CN210798991U - Nozzle structure for spraying concrete - Google Patents
Nozzle structure for spraying concrete Download PDFInfo
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- CN210798991U CN210798991U CN201921040849.6U CN201921040849U CN210798991U CN 210798991 U CN210798991 U CN 210798991U CN 201921040849 U CN201921040849 U CN 201921040849U CN 210798991 U CN210798991 U CN 210798991U
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- inner sleeve
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Abstract
The utility model discloses a shower nozzle structure for spraying concrete. The spray head structure for spraying concrete comprises a concrete conveying section, a mixing section and a spraying section which are sequentially connected, wherein the mixing section comprises a first inner sleeve, a first outer sleeve, a cavity formed between the first inner sleeve and the first outer sleeve, an accelerator conveying pipe which penetrates through the first outer sleeve and is communicated with the cavity, and a drainage plate which is perpendicular to the concrete flow direction and is connected with the inner wall of the first inner sleeve; the wall of the first inner sleeve pipe is provided with a through hole for the accelerator to pass through; the injection section comprises a second outer sleeve and a second inner sleeve, the second inner sleeve is rotatable, and the inner wall of the second inner sleeve is provided with a vortex structure driving the second inner sleeve to rotate. It can be seen that the utility model discloses a resilience volume that is used for shotcrete's shower nozzle structure's simple structure enables concrete and accelerator and air intensive mixing and rotatory blowout, reduces concrete spraying.
Description
Technical Field
The utility model relates to a technique of shotcrete among tunnel preliminary bracing specifically is a sprinkler structure for shotcrete.
Background
In the construction of tunnel preliminary bracing, the concrete spraying is a very important process of preliminary bracing, at present, the concrete spraying technology is to utilize compressed gas or other modes to provide power by means of a concrete sprayer, and spray the concrete to a sprayed surface by a nozzle, so that the concrete can be quickly solidified and hardened, thereby achieving the purpose. The key point of the technology lies in whether the concrete is uniformly mixed under the action of the accelerator and the air and whether the sprayed concrete is uniform, which has great influence on reducing the resilience of the concrete and improving the construction quality. Current nozzle structure pours into accelerator and air into through the outer wall and makes inside concrete can with its contact after direct injection receive the spray face on, make intraductal concrete only be close to the partial contact of nozzle inner wall and obtain the accelerator, and the concrete that is located the center does not with accelerator intensive mixing, thereby can not solidify after the blowout rapidly, the rebound volume of spraying concrete when having increased the construction, and the dust concentration who produces improves, seriously influence the construction environment, it is inhomogeneous to make the concrete that erupts simultaneously easily, influence the injection effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a make intraductal concrete ectonexine homoenergetic and accelerating agent and air contact, mix more abundant even, the rotatory spun sprinkler head structure of concrete to reduce the rebound volume that the concrete sprays.
In order to achieve the above object, the present invention provides a nozzle structure for spraying concrete. This a shower nozzle structure for spraying concrete carries section, mixing section and injection section including the concrete that connects gradually, its characterized in that: the mixing section comprises a first inner sleeve, a first outer sleeve, a cavity formed between the first inner sleeve and the first outer sleeve, an accelerator conveying pipe communicated with the cavity after penetrating through the first outer sleeve, and a drainage plate which is perpendicular to the flow direction of concrete and is connected with the inner wall of the first inner sleeve; the wall of the first inner sleeve pipe is provided with a through hole for the accelerator to pass through; the injection section comprises a second outer sleeve and a second inner sleeve, the second inner sleeve is rotatable, and the inner wall of the second inner sleeve is provided with a vortex structure driving the second inner sleeve to rotate.
Above the drainage plate, the concrete produces the torrent phenomenon under the effect in drainage hole for the concrete carries out comparatively abundant mixture tentatively with accelerator and air. In the below of drainage plate, the concrete of preliminary mixing is shunted by the drainage hole and is flowed for the area of contact of concrete and accelerator and air is showing the increase, further promotes the homogeneity of mixing. Vortex is generated in the concrete through the vortex structure, so that the second inner sleeve is driven to rotate, the mixed concrete is rotationally sprayed out, and the accuracy and the uniformity of the sprayed concrete are enhanced. It can be seen that the utility model discloses a resilience volume that is used for shotcrete's shower nozzle structure's simple structure enables concrete and accelerator and air intensive mixing and rotatory blowout, reduces concrete spraying.
Furthermore, the vortex structure comprises a diameter-reducing inlet section and an diameter-expanding outlet section which are sequentially arranged along the flowing direction of the concrete, and a plurality of rifling strips which are annularly distributed and have the same rotating direction are arranged at the joint of the diameter-reducing inlet section and the diameter-expanding outlet section; and/or the first inner sleeve and the second inner sleeve are connected in a nested manner, and the second inner sleeve and the second outer sleeve are connected through an embedded bearing. Under the change of the pipe diameters of the reducing inlet section and the expanding outlet section, the concrete bears the rapid change of pressure at the joint of the reducing inlet section and the expanding outlet section, so that the concrete is arranged at the joint of the reducing inlet section and the expanding outlet section to excite a strong vortex, and under the reaction force of the vortex, the second inner sleeve rotates, so that the concrete is rotationally sprayed out. Moreover, the connection mode of the nesting and the bearing connection is convenient for the independent rotation of the second inner sleeve and the disassembly and the maintenance.
Further, the rifling strips are connected with the threaded holes in the second inner sleeve through screws. Therefore, disassembly, assembly and maintenance are convenient.
Furthermore, the pipe wall of the first inner sleeve is provided with a plurality of circles of through holes distributed along the concrete flow direction, and the upper part and the lower part of the drainage plate are provided with the through holes. From this, promote the effective contact time of concrete and accelerator and air of drainage plate upper portion and lower part to mix more evenly. The through holes distributed along the flowing direction of the concrete do not allow the concrete to flow back in the through holes.
Furthermore, the drainage plate on be equipped with the first drainage hole that extends from the outside of drainage plate upper surface to the lower surface inboard and the second drainage hole that extends from the inboard downward surface outside of drainage plate upper surface. From this, intraductal concrete is through the replacement of the ectonexine of drainage plate, makes inlayer and outer concrete homoenergetic and accelerator and air direct contact, is showing and is improving mixing efficiency, reduces the resilience volume of shotcrete, and the intensive mixing's concrete can prevent that the concrete from spraying and form dust pollution, has optimized the construction environment.
Further, the first drainage holes and the second drainage holes are circumferentially arranged and are arranged in a crossed manner. Therefore, the inner and outer layer replacement effect is improved.
Furthermore, a sealing ring is arranged at the joint of the first inner sleeve and the first outer sleeve. This prevents the quick-setting admixture from flowing out.
Furthermore, the concrete conveying section is provided with a third outer sleeve and a third inner sleeve, the third inner sleeve and the first inner sleeve are of an integrated structure and are connected with the concrete conveying pipe, and the first outer sleeve, the second outer sleeve and the third outer sleeve form an integrated detachable shell structure. Therefore, the structure is simple, and the disassembly, the assembly and the maintenance are convenient.
Furthermore, the shell structure is formed by splicing two mutually symmetrical semi-cylindrical shells, the splicing position of one side is hinged through a hinge, and the splicing position of the other side is connected through a bolt assembly. Therefore, the open-close type shell structure is simple in structure and convenient to clean and maintain the spray head.
Further, the diameter of the first inner sleeve is larger than the diameter of the second and third inner sleeves. Therefore, the first inner sleeve is locally widened, and concrete is prevented from being blocked by the drainage plate.
It can be seen that the utility model discloses a resilience volume that is used for shotcrete's shower nozzle structure's simple structure enables concrete and accelerator and air intensive mixing and rotatory blowout, reduces concrete spraying.
Drawings
The accompanying drawings, which form a part hereof, are included to provide an understanding of the present invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is an external structural schematic view of the structure of the concrete-spraying head of the present invention.
Fig. 2 is a schematic view of the internal structure of the nozzle structure for spraying concrete according to the present invention.
Fig. 3 is a top view of the drainage plate of the nozzle structure for spraying concrete of the present invention.
Fig. 4 is the utility model discloses a concrete flow diagram in the drainage plate among the shower nozzle structure for spray concrete.
Fig. 5 is a top view of a spraying section of the structure of the spray head for spraying concrete according to the present invention.
The relevant references in the above figures are:
1: a mixing section;
11: a first outer sleeve;
12: a first inner sleeve;
121: a through hole;
13: a cavity;
14: a drainage plate;
141: a first drainage aperture;
142: a second drainage aperture;
15: a delivery pipe for an accelerator;
16: a seal ring;
2: a spraying section;
21: a second outer sleeve;
22: a second inner sleeve;
221: reducing the diameter of the inlet section;
222: expanding the diameter of the outlet section;
23: compounding strips;
24: a bearing;
25: a screw;
3: a concrete conveying section;
31: a third outer sleeve;
32: a third inner sleeve;
4: a concrete delivery pipe;
5: a housing structure;
51: a bolt assembly;
52: and (7) a hinge.
Detailed Description
The present invention will be described more fully with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before the present invention is described with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in each part including the following description may be combined with each other without conflict.
Moreover, the embodiments of the invention described in the following description are generally only examples of a subset of the invention, and not all examples. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.
With respect to the terms and units of the present invention. The terms "comprising," "having," and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.
The structure of the spray head for spraying concrete as shown in fig. 1 to 5 comprises a concrete conveying section 3, a mixing section 1 and a spraying section 2 which are connected in sequence.
The mixing section 1 comprises a first inner sleeve 12, a first outer sleeve 11, a cavity 13 formed between the first inner sleeve 12 and the first outer sleeve 11, an accelerator conveying pipe 15 which penetrates through the first outer sleeve 11 and is communicated with the cavity 13, and a drainage plate 14 which is perpendicular to the concrete flow direction and is connected with the inner wall of the first inner sleeve 12; the pipe wall of the first inner sleeve 12 is provided with a plurality of circles of through holes 121 distributed along the concrete flow direction, and the upper part and the lower part of the drainage plate 14 are provided with the through holes 121. The drainage plate 14 is provided with a first drainage hole 141 extending from the outer side of the upper surface of the drainage plate 14 to the inner side of the lower surface and a second drainage hole 142 extending from the inner side of the upper surface of the drainage plate 14 to the outer side of the lower surface. The first and second drainage holes 141 and 142 are arranged circumferentially and cross. And a sealing ring 16 is arranged at the joint of the first inner sleeve 12 and the first outer sleeve 11.
The injection section 2 comprises a second outer sleeve 21 and a second inner sleeve 22, the second inner sleeve 22 can rotate, and the inner wall of the second inner sleeve 22 is provided with a vortex structure for driving the second inner sleeve 22 to rotate. The first inner sleeve 12 is connected with the second inner sleeve 22 in a nested manner, and the second inner sleeve 22 is connected with the second outer sleeve 21 through an embedded bearing 24. The vortex structure comprises a reducing inlet section 221 and an expanding outlet section 222 which are sequentially arranged along the flowing direction of concrete, and a plurality of rifling strips 23 which are annularly distributed and have the same rotating direction are arranged at the joint of the reducing inlet section 221 and the expanding outlet section 222. The rifling strips 23 are connected with the threaded holes on the second inner sleeve 22 through screws 25.
The concrete conveying section 3 is provided with a third outer sleeve 31 and a third inner sleeve 32.
The third inner sleeve 32 and the first inner sleeve 12 are of an integrated structure and are connected with the concrete conveying pipe 4.
The diameter of the first inner sleeve 12 is larger than the diameter of the second and third inner sleeves 22, 32.
First outer tube 11, second outer tube 21 and third outer tube 31 constitute integral type detachable shell structure 5, shell structure 5 comprises the concatenation of the half cylinder shell of two mutual symmetries, and one side concatenation department is articulated through hinge 52, and the opposite side concatenation department passes through bolt assembly 51 and connects.
When in use, concrete firstly enters the concrete conveying section 3 from the concrete conveying pipe 4; then under the effect of drainage plate 14, make the ectonexine of concrete replace the drainage, through first drainage hole 141 with the outer concrete replacement drainage to the central part of drainage plate 14 top and the accelerator full contact promptly, thereby through second drainage hole 142 with drainage plate 14 top not with accelerator contact or the less central concrete drainage of contact outside with the accelerator mix with the accelerator that continues to let in below drainage plate 14 to make inlayer and outer concrete homoenergetic and accelerator and air direct contact, improve mixing efficiency. The rifling strips 23 are provided with curved surfaces, the concrete fully mixed by the mixing section 1 sequentially passes through the reducing inlet section 221 and the expanding outlet section 222, finally forms a vortex under the action of the curved surfaces of the rifling strips 23 and drives the second inner sleeve 22 to rotate, and finally the concrete is rotationally sprayed out.
The contents of the present invention have been explained above. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Based on the above-mentioned contents of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention. The contents of the present invention have been explained above. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Based on the above-mentioned contents of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Claims (10)
1. A shower nozzle structure for spraying concrete, including concrete conveying section (3), mixing section (1) and the injection section (2) that connect gradually, its characterized in that: the mixing section (1) comprises a first inner sleeve (12), a first outer sleeve (11), a cavity (13) formed between the first inner sleeve (12) and the first outer sleeve (11), an accelerator conveying pipe (15) penetrating through the first outer sleeve (11) and communicated with the cavity (13), and a drainage plate (14) which is perpendicular to the concrete flow direction and is connected with the inner wall of the first inner sleeve (12); the pipe wall of the first inner sleeve (12) is provided with a through hole (121) for the accelerator to pass through; the injection section (2) comprises a second outer sleeve (21) and a second inner sleeve (22), the second inner sleeve (22) can rotate, and the inner wall of the second inner sleeve is provided with a vortex structure driving the second inner sleeve (22) to rotate.
2. The nozzle structure for spraying concrete according to claim 1, wherein: the vortex structure comprises a reducing inlet section (221) and an expanding outlet section (222) which are sequentially arranged along the flowing direction of concrete, and a plurality of rifling strips (23) which are annularly distributed and have the same rotating direction are arranged at the joint of the reducing inlet section (221) and the expanding outlet section (222); and/or the first inner sleeve (12) is connected with the second inner sleeve (22) in a nested manner, and the second inner sleeve (22) is connected with the second outer sleeve (21) through an embedded bearing (24).
3. The head structure for shotcrete according to claim 2, wherein: the rifling strip (23) is connected with a threaded hole on the second inner sleeve (22) through a screw rod (25).
4. The nozzle structure for spraying concrete according to claim 1, wherein: the pipe wall of the first inner sleeve (12) is provided with a plurality of circles of through holes (121) distributed along the concrete flow direction, and the upper part and the lower part of the drainage plate (14) are provided with the through holes (121).
5. The nozzle structure for spraying concrete according to claim 1, wherein: the drainage plate (14) is provided with a first drainage hole (141) extending from the outer side of the upper surface of the drainage plate (14) to the inner side of the lower surface and a second drainage hole (142) extending from the inner side of the upper surface of the drainage plate (14) to the outer side of the lower surface.
6. The nozzle structure for spraying concrete according to claim 5, wherein: the first drainage holes (141) and the second drainage holes (142) are circumferentially arranged and are arranged in a crossed manner.
7. The nozzle structure for spraying concrete according to claim 1, wherein: and a sealing ring (16) is arranged at the joint of the first inner sleeve (12) and the first outer sleeve (11).
8. The nozzle structure for spraying concrete according to claim 1, wherein: concrete conveying section (3) are equipped with third outer tube (31) and third interior sleeve pipe (32), sleeve pipe (32) and first interior sleeve pipe (12) formula structure as an organic whole and be connected with concrete conveying pipe (4) in the third, first outer tube (11), second outer tube (21) and third outer tube (31) constitute integral type detachable shell structure (5).
9. The nozzle structure for spraying concrete according to claim 8, wherein: the diameter of the first inner sleeve (12) is larger than the diameter of the second inner sleeve (22) and the third inner sleeve (32).
10. The nozzle structure for spraying concrete according to claim 8, wherein: the shell structure (5) is formed by splicing two mutually symmetrical semi-cylindrical shells, the splicing position of one side is hinged through a hinge (52), and the splicing position of the other side is connected through a bolt assembly (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921040849.6U CN210798991U (en) | 2019-07-04 | 2019-07-04 | Nozzle structure for spraying concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921040849.6U CN210798991U (en) | 2019-07-04 | 2019-07-04 | Nozzle structure for spraying concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210798991U true CN210798991U (en) | 2020-06-19 |
Family
ID=71243405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921040849.6U Active CN210798991U (en) | 2019-07-04 | 2019-07-04 | Nozzle structure for spraying concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210798991U (en) |
-
2019
- 2019-07-04 CN CN201921040849.6U patent/CN210798991U/en active Active
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