CN113027453B - Blowing-sucking coupling dust removing system of heading machine - Google Patents
Blowing-sucking coupling dust removing system of heading machine Download PDFInfo
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- CN113027453B CN113027453B CN202110372754.XA CN202110372754A CN113027453B CN 113027453 B CN113027453 B CN 113027453B CN 202110372754 A CN202110372754 A CN 202110372754A CN 113027453 B CN113027453 B CN 113027453B
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- 239000000428 dust Substances 0.000 title claims abstract description 143
- 230000008878 coupling Effects 0.000 title claims abstract description 15
- 238000010168 coupling process Methods 0.000 title claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 15
- 238000002955 isolation Methods 0.000 claims abstract description 35
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 9
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- 239000007921 spray Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 239000003595 mist Substances 0.000 description 6
- 239000002817 coal dust Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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- 238000000926 separation method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
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- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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- 206010035653 pneumoconiosis Diseases 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
- E21C35/223—Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a blowing-sucking coupling dust removal system of a heading machine, which belongs to the field of coal mine dust removal equipment, wherein a main body structure of the dust removal system is arranged on a shell at the tail end of a cutting part of the heading machine and swings along with the cutting part; the dust removing system comprises a negative pressure dust recycling and capturing device and a jet air curtain generating device; the jet air curtain generating device generates a high-pressure air curtain which is directed to the head end of the cutting part from the tail end of the cutting part and surrounds the cutting part, and a certain space around the cutting part is isolated from the external environment; thus, dust generated by the cutting part can be controlled in the isolation area; meanwhile, the negative pressure dust recovery and capture device in the isolation area forms negative pressure to suck dust in the isolation area into dust removing, filtering and dedusting equipment, and a better isolation dust removing system is formed by the two parts; the plurality of air inlets outside the isolation area and at the tail end of the cutting part can further inhibit dust from diffusing to the rear of the heading machine; the dust removal and the diffusion of dust during the work of the cutting part are effectively ensured by various prevention and control measures.
Description
Technical Field
The invention relates to the field of coal mine dust removal equipment, in particular to a blowing-sucking coupling dust removal system of a heading machine.
Background
In the process of underground coal mine tunneling and mining, a large amount of coal dust is generated by cutting broken coal blocks through a heading machine head, and the coal dust is accumulated in a closed working space to form high-concentration dust, so that the physical health of underground workers is seriously damaged, and pneumoconiosis is easily caused. At present, the treatment technology aiming at tunneling dust pollution mainly comprises atomization wet dust removal, ventilation dust removal, chemical dust removal and the like, but the existing dust removal method has certain defects. The invention independently develops a brand new dust removing system which is used for solving the problem that a large amount of coal dust is polluted when the heading machine works.
Disclosure of Invention
The invention aims to provide a blowing-sucking coupling dust removal system of a heading machine, which is used for solving the problem that a large amount of coal dust is polluted when the heading machine works.
The technical scheme adopted by the invention is as follows: the main structure of the dust removing system is arranged on a shell at the tail end of a cutting part of the heading machine and swings along with the cutting part; the dust removing system comprises a negative pressure dust recycling and capturing device and a jet air curtain generating device; the negative pressure dust recovery and capture device comprises a plurality of dust collection air openings, the dust collection air openings are uniformly arranged around the tail end of the cutting part in a surrounding manner, and the dust collection air openings face the head end of the cutting part; the dust collection air port is connected with a filtering and dedusting device arranged at the rear through an air duct, and the filtering and dedusting device is used for generating negative pressure to suck dust-containing gas in front of the dust collection air port; the jet air curtain generating device is used for generating a high-pressure air curtain which is directed to the head end of the cutting part from the tail end of the cutting part and surrounds the cutting part, and the high-pressure air curtain isolates a certain space around the cutting part from the external environment; the dust collection air port is positioned at the inner side of the high-pressure air curtain.
Preferably, the shell is in a cuboid shape and comprises a left mounting surface, a right mounting surface and an upper mounting surface; the negative pressure dust recovery and capture device comprises at least three cuboid dust collection air openings, wherein at least one dust collection air opening is respectively arranged on the left mounting surface and the right mounting surface of the shell; at least one dust collection air port is arranged on the upper mounting surface of the shell, and all the dust collection air ports face the head end of the cutting part.
Preferably, the jet air curtain generating device comprises a plurality of jet nozzles which are arranged outside the dust collection air port and are arranged around the tail end of the cutting part in a surrounding manner; the jet nozzle is connected with a rear air supply device through an air supply pipeline, the air supply device supplies high-pressure air for the jet nozzle, and the high-pressure air is sprayed out of the jet nozzle to form a planar air curtain.
Preferably, the outlet of the jet nozzle is a flat flaring structure, and the fan-shaped air curtain is sprayed out.
Further, a partition plate is arranged on the outward side face of the cuboid dust collection air port, the partition plate is comb-tooth-shaped when seen from the front side face and comprises an outer semi-rectangular part, a cavity structure can penetrate through a pipeline inside the semi-rectangular part, a front-back through cavity is formed inside the semi-rectangular part, and the inner side of the semi-rectangular part is divided into a plurality of front-back through subchambers by a plurality of condensing plates; jet nozzles are arranged on the front side surface of the semi-rectangular part and far from the edge of the dust collection air port.
Further, the jet nozzle on each mounting surface and the central line direction of the cutting part are provided with an outward eccentric angle A, and the eccentric angle A is 3-15 degrees.
Further, the two sides of the isolation plate are connected with the dust collection air port through the rotating connecting piece, and the isolation plate rotates around the rotating connecting piece to adjust the eccentric angle A.
Further, the air supply device comprises a fan cavity, the fan cavity is positioned at the rear of the jet nozzle, a blower is arranged in the fan cavity, and an air inlet which is positioned at the rear of the jet nozzle and is in a conical opening shape is formed in the fan cavity; the jet nozzle is connected to the air outlet of the fan chamber through an air supply pipeline.
Further, a dust removing filter is arranged in the filtering dust removing equipment, and the sucked air is discharged after being filtered; the filtering and dedusting equipment is arranged on the body of the heading machine and is positioned behind the cutting part.
In another design structure, the tail end of the cutting part is provided with a cylindrical shell, a plurality of dust collecting air openings are annularly arranged on the outer side of the shell, a circle of isolation plates are arranged on the outer side of the dust collecting air openings, a plurality of condensation plates are arranged between the isolation plates and the outer surfaces of the dust collecting air openings, and a circle of jet nozzles are uniformly distributed on the front annular surface of the isolation plates.
The invention has the beneficial effects that: in the blowing-sucking coupling dust removing system of the heading machine, the jet air curtain generating device generates a high-pressure air curtain which is directed to the head end of the cutting part from the tail end of the cutting part and surrounds the cutting part, and a certain space around the cutting part is isolated from the external environment; thus, dust generated by the cutting part can be controlled in the isolation area; meanwhile, the negative pressure dust recovery and capture device in the isolation area forms negative pressure to suck dust in the isolation area into dust removing, filtering and dedusting equipment, and a better isolation dust removing system is formed by the two parts. In addition, the plurality of air inlets outside the isolation area and at the tail end of the cutting part can further inhibit dust from diffusing to the rear of the heading machine. The dust removal and the diffusion of dust during the work of the cutting part are effectively ensured by various prevention and control measures.
Drawings
Fig. 1 is a schematic perspective view of a conventional heading machine.
Fig. 2 is a schematic view of a rectangular semi-enclosed structure of the dust collection tuyere in example 1.
Fig. 3 is a development view of the separator of example 1 in the form of a comb-teeth shape from the front side.
Fig. 4 is a view showing the air supply device in which the jet nozzle is connected to the rear side through the air supply duct in embodiment 1.
Fig. 5 is a schematic diagram of the connection structure of the jet nozzle and the air supply device on the right mounting surface.
Fig. 6 is a schematic diagram showing the flow direction of the air flow in a top view of the dust removing system of example 1.
Fig. 7 is a schematic diagram showing the flow direction of air in a side view when the dust removing system of example 1 is operated.
Fig. 8 is a schematic perspective view of a semi-enclosed air curtain formed around a cutting portion in embodiment 1.
Fig. 9 is a top view of the outlet of the jet nozzle of example 1 in a flat flared configuration.
FIG. 10 is an explanatory view showing the negative pressure dust recovery and capturing device and the jet air curtain generating device of example 2 in a fully enclosed structure.
Fig. 11 is a schematic view of the structure of the added mist nozzle.
In the figure: heading machine 1, cutting part 2, cutting part central line 2.1, casing 3, collection dirt wind gap 4, wind channel 5, division board 6, half rectangle portion 6.1, condensation plate 6.2, breach structure 6.3, jet nozzle 7, air supply pipeline 8, fan cavity 9, air intake 10, rotation connecting piece 11, eccentric angle A, water smoke nozzle 12.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The technical scheme of the invention is as follows: as shown in fig. 1, which is a schematic diagram of a three-dimensional structure of a conventional heading machine 1, a main structure of a blowing-sucking coupling dust removal system of the heading machine designed by the invention is arranged on a shell 3 at the tail end of a cutting part 2 of the heading machine 1 and swings along with the cutting part 2; the dust removing system mainly comprises a negative pressure dust recycling and capturing device and a jet air curtain generating device; the negative pressure dust recovery and capture device comprises a plurality of dust collection air openings 4, the dust collection air openings 4 are uniformly arranged around the tail end of the cutting part 2 in a surrounding mode, the surrounding mode can be semi-surrounding or full-surrounding, and the dust collection air openings 4 face to the head end of the cutting part 2.
In fig. 2, the dust collection tuyere 4 is shown as a rectangular semi-surrounding structure. Specifically, in this embodiment, the housing 3 is in a cuboid shape, and includes three mounting surfaces, i.e., a left mounting surface, a right mounting surface and an upper mounting surface; the negative pressure dust recovery and capture device comprises four cuboid dust collection air openings 4, wherein the left and right mounting surfaces of the shell 3 are respectively provided with one dust collection air opening 4, and the left and right sides are symmetrical; two dust collection air openings 4 are arranged on the upper mounting surface of the shell 3 side by side, and all the dust collection air openings 4 face the head end of the cutting part 2; the dust collection air port 4 is connected with filtering dust removal equipment arranged at the rear through an air duct 5, and the air duct 5 is preferably a hose; the filtering dust removing equipment is used for generating negative pressure to suck dust-containing gas in front of the dust collecting air port 4, and the dust-containing gas is discharged after being filtered by a filter in the filtering dust removing equipment; the filtering and dedusting device can be installed on the body of the heading machine 1 and located behind the cutting part 2 (not shown in the figure), and the specific structure of the filtering and dedusting device is in the prior art and is not repeated here.
Next, the jet air curtain generating device in the present invention is used for generating a high-pressure air curtain which is directed from the tail end of the cutting part 2 to the head end of the cutting part 2 and surrounds the cutting part 2, and isolating a certain space around the cutting part 2 from the external environment, and the core structure is a plurality of jet nozzles 7 which are arranged outside the dust collection air port 4 and are arranged in a surrounding manner around the tail end of the cutting part 2.
Fig. 2 shows a schematic view of a rectangular semi-encircling arrangement of a plurality of jet nozzles 7. Specifically, the side surface of the cuboid dust collection tuyere 4 facing outwards is provided with a separation plate 6, the separation plate 6 is comb-tooth-shaped (as shown in fig. 3) from the front side surface, the dust collection tuyere comprises an outer half rectangular part 6.1, a cavity structure is arranged inside the half rectangular part 6.1 and can penetrate through a pipeline, the inner side of the half rectangular part 6.1 is a cavity which is penetrated from front to back, and the inner side of the half rectangular part 6.1 is divided into a plurality of sub cavities which are penetrated from front to back by a plurality of condensation plates 6.2; the condensation plate 6.2 is preferably an aluminum alloy condensation plate, and the isolation plate 6 can be made into a whole; the jet nozzles 7 are arranged on the separating plate 6, for example, as shown in fig. 2, one separating plate 6 is arranged on each of the upper surfaces of the two dust collecting air openings 4 on the upper mounting surface, and eight jet nozzles 7 are uniformly distributed on the upper edge of the front surface of the separating plate 6 at equal intervals along the length direction (left-right direction); a partition plate 6 is arranged on the right side surface of a dust collection air port 4 on the right side mounting surface, and four jet nozzles 7 are uniformly distributed on the right side edge of the front surface of the partition plate 6 at equal intervals along the length direction (up-down direction); the structure of the isolation plate 6 on the left dust collection air port 4 is symmetrical with that of the right side; the 16 jet nozzles 7 surround the tail end of the cutting part 2 and are in a rectangular semi-surrounding shape.
The function of the partition plate 6 is two, one is to fix the jet nozzle 7; secondly, the jet nozzle 7 is at a certain distance from the dust collection air port 4, and the distance is preferably 10cm-30cm, so that the design aims to reduce the influence on the inner suction of the inner dust collection air port 4 when the jet nozzle 7 sprays a high-pressure air curtain.
Next, as shown in fig. 4, the jet nozzle 7 is connected to a rear air supply device through an air supply pipe 8, the air supply device supplies high-pressure air to the jet nozzle 7, and the high-pressure air is ejected from the jet nozzle 7 to form a planar air curtain; specifically, the air supply device comprises a fan chamber 9, a blower (not shown) is arranged in the fan chamber 9, and a conical air inlet 10 is arranged on the fan chamber 9; as shown in fig. 2 and 4, on the upper mounting surface, two adjacent jet nozzles 7 share an air supply pipeline 8, the rear end of the air supply pipeline 8 is connected to the air outlet of the fan chamber 9, and the four fan chambers 9 share an upper air inlet 10 which is opened upwards; the top air inlet 10 can suck air in the space above the tail end of the cutting part 2, and further prevent generated dust from diffusing to the rear of the heading machine 1. As shown in fig. 5, on the right-side mounting surface, the upper two jet nozzles 7 share one air supply duct 8, and the lower two jet nozzles 7 share one air supply duct 8; the rear end of each air supply pipeline 8 is respectively connected with a fan cavity 9, the upper fan cavity 9 is provided with an air inlet 10 with an upward opening, the lower fan cavity 9 is provided with an air inlet 10 with a downward opening, and the two air inlets 10 suck air in the right space at the tail end of the cutting part 2 from the upper and lower directions, so that generated dust is further prevented from diffusing to the rear of the heading machine 1; the left mounting surface and the right mounting surface are symmetrical in structure; five air inlets 10 in the air supply device form a second dust diffusion barrier.
Further improvement, in this embodiment, the jet nozzles 7 on each mounting surface and the direction of the center line 2.1 of the cutting part have an outward eccentric angle a, and the eccentric angle a is preferably 3 ° -15 °, as shown in fig. 6, which is a schematic diagram of airflow direction in a top view state when the dust removing system of this embodiment is operated, wherein the jet nozzles 7 on the left and right mounting surfaces are biased outwards by 3 °; FIG. 7 is a schematic diagram showing the flow direction of air in a side view when the dust removing system of the present embodiment is operated; the jet nozzle 7 on the upper mounting surface is biased upwards by 3 degrees; as shown in fig. 8, a schematic perspective view of a semi-surrounding air curtain formed around the cutting portion 2 is shown, the air curtain is composed of three surfaces, i.e. an upper surface, a left surface and a right surface, and the air curtain is sprayed out by a jet nozzle 7 at the tail end of the cutting portion 2, extends towards the head end of the cutting portion 2 and gradually expands outwards.
Further improved, the eccentric angle A can be adjusted by a rotating mechanism, the specific structure is shown in figure 5, and two sides of the isolation plate 6 are connected with the dust collection air port 4 by rotating connecting pieces 11; as shown in fig. 5, the rear lower corners of the left side surface and the right side surface of the isolation plate 6 on the upper mounting surface are of a notch structure 6.3, the rotary connecting piece 11 is arranged on the contact surface between the notch structure 6.3 and the upper surface of the dust collection tuyere 4, the eccentric angle A of the isolation plate 6 is 0 degrees in the state shown in fig. 5, the jet nozzle 7 is parallel to the central line 2.1 direction of the cutting part, the isolation plate 6 rotates upwards around the rotary connecting piece 11, the eccentric angle A gradually increases, and thus the air curtain formed by the jet nozzle 7 expands upwards; similarly, the left and right partition plates 6 are of the same rotatable structure, and the purpose of this design is that the space enclosed by the formed semi-enclosed air curtain can be enlarged or reduced.
Further, the description about the jet nozzle 7 is as follows: if the jet nozzle 7 is to obtain a better isolation effect, two layout forms exist; the first is that the number of the jet nozzles 7 is large and dense, for example, more jet nozzles 7 are arranged on the partition plate 6 on the upper mounting surface, and the distance between the adjacent jet nozzles 7 is small, so that the formed air curtain can be one surface; the second is to use an expansion type jet nozzle 7, as shown in fig. 9, the outlet of the jet nozzle 7 is a flat flaring structure, and the fan-shaped air curtain is sprayed by high-pressure air and overlapped with each other; the advantage of using such jet nozzles 7 is that a better insulation effect can be achieved with a smaller number of jet nozzles 7.
The working principle of the dust removing system of the invention is as follows:
in the system, a jet air curtain generating device generates a high-pressure air curtain which is directed to the head end of the cutting part 2 from the tail end of the cutting part 2 and surrounds the cutting part 2, and a certain space around the cutting part 2 is isolated from the external environment; so that dust generated by the cutting part 2 can be controlled in the isolation area; meanwhile, the negative pressure dust recovery and capture device in the isolation area forms negative pressure to suck dust in the isolation area into dust removing, filtering and dedusting equipment, and a better isolation dust removing system is formed by the two parts. In addition, the plurality of air inlets 10 at the tail end of the cutting portion 2 outside the isolation region can further suppress dust from spreading rearward of the heading machine 1. The dust diffusion problem of the cutting part 2 during working is effectively guaranteed by various prevention and control measures.
Example 2
Fig. 10 is a view showing the negative pressure dust recovery and capture device and the jet air curtain generating device in a fully enclosed structure. The tail end of the cutting part 2 is provided with a cylindrical shell 3, a plurality of dust collecting air openings 4 are annularly arranged outside the shell 3, a circle of isolation plates 6 are arranged outside the dust collecting air openings 4, a plurality of condensation plates 6.2 are arranged between the isolation plates 6 and the outer surfaces of the dust collecting air openings 4, and a circle of jet nozzles 7 are uniformly distributed on the front annular surface of the isolation plates 6.
Further, as shown in fig. 11, a water mist nozzle can be additionally arranged between the adjacent jet nozzles 7, the water mist nozzle is connected with a rear mist making device (the prior art), and a mist curtain wall is formed by coupling water mist and air; the dust removal effect can be further improved.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. The main structure of the dust removing system is arranged on a shell at the tail end of a cutting part of the heading machine and swings along with the cutting part; the dust removing system is characterized by comprising a negative pressure dust recycling and capturing device and a jet air curtain generating device; the negative pressure dust recovery and capture device comprises a plurality of dust collection air openings, the dust collection air openings are uniformly arranged around the tail end of the cutting part in a surrounding manner, and the dust collection air openings face the head end of the cutting part; the dust collection air port is connected with a filtering and dedusting device arranged at the rear through an air duct, and the filtering and dedusting device is used for generating negative pressure to suck dust-containing gas in front of the dust collection air port; the jet air curtain generating device is used for generating a high-pressure air curtain which is directed to the head end of the cutting part from the tail end of the cutting part and surrounds the cutting part, and the high-pressure air curtain isolates a certain space around the cutting part from the external environment; the dust collection air port is positioned at the inner side of the high-pressure air curtain; the jet air curtain generating device comprises a plurality of jet nozzles which are arranged outside the dust collection air port and are arranged around the tail end of the cutting part in a surrounding manner; the jet nozzle is connected with a rear air supply device through an air supply pipeline, the air supply device supplies high-pressure air for the jet nozzle, and the high-pressure air is sprayed out of the jet nozzle to form a planar air curtain; the dust collection air port is provided with a partition plate on the outward side surface, the partition plate is comb-tooth-shaped when seen from the front side surface and comprises an external semi-rectangular part, a cavity structure is arranged in the semi-rectangular part and can penetrate through a pipeline, the inner side of the semi-rectangular part is a cavity which is penetrated front and back, and the inner side of the semi-rectangular part is divided into a plurality of sub cavities which are penetrated front and back by a plurality of condensing plates; jet nozzles are arranged on the front side surface of the semi-rectangular part and far from the edge of the dust collection air port.
2. The tunneling machine blowing-sucking coupling dust removal system according to claim 1, wherein: the shell is cuboid and comprises a left mounting surface, a right mounting surface and an upper mounting surface; the negative pressure dust recovery and capture device comprises at least three cuboid dust collection air openings, wherein at least one dust collection air opening is respectively arranged on the left mounting surface and the right mounting surface of the shell; at least one dust collection air port is arranged on the upper mounting surface of the shell, and all the dust collection air ports face the head end of the cutting part.
3. The tunneling machine blowing-sucking coupling dust removal system according to claim 2, wherein: the outlet of the jet nozzle is a flat flaring structure and sprays out a fan-shaped air curtain.
4. A tunneling machine blowing-sucking coupling dust removal system according to claim 3 and characterized in that: the jet nozzle on each mounting surface and the central line direction of the cutting part are provided with an outward eccentric angle A, and the eccentric angle A is 3-15 degrees.
5. The tunneling machine blowing-sucking coupling dust removal system according to claim 4, wherein: the two sides of the isolation plate are connected with the dust collection air port through the rotary connecting piece, and the isolation plate rotates around the rotary connecting piece to adjust the eccentric angle A.
6. The tunneling machine blowing-sucking coupling dust removal system according to any one of claims 3-5, wherein: the air supply device comprises a fan cavity, wherein the fan cavity is positioned at the rear of the jet flow nozzle, a blower is arranged in the fan cavity, and an air inlet which is positioned at the rear of the jet flow nozzle and is in a conical opening shape is formed in the fan cavity; the jet nozzle is connected to the air outlet of the fan chamber through an air supply pipeline.
7. The tunneling machine blowing-sucking coupling dust removal system according to claim 6, wherein: the dust removing filter is arranged in the filtering dust removing equipment, and the sucked air is discharged after being filtered; the filtering and dedusting equipment is arranged on the body of the heading machine and is positioned behind the cutting part.
8. The tunneling machine blowing-sucking coupling dust removal system according to claim 1, wherein: the tail end of the cutting part is provided with a cylindrical shell, a plurality of dust collecting air openings are annularly arranged on the outer side of the shell, a circle of isolation plates are arranged on the outer side of the dust collecting air openings, a plurality of condensation plates are arranged between the isolation plates and the outer surfaces of the dust collecting air openings, and a circle of jet nozzles are uniformly distributed on the front annular surface of the isolation plates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372754.XA CN113027453B (en) | 2021-04-07 | 2021-04-07 | Blowing-sucking coupling dust removing system of heading machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372754.XA CN113027453B (en) | 2021-04-07 | 2021-04-07 | Blowing-sucking coupling dust removing system of heading machine |
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| Publication Number | Publication Date |
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| CN113027453A CN113027453A (en) | 2021-06-25 |
| CN113027453B true CN113027453B (en) | 2023-05-23 |
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| CN200961482Y (en) * | 2006-10-24 | 2007-10-17 | 阜新基蓝矿山安全工程有限公司 | Fully-excavated face wind curtain dust-collecting dust-removing system |
| CN107387153A (en) * | 2017-08-15 | 2017-11-24 | 中国煤炭科工集团太原研究院有限公司 | A kind of driving face concurrent flow air curtain orients dust collect plant |
| CN107355252A (en) * | 2017-08-23 | 2017-11-17 | 黑龙江工业学院 | A kind of fully mechanized workface air curtain dust-collecting dedusting system |
| CN110469360B (en) * | 2019-08-15 | 2020-09-08 | 湖南科技大学 | Fully-mechanized excavation working face radial rotational flow shielding ventilation system |
| CN111364990B (en) * | 2020-03-31 | 2021-11-02 | 辽宁工程技术大学 | Vortex air curtain conversion device |
| CN212508400U (en) * | 2020-05-15 | 2021-02-09 | 中国矿业大学 | Mine driving face dust removal device |
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