CN219220481U - Colliery dust fall equipment - Google Patents
Colliery dust fall equipment Download PDFInfo
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- CN219220481U CN219220481U CN202222309764.1U CN202222309764U CN219220481U CN 219220481 U CN219220481 U CN 219220481U CN 202222309764 U CN202222309764 U CN 202222309764U CN 219220481 U CN219220481 U CN 219220481U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The utility model relates to the technical field of coal mine dust removal and discloses coal mine dust settling equipment which comprises a dust cover, a liquid storage device, a bubble injection device, a dust concentration sensor and a control unit, wherein one end of the dust cover is provided with a dust inlet, the bubble injection device and the dust concentration sensor are arranged in the dust cover, the bubble injection device is opposite to the dust inlet, the liquid storage device is connected with the dust cover through a bracket, the liquid storage device is connected with the bubble injection device through a first liquid supply pipe, the control unit is arranged on the bracket, the liquid storage device, the bubble injection device and the dust concentration sensor are in communication connection with the control unit, the bubble injection device generates bubbles to be sprayed out, the bubbles are contacted with coal dust to promote the coal dust to settle, the surface area of the bubbles is large, so that the contact area between the bubbles and the coal dust is large, the adsorption effect on the coal dust is improved, the settling rate and the dust settling efficiency are improved, and the water consumption is less, and the water utilization rate can be improved. In addition, a spraying device is also arranged to assist, so that the dust removal effect is further improved.
Description
Technical Field
The utility model relates to the technical field of coal mine dust removal, in particular to coal mine dust fall equipment.
Background
The coal dust on the fully mechanized coal mining face has high strength, pollutes the operation environment, can cause pneumoconiosis, and can potentially threaten the lives of workers; meanwhile, the dust concentration is too high, so that coal mine dust explosion accidents can be caused, and immeasurable disasters and losses are brought to first-line workers, coal mine enterprises and countries. The treatment of coal dust is particularly important to improving the clean production level of mines and promoting the safety guarantee capability and occupational health level of the mines and preventing and controlling the coal dust explosion accidents. In the dust removing equipment used at present, the wet dust remover has the advantages of simple system, convenient operation and maintenance, but low dust removing efficiency and incapability of removing dust at all.
The prior art discloses a spray dust removal device, which comprises a dust fall cover with a small upper part and a large lower part and a conical shape, wherein the top of the dust fall cover is provided with a first through hole for a drill rod to pass through; a spraying device is arranged on the inner wall of the dust fall cover, is positioned at the upper part of the dust fall cover, and is arranged along the inclined lower direction towards the middle part of the dust fall cover; the dust fall cover is also provided with a water inlet communicated with the spraying device. This patent is dust-falling by spraying, but the contact area of water mist and coal dust is small, resulting in low dust removal efficiency and high water consumption.
Disclosure of Invention
The utility model aims to provide coal mine dust settling equipment with high dust settling efficiency and strong controllability.
In order to achieve the above purpose, the utility model provides a coal mine dust fall device, which comprises a dust cover, a liquid storage device, a bubble injection device, a dust concentration sensor and a control unit, wherein one end of the dust cover is provided with a dust inlet, the bubble injection device and the dust concentration sensor are arranged in the dust cover, the bubble injection device is opposite to the dust inlet, the liquid storage device is connected with the dust cover through a bracket, the liquid storage device is connected with the bubble injection device through a first liquid supply pipe, and the control unit is arranged on the bracket, and the liquid storage device, the bubble injection device and the dust concentration sensor are in communication connection with the control unit.
As the preferred scheme, bubble injection apparatus includes bubble generator and a plurality of water conservancy diversion fan, bubble generator with the water conservancy diversion fan all with the dust cover is connected, a plurality of water conservancy diversion fan is around bubble generator's circumference interval evenly sets up, bubble generator pass through first liquid supply pipe with liquid storage device is connected, bubble generator with water conservancy diversion fan with control unit communication connection.
As the preferred scheme, bubble injection apparatus still includes the installation casing, the installation casing with the dust cover is connected, the installation casing is equipped with accommodation chamber and storage tank, bubble generator locates in the storage tank, the water conservancy diversion fan is located in the accommodation chamber, still be equipped with on the installation casing with the air outlet that the accommodation chamber is linked together, the air outlet with the storage tank is located the same one side of installation casing.
Preferably, the dust concentration sensor is arranged on the installation shell, and the dust concentration sensor and the air outlet are positioned on two adjacent side walls of the installation shell.
As the preferred scheme, still include a plurality of atomizer, atomizer with the dust cover is connected, a plurality of atomizer winds bubble injection apparatus's circumference interval evenly sets up, atomizer through the second feed pipe with liquid storage device is connected, atomizer with the control unit communication connection.
Preferably, the spraying device comprises a spraying column, the spraying column is connected with the dust cover, and a plurality of spraying holes are distributed on the column body of the spraying column.
As the preferred scheme, liquid storage device includes the water tank, deposits liquid case, mixing tank, feed liquor pump and feed liquor valve, the water tank deposit the liquid case respectively with mixing tank connects, just the feed liquor pump with the feed liquor valve is located deposit the liquid case with between the mixing tank, the bubble generator passes through first feed liquor pipe with mixing tank connects, atomizer passes through the second feed liquor pipe with the water tank is connected.
As a preferred scheme, the dust cover includes loading board and cover section of thick bamboo, the cover section of thick bamboo with one side of loading board is connected, bubble injection device dust concentration sensor with the loading board is connected and is located in the cover section of thick bamboo, the cover section of thick bamboo is equipped with a plurality of meshes.
Preferably, the cover cylinder has a rectangular structure, and comprises four cover plates, and the four cover plates are detachably connected with the bearing plate respectively.
As the preferable scheme, the support comprises a base and a support column, wherein the base is connected to one end of the support column, the other end of the support column is connected with the dust cover, and the liquid storage device is arranged on the base.
Compared with the prior art, the utility model has the beneficial effects that:
when the dust-proof device is used, the dust-proof cover is arranged at the outlet of equipment for generating the coal dust device, and when the dust concentration sensor detects that the coal dust concentration in the dust-proof cover reaches a certain value, the control unit controls the air bubble spraying device to start so as to reduce dust, the liquid storage device supplies liquid to the air bubble spraying device, the air bubble spraying device generates air bubble spraying, the air bubble contacts with the coal dust, and the coal dust is prompted to subside, so that the dust-reducing effect is achieved. The surface area of the air bubble is large, so that the contact area of the air bubble and coal dust is large, the adsorption effect on the coal dust is improved, the sedimentation rate and the dust settling efficiency are further improved, the pollution to the working environment caused by escape of the coal dust is prevented, and in addition, the water consumption of the air bubble spraying device is small, so that the water utilization rate can be improved. In addition, the utility model can adjust the injection speed and the injection force of the bubble injection device according to the concentration of coal dust in the environment by arranging the control unit and the dust concentration sensor, and can intelligently remove dust to achieve better dust removal effect.
Drawings
Fig. 1 is a schematic structural view of a coal mine dust removing apparatus according to an embodiment of the present utility model.
Fig. 2 is a schematic structural view of the coal mine dust removing apparatus according to the embodiment of the present utility model without installing the hood.
Fig. 3 is a schematic diagram illustrating connection between a bubble jet device, a spraying device and a carrier plate according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of a bubble generator according to an embodiment of the present utility model.
Fig. 5 is a schematic diagram of a liquid storage device according to an embodiment of the present utility model.
Fig. 6 is a schematic diagram of a coal mine dust removing apparatus in use according to an embodiment of the present utility model.
In the figure, 1-a dust cap; 101-a carrier plate; 102, a cover cylinder; 2-a liquid storage device; 201-a water tank; 202, a liquid storage tank; 203-a mixing box; 204-a liquid inlet pump; 205-liquid inlet valve; 3-a bubble jet device; 301-a bubble generator; 302-mounting a housing; 303-an air outlet; 304-a generation chamber; 305-gas cells; 4-a dust concentration sensor; 5-a control unit; 6-a bracket; 601-a base; 602-supporting columns; 7-a first liquid supply pipe; 8-spraying device; 9-a second liquid supply pipe; 10-a first liquid supply pump; 11-a second liquid supply pump.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
Example 1
As shown in fig. 1 to 6, a dust settling device for coal mine according to a preferred embodiment of the present utility model includes a dust cover 1, a liquid storage device 2, a bubble injection device 3, a dust concentration sensor 4 and a control unit 5, wherein one end of the dust cover 1 is provided with a dust inlet, the bubble injection device 3 and the dust concentration sensor 4 are arranged in the dust cover 1, the bubble injection device 3 is opposite to the dust inlet, the liquid storage device 2 is connected with the dust cover 1 through a bracket 6, the liquid storage device 2 is connected with the bubble injection device 3 through a first liquid supply pipe 7, the control unit 5 is arranged on the bracket 6, and the liquid storage device 2, the bubble injection device 3 and the dust concentration sensor 4 are in communication connection with the control unit 5. In the embodiment, the dust cover 1 is arranged, the bubble injection device 3 and the dust concentration sensor 4 are arranged in the dust cover 1, when the dust cover 1 is covered at the outlet of equipment for generating a coal dust device in use, when the dust concentration sensor 4 detects that the coal dust concentration in the dust cover 1 reaches a certain value, the control unit 5 controls the bubble injection device 3 to start for dust fall, the controllability is high, the intelligent degree is high, the liquid storage device 2 supplies liquid for the bubble injection device 3, the bubble injection device 3 generates bubbles for injection, the bubbles are contacted with coal dust, and the coal dust is caused to settle, so that the effect of dust fall is achieved. The surface area of bubble is big to make the area of contact of bubble and coal dust big, improve the adsorption effect to the coal dust, and then improve sedimentation rate and dust fall efficiency, prevent that the coal dust from escaping and leading to operation environmental pollution, moreover, this embodiment adopts bubble injection apparatus 3's water consumption less, can improve the utilization ratio of water. In addition, the embodiment can adjust the injection speed and the injection force of the bubble injection device 3 according to the concentration of coal dust in the environment by arranging the control unit 5 and the dust concentration sensor 4, so that intelligent dust removal can be realized, and a better dust removal effect is achieved.
Alternatively, the control unit 5 of the present embodiment employs a microprocessor.
Further, the dust fall equipment for the coal mine of the embodiment further comprises a plurality of spraying devices 8, the spraying devices 8 are connected with the dust cover 1, the spraying devices 8 are evenly arranged around the circumferential space of the bubble spraying device 3, the spraying devices 8 are connected with the liquid storage device 2 through the second liquid supply pipe 9, and the spraying devices 8 are in communication connection with the control unit 5. In this embodiment, the spraying device 8 is provided to cooperate with the bubble jet device 3, so that the dust settling efficiency can be improved.
Example two
The present embodiment differs from the first embodiment in that the present embodiment further describes the bubble jet apparatus 3 on the basis of the first embodiment.
In this embodiment, the bubble spraying device 3 includes a bubble generator 301 and a plurality of air guiding fans, the bubble generator 301 and the air guiding fans are all connected with the dust cover 1, the plurality of air guiding fans are uniformly arranged around the circumferential space of the bubble generator 301, the bubble generator 301 is connected with the liquid storage device 2 through the first liquid supply pipe 7, and the bubble generator 301 is in communication connection with the air guiding fans and the control unit 5. The air guide fan can enable the air bubbles generated by the air bubble generator 301 to face the coal dust, so that the air bubbles are in full contact with the coal dust, waste caused by the air bubbles being blown to the cover wall of the dust cover 1 by the coal dust is avoided, meanwhile, the air guide fan can achieve the effect of dispersing the coal dust, the air bubbles are combined with the coal dust, and the dust settling effect is improved.
Further, the air bubble spraying device 3 of this embodiment further includes a mounting housing 302, the mounting housing 302 is connected with the dust cover 1, the mounting housing 302 is provided with a containing cavity and a containing groove, the air bubble generator 301 is disposed in the containing groove, the air guiding fan is disposed in the containing cavity, the mounting housing 302 is further provided with an air outlet 303 communicated with the containing cavity, and the air outlet 303 and the containing groove are disposed on the same side of the mounting housing 302. The air guide fan is arranged in the accommodating cavity and the bubble generator is arranged in the accommodating groove, so that the air guide fan can play a role in protecting, and the influence of coal dust on the normal operation of the air guide fan due to pollution of the air guide fan is avoided.
In the present embodiment, the dust concentration sensor 4 is provided on the installation housing 302, and the dust concentration sensor 4 and the air outlet 303 are located on both side walls adjacent to the installation housing 302. The problem of inaccurate detection of the dust concentration sensor 4 due to the dispersion of the coal dust by the diversion fan when the dust concentration sensor 4 and the air outlet 303 are positioned on the same side wall of the installation shell 302 can be avoided.
The bubble generator 301 of the present embodiment employs a bubble machine. Specifically, the bubble generator 301 includes a first liquid supply pump 10, a generating housing 304, an air blower and a film forming mechanism, the generating housing 304 is provided with a generating cavity 304, the generating cavity 304 is connected with the first liquid supply pump 10 through a section of first liquid supply pipe 7, the first liquid supply pump 10 is connected with the liquid storage device 2 through another section of first liquid supply pipe 7, the film forming mechanism is arranged in the generating cavity 304, a plurality of bubble holes 305 communicated with the generating cavity 304 are formed in the generating housing 304, the air blower is mounted on the generating housing 304 and communicated with the generating cavity 304, and the air blower is used for supplying air to the generating cavity 304. The first liquid supply pump 10 is started, liquid flows into the generating cavity 304 from the liquid storage device 2, the film forming mechanism scrapes a film on one side provided with the air cavity 305, and subsequent liquid continuously forms bubbles at the film and is emitted under the blowing of the air blower.
Other structures of this embodiment are the same as those of the first embodiment, and will not be described here again.
Example III
The difference between this embodiment and the second embodiment is that this embodiment further describes the spraying device 8 on the basis of the second embodiment.
In this embodiment, the spraying device 8 includes a spraying post, the spraying post is connected with the dust cover 1, and a plurality of spraying holes are distributed on the post body of the spraying post. The spraying holes are formed in the whole body of the spraying column, so that the spraying quantity of spraying can be improved, the spraying holes are distributed in a three-dimensional mode, the coverage area can be improved, and the dust settling effect is improved.
Other structures of this embodiment are the same as those of the first embodiment, and will not be described here again.
Example IV
The difference between this embodiment and the third embodiment is that this embodiment further describes the liquid storage device 2 on the basis of the third embodiment.
In the present embodiment, the liquid storage device 2 includes a water tank 201, a liquid storage tank 202, a mixing tank 203, a liquid inlet pump 204 and a liquid inlet valve 205, the water tank 201, the liquid storage tank 202 are respectively connected with the mixing tank 203, and the liquid inlet pump 204 and the liquid inlet valve 205 are provided between the liquid storage tank 202 and the mixing tank 203, the bubble generator 301 is connected with the mixing tank 203 through a first liquid supply pipe 7, and the spraying device 8 is connected with the water tank 201 through a second liquid supply pipe 9. In this embodiment, the dust-removing liquid with foaming effect is added into the liquid storage tank 202, the dust-removing liquid is added into the mixing tank 203 through the liquid inlet pump 204 and the liquid inlet valve 205, when the bubble generator 301 is started, the water in the water tank 201 is added into the mixing tank 203, the water is mixed with the dust-removing liquid, and then the mixed liquid enters into the bubble generator 301 to generate bubbles, and the dust-removing liquid also has dust-removing effect, so that the dust-removing efficiency is further improved. The spraying device 8 is connected to the water tank 201 via the second liquid supply pump 11, and the sprayed mist is water. The consumption of the dedusting liquid can be saved, and the cost is reduced.
Other structures of this embodiment are the same as those of the embodiment, and will not be described here again.
Example five
The present embodiment differs from the fourth embodiment in that the present embodiment further describes the structures of the dust cover 1 and the holder 6 on the basis of the fourth embodiment.
In the present embodiment, the dust cover 1 includes a carrier plate 101 and a cover cylinder 102, the cover cylinder 102 is connected to one side of the carrier plate 101, the bubble jet device 3, the dust concentration sensor 4 are connected to the carrier plate 101 and located in the cover cylinder 102, and the cover cylinder 102 is provided with a plurality of mesh openings.
Further, the cover cylinder 102 has a rectangular structure, and the cover cylinder 102 includes four cover plates, which are detachably connected to the carrier plate respectively. The cover plate can be conveniently installed and detached, so that the maintenance of the bubble spraying device 3, the dust concentration sensor 4 and the spraying device 8 is facilitated.
The support 6 of this embodiment includes a base 601 and a support column 602, the base 601 is connected to one end of the support column 602, the other end of the support column 602 is connected to the dust cover 1, and the liquid storage device 2 is disposed on the base 601. The length of the support posts 602 is greater than the length of the pod 102 such that the support posts 602 have portions that are located inside the pod 102 and portions that are located outside the pod 102. In use, the dust cap 1 covers the outlet of the apparatus for generating coal dust and the support column 602 is located on one side of the apparatus for generating coal dust.
Other structures of this embodiment are the same as those of the fourth embodiment, and will not be described here again.
In summary, the embodiment of the utility model provides a dust removing device for a coal mine, which is provided with a dust cover 1, wherein a bubble injection device 3 and a dust concentration sensor 4 are arranged in the dust cover 1, when the dust removing device is used, the dust cover 1 is covered at the outlet of the device for generating the coal dust, when the dust concentration sensor 4 detects that the concentration of the coal dust in the dust cover 1 reaches a certain value, a control unit 5 controls the bubble injection device 3 to start so as to reduce the dust, the controllability is high, the intelligent degree is high, a liquid storage device 2 supplies liquid to the bubble injection device 3, the bubble injection device 3 generates bubbles to spray, and the bubbles are contacted with the coal dust to promote the coal dust to be settled, so that the dust reducing effect is achieved. The surface area of bubble is big to make the area of contact of bubble and coal dust big, improve the adsorption effect to the coal dust, and then improve sedimentation rate and dust fall efficiency, prevent that the coal dust from escaping and leading to operation environmental pollution, moreover, this embodiment adopts bubble injection apparatus 3's water consumption less, can improve the utilization ratio of water. In addition, the embodiment can adjust the injection speed and the injection force of the bubble injection device 3 according to the concentration of coal dust in the environment by arranging the control unit 5 and the dust concentration sensor 4, so that intelligent dust removal can be realized, and a better dust removal effect is achieved. And the spraying device 8 is also provided for auxiliary action, so that the dust removal effect is further improved.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. The utility model provides a colliery dust fall equipment, its characterized in that, including dust cover (1), stock solution device (2), bubble injection device (3), dust concentration sensor (4) and control unit (5), the one end of dust cover (1) is equipped with into the dirt mouth, bubble injection device (3) with dust concentration sensor (4) are located in dust cover (1), just bubble injection device (3) with it is relative to advance the dirt mouth, stock solution device (2) through support (6) with dust cover (1) are connected, stock solution device (2) through first feed pipe (7) with bubble injection device (3) are connected, control unit (5) set up in on support (6), stock solution device (2), bubble injection device (3) with dust concentration sensor (4) with control unit (5) communication connection.
2. The coal mine dust settling device according to claim 1, wherein the bubble spraying device (3) comprises a bubble generator (301) and a plurality of diversion fans, the bubble generator (301) and the diversion fans are connected with the dust cover (1), the plurality of diversion fans are uniformly arranged around the circumferential interval of the bubble generator (301), the bubble generator (301) is connected with the liquid storage device (2) through the first liquid supply pipe (7), and the bubble generator (301) is in communication connection with the diversion fans and the control unit (5).
3. The coal mine dust settling device according to claim 2, wherein the air bubble spraying device (3) further comprises a mounting shell (302), the mounting shell (302) is connected with the dust cover (1), the mounting shell (302) is provided with a containing cavity and a containing groove, the air bubble generator (301) is arranged in the containing groove, the air guide fan is arranged in the containing cavity, an air outlet (303) communicated with the containing cavity is further formed in the mounting shell (302), and the air outlet (303) and the containing groove are arranged on the same side of the mounting shell (302).
4. A dust fall apparatus as claimed in claim 3, wherein the dust concentration sensor (4) is provided on the mounting housing (302), and the dust concentration sensor (4) and the air outlet (303) are provided on both side walls adjacent to the mounting housing (302).
5. The coal mine dust settling device according to claim 2, further comprising a plurality of spraying devices (8), wherein the spraying devices (8) are connected with the dust cover (1), the spraying devices (8) are uniformly arranged around the circumferential space of the bubble spraying device (3), the spraying devices (8) are connected with the liquid storage device (2) through a second liquid supply pipe (9), and the spraying devices (8) are in communication connection with the control unit (5).
6. The coal mine dust settling device according to claim 5, characterized in that the spraying device (8) comprises a spraying column, the spraying column is connected with the dust cover (1), and a plurality of spraying holes are distributed on the column body of the spraying column.
7. The coal mine dust settling device according to claim 5, wherein the liquid storage device (2) comprises a water tank (201), a liquid storage tank (202), a mixing tank (203), a liquid inlet pump (204) and a liquid inlet valve (205), the water tank (201), the liquid storage tank (202) are respectively connected with the mixing tank (203), the liquid inlet pump (204) and the liquid inlet valve (205) are arranged between the liquid storage tank (202) and the mixing tank (203), the bubble generator (301) is connected with the mixing tank (203) through the first liquid supply pipe (7), and the spraying device (8) is connected with the water tank (201) through the second liquid supply pipe (9).
8. The coal mine dust fall apparatus as claimed in claim 1, wherein the dust cover (1) comprises a bearing plate (101) and a cover cylinder (102), the cover cylinder (102) is connected with one side of the bearing plate (101), the bubble jet device (3), the dust concentration sensor (4) are connected with the bearing plate (101) and are located in the cover cylinder (102), and the cover cylinder (102) is provided with a plurality of meshes.
9. The dust fall apparatus of claim 8, wherein the housing (102) has a rectangular structure, and the housing (102) includes four cover plates, and the four cover plates are detachably connected to the carrier plate (101), respectively.
10. The coal mine dust settling device according to claim 1, characterized in that the support (6) comprises a base (601) and a support column (602), the base (601) is connected to one end of the support column (602), the other end of the support column (602) is connected with the dust cover (1), and the liquid storage device (2) is arranged on the base (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222309764.1U CN219220481U (en) | 2022-08-30 | 2022-08-30 | Colliery dust fall equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222309764.1U CN219220481U (en) | 2022-08-30 | 2022-08-30 | Colliery dust fall equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219220481U true CN219220481U (en) | 2023-06-20 |
Family
ID=86750021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222309764.1U Active CN219220481U (en) | 2022-08-30 | 2022-08-30 | Colliery dust fall equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219220481U (en) |
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2022
- 2022-08-30 CN CN202222309764.1U patent/CN219220481U/en active Active
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