Dustproof and fireproof coal seam drilling mechanism

Abstract

The utility model relates to a drilling structure, in particular to a dustproof and fireproof coal seam drilling mechanism which comprises a fixing plate arranged on a drill rod in a sleeving mode, a plurality of buffering devices arranged at the end, close to the head of the drill rod, of the drill rod in a sleeving mode and a connecting assembly used for connecting the buffering devices and the fixing plate. The multiple buffer devices are distributed in the length direction of the drill rod. The buffer device comprises a fixing ring arranged on the drill rod in a sleeving mode, a fixing hole formed in the side wall of the fixing ring, a buffer plate clamped in the fixing hole and a buffer block arranged on the side, close to the drill rod, of the buffer plate. The gap between the buffer block and the drill rod is smaller than the gap between the fixing ring and the drill rod. The dustproof and fireproof coal seam drilling mechanism can effectively prevent sparks from being generated in the drilling process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drilling structure, specifically, relate to a dustproof fireproof coal seam drilling mechanism. BACKGROUND

[0002] Coal seam drilling refers to drilling at relevant positions in the coal seam, passing through the drilling to open up the gas extraction channel, and then extracting the gas through the drilling, usually using a drill rod to drill.

[0003] During drilling, in order to prevent gas leakage at the drilling site, the drill hole and drill rod need to be sealed, although the sealing is performed, due to the metal material of the drill rod and the need to set a casing structure around the drill rod to maintain the stability of the drill rod during drilling, the drill rod itself will vibrate to a certain extent during drilling, therefore, when the drill rod contacts the casing structure around it, sparks or sparks may be generated, if the drilling contains a certain concentration of gas at this time, there is a risk of fire. Therefore, a device that can effectively prevent fire during drilling is needed. SUMMARY

[0004] The utility model aims at providing a dustproof fireproof coal seam drilling mechanism, which can effectively prevent sparks during drilling.

[0005] The utility model discloses a dustproof fireproof coal seam drilling mechanism, which comprises a fixed plate sleeved on a drill rod, a plurality of buffer devices sleeved on the drill rod near the head end, and a connecting assembly for connecting the buffer devices and the fixed plate.

[0006] Further, a pair of fixed holes are provided on the fixed ring, and the pair of fixed holes are symmetrically arranged; the buffer plate is arranged in each of the pair of fixed holes.

[0007] Further, the included angle between adjacent buffer devices is 90 degrees.

[0008] Further, the buffer plate and the buffer block are connected by bolts.

[0009] Further, the connecting assembly comprises a plurality of first connecting holes formed on the fixing ring, a plurality of second connecting holes formed on the buffer plate, a plurality of third connecting holes formed on the fixing plate, and a plurality of connecting rods; the second connecting holes correspond to the first connecting holes, and the first connecting holes correspond to the third connecting holes; the connecting rods are arranged through the first connecting holes, the second connecting holes and the third connecting holes; and the two ends of the connecting rods are threadedly connected with nuts.

[0010] Further, the connecting rod is of a hollow structure, one end of the connecting rod close to the fixing plate is detachably connected with a water supply device, and the other end of the connecting rod away from the fixing plate is formed with a water spraying hole.

[0011] Further, the water spraying hole is provided with a plurality of water spraying holes, and the water spraying holes are formed on the side wall of the connecting pipe.

[0012] Further, the side of the fixing plate away from the buffer device is provided with a sleeve, and the sleeve is sleeved on the drill rod.

[0013] The dustproof and fireproof coal seam drilling mechanism has the following advantages and beneficial effects: in the process of drilling by rotating the drill rod, the interaction between the drill rod and the drill hole makes the drill rod vibrate radially; when the drill rod vibrates, the drill rod will first contact the buffer block because the gap between the drill rod and the buffer block is smaller; the vibration generated by the drill rod can be offset by the buffer block; the rubber material is used as the buffer block, and no sparks or sparks will be generated when the drill rod collides with the buffer block, so there is no risk of igniting gas, and the safety of the drilling process is more guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The dustproof and fireproof coal seam drilling mechanism provided by the embodiment of the utility model is shown in a perspective view of structure;

[0015] Figure 2 The dustproof and fireproof coal seam drilling mechanism provided by the embodiment of the utility model is shown in a perspective view of structure;

[0016] Figure 3 The dustproof and fireproof coal seam drilling mechanism provided by the embodiment of the utility model is shown in a perspective view of structure;

[0017] Figure 4 The dustproof and fireproof coal seam drilling mechanism provided by the embodiment of the utility model is shown in a perspective view of structure;

[0018] Figure 5 The dustproof and fireproof coal seam drilling mechanism provided by the embodiment of the utility model is shown in a perspective view of structure;

[0019] Figure 6A structure schematic diagram of a buffer plate part after expansion provided by the utility model.

[0020] Figure 7 A structure schematic diagram of a fixed plate part provided by the utility model.

[0021] Icon: 10-drill rod, 11-fixed plate, 12-casing, 13-third connecting hole, 20-buffering device, 21-fixed ring, 22-fixed hole, 23-first connecting hole, 24-buffering plate, 25-buffering block, 26-bolt, 27-second connecting hole, 31-connecting rod, 32-water injection hole, 33-nut. DETAILED DESCRIPTION

[0022] Embodiment

[0023] The following will be further described in combination with specific embodiments, such as the accompanying drawings Figure 1 - the accompanying drawings Figure 7 As shown in the drawings, the coal seam drilling mechanism of the embodiment for preventing dust and fire comprises a fixed plate 11 sleeved on a drill rod 10, a plurality of buffering devices 20 sleeved on the drill rod 10 close to one end of the head thereof, and a connecting assembly for connecting the buffering devices 20 and the fixed plate 11; the plurality of buffering devices 20 are distributed along the length direction of the drill rod 10; the buffering device 20 comprises a fixed ring 21 sleeved on the drill rod 10, a fixed hole 22 opened in the side wall of the fixed ring 21, a buffering plate 24 clamped in the fixed hole 22, and a buffering block 25 arranged on one side of the buffering plate 24 close to the drill rod 10; the gap between the buffering block 25 and the drill rod 10 is smaller than the gap between the fixed ring 21 and the drill rod 10. Specifically, in the process of drilling by rotating the drill rod 10, the interaction between the drill rod 10 and the drilling hole makes the drill rod 10 produce radial shaking, when the drill rod 10 shakes, the drill rod 10 will preferentially contact the buffering block 25 because the gap between the buffering block 25 and the drill rod 10 is smaller, the vibration generated by the drill rod 10 can be offset through the buffering block 25, and the use of rubber material as the buffering block 25 will not produce sparks, fire and other phenomena when the drill rod 10 collides with the buffering block 25, so that there is no risk of igniting gas, and the safety of the drilling process is more guaranteed.

[0024] In the embodiment, the fixed ring 21 is provided with a pair of fixed holes 22, and the pair of fixed holes 22 are symmetrically arranged; the buffering plate 24 is arranged in each of the pair of fixed holes 22. The included angle between adjacent buffering devices 20 is 90 degrees. Specifically, in this way, the buffering block 25 can better surround the drill rod 10.

[0025] In the embodiment, the buffering plate 24 and the buffering block 25 are connected through a bolt 26. Specifically, because a large amount of solid particles will be generated in the drilling process, the buffering block 25 has a certain mode, and the use of the bolt 26 to connect the buffering plate 24 and the buffering block 25 can better replace the buffering block 25.

[0026] The connecting assembly in the embodiment comprises a plurality of first connecting holes 23 formed on the fixing ring 21, a plurality of second connecting holes 27 formed on the buffer plate 24, a plurality of third connecting holes 13 formed on the fixing plate 11, and a plurality of connecting rods 31; the second connecting holes 27 correspond to the first connecting holes 23, and the first connecting holes 23 correspond to the third connecting holes 13; the connecting rods 31 pass through the first connecting holes 23, the second connecting holes 27, and the third connecting holes 13; and the connecting rods 31 are both screwed with nuts 33 at the two ends. Specifically, after the buffer devices 20 are stacked, the connecting rods 31 pass through the plurality of buffer devices 20, and the nuts 33 are tightened at the two ends of the connecting rods, so that the buffer devices 20 can be fixed on the fixing plate 11.

[0027] The connecting rod 31 in the embodiment is of a hollow structure, and a water supply device is detachably connected to one end of the connecting rod 31 close to the fixing plate 11, and a water spraying hole 32 is formed at the other end of the connecting rod 31 away from the fixing plate 11. Specifically, after the water pump and the water pipe are communicated with the connecting rod 31, water can be pumped into the connecting rod 31 by the water pump and sprayed out through the water spraying hole 32, so that the dust generated in the drilling process can be settled, and a large amount of sparks generated in the drilling process can be avoided to ignite the gas.

[0028] The water spraying hole 32 in the embodiment is provided in a plurality of numbers, and the plurality of water spraying holes 32 are all formed on the side wall of the connecting pipe.

[0029] The fixing plate 11 in the embodiment is provided with a sleeve 12 on the side away from the buffer device 20, and the sleeve 12 is sleeved on the drill rod 10.

[0030] In summary, the dustproof and fireproof coal seam drilling mechanism in the embodiment can make the drill rod 10 produce radial shaking due to the interaction between the drill rod 10 and the drilling hole in the process of rotating drilling of the drill rod 10, the drill rod 10 will preferentially contact the buffer block 25 due to the smaller gap between the drill rod 10 and the buffer block 25, the vibration generated by the drill rod 10 can be offset by the buffer block 25, and the drill rod 10 and the buffer block 25 will not produce sparks, sparks, etc. when colliding, so there is no risk of igniting gas, and the safety of the drilling process is more guaranteed.

[0031] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can be variously changed and varied. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dust and fire proof coal seam drilling mechanism, characterized in that: The application relates to a drilling rod buffer device, which comprises a fixing plate (11) sleeved on a drilling rod (10), a plurality of buffer devices (20) sleeved on the drilling rod (10) near the head end of the drilling rod (10), and a connecting assembly used for connecting the buffer devices (20) and the fixing plate (11). The buffer devices (20) are distributed along the length direction of the drilling rod (10); the buffer device (20) comprises a fixing ring (21) sleeved on the drilling rod (10), a fixing hole (22) formed in the side wall of the fixing ring (21), a buffer plate (24) clamped in the fixing hole (22), and a buffer block (25) arranged on the buffer plate (24) near the side of the drilling rod (10); the gap between the buffer block (25) and the drilling rod (10) is smaller than the gap between the fixing ring (21) and the drilling rod (10).

2. The dust and fire resistant coal seam drilling mechanism of claim 1, wherein: The fixing ring (21) is provided with a pair of fixing holes (22), and the pair of fixing holes (22) are symmetrically arranged; the pair of fixing holes (22) are both provided with the buffer plate (24).

3. The dust and fire resistant coal seam drilling mechanism of claim 2, wherein: The included angle between adjacent buffer devices (20) is 90 degrees.

4. The dust and fire resistant coal seam drilling mechanism of claim 1, wherein: The buffer plate (24) and the buffer block (25) are connected through a bolt (26).

5. The dust and fire resistant coal seam drilling mechanism of claim 1, wherein: The connecting assembly comprises a plurality of first connecting holes (23) formed in the fixing ring (21), a plurality of second connecting holes (27) formed in the buffer plate (24), a plurality of third connecting holes (13) formed in the fixing plate (11), and a plurality of connecting rods (31). The second connecting holes (27) correspond to the first connecting holes (23), and the first connecting holes (23) correspond to the third connecting holes (13); the connecting rods (31) pass through the first connecting holes (23), the second connecting holes (27) and the third connecting holes (13); and the connecting rods (31) are both threadedly connected with nuts (33) at the two ends.

6. The dust and fire resistant coal seam drilling mechanism of claim 5, wherein: The connecting rod (31) is a hollow structure, one end of the connecting rod (31) near the fixing plate (11) is detachably connected with a water supply device, and the other end of the connecting rod (31) away from the fixing plate (11) is provided with a water injection hole (32).

7. The dust and fire resistant coal seam drilling mechanism of claim 6, wherein: The water injection hole (32) is provided with a plurality of water injection holes (32), and the water injection holes (32) are formed in the side wall of the connecting pipe.

8. The dust and fire resistant coal seam drilling mechanism of claim 1, wherein: The side of the fixing plate (11) away from the buffer device (20) is provided with a sleeve (12), and the sleeve (12) is sleeved on the drilling rod (10).

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