Blasting dust reduction device for open-pit coal mine

Abstract

The utility model discloses open -air coal mine blast dust fall processing apparatus relates to blast dust fall technical field. Including: first explosive, sealing layer and first water bag, first water bag, sealing layer and first explosive are placed from top to bottom in proper order, the first explosive outside is equipped with the wire, dust fall subassembly is set up between sealing layer and first explosive for the dust particle settlement, dust fall subassembly includes fixed part and guide, fixed part sets up first explosive one side for the dust adsorption, guide sets up fixed part outside. The utility model discloses through the setting of fixed part and guide, has realized through the cooperation of protection pipe, guide ring, guide pipe, support frame and limit ring, thereby provides protection for second water bag, avoids the thickened second water bag and can reduce the break efficiency when blasting, leads to second water bag and cannot instantaneously fully fragment, and then influence the diffusion range and dispersing uniformity of water mist.

Description

Technical Field

[0001] This utility model relates to the field of blasting dust suppression technology, specifically to a dust suppression device for open-pit coal mine blasting. Background Technology

[0002] Open-pit coal blasting is a core technology in open-pit coal mining that uses the explosive energy of explosives to break coal seams and strip off topsoil and rock layers. Blasting breaks hard coal and rock into blocks suitable for transportation and processing, creating conditions for subsequent mining, loading, transportation, and dumping operations.

[0003] In existing coal mine blasting dust suppression methods using water bag dust suppression, the water bags are mostly placed directly inside the borehole. During placement, to prevent rock debris, sharp edges, or hard impurities remaining from drilling from tearing the water bag, the water bag walls are usually thickened. However, the thickened water bag walls reduce the rupture efficiency during blasting, causing the water bag to not rupture completely and instantly, thus affecting the diffusion range and uniformity of the water mist. Therefore, a dust suppression device for open-pit coal mine blasting is proposed. Utility Model Content

[0004] The purpose of this invention is to address the problem that thickened water bag walls reduce the rupture efficiency during blasting, preventing the water bag from breaking completely and affecting the diffusion range and uniformity of the water mist. This invention provides a dust suppression device for open-pit coal mine blasting.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] Dust control equipment for blasting in open-pit coal mines includes:

[0007] The first explosive, the sealing layer and the first water bag are placed in order from top to bottom, and the first explosive is provided with a wire on the outside.

[0008] A dust suppression component is disposed between the sealing layer and the first explosive and is used to settle dust particles. The dust suppression component includes a fixing component and a guide component. The fixing component is disposed on one side of the first explosive and is used to adsorb dust. The guide component is disposed on the outside of the fixing component and is used to guide the fixing component. The fixing component works with the guide component to control the dust.

[0009] Furthermore, the fixing component includes a protective tube, and there is at least one protective tube. A second water bag is provided inside the protective tube. A rotating groove is provided on the outside of the protective tube, and there are multiple rotating grooves. A rotating block is rotatably connected inside the rotating groove.

[0010] Furthermore, the protective tube is provided with a guide ring and a connecting ring at both ends, and the guide ring is threadedly connected to the protective tube.

[0011] Furthermore, the guide includes a guide tube, which is screwed to a connecting ring. A limiting ring and a support frame are sequentially arranged inside the guide tube, and both the limiting ring and the support frame are located directly below the second water bag.

[0012] Furthermore, the inner wall of the guide tube is also provided with a guide tube, and the guide tube is located directly below the limiting ring.

[0013] Furthermore, the first water bag is annular in shape, and a second explosive is provided on the inner wall of the first water bag.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention, through the setting of fixing and guiding components, achieves protection for the second water bag through the cooperation of protective tube, guide ring, guide tube, support frame and limiting ring, thereby avoiding the thickened second water bag from reducing the bursting efficiency during bursting, which would prevent the second water bag from breaking completely instantly and thus affecting the diffusion range and dispersion uniformity of water mist. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the mounting structure of this utility model;

[0017] Figure 2 This is an enlarged view of the fastener of this utility model;

[0018] Figure 3 This is a partial sectional view of the protective tube of this utility model;

[0019] Figure 4 This is an exploded view of the fastener of this utility model;

[0020] Figure 5 This is a partial sectional view of the guide tube of this utility model;

[0021] Figure 6 This is an enlarged view of the first water bag of this utility model;

[0022] Reference numerals in the attached drawings: 1. First explosive; 101. Conductor; 103. Sealing layer; 2. Fixing element; 201. Protective tube; 202. Second water bag; 203. Guide ring; 204. Rotating block; 205. Rotating groove; 206. Connecting ring; 3. Guide element; 301. Guide tube; 302. Support frame; 303. Limiting ring; 304. Guide tube; 4. First water bag; 402. Second explosive. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] like Figures 1 to 6As shown, the open-pit coal mine blasting dust suppression device includes: a first explosive 1, a sealing layer 103, and a first water bag 4, which are placed sequentially from top to bottom. A wire 101 is provided on the outside of the first explosive 1. A dust suppression component is disposed between the sealing layer 103 and the first explosive 1 to settle dust particles. The dust suppression component includes a fixing member 2 and a guide member 3. The fixing member 2 is disposed on one side of the first explosive 1 to adsorb dust, and the guide member 3 is disposed on the outside of the fixing member 2 to guide the fixing member 2. The fixing member 2 works in conjunction with the guide member 3 to control the dust. Specifically, during the blasting of the coal mine... During the blasting process, the first explosive 1 and the first water bag 4 are first installed inside the borehole and at the top of the borehole, respectively. Then, the assembled fixing part 2 and the guide part 3 are installed on the top of the first explosive 1. Finally, the borehole is sealed with the sealing layer 103 to ensure the effectiveness of the first explosive 1 during the blasting process. When the first explosive 1 blasts the coal mine, the dust generated is adsorbed and settled by the cooperation of the first water bag 4 and the fixing part 2 to prevent the dust from being dispersed with the airflow. The first explosive 1 is also equipped with a detonator, which is connected to the wire 101. Thus, during use, the signal is transmitted through the wire 101 to detonate the first explosive 1, ensuring precise control of the blasting operation.

[0029] like Figures 1 to 6As shown, the fixing component 2 includes a protective tube 201, and there is at least one protective tube 201. A second water bag 202 is installed inside the protective tube 201. Multiple rotating grooves 205 are opened on the outer side of the protective tube 201. A rotating block 204 is rotatably connected inside the rotating groove 205. Specifically, before blasting in a coal mine, water is first stored in the second water bag 202. Dust suppressants and other auxiliary substances can be added to the water as needed to enhance its dust adsorption capacity. Then, the second water bag 202 containing water is placed inside the protective tube 201. The protective tube 201 is made of high-strength alloy material, which is hard and has a certain degree of elasticity, thus providing all-round protection for the second water bag 202 during installation, preventing the second water bag 202 from rubbing against the borehole wall and causing water leakage inside the second water bag 202. After the protective tube 201 is installed, the rotating block 204 inside the rotating groove 205... 04 will rotate outward under the action of gravity and borehole wall pressure. The rotating block 204, through close contact with the borehole wall, provides unidirectional restraint to the protective tube 201, forming a firm fixed structure. This prevents the protective tube 201 from moving upward under the action of the blasting impact, ensuring the stability of the protective tube 201 during the blasting process. The second water bag 202 can be made of polyethylene or polyvinyl chloride. Both of these materials have good flexibility and sealing properties. The wall thickness of the second water bag 202 is 0.03 to 0.55 mm, which can ensure the sealing when storing water and can also be easily broken and atomized under the blasting impact. The size of the protective tube 201 can be selected according to the borehole diameter and depth. The size of the second water bag 202 can be selected according to the borehole depth and the amount of the first explosive 1. When the amount of the first explosive 1 is large and a lot of dust is expected to be generated, a larger size second water bag 202 can be selected to ensure the dust suppression effect during the blasting process.

[0030] like Figures 1 to 6 As shown, the protective tube 201 has a guide ring 203 and a connecting ring 206 at both ends. The guide ring 203 is threadedly connected to the protective tube 201. Specifically, the guide ring 203 can effectively limit the second water bag 202 placed inside the protective tube 201 during use. It has an elastic rubber ring on its inner side, which fits tightly against the outer wall of the second water bag 202 to prevent the second water bag 202 from sliding out of the protective tube 201 under the action of impact. The diameter of the guide ring 203 gradually expands from the middle to both ends, forming a flared structure. This structure is optimized by fluid mechanics, so that it can guide the flow of water and convert pressure during use. This allows the water to gain continuous kinetic energy gain when passing through the structure, thereby accelerating the water. This not only increases the initial speed of the water jet, but also ensures the uniformity of water diffusion, laying a solid foundation for subsequent efficient atomization and dust suppression. At the same time, the threaded connection between the guide ring 203 and the protective tube 201 is easy to install and disassemble, and can be replaced and adjusted according to actual needs.

[0031] like Figures 1 to 6 As shown, the guide component 3 includes a guide tube 301, which is screwed to the connecting ring 206. Inside the guide tube 301, a limiting ring 303 and a support frame 302 are arranged in sequence. Both the limiting ring 303 and the support frame 302 are located directly below the second water bag 202. Specifically, when the protective tube 201 is inserted into the borehole, the guide tube 301 guides the protective tube 201 smoothly while increasing the distance between the second water bag 202 and the borehole wall, preventing the protective tube 201 from being damaged by contact with protruding stones on the borehole wall during installation. The limiting ring 303, together with the support frame 302, provides stable support for the bottom of the second water bag 202. The support frame 302 adopts a triangular support structure, which has good stability and load-bearing capacity, ensuring the stability of the position of the second water bag 202 during use. The limiting ring 303 and the guide tube 301 can be connected by a snap or a thread. Both connection methods are easy to operate and the connection is firm, making it easy to choose according to the actual situation.

[0032] like Figures 1 to 6 As shown, the inner wall of the guide tube 301 is also provided with a guide tube 304, and the guide tube 304 is located directly below the limiting ring 303. Specifically, the guide tube 304 is in the shape of an inverted funnel, and its inner wall is polished to reduce airflow resistance. During use, it can efficiently guide the upward shock wave after the first explosive 1 explodes. Through the gathering characteristics of the funnel, the scattered shock wave energy is concentrated and guided along the inner wall of the guide tube 304 to the upper preset area, thereby concentrating the energy on the upper second water bag 202. This causes the second water bag 202 to be subjected to a strong impact force in an instant, breaking more thoroughly and producing a finer water mist with a wider distribution range, enhancing the atomization effect when the second water bag 202 breaks, thereby significantly improving the dust suppression efficiency.

[0033] like Figures 1 to 6As shown, the first water bag 4 is annular in shape, and the inner wall of the first water bag 4 is equipped with a second explosive 402. Specifically, the first water bag 4 completely surrounds the top of the borehole, and its circular shape is adapted to the contour of the top of the borehole. It is made of high-pressure resistant and tear-resistant composite material to ensure stable operation under explosive impact. Through the annular constraint and guiding effect formed by the circular structure, the water mist is effectively guided to diffuse evenly in all directions and cover the entire top area of ​​the borehole, forming a complete annular water curtain. This avoids the problem of local accumulation or uneven diffusion of water mist, further improving the dust suppression effect. The height and size can be selected according to the drilling depth and the amount of the first explosive 1. When the drilling is deep and the amount of the first explosive 1 is large, a first water bag 4 with a higher height and larger size can be selected. The detonation time of the second explosive 402 is controlled by a precise timer and is precisely set to be 0.5 to 1 second in advance. This allows the water mist formation mechanism to be triggered before the dust generated by the explosion of the first explosive 1 is fully raised and spread. This enables the atomized water curtain to form a closed barrier in the initial stage of the dust diffusion path, allowing the dust that is subsequently raised to fully contact the water mist and settle quickly.

[0034] like Figures 1 to 6 As shown, the working state of the open-pit coal mine blasting dust suppression device is as follows: Before blasting the coal mine, the device must be set up according to the procedure: First, the first explosive 1, protective pipe 201, second water bag 202 and sealing layer 103 are placed precisely inside the borehole in sequence to ensure that the positions of each component are appropriate. Then, the first water bag 4 is securely placed at the top of the borehole. After the setup is complete, the second explosive 402 is precisely controlled to detonate the first water bag 4 in advance, so that the water inside the first water bag 4 is atomized in a very short time, forming a fine water curtain at the top of the borehole in advance. Then, the first explosive 1 is controlled to blast the coal mine. During the process of the first explosive 1 detonating and generating impact force, the water inside the second water bag 202 is simultaneously squeezed by shock waves. The pressure causes the water inside the second water bag 202 and the dust generated by the explosion to be simultaneously thrown upwards along the borehole channel. The water mist and dust mix thoroughly and are quickly adsorbed during the ascent, achieving efficient dust capture. It is worth noting that the placement of the second water bag 202 can be flexibly selected according to the characteristics of dust generation on site. For example, the second water bag 202 can be placed at both the top and bottom of the first explosive 1 to form a pincer attack; the second water bag 202 can be placed only at the bottom of the first explosive 1 to focus on suppressing the upward movement of dust at the bottom; or the second water bag 202 can be placed only at the top of the first explosive 1 to enhance the synergistic effect with the top water curtain. Through different placement methods, the diffusion path of the blasting dust can be specifically adapted to achieve differentiated dust suppression effects.

[0035] In summary, this utility model includes: a first explosive 1, a sealing layer 103, and a first water bag 4, which are placed sequentially from top to bottom. A wire 101 is provided on the outside of the first explosive 1. A dust suppression component is disposed between the sealing layer 103 and the first explosive 1 to settle dust particles. The dust suppression component includes a fixing member 2 and a guide member 3. The fixing member 2 is disposed on one side of the first explosive 1 to adsorb dust, and the guide member 3 is disposed on the outside of the fixing member 2 to guide the fixing member 2. The fixing member 2 works with the guide member 3 to control the dust. Through the setting of the fixing member 2 and the guide member 3, this utility model achieves protection for the second water bag 202 through the cooperation of the protective tube 201, the guide ring 203, the guide tube 301, the support frame 302, and the limiting ring 303. This avoids the thickened second water bag 202 from reducing the rupture efficiency during explosion, which would prevent the second water bag 202 from breaking instantly and fully, thus affecting the diffusion range and dispersion uniformity of the water mist.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust suppression device for blasting in open-pit coal mines, characterized in that, include: The first explosive, the sealing layer and the first water bag are placed in order from top to bottom, and the first explosive is provided with a wire on the outside. A dust suppression component is disposed between the sealing layer and the first explosive and is used to settle dust particles. The dust suppression component includes a fixing component and a guide component. The fixing component is disposed on one side of the first explosive and is used to adsorb dust. The guide component is disposed on the outside of the fixing component and is used to guide the fixing component. The fixing component works with the guide component to control the dust.

2. The open-pit coal mine blasting dust suppression device according to claim 1, characterized in that, The fastener includes a protective tube, and there is at least one protective tube. A second water bag is provided inside the protective tube. A rotating groove is provided on the outside of the protective tube, and there are multiple rotating grooves. A rotating block is rotatably connected inside the rotating groove.

3. The open-pit coal mine blasting dust suppression device according to claim 2, characterized in that, The protective tube is provided with a guide ring and a connecting ring at both ends, and the guide ring is threadedly connected to the protective tube.

4. The open-pit coal mine blasting dust suppression device according to claim 3, characterized in that, The guide includes a guide tube, which is screwed to a connecting ring. Inside the guide tube, a limiting ring and a support frame are arranged in sequence, and both the limiting ring and the support frame are located directly below the second water bag.

5. The open-pit coal mine blasting dust suppression device according to claim 4, characterized in that, The inner wall of the guide tube is also provided with a guide tube, and the guide tube is located directly below the limiting ring.

6. The open-pit coal mine blasting dust suppression device according to claim 1, characterized in that, The first water bag is circular in shape, and the inner wall of the first water bag is provided with a second explosive.

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