CN216642190U - Coal dust and gas removing device for mining pneumatic drill - Google Patents
Coal dust and gas removing device for mining pneumatic drill Download PDFInfo
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- CN216642190U CN216642190U CN202220173960.8U CN202220173960U CN216642190U CN 216642190 U CN216642190 U CN 216642190U CN 202220173960 U CN202220173960 U CN 202220173960U CN 216642190 U CN216642190 U CN 216642190U
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The utility model provides a coal dust and gas removing device for a mining pneumatic drill, which comprises a collecting device, a coal dust collector and a gas coal dust separator, wherein the collecting device, the coal dust collector and the gas coal dust separator are communicated through an extraction pipe, a gas injection pipe is connected between the collecting device and the gas coal dust separator, and the coal dust collector is positioned below the collecting device and is communicated with the collecting device through a coal dust pipe. The air injection ports and the air suction ports are arranged around the drill rod, so that gas generated by drilling is extracted in time, pulverized coal is collected and separated in time, a dry separation technology is adopted, no water vapor is generated, the separation effect is good, the gas extraction efficiency is high, the dust removal effect is good, the gas does not exceed the limit, wind power is adopted as a power source, and the trouble that special electrician needs to take lead before equipment is started is reduced; the dust is separated and then is treated in a centralized mode, the workload of cleaning the roadway after the drilling construction is finished is reduced, the operation is simple, and the efficiency is higher.
Description
Technical Field
The utility model belongs to the technical field of coal mine safety equipment, and particularly relates to a coal dust and gas removing device for a mining pneumatic drill.
Background
Coal dust is a great hazard to the production and safety construction of mines and the health of coal miners. Drilling is one of the most common methods for gas treatment, and coal seam gas is often extracted and gas related parameters are determined by drilling. And the drilling is divided into a water drill and an air drill, the water drill can form accumulated water, coal powder slurry can be formed during post-treatment of coal powder, and the treatment difficulty is high. In addition, when coal seam parameters need to be measured, the accuracy of data can be ensured only by keeping the coal sample dry, so that drilling needs to be performed in an air drilling mode. And adopt the pneumatic drill to make the in-process produce a large amount of coal dusts, the coal dust flies upward for mine operation environment is poor, and visibility is low, and the construction operation degree of difficulty is big, and the workman is worn dust mask, and the health still receives great injury, also can influence the electrical equipment safety in the tunnel simultaneously. In the drilling process, when the gas content of the coal seam is too high, gas is easy to migrate out along the drilled hole through cracks and pores of surrounding coal bodies, and local gas in a roadway is over-limited. At present, dust fall and dust removal measures adopted for drilling on mines are mainly spray dust removal. The dust removal effect of spraying is greatly influenced by the types of dust and the wettability thereof, ideal dust removal effect is often difficult to achieve by single water mist, the dust removal effect is poor, the dust removal efficiency is to be further improved, and the phenomenon that gas is out of limit cannot be solved by spraying is effectively prevented, which is a technical problem to be solved.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a coal dust and gas removing device for a mining pneumatic drill, wherein an air injection port and an air suction port are arranged around a drill rod, gas generated by a drill hole is extracted in time, and pulverized coal is collected and separated in time.
The utility model relates to a coal dust and gas removing device for a mining pneumatic drill, which is achieved by the following specific technical means:
the utility model provides a mining pneumatic drill removes coal dust gas device, it includes collection device, buggy collector and gas buggy separator, through taking out between collection device and the buggy collector and the gas buggy separator and adopt the pipe intercommunication, still be connected with the gas injection pipe between collection device and gas buggy separator, the buggy collector is located collection device below and through buggy pipe and collection device intercommunication. The air injection ports and the air suction ports are arranged around the drill rod, so that gas generated by drilling is extracted in time, and pulverized coal is collected and separated in time.
The collecting device comprises a bag and a shell, the bag is connected with the shell and coated on a drill rod, the bag is connected with a hydraulic pump through a water injection pipe and a water injection valve, a baffle, a first-stage gas injection ring and a second-stage gas injection ring are respectively arranged on the inner side of the shell, a gas extraction opening, a powder collection opening, a first-stage gas injection opening, a second-stage gas injection opening and a gas concentration monitor are respectively arranged on the outer side wall of the shell, the powder collection opening is located at the bottom of the shell and is connected with a coal powder pipe, the gas extraction opening is located at the top of the shell and is connected with a gas extraction pipe, and the first-stage gas injection opening and the second-stage gas injection opening are respectively connected with the first-stage gas injection ring and the second-stage gas injection ring and are communicated with the gas injection pipe.
During the drilling process, coal dust and gas enter an inner cavity of the collecting device through a gap between a drill hole and a drill rod, dust firstly enters the cavity, granular dust collides with the baffle plate and is retained on a first layer of the cavity and enters the coal dust collector through the dust collecting port, and the other end of the coal dust collector is connected with the extraction pipeline to provide power for the coal dust to enter the coal dust collector.
Most of the coal powder is retained in the first layer, a small part of coal and gas enter the second layer, the second layer is a first-stage gas injection ring and is of a hollow structure, high-pressure air flows inside the second layer, the gas forms an air curtain after passing through an outlet, so that the coal powder and the gas are sealed and locked in the second layer, an annular opening is formed between the first layer and the second layer, and an extraction pipe is connected with an extraction opening to extract the coal powder and the gas in the second layer; the third layer is a structure similar to the second layer in a secondary gas injection ring, but the distance between the outlet of the secondary gas injection ring and the drill rod is smaller, the air outlet is smaller, and the blown air curtain is stronger; the device is externally provided with a gas concentration monitor, the treatment effect of the device is detected, when the gas concentration exceeds the standard, the device gives an alarm, and the gas inlet and the gas extraction valve of the device are required to be adjusted to achieve the qualified coal dust-gas removing effect.
The gas pulverized coal separator comprises a plurality of centrifugal dust collectors arranged side by side, the centrifugal dust collectors are connected in series through pipelines, a second-stage powder locking device is arranged at the bottom of each centrifugal dust collector, a horizontal belt is arranged below the second-stage powder locking device, a blade fan is connected to the end of the belt through a chain wheel and a chain and is connected to a gas injection pipe, a plurality of rollers are arranged on the belt, a horizontal pipe is connected to the tangential direction of the side edge of the top of the first-stage centrifugal dust collector and is connected with a gas extraction pipe, and a gas extraction main pipe is connected to the middle of the top of the last-stage centrifugal dust collector.
The second-stage powder locking device is composed of two blocking pieces, one section of the shifting piece is connected with the spring to provide tension, the blocking pieces are in a horizontal closing position under normal conditions, when the weight of upper coal dust exceeds a certain numerical value, the blocking pieces are automatically opened, the coal dust falls, the weight is reduced, the blocking pieces are automatically returned, and the two levels of the blocking pieces are adopted to realize that the device can automatically discharge coal to cause extraction of ambient air from an extraction pipeline.
The gas injection pipe firstly passes through a blade fan in the gas and coal powder separation device to drive the blades to rotate, and the blade shaft is connected with a roller shaft of a belt by adopting a chain wheel and a chain to drive the belt to rotate; and gas-coal powder mixed gas converged by the coal powder collector and the collecting device is introduced into a three-stage centrifugal dust remover for centrifugal separation to achieve gas-solid separation, the separated coal powder falls onto a belt through a secondary powder locking device, the belt conveys the coal powder out of the device, and the gas enters a mine drainage pipe network through a pipeline.
The coal dust collector is of a box body structure and is communicated with the coal dust pipe above the coal dust collector, the bottom end of the coal dust collector is provided with a powder locking device, and the side wall above the coal dust collector is also communicated with the extraction pipe through an extraction valve.
After the buggy got into buggy collector, great granule buggy deposits the device bottom, separate through baffle and export, make inside more buggy deposits the device, there is the powder locking device bottom, the device comprises two separation blades, one section of plectrum links to each other with the spring and provides the pulling force, normal condition separation blade is in the level closed position, when upper coal dust weight surpasss certain numerical value, the separation blade is automatic to be opened, the coal dust whereabouts, weight reduces, separation blade automatic return, adopt two-stage separation blade can realize that the automatic row coal of device causes to take out and adopt pipeline extraction ambient air.
And the extraction main pipe is provided with an extraction main valve.
And the extraction pipe is provided with extraction valves at different positions. The control is convenient according to the production requirement.
And the air injection pipe is respectively provided with an inlet valve and an outlet valve, and the blade fan is positioned between the inlet valve and the outlet valve.
The cross-section of one-level gas injection ring, second grade gas injection ring and baffle is the arc structure, and the one-level is annotated the ring and is located the centre of second grade gas injection ring and baffle, and the one-level is annotated the ring and be cavity body structure with the second grade gas injection, and the inboard has the air outlet, and the outside communicates with one-level gas injection mouth and second grade gas injection mouth respectively.
Adjusting valves of the gas injection pipe and the extraction pipe of each branch according to actual conditions to ensure no dust overflow; timely cleaning coal dust at the outlets of the coal dust collector and the gas coal dust separator; and after the gas monitor gives an alarm, stopping drilling, adjusting a valve of the extraction pipe to increase the extraction force, and continuing drilling after the alarm is finished.
The utility model at least comprises the following beneficial effects:
the method adopts a dry type separation technology, does not generate water vapor, has a good separation effect, has high gas extraction efficiency and a good dust removal effect, does not exceed the limit, adopts wind power as a power source, and reduces the trouble that special electrician needs to draw wires before starting the equipment; the dust is separated and then is treated in a centralized mode, the workload of cleaning a roadway after drilling construction is finished is reduced, the effect is good, the operation is simple, and the efficiency is high.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the collecting device of the present invention;
FIG. 3 is a view of the collection device of the present invention in the direction A;
FIG. 4 is a schematic structural diagram of a gas-coal dust separator according to the present invention.
Detailed Description
Embodiments of the present invention are described in further detail below by way of examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Example (b):
the utility model provides a coal dust and gas removing device for a mining pneumatic drill, which comprises a collecting device 2, a coal dust collector 12 and a gas coal dust separator 3, wherein the collecting device 2, the coal dust collector 12 and the gas coal dust separator 3 are communicated through an extraction pipe 5, a gas injection pipe 10 is also connected between the collecting device 2 and the gas coal dust separator 3, and the coal dust collector 12 is positioned below the collecting device 2 and is communicated with the collecting device 2 through a coal dust pipe 13. The air injection ports and the air suction ports are arranged around the drill rod, so that gas generated by drilling is extracted in time, and pulverized coal is collected and separated in time.
Further, as shown in fig. 2-3, the collecting device 2 includes a bag 1 and a casing 29, the bag 1 is connected to the casing 29 and covers the drill rod, the bag 1 is connected to the hydraulic pump 14 through the water injection pipe 16 and the water injection valve 15, the inner side of the casing 29 is respectively provided with a baffle 21, a first-stage gas injection ring 27 and a second-stage gas injection ring 26, the outer side wall of the casing 29 is respectively provided with a gas extraction opening 22, a powder collection opening 28, a first-stage gas injection opening 23, a second-stage gas injection opening 24 and a gas concentration monitor 25, the powder collection opening 28 is located at the bottom of the casing 29 and connected to the pulverized coal pipe 13, the gas extraction opening 22 is located at the top of the casing 29 and connected to the extraction pipe 5, and the first-stage gas injection opening 23 and the second-stage gas injection opening 24 are respectively connected to the first-stage gas injection ring 27 and the second-stage gas injection ring 26 and communicated to the gas injection pipe 10.
During the drilling process, coal dust and gas enter the inner cavity of the collecting device 2 through a gap between a drill hole and a drill rod, dust firstly enters the cavity, granular dust collides with the baffle plate 21 and is retained on the first layer of the cavity and enters the coal dust collector 12 through the dust collecting port 28, and the other end of the coal dust collector 12 is connected with an extraction pipeline to provide power for coal dust entering the coal dust collector 12.
Most of the coal powder is retained in the first layer, a small part of coal and gas enter the second layer, the second layer is a first-stage gas injection ring 27 which is of a hollow structure, high-pressure air flows inside the second layer, the gas forms an air curtain after passing through an outlet, so that the coal powder and the gas are locked in the second layer, an annular opening is formed between the first layer and the second layer, and an extraction pipe is connected with an extraction opening to extract the coal powder and the gas in the second layer; the third layer is that the structure of the second-level air injection ring 26 is similar to that of the second layer, but the distance between the outlet of the second-level air injection ring 26 and the drill rod is smaller, the air outlet is smaller, and the blown air curtain is stronger; the device is externally provided with a gas concentration monitor 25 for detecting the treatment effect of the device, and when the gas concentration exceeds the standard, the device gives an alarm and needs to adjust the air inlet and extraction valves of the device so as to achieve the qualified coal dust-gas removing effect.
Further, as shown in fig. 4, the gas-coal dust separator 3 includes a plurality of centrifugal dust collectors 34 arranged side by side, the centrifugal dust collectors 34 are connected in series through a pipeline 32, a second-stage dust locking device 35 is arranged at the bottom of the centrifugal dust collectors 34, a horizontal belt 36 is arranged below the second-stage dust locking device 35, a vane fan 38 is connected to the end of the belt 36 through a chain wheel and a chain 37, the vane fan 38 is connected to the gas injection pipe 10, a plurality of rollers 39 are arranged on the belt 36, a horizontal pipe 31 is connected to the top side edge tangential direction of the first-stage centrifugal dust collector 34, the horizontal pipe 31 is connected with the extraction pipe 5, and an extraction main pipe 33 is connected to the middle of the top of the last-stage centrifugal dust collector 34.
The second-stage powder locking device 35 is composed of two blocking pieces, one section of the shifting piece is connected with the spring to provide tension, the blocking pieces are in a horizontal closing position under normal conditions, when the weight of upper coal dust exceeds a certain numerical value, the blocking pieces are automatically opened, the coal dust falls, the weight is reduced, the blocking pieces automatically return, and the two levels of the blocking pieces are adopted to realize automatic coal discharging of the device to cause extraction of ambient air of an extraction pipeline.
The gas injection pipe 10 firstly passes through a blade fan 38 in the gas-coal powder separation device to drive blades to rotate, and a blade shaft is connected with a roller shaft of a belt 36 by a chain wheel chain 37 to drive the belt to rotate; gas-coal powder mixed gas collected by the coal powder collector 12 and the collecting device 2 is introduced into a three-stage centrifugal dust remover 34 for centrifugal separation to achieve gas-solid separation, the separated coal powder falls onto a belt 36 through a second-stage powder locking device 35, the belt 36 conveys the coal powder out of the device, and the gas enters a mine drainage pipe network through a pipeline.
Further, the pulverized coal collector 12 is of a box structure, and is communicated with the pulverized coal pipe 13 above the pulverized coal collector 12, the powder locking device 11 is arranged at the bottom end of the pulverized coal collector 12, and the side wall above the pulverized coal collector 12 is also communicated with the extraction pipe 5 through the extraction valve 4.
After buggy got into buggy collector 12, great granule buggy deposits the device bottom, separate through baffle and export, make inside more buggy deposits the device, there is powder locking device 11 device bottom, the device comprises two separation blades, one section of plectrum links to each other with the spring and provides the pulling force, normal condition separation blade is in the level closed position, when upper coal dust weight surpasses certain numerical value, the separation blade is automatic to be opened, the coal dust whereabouts, weight reduces, the separation blade self return, adopt two-stage separation blade can realize that the automatic row coal of device causes to take out and adopt pipeline extraction ambient air.
Further, a main extraction valve 7 is arranged on the main extraction pipe 33.
Further, an extraction valve 4 is arranged on the extraction pipe 5.
Further, the gas injection pipe 10 is provided with an inlet valve 8 and an outlet valve 9, respectively, and the vane fan 38 is located between the inlet valve 8 and the outlet valve 9.
Further, the cross-section of the first-level air injection ring 27, the second-level air injection ring 26 and the baffle 21 is of an arc structure, the first-level air injection ring 27 is located between the second-level air injection ring 26 and the baffle 21, the first-level air injection ring 27 and the second-level air injection ring 26 are of hollow cavity structures, the inner side of the hollow cavity structure is provided with an air outlet, and the outer side of the hollow cavity structure is communicated with the first-level air injection port 23 and the second-level air injection port 24 respectively.
A use method of a coal dust and gas removing device of a mining pneumatic drill comprises the following steps: firstly, 1m holes are formed in the section of a roadway, sundries on the coal wall are cleaned at the positions of the holes, a hole expanding drill is adopted to drill holes with the depth of 1m, the drill holes are withdrawn, and broken coal bodies near the drill holes are cleaned; secondly, placing the collecting device 2 into the drill hole, adjusting the angle, and enabling the powder collecting port 28 to face downwards; thirdly, connecting the water injection pipe 16 with the water pressure pump 14, injecting water to expand the bag 1, so that the coal powder can not enter the roadway through a gap between the bag 1 and the drill rod; fourthly, fixing the collecting device 2 and the roadway anchor rod and anchor cable; connecting the extraction opening 22 and the coal dust collector 12 with the gas coal dust separator 3 through an extraction pipe 5, opening an extraction valve 4, closing an extraction main valve 7, and connecting the other end of the extraction main valve with a mine extraction pipe network; sixthly, connecting the primary gas injection port 23 and the secondary gas injection port 24 with the gas injection pipe 10 respectively, opening the outlet valve 9, closing the inlet valve 8 and connecting the other end of the inlet valve with the mine air pipe; and seventhly, turning on a power supply of the gas concentration monitor 25, and turning on the inlet valve 8 and the extraction main valve 7 to start the drilling machine to drill.
Adjusting valves of the gas injection pipe and the extraction pipe of each branch according to actual conditions to ensure no dust overflow; the coal dust at the outlets of the coal dust collector 12 and the gas coal dust separator 3 is cleaned in time; and after the gas monitor 25 gives an alarm, stopping drilling, adjusting a valve of the extraction pipe to increase extraction force, and continuing drilling after the alarm is finished.
The method adopts a dry type separation technology, does not generate water vapor, has a good separation effect, has high gas extraction efficiency and a good dust removal effect, does not exceed the limit, adopts wind power as a power source, and reduces the trouble that special electrician needs to draw wires before starting the equipment; the dust is separated and then is treated in a centralized mode, the workload of cleaning a roadway after drilling construction is finished is reduced, the effect is good, the operation is simple, and the efficiency is high.
The utility model is not described in detail, but is well known to those skilled in the art.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. The utility model provides a mining pneumatic drill removes coal dust gas device which characterized in that: it includes collection device (2), coal dust collector (12) and gas coal dust separator (3), through taking out between collection device (2) and coal dust collector (12) and gas coal dust separator (3) and adopting pipe (5) intercommunication, still be connected with gas injection pipe (10) between collection device (2) and gas coal dust separator (3), coal dust collector (12) are located collection device (2) below and through coal dust pipe (13) and collection device (2) intercommunication.
2. The coal dust and gas removing device for the mining pneumatic drill according to claim 1, characterized in that: the collecting device (2) comprises a bag (1) and a shell (29), the bag (1) is connected with the shell (29) and is coated on the drill stem, the bag (1) is connected with a hydraulic pump (14) through a water injection pipe (16) and a water injection valve (15), a baffle plate (21), a primary air injection ring (27) and a secondary air injection ring (26) are respectively arranged on the inner side of the shell (29), be equipped with extraction opening (22) on the lateral wall of casing (29) respectively, collect powder mouth (28), one-level gas injection mouth (23), second grade gas injection mouth (24) and gas concentration monitor (25), it is connected with buggy pipe (13) and is located the bottom of casing (29) to collect powder mouth (28), extraction opening (22) are located the top of casing (29) and are connected with adopting pipe (5), one-level gas injection mouth (23) and second grade gas injection mouth (24) are connected with one-level gas injection ring (27) and second grade gas injection ring (26) respectively and are communicate with gas injection pipe (10).
3. The coal dust and gas removing device for the mining pneumatic drill according to claim 1, characterized in that: gas coal dust separator (3) include a plurality of centrifugal dust collector (34) of arranging side by side, centrifugal dust collector (34) are through pipeline (32) series connection, be equipped with second grade lock powder device (35) bottom centrifugal dust collector (34), be equipped with horizontally belt (36) in second grade lock powder device (35) below, tip at belt (36) is connected with impeller fan (38) through sprocket and chain (37), impeller fan (38) are connected to on gas injection pipe (10), are equipped with a plurality of gyro wheels (39) on belt (36), are connected with horizontal pipe (31) on the top side tangential direction of first order centrifugal dust collector (34), horizontal pipe (31) are connected with and take out and adopt tub (5), have in last one-level centrifugal dust collector (34) top intermediate junction and take out and adopt house steward (33).
4. The coal dust and gas removing device for the mining pneumatic drill according to claim 1, characterized in that: the coal dust collector (12) is of a box structure and is communicated with a coal dust pipe (13) above the coal dust collector (12), a powder locking device (11) is arranged at the bottom end of the coal dust collector (12), and the side wall above the coal dust collector (12) is also communicated with an extraction pipe (5) through an extraction valve (4).
5. The coal dust and gas removing device for the mining pneumatic drill according to claim 3, characterized in that: and the extraction main pipe (33) is provided with an extraction main valve (7).
6. The coal dust and gas removing device for the mining pneumatic drill according to claim 1, characterized in that: and the extraction pipe (5) is provided with an extraction valve (4).
7. The coal dust and gas removing device for the mining pneumatic drill according to claim 1, characterized in that: an inlet valve (8) and an outlet valve (9) are respectively arranged on the gas injection pipe (10), and the blade fan (38) is positioned between the inlet valve (8) and the outlet valve (9).
8. The coal dust and gas removing device for the mining pneumatic drill according to claim 2, characterized in that: the cross-section of one-level ring of aerifing (27), second grade ring of aerifing (26) and baffle (21) is the arc structure, and one-level ring of aerifing (27) are located the centre of second grade ring of aerifing (26) and baffle (21), and one-level ring of aerifing (27) and second grade ring of aerifing (26) are cavity body structure, and the inboard has the air outlet, and the outside is respectively with one-level gas injection mouth (23) and second grade gas injection mouth (24) intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220173960.8U CN216642190U (en) | 2022-01-22 | 2022-01-22 | Coal dust and gas removing device for mining pneumatic drill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220173960.8U CN216642190U (en) | 2022-01-22 | 2022-01-22 | Coal dust and gas removing device for mining pneumatic drill |
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| CN216642190U true CN216642190U (en) | 2022-05-31 |
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| CN202220173960.8U Active CN216642190U (en) | 2022-01-22 | 2022-01-22 | Coal dust and gas removing device for mining pneumatic drill |
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