Concrete acoustic resonance batching device and particle size distribution optimization method

Abstract

The invention provides a concrete acoustic resonance batching device and a particle size distribution optimization method, and belongs to the technical field of concrete production, the concrete acoustic resonance batching device 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 aggregate, and the stirring tank is used for stirring concrete. According to the concrete acoustic resonance batching device, ultrasonic mixing is conducted firstly, so that different aggregates are evenly mixed firstly, then stirring is conducted, ultrasonic vibration can be conducted on different positions according to the particle size distribution condition of the aggregates in the stirring process, and therefore it is guaranteed that the particle size distribution of the aggregates in concrete is even; the concrete quality and the concrete stirring efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete production, and particularly relates to a concrete acoustic resonance batching device and a particle size distribution optimization method. Background Art

[0002] Concrete is made by mixing materials such as cement, aggregates, water and admixtures. As one of the important components in concrete, aggregates directly affect the performance of concrete. According to different particle sizes, aggregates can be divided into two types: coarse aggregates and fine aggregates. Among them, the particle size of coarse aggregates generally ranges from 5mm to 20mm, mainly filling the voids in concrete and improving the strength and stability of concrete; the particle size of fine aggregates generally ranges from 0.075mm to 5mm, which can fill the voids in the bonding material and ash layer, increasing the compactness of concrete.

[0003] The particle size of aggregates has a direct impact on the performance of concrete. Fine aggregates can improve the workability of concrete, make the hardened concrete more compact and stable, and control the cracking of concrete to a certain extent. However, when too much fine aggregate is used or under the action of a long-term large load, it will have an adverse impact on the durability of concrete. Coarse aggregates can increase the strength and stability of concrete. Appropriately increasing the use of coarse aggregates can reduce the shrinkage and cracking of concrete. However, if the size of the coarse aggregates is inappropriate or contains too many fine particles, it will affect the quality and performance of concrete.

[0004] In the related prior art, there are still deficiencies in the uniformity of aggregate distribution during the concrete mixing process, and the distribution uniformity is not ideal, affecting the quality of concrete. Summary of the Invention

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

[0006] In a second aspect, the present invention provides a particle size distribution optimization method applied to the above concrete acoustic resonance batching device.

[0007] According to the concrete acoustic resonance batching device of the first aspect embodiment of the present invention, it includes: A mixing tank, which is provided with a mixing chamber; A first ultrasonic mechanism, which is connected to the mixing tank; A stirring tank, which is provided with a stirring chamber; A stirring mechanism, which includes a stirring shaft vertically arranged in the stirring chamber and stirring heads arranged on the stirring shaft; A second ultrasonic mechanism, which is connected to the mixing tank. The second ultrasonic mechanism is evenly provided with a plurality of ultrasonic modules around the stirring shaft, and each ultrasonic module can be individually started and stopped for control; Wherein, the mixing tank is used for mixing cement and aggregates, and the stirring tank is used for concrete mixing.

[0008] The concrete acoustic wave resonance batching device according to the embodiment of the present invention has at least the following beneficial effects: In the concrete acoustic wave resonance batching device of this embodiment, ultrasonic mixing is first performed to make different aggregates mix evenly first, and then stirring is carried out. And during the stirring process, ultrasonic vibration can be performed on different positions according to the particle size distribution of the aggregates, so as to ensure that the particle size distribution of the aggregates in the concrete is uniform, which can effectively improve the quality of the concrete and the concrete mixing efficiency.

[0009] According to some embodiments of the present invention, a mixing shaft is vertically arranged in the mixing cavity, and spiral blades are arranged in the circumferential direction of the mixing shaft. The spiral blades spirally extend downward from the upper end of the mixing shaft and toward the side wall of the mixing cavity.

[0010] According to some embodiments of the present invention, a first discharge port is arranged 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 stirring tank.

[0011] According to some embodiments of the present invention, the stirring head has a conical structure in the vertical direction, and a plurality of stirring rods are spirally diverged from top to bottom on the stirring head.

[0012] According to some embodiments of the present invention, a secondary fork is arranged at the lower end of the stirring rod, and the secondary fork extends toward the stirring shaft in a posture close to the bottom of the stirring cavity.

[0013] According to some embodiments of the present invention, a second discharge port is arranged at the bottom of the stirring tank, and the ultrasonic modules and the second discharge port are distributed in an angular dislocation manner.

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

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

[0016] The particle size distribution optimization method according to the second aspect embodiment of the present invention is applied to the above-mentioned concrete acoustic wave resonance batching device, and includes: first mixing the aggregates, performing ultrasonic vibration during the mixing process, adding water for stirring after mixing evenly, and also performing ultrasonic vibration during the stirring process.

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

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, some additional aspects and advantages will become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the drawings and embodiments, where: Figure 1 is a schematic diagram of an operation process of the present invention; Figure 2 is a schematic diagram of an overall structure of the present invention; Figure 3 is a top view structure schematic diagram of a stirring tank in the present invention; Figure 4 is a schematic diagram of a structure of a stirring mechanism in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where 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 by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0021] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] In the description of the present invention, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0024] In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0025] Concrete is made by mixing materials such as cement, aggregates, water, and admixtures. As one of the important components in concrete, aggregates directly affect the performance of concrete. According to different particle sizes, aggregates can be divided into two types: coarse aggregates and fine aggregates. Among them, the particle size of coarse aggregates generally ranges from 5 mm to 20 mm, mainly filling the voids in concrete and improving the strength and stability of concrete; the particle size of fine aggregates generally ranges from 0.075 mm to 5 mm, which can fill the voids in the bonding material and ash layer and increase the compactness of concrete.

[0026] The particle size of aggregates has a direct impact on the performance of concrete. Fine aggregates can improve the workability of concrete, make the hardened concrete more compact and stable, and control the cracking of concrete to a certain extent. However, when too much fine aggregate is used or under the action of a long-term large load, it will have an adverse impact on 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 the shrinkage and cracking of concrete. However, if the size of the coarse aggregates is inappropriate or contains too many fine particles, it will affect the quality and performance of concrete.

[0027] In the related prior art, there are still deficiencies in the uniformity of aggregate distribution during the concrete mixing process, and the distribution uniformity is not ideal, which affects the quality of concrete.

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

[0029] Specifically, referring to Figures 2 to 4 , the concrete acoustic resonance batching device of this embodiment includes: A mixing tank 100, and the mixing tank 100 is provided with a mixing chamber 101; A first ultrasonic mechanism 104, and the first ultrasonic mechanism 104 is connected to the mixing tank 100; A stirring tank 200, and the stirring tank 200 is provided with a stirring chamber 201; A stirring mechanism, which includes a stirring shaft 202 vertically arranged in the stirring chamber 201 and stirring heads arranged on the stirring shaft 202; The second ultrasonic mechanism 204 is connected to the mixing tank 200. A plurality of ultrasonic modules are evenly arranged around the mixing shaft 202 of the second ultrasonic mechanism 204, and each ultrasonic module can be individually controlled to start and stop. Among them, the mixing tank 100 is used for mixing cement and aggregates, and the mixing tank 200 is used for concrete mixing.

[0030] It can be understood that for the concrete acoustic resonance batching device of this embodiment, ultrasonic mixing is first performed to make different aggregates mix evenly first, and then stirring is carried out. And during the stirring process, ultrasonic vibration can be performed on different positions according to the particle size distribution of the aggregates, so as to ensure that the particle size distribution of the aggregates in the concrete is uniform, which can effectively improve the quality of the concrete and the concrete mixing efficiency.

[0031] In some embodiments of the present invention, a mixing shaft 102 is vertically arranged in the mixing chamber 101. Helical blades 103 are arranged in the circumferential direction of the mixing shaft 102, and the helical blades 103 helically extend 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 helical blades 103 will rotate accordingly. Since the helical blades 103 spread from top to bottom in a direction away from the mixing shaft 102, they can effectively stir the aggregates and cement in the mixing chamber 101 to make them mix evenly.

[0033] And preferably, the lower end of the helical blade 103 is close to the side wall of the mixing chamber 101 to ensure stirring of the materials in the entire mixing chamber 101.

[0034] During the stirring process, the helical blades 103 will push the materials to roll up and down, so that the materials can cross over the helical blades 103, and the stirring is thorough, which can improve the efficiency of material mixing.

[0035] And because the helical blades 103 are designed in a conical shape, when the aggregates and cement are poured into the mixing chamber 101, there will be no accumulation and they can be effectively dispersed.

[0036] The mixing shaft 102 can be driven by a motor, and no more description will be given here.

[0037] In some embodiments of the present invention, a first discharge port is arranged 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 the aggregate and cement, and the material is in a dry state at this time, it is easy to generate dust. In this embodiment, the material is transferred through the discharge channel defined by the flexible structure, which can effectively suppress dust. Moreover, after mixing, the aggregate and cement are already mixed evenly. If other conveying methods are used, the mixing effect will inevitably be affected. In this embodiment, the material is directly discharged by gravity, which can effectively ensure uniformity.

[0039] Referring to Figure 4 , in some embodiments of the present invention, the stirring head is in a conical structure along the vertical direction, and a plurality of stirring rods 203 are spirally arranged in a divergent manner from top to bottom on the stirring head.

[0040] Similarly, in this embodiment, the stirring head is set in a conical structure, which can not only fully stir the material at the bottom but also avoid material accumulation at the upper end.

[0041] Referring to Figure 4 , in some embodiments of the present invention, a secondary fork 207 is arranged at the lower end of the stirring rod 203, and the secondary fork 207 extends towards the stirring shaft 202 in a posture close to the bottom of the stirring cavity 201.

[0042] Since the stirring rod 203 is designed in a conical divergent shape, there is a large gap between its lower part and the stirring shaft 202. In this embodiment, by arranging the secondary fork 207 at the lower end of the stirring rod 203, the corresponding position of this space can be effectively stirred to ensure the stirring effect of the concrete.

[0043] The specific structure of the secondary fork 207 can be flexibly set according to needs and is not specifically limited here.

[0044] Referring to Figure 3 , in some embodiments of the present invention, a second discharge port 206 is arranged at the bottom of the mixing tank 200, and the ultrasonic module and the second discharge port 206 are distributed in an angular misalignment manner.

[0045] By distributing in an angular misalignment manner, it is possible to prevent the concrete from affecting the ultrasonic module, which is beneficial to extending the 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 provided with a second ultrasonic mechanism 204, arranging the shock-absorbing support legs 205 can effectively reduce the vibration feeling of the mixing tank 200 on the ground. The shock-absorbing support legs 205 can use rubber pads for shock absorption, or other known structures can be used for shock absorption.

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

[0049] Combined with Figure 1 , an embodiment of the present invention further provides a method for optimizing particle size distribution, which is applied to the above concrete acoustic resonance batching device, and includes: first mixing the aggregates, performing ultrasonic vibration during the mixing process, adding water for stirring after mixing evenly, and also performing ultrasonic vibration during the stirring process.

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

[0051] Specifically, first add solid and powder materials such as aggregates and cement into the mixing tank 100, stir for a set duration through the spiral blade 103, then stop stirring, and then start the first ultrasonic mechanism 104 for a set duration. After that, stir for a set duration again, and then discharge all the mixed materials into the stirring tank 200; Then add an appropriate amount of water, start the stirring mechanism for a set duration, then start the second ultrasonic mechanism 204 for a set duration. After that, stir for a set duration again, and then judge. By visual inspection, determine whether the particle size distribution of the aggregates on the periphery of the stirring shaft 202 is uniform and whether the stirring is thorough. When it is possible to clearly see that the particle size of the aggregates at a certain place is more concentrated than other positions and is not fully mixed with the cement slurry, start the closest ultrasonic module for a set duration. After that, stir for a set duration again and judge again until the particle size of the aggregates is not significantly uneven and no cement slurry is found on the surface of the aggregates, that is, the concrete stirring 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. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention. In addition, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

Claims

1. A concrete acoustic resonance batching device, characterized in that, Comprising: A mixing tank, which is provided with a mixing chamber; A first ultrasonic mechanism, which is connected to the mixing tank; A stirring tank, which is provided with a stirring chamber; A stirring mechanism, which includes a stirring shaft vertically arranged in the stirring chamber and stirring heads arranged on the stirring shaft; A second ultrasonic mechanism, which is connected to the stirring tank, and a plurality of ultrasonic modules are uniformly arranged around the stirring shaft of the second ultrasonic mechanism, and each ultrasonic module can be individually started and stopped; Among them, the mixing tank is used for mixing cement and aggregates, and the stirring tank is used for concrete mixing.

2. The concrete acoustic resonance batching device according to claim 1, wherein A mixing shaft is vertically arranged in the mixing chamber, spiral blades are arranged in the circumferential direction of the mixing shaft, and the spiral blades spirally extend downward from the upper end of the mixing shaft and towards the side wall of the mixing chamber.

3. The concrete acoustic resonance batching device according to claim 2, characterized in that A first discharge port is arranged at the bottom of the mixing tank, and 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 stirring tank.

4. The concrete acoustic wave resonance batching device according to claim 1, wherein The stirring head is in a conical structure in the vertical direction, and a plurality of stirring rods are spirally diverged from top to bottom on the stirring head.

5. The concrete acoustic resonance batching device according to claim 4, characterized in that, A secondary fork is arranged at the lower end of the stirring rod, and the secondary fork extends towards the stirring shaft in a posture close to the bottom of the stirring chamber.

6. The concrete acoustic wave resonance batching device according to claim 1, wherein, A second discharge port is arranged at the bottom of the stirring tank, and the ultrasonic modules and the second discharge port are distributed in an angular misalignment manner.

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

8. The concrete acoustic wave resonance batching device according to claim 1, characterized in that A vision sensor is arranged above the stirring chamber.

9. An optimized method for particle size distribution applied to the concrete acoustic resonance batching device according to claim 1, characterized in that, Comprising: First, mix the aggregates, perform ultrasonic vibration during the mixing process, add water for stirring after mixing evenly, and also perform ultrasonic vibration during the stirring process.

10. The particle size distribution optimization method according to claim 9, wherein During the stirring process, control the vibration of different ultrasonic modules or control the ultrasonic modules to vibrate at different frequencies according to the particle size distribution.

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