Tunnel concrete injection quantity adjusting nozzle

Abstract

The utility model discloses a tunnel concrete injection quantity adjusting nozzle, and belongs to the technical field of tunnel construction. Comprising a connecting pipe and a nozzle movably connected with the connecting pipe, and the nozzle moves in the length direction of the connecting pipe; a partition plate is arranged on the inner wall of the connecting pipe in the circumferential direction to divide the connecting pipe into two independent cavities, a conical adjusting assembly penetrates through the partition plate and is fixedly connected with the spray head, and when the connecting pipe and the spray head move relatively, the size of a gap between the outer wall of the conical adjusting assembly and the partition plate is changed. The partition plate is arranged in the connecting pipe for conveying concrete and penetrates through the conical adjusting assembly, the conical adjusting assembly is fixedly connected with the spray head, an operator manually shifts the spray head to move, the size of a gap between the outer wall of the conical adjusting assembly and the partition plate is changed, the circulation area of the concrete is changed, and the problems that the concrete is uneven in distribution during spraying, and the spraying effect is poor are solved. In addition, the adjusting nozzle is simple in structure and convenient to operate, and saves cost and manpower.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, specifically a tunnel concrete spraying volume adjustment nozzle. Background Technology

[0002] Concrete spraying is a crucial step in tunnel construction. Traditional nozzles often employ a fixed design, making it impossible to precisely adjust the spray volume according to actual needs, resulting in low construction efficiency and frequent concrete waste. Furthermore, traditional nozzles are prone to uneven concrete distribution during spraying, affecting the spraying effect and construction quality. To address these issues, some nozzles with adjustable spray volumes have emerged on the market; however, these nozzles are often complex in structure and inconvenient to operate.

[0003] How to invent a tunnel concrete spraying volume adjustment nozzle to solve these problems has become an urgent problem for those skilled in the art. Utility Model Content

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A tunnel concrete spraying volume adjustment nozzle includes a connecting pipe and a nozzle movably connected to the connecting pipe, wherein the nozzle moves along the length of the connecting pipe.

[0006] A partition is provided circumferentially on the inner wall of the connecting pipe to divide the connecting pipe into two independent chambers. A conical adjustment component is provided through the partition. The conical adjustment component is fixedly connected to the nozzle. When the connecting pipe and the nozzle move relative to each other, the gap between the outer wall of the conical adjustment component and the partition changes.

[0007] Preferably, the partition is provided with a through adjustment hole, and the tapered adjustment component is disposed in the adjustment hole.

[0008] Preferably, the conical adjustment assembly includes a conical portion disposed within the adjustment hole, a connecting post fixedly connected to one end of the conical portion facing the nozzle, a connecting rod fixedly connected to the connecting post, and the end of the connecting rod away from the connecting post fixedly connected to the inner wall of the nozzle.

[0009] Preferably, the connecting rods are configured as an array.

[0010] Preferably, the outer wall of the end of the connecting column away from the tapered portion is provided with a second connecting thread; the end of the connecting rod away from the nozzle is fixedly connected with a threaded sleeve, and the connecting column is threadedly connected to the threaded sleeve through the second connecting thread.

[0011] Preferably, the connecting pipe has an adjusting thread on the inner wall of the independent chamber near the nozzle; the outer wall of the nozzle has a threaded groove, and the connecting pipe is connected to the nozzle through the adjusting thread and the threaded groove.

[0012] Preferably, the outer wall of the nozzle is provided with scale markings.

[0013] Preferably, the inner wall of the nozzle near the end of the connecting pipe is provided with a flow guiding slope.

[0014] Preferably, the inner wall of the independent chamber of the connecting pipe away from the nozzle is provided with a first connecting thread for connecting to the concrete delivery pipe.

[0015] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0016] This utility model relates to a tunnel concrete spraying volume adjustment nozzle, belonging to the field of tunnel construction technology. This application involves installing a baffle plate inside the concrete conveying pipe, and a conical adjustment component extending through the baffle plate. The conical adjustment component is fixedly connected to the nozzle. Operators manually move the nozzle to change the gap between the outer wall of the conical adjustment component and the inner wall of the baffle plate, thereby altering the flow area of ​​the concrete within the adjustment hole. This solves the problem of uneven concrete distribution, which easily affects spraying effect and construction quality in traditional spraying processes. Furthermore, this adjustment nozzle has a simple structure, is easy to operate, saves costs and manpower, and increases its widespread use. The outer wall of the nozzle is marked with graduations, allowing operators to precisely adjust the concrete spraying volume and achieve accurate control of the spraying quantity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a tunnel concrete spraying volume adjusting nozzle according to the present invention.

[0018] Figure 2 This is a cross-sectional view of a tunnel concrete spraying volume adjustment nozzle according to the present invention;

[0019] Figure 3 This is a cross-sectional view of the connecting pipe of this utility model;

[0020] Figure 4 This is a cross-sectional view of the nozzle of this utility model;

[0021] Figure 5 This is a schematic diagram of the separate structure of the conical adjustment component of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Connecting pipe; 101. Partition plate; 102. Adjusting hole; 103. Adjusting thread; 104. First connecting thread;

[0024] 2. Nozzle; 201. Threaded groove; 202. Guide slope; 203. Scale markings;

[0025] 3. Conical adjustment assembly; 301. Connecting post; 302. Second connecting thread; 303. Screw sleeve; 304. Connecting rod; 305. Conical part. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] See attached document Figure 1-5 This embodiment of a tunnel concrete spraying volume adjustment nozzle includes a connecting pipe 1 and a nozzle 2 movably connected to the connecting pipe 1. The nozzle 2 can move along the length direction of the connecting pipe 1. The connecting pipe 1 is used to connect to a concrete conveying pipeline and convey concrete to the nozzle 2 for spraying, thereby spraying and reinforcing the tunnel and improving the tunnel's support strength.

[0028] The inner wall of the connecting pipe 1 is provided with a partition 101 along the circumference to divide the connecting pipe 1 into two independent chambers. A conical adjustment component 3 is provided through the partition 101. The conical adjustment component 3 is fixedly connected to the nozzle 2. When the connecting pipe 1 and the nozzle 2 move relative to each other, the gap between the outer wall of the conical adjustment component 3 and the partition 101 changes, thereby changing the flow area of ​​the concrete.

[0029] When the connecting pipe 1 delivers concrete to the nozzle 2 for spraying, the concrete will come into contact with the conical adjustment component 3 as it flows through the partition 101. The position of the conical adjustment component 3 on the partition 101 determines the flow area of ​​the concrete, thereby affecting the amount of concrete sprayed.

[0030] When operators need to adjust the concrete spraying volume according to the actual site conditions, they manually move the nozzle 2 back and forth along the length of the connecting pipe 1, thereby adjusting the position of the conical adjustment component 3 on the partition 101. This changes the gap between the outer wall of the conical adjustment component 3 and the partition 101, thus altering the concrete flow area and the concrete spraying volume. By inserting the conical adjustment component 3 through the partition 101 and fixing it to the nozzle 2, operators can easily change the relative position of the nozzle 2 and the connecting pipe 1 from the outside, thereby changing the concrete spraying volume within the nozzle 2. This solves the problem of uneven concrete distribution during traditional spraying processes, which affects the spraying effect and construction quality. This adjustable nozzle has a simple structure, is easy to operate, saves costs and manpower, and increases its adoption rate.

[0031] Specifically, the partition 101 is provided with a through adjustment hole 102, and the conical adjustment component 3 is disposed within the adjustment hole 102. When the connecting pipe 1 moves relative to the nozzle 2, the gap between the outer wall of the conical adjustment component 3 and the inner wall of the adjustment hole 102 changes, thereby changing the flow area of ​​the concrete.

[0032] In another embodiment, such as Figure 2 , Figure 4 and Figure 5 As shown, the conical adjustment assembly 3 includes a conical part 305, which is disposed in the adjustment hole 102. A connecting post 301 is fixedly connected to one end of the conical part 305 toward the nozzle 2. A connecting rod 304 is fixedly connected to the connecting post 301. The end of the connecting rod 304 away from the connecting post 301 is fixedly connected to the inner wall of the nozzle 2.

[0033] The operator adjusts the position of the nozzle 2, causing the conical part 305 to move within the adjustment hole 102. By changing the gap between the outer wall of the conical part 305 and the inner wall of the adjustment hole 102, the flow area of ​​concrete within the adjustment hole 102 is altered, thereby achieving precise control of the spraying volume.

[0034] When the operator needs to adjust the amount of concrete sprayed according to the actual situation on site, he moves the nozzle 2 back and forth along the length of the connecting pipe 1 by hand. The movement of the nozzle 2 causes the connecting rod 304 to move, which in turn causes the connecting column 301 to move, thereby changing the position of the cone 305 in the adjusting hole 102, changing the flow area of ​​concrete in the adjusting hole 102, and thus changing the amount of concrete sprayed.

[0035] The connecting rods 304 are arranged in an array to strengthen the connection between the tapered adjustment assembly 3 and the nozzle 2.

[0036] like Figure 5 As shown, the outer wall of the end of the connecting post 301 away from the tapered portion 305 is provided with a second connecting thread 302; the end of the connecting rod 304 away from the inner wall of the nozzle 2 is fixedly connected to a threaded sleeve 303, and the connecting post 301 is threadedly connected to the threaded sleeve 303 through the second connecting thread 302. When the tapered portion 305 needs to be replaced or cleaned, the operator rotates the connecting post 301 to remove the connecting post 301 from the threaded sleeve 303, thereby separating the connecting post 301 from the threaded sleeve 303 and disassembling the tapered portion 305 from the nozzle 2 for easy cleaning or replacement, saving the cost of overall replacement or cleaning time.

[0037] In another embodiment, such as Figure 3 and Figure 4 As shown, the connecting pipe 1 has an adjusting thread 103 on the inner wall of the independent chamber near the nozzle 2; the outer wall of the nozzle 2 has a flange, and the outer wall of the flange has a threaded groove 201. The connecting pipe 1 and the nozzle 2 are connected through the adjusting thread 103 and the threaded groove 201.

[0038] When it is necessary to separate the connecting pipe 1 from the nozzle 2, the operator manually rotates the connecting pipe 1 to allow the adjusting thread 103 to exit the thread groove 201, thereby separating the connecting pipe 1 from the nozzle 2. This facilitates subsequent cleaning or replacement of damaged parts, saving costs and the operator's time and effort.

[0039] like Figure 4 As shown, the outer wall of the nozzle 2 is provided with a scale mark 203, which allows the operator to accurately adjust the amount of concrete sprayed by adjusting the amount of concrete sprayed, thereby achieving precise control of the spraying amount.

[0040] In another embodiment, such as Figure 4 As shown, a guide slope 202 is provided on the inner wall of the end of the nozzle 2 near the connecting pipe 1. The guide slope 202 can reduce the impact force on the bottom surface of the nozzle 2 during concrete transportation, thereby improving the stability of the overall connection between the connecting pipe 1 and the nozzle 2.

[0041] In another embodiment, such as Figure 3 As shown, the inner wall of the independent chamber of the connecting pipe 1 away from the nozzle 2 is provided with a first connecting thread 104 for connecting the concrete conveying pipe. Through the first connecting thread 104, the concrete conveying pipe can be tightly connected to the connecting pipe 1, ensuring that the concrete can smoothly enter the nozzle and enhancing the connection stability between the connecting pipe 1 and the concrete conveying pipe.

[0042] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A nozzle for adjusting the amount of concrete sprayed in a tunnel, characterized in that: It includes a connecting pipe (1) and a nozzle (2) movably connected to the connecting pipe (1), wherein the nozzle (2) moves along the length of the connecting pipe (1); The inner wall of the connecting pipe (1) is provided with a partition (101) along the circumference to divide the connecting pipe (1) into two independent chambers. The partition (101) is provided with a conical adjustment component (3). The conical adjustment component (3) is fixedly connected to the nozzle (2). When the connecting pipe (1) and the nozzle (2) move relative to each other, the gap between the outer wall of the conical adjustment component (3) and the partition (101) changes.

2. The tunnel concrete spraying volume adjusting nozzle according to claim 1, characterized in that: The partition (101) is provided with a through adjustment hole (102), and the tapered adjustment component (3) is disposed in the adjustment hole (102).

3. The tunnel concrete spraying volume adjusting nozzle according to claim 2, characterized in that: The conical adjustment assembly (3) includes a conical part (305) disposed in the adjustment hole (102). A connecting post (301) is fixedly connected to one end of the conical part (305) toward the nozzle (2). A connecting rod (304) is fixedly connected to the connecting post (301). The end of the connecting rod (304) away from the connecting post (301) is fixedly connected to the inner wall of the nozzle (2).

4. The tunnel concrete spraying volume adjusting nozzle according to claim 3, characterized in that: The connecting rods (304) are set as an array.

5. A tunnel concrete spraying volume adjusting nozzle according to claim 3, characterized in that: The outer wall of the end of the connecting column (301) away from the tapered part (305) is provided with a second connecting thread (302); the end of the connecting rod (304) away from the nozzle (2) is fixedly connected with a screw sleeve (303), and the connecting column (301) is threadedly connected to the screw sleeve (303) through the second connecting thread (302).

6. The tunnel concrete spraying volume adjusting nozzle according to claim 1, characterized in that: The connecting pipe (1) is provided with an adjusting thread (103) on the inner wall of the independent cavity near the nozzle (2); the outer wall of the nozzle (2) is provided with a threaded groove (201), and the connecting pipe (1) and the nozzle (2) are connected through the adjusting thread (103) and the threaded groove (201).

7. A tunnel concrete spraying volume adjusting nozzle according to claim 1, characterized in that: The outer wall of the nozzle (2) is provided with scale markings (203).

8. A tunnel concrete spraying volume adjusting nozzle according to claim 1, characterized in that: The nozzle (2) has a flow guide slope (202) on the inner wall of the end near the connecting pipe (1).

9. A tunnel concrete spraying volume adjusting nozzle according to claim 1, characterized in that: The connecting pipe (1) has a first connecting thread (104) on the inner wall of its independent chamber away from the nozzle (2) for connecting to the concrete conveying pipe.

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