CN212898358U

CN212898358U - Biliquid injection device based on biliquid jet grouting drilling tool

Info

Publication number: CN212898358U
Application number: CN202021422159.XU
Authority: CN
Inventors: 宗文光
Original assignee: Beijing Everbright Ruituo Engineering Technology Co ltd
Current assignee: Beijing Everbright Ruituo Engineering Technology Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-06
Anticipated expiration: 2030-07-17

Abstract

The utility model provides a biliquid injection device based on biliquid jet drill utensil for solve the inflexible, the unbalanced problem of pressure of biliquid filling opening. The double-liquid injection device is connected with an external driving device through driving connection, and fixes an inner pipe and an outer pipe, the first injection pipe is fixed on the upper part of the outer shell through a fastener and a sealing element and is communicated with the inner pipe, and the inner pipe is communicated with the inner cavity of the hollow inner drill rod; the second injection pipe is fixed on the upper part of the shell and communicated with an annular gap between the outer pipe and the inner pipe, and the outer pipe is fixedly connected with the hollow outer drill rod through a drill rod connecting piece. The utility model realizes the ultrahigh pressure injection by arranging the inner pipe and the outer pipe which are connected with the drill rod; through setting up annular reservoir, form a fluid ring between filling opening and pipeline, realize that the fluid that injects is balanced everywhere pressure, the transition between filling opening and pipeline is regarded as to the reservoir simultaneously, can change alone, does benefit to equipment maintenance and maintenance.

Description

Biliquid injection device based on biliquid jet grouting drilling tool

Technical Field

The utility model belongs to drilling tool equipment field, concretely relates to biliquid injection device based on drilling tool.

Background

In the building engineering, the drilling tool is not only a drilling tool, but also conveys fluid, drilling is completed by means of high-pressure fluid, or conveying drilling waste residues, or conveying cement slurry to reinforce the hole wall and form a foundation reinforcing pile and the like, and the conveyed fluid is generally output in a rotary spraying mode. The common rotary jetting drilling tool comprises a single-liquid rotary jetting drilling tool and a double-liquid rotary jetting drilling tool, wherein a pipeline is usually arranged in the drilling tool in a conveying mode, a pipeline injection port is reserved at the upper end of the drilling tool, and high-pressure fluid is injected into the pipeline through the injection port. However, the injection port is directly communicated with the conveying pipeline, so that the pressure at each position in the conveying pipeline cannot be ensured to be equal, and meanwhile, when the conveying pipeline is blocked, the injection port also needs to be replaced at the same time, which is not beneficial to equipment maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is in order to solve the balanced problem of the two liquid input pressure of jet grouting drilling tool, provides a two liquid injection device based on drilling tool, through setting up annular reservoir, forms a fluid ring between filling opening and pipeline, pours into fluid into through the fluid ring to pipeline, realizes that the fluid that pours into pressure everywhere is balanced, and the filling opening is regarded as the transition between filling opening and pipeline to the reservoir simultaneously, can change the filling tube alone, does benefit to equipment maintenance and maintenance.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

a biliquid injection device based on biliquid jet grouting drilling tool, the biliquid injection device includes: the device comprises a driving connecting device, a flange, a shell, a first injection pipe, an inner pipe, a second injection pipe, an outer pipe, a fastener, a sealing piece and a drill rod connecting piece; wherein,

one end of the driving connecting device is connected with an external driving device, and the other end of the driving connecting device is fixedly connected with the inner pipe and the outer pipe, is connected through a flange and penetrates through the shell;

the first injection pipe is fixed on the outer shell through a fastener and a sealing element and is communicated with the inner pipe, and the inner pipe is communicated with the hollow inner drill rod through a drill rod connecting piece; the second injection pipe is fixed in through fastener and sealing member on the shell, and with annular gap intercommunication between outer tube and the inner tube, the outer tube passes through drilling rod connecting piece and the outer drilling rod fixed connection of cavity formula, and outer tube cup joints outside the inner tube, with the inner tube with the axle center.

In the above scheme, the first annular groove is formed in the outer shell at the joint of the first injection pipe and the outer shell, and the first annular groove is communicated with the inner cavity of the inner pipe through the first through hole.

In the above scheme, the second annular groove is formed in the outer shell at the joint of the second injection pipe and the outer shell, and the second annular groove is communicated with the annular gap between the outer pipe and the inner pipe through the second through hole.

In the above scheme, at least two first injection pipes are uniformly distributed on the circumference of the upper part of the shell; the number of the second injection pipes is at least two, and the second injection pipes are uniformly distributed on the circumference of the lower part of the shell.

In the scheme, the first injection pipe injects high-pressure water, and the second injection pipe injects high-pressure cement paste; or the first injection pipe is injected with cement paste, and the second injection pipe is injected with water glass.

In the above scheme, the high pressure is greater than normal water pressure.

In the above scheme, the fixed connection is respectively provided with the corresponding sawtooth-shaped clamping grooves on the two end faces of the connecting end, and the detachable fixed connection is realized through a sawtooth occlusion mode.

More than synthesizing, the embodiment of the utility model provides a biliquid injection device based on biliquid jet grouting drill tool, include: the device comprises a driving connecting device, a flange, a shell, a first injection pipe, an inner pipe, a second injection pipe, an outer pipe, a fastener, a sealing piece and a drill rod connecting piece; one end of the driving connecting device is a free end and is connected with an external driving device, and the other end of the driving connecting device is fixedly connected with the inner pipe and the outer pipe, is connected through a flange and penetrates through the shell; the first injection pipe is fixed on the outer shell through a fastener and a sealing element and is communicated with the inner pipe, and the inner pipe is communicated with the hollow inner drill rod through a drill rod connecting piece; the second injection pipe is fixed on the shell through a fastener and a sealing element, and is communicated with the outer pipe, the outer pipe is communicated with the hollow outer drill pipe through a drill pipe connecting piece, and the outer pipe and the inner pipe are coaxial and sleeved outside the inner pipe. The double-liquid injection device of the utility model injects double liquid into the drilling tool through the arrangement of the inner pipe connected with the inner drill rod, the outer pipe beside the outer drill rod and the corresponding injection ports, thereby realizing ultrahigh pressure injection; through setting up annular reservoir, form a fluid ring between filling opening and pipeline, inject into the fluid through the fluid ring to pipeline, realize that the fluid that injects everywhere pressure is balanced, the transition between filling opening and pipeline is regarded as to the reservoir simultaneously, can change the filling tube alone, does benefit to equipment maintenance and maintenance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of a dual-fluid injection device according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of section A-A' of FIG. 1;

FIG. 3 is a schematic structural view of a section B-B' in FIG. 1.

Description of reference numerals:

1. a drive connection; 2. a flange; 3. a housing; 4. a first injection pipe; 41. a first annular groove; 42. a first through hole; 43. an inner tube; 44. an inner cavity of the inner tube; 5 a second injection pipe; 51. a second annular groove; 52. a second through hole; 53. an outer tube; 54. an annular gap; 6. a fastener; 7. a seal member; 8. a drill rod connector.

Detailed Description

The technical problems, technical solutions and advantages of the present invention will be explained in detail below with reference to exemplary embodiments. The exemplary embodiments described below are only for explaining the present invention and should not be construed as limiting the present invention. It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The embodiment of the utility model provides a biliquid injection device based on drilling tool, figure 1 shows to be based on biliquid injection device schematic structure of drilling tool. As shown in fig. 1, the dual fluid injection apparatus includes: the device comprises a driving connecting device 1, a flange 2, an outer shell 3, a first injection pipe 4, an inner pipe 43, a second injection pipe 5, an outer pipe 53, a fastener 6, a sealing member 7 and a drill rod connecting piece 8.

One end of the driving connecting device 1 is a free end and is used for connecting an external driving device, and the other end of the driving connecting device is fixedly connected with the inner pipe 43 and the outer pipe 53, is connected through the flange 2 and penetrates through the shell 3; the first injection pipe 4 is fixed on the outer shell 3 through a fastener 6 and a sealing element 7 and is communicated with the inner pipe 43, and the inner pipe is communicated with the hollow inner drill pipe inner cavity through a drill pipe connecting piece 8; the second injection pipe 5 is fixed in through fastener 6 and sealing member 7 on the shell 3, and with annular gap intercommunication between outer tube 53 and the inner tube 43, the outer tube passes through drill rod connecting piece 8 and the outer drilling rod fixed connection of cavity formula, and outer tube and inner tube are coaxial, cup joint outside the inner tube.

FIG. 2 is a schematic cross-sectional view taken along line A-A' of FIG. 1. As shown in fig. 2, the first injection pipe 4 is connected to the outer casing 3, and the outer casing has a first annular groove 41, and the first annular groove 41 is communicated with the inner cavity 44 of the inner pipe 43 through a first through hole 42. When the first fluid is injected through said first injection pipe 4, it first enters the annular groove 41, which serves as a reservoir for the fluid, where it first arrives after injection. Taking water as an example, the water forms a water ring at the annular groove 41, and the pressure in the water ring is uniform. The high pressure water in the water ring flows through the through holes 42 into the inner cavity 44 of the inner tube 43. The inner tube 43 is in communication with the inner drill pipe and the high pressure water entering the inner tube cavity 44 enters the inner drill pipe cavity and is delivered to the drill bit.

FIG. 3 is a schematic cross-sectional view of B-B' in FIG. 1. As shown in fig. 3, the second injection pipe 5 is connected to the outer casing 3, and a second annular groove 51 is formed in the outer casing, and the second annular groove 51 communicates with an annular gap 54 between the outer pipe 53 and the inner pipe 43 through a second through hole 52. When the second fluid is injected through said second injection pipe 5, the annular groove here acts as a reservoir for the fluid, as the place where the fluid first arrives after injection. Taking water as an example, the water firstly enters the annular groove 51, a water ring is formed at the annular groove 51, and the pressure in the water ring is uniform. The high pressure water within the water ring flows through the through holes 52 into the annular gap 54. The outer tube 53 is fixedly connected to the outer drill rod and the high pressure water entering the annular gap 54 is delivered to the drill bit through the annular gap between the outer drill rod and the inner drill rod.

The number of the first injection pipes 4 is at least two, and the first injection pipes are uniformly distributed on the circumference of the upper part of the shell 3; the number of the second injection pipes 5 is at least two, and the second injection pipes are uniformly distributed on the circumference of the lower part of the shell 3. Preferably, the first injection pipe 4 has four, and the through holes communicating with the annular groove 41 have eight; the second injection pipe 5 has four and the through hole communicating with the annular groove 51 has eight.

In the above-described embodiment, the first injection pipe 3 injects high-pressure water, and the second injection pipe 4 injects high-pressure cement slurry; alternatively, the first injection pipe 3 is injected with cement paste, and the second injection pipe 4 is injected with water glass. In practical application, the liquid injected into the first injection pipe and the second injection pipe is determined according to actual requirements.

The high pressure in this embodiment is greater than normal water pressure. In this embodiment, the pressure of the conveyed high-pressure water, high-pressure cement paste or high-pressure water glass can reach 40 MPa.

In the above-mentioned embodiments, the fixed connections are all detachable connections. Preferably, set up corresponding zigzag draw-in groove respectively on two terminal surfaces of link, realize dismantling fixed connection through the mode of sawtooth interlock.

The present invention has been described in detail with reference to the embodiments, but the description is only exemplary of the present invention and should not be construed as limiting the scope of the present invention. The protection scope of the present invention is defined by the claims. Technical scheme, or technical personnel in the field are in the utility model technical scheme's inspiration the utility model discloses an essence and protection within range, design similar technical scheme and reach above-mentioned technological effect, perhaps to the impartial change that application scope was made and improve etc. all should still belong to within the protection scope is covered to the patent of the utility model. It should be noted that for the sake of clarity, parts of the description of the invention have been omitted which do not have a direct obvious relationship with the scope of protection of the invention, but which are known to the skilled person.

Claims

1. The utility model provides a biliquid injection device based on biliquid jet grouting drill, its characterized in that, biliquid injection device includes: the device comprises a driving connecting device, a flange, a shell, a first injection pipe, an inner pipe, a second injection pipe, an outer pipe, a fastener, a sealing piece and a drill rod connecting piece; wherein,

the first injection pipe is fixed on the outer shell through a fastener and a sealing element and is communicated with the inner pipe, and the inner pipe is communicated with the hollow inner drill rod through a drill rod connecting piece; the second injection pipe is fixed on the outer shell through a fastener and a sealing element and is communicated with the annular gap between the outer pipe and the inner pipe; the outer pipe is fixedly connected with the hollow outer drill rod through a drill rod connecting piece, and the outer pipe is sleeved outside the inner pipe and coaxial with the inner pipe.

2. The dual fluid injection apparatus as claimed in claim 1, wherein the outer housing has a first annular groove formed therein at a junction of the first injection tube and the outer housing, the first annular groove communicating with the inner chamber of the inner tube through the first through hole.

3. The dual fluid injection apparatus as claimed in claim 1 or 2, wherein the outer housing has a second annular groove formed therein at a junction of the second injection pipe and the outer housing, the second annular groove communicating with the annular gap between the outer pipe and the inner pipe through a second through hole.

4. The dual fluid injection apparatus as claimed in claim 3, wherein the first injection pipes are at least two and uniformly distributed on the circumference of the upper portion of the housing; the number of the second injection pipes is at least two, and the second injection pipes are uniformly distributed on the circumference of the lower part of the shell.

5. The dual fluid injection apparatus as claimed in claim 3, wherein the first injection pipe injects high pressure water, and the second injection pipe injects high pressure cement slurry; or the first injection pipe is injected with cement paste, and the second injection pipe is injected with water glass.