CN108035766A - A kind of dust-extraction unit administered suitable for Mine Dust - Google Patents
A kind of dust-extraction unit administered suitable for Mine Dust Download PDFInfo
- Publication number
- CN108035766A CN108035766A CN201810069925.XA CN201810069925A CN108035766A CN 108035766 A CN108035766 A CN 108035766A CN 201810069925 A CN201810069925 A CN 201810069925A CN 108035766 A CN108035766 A CN 108035766A
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- CN
- China
- Prior art keywords
- dust
- face
- assemblied
- cleaning case
- ash
- 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.)
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- 238000000605 extraction Methods 0.000 title claims abstract description 25
- 239000000428 dust Substances 0.000 claims abstract description 49
- 230000033001 locomotion Effects 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000007790 scraping Methods 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims description 33
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
Abstract
The present invention provides a kind of dust-extraction unit administered suitable for Mine Dust,Including spring,Magnet one,Magnet two,Square plate,Drawstring,Elastic threads and scraper plate,The spring right end is fixed on the upside of ash screen left side,And spring left end is installed on the upside of motion bar right side,The magnet one is installed on the upside of motion bar left side,The magnet two is installed on transmission shaft lower end by connecting rod,The design achieves the purpose of automatic block clearing,The square plate is assemblied in square orifice,The scraper plate is assemblied in ash collecting box,The elastic threads front end is installed on scraper plate rear end face,And elastic threads rear end is installed on ash collecting box Internal back end face,The drawstring front end is fixed on square plate rear end face,And drawstring rear end is installed on screed front end face,The design achieves the convenient purpose for scraping dust,The convenient management of the present invention,Dust removing effects are good,Stability is good,Reliability is high.
Description
Technical field
The present invention is a kind of dust-extraction unit administered suitable for Mine Dust, belongs to mining equipment field.
Background technology
The substantial amounts of coal dust that can be produced in colliery digging production process, full of whole operation field, particularly fully-mechanized digging machine
During construction, the Dust Capacity of its output is maximum, and substantial amounts of coal dust can make the reduction of Work places visibility, influence job safety, and sternly
The health of ghost image worker；State Ministry of Environmental Protection and Coal Mine Safety Supervision Bureau pay much attention to dust harzard, to Work places
Dust emission concentration has worked out relevant criterion, strictly controls dust concentration, to reduce dust harzard.
In the prior art, the dust-extraction unit that Mine Dust is administered still remains many shortcomings, its ash screen is frequent
It is blocked, it is necessary to frequently clear up, and need personnel on site to keep an eye on, while the dust-extraction unit cleaning that existing Mine Dust is administered is grey
Cleaned during dirt, it is necessary to open equipment, it is complex for operation step, so being badly in need of a kind of dust-extraction unit administered suitable for Mine Dust
To solve above-mentioned produced problem.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the present invention to provide a kind of dedusting dress administered suitable for Mine Dust
Put, to solve the problems mentioned in the above background technology, the convenient management of the present invention, dust removing effects are good, and stability is good, reliability
It is high.
To achieve these goals, the present invention is to realize by the following technical solutions：One kind is controlled suitable for Mine Dust
The dust-extraction unit of reason, including apparatus main body, striking mechanism and scraping machine structure, described device main body include dust cleaning case, wind turbine, peace
Loading board, wide-mouth cover and blast pipe, the installing plate are assemblied in dust cleaning case right side, and the wind turbine is assemblied in installing plate upper end
Face, and wind turbine is connected by air hose with dust cleaning case, the wide-mouth cover is installed on dust cleaning case left side by blast pipe, described to strike
Hitting mechanism includes ash screen, fixed link, spring, magnet one, magnet two, motor, transmission shaft, motion bar and ball, the filter
Grey net is assemblied in dust cleaning case, and the fixed link is installed on the upside of ash screen left side, and fixed link left end is equipped with motion bar,
The spring right end is fixed on the upside of ash screen left side, and spring left end is installed on the upside of motion bar right side, the magnet
One is installed on the upside of motion bar left side, and the motion bar lower end is equipped with ball, and the ball is arranged on the left of ash screen, institute
State motor and be installed on dust cleaning case upper surface, the drive shaft cartridge is fitted in dust cleaning case, and transmission shaft upper end is passed through inside dust cleaning case
Upper surface, and motor is connected, the magnet two is installed on transmission shaft lower end by connecting rod, and the scraping machine structure includes square
Mouth, square plate, drawstring, ash collecting box, elastic threads and scraper plate, the ash collecting box is assemblied in dust cleaning case interior lower end face, and collects ash
Box is arranged on the left of ash screen, and the square orifice is opened in dust cleaning case front end face, and the square plate is assemblied in square orifice, described
Scraper plate is assemblied in ash collecting box, and the elastic threads front end is installed on scraper plate rear end face, and elastic threads rear end is installed in ash collecting box
Portion's rear end face, the drawstring front end is fixed on square plate rear end face, and drawstring rear end is installed on screed front end face.
Further, the ash collecting box front end face offers port, and port coincides with square orifice.
Further, the motion bar is connected by shaft with fixed link.
Further, the square plate front end face is equipped with draw ring.
Further, left side and right side symmetrically offer two groups of sliding slots, the scraper plate left end inside the ash collecting box
Face and right side are symmetrically equipped with two groups of sliding blocks, and sliding block is assemblied in sliding slot.
Further, the upper end of slide block face and lower face are each equipped with ball.
Beneficial effects of the present invention：A kind of dust-extraction unit administered suitable for Mine Dust of the present invention, because the present invention adds
Ash screen, fixed link, spring, magnet one, magnet two, motor, transmission shaft, motion bar and ball, the design solve original
There is ash screen in the dust-extraction unit of Mine Dust improvement to be often blocked, it is necessary to frequently clear up, and need what personnel on site kept an eye on
Problem, realizes the purpose of automatic block clearing, reduces the input of human resources, reduces the management difficulty of the present invention.
Because the present invention with the addition of square orifice, square plate, drawstring, ash collecting box, elastic threads and scraper plate, which solves original
Cleaned when having the dust-extraction unit cleaning dust that Mine Dust administers, it is necessary to open equipment, it is complex for operation step the problem of, it is real
The convenient purpose for scraping dust is showed, has avoided the occurrence of and open the clean situation of equipment progress, reduce the clean purpose of dust, carry
The high clean work efficiency of dust.
Because the present invention with the addition of port, cleaning of the design easy to dust and the installation easy to drawstring, separately with the addition of and turn
Axis, the design are easy to the rotation of motion bar, separately with the addition of draw ring, which separately with the addition of sliding slot and cunning easy to extraction square plate
Block, the design are easy to position of the limiting scraper in ash collecting box, separately with the addition of sliding block, this design reduces the resistance of slide block movement
Power, the convenient management of the present invention, dust removing effects are good, and stability is good, and reliability is high.
Brief description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is a kind of structure diagram for the dust-extraction unit administered suitable for Mine Dust of the present invention；
Fig. 2 is the structure diagram of striking mechanism in a kind of dust-extraction unit administered suitable for Mine Dust of the present invention；
Fig. 3 is the structure diagram of scraping machine structure in a kind of dust-extraction unit administered suitable for Mine Dust of the present invention；
In figure：1- striking mechanisms, 2- dust cleaning cases, 3- wind turbines, 4- installing plates, 5- scraping machines structure, 6- wide-mouths cover, 7- blast pipes, 11-
Ash screen, 12- fixed links, 13- springs, 14- magnet one, 15- magnet two, 16- motors, 17- transmission shafts, 18- motion bars, 19-
Ball, 51- square orifices, 52- square plates, 53- drawstrings, 54- ash collecting box, 55- elastic threads, 56- scraper plates.
Embodiment
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention easy to understand, with reference to
Embodiment, the present invention is further explained.
- Fig. 3 is please referred to Fig.1, the present invention provides a kind of technical solution：A kind of dust-extraction unit administered suitable for Mine Dust,
Including apparatus main body, striking mechanism 1 and scraping machine structure 5, apparatus main body includes dust cleaning case 2, wind turbine 3, installing plate 4, wide-mouth cover 6
And blast pipe 7, installing plate 4 are assemblied in 2 right side of dust cleaning case, wind turbine 3 is assemblied in 4 upper surface of installing plate, and wind turbine 3 passes through wind
Pipe is connected with dust cleaning case 2, and wide-mouth cover 6 is installed on 2 left side of dust cleaning case by blast pipe 7.
Striking mechanism 1 includes ash screen 11, fixed link 12, spring 13, magnet 1, magnet 2 15, motor 16, transmission shaft
17th, motion bar 18 and ball 19, ash screen 11 are assemblied in dust cleaning case 2, and fixed link 12 is installed on 11 left side of ash screen
Side, and 12 left end of fixed link is equipped with motion bar 18,13 right end of spring is fixed on the upside of 11 left side of ash screen, and spring 13 is left
End is installed on the upside of 18 right side of motion bar, and magnet 1 is installed on the upside of 18 left side of motion bar, the assembling of 18 lower end of motion bar
There is ball 19, ball 19 is arranged on the left side of ash screen 11, and motor 16 is installed on 2 upper surface of dust cleaning case, and transmission shaft 17, which is assemblied in, to be removed
In dirt case 2, and 17 upper end of transmission shaft passes through 2 inner upper end face of dust cleaning case, and connects motor 16, and magnet 2 15 is pacified by connecting rod
Mounted in 17 lower end of transmission shaft, which solves in the dust-extraction unit that original Mine Dust is administered that ash screen 11 is often blocked,
The problem of needing frequently to clear up, and needing personnel on site to keep an eye on.
Scraping machine structure 5 includes square orifice 51, square plate 52, drawstring 53, ash collecting box 54, elastic threads 55 and scraper plate 56, collection
Ash box 54 is assemblied in 2 interior lower end face of dust cleaning case, and ash collecting box 54 is arranged on the left side of ash screen 11, and square orifice 51 is opened in dedusting
2 front end face of case, square plate 52 are assemblied in square orifice 51, and scraper plate 56 is assemblied in ash collecting box 54, and 55 front end of elastic threads is installed on
56 rear end face of scraper plate, and 55 rear end of elastic threads is installed on 54 Internal back end face of ash collecting box, 53 front end of drawstring is fixed on square plate 52
Rear end face, and 53 rear end of drawstring is installed on 56 front end face of scraper plate, which solves the dust-extraction unit that original Mine Dust is administered
Clean dust when cleaned, it is necessary to open equipment, it is complex for operation step the problem of.
54 front end face of ash collecting box offers port, and port coincides with square orifice 51, and motion bar 18 is by shaft and admittedly
Fixed pole 12 is connected, and 52 front end face of square plate is equipped with draw ring, and 54 inside left side of ash collecting box and right side symmetrically offer two
Group sliding slot, 56 left side of scraper plate and right side are symmetrically equipped with two groups of sliding blocks, and sliding block is assemblied in sliding slot, upper end of slide block face and
Lower face is each equipped with ball.
Embodiment：In progress in use, staff first checks the present invention, check for scarce
Fall into, can not just carry out using if there is defect, need to notify maintenance personal to carry out maintenance at this time, if there is no asking
It can be carried out using if topic, staff runs motor 16, and the work of motor 16 drives transmission shaft 17 to rotate, and transmission shaft 17 is logical
Connecting rod band moving magnet 2 15 is crossed to rotate, when magnet 2 15 becomes small in rotary course with a distance from magnet 1, magnet two
15 force magnet 1 to move right by repulsive force, and then magnet 1 forces motion bar 18 to surround fixed link 12 by shaft
Rotate, motion bar 18 extrudes spring 13 in rotation process, forces spring 13 that elastic deformation occurs, when magnet 2 15 and magnet one
When 14 distance becomes larger, under the action of 13 screen resilience of spring, spring 13 forces motion bar 18 to rotate backward, and then motion bar 18
Lower end drives ball 19 to hit ash screen 11, and ash screen 11, which is impacted, to be shaken, so as to will be attached to the ash on ash screen 11
Dirt shakes, and realizes the purpose for tapping block clearing, solves ash screen 11 in the dust-extraction unit that original Mine Dust is administered and is often blocked
Plug is, it is necessary to frequently clear up, and the problem of need personnel on site to keep an eye on.
Dust on ash screen 11 is fallen into ash collecting box 54 during percussion, when staff needs to clear up ash collecting box
During dust in 54, staff takes out square plate 52 out of square orifice 51, then pulls drawstring 53, and then drawstring 53 drives
The movement in ash collecting box 54 of scraper plate 56, while 56 tensile elasticity rope 55 of scraper plate, force elastic threads 55 to extend, scraper plate 56 is being moved through
The dust in ash collecting box 54 is scraped to square orifice 51 in journey, the purpose for scraping dust is realized with this, when staff comes loose drawing
Restrict 53 when, under the action of 55 screen resilience of elastic threads, scraper plate 56 sets back, and solves the dedusting dress that original Mine Dust is administered
Put cleaning dust when cleaned, it is necessary to open equipment, it is complex for operation step the problem of.
The basic principles, main features and the advantages of the invention have been shown and described above, for this area skill
For art personnel, it is clear that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing substantially from the present invention spirit or
In the case of essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes fallen in the implication and scope of the equivalency of claim in the present invention
It is interior.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of dust-extraction unit administered suitable for Mine Dust, including apparatus main body, striking mechanism（1）And scraping machine structure（5）,
It is characterized in that：Described device main body includes dust cleaning case（2）, wind turbine（3）, installing plate（4）, wide-mouth cover（6）And blast pipe
（7）, the installing plate（4）It is assemblied in dust cleaning case（2）Right side, the wind turbine（3）It is assemblied in installing plate（4）Upper surface, and wind
Machine（3）Pass through air hose and dust cleaning case（2）It is connected, the wide-mouth cover（6）Pass through blast pipe（7）Installed in dust cleaning case（2）Left end
Face；
The striking mechanism（1）Including ash screen（11）, fixed link（12）, spring（13）, magnet one（14）, magnet two（15）、
Motor（16）, transmission shaft（17）, motion bar（18）And ball（19）, the ash screen（11）It is assemblied in dust cleaning case（2）It is interior, institute
State fixed link（12）Installed in ash screen（11）On the upside of left side, and fixed link（12）Left end is equipped with motion bar（18）, it is described
Spring（13）Right end is fixed on ash screen（11）On the upside of left side, and spring（13）Left end is installed on motion bar（18）On right side
Side, the magnet one（14）Installed in motion bar（18）On the upside of left side, the motion bar（18）Lower end is equipped with ball（19）,
The ball（19）It is arranged on ash screen（11）Left side, the motor（16）Installed in dust cleaning case（2）Upper surface, the transmission shaft
（17）It is assemblied in dust cleaning case（2）It is interior, and transmission shaft（17）Upper end passes through dust cleaning case（2）Inner upper end face, and connect motor（16）,
The magnet two（15）Transmission shaft is installed on by connecting rod（17）Lower end；
The scraping machine structure（5）Including square orifice（51）, square plate（52）, drawstring（53）, ash collecting box（54）, elastic threads（55）With
And scraper plate（56）, the ash collecting box（54）It is assemblied in dust cleaning case（2）Interior lower end face, and ash collecting box（54）It is arranged on ash screen
（11）Left side, the square orifice（51）It is opened in dust cleaning case（2）Front end face, the square plate（52）It is assemblied in square orifice（51）
It is interior, the scraper plate（56）It is assemblied in ash collecting box（54）It is interior, the elastic threads（55）Front end is installed on scraper plate（56）Rear end face, and bullet
Property rope（55）Rear end is installed on ash collecting box（54）Internal back end face, the drawstring（53）Front end is fixed on square plate（52）Rear end
Face, and drawstring（53）Rear end is installed on scraper plate（56）Front end face.
A kind of 2. dust-extraction unit administered suitable for Mine Dust according to claim 1, it is characterised in that：The ash collecting box
（54）Front end face offers port, and port and square orifice（51）Coincide.
A kind of 3. dust-extraction unit administered suitable for Mine Dust according to claim 1, it is characterised in that：The motion bar
（18）Pass through shaft and fixed link（12）It is connected.
A kind of 4. dust-extraction unit administered suitable for Mine Dust according to claim 1, it is characterised in that：The square plate
（52）Front end face is equipped with draw ring.
A kind of 5. dust-extraction unit administered suitable for Mine Dust according to claim 1, it is characterised in that：The ash collecting box
（54）Internal left side and right side symmetrically offer two groups of sliding slots, the scraper plate（56）Left side and right side are symmetrically equipped with
Two groups of sliding blocks, and sliding block is assemblied in sliding slot.
A kind of 6. dust-extraction unit administered suitable for Mine Dust according to claim 5, it is characterised in that：On the sliding block
End face and lower face are each equipped with ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069925.XA CN108035766A (en) | 2018-01-24 | 2018-01-24 | A kind of dust-extraction unit administered suitable for Mine Dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069925.XA CN108035766A (en) | 2018-01-24 | 2018-01-24 | A kind of dust-extraction unit administered suitable for Mine Dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108035766A true CN108035766A (en) | 2018-05-15 |
Family
ID=62096697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810069925.XA Withdrawn CN108035766A (en) | 2018-01-24 | 2018-01-24 | A kind of dust-extraction unit administered suitable for Mine Dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035766A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619808A (en) * | 2018-05-24 | 2018-10-09 | 贵州环科环境工程有限公司 | Fume recovery system |
| CN109041471A (en) * | 2018-07-10 | 2018-12-18 | 淮北智淮科技有限公司 | A kind of integrated power control cabinet of industrial robot |
| CN111760392A (en) * | 2020-07-22 | 2020-10-13 | 卢兰 | Flat dust collector for textile workshop |
| CN111997679A (en) * | 2020-09-09 | 2020-11-27 | 重庆工程职业技术学院 | Fully-mechanized coal mining face end pushing state monitoring device |
| CN112316681A (en) * | 2020-10-16 | 2021-02-05 | 杭州国泰环保科技股份有限公司 | In-furnace desulfurization system and operation method thereof |
| CN112727530A (en) * | 2020-12-18 | 2021-04-30 | 重庆工程职业技术学院 | Auxiliary device for coal mine operation |
| CN112827261A (en) * | 2021-01-06 | 2021-05-25 | 杨斌 | Air purification system is used in underground construction |
| CN113368946A (en) * | 2021-05-26 | 2021-09-10 | 江苏俊达环保科技有限公司 | Device and method for manufacturing recycled plastic particles |
-
2018
- 2018-01-24 CN CN201810069925.XA patent/CN108035766A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619808A (en) * | 2018-05-24 | 2018-10-09 | 贵州环科环境工程有限公司 | Fume recovery system |
| CN109041471A (en) * | 2018-07-10 | 2018-12-18 | 淮北智淮科技有限公司 | A kind of integrated power control cabinet of industrial robot |
| CN111760392A (en) * | 2020-07-22 | 2020-10-13 | 卢兰 | Flat dust collector for textile workshop |
| CN111760392B (en) * | 2020-07-22 | 2022-07-29 | 青岛银通机械有限公司 | Flat dust collector for textile workshop |
| CN111997679A (en) * | 2020-09-09 | 2020-11-27 | 重庆工程职业技术学院 | Fully-mechanized coal mining face end pushing state monitoring device |
| CN112316681A (en) * | 2020-10-16 | 2021-02-05 | 杭州国泰环保科技股份有限公司 | In-furnace desulfurization system and operation method thereof |
| CN112727530A (en) * | 2020-12-18 | 2021-04-30 | 重庆工程职业技术学院 | Auxiliary device for coal mine operation |
| CN112727530B (en) * | 2020-12-18 | 2022-08-19 | 重庆工程职业技术学院 | Auxiliary device for coal mine operation |
| CN112827261A (en) * | 2021-01-06 | 2021-05-25 | 杨斌 | Air purification system is used in underground construction |
| CN113368946A (en) * | 2021-05-26 | 2021-09-10 | 江苏俊达环保科技有限公司 | Device and method for manufacturing recycled plastic particles |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180515 |