A high-performance concrete admixture preparation and delivery structure

Abstract

The utility model relates to the technical field of concrete preparation, and disclose a kind of high-performance concrete admixture preparation conveying structure, including the annular mounting frame between the mixer and machine cover, annular mounting frame and the top fixed communication of mixer, the outside of annular mounting frame is connected with admixture pipe, several spray heads are fixedly communicated with the side of admixture pipe close to annular mounting frame, several cooperation holes are opened in the outer wall of annular mounting frame, and several spray heads are fixedly connected with the inner wall of several cooperation holes, and are communicated with mixer, and the outer wall of admixture pipe is fixedly communicated with the communicating pipe.This kind of high-performance concrete admixture preparation conveying structure, by the multiple spray heads of surrounding arrangement simultaneously with admixture into mixer interior, realize the uniform distribution of admixture in mixing area, effectively improve the mixing efficiency of admixture, to optimize the preparation effect of high-performance concrete.

Description

Technical Field

[0001] This utility model relates to the field of concrete preparation technology, specifically to a high-performance concrete admixture preparation and conveying structure. Background Technology

[0002] High-performance concrete (HPC) has become a key material in modern major infrastructure construction (such as cross-sea bridges, super high-rise buildings, nuclear power projects, and high-speed railways) due to its excellent strength, durability, volume stability, and workability. The performance of HPC depends not only on optimized mix design and high-quality raw materials, but more importantly on the application of high-efficiency chemical admixtures. Currently, widely used polycarboxylate-based high-performance water-reducing agents, retarders, air-entraining agents, thickeners, and other functional admixtures are mostly liquid concentrated products, and their dosage is usually only 0.1% to 3.0% of the total cementitious materials. Although the dosage is small, it has a decisive influence on the fluidity, slump retention, setting time control, early strength development, and crack resistance of concrete.

[0003] In existing concrete production systems, liquid admixtures are typically added using either a "direct injection method" or a "pipeline delivery + static mixing" method. The admixture (pre-diluted or used directly) is delivered to the concrete mixing host via a metering pump through a pipeline. During the mixing process, the mechanical shearing action of the mixing blades ensures that the admixture is fully mixed with dry and wet materials such as cement and aggregates, thereby achieving a uniform combination of the admixture and concrete raw materials.

[0004] However, during the mixing process, due to the small amount of admixtures added and their high viscosity, they tend to concentrate in localized areas after direct injection. Relying solely on the mechanical shearing action of the mixing blades results in low dispersion efficiency, making it difficult to achieve uniform distribution of admixtures in a short time, let alone meet the requirements for molecular-level dispersion. This is especially true in high-strength concrete and self-compacting concrete (SCC), where the uniformity of admixture distribution is even more critical. Traditional methods are prone to causing localized over- or under-admixture, leading to fluctuations in concrete performance and quality problems such as segregation, bleeding, and delayed or rapid setting. To compensate for uneven mixing, the mixing time is usually extended to promote admixture diffusion. This not only reduces the production efficiency of the mixing plant but also increases the motor load of the mixing host, resulting in increased energy consumption, which contradicts the green and low-carbon development direction. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a high-performance concrete admixture preparation and conveying structure, thereby improving the admixture addition effect during the concrete preparation process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-performance concrete admixture preparation and conveying structure, including an annular mounting frame installed between a mixer and a machine cover, the annular mounting frame being fixedly connected to the top of the mixer, an admixture pipe connected to the outer side of the annular mounting frame, a plurality of nozzles being fixedly connected to the side of the admixture pipe near the annular mounting frame, a plurality of mating holes being opened through the outer wall of the annular mounting frame, the plurality of nozzles being fixedly connected to the inner walls of the plurality of mating holes and connected to the mixer, and a connecting pipe being fixedly connected to the outer wall of the admixture pipe.

[0007] Furthermore, an annular scraper is slidably connected to the inner side of the annular mounting frame, and an adjustment component is connected between the annular scraper and the annular mounting frame.

[0008] Furthermore, the adjustment assembly includes several telescopic components. The annular scraper has several cavities on its side wall near the annular mounting frame. The cavities are distributed circumferentially along the axis of the annular scraper. The telescopic components are located inside the cavities. The telescopic components are all fixedly connected to the inner wall of the annular mounting frame. The telescopic ends of the telescopic components are fixedly connected to adjacent cavities.

[0009] Furthermore, the annular scraper has beveled surfaces on both the upper and lower ends of the side away from the annular mounting frame.

[0010] Furthermore, fixing rings are fixedly connected to both the upper and lower sides of the outer wall of the admixture tube, and both fixing rings are fixedly connected to the outer wall of the annular mounting frame.

[0011] Furthermore, a valve is installed on the connecting pipe.

[0012] Furthermore, the valve is a flow control valve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This high-performance concrete admixture preparation and delivery structure uses multiple nozzles arranged in a circular pattern to simultaneously spray the admixture into the mixer, achieving uniform distribution of the admixture in the mixing area, effectively improving the mixing efficiency of the admixture, and thus optimizing the preparation effect of high-performance concrete. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall connection structure of this utility model;

[0016] Figure 2 This is an exploded view of the connection structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the annular mounting frame of this utility model;

[0018] Figure 4 For based on Figure 3Another form of connection structure diagram.

[0019] In the diagram: 1. Mixer; 2. Machine cover; 3. Annular mounting frame; 4. Additive pipe; 5. Nozzle; 6. Connecting pipe; 7. Annular scraper; 8. Adjustment component; 41. Fixing ring; 61. Valve; 81. Telescopic component; 301. Mating hole; 801. Cavity. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 4 A high-performance concrete admixture preparation and conveying structure includes an annular mounting frame 3 installed between a mixer 1 and a machine cover 2. The annular mounting frame 3 is fixedly connected to the top of the mixer 1. An admixture pipe 4 is connected to the outer side of the annular mounting frame 3. Several nozzles 5 are fixedly connected to the side of the admixture pipe 4 near the annular mounting frame 3. Several mating holes 301 are opened through the outer wall of the annular mounting frame 3. The several nozzles 5 are fixedly connected to the inner wall of the several mating holes 301 and are connected to the mixer 1. A connecting pipe 6 is fixedly connected to the outer wall of the admixture pipe 4.

[0022] The main improvement of this invention lies in enhancing the delivery and addition effect of admixtures during the preparation of high-performance concrete, such as... Figures 1 to 4 As shown, the high-performance concrete admixture preparation and conveying structure of this utility model, when in use, injects the admixture into the admixture pipe 4 through the connecting pipe 6, and uses multiple nozzles 5 to evenly spray the admixture into the mixer 1. This avoids the problem of local over-mixing caused by concentrated addition of admixture, allowing the admixture to be evenly distributed in the mixer 1, promoting faster diffusion and mixing of the admixture with the internal concrete, and improving the production efficiency of the mixing plant. It should be noted that the admixture added in this way needs to be provided with a certain conveying pressure by a liquid pump to ensure that the admixture can be smoothly sprayed out through the nozzles 5. The annular mounting frame 3 provides support for the admixture pipe 4 and the nozzles 5, preventing the machine cover 2 from squeezing and damaging the admixture pipe 4 and the nozzles 5 when it is placed on the mixer 1.

[0023] like Figures 1 to 4As shown, an annular scraper 7 is slidably connected to the inner side of the annular mounting frame 3, and an adjusting component 8 is connected between the annular scraper 7 and the annular mounting frame 3. After the admixture is sprayed and added, the annular scraper 7 can be driven to move up and down inside the annular mounting frame 3 through the adjusting component 8, thereby sealing the mating hole 301 of the nozzle 5 on the annular mounting frame 3. This can prevent concrete from splashing into the mating hole 301 during the mixing process, causing blockage of the mating hole 301 and the nozzle 5.

[0024] like Figures 1 to 4 As shown, the adjusting assembly 8 includes several telescopic components 81. The annular scraper 7 has several cavities 801 on its side wall near the annular mounting frame 3. These cavities 801 are circumferentially distributed along the axis of the annular scraper 7. The telescopic components 81 are located inside each cavity 801 and are fixedly connected to the inner wall of the annular mounting frame 3. The telescopic ends of the telescopic components 81 are fixedly connected to adjacent cavities 801. The multiple telescopic components 81 are evenly distributed within the cavities 801 on the outer side of the annular scraper 7 and fixed to the inner side of the annular mounting frame 3, providing a uniform driving force to the annular scraper 7, allowing it to move stably up and down within the annular mounting frame 3.

[0025] like Figure 3 and Figure 4 As shown, the annular scraper 7 has inclined surfaces on both the upper and lower ends away from the annular mounting frame 3. The inclined surfaces on both the upper and lower sides of the annular scraper 7 allow concrete splashed onto and above the annular scraper 7 to slide more smoothly down the upper inclined surface and fall back into the mixer 1. The lower inclined surface reduces the amount of concrete adhering to and solidifying at the bottom of the annular scraper 7, facilitating subsequent cleaning of the concrete adhering to the annular scraper 7.

[0026] like Figures 1 to 4 As shown, fixing rings 41 are fixedly connected to both the upper and lower sides of the outer wall of the admixture tube 4, and both fixing rings 41 are fixedly connected to the outer wall of the annular mounting frame 3. The upper and lower fixing rings 41 wrap around and fix the admixture tube 4 to the outside of the annular mounting frame 3, thereby improving the stability of the admixture tube 4 and reducing the damage to the admixture tube 4 caused by collisions with external objects.

[0027] like Figures 1 to 4 As shown, a valve 61 is installed on the connecting pipe 6. The operation of injecting the admixture into the admixture pipe 4 through the connecting pipe 6 can be controlled by the valve 61.

[0028] like Figure 3 and Figure 4 As shown, valve 61 is a flow control valve. Using a flow control valve as valve 61 allows for more precise control of the amount of additive sprayed into mixer 1, achieving the purpose of controlled addition.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A high-performance concrete admixture preparation and conveying structure, comprising an annular mounting frame (3) installed between a mixer (1) and a machine cover (2), characterized in that: The annular mounting frame (3) is fixedly connected to the top of the mixer (1). An admixture pipe (4) is connected to the outside of the annular mounting frame (3). Several nozzles (5) are fixedly connected to the side of the admixture pipe (4) near the annular mounting frame (3). Several mating holes (301) are opened through the outer wall of the annular mounting frame (3). Several nozzles (5) are fixedly connected to the inner wall of several mating holes (301) and connected to the mixer (1). A connecting pipe (6) is fixedly connected to the outer wall of the admixture pipe (4).

2. The high-performance concrete admixture preparation and conveying structure according to claim 1, characterized in that: An annular scraper (7) is slidably connected to the inner side of the annular mounting frame (3), and an adjustment component (8) is connected between the annular scraper (7) and the annular mounting frame (3).

3. The high-performance concrete admixture preparation and conveying structure according to claim 2, characterized in that: The adjustment assembly (8) includes several telescopic components (81). The annular scraper (7) has several cavities (801) on its side wall near the annular mounting frame (3). The several cavities (801) are distributed circumferentially along the axis of the annular scraper (7). The several telescopic components (81) are located inside the several cavities (801). The several telescopic components (81) are all fixedly connected to the inner wall of the annular mounting frame (3). The telescopic ends of the telescopic components (81) are fixedly connected to the adjacent cavities (801).

4. The high-performance concrete admixture preparation and conveying structure according to claim 2, characterized in that: The annular scraper (7) has inclined surfaces on both the upper and lower ends away from the annular mounting frame (3).

5. The high-performance concrete admixture preparation and conveying structure according to claim 1, characterized in that: The upper and lower sides of the outer wall of the admixture tube (4) are fixedly connected with fixing rings (41), and both fixing rings (41) are fixedly connected to the outer wall of the annular mounting frame (3).

6. The high-performance concrete admixture preparation and conveying structure according to claim 1, characterized in that: A valve (61) is installed on the connecting pipe (6).

7. The high-performance concrete admixture preparation and conveying structure according to claim 6, characterized in that: The valve (61) is a flow control valve.

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