CN111687160B - High blast volume low pressure formula central authorities dust arrester - Google Patents
High blast volume low pressure formula central authorities dust arrester Download PDFInfo
- Publication number
- CN111687160B CN111687160B CN202010509336.6A CN202010509336A CN111687160B CN 111687160 B CN111687160 B CN 111687160B CN 202010509336 A CN202010509336 A CN 202010509336A CN 111687160 B CN111687160 B CN 111687160B
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- Prior art keywords
- pipe
- filter box
- base
- air
- low pressure
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- Expired - Fee Related
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- 239000000428 dust Substances 0.000 title claims abstract description 65
- 230000001681 protective effect Effects 0.000 claims abstract description 42
- 229920000742 Cotton Polymers 0.000 claims description 10
- 241000219146 Gossypium Species 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 2
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 2
- 239000011425 bamboo Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 241001330002 Bambuseae Species 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 239000013618 particulate matter Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000004887 air purification Methods 0.000 description 2
- -1 metallurgy Substances 0.000 description 2
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/002—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to the technical field of production of central dust collectors, in particular to a high-air-volume low-pressure central dust collector which comprises a base, wherein a protective shell is sleeved on the base, a filter box is arranged on the upper surface of the base, which is close to the left side, an air suction pump is communicated with the interior of the filter box through a connecting pipe, a dust collecting barrel is arranged at the right end of the filter box, a buffer pipe is arranged above the dust collecting barrel, a shielding cap is arranged at the central position of the lower surface of a barrel cover, a bent pipe is arranged at the top of the buffer pipe, and a fan, a support frame and a motor are sequentially arranged in the middle of the end part of the bent pipe from left to right; this high amount of wind low pressure formula central authorities dust arrester, internally mounted fan and motor, the absorption outside air of the high amount of wind in the traction tube of being convenient for, most used under sheltering from the cap, the large granule thing drops in the dust collection section of thick bamboo, prevents that big particulate matter from colliding everywhere, and the absorptive air admission of part filters the box, and under the filter pulp effect, the inside air of aspiration pump extraction lets the air pass through from filter pulp, and the fan cooperates jointly with the aspiration pump, lets collection dirt speed faster.
Description
Technical Field
The invention relates to the technical field of central dust collector production, in particular to a high-air-volume low-pressure central dust collector.
Background
The central dust collector is widely applied to various industries such as electronics, chemical industry, medicine, food, machinery, cement, metallurgy, plastics, grinding materials and the like to collect dust, particulate matters, metal scraps and the like; absorbing dust particles and impurities in the air by using a central dust collector, and collecting and storing the dust particles and the impurities;
among the prior art, lack a high amount of wind low pressure formula central dust collector, general central dust collector utilizes the suction fan to carry out the extraction air that corresponds, gets rid of the filtration with the air absorption, and general device absorbs air velocity slowly, does not have high amount of wind low pressure formula, lets the extraction air quicker, lets filtration faster, the better filtered gas of being convenient for to collect dust particle in the air, air purification with higher speed.
Disclosure of Invention
The present invention is directed to a high air volume low pressure central dust collector to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a high air volume low pressure type central dust collector comprises a base, wherein a protective shell is sleeved on the base, a protective cover is arranged on the front end face of the protective shell, a filter box is arranged on the upper surface of the base close to the left side, the interior of the filter box is hollow, a box cover is arranged at the top of the filter box, a plurality of filter cottons are arranged inside the filter box, an air pump is arranged at the left end of the filter box and communicated with the interior of the filter box through a connecting pipe, an exhaust pipe is arranged at the other end of the air pump, the end part of the exhaust pipe extends out of the protective shell, a dust collecting barrel is arranged at the right end of the filter box, the interior of the dust collecting barrel is hollow, a buffer pipe is arranged above the dust collecting barrel, a barrel cover is arranged below the buffer pipe, a blocking cap is arranged at the central position of the lower surface of the barrel cover and is funnel-shaped, and the blocking cap is connected with the barrel cover through a connecting post, the improved fan-motor buffer tube is characterized in that a bent tube is arranged at the top of the buffer tube, a fan, a support frame and a motor are sequentially arranged in the middle of the end part of the bent tube from left to right, a protective shell extends out of the tail end of the bent tube, a traction tube is arranged at the position, corresponding to the bent tube, of the right side surface of the protective shell, and a fixing seat is arranged at the left end of the traction tube.
Preferably, protective housing and base are integrated into one piece structure, the protective cover passes through bolt and protective housing fixed connection.
Preferably, the filter box is fixedly bonded with the base, the air pump is fixedly connected with the base through a bolt, and the dust collection cylinder is fixedly bonded with the base.
Preferably, the box cover is fixedly connected with the filter box through bolts, the filter cotton is distributed at equal intervals, and the filter cotton is fixedly bonded with the filter box.
Preferably, the exhaust pipe is fixedly connected with the air pump through a bolt, and the tail end of the air pump is fixedly bonded with the protective shell.
Preferably, the right end of the filter box is communicated with the interior of the dust collecting barrel through a communicating pipe.
Preferably, the barrel cover and the buffer tube are of an integrally formed structure, the diameter of the barrel cover is matched with that of the dust collection barrel, one end of the connecting column is welded and fixed with the shielding cap, the other end of the connecting column is fixedly connected with the barrel cover through a bolt, and the top of the shielding cap extends into the buffer tube.
Preferably, the elbow is welded and fixed with the buffer tube, the top of the elbow is in a circular truncated cone shape, and the top of the elbow is fixedly bonded with the protective shell.
Preferably, the support frame is fixedly connected with the bent pipe through a bolt, the motor is fixed on the support frame through a bolt, an output shaft of the motor penetrates through the support frame, and the output shaft of the motor is coaxially connected with the fan.
Preferably, the traction tube and the fixing seat are of an integrally formed structure, and the fixing seat is fixedly connected with the protective shell through a bolt.
Compared with the prior art, the invention has the beneficial effects that:
the protective shell and the protective cover are matched for use, so that parts in the whole device can be protected conveniently, the whole device can adapt to different fields conveniently, air purification and dust collection treatment can be well carried out, the end part of the bent pipe is funnel-shaped, and a fan and a motor are arranged in the buffer tube, so that a large amount of outside air can be absorbed from the traction tube, the gas absorbed by mixed impurities enters the buffer tube, large particles fall into the dust collecting barrel under the most using part of the shielding cap, the shielding cap relieves the convection of the air in the dust collecting barrel, prevents the large particles from colliding everywhere, and prevents partial absorbed air from entering the filter box, under the filter pulp effect, the aspiration pump extracts inside air, under the different states of internal and external pressure, lets the air pass through from the filter pulp, filters the tiny impurity that contains, and the gas after the filtration is got rid of from the blast pipe, and the fan cooperates jointly with the aspiration pump, and it is faster to let the collection dirt speed.
Drawings
FIG. 1 is a schematic view of the overall structure of a high air volume low pressure type central dust collector of the present invention;
FIG. 2 is a schematic view of an open structure of a protective cover of a high-air-volume low-pressure central dust collector according to the present invention;
FIG. 3 is a schematic view of a partial frame structure of a high-air-volume low-pressure central dust collector according to the present invention;
FIG. 4 is a schematic view of the base, the air pump, the filter box and the dust collecting barrel of the present invention;
FIG. 5 is a schematic view of the buffer tube and elbow and fan assembly of the present invention;
fig. 6 is a schematic sectional view of a high air volume low pressure central dust collector according to the present invention.
The various reference numbers in the figures mean:
1. a base;
2. a protective housing; 20. a protective cover;
3. a traction tube; 30. a fixed seat;
4. a filter cartridge; 40. a box cover; 41. filtering cotton;
5. an air pump; 50. an exhaust pipe;
6. a dust collecting cylinder;
7. a buffer tube; 70. a cylinder cover; 71. a blocking cap; 710. connecting columns;
8. bending a pipe; 80. a fan; 81. a support frame; 82. an electric motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 1-6, the present invention provides a technical solution:
a high air volume low pressure type central dust collector comprises a base 1, a protective shell 2 is sleeved on the base 1, a protective cover 20 is arranged on the front end face of the protective shell 2, a filter box 4 is arranged on the upper surface of the base 1 close to the left side, the interior of the filter box 4 is hollow, a box cover 40 is arranged on the top of the filter box 4, a plurality of filter cottons 41 are arranged in the filter box 4, an air pump 5 is arranged at the left end of the filter box 4, the air pump 5 is communicated with the interior of the filter box 4 through a connecting pipe, an exhaust pipe 50 is arranged at the other end of the air pump 5, the end part of the exhaust pipe 50 extends out of the protective shell 2, a dust collecting barrel 6 is arranged at the right end of the filter box 4, the interior of the dust collecting barrel 6 is hollow, a buffer pipe 7 is arranged above the dust collecting barrel 6, a barrel cover 70 is arranged below the buffer pipe 7, a blocking cap 71 is arranged at the central position of the lower surface of the barrel cover 70, the blocking cap 71 is funnel-shaped, and the blocking cap 71 is connected with the barrel cover 70 through a connecting post 710, buffer tube 7 top is equipped with return bend 8, is equipped with fan 80, support frame 81, motor 82 from a left side to the right side in proper order in the middle of the 8 tip of return bend, and 8 end extensions of return bend 2, the position that the 2 right flank of protective housing and return bend 8 correspond is equipped with traction tube 3, and the 3 left ends of traction tube are equipped with fixing base 30.
In this embodiment, protective housing 2 and base 1 are integrated into one piece structure, and protective cover 20 passes through bolt and protective housing 2 fixed connection, and protective cover 20 adds and establishes, and the person of being convenient for manually opens, clears up inside filter cartridge 4 and a dust collection section of thick bamboo 6.
Further, the filter box 4 is fixedly bonded with the base 1, the air pump 5 is fixedly connected with the base 1 through bolts, the dust collecting cylinder 6 is fixedly bonded with the base 1, the air pump 5 pumps air inside, and the air sucked through the filter cotton 41 passes through the air pump 5 for filtering under the difference of internal and external pressure, and the air pump 5 accelerates the flow of the air inside.
Secondly, lid 40 passes through bolt and filter cartridge 4 fixed connection, and filter pulp 41 is equidistant distribution, and filter pulp 41 bonds fixedly with filter cartridge 4, and a plurality of filter pulp 41 sets up, lets inside filtration more complete.
Further, the exhaust pipe 50 is fixedly connected with the air pump 5 through bolts, the tail end of the air pump 5 is fixedly bonded with the protective shell 2, and the exhaust pipe 50 is convenient for stably exhausting the gas extracted by the air pump 5.
Secondly, the right end of the filter box 4 is communicated with the inside of the dust collecting barrel 6 through a communicating pipe, and the filter box and the dust collecting barrel are communicated with each other through the communicating pipe, so that air can be better conveyed and transferred.
It should be noted that the barrel cover 70 and the buffer tube 7 are of an integrally formed structure, the diameter of the barrel cover 70 is matched with the diameter of the dust collection barrel 6, one end of the connecting post 710 is welded and fixed with the shielding cap 71, the other end of the connecting post 710 is fixedly connected with the barrel cover 70 through a bolt, the top of the shielding cap 71 extends into the buffer tube 7, the shielding cap 71 has the function of slowing down convection of internal air, large-particle dust falls into the dust collection barrel 6, collision among the buffer tube 7 is prevented, and the buffer tube 7 is damaged after long-term use.
Secondly, return bend 8 and buffer tube 7 butt fusion are fixed, and 8 tops of return bend are the round platform form, and 8 tops of return bend are fixed with protective housing 2 bonding, are convenient for install fan 80, improve the amount of wind, let the absorption of air more quick.
Further, support frame 81 passes through bolt fixed connection with return bend 8, and motor 82 passes through the bolt fastening on support frame 81, and support frame 81 is passed to the output shaft of motor 82, and motor 82's output shaft and fan 80 coaxial coupling, and fan 80 and motor 82 cooperate, promote the induced draft, let the outside air can be absorbed the filtration fast, carry out the collection dirt that corresponds and handle.
Besides, traction tube 3 and fixing base 30 are integrated into one piece structure, and fixing base 30 passes through bolt and protective housing 2 fixed connection, and traction tube 3 sets, is convenient for correspond whole device and absorbs different positions air, has the independence.
When the high air volume low pressure type central dust collector of the embodiment is used, a user installs the whole device at a required position, the front end of the traction pipe 3 is butted with a required container or room, the traction pipe is connected with the elbow pipe 8 in a butt joint manner under the connection of the fixed seat 30, the motor 82 is connected with an external power supply, the motor 82 drives the fan 80 to rotate the rod, external air is continuously sucked, the air volume is increased to convey, the sucked air enters the buffer pipe 7, large particles in the air enter the dust collecting barrel 6 under the shielding of the shielding cap 71, the buffer pipe 7 is prevented from being collided and damaged, the filter box 4 is communicated with the dust collecting barrel 6, part of fine dust enters the filter box 4, the air suction pump 5 is connected with the external power supply, pressure difference is formed in the filter box 4, the air rapidly passes through the filter cotton 41, impurities in the air are filtered, and the filtered air is discharged from the exhaust pipe 50, the air pump 5 is matched with the fan 80 for use, so that the whole device can rapidly collect dust under high wind and low pressure, and the dust collecting time is shortened.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a high amount of wind low pressure formula central dust collector, includes base (1), its characterized in that: the dust collector is characterized in that a protective shell (2) is sleeved on the base (1), a protective cover (20) is arranged on the front end face of the protective shell (2), a filter box (4) is arranged on the upper surface of the base (1) close to the left side, the inside of the filter box (4) is hollow, a box cover (40) is arranged at the top of the filter box (4), a plurality of filter cottons (41) are arranged inside the filter box (4), an air suction pump (5) is arranged at the left end of the filter box (4), the air suction pump (5) is communicated with the inside of the filter box (4) through a connecting pipe, an exhaust pipe (50) is arranged at the other end of the air suction pump (5), the end of the exhaust pipe (50) extends out of the protective shell (2), a dust collection barrel (6) is arranged at the right end of the filter box (4), the inside of the dust collection barrel (6) is hollow, a buffer pipe (7) is arranged above the dust collection barrel (6), a barrel cover (70) is arranged below the buffer pipe (7), the shielding cap (71) is arranged at the center of the lower surface of the barrel cover (70), the shielding cap (71) is funnel-shaped, the shielding cap (71) is connected with the barrel cover (70) through a connecting column (710), a bent pipe (8) is arranged at the top of the buffer pipe (7), a fan (80), a supporting frame (81) and a motor (82) are sequentially arranged in the middle of the end part of the bent pipe (8) from left to right, a protective shell (2) extends out of the tail end of the bent pipe (8), a traction pipe (3) is arranged at the position, corresponding to the bent pipe (8), of the right side surface of the protective shell (2), and a fixing seat (30) is arranged at the left end of the traction pipe (3);
the box cover (40) is fixedly connected with the filter box (4) through bolts, the filter cotton (41) is distributed at equal intervals, and the filter cotton (41) is fixedly bonded with the filter box (4);
the barrel cover (70) and the buffer tube (7) are of an integrally formed structure, the diameter of the barrel cover (70) is matched with that of the dust collection barrel (6), one end of the connecting column (710) is fixedly welded with the shielding cap (71), the other end of the connecting column (710) is fixedly connected with the barrel cover (70) through a bolt, and the top of the shielding cap (71) extends into the buffer tube (7);
the exhaust pipe (50) is fixedly connected with the air pump (5) through bolts, and the tail end of the air pump (5) is fixedly bonded with the protective shell (2);
the right end of the filter box (4) is communicated with the interior of the dust collecting cylinder (6) through a communicating pipe.
2. A high air volume low pressure central dust collector as claimed in claim 1, wherein: protective housing (2) and base (1) are integrated into one piece structure, protective cover (20) pass through bolt and protective housing (2) fixed connection.
3. A high air volume low pressure type central dust collector as claimed in claim 1, wherein: the filter box (4) is fixedly bonded with the base (1), the air pump (5) is fixedly connected with the base (1) through bolts, and the dust collection cylinder (6) is fixedly bonded with the base (1).
4. A high air volume low pressure type central dust collector as claimed in claim 1, wherein: the bent pipe (8) is fixedly welded with the buffer pipe (7), the top of the bent pipe (8) is in a round table shape, and the top of the bent pipe (8) is fixedly bonded with the protective shell (2).
5. A high air volume low pressure central dust collector as claimed in claim 1, wherein: support frame (81) and return bend (8) pass through bolt fixed connection, motor (82) pass through the bolt fastening on support frame (81), support frame (81) are passed to the output shaft of motor (82), just the output shaft and fan (80) coaxial coupling of motor (82).
6. A high air volume low pressure central dust collector as claimed in claim 1, wherein: the traction tube (3) and the fixing seat (30) are of an integrally formed structure, and the fixing seat (30) is fixedly connected with the protective shell (2) through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010509336.6A CN111687160B (en) | 2020-06-08 | 2020-06-08 | High blast volume low pressure formula central authorities dust arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010509336.6A CN111687160B (en) | 2020-06-08 | 2020-06-08 | High blast volume low pressure formula central authorities dust arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111687160A CN111687160A (en) | 2020-09-22 |
| CN111687160B true CN111687160B (en) | 2022-09-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010509336.6A Expired - Fee Related CN111687160B (en) | 2020-06-08 | 2020-06-08 | High blast volume low pressure formula central authorities dust arrester |
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| Country | Link |
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| CN (1) | CN111687160B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702590B (en) * | 2021-09-02 | 2023-05-05 | 廊坊易旺科技有限公司 | High-precision air negative (oxygen) ion comprehensive detector |
| CN114768402A (en) * | 2022-05-27 | 2022-07-22 | 安徽天顺环保设备股份有限公司 | Negative pressure large cloth bag dust removal device for industrial silicon ore heat furnace |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2399255B1 (en) * | 2012-12-14 | 2014-01-28 | Kiro Robotics, S.L. | Laminar air flow cabinet |
| CN103071659A (en) * | 2012-12-27 | 2013-05-01 | 肇庆理士电源技术有限公司 | Dust removing system and auxiliary dust removing device |
| KR20170105898A (en) * | 2016-03-10 | 2017-09-20 | 주식회사 정진하이테크 | Industrial Dust Collector |
| CN206545986U (en) * | 2017-03-14 | 2017-10-10 | 河海大学 | A kind of interior decoration air pollution processing unit |
| CN107413806A (en) * | 2017-05-05 | 2017-12-01 | 厦门利德宝电子科技股份有限公司 | Suitable for the central dust-collection system of wiring board difference workshop dedusting demand |
| CN209865644U (en) * | 2019-01-18 | 2019-12-31 | 湖北天利化建工程有限公司 | Welding fume purification device |
| CN109876575B (en) * | 2019-02-11 | 2024-08-09 | 深圳国技仪器有限公司 | Smoke filter and smoke and dust sampling equipment |
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2020
- 2020-06-08 CN CN202010509336.6A patent/CN111687160B/en not_active Expired - Fee Related
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| CN111687160A (en) | 2020-09-22 |
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Granted publication date: 20220927 |