A plugging device for coal mine fire prevention

Abstract

The utility model provides a kind of plugging device for coal mine fire prevention, including filling air bag bag, the outer surface of filling air bag bag is equipped with hose, the end of hose away from filling air bag bag is equipped with inflator, the side of filling air bag bag is equipped with wind screen, the side surface of wind screen is equipped with strip-shaped mouth, the outer surface of filling air bag bag is equipped with first magic tape hook face belt, first magic tape hook face belt penetrates strip-shaped mouth, the end of first magic tape hook face belt away from filling air bag bag is adhered with magic tape nap surface belt, magic tape nap surface belt is connected with wind screen, the edge of the side of wind screen away from filling air bag bag is equipped with magic tape nap surface ring, the second magic tape hook face belt for limiting the relative position of adjacent two wind screens is adhered on magic tape nap surface ring, the utility model has the beneficial effects as follows: abandon the way of filling air bag bag gap is plugged by using plastic woven bag to pack small amount of coal cinder, improve reliability.

Description

Technical Field

[0001] This utility model is a fire-prevention sealing device for coal mines, belonging to the field of coal mining. Background Technology

[0002] In coal mining operations, to address the gas control needs in the hydraulic support area of ​​the return airway, multiple inflatable bags are used for active filling protection. These bags are made of high-strength, flexible material; after being injected with air, they can expand to several times their initial size, tightly fitting the roof, floor, and coal wall to form a sealed barrier. Because the inflatable bags are lightweight, a single person can handle their transport and installation, reducing labor intensity compared to traditional gangue filling methods. During mining, multiple inflatable bags are stacked to form a barrier to prevent gas leakage. Since the thickness at the ends of the inflated bags is less than that in the middle, small gaps exist between the ends of adjacent bags, requiring small amounts of coal slag in plastic woven bags to seal them. However, this method has two drawbacks: firstly, dozens of plastic woven bags are needed for a single barrier area, resulting in high material costs and white pollution; secondly, due to mine pressure, the bags are prone to detachment when the bags shift, leading to a risk of gas leakage and poor reliability. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sealing device for fire prevention in coal mines, so as to solve the problems mentioned in the background technology. This utility model abandons the method of filling a small amount of coal slag into a plastic woven bag to seal the gap of the airbag, thus improving reliability.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fire-prevention sealing device for coal mines, comprising an air-filled bag, a flexible tube installed on the outer surface of the air-filled bag, an inflation nozzle installed at the end of the flexible tube away from the air-filled bag, a windbreak curtain on one side of the air-filled bag, a strip opening on one side of the windbreak curtain, a first hook-and-loop fastener strip installed on the outer surface of the air-filled bag, the first hook-and-loop fastener strip passing through the strip opening, a hook-and-loop fastener strip attached to the end of the first hook-and-loop fastener strip away from the air-filled bag, the hook-and-loop fastener strip connected to the windbreak curtain, a hook-and-loop fastener ring installed at the edge of the windbreak curtain facing away from the air-filled bag, and a second hook-and-loop fastener strip attached to the hook-and-loop fastener ring for limiting the relative position of two adjacent windbreak curtains.

[0005] Furthermore, multiple fabric strips are installed on the hook and loop fastener tape, and the fabric strips and the hook and loop fastener tape are integrally formed, and the fabric strips are connected and fixed to the windproof curtain.

[0006] Furthermore, the second hook and loop fastener has multiple fabric loops evenly sewn on the side facing away from the hook and loop loop, and one side of each fabric loop has a threading hole for inserting a cord.

[0007] Furthermore, one side of the windshield curtain has an opening through which the flexible hose passes.

[0008] Furthermore, an inner ring is inserted into the opening, and a first protective ring is installed at one end of the inner ring. The first protective ring is glued to the windshield curtain. A second protective ring is installed at the end of the inner ring away from the first protective ring. The second protective ring is glued to the windshield curtain. The first and second protective rings are located on both sides of the opening, and the outer diameter of the hose is slightly smaller than the inner diameter of the inner ring.

[0009] Furthermore, the windbreak curtain has a rectangular structure, and the cross-section of the Velcro loop is rectangular.

[0010] Furthermore, a rubber sheet is fitted onto the end of the hose away from the inflation nozzle, and the rubber sheet is adhered to the inflation bag by adhesive.

[0011] Furthermore, a piece of fabric is sewn onto one end of the first Velcro hook-and-loop fastener near the inflatable bag, and the fabric is glued to the inflatable bag.

[0012] The beneficial effects of this utility model are:

[0013] 1. The airbag is secured to the hook-and-loop fastener by passing through the first hook-and-loop fastener hook-and-loop fastener through the slot on the windshield, forming a tight connection. Adjacent windshields are secured to the second hook-and-loop fastener hook-and-loop fastener via the edge loops, eliminating gaps at the ends of the airbag. This eliminates the need for plastic woven bags, reducing material costs and avoiding white pollution. It also avoids the method of sealing gaps in the airbag by filling plastic woven bags with a small amount of coal ash, thus improving reliability.

[0014] 2. The one-piece molded fabric strip on the Velcro face belt is sewn and fixed to the windbreak curtain to enhance the tensile strength of the connection; the fabric ring on the second Velcro hook face belt can be inserted with ropes to tie and fix the adjacent windbreak curtains to the roadway support structure, and suppress the overall slippage of the filling airbag due to mine pressure. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a fire-blocking device for coal mines according to the present invention;

[0017] Figure 2This is a schematic diagram of the assembly of the hose, inflation nozzle, first Velcro hook and loop fastener and filling airbag in a fireproof sealing device for coal mines according to this utility model.

[0018] Figure 3 This is a schematic diagram of the assembly of the Velcro strip, Velcro ring and windbreak curtain in a fireproof sealing device for coal mines according to this utility model.

[0019] Figure 4 This is a perspective view of the windbreak curtain in a fire-prevention sealing device for coal mines according to this utility model;

[0020] Figure 5 This is a schematic diagram of the assembly of the first retaining ring, the second retaining ring, and the inner ring in a fire-prevention sealing device for coal mines according to this utility model.

[0021] In the diagram: 1-Inflatable bag, 2-Windproof curtain, 3-Second Velcro hook-and-loop side, 4-Fabric ring, 5-Fabric strip, 6-First Velcro hook-and-loop side, 7-Velcro loop side, 8-Inflator nozzle, 9-Hose, 10-First protective ring, 11-Velcro loop side, 12-Strip opening, 13-Inner ring, 14-Through opening, 15-Second protective ring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a fire-stopping device for coal mines, comprising an air-filled bag 1, a flexible tube 9 installed on the outer surface of the air-filled bag 1, wherein a rubber sheet is fitted onto the end of the flexible tube 9 away from the inflation nozzle 8 and fixed thereto, so that the rubber sheet is glued to the air-filled bag 1, thereby improving the stability of the connection between the flexible tube 9 and the air-filled bag 1; an inflation nozzle 8 is installed at the end of the flexible tube 9 away from the air-filled bag 1; and a first Velcro fastener is installed on the outer surface of the air-filled bag 1. The hook-and-loop fastener 6 has a piece of cloth sewn onto one end of the first hook-and-loop fastener 6 near the filling airbag 1. The cloth is then glued to the filling airbag 1, which improves the stability of the connection between the first hook-and-loop fastener 6 and the filling airbag 1. This allows the air inlet 8 to be connected to the compressed air pipe in the roadway. After the air inlet 8 is opened, it is easy to inject air into the filling airbag 1, which increases the volume of the filling airbag 1. Multiple filling airbags 1 are stacked together to form a filling barrier to prevent gas from overflowing from the goaf.

[0024] See Figures 1-4A windproof curtain 2 is provided on one side of the inflatable airbag 1. The windproof curtain 2 has a rectangular structure and a strip opening 12 on one side. The first hook-and-loop fastener 6 passes through the strip opening 12. A hook-and-loop fastener 7 is attached to the end of the first hook-and-loop fastener 6 away from the inflatable airbag 1. The hook-and-loop fastener 7 is connected to the windproof curtain 2. A hook-and-loop fastener ring 11 is installed on the edge of the windproof curtain 2 away from the inflatable airbag 1. The cross-section of the hook-and-loop fastener ring 11 is rectangular. A second hook-and-loop fastener 3 is attached to the hook-and-loop fastener ring 11 to limit the relative position of two adjacent windproof curtains 2. The inflatable airbag 1 is connected to the hook-and-loop fastener 7 by the first hook-and-loop fastener 6 passing through the strip opening 12 of the windproof curtain 2. Adjacent windproof curtains 2 are connected to the second hook-and-loop fastener 3 through the hook-and-loop fastener ring 11 at their edges, thereby eliminating the gap at the end of the inflatable airbag 1. This method eliminates the need for plastic woven bags as fillers, reducing material costs and avoiding white pollution. It also eliminates the traditional method of using plastic woven bags to seal gaps with coal ash, effectively improving reliability.

[0025] See Figure 1 Multiple fabric strips 5 are installed on the hook and loop fastener surface 7. The fabric strips 5 and the hook and loop fastener surface 7 are integrally formed. The fabric strips 5 are connected and fixed to the windbreak curtain 2. Multiple fabric loops 4 are evenly sewn on the side of the second hook and loop fastener surface 3 opposite to the hook and loop fastener surface 11. One side of the fabric loop 4 has a rope hole for inserting ropes. The integrally formed fabric strips 5 on the hook and loop fastener surface 7 are sewn and fixed to the windbreak curtain 2 to enhance the tensile strength of the connection. The fabric loops 4 on the second hook and loop fastener surface 3 can be used to insert ropes to tie and fix adjacent windbreak curtains 2 to the roadway support structure (such as anchor bolts and steel strips) to suppress the overall slippage of the filling airbag 1 caused by mine pressure.

[0026] See Figure 1 , Figures 3-5 The windshield curtain 2 has an opening 14 on one side, through which a flexible hose 9 passes. An inner ring 13 is inserted into the opening 14. A first protective ring 10 is installed at one end of the inner ring 13 and is glued to the windshield curtain 2. A second protective ring 15 is installed at the end of the inner ring 13 away from the first protective ring 10 and is glued to the windshield curtain 2. The first protective ring 10 and the second protective ring 15 are located on both sides of the opening 14. The outer diameter of the flexible hose 9 is slightly smaller than the inner diameter of the inner ring 13. After the flexible hose 9 passes through the inner ring 13 in the opening 14, the inflation nozzle 8 is located on the side of the windshield curtain 2 away from the inflation airbag 1, which facilitates the inflation operation. The structure formed by the inner ring 13, the first protective ring 10 and the second protective ring 15 protects the area at the opening 14 of the windshield curtain 2.

[0027] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fire-stopping device for coal mines, comprising an inflatable bladder (1), characterized in that: The outer surface of the airbag (1) is fitted with a hose (9), and an inflation nozzle (8) is fitted at the end of the hose (9) away from the airbag (1). A windproof curtain (2) is provided on one side of the airbag (1), and a strip opening (12) is provided on one side of the windproof curtain (2). A first hook and loop fastener (6) is fitted on the outer surface of the airbag (1), and the first hook and loop fastener (6) passes through the strip opening (12). A hook and loop fastener (7) is attached to the end of the first hook and loop fastener (6) away from the airbag (1). The hook and loop fastener (7) is connected to the windproof curtain (2). A hook and loop fastener ring (11) is installed on the edge of the windproof curtain (2) away from the airbag (1). A second hook and loop fastener (3) is attached to the hook and loop fastener (11) to limit the relative position of two adjacent windproof curtains (2).

2. The fire-stopping device for coal mines according to claim 1, characterized in that: Multiple fabric strips (5) are installed on the hook and loop fastener (7). The fabric strips (5) and the hook and loop fastener (7) are integrally formed. The fabric strips (5) are connected and fixed to the windproof curtain (2).

3. A fire-stopping device for coal mines according to claim 1, characterized in that: The second hook and loop fastener (3) has multiple fabric loops (4) evenly sewn on the side facing away from the hook and loop fastener loop (11), and one side of the fabric loop (4) has a threading hole for inserting a cord.

4. A fire-prevention sealing device for coal mines according to claim 1, characterized in that: The windproof curtain (2) has an opening (14) on one side, and the flexible hose (9) passes through the opening (14).

5. A fire-stopping device for coal mines according to claim 4, characterized in that: An inner ring (13) is inserted into the opening (14). A first protective ring (10) is installed at one end of the inner ring (13). The first protective ring (10) is glued to the windshield curtain (2). A second protective ring (15) is installed at the end of the inner ring (13) away from the first protective ring (10). The second protective ring (15) is glued to the windshield curtain (2). The first protective ring (10) and the second protective ring (15) are located on both sides of the opening (14). The outer diameter of the hose (9) is slightly smaller than the inner diameter of the inner ring (13).

6. A fire-stopping device for coal mines according to claim 1, characterized in that: The windproof curtain (2) has a rectangular structure, and the cross-section of the Velcro loop (11) is rectangular.

7. A fire-stopping device for coal mines according to claim 1, characterized in that: The end of the hose (9) away from the inflation nozzle (8) is fitted with a rubber sheet that is connected and fixed to the hose (9). The rubber sheet is glued to the filling airbag (1).

8. A fire-stopping device for coal mines according to claim 1, characterized in that: The first Velcro hook-and-loop fastener (6) has a piece of fabric sewn onto one end of the airbag (1) near the filling bag, and the fabric is glued to the airbag (1).

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