Dust falling equipment for coal mine construction

Abstract

The utility model belongs to the technical field of dust falling equipment, and relates to dust falling equipment for coal mine construction, which comprises a plurality of three-way joints, a plurality of spray heads, a plurality of bases and a plurality of hose pup joints, a middle connector of each three-way connector is an internal thread connector, and other connectors of each three-way connector are external thread connectors. The nozzle is in threaded connection with an internal thread interface of the three-way joint; each base is provided with a clamp used for clamping and fixing a three-way connector, and the bases can be anchored on the inner wall of a roadway through expansion bolts. And internal thread movable joints which are in threaded connection with the external thread interfaces of the three-way joints are integrally formed at the two ends of each hose pup joint. The dust falling equipment can be installed in a coal mine tunnel to form a full-section water curtain for spraying and dust falling, the long-short mode is changed into the short mode, the complex mode is changed into the simple mode, a single hose pup joint can be conveniently arranged in a penetrating mode in the installation process, and the three-way connector is fixedly installed on the inner wall of the tunnel through a combined structure of the base, the clamp and the expansion bolt. And the installation firmness of the three-way joint and the roadway section water curtain spraying dust-settling mechanism can be ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of dust suppression equipment, and in particular relates to a dust suppression equipment for coal mine construction. Background Technology

[0002] Among the safety hazards in coal mine construction, dust is the most difficult to control and poses a relatively high risk. If dust in the air is not properly managed during underground construction, it can not only harm the workers' health but also cause dust explosions when it accumulates to a certain level. Installing spray dust suppression equipment in coal mine roadways is a common method for controlling dust in these roadways. Multiple nozzles are installed on the roadway cross-section, spraying water mist to form a water curtain that covers the roadway surface. While coal mine roadway spray dust suppression equipment proposed in patents such as CN219826910U and CN220955689U can form a full-section water curtain in coal mine roadways to achieve dust suppression, it is out of touch with the actual installation conditions of coal mine roadways. Coal mine roadways are often equipped with support equipment, tracks, overhead rails, conveyors, ventilation ducts, cables and other equipment. The installation of complex spray dust suppression equipment in coal mine roadways is limited. The simplest and purest roadway cross-section spray dust suppression equipment is a water supply hose and multiple nozzles arranged on it.

[0003] When installing existing water supply hoses with multiple nozzles in coal mine roadways, there are situations where they need to pass through gaps between the support equipment, overhead rails, ventilation ducts, or cables and the roadway wall. This makes it inconvenient to install the water supply hoses with nozzles. In addition, there are problems with the water supply hoses not being securely installed on the roadway wall. Utility Model Content

[0004] The purpose of this utility model is to provide a dust suppression device for coal mine construction, which is easy to install in coal mine roadways, in order to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution:

[0006] A dust suppression device for coal mine construction, comprising:

[0007] The three-way connector is provided in multiple ways. The middle interface of each three-way connector is an internal thread interface, and the interfaces at its left and right ends are external thread interfaces.

[0008] The nozzle is provided in multiple parts, and each nozzle corresponds to a different tee connector. The nozzle is connected to the internal thread of the tee connector. The nozzle is used to spray water mist to suppress dust.

[0009] The base is provided in multiple ways, and each base is provided with a clamp for clamping and fixing the tee connector;

[0010] Expansion bolts, wherein multiple expansion bolts are provided, and the expansion bolts are used to anchor the base to the inner wall of the tunnel;

[0011] The hose short connector is provided in multiple parts. Each hose short connector has an integrally formed internal threaded union at both ends for connecting with the external threaded interface of the tee connector. The internal threaded union is a quick-release connector. When installing or removing it from the external threaded interface, it can rotate relative to the hose short connector without turning the hose short connector, which facilitates the installation and removal of the hose short connector.

[0012] Furthermore, the base includes a cap-shaped plate and a base plate. The cap-shaped plate is anchored to the inner wall of the tunnel by expansion bolts. The base plate and the cap-shaped plate are detachably connected by a bolt and nut assembly. When disassembling the dust suppression device in the tunnel, the bolt and nut assembly between the detachable cap-shaped plate and the base plate can be used to separate the base plate. The base plate can be reused. However, the expansion bolts are difficult to disassemble, leaving the cap-shaped plate with the expansion bolts on the inner wall of the tunnel.

[0013] Furthermore, the clamp includes two U-shaped clamps disposed on the bottom surfaces of the left and right ends of the substrate, with the openings of the U-shaped clamps facing downwards. The inner walls of the front and rear sides of each U-shaped clamp are stamped with arc-shaped grooves for limiting and clamping one end of the tee connector. A bolt and nut assembly for adjusting the opening width of the U-shaped clamp to clamp and fix the tee connector is inserted through the bottom opening of the U-shaped clamp in the front-rear direction. The U-shaped clamp is made of stainless steel plate, has a certain toughness, and its opening width can be expanded and reduced.

[0014] Furthermore, bolt slots are provided at both ends of the cap-shaped plate and the left and right ends of the base plate, and the bolt slots are aligned vertically. Each U-shaped clamp is provided with a bolt insertion hole at the top. The U-shaped clamp, the base plate and the cap-shaped plate are detachably connected by a bolt and nut assembly. After loosening the nut, the bolt can be slid outward from the bolt slot at the end of the cap-shaped plate and the base plate, which can quickly and synchronously separate the base plate, the U-shaped clamp and the cap-shaped plate.

[0015] Furthermore, a U-shaped limiting plate with an opening facing downwards is fixedly installed (welded or integrally formed) on the bottom surface of the middle part of the substrate. The middle part of the tee connector can be inserted into the U-shaped limiting plate. The front and rear side walls of the bottom of the U-shaped limiting plate are threaded with screws extending in the front-rear direction. The two screws are used to adjust the tilt angle of the internal thread interface in the middle of the tee connector, thereby adjusting the orientation of the nozzle.

[0016] Furthermore, the dust suppression device also includes several hooks. The upper part of the hook has an upper hook for hooking onto the netting on the inner wall of the tunnel, and the lower part of the hook has a lower hook for hooking onto the hose short connector. The hooks can help suspend the hose short connector and improve the reliability of the hose short connector.

[0017] Furthermore, the dust suppression equipment also includes valves and internal thread plugs; the valves are installed on the bypass pipe of the high-pressure water supply pipe in the tunnel, and in a series pipeline composed of multiple tee joints and multiple hoses, the valves are connected to the tee joints at one end of the series pipeline through hoses, and the internal thread plugs are installed on an external thread interface of the tee joints at the other end of the series pipeline to block the water outlet; workers can control whether each nozzle sprays water through the valves.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This dust suppression equipment can be installed in coal mine roadways to form a full-section water curtain for spray dust suppression. The number and spacing of T-joints and nozzles can be designed according to the cross-sectional dimensions of the coal mine roadway. Multiple bases are first anchored to the inner wall of the roadway using multiple expansion bolts. Then, clamps are used to fix the T-joints to the bases. A nozzle is installed on each T-joint. Adjacent T-joints are connected by a hose. In this way, multiple T-joints, multiple nozzles, and multiple hoses are connected to form a water curtain spray dust suppression mechanism for the roadway cross-section. This dust suppression equipment simplifies the process and reduces length. During installation, it is convenient to insert a single hose through the gap between the support equipment, hanging rails, ventilation ducts or cables and the inner wall of the roadway. The combination structure of bases, clamps and expansion bolts fixes the T-joints to the inner wall of the roadway, ensuring the reliability of the installation of the T-joints and the water curtain spray dust suppression mechanism for the roadway cross-section. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the substrate, clamp, and tee connector in this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the hose short connector and hook in this utility model.

[0024] Figure 4 This is a schematic diagram of the installation structure of this utility model.

[0025] The components in the diagram are named as follows: 1. T-joint; 2. Nozzle; 3. Base; 3.1. Cap plate; 3.2. Base plate; 3.3. Bolt slot; 4. Clamp; 4.1. U-shaped clamp; 5. Hose connector; 6. High-pressure water supply pipe; 7. Valve; 8. Threaded union; 9. Expansion bolt; 10. Hook; 11. Bolt and nut assembly; 12. U-shaped limiting plate; 13. Threaded plug; 14. Screw. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "front", "back", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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] A dust suppression device for coal mine construction, such as Figure 1 As shown, it mainly consists of multiple tee connectors 1, multiple nozzles 2, multiple bases 3, multiple expansion bolts 9, multiple hose short connectors 5, several hooks 10, valves 7, and internal thread plugs 13.

[0029] like Figure 1 and Figure 2 As shown, the middle interface of each of the three-way connectors 1 is an internal thread interface, and the interfaces at both ends of the connector are external thread interfaces.

[0030] Multiple nozzles 2 correspond one-to-one with multiple tee connectors 1, and the nozzles 2 are connected to the internal thread interface of the tee connectors 1. The nozzles 2 are used to spray water mist to suppress dust.

[0031] like Figure 1 and Figure 2 As shown, the multiple bases 3 correspond one-to-one with the multiple tee joints 1, and the expansion bolts 9 are used to anchor the bases 3 to the inner wall of the tunnel.

[0032] The base 3 includes a cap-shaped plate 3.1 and a base plate 3.2. Specifically, the cap-shaped plate 3.1 is formed by stamping or integral casting of stainless steel plate, and its middle part is arched upward in a U-shape to form a space to accommodate the bolt head of the expansion bolt 9. The base plate 3.2 is made of stainless steel plate. The cap-shaped plate 3.1 is anchored to the inner wall of the tunnel by the expansion bolt 9. The base plate 3.2 and the cap-shaped plate 3.1 are detachably connected by a bolt and nut assembly 11. When disassembling the dust suppression equipment in the tunnel, the bolt and nut assembly 11 between the cap-shaped plate 3.1 and the base plate 3.2 can be disassembled to separate the base plate 3.2. The base plate 3.2 can be reused, while the expansion bolt 9 is more difficult to disassemble. The cap-shaped plate 3.1 is left on the inner wall of the tunnel along with the expansion bolt 9.

[0033] like Figure 1 and Figure 2 As shown, each of the bases 3 is provided with a clamp 4 for clamping and fixing the tee connector 1;

[0034] The clamp 4 includes two U-shaped clamps 4.1 disposed on the bottom surfaces of the left and right ends of the base plate 3.2, with the openings of the U-shaped clamps 4.1 facing downwards. The inner walls of the front and rear sides of each U-shaped clamp 4.1 are stamped with arc-shaped grooves for limiting and clamping one end of the tee connector 1. A bolt and nut assembly 11 for adjusting the opening width of the U-shaped clamp 4.1 to clamp and fix the tee connector 1 is inserted through the bottom opening of the U-shaped clamp 4.1 in the front-back direction. The U-shaped clamp 4.1 is made of stainless steel plate and has a certain toughness. Its opening width can be expanded and reduced.

[0035] Bolt slots 3.3 are provided at both ends of the cap-shaped plate 3.1 and the left and right ends of the base plate 3.2, and the bolt slots 3.3 are vertically aligned. Each U-shaped clamp 4.1 has a bolt insertion hole at its top. The U-shaped clamp 4.1, the base plate 3.2, and the cap-shaped plate 3.1 are detachably connected by a bolt and nut assembly 11. Specifically, the bolts of the bolt and nut assembly 11 are inserted into the U-shaped clamp 4.1, and the upper part of the bolt is inserted into the bolt slots 3.3 at the ends of the cap-shaped plate 3.1 and the base plate 3.2. The bolt head and the nut are used to lock the bolts. After loosening the nut, the bolt is slid outward from the bolt slots 3.3 at the ends of the cap-shaped plate 3.1 and the base plate 3.2, which allows for quick and synchronous separation of the base plate 3.2, the U-shaped clamp 4.1, and the cap-shaped plate 3.1.

[0036] like Figure 1 and Figure 2As shown, a U-shaped limiting plate 12 with its opening facing downwards is welded to the bottom center of the substrate 3.2. The center of the tee connector 1 can be inserted into the U-shaped limiting plate 12. The front and rear side walls of the bottom of the U-shaped limiting plate 12 are threaded with screws 14 extending in the front-rear direction. The two screws 14 are used to adjust the tilt angle of the internal thread interface in the center of the tee connector 1, thereby adjusting the orientation of the nozzle 2. Specifically, the two screws 14 can be used to press against the internal thread interface in the center of the tee connector 1 from the front-rear direction and control its tilt angle. In addition, the two screws 14 can be used to press against the tee connector 1 to prevent the angle of the tee connector 1 and the nozzle 2 from shifting due to vibration during the mining process, ensuring the stability of the full-section water curtain formed by each nozzle 2 in the roadway.

[0037] like Figure 1 and Figure 3 As shown, each of the hose short connectors 5 has an integrally formed internal threaded connector 8 at both ends for connecting with the external threaded interface of the tee connector 1. The internal threaded connector 8 is a quick-release connector. When installing or removing it from the external threaded interface, it can rotate relative to the hose short connector 5 without turning the hose short connector 5, which facilitates the installation and removal of the hose short connector 5. Specifically, the structure of the hose short connector 5 and the internal threaded connector 8 integrally formed at its ends is similar to the structure of the water inlet and outlet hoses of the water heater and the quick-release connectors on them.

[0038] like Figure 1 and Figure 3 As shown, the hook 10 is used to suspend the hose short connector 5. The upper part of the hook 10 has an upper hook portion for hooking onto the mesh on the inner wall of the roadway, and the lower part of the hook 10 has a lower hook portion for hooking onto the hose short connector 5. The hook 10 can assist in suspending the hose short connector 5 and improve the reliability of the hose short connector 5. It should be noted that the mesh on the inner wall of the roadway is a common roadway support structure. It is used to prevent coal dust, rocks and other objects from falling into the roadway, protect the safety of miners, and strengthen the roadway structure.

[0039] like Figure 1 As shown, the valve 7 is installed on the bypass pipe of the high-pressure water supply pipe 6 in the tunnel. In the series pipeline composed of multiple tee joints 1 and multiple hose short-circuit 5, the valve 7 is connected to the tee joint 1 at one end of the series pipeline through the hose short-circuit 5. The internal thread plug 13 is installed on an external thread interface of the tee joint 1 at the other end of the series pipeline to block the water outlet. Workers can control whether each nozzle 2 sprays water through the valve 7.

[0040] The working principle and technical effect of the dust suppression equipment in this embodiment are as follows:

[0041] This dust suppression equipment can be installed in coal mine roadways to form a full-section water curtain for spray dust suppression, such as... Figure 1 and Figure 4As shown, the number and spacing of T-joints 1 and nozzles 2 are designed according to the cross-sectional dimensions of the coal mine roadway. Based on the nozzle spacing design, the cap plates 3.1 of multiple bases 3 are anchored to the inner wall of the roadway using multiple expansion bolts 9. A base plate 3.2 and two U-shaped clamps 4.1 are installed on each cap plate 3.1. Each T-joint 1 is installed on the base 3 using a clamp 4. A nozzle 2 is installed on each T-joint 1. Adjacent T-joints 1 are connected by hose short connectors 5. The system is constructed using multiple T-joints 1, multiple nozzles 2, and multiple hose short connectors 5. The tunnel cross-section water curtain spray dust suppression mechanism has an internal thread plug 13 installed on the external thread interface of the leftmost tee connector 1 for sealing. The rightmost tee connector 1 is connected to the valve 7 through a hose short connector 5 to realize high-pressure water supply for the tunnel cross-section water curtain spray dust suppression mechanism. The orientation of the nozzle 2 in the front-back direction can be adjusted by turning two screws 14. After the orientation of the nozzle 2 is adjusted, the bolt and nut assembly 11 at the bottom of each U-shaped clamp 4.1 is tightened to clamp and fix the tee connector 1. Workers can control whether each nozzle 2 sprays water by opening and closing the valve 7.

[0042] This dust suppression equipment simplifies complex processes and streamlines the overall design. It consists of an assembly structure comprising multiple T-joints 1, multiple nozzles 2, multiple bases 3, multiple expansion bolts 9, multiple hose short connectors 5, several hooks 10, valves 7, and internal thread plugs 13. During installation, it is integrated with support equipment, rails, ventilation ducts, or cables, etc. Figure 4 It is convenient to insert a single flexible hose short connector 5 through the gap between the equipment (not shown) and the inner wall of the tunnel. The three-way connector 1 is fixedly installed on the inner wall of the tunnel by using the combination structure of the base 3, clamp 4 and expansion bolt 9, which can ensure the reliable installation of the three-way connector 1 and the water curtain spray dust suppression mechanism of the tunnel cross section.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A dust falling device for coal mine construction, characterized by, Include: Three-way connector (1), the three-way connector (1) is provided with a plurality of, the middle interface of each three-way connector (1) is internal thread interface, the interface of left and right ends is external thread interface; Spray head (2), the spray head (2) is provided with a plurality of, a plurality of spray heads (2) correspond to a plurality of three-way connectors (1), and the spray head (2) is threadedly connected with the internal thread interface of the three-way connector (1); Base (3), the base (3) is provided with a plurality of, each base (3) is provided with a clamp (4) for clamping and fixing the three-way connector (1); Expansion bolt (9), the expansion bolt (9) is provided with a plurality of, and the expansion bolt (9) is used for anchoring the base (3) on the inner wall of the roadway; Soft pipe short connection (5), the soft pipe short connection (5) is provided with a plurality of, and the two ends of each soft pipe short connection (5) are integrally formed with internal thread adapter (8) for threadedly connecting with the external thread interface of the three-way connector (1).

2. The dust falling device for coal mine construction according to claim 1, characterized in that: The base (3) includes a cap plate (3.1) and a base plate (3.2), the cap plate (3.1) is anchored on the inner wall of the roadway by the expansion bolt (9), and the base plate (3.2) is detachably connected with the cap plate (3.1) by a bolt and nut assembly (11).

3. The dust falling device for coal mine construction according to claim 2, characterized in that: The clamp (4) includes two U-shaped clamping plates (4.1) arranged on the bottom surfaces of the left and right ends of the base plate (3.2), and the openings of the U-shaped clamping plates (4.1) face downward, the front inner wall and the rear inner wall of each U-shaped clamping plate (4.1) are stamped to form an arc-shaped groove for limiting and clamping one end of the three-way connector (1), and a bolt and nut assembly (11) is arranged in the opening of the bottom of the U-shaped clamping plate (4.1) in the front-rear direction, which is used for adjusting the opening width of the U-shaped clamping plate (4.1) so that the three-way connector (1) can be clamped and fixed.

4. The dust falling device for coal mine construction according to claim 3, characterized in that: The left and right ends of the cap plate (3.1) and the left and right ends of the base plate (3.2) are provided with bolt clamping grooves (3.3), the top of each U-shaped clamping plate (4.1) is provided with a bolt insertion hole, and the U-shaped clamping plate (4.1), the base plate (3.2) and the cap plate (3.1) are detachably connected by the bolt and nut assembly (11).

5. The dust falling device for coal mine construction according to claim 2, characterized in that: The middle bottom surface of the base plate (3.2) is fixedly provided with a U-shaped limiting plate (12) with an opening facing downward, the front side wall and the rear side wall of the bottom of the U-shaped limiting plate (12) are threadedly connected with screws (14) extending in the front-rear direction, and the two screws (14) are used for adjusting the inclination angle of the middle internal thread interface of the three-way connector (1).

6. The dust falling device for coal mine construction according to claim 1, characterized in that: The dust falling device further comprises a plurality of hooks (10), the upper part of the hook (10) is formed with an upper hooking part for hooking on the net hanging on the inner wall of the roadway, and the lower part of the hook (10) is formed with a lower hooking part for hooking the soft pipe short connection (5).

7. The dust falling device for coal mine construction according to claim 1, characterized in that: The dust falling device further comprises a valve (7) and an internal thread plug (13); the valve (7) is installed on the bypass pipe of the high-pressure water supply pipe (6) in the roadway, and in the series pipeline formed by the plurality of three-way connectors (1) and the plurality of soft pipe short connections (5), the valve (7) is connected between the three-way connector (1) at one end of the series pipeline and the soft pipe short connection (5) through the soft pipe short connection (5), and the internal thread plug (13) is installed on one external thread interface of the three-way connector (1) at the other end of the series pipeline for plugging the water outlet.

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