Coal mine fire-fighting underground smoke exhaust device

Abstract

The utility model discloses a coal mine fire-fighting underground smoke exhaust device, which relates to the technical field of underground exhaust and comprises a ventilation box placed on the ground, a ventilation pipe penetrating through the ventilation box is arranged in the ventilation box, and two ends of the ventilation box are fixedly connected with a first mounting ring and a second mounting ring respectively. And the inner side of the first mounting ring is clamped and connected with an extension structure. According to the coal mine fire-fighting underground smoke exhaust device, air can be filtered by mechanical energy of a plurality of filtering assemblies, so that the cleaned air is discharged out of the ventilation pipe from a connecting ring, and due to the fact that the filtering assemblies are of detachable structures, when needing to be cleaned, the filtering assemblies can be detached from the interior of the mounting groove and the interior of the ventilation pipe; and the air inlet corrugated pipe is extended by moving the moving ring, so that the air inlet corrugated pipe and the moving ring can move into a relatively narrow space, air exhaust operation is carried out on a place where the ventilation box cannot enter, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground gas extraction, in particular to a smoke and dust extraction device for underground coal mine fire fighting. Background Technique

[0002] The underground coal mine fire fighting gas extraction device needs to treat harmful gases such as smoke and dust and gas generated during underground operation.

[0003] During the existing coal mine collection process, a large amount of dust is generated during coal mining and mixed with the air inside the coal mine, which is prone to dust explosion and cause accidents.

[0004] In order to overcome the above defects, a Chinese patent of the prior art (publication number: CN209838467U) discloses a dust reduction device for air extraction in coal mine roadways, which injects the extracted air into a rotating ventilation drum, makes the air disperse through through-holes and enter the water tank, and then filters the air through the cooperation of the liquid and filter screen in the water tank to remove harmful gases. The water consumption and power consumption are small, and at the same time, the dust and harmful gases in the underground air can be filtered and removed.

[0005] The above prior art realizes the dust reduction treatment of harmful gases by introducing air into water. In the actual use process, due to the limited internal space of the coal mine, the traditional gas extraction equipment is not convenient for gas extraction operations in relatively narrow places inside the coal mine due to its volume. Content of the Utility Model

[0006] The purpose of the utility model is to provide a smoke and dust extraction device for underground coal mine fire fighting, so as to solve the problem that in the above background technique, due to the limited internal space of the coal mine, the traditional gas extraction equipment is not convenient for gas extraction operations in relatively narrow places inside the coal mine due to its volume.

[0007] To achieve the above purpose, the utility model provides the following technical solution: a smoke and dust extraction device for underground coal mine fire fighting, including a ventilation box placed on the ground, a ventilation pipe running through the inside of the ventilation box is arranged inside the ventilation box, and both ends of the ventilation box are respectively fixedly connected with a first mounting ring and a second mounting ring, and an extension structure is snap-fitted inside the first mounting ring;

[0008] The extension structure includes a connection ring snap-fitted inside the first mounting ring, one side of the connection ring away from the first mounting ring is fixedly connected with an exhaust bellows, the exhaust bellows are evenly distributed, and a fixing ring is fixedly connected between every two exhaust bellows;

[0009] A positioning structure for fixing it is arranged inside the fixing ring.

[0010] Preferably, the top of the ventilation box is provided with mounting grooves distributed at equal intervals, and a filtering component is snap-fitted inside each mounting groove. The filtering component is composed of a mounting plate and a filter screen. The mounting plate is snap-fitted inside the ventilation box and the ventilation pipe, and the filter screen is located inside the ventilation pipe.

[0011] Preferably, a moving ring is snap-fitted inside the second mounting ring, and an intake bellows is fixedly connected between the moving ring and the ventilation pipe. An intercepting net is fixedly connected inside the moving ring, and two fans are fixedly connected inside the ventilation pipe, and the two fans are located between every two filtering components.

[0012] Preferably, the top of the fixed ring is provided with an opening, and positioning chutes are provided at both ends of the fixed ring. Annularly and equally distributed positioning strips are fixedly connected inside the positioning chutes, and the positioning structure is fixedly connected inside the opening at the top of the fixed ring.

[0013] Preferably, the positioning structure includes a mounting sleeve fixedly connected inside the opening at the top of the fixed ring. A driving rod is rotatably connected inside the mounting sleeve. The upper end of the driving rod extends to the top of the fixed ring, and a handle is fixedly connected to the upper end of the driving rod.

[0014] Preferably, lead screws are rotatably connected to both ends inside the mounting sleeve, a sliding strip is threadedly connected to the outer side of the lead screw, and the sliding strip is slidably connected inside the positioning chute.

[0015] Preferably, bevel gears are fixedly connected to the lower end of the driving rod and the end of the lead screw located inside the mounting sleeve. The bevel gear at the end of the driving rod meshes with the bevel gear at the end of the lead screw. Annularly and equally distributed positioning grooves are provided on the outer side of the sliding strip, and the positioning strip inside the positioning chute is slidably connected inside the positioning groove. The end of the sliding strip extends to the outside of the fixed ring, and a conical block is fixedly connected to the end of the sliding strip.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] For this coal mine underground smoke and dust extraction device, air will be filtered by multiple filtering components mechanically, and then the cleaned air will be discharged from the connecting ring into the ventilation pipe. Since the filtering component is a detachable structure, when the filtering component needs to be cleaned, it can be removed from the mounting groove and the ventilation pipe, which is convenient for cleaning or replacement;

[0018] Furthermore, by moving the moving ring to extend the intake bellows, the intake bellows and the moving ring can move into a relatively narrow space, so as to perform air extraction operations in places where the ventilation box cannot enter, improving the practicability of the device;

[0019] Furthermore, the ventilation pipe is extended by multiple exhaust bellows until the exhaust bellows are extended outside the mine, so that the inside of the ventilation pipe is interconnected with the outside of the mine. When the fan inside the ventilation pipe is started, the air inside the mine is then pumped out through the moving ring, the ventilation pipe and the inside of the exhaust bellows, thereby realizing the air extraction operation inside the mine. Brief Description of the Drawings

[0020] Figure 1 Schematic three-dimensional structure diagram of the present utility model;

[0021] Figure 2 Exploded structure diagram of the present utility model;

[0022] Figure 3 Schematic cross-sectional structure diagram of the ventilation box of the present utility model;

[0023] Figure 4 Schematic cross-sectional structure diagram of the exhaust bellows of the present utility model;

[0024] Figure 5 Schematic cross-sectional structure diagram of the fixing ring of the present utility model;

[0025] Figure 6 Schematic cross-sectional structure diagram of the mounting sleeve of the present utility model.

[0026] In the figure: 1, ventilation box; 2, ventilation pipe; 3, first mounting ring; 4, second mounting ring; 5, mounting groove; 6, filtering component; 7, intake bellows; 8, moving ring; 9, intercepting net; 10, connecting ring; 11, exhaust bellows; 12, fixing ring; 13, positioning sliding groove; 14, mounting sleeve; 15, driving rod; 16, lead screw; 17, sliding strip. Detailed Description of the Embodiments

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1:

[0029] Please refer to Figure 1 - Figure 6 , the present utility model provides the following technical solutions:

[0030] A coal mine fire fighting underground smoke and dust extraction device, including a ventilation box 1 placed on the ground. Inside the ventilation box 1, there is a ventilation pipe 2 running through its interior. At both ends of the ventilation box 1, a first mounting ring 3 and a second mounting ring 4 are respectively fixedly connected. And an extension structure is snap-fitted inside the first mounting ring 3;

[0031] The extension structure includes a connecting ring 10 snap-fitted inside the first mounting ring 3. On the side of the connecting ring 10 away from the first mounting ring 3, an exhaust bellows 11 is fixedly connected. The exhaust bellows 11 are evenly distributed, and a fixing ring 12 is fixedly connected between every two exhaust bellows 11;

[0032] Inside the fixing ring 12, there is a positioning structure for fixing it.

[0033] On the top of the ventilation box 1, there are evenly distributed mounting grooves 5. Inside each mounting groove 5, a filtering component 6 is snap-fitted. The filtering component 6 is composed of a mounting plate and a filter screen. The mounting plate is snap-fitted inside the ventilation box 1 and inside the ventilation pipe 2, and the filter screen is located inside the ventilation pipe 2.

[0034] Inside the second mounting ring 4, a moving ring 8 is snap-fitted. Between the moving ring 8 and the ventilation pipe 2, an intake bellows 7 is fixedly connected. Inside the moving ring 8, an intercepting net 9 is fixedly connected. Inside the ventilation pipe 2, two fans are fixedly connected, and the two fans are located between every two filtering components 6.

[0035] On the top of the fixing ring 12, there are openings. At both ends of the fixing ring 12, there are positioning chutes 13. Inside the positioning chutes 13, annularly evenly distributed positioning bars are fixedly connected. And the positioning structure is fixedly connected inside the opening at the top of the fixing ring 12.

[0036] The positioning structure includes a mounting sleeve 14 fixedly connected inside the opening at the top of the fixing ring 12. Inside the mounting sleeve 14, a driving rod 15 is rotatably connected. The upper end of the driving rod 15 extends to the top of the fixing ring 12, and a handle is fixedly connected to the upper end of the driving rod 15.

[0037] At both ends inside the mounting sleeve 14, lead screws 16 are rotatably connected. On the outer side of the lead screws 16, slide bars 17 are threadedly connected. And the slide bars 17 are slidably connected inside the positioning chutes 13.

[0038] At the lower end of the driving rod 15 and at one end of the lead screw 16 located inside the mounting sleeve 14, bevel gears are fixedly connected. The bevel gear at the end of the driving rod 15 and the bevel gear at the end of the lead screw 16 are meshed with each other. On the outer side of the slide bars 17, annularly evenly distributed positioning grooves are provided. Inside the positioning grooves, the positioning bars inside the positioning chutes 13 are slidably connected. The end of the slide bar 17 extends to the outside of the fixing ring 12, and a conical structure clamping block is fixedly connected to the end of the slide bar 17.

[0039] Embodiment Two:

[0040] Based on the first embodiment, its specific working principle is as follows:

[0041] For this coal mine underground smoke and dust extraction device, first place the ventilation box 1 inside the coal mine. At this time, start the fan inside the ventilation pipe 2. When the fan inside the ventilation pipe 2 is running, the air inside the ventilation pipe 2 is drawn into the inside of the moving ring 8, causing the air to circulate inside the ventilation pipe 2. During the process of the air circulating inside the ventilation pipe 2, the air will be filtered by the mechanical energy of multiple filter components 6, and then the cleaned air will be discharged from the connecting ring 10 to the outside of the ventilation pipe 2. Since the filter component 6 is a detachable structure, when the filter component 6 needs to be cleaned, it can be removed from the installation groove 5 and the inside of the ventilation pipe 2, which is convenient for cleaning or replacement;

[0042] The moving ring 8 and the second mounting ring 4 are of a detachable structure, and the intake bellows 7 has good ductility. By taking out the moving ring 8 from the inside of the second mounting ring 4, the intake bellows 7 can be extended by moving the moving ring 8, so that the intake bellows 7 and the moving ring 8 can move into a relatively narrow space, and then the air extraction operation can be carried out in places where the ventilation box 1 cannot enter, improving the practicability of the device;

[0043] When the exhaust bellows 11 is installed inside the first mounting ring 3, at this time, the ventilation pipe 2 is extended through multiple exhaust bellows 11 until the exhaust bellows 11 is extended outside the mine, so that the inside of the ventilation pipe 2 is interconnected with the outside of the mine. When the fan inside the ventilation pipe 2 is started, the air inside the mine is then extracted through the moving ring 8, the ventilation pipe 2 and the inside of the exhaust bellows 11, thus realizing the air extraction operation inside the mine;

[0044] During the extension process of the exhaust bellows 11, it needs to be fixed inside the mine. At this time, rotate the driving rod 15 inside the mounting sleeve 14, so that the driving rod 15 drives two lead screws 16 to rotate inside the mounting sleeve 14 through bevel gears. Then, the lead screws 16 drive the outer sides of the slide bars 17 to move outward, so that the slide bars 17 slide inside the positioning chute 13. By driving the two slide bars 17 away from each other through the two lead screws 16 until the clamping blocks at the ends of the slide bars 17 are clamped and connected to the geological structure inside the mine, the exhaust bellows 11 can be quickly fixed, which is convenient for the layout of the exhaust bellows 11.

[0045] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A downhole smoke and dust extraction device for coal mine fire protection, comprising a ventilation box (1) placed on the ground. A ventilation pipe (2) runs through the interior of the ventilation box (1). Both ends of the ventilation box (1) are fixedly connected with a first mounting ring (3) and a second mounting ring (4) respectively. And an extension structure is snap - connected to the inner side of the first mounting ring (3). It is characterized in that: The extension structure includes a connecting ring (10) snap - connected to the inside of the first mounting ring (3). A side of the connecting ring (10) away from the first mounting ring (3) is fixedly connected with exhaust bellows (11). The exhaust bellows (11) are evenly distributed. And a fixing ring (12) is fixedly connected between every two exhaust bellows (11). A positioning structure for fixing it is arranged inside the fixing ring (12).

2. The underground smoke extraction device for coal mine fire fighting according to claim 1, wherein: The top of the ventilation box (1) is provided with evenly - distributed mounting grooves (5). And a filtering component (6) is snap - connected to the inside of each mounting groove (5). The filtering component (6) is composed of a mounting plate and a filter screen. The mounting plate is snap - connected to the inside of the ventilation box (1) and the inside of the ventilation pipe (2). And the filter screen is located inside the ventilation pipe (2).

3. The underground smoke extraction device for coal mine fire fighting according to claim 2, characterized in that: A moving ring (8) is snap - connected to the inside of the second mounting ring (4). An air inlet bellows (7) is fixedly connected between the moving ring (8) and the ventilation pipe (2). An intercepting net (9) is fixedly connected inside the moving ring (8). And two fans are fixedly connected inside the ventilation pipe (2). And the two fans are located between every two filtering components (6).

4. A mine fire underground smoke extraction device according to claim 1, characterized in that: The top of the fixing ring (12) is provided with an opening. Both ends of the fixing ring (12) are provided with positioning chutes (13). Annularly - evenly - distributed positioning bars are fixedly connected inside the positioning chutes (13). And the positioning structure is fixedly connected inside the opening at the top of the fixing ring (12).

5. The underground smoke extraction device for coal mine fire fighting according to claim 4, characterized in that: The positioning structure includes a mounting sleeve (14) fixedly connected inside the opening at the top of the fixing ring (12). A driving rod (15) is rotatably connected inside the mounting sleeve (14). The upper end of the driving rod (15) extends to the top of the fixing ring (12). And a handle is fixedly connected to the upper end of the driving rod (15).

6. The underground smoke extraction device for coal mine fire fighting according to claim 5, characterized in that: Both ends inside the mounting sleeve (14) are rotatably connected with lead screws (16). A slide bar (17) is threadedly connected to the outside of the lead screw (16). And the slide bar (17) is slidably connected inside the positioning chute (13).

7. The underground smoke extraction device for coal mine fire fighting according to claim 6, characterized in that: Conical teeth are fixedly connected to the lower end of the driving rod (15) and the end of the lead screw (16) located inside the mounting sleeve (14). The conical teeth at the end of the driving rod (15) and the conical teeth at the end of the lead screw (16) are meshed with each other. Annularly - evenly - distributed positioning grooves are arranged on the outside of the slide bar (17). And the positioning bars inside the positioning chute (13) are slidably connected to the inside of the positioning grooves. The end of the slide bar (17) extends to the outside of the fixing ring (12). And a conical - structured clamping block is fixedly connected to the end of the slide bar (17).

Images