Concrete waste recycling apparatus

Abstract

The application relates to a concrete waste recycling device and relates to the technical field of concrete waste recycling.The concrete waste recycling device comprises a separation cylinder provided with a feeding port at the top;an air inlet pipe arranged in the tangential direction of the inner side wall of the separation cylinder and used for spraying high-pressure gas; a discharging mechanism used for discharging the separated concrete waste and light impurities respectively; an atomizing spray element used for spraying atomized water into the separation cylinder; and a rotating dispersing assembly used for dispersing the concrete waste and the light impurities.The concrete waste crushed by the crushing device is poured into the separation cylinder through the feeding port, then the atomizing spray element sprays atomized water, the rotating dispersing assembly disperses the concrete waste and the light impurities, the air inlet pipe sprays high-pressure gas to form a rotating vortex in the separation cylinder, and finally the discharging mechanism discharges the separated concrete waste and light impurities respectively, so that the high-humidity and sticky concrete waste is efficiently separated, and the quality and performance of the recycled aggregate are improved.

Description

Technical Field

[0001] This application relates to the technical field of concrete waste recycling, and in particular to equipment for the recycling and reuse of concrete waste. Background Technology

[0002] With the acceleration of urbanization, the amount of construction waste has surged, with concrete waste accounting for a gradually increasing proportion. To achieve resource utilization, concrete waste needs to undergo processes such as crushing, screening, and impurity separation to produce recycled aggregates.

[0003] Concrete waste contains a lot of lightweight impurities, such as wood chips, plastics, and paper. Currently, vibrating screens or sorting machines are often used to separate lightweight impurities from concrete waste.

[0004] However, during the recycling process, concrete waste often becomes wet and sticky. Because this wet and sticky material tends to clump together, impurities are trapped, making it difficult to separate effectively by wind or vibration. This results in recycled aggregates containing a significant amount of lightweight impurities, affecting the quality and performance of recycled concrete. Therefore, it is necessary to design a device that can efficiently separate highly wet and sticky concrete waste to improve the quality and performance of recycled aggregates. Utility Model Content

[0005] In order to efficiently separate concrete waste in a highly wet and viscous state and improve the quality and performance of recycled aggregates, this application provides equipment for the recycling and reuse of concrete waste.

[0006] The concrete waste recycling and reuse equipment provided in this application adopts the following technical solution: Equipment for recycling and reusing concrete waste includes: A separating cylinder, wherein the separating cylinder is hollow inside and has a feed inlet at the top; The intake pipes, including multiple sets of intake pipes, are arranged tangentially along the inner wall of the separator and eject high-pressure gas. The high-pressure gas ejected from the intake pipes forms a rotating vortex inside the separator. A discharge mechanism is provided on the separation cylinder and is used to discharge the separated concrete waste and light impurities separately. An atomizing spray element is disposed on a separation cylinder and used to spray atomized water into the separation cylinder; A rotary dispersing assembly is disposed on a separation cylinder and is used to disperse concrete waste and lightweight impurities.

[0007] By adopting the above technical solution, the crushed concrete waste is poured into the separation cylinder from the feed inlet, and then atomized water is sprayed through the atomizing spray component. The concrete waste and lightweight impurities are dispersed by the rotating dispersing component. Then, high-pressure gas is sprayed out from the air inlet pipe and forms a rotating vortex in the separation cylinder. Finally, the separated concrete waste and lightweight impurities are discharged separately through the discharge mechanism. This method can efficiently separate concrete waste in a high-moisture and sticky state and improve the quality and performance of recycled aggregates.

[0008] Furthermore, the discharge mechanism includes: A heavy material discharge pipe is provided at the bottom of the separation cylinder and is used to discharge the heavy material inside the separation cylinder; A control valve is installed on the heavy material discharge pipe and is used to control the opening or closing of the heavy material discharge pipe; A light material discharge pipe is located at the center of the top of the separation cylinder, and the light material discharge pipe is used to discharge light impurities. A negative pressure component is connected to a light material discharge pipe and uses negative pressure to discharge light impurities and excess gas.

[0009] By adopting the above technical solution, the negative pressure component provides negative pressure suction to the light material discharge pipe, thereby discharging the light impurities that move with the rotating vortex in the separation cylinder. At the same time, after the concrete waste and light impurities are separated, the control valve opens the heavy material discharge pipe to discharge the heavy material, thus completing the separate discharge of concrete waste and light impurities.

[0010] Furthermore, the negative pressure component includes: A settling tank, which is connected to the outlet of the light material discharge pipe; A negative pressure pipe is installed at the top of the settling tank and is used to provide negative pressure suction. A filter screen is disposed on the end face of the negative pressure pipe and is used to block light impurities from entering the negative pressure pipe.

[0011] By adopting the above technical solution, the airflow carries light impurities into the settling tank, and the negative pressure pipe sucks out the excess gas through negative pressure suction. At the same time, the filter screen prevents impurities from entering the negative pressure pipe, so that the light impurities carried by the airflow settle in the settling tank, thereby facilitating the collection of the discharged light impurities.

[0012] Furthermore, the atomizing spray component consists of multiple sets of ultrasonic atomizing nozzles arranged in a circumferential array at the top of the separation cylinder.

[0013] By adopting the above technical solution, multiple sets of ultrasonic atomizing nozzles form a uniform water mist covering layer in the separation cylinder, thereby wetting the lightweight impurities adhering to the surface of concrete waste, reducing their stickiness, and without significantly increasing the total water content of the material.

[0014] Furthermore, the rotary dispersing component includes: A rotating shaft is rotatably mounted on the centerline of the separation cylinder; The levers are arranged at intervals on the rotating shaft. The levers rotate with the rotating shaft and break up the concrete waste and light impurities in the separation cylinder. A driving component is disposed on the separating cylinder and connected to the rotating shaft, and the driving component is used to drive the rotating shaft to rotate.

[0015] By adopting the above technical solution, the driving component drives multiple sets of levers to rotate at low speed through the rotating shaft, thereby breaking up the clumps of materials and improving the separation efficiency of concrete waste and lightweight impurities.

[0016] Furthermore, the lever has an L-shaped structure, and the long side of the lever is located on the side wall of the rotating shaft.

[0017] By adopting the above technical solution, the L-shaped lever increases the material-dispensing area, thereby improving the efficiency of breaking up agglomerated materials.

[0018] Furthermore, the inner wall of the separation cylinder is covered with a wear-resistant ceramic liner.

[0019] By adopting the above technical solution, the wear-resistant ceramic liner improves the wear resistance of the inner wall of the separator, thereby adapting to the rotation and erosion of concrete debris.

[0020] Furthermore, the separation cylinder has a conical structure with a bottom plate diameter smaller than the top diameter. A flat plate is provided at the bottom of the separation cylinder, and the flat plate is inclined at an angle of 1°-3°. The heavy material discharge pipe is located on the lower side of the flat plate.

[0021] By adopting the above technical solution, the conical structure facilitates the sliding of concrete waste in the separation cylinder along the conical wall onto the flat plate. At the same time, the inclined flat plate and the lever move the concrete waste after separation, so that it can be discharged through the heavy material discharge pipe.

[0022] In summary, this application includes at least one of the following beneficial technical effects: By pouring crushed concrete waste into a separation cylinder, atomized water is sprayed through multiple ultrasonic atomizing nozzles. Multiple levers on the rotating shaft are driven by a drive unit to break up the concrete waste and lightweight impurities. High-pressure gas is then ejected from the air inlet pipe and forms a rotating vortex inside the separation cylinder. Finally, lightweight impurities are discharged through the lightweight material discharge pipe by negative pressure. After separation, heavy material is discharged through the heavy material discharge pipe. This method efficiently separates concrete waste in a highly wet and sticky state and improves the quality and performance of recycled aggregates. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the concrete waste recycling and reuse equipment of this application; Figure 2 yes Figure 1 A schematic diagram of the half-section structure.

[0024] Reference numerals: 1. Separation cylinder; 11. Flat plate; 12. Feed inlet; 13. Air inlet pipe; 2. Discharge mechanism; 21. Heavy material discharge pipe; 22. Control valve; 23. Light material discharge pipe; 3. Negative pressure assembly; 31. Settling tank; 32. Negative pressure pipe; 33. Filter screen; 4. Atomizing spray component; 41. Ultrasonic atomizing nozzle; 5. Rotary dispersing assembly; 51. Rotating shaft; 52. Lever; 53. Drive component. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0026] This application discloses equipment for recycling and reusing concrete waste.

[0027] Reference Figure 1 and Figure 2 The concrete waste recycling equipment includes a separation cylinder 1, an air inlet pipe 13, a discharge mechanism 2, an atomizing spray component 4, and a rotating dispersing component 5.

[0028] Reference Figure 2 The separator 1 is fixedly installed on the bracket. The separator 1 is hollow inside and has a conical structure. Its interior is also a conical cavity structure. The bottom diameter of the separator 1 is smaller than the top diameter. A flat plate 11 is provided at the bottom of the separator 1. The flat plate 11 is inclined at an angle of 1°-3° so that the heavy material slides to the lower side of the flat plate 11. At the same time, a wear-resistant ceramic liner is installed on the inner wall of the separator 1. The flat plate 11 is also a wear-resistant ceramic liner to improve the wear resistance of the separator 1.

[0029] Reference Figure 2 The top of the separation cylinder 1 is provided with a feed inlet 12 to pour the crushed concrete waste into the separation cylinder 1; multiple sets of air inlet pipes 13 are provided, and the multiple sets of air inlet pipes 13 are fixedly installed on the side wall of the separation cylinder 1 at intervals. The air inlet pipes 13 are used to spray high-pressure gas. The high-pressure gas sprayed from the air inlet pipes 13 enters the separation cylinder 1 along the tangential direction of the inner side wall of the separation cylinder 1. The gas sprayed from the multiple sets of air inlet pipes 13 forms a rotating vortex in the separation cylinder 1. The rotating vortex causes the light impurities in the concrete waste entering through the feed inlet 12 to separate from the heavier concrete waste.

[0030] Reference Figure 1 and Figure 2The discharge mechanism 2 is installed on the separation cylinder 1. The discharge mechanism 2 is used to discharge the separated concrete waste and light impurities separately. The discharge mechanism 2 includes a heavy material discharge pipe 21, a control valve 22, a light material discharge pipe 23, and a negative pressure component 3. The heavy material discharge pipe 21 is fixedly installed on the bottom of the separation cylinder 1. The side of the heavy material discharge pipe 21 closest to the separation cylinder 1 is located on the lower side of the flat plate 11. The heavy material discharge pipe 21 is used to discharge the separated heavy material in the separation cylinder 1. The control valve 22 is fixedly installed on the heavy material discharge pipe 21. The control valve 22 is used to control the opening or closing of the heavy material discharge pipe 21. When the concrete waste is poured into the separation cylinder 1 from the feed inlet 12, the control valve 22 closes the heavy material discharge pipe 21, so that the concrete waste is separated into light impurities in the separation cylinder 1. After the separation is completed, the control valve 22 opens the heavy material discharge pipe 21, so that the separated heavy material is discharged from the separation cylinder 1.

[0031] Reference Figure 2 The light material discharge pipe 23 is fixedly installed at the center of the top of the separation cylinder 1. The light material discharge pipe 23 is used to discharge light impurities in the separation cylinder 1. The negative pressure component 3 is connected to the light material discharge pipe 23. The negative pressure component 3 is used to provide negative pressure so as to discharge light impurities and excess gas in the separation cylinder 1 through the light material discharge pipe 23.

[0032] Reference Figure 2 The negative pressure assembly 3 includes a settling tank 31, a negative pressure pipe 32, and a filter screen 33. The settling tank 31 is connected to the outlet of the light material discharge pipe 23, and the outlet of the light material discharge pipe 23 is connected to the top of the settling tank 31. The negative pressure pipe 32 is fixedly installed on the top of the settling tank 31 and is used to provide negative pressure suction. The filter screen 33 is fixedly installed on the negative pressure pipe 32 and is used to block light impurities from entering the negative pressure pipe 32. This allows light impurities and excess gas in the separation cylinder 1 to enter the settling tank 31, where the filter screen 33 blocks the light impurities. Finally, only gas is discharged through the negative pressure pipe 32, and the light impurities are concentrated in the settling tank 31. In this embodiment, the bottom of the settling tank 31 is provided with a bottom by threads. By periodically removing the bottom and cleaning the light impurities in the settling tank 31, good negative pressure suction in the separation cylinder 1 is ensured.

[0033] Reference Figure 2 The atomizing spray element 4 is installed on the top of the separation cylinder 1. The atomizing spray element 4 consists of multiple sets of ultrasonic atomizing nozzles 41 arranged in a circumferential array on the top of the separation cylinder 1. The multiple sets of ultrasonic atomizing nozzles 41 spray atomized water onto the concrete waste in the separation cylinder 1, thereby wetting the light impurities adhering to the surface of the concrete waste, reducing their stickiness, helping the impurities to loosen, and at the same time not significantly increasing the total water content of the material.

[0034] Reference Figure 2A rotary dispersing assembly 5 is installed on the separation cylinder 1. The rotary dispersing assembly 5 is used to disperse concrete waste and lightweight impurities. The rotary dispersing assembly 5 includes a rotating shaft 51, levers 52, and a driving component 53. The rotating shaft 51 is fixedly installed on the centerline of the separation cylinder 1 and passes through the centerline of the flat plate 11. The rotating shaft 51 is rotatably connected to the bottom of the separation cylinder 1 via bearings. Multiple sets of levers 52 are provided, spaced apart on the rotating shaft 51. Multiple sets of levers 52 are arranged in a circular array at the same height, and multiple sets of levers 52 are also spaced apart along the axial direction of the rotating shaft 51. This allows the rotating shaft 51 to rotate simultaneously, driving multiple sets of levers 52 to rotate. The multiple sets of levers 52 disperse the concrete waste in the separation cylinder 1. The material and light impurities are broken down, especially the light impurities whose stickiness is reduced by atomized water. The lever 52 breaks them down with the concrete waste, and then the rotating vortex separates them, ultimately improving the separation efficiency of concrete waste and light impurities. At the same time, when the heavy material is discharged, the rotating lever 52 and the inclined flat plate 11 work together to lower the heavy material and slide it onto the heavy material discharge pipe 21. The drive component 53 is set on the separation cylinder 1 and connected to the rotating shaft 51. The drive component 53 is used to drive the rotating shaft 51 to rotate at a low speed. In this embodiment, the drive component 53 is a combination of a drive motor and a reducer. The reducer reduces the output of the drive motor, so that the rotating shaft 51 rotates at a lower speed.

[0035] Reference Figure 2 The lever 52 has an L-shaped structure. The long side of the lever 52 is welded and fixedly installed on the side wall of the rotating shaft 51. The L-shaped lever 52 improves the dispersing effect of concrete waste.

[0036] The working principle of this application embodiment is as follows: The crushed concrete waste is poured into the separation cylinder 1, and then atomized water is sprayed through multiple sets of ultrasonic atomizing nozzles 41. The drive component 53 drives multiple sets of levers 52 on the rotating shaft 51 to break up the concrete waste and light impurities. Then, high-pressure gas is sprayed out from the air inlet pipe 13 and forms a rotating vortex in the separation cylinder 1. Finally, the light impurities are discharged through the light material discharge pipe 23 by negative pressure. After separation, the heavy material is discharged through the heavy material discharge pipe 21. This method can efficiently separate concrete waste in a high wet and sticky state and improve the quality and performance of recycled aggregate.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete waste recycling and reuse equipment, characterized in that: include: Separating cylinder (1), the separating cylinder (1) is hollow inside and has a feed inlet (12) at the top; The intake pipe (13) is arranged along the tangential direction of the inner wall of the separator (1) and sprays high-pressure gas. The high-pressure gas sprayed from the intake pipe (13) forms a rotating vortex in the separator (1). Discharge mechanism (2), which is set on the separation cylinder (1) and is used to discharge the separated concrete waste and light impurities respectively; Atomizing spray element (4), which is disposed on the separation cylinder (1) and used to spray atomized water into the separation cylinder (1); A rotary dispersing assembly (5) is disposed on a separator (1) and is used to disperse concrete waste and lightweight impurities.

2. The concrete waste recycling and reuse equipment according to claim 1, characterized in that: The material discharge mechanism (2) includes: Heavy material discharge pipe (21) is provided at the bottom of the separation cylinder (1) and is used to discharge the heavy material in the separation cylinder (1); Control valve (22), which is installed on the heavy material discharge pipe (21) and used to control the opening or closing of the heavy material discharge pipe (21); Light material discharge pipe (23) is located at the top center of the separation cylinder (1) and is used to discharge light impurities; The negative pressure component (3) is connected to the light material discharge pipe (23) and discharges light impurities and excess gas through negative pressure.

3. The concrete waste recycling and reuse equipment according to claim 2, characterized in that: The negative pressure component (3) includes: Settling tank (31), which is connected to the outlet of light material discharge pipe (23); Negative pressure pipe (32), which is disposed on the top of the settling tank (31) and is used to provide negative pressure suction; A filter screen (33) is disposed on the end face of the negative pressure pipe (32) and is used to block light impurities from entering the negative pressure pipe (32).

4. The concrete waste recycling and reuse equipment according to claim 1, characterized in that: The atomizing spray component (4) consists of multiple sets of ultrasonic atomizing nozzles (41) arranged in a circumferential array on the top of the separation cylinder (1).

5. The concrete waste recycling and reuse equipment according to claim 4, characterized in that: The rotary dispersing component (5) includes: A rotating shaft (51) is rotatably disposed on the center line of the separation cylinder (1); A lever (52), multiple sets of levers (52) are spaced apart on the rotating shaft (51), and the multiple sets of levers (52) rotate with the rotating shaft (51) and disperse the concrete waste and light impurities in the separation cylinder (1); A drive unit (53) is disposed on the separation cylinder (1) and connected to the rotating shaft (51). The drive unit (53) is used to drive the rotating shaft (51) to rotate.

6. The concrete waste recycling and reuse equipment according to claim 5, characterized in that: The lever (52) has an L-shaped structure, and the long side of the lever (52) is set on the side wall of the rotating shaft (51).

7. The concrete waste recycling and reuse equipment according to claim 1, characterized in that: The inner wall of the separation cylinder (1) is covered with a wear-resistant ceramic liner.

8. The concrete waste recycling and reuse equipment according to claim 2, characterized in that: The separation cylinder (1) has a conical structure and the bottom plate diameter is smaller than the top diameter. A flat plate (11) is provided at the bottom of the separation cylinder (1). The flat plate (11) is inclined and the inclination angle is 1°-3°. The heavy material discharge pipe (21) is located on the lower side of the flat plate (11).

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