CN210786741U - Printing waste gas collection device - Google Patents
Printing waste gas collection device Download PDFInfo
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- CN210786741U CN210786741U CN201921220134.9U CN201921220134U CN210786741U CN 210786741 U CN210786741 U CN 210786741U CN 201921220134 U CN201921220134 U CN 201921220134U CN 210786741 U CN210786741 U CN 210786741U
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- waste gas
- cavity
- cooling recovery
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- 239000002912 waste gas Substances 0.000 title claims abstract description 34
- 238000007639 printing Methods 0.000 title claims abstract description 33
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 36
- 238000011084 recovery Methods 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims abstract description 11
- 239000010815 organic waste Substances 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 25
- 239000010425 asbestos Substances 0.000 claims description 24
- 229910052895 riebeckite Inorganic materials 0.000 claims description 24
- 238000001179 sorption measurement Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 5
- 230000002378 acidificating effect Effects 0.000 abstract description 5
- 239000005864 Sulphur Substances 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000004200 deflagration Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- -1 sulphur Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 16
- 239000012855 volatile organic compound Substances 0.000 description 13
- 239000003960 organic solvent Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 241000282414 Homo sapiens Species 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a printing waste gas collection device, include: the box body is internally provided with a partition board which divides the internal space of the box body into a cooling recovery cavity, a filter cavity and an external discharge channel; the cooling recovery cavity is positioned in the upper area in the internal space of the box body, and sodium hydroxide solution is placed in the cooling recovery cavity; the cooling recovery cavity is communicated with the filter cavity through a return pipeline arranged outside the box body; the top of the outer discharge channel is communicated with external air through an outer discharge pipeline; a filter assembly for adsorbing organic waste gas is arranged in the filter cavity; the air extractor comprises a plurality of air extracting covers, an air inlet pipeline and a first fan, wherein the bottom of the first fan is connected with a vent pipe, and the tail end of the vent pipe extends into the bottom of the sodium hydroxide solution. The utility model discloses in the waste gas that has reduced the temperature of waste gas be can not reach the temperature of deflagration, got rid of and contained sour compound such as sulphur, avoided the influence of acidic material to active carbon.
Description
Technical Field
The utility model relates to a printing waste gas collection device field, concretely relates to printing waste gas collection device.
Background
At present, in 2010, the emission of industrial VOCs is about 1335.6 ten thousand tons. Petroleum refining, coating, building and mechanical equipment manufacturing and printing are four industries with the emission of VOCs (volatile organic pollutants) on the front side, and account for 17%, 16%, 11% and 7% respectively. The emission ratio of the four industries is predicted to be further increased in 2020, and the emission of VOCs in China reaches 1785.31 ten thousand tons in 2020. As the number and variety of VOCs increase, they have become second only to particulate pollutants. VOCs have great harm to the environment, the growth of animals and plants and the health of human beings, and most of volatile organic compounds have toxic, malodorous and 'three-cause' effects.
Printing ink, toluene, xylene, gasoline, alcohol and other organic solvents are commonly used in the printing industry, and in the working process of a printing machine, more VOCs waste gas can be discharged, and the waste gas can be diffused into a production workshop to cause severe working environment and influence air quality. Especially, the printing ink drying process of the gravure printing process has serious pollution emission, and organic solvent accounting for 30 to 70 percent of the total amount of the printing ink volatilizes from a drying oven to generate a large amount of organic waste gas (VOCs), which seriously harms human health and destroys atmospheric environment.
Chinese utility model patent document with publication number CN208553488U discloses a printing machine waste gas collection processing apparatus, including box and the cover that induced drafts, inside filter chamber, combustion chamber and the clean room of being equipped with respectively of box, one-level fan and second grade fan are installed respectively to the box top, it has the ventilation pipe to induced draft cover upper end intercommunication, ventilation pipe one end communicates in one-level fan input, one-level fan output communicates inside the filter chamber, filter chamber inside installs the active carbon board respectively and filters the cotton board. Inside the cover that induced drafts absorbs the waste gas that the printer produced and enters into the box, through the filtration of active carbon board and filtration cotton board, get rid of the dust particle in the waste gas, then enter into the combustion chamber inside, under oxygen generator blowout oxygen and the effect of electron sparker, the realization carries out oxidation treatment once more to waste gas for carbide and sulphide in the waste gas are by thorough oxidation, and inside the gas of oxidation entered into the drip chamber, are neutralized by the inside alkaline solution of drip chamber. The harm of organic solvent to human body and environment can be greatly reduced by adopting flame combustion and gas flameless catalytic combustion, but the flame combustion and the flameless catalytic combustion still can generate a large amount of greenhouse gas carbon dioxide, and meanwhile, the generated secondary toxic gas still has great threat to environment and human body. The method is only suitable for purifying low-concentration malodorous gas; the utility model is used as a small device, the box body is a narrow closed space instead of a large combustion tower, the concentration of the organic solvent rapidly rises along with the continuous suction of the waste gas in the narrow closed space (the explosion limit of 1.8-15% is easily broken through in the actual use), especially the organic solvent used in the printing industry is extremely easy to deflagrate, and the explosion is extremely easily caused by directly igniting the organic solvent in the narrow closed space; which greatly limits the recovery of VOCs gas by the plant.
Disclosure of Invention
An object of the utility model is to provide a printing waste gas collection device retrieves the chamber through the inside cooling of placing sodium hydroxide solution and cools down and the preliminary treatment to organic waste gas, recycles filter assembly and adsorbs organic waste gas, and the box of having solved current printing waste gas collection device is narrow and small airtight space, directly lights the defect that very easily arouses the explosion.
Another object of the present invention is to provide a printing waste gas collecting device, which employs a straight pipe and an S-shaped bent pipe to form a vent pipe, thereby increasing the heat exchange area and improving the heat exchange effect; one end of the S-shaped bent pipe is connected with the bottom of the straight pipe, and the other end of the S-shaped bent pipe extends downwards; the defect that the printing machine is influenced by the recoil caused by the fact that waste gas is accumulated in an introduced air pipe due to waste gas treatment by using water in the conventional printing waste gas collecting device is overcome.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a printing waste gas collection device, include: the box body is internally provided with a partition board which divides the internal space of the box body into a cooling recovery cavity, a filter cavity and an external discharge channel; the cooling recovery cavity is positioned in the upper area in the internal space of the box body, and a sodium hydroxide solution is placed in the cooling recovery cavity; the filter cavity is positioned right below the cooling recovery cavity; the cooling recovery cavity is communicated with the filter cavity through a return pipeline arranged outside the box body, and one end of the return pipeline is connected with the upper area of the cooling recovery cavity; the top of the outer discharge channel is communicated with external air through an outer discharge pipeline; a filter assembly for adsorbing organic waste gas is arranged in the filter cavity; and
an air exhaust device, air exhaust device includes a plurality of extraction hoods, air inlet pipeline and first fan, air inlet pipeline one end intercommunication a plurality of extraction hoods, the first fan of other end intercommunication, first fan bottom has connect the breather pipe, the bottom of breather pipe end stretching into sodium hydroxide solution. The utility model discloses in with the VOCs expense of collecting through the cooling of sodium hydroxide solution and preliminary treatment, can get rid of and contain sour compound such as sulphur. The temperature of the waste gas is reduced, namely the waste gas can not reach the temperature of deflagration, the treated waste gas contains a large amount of moisture, so that the explosion is effectively avoided, and meanwhile, the polluted gas with the boiling point of over 310K and the concentration of over 0.005 percent is effectively separated; acidic compounds such as sulfur and the like are removed, so that the influence of acidic substances on the activated carbon is avoided, (the acidic gas can greatly reduce the adsorption capacity of the activated carbon); the gas is cooled and adsorbed, and the gas pressure of the box body is effectively reduced, so that the gas in the extraction hood can continuously and uninterruptedly enter the box body; the requirement on the power of the first fan is reduced. The concentration (mass percentage) of the sodium hydroxide solution in the utility model is 2-5%.
Optionally, a second fan is installed at the top of the box body located at the upper portion of the outer discharge channel, the outer discharge channel is communicated with an inlet of the second fan, and the outer discharge pipeline is communicated with an outlet of the second fan. The utility model discloses set up the second fan, further make gas process filtering component fast.
Optionally, the vent pipe includes a straight pipe and an S-shaped bent pipe, one end of the S-shaped bent pipe is connected to the bottom of the straight pipe, and the other end of the S-shaped bent pipe extends downward. The utility model adopts the straight pipe and the S-shaped bent pipe to form the vent pipe, which increases the heat exchange area and improves the heat exchange effect; one end of the S-shaped bent pipe is connected with the bottom of the straight pipe, the other end of the S-shaped bent pipe extends downwards, and solution is accumulated in the S-shaped bent pipe, so that gas is effectively prevented from backflushing to the air exhaust cover, and printer equipment is influenced (electrical equipment needs to be dampproof and is prevented from electric leakage).
Optionally, a trumpet-shaped interface is installed at one end, far away from the straight pipe, of the S-shaped bent pipe. The utility model discloses a horn-shaped interface, its exhaust is respond well.
Optionally, the filter assembly includes an activated carbon fiber filter plate and an asbestos filter plate. The utility model discloses an activated carbon fiber filter plate adsorbs VOCs gas, because its special microporous structure-it mainly contains micropore and a small amount of mesopore, and activated carbon contains macropore, mesopore and micropore, causes its absorption fast, the desorption is fast, the stoving is easy, long service life, energy saving, and can realize cleaner production. The activated carbon fiber filter plate and the asbestos filter plate are made of materials on the market.
Optionally, the bottom of the filter cavity is provided with a support plate, the tops of the activated carbon fiber filter plate and the asbestos filter plate are abutted against the partition plate at the bottom of the cooling recovery cavity, and the bottoms of the activated carbon fiber filter plate and the asbestos filter plate are abutted against the support plate for dividing the filter cavity into a plurality of independent cavities. The utility model discloses a filter chamber is separated to backup pad cooperation activated carbon fiber filter plate and asbestos filter plate, and it installs conveniently.
Optionally, the front ends of the activated carbon fiber filter plate and the asbestos filter plate, which are close to the return line, are also provided with a moisture adsorption plate, the moisture adsorption plate is filled with a molecular sieve, the top of the moisture adsorption plate is abutted against a partition plate at the bottom of the cooling recovery cavity, and the bottom of the moisture adsorption plate is abutted against a support plate. The utility model is provided with the moisture adsorption plate which can treat the moisture volatilized along with the cooling and adsorb certain organic solvent; the influence on the subsequent asbestos filter screen is avoided, and the overall treatment efficiency is improved.
Optionally, the box body is provided with three openings matched with the shapes of the side surfaces of the activated carbon fiber filter plate, the asbestos filter plate and the moisture absorption plate, and the upper end and the lower end of each opening are provided with rough surfaces of magic tapes; the upper end and the lower end of the activated carbon fiber filter plate, the asbestos filter plate and the moisture absorption plate are respectively provided with a fixed plate, and the inner side of each fixed plate is provided with a hook-sticking surface with a magic tape. The utility model discloses an during activated carbon fiber filter plate, asbestos filter plate and moisture absorption board inserted opening, the cooperation magic is pasted, need not twist the screw, and it is convenient to install.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses in with the VOCs expense of collecting through the cooling of sodium hydroxide solution and preliminary treatment, can get rid of and contain sour compound such as sulphur. The temperature of the waste gas is reduced, namely the waste gas can not reach the temperature of deflagration, the treated waste gas contains a large amount of moisture, so that the explosion is effectively avoided, and meanwhile, the polluted gas with the boiling point of over 310K and the concentration of over 0.005 percent is effectively separated; acidic compounds such as sulfur and the like are removed, so that the influence of acidic substances on the activated carbon is avoided, (the acidic gas can greatly reduce the adsorption capacity of the activated carbon); the gas is cooled and adsorbed, and the gas pressure of the box body is effectively reduced, so that the gas in the extraction hood can continuously and uninterruptedly enter the box body; the requirement on the power of the first fan is reduced. The concentration (mass percentage) of the sodium hydroxide solution in the utility model is 2-5%.
2. The utility model adopts the straight pipe and the S-shaped bent pipe to form the vent pipe, which increases the heat exchange area and improves the heat exchange effect; one end of the S-shaped bent pipe is connected with the bottom of the straight pipe, the other end of the S-shaped bent pipe extends downwards, and solution is accumulated in the S-shaped bent pipe, so that gas is effectively prevented from backflushing to the air exhaust cover, and printer equipment is influenced (electrical equipment needs to be dampproof and is prevented from electric leakage).
Drawings
Fig. 1 is a sectional view of embodiment 1 of the printing off-gas collecting apparatus of the present invention;
fig. 2 is an external structural view of embodiment 1 of the printing off-gas collecting apparatus of the present invention;
fig. 3 is a side sectional view of fig. 1 of embodiment 1 of the printing off-gas collecting apparatus of the present invention;
fig. 4 is an enlarged structural view of part a of fig. 3 of embodiment 1 of the printing off-gas collecting apparatus of the present invention.
1. A partition plate; 2. a cooling recovery cavity; 3. a filter chamber; 4. an outer discharge channel; 5. a return line; 6. a second fan; 7. an air extraction hood; 8. an air intake line; 9. a first fan; 10. a straight pipe; 11. an S-shaped bent pipe; 12. an interface; 13. a moisture adsorption plate; 14. an activated carbon fiber filter plate; 15. asbestos filter plate; 16. a support plate; 17. an opening; 18. rough surface; 19. a fixing plate; 20. sticking a hook surface; 21. a liquid pumping hole; 22. an outer discharge pipeline; 23. a breather pipe; 100. a box body; 200. and an air extracting device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In the description of the present invention, it should be noted that, for the orientation words, such as the terms "upper", "lower", "left", "right", "axial", "radial", "vertical", etc., indicating the orientation and positional relationship based on the orientation and positional relationship shown in the drawings, is only for convenience of description and simplification of the description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a plurality" means two or more unless specifically defined otherwise.
Unless otherwise expressly stated or limited, the terms "assembled", "connected" and "connected" are used broadly and are intended to be inclusive, e.g., fixed, detachable, or integral; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Example 1
As shown in fig. 1, 2, 3 and 4, the present invention provides a printing waste gas collecting device, including: a tank 100 and an air extractor 200. Wherein, a clapboard 1 is arranged in the box body, and divides the inner space of the box body into a cooling recovery cavity 2, a filter cavity 3 and an outer discharge channel 4; the cooling recovery cavity is positioned in the upper area in the internal space of the box body, and a sodium hydroxide solution is placed in the cooling recovery cavity; the filter cavity is positioned right below the cooling recovery cavity; the cooling recovery cavity is communicated with the filter cavity through a return pipeline arranged outside the box body, and one end of the return pipeline 5 is connected with the upper area of the cooling recovery cavity; the outer discharge channel is positioned at one side of the filter cavity, and the top of the outer discharge channel is communicated with the external air through an outer discharge pipeline 22; and the top of the box body positioned at the upper part of the outer discharge channel is provided with a second fan 6, the outer discharge channel is communicated with the inlet of the second fan, and the outer discharge pipeline is communicated with the outlet of the second fan. And a filtering component for adsorbing organic waste gas is arranged in the filtering cavity.
The air extracting device comprises a plurality of air extracting covers 7, an air inlet pipeline 8 and a first fan 9, one end of the air inlet pipeline is communicated with the air extracting covers, the other end of the air inlet pipeline is communicated with the first fan, a vent pipe 23 is connected to the bottom of the first fan, and the tail end of the vent pipe extends into the bottom of the sodium hydroxide solution. The concentration (mass percentage) of the sodium hydroxide solution in the utility model is 2-5%. The vent pipe comprises a straight pipe 10 and an S-shaped bent pipe 11, wherein one end of the S-shaped bent pipe is connected with the bottom of the straight pipe, and the other end of the S-shaped bent pipe extends downwards. And a trumpet-shaped connector 12 is arranged at one end of the S-shaped bent pipe, which is far away from the straight pipe.
The filter assembly comprises a water adsorption plate 13, an activated carbon fiber filter plate 14 and an asbestos filter plate 15. The utility model discloses an activated carbon fiber filter plate adsorbs VOCs gas, because its special microporous structure-it mainly contains micropore and a small amount of mesopore, and activated carbon contains macropore, mesopore and micropore, causes its absorption fast, the desorption is fast, the stoving is easy, long service life, energy saving, and can realize cleaner production. The activated carbon fiber filter plate and the asbestos filter plate are made of materials on the market. The bottom of the filter cavity is provided with a support plate 16, the tops of the activated carbon fiber filter plate and the asbestos filter plate are abutted against a partition plate at the bottom of the cooling and recycling cavity, and the bottoms of the activated carbon fiber filter plate and the asbestos filter plate are abutted against the support plate and used for dividing the filter cavity into a plurality of independent cavities. The water adsorption plate is located at the front ends, close to the return pipeline, of the activated carbon fiber filter plate and the asbestos filter plate, the water adsorption plate is filled with a molecular sieve, the top of the water adsorption plate is abutted against a partition plate at the bottom of the cooling recovery cavity, and the bottom of the water adsorption plate is abutted against a support plate. The front end in this embodiment is in terms of the direction of airflow.
The box body is provided with three openings 17 matched with the shapes of the side surfaces of the activated carbon fiber filter plate, the asbestos filter plate and the moisture absorption plate, and the upper end and the lower end of each opening are provided with rough surfaces 18 of magic tapes; the upper and lower ends of the activated carbon fiber filter plate, the asbestos filter plate and the moisture absorption plate are respectively provided with a fixed plate 19, and the inner side of each fixed plate is provided with a hook-and-loop surface 20 of a magic tape. And a liquid extracting hole 21 is formed on the side wall of the box body opposite to the cooling recovery cavity.
When this embodiment is implemented, gas suction in a plurality of extraction hoods is in the box to first fan, and the intracavity sodium hydroxide solution is retrieved in the cooling cools off to pass through moisture adsorption plate, activated carbon fiber filter plate and asbestos filter plate filtration in proper order, under the guide of second fan, outwards discharge via arranging the passageway outward.
Example 2
The utility model provides a printing waste gas collection device, include: the box body is internally provided with a partition board which divides the internal space of the box body into a cooling recovery cavity, a filter cavity and an exhaust channel; the cooling recovery cavity is positioned in the upper area in the internal space of the box body, and a sodium hydroxide solution is placed in the cooling recovery cavity; the filter cavity is positioned right below the cooling recovery cavity; the cooling recovery cavity is communicated with the filter cavity through a return pipeline arranged outside the box body, and one end of the return pipeline is connected with the upper area of the cooling recovery cavity; the top of the outer discharge channel is communicated with external air through an outer discharge pipeline; a filter assembly for adsorbing organic waste gas is arranged in the filter cavity; and
the air extracting device comprises a plurality of air extracting covers, an air inlet pipeline and a first fan, one end of the air inlet pipeline is communicated with the air extracting covers, the other end of the air inlet pipeline is communicated with the first fan, a vent pipe is connected to the bottom of the first fan, and the tail end of the vent pipe extends into the bottom of the sodium hydroxide solution.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (8)
1. A printing off-gas collection device, comprising:
the box body is internally provided with a partition board which divides the internal space of the box body into a cooling recovery cavity, a filter cavity and an external discharge channel; the cooling recovery cavity is positioned in the upper area in the internal space of the box body, and sodium hydroxide solution is placed in the cooling recovery cavity; the filter cavity is positioned right below the cooling recovery cavity; the cooling recovery cavity is communicated with the filter cavity through a return pipeline arranged outside the box body, and one end of the return pipeline is connected with the upper area of the cooling recovery cavity; the top of the outer discharge channel is communicated with external air through an outer discharge pipeline; a filter assembly for adsorbing organic waste gas is arranged in the filter cavity; and
an air exhaust device, air exhaust device includes a plurality of extraction hoods, air inlet pipeline and first fan, air inlet pipeline one end intercommunication a plurality of extraction hoods, the first fan of other end intercommunication, first fan bottom has connect the breather pipe, the bottom of breather pipe terminal stretching into the sodium hydroxide solution.
2. The printing waste gas collecting device of claim 1, wherein the top of the box body at the upper part of the outer discharge channel is provided with a second fan, the outer discharge channel is communicated with an inlet of the second fan, and the outer discharge pipeline is communicated with an outlet of the second fan.
3. The printing off-gas collecting device according to claim 1 or 2, wherein the vent pipe comprises a straight pipe and an S-shaped bent pipe, one end of the S-shaped bent pipe is connected with the bottom of the straight pipe, and the other end of the S-shaped bent pipe extends downwards.
4. The printing off-gas collecting device of claim 3, wherein an end of the S-shaped bent pipe away from the straight pipe is provided with a trumpet-shaped interface.
5. The printing off-gas collecting device of claim 1 or 2, wherein the filter assembly includes an activated carbon fiber filter sheet and an asbestos filter sheet.
6. The printing waste gas collecting device of claim 5, wherein a support plate is provided at the bottom of the filter chamber, and the top of each of the activated carbon fiber filter plate and the asbestos filter plate abuts against the partition plate at the bottom of the cooling recovery chamber, and the bottom thereof abuts against the support plate, thereby dividing the filter chamber into a plurality of independent chambers.
7. A printing waste gas collecting device according to claim 6, wherein a water adsorption plate is further provided at the front ends of the activated carbon fiber filter plate and the asbestos filter plate close to the return line, the water adsorption plate is filled with a molecular sieve, the top of the water adsorption plate abuts against the partition plate at the bottom of the cooling recovery chamber, and the bottom of the water adsorption plate abuts against the support plate.
8. The printing waste gas collecting device according to claim 7, wherein the case is provided with three openings corresponding to the shapes of the sides of the activated carbon fiber filter plate, the asbestos filter plate and the moisture absorption plate, and the upper and lower ends of the openings are provided with the rough surfaces of the hook and loop fasteners; the upper end and the lower end of the activated carbon fiber filter plate, the asbestos filter plate and the moisture absorption plate are respectively provided with a fixed plate, and the inner side of each fixed plate is provided with a hook-sticking surface with a magic tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921220134.9U CN210786741U (en) | 2019-07-31 | 2019-07-31 | Printing waste gas collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921220134.9U CN210786741U (en) | 2019-07-31 | 2019-07-31 | Printing waste gas collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210786741U true CN210786741U (en) | 2020-06-19 |
Family
ID=71235828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921220134.9U Active CN210786741U (en) | 2019-07-31 | 2019-07-31 | Printing waste gas collection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210786741U (en) |
-
2019
- 2019-07-31 CN CN201921220134.9U patent/CN210786741U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A printing waste gas collection device Granted publication date: 20200619 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Hangzhou Yuhang sub branch Pledgor: HANGZHOU CHANGMING PRINTING Co.,Ltd. Registration number: Y2024980004756 |