongs to the technical field of material granulation equipment. The device mainly comprises a control system, an air treatment system, an air exhaust and dust removal system, a material bin, a liquid conveying system, a jacking device and an air inlet mounting cylinder, the upper end of the air inlet mounting cylinder is fixedly connected with an air inlet distribution plate in a detachable mounting mode in a sealed mode, and the air inlet distribution plate is fixedly connected with the material bin in a detachable mounting mode in a sealed mode. The upper end of the material bin is detachably and fixedly connected with the fluidizing chamber in a sealed mode, a top spray gun is installed at the air inlet end of the first-stage dust remover in a sealed mode, and a side spray gun is also installed on the side wall of the material bin in a sealed mode. According to the utility model, any bed board form, atomization form and dust removal form can be flexibly combined by adopting a building block building mode, and the multifunctional granulating machine is diversified in function, high in practicability, compact and reasonable in structural design, small in occupied space and particularly suitable for places such as laboratories which need various granulating modes and are limited in site.

Description

Technical Field

[0001] This utility model belongs to the technical field of material granulation equipment. Specifically, it relates to a laboratory multi-functional fluidized bed granulator that is highly practical, versatile, easy and quick to switch granulation modes, and low in cost. Background Technology

[0002] The laboratory multi-functional fluidized bed granulator is a multi-functional granulation and drying equipment that utilizes negative pressure fluidized bed technology and spray drying technology to achieve mass and heat exchange, and to complete material granulation, coating, and pelletizing. The working principle of the fluidized bed granulator is based on fluidized bed granulation. It introduces air into a container filled with raw materials, using heating and pressurization to bring the raw materials to a semi-fluid state. Then, liquids such as binders are sprayed out through nozzles to form particles. These particles continuously collide and fuse within the container, ultimately forming particles of the desired size.

[0003] Chinese patent CN208693798U, authorized on April 5, 2019, entitled "Multifunctional Fluidized Bed Granulator," discloses the main structure of a traditional multifunctional fluidized bed granulator, which mainly includes: a machine body, on which, from bottom to top, are arranged a lifting base component, a material bin, a diffusion chamber, and a collection chamber. The collection chamber is also equipped with an exhaust duct system. An air handling system is also provided on the machine body. The material bin includes several granulation material bins and several coating material bins. One of the granulation material bins or coating material bins is detachably installed between the lifting base component and the diffusion chamber. A collection bag is installed between the collection chamber and the diffusion chamber, and the collection bag is connected to the lower end of the collection chamber by a magnetic fixing structure. The air handling system includes a housing, a fan, and an air handling unit. The air handling unit is located inside the housing and includes several air filters and a heater. The heater is located between two adjacent air filters. The pelleting material bins include 1KG and 3KG pelleting material bins, and the coating material bins include 1KG and 3KG coating material bins. The material bins include various pelleting and coating material bins, allowing for pelleting and coating capabilities on the same pelleting machine by changing the material bins on the same machine.

[0004] It is evident that traditional multi-functional fluidized bed granulators rely entirely on different material silos to switch between granulation and coating functions. The internal structure of these material silos is cumbersome and complex, and the manufacturing cost is high. Furthermore, it is impossible to select different airflow patterns according to actual experimental needs, resulting in a relatively limited functionality. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a laboratory multi-functional fluidized bed granulator that is highly practical, versatile, easy to switch between granulation modes, and low in cost.

[0006] This utility model is achieved through the following technical solution:

[0007] A laboratory multifunctional fluidized bed granulator includes a control system for controlling equipment operation, an air handling system for providing clean hot air, an exhaust and dust removal system for discharging clean air, a material silo for loading materials, a liquid conveying system for conveying sprayed liquid, and a lifting device for changing the position of the material silo. It also includes an air inlet mounting cylinder that is sealed and connected to the air handling system. The air inlet mounting cylinder is fixedly connected to the lifting device. The upper end of the air inlet mounting cylinder is detachably and sealed to an air inlet distribution plate. The air inlet distribution plate is detachably and sealed to the material silo. The upper end of the material silo is detachably and sealed to a fluidizing chamber. The fluidizing chamber is detachably and sealed to the air inlet of the primary dust collector of the exhaust and dust removal system. A top spray gun connected to the liquid conveying system is also sealed and installed at the air inlet of the primary dust collector. A side spray gun connected to the liquid conveying system is also sealed and installed on the side wall of the material silo.

[0008] Preferably, the air inlet distribution plate is a bottom-spray type air inlet distribution plate or a non-bottom-spray type air inlet distribution plate.

[0009] Preferably, a sealing ring is installed between the upper end of the air inlet mounting cylinder and the bottom end of the air inlet distribution plate, and the air inlet mounting cylinder and the air inlet distribution plate are fixedly connected by a clamp.

[0010] A sealing ring is installed between the upper end of the air inlet distribution plate and the bottom end of the material bin, and the air inlet distribution plate and the material bin are fixedly connected by a clamp.

[0011] A sealing ring is installed between the upper end of the material hopper and the bottom end of the fluidization chamber, and the material hopper and the fluidization chamber are fixedly connected by a clamp.

[0012] A sealing ring is installed between the upper end of the fluidization chamber and the air inlet end of the primary dust collector, and the fluidization chamber and the air inlet end of the primary dust collector are fixedly connected by bolts.

[0013] Preferably, the air handling system includes a blower and an air heater, with hot air from the air heater entering the air inlet mounting cylinder via a hot air duct.

[0014] Preferably, the primary dust collector is a dust collector with a built-in sintered mesh; the exhaust dust removal system also includes a cyclone dust collector, a bag filter dust collector and an induced draft fan, wherein the air inlet of the cyclone dust collector is in sealed communication with the air outlet of the primary dust collector, the air outlet of the cyclone dust collector is in sealed communication with the air inlet of the bag filter dust collector, and the air outlet of the bag filter dust collector is in sealed communication with the induced draft fan.

[0015] Preferably, the discharge ports of both the cyclone dust collector and the bag filter dust collector are equipped with material collectors.

[0016] Preferably, the fluidization chamber is a visible fluidization chamber; the material silo is also equipped with a sampling valve.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model can adopt a "building block" approach to flexibly combine any bed board form, atomization form and dust removal method to adapt to the needs of various granulation processes; that is, top spray, side spray or bottom spray can be selected according to the actual experimental needs, and swirl bed mode, fluidized bed mode or jet bed mode can also be selected according to the actual experimental needs.

[0019] 2. This utility model has a simple structural design and the granulation method can be switched quickly and easily, and the required granulation process can be completed in a very short time.

[0020] 3. This utility model has diverse functions, strong practicality, compact and reasonable structural design, and small space occupation. It is especially suitable for laboratories and other places that require multiple granulation methods and have limited space. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the system flow of this utility model.

[0023] In the picture:

[0024] 1. Control system; 21. Blower; 22. Air heater; 31. Primary dust collector; 32. Cyclone dust collector; 321. Material collector; 33. Bag filter dust collector; 34. Exhaust fan; 4. Material silo; 41. Sampling valve; 5. Lifting device; 6. Air inlet distribution plate; 7. Fluidized chamber; 81. Top spray gun; 82. Side spray gun; 9. Air inlet mounting cylinder. Detailed Implementation

[0025] To enable readers to better understand the design intent of this utility model, the technical solution described below is further described in conjunction with embodiments. It should be noted that directional terms that may appear in the following paragraphs, including but not limited to "up," "down," "left," "right," "front," and "back," are based on the visual orientation shown in the accompanying drawings and should not be considered as limitations on the scope of protection or technical solution of this utility model. Their purpose is solely to facilitate a better understanding of the technical solution described in this utility model by those skilled in the art.

[0026] In this specification, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1

[0028] like Figures 1 to 2A laboratory multi-functional fluidized bed granulator includes a control system 1 for controlling equipment operation, an air handling system for providing clean hot air, an exhaust and dust removal system for discharging clean air, a material hopper 4 for loading materials, a liquid conveying system for conveying the sprayed liquid, and a lifting device 5 for changing the position of the material hopper 4. It also includes an air inlet mounting cylinder 9 that is in sealed communication with the air handling system. The air inlet mounting cylinder 9 is fixedly connected to the lifting device 5. The upper end of the air inlet mounting cylinder 9 is detachably and sealed to the air inlet distribution plate 6. The air inlet distribution plate 6 is detachably and sealed to the material silo 4. The upper end of the material silo 4 is detachably and sealed to the fluidization chamber 7. The fluidization chamber 7 is detachably and sealed to the air inlet end of the primary dust collector 31 of the exhaust dust removal system. A top spray gun 81 connected to the liquid conveying system is also sealed and installed at the air inlet end of the primary dust collector 31. A side spray gun 82 connected to the liquid conveying system is also sealed and installed on the side wall of the material silo 4. In this embodiment, the air inlet mounting cylinder 9 is a transitional connector connecting the air inlet distribution plate 6 and the lifting device 5, and also serves as a hot air flow channel. When the lifting device 5 moves upward, it drives the air inlet mounting cylinder 9, the air inlet distribution plate 6, and the material hopper 4 to move upward synchronously until they reach the designated stroke. At this point, the material hopper 4 is in sealed contact with the fluidization chamber 7, locking the material hopper 4 and the fluidization chamber 7 together, thus achieving a sealed and fixed connection between the material hopper 4 and the fluidization chamber 7. In this embodiment, the air inlet distribution plate 6 is installed in a detachable manner between the air inlet mounting cylinder 9 and the material hopper 4. The selection of different air inlet distribution plates 6 will determine the airflow pattern entering the fluidization chamber 7, and thus determine whether to use a vortex bed mode, a fluidized bed mode, or a jet bed mode, etc. For example, common air inlet distribution plates 6 include vertical perforated type, multi-layer mesh structure type, and woven mesh plate type, etc. Users can select the appropriate air inlet distribution plate 6 according to actual experimental needs. In this embodiment, a top spray gun 81 is designed in a sealed manner at the air inlet end of the primary dust collector 31; the top spray method is conducive to the preparation of loose and porous particles and is suitable for granulation. A side spray gun 82 is designed in a sealed manner on the material hopper 4. The side spray method makes the material movement trajectory more complex, which is conducive to the more uniform coverage of the material surface by the atomized liquid, and is suitable for occasions where more fine granulation effect is required. Bottom spray refers to spraying the atomized liquid at the lowest point of the material movement, and the spray direction is consistent with the material movement direction, which is suitable for coating. In this embodiment, the air inlet distribution plate 6 can be selected with or without nozzles according to actual needs. If it has nozzles, it is a bottom spray type air inlet distribution plate; if it does not have nozzles, it is a non-bottom spray type air inlet distribution plate. Top spray, side spray, and bottom spray are three spraying methods, and users can choose freely according to actual experimental needs.

[0029] The working principle of this embodiment is as follows: Under the action of the induced draft fan 34, the blower 21, and the air heater 22, clean hot air enters the air inlet mounting cylinder 9 and is evenly distributed by the air inlet distribution plate 6 before entering the material silo 4 and the fluidization chamber 7. In the fluidization chamber 7, due to the negative pressure, the material powder particles in the material silo 4 are in a fluidized state. The hot air preheats and fully mixes the material powder particles, and then atomizes and sprays in liquids such as binders, causing several particles to aggregate into granules containing binders. Due to the continuous drying of the material by the hot air, the moisture in the granules evaporates, and the binder solidifies. This process is repeated continuously to form an ideal, uniform particle state. Different air inlet distribution plates 6 and different spraying methods can result in different particle shapes and sizes. During the granulation process, the dust generated will follow the airflow into the exhaust dust removal system. The clean exhaust gas, filtered by the exhaust dust removal system, is discharged under the guidance of the induced draft fan 34.

[0030] This embodiment allows for flexible combination of any bed type, atomization method, and dust removal method using a "building block" approach, adapting to the needs of various granulation processes. Specifically, it allows for selection of top spray, side spray, or bottom spray according to actual experimental requirements, and also enables selection of cyclone bed, fluidized bed, or jet bed modes, etc. The structural design is simple, and the granulation method switching is convenient and quick, allowing the required granulation process to be completed in a very short time.

[0031] This embodiment is versatile, highly practical, has a compact and reasonable structural design, and occupies little space. It is especially suitable for laboratories and other places that require multiple granulation methods and have limited space.

[0032] Example 2

[0033] Based on Embodiment 1, this embodiment continues to describe in detail the technical features involved therein and the functions and roles of these technical features in this utility model, so as to help those skilled in the art to fully understand the technical solution of this utility model and reproduce it.

[0034] like Figures 1 to 2A laboratory multifunctional fluidized bed granulator includes a control system 1 for controlling equipment operation, an air handling system for providing clean hot air, an exhaust and dust removal system for discharging clean air, a material silo 4 for loading materials, a liquid conveying system for conveying sprayed liquid, and a lifting device 5 for changing the position of the material silo 4. It also includes an air inlet mounting cylinder 9 that is in sealed communication with the air handling system. The air inlet mounting cylinder 9 is fixedly connected to the lifting device 5, and its upper end is detachably and sealed to an air inlet distribution plate 6. Specifically, a sealing ring is installed between the upper end of the air inlet mounting cylinder 9 and the bottom end of the air inlet distribution plate 6, and the air inlet mounting cylinder 9 and the air inlet distribution plate 6 are fixedly connected by a clamp. The air inlet distribution plate 6 is detachably and sealed to the material silo 4; specifically, a sealing ring is installed between the upper end of the air inlet distribution plate 6 and the bottom end of the material silo 4, and the air inlet distribution plate 6 and the material silo 4 are fixedly connected by a clamp. The upper end of the material silo 4 is detachably and sealed to the fluidization chamber 7. Specifically, a sealing ring is installed between the upper end of the material silo 4 and the bottom end of the fluidization chamber 7, and the material silo 4 and the fluidization chamber 7 are fixedly connected by a clamp. The fluidization chamber 7 is detachably and sealed to the air inlet of the primary dust collector 31 of the exhaust dust removal system. A sealing ring is installed between the upper end of the fluidization chamber 7 and the air inlet end face of the primary dust collector 31, and the fluidization chamber 7 and the air inlet end of the primary dust collector 31 are fixedly connected by bolts. This embodiment features a simple detachable structure, convenient and quick disassembly and assembly, and easy manufacturing. In this embodiment, a top spray gun 81 connected to the liquid conveying system is also sealed at the air inlet end of the primary dust collector 31; a side spray gun 82 connected to the liquid conveying system is also sealed on the side wall of the material silo 4.

[0035] In this embodiment, the primary dust collector 31 is a built-in sintered mesh type dust collector. The exhaust dust removal system also includes a cyclone dust collector 32, a bag filter dust collector 33, and an induced draft fan 34. The air inlet of the cyclone dust collector 32 is in sealed communication with the air outlet of the primary dust collector 31, the air outlet of the cyclone dust collector 32 is in sealed communication with the air inlet of the bag filter dust collector 33, and the air outlet of the bag filter dust collector 33 is in sealed communication with the induced draft fan 34. Material collectors 321 are installed at the discharge ports of both the cyclone dust collector 32 and the bag filter dust collector 33. This embodiment has three different dust removal methods. Users can choose between step-by-step or non-step-by-step dust removal according to their actual needs. For non-step-by-step dust removal, simply remove the corresponding dust removal components.

[0036] The air handling system in this embodiment includes a blower 21 and an air heater 22. Hot air from the air heater 22 enters the air inlet mounting cylinder 9 through a hot air duct. The fluidization chamber 7 is a visible fluidization chamber; a sampling valve 41 is also provided on the material silo 4.

[0037] This embodiment allows for flexible combination of any bed type, atomization method, and dust removal method using a "building block" approach, adapting to the needs of various granulation processes. Specifically, it allows for selection of top spray, side spray, or bottom spray according to actual experimental requirements, and also enables selection of cyclone bed, fluidized bed, or jet bed modes, etc. The structural design is simple, and the granulation method switching is convenient and quick, allowing the required granulation process to be completed in a very short time.

[0038] This embodiment is versatile, highly practical, has a compact and reasonable structural design, and occupies little space. It is especially suitable for laboratories and other places that require multiple granulation methods and have limited space.

[0039] In summary, this is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent variations and modifications made in accordance with the shape, structure, features and spirit of the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A laboratory multifunctional fluidized bed granulator, comprising a control system (1) for controlling the operation of the equipment, an air handling system for providing clean hot air, an exhaust and dust removal system for discharging clean air, a material hopper (4) for loading materials, a liquid conveying system for conveying the sprayed liquid, and a lifting device (5) for changing the position of the material hopper (4), characterized in that: It also includes an air inlet mounting cylinder (9) that is in a closed connection with the air handling system. The air inlet mounting cylinder (9) is fixedly connected to the lifting device (5). The upper end of the air inlet mounting cylinder (9) is sealed and fixed to the air inlet distribution plate (6) by a detachable installation method. The air inlet distribution plate (6) is sealed and fixed to the material silo (4) by a detachable installation method. The upper end of the material silo (4) is sealed and fixed to the fluidization chamber (7) by a detachable installation method. The fluidization chamber (7) is sealed and fixed to the air inlet end of the primary dust collector (31) of the exhaust dust removal system by a detachable installation method. The air inlet end of the primary dust collector (31) is also sealed and fixedly installed with a top spray gun (81) that is connected to the liquid conveying system. The side wall of the material silo (4) is also sealed and fixedly installed with a side spray gun (82) that is connected to the liquid conveying system.

2. The laboratory multifunctional fluidized bed granulator according to claim 1, characterized in that: The air inlet distribution plate (6) is either a bottom-spray type air inlet distribution plate or a non-bottom-spray type air inlet distribution plate.

3. The laboratory multifunctional fluidized bed granulator according to claim 1, characterized in that: A sealing ring is installed between the upper end of the air inlet mounting cylinder (9) and the bottom end of the air inlet distribution plate (6), and the air inlet mounting cylinder (9) and the air inlet distribution plate (6) are fixedly connected by a clamp. A sealing ring is installed between the upper end of the air inlet distribution plate (6) and the bottom end of the material bin (4), and the air inlet distribution plate (6) and the material bin (4) are fixedly connected by a clamp. A sealing ring is installed between the upper end of the material bin (4) and the bottom end of the fluidization chamber (7), and the material bin (4) and the fluidization chamber (7) are fixedly connected by a clamp. A sealing ring is installed between the upper end of the fluidization chamber (7) and the air inlet end face of the primary dust collector (31), and the fluidization chamber (7) and the air inlet end of the primary dust collector (31) are fixedly connected by bolt fasteners.

4. The laboratory multifunctional fluidized bed granulator according to claim 1, characterized in that: The air handling system includes a blower (21) and an air heater (22). Hot air from the air heater (22) enters the air inlet mounting cylinder (9) through a hot air duct.

5. A laboratory multifunctional fluidized bed granulator according to claim 1, characterized in that: The primary dust collector (31) is a built-in sintered mesh type dust collector; the exhaust dust removal system also includes a cyclone dust collector (32), a bag dust collector (33) and an induced draft fan (34). The air inlet of the cyclone dust collector (32) is sealed and connected to the air outlet of the primary dust collector (31), the air outlet of the cyclone dust collector (32) is sealed and connected to the air inlet of the bag dust collector (33), and the air outlet of the bag dust collector (33) is sealed and connected to the induced draft fan (34).

6. A laboratory multifunctional fluidized bed granulator according to claim 5, characterized in that: Material collectors (321) are installed at the discharge ports of both the cyclone dust collector (32) and the bag dust collector (33).

7. A laboratory multifunctional fluidized bed granulator according to claim 1, characterized in that: The fluidization chamber (7) is a visible fluidization chamber; the material silo (4) is also equipped with a sampling valve (41).

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