Spray head device for spraying concrete

Abstract

The utility model provides a sprayer device for spraying concrete, which comprises a pipe body, an inner pipe is inserted into one end of the pipe body, a connector connected with a concrete conveying pipe is mounted at one end of the pipe body, and a pipe cover is mounted at the other end of the pipe body; a flow dividing groove is formed in one end of the pipe body, and after the inner pipe is inserted, a plurality of spraying holes are formed in the position, corresponding to the flow dividing groove, in the inner pipe. And an accelerator pipe communicated with the diversion groove is arranged on the outer side of the pipe body. The assembly type structure is adopted, after the inner pipe is inserted into the pipe body, the connector is connected with the nut through the connecting rod, so that the inner pipe is fixed, when the spray head needs to be cleaned, only the nut needs to be screwed off, and the connector and the inner pipe need to be sequentially taken down, operation is simple, the interior of the spray head can be fully cleaned, and the cleaning efficiency is improved. Therefore, it is guaranteed that the nozzle is not prone to being blocked in follow-up work, and the service life of the nozzle device can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of shotcrete, and particularly relates to a nozzle device for shotcrete. Background Art

[0002] Shotcrete is a construction method of spraying and pouring fine aggregate concrete with a pressure spray gun. It is often used for pouring thin-walled structures such as tunnel linings, walls, and ceilings, or linings of other structures and protective layers of steel structures. Shotcrete is formed by pre-mixing cement, sand, gravel, water, and a certain amount of admixtures, loading them into a shotcreting machine, and using high-pressure air to send them to the nozzle, where they are mixed with a quick-setting agent and then sprayed onto the surface of rocks or concrete at a very high speed.

[0003] After each use of the concrete nozzle, some concrete will remain stuck to the inner side of the nozzle. After long-term use, more concrete accumulates, and the pipeline is also prone to blockage, which will reduce the service life of the pipeline. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a nozzle device for shotcrete, and the technical scheme adopted is as follows:

[0005] A nozzle device for shotcrete includes a pipe body. One end of the pipe body is inserted with an inner pipe. A connector connected to a concrete delivery pipe is installed at one end of the pipe body. A pipe cover is installed at the other end of the pipe body. A diversion groove is opened at one end of the pipe body. After the inner pipe is inserted, a number of spray holes are opened at the position of the inner pipe corresponding to the diversion groove. A quick-setting agent pipe communicating with the diversion groove is arranged outside the pipe body.

[0006] Further, after the inner pipe is inserted into the pipe body, a gap is formed between the outer wall of the inner pipe and the diversion groove arranged in the pipe body. A sealing ring capable of inserting into this gap is arranged on the side of the connector facing the pipe body, so that the diversion groove is in a sealed state to prevent the input quick-setting agent from leaking out.

[0007] Further, a number of connecting rods are arranged at one end of the pipe body. Openings for the connecting rods to pass through are opened in the outer edge of the connector. After the connecting rods pass through the outer edge of the connector, the connector can be fixedly installed by connecting the connecting rods with nuts.

[0008] Further, one end of the connector located inside the inner pipe extends inward by 3 - 5 cm, which can form a suction force on the spray holes between the connector and the inner pipe, increasing the spraying efficiency of the quick-setting agent.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model adopts an assembled structure. After inserting an inner tube into the tube body, the inner tube is fixed by connecting a connector to a nut through a connecting rod. When the nozzle needs to be cleaned, only the nut needs to be unscrewed, and then the connector and the inner tube are removed in sequence. The operation is simple, and the inside of the nozzle can be fully cleaned, thereby ensuring that the nozzle is not easily blocked during subsequent work and improving the service life of the nozzle device. Brief Description of the Drawings

[0011] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 is an exploded view of the decomposition structure of the utility model;

[0013] Figure 3 is a schematic diagram of the internal structure of the utility model;

[0014] Figure 4 is the utility model Figure 3 is an enlarged schematic view of the structure at A in the utility model.

[0015] In the figure:

[0016] 1 - tube body, 11 - diversion groove, 12 - connecting rod, 2 - inner tube, 21 - injection hole, 3 - connector, 4 - accelerator tube, 5 - tube cover. Detailed Description of the Preferred Embodiment

[0017] In order to enable those skilled in the art of this technology to better understand the solution of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0018] As shown in the attached Figures 1-4 figure.

[0019] A nozzle device for shotcrete includes a tube body 1. One end of the tube body 1 is inserted with an inner tube 2. A connector 3 connected to the concrete conveying pipe is installed at one end of the tube body 1. The other end of the concrete conveying pipe is connected to a concrete spraying machine. The specific installation method of the connector 3 is: a plurality of connecting rods 12 are provided at one end of the tube body 1, and an opening for the connecting rod 12 to pass through is opened in the outer edge of the connector 3. When the connecting rod 12 passes through the outer edge of the connector 3, a nut is screwed onto one end of the connecting rod 12 to fix the connector 3.

[0020] During use, first, the inner tube 2 and the connector 3 are assembled at one end of the tube body 1 in sequence. After assembly, as shown in the attachedFigure 3 As shown, the outer wall of the inner tube 2 fits against the inner wall of the tube body 1, and the cross-section of the inner tube 2 is triangular. The inner wall of the inner tube 2 gradually contracts towards the outer wall. This installation method can avoid the formation of obvious stepped dead corners in the tube body 1 and prevent the residue of concrete.

[0021] At the other end of the tube body 1, a tube cover 5 is installed by threaded connection. The tube cover 5 can reduce the occurrence of large-scale diffusion and sputtering of concrete after it exits the device. The tube cover 5 is a detachable structure and can be replaced after being damaged by concrete sputtering for a long time.

[0022] Furthermore, a diversion groove 11 is provided at one end of the tube body 1, and a quick-setting agent pipe 4 communicating with the diversion groove 11 is provided on one side of the tube body 1. After the inner tube 2 is inserted, a number of spray holes 21 are provided at the position of the inner tube 2 corresponding to the diversion groove 11, and a gap is formed between the outer wall of the inner tube 2 and the diversion groove 11 provided in the tube body 1. After the connector 3 is installed, the final opening of this gap is closed, forming a closed cavity. Therefore, when the quick-setting agent is transported into the diversion groove 11 through the quick-setting agent pipe 4, the transported quick-setting agent can only be ejected through the spray holes 21 provided in the inner tube 2 and mixed with the concrete transported at the position of the connector 3.

[0023] To form a closed cavity for the diversion groove 11, a sealing ring that can be inserted into the gap between the tube body 1 and the inner tube 2 is provided on the side of the connector 3 facing the tube body 1.

[0024] When the nozzle needs to be cleaned, only need to unscrew the nut, and then remove the connector 3 and the inner tube 2 in sequence to fully clean the inside of the nozzle. The steps are simple and easy to operate.

[0025] Any technical solution that uses the technical solution of the present invention or is designed by those skilled in the art under the inspiration of the technical solution of the present invention and achieves the above technical effects shall fall within the protection scope of the present invention.

Claims

1. A spray head device for shotcrete, comprising a pipe body (1), characterized in that: An inner tube (2) is inserted at one end of the tube body (1), a connector (3) connected to a concrete delivery pipe is installed at one end of the tube body (1), and a tube cover (5) is installed at the other end of the tube body (1); a diversion groove (11) is opened at one end of the tube body (1), and after the inner tube (2) is inserted, a plurality of injection holes (21) are opened in the inner tube (2) at positions corresponding to the diversion groove (11); and an accelerator tube (4) connected to the diversion groove (11) is provided on the outside of the tube body (1).

2. A spray head device for shotcrete as claimed in claim 1, characterized in that: After the inner tube (2) is inserted into the tube body (1), a gap is formed between the outer wall of the inner tube (2) and the diversion groove (11) provided in the tube body (1).

3. A spray head device for shotcrete as claimed in claim 2, characterized in that: A sealing ring capable of being inserted into the gap between the tube body (1) and the inner tube (2) is provided on the side of the connector (3) facing the tube body (1).

4. A spray head device for shotcrete as claimed in claim 1, characterized in that: A plurality of connecting rods (12) are provided at one end of the tube body (1), and openings for the connecting rods (12) to pass through are provided in the outer edge of the connecting head (3).

5. A spray head device for shotcrete as claimed in claim 1, characterized in that: One end of the connector (3) located inside the inner tube (2) extends inward by 3-5 cm.

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