A concrete fiber dispersing device

Abstract

The utility model relates to a kind of concrete fiber dispersion devices, it includes dispersion tank, first rotary drive mechanism and second rotary drive mechanism being arranged on the dispersion tank, inner screen cylinder being arranged at the rotating end of the first rotary drive mechanism, outer screen cylinder being arranged at the rotating end of the second rotary drive mechanism and being gaply set in the outer of the inner screen cylinder, and conveying auger being arranged at the discharge port of the dispersion tank, the opening of the inner screen cylinder and outer screen cylinder is respectively arranged towards the feed inlet of the dispersion tank, and the inner portion of the dispersion tank is separated into three dispersion cavities of sequentially set in. The utility model has the advantages of reducing the stirring inertia of dispersion, improving the dispersion effect of plastic fiber.

Description

Technical Field

[0001] This utility model relates to the technical field of fiber-reinforced concrete manufacturing, and in particular to a concrete fiber dispersion device. Background Technology

[0002] Synthetic fibers used in concrete are typically short-cut monofilament fibers made of materials such as polyethylene plastic, and their dosage in concrete is generally 0.05% to 0.3%. By forming a three-dimensional network structure through transverse distribution within the concrete, plastic fibers can inhibit the formation and development of micro-cracks, reducing the number and size of cracks and giving concrete crack resistance and impermeability. For example, adding 0.1% polypropylene fiber can reduce crack width by more than 50%. Furthermore, plastic fibers are lightweight and corrosion-resistant, making them significantly advantageous for use in harsh environments such as coastal areas or chemical plants.

[0003] However, due to their light weight and high surface energy, plastic fibers are prone to agglomeration during mixing with concrete matrices, leading to problems such as uneven fiber dispersion and insufficient adhesion to the cement matrix in current applications. Although existing technologies have attempted to pre-dispersettle plastic fibers to improve their dispersion effect, the uniformity and stability of fiber dispersion still need improvement in practical applications. The methods for improving fiber dispersion still have some shortcomings, limiting the full realization of the advantages of plastic fibers in concrete. Therefore, how to further optimize the pre-dispersion treatment device for plastic fibers and effectively solve the problems of uneven dispersion and insufficient adhesion to the matrix has become an urgent technical problem to be solved in this field. Utility Model Content

[0004] The present invention aims to address the aforementioned shortcomings in the prior art by providing a concrete fiber dispersion device that reduces the stirring inertia during dispersion and improves the dispersion effect of plastic fibers.

[0005] The above-mentioned objective of this utility model is achieved through the following technical solution: A concrete fiber dispersion device includes a dispersion tank, a first rotary drive mechanism and a second rotary drive mechanism disposed on the dispersion tank, an inner screen cylinder disposed at the rotating end of the first rotary drive mechanism, an outer screen cylinder disposed at the rotating end of the second rotary drive mechanism and spaced outside the inner screen cylinder, and a conveying auger disposed at the discharge port of the dispersion tank. The openings of the inner screen cylinder and the outer screen cylinder are respectively arranged facing the feed port of the dispersion tank, and the interior of the dispersion tank is divided into three sequentially nested dispersion cavities.

[0006] By adopting the above technical solution, when plastic fibers are fed into the dispersion tank through the inlet, they will sequentially enter the three dispersion cavities formed by the inner screen cylinder, the outer screen cylinder, and the inner wall of the dispersion tank. At this time, the first rotary drive mechanism drives the inner screen cylinder to rotate, and the second rotary drive mechanism drives the outer screen cylinder to rotate. The rotation direction and speed of the two can be different, which can produce a more complex and diverse stirring effect and effectively reduce the stirring inertia of dispersion. During the rotation of the inner and outer screen cylinders, the plastic fibers will be subjected to different stirring and shearing forces in different dispersion cavities, so that the fibers can be more fully dispersed and avoid agglomeration, thereby improving the dispersion effect of plastic fibers. The conveying auger set at the outlet of the dispersion tank can smoothly transport the evenly dispersed plastic fibers out for subsequent mixing with the concrete matrix and other operations.

[0007] The present invention is further configured such that the discharge port of the dispersion tank is a tapered opening.

[0008] By adopting the above technical solution, the uniformly dispersed plastic fibers can be more concentrated during the transportation process, avoiding fiber scattering and waste during transportation, and further improving the fiber transportation efficiency.

[0009] The present invention is further configured such that the rotation directions of the first rotary drive mechanism and the second rotary drive mechanism are opposite.

[0010] By adopting the above technical solution, the stirring and shearing effects on plastic fibers can be further enhanced, allowing the plastic fibers to be more fully dispersed in the dispersion tank, and significantly improving the dispersion quality and efficiency of plastic fibers.

[0011] The present invention is further configured such that: the first rotary drive mechanism includes a first rotary motor disposed on the dispersion tank, a first gear disposed on the output shaft of the first rotary motor, and a first gear ring rotatably connected to the dispersion tank and meshing with the first gear, and the inner sieve cylinder is disposed on the first gear ring.

[0012] By adopting the above technical solution, after the first rotary motor starts, it can drive the first gear ring to rotate through the first gear, and then drive the inner screen cylinder set on the first gear ring to rotate. This transmission method has a simple and stable structure, which can ensure the stability of the inner screen cylinder during rotation, thereby realizing the effective stirring and shearing effect of the inner screen cylinder on the plastic fiber, which helps to improve the dispersion effect of the plastic fiber.

[0013] The present invention is further configured such that: the second rotary drive mechanism includes a second rotary motor disposed on the dispersion tank, a second gear disposed on the output shaft of the second rotary motor, and a second gear ring rotatably connected to the dispersion tank and meshing with the second gear, and the outer sieve cylinder is disposed on the second gear ring.

[0014] By adopting the above technical solution, after the second rotary motor is started, it can drive the second gear ring to rotate through the second gear, thereby driving the outer screen cylinder set on the second gear ring to rotate. This transmission method is similar to the first rotary drive mechanism, and also has the advantages of simple structure and stability, which can ensure the stability of the outer screen cylinder during rotation.

[0015] The present invention is further provided with a baffle at the bottom of the inner screen cylinder.

[0016] By adopting the above technical solution, the baffle can change the movement trajectory of plastic fibers during the stirring and shearing process, so that the plastic fibers can be in more complete contact in the inner screen cylinder, further enhancing the dispersion effect of plastic fibers.

[0017] The present invention is further configured such that the surface of the baffle is provided with a plurality of protrusions.

[0018] By adopting the above technical solution, the multiple protrusions on the surface of the baffle can further interfere with the movement direction of the plastic fibers during the mixing and shearing process, increase the probability of collision and friction between the plastic fibers, and make the plastic fibers disperse more evenly in the inner screen cylinder, thereby more effectively improving the dispersion effect of the plastic fibers and improving the working performance of the entire concrete fiber dispersion device.

[0019] The present invention is further configured such that: at least two conveying augers are provided and are evenly distributed around the circumference of the discharge port of the dispersion tank.

[0020] By adopting the above technical solution, these conveying augers can work simultaneously during discharge, conveying the dispersed concrete fibers evenly and quickly from different directions. This avoids the problems of uneven conveying and low efficiency that may occur with a single conveying auger, greatly improving the efficiency and quality of discharge, and ensuring the stability and efficiency of the entire concrete fiber dispersion device in the discharge stage.

[0021] In summary, the beneficial technical effects of this utility model are as follows: This concrete fiber dispersion device, through its unique structural design and working method, successfully solves the problems of uneven dispersion of plastic fibers and insufficient adhesion to the cement matrix in existing technologies. Its three sequentially nested dispersion cavities, combined with the adjustable rotation direction and speed of the inner and outer screen cylinders, achieve multi-stage and efficient dispersion of the plastic fibers. This dispersion method not only improves the uniformity of fiber dispersion but also enhances the adhesion between the fibers and the concrete matrix, thereby fully leveraging the performance advantages of plastic fibers in concrete. Furthermore, the device has a simple structure, is easy to operate, and possesses high practicality and promotional value, making it significant for promoting the development of fiber-reinforced concrete technology. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the concrete fiber dispersion device of this utility model.

[0023] Figure 2 This is a schematic diagram showing the connection relationship between the dispersion tank, inner sieve cylinder, and outer sieve cylinder of this utility model.

[0024] Figure 3 This is a schematic diagram showing the connection relationship between the inner screen cylinder, outer screen cylinder, first rotary drive mechanism, and second rotary drive mechanism of this utility model.

[0025] In the figure, 1 is a dispersion tank; 2 is a first rotary drive mechanism; 21 is a first rotary motor; 22 is a first gear; 23 is a first gear ring; 3 is a second rotary drive mechanism; 31 is a second rotary motor; 32 is a second gear; 33 is a second gear ring; 4 is an inner screen cylinder; 41 is a baffle; 42 is a protrusion; 5 is an outer screen cylinder; and 6 is a conveying auger. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Reference Figure 1 and Figure 2This utility model discloses a concrete fiber dispersion device, comprising a dispersion tank 1, a first rotary drive mechanism 2 and a second rotary drive mechanism 3 disposed on the dispersion tank 1, an inner screen cylinder 4 disposed at the rotating end of the first rotary drive mechanism 2, an outer screen cylinder 5 disposed at the rotating end of the second rotary drive mechanism 3 and spaced outside the inner screen cylinder 4, and two conveying augers 6 evenly distributed circumferentially at the discharge port of the dispersion tank 1. The discharge port of the dispersion tank 1 is a tapered opening. The first rotary drive mechanism 2 and the second rotary drive mechanism 3 rotate in opposite directions. The openings of the inner screen cylinder 4 and the outer screen cylinder 5 are respectively arranged facing the inlet of the dispersion tank 1, dividing the interior of the dispersion tank 1 into three sequentially nested dispersion cavities.

[0028] When plastic fibers are fed into the dispersion tank 1 through the inlet, they sequentially enter the three dispersion cavities formed by the inner screen cylinder 4, the outer screen cylinder 5, and the inner wall of the dispersion tank 1. At this time, the first rotary drive mechanism 2 drives the inner screen cylinder 4 to rotate, and the second rotary drive mechanism 3 drives the outer screen cylinder 5 to rotate. The rotation direction and speed of the two can be different, which can produce a more complex and diverse stirring effect and effectively reduce the stirring inertia of dispersion. During the rotation of the inner screen cylinder 4 and the outer screen cylinder 5, the plastic fibers will be subjected to different stirring and shearing forces in different dispersion cavities, so that the fibers can be more fully dispersed and avoid agglomeration, thereby improving the dispersion effect of the plastic fibers. The conveying auger 6 set at the outlet of the dispersion tank 1 can smoothly transport the evenly dispersed plastic fibers out for subsequent mixing with the concrete matrix and other operations.

[0029] Furthermore, the tapered discharge port allows the evenly dispersed plastic fibers to concentrate more during transport, preventing fiber scattering and waste, and further improving fiber transport efficiency. During discharge, these conveying augers 6 can operate simultaneously, uniformly and rapidly transporting the dispersed concrete fibers from different directions. This avoids the uneven transport and low efficiency problems that can occur with a single conveying auger 6, greatly improving discharge efficiency and quality, and ensuring the stability and efficiency of the entire concrete fiber dispersion device in the discharge stage.

[0030] Reference Figure 2The bottom of the inner screen cylinder 4 is equipped with a baffle 41, and the surface of the baffle 41 is provided with multiple protrusions 42. The baffle 41 can change the movement trajectory of the plastic fibers during the mixing and shearing process, so that the plastic fibers can make more full contact within the inner screen cylinder 4, further enhancing the dispersion effect of the plastic fibers. The multiple protrusions 42 on the surface of the baffle 41 can further interfere with the movement direction of the plastic fibers during the mixing and shearing process, increasing the probability of collision and friction between the plastic fibers, making the plastic fibers more uniformly dispersed within the inner screen cylinder 4, thereby more effectively improving the dispersion effect of the plastic fibers and enhancing the overall performance of the concrete fiber dispersion device.

[0031] Reference Figure 3 The first rotary drive mechanism 2 includes a first rotary motor 21 mounted on the dispersion tank 1, a first gear 22 mounted on the output shaft of the first rotary motor 21, and a first gear ring 23 rotatably connected to the dispersion tank 1 and meshing with the first gear 22. The inner screen cylinder 4 is mounted on the first gear ring 23. After the first rotary motor 21 is started, it can drive the first gear ring 23 to rotate through the first gear 22, thereby driving the inner screen cylinder 4 mounted on the first gear ring 23 to rotate. This transmission method is simple and stable, ensuring the stability of the inner screen cylinder 4 during rotation, thus achieving effective stirring and shearing of the plastic fibers by the inner screen cylinder 4, which helps to improve the dispersion effect of the plastic fibers.

[0032] The second rotary drive mechanism 3 includes a second rotary motor 31 mounted on the dispersion tank 1, a second gear 32 mounted on the output shaft of the second rotary motor 31, and a second gear ring 33 rotatably connected to the dispersion tank 1 and meshing with the second gear 32. The outer screen cylinder 5 is mounted on the second gear ring 33. After the second rotary motor 31 is started, it can drive the second gear ring 33 to rotate through the second gear 32, thereby driving the outer screen cylinder 5 mounted on the second gear ring 33 to rotate. This transmission method is similar to that of the first rotary drive mechanism 2, and also has the advantages of simple structure and stability, which can ensure the smoothness of the outer screen cylinder 5 during rotation.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A concrete fiber dispersion device, characterized in that: The system includes a dispersion tank (1), a first rotary drive mechanism (2) and a second rotary drive mechanism (3) disposed on the dispersion tank (1), an inner screen cylinder (4) disposed at the rotating end of the first rotary drive mechanism (2), an outer screen cylinder (5) disposed at the rotating end of the second rotary drive mechanism (3) and spaced outside the inner screen cylinder (4), and a conveying auger (6) disposed at the outlet of the dispersion tank (1). The openings of the inner screen cylinder (4) and the outer screen cylinder (5) are respectively arranged facing the inlet of the dispersion tank (1) and divide the interior of the dispersion tank (1) into three sequentially nested dispersion cavities.

2. The concrete fiber dispersion device according to claim 1, characterized in that: The discharge port of the dispersion tank (1) is configured as a tapered port.

3. The concrete fiber dispersion device according to claim 1, characterized in that: The first rotary drive mechanism (2) and the second rotary drive mechanism (3) rotate in opposite directions.

4. A concrete fiber dispersion device according to claim 3, characterized in that: The first rotary drive mechanism (2) includes a first rotary motor (21) disposed on the dispersion tank (1), a first gear (22) disposed on the output shaft of the first rotary motor (21), and a first gear ring (23) rotatably connected to the dispersion tank (1) and meshing with the first gear (22). The inner screen cylinder (4) is disposed on the first gear ring (23).

5. A concrete fiber dispersion device according to claim 3, characterized in that: The second rotary drive mechanism (3) includes a second rotary motor (31) disposed on the dispersion tank (1), a second gear (32) disposed on the output shaft of the second rotary motor (31), and a second gear ring (33) rotatably connected to the dispersion tank (1) and meshing with the second gear (32), and the outer screen cylinder (5) is disposed on the second gear ring (33).

6. A concrete fiber dispersion device according to claim 1, characterized in that: The bottom of the inner screen cylinder (4) is provided with a baffle (41).

7. A concrete fiber dispersion device according to claim 6, characterized in that: The surface of the baffle (41) is provided with a plurality of protrusions (42).

8. A concrete fiber dispersion device according to claim 1, characterized in that: At least two conveying augers (6) are provided and are evenly distributed around the outlet of the dispersion tank (1).

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