Concrete acoustic resonance batching device and particle size distribution optimization method

Abstract

The application provides a concrete sound wave resonance batching device and a particle size distribution optimization method, and belongs to the technical field of concrete production, and comprises a mixing tank, a first ultrasonic mechanism, a stirring tank, a stirring mechanism and a second ultrasonic mechanism.The mixing tank is used for mixing cement and aggregates, and the stirring tank is used for concrete stirring.The concrete sound wave resonance batching device of the embodiment first carries out ultrasonic mixing, so that different aggregates are uniformly mixed, and then stirring is carried out, and ultrasonic vibration can be carried out on different positions according to the particle size distribution of the aggregates during the stirring process, so that the particle size distribution of the aggregates in the concrete is uniform, the quality of the concrete can be effectively improved, and the concrete stirring efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of concrete production technology, specifically relating to a concrete acoustic resonance batching device and a method for optimizing particle size distribution. Background Technology

[0002] Concrete is made by mixing cement, aggregates, water, and admixtures. Aggregates, as a crucial component of concrete, directly affect its performance. Based on particle size, aggregates can be divided into coarse aggregates and fine aggregates. Coarse aggregates typically have a particle size between 5mm and 20mm and primarily fill voids in the concrete, improving its strength and stability. Fine aggregates typically have a particle size between 0.075mm and 5mm and can fill voids in the binder and mortar layers, increasing the concrete's density.

[0003] Aggregate particle size directly affects the performance of concrete. Fine aggregates can increase the workability of concrete, making the hardened concrete more compact and stable, and to some extent controlling cracking. However, excessive use of fine aggregates or prolonged exposure to heavy loads can negatively impact the durability of concrete. Coarse aggregates, on the other hand, can increase the strength and stability of concrete; appropriately increasing the use of coarse aggregates can reduce shrinkage and cracking. However, if the coarse aggregate size is inappropriate or contains too many fine particles, it will affect the quality and performance of the concrete.

[0004] In existing technologies, there are still shortcomings in the uniformity of aggregate distribution during concrete mixing, and the uneven distribution affects the quality of concrete. Summary of the Invention

[0005] The present invention aims to at least solve one of the aforementioned technical problems existing in the prior art. To this end, in a first aspect, the present invention provides a concrete acoustic resonance batching device capable of improving the uniformity of aggregates.

[0006] Secondly, the present invention provides a method for optimizing particle size distribution in the above-mentioned concrete acoustic resonance batching device.

[0007] According to a first aspect of the present invention, a concrete acoustic resonance batching device includes: A mixing tank, wherein the mixing tank is provided with a mixing chamber; A first ultrasonic mechanism is connected to the mixing tank; A mixing tank, wherein the mixing tank is provided with a mixing chamber; A stirring mechanism, comprising a stirring shaft vertically disposed within the stirring chamber and a stirring head disposed on the stirring shaft; A second ultrasonic mechanism is connected to the mixing tank. The second ultrasonic mechanism has multiple ultrasonic modules evenly arranged around the stirring shaft, and each ultrasonic module can be individually started and stopped. The mixing tank is used for mixing cement and aggregates, and the stirring tank is used for mixing concrete.

[0008] The concrete acoustic resonance batching device according to embodiments of the present invention has at least the following beneficial effects: The concrete acoustic resonance batching device of this embodiment first performs ultrasonic mixing to ensure that different aggregates are mixed evenly before stirring. During the stirring process, ultrasonic vibration is applied to different locations according to the particle size distribution of the aggregates, thereby ensuring that the particle size distribution of the aggregates in the concrete is uniform, which can effectively improve the concrete quality and concrete mixing efficiency.

[0009] According to some embodiments of the present invention, a mixing shaft is vertically arranged inside the mixing chamber, and a spiral blade is arranged circumferentially on the mixing shaft. The spiral blade extends spirally downward from the upper end of the mixing shaft and toward the side wall of the mixing chamber.

[0010] According to some embodiments of the present invention, a first discharge port is provided at the bottom of the mixing tank, the first discharge port is connected to a discharge channel defined by a flexible structure, and the end of the discharge channel extends to the mixing tank.

[0011] According to some embodiments of the present invention, the stirring head has a conical structure in the vertical direction, and the stirring head is provided with a plurality of stirring levers spirally diverging from top to bottom.

[0012] According to some embodiments of the present invention, the lower end of the stirring lever is provided with a secondary fork, which extends toward the stirring shaft in an attitude close to the bottom of the stirring chamber.

[0013] According to some embodiments of the present invention, a second discharge port is provided at the bottom of the mixing tank, and the ultrasonic module is distributed with the second discharge port at an angular offset.

[0014] According to some embodiments of the present invention, the mixing tank is provided with shock-absorbing support legs.

[0015] According to some embodiments of the present invention, a vision sensor is disposed above the stirring chamber.

[0016] According to a second aspect of the present invention, the particle size distribution optimization method is applied to the above-mentioned concrete acoustic resonance batching device, comprising: first mixing aggregates, performing ultrasonic vibration during the mixing process, adding water and stirring after the mixture is uniform, and performing ultrasonic vibration during the stirring process.

[0017] According to some embodiments of the present invention, during the stirring process, the ultrasonic modules are controlled to vibrate at different frequencies according to the particle size distribution.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and some of these additional aspects and advantages will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of an operation process according to the present invention; Figure 2 This is a schematic diagram of an overall structure of the present invention; Figure 3 This is a top view of the mixing tank in this invention. Figure 4 This is a schematic diagram of one structure of the stirring mechanism in this invention. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0024] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] Concrete is made by mixing cement, aggregates, water, and admixtures. Aggregates, as a crucial component of concrete, directly affect its performance. Based on particle size, aggregates can be divided into coarse aggregates and fine aggregates. Coarse aggregates typically have a particle size between 5mm and 20mm and primarily fill voids in the concrete, improving its strength and stability. Fine aggregates typically have a particle size between 0.075mm and 5mm and can fill voids in the binder and mortar layers, increasing the concrete's density.

[0026] Aggregate particle size directly affects the performance of concrete. Fine aggregates can increase the workability of concrete, making the hardened concrete more compact and stable, and to some extent controlling cracking. However, excessive use of fine aggregates or prolonged exposure to heavy loads can negatively impact the durability of concrete. Coarse aggregates, on the other hand, can increase the strength and stability of concrete; appropriately increasing the use of coarse aggregates can reduce shrinkage and cracking. However, if the coarse aggregate size is inappropriate or contains too many fine particles, it will affect the quality and performance of the concrete.

[0027] In existing technologies, there are still shortcomings in the uniformity of aggregate distribution during concrete mixing, and the uneven distribution affects the quality of concrete.

[0028] In response, the present invention provides a concrete acoustic resonance batching device that can improve the uniformity of aggregates.

[0029] Specifically, refer to Figures 2 to 4 The concrete acoustic resonance batching device of this embodiment includes: Mixing tank 100, the mixing tank 100 is provided with mixing chamber 101; The first ultrasonic mechanism 104 is connected to the mixing tank 100. A mixing tank 200 is provided with a mixing chamber 201; The stirring mechanism includes a stirring shaft 202 vertically disposed within the stirring chamber 201 and a stirring head disposed on the stirring shaft 202; The second ultrasonic mechanism 204 is connected to the mixing tank 200. Multiple ultrasonic modules are evenly arranged around the stirring shaft 202 of the second ultrasonic mechanism 204, and each ultrasonic module can be started and stopped independently. The mixing tank 100 is used for mixing cement and aggregates, and the mixing tank 200 is used for mixing concrete.

[0030] It is understood that the concrete acoustic resonance batching device of this embodiment first performs ultrasonic mixing to ensure that different aggregates are mixed evenly before stirring. During the stirring process, ultrasonic vibration can be applied to different locations according to the particle size distribution of the aggregates, thereby ensuring that the particle size distribution of the aggregates in the concrete is uniform, which can effectively improve the concrete quality and concrete mixing efficiency.

[0031] In some embodiments of the present invention, a mixing shaft 102 is vertically arranged inside the mixing chamber 101, and a spiral blade 103 is arranged circumferentially on the mixing shaft 102. The spiral blade 103 extends spirally downward from the upper end of the mixing shaft 102 and toward the side wall of the mixing chamber 101.

[0032] When the mixing shaft 102 rotates, the spiral blades 103 will rotate accordingly. Since the spiral blades 103 spread out from top to bottom and away from the mixing shaft 102, they can effectively agitate the aggregate and cement in the mixing chamber 101, making them evenly mixed.

[0033] Preferably, the lower end of the spiral blade 103 is close to the side wall of the mixing chamber 101 to ensure that the material in the entire mixing chamber 101 is stirred.

[0034] During the mixing process, the spiral blades 103 push the material up and down, allowing the material to pass over the spiral blades 103, resulting in thorough mixing and improved material mixing efficiency.

[0035] Furthermore, due to the conical design of the spiral blades 103, the aggregates and cement will not accumulate when poured into the mixing chamber 101 and can be effectively dispersed.

[0036] The mixing shaft 102 can be driven by a motor, so it will not be described in detail here.

[0037] In some embodiments of the present invention, a first discharge port is provided at the bottom of the mixing tank 100, the first discharge port is connected to a discharge channel defined by a flexible structure, and the end of the discharge channel extends to the mixing tank 200.

[0038] Since the mixing tank 100 mixes aggregates and cement, the materials are in a dry state and prone to dust generation. This embodiment uses a flexible structure to define the discharge channel for material transfer, which can effectively suppress dust generation. Furthermore, since the aggregates and cement are already uniformly mixed after mixing, other conveying methods would inevitably affect the mixing effect. This embodiment uses gravity to directly discharge the material, which can effectively ensure uniformity.

[0039] Reference Figure 4 In some embodiments of the present invention, the stirring head is conical in the vertical direction, and multiple stirring levers 203 are spirally arranged from top to bottom on the stirring head.

[0040] Similarly, in this embodiment, the stirring head is set as a conical structure, which can not only fully stir the material at the bottom, but also prevent material from accumulating at the top.

[0041] Reference Figure 4 In some embodiments of the present invention, the lower end of the stirring lever 203 is provided with a secondary fork 207, which extends toward the stirring shaft 202 in a posture close to the bottom of the stirring chamber 201.

[0042] Because the mixing lever 203 has a tapered, diverging design, there is a large gap between its lower end and the mixing shaft 202. In this embodiment, by providing a secondary fork 207 at the lower end of the mixing lever 203, the corresponding area in this space can be effectively mixed, ensuring the mixing effect of the concrete.

[0043] The specific structure of the secondary shift fork 207 can be flexibly set according to needs, and no specific limitation is made here.

[0044] Reference Figure 3 In some embodiments of the present invention, a second discharge port 206 is provided at the bottom of the mixing tank 200, and the ultrasonic module is distributed with the second discharge port 206 in an angularly offset manner.

[0045] By distributing them in an angularly staggered manner, the impact of concrete on the ultrasonic module can be avoided, which helps to extend its service life.

[0046] In some embodiments of the present invention, the mixing tank 200 is provided with shock-absorbing support legs 205.

[0047] Since the mixing tank 200 is equipped with a second ultrasonic mechanism 204, the vibration damping support leg 205 can effectively reduce the vibration of the mixing tank 200 to the ground. The vibration damping support leg 205 can use rubber pads for vibration damping, or it can use other known structures for vibration damping.

[0048] In some embodiments of the present invention, a vision sensor is disposed above the stirring chamber 201. This vision sensor can be jointly controlled with the second ultrasonic mechanism 204. For example, after stirring for a certain period, stirring is stopped, the vision sensor takes a picture to determine the particle size distribution, and then the ultrasonic module corresponding to the uneven particle size distribution is activated to assist stirring. The ultrasonic vibration is then turned off after a certain duration, and stirring is restarted.

[0049] Combination Figure 1 The embodiments of the present invention also propose a particle size distribution optimization method, which is applied to the above-mentioned concrete acoustic resonance batching device, including: first mixing the aggregate, performing ultrasonic vibration during the mixing process, adding water after the mixture is uniform and stirring, and also performing ultrasonic vibration during the stirring process.

[0050] During the stirring process, the vibration of different ultrasonic modules is controlled according to the particle size distribution, or the ultrasonic modules are controlled to vibrate at different frequencies.

[0051] Specifically, first, aggregates, cement and other solid and powder materials are added to the mixing tank 100, and the stirring is carried out by the spiral blade 103 for a set time. Then the stirring is stopped, and then the first ultrasonic mechanism 104 is started for a set time. After stirring for a set time again, the mixed materials are discharged into the mixing tank 200. Afterwards, add an appropriate amount of water, start the mixing mechanism and set the time, then start the second ultrasonic mechanism 204 and set the time, then mix again and set the time, and then make a judgment. Visually judge whether the aggregate particle size distribution around the mixing shaft 202 is uniform and whether the mixing is thorough. When it is obvious that the aggregate particle size is more concentrated in a certain place than in other places, or that it is not fully mixed with cement paste, start the closest ultrasonic module and set the time, then mix again and set the time, and make a judgment again, until the aggregate particle size is no longer obviously uneven and no cement paste is found on the surface of the aggregate, then the concrete mixing is completed.

[0052] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A concrete acoustic resonance batching device, characterized in that, include: A mixing tank, wherein the mixing tank is provided with a mixing chamber; A first ultrasonic mechanism is connected to the mixing tank; A mixing tank, wherein the mixing tank is provided with a mixing chamber; A stirring mechanism, comprising a stirring shaft vertically disposed within the stirring chamber and a stirring head disposed on the stirring shaft; A second ultrasonic mechanism is connected to the mixing tank. The second ultrasonic mechanism has multiple ultrasonic modules evenly arranged around the stirring shaft, and each ultrasonic module can be individually started and stopped. The mixing tank is used for mixing cement and aggregates, and the mixing tank is used for mixing concrete. A vision sensor is installed above the stirring chamber. The vision sensor and the second ultrasonic mechanism jointly control the stirring process: stirring stops after a set time, the vision sensor takes a picture to determine the particle size distribution, the ultrasonic module at the corresponding position of uneven particle size distribution is activated to assist stirring, the ultrasonic module vibrates for a set time and then shuts off, and stirring is restarted.

2. The concrete acoustic resonance batching device according to claim 1, characterized in that, A mixing shaft is vertically arranged inside the mixing chamber, and spiral blades are arranged around the mixing shaft. The spiral blades extend spirally downward from the upper end of the mixing shaft and toward the side wall of the mixing chamber.

3. The concrete acoustic resonance batching device according to claim 2, characterized in that, The bottom of the mixing tank is provided with a first discharge port, which is connected to a discharge channel defined by a flexible structure, and the end of the discharge channel extends to the mixing tank.

4. The concrete acoustic resonance batching device according to claim 1, characterized in that, The stirring head has a conical structure in the vertical direction, and multiple stirring levers are spirally arranged from top to bottom on the stirring head.

5. The concrete acoustic resonance batching device according to claim 4, characterized in that, The lower end of the stirring lever is provided with a secondary fork, which extends toward the stirring shaft in a posture close to the bottom of the stirring chamber.

6. The concrete acoustic resonance batching device according to claim 1, characterized in that, The bottom of the mixing tank is provided with a second discharge port, and the ultrasonic module is distributed with the second discharge port at an angle offset.

7. The concrete acoustic resonance batching device according to claim 1, characterized in that, The mixing tank is equipped with shock-absorbing support legs.

8. A method for optimizing particle size distribution in the concrete acoustic resonance batching device according to claim 1, characterized in that, include: Add aggregate and cement to the mixing tank, stir for a set time and then stop stirring. Start the first ultrasonic mechanism for a set time, then stir for a set time again, and then discharge the mixed material into the mixing tank. Add water to the mixing tank, start the stirring mechanism for a set time, start the second ultrasonic mechanism for a set time, and then stir again for a set time. The visual sensor determines whether the aggregate particle size distribution around the stirring shaft is uniform. When the aggregate particle size is more concentrated than in other locations, the nearest ultrasonic module is activated for a set duration. Then, the stirring is repeated for a set duration and the determination is repeated until the aggregate particle size distribution is uniform.

9. The particle size distribution optimization method according to claim 8, characterized in that, During the stirring process, the ultrasonic modules are controlled to vibrate at different frequencies according to the particle size distribution.

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