CN215633094U - Coal dust suppression device - Google Patents
Coal dust suppression device Download PDFInfo
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- CN215633094U CN215633094U CN202120815284.5U CN202120815284U CN215633094U CN 215633094 U CN215633094 U CN 215633094U CN 202120815284 U CN202120815284 U CN 202120815284U CN 215633094 U CN215633094 U CN 215633094U
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Abstract
The embodiment of the utility model discloses a coal dust suppression device which comprises a mist outlet main body, an electric adjusting gas circuit and an electric adjusting liquid circuit, wherein a built-in gas circuit and a built-in liquid circuit are arranged in the mist outlet main body, an interlayer is arranged between the built-in gas circuit and the built-in liquid circuit, small holes are formed in the interlayer, and an opening connected with the built-in gas circuit is formed in the mist outlet main body. The coal dust suppression device is provided with the electric adjusting gas circuit and the electric adjusting liquid circuit, the electric adjusting gas circuit receives a system control signal to adjust the gas pressure, the electric adjusting liquid circuit receives a system control signal to adjust the water pressure, the system control of gas and liquid flow is realized, the water yield can be automatically calculated, meanwhile, the mixing ratio of gas and liquid can be controlled, the size of fog drops and the spraying distance can be controlled, the requirements of dust fall and dust lock of all working surfaces in a coal mine are basically met, the intelligent and automatic degree is high, the remote control can be realized, and the safety is high.
Description
Technical Field
The embodiment of the utility model relates to the technical field of coal dust suppression, in particular to a coal dust suppression device.
Background
Historically, coal dust explosion accidents in particularly serious coal mine accidents account for more than 60%, and the four well-known factors of coal dust explosion, namely explosiveness, oxygen, fire source and coal dust concentration, are important to determine which can be used as a safety index for real-time monitoring and used as a standard for judging the coal dust explosion possibility. Wherein almost all coal dust is explosive, and the real-time field detection has no practical significance.
Oxygen is required to be more than 20% and the lowest more than 18% under the working condition of oxygen, so that the explosion requirement is inevitably met, and the monitoring of the oxygen has no practical significance for preventing and controlling coal dust explosion.
The system comprises a fire source (high-temperature heat source), a high-temperature heat source causing coal dust explosion, blasting, current short circuit, coal bed ignition and the like, and has positive significance for timely finding out short circuit ignition, high-temperature places and the like of a part of cables by comprehensively scanning in real time (for example, using a thermal imaging technology) to detect temperature abnormity. However, since some short circuits, explosions, and the like are all completed instantaneously, there is no time for a person to leave a reaction process for an explosion, and thus there is no real-time significance for stopping the coal dust explosion even if the detection is possible.
Most of coal mine working space coal dust concentration can not meet the requirement of blasting concentration, and in the coal dust blasting of more than 95%, coal dust deposited on the ground is stirred and flies due to gas blasting and strong airflow movement, so that the space coal dust concentration reaches the minimum concentration (30000mg/m3, or 45000mg/m3) required by blasting, and therefore dust locking and washing are required to be carried out on the deposited coal dust at ordinary times, and equipment capable of locking and washing the deposited coal dust is required.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a coal dust suppression device to solve the problems of more spraying equipment and water resource waste caused by short spraying distance and uncontrollable water amount in the prior art.
In order to achieve the above object, an embodiment of the present invention provides the following:
a coal dust suppression device comprises a mist outlet main body, an electric adjusting gas circuit and an electric adjusting liquid circuit, wherein a built-in gas circuit and a built-in liquid circuit are arranged in the mist outlet main body, an interlayer is arranged between the built-in gas circuit and the built-in liquid circuit, small holes are formed in the interlayer, and an opening connected with the built-in gas circuit is formed in the mist outlet main body.
In yet another embodiment of the present invention, the barrier is a cylindrical structure.
In another embodiment of the utility model, the opening is an inwardly concave conical opening, and the inclined side wall of the conical opening is provided with an outlet small hole.
In yet another embodiment of the present invention, the outlet orifice is provided with an atomizer.
In a further embodiment of the utility model, a mesh structure is arranged in the mist outlet main body along the cross section of the built-in liquid path.
In another embodiment of the present invention, the electric adjusting gas circuit includes an air compressor, a gas storage tank, a gas circuit electromagnetic valve, and a gas circuit electric adjusting valve, the air compressor is connected to the gas storage tank through a gas pipe, and an air outlet end of the gas storage tank is connected to the gas circuit electromagnetic valve and the gas circuit electric adjusting valve.
In another embodiment of the present invention, the electric regulating fluid path includes a water source, a water pump, a water path solenoid valve, and an electric water path regulating valve, the water pump is connected to the water source through a water supply pipe, and a water outlet end of the water pump is connected to the water path solenoid valve and the electric water path regulating valve.
In another embodiment of the utility model, the water pump is sequentially connected with the waterway electric regulating valve, the two-position three-way electromagnetic valve and the waterway electromagnetic valve, the water inlet end of the two-position three-way electromagnetic valve is connected with the waterway electric regulating valve, and the two water outlet ends of the two-position three-way valve are respectively connected with the high-pressure water gun and the waterway electromagnetic valve.
In a further embodiment of the present invention, the electric adjusting gas circuit and the electric adjusting liquid circuit are both connected to a control device, and the control device is respectively connected to a temperature sensor and a humidity sensor.
In a further embodiment of the utility model, the control device is connected to a concentration acquisition device.
According to the embodiment of the utility model, the following advantages are provided:
the coal dust suppression device is provided with the electric adjusting gas circuit and the electric adjusting liquid circuit, the electric adjusting gas circuit receives a system control signal to adjust the gas pressure, the electric adjusting liquid circuit receives a system control signal to adjust the water pressure, the system control of gas and liquid flow is realized, the water yield can be automatically calculated, meanwhile, the mixing ratio of gas and liquid can be controlled, the size of fog drops and the spraying distance can be controlled, the requirements of dust fall and dust lock of all working surfaces in a coal mine are basically met, the intelligent and automatic degree is high, the remote control can be realized, and the safety is high.
The coal dust suppression device is provided with a unique water-vapor mixing structure, so that water drops are broken for multiple times, the diameter of fog particles is 30-150 mu m, the fog particles have transverse drift capability, and the fog particles move remotely under the pushing of high-pressure air flow, so that the fog particles absorb heat and are converted into water vapor before falling to the ground, and the humidification effect is realized. The proportion of the gas and the liquid can be adjusted, the proportion of the water is increased, the sprayed water drops are enlarged, and the effect of reducing dust of particles in the air can be realized.
The coal dust suppression device is applied to areas generating coal dust, the areas such as a roadway and the like with small coal dust change can be locked by using the condensation technology, the coal dust concentration of the areas is easy to increase instantly, such as a coal face, a coal piling working area and the like, and the actual water content in the air is controlled to suppress coal dust explosion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a system configuration diagram of a coal dust suppression device according to an embodiment of the present invention;
FIG. 2 is an internal structural view of the mist discharging body of FIG. 1;
FIG. 3 is an enlarged view of the opening of a coal dust suppressing apparatus according to another embodiment of the present invention;
FIG. 4 is an expanded view of the structure of FIG. 1;
fig. 5 is a system configuration diagram of a coal dust suppression apparatus according to another embodiment of the present invention;
fig. 6 is a device configuration view of a coal dust suppression device according to another embodiment of the present invention;
fig. 7 is a system configuration diagram of a coal dust suppression device according to another embodiment of the present invention.
In the figure:
1. a mist outlet body; 2. electrically adjusting the gas circuit; 3. electrically adjusting the liquid path; 4. a gas circuit is arranged inside; 5. a liquid path is arranged inside; 6. an interlayer; 7. a small hole; 8. an opening; 9. a tapered opening; 10. an outlet aperture; 11. an air compressor; 12. a gas storage tank; 13. a gas circuit electromagnetic valve; 14. an electric regulating valve of the gas circuit; 15. a water source; 16. a water pump; 17. a waterway electromagnetic valve; 18. a waterway electric regulating valve; 19. a two-position three-way electromagnetic valve; 20. a high pressure water gun; 21. rotating and sealing; 22. a chassis; 23. a motor drive gear set; 24. a high pressure hose; 25. a control device; 26. a temperature sensor; 27. a humidity sensor; 28. concentration acquisition device.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
As shown in fig. 1 and 2, the coal dust suppression device comprises a mist outlet main body 1, an electric adjusting gas circuit 2 and an electric adjusting liquid circuit 3, wherein a built-in gas circuit 4 and a built-in liquid circuit 5 are arranged in the mist outlet main body 1, an interlayer 6 is arranged between the built-in gas circuit 4 and the built-in liquid circuit 5, a small hole 7 is arranged on the interlayer 6, and an opening 8 connected with the built-in gas circuit 4 is arranged on the mist outlet main body 1. The electric adjusting gas circuit 2 receives a system control signal to adjust the gas pressure, the electric adjusting liquid circuit 3 receives a system control signal to adjust the water pressure, the system control of the gas-liquid flow is realized, the electric adjusting liquid circuit 3 introduces water into the built-in liquid circuit 5, the water flows into the built-in gas circuit 4 from the small hole 7 to carry out the first water crushing, the water flow forms a small water column, the small water column is sprayed onto the inner wall of the built-in gas circuit 4 to carry out the second water crushing, the high-pressure gas drives the water drops to move towards the opening 8, the water drops at the rear side can collide with the water drops at the front in the moving process to carry out the third crushing, the water drops collide with particles in the air after being sprayed out from the opening 8 to carry out the fourth crushing, and therefore the size of the water drops can be changed into a size capable of transverse movement and can move for an ultra-long distance under the driving of the high-pressure gas flow, and a large amount of the water drops can be evaporated into steam before falling to the ground in the moving process because of the water drops are very small, realize the humidification to the environment. The proportion of the gas and the liquid can be adjusted, the proportion of the water is increased, the sprayed water drops are enlarged, and the dust settling effect on particles in the air can be realized. In order to increase the spraying area, the spraying main body can be a multi-head structure, such as a T-shaped double-head structure, and can spray in two opposite directions at the same time.
In order to promote steam area of contact, increase the water yield on the basis of guaranteeing the effect, interlayer 6 is preferably the tubular structure, and it is sleeve structure to go out fog main part 1, is built-in gas circuit 4 in interlayer 6, and interlayer 6 is outer for built-in liquid way 5, and aperture 7 can set up around interlayer 6, can set up aperture 7 at interlayer 6's bilateral symmetry moreover, make the water column of both sides clash each other, reduce the displacement distance of water droplet secondary crushing, just accomplished the secondary crushing on the water droplet has not acted on completely at high-pressure gas yet, can be fine the crushing effect of completion water droplet under high-pressure gas's impact.
As shown in fig. 3, the opening 8 is an inwardly concave conical opening 9, the inclined side wall of the conical opening 9 is provided with small outlet holes 10, and water drops moving in different directions are added at the opening 8 to increase the crushing effect among the water drops. Specifically, the water droplets obliquely sprayed from the outlet orifice 10 are crushed at one time, and simultaneously collided and crushed with the water droplets sprayed from the mist outlet body 1, and then are crushed three times with the particulate matter by the high-pressure air flow after being introduced into the air. Be equipped with atomizer on the export aperture 10 for carry out the atomizing breakage with export aperture 10 spun water droplet, directly form the water droplet, carry out the collision breakage of equidimension with the water droplet of high-pressure draught direction, make the water droplet more tiny.
The mist outlet main body 1 is internally provided with a net structure paved along the cross section of the built-in liquid path 5, is used for increasing the crushing effect of water drops in the built-in gas path 4, but can reduce the impact effect of high-pressure air flow, so that the sprayed mist can not fly out too far, and can be set according to the mist spraying requirement.
As shown in fig. 4, the electric adjusting gas circuit 2 includes an air compressor 11, a gas storage tank 12, a gas circuit electromagnetic valve 13, and a gas circuit electric adjusting valve 14, the air compressor 11 is connected to the gas storage tank 12 through a gas pipe, and an air outlet end of the gas storage tank 12 is connected to the gas circuit electromagnetic valve 13 and the gas circuit electric adjusting valve 14. Air compressor 11's inlet end can set up gas filter, because various granules are all floating in fields such as colliery working face, tunnel, sets up gas filter and can avoid the problem that gas compressor 11 damaged when coal dust concentration is too high, can purify whole air current system moreover, prevents the problem of pollution.
The electric adjusting liquid path 3 comprises a water source 15, a water pump 16, a water path electromagnetic valve 17 and a water path electric adjusting valve 18, wherein the water pump 16 is connected with the water source 15 through a water feeding pipe, and the water outlet end of the water pump 16 is connected with the water path electromagnetic valve 17 and the water path electric adjusting valve 18. The water source 15 is a mining water supply system, a water tank can be arranged as required, a water inlet of the water pump 16 is provided with a liquid filter, pollutants and particles in water are reduced, and air pollution or damage to a built-in waterway system after atomization is avoided.
As shown in fig. 5, the water pump 16 is sequentially connected to the waterway electric regulating valve 18, the two-position three-way solenoid valve 19, and the waterway solenoid valve 17, a water inlet end of the two-position three-way solenoid valve 19 is connected to the waterway electric regulating valve 18, and two water outlet ends of the two-position three-way solenoid valve are respectively connected to the high-pressure water gun 20 and the waterway solenoid valve 17. The two-position three-way electromagnetic valve 19 changes a water passage path according to the received control signal, and after the coal dust falls or is accumulated to a certain degree, the deposited coal dust needs to be washed by water, so that the water passage path is changed, water flow is sprayed out from the high-pressure water gun 20, and the deposited coal dust on the dust falling surface is washed. The water outlet direction of the high-pressure water gun 20 is the same as the mist outlet direction of the mist outlet main body 1, the high-pressure water gun 20 is fixed on the mist outlet main body 1, the two water guns use synchronous rotation, the two-position three-way electromagnetic valve 19 and the high-pressure water gun 20 are connected through the high-pressure hose 24, the coal dust suppression and coal dust washing integrated, automatic and intelligent control are achieved, other work is not needed, the manual participation degree is reduced, and the health and safety of workers are guaranteed.
As shown in fig. 6, the bottom of the mist outlet main body 1 is connected to the bottom frame 22 through a rotary seal 21, the rotary seal 21 communicates with the built-in air passage 4 and the electric adjusting air passage 2, and the mist outlet main body 1 is rotated by a motor driving gear set 23. Specifically, the bottom of the mist outlet main body 1 is provided with a driven gear, the driven gear is meshed with a driving gear, the driving gear is arranged on a driving servo motor, and the mist outlet main body 1 is provided with a rotary seal 21 for rotatably connecting a pipeline between the built-in air passage 4 and the electric adjusting air passage 2. The mist generating main body 1 is connected to the electric control fluid path 3 through a high-pressure hose 24, and the high-pressure hose 24 is rotatable in accordance with the rotation of the mist generating main body 1.
As shown in fig. 7, the electric control gas circuit 2 and the electric control liquid circuit 3 are both connected to a control device 25, and the control device 25 is connected to a temperature sensor 26 and a humidity sensor 27, respectively. Temperature sensor 26 gathers the aerial temperature of surrounding environment, humidity transducer 27 gathers the aerial relative humidity of surrounding environment, and according to the dust falling surface temperature of surrounding wall, obtain the condensation relative humidity in the air when being located the condensation on the surrounding wall just under the present aerial and dust falling surface humiture circumstances, if the relative humidity in the air of actual collection is less than this condensation relative humidity, whether control needs to start out the fog humidification, in order to realize that controlling means 25 controls the start-up opportunity of electric regulation gas circuit 2 and electric regulation liquid circuit 3, make out the fog appropriate and can reach surrounding wall condensation effect, thereby control liquid flow and wave by a wide margin, realize the effect of restraining the coal dust blasting with less water resource.
The control device 25 is connected to a concentration acquisition device 28, and the concentration acquisition device 28 in this embodiment is a PM2.5 air quality detector, a PM1.0 air quality detector, or the like. The control device 25 is configured to receive the particulate matter concentration sent by the concentration acquisition device 28, the control device 25 calculates the actual water content in the air according to the particulate matter concentration and the air absolute humidity calculated by combining the air temperature and the air humidity, and if the actual water content is lower than a standard value, the control device 25 starts the electric adjusting gas circuit 2 and the electric adjusting liquid circuit 3 to humidify the space, so that the actual water content in the space is higher than the standard, and the effect of inhibiting the air coal dust explosion is achieved. Because the coal dust occupies the absolute quantity of particulate matters in the coal mine, the data of other sucked particulate matters can be ignored, the condition can be slightly higher than the actual coal dust concentration, the humidifying threshold is reduced, and the stability of the humidifying anti-explosion effect can be improved.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (10)
1. A coal dust suppression device, characterized in that: the electric mist sprayer comprises a mist spraying main body, an electric adjusting gas circuit and an electric adjusting liquid circuit, wherein a built-in gas circuit and a built-in liquid circuit are arranged in the mist spraying main body, an interlayer is arranged between the built-in gas circuit and the built-in liquid circuit, small holes are formed in the interlayer, and an opening connected with the built-in gas circuit is formed in the mist spraying main body.
2. A smut suppression apparatus according to claim 1, wherein: the interlayer is of a cylindrical structure.
3. A smut suppression apparatus according to claim 1, wherein: the opening is an inward-recessed conical opening, and an outlet small hole is formed in the inclined side wall of the conical opening.
4. A smut suppression apparatus according to claim 1, wherein: and the small outlet hole is provided with an atomizing nozzle.
5. A smut suppression apparatus according to claim 1, wherein: and a net structure paved along the cross section of the built-in liquid path is arranged in the mist outlet main body.
6. A smut suppression apparatus according to claim 1, wherein: the electric adjusting gas circuit comprises an air compressor, a gas storage tank, a gas circuit electromagnetic valve and a gas circuit electric adjusting valve, wherein the air compressor is connected with the gas storage tank through a gas pipe, and the gas outlet end of the gas storage tank is connected with the gas circuit electromagnetic valve and the gas circuit electric adjusting valve.
7. A smut suppression apparatus according to claim 1, wherein: the electric regulating liquid path comprises a water source, a water pump, a water path electromagnetic valve and a water path electric regulating valve, the water pump is connected with the water source through a water feeding pipe, and the water outlet end of the water pump is connected with the water path electromagnetic valve and the water path electric regulating valve.
8. A smut suppression apparatus according to claim 7, wherein: the water pump connects gradually water route electrical control valve, two-position three way solenoid valve, water route electrical control valve is connected to two-position three way solenoid valve's the end of intaking, two play water ports of two-position three way valve are connected high-pressure squirt and water route solenoid valve respectively.
9. A smut suppression apparatus according to claim 1, wherein: the electric adjusting gas circuit and the electric adjusting liquid circuit are both connected with a control device, and the control device is respectively connected with a temperature sensor and a humidity sensor.
10. A smut suppression apparatus according to claim 9, wherein: the control device is connected with the concentration acquisition device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120815284.5U CN215633094U (en) | 2021-04-20 | 2021-04-20 | Coal dust suppression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120815284.5U CN215633094U (en) | 2021-04-20 | 2021-04-20 | Coal dust suppression device |
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| Publication Number | Publication Date |
|---|---|
| CN215633094U true CN215633094U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120815284.5U Active CN215633094U (en) | 2021-04-20 | 2021-04-20 | Coal dust suppression device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633094U (en) |
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2021
- 2021-04-20 CN CN202120815284.5U patent/CN215633094U/en active Active
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