Mining self-produced explosion suppression powder spraying device

Abstract

The invention provides a mining self-produced explosion suppression powder spraying device, which belongs to the technical field of explosion suppression equipment, and comprises a pipeline and a shell, one end of the shell is provided with a junction box shield and a chassis, the shell is internally 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 mining self-produced explosion suppression powder spraying device further comprises a lifting assembly, the lifting assembly is used for shielding the exhaust hole; the loosening assembly is used for scattering the dry powder in the shell; the device has the beneficial effects that through linkage of the lifting assembly and the gas generator, the protective barrel can be triggered to move, the loosening assembly can be triggered to operate, inner container exhaust holes are cleaned through barb bristles, dry powder blockage is avoided, smooth gas circulation is guaranteed, meanwhile, agglomerated dry powder is beaten through rotary stirring, rapid and uniform spraying is achieved in cooperation with gas pressure pushing, and the working efficiency is improved. And through combination of the diffusion holes and the butterfly-shaped nozzles, the dry powder can cover the interior of the pipeline in a more dispersed and uniform state, and the fire extinguishing and explosion suppression effect is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion suppression equipment, in particular to a self-produced explosion suppression powder spraying device for mining. Background Art

[0002] In underground mining environments such as coal mines, the risk of explosion is extremely high due to the presence of a large amount of flammable gas and dust. In order to ensure production safety and the safety of personnel lives, mine pipeline explosion suppressors, as an important safety equipment, are widely used to suppress and prevent the occurrence of explosion accidents. The working principle of the explosion suppressor is usually that when a potential explosion hazard is detected, such as gas concentration exceeding the standard or dust concentration reaching the explosion limit, a signal is sent to the controller through the sensor, and the controller triggers the explosion suppressor to start. After the explosion suppressor is started, the gas generator produces a large amount of high-temperature and high-pressure gas, which breaks through the sealing diaphragm, causing the dry powder explosion suppressant in the cylinder to be rapidly ejected under pressure and cover the surface of the burning or explosive material. Through chemical inhibition and physical isolation, the combustion reaction chain is blocked, the combustion rate is reduced, and the explosion is prevented or the explosion power is reduced.

[0003] In the existing technology, dry powder may accumulate and clump due to its own weight, which leads to low spraying efficiency. In addition, dry powder fire extinguishing agents stored for a long time may easily clump due to moisture. It is difficult for existing devices to loosen the powder in a targeted manner during spraying, so that the agglomerated dry powder blocks the spray channel or causes uneven spraying, and cannot form effective coverage, which weakens the explosion suppression effect. In addition, in traditional devices, the exhaust holes are directly exposed to the dry powder environment. After long-term use, they are easily clogged by dry powder particles or impurities, resulting in the high-pressure gas generated by the gas generator being unable to circulate smoothly, making it difficult to generate sufficient thrust to promote dry powder spraying, and delaying the explosion suppression opportunity. How to invent a self-produced explosion suppression powder spraying device for mining to solve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In order to make up for the above shortcomings, the present invention provides a self-produced explosion suppression powder spraying device for mining, which aims to solve the problem that the existing device is difficult to loosen the powder in a targeted manner during spraying, causing the agglomerated dry powder to block the spray channel or cause uneven spraying, and unable to form effective coverage, thereby weakening the explosion suppression effect, and the exhaust holes are easily clogged by dry powder particles or impurities after long-term use, resulting in the high-pressure gas generated by the gas generator being unable to flow smoothly.

[0005] The present invention is achieved in that: The present invention provides a self-produced explosion suppression powder spraying device for mining, comprising a pipeline and a housing, one end of the housing being provided with a junction box shield and a chassis, the interior of the housing being provided with a gas generator and an inner liner, the outer wall of the inner liner being provided with an exhaust hole, the other end of the housing being provided with a butterfly nozzle, and further comprising: A lifting assembly, the lifting assembly being located inside the housing and being used to cover the exhaust hole; A loose component is located inside the shell and is used to break up the dry powder inside the shell.

[0006] Preferably, one end of the shell is fixedly connected to the chassis, and the other end of the shell is fixedly connected to the pipe and the butterfly nozzle respectively, the butterfly nozzle is located on the inner side of the pipe, and a diaphragm is provided between the shell and the butterfly nozzle, the end of the chassis away from the shell is detachably connected to the junction box shield, and the side wall of the chassis is fixedly connected to the gas generator.

[0007] Preferably, the pulling assembly includes a fixed cylinder, which is fixedly sleeved on the outer wall of the inner liner, and the inner wall of the inner liner is detachably connected to the chassis. The inner liner is located on the outside of the gas generator, and a cylinder and a movable ring are provided inside the fixed cylinder, and the inner wall of the fixed cylinder is slidably connected to the movable ring.

[0008] Preferably, the lifting assembly also includes a movable frame and a connecting rod, one end of the connecting rod passes through the side wall of the fixed cylinder and is fixedly connected to the movable ring, the other end of the connecting rod is fixedly connected to the movable frame, the movable frame is located on one side of the inner liner, the side of the movable ring away from the connecting rod is fixedly connected to the cylinder, and one end of the cylinder is fixedly connected to the inner wall of the fixed cylinder.

[0009] Preferably, the lifting assembly also includes an air guide tube and a protective tube, one end of the air guide tube is funnel-shaped, and the other end of the air guide tube is cylindrical, one end of the air guide tube passes through the side wall of the inner liner and is fixedly connected to the movable frame, the protective tube is sleeved on the outer wall of the inner liner, the outer wall of the protective tube is fixedly connected with an ear plate, the ear plate is fixedly connected to the connecting rod, and the inner wall of the protective tube is fixedly connected with barbed bristles.

[0010] Preferably, a pulling column is fixedly connected to a side of the movable frame away from the air duct, a spiral slide is fixedly connected to the outer wall of the pulling column, a through hole is opened on the side wall of the pulling column, and the through hole is connected to the air duct.

[0011] Preferably, the loose component includes a rotating frame and a rotating column, the rotating frame is rotatably connected to the inner wall of the outer shell, the rotating frame is fixedly connected to the outer wall of the rotating column, the side wall of the rotating column is provided with a movable groove, and the inner wall of the movable groove is provided with a spiral slide groove that cooperates with the spiral slide bar.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] The beneficial effects of the present invention are: 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

[0016] 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.

[0017] Figure 1This is a schematic diagram of the overall structure of a self-produced explosion suppression powder spraying device for mining provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the nozzle structure of a self-produced explosion suppression powder spraying device for mining provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of a half-section structure of the outer cylinder of a self-produced explosion suppression powder spraying device for mining provided by an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the outer cylinder of a self-produced explosion suppression powder spraying device for mining provided by an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a mobile frame of a self-produced explosion suppression powder spraying device for mining provided by an embodiment of the present invention; Figure 6 This is a schematic diagram of the rotating column structure of a self-produced explosion suppression powder spraying device for mining provided by an embodiment of the present invention; Figure 7 This is a schematic diagram of the loose component structure of a self-produced explosion suppression powder spraying device for mining provided by an embodiment of the present invention; Figure 8 The present invention provides a schematic diagram of the protective tube structure of a self-produced explosion suppression powder spraying device for mining.

[0018] In the figure: 1. pipeline; 2. shell; 21. butterfly nozzle; 3. junction box shield; 4. chassis; 5. lifting assembly; 51. cylinder; 52. movable ring; 53. movable frame; 54. air guide tube; 55. protective tube; 551. ear plate; 552. barb bristles; 56. fixed tube; 57. connecting rod; 58. pulling column; 581. through hole; 59. spiral slide; 6. gas generator; 7. loose assembly; 71. rotating frame; 72. fixed plate; 721. cutting disc; 722. diffusion hole; 73. rotating column; 731. spiral slide; 732. movable groove; 733. piston chamber; 74. outer sleeve; 741. loose rod; 75. piston rod; 76. telescopic spring; 77. inner sleeve; 8. diaphragm; 9. liner; 91. exhaust hole. DETAILED DESCRIPTION

[0019] 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.

[0020] Example 1 Reference Figures 1-8A 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: The lifting component 5 is located inside the housing 2 and is used to cover the exhaust hole 91; The loose component 7 is located inside the shell 2 and is used to break up the dry powder inside the shell 2 .

[0021] 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.

[0022] The working process of the explosion suppression powder spraying device: one end of the shell 2 is firmly connected to the chassis 4 by bolts. This connection method can ensure that the two are tightly combined and are not easily loosened due to external vibration or impact; the other end of the shell 2 is also fixed to the butterfly nozzle 21 by bolts, and between the shell 2 and the butterfly nozzle 21, the diaphragm 8 is tightly sealed therein, so that the shell 2 forms a closed space. The gap between the shell 2 and the inner tank 9 is filled with dry powder fire extinguishing agent. These dry powders are always on standby and ready to respond to possible dangerous situations. An electrical connection is established between the junction box shield 3 and the gas generator 6. This connection provides power support and signal transmission channel for the start-up of the gas generator 6. When a combustion or explosion accident occurs underground When the flame signal of the combustion or explosion occurs, the external sensor controller will quickly capture the flame signal generated by the combustion and explosion. Once the signal is received, the controller will immediately turn on the current, and the current will be 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. These high-pressure gases form a powerful driving force, breaking through the diaphragm 8, pushing the dry powder fire extinguishing agent between the outer shell 2 and the inner tank 9, so that it is sprayed out through the butterfly nozzle 21 and acts accurately on the inside of the pipeline 1, thereby quickly extinguishing the flame of the combustion or explosion and preventing the danger from further expanding. The joints between the various components are sealed with rubber pads to ensure the sealing effect of the entire equipment, and the live components are powered by an external power supply.

[0023] Reference Figure 3 、 Figure 4 、 Figure 5 and Figure 8, further; the pulling 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 chassis 4, the inner liner 9 is located on the outside of the gas generator 6, and the interior of the fixed cylinder 56 is provided with a cylinder 51 and a movable ring 52, and the inner wall of the fixed cylinder 56 is slidably connected to the movable ring 52; the pulling assembly 5 also includes a movable frame 53 and a connecting rod 57, 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, The other end of the connecting rod 57 is fixedly connected to the movable frame 53, and 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 tube 56; the side of the movable frame 53 away from the air guide tube 54 is fixedly connected to the pulling column 58, and the outer wall of the pulling column 58 is fixedly connected to the spiral slide 59, and the side wall of the pulling column 58 is provided with a through hole 581, which is connected to the air guide tube 54.

[0024] 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. 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.

[0025] 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.

[0026] 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; When the device is triggered and started, the connecting rod 57 starts to move under the drive of the cylinder 51. Since the protective tube 55 is fixedly connected to the connecting rod 57 through the ear plate 551, the movement of the connecting rod 57 will synchronously drive the protective tube 55 to slide smoothly along the outer wall of the inner liner 9 toward the side of the fixed tube 56. During the movement of the protective tube 55, the barbed bristles 552 installed on the inner side thereof will come into direct contact with the exhaust hole 91 on the outer wall of the inner liner 9. These barbed bristles 552 are tough and closely arranged. When moving with the protective tube 55, they can penetrate into the pores of the exhaust hole 91 and remove any residue or stuck in the hole. The dry powder particles, tiny impurities, etc. are thoroughly cleaned out. This cleaning action is not a simple surface cleaning. The barb structure can effectively hook out the stubborn residues in the pores, ensuring that each tiny 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 exhaust hole 91 can be cleaned synchronously at the moment of startup, fundamentally ensuring the smoothness of gas circulation, and providing stable protection for the gas generated by the subsequent gas generator 6 to pass through the exhaust hole 91 quickly and unimpeded, ensuring the efficient progress of the entire explosion suppression powder spraying process.

[0027] Example 2 Reference Figure 3 、 Figure 4 、 Figure 6 and Figure 7 , further; the loose component 7 includes a rotating frame 71 and a rotating column 73, the rotating frame 71 is rotatably connected to the inner wall of the outer shell 2, the rotating frame 71 is fixedly connected to the outer wall of the rotating column 73, the side wall of the rotating column 73 is provided with a movable groove 732, the inner wall of the movable groove 732 is provided with a spiral slide 731 that cooperates with the spiral slide 59.

[0028] The synergistic effect of the pulling component 5 and the loose component 7: through the precise cooperation between the spiral slide 59 on the outer wall of the pulling column 58 and the spiral slide groove 731 on the inner wall of the movable groove 732 of the rotating column 73, a stable limited sliding structure is formed. This structural design enables the linear movement of the pulling column 58 to be smoothly converted into the rotational movement of the rotating column 73. When the pulling column 58 moves under the action of the driving force, the spiral slide 59 will slide along the trajectory of the spiral slide groove 731, and with the help of the spiral guiding relationship between the two, the rotating column 73 is driven to rotate accordingly. At the same time, since the rotating column 73 is connected to the inner wall of the shell 2 through the rotating frame 71, and the rotating frame 71 can be flexibly rotated 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 together, thereby realizing effective power transmission and conversion of motion form; 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.

[0029] 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.

[0030] 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. 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. 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.

[0031] 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.

[0032] 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 component (5), the lifting component (5) is located inside the housing (2), and the lifting component (5) is used to cover the exhaust hole (91); A loose component (7), the loose component (7) is located inside the shell (2), and the loose component (7) is used to disperse the dry powder inside the shell (2).

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: The lifting assembly (5) includes a fixed cylinder (56), which is fixedly sleeved on the outer wall of the inner liner (9), and the inner wall of the inner liner (9) is detachably connected to the chassis (4). The inner liner (9) is located outside the gas generator (6). The interior of the fixed cylinder (56) is provided with a cylinder (51) and a movable ring (52), and the inner wall of the fixed cylinder (56) is slidably connected to the movable ring (52).

4. A self-produced explosion suppression powder spraying device for mining according to claim 1, characterized in that: The lifting assembly (5) further includes a movable frame (53) and a connecting rod (57), 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).

5. A self-produced explosion suppression powder spraying device for mining according to claim 4, characterized in that: The lifting assembly (5) further 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 brush bristle (552).

6. A self-produced explosion suppression powder spraying device for mining according to claim 5, characterized in that: A pulling column (58) is fixedly connected to one side of the movable frame (53) away from the air guide tube (54); 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).

7. A self-produced explosion suppression powder spraying device for mining according to claim 1, characterized in that: 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), and a spiral slide groove (731) that cooperates with the spiral slide bar (59) is provided on the inner wall of the movable groove (732).

8. A self-produced explosion suppression powder spraying device for mining according to claim 7, 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.

9. A self-produced explosion suppression powder spraying device for mining according to claim 8, 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).

10. A self-produced explosion suppression powder spraying device for mining according to claim 9, 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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