CN113695734A - Quick optical fiber laser cutting machine fume extractor - Google Patents
Quick optical fiber laser cutting machine fume extractor Download PDFInfo
- Publication number
- CN113695734A CN113695734A CN202111105532.8A CN202111105532A CN113695734A CN 113695734 A CN113695734 A CN 113695734A CN 202111105532 A CN202111105532 A CN 202111105532A CN 113695734 A CN113695734 A CN 113695734A
- Authority
- CN
- China
- Prior art keywords
- smoke
- box
- cutting machine
- laser cutting
- box body
- 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.)
- Pending
Links
- 238000003698 laser cutting Methods 0.000 title claims abstract description 24
- 239000013307 optical fiber Substances 0.000 title claims abstract description 21
- 239000003517 fume Substances 0.000 title claims description 10
- 239000000779 smoke Substances 0.000 claims abstract description 56
- 238000005507 spraying Methods 0.000 claims abstract description 29
- 238000005192 partition Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 14
- 238000005189 flocculation Methods 0.000 claims description 7
- 230000016615 flocculation Effects 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 16
- 239000002245 particle Substances 0.000 abstract description 14
- 238000000746 purification Methods 0.000 abstract description 8
- 230000036541 health Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000008394 flocculating agent Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/16—Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses smoke exhaust equipment of a rapid optical fiber laser cutting machine, which comprises a box body, wherein a base is fixed at the bottom end of the box body, a partition plate is arranged in the box body, a through hole is formed in the partition plate, and a smoke inlet and a smoke outlet are respectively arranged at two sides of the box body; according to the smoke purifier, large-particle harmful substances in smoke are initially intercepted through the filter screen, small-particle harmful substances in the smoke are secondarily intercepted through the spraying mechanism, so that the smoke is purified more thoroughly, the purification effect is better, the emission standard can be reached, the human health and the ecological environment are protected, the screw rod is driven to rotate by the motor, the threaded block sleeved with the screw rod drives the lifting plate to lift, the cleaning hairbrush is driven to clean the large-particle harmful substances intercepted on the two sides of the filter screen, the blockage problem after long-time use is avoided, and the normal use of the smoke purifier and the purification treatment efficiency of the smoke are ensured.
Description
Technical Field
The invention relates to the technical field of laser cutting equipment, in particular to a quick smoke discharging device of an optical fiber laser cutting machine.
Background
The optical fiber laser cutting machine is a laser cutting machine which uses an optical fiber laser generator as a light source, the optical fiber laser generator is a novel optical fiber laser which is newly developed internationally and outputs a laser beam with high energy density, and the laser beam is gathered on the surface of a workpiece, so that an area irradiated by a superfine focus spot on the workpiece is instantly melted and gasified, the spot irradiation position is moved by a numerical control mechanical system to realize automatic cutting, the optical fiber laser cutting machine can be used for plane cutting and oblique angle cutting, the edge is neat and smooth, the optical fiber laser cutting machine is suitable for high-precision cutting processing of metal plates and the like, compared with a common carbon dioxide laser cutting machine, the space and the gas consumption are saved, and the photoelectric conversion rate is high;
although the optical fiber laser cutting machine has many advantages, smoke is still generated in the cutting process of a workpiece, direct emission not only can affect human health, but also can damage the environment, smoke is required to be treated by smoke exhaust equipment and then is emitted, most of the existing smoke exhaust equipment has a single structure, harmful substances in the smoke cannot be thoroughly purified, the emission standard cannot be met, an internal filtering mechanism is not convenient to clean, and the smoke exhaust equipment is easy to block and affect the purification treatment efficiency after being used for a long time.
Disclosure of Invention
Aiming at the problems, the invention aims to provide rapid smoke exhaust equipment of an optical fiber laser cutting machine, the rapid smoke exhaust equipment of the optical fiber laser cutting machine firstly primarily intercepts large-particle harmful substances in smoke through a filter screen, secondly intercepts small-particle harmful substances in the smoke through a spraying mechanism, further enables the smoke purification treatment to be more thorough, and cleans the large-particle harmful substances intercepted on two sides of the filter screen through a motor cleaning brush, thereby avoiding the blockage problem after long-time use.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: the utility model provides a quick optic fibre laser cutting machine fume extractor, includes the box, the box bottom mounting has the base, the inside baffle that is equipped with of box, the through-hole has been seted up on the baffle, the box both sides are equipped with into mouth and exhaust port respectively, be equipped with the aspirator pump on advancing mouth and the exhaust port respectively and give vent to anger the pump, the lower part that the baffle is close to into mouth one side is fixed with the backup pad, install the filter screen between backup pad top and the inside top of box, the filter screen both sides all are equipped with the rotatory screw rod through motor drive, the screw thread has cup jointed the thread piece on the screw rod, one side that the thread piece is close to the filter screen is fixed with the lifter plate, one side that the lifter plate is close to the filter screen is equipped with clean brush, the upper portion that the baffle is close to exhaust port one side is equipped with sprays the mechanism.
The further improvement lies in that: the spraying mechanism comprises a spraying disc and a spraying pipe, spraying holes are uniformly formed in the bottom end of the spraying disc, the spraying pipe is connected to the top end of the spraying disc, a water storage tank is arranged at the top end of the box body, the spraying disc is communicated with the water storage tank through the spraying pipe, and a booster water pump is mounted on the spraying pipe.
The further improvement lies in that: the inside of the water storage tank is filled with a flocculant solution, one side of the water storage tank, which is close to the smoke outlet, is communicated with the bottom of the tank body through a circulating water pipe, and the circulating water pipe is provided with a circulating water pump.
The further improvement lies in that: the lower part of one side of the partition board close to the smoke outlet is provided with a flow guide funnel, a flocculate filter plate is arranged below the flow guide funnel and is in sliding connection with the box body, and a drawing handle is arranged outside the box body of the flocculate filter plate.
The further improvement lies in that: the supporting plate bilateral symmetry has seted up hourglass useless hole, the supporting plate below is equipped with the useless drawer of collection, the useless drawer of collection and box sliding connection.
The further improvement lies in that: both ends all are fixed with spacing slider around the lifter plate, all set up the spacing spout that matches with spacing slider on the inner wall around the box.
The further improvement lies in that: one side that the box top is close to into the mouth is equipped with the drive box, the drive box top is located to the motor, the output of motor runs through to be connected with the driving gear in the drive box through the bearing, the top of screw rod runs through to be connected with in the drive box through the bearing with driving gear engaged with driven gear.
The invention has the beneficial effects that: the smoke purification device comprises a box body, large-particle harmful substances in smoke are primarily intercepted through a filter screen, small-particle harmful substances in the smoke are secondarily intercepted through a spraying mechanism, smoke purification treatment is thorough, the purification effect is good, the emission standard can be achieved, human health and ecological environment are protected, a screw rod is driven to rotate through a motor, a threaded block sleeved with threads on the screw rod drives a lifting plate to lift, a cleaning brush is driven to clean the large-particle harmful substances intercepted on two sides of the filter screen, the blockage problem after long-time use is avoided, and normal use of smoke exhaust equipment and smoke purification treatment efficiency are guaranteed.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a front cross-sectional view of the present invention;
FIG. 4 is an enlarged view of the invention at A;
fig. 5 is a front sectional view of a second embodiment of the present invention.
Wherein: 1. a box body; 2. a base; 3. a partition plate; 4. a smoke inlet; 5. a smoke outlet; 6. a support plate; 7. a filter screen; 8. a motor; 9. a screw; 10. a thread block; 11. a lifting plate; 12. cleaning the brush; 13. spraying a disc; 14. a shower pipe; 15. a water storage tank; 16. a circulating water pipe; 17. a diversion funnel; 18. a flocculate filter plate; 19. waste leakage holes; 20. a waste collection drawer; 21. a limiting slide block; 22. a limiting chute; 23. a drive cartridge; 24. a driving gear; 25. a driven gear; 26. an induced draft fan; 27. a universal locking wheel; 28. a threaded bushing; 29. a threaded support post; 30. a support pad.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
According to the drawings of fig. 1, 2, 3 and 4, the embodiment provides a rapid smoke exhaust device of an optical fiber laser cutting machine, which comprises a box body 1, wherein a base 2 is fixed at the bottom end of the box body 1, a partition plate 3 is arranged in the box body 1, a through hole is formed in the partition plate 3, a smoke inlet 4 and a smoke outlet 5 are respectively arranged at two sides of the box body 1, an air suction pump and an air outlet pump are respectively arranged on the smoke inlet 4 and the smoke outlet 5, a supporting plate 6 is fixed at the lower part of one side of the partition plate 3 close to the smoke inlet 4, a filter screen 7 is arranged between the top end of the supporting plate 6 and the top end of the interior of the box body 1, screw rods 9 which are driven to rotate by a motor 8 are respectively arranged at two sides of the filter screen 7, threaded blocks 10 are sleeved on the screw rods 9 in a threaded manner, a lifting plate 11 is fixed at one side of the threaded blocks 10 close to the filter screen 7, a cleaning brush 12 is arranged at one side of the lifting plate 11 close to the filter screen 7, the screw rod 9 is driven to rotate by the motor 8, the thread block 10 sleeved by the threads on the screw rod 9 drives the lifting plate 11 to lift, and the cleaning brush 12 is driven to clean large-particle harmful substances intercepted on two sides of the filter screen 7, so that the problem of blockage after long-time use is avoided, and the upper part of the partition plate 3 close to one side of the smoke outlet 5 is provided with a spraying mechanism for removing small-particle harmful substances in smoke.
Spray the mechanism including spraying disc 13 and shower 14, spray disc 13 bottom and evenly seted up the hole that sprays, shower 14 connects in spraying disc 13 top, 1 top of box is equipped with water storage box 15, it communicates with water storage box 15 through shower 14 to spray disc 13, install booster pump on the shower 14, 15 inside packings of water storage box have flocculating agent solution, through booster pump with flocculating agent solution through spraying the disc blowout to make the tiny particle harmful substance in the flue gas subside, circulating pipe 16 and 1 bottom of box intercommunication are passed through to one side that water storage box 15 is close to exhaust port 5, install circulating pump on circulating pipe 16, be convenient for carry out cyclic utilization to flocculating agent solution.
The baffle 3 is close to the lower part of 5 one sides of exhaust port and is equipped with water conservancy diversion funnel 17, water conservancy diversion funnel 17 below is equipped with flocculation filter 18, flocculation filter 18 and box 1 sliding connection, flocculation filter 18 is located the outer pull handle that is equipped with of box 1, is convenient for collect the flocculation thing of interception.
The 6 bilateral symmetry of backup pad has been seted up and has been leaked useless hole 19, 6 below of backup pad is equipped with the useless drawer 20 of collection, the useless drawer 20 of collection and box 1 sliding connection, still be equipped with the chamber door that is located filter screen 7 both sides on the box 1, be convenient for concentrate the collection to the harmful substance that filter screen 7 interception and cleared up down by cleaning brush 12.
Both ends all are fixed with limiting slide block 21 around lifter plate 11, all set up the spacing spout 22 that matches with limiting slide block 21 on the inner wall around the box 1, make the lifter plate 11 lift in-process more stable.
One side that the 1 top of box is close to into smoke mouth 4 is equipped with drive box 23, drive box 23 top is located to motor 8, motor 8's output runs through to drive box 23 in-connection through the bearing has driving gear 24, the top of screw rod 9 runs through to drive box 23 in-connection through the bearing have with driving gear 24 engaged with driven gear 25, drives driven gear 25 through motor 8 drive driving gear 24 and rotates to drive screw rod 9 is rotatory.
Example two
According to fig. 5, install draught fan 26 in the through-hole on the baffle 3, universal locking wheel 27 is installed to base 2 bottom symmetry, makes this equipment be convenient for remove.
The four corners position of base 2 bottom all is connected with threaded sleeve 28 through the bearing, threaded sleeve 28 internal connection has screw thread support column 29, screw thread support column 29 bottom mounting has supporting pad 30, connects the support height through rotating screw thread sleeve 28 accent, makes this equipment more stable.
When the device is used, the smoke inlet 4 is communicated with the smoke outlet of the optical fiber laser cutting machine body, then a flocculating agent solution is added into the water storage tank 15, the booster water pump on the spray pipe 14 is started, the flocculating agent solution is sprayed out through the spray disc 13, then the circulating water pump on the circulating water pipe 16 is started, the flocculating agent solution is recycled, then the suction pump and the air outlet pump on the smoke inlet 4 and the smoke outlet 5 are started simultaneously, the induced draft fan 26 is started, smoke generated by laser cutting is sucked into the box body 1, the smoke firstly intercepts large-particle harmful substances through the filter screen 7 and then is sprayed through the flocculating agent solution, the small-particle harmful substances in the smoke are settled, finally the smoke reaches the emission standard and is discharged through the smoke outlet 5, the motor 8 is started in the using process to drive the lifting plate 11 to drive the cleaning brush 12 to clean the filter screen 7, and blockage is avoided.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a quick optic fibre laser cutting machine fume extractor, includes box (1), its characterized in that: the bottom end of the box body (1) is fixed with a base (2), a partition plate (3) is arranged inside the box body (1), a through hole is formed in the partition plate (3), a smoke inlet (4) and a smoke outlet (5) are respectively arranged on two sides of the box body (1), a suction pump and an air outlet pump are respectively arranged on the smoke inlet (4) and the smoke outlet (5), a support plate (6) is fixed on the lower portion of one side, close to the smoke inlet (4), of the partition plate (3), a filter screen (7) is installed between the top end of the support plate (6) and the top end inside the box body (1), screw rods (9) driven to rotate by a motor (8) are respectively arranged on two sides of the filter screen (7), threaded blocks (10) are sleeved on the screw rods (9), a lifting plate (11) is fixed on one side, close to the filter screen (7), of the lifting plate (11) is provided with a cleaning brush (12), and a spraying mechanism is arranged at the upper part of one side of the partition plate (3) close to the smoke outlet (5).
2. The fume extractor of the rapid optical fiber laser cutting machine according to claim 1, wherein: the spraying mechanism comprises a spraying disc (13) and a spraying pipe (14), the bottom end of the spraying disc (13) is uniformly provided with spraying holes, the spraying pipe (14) is connected to the top end of the spraying disc (13), the top end of the box body (1) is provided with a water storage tank (15), the spraying disc (13) is communicated with the water storage tank (15) through the spraying pipe (14), and the spraying pipe (14) is provided with a booster pump.
3. The fume extractor of the rapid optical fiber laser cutting machine according to claim 2, wherein: the inside of the water storage tank (15) is filled with a flocculant solution, one side of the water storage tank (15) close to the smoke outlet (5) is communicated with the bottom of the tank body (1) through a circulating water pipe (16), and the circulating water pipe (16) is provided with a circulating water pump.
4. The fume extractor of the rapid optical fiber laser cutting machine according to claim 1, wherein: baffle (3) are close to the lower part of exhaust port (5) one side and are equipped with water conservancy diversion funnel (17), water conservancy diversion funnel (17) below is equipped with flocculation filter (18), flocculation filter (18) and box (1) sliding connection, flocculation filter (18) are located the outer pull handle that is equipped with of box (1).
5. The fume extractor of the rapid optical fiber laser cutting machine according to claim 1, wherein: the waste leaking holes (19) are symmetrically formed in the two sides of the supporting plate (6), the waste collecting drawer (20) is arranged below the supporting plate (6), and the waste collecting drawer (20) is in sliding connection with the box body (1).
6. The fume extractor of the rapid optical fiber laser cutting machine according to claim 1, wherein: both ends all are fixed with limiting slide block (21) around lifter plate (11), all set up on the inner wall around box (1) with limiting slide block (21) the spacing spout (22) that match.
7. The fume extractor of the rapid optical fiber laser cutting machine according to claim 1, wherein: one side that box (1) top is close to into mouth of cigarette (4) is equipped with drive box (23), drive box (23) top is located in motor (8), the output of motor (8) runs through to drive box (23) in-connection through the bearing and has driving gear (24), the top of screw rod (9) runs through to drive box (23) in-connection through the bearing have with driven gear (25) of driving gear (24) meshing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105532.8A CN113695734A (en) | 2021-09-22 | 2021-09-22 | Quick optical fiber laser cutting machine fume extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105532.8A CN113695734A (en) | 2021-09-22 | 2021-09-22 | Quick optical fiber laser cutting machine fume extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113695734A true CN113695734A (en) | 2021-11-26 |
Family
ID=78661573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111105532.8A Pending CN113695734A (en) | 2021-09-22 | 2021-09-22 | Quick optical fiber laser cutting machine fume extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113695734A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209490610U (en) * | 2019-01-25 | 2019-10-15 | 王宁 | A kind of desulphurization denitration dedusting pre-processing device |
| CN212915011U (en) * | 2020-07-02 | 2021-04-09 | 玉溪七彩象艺术品有限公司 | Environment-friendly smoke collecting, discharging and dust collecting system in bronze handicraft preparation material melting process |
| CN213105152U (en) * | 2020-08-04 | 2021-05-04 | 青岛中聚能激光科技有限公司 | Fume extractor of laser cutting machine |
| CN213556127U (en) * | 2020-09-09 | 2021-06-29 | 斯玛特(苏州)包装有限公司 | A second grade dust collector for workshop |
| CN213699294U (en) * | 2020-07-10 | 2021-07-16 | 新疆化工设计研究院有限责任公司 | Intelligent environmental protection dust remover |
| CN214051000U (en) * | 2020-11-30 | 2021-08-27 | 广东得盈环保工程有限公司 | An automatic dust removal device capable of gas purification |
| CN214182370U (en) * | 2020-08-25 | 2021-09-14 | 苏州科吉机电有限公司 | Transmission mechanism for exhaust-gas treatment equipment convenient to maintain |
-
2021
- 2021-09-22 CN CN202111105532.8A patent/CN113695734A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209490610U (en) * | 2019-01-25 | 2019-10-15 | 王宁 | A kind of desulphurization denitration dedusting pre-processing device |
| CN212915011U (en) * | 2020-07-02 | 2021-04-09 | 玉溪七彩象艺术品有限公司 | Environment-friendly smoke collecting, discharging and dust collecting system in bronze handicraft preparation material melting process |
| CN213699294U (en) * | 2020-07-10 | 2021-07-16 | 新疆化工设计研究院有限责任公司 | Intelligent environmental protection dust remover |
| CN213105152U (en) * | 2020-08-04 | 2021-05-04 | 青岛中聚能激光科技有限公司 | Fume extractor of laser cutting machine |
| CN214182370U (en) * | 2020-08-25 | 2021-09-14 | 苏州科吉机电有限公司 | Transmission mechanism for exhaust-gas treatment equipment convenient to maintain |
| CN213556127U (en) * | 2020-09-09 | 2021-06-29 | 斯玛特(苏州)包装有限公司 | A second grade dust collector for workshop |
| CN214051000U (en) * | 2020-11-30 | 2021-08-27 | 广东得盈环保工程有限公司 | An automatic dust removal device capable of gas purification |
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| PB01 | Publication | ||
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Application publication date: 20211126 |
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| RJ01 | Rejection of invention patent application after publication |