CN210483794U - Device for automatically spraying powdery fireproof material to rear part of fully mechanized coal mining support - Google Patents
Device for automatically spraying powdery fireproof material to rear part of fully mechanized coal mining support Download PDFInfo
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- CN210483794U CN210483794U CN201921213386.9U CN201921213386U CN210483794U CN 210483794 U CN210483794 U CN 210483794U CN 201921213386 U CN201921213386 U CN 201921213386U CN 210483794 U CN210483794 U CN 210483794U
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Abstract
The utility model discloses a device for automatically spraying powdery fireproof material to the rear of a fully mechanized coal mining support, which comprises a feed hopper, a spraying storage bin, a pressure regulating chamber and a discharging flow disturbing pipe, wherein the spraying storage bin is positioned below the feed hopper and is communicated with a discharge hole at the bottom of the feed hopper, a feeding regulating valve is arranged at the communication part, one side of the spraying storage bin is communicated with an air outlet of the pressure regulating chamber through a pipeline, and the other side of the spraying storage bin is communicated with a feeding end of the discharging flow disturbing pipe through a pipeline; an air inlet of the pressure regulating chamber is communicated with an air outlet of a compressed air supply system in the fully mechanized coal mining face through a pipeline; the discharge end of the discharge turbulent flow tube is communicated with a nozzle through a pipeline. The utility model discloses structural design is ingenious and reasonable, both can realize utilizing machine equipment to replace manual work, liberation staff's manual labor, can realize again behind the comprehensive support that the width is 1 m's rectangle region in that likepowder fire resistive material's evenly sprays.
Description
The technical field is as follows:
the utility model belongs to the technical field of the fire prevention in the working face collecting space area is fully mechanized in the colliery, especially, relate to an automatic device that sprays likepowder fire resistive material to colliery fully mechanized mining support rear, it is installed and is sprayed likepowder fire resistive material to collecting space area inside on the fully mechanized mining support.
Background art:
for a long time, coal is used as grain in modern industry, has a series of advantages of abundant reserves, low price, good heating performance and the like, and is used as a main basic energy source in China. Due to the influence of coal bed occurrence, most mines in China have fire accidents all the year round, coal spontaneous combustion not only delays production, but also wastes resources, and causes material and financial loss slightly and casualties seriously. Statistically, more than 80% of accidents are caused by spontaneous combustion of coal, and more than 35 hundred million tons of coal resources are wasted each year. Therefore, the spontaneous combustion of coal is an important factor for restricting the safe and efficient production of coal mines, and a quick and effective method for stopping or reducing the spontaneous combustion of coal is imperative.
By using the fully mechanized mining process and the equipment, the processes of coal mining, coal dropping, coal conveying and the like are highly mechanized. However, the fully mechanized mining process and equipment bring a series of problems while improving the production efficiency. Because the coal seam fluctuates continuously, the fully mechanized mining technology of mining the full height at one time inevitably causes the top coal or the bottom coal to be left, the float coal becomes the hidden danger of spontaneous combustion, the hidden danger is brought to the natural ignition of the goaf, and particularly, the hidden danger is easy to generate the spontaneous combustion coal layer, and the risk is particularly prominent.
In order to inhibit the natural fire of the goaf, a conventional method is to send a specially assigned person to manually spray fireproof materials along the fully mechanized mining face towards the inner direction of the goaf. The operation is not only low in efficiency, but also workers must carry hundreds of jin of fireproof materials to operate on a plurality of coal mining working faces of mechanical equipment, so that the labor is heavy, and meanwhile, the fireproof materials are dust particles with very small particle sizes, so that the body health of the workers is negatively influenced.
The utility model has the following contents:
the utility model discloses a remedy the defect among the prior art, provide a combine to adopt automatic device that sprays likepowder fire resistive material in support rear to the colliery, through using this device, both can realize utilizing machine equipment to replace manual work, liberation staff's physical labor, can realize again that likepowder fire resistive material's even spraying is realized in the rectangle region that the width is 1m behind the support is adopted to the full-mechanized.
The utility model discloses a realize through following technical scheme:
the utility model provides a device that automatic likepowder fire prevention material that sprays to colliery full mechanized mining support rear which characterized in that: the device comprises a feed hopper, a spraying storage bin, a pressure regulating chamber and a discharge turbulent flow pipe which are arranged on a fully mechanized coal mining support, wherein the spraying storage bin is positioned below the feed hopper and is communicated with a discharge port at the bottom of the feed hopper, a feed regulating valve is arranged at the communication part, one side of the spraying storage bin is communicated with an air outlet of the pressure regulating chamber through a pipeline, and the other side of the spraying storage bin is communicated with a feed end of the discharge turbulent flow pipe through a pipeline; an air inlet of the pressure regulating chamber is communicated with an air outlet of a compressed air supply system in a fully mechanized coal mining face through a pipeline; the discharge end of the discharge turbulent flow tube is communicated with a nozzle through a pipeline.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: the pipeline communicated between the air outlet of the compressed air supply system and the air inlet of the pressure regulating chamber comprises two high-pressure air inlet rubber pipes respectively communicated with the air outlet of the compressed air supply system and the air inlet of the pressure regulating chamber and a metal pipe with a ball valve connected between the two high-pressure air inlet rubber pipes.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: a feed hopper support is fixed on a base of the coal mine fully-mechanized coal mining support, the feed hopper is fixed on the feed hopper support, and a feed hopper cover is mounted on an upper cover of the feed hopper.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: the spraying storage bin is communicated with the discharging turbulence pipe through a discharging metal pipe, and the discharging turbulence pipe is communicated with the nozzle through a nitrile rubber hose; the vertical distances between the discharge metal pipe and the nitrile rubber hose and between the discharge metal pipe and the base of the coal mining machine support are 10-15 cm.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: the length dimension of the pressure regulating chamber is 8 times of the outer diameter of a high-pressure air inlet rubber pipe connected with an air inlet of the pressure regulating chamber, the height dimension of the pressure regulating chamber is 1.5 times of the length dimension of the pressure regulating chamber, the outer diameter of the high-pressure air inlet rubber pipe connected with the air inlet of the pressure regulating chamber is 25.4mm, the length dimension of the pressure regulating chamber is 200-220 mm, and the height dimension of the pressure regulating chamber is 300-320 mm.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: the front view and the top view of the discharging turbulent flow tube are Z-shaped, the vertical dimension and the longitudinal horizontal dimension of the feeding end of the discharging turbulent flow tube and the longitudinal horizontal dimension of the rear end of the discharging turbulent flow tube are equal to the length dimension of the pressure regulating chamber, the horizontal projection length dimension and the vertical projection length dimension of the middle inclined section of the discharging turbulent flow tube are 2 times of the length dimension of the pressure regulating chamber, and the vertical dimension of the discharging end of the discharging turbulent flow tube is half of the length dimension of the pressure regulating chamber; the length of the transverse pipe at the discharge end of the discharge turbulent pipe is 20-25 mm.
Through the design, on one hand, the flow inertia of the airflow in the turbulence pipe in the vertical direction can be eliminated, and on the other hand, the airflow in the turbulence pipe can generate the flow inertia in the horizontal direction, so that the nitrile rubber hose and the nozzle are driven to swing left and right, and the left and right spraying is realized. The relation between all sizes is determined through experiments, and if the specified size relation is not achieved, the purposes of rectifying in the vertical direction and then disturbing the flow in the horizontal direction cannot be achieved.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: the inner and outer diameter sizes of the discharging turbulent flow tube are the same as those of the discharging metal tube, and the discharging turbulent flow tube is a flame-retardant anti-static PVC plastic tube.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: the horizontal distance between the outer edge of the nozzle and the outer edge of the base of the coal mining machine support is 15-20 cm.
The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized coal mining support is characterized in that: the volume of the feed hopper is not less than 50L; the volume of the spraying storage bin is 1L.
The principle of the utility model is as follows:
the utility model discloses utilize the colliery to combine the pressure wind air supply system who adopts the working face to combine the likepowder fire resistive material to the colliery to adopt the width to realize the even spraying of likepowder fire resistive material in the rectangle region of 1m behind the support. There are two key challenges in this process, namely, how a is to achieve front-to-back spraying, and b is to achieve side-to-side spraying.
The utility model discloses utilize the difficult problem that sprays around the surge-chamber is solved, promptly, behind the highly-compressed air entering surge-chamber, gas can expand rapidly, pressure drops to being close 2 times atmospheric pressure rapidly, then holds the pressure gradually, and pressure constantly increases, and the in-process that pressure constantly increases is simultaneously with likepowder fire prevention material blowout to the realization is by spraying near and far.
The difficult problem of spraying about this device utilizes the combined action of ejection of compact vortex tube, butadiene acrylonitrile rubber hose, spout to solve, promptly, utilizes ejection of compact vortex tube to carry out the vortex with the blowout air current, produces a large amount of whirlpools, and these a large amount of whirlpools produce the whipping effect of left and right directions in the butadiene acrylonitrile rubber hose, simultaneously, because the spout has certain quality and volume, its inertial action has increaseed this kind of whipping effect of left and right directions to spray about realizing.
The utility model discloses a feeder hopper support is fixed on the coal-winning machine support base of the coal mine combine and adopts the working face, and the horizontal distance between spout outer fringe and the coal-winning machine support base outer fringe is f, and f is 15-20 cm.
The utility model discloses ejection of compact tubular metal resonator, nitrile rubber hose, combine to adopt the vertical distance of the coal-winning machine support base of working face for 10~15cm apart from the colliery.
And the high-pressure air inlet rubber pipe is connected with a compressed air supply system in the fully mechanized coal mining face of the coal mine.
The time that the feeding hopper is fully supplied with the materials to the spraying storage bin is controlled to be 15-30 s by the feeding adjusting valve.
The outer diameters of the connecting pipe at the two ends of the pressure regulating chamber, the discharging metal pipe and the metal pipe with the ball valve are 25.4 mm. The inner diameters of the high-pressure air inlet rubber pipe and the nitrile rubber hose are 25.4 mm.
The rated pressure-bearing capacity of the high-pressure air inlet rubber pipe is not less than 3 MPa.
In order to realize the functions of pressure reduction, pressure accumulation and final front and back spraying in the pressure regulating chamber, the value of a is required to be 200-220 mm, and the value of b in fig. 1 is 1.5a, namely 300-320 mm. Wherein a is the length dimension of the pressure adjusting chamber, and b is the height dimension of the pressure adjusting chamber.
In order to realize the turbulent flow function and finally realize the left-right swinging spraying function, the inner diameter and the outer diameter of the discharging turbulent flow pipe are required to be the same as those of the discharging metal pipe, and the discharging turbulent flow pipe is made of flame-retardant antistatic PVC plastic. The discharging turbulence pipe is Z-shaped in the front view and the top view, the main parameters of the discharging turbulence pipe are shown in figure 1, figures 2a and 2b, the value of a is the same as that of a in the pressure adjusting chamber 6, and the value of c is 20-25 mm, wherein c represents the length of a transverse pipe at the discharging end of the discharging turbulence pipe.
In order to realize the function of spraying in a left-right swinging mode, the wall thickness of the nitrile rubber hose is required to be 5mm, and the length of the nitrile rubber hose is required to be d and is 80-90 mm. The spout is made of PVC plastic with the thickness of 2mm, the length is e, the value of e is 80mm, and the diameter of the outer edge of the spout is 80 mm.
The utility model has the advantages that:
the utility model discloses structural design is ingenious and reasonable, both can realize utilizing machine equipment to replace manual work, liberation staff's manual labor, can realize again behind the comprehensive support that the width is 1 m's rectangle region in that likepowder fire resistive material's evenly sprays.
Description of the drawings:
fig. 1 is a schematic view of the structure of the present invention.
Fig. 2a is a front view of the discharge turbulent flow tube of the present invention.
Fig. 2b is a top view of the discharge turbulent flow tube of the present invention.
Fig. 3 is the installation structure schematic diagram of the utility model on the coal mine fully mechanized coal mining support.
The specific implementation mode is as follows:
see the drawings.
A device for automatically spraying powdery fireproof material to the rear of a coal mine fully-mechanized mining support comprises a feed hopper 1, a spraying storage bin 5, a pressure regulating chamber 6 and a discharging turbulent flow pipe 10, wherein the feed hopper 1, the spraying storage bin 5, the pressure regulating chamber 6 and the discharging turbulent flow pipe 10 are arranged on the coal mine fully-mechanized mining support, the spraying storage bin 5 is positioned below the feed hopper 1 and is communicated with a discharge port at the bottom of the feed hopper 1, a feeding regulating valve 4 is arranged at the communication part, one side of the spraying storage bin 5 is communicated with an air outlet of the pressure regulating chamber 6 through a pipeline, and the; an air inlet of the pressure regulating chamber 6 is communicated with an air outlet of a compressed air supply system 14 in a fully mechanized coal mining face through a pipeline; the discharge end of the discharge turbulent flow tube 10 is communicated with a nozzle 12 through a pipeline.
The pipeline communicated between the air outlet of the compressed air supply system 14 and the air inlet of the pressure adjusting chamber 6 comprises two high-pressure air inlet rubber pipes 7 respectively communicated with the air outlet of the compressed air supply system and the air inlet of the pressure adjusting chamber and a metal pipe 8 with a ball valve connected between the two high-pressure air inlet rubber pipes 7.
A feed hopper support 3 is fixed on a base 13 of the coal mine fully-mechanized coal mining support, a feed hopper 1 is fixed on the feed hopper support 3, and a feed hopper cover 2 is covered on the feed hopper 1.
The spraying storage bin 5 is communicated with the discharging turbulent flow pipe 10 through a discharging metal pipe 9, and the discharging turbulent flow pipe 10 is communicated with the nozzle 12 through a nitrile rubber hose 11; the vertical distances between the discharge metal pipe 9 and the nitrile rubber hose 11 and the coal mining machine support base 13 are 10-15 cm.
The length dimension a of the pressure regulating chamber is 8 times of the outer diameter of a high-pressure air inlet rubber pipe connected with an air inlet of the pressure regulating chamber, the height dimension b of the pressure regulating chamber is 1.5 times of the length dimension a of the pressure regulating chamber, the outer diameter of the high-pressure air inlet rubber pipe connected with the air inlet of the pressure regulating chamber is 25.4mm, the length dimension of the pressure regulating chamber is 200-220 mm, and the height dimension of the pressure regulating chamber is 300-320 mm.
The front view and the top view of the discharging turbulent flow tube are Z-shaped, the vertical dimension and the longitudinal horizontal dimension of the feeding end of the discharging turbulent flow tube and the longitudinal horizontal dimension of the rear end of the discharging turbulent flow tube are equal to the length dimension of the pressure regulating chamber, the horizontal projection length dimension and the vertical projection length dimension of the middle inclined section of the discharging turbulent flow tube are 2 times of the length dimension of the pressure regulating chamber, and the vertical dimension of the discharging end of the discharging turbulent flow tube is half of the length dimension of the pressure regulating chamber; the length of the transverse pipe at the discharge end of the discharge turbulent pipe is 20-25 mm.
The inner and outer diameter sizes of the discharging turbulent flow tube are the same as those of the discharging metal tube, and the discharging turbulent flow tube is a flame-retardant anti-static PVC plastic tube.
The horizontal distance between the outer edge of the nozzle and the outer edge of the base of the coal mining machine support is 15-20 cm.
The volume of the feed hopper is not less than 50L; the volume of the spraying storage bin is 1L.
The utility model discloses a work flow does:
first, preparation work
1. According to the mounting structure shown in figure 1, all the parts of the utility model are connected into a whole, and the distance between the discharge metal pipe 9 of the device and the base 13 of the coal mining machine bracket is ensured to be 10-15 cm.
2. According to the installation structure shown in fig. 2a and 2b, the utility model is installed on the fully mechanized coal mining support, and for convenient operation, the metal pipe 8 with the ball valve is hung on the hook of the hydraulic prop 15, and meanwhile, the horizontal distance f between the outer edge of the nozzle 12 and the outer edge of the base 13 of the coal mining machine support is 15-20cm, as shown in fig. 3.
3. On the premise of ensuring that the ball valve on the metal pipe 8 with the ball valve is in a closed state, the high-pressure air inlet hose 8 of the device is connected with a compressed air supply system 14 in a fully mechanized mining face, as shown in fig. 1, 2a and 2 b.
4. The feeding adjusting valve 4 is adjusted well, and the time for the feeding hopper 1 to fully feed the spraying storage bin 5 is ensured to be 15-30 s.
5. The feed hopper 1 is filled with a powdery fireproof material, and a cover is covered to prevent water from dropping into the feed hopper 1.
6. The wind pressure of a compressed air supply system 14 in the fully mechanized mining face is ensured to be 0.6-0.8 MPa.
Secondly, spraying
1. After the working face moves the support, the ball valve on the metal pipe 8 with the ball valve is quickly opened, so that the compressed air carries the powdery fireproof material to spray to the rear of the fully mechanized mining support.
2. The ball valve on the metal pipe 8 with the ball valve is maintained open for no more than 10s, and then the ball valve is closed quickly.
3. If spraying is needed again, the time interval from the last spraying is not less than 30 s.
Claims (10)
1. The utility model provides a device that automatic likepowder fire prevention material that sprays to colliery full mechanized mining support rear which characterized in that: the device comprises a feed hopper, a spraying storage bin, a pressure regulating chamber and a discharge turbulent flow pipe which are arranged on a fully mechanized coal mining support, wherein the spraying storage bin is positioned below the feed hopper and is communicated with a discharge port at the bottom of the feed hopper, a feed regulating valve is arranged at the communication part, one side of the spraying storage bin is communicated with an air outlet of the pressure regulating chamber through a pipeline, and the other side of the spraying storage bin is communicated with a feed end of the discharge turbulent flow pipe through a pipeline; an air inlet of the pressure regulating chamber is communicated with an air outlet of a compressed air supply system in a fully mechanized coal mining face through a pipeline; the discharge end of the discharge turbulent flow tube is communicated with a nozzle through a pipeline.
2. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: the pipeline communicated between the air outlet of the compressed air supply system and the air inlet of the pressure regulating chamber comprises two high-pressure air inlet rubber pipes respectively communicated with the air outlet of the compressed air supply system and the air inlet of the pressure regulating chamber and a metal pipe with a ball valve connected between the two high-pressure air inlet rubber pipes.
3. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: a feed hopper support is fixed on a base of the coal mine fully-mechanized coal mining support, the feed hopper is fixed on the feed hopper support, and a feed hopper cover is mounted on an upper cover of the feed hopper.
4. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: the spraying storage bin is communicated with the discharging turbulence pipe through a discharging metal pipe, and the discharging turbulence pipe is communicated with the nozzle through a nitrile rubber hose; the vertical distances between the discharge metal pipe and the nitrile rubber hose and between the discharge metal pipe and the base of the coal mining machine support are 10-15 cm.
5. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: the length of the pressure regulating chamber is 8 times of the outer diameter of a high-pressure air inlet rubber pipe connected with an air inlet of the pressure regulating chamber.
6. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: the height dimension of surge-chamber is 1.5 times of the length dimension of surge-chamber, and the length dimension of surge-chamber is 200~220mm, and the height dimension of surge-chamber is 300~320 mm.
7. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: the front view and the top view of the discharging turbulent flow tube are Z-shaped, the vertical dimension and the longitudinal horizontal dimension of the feeding end of the discharging turbulent flow tube and the longitudinal horizontal dimension of the rear end of the discharging turbulent flow tube are equal to the length dimension of the pressure regulating chamber, the horizontal projection length dimension and the vertical projection length dimension of the middle inclined section of the discharging turbulent flow tube are 2 times of the length dimension of the pressure regulating chamber, and the vertical dimension of the discharging end of the discharging turbulent flow tube is half of the length dimension of the pressure regulating chamber; the length of the transverse pipe at the discharge end of the discharge turbulent pipe is 20-25 mm.
8. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 4, wherein: the inner and outer diameter sizes of the discharging turbulent flow tube are the same as those of the discharging metal tube, and the discharging turbulent flow tube is a flame-retardant anti-static PVC plastic tube.
9. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: the horizontal distance between the outer edge of the nozzle and the outer edge of the base of the coal mining machine support is 15-20 cm.
10. The device for automatically spraying the powdery fireproof material to the rear part of the fully mechanized mining support of the coal mine according to claim 1, is characterized in that: the volume of the feed hopper is not less than 50L; the volume of the spraying storage bin is 1L.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921213386.9U CN210483794U (en) | 2019-07-30 | 2019-07-30 | Device for automatically spraying powdery fireproof material to rear part of fully mechanized coal mining support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921213386.9U CN210483794U (en) | 2019-07-30 | 2019-07-30 | Device for automatically spraying powdery fireproof material to rear part of fully mechanized coal mining support |
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| CN210483794U true CN210483794U (en) | 2020-05-08 |
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| CN201921213386.9U Active CN210483794U (en) | 2019-07-30 | 2019-07-30 | Device for automatically spraying powdery fireproof material to rear part of fully mechanized coal mining support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242344A (en) * | 2019-07-30 | 2019-09-17 | 鄂尔多斯市中北煤化工有限公司 | A kind of device to mechanized coal mining bracket rear automatic spraying powdery fire proofing material |
-
2019
- 2019-07-30 CN CN201921213386.9U patent/CN210483794U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242344A (en) * | 2019-07-30 | 2019-09-17 | 鄂尔多斯市中北煤化工有限公司 | A kind of device to mechanized coal mining bracket rear automatic spraying powdery fire proofing material |
| CN110242344B (en) * | 2019-07-30 | 2024-04-30 | 鄂尔多斯市中北煤化工有限公司 | Device for automatically spraying powdery fireproof material to rear of fully-mechanized coal mining support |
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