CN112709592A - Mining automatic flame proof device based on external triggering - Google Patents
Mining automatic flame proof device based on external triggering Download PDFInfo
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- CN112709592A CN112709592A CN202110131073.4A CN202110131073A CN112709592A CN 112709592 A CN112709592 A CN 112709592A CN 202110131073 A CN202110131073 A CN 202110131073A CN 112709592 A CN112709592 A CN 112709592A
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- 239000011261 inert gas Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 abstract description 36
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention relates to the technical field of underground explosion suppression of coal mines, in particular to an automatic explosion suppression device based on external triggering, which comprises a fixed seat, the fixed seat is provided with a spraying powder storage bin, a high-pressure gas storage bin for injecting gas to the spraying powder storage bin and a trigger mechanism for triggering the high-pressure gas storage bin to be opened, the high-pressure gas storage bin is positioned outside the spraying powder storage bin and is fixedly connected with the spraying powder storage bin, the high-pressure gas storage bin is provided with a piston and a trigger rod for limiting the piston, the trigger mechanism is positioned at the outer sides of the spraying powder storage bin and the high-pressure gas storage bin and is used for clamping or releasing the trigger rod, through the trigger mechanism is external, trigger mechanism sets up in the outside of eruption storage powder storehouse and high-pressure gas storage storehouse, does not occupy the space of eruption storage powder storehouse, has improved the space utilization who erupts the storage powder storehouse, can hold the fire extinguishing material of bigger volume. And meanwhile, the trigger mechanism is arranged on the outer side, so that later maintenance is facilitated.
Description
Technical Field
The invention relates to the technical field of underground explosion suppression of coal mines, in particular to an automatic explosion suppression device based on external triggering.
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 ℃ and the instantaneous temperature of coal dust explosion can reach 2300-2500 ℃ at high temperature, so that mine fire, equipment burning and personnel burning can be caused; secondly, high pressure is generated, the gas pressure after gas explosion is 7-10 times of the gas pressure before explosion through experiments 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; and fourthly, the shock wave has the propagation speed of 2340m/s, so that the equipment, the bracket and the personnel are damaged.
The mining flame-proof and 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, and triggers the flame-proof and flame-proof device when the air shock waves arrive, so that fire extinguishing powder is released in advance, and the flames are blocked to prevent other secondary disasters from occurring under mines.
In the prior granted patent CN 103291349B, a bidirectional-triggering coal mine underground automatic explosion-proof device is disclosed, the invention discloses that internal parts are triggered through shock waves, the triggered parts are all arranged inside an outer cover, and the installation of the triggered parts can occupy partial space of the outer cover. When the flame-retardant fire-extinguishing material is sprayed, the trigger part is positioned between the middle outer cover and the outer cover, so that the spraying effect is influenced to a certain extent, and the smooth and comprehensive spraying of the flame-retardant material is hindered to a certain extent; meanwhile, under the condition that the volume of the outer cover is fixed, the triggering part is positioned in the outer cover to occupy partial space, so that the volume of the fire extinguishing material is reduced, and the explosion-proof effect is limited; in addition, internal triggering brings inconvenience to construction inspectors, and the effectiveness of the internal triggering cannot be accurately determined.
Therefore, there is a need for an improvement to overcome the deficiencies of the prior art.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an automatic explosion-proof device based on external triggering.
The technical scheme of the invention is as follows:
the utility model provides an automatic flame proof device based on external trigger, includes fixing base 12, its characterized in that: fixing base 12 is equipped with eruption powder storage bin 4, to eruption powder storage bin 4 jet-propelled high pressure gas storage bin 6 with trigger high pressure gas storage bin 6 open's trigger mechanism, high pressure gas storage bin 6 is located eruption powder storage bin 4 outside and with eruption powder storage bin 4 fixed connection, high pressure gas storage bin 6 is equipped with piston 5 and carries out spacing trigger bar 10 to piston 5, trigger mechanism is located eruption powder storage bin 4 with the outside of high pressure gas storage bin 6, trigger mechanism is used for right trigger bar 10 carries out chucking or release.
Fixing base fixed mounting passes through fixed modes such as bolt or screw at the lower extreme of fixing base and fixes eruption powder storage bin, high-pressure gas storage bin and trigger mechanism inside the tunnel, erupts powder storage bin and high-pressure gas storage bin order fixed connection to high-pressure gas storage bin can be to the inside high-pressure gas that sprays of eruption powder storage bin, realizes eruption powder storage bin inside the eruption of putting out a fire the eruption of powder. The piston for controlling the high-pressure gas to be sprayed to the spraying powder storage bin is arranged in the high-pressure gas storage bin, and can move relative to the high-pressure gas storage bin. The high-pressure gas storage bin is provided with a trigger rod for limiting the piston, and the trigger rod is used for limiting the piston. The piston is limited by the trigger rod under normal conditions, and high-pressure gas in the high-pressure gas storage bin cannot be sprayed to the powder spraying and storing bin. The trigger mechanism is arranged at the outer sides of the spraying powder storage bin and the high-pressure gas storage bin, does not occupy the space of the spraying powder storage bin and the high-pressure gas storage bin, and can improve the volume of the fire extinguishing powder in the spraying powder storage bin. When the trigger mechanism receives the explosion impact wave, the trigger mechanism changes the position state of the trigger rod by releasing the trigger rod, the limit of the trigger rod on the piston is released, the piston moves under the pharmacological push of high-pressure gas, and then the high-pressure gas in the high-pressure gas storage bin is sprayed to the spraying powder storage bin from the gas outlet, so that the triggering is realized.
The whole trigger mechanism is located the outside of eruption powder storage bin and high pressure gas storage bin, does not occupy the space of the inside powder of putting out a fire of eruption powder storage bin, realizes external triggering, triggers fast and stably. Under any condition, construction or maintenance personnel can check the effectiveness of the trigger mechanism at any time, the follow-up construction and maintenance efficiency is improved, and the maintenance cost is reduced.
Preferably, the trigger mechanism includes a transmission rod 3 movable relative to the trigger rod 10 and a trigger positioning plate 11 fixedly connected to the transmission rod 3.
The fixing frame of the trigger mechanism is welded or connected with the fixing seat through bolts, the effect of stabilizing the trigger mechanism is achieved, the shock wave receiving portion is installed at one end of the transmission rod, and the shock wave receiving portion is a receiving plate or a receiving disc. The transmission rod is installed inside the sliding sleeve, the sliding sleeve is welded or fixedly connected with a fixing frame of the trigger mechanism through a bolt, and after the transmission rod receives shock wave impact, the transmission rod can slide relatively along the sliding sleeve. Therefore, the shock wave receiving efficiency is improved, the shock wave can be rapidly and accurately detected, and the rapid explosion suppression can be realized.
The position of the transmission rod close to the trigger rod of the high-pressure gas storage bin corresponds to the trigger positioning plate, the trigger positioning plate is clamped on the trigger rod under normal conditions, the trigger positioning plate is prevented from loosening, the piston is limited through the clamping trigger rod, and the piston is prevented from moving to cause air injection of the high-pressure gas storage bin. When the explosion impact occurs, namely the transmission rod and the trigger positioning plate positioned on the transmission rod move simultaneously, the trigger rod is released, the trigger rod is in contact with the piston to limit the piston, the piston moves, and the high-pressure gas storage bin injects gas to realize explosion-proof operation.
As a preferred technical scheme, the diameters of two ends of the piston are different, and the diameter of one end, close to the spraying powder storage bin, of the piston is smaller than that of one end, far away from the spraying powder storage bin, of the piston. After the piston is limited by the trigger release rod, under the compression of high-pressure gas, the piston can slide to one side away from the spraying powder storage bin under the compression of the high-pressure gas, the gas outlet at one end, close to the spraying powder storage bin, of the high-pressure gas storage bin is opened at the moment, the high-pressure gas enters the spraying powder storage bin from the gas outlet of the high-pressure gas storage bin and impacts the spraying powder storage bin, after a protective film of the spraying powder storage bin is broken by the impact of the high-pressure gas, fire extinguishing powder in the spraying powder storage bin is separated, and an explosion-proof area is formed.
As a preferred technical solution, the trigger positioning plate 11 is provided with a hole 15, and the trigger rod 10 can extend into the hole 15.
Set up the hole of a plurality of parallels on triggering the locating plate, inside the trigger bar can the deep-hole, drives the removal of trigger locating plate at the transfer lever, the trigger bar can block in the hole inside to in constantly stretching into the hole, realize the release to the trigger bar, and then remove spacingly to the piston. The size of the hole can accommodate the trigger rod, and the shape of the hole corresponds to the direction of the trigger rod and can be a round hole, an arc-shaped hole, a square hole and the like. The cross-sectional shape of the trigger bar may be circular, arc, square, or the like.
As a preferred technical solution, the trigger positioning plate 11 is provided with a protrusion 16, the top end of the trigger rod 10 is provided with a groove 17, and the protrusion 16 can extend into the groove 17.
The trigger positioning plate is provided with a protrusion, the top end of the trigger rod is provided with a groove, the protrusion can go deep into the groove, and the protrusion is in contact with the position, without the groove, of the top end of the trigger rod in a non-trigger state. After the transmission rod drives the movable trigger positioning plate to move, the trigger positioning plate moves relative to the trigger rod, the protrusion on the trigger positioning plate can extend into the groove of the trigger rod, the trigger rod is released along with the continuous extension of the protrusion, and the limit of the trigger rod on the piston is relieved. The groove can accommodate the bulge, the shape of the bulge corresponds to that of the groove, and the cross section of the bulge can be circular, arc-shaped or square and the like.
As a preferable technical scheme, one end of the piston 5 is in contact with the trigger rod 10, and a chamfer 18 is arranged at the contact end of the piston 5 and the trigger rod 10.
The trigger rod limits the piston, the piston is provided with a chamfer at the contact end of the piston and the trigger rod, and the piston slides with the trigger rod. Under the effect of the no chucking power of trigger bar, the piston can promote the trigger bar and remove along the guide way of installation trigger bar, and the moving direction of piston is mutually perpendicular with the moving direction of trigger bar, and is different according to the pressure of high-pressure gas storage storehouse, can calculate the inclination of design chamfer, also sets up inclined plane or cambered surface in the one end of trigger bar and piston contact, realizes under the effect of no external resistance, and the piston can be realized to the pressure of high-pressure gas storage storehouse and promotes the trigger bar and remove.
As a preferable technical solution, one end of the trigger rod 10 is in contact with the piston 5, and a contact end of the trigger rod 10 and the piston 5 is an arc surface 19 or an inclined surface 20.
As a further preferable technical solution, the triggering rod 10 is movably arranged in a guiding groove 14 on the outer wall of the high-pressure gas storage bin 6. The trigger lever 10 is slidable along the guide groove 14.
A guide groove is welded and fixed on the outer wall of the high-pressure gas storage bin 6, a trigger rod is installed in the guide groove and can stretch into the guide groove and be inserted into the outer wall of the high-pressure gas storage bin, and the trigger rod is in contact with a piston to limit the piston. The guide groove can realize the fixed and movable guide of the trigger rod, prevent the phenomenon of locking caused by the force in other directions and ensure the normal sliding of the trigger rod.
As a preferred technical scheme, the trigger lever 10 is provided with a spring limiting plate 21, a spring 9 is arranged between the spring limiting plate 21 and the outer wall of the high-pressure gas storage bin 6, and the spring 9 is used for realizing that the trigger lever 10 tightly pushes against a trigger positioning plate 11 of the trigger mechanism.
The spring limiting plate is welded on the trigger rod, the spring 9 is arranged between the spring limiting plate 21 and the outer wall of the high-pressure gas storage bin 6, and the spring is used for realizing the rapid movement of the trigger rod relative to the guide groove 14 when the trigger positioning plate moves relative to the trigger rod, rapidly realizing the release of the trigger rod and rapidly releasing the limit on the piston. And because the trigger bar is easy to rust with other parts when being in a humid environment for a long time, the trigger failure is avoided.
As a preferred technical scheme, the connecting end of the spraying powder storage bin 4 and the high-pressure gas storage bin 6 is circular, oval or polygonal, and the other end is oval or polygonal; the volume of the high-pressure gas storage bin 6 is 1L-100L, and the gas in the high-pressure gas storage bin 6 is inert gas andor air; the volume of the eruption powder storage bin 4 is 1L-500L.
As a preferred technical scheme, the open end of the eruption powder storage bin is in an elliptical shape, wherein the ratio range of the minor axis to the major axis of the ellipse is 1: 100-0.99, and the open end of eruption powder storage bin sets up the scarf, and the scarf is inclined downwards, receives the influence of tunnel height, and the open end of eruption powder storage bin can cause to collide the head injury to constructor, consequently designs the open end for oval shape, reduces eruption powder storage bin's height, increases eruption powder storage bin's width, under the high circumstances that influences the construction of avoiding flame proof device, can also increase the eruption area.
As a preferred technical scheme, one end of the trigger mechanism is provided with a shock wave receiving part 1, and the trigger mechanism triggers one high-pressure gas storage bin 6 to be opened or simultaneously triggers two high-pressure gas storage bins 6 which are symmetrically distributed to be opened.
One end of the trigger mechanism is provided with a shock wave receiving plate, and the trigger mechanism can trigger a high-pressure gas storage bin 6 by receiving shock waves on one side to realize unidirectional receiving and unidirectional burst.
One end of the trigger mechanism is provided with a shock wave receiving plate, and the trigger mechanism can simultaneously trigger two high-pressure gas storage bins 6 which are symmetrically distributed by receiving shock waves at one side, so that unidirectional receiving and bidirectional eruption are realized.
As a preferred technical scheme, both ends of the trigger mechanism are provided with shock wave receiving parts 1, and the trigger mechanism triggers one high-pressure gas storage bin 6 to be opened or triggers two high-pressure gas storage bins 6 which are symmetrically distributed to be opened simultaneously.
The two ends of the trigger mechanism are provided with shock wave receiving plates, and the trigger mechanism can trigger the high-pressure gas storage bin 6 by receiving shock waves at any one end or two ends, so that bidirectional receiving and unidirectional eruption are realized.
The two ends of the trigger mechanism are provided with shock wave receiving plates, and the trigger mechanism can trigger the two high-pressure gas storage bins which are symmetrically distributed at the same time by receiving shock waves at any one end or at the two ends, so that bidirectional receiving and bidirectional burst are realized.
According to the automatic explosion-proof device based on external triggering, the triggering mechanism is arranged outside the powder spraying and storing bin and the high-pressure gas storage bin, so that the space of the powder spraying and storing bin is not occupied, the space utilization rate of the powder spraying and storing bin is improved, and a larger-volume fire extinguishing material can be accommodated. Meanwhile, the trigger mechanism is arranged on the outer side, so that later maintenance is facilitated, the maintenance efficiency is improved, and the effectiveness of the explosion-proof device is convenient to check.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of the present invention;
FIG. 3 is a schematic structural diagram according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram of a third embodiment of the present invention;
FIG. 5 is a diagram illustrating a fourth embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a fifth embodiment of the present invention;
FIG. 7 is a schematic diagram of a sixth configuration of an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a seventh embodiment of the present invention;
FIG. 9 is an enlarged view of the B-direction structure of the powder spraying and storing bin of the invention;
FIG. 10 is an enlarged view of the powder-storing compartment of the invention in the direction of C;
wherein, 1 impact receiving part, 2 adjust hang, 3 transfer bar, 4 eruption powder storage storehouses, 5 pistons, 6 high pressure gas storage storehouses, 7 manometer, 8 gas charging valve, 9 springs, 10 trigger bars, 11 trigger locating plates, 12 fixing seats, 13 sealing covers, 14 guide grooves, 15 holes, 16 bulges, 17 grooves, 18 chamfers, 19 cambered surfaces, 20 inclined surfaces and 21 spring limiting rods.
Detailed Description
In order to make the technical means, technical features, objects and technical effects of the present invention easily understandable, the present invention is further described below with reference to the specific drawings.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of bidirectional receiving bidirectional triggering of an automatic explosion suppression device based on external triggering in the present invention.
As shown in fig. 1, a spraying powder storage bin 4, a high-pressure gas storage bin 6 for injecting gas into the spraying powder storage bin 4, and a trigger mechanism for triggering the high-pressure gas storage bin 6 to open are fixedly mounted on the fixing base 12, and the pressure gas storage bin 6 is located outside the spraying powder storage bin 4 and is fixedly connected with the spraying powder storage bin 4. One of them high pressure gas storage storehouse 6 and eruption powder storage storehouse 4 constitute a set of explosion-proof equipment, and another high pressure gas storage storehouse 6 and eruption powder storage storehouse 4 constitute another explosion-proof equipment, and two sets of explosion-proof equipment orientation are opposite, all realize triggering through same trigger mechanism moreover.
The trigger mechanism comprises a transmission rod 3 which can move relative to a trigger rod 10 and a trigger positioning plate 11 fixedly connected with the transmission rod 3.
The fixing frame of the trigger mechanism is welded or connected with the fixing base 12 through bolts, the effect of stabilizing the trigger mechanism is achieved, the shock wave receiving parts 1 are arranged at the two ends of the transmission rod 3, and the shock wave receiving parts 1 are receiving plates or receiving discs. Transmission rod 3 installs inside sliding sleeve or U-shaped board, and sliding sleeve or U-shaped board and trigger mechanism's mount welding or bolt fixed connection, and transmission rod 3 receives the shock wave and strikes the back, can slide along sliding sleeve or U-shaped board relative slip.
As shown in fig. 2, two trigger positioning plates 11 are welded or bolted to the transmission rod 3, a hole 15 is formed in the trigger positioning plate 11, and the lower end of the trigger positioning plate 11 is in close contact with the trigger rod 10, and the trigger rod 10 is located outside the hole 15. The trigger rod 10 is slidably mounted in the guide groove 14, the guide groove 14 is welded or in threaded connection with the high-pressure gas storage bin 6, the trigger rod 10 penetrates through the inner wall of the high-pressure gas storage bin 6 to be in contact with the piston 5, a chamfer 18 is arranged on the piston 5, and an arc surface 19 corresponding to the chamfer 18 is arranged on the trigger rod 10. Two trigger positioning plates 11 are arranged on one transmission rod 3, and two trigger rods 10 are controlled to control the movement of two facing pistons 5.
In this embodiment, the diameters of the two ends of the two symmetrically distributed pistons are different, as shown in fig. 2, the diameter of the left end of the left piston 5 is smaller than that of the right end, and under the limiting action of the non-trigger rod 10, the piston 5 can move to the right side under the pressure of the high-pressure gas in the high-pressure gas storage bin 6, and the piston on the right side moves to the left.
As shown in fig. 1, when explosion occurs on the left side or the right side or both the left side and the right side, the shock wave receiving plate receives shock waves generated by the explosion, the impact force generated by the shock waves drives the transmission rod 3 to move leftwards or rightwards, the trigger positioning plate 11 on the transmission rod 3 also moves, the trigger positioning plate 11 moves relative to the trigger rod 10, and along with the movement of the trigger positioning plate 11, the trigger rod 10 enters the hole 15 on the trigger positioning plate 11. When the trigger lever 10 completely just corresponds with the hole 15, the trigger lever 10 is because of receiving the extrusion effort of piston 5, can produce relative slip on the slope contact surface of trigger lever 10 and piston 5, high-pressure gas oppresses piston 5 to remove to the pressure of piston, trigger lever 10 receives ascending power this moment, the trigger lever moves upwards along guide way 14 and enters into inside the hole 15, the spacing of piston 5 is relieved, the gas outlet of high-pressure gas storage storehouse 6 is opened, high-pressure gas enters into eruption powder storage storehouse 4 inside, then the sealed cowling 13 of eruption powder storage storehouse 4 is broken through to the impact force, spout inside the tunnel, form the vaporific region of powder of putting out a fire, hinder and put out explosion flame frontal surface, make the explosion stop propagating in the tunnel rapidly.
The flame-proof medium is sprayed in the reverse flame propagation direction, so that combustible substances are prevented from participating in explosion, a bidirectional flame-proof effect is achieved, secondary explosion is prevented from being generated, a continuous flame-proof effect is exerted, explosion loss is effectively and reliably reduced, and casualties are reduced.
Trigger mechanism sets up in the outside of high pressure gas storage storehouse 6 and eruption powder storage storehouse 4 simultaneously, has avoided trigger mechanism to occupy the volume of eruption powder storage storehouse 4, has increased the inside fire-extinguishing medium memory space of eruption powder storage storehouse 4, and external trigger mechanism can make things convenient for constructor to inspect the validity moreover, improves work efficiency, reduces cost of maintenance.
Example two:
as shown in fig. 3, the difference between the present embodiment and the first embodiment is:
a group of high-pressure gas storage bins 6 and a spraying powder storage bin 4 are arranged, and shock wave receiving plates are arranged at two ends of a trigger mechanism, so that bidirectional receiving and unidirectional spraying are realized. In fig. 3, the left-hand firing is performed, but the right-hand firing may be performed.
Example three:
as shown in fig. 4, the difference between the present embodiment and the first embodiment is:
one end of the trigger mechanism is provided with a shock wave receiving plate, a group of high-pressure gas storage bins 6 and a spraying powder storage bin 4 are arranged, and unidirectional spraying receiving is achieved by receiving shock waves on one side. In fig. 4, the left-side receives the left-side burst, and may be set to receive the right-side burst on the left side, the left-side burst on the right side, or the right-side burst on the right side.
Example four:
as shown in fig. 5, the difference between the present embodiment and the first embodiment is:
and one end of the trigger mechanism is provided with a shock wave receiving plate, and the one end of the trigger mechanism is impacted by shock waves to realize one-way receiving and two-way eruption. In fig. 5, the shock wave receiving plate may be provided on the left side, or on the right side.
Example five:
as shown in fig. 6, the present embodiment is different from the other embodiments in that:
the trigger positioning plate 11 is provided with a protrusion 16, the top end of the trigger rod 10 is provided with a groove 17, and the protrusion 16 can extend into the groove 17.
A protrusion 16 is arranged on the trigger positioning plate 11, a groove 17 is arranged at the top end of the trigger rod 10, the protrusion 16 can go deep into the groove 17, and in a non-trigger state, the protrusion 16 is in contact with the position without the groove 17 at the top end of the trigger rod 10. After the transmission rod 3 drives the trigger positioning plate 11 to move, the trigger positioning plate 11 moves relative to the trigger rod 10, the protrusion 16 on the trigger positioning plate 11 can extend into the groove 17 of the trigger rod 10, the trigger rod 10 is released along with the continuous extension of the protrusion 16, and the limit of the trigger rod 10 on the piston 5 is released. The groove 17 can accommodate the protrusion 16, the shape of the protrusion 16 corresponds to the shape of the groove 17, and the cross section of the protrusion 16 can be circular, arc-shaped or square and the like.
Example six:
as shown in fig. 7, the present embodiment is different from the other embodiments in that:
one end of the trigger rod 10 is in contact with the piston 5, and the contact end of the trigger rod 10 and the piston 5 is an inclined plane 20.
The slope 20 of the trigger lever 10 is the same as the slope of the chamfer 18 of the piston 5, and the trigger lever 10 may be in point contact, line contact or surface contact with the piston 5.
Example seven:
as shown in fig. 8, the present embodiment is different from the other embodiments in that:
the trigger rod 10 is provided with a spring limiting plate 21, a spring 9 is arranged between the spring limiting plate 21 and the outer wall of the high-pressure gas storage bin 6, and the spring 9 is used for achieving that the trigger rod 10 tightly pushes against a trigger positioning plate 11 of the trigger mechanism.
The spring limiting plate is welded on the trigger rod, the spring 9 is arranged between the spring limiting plate 21 and the outer wall of the high-pressure gas storage bin 6, and the spring is used for realizing the rapid movement of the trigger rod relative to the guide groove 14 when the trigger positioning plate moves relative to the trigger rod, rapidly realizing the release of the trigger rod and rapidly releasing the limit on the piston. And because the trigger bar is easy to rust with other parts when being in a humid environment for a long time, the trigger failure is avoided.
Example eight:
as shown in fig. 1, 9 and 10, fig. 9 is an enlarged view of the spraying hopper 4 in fig. 1 from the direction B, and fig. 10 is an enlarged view of the spraying hopper 4 in fig. 1 from the direction C. As shown in fig. 10, the open end of the spray powder storage bin 4 is elliptical, wherein the ratio of the minor axis to the major axis of the ellipse ranges from 1: 100-0.99. As shown in fig. 1, a chamfered surface is provided at the right opening end of the spray powder storage hopper 4, and the chamfered surface is inclined downward. Receive the influence of tunnel height, the open end of eruption powder storage storehouse 4 can lead to the fact the injury of meeting to the constructor, consequently designs the open end for oval shape, reduces eruption powder storage storehouse 4's height, and the width of increase eruption powder storage storehouse 4 can also increase the eruption area under the condition of avoiding the high influence construction of flame proof device.
In summary, the embodiments of the present invention are merely exemplary and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made according to the content of the claims of the present invention should fall within the technical scope of the present invention.
Claims (11)
1. The utility model provides an automatic flame proof device based on external trigger, includes fixing base (12), its characterized in that: fixing base (12) are equipped with eruption storage powder storehouse (4), to eruption storage powder storehouse (4) jet-propelled high pressure gas storage storehouse (6) and trigger high pressure gas storage storehouse (6) are opened trigger mechanism, high pressure gas storage storehouse (6) are located eruption storage powder storehouse (4) outside and with eruption storage powder storehouse (4) fixed connection, high pressure gas storage storehouse (6) are equipped with piston (5) and carry out spacing trigger bar (10) to piston (5), trigger mechanism is located eruption storage powder storehouse (4) with the outside of high pressure gas storage storehouse (6), trigger mechanism is used for right trigger bar (10) carry out chucking or release.
2. The automatic explosion suppression device based on external triggering according to claim 1, characterized in that: the trigger mechanism comprises a transmission rod (3) which can move relative to the trigger rod (10) and a trigger positioning plate (11) which is fixedly connected with the transmission rod (3).
3. The automatic explosion suppression device based on external triggering according to claim 2, characterized in that: the trigger positioning plate (11) is provided with a hole (15), and the trigger rod (10) can extend into the hole (15).
4. The automatic explosion suppression device based on external triggering according to claim 2, characterized in that: the trigger positioning plate (11) is provided with a protrusion (16), the top end of the trigger rod (10) is provided with a groove (17), and the protrusion (16) can extend into the groove (17).
5. The automatic explosion suppression device based on external triggering according to claim 1, characterized in that: one end of the piston (5) is in contact with the trigger rod (10), and a chamfer (18) is arranged at the contact end of the piston (5) and the trigger rod (10).
6. The automatic explosion suppression device based on external triggering according to claim 1, characterized in that: one end of the trigger rod (10) is in contact with the piston (5), and the contact end of the trigger rod (10) and the piston (5) is an arc surface (19) or an inclined surface (20).
7. The automatic explosion suppression device based on external triggering according to claim 1, characterized in that: the trigger rod (10) is movably arranged in a guide groove (14) in the outer wall of the high-pressure gas storage bin (6), and the trigger rod (10) can slide along the guide groove (14).
8. The automatic explosion suppression device based on external triggering according to claim 1, characterized in that: the trigger rod (10) is provided with a spring limiting plate (21), a spring (9) is arranged between the spring limiting plate (21) and the outer wall of the high-pressure gas storage bin (6), and the spring (9) is used for achieving the fact that the trigger rod (10) is tightly propped against a trigger positioning plate (11) of the trigger mechanism.
9. The automatic explosion suppression device based on external triggering according to claim 1, characterized in that: the connecting end of the eruption powder storage bin (4) and the high-pressure gas storage bin (6) is circular, oval or polygonal, and the other end of the eruption powder storage bin is oval or polygonal; the volume of the high-pressure gas storage bin (6) is 1L-100L, and the gas in the high-pressure gas storage bin (6) is inert gas andor air; the volume of the eruption powder storage bin (4) is 1L-500L.
10. An automatic explosion suppression device based on external triggering according to any one of claims 1 to 9, characterized in that: one end of the trigger mechanism is provided with a shock wave receiving part (1), and the trigger mechanism triggers one high-pressure gas storage bin (6) to be opened or triggers two symmetrically distributed high-pressure gas storage bins (6) to be opened simultaneously.
11. An automatic explosion suppression device based on external triggering according to any one of claims 1 to 9, characterized in that: the shock wave receiving parts (1) are arranged at two ends of the trigger mechanism, the trigger mechanism triggers one high-pressure gas storage bin (6) to be opened or the trigger mechanism triggers two high-pressure gas storage bins (6) which are symmetrically distributed to be opened simultaneously.
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| CN202110131073.4A CN112709592A (en) | 2021-01-30 | 2021-01-30 | Mining automatic flame proof device based on external triggering |
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