Extended laboratory ventilation equipment
By introducing adjustable exhaust hoods and motor-driven sliding rail systems into laboratory ventilation equipment, the problem of unidirectional airflow in ventilation equipment has been solved, enabling flexible airflow path adjustment and efficient pollutant capture, thus enhancing the equipment's adaptability to complex experimental environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN JUTU NEW MATERIALS CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-21
AI Technical Summary
The exhaust vents of existing laboratory ventilation equipment are fixed at the top of the cabinet, resulting in a single airflow direction. This makes it difficult to effectively capture and expel harmful gases when the experimental operation position or the placement of items changes, which may lead to gas accumulation or overflow, endangering the health of laboratory personnel.
An extended laboratory ventilation device was designed. By installing an adjustable exhaust hood and adjustment components inside the fume hood, including vertical and horizontal slide rails and a motor-driven screw system, the exhaust hood can be automatically and precisely adjusted, ensuring flexible adjustment of the airflow path.
It enables targeted ventilation for different experimental locations, effectively preventing the spread and accumulation of harmful gases in the fume hood, improving ventilation efficiency and pollutant capture, and adapting to various experimental scenarios and changes in the placement of items.
Smart Images
Figure CN224143138U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of laboratory equipment, specifically to an extended laboratory ventilation device. Background Technology
[0002] In modern laboratory environments, waste gases generated during experiments accumulate inside the laboratory, resulting in a poor laboratory environment. Therefore, laboratory ventilation equipment is needed to exhaust the waste gases generated in the laboratory. Laboratory ventilation equipment uses various devices such as fume hoods and exhaust hoods, along with components such as fans and ducts, to form an air circulation path driven by the fan. This allows toxic and harmful gases, dust, odors, and other pollutants generated during the experiment to be discharged outdoors in a timely manner, thereby protecting laboratory personnel from harmful substances.
[0003] Existing laboratory ventilation equipment typically has its exhaust vents fixed at the top of the fume hood, resulting in a unidirectional airflow within the fume hood. When the experimental position or the placement of materials changes, it becomes difficult to confine harmful gases generated during the experiment within the fume hood and guide them to the exhaust vents for efficient pollutant capture and removal. For example, during operations requiring the placement of experimental materials in different locations within the fume hood, the fixed exhaust vents may prevent the timely removal of harmful gases from certain areas, causing localized accumulation of harmful gases within the fume hood, or even overflowing, thus endangering the health of laboratory personnel. Utility Model Content
[0004] This invention provides an extended laboratory ventilation device that solves the problem that in existing laboratory ventilation devices, the exhaust vent is usually fixed at the top of the cabinet, resulting in a single airflow direction inside the fume hood. When the experimental position or the placement of items changes, it is difficult to confine harmful gases generated during the experiment inside the fume hood and guide them to the exhaust vent, thus failing to achieve efficient pollutant capture and discharge.
[0005] An extended laboratory ventilation system includes a laboratory fume hood, an exhaust duct, and a fan. The fume hood has an exhaust port on its top. One end of the exhaust duct is connected to the exhaust port, and the other end is connected to the fan. The fume hood contains an exhaust hood and an adjustment mechanism for adjusting its position. The exhaust hood is connected to the exhaust port. The adjustment mechanism includes a vertical slide rail, a horizontal slide rail, and a movable slide. The vertical slide rail is fixedly connected to the fume hood, the horizontal slide rail is slidably connected to the vertical slide rail, and the movable slide is slidably connected to the horizontal slide rail. The exhaust hood is fixedly connected to the movable slide. A corrugated pipe is installed between the exhaust hood and the exhaust port, with one end connected to the exhaust hood and the other end connected to the exhaust port.
[0006] According to one embodiment of this utility model, a vertical slide rail has a vertical groove on its side, and a vertical slider is fixedly provided at the end of the horizontal slide rail, which is slidably connected to the vertical groove. The adjusting assembly further includes a first screw, which is rotatably disposed in the vertical groove in a vertical state, and the vertical slider has a first screw hole that is threadedly connected to the first screw. The adjusting assembly further includes a first motor, which is fixedly connected to the vertical slide rail, and the output end of the first motor is coaxially fixedly connected to the first screw.
[0007] According to one embodiment of this utility model, a horizontal slide rail has a horizontal groove on its side, and a horizontal slider is fixedly provided on the side of the movable slide block, which is slidably connected to the horizontal slide groove. The adjusting assembly further includes a second screw, which is rotatably disposed horizontally within the horizontal slide groove, and the horizontal slider has a second threaded hole that is threadedly connected to the second screw. The adjusting assembly also includes a second motor, which is fixedly connected to the horizontal slide rail, and the output end of the second motor is coaxially fixedly connected to the second screw.
[0008] According to one embodiment of the present invention, the adjusting assembly further includes a clamp, a first ear plate, a second ear plate, a screw, and a bolt. The clamp is fixedly connected to the movable slide. The first ear plate and the second ear plate are symmetrically arranged and fixedly disposed at both ends of the clamp. A first through hole is opened on the side of the first ear plate, and a second through hole is opened on the side of the second ear plate. The screw passes through the first through hole and the second through hole, and the bolt is engaged with the screw. The adjusting assembly also includes an elastic washer. The elastic washer is sleeved on the outside of the screw, and one side of the elastic washer abuts against the second ear plate, while the other side of the elastic washer abuts against the bolt.
[0009] The advantages of this utility model compared to the prior art are:
[0010] By sliding horizontal rails and movable slides, the exhaust hood can be quickly moved to the location of pollutant generation according to actual experimental needs, achieving targeted ventilation for different experimental positions. This effectively prevents harmful gases from spreading and accumulating inside the fume hood, improving ventilation efficiency and pollutant capture. It is suitable for various experimental scenarios and operating methods. Whether it's a routine or special experiment, and regardless of how the experimental materials are arranged, the ventilation requirements can be met by adjusting the position of the exhaust hood, enhancing the adaptability of the ventilation equipment to complex laboratory environments.
[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0012] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0013] Figure 1 This is a three-dimensional structural diagram of an extended laboratory ventilation device.
[0014] Figure 2 This is a three-dimensional structural cross-sectional view of the laboratory fume hood in this utility model.
[0015] Figure 3 This is a three-dimensional structural diagram of the adjustment component in this utility model.
[0016] The reference numerals in the figures include:
[0017] 1. Laboratory fume hood; 2. Exhaust vent; 3. Exhaust hood; 4. Adjustment assembly; 5. Vertical slide rail; 6. Horizontal slide rail; 7. Movable slide block; 8. Vertical slide groove; 9. Vertical slider; 10. First screw; 11. First motor; 12. Horizontal slide groove; 13. Horizontal slider; 14. Second screw; 15. Second motor; 16. Clamp; 17. First ear plate; 18. Second ear plate; 19. Screw; 20. Bolt; 21. Elastic washer; 22. Corrugated pipe. Detailed Implementation
[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.
[0019] First Embodiment
[0020] Please see Figures 1 to 3 As shown, an extended laboratory ventilation system includes a laboratory fume hood 1, an exhaust duct, and a fan. The top of the fume hood 1 has an exhaust port 2. One end of the exhaust duct is connected to the exhaust port 2, and the other end is connected to the fan. The fume hood 1 contains an exhaust hood 3 and an adjustment assembly 4 for adjusting the position of the exhaust hood 3. The exhaust hood 3 is connected to the exhaust port 2. The adjustment assembly 4 includes a vertical slide rail 5, a horizontal slide rail 6, and a movable slide block 7. The vertical slide rail 5 is fixedly connected to the fume hood 1. The horizontal slide rail 6 is slidably connected to the vertical slide rail 5. The movable slide block 7 is slidably connected to the horizontal slide rail 6. The exhaust hood 3 is fixedly connected to the movable slide block 7. A corrugated pipe 22 is provided between the exhaust hood 3 and the exhaust port 2. One end of the corrugated pipe 22 is connected to the exhaust hood 3, and the other end is connected to the exhaust port 2.
[0021] Adjusting the position of the exhaust hood 3 using component 4 allows for targeted ventilation at different experimental locations. When the experimental location or the placement of items changes, the operator can quickly move the exhaust hood 3 above the source of pollutants by sliding the horizontal rail 6 and the movable slide block 7. After the fan starts, a negative pressure zone is formed below the exhaust hood 3, rapidly drawing in harmful gases generated during the experiment and discharging them outdoors through the corrugated pipe 22, exhaust port 2, and exhaust duct. The flexible design of the corrugated pipe 22 ensures that the exhaust hood 3 remains connected to the exhaust port 2 during movement, maintaining a stable airflow path.
[0022] By sliding the horizontal slide rail 6 and the movable slide block 7, the exhaust hood 3 can be quickly moved to the location of pollutant generation according to the actual experimental needs, achieving targeted ventilation for different experimental positions. This effectively prevents harmful gases from spreading and accumulating inside the fume hood, improving ventilation efficiency and pollutant capture. It is suitable for various experimental scenarios and operating methods. Whether it is a routine or special experiment, and regardless of how the experimental materials are arranged, the ventilation requirements can be met by adjusting the position of the exhaust hood 3, greatly enhancing the adaptability of the ventilation equipment to complex laboratory environments.
[0023] Second Embodiment
[0024] Based on the first embodiment, the vertical slide rail 5 has a vertical groove 8 on its side, and the horizontal slide rail 6 has a vertical slider 9 fixedly disposed at its end, which is slidably connected to the vertical groove 8. The adjustment assembly 4 also includes a first screw 10, which is rotatably disposed in the vertical groove 8 in a vertical state, and the vertical slider 9 has a first screw hole that is threadedly connected to the first screw 10. The adjustment assembly 4 also includes a first motor 11, which is fixedly connected to the vertical slide rail 5, and the output end of the first motor 11 is coaxially fixedly connected to the first screw 10.
[0025] When it is necessary to adjust the vertical position of the horizontal slide rail 6, the first motor 11 is started, and the output end of the first motor 11 drives the first screw 10 to rotate coaxially. Since the first screw hole on the vertical slider 9 is threadedly engaged with the first screw 10, when the first screw 10 rotates, the vertical slider 9 will move up and down along the axis of the first screw 10 within the vertical slide groove 8, thereby driving the horizontal slide rail 6, which is fixedly connected to the vertical slider 9, to move up and down. By controlling the rotation direction and number of rotations of the first motor 11, the lifting height of the horizontal slide rail 6 can be precisely controlled, realizing the automated and precise adjustment of the vertical position of the exhaust hood 3.
[0026] Third Embodiment
[0027] Based on the first embodiment, the horizontal slide rail 6 has a horizontal slide groove 12 on its side, and the movable slide block 7 has a horizontal slider 13 fixedly disposed on its side, which is slidably connected to the horizontal slide groove 12. The adjustment assembly 4 also includes a second screw 14, which is rotatably disposed in the horizontal slide groove 12 in a horizontal state, and the horizontal slider 13 has a second screw hole that is threadedly connected to the second screw 14. The adjustment assembly 4 also includes a second motor 15, which is fixedly connected to the horizontal slide rail 6, and the output end of the second motor 15 is coaxially fixedly connected to the second screw 14.
[0028] When it is necessary to adjust the horizontal position of the movable slide 7, the second motor 15 is started, and the output end of the second motor 15 drives the second screw 14 to rotate coaxially. Because the second screw hole on the horizontal slider 13 is threadedly engaged with the second screw 14, when the second screw 14 rotates, the horizontal slider 13 will move left and right along the axis of the second screw 14 within the horizontal slide groove 12, thereby driving the movable slide 7, which is fixedly connected to the horizontal slider 13, to move left and right, realizing the automatic and precise adjustment of the horizontal position of the exhaust hood 3. By controlling the rotation direction and number of rotations of the second motor 15, the moving distance of the movable slide 7 can be precisely controlled, realizing the automatic and precise adjustment of the horizontal position of the exhaust hood 3.
[0029] Fourth embodiment
[0030] Based on the first embodiment, the adjusting assembly 4 further includes a clamp 16, a first ear plate 17, a second ear plate 18, a screw 19, and a bolt 20. The clamp 16 is fixedly connected to the movable slide 7. The first ear plate 17 and the second ear plate 18 are symmetrically arranged and fixedly disposed at both ends of the clamp 16. A first through hole is opened on the side of the first ear plate 17, and a second through hole is opened on the side of the second ear plate 18. The screw 19 passes through the first through hole and the second through hole, and the bolt 20 is engaged with the screw 19. The adjusting assembly 4 also includes an elastic washer 21, which is sleeved on the outside of the screw 19. One side of the elastic washer 21 abuts against the second ear plate 18, and the other side of the elastic washer 21 abuts against the bolt 20.
[0031] When installing the exhaust hood 3, place the connecting part of the exhaust hood 3 inside the clamp 16, use screws 19 to pass through the first and second through holes, and then tighten the bolts 20 in conjunction with the screws 19 to firmly fix the exhaust hood 3 inside the clamp 16. During the tightening process, the elastic washer 21 undergoes elastic deformation due to the compression of the bolt 20 and the second ear plate 18, preventing the bolt 20 from accidentally falling off. When it is necessary to disassemble or adjust the position of the exhaust hood 3, loosen the bolt 20, and the elastic washer 21 returns to its original deformation, so that the exhaust hood 3 can be easily disassembled or its position inside the clamp 16 can be adjusted.
[0032] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.
Claims
1. An extended laboratory ventilation device, comprising a laboratory fume hood (1), an exhaust duct, and a fan, wherein the top of the laboratory fume hood (1) is provided with an exhaust port (2), one end of the exhaust duct is connected to the exhaust port (2), and the other end of the exhaust duct is connected to the fan, characterized in that, The laboratory fume hood (1) is equipped with an exhaust hood (3) and an adjustment component (4) for adjusting the position of the exhaust hood (3). The exhaust hood (3) is connected to the exhaust port (2). The adjustment component (4) includes a vertical slide rail (5), a horizontal slide rail (6), and a movable slide (7). The vertical slide rail (5) is fixedly connected to the laboratory fume hood (1). The horizontal slide rail (6) is slidably connected to the vertical slide rail (5). The movable slide (7) is slidably connected to the horizontal slide rail (6). The exhaust hood (3) is fixedly connected to the movable slide (7).
2. An extended lab fume hood as in claim 1, wherein, The vertical slide rail (5) has a vertical slide groove (8) on its side, and the horizontal slide rail (6) has a vertical slider (9) fixedly installed at its end, which is slidably connected to the vertical slide groove (8).
3. An extended lab fume hood as in claim 2, wherein, The adjustment component (4) further includes a first screw (10), which is rotatably disposed in a vertical groove (8) in a vertical state, and the vertical slider (9) has a first screw hole that is threadedly connected to the first screw (10).
4. An extended fume hood laboratory apparatus as claimed in claim 3, wherein, The adjustment component (4) further includes a first motor (11), which is fixedly connected to the vertical slide rail (5), and the output end of the first motor (11) is fixedly connected to the first screw (10) on the same axis.
5. An extended lab fume hood as in claim 1, wherein, The horizontal slide rail (6) has a horizontal slide groove (12) on its side, and the movable slide block (7) has a horizontal slider (13) that is slidably connected to the horizontal slide groove (12) on its side.
6. An extended fume hood laboratory apparatus as claimed in claim 5, wherein, The adjustment assembly (4) further includes a second screw (14), which is rotatably disposed in a horizontal slide groove (12) and the horizontal slider (13) has a second screw hole that is threadedly connected to the second screw (14).
7. An extended lab fume hood as in claim 6, wherein, The adjustment assembly (4) also includes a second motor (15), which is fixedly connected to the horizontal slide rail (6), and the output end of the second motor (15) is fixedly connected to the second screw (14) on the same axis.
8. An extended lab fume hood as in claim 1, wherein, The adjustment assembly (4) further includes a clamp (16), a first ear plate (17), a second ear plate (18), a screw (19), and a bolt (20). The clamp (16) is fixedly connected to the movable slide (7). The first ear plate (17) and the second ear plate (18) are symmetrically arranged and fixedly installed at both ends of the clamp (16). The first ear plate (17) has a first through hole on its side, and the second ear plate (18) has a second through hole on its side. The screw (19) is inserted through the first through hole and the second through hole. The bolt (20) is connected to the screw (19).
9. An extended lab fume hood as in claim 8, wherein, The adjusting assembly (4) also includes an elastic washer (21), which is sleeved on the outside of the screw (19), and one side of the elastic washer (21) abuts against the second ear plate (18), and the other side of the elastic washer (21) abuts against the bolt (20).
10. An extended lab fume hood as in claim 1, wherein, The corrugated pipe (22) is arranged between the exhaust cover (3) and the air outlet (2), one end of the corrugated pipe (22) is communicated with the exhaust cover (3), and the other end of the corrugated pipe (22) is communicated with the air outlet (2).