CN219993620U - High-pressure jet grouting pile nozzle structure - Google Patents
High-pressure jet grouting pile nozzle structure Download PDFInfo
- Publication number
- CN219993620U CN219993620U CN202321246436.XU CN202321246436U CN219993620U CN 219993620 U CN219993620 U CN 219993620U CN 202321246436 U CN202321246436 U CN 202321246436U CN 219993620 U CN219993620 U CN 219993620U
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- Prior art keywords
- nozzle
- air outlet
- drill rod
- air
- cavity
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 238000005192 partition Methods 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims description 5
- 239000002689 soil Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a high-pressure jet grouting pile nozzle structure, which comprises a drill rod and a drill bit fixedly connected with the drill rod; two air outlet nozzles are symmetrically arranged at one end of the drill rod, which is close to the drill bit, and each air outlet nozzle is internally sleeved with a nozzle; the two air outlet nozzles are communicated with an air cavity arranged in the drill rod; the two nozzles are communicated with a slurry conveying pipe arranged in the air cavity; a movable cavity is also arranged in the drill rod, the movable cavity is arranged between the air cavity and the drill bit, and a partition board is arranged in the movable cavity; the outer edge of the partition plate extends out of the sealing plate towards the direction close to the air outlet nozzle, a sliding block is fixedly connected to one side of the partition plate close to the air cavity, and one side of the partition plate far away from the air cavity is connected with the drill bit through a spring; the bottom of the air cavity is provided with a through hole for the sliding block to move up and down, and when the sliding block moves up and down in the through hole, the sealing plate is driven to seal or expose the adjacent nozzle and the air outlet nozzle.
Description
Technical Field
The utility model relates to a high-pressure jet grouting pile nozzle structure, and belongs to the technical field of construction equipment of high-pressure jet grouting piles.
Background
The high pressure jet grouting pile is to spray cement slurry into soil layer with high pressure rotating nozzle to mix with soil to form continuously lapped cement reinforcing body. The working mode sometimes adopts high-pressure water or cement slurry and air jet flow to cut and stir soil body, often because compressed gas is not uniform, a gas ring cannot be formed around the liquid jet flow for protection, and the nozzle is often blocked by the outer objects of the ground, so that the diameter and the quality of a formed pile are limited.
The Chinese patent with the publication number of CN208749307U discloses a drill rod of a high-pressure jet grouting pile machine, which comprises a drill rod body, wherein a nozzle is arranged at the lower part of the drill rod body near a drill bit, a slurry conveying pipe is arranged in a hollow rod cavity of the drill rod body, and the bottom end of the slurry conveying pipe is communicated with the nozzle; the drill rod body is sleeved with a protective sleeve which blocks the nozzle when the drill rod is drilled down and staggers the nozzle when the drill rod is pulled up, and the drill rod body is also provided with a limiting device for limiting the upper limit position and the lower limit position of the protective sleeve. The drill rod can prevent the nozzle from being blocked in the drilling process of the drill rod; however, the protective sleeve is arranged on the periphery of the drill rod body, so that the protective sleeve is easily influenced by soil in the construction process.
Disclosure of Invention
In order to overcome the problems, the utility model provides a high-pressure jet grouting pile nozzle structure which can form uniform gas ring wrapped liquid jet and is not easy to be blocked by stratum foreign objects.
The technical scheme of the utility model is as follows:
a high-pressure jet grouting pile nozzle structure comprises a drill rod and a drill bit fixedly connected with the drill rod; two air outlet nozzles are symmetrically arranged at one end of the drill rod, which is close to the drill bit, and each air outlet nozzle is internally sleeved with a nozzle; the two air outlet nozzles are communicated with an air cavity arranged in the drill rod; the two nozzles are communicated with a slurry conveying pipe arranged in the air cavity; a movable cavity is also arranged in the drill rod, the movable cavity is arranged between the air cavity and the drill bit, and a partition board is arranged in the movable cavity; the outer edge of the partition plate extends out of the sealing plate towards the direction close to the air outlet nozzle, a sliding block is fixedly connected to one side of the partition plate close to the air cavity, and one side of the partition plate far away from the air cavity is connected with the drill bit through a spring; the bottom of the air cavity is provided with a through hole for the sliding block to move up and down, and when the sliding block moves up and down in the through hole, the sealing plate is driven to seal or expose the adjacent nozzle and the air outlet nozzle.
Further, a groove body which is used for accommodating the sealing plate and is matched with the sealing plate in shape is arranged in the drill rod, and the groove body is communicated with the two nozzles and the two air outlet nozzles; when the bottom of the sliding block is level with the bottom of the air cavity, the top of the sealing plate is abutted against the upper inner wall of the adjacent air outlet nozzle.
Further, the nozzle and the air outlet nozzle are flat.
Further, the cross sections of the partition plate and the sliding block are circular; the baffle is perpendicular to the sealing plate.
Further, two ends of the spring are fixedly connected with the partition plate and the drill bit respectively.
Further, the sliding block and the partition plate are of an integrated structure.
Further, the air cavity is connected with an air pipe for conveying compressed air; the gas pipe is arranged in the drill rod.
Further, the slurry conveying pipe is connected with a conveying pipe for conveying fluid; the conveying pipe is arranged in the drill rod.
The utility model has the following beneficial effects:
1. the nozzle is sleeved in the air outlet nozzle, so that compressed air sprayed by the air outlet nozzle forms a uniform air ring, water flow or cement paste which is arranged in the middle of the air outlet nozzle is coated and sprayed, fluid formed by mixing a cutting soil body and the water flow is blocked, the spraying energy is kept, the effective spraying distance is ensured, and the piling effect is good; meanwhile, the sliding block is arranged in the air cavity, and the sliding block is driven to move up and down by the air pressure formed in the air cavity by compressed air, so that the sealing plate connected with the sliding block seals or exposes the nozzle, and clay and sand in soil blocks the nozzle and the air outlet nozzle when the nozzle and the air outlet nozzle stop working, so that the injection distance is influenced.
Drawings
FIG. 1 is a side cross-sectional view of the present utility model with an outlet nozzle and nozzle closed.
Fig. 2 is a partial enlarged view at a of fig. 1.
FIG. 3 is a side cross-sectional view of the present utility model with the outlet nozzle and nozzle exposed.
Fig. 4 is a partial enlarged view at B of fig. 2.
Fig. 5 is a schematic view of the overall structure of the separator.
The reference numerals in the drawings are as follows:
1. a drill rod; 11. an air outlet nozzle; 12. a nozzle; 13. a tank body; 2. a drill bit; 3. an air cavity; 31. a through hole; 4. a slurry conveying pipe; 5. a movable chamber; 6. a partition plate; 61. a sealing plate; 62. a slide block; 7. a spring; 8. a gas pipe; 9. a conveying pipe.
Detailed Description
The utility model will now be described in detail with reference to the drawings and to specific embodiments.
Referring to fig. 1-5, a high pressure jet grouting pile nozzle structure comprises a drill rod 1 and a drill bit 2 fixedly connected with the drill rod; two air outlet nozzles 11 are symmetrically arranged at one end of the drill rod 1 close to the drill bit 2, and a nozzle 12 is sleeved in each air outlet nozzle 11; the two air outlet nozzles 11 are communicated with an air cavity 3 arranged in the drill rod 1; the two nozzles 12 are communicated with the slurry conveying pipe 4 arranged in the air cavity 3; a movable cavity 5 is also arranged in the drill rod 1, the movable cavity 5 is arranged between the air cavity 3 and the drill bit 2, and a baffle 6 is arranged in the movable cavity 5; the outer edge of the baffle plate 6 extends out of the sealing plate 61 towards the direction close to the air outlet nozzle 11, one side of the baffle plate 6 close to the air cavity 3 is fixedly connected with a sliding block 62, and one side of the baffle plate 6 far away from the air cavity 3 is connected with the drill bit 2 through a spring 7; the bottom of the air cavity 3 is provided with a through hole 31 for the slider 62 to move up and down, and when the slider 62 moves up and down in the through hole 31, the sealing plate 61 is driven to seal or expose the adjacent nozzle 12 and air outlet nozzle 11.
Further, a groove body 13 for accommodating the sealing plate 61 and adapting to the shape of the sealing plate is arranged in the drill rod, and the groove body 13 is communicated with the two nozzles 12 and the two air outlet nozzles 11; the sealing plate 61 is driven by the sliding block 62 to move up and down in the tank 13, when the bottom of the sliding block 62 is level with the bottom of the air cavity 3, the top of the sealing plate 61 abuts against the upper inner wall of the adjacent air outlet nozzle 11, so as to prevent the fluid in the slurry conveying pipe 4 from overflowing into the drill pipe 1.
Further, the nozzle 12 and the air outlet nozzle 11 are flat, so as to achieve better blocking effect by matching with the sealing plate 61.
Furthermore, the cross sections of the baffle plate 6 and the sliding block 62 are circular, so that the baffle plate and the sliding block can be better attached to the inner wall of the drill rod 1; the partition 6 is perpendicular to the seal plate 61.
Further, two ends of the spring 7 are fixedly connected with the partition plate 6 and the drill bit 2 respectively.
Further, the slider 62 and the partition 6 are integrally formed.
Further, the air cavity 3 is connected with an air pipe 8 for conveying compressed air; the gas pipe 8 is arranged in the drill rod 1.
Further, the slurry conveying pipe 4 is connected with a conveying pipe 9 for conveying fluid; the conveying pipe 9 is arranged in the drill rod 1.
The working principle of the utility model is as follows:
referring to fig. 1-5, when the nozzle 12 works, water is conveyed into the slurry conveying pipe 4 through the conveying pipe 9, compressed gas is conveyed into the air cavity 3 through the gas conveying pipe 8, air pressure in the air cavity 3 is enhanced, the sliding block 62 is enabled to displace downwards and drive the partition plate 6 connected with the sliding block to move downwards, when the top surface of the sliding block 62 moves downwards to be level with the bottom of the air cavity 3, the elastic force of the compressed spring 7 is equal to the pressure in the air cavity 3, the position of the sliding block 62 is kept stable, the sealing plate 61 moves to the position below the adjacent air outlet nozzle 11 in the groove body 13, the nozzle 12 and the air outlet nozzle 11 are completely exposed, the air ring sprayed by the air outlet nozzle 11 is sprayed out by wrapping the water flow, and the air ring rotates at a high speed along with the drill rod 1 to cut and stir soil; when the nozzle 12 stops working, compressed gas is suspended to be conveyed into the air cavity 3, at the moment, the elasticity of the spring 7 is larger than the pressure brought by air pressure, the sliding block 62 is influenced by the elasticity of the spring 7 to move upwards to drive the partition plate 6 to move upwards, when the bottom of the sliding block 62 is level with the bottom of the air cavity 3, the top of the sealing plate 61 abuts against the upper inner wall of the adjacent air outlet nozzle 11 to completely seal the nozzle 12 and the air outlet nozzle 11, so that the nozzle 12 and the air outlet nozzle 11 are prevented from being blocked by clay, sand and stone and other objects, subsequent spraying or unsmooth water spraying are avoided, the pile forming diameter is influenced, and the pile forming quality is reduced.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (8)
1. A high-pressure jet grouting pile nozzle structure comprises a drill rod (1) and a drill bit (2) fixedly connected with the drill rod; two air outlet nozzles (11) are symmetrically arranged at one end of the drill rod (1) close to the drill bit (2), and a nozzle (12) is sleeved in each air outlet nozzle (11); the two air outlet nozzles (11) are communicated with an air cavity (3) arranged in the drill rod (1); the two nozzles (12) are communicated with the slurry conveying pipe (4) arranged in the air cavity (3), and are characterized in that: a movable cavity (5) is further arranged in the drill rod (1), the movable cavity (5) is arranged between the air cavity (3) and the drill bit (2), and a partition board (6) is arranged in the movable cavity (5); the outer edge of the partition plate (6) extends out of the sealing plate (61) towards the direction close to the air outlet nozzle (11), a sliding block (62) is fixedly connected to one side of the partition plate (6) close to the air cavity (3), and one side of the partition plate (6) away from the air cavity (3) is connected with the drill bit (2) through a spring (7); the bottom of the air cavity (3) is provided with a through hole (31) for the sliding block (62) to move up and down, and when the sliding block (62) moves up and down in the through hole (31), the sealing plate (61) is driven to seal or expose the adjacent nozzle (12) and the adjacent air outlet nozzle (11).
2. A high pressure jet grouting pile nozzle structure according to claim 1, characterised in that: the drill rod is internally provided with a groove body (13) which is used for accommodating the sealing plate (61) and is matched with the shape of the sealing plate, and the groove body (13) is communicated with the two nozzles (12) and the two air outlet nozzles (11); when the bottom of the sliding block (62) is level with the bottom of the air cavity (3), the top of the sealing plate (61) is abutted against the upper inner wall of the adjacent air outlet nozzle (11).
3. A high pressure jet grouting pile nozzle arrangement according to claim 2, characterised in that: the nozzle (12) and the air outlet nozzle (11) are flat.
4. A high pressure jet grouting pile nozzle arrangement according to claim 2, characterised in that: the cross sections of the partition plate (6) and the sliding block (62) are circular; the partition plate (6) is perpendicular to the sealing plate (61).
5. A high pressure jet grouting pile nozzle structure according to claim 1, characterised in that: the two ends of the spring (7) are respectively fixedly connected with the baffle (6) and the drill bit (2).
6. A high pressure jet grouting pile nozzle arrangement according to claim 4, characterised in that: the sliding block (62) and the partition plate (6) are of an integrated structure.
7. A high pressure jet grouting pile nozzle structure according to claim 1, characterised in that: the air cavity (3) is connected with an air pipe (8) for conveying compressed air; the gas pipe (8) is arranged in the drill rod (1).
8. A high pressure jet grouting pile nozzle structure according to claim 1, characterised in that: the slurry conveying pipe (4) is connected with a conveying pipe (9) for conveying fluid; the conveying pipe (9) is arranged in the drill rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321246436.XU CN219993620U (en) | 2023-05-22 | 2023-05-22 | High-pressure jet grouting pile nozzle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321246436.XU CN219993620U (en) | 2023-05-22 | 2023-05-22 | High-pressure jet grouting pile nozzle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219993620U true CN219993620U (en) | 2023-11-10 |
Family
ID=88609405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321246436.XU Active CN219993620U (en) | 2023-05-22 | 2023-05-22 | High-pressure jet grouting pile nozzle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219993620U (en) |
-
2023
- 2023-05-22 CN CN202321246436.XU patent/CN219993620U/en active Active
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| GR01 | Patent grant | ||
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