CN112761707B - Integrated preparation system of active agent solution for underground coal mine spraying dust fall - Google Patents
Integrated preparation system of active agent solution for underground coal mine spraying dust fall Download PDFInfo
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- CN112761707B CN112761707B CN202110068361.XA CN202110068361A CN112761707B CN 112761707 B CN112761707 B CN 112761707B CN 202110068361 A CN202110068361 A CN 202110068361A CN 112761707 B CN112761707 B CN 112761707B
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- 239000013543 active substance Substances 0.000 title claims abstract description 100
- 239000003245 coal Substances 0.000 title claims abstract description 33
- 239000000428 dust Substances 0.000 title claims abstract description 32
- 238000005507 spraying Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 239000007921 spray Substances 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims description 75
- 238000003860 storage Methods 0.000 claims description 27
- 238000007667 floating Methods 0.000 claims description 17
- 230000003068 static effect Effects 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000005065 mining Methods 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000012190 activator Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/06—Fluids used for spraying
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses an integrated preparation system of an active agent solution for spray dust fall of a coal mine underground, which comprises a clear water stable supply system, an active agent quantitative negative pressure suction and mixing system, an active agent solution automatic pressurization system and a PLC (programmable logic controller), wherein the clear water stable supply system provides required water flow for the active agent quantitative negative pressure suction and mixing system to form a stable negative pressure suction active agent, then the active agent solution with uniform concentration is prepared through a mixer, and the active agent solution is pressurized through the active agent solution automatic pressurization system to provide the active agent dust fall spray solution with uniform mixing for a coal mine underground excavation working surface. The system provided by the invention is simple to operate and high in automation degree, and can realize high-efficiency preparation of the active agent dust-settling solution integrating automatic water supply, automatic and accurate addition of the active agent, mixing and spraying pressurization.
Description
Technical Field
The invention relates to the technical field of mine dust control, in particular to an integrated preparation system of an active agent solution for underground spraying dust fall of a coal mine.
Background
Coal still occupies the leading position in the Chinese energy structure, but more than 90 percent of the coal is in an underground mining form, and the underground dust generation amount is also greatly increased along with the high mechanization of the mining mode. Coal mine underground water spraying is widely applied due to the advantages of economy, easiness in operation and the like, but due to high hydrophobicity of coal dust, the water spraying dust settling efficiency is generally low, and particularly for respiratory dust. In order to improve the wetting property of water, the dust catching capacity of the underground spraying solution can be effectively improved by adding the surfactant. However, the existing active agent is added in a manual mixing manner, so that the labor intensity of workers is improved, and meanwhile, the prepared active agent solution has low accuracy and cannot fully exert the dust settling capacity of the active agent solution. To address this problem, CN101251025A discloses that the dosing pump is used to achieve active agent addition, however, the dosing pump cannot achieve small active agent addition; CN102748063A discloses that underground compressed air is used as power to add an active agent solution, however, compressed air is easily affected by other wind using places, and the pressure is suddenly changed, so that a stable power source cannot be formed, and the active agent cannot be accurately and stably added. In order to realize automatic and accurate addition of the active agent, an active agent addition system which is reliable in operation and strong in automation capacity is urgently needed to be developed.
Disclosure of Invention
The invention aims to provide an integrated preparation system of an active agent solution for underground spray dust fall of a coal mine, which is simple to operate, efficient, automatic, accurate in control and convenient to maintain.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an integrated preparation system of an active agent solution for spray dust fall in a coal mine comprises a clear water stable supply system, an active agent quantitative negative pressure suction and mixing system, an active agent solution automatic pressurization system and a PLC (programmable logic controller);
the clean water stable supply system comprises a water supply pipeline, an electric ball valve I, an electric ball valve II, a liquid level meter I, a clean water storage tank, a relay I and a variable frequency centrifugal pump, wherein the water supply pipeline, the electric ball valve I and the clear water liquid storage tank are combined together by adopting a pressure-resistant rubber pipe I through mining quick joint, the water supply pipeline, the electric ball valve II and the clear water liquid storage tank are combined together by adopting a pressure-resistant rubber pipe II through mining quick joint, the liquid level meter I is arranged in the clear water liquid storage tank, the electric ball valve I, the electric ball valve II, the liquid level meter I and the relay I are respectively connected with the PLC, the liquid level meter I is used for collecting liquid level signals at corresponding positions in the clear water liquid storage tank and sending the liquid level signals to the PLC, the PLC sends control instructions to the electric ball valve I and the electric ball valve II after receiving the liquid level signals transmitted by the liquid level meter I, the relay I controls the work of the variable-frequency centrifugal pump according to the control instruction of the PLC;
the active agent quantitative negative pressure suction and mixing system comprises a pure active agent box, a Venturi suction device and a static mixer, wherein a liquid inlet of the Venturi suction device is connected with an outlet of a clear water liquid storage box through a variable frequency centrifugal pump, a suction port of the Venturi suction device is connected with an outlet of the pure active agent box, a liquid discharge port of the Venturi suction device is connected with an inlet of the static mixer, an electric regulating valve and a numerical flow meter are further arranged between the pure active agent box and the Venturi suction device, and the electric regulating valve and the numerical flow meter are respectively connected with a PLC (programmable logic controller);
automatic pressurization system of active agent solution include active agent solution liquid reserve tank, level gauge II, water quality filter, spraying force (forcing) pump and relay II, static mixer's exit linkage active agent solution liquid reserve tank, water quality filter, spraying force (forcing) pump adopt withstand voltage rubber tube to connect gradually, level gauge II sets up in active agent solution liquid reserve tank, and level gauge II, relay II are connected with the PLC controller respectively, and level gauge II is used for gathering active agent solution liquid reserve tank relevant position's level signal and sending for the PLC controller, and the PLC controller sends control command to relay I, electrical control valve and numerical flow meter after receiving the level signal that II transmissions of level gauge come, relay II basis the control command of PLC controller controls spraying force (forcing) pump's work.
Preferably, the pure active agent box, the Venturi suction device and the static mixer are connected through a pressure-resistant rubber pipe, and the active agent solution storage box, the water quality filter and the spray pressure pump are connected through the pressure-resistant rubber pipe.
Preferably, the flow range of the variable frequency centrifugal pump is 50-400L/min.
Preferably, the negative pressure suction amount range of the Venturi suction device is less than or equal to 20L/h.
Preferably, the electric ball valve I and the electric ball valve II are opened or closed simultaneously.
Preferably, electric ball valve I, electric ball valve II, level gauge I, level gauge II, relay I, relay II, frequency conversion centrifugal pump, electrical control valve, numerical flowmeter, spraying force (forcing) pump are the explosion-proof type.
More preferably, the liquid level meter I and the liquid level meter II are both magnetic floating ball type liquid level meters.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the integrated preparation system for the active agent solution for spray dust fall in the coal mine, disclosed by the invention, an automatic control system consisting of a PLC (programmable logic controller), an electric ball valve, a relay, an electric regulating valve, a numerical flow meter and a liquid level meter is utilized, so that the automatic accurate addition of the active agent can be realized, the efficient preparation and small-dose adjustment of the spray dust fall active agent solution are realized, and the problems that the traditional manual mixing is time-consuming and labor-consuming, and a constant delivery pump and air pressure addition are unstable are effectively solved.
2. The clean water stable supply system designed by the invention can realize continuous and stable supply of dust-falling water, and avoids the problem that stable power cannot be provided for a Venturi tube due to unstable water flow caused by water consumption in other places under a coal mine.
3. According to the active agent solution integrated preparation system for spraying and dust falling in the underground coal mine, different suction capacities are provided for the Venturi suction device by adjusting the rotating speed of the variable-frequency centrifugal pump, and meanwhile, the precise supply of active agents with different concentrations can be realized by controlling the electric control valve and combining with the numerical flow meter.
Drawings
FIG. 1 is a schematic diagram of an integrated preparation system of an active agent solution for spray dust fall in a coal mine;
in the figure, 1-a water supply pipeline, 2-an electric ball valve I, 3-a pressure-resistant rubber pipe I, 4-an electric ball valve II, 5-a pressure-resistant rubber pipe II, 6-a liquid level meter I, 7-a clear water storage tank, 8-a relay I, 9-a variable frequency centrifugal pump, 10-a pure active agent tank, 11-an electric regulating valve, 12-a numerical flow meter, 13-a Venturi suction device, 14-a relay II, 15-a static mixer, 16-an active agent solution storage tank, 17-a liquid level meter II, 18-a water filter, 19-a spray pressure pump and 20-a PLC (programmable logic controller).
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in figure 1, the integrated preparation system of the active agent solution for spray dust fall in the underground coal mine comprises a clear water stable supply system, an active agent quantitative negative pressure suction and mixing system, an active agent solution automatic pressurization system and a PLC (programmable logic controller).
The stable supply system of clear water include supply channel 1, electric ball valve I2, electric ball valve II 4, magnetic floating ball formula level gauge I6, clear water liquid reserve tank 7, relay I8, frequency conversion centrifugal pump 9, wherein adopt withstand voltage rubber tube I3 to combine together through mining quick-joint between supply channel 1, electric ball valve I2, the clear water liquid reserve tank 7, adopt withstand voltage rubber tube II 5 to combine together through mining quick-joint between supply channel 1, electric ball valve II 4, the clear water liquid reserve tank 7, magnetic floating ball formula level gauge I6 sets up in clear water liquid reserve tank 7, electric ball valve I2, electric ball valve II 4, magnetic floating ball formula level gauge I6, relay I8 adopt the terminal line to be connected with PLC controller 20 respectively, magnetic floating ball formula level gauge I6 is used for gathering the liquid level signal of corresponding position in clear water liquid reserve tank 7 and sends PLC controller 20 for, PLC controller 20 is after receiving the liquid level signal that magnetic floating ball formula level gauge I6 transmitted And the electric ball valve II 4 sends a control instruction, and the relay I8 controls the work of the variable frequency centrifugal pump 9 according to the control instruction of the PLC 20.
Active agent ration negative pressure suction and hybrid system include pure active agent case 10, venturi suction device 13, static mixer 15, venturi suction device 13's inlet passes through the export that frequency conversion centrifugal pump 9 is connected clear water liquid reserve tank 7, venturi suction device 13's suction opening passes through the export that pure active agent case 10 is connected to withstand voltage rubber tube, venturi suction device 13's leakage fluid dram passes through the entry that static mixer 15 is connected to withstand voltage rubber tube, still be provided with electrical control valve 11 and numerical flowmeter 12 between pure active agent case 10 and the venturi suction device 13, electrical control valve 11 and numerical flowmeter 12 adopt the terminal line to be connected with PLC controller 20 respectively.
The automatic active agent solution pressurization system comprises an active agent solution storage tank 16, a magnetic floating ball type liquid level meter II 17, a water quality filter 18, a spraying pressurization pump 19 and a relay II 14, wherein an outlet of the static mixer 15 is connected with the active agent solution storage tank 16, the water quality filter 18 and the spraying pressurization pump 19 are sequentially connected through pressure-resistant rubber pipes, the magnetic floating ball type liquid level meter II 17 is arranged in the active agent solution storage tank 16, the magnetic floating ball type liquid level meter II 17 and the relay II 14 are respectively connected with a PLC (programmable logic controller) 20 through terminal lines, the magnetic floating ball type liquid level meter II 17 is used for acquiring liquid level signals of corresponding positions in the active agent solution storage tank 16 and sending the liquid level signals to the PLC 20, the PLC 20 sends control instructions to the relay I8, the electric regulating valve 11 and the numerical flow meter 12 after receiving the liquid level signals transmitted by the magnetic floating ball type liquid level meter II 17, the relay II 14 controls the operation of the spray pressurizing pump 19 according to the control instruction of the PLC 20.
The flow range of the variable-frequency centrifugal pump 9 is 50-400L/min; the negative pressure suction range of the Venturi suction device 13 is less than or equal to 20L/h; the spray pressurizing pump 19 can adjust the pressure of the water for dust fall within the range of 0-20 MPa.
For safety production in a coal mine, the electric ball valve I2, the electric ball valve II 4, the magnetic floating ball type liquid level meter I6, the magnetic floating ball type liquid level meter II 17, the relay I8, the relay II 14, the variable frequency centrifugal pump 9, the electric regulating valve 11, the numerical flow meter 12 and the spray pressure pump 19 are all explosion-proof.
The working process is as follows:
when the underground coal mine excavation working face is mined, the relay II 14 controls the spray pressurizing pump 19 to work to pressurize the active agent solution for dust fall. When the solution quantity of the active agent solution storage tank 16 is lower than that of the magnetic floating ball type liquid level meter II 17, the magnetic floating ball type liquid level meter II 17 controls the opening of the relay I8 through the PLC 20, the relay I8 controls the variable frequency centrifugal pump 9 to work, the variable frequency centrifugal pump 9 extracts water solution from the clear water storage tank 7 to provide stable water supply quantity for the Venturi pumping device 13, the active agent in the stable negative pressure pumping pure active agent tank 10 is formed, small-dose adjustment is carried out through the electric regulating valve 11 and the numerical flow meter 12, uniform mixing of the active agent and clear water is achieved through the static mixer 15, then the prepared active agent solution enters the active agent solution storage tank 16, after the active agent solution does not pass through the magnetic floating ball type liquid level meter II 17, the electric signal of the active agent solution is transmitted to the PLC 20, and the relay I8 is closed. After the water yield in the clear water liquid reserve tank 7 is less than magnetic ball formula level gauge I6, its signal of telecommunication transmits PLC controller 20, and for the guarantee output is stable, open electronic ball valve I2 and electronic ball valve II 4 simultaneously, supply channel 1 supplies water to clear water liquid reserve tank 7, and the water level is higher than magnetic ball formula level gauge I6, and its signal of telecommunication transmits PLC controller 20, closes electronic ball valve I2 and electronic ball valve II 4 simultaneously. When the underground coal mine excavation working face is not mined, the PLC 20 controls the closing relay II 14 to close the spray pressure pump 19.
The first embodiment is as follows:
when the coal face of the underground coal mine normally cuts coal, the active agent dust-settling solution (with the concentration of 0.03 wt%) needs to be pressurized by 5MPa for spray dust-settling, and the water consumption is 200L/min. The method comprises the following specific steps: the frequency conversion centrifugal pump 9 is started to lead the flow rate to be 300L/min so as to ensure that the solution in the dust settling water tank can meet the requirement of spraying dust settling on the coal face, meanwhile, when water is supplied to the activator solution storage tank 16 at a rate of 300L/min in order to prepare an activator solution having a concentration of 0.03 wt%, the venturi suction device 13 is required to continuously achieve a stable supply of 5.4L/h from the pure active agent tank 10, by adjusting the electric control valve 11 and combining the reading of the numerical flow meter 12, the supply amount of the active agent in the Venturi suction device 13 is stabilized at 5.4L/h, the preparation of 0.03 wt% active agent solution is realized through a static mixer 15, the prepared active agent solution is supplied to an active agent solution storage tank 16 from the bottom (water flow impact foaming prevention), and finally the active agent solution is pressurized to 5MPa through a spray pressurizing pump 19 and conveyed to a working surface for spray dust settling.
Embodiment two:
when the coal face of the underground coal mine normally cuts coal, the active agent dust-settling solution (with the concentration of 0.05 wt%) needs to be pressurized at 6MPa for spray dust-settling, and the water consumption is 300L/min. The method comprises the following specific steps: the frequency conversion centrifugal pump 9 is started to lead the flow rate to be 400L/min so as to ensure that the solution in the dust settling water tank can meet the requirement of spraying dust settling on the coal face, meanwhile, when water is supplied to the activator solution storage tank 16 at a rate of 400L/min in order to prepare an activator solution with a concentration of 0.05 wt%, the venturi suction device 13 is required to continuously achieve a stable supply of 12L/h from the pure active agent tank 10, by adjusting the electric control valve 11 and combining the reading of the numerical flow meter 12, the supply amount of the active agent in the Venturi suction device 13 is stabilized at 12L/h, the preparation of 0.05 wt% active agent solution is realized through a static mixer 15, the prepared active agent solution is supplied to an active agent solution storage tank 16 from the bottom (water flow impact foaming prevention), and finally the active agent solution is pressurized to 6MPa through a spray pressurizing pump 19 and conveyed to a working surface for spray dust settling.
Claims (7)
1. An integrated preparation system of an active agent solution for spray dust fall in a coal mine is characterized by comprising a clear water stable supply system, an active agent quantitative negative pressure suction and mixing system, an active agent solution automatic pressurization system and a PLC (programmable logic controller);
the clean water stable supply system comprises a water supply pipeline (1), an electric ball valve I (2), an electric ball valve II (4), a liquid level meter I (6), a clean water liquid storage tank (7), a relay I (8) and a variable frequency centrifugal pump (9), wherein a pressure-resistant rubber pipe I (3) is adopted among the water supply pipeline (1), the electric ball valve I (2) and the clean water liquid storage tank (7) to be combined together through mining quick joint, a pressure-resistant rubber pipe II (5) is adopted among the water supply pipeline (1), the electric ball valve II (4) and the clean water liquid storage tank (7) to be combined together through mining quick joint, the liquid level meter I (6) is arranged in the clean water liquid storage tank (7), the electric ball valve I (2), the electric ball valve II (4), the liquid level meter I (6) and the relay I (8) are respectively connected with a PLC (20), the liquid level meter I (6) is used for collecting liquid level signals of corresponding positions in the clean water liquid storage tank (7) and sending the liquid level signals to the PLC (20), the PLC controller (20) sends control instructions to the electric ball valve I (2) and the electric ball valve II (4) after receiving a liquid level signal transmitted by the liquid level meter I (6), and the relay I (8) controls the work of the variable-frequency centrifugal pump (9) according to the control instructions of the PLC controller (20);
the active agent quantitative negative pressure suction and mixing system comprises a pure active agent box (10), a Venturi suction device (13) and a static mixer (15), wherein a liquid inlet of the Venturi suction device (13) is connected with an outlet of a clear water liquid storage box (7) through a variable frequency centrifugal pump (9), a suction port of the Venturi suction device (13) is connected with an outlet of the pure active agent box (10), a liquid discharge port of the Venturi suction device (13) is connected with an inlet of the static mixer (15), an electric regulating valve (11) and a numerical flow meter (12) are further arranged between the pure active agent box (10) and the Venturi suction device (13), and the electric regulating valve (11) and the numerical flow meter (12) are respectively connected with a PLC (20);
automatic pressurization system of active agent solution include active agent solution liquid reserve tank (16), level gauge II (17), quality of water filter (18), spraying force (forcing) pump (19) and relay II (14), the exit linkage of static mixer (15) active agent solution liquid reserve tank (16), quality of water filter (18), spraying force (forcing) pump (19) connect gradually, level gauge II (17) set up in active agent solution liquid reserve tank (16), level gauge II (17), relay II (14) are connected with PLC controller (20) respectively, level gauge II (17) are arranged in gathering the liquid level signal of corresponding position in active agent solution liquid reserve tank (16) and send PLC controller (20) for, PLC controller (20) are receiving the liquid level signal that level gauge II (17) transmitted to relay I (8), And the electric regulating valve (11) and the numerical flow meter (12) send out control instructions, and the relay II (14) controls the operation of the spray pressurizing pump (19) according to the control instructions of the PLC (20).
2. The system for integrally preparing the active agent solution for spray dust fall in the underground coal mine according to claim 1, wherein the pure active agent tank (10), the Venturi suction device (13) and the static mixer (15) are connected through a pressure-resistant rubber tube, and the active agent solution storage tank (16), the water filter (18) and the spray pressure pump (19) are connected through a pressure-resistant rubber tube.
3. The system for integrally preparing the active agent solution for spray dust fall in the underground coal mine according to claim 1, wherein the flow range of the variable frequency centrifugal pump (9) is 50-400L/min.
4. The system for integrally preparing the active agent solution for spray dust fall in the underground coal mine according to claim 1, wherein the negative pressure suction amount range of the Venturi suction device (13) is less than or equal to 20L/h.
5. The system for integrally preparing the active agent solution for spray dedusting in the underground coal mine according to claim 1, wherein the electric ball valve I (2) and the electric ball valve II (4) are opened or closed simultaneously.
6. The system for integrally preparing the activating agent solution for underground coal mine spraying and dust falling according to claim 1, wherein the electric ball valve I (2), the electric ball valve II (4), the liquid level meter I (6), the liquid level meter II (17), the relay I (8), the relay II (14), the variable frequency centrifugal pump (9), the electric regulating valve (11), the numerical flow meter (12) and the spraying pressure pump (19) are all explosion-proof.
7. The system for integrally preparing the active agent solution for spray dust fall in the underground coal mine according to claim 6, wherein the liquid level meter I (6) and the liquid level meter II (17) are both magnetic floating ball type liquid level meters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068361.XA CN112761707B (en) | 2021-01-19 | 2021-01-19 | Integrated preparation system of active agent solution for underground coal mine spraying dust fall |
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| CN202110068361.XA CN112761707B (en) | 2021-01-19 | 2021-01-19 | Integrated preparation system of active agent solution for underground coal mine spraying dust fall |
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| CN112761707B true CN112761707B (en) | 2022-02-08 |
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| CN114797335A (en) * | 2022-04-26 | 2022-07-29 | 太原科技大学 | Concentration-adjustable anti-freezing dust suppression spraying system for self-prepared liquid of large rock discharging machine |
| CN115898509A (en) * | 2022-11-25 | 2023-04-04 | 中国矿业大学 | Fully-mechanized mining working face active agent solution atomization closed dust source dust settling system |
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|---|---|---|---|---|
| CN102220877A (en) * | 2011-05-27 | 2011-10-19 | 山东科技大学 | Mine atomizing rotational flow dust collection fan |
| CN202851391U (en) * | 2012-08-28 | 2013-04-03 | 浙江工业大学 | Centrifugal pump control device |
| CN203463139U (en) * | 2013-07-31 | 2014-03-05 | 舒新前 | Pressure differential dust suppressant adding device |
| CN203584455U (en) * | 2013-11-15 | 2014-05-07 | 山西创蓝环保工程有限公司 | Foam dust suppression device |
| CN103967488A (en) * | 2014-03-31 | 2014-08-06 | 中国矿业大学 | Mining active magnetic water dust-settling method and system |
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2021
- 2021-01-19 CN CN202110068361.XA patent/CN112761707B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220877A (en) * | 2011-05-27 | 2011-10-19 | 山东科技大学 | Mine atomizing rotational flow dust collection fan |
| CN202851391U (en) * | 2012-08-28 | 2013-04-03 | 浙江工业大学 | Centrifugal pump control device |
| CN203463139U (en) * | 2013-07-31 | 2014-03-05 | 舒新前 | Pressure differential dust suppressant adding device |
| CN203584455U (en) * | 2013-11-15 | 2014-05-07 | 山西创蓝环保工程有限公司 | Foam dust suppression device |
| CN103967488A (en) * | 2014-03-31 | 2014-08-06 | 中国矿业大学 | Mining active magnetic water dust-settling method and system |
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