Spraying and dust settling device for tunnel blasting

Abstract

The utility model provides a spraying and dust settling device for tunnel blasting, and belongs to the technical field of spraying equipment. Comprising a vehicle body, a water tank is arranged in the vehicle body, the top of the water tank is connected with a spraying assembly, and the top of the spraying assembly is rotatably connected with a blowing assembly. Through the double-end cam and the movable nozzle, when the air pipe rotates vertically, the movable nozzle can be ejected upwards by a certain distance, it is guaranteed that the atomization nozzle is located on the axis of the air pipe all the time, and the situation that the fan position and the spraying position are staggered due to lifting of the air pipe is avoided; and the fan can better blow water mist sprayed by the atomizing nozzle into the tunnel, so that the spraying effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of spraying equipment, and particularly relates to a spray dust reduction device for tunnel blasting. Background Technique

[0002] Tunnel engineering belongs to underground structures, and underground structures are diverse. The construction methods and technologies for constructing underground structures are also diverse. The formation and development of construction methods and technologies are related to the characteristics of underground structures. Its characteristics are that the longitudinal length ranges from several meters to more than ten kilometers, the cross-section is relatively small, generally 5-6m high and 5 to more than ten meters wide for the longitudinal underground structure. Due to the small cross-section of the tunnel, the ventilation conditions are poor, and generally the tunneling method is used for operation during construction. Therefore, dust and other substances are generated during the construction process and are not easily dispersed, posing a danger to the health of operators. Therefore, during the current construction process, the interior of the tunnel is generally dust-reduced by spraying equipment.

[0003] A spraying device is a machine that disperses a liquid into a mist, which is a type of machinery and is widely used in tunnel blasting projects. In tunnel blasting projects, it is necessary to deal with the negative effects generated by blasting. In addition to controlling the traditional hazards such as blasting vibration, flying stones, shock waves, and noise, it is also necessary to effectively control the dust generated by blasting.

[0004] An existing spraying device, such as a movable tunnel construction spray dust reduction device proposed in the patent application with the application number 2021208187473, includes a first outer shell. A rotating disk is arranged above the first outer shell, and a driving structure for driving the rotating disk to rotate is arranged on one side of the rotating disk. A second outer shell is arranged above the first outer shell. A blower is fixedly arranged inside the second outer shell. A first water pipe is arranged on the blowing side of the blower. A plurality of atomizing nozzles are arranged on the first water pipe. A water storage tank is fixedly arranged on the rotating disk, and the water storage tank is communicated with the first water pipe. An air outlet is opened on the side wall of the second outer shell close to the first water pipe. Although this device solves the problem of the rotation of the atomizing nozzles, this device can only spray horizontally. Due to the limited lifting height of the device, it cannot effectively reduce the dust at lower or higher positions in the tunnel, and the dust reduction effect is limited. Content of the Utility Model

[0005] In order to solve the problems existing in the above-mentioned prior art, a spray dust reduction device for tunnel blasting is proposed.

[0006] The technical solution for the present utility model to solve the technical problem is as follows: A spray dust reduction device for tunnel blasting, including a vehicle body, a water tank is arranged inside the vehicle body, a spray assembly is connected to the water tank, the top of the spray assembly is rotatably connected to a blowing assembly, and the blowing assembly can rotate vertically with the top of the spray assembly as the axis.

[0007] Preferably, the blowing assembly includes an air duct, one end of the air duct is fixedly connected to a fan, and the other end of the air duct is an air outlet; a relief groove is opened at the bottom of the air duct, a rotating rod is horizontally connected in the relief groove, the middle of the rotating rod is rotatably connected to the spray assembly; a double-headed cam is fixedly connected to the rotating rod, and the double-headed cam is installed on the rotating rod inside the spray assembly.

[0008] Preferably, the spray assembly includes a hollow vertical pipe, the bottom of the hollow vertical pipe is communicated with the water tank, the top of the hollow vertical pipe is vertically slidably connected with a movable nozzle, the top of the movable nozzle extends out of the hollow vertical pipe, and an atomizing nozzle is installed at the top of the movable nozzle; a spring is sleeved on the movable nozzle, one end of the spring is connected to the hollow vertical pipe, the other end of the spring is connected to the top of the piston plate, and the bottom of the piston plate is movably connected to the double-headed cam, and the rotation of the double-headed cam drives the piston plate to slide vertically along the inner wall of the hollow vertical pipe.

[0009] Preferably, the straight line where the large diameter of the double-headed cam is located is arranged parallel to the center line direction of the air duct.

[0010] Preferably, a second sealing ring is installed between the piston plate and the hollow vertical pipe, and the second sealing ring is fixedly connected to the outer wall of the piston plate.

[0011] Preferably, a supporting ring is fixedly connected to the inner wall of the middle part of the water tank, the supporting ring is coaxially arranged with the hollow vertical pipe, a first sealing ring is fixedly connected to the supporting ring, a rotating bearing is installed on the first sealing ring, the outer ring of the rotating bearing is fixed to the top of the water tank, and the inner ring of the bearing is fixedly connected to the hollow vertical pipe.

[0012] Preferably, a drain pipe is communicated with the bottom of the water tank, and a water inlet pipe is connected to the side wall of the water tank.

[0013] Preferably, a water level indicator is communicated with one side of the bottom of the water tank, and the water level indicator is fixedly connected to the outer wall of the vehicle body.

[0014] Preferably, four groups of wheels are installed at the bottom of the vehicle body, and the four groups of wheels are respectively rotatably connected to the four corners of the bottom of the vehicle body.

[0015] Compared with the prior art, the above technical solution has the following advantages or beneficial effects:

[0016] 1. Through the double-headed cam and the movable nozzle of the present utility model, when the air duct rotates vertically, the movable nozzle can be jacked up a certain distance, ensuring that the atomizing nozzle is always located on the axis of the air duct, avoiding the misalignment of the position of the fan and the spraying position due to the lifting of the air duct, enabling the fan to better blow the water mist sprayed by the atomizing nozzle into the tunnel, and improving the spraying effect.

[0017] 2. The utility model realizes that the blowing component can rotate 360 degrees in the horizontal direction through the cooperation of the bearing and the hollow vertical pipe, and realizes the vertical adjustment of the spraying component and the blowing component through the double-headed cam, thereby realizing the free adjustment of the angle and orientation of the spraying end of the blowing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The attached drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0019] Figure 1 It is a schematic structural diagram of the present utility model.

[0020] Figure 2 It is a structural sectional view of the present utility model.

[0021] Figure 3 It is Figure 2 The partial enlarged view at B in

[0022] Figure 4 It is Figure 2 The partial enlarged view at A in

[0023] Description of the reference numerals:

[0024] 1, vehicle body; 2, wheels; 3, water tank; 4, water inlet pipe; 5, water level indicator; 6, support ring; 7, first sealing ring; 8, rotating bearing; 9, hollow vertical pipe; 10, air duct; 11, fan; 12, relief groove; 13, movable nozzle; 14, atomizing nozzle; 15, spring; 16, piston plate; 17, second sealing ring; 18, double-headed cam; 19, rotating rod; 20, drain pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below through specific embodiments and in conjunction with its accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. In addition, the present utility model may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present utility model omits the description of well-known components, processing technologies and processes to avoid unnecessarily limiting the present utility model. The orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment 1:

[0027] Reference Figures 1-4In order to solve the problem that the air duct 10 can only blow air horizontally, resulting in a general dust reduction effect at higher or lower positions, this embodiment proposes a spray dust reduction device for tunnel blasting, which is characterized by: comprising a vehicle body 1, a water tank 3 is arranged inside the vehicle body 1, the side wall of the water tank 3 is connected to the water inlet pipe 4, the bottom is connected to the drain pipe 20, the water tank 3 is connected to the spray assembly, the top of the spray assembly is rotatably connected to the blowing assembly, and the blowing assembly can be vertically rotated with the top of the spray assembly as the axis. The blowing assembly includes an air duct 10, one end of the air duct 10 is fixedly connected to the fan 11, and the other end of the air duct 10 is an air outlet; a clearance groove 12 is opened at the bottom of the air duct 10, and a rotating rod 19 is horizontally connected in the clearance groove 12, and the middle of the rotating rod 19 is rotatably connected to the spray assembly. The spray assembly includes a hollow vertical pipe 9, the bottom of the hollow vertical pipe 9 is connected to the water tank 3, the top of the hollow vertical pipe 9 is vertically connected to a movable nozzle 13, and the movable nozzle 13 is coaxially arranged with the hollow vertical pipe 9; the top of the movable nozzle 13 extends out of the hollow vertical pipe 9, and an atomizing nozzle 14 is installed on the top of the movable nozzle 13; the inner wall of the middle part of the water tank 3 is fixedly connected to a supporting ring 6, and the supporting ring 6 is coaxially arranged with the hollow vertical pipe 9, and a first sealing ring 7 is fixedly connected to the supporting ring 6, and a rotating bearing 8 is installed on the first sealing ring 7, and the outer ring of the rotating bearing 8 is fixed to the top of the water tank 3, and the inner ring of the bearing 8 is fixedly connected to the hollow vertical pipe 9.

[0028] In this embodiment, one side of the bottom of the water tank 3 is connected to a water level display 5, which is fixed to the outer wall of the vehicle body 1; four sets of wheels 2 are installed at the bottom of the vehicle body 1, and the four sets of wheels 2 are rotatably connected to the four corners of the bottom of the vehicle body 1, so as to facilitate the transportation and use of the device.

[0029] Directions:

[0030] When in use, the vehicle body 1 is moved to the designated tunnel position through the moving part, the water source is connected to the water inlet pipe 4, and water is continuously injected into the water tank 3 through the water inlet pipe 4. When the water in the water tank 3 is full of water, due to the continuous injection of water, the water moves from the water tank 3 to the hollow vertical pipe 9 under the action of water pressure until the hollow vertical pipe 9 is full of water, and then the water forms water mist through the spray assembly and sprays into the blowing assembly, and the blowing assembly blows out the water mist. When the angle of the blowing assembly needs to be adjusted, the angle adjustment in the vertical direction can be achieved by rotating the blowing assembly and the hollow vertical pipe 9. The blowing assembly can be rotated 360° in the horizontal direction by cooperating with the hollow vertical pipe 9 and the bearing 8 to facilitate adjustment of the direction, thereby realizing free adjustment of the angle and direction of the spray end of the blowing assembly; when the dust reduction task is completed, the water supply to the water inlet pipe 4 is stopped, and the residual water in the water tank 3 is discharged through the drain pipe 20, and the water level display 5 is used to display the residual water amount in the water tank 3.

[0031] Embodiment 2:

[0032] refer to Figures 1-4, the other parts are the same as those in the first embodiment, except that: in the first embodiment, due to the vertical rotation of the air duct 10, the position of the atomizing nozzle 14 is lower than the position of the center line of the air duct 10 after the air duct 10 is tilted, and the effect of the fan 11 blowing the atomized water will be reduced. The atomized water will fall into the air duct 10 due to the weakening of the wind force, which will also reduce the dust reduction effect. Therefore, in this embodiment, a double-headed cam 18 mechanism is added to the rotating rod 19 to ensure that the atomizing nozzle 14 is always located on the center line. The following is a detailed description:

[0033] A spring 15 is sleeved on the movable nozzle 13. One end of the spring 15 is connected to the hollow vertical pipe 9, and the other end of the spring 15 is connected to the top of the piston plate 16. The bottom of the piston plate 16 is movably connected to the double-headed cam 18. The rotation of the double-headed cam 18 drives the piston plate 16 to slide vertically along the inner wall of the hollow vertical pipe 9. The straight line where the large diameter of the double-headed cam 18 is located is arranged parallel to the axis direction of the air duct 10. The rotation of the air duct 10 can drive the rotation of the double-headed cam 18. The double-headed cam 18 transitions from a small diameter to a large diameter, and the double-headed cam 18 pushes up the movable nozzle 13, so that the atomizing nozzle 14 is always located on the center line of the air duct 10.

[0034] Finally, it should be noted that: the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spray dust suppression device for tunnel blasting, characterized in that: The vehicle comprises a vehicle body (1), a water tank (3) is arranged in the vehicle body (1), the top of the water tank (3) is connected to a spray assembly, the top of the spray assembly is rotatably connected to a blow assembly, and the blow assembly can be vertically rotated with the top of the spray assembly as an axis; The blowing assembly comprises an air duct (10), one end of which is fixedly connected to a fan (11), and the other end of which is an air outlet; a clearance groove (12) is provided at the bottom of the air duct (10), a rotating rod (19) is transversely connected in the clearance groove (12), and the middle part of the rotating rod (19) is rotatably connected to the spray assembly; a double-headed cam (18) is fixedly connected to the rotating rod (19), and the double-headed cam (18) is mounted on the rotating rod (19) in the spray assembly.

2. A spray dust suppression device for tunnel blasting according to claim 1, characterized in that: The spray assembly comprises a hollow vertical pipe (9), the bottom of the hollow vertical pipe (9) is connected to a water tank (3), the top of the hollow vertical pipe (9) is vertically slidably connected to a movable nozzle (13), the top of the movable nozzle (13) extends out of the hollow vertical pipe (9), and an atomizing nozzle (14) is installed on the top of the movable nozzle (13); a spring (15) is sleeved on the movable nozzle (13), one end of the spring (15) is connected to the hollow vertical pipe (9), and the other end of the spring (15) is connected to the top of a piston plate (16), the bottom of the piston plate (16) is movably connected to a double-headed cam (18), and the double-headed cam (18) rotates to drive the piston plate (16) to slide vertically along the inner wall of the hollow vertical pipe (9).

3. A spray dust suppression device for tunnel blasting according to claim 2, characterized in that: The straight line on which the maximum diameter of the double-headed cam (18) is located is parallel to the axial direction of the air duct (10).

4. A spray dust suppression device for tunnel blasting according to claim 2, characterized in that: A second sealing ring (17) is installed between the piston plate (16) and the hollow vertical pipe (9), and the second sealing ring (17) is fixedly connected to the outer wall of the piston plate (16).

5. The spray dust suppression device for tunnel blasting according to claim 2, characterized in that: A support ring (6) is fixedly connected to the inner wall of the middle part of the water tank (3), the support ring (6) is coaxially arranged with the hollow vertical pipe (9), the support ring (6) is fixedly connected to the first sealing ring (7), a rotating bearing (8) is installed on the first sealing ring (7), the outer ring of the rotating bearing (8) is fixed to the top of the water tank (3), and the inner ring of the bearing is fixedly connected to the hollow vertical pipe (9).

6. The spray dust suppression device for tunnel blasting according to claim 1, characterized in that: The bottom of the water tank (3) is connected to a drainage pipe (20), and the side wall of the water tank (3) is connected to a water inlet pipe (4).

7. The spray dust suppression device for tunnel blasting according to claim 1, characterized in that: One side of the bottom of the water tank (3) is connected to a water level display (5), and the water level display (5) is fixedly connected to the outer side wall of the vehicle body (1).

8. A spray dust suppression device for tunnel blasting according to any one of claims 1 to 7, characterized in that: Four sets of wheels (2) are installed at the bottom of the vehicle body (1), and the four sets of wheels (2) are rotatably connected to the four corners of the bottom of the vehicle body (1).

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