High-efficiency laboratory fume hood

Abstract

The utility model discloses a high-efficiency laboratory fume hood, which relates to the field of laboratory fume hoods, and comprises a fume hood main body, an exhaust pipe is arranged at the top of the fume hood main body, a pop-up component is arranged in the exhaust pipe, and the pop-up component comprises a threaded ring and a movable ring which are sleeved on the outer wall of the exhaust pipe. By arranging the pop-up assembly, when the air filter element needs to be replaced, a worker can rotate a threaded ring to enable the threaded ring to move upwards and then drive a movable ring to move upwards, when the movable ring moves upwards, the movable ring can drive a push plate to rotate, the push plate pushes a sliding base to slide in a sliding groove, and then the sliding base drives a baffle to move; when the air filter element needs to be replaced, the baffle does not limit the air filter element any more, at the moment, the spring rod extends to push the sealing ring to move upwards, the sealing ring pushes the air filter element to move upwards, then a worker can take out the air filter element so as to replace the air filter element, the air filter element can be replaced in the mode, and blockage caused by the fact that the air filter element is used all the time is avoided.

Description

Technical Field

[0001] This utility model relates to the field of laboratory fume hoods, specifically a high-efficiency laboratory fume hood. Background Technology

[0002] Fume hoods are an indispensable component of laboratory ventilation design. They ensure that all kinds of waste gases and fumes generated during experiments are fully discharged to the outside or to a waste gas treatment tower, so as to reduce or even avoid damage to the human body. Therefore, they are widely used in hospitals, schools and various research institutes.

[0003] According to Chinese Patent No. CN221639021U, a laboratory fume hood is disclosed. The adjustment component of this utility model can adjust the horizontal and vertical movement of the cleaning component. Then, the servo motor of the cleaning component can adjust the orientation of the sponge brush or bristle brush. Thus, the cleaning component can be controlled through the sealed window to clean chemical waste in conjunction with the adjustment component, avoiding secondary exhaust of irritating gases.

[0004] Regarding the aforementioned patent content, an air filter is installed to filter the exhaust gas. However, after a long period of filtration, dust or impurities will accumulate in the air filter. Therefore, in order to avoid further filtration of the air, the air filter needs to be replaced. However, the air filter is installed inside the exhaust pipe, which makes it inconvenient for staff to remove it, thereby reducing the efficiency of disassembling and replacing the air filter. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a high-efficiency laboratory fume hood to solve the technical problem of inconvenience in disassembling and replacing air filters.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency laboratory fume hood, comprising a fume hood body, an exhaust pipe installed on the top of the fume hood body, an ejector assembly provided inside the exhaust pipe, and the ejector assembly including a threaded ring and a movable ring sleeved on the outer wall of the exhaust pipe, a fixed ring installed above the outer wall of the exhaust pipe, and a gasket fixed inside the exhaust pipe, the top of the gasket being equipped with multiple spring rods, and the top ends of the multiple spring rods being connected to a sealing ring, the top of the fixed ring being provided with four sliding grooves, and each of the four sliding grooves being provided with a sliding seat, the top of the sliding seat being fixed with a baffle, the bottom of the movable ring being provided with an annular groove, and the inside of the annular groove being provided with multiple movable blocks, the bottom of the movable blocks being fixedly connected to the top of the threaded ring, and a push plate being connected between the movable ring and the sliding seat via a rotating shaft.

[0007] By adopting the above technical solution, when the movable ring moves, it will drive the push plate to rotate, and the push plate will push the slide block to slide inside the slide groove, and the slide block will then drive the baffle to move.

[0008] Furthermore, an air filter element is inserted into the upper part of the exhaust pipe, with the bottom of the air filter element contacting the sealing ring and the top of the air filter element contacting the baffle.

[0009] By adopting the above technical solution, the air filter element can filter the gas, and the baffle can limit the air filter element to prevent it from moving out of the exhaust pipe at will.

[0010] Furthermore, an exhaust fan is installed inside the exhaust pipe, and the exhaust fan is located below the air filter.

[0011] By adopting the above technical solution, when exhaust is required, the exhaust fan can be started. The operation of the exhaust fan can accelerate the circulation speed of the surrounding air and allow the gas inside the fume hood to enter the exhaust pipe and then be discharged through the exhaust pipe.

[0012] Furthermore, a workbench is installed inside the main body of the fume hood, and an exhaust hood is installed on the upper part of the main body of the fume hood, with a filter screen at the bottom of the exhaust hood.

[0013] By adopting the above technical solution, the filter can perform preliminary filtration of the gas inside the fume hood.

[0014] Furthermore, a sealing cover is installed above the outer surface of the fume hood body, and electric slides are installed on both sides of the outer surface of the fume hood body, with sliding plates mounted on the electric slides.

[0015] By adopting the above technical solution, when the viewing window needs to be moved upward, the electric slide can drive the slide plate to move, and then drive the viewing window to move.

[0016] Furthermore, a lifting plate is installed between the two skateboards, and a viewing window is installed on the top of the lifting plate.

[0017] By adopting the above technical solution, when the skateboard moves, it will drive the lifting plate to move, and the movement of the lifting plate will drive the viewing window to move, thereby adjusting the position of the viewing window.

[0018] Furthermore, the baffle is slidably connected to the slide groove via a slide block.

[0019] By adopting the above technical solution, when the slide block slides inside the slide groove, it will drive the baffle to move so as to adjust the position of the baffle.

[0020] Furthermore, the outer wall of the exhaust pipe is provided with threads, and the threaded ring is threadedly connected to the exhaust pipe.

[0021] By adopting the above technical solution, the threaded ring can be moved on the exhaust pipe when the staff rotates it.

[0022] Furthermore, the movable block is slidably connected to the movable groove, and the movable ring is located above the threaded ring.

[0023] By adopting the above technical solution, when the threaded ring rotates, it will drive the movable block to slide inside the movable groove, and the threaded ring will also move when it rotates.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model features a pop-out component. When the air filter needs to be replaced, the operator can rotate the threaded ring, causing it to move upwards. This, in turn, moves the movable ring upwards. As the movable ring moves upwards, it drives the push plate to rotate. The push plate then pushes the slide block to slide inside the slide groove. The slide block then moves the baffle, so that the baffle no longer limits the air filter. At this time, the spring rod extends and pushes the sealing ring upwards. The sealing ring then pushes the air filter upwards, allowing the operator to remove the air filter for replacement. This method of air filter replacement avoids clogging caused by continuous use, which affects the subsequent air filtration effect. Moreover, this replacement method is simple and convenient, thereby improving the efficiency of air filter disassembly and replacement.

[0026] 2. This utility model is equipped with a movable block and an annular groove. When the threaded ring rotates, it will move on the exhaust pipe, and at the same time, it will drive the movable block to slide inside the annular groove, and drive the movable ring to move, so as to quickly adjust the position of the movable ring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the main structure of the fume hood of this utility model;

[0029] Figure 3 This is a schematic diagram of the overall orthographic structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the viewing window structure of this utility model from a downward angle;

[0031] Figure 5 This is a schematic diagram of the fixing ring structure of this utility model;

[0032] Figure 6 This is a bottom view schematic diagram of the threaded ring structure of this utility model;

[0033] Figure 7 For the present utility model Figure 2 A magnified structural diagram of point A in the middle.

[0034] In the diagram: 1. Fume hood body; 2. Workbench; 3. Exhaust hood; 4. Electric slide; 5. Slide plate; 6. Lifting plate; 7. Viewing window; 8. Sealing cover; 9. Pop-up assembly; 901. Threaded ring; 902. Fixed ring; 903. Slide groove; 904. Slide seat; 905. Baffle; 906. Push plate; 907. Movable ring; 908. Movable block; 909. Annular groove; 910. Washer ring; 911. Spring rod; 912. Sealing ring; 10. Exhaust pipe; 11. Exhaust fan; 12. Air filter element; 13. Filter screen. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of this utility model will be described below based on its overall structure.

[0037] Example 1:

[0038] A high-efficiency laboratory fume hood, such as Figures 1-7 As shown, the fume hood includes a main body 1. An exhaust pipe 10 is installed on the top of the fume hood main body 1. An exhaust fan 11 is also installed inside the exhaust pipe 10. When exhaust is required, the exhaust fan 11 can be activated. The operation of the exhaust fan 11 can accelerate the circulation speed of the surrounding air and allow the gas inside the fume hood main body 1 to enter the exhaust pipe 10 and then be discharged through the exhaust pipe 10. The exhaust pipe 10 is provided with a pop-out component 9. The pop-out component 9 includes a threaded ring 901 and a movable ring 907 sleeved on the outer wall of the exhaust pipe 10, a fixed ring 902 installed on the upper part of the outer wall of the exhaust pipe 10, and a gasket 910 fixed inside the exhaust pipe 10. Multiple spring rods 911 are installed on the top of the gasket 910, and a sealing ring 912 is connected to the top of the multiple spring rods 911. The top of the fixed ring 902 is provided with four sliding grooves 903, and each of the four sliding grooves 903 is provided with a sliding seat 904. A baffle 905 is fixed on the top of the sliding seat 904.

[0039] See Figures 2-7The bottom of the movable ring 907 has an annular groove 909, and multiple movable blocks 908 are arranged inside the annular groove 909. The bottom of the movable blocks 908 is fixedly connected to the top of the threaded ring 901. A push plate 906 is connected between the movable ring 907 and the slide block 904 through a rotating shaft. When the movable ring 907 moves, it will drive the push plate 906 to rotate. The push plate 906 will then push the slide block 904 to slide inside the slide groove 903. The slide block 904 will then drive the baffle 905 to move. The baffle 905 is slidably connected to the slide groove 903 through the slide block 904. When the slide block 904 slides inside the slide groove 903, it will drive the baffle 905 to move. 05 can be moved to adjust the position of the baffle 905. The outer wall of the exhaust pipe 10 is provided with threads, and the threaded ring 901 is threadedly connected to the exhaust pipe 10, so that the threaded ring 901 can move on the exhaust pipe 10 when the operator rotates it. The movable block 908 is slidably connected to the annular groove 909. The movable ring 907 is located above the threaded ring 901. When the threaded ring 901 rotates, it will drive the movable block 908 to slide inside the annular groove 909, and the threaded ring 901 will also move when it rotates. The outer wall of the threaded ring 901 is equipped with multiple anti-slip protrusions to facilitate the operator to rotate the threaded ring 901.

[0040] Specifically, a workbench 2 is installed inside the fume hood body 1. An exhaust hood 3 is installed on the upper part of the fume hood body 1, and a filter screen 13 is installed at the bottom of the exhaust hood 3. The filter screen 13 can perform preliminary filtration of the gas inside the fume hood body 1. A sealing cover 8 is installed on the upper part of the outer surface of the fume hood body 1. The sealing cover 8 has a storage opening for storing the viewing window 7. Electric slides 4 are installed on both sides of the outer surface of the fume hood body 1, and sliding plates 5 are mounted on the electric slides 4. When the viewing window 7 needs to be moved up, the electric slides 4 can move the sliding plates 5, which in turn can move the viewing window 7. A lifting plate 6 is installed between the two sliding plates 5. The viewing window 7 is installed on the top of the lifting plate 6. When the sliding plates 5 move, they will move the lifting plate 6, and the lifting plate 6 will move the viewing window 7, thereby adjusting the position of the viewing window 7.

[0041] Example 2:

[0042] Based on the above embodiment 1, in order to improve the filtration effect of the gas discharged from the fume hood body 1, the following structure will be set.

[0043] See Figures 1-5 An air filter 12 is inserted into the upper part of the exhaust pipe 10. The bottom of the air filter 12 contacts the sealing ring 912, and the top of the air filter 12 contacts the baffle 905. The air filter 12 can filter the gas, and the baffle 905 can limit the air filter 12 to prevent it from moving out of the exhaust pipe 10 at will. The exhaust fan 11 is located below the air filter 12.

[0044] The working principle of this utility model is as follows: First, before using the fume hood, the power is turned on. When using it, the electric slide table 4 is started, which moves the slide plate 5. The slide plate 5 then moves the lifting plate 6, which in turn moves the viewing window 7 upward, so that the viewing window 7 moves into the sealing cover 8. Then, the staff can put their hands into the fume hood body 1 to carry out the operation experiment. At the same time, the staff starts the exhaust fan 11 to draw out the gas inside the fume hood body 1. The gas is filtered by the filter screen 13 and then enters the exhaust pipe 10 through the air extraction cover 3. After being filtered by the air filter element 12, it is discharged, thereby improving the filtration efficiency of the gas.

[0045] When the air filter element 12 needs to be replaced, the operator can rotate the threaded ring 901, causing it to move upwards. This, in turn, moves the movable ring 907 upwards. The upward movement of the movable ring 907 causes the push plate 906 to rotate, which in turn pushes the slide block 904 to slide within the slide groove 903. The slide block 904 then moves the baffle 905, removing it from its position and allowing the baffle 905 to no longer restrict the air filter element 12. At this point, the spring rod 911 extends, pushing the sealing ring 912 upwards. The sealing ring 912 then pushes the air filter element 12 upwards, allowing the operator to remove the air filter element 12 for replacement. The new air filter element is then installed... When the air filter element 12 is inserted into the exhaust pipe 10, it pushes the sealing ring 912 downward and compresses the spring rod 911, causing the spring rod 911 to contract. When the top of the air filter element 12 is flush with the top of the exhaust pipe 10, the operator rotates the threaded ring 901 in the opposite direction, causing the threaded ring 901 to move downward and drive the movable ring 907 downward. Then, the push plate 906 is pulled to rotate, which in turn drives the slide 904 to move and drives the baffle 905 to move, so that the baffle 905 contacts the top of the air filter element 12. This limits the position of the air filter element 12 and completes the installation of the air filter element 12.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high performance fume hood for laboratories, comprising a fume hood body (1), characterized in that: An exhaust pipe (10) is installed on the top of the fume hood body (1). An ejector assembly (9) is provided inside the exhaust pipe (10). The ejector assembly (9) includes a threaded ring (901) and a movable ring (907) fitted onto the outer wall of the exhaust pipe (10), a fixed ring (902) installed above the outer wall of the exhaust pipe (10), and a gasket (910) fixed inside the exhaust pipe (10). Multiple spring rods (911) are installed on the top of the gasket (910), and sealing rings (912) are connected to the top ends of the multiple spring rods (911). The top of the fixed ring (902) is provided with four sliding grooves (903), and each of the four sliding grooves (903) is provided with a sliding seat (904). The top of the sliding seat (904) is fixed with a baffle (905). The bottom of the movable ring (907) is provided with an annular groove (909), and the annular groove (909) is provided with multiple movable blocks (908). The bottom of the movable block (908) is fixedly connected to the top of the threaded ring (901). The movable ring (907) and the sliding seat (904) are connected by a push plate (906) through a rotating shaft.

2. A high performance fume hood according to claim 1, wherein: An air filter (12) is inserted into the upper part of the exhaust pipe (10). The bottom of the air filter (12) is in contact with the sealing ring (912), and the top of the air filter (12) is in contact with the baffle (905).

3. A high performance fume hood according to claim 2, wherein: An exhaust fan (11) is also installed inside the exhaust pipe (10), and the exhaust fan (11) is located below the air filter (12).

4. A high performance fume hood according to claim 1, wherein: The fume hood body (1) is equipped with a workbench (2) inside, and an exhaust hood (3) is installed on the upper part of the fume hood body (1), and a filter screen (13) is provided at the bottom of the exhaust hood (3).

5. A high performance fume hood according to claim 1, wherein: A sealing cover (8) is installed on the upper surface of the fume hood body (1), and electric slides (4) are installed on both sides of the outer surface of the fume hood body (1), and a sliding plate (5) is provided on the electric slides (4).

6. A high performance fume hood according to claim 5, wherein: A lifting plate (6) is installed between the two sliding plates (5), and a viewing window (7) is installed on the top of the lifting plate (6).

7. A high performance fume hood according to claim 1, wherein: The baffle (905) is slidably connected to the slide groove (903) via the slide block (904).

8. A high performance fume hood according to claim 1, wherein: The exhaust pipe (10) has a thread on its outer wall, and the threaded ring (901) is threadedly connected to the exhaust pipe (10).

9. A high performance fume hood according to claim 1, wherein: The exhaust pipe (10) has a thread on its outer wall, and the threaded ring (901) is threadedly connected to the exhaust pipe (10).

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