CN217999493U - Anti-blocking device for reverse circulation slag discharge port of down-the-hole hammer - Google Patents
Anti-blocking device for reverse circulation slag discharge port of down-the-hole hammer Download PDFInfo
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- CN217999493U CN217999493U CN202222272510.7U CN202222272510U CN217999493U CN 217999493 U CN217999493 U CN 217999493U CN 202222272510 U CN202222272510 U CN 202222272510U CN 217999493 U CN217999493 U CN 217999493U
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- hole hammer
- reverse circulation
- outer ring
- ring flange
- roller
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Abstract
The utility model relates to a sediment device is arranged to pile foundation heavy-calibre down-the-hole hammer reverse circulation bottom, in particular to down-the-hole hammer reverse circulation deslagging mouth prevents stifled device, including fixing the outer ring flange in bundling formula down-the-hole hammer reverse circulation deslagging mouth bottom, the outer ring flange be the ring form, the lower extreme is the cockscomb structure, outer ring flange lower extreme is provided with at least one gyro wheel that can rotate, the radial surface of gyro wheel be the cockscomb structure, the gyro wheel slightly protrudes in outer ring flange. The beneficial effect of this patent is: the friction resistance is ingeniously utilized, the roller automatically rotates, large-particle slag stones can be discharged, slag discharging is smooth, drilling efficiency is improved, the problem of drilling slag blockage is thoroughly solved, and slag discharging is clean.
Description
Technical Field
The patent relates to a pile foundation heavy-calibre down-the-hole hammer reverse circulation bottom row sediment device, in particular to down-the-hole hammer reverse circulation row sediment mouth prevents stifled device.
Background
For the pile foundation heavy-caliber down-the-hole hammer, the broken rock slag needs to be discharged as soon as possible in the drilling process, otherwise, the rock slag can be broken for multiple times, the working efficiency is reduced, and the production cost is improved.
For the requirement of large-diameter construction, a multi-head down-the-hole hammer combined drilling tool appears, and the characteristic of high efficiency of impacting dynamic load crushing of hard rock is fully utilized. But also has certain disadvantages, mainly in how to return the crushed rocks into the hole in time after the crushed rocks, and reducing repeated crushing. Most of the current cluster impactors adopt positive circulation or local reverse circulation. The method has the defects of difficult slag return, serious repeated crushing of the rock, low efficiency, large loss, large slag return dust during the forward circulation drilling, serious pollution and no contribution to environmental protection.
When the down-the-hole hammer in the market returns slag in a reverse circulation mode, the degree of vacuum in the reverse circulation mode is low, the slag return port is a straight port for discharging slag, slag stones are generally crushed into small particles, waste slag can be smoothly discharged, and drilling efficiency is reduced. Especially for large-particle broken stones, the down-the-hole hammer can not work normally due to unsmooth slag discharge sometimes.
Disclosure of Invention
This patent is lower to down-the-hole hammer when reverse circulation, and the vacuum, it is little to arrange the sediment strength, needs to smash into less granule with the slabstone, arranges the sediment inefficiency, arranges the easy technical problem who blocks up of cinder notch, provides a down-the-hole hammer reverse circulation row cinder notch anti-blocking device.
The utility model discloses a realize through following measure:
the utility model discloses a down-the-hole hammer reverse circulation slag notch anti-blocking device, its special character lies in: including fixing the outer ring flange in bunched down-the-hole hammer reverse circulation scum outlet bottom, the outer ring flange be the ring form, the lower extreme is the cockscomb structure, outer ring flange lower extreme is provided with at least one can pivoted gyro wheel, the radial surface of gyro wheel be the cockscomb structure, the gyro wheel slightly protrudes in outer ring flange.
The anti-blocking device for the reverse circulation deslagging port of the down-the-hole hammer is preferred: the roller shaft is fixed on the lower end of the outer flange plate in the diameter direction, and the roller is fixed on the roller shaft through a small sleeve.
In the anti-blocking device for the reverse circulation deslagging port of the down-the-hole hammer, in order to better fix the roller shaft, a blocking piece for fixing the roller shaft is arranged between the roller shaft and the outer flange plate.
The anti-blocking device for the reverse circulation deslagging port of the down-the-hole hammer is preferred: the radial surfaces of the two sides of the roller are in a sawtooth shape, and the middle part of the roller is provided with an inward groove.
The anti-blocking device for the reverse circulation deslagging port of the down-the-hole hammer is preferred: the diameter of the roller is 30-50% of that of the outer flange.
This device installs the pivoted gyro wheel that takes the tooth additional in the slag discharging hole position, and when down-the-hole hammer during operation, the down-the-hole hammer can carry out slow rotation along circumference, because the gyro wheel contacts the hole bottom, receives the frictional resistance gyro wheel rotation of hole bottom rock face to stir the detritus of piling up in the slag discharging hole position, get into in the sediment pipe, under the vacuum condition, discharge the detritus. Because the slag is not required to be crushed into smaller particles, the drilling efficiency is greatly improved. Because under the effect of gyro wheel, can discharge great detritus, thoroughly solve the sediment mouth and block up the problem.
The beneficial effect of this patent is: the friction resistance is ingeniously utilized, the roller automatically rotates, large-particle slag stones can be discharged, slag discharging is smooth, drilling efficiency is improved, the problem of drilling slag blockage is thoroughly solved, and slag discharging is clean.
Drawings
Fig. 1 is a schematic structural view of the anti-blocking device of the present invention.
Fig. 2 is the schematic view of the assembling structure of the anti-blocking device of the present invention.
Fig. 3 is a schematic view of an assembly structure of the present invention.
In the figure, 1 an external flange, 2 a roller shaft, 3 rollers, 4 small sleeves, 5 blocking pieces, 6 screws and 7 down-the-hole hammers.
Detailed Description
As shown in fig. 1-3, an embodiment of the present invention is an anti-blocking device for a reverse circulation slag discharge port of a down-the-hole hammer, which comprises an outer flange 1 fixed at the bottom of the reverse circulation slag discharge port of a cluster down-the-hole hammer body, wherein the upper end of the outer flange is circular, the lower end of the outer flange is serrated, the inner diameter of the outer flange is 180mm, and the height of the outer flange is 125mm.
A roller shaft 2 is fixed on the two ends of the outer flange plate in the diameter direction, fixing holes are formed in the upper portion and the lower portion of the end portion of the roller shaft 2, one fixing hole is fixed in the groove of the outer flange plate through a screw 6, and the other fixing hole is fixed on a blocking piece 5 through a screw. In order to prevent rock debris friction, separation blades 5 are additionally arranged at two ends of the roller shaft, and the separation blades 5 are welded in the grooves of the outer flange plates.
The roller shaft 2 is provided with a roller 3, the roller 3 is fixed on the roller shaft through a small sleeve 4, and the roller slightly protrudes out of the outer flange. The radial surfaces of the two sides of the roller are in a sawtooth shape, and the middle part of the roller is provided with an inward groove.
The diameter of the roller 3 is 85mm.
The cluster type down-the-hole hammer rotates to drill, the roller can rotate along with the rotation of the drill bit under the friction of the bottom of the hole, when the rock blocks at the slag discharge port block the slag discharge port, the roller rotates to stir or break the rock blocks, so that the slag discharge port is prevented from being blocked, and the drilling efficiency is improved.
Claims (5)
1. The utility model provides a down-the-hole hammer reverse circulation slag notch prevents stifled device which characterized in that: including fixing the outer ring flange in bunched down hole hammer reverse circulation deslagging port bottom, the outer ring flange be the ring form, the lower extreme is the cockscomb structure, outer ring flange lower extreme is provided with at least one can pivoted gyro wheel, the radial surface of gyro wheel be the cockscomb structure, the gyro wheel slightly protrudes in outer ring flange.
2. The down-the-hole hammer reverse circulation deslagging port anti-blocking device according to claim 1, characterized in that: the roller shaft is fixed on the lower end of the outer flange plate in the diameter direction, and the roller is fixed on the roller shaft through a small sleeve.
3. The down-the-hole hammer reverse circulation deslagging port anti-blocking device according to claim 2, wherein: and a blocking piece for fixing the roller shaft is arranged between the roller shaft and the outer flange plate.
4. The down-the-hole hammer reverse circulation deslagging port anti-blocking device according to claim 1, wherein: the radial surfaces of the two sides of the roller are in a sawtooth shape, and the middle part of the roller is provided with an inward groove.
5. The down-the-hole hammer reverse circulation deslagging port anti-blocking device according to claim 1, wherein: the diameter of the roller is 30-50% of the diameter of the outer flange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222272510.7U CN217999493U (en) | 2022-08-29 | 2022-08-29 | Anti-blocking device for reverse circulation slag discharge port of down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222272510.7U CN217999493U (en) | 2022-08-29 | 2022-08-29 | Anti-blocking device for reverse circulation slag discharge port of down-the-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217999493U true CN217999493U (en) | 2022-12-09 |
Family
ID=84325751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222272510.7U Active CN217999493U (en) | 2022-08-29 | 2022-08-29 | Anti-blocking device for reverse circulation slag discharge port of down-the-hole hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217999493U (en) |
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2022
- 2022-08-29 CN CN202222272510.7U patent/CN217999493U/en active Active
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