CN214811839U - Instant stirring and spraying device for dust suppressant in railway coal transportation - Google Patents
Instant stirring and spraying device for dust suppressant in railway coal transportation Download PDFInfo
- Publication number
- CN214811839U CN214811839U CN202022527288.1U CN202022527288U CN214811839U CN 214811839 U CN214811839 U CN 214811839U CN 202022527288 U CN202022527288 U CN 202022527288U CN 214811839 U CN214811839 U CN 214811839U
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- Prior art keywords
- stirring
- dust suppressant
- instant
- powder
- spraying
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- Expired - Fee Related
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- 238000003756 stirring Methods 0.000 title claims abstract description 88
- 238000005507 spraying Methods 0.000 title claims abstract description 60
- 239000000428 dust Substances 0.000 title claims abstract description 54
- 239000003245 coal Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 49
- 239000007921 spray Substances 0.000 claims abstract description 15
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 6
- 239000002817 coal dust Substances 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a railway coal transportation presses down instant stirring sprinkler of dirt agent, including instant agitating unit and sprinkler, wherein: the instant stirring device is used for instantly stirring the water and the powder and transmitting the water and the powder to the spraying device; and the spraying device is connected with the instant stirring device and used for receiving the dust suppressant transmitted by the instant stirring device and spraying the dust suppressant to a specified position. Compared with the prior art, the utility model discloses utilize first electromagnetic flow valve, weighing module, screw conveyer to mix water and powder according to setting for the proportion, realize the automatic blending of solution. The device mixes the powder and water back through a plurality of stirring vane of installation in the primary mixing device, can realize the stirring when rivers flow in the pipeline, later stirs solution once more through establishing ties the homogeneity pump, reaches and sprays required concentration. Through this kind of mode, save traditional storage agitator tank, need not the storage, spray while stirring realizes spraying immediately.
Description
Technical Field
The utility model relates to a stirring of dust suppressant sprays application technical field, especially relates to a direct injection formula railway coal transportation dust suppressant stirs sprinkler immediately.
Background
In recent years, in the transportation process of coal, due to wind force and other reasons, coal dust can be lost along with wind, so that a large amount of resources are wasted, and the coal dust can be attached to buildings, civil facilities and crops after being thrown, so that the ecological environment of a railway line is damaged. Therefore, the coal dust suppressant is required to be sprayed on the surface of the coal when the coal is transported.
The existing railway coal transportation dust suppressant spraying equipment has complex operation procedures, liquid preparation is required to be carried out in advance for storage during use, a pre-dissolving machine and a stirring tank are required to be used during dissolving, and powder and water are required to be poured into a storage stirring tank in the traditional technology and can be sprayed for use after being fully stirred. The stirring preparation is needed before spraying, a large amount of time is consumed, after the spraying device is used every time, redundant stirred solution in a storage stirring tank is often not used for a plurality of days, unnecessary waste is caused, and the prepared dust suppressant solution is easy to decay and lose efficacy in summer, needs to be kept warm in winter, needs to be frequently checked during storage, is very inconvenient, and therefore the problem that the dust suppressant cannot be conveniently stirred and sprayed exists.
Disclosure of Invention
Therefore, the utility model provides an instant sprinkler that stirs of railway coal transportation dust suppressant for can not stir the problem of spraying to dust suppressant conveniently among the overcome prior art.
The utility model provides an instant stirring sprinkler of railway coal transportation dust suppressant, includes instant agitating unit and sprinkler, wherein:
the instant stirring device is used for instantly stirring the water and the powder and transmitting the water and the powder to the spraying device;
and the spraying device is connected with the instant stirring device and used for receiving the dust suppressant transmitted by the instant stirring device and spraying the dust suppressant to a specified position.
Further, the instant stirring apparatus includes:
a powder bin disposed on the apparatus for receiving and storing powder for delivery to the screw conveyor;
the screw conveyer is arranged at the bottom of the powder bin and used for receiving the powder conveyed by the powder bin and conveying the powder to the stirring device;
one side of the first homogenizing pump is connected with the stirring device, and the other side of the first homogenizing pump is connected with the second homogenizing pump and used for stirring the dust suppressant treated by the stirring device;
the first electromagnetic flow valve is arranged on the device and used for acquiring information of the specified water quantity passing through the first electromagnetic flow valve and correspondingly adjusting the water quantity according to the information;
the stirring device is arranged on the device and used for receiving the powder transmitted by the screw conveyer and the water flow regulated by the first electromagnetic flow valve and stirring the powder and the water flow;
the second homogenizing pump is connected with the first homogenizing pump and is used for receiving the dust suppressant treated by the first homogenizing pump, stirring again and transmitting the dust suppressant to the plunger water pump;
the plunger water pump is connected with the second homogenizing pump and is used for transmitting the dust suppressant transmitted by the second homogenizing pump to the second electromagnetic flow valve;
and the second electromagnetic flow valve is connected with the plunger water pump and is used for transmitting the dust suppressant transmitted by the plunger water pump to the interface of the spraying device.
Further, the instant stirring device further comprises a water inlet and a spraying device interface.
Further, the spraying device comprises:
the inner part of the upright post is provided with a lifting mechanism and is connected with the connecting seat so as to protect and bear a designated part;
the connecting seat is arranged at the top of the upright post and connected with the liquid spraying rod so as to protect and bear a designated part;
the feeding pipe is arranged on one side of the upright post and/or the connecting seat and is used for transporting the dust suppressant transmitted by the instant stirring device to the liquid spraying rod through the spraying device interface;
and the liquid spraying rod is connected with the rotating rod and is used for spraying the dust suppressant within a specified range according to the rotation of the rotating rod.
Further, its characterized in that, the connecting seat includes:
the first motor is arranged inside the connecting seat and used for driving the first motor to rotate the rotating rod;
and the rotating rod is positioned at the output end of the second motor and penetrates through the liquid spraying rod, and is used for driving the liquid spraying rod to rotate correspondingly through appointed rotation.
Further, the pillar includes:
the limiting rod is arranged in the lifting mechanism and used for moving the specified part in the lifting mechanism through the limiting plate;
the limiting plate is arranged at the bottom of the movable column, is connected with the limiting rod and is used for enabling the limiting plate to move in a lifting mechanism in a lifting mode;
and the movable column is arranged at the top of the limiting plate, is connected with the connecting pipe and is used for lifting and moving along the bearing so as to drive the connecting seat to lift and move.
The bearing penetrates through the top end of the upright column, is sleeved outside the connecting pipe and is used for pushing the connecting seat to lift and move;
the connecting pipe is sleeved outside the movable column and used for connecting the movable column and the bearing;
the second motor is fixedly arranged on the outer side wall of the upright post and used for driving the second motor to rotate the first bevel gear and the rotating shaft so as to drive other components;
the first bevel gear is sleeved outside the connecting pipe and positioned at the lower end of the bearing, and is used for driving other parts to rotate in a specified manner through the second bevel gear;
the rotating shaft penetrates through the side wall of the upright column, is connected with the output end of the second motor and is used for driving other parts to rotate in an appointed way through the second motor;
and the second bevel gear is sleeved on one side of the rotating shaft and vertically meshed with the first bevel gear so as to drive other parts to rotate in a specified manner through the rotating shaft.
Further, the liquid spray bar includes:
the nozzles are respectively arranged at the bottom of the liquid spraying rod and used for spraying the dust suppressant of the liquid spraying rod within a specified range;
and the infrared velometer is arranged on one side of the liquid spraying rod and used for detecting the speed of the train and sending the detected information to the remote terminal equipment so as to manage the instant stirring device.
Furthermore, a plurality of stirring blades are arranged in the stirring device.
Furthermore, a weighing module is arranged on the powder bin and used for weighing the powder in the powder bin.
Compared with the prior art, the utility model discloses utilize first electromagnetic flow valve, weighing module, screw conveyer to mix water and powder according to setting for the proportion, realize the automatic blending of solution. The device mixes the powder and water back through a plurality of stirring vane of installation in the primary mixing device, can realize the stirring when rivers flow in the pipeline, later stirs solution once more through establishing ties the homogeneity pump, reaches and sprays required concentration. Through this kind of mode, save traditional storage agitator tank, need not the storage, spray while stirring realizes spraying immediately.
Drawings
FIG. 1 is a schematic view of an instant stirring device in the instant stirring and spraying device for dust suppressant in railway coal transportation according to the present invention;
FIG. 2 is a schematic view of a spraying device of the instant stirring and spraying device for dust suppressant in railway coal transportation according to the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Please refer to fig. 1-3, which illustrate the instant stirring and spraying device for dust suppressant in railway coal transportation of the present invention, comprising: powder storehouse 1, screw conveyer 2, first homogenizing pump 3, water inlet 4, first electromagnetic flow valve 5, agitating unit 6, stirring vane 7, second homogenizing pump 8, plunger water pump 9, second electromagnetic flow valve 10, sprinkler interface 11, stand 12, connecting seat 13, second motor 14, bull stick 15, hydrojet pole 16, nozzle 17, material loading pipe 18, gag lever post 19, limiting plate 20, elevating system 21, infrared velometer 22, bearing 23, first bevel gear 24, connecting pipe 25, movable column 26, axis of rotation 27, second bevel gear 28, second motor 29, remote terminal equipment (not drawn in the figure) wherein: the powder bin 1 is arranged on the device and used for receiving and storing powder to transmit the powder to the screw conveyor 2; the screw conveyor 2 is arranged at the bottom of the powder bin 1 and used for receiving the powder conveyed by the powder bin 1 and conveying the powder to the stirring device 6; one side of the first homogenizing pump 3 is connected with the stirring device 6, and the other side of the first homogenizing pump is connected with the second homogenizing pump 8, so that the dust suppressant treated by the stirring device 6 is stirred; the water inlet 4 is arranged on the device; the first electromagnetic flow valve 5 is arranged on the device and used for acquiring information of the specified water quantity passing through the first electromagnetic flow valve 5 and correspondingly adjusting the water quantity according to the information; the stirring device 6 is arranged on the device and is used for receiving the powder transmitted by the screw conveyor 2 and the water flow adjusted by the first electromagnetic flow valve 5 and stirring the powder and the water flow; a plurality of stirring blades 7 are arranged in the stirring device 6; the second homogenizing pump 8 is connected with the first homogenizing pump 3 and is used for receiving the dust suppressant processed by the first homogenizing pump 3 and stirring again to transmit the dust suppressant to the plunger water pump 9; the plunger water pump 9 is connected with the second homogenizing pump 8 and is used for transmitting the dust suppressant transmitted by the second homogenizing pump 8 to the second electromagnetic flow valve 10; a second electromagnetic flow valve 10 connected to the plunger water pump 9 for delivering the dust suppressant delivered by the plunger water pump 9 to the sprinkler interface 11; the upright post 12 is internally provided with a lifting mechanism and is connected with the connecting seat 13 to protect and bear a designated part; the connecting seat 13 is arranged at the top of the upright column and connected with the liquid spraying rod so as to protect and bear a designated part; a first motor 14 disposed inside the connection seat to rotate a rotation lever by driving the first motor; and the rotating rod 15 is positioned at the output end of the second motor, penetrates through the liquid spraying rod and is used for driving the liquid spraying rod to rotate correspondingly through appointed rotation. And a liquid spray bar 16 connected to the rotary bar 15 for spraying the dust suppressant within a predetermined range according to the rotation of the rotary bar. The nozzles 17 are respectively arranged at the bottom of the liquid spray rod 16 and used for spraying the dust suppressant of the liquid spray rod 16 within a specified range; the feeding pipe 18 is arranged on one side of the upright post 12 and/or the connecting seat 13 and is used for transporting the dust suppressant delivered by the instant stirring device to the liquid spraying rod 16 through the spraying device interface 11; a stopper rod 19 provided inside the elevating mechanism 21 to move the designated part inside the elevating mechanism 21 through a stopper plate 20; the limiting plate 20 is arranged at the bottom of the lifting mechanism 21 and connected with the limiting rod 19 so as to enable the limiting plate 20 to move up and down on the lifting mechanism 21; an infrared velometer 22, which is provided at one side of the liquid spray rod 16, and is used for detecting the speed of the train and sending the detected information to a remote terminal device to manage the instant stirring device; the bearing 23 penetrates through the top end of the upright post 12, is sleeved outside the connecting pipe 25 and is used for pushing the connecting seat 13 to move up and down; a first bevel gear 24, which is sleeved outside the connecting pipe 25 and is located at the lower end of the bearing 23, and is used for driving other components to perform specified rotation through a second bevel gear 28; a connecting pipe 25, which is sleeved outside the movable column and is used for connecting the movable column 26 and the bearing 23; a movable column 26 disposed on the top of the limiting plate 20 and connected to the connecting pipe for moving up and down along the bearing 23 to drive the connecting base 13 to move up and down; the rotating shaft 27 penetrates through the side wall of the upright post 12, is connected with the output end of a second motor 29, and is used for driving other components to rotate in a designated manner through the second motor 29; a second bevel gear 28 sleeved on one side of the rotating shaft 27 and vertically meshed with the first bevel gear 24 for driving other components to rotate in a specified manner through the rotating shaft 27; and a second motor 29 fixedly disposed on an outer sidewall of the upright 12 for driving the second motor 29 to rotate the first bevel gear 24 and the rotating shaft 27 to drive other components.
When the equipment is in operation, after the infrared velometer 22 detects the speed of a train, the remote terminal equipment can rapidly calculate the required amount of water and powder, and convey the water and the powder into the device, after the water flow enters the device through the water inlet 4, the water flow controls the flow of the water through the first electromagnetic flow valve 5, the first electromagnetic flow valve 5 displays and feeds back the flow of the water, meanwhile, the powder enters the storage bin 1 for storage, the storage bin 1 conveys the powder with the specified weight to the stirring device 6 along with the water flow in proportion through the small screw conveyor 2, during the conveying process, the water and the powder are preliminarily mixed in the pipeline and then conveyed into the primary stirring device 6, a plurality of stirring blades 7 carry out primary stirring on the water and the powder, after the stirring is finished, the dust suppressant enters the first homogenizing pump 3 through the pipeline for secondary stirring, after the stirring is finished, the second homogenizing pump 8 carries out secondary stirring, later will reach the dust suppressant that sprays of predetermined concentration and pass through plunger pump 9 and transmit and get into the hydrojet pole after the stand, drive axis of rotation 27 and second bevel gear 28 through drive second motor 23 and rotate, second bevel gear 28 rotates and can drive first bevel gear 24 and the connecting pipe 25 rotation of meshing with it, movable column 31 can only follow bearing 32 up-and-down motion when connecting pipe 33 rotates, thereby drive connecting seat 13 whole and go up and down, thereby can adjust the whole height of hydrojet pole 20, and then spray solution through a plurality of nozzles 17.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides an instant stirring sprinkler of railway coal transportation dust suppressant which characterized in that, includes instant stirring device and sprinkler, wherein:
the instant stirring device is used for instantly stirring the water and the powder and transmitting the water and the powder to the spraying device;
and the spraying device is connected with the instant stirring device and used for receiving the dust suppressant transmitted by the instant stirring device and spraying the dust suppressant to a specified position.
2. The railway coal transportation dust suppressant instant stirring and spraying device of claim 1, wherein said instant stirring device comprises:
a powder bin disposed on the apparatus for receiving and storing powder for delivery to the screw conveyor;
the screw conveyer is arranged at the bottom of the powder bin and used for receiving the powder conveyed by the powder bin and conveying the powder to the stirring device;
one side of the first homogenizing pump is connected with the stirring device, and the other side of the first homogenizing pump is connected with the second homogenizing pump and used for stirring the dust suppressant treated by the stirring device;
the first electromagnetic flow valve is arranged on the device and used for acquiring information of the specified water quantity passing through the first electromagnetic flow valve and correspondingly adjusting the water quantity according to the information;
the stirring device is arranged on the device and used for receiving the powder transmitted by the screw conveyer and the water flow regulated by the first electromagnetic flow valve and stirring the powder and the water flow;
the second homogenizing pump is connected with the first homogenizing pump and is used for receiving the dust suppressant treated by the first homogenizing pump, stirring again and transmitting the dust suppressant to the plunger water pump;
the plunger water pump is connected with the second homogenizing pump and is used for transmitting the dust suppressant transmitted by the second homogenizing pump to the second electromagnetic flow valve;
and the second electromagnetic flow valve is connected with the plunger water pump and is used for transmitting the dust suppressant transmitted by the plunger water pump to the interface of the spraying device.
3. The railway coal transportation dust suppressant instant whipping sprinkler of claim 2, wherein said instant whipping device further comprises a water inlet and a sprinkler interface.
4. The railway coal transportation dust suppressant instant agitated spray apparatus of claim 1, wherein said spray apparatus comprises:
the inner part of the upright post is provided with a lifting mechanism and is connected with the connecting seat so as to protect and bear a designated part;
the connecting seat is arranged at the top of the upright post and connected with the liquid spraying rod so as to protect and bear a designated part;
the feeding pipe is arranged on one side of the upright post and/or the connecting seat and is used for transporting the dust suppressant transmitted by the instant stirring device to the liquid spraying rod through the spraying device interface;
and the liquid spraying rod is connected with the rotating rod and is used for spraying the dust suppressant within a specified range according to the rotation of the rotating rod.
5. The railway coal transportation dust suppressant instant stirring spraying device of claim 4, wherein said connection base comprises:
the first motor is arranged inside the connecting seat and used for driving the first motor to rotate the rotating rod;
and the rotating rod is positioned at the output end of the second motor and penetrates through the liquid spraying rod, and is used for driving the liquid spraying rod to rotate correspondingly through appointed rotation.
6. The railway coal transportation dust suppressant instant stirring spraying device of claim 4, wherein said column comprises:
the limiting rod is arranged in the lifting mechanism and used for moving the specified part in the lifting mechanism through the limiting plate;
the limiting plate is arranged at the bottom of the movable column, is connected with the limiting rod and is used for enabling the limiting plate to move in a lifting mechanism in a lifting mode;
the movable column is arranged at the top of the limiting plate, is connected with the connecting pipe and is used for lifting along the bearing to drive the connecting seat to lift;
the bearing penetrates through the top end of the upright column, is sleeved outside the connecting pipe and is used for pushing the connecting seat to lift and move;
the connecting pipe is sleeved outside the movable column and used for connecting the movable column and the bearing;
the second motor is fixedly arranged on the outer side wall of the upright post and used for driving the second motor to rotate the first bevel gear and the rotating shaft so as to drive other components;
the first bevel gear is sleeved outside the connecting pipe and positioned at the lower end of the bearing, and is used for driving other parts to rotate in a specified manner through the second bevel gear;
the rotating shaft penetrates through the side wall of the upright column, is connected with the output end of the second motor and is used for driving other parts to rotate in an appointed way through the second motor;
and the second bevel gear is sleeved on one side of the rotating shaft and vertically meshed with the first bevel gear so as to drive other parts to rotate in a specified manner through the rotating shaft.
7. The railway coal transportation dust suppressant instant stirring spraying device of claim 4, wherein said liquid spray bar comprises:
the nozzles are respectively arranged at the bottom of the liquid spraying rod and used for spraying the dust suppressant of the liquid spraying rod within a specified range;
and the infrared velometer is arranged on one side of the liquid spraying rod and used for detecting the speed of the train and sending the detected information to the remote terminal equipment so as to manage the instant stirring device.
8. The railway coal transportation dust suppressant instant stirring and spraying device of claim 2, wherein a plurality of stirring blades are arranged in the stirring device.
9. The railway coal transportation dust suppressant instant stirring and spraying device of claim 2, wherein the powder bin is provided with a weighing module for weighing the powder in the powder bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022527288.1U CN214811839U (en) | 2020-11-05 | 2020-11-05 | Instant stirring and spraying device for dust suppressant in railway coal transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022527288.1U CN214811839U (en) | 2020-11-05 | 2020-11-05 | Instant stirring and spraying device for dust suppressant in railway coal transportation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214811839U true CN214811839U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022527288.1U Expired - Fee Related CN214811839U (en) | 2020-11-05 | 2020-11-05 | Instant stirring and spraying device for dust suppressant in railway coal transportation |
Country Status (1)
| Country | Link |
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| CN (1) | CN214811839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112221764A (en) * | 2020-11-05 | 2021-01-15 | 神木市锦界安顺煤矿机电修造有限公司 | Instant stirring and spraying device for dust suppressant in railway coal transportation |
-
2020
- 2020-11-05 CN CN202022527288.1U patent/CN214811839U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112221764A (en) * | 2020-11-05 | 2021-01-15 | 神木市锦界安顺煤矿机电修造有限公司 | Instant stirring and spraying device for dust suppressant in railway coal transportation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |