Laboratory fume hood with position-adjustable visual window

Abstract

The utility model belongs to the technical field of laboratory fume cupboards, and particularly relates to a visual window position adjustable laboratory fume cupboard which comprises a fume cupboard body, a frame is arranged on the surface of the fume cupboard body, a window body is vertically and slidably connected to the inner side of the frame, and an adjusting mechanism is arranged in the frame. By arranging the adjusting mechanism, flexible movement of the window body in the vertical direction is achieved, the position of the visual window is easily adjusted according to experiment requirements or the height of an operator, use convenience is improved, the air bags fixedly connected to the two sides of the window body can be expanded under the action of the air conveying pump and abut against the inner walls of the limiting strips, and the air bags are not prone to falling off. Therefore, gaps between the window body and the limiting strips are effectively reduced, the sealing performance of the ventilation cabinet is enhanced, harmful gas or particles are prevented from leaking, and the safety of a laboratory is improved.

Description

Technical Field

[0001] This utility model relates to the field of laboratory fume hood technology, and in particular to a laboratory fume hood with an adjustable viewing window. Background Technology

[0002] A fume hood, also known as a fume hood or exhaust fan, is a local exhaust ventilation device used in laboratories. During various experiments in the laboratory, various harmful gases, odors, moisture, and flammable, explosive, and corrosive substances are generated. The main function of a fume hood is to exhaust these harmful gases, protect the health of laboratory personnel, prevent pollutants from spreading into the laboratory, and also help protect experimental samples and ensure the accuracy of experimental results.

[0003] Currently, when using a fume hood, the height of the viewing window needs to be adjusted according to the specific content of the experiment and the amount of harmful gases produced. By moving the viewing window up and down, the opening size of the fume hood can be flexibly adjusted to adapt to different experimental operation needs. However, in actual use, there is a certain gap between the viewing window and the cabinet body when adjusting it. When the gap is too large, harmful substances may escape through the gap, posing a health risk to the experimental personnel.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a laboratory fume hood with an adjustable viewing window. By setting an adjustment mechanism, the position of the viewing window can be easily adjusted, improving the convenience of use. The airbags fixedly connected to both sides of the window expand and abut against the inner wall of the limiting strip, thereby effectively reducing the gap between the window and the limiting strip. This not only enhances the sealing of the fume hood and prevents the leakage of harmful gases or particles, but also improves the safety of the laboratory and solves the problems mentioned in the background art.

[0006] The purpose of this utility model can be achieved through the following technical solution: a laboratory fume hood with an adjustable viewing window, including a fume hood body, a frame provided on the surface of the fume hood body, a window vertically slidably connected to the inner side of the frame, and an adjustment mechanism provided inside the frame;

[0007] The adjustment mechanism includes a limiting block fixedly connected to the window body. A screw is rotatably connected to the frame, the screw passes through the limiting block and is screwed to the limiting block. Airbags are fixedly connected to both sides of the window body. A connecting seat communicating with the airbag is fixedly connected to the side of the window body near the top. Two symmetrically arranged connection ports are opened on the surface of the connecting seat. The two connection ports are connected to an air pump and a pressure relief valve respectively through hoses.

[0008] Preferably, two limiting strips are fixedly connected to both sides of the inner wall of the frame, and the window is located between the two limiting strips on the same side and is vertically slidably connected to them.

[0009] Preferably, a storage cavity is provided on the side of the fume hood body near the bottom, and a storage box is rotatably connected to the inner wall of the storage slot of the fume hood body via a pin.

[0010] Preferably, the outer wall of the fume hood body is penetrated and slidably connected to two symmetrically arranged telescopic rods, and a storage groove is opened on the opposite side of the two telescopic rods, and a movable rod is movably connected in the storage groove.

[0011] Preferably, an air intake hood is vertically slidably connected inside the fume hood body, and an air intake pipe is connected through to the top of the fume hood body. A second connection port connected to the air intake pipe is fixedly connected to the top of the air intake pipe. A corrugated pipe is provided between the second connection port and the air intake pipe, and the two ends of the corrugated pipe are respectively connected through to the second connection port and the air intake pipe.

[0012] Preferably, two symmetrically arranged limiting rods are fixedly connected to the upper surface of the air intake hood. The two limiting rods pass through the body of the fume hood and are slidably connected to the body of the fume hood in the vertical direction. An electric push rod is fixedly installed at the top of the body of the fume hood, and the telescopic end of the electric push rod is fixedly connected to the air intake hood.

[0013] The beneficial effects of this utility model are:

[0014] (1) By setting an adjustment mechanism, this utility model realizes the flexible movement of the window in the vertical direction. According to the experimental needs or the height of the operator, the position of the viewing window can be easily adjusted, which improves the convenience of use. The airbags fixedly connected to both sides of the window can expand under the action of the air pump and abut against the inner wall of the limiting strip, thereby effectively reducing the gap between the window and the limiting strip. This not only enhances the sealing of the fume hood and prevents the leakage of harmful gases or particles, but also improves the safety of the laboratory.

[0015] (2) By adjusting the vertical position of the suction hood, the capture and removal of harmful gases generated during the experiment can be further improved, the air in the laboratory can be kept clean, the suction pipe is connected to the external air duct, and the harmful gases can be directly discharged to the outside or treated before being discharged, ensuring the continuous safety of the experimental environment. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings;

[0017] Figure 1 This utility model has a three-dimensional overall structure. Figure 1 ;

[0018] Figure 2 This utility model has a three-dimensional overall structure. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the telescopic rod structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the air intake hood structure of this utility model.

[0022] Illustration: 1. Fume hood body; 2. Frame; 3. Limiting strip; 4. Window; 5. Suction pipe; 6. Storage box; 7. Telescopic rod; 8. Storage slot; 9. Movable rod; 10. Screw; 11. Limiting block; 12. Airbag; 13. Connecting seat; 14. Connection port one; 15. Suction hood; 16. Electric push rod; 17. Limiting rod; 18. Connection port two. Detailed Implementation

[0023] 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.

[0024] Example 1: This example addresses the problem that in existing fume hoods, there is a gap between the viewing window and the hood body during adjustment. When the gap is too large, harmful substances may escape through it, posing a health risk to laboratory personnel.

[0025] Please see Figure 1 - Figure 5 As shown, this embodiment is a laboratory fume hood with an adjustable viewing window position, including a fume hood body 1, a frame 2 is provided on the surface of the fume hood body 1, a window 4 is vertically slidably connected to the inner side of the frame 2, and an adjustment mechanism is provided inside the frame 2.

[0026] The adjustment mechanism includes a limiting block 11 fixedly connected to the window 4, a screw 10 rotatably connected to the frame 2, the screw 10 passing through the limiting block 11 and screwed to the limiting block 11, a bevel gear 1 fixedly connected to the top of the limiting block 11, a motor fixedly connected to the frame 2 on one side of the top of the limiting block 11, a bevel gear 2 meshing with the bevel gear 1 fixedly connected to the output end of the motor, and a controller on the outer wall of the frame 2 to control the motor to start, thereby driving the screw 10 to rotate in both directions, and adjusting the window 4 to move in the vertical direction;

[0027] Airbags 12 are fixedly connected to both sides of the window 4. A connecting seat 13 communicating with the airbags 12 is fixedly connected to the side of the window 4 near the top. Two symmetrically arranged connecting ports 14 are opened on the surface of the connecting seat 13. The two connecting ports 14 are connected to the air pump and the pressure relief valve respectively through hoses.

[0028] A programmable logic controller (PLC) receives sensor signals and controls the opening and closing of the air pump and pressure relief valve. When the window is raised and lowered to its final position, the controller receives a signal, such as a button press or sensor trigger, and controls the air pump to start, inflating the airbag 12. The sensor monitors the air pressure inside the airbag 12 in real time. When the air pressure reaches the preset target value, the controller controls the air pump to stop working. When the window needs to be raised and lowered again, the controller receives a stop signal, such as a button press or sensor trigger, and controls the pressure relief valve to open, allowing the gas inside the airbag 12 to be released. The sensor monitors the air pressure inside the airbag 12 in real time. When the air pressure drops to the preset pressure relief value, the controller controls the pressure relief valve to close, and the air pump delivers gas to the airbag 12. This allows the airbag 12 to expand and abut against the inner wall of the limiting strip 3, reducing the gap between the window 4 and the limiting strip 3, enhancing the sealing of the fume hood, preventing the leakage of harmful gases or particles, and improving the safety of the laboratory.

[0029] Two limiting strips 3 are fixedly connected to both sides of the inner wall of frame 2. Window 4 is located between the two limiting strips 3 on the same side and is vertically slidably connected to them. The two limiting strips 3 limit the vertical direction of window 4 to ensure that window 4 moves stably in the vertical direction.

[0030] A storage cavity is provided on one side of the fume hood body 1 near the bottom. A storage box 6 is rotatably connected to the inner wall of the storage slot of the fume hood body 1 via a pin. The storage cavity is used to store the equipment required for the experiment.

[0031] The outer wall of the fume hood body 1 is penetrated and slidably connected to two symmetrically arranged telescopic rods 7. A storage groove 8 is opened on the opposite side of the two telescopic rods 7. A movable rod 9 is movably connected in the storage groove 8. The movable rod 9 is rotatably connected to the inner wall of the storage groove 8 through a pivot.

[0032] Example 2: This example is used to solve the problem of how to improve the capture and removal of harmful gases generated during the experiment.

[0033] Please see Figure 1 - Figure 5As shown in the figure, this embodiment of a laboratory fume hood with adjustable viewing window position has an air intake hood 15 vertically slidably connected inside the fume hood body 1. An air intake pipe 5 is connected through the top of the fume hood body 1 and is connected to an external air duct. The air is discharged to the outside through the air duct or discharged after treatment, thereby keeping the air in the laboratory clean. The top of the air intake pipe 5 is fixedly connected to a second connection port 18 that communicates with the air intake pipe 5. A corrugated pipe is provided between the second connection port 18 and the air intake pipe 5. The two ends of the corrugated pipe are respectively connected through the second connection port 18 and the air intake pipe 5, which allows the air intake hood 15 to move in the vertical direction and reduces interference during movement.

[0034] Two symmetrically arranged limiting rods 17 are fixedly connected to the upper surface of the fume hood 15. The two limiting rods 17 pass through the fume hood body 1 and are slidably connected to the fume hood body 1 in the vertical direction. An electric push rod 16 is fixedly installed at the top of the fume hood body 1. The telescopic end of the electric push rod 16 is fixedly connected to the fume hood 15. When the electric push rod 16 is activated, the fume hood 15 is pushed to a vertical position inside the fume hood body 1, which can make it closer to the experimental source, thereby more effectively absorbing and removing harmful gases and ensuring the safety of the experimental environment.

[0035] Combining Example 1 and Example 2

[0036] By setting an adjustment mechanism, the window 4 can be moved flexibly in the vertical direction. The position of the viewing window can be easily adjusted according to experimental needs or the height of the operator, improving the convenience of use. The airbags 12 fixedly connected to both sides of the window 4 can expand under the action of the air pump and abut against the inner wall of the limiting strip 3, thereby effectively reducing the gap between the window 4 and the limiting strip 3. This not only enhances the sealing of the fume hood and prevents the leakage of harmful gases or particles, but also improves the safety of the laboratory. By adjusting the vertical position of the suction hood 15, the capture and removal of harmful gases generated during the experiment can be further improved, keeping the air in the laboratory clean. The suction pipe 5 is connected to the external air duct, so harmful gases can be directly discharged to the outside or treated before being discharged, ensuring the continuous safety of the experimental environment.

[0037] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0038] 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 invention. In this specification, 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.

[0039] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. 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 invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fume hood with adjustable visual window position, comprising a fume hood body (1), characterized in that, The surface of the fume chamber body (1) is provided with a frame (2), the inner side of the frame (2) is vertically and slidingly connected with a window body (4), and the frame (2) is provided with an adjusting mechanism; The adjusting mechanism comprises a limiting block (11) fixedly connected with the window body (4), a screw rod (10) rotationally connected in the frame (2), the screw rod (10) penetrating through and screwing with the limiting block (11), air bags (12) fixedly connected on the two sides of the window body (4), a connecting seat (13) fixedly connected on the side of the window body (4) close to the top and communicating with the air bags (12), and two symmetrical connecting ports (14) formed in the surface of the connecting seat (13), wherein the two connecting ports (14) are respectively connected with a gas conveying pump and a pressure relief valve through a hose.

2. A fume hood according to claim 1, wherein, The two limiting strips (3) are fixedly connected on the inner wall of the frame (2), and the window body (4) is located between the two limiting strips (3) on the same side and is vertically and slidingly connected with the limiting strips (3).

3. The fume hood of claim 1 wherein, The fume chamber body (1) is provided with a storage cavity on the side close to the bottom, and a receiving box (6) is rotationally connected on the inner wall of the storage cavity of the fume chamber body (1) through a pin shaft.

4. The fume hood of claim 1 wherein, The outer wall of the fume chamber body (1) is penetrated and slidingly connected with two symmetrical telescopic rods (7), the opposite sides of the two telescopic rods (7) are provided with receiving grooves (8), and the receiving grooves (8) are movably connected with movable rods (9).

5. The fume hood of claim 1 wherein, The fume chamber body (1) is vertically and slidingly connected with an air suction cover (15), the fume chamber body (1) is throughly connected with an air suction pipe (5) at the top, the air suction pipe (5) is fixedly connected with a connecting port (18) communicating with the air suction pipe (5), a corrugated pipe is arranged between the connecting port (18) and the air suction pipe (5), and the two ends of the corrugated pipe are throughly connected with the connecting port (18) and the air suction pipe (5).

6. A fume hood according to claim 5, wherein, The upper surface of the air suction cover (15) is fixedly connected with two symmetrical limiting rods (17), the two limiting rods (17) penetrate through the fume chamber body (1) and are vertically and slidingly connected with the fume chamber body (1), the fume chamber body (1) is fixedly installed with an electric push rod (16) at the top, and the telescopic end of the electric push rod (16) is fixedly connected with the air suction cover (15).

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