Dustproof water curtain of coal mine tunnel

Abstract

The utility model relates to a dust-proof water curtain for a coal mine tunnel. The dust-proof water curtain comprises a base; the supporting part comprises two supporting rods which are detachably installed on the upper surface of the base and extend in the height direction, and the two supporting rods are installed at the positions, close to the two ends, of the base in the left-right direction respectively; the dustproof net is hung between the two supporting rods; the spraying part is used for spraying water towards the dustproof net, and the lengths of the two supporting rods are adjustable. Water is sprayed to the dustproof net through the spraying part, so that a section water curtain can be formed on the dustproof net, dust in a roadway is adsorbed and intercepted, and the dustproof effect is achieved. And when the height of the roadway changes, the height of the dustproof water curtain can be adjusted by adjusting the heights of the two supporting rods so as to adapt to roadways with different heights. Dustproof water curtains do not need to be redesigned and manufactured for roadways with different heights, use is flexible and convenient, cost is reduced, and working efficiency is improved.

Description

Technical Field

[0001] This disclosure relates to the field of dust control technology for coal mine roadways, and more specifically, to a dust control water curtain for coal mine roadways. Background Technology

[0002] Coal dust is one of the major hazards in coal mining. Workers who work underground in coal mines for a long time are prone to pneumoconiosis. In addition, the visibility of workers in high-concentration dust work sites is easily obstructed, which can easily lead to personal injury accidents during operation. Furthermore, coal dust is explosive and can easily cause coal dust explosions, posing a serious threat to the safe production of mines.

[0003] Due to the high roof pressure and severe roadway deformation in the fully mechanized mining face ventilation roadway, the height of the dust suppression water curtain device needs to be adjusted promptly according to the roadway elevation to achieve the desired dust control effect. However, in related technologies, the height of the dust suppression water curtain is usually not adjustable. It can only be measured first, and then a new dust suppression water curtain of the new height must be fabricated on the ground before going down into the mine to replace it. This operation is cumbersome, time-consuming, and very inconvenient. Utility Model Content

[0004] The purpose of this disclosure is to provide a dust-proof water curtain for coal mine roadways, so as to at least partially solve the problems existing in the related technologies.

[0005] To achieve the above objectives, this disclosure provides a dust-proof water curtain for coal mine roadways, comprising: a base; a support unit including two support rods extending in the height direction and detachably mounted on the upper surface of the base, the two support rods being respectively mounted on the base near both ends in the left-right direction; a dust-proof net hanging between the two support rods; and a spray unit for spraying water toward the dust-proof net, wherein the lengths of the two support rods are adjustable.

[0006] Optionally, the support rod includes multiple sub-rods that are detachably connected end to end along the length direction, and the multiple sub-rods have the same structure.

[0007] Optionally, one end of the sub-rod is provided with a protruding structure, and the other end is provided with a recessed structure adapted to the protruding structure.

[0008] Optionally, the side wall of the sub-rod is provided with hanging rings near both ends for connecting to the dustproof net, and the dustproof net is provided with hooks at the positions corresponding to the hanging rings.

[0009] Optionally, the spray unit includes: a spray pipe, which is closed at both ends and detachably mounted on the top of a corresponding support rod at both ends, and the pipe wall of the spray pipe is provided with a water inlet; a plurality of spray nozzles, which are distributed sequentially along the length of the spray pipe; and a water supply assembly connected to the water inlet.

[0010] Optionally, the base is constructed as a water storage tank with a concave upper surface, and the water supply assembly includes a pump body disposed in the water storage tank and a pipeline connecting the pump body and the water inlet.

[0011] Optionally, the base also includes a support cover that is detachably attached to the opening of the water storage tank, the support cover being configured as a hollow structure with multiple return water holes.

[0012] Optionally, a liquid level sensor is provided in the water storage tank. The liquid level sensor is used to control the pump to start when the water level in the water storage tank is detected to be higher than a first preset position, and to control the pump to shut down when the water level in the water storage tank is detected to be lower than a second preset position.

[0013] Optionally, a three-way valve is connected between the pipeline and the water inlet, and the dustproof water curtain also includes a controller for connecting to the pump body, the liquid level sensor and the three-way valve respectively.

[0014] Optionally, it also includes a protective net disposed inside the water storage tank. The protective net is used to form a protective space for placing the pump body, and the two ends of the protective net in the height direction respectively abut against the bottom wall of the water storage tank and the bottom surface of the bearing cover, wherein the protective space avoids the return water hole.

[0015] Optionally, it also includes a switch disposed on the base for controlling the spray unit.

[0016] Optionally, there are multiple support parts, which are arranged sequentially along the front-rear direction of the base, and a dustproof net is provided between the two support rods of each support part.

[0017] The above technical solution uses a spray system to spray water onto the dust-proof net, creating a cross-sectional water curtain that adsorbs and intercepts dust in the tunnel, achieving a dust-proof effect. Furthermore, the height of the water curtain can be adjusted by changing the height of the two support rods to accommodate tunnels of varying heights. This eliminates the need to redesign and manufacture water curtains for different tunnel heights, offering flexibility, convenience, reduced costs, and improved work efficiency.

[0018] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1This is a front view of a dustproof water curtain exemplarily shown according to this disclosure;

[0021] Figure 2 This is a front view of a sub-rod exemplarily shown according to this disclosure;

[0022] Figure 3 This is a top view of a base exemplarily shown according to this disclosure;

[0023] Figure 4 This is a top view of a base with a support cover installed, as exemplarily shown in this disclosure;

[0024] Figure 5 This is a side view of a spray unit and a water pipe in a mating state, as exemplarily shown in this disclosure.

[0025] Explanation of reference numerals in the attached figures

[0026] 100-Base; 101-Water storage tank; 102-Bearing cover; 103-Return water hole; 104-Level sensor; 200-Support part; 210-Support rod; 211-Sub-rod; 300-Dustproof net; 301-Hook; 400-Spraying part; 410-Spraying pipe; 411-Water inlet; 420-Spray head; 431-Pump body; 432-Pipeline; 501-Protruding structure; 502-Recessed structure; 503-Hanging ring; 600-Controller; 700-Protective net; 701-Protective space. Detailed Implementation

[0027] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0028] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower," "top" and "bottom" can refer to the structure of the relevant components themselves, or to their orientation when used together. For example, the "upper" surface of the base refers to the surface of the base that faces away from the roadway floor when it is installed in the roadway; the two ends of the protective net in the height direction respectively abut against the "bottom" wall of the water storage tank and the "bottom" surface of the bearing cover, where "bottom" refers to the wall surface of the relevant component that is close to or faces the roadway floor; the "height direction" refers to the direction perpendicular to the roadway floor; the "left and right direction" refers to the left and right direction when workers pass through the dustproof water curtain; the "front and back direction" refers to the front and back direction when workers pass through the dustproof water curtain. The "front and back direction," "left and right direction," and "height direction" can also be referred to with reference to the corresponding arrow directions in the accompanying drawings.

[0029] In this disclosure, the terms "first," "second," etc., are used to distinguish one element from another and do not indicate any order or importance. When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] Reference Figures 1-5 This disclosure exemplarily illustrates a dust-control water curtain for coal mine roadways, including a base 100, a support 200, and a dust-control net 300. The support 200 includes two support rods 210 extending along the height direction and detachably mounted on the upper surface of the base 100. The two support rods 210 are respectively installed near the two ends of the base 100 in the left-right direction. The dust-control net 300 is hung between the two support rods 210. A spray unit 400 sprays water toward the dust-control net 300. The lengths of the two support rods 210 are adjustable. Here, the dust-control net 300 refers to a sheet-like mesh, the mesh size of which is not limited. Hanging between the two support rods 210 and sprayed with water by the spray unit 400, it adheres to form a water film, thus creating a dust-control water curtain.

[0031] This disclosure does not limit the structure of the base 100 or its detachable connection with the support rod 210. For example, in the embodiments of this disclosure, the base 100 is constructed as a water tank structure as mentioned below, or it can also be constructed as a solid plate structure. In the embodiments of this disclosure, the base 100 may be provided with an elongated hole structure for inserting the support rod 210 at the position corresponding to the support rod 210, thereby realizing a detachable connection between the two. In addition, in some other embodiments, the support rod 210 and the base 100 may also be detachably screwed together by threads. The base 100 is mainly used to provide an installation position for the support rod 210 and to balance the entire dustproof water curtain to prevent it from tipping over. The two support rods 210 are mainly used to provide an installation position for the dustproof net 300. Hanging the dustproof net 300 between the two support rods 210 can form the "forming section" of the water curtain.

[0032] This disclosure does not limit the spray unit 400. For example, in embodiments of this disclosure, it may include spray pipes and multiple nozzles, as mentioned below. Furthermore, in some other embodiments, it may include only a single rotatable nozzle that rotates to spray water at various locations on the dust screen 300 to form a water curtain.

[0033] This disclosure does not impose any restrictions on how the support rod 210 achieves telescopicity; the specific details will be described in the embodiments below.

[0034] By using the above technical solution, water sprayed from the spray unit 400 towards the dustproof net 300 forms a cross-sectional water curtain on the dustproof net 300, which adsorbs and intercepts dust in the tunnel, achieving a dust prevention effect. Furthermore, the height of the dustproof water curtain can be adjusted by adjusting the height of the two support rods 210 to adapt to tunnels of different heights. There is no need to redesign and manufacture dustproof water curtains for tunnels of different heights, making it flexible, convenient, cost-effective, and improving work efficiency.

[0035] Reference Figure 1 and Figure 2 In the embodiments of this disclosure, the support rod 210 may include multiple sub-rods 211 that are detachably connected end-to-end along the length direction, and the multiple sub-rods 211 have identical structures. The required length of the support rod 210 can be obtained by selecting the number of sub-rods 211 and connecting them end-to-end. For example, when the length of the support rod 210 needs to be increased, it can be achieved by increasing the number of sub-rods 211; when the length of the support rod 210 needs to be decreased, it can be achieved by decreasing the number of sub-rods 211. The identical structure of the sub-rods 211 reduces procurement costs and assembly difficulty. Each time the height of the dustproof water curtain needs to be changed, it can be adjusted directly in the tunnel, making operation convenient and simple.

[0036] This disclosure does not limit the structure of the sub-rod 211 or the connection method between two adjacent sub-rods 211, for example... Figure 2 In the illustrated embodiment, one end of the sub-rod 211 may be provided with a protruding structure 501, and the other end may be provided with a recessed structure 502 adapted to the protruding structure 501. During installation, a detachable connection can be achieved by inserting the protruding structure 501 of one adjacent sub-rod 211 into the recessed structure 502 of the other. It should be noted that the outer contour of the protruding structure 501 and the inner contour of the recessed structure 502 are equal to or similar to each other, so that they can fit tightly together to achieve a connection. This disclosure does not limit the specific structure of the protruding structure 501 and the recessed structure 502. For example, the protruding structure 501 can be... Figure 2 The cylinder shown is illustrated. Furthermore, in some other embodiments, the cross-section of the protruding structure 501 can also be rectangular, in which case it can prevent relative rotation between two adjacent sub-rods 211. Besides the connection methods described above, in some other embodiments, two adjacent sub-rods 211 can also be connected by a threaded sleeve. Specifically, the interconnecting ends of the two sub-rods 211 can each have external threads, and the threaded sleeve can have internal threads. During installation, the ends of the sub-rods 211 are screwed into the threaded sleeve.

[0037] Reference Figure 1 and Figure 2To hang the dustproof net 300 between the two support poles 210, hanging rings 503 for connecting to the dustproof net 300 can be respectively provided on the side wall of the sub-pole 211 near both ends. Hooks 301 can be provided on the dustproof net 300 at the positions corresponding to the hanging rings 503. Since each sub-pole 211 has a hanging ring 503 on its side wall, the dustproof net 300 can be selectively hung at any height on the support pole 210, for example, it can be hung near the upper side of the support pole 210, so that space can be left below the dustproof water curtain for personnel to pass through.

[0038] This disclosure does not limit the specific structure of the spray unit 400; see reference to Figure 1 and Figure 5 In the embodiments disclosed herein, the spray unit 400 may include: a spray pipe 410, which is closed at both ends and detachably mounted at the top of a corresponding support rod 210; the pipe wall of the spray pipe 410 may be provided with a water inlet 411; a plurality of nozzles 420, which may be distributed sequentially along the length of the spray pipe 410; and a water supply assembly connected to the water inlet 411. In use, the water supply assembly supplies water to the spray pipe 410 through the water inlet 411 and sprays the water onto the dust screen 300 through the plurality of nozzles 420 to form a water curtain. The two ends of the spray pipe 410 may be bent downward for insertion into the top of the support rod 210, for example, into the recessed structure 502 of the sub-rod 211. In addition, in some other embodiments, the spray pipe 410 may also be installed on the top wall or side wall of the tunnel. The nozzle can be set at an angle of 30°-45° towards the wind direction. The specific angle can be adjusted according to the wind direction so that the water sprayed by the nozzle 420 can fall onto the dust screen 300.

[0039] This disclosure does not limit the nozzle 420; for example, it can be a shower head. Alternatively, it can have an atomizing function to spray water evenly and as much as possible onto the dust screen 300 to form a water curtain and avoid wasting spray water.

[0040] Reference Figure 3 In embodiments of this disclosure, the base 100 can be configured as a water storage tank 101 with a recessed upper surface. The water supply assembly can include a pump body 431 disposed within the water storage tank 101 and a pipe 432 connecting the pump body 431 and the water inlet 411. With this design, water on the dust screen 300 can flow into the lower water storage tank 101 under gravity, and the pump body 431 can further pump the water in the water storage tank 101 to the spray pipe 410 for spraying again, thereby reusing the spray water. Furthermore, the water storage tank 101 at the bottom can prevent the spray water from flowing into the tunnel.

[0041] Furthermore, referring to Figure 4In embodiments of this disclosure, the base 100 may further include a support cover 102 detachably attached to the opening of the water storage tank 101, allowing personnel to step on the support cover 102 as they pass through the dustproof water curtain. The support cover 102 may be configured as a perforated structure with multiple return water holes 103, so that the spray water flowing down from the dustproof net 300 can flow back to the water storage tank 101.

[0042] Reference Figure 3 In the embodiments of this disclosure, a liquid level sensor 104 may be installed inside the water storage tank 101. The liquid level sensor 104 is used to control the pump body 431 to start when the water level in the water storage tank 101 is detected to be higher than a first preset position, and to control the pump body 431 to shut down when the water level in the water storage tank 101 is detected to be lower than a second preset position. This design allows for the automatic operation of the dust-proof water curtain by controlling the start and stop of the pump body 431 through the liquid level sensor 104. This disclosure does not limit the first and second preset positions; they can be designed adaptably according to actual spraying needs and the water storage space of the water storage tank 101. It should be explained that in the embodiments of this disclosure, the liquid level sensor 104 can control the start and stop of the pump body 431 through the controller 600 mentioned below.

[0043] Furthermore, referring to Figure 1 In the embodiments of this disclosure, a three-way valve can be connected between the pipe 432 and the inlet 411. The dustproof water curtain can also include a controller 600 for connecting to the pump body 431, the level sensor 104, and the three-way valve (not shown in the figure), respectively. The outlet of the three-way valve is connected to the inlet 411 of the spray pipe 410. The first inlet of the three-way valve is connected to the pump body 431 via the pipe 432, and the second inlet can be used to connect to a water source. With this design, during the initial operation of the dustproof water curtain or during operation, if the level sensor 104 detects insufficient or no water in the water tank 101, the controller 600 can shut off the first inlet and the pump body 431, and open the second inlet, thereby allowing water to be supplied to the spray pipe 410. When the level sensor 104 detects that the spray water in the water storage tank 101 has reached the preset condition, the controller 600 can control the three-way valve to shut off the second water inlet and open the first water inlet and start the pump body 431, so that the water storage tank 101 and the pump body 431 supply water to the spray pipe 410. This disclosure does not limit the preset conditions such as "start / stop", "shutdown", and "opening", and can be adapted to specific circumstances.

[0044] Reference Figure 3In the embodiments of this disclosure, the dustproof water curtain may further include a protective net 700 disposed within the water storage tank 101. The protective net 700 forms a protective space 701 for placing the pump body 431, and the two ends of the protective net 700 in the height direction can respectively abut against the bottom wall of the water storage tank 101 and the bottom surface of the support cover 102. The protective space 701 avoids the return water hole 103. Specifically, a shielding plate may be provided at the corresponding position of the protective space 701, or the return water hole 103 may not be provided at the corresponding position of the protective space 701. The protective net 700 can form the protective space 701 by itself, or it can form the protective space 701 together with the side wall of the water storage tank 101. By setting the protective net 700, the spray water returning to the water storage tank 101 can be filtered, preventing impurities from entering the pump body 431 and causing damage to the pump body 431. Alternatively, to prevent the pump body 431 from pumping spray water containing coal dust to the spray pipe 410, which could clog the nozzle 420 or affect the dustproof effect of the dustproof water curtain.

[0045] In embodiments of this disclosure, the dust-proof water curtain may further include a switch (not shown) disposed on the base 100 for controlling the spray section 400. This design allows the spray section 400 to be shut off by controlling the switch when personnel need to pass through the dust-proof water curtain near its lower side, preventing them from being sprayed. This switch may specifically control a three-way valve or a pump body 431; this disclosure does not limit this.

[0046] In some embodiments, in order to improve the effect of the dustproof water curtain, there are multiple support parts 200, which are arranged sequentially along the front and rear direction of the base 100. A dustproof net 300 can be provided between the two support rods 210 of each support part 200, so as to form a multi-layer water curtain to improve the dustproof effect.

[0047] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0049] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A dust-proof water curtain for coal mine tunnels, characterized in that: include: Base; A support portion, comprising two support rods detachably mounted on the upper surface of the base and extending in the height direction, wherein the two support rods are respectively mounted at positions close to both ends of the base in the left-right direction; A dustproof net is hung between the two support rods; and A spraying part, used for spraying water toward the dustproof net, Wherein, the lengths of the two support rods are adjustable.

2. The dustproof water curtain according to claim 1, characterized in that: The support rod comprises a plurality of sub-rods which are detachably connected end to end in sequence along the length direction, and the plurality of sub-rods have the same structure.

3. The dustproof water curtain according to claim 2, characterized in that: One end of the sub-rod is provided with a protruding structure, and the other end is provided with a concave structure adapted to the protruding structure.

4. The dustproof water curtain according to claim 2, characterized in that: The side walls of the sub-rods are respectively provided with hanging rings for connecting with the dustproof net at positions close to both ends, and the dustproof net is provided with hooks at positions corresponding to the hanging rings.

5. The dustproof water curtain according to claim 1, characterized in that: The spraying part comprises: A spray pipe, the two ends of which are closed and detachably mounted on the top ends of corresponding support rods, and the wall of the spray pipe is provided with a water inlet; A plurality of spray heads are sequentially distributed along the length direction of the spray pipe; and A water supply component is connected to the water inlet.

6. The dustproof water curtain according to claim 5, characterized in that: The base is constructed as a water storage tank with a concave upper surface, and the water supply assembly includes a pump body arranged in the water storage tank and a pipeline connected between the pump body and the water inlet.

7. The dustproof water curtain according to claim 6, characterized in that: The base also includes a bearing cover detachably overlapped at the opening of the water storage tank, and the bearing cover is configured as a hollow structure with a plurality of water return holes.

8. The dustproof water curtain according to claim 7, characterized in that: A liquid level sensor is arranged in the water tank, and the liquid level sensor is used to control the pump body to start when it detects that the water level in the water tank is higher than a first preset position, and to control the pump body to stop when it detects that the water level in the water tank is lower than a second preset position.

9. The dustproof water curtain according to claim 8, characterized in that: A three-way valve is connected between the pipeline and the water inlet, and the dust-proof water curtain also includes a controller for being respectively connected to the pump body, the liquid level sensor and the three-way valve.

10. The dustproof water curtain according to claim 7, characterized in that: It also includes a protective net arranged in the water tank, the protective net is used to form a protective space for placing the pump body, and the two ends of the protective net in the height direction respectively abut against the bottom wall of the water tank and the bottom surface of the bearing cover, Wherein, the protection space avoids the water return hole.

11. The dustproof water curtain according to claim 1, characterized in that: It also includes a switch arranged on the base for controlling the spraying part.

12. The dustproof water curtain according to claim 1, characterized in that: There are multiple supporting parts, which are arranged in sequence along the front-to-back direction of the base, and a dustproof net is arranged between two supporting rods of each supporting part.

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