Laboratory ventilation device

Abstract

The utility model relates to the technical field of laboratory ventilation equipment, and provides a laboratory ventilation device which comprises a suction fan, an installation assembly is arranged on the upper side of the suction fan, and during working, the working position of the suction assembly can be adjusted according to actual needs. By pulling the telescopic assemblies, the telescopic frame located on the inner side can be pulled out from the interior of the telescopic frame located on the outer side of the telescopic assembly, so that the absorption assemblies can be moved in the horizontal direction, the multiple absorption assemblies are evenly distributed on one longitudinal face, and therefore one absorption assembly can be selected to conduct translation according to actual needs; under the action of a metal hose on the absorption assembly, the working angle of a hollow frame on the absorption assembly can be adjusted, so that an exhaust inlet in the hollow frame can better suck gas with higher concentration or a gas generation source in the laboratory main body, and pollution gas is effectively prevented from being diffused in the whole laboratory main body; and the ventilation efficiency of the laboratory is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory ventilation equipment, and specifically to a laboratory ventilation device. Background Art

[0002] Due to some special needs, the laboratory has relatively high requirements for indoor air. During the experiment, the laboratory often produces some toxic and harmful gases, or a large amount of smoke is produced during the reaction process. Therefore, in order to protect the safety of the experimenters and prevent them from inhaling excessive harmful gases and causing harm to their health, we need to ventilate the laboratory frequently. The traditional way of connecting the laboratory return air vent with the air inlet of the ventilation system cannot effectively remove the toxic and harmful gases, and cannot guarantee the air quality in the laboratory. If it is directly discharged into the atmosphere, it will affect the air quality.

[0003] After searching, the existing patent (Announcement No.: CN217402759U) discloses a laboratory ventilation device, including an air suction hood plugged into the laboratory wall, and a filter mechanism is installed in the air outlet of the air suction hood; a top-blocked gas collecting pipe is installed on the laboratory wall opposite the air suction hood, and a plurality of air inlet pipes are plugged into the left and right ends of the air collecting pipe at intervals along the vertical direction, and a plurality of air inlet holes are opened on the air inlet pipe. The utility model can realize laboratory ventilation, avoid toxic and harmful gases from staying in the laboratory for a long time, and improve the air quality in the laboratory. By setting the filter mechanism, external dirty gas and dust can be prevented from entering the laboratory through the air inlet. By setting the gas filter, the air discharged from the laboratory can be filtered to avoid toxic and harmful gases from being directly discharged outdoors and polluting the environment.

[0004] However, the above scheme still has certain shortcomings. The entire structure is installed on the laboratory wall, which is far away from the actual operation position of the laboratory, and the entire device is not convenient for position adjustment. It is not possible to quickly absorb a certain point position (such as a place with high gas concentration, a gas source, a smoke source, etc.) during the experiment according to the actual working conditions. The applicability is poor, and smoke or thick gas can easily spread throughout the entire indoor space, dissipate slowly, and the ventilation efficiency is low.

[0005] In view of this, the utility model proposes a laboratory ventilation device. Utility Model Content

[0006] The utility model provides a laboratory ventilation device, which solves the problems in the related art that the existing laboratory ventilation device is fixedly installed on the laboratory wall, is inconvenient to adjust the position, and cannot quickly absorb air at a fixed position during the experiment according to the actual working situation.

[0007] The technical solution of the utility model is as follows: a laboratory ventilation device, comprising: an air suction hood plugged into a laboratory body, a filter mechanism installed in the air outlet end of the air suction hood, a gas processing mechanism and a suction fan are arranged at the bottom of the laboratory body opposite to the air suction hood, and a mounting assembly is arranged on the upper side of the suction fan;

[0008] The installation assembly includes a main pipe horizontally fixed on the laboratory body, a plurality of branch pipes are equidistantly fixed on the upper end of the main pipe, the bottom of the branch pipe is connected to the inside of the main pipe, the top of the branch pipe is in a sealed state, and each branch pipe is equidistantly opened with a plurality of openings;

[0009] A plurality of telescopic components are fixedly connected to each branch pipe, the telescopic components correspond to the through openings one by one, and the telescopic components are connected to the inside of the branch pipe through the through openings;

[0010] An absorption component is arranged at one end of the telescopic component away from the branch pipe.

[0011] Preferably, the telescopic assembly is fixedly connected to a fixing frame on the outer wall of the branch pipe, a through hole is formed at one end of the fixing frame close to the branch pipe, and a line connecting the centers of the through hole and the through opening is perpendicular to the branch pipe.

[0012] Preferably, the telescopic assembly further comprises a plurality of telescopic frames which are plugged in sequence, and the cross-sectional areas of the plurality of telescopic frames decrease in sequence in a direction away from the fixed frame.

[0013] Preferably, the inner walls of the telescopic frame and the fixed frame are both provided with a magnet layer, the outer wall of each telescopic frame close to one end of the through hole is fixed with a magnet ring, and the inner wall of each telescopic frame and the fixed frame away from the through hole is fixed with a limiting ring that cooperates with the magnet ring.

[0014] Preferably, a rubber gasket is fixed on the outer wall of the limiting ring close to the central axis thereof.

[0015] Preferably, the absorption component comprises a hollow frame, and air suction ports connected to the interior of the hollow frame are evenly distributed on one end of the hollow frame away from the telescopic frame.

[0016] Preferably, a metal hose is connected between the innermost telescopic frame and the hollow frame, and the telescopic frame is connected to the inside of the hollow frame through the metal hose.

[0017] Preferably, the suction end of the suction fan is connected to the main pipe through a suction pipe.

[0018] Preferably, the gas processing mechanism includes a first three-way valve connected to the air outlet of the suction fan and a gas filter symmetrically arranged on one side of the suction fan, the air inlet end of the gas filter is connected to the first three-way valve through a pipeline, an exhaust pipe is plugged into the laboratory body on one side of the gas filter, a second three-way valve is connected to the exhaust pipe, the air outlet of the gas filter is connected to the second three-way valve through a pipeline, solenoid valves are installed on the pipelines at both ends of the gas filter, a toxic gas sensing probe is arranged in the exhaust pipe, and a controller is installed on the laboratory body.

[0019] The working principle and beneficial effects are:

[0020] In the utility model, a mounting assembly is arranged on the upper side of the suction fan, and the mounting assembly includes a main pipe and a plurality of branch pipes fixed to the upper end of the main pipe, and a plurality of telescopic assemblies are fixedly connected to each branch pipe, and an absorption assembly is arranged at one end of the telescopic assembly away from the branch pipe. In the actual working process, the working position of the absorption assembly can be adjusted according to actual needs. During adjustment, by pulling the telescopic assembly, the inner telescopic frame can be pulled out from the inside of the telescopic frame outside it, so that the absorption assembly can be moved in the horizontal direction, and multiple absorption assemblies are evenly arranged on a longitudinal plane, so that the absorption assembly at a proper position can be selected for translation according to actual needs. After the movement is completed, the working angle of the hollow frame on the absorption assembly can be adjusted under the action of the metal hose on the absorption assembly, so that the air suction port on the hollow frame can better suck the gas with a large concentration or the gas source in the laboratory body, effectively avoiding the diffusion of polluted gas in the entire laboratory body, greatly improving the ventilation efficiency of the laboratory, simple operation, convenient adjustment, good practical performance and high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a schematic diagram of the planar structure of a laboratory ventilation device proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the gas processing mechanism structure proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the branch pipe proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the telescopic component proposed by the utility model;

[0026] Figure 5 This is a schematic diagram of the telescopic assembly structure proposed by the utility model;

[0027] Figure 6 Based Figure 1 The enlarged structural diagram at A in the middle;

[0028] In the figure: 1. Filter mechanism; 2. Suction hood; 3. Laboratory body; 4. Absorption component; 401. Suction port; 402. Hollow frame; 403. Metal hose; 5. Telescopic component; 501. Through hole; 502. Fixed frame; 503. Telescopic frame; 504. Magnetic layer; 505. Magnetic ring; 506. Rubber gasket; 507. Limiting ring; 6. Installation component; 601. Main pipe; 602. Branch pipe; 603. Through port; 7. Suction pipe; 8. Suction fan; 9. Gas treatment mechanism; 901. First three-way valve; 902. Solenoid valve; 903. Gas filter; 904. Second three-way valve; 905. Exhaust pipe; 906. Toxic gas sensor probe; 907. Controller. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 A laboratory ventilation device includes: a suction hood 2 plugged into a laboratory body 3, a filter mechanism 1 installed in the air outlet end of the suction hood 2, and the filter mechanism 1 filters the air flow absorbed by the suction hood 2 into the laboratory body 3. A gas processing mechanism 9 and a suction fan 8 are arranged at the bottom of the laboratory body 3 opposite to the suction hood 2, and an installation component 6 is arranged on the upper side of the suction fan 8.

[0031] The installation assembly 6 includes a main pipe 601 fixed horizontally on the laboratory body 3, and a plurality of branch pipes 602 are fixed equidistantly on the upper end of the main pipe 601. The bottom of the branch pipe 602 is connected to the inside of the main pipe 601, and the suction end of the suction fan 8 is connected to the main pipe 601 through the suction pipe 7. The top of the branch pipe 602 is sealed, and each branch pipe 602 is equidistantly provided with a plurality of through openings 603. Each branch pipe 602 is fixedly connected with a plurality of telescopic assemblies 5, and the telescopic assemblies 5 correspond to the through openings 603 one by one, and the telescopic assemblies 5 are connected to the inside of the branch pipe 602 through the through openings 603. An absorption assembly 4 is arranged at one end of the telescopic assembly 5 away from the branch pipe 602. The suction fan 8 is used to suck the interior of the main pipe 601, so that the main pipe 601 sucks the interior of several branch pipes 602, the internal pressure of the branch pipes 602 is reduced, and the absorption component 4 is sucked through the telescopic component 5, and the internal gas of the laboratory body 3 is sucked through the absorption component 4.

[0032] Among them, the telescopic assembly 5 is fixedly connected to the fixed frame 502 on the outer wall of the branch pipe 602, and a through hole 501 is opened at one end of the fixed frame 502 close to the branch pipe 602, and the center line of the through hole 501 and the through hole 603 is perpendicular to the branch pipe 602. The telescopic assembly 5 also includes a plurality of telescopic frames 503 plugged in sequentially, and the cross-sectional areas of the plurality of telescopic frames 503 decrease sequentially in the direction away from the fixed frame 502. A magnet layer 504 is provided on the inner wall of the telescopic frame 503 and the fixed frame 502, and a magnet ring 505 is fixed on the outer wall of each telescopic frame 503 close to the through hole 501, and a limit ring 507 matching the magnet ring 505 is fixed on the inner wall of each telescopic frame 503 and the fixed frame 502 away from the through hole 501, so that the two adjacent telescopic frames 503 inside and outside will not completely slide off. A rubber gasket 506 is fixed on the outer wall of the limit ring 507 close to the central axis thereof. Under the combined action of the magnet layer 504 and the magnet ring 505, the telescopic frame 503 can slide smoothly, and when the external force is removed, the magnet layer 504 and the magnet ring 505 are attracted to each other, so that the telescopic frame 503 can remain stable. The provision of the rubber gasket 506 ensures good sealing between the inner and outer adjacent telescopic frames 503.

[0033] See also Figure 6 The absorption assembly 4 includes a hollow frame 402, and the end of the hollow frame 402 away from the telescopic frame 503 is evenly distributed with air suction ports 401 connected to the inside of the hollow frame 402. A metal hose 403 is connected between the innermost telescopic frame 503 and the hollow frame 402, and the telescopic frame 503 is connected to the inside of the hollow frame 402 through the metal hose 403. Under the action of the metal hose 403, the working angle of the hollow frame 402 can be adjusted according to the actual working situation.

[0034] See also Figure 2 The gas processing mechanism 9 includes a first three-way valve 901 connected to the air outlet end of the suction fan 8 and a gas filter 903 symmetrically arranged on one side of the suction fan 8. The air inlet end of the gas filter 903 is connected to the first three-way valve 901 through a pipeline. An exhaust pipe 905 is plugged into the laboratory body 3 on one side of the gas filter 903, and a second three-way valve 904 is connected to the exhaust pipe 905. The air outlet end of the gas filter 903 is connected to the second three-way valve 904 through a pipeline. Solenoid valves 902 are installed on the pipelines at both ends of the gas filter 903. A toxic gas sensing probe 906 is arranged in the exhaust pipe 905, and a controller 907 is installed on the laboratory body 3. The suction fan 8 is turned on by the controller 907. When the suction fan 8 works, the gas in the laboratory body 3 is transported to a gas filter 903 through the suction pipe 7 for filtration, and then discharged from the exhaust pipe 905. The toxic gas sensing probe 906 in the exhaust pipe 905 detects the gas. When it is detected that the gas discharged from the exhaust pipe 905 is toxic, it means that the gas filter 903 needs to be replaced with a filter element. The toxic gas sensing probe 906 transmits a signal to the controller 907. The controller 907 turns on the solenoid valves 902 at both ends of another gas filter 903 and closes the solenoid valves 902 at both ends of the gas filter 903. The staff removes the gas filter 903 and replaces the filter element.

[0035] Working principle and use process: When working, the suction fan 8 is turned on by the controller 907, and the suction fan 8 works, and the suction fan 8 is used to suck the inside of the main pipe 601, so that the main pipe 601 sucks the inside of several branch pipes 602, and the pressure inside the branch pipes 602 is reduced, and the absorption component 4 is sucked through the telescopic component 5, and the gas inside the laboratory body 3 is sucked through the absorption component 4. Finally, the gas in the laboratory body 3 is transported to the gas filter 903 through the suction pipe 7 for filtration. In the actual working process, the working position of the absorption component 4 can be adjusted according to actual needs. During adjustment, by pulling and pulling several telescopic frames 503, the inner telescopic frame 503 can be pulled out from the inside of the telescopic frame 503 on its outside, so that the absorption component 4 can be moved in the horizontal direction, and multiple absorption components 4 are evenly arranged on a longitudinal plane, so that a certain absorption component 4 can be selected for translation according to actual needs. After the movement is completed, the working angle of the hollow frame 402 can be adjusted under the action of the metal hose 403, so that the air suction port 401 on the hollow frame 402 can better suck the gas with high concentration or gas source in the laboratory main body 3, effectively avoiding the diffusion of polluted gas inside the entire laboratory main body 3, and greatly improving the ventilation efficiency of the laboratory.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laboratory ventilation device, comprising: An air suction hood (2) plugged into a laboratory body (3), a filter mechanism (1) being installed in the air outlet end of the air suction hood (2), a gas processing mechanism (9) and an air suction fan (8) being arranged at the bottom of the laboratory body (3) opposite to the air suction hood (2), and characterized in that a mounting assembly (6) is arranged on the upper side of the air suction fan (8); The installation assembly (6) comprises a main pipe (601) fixed horizontally on the laboratory body (3), a plurality of branch pipes (602) are fixed equidistantly on the upper end of the main pipe (601), the bottom of the branch pipe (602) is connected to the inside of the main pipe (601), the top of the branch pipe (602) is in a sealed state, and each branch pipe (602) is provided with a plurality of openings (603) equidistantly; A plurality of telescopic components (5) are fixedly connected to each branch pipe (602), the telescopic components (5) correspond to the through openings (603) one by one, and the telescopic components (5) are connected to the inside of the branch pipe (602) through the through openings (603); An absorption component (4) is arranged at one end of the telescopic component (5) away from the branch pipe (602).

2. A laboratory ventilation device according to claim 1, characterized in that: The telescopic assembly (5) is fixedly connected to a fixed frame (502) on the outer wall of the branch pipe (602); a through hole (501) is provided at one end of the fixed frame (502) close to the branch pipe (602); a line connecting the centers of the through hole (501) and the through opening (603) is perpendicular to the branch pipe (602).

3. A laboratory ventilation device according to claim 2, characterized in that: The telescopic assembly (5) further comprises a plurality of telescopic frames (503) which are plugged in sequentially, and the cross-sectional areas of the plurality of telescopic frames (503) decrease sequentially in a direction away from the fixed frame (502).

4. A laboratory ventilation device according to claim 3, characterized in that: The inner walls of the telescopic frame (503) and the fixed frame (502) are both provided with a magnet layer (504), the outer wall of each telescopic frame (503) close to the through hole (501) is fixed with a magnet ring (505), and the inner wall of each telescopic frame (503) and the fixed frame (502) away from the through hole (501) is fixed with a limit ring (507) that matches the magnet ring (505).

5. A laboratory ventilation device according to claim 4, characterized in that: A rubber gasket (506) is fixed on the outer wall of the limiting ring (507) close to the central axis thereof.

6. A laboratory ventilation device according to claim 5, characterized in that: The absorption component (4) comprises a hollow frame (402), and air suction ports (401) which are connected to the interior of the hollow frame (402) are evenly distributed at one end of the hollow frame (402) away from the telescopic frame (503).

7. A laboratory ventilation device according to claim 1, characterized in that: A metal hose (403) is connected between the innermost telescopic frame (503) and the hollow frame (402), and the telescopic frame (503) is connected to the inside of the hollow frame (402) through the metal hose (403).

8. A laboratory ventilation device according to claim 1, characterized in that: The air suction end of the suction fan (8) is connected to the main pipe (601) via the air suction pipe (7).

9. A laboratory ventilation device according to claim 1, characterized in that: The gas processing mechanism (9) comprises a first three-way valve (901) connected to the air outlet of the suction fan (8) and a gas filter (903) symmetrically arranged on one side of the suction fan (8); the air inlet of the gas filter (903) is connected to the first three-way valve (901) through a pipeline; an exhaust pipe (905) is plugged into the laboratory body (3) on one side of the gas filter (903); a second three-way valve (904) is connected to the exhaust pipe (905); the air outlet of the gas filter (903) is connected to the second three-way valve (904) through a pipeline; solenoid valves (902) are installed on the pipelines at both ends of the gas filter (903); a toxic gas sensing probe (906) is arranged in the exhaust pipe (905); and a controller (907) is installed on the laboratory body (3).

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