CN112761710B - Flame-retardant and explosion-proof device for coal mine - Google Patents
Flame-retardant and explosion-proof device for coal mine Download PDFInfo
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- CN112761710B CN112761710B CN202110131006.2A CN202110131006A CN112761710B CN 112761710 B CN112761710 B CN 112761710B CN 202110131006 A CN202110131006 A CN 202110131006A CN 112761710 B CN112761710 B CN 112761710B
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- 239000003245 coal Substances 0.000 title claims abstract description 25
- 239000003063 flame retardant Substances 0.000 title claims abstract description 21
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 57
- 239000007924 injection Substances 0.000 claims abstract description 57
- 239000000843 powder Substances 0.000 claims abstract description 38
- 238000005507 spraying Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 238000004880 explosion Methods 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 31
- 239000002817 coal dust Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/08—Rock dusting of mines; Depositing other protective substances
- E21F5/10—Devices for rock dusting
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
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Abstract
The invention relates to the technical field of coal mine flame-retardant devices, in particular to a coal mine flame-retardant explosion-proof device which comprises a high-pressure gun, a trigger device, a trigger rod and a spraying device, wherein the high-pressure gun is arranged on one side of the trigger device, the spraying device is arranged on the other side of the trigger device, the explosion-proof device is arranged at the top in a coal mine tunnel through a hanging device, fire extinguishing powder is arranged in the spraying device, the trigger rod is arranged at the top in the coal mine tunnel through the hanging device, one end of the trigger rod is provided with a trigger plate, and the other end of the trigger rod is arranged on the trigger device; the high-pressure gun does not occupy the space in the injection device, is beneficial to sealing the fire extinguishing powder, prevents the powder from leaking or being affected with damp, and is beneficial to the regular replacement of the fire extinguishing powder.
Description
Technical Field
The invention relates to the technical field of coal mine flame-retardant devices, in particular to a coal mine flame-retardant explosion-proof device.
Background
In coal mines, the explosion generally falls into two categories, namely gas explosion and coal dust explosion. Whether gas explosion or coal dust explosion, the hazards are generally classified into 4 types: firstly, the instantaneous temperature generated by gas explosion can reach 1850-2650 ℃ at high temperature, and the instantaneous temperature of coal dust explosion can reach 2300-2500 ℃, so that mine fire, equipment burning and personnel burning can be caused; secondly, high pressure, the gas pressure after gas explosion is 7-10 times of the gas pressure before explosion through experiment and theoretical calculation, the theoretical pressure of coal dust explosion can reach 735kPa, equipment can be damaged, a rack can be pushed down, and roof fall and casualties can be caused; thirdly, the concentration of carbon monoxide generated after gas explosion can reach 20000ppm, and the concentration of carbon monoxide generated after coal dust explosion is generally 30000ppm, so that people can be suffocated or die quickly; fourthly, the propagation speed of shock waves can reach 2340m/s, so that equipment, supports and personnel are damaged, and the mining flame-proof device generally utilizes the principle that the speed of air shock waves generated by explosion is far greater than the speed of flames to trigger the flame-proof device when the air shock waves arrive, so that fire extinguishing powder is released in advance, and flames are blocked to prevent other secondary disasters from occurring under mines.
In the device, impact waves are received through square impact waves and are transmitted to a loading hoop of a trigger device through a push rod, a sliding sleeve is pushed to move towards a rear axle center, a cavity of the sliding sleeve is moved to a steel ball hole, and the steel ball is jacked up by the rear end of a piston in a radial hole so that the steel ball does not limit the piston any more, and the piston moves forwards along the axial direction under the pressure of compressed gas of a high-pressure tank to move away the position of a sealing air leakage hole. Compressed air in the high-pressure tank is led to the connecting cavity through the eight air leakage holes X on the air injection pipe to enter the storage bin, so that the superfine fire extinguishing powder in the storage bin breaks through the sealing film to be injected out under the action of compressed nitrogen, and superfine fire extinguishing powder cloud is formed in a roadway.
However, in the above device, the high-pressure tank is arranged in the storage bin, so that the explosion-proof device has corresponding problems: (1) The high-pressure tank occupies a large amount of space of the storage bin, so that the storage amount of the fire extinguishing powder is reduced, and the flame-retardant and explosion-proof effects are poor; (2) The high-pressure tank is arranged in the storage bin, when the device is triggered to spray the fire extinguishing powder, a cavity is formed in the center of the high-pressure tank, the fire extinguishing powder is not uniformly distributed, and the flame-retardant and flame-proof effects are affected; (3) The high-pressure gas in the high-pressure tank needs to go back to the sealed air release hole first and then return to impact the fire extinguishing powder, so that the time from triggering to spraying the fire extinguishing powder is too long, the fire extinguishing powder is not favorably and uniformly distributed in a roadway quickly, and the fire extinguishing effect is influenced; (4) The high-pressure tank is in the storage bin, is not favorable to the sealed of powder of putting out a fire, causes easily to leak the powder or wet to inconvenient regular replacement of the powder of putting out a fire.
Disclosure of Invention
In order to solve the problems caused by the fact that the high-pressure tank is arranged in the storage bin, the invention provides a flame-retardant and explosion-proof device for a coal mine.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a fire-retardant flame proof device in colliery, includes high-pressure gun, trigger device, trigger bar and injection apparatus, the high-pressure gun establish in one side of trigger device, injection apparatus establish the opposite side at trigger device, flame proof device pass through cable suspension device and install top in coal mine tunnel, injection apparatus in be equipped with the powder of putting out a fire, the trigger bar passes through top in the cable suspension device installation coal mine tunnel, the one end of trigger bar is equipped with the trigger plate, the other end is installed on trigger device.
As optimization, trigger device include jet-propelled pipe, piston, one-way trigger sliding sleeve and sliding sleeve, jet-propelled pipe including section, linkage segment, the jet-propelled section of admitting air and trigger the section, the section of admitting air link firmly in the one side that is close to the high pressure rifle, the linkage segment establish the rear side at the section of admitting air, the jet-propelled section link firmly the rear side at the linkage segment, the trigger section establish the rear side at the jet-propelled section, the piston establish at jet-propelled intraduct, the trigger section install in one-way trigger sliding sleeve, sliding sleeve suit on the high pressure rifle, sliding sleeve pass through the one-way trigger sliding sleeve of sliding rod connection.
Preferably, a ventilation cavity is arranged in the air injection pipe and comprises an air inlet cavity, a piston mounting cavity, an injection cavity and a middle air injection cavity, the air inlet cavity is arranged in the air inlet section, the piston mounting cavity is arranged in the connecting section, the injection cavity is arranged in the air injection section, and the middle air injection cavity is arranged in the trigger section.
As optimization, the air injection section is provided with a plurality of air injection holes along the circumferential direction of the pipeline, the included angle between the central axis of the air injection hole and the central axis of the air injection pipe is 30 to 60 degrees, the one-way trigger sliding sleeve is fixedly connected to the sliding rod through a fixing block, the connecting section is provided with a sliding hole, the sliding rod penetrates through the sliding hole, and the upper side of the connecting section is fixedly connected to the hanging device.
As optimization, the connecting section is further provided with a safety nail, the connecting section is provided with a safety nail hole, the safety nail hole is communicated to the sliding hole, and the safety nail is detachably arranged in the safety nail hole and is pressed against the sliding rod.
Preferably, a steel ball trigger groove is arranged in the one-way trigger sliding sleeve, a steel ball storage groove is arranged on the trigger section, a steel ball is arranged in the steel ball storage groove, the steel ball trigger groove and the steel ball storage groove are installed in a staggered mode, and the steel ball trigger groove is closer to the high-pressure gun relative to the steel ball storage groove.
As optimization, the front side of jet-propelled pipe be equipped with the manometer connector, the front end of manometer connector connect the high-pressure rifle, the jet-propelled pipe of manometer connector other end connection, the manometer connector with jet-propelled pipe junction be equipped with Y type sealing washer, the manometer connector on still be equipped with the manometer connector that is used for the gas filling of high-pressure rifle and connects the manometer, the manometer connector still be equipped with the manometer cover outward.
Preferably, the high-pressure gun comprises a high-pressure pipe, a plug is arranged at one end of the high-pressure gun, the spraying device comprises an outer cover, the outer cover is connected to the air injection pipe through a connecting flange, a spraying inclined plane is arranged at the other end of the outer cover, a rear check ring is arranged on the spraying inclined plane, a front check ring is arranged on the front side inside the outer cover, films used for plugging fire extinguishing powder are arranged on the front check ring and the rear check ring, and the included angle of the spraying inclined plane relative to the horizontal plane is 45-90 degrees.
Preferably, the piston comprises a stress head and a trigger pipe, a seal ring groove is formed in the side face of the stress head, a Y-shaped seal ring is arranged in the seal ring groove, a vertical vent pipe which is communicated with the outside of the stress head and the inside of the trigger pipe is arranged on the stress head, a step edge is arranged at the rear end of the trigger pipe, and the step edge is aligned with the steel ball storage groove.
Preferably, the hanging device comprises a first hanging rod for hanging the trigger rod, a second hanging rod fixed on the gas ejector pipe and a third hanging rod fixed on the outer cover, a sliding sleeve is arranged at the bottom of the first hanging rod, and the trigger rod is installed in the sliding sleeve.
The whole beneficial effect of this scheme is: the high-pressure gun of the device is arranged outside the injection device, so that more fire extinguishing powder can be stored in the injection device, compared with the prior art, the fire extinguishing powder cannot generate a cavity in the center when being sprayed out, the fire extinguishing powder is distributed more uniformly in a roadway, the high-pressure gun of the device is arranged closer to the trigger rod, and high-pressure air in the high-pressure gun is delivered to the fire extinguishing powder through the air injection pipe to form an approximately linear air passage when being released, so that the condition that the air passage turns back in the prior art is avoided, the release speed of the fire extinguishing powder is higher, and the fire extinguishing powder is favorably and uniformly distributed in the roadway; the high-pressure gun does not occupy the space in the injection device, is beneficial to sealing the fire extinguishing powder and preventing the fire extinguishing powder from leaking or being affected with damp, the outer cover is connected to the air injection pipe through the connecting flange, the fire extinguishing powder can be replaced by disassembling the connecting flange, and the regular replacement of the fire extinguishing powder is facilitated;
the technical characteristics and technical effects of the device are as follows: (1) The high-pressure gun is arranged on the other side of the injection device and blocks the trigger rod, so that the sliding sleeve is arranged outside the high-pressure gun, the trigger device can be realized, the high-pressure gun can be protected, and the high-pressure gun is prevented from being damaged; (2) The piston is provided with the vertical vent pipe, so that high-pressure gas can enter the trigger pipe at the central position of the piston to be sprayed out except for being sprayed out from a circle of gas spraying holes, the stress of fire extinguishing powder is more uniform, the fire extinguishing powder is more uniformly distributed in a roadway after being sprayed out, flame is blocked more favorably, and the defect that the fire extinguishing powder is lost at the central position in the prior art is overcome; (3) The pressure gauge connector of the device simultaneously realizes the inflation of the high-pressure gun and the connection of the pressure gauge, and is beneficial to detecting the air pressure condition in the high-pressure gun; (4) The sliding sleeve of the device triggers the one-way triggering sliding sleeve through the transmission of the sliding rod, the sliding rod is squeezed by the arranged safety nail in the transportation or installation and debugging process of the device, the device is prevented from being triggered by mistake, and the gas injection pipe of the device can realize the gas conduction and can also carry out safety limitation on the device; (5) The Y-shaped sealing rings are adopted at the sealing positions of the pressure tank connector and the gas ejector pipe, the gas ejector pipe and the piston and the like, and the device is more favorable for sealing high-pressure gas.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the triggering device of the present invention.
FIG. 3 is a schematic view of the structure at the left end of the high pressure gun of the present invention.
Fig. 4 is a schematic structural view of a pressure gauge connector according to the present invention.
FIG. 5 is a schematic illustration of the structure of a gas lance according to the invention.
Fig. 6 is a schematic diagram of the piston structure of the present invention.
FIG. 7 is a schematic view of a one-way triggering sliding sleeve structure of the present invention.
FIG. 8 is a schematic view of the structure of the spraying device of the present invention.
The high-pressure gun comprises a high-pressure gun body 1, a high-pressure gun body 2, a trigger device 3, a trigger rod 4, a spraying device 5, a hanging device 6, a trigger plate 7, an air ejector pipe 8, a piston 9, a one-way trigger sliding sleeve 10, a sliding sleeve 11, an air inlet section 12, a connecting section 13, an air ejecting section 14, a trigger section 15, an air vent cavity 16, an air inlet cavity 17, a piston installation cavity 18, an injection cavity 19, a middle air ejecting cavity 20, an air ejecting hole 21, a fixed block 22, a sliding rod 23, a sliding hole 24, a safety nail, 25, a safety nail hole 26, a steel ball trigger groove 27, a steel ball storage groove 28, a steel ball 29, a pressure gauge connector 30, a Y-shaped sealing ring 31, an air filling port 32, a connecting port 33, a pressure gauge cover 34, a plug, 35, an outer cover 36, a connecting flange 37, an injection inclined plane 38, a rear retainer ring 39, a front retainer ring 40, a stress head 41, a trigger pipe 42, a pressure gauge cover 42, a pressure gauge sealing ring groove, a hanger rod sealing ring groove 44, a hanger rod sealing ring, a first step, a second step 46, a second step 47 and a third step.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the embodiment shown in fig. 1, a flame-retardant explosion-proof device for coal mine comprises a high-pressure gun 1, a trigger device 2, a trigger rod 3 and an injection device 4, wherein the high-pressure gun 1 is arranged on one side of the trigger device 2, the injection device 4 is arranged on the other side of the trigger device 2, the explosion-proof device is arranged at the top of the coal mine roadway through a hanging device 5, fire extinguishing powder is arranged in the injection device 4, the trigger rod 3 is arranged at the top of the coal mine roadway through the hanging device 5, one end of the trigger rod 3 is provided with a trigger plate 6, and the other end of the trigger rod is arranged on the trigger device 2.
As shown in fig. 2, trigger device 2 include jet-propelled pipe 7, piston 8, one-way trigger sliding sleeve 9 and sliding sleeve 10, jet-propelled pipe 7 include air intake section 11, linkage segment 12, jet-propelled section 13 and trigger section 14, air intake section 11 link firmly in the one side that is close to high-pressure gun 1, linkage segment 12 establish the rear side at air intake section 11, jet-propelled section 13 link firmly the rear side at linkage segment 12, trigger section 14 establish the rear side at jet-propelled section 13, piston 8 establish inside jet-propelled pipe 7, trigger section 14 install in one-way trigger sliding sleeve 9, sliding sleeve 10 suit on high-pressure gun 1, sliding sleeve 10 pass through slide bar 22 and connect one-way trigger sliding sleeve 9.
As shown in fig. 5, a ventilation cavity 15 is arranged in the air injection pipe 7, the ventilation cavity 15 includes an air inlet cavity 16, a piston mounting cavity 17, an injection cavity 18 and an intermediate air injection cavity 19, the air inlet cavity 16 is arranged in the air inlet section 11, the piston mounting cavity 17 is arranged in the connecting section 12, the injection cavity 18 is arranged in the air injection section 13, and the intermediate air injection cavity 19 is arranged in the trigger section 14.
As shown in fig. 5, the air injection section 13 is provided with a plurality of air injection holes 20 along the circumferential direction of the pipeline, an included angle between a central axis of each air injection hole 20 and a central axis of each air injection pipe 7 is 30 to 60 degrees, as shown in fig. 7, the one-way trigger sliding sleeve 9 is fixedly connected to the sliding rod 22 through the fixing block 21, the connecting section 12 is provided with the sliding hole 23, the sliding rod 22 penetrates through the sliding hole 23, as shown in fig. 1, the upper side of the connecting section 12 is fixedly connected to the hanging device 5.
As shown in fig. 2, the connecting section 12 is further provided with a safety nail 24, the connecting section 12 is provided with a safety nail hole 25, the safety nail hole 25 is communicated with the sliding hole 23, and the safety nail 24 is detachably installed in the safety nail hole 25 to press the sliding rod 22.
As shown in fig. 7, a steel ball trigger groove 26 is arranged in the one-way trigger sliding sleeve 9, as shown in fig. 5, a steel ball storage groove 27 is arranged on the trigger section 14, a steel ball 28 is arranged in the steel ball storage groove 27, as shown in fig. 2, the steel ball trigger groove 26 and the steel ball storage groove 27 are installed in a staggered manner, and the steel ball 28 and the steel ball trigger groove 26 are closer to the high pressure gun 1 than the steel ball storage groove 27.
As shown in fig. 4, the front side of the gas ejector pipe 7 is provided with a pressure gauge connector 29, the front end of the pressure gauge connector 29 is connected with the high-pressure gun 1, the other end of the pressure gauge connector 29 is connected with the gas ejector pipe 7, a Y-shaped sealing ring 30 is arranged at the joint of the pressure gauge connector 29 and the gas ejector pipe 7, the pressure gauge connector 29 is further provided with a gas filling port 31 for filling gas into the high-pressure gun 1 and a pressure gauge connecting port 32 for connecting the pressure gauge, as shown in fig. 2, the pressure gauge connector 29 is further provided with a pressure gauge cover 33.
The high-pressure gun 1 comprises a high-pressure pipe, as shown in fig. 3, one end of the high-pressure gun 1 is provided with a plug 34, as shown in fig. 8, the spraying device 4 comprises an outer cover 35, the outer cover 35 is connected to the gas ejector pipe 7 through a connecting flange 36, the other end of the outer cover 35 is provided with a spraying inclined surface 37, the spraying inclined surface 37 is provided with a rear check ring 38, the front side inside the outer cover 35 is provided with a front check ring 39, the front check ring 39 and the rear check ring 38 are both provided with films for blocking fire extinguishing powder, and the included angle of the spraying inclined surface 37 relative to the horizontal plane is 45-90 degrees.
As shown in fig. 6, the piston 8 includes a force-bearing head 40 and a trigger pipe 41, a seal ring groove 42 is formed in a side surface of the force-bearing head 40, a Y-shaped seal ring 30 is arranged in the seal ring groove 42, a vertical vent pipe 43 communicating an outside of the force-bearing head with an inside of the trigger pipe 41 is arranged on the force-bearing head 40, so that high-pressure gas can be sprayed out through a center of the piston, thereby facilitating uniform spraying of fire extinguishing powder, and a step edge 44 is arranged at a rear end of the trigger pipe 41, as shown in fig. 2, the step edge 44 is aligned with the steel ball storage groove 27.
As shown in FIG. 1, the hanging device 5 comprises a first hanger rod 45 for hanging the trigger bar 3, a second hanger rod 46 fixed on the gas lance 7 and a third hanger rod 47 fixed on the outer cover 35, wherein a sliding sleeve 48 is arranged at the bottom of the first hanger rod 45, and the trigger bar 3 is arranged in the sliding sleeve 48.
The using method comprises the following steps: when the device is transported and installed, the safety nail 24 is in a fastening state, the safety nail 24 extrudes the sliding rod 22, and after the installation is finished, the safety nail 24 is loosened.
The flame-retardant and explosion-proof working principle of the device during gas explosion is as follows: after explosion occurs, air shock waves reach the device along a roadway, firstly reach the trigger plate 6 and push the trigger rod 3 to slide backwards, the trigger rod 3 pushes the sliding sleeve 10 to slide backwards, the sliding rod 22 fixed with the sliding sleeve 10 slides backwards to drive the one-way trigger sliding sleeve 9 to slide backwards, the steel ball trigger groove 26 installed in a staggered mode is aligned with the steel ball storage groove 27, the piston 8 is stressed backwards under the action of high-pressure gas under a normal state and is clamped by the steel ball 28, after the steel ball trigger groove 26 is aligned with the steel ball storage groove 27, the steel ball 28 enters the steel ball trigger groove 26 under the pushing of the piston 8, the stress head 40 of the piston 8 enters the injection cavity 18, the high-pressure gas is sprayed out from the air injection hole 20 and the trigger pipe 41 connected with the vertical 43, the high-pressure gas acts on fire extinguishing powder in the outer cover 35, the fire extinguishing powder is sprayed out in the roadway to form a uniformly distributed state, and further propagation of flames is blocked.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the product form and style of the above embodiments, and any coal mine flame retardant and explosion suppression device according to the claims of the present invention and any suitable changes or modifications thereof by those skilled in the art shall fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a fire-retardant flame proof device in colliery, includes high-pressure gun, trigger device, trigger bar and injection apparatus, its characterized in that: the high-pressure gun is arranged on one side of the trigger device, the injection device is arranged on the other side of the trigger device, the explosion suppression device is installed at the top in a coal mine tunnel through a hanging device, fire extinguishing powder is arranged in the injection device, the trigger rod is installed at the top in the coal mine tunnel through the hanging device, one end of the trigger rod is provided with a trigger plate, and the other end of the trigger rod is installed on the trigger device;
the trigger device comprises an air injection pipe, a piston, a one-way trigger sliding sleeve and a sliding sleeve, wherein the air injection pipe comprises an air inlet section, a connecting section, an air injection section and a trigger section, the air inlet section is fixedly connected to one side close to the high-pressure gun, the connecting section is connected to the rear side of the air inlet section, the air injection section is fixedly connected to the rear side of the connecting section, the trigger section is connected to the rear side of the air injection section, the piston is arranged in the air injection pipe, the trigger section is arranged in the one-way trigger sliding sleeve, the sliding sleeve is sleeved on the high-pressure gun, and the sliding sleeve is connected with the one-way trigger sliding sleeve through a sliding rod;
the high-pressure gun comprises a high-pressure pipe, a plug is arranged at one end of the high-pressure gun, the spraying device comprises an outer cover, the outer cover is connected to the air injection pipe through a connecting flange, a spraying inclined plane is arranged at the other end of the outer cover, a rear check ring is arranged on the spraying inclined plane, a front check ring is arranged on the front side inside the outer cover, films used for plugging fire extinguishing powder are arranged on the front check ring and the rear check ring, and the included angle of the spraying inclined plane relative to the horizontal plane is 45 to 90 degrees.
2. The flame-retardant and explosion-proof device for the coal mine according to claim 1, which is characterized in that: the gas injection pipe is internally provided with a ventilation cavity, the ventilation cavity comprises a gas inlet cavity, a piston mounting cavity, an injection cavity and a middle gas injection cavity, the gas inlet cavity is arranged in the gas inlet section, the piston mounting cavity is arranged in the connecting section, the injection cavity is arranged in the gas injection section, and the middle gas injection cavity is arranged in the trigger section.
3. The flame-retardant and explosion-proof device for the coal mine according to claim 1 or 2, which is characterized in that: the air injection section be equipped with a plurality of fumarole along pipeline circumference, the axis of fumarole be 30 to 60 degrees with the axis contained angle of jet-propelled pipe, the one-way sliding sleeve that triggers link firmly on the slide bar through the fixed block, the linkage segment on be equipped with the slide opening, the slide bar pass the slide opening, the upside fixed connection of linkage segment on cable suspension device.
4. The flame-retardant and explosion-proof device for the coal mine according to claim 3, characterized in that: the safety nail is detachably arranged in the safety nail hole and extrudes the sliding rod.
5. The flame-retardant and explosion-proof device for the coal mine according to claim 1, characterized in that: the one-way trigger sliding sleeve is internally provided with a steel ball trigger groove, the trigger section is provided with a steel ball storage groove, a steel ball is arranged in the steel ball storage groove, the steel ball trigger groove and the steel ball storage groove are installed in a staggered mode, and the steel ball trigger groove is closer to the high-pressure gun relative to the steel ball storage groove.
6. The flame-retardant and explosion-proof device for the coal mine according to claim 1, which is characterized in that: the front side of jet-propelled pipe be equipped with the manometer connector, the front end of manometer connector connect the high-pressure rifle, the manometer connector other end connect the jet-propelled pipe, the manometer connector be equipped with Y type sealing washer with the junction of jet-propelled pipe, the manometer connector on still be equipped with and be used for the gas filling of high-pressure rifle and the manometer connector of connecting the manometer, the manometer connector still be equipped with the manometer cover outward.
7. The flame-retardant and explosion-proof device for the coal mine according to claim 6, wherein: the piston comprises a stress head and a trigger pipe, a seal ring groove is formed in the side face of the stress head, a Y-shaped seal ring is arranged in the seal ring groove, a vertical vent pipe which is communicated with the outside of the stress head and the inside of the trigger pipe is arranged on the stress head, a step edge is arranged at the rear end of the trigger pipe, and the step edge is aligned with the steel ball storage groove.
8. The flame-retardant and explosion-proof device for the coal mine according to claim 1, which is characterized in that: the hanging device comprises a first hanging rod used for hanging the trigger rod, a second hanging rod fixed on the gas ejector pipe and a third hanging rod fixed on the outer cover, wherein a sliding sleeve is arranged at the bottom of the first hanging rod, and the trigger rod is arranged in the sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110131006.2A CN112761710B (en) | 2021-01-30 | 2021-01-30 | Flame-retardant and explosion-proof device for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110131006.2A CN112761710B (en) | 2021-01-30 | 2021-01-30 | Flame-retardant and explosion-proof device for coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112761710A CN112761710A (en) | 2021-05-07 |
| CN112761710B true CN112761710B (en) | 2023-02-28 |
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Family Applications (1)
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| CN202110131006.2A Active CN112761710B (en) | 2021-01-30 | 2021-01-30 | Flame-retardant and explosion-proof device for coal mine |
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