CN113958360A - Mining is with spraying dust device - Google Patents
Mining is with spraying dust device Download PDFInfo
- Publication number
- CN113958360A CN113958360A CN202111387432.9A CN202111387432A CN113958360A CN 113958360 A CN113958360 A CN 113958360A CN 202111387432 A CN202111387432 A CN 202111387432A CN 113958360 A CN113958360 A CN 113958360A
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- fixed
- water pipe
- converter
- upside
- downside
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- 239000000428 dust Substances 0.000 title claims abstract description 41
- 238000005507 spraying Methods 0.000 title claims abstract description 31
- 238000005065 mining Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 126
- 239000007921 spray Substances 0.000 claims description 30
- 230000008676 import Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011012 sanitization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Nozzles (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention belongs to the field of mine field dust removal, and relates to a spraying dust-settling device for mining. The invention changes the speed of water flow by converting water pipes with different diameters, thereby changing the spraying speed, flexibly controlling the flow speed of water in the process of spraying and dust falling, reasonably controlling the spraying speed of spraying, thereby having better dust falling effect.
Description
Technical Field
The invention belongs to the field of mine field dust removal, and particularly relates to a spraying dust-settling device for mining.
Background
As is known, spray dust settling is a novel dust settling technology, and the principle of the spray dust settling is that particles generated by spraying are extremely fine, and the surface tension is basically zero, so that dust particles with various sizes in the air can be quickly adsorbed when the spray dust settling is sprayed to the air, and effective dust control is formed. Has good effect on large-scale dust control and dust fall in a wide range. At the same time, the effect is a completely atomization effect, and water drops and moisture are never generated. When the mine operation, because semi-sealed mine can produce a large amount of dusts, has caused great harm to operation personnel's healthy, and current dust device has some defects:
1. the spraying range is limited, and the spraying range cannot be enlarged or reduced;
2. the water flow speed during spraying is inconvenient, and the spraying speed cannot be reasonably changed according to actual conditions;
3. when the shower nozzle is blockked up, dust fall work can only stop, just can continue work with blockking up the problem solution, and efficiency is too low like this, waste time moreover.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a mining spraying dust-settling device which can change the speed of water flow, increase the spraying range and automatically clear blockage.
The purpose of the invention can be realized by the following technical scheme: the utility model provides a mining is with spraying dust device, includes the casing, the fixed delivery port that is equipped with of casing downside, the fixed shower nozzle that is equipped with of delivery port downside, the fixed water inlet that is equipped with of casing upside, the fixed air intake that is equipped with of casing upside, the casing left and right sides is fixed the roating seat, every respectively the roating seat outside is rotated and is equipped with the bulb.
Preferably, every the fixed bulb post that is equipped with in the bulb outside, every the fixed backup pad that is equipped with in the bulb post outside, the fixed plate that is equipped with of backup pad upside, the fixed first motor that is equipped with of fixed plate downside, first motor downside output is equipped with first motor shaft, the fixed first carousel that is equipped with of first motor shaft downside, the fixed connecting rod that is equipped with in first carousel left side, the fixed first telescopic link that is equipped with of connecting rod downside, the fixed second telescopic link that is equipped with of first telescopic link downside, the second telescopic link with water inlet fixed connection.
Preferably, be equipped with the working chamber in the casing, the fixed import water pipe that is equipped with of working chamber upside, the fixed first converter that is equipped with of import water pipe downside, the fixed export water pipe that is equipped with of working chamber downside, the fixed second converter that is equipped with of export water pipe upside, the fixed water pump seat that is equipped with in working chamber left side, the fixed water pump that is equipped with of water pump seat upside, the fixed intake pipe that is equipped with of water pump upside, the intake pipe with air intake fixed connection, the air intake inboard is fixed with the filter, the fixed gas-supply pipe that is equipped with in water pump right side, the gas-supply pipe with shower nozzle fixed connection.
Preferably, a second motor is fixedly arranged on the right side of the working cavity, a second motor shaft is fixedly arranged on the upper side of the second motor, a second motor shaft is arranged at the output end of the upper side of the second motor shaft, a second rotary disc is fixedly arranged on the upper side of the second motor shaft, a first support rod is fixedly arranged on the left side of the second rotary disc, a first water pipe is fixedly arranged on the left side of the first support rod, the upper side of the first water pipe is in sliding connection with the first converter, the first water pipe is communicated with the second converter, a second support rod is fixedly arranged on the rear side of the second rotary disc, a second water pipe is fixedly arranged on the rear side of the second support rod, the upper side of the second water pipe is in sliding connection with the first converter, and the second water pipe is communicated with the first converter, the lower side of the second water pipe is connected with the second converter in a sliding mode, and the second water pipe is communicated with the second converter.
Preferably, a third supporting rod is fixedly arranged on the front side of the second turntable, a third water pipe is fixedly arranged on the front side of the third supporting rod, the upper side of the third water pipe is in sliding connection with the first converter, the third water pipe is communicated with the first converter, the lower side of the third water pipe is in sliding connection with the second converter, and the third water pipe is communicated with the second converter.
Preferably, be equipped with a plurality of spray grooves in the shower nozzle, every spray the groove all with the gas-supply pipe communicates with each other, every spray the groove all with export water pipe communicates with each other every spray the groove rear side and be equipped with the clearance chamber, every the fixed pneumatic cylinder that is equipped with of clearance chamber rear side, every the pneumatic cylinder front side slides and is equipped with the hydraulic stem, every the fixed third telescopic link that is equipped with of hydraulic stem front side, every the fixed clean piston that is equipped with of third telescopic link downside.
Water gets into from the water inlet, then in flowing into the import water pipe, start the second motor this moment, thereby it is rotatory to make the second motor drive the second motor shaft, thereby it is rotatory to make the second carousel, thereby it drives the second water pipe, first water pipe, the third water pipe is rotatory, change the water pipe of different thicknesses with this, thereby select different water pipes according to specific needs, the water pipe through changing different thicknesses changes the cross-sectional area of rivers like this, thereby change the speed of rivers, with the speed of the control dust fall that once can be nimble, improve the effect of dust fall.
At the moment, water enters the outlet water pipe and then enters the spray head, the water pump is started, so that outside air enters from the air inlet, and because the air in the mine hole contains a large amount of impurities, therefore, the filter can filter the impurities in the air to avoid blocking the pipeline and damaging the equipment, at the moment, the air enters the spray head through the air pipe and collides with the spray head, so as to impact the water into fine particles to be sprayed out of the spraying groove, and then the first motor is started, so that the first motor drives the first motor shaft to rotate, thereby driving the first turntable to rotate, and further driving the connecting rod to rotate, because the second telescopic rod and the first telescopic rod can be extended and contracted, the shell can rotate around the ball head, thereby make the shower nozzle can rotate all around, can effectually increase the area that sprays like this for the efficiency greatly increased of dust fall, the water resource of also practicing thrift simultaneously.
Because ore deposit hole the inside dust is more, when spraying the inslot and being plugged up, start the pneumatic cylinder this moment, thereby make the hydraulic stem slide forward, thereby it slides forward to drive the third telescopic link, thereby it slides earlier to drive clean piston, when clean piston slides in spraying the inslot, the third telescopic link will stretch out and draw back from top to bottom this moment, thereby it slides from top to bottom to drive clean piston, thereby will spray the dust sanitization of inslot, like this can effectual solution shower nozzle jam problem, avoided influencing the effect of dust fall because of blockking up, the efficiency of work is improved.
Compared with the prior art, this mining is with spraying dust device has following advantage:
1. the cross-sectional area of rivers is changed through the water pipe of changing different thicknesses to change the speed of rivers, with the speed of the control dust fall that once can be nimble, improve the effect of dust fall.
2. Can effectually increase the area that sprays for the efficiency greatly increased of dust fall, the water resource of also practicing thrift simultaneously.
3. Can effectually solve the shower nozzle and block up the problem, avoid influencing the effect of dust fall because of blockking up, improve the efficiency of work.
Drawings
Fig. 1 is a schematic structural diagram of a spray dust-settling device for mining.
Fig. 2 is a front view of the spray dust settling device for mining.
Fig. 3 is a sectional view taken along a-a in fig. 2.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Fig. 5 is a sectional view taken along line C-C in fig. 3.
Fig. 6 is a sectional view taken along line D-D in fig. 3.
Fig. 7 is an enlarged view of the structure at F in fig. 5.
In the figure, 10, the housing; 11. a water outlet; 12. a spray head; 13. a water inlet; 14. a rotating base; 15. a ball head; 16. a ball head column; 17. a support plate; 18. a fixing plate; 19. a first motor; 20. a first motor shaft; 21. a first turntable; 22. a connecting rod; 23. a first telescopic rod; 24. a second telescopic rod; 25. an air inlet; 26. an inlet water pipe; 27. a working chamber; 28. a second water pipe; 29. a first water pipe; 30. a third water pipe; 31. a spraying tank; 32. a first converter; 33. an outlet water pipe; 34. a second motor mount; 35. a second motor; 36. a second motor shaft; 37. a second turntable; 38. a water pump base; 39. a water pump; 40. an air inlet pipe; 41. a gas delivery pipe; 42. a filter; 43. a second converter; 44. cleaning the cavity; 45. a hydraulic cylinder; 46. a hydraulic lever; 47. a third telescopic rod; 48. cleaning the piston; 49. a third support bar; 50. a second support bar; 51. a first support bar.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a spraying dust-settling device for mining comprises a shell 10, a water outlet 11 is fixedly arranged on the lower side of the shell 10, a spray head 12 is fixedly arranged on the lower side of the water outlet 11, a water inlet 13 is fixedly arranged on the upper side of the shell 10, an air inlet 25 is fixedly arranged on the upper side of the shell 10, rotating seats 14 are respectively fixedly arranged on the left side and the right side of the shell 10, and a ball head 15 is rotatably arranged on the outer side of each rotating seat 14.
As shown in fig. 1, a bulb column 16 is fixedly arranged on the outer side of each bulb 15, a supporting plate 17 is fixedly arranged on the outer side of each bulb column 16, a fixing plate 18 is fixedly arranged on the upper side of the supporting plate 17, a first motor 19 is fixedly arranged on the lower side of the fixing plate 18, a first motor shaft 20 is arranged at the lower side output end of the first motor 19, a first rotating plate 21 is fixedly arranged on the lower side of the first motor shaft 20, a connecting rod 22 is fixedly arranged on the left side of the first rotating plate 21, a first telescopic rod 23 is fixedly arranged on the lower side of the connecting rod 22, a second telescopic rod 24 is fixedly arranged on the lower side of the first telescopic rod 23, and the second telescopic rod 24 is fixedly connected with the water inlet 13.
As shown in fig. 4, a working chamber 27 is provided in the casing 10, an inlet water pipe 26 is fixedly provided on the upper side of the working chamber 27, a first converter 32 is fixedly provided on the lower side of the inlet water pipe 26, an outlet water pipe 33 is fixedly provided on the lower side of the working chamber 27, a second converter 43 is fixedly provided on the upper side of the outlet water pipe 33, a water pump seat 38 is fixedly provided on the left side of the working chamber 27, a water pump 39 is fixedly provided on the upper side of the water pump seat 38, an air inlet pipe 40 is fixedly provided on the upper side of the water pump 39, the air inlet pipe 40 is fixedly connected with the air inlet 25, a filter 42 is fixedly provided on the inner side of the air inlet 25, an air pipe 41 is fixedly provided on the right side of the water pump 39, and the air pipe 41 is fixedly connected with the nozzle 12.
As shown in fig. 3, 4 and 6, a second motor 35 is fixedly arranged on the right side of the working chamber 27, a second motor shaft 36 is fixedly arranged on the upper side of the second motor 35, a second motor shaft 36 is arranged at the output end of the upper side of the second motor shaft 36, a second rotating disc 37 is fixedly arranged on the upper side of the second motor shaft 36, a first support rod 51 is fixedly arranged on the left side of the second rotating disc 37, a first water pipe 29 is fixedly arranged on the left side of the first support rod 51, the upper side of the first water pipe 29 is slidably connected with a first converter 32, the first water pipe 29 is slidably connected with a second converter 43, the first water pipe 29 is communicated with the second converter 43, a second support rod 50 is fixedly arranged on the rear side of the second rotating disc 37, a second water pipe 28 is fixedly arranged on the rear side of the second support rod 50, the upper side of the second water pipe 28 is slidably connected with the first converter 32, the second water pipe 28 is communicated with the first converter 32, the lower side of the second water pipe 28 is slidably connected with the second converter 43, the second water pipe 28 communicates with the second converter 43.
As shown in fig. 2, 4 and 6, a third support rod 49 is fixedly arranged on the front side of the second rotary table 37, a third water pipe 30 is fixedly arranged on the front side of the third support rod 49, the upper side of the third water pipe 30 is slidably connected with the first converter 32, the third water pipe 30 is communicated with the first converter 32, the lower side of the third water pipe 30 is slidably connected with the second converter 43, and the third water pipe 30 is communicated with the second converter 43.
As shown in fig. 5 and 7, a plurality of spraying grooves 31 are provided in the nozzle 12, each spraying groove 31 is communicated with the gas pipe 41, each spraying groove 31 is communicated with the outlet water pipe 33, a cleaning cavity 44 is provided at the rear side of each spraying groove 31, a hydraulic cylinder 45 is fixedly provided at the rear side of each cleaning cavity 44, a hydraulic rod 46 is slidably provided at the front side of each hydraulic cylinder 45, a third telescopic rod 47 is fixedly provided at the front side of each hydraulic rod 46, and a cleaning piston 48 is fixedly provided at the lower side of each third telescopic rod 47.
Water gets into from water inlet 13, then flow into in the import water pipe 26, start second motor 35 this moment, thereby it is rotatory to make second motor 35 drive second motor shaft 36, thereby make second carousel 37 rotatory, thereby drive second water pipe 28, first water pipe 29, third water pipe 30 is rotatory, change the water pipe of different thicknesses with this, thereby select different water pipes according to specific needs, the water pipe through changing different thicknesses changes the cross-sectional area of rivers like this, thereby change the speed of rivers, with the speed of the control dust fall that once can be nimble, improve the effect of dust fall.
At this moment, water enters the outlet water pipe 33 and enters the spray head 12, at this moment, the water pump 39 is started, so that outside air enters from the air inlet 25, the air in the mine hole contains a large amount of impurities, so that the impurities in the air can be filtered by the filter 42, the pipeline blockage and equipment damage are avoided, at this moment, the air enters the spray head 12 through the air conveying pipe 41 and collides with the water, so that the water is impacted into fine particles and is sprayed out of the spraying groove 31, at this moment, the first motor 19 is started, so that the first motor 19 drives the first motor shaft 20 to rotate, so that the first rotary disc 21 is driven to rotate, so that the connecting rod 22 is driven to rotate, and as the second telescopic rod 24 and the first telescopic rod 23 can be telescopic, the shell 10 rotates around the ball head 15, so that the spray head 12 can rotate front and back and left and right, so that the spraying area can be effectively increased, the efficiency of dust fall is greatly increased, and meanwhile, water resources are saved.
Because ore deposit hole the inside dust is more, when spraying groove 31 and being plugged up, start hydraulic cylinder 45 this moment, thereby make hydraulic stem 46 slide forward, thereby it slides forward to drive third telescopic link 47, thereby it slides forward to drive clean piston 48, when clean piston 48 slides in spraying groove 31, third telescopic link 47 will stretch out and draw back from top to bottom this moment, thereby it slides from top to bottom to drive clean piston 48, thereby the dust clean up that will spray in the groove 31, like this can effectual solution shower nozzle jam problem, the effect of dust fall has been avoided influencing because of blockking up, the efficiency of work has been improved.
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 (6)
1. The utility model provides a mining is with spraying dust device, includes casing (10), its characterized in that, casing (10) downside is fixed and is equipped with delivery port (11), fixed shower nozzle (12) that is equipped with of delivery port (11) downside, casing (10) upside is fixed and is equipped with water inlet (13), casing (10) upside is fixed and is equipped with air intake (25), casing (10) left and right sides is fixed roating seat (14), every roating seat (14) outside is rotated and is equipped with bulb (15).
2. The spray dust settling device for mining of claim 1, characterized in that: every fixed bulb post (16) that is equipped with in bulb (15) outside, every fixed backup pad (17) that is equipped with in bulb post (16) outside, fixed plate (18) that is equipped with of backup pad (17) upside, fixed plate (18) downside is fixed and is equipped with first motor (19), first motor (19) downside output is equipped with first motor shaft (20), fixed first carousel (21) that is equipped with of first motor shaft (20) downside, fixed connecting rod (22) that is equipped with in first carousel (21) left side, fixed first telescopic link (23) that is equipped with of connecting rod (22) downside, fixed second telescopic link (24) that is equipped with of first telescopic link (23) downside, second telescopic link (24) with water inlet (13) fixed connection.
3. The spray dust settling device for mining of claim 2, characterized in that: be equipped with working chamber (27) in casing (10), working chamber (27) upside is fixed and is equipped with import water pipe (26), import water pipe (26) downside is fixed and is equipped with first converter (32), working chamber (27) downside is fixed and is equipped with export water pipe (33), export water pipe (33) upside is fixed and is equipped with second converter (43), working chamber (27) left side is fixed and is equipped with water pump seat (38), water pump seat (38) upside is fixed and is equipped with water pump (39), water pump (39) upside is fixed and is equipped with intake pipe (40), intake pipe (40) with air intake (25) fixed connection, air intake (25) inboard is fixed with filter (42), water pump (39) right side is fixed and is equipped with air pipe (41), air pipe (41) with shower nozzle (12) fixed connection.
4. The spray dust settling device for mining of claim 3, characterized in that: the right side of the working cavity (27) is fixedly provided with a second motor (35), the upside of the second motor (35) is fixedly provided with a second motor shaft (36), the upside output end of the second motor shaft (36) is provided with the second motor shaft (36), the upside of the second motor shaft (36) is fixedly provided with a second turntable (37), the left side of the second turntable (37) is fixedly provided with a first supporting rod (51), the left side of the first supporting rod (51) is fixedly provided with a first water pipe (29), the upside of the first water pipe (29) is in sliding connection with the first converter (32), the first water pipe (29) is communicated with the first converter (32), the lower side of the first water pipe (29) is in sliding connection with the second converter (43), the first water pipe (29) is communicated with the second converter (43), the rear side of the second turntable (37) is fixedly provided with a second supporting rod (50), a second water pipe (28) is fixed on the rear side of the second support rod (50), the upper side of the second water pipe (28) is in sliding connection with the first converter (32), the second water pipe (28) is communicated with the first converter (32), the lower side of the second water pipe (28) is in sliding connection with the second converter (43), and the second water pipe (28) is communicated with the second converter (43).
5. The spray dust settling device for mining of claim 4, characterized in that: second carousel (37) front side is fixed and is equipped with third bracing piece (49), third bracing piece (49) front side is fixed with third water pipe (30), third water pipe (30) upside with first converter (32) sliding connection, third water pipe (30) with first converter (32) communicate with each other, third water pipe (30) downside with second converter (43) sliding connection, third water pipe (30) with second converter (43) communicate with each other.
6. The spray dust settling device for mining of claim 5, characterized in that: be equipped with a plurality of spray groove (31) in shower nozzle (12), every spray groove (31) all with gas-supply pipe (41) communicate with each other, every spray groove (31) all with export water pipe (33) communicate with each other every spray groove (31) rear side is equipped with clearance chamber (44), every clearance chamber (44) rear side is fixed and is equipped with pneumatic cylinder (45), every pneumatic cylinder (45) front side slides and is equipped with hydraulic stem (46), every hydraulic stem (46) front side is fixed and is equipped with third telescopic link (47), every third telescopic link (47) downside is fixed and is equipped with clean piston (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387432.9A CN113958360A (en) | 2021-11-22 | 2021-11-22 | Mining is with spraying dust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387432.9A CN113958360A (en) | 2021-11-22 | 2021-11-22 | Mining is with spraying dust device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113958360A true CN113958360A (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111387432.9A Pending CN113958360A (en) | 2021-11-22 | 2021-11-22 | Mining is with spraying dust device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113958360A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130142260A (en) * | 2012-06-19 | 2013-12-30 | 김영목 | Water spray apparatus for scattering dust |
| CN207222203U (en) * | 2017-09-04 | 2018-04-13 | 上海长赋机械科技有限公司 | One kind penetrates mist dust falling device |
| CN209174178U (en) * | 2018-09-21 | 2019-07-30 | 山东亚特美环境科技有限公司 | A kind of self-cleaning nozzle |
| CN111203061A (en) * | 2020-02-21 | 2020-05-29 | 赵永 | Dust settling fixing device and dust settling method for concrete strength detection |
| CN113426229A (en) * | 2021-06-16 | 2021-09-24 | 浙江交投丽新矿业有限公司 | Mining spraying dust device |
| CN214434603U (en) * | 2020-11-16 | 2021-10-22 | 普定县人民医院 | Injection apparatus for department of stomatology |
-
2021
- 2021-11-22 CN CN202111387432.9A patent/CN113958360A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130142260A (en) * | 2012-06-19 | 2013-12-30 | 김영목 | Water spray apparatus for scattering dust |
| CN207222203U (en) * | 2017-09-04 | 2018-04-13 | 上海长赋机械科技有限公司 | One kind penetrates mist dust falling device |
| CN209174178U (en) * | 2018-09-21 | 2019-07-30 | 山东亚特美环境科技有限公司 | A kind of self-cleaning nozzle |
| CN111203061A (en) * | 2020-02-21 | 2020-05-29 | 赵永 | Dust settling fixing device and dust settling method for concrete strength detection |
| CN214434603U (en) * | 2020-11-16 | 2021-10-22 | 普定县人民医院 | Injection apparatus for department of stomatology |
| CN113426229A (en) * | 2021-06-16 | 2021-09-24 | 浙江交投丽新矿业有限公司 | Mining spraying dust device |
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