Down-the-hole drill dust fall device

Abstract

The down-the-hole drill dust falling device comprises a drilling frame and a drilling rod, a fixing frame is arranged on the drilling frame, a dust cover is arranged on the fixing frame, the dust cover communicates with an exhaust pipe, the end, away from the dust cover, of the exhaust pipe communicates with a filter box and an exhaust fan, a dust discharging opening is formed in the bottom of the filter box, and a dust discharging opening is formed in the bottom of the filter box. A filter screen is mounted in the filter box, the filter screen is used for filtering dust and enabling the dust to fall off through the dust discharge port under the action of gravity, and an air inlet of the exhaust fan communicates with the interior of the filter box; mounting grooves are formed in the two opposite side walls in the fixing frame, mounting blocks are arranged on the dust cover, and the mounting blocks and the mounting grooves are used in a matched mode so that the dust cover can be detachably connected into the fixing frame. According to the scheme, the problem that an existing dust cover is inconvenient to install is solved.

Description

Technical Field

[0001] This utility model relates to the field of down-the-hole drilling rig technology, and specifically to a dust suppression device for down-the-hole drilling rigs. Background Technology

[0002] Down-the-hole drills are specialized equipment used for drilling holes in rocks. They are widely used in mining, tunnel construction, foundation treatment, and other fields. By setting an impact mechanism inside the drill rod and using compressed air to drive the impactor, they can achieve efficient rock crushing and drilling.

[0003] During the drilling process, down-the-hole drills generate a large amount of debris through the contact between the high-speed rotating drill bit and the rock or soil. This debris is carried out of the hole by high-pressure airflow, forming a large amount of dust. The dust particles vary in size, ranging from micrometers to millimeters. The finer dust particles are more likely to remain suspended in the air and not settle for a long time. The dust suspended in the air will reduce air quality and visibility, affecting the construction area and the surrounding environment. However, the existing dust covers are not convenient to be directly attached to the working face, and dust is easy to spill out. In addition, the dust covers are not convenient to install and remove from the frame. Utility Model Content

[0004] The present invention aims to provide a dust suppression device for down-the-hole drilling rigs to solve the problem that current dust covers are inconvenient to install.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dust suppression device for down-the-hole drill rigs, including a drill frame and a drill rod, a fixed frame on the drill frame, a dust cover on the fixed frame, an exhaust pipe connected to the dust cover, a filter box and an exhaust fan connected to the end of the exhaust pipe away from the dust cover, a dust discharge port at the bottom of the filter box, a filter screen installed inside the filter box, the filter screen is used to filter dust and allow the dust to fall through the dust discharge port under the action of gravity, and the air inlet of the exhaust fan is connected to the inside of the filter box;

[0006] The mounting bracket has mounting grooves on its two opposite side walls, and the dust cover has mounting blocks that work in conjunction with the mounting grooves to allow the dust cover to be detachably connected to the mounting bracket.

[0007] Furthermore, one end of the mounting groove is provided with a turning groove, the bottom of the turning groove is provided with a vertical snap-fit ​​hole, the mounting block is provided with a snap-fit ​​groove, the snap-fit ​​groove is provided with a snap-fit ​​plate, one end of the snap-fit ​​plate is provided with a snap-fit ​​spring between it and the snap-fit ​​groove, and the other end of the snap-fit ​​plate is provided with a snap-fit ​​rod, which is used in conjunction with the snap-fit ​​hole.

[0008] Furthermore, the dust cover includes a fixed cover and a movable cover. The fixed cover has a movable groove inside, and a movable plate is provided inside the movable groove. The movable cover is fixedly mounted on the movable plate so that the dust cover is fastened to the working surface.

[0009] Furthermore, a moving spring is provided between the moving plate and the moving cover, so that the moving cover has a downward elastic force.

[0010] Furthermore, a sealing gasket is provided at the bottom of the movable cover, which improves the sealing performance between the dust cover and the working surface.

[0011] Furthermore, the fixing frame is provided with a reset plate, and a reset rod is fixedly connected to the lower surface of the reset plate. The reset rod is slidably disposed in the snap-fit ​​hole to facilitate squeezing the snap-fit ​​rod.

[0012] Furthermore, a reset spring is sleeved on the top of the reset rod, the top end of the reset spring is fixedly connected to the bottom of the reset plate, and the bottom end of the reset spring is fixedly connected to the fixing frame, so as to facilitate the reset rod and the reset plate to move and reset.

[0013] Furthermore, the top of the filter box is provided with a clearance hole, which is located directly above the filter screen, and a fixing plate is detachably connected to the top of the filter screen.

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

[0015] 1. This solution uses a fixed frame and a dust cover to fasten the working face of the drill pipe, thereby preventing a large amount of dust generated during drill pipe operation from overflowing. By setting up an exhaust pipe, a filter box and an exhaust fan, the dusty air can be easily discharged and discharged into the air after being filtered by the filter screen, preventing direct emission and environmental pollution.

[0016] 2. This solution uses a movable groove, movable spring and movable plate inside the fixed cover to give the movable cover a continuous and stable downward pressing force. The sealing gasket improves the sealing between the dust cover and the working face, and the sealing plate improves the connection sealing between the dust cover and the drill rod, thereby preventing a large amount of dust from overflowing.

[0017] 3. This solution uses the locking spring, locking plate, and locking rod on the mounting block to engage with the locking holes on the fixing frame, making it easy to fix the dust cover to the fixing frame. The reset plate, reset rod, and reset spring facilitate the removal of the dust cover. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a dust suppression device for a down-the-hole drill rig according to the present invention;

[0019] Figure 2 This is a cross-sectional view of the fixing frame and dust cover in this utility model;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of a portion of the structure of A in the diagram;

[0021] Figure 4 This is a schematic diagram of the overall structure of the fixing frame in this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the filter box in this utility model. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method:

[0024] The reference numerals in the accompanying drawings of the instruction manual include: drill frame 1, drill rod 2, fixing frame 3, dust cover 4, exhaust pipe 5, filter box 6, exhaust fan 7, filter screen 8, dust outlet 9, mounting block 10, mounting groove 11, turning groove 12, snap-fit ​​groove 13, snap-fit ​​plate 14, snap-fit ​​spring 15, snap-fit ​​rod 16, snap-fit ​​hole 17, fixing cover 18, moving cover 19, moving groove 20, moving plate 21, moving spring 22, sealing gasket 23, sealing plate 24, reset plate 25, reset rod 26, reset spring 27, fixing plate 28, magnetic suction plate 29, and adsorption plate 30.

[0025] The basic implementation examples are as follows: Figure 1 ~Attached Figure 5 As shown:

[0026] A dust suppression device for a down-the-hole drill includes a drill frame 1 and a drill rod 2. A fixed frame 3 is provided on the drill frame 1, and a dust cover 4 is provided on the fixed frame 3. An exhaust pipe 5 is connected to the dust cover 4. The end of the exhaust pipe 5 away from the dust cover 4 is connected to a filter box 6 and an exhaust fan 7. A dust discharge port 9 is provided at the bottom of the filter box 6. A filter screen 8 is installed inside the filter box 6. An avoidance hole is provided at the top of the filter box 6 to allow the filter screen 8 to pass through when it is removed. The avoidance hole is located directly above the filter screen 8. A fixed plate 28 is provided at the top of the filter screen 8. A magnetic suction plate 29 is provided on the lower surface of the fixed plate 28. An adsorption plate 30 is fixedly connected to the top of the filter box 6. The adsorption plate 30 is located at the edge of the avoidance hole. The air inlet of the exhaust fan 7 is connected to the inside of the filter box 6.

[0027] Mounting grooves 11 are provided on opposite side walls of the fixed frame 3. Mounting blocks 10 are provided on the dust cover 4. The mounting blocks 10 cooperate with the mounting grooves 11 to allow the dust cover 4 to be detachably connected to the fixed frame 3. The dust cover 4 includes a fixed cover 18 and a movable cover 19. A movable groove 20 is provided in the fixed cover 18. A movable plate 21 is provided in the movable groove 20. The movable cover 19 is fixedly mounted on the movable plate 21 so that the dust cover 4 is fastened to the working surface. A movable spring 22 is provided between the movable plate 21 and the movable cover 19 so that the movable cover 19 has a downward elastic force. A sealing gasket 23 is provided at the bottom of the movable cover 19. Multiple sealing plates 24 are arranged in a circular array at the top of the dust cover 4.

[0028] One end of the mounting groove 11 is provided with a turning groove 12, and the bottom of the turning groove 12 is provided with a vertical snap-fit ​​hole 17. The mounting block 10 is provided with a snap-fit ​​groove 13, and a snap-fit ​​plate 14 is provided on the snap-fit ​​groove 13. A snap-fit ​​spring 15 is provided between one end of the snap-fit ​​plate 14 and the snap-fit ​​groove 13, and a snap-fit ​​rod 16 is provided at the other end of the snap-fit ​​plate 14. The snap-fit ​​rod 16 is used in conjunction with the snap-fit ​​hole 17.

[0029] The fixed frame 3 is provided with a reset plate 25. A reset rod 26 is fixedly connected to the lower surface of the reset plate 25, and the reset rod 26 is slidably disposed in the snap-fit ​​hole 17 to facilitate the squeezing of the snap-fit ​​rod 16. A reset spring 27 is sleeved on the top of the reset rod 26. The top end of the reset spring 27 is fixedly connected to the bottom of the reset plate 25, and the bottom end of the reset spring 27 is fixedly connected to the fixed frame 3 to facilitate the movement and reset of the reset rod 26 and the reset plate 25.

[0030] The specific implementation process is as follows:

[0031] When installing the dust cover 4, the mounting block 10 of the dust cover 4 is inserted into the steering groove 12 along the mounting groove 11. When the mounting block 10 is inserted into the steering groove 12, the snap-fit ​​rod 16 is pressed, causing the snap-fit ​​rod 16 to press against the snap-fit ​​plate 14 and the snap-fit ​​spring 15. The mounting block 10 is rotated. When the mounting block 10 moves to one end of the steering groove 12, and the snap-fit ​​rod 16 is aligned with the snap-fit ​​hole 17, the snap-fit ​​rod 16 extends into the snap-fit ​​hole 17 under the elastic force of the snap-fit ​​spring 15, thereby fixing the position of the mounting block 10 and the dust cover 4. When removing the dust cover 4, the reset plate 25 is pressed. The reset plate 25 compresses the reset spring 27, causing the reset rod 26 to press against the reset snap-fit ​​rod 16, causing the snap-fit ​​rod 16 to extend into the snap-fit ​​groove 13. Then the mounting block 10 can be rotated in the opposite direction to remove the dust cover 4.

[0032] When the down-the-hole drill is working, the moving spring 22 presses down on the moving plate 21 and the moving cover 19, so that the moving cover 19 and the sealing gasket 23 are fastened to the drilling working surface. The drill rod 2 moves down to drill through the sealing plate 24 and extends into the dust cover 4 to carry out drilling work. The exhaust fan 7 is started to draw out the dust-laden air. The gas is filtered through the filter screen 8 and discharged. The fallen dust is discharged through the dust outlet 9. The magnetic suction plate 29 and the adsorption plate 30 on the fixed plate 28 facilitate the cleaning and replacement of the filter screen 8.

Claims

1. A dust suppression device for down-the-hole drilling rigs, characterized in that: The system includes a drill frame and a drill rod. The drill frame is equipped with a fixed frame, and the fixed frame is equipped with a dust cover. An exhaust pipe is connected to the dust cover. The end of the exhaust pipe away from the dust cover is connected to a filter box and an exhaust fan. The bottom of the filter box is equipped with a dust discharge port. A filter screen is installed inside the filter box. The filter screen is used to filter dust and allow the dust to fall through the dust discharge port under the action of gravity. The air inlet of the exhaust fan is connected to the inside of the filter box. The mounting bracket has mounting grooves on its two opposite side walls, and the dust cover has mounting blocks that work in conjunction with the mounting grooves to allow the dust cover to be detachably connected to the mounting bracket.

2. The dust suppression device for down-the-hole drilling rigs according to claim 1, characterized in that: One end of the mounting groove is provided with a turning groove, and the bottom of the turning groove is provided with a vertical snap-fit ​​hole. The mounting block is provided with a snap-fit ​​groove, and a snap-fit ​​plate is provided on the snap-fit ​​groove. A snap-fit ​​spring is provided between one end of the snap-fit ​​plate and the snap-fit ​​groove, and a snap-fit ​​rod is provided at the other end of the snap-fit ​​plate. The snap-fit ​​rod is used in conjunction with the snap-fit ​​hole.

3. The dust suppression device for down-the-hole drilling rigs according to claim 2, characterized in that: The dust cover includes a fixed cover and a movable cover. The fixed cover has a movable groove inside, and a movable plate is provided inside the movable groove. The movable cover is fixedly mounted on the movable plate so that the dust cover is fastened to the working surface.

4. The dust suppression device for down-the-hole drilling rigs according to claim 3, characterized in that: A moving spring is provided between the moving plate and the moving cover, so that the moving cover has a downward elastic force.

5. A dust suppression device for down-the-hole drilling rigs according to claim 4, characterized in that: The bottom of the movable cover is equipped with a sealing gasket, which improves the sealing performance between the dust cover and the working surface.

6. A dust suppression device for down-the-hole drilling rigs according to claim 5, characterized in that: The fixing frame is provided with a reset plate, and a reset rod is fixedly connected to the lower surface of the reset plate. The reset rod is slidably disposed in the snap-fit ​​hole to facilitate squeezing the snap-fit ​​rod.

7. A dust suppression device for down-the-hole drilling rigs according to claim 6, characterized in that: A reset spring is fitted on the top of the reset rod. The top end of the reset spring is fixedly connected to the bottom of the reset plate, and the bottom end of the reset spring is fixedly connected to the fixing frame, so as to facilitate the movement and reset of the reset rod and the reset plate.

8. A dust suppression device for down-the-hole drilling rigs according to claim 7, characterized in that: The top of the filter box is provided with a clearance hole, which is located directly above the filter screen. A fixing plate is detachably connected to the top of the filter screen.

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