CN215949376U - Novel high-pressure rotary jet drill bit - Google Patents
Novel high-pressure rotary jet drill bit Download PDFInfo
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- CN215949376U CN215949376U CN202120460835.0U CN202120460835U CN215949376U CN 215949376 U CN215949376 U CN 215949376U CN 202120460835 U CN202120460835 U CN 202120460835U CN 215949376 U CN215949376 U CN 215949376U
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Abstract
The utility model is a new kind of high-pressure rotary jet drill bits; it includes the column body, characterized by: the mud pipe, the high-pressure water pipe and the high-pressure gas transmission high-pressure nozzle are arranged on the outer wall of the upper portion of the columnar body, the mud nozzle is arranged on the outer wall of the lower portion of the columnar body, and the low-pressure nozzle is arranged on the end face of the bottom of the columnar body. This jet-grouting drill bit compares with traditional single pipeline jet-grouting drill bit, the two way high pressure water pipes that the symmetry set up has been adopted, two way high pressure gas pipe's cutting function design, thereby can avoid the inhomogeneous problem of cutting of unilateral cutting function design, and simultaneously, this jet-grouting drill bit sets up the low pressure apopore in the bottom, thereby can go ahead of time and wash the operation to the hole bottom when the operation, later cut the operation to the hole body through the high pressure nozzle on drill bit upper portion again, carry out the operation of filling of mud with independent mud export at last, so, the cutting effect of pore wall has been guaranteed promptly, the closely knit degree of mud of the pile body has been guaranteed again, thereby the pile forming quality of jet-grouting pile has been improved.
Description
Technical Field
The utility model relates to the field of drilling tools, in particular to a novel high-pressure rotary jet drill bit.
Background
At present, the high-pressure rotary jet drill bit is generally in a form of combining 1 guniting port and 1 water spraying port, and adopts high-pressure water to cooperate with compressed air to cut a soil body and cooperate with low-pressure grout to form a pile. The high-pressure rotary jet drill bit has the defects that overlarge compressed air flow forms large disturbance on the periphery; the problems of insufficient high-pressure jet cutting energy, uneven compressed air delivery and limited pile forming diameter. Meanwhile, the pressure of a nozzle of the traditional jet grouting pile is not high, so that the hole wall cannot be thoroughly cleaned.
Disclosure of Invention
The utility model aims to overcome the defects and provides a multi-hole drill bit separating grouting from hole cleaning.
In order to achieve the above object, the present invention is realized by:
a novel high-pressure rotary jet drill bit comprises a columnar body, a slurry pipe, a high-pressure water delivery pipe, a high-pressure gas delivery pipe, a high-pressure nozzle, a slurry nozzle and a low-pressure nozzle; the two high-pressure nozzles are respectively arranged on the outer wall of the upper part of the columnar body, the slurry nozzle is arranged on the outer wall of the lower part of the columnar body, and the low-pressure nozzle is arranged on the end face of the bottom of the columnar body; the high-pressure nozzles and the slurry nozzles are arranged on the same plane or on two planes which are vertically distributed, each high-pressure nozzle is connected with one high-pressure water conveying pipe and one high-pressure gas conveying pipe, and the slurry pipe penetrates through the columnar body along the axial direction of the columnar body and is respectively connected with the slurry nozzles and the low-pressure nozzles.
The novel high-pressure rotary spraying drill bit comprises a nozzle and an air cap, wherein the high-pressure water delivery pipe and the high-pressure air delivery pipe are arranged in a columnar body, the nozzle and the air cap are respectively connected with the high-pressure water delivery pipe and the high-pressure air delivery pipe, and the nozzle and the air cap are arranged in a sleeved mode.
The novel high-pressure rotary jet drill bit further comprises an elastic sealing element, a gap is formed between the nozzle and the air cap, the high-pressure air conveying pipe is led to the air chamber, the elastic sealing element is arranged between the air chamber and the air cap, so that pressure gas is formed in the air chamber and finally the elastic sealing element is forced to generate elastic deformation through pressure, and annular pressure gas is formed to be ejected outwards.
The novel high-pressure rotary jet drill bit is characterized in that a gap between the nozzle and the air cap is an annular space which surrounds the outer side of the nozzle in an annular mode, and the elastic sealing element is also an annular component.
According to the novel high-pressure rotary jet drill bit, the low-pressure nozzle comprises a water inlet pipe orifice, a pressure driving valve and a water outlet pipe orifice, and the water inlet pipe orifice, the pressure driving valve and the water outlet pipe orifice are all arranged at the bottom of the columnar body; the water inlet pipe orifice and the water outlet pipe orifice are connected in series, and a pressure driving valve is also connected in series between the water inlet pipe orifice and the water outlet pipe orifice; the pressure driven valve is default to be in an open state, so that water can enter the water inlet pipe orifice and is ejected outwards through the water outlet pipe orifice; when the pressure-driven valve is pressed, the valve is changed into a closed state, so that the water flow between the water inlet pipe orifice and the water outlet pipe orifice is cut off.
Neotype high pressure jet drill bit, pressure drive valve sets up the bottom at the column body, pressure drive valve includes valve rod, case, reset spring and end cover, wears to establish reset spring between valve rod and the case, the end cover setting is at the terminal surface of column body bottom and with valve rod, case, reset spring seal among the column body.
The novel high-pressure rotary jet drill bit is characterized in that the water inlet pipe orifice is annular and is horizontally arranged along the radial direction of the drill bit body, the water outlet pipe orifice is arranged in a hollow pipe section, and the pipe section is arranged in the valve rod in a penetrating mode.
The novel high-pressure rotary jet drill bit is characterized in that a slurry nozzle comprises a nozzle base and a nozzle body which are connected with a slurry pipe, and the diameter of a slurry outlet of the nozzle body is smaller than that of a slurry outlet of the nozzle base.
The novel high-pressure rotary jet drill bit further comprises a mud discharge valve, wherein the mud discharge valve, the high-pressure nozzle and the mud nozzle are sequentially arranged from the bottom of the drill bit to the top: a slurry nozzle, a sludge discharge valve and a high-pressure nozzle; at the moment, the spacing distance between the slurry nozzle and the sludge discharge valve is not less than 1000mm, and the spacing distance between the sludge discharge valve and the high-pressure nozzle is not less than 500 mm; or the slurry nozzle, the high-pressure nozzle and the mud discharge valve are sequentially arranged from the bottom of the drill bit to the top; at the moment, the spacing distance between the mud nozzle and the high-pressure nozzle is not less than 1000mm, and the spacing distance between the mud discharge valve and the high-pressure nozzle is not less than 500 mm.
This jet-grouting drill bit adopts above-mentioned structural design, it compares with traditional single pipeline jet-grouting drill bit, two way high-pressure water pipes that the symmetry set up, two way high-pressure trachea's cutting function design, thereby when can avoiding unilateral cutting function, the drilling tool yawing force is too big, the easy rupture problem, simultaneously, this jet-grouting drill bit sets up the low pressure apopore in the bottom, thereby can carry out cleaning operation to the hole bottom earlier when the operation, avoid the drilling in-process, the harm of bottom barrier to the drilling tool, later cut the operation to the hole body through the high-pressure nozzle on drilling bit upper portion, carry out the pile-forming operation of high-pressure mud with independent mud export at last, so, the cutting effect of pore wall has been guaranteed promptly, the mud density of pile body has been guaranteed again, thereby the pile-forming quality of jet-grouting pile has been improved.
Drawings
Fig. 1 is an assembly view of the high pressure jet grouting drill bit in the present embodiment.
Fig. 2 is an assembly view of the high pressure nozzle in this embodiment.
FIG. 3 is an assembly view of the low pressure nozzle of this embodiment.
FIG. 4 is an assembly view of the mud nozzle of the present embodiment.
Fig. 5 is an assembly view of the present embodiment with a mud valve.
Detailed Description
The utility model is further illustrated by the following specific examples.
As shown in fig. 1, a novel high-pressure rotary jet drill comprises a columnar body 1, a mud pipe 2, a high-pressure water delivery pipe 3, a high-pressure gas delivery pipe 4, a high-pressure nozzle 5, a mud nozzle 6 and a low-pressure nozzle 7; the two high-pressure nozzles 5 are respectively arranged on the outer wall of the upper part of the columnar body 1, the slurry nozzle 6 is arranged on the outer wall of the lower part of the columnar body 1, and the low-pressure nozzle 7 is arranged on the end face of the bottom part of the columnar body 1; the high-pressure nozzles 5 and the slurry nozzles 6 are arranged on the same plane or on two planes which are vertically distributed, each high-pressure nozzle 5 is connected with one high-pressure water delivery pipe 3 and one high-pressure gas delivery pipe 4, and the slurry pipe 2 penetrates through the columnar body 1 along the axial direction of the columnar body 1 and is respectively connected with the slurry nozzles 6 and the low-pressure nozzles 7.
As shown in fig. 2, the high-pressure nozzle 5 of the novel high-pressure jet drill comprises a nozzle 51 and an air cap 62, the high-pressure water pipe 3 and the high-pressure air pipe 4 are both arranged in the columnar body 1, the nozzle 51 and the air cap 52 are respectively connected with the high-pressure water pipe 3 and the high-pressure air pipe 4, and the nozzle 51 and the air cap 52 are arranged in a nesting manner.
The novel high-pressure rotary jet drill bit further comprises an elastic sealing element 53, a gap is formed between the nozzle 51 and the air cap 52, the high-pressure air conveying pipe 4 is led to the air chamber, the elastic sealing element 53 is arranged between the air chamber and the air cap 52, so that pressure air is formed in the air chamber, the elastic sealing element 53 is forced to generate elastic deformation through pressure, and the pressure air is ejected outwards.
In the water outlet nozzle structure of the high-pressure jet drill, the gap between the nozzle 51 and the air cap 52 is an annular space which annularly surrounds the outer side of the nozzle 51, and the elastic sealing member 53 is also an annular part.
As shown in fig. 3, in the novel high-pressure jet drill, the low-pressure nozzle 7 includes a water inlet pipe orifice 71, a pressure-actuated valve 72 and a water outlet pipe orifice 73, and the water inlet pipe orifice 71, the pressure-actuated valve 72 and the water outlet pipe orifice 73 are all arranged at the bottom of the columnar body 1; the water inlet pipe orifice 71 and the water outlet pipe orifice 73 are connected in series, and a pressure driving valve 72 is also connected in series between the water inlet pipe orifice 71 and the water outlet pipe orifice 73; the pressure-actuated valve 72 is default to an open state, so that water can enter the water inlet pipe orifice 71 and is ejected outwards through the water outlet pipe orifice 73; when the pressure-driven valve 72 is pressurized, it becomes a closed state, and the flow of water between the inlet nozzle 71 and the outlet nozzle 72 is cut off.
Novel high pressure jet drill bit, pressure drive valve sets up the bottom at the column body, pressure drive valve 73 includes valve rod 731, case 732, reset spring 733 and end cover 734, wears to establish reset spring 733 between valve rod 731 and the case 732, and end cover 734 sets up the terminal surface at column body bottom and seals valve rod, case, reset spring among the column body.
The novel high-pressure rotary jet drill bit is characterized in that the water inlet pipe orifice is annular and is horizontally arranged along the radial direction of the drill bit body, the water outlet pipe orifice is arranged in a hollow pipe section, and the pipe section is arranged in the valve rod in a penetrating mode.
As shown in FIG. 4, the slurry nozzle 6 of the novel high-pressure rotary jet drill bit comprises a nozzle base 61 connected with the slurry pipe 2 and a nozzle body 62, and the diameter of a slurry outlet of the nozzle body is smaller than that of a slurry outlet of the nozzle base.
As shown in fig. 5, the novel high-pressure rotary jet drill bit further comprises a mud discharge valve, wherein the mud discharge valve, the high-pressure nozzle and the mud nozzle are sequentially arranged from the bottom of the drill bit to the top: a slurry nozzle, a sludge discharge valve and a high-pressure nozzle; at the moment, the spacing distance between the slurry nozzle and the sludge discharge valve is not less than 1000mm, and the spacing distance between the sludge discharge valve and the high-pressure nozzle is not less than 500 mm; or the slurry nozzle, the high-pressure nozzle and the mud discharge valve are sequentially arranged from the bottom of the drill bit to the top; at the moment, the spacing distance between the slurry nozzle and the high-pressure nozzle is not less than 1000mm, and the spacing distance between the slurry discharge valve and the high-pressure nozzle is not less than 500 mm; the sludge discharge valve can refer to the sludge discharge structure disclosed in 201720233415.2.
This jet-grouting drill bit adopts above-mentioned structural design, it is compared with traditional single pipeline jet-grouting drill bit soon, two way high-pressure water pipes that the symmetry set up have been adopted, two way high-pressure water pipe's cutting function design, thereby can avoid the inhomogeneous problem of cutting of unilateral cutting function design, and simultaneously, this jet-grouting drill bit sets up the low pressure apopore in the bottom, thereby can go ahead of time to the hole end and wash the operation when the operation, later cut the operation through the high pressure nozzle on drill bit upper portion to the hole body again, carry out the operation of filling of mud with independent mud export at last, so, the cutting effect of pore wall has been guaranteed promptly, the closely knit degree of mud of the pile body has been guaranteed again, thereby jet-grouting pile's pile quality has been improved.
Claims (9)
1. The utility model provides a novel high pressure jet drill bit, its includes the column body, characterized by: the device also comprises a slurry pipe, a high-pressure water delivery pipe, a high-pressure gas delivery pipe, a high-pressure nozzle, a slurry nozzle and a low-pressure nozzle; the number of the high-pressure nozzles is two, the high-pressure nozzles are respectively and uniformly distributed on the outer wall of the upper part of the columnar body, the number of the slurry nozzles is 1-2, the slurry nozzles are respectively and uniformly distributed on the outer wall of the lower part of the columnar body, and the low-pressure nozzles are arranged on the end face of the bottom of the columnar body; the high-pressure nozzles and the slurry nozzles are arranged on the same plane or on two planes which are vertically distributed, each high-pressure nozzle is connected with a high-pressure water delivery pipe and a high-pressure gas delivery pipe, the slurry pipe penetrates through the columnar body along the axial direction of the columnar body and is respectively connected with the slurry nozzles and the low-pressure nozzles, and the slurry nozzles are connected with a high-pressure slurry pipe and a compressed gas pipe.
2. The novel high pressure jet rotary drill bit according to claim 1, characterized in that: the high-pressure nozzle comprises a nozzle and an air cap, the high-pressure water delivery pipe and the high-pressure air delivery pipe are both arranged in the columnar body, the nozzle and the air cap are respectively connected with the high-pressure water delivery pipe and the high-pressure air delivery pipe, and the nozzle and the air cap are arranged in a sleeved mode.
3. The novel high pressure jet rotary drill bit as claimed in claim 2, wherein: the high-pressure gas transmission pipe is communicated with the gas chamber, and the elastic sealing element is arranged between the gas chamber and the gas cap, so that pressure gas is formed in the gas chamber and finally the elastic sealing element is forced to generate elastic deformation through pressure, and the pressure gas is ejected outwards.
4. The novel high pressure jet rotary drill bit as claimed in claim 3, wherein: the gap between the nozzle and the gas cap is an annular space surrounding the outside of the nozzle and the resilient seal is also an annular member.
5. The novel high pressure jet rotary drill bit according to claim 1, characterized in that: the low-pressure nozzle comprises a water inlet pipe orifice, a pressure driving valve and a water outlet pipe orifice, and the water inlet pipe orifice, the pressure driving valve and the water outlet pipe orifice are all arranged at the bottom of the columnar body; the water inlet pipe orifice and the water outlet pipe orifice are connected in series, and a pressure driving valve is also connected in series between the water inlet pipe orifice and the water outlet pipe orifice; the pressure driven valve is default to be in an open state, so that water can enter the water inlet pipe orifice and is ejected outwards through the water outlet pipe orifice; when the pressure-driven valve is pressed, the valve is changed into a closed state, so that the water flow between the water inlet pipe orifice and the water outlet pipe orifice is cut off.
6. The novel high pressure jet rotary drill bit according to claim 5, characterized in that: the pressure driven valve is arranged at the bottom end of the columnar body and comprises a valve rod, a valve core, a reset spring and an end cover, the reset spring is arranged between the valve rod and the valve core in a penetrating mode, and the end cover is arranged on the end face of the bottom end of the columnar body and seals the valve rod, the valve core and the reset spring in the columnar body.
7. The novel high pressure jet rotary drill bit according to claim 5, characterized in that: the water inlet pipe orifice is annular and is horizontally arranged along the radial direction of the drill bit body, the water outlet pipe orifice is arranged in a hollow pipe section, and the pipe section is arranged in the valve rod in a penetrating mode.
8. The novel high pressure jet rotary drill bit according to claim 1, characterized in that: the mud nozzle comprises a nozzle base and a nozzle body, wherein the nozzle base is connected with a mud pipe, and the diameter of a mud outlet of the nozzle body is smaller than that of a mud outlet of the nozzle base.
9. The novel high-pressure rotary jet drill bit as claimed in claim 1 or 5, characterized in that: still include row's mud valve, arrange from the ascending order of arranging in drill bit bottom between mud valve, high pressure nozzle, the mud nozzle three and do in proper order: a slurry nozzle, a sludge discharge valve and a high-pressure nozzle; according to different use requirements of the drilling tool, the high-pressure nozzle can also spray high-pressure slurry, and the slurry nozzle can spray high-pressure water; at the moment, the spacing distance between the mud nozzle and the mud discharge valve is not less than 1000mm, and the spacing distance between the mud discharge valve and the high-pressure nozzle is not less than 500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120460835.0U CN215949376U (en) | 2021-03-03 | 2021-03-03 | Novel high-pressure rotary jet drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120460835.0U CN215949376U (en) | 2021-03-03 | 2021-03-03 | Novel high-pressure rotary jet drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN215949376U true CN215949376U (en) | 2022-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120460835.0U Active CN215949376U (en) | 2021-03-03 | 2021-03-03 | Novel high-pressure rotary jet drill bit |
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| Country | Link |
|---|---|
| CN (1) | CN215949376U (en) |
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2021
- 2021-03-03 CN CN202120460835.0U patent/CN215949376U/en active Active
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