CN210057892U - Welding waste gas treatment equipment - Google Patents
Welding waste gas treatment equipment Download PDFInfo
- Publication number
- CN210057892U CN210057892U CN201920229049.2U CN201920229049U CN210057892U CN 210057892 U CN210057892 U CN 210057892U CN 201920229049 U CN201920229049 U CN 201920229049U CN 210057892 U CN210057892 U CN 210057892U
- Authority
- CN
- China
- Prior art keywords
- filter
- cavity
- gas treatment
- welding
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The utility model discloses a welding exhaust-gas treatment equipment, include casing, fan, strain a section of thick bamboo, filter core, ultraviolet lamp and ozonolysis catalysis spareThe shell is provided with a first cavity and a second cavity, and the shell is provided with an air inlet communicated with the first cavity and an air outlet communicated with the second cavity; the fan is used for driving the gas to be treated to flow; the filter cylinder is arranged in the first chamber and communicated with the second chamber, and the inner side wall of the filter cylinder is provided with a photocatalytic component; the filter element is sleeved outside the filter cylinder; the ultraviolet lamp part extends into the inner cavity of the filter cylinder; the ozone decomposition catalyst is disposed in the second chamber. The utility model discloses a welding exhaust-gas treatment equipment has and to filter most particulate matter, organic gas, O in the welding smoke and dust3、NOX、SO2And harmful gases such as CO and the like, the treatment efficiency is high, the treatment is thorough, no secondary pollution is generated, and the photocatalysis system is arranged in the inner cavity of the filter cylinder, so that the equipment has a compact structure, the space is reasonably utilized, the equipment is small in volume, and the operation and the use are convenient.
Description
Technical Field
The utility model relates to a waste gas treatment field especially relates to a welding waste gas treatment equipment.
Background
Welding fume refers to gas and dust generated during welding. It has the characteristics of higher exhaust gas temperature, large viscosity, small smoke particles, compounding of solid and gaseous pollution and the like. Because the degree of automation of the existing welding process in China is low, working points are scattered, and the change factors of the process are many, welding fume cannot be thoroughly treated for a long time. The application effect of the existing treatment system is not ideal due to the influence of various factors, so that the treatment of welding fume is a great problem of environmental protection at present. The characteristics of the welding fume depend on the material of the material to be welded, the composition of the welding material, the welding process and the welding process parameters, but basically include MnO2、Fe2O3、SiO2Soot particles, organic gas and O from the welding material3、NOX、SO2And toxic waste gases such as CO and HF.
Equipment for treating welding fume in prior art and defects thereofMainly comprises the following steps: 1. the electrostatic dust collector can effectively treat dust particles, but has huge equipment, large energy consumption and capability of treating organic gas and O3、NOX、SO2Exhaust gases such as CO and HF have no effect. 2. Filter cylinder dust removal + active carbon adsorption, simple structure, pure absorption formula is handled, but purification efficiency is not high, can't continuously purify ozone. 3. Although the plasma purification has high purification efficiency, the structure is complex, the danger is high, the investment cost is high, secondary ozone pollution exists, and the like.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model discloses a welding waste gas treatment equipment for solve the problem that the treatment effeciency of the existing welding waste gas treatment equipment is low, the equipment is huge.
The utility model discloses a following technical scheme realizes:
a welding exhaust gas treatment device comprising:
the device comprises a shell, a first cavity and a second cavity, wherein the shell is provided with an accommodating cavity which is divided into the first cavity and the second cavity by a partition plate, and the shell is provided with an air inlet communicated with the first cavity and an air outlet communicated with the second cavity;
the fan is arranged at the air inlet, the air outlet or the accommodating cavity to drive the gas to be treated to enter the accommodating cavity from the air inlet and flow out from the air outlet;
the filter cartridge is provided with an opening at one end, is arranged in the first chamber and is communicated with the second chamber, the side wall of the filter cartridge is provided with a filter hole in a penetrating way, and the inner side wall of the filter cartridge is provided with a photocatalytic component;
the filter element is sleeved outside the filter cylinder;
an ultraviolet lamp extending partially into the interior chamber of the filter cartridge;
an ozone decomposition catalyst disposed in the second chamber to eliminate ozone in the gas flowing through the second chamber.
As an improvement, the ultraviolet lamp is a dual-band ultraviolet lamp, wherein the wavelength of one band is 185nm, and the wavelength of the other band is 254 nm; and/or the presence of a gas in the atmosphere,
the photocatalytic component is a metal wire mesh structure coated with a photocatalyst or a fiber cotton structure coated with a photocatalyst, and is spread and laid on the inner side wall of the filter cylinder.
As an improved mode, the partition plate comprises a transverse plate and a vertical plate which are connected in an L shape, the vertical plate and one of the inner side walls of the shell are arranged at intervals, a through hole is formed in the vertical plate, and the filter cartridge is detachably mounted on the vertical plate in a mode that the opening and the through hole are arranged in an aligned mode.
As an improvement, the welding waste gas treatment equipment further comprises a dust collecting piece arranged on one side of the transverse plate facing the filter element and used for collecting dust, and the dust collecting piece is of a drawer type structure which is detachably inserted in the shell from the outside of the shell in a sliding manner.
As an improvement mode, the welding waste gas treatment equipment further comprises a horizontal plate transversely arranged in the second cavity, a plurality of air holes are formed in the horizontal plate in a penetrating mode, and the ozone decomposition catalytic piece is arranged on the horizontal plate in a stacking mode and faces one side of the filter element.
As a modification, the welding exhaust gas treatment device further includes a filter member for adsorbing soot particles, and the filter member is detachably mounted on a side of the ozone decomposition catalyst member away from the horizontal plate.
As a modification, the filter member is a drawer-type structure which is detachably inserted and installed in the housing in a sliding manner from the outside of the housing; and/or the presence of a gas in the atmosphere,
the ozone decomposition catalytic component is a drawer type structure which can be disassembled from the shell and is inserted and installed in the shell in a sliding card mode.
As a modification, the ozone decomposition catalyst comprises a body which is fully distributed in honeycomb holes and a granular ozone decomposition catalyst which is arranged in the honeycomb holes; alternatively, the first and second electrodes may be,
the ozone decomposition catalytic member comprises an active carbon fiber net and an ozone decomposition catalyst attached to the active carbon fiber net; alternatively, the first and second electrodes may be,
the ozone decomposition catalyst member includes a honeycomb substrate and an ozone decomposition catalyst attached to the honeycomb substrate.
As an improvement mode, the welding waste gas treatment equipment further comprises a soot blowing device, wherein the soot blowing device comprises an air compressor and a soot blowing assembly connected with the air compressor, and the soot blowing assembly is provided with an air nozzle used for blowing air to an inner cavity of the filter cylinder.
As a refinement, the welding exhaust gas treatment apparatus further comprises a flame arrester disposed within the first chamber and below the air inlet; and/or the presence of a gas in the atmosphere,
the welding waste gas treatment equipment also comprises an air suction pipe connected with the air inlet, and the air suction pipe is a universal pipe; and/or the presence of a gas in the atmosphere,
the air inlet set up in the top of casing, the gas outlet set up in a side of casing just is close to the bottom setting of casing.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the welding waste gas treatment equipment provided by the utility model can filter most of particulate matters in welding smoke dust by arranging the filter element; by arranging the photocatalytic component and the ultraviolet lamp, the ultraviolet lamp and the photocatalytic component can generate hydroxyl radicals which can react with organic gas and NO in welding fumeX、SO2And CO, etc. to purify the exhaust gas; the ozone in the welding fume can be eliminated and utilized by arranging the ozone decomposition catalytic piece. Whole equipment is high to the treatment effeciency of harmful substance and gaseous in the welding smoke and dust, handles thoroughly, does not produce secondary pollution, and through the inner chamber of straining a section of thick bamboo with the setting of photocatalysis system, makes equipment structure compact, the rational utilization space, equipment is small, the operation of being convenient for uses to can obtain the favor in market.
Drawings
Fig. 1 is a schematic view of an internal structure of a first viewing angle of a welding waste gas treatment device according to an embodiment of the present invention;
fig. 2 is an internal structure diagram at a second view angle of the welding waste gas treatment device provided by the embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
Referring to fig. 1 and fig. 2, a welding waste gas treatment apparatus 100 according to an embodiment of the present invention includes:
a housing 10, the housing 10 having a receiving cavity 11, the receiving cavity 11 being divided into a first chamber 111 and a second chamber 112 by a partition 12, the housing 10 being provided with an air inlet 13 communicating with the first chamber 111 and an air outlet 14 communicating with the second chamber 112;
the fan 20 is arranged at the air inlet 13 or the air outlet 14 or in the accommodating cavity 11 to drive the gas to be treated to enter the accommodating cavity 11 from the air inlet 13 and flow out 14 from the air outlet;
the filter cartridge 30 is provided with an opening 31 at one end of the filter cartridge 30, the filter cartridge 30 is arranged in the first chamber 111, the opening 31 is communicated with the second chamber 112, the side wall of the filter cartridge 30 is provided with a filter hole in a penetrating way, and the inner side wall of the filter cartridge 30 is provided with a photocatalytic component 32;
the filter element 40 is sleeved outside the filter cylinder 30;
an ultraviolet lamp 50, the ultraviolet lamp 50 extending partially into the interior cavity of the filter cartridge 30;
an ozone-decomposing catalyst 60, the ozone-decomposing catalyst 60 being disposed in the second chamber 112 to eliminate ozone in the gas flowing through the second chamber 112.
In this design, most of the particulate matter in the welding fume can be filtered out by the filter element 40; by arranging the photocatalytic component 32 and the ultraviolet lamp 40, the ultraviolet lamp 40 and the photocatalytic component 32 can generate hydroxyl radicals which can react with organic gas and NO in welding fumeX、SO2CO, etc. to purifyAn exhaust gas; the ozone decomposing catalyst 60 can eliminate the ozone in the welding fume and the incompletely reacted ozone generated by the ultraviolet lamp. Whole equipment is high to the treatment effeciency of harmful substance and gaseous in the welding smoke and dust, handles thoroughly, does not produce secondary pollution, and through setting up photocatalysis system in the inner chamber of straining a section of thick bamboo 30, makes equipment structure compact, the rational utilization space, equipment is small, the operation of being convenient for uses to can obtain the favor in market.
As a modification of the present embodiment, the photocatalytic member 32 is a wire mesh structure coated with a photocatalyst or a fiber cotton structure coated with a photocatalyst, and the photocatalytic member 32 is spread and laid on the inner side wall of the filter cartridge 30. An alternative photocatalyst is TiO2Or ZnO.
As a modification of this embodiment, the UV lamp 50 is a dual-band UV lamp, wherein the wavelength of one band is 185nm and the wavelength of the other band is 254 nm. When in use, the generated ultraviolet light with the wavelength of 185nm is used for decomposing ozone to generate atomic oxygen, the generated atomic oxygen can react with water molecules in gas to generate hydroxyl free radicals with extremely strong oxidizing power, and the hydroxyl free radicals can react with organic gas to generate CO2And H2O, hydroxy radical can react NOX、SO2Oxidation into
The generated ultraviolet light with the wavelength of 254nm is used for exciting the photocatalyst to generate high-energy electron-hole pairs, and further generates hydroxyl radicals with extremely strong oxidizing capability under the action of oxygen and water molecules. Of course, it is also possible to use UV lamps 50 which emit UV light only at 254 nm.
As a modification of the present embodiment, the air inlet 13 is disposed at the top of the housing 10, and the air outlet 14 is disposed at one side of the housing 10 and near the bottom of the housing 10. With this design, the free fall of dust particles in the welding fume is facilitated.
As an improvement of this embodiment, the partition 12 includes a horizontal plate 121 and a vertical plate 122 connected in an L shape, the vertical plate 122 is disposed at an interval with one of the inner side walls of the casing 10, a through hole 1221 is opened on the vertical plate 122, and the filter cartridge 30 is detachably mounted on the vertical plate 122 in a manner that the opening 31 is aligned with the through hole 1221. Specifically, a snap structure or a clip structure is provided on the vertical plate 122, and the filter cartridge 30 is detachably connected to the vertical plate 122 by means of a snap connection or a clip connection. This design facilitates removal of cartridge 30 for replacement of cartridge 40 or replacement of photocatalytic component 32 by providing cartridge 30 with a removable connection to riser 122. It should be noted that, by mounting the filter cartridge 30 on the vertical plate 122, it is also convenient to arrange the ultraviolet lamp 50, as shown in fig. 1, one end of the ultraviolet lamp 50 can be fixed on the side wall of the housing 10, and the other end of the ultraviolet lamp 50 extends into the inner cavity of the filter cartridge 30, and compared with other mounting manners, the mounting manner can be a more compact device, reduce the size of the device, and make the occupied space of the device smaller.
As a modification of the present embodiment, the welding exhaust gas treatment device 100 further includes a dust collecting member 70 disposed on a side of the horizontal plate 121 facing the filter element 40 for collecting dust, and the dust collecting member 70 is a drawer-type structure detachably installed in the housing 10 by being inserted in a sliding manner from outside the housing 10. Specifically, the inner side wall of the housing 10 is provided with a sliding card insertion structure, such as a card insertion structure used for a conventional drawer, in which the dust collection member 70 is slidably inserted. With this design, the dust can be easily removed, and when more dust is collected in the dust collecting member 70, the dust collecting member 70 is only required to be drawn out from the housing 10, the dust is dumped, and the dust collecting member 70 is mounted again.
As a modification of this embodiment, the welding exhaust gas treatment device 100 further includes a horizontal plate 80 disposed transversely in the second chamber 112, the horizontal plate 80 has a plurality of ventilation holes, and the ozone decomposition catalyst 60 is stacked on a side of the horizontal plate 80 facing the filter element 40.
As a modification of this embodiment, the welding exhaust gas treatment apparatus 100 further includes a filter 90 for adsorbing soot particles, and the filter 90 is detachably mounted on the side of the ozone-decomposing catalyst 60 away from the horizontal plate 80. The filter member 90 serves to adsorb soot particles of welding soot that are not completely filtered by the filter cartridge 30. Preferably, the filter element 90 is filter cotton. Further, the filter 90 may be designed as a drawer-type structure that can be detached from the outside of the housing 10 and slidably inserted into the housing 10, so as to facilitate installation and replacement of the filter 90.
As a modification of this embodiment, the ozone decomposition catalyst member 60 includes a body which is filled in the honeycomb holes and a granular ozone decomposition catalyst which is installed in the honeycomb holes; alternatively, the ozone-decomposing catalyst member 60 includes an activated carbon fiber mesh and an ozone-decomposing catalyst attached to the activated carbon fiber mesh; alternatively, the ozone decomposition catalyst member includes a honeycomb substrate and an ozone decomposition catalyst attached to the honeycomb substrate. The available ozone decomposing catalyst is one obtained by loading transition metal oxide onto porous Si-Al carrier; mixing Co3O4A catalyst obtained by loading on zeolite; loading NiO to Y-Al2O3The catalyst obtained above; loading noble metals such as Pt, Pd, Rh, etc. on Al2O3The catalyst formed above; containing TiO2The catalyst has good catalytic performance. Further, the ozone decomposition catalytic element 60 may be designed as a drawer structure that can be detached from the outside of the housing 10 and inserted into the housing 10 by sliding, so as to facilitate the installation and replacement of the ozone decomposition catalytic element 60.
As a modification of this embodiment, the welding exhaust gas treatment device 100 further includes a soot blower including an air compressor (not shown) and a soot blowing assembly 101 connected to the air compressor, and the soot blowing assembly 101 has an air nozzle 1011 for blowing air into the inner cavity of the filter cartridge 30. The soot blower can blow down the soot particles adsorbed on the filter element 40 to the dust collecting member 70, so that the filter element 40 can obtain a good adsorption effect.
As a modification of this embodiment, the welding exhaust gas treatment apparatus 100 further includes a flame arrester 102 disposed in the first chamber 111 below the gas inlet 13. By providing flame arrestor 102, flame propagation of flammable gases and particulates can be prevented from damaging filter cartridge 30 or welding exhaust treatment device 100, extending the useful life of the device.
As a modification of this embodiment, the welding exhaust gas treatment apparatus 100 further includes an air intake pipe 103 connected to the air inlet 13, and the air intake pipe 103 is a universal pipe. The suction pipe 103 is provided as a universal pipe to facilitate connection of the welding exhaust gas treatment apparatus 100 and the welding apparatus.
As an improvement of this embodiment, the welding waste gas treatment equipment 100 further includes a cabinet door 104, and when the equipment is in operation, the cabinet door 104 is in a closed state, and when dust needs to be cleaned or a component needs to be replaced and maintained, the cabinet door 104 is opened to draw out the dust collecting member 70 for cleaning, or the component needs to be directly replaced and maintained.
The utility model discloses a welding exhaust-gas treatment equipment 100 has two kinds of mode:
first, the ultraviolet lamp 50 emits ultraviolet light having a wavelength of 254 nm. In operation, fan 20 is turned on and welding fumes are delivered through suction duct 103 past flame arrestor 102 to prevent flame propagation of flammable gases and particulates that could damage filter cartridge 30 or equipment. Then, the welding fume passes through the filter element 40, most of particulate matters in the welding fume are filtered by the filter element 40, and when the filter element 40 is adsorbed to a certain degree, the soot blower is manually operated to blow down the fume particles on the filter element 40 and drop the fume particles into the dust collecting part 70; the photocatalytic component 32 generates hydroxyl free radicals through a series of reactions under the irradiation of a 254nm ultraviolet lamp, and the hydroxyl free radicals and organic gas and NO in welding smokeX、SO2And CO and other waste gases react to purify the waste gases; the purified exhaust gas continues to pass through the filter element 90 to filter out soot particles in the welding soot that are not completely filtered by the filter element 40 and soot particles that escape during blowing by the soot blower; the filtered exhaust gas is catalytically decomposed by ozone through the ozone decomposition catalyst 60, and finally discharged from the outlet end 14.
Secondly, the ultraviolet lamp 50 can emit ultraviolet light with a wavelength of 254nm and a wavelength of 185nm at the same time, and during operation, the fan 20 is started, welding smoke is conveyed through the air suction pipe 103 and passes through the flame arrester 102, and flame spread of flammable gas and particles is prevented from damaging the filter cylinder 30 or equipment. The welding fumes then pass through filter element 40, which filter out the weld 40When the filter element 40 adsorbs to a certain degree, most of the particles in the smoke are blown off by the manual soot blower and fall into the dust collecting part 70; on one hand, the ultraviolet lamp 50 emits ultraviolet light with a wavelength of 185nm to decompose ozone to generate atomic oxygen, the generated atomic oxygen can react with water molecules in gas to generate hydroxyl radicals with extremely strong oxidizing power, and on the other hand, the photocatalytic component 32 generates hydroxyl radicals through a series of reactions under the irradiation of the 254nm ultraviolet lamp, and the hydroxyl radicals react with organic gas and NO in welding smoke dustX、SO2And CO and other waste gases react to purify the waste gases; the purified exhaust gas continues to pass through the filter element 90 to filter out soot particles in the welding soot that are not completely filtered by the filter element 40 and soot particles that escape during blowing by the soot blower; the filtered exhaust gas is catalytically decomposed by ozone through the ozone decomposition catalyst 60, and finally discharged from the outlet end 14.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A welding exhaust gas treatment apparatus, comprising:
the device comprises a shell, a first cavity and a second cavity, wherein the shell is provided with an accommodating cavity which is divided into the first cavity and the second cavity by a partition plate, and the shell is provided with an air inlet communicated with the first cavity and an air outlet communicated with the second cavity;
the fan is arranged at the air inlet, the air outlet or the accommodating cavity to drive the gas to be treated to enter the accommodating cavity from the air inlet and flow out from the air outlet;
the filter cartridge is provided with an opening at one end, is arranged in the first chamber and is communicated with the second chamber, the side wall of the filter cartridge is provided with a filter hole in a penetrating way, and the inner side wall of the filter cartridge is provided with a photocatalytic component;
the filter element is sleeved outside the filter cylinder;
an ultraviolet lamp extending partially into the interior chamber of the filter cartridge;
an ozone decomposition catalyst disposed in the second chamber to eliminate ozone in the gas flowing through the second chamber.
2. The welding exhaust gas treatment device according to claim 1, wherein the ultraviolet lamp is a two-band ultraviolet lamp, one of which has a wavelength of 185nm and the other of which has a wavelength of 254 nm; and/or the presence of a gas in the atmosphere,
the photocatalytic component is a metal wire mesh structure coated with a photocatalyst or a fiber cotton structure coated with a photocatalyst, and is spread and laid on the inner side wall of the filter cylinder.
3. The welding exhaust-gas treatment equipment of claim 1, characterized in that the baffle includes a horizontal plate and a vertical plate that are connected in an L-shape, the vertical plate is arranged with one of the inside walls of the casing at an interval, a through hole is opened on the vertical plate, and the filter cartridge is detachably mounted on the vertical plate in a manner that the opening is aligned with the through hole.
4. The welding exhaust gas treatment device according to claim 3, further comprising a dust collection member provided on a side of the cross plate facing the filter element for collecting dust, wherein the dust collection member is a drawer-type structure that is detachably and slidably inserted into the housing from outside the housing.
5. The welding exhaust gas treatment device according to claim 1, further comprising a horizontal plate disposed in the second chamber, wherein a plurality of ventilation holes are formed through the horizontal plate, and the ozone decomposition catalytic member is disposed on a side of the horizontal plate facing the filter element in a stacked manner.
6. The welding exhaust gas treatment device according to claim 5, further comprising a filter member for adsorbing soot particles, the filter member being detachably attached to a side of the ozone decomposition catalyst member remote from the horizontal plate.
7. The welding exhaust gas treatment device according to claim 6, wherein the filter member is a drawer-type structure that is removably and slidably inserted and mounted in the housing from outside the housing; and/or the presence of a gas in the atmosphere,
the ozone decomposition catalytic component is a drawer type structure which can be disassembled from the shell and is inserted and installed in the shell in a sliding card mode.
8. The welding exhaust gas treatment device according to any one of claims 1 to 7, wherein the ozone decomposition catalyst member includes a body that is distributed over honeycomb holes and a granular ozone decomposition catalyst that is installed in the honeycomb holes; alternatively, the first and second electrodes may be,
the ozone decomposition catalytic member comprises an active carbon fiber net and an ozone decomposition catalyst attached to the active carbon fiber net; alternatively, the first and second electrodes may be,
the ozone decomposition catalyst member includes a honeycomb substrate and an ozone decomposition catalyst attached to the honeycomb substrate.
9. The welding exhaust gas treatment device according to any one of claims 1 to 7, further comprising a soot blower including an air compressor and a soot blowing assembly connected to the air compressor, the soot blowing assembly having an air nozzle for blowing air into the interior cavity of the filter cartridge.
10. The welding exhaust gas treatment device according to any one of claims 1 to 7, further comprising a flame arrestor disposed within the first chamber below the gas inlet; and/or the presence of a gas in the atmosphere,
the welding waste gas treatment equipment also comprises an air suction pipe connected with the air inlet, and the air suction pipe is a universal pipe; and/or the presence of a gas in the atmosphere,
the air inlet set up in the top of casing, the gas outlet set up in a side of casing just is close to the bottom setting of casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920229049.2U CN210057892U (en) | 2019-02-20 | 2019-02-20 | Welding waste gas treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920229049.2U CN210057892U (en) | 2019-02-20 | 2019-02-20 | Welding waste gas treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210057892U true CN210057892U (en) | 2020-02-14 |
Family
ID=69432689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920229049.2U Active CN210057892U (en) | 2019-02-20 | 2019-02-20 | Welding waste gas treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210057892U (en) |
-
2019
- 2019-02-20 CN CN201920229049.2U patent/CN210057892U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207815524U (en) | A kind of air purifier having except ozone function | |
| CN202294172U (en) | Vehicle-mounted sky-light window air purifying device | |
| CN107115790A (en) | A kind of VOCs emission-control equipments | |
| CN103900132A (en) | Compound type cooking fume purifier with coupling function | |
| CN204447570U (en) | A kind of photochemical catalytic oxidation waste gas treatment equipment | |
| CN101837243B (en) | Cigarette smoke purifying device used at public places | |
| CN207970701U (en) | A kind of waste gas purification apparatus | |
| CN107930364A (en) | A kind of cleaning system for microparticle and the mixture of volatile organic gases | |
| CN104197425A (en) | Indoor air purification device | |
| CN207970699U (en) | A kind of combined type exhaust gas purification device | |
| CN111939723A (en) | Volatile organic compound adsorption purification and catalytic regeneration integrated device | |
| CN209917632U (en) | Low concentration VOCs organic waste gas purifying equipment | |
| CN110227346A (en) | A kind of leather and fur products exhaust treatment system | |
| CN108993141A (en) | A kind of emission-control equipment | |
| CN206082107U (en) | Industry organic waste gas purification device | |
| CN210057892U (en) | Welding waste gas treatment equipment | |
| CN210425205U (en) | High-efficient comprehensive filtration formula kitchen oil smoke clarifier | |
| CN210251748U (en) | Waste gas purifying equipment | |
| JPH11221442A (en) | Composite deodorizing and dust collecting filter | |
| CN209791269U (en) | Circulated exhaust treatment device | |
| CN111457505A (en) | Sterilization and peculiar smell removal all-in-one machine | |
| CN208512274U (en) | A kind of off-gas cleaning equipment | |
| CN207970679U (en) | A kind of waste gas purification apparatus | |
| CN208320426U (en) | A kind of plasma UV composite waste gas equipment | |
| CN207102274U (en) | Gas cleaning plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |