A device for adding quick-setting agent

Abstract

This utility model discloses a device for adding an accelerator, relating to the technical field of concrete spraying equipment. It includes a spray pipe for spraying concrete, with several rotating plates fixed to the outer wall near the spray nozzle. A sliding ring is slidably disposed on the inner wall of the spray pipe near the spray nozzle, initially tending to slide inwards. Several rotating blocks are rotatably connected to the circumference of the sliding ring, each block corresponding to one of the rotating plates. Initially, the rotating blocks slide with the sliding ring to the inner side of the spray pipe, and the thickness of the free end of the rotating block is greater than the thickness of the sliding ring. A connecting rod rotatably connected to the rotating plate is provided at the free end of the rotating block. By setting a slidable sliding ring and its driven rotating blocks and plates, the kinetic energy of the ring automatically triggers the deployment structure during concrete spraying, expanding the spray coverage area and avoiding the problem of concentrated injection of accelerator leading to clumps.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete spraying construction equipment, specifically to a quick-setting agent addition device. Background Technology

[0002] In tunnel excavation, slope protection, and other engineering construction, shotcrete is a common method of rapid support. To accelerate the initial setting speed of concrete, a accelerator is usually added simultaneously during the shotcrete process.

[0003] In shotcrete application, the quick-setting agent comes into direct contact with the concrete and is injected without being fully atomized or diffused. This can easily cause the quick-setting agent to clump together and react rapidly with the concrete in certain areas, reducing the uniformity of mixing and thus affecting the construction quality and structural strength of the shotcrete. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for adding accelerators.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A device for adding a quick-setting agent, comprising:

[0007] The nozzle is used for spraying concrete, and several rotating plates are fixed on the outer side of its outer wall near the spray nozzle.

[0008] A sliding ring is slidably disposed on the inner wall of the nozzle near the injection port. Initially, it tends to slide towards the inside of the nozzle. Several rotating blocks are rotatably connected to the circumference of the sliding ring. The position of each rotating block is respectively matched with the position of one of the rotating plates. Initially, the rotating blocks slide with the sliding ring to the inside of the nozzle. The thickness of the free end of the rotating block is greater than the thickness of the sliding ring. The free end of the rotating block is provided with a connecting rod rotatably connected to the rotating plate.

[0009] When the nozzle sprays concrete, the concrete impacts the rotating block in the direction of the nozzle nozzle. The rotating block moves to the outside of the nozzle nozzle and drives the rotating plate to unfold through the connecting rod.

[0010] Preferably, the sliding ring can slide relative to the nozzle by 10mm to 30mm. When the sliding ring slides to the maximum distance relative to the nozzle, the rotating block slides completely to the outside of the nozzle injection port.

[0011] Preferably, the rotating block can rotate 10°~20° relative to the sliding ring. When the rotating block rotates to its maximum range, the sidewall of the rotating block is in contact with the nozzle of the spray pipe.

[0012] Preferably, the rotating plate can rotate relative to the nozzle at an angle ranging from 45° to 60°.

[0013] Preferably, several of the aforementioned rotating blocks are set at equal angles.

[0014] Preferably, the inner wall of the sliding ring is provided with a buffer block, which is positioned in conjunction with the rotating block.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By setting a sliding ring and its driven rotating block and rotating plate, the structure is automatically triggered to unfold during concrete spraying using its kinetic energy, thereby dynamically opening the quick-setting agent nozzle, expanding the spray coverage area, enhancing the atomization and diffusion effect of the quick-setting agent in space, and avoiding the problem of quick-setting agent being concentrated and forming flocs.

[0017] 2. By positioning the accelerator spray point further away from the concrete nozzle, and simultaneously increasing the diversity and uniformity of the spray angle, the spatial mixing path of the accelerator before contact with the concrete is effectively extended, thereby improving the uniformity of its integration with the concrete and enhancing the structural density and initial setting consistency of the sprayed concrete. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 This is a schematic diagram of the quick-setting agent addition device;

[0020] Figure 2 for Figure 1 Schematic diagram of the internal structure of the nozzle;

[0021] Figure 3 for Figure 2 A structural diagram of the second state;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0023] Explanation of annotations in the image:

[0024] 1. Nozzle; 11. Rotating plate; 111. Nozzle head;

[0025] 2. Sliding ring; 21. Rotating block; 211. Connecting rod. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] Example

[0028] like Figures 1-4 As shown, an accelerator addition device includes a nozzle 1 and a sliding ring 2. The nozzle 1 is used for spraying concrete. Several rotating plates 11 are fixed on the outer side of the nozzle near the spray nozzle. The rotating plates 11 can rotate relative to the nozzle 1 within a certain angle range to change the spraying direction of the accelerator and realize the dynamic adjustment of the spraying range.

[0029] A nozzle 111 is provided near the free end of the rotating plate 11 facing the nozzle 1 outlet, through which a quick-setting agent is mixed into the concrete.

[0030] In one embodiment, such as Figures 2-3 As shown, the sliding ring 2 is slidably disposed on the inner wall of the nozzle 1 near the spray nozzle. Initially, it tends to slide towards the inside of the nozzle 1. Several rotating blocks 21 are rotatably connected to the circumference of the sliding ring 2. The position of each rotating block 21 is matched with the position of one of the rotating plates 11. Initially, the rotating blocks 21 slide with the sliding ring 2 to the inner side of the nozzle 1, and the thickness of the free end of the rotating block 21 is greater than the thickness of the sliding ring 2. The free end of the rotating block 21 is provided with a connecting rod 211 rotatably connected to the rotating plate 11. During the spraying operation, concrete is sprayed out at high speed from the spray nozzle 1, directly impacting the sliding ring 2 and the rotating blocks 21 on it, causing the rotating blocks 21 to move outward from the spray nozzle 1. After the rotating blocks 21 move to the outside of the spray nozzle, they rotate under the impact force of the concrete, and under the action of the connecting rod 211, they drive the rotating plate 11 to unfold, thereby expanding the spraying range of the accelerator and improving the uniformity of its mixing with the concrete.

[0031] In one embodiment, such as Figures 2-3 As shown, the sliding ring 2 can slide 10mm~30mm relative to the nozzle 1. When the sliding ring 2 slides to the maximum distance relative to the nozzle 1, the rotating block 21 slides completely to the outside of the nozzle 1. This structure ensures that when the concrete flow rate is high, the sliding ring 2 receives sufficient pushing force to make the rotating block 21 fully unfold, thereby achieving the maximum coverage of the accelerator spraying area, enhancing the spatial interweaving of the accelerator and concrete, and improving the mixing efficiency.

[0032] In one embodiment, such as Figures 2-4As shown, the rotating block 21 can rotate 10°~20° relative to the sliding ring 2. This structure allows the rotating block 21 to adapt to the structural shape of the nozzle 1 during sliding. When the rotating block 21 rotates to its maximum range, its sidewall is in contact with the nozzle 1, thus structurally guiding the direction of the accelerator injection, preventing spray angle deviation, and improving the accuracy and consistency of the accelerator injection. Furthermore, the contact between the sidewall of the rotating block 21 and the nozzle 1 restricts the rotation of the rotating block 21.

[0033] In one embodiment, such as Figures 2-3 As shown, the rotating plate 11 can rotate relative to the spray nozzle 1 at an angle range of 45° to 60°. This rotation angle setting can fully expand the rotating plate 11, change the spray range of the accelerator, and form an atomized area in a ring or fan shape, effectively expanding the coverage area, while improving the atomization and diffusion effect of the accelerator and preventing the accelerator from coming into contact with the concrete in clumps.

[0034] In one embodiment, such as Figures 2-3 As shown, several rotating blocks 21 are set at equal angles. Through the symmetrical arrangement at equal angles, the quick-setting agent nozzles are evenly distributed. When the device is fully deployed, it forms a ring-shaped multi-point spraying area, which can cover all directions around the spray nozzles, avoid spray dead corners, and further improve the uniformity of mixing between concrete and quick-setting agent.

[0035] In one embodiment, such as Figures 2-3 As shown, a buffer block is provided on the inner side wall of the sliding ring 2. The buffer block is positioned in conjunction with the rotating block 21. The buffer block is used to provide a certain damping and guidance when the concrete impacts the rotating block 21 at high speed, to prevent the rotating block 21 from being violently impacted and causing structural damage, to extend its service life, and to keep the rotating block 21 stable during the sliding process, thereby improving the smoothness and consistency of its unfolding action.

[0036] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A setting accelerator adding device characterized by comprising: include: The nozzle (1) is used for spraying concrete, and several rotating plates (11) are fixed on the outer side of its outer wall near the spray nozzle. A sliding ring (2) is slidably disposed on the inner wall of the nozzle (1) near the injection port. Initially, it tends to slide towards the inside of the nozzle (1). Several rotating blocks (21) are rotatably connected around the sliding ring (2). The position of each rotating block (21) is matched with the position of one of the rotating plates (11). Initially, the rotating block (21) slides to the inside of the nozzle (1) with the sliding ring (2). The thickness of the free end of the rotating block (21) is greater than the thickness of the sliding ring (2). The free end of the rotating block (21) is provided with a connecting rod (211) rotatably connected to the rotating plate (11). When the nozzle (1) sprays concrete, the concrete impacts the rotating block (21) in the direction of the nozzle (1) spraying port. The rotating block (21) moves to the outside of the nozzle (1) spraying port and drives the rotating plate (11) to unfold through the connecting rod (211).

2. The accelerator addition device according to claim 1, characterized in that: The sliding ring (2) can slide 10mm~30mm relative to the nozzle (1). When the sliding ring (2) slides to the maximum distance relative to the nozzle (1), the rotating block (21) slides completely to the outside of the nozzle (1) spray port.

3. The accelerator addition device according to claim 2, characterized in that: The rotating block (21) can rotate 10°~20° relative to the sliding ring (2). When the rotating block (21) rotates to its maximum range, the side wall of the rotating block (21) is attached to the nozzle of the nozzle (1).

4. The accelerator addition device according to claim 3, characterized in that: The rotating plate (11) can rotate relative to the nozzle (1) at an angle range of 45° to 60°.

5. The accelerator addition device according to claim 1, characterized in that: Several of the rotating blocks (21) are set at equal angles.

6. The accelerator addition device according to claim 1, characterized in that: The inner wall of the sliding ring (2) is provided with a buffer block, which is positioned in conjunction with the rotating block (21).

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