CN111852539B - Negative-pressure drainage low-temperature dust settling system and method for fully mechanized coal mining face - Google Patents
Negative-pressure drainage low-temperature dust settling system and method for fully mechanized coal mining face Download PDFInfo
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- CN111852539B CN111852539B CN202010746870.9A CN202010746870A CN111852539B CN 111852539 B CN111852539 B CN 111852539B CN 202010746870 A CN202010746870 A CN 202010746870A CN 111852539 B CN111852539 B CN 111852539B
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- outer shell
- negative pressure
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- 239000000428 dust Substances 0.000 title claims abstract description 96
- 238000005065 mining Methods 0.000 title claims abstract description 22
- 239000003245 coal Substances 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 11
- 238000001914 filtration Methods 0.000 claims abstract description 35
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 239000010865 sewage Substances 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 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
- E21F3/00—Cooling or drying of air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
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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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
The invention discloses a negative pressure drainage low-temperature dust falling system for a fully mechanized mining face, which comprises an air inlet cover, wherein an outer shell is detachably arranged on the air inlet cover, a bottom support is detachably arranged on the outer shell, a dust filtering support is arranged on the outer shell in an interference fit manner, a detachable negative pressure spraying device is horizontally arranged on the outer shell, the air inlet cover is positioned above the negative pressure spraying device, a cold air spray head is arranged on the dust filtering support, the air inlet cover comprises two air inlet faces which are perpendicular to each other, air inlets which are distributed in an array manner are arranged on the air inlet faces, the outer shell comprises a square frame body, a sewage discharge face is arranged in the square frame body, and sewage discharge ports which are distributed in an array manner are arranged on the sewage discharge face. The movement direction of a flow field which is formed when the negative pressure drainage low-temperature dust settling system works and is vertical to the horizontal plane is the same as the gravity direction, and the cooling and humidifying technology in the upper closed space is matched, so that the spraying and dust settling effect is obviously improved; the problems of dust escape and poor dust catching effect of spraying dust fall in an open space are avoided.
Description
Technical Field
The invention relates to the technical field of coal mine dust treatment, in particular to a fully mechanized coal mining face negative pressure drainage low-temperature dust settling system and method.
Background
In the coal mine production process, the fully mechanized coal mining face is a main production source and a personnel operation area, and along with the increasing mechanization degree of coal mining, the dust control problem of the fully mechanized coal mining face is more serious. The existing dust treatment technology and equipment are difficult to meet the national requirements on safety production, and high-concentration dust can also harm the health of constructors, so that the design of a high-efficiency dust settling system becomes a matter which has to be considered.
The existing fully mechanized coal mining face dust fall technology mainly comprises: coal mining machine spraying, hydraulic support spraying, coal seam water injection, air curtain dust separation and the like. However, the above measures have the following problems: these measures are carried out in the open space where the fully mechanized face is located, and most of the measures are to capture and settle dust in the open space by using spray, which enters the bottleneck period at present for the following reasons: if the particle size of the spray droplets is too small, the spray droplets are evaporated before the spray droplets can not effectively capture dust, so that dust can not be effectively settled, and the evaporation airflow can be generated to influence the sedimentation of dust particles; if the spray droplets are too large, the dust will be influenced by the gas flow and will bypass the droplet motion and be more difficult to catch.
Disclosure of Invention
The invention aims to provide a negative-pressure drainage low-temperature dust-settling system and method for a fully mechanized mining face, wherein the movement direction of a flow field which is formed when the system works and is vertical to the horizontal plane is the same as the gravity direction, and the effect of spraying dust settling is obviously improved by matching with a cooling and humidifying technology in an upper closed space; the problems of dust escape and poor dust catching effect of spraying dust fall in an open space are avoided.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a combine and adopt working face negative pressure drainage low temperature dust fall system, low temperature dust fall system includes the air inlet cover, the air inlet covers to be equipped with can dismantling and is equipped with the shell body, can dismantle on the shell body and be equipped with the bottom support, and interference fit has the dirt support of straining on the shell body, and horizontal installation has detachable negative pressure atomizer on the shell body, and the air inlet cover is located negative pressure atomizer's top, strains and is equipped with the air conditioning shower nozzle on the dirt support.
The air inlet cover comprises two air inlet surfaces which are vertical to each other, and air inlets which are distributed in an array mode are arranged on the air inlet surfaces.
The shell body comprises a square frame body, wherein a sewage discharge surface is arranged in the square frame body, and sewage discharge ports distributed in an array mode are arranged on the sewage discharge surface.
The dust filtering support comprises a horizontal dust filtering surface, and dust filtering ports distributed in an array mode are arranged on the dust filtering surface.
The negative pressure spraying device comprises an outer support frame, the outer support frame comprises a top mounting plate, vent holes are formed in the outer support frame in a penetrating mode, high-pressure spray heads are distributed in an array mode below the outer support frame, and a negative pressure fan is arranged in the outer support frame.
Furthermore, both ends of the air inlet surface are provided with sealing plates, the air inlet surface and the sealing plates form a pentahedral structure, and the included angle between the air inlet surface and the ground is 45 degrees.
Furthermore, a matching groove is formed in one end port of the square frame body, the sewage discharge surface and the matching groove are respectively located at two ends of the square frame body, the outer shell is fixed on the bottom support through the square frame body, and the sewage discharge surface is in contact with the bottom support.
Furthermore, the below of straining the dirt face is equipped with the supporting fixed plate of symmetric distribution, strains the dirt support and passes through the supporting fixed plate block in square frame, strains dirt mouth and drain mutually perpendicular on the horizontal direction, and the air conditioning shower nozzle is fixed on straining the dirt face.
Furthermore, the negative pressure fan is composed of a rotating shaft motor and fan blades, and the rotating shaft motor is a mining explosion-proof motor.
Furthermore, the negative pressure spraying device is clamped in the matching groove through a top mounting plate.
Furthermore, a closed cavity is formed among the negative pressure spraying device, the dust filtering support and the outer shell.
A negative pressure drainage low-temperature dust settling method for a fully mechanized coal mining face comprises the following steps:
the method comprises the following steps: opening the cold air nozzle, injecting low-temperature air with the temperature lower than 10 ℃ into the closed cavity, and keeping the cold air nozzle in an open state all the time during working;
step two: starting a high-pressure spray head in the negative-pressure spraying device, adjusting to proper water pressure, and keeping the high-pressure spray head in an open state all the time during working;
step three: and starting a negative pressure fan in the negative pressure spraying device, sucking dust airflow through the air inlet cover, enabling the dust to enter the closed cavity, settling the dust to a dust filtering surface after the dust is subjected to spraying humidification and cooled by cold air, then flowing to a sewage discharge surface through the dust filtering port, and finally remaining to the ground through the sewage discharge port.
The invention has the beneficial effects that:
the movement direction of a flow field which is formed when the negative pressure drainage low-temperature dust settling system works and is vertical to the horizontal plane is the same as the gravity direction, and the cooling and humidifying technology in the upper closed space is matched, so that the spraying and dust settling effect is obviously improved; the problems of dust escape and poor dust catching effect in spraying dust fall in an open space are avoided.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a negative pressure drainage low temperature dustfall system of the present invention;
FIG. 2 is a schematic view of the structure of the air inlet cover of the present invention;
FIG. 3 is a schematic structural diagram of the outer casing of the present invention;
FIG. 4 is a schematic view of the dust filter holder of the present invention;
fig. 5 is a schematic structural diagram of the negative pressure spraying device of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The utility model provides a combine and adopt working face negative pressure drainage low temperature dust fall system, low temperature dust fall system includes air inlet cover 1, as shown in figure 1, can dismantle on the air inlet cover 1 and be equipped with shell body 2, can dismantle on the shell body 2 and be equipped with bottom support 3, interference fit has dust filter support 4 on the shell body 2, and shell body 2 is gone up horizontal installation has detachable negative pressure atomizer 6, and air inlet cover 1 is located negative pressure atomizer 6's top, is equipped with air conditioning shower nozzle 5 on the dust filter support 4.
The air inlet cover 1 comprises two air inlet surfaces 101 which are perpendicular to each other, as shown in fig. 2, air inlets 102 which are distributed in an array manner are arranged on the air inlet surfaces 101, sealing plates 103 are arranged at two ends of the air inlet surfaces 101, the air inlet surfaces 101 and the sealing plates 103 form a pentahedron structure, and an included angle between each air inlet surface 101 and the ground is 45 degrees.
The outer shell 2 comprises a square frame 203, as shown in fig. 3, a sewage discharge surface 202 is arranged in the square frame 203, sewage discharge ports 201 distributed in an array are arranged on the sewage discharge surface 202, a matching groove 204 is arranged on one end port of the square frame 203, the sewage discharge surface 202 and the matching groove 204 are respectively located at two ends of the square frame 203, the outer shell 2 is fixed on the bottom bracket 3 through the square frame 203, and the sewage discharge surface 202 is in contact with the bottom bracket 3.
The dust filtering support 4 comprises a horizontal dust filtering surface 402, as shown in fig. 4, dust filtering openings 401 distributed in an array manner are formed in the dust filtering surface 402, a supporting and fixing plate 403 distributed symmetrically is arranged below the dust filtering surface 402, the dust filtering support 4 is clamped in a square frame body 203 through the supporting and fixing plate 403, the dust filtering openings 401 and the sewage draining openings 201 are perpendicular to each other in the horizontal direction, dust is collected in a mutually matched manner, and the cold air spray head 5 is fixed on the dust filtering surface 402.
The negative pressure spraying device 6 comprises an outer support frame 601, as shown in fig. 5, the outer support frame 601 comprises a top mounting plate 605, vent holes 606 are arranged on the outer support frame 601 in a penetrating manner, high pressure spray heads 602 distributed in an array manner are arranged below the outer support frame 601, a negative pressure fan is arranged in the outer support frame 601, the negative pressure fan is composed of a rotating shaft motor 603 and fan blades 604, the horizontal mounting mode ensures that the fan forms a flow field which is vertical to the horizontal plane from top to bottom during operation, and the rotating shaft motor 603 is a mining explosion-proof motor.
The negative pressure sprayer 6 is engaged with the engagement groove 204 by the top attachment plate 605.
A closed cavity is formed among the negative pressure spraying device 6, the dust filtering bracket 4 and the outer shell 2.
A negative pressure drainage low-temperature dust settling method for a fully mechanized coal mining face comprises the following steps:
the method comprises the following steps: opening the cold air spray head 5, injecting low-temperature air with the temperature lower than 10 ℃ into the closed cavity, and keeping the cold air spray head 5 in an open state all the time during working;
step two: starting a high-pressure spray head 602 in the negative-pressure spraying device 6, adjusting to a proper water pressure, and keeping the high-pressure spray head 602 in an open state all the time during working;
step three: and starting a negative pressure fan in the negative pressure spraying device 6, sucking dust airflow through the air inlet cover, enabling the dust to enter the closed cavity, settling the dust to a dust filtering surface 402 after the dust is subjected to spraying humidification and cooled by cold air, then flowing to the sewage discharge surface 202 through the dust filtering port 401, and finally remaining to the ground through the sewage discharge port 201.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. A fully mechanized coal mining face negative pressure drainage low-temperature dust fall system comprises an air inlet cover (1) and is characterized in that an outer shell (2) is detachably arranged on the air inlet cover (1), the outer shell (2) is located below the air inlet cover (1), a bottom support (3) is detachably arranged on the outer shell (2), a dust filtering support (4) is in interference fit with the outer shell (2), a detachable negative pressure spraying device (6) is horizontally arranged on the outer shell (2), the air inlet cover (1) is located above the negative pressure spraying device (6), the dust filtering support (4) is located below the negative pressure spraying device (6), and a cold air spray head (5) is arranged on the dust filtering support (4);
the air inlet cover (1) comprises two air inlet surfaces (101) which are perpendicular to each other, and air inlets (102) which are distributed in an array mode are formed in the air inlet surfaces (101);
the outer shell (2) comprises a square frame body (203), the square frame body (203) is positioned at the bottom of the dust filtering support (4), a sewage discharge surface (202) is arranged in the square frame body (203), and sewage discharge ports (201) distributed in an array mode are arranged on the sewage discharge surface (202);
the dust filtering support (4) comprises a horizontal dust filtering surface (402), and dust filtering ports (401) distributed in an array manner are arranged on the dust filtering surface (402);
the negative pressure spraying device (6) comprises an outer support frame (601), the outer support frame (601) comprises a top mounting plate (605), vent holes (606) penetrate through the outer support frame (601), high-pressure spray heads (602) distributed in an array mode are arranged below the outer support frame (601), and negative pressure fans are arranged in the outer support frame (601).
2. The negative-pressure drainage low-temperature dust suppression system for the fully mechanized coal mining face according to claim 1, wherein sealing plates (103) are arranged at two ends of the air inlet face (101), the air inlet face (101) and the sealing plates (103) form a pentahedron structure, and an included angle between the air inlet face (101) and the ground is 45 degrees.
3. The negative-pressure drainage low-temperature dust settling system for the fully mechanized mining face of claim 1, wherein a fitting groove (204) is formed in one end port of the square frame body (203), the sewage draining face (202) and the fitting groove (204) are respectively located at two ends of the square frame body (203), the outer shell (2) is fixed on the bottom support (3) through the square frame body (203), and the sewage draining face (202) is in contact with the bottom support (3).
4. The negative-pressure drainage low-temperature dust fall system for the fully mechanized mining face of claim 1, wherein symmetrically distributed supporting and fixing plates (403) are arranged below the dust filtering face (402), the dust filtering support (4) is clamped in a square frame body (203) through the supporting and fixing plates (403), a dust filtering opening (401) and a sewage outlet (201) are perpendicular to each other in the horizontal direction, and a cold air nozzle (5) is fixed on the dust filtering face (402).
5. The negative-pressure drainage low-temperature dust settling system for the fully mechanized mining face of claim 1, wherein the negative-pressure fan is composed of a rotating shaft motor (603) and fan blades (604), and the rotating shaft motor (603) is a mining explosion-proof motor.
6. The negative-pressure drainage low-temperature dust settling system for the fully mechanized mining face of claim 3, wherein the negative-pressure spraying device (6) is clamped in the matching groove (204) through a top mounting plate (605).
7. The negative-pressure drainage low-temperature dust settling system for the fully mechanized mining face of claim 1, wherein a closed cavity is formed among the negative-pressure spraying device (6), the dust filtering support (4) and the outer shell (2).
8. The dust settling method adopting the negative pressure drainage low-temperature dust settling system of any one of claims 1 to 7, wherein the dust settling method comprises the following steps:
the method comprises the following steps: opening the cold air spray head (5), injecting low-temperature air with the temperature lower than 10 ℃ into the closed cavity, and keeping the cold air spray head (5) in an open state all the time during working;
step two: starting a high-pressure spray head (602) in the negative-pressure spraying device (6), adjusting to a proper water pressure, and keeping the high-pressure spray head (602) in an open state all the time when working;
step three: and starting a negative pressure fan in the negative pressure spraying device (6), sucking dust airflow through the air inlet cover, enabling the dust to enter the closed cavity, enabling the dust to settle to a dust filtering surface (402) after spraying humidification and cold air cooling, then flowing to a sewage discharge surface (202) through a dust filtering port (401), and finally remaining to the ground through a sewage discharge port (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746870.9A CN111852539B (en) | 2020-07-29 | 2020-07-29 | Negative-pressure drainage low-temperature dust settling system and method for fully mechanized coal mining face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746870.9A CN111852539B (en) | 2020-07-29 | 2020-07-29 | Negative-pressure drainage low-temperature dust settling system and method for fully mechanized coal mining face |
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| Publication Number | Publication Date |
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| CN111852539A CN111852539A (en) | 2020-10-30 |
| CN111852539B true CN111852539B (en) | 2022-10-14 |
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| CN202010746870.9A Active CN111852539B (en) | 2020-07-29 | 2020-07-29 | Negative-pressure drainage low-temperature dust settling system and method for fully mechanized coal mining face |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204212799U (en) * | 2014-09-28 | 2015-03-18 | 天津市武清区翔顺防腐制品厂 | The directed dedusting fan of a kind of mine |
| CN206018895U (en) * | 2016-08-25 | 2017-03-15 | 江苏德顺纺织有限公司 | Air for air conditioning in textile factories cooling damping device |
| CN107321073A (en) * | 2017-09-07 | 2017-11-07 | 苏州绣薇纺织整理自动化有限公司 | A kind of textile machinery high effect dust cleaner |
| CN109798599B (en) * | 2017-11-15 | 2021-04-16 | 大连兆和环境科技股份有限公司 | Networking replacement type recirculation ventilation cluster system |
| CN108488935B (en) * | 2018-02-28 | 2020-11-03 | 抚州锦溪农业发展有限公司 | Filtering, sterilizing and air supplying device with temperature and humidity adjusting function |
| CN108843370A (en) * | 2018-05-24 | 2018-11-20 | 甘肃省治沙研究所 | A kind of mining high efficiency device for reducing dust |
| CN110743300A (en) * | 2019-10-10 | 2020-02-04 | 龙礼杰 | Dust treatment device for wood working |
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