CN211585818U - A high-efficient exhaust treatment device for laboratory - Google Patents

Abstract

The utility model discloses a high-efficiency waste gas treatment device used in a laboratory, which comprises a casing. The casing is provided with an air inlet for communicating with the laboratory and an air outlet for exhausting gas. The shell is provided with a water storage chamber and a spray chamber and a filter chamber which are arranged side by side above the water storage chamber; the water storage chamber is filled with liquid; the upper end of the spray chamber is communicated with the air inlet, and the lower part of the spray chamber is provided with a connection between the spray chamber and the storage chamber. The outlet of the spray chamber of the water chamber is provided with a number of spray nozzles above the spray chamber, and the liquid in the water storage chamber communicates with the spray nozzles through the water circulation device; An activated carbon filter screen, a microfiltration membrane filter and an ultraviolet lamp are arranged indoors from bottom to top, an air outlet is arranged at the top of the filter chamber, and an exhaust fan is arranged at the air outlet. Realize the efficient treatment of laboratory exhaust gas and ensure that the laboratory exhausts pure air.

Description

Efficient exhaust gas treatment units for laboratories

technical field

The utility model relates to laboratory equipment, in particular to a high-efficiency waste gas treatment device used in the laboratory.

Background technique

The laboratory is a place where personnel conduct experimental analysis or production and processing. Various chemical kits and medicines are used in the experimental analysis process and production and processing. These reagents and medicines often volatilize toxic and harmful gases. Chemical reactions also generate waste gas; the sources of waste gas mainly include volatiles from reagents and samples, intermediates in the analysis process, leaks, and evacuated standard and carrier gases. In recent years, the pollution of laboratories has become increasingly serious, and the problem of exhaust gas pollution has attracted more and more attention. If it is not treated or handled improperly, it will not only affect the working environment and health of the laboratory personnel, but also seriously affect the living environment of the surrounding residents. However, some existing laboratory waste gas treatment methods need to install a large centrifugal fan on the roof, the fume hood and the centrifugal fan are connected through an exhaust pipe, and the exhaust gas generated during the test is discharged through the centrifugal fan, while more ventilation The cabinets are directly discharged, and only the pollutants are transferred to the outdoor environment, polluting the surrounding environment, affecting the health of residents, and still can not achieve the filtering effect of the exhaust gas.

Utility model content

In order to overcome the above shortcomings, the purpose of the present invention is to provide a high-efficiency waste gas treatment device used in a laboratory.

In order to achieve the above purpose, the technical scheme adopted by the present invention is: a high-efficiency waste gas treatment device used in a laboratory, comprising a casing, and the casing is provided with an air inlet for communicating with the laboratory and an air outlet for exhausting the gas. In that: a water storage chamber and a spray chamber and a filter chamber are arranged side by side above the water storage chamber in the housing;

The water storage chamber is filled with liquid;

The upper end of the spray chamber is communicated with the air inlet, a spray chamber outlet connecting the spray chamber and the water storage chamber is arranged below the spray chamber, a plurality of spray nozzles are arranged above the spray chamber, and the water storage chamber is provided with a spray chamber outlet. The liquid in the room communicates with the spray nozzle through the water circulation device;

The lower end of the filter chamber is provided with a connection port connecting the water storage chamber and the filter chamber, the filter chamber is provided with an activated carbon filter screen, a microfiltration membrane filter and an ultraviolet lamp from bottom to top, and the air outlet is provided at the top of the filter chamber , an exhaust fan is arranged at the air outlet.

The beneficial effect of the utility model is that the exhaust gas of the test chamber enters the spray chamber from the air inlet, and passes through the spray chamber, the water storage chamber and the filter chamber in sequence under the action of the exhaust fan, and the liquid stored in the water storage chamber can be recycled. The spray chamber provides spray liquid, and the exhaust gas of the laboratory is dedusted in the spray chamber, and then the harmful gas is filtered through the filter chamber, so that the treated gas is clean and pollution-free, and the efficient treatment of the exhaust gas is realized.

Preferably, the water circulation device includes a circulating water pipe connecting the liquid in the water storage chamber and the spray nozzle, a water pump is provided on the circulating water pipe, and the water pump is fixed on the casing.

Preferably, in order to prevent clogging of the stainless steel nozzle, a filter screen is provided at the connecting end of the circulating water pipe and the water storage chamber.

Preferably, a plurality of upper and lower baffles are arranged in the spray chamber, the upper end of the upper baffle is fixed at the top of the spray chamber, the lower baffle is fixed at the bottom end of the spray chamber, and the upper baffle is fixed at the top of the spray chamber. It is arranged alternately with the lower baffle, and the spray chamber is divided into a plurality of spray zones that are connected end to end, the air inlet is communicated with the leftmost spray zone, and the spray chamber outlet is connected to the rightmost spray zone. The shower area is connected. The upper baffle and the lower baffle form an S-shaped air passage in the inner space of the spray chamber, which prolongs the distance of the exhaust gas in the spray chamber, prolongs the spraying time of the exhaust gas, and enhances the spray filtering effect.

Preferably, in order to allow the sprayed liquid to pass through, a plurality of water passage holes are provided at the lower end of the lower partition plate.

Preferably, the bottom end of the spray chamber is inclined downward from the air inlet end to the outlet end of the spray chamber, and the inclination angle is less than 15°. .

Preferably, a spray nozzle is provided at the top of each spray section.

Preferably, in order to facilitate the replacement of the liquid in the water storage chamber, the water storage chamber is also connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected to an external liquid source, the water outlet pipe is arranged at the bottom of the water outlet chamber, and the outlet pipe is arranged at the bottom of the water outlet chamber. Valves are provided at the water pipe and the water outlet pipe.

Preferably, the activated carbon filter, the microfiltration membrane filter and the ultraviolet lamp are detachably arranged on the inner wall of the filter chamber to facilitate replacement and cleaning of the activated carbon filter, the microfiltration membrane filter and the ultraviolet lamp.

Description of drawings

1 is a schematic structural diagram of this embodiment;

FIG. 2 is a schematic structural diagram of the spray chamber of this embodiment.

In the picture:

1-shell, 2-air inlet, 3-air outlet, 4-water storage room, 5-spray room, 6-filter room, 7-spray room outlet, 8-spray nozzle, 9-water circulation device, 9a-circulating water pipe, 9b-water pump, 10-connecting port, 11-activated carbon filter, 12-microfiltration membrane filter, 13-ultraviolet lamp, 14-exhaust fan, 15a-upper partition, 15b-lower partition, 16- water hole, 17a- water inlet pipe, 17b- water outlet pipe, 18- valve.

Detailed ways

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, so that the protection scope of the present utility model can be more clearly defined. .

Referring to FIG. 1, the high-efficiency waste gas treatment device for the laboratory in this embodiment includes a housing 1, and the housing 1 is provided with an air inlet 2 communicating with the laboratory and an air outlet 3 for exhausting gas. The air outlet Exhaust fans 14 are arranged at 3 places, and the exhaust gas from the laboratory enters from the air inlet 2 and is discharged from the air outlet 3 under the action of the exhaust fan 14 . The housing 1 is provided with a water storage chamber 4 , a spray chamber 5 and a filter chamber 6 which are located side by side above the water storage chamber 4 .

The water storage chamber 4 contains liquid, the upper end of the spray chamber 5 communicates with the air inlet 2 , and a spray chamber outlet 7 connecting the spray chamber 5 and the water storage chamber 4 is arranged below the spray chamber 5 . Several spray nozzles 8 are arranged above the spray chamber 5, and the liquid in the water storage chamber 4 communicates with the spray nozzles 8 through the water circulation device 9. The liquid can be clean water or neutralized liquid provided according to the acidity and alkalinity of laboratory exhaust gas. The water circulation device 9 includes a circulating water pipe 9a that communicates the liquid in the water storage chamber 4 and the spray nozzle 8 . In order to prevent the spray nozzle 8 from being blocked, the connecting end of the circulating water pipe 9b and the water storage chamber 4 is provided with a filter screen, and the sediment in the liquid in the water storage chamber 4 is filtered out through the filter screen. The water storage chamber 4 is filled with liquid, and the upper surface of the liquid is lower than the bottom surface of the spray chamber 5 to ensure that the liquid in the water storage chamber 4 will not flow back to the spray chamber. The water pump 9b works, and the liquid in the water storage chamber 4 is transported to the spray nozzle 8 through the circulating water pipe 9a, and the water mist is sprayed from the spray nozzle 8, and the waste gas entering the spray chamber is dedusted. Neutralize the liquid while adjusting the pH of the exhaust gas.

Referring to FIG. 2 , a plurality of upper baffles 15 a and lower baffles 15 b are arranged in the spray chamber 5 , the upper end of the upper baffle 15 a is fixed at the top of the spray chamber 5 , and the lower baffle 15 b is fixed at the bottom end of the spray chamber 5 . The upper baffle plate 15a and the lower baffle plate 15b are staggered, dividing the spray chamber 5 into a plurality of spray sections that are connected end to end. There is one upper baffle 15a and one lower baffle 15b shown in the figure, and the spray chamber 5 is divided into three spray sections. Multiple upper baffles 15a and lower baffles 15b are more effective. The air inlet 2 communicates with the rightmost spray section, and the spray chamber outlet 7 communicates with the leftmost spray section. The upper baffle 15a and the lower baffle 15b form an S-shaped air passage in the interior space of the spray chamber 5, prolong the distance of the exhaust gas in the spray chamber 5, prolong the spray time of the exhaust gas, and enhance the spray filtering effect. In order to facilitate the condensed water droplets formed by the water mist sprayed by the spray nozzle 8 to quickly fall back to the water storage chamber 4, a number of water through holes 16 are provided at the lower end of the lower partition plate 15b, and the bottom end of the spray chamber 5 is formed from the air inlet 2. The end to the outlet 7 of the spray chamber is inclined downward, and the inclination angle is less than 15°. The top of each spray section is provided with a spray nozzle 8, and the number of spray nozzles 8 in each spray section shown in the figure is two.

The lower end of the filter chamber 6 is provided with a connection port 10 connecting the water storage chamber 4 and the filter chamber 6 . An activated carbon filter screen 11 , a microfiltration membrane filter 12 and an ultraviolet lamp 13 are arranged from bottom to top in the filter chamber 6 . The activated carbon filter 11 is made of polyurethane foam with powdered activated carbon, which has the high-efficiency adsorption performance of activated carbon to remove volatile organic compounds formaldehyde, toluene, hydrogen sulfide, chlorobenzene and pollutants in the air. The microfiltration membrane filter 12 includes a plate-shaped intermetallic compound microfiltration membrane, and the intermetallic compound microfiltration membrane includes a titanium base and a porous material covering the titanium base. Bacteria, and substances such as large molecular weight colloids. The activated carbon filter screen 11, the microfiltration membrane filter 12 and the ultraviolet lamp 13 cooperate with each other, and the filtering effect is good. The activated carbon filter screen 11, the microfiltration membrane filter 12 and the ultraviolet lamp 13 are detachably arranged on the inner wall of the filter chamber 6 to facilitate replacement and maintenance. The air outlet 3 is arranged at the top of the filter chamber 6 .

In order to facilitate the replacement of the liquid in the water storage chamber, the water storage chamber 4 is also connected with a water inlet pipe 17a and a water outlet pipe 17b. The water inlet pipe 17a is connected to an external liquid source, and the water outlet pipe 17b is arranged at the bottom of the water storage chamber 4. A valve 18 is provided on 17b.

The above embodiment is only to illustrate the technical concept and characteristics of the present invention, and its purpose is to let those who are familiar with this technology understand the content of the present invention and implement it, and cannot limit the protection scope of the present invention by this. Equivalent changes or modifications made in the spirit of the utility model shall all be included within the protection scope of the present utility model.

Claims (9)

1. A high-efficient exhaust treatment device for laboratory, including casing (1), be provided with air intake (2) and exhaust gas's air outlet (3) of intercommunication laboratory on casing (1), its characterized in that: a water storage chamber (4), a spray chamber (5) and a filter chamber (6) which are arranged above the water storage chamber (4) side by side are arranged in the shell (1);

the water storage chamber (4) is filled with liquid;

the upper end of the spray chamber (5) is communicated with the air inlet (2), a spray chamber outlet (7) which is communicated with the spray chamber (5) and the water storage chamber (4) is arranged below the spray chamber (5), a plurality of spray nozzles (8) are arranged above the spray chamber (5), and liquid in the water storage chamber (4) is communicated with the spray nozzles (8) through a water circulating device (9);

filter chamber (6) lower extreme is provided with connector (10) of intercommunication reservoir chamber (4) and filter chamber (6), be provided with activated carbon filter screen (11), micro-filtration membrane filter (12) and ultraviolet lamp (13) from bottom to top in filter chamber (6), air outlet (3) set up on filter chamber (6) top, air outlet (3) department is provided with air exhauster (14).

2. The high efficiency exhaust gas treatment device for laboratory according to claim 1, wherein: the water circulation device (9) comprises a circulating water pipe (9a) communicated with liquid in the water storage chamber (4) and the spray nozzle (8), a water pump (9b) is arranged on the circulating water pipe (9a), and the water pump (9b) is fixed on the shell (1).

3. The high efficiency exhaust gas treatment device for laboratory according to claim 2, wherein: and a filter screen is arranged at the connecting end of the circulating water pipe (9a) and the water storage chamber (4).

4. The high efficiency exhaust gas treatment device for laboratory according to claim 1, wherein: the improved spraying device is characterized in that a plurality of upper partition plates (15a) and lower partition plates (15b) are arranged in the spraying chamber (5), the upper ends of the upper partition plates (15a) are fixed to the top end of the spraying chamber (5), the lower partition plates (15b) are fixed to the bottom end of the spraying chamber (5), the upper partition plates (15a) and the lower partition plates (15b) are arranged in a staggered mode, the spraying chamber (5) is divided into a plurality of spraying sections which are sequentially connected end to end, the air inlet (2) is communicated with the rightmost spraying section, and the outlet (7) of the spraying chamber is communicated with the leftmost spraying section.

5. The high efficiency exhaust gas treatment device for laboratory according to claim 4, wherein: the lower end of the lower partition plate (15b) is provided with a plurality of water through holes (16).

6. The high efficiency exhaust gas treatment device for laboratory according to claim 4, wherein: the bottom end of the spray chamber (5) is downwards inclined from the air inlet (2) end to the spray chamber outlet (7) end, and the inclination angle is smaller than 15 degrees.

7. The high efficiency exhaust gas treatment device for laboratory according to claim 4, wherein: each spraying interval top is provided with a spraying nozzle (8).

8. The high efficiency exhaust gas treatment device for laboratory according to claim 1, wherein: the water storage chamber (4) is further communicated with a water inlet pipe (17a) and a water outlet pipe (17b), the water inlet pipe (17a) is connected with an external liquid source, the water outlet pipe (17b) is arranged at the bottom of the water storage chamber (4), and valves (18) are arranged on the water inlet pipe (17a) and the water outlet pipe (17 b).

9. The high efficiency exhaust gas treatment device for laboratory according to claim 1, wherein: the activated carbon filter screen (11), the micro-filtration membrane filter (12) and the ultraviolet lamp (13) are detachably arranged on the inner wall of the filter chamber (6).

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