CN110917770A - A filter equipment that is used for colliery inside to prevent dust and uses - Google Patents
A filter equipment that is used for colliery inside to prevent dust and uses Download PDFInfo
- Publication number
- CN110917770A CN110917770A CN201911266354.XA CN201911266354A CN110917770A CN 110917770 A CN110917770 A CN 110917770A CN 201911266354 A CN201911266354 A CN 201911266354A CN 110917770 A CN110917770 A CN 110917770A
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- Prior art keywords
- dust
- filter
- bracket
- water
- pipe
- 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
- 239000000428 dust Substances 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000003245 coal Substances 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000003651 drinking water Substances 0.000 claims description 7
- 235000020188 drinking water Nutrition 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 2
- 239000010883 coal ash Substances 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/028—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by directing the gas through a wetted wire mesh or a perforated plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides a filter device for preventing dust in a coal mine. The filter device for preventing dust in the coal mine comprises a bottom plate; the water tank is fixedly arranged at the top of the bottom plate; the supporting plate is fixedly arranged at the top of the bottom plate; the top bracket is fixedly arranged at the top of the supporting plate; a moving mechanism disposed on the top bracket; the dust removal mechanism is arranged on the moving mechanism and the bottom plate; the transverse bracket is fixedly arranged on one side of the supporting plate; the metal net is fixedly arranged on one side of the transverse support. The filter device for preventing dust in the coal mine provided by the invention has the advantages that the coal ash can be effectively absorbed, the influence of the coal ash on the human health can be reduced, and the coal ash can be recycled.
Description
Technical Field
The invention relates to the technical field of coal mines, in particular to a dust-proof filtering device used in a coal mine.
Background
The coal mine is an area where people mine coal resources in a coal-rich mining area, and is generally divided into a mineworker coal mine and an opencast coal mine, when a coal bed is far away from the ground surface, coal is generally selected to dig a tunnel to the underground, the mineworker coal mine is the mineworker coal mine, when the coal bed is very close to the ground surface, the direct stripping of the surface soil layer is generally selected to dig the coal, the opencast coal mine is the opencast coal mine, most coal mines in China belong to the mineworker coal mine, the coal mine range comprises large areas of the ground, the underground and related facilities, the coal mine is a reasonable space which is excavated by people when digging geological strata rich in the coal, the coal mine generally comprises the tunnel, the underground, a digging surface and the like, the coal is the most main solid fuel, is one of combustible organic rock, is formed by flourishing plants growing in a certain geological age, gradually forming a thick layer in a proper geological environment, is buried in the water bottom or silt and is subjected to the natural coal effect of the long geological age, in the geological periods around the world, most coal is produced in stratums of the carbolite period, the diadsic period, the Jurassic period and the third period, which is an important coal-forming age, the carbon content of the coal is generally 46-97%, the coal is brown to black and has dull to metallic luster, and the coal can be divided into peat, lignite, bituminous coal and anthracite according to different coalification degrees.
Traditional colliery needs carry out the breakage to the waste rock, still need transport operation such as from underground mining after coming, and more coal ash is filled in the air, and the peripheral road in colliery also generally has more dust, influences people's healthy.
Therefore, there is a need to provide a new filter device for preventing dust in coal mine.
Disclosure of Invention
The invention aims to provide a filter device for preventing dust in a coal mine, which can effectively absorb coal ash, reduce the influence of the coal ash on human health and can be recycled.
In order to solve the technical problem, the invention provides a filter device for preventing dust in a coal mine, which comprises: a base plate; the water tank is fixedly arranged at the top of the bottom plate; the supporting plate is fixedly arranged at the top of the bottom plate; the top bracket is fixedly arranged at the top of the supporting plate; a moving mechanism disposed on the top bracket; the dust removal mechanism is arranged on the moving mechanism and the bottom plate; the transverse bracket is fixedly arranged on one side of the supporting plate; the metal net is fixedly arranged on one side of the transverse bracket; the shunt box is fixedly arranged at the top of the top bracket; the water outlet pipe is arranged on one side of the flow distribution box; the plurality of spray heads are all arranged at the bottom of the flow distribution box and are all positioned right above the metal net; the communicating pipe is arranged on one side of the water tank; the filter box is fixedly arranged at the top of the bottom plate, and one end of the communicating pipe extends to the inside of the filter box; the water tank is fixedly arranged at the top of the bottom plate; the water pump is arranged on one side of the supporting plate, and the water outlet pipe is communicated with the water pump; the drinking-water pipe, the drinking-water pipe sets up one side of water pump, just the one end of drinking-water pipe extends to the inside of water tank.
Preferably, moving mechanism includes two fixed blocks, threaded rod, first belt pulley, motor, second belt pulley, belt, fixed plate and L support, two the equal fixed mounting of fixed block is in the bottom of top support, the threaded rod rotates to be installed two on the fixed block, the fixed cover of first belt pulley is established on the threaded rod, motor fixed mounting is in the top of top support, the fixed cover of second belt pulley is established on the output shaft of motor, the belt winding is in the second belt pulley with between the first belt pulley, the fixed plate screw thread is installed on the threaded rod, L support fixed mounting is in the bottom of fixed plate.
Preferably, the fixing blocks are provided with first through holes, the first through holes are provided with bearings, the outer rings of the bearings are fixedly connected with the inner walls of the first through holes respectively, and the inner rings of the bearings are fixedly sleeved on the threaded rods.
Preferably, a sliding rod is fixedly mounted on one side, close to each other, of each of the two fixing blocks, and the fixing plates are connected with the sliding rods in a sliding mode.
Preferably, a second through hole is formed in the fixing plate, an internal thread is formed in the inner wall of the second through hole, an external thread is formed on the threaded rod, and the external thread of the threaded rod and the internal thread of the second through hole are mutually screwed.
Preferably, dust removal mechanism includes suction hood, fan, joint bellows, return bend and goes out the dust hood, suction hood fixed mounting be in on the L support, the fan sets up on the bottom plate, joint bellows sets up the fan with between the suction hood, the return bend sets up one side of fan, it is in to go out dust hood fixed mounting the one end of return bend.
Preferably, the top of bottom plate fixed mounting has T type support frame, the fan sets up on the T type support frame.
Preferably, a filter screen is arranged in the filter box.
Preferably, one side of the filter box is provided with a protective door.
Preferably, a water valve is arranged on the water tank, and a drain pipe is arranged on one side of the filter box.
Compared with the related art, the filter device for preventing dust in the coal mine provided by the invention has the following beneficial effects:
when the filter device needs to work, a motor is started firstly, a dust hood is aligned to a pollution source, a water pump is started to form a water curtain, then a fan is started, water can effectively absorb dust, the dust in the air is further purified, the health of a human body is protected, the sprayed sewage directly enters the interior of a water tank, enters the interior of a filter box through a communicating pipe, and the water can be effectively recycled through further filtration of a filter screen.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of a filter device for dust protection in a coal mine according to the present invention;
FIG. 2 is a schematic front cross-sectional view of the structure shown in FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of the portion B shown in FIG. 2;
FIG. 5 is a side cross-sectional structural view of the expanded metal shown in FIG. 2;
fig. 6 is a schematic sectional structure view of the filter net shown in fig. 2.
Reference numbers in the figures: 1. the bottom plate, 2, the basin, 3, the backup pad, 4, the top support, 5, the fixed block, 6, the threaded rod, 7, first belt pulley, 8, the motor, 9, the second belt pulley, 10, the belt, 11, the fixed plate, 12, the L support, 13, the suction hood, 14, the fan, 15, connect the bellows, 16, the return bend, 17, go out the dust hood, 18, horizontal support, 19, the metal mesh, 20, the outlet pipe, 21, the reposition of redundant personnel box, 22, the shower nozzle, 23, communicating pipe, 24, the filter cartridge, 25, the water tank, 26, the filter screen, 27, the water pump, 28, the drinking-water pipe.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 to 6, fig. 1 is a schematic structural diagram of a filter device for preventing dust in a coal mine according to a preferred embodiment of the present invention; FIG. 2 is a schematic front cross-sectional view of the structure shown in FIG. 1; FIG. 3 is an enlarged view of portion A of FIG. 2; FIG. 4 is an enlarged view of the portion B shown in FIG. 2; FIG. 5 is a side cross-sectional structural view of the expanded metal shown in FIG. 2; fig. 6 is a schematic sectional structure view of the filter net shown in fig. 2. A filter equipment for dust prevention in coal mine includes: a base plate 1; the water tank 2 is fixedly arranged at the top of the bottom plate 1; the supporting plate 3 is fixedly arranged on the top of the bottom plate 1; the top bracket 4 is fixedly arranged on the top of the support plate 3; a moving mechanism provided on the top bracket 4; the dust removal mechanism is arranged on the moving mechanism and the bottom plate 1; a transverse bracket 18, wherein the transverse bracket 18 is fixedly arranged on one side of the supporting plate 3; the metal net 19 is fixedly arranged on one side of the transverse bracket 18; the shunt box 21 is fixedly arranged at the top of the top bracket 4; the water outlet pipe 20 is arranged on one side of the diversion box 21; a plurality of spray heads 22, wherein the spray heads 22 are all arranged at the bottom of the diversion box 21, and the spray heads 22 are all positioned right above the metal mesh 19; a communication pipe 23, the communication pipe 23 being provided at one side of the water tank 2; the filter box 24 is fixedly arranged on the top of the bottom plate 1, and one end of the communicating pipe 23 extends to the inside of the filter box 24; the water tank 25 is fixedly arranged on the top of the bottom plate 1; the water pump 27 is arranged on one side of the supporting plate 3, and the water outlet pipe 20 is communicated with the water pump 27; a water pumping pipe 28, the water pumping pipe 28 is disposed at one side of the water pump 27, and one end of the water pumping pipe 28 extends to the inside of the water tank 25.
Moving mechanism includes two fixed blocks 5, threaded rod 6, first belt pulley 7, motor 8, second belt pulley 9, belt 10, fixed plate 11 and L support 12, two the equal fixed mounting of fixed block 5 is in the bottom of top support 4, threaded rod 6 rotates and installs two on the fixed block 5, first belt pulley 7 is fixed to be established on the threaded rod 6, motor 8 fixed mounting be in the top of top support 4, the fixed cover of second belt pulley 9 is established on the output shaft of motor 8, belt 10 twines second belt pulley 9 with between the first belt pulley 7, 11 screw threads of fixed plate are installed on threaded rod 6, L support 12 fixed mounting be in the bottom of fixed plate 11.
Two all seted up first through-hole on the fixed block 5, two the inside of first through-hole all is equipped with the bearing, two the outer lane of bearing respectively with two the inner wall fixed connection of first through-hole, two the inner circle of bearing is all fixed the cover and is established on threaded rod 6.
Two the fixed block 5 one side that is close to each other fixed mounting has the slide bar, fixed plate 11 with sliding connection between the slide bar.
The fixed plate 11 is provided with a second through hole, the inner wall of the second through hole is provided with an internal thread, the threaded rod 6 is provided with an external thread, and the external thread of the threaded rod 6 and the internal thread of the second through hole are mutually screwed.
Dust removal mechanism includes suction hood 13, fan 14, connecting bellows 15, return bend 16 and goes out dust hood 17, suction hood 13 fixed mounting be in on the L support 12, fan 14 sets up on the bottom plate 1, connecting bellows 15 sets up fan 14 with between the suction hood 13, return bend 16 sets up one side of fan 14, it is in to go out dust hood 17 fixed mounting the one end of return bend 16.
The top of bottom plate 1 is fixed mounting has T type support frame, fan 14 sets up on the T type support frame.
The filter box 24 is provided with a filter screen 26 inside.
One side of the filter box 24 is provided with a protective door.
A water valve is arranged on the water tank 25, and a drain pipe is arranged on one side of the filter box 24.
The working principle of the filter device for preventing dust in the coal mine provided by the invention is as follows:
when the operation is required, firstly, the motor 8 is started, the motor 8 drives the second belt pulley 9 to move, the second belt pulley 9 drives the belt 10 to move, the belt 10 drives the first belt pulley 7 to move, the first belt pulley 7 drives the threaded rod 6 to move, the threaded rod 6 drives the fixed plate 11 to move, the fixed plate 11 drives the L bracket 12 to move, the L bracket 11 drives the dust hood 13 to move horizontally to move to a pollution source, so that the dust hood 13 is aligned with the pollution source, the water pump 27 is started, the water pump 27 drives the water pumping pipe 28 to pump up water in the water tank 25, the water passes through the water outlet pipe 20 and the diversion box 21, the water is sprayed on the surface of the metal net 19 through the spray head 22 to form a water curtain, then the fan 14 is started, the fan 14 drives the dust hood 13 to suck dust and coal ash in the operation process through the connecting corrugated pipe 15, and finally the dust removal operation is carried out through, water can effectual absorption dust, has further purified the dust in the air, has protected human health, and the inside that the sewage that forms directly got into basin 2 after spraying gets into filter cartridge 24 through communicating pipe 23, through the further filtration of filter screen 26, water can effectual recycle.
Compared with the related art, the filter device for preventing dust in the coal mine provided by the invention has the following beneficial effects:
when the filter device needs to work, firstly, a motor 8 is started, a dust hood 13 is aligned to a pollution source, a water pump 27 is started to form a water curtain, then a fan 14 is started, water can effectively absorb dust, the dust in the air is further purified, the health of a human body is protected, the sprayed sewage directly enters the inside of a water tank 2, enters the inside of a filter box 24 through a communicating pipe 23, and is further filtered through a filter screen 26, and the water can be effectively recycled.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A filter equipment that is used for inside dust prevention in colliery to use which characterized in that includes: a base plate;
the water tank is fixedly arranged at the top of the bottom plate;
the supporting plate is fixedly arranged at the top of the bottom plate;
the top bracket is fixedly arranged at the top of the supporting plate;
a moving mechanism disposed on the top bracket;
the dust removal mechanism is arranged on the moving mechanism and the bottom plate;
the transverse bracket is fixedly arranged on one side of the supporting plate;
the metal net is fixedly arranged on one side of the transverse bracket;
the shunt box is fixedly arranged at the top of the top bracket;
the water outlet pipe is arranged on one side of the flow distribution box;
the plurality of spray heads are all arranged at the bottom of the flow distribution box and are all positioned right above the metal net;
the communicating pipe is arranged on one side of the water tank;
the filter box is fixedly arranged at the top of the bottom plate, and one end of the communicating pipe extends to the inside of the filter box;
the water tank is fixedly arranged at the top of the bottom plate;
the water pump is arranged on one side of the supporting plate, and the water outlet pipe is communicated with the water pump;
the drinking-water pipe, the drinking-water pipe sets up one side of water pump, just the one end of drinking-water pipe extends to the inside of water tank.
2. The filter device for preventing dust in the coal mine as claimed in claim 1, wherein the moving mechanism comprises two fixed blocks, a threaded rod, a first belt pulley, a motor, a second belt pulley, a belt, a fixed plate and an L bracket, the two fixed blocks are all fixedly mounted at the bottom of the top bracket, the threaded rod is rotatably mounted on the two fixed blocks, the first belt pulley is fixedly sleeved on the threaded rod, the motor is fixedly mounted at the top of the top bracket, the second belt pulley is fixedly sleeved on the output shaft of the motor, the belt is wound between the second belt pulley and the first belt pulley, the fixed plate is threadedly mounted on the threaded rod, and the L bracket is fixedly mounted at the bottom of the fixed plate.
3. The filter device for preventing dust in coal mines as claimed in claim 2, wherein first through holes are formed in both of the two fixing blocks, bearings are arranged in both of the two first through holes, outer rings of the two bearings are fixedly connected with inner walls of the two first through holes respectively, and inner rings of the two bearings are fixedly sleeved on the threaded rod.
4. The filter device for preventing dust in the coal mine as claimed in claim 2, wherein a sliding rod is fixedly mounted on one side of the two fixing blocks close to each other, and the fixing blocks are connected with the sliding rod in a sliding manner.
5. The filter device for preventing dust in the coal mine as claimed in claim 2, wherein the fixing plate is provided with a second through hole, the inner wall of the second through hole is provided with an internal thread, the threaded rod is provided with an external thread, and the external thread of the threaded rod and the internal thread of the second through hole are mutually screwed.
6. The filter device for preventing dust in the coal mine according to claim 2, wherein the dust removing mechanism comprises a dust hood, a fan, a connecting corrugated pipe, an elbow pipe and a dust outlet hood, the dust hood is fixedly installed on the L-shaped bracket, the fan is arranged on the bottom plate, the connecting corrugated pipe is arranged between the fan and the dust hood, the elbow pipe is arranged on one side of the fan, and the dust outlet hood is fixedly installed at one end of the elbow pipe.
7. The filter device for preventing dust in the coal mine as claimed in claim 6, wherein a T-shaped support frame is fixedly installed at the top of the bottom plate, and the fan is arranged on the T-shaped support frame.
8. A filter arrangement for use in preventing dust from within a coal mine as claimed in claim 1 wherein the filter box is internally provided with a filter screen.
9. A filter arrangement for use in preventing dust from within a coal mine as claimed in claim 1 wherein one side of the filter box is provided with a guard door.
10. The filter apparatus for preventing dust in coal mines as set forth in claim 1, wherein the water tank is provided with a water valve, and one side of the filter box is provided with a drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266354.XA CN110917770A (en) | 2019-12-11 | 2019-12-11 | A filter equipment that is used for colliery inside to prevent dust and uses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266354.XA CN110917770A (en) | 2019-12-11 | 2019-12-11 | A filter equipment that is used for colliery inside to prevent dust and uses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110917770A true CN110917770A (en) | 2020-03-27 |
Family
ID=69858937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911266354.XA Pending CN110917770A (en) | 2019-12-11 | 2019-12-11 | A filter equipment that is used for colliery inside to prevent dust and uses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110917770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207884A (en) * | 2020-08-24 | 2021-01-12 | 盐城工学院 | Full-automatic dust-absorbing cutting machine for new material production |
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| CN206350969U (en) * | 2016-12-27 | 2017-07-25 | 侯亚辰 | A kind of large-scale plant area's waste incinerator soot processing device of orientation controllable adjustment |
| CN107023315A (en) * | 2017-05-31 | 2017-08-08 | 北京中煤矿山工程有限公司 | A kind of driving face in coal mine dedusting catches dirt system with gluing |
| CN207212394U (en) * | 2017-09-18 | 2018-04-10 | 张弘弦 | A kind of colliery high effect dust cleaner |
| CN108979699A (en) * | 2018-07-18 | 2018-12-11 | 芜湖青悠静谧环保科技有限公司 | A kind of ventilating system of tunnel dust removal by filtration |
| CN209237619U (en) * | 2018-11-21 | 2019-08-13 | 青岛海尔电子塑胶有限公司 | A kind of plastics dust processing device |
-
2019
- 2019-12-11 CN CN201911266354.XA patent/CN110917770A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205677658U (en) * | 2016-05-31 | 2016-11-09 | 山西潞安环保能源开发股份有限公司漳村煤矿 | Coal mine gas extraction pipeline deslagging, dedusting, the Trinity that discharges water device |
| CN206350969U (en) * | 2016-12-27 | 2017-07-25 | 侯亚辰 | A kind of large-scale plant area's waste incinerator soot processing device of orientation controllable adjustment |
| CN107023315A (en) * | 2017-05-31 | 2017-08-08 | 北京中煤矿山工程有限公司 | A kind of driving face in coal mine dedusting catches dirt system with gluing |
| CN207212394U (en) * | 2017-09-18 | 2018-04-10 | 张弘弦 | A kind of colliery high effect dust cleaner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207884A (en) * | 2020-08-24 | 2021-01-12 | 盐城工学院 | Full-automatic dust-absorbing cutting machine for new material production |
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| PB01 | Publication | ||
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Application publication date: 20200327 |