Dust suppression spray device for coal mines

Abstract

The utility model discloses a dust suppression spray device for coal mines, comprising: a fixed frame, having at least two fixed points for fixing an external foundation; an air expansion cone, having an air inlet for connecting an external air source and an air outlet for expanding the diameter, the air expansion cone is fixed to the fixed frame, and has at least a first posture and a second posture that can make the air outlet have different elevation angles; a spray assembly, fixed to the air expansion cone and evenly distributed inside the edge of the air outlet in a ring shape, for spraying in a direction away from the air outlet. In this solution, the flowable area of ​​the air flow blown into the air inlet is increased by the air expansion cone, and the speed of the water mist blown out of the spray assembly driven by the air flow is increased, so that the water mist can float to a farther position, increasing the range of action of the water mist, and can adapt to different working conditions by maintaining the air expansion cone in the first posture or the second posture.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine dust reduction, in particular to a coal mine dust reduction spray device. Background Art

[0002] A large amount of dust is generated during the coal mining process. Dust pollution poses a threat to the environment and human health and brings huge hidden dangers to mine safety production. It is very important to find an effective dust reduction method. Utility Model Content

[0003] In view of this, the utility model provides a dust suppression spray device for coal mines, which can increase the flowable area of ​​the air flow blown in by the air inlet through the air expansion cone, increase the speed of the water mist blown out of the spray assembly driven by the air flow, make the water mist float to a farther position, increase the effective range of the water mist, and can adapt to different working conditions by maintaining the air expansion cone in the first posture or the second posture.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A dust suppression spray device for coal mines, comprising:

[0006] a fixing frame having at least two fixing points for fixing to an external foundation;

[0007] An air expansion cone, having an air inlet for connecting to an external air source and an air outlet for expanding the diameter, the air expansion cone being fixed to the fixing frame and having at least a first posture and a second posture capable of making the air outlet have different elevation angles;

[0008] The spray assembly is fixed to the air expansion cone and evenly distributed in a ring shape inside the edge of the air outlet, and is used for spraying in a direction away from the air outlet.

[0009] Preferably, a locking assembly for maintaining the first posture and / or the second posture is fixed on the fixing frame, the air expansion cone is hinged to the fixing frame, and the locking assembly includes a positioning pin for passing through the fixing frame and extending at least into the air expansion cone, and a positioning cover threadedly connected to the fixing frame and covering the positioning pin.

[0010] Preferably, a positioning hole for accommodating the positioning pin is provided on the outer wall of the air expansion cone, and a plurality of adjustment holes for aligning the positioning hole at different air outlet elevation angles and accommodating the positioning pin are provided on the fixing frame, and the opening of the adjustment hole has a guide countersunk hole.

[0011] Preferably, it further comprises a balance rod spaced apart from the fixing frame and used for supporting the air diffusion cone, wherein the balance rod has a first length adapted to the first posture and has a second length adapted to the second posture.

[0012] Preferably, the top end of the balance rod is hinged to the air diffusion cone, and the bottom end of the balance rod can be fixed to the fixing frame.

[0013] Preferably, the fixing frame has a slot for accommodating and abutting against the balance pole.

[0014] Preferably, the spray assembly comprises a nozzle, an annular frame for carrying the nozzle, and a connecting rod for fixing the annular frame to the edge of the air diffusion cone.

[0015] Preferably, a connection joint for threaded connection with an air inlet pipe and communicating with the air inlet is clamped on the air expansion cone, and the connection joint can rotate around the axis of the air expansion cone.

[0016] It can be seen from the above technical solution that the dust suppression spray device for coal mines provided by the utility model increases the flowable area of ​​the airflow blown in by the air inlet through the air expansion cone, increases the speed of the water mist blown out of the spray assembly driven by the airflow, enables the water mist to float to a farther position, increases the range of action of the water mist, and can adapt to different working conditions by maintaining the air expansion cone in the first posture or the second posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic diagram showing the structure of a dust suppression spray device for a coal mine according to an exemplary embodiment;

[0019] Figure 2 is a schematic diagram showing the position of a connection joint according to an exemplary embodiment;

[0020] Figure 3 is a schematic diagram showing a connection joint structure according to an exemplary embodiment;

[0021] Figure 4 According to an exemplary embodiment, Figure 1 The middle is an enlarged view of part A showing the structure of the tightening assembly;

[0022] Figure 5 According to an exemplary embodiment, Figure 2 The middle is an enlarged view of part B showing the location of the positioning hole.

[0023] Reference numerals:

[0024] 1. Air expansion cone; 11. Air inlet; 12. Air outlet; 13. Fixing point; 14. Slot; 15. Fixing bracket; 16. Connecting tube; 161. Guide countersunk hole; 17. Adjustment hole; 18. Positioning hole; 2. Spray assembly; 21. Nozzle; 22. Connecting rod; 23. Ring frame; 3. Balance rod; 31. Push rod; 32. Positioning bolt; 33. Sleeve rod; 34. Balance plate; 4. Axle; 5. Locking assembly; 51. Positioning cover; 52. Positioning pin; 6. Connecting section; 61. Threaded equal diameter section; 62. Locking ring; 63. Expanded diameter section. DETAILED DESCRIPTION

[0025] The utility model discloses a dust suppression spray device for coal mines, which can increase the flowable area of ​​the air flow blown into the air inlet through an air expansion cone, increase the speed of the water mist blown out of the spray component driven by the air flow, enable the water mist to float to a farther position, increase the effective range of the water mist, and can adapt to different working conditions by maintaining the air expansion cone in a first posture or a second posture.

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In an exemplary embodiment of the present disclosure, a dust suppression spray device for coal mines is provided, such as Figure 1 As shown, Figure 1 is a schematic diagram showing the structure of a dust suppression spray device for a coal mine according to an exemplary embodiment; Figure 2 is a schematic diagram showing the position of a connection joint according to an exemplary embodiment; Figure 3 is a schematic diagram showing a connection joint structure according to an exemplary embodiment; Figure 4 According to an exemplary embodiment, Figure 1 The middle is an enlarged view of part A showing the structure of the tightening assembly; Figure 5 According to an exemplary embodiment, Figure 2 The middle is an enlarged view of part B showing the location of the positioning hole. Figures 1 to 5 Provide explanation.

[0028] Some specific implementation modes described below are intended to facilitate those skilled in the art to understand the present embodiment, and the present embodiment is not limited to some specific implementation modes described below.

[0029] Reference Figure 1 and Figure 2 An exemplary embodiment of the present disclosure provides a dust suppression spray device for a coal mine, and the dust suppression spray device for a coal mine includes:

[0030] A fixing frame 15 having at least two fixing points 13 for fixing to an external foundation;

[0031] The air expansion cone 1 has an air inlet 11 for connecting to an external air source and an air outlet 12 for expanding the diameter. The air expansion cone 1 is fixed to a fixing frame 15 and has at least a first posture and a second posture that enable the air outlet 12 to have different elevation angles.

[0032] The spray assembly 2 is fixed to the air expansion cone 1 and evenly distributed in a ring shape inside the edge of the air outlet 12 , and is used for spraying in a direction away from the air outlet 12 .

[0033] For example, refer to Figure 1 and Figure 2 The fixed frame 15 is an upright U-shaped frame structure, the fixed point 13 is located on the horizontal part of the fixed frame 15, the fixed point 13 includes a bolt installation reserved hole opened on the fixed frame 15, the air expansion cone 1 is horizontally placed and the physical structure part at the air outlet 12 is located inside the U-shaped opening of the fixed frame 15. The dust suppression spray device for coal mines also includes a balance rod 3 spaced apart from the fixed frame 15 and used to support the air expansion cone 1, the balance rod 3 has a first length adapted to the first posture, and has a second length adapted to the second posture. The balance rod 3 includes a top rod 31 hinged to the physical structure of the air expansion cone 1 at the air inlet 11, a sleeve rod 33 sleeved on the bottom end of the top rod 31 and capable of sliding relative to the top rod 31, and a positioning bolt 32 threadedly connected to the sleeve rod 33 and laterally penetrating the sleeve rod 33. The top rod 31 and the sleeve rod 33 are coaxially arranged. By loosening the positioning bolt 32 and then pulling the top rod 31 or the sleeve rod 33, the overall length of the balance rod 3 can be changed, and by tightening the positioning bolt 32, it is made to abut against the outer wall of the top rod 31 inside the sleeve rod 33 to achieve the purpose of fixing the length of the balance rod 3.

[0034] The spray assembly 2 includes a nozzle 21, an annular frame 23 for carrying the nozzle 21, and a connecting rod 22 for fixing the annular frame 23 to the edge of the air expansion cone 1. There are four connecting rods 22 and they are arranged along the radial direction of the air outlet 12 of the air expansion cone 1. The four connecting rods 22 are evenly distributed along the circumference. One end of the connecting rod 22 is fixedly connected to the solid structure at the air outlet 12 of the air expansion cone 1, and the other end of the connecting rod 22 is fixedly connected to the outer wall of the annular frame 23. The four connecting rods 22 jointly fix the annular frame 23. The annular frame 23 is coaxially arranged with the air outlet 12 of the air expansion cone 1. The annular area surrounded by the annular frame 23 is hollow. A gap is formed between the annular frame 23 and the edge of the air expansion cone 1 for air flow and water mist to pass through. There are eight nozzles 21 and they are evenly distributed along the circumference on the side of the annular frame 23 away from the air outlet 12. The direction of the nozzle 21 is parallel to the extension direction of the axis of the air expansion cone 1. In order to supply water to the nozzle 21, the connecting rod 22 and the annular frame 23 can be hollow and connected to the nozzle 21. A connecting rod 22 is selected to penetrate the outer wall of the air expansion cone 1 along the radial direction of the air outlet 12 and serve as a water inlet section connected to an external water source. After the external water source passes through the connecting rod 22 and the annular frame 23, it is atomized and sprayed out through the nozzle 21 in a direction away from the air outlet 12.

[0035] Reference Figure 1 and Figure 3 A connecting section 6 for threaded connection with the air inlet pipe and communicating with the air inlet 11 is clamped on the air expansion cone 1 , and the connecting section 6 can rotate around the axis of the air expansion cone 1 . The connecting joint 6 includes a threaded equal-diameter section 61 coaxially arranged with the air expansion cone 1, an expanded-diameter section 63 coaxially arranged with the air expansion cone 1 and coaxially fixedly connected with the threaded equal-diameter section 61, and a locking ring 62 threadedly connected with the threaded equal-diameter section 61. The threaded equal-diameter section 61 is a tubular structure, and one end of the threaded equal-diameter section 61 extends from the interior of the air expansion cone 1 along the air inlet 11, and the expanded-diameter section 63 is located inside the air expansion cone 1. The outer contour of the expanded-diameter section 63 is adapted to the inner contour of the air expansion cone 1, the outer wall of the expanded-diameter section 63 abuts the inner wall of the air expansion cone 1, the locking ring 62 abuts one end of the air inlet 11 of the air expansion cone 1, and the connecting joint 6 is clamped to the air inlet 11 of the air expansion cone 1 along the axial direction of the air expansion cone 1. By adjusting the position of the locking ring 62 on the threaded equal-diameter section 61, the resistance of the connecting joint 6 to the rotation of the air expansion cone 1 can be changed, thereby adapting to different working conditions.

[0036] In this embodiment, the bottom end of the balancing rod 3 can be fixed to the fixing frame 15, and the fixing frame 15 has a slot 14 for accommodating and abutting the balancing rod 3. For example, a balancing plate 34 is hingedly connected to the bottom end of the sleeve rod 33, and the edge of the balancing plate 34 extends out of the edge of the sleeve rod 33. The shape of the slot 14 is adapted to the shape of the balancing plate 34, and the rotation axis of the balancing plate 34 is parallel to the rotation axis of the air expansion cone 1. By lengthening or shortening the balancing rod 3 and rotating the balancing rod 3 relative to the air expansion cone 1, the balancing plate 34 can always maintain a posture of fitting the external foundation, thereby providing effective support for the air expansion cone 1. The balancing plate 34 can also be placed inside the slot 14 after the balancing rod 3 is lengthened and rotated, so that an approximately triangular structure is formed between the fixing frame 15, the balancing rod 3 and the air expansion cone 1, thereby reducing the load of the hinged structure of the air expansion cone 1 and the fixing frame 15 and extending the service life.

[0037] The air expansion cone 1 increases the flow area of ​​the air flow blown in from the air inlet 11, and increases the speed of the water mist blown out by the spray assembly 2 driven by the air flow, so that the water mist can float to a farther position, thereby increasing the effective range of the water mist. The air expansion cone 1 can be maintained in the first posture or the second posture to adapt to different working conditions.

[0038] In an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 4 A locking assembly 5 for maintaining the first posture and / or the second posture is fixed on the fixing frame 15, and the locking assembly 5 includes a positioning pin 52 for penetrating the fixing frame 15 and extending at least into the air expansion cone 1, and a positioning cover 51 threadedly connected to the fixing frame 15 and covering the positioning pin 52.

[0039] For example, refer to Figure 4 and Figure 5 A positioning hole 18 for accommodating a positioning pin 52 is provided on the outer wall of the air expansion cone 1. The positioning hole 18 is arranged along the radial direction of the air expansion cone 1 at the air outlet 12. A plurality of adjustment holes 17 are provided on the fixing frame 15 for aligning the positioning holes 18 at different elevation angles of the air outlet 12 and for accommodating the positioning pin 52. There are four adjustment holes 17 that are evenly distributed along the circumference. The axis of the adjustment hole 17 is parallel to the axis of the positioning hole 18. The adjustment hole 17 passes through the fixing frame 15 in the horizontal direction. A connecting tube 16 that is coaxial with the adjusting hole 17 and has the same inner diameter as the adjusting hole 17 is fixed at the opening of the adjusting hole 17 on the fixing frame 15. A guide countersunk hole 161 is provided at one end of the connecting tube 16 that is away from the fixing frame 15. The guide countersunk hole 161 is in the shape of a tapered hole that expands in diameter from the fixing frame 15 to the direction away from the fixing frame 15.

[0040] In this embodiment, the air expansion cone 1 is rotated until the positioning hole 18 is coaxial with an adjustment hole 17, and one end of the positioning pin 52 is extended into the positioning hole 18 through the guide countersunk hole 161, the connecting tube 16, and the adjustment hole 17 in sequence. At this time, the other end of the positioning pin 52 is flush with the end of the connecting tube 16 away from the fixing frame 15, and the angle of the air expansion cone 1 can be adjusted by threading the positioning cover 51 onto the connecting tube 16.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust suppression spray device for coal mines, characterized in that: include: A fixing frame (15) having at least two fixing points (13) for fixing to an external foundation; An air expansion cone (1) having an air inlet (11) for connecting to an external air source and an air outlet (12) for expanding the diameter, the air expansion cone (1) being fixed to the fixing frame (15) and having at least a first posture and a second posture capable of causing the air outlet (12) to have different elevation angles; A spray assembly (2) is fixed to the air diffusion cone (1) and is evenly distributed in a ring shape inside the edge of the air outlet (12), and is used for spraying in a direction away from the air outlet (12).

2. The dust suppression spray device for coal mines according to claim 1, characterized in that: A locking assembly (5) for maintaining the first posture and / or the second posture is fixed to the fixing frame (15); the air diffusion cone (1) is hingedly connected to the fixing frame (15); the locking assembly (5) comprises a positioning pin (52) for penetrating the fixing frame (15) and extending at least into the air diffusion cone (1); and a positioning cover (51) threadedly connected to the fixing frame (15) and covering the positioning pin (52).

3. The dust suppression spray device for coal mines according to claim 2, characterized in that: A positioning hole (18) for accommodating the positioning pin (52) is provided on the outer wall of the air diffusion cone (1), and a plurality of adjustment holes (17) for aligning the positioning hole (18) at different elevation angles of the air outlet (12) and for accommodating the positioning pin (52) are provided on the fixing frame (15), and the opening of the adjustment hole (17) has a guide countersunk hole (161).

4. The dust suppression spray device for coal mines according to claim 1, characterized in that: It also comprises a balance rod (3) spaced apart from the fixing frame (15) and used to support the air diffusion cone (1); the balance rod (3) has a first length adapted to the first posture, and has a second length adapted to the second posture.

5. The dust suppression spray device for coal mines according to claim 4, characterized in that: The top end of the balance rod (3) is hinged to the air diffusion cone (1), and the bottom end of the balance rod (3) can be fixed to the fixing frame (15).

6. The dust suppression spray device for coal mines according to claim 5, characterized in that: The fixing frame (15) has a slot (14) for accommodating and abutting against the balancing pole (3).

7. The dust suppression spray device for coal mines according to claim 1, characterized in that: The spray assembly (2) comprises a nozzle (21), an annular frame (23) for carrying the nozzle (21), and a connecting rod (22) for fixing the annular frame (23) to the edge of the air diffusion cone (1).

8. The dust suppression spray device for coal mines according to claim 1, characterized in that: A connecting joint (6) for threaded connection to an air inlet pipe and communicating with the air inlet (11) is clamped on the air diffusion cone (1), and the connecting joint (6) is capable of rotating around the axis of the air diffusion cone (1).

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