Efficient concrete mixer

Abstract

The utility model discloses an efficient concrete mixer which comprises a mixing tank body, a discharging valve is arranged on the lower portion of the mixing tank body, a top cover is arranged on the upper portion of the mixing tank body, a double-shaft mixing unit is arranged on the top cover, and the double-shaft mixing unit comprises two motors penetrating through the top cover. The output end of the motor is fixedly connected with a stirring shaft arranged in the stirring tank body, the rotating directions of the two groups of stirring shafts are opposite, one group of stirring shafts is fixedly connected with a stirring blade I, and the other group of stirring shafts is fixedly connected with a stirring blade II. The utility model belongs to the technical field of concrete mixing devices, and effectively solves the problems that the mixing efficiency is low and the energy consumption is increased due to single-shaft mixing of a concrete mixer.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete mixing equipment, specifically referring to a high-efficiency concrete mixer. Background Technology

[0002] Concrete is a general term for composite materials made by mixing cementitious materials, aggregates, and water in appropriate proportions and then allowing them to harden over a certain period of time. It is the most widely used type of artificial material in the world. In construction projects, concrete mixers are frequently used to mix concrete.

[0003] In the mixing process of materials such as mortar and concrete, single-shaft mixing is usually used. Single-shaft mixing relies on a single rotation direction, resulting in a single material flow pattern, slow mixing speed, and the need to extend the mixing time to achieve uniformity, leading to high energy consumption. Single-shaft mixing has limited shear force for high-viscosity materials, such as polymer-modified mortar or fiber-reinforced materials, making it difficult to effectively break up agglomerates. Uneven fiber distribution affects crack resistance and product quality. In addition, the presence of additives, such as water-reducing agents, can affect the setting speed if not accurately added. Utility Model Content

[0004] The technical problem this invention aims to solve is that concrete mixers use a single shaft for mixing, resulting in low mixing efficiency and increased energy consumption.

[0005] The technical solution adopted by this utility model is as follows:

[0006] This utility model proposes a high-efficiency concrete mixer, including a mixing tank body. The mixing tank body is provided with a discharge valve at the bottom and a top cover at the top. The top cover is provided with a dual-shaft mixing unit. The dual-shaft mixing unit includes two sets of motors that pass through the top cover. The output end of each motor is fixedly connected to a mixing shaft disposed inside the mixing tank body. The two sets of mixing shafts rotate in opposite directions. One set of mixing shafts is fixedly connected to a mixing blade, and the other set of mixing shafts is fixedly connected to a mixing blade.

[0007] Furthermore, the first stirring blade and the second stirring blade are arranged in an alternating vertical arrangement.

[0008] Furthermore, the mixing tank body is provided with a feed opening and an additive addition chamber located on both sides of the motor. The upper part of the additive addition chamber is connected to a solenoid valve, and the upper part of the solenoid valve is connected to a dilution chamber.

[0009] Furthermore, a water-reducing agent storage container is provided above the dilution chamber, and a replenishment port is provided on the upper part of the water-reducing agent storage container. Support frames fixed to the upper part of the top cover are provided on both sides of the water-reducing agent storage container.

[0010] Furthermore, the water-reducing agent storage container is connected to the dilution chamber via a metering pump, and the dilution chamber is equipped with a dilution water inlet pipe.

[0011] Furthermore, a controller is fixedly attached to the outer wall of the additive addition chamber, and the controller is electrically connected to the solenoid valve.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1. It adopts a dual-shaft mixing unit, with the two mixing shafts rotating in opposite directions, generating stronger shear force, which is suitable for high viscosity or fiber-reinforced mortar; the material forms convection between the shafts, reducing dead corners and making the mixing more uniform.

[0014] 2. By staggering the mixing blades on different mixing shafts, the mixing areas of the two shafts partially overlap, forming a more complex material flow path, improving the uniformity of the distribution of each component of the concrete, and the staggered layout shortens the circulation cycle of the material in the mixing drum and speeds up the mixing speed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0017] Figure 3 This is a reference diagram showing the operating status of the metering pump;

[0018] Figure 4 This is a schematic diagram showing the structural installation of stirring blade one and stirring blade two inside the mixing tank body.

[0019] The components include: 1. Mixing tank body; 11. Discharge valve; 12. Top cover; 13. Motor; 14. Mixing shaft; 15. Mixing blade one; 16. Mixing blade two; 2. Feed inlet; 21. Additive addition chamber; 3. Solenoid valve; 31. Dilution chamber; 4. Water-reducing agent storage container; 41. Replenishment port; 5. Metering pump; 51. Dilution water addition pipe; 52. Controller. Detailed Implementation

[0020] like Figure 1 , Figure 4As shown, the present invention proposes a high-efficiency concrete mixer, including a mixing tank body 1. The mixing tank body 1 is provided with a discharge valve 11 at the lower part and a top cover 12 at the upper part. A dual-shaft mixing unit is provided on the top cover 12. The dual-shaft mixing unit includes two sets of motors 13 that pass through the top cover 12. A mixing shaft 14 disposed inside the mixing tank body 1 is fixedly connected to the output end of the motor 13. The two sets of mixing shafts 14 rotate in opposite directions. A first mixing blade 15 is fixedly connected to one set of mixing shafts 14, and a second mixing blade 16 is fixedly connected to the other set of mixing shafts 14. The first mixing blade 15 and the second mixing blade 16 are arranged in an alternating manner.

[0021] In practical use, the two sets of motors 13 drive the stirring shaft 14 to rotate in opposite directions, driving the stirring blade 15 and stirring blade 2 16 to stir, generating stronger shear force. The material forms convection between the shafts, reducing dead zones and making the mixing more uniform. The staggered blades can avoid the instantaneous load peak caused by the synchronous collision of the two shaft blades with the material, making the torque distribution more stable and reducing the energy consumption of the motor 13. Data support: Experiments show that the staggered design can save about 8% to 12% more energy than the symmetrical design.

[0022] like Figure 1 , 2 As shown in Figure 3, the mixing tank body 1 is provided with a feed opening 2 on both sides of the motor 13 and an additive addition chamber 21. The additive addition chamber 21 is connected to a solenoid valve 3 at the top, and the solenoid valve 3 is connected to a dilution chamber 31 at the top. A water-reducing agent storage container 4 is provided above the dilution chamber 31. The water-reducing agent storage container 4 is provided with a replenishment port 41 at the top. Both sides of the water-reducing agent storage container 4 are provided with support frames fixed to the top of the top cover 12. The water-reducing agent storage container 4 is connected to the dilution chamber 31 through a metering pump 5. A dilution water addition pipe 51 is provided on the dilution chamber 31.

[0023] When in use, water is added from the dilution water pipe 51 into the dilution chamber 31, and then diluted and mixed with the water-reducing agent added to the dilution chamber 31 by the metering pump 5. Finally, the solenoid valve 3 is opened to allow the diluted water-reducing agent to be added from the additive addition chamber 21 into the mixing tank body 1, thereby improving the mixing efficiency.

[0024] A controller 52 is fixedly connected to the outer wall of the additive addition chamber 21. The controller 52 is electrically connected to the solenoid valve 3, and the solenoid valve 3 can be controlled by the controller 52.

[0025] The above is the entire usage process of a high-efficiency concrete mixer.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0027] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A high-efficiency concrete mixer, comprising a mixing tank body (1), wherein a discharge valve (11) is provided at the lower part of the mixing tank body (1), characterized in that: The mixing tank body (1) is provided with a top cover (12) on the upper part. The top cover (12) is provided with a dual-shaft mixing unit. The dual-shaft mixing unit includes two sets of motors (13) that pass through the top cover (12). The output end of the motors (13) is fixedly connected to a mixing shaft (14) that is located inside the mixing tank body (1). The two sets of mixing shafts (14) rotate in opposite directions. One set of mixing shafts (14) is fixedly connected to a mixing blade (15), and the other set of mixing shafts (14) is fixedly connected to a mixing blade (2) (16).

2. The high-efficiency concrete mixer according to claim 1, characterized in that: The first stirring blade (15) and the second stirring blade (16) are arranged in an alternating pattern.

3. The high-efficiency concrete mixer according to claim 1, characterized in that: The mixing tank body (1) is provided with a feed opening (2) on both sides of the motor (13) and an additive addition chamber (21). The upper part of the additive addition chamber (21) is connected to a solenoid valve (3), and the upper part of the solenoid valve (3) is connected to a dilution chamber (31).

4. The high-efficiency concrete mixer according to claim 3, characterized in that: A water-reducing agent storage container (4) is provided above the dilution chamber (31). A replenishment port (41) is provided on the upper part of the water-reducing agent storage container (4). Support frames fixed to the upper part of the top cover (12) are provided on both sides of the water-reducing agent storage container (4).

5. A high-efficiency concrete mixer according to claim 4, characterized in that: The water-reducing agent storage container (4) is connected to the dilution chamber (31) via a metering pump (5), and the dilution chamber (31) is equipped with a dilution water addition pipe (51).

6. A high-efficiency concrete mixer according to claim 3, characterized in that: A controller (52) is fixedly attached to the outer wall of the additive addition chamber (21), and the controller (52) is electrically connected to the solenoid valve (3).

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