A fume hood purification device

Abstract

This utility model discloses a fume hood purification device, relating to the field of air purification technology. The utility model includes a connecting plate, with an air duct connected to the top of the connecting plate. A connecting pipe is disposed above the air duct, and an activated carbon filter layer is installed inside the connecting pipe. This utility model incorporates a pressurization component. Specifically, a motor rotates along with a polygonal rotating block on a rotating shaft. During the rotation of the polygonal rotating block, several connecting blocks drive several fan blades to rotate together. The rotation of these fan blades compresses the air entering the cavity, which is then swept out from the top of the cavity by the fan blades. This significantly increases the airflow velocity, allowing for the processing of more gas in a shorter time, making it suitable for high-volume or sudden pollution scenarios. It also reduces the residence time of large particles inside the purification pipe, lowering the probability of clogging and extending the service life of the filter material.

Description

Technical Field

[0001] This utility model belongs to the field of air purification technology, and in particular relates to a fume hood purification device. Background Technology

[0002] In many laboratories, industrial workshops, and other places, fume hoods are key equipment for ensuring working environment safety and air quality. Traditional fume hoods mainly rely on natural airflow or simple mechanical ventilation systems to remove pollutants from the hood. However, with the increasing complexity of experimental and production processes and the higher requirements for environmental control, traditional fume hoods have gradually revealed some problems. For example, in some chemical experiments, various harmful chemical fumes, dust, and other pollutants are generated. If the gas flow rate inside the fume hood is too slow, these pollutants are difficult to remove in time and will accumulate inside the hood, increasing the residence time of large particles inside the purification pipes, increasing the probability of blockage, and reducing the service life of the filter media. Therefore, a fume hood purification device is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a fume hood purification device. By setting up a pressurization component, specifically, a motor is started and rotated together with a polygonal rotating block on a rotating shaft. During the rotation of the polygonal rotating block, several connecting blocks drive several fan blades to rotate together. During the rotation of the fan blades, the air entering the cavity is compressed and then discharged from the top of the cavity after being swept by the fan blades. At this time, the air flow speed is greatly increased, which solves some problems that have gradually emerged in traditional fume hoods. For example, in some chemical experiments, various harmful chemical fumes, dust and other pollutants are generated. If the gas flow rate in the fume hood is too slow, these pollutants are difficult to be discharged in time and will accumulate in the hood, increasing the residence time of large particles in the purification pipe, increasing the probability of blockage, and reducing the service life of the filter material.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a fume hood purification device, including a connecting plate, an air guide pipe connected to the top of the connecting plate, a connecting pipe above the air guide pipe, an activated carbon filter layer installed inside the connecting pipe, and further comprising: A pressurization unit, installed between the air duct and the connecting pipe, is used to increase the airflow velocity inside the fume hood; and A purification unit is installed inside the connecting pipe. The purification unit is used to filter impurities in the air and purify the air. The inner walls of the air duct and the connecting pipe are both smooth, and they are connected to the fume hood via a connecting plate during equipment use.

[0005] Furthermore, the pressurization section includes a pressurization component, which is disposed at the bottom of the purification section. The pressurization component reduces the residence time of large particulate impurities in the air within the purification pipe. When the airflow speed is significantly increased, more gas can be processed in a short time, making it suitable for high-volume or sudden pollution scenarios.

[0006] Furthermore, the purification unit includes an installation assembly connected to a connecting pipe, the installation assembly being used to support the filter media; A quick-release assembly, installed inside the mounting assembly, is used for the rapid removal of the filter media; and A locking assembly is installed outside the mounting assembly and is used for the quick installation of filter media; The quick-release and locking components facilitate rapid assembly and disassembly of the filter media, significantly improving work efficiency.

[0007] Furthermore, the booster assembly includes a cavity, a motor is mounted on the front of the cavity, a polygonal rotating block is arranged inside the cavity, a rotating shaft is connected inside the polygonal rotating block, the output end of the back of the cavity is connected to the front of the rotating shaft through a coupling, a number of connecting blocks are welded to the outer ring of the polygonal rotating block, and a fan blade is connected to each of the connecting blocks through a pin. Slide rails are provided on both the front and back of the inner wall of the cavity. Among them, the ends of several fan blades away from the connecting block slide inside the slide rail, while the outer surface of the rotating shaft is rotatably connected to the inside of the cavity.

[0008] Furthermore, the mounting assembly includes a mounting frame, the top and bottom of which are welded to a connecting pipe. Guide frames are installed on the left and right sides of the inner wall of the mounting frame. A filter screen is provided inside the mounting frame, and the outer surface of the filter screen is inserted into the guide frame. A pressure plate is provided on the front of the mounting frame, and a sealing strip is installed on the side of the pressure plate near the mounting frame. The outer surface of the sealing strip is adapted to the opening on the front of the mounting frame. The pressure plate is U-shaped, and the side of the sealing strip away from the pressure plate is in contact with the front of the filter screen.

[0009] Furthermore, the quick-release assembly includes a baffle, on the side of the baffle away from the filter screen connected to a spring, the side of the spring away from the slide groove connected to the back of the inner wall of the mounting frame, and the side of the baffle away from the spring contacting the side of the filter screen away from the sealing strip. The quick-release assembly is provided in two sets. The left and right sides of the back of the mounting frame are provided with baffles, and the interior of the two baffles are slidably connected to the side of the slide groove that is away from each other.

[0010] Furthermore, the locking assembly includes a limiting frame, which is externally connected to the mounting frame. A fixed frame is connected to the side of the limiting frame away from the mounting frame. A limiting rod is slidably connected inside the fixed frame. A second spring is sleeved on the outer surface of the limiting rod. The side of the second spring away from the limiting frame is connected to the inner wall of the fixed frame. A limiting ring is connected to the side of the second spring away from the fixed frame. The inner ring of the limiting ring is welded to the outer surface of the limiting rod. A pull button is provided on the side of the fixed frame away from the limiting frame. The locking assembly consists of two sets. The left and right sides of the pressure plate are inserted into the interior of the limiting frame. Limiting holes are opened on both sides of the pressure plate. At the same time, the outer surfaces of the two limiting rods are inserted into the interior of the limiting holes. The two limiting rods pass through the fixed frame and extend to the side away from the limiting frame.

[0011] This utility model has the following beneficial effects: This invention utilizes a pressurization component. Specifically, a starting motor rotates along with a polygonal rotating block via a rotating shaft. During the rotation of the polygonal rotating block, several connecting blocks drive several fan blades to rotate as well. As the fan blades rotate, they compress the air entering the cavity, which is then swept out from the top of the cavity by the fan blades. This significantly increases the airflow speed, enabling the processing of more gas in a shorter time, making it suitable for high-volume or sudden pollution scenarios. It also reduces the residence time of large particles inside the purification pipe, lowers the probability of clogging, and extends the service life of the filter material.

[0012] This utility model incorporates a quick-release assembly and a locking assembly. Specifically, pulling the lever moves the limiting rod, which, in conjunction with spring two and the limiting hole, enables the rapid installation of the filter screen. Simultaneously, after the pressure plate is removed, the baffle, driven by spring one, pushes the filter screen out from inside the mounting frame, facilitating easy removal by the operator. This rapid installation and removal of the filter screen significantly improves the operator's work efficiency, reduces their labor intensity, and greatly enhances the practicality of the equipment.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the cavity of this utility model; Figure 3 This is a schematic diagram of the overall structure of the polygonal rotating block of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the mounting frame of this utility model; Figure 5 This utility model Figure 4 A magnified structural diagram of A in the middle; Figure 6 This utility model Figure 4 A magnified structural diagram of B in the diagram; Figure 7 This is a schematic diagram of the overall structure of the pressure plate of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 111. Connecting plate; 112. Air duct; 113. Connecting pipe; 114. Activated carbon filter layer; 2. Pressurization section; 21. Pressurization component; 211. Chamber; 212. Motor; 213. Slide rail; 214. Polygonal rotating block; 215. Rotating shaft; 216. Connecting block; 217. Fan blade; 3. Purification section; 31. Mounting component; 311. Mounting frame; 312. Pressure plate; 313. Sealing strip; 314. Filter screen; 315. Guide frame; 32. Quick release component; 321. Slide groove; 322. Baffle; 323. Spring one; 33. Locking component; 331. Limiting frame; 332. Spring two; 333. Pull button; 334. Fixing frame; 335. Limiting rod; 336. Limiting hole; 337. Limiting ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-7 As shown, this utility model is a fume hood purification device, including a connecting plate 111, an air guide pipe 112 connected to the top of the connecting plate 111, a connecting pipe 113 arranged above the air guide pipe 112, an activated carbon filter layer 114 installed inside the connecting pipe 113, and further including: Pressurization unit 2, installed between air duct 112 and connecting pipe 113, is used to increase the airflow velocity inside the fume hood; and Purification unit 3 is installed inside the connecting pipe 113. Purification unit 3 is used to filter impurities in the air and purify the air. The inner walls of the air duct 112 and the connecting pipe 113 are both smooth, and they are connected to the fume hood via the connecting plate 111 when the equipment is in use.

[0019] The pressurization unit 2 includes a pressurization component 21, which is located at the bottom of the purification unit 3. The pressurization component 21 reduces the residence time of large particulate impurities in the air in the purification pipe. When the airflow speed is greatly increased, it can not only process more gas in a short time, but is also suitable for high air volume or sudden pollution scenarios.

[0020] The purification unit 3 includes a mounting assembly 31, which is connected to the connecting pipe 113 and is used to support the filter media. Quick-release assembly 32, installed inside mounting assembly 31, is used for quick removal of the filter media; and Locking assembly 33 is installed outside the mounting assembly 31 and is used for quick installation of filter media; The quick-release assembly 32 and the locking assembly 33 facilitate the rapid disassembly and assembly of the filter material, greatly improving work efficiency.

[0021] The booster assembly 21 includes a cavity 211, a motor 212 mounted on the front of the cavity 211, a polygonal rotating block 214 disposed inside the cavity 211, a rotating shaft 215 connected inside the polygonal rotating block 214, the output end of the back of the cavity 211 being connected to the front of the rotating shaft 215 via a coupling, a number of connecting blocks 216 welded to the outer ring of the polygonal rotating block 214, and a fan blade 217 connected to each of the connecting blocks 216 via pins, and slide rails 213 provided on both the front and back of the inner wall of the cavity 211; In this system, several fan blades 217 slide inside the slide rail 213 at the ends away from the connecting block 216. At the same time, the outer surface of the rotating shaft 215 is rotatably connected to the inside of the cavity 211. The starting motor 212 rotates together with the polygonal rotating block 214 through the rotating shaft 215. During the rotation of the polygonal rotating block 214, several fan blades 217 will rotate together through the action of several connecting blocks 216. During the rotation of several fan blades 217, the air entering the cavity 211 will be compressed and then discharged from the top of the cavity 211 after being swept by the fan blades 217. At this time, the air flow speed will be greatly increased, which can not only process more gas in a short time, making it suitable for high air volume or sudden pollution scenarios, but also reduce the residence time of large particles inside the purification pipe, reduce the probability of blockage, and extend the service life of the filter material.

[0022] The mounting assembly 31 includes a mounting frame 311, the top and bottom of which are welded to the connecting pipe 113. Guide frames 315 are installed on the left and right sides of the inner wall of the mounting frame 311. A filter screen 314 is provided inside the mounting frame 311. The outer surface of the filter screen 314 is inserted into the guide frame 315. A pressure plate 312 is provided on the front of the mounting frame 311. A sealing strip 313 is installed on the side of the pressure plate 312 near the mounting frame 311. The outer surface of the sealing strip 313 is adapted to the opening on the front of the mounting frame 311. The pressure plate 312 is U-shaped, and the side of the sealing strip 313 away from the pressure plate 312 is in contact with the front of the filter screen 314.

[0023] The quick-release assembly 32 includes a baffle 322. A spring 323 is connected to the side of the baffle 322 away from the filter screen 314. The side of the spring 323 away from the slide groove 321 is connected to the back of the inner wall of the mounting frame 311. The side of the baffle 322 away from the spring 323 contacts the side of the filter screen 314 away from the sealing strip 313. The quick-release assembly 32 is provided in two sets, with baffles 322 located on the left and right sides of the back of the inner wall of the mounting frame 311. The interiors of both baffles 322 are far from the slide groove 321. The locking assembly 33 includes a limiting frame 331, which is externally connected to the mounting frame 311. A fixed frame 334 is connected to the side of the limiting frame 331 away from the mounting frame 311. A limiting rod 335 is slidably connected inside the fixed frame 334. A second spring 332 is sleeved on the outer surface of the limiting rod 335. The side of the second spring 332 away from the limiting frame 331 is connected to the inner wall of the fixed frame 334. A limiting ring 337 is connected to the side of the second spring 332 away from the fixed frame 334. The inner ring of the positioning ring 337 is welded to the outer surface of the limiting rod 335. A pull button 333 is provided on the side of the fixed frame 334 away from the limiting frame 331. The locking assembly 33 is provided in two sets. The left and right sides of the pressure plate 312 are inserted into the inside of the limiting frame 331. Limiting holes 336 are opened on the left and right sides of the pressure plate 312. At the same time, the outer surfaces of the two limiting rods 335 are inserted into the inside of the limiting holes 336. The two limiting rods 335 pass through the fixed frame 334 and extend to the side away from the limiting frame 331. Pulling the pull button When the limit rod 335 moves, the limit rod 335, together with the spring 332 and the limit hole 336, enables the quick installation of the filter screen 314. At the same time, when the pressure plate 312 is removed, the baffle 322 will push the filter screen 314 out of the mounting frame 311 through the action of the spring 323, making it easy for the staff to pick it up. The quick installation and removal of the filter screen 314 greatly improves the work efficiency of the staff, reduces the labor intensity of the staff, and greatly improves the practicality of the equipment.

[0024] One specific application of this embodiment is as follows: In use, the connecting plate 111 is first connected to the exhaust port of the fume hood. During the use of the fume hood, the air discharged from the fume hood enters the cavity 211 through the air guide duct 112. At this time, the motor 212 is started, driving the rotating shaft 215 to rotate. When the rotating shaft 215 rotates, it drives the polygonal rotating block 214 to rotate as well. During the rotation of the polygonal rotating block 214, it drives several fan blades 217 to rotate together through the action of several connecting blocks 216. During the rotation of the fan blades 217, the end furthest from the connecting block 216 moves inside the slide rail 213. Simultaneously, the slide rail 213 provides a certain limit to the movement trajectory of the fan blades 217. The air entering the cavity 211 is compressed during the rotation of several fan blades 217, and then discharged from the top of the cavity 211 after being swept by the fan blades 217. At the same time, the connecting pipe 113 and the air guide pipe 112 at the top of the cavity 211 are eccentrically installed with the cavity 211. After the air inside the cavity 211 is compressed by the rotation of several fan blades 217, it is discharged. At this time, the air flow speed will be greatly increased, which can not only process more gas in a short time, but also be suitable for high air volume or sudden pollution scenarios. At the same time, it can also reduce the residence time of large particles in the purification pipe, reduce the probability of blockage, and extend the service life of the filter material. At this time, the air will be discharged after being filtered by the filter screen 314 and the activated carbon filter layer 114. When installing the filter screen 314, first insert the filter screen 314 into the mounting frame 311, and simultaneously insert the filter screen 314 into the guide frames 315 on both sides of the mounting frame 311. The two guide frames 315 guide the insertion of the filter screen 314. Then, press the pressure plate 312 against the front of the mounting frame 311. At this time, the sealing strip 313 will be embedded in the opening on the front of the mounting frame 311, providing a certain sealing effect. At the same time, when the pressure plate 312 drives the sealing strip 313 to squeeze the filter screen 314, the filter screen 314 will squeeze the baffle 322. The baffle 322 will be subjected to force within the slide groove 321. During the sliding process, the baffle 322 will compress the spring 323. The spring 323 will contract and store force due to the limiting effect of the inner wall of the mounting frame 311. When the filter screen 314 is subsequently disassembled and the pressure plate 312 is removed from the mounting frame 311, the baffle 322 will release the compressive force on the filter screen 314. At this time, the spring 323 will generate a certain rebound force and drive the baffle 322 to reset. During the reset process of the baffle 322, the filter screen 314 will be pushed out of the mounting frame 311, making it easier for the staff to take out the filter screen 314, improving the speed of filter screen 314 replacement and improving work efficiency. When the pressure plate 312 drives the sealing strip 313 to squeeze the filter screen 314, the left and right sides of the pressure plate 312 will insert into the limiting frame 331. At this time, pulling the button 333 will drive the limiting rod 335 to move. During the movement of the guide frame 315, it will slide inside the fixed frame 334. At the same time, the movement of the limiting rod 335 will drive the limiting ring 337 to move together. During the movement of the limiting ring 337, it will squeeze the second spring 332. The second spring 332 will contract and store force due to the limiting effect of the inner wall of the fixed frame 334. When the pressure plate 312... 12. When the device continues to be pushed into the mounting frame 311, the pull button 333 is released. At this time, the spring 332 will generate a certain rebound force and drive the limit ring 337 to reset. During the reset process, the limit ring 337 will drive the limit rod 335 to move together. At this time, the limit rod 335 will be inserted into the limit hole 336. The limit rod 335 will limit and fix the pressure plate 312 through the limit hole 336. At this time, the installation and fixation of the filter screen 314 is completed. The convenient and quick installation method further improves the replacement efficiency of the filter screen 314 and greatly improves the practicality of the equipment.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fume hood purification device, comprising a connecting plate (111), wherein a duct (112) is connected to the top of the connecting plate (111), a connecting pipe (113) is disposed above the duct (112), and an activated carbon filter layer (114) is installed inside the connecting pipe (113), characterized in that, Also includes: A pressurization unit (2), which is installed between the air duct (112) and the connecting pipe (113), is used to increase the airflow velocity inside the fume hood; and Purification unit (3), which is installed inside the connecting pipe (113), is used to filter impurities in the air and purify the air; The inner walls of the air duct (112) and the connecting pipe (113) are both smooth, and they are connected to the fume hood via the connecting plate (111) when the equipment is in use.

2. The fume hood purification device according to claim 1, characterized in that, The pressurization unit (2) includes a pressurization component (21), which is located at the bottom of the purification unit (3). The pressurization component (21) reduces the residence time of large particulate impurities in the air in the purification pipe. When the airflow speed is significantly increased, more gas can be processed in a short time, making it suitable for high-volume or sudden pollution scenarios.

3. The fume hood purification device according to claim 2, characterized in that, The purification unit (3) includes an installation assembly (31), which is connected to a connecting pipe (113) and is used to support the filter material. Quick-release assembly (32), which is installed inside the mounting assembly (31), is used for quick disassembly of the filter material; as well as Locking assembly (33), which is installed outside the mounting assembly (31), is used for quick installation of filter media; The quick-release assembly (32) and the locking assembly (33) facilitate the quick disassembly and assembly of the filter material, greatly improving work efficiency.

4. The fume hood purification device according to claim 3, characterized in that, The booster assembly (21) includes a cavity (211), a motor (212) is mounted on the front of the cavity (211), a polygonal rotating block (214) is provided inside the cavity (211), a rotating shaft (215) is connected inside the polygonal rotating block (214), the output end of the back of the cavity (211) is connected to the front of the rotating shaft (215) through a coupling, a number of connecting blocks (216) are welded to the outer ring of the polygonal rotating block (214), and a fan blade (217) is connected to each of the connecting blocks (216) through a pin. Slide rails (213) are provided on both the front and back of the inner wall of the cavity (211). Among them, the ends of several fan blades (217) away from the connecting block (216) slide inside the slide rail (213), while the outer surface of the rotating shaft (215) is rotatably connected to the inside of the cavity (211).

5. A fume hood purification device according to claim 4, characterized in that, The mounting assembly (31) includes a mounting frame (311), the top and bottom of which are welded to a connecting pipe (113). Guide frames (315) are installed on the left and right sides of the inner wall of the mounting frame (311). A filter screen (314) is provided inside the mounting frame (311), and the outer surface of the filter screen (314) is inserted into the guide frame (315). A pressure plate (312) is provided on the front of the mounting frame (311), and a sealing strip (313) is installed on the side of the pressure plate (312) near the mounting frame (311). The outer surface of the sealing strip (313) is adapted to the opening on the front of the mounting frame (311). The pressure plate (312) is U-shaped, and the side of the sealing strip (313) away from the pressure plate (312) is in contact with the front of the filter screen (314).

6. A fume hood purification device according to claim 5, characterized in that, The quick-release assembly (32) includes a baffle (322), on the side of the baffle (322) away from the filter screen (314) connected to a spring (323), on the side of the spring (323) away from the slide groove (321) connected to the back of the inner wall of the mounting frame (311), and the side of the baffle (322) away from the spring (323) in contact with the side of the filter screen (314) away from the sealing strip (313); The quick-release assembly (32) is provided in two sets. The mounting frame (311) has baffles (322) on the left and right sides of the back side. The two baffles (322) are slidably connected to the side of the slide groove (321) that is far away from each other.

7. A fume hood purification device according to claim 6, characterized in that, The locking assembly (33) includes a limiting frame (331), which is externally connected to the mounting frame (311). A fixed frame (334) is connected to the side of the limiting frame (331) away from the mounting frame (311). A limiting rod (335) is slidably connected inside the fixed frame (334). A second spring (332) is sleeved on the outer surface of the limiting rod (335). The side of the second spring (332) away from the limiting frame (331) is connected to the inner wall of the fixed frame (334). A limiting ring (337) is connected to the side of the second spring (332) away from the fixed frame (334). The inner ring of the limiting ring (337) is welded to the outer surface of the limiting rod (335). A pull button (333) is provided on the side of the fixed frame (334) away from the limiting frame (331). The locking assembly (33) is configured in two sets. The left and right sides of the pressure plate (312) are inserted into the limiting frame (331). Limiting holes (336) are opened on the left and right sides of the pressure plate (312). At the same time, the outer surfaces of the two limiting rods (335) are inserted into the limiting holes (336). The two limiting rods (335) pass through the fixed frame (334) and extend to the side away from the limiting frame (331).

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