Automatic window equipment of ventilation cabinet

Abstract

The utility model discloses a fume hood automatic window device which comprises a glass plate, the surface of the glass plate is fixedly connected with a window frame, the surface of the glass plate is movably connected with a fume hood body, the two sides of the window frame are fixedly connected with connecting blocks, and the inner side wall of the fume hood body is provided with vertical grooves which move with the connecting blocks. And the inner wall of the vertical groove is rotationally connected with a screw rod, and the two ends of the screw rod are fixedly connected with bearings. By arranging a connecting block and a screw, force in the transverse direction can be conveniently converted into force in the vertical direction, by arranging a horizontal bevel gear, a transmission bevel gear and a vertical bevel gear, the force in the transverse direction can be conveniently converted into force in the vertical direction, the force can be indirectly transmitted to the screw, and by arranging a protruding rod and a cleaning brush, in the window lifting process, the window can be conveniently cleaned. The back face of the glass plate rubs with the cleaning brush, stains on the back face of the window can be cleaned conveniently, and therefore the window of the ventilation cabinet has the effect of adjusting the height of an exhaust opening.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to an automatic window device for a fume hood. Background Technique

[0002] A fume hood, also known as a cabinet-type exhaust hood, is a device used for safely and efficiently discharging chemical waste gases or gases. Its basic working principle is to discharge harmful gases from inside the fume hood through the airflow generated by an exhaust fan, while preventing harmful gases from flowing back into the room. The movable window of the fume hood can manually adjust the opening height of the window of the fume hood to allow toxic and harmful gases to be discharged from the cabinet along with the fan as much as possible, reducing the harm to experimental personnel. When the fume hood is not in use, the movable door needs to be closed.

[0003] For existing fume hood devices, due to the large overall size of the window, a large amount of space is occupied during the lifting process, and the window height is not convenient to adjust. When an experimental personnel holds experimental instruments, it is impossible to manually open the lifting switch of the window, which causes inconvenience in using the device. Content of the Utility Model

[0004] The purpose of the utility model is to provide an automatic window device for a fume hood to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an automatic window device for a fume hood, including a glass plate, a window frame is fixedly connected to the surface of the glass plate, a fume hood main body is movably connected to the surface of the glass plate, connection blocks are fixedly connected to both sides of the window frame, vertical grooves for the connection blocks to move are opened on the inner side wall of the fume hood main body, a screw rod is rotatably connected to the inner wall of the vertical groove, bearings are fixedly connected to both ends of the screw rod, the outer ring of the bearing is fixedly connected to the inner wall of the vertical groove, and a vertical bevel gear is fixedly connected to the surface of the screw rod.

[0006] On the basis of the above technical solution, the utility model can also be improved as follows.

[0007] Preferably, the number of the screw rods is two, both of the two screw rods penetrate through the upper surface of the connection block and extend below the connection block, and the thread directions of the two screw rods are opposite. By setting the number of the screw rods to two, it is convenient to keep both sides stable and balanced when adjusting the height of the window, and avoid the window from tilting.

[0008] Preferably, the number of the vertical bevel gears is two, the two vertical bevel gears correspond to the two screw rods, and horizontal bevel gears are meshed with the surfaces of the two vertical bevel gears. By setting the vertical bevel gears and the horizontal bevel gears, it is convenient to transmit force to the screw rods, so that the screw rods drive the connection blocks to move, and it is convenient to lift and lower the window stably.

[0009] Preferably, a transmission rod is fixedly connected to the opposite surfaces of the two vertical bevel gears, and a transmission bevel gear is fixedly connected to the surface of the transmission rod. By providing the transmission rod and the transmission bevel gear, it is convenient to transmit the force to the horizontal bevel gears, causing the horizontal bevel gears on both sides to rotate, and simultaneously driving the screws on both sides to rotate.

[0010] Preferably, a driving bevel gear meshing with the transmission bevel gear is arranged on the back surface of the transmission rod, and a servo motor is fixedly connected to the back surface of the driving bevel gear. By providing the servo motor, it is convenient to continuously provide power for the rotation of the transmission rod and the transmission bevel gear. By providing the driving bevel gear and the transmission bevel gear, it is convenient to convert the longitudinal force into a horizontal force.

[0011] Preferably, an exhaust pipe is provided on the upper surface of the fume hood main body, a storage box is arranged on the lower surface of the fume hood main body, an experimental cavity is provided on the front surface of the fume hood main body, a protruding rod is fixedly connected to the inner top wall of the experimental cavity, and a cleaning brush is arranged on the front surface of the protruding rod. By providing the protruding rod and the cleaning brush, during the lifting and lowering process of the window, the back surface of the glass plate rubs against the cleaning brush, facilitating the cleaning of the stains on the back surface of the window and being convenient for the experimenter to use.

[0012] Advantageous Effects

[0013] Compared with the prior art, the technical solution of the present application has the following advantageous technical effects: For an automatic window device of a fume hood, by providing the connecting block and the screw, it is convenient to convert the horizontal force into a vertical force. By providing the horizontal bevel gear, the transmission bevel gear and the vertical bevel gear, it is convenient to convert the horizontal force into a vertical force and indirectly transmit the force to the screw. By providing the transmission rod, it is convenient to simultaneously rotate the horizontal bevel gears on both sides, making the forces on both sides of the window synchronous, making the movement of the window more stable. By providing the driving bevel gear and the servo motor, it is convenient to continuously provide power for the operation of each component and convert the longitudinal force into a horizontal force. By providing the protruding rod and the cleaning brush, during the lifting and lowering process of the window, the back surface of the glass plate rubs against the cleaning brush, facilitating the cleaning of the stains on the back surface of the window. Thus, the window of this fume hood has the effect of adjusting the height of the exhaust opening. Brief Description of the Drawings

[0014] Figure 1 It is a front sectional structure schematic diagram of the present utility model;

[0015] Figure 2 It is a side sectional structure schematic diagram of the present utility model;

[0016] Figure 3 It is a front view structure schematic diagram of the present utility model.

[0017] In the figure: 1. Glass plate; 2. Window frame; 3. Main body of fume hood; 4. Connecting block; 5. Vertical groove; 6. Screw rod; 7. Bearing; 8. Vertical bevel gear; 9. Horizontal bevel gear; 10. Transmission rod; 11. Transmission bevel gear; 12. Driving bevel gear; 13. Servo motor; 14. Exhaust duct; 15. Storage box; 16. Experimental chamber; 17. Protruding rod; 18. Cleaning brush. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-3 , the present invention provides a technical solution: an automatic window device for a fume hood, including a glass plate 1, a window frame 2 is fixedly connected to the surface of the glass plate 1, a main body 3 of the fume hood is movably connected to the surface of the glass plate 1, an exhaust duct 14 is opened on the upper surface of the main body 3 of the fume hood, a storage box 15 is arranged on the lower surface of the main body 3 of the fume hood, an experimental chamber 16 is arranged on the front surface of the main body 3 of the fume hood, a protruding rod 17 is fixedly connected to the inner top wall of the experimental chamber 16, and a cleaning brush 18 is arranged on the front surface of the protruding rod 17. By arranging the protruding rod 17 and the cleaning brush 18, it is convenient to make the back surface of the glass plate 1 rub against the cleaning brush 18 during the lifting and lowering of the window, so as to facilitate the cleaning of the stains on the back surface of the window.

[0020] Connecting blocks 4 are fixedly connected to both sides of the window frame 2, a vertical groove 5 for the connecting blocks 4 to move is opened on the inner side wall of the main body 3 of the fume hood, a screw rod 6 is rotatably connected to the inner wall of the vertical groove 5, the number of the screw rods 6 is two, both of the two screw rods 6 penetrate through the upper surface of the connecting block 4 and extend below the connecting block 4, and the thread directions of the two screw rods 6 are opposite. By arranging the connecting block 4 and the screw rod 6, it is convenient to convert the horizontal force into the vertical force.

[0021] Bearings 7 are fixedly connected to both ends of the screw rod 6, the outer ring of the bearing 7 is fixedly connected to the inner wall of the vertical groove 5, vertical bevel gears 8 are fixedly connected to the surface of the screw rod 6, the number of the vertical bevel gears 8 is two, the two vertical bevel gears 8 correspond to the two screw rods 6, and horizontal bevel gears 9 are meshed with the surfaces of the two vertical bevel gears 8.

[0022] The opposite surfaces of two vertical bevel gears 8 are fixedly connected with a transmission rod 10, and the surface of the transmission rod 10 is fixedly connected with a transmission bevel gear 11. By providing the horizontal bevel gear 9, the transmission bevel gear 11 and the vertical bevel gear 8, it is convenient to convert the horizontal force into the vertical force and indirectly transmit the force to the screw rod 6.

[0023] On the back of the transmission rod 10, there is a driving bevel gear 12 meshing with the transmission bevel gear 11. The back of the driving bevel gear 12 is fixedly connected with a servo motor 13, and the push button switch of the servo motor 13 is arranged on the surface of the storage box 15. By providing the driving bevel gear 12 and the servo motor 13, it is convenient to continuously provide power for the operation of each component and convert the longitudinal force into the horizontal force, so that the window of the fume hood has the effect of adjusting the height of the exhaust opening.

[0024] Working principle: When an experimenter holding experimental instruments needs to use the fume hood, use a body part to turn on the push button switch of the servo motor 13 to turn on the servo motor 13. The output shaft of the servo motor 13 drives the driving bevel gear 12 to rotate, then the transmission bevel gear 11 rotates, then the transmission rod 10 rotates, driving the horizontal bevel gears 9 at both ends of the transmission rod 10 to rotate, then the vertical bevel gear 8 rotates, driving the screw rod 6 to rotate, and when the screw rod 6 rotates, the connecting block 4 moves vertically along the screw rod 6, driving the height of the window to change, and the screw drive and the motor drive have reliable self-locking properties, so that the window of the fume hood has the effect of adjusting the height of the exhaust opening.

[0025] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic window device for a fume hood, characterized in that: It includes a glass plate (1), on the surface of which a window frame (2) is fixedly connected. On the surface of the glass plate (1), a fume hood main body (3) is movably connected. On both sides of the window frame (2), connection blocks (4) are fixedly connected. On the inner side wall of the fume hood main body (3), a vertical groove (5) for the connection block (4) to move is provided. Inside the inner wall of the vertical groove (5), a screw rod (6) is rotatably connected. At both ends of the screw rod (6), bearings (7) are fixedly connected. The outer ring of the bearing (7) is fixedly connected to the inner wall of the vertical groove (5). On the surface of the screw rod (6), a vertical bevel gear (8) is fixedly connected.

2. The automatic window device for a fume hood according to claim 1, characterized in that: The number of the screw rods (6) is two. Both of the two screw rods (6) penetrate through the upper surface of the connection block (4) and extend below the connection block (4). The thread directions of the two screw rods (6) are opposite.

3. The automatic window device of a fume hood according to claim 1, characterized in that: The number of the vertical bevel gears (8) is two. The two vertical bevel gears (8) correspond to the two screw rods (6). On the surfaces of the two vertical bevel gears (8), horizontal bevel gears (9) are engaged.

4. The automatic window device for a fume hood according to claim 1, characterized in that: On the opposite surfaces of the two vertical bevel gears (8), a transmission rod (10) is fixedly connected. On the surface of the transmission rod (10), a transmission bevel gear (11) is fixedly connected.

5. The automatic window device of a fume hood according to claim 4, characterized in that: On the back of the transmission rod (10), a driving bevel gear (12) engaged with the transmission bevel gear (11) is provided. On the back of the driving bevel gear (12), a servo motor (13) is fixedly connected.

6. The automatic window device for a fume hood according to claim 1, characterized in that: On the upper surface of the fume hood main body (3), an exhaust pipe (14) is provided. On the lower surface of the fume hood main body (3), a storage box (15) is provided. On the front surface of the fume hood main body (3), an experimental chamber (16) is provided. On the inner top wall of the experimental chamber (16), a protruding rod (17) is fixedly connected. On the front surface of the protruding rod (17), a cleaning brush (18) is provided.

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