CN211026841U - Nozzle structure and concrete sprayer - Google Patents
Nozzle structure and concrete sprayer Download PDFInfo
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- CN211026841U CN211026841U CN201921163508.8U CN201921163508U CN211026841U CN 211026841 U CN211026841 U CN 211026841U CN 201921163508 U CN201921163508 U CN 201921163508U CN 211026841 U CN211026841 U CN 211026841U
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Abstract
The utility model belongs to the technical field of concrete spraying, in particular to a nozzle structure, which comprises a spray pipe and a mixer, wherein a first medium flows in the spray pipe, and a mixer mounting hole seat vertical to the extension direction of the spray pipe is arranged on the pipe wall of the spray pipe; the first end of blender is equipped with attach fitting, and the blender penetrates in the spray tube through blender mounting hole seat to can dismantle with blender mounting hole seat and be connected, the circulation has the second medium in the blender, and the blowout side equipartition on the blender at the spray tube has a plurality of through-holes, and the through-hole is used for spraying the second medium in to first medium. The utility model provides a concrete sprayer, includes preceding nozzle structure, and first medium is the concrete, and the second medium is the accelerator, and the attach fitting is connected with accelerator pipeline, and concrete pipeline is connected to the entrance point of spray tube. The utility model discloses enable intraductal concrete and accelerator abundant contact, misce bene, reduce the rebound volume that the concrete sprays, and maintain the convenience.
Description
Technical Field
The utility model belongs to the technical field of the concrete sprays, concretely relates to nozzle structure and concrete sprayer.
Background
At present, the concrete spraying technology is to spray concrete onto a sprayed surface by a concrete sprayer through compressed gas or other means to make the concrete set and harden quickly. The uniformity of mixing the concrete and the accelerator has a great influence on reducing the rebound quantity of the concrete and improving the construction quality. The existing nozzle is characterized in that an accelerator and air are injected into the outer wall of the existing nozzle to be in contact with the concrete inside the existing nozzle, only part of the concrete close to the inner wall of the existing nozzle is in contact with the accelerator, and the concrete located at the center is not fully mixed with the accelerator, so that the concrete cannot be rapidly solidified after being sprayed out, the resilience of the sprayed concrete is increased during construction, the generated dust concentration is increased, and the construction environment is seriously affected.
In addition, the mixer is fixedly arranged in the spray pipe, is easy to wear, is not easy to disassemble after being worn, needs to replace the spray pipe integrally, and is high in cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problem and not enough of the aforesaid existence, provide a nozzle structure, it enables intraductal concrete and accelerator abundant contact, misce bene, reduces the rebound volume that the concrete sprays, and maintains the convenience.
In order to achieve the purpose, the adopted technical scheme is as follows:
a nozzle structure comprises a spray pipe and a mixer, wherein a first medium flows through the spray pipe, and a mixer mounting hole seat vertical to the extension direction of the spray pipe is arranged on the pipe wall of the spray pipe; the first end of the mixer is provided with a connecting joint, the mixer penetrates into the spray pipe through the mixer mounting hole seat and is detachably connected with the mixer mounting hole seat, a second medium flows through the mixer, a plurality of through holes are uniformly distributed on the spraying side of the spray pipe on the mixer, and the through holes are used for spraying the second medium into the first medium.
According to one of the nozzle arrangements, the second end of the mixer is closed.
According to the nozzle structure, the pipe wall of the spray pipe is further provided with an end cover mounting hole seat which corresponds to the mixer mounting hole seat, and an end cover is detachably connected to the end cover mounting hole seat.
According to the nozzle structure, the part of the mixer, which is positioned in the spray pipe, is arranged to be in an elliptic cylinder shape, the mixer mounting hole seat and the end cover mounting hole seat are both provided with elliptic holes matched with the mixer, and the long axis direction of the elliptic holes is consistent with the conveying direction of the first medium.
According to the nozzle structure, the spray pipe is divided into a rear section, a middle section and a front section, the inner cavity of the spray pipe is integrally shuttle-shaped, the cavity of the middle section of the spray pipe is larger than the cavity of the rear section and the cavity of the front section of the spray pipe, and the mixer mounting hole seat is arranged on the wall of the middle section of the spray pipe.
According to the nozzle structure, a plurality of stirring rods are arranged inside the front section of the spray pipe.
According to the nozzle structure, the stirring rods are spirally arranged inside the front section of the spray pipe in sequence.
According to the nozzle structure, the stirring rod occupies no more than 30% of the cross-sectional area of the front section of the spray pipe.
According to the nozzle structure, the groove which is convenient to be connected with the quick pipe clamp is formed in the outer side of the rear section of the spray pipe.
The utility model provides a concrete sprayer, includes the nozzle structure of the preceding, first medium is the concrete, the second medium is the accelerator, attach fitting is connected with accelerator pipeline, the concrete pipeline is connected to the entrance point of spray tube.
The beneficial effect that above-mentioned technical scheme obtained is:
1. through the improvement of the spray nozzle, the concrete in the spray pipe can be fully mixed with the accelerating agent before being sprayed, so that the rebound quantity of the sprayed concrete is reduced, the dust pollution caused by the concrete spraying is prevented, and the construction quality is improved;
2. the flow direction of the accelerator is the same as that of the concrete, the accelerator does not flow back, and simultaneously, the concrete is prevented from blocking the outlet hole of the accelerator, so that the mixing efficiency can be improved;
3. a stirring rod is arranged in the spray pipe, and the stirring rod disturbs the concrete and the accelerating agent to be mixed more uniformly;
4. the mixer can be disassembled and replaced, and is positioned in the middle of the spray pipe, so that abrasion and consumption are caused by flowing and impacting of concrete aggregate, the detachable mixer is convenient to maintain, the spray pipe does not need to be integrally replaced, and the maintenance cost is low;
5. the inside of the spray pipe is in a fusiform shape, the middle of the spray pipe is large, the two ends of the spray pipe are small, and the pipe blockage phenomenon cannot occur when the accelerator is filled in the middle section of the spray pipe.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
Fig. 1 shows a schematic sectional structural view of a nozzle structure according to an embodiment of the present invention.
Fig. 2 shows a schematic top view of a nozzle structure according to an embodiment of the present invention.
Fig. 3 shows a schematic sectional front view of a nozzle according to an embodiment of the present invention.
Fig. 4 shows a schematic top cross-sectional structural view of a nozzle according to an embodiment of the present invention.
FIG. 5 shows the schematic sectional A-A, B-B and C-C structures of FIG. 3.
Fig. 6 shows a schematic sectional structural view of a mixer according to an embodiment of the present invention.
FIG. 7 shows a schematic cross-sectional view of D-D of FIG. 6.
Number in the figure:
100 is a nozzle, 101 is a mixer mounting socket, 102 is a groove, 103 is an end cap mounting socket, 104 is a stirring rod, 200 is a mixer, 201 is a connector, 202 is a through hole, 203 is a flange plate, 300 is a quick pipe clamp, and 400 is an end cap.
Detailed Description
In order to make the purpose, technical features and technical effects of the technical solution of the present invention clearer, the drawings of the embodiments of the present invention are combined together, and the example solution of the embodiments of the present invention is clearly and completely described. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 7, the embodiment discloses a nozzle structure, which includes a nozzle 100 and a mixer 200, wherein a first medium flows through the nozzle 100, a mixer mounting hole seat 101 perpendicular to the extending direction of the nozzle is disposed on the wall of the nozzle, and the inlet end of the nozzle 100 is connected to a first medium delivery pipeline through a quick pipe clamp 300; the first end of blender 200 is equipped with attach fitting 201, the closed setting of second end of blender 200, blender 200 penetrates in spray tube 100 through blender mounting hole seat 101 to with blender mounting hole seat 101 detachable connection, the circulation has the second medium in the blender 200, attach fitting 201 is connected with second medium pipeline, on the blender 200 on the blowout side equipartition of spray tube 100 have a plurality of through-holes 202, through-hole 202 is used for spouting the second medium in to first medium.
In this embodiment, specifically, the first medium is concrete, the second medium is a quick-setting admixture, the connection joint 201 is connected to a quick-setting admixture delivery pipe, and the inlet end of the spray pipe 100 is connected to the concrete delivery pipe, as shown in fig. 1, the included angle between the flow direction of the quick-setting admixture in the through hole 202 of the mixer and the flow direction of the concrete is less than or equal to 90 degrees, when the quick-setting admixture is sprayed into the concrete, the quick-setting admixture can be sprayed to both sides of the mixer 200, and also can be sprayed to the front end and the front side end of the mixer 200, that is, the admixture can be sprayed to each cross-section position of the concrete flow beam, so that the mixing effect of the concrete and the quick-setting admixture is better, and in addition, the flow direction of the sprayed quick-setting admixture is consistent, the quick-setting admixture does not flow back, and meanwhile, the.
The spray pipe 100 is divided into a rear section, a middle section and a front section, which are sequentially connected by a welding mode, the inner cavity of the spray pipe 100 is integrally shuttle-shaped, the cavity of the middle section of the spray pipe 100 is larger than the cavities of the rear section and the front section of the spray pipe 100, the inner cavity of the rear section of the spray pipe 100, which is close to the concrete conveying pipe, is smaller, the inner cavity of the middle section of the spray pipe 100 is horn-shaped, which changes from small to large, and is in transitional connection with the cavity of the middle section of the spray pipe 100, the front section of the spray pipe 100 is a fully mixed section of concrete and accelerating agent, the area of the inner cavity, which is close to the side of the middle section of the spray pipe 100, is large and is inverted horn-shaped, and shrinks towards the outlet; the middle section of the spray pipe 100 is a section for filling the setting accelerator, because the inner cavity of the middle section of the spray pipe 100 is large, the pipe blocking phenomenon cannot occur when the setting accelerator is filled in the middle section of the spray pipe 100, specifically, the mixer mounting hole seat 101 is arranged on the upper part of the pipe wall of the middle section of the spray pipe 100, the flange plate 203 is arranged outside the first end part of the mixer 200, the flange plate 203 passes through the connecting bolt, the gasket is connected with the mixer mounting hole seat 101, the lower part of the pipe wall of the middle section of the spray pipe 100 is also provided with the end cover mounting hole seat 103 which corresponds to the mixer mounting hole seat 101, the end cover 400 is detachably connected to the end cover mounting hole seat 103, the end cover 400.
As shown in fig. 3, in this embodiment, preferably, the mixer mounting hole seat 101 and the end cap mounting hole seat 103 are rectangular and are fixed to the middle section of the nozzle 100 by welding, and since the mixer mounting hole seat 101 and the end cap mounting hole seat 103 need to be machined with machined surfaces matched with the flange plate 203 and the end cap 400, the machining and manufacturing are facilitated by adopting a single machining and welding manner; as shown in fig. 6 and 7, the connection joint 201 is connected to the mixer 200 by welding, so as to facilitate the processing.
As shown in fig. 4 and 7, in this embodiment, preferably, the mixer 200 is disposed in the nozzle 100 and is configured as an elliptical cylinder, elliptical holes matched with the mixer 200 are disposed on the mixer mounting hole seat 101 and the end cover mounting hole seat 103, the long axis direction of the elliptical holes is the same as the conveying direction of the concrete, the mixer 200 divides the concrete and fills the concrete with the accelerator, and the elliptical cylinder is configured to ensure the flow rate of the accelerator in the mixer 200 while reducing the flow resistance of the concrete in the middle section of the nozzle 100 as much as possible.
In this embodiment, it is preferable that a plurality of stirring rods 104 are provided inside the front section of the nozzle 100 to mix the concrete and the setting accelerator, and when the concrete flows through, the concrete is divided and stirred to sufficiently mix the concrete and the setting accelerator.
On the basis of above-mentioned scheme, more preferred, stirring rod 104 is the heliciform and arranges in proper order in spray tube 100 anterior segment inside, can carry out the disturbance to a plurality of azimuths on the concrete flow cross-section, mixes the effect better to make the stirring rod account for spray tube 100 anterior segment cross sectional area during the setting and no longer than 30%, make stirring 104 not block the normal flow of concrete.
The working mode of a nozzle structure in this embodiment is as follows: concrete flows in from the rear section of the spray pipe 100, the accelerator is added into the middle section of the spray pipe 100, and when the concrete flows through the front section of the spray pipe 100, the concrete and the accelerator are fully mixed and then sprayed out to be solidified on a sprayed surface.
The embodiment also discloses a concrete sprayer which comprises the nozzle structure.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "a," "an," "two," and similar referents in the specification and claims of the present application does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the above specific embodiments without departing from the scope of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention, which is defined by the appended claims.
Claims (10)
1. A nozzle arrangement, comprising:
the spray pipe is internally circulated with a first medium, and the pipe wall of the spray pipe is provided with a mixer mounting hole seat vertical to the extension direction of the spray pipe; and
the first end of the mixer is provided with a connecting joint, the mixer penetrates into the spray pipe through the mixer mounting hole seat and is detachably connected with the mixer mounting hole seat, a second medium flows through the mixer, a plurality of through holes are uniformly distributed on the spraying side of the spray pipe on the mixer, and the through holes are used for spraying the second medium into the first medium.
2. A nozzle arrangement according to claim 1, wherein the second end of the mixer is closed.
3. A nozzle arrangement according to claim 2, wherein the wall of the nozzle tube is further provided with an end cap mounting hole seat corresponding to the mixer mounting hole seat, and an end cap is detachably connected to the end cap mounting hole seat.
4. A nozzle arrangement according to claim 3, wherein the mixer is arranged in an elliptical cylinder in the interior of the nozzle, and elliptical holes matching the mixer are provided in the mixer mounting socket and the end cap mounting socket, and the major axis of the elliptical holes is aligned with the direction of delivery of the first medium.
5. A nozzle arrangement according to any one of claims 1 to 4, wherein said nozzle tube is divided into a rear section, a middle section and a front section, the internal cavity of said nozzle tube is generally shuttle-shaped, the cavity of said middle section of said nozzle tube is larger than the cavity of said rear section and said front section of said nozzle tube, and said mixer mounting socket is provided on the wall of said middle section of said nozzle tube.
6. A nozzle arrangement according to claim 5, wherein the lance forward section is provided with a plurality of mixing bars therein.
7. A nozzle arrangement according to claim 6, wherein the mixing bars are arranged in a helical formation within the forward section of the lance.
8. A nozzle arrangement according to claim 6, wherein the mixing rod occupies no more than 30% of the cross-sectional area of the forward section of the lance.
9. A nozzle arrangement according to claim 5, wherein the rear section of the nozzle tube is provided with a recess on the outside to facilitate connection to a quick pipe clamp.
10. A concrete spraying machine, comprising a nozzle arrangement according to any one of claims 1 to 9, wherein the first medium is concrete and the second medium is an accelerator, the connection fitting is connected to an accelerator delivery pipe, and the inlet end of the nozzle tube is connected to the concrete delivery pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921163508.8U CN211026841U (en) | 2019-07-23 | 2019-07-23 | Nozzle structure and concrete sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921163508.8U CN211026841U (en) | 2019-07-23 | 2019-07-23 | Nozzle structure and concrete sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211026841U true CN211026841U (en) | 2020-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921163508.8U Active CN211026841U (en) | 2019-07-23 | 2019-07-23 | Nozzle structure and concrete sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211026841U (en) |
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2019
- 2019-07-23 CN CN201921163508.8U patent/CN211026841U/en active Active
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