CN108049872B - A kind of surface mine dumping plough dust removal method - Google Patents
A kind of surface mine dumping plough dust removal method Download PDFInfo
- Publication number
- CN108049872B CN108049872B CN201711284586.9A CN201711284586A CN108049872B CN 108049872 B CN108049872 B CN 108049872B CN 201711284586 A CN201711284586 A CN 201711284586A CN 108049872 B CN108049872 B CN 108049872B
- Authority
- CN
- China
- Prior art keywords
- dedusting
- dust removal
- water
- spraying machine
- dumping plough
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/02—Amassing the particles, e.g. by flocculation
Abstract
The invention discloses a kind of surface mine dumping plough dust removal methods, using penetrating mist process of cleaning and by the way of spray dedusting method combines, it is described penetrate mist process of cleaning be discharge arm lower part install dedusting air-assisted type spraying machine, dedusting air-assisted type spraying machine be mounted on discharge arm lower part from 20 meters of discharging point horizontal distance at；Spray dedusting method is to install nozzle in discharge arm head portion, and nozzle is connect with dedusting waterpipe.Present invention employs the modes for penetrating mist dedusting and spraying and dedusting combines to be applied to surface mine dumping plough dust pelletizing system, spraying and dedusting is used for the dedusting of head discharge, the spraying machine of discharge arm lower part is mounted on fixed position, it is spraying apart from relatively fixed and do not need frequently to move because of the movement of discharge arm and set spraying machine to guarantee, this method can play better inhibiting effect to the reentrainment of dust generated after dumping plough blanking, and practice effect is obvious.
Description
Technical field
The present invention relates to dust removal methods when a kind of surface mine dumping plough dust removal method, specially casting machine operation, belong to
In dedusting technology field.
Background technique
The place of Open Pit Mines At Home And Abroad casting at present is more single using dumping plough dust removal method, mainly to expect that mouth spray removes
Based on dirt and discharge arm head portion spraying and dedusting.Its major defect is that water consumption is not easy to control: easily caused when water is more belt deviation,
Skidding and material mouth putty；Fugitive dust is big when water is few, and dust removing effects are poor.
Iron ore adhesive tape row's rock dumping plough hour processing capacity in the village Taiyuan Iron and Steel Co. Yuan Jia reaches 8500-10000t/h, dumping plough discharging
For mobile, open discharge way, discharging drop is big, and occupied area and accumulating amount are big, and material size distribution is broader,
In containing a large amount of easily floated everywhere under the action of the wind by the dust that wind raises cause secondary pollution, to raise dust carry out it is comprehensive
Trapping is a problem.
In view of the above circumstances, a kind of dust removal method of new suitable surface mine large size dumping plough of researching and designing is needed, is subtracted
The few influence of dumping plough discharging point dust and fugitive dust secondary pollution to environment.
Summary of the invention
The present invention is intended to provide a kind of surface mine dumping plough dust removal method, raising of generating in dumping plough discharging process is reduced
Influence of the reentrainment of dust to environment after dirt and blanking inhibits dust to the maximum extent, reduces pollution.
The present invention provides a kind of surface mine dumping plough dust removal methods, are mutually tied using mist process of cleaning is penetrated with spray dedusting method
The mode of conjunction, the mist process of cleaning of penetrating is to install dedusting air-assisted type spraying machine, dedusting air-assisted type spraying machine peace in discharge arm lower part
Mounted in discharge arm lower part from 20 meters of discharging point horizontal distance at, since discharge arm can move up and down, weight bearing area from
At 20 meters of discharging point, it is adapted to fit dedusting air-assisted type spraying machine fixed frame；Spray dedusting method is to install nozzle in discharge arm head portion,
Nozzle is connect with dedusting waterpipe.
Above-mentioned dust removal method the following steps are included:
Dedusting air-assisted type spraying machine is opened when material is transported to dumping plough dump car, sequence are as follows: open pipeline valve-
Dedusting air-assisted type spraying machine fan-unlatching dedusting air-assisted type spraying machine water pump is opened, it is 7-10t/h that water pump, which controls flow,；According to
The difference of discharge belt speed and the variation of material blanking point position, adjustable spraying machine pitch angle.
In the above method, the power of the dedusting air-assisted type spraying machine is 30kW, spraying machine can rotate 0 in the horizontal direction ~
320 °, horizontal maximum range is 60 meters, and pitch angle is -10 ° ~ 40 °, flow 7-10t/h.Further, the dedusting wind
The regulative mode of assisted type spraying machine is remote control adjusting.
The dedusting air-assisted type spraying machine is connect with discharge arm by fixed frame, and the fixed frame is cuboid framework knot
Structure is fixed frame body frame using 160mm channel steel, and main body frame includes four columns, two crossbeams, four bearing diagonal legs；
Fixed frame is connect with discharge arm by four hangers.The height of the column of the fixed frame is 2900mm；The width of crossbeam is
2640mm；The length of bearing diagonal leg is 1000mm；Hanger does main body using 20mm steel plate, and neutral surface is eight pieces, having a size of
500*700mm, bottom plate are four pieces, and having a size of 500*560mm, coupling part is connected to discharge arm bottom with 30*350mm8 root bolt
Portion.
Above-mentioned dumping plough dedusting spraying machine selection ground:
1) 8500 t/h or more of dumping plough hour withdrawal rate；
2) distance (at 20 meters of discharging point) is fixedly mounted in spraying machine, and horizontal range is moderate, and too small, dust removing effects are bad,
Excessive, the bad control of water simultaneously influences refuse dump sedimentation；
3) tailing dam refuse dump spring and autumn measuring wind speed: (wind speed is in 10.8- up to 6 grades or more high wind for highest wind-force
13.8m/s)；320 ° of adjustable spraying machine angles can be rotated horizontally according to wind vector simultaneously,
4) supply of clean circulating water.
The depositing dust principle of spraying machine: the principle increased can be agglomerated and Nian Jie with water using fugitive dust, allows tiny powder
Dirt is interacted by isometrical water droplet, reduces the tension of water surface, condenses dust particles with water mist agglomerating, in gravity
Under, drop to ground.
In the above method, the diameter of the nozzle is 6mm, and the flow of each nozzle is 2.5t/h.
In the above method, dedusting waterpipe connects nozzle, and water in dust removal pipeline-used water is taken at ore dressing clean circulating water, configures 2 45m
3 vertical centrifugal pumps, lift 180m, using a-worker-a-backup way of supplying water, water supply reaches 20t/h platform or more.
Further, the dedusting waterpipe includes supervisor and branch pipe, and water in dust removal supervisor is ∮ 133mm pipeline, from centrifugal pump
Waterpipe to refuse dump is water in dust removal supervisor, a ∮ 50mm water receiving ball valve is being filled close to every 50 meter ampere at dumping plough, convenient for row
The connection of cleaning shaft after native machine is mobile；Water in dust removal branch pipe is ∮ 50mm pipeline, is arranged in parallel with dumping plough discharge arm, water in dust removal
Branch pipe connects water in dust removal supervisor by ball valve.
Beneficial effects of the present invention:
(1) present invention uses dedusting air-assisted type spraying machine, can swing with the variation of discharge arm position, guarantees spraying distance
It is relatively fixed and do not need frequently to move because of the movement of discharge arm and set spraying machine；According to the difference of discharge belt speed, material is fallen
Spraying machine pitch angle is adjusted in the variation of shots position；Simultaneously 320 ° of adjustable spraying machines can be rotated horizontally according to wind vector
Angle, to realize the dust removing effects for inhibiting reentrainment of dust.
(2) present invention installs 4 nozzles in dumping plough discharge arm above-head, and nozzle diameter 6mm sprays effective distance
For 20m, the dust that the arranged material top of dumping plough has been swung can be effectively suppressed.
(3) water in dust removal pipeline laying is in dumping plough ontology, and dumping plough material feeding belt is to discharge skin along the main fortune barrow band of P01
Band, main fortune barrow band water-connecting valve and dumping plough material feeding belt water-connecting valve, discharge arm water-connecting valve and Environmental-protecting dust-removing air-assisted type spraying machine
It is connected between water-connecting valve using hose, it is mobile convenient for dump car and discharge arm.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of casting dust removal device.
Fig. 2 is the schematic diagram for being laid with dedusting waterpipe.
1 is discharge arm in figure, and 2 be dedusting air-assisted type spraying machine, and 3 be discharging point, and 4 be fixed frame, and 5 be pump works, 6 for except
Dirt water supervisor, 7 be water in dust removal branch pipe, and 8 be dumping plough, and 9 be ball valve, and 10 be sealing-tape machine.
Specific embodiment
The present invention is further illustrated below by embodiment, but is not limited to following embodiment.
Embodiment:
As shown in Figure 1 and 2, the present invention is dusted using dumping plough cleaner, a kind of surface mine dumping plough dedusting side
Method, using penetrating mist process of cleaning and by the way of spray dedusting method combines, the mist process of cleaning of penetrating is that installation removes in 1 lower part of discharge arm
Dirt air-assisted type spraying machine 2, dedusting air-assisted type spraying machine 2 are mounted at 20 meters from 3 horizontal distance of discharging point of 1 lower part of discharge arm, by
It can move up and down in discharge arm 1, it is solid to be adapted to fit dedusting air-assisted type spraying machine at from 20 meters of discharging point for weight bearing area
Determine frame 4；Spray dedusting method is to install nozzle 5 on 1 head of discharge arm, and nozzle 5 is connect with dedusting waterpipe.
The structure of casting dust removal device is shown in Fig. 1, and dedusting air-assisted type spraying machine, control are installed in head roller lower part
The fugitive dust of blanking operation processed.
Fig. 2 is the arrangement schematic diagram of dedusting waterpipe, and water in dust removal main pipeline is drawn from plant area's pump works 5, P01 sealing-tape machine 10
Along wire routing water in dust removal pipeline, a water receiving valve is added every 50m.
The present invention is as follows using the operating procedure of dumping plough cleaner:
1, guarantee dumping plough in strip fore head nozzles clear, the flow of each nozzle is 2.5t/h；
2, dedusting air-assisted type spraying machine 1 is opened when material is to dumping plough dump car, sequence are as follows: open pipeline valve
Door-unlatching dedusting air-assisted type spraying machine fan-unlatching dedusting air-assisted type spraying machine water pump, it is 7-10t/h that water pump, which controls flow,；Root
According to the difference of discharge belt speed and the variation of material blanking point position, adjustable spraying machine pitch angle；It simultaneously can be according to wind direction
Change level rotates 320 ° of adjustable spraying machine angles, and regulative mode is remote control adjusting.
In the above method, the power of the dedusting air-assisted type spraying machine 2 is 30kW, spraying machine can rotate 0 in the horizontal direction ~
320 °, horizontal maximum range is 60 meters, and pitch angle is -10 ° ~ 40 °, flow 7-10t/h.Further, the dedusting wind
The regulative mode of assisted type spraying machine is remote control adjusting.
The dedusting air-assisted type spraying machine 2 is connect with discharge arm 1 by fixed frame 4, and the fixed frame 4 is cuboid frame
Frame structure is fixed frame body frame using 160mm channel steel, and main body frame includes four columns, two crossbeams, four bearing diagonals
Leg；Fixed frame is connect with discharge arm by four hangers.The height of the column of the fixed frame is 2900mm；The width of crossbeam is
2640mm；The length of bearing diagonal leg is 1000mm；Hanger does main body using 20mm steel plate, and neutral surface is eight pieces, having a size of
500*700mm, bottom plate are four pieces, and having a size of 500*560mm, coupling part is connected to discharge arm bottom with 30*350mm8 root bolt
Portion.
Above-mentioned dumping plough dedusting spraying machine selection ground:
1) 8500 t/h or more of dumping plough hour withdrawal rate；
2) distance (at 20 meters of discharging point) is fixedly mounted in spraying machine, and horizontal range is moderate, and too small, dust removing effects are bad,
Excessive, the bad control of water simultaneously influences refuse dump sedimentation；
3) tailing dam refuse dump spring and autumn measuring wind speed: (wind speed is in 10.8- up to 6 grades or more high wind for highest wind-force
13.8m/s)；320 ° of adjustable spraying machine angles can be rotated horizontally according to wind vector simultaneously,
4) supply of clean circulating water.
The depositing dust principle of spraying machine: the principle increased can be agglomerated and Nian Jie with water using fugitive dust, allows tiny powder
Dirt is interacted by isometrical water droplet, reduces the tension of water surface, condenses dust particles with water mist agglomerating, in gravity
Under, drop to ground.
In the above method, the diameter of the nozzle is 6mm, and the flow of each nozzle is 2.5t/h.It is parallel in discharge arm side
Dedusting waterpipe is laid, 4 atomizers is added, blanking is drenched, dust suppression is played the role of.
In the above method, dedusting waterpipe connects nozzle, and water in dust removal pipeline-used water is taken at ore dressing clean circulating water, configures 2 45m
3 vertical centrifugal pumps, lift 180m, using a-worker-a-backup way of supplying water, water supply reaches 20t/h platform or more.
Further, the dedusting waterpipe includes supervisor and branch pipe, and water in dust removal supervisor 6 is ∮ 133mm pipeline, from centrifugation
Pumping to the waterpipe of refuse dump is water in dust removal supervisor, is filling a ∮ 50mm water receiving ball valve close to every 50 meter ampere at dumping plough, is being convenient for
The connection of cleaning shaft after dumping plough is mobile；Water in dust removal branch pipe 7 is ∮ 50mm pipeline, is arranged in parallel, removes with dumping plough discharge arm 1
Dirt water branch pipe 7 connects water in dust removal supervisor 6 by ball valve 9.
The a length of 6920m of dedusting waterpipe, wherein the water in dust removal main pipeline from centrifugal pump to refuse dump is managed with ∮ 133mm
Road, a length of 4500m, P01 adhesive tape drive end unit to the end portion ∮ 133mm pipe range be 1500 meters, ∮ 108mm pipe range be 500 meters, ∮ 50mm
Pipe range is 300 meters；Dumping plough discharge arm is arranged in parallel with ∮ 50mm water in dust removal branch pipe, a length of 120m；Prolong every 50 meters of P01 main pipeline
One ∮ 50mm water receiving ball valve is installed, convenient for the connection of dumping plough cleaning shaft after mobile.
Dust removing effects description:
1, it does not come into operation before dust removal installation, when arranging rock amount in 8500t/h or more, Dust Capacity in 3-5 meters of ranges of dumping plough
Measured data is greater than 220mg/m3(national regulation Dust Capacity is greater than 100mg/m3Long working is not allowed for).
2, after having used dust removal installation, Dust Capacity data in dumping plough 3-5 meters of range is surveyed and are down to 50 mg/m3Below；Row
Dust Capacity is 12 mg/m within the scope of 10 meters of native machine3Below；Dust Capacity is 0.8-1.0 mg/m within the scope of 20 meters of dumping plough3 。
Iron ore adhesive tape row's rock dumping plough hour processing capacity in the village Taiyuan Iron and Steel Co. Yuan Jia reaches 8500-10000t/h, dumping plough discharging
For mobile, open discharge way, discharging drop is big, and occupied area and accumulating amount are big, and material size distribution is broader,
In containing a large amount of easily floated everywhere under the action of the wind by the dust that wind raises cause secondary pollution.Invention applies opencuts
After the dumping plough dust removal method of mountain, large surface mine belt conveyor dumping machine is effectively inhibited to generate in transport, discharge process
Problem of environmental pollution caused by dust and reentrainment of dust, dust removing effects are good.
Claims (7)
- It is special using penetrating mist process of cleaning and by the way of spray dedusting method combines 1. a kind of surface mine dumping plough dust removal method Sign is: the mist process of cleaning of penetrating is to install dedusting air-assisted type spraying machine, the installation of dedusting air-assisted type spraying machine in discharge arm lower part At discharge arm lower part is from 20 meters of discharging point horizontal distance；The power of the dedusting air-assisted type spraying machine is 30kW, and spraying machine exists Horizontal direction can rotate 0 ~ 320 °, and horizontal maximum range is 60 meters, and pitch angle is -10 ° ~ 40 °, flow 7-10t/h；Spray Process of cleaning is to install nozzle in discharge arm head portion, and nozzle is connect with dedusting waterpipe；Specifically includes the following steps:Dedusting air-assisted type spraying machine is opened when material is transported to dumping plough dump car, sequence are as follows: open pipeline valve-unlatching Dedusting air-assisted type spraying machine fan-unlatching dedusting air-assisted type spraying machine water pump, it is 7-10t/h that water pump, which controls flow,；According to discharge The difference of belt speed and the variation of material blanking point position, adjustable spraying machine pitch angle.
- 2. surface mine dumping plough dust removal method according to claim 1, it is characterised in that: the dedusting wind spraying aid type is spraying The regulative mode of machine is remote control adjusting.
- 3. surface mine dumping plough dust removal method according to claim 1, it is characterised in that: dedusting air-assisted type spraying machine with Discharge arm is connected by fixed frame, and the fixed frame is cuboid framework structure, is fixed frame body frame using 160mm channel steel Frame, main body frame include four columns, two crossbeams, four bearing diagonal legs；Fixed frame is connect with discharge arm by four hangers.
- 4. surface mine dumping plough dust removal method according to claim 3, it is characterised in that: the column of the fixed frame Height is 2900mm；The width of crossbeam is 2640mm；The length of bearing diagonal leg is 1000mm；Hanger does main body using 20mm steel plate, Its neutral surface is eight pieces, and having a size of 500*700mm, bottom plate is four pieces, having a size of 500*560mm, coupling part 30*350mm8 Root bolt is connected to discharge arm bottom.
- 5. surface mine dumping plough dust removal method according to claim 1, it is characterised in that: the diameter of the nozzle is 6mm, the flow of each nozzle are 2.5t/h.
- 6. surface mine dumping plough dust removal method according to claim 1, it is characterised in that: water in dust removal pipeline-used water source In ore dressing clean circulating water, 2 45m3 vertical centrifugal pumps are configured, lift 180m, using a-worker-a-backup way of supplying water, water supply reaches It is more than 20t/h platform.
- 7. surface mine dumping plough dust removal method according to claim 6, it is characterised in that: the dedusting waterpipe includes Supervisor and branch pipe, water in dust removal supervisor are ∮ 133mm pipeline, are water in dust removal supervisor from centrifugal pump to the waterpipe of refuse dump, close Every 50 meter ampere fills a ∮ 50mm water receiving ball valve at dumping plough, convenient for the connection of dumping plough cleaning shaft after mobile；Water in dust removal branch pipe It for ∮ 50mm pipeline, is arranged in parallel with dumping plough discharge arm, water in dust removal branch pipe connects water in dust removal by ball valve and is responsible for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711284586.9A CN108049872B (en) | 2017-12-07 | 2017-12-07 | A kind of surface mine dumping plough dust removal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711284586.9A CN108049872B (en) | 2017-12-07 | 2017-12-07 | A kind of surface mine dumping plough dust removal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108049872A CN108049872A (en) | 2018-05-18 |
| CN108049872B true CN108049872B (en) | 2019-07-09 |
Family
ID=62122910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711284586.9A Active CN108049872B (en) | 2017-12-07 | 2017-12-07 | A kind of surface mine dumping plough dust removal method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108049872B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569144A (en) * | 2018-12-18 | 2019-04-05 | 招金矿业股份有限公司蚕庄金矿 | A kind of Tailings Dam spray system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0235319A1 (en) * | 1986-02-27 | 1987-09-09 | Bergwerksverband GmbH | Spraying installation for heading machines |
| CN2396179Y (en) * | 1999-10-19 | 2000-09-13 | 兖矿集团有限公司 | High-pressure spray duster for drum coal cutting machine |
| CN202707058U (en) * | 2012-07-16 | 2013-01-30 | 天津赛瑞机器设备有限公司 | Atomizing de-dusting system for heading machine |
| CN102926755A (en) * | 2012-11-16 | 2013-02-13 | 鞍钢集团矿业公司 | Dust-suppression and rock-discharge system utilizing tailing slurry and dust-suppression and rock-discharge method |
| CN103912277A (en) * | 2014-04-01 | 2014-07-09 | 西安科技大学 | High-efficiency dust fall device and method of underground coal mine fully-mechanized excavating tunnel |
| CN203716965U (en) * | 2013-12-30 | 2014-07-16 | 凯盛重工有限公司 | Water system for heading machine |
| CN204619614U (en) * | 2015-01-26 | 2015-09-09 | 方义飞 | For air-assisted type spraying machine and the wind spraying aid type sprayer unit thereof of dedusting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204249098U (en) * | 2014-11-13 | 2015-04-08 | 福建南方路面机械有限公司 | Windrow airborne dust spraying and dust-removing system and comprise the concrete mixing plant of this system |
-
2017
- 2017-12-07 CN CN201711284586.9A patent/CN108049872B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0235319A1 (en) * | 1986-02-27 | 1987-09-09 | Bergwerksverband GmbH | Spraying installation for heading machines |
| CN2396179Y (en) * | 1999-10-19 | 2000-09-13 | 兖矿集团有限公司 | High-pressure spray duster for drum coal cutting machine |
| CN202707058U (en) * | 2012-07-16 | 2013-01-30 | 天津赛瑞机器设备有限公司 | Atomizing de-dusting system for heading machine |
| CN102926755A (en) * | 2012-11-16 | 2013-02-13 | 鞍钢集团矿业公司 | Dust-suppression and rock-discharge system utilizing tailing slurry and dust-suppression and rock-discharge method |
| CN203716965U (en) * | 2013-12-30 | 2014-07-16 | 凯盛重工有限公司 | Water system for heading machine |
| CN103912277A (en) * | 2014-04-01 | 2014-07-09 | 西安科技大学 | High-efficiency dust fall device and method of underground coal mine fully-mechanized excavating tunnel |
| CN204619614U (en) * | 2015-01-26 | 2015-09-09 | 方义飞 | For air-assisted type spraying machine and the wind spraying aid type sprayer unit thereof of dedusting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569144A (en) * | 2018-12-18 | 2019-04-05 | 招金矿业股份有限公司蚕庄金矿 | A kind of Tailings Dam spray system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108049872A (en) | 2018-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102505715B (en) | Slag skimming machine with automatic water mist dust suppression device | |
| CN205966477U (en) | Mining quarrying screening plant | |
| CN204911084U (en) | Spray and press down dirt system for bucket -wheel stacker reclaimer | |
| CN108049872B (en) | A kind of surface mine dumping plough dust removal method | |
| CN210460742U (en) | Tunnel dust three-section multilevel spraying dust settling system | |
| CN204751445U (en) | A spraying dust fall system for landing stage formula coal yard | |
| CN105442488B (en) | A kind of railway tunnel railway roadbed inhales coal car group | |
| RU2536573C1 (en) | Dust killer hopper | |
| CN102718078A (en) | Coal leveling, compaction and dust seal device for fast-loading of train coal | |
| CN108423326A (en) | A kind of anti-blocking device of coal chute | |
| CN203411015U (en) | Belt combination type coal removal device | |
| CN207016015U (en) | A kind of sandstone anti-splashing conveyer | |
| CN101898692B (en) | Environmental-friendly dust suppression dump vehicle | |
| CN206839893U (en) | A kind of sand blasting apparatus | |
| CN202704478U (en) | Water spraying and dust extracting device and coal conveying device using thereof | |
| CN207684385U (en) | A kind of transporting coal apparatus for sweeping belt conveyor | |
| CN208022143U (en) | A kind of anti-blocking control system of coal spout | |
| CN203359257U (en) | Stock bin block removing device | |
| CN108057299A (en) | A kind of bituminous mixing plant dust falling system | |
| CN209973557U (en) | Belt wet dust collector | |
| CN204212798U (en) | For the spraying system of tunnel dedusting | |
| CN209679758U (en) | Materials-taking machine spraying dedusting device | |
| CN217220720U (en) | Spraying dust-settling device for green mine working face extraction | |
| CN208201758U (en) | A kind of mining area sprinkling truck | |
| CN202880508U (en) | Dust suppression and dust falling system for materials with high dust produced when tippler turns over materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |