Anti-carbonization recycled concrete

Abstract

The utility model relates to the technical field of building materials, and discloses anti-carbonization recycled concrete which comprises a support, a crushing assembly is arranged at the top of the support, a plurality of supporting plates are fixedly connected to the inner wall of the support, the tops of the two supporting plates at the bottom are fixedly connected with the same screening box, and the screening box is fixedly connected with the crushing assembly. A fixed shaft is fixedly connected to the inner wall of the screening box, a vibration filter plate is rotatably connected to the outer wall of the fixed shaft, a baffle is fixedly connected to the rear side of the outer wall of the vibration filter plate, a buffer pad is fixedly connected to the top of the supporting plate on the rear side of the bottom, and a vibration motor is fixedly connected to the top of the buffer pad; and the bottom of the screening box communicates with a mixing barrel. According to the utility model, the vibration filter plate is driven by the vibration motor to screen materials, and the baffle plate assists in full screening, so that high-quality raw materials with uniform particle sizes are provided for subsequent preparation of anti-carbonization recycled concrete, and the mixing uniformity and the overall performance of the concrete are favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of building materials technology, and in particular to a carbonation-resistant recycled concrete. Background Technology

[0002] With the development of the construction industry, the demand for concrete, as one of the most important building materials, has been increasing year by year. However, the production and use of traditional concrete has put enormous pressure on the environment, especially the problem of waste concrete disposal. Recycled concrete, as an environmentally friendly material, can effectively reduce resource waste and environmental pollution by recycling waste concrete. However, recycled concrete has problems such as rapid carbonation and poor durability in practical applications, which limits its widespread use. At present, domestic and foreign research focuses on improving the mechanical properties and durability of recycled concrete, but research on its carbonation resistance is still limited.

[0003] A search revealed Chinese patent publication number CN215038474U, which discloses a concrete vibration device and its usage method. The device includes an installation plate and an installation box. The installation box is fixedly installed on the bottom surface of the installation plate. A telescopic rod and an installation sleeve are provided on the bottom surface of the installation box, with the telescopic rod extending into the interior of the installation box. An opening and a telescopic support rod are provided on the bottom surface of the installation sleeve, with the telescopic support rod installed inside the opening. One end of the telescopic rod and the telescopic support rod is fixedly connected to a connecting base plate. A shock-absorbing spring is installed on the bottom surface of the connecting base plate, and one end of the shock-absorbing spring is fixedly connected to a vibrating rod. This invention facilitates the raising and lowering of the vibrating rod by setting the telescopic rod, thereby vibrating the concrete. The shock-absorbing spring provides shock absorption during vibration, protecting the equipment. The use of multiple vibrating rods increases the efficiency and improves the quality of concrete vibration. However, in actual use, the device lacks a screening structure, making it impossible to guarantee the uniformity of the vibrated concrete. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a carbonation-resistant recycled concrete, which aims to improve the problem that the existing technology does not have a screening structure and cannot guarantee the uniformity of the concrete after vibration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a carbonation-resistant recycled concrete, comprising a support frame, wherein multiple support plates are fixedly connected to the inner wall of the support frame, and the top of the bottom two support plates are fixedly connected to the same screening box, wherein a fixed shaft is fixedly connected to the inner wall of the screening box, and a vibrating filter plate is rotatably connected to the outer wall of the fixed shaft, wherein a baffle is fixedly connected to the rear side of the outer wall of the vibrating filter plate, wherein a buffer pad is fixedly connected to the top of the bottom rear support plate, and a vibrating motor is fixedly connected to the top of the buffer pad, wherein a crushing component is provided at the top of the support frame, and a mixing tank is connected to the bottom of the screening box, wherein a stirring mechanism is provided on the inner wall of the mixing tank.

[0006] Through the above technical solution: the bracket provides stable support for the entire device, the support plate provides stable support for components such as the screening box, the screening box, together with the vibrating filter plate and the vibrating motor, can effectively screen the crushed aggregate, the baffle ensures sufficient screening, the buffer pad reduces the impact of vibration on the equipment, the crushing component is used to crush the aggregate, and the mixing tank and the stirring mechanism are used to mix the materials. The whole process realizes the complete preparation process of anti-carbonation recycled concrete from aggregate crushing, screening to mixing.

[0007] As a further description of the above technical solution:

[0008] The stirring mechanism includes a servo motor, the bottom of which is fixedly connected to the top of the mixing tank. A transmission rod is fixedly connected to the output end of the servo motor. Wave rods are fixedly connected to the outer walls of the transmission rod. Scrapers are fixedly connected to the outer walls of the multiple wave rods. Two scrapers are fixedly connected to the bottom of the outer wall of the transmission rod. Two scraper blades are fixedly connected to the outer wall of the transmission rod.

[0009] The above technical solution provides power for stirring, the transmission rod drives the wave bar to rotate, the wave bar causes the material to generate a complex flow trajectory, promoting initial mixing, the scraper and scraper can scrape off the material on the barrel wall to prevent the material from sticking, and the scraper scoops up the material at the bottom of the barrel to enhance the stirring effect and ensure that the material is fully and evenly mixed in the mixing barrel.

[0010] As a further description of the above technical solution:

[0011] The crushing assembly includes a crushing box, the bottom of which is fixedly connected to the top of two support plates, and the top of the crushing box is connected to a feed inlet.

[0012] The above technical solution provides space for aggregate crushing, supports the crushing box to make it stable, and facilitates the feeding of recycled aggregate into the crushing box, thus preparing for subsequent crushing operations.

[0013] As a further description of the above technical solution:

[0014] Two rotating shafts are fixedly connected to the inner wall of the crushing box, and the top of the outer wall of the feed inlet is rounded.

[0015] Through the above technical solution: the rotating shaft provides support for the rotation of subsequent components, which is the basis for realizing the aggregate crushing function. The rounded treatment at the top of the feed inlet allows the aggregate to slide smoothly into the crushing box, reducing blockage and improving feeding efficiency.

[0016] As a further description of the above technical solution:

[0017] Both of the two rotating shafts have rotating cylinders rotatably connected to their outer walls, and both rotating cylinders have multiple hammers fixedly connected to their outer walls.

[0018] The above technical solution involves a rotating shaft driving a rotating drum to rotate. The hammers on the drum, under centrifugal force, powerfully hammer the recycled aggregate entering the crushing box, breaking large pieces of aggregate into smaller particles and completing the initial crushing task of the aggregate.

[0019] As a further description of the above technical solution:

[0020] The top of the bracket is fixedly connected to a top rail, and the left and right sides of the multiple support plates are fixedly connected to side plates.

[0021] Through the above technical solutions: the top rail enhances the stability of the top structure of the support and provides a certain degree of protection for the crushing components at the top; the side plates enhance the structural strength of the entire device and prevent materials from splashing out of the device, thus playing a role in protecting and gathering materials.

[0022] As a further description of the above technical solution:

[0023] The front of the screening box is rotatably connected to a door, and a handle is fixedly connected to the outer wall of the door.

[0024] The above technical solution allows staff to easily clean, inspect, and observe the screening process inside the screening box, while the handle facilitates opening and closing the door, making operation more convenient.

[0025] As a further description of the above technical solution:

[0026] A switch is provided on the lower part of the outer wall of the mixing tank, and an instrument panel is provided on the upper part of the outer wall of the mixing tank.

[0027] Through the above technical solution: the switch can control the start and stop of the stirring mechanism in the mixing tank, which is convenient for operators to operate according to the actual situation. The instrument panel can display the relevant parameters of the material in the mixing tank in real time, which is convenient for staff to monitor and adjust the stirring process, and ensure the stirring effect and product quality.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the vibrating motor drives the vibrating filter plate to screen the material, and the baffle assists in full screening, which provides high-quality raw materials with uniform particle size for the subsequent preparation of carbonation-resistant recycled concrete, and helps to improve the mixing uniformity and overall performance of the concrete.

[0030] 2. In this utility model, the servo motor drives the transmission rod to rotate, and the wave rod causes the material to form a complex trajectory for initial mixing. The scraper and scraper strip scrape off the material on the barrel wall, and the scraper scoops up the material at the bottom of the barrel, allowing the materials to fully mix. This allows the nano-silica and polypropylene fibers to play their full role, significantly improving the carbonation resistance of recycled concrete, improving the microstructure and crack resistance. Moreover, the construction process is simple and low-cost, making it easy to promote on a large scale, and it has good economic and social benefits. Attached Figure Description

[0031] Figure 1 This is a perspective view of a carbonation-resistant recycled concrete proposed in this utility model.

[0032] Figure 2 This is a right view of a carbonation-resistant recycled concrete proposed in this utility model.

[0033] Figure 3 This is a schematic diagram of the structure of a crushing component for carbonation-resistant recycled concrete proposed in this utility model.

[0034] Figure 4 This is a schematic diagram of the structure of a support for carbonation-resistant recycled concrete proposed in this utility model.

[0035] Figure 5 This is a partial structural cross-sectional view of a carbonation-resistant recycled concrete proposed in this utility model.

[0036] Figure 6 This is a schematic diagram of the mixing mechanism for carbonation-resistant recycled concrete proposed in this utility model.

[0037] Legend:

[0038] 1. Support frame; 2. Mixing mechanism; 201. Servo motor; 202. Transmission rod; 203. Wave rod; 204. Scraper; 205. Scraper blade; 206. Scraper strip; 3. Support plate; 4. Screening box; 5. Fixed shaft; 6. Vibrating filter plate; 7. Baffle; 8. Buffer pad; 9. Vibrating motor; 10. Mixing tank; 11. Crushing box; 12. Feed inlet; 13. Rotating shaft; 14. Rotating drum; 15. Hammer; 16. Top rail; 17. Side plate; 18. Box door; 19. Handle; 20. Switch; 21. Instrument panel. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] See attached document Figure 1 Appendix Figure 3 and attached Figure 5This utility model provides an embodiment of a carbonation-resistant recycled concrete, comprising a support 1. The support 1 provides stable support for the entire device, ensuring the normal operation of each component. Multiple support plates 3 are fixedly connected to the inner wall of the support 1. The support plates 3 enhance the structural stability of the support 1 and provide an installation foundation for other components. The tops of the two bottom support plates 3 are fixedly connected to the same screening box 4. The screening box 4 is used to screen the crushed aggregate, separating aggregates of different particle sizes. A fixed shaft 5 is fixedly connected to the inner wall of the screening box 4. The fixed shaft 5 provides stable rotational support for the vibrating filter plate 6, ensuring its normal operation. The outer wall of the fixed shaft 5 rotates... A vibrating filter plate 6 is connected. During vibration, the vibrating filter plate 6 screens aggregates through the sieve holes, allowing small aggregate particles that meet the particle size requirements to fall. A baffle 7 is fixedly connected to the rear side of the outer wall of the vibrating filter plate 6. The baffle 7 prevents large aggregate particles from falling without sufficient screening, ensuring screening efficiency. At the same time, the baffle 7 is connected to the vibrating motor 9, transmitting the vibration effect of the vibrating motor 9 to the vibrating filter plate 6. A buffer pad 8 is fixedly connected to the top of the bottom rear support plate 3. The buffer pad 8 effectively reduces the impact of the vibration generated by the vibrating motor 9 on the overall equipment, preventing equipment damage. The top of the buffer pad 8 is fixedly connected to the vibrating motor 9, which generates high-frequency vibration. The filter plate 6 provides power, enabling it to efficiently screen aggregates. A crushing assembly is located at the top of the support 1, used to crush recycled aggregates into smaller particles to meet subsequent processing requirements. The crushing assembly includes a crushing box 11, which serves as the working area for aggregate crushing, providing space for the crushing operation. The bottom of the outer wall of the crushing box 11 is fixedly connected to the top of two support plates 3, which support the crushing box 11 for stability. The top of the crushing box 11 is connected to an inlet 12, which facilitates the feeding of recycled aggregates into the crushing box 11. The top of the outer wall of the inlet 12 is rounded to allow the aggregates to slide in smoothly. The inner... Two rotating shafts 13 are fixedly connected to the wall. The rotating shafts 13 provide rotational support for the rotating drum 14, ensuring the stable rotation of the rotating drum 14. The rotating drum 14 is rotatably connected to the outer wall of both rotating shafts 13. The rotating drum 14 drives the hammer head 15 fixed to its outer wall to rotate at high speed. Multiple hammer heads 15 are fixedly connected to the outer wall of both rotating drums 14. Under the action of centrifugal force, the hammer heads 15 forcefully hammer the aggregate to achieve the crushing of the aggregate. The bottom of the screening box 4 is connected to a mixing tank 10. The mixing tank 10 is used to fully mix the screened aggregate with cement-based cementitious materials, anti-carbonation additives and reinforcing fiber materials to prepare anti-carbonation recycled concrete. The inner wall of the mixing tank 10 is equipped with a stirring mechanism 2.

[0041] Specifically, recycled aggregate is fed into the crushing box 11 through the feed inlet 12. Two rotating shafts 13 inside the box drive the rotating drum 14 to rotate at high speed. Multiple hammers 15 on the outer wall of the rotating drum 14, under the action of centrifugal force, powerfully hammer the recycled aggregate, crushing large aggregate into smaller particles. The crushed aggregate falls into the screening box 4 at the top of the two bottom support plates 3. The high-frequency vibration generated by the vibrating motor 9 is transmitted to the baffle 7, which drives the vibrating filter plate 6 to vibrate. Under this vibration, the aggregate jumps and rolls on the vibrating filter plate 6. Small aggregate particles that meet the particle size requirements fall through the screen holes, while larger particles remain on the filter plate. When large aggregate particles move to the rear of the vibrating filter plate 6, the baffle 7 plays an intercepting role, ensuring that the aggregate is fully screened, providing aggregates that meet the requirements for the subsequent preparation of carbonation-resistant recycled concrete.

[0042] See attached document Figure 1 Appendix Figure 2 and attached Figure 6 The stirring mechanism 2 includes a servo motor 201, the bottom of which is fixedly connected to the top of the mixing tank 10. The servo motor 201 provides power for the entire stirring process, driving other components to work. A transmission rod 202 is fixedly connected to the output end of the servo motor 201. The transmission rod 202 is used to transmit the rotational power output by the servo motor 201 to other stirring components. Wave rods 203 are fixedly connected to all four sides of the outer wall of the transmission rod 202. The wave shape of the wave rods 203 causes the material to generate a complex flow trajectory in the mixing tank 10, avoiding local accumulation of material and promoting the initial mixing of various components. Multiple wave rods 203... Scrapers 204 are fixedly connected to the outer wall of the mixing drum 10. During rotation, the scrapers 204 are in close contact with the inner wall of the mixing drum 10, scraping off the material adhering to the drum wall and dispersing the material laterally, which helps the anti-carbonation additive to be better dispersed in the concrete. Two scrapers 205 are fixedly connected to the bottom of the outer wall of the transmission rod 202. The scrapers 205 scoop up the material accumulated at the bottom of the mixing drum 10, so that it is fully mixed with the material above, further enhancing the mixing effect. Two scraper strips 206 are fixedly connected to the outer wall of the transmission rod 202. When the scraper strips 206 rotate, they further scrape off the material adhering to the drum wall, ensuring that all materials participate in the mixing and improving the uniformity of mixing.

[0043] Specifically, the recycled aggregate, after crushing and screening, is mixed with cement-based binders, uniformly dispersed anti-carbonation additives, and reinforcing fibers in a specific ratio, and then enters the mixing drum 10. The mixing process is then initiated, with the servo motor 201 driving the transmission rod 202 to rotate at high speed. The wave-shaped rods 203 fixed around the outer wall of the transmission rod 202 rotate synchronously. The wave shape of the wave-shaped rods 203 promotes mixing of the materials within the mixing drum 10. Simultaneously, the scraper 204 fixed to the outer wall of the wave-shaped rods 203 and the two scraper blades 206 fixed to the outer wall of the transmission rod 202 closely adhere to the inner wall of the mixing drum 10 during rotation, scraping off any material adhering to the drum wall and ensuring that all materials participate in the mixing, greatly improving the uniformity of the mixing. The two scrapers 205 fixed to the bottom of the outer wall of the transmission rod 202 scoop up the material accumulated at the bottom of the mixing drum 10, allowing the bottom material to fully mix with the material above, further enhancing the mixing effect. Ultimately, this ensures that all components of the anti-carbonation recycled concrete are fully mixed, guaranteeing product quality.

[0044] See attached document Figure 1 Appendix Figure 2 and attached Figure 4 The top of the support 1 is fixedly connected to a top rail 16, which enhances the stability of the top structure of the support 1 and provides protection for the crushing box 11. Side plates 17 are fixedly connected to the left and right sides of multiple support plates 3, which enhances the structural strength of the entire device. The front of the screening box 4 is rotatably connected to a box door 18, which facilitates the cleaning, maintenance and observation of the screening situation inside the screening box 4 by the staff. A handle 19 is fixedly connected to the outer wall of the box door 18, which makes it easy for the staff to open and close the box door 18. A switch 20 is set in the lower middle part of the outer wall of the mixing tank 10, which can control the start and stop of the stirring mechanism 2 inside the mixing tank 10. An instrument panel 21 is set in the upper middle part of the outer wall of the mixing tank 10, which can display the relevant parameters of the material stirring process inside the mixing tank 10 in real time, which makes it easy for the staff to monitor and adjust the stirring process.

[0045] Specifically, the top rail 16 enhances the stability of the top of the support 1 and provides protection for the crushing box 11, reducing interference from external factors. The side plates 17 on both sides of the support plate 3 strengthen the overall structural strength of the device, ensuring stable operation of the equipment. The door 18 and handle 19 on the front of the screening box 4 greatly facilitate the cleaning and maintenance of the inside of the screening box 4 by the staff, and allow them to observe the screening situation at any time, ensuring smooth screening. The switch 20 on the mixing tank 10 can conveniently control the start and stop of the mixing mechanism 2. The instrument panel 21 displays the mixing parameters in real time, helping the staff to accurately monitor and adjust the mixing process, and comprehensively ensuring the efficient and high-quality preparation of carbonation-resistant recycled concrete.

[0046] Working principle: First, recycled aggregate is fed into the crushing box 11 through the feed inlet 12. The smooth top of the outer wall of the feed inlet 12 allows the aggregate to slide in smoothly, reducing the risk of blockage. After entering the crushing box 11, the two rotating shafts 13 drive the rotating drum 14 to rotate at high speed. Multiple hammers 15 on the outer wall of the rotating drum 14, under the action of centrifugal force, powerfully hammer the recycled aggregate, breaking large pieces of aggregate into smaller particles, completing the initial crushing task. The crushed aggregate then enters the screening stage. The aggregate falls from the crushing box 11 into the screening box 4 at the top of the two bottom support plates 3. Inside the screening box 4, vibrating filter plates... 6. Under the support of the fixed shaft 5, the vibrating motor 9, which is installed on the top buffer pad 8 of the bottom rear support plate 3, starts to run. The buffer pad 8 effectively reduces the impact of the vibration of the vibrating motor 9 on the overall equipment. The high-frequency vibration generated by the vibrating motor 9 is transmitted to the baffle 7, which in turn drives the vibrating filter plate 6 to vibrate. Under the action of vibration, the aggregate jumps and rolls on the vibrating filter plate 6. Small aggregate particles that meet the particle size requirements fall through the screen holes, while larger particles are left on the filter plate. When large aggregate particles move to the rear side of the vibrating filter plate 6, the baffle 7 plays an intercepting role to ensure that the aggregate can be fully screened.

[0047] Furthermore, after the recycled aggregate is crushed and screened, it enters the mixing tank 10 together with cement-based cementitious materials, uniformly dispersed anti-carbonation additives and reinforcing fibers configured in a certain proportion. The mixing operation is then started. First, the servo motor 201 starts and drives the transmission rod 202 to rotate at high speed. As the transmission rod 202 rotates, the wave rods 203 fixed around its outer wall also rotate together. The wave shape of the wave bar 203 creates a complex flow trajectory for the material within the mixing tank 10, preventing material accumulation in localized areas and promoting initial mixing of various components. Simultaneously, the scraper 204 fixedly connected to the outer wall of the wave bar 203 and the two scraper blades 206 fixedly connected to the outer wall of the transmission rod 202 adhere closely to the inner wall of the mixing tank 10 during rotation, scraping off the material adhering to the tank wall to prevent it from sticking and ensuring that all materials can participate in the mixing process, thus improving the uniformity of mixing. Meanwhile, the two scrapers 205 fixedly connected to the bottom of the outer wall of the transmission rod 202 are responsible for scooping up the material accumulated at the bottom of the mixing tank 10, allowing it to mix thoroughly with the material above, further enhancing the mixing effect.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A carbonation resistant recycled concrete comprising a support (1), characterized in that: The inner wall of the support (1) is fixedly connected with multiple support plates (3). The top of the two bottom support plates (3) is fixedly connected with the same screening box (4). The inner wall of the screening box (4) is fixedly connected with a fixed shaft (5). The outer wall of the fixed shaft (5) is rotatably connected with a vibrating filter plate (6). The rear side of the outer wall of the vibrating filter plate (6) is fixedly connected with a baffle (7). The top of the bottom rear support plate (3) is fixedly connected with a buffer pad (8). The top of the buffer pad (8) is fixedly connected with a vibrating motor (9). The top of the support (1) is provided with a crushing component. The bottom of the screening box (4) is connected to a mixing tank (10). The inner wall of the mixing tank (10) is provided with a stirring mechanism (2).

2. The carbonation resistant recycled concrete according to claim 1, characterized in that: The stirring mechanism (2) includes a servo motor (201), the bottom of which is fixedly connected to the top of the mixing tank (10). The output end of the servo motor (201) is fixedly connected to a transmission rod (202). Wave rods (203) are fixedly connected to the outer walls of the transmission rod (202). Scrapers (204) are fixedly connected to the outer walls of the multiple wave rods (203). Two scrapers (205) are fixedly connected to the bottom of the outer wall of the transmission rod (202). Two scraper strips (206) are fixedly connected to the outer wall of the transmission rod (202).

3. The carbonation resistant recycled concrete according to claim 1, wherein: The crushing assembly includes a crushing box (11), the bottom of the outer wall of the crushing box (11) is fixedly connected to the top of two support plates (3) at the top, and the top of the crushing box (11) is connected to a feed inlet (12).

4. The carbonation resistant recycled concrete according to claim 3, wherein: The inner wall of the crushing box (11) is fixedly connected to two rotating shafts (13), and the top of the outer wall of the feed inlet (12) is rounded.

5. The carbonation resistant recycled concrete according to claim 4, wherein: The outer walls of the two rotating shafts (13) are rotatably connected to rotating cylinders (14), and the outer walls of the two rotating cylinders (14) are fixedly connected to multiple hammers (15).

6. The carbonation resistant recycled concrete according to claim 1, wherein: The top of the bracket (1) is fixedly connected to a top rail (16), and the left and right sides of the multiple support plates (3) are fixedly connected to side plates (17).

7. The carbonation resistant recycled concrete according to claim 1, wherein: The front side of the sieving box (4) is rotatably connected to a door (18), and a handle (19) is fixedly connected to the outer wall of the door (18).

8. The carbonation resistant recycled concrete according to claim 1, wherein: A switch (20) is provided on the lower part of the outer wall of the mixing tank (10), and an instrument panel (21) is provided on the upper part of the outer wall of the mixing tank (10).

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