A self-produced explosion suppression powder spraying device for mining

Abstract

The application provides a mine self-production type explosion suppression powder spraying device, and belongs to the technical field of explosion suppression equipment. The device comprises a pipeline and a shell. One end of the shell is provided with a junction box cover and a bottom disc. The shell is internally provided with a gas generator and an inner container. An exhaust hole is formed in the outer wall of the inner container. The other end of the shell is provided with a butterfly nozzle. The device further comprises a lifting assembly for shielding the exhaust hole, and a loosening assembly for dispersing dry powder in the shell. The device has the beneficial effect that the linkage of the lifting assembly and the gas generator can trigger the movement of the protective cylinder and the operation of the loosening assembly. The inner container exhaust hole is cleaned by the barb bristles to avoid dry powder blockage and ensure smooth gas flow. The dry powder is dispersed and agglomerated by rotating and stirring, and is uniformly sprayed by cooperating with the air pressure. The combination of the diffusion hole and the butterfly nozzle can make the dry powder cover the inside of the pipeline in a more dispersed and uniform state, thereby enhancing the fire extinguishing and explosion suppression effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of explosion suppression equipment, in particular to a mine self-generating explosion suppression powder spraying device. BACKGROUND

[0002] In the underground mining environment such as coal mine, due to the existence of a large number of flammable gas and dust, the explosion risk is extremely high, in order to protect the safety of production and personnel life safety, the mine pipeline explosion suppressor as an important safety equipment is widely used to suppress and prevent the occurrence of explosion accident, the working principle of explosion suppressor is usually when detecting potential explosion danger, such as gas concentration exceeding standard or dust concentration reaching explosion limit, sending signal to controller through sensor, controller triggers explosion suppressor to start, after explosion suppressor starts, gas generator produces a large amount of high temperature and high pressure gas, breaks the sealing diaphragm, and the dry powder explosion inhibitor in the cylinder is sprayed out under the action of pressure, covers the surface of the burning or explosive material, through chemical inhibition and physical isolation, breaks the combustion reaction chain, reduces the combustion speed, prevents explosion or reduces the explosion power.

[0003] In the prior art, the dry powder may be accumulated and caked due to self-weight, thereby causing low spraying efficiency, and the dry powder extinguishing agent stored for a long time may be easily caked due to moisture, the existing device is difficult to loosen in a targeted manner during spraying, so that the caked dry powder blocks the spraying channel or causes uneven spraying, cannot form effective coverage, and weakens the explosion suppression effect, and in the traditional device, the exhaust hole is directly exposed to the dry powder environment, and is easily blocked by dry powder particles or impurities after long-term use, so that the high-pressure gas generated by the gas generator cannot flow smoothly, it is difficult to form enough thrust to push the dry powder to spray, and the explosion suppression opportunity is delayed, how to invent a mine self-generating explosion suppression powder spraying device to solve these problems has become a problem to be solved by the technical personnel in the field. SUMMARY

[0004] In order to make up for the above shortcomings, the present application provides a mine self-generating explosion suppression powder spraying device, which aims to solve the problem that the existing device is difficult to loosen in a targeted manner during spraying, so that the caked dry powder blocks the spraying channel or causes uneven spraying, cannot form effective coverage, and weakens the explosion suppression effect, and the exhaust hole is easily blocked by dry powder particles or impurities after long-term use, so that the high-pressure gas generated by the gas generator cannot flow smoothly.

[0005] The present application is implemented as follows:

[0006] The present application provides a mine self-generating explosion suppression powder spraying device, which comprises a pipeline and a shell, one end of the shell is provided with a junction box cover and a bottom disc, the inside of the shell is provided with a gas generator and an inner container, the outer wall of the inner container is provided with an exhaust hole, the other end of the shell is provided with a butterfly nozzle, and the mine self-generating explosion suppression powder spraying device further comprises:

[0007] A pulling assembly is arranged inside the shell and used to shield the exhaust hole.

[0008] A loosening assembly is arranged inside the shell and used to loosen the dry powder inside the shell.

[0009] Preferably, one end of the shell is fixedly connected with the base plate, the other end of the shell is fixedly connected with the pipeline and the butterfly nozzle respectively, the butterfly nozzle is arranged inside the pipeline, a diaphragm is arranged between the shell and the butterfly nozzle, the end of the base plate away from the shell is detachably connected with the junction box cover, and the sidewall of the base plate is fixedly connected with the gas generator.

[0010] Preferably, the pulling assembly comprises a fixed cylinder, the fixed cylinder is fixedly sleeved on the outer wall of the inner container, the inner wall of the inner container is detachably connected with the base plate, the inner container is arranged outside the gas generator, the inside of the fixed cylinder is provided with a cylinder and a movable ring, and the inner wall of the fixed cylinder is slidably connected with the movable ring.

[0011] Preferably, the pulling assembly further comprises a moving frame and a connecting rod, one end of the connecting rod penetrates through the sidewall of the fixed cylinder and is fixedly connected with the movable ring, the other end of the connecting rod is fixedly connected with the moving frame, the moving frame is arranged on one side of the inner container, the side of the movable ring away from the connecting rod is fixedly connected with the cylinder, and one end of the cylinder is fixedly connected with the inner wall of the fixed cylinder.

[0012] Preferably, the pulling assembly further comprises a gas guide pipe and a protective cylinder, one end of the gas guide pipe is funnel-shaped, the other end of the gas guide pipe is cylindrical, one end of the gas guide pipe penetrates through the sidewall of the inner container and is fixedly connected with the moving frame, the protective cylinder is sleeved on the outer wall of the inner container, the outer wall of the protective cylinder is fixedly connected with an ear plate, the ear plate is fixedly connected with the connecting rod, and the inner wall of the protective cylinder is fixedly connected with barbed bristles.

[0013] Preferably, the side of the moving frame away from the gas guide pipe is fixedly connected with a pulling column, the outer wall of the pulling column is fixedly connected with a spiral slide strip, the sidewall of the pulling column is provided with a through hole, and the through hole is communicated with the gas guide pipe.

[0014] Preferably, the loosening assembly comprises a rotating frame and a rotating column, the rotating frame is rotatably connected with the inner wall of the shell, the rotating frame is fixedly connected with the outer wall of the rotating column, the sidewall of the rotating column is provided with a movable groove, and the inner wall of the movable groove is provided with a spiral sliding groove matched with the spiral slide strip.

[0015] Preferably, the inner wall of the movable groove is slidingly connected to the pulling column, a piston cavity is opened inside the rotating column, one end of the piston cavity is connected to the movable groove, the inner wall of the piston cavity is provided with a piston rod and a telescopic spring, the piston rod is arranged in a "T" shape, one end of the piston rod is slidingly connected to the inner wall of the piston cavity, the other end of the piston rod passes through the inner wall of the piston cavity, the telescopic spring is sleeved on the outside of the piston rod, and the two ends of the telescopic spring are respectively fixedly connected to the inner wall of the piston cavity and the side wall of the piston rod.

[0016] Preferably, an outer sleeve is fixedly connected to the outer wall of the rotating column, a loose rod is fixedly connected to the outer wall of the outer sleeve, and one end of the outer sleeve is communicated with the piston cavity.

[0017] Preferably, the loose component also includes a fixed plate, one side of the fixed plate is fixedly connected to one end of the piston rod, the other side of the fixed plate is fixedly connected to a cutting piece, a diffusion hole is opened on the side wall of the fixed plate, the side wall of the fixed plate is fixedly connected to an inner sleeve, the inner sleeve is slidably connected to the inner wall of the outer sleeve, and one end of the inner sleeve is connected to the diffusion hole.

[0018] The beneficial effects of the present invention are:

[0019] The mine-used self-produced explosion suppression powder spraying device of the present invention achieves multiple beneficial effects through structural optimization and functional coordination. First, through the electrical signal linkage between the pulling component and the gas generator, it is ensured that the movement of the protective tube and the operation of the loose component are triggered synchronously at startup, so that the protective tube cleans the exhaust hole of the inner tank through the barbed bristles during movement, avoiding blockage of dry powder and ensuring smooth gas circulation; secondly, the loose component breaks up the agglomerated dry powder through rotation and stirring, and realizes rapid and uniform spraying with the help of air pressure, ensuring that the explosion suppressant can be efficiently released at the early stage of explosion or combustion, and the spread of dangerous conditions is blocked in time. Moreover, through the linkage design of the rotating frame, rotating column and outer sleeve of the loose component, the dry powder can be continuously stirred during the spraying process to prevent deposition and agglomeration. At the same time, the cutting piece on the fixed plate can puncture the diaphragm, and the airflow ejected from the diffusion hole can further disturb the dry powder. Combined with the structural characteristics of the butterfly nozzle, the dry powder can cover the inside of the pipeline in a more dispersed and uniform state, thereby improving the contact efficiency between the explosion suppressant and the flame and enhancing the fire extinguishing and explosion suppression effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1is a whole structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application;

[0022] Figure 2 is a nozzle structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application;

[0023] Figure 3 is an outer cylinder half-section structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application;

[0024] Figure 4 is an outer cylinder internal structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application;

[0025] Figure 5 is a moving frame structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application;

[0026] Figure 6 is a rotating column structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application;

[0027] Figure 7 is a loose component structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application;

[0028] Figure 8 is a protective cylinder structure schematic diagram of a mine self-production type explosion suppression powder spraying device provided by the embodiment of the present application.

[0029] In the figure: 1, pipeline; 2, shell; 21, butterfly nozzle; 3, junction box cover; 4, base plate; 5, lifting assembly; 51, air cylinder; 52, movable ring; 53, moving frame; 54, gas guide pipe; 55, protective cylinder; 551, ear plate; 552, barbed bristles; 56, fixed cylinder; 57, connecting rod; 58, pulling column; 581, through hole; 59, spiral slide; 6, gas generator; 7, loose component; 71, rotating frame; 72, fixed plate; 721, cutting piece; 722, diffusion hole; 73, rotating column; 731, spiral chute; 732, movable groove; 733, piston cavity; 74, outer sleeve; 741, loose rod; 75, piston rod; 76, extension spring; 77, inner sleeve; 8, diaphragm; 9, inner container; 91, exhaust hole. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0031] Example 1

[0032] Reference Figures 1-8 A self-produced explosion suppression powder spraying device for mining includes a pipe 1 and a shell 2. One end of the shell 2 is provided with a junction box shield 3 and a chassis 4. The interior of the shell 2 is provided with a gas generator 6 and an inner liner 9. The outer wall of the inner liner 9 is provided with an exhaust hole 91. The other end of the shell 2 is provided with a butterfly nozzle 21. The device also includes:

[0033] The lifting component 5 is located inside the housing 2 and is used to cover the exhaust hole 91;

[0034] The loose component 7 is located inside the shell 2 and is used to break up the dry powder inside the shell 2 .

[0035] Furthermore; one end of the shell 2 is fixedly connected to the chassis 4, and the other end of the shell 2 is fixedly connected to the pipe 1 and the butterfly nozzle 21 respectively. The butterfly nozzle 21 is located on the inner side of the pipe 1. A diaphragm 8 is provided between the shell 2 and the butterfly nozzle 21. The end of the chassis 4 away from the shell 2 is detachably connected to the junction box shield 3, and the side wall of the chassis 4 is fixedly connected to the gas generator 6.

[0036] The working process of the explosion suppression powder spraying device is as follows: one end of the shell 2 is stably connected with the bottom disc 4 by bolts, which can ensure that the two are tightly combined and are not easy to be loosened due to external vibration or impact; the other end of the shell 2 is also fixed with the butterfly nozzle 21 by bolts, and the diaphragm 8 is tightly packaged between the shell 2 and the butterfly nozzle 21, so that the shell 2 forms a closed space, and the gap between the shell 2 and the inner container 9 is filled with dry powder extinguishing agent, which is always in standby state and is ready to respond to possible danger at any time. The junction box cover 3 and the gas generator 6 are electrically connected, which provides power support and signal transmission channel for the start of the gas generator 6. When a combustion or explosion accident occurs underground, the external sensor controller can quickly capture the flame signal generated by the combustion and explosion. Once the signal is received, the controller will immediately connect the current, which is transmitted to the explosion suppressor in the explosion suppression device. Under the action of the current, the gas generator 6 in the explosion suppressor is activated in a very short time, and a large amount of low-temperature high-pressure gas is quickly generated. The high-pressure gas forms a strong driving force, breaks through the diaphragm 8, and pushes the dry powder extinguishing agent between the shell 2 and the inner container 9, so that it is sprayed out through the butterfly nozzle 21 and accurately acts on the inside of the pipeline 1, so as to quickly extinguish the flame of combustion or explosion and prevent the danger from further expanding. The connection between each part is sealed by rubber pads to ensure the sealing effect of the whole device, and the live parts are powered by the external power supply.

[0037] Referring to Figure 3 , Figure 4 , Figure 5 and Figure 8 , further; the lifting assembly 5 comprises a fixed cylinder 56 fixedly sleeved on the outer wall of the inner container 9, the inner wall of the inner container 9 is detachably connected between the bottom disc 4, the inner container 9 is located on the outside of the gas generator 6, the inside of the fixed cylinder 56 is provided with a gas cylinder 51 and a movable ring 52, and the inner wall of the fixed cylinder 56 is slidably connected with the movable ring 52; the lifting assembly 5 further comprises a moving frame 53 and a connecting rod 57, one end of the connecting rod 57 penetrates through the side wall of the fixed cylinder 56 and is fixedly connected with the movable ring 52, the other end of the connecting rod 57 is fixedly connected with the moving frame 53, the moving frame 53 is located on one side of the inner container 9, the side of the movable ring 52 away from the connecting rod 57 is fixedly connected with the gas cylinder 51, and one end of the gas cylinder 51 is fixedly connected with the inner wall of the fixed cylinder 56; the side of the moving frame 53 away from the gas guide pipe 54 is fixedly connected with a pulling column 58, the outer wall of the pulling column 58 is fixedly connected with a spiral sliding strip 59, and a through hole 581 is formed in the side wall of the pulling column 58 and communicates with the gas guide pipe 54.

[0038] The lifting assembly 5 provides power to the loose assembly 7: the cylinder 51 and the gas generator 6 are linked by electrical signals. This close signal connection ensures a high degree of coordination between the two. When the gas generator 6 is activated by an external trigger, the cylinder 51 will receive the corresponding electrical signal at the same time and be activated synchronously. After activation, the movable end of the cylinder 51 will retract inward. This retraction action directly drives the movable ring 52 to slide smoothly along the wall of the fixed cylinder 56 toward the side where the chassis 4 is located.

[0039] The movement of the movable ring 52 is not carried out in isolation. It is connected to the movable frame 53 through the connecting rod 57. Therefore, during the movement of the movable ring 52, the connecting rod 57 will move synchronously, thereby driving the movable frame 53 and the pulling column 58 connected to the movable frame 53 to move toward the direction of the inner liner 9. It is worth noting that the spiral slide 59 on the outer wall of the pulling column 58 and the spiral slide 731 on the inner wall of the movable groove 732 of the rotating column 73 cooperate with each other to form a precise limited sliding structure. When the pulling column 58 moves, the spiral slide 59 will slide along the trajectory of the spiral slide 731. This sliding method not only ensures the stability and directionality of the movement of the pulling column 58, but more importantly, through this mechanical transmission, the power of the cylinder 51 is effectively transmitted to the subsequent loose component 7, providing the necessary driving force for the operation of the loose component 7, ensuring that the loose component 7 can play its due role in time.

[0040] Furthermore, the lifting assembly 5 also includes an air guide tube 54 and a protective tube 55. One end of the air guide tube 54 is funnel-shaped, and the other end of the air guide tube 54 is cylindrical. One end of the air guide tube 54 passes through the side wall of the inner liner 9 and is fixedly connected to the movable frame 53. The protective tube 55 is sleeved on the outer wall of the inner liner 9. The outer wall of the protective tube 55 is fixedly connected to an ear plate 551, and the ear plate 551 is fixedly connected to the connecting rod 57. The inner wall of the protective tube 55 is fixedly connected to a barbed bristle 552.

[0041] Protection of the inner liner 9 by the protective tube 55: In the initial state, the protective tube 55 is tightly mounted on the outer wall of the inner liner 9, and its position is just enough to completely cover the exhaust hole 91 on the outer wall of the inner liner 9, forming a protective barrier. The core function of this design is to isolate the exhaust hole 91 from the dry powder filled between the outer shell 2 and the inner liner 9 when the device is not started, so as to prevent the dry powder from entering the exhaust hole 91 due to factors such as shaking and vibration of the device during long-term storage or transportation, and to avoid the exhaust hole 91 being blocked by dry powder. Once the exhaust hole 91 is blocked, the gas generated by the subsequent gas generator 6 will not be able to flow smoothly through the exhaust hole 91, which will directly affect the transmission efficiency and pressure of the gas, thereby weakening the spraying effect of the explosion suppression powder, making it difficult to quickly and effectively respond to sudden combustion or explosion hazards;

[0042] When the device is triggered to start, the connecting rod 57 starts to move under the drive of the air cylinder 51. Since the protective cylinder 55 is fixedly connected with the connecting rod 57 through the lug plate 551, the movement of the connecting rod 57 will synchronously drive the protective cylinder 55 to slide smoothly along the outer wall of the inner container 9 to the side of the fixed cylinder 56. In the process of movement of the protective cylinder 55, the barb bristles 552 installed on the inner side of the protective cylinder 55 will be in direct contact with the exhaust holes 91 of the outer wall of the inner container 9. These barb bristles 552 are tough and closely arranged, and when moving with the protective cylinder 55, they can deeply enter the pores of the exhaust holes 91 to completely clean out the dry powder particles and tiny impurities that may be left or stuck in the holes. This cleaning action is not a simple surface cleaning. The barb structure can effectively hook out stubborn residues in the pores, ensuring that each small channel of the exhaust hole 91 remains unobstructed. Through such a design, the exhaust hole 91 can be reliably protected from being blocked when the device is not working, and the cleaning of the exhaust hole 91 can be completed simultaneously at the moment of starting, fundamentally ensuring the smoothness of gas flow and providing stable protection for the rapid and unobstructed passage of the gas generated by the subsequent gas generator 6 through the exhaust hole 91, ensuring the efficient performance of the entire explosion suppression powder injection process.

[0043] Embodiment two

[0044] With reference to Figure 3 , Figure 4 , Figure 6 and Figure 7 , further; the loosening assembly 7 includes a rotating frame 71 and a rotating column 73. The rotating frame 71 is rotationally connected with the inner wall of the shell 2, and the rotating frame 71 is fixedly connected with the outer wall of the rotating column 73. The side wall of the rotating column 73 is provided with a movable groove 732, and the inner wall of the movable groove 732 is provided with a spiral sliding groove 731 matched with the spiral sliding strip 59.

[0045] The synergistic effect of the pulling assembly 5 and the loosening assembly 7: through the precise cooperation between the spiral sliding strip 59 on the outer wall of the pulling column 58 and the spiral sliding groove 731 on the inner wall of the movable groove 732 of the rotating column 73, a stable limiting sliding structure is formed. This structure design enables the linear movement of the pulling column 58 to be smoothly converted into the rotary motion of the rotating column 73. When the pulling column 58 moves under the action of the driving force, the spiral sliding strip 59 will slide along the track of the spiral sliding groove 731, and through the spiral guiding relationship between the two, the rotating column 73 is driven to rotate. At the same time, since the rotating column 73 is connected with the inner wall of the shell 2 through the rotating frame 71, and the rotating frame 71 can flexibly rotate relative to the inner wall of the shell 2, the rotation of the rotating column 73 will synchronously drive the rotating frame 71 to rotate, realizing the effective transmission of power and the conversion of motion form.

[0046] During the movement of the pulling column 58, the entire column moves gradually from the inside of the movable groove 732 of the rotating column 73 to the outside. The inner wall of the movable groove 732 maintains a tight sliding connection with the outer wall of the pulling column 58. This fitting design forms a physical barrier, which can effectively prevent the dry powder between the outer shell 2 and the inner tank 9 from entering the rotating column 73. If the dry powder invades the rotating column 73, it may accumulate between the transmission components, causing jamming or even jamming. This sliding connection structure avoids such problems from the source, ensuring that the pulling column 58 can move smoothly in the movable groove 732 and the rotating column 73 can rotate without interference, thereby ensuring the stable operation of the entire transmission mechanism and providing a reliable power basis for the subsequent loose component 7 to break up the dry powder.

[0047] The cam 76 is pressed against the top of the lever 74 and the push rod 73 is pressed against the top of the lever 74. The cam 76 is pressed against the push rod 74 and the push rod 73 is pressed against the top of the lever 74. The wall is fixedly connected; the outer wall of the rotating column 73 is fixedly connected to the outer sleeve 74, the outer wall of the outer sleeve 74 is fixedly connected to the loose rod 741, and one end of the outer sleeve 74 is connected to the piston chamber 733; the loose component 7 also includes a fixed plate 72, one side of the fixed plate 72 is fixedly connected to one end of the piston rod 75, and the other side of the fixed plate 72 is fixedly connected to the cutting piece 721, and the side wall of the fixed plate 72 is provided with a diffusion hole 722, and the side wall of the fixed plate 72 is fixedly connected to the inner sleeve 77, the inner sleeve 77 is slidably connected to the inner wall of the outer sleeve 74, and one end of the inner sleeve 77 is connected to the diffusion hole 722.

[0048] The loose component 7 further diffuses the dry powder: when the gas generator 6 starts working, part of the gas it generates will enter the through hole 581 of the pulling column 58 through the air guide tube 54. As the pulling column 58 moves, this airflow will directly impact the piston rod 75, forming a continuous thrust. Under the action of the airflow, the piston rod 75 will overcome the elastic force of the telescopic spring 76 and compress toward the side of the telescopic spring 76, while driving the fixed plate 72 connected thereto to move toward the direction of the diaphragm 8. During the movement of the fixed plate 72, the cutting piece 721 at the end thereof will gradually approach the diaphragm 8, and finally accurately puncture the diaphragm 8, opening a channel for the release of the dry powder. At this time, the high-pressure gas generated by the gas generator 6 and the pushed dry powder form a combined force. With the help of the strong driving force of the air pressure, the dry powder can move quickly and smoothly in the injection direction, thereby achieving rapid release.

[0049] At the same time, the rotating column 73 is in a rotating state driven by the pulling column 58, and the outer sleeve 74 on its outer wall rotates therewith, and the fixed plate 72 connected to the piston rod 75 also rotates synchronously. During the rotation of the fixed plate 72 and the outer sleeve 74, they stir and loosen the dry powder stored in the shell 2. For those dry powders that may have deposited or agglomerated due to long storage time or environmental factors, this rotation and stirring can effectively break them up, ensuring that the dry powder remains loose during the spraying process, avoiding uneven spraying caused by agglomeration, thereby significantly improving the spraying effect and allowing the dry powder to evenly cover the target area.

[0050] In addition, during the dry powder spraying process, due to the continuous air pressure, one end of the piston rod 75 will be pushed to the bottom of one end of the outer sleeve 74. In this way, the gas can enter the interior of the inner sleeve 77 through the outer sleeve 74, and then be discharged from the diffusion hole 722 on the fixed plate 72. The airflow discharged from the diffusion hole 722 will form airflow disturbance near the injection port, further promoting the diffusion of the dry powder. In this way, the dry powder can be effectively prevented from accumulating at the injection port, allowing the dry powder to be sprayed out in a more dispersed and uniform state, ensuring that it can contact the flame to the maximum extent and fully exert the explosion suppression effect.

[0051] It should be noted that the specific model specifications of the electrical components need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0052] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A self-produced explosion suppression powder spraying device for mining, comprising a pipe (1) and a shell (2), wherein one end of the shell (2) is provided with a junction box shield (3) and a chassis (4), the interior of the shell (2) is provided with a gas generator (6) and an inner liner (9), an outer wall of the inner liner (9) is provided with an exhaust hole (91), and the other end of the shell (2) is provided with a butterfly nozzle (21), characterized in that: Also includes: A lifting assembly (5), the lifting assembly (5) being located inside the housing (2), the lifting assembly (5) being used to shield the exhaust hole (91), the lifting assembly (5) further comprising a movable frame (53) and a connecting rod (57), the lifting assembly (5) further comprising an air guide tube (54) and a protective tube (55); A loose component (7), the loose component (7) is located inside the housing (2), and the loose component (7) is used to disperse the dry powder inside the housing (2); The lifting assembly (5) includes a fixed cylinder (56), the fixed cylinder (56) is fixedly sleeved on the outer wall of the inner liner (9), the inner wall of the inner liner (9) is detachably connected to the bottom plate (4), the inner liner (9) is located outside the gas generator (6), a cylinder (51) and a movable ring (52) are provided inside the fixed cylinder (56), and the inner wall of the fixed cylinder (56) is slidably connected to the movable ring (52); The loose assembly (7) includes a rotating frame (71) and a rotating column (73), wherein the rotating frame (71) is rotatably connected to the inner wall of the outer shell (2), and the rotating frame (71) is fixedly connected to the outer wall of the rotating column (73), and a movable groove (732) is provided on the side wall of the rotating column (73). A pulling column (58) is fixedly connected to the side of the movable frame (53) away from the air guide tube (54), and a spiral slide bar (59) is fixedly connected to the outer wall of the pulling column (58). A through hole (581) is provided on the side wall of the pulling column (58), and the through hole (581) is connected to the air guide tube (54). The inner wall of the movable groove (732) is provided with a spiral slide bar (731) that matches the spiral slide bar (59).

2. A self-produced explosion suppression powder spraying device for mining according to claim 1, characterized in that: One end of the housing (2) is fixedly connected to the chassis (4), and the other end of the housing (2) is fixedly connected to the pipe (1) and the butterfly nozzle (21), respectively. The butterfly nozzle (21) is located on the inner side of the pipe (1). A diaphragm (8) is provided between the housing (2) and the butterfly nozzle (21). An end of the chassis (4) away from the housing (2) is detachably connected to the junction box shield (3), and a side wall of the chassis (4) is fixedly connected to the gas generator (6).

3. A self-produced explosion suppression powder spraying device for mining according to claim 1, characterized in that: One end of the connecting rod (57) passes through the side wall of the fixed cylinder (56) and is fixedly connected to the movable ring (52), and the other end of the connecting rod (57) is fixedly connected to the movable frame (53). The movable frame (53) is located on one side of the inner liner (9). The side of the movable ring (52) away from the connecting rod (57) is fixedly connected to the cylinder (51), and one end of the cylinder (51) is fixedly connected to the inner wall of the fixed cylinder (56).

4. A self-produced explosion suppression powder spraying device for mining according to claim 3, characterized in that: One end of the air guide tube (54) is funnel-shaped, and the other end of the air guide tube (54) is cylindrical. One end of the air guide tube (54) passes through the side wall of the inner liner (9) and is fixedly connected to the movable frame (53). The protective tube (55) is sleeved on the outer wall of the inner liner (9). The outer wall of the protective tube (55) is fixedly connected to an ear plate (551), and the ear plate (551) is fixedly connected to the connecting rod (57). The inner wall of the protective tube (55) is fixedly connected to a barbed brush bristle (552).

5. A self-produced explosion suppression powder spraying device for mining according to claim 1, characterized in that: The inner wall of the movable groove (732) is slidably connected to the pulling column (58), and a piston cavity (733) is provided inside the rotating column (73). One end of the piston cavity (733) is communicated with the movable groove (732). The inner wall of the piston cavity (733) is provided with a piston rod (75) and a telescopic spring (76). The piston rod (75) is arranged in a "T" shape. One end of the piston rod (75) is slidably connected to the inner wall of the piston cavity (733), and the other end of the piston rod (75) passes through the inner wall of the piston cavity (733). The telescopic spring (76) is sleeved on the outside of the piston rod (75), and the two ends of the telescopic spring (76) are fixedly connected to the inner wall of the piston cavity (733) and the side wall of the piston rod (75) respectively.

6. A self-produced explosion suppression powder spraying device for mining according to claim 5, characterized in that: The outer wall of the rotating column (73) is fixedly connected to an outer sleeve (74), the outer wall of the outer sleeve (74) is fixedly connected to a loose rod (741), and one end of the outer sleeve (74) is connected to the piston chamber (733).

7. A self-produced explosion suppression powder spraying device for mining according to claim 6, characterized in that: The loose assembly (7) further comprises a fixed plate (72), one side of the fixed plate (72) being fixedly connected to one end of the piston rod (75), the other side of the fixed plate (72) being fixedly connected to a cutting piece (721), a side wall of the fixed plate (72) being provided with a diffusion hole (722), the side wall of the fixed plate (72) being fixedly connected to an inner sleeve (77), the inner sleeve (77) being slidably connected to the inner wall of the outer sleeve (74), and one end of the inner sleeve (77) being communicated with the diffusion hole (722).

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