CN108180031A - A kind of dust suction depositing dust integrated device for mine - Google Patents
A kind of dust suction depositing dust integrated device for mine Download PDFInfo
- Publication number
- CN108180031A CN108180031A CN201711449048.0A CN201711449048A CN108180031A CN 108180031 A CN108180031 A CN 108180031A CN 201711449048 A CN201711449048 A CN 201711449048A CN 108180031 A CN108180031 A CN 108180031A
- Authority
- CN
- China
- Prior art keywords
- dust
- stent
- mine
- depositing dust
- integrated device
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a kind of dust suction depositing dust integrated device for mine, including bottom plate, water tank, dust fall chamber, piston cylinder and dust hood；The bottom plate upper end is provided with stent, motor is provided on the inside of stent, screw shell is provided on the right side of motor, screw shell is fixedly connected with stent, the inside thread of screw shell is connected with threaded rod, and threaded rod is fixedly connected through the upper end of stent and with the lower end of dust hood；The upper end of the piston cylinder is connected by conduit with depositing dust case, and depositing dust case is fixedly mounted on the inside of stent, and the rotating bar is stretched into depositing dust case, and stirring rod is symmetrically installed in rotating bar.It is of the invention novel in design, the threaded rod of setting drives dust hood to move up and down while driving dust hood rotation, so as to increase the dust suction range of dust hood, improve dust-laying effect, gas after absorption dust is discharged by jet arc, jet arc drives the rotation of L-type jet pipe, so as to save energy and can increase atomizing spray range, improve dust-laying effect.
Description
Technical field
The present invention relates to field of mining, specifically a kind of dust suction depositing dust integrated device for mine.
Background technology
A large amount of dust, miner's operation on the one hand meeting in the environment of the dust that gathers can be generated in underground coal mine production process
Safety accident is induced due to eyesight substantially reduces, on the other hand can also aggravate the risk that miner violates pneumoconiosis.For a long time, mine
Underground is mainly achieved the purpose that dust-proof using atomizing de-dusting.Atomizing de-dusting apparatus mainly selects circular arc according to drift section structure
Shape spraying device and linear type spraying device, such device is mainly fixed at the top of tunnel, and since fixed point is more, therefore it is installed
Movement is time-consuming and laborious, affects dustfall efficiency；The required working at height in installation process simultaneously, also brings larger peace to operation
Full hidden danger.In addition atomizer is each provided at the top of tunnel so that nozzle range is difficult to reach requirement, causes spraying that can not cover
It covers entire drift section and can not achieve efficient depositing dust.
Invention content
The purpose of the present invention is to provide a kind of dust suction depositing dust integrated device for mine, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides following technical solution：
A kind of dust suction depositing dust integrated device for mine, including bottom plate, water tank, dust fall chamber, piston cylinder and dust hood；The bottom
Plate upper end is provided with stent, and motor is provided on the inside of stent, screw shell, screw shell and stent are provided on the right side of motor
Be fixedly connected, the inside thread of screw shell is connected with threaded rod, threaded rod through the upper end of stent and under dust hood
End is fixedly connected, and the second threaded rod outer sheath on the inside of stent is equipped with sleeve, and bevel gear is symmetrically installed on the outside of sleeve
The inside left-end of A, two bevel gear A are provided with incomplete bevel gear；The output shaft of the motor is turned by belt and rotating bar
Dynamic connection, the right end of rotating bar are fixedly connected with incomplete bevel gear；Piston cylinder is additionally provided on the inside of the stent；The piston
It is connected on the left of the lower end of cylinder with one end of conduit, the other end of conduit is connected with the bellows being arranged on the inside of screw shell, wave
Line pipe upper end is connected by rotary joint with threaded rod, and the rotary joint is slidably connected at the inside of screw shell, described
The upper end of piston cylinder is connected by conduit with depositing dust case, and depositing dust case is fixedly mounted on the inside of stent, and the rotating bar stretches into depositing dust
In case, and stirring rod is symmetrically installed in rotating bar.
As further embodiment of the present invention：The bottom plate lower end is symmetrically installed with wheel.
As further scheme of the invention：Cross protruding block, the outside of threaded rod are provided on the inside of the sleeve
It is provided with cross recess.
As further scheme of the invention：The interior Slideslip of the piston cylinder is provided with piston, the right end of piston with
Push rod is fixedly connected, and the right end of push rod runs through the right wall of piston cylinder and is hinged with one end of connecting rod, and the other end of connecting rod turns
It is dynamic to be connected at the eccentric position of turntable.
As further scheme of the invention：The rear end shaft of the turntable and bevel gear B, bevel gear B and bevel gear C
Engagement, bevel gear C are fixedly mounted on the output shaft of motor.
As further scheme of the invention：The threaded rod is hollow structure, and upper end and the dust hood of threaded rod connect
It is logical.
As further scheme of the invention：The pedestal upper end is rotatably connected to L-type jet pipe, L by rotary joint
Atomizer is provided on type jet pipe, jet arc is communicated on the outside of the upright end of L-type jet pipe.
As further scheme of the invention：The jet arc is provided with multiple and circumferentially sets, rotary joint
Lower end is connected with depositing dust case.
As further scheme of the invention：The upper end of the water tank is provided with suction pump, and the left end of suction pump passes through
Catheter is connected with water tank, and suction pump is connected by catheter and rotary joint with atomizer.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, dust hood is driven to move up and down while the threaded rod of setting drives dust hood rotation, so as to increase the dust suction of dust hood
Range improves dust-laying effect；
2nd, the gas after dust is adsorbed to discharge by jet arc, jet arc drives the rotation of L-type jet pipe, so as to save energy and
Atomizing spray range can be increased, improve dust-laying effect.
Description of the drawings
Fig. 1 is the structure diagram of the dust suction depositing dust integrated device for mine.
Fig. 2 is the vertical view for jet arc in the dust suction depositing dust integrated device of mine.
Fig. 3 is the vertical view of the dust suction depositing dust integrated device turntable for mine.
Fig. 4 is the sectional view for screw shell in the dust suction depositing dust integrated device of mine.
In figure：1- bottom plates, 2- water tanks, 3- suction pumps, 4- stents, 5- jet arcs, 6-L types jet pipe, 7- depositing dusts case, 8- are stirred
Mix stick, 9- wheels, 10- rotating bars, 11- piston cylinders, 12- pistons, 13- push rods, 14- connecting rods, 15- turntables, 16- motors, 17-
Screw shell, 18- threaded rods, 19- bevel gear A, 20- sleeve, the incomplete bevel gears of 21-, 22- dust hoods, 23- bevel gears B,
24- bevel gear C, 25- conduits.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
~ 4 are please referred to Fig.1, a kind of dust suction depositing dust integrated device for mine including bottom plate 1, water tank 2, dust fall chamber 7, is lived
Plug cylinder 11 and dust hood 22；1 lower end of bottom plate is symmetrically installed with wheel 9, and the setting of wheel 9 is that the device is facilitated to move, bottom
1 upper end of plate is provided with stent 4, and the inside of stent 4 is provided with motor 16, and the right side of motor 16 is provided with screw shell 17, screw thread
Sleeve 17 is fixedly connected with stent 4, and the inside thread of screw shell 17 is connected with threaded rod 18, and threaded rod 18 runs through stent 4
Upper end and be fixedly connected with the lower end of dust hood 22,21 outer sheath of the second threaded rod positioned at the inside of stent 4 is equipped with sleeve 20,
The inside of the sleeve 20 is provided with cross protruding block, and the outside of threaded rod 18 is provided with cross recess, cross protruding block and cross
Slot, which is slided when setting rotates so as to fulfill sleeve 20, drives threaded rod 18 to rotate, while do not influence threaded rod 18 and move up and down, and covers
The inside left-end that the outside of cylinder 20 is symmetrically installed with bevel gear A19, two bevel gear A19 is provided with incomplete bevel gear 21, no
When complete bevel gear 21 rotates, band moving sleeve 20 rotates when position with teeth is engaged with the bevel gear A19 of upper end, when incomplete cone
Gear 21 is rotated further, bevel gear A19 of the position with teeth far from upper end and band moving sleeve when being engaged with the bevel gear A19 of lower end
20 occur counter motion, and driving threaded rod 18 so as to fulfill sleeve 20, threaded rod 18 drives dust hood toward renaturation rotating campaign
Dust hood 22 is driven to move up and down while 22 rotation, so as to increase the dust suction range of dust hood 22, improve dust-laying effect；It is described
The output shaft of motor 16 is rotatablely connected by belt and rotating bar 10, and the right end of rotating bar 10 is fixed with incomplete bevel gear 21 to be connected
It connects, rotating bar 10 is driven to rotate by belt when motor 16 rotates, rotating bar 10 drives incomplete 21 turns of bevel gear.
4 inside of stent is additionally provided with piston cylinder 11, and the interior Slideslip of piston cylinder 11 is provided with piston 12, piston 12
Right end is fixedly connected with push rod 13, and the right end of push rod 13 runs through the right wall of piston cylinder 11 and is hinged with one end of connecting rod 14, even
The other end of extension bar 14 is rotatably connected at the eccentric position of turntable 15, and push rod 13 is driven by connecting rod 14 when turntable 15 rotates
Piston 12 is pushed to move left and right, so as to fulfill the process of pumping of piston cylinder 11, the rear end shaft of the turntable 15 and bevel gear
B23, bevel gear B23 are engaged with bevel gear C24, and bevel gear C24 is fixedly mounted on the output shaft of motor 16, and motor 16 passes through cone
Gear B 23 and the engagement of bevel gear C24 drive turntable 15 to rotate；The lower end left side and the one of conduit 25 of the piston cylinder 11
End connection, the other end of conduit 25 are connected with being arranged on the bellows of 17 inside of screw shell, and bellows upper end is connect by rotation
Head is connected with threaded rod 18, and the rotary joint is slidably connected at the inside of screw shell 17, and the threaded rod 18 is hollow
Structure, the upper end of threaded rod 18 are connected with dust hood 22, and the upper end of the piston cylinder 11 is connected by conduit with depositing dust case 7, drop
Dirt case 7 is fixedly mounted on 4 inside of stent, and the rotating bar 10 is stretched into depositing dust case 7, and stirring is symmetrically installed in rotating bar 10
Stick 8,7 inside of depositing dust case hold clear water for the dust particles in adsorbed gas, and rotating bar 10 drives stirring rod 8 to rotate, so as to
Increase the adsorption effect of water.
4 upper end of stent is rotatably connected to L-type jet pipe 6 by rotary joint, and atomizer is provided on L-type jet pipe 6,
On the outside of the upright end of L-type jet pipe 6, jet arc 5 is communicated with, the jet arc 5 is provided with multiple and circumferentially sets, rotation
Connector lower end is connected with depositing dust case 7, and the gas in depositing dust case 7 after depositing dust is sprayed by jet arc 5, passes through jet arc 5
Effect drives L-type jet pipe 6 to rotate；The upper end of the water tank 2 is provided with suction pump 3, and the left end of suction pump 3 passes through catheter and water
Case 2 connects, and suction pump 3 is connected by catheter and rotary joint with atomizer.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (9)
1. a kind of dust suction depositing dust integrated device for mine, including bottom plate（1）, water tank（2）, dust fall chamber（7）, piston cylinder（11）
And dust hood（22）；It is characterized in that, the bottom plate（1）Upper end is provided with stent（4）, stent（4）Inside be provided with motor
（16）, motor（16）Right side be provided with screw shell（17）, screw shell（17）With stent（4）It is fixedly connected, screw shell
（17）Inside thread be connected with threaded rod（18）, threaded rod（18）Run through stent（4）Upper end and and dust hood（22）'s
Lower end is fixedly connected, positioned at stent（4）Second threaded rod of inside（21）Outer sheath is equipped with sleeve（20）, sleeve（20）Outside
It is symmetrically installed with bevel gear A（19）, two bevel gear A（19）Inside left-end be provided with incomplete bevel gear（21）；The electricity
Machine（16）Output shaft pass through belt and rotating bar（10）Rotation connection, rotating bar（10）Right end and incomplete bevel gear（21）
It is fixedly connected；The stent（4）Inside is additionally provided with piston cylinder（11）；The piston cylinder（11）Lower end on the left of and conduit（25）
One end connection, conduit（25）The other end and be arranged on screw shell（17）The bellows connection of inside, bellows upper end leads to
Cross rotary joint and threaded rod（18）Connection, the rotary joint are slidably connected at screw shell（17）Inside, the work
Plug cylinder（11）Upper end pass through conduit and depositing dust case（7）Connection, depositing dust case（7）It is fixedly mounted on stent（4）Inside, the rotation
Bar（10）Stretch into depositing dust case（7）It is interior, and rotating bar（10）On be symmetrically installed with stirring rod（8）.
2. the dust suction depositing dust integrated device according to claim 1 for mine, which is characterized in that the bottom plate（1）Under
End is symmetrically installed with wheel（9）.
3. the dust suction depositing dust integrated device according to claim 1 for mine, which is characterized in that the sleeve（20）'s
Inside is provided with cross protruding block, threaded rod（18）Outside be provided with cross recess.
4. the dust suction depositing dust integrated device according to claim 1 for mine, which is characterized in that the piston cylinder（11）
Interior Slideslip be provided with piston（12）, piston（12）Right end and push rod（13）It is fixedly connected, push rod（13）Right end run through
Piston cylinder（11）Right wall and and connecting rod（14）One end be hinged, connecting rod（14）The other end be rotatably connected on turntable（15）
Eccentric position at.
5. the dust suction depositing dust integrated device according to claim 4 for mine, which is characterized in that the turntable（15）'s
Rear end shaft and bevel gear B（23）, bevel gear B（23）With bevel gear C（24）Engagement, bevel gear C（24）It is fixedly mounted on motor
（16）Output shaft on.
6. the dust suction depositing dust integrated device according to claim 1 for mine, which is characterized in that the threaded rod（18）
For hollow structure, threaded rod（18）Upper end and dust hood（22）Connection.
7. the dust suction depositing dust integrated device according to claim 1 for mine, which is characterized in that the stent（4）On
End is rotatably connected to L-type jet pipe by rotary joint（6）, L-type jet pipe（6）On be provided with atomizer, L-type jet pipe（6）It is perpendicular
Vertical end outside is communicated with jet arc（5）.
8. the dust suction depositing dust integrated device according to claim 7 for mine, which is characterized in that the jet arc
（5）It is provided with multiple and circumferentially sets, rotary joint lower end and depositing dust case（7）Connection.
9. the dust suction depositing dust integrated device according to claim 1 for mine, which is characterized in that the water tank（2）'s
Upper end is provided with suction pump（3）, suction pump（3）Left end pass through catheter and water tank（2）Connection, suction pump（3）Pass through drain
Pipe and rotary joint are connected with atomizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711449048.0A CN108180031A (en) | 2017-12-27 | 2017-12-27 | A kind of dust suction depositing dust integrated device for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711449048.0A CN108180031A (en) | 2017-12-27 | 2017-12-27 | A kind of dust suction depositing dust integrated device for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108180031A true CN108180031A (en) | 2018-06-19 |
Family
ID=62547817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711449048.0A Pending CN108180031A (en) | 2017-12-27 | 2017-12-27 | A kind of dust suction depositing dust integrated device for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180031A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979706A (en) * | 2018-07-02 | 2018-12-11 | 王世华 | A kind of mine adsorption air device for reducing dust |
| CN109025994A (en) * | 2018-06-27 | 2018-12-18 | 湖州吉斯安机械有限公司 | A kind of coalcutter of strong applicability |
| CN109209471A (en) * | 2018-11-12 | 2019-01-15 | 中交第二公路工程局有限公司 | Device for reducing dust is used in a kind of construction of method of tunnel drilling and blasting |
| CN109296394A (en) * | 2018-11-07 | 2019-02-01 | 盐城市吉平人造革有限公司 | A kind of dust prevention sprinkler based on height adjustment |
| CN109603362A (en) * | 2019-02-22 | 2019-04-12 | 湖南科技学院 | A kind of air based on water absorption principle removes haze device |
| CN109736242A (en) * | 2019-01-14 | 2019-05-10 | 张华明 | A kind of construction Intelligent temperature reduction device |
| CN110158524A (en) * | 2019-05-31 | 2019-08-23 | 赵惠平 | A kind of municipal administration environmental sanitation streets watering sprinkling truck |
| CN110181696A (en) * | 2019-06-10 | 2019-08-30 | 滕以飞 | A kind of ceramic tile U.S. seam uses grooving machine |
| CN110370394A (en) * | 2019-08-12 | 2019-10-25 | 陈秋霞 | A kind of timber cutting device for processing |
| CN110925011A (en) * | 2019-12-05 | 2020-03-27 | 江苏圣耐普特矿山设备制造有限公司 | Mine dust collecting equipment |
| CN111980744A (en) * | 2020-08-31 | 2020-11-24 | 刘晓燕 | Coal mining that can scope of adjusting by oneself adopts dust collector |
| CN112450192A (en) * | 2020-12-09 | 2021-03-09 | 吕宗霖 | Afforestation spouts medicine device with high efficiency |
| CN112641370A (en) * | 2020-01-15 | 2021-04-13 | 深圳和华国际工程与设计有限公司 | Building construction supervision device based on BIM technology |
| CN112690590A (en) * | 2020-12-29 | 2021-04-23 | 舒良秀 | Ventilation and dehumidification goods shelf for goods storage |
| CN112878249A (en) * | 2021-01-08 | 2021-06-01 | 刘目娥 | A environment-friendly device that road surface dust that is used for road maintenance got rid of |
| CN113137266A (en) * | 2021-05-25 | 2021-07-20 | 平顶山天安煤业股份有限公司 | Circulating dustproof curtain of dustproof spraying water conservancy |
| CN113399245A (en) * | 2021-05-10 | 2021-09-17 | 桑野 | Material screening plant for construction |
| CN113605958A (en) * | 2021-09-16 | 2021-11-05 | 云南滇东雨汪能源有限公司 | Dust collector is used in colliery site operation |
| CN113818918A (en) * | 2020-09-25 | 2021-12-21 | 溆浦县东新矿业有限公司 | Dust fall and dust collector for mining industry |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025994A (en) * | 2018-06-27 | 2018-12-18 | 湖州吉斯安机械有限公司 | A kind of coalcutter of strong applicability |
| CN108979706A (en) * | 2018-07-02 | 2018-12-11 | 王世华 | A kind of mine adsorption air device for reducing dust |
| CN109296394A (en) * | 2018-11-07 | 2019-02-01 | 盐城市吉平人造革有限公司 | A kind of dust prevention sprinkler based on height adjustment |
| CN109209471A (en) * | 2018-11-12 | 2019-01-15 | 中交第二公路工程局有限公司 | Device for reducing dust is used in a kind of construction of method of tunnel drilling and blasting |
| CN109736242A (en) * | 2019-01-14 | 2019-05-10 | 张华明 | A kind of construction Intelligent temperature reduction device |
| CN109603362A (en) * | 2019-02-22 | 2019-04-12 | 湖南科技学院 | A kind of air based on water absorption principle removes haze device |
| CN110158524A (en) * | 2019-05-31 | 2019-08-23 | 赵惠平 | A kind of municipal administration environmental sanitation streets watering sprinkling truck |
| CN110181696A (en) * | 2019-06-10 | 2019-08-30 | 滕以飞 | A kind of ceramic tile U.S. seam uses grooving machine |
| CN110370394A (en) * | 2019-08-12 | 2019-10-25 | 陈秋霞 | A kind of timber cutting device for processing |
| CN110370394B (en) * | 2019-08-12 | 2021-05-14 | 浙江良友木业有限公司 | Cutting device for wood working |
| CN110925011A (en) * | 2019-12-05 | 2020-03-27 | 江苏圣耐普特矿山设备制造有限公司 | Mine dust collecting equipment |
| CN112641370A (en) * | 2020-01-15 | 2021-04-13 | 深圳和华国际工程与设计有限公司 | Building construction supervision device based on BIM technology |
| CN111980744A (en) * | 2020-08-31 | 2020-11-24 | 刘晓燕 | Coal mining that can scope of adjusting by oneself adopts dust collector |
| CN113818918A (en) * | 2020-09-25 | 2021-12-21 | 溆浦县东新矿业有限公司 | Dust fall and dust collector for mining industry |
| CN112450192A (en) * | 2020-12-09 | 2021-03-09 | 吕宗霖 | Afforestation spouts medicine device with high efficiency |
| CN112690590A (en) * | 2020-12-29 | 2021-04-23 | 舒良秀 | Ventilation and dehumidification goods shelf for goods storage |
| CN112878249A (en) * | 2021-01-08 | 2021-06-01 | 刘目娥 | A environment-friendly device that road surface dust that is used for road maintenance got rid of |
| CN112878249B (en) * | 2021-01-08 | 2022-11-15 | 义乌市子鱼创意设计有限公司 | A environment-friendly device that road surface dust that is used for road maintenance got rid of |
| CN113399245A (en) * | 2021-05-10 | 2021-09-17 | 桑野 | Material screening plant for construction |
| CN113137266A (en) * | 2021-05-25 | 2021-07-20 | 平顶山天安煤业股份有限公司 | Circulating dustproof curtain of dustproof spraying water conservancy |
| CN113137266B (en) * | 2021-05-25 | 2023-09-01 | 平顶山天安煤业股份有限公司 | Dustproof spraying water conservancy circulation formula dustproof curtain |
| CN113605958A (en) * | 2021-09-16 | 2021-11-05 | 云南滇东雨汪能源有限公司 | Dust collector is used in colliery site operation |
| CN113605958B (en) * | 2021-09-16 | 2023-12-01 | 云南滇东雨汪能源有限公司 | Dust collector is used in colliery site operation |
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Application publication date: 20180619 |
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| RJ01 | Rejection of invention patent application after publication |