A set accelerator atomizing mixing device for jetting 3D printing concrete test

Abstract

The utility model discloses a kind of for injection 3D printing concrete test accelerator atomization mixing device, including shell main body, porous mixing ring and limit ring, the shell main body and porous mixing ring are both open barrel type structure at both ends, the sidewall of shell main body is provided with accelerator injection interface, the both ends of shell main body are detachably provided with the flange plate for connecting concrete delivery pipeline, the surface of porous mixing ring is uniformly provided with through-hole, limit ring is set on the both sides of shell main body and is in flange inner ring, the inner ring of limit ring has annular groove embedded in the end of porous mixing ring, bayonet is also provided on annular groove, the end of porous mixing ring has protruding block matched with bayonet.The utility model is modular structure, can be combined with actual engineering application demand, realize quick assembly and shift, guarantee that accelerator can be with more uniform atomization state and concrete mixing, promote injection consistency.

Description

Technical Field

[0001] This utility model relates to the field of jet 3D printing concrete technology, and in particular to a setting accelerator atomization mixing device for jet 3D printing concrete experiments. Background Technology

[0002] Jetting 3D printing of concrete can replace manual concrete spraying and can print vertical and suspended structures. During the process, the accelerator and cement paste are prone to premature local reactions within the mixing chamber, leading to residue adhesion and gradual hardening. This is especially true in narrow areas such as pores and channels within the mixing unit, where large amounts of hardened cement residue accumulate and are difficult to clean completely. These residues not only affect the accuracy of material proportions but also continuously clog the bottom spray holes, causing uneven and intermittent spraying, severely impacting printing quality and test repeatability. Secondly, the fully movable mixing structure is prone to rotation or vibration under high-speed jetting, resulting in uneven atomization and unstable mixing of the accelerator and concrete, thus affecting the bonding performance and uniformity of the sprayed concrete. To overcome the shortcomings of existing technologies, there is an urgent need for a mixing device that can meet the needs of practical engineering applications, enabling rapid assembly and repositioning, ensuring the accelerator mixes with the concrete in a more uniform atomized state, and improving spraying consistency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to provide a mixing device that can be combined with the actual engineering application requirements to achieve rapid assembly and relocation, ensure that the accelerator can be mixed with concrete in a more uniform atomized state, and improve the consistency of spraying.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A accelerator atomization mixing device for 3D printed concrete spraying experiments includes a main shell, a porous mixing ring, and a limiting ring. Both the main shell and the porous mixing ring are cylindrical structures with open ends. The side wall of the main shell is provided with an accelerator injection port. Both ends of the main shell are provided with flanges for connecting concrete delivery pipelines. The surface of the porous mixing ring is evenly distributed with through holes. The limiting ring is located on both sides of the main shell and is located inside the flange. The inner ring of the limiting ring has an annular groove that is embedded in the end of the porous mixing ring. The annular groove is also provided with a locking slot. The end of the porous mixing ring has a protrusion that cooperates with the locking slot.

[0006] Furthermore, a sealing ring is provided between the flange and the concrete conveying pipeline.

[0007] Furthermore, the outer surface of the coagulant injection port has a threaded structure.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] This invention, with its detachable structure, allows for the removal and thorough cleaning or replacement of the core components after prolonged use, enabling rapid assembly and relocation. This effectively solves the problem of blocked orifices caused by residual cement slabs, ensuring the uniformity of the accelerator's mixing with concrete and the stability of the spraying process. The porous mixing ring, secured by a limiting ring, ensures its fixed position under high-speed fluid impact, preventing internal rotation or vibration. Furthermore, the uniform orifices on the porous mixing ring allow the atomized accelerator to be evenly and stably mixed into the concrete flow, significantly improving the mixing quality. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a diagram of the internal structure of the present invention;

[0012] Figure 3 This is a schematic diagram of the porous mixing ring in this utility model;

[0013] Figure 4 This is a schematic diagram of the limiting ring in this utility model;

[0014] Figure 5 This utility model is illustrated in the connection state diagram of a jet 3D printing concrete system.

[0015] Figure label:

[0016] 1-Outer shell body, 2-Flange, 3-Porous mixing ring, 4-Limiting ring, 5-Accelerator injection port, 6-Sealing ring, 31-Protrusion, 32-Through hole, 41-Bayonet. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 4As shown, a accelerator atomization mixing device for 3D printed concrete spraying experiments includes a main shell 1, a porous mixing ring 3, and a limiting ring 4. Both the main shell 1 and the porous mixing ring 3 are cylindrical structures with open ends. The side wall of the main shell 1 is provided with an accelerator injection port 5. Both ends of the main shell 1 are provided with flanges 2 for connecting concrete conveying pipes. The surface of the porous mixing ring 3 is evenly provided with through holes 32. The limiting ring 4 is located on both sides of the main shell 1 and is located inside the flange 2. The inner ring of the limiting ring 4 has an annular groove that is embedded in the end of the porous mixing ring 3. The annular groove is also provided with a bayonet 41. The end of the porous mixing ring 3 has a protrusion 31 that cooperates with the bayonet 41.

[0019] A sealing ring 6 is provided between the flange 2 and the concrete conveying pipe. The sealing ring 6 serves to seal the flange 2 and the concrete conveying pipe to prevent slurry leakage.

[0020] The outer surface of the coagulant injection port 5 has a threaded structure, which makes the pipe for pumping the air and coagulant mixture more tightly connected to the coagulant injection port 5.

[0021] like Figure 5 As shown, after connecting the concrete conveying pipeline, the concrete conveying pipeline further compresses the limiting ring 4, clamping the limiting ring 4 between the flange 2 and the porous mixing ring 3, thereby further limiting the position of the porous mixing ring 3. During operation, a high-pressure gas flow carrying liquid accelerator enters the annular cavity formed between the outer shell 1 and the porous mixing ring 3 through the accelerator injection port 5. Under pressure, the gas flow penetrates the through holes 32 on the porous mixing ring 3, and mixes thoroughly and uniformly with the central concrete slurry in an atomized form. The fixed-position porous mixing ring 3 can maintain its position under high-speed fluid impact, avoiding internal rotation or vibration.

[0022] When cleaning or replacement is required, the flange 2 can be removed from the housing body 1, and the porous mixing ring 3 can be taken out from the housing body 1 for thorough cleaning or replacement. This effectively solves the problem of blockage caused by residue caking, and maintenance is simple and safe.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for atomizing and mixing accelerators in 3D printed concrete experiments, characterized in that: The device includes a shell body (1), a porous mixing ring (3), and a limiting ring (4). Both the shell body (1) and the porous mixing ring (3) are cylindrical structures with open ends. The side wall of the shell body (1) is provided with a coagulant injection port (5). Both ends of the shell body (1) are detachably provided with flanges (2) for connecting concrete conveying pipes. The surface of the porous mixing ring (3) is evenly provided with through holes (32). The limiting ring (4) is provided on both sides of the shell body (1) and is located in the inner ring of the flange (2). The inner ring of the limiting ring (4) has an annular groove embedded in the end of the porous mixing ring (3). A bayonet (41) is also provided on the annular groove. The end of the porous mixing ring (3) has a protrusion (31) that cooperates with the bayonet (41).

2. The atomizing and mixing device for accelerators used in 3D printed concrete experiments according to claim 1, characterized in that: A sealing ring (6) is provided between the flange (2) and the concrete conveying pipeline.

3. The atomizing and mixing device for accelerators used in 3D printed concrete experiments according to claim 1, characterized in that: The outer surface of the coagulant injection port (5) has a threaded structure.

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