CN201338868Y - Automatic spray dust removal device - Google Patents
Automatic spray dust removal device Download PDFInfo
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- CN201338868Y CN201338868Y CNU2008202278844U CN200820227884U CN201338868Y CN 201338868 Y CN201338868 Y CN 201338868Y CN U2008202278844 U CNU2008202278844 U CN U2008202278844U CN 200820227884 U CN200820227884 U CN 200820227884U CN 201338868 Y CN201338868 Y CN 201338868Y
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Abstract
The utility model relates to an automatic spray dust removal device, which mainly comprises an electromagnetic valve, a watering device, a gantry, a swing arm touch-control sensing head, a proximity switch and an electrical control device. The automatic spray dust removal device is characterized in that the gantry is mounted on a conveyor frame, the swing arm touch-control sensing head and the proximity switch are mounted on a transverse beam of the gantry, the swing arm touch-control sensing head is arranged above an adhesive tape of a conveyor, the electrical control device is provided with an electric control box and a control circuit, the electric control box is provided with a power indicator light, a coal flow indicator light, a spray indicator light and a universal rotary switch, and the universal rotary switch is provided with an automation position, a stop position and a full automation position. The utility model can detect coal delivery on belts of the conveyor and humidity of the coal, automatically control spray dust removal according to operation and humidity conditions of the coal, and is adaptable to spray dust removal for coal or materials easy to raise dust in drop in coal mines, stations, ports and the like.
Description
One, technical field
The utility model belongs to environmental protection equipment, specifically relates to a kind of auto spraying device for reducing dust that is used for causing behind the conveyor discharging airborne dust.
Two, background technology
In power plant's coal transhipment, the dry coal of coal yard passes through conveyings such as load-transfer device, bucket wheel machine, transfer point, discharger etc., and dry coal causes in transportation and flies upward, and pollutes the space and the equipment of ambient environment and coal handling system, influence equipment safety operation, especially directly influence the healthy of staff.As China Patent No. be: 95200940.4 utility model discloses a kind of material blanking tube exit automatic water jetting device for reducing dust, it comprises load-transfer device, characteristics are to be that sensor pendulum plate is installed in the discharging opening place above the load-transfer device, sensor pendulum plate upper end is that swing arm is connected with bearing chamber, on a side of swing arm, be welded with near plate, be installed on the sensor frame near switch, the line bag on the electromagnetic valve be connected on the circuit near switch series, weld with steelframe between sensor frame and the belt holder.When on the load-transfer device coal being arranged, coal promotes sensor pendulum plate, the pendulum strip moving near the plate swing with near switch near the time near switch conduction, electromagnetic valve is opened, the sprinkler head water spray.This weak point is: it can only detect delivering coal of a service direction of conveyer; The humidity of coal can't detect, even what transport coal yard after raining is wet coal, yet can spray water, and cause the waste of water, and its automatic controlling level is also lower.
Three, summary of the invention
Order of the present utility model is to overcome the above deficiency of the prior art to be improved, provides a kind of and can detect delivering coal and the humidity of coal on the conveyer belt, and according to the operation and the humidity situation automatic guidance atomizing de-dusting apparatus of coal.
The technical solution of the utility model is to achieve these goals:
A kind of auto spraying device for reducing dust comprises electromagnetic valve and the water injecting system of being made up of Upper hose and shower nozzle 1, door frame 2, swing arm type touch-control sensing head 3, near switch 4 and electrical control gear 5; It is characterized in that: described door frame is installed on big 6 of the conveyer, swing arm type touch-control sensing head with all be loaded on the crossbeam of door frame near switch, swing arm type touch-control sensing head is above travelling apron 7, described electrical control gear has electric cabinet and control circuit, described electric cabinet has the indication of power light, coal stream, spraying indication, universal rotary switch, and universal rotary switch is provided with automatically, stops, three positions of full automaticity.
Described swing arm type touch-control sensing head is made up of swing arm 31, fork 32, escapement 33, davit 34, davit bolts and nuts; Described fork 32 is made for steel pipe, described swing arm is fixedly connected on the escapement 33 by fork 32, escapement 33 two ends are by the davit bolts and nuts, and davit is fixed on the crossbeam 201 of door frame 2, on the described crossbeam 201 that also is contained in door frame 2 near switch 4, and corresponding with the opening that is provided with on the escapement 33.
Described escapement 33 is by axle 331, roller 332, bearing seat 333, bearing 334, circlip 335 and seal 336 and form; Bearing is contained on the axle, locate with circlip, and install in the bearing seat, bearing seat is welded on the roller, the bearing seat neck bearing is equipped with sealing outward, two at described axle respectively is provided with a hole that is used to lift 337, and the centre on the described roller is provided with threading opening 338, and is provided with near switch control opening 339.
Describedly be provided with two near switch control opening 339, one is forward opening+α, and another is reverse opening-α; Opening degree α is: α=90 °～110 °.
Described swing arm has two blocks of rubber plates 311, and separately accompanies 312, two blocks of rubber plates of two alloy sheets and alloy sheets is integral by hot-fluidization is bonding between two blocks of rubber plates; By pressing plate 313 and fastening screw screw bolt and nut swing arm and fork 32 are joined then, two alloy sheets are connected to electric wire, and electric wire passes the steel pipe and the escapement of fork and draws.
A kind of auto spraying device for reducing dust of the utility model compared with the prior art, its advantage is:
1, has the monitoring function that has or not coal and coal whether wet on the conveyer belt, spray when that is to say the dried airborne dust of coal, do not spray during the wet not airborne dust of coal, do not spray during no coal on the belt, do not spray during the belt feeder stoppage in transit; The degree of automation height need not manual operation.
2, swing arm type touch-control sensing head is surveyed sensitivity reliably, and Installation and Debugging are convenient.
3, electrical control gear adopts solid-state relay and non-contact relay control, and it is big to have a capacity, and contactless is shockproof, advantages such as waterproof, the work adjustment, safe and reliable, sturdy and durable of can delaying time.
A kind of auto spraying device for reducing dust of the utility model is applicable to the atomizing de-dusting of material under drop of coal or easy airborne dust.
Four, description of drawings
Fig. 1 forms scheme drawing for the utility model.
Fig. 2 is a swing arm type touch-control sensing head structural representation of the present utility model.
Fig. 3 is an escapement front view in the swing arm type touch-control sensing head.
Fig. 4 is an escapement A-A cutaway view in the swing arm type touch-control sensing head.
Fig. 5 is an escapement B-B cutaway view in the swing arm type touch-control sensing head.
Fig. 6 is an escapement C-C cutaway view in the swing arm type touch-control sensing head.
Fig. 7 is an arm side view in the swing arm type touch-control sensing head.
Fig. 8 is a swing arm front view in the swing arm type touch-control sensing head.
Fig. 9 is the utility model electric control theory figure.
Five, the specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing:
Shown in Figure 1, for the utility model is formed scheme drawing.A kind of auto spraying device for reducing dust comprises electromagnetic valve and water injecting system 1, door frame 2, swing arm type touch-control sensing head 3, near switch 4 and electrical control gear 5; On big 6 of the about 3 meters conveyer of described door frame locating distance coal spout inflow point, swing arm type touch-control sensing head with all be loaded on the door frame near switch, swing arm type touch-control sensing head is above travelling apron 7, and adjust to apart from travelling apron 30mm place and be advisable, described atomising installation is made up of Upper hose and shower nozzle, described electromagnetic valve wants level to install, and is installed in the Upper hose.Shower nozzle is installed in the exit of the deflector chute of the front portion of coal spout inflow point and coal spout, generally speaking, and 2-3 shower nozzle of place dress.Electrical control gear is installed on the coal spout inflow point wall or on the wall in exit, electric cabinet has power light, the indication of coal stream, spraying indication, universal rotary switch, universal rotary switch can be got to as required automatically, stops, three positions of full automaticity, and often use will be got to automated location.
Shown in Figure 2, swing arm type touch-control sensing head structural representation of the present utility model.Swing arm type touch-control sensing head is made up of swing arm 31, fork 32, escapement 33, davit 34, davit bolts and nuts etc.Described fork 32 is made for steel pipe, described swing arm is fixedly connected on the escapement 33 by fork 32, the two ends of escapement 33 axis are by the davit bolts and nuts, and davit is fixed on the crossbeam 201 of door frame 2, on the described crossbeam 201 that also is contained in door frame 2 near switch 4, and corresponding with the opening that is provided with on the escapement 33.
Fig. 3 is swing wheel structure scheme drawing in the swing arm type touch-control sensing head to shown in Figure 6.Described escapement 33 is by axle 331, roller 332, bearing seat 333, bearing 334, circlip 335 and seal 336 etc. and form; Bearing is contained on the axle, locate with circlip, and install in the bearing seat, bearing seat is welded on the roller, the bearing seat neck bearing is equipped with sealing outward, two at described axle respectively is provided with a hole that is used to lift 337, and the centre on the described roller 332 is provided with threading opening 338, and is provided with near switch control opening 339; Be provided with two near switch control opening 339, one is forward opening+α, and another is reverse opening-α; Opening degree α is: α=90 °～110 °.Escapement is to use the TD1C1 type standard carrying roller transformation of the way of conveyer to form in the concrete enforcement of the utility model.
Fig. 7 and shown in Figure 8 is swing arm structure scheme drawing in the swing arm type touch-control sensing head.Described swing arm has two blocks of rubber plates 311, and separately accompanies 312, two blocks of rubber plates of two alloy sheets and alloy sheets is integral by hot-fluidization is bonding between two blocks of rubber plates; By pressing plate 313 and fastening screw screw bolt and nut swing arm and fork 32 are joined then, two alloy sheets are connected to electric wire, and pass the threading opening that is provided with on the steel pipe of fork 32 and the escapement and draw.
Shown in Figure 9, be the utility model electric control theory figure.
Described electrical control gear has electric cabinet and control circuit, and control circuit contains power light LD1, coal stream indicator lamp HD1, spraying indicator lamp HD2, voltage transformer T, rectifier Z, near switch S J, solid-state relay G1, G2, G3, relay J B, time relay JS, rotor switch LW, capacitor C 1, C2, C3 and electromagnetic valve D etc.
Described control circuit is powered by single phase A.C. 220v power supply, live wire and zero line power connection indicator lamp LD1, and connection voltage transformer T input end, through voltage transformer T is the 16V direct current (DC), voltage transformer T output connects rectifier Z, the series connection of the positive pole of rectifier Z near the control end points that connects solid-state relay G1 behind the switch S J+, the negative pole of rectifier Z connect the control end points of solid-state relay G1-; One end of relay J B coil connects the live wire of single phase A.C. 220v power supply, the other end of relay J B coil through the contact 1 of universal rotary switch LW with after contact 2 is connected the contact of solid-state relay G1, be connected to the zero line of single phase A.C. 220v power supply again, constitute the detection loop that the belt that detects conveyer has or not coal thus.
The contact 5 of relay J B connects an end a of moisture probe, and contact 7 connects the other end b of moisture probe, the control end points of the contact 3 connection solid-state relay G2 of while relay J B+, the control end points of contact 4 connection solid-state relay G2-; Coal stream indicator lamp HD1 one end connects the live wire of single phase A.C. 220v power supply, the other end is connected to the contact of solid-state relay G1 or the contact 2 of rotor switch LW, and the capacitor C 1 that plays the effect of stable coal stream indicator lamp HD1 voltage, the Humidity Detection loop of coal on the belt of formation detection conveyer thus in parallel.
One end of time relay JS coil is connected the live wire of single phase A.C. 220v power supply behind the contact G21 of the contact 5 of rotor switch LW and contact 6 and solid-state relay G2, the other end of time relay JS coil is connected to the contact of solid-state relay G1 or the contact 2 of rotor switch LW after the contact 1 of rotor switch LW is connected the contact G21 of solid-state relay G1 with contact 2; The control end points of the contact 3 connection solid-state relay G3 of time relay JS+, and the control end points of the contact 4 connection solid-state relay G3 of time relay JS-; The capacitor C 2 that improves time relay JS reagentia is worked at one in parallel of the two ends of relay J S coil, is formed in thus after the humidity of coal on the belt that detects conveyer and can adjusting control time loop.
The contact 7,9 of rotor switch LW connects the live wire of single phase A.C. 220v power supply, the contact 8,10 of rotor switch LW connects the end of electromagnetic valve DCF, and the other end of electromagnetic valve D connects the contact of solid-state relay G1 or the contact 2 of rotor switch LW through the contact of solid-state relay G2 G31; The two ends of electromagnetic valve D spraying indicator lamp HD2 in parallel simultaneously and capacitor C 3, and on the G31 of the contact of solid-state relay G2 the contact 3,4 of rotor switch LW in parallel; Constitute the main control loop of electromagnetic valve D thus.
Rotor switch LW has full automaticity, stops (zero-bit), automatic three positions, and often use will be got to automated location.As shown in table 1, the closure state of three position contacts of rotor switch.
| Full automaticity | Stop (zero-bit) | Automatically |
| 12 | Do not have | 34 |
| 56 | Do not have | 78 |
| 910 | Do not have |
Rotor switch LW beats when the full automaticity shelves: contact 1,2 closures, and contact 5,6 closures, contact 3,4 disconnects;
Rotor switch LW beats when automatic transmission: contact 3,4 closures, and contact 1,2 disconnects, and contact 5,6 disconnects;
Rotor switch LW beat in full automaticity and automatic transmission while: contact 7,8 closures, contact 9,10 closures;
Rotor switch LW beats when stopping (zero-bit): all contacts all disconnect.Often use will be got to automated location.
The utility model principle of work
When on the belt during no coal, the swing arm type touch-control sensing head 3 on the belt feeder of running is sagging, opens circuit near switch with corresponding near switch 4 in the hole on the escapement of swing arm type touch-control sensing head 3, and electromagnetic valve 1 is failure to actuate, and shower nozzle is not sprayed;
When the dry coal charcoal is arranged on the belt, swing arm type touch-control sensing head 3 rotates under the promotion of coal more than or equal to ten degree angles, hole on the escapement of swing arm type touch-control sensing head 3 with near switch 1 dislocation, near switch ways, by the direct current (DC) of about 10mmA to 20mA, the solid-state relay G1 load circuit path of described control circuit, HD1 is bright for coal stream indicator lamp; At this moment, if rotor switch LW beats when automatic transmission: contact 3,4 closures, contact 1,2 disconnects, and contact 5,6 disconnects; Electromagnetic valve starts, and shower nozzle begins spraying, and the indicator lamp HD2 that sprays simultaneously is bright.If rotor switch LW beats when the full automaticity shelves: contact 1,2 closures, contact 5,6 closures, contact 3,4 disconnects; Moisture probe a, b work, the contact 5 of relay J B connects an end a of moisture probe, contact 7 connects the other end b of moisture probe, makes solid-state relay G2 load circuit path, the contact G21 closure of solid-state relay G2, delay time through time relay JS, make solid-state relay G3 load circuit path again, the contact G31 closure of solid-state relay G3, electromagnetic valve starts, shower nozzle begins spraying, and the indicator lamp HD2 that sprays simultaneously is bright.
When on the belt wet coal being arranged, the contact 5 of relay J B connects an end a of moisture probe, contact 7 connects the other end b of moisture probe, and solid-state relay G2 load circuit is opened circuit, and the contact G21 of solid-state relay G2 opens, disconnect through time relay JS, solid-state relay G3 load circuit opens circuit, and the contact G31 of solid-state relay G3 opens, and electromagnetic valve D closes, shower nozzle is not sprayed, and the indicator lamp HD2 that sprays simultaneously goes out.
When the belt feeder on-load was stopped transport, shower nozzle was not sprayed, because fog system general supply and belt feeder interlock.
The use of a kind of auto spraying device for reducing dust of utility model
At first, the working power of engaging means, this device carries out self check, enters normal working.The indicator lamp of this device device is pressed shown in the label, is " power supply indication ", " spraying indication ", " indication of coal stream ", and each indicator lamp is defined as follows:
A) power supply indication: power light is bright during belt feeder work, and power light does not work when quitting work.
B) universal rotary switch is got to " full automaticity " time:
It is bright that spraying (coal humidity is less than 6%) coal flows indication when on the belt dry coal being arranged, and the spraying indication is bright;
The indication of (coal humidity is greater than the 6%) coal of not spraying when on the belt wet coal being arranged stream is bright, and the spraying indication is gone out;
When not spraying during no coal on the belt, the indication of coal stream is gone out, and the spraying indication is gone out;
When belt feeder was stopped transport, the signal indication was all gone out.
C) rotor switch is got to " automatically " time:
Do not monitor dried, the humidity of coal, when belt had coal, the indication of coal stream was bright, and the spraying indication is bright;
During no coal, the indication of coal stream is gone out on the belt, and the spraying indication is gone out;
When belt was stopped transport, the signal indication was gone out entirely.
When d) rotor switch is got to " zero-bit ":
No matter dry coal, wet coal on the belt only show that the indication of coal stream is bright when on the belt coal being arranged;
On the belt during no coal the indication of coal stream go out;
When belt feeder was stopped transport, the signal indication was gone out entirely.
E) user gets to rotor switch according to on-the-spot needs the position at required place.
Claims (6)
1, a kind of auto spraying device for reducing dust comprises electromagnetic valve and the water injecting system of being made up of Upper hose and shower nozzle (1), door frame (2), swing arm type touch-control sensing head (3), near switch (4) and electrical control gear (5); It is characterized in that: described door frame is installed on the conveyer big (6), swing arm type touch-control sensing head with all be loaded on the crossbeam of door frame near switch, swing arm type touch-control sensing head is in travelling apron (7) top, described electrical control gear has electric cabinet and control circuit, described electric cabinet has the indication of power light, coal stream, spraying indication, universal rotary switch, and universal rotary switch is provided with automatically, stops, three positions of full automaticity.
2, a kind of auto spraying device for reducing dust according to claim 1 is characterized in that: described swing arm type touch-control sensing head is made up of swing arm (31), fork (32), escapement (33), davit (34), davit bolts and nuts; Described fork is that steel pipe is made, described swing arm is fixedly connected on the escapement by fork, the escapement two ends are by the davit bolts and nuts, and davit is fixed on the crossbeam (201) of door frame (2), on the described crossbeam (201) that also is contained in door frame near switch (4), and corresponding with the opening that is provided with on the escapement.
3, a kind of auto spraying device for reducing dust according to claim 2 is characterized in that: described escapement (33) is made up of axle (331), roller (332), bearing seat (333), bearing (334), circlip (335) and sealing (336); Bearing is contained on the axle, locate with circlip, and install in the bearing seat, bearing seat is welded on the roller, the bearing seat neck bearing is equipped with sealing outward, two at described axle respectively is provided with a hole that is used to lift (337), and the centre on the described roller is provided with threading opening (338), and is provided with near switch control opening (339).
4, a kind of auto spraying device for reducing dust according to claim 3 is characterized in that: describedly be provided with two near switch control opening (339), one is forward opening+α, and another is reverse opening-α; Opening degree α is: α=90 °～110 °.
5, a kind of auto spraying device for reducing dust according to claim 2, it is characterized in that: described swing arm has two blocks of rubber plates (311), and between two blocks of rubber plates, separately accompanying two alloy sheets (312), two blocks of rubber plates and alloy sheets are integral by hot-fluidization is bonding; By pressing plate (313) and fastening screw screw bolt and nut swing arm and fork (32) are joined then, two alloy sheets are connected to electric wire, and electric wire passes the steel pipe and the escapement of fork and draws.
6, a kind of auto spraying device for reducing dust according to claim 1 is characterized in that: described control circuit contains power light LD1, coal stream indicator lamp HD1, spraying indicator lamp HD2, voltage transformer T, rectifier Z, near switch S J, solid-state relay G1, G2, G3, relay J B, time relay JS, rotor switch LW, capacitor C 1, C2, C3 and electromagnetic valve D;
Described control circuit is powered by single phase A.C. 220v power supply, live wire and zero line power connection indicator lamp LD1, and connection voltage transformer T input end, through voltage transformer T is the 16V direct current (DC), voltage transformer T output connects rectifier Z, the series connection of the positive pole of rectifier Z near the control end points that connects solid-state relay G1 behind the switch S J+, the negative pole of rectifier Z connect the control end points of solid-state relay G1-; One end of relay J B coil connects the live wire of single phase A.C. 220v power supply, the other end of relay J B coil through the contact 1 of universal rotary switch LW with after contact 2 is connected the contact of solid-state relay G1, be connected to the zero line of single phase A.C. 220v power supply again, constitute the detection loop that the belt that detects conveyer has or not coal thus;
The contact 5 of relay J B connects an end a of moisture probe, and contact 7 connects the other end b of moisture probe, the control end points of the contact 3 connection solid-state relay G2 of while relay J B+, the control end points of contact 4 connection solid-state relay G2-; Coal stream indicator lamp HD1 one end connects the live wire of single phase A.C. 220v power supply, the other end is connected to the contact of solid-state relay G1 or the contact 2 of rotor switch LW, and the capacitor C 1 that plays the effect of stable coal stream indicator lamp HD1 voltage, the Humidity Detection loop of coal on the belt of formation detection conveyer thus in parallel;
One end of time relay JS coil is connected the live wire of single phase A.C. 220v power supply behind the contact G21 of the contact 5 of rotor switch LW and contact 6 and solid-state relay G2, the other end of time relay JS coil is connected to the contact of solid-state relay G1 or the contact 2 of rotor switch LW after the contact 1 of rotor switch LW is connected the contact G21 of solid-state relay G1 with contact 2; The control end points of the contact 3 connection solid-state relay G3 of time relay JS+, and the control end points of the contact 4 connection solid-state relay G3 of time relay JS-; The capacitor C 2 that improves time relay JS reagentia is worked at one in parallel of the two ends of relay J S coil, is formed in thus after the humidity of coal on the belt that detects conveyer and can adjusting control time loop;
The contact 7,9 of rotor switch LW connects the live wire of single phase A.C.～220v power supply, the contact 8,10 of rotor switch LW connects the end of electromagnetic valve DCF, and the other end of electromagnetic valve D connects the contact of solid-state relay G1 or the contact 2 of rotor switch LW through the contact of solid-state relay G2 G31; The two ends of electromagnetic valve D spraying indicator lamp HD2 in parallel simultaneously and capacitor C 3, and on the G31 of the contact of solid-state relay G2 the contact 3,4 of rotor switch LW in parallel; Constitute the main control loop of electromagnetic valve D thus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202278844U CN201338868Y (en) | 2008-12-06 | 2008-12-06 | Automatic spray dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202278844U CN201338868Y (en) | 2008-12-06 | 2008-12-06 | Automatic spray dust removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201338868Y true CN201338868Y (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202278844U Expired - Fee Related CN201338868Y (en) | 2008-12-06 | 2008-12-06 | Automatic spray dust removal device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505957A (en) * | 2011-11-23 | 2012-06-20 | 山西潞安华信科技发展有限公司 | Control sensor |
| CN105775795A (en) * | 2016-03-28 | 2016-07-20 | 重庆钢铁(集团)有限责任公司 | Return mine spraying system capable of improving sintering granulation effect |
| CN106115289A (en) * | 2016-08-10 | 2016-11-16 | 郑成恩 | A kind of refuse hopper material-pouring device of track drive |
| CN106351683A (en) * | 2016-08-09 | 2017-01-25 | 鞍钢集团矿业有限公司 | Automatic draw-shaft dust reducing device based on underground extracted ore grade and control method thereof |
| CN111824804A (en) * | 2020-07-14 | 2020-10-27 | 神华天津煤炭码头有限责任公司 | Material conveying mechanism |
| CN116812599A (en) * | 2023-05-31 | 2023-09-29 | 山东交通学院 | Conveyer belt with dust fall function for coal mine |
-
2008
- 2008-12-06 CN CNU2008202278844U patent/CN201338868Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505957A (en) * | 2011-11-23 | 2012-06-20 | 山西潞安华信科技发展有限公司 | Control sensor |
| CN105775795A (en) * | 2016-03-28 | 2016-07-20 | 重庆钢铁(集团)有限责任公司 | Return mine spraying system capable of improving sintering granulation effect |
| CN105775795B (en) * | 2016-03-28 | 2017-10-31 | 重庆钢铁(集团)有限责任公司 | A kind of spray system of returning mine for lifting sintering granulating effect |
| CN106351683A (en) * | 2016-08-09 | 2017-01-25 | 鞍钢集团矿业有限公司 | Automatic draw-shaft dust reducing device based on underground extracted ore grade and control method thereof |
| CN106351683B (en) * | 2016-08-09 | 2019-03-29 | 鞍钢集团矿业有限公司 | Drop shaft automatic dustfall device and its control method based on underground extracted ore grade |
| CN106115289A (en) * | 2016-08-10 | 2016-11-16 | 郑成恩 | A kind of refuse hopper material-pouring device of track drive |
| CN111824804A (en) * | 2020-07-14 | 2020-10-27 | 神华天津煤炭码头有限责任公司 | Material conveying mechanism |
| CN116812599A (en) * | 2023-05-31 | 2023-09-29 | 山东交通学院 | Conveyer belt with dust fall function for coal mine |
| CN116812599B (en) * | 2023-05-31 | 2023-11-14 | 山东交通学院 | Conveyer belt with dust fall function for coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20121206 |