1. A double slag discharge function drilling tool is characterized by comprising:

the water outlet holes are communicated with the first channel and are arranged at intervals in the length direction of the drill bit;

the drill rod comprises a rod body and a helical blade, a second channel penetrating through the rod body along the length direction of the rod body is arranged in the rod body, the second channel is communicated with the first channel, and the helical blade is connected with the outer peripheral surface of the rod body and extends spirally along the length direction of the rod body;

the front end of the driving shaft is detachably connected with the other end of the rod body, a third channel penetrating through the driving shaft along the length direction of the driving shaft is arranged inside the driving shaft, the third channel is communicated with the second channel, and the driving shaft is suitable for being connected with external power equipment.

2. The dual row slag function drilling tool as claimed in claim 1, wherein the number of the drill rods is plural, the plural drill rods are connected in sequence, a front end of the drill rod positioned at the foremost end is detachably connected to a rear end of the drill bit, and a rear end of the drill rod positioned at the rearmost end is detachably connected to a front end of the driving shaft.

3. The dual slag discharge function drill as recited in claim 1, wherein the cross-sectional areas of said first passage, said second passage and said third passage are the same.

4. The dual row slag function drilling tool as recited in claim 1, further comprising a pilot bit having a rear end detachably connected to a front end of the drill bit, the pilot bit having a cross-sectional area smaller than that of the drill bit.

5. The dual row slag function drilling tool of claim 4, further comprising a first connector disposed at a forward end of the drill bit, the first connector being removably connectable to the pilot drill.

6. The dual row slag function drilling tool of claim 5, wherein the first connector is connected to the pilot drill by a threaded connection.

7. The dual row slag function drilling tool as claimed in claim 1, further comprising a first connector and a second connector, wherein the first connector is disposed at the rear end of the drill bit and the other end of the rod body, the second connector is disposed at one end of the rod body and one end of the driving shaft, the first connector is provided with a groove, and the second connector can be fitted in the groove.

8. The dual-slag-discharge drilling tool as claimed in claim 7, further comprising a fixing pin, wherein a first through hole is formed in the first connector, a fixing groove is formed in the second connector, and the fixing pin passes through the first through hole and then is arranged in the fixing groove to connect the first connector with the second connector.

9. The dual slag discharge function drilling tool as claimed in claim 8, wherein the fixing pins, the first through holes and the fixing grooves are all plural, the fixing grooves correspond to the first through holes one to one, and the number of the fixing pins is the same as the number of the first through holes and the fixing grooves.

10. The dual slag discharge function drilling tool as recited in any one of claims 1 to 9, further comprising a second connecting member provided at a rear end of the driving shaft, the second connecting member being adapted to be connected to an external water supply apparatus.

Background

The slag discharge method for the large-diameter drilling construction can be used for hydraulic slag discharge, and is realized by using a water drill through multi-stage hole expansion, wherein the water drill is generally an outer flat drill rod connected by screw threads, and mainly discharges slag by means of high-pressure water; the spiral drill rod can be used for self-deslagging, the large spiral blade is mainly used for naturally deslagging, and the two modes have certain limitation.

Disclosure of Invention

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

in practical application, the hydraulic slag removal process needs large water supply and water discharge, has strict requirements on water supply and water discharge conditions of construction points, is suitable for construction of fixed drilling sites, and is not suitable for sites with short drilling length and needing frequent drilling movement; meanwhile, the self-weight of water influences, when a hole is drilled at a negative angle, a large amount of water and coal cinder are accumulated in the hole all the time, the deslagging capability is limited to a certain degree, and in the process of the large-diameter drilling construction of the coal seam, the spiral self-deslagging process is easy to cause hole collapse in the hole due to large hole forming diameter to block a deslagging channel of a drill rod, and the drill rod is not driven by other external force only by the thrust of a blade of the spiral drill rod once the drill rod is pressed and clamped, so that the drilling tool is lost easily.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides the double-row slag function drilling tool which is simple in structure, high in construction efficiency and strong in applicability.

The double-row slag function drilling tool comprises a drilling bit, a drilling rod and a driving shaft, wherein a first channel penetrating through the drilling bit along the length direction of the drilling bit is arranged inside the drilling bit, a plurality of water outlet holes are formed in the drilling bit, the water outlet holes are communicated with the first channel and are arranged at intervals along the length direction of the drilling bit, one end of the drilling rod is detachably connected with the rear end of the drilling bit, the drilling rod comprises a rod body and a helical blade, a second channel penetrating through the rod body along the length direction of the rod body is arranged inside the rod body, the second channel is communicated with the first channel, the helical blade is connected with the outer peripheral surface of the rod body and extends spirally along the length direction of the rod body, the front end of the driving shaft is detachably connected with the other end of the rod body, a third channel penetrating through the driving shaft along the length direction of the driving shaft is arranged inside the driving shaft, the third channel is communicated with the second channel, and the driving shaft is suitable for being connected with external power equipment.

The double-deslagging drill provided by the embodiment of the invention has the characteristics of simple structure, high construction efficiency and strong applicability when drilling construction is carried out.

In some embodiments, the number of the drill rods is plural, the plurality of drill rods are connected in sequence, the front end of the drill rod positioned at the frontmost end is detachably connected with the rear end of the drill bit, and the rear end of the drill rod positioned at the rearmost end is detachably connected with the front end of the driving shaft.

In some embodiments, the cross-sectional areas of the first channel, the second channel, and the third channel are the same.

In some embodiments, the dual row function drill further comprises a pilot drill having a rear end detachably connected to the front end of the drill bit, the pilot drill having a cross-sectional area smaller than the cross-sectional area of the drill bit.

In some embodiments, the dual slag discharge function drilling tool further comprises a first connecting member provided at a front end of the drill bit, the first connecting member being detachably connected to the pilot drill.

In some embodiments, the first connector is connected to the pilot drill by a threaded connection.

In some embodiments, the double-row slag function drilling tool further comprises a first connector and a second connector, the first connector is arranged at the rear end of the drill bit and the other end of the rod body, the second connector is arranged at one end of the rod body and one end of the driving shaft, the first connector is provided with a groove, and the second connector can be matched in the groove.

In some embodiments, the double-row slag function drilling tool further comprises a fixing pin, a first through hole is formed in the first connector, a fixing groove is formed in the second connector, and the fixing pin penetrates through the first through hole and then is arranged in the fixing groove to connect the first connector and the second connector.

In some embodiments, the number of the fixing pins, the number of the first through holes, and the number of the fixing grooves are all plural, the plural fixing grooves correspond to the plural first through holes one to one, and the number of the fixing pins is the same as the number of the first through holes and the number of the fixing grooves.

In some embodiments, the double-deslagging-function drilling tool further comprises a second connecting piece, wherein the second connecting piece is arranged at the rear end of the driving shaft and is suitable for being connected with an external water supply device.

Drawings

Fig. 1 is a schematic structural view of a dual slag discharge function drilling tool according to an embodiment of the present invention.

Fig. 2 is a schematic view of the construction of the drill bit of fig. 1.

Fig. 3 is a schematic view of the construction of the drill rod of fig. 1.

Fig. 4 is a schematic view of the structure of the driving shaft of fig. 1.

Reference numerals:

the drill bit 1, the first channel 11, the apopore 12, the drilling rod 2, the body of rod 21, the second channel 211, helical blade 22, driving shaft 3, third channel 31, the direction bores 4, first connector 5, first connector 6, recess 61, first through-hole 62, second connector 7, fixed slot 71, fixed pin 8, second connector 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A dual slag discharge function drilling tool according to an embodiment of the present invention will be described with reference to fig. 1 to 4.

The double-row slag function drilling tool comprises a drill bit 1, a drill rod 2 and a driving shaft 3.

The inside first passageway 11 that runs through drill bit 1 along drill bit 1's length direction that is equipped with of drill bit 1, is equipped with a plurality of apopores 12 on the drill bit 1, and a plurality of apopores 12 and 11 intercommunications of first passageway and at drill bit 1's length direction interval arrangement.

As shown in fig. 1 and 2, the drill bit 1 is spindle-shaped, a first channel 11 penetrating through the drill bit 1 in the left-right direction is disposed at the center of the drill bit 1, the first channel 11 is used for introducing water for slag removal, the drill bit 1 comprises scrapers and a core rod, a plurality of water outlets 12 communicated with the first channel 11 are disposed on the core rod between two adjacent scrapers, the plurality of water outlets 12 are arranged at intervals in the left-right direction, and when water for slag removal is introduced into the first channel 12, the water outlets 12 discharge the water for slag removal from the position of the drill bit 1, so as to effectively remove slag.

One end of the drill rod 2 is detachably connected with the rear end of the drill bit 1, the drill rod 2 comprises a rod body 21 and a helical blade 22, a second channel 211 penetrating through the rod body 21 along the length direction of the rod body 21 is arranged inside the rod body 21, the second channel 211 is communicated with the first channel 11, and the helical blade 22 is connected with the outer peripheral surface of the rod body 21 and extends spirally along the length direction of the rod body 21.

As shown in fig. 1 and 3, the helical blade 22 is connected to the outer peripheral surface of the rod body 21 and extends in the left-right direction, the diameter of the helical blade 22 is the same as the diameter of the drilled hole, and meanwhile, the helical blade 22 can be replaced according to the requirement of the diameter of the drilled hole to adapt to different working environments, the right end of the drill bit 1 is the rear end, the left end of the drill rod 2 is detachably connected to the right end of the drill bit 1, the connection mode includes but is not limited to pin hole insertion and screw thread connection, a second channel 211 penetrating through the rod body 21 in the left-right direction is arranged inside the rod body 21, the second channel 211 is communicated with the first channel 11, the cross-sectional area of the second channel 211 is the same as that of the first channel 11, so that the slag water injected into the drill bit 2 can pass through more quickly.

The front end of the driving shaft 3 is detachably connected with the other end of the rod body 21, a third channel 31 penetrating through the driving shaft 3 along the length direction of the driving shaft 3 is arranged inside the driving shaft 3, the third channel 31 is communicated with the second channel 211, and the driving shaft 3 is suitable for being connected with external power equipment.

As shown in fig. 1 and 4, the front end of the driving shaft 3 is a left end, the left end of the driving shaft 3 is detachably connected with the right end of the rod body 21, the connection mode includes but is not limited to pin hole insertion and screw connection, a third channel 31 penetrating through the driving shaft 3 along the left and right direction is arranged inside the driving shaft 3, the third channel 31 is communicated with the second channel 211, the cross-sectional area of the third channel 31 is the same as that of the second channel 211, so that the slag discharge water injected to the drill bit 2 can pass through more quickly, a boss is arranged in the middle of the driving shaft 3 and used for being connected with external power equipment, and the external power equipment can provide forward and rotary power for the drill bit 2 and the drill bit 1.

The double-deslagging drill provided by the embodiment of the invention has the characteristics of simple structure, high construction efficiency and strong applicability when drilling construction is carried out.

In some embodiments, the number of the drill rods 2 is plural, the plural drill rods 2 are connected in series, the front end of the drill rod 2 located at the foremost end is detachably connected to the rear end of the drill bit 1, and the rear end of the drill rod 2 located at the rearmost end is detachably connected to the front end of the driving shaft 3.

As shown in figure 1, a plurality of drill rods 2 are sequentially connected in the front and back direction along the left-right direction, the rear end of a drill bit 1 is connected with the left end of the drill rod 2 at the leftmost end, the front end of a driving shaft 3 is connected with the right end of the drill rod 2 at the rightmost end, the length of the drill rod 2 can be changed according to the actual requirement of the operation environment by arranging the plurality of drill rods 2, and the operation efficiency is improved.

In some embodiments, the cross-sectional areas of the first channel 11, the second channel 211, and the third channel 31 are the same.

As shown in fig. 1, in the left-right direction, the first channel 11, the second channel 211 and the third channel 31 are sequentially communicated, the slag discharging water sequentially passes through the third channel 31, the second channel 211 and the first channel 11 from right to left, and the cross-sectional areas of the first channel 11, the second channel 211 and the third channel 31 are the same, so that the passing efficiency of the slag discharging water is improved, and the slag discharging efficiency is indirectly improved.

In some embodiments, the double row slag function drilling tool further includes a pilot bit 4, a rear end of the pilot bit 4 is detachably connected to a front end of the drill bit 1, and a cross-sectional area of the pilot bit 4 is smaller than that of the drill bit 1.

As shown in fig. 1, a pilot drill 4 is further connected to the left side of the drill bit 1, the cross-sectional area of the pilot drill 4 is smaller than that of the drill bit 1, when drilling construction is performed, the drill bit 1 drills and cuts coal along the track of the pilot drill 4 with a formed hole under the traction of the pilot drill 4, and coal slag is conveyed out of the hole through a large-diameter helical blade 22 welded on the drill rod 2 to achieve spiral slag removal.

In some embodiments, the double slag discharge function drilling tool further includes a first connector 5, the first connector 5 is provided at a front end of the drill bit 1, and the first connector 5 is detachably connected to the pilot drill 4.

As shown in fig. 1 and 2, a first connecting piece 5 is further arranged at the left end of the drill bit 1, the right end of the first connecting piece 5 is connected with the left end of the drill bit 1, and the guide drill 4 is detachably connected with the first connecting piece 5, so that the guide drill 4 can be replaced, and the service life of the drilling tool is prolonged.

In some embodiments, the first connector 5 is connected to the pilot drill 4 by a threaded connection. The left end of first connecting piece 5 is equipped with the external screw thread, and the right-hand member of direction brill 4 is equipped with the spread groove, is equipped with the internal thread that matches with the external screw thread in the spread groove, and first connecting piece 5 links together through external screw thread and internal screw thread cooperation with direction brill 4, and can understand, first connecting piece 5 and direction brill 4 connected mode include but not limited to screw thread connection, threaded connection, buckle connection, flange joint.

In some embodiments, the dual slag discharge function drilling tool further includes a first connector 6 and a second connector 7, the first connector 6 is provided at the rear end of the drill bit 1 and the other end of the rod body 21, the second connector 7 is provided at one end of the rod body 21 and one end of the driving shaft 3, the first connector 6 is provided with a groove 61, and the second connector 7 can be fitted in the groove 61.

As shown in fig. 1, the right end of the drill bit 1 and the right end of the rod body 21 are both provided with a first connector 6, the left side of the first connector 6 is connected with the right end of the drill bit 1 and the right end of the rod body 21, the right side of the first connector 6 is provided with a groove 61, the left end of the rod body 21 and the left end of the driving shaft 3 are both provided with a second connector 7, the cross-sectional area of the second connector 7 is not larger than that of the groove 61, and the second connector 7 can be matched in the groove 61, so that the first connector 6 is connected with the second connector 7.

In some embodiments, the dual slag discharge function drilling tool further comprises a fixing pin 8, the first connecting head 6 is provided with a first through hole 62, the second connecting head 7 is provided with a fixing groove 71, and the fixing pin 8 passes through the first through hole 62 and then is disposed in the fixing groove 71 to connect the first connecting head 6 and the second connecting head 7.

As shown in fig. 2 to 4, the first through holes 62 are spaced apart from each other on the outer circumferential surface of the first connector 6, the second connector 7 is provided with fixing grooves 71 corresponding to the first through holes 62, the fixing grooves 71 are not communicated with the second channel 211 to ensure the sealing property when water is supplied to the second channel 211, and fixing pins 8 are provided in the first through holes 62 and the fixing grooves 71, and the fixing pins 8 connect the first connector 6 and the second connector 7 together.

In some embodiments, the number of the fixing pins 8, the first through holes 62, and the fixing grooves 71 is plural, the plurality of fixing grooves 71 corresponds to the plurality of first through holes 62 one to one, and the number of the fixing pins 8 is the same as the number of the first through holes 62 and the fixing grooves 71.

When carrying out major diameter drilling construction, the moment of torsion of rig is great, for the transmission of guaranteeing the moment of torsion and the life of drilling tool, use first connector 6 of high strength steel preparation and second connector 7, use a plurality of fixed pins 8 one-to-one to establish in a plurality of fixed slots 71 and a plurality of first through-hole 6 simultaneously, strengthen first connector 6 and second connector 7's connection, reduce because of the wearing and tearing of first connector 6 and second connector 7 or damage the drilling tool that causes and change, the life of operating efficiency and drilling tool is improved.

In some embodiments, the double slag discharge function drilling tool further comprises a second connection 9, the second connection 9 is provided at the rear end of the driving shaft 3, and the second connection 9 is adapted to be connected to an external water supply device.

As shown in fig. 1 and 4, the right end of the driving shaft 3 is further connected with a second connecting piece 9, the second connecting piece 9 is provided with a water inlet, the water inlet is communicated with the third channel 31, the second connecting piece 9 is connected with an external water supply device, and when hydraulic slag removal is performed, the external water supply device injects slag removal water into the third channel 31 through the water inlet, so that slag removal efficiency is improved.

When carrying out drilling construction, the left end of drill bit 1 links to each other with direction brill 4 through first connecting piece 5, the right-hand member of drill bit 1 connects gradually a plurality of drilling rods 2 according to the operation environment needs, the right-hand member at last drilling rod 2 is connected with driving shaft 3, the right-hand member of driving shaft 3 is connected with second connecting piece 9, when creeping into, under the traction of direction brill 4, drill bit 1 creeps into the cutting coal body along the direction brill 4 orbit of pore-forming, the cinder is carried outside the hole through welded major diameter helical blade 22 on the body of rod 21, realize the spiral and arrange sediment. When hydraulic slag removal is needed, under the condition that the existing connection is not changed, a matched water supply toilet shaft is additionally connected to the second connecting piece 9 at the right end of the driving shaft 3, after a water supply pipeline is connected, a water supply valve is opened to supply water to the third channel 31 in the driving shaft 3, the water reaches the drill bit 1 through the third channel 31, the second channel 211 and the first channel 11 in sequence, and is discharged to a position between the drilling tool and the hole wall through the water outlet hole 12, so that the hydraulic flushing and slag removal of coal slag in the hole by high-pressure water are realized.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.