Carbon dioxide gas distribution device for concrete curing and use method

Abstract

The invention relates to the technical field of gas distribution devices, in particular to a carbon dioxide gas distribution device for concrete curing and a using method.The carbon dioxide gas distribution device comprises a gas conveying pipeline and a carbonization curing box assembly, the outer side of the gas conveying pipeline is fixedly connected with a cover plate assembly through a supporting frame, and the lower end of the cover plate assembly is fixedly connected with the carbonization curing box assembly through bolts; the inner side of the cover plate assembly is rotatably connected with a passive rotating assembly, the inner side of the passive rotating assembly is fixedly connected with a stirring gas distribution assembly, the passive rotating assembly comprises a center cylinder, the outer side of the center cylinder is fixedly connected with a second gear, the center cylinder and an extension plate are of an integrated fixed structure, and gas channels are formed in the inner sides of the center cylinder and the extension plate; according to the device, the problem that a carbon dioxide gas distribution device is prone to being blocked is effectively solved, the concrete particle entering probability is reduced, self-cleaning and blocking prevention are achieved, gas flowing is ensured, the mixing uniformity is improved, the curing effect is enhanced, and the concrete strength and durability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas distribution devices, specifically a carbon dioxide gas distribution device for concrete curing and a use method thereof. BACKGROUND

[0002] The carbon dioxide gas distribution device for concrete curing is a device used in the concrete curing process to improve curing efficiency and quality by reasonably distributing carbon dioxide gas. Its main function is to uniformly deliver carbon dioxide gas into the curing environment, allowing the concrete to fully absorb carbon dioxide during the curing process, thereby accelerating the carbonation reaction and improving the strength and durability of the concrete. The carbon dioxide gas distribution device for concrete curing is typically inserted into the deep part of the carbonation curing box to discharge gas into the interior of the curing box, while stirring is required to promote the carbonation process. This design ensures that carbon dioxide gas can be uniformly distributed and fully react with calcium and magnesium components in the concrete, thereby improving the strength and durability of the concrete. During the concrete curing process, the carbon dioxide gas distribution device is typically inserted into the deep part of the carbonation curing box to ensure that carbon dioxide gas can directly act on the concrete. To improve the uniformity of carbon dioxide distribution in the curing box, stirring is usually accompanied by the operation. However, this operation method has certain problems: when carbon dioxide is discharged from the gas distribution device, the impact of the concrete during the stirring process can cause small particles of concrete to splash and enter the interior of the gas distribution device. Once these small particles of concrete enter the gas distribution device, they will adhere to the inner wall of the pipe. Over time, these adhered concrete particles will gradually accumulate, eventually causing pipe blockage, thereby affecting the normal flow of carbon dioxide gas and reducing the curing effect. Therefore, a carbon dioxide gas distribution device for concrete curing and a use method thereof are proposed to address the above problems. SUMMARY

[0003] The present application aims to provide a carbon dioxide gas distribution device for concrete curing and a use method thereof to address the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The utility model provides a carbon dioxide gas distribution device for concrete curing and a use method, which comprises a gas conveying pipeline and a carbonation curing box assembly, the outer side of the gas conveying pipeline is fixedly connected with a cover plate assembly through a support frame, the lower end of the cover plate assembly is fixedly connected with the carbonation curing box assembly through bolts, the inner side of the cover plate assembly is rotatably connected with a passive rotation assembly, the inner side of the passive rotation assembly is fixedly connected with a stirring gas distribution assembly, the passive rotation assembly comprises a central cylinder, the outer side of the central cylinder is fixedly connected with a second gear, the central cylinder and an extension plate are fixedly connected in an integral structure, the inner sides of the central cylinder and the extension plate are both provided with gas channels, the stirring gas distribution assembly comprises a gas distribution rod, the bottom end of the gas distribution rod is fixedly connected with a bottom plate through bolts, the inner side of the bottom plate is rotatably connected with a rotating rod, the outer side of the rotating rod is fixedly connected with a spiral blade, the inner side of the gas distribution rod is provided with a flow channel, the inner side of the gas distribution rod is fixedly connected with the flow channel, and the upper end of the rotating rod is fixedly connected with a third gear through bolts.

[0005] As a further optimization of the utility model, the cover plate assembly comprises a cover plate body, the inner side of the cover plate body is provided with an axle rotation hole, the axle rotation hole is rotatably connected between the central cylinder, the inner side of the axle rotation hole is sealed with the central cylinder through a sealing ring, the top end of the cover plate body is fixedly connected with the shell of a driving motor, the outer side of the first gear is fixedly connected with the outer side of the second gear.

[0006] As a further optimization of the utility model, the top end of the cover plate body is fixedly connected with the support frame, a spacing is arranged between the cover plate body and the gas conveying pipeline, the gas conveying pipeline is sleeved on the outer side of the central cylinder, and the inner side of the gas conveying pipeline is attached to the outer side of the central cylinder through a sealing ring.

[0007] As a further optimization of the utility model, the carbonation curing box assembly comprises a carbonation curing box body, the carbonation curing box body is fixedly connected with a gear ring at a position close to the upper end, the inner side of the gear ring is meshed with the outer side of the third gear, the carbonation curing box body is fixedly connected with the cover plate body, and the carbonation curing box body is sealed between the cover plate body through a rubber pad.

[0008] As a further optimization of the utility model, the gas channel is communicated with the inner side of the gas conveying pipeline, the gas channel is provided with a fixed port at a position close to the gas distribution rod, and the fixed port of the gas channel is fixedly connected with the gas distribution rod.

[0009] As a further optimization of the utility model, the gas distribution rod is provided with a through hole at one end close to the gas channel, and the flow channel is communicated with the gas channel through the through hole of the gas distribution rod.

[0010] As a further optimization of the application, wherein: the bottom plate upper end is sealed between the rubber pad and the air distribution rod, the rotating rod upper end is rotatably connected to the air distribution rod upper end, the air distribution rod upper end is sealed with the rotating rod upper end by a rubber ring, a through hole is formed in the air distribution rod near the rubber duckbill valve, the spiral blade outer side is gap-fitted with the flow channel inner side, and the rubber duckbill valve is embedded in the air distribution rod interior.

[0011] As a further optimization of the application, wherein: the method comprises the following steps: Step one: during installation, the concrete is pumped into the interior of the carbonation curing box body, the cover plate assembly and the passive rotating assembly are combined, the passive rotating assembly is inserted into the interior of the carbonation curing box body, the cover plate body bottom end is aligned with the carbonation curing box body top end, the cover plate body is fixed to the carbonation curing box body by bolts, the gas delivery pipeline is aligned with the center cylinder, the gas delivery pipeline is inserted into the exterior of the center cylinder, the support frame is fixed to the cover plate body by bolts, and the external carbon dioxide delivery pipeline is connected to the gas delivery pipeline; Step two: when distributing the carbon dioxide gas into the interior of the carbonation curing box body, the gas delivery pipeline is connected to the external carbon dioxide gas delivery pipeline, the gas delivery pipeline delivers the carbon dioxide gas into the interior of the center cylinder, the gas is delivered into the flow channel of the air distribution rod through the gas channel, the flow channel generates a certain gas pressure expansion, the gas flows out through the interior of the rubber duckbill valve under the action of the gas pressure, the carbon dioxide is delivered into the interior of the carbonation curing box body, and at the same time, the driving motor is started, the driving motor drives the first gear to rotate, the first gear drives the center cylinder to rotate through the meshing extension plate, the center cylinder is rotatably connected to the interior of the cover plate body, the center cylinder drives the extension plate and the two stirring air distribution assemblies to rotate as a whole, and the driving motor controls the two stirring air distribution assemblies to face away from the direction of impacting the concrete; Step three: when the two stirring air distribution assemblies rotate, the third gear drives the rotating rod and the spiral blade to rapidly rotate under the action of the meshing of the third gear and the gear ring, the spiral blade scrapes and downwardly delivers the concrete on the inner wall of the flow channel, and the concrete is discharged through the rubber duckbill valve to prevent the concrete from being adhered to the inner wall of the flow channel, and the bottom plate and the air distribution rod are fixed in a detachable manner, so that the structure inside the air distribution rod can be maintained.

[0012] Compared with the prior art, the application has the following advantages: In this invention, by using a cover plate assembly, a passive rotation assembly, and a mixing and gas distribution assembly, the device effectively solves the problem of easy clogging of the carbon dioxide gas distribution device during concrete curing. It can significantly reduce the probability of concrete particles entering the gas distribution device due to mixing impact, while realizing self-cleaning of the concrete that has entered the gas distribution device, preventing pipe blockage, ensuring the normal flow of carbon dioxide gas, thereby improving the uniformity of carbon dioxide mixing with concrete, enhancing the curing effect, and improving the strength and durability of concrete. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall exploded structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure at point A; Figure 4 This is a cross-sectional structural diagram of the carbonization curing box assembly of the present invention; Figure 5 This is a cross-sectional structural diagram of the passive rotation component of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the structure at point B; Figure 7 This is a cross-sectional structural diagram of the stirring and air distribution component of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the structure at point C.

[0014] In the diagram: 1. Gas delivery pipeline; 2. Support frame; 3. Cover plate assembly; 31. Cover plate body; 32. Shaft rotation hole; 33. Drive motor; 34. First gear; 4. Carbonization curing box components; 41. Carbonization curing box body; 42. Gear ring; 5. Passive rotating assembly; 51. Central cylinder; 52. Second gear; 53. Extension plate; 54. Air passage; 6. Agitator and air distribution assembly; 61. Air distribution rod; 62. Base plate; 63. Rotating rod; 64. Spiral blade; 65. Rubber duckbill valve; 66. Flow channel; 67. Third gear. Detailed Implementation

[0015] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0016] It is to be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0017] Referring to Figures 1-8 The present application provides a technical solution: The carbon dioxide gas distribution device for concrete curing and the use method, comprising a gas delivery pipeline 1 and a carbonation curing box assembly 4, the outer side of the gas delivery pipeline 1 is fixedly connected with the cover plate assembly 3 through the support frame 2, the lower end of the cover plate assembly 3 is fixedly connected with the carbonation curing box assembly 4 through bolts, the inner side of the cover plate assembly 3 is rotatably connected with the passive rotation assembly 5, the inner side of the passive rotation assembly 5 is fixedly connected with the stirring gas distribution assembly 6, the passive rotation assembly 5 comprises a center cylinder 51, the outer side of the center cylinder 51 is fixedly connected with a second gear 52, the center cylinder 51 and the extension plate 53 are integrally fixed, the inner sides of the center cylinder 51 and the extension plate 53 are both provided with gas passages 54, the stirring gas distribution assembly 6 comprises a gas distribution rod 61, the bottom end of the gas distribution rod 61 is fixedly connected with a bottom plate 62 through bolts, the inner side of the bottom plate 62 is rotatably connected with a rotating rod 63, the outer side of the rotating rod 63 is fixedly connected with a spiral blade 64, the inner side of the gas distribution rod 61 is provided with a flow passage 66, the inner side of the gas distribution rod 61 is fixedly connected with the flow passage 66, and the upper end of the rotating rod 63 is fixedly connected with a third gear 67 through bolts.

[0018] As a further implementation of the present scheme, the cover plate assembly 3 comprises a cover plate body 31, an axle rotation hole 32 is formed in the inner side of the cover plate body 31, the axle rotation hole 32 is rotatably connected with the center cylinder 51, the inner side of the axle rotation hole 32 is sealed with the center cylinder 51 by a sealing ring, the top end of the cover plate body 31 is fixedly connected with the shell of the driving motor 33, the outer side of the main shaft of the driving motor 33 is fixedly connected with a first gear 34, the outer side of the first gear 34 is engaged with the outer side of the second gear 52, the top end of the cover plate body 31 is fixedly connected with the support frame 2, a spacing is provided between the cover plate body 31 and the gas conveying pipeline 1, the gas conveying pipeline 1 is sleeved on the outer side of the center cylinder 51, and the inner side of the gas conveying pipeline 1 is attached to the outer side of the center cylinder 51 by a sealing ring. Through the above arrangement, the passive rotating assembly 5 and the stirring and gas distributing assembly 6 can be driven to rotate as a whole, the effect of stirring the concrete in the carbonization curing box body 41 is realized, and the sealing between the cover plate body 31 and the center cylinder 51 can prevent the carbon dioxide in the carbonization curing box body 41 from flowing out; As a further implementation of the present scheme, the carbonization curing box assembly 4 comprises a carbonization curing box body 41, a gear ring 42 is fixedly connected to the position close to the upper end of the carbonization curing box body 41, the inner side of the gear ring 42 is engaged with the outer side of the third gear 67, the carbonization curing box body 41 is fixedly connected with the cover plate body 31, and the carbonization curing box body 41 is sealed with the cover plate body 31 by a rubber pad. Through the above arrangement, the carbonization curing box body 41 can be filled with concrete in a detachable manner between the cover plate body 31 and the carbonization curing box body 41, the engagement design can control the rotation of the spiral blade 64, the fixed connection of the carbonization curing box body 41 and the cover plate body 31 and the sealing of the rubber pad further enhance the structural stability and sealing performance of the device, and ensure the uniform distribution and normal flow of carbon dioxide gas in the carbonization curing box body 41; As a further implementation of the present scheme, the gas passage 54 is in communication with the inner side of the gas conveying pipeline 1, a fixed port is formed in the position close to the gas distributing rod 61 of the gas passage 54, and the fixed port of the gas passage 54 is fixedly connected with the gas distributing rod 61. Through the above arrangement, the carbon dioxide gas can be smoothly conveyed from the gas conveying pipeline 1 to the inside of the gas distributing rod 61, ensuring the smoothness and stability of gas conveying; As a further implementation of the present scheme, the air distribution rod 61 is provided with a through hole near one end of the air passage 54, the flow passage 66 communicates with the air passage 54 through the through hole of the air distribution rod 61, the bottom plate 62 is sealed between the upper end and the air distribution rod 61 through a rubber pad, the upper end of the rotating rod 63 is rotatably connected with the upper end of the air distribution rod 61, the upper end of the air distribution rod 61 is sealed with the upper end of the rotating rod 63 through a rubber ring, the air distribution rod 61 is provided with a through hole near the position of the rubber duckbill valve 65, the outer side of the spiral blade 64 is gap-fitted with the inner side of the flow passage 66, and the rubber duckbill valve 65 is embedded in the inside of the air distribution rod 61. Through the above setting, the inside of the flow passage 66 is self-cleaning, the accumulation of concrete particles on the inner wall of the flow passage 66 is prevented to cause blockage, and the anti-blocking ability and operation efficiency of the device are improved.

[0019] Work flow: when installing, the concrete conveying is filled into the inside of the carbonation curing box body 41, the cover plate assembly 3 and the passive rotating assembly 5 are combined at this time, the passive rotating assembly 5 is inserted into the inside of the carbonation curing box body 41, the bottom end of the cover plate body 31 is aligned with the top end of the carbonation curing box body 41, then the cover plate body 31 and the carbonation curing box body 41 are fixed through bolts, the center tube 51 is aligned with the gas conveying pipeline 1, the gas conveying pipeline 1 is inserted outside the center tube 51, the supporting frame 2 is fixed with the cover plate body 31 through bolts, the pipeline for conveying carbon dioxide outside is connected with the gas conveying pipeline 1, and the installation is completed. When the carbon dioxide gas is distributed to the inside of the carbonation curing box body 41, the gas conveying pipe 1 is connected with the external carbon dioxide gas conveying pipe 1, the carbon dioxide gas is conveyed to the inside of the center cylinder 51 through the gas conveying pipe 1, and is conveyed to the flow passage 66 opened in the gas distribution rod 61 through the gas passage 54, at this time, the flow passage 66 is expanded under the action of the gas pressure, and the gas flows out through the inside of the rubber duckbill valve 65, so that the carbon dioxide is conveyed to the inside of the carbonation curing box body 41, at the same time, the driving motor 33 is started, the driving motor 33 drives the first gear 34 to rotate, the first gear 34 drives the center cylinder 51 to rotate through the engaging extension plate 53, the center cylinder 51 is connected in the inside of the cover plate body 31, the center cylinder 51 drives the extension plate 53 and the two stirring and gas distribution assemblies 6 to rotate as a whole, since the driving motor 33 controls the two stirring and gas distribution assemblies 6 to face away from the direction of the impact of the concrete, so that the rubber duckbill valve 65 is prevented from being subjected to a greater pressure due to the rotation of the concrete, and the risk of the concrete entering the inside of the flow passage 66 is significantly reduced, and the uniformity of the mixing of the carbon dioxide and the concrete is improved, when the two stirring and gas distribution assemblies 6 rotate, the third gear 67 drives the rotating rod 63 and the spiral blade 64 to rotate rapidly under the action of the engagement of the third gear 67 and the gear ring 42, the rapid rotation can make the rotating rod 63 and the spiral blade 64 make the concrete fall on the inner wall of the flow passage 66 through the centrifugal action, and the spiral blade 64 can scrape and convey the concrete on the inner wall of the flow passage 66 downward through the rotation of the spiral blade 64, and the concrete is discharged through the rubber duckbill valve 65, so that the concrete is prevented from being adhered to the inner wall of the flow passage 66, the bottom plate 62 and the gas distribution rod 61 are fixed, so that the bottom plate 62 can be disassembled, and the structure inside the gas distribution rod 61 can be maintained; In summary of the above principles, the device can uniformly distribute the carbon dioxide to the inside of the carbonation curing box body 41, and can significantly reduce the entry of the concrete into the inside of the gas distribution device due to the impact force of the concrete during stirring, and the device can realize the self-cleaning of the concrete from the inside of the gas distribution device, can significantly reduce the phenomenon of the blockage of the pipe and the normal flow of the carbon dioxide gas, and can improve the curing effect.

[0020] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A carbon dioxide gas distribution device for concrete curing, comprising a gas delivery pipeline (1) and a carbonation curing box assembly (4), characterized in that: The gas delivery pipeline (1) is fixedly connected to the cover plate assembly (3) via a support frame (2) on the outside. The lower end of the cover plate assembly (3) is fixedly connected to the carbonization curing box assembly (4) via bolts. The passive rotating assembly (5) is rotatably connected to the inside of the cover plate assembly (3). The stirring and gas distribution assembly (6) is fixedly connected to the inside of the passive rotating assembly (5). The passive rotating assembly (5) includes a central cylinder (51), a second gear (52) is fixedly connected to the outside of the central cylinder (51), the central cylinder (51) and the extension plate (53) are integrally fixed structures, and air passages (54) are opened on the inner sides of the central cylinder (51) and the extension plate (53). The stirring and gas distribution assembly (6) includes a gas distribution rod (61), the bottom end of which is fixedly connected to a base plate (62) by bolts, a rotating rod (63) is rotatably connected to the inner side of the base plate (62), a spiral blade (64) is fixedly connected to the outer side of the rotating rod (63), a flow channel (66) is opened on the inner side of the gas distribution rod (61), the flow channel (66) is fixedly connected to the inner side of the gas distribution rod (61), and a third gear (67) is fixedly connected to the upper end of the rotating rod (63) by bolts.

2. The carbon dioxide gas distribution device for concrete curing according to claim 1, characterized in that: The cover plate assembly (3) includes a cover plate body (31), and a shaft rotation hole (32) is provided on the inner side of the cover plate body (31). The shaft rotation hole (32) is rotatably connected to the central cylinder (51). The inner side of the shaft rotation hole (32) is sealed with the central cylinder (51) by a sealing ring. The top of the cover plate body (31) is fixedly connected to the housing of the drive motor (33). A first gear (34) is fixedly connected to the outer side of the main shaft of the drive motor (33). The outer side of the first gear (34) meshes with the outer side of the second gear (52).

3. A carbon dioxide gas distribution device for concrete curing according to claim 2, characterized in that: The top of the cover plate body (31) is fixedly connected to the support frame (2). There is a gap between the cover plate body (31) and the gas conveying pipe (1). The gas conveying pipe (1) is sleeved on the outside of the central cylinder (51). The inside of the gas conveying pipe (1) is fitted to the outside of the central cylinder (51) through a sealing ring.

4. A carbon dioxide gas distribution device for concrete curing according to claim 1, characterized in that: The carbonization curing box assembly (4) includes a carbonization curing box body (41), a gear ring (42) is fixedly connected to the upper part of the carbonization curing box body (41), the inner side of the gear ring (42) meshes with the outer side of the third gear (67), the carbonization curing box body (41) is fixedly connected to the cover plate body (31), and the carbonization curing box body (41) is sealed to the cover plate body (31) by a rubber gasket.

5. A carbon dioxide gas distribution device for concrete curing according to claim 1, characterized in that: The gas passage (54) is connected to the inside of the gas delivery pipe (1). The gas passage (54) has a fixed opening near the gas distribution rod (61). The fixed opening of the gas passage (54) is fixedly connected to the gas distribution rod (61).

6. A carbon dioxide gas distribution device for concrete curing according to claim 1, characterized in that: The air distribution rod (61) has a through hole at one end near the air channel (54), and the flow channel (66) is connected to the air channel (54) through the through hole of the air distribution rod (61).

7. A carbon dioxide gas distribution device for concrete curing according to claim 1, characterized in that: The upper end of the base plate (62) is sealed to the air distribution rod (61) through a rubber pad. The upper end of the rotating rod (63) is rotatably connected to the upper end of the air distribution rod (61). The upper end of the air distribution rod (61) is sealed to the upper end of the rotating rod (63) through a rubber ring. A through hole is provided on the air distribution rod (61) near the rubber duckbill valve (65). The outer side of the spiral blade (64) is clearance-fitted with the inner side of the flow channel (66). The rubber duckbill valve (65) is embedded inside the air distribution rod (61).

8. A method of using a carbon dioxide gas distribution device for concrete curing according to any one of claims 1-7, characterized in that: Includes the following steps: Step 1: During installation, concrete is poured into the interior of the carbonation curing box body (41). The cover plate assembly (3) and the passive rotating assembly (5) are combined into a single structure. The passive rotating assembly (5) is inserted into the interior of the carbonation curing box body (41). Step 2: After aligning the bottom of the cover plate body (31) with the top of the carbonization curing box body (41), fix the cover plate body (31) and the carbonization curing box body (41) with bolts. Align the gas delivery pipe (1) with the central cylinder (51) and insert the gas delivery pipe (1) into the outside of the central cylinder (51). Fix the support frame (2) to the cover plate body (31) with bolts. Connect the external carbon dioxide delivery pipe to the gas delivery pipe (1) to distribute the carbon dioxide gas into the interior of the carbonization curing box body (41). When the carbon dioxide gas is distributed into the interior of the carbonization curing box body (41), the gas delivery pipe (1) is connected to the external carbon dioxide gas delivery pipe (1). The gas delivery pipe (1) delivers the carbon dioxide gas into the interior of the central cylinder (51) and delivers it through the gas channel (54). Inside the flow channel (66) opened by the air distribution rod (61), the flow channel (66) generates a certain air pressure expansion. Under the action of gas pressure, the gas flows out through the rubber duckbill valve (65), and carbon dioxide is transported to the interior of the carbonization curing box body (41). At the same time, the drive motor (33) is started. The drive motor (33) drives the first gear (34) to rotate. The first gear (34) drives the central cylinder (51) to rotate through the meshing extension plate (53). The central cylinder (51) is rotated and connected to the interior of the cover plate body (31). The central cylinder (51) drives the extension plate (53) and the two mixing air distribution components (6) to rotate as a whole. The drive motor (33) controls the two mixing air distribution components (6) to be in the opposite direction to the concrete impact. Step 3: When the two mixing and air distribution components (6) rotate, the third gear (67) will drive the rotating rod (63) and the spiral blade (64) to rotate rapidly through the meshing action of the third gear (67) and the gear ring (42). The spiral blade (64) will scrape and convey the concrete on the inner wall of the flow channel (66) downwards and discharge it through the rubber duckbill valve (65) to prevent the concrete from sticking to the inner wall of the flow channel (66). The bottom plate (62) and the air distribution rod (61) are fixed in such a way that the bottom plate (62) can be disassembled to maintain the internal structure of the air distribution rod (61).

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