Ground straight-through type roadway-penetrating drilling and dry-hole roadway-penetrating while-drilling powder taking device and using method

Abstract

The invention discloses a ground straight-through type roadway-penetrating drilling and dry hole roadway-penetrating while-drilling powder taking device and a using method, and belongs to the technical field of coal mining. The ground straight-through type roadway penetrating drilling and dry hole roadway penetrating while-drilling powder taking device comprises a drill rod, a drill bit is fixed to the bottom of the drill rod, a rock powder bin is welded and fixed to the outer portion of the drill rod, the interior of the rock powder bin is hollow, the drill rod is sleeved with the rock powder bin, and the bottom of the rock powder bin is arranged to be a conical necking opening; welding and sealing with the drill rod; the top of the rock powder bin is open; an air pump which is intermittently opened and closed is arranged outside the hole, and the air pump can inject air flow towards the bottom of the hole to lift rock powder to float upwards and enable the rock powder to enter the rock powder bin from the upper end of the rock powder bin; after the drilling operation is completed, the rock powder in the rock powder bin can be taken out by opening the cover plate, so that the problem that the rock powder returns upwards in the dry hole penetrating roadway can be effectively solved, and the efficiency of the drilling operation is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining, and particularly relates to a ground straight-through tunnel drilling dry hole tunnel powder extraction device and a use method thereof. Background Art

[0002] With the continuous advancement of coal mining technology, surface pipe shaft technology has been widely used in coal mining operations. Among them, surface direct-through tunnel drilling and dry-hole drilling technology is a key component of coal mining. However, the difficulty of rock dust return during air drilling has become a major factor restricting the development of this technology. To address this issue, the present invention proposes a surface direct-through tunnel drilling and dry-hole drilling powder recovery device and its use method to address the problem of rock dust return during coal mine pipe shaft drilling operations. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a ground-through dry-hole tunnel drilling and powder extraction device and a method for use, thereby solving the problems in the prior art.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] The ground-through dry-hole tunnel drilling and rock powder extraction device comprises a drill rod, a drill bit fixed to the bottom of the drill rod, and a rock powder bin welded and fixed to the outside of the drill rod. The rock powder bin is hollow inside and sleeved on the outside of the drill rod. The bottom of the rock powder bin is set to a conical neck and welded to the drill rod for sealing; the top of the rock powder bin is open;

[0006] An air pump with an intermittent switch is provided outside the hole. The air pump can inject air flow toward the bottom of the hole to lift the rock powder to float up and allow the rock powder to enter the rock powder bin from the upper end.

[0007] Furthermore, a material taking port is provided on the rock powder bin and is sealed by a cover plate.

[0008] Furthermore, the cover plate and the rock powder bin are fixed by means of bolts.

[0009] Furthermore, a circulation hole is provided inside the alloy drill bit and is connected to the water hole at the bottom of the alloy drill bit; an air hole is provided inside the drill rod and is connected to the circulation hole; the air flow generated by the air pump enters the alloy drill bit from the air hole of the drill rod and comes out from the water hole to reach the bottom of the hole.

[0010] Furthermore, the rock powder bin and the drill rod are fixed by welding through a plurality of connecting pieces.

[0011] Furthermore, the plurality of connectors are distributed in a circular array.

[0012] Furthermore, the inclination angle of the connecting member is 120°.

[0013] Furthermore, the diameter of the drill rod is 127 mm, and the outer diameter of the rock powder bin is 178 mm.

[0014] The method for using the above-mentioned ground-through dry-hole tunnel drilling and powder extraction while drilling device comprises the following steps:

[0015] S1, fix the alloy drill bit to the drill rod and ensure that the cover plate closes the material outlet;

[0016] S2, insert the drill rod into the hole to start drilling; at the same time, control the intermittent switch of the air pump to allow rock powder to enter from the upper end of the rock powder bin and be stored;

[0017] S3, after the drilling operation is completed, the drill rod is removed, and the cover is opened to take out the rock powder in the rock powder bin.

[0018] Beneficial effects of the present invention:

[0019] By setting a rock powder bin on the drill pipe and controlling the intermittent switch of the air pump during the dry hole through-tunnel drilling operation, air is blown intermittently to the bottom of the hole, so that the rock powder is lifted up and falls from the top of the rock powder bin into the bin for storage; this can effectively solve the problem of rock powder returning in the dry hole through-tunnel and improve the efficiency of the drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a schematic structural diagram of a ground-through tunnel drilling dry hole tunnel powder extraction device according to the present invention;

[0022] In the figure: 1-drill rod, 2-rock powder bin, 3-cover plate, 4-connecting piece, 5-alloy drill bit. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figure 1As shown, the ground straight-through tunnel drilling dry hole tunnel powder extraction device includes a drill rod 1, and an alloy drill bit 5 is fixed to the bottom of the drill rod 1. The drill rod 1 is driven by a driving device to drive the alloy drill bit 5 to feed downward and rotate to achieve drilling;

[0026] The rock powder bin 2 is welded and fixed to the outside of the drill pipe 1. The rock powder bin 2 is hollow inside and is sleeved on the outside of the drill pipe 1. The bottom of the rock powder bin 2 is set to a conical neck and is welded and sealed with the drill pipe 1; the top of the rock powder bin 2 is open; during the drilling operation, an air pump is set outside the hole to inject air into the bottom of the hole (the cruising trajectory of the air flow is shown as Figure 1 As shown by the arrow in the figure, the rock powder generated by drilling is lifted up by the air flow; by controlling the intermittent switch of the air pump (when the air pump is turned off), the floating rock powder falls and enters the rock powder bin 2 from the upper end, thereby realizing the collection and storage of the rock powder;

[0027] Moreover, in this embodiment, a circulation hole is provided inside the alloy drill bit 5, and can be communicated with the water hole at the bottom of the alloy drill bit 5; an air hole is provided inside the drill rod 1, and can be communicated with the circulation hole of the alloy drill bit 5 (the air hole and the circulation hole are kept conductive after the drill rod 1 and the alloy drill bit 5 are fixed); the air flow generated by the air pump enters the alloy drill bit 5 from the air hole of the drill rod 1, and comes out from the water hole to reach the bottom of the hole.

[0028] In this embodiment, a material taking port is opened on the rock powder bin 2, and the material taking port is blocked by a cover plate 3; the cover plate 3 and the rock powder bin 2 are detachably fixed by means of bolts; when taking powder in the later stage, the rock powder stored in the rock powder bin 2 can be smoothly taken out by removing the bolts, that is, opening the cover plate 3, thereby improving the quality of construction work and bringing great convenience to the construction work.

[0029] In this embodiment, the rock powder bin 2 and the drill rod 1 are welded and fixed by multiple connecting parts 4 (the two ends of the connecting parts 4 are respectively welded to the rock powder bin 2 and the drill rod 1), and the multiple connecting parts 4 are distributed in a circular array; and the connecting parts are made of high-strength steel plates to ensure the firmness and stability of the connection between the rock powder bin 2 and the drill rod 1.

[0030] In addition, the inclination angle of the connecting piece 4 is 120°, which can ensure that the maximum amount of rock powder lifted by air enters the rock powder bin 2 during the dry hole drilling.

[0031] In this embodiment, the diameter of the drill rod is 127 mm, and the outer diameter of the rock powder bin is 178 mm.

[0032] Example 2

[0033] In this embodiment, a method for using the surface direct-through tunnel drilling dry hole tunnel powder extraction device mentioned in Example 1 is described, including the following steps:

[0034] S1, fix the alloy drill bit 5 and the drill rod 1 (keep the air hole and the flow hole conductive), and tighten the bolts on the cover plate 3 to close the material outlet;

[0035] S2, insert the drill rod 1 into the hole, and perform drilling operations under the drive of the driving device; at the same time, control the intermittent operation of the air pump, allowing the air flow generated by the air pump to pass through the air holes of the drill rod and the flow holes of the alloy drill bit, and exit from the water hole of the alloy drill bit 5 and blow to the bottom of the hole; at this time, under the lifting effect of the air flow, the rock powder is driven to float up; by controlling the intermittent switch of the air pump, the floating rock powder falls and can enter the rock powder bin 2 from the upper end, realizing the collection and storage of the rock powder;

[0036] S3, after the drilling operation is completed, the drill rod 1 is taken out, the bolts are removed, the cover plate 3 is opened, and the rock powder in the rock powder bin 2 is taken out.

[0037] Among them, the intermittent inflation parameters of the air pump are: the air volume of the air pump is 35m 3 / min, pressure 1-5Mpa, using 2-3 air pumps at the same time, cumulative air volume 70-105m 3 / min. Pause the air pump after running the gas volume for 30-60 minutes, and restart the air pump after an interval of 30 minutes, and repeat the cycle.

[0038] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A surface-through dry-hole tunnel drilling and powder extraction device comprising a drill rod (1), a drill bit (5) being fixed at the bottom of the drill rod (1), and characterized in that: A rock powder bin (2) is welded and fixed to the outside of the drill rod (1); the rock powder bin (2) is hollow inside and sleeved outside the drill rod (1); the bottom of the rock powder bin (2) is configured to have a conical necking and is welded and sealed to the drill rod (1); the top of the rock powder bin (2) is open; An intermittently switched air pump is provided outside the hole, and the air pump can inject airflow toward the bottom of the hole to lift the rock powder to float up and allow the rock powder to enter the rock powder bin (2) from the upper end.

2. The ground-through dry-hole tunnel drilling and powder extraction device according to claim 1 is characterized in that: The rock powder bin (2) is provided with a material taking port, which is sealed by a cover plate (3).

3. The ground-through dry-hole tunnel drilling and powder extraction device according to claim 2 is characterized in that: The cover plate (3) and the rock powder bin (2) are fixed by means of bolt connection.

4. The ground-through dry-hole tunnel drilling and powder extraction device according to claim 2 is characterized in that: The alloy drill bit (5) is provided with a circulation hole inside, which is connected to the water hole at the bottom of the alloy drill bit (5); the drill rod (1) is provided with an air hole inside, which is connected to the circulation hole; the air flow generated by the air pump enters the alloy drill bit (5) from the air hole of the drill rod (1), and exits from the water hole to reach the bottom of the hole.

5. The ground-through dry-hole tunnel drilling and powder extraction device according to claim 2 is characterized in that: The rock powder bin (2) and the drill rod (1) are fixed by welding via a plurality of connecting pieces (4).

6. The ground-through dry-hole tunnel drilling and powder extraction device according to claim 2 is characterized in that: The plurality of connecting members (4) are distributed in a circumferential array.

7. The ground-through dry-hole tunnel drilling and powder extraction device according to claim 2 is characterized in that: The inclination angle of the connecting member (4) is 120°.

8. The ground-through dry-hole tunnel drilling and powder extraction device according to claim 2 is characterized in that: The diameter of the drill rod is 127 mm, and the outer diameter of the rock powder bin is 178 mm.

9. The method for using the ground-through dry-hole tunnel drilling and powder extraction while drilling device according to any one of claims 2 to 8, characterized in that: The following steps are involved: S1, fix the alloy drill bit (5) to the drill rod (1), and ensure that the cover plate (3) closes the material extraction port; S2, inserting the drill rod (1) into the hole to perform drilling operations; at the same time, controlling the intermittent switch of the air pump to allow rock powder to enter from the upper end of the rock powder bin (2) and be stored; S3, after the drilling operation is completed, the drill rod (1) is removed, and the cover plate (3) is opened to take out the rock powder in the rock powder bin (2).

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