A powder removal device for down-the-hole drilling rig

Abstract

The present invention relates to the technical field of drill rods, and in particular to a powder discharge device for a down-the-hole drill, comprising a drill, an external joint and a drill rod, wherein an adjusting mechanism is arranged inside the drill rod, a straight cut surface is arranged on the drill rod, a drill bit is arranged at one end of the drill rod, a discharge groove is arranged on the outer surface of the drill bit, a spiral powder discharge groove is arranged on the outer wall of the drill rod, the spiral powder discharge groove divides the straight cut surface into a plurality of blocking areas, the adjusting mechanism comprises a support member, a rotating member is arranged inside the support member, a sliding member is on the outer wall of the support member, a resistance member is arranged on the sliding member, an adjusting member is arranged at one end of the sliding member, and also comprises a blocking member, the present invention can transport crushed slag outwards through the spiral powder discharge groove on the outer wall of the drill rod, the spiral powder discharge groove divides the straight cut surface into a plurality of blocking areas, so that the slag transported outwards is crushed in the blocking area, and at the same time a movable adjusting member is arranged in the blocking area to further crush the slag transported through the spiral powder discharge groove, and has better powder discharge efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of drill rods, in particular to a dust removal device for a down-the-hole drill. Background Art

[0002] A drilling rig is a mechanical device that drives the drill bit to drill in any direction and obtain physical geological data during geological exploration. The main function of the drilling rig is to break the bottom rock and lower or pull out the drilling tool. As a new equipment for construction, after several years of promotion, its advantages such as light weight, high efficiency, energy saving, low noise, low pollution, and wide adaptability to formations have been recognized by more and more people. It has been widely used in construction projects. It has the functions of rotation and impact, which can destroy hard rocks through impact, thereby speeding up the construction progress.

[0003] The drill rods currently used in the industry include geological drill rods, water exploration drill rods, spiral drill rods, high-efficiency spiral drill rods, combined drill rods, triangular drill rods, wide-blade spiral drill rods, etc. The more durable one is the geological drill rod, which has high bending strength and can ensure the straightness requirement during deep hole drilling. However, the drill rod needs to discharge debris in time during operation. Poor chip removal will cause the drill rod to break. It is easy to be twisted off, stuck, or dropped during use, affecting its service life. For this reason, a powder removal device for a down-the-hole drill is proposed. Summary of the invention

[0004] In view of the problem of poor chip removal of the drill rod in the above or prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a dust removal device for a down-the-hole drill.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: comprising a drilling rig, comprising an external joint and a drill rod, a connecting structure is arranged between the drilling rig and the drill rod, an adjusting mechanism for auxiliary powder discharge is arranged in the drill rod, straight cut surfaces are evenly arranged on the outer wall of the drill rod, a drill bit is arranged at one end of the drill rod away from the external joint, a discharge groove is arranged on the outer surface of the drill bit, the position of the discharge groove is relative to the middle of the straight cut surface, a spiral powder discharge groove is arranged around the outer wall of the drill rod, the spiral powder discharge groove intersects with the straight cut surface, and the spiral powder discharge groove divides the straight cut surface into a plurality of blocking areas, the adjusting mechanism comprises a supporting member arranged in the drill rod, a rotating member is arranged in the supporting member, a sliding member is on the outer wall of the supporting member, a resistance member cooperating with the rotating member is arranged on the sliding member, an adjusting member is arranged at one end of the sliding member, and also comprises a blocking member arranged on the outer wall of the drill rod, the adjusting member and the blocking member cooperate to crush the large debris in the blocking area.

[0007] As a preferred solution of the powder discharge device for a down-the-hole drill of the present invention, there are three straight cut surfaces on the outer wall of the drill rod, there are three discharge grooves on the surface of the drill bit, the depth of the straight cut surfaces is flush with the surface of the discharge groove, and the spiral powder discharge groove is wound around the outer surface of the drill rod.

[0008] As a preferred solution of the powder removal device for a down-the-hole drill of the present invention, the support member includes a cavity arranged in the drill rod, a support block is arranged in the cavity, a hollow hole is arranged in the support block and the sleeve, and the rotating member is arranged in the hollow hole.

[0009] As a preferred solution of the powder removal device for a down-the-hole drill of the present invention, the rotating part includes a mounting groove arranged in the external joint, a motor is arranged in the mounting groove, a rotating rod is arranged at the shaft end of the motor rotor, and a movable disk is arranged on the outer wall of the rotating rod.

[0010] As a preferred solution of the powder discharge device for a down-the-hole drill of the present invention, a clamping block is arranged around the outer wall of the movable disk, a protrusion is integrally formed on the clamping block, and a clamping groove is arranged in the protrusion.

[0011] As a preferred solution of the powder removal device for a down-the-hole drill of the present invention, the sliding part includes an annular groove arranged on the outer wall of the sleeve, a through opening is arranged around the outer wall of the annular groove, a sliding block is arranged in the through opening, an opening is arranged in the sliding block, a rubber ring is arranged in the annular groove, and the rubber ring surrounds the outer wall of the sleeve.

[0012] As a preferred solution of the powder removal device for a down-the-hole drill of the present invention, the rubber ring is arranged in the opening, the rubber ring limits the sliding block, a limiting block is integrally formed at one end of the sliding block, a limiting portion is formed on the side of the limiting block, and the limiting portion is attached to the upper end surface of the sleeve.

[0013] As a preferred solution of the powder removal device for a down-the-hole drill of the present invention, the resistance member includes a resistance portion arranged at one end of a sliding block, the end of the sliding block away from the opening is a translation surface, the translation surface is in contact with the resistance portion, a resistance groove is provided in the resistance portion, the side of the resistance groove in contact with the translation surface is an inclined surface, and the protrusion correspondingly resists against the translation surface and the inclined surface.

[0014] As a preferred solution of the powder removal device for the down-the-hole drill of the present invention, the adjusting part includes a blocking part fixedly connected to the middle part of the limit block, the two sides of the blocking part are blocking surfaces, a cutting groove is provided in the blocking part, the blocking part is triangular, the cutting groove is in the shape of a letter, the straight cutting surface is provided with a socket relative to the position of the blocking part, and the blocking part passes through the socket accordingly.

[0015] As a preferred embodiment of the powder removal device for a down-the-hole drill of the present invention, the barrier member includes a first cutting portion and a second cutting portion arranged in a blocking area, the first cutting portion and the second cutting portion are arranged on a straight cutting plane, the first cutting portion and the second cutting portion have the same inclination angle, and the first cutting portion and the second cutting portion are not in the same plane, a crushing area is formed between the first cutting portion and the second cutting portion, and the barrier member is arranged in the crushing area.

[0016] The beneficial effects of the powder removal device for a down-the-hole drill of the present invention are as follows: the present invention can transport the crushed debris outward through the spiral powder removal groove on the outer wall of the drill pipe, and three groups of straight cut surfaces are evenly arranged on the outer wall of the drill pipe, and the spiral powder removal groove divides the straight cut surfaces into a plurality of blocking areas, so that the debris transported outward is crushed in the blocking areas, and the debris is transported through the spiral powder removal groove, which has better powder removal efficiency and drilling intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is an overall schematic diagram of a powder removal device for a down-the-hole drill.

[0019] Figure 2 This is a schematic diagram of the drill rod structure of a powder removal device for a down-the-hole drill.

[0020] Figure 3 This is a schematic diagram of the drill rod cross-section structure of a powder removal device for a down-the-hole drill.

[0021] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism of the powder discharge device for a down-the-hole drill.

[0022] Figure 5 For powder removal device for down-the-hole drilling rig Figure 3 Schematic diagram of the enlarged structure at B.

[0023] Figure 6 This is a schematic diagram of the drill rod structure of a powder removal device for a down-the-hole drill.

[0024] Figure 7 This is a schematic diagram of the sliding structure of the powder discharge device for a down-the-hole drill.

[0025] Figure 8 This is a schematic diagram of the matching structure of the rotating parts and sliding parts of the powder discharge device for a down-the-hole drill.

[0026] Fig. 9For powder removal device for down-the-hole drilling rig Figure 2 A is an enlarged structural diagram of FIG.

[0027] In the figure: 100, external joint; 101, drill rod; 102, connection structure; 101a, straight section; 101b, drill bit; 101c, discharge slot; 101d, spiral powder discharge slot; 101e, blocking area; 200, adjustment mechanism; 201, support member; 202, rotating member; 203, sliding member; 204, resistance member; 205, adjustment member; 301, barrier member; 400, drilling machine; 201a, cavity; 201b, support block; 201c, sleeve; 201d, hollow hole; 202a, mounting slot; 202b, motor; 202c, rotating rod ; 202d, movable disk; 202e, block; 202f, protrusion; 202g, slot; 203a, annular groove; 203b, through port; 203c, sliding block; 203d, opening; 203e, rubber ring; 203f, limit block; 203g, limit part; 204a, interference part; 204b, translation surface; 204c, interference groove; 204d, inclined surface; 205a, blocking part; 205b, blocking surface; 205c, cutting groove; 205d, socket; 301a, first cutting part; 301b, second cutting part; 301c, crushing area. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1, reference Figures 1 to 4, which is the first embodiment of the present invention, provides a powder discharge device for a down-the-hole drill, including a drill 400, including an external joint 100 and a drill rod 101, a connecting structure 102 is provided between the drill 400 and the drill rod 101, an adjustment mechanism 200 for auxiliary powder discharge is provided in the drill rod 101, straight cut surfaces 101a are evenly arranged on the outer wall of the drill rod 101, a drill bit 101b is provided at one end of the drill rod 101 away from the external joint 100, a discharge groove 101c is provided on the outer surface of the drill bit 101b, the position of the discharge groove 101c is relative to the middle of the straight cut surface 101a, a spiral powder discharge groove 101d is arranged around the outer wall of the drill rod 101, the spiral powder discharge groove 101d intersects with the straight cut surface 101a, and the spiral powder discharge groove 101d divides the straight cut surface 101a into a plurality of blocking areas 101e.

[0032] The device includes an external connector 100 and a drill rod 101. A connection structure 102 is provided between the external connector 100 and the drill rig 400. For the connection of the output end of the drill rig, there are two fixing methods, namely, a bolt connection method and a screw clamping method. For the drill rod 101, Figure 1 and Figure 2 As shown, the drill rig 400 includes an external joint 100 disposed inside the drill rig 400, and the diameter of the drill rod 101 is only about one-third of the main rod. When the drill rod 101 is connected to the drill rig 400, the stability and durability of the drill rod 101 are ensured. Figure 1 and Figure 2 It can be seen that one end of the drill rod 101 is connected to the drilling rig 400 through the external joint 100, and the protruding end of the drill bit 101b plays a certain protective role on the main body of the drill rod 101. When the drill rod 101 encounters a hard rock drill rod 101, the protruding end of the drill bit 101b has a larger diameter than the drill rod 101 and the protruding end of the drill bit 101b is an arc-shaped end, which not only reduces the impact resistance during drilling, but also ensures the friction resistance of the main rod of the drill rod when the drilling depth increases.

[0033] The adjusting mechanism 200 includes a supporting member 201 arranged in the drill rod 101, a rotating member 202 is arranged in the supporting member 201, a sliding member 203 is arranged on the outer wall of the supporting member 201, a resistance member 204 cooperating with the rotating member 202 is arranged on the sliding member 203, an adjusting member 205 is arranged at one end of the sliding member 203, and also includes a blocking member 301 arranged on the outer wall of the drill rod 101, the adjusting member 205 and the blocking member 301 cooperate to crush the large debris in the blocking area 101e.

[0034] The present invention further refines the structure of the drill rod 101, and straight cut surfaces 101a are evenly arranged on the outer wall of the drill rod 101. There are three straight cut surfaces 101a on the outer wall of the drill rod 101. At the same time, there are three discharge grooves 101c on the surface of the drill bit 101b. The depth of the straight cut surface 101a is flush with the surface of the discharge groove 101c. A spiral powder discharge groove 101d is arranged around the outer wall of the drill rod 101. The spiral powder discharge groove 101d is wound around the outer surface of the drill rod 101, and the spiral powder discharge groove 101d intersects with the straight cut surface 101a. The spiral powder discharge groove 101d divides the straight cut surface 101a into a plurality of blocking areas 101e.

[0035] At the same time, the drill rod 101 forms a triangular structure, and the rod body of the triangular drill rod is processed with a triangular profile, which makes the drill resistance small and effectively improves the powder removal efficiency and drilling speed. The hole wall can be scraped and maintained continuously during the rotation process, effectively preventing hole collapse, drill jamming, and drill burial. In addition, the protruding end of the front drill bit 101b cooperates with the front end of the discharge groove 101c to fully contact the mining surface and frictionally discharge powder from the mining surface, so that the spiral powder discharge groove 101d cooperates with the straight cutting surface to 101a ensures stronger powder discharge efficiency and drilling strength, and because the spiral powder discharge groove 101d divides the straight section 101a into multiple blocking areas 101e, when discharging powder, the debris is discharged along the spiral powder discharge groove 101d. At the same time, because the spiral powder discharge groove 101d divides the straight section 101a into multiple blocking areas 101e, and the outer surface of the drill rod 101 is provided with a blocking member 301 relative to the blocking area 101e, the transported debris is crushed to ensure efficiency during transportation.

[0036] At the same time, a movable adjusting member 205 is provided, which is located in the middle of the blocking area 101e, so that a crushable slag discharge channel is formed in the middle of the blocking area 101e, and the crushed slag enters the spiral powder discharge groove 101d through the slag discharge channel, and the crushed slag is transported outward through the spiral powder discharge groove 101d on the outer wall of the drill rod 101. When the hole collapses in the drill hole, the outside of the collapsed hole is cleared through the hole-picking function of the spiral powder discharge groove 101d. At the same time, during the slag discharge process, the slag flows on the surface of the drill rod. Through the flow and timely discharge of the slag, repeated friction at the same part is avoided, heat accumulation is reduced, the safety of drilling is guaranteed, and the slag discharge effect is greatly improved, which is conducive to increasing the drilling depth.

[0037] In summary, in actual use, the present invention can transport the crushed debris outward through the spiral powder discharge groove 101d on the outer wall of the drill rod 101, and three groups of straight cut surfaces 101a are evenly arranged on the outer wall of the drill rod 101, and the spiral powder discharge groove 101d divides the straight cut surface 101a into multiple blocking areas 101e, so that the debris transported outward is crushed in the blocking area 101e, and at the same time, a movable adjusting part 205 is provided in the blocking area 101e to adjust the crushing intensity, so that the debris transported through the spiral powder discharge groove 101d has better powder discharge efficiency and drilling intensity.

[0038] Example 2, reference Figures 5 to 9 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a support member 201 of a powder discharge device for a down-the-hole drill, the support member 201 includes a cavity 201a arranged in the drill rod 101, a support block 201b is fixedly connected in the cavity 201a, a hollow hole 201d is provided in the support block 201b and the sleeve 201c, a rotating member 202 is arranged in the hollow hole 201d, the rotating member 202 includes a mounting groove 202a arranged in the external joint 100, a motor 202b is fixedly connected in the mounting groove 202a, a rotating rod 202c is keyed to the rotor shaft end of the motor 202b, a movable disk 202d is fixedly connected to the outer wall of the rotating rod 202c, a clamping block 202e is fixedly connected around the outer wall of the movable disk 202d, a protrusion 202f is integrally formed on the clamping block 202e, and a clamping groove 202g is provided in the protrusion 202f.

[0039] Depend on Figures 5 to 7 It can be seen that a circular hole-shaped cavity 201a is provided in the drill rod 101, and a hollow support block 201b is fixedly connected in the cavity 201a. At the same time, a hollow sleeve 201c is fixedly connected to the upper end of the support block 201b, and a motor 202b is detachably installed in the inner cavity of the external joint 100. A rotating rod 202c is keyed to the rotor shaft end of the motor 202b, and the rotating rod 202c correspondingly passes through the support block 201b and the sleeve 201c. The rotating rod 202c is located at an internal position of the support block 201b and the sleeve 201c and is fixedly connected to a movable disk 202d, and three groups of clamping blocks 202e are fixedly connected to the movable disk 202d, so as to ensure that the movable disk 202d rotates while driving the clamping block 202e to rotate. At this time, the clamping block 202e cooperates with the sliding member 203 to achieve locking of the sliding member 203.

[0040] Furthermore, the sliding member 203 includes an annular groove 203a arranged on the outer wall of the sleeve 201c, a through opening 203b is arranged around the outer wall of the annular groove 203a, a sliding block 203c is movably connected in the through opening 203b, an opening 203d is arranged in the sliding block 203c, a rubber ring 203e is arranged in the annular groove 203a, the rubber ring 203e is used to limit the position of the sliding block 203c, the rubber ring 203e surrounds the outer wall of the sleeve 201c, the rubber ring 203e is arranged in the opening 203d, the rubber ring 203e limits the sliding block 203c, a limiting block 203f is integrally formed at one end of the sliding block 203c, a limiting portion 203g is formed on the side of the limiting block 203f, and the limiting portion 203g is attached to the upper end surface of the sleeve 201c.

[0041] Depend on Figure 7 and Figure 8 It can be seen that an annular groove 203a is provided on the outer wall of the sleeve 201c, and the annular groove 203a is recessed inward to form three through openings 203b. The through openings 203b are correspondingly movably connected with sliding blocks 203c, and the sliding block 203c is restricted in the sliding block 203c by a rubber ring 203e. At the same time, a limiting block 203f and a limiting portion 203g are integrally formed on the sliding block 203c, and the limiting portion 203g is attached to the upper end surface of the sleeve 201c. In this way, the stability of the sliding block 203c moving in the through opening 203b is ensured by the upper and lower limiting positions.

[0042] The resisting member 204 includes a resisting portion 204a integrally formed at one end of the sliding block 203c, the end of the sliding block 203c away from the opening 203d is a translation surface 204b, a resisting groove 204c is provided in the resisting portion 204a, the side of the resisting groove 204c in contact with the translation surface 204b is an inclined surface 204d, and the protrusion 202f correspondingly abuts against the translation surface 204b and the inclined surface 204d, and the adjusting member 205 includes a blocking portion 205a fixedly connected to the middle part of the limit block 203f, the two sides of the blocking portion 205a are blocking surfaces 205b, a cutting groove 205c is provided in the blocking portion 205a, the blocking portion 205a is triangular, and the cutting groove 205c is V-shaped, and a socket 205d is provided at the position of the straight cutting surface 101a relative to the blocking portion 205a, and the blocking portion 205a correspondingly passes through the socket 205d.

[0043] Depend on Figure 8 and Fig. 9 It can be seen that the sliding block 203c is located on one side inside the sleeve 201c and has a resistance part 204a, and one end of the sliding block 203c is a translation surface 204b. At the same time, a resistance groove 204c is provided in the resistance part 204a, and the side of the resistance groove 204c in contact with the translation surface 204b is an inclined surface 204d.

[0044] In the initial state, the block 202e is in contact with the translation surface 204b. When the movable disk 202d rotates, it drives the block 202e to rotate. At this time, the block 202e is in contact with the translation surface 204b and the inclined surface 204d in sequence. When the block 202e moves to the inclined surface 204d, the block 202e will squeeze the sliding block 203c to make the sliding block 203c slide. The movement of the block 202e squeezing the sliding block 203c is divided into two stages. When the block 202e is in contact with the translation surface 204b, it is the first stage, and the sliding block 203c will not slide. When the block 202e is in contact with the inclined surface 204d, it is the second stage, and the sliding block 203c will slide after being resisted. In this way, the sliding block 203c has different working positions.

[0045] A blocking portion 205a is fixedly connected to the middle of the limit block 203f. The blocking portion 205a is triangular, the cutting groove 205c is V-shaped, and the straight cut surface 101a is provided with a socket 205d relative to the blocking portion 205a. The projection of the socket 205d is trapezoidal, and the blocking portion 205a correspondingly passes through the socket 205d. Since the position of the sliding block 203c can be adjusted by the position of the movable disk 202d, the position of the blocking portion 205a can also be adjusted. When in use, the distance that the blocking portion 205a extends from the socket 205d can be controlled to adjust the position of the blocking portion 205a in the blocking area 101e. After the adjustment, the space in the blocking area 101e will change. Due to the change in the distance between the structures and the change in the spatial size, different extrusion effects will be produced on the powder residue, and the crushing intensity can be adjusted, thereby achieving a better crushing effect.

[0046] The rest of the structure is the same as that of Example 1.

[0047] When in use, it is only necessary to start the motor 202b through the external controller, and the motor 202b drives the movable disk 202d on the rotating rod 202c to rotate. At this time, the three groups of blocks 202e on the movable disk 202d rotate synchronously. When the block 202e contacts the inclined surface 204d, it drives the sliding block 203c to move in the opening 203b. At this time, the blocking part 205a correspondingly passes through the socket 205d, and the spiral powder discharge groove 101d discharges the debris produced after the drill rod 101 is crushed. At the same time, since the blocking part 205a is located between the blocking parts 301, the transmitted debris is crushed, so that the spiral powder discharge groove 101d has a better powder discharge efficiency when discharging powder.

[0048] Example 3, reference Figure 2 and Fig. 9, which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a barrier 301 of a powder discharge device for a down-the-hole drill, and the barrier 301 includes a first cutting portion 301a and a second cutting portion 301b arranged in a blocking area 101e, the first cutting portion 301a and the second cutting portion 301b are fixedly connected to the straight cutting surface 101a, the first cutting portion 301a and the second cutting portion 301b have the same inclination angle, and the first cutting portion 301a and the second cutting portion 301b are not in the same plane, a crushing area 301c is formed between the first cutting portion 301a and the second cutting portion 301b, and the barrier 205a is arranged in the crushing area 301c.

[0049] Depend on Figure 2 and Fig. 9 It can be seen that the first cutting portion 301a and the second cutting portion 301b are fixedly connected to the straight cutting surface 101a, and the first cutting portion 301a and the second cutting portion 301b are distributed in a stepped manner from top to bottom, and the inclination angles of the first cutting portion 301a and the second cutting portion 301b are consistent, the first cutting portion 301a and the second cutting portion 301b are not at the same height, and there is a certain distance between the first cutting portion 301a and the second cutting portion 301b in the vertical direction, the first cutting portion 301a and the second cutting portion 301b are in contact with the straight cutting surface 101a, and the ends of the first cutting portion 301a and the second cutting portion 301b that are close to each other are arc-shaped. During operation, as the drill rod 101 rotates, the powder residue can be squeezed and guided by the first cutting portion 301a and the second cutting portion 301b to guide the powder residue to be discharged, which makes the drill rod 101 have a better effect in crushing and discharging powder.

[0050] The rest of the structure is the same as that of Example 2.

[0051] In summary, the present invention divides the straight section 101a into a plurality of blocking areas 101e by means of a spiral powder discharge groove 101d, and a first cutting portion 301a and a second cutting portion 301b are provided in the blocking area 101e. When the drill rod 101 is broken during drilling, the first cutting portion 301a and the second cutting portion 301b are used to guide the crushed slag, and the blocking area 101e can also squeeze the powder slag during the rotation process, thereby assisting in the dispersion of the powder slag, so that the spiral powder discharge groove 101d can discharge the powder more smoothly, thereby improving the working efficiency of the drill rod 101.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A dust removal device for a down-the-hole drill, comprising a drill (400), an external joint (100) and a drill rod (101), wherein a connecting structure (102) is provided between the drill (400) and the drill rod (101), characterized in that: An adjustment mechanism (200) for assisting powder discharge is provided in the drill rod (101); Straight cut surfaces (101a) are evenly arranged on the outer wall of the drill rod (101); a drill bit (101b) is arranged at one end of the drill rod (101) away from the external joint (100); a discharge groove (101c) is arranged on the outer surface of the drill bit (101b); the discharge groove (101c) is aligned with the center line of the straight cut surface (101a); a spiral powder discharge groove (101d) is arranged around the outer wall of the drill rod (101); the spiral powder discharge groove (101d) intersects with the straight cut surface (101a); and the spiral powder discharge groove (101d) divides the straight cut surface (101a) into a plurality of blocking areas (101e); The adjusting mechanism (200) comprises a supporting member (201) arranged in a drill rod (101), a rotating member (202) being arranged in the supporting member (201), a sliding member (203) being arranged on the outer wall of the supporting member (201), a resisting member (204) cooperating with the rotating member (202) being arranged on the sliding member (203), an adjusting member (205) being arranged at one end of the sliding member (203), and further comprising a blocking member (301) arranged on the outer wall of the drill rod (101), the adjusting member (205) and the blocking member (301) cooperating to crush large debris in the blocking area (101e).

2. The powder removal device for a down-the-hole drill according to claim 1, characterized in that: The straight cut surfaces (101a) are located on the outer wall of the drill rod (101) in number of three, the discharge grooves (101c) are located on the surface of the drill bit (101b) in number of three, the depth of the straight cut surfaces (101a) is flush with the surface of the discharge grooves (101c), and the spiral powder discharge grooves (101d) are wound around the outer surface of the drill rod (101).

3. The powder removal device for a down-the-hole drill according to claim 2, characterized in that: The support member (201) comprises a cavity (201a) arranged in the drill rod (101), a support block (201b) is arranged in the cavity (201a), a sleeve (201c) is arranged on the upper end surface of the support block (201b), a hollow hole (201d) is arranged in the support block (201b) and the sleeve (201c), and the rotating member (202) is arranged in the hollow hole (201d).

4. The dust removal device for a down-the-hole drill according to claim 3, characterized in that: The rotating member (202) comprises a mounting groove (202a) arranged in the external joint (100), a motor (202b) being arranged in the mounting groove (202a), a rotating rod (202c) being arranged at the rotor shaft end of the motor (202b), and a movable disk (202d) being arranged on the outer wall of the rotating rod (202c).

5. The dust removal device for a down-the-hole drill according to claim 4, characterized in that: A clamping block (202e) is disposed around the outer wall of the movable disk (202d), a protrusion (202f) is integrally formed on the clamping block (202e), and a clamping groove (202g) is disposed in the protrusion (202f).

6. The dust removal device for a down-the-hole drill according to claim 5, characterized in that: The sliding member (203) comprises an annular groove (203a) arranged on the outer wall of the sleeve (201c); a through opening (203b) is arranged around the outer wall of the annular groove (203a); a sliding block (203c) is arranged in the through opening (203b); an opening (203d) is arranged in the sliding block (203c); a rubber ring (203e) is arranged in the annular groove (203a); and the rubber ring (203e) surrounds the outer wall of the sleeve (201c).

7. The dust removal device for a down-the-hole drill according to claim 6, characterized in that: The rubber ring (203e) is arranged in the opening (203d), and the rubber ring (203e) limits the sliding block (203c); a limiting block (203f) is integrally formed at one end of the sliding block (203c); a limiting portion (203g) is formed on the side of the limiting block (203f); and the limiting portion (203g) is attached to the upper end surface of the sleeve (201c).

8. The dust removal device for a down-the-hole drill according to claim 7, characterized in that: The resisting member (204) comprises a resisting portion (204a) arranged at one end of a sliding block (203c); the end of the sliding block (203c) away from the opening (203d) is a translation surface (204b); the translation surface (204b) is in contact with the resisting portion (204a); a resisting groove (204c) is provided in the resisting portion (204a); a surface of the resisting groove (204c) in contact with the translation surface (204b) is an inclined surface (204d); and the protrusion (202f) resists against the translation surface (204b) and the inclined surface (204d) correspondingly.

9. The dust removal device for a down-the-hole drill according to claim 8, characterized in that: The adjusting member (205) comprises a blocking portion (205a) fixedly connected to the middle of the limiting block (203f), the two sides of the blocking portion (205a) are blocking surfaces (205b), a cutting groove (205c) is provided in the blocking portion (205a), the blocking portion (205a) is triangular, and the cutting groove (205c) is V-shaped; The straight cut surface (101a) is provided with a socket (205d) at a position relative to the blocking portion (205a), and the blocking portion (205a) correspondingly passes through the socket (205d).

10. The dust removal device for a down-the-hole drill according to claim 9, characterized in that: The barrier (301) comprises a first cutting portion (301a) and a second cutting portion (301b) arranged in a blocking area (101e); the first cutting portion (301a) and the second cutting portion (301b) are arranged on a straight cut surface (101a); the first cutting portion (301a) and the second cutting portion (301b) have the same inclination angle, and the first cutting portion (301a) and the second cutting portion (301b) are not located in the same plane; a crushing area (301c) is formed between the first cutting portion (301a) and the second cutting portion (301b); and the barrier (205a) is arranged in the crushing area (301c).

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