CN109025865B - Dust catching device for drilling - Google Patents
Dust catching device for drilling Download PDFInfo
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- CN109025865B CN109025865B CN201811161197.1A CN201811161197A CN109025865B CN 109025865 B CN109025865 B CN 109025865B CN 201811161197 A CN201811161197 A CN 201811161197A CN 109025865 B CN109025865 B CN 109025865B
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- dust
- falling cover
- cover
- dust falling
- ejector rod
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Abstract
The invention discloses a dust catching device for drilling, which is characterized by comprising a dust falling cover which is small in upper part and large in lower part and is integrally conical, wherein the top of the dust falling cover is provided with a first through hole for a drill rod to pass through; the inner wall of the dust falling cover is provided with a spraying device, and the spraying device is positioned on the upper part of the dust falling cover and is arranged towards the middle part of the dust falling cover along the oblique lower part; the dust falling cover is also provided with a water inlet communicated with the spraying device, and the water inlet is connected with a water supply pump; the upper cover shell of the dust falling cover is also provided with a dust exhaust hole and a dust exhaust pipe connected to the dust exhaust hole, and a dust exhaust opening at one end of the dust exhaust pipe, which is far away from the dust falling cover, is bent downwards; and a suction device is further arranged in the dust falling cover, so that dust in the dust cover can enter the dust exhaust pipe and subside from the dust exhaust port. The dust catcher has the advantages of simple structure, good dust catching effect, capability of effectively reducing dust diffusion, reducing raise dust, being beneficial to improving the working environment and the like.
Description
Technical Field
The invention relates to the technical field of mining machinery, in particular to a dust catching device for drilling.
Background
The down-the-hole drill is an impact rotary drill, when drilling, the impacter is down-the-hole, the piston (hammer) in the impacter reciprocates to strike the drill bit tail through the air distributing device (valve), so that the drill bit impacts the hole bottom rock. The high-speed rotation of the impactor in the hole is realized by a single rotating mechanism, namely an electric motor or a pneumatic rotating device outside the hole through a drill rod connected to the rear end of the impactor. The rock powder produced during rock drilling is flushed out of the discharge hole by the mixed gas of air and water, and the mixed gas is injected into the impactor from the powder discharge mechanism through the center of the drill rod and then enters the bottom of the hole through the gas groove on the cylinder body of the impactor.
In the pipe jacking construction, when part of sandy soil which is very easy to collapse is encountered, in order to ensure the construction safety, the sandy soil must be solidified, and the adopted mode is static pressure grouting. A down-the-hole drill is used for guiding holes before static pressure grouting construction, and then grouting perforated pipes are placed. In the process of down-the-hole drill construction, the soil slag can be sprayed out along with the drill rod, which has great influence on the surrounding environment and is not beneficial to safe and civilized construction. In the traditional construction process, a fog gun machine is used for aiming at the position of a drill rod for dust fall, but the effect is not good in actual construction.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a simple structure, it is effectual to catch dirt, can effectively reduce dust diffusion, reduces the raise dust, is favorable to improving the drilling of operational environment and is used the dirt device of catching.
In order to solve the technical problems, the invention adopts the following technical scheme:
a dust catching device for drilling is characterized by comprising a dust falling cover which is small in upper part and large in lower part and is integrally conical, wherein the top of the dust falling cover is provided with a first through hole for a drill rod to pass through; the inner wall of the dust falling cover is provided with a spraying device, and the spraying device is positioned on the upper part of the dust falling cover and is arranged towards the middle part of the dust falling cover along the oblique lower part; the dust falling cover is also provided with a water inlet communicated with the spraying device, and the water inlet is connected with a water supply pump; the upper cover shell of the dust falling cover is also provided with a dust exhaust hole and a dust exhaust pipe connected to the dust exhaust hole, and a dust exhaust opening at one end of the dust exhaust pipe, which is far away from the dust falling cover, is bent downwards; and a suction device is further arranged in the dust falling cover, so that dust in the dust cover can enter the dust exhaust pipe and subside from the dust exhaust port.
Adopt above-mentioned structure, utilize the suction device in the dust fall cover to make the dust that overflows enter into the dust fall cover inside better, avoid the dust to spread from the clearance between dust fall cover and the ground, improve the dust collection effect. Meanwhile, part of dust in contact with the water mist can be conveyed into the dust exhaust pipe by utilizing the suction device, and is fully combined with the water mist in the process of bending along the dust exhaust pipe, so that the specific gravity is increased, and the dust is smoothly settled from the dust exhaust port.
Further, the suction device is coaxially arranged in the dust falling cover, and the middle part of the suction device is provided with a hole for a drill rod to pass through; suction device is including wholly being cylindrical support body and being annular flabellum, the one end fixed connection of support body is in on the dust fall covers, and the other end is installed through the bearing the flabellum, install the mechanism of holding tightly that is used for holding tightly the drilling rod on the inner ring of flabellum, make the flabellum can rotate along with the drilling rod.
By adopting the structure, the support body and the fan blades are coaxially arranged in the dust-settling cover, the drill rod coaxially penetrates through the support body and the fan blades, the holding mechanism on the inner ring of the fan blades is used for holding the drill rod tightly, the rotation of the drill rod drives the fan blades to rotate together, and the escaped dust can be sucked. This structural design is ingenious, and make full use of drilling rod self pivoted characteristic need not to provide extra drive arrangement, can make the flabellum rotate and realize the suction.
Furthermore, the clasping mechanism comprises ejector rod seats uniformly distributed along the circumferential direction of the fan blades and ejector rod assemblies slidably arranged on the ejector rod seats along the radial direction of the fan blades in a penetrating manner; and a spring is further arranged between the ejector rod assembly and the ejector rod base, so that the ejector rod assembly moves towards the axis direction of the fan blades.
Thus, the ejector rods uniformly distributed along the circumferential direction of the fan blades are tightly pressed on the drill rod under the action of the spring force, and the fan blades are driven to rotate together along with the rotation of the drill rod.
Furthermore, the ejector rod assembly comprises two ejector rods arranged along the radial direction of the fan blade, one ends of the two ejector rods facing the axis of the fan blade are connected with a rotating shaft, and the rotating shaft is rotatably provided with a roller; the other end of the ejector rod penetrates through the ejector rod seat and is provided with a blocking part; the spring is a spiral spring sleeved on the ejector rod; the axis of gyro wheel perpendicular to the axis direction of flabellum, and the middle part has the interior concave part of forming by both ends are inwards sunken gradually, the projection of interior concave part is arc in radial, and its radius is unanimous with the radius of drilling rod, makes the interior concave part of gyro wheel can laminate on the surface of drilling rod.
Like this, when guaranteeing that gyro wheel and drilling rod laminating messenger's flabellum pivoted, can utilize the rotation of gyro wheel, guarantee that the drilling rod can reciprocate smoothly.
Furthermore, a plurality of annular convex edges are uniformly distributed in the inner concave part of the roller along the axial direction, and the height of each convex edge is 0.5-1 mm.
In this way, the friction between the roller and the drill rod in the circumferential direction may be increased.
Furthermore, a top plate is further arranged on one side of the ejector rod seat facing to the axis direction of the fan blades, and holes for the ejector rods to penetrate through are formed in two ends of the top plate; one end of the spring, facing the ejector rod seat, abuts against the ejector plate; the middle part of the ejector rod seat is provided with a threaded hole which penetrates towards the top plate, and an adjusting bolt which is abutted against the top plate is installed on the threaded hole.
By adopting the structure, the top plate can be jacked by the adjusting bolt to compress the spring, and the initial pressure of the spring can be adjusted.
Furthermore, the ejector rod assembly inclines upwards by 15-30 degrees towards one end of the axis of the fan blade.
Due to the fact that the drill rod penetrates through the dust falling cover downwards from the top during assembly, when the drill rod penetrates through the dust falling cover, the downward acting force of the ejector rod assembly can be decomposed in the axial direction of the ejector rod assembly, the ejector rod assembly and the spring retract, and the drill rod can penetrate through the dust falling cover conveniently.
Furthermore, the end of the dust exhaust pipe where the dust exhaust port is located is in a conical shape with the diameter gradually reduced.
Like this for the part dust that has not contacted water smoke can contact water smoke when the dust exhaust mouth with greater probability yet, is favorable to improving the dust fall effect.
Further, the spraying device is arranged in plurality along the circumferential direction of the dust falling cover.
Like this, carry out the dust fall to particle dust from all directions, be favorable to improving the effect of dust fall.
In conclusion, the dust catcher has the advantages of simple structure, good dust catching effect, capability of effectively reducing dust diffusion, reducing raise dust, being beneficial to improving the working environment and the like.
Drawings
FIG. 1 is a schematic structural diagram of a dust-fall down-the-hole drill.
Fig. 2 is a schematic diagram of a half-section structure of the dust falling cover.
Fig. 3 is another half-section structure schematic diagram of the dust falling cover.
Fig. 4 is a schematic structural view of the ram seat and ram assembly portions of fig. 2 and 3.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the specific implementation: as shown in fig. 1 and 2, the dust-fall down-the-hole drill comprises a carriage 11 and a sliding plate 12 which is slidably mounted on the carriage, wherein a rotary assembly 13 is mounted on the sliding plate 12, and a drill rod 15 is mounted at the output end of the rotary assembly 13; a guide seat 14 is vertically installed at the lower end of the carriage 11, a guide hole coaxial with the rotation assembly 13 is formed in the guide seat 14, and the drill rod 15 penetrates through the guide hole; the dust falling cover 2 is arranged on the guide seat 14 and is in a conical shape with a small upper part and a large lower part, and a first through hole for a drill rod to pass through is formed in the top of the dust falling cover 2; the inner wall of the dust falling cover 2 is provided with a spraying device 21, and the spraying device 21 is positioned at the upper part of the dust falling cover 2 and is arranged towards the middle part of the dust falling cover 2 along the oblique lower part; the dust falling cover 2 is also provided with a water inlet communicated with the spraying device 21, and the water inlet is connected with a water supply pump.
Adopt above-mentioned structure, through the installation dust fall cover on the guide holder of balladeur train lower extreme, can carry out preliminary shade to the dust that spills over during the construction, avoid dust loss, simultaneously, the atomizer that utilizes dust fall cover inner wall to set up sprays, just can make dust particle and vaporific water particle combine, promotes dust and subsides to effective dust fall. The dust collecting device is simple in structure, convenient to operate and use, capable of effectively reducing dust diffusion and raising dust, and beneficial to improvement of the operation environment.
In the implementation process, the dust falling cover 2 is also internally provided with a separation net 22 which is arranged in a direction vertical to the axis, and the middle part of the separation net 22 is provided with a second through hole for a drill rod to pass through; the separation net 22 is positioned at the lower part of the dust falling cover 2.
Like this, can separate the great grit of partial particle diameter through separating the net, prevent that the grit from striking dust fall cover and atomizer, be favorable to improving dust cover and atomizer's life. In addition, the large-particle-size sand stone can settle, and after the sand stone is separated, the spraying device only sprays and dusts to the particle dust easy to escape, so that the dustfall effect can be improved, and the water for dustfall is saved.
In practice, the separation net 22 comprises a frame with the shape consistent with the shape of the inner hole of the dust falling cover 22, and a net installed on the frame; a plurality of buckles for fixing the frame are arranged in the dust falling cover 22 along the circumferential direction, and the cross section of the dust falling cover 22 at the buckle position is consistent with the size of the frame; the frame is detachably clamped on the clamping buckle.
Because the strength of the separation net is relatively low and the separation net is impacted by the sand with large particle size for a long time, the damage rate of the separation net is relatively high and the separation net needs to be replaced regularly. In the structure, the separation net is detachably arranged in the dust falling cover through the buckle, so that the separation net can be quickly disassembled and assembled conveniently, and the maintenance and the replacement are convenient.
In implementation, the dust hood 2 includes a left hood body and a right hood body which are symmetrically arranged, opposite sides of the left hood body and the right hood body are respectively provided with a flange which extends outwards in the radial direction, the flange is provided with a bolt hole, and the left hood body and the right hood body are fixedly connected through a bolt which passes through the bolt hole on the flange.
Therefore, the left cover body and the right cover body can be assembled and installed on the outer side of the drill rod without disassembling the drill rod, and the disassembly and the assembly are convenient and fast.
In practice, the separation net 22 includes a left separation net and a right separation net which are symmetrically arranged.
Like this, can separate the net with a left side and the net is connected in left cover body and right cover body joint respectively with the right side, with left cover body and right cover body amalgamation when installing in the drilling rod outside, the net is separated with the right side on a left side and the net is whole with regard to the amalgamation to be separated the net for the dismouting is more convenient.
When the dust falling cover is specifically implemented, the whole buckle is U-shaped, and the opening of the buckle faces the middle part of the dust falling cover; the bottom of buckle is along the crooked joint portion that holds of width direction to both sides formation of frame.
During specific implementation, the buckle can also be that the upper end is connected fall on the inner wall of dirt cover 2, the lower extreme with fall and form the bayonet socket between the inner wall of dirt cover 2, the middle part orientation of buckle the curved shape becomes to be used for holding in dust cover 2 the joint portion of frame. Like this, only need will separate the net from the bottom of dust cover in the card income buckle joint portion of frame card that the net goes into, during the dismantlement, along the axis of dust cover frame of pulling downwards, just can be with separating the net dismantlement, easy dismounting.
In the implementation, the aperture of the separation net 22 is 4-8 mm.
Like this, great aperture both can the separation great particle diameter the grit, can guarantee again that particle dust can more smoothly pass through the separation net and overflow, and the atomizer of being convenient for sprays the dust fall.
In implementation, the dust falling cover 2 is further provided with a mounting plate 23 arranged perpendicular to the axis below, and the mounting plate 23 comprises a left mounting plate and a right mounting plate which are symmetrically arranged; the mounting plate 23 is fixedly connected with the dust falling cover 2 through support ribs 24 arranged along the circumferential direction, and the middle part of the mounting plate 23 is provided with an abdicating hole for a drill rod to pass through; run through on the guide holder 14 and be provided with a plurality of bolt holes of arranging along circumference, have on the mounting panel 23 a plurality ofly with the screw hole that the bolt hole corresponds the setting, dust falling cover 2 is through passing the bolt fixed mounting of the bolt hole on the guide holder is in the guide holder 14 top.
When carrying out the drilling location, the balladeur train is difficult to exempt from and strikes subaerial because of the operation is improper, adopts above-mentioned structure, and the mounting panel through dust fall cover below is installed the dust fall cover in the top of guide holder for the guide holder is located the lower extreme of balladeur train all the time, thereby can avoid dust fall cover and ground collision, is favorable to improving the life who falls the dust cover.
In practice, the plurality of spraying devices 21 are arranged along the circumferential direction of the dust falling cover 2.
Like this, carry out the dust fall to particle dust from all directions, be favorable to improving the effect of dust fall. In specific implementation, the spraying device is an atomizing nozzle.
During specific implementation, can also adopt the dust hood that falls as the structure shown in fig. 3, fall dust hood 2 and be located the below of guide holder 14, it is provided with a plurality of bolt holes of arranging along circumference to run through on the guide holder, fall dust hood's top have a plurality of with the screw hole that the bolt hole corresponds the setting, fall dust hood passes through the bolt fastening on the guide holder.
When the dust falling cover is implemented, a dust exhaust hole and a dust exhaust pipe 25 connected to the dust exhaust hole are further arranged on the upper cover shell of the dust falling cover 2, and a dust exhaust opening at one end, far away from the dust falling cover 2, of the dust exhaust pipe 25 is bent downwards; the dust falling cover 2 is also internally provided with a suction device 3, so that dust in the dust falling cover 2 can enter the dust exhaust pipe 25 and subside from the dust exhaust port.
Adopt above-mentioned structure, utilize the suction device in the dust fall cover to make the dust that overflows enter into the dust fall cover inside better, avoid the dust to spread from the clearance between dust fall cover and the ground, improve the dust collection effect. Meanwhile, part of dust in contact with the water mist can be conveyed into the dust exhaust pipe by utilizing the suction device, and is fully combined with the water mist in the process of bending along the dust exhaust pipe, so that the specific gravity is increased, and the dust is smoothly settled from the dust exhaust port.
In implementation, the suction device 3 is coaxially arranged in the dust hood 2, and the middle part of the suction device is provided with a hole for a drill rod to pass through; suction device 3 is columnar support body 31 and is annular flabellum 32 including whole, the one end fixed connection of support body 31 is in on the dust cage 2, the other end is installed through the bearing flabellum 32, install the mechanism 4 of holding tightly that is used for holding tightly the drilling rod on the inner race of flabellum 32, make flabellum 32 can rotate along with the drilling rod.
By adopting the structure, the support body and the fan blades are coaxially arranged in the dust-settling cover, the drill rod coaxially penetrates through the support body and the fan blades, the holding mechanism on the inner ring of the fan blades is used for holding the drill rod tightly, the rotation of the drill rod drives the fan blades to rotate together, and the escaped dust can be sucked. This structural design is ingenious, and make full use of drilling rod self pivoted characteristic need not to provide extra drive arrangement, can make the flabellum rotate and realize the suction.
As shown in fig. 4, in implementation, the clasping mechanism 4 includes ejector rod bases 41 uniformly distributed along the circumferential direction of the fan blades 32, and ejector rod assemblies 42 slidably penetrating through the ejector rod bases 41 along the radial direction of the fan blades 32; a spring 43 is further disposed between the ejector rod assembly 42 and the ejector rod base 41, so that the ejector rod assembly 42 moves toward the axis of the fan blade 32.
Thus, the ejector rods uniformly distributed along the circumferential direction of the fan blades are tightly pressed on the drill rod under the action of the spring force, and the fan blades are driven to rotate together along with the rotation of the drill rod.
In implementation, the ejector rod assembly 42 includes two ejector rods arranged along the radial direction of the fan blade 32, one ends of the two ejector rods facing the axis of the fan blade are connected with a rotating shaft, and the rotating shaft is rotatably provided with a roller 45; the other end of the ejector rod penetrates through the ejector rod seat 41 and is provided with a blocking part; the spring 43 is a spiral spring sleeved on the ejector rod; the axis of the roller 45 is perpendicular to the axis direction of the fan blades, an inward concave part formed by inwards and gradually recessing two ends is arranged in the middle of the roller 45, the projection of the inward concave part in the radial direction is arc-shaped, the radius of the inward concave part is consistent with that of the drill rod, and the inward concave part of the roller 45 can be attached to the surface of the drill rod.
Like this, when guaranteeing that gyro wheel and drilling rod laminating messenger's flabellum pivoted, can utilize the rotation of gyro wheel, guarantee that the drilling rod can reciprocate smoothly.
During implementation, a plurality of annular convex edges are uniformly distributed in the inner concave part of the roller 45 along the axial direction, and the height of each convex edge is 0.5-1 mm.
In this way, the friction between the roller and the drill rod in the circumferential direction may be increased.
In implementation, a top plate 44 is further disposed on one side of the ejector rod base 41 facing the axis direction of the fan blades, and two ends of the top plate 44 are provided with holes for the ejector rod to pass through; one end of the spring 43 facing the ejector rod seat 41 abuts on the top plate 44; the center of the jack rod base 41 has a threaded hole that is provided to penetrate toward the top plate 44, and an adjusting bolt that abuts against the top plate 44 is attached to the threaded hole.
By adopting the structure, the top plate can be jacked by the adjusting bolt to compress the spring, and the initial pressure of the spring can be adjusted.
When the fan blade lifting device is used, the ejector rod assembly 42 is arranged towards one end of the axis of the fan blade and inclines upwards for 15-30 degrees.
Due to the fact that the drill rod penetrates through the dust falling cover downwards from the top during assembly, when the drill rod penetrates through the dust falling cover, the downward acting force of the ejector rod assembly can be decomposed in the axial direction of the ejector rod assembly, the ejector rod assembly and the spring retract, and the drill rod can penetrate through the dust falling cover conveniently.
In practice, the end of the dust exhaust pipe 25 where the dust exhaust port is located is a cone with a gradually reduced diameter.
Like this for the part dust that has not contacted water smoke can contact water smoke when the dust exhaust mouth with greater probability yet, is favorable to improving the dust fall effect.
During construction, measuring and marking the position to be grouted, drilling holes at the marked position by using a down-the-hole drill, supplying water to the spraying device by using a water supply pump in the drilling process, enabling dust in the dust falling cover to be in contact with water mist for settlement, and performing static pressure grouting after the drilling is finished.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The dust catching device for drilling is characterized by comprising a dust falling cover (2) which is small in upper part and large in lower part and is integrally conical, wherein a first through hole for a drill rod to pass through is formed in the top of the dust falling cover (2); the inner wall of the dust falling cover (2) is provided with a spraying device (21), and the spraying device (21) is positioned at the upper part of the dust falling cover (2) and is arranged towards the middle part of the dust falling cover (2) along the oblique lower part; the dust falling cover (2) is also provided with a water inlet communicated with the spraying device (21), and the water inlet is connected with a water supply pump; a dust exhaust hole and a dust exhaust pipe (25) connected to the dust exhaust hole are further formed in the upper housing of the dust falling cover (2), and a dust exhaust opening at one end, far away from the dust falling cover (2), of the dust exhaust pipe (25) is bent downwards; a suction device (3) is further arranged in the dust falling cover (2), so that dust in the dust cover (2) can enter the dust exhaust pipe (25) and can be settled from the dust exhaust port;
the dust falling cover (2) is also internally provided with a separation net (22) which is arranged in a direction vertical to the axis, and the middle part of the separation net (22) is provided with a second through hole for a drill rod to pass through; the separation net (22) is positioned at the lower part of the dust falling cover (2);
the suction device (3) is coaxially arranged in the dust falling cover (2), and the middle part of the suction device is provided with a hole for a drill rod to pass through; suction device (3) are columnar support body (31) and be annular flabellum (32) including whole, the one end fixed connection of support body (31) is in on dust falling cover (2), the other end is installed through the bearing flabellum (32), install on the inner ring of flabellum (32) and be used for holding tightly mechanism (4) of drill rod, make flabellum (32) can rotate along with the drill rod.
2. The dust catching device for drilling as claimed in claim 1, characterized in that the clasping mechanism (4) comprises ejector rod bases (41) uniformly arranged along the circumferential direction of the fan blade (32), and ejector rod components (42) slidably arranged on the ejector rod bases (41) along the radial direction of the fan blade (32); and a spring (43) is further arranged between the ejector rod component (42) and the ejector rod seat (41), so that the ejector rod component (42) moves towards the axis direction of the fan blades (32).
3. The dust catching device for drilling according to claim 2, wherein the ejector rod assembly (42) comprises two ejector rods arranged along the radial direction of the fan blade (32), one ends of the two ejector rods facing the axial center of the fan blade are connected with rotating shafts, and the rotating shafts are rotatably provided with rollers (45); the other end of the ejector rod penetrates through the ejector rod seat (41) and is provided with a blocking part; the spring (43) is a spiral spring sleeved on the ejector rod; the axis of the roller (45) is perpendicular to the axis direction of the fan blades, an inward concave part formed by inwards and gradually recessing two ends is arranged in the middle of the roller, the projection of the inward concave part in the radial direction is arc-shaped, the radius of the inward concave part is consistent with that of the drill rod, and the inward concave part of the roller (45) can be attached to the surface of the drill rod.
4. The dust catching device for drilling according to claim 3, wherein the inner concave part of the roller (45) is uniformly distributed with a plurality of circular ribs along the axial direction, and the height of the ribs is 0.5-1 mm.
5. The dust catching device for drilling according to claim 3, wherein the ejector rod seat (41) is further provided with a top plate (44) at one side facing to the axial direction of the fan blades, and both ends of the top plate (44) are provided with holes for the ejector rod to pass through; the spring (43) abuts against the top plate (44) towards one end of the top rod seat (41); the middle part of the ejector rod seat (41) is provided with a threaded hole which penetrates towards the top plate (44), and an adjusting bolt which is abutted on the top plate (44) is installed on the threaded hole.
6. A dust catcher for drilling according to claim 3, wherein said ejector pin assembly (42) is inclined upward by 15 to 30 degrees toward the end of the axial center of said fan blade.
7. A dust catching device for drill holes according to claim 1 characterized in that the end of the dust exhaust pipe (25) where the dust exhaust opening is located is tapered with a decreasing diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161197.1A CN109025865B (en) | 2018-09-30 | 2018-09-30 | Dust catching device for drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161197.1A CN109025865B (en) | 2018-09-30 | 2018-09-30 | Dust catching device for drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109025865A CN109025865A (en) | 2018-12-18 |
| CN109025865B true CN109025865B (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811161197.1A Active CN109025865B (en) | 2018-09-30 | 2018-09-30 | Dust catching device for drilling |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110039663A (en) * | 2019-03-01 | 2019-07-23 | 泉州市铺梦者工业设计有限公司 | A kind of building monitoring installation chisel wall equipment that dust-proof stone detection is waved |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI118038B (en) * | 2005-11-24 | 2007-06-15 | Sandvik Tamrock Oy | Arrangement for dust treatment |
| CN103161416B (en) * | 2013-04-17 | 2016-05-11 | 山东春天钻具有限公司 | A kind of drilling guide is to dust suppression device |
| CN205765802U (en) * | 2016-07-04 | 2016-12-07 | 中冶建工集团有限公司 | A kind of special fixture of arc-shaped work |
| CN206693958U (en) * | 2017-03-21 | 2017-12-01 | 阳泉新宇岩土工程有限责任公司 | Drill hole of drilling machine dust arrester |
| CN206681358U (en) * | 2017-04-17 | 2017-11-28 | 中冶建工集团有限公司 | Expansion joint width adjusting template |
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| CN109025865A (en) | 2018-12-18 |
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