Blasthole plugging device for underground mining of coal mine

Abstract

The utility model belongs to the technical field of blasthole plugging, and particularly relates to a coal mine underground excavation blasthole plugging device which comprises a bag body internally provided with a containing space and an inlet arranged at one end of the bag body and communicated with the containing space. A limiting part used for limiting a rope wound around the periphery of the bag body is arranged on the side, close to the inlet, of the bag body, and during use, the containing space is filled with water through the inlet, then a dense rope is used for winding the bag body, limiting is conducted through the limiting part, and therefore the rope is prevented from shifting or loosening due to friction in the process that the bag body is tamped into a shot hole. Through the arrangement of the limiting part, the problem that a rope is prone to displacement or looseness in the process that the blister mud bag is pounded into a shot hole is effectively solved, and therefore the sealing performance of the blister mud bag is ensured, the water leakage condition is prevented, the plugging efficiency is improved, and the operation safety is further enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of blasthole plugging technology, and particularly relates to a coal mine underground mining blasthole plugging device. BACKGROUND

[0002] The water mortar bag is a special product for blasting and dust removal and electric spark prevention in a coal mine, is made by injecting water into a cylindrical polyethylene plastic bag and sealing the opening, and has a length of about 250-300 mm and a diameter slightly smaller than the blasthole diameter. In the use process of the water mortar, water needs to be filled into the water mortar bag. For the water mortar bag with automatic sealing function, the bag opening can be automatically sealed through a specific mechanism after being filled with water, so as to ensure the sealing effect. If the water mortar bag does not have the automatic sealing function, the bag opening needs to be manually tied or fixed by using a clamp, a rope or other tools. In a specific environment, the water mortar bag filled with water and sealed cannot be carried to the coal mine, and water needs to be filled on site and the water mortar bag needs to be tied by using a rope or other tools. However, the water mortar bag does not have a mechanism for limiting the rope, and the rope is easily displaced or loosened due to friction with impurities in the blasthole during the process of ramming the water mortar bag into the blasthole, so that the water mortar bag is not tightly sealed and water leakage easily occurs. SUMMARY

[0003] In view of the above problems, the utility model aims to provide a coal mine underground mining blasthole plugging device to solve the problems in the background.

[0004] To achieve the above purpose, the utility model adopts the technical scheme of a coal mine underground mining blasthole plugging device, which comprises a bag body having an accommodating space and an inlet arranged at one end of the bag body and connected with the accommodating space. A limiting portion for limiting the rope wound around the outer periphery of the bag body is arranged on the side of the bag body close to the inlet. In use, water is filled into the accommodating space through the inlet, and then the rope is wound around the bag body and limited by the limiting portion to prevent the rope from being displaced or loosened due to friction during the process of ramming the bag body into the blasthole.

[0005] The utility model has the advantages that the limiting portion is arranged to effectively solve the problem that the rope is easily displaced or loosened during the process of ramming the water mortar bag into the blasthole, so as to ensure the sealing property of the water mortar bag and prevent water leakage, which not only improves the plugging efficiency but also enhances the safety of operation.

[0006] In order to protect the bag body from scratches caused by the rope winding:

[0007] As a further improvement of the above technical scheme, the side of the limiting portion away from the inlet is connected with a protective film for preventing the bag body from being scratched after the rope is wound around the bag body.

[0008] The improved beneficial effect is that the limiting part is connected with the protective film away from the entrance side, which is attached to the outer surface of the bag body, further protects the bag body from scratches caused by the rope winding, prolongs the service life of the bag body, and also reduces the risk of water leakage caused by bag damage.

[0009] In order to facilitate the winding and fixing of the rope on the bag body:

[0010] As a further improvement of the above technical solution: the limiting part is a ring-shaped protrusion arranged on the outer wall of the bag body.

[0011] The improved beneficial effect is that the limiting part is arranged as a ring-shaped protrusion, which facilitates the winding and fixing of the rope on the bag body.

[0012] In order to realize the sealing of the bag body:

[0013] As a further improvement of the above technical solution: the number of limiting parts is at least one.

[0014] The improved beneficial effect is that when the number of limiting parts is one, it is arranged at one end close to the entrance, and the protective film is located at the bottom of the limiting part. After the rope is wound on the bag body, the gap of the entrance is reduced, and the excess end of the rope wound on the bag body is knotted, realizing the sealing of the bag body.

[0015] In order to further ensure the stability of the sealing of the bag body:

[0016] As a further improvement of the above technical solution: the number of limiting parts is two, and the two ends of the protective film are connected with the two limiting parts respectively.

[0017] The improved beneficial effect is that when the number of limiting parts is two, the protective film is located between the two limiting parts and is fixedly connected with the two limiting parts respectively. After the rope is wound on the bag body between the two limiting parts, the two limiting parts can prevent the rope from sliding towards the entrance and away from the entrance, thereby further ensuring the stability of the sealing of the bag body.

[0018] In order to realize the stable connection of the rope and the bag body:

[0019] As a further improvement of the above technical solution: the surface of the limiting part is provided with a plurality of limiting holes for the rope to pass through, realizing the stable connection of the rope and the bag body.

[0020] The improved beneficial effect is that a plurality of limiting holes are provided on the surface of the limiting part. After the rope is wound on the bag body, the free end of the rope passes through the adjacent two limiting holes and is knotted. This design realizes the stable connection of the rope and the bag body, avoids the loosening or falling off of the rope during the process of driving into the hole, and thus ensures the durability of the plugging effect.

[0021] In order to reduce the probability of water leakage of the bag caused by the rope slipping off or loosening from the bag:

[0022] As a further improvement of the above technical solution: the middle part of the protective film is fixedly provided with a separation line, so that two ropes can be respectively threaded through the limiting holes and seal the entrance.

[0023] The beneficial effects of the improvement are: when the number of limiting parts is two, two ropes are respectively used on both sides of the separation line to be wound on the bag, the sealing effect is enhanced by increasing the number of ropes, the free ends of the two ropes are respectively threaded through the adjacent two limiting holes on the two limiting parts, the stable connection of the two ropes and the bag is realized, and thus the probability of water leakage of the bag caused by the rope slipping off or loosening from the bag can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the prior art of the utility model;

[0025] Figure 2 It is a structural schematic view of the first embodiment of the utility model;

[0026] Figure 3 It is a side view of the first embodiment of the utility model;

[0027] Figure 4 It is a structural schematic view of the second embodiment of the utility model;

[0028] Figure 5 It is a side view of the first embodiment of the utility model.

[0029] In the figure: 1, accommodating space; 2, bag; 3, entrance; 4, limiting part; 5, protective film; 6, annular protrusion; 7, limiting hole; 8, separation line. DETAILED DESCRIPTION

[0030] In order to make the skilled in the art better understand the technical scheme of the utility model, the utility model is described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model.

[0031] As Figure 1 shown, it is the existing hole plugging device of the utility model, which mainly comprises a bag 2 with an accommodating space 1 in the inside and an entrance 3 arranged at one end of the bag 2 and connected with the accommodating space 1, in use, the water bubble mud bag of a suitable size is selected according to the length of the hole, water is poured into the bag 2 through the entrance 3, and the water amount is about two-thirds of the accommodating space 1, for the water bubble mud bag that cannot be sealed by the edge sealing machine, the rope is often used to tighten the entrance 3 of the bag 2, and the above is the introduction of the existing hole plugging device.

[0032] From the above, the existing hole plugging device has the following defects in use: the existing bubble mud bag is smooth in surface, no assembly for limiting the rope is arranged, and no mechanism for connecting the rope and the bubble mud bag is arranged, if the rope is slippery or not strong enough, the way of tying the rope is incorrect or not firm enough, or the force is too strong or the way is improper when the bubble mud bag is hammered into the hole, the bubble mud bag may be broken or the rope may be loosened due to too large impact force, or the rope may be displaced from the bubble mud bag due to the existence of sharp stones or other objects in the hole during the hammering process, so that the bubble mud bag leaks, and thus the hole plugging effect cannot be achieved. Based on the above problems, the present utility model adopts the following improvement mode for solution.

[0033] As shown in Figures 2-5 , a hole plugging device for underground coal mining, comprising a bag body 2 having an accommodating space 1 inside and an inlet 3 arranged at one end of the bag body 2 and communicating with the accommodating space 1, a limiting portion 4 is arranged on the side of the bag body 2 close to the inlet 3 for limiting the rope wound on the outer periphery of the bag body 2, in use, water is filled into the accommodating space 1 through the inlet 3, then a tight rope is wound around the bag body 2 and limited by the limiting portion 4 to prevent the rope from being displaced or loosened due to friction during the process of hammering the bag body 2 into the hole. By arranging the limiting portion 4, the problem of easy displacement or loosening of the rope during the process of hammering the bubble mud bag into the hole is effectively solved, so as to ensure the sealing property of the bubble mud bag and prevent the occurrence of water leakage, which not only improves the plugging efficiency, but also enhances the safety of operation.

[0034] Further, as shown in Figures 2-5 , a protective film 5 is connected to the side of the limiting portion 4 away from the inlet 3 and adheres to the outer surface of the bag body 2, the protective film 5 can be made of plastic or rubber material, which further protects the bag body 2 from scratches caused by the rope winding, prolongs the service life of the bag body 2, and reduces the risk of water leakage caused by damage of the bag body 2.

[0035] Further, as shown in Figure 3 or 5, a plurality of limiting holes 7 are arranged on the surface of the limiting portion 4, after the rope is wound on the bag body 2, the free end of the rope passes through two adjacent limiting holes 7 and is knotted, this design realizes the stable connection of the rope and the bag body 2, avoids loosening or falling off of the rope during the process of hammering into the hole, and thus ensures the durability of the plugging effect.

[0036] Further, as shown in Figures 2-3As shown, it is the first embodiment of the utility model, the limiting portion 4 is annular protrusion 6 set in the outer wall of the bag body 2, can be rubber or plastic material, will not produce friction to the bag body 2, also will not affect the water bubble mud bag into the gun hole, the number of limiting portion 4 is at least one, when the number of limiting portion 4 is one, it is set in the end close to the entrance 3, the protective film 5 is located at the bottom of the limiting portion 4, after the rope is wound on the bag body 2, the gap of the entrance 3 is reduced, the excess end portion after the rope is wound on the bag body 2 is knotted, the sealing of the bag body 2 is realized.

[0037] Further, as Figures 4-5 As shown, it is the second embodiment of the utility model, when the number of limiting portion 4 is two, the protective film 5 is located between the two limiting portions 4, and is fixedly connected with the two limiting portions 4 respectively, after the rope is wound on the bag body 2 between the two limiting portions 4, the two limiting portions 4 can prevent the rope from sliding to the side close to the entrance 3 and away from the entrance 3, so that the stability of the sealing of the bag body 2 can be further ensured, the middle part of the protective film 5 is fixedly provided with a separation line 8, two ropes are wound on the bag body 2 on the two sides of the separation line 8 respectively, the sealing effect is enhanced by increasing the number of ropes, the free ends of the two ropes respectively pass through the adjacent two limiting holes 7 on the two limiting portions 4, the stable connection of the two ropes and the bag body 2 is realized, so that the probability of the bag body 2 leaking due to the rope slipping off or loosening from the bag body 2 can be reduced.

[0038] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices.

[0039] The principle and implementation mode of the utility model are described by applying specific examples herein, and the above example is only used to help understand the method and core idea of the utility model. The above description is only the preferred implementation mode of the utility model, and it should be pointed out that due to the limited expression, there are infinite specific structures objectively, and for ordinary technical personnel in the technical field, some improvements, decorations or changes can be made without departing from the principle of the utility model, and the above technical features can be combined in a proper way, and these improvements, decorations, changes or combinations, or the invention concept and technical scheme are directly applied to other occasions without improvement, which should be regarded as the protection scope of the utility model.

Claims

1. A sealing device for blast holes in underground coal mines, comprising a bag (2) having an internal receiving space (1) and an entrance (3) disposed at one end of the bag (2) and communicating with the receiving space (1), characterized in that: The bag body (2) is provided with a limiting part (4) on the side near the inlet (3) for limiting the rope wrapped around the outer periphery of the bag body (2). In use, water is filled into the containing space (1) through the inlet (3), and then the bag body (2) is wrapped with a tight rope and limited by the limiting part (4) to prevent the rope from shifting or loosening due to friction during the process of tamping the bag body (2) into the blast hole.

2. The device for sealing blast holes in underground coal mines according to claim 1, characterized in that: The limiting part (4) is connected to a protective film (5) on the side away from the entrance (3) to prevent the rope from getting tangled in the bag body (2) and causing marks on the bag body (2).

3. A sealing device for blast holes in underground coal mines according to claim 2, characterized in that: The limiting part (4) is an annular protrusion (6) provided on the outer wall of the bag body (2).

4. A sealing device for blast holes in underground coal mines according to claim 3, characterized in that: The number of the limiting part (4) is at least one.

5. A sealing device for blast holes in underground coal mines according to claim 3, characterized in that: There are two limiting parts (4), and at this time, the two ends of the protective film (5) are respectively connected to the two limiting parts (4).

6. A sealing device for blast holes in underground coal mines according to any one of claims 1-5, characterized in that: The surface of the limiting part (4) is provided with multiple limiting holes (7) for the rope to pass through, so as to achieve a stable connection between the rope and the bag body (2).

7. A sealing device for blast holes in underground coal mines according to claim 5, characterized in that: A dividing line (8) is fixedly installed in the middle of the protective film (5) to facilitate the use of two ropes to pass through the limiting hole (7) and seal the entrance (3).

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