CN214514219U

CN214514219U - Air-material mixing device of concrete injection equipment and concrete injection equipment

Info

Publication number: CN214514219U
Application number: CN202120252288.7U
Authority: CN
Inventors: 许会俭; 高崇景; 郭志强; 贾小宁
Original assignee: Luoyang Zhubang Trading Co ltd
Current assignee: Luoyang Zhubang Trading Co ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-10-29
Anticipated expiration: 2031-01-28

Abstract

The utility model provides a concrete injection equipment's wind material mixing arrangement and concrete injection equipment relates to engineering equipment technical field, and this concrete injection equipment's wind material mixing arrangement includes: a mixing pipe and an air inlet pipe for concrete to pass through; wherein, the hybrid tube includes: the outer pipe and the inner pipe sleeved in the outer pipe; an annular cavity is formed between the outer pipe and the inner pipe; the inner pipe is provided with a plurality of gas injection holes communicated with the cavity; the outer pipe is provided with an air inlet communicated with the cavity; the inner diameter of the inner pipe is gradually reduced along the material conveying direction; the air inlet pipe is connected with the pipe wall of the outer pipe and communicated with the cavity through an air inlet. The utility model provides a wind material mixing arrangement can set up on concrete injection equipment's pipeline to add compressed air in to pipeline, applicable in the condition that the pipeline diameter of output connected diminishes.

Description

Air-material mixing device of concrete injection equipment and concrete injection equipment

Technical Field

The application relates to the technical field of engineering equipment, in particular to a wind material mixing device of concrete injection equipment and the concrete injection equipment.

Background

With the continuous development of infrastructure construction in China, the infrastructure construction is developed very rapidly in recent years, and because a large number of traffic facility buildings in China need to be excavated, the excavated tunnel wall is often subjected to guniting and wall protection in the construction process, and the guniting and wall protection construction is very important, so that the important guarantee of safe construction is ensured.

The air-material mixing device is used for adding compressed air into the concrete material so that the concrete material can be dispersed and sprayed out. In some prior art schemes, the spraying position and the spraying direction of the spray head are controlled by the mechanical arm, in the current technical scheme, compressed air and an accelerating agent are mixed and then injected into the spray head to be mixed with concrete materials, but the injection of the compressed air at the position of the spray head is inconvenient for manually swinging the spray head. Therefore, it is necessary to provide a pneumatic mixing device on the delivery line before the nozzle for injecting compressed air separately into the pipe to mix with the concrete material.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will solve lies in, to prior art's the aforesaid not enough, provides a concrete injection apparatus's air-fuel mixture device and concrete injection apparatus.

This concrete injection apparatus's air-fuel mixture device includes:

a mixing tube for passage of concrete material, comprising: the outer pipe and the inner pipe sleeved in the outer pipe; an annular cavity is formed between the outer pipe and the inner pipe; the inner pipe is provided with a plurality of gas injection holes communicated with the cavity; the outer pipe is provided with an air inlet communicated with the cavity; the inner diameter of the inner pipe is gradually reduced along the material conveying direction;

and the air inlet pipe is communicated with the cavity through an air inlet.

In some refinements, the inner wall of the inner tube is provided as a conical surface.

In some modifications, the air injection holes are inclined to one side of the material conveying direction.

In some improvements, an annular step surface is formed in the outer tube; the inner pipe is abutted against the annular step surface to realize positioning.

In some refinements, the first sealing ring and the second sealing ring are arranged on different sides of the cavity.

In some refinements, a first ring groove for receiving a first sealing ring and a second ring groove for receiving a second sealing ring are provided on the outer wall of the inner tube.

In some refinements, the gas injection holes are distributed uniformly in the circumferential direction along the inner wall of the inner tube.

In some refinements, the intake manifold is connected to an air compressor.

In some modifications, the pressure value of the compressed air output by the air compressor is 0.6-0.8 MPa.

On the other hand, the application also provides a concrete spraying device which is provided with the air material mixing device of the concrete spraying device.

The application provides wind material mixing arrangement includes: the mixing pipe is used for the concrete material to pass through, and the air inlet pipe is connected with the pipe wall of the outer pipe; the mixing tube includes: an outer tube and an inner tube; the compressed air injected from the air inlet pipe enters a cavity between the outer pipe and the inner pipe and is then sprayed into the pipeline of the inner pipe through the air injection holes on the inner pipe to be mixed with concrete materials. The air-material mixing device that this application provided can set up on concrete injection equipment's pipeline to add compressed air in to pipeline. In addition, the inner diameter of the inner pipe is gradually reduced along the material conveying direction, so that the air-material mixing device is applicable to the condition that the inner diameter of the conveying pipeline connected with the output end is smaller than that of the conveying pipeline connected with the input end.

Drawings

Fig. 1 is a schematic structural diagram of an air-material mixing device of a concrete spraying apparatus in an embodiment of the present application.

Fig. 2 is another schematic structural diagram of the air-material mixing device of the concrete spraying equipment in the embodiment of the application.

Detailed Description

The following are specific embodiments of the present application and are further described with reference to the drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

In addition, the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 1 and 2, the present application proposes a wind material mixing device of a concrete spraying apparatus, which includes: a mixing pipe 100 through which the concrete material passes, the mixing pipe 100 being connected to the mixing pipe 100; wherein, mixing pipe 100 includes: an outer tube 110 and an inner tube 120 sleeved inside the outer tube 110; an annular cavity 130 is formed between the outer tube 110 and the inner tube 120; the inner pipe 120 is provided with a plurality of gas injection holes 121 communicated with the cavity 130; the outer tube 110 is provided with an air inlet hole 111 communicated with the cavity 130; the inner diameter of the inner tube 120 is gradually reduced in the material conveying direction. The air inlet pipe 200 is connected with the pipe wall of the outer pipe 110, and the air inlet pipe 200 is communicated with the cavity 130 through an air inlet hole 111. The concrete is mixed with the compressed air injected from the intake pipe 200 while passing through the mixing pipe 100.

Specifically, the compressed air injected from the air inlet pipe 200 enters the cavity 130 between the outer pipe 110 and the inner pipe 120, and is then injected into the pipe of the inner pipe 120 through the air injection holes 121 of the inner pipe 120 to be mixed with the concrete material. The air-material mixing device that this application provided can set up on concrete injection equipment's pipeline to add compressed air in to pipeline. In addition, the inner diameter of the inner tube 120 gradually decreases along the material conveying direction, so that the air-material mixing device is applicable to the condition that the inner diameter of the conveying pipeline connected with the output end is smaller than that of the conveying pipeline connected with the input end.

One end of the intake pipe 200 is connected to the side wall of the outer pipe 110, and the intake pipe 200 communicates with the cavity 130 through the intake hole 111. Compressed air can be injected into the cavity 130 through the intake pipe 200. Referring to fig. 2, the other end of the intake pipe 200 is provided with external threads for connection with a pipe into which compressed air is injected. The intake pipe 200 corresponds to the intake holes 111 one by one. As shown in fig. 1, two air inlet pipes 200 are connected to the side wall of the outer pipe 110, and the two air inlet pipes 200 are respectively located at the left and right sides of the outer pipe 110.

In some embodiments, the intake conduit 200 is coupled to an air compressor. The compressed air in the intake duct 200 is generated by an air compressor connected thereto. Further, the pressure value of the compressed air output by the air compressor is 0.6-0.8 MPa. The air compressor is a device for compressing air, and is a conventional device in the prior art, and will not be described in detail herein.

Further, the inner diameter of the inner tube 120 becomes gradually smaller in the material conveying direction. In some conditions, it is desirable to connect a delivery line having a relatively small internal diameter at the output end. In some embodiments, the inner wall 122 of the inner tube 120 is provided as a conical surface.

Further, the air ejection holes 121 are inclined to the material conveying direction side. The air injection holes 121 inject compressed air in the concrete material conveying direction, so that the compressed air can provide power for the injection of the concrete.

The mixing pipe 100 has a feed end from which concrete enters and a discharge end from which concrete exits. In some embodiments, the mixing tube 100 is connected at both ends to a material conveying pipe by a clamp. The clamp is used for playing a role in tightening the quick connector, and has the advantages of good performance, high sealing degree and simple and easy installation.

Referring to fig. 1, the outer tube 110 and the inner tube 120 are further provided with a first sealing ring 300 and a second sealing ring 400; the first seal ring 300 and the second seal ring 400 are disposed on different sides of the cavity 130. The first and

second sealing rings

300 and 400 are used to seal the cavity 130 and prevent leakage of the compressed air in the cavity 130.

In some embodiments, an annular step surface 112 is formed within the outer tube 110; the inner tube 120 is positioned against the annular step surface 112. The inner tube 120 is fitted into the outer tube 110 from one end of the outer tube 110, and the annular stepped surface 112 serves to define the axial relative position between the inner tube 120 and the outer tube 110.

In some embodiments, the outer wall 123 of the inner tube 120 is provided with a first groove 124 for receiving the first seal ring 300 and a second groove 125 for receiving the second seal ring 400.

Further, the gas injection holes 121 are uniformly distributed along the circumference of the inner wall 122 of the inner tube 120. The arrangement can ensure that the compressed air is mixed with the concrete material more fully.

In the description of the present application, it is to be understood that the terms "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the present application as defined by the appended claims.

Claims

1. A wind material mixing device of concrete spraying equipment is characterized by comprising:

mixing pipe (100) for the passage of concrete material, comprising: the outer pipe (110) and the inner pipe (120) sleeved in the outer pipe (110); an annular cavity (130) is formed between the outer pipe (110) and the inner pipe (120); the inner pipe (120) is provided with a plurality of gas injection holes (121) communicated with the cavity (130); an air inlet hole (111) communicated with the cavity (130) is formed in the outer pipe (110); the inner diameter of the inner pipe (120) is gradually reduced along the material conveying direction;

and the air inlet pipe (200) is connected with the pipe wall of the outer pipe (110), and the air inlet pipe (200) is communicated with the cavity (130) through an air inlet hole (111).

2. The air-material mixing device of a concrete spraying apparatus according to claim 1, wherein the inner wall (122) of the inner pipe (120) is provided with a tapered surface.

3. The air-material mixing device of a concrete spraying apparatus according to claim 1, wherein said air-ejection holes (121) are inclined to one side of the material conveying direction.

4. The air-material mixing device of concrete spraying equipment according to claim 1, wherein an annular step surface (112) is formed in the outer pipe (110); the inner pipe (120) abuts against the annular step surface (112) to achieve positioning.

5. The air-material mixing device of concrete spraying equipment according to claim 1, characterized in that the outer pipe (110) and the inner pipe (120) are further provided with a first sealing ring (300) and a second sealing ring (400); the first seal ring (300) and the second seal ring (400) are disposed on different sides of the cavity (130).

6. The air-material mixing device of concrete spraying equipment according to claim 5, characterized in that the outer wall (123) of the inner pipe (120) is provided with a first ring groove (124) for mounting a first sealing ring (300) and a second ring groove (125) for mounting a second sealing ring (400).

7. The air-material mixing device of the concrete spraying equipment as recited in claim 1, characterized in that the air-ejecting holes (121) are evenly distributed along the circumference of the inner wall (122) of the inner pipe (120).

8. The air-material mixing device of concrete spraying equipment according to claim 1, wherein the air inlet pipe (200) is connected with an air compressor.

9. The air-material mixing device of the concrete spraying equipment as recited in claim 8, characterized in that the pressure value of the compressed air output by the air compressor is 0.6-0.8 MPa.

10. A concrete spraying apparatus, characterized in that it has the air-fuel mixing device of a concrete spraying apparatus as claimed in any one of claims 1 to 9.