CN215949369U - Geological prospecting drilling hollow drilling tool coal taking device - Google Patents

Abstract

The utility model discloses a geological prospecting drilling hollow core drilling tool coal taking device, which comprises a core bit and a coal storage sleeve, wherein the core bit and the coal storage sleeve are both of a hollow structure with an upper opening and a lower opening, the upper end of the coal storage sleeve is connected with a drill rod, the lower end of the coal storage sleeve is connected with the core bit, the central line of the coal storage sleeve and the central line of the coring bit are on the same straight line, a conical cylinder is arranged in the coal storage sleeve, the central line of the conical cylinder and the central line of the coal storage sleeve are on the same straight line, a coal storage space is formed between the outer wall of the conical cylinder and the inner wall of the coal storage sleeve, the upper end and the lower end of the conical cylinder are both in an open structure or in a structure with the upper end closed and the lower end open, the bottom of the conical cylinder is arranged at the lower end of the interior of the coal storage sleeve through a first fixing ring or a second fixing ring, the bottom of the conical cylinder is arranged on the upper end face of the first fixing ring or the second fixing ring. The utility model can quickly sample the media, and has simple operation and convenient use.

Description

Geological prospecting drilling hollow drilling tool coal taking device

Technical Field

The utility model relates to a coal taking device, in particular to a coal taking device for a geological prospecting drilling hole core drilling tool.

Background

Before coal seam excavation, coal sampling is carried out on the coal seam in an excavation area, and the original gas content, the original gas pressure and the like of the coal seam in front of excavation are measured so as to prevent the occurrence of coal uncovering accidents by mistake; the process of geological advanced coal sample acquisition of mine gas comprises the steps of firstly adopting a powder discharging method, drilling by using a drill bit matched with a guide device, setting a sleeve, installing an orifice blowout preventer, drilling by using the drill bit, changing the drill bit by pulling a rod after coal is seen, changing the method into air powder discharging, and blowing out coal powder at the bottom of a hole through a gap between the drill rod and the wall of the hole by using air pressure to obtain the coal sample; however, for the areas where the coal seam is soft and the pore wall cracks develop, crack water is often introduced into the pores, and the soft coal powder is often subjected to the crack water in the outward moving process under the action of wind pressure, so that coal clusters and coal slime are easily formed, which leads to the problem that coal samples cannot be obtained after drilling and pore forming, thus being labor-consuming and time-consuming and failing to obtain gas geological data.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the coal fetching device of the geological prospecting drilling hollow drilling tool overcomes the defects of the prior art, is convenient to operate and is simple to use.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

the utility model provides a geology forestope drilling core drilling tool coal taking device, is including getting the core drill bit and storing up the coal sleeve pipe, get the core drill bit with it all is the hollow structure of upper and lower open-ended to store up the coal sleeve pipe, it is connected with the drilling rod to store up the sheathed tube upper end of coal, the lower extreme with it connects to get the core drill bit, just store up the sheathed tube central line of coal with the central line of getting the core drill bit is on same straight line, it is provided with a toper section of thick bamboo to store up the coal sleeve pipe, the central line of a toper section of thick bamboo with it is on same straight line to store up the sheathed tube central line of coal, toper section of thick bamboo outer wall with it stores up the coal space to store up to form between the coal sleeve pipe inner wall.

The upper end and the lower end of the conical cylinder are both of open structures, and the bottom of the conical cylinder is fixed to the lower end of the inner portion of the coal storage sleeve through a first fixing ring.

Further, the bottom of the conical cylinder is arranged on the upper end face of the first fixing ring.

First solid fixed ring's external diameter with store up the sheathed tube internal diameter phase-match of coal, first solid fixed ring's outer wall with store up and can the relative slip between the sheathed tube inner wall of coal, but not have the gap, first solid fixed ring sets up store up the sheathed tube inside lower extreme of coal, be provided with first bolt hole on the first solid fixed ring lateral wall, store up on the sheathed tube lateral wall of coal with first solid fixed ring corresponding department be provided with first bolt hole is corresponding runs through store up the second bolt hole of the sheathed tube lateral wall of coal, store up the coal sleeve pipe and utilize first countersunk head bolt to pass through first bolt hole with the second bolt hole with first solid fixed ring links together.

In addition, the bottom of a toper section of thick bamboo can also be fixed through the solid fixed ring of second store up sheathed tube inside lower extreme, and this moment a toper section of thick bamboo comprises four at least arc blades that the size equals, every the bottom of arc blade all with the articulated connection of the up end of the solid fixed ring of second, every the top of arc blade all points to store up sheathed tube central line of coal, and with store up sheathed tube central line of coal on same straight line, and every in close contact with between the arc blade forms an up end and seals, lower terminal surface open-ended toper section of thick bamboo.

The solid fixed ring's of second external diameter with store up the sheathed tube internal diameter phase-match of coal, the solid fixed ring's of second outer wall with store up and can the relative slip between the sheathed tube inner wall of coal, but not have the gap, the solid fixed ring setting of second is in store up the sheathed tube inside lower extreme of coal, be provided with the third bolt hole on the solid fixed ring lateral wall of second, store up on the sheathed tube lateral wall of coal with the solid fixed ring corresponding department of second be provided with the corresponding running through of third bolt hole store up the second bolt hole of the sheathed tube lateral wall of coal, store up the coal sleeve pipe and utilize first countersunk head bolt to pass through the second bolt hole with the third bolt hole with the solid fixed ring of second links together.

For the conical cylinder composed of a plurality of arc-shaped blades, a third fixing ring is further arranged at the position above the second fixing ring in the coal storage sleeve, a fourth bolt hole and a through hole penetrating through the side wall of the third fixing ring are formed in the third fixing ring, the through hole is oriented to the circle center of the third fixing ring, a fifth bolt hole penetrating through the side wall of the coal storage sleeve corresponding to the fourth bolt hole is formed in the side wall of the coal storage sleeve corresponding to the third fixing ring, and the coal storage sleeve is connected with the third fixing ring through the fourth bolt hole and the fifth bolt hole.

The through holes correspond to the arc-shaped blades one to one, elastic pieces are arranged in the through holes, one ends of the elastic pieces are fixed in the through holes, and the other ends of the elastic pieces extend out of the through holes and then are connected with the arc-shaped blades.

The elastic part comprises a hollow limiting rod, a compression spring and a T-shaped guide rod, one end of the hollow limiting rod is of an open structure, the other end of the hollow limiting rod is provided with a baffle plate, the baffle is provided with a through hole, one end of the compression spring is connected with the sealing plate, the other end of the compression spring is connected with the wide surface of the T-shaped guide rod, the narrow surface of the T-shaped guide rod penetrates in from the open end of the hollow limiting rod and penetrates out from the through hole, the size of the wide surface of the T-shaped guide rod is larger than that of the through hole, therefore, the wide surface of the T-shaped guide rod is left in the hollow limiting rod, the size of the compression spring is matched with the size direction in the hollow limiting rod, so that the compression spring is left in the hollow limiting rod, the size of the sealing plate is larger than that of the opening end of the hollow limiting rod, therefore, the sealing plate is left outside the hollow limiting rod, the sealing plate and the hollow limiting rod are fixed together through the bolts, and the T-shaped guide rod can slide back and forth in the through hole.

The through hole comprises three parts, namely a sealing plate hole, a limiting rod hole and a guide rod hole, the sealing plate hole, the limiting rod hole and the guide rod hole are integrated, the guide rod hole is arranged on the upper surface of the third fixing ring facing to the ring center of the third fixing ring, the T-shaped guide rod is connected with the arc-shaped plate after being worn out, the T-shaped guide rod can slide in the guide rod hole back and forth, the sealing plate hole is arranged on one side, deviating from the ring center of the third fixing ring, the sealing plate is fixed in the sealing plate hole through a third countersunk head bolt, and the limiting rod hole is located between the sealing plate hole and the guide rod hole and used for placing a hollow limiting rod.

And a limiting groove is formed in the position, corresponding to the T-shaped guide rod, of each arc-shaped blade, one side, penetrating out of the guide rod hole, of the T-shaped guide rod is connected with the limiting groove, and at the moment, the compression spring is in a micro-compression state, so that each arc-shaped blade keeps a conical shape in a micro-pressure state, and the upper part of the conical cylinder is closed.

Along with the propulsion of the drill bit, coal is continuously extruded from the lower end of the coring drill bit to the coal storage sleeve, under the action of more and more coal pressure, the coal pressure is larger than the micro pressure of the compression spring, so that the upper part of the conical barrel is opened, the coal enters the coal storage sleeve, at the moment, the compression spring is in a strong compression state, after the coal storage sleeve is filled, the drill rod is upwards pulled out, in the process of upwards pulling out the drill rod, the extrusion force of the lower part of the conical barrel disappears, under the action of the compression spring, all the arc-shaped blades are closed towards the central line of the conical barrel until the conical barrel with the closed upper part is formed, at the moment, the lower part of the coal storage sleeve is sealed, the coal in the coal storage sleeve is reserved in the coal storage sleeve, and a coal sample is extracted along with the withdrawal of the drill rod.

The utility model has the following positive beneficial effects:

the conical barrel is arranged in the coal storage sleeve through the fixing ring, so that the coal storage sleeve is simple in structure and convenient to use, and can be accurately processed according to the coal taking amount and the size of a drilled hole; the coal sampling device disclosed by the utility model can be used for directly drilling a hole in a coal bed to take coal without using wind pressure or being influenced by fracture water, and after the coal is taken, a coal sample is retained in the coal storage sleeve and is not contacted with the inside and the outside of the hole before a drill rod reaches the ground.

Drawings

FIG. 1 is a schematic structural diagram of a device for taking coal from a core drill of a geological prospecting borehole according to the utility model;

FIG. 2 is a schematic structural view of a coal storage casing according to example 1 of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of the first retaining ring of FIG. 2;

FIG. 5 is a schematic structural view of a coal storage casing pipe in example 2 of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic view of the second retaining ring of FIG. 5;

FIG. 8 is a schematic view of the third retaining ring of FIG. 5;

FIG. 9 is a schematic view showing the structure of an elastic member in example 2 of the present invention;

FIG. 10 is a schematic view showing the structure of the elastic member after being placed in the through hole in example 2 of the present invention;

fig. 11 is a schematic structural view of a cambered vane in embodiment 2 of the utility model.

Detailed Description

The utility model will be further explained and explained with reference to the drawings and the specific embodiments:

referring to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, in which: 1-core drill bit, 2-coal storage sleeve, 3-conical cylinder, 4-coal storage space, 5-first fixing ring, 6-first bolt hole, 7-first countersunk head bolt, 8-second fixing ring, 9-arc blade, 10-third bolt hole, 11-third fixing ring, 12-fourth bolt hole, 13-drill rod, 14-second countersunk head bolt, 15-hollow limiting rod, 16-compression spring, 17-T type guide rod, 18-baffle, 19-sealing plate, 20-guide rod hole, 21-limiting rod hole, 22-sealing plate hole, 23-third countersunk head bolt and 24-limiting groove.

Example 1: the utility model provides a geological prospecting drilling hollow core drilling tool coal device, including coring bit 1 and storage coal sleeve pipe 2, coring bit 1 and storage coal sleeve pipe 2 all are the hollow structure of upper and lower open-ended formula, the upper end and the lower extreme of storage coal sleeve pipe 2 all are provided with the external screw thread, its upper end is through external screw thread and 13 threaded connection of drilling rod, the lower extreme passes through external screw thread and 1 threaded connection of coring bit, and the central line of storing up coal sleeve pipe 2 and the central line of coring bit 1 are on same straight line, be provided with a toper section of thick bamboo 3 in the storage coal sleeve pipe 2, the central line of toper section of thick bamboo 3 and the central line of storing up coal sleeve pipe 2 are on same straight line, form between 3 outer walls of toper section of thick bamboo and the storage coal sleeve pipe 2 inner walls and store up coal space 4.

The upper end and the lower end of the conical cylinder 3 are both of an open structure, and the bottom of the conical cylinder 3 is arranged on the upper end face of the first fixing ring 5.

First solid fixed ring 5's external diameter and coal storage sleeve pipe 2's internal diameter phase-match, can relative slip between first solid fixed ring 5's outer wall and the inner wall of coal storage sleeve pipe 2, but not the gap, first solid fixed ring 5 sets up at coal storage sleeve pipe 2's inside lower extreme, be provided with first bolt hole 6 on the 5 lateral walls of first solid fixed ring, be provided with the second bolt hole that runs through coal storage sleeve pipe 2 lateral wall corresponding with first bolt hole 6 with the corresponding department of first solid fixed ring 5 on coal storage sleeve pipe 2's the lateral wall, coal storage sleeve pipe 2 utilizes first countersunk head bolt 7 to link together through first bolt hole 6 and second bolt hole and first solid fixed ring 5.

When using, utilize 13 drill bits of drilling rod to creep into earlier, after reaching the coal seam, take out drill rod 13, unload the drill bit, install this device, this device gets into drilling along with drill rod 13, when arriving the coal seam, get core drill bit 1 and cut the coal body fast, the coal body after not cutting begins to store up coal sleeve 2 extrusion to the lower extreme of core drill bit 1, get into through the opening on 3 upper portions of a toper section of thick bamboo and store up coal sleeve 2, store up the coal in the coal sleeve 2 and remain in storing up coal space 4 in the coal sleeve 2, after accomplishing the sample, along with the withdrawal of drilling rod 13, the coal sample is extracted.

Example 2: the utility model provides a geological prospecting drilling hollow core drilling tool coal device, including coring bit 1 and storage coal sleeve pipe 2, coring bit 1 and storage coal sleeve pipe 2 all are the hollow structure of upper and lower open-ended formula, the upper end and the lower extreme of storage coal sleeve pipe 2 all are provided with the external screw thread, its upper end is through external screw thread and 13 threaded connection of drilling rod, the lower extreme passes through external screw thread and 1 threaded connection of coring bit, and the central line of storing up coal sleeve pipe 2 and the central line of coring bit 1 are on same straight line, be provided with a toper section of thick bamboo 3 in the storage coal sleeve pipe 2, the central line of toper section of thick bamboo 3 and the central line of storing up coal sleeve pipe 2 are on same straight line, form between 3 outer walls of toper section of thick bamboo and the storage coal sleeve pipe 2 inner walls and store up coal space 4.

The bottom of a toper section of thick bamboo 3 is passed through the solid fixed ring 8 of second and is fixed at the inside lower extreme of storing up coal sleeve pipe 2, and toper section of thick bamboo 3 this moment comprises four arc blade 9 that the size equals, every arc blade 9's bottom all is connected with the articulated up end of the solid fixed ring 8 of second, the top of every arc blade 9 all points to the central line of storing up coal sleeve pipe 2, and with the central line of storing up coal sleeve pipe 2 on same straight line, and in close contact with between every arc blade 9, it seals to form an up end, lower terminal surface open-ended toper section of thick bamboo 3.

The solid fixed ring 8's of second external diameter and the internal diameter phase-match of coal storage sleeve pipe 2, can relative slip between the solid fixed ring 8's of second outer wall and the inner wall of coal storage sleeve pipe 2, but there is not the gap, the solid fixed ring 8 of second sets up the inside lower extreme at coal storage sleeve pipe 2, be provided with third bolt hole 10 on the solid fixed ring 8 lateral wall of second, be provided with the second bolt hole that runs through coal storage sleeve pipe 2 lateral wall corresponding with the solid fixed ring 8 department of second on coal storage sleeve pipe 2's the lateral wall with third bolt hole 10, coal storage sleeve pipe 2 utilizes first countersunk head bolt 7 to link together through second bolt hole and third bolt hole 10 and the solid fixed ring 8 of second.

For the conical cylinder 3 composed of a plurality of arc-shaped blades 9, a third fixing ring 11 is further arranged at the position, located above the second fixing ring 8, inside the coal storage sleeve 2, a fourth bolt hole 12 and a through hole 13 penetrating through the side wall of the third fixing ring 11 are arranged on the third fixing ring 11, the through hole 13 points to the circle center of the third fixing ring 11, a fifth bolt hole corresponding to the fourth bolt hole 12 and penetrating through the side wall of the coal storage sleeve 2 is arranged at the position, corresponding to the third fixing ring 11, on the side wall of the coal storage sleeve 2, and the coal storage sleeve 2 is connected with the third fixing ring 11 through the fourth bolt hole 12 and the fifth bolt hole by utilizing a second countersunk head bolt 14.

The passing holes 13 correspond to the arc-shaped blades 9 one by one, elastic pieces are arranged in the passing holes 13, one ends of the elastic pieces are fixed in the passing holes 13, and the other ends of the elastic pieces extend out of the passing holes 13 and then are connected with the arc-shaped blades 9.

The elastic part comprises a hollow limiting rod 15, a compression spring 16 and a T-shaped guide rod 17, one end of the hollow limiting rod 15 is of an open structure, the other end of the hollow limiting rod 15 is provided with a baffle 18, a through hole is formed in the baffle 18, the baffle 18 and the hollow limiting rod 15 are of an integrated structure, one end of the compression spring 16 is connected with a sealing plate 19, the other end of the compression spring is connected with a wide surface of the T-shaped guide rod 17, a narrow surface of the T-shaped guide rod 17 penetrates into the open end of the hollow limiting rod 15 and penetrates out of the through hole, the size of the wide surface of the T-shaped guide rod 17 is larger than that of the through hole, so that the wide surface of the T-shaped guide rod 17 is left in the hollow limiting rod 15, the size of the compression spring 16 is matched with that in the hollow limiting rod 15, so that the compression spring 16 is left in the hollow limiting rod 15, the size of the sealing plate 19 is larger than that of the open end of the hollow limiting rod 15, so that the sealing plate 19 is left outside the hollow limiting rod 15, and the sealing plate 19 and the hollow limiting rod 15 are fixed together by a bolt (not shown in the figure), the T-shaped guide bar 17 can slide back and forth in the through hole.

The through hole 13 comprises three parts, namely a sealing plate hole 22, a limiting rod hole 21 and a guide rod hole 20, wherein the sealing plate hole 22, the limiting rod hole 21 and the guide rod hole 20 are integrated, the guide rod hole 20 is arranged on one side, facing to the ring center of the third fixing ring 11, the size of the guide rod hole 20 is matched with that of the T-shaped guide rod 17 and used for connecting the T-shaped guide rod 17 with an arc-shaped plate after penetrating out, the T-shaped guide rod 17 can slide back and forth in the guide rod hole 20, the sealing plate hole 22 is arranged on one side, away from the ring center of the third fixing ring 11, the size of the sealing plate hole 22 is matched with that of the sealing plate 19 and used for fixing the sealing plate 19 in the sealing plate hole 22 through a third countersunk head bolt 23, the outer end face of the sealing plate 19 and the outer end face of the third fixing ring 11 are on the same arc-shaped face, the limiting rod hole 21 is arranged between the sealing plate hole 22 and the guide rod hole 20, and the size of the limiting rod hole 21 is matched with that of the limiting rod, for placing the hollow stop rod 15.

A limiting groove 24 is formed in the position, corresponding to the T-shaped guide rod 17, of each arc-shaped blade 9, one side, penetrating out of the guide rod hole 20, of the T-shaped guide rod 17 is connected with the limiting groove 24, and at the moment, the compression spring 16 is in a micro-compression state, so that each arc-shaped blade 9 keeps a conical shape in a micro-pressure state, and the upper portion of the conical cylinder 3 is closed.

When the device is used, firstly, a drill rod 13 is utilized for drilling, after a coal bed is reached, the drill rod 13 is taken out, the drill bit is removed, the device is installed, the device enters a drill hole along with the drill rod 13, when the device reaches the coal bed, the core drill bit 1 rapidly cuts a coal body, the coal body which is not cut starts to be extruded to the coal storage sleeve 2 from the lower end of the core drill bit 1, under the action of more and more coal pressure, the coal pressure is larger than the micro pressure of the compression spring 16, so that the upper part of the conical barrel 3 is opened, the coal enters the coal storage sleeve 2, at the moment, the compression spring 16 is in a strong compression state, after the coal storage sleeve 2 is filled, the drill rod 13 is upwards pulled out, in the process of upwards pulling out the drill rod 13, the extrusion force of the lower part of the conical barrel 3 disappears, under the action of the compression spring 16, all the arc-shaped blades 9 are closed to the central line of the conical barrel 3 until the conical barrel 3 with the upper part closed is formed, at this time, the lower part of the coal storage sleeve 2 is sealed, coal in the coal storage sleeve 2 is retained in the coal storage sleeve 2, and a coal sample is extracted while the drill rod 13 is withdrawn.

The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (7)

1. The utility model provides a geology forestope drilling core drilling tool coal taking device, is including getting core bit and storing up the coal sleeve pipe, get core bit with it all is the hollow structure of upper and lower open type to store up the coal sleeve pipe, characterized by: store up coal sheathed tube upper end and drilling rod and be connected, the lower extreme with it connects to get the core bit, just store up coal sheathed tube central line with the central line of getting the core bit is on same straight line, store up the intraductal toper section of thick bamboo that is provided with of coal sleeve, the central line of toper section of thick bamboo with store up coal sheathed tube central line on same straight line, toper section of thick bamboo outer wall with it stores up the coal space to form between the intraductal wall of coal sleeve.

2. The device of claim 1, wherein the drill core drilling tool is a drill core drilling tool, and the device comprises: the upper and lower both ends of a toper section of thick bamboo all are open type structure, the bottom of a toper section of thick bamboo is fixed through first solid fixed ring store up coal sheathed tube inside lower extreme, the bottom of a toper section of thick bamboo sets up on the up end of first solid fixed ring.

3. The device of claim 2, wherein the drill core drilling tool is a drill core drilling tool, the device comprising: first solid fixed ring's external diameter with store up the sheathed tube internal diameter phase-match of coal, first solid fixed ring sets up store up the sheathed tube inside lower extreme of coal, be provided with first bolt hole on the first fixed ring lateral wall, be provided with the second bolt hole on storing up the sheathed tube lateral wall of coal, it utilizes first countersunk head bolt to pass through to store up the coal sleeve first bolt hole with the second bolt hole with first solid fixed ring links together.

4. The device of claim 1, wherein the drill core drilling tool is a drill core drilling tool, and the device comprises: the bottom of a toper section of thick bamboo is fixed through the solid fixed ring of second store up sheathed tube inside lower extreme, a toper section of thick bamboo comprises four at least arc blades that the size equals, every arc blade's bottom all with the solid fixed ring's of second up end is articulated to be connected, every arc blade's top is all directional store up sheathed tube central line of coal, and with store up sheathed tube central line of coal on same straight line, and every in close contact with between the arc blade forms an up end and seals, lower terminal surface open-ended toper section of thick bamboo.

5. The device of claim 4, wherein the drill core drilling tool is a drill core drilling tool, the device comprising: the solid fixed ring's of second external diameter with store up the sheathed tube internal diameter phase-match of coal, the solid fixed ring of second sets up store up sheathed tube inside lower extreme of coal, be provided with the third bolt hole on the second fixed ring lateral wall, be provided with the second bolt hole on the sheathed tube lateral wall of storing up coal, it utilizes first countersunk head bolt to pass through to store up the coal sleeve the second bolt hole with the third bolt hole with the solid fixed ring of second links together.

6. The device of claim 5, wherein: the coal storage sleeve is characterized in that a third fixing ring is further arranged inside the coal storage sleeve, a fourth bolt hole and a through hole are formed in the third fixing ring, a fifth bolt hole is formed in the side wall of the coal storage sleeve corresponding to the third fixing ring, and the coal storage sleeve is connected with the third fixing ring through the fourth bolt hole and the fifth bolt hole by means of a second countersunk head bolt.

7. The device of claim 6, wherein: the through holes correspond to the arc-shaped blades one to one, elastic pieces are arranged in the through holes, one ends of the elastic pieces are fixed in the through holes, and the other ends of the elastic pieces extend out of the through holes and then are connected with the arc-shaped blades.

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