Fireproof assembly of laboratory fume hood

Abstract

The utility model discloses a laboratory fume cupboard fireproof assembly which comprises a fume cupboard body, a control panel and two cupboard doors arranged at an opening of the fume cupboard body, and a fireproof fire extinguishing assembly used for fire prevention is arranged in the fume cupboard body. The fireproof fire extinguishing assembly comprises a water storage tank body arranged at the top end of the ventilation cabinet body, a rotating shaft is arranged at the top end of the ventilation cabinet body, torsional springs are arranged at the joints of the two ends of the rotating shaft and the ventilation cabinet body, a rotating disc is arranged on the rotating shaft, and at least two stirring teeth are arranged on the outer wall of the rotating disc. Driving teeth matched with the stirring teeth are arranged in the ventilation cabinet body through a rotating shaft, and a first gear motor for driving the rotating shaft to rotate is installed on the ventilation cabinet body. When the interior of the ventilation cabinet body is on fire, open fire in the ventilation cabinet body can be quickly extinguished through the fireproof fire extinguishing assembly, the situation that the fire behavior of the open fire spreads and becomes large, and the body health of workers is harmed is avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory ventilation, in particular to a fire protection component of a laboratory fume hood. Background Art

[0002] Cabinet-type exhaust hoods, commonly known as fume hoods, are similar to closed hoods. Typical examples of cabinet-type exhaust hoods include small parts spray booths and chemical laboratory fume hoods. Some fume hoods are used in chemical experiments, allowing workers to conduct flammable and explosive chemical experiments.

[0003] When conducting chemical experiments in existing laboratory fume hoods, if an open flame occurs, the staff usually opens the door of the fume hood and then uses a handheld fire extinguisher to extinguish the fire inside the cabinet. However, if the fire is too fierce, the flames can easily burst out from the inside of the cabinet. Opening the door not only endangers the personal safety of the staff, but also easily causes the fire to spread and expand, reducing safety. Utility Model Content

[0004] In order to solve the defects of the prior art, the utility model provides a laboratory fume hood fire protection component.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The utility model discloses a fire prevention assembly of a laboratory fume hood, comprising a fume hood body and a control panel, and two cabinet doors arranged at the opening of the fume hood body, wherein the interior of the fume hood body is provided with a fire prevention and fire extinguishing assembly for fire prevention; the fire prevention and fire extinguishing assembly comprises a water storage tank body arranged at the top of the fume hood body, the top portion of the fume hood body is provided with a rotating shaft, the two end portions of the rotating shaft are provided with torsion springs at the connection between the fume hood body and the two end portions, one end of the rotating shaft is provided with a driving gear, the interior of the fume hood body is connected to a toggle disk via the rotating shaft, the outside of the toggle disk is provided with a toggle tooth adapted to the driving gear, and a first reduction motor for driving the toggle disk to rotate is installed on the fume hood body; the bottom end of the water storage tank body is provided with a water outlet soft main pipe passing through the top wall of the fume hood body, the bottom end of the water outlet soft main pipe is connected with a water outlet branch pipe, a plurality of high-pressure atomizing nozzles facing downward are equidistantly provided on the water outlet branch pipe, an electromagnetic valve is installed on the water outlet soft main pipe, and the first reduction motor and the electromagnetic valve are both electrically connected to the control panel.

[0007] As a preferred technical solution of the present invention, a water supply connecting pipe is provided at the top of the fume hood body, and a cover plate is threadedly connected to the top of the water supply connecting pipe.

[0008] As a preferred technical solution of the present invention, the cabinet door is connected to the opening of the ventilation cabinet body via a rotating shaft.

[0009] As a preferred technical solution of the present invention, a second reduction motor for driving the cabinet door to rotate is installed on the ventilation cabinet body, and the second reduction motor is electrically connected to the control panel.

[0010] As a preferred technical solution of the present invention, a camera is installed on one side of the interior of the fume hood, and an inner wall of the fume hood is provided with a transparent cover covering the outside of the camera.

[0011] As a preferred technical solution of the present invention, a funnel-shaped drain hopper is provided at the bottom end of the fume hood body, a drain pipe is provided at the bottom end of the drain hopper, and a control valve is provided on the drain pipe.

[0012] As a preferred technical solution of the present invention, a horizontal cover plate covering the top of the drainage hopper is provided at the bottom end of the fume hood, and a plurality of drainage holes are opened on the horizontal cover plate.

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

[0014] This type of laboratory fume hood fire protection component can quickly extinguish the open fire inside the fume hood using the fire protection and extinguishing component when a fire occurs inside the fume hood, thereby avoiding the spread of the open fire and causing harm to the health of the staff, and improving safety. Among them, the control panel controls the solenoid valve to open, and the high-pressure atomizing nozzle sprays water mist from top to bottom to extinguish the fire. The output shaft of the first reduction motor then drives the toggle plate to rotate, and the toggle teeth on the toggle plate engage with the drive gear to rotate the drive gear, which drives the rotating shaft to rotate, and the rotating shaft drives the water outlet branch pipe to rotate. When the toggle teeth separate from the drive gear during rotation, the rotating shaft is reversed under the action of the torsion spring, so that the water outlet branch pipe drives multiple high-pressure atomizing nozzles to swing back and forth, thereby achieving a better fire extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic structural diagram of a fire protection assembly for a laboratory fume hood according to the present invention;

[0017] Figure 2 This is a cross-sectional view of the fire protection and extinguishing component structure of a laboratory fume hood fire protection component of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the driving gear and the toggle gear of a fire protection component of a laboratory fume hood in the utility model;

[0019] Figure 4The utility model is a cross-sectional view of the liquid drain hopper structure of a fire protection component of a laboratory fume hood.

[0020] In the figure: 1. Ventilation cabinet body; 2. Control panel; 3. Cabinet door; 4. Fire prevention and extinguishing assembly; 401. Water storage tank body; 402. Rotating shaft; 403. Driving gear; 404. Toggle plate; 405. Toggle gear; 406. First reduction motor; 407. Water outlet hose; 408. Water outlet branch pipe; 409. High-pressure atomizing nozzle; 4010. Solenoid valve; 4011. Water supply pipe; 4012. Cover plate; 5. Second reduction motor; 6. Camera; 7. Transparent cover; 8. Drain bucket; 9. Drain pipe; 10. Control valve; 11. Horizontal cover plate; 12. Drain hole. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0022] Example: Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the utility model is a laboratory fume hood fire protection assembly, comprising a fume hood body 1 and a control panel 2, as well as two cabinet doors 3 provided at the opening of the fume hood body 1, the interior of the fume hood body 1 is provided with a fire prevention and fire extinguishing assembly 4 for fire prevention; the fire prevention and fire extinguishing assembly 4 comprises a water storage tank body 401 provided at the top of the fume hood body 1, the top portion of the fume hood body 1 is provided with a rotating shaft 402, the two ends of the rotating shaft 402 are connected to the fume hood body 1 with a torsion spring, one end of the rotating shaft 402 is A driving gear 403 is provided, and a toggle plate 404 is connected to the interior of the fume hood 1 via a rotating shaft. A toggle tooth 405 is provided on the outside of the toggle plate 404 to match the driving gear 403. A first reduction motor 406 for driving the toggle plate 404 is installed on the fume hood 1; the bottom end of the water storage tank 401 is provided with a water outlet hose 407 passing through the top wall of the fume hood 1, and the bottom end of the water outlet hose 407 is connected to a water outlet branch pipe 408, and the water outlet branch pipe 408 is equidistantly provided with multiple directional The high-pressure atomizing nozzle 409 below and the water outlet soft pipe 407 are equipped with an electromagnetic valve 4010. The first reduction motor 406 and the electromagnetic valve 4010 are electrically connected to the control panel 2. When a fire occurs inside the fume hood 1, the fire extinguishing component can be used to quickly extinguish the open fire inside the fume hood 1, avoiding the spread of the open fire and causing harm to the health of the staff, thereby improving safety; wherein, the control panel controls the solenoid valve to open, and the high-pressure atomizing nozzle sprays water mist from top to bottom to extinguish the fire, and then the output shaft of the first reduction motor drives the toggle plate to rotate, and the toggle teeth on the toggle plate engage with the drive gear to rotate the drive gear, which drives the rotating shaft to rotate, and the rotating shaft drives the water outlet branch pipe to rotate. When the toggle teeth are separated from the drive gear during rotation, the rotating shaft is reversed under the action of the torsion spring, so that the water outlet branch pipe drives multiple high-pressure atomizing nozzles to swing back and forth, thereby making the fire extinguishing effect better.

[0023] A water adding pipe 4011 is provided at the top of the fume hood body 1 , and a cover plate 4012 is threadedly connected to the top of the water adding pipe 4011 . When the cover plate 4012 is opened, water can be added from the water adding pipe 4011 .

[0024] Among them, the cabinet door 3 is connected to the opening of the fume hood body 1 via a rotating shaft. A second reduction motor 5 is installed on the fume hood body 1 to drive the cabinet door 3 to rotate. The second reduction motor 5 is electrically connected to the control panel 2. When an open fire occurs inside the fume hood body 1, the output shaft of the second reduction motor 5 drives the cabinet door 3 to rotate so that the cabinet door 3 is closed.

[0025] Among them, a camera 6 is installed on one side of the interior of the fume hood body 1, and the inner wall of the fume hood body 1 is provided with a transparent cover 7 covering the outside of the camera 6. The camera 6 can monitor in real time whether there is a fire inside the fume hood body 1, and the transparent cover 7 can protect the camera 6.

[0026] Among them, the bottom end of the fume hood body 1 is provided with a funnel-shaped drainage hopper 8, the bottom end of the drainage hopper 8 is provided with a drainage pipe 9, the drainage pipe 9 is provided with a control valve 10, and the bottom end of the fume hood body 1 is provided with a horizontal cover plate 11 covering the top of the drainage hopper 8, and the horizontal cover plate 11 is provided with a number of drain holes 12, which can discharge the liquid after the fire is extinguished.

[0027] When working, this kind of laboratory fume hood fire prevention component, when the camera 6 detects a fire inside the fume hood body 1, the output shaft of the second reduction motor 5 drives the cabinet door 3 to rotate so that the cabinet door 3 is closed, thereby avoiding the spread of fire. The fire extinguishing component 4 can quickly extinguish the open fire inside the fume hood body 1, thereby avoiding the spread of the open fire and causing harm to the health of the staff, thereby improving safety; wherein, the control panel 2 controls the solenoid valve 4010 to open, and the high-pressure atomizing nozzle 409 sprays water mist from top to bottom to extinguish the fire, and then the second The output shaft of a reduction motor 406 drives the toggle plate 404 to rotate, and the toggle teeth 405 on the toggle plate 404 engage with the driving gear 403, causing the driving gear 403 to rotate, and the driving gear 403 drives the rotating shaft 402 to rotate, and the rotating shaft 402 drives the water outlet branch pipe 408 to rotate. When the toggle tooth 405 separates from the driving gear 403 during rotation, the rotating shaft 402 is reversed under the action of the torsion spring, so that the water outlet branch pipe drives multiple high-pressure atomizing nozzles 409 to swing back and forth, thereby improving the fire extinguishing effect.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A laboratory fume hood fire protection assembly, comprising a fume hood body (1) and a control panel (2), and two cabinet doors (3) arranged at the opening of the fume hood body (1), characterized in that: A fire prevention and extinguishing assembly (4) for fire prevention is provided inside the fume hood (1); The fire prevention and extinguishing assembly (4) comprises a water storage tank (401) arranged at the top of the fume hood (1); a rotating shaft (402) is provided at the top of the fume hood (1); torsion springs are provided at the connection points between the two ends of the rotating shaft (402) and the fume hood (1); a driving gear (403) is provided at one end of the rotating shaft (402); a toggle plate (404) is connected to the inside of the fume hood (1) via the rotating shaft; a toggle tooth (405) adapted to the driving gear (403) is provided on the outside of the toggle plate (404); and a first reduction motor (406) for driving the toggle plate (404) to rotate is installed on the fume hood (1); The bottom end of the water storage tank (401) is provided with a water outlet pipe (407) passing through the top wall of the fume hood (1); the bottom end of the water outlet pipe (407) is connected to a water outlet branch pipe (408); a plurality of high-pressure atomizing nozzles (409) facing downward are equidistantly provided on the water outlet branch pipe (408); a solenoid valve (4010) is installed on the water outlet pipe (407); and the first reduction motor (406) and the solenoid valve (4010) are both electrically connected to the control panel (2).

2. A laboratory fume hood fire protection assembly according to claim 1, characterized in that: A water supply connecting pipe (4011) is provided at the top of the fume hood body (1), and a cover plate (4012) is threadedly connected to the top of the water supply connecting pipe (4011).

3. A laboratory fume hood fire protection assembly according to claim 1, characterized in that: The cabinet door (3) is connected to the opening of the ventilation cabinet body (1) via a rotating shaft.

4. A laboratory fume hood fire protection assembly according to claim 3, characterized in that: A second reduction motor (5) for driving the cabinet door (3) to rotate is installed on the ventilation cabinet body (1), and the second reduction motor (5) is electrically connected to the control panel (2).

5. A laboratory fume hood fire protection assembly according to claim 1, characterized in that: A camera (6) is installed on one side of the interior of the fume hood (1), and a transparent cover (7) covering the outside of the camera (6) is provided on the inner wall of the fume hood (1).

6. A laboratory fume hood fire protection assembly according to claim 1, characterized in that: A funnel-shaped drain hopper (8) is provided at the bottom end of the fume hood body (1), a drain pipe (9) is provided at the bottom end of the drain hopper (8), and a control valve (10) is provided on the drain pipe (9).

7. A laboratory fume hood fire protection assembly according to claim 6, characterized in that: The bottom end of the fume hood (1) is provided with a horizontal cover plate (11) covering the top of the drainage hopper (8), and a plurality of drainage holes (12) are opened on the horizontal cover plate (11).

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