A fume hood acid mist exhaust device

Abstract

The utility model relates to the technical field of waste gas purification, especially to a fume hood acid mist discharging device, when using, starting the exhaust fan to make the acid mist in the box body pass through the exhaust pipe and carry out the air exhaust, the acid mist passes through the adsorption component and carries out the adsorption treatment, then the acid mist enters the alkali washing component and carries out the alkali washing neutralization, then the acid mist after twice purification treatment is discharged, improves the environmental protection, including the box body, the exhaust pipe and the exhaust fan, the box body top and exhaust pipe input end intercommunication, install the exhaust fan on the exhaust pipe, still include adsorption component and alkali washing component, the exhaust fan output and adsorption component input intercommunication, adsorption component output and alkali washing component input intercommunication.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas purification, and in particular to a fume hood acid mist emission device. Background Technology

[0002] A fume hood, also known as a smoke hood, is a large piece of equipment in laboratories, especially chemical laboratories. Its purpose is to reduce the exposure of experimenters to harmful gases. Complete isolation requires a glove box. A fume hood is a primary barrier protecting personnel from the hazards of toxic chemical fumes. It can also serve as an important safety backup device, effectively removing harmful gases and protecting workers and the laboratory environment in cases of failed chemical experiments or the generation of chemical fumes, dust, and toxic gases.

[0003] In the prior art, patent document with publication number CN210876690U discloses a fume hood acid mist emission device, including a fastening mechanism, on which a gas guiding regulating pipe assembly is slidably fitted. A flexible hose connected to the exhaust port is installed at the upper end of the gas guiding regulating pipe assembly, and a mist suction hood is provided at the lower end of the gas guiding regulating pipe assembly.

[0004] During use, it was found that the above-mentioned device directly discharged acid mist, resulting in low environmental friendliness. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a fume hood acid mist emission device.

[0006] This utility model discloses an acid mist emission device for a fume hood, comprising a housing, an exhaust pipe, and an exhaust fan. The top of the housing is connected to the input end of the exhaust pipe, and the exhaust fan is installed on the exhaust pipe. It also includes an adsorption component and an alkaline washing component. The output end of the exhaust fan is connected to the input end of the adsorption component, and the output end of the adsorption component is connected to the input end of the alkaline washing component. In use, the exhaust fan is activated, causing the acid mist inside the housing to be drawn out through the exhaust pipe. The acid mist is adsorbed by the adsorption component, and then enters the alkaline washing component for alkaline washing and neutralization. After two purification treatments, the acid mist is discharged, improving environmental friendliness.

[0007] Preferably, the adsorption assembly includes a three-way pipe, a gas supply pipe, an adsorption box, and valves. The output end of the exhaust fan is connected to the input end of the three-way pipe. The two sets of output ends of the three-way pipe are respectively connected to the input ends of a set of gas supply pipes. The output ends of both sets of gas supply pipes are connected to the alkaline washing assembly. Each set of gas supply pipes is equipped with a set of adsorption boxes and two sets of valves, with the adsorption box located between the two sets of valves. Activated carbon is installed inside the adsorption box. By opening the two sets of valves on one set of gas supply pipes and closing the two sets of valves on the other set of gas supply pipes, acid mist enters the adsorption box and is adsorbed by the activated carbon. When it is necessary to replace the activated carbon in the adsorption box, the valves on the two sets of gas supply pipes can be switched, improving convenience.

[0008] Preferably, the alkaline washing assembly includes an alkaline washing tank, an alkaline pump, a suction pipe, and a delivery pipe. The output ends of both sets of gas delivery pipes are connected to one end of the alkaline washing tank. An alkaline pump is installed on the alkaline washing tank. A suction pipe is provided at the input end of the alkaline pump, and the input end of the suction pipe is connected to one end of the alkaline washing tank. A delivery pipe is provided at the output end of the alkaline pump, and the output end of the delivery pipe extends to the top of the inner side of the alkaline washing tank. After the acid mist is treated by activated carbon adsorption inside the valve, it enters the interior of the alkaline washing tank through the gas delivery pipe. The alkaline pump is started, so that the alkaline solution at the bottom of the alkaline washing tank is transported to the top of the interior of the alkaline washing tank with the cooperation of the suction pipe and the delivery pipe and falls down. The alkaline solution and the rising acid mist undergo a neutralization reaction.

[0009] Preferably, it also includes a drain pipe and a drain valve. The alkaline washing tank is equipped with a drain pipe and a drain valve. When it is necessary to drain the alkaline solution inside the alkaline washing tank, the drain valve is opened, so that the alkaline solution is drained out through the drain pipe.

[0010] Preferably, it also includes a sealing plate and vent holes. The sealing plate is installed inside the alkaline washing tank, and multiple sets of vent holes are provided on the sealing plate. The alkaline solution falls onto the sealing plate and falls to the bottom of the alkaline washing tank through the multiple sets of vent holes. The acid mist enters the middle of the inner side of the alkaline washing tank and rises to the top of the inner side of the alkaline washing tank through the multiple sets of vent holes. When the acid mist passes through the vent holes, it comes into full contact with the alkaline solution, thereby improving the neutralization efficiency.

[0011] Preferably, it also includes an exhaust pipe, and the output end of the alkaline washing tank is provided with an exhaust pipe; the acid mist after two treatments is discharged through the exhaust pipe.

[0012] Preferably, it also includes an exhaust hood, which is installed inside the housing, with the exhaust hood's output end connected to the exhaust pipe's input end; the exhaust fan, in conjunction with the exhaust pipe and the exhaust hood, rapidly exhausts the acid mist inside the housing, improving emission efficiency.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the exhaust fan is turned on, so that the acid mist inside the box is drawn out through the exhaust pipe. The acid mist is adsorbed by the adsorption component, and then the acid mist enters the alkaline washing component for alkaline washing and neutralization. After two purification treatments, the acid mist is discharged, which improves environmental protection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0016] Figure 3 It is an enlarged structural diagram of the exhaust fan and air supply pipes, etc.

[0017] Figure 4 This is an enlarged structural diagram of the alkaline washing tank and sealing plate, etc.

[0018] Figure 5 yes Figure 4 A magnified schematic diagram of part A in the middle.

[0019] The following are labeled in the attached diagram: 1. Box body; 2. Exhaust pipe; 3. Exhaust fan; 4. T-connector; 5. Gas supply pipe; 6. Adsorption box; 7. Valve; 8. Alkali washing box; 9. Alkali pump; 10. Liquid extraction pipe; 11. Liquid supply pipe; 15. Drain pipe; 16. Drain valve; 17. Sealing plate; 18. Vent hole; 19. Exhaust pipe; 20. Exhaust hood. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] like Figures 1 to 5 As shown, the present invention provides a fume hood acid mist emission device, which includes a housing 1, an exhaust pipe 2 and an exhaust fan 3. The top of the housing 1 is connected to the input end of the exhaust pipe 2. The exhaust fan 3 is installed on the exhaust pipe 2. The device also includes an adsorption component and an alkaline washing component. The output end of the exhaust fan 3 is connected to the input end of the adsorption component, and the output end of the adsorption component is connected to the input end of the alkaline washing component.

[0023] like Figures 2 to 4 As shown, the adsorption assembly includes a three-way pipe 4, a gas supply pipe 5, an adsorption box 6, and valves 7. The output end of the exhaust fan 3 is connected to the input end of the three-way pipe 4. The two sets of output ends of the three-way pipe 4 are respectively connected to the input ends of a set of gas supply pipes 5. The output ends of the two sets of gas supply pipes 5 are both connected to the alkaline washing assembly. Each set of gas supply pipes 5 is equipped with a set of adsorption boxes 6 and two sets of valves 7. The adsorption box 6 is located between the two sets of valves 7.

[0024] In this embodiment, during use, the exhaust fan 3 is started, so that the acid mist inside the box 1 is drawn out through the exhaust pipe 2. The adsorption box 6 is equipped with activated carbon. Two sets of valves 7 on one set of gas supply pipes 5 are opened and two sets of valves 7 on another set of gas supply pipes 5 are closed, so that the acid mist enters the adsorption box 6 and is adsorbed by the activated carbon. When it is necessary to replace the activated carbon in the adsorption box 6, the valves 7 on the two sets of gas supply pipes 5 can be switched.

[0025] Example 2

[0026] like Figures 1 to 5As shown, the present invention provides a fume hood acid mist emission device, which includes a housing 1, an exhaust pipe 2 and an exhaust fan 3. The top of the housing 1 is connected to the input end of the exhaust pipe 2. The exhaust fan 3 is installed on the exhaust pipe 2. The device also includes an adsorption component and an alkaline washing component. The output end of the exhaust fan 3 is connected to the input end of the adsorption component, and the output end of the adsorption component is connected to the input end of the alkaline washing component.

[0027] like Figures 2 to 4 As shown, the adsorption assembly includes a three-way pipe 4, a gas supply pipe 5, an adsorption box 6, and valves 7. The output end of the exhaust fan 3 is connected to the input end of the three-way pipe 4. The two sets of output ends of the three-way pipe 4 are respectively connected to the input ends of a set of gas supply pipes 5. The output ends of the two sets of gas supply pipes 5 are both connected to the alkaline washing assembly. Each set of gas supply pipes 5 is equipped with a set of adsorption boxes 6 and two sets of valves 7. The adsorption box 6 is located between the two sets of valves 7.

[0028] The alkaline washing assembly includes an alkaline washing tank 8, an alkaline pump 9, a suction pipe 10, and a delivery pipe 11. The output ends of the two sets of gas delivery pipes 5 are connected to one end of the alkaline washing tank 8. An alkaline pump 9 is installed on the alkaline washing tank 8. The input end of the alkaline pump 9 is provided with a suction pipe 10, which is connected to one end of the alkaline washing tank 8. The output end of the alkaline pump 9 is provided with a delivery pipe 11, which extends to the top of the inner side of the alkaline washing tank 8.

[0029] It also includes a drain pipe 15 and a drain valve 16. The alkaline washing tank 8 is equipped with a drain pipe 15 and a drain valve 16.

[0030] It also includes a sealing plate 17 and vent holes 18. The sealing plate 17 is installed inside the alkaline washing tank 8, and multiple sets of vent holes 18 are provided on the sealing plate 17.

[0031] It also includes an exhaust pipe 19, and the output end of the alkaline washing tank 8 is provided with an exhaust pipe 19;

[0032] It also includes a ventilation hood 20, which is installed inside the housing 1. The output end of the ventilation hood 20 is connected to the input end of the ventilation pipe 2.

[0033] In this embodiment, during use, the exhaust fan 3 is activated, causing the acid mist inside the chamber 1 to be drawn out through the exhaust pipe 2. The adsorption chamber 6 is equipped with activated carbon. Two sets of valves 7 on one set of gas supply pipes 5 are opened, and two sets of valves 7 on another set of gas supply pipes 5 are closed, allowing the acid mist to enter the adsorption chamber 6 and be adsorbed by the activated carbon. When it is necessary to replace the activated carbon in the adsorption chamber 6, the valves 7 on the two sets of gas supply pipes 5 are switched. After being adsorbed by the activated carbon inside the valves 7, the acid mist enters the alkaline washing chamber through the gas supply pipe 5. Inside the alkaline tank 8, the alkaline solution pump 9 is started, so that the alkaline solution at the bottom of the alkaline washing tank 8 is transported to the top of the alkaline washing tank 8 with the cooperation of the suction pipe 10 and the delivery pipe 11. The alkaline solution falls onto the sealing plate 17 and falls to the bottom of the alkaline washing tank 8 through multiple sets of vent holes 18. The acid mist enters the middle of the inner side of the alkaline washing tank 8 and rises to the top of the inner side of the alkaline washing tank 8 through multiple sets of vent holes 18. When the acid mist passes through the vent holes 18, it comes into full contact with the alkaline solution. When it is necessary to drain the alkaline solution inside the alkaline washing tank 8, the drain valve 16 is opened, so that the alkaline solution is drained out through the drain pipe 15.

[0034] The exhaust fan 3 and alkaline pump 9 of the acid mist emission device for a fume hood of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fume hood acid mist emission device, comprising a housing (1), an exhaust pipe (2), and an exhaust fan (3), wherein the top of the housing (1) is connected to the input end of the exhaust pipe (2), and the exhaust fan (3) is installed on the exhaust pipe (2), characterized in that, It also includes an adsorption component and an alkaline washing component. The output end of the exhaust fan (3) is connected to the input end of the adsorption component, and the output end of the adsorption component is connected to the input end of the alkaline washing component. The adsorption assembly includes a three-way pipe (4), a gas supply pipe (5), an adsorption box (6), and valves (7). The output end of the exhaust fan (3) is connected to the input end of the three-way pipe (4). The two sets of output ends of the three-way pipe (4) are respectively connected to the input end of a set of gas supply pipes (5). The output ends of the two sets of gas supply pipes (5) are connected to the alkaline washing assembly. Each set of gas supply pipes (5) is equipped with a set of adsorption boxes (6) and two sets of valves (7). The adsorption box (6) is located between the two sets of valves (7). The alkaline washing assembly includes an alkaline washing tank (8), an alkaline pump (9), a suction pipe (10), and a delivery pipe (11). The output ends of two sets of gas delivery pipes (5) are connected to one end of the alkaline washing tank (8). An alkaline pump (9) is installed on the alkaline washing tank (8). A suction pipe (10) is provided at the input end of the alkaline pump (9). The input end of the suction pipe (10) is connected to one end of the alkaline washing tank (8). A delivery pipe (11) is provided at the output end of the alkaline pump (9). The output end of the delivery pipe (11) extends to the top of the inner side of the alkaline washing tank (8).

2. The fume hood acid mist emission device as described in claim 1, characterized in that, It also includes a drain pipe (15) and a drain valve (16). The alkaline washing tank (8) is equipped with a drain pipe (15) and a drain valve (16) is provided on the drain pipe (15).

3. The fume hood acid mist emission device as described in claim 1, characterized in that, It also includes a sealing plate (17) and vent holes (18). The sealing plate (17) is installed inside the alkaline washing tank (8), and multiple sets of vent holes (18) are provided on the sealing plate (17).

4. The fume hood acid mist emission device as described in claim 1, characterized in that, It also includes an exhaust pipe (19), and the output end of the alkaline washing tank (8) is provided with an exhaust pipe (19).

5. The fume hood acid mist emission device as described in claim 1, characterized in that, It also includes a ventilation hood (20), which is installed inside the housing (1). The output end of the ventilation hood (20) is connected to the input end of the ventilation pipe (2).

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