CN111558273B - Special high-efficient gas cleaning device of steam generator - Google Patents
Special high-efficient gas cleaning device of steam generator Download PDFInfo
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- CN111558273B CN111558273B CN202010280790.9A CN202010280790A CN111558273B CN 111558273 B CN111558273 B CN 111558273B CN 202010280790 A CN202010280790 A CN 202010280790A CN 111558273 B CN111558273 B CN 111558273B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention discloses a special high-efficiency flue gas purification device for a steam generator, which comprises a liquid supply unit, a first substrate and a second substrate, wherein the first substrate is provided with a first cabin, and the second substrate is provided with a second cabin which can be inserted into the first cabin; a first cylinder is fixed at the first base plate, the bottom end of the first cylinder is fixed on the first base plate, a first movable plate is fixed at the movable end of the first cylinder, a plurality of first through holes are formed in the top of the first cabin, and a plurality of second through holes are formed in the top of the second cabin; a plurality of first purification units are fixed on the first movable plate; one side of the second movable plate is hinged with one side of the first movable plate, and a plurality of second purification units are fixed on the second movable plate; the first nozzle of the first purifying unit and the second nozzle of the second purifying unit are supplied with liquid by the liquid supply unit. The smoke purification device can realize the motorization, and has good purification effect after field installation.
Description
Technical Field
The invention relates to the field of flue gas purification, in particular to a special efficient flue gas purification device for a steam generator.
Background
The steam generator is also called as a gas injection boiler and mainly comprises three major sections, namely a radiation section, a convection section and a transition section, a three major system and three auxiliary machines; three major systems are a water vapor system, a combustion system and an automatic control system; three auxiliary machinery systems are a high-pressure feed water pump, a burner and a blower. The tail gas discharged by the steam generator contains gaseous and solid pollutants. The gaseous pollutants contain NOX, CO, SO2, HC, etc. Therefore, when the steam generator is used, the flue gas purification is required on site, but the requirement of the flue gas purification on site changes, so that the traditional flue gas purification device with large volume cannot meet the requirement of use during fixation. The vehicle-mounted smoke purification device is still short of mature and ready-made schemes.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides a special high-efficiency flue gas purification device for a steam generator.
The technical scheme is as follows: a special efficient flue gas purification device for a steam generator comprises a liquid supply unit, a first substrate and a second substrate, wherein a slide rail is arranged at the first substrate, a slide groove matched with the slide rail is arranged at the second substrate, a first cabin is arranged at the first substrate, an air inlet is formed in the first cabin, a second cabin capable of being inserted into the first cabin is arranged at the second substrate, and an air outlet is formed in the second cabin; a first cylinder is fixed at the first base plate, the bottom end of the first cylinder is fixed on the first base plate, a first movable plate is fixed at the movable end of the first cylinder, a second cylinder is fixed at the second base plate, the cylinder body of the second cylinder is fixed with the second base plate, a supporting leg is fixed at the movable end of the second cylinder, a plurality of first through holes are formed in the top of the first cabin, and a plurality of second through holes are formed in the top of the second cabin; a plurality of first purification units are fixed at the first movable plate, each first purification unit comprises a first U-shaped frame and a first spoiler, a plurality of first nozzles are arranged at the first U-shaped frame, the number of the first purification units is equal to that of the first through holes, the first purification units and the first through holes are in one-to-one correspondence, and each first purification unit can be inserted into one first through hole; one side of the second movable plate is hinged with one side of the first movable plate, a plurality of second purifying units are fixed at the second movable plate and comprise second U-shaped frames and second spoilers, a plurality of second nozzles are arranged at the second U-shaped frames, the number of the second purifying units is equal to that of the second through holes, the second purifying units and the second through holes correspond to each other one by one, each second purifying unit can be inserted into one second through hole, and a bearing plate capable of bearing the second movable plate is fixed at the first movable plate; a first fixing ring is fixed at the second substrate, and a second fixing ring is fixed at the second movable plate; the first nozzle of the first purifying unit and the second nozzle of the second purifying unit are supplied with liquid by the liquid supply unit.
Furthermore, a first limiting frame is fixed on the inner side wall of the first cabin, a second limiting frame and a third limiting frame are fixed on the outer side wall of the second cabin, and the first limiting frame is located between the second limiting frame and the third limiting frame.
Further, the flue gas purification device can be in a first state or a second state, in the first state, the third limit frame is abutted against the end part of the first cabin, the second movable plate and the first movable plate are in a turnover state, the surface, far away from the second purification unit, of the second movable plate is abutted against the surface, far away from the first purification unit, of the first movable plate, and each first purification unit is inserted into one first through hole; in the second state, the first limiting frame is abutted with the second limiting frame, the second movable plate and the first movable plate are in the unfolded state, each first purifying unit is inserted into one first through hole, and each second purifying unit is inserted into one second through hole.
Thereby making the flue gas cleaning device in the first state during transportation and making the flue gas cleaning device in the second state during cleaning. And spacing frame plays spacing effect on the one hand, and the first spacing frame of on the other hand and the spacing frame butt of second can also make sealed air leakage of avoiding.
Further, the spoiler comprises a straight rod and a spiral plate fixed on the straight rod; a plurality of supporting legs are further fixed at the first substrate. So that the first substrate can be conveniently fixed on a moving carrier, such as a truck.
Further, first solid fixed ring and the solid fixed ring of second are semi-circular ring, first solid fixed ring is located the one side that first base plate was kept away from to the second base plate, the solid fixed ring of second is located the one side that first fly leaf was kept away from to the second fly leaf.
The first fixing ring and the second fixing ring facilitate the hoisting device to switch the state of the flue gas purification device.
Further, a strip-shaped pillow block capable of being abutted against the top of the second cabin is fixed at the second movable plate, and a first fixing bolt capable of fixing the strip-shaped pillow block and the second cabin is further arranged at the second movable plate.
Further, the first through holes and the second through holes are rectangular through holes, the number of the first through holes is 3, and the number of the second through holes is 2.
The number of the first through holes and the number of the second through holes can be increased or decreased according to the actual purification requirement.
Furthermore, a water receiving hopper is arranged in the first cabin, a water tank is arranged in the second cabin, a filter screen is arranged at the top end of the water tank, and one end of the water receiving hopper close to the second cabin is lower than one end far away from the second cabin; when the flue gas purification device is in a second state, the lower end of the water receiving hopper is positioned above the water tank; the liquid supply unit comprises a circulating pump and a pipeline unit, and the circulating pump is matched with the pipeline unit to pump water in the water tank to the first nozzle and the second nozzle.
Further, the water receiving hopper is fixed with the side face of the first cabin through a fixing support.
Further, the first purifying unit further comprises a first sealing frame capable of abutting against the upper surface of the first chamber; the second purification unit further includes a second sealing frame against which an upper surface of the second chamber can abut.
Furthermore, a second fixing bolt capable of fixing the third limiting frame and the first cabin is further arranged at the third limiting frame; the second movable plate is also provided with a third fixing bolt which can fix the first movable plate and the second movable plate when the first movable plate and the second movable plate are in a folded state.
Further, there are four of the first cylinders;
further, there are 2 second cylinders.
Furthermore, the number of the supporting feet is 4; the supporting legs are provided with fixed mounting holes.
Furthermore, the air inlet and the air outlet are both horn-shaped.
Further, the first purification unit has two first spoilers, and the second purification unit has two second spoilers.
Further, the second movable plate is provided with 2L-shaped reinforcing ribs, and the 2 second purification units are surrounded by the 2L-shaped reinforcing ribs.
Further, the lower surface of the second cabin is provided with a plurality of guide rollers.
Has the advantages that: the flue gas purification device can be effectively suitable for the purification occasions of the steam generator, is convenient to flexibly deploy due to the realization of the motorization, and can realize the adjustment according to the requirements of on-site purification. And can be unfolded after field installation, thereby prolonging the stroke of flue gas purification and having good purification effect on the whole.
Drawings
FIG. 1 is a schematic view of a flue gas cleaning apparatus in a first state;
FIG. 2 is a first process diagram for switching from a first state to a second state;
FIG. 3 is a second process diagram for switching from a first state to a second state;
FIG. 4 is a third process diagram for switching from a first state to a second state;
FIG. 5 is a schematic view of the flue gas cleaning apparatus in a second state;
FIG. 6 is an exploded view of a first perspective component of the flue gas cleaning apparatus;
FIG. 7 is an exploded view of a second perspective component of the flue gas cleaning apparatus;
fig. 8 is an exploded view of a third perspective part of the flue gas cleaning device.
Detailed Description
Reference numerals: 1 a first substrate; 1.1 supporting the feet; 1.2 a first cylinder; 2 a second substrate; 2.1 a first retaining ring; 2.2 a second cylinder; 3 a first compartment; 3.1 a first via; 3.2 receiving the water hopper; 3.3 a first limit frame; 4 a second compartment; 4.1 a second via; 4.2, a water tank; 4.3 a second limit frame; 4.4 third spacing frame; 4.5 guide rollers; 5 a first movable plate; 5.1 a first U-shaped frame; 5.2 a first spoiler; 5.3 carrying plate; 5.4 first sealing frame; 6 a second movable plate; 6.1 a second U-shaped frame; 6.2 a second spoiler; 6.3 second fixed ring; 6.4 pillow blocks; 6.5L-shaped reinforcing ribs; 6.6 second sealing frame.
The following is described in detail with reference to FIGS. 1-8: a special high-efficiency flue gas purification device for a steam generator comprises a liquid supply unit, a first substrate 1 and a second substrate 2, wherein a slide rail is arranged at the position of the first substrate 1, a slide groove matched with the slide rail is arranged at the position of the second substrate 2, a first cabin 3 is arranged at the position of the first substrate 1, an air inlet is formed in the first cabin 3, a second cabin 4 capable of being inserted into the first cabin 3 is arranged at the position of the second substrate 2, and an air outlet is formed in the second cabin 4; a first cylinder 1.2 is fixed at the first substrate 1, the bottom end of the first cylinder 1.2 is fixed on the first substrate 1, a first movable plate 5 is fixed at the movable end of the first cylinder 1.2, a second cylinder 2.2 is fixed at the second substrate 2, the cylinder body of the second cylinder 2.2 is fixed with the second substrate 2, a supporting leg is fixed at the movable end of the second cylinder 2.2, a plurality of first through holes 3.1 are arranged at the top of the first cabin 3, and a plurality of second through holes 4.1 are arranged at the top of the second cabin 4; a plurality of first purification units are fixed on the first movable plate 5, each first purification unit comprises a first U-shaped frame 5.1 and a first spoiler 5.2, a plurality of first nozzles are arranged on the first U-shaped frame 5.1, the number of the first purification units is equal to that of the first through holes 3.1, the first through holes are in one-to-one correspondence, and each first purification unit can be inserted into one first through hole 3.1; one side of the second movable plate 6 is hinged to one side of the first movable plate 5, a plurality of second purification units are fixed at the second movable plate 6 and comprise second U-shaped frames 6.1 and second spoilers 6.2, a plurality of second nozzles are arranged at the second U-shaped frames 6.1, the number of the second purification units is equal to that of the second through holes 4.1, the second purification units and the second through holes are in one-to-one correspondence, each second purification unit can be inserted into one second through hole 4.1, and a bearing plate 5.3 capable of bearing the second movable plate 6 is fixed at the first movable plate 5; a first fixing ring 2.1 is fixed at the second substrate 2, and a second fixing ring 6.3 is fixed at the second movable plate 6; the first nozzle of the first purifying unit and the second nozzle of the second purifying unit are supplied with liquid by the liquid supply unit.
The inside wall of the first cabin 3 is fixed with a first limit frame 3.3, the outside wall of the second cabin 4 is fixed with a second limit frame 4.3 and a third limit frame 4.4, and the first limit frame 3.3 is positioned between the second limit frame 4.3 and the third limit frame 4.4. The flue gas purification device can be in a first state or a second state, in the first state, the third limiting frame 4.4 is abutted with the end part of the first cabin 3, the second movable plate 6 and the first movable plate 5 are in a turnover state, one side, far away from the second purification unit, of the second movable plate 6 is abutted with one side, far away from the first purification unit, of the first movable plate 5, and each first purification unit is inserted into one first through hole 3.1; in the second state, the first limiting frame 3.3 is abutted with the second limiting frame 4.3, the second movable plate 6 and the first movable plate 5 are in the unfolded state, each first purifying unit is inserted into one first through hole 3.1, and each second purifying unit is inserted into one second through hole 4.1. The spoilers 5.2 and 6.2 comprise straight rods and spiral plates fixed on the straight rods; a plurality of supporting feet 1.1 are fixed on the first substrate. First solid fixed ring 2.1 and the solid fixed ring 6.3 of second are semicircular ring, first solid fixed ring 2.1 is located one side that first base plate was kept away from to second base plate 2, the solid fixed ring 6.3 of second is located one side that first fly leaf 5 was kept away from to second fly leaf 6. A strip-shaped pillow block 6.4 capable of abutting against the top of the second cabin 4 is fixed at the second movable plate 6, and a first fixing bolt capable of fixing the strip-shaped pillow block 6.4 and the second cabin 4 is further arranged at the second movable plate 6. First through-hole 3.1 and second through-hole 4.1 are the rectangle through-hole, first through-hole 3.1 has 3, second through-hole 4.1 has 2. A water receiving hopper 3.2 is arranged in the first cabin 3, a water tank 4.2 is arranged in the second cabin 4, a filter screen is arranged at the top end of the water tank 4.2, and one end, close to the second cabin 4, of the water receiving hopper 3.2 is lower than one end, far away from the second cabin 4, of the water receiving hopper; when the flue gas purification device is in the second state, the lower end of the water receiving hopper 3.2 is positioned above the water tank 4.2; the liquid supply unit comprises a circulating pump and a pipeline unit, and the circulating pump is matched with the pipeline unit to pump water in the water tank 4.2 to the first nozzle and the second nozzle. The first purification unit also comprises a first sealing frame 5.4 which can be abutted with the upper surface of the first chamber; the second purification unit also comprises a second sealing frame 6.6 which can be abutted by the upper surface of the second chamber. The third limiting frame 4.4 is also provided with a second fixing bolt capable of fixing the third limiting frame 4.4 and the first cabin 3; the second movable plate is also provided with a third fixing bolt which can fix the first movable plate and the second movable plate when the first movable plate and the second movable plate are in a folded state.
As shown in the figure, in the state of fig. 1, the whole flue gas purification device is in a contracted state, so that the volume is small, the transportation of the flue gas purification device is convenient, and the fixing bolt fixes the position of the second cabin and the position of the second movable plate. When the vehicle arrives at the site for installation, the vehicle can be pulled out of the second cabin step by step as shown in fig. 2-4, and the second cabin is supported by the second cylinder (the second cabin can be pulled out by the external engineering machinery through the first fixing ring, and the guide roller at the second cabin can make the pulling operation more convenient); then, the first cylinder extends to lift the first movable plate, and then engineering machinery (such as a crane or other hoisting equipment) is utilized to turn over the second movable plate through the second fixing ring, and the second movable plate is supported by the bearing plate (the second movable plate is shorter, and the second movable plate is provided with an L-shaped reinforcing rib for increasing the strength); then the first cylinder is shortened, the first purifying unit and the second purifying unit are respectively inserted into the first through hole and the second through hole, and the second movable plate is fixed. Here, the fixing device may be provided to fix the relative position of the second chamber and the first chamber, and the second chamber is heavy and supported by the second cylinder, and may be used normally without the fixing device being provided.
During purification, the flue gas is from the air intake, give vent to anger from the air outlet, at the in-process that flows, is disturbed the flow by the spoiler to sprayed by first, two nozzles, thereby play the purpose that the washing removed dust, the water in the circulating pump pumping water tank sprays, and spray water after, in the water of first cabin flows into the water tank through the water receiving hopper water receiving, in the water direct inflow water tank of second cabin, thereby form endless washing. The cabin of this application is mainly the washing cabin, if the liquid that will spray changes the liquid medicine then can carry out the purification of SOx/NOx control, can improve as required. And because the second cabin can pull to the stroke of flue gas on the whole is longer, thereby purifying effect is better. And the motorization is realized, and the transportation is convenient.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
Claims (7)
1. A special high-efficiency flue gas purification device for a steam generator is characterized by comprising a liquid supply unit, a first substrate and a second substrate, wherein a slide rail is arranged at the first substrate, a slide groove matched with the slide rail is arranged at the second substrate, a first cabin is arranged at the first substrate, an air inlet is formed in the first cabin, a second cabin capable of being inserted into the first cabin is arranged at the second substrate, and an air outlet is formed in the second cabin; a first cylinder is fixed at the first base plate, the bottom end of the first cylinder is fixed on the first base plate, a first movable plate is fixed at the movable end of the first cylinder, a second cylinder is fixed at the second base plate, the cylinder body of the second cylinder is fixed with the second base plate, a supporting leg is fixed at the movable end of the second cylinder, a plurality of first through holes are formed in the top of the first cabin, and a plurality of second through holes are formed in the top of the second cabin; a plurality of first purification units are fixed at the first movable plate, each first purification unit comprises a first U-shaped frame and a first spoiler, a plurality of first nozzles are arranged at the first U-shaped frame, the number of the first purification units is equal to that of the first through holes, the first purification units and the first through holes are in one-to-one correspondence, and each first purification unit can be inserted into one first through hole; one side of the second movable plate is hinged with one side of the first movable plate, a plurality of second purifying units are fixed at the second movable plate and comprise second U-shaped frames and second spoilers, a plurality of second nozzles are arranged at the second U-shaped frames, the number of the second purifying units is equal to that of the second through holes, the second purifying units correspond to the second through holes one by one, each second purifying unit can be inserted into one second through hole, and a bearing plate capable of bearing the second movable plate is further fixed at the first movable plate; a first fixing ring is fixed at the second substrate, and a second fixing ring is fixed at the second movable plate; the first nozzle of the first purifying unit and the second nozzle of the second purifying unit are both supplied with liquid by the liquid supply unit; a first limiting frame is fixed on the inner side wall of the first cabin, a second limiting frame and a third limiting frame are fixed on the outer side wall of the second cabin, and the first limiting frame is positioned between the second limiting frame and the third limiting frame; the flue gas purification device can be in a first state or a second state, in the first state, the third limiting frame is abutted against the end part of the first cabin, the second movable plate and the first movable plate are in a turnover state, the surface, far away from the second purification unit, of the second movable plate is abutted against the surface, far away from the first purification unit, of the first movable plate, and each first purification unit is inserted into one first through hole; in the second state, the first limiting frame is abutted with the second limiting frame, the second movable plate and the first movable plate are in an unfolded state, each first purifying unit is inserted into one first through hole, and each second purifying unit is inserted into one second through hole; a water receiving hopper is arranged in the first cabin, a water tank is arranged in the second cabin, a filter screen is arranged at the top end of the water tank, and one end of the water receiving hopper close to the second cabin is lower than one end far away from the second cabin; when the flue gas purification device is in a second state, the lower end of the water receiving hopper is positioned above the water tank; the liquid supply unit comprises a circulating pump and a pipeline unit, and the circulating pump is matched with the pipeline unit to pump water in the water tank to the first nozzle and the second nozzle.
2. The special high-efficiency flue gas purification device for the steam generator of claim 1, wherein the spoiler comprises a straight rod and a spiral plate fixed on the straight rod; a plurality of supporting legs are further fixed at the first substrate.
3. The steam generator dedicated high-efficiency flue gas purification device according to claim 1, wherein the first fixing ring and the second fixing ring are both semicircular rings, the first fixing ring is located on one side of the second substrate away from the first substrate, and the second fixing ring is located on one side of the second movable plate away from the first movable plate in the second state.
4. The special high-efficiency flue gas purification device for the steam generator of claim 1, wherein a strip-shaped pillow block capable of abutting against the top of the second cabin is fixed at the second movable plate, and a first fixing bolt capable of fixing the strip-shaped pillow block and the second cabin is further arranged at the second movable plate.
5. The special high-efficiency flue gas purification device for the steam generator of claim 1, wherein the first through holes and the second through holes are rectangular through holes, and the number of the first through holes is 3, and the number of the second through holes is 2.
6. The steam generator dedicated high-efficiency flue gas purification device according to claim 1, wherein the first purification unit further comprises a first sealing frame capable of abutting against the upper surface of the first compartment; the second purification unit further includes a second sealing frame capable of abutting against an upper surface of the second chamber.
7. The special high-efficiency flue gas purification device for the steam generator as claimed in claim 1, wherein the third limit frame is further provided with a second fixing bolt capable of fixing the third limit frame and the first cabin; the second movable plate is also provided with a third fixing bolt which can fix the first movable plate and the second movable plate when the first movable plate and the second movable plate are in a folded state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280790.9A CN111558273B (en) | 2020-04-10 | 2020-04-10 | Special high-efficient gas cleaning device of steam generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010280790.9A CN111558273B (en) | 2020-04-10 | 2020-04-10 | Special high-efficient gas cleaning device of steam generator |
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| CN111558273A CN111558273A (en) | 2020-08-21 |
| CN111558273B true CN111558273B (en) | 2022-05-13 |
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| JP2001232131A (en) * | 2000-02-25 | 2001-08-28 | Oki Electric Ind Co Ltd | Removing device for gaseous impurity in air |
| CN107875784A (en) * | 2017-11-24 | 2018-04-06 | 西安立东行智能技术有限公司 | It is a kind of except the trailer and its device of haze |
| CN108118787A (en) * | 2017-12-19 | 2018-06-05 | 杭州营动建筑科技有限公司 | A kind of modularization moves the movable dwellings and caravan that can expand deformation |
| CN207546082U (en) * | 2017-11-30 | 2018-06-29 | 包头铁道职业技术学院 | A kind of electric automatization spray equipment |
| CN108854413A (en) * | 2018-08-29 | 2018-11-23 | 攀枝花市九鼎智远知识产权运营有限公司 | A kind of mine circulation dust collector |
| CN208990449U (en) * | 2018-09-29 | 2019-06-18 | 桐乡市洁安居环保科技有限公司 | A kind of foldable fresh air system filter screen |
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2020
- 2020-04-10 CN CN202010280790.9A patent/CN111558273B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001232131A (en) * | 2000-02-25 | 2001-08-28 | Oki Electric Ind Co Ltd | Removing device for gaseous impurity in air |
| CN107875784A (en) * | 2017-11-24 | 2018-04-06 | 西安立东行智能技术有限公司 | It is a kind of except the trailer and its device of haze |
| CN207546082U (en) * | 2017-11-30 | 2018-06-29 | 包头铁道职业技术学院 | A kind of electric automatization spray equipment |
| CN108118787A (en) * | 2017-12-19 | 2018-06-05 | 杭州营动建筑科技有限公司 | A kind of modularization moves the movable dwellings and caravan that can expand deformation |
| CN108854413A (en) * | 2018-08-29 | 2018-11-23 | 攀枝花市九鼎智远知识产权运营有限公司 | A kind of mine circulation dust collector |
| CN208990449U (en) * | 2018-09-29 | 2019-06-18 | 桐乡市洁安居环保科技有限公司 | A kind of foldable fresh air system filter screen |
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| CN111558273A (en) | 2020-08-21 |
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