Device for preparing green low-carbon concrete by using carbon dioxide curing technology

Abstract

The utility model discloses a device for preparing green low-carbon concrete by carbon dioxide curing technology, which comprises a support frame, support legs, a tank body, a blanking pipe, an air inlet mechanism, an exhaust pipe, a cover plate and a stirring mechanism, the support legs are fixed at the bottom of the support frame, the tank body is fixed on the support frame, the blanking pipe is arranged at the bottom of the tank body, and the air inlet mechanism is arranged on the bottom of the tank body. The air inlet mechanism is fixed to the inner wall of the tank body, the exhaust pipe is installed on the side face of the tank body, and the cover plate is clamped to the top of the tank body. Compared with the prior art, the carbon dioxide stirring device has the advantages that the air inlet mechanism is matched with the stirring mechanism, carbon dioxide is injected into the device through the air inlet pipe, the air distributing pipe and the spray heads, the stirring mechanism is matched with the connecting pipe to stir concrete at the bottom, and the carbon dioxide can be fully mixed with the concrete conveniently; and after the concrete is fully mixed, the stirring mechanism is matched with the discharging pipe to discharge the concrete, so that the subsequent curing quality of the concrete is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete preparation technology, and in particular to an apparatus for preparing green and low-carbon concrete using carbon dioxide curing technology. Background Technology

[0002] The core principle of carbon dioxide curing technology in concrete preparation is to utilize the reaction between carbon dioxide and alkaline components in concrete (such as hydrated lime and calcium silicate hydrate) to form calcium carbonate mineral precipitates, thereby sealing in the carbon dioxide. This reaction not only seals in the carbon dioxide but also improves the mechanical properties of the concrete.

[0003] The existing Chinese patent CN222096533U, "An apparatus for preparing green and low-carbon concrete using carbon dioxide curing technology," discloses an apparatus for curing concrete using carbon dioxide. This apparatus primarily involves placing concrete specimens in a sealed container and introducing carbon dioxide gas for curing. However, this apparatus has several shortcomings. The method of introducing carbon dioxide gas is relatively simple, only introducing it from the top of the container, resulting in uneven gas distribution within the container and inconsistent curing levels in different parts of the concrete, affecting product quality. Therefore, we propose an apparatus for preparing green and low-carbon concrete using carbon dioxide curing technology. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for preparing green and low-carbon concrete using carbon dioxide curing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An apparatus for preparing green low-carbon concrete using carbon dioxide curing technology includes a support frame, support legs, a tank, a feeding pipe, an air inlet mechanism, an exhaust pipe, a cover plate, and a stirring mechanism. The support legs are fixed to the bottom of the support frame, the tank is fixed to the support frame, the feeding pipe is installed at the bottom of the tank, the air inlet mechanism is fixed to the inner wall of the tank, the exhaust pipe is installed on the side of the tank, the cover plate is snapped onto the top of the tank, and the stirring mechanism is inserted into the air inlet mechanism and the feeding pipe. A sealing plug is installed inside the feeding pipe.

[0007] Preferably, the air intake mechanism includes an air distribution pipe, an air intake pipe, a nozzle, and a connecting frame. The air distribution pipe is fixed inside the tank, the air intake pipe communicates with the air distribution pipe and extends through the side wall of the tank, a nozzle is installed at the bottom of the air distribution pipe, and a connecting pipe is fixed between the connecting frames.

[0008] Preferably, the number of nozzles is several groups, and the several groups of nozzles are located at the bottom of the air distribution pipe and are distributed in a circumferential array.

[0009] Preferably, the number of connecting frames is several sets, and the connecting pipe is rotatably connected to the stirring mechanism.

[0010] Preferably, the stirring mechanism includes a motor mounted on the cover plate, the output shaft of the motor passing through the cover plate and connected to a first rotating shaft, a first feeding screw fixed to the bottom of the first rotating shaft, a second rotating shaft fixed to the bottom of the first feeding screw, a second feeding screw fixed to the bottom of the second rotating shaft, and stirring blades mounted on the side of the second rotating shaft.

[0011] Preferably, the first feeding screw is rotatably connected to the connecting pipe, and the second feeding screw is rotatably connected to the discharge pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention combines an air intake mechanism and a stirring mechanism. Carbon dioxide is injected into the device through an air intake pipe, a distribution pipe, and a nozzle. The stirring mechanism, in conjunction with a connecting pipe, stirs the concrete at the bottom, facilitating thorough mixing of carbon dioxide and concrete. An exhaust pipe removes excess carbon dioxide. After thorough mixing, the concrete is discharged through a discharge pipe using the stirring mechanism, which greatly improves the subsequent curing quality of the concrete. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the device for preparing green low-carbon concrete using carbon dioxide curing technology proposed in this utility model.

[0015] Figure 2 for Figure 1 Installation diagram of the central air intake mechanism and the tumbling mechanism;

[0016] Figure 3 for Figure 2 A schematic diagram of the installation of the central air duct.

[0017] In the diagram: 1 Support frame, 2 Support leg, 3 Tank body, 4 Feed pipe, 5 Air inlet mechanism, 51 Air distribution pipe, 52 Air inlet pipe, 53 Nozzle, 54 Connecting frame, 55 Connecting pipe, 6 Exhaust pipe, 7 Cover plate, 8 Tumbling mechanism, 81 Motor, 82 First rotating shaft, 83 First feeding screw, 84 Second rotating shaft, 85 Stirring blade, 86 Second feeding screw, 9 Sealing plug. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-3 An apparatus for preparing green low-carbon concrete using carbon dioxide curing technology includes a support frame 1, support legs 2, a tank body 3, a feeding pipe 4, an air inlet mechanism 5, an exhaust pipe 6, a cover plate 7, and a stirring mechanism 8. The support legs 2 are fixed to the bottom of the support frame 1, the tank body 3 is fixed to the support frame 1, the feeding pipe 4 is installed at the bottom of the tank body 3, the air inlet mechanism 5 is fixed to the inner wall of the tank body 3, the exhaust pipe 6 is installed on the side of the tank body 3, the cover plate 7 is snapped onto the top of the tank body 3, and the stirring mechanism 8 is inserted into the air inlet. Inside the mechanism 5 and the feed pipe 4, a sealing plug 9 is installed inside the feed pipe 4. The air intake mechanism 5 includes an air distribution pipe 51, an air intake pipe 52, a nozzle 53, and a connecting frame 54. The air distribution pipe 51 is fixed inside the tank body 3. The air intake pipe 52 communicates with the air distribution pipe 51 and extends out of the side wall of the tank body 3. A nozzle 53 is installed at the bottom of the air distribution pipe 51. Connecting pipes 55 are fixed between the connecting frames 54. There are several groups of nozzles 53, which are located at the bottom of the air distribution pipe 51 and are distributed in a circumferential array. The number of connecting frames 54 is several sets. The connecting pipe 55 is rotatably connected to the stirring mechanism 8. The stirring mechanism 8 includes a motor 81 mounted on the cover plate 7. The output shaft of the motor 81 passes through the cover plate 7 and is connected to a first rotating shaft 82. A first feeding screw 83 is fixed to the bottom of the first rotating shaft 82. A second rotating shaft 84 is fixed to the bottom of the first feeding screw 83. A second feeding screw 86 is fixed to the bottom of the second rotating shaft 84. A stirring blade 85 is installed on the side of the second rotating shaft 84. The first feeding screw 83 is rotatably connected to the connecting pipe 55, and the second feeding screw 86 is rotatably connected to the discharge pipe 4. By setting up an air intake mechanism and a stirring mechanism in cooperation, carbon dioxide is injected into the device through the air intake pipe, air distribution pipe and nozzle. The stirring mechanism, in cooperation with the connecting pipe, stirs the concrete at the bottom, which facilitates the full mixing of carbon dioxide and concrete. The exhaust pipe removes excess carbon dioxide. After full mixing, the concrete is discharged through the stirring mechanism in cooperation with the discharge pipe, which greatly improves the subsequent curing quality of the concrete.

[0020] In use, the device is connected to a power source, concrete is poured into the tank 3, and then the cover plate 7 is installed so that the first feeding screw 83 is inserted into the connecting pipe 55 and the second feeding screw 86 is inserted into the discharge pipe 4. Carbon dioxide is injected into the device through the air inlet pipe 52, the air distribution pipe 52 and the nozzle 53. The motor 81 is started in reverse, and the output shaft of the motor 81 drives the first rotating shaft 82, the first feeding screw 83, the second rotating shaft 84, the stirring blade 85 and the second feeding screw 86 to rotate in opposite directions. The first feeding screw 83, in conjunction with the connecting pipe 55, stirs up the concrete at the bottom, so that the carbon dioxide is fully mixed with the concrete. The exhaust pipe 6 discharges excess carbon dioxide. After the mixture is fully mixed, the sealing plug 9 is opened and the motor 81 is started in the forward direction, so that the first rotating shaft 82, the first feeding screw 83, the second rotating shaft 84, the stirring blade 85 and the second feeding screw 86 rotate in the forward direction. The concrete is discharged through the second feeding screw 86 in conjunction with the discharge pipe 4.

[0021] In summary, compared with the prior art, this utility model, by setting up an air intake mechanism and a stirring mechanism in combination, uses an air intake pipe, a distribution pipe and a nozzle to inject carbon dioxide into the device, and the stirring mechanism, together with the connecting pipe, stirs the concrete at the bottom, so that the carbon dioxide can be fully mixed with the concrete. The exhaust pipe removes excess carbon dioxide. After being fully mixed, the stirring mechanism, together with the discharge pipe, discharges the concrete, which greatly improves the subsequent curing quality of the concrete.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An apparatus for preparing green low-carbon concrete using carbon dioxide curing technology, comprising a support frame (1), support legs (2), a tank body (3), a feeding pipe (4), an air inlet mechanism (5), an exhaust pipe (6), a cover plate (7), and a stirring mechanism (8), characterized in that, The support leg (2) is fixed to the bottom of the support frame (1), the tank (3) is fixed to the support frame (1), the discharge pipe (4) is installed at the bottom of the tank (3), the air intake mechanism (5) is fixed to the inner wall of the tank (3), the exhaust pipe (6) is installed on the side of the tank (3), the cover plate (7) is snapped onto the top of the tank (3), the stirring mechanism (8) is inserted into the air intake mechanism (5) and the discharge pipe (4), and a sealing plug (9) is installed inside the discharge pipe (4).

2. The apparatus for preparing green low-carbon concrete using carbon dioxide curing technology according to claim 1, characterized in that, The air intake mechanism (5) includes an air distribution pipe (51), an air intake pipe (52), a nozzle (53), and a connecting frame (54). The air distribution pipe (51) is fixed inside the tank body (3). The air intake pipe (52) is connected to the air distribution pipe (51) and extends through the side wall of the tank body (3). A nozzle (53) is installed at the bottom of the air distribution pipe (51). A connecting pipe (55) is fixed between the connecting frames (54).

3. The apparatus for preparing green low-carbon concrete using carbon dioxide curing technology according to claim 2, characterized in that, The number of nozzles (53) is several groups, and the several groups of nozzles (53) are located at the bottom of the air distribution pipe (51) and are distributed in a circumferential array.

4. The apparatus for preparing green low-carbon concrete using carbon dioxide curing technology according to claim 2, characterized in that, The number of connecting frames (54) is several sets, and the connecting pipe (55) is rotatably connected to the stirring mechanism (8).

5. The apparatus for preparing green low-carbon concrete using carbon dioxide curing technology according to claim 4, characterized in that, The stirring mechanism (8) includes a motor (81) mounted on a cover plate (7). The output shaft of the motor (81) passes through the cover plate (7) and is connected to a first rotating shaft (82). A first feeding screw (83) is fixed to the bottom of the first rotating shaft (82). A second rotating shaft (84) is fixed to the bottom of the first feeding screw (83). A second feeding screw (86) is fixed to the bottom of the second rotating shaft (84). A stirring blade (85) is mounted on the side of the second rotating shaft (84).

6. The apparatus for preparing green low-carbon concrete using carbon dioxide curing technology according to claim 5, characterized in that, The first feeding screw (83) is rotatably connected to the connecting pipe (55), and the second feeding screw (86) is rotatably connected to the discharge pipe (4).

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