CN115501720A - Dust device for coal exploitation - Google Patents
Dust device for coal exploitation Download PDFInfo
- Publication number
- CN115501720A CN115501720A CN202211176084.5A CN202211176084A CN115501720A CN 115501720 A CN115501720 A CN 115501720A CN 202211176084 A CN202211176084 A CN 202211176084A CN 115501720 A CN115501720 A CN 115501720A
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- Prior art keywords
- dust
- rigid coupling
- dust removal
- top surface
- wall
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- 239000000428 dust Substances 0.000 title claims abstract description 111
- 239000003245 coal Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 230000008878 coupling Effects 0.000 claims abstract description 44
- 238000010168 coupling process Methods 0.000 claims abstract description 44
- 238000005859 coupling reaction Methods 0.000 claims abstract description 44
- 238000005065 mining Methods 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 238000009423 ventilation Methods 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Classifications
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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
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
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- 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)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a dust falling device for coal mining, which comprises: the bottom plate, the top surface both sides of bottom plate rigid coupling respectively has dust removal case and storage water tank, the dust removal incasement sets up filter mechanism, wind in the dust removal case filter mechanism circumference array is provided with a plurality of hitting and beats the mechanism, the top surface of dust removal case is provided with dust absorption mechanism, the ventilation hole has been seted up to dust removal case side, the ventilation hole is provided with the fan, is located in the clearance the rigid coupling has the arc pipe on the storage water tank outer wall, equidistant intercommunication is provided with a plurality of atomizer on the arc pipe outer wall, the storage water tank side is provided with actuating mechanism. The invention can avoid the real-time adjustment of the dust-settling device in the dust-settling process, thereby greatly improving the working efficiency.
Description
Technical Field
The invention relates to the technical field of underground dust removal in coal mining, in particular to a dust falling device for coal mining.
Background
Coal needs to be mined in a mine, the environment inside the mine is very severe, dust is fully distributed in the air, workers can damage the health of the bodies when working in the environment, and the service life of the machine can be reduced.
In the related art, the patent with publication number "CN112483161A" discloses "including base and spray pipe," the first motor starts, make the contained angle produce the change between first connecting rod and the second connecting rod, realize adjusting in the spray pipe direction of height, the second motor starts, realize the rotation of drive plate, thereby realized the horizontal rotation angle modulation of spray pipe, the third motor starts, drive the fifth connecting rod and drive the fourth connecting rod rotatory, realize that the piston board pushes water in the spray pipe via the elastic hose, the fourth motor starts, order about the flabellum rotation, order about the spraying dust fall, the third motor drives the semi-circular gear rotatory, order about the running gear to drive the spray pipe reciprocal every single move regulation back and forth, realize the spray pipe every single move regulation while, spray while, make the spraying range promote greatly, have the technical scheme of height and the wide advantage of angle regulation and spraying range.
Aiming at the related technology, the inventor finds that when the technical scheme is used for propelling dust removal in a mine, in order to realize comprehensive dust removal in the mine, the angle adjustment of the spraying pipe, namely the linkage adjustment among lifting, rotating and elevation angles, is needed in the advancing process, and when the water mist spraying dust removal is carried out, an operator needs to carry out multiple times of adjustment according to different underground conditions, so that the working efficiency is seriously influenced.
Disclosure of Invention
The invention aims to provide a dust falling device for coal mining, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a dust falling device for coal mining, which comprises:
the bottom plate, the top surface both sides of bottom plate rigid coupling respectively has dust removal case and storage water tank, the bottom surface four corners of bottom plate rigid coupling respectively has the universal wheel, the dust removal incasement sets up filter mechanism, the dust removal incasement winds filter mechanism circumference array is provided with a plurality of hitting and beats the mechanism, the top surface of dust removal case is provided with dust absorption mechanism, dust absorption mechanism with the filter mechanism intercommunication sets up, the dust removal case with form the clearance between the storage water tank, the ventilation hole has been seted up to dust removal case side, the ventilation hole with the clearance intercommunication sets up, the ventilation hole is provided with the fan, is located in the clearance the rigid coupling has the arc pipe on the storage water tank outer wall, equidistant intercommunication is provided with a plurality of atomizer on the arc pipe outer wall, the arc pipe with the storage water tank passes through water spray mechanism intercommunication, storage water tank side top intercommunication is provided with the inlet tube, storage water tank top surface rigid coupling has the battery, the storage water tank side is provided with actuating mechanism.
Preferably, dust absorption mechanism includes the inner tube, the bottom rigid coupling of inner tube is in the top surface of dust removal case, just the inner tube with filtering mechanism intercommunication sets up, the cover is equipped with the outer tube on the outer wall of inner tube, the inner wall of outer tube with inner tube outer wall sliding contact, outer tube top side intercommunication is provided with the suction hood, the side of outer tube is provided with lifting unit.
Preferably, the lifting component comprises a lifting motor, the lifting motor is fixedly connected with the top surface of the dust removal box, the output end of the lifting motor is fixedly connected with a screw rod, the bottom of the side surface of the outer tube is fixedly connected with a lifting plate, a lifting hole is formed in the top surface of the lifting plate, and the lifting hole is connected with the screw rod through threads.
Preferably, actuating mechanism includes the handrail, the handrail rigid coupling is in the side of storage water tank, there is some bracing pieces of top surface both sides rigid coupling of storage water tank respectively, two the top surface rigid coupling of bracing piece has the waterproof board, the waterproof board sets up to the arc structure, the handrail is located under the waterproof board.
Preferably, the water spraying mechanism comprises a water pump, the water pump is fixedly connected to the bottom surface of the inner cavity of the water storage tank, the input end of the water pump is communicated with the inner cavity of the water storage tank, the output end of the water pump is communicated with one end provided with a water spraying pipe, and the other end of the water spraying pipe penetrates through the water storage tank and is communicated with the arc-shaped pipe.
Preferably, the outer wall of the dust removing box and the outer wall of the water storage tank which are positioned at two sides of the gap are respectively and fixedly connected with arc-shaped plates, and a guide cavity is formed between the two arc-shaped plates.
Preferably, filtering mechanism includes the sack, the top and the bottom of sack are open setting, dust removal incasement chamber top surface rigid coupling has last holding ring, it has last holding ring to go up the holding ring outer wall through threaded connection, the top of sack is located go up the holding ring with go up between the holding ring, bottom plate top surface rigid coupling has lower fixed ring, lower fixed ring's outer wall has lower holding ring through threaded connection, the bottom of sack is located lower fixed ring with between the lower holding ring, the sack inner chamber with the inner tube intercommunication sets up.
Preferably, the bottom surface of the bottom plate is provided with a threaded hole, the threaded hole is communicated with the inner cavity of the cloth bag, and the inner wall of the threaded hole is connected with an end cover through threads.
Preferably, hit the mechanism including hitting the motor, hit the motor rigid coupling and be in bottom plate top surface, hit the motor and be located the dust removal incasement, the output rigid coupling of hitting the motor has the pivot, the rigid coupling has a plurality of poles of hitting on the outer wall of pivot.
Preferably, the side surface of the dust removal box is detachably connected with a door panel.
The invention discloses the following technical effects: the dust removal device adopts two dust removal modes, namely, dust removal is carried out by adopting a wind power dust removal mode and a water spray dust removal mode, when the whole device works, the fan is started to enable the dust removal mechanism arranged at the front end to absorb dust, dust in a space in front of the advancing direction of the device is preliminarily adsorbed and enters the filtering mechanism to be filtered, the fan blows adsorbed wind into a gap after the dust is filtered by the filtering mechanism, meanwhile, the water in the water storage tank is guided into the arc-shaped pipe by the water spray mechanism and is atomized and sprayed out by the atomizing nozzle, and after the wind is sprayed out along the gap, a water wall is formed to comprehensively clean underground dust.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a dust-settling device for coal mining of the present invention;
FIG. 2 is a schematic view of the construction of the arced tube of the present invention;
FIG. 3 is a schematic view of the fan of the present invention;
wherein, 1, a bottom plate; 2. a dust removal box; 3. a water storage tank; 4. a universal wheel; 5. a gap; 6. a fan; 7. an arc-shaped tube; 8. an atomizing spray head; 9. a water inlet pipe; 10. a storage battery; 11. an inner tube; 12. an outer tube; 13. a dust hood; 14. a lifting motor; 15. a screw; 16. a lifting plate; 17. a handrail; 18. a support bar; 19. a waterproof sheet; 20. a water pump; 21. a water spray pipe; 22. an arc-shaped plate; 23. a cloth bag; 24. an upper positioning ring; 25. an upper limiting ring; 26. a lower fixing ring; 27. a lower retainer ring; 28. an end cap; 29. a striking motor; 30. a rotating shaft; 31. a striking rod; 32. a door panel is provided.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Referring to fig. 1 to 3, the present invention provides a dust falling device for coal mining, comprising:
The dust removal device adopts two dust removal modes, namely, the dust removal is carried out by adopting a wind power dust collection mode and a water spray dust removal mode, when the whole device works, the fan 6 is started to enable the dust collection mechanism arranged at the front end to collect dust, dust in a space in front of the advancing direction of the device is preliminarily adsorbed and enters the filtering mechanism to be filtered, after the dust is filtered by the filtering mechanism, the fan 6 blows adsorbed wind into the gap 5, meanwhile, the water in the water storage tank 3 is guided into the arc-shaped pipe 7 by the arranged water spray mechanism and is atomized and sprayed out by the atomizing nozzle 8, after the wind is sprayed out along the gap 5, a water wall is formed, underground dust is comprehensively cleaned, the arranged dust collection mechanism achieves preliminary dust removal, the working strength of subsequent water spray dust removal is reduced, the dust removal efficiency is improved, meanwhile, the device avoids real-time adjustment of the dust removal device in the dust removal process, the working efficiency is greatly improved, the arranged driving mechanism achieves the driving effect of workers on the whole device, the arranged water inlet pipe 9 is used for supplementing water into the water storage tank 3, and the electric property of the storage battery 10 for supplying power to the whole device.
Further optimize the scheme, dust absorption mechanism includes inner tube 11, and the bottom rigid coupling of inner tube 11 is at the top surface of dust removal case 2, and inner tube 11 and filtering mechanism intercommunication set up, and the cover is equipped with outer tube 12 on the outer wall of inner tube 11, the inner wall and the 11 outer wall sliding contact of inner tube of outer tube 12, and outer tube 12 top side intercommunication is provided with suction hood 13, and the side of outer tube 12 is provided with lifting unit.
The lifting unit who sets up can carry out the ascending position adjustment of vertical side to outer tube 12, and then has realized that suction hood 13 is carrying out the dust absorption position of absorption in-process, the dust absorption effect that has strengthened by a wide margin improves adaptability. The outer pipe 12 and the inner pipe 11 that set up sliding contact have realized the intercommunication of dust absorption cover 13 with filter mechanism, make the dust that inhales can filter in filter mechanism.
Further optimize the scheme, lifting unit includes elevator motor 14, and elevator motor 14 rigid coupling is at the top surface of dust removal case 2, and elevator motor 14's output rigid coupling has screw rod 15, and the side bottom rigid coupling of outer tube 12 has lifter plate 16, and the lift hole has been seted up to lifter plate 16 top surface, and the lift hole passes through threaded connection with screw rod 15.
The arranged lifting motor 14 drives the screw rod 15 to rotate, and drives the lifting plate 16 to lift under the limiting action of the outer pipe 12 and the inner pipe 11, so that the lifting action of the outer pipe 12 is realized.
Further optimize the scheme, actuating mechanism includes handrail 17, and handrail 17 rigid coupling is in the side of storage water tank 3, and the top surface both sides of storage water tank 3 are the bracing piece 18 that the rigid coupling has respectively, and the top surface rigid coupling of two bracing pieces 18 has waterproof board 19, and waterproof board 19 sets up to the arc structure, and handrail 17 is located waterproof board 19 under.
The handrail 17 that sets up is used for supplying the staff to drive whole device and uses, and the waterproof board 19 that sets up can protect spun water smoke, avoids drenching the staff.
Further optimize scheme, water spray mechanism includes water pump 20, and water pump 20 rigid coupling is in 3 inner chamber bottom surfaces of storage water tank, and water pump 20 input and 3 inner chamber intercommunications of storage water tank, the one end that water pump 20 output intercommunication was provided with spray pipe 21, and the other end of spray pipe 21 runs through storage water tank 3 and the setting of 7 intercommunications of arc pipe.
The water pump 20 is arranged at the bottom of the inner cavity of the water storage tank 3, so that the water in the water storage tank 3 is pumped into the arc-shaped pipe 7.
Further optimize the scheme, the outer wall of the dust removing box 2 and the outer wall of the water storage box 3 which are positioned at two sides of the gap 5 are respectively and fixedly connected with an arc-shaped plate 22, and a guide cavity is formed between the two arc-shaped plates 22.
The outer ring edges of the two arc-shaped plates 22 are of a semicircular structure, so that the directional flow distance of wind can be prolonged, the sprayed water wall can be longer, the whole cross section of the underground passage is covered, and the dust settling effect is improved.
Further optimize the scheme, filtering mechanism includes sack 23, the top and the bottom of sack 23 are open setting, 2 inner chamber top surfaces rigid couplings of dust removal case have last holding ring 24, it has last holding ring 25 to go up the holding ring 24 outer wall through threaded connection, the top of sack 23 is located between last holding ring 24 and last holding ring 25, 1 top surface rigid coupling of bottom plate has lower fixed ring 26, holding ring 27 under the outer wall of lower fixed ring 26 has through threaded connection, the bottom of sack 23 is located under between fixed ring 26 and the lower holding ring 27, the sack 23 inner chamber sets up with 11 intercommunications of inner tube.
The cloth bag 23 that sets up is fixed in dust removal case 2 through last holding ring 24, lower holding ring 27, last holding ring 25 and lower fixed ring 26, when having realized the rigidity, still is convenient for change.
In a further optimized scheme, a threaded hole is formed in the bottom surface of the bottom plate 1 and communicated with the inner cavity of the cloth bag 23, and the inner wall of the threaded hole is connected with an end cover 28 through threads.
The dust at the bottom of the cloth bag 23 is exhausted by opening the end cover 28.
According to a further optimized scheme, the striking mechanism comprises a striking motor 29, the striking motor 29 is fixedly connected to the top surface of the bottom plate 1, the striking motor 29 is located in the dust removal box 2, the output end of the striking motor 29 is fixedly connected with a rotating shaft 30, and the outer wall of the rotating shaft 30 is fixedly connected with a plurality of striking rods 31.
The beating rod 31 that sets up hits the sack 23 and hits the power, avoids a large amount of dust to be attached to on the sack 23 inner wall, influences the velocity of flow that wind passed through, simultaneously, can concentrate the below at sack 23 with the dust in the sack 23, is convenient for collect.
In a further optimized scheme, the door plate 32 is detachably connected to the side surface of the dust removal box 2.
The cloth bag 23 is periodically replaced after the door plate 32 is opened.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. The utility model provides a dust device for coal mining which characterized in that includes:
bottom plate (1), the top surface both sides of bottom plate (1) rigid coupling respectively has dust removal case (2) and storage water tank (3), the bottom surface four corners of bottom plate (1) rigid coupling respectively has universal wheel (4), set up filtering mechanism in dust removal case (2), wind in dust removal case (2) filtering mechanism circumference array is provided with a plurality of hitting mechanism, the top surface of dust removal case (2) is provided with dust absorption mechanism, dust absorption mechanism with the filtering mechanism intercommunication sets up, dust removal case (2) with form clearance (5) between storage water tank (3), the ventilation hole has been seted up to dust removal case (2) side, the ventilation hole with clearance (5) intercommunication sets up, the ventilation hole is provided with fan (6), is located in clearance (5) the rigid coupling has arc pipe (7) on storage water tank (3) outer wall, equidistant intercommunication is provided with a plurality of atomizer (8) on arc pipe (7) outer wall, arc pipe (7) with storage water tank (3) is through water spray mechanism intercommunication, storage water tank (3) side top intercommunication is provided with inlet tube (9), storage water tank (3) top surface intercommunication, storage water tank (3) top surface has battery (10), storage battery (3) top surface drive mechanism is provided with.
2. The dust fall device for coal mining according to claim 1, characterized in that: dust absorption mechanism includes inner tube (11), the bottom rigid coupling of inner tube (11) is in the top surface of dust removal case (2), just inner tube (11) with filtering mechanism intercommunication sets up, the cover is equipped with outer tube (12) on the outer wall of inner tube (11), the inner wall of outer tube (12) with inner tube (11) outer wall sliding contact, outer tube (12) top side intercommunication is provided with suction hood (13), the side of outer tube (12) is provided with lifting unit.
3. The coal mining dust falling device according to claim 2, characterized in that: lifting unit includes elevator motor (14), elevator motor (14) rigid coupling is in the top surface of dust removal case (2), the output rigid coupling of elevator motor (14) has screw rod (15), the side bottom rigid coupling of outer tube (12) has lifter plate (16), the lift hole has been seted up to lifter plate (16) top surface, the lift hole with screw rod (15) are through threaded connection.
4. The dust fall device for coal mining according to claim 1, characterized in that: actuating mechanism includes handrail (17), handrail (17) rigid coupling is in the side of storage water tank (3), the top surface both sides of storage water tank (3) are the bracing piece (18) that have the rigid coupling respectively, two the top surface rigid coupling of bracing piece (18) has waterproof board (19), waterproof board (19) set up to the arc structure, handrail (17) are located under waterproof board (19).
5. The dust fall device for coal mining according to claim 1, characterized in that: the water spraying mechanism comprises a water pump (20), the water pump (20) is fixedly connected to the bottom surface of the inner cavity of the water storage tank (3), the input end of the water pump (20) is communicated with the inner cavity of the water storage tank (3), the output end of the water pump (20) is communicated with one end provided with a water spraying pipe (21), and the other end of the water spraying pipe (21) penetrates through the water storage tank (3) and the arc-shaped pipe (7) in a communicated mode.
6. The dust falling device for coal mining according to claim 1, characterized in that: the dust removal box (2) outer wall and the water storage tank (3) outer wall which are positioned on two sides of the gap (5) are respectively and fixedly connected with an arc-shaped plate (22), and a guide cavity is formed between the arc-shaped plates (22).
7. The coal mining dust falling device according to claim 2, characterized in that: filtering mechanism includes sack (23), the top and the bottom of sack (23) are open setting, dust removal case (2) inner chamber top surface rigid coupling has last holding ring (24), it has upper limit ring (25) to go up holding ring (24) outer wall through threaded connection, the top of sack (23) is located go up holding ring (24) with between upper limit ring (25), bottom plate (1) top surface rigid coupling has lower solid fixed ring (26), the outer wall of lower solid fixed ring (26) has lower holding ring (27) through threaded connection, the bottom of sack (23) is located lower solid fixed ring (26) with between lower holding ring (27), sack (23) inner chamber with inner tube (11) intercommunication sets up.
8. The dust falling device for coal mining according to claim 7, characterized in that: the bottom surface of the bottom plate (1) is provided with a threaded hole, the threaded hole is communicated with the inner cavity of the cloth bag (23), and the inner wall of the threaded hole is connected with an end cover (28) through threads.
9. The coal mining dust falling device according to claim 8, characterized in that: hit mechanism including hitting motor (29), hit motor (29) rigid coupling and be in bottom plate (1) top surface, hit motor (29) and be located in dust removal case (2), the output rigid coupling of hitting motor (29) has pivot (30), the rigid coupling has a plurality of hitting poles (31) on the outer wall of pivot (30).
10. The dust falling device for coal mining according to claim 9, characterized in that: the side of the dust removal box (2) is detachably connected with a door plate (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211176084.5A CN115501720A (en) | 2022-09-26 | 2022-09-26 | Dust device for coal exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211176084.5A CN115501720A (en) | 2022-09-26 | 2022-09-26 | Dust device for coal exploitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115501720A true CN115501720A (en) | 2022-12-23 |
Family
ID=84506945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211176084.5A Withdrawn CN115501720A (en) | 2022-09-26 | 2022-09-26 | Dust device for coal exploitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115501720A (en) |
-
2022
- 2022-09-26 CN CN202211176084.5A patent/CN115501720A/en not_active Withdrawn
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| PB01 | Publication | ||
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Application publication date: 20221223 |