Fuming cupboard fire extinguishing device

Abstract

The fuming cupboard fire extinguishing device comprises an experiment cabinet and a placement cabinet, the placement cabinet is arranged at the bottom end of the experiment cabinet, an experiment cabin is formed in the front face of the experiment cabinet, a fire extinguishing assembly used for extinguishing fire of the experiment cabin is arranged in the placement cabinet, the fire extinguishing assembly comprises a nitrogen storage tank, and the nitrogen storage tank is used for supplying air pressure; the gas inlet end of the fire extinguishing agent storage tank is communicated with the exhaust end of the nitrogen storage tank; the control valve is arranged at the discharging end of the fire extinguishing agent storage tank and used for discharging control over the fire extinguishing agent. And the gas sensor is arranged at the top of the experiment module. According to the invention, the mounting piece for implementing the fire extinguishing device is arranged on the inner wall of the back surface of the experiment module, so that the gas sensor is used for early warning and detection of fire behavior so as to assist the control valve in on-off control, so that a fire extinguishing agent can be accurately and timely released, and the fire extinguishing action can be completed without opening the experiment module; the whole operation mode is more convenient and safer.

Description

Technical Field

[0001] The present invention relates to the field of safety equipment for chemical laboratories, and particularly to a fire extinguishing device for a fume hood. Background Art

[0002] Laboratory fume hoods are common safety equipment in laboratories, mainly used to control the diffusion of harmful gases, vapors, dusts and odors, and provide a relatively safe and environmentally friendly environment for staff to conduct experimental operations.

[0003] However, dangerous chemical experiments are often carried out in fume hoods, and there are potential safety hazards such as misoperations by experimental personnel and out-of-control exothermic reactions during the process. To reduce the fire risk in fume hoods, fire-fighting equipment such as fire extinguishers, fire blankets, and fire sand are usually configured in the laboratory. Once a fire occurs, call the police in time, turn off the power supply at the same time, stop the experiment, and quickly use the on-site fire-fighting equipment to fight the fire during the weak initial stage of the fire; but when the fire is difficult to control, quickly evacuate the scene and wait for fire rescue. Obviously, such fire-fighting measures have problems of untimely fire extinguishing. Whether the initial fire can be controlled greatly depends on the fire knowledge and fire prevention and extinguishing capabilities of the on-site fire-fighting personnel, which is likely to turn the initially weak fire into a strong fire and eventually cause disasters. Summary of the Invention

[0004] The purpose of the present invention is to provide a fast-response fire extinguishing device for a fume hood to solve the problem of untimely fire fighting in the fume hood mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fast-response fire extinguishing device, which consists of a fume hood fire detector, a fire controller, a fire extinguishing agent storage tank, including an experimental cabinet and a placement cabinet. The placement cabinet is arranged at the bottom end of the experimental cabinet. An experimental chamber is opened on the front surface of the experimental cabinet. A fire extinguishing component for extinguishing the experimental chamber is arranged in the placement cabinet. A mounting member for implementing the fire extinguishing device is arranged on the inner wall of the back surface of the experimental chamber. The fire extinguishing component includes:

[0006] A nitrogen gas storage tank for supplying air pressure;

[0007] A fire extinguishing agent storage tank, the air inlet end of which is communicated with the exhaust end of the nitrogen gas storage tank. A placing component for placing the nitrogen gas storage tank and the fire extinguishing agent storage tank is arranged in the placement cabinet;

[0008] A control valve is arranged at the discharge end of the fire extinguishing agent storage tank for controlling the discharge of the fire extinguishing agent;

[0009] A gas sensor is arranged at the top of the experimental chamber.

[0010] Preferably, a cabinet door is hinged on the front of the storage cabinet, a vertical baffle is arranged in the middle of the storage cabinet along the vertical direction, and a plurality of transverse partitions are arranged horizontally between one side of the vertical baffle and the inner wall of one side of the storage cabinet.

[0011] Preferably, the mounting component includes a mounting rack arranged at the back of the experimental cabin, and the detection end of the gas sensor is connected to the front side of the mounting rack through.

[0012] Preferably, the communication end of the gas sensor is electrically connected to a transmission line, an end of the transmission line away from the gas sensor is electrically connected to a control end of the control valve, a discharge end of the control valve is provided with a discharge pipe, an end of the discharge pipe away from the control valve passes through the top of the placement cabinet and is provided with a nozzle, and the nozzle is inserted and connected to the front of the mounting rack.

[0013] Preferably, the containing assembly comprises:

[0014] Sliding guide plates, two sliding guide plates are horizontally and symmetrically arranged on the inner wall of the bottom end of the placement cabinet;

[0015] The support plate is slidably connected to the top of the sliding guide plate, and the top of the support plate is slidably interlaced with an arc-shaped clamping plate for clamping the nitrogen storage tank and the fire extinguishing agent storage tank.

[0016] Preferably, a guide groove is provided at the top of the sliding guide plate, and guide sliders are provided on both sides of the bottom end of the support plate. The guide sliders are slidably connected in the guide groove, and top support members for controlling the arc-shaped splint top support are provided at both ends of the support plate.

[0017] Preferably, a placement groove is provided on the inner wall of the bottom end of the guide slide groove, a sliding inner cavity is provided at both ends of the support plate, the bottom of the arc-shaped clamping plate is slidably inserted and connected in the sliding inner cavity, and the top support member includes:

[0018] An extrusion rod, the extrusion rod is horizontally slidable and inserted into the sliding inner cavity;

[0019] A top support rod is slidably inserted and connected to the middle part of the guide sliding block in the vertical direction, and the top of the top support rod is slidably inserted and connected to the sliding inner cavity, and the bottom of the top support rod is slidably inserted and connected to the placement groove.

[0020] Preferably, support grooves are provided on the inner walls on both sides of the insertion point of the arc-shaped clamping plate and the support plate, support sliders are fixedly connected on both sides of the bottom of the arc-shaped clamping plate, the support sliders are slidably inserted in the support grooves, and a roller is provided on the end of the support slider away from the arc-shaped clamping plate.

[0021] Preferably, the inner walls of the top and bottom ends of the sliding inner cavity are provided with limiting sliding grooves, the top and bottom ends of the extrusion rod are fixedly connected with limiting sliding blocks, and the limiting sliding blocks are slidably inserted and connected in the limiting sliding grooves.

[0022] Preferably, blocking sliding grooves are provided on the inner walls on both sides of the intersection of the top support rod and the guiding sliding block. Blocking sliding blocks are fixedly connected to both sides of the bottom of the top support rod. The blocking sliding blocks are slidably inserted into the blocking sliding grooves. An extrusion spring is arranged at the top of the blocking sliding block in the blocking sliding groove.

[0023] The technical effects and advantages of the present invention:

[0024] (1) First, a mounting member for implementing a fire extinguishing device is provided on the inner wall of the back surface of the experimental cabin of the present invention. In this way, a gas sensor is used for early warning detection of a fire, so as to assist the control valve in on-off control, and further ensure that the fire extinguishing agent can be released accurately and in a timely manner. Through such a setting method, it is possible to complete the fire extinguishing operation without opening the experimental cabin, and the whole operation method is more convenient and safe;

[0025] (2) A placing assembly for placing a nitrogen storage tank and a fire extinguishing agent storage tank is provided in the placing cabinet of the present invention. Through the setting of the placing assembly, not only is it more convenient to store the nitrogen storage tank and the fire extinguishing agent storage tank used in this solution, but also it is more convenient to take, place, fill, and maintain the two, and different types of fire extinguishing agents can be stored to deal with different types of fires. Description of the drawings

[0026] Figure 1 It is a schematic structural diagram of the whole of the present invention.

[0027] Figure 2 For the present invention Figure 1 A schematic enlarged view of the structure at A in the figure.

[0028] Figure 3 It is a schematic structural diagram of the placing cabinet of the present invention and its internal structure.

[0029] Figure 4 It is a sectional view of the structure of one end of the placing assembly of the present invention.

[0030] Figure 5 For the present invention Figure 4 A schematic enlarged view of the structure at B in the figure.

[0031] Figure 6 For the present invention Figure 4 A schematic enlarged view of the structure at C in the figure.

[0032] Figure 7 It is a schematic structural diagram of one end of the sliding guide plate of the present invention.

[0033] Figure 8 It is a control principle diagram of the fire extinguishing of the present invention.

[0034] In the figure: 1. experimental cabinet; 101. experimental cabin; 2. placement cabinet; 201. cabinet door; 202. vertical baffle; 203. horizontal partition; 3. mounting rack; 4. sliding guide plate; 401. guide slide; 402. placement slot; 5. support plate; 501. support slide; 502. limit slide; 503. guide slide; 6. arc clamp; 601. support slide; 602. roller; 7. nitrogen storage tank; 8. fire extinguishing agent storage tank; 9. control valve; 10. gas sensor; 1001. transmission line; 11. nozzle; 1101. discharge pipe; 12. extrusion rod; 1201. limit slide; 13. top support rod; 1301. blocking slide; 14. extrusion spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present invention provides Figure 1-7 A fume hood fire extinguishing device shown in the figure includes a laboratory cabinet 1 and a storage cabinet 2. The storage cabinet 2 is arranged at the bottom end of the laboratory cabinet 1. A cabinet door 201 is hinged on the front of the storage cabinet 2. A vertical baffle 202 is arranged in the middle of the storage cabinet 2 along the vertical direction. A plurality of transverse partitions 203 are arranged horizontally between one side of the vertical baffle 202 and the inner wall of one side of the storage cabinet 2.

[0037] It should be noted that the internal space of the storage cabinet 2 is divided by the arrangement of the vertical baffle 202 and the horizontal partition 203. With such an arrangement, the storage space inside the storage cabinet 2 can be arranged more flexibly.

[0038] An experimental cabin 101 is opened on the front of the experimental cabinet 1, and a fire extinguishing component for extinguishing the fire in the experimental cabin 101 is arranged in the placement cabinet 2. A mounting part for implementing the fire extinguishing device is arranged on the inner wall at the back of the experimental cabin 101. The mounting part includes a mounting frame 3 arranged at the back of the experimental cabin 101, and the detection end of the gas sensor 10 is connected to the front of the mounting frame 3.

[0039] It should be noted that the front of the mounting frame 3 is provided with placement holes, through which the fire extinguishing component implementation components are placed. The gas sensor 10 is a device for detecting and measuring the concentration of a specific gas in the air. They use specific physical or chemical principles to sense the target gas and convert it into a measurable electrical signal or other form of output.

[0040] The fire extinguishing kit includes:

[0041] A nitrogen storage tank 7, and the nitrogen storage tank 7 is used to supply air pressure;

[0042] An extinguishing agent storage tank 8, the air inlet end of the extinguishing agent storage tank 8 is communicated with the exhaust end of the nitrogen storage tank 7, a placing assembly for placing the nitrogen storage tank 7 and the extinguishing agent storage tank 8 is arranged in the placing cabinet 2, an extinguishing agent is stored in the extinguishing agent storage tank 8, and under the pressurization of the nitrogen storage tank 7, the extinguishing agent can be discharged outward;

[0043] Specifically, the placing assembly includes:

[0044] Sliding guide plates 4, and two sliding guide plates 4 are horizontally and symmetrically arranged on the inner wall of the bottom end of the placing cabinet 2;

[0045] Furthermore, a guiding chute 401 is opened at the top end of the sliding guide plate 4, guiding sliders 503 are arranged on both side edges of the bottom end of the support plate 5, the guiding sliders 503 are slidably inserted and connected in the guiding chute 401, and top support members for controlling the top support of the arc-shaped clamping plates 6 are arranged at both ends of the support plate 5.

[0046] Through the sliding fit between the guiding chute 401 and the guiding slider 503, the support plate 5 can move horizontally and longitudinally in a straight line at the bottom of the placing cabinet 2 more stably.

[0047] A support plate 5, the support plate 5 is slidably connected to the top of the sliding guide plate 4, and an arc-shaped clamping plate 6 for clamping the nitrogen storage tank 7 and the extinguishing agent storage tank 8 is slidably inserted through the top of the support plate 5.

[0048] The arc-shaped clamping plate 6 clamps the bottoms of the nitrogen storage tank 7 and the extinguishing agent storage tank 8 through the part exposed at the top end of the support plate 5, and the arc-shaped structural design makes it more conform to the outer walls of the nitrogen storage tank 7 and the extinguishing agent storage tank 8, so that the installation of the nitrogen storage tank 7 and the extinguishing agent storage tank 8 is more stable.

[0049] Specifically, support chutes 501 are opened on the inner walls on both sides of the intersection of the arc-shaped clamping plate 6 and the support plate 5, support sliders 601 are fixedly connected to both sides of the bottom of the arc-shaped clamping plate 6, the support sliders 601 are slidably inserted and connected in the support chutes 501, and rollers 602 are arranged at the ends of the support sliders 601 away from the arc-shaped clamping plate 6.

[0050] It should be noted that through the arrangement of the rollers 602, the arc-shaped clamping plate 6 is more convenient and fast to move in the vertical direction, which reduces the sliding friction and makes it more convenient for the arc-shaped clamping plate 6 to be lifted and lowered.

[0051] Furthermore, a placement groove 402 is provided on the inner wall at the bottom of the guide slide groove 401, and the number and position of the placement groove 402 correspond to the number and position of the arc-shaped splint 6, and the best opening position is at the intersection of the horizontal transverse line directly opposite the middle of the arc-shaped splint 6. Both ends of the support plate 5 are provided with a sliding inner cavity, and the bottom of the arc-shaped splint 6 is slidably inserted and connected in the sliding inner cavity. The top support member includes:

[0052] An extrusion rod 12, the extrusion rod 12 is horizontally slidable and inserted into the sliding inner cavity;

[0053] Specifically, the inner walls of the top and bottom ends of the sliding cavity are both provided with limiting sliding grooves 502 , and the top and bottom ends of the extrusion rod 12 are both fixedly connected with limiting sliding blocks 1201 , and the limiting sliding blocks 1201 are slidably inserted and connected in the limiting sliding grooves 502 .

[0054] By the cooperation between the limiting slider 1201 and the limiting slide groove 502 , the extrusion rod 12 can be stably arranged horizontally, and the number and position of the extrusion rods 12 also correspond to the number and position of the arc-shaped clamping plates 6 .

[0055] The top support rod 13 is slidably inserted and connected to the middle part of the guide slider 503 along the vertical direction, and the top of the top support rod 13 is slidably inserted and connected to the sliding inner cavity, and the bottom of the top support rod 13 is slidably inserted and connected to the placement groove 402.

[0056] Specifically, the inner walls on both sides of the insertion point of the top support rod 13 and the guide slider 503 are provided with blocking grooves, and both sides of the bottom of the top support rod 13 are fixedly connected with blocking sliders 1301, and the blocking slider 1301 is slidably inserted and connected in the blocking groove, and an extrusion spring 14 is provided in the blocking groove and at the top of the blocking slider 1301.

[0057] It should be noted that, through the structural combination between the blocking sliding block 1301 and the blocking sliding groove, the supporting rod 13 can stably maintain a vertical state and slide.

[0058] A control valve 9, which is arranged at the discharge end of the fire extinguishing agent storage tank 8, and is used for controlling the discharge of the fire extinguishing agent;

[0059] The gas sensor 10 is disposed in the experimental chamber 101 .

[0060] Specifically, the communication end of the gas sensor 10 is electrically connected to the transmission line 1001, and the end of the transmission line 1001 away from the gas sensor 10 is electrically connected to the control end of the control valve 9. The discharge end of the control valve 9 is provided with a discharge pipe 1101. The end of the discharge pipe 1101 away from the control valve 9 passes through the top of the placement cabinet 2 and is provided with a nozzle 11. The nozzle 11 is inserted and connected to the front of the mounting frame 3.

[0061] It should be noted that with reference to Figure 8 , the gas sensor 10 detects the gas in the experimental chamber 101. The gas to be detected is the carbon-containing gas generated by a fire. It transmits the detected data to the control end of the control valve 9 through the transmission line 1001. After the control end of the control valve 9 receives the signal, it judges whether it is a fire state according to the data volume. If it is judged to be a fire state, the passage managed by the control valve 9 is unblocked. At this time, the fire extinguishing agent will be discharged through the nozzle 11 through the discharge port of the control valve 9 for fire extinguishing, and during the fire extinguishing process, the gas sensor 10 continuously detects the gas, so as to achieve real-time control.

[0062] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fume hood fire extinguishing device, comprising an experimental cabinet (1) and a placement cabinet (2), the placement cabinet (2) is arranged at the bottom end of the experimental cabinet (1), and is characterized in that, The front of the experimental cabinet (1) is provided with an experimental chamber (101). An extinguishing component for extinguishing the fire in the experimental chamber (101) is arranged in the storage cabinet (2). A mounting member for implementing the fire extinguishing device is arranged on the inner wall of the back surface of the experimental chamber (101). The extinguishing component includes: A nitrogen gas storage tank (7) which is used to supply air pressure; A fire extinguishing agent storage tank (8), the air inlet end of the fire extinguishing agent storage tank (8) is communicated with the exhaust end of the nitrogen gas storage tank (7). A placing component for placing the nitrogen gas storage tank (7) and the fire extinguishing agent storage tank (8) is arranged in the storage cabinet (2); A control valve (9) which is arranged at the discharge end of the fire extinguishing agent storage tank (8) and is used for controlling the discharge of the fire extinguishing agent; A gas sensor (10) which is arranged in the experimental chamber (101).

2. The fire extinguishing device for a fume hood according to claim 1, characterized in that, The front surface of the storage cabinet (2) is hinged with a cabinet door (201). A vertical baffle (202) is arranged in the middle of the storage cabinet (2) along the vertical direction. A plurality of horizontal partitions (203) are arranged horizontally between one side of the vertical baffle (202) and the inner wall of one side of the storage cabinet (2).

3. The fume hood fire extinguishing device according to claim 1, characterized in that, The mounting member includes a mounting rack (3) arranged on the back surface of the experimental chamber (101). The detection end of the gas sensor (10) is connected through the front surface of the mounting rack (3).

4. The fume hood fire extinguishing device according to claim 3, characterized in that, The communication end of the gas sensor (10) is electrically connected with a transmission line (1001). One end of the transmission line (1001) far away from the gas sensor (10) is electrically connected with the control end of the control valve (9). A discharge pipe (1101) is arranged at the discharge end of the control valve (9). One end of the discharge pipe (1101) far away from the control valve (9) penetrates through the top end of the storage cabinet (2) and is provided with a nozzle (11). The nozzle (11) is inserted and connected through the front surface of the mounting rack (3).

5. The fire extinguishing device for a fume hood according to claim 1, characterized in that, The placing component includes: Sliding guide plates (4), two of the sliding guide plates (4) are symmetrically arranged horizontally on the inner wall of the bottom end of the storage cabinet (2); A support plate (5) which is slidably connected to the top of the sliding guide plates (4). An arc-shaped clamping plate (6) for clamping the nitrogen gas storage tank (7) and the fire extinguishing agent storage tank (8) is slidably inserted through the top of the support plate (5).

6. The fume hood fire extinguishing device according to claim 5, characterized in that, A guiding chute (401) is opened at the top end of the sliding guide plate (4). Guide sliding blocks (503) are arranged on both side edges of the bottom end of the support plate (5). The guide sliding blocks (503) are slidably inserted into the guiding chute (401). Thrust members for controlling the thrust of the arc-shaped clamping plate (6) are arranged at both ends of the support plate (5).

7. The fume hood fire extinguishing device according to claim 6, wherein A placing groove (402) is opened on the inner wall of the bottom end of the guiding chute (401). Sliding inner cavities are opened at both ends of the support plate (5). The bottom of the arc-shaped clamping plate (6) is slidably inserted into the sliding inner cavities. The thrust members include: A pressing rod (12) which is horizontally and slidably inserted into the sliding inner cavities; The top strut (13), the top strut (13) is slidably inserted and connected to the middle of the guiding slider (503) in the vertical direction, and the top of the top strut (13) is slidably inserted and connected to the sliding inner cavity, and the bottom of the top strut (13) is slidably inserted and connected to the placement groove (402).

8. The fume hood fire extinguishing device according to claim 7, characterized in that, On both inner walls of the two sides where the arc-shaped clamping plate (6) intersects with the support plate (5), support sliding grooves (501) are provided. On both sides of the bottom of the arc-shaped clamping plate (6), support sliding blocks (601) are fixedly connected. The support sliding blocks (601) are slidably inserted and connected into the support sliding grooves (501). One end of the support sliding block (601) away from the arc-shaped clamping plate (6) is provided with rollers (602).

9. The fire extinguishing device for a fume hood according to claim 7, characterized in that, On both inner walls of the top end and the bottom end of the sliding inner cavity, limiting sliding grooves (502) are provided. On both the top end and the bottom end of the extrusion rod (12), limiting sliding blocks (1201) are fixedly connected. The limiting sliding blocks (1201) are slidably inserted and connected into the limiting sliding grooves (502).

10. A fume hood fire extinguishing device according to claim 7, characterized in that, On both inner walls of the two sides where the top strut (13) intersects with the guiding slider (503), blocking sliding grooves are provided. On both sides of the bottom of the top strut (13), blocking sliding blocks (1301) are fixedly connected. The blocking sliding blocks (1301) are slidably inserted and connected into the blocking sliding grooves. An extrusion spring (14) is provided at the top of the blocking sliding block (1301) in the blocking sliding groove.

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