Light material removal system for recycled aggregate of construction waste and preparation method of recycled aggregate

Abstract

The present invention discloses a light matter removal system for recycled aggregates of construction waste and a preparation method for recycled aggregates, belonging to the technical field of solid waste recycling treatment of construction waste, and solving the problem of large dust generation at the aggregate classification site of recycled aggregates of construction waste in the prior art. The light matter removal system for recycled aggregates of construction waste includes a feeding device, a washing and separating device, and a medium matter separating device; the washing and separating device can separate light matter and iron in the recycled aggregates, and the medium matter separating device separates the recycled aggregates after removing light matter and iron into medium matter and heavy matter by means of air separation. The light matter removal system for recycled aggregates of construction waste provided by the present invention can remove light matter and dust in the recycled aggregates through the settings of the feeding device, the washing and separating device, and the medium matter separating device, and separate iron and medium matter in the recycled aggregates, thereby improving the quality of the recycled aggregates.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction waste solid waste recycling treatment, and particularly relates to a light matter removal system for construction waste recycled aggregate and a method for preparing recycled aggregate. Background Art

[0002] Construction waste refers to the muck, waste soil, waste materials, silt and other waste generated during the construction, laying, demolition or renovation of various buildings, structures, pipe networks, etc. by construction, construction units or individuals. At present, a part of the aggregate in construction waste can be recycled and reused, so it is called aggregate.

[0003] A complete construction waste treatment production line includes processes such as crushing, sorting and washing. After the construction waste is crushed, there is a large amount of dust, which enters the sorting process with the crushed construction waste, resulting in a large amount of dust flying during the sorting process, seriously affecting the sorting site environment and the construction experience of the operators.

[0004] Therefore, the existing classification system for construction waste recycled aggregate has the disadvantage of large dust flying at the site. Summary of the Invention

[0005] In view of the above analysis, the present invention aims to provide a light matter removal system for construction waste recycled aggregate and a method for preparing recycled aggregate to solve the problem of large dust flying at the aggregate sorting site in the prior art.

[0006] The object of the present invention is mainly achieved by the following technical solutions:

[0007] On the one hand, the present invention provides a light matter removal system for construction waste recycled aggregate, including a feeding device, a washing and separating device, and a medium matter separating device; the feeding device can drive the recycled aggregate to continuously and evenly enter the washing and separating device, the washing and separating device can separate the light matter and iron in the recycled aggregate, and the medium matter separating device separates the recycled aggregate into medium matter and heavy matter by air separation after removing the light matter and iron.

[0008] Furthermore, the washing and separating device includes a flotation component, a light material conveying component, an aggregate conveying component, an iron material separation component and a wind force collection and recycling component; the light material conveying component is provided on one side of the flotation component, and the aggregate conveying component is provided on the lower part of the flotation component, and the iron material separation component is provided on one side of the inner part of the aggregate conveying component, the wind force collection and recycling component can guide the wind blown out by the medium material separation device to the surface of the aggregate conveying component, and the wind force collection and recycling component can collect part of the wind force, and convert the collected wind force into a force to drive the water surface flow of the flotation component, so that the light material on the water surface of the flotation component floats to the light material conveying component.

[0009] Furthermore, the flotation component includes a feed guide plate and a flotation box; the flotation box is provided with water for separating light substances in the recycled aggregate, the feed guide plate is fixed at the middle of the upper end of the flotation box, and the feed guide plate can guide the recycled aggregate to fall into the middle of the water surface of the flotation box.

[0010] Furthermore, the light material conveying component includes a conveying assembly and a light material receiving box, one end of the conveying assembly is located on one side of the interior of the flotation box, and the conveying assembly can lift the light material floating to the surface of the conveying assembly above the water surface and throw it into the light material receiving box.

[0011] Furthermore, the aggregate conveying component includes a porous conveyor belt, a second conveyor roller and a second motor; the conveyor belt is installed on the outside of the second conveyor roller and the iron material separation component, and the second motor is installed on one side of one of the second conveyor rollers, and the porous conveyor belt includes an inclined part and a horizontal part. When the porous conveyor belt is running, the inclined part can lift the recycled aggregate from the water of the flotation component.

[0012] Furthermore, the iron material separation component includes a third conveying roller, a flexible magnetic plate follower belt and an iron material receiving box; the flexible magnetic plate follower belt is attached to the inner side of the end of the horizontal part of the conveying belt, the outer surface of the flexible magnetic plate follower belt is provided with a protrusion that engages with the holes of the porous conveying belt, and the third conveying roller is provided at both ends of the flexible magnetic plate follower belt, and the iron material receiving box is arranged on the lower side of the flexible magnetic plate follower belt.

[0013] Furthermore, the wind collection and recycling component includes a guide air duct and a wind collection conversion toggle assembly; the guide air duct is surrounded by a plate body, and the guide air duct can collect the wind after the medium material separation device separates the recycled aggregate into medium material and heavy material, and discharges the collected wind through the guide air duct to the inclined part of the aggregate conveying component, blowing off the water droplets on the surface of the recycled aggregate on the aggregate conveying component, and a wind collection conversion toggle assembly is provided inside the guide air duct, and the wind collection conversion toggle assembly can convert part of the wind into a force to stir the water surface.

[0014] Furthermore, the wind collection and conversion driving assembly includes a follower blade, a synchronization assembly and a rotating water-diverting assembly; the follower blade can rotate under the drive of the wind in the guide air duct, and the follower blade can drive the rotating water-diverting assembly to rotate through the synchronization assembly when rotating, and the rotating water-diverting assembly can drive the water surface of the flotation member to flow when rotating.

[0015] Furthermore, the follower blade is a unidirectional rotating blade; the synchronization component includes an active bevel gear, a passive bevel gear, a transmission shaft, an active spur gear, a transmission belt and a passive spur gear; the rotating water-pumping component includes an executive shaft and a water-pumping wheel; the active bevel gear is fixed to the end of the shaft body of the follower blade, the passive bevel gear is meshed with the active bevel gear on one side of the active bevel gear, the passive bevel gear is fixedly connected to one end of the transmission shaft, and the other end of the transmission shaft is fixedly connected to the active spur gear, the active spur gear and the passive spur gear are connected by the transmission belt, the passive spur gear is fixedly connected to the executive shaft, and the water-pumping wheel is installed on the executive shaft.

[0016] Furthermore, the feeding device includes a feed rack, a first motor, a synchronous rotating component, a spiral feeding roller and a feeding pipe; a plurality of horizontally arranged feeding pipes are provided on one side of the lower part of the feed rack, and the feeding pipes are internally installed with the feeding rollers extending to the lower part of the feed rack, and a synchronous rotating component is installed between the feeding rollers, and one side of the synchronous rotating component is fixedly connected to the output shaft of the first motor.

[0017] Furthermore, the first motor is fixedly connected to the unloading rack via a support rod.

[0018] Furthermore, the synchronously rotating component includes a gear disk, a closed rack, a first rod body and a first bearing; one end of each of the plurality of feed rollers is fixed with the first rod body, the first rod body is fixedly connected to the gear disk, the gear disks rotate synchronously through the closed rack, and the first bearing is installed between the first rod body and the unloading rack.

[0019] Furthermore, the medium material separation device includes a blower, a heavy material receiving box and a medium material receiving box; the wind blown by the blower will blow the medium material in the recycled aggregate discharged by the washing and separation device to the medium material receiving box, and the heavy material in the recycled aggregate discharged by the washing and separation device will fall into the heavy material receiving box.

[0020] On the other hand, the present invention also provides a method for preparing recycled aggregate, which uses the above-mentioned light matter removal system for recycled aggregate from construction waste to prepare recycled aggregate.

[0021] Compared with the prior art, the light material removal system and the method for preparing recycled aggregate from construction waste provided by the present invention can achieve at least one of the following beneficial effects:

[0022] 1. Through the setting of feeding device, washing separation device and medium material separation device, light materials and dust in recycled aggregate can be removed, and iron and medium materials in recycled aggregate can be separated to improve the quality of recycled aggregate.

[0023] 2. The flotation components, light material conveying components and aggregate conveying components can remove dust from the aggregates, wash the dust away and enter the water of the flotation components, improve the cleanliness of the construction site, and enhance the construction experience of the operators. At the same time, the system's recycled aggregates from construction waste are flushed with water, which improves the accuracy of color sorting when color sorting and screening copper and aluminum in the recycled aggregates.

[0024] 3. The medium material separation device uses air selection to separate the foam bricks and other low-density materials from the recycled aggregate, and reuses the wind force that completes the separation task. These wind forces can blow off the water droplets on the surface of the recycled aggregate on the aggregate conveying component. At the same time, these wind forces can also make the water surface of the flotation component flow through the wind collection and conversion toggle component, so that the light materials on the water surface of the flotation component float to the light material conveying component.

[0025] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only used to illustrate specific embodiments and are not considered to be limitations of the present invention. Throughout the drawings, the same reference symbols represent the same components. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a structural schematic diagram of a light matter removal system for recycled aggregate from construction waste according to the present invention.

[0028] Figure 2 It is a schematic diagram of the internal structure of the light matter removal system of the construction waste recycled aggregate of the present invention.

[0029] Figure 3 It is a structural schematic diagram of a feeding device of a light matter removal system of construction waste recycled aggregates of the present invention.

[0030] Figure 4 It is a cross-sectional view of a feeding device of a light matter removal system for recycled aggregate from construction waste according to the present invention.

[0031] Figure 5 It is a cross-sectional view of a medium material separation device of a light material removal system for recycled aggregate from construction waste according to the present invention.

[0032] Figure 6 It is a structural schematic diagram of the wind collection conversion toggle assembly of the light material removal system of the construction waste recycled aggregate of the present invention.

[0033] Reference numerals:

[0034] 1. Feeding device, 2. Washing material separation device, 3. Medium material separation device;

[0035] 101. unloading rack, 102. first motor, 103. synchronous rotating member, 104. spiral feeding roller, 105. feeding pipe;

[0036] 201. flotation component, 202. light material conveying component, 203. aggregate conveying component, 204. iron material separation component, 205. wind power collection and reuse component; 2051. one-way rotating fan blade, 2052. driving bevel gear, 2053. passive bevel gear, 2054. transmission shaft, 2055. driving spur gear, 2056. transmission belt, 2057. passive spur gear, 2058. execution shaft, 2059. water wheel;

[0037] 301. Blower, 302. Heavy material receiving box, 303. Medium material receiving box. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. It should be noted that, without conflict, the implementation manners and features in the present disclosure can be combined, separated, interchanged, and / or rearranged with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0039] In the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of components may be exaggerated. When exemplary embodiments can be implemented differently, the specific process sequences may be performed in an order different from that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference numerals denote the same components.

[0040] The terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are also intended to include the plural forms. In addition, when the terms "comprise" and / or "include" and their variants are used in this specification, it indicates the presence of the stated features, wholes, steps, operations, components, assemblies, and / or groups thereof, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, components, assemblies, and / or groups thereof.

[0041] Embodiment 1

[0042] This embodiment provides a light matter removal system for recycled aggregates of construction waste, as Figure 1 shown, including a feeding device 1, a washing and separating device 2, and a medium matter separating device 3; the feeding device 1 can drive the recycled aggregates to continuously and evenly enter the washing and separating device 2, the washing and separating device 2 can separate the light matter and iron in the recycled aggregates, and the medium matter separating device 3 separates the recycled aggregates into medium matter and heavy matter by air separation after removing the light matter and iron.

[0043] The feeding device 1 can receive the recycled aggregates and continuously and evenly feed the recycled aggregates into the washing and separating device 2. The function of the washing and separating device 2 is to wash the aggregates and separate the light matter and iron in the aggregates. The function of the medium matter separating device 3 is to separate the medium matter in the recycled aggregates, such as bricks with lower density, by air separation.

[0044] Compared with the prior art, the light matter removal system for construction waste recycled aggregate in this embodiment, by providing a feeding device 1, a washing and separation device 2 and a medium matter separation device 3, can remove light matter and dust from the recycled aggregate, and separate iron and medium matter from the recycled aggregate, thereby improving the quality of the recycled aggregate.

[0045] In one optional embodiment, Figure 2 As shown, the washing and separating device 2 includes a flotation component 201, a light matter conveying component 202, an aggregate conveying component 203, an iron matter separation component 204 and a wind force collection and reuse component 205; the light matter conveying component 202 is provided on one side of the flotation component 201, and the aggregate conveying component 203 is provided at the lower part of the flotation component 201, and the iron matter separation component 204 is provided on one side of the inner part of the aggregate conveying component 203, and the wind force collection and reuse component 205 can guide the wind blown out by the medium matter separation device 3 to the surface of the aggregate conveying component 203, and the wind force collection and reuse component 205 can collect part of the wind force, and convert the collected wind force into a force to move the water surface flow of the flotation component 201, so that the light matter on the water surface of the flotation component 201 floats to the light matter conveying component 202.

[0046] The recycled aggregate falls into the flotation component 201. Through the flotation method, the dust in the recycled aggregate is dissolved into the water, the light matter in the recycled aggregate floats on the water surface, and the medium matter, medium matter and iron in the recycled aggregate sink to the aggregate conveying component 203. The wind power collection and recycling component 205 makes the water on the water surface flow, so that the light matter floating on the water surface flows to the light matter conveying component 202 through the flow of water.

[0047] The aggregate conveying member 203 is provided with an iron material separation member 204 at the conveying end during conveying. The iron material separation member 204 can attract iron materials and prevent them from falling freely at the conveying end, thereby separating iron from the recycled aggregate.

[0048] The arrangement of the flotation component 201, the light material conveying component 202 and the aggregate conveying component 203 can remove dust from the aggregate, wash the dust away and enter the water of the flotation component 201, thereby improving the cleanliness of the construction site and the construction experience of the operators. At the same time, the construction waste recycled aggregate of this system is flushed with water, which improves the accuracy of color sorting when the copper and aluminum in the recycled aggregate are screened.

[0049] In one of the optional embodiments, the flotation member 201 includes a feed guide plate and a flotation box; the flotation box is provided with water for separating light substances in the recycled aggregate, the feed guide plate is fixed at the middle of the upper end of the flotation box, and the feed guide plate can guide the recycled aggregate to fall into the middle of the water surface of the flotation box.

[0050] The material discharge guide plate guides the recycled aggregate into the middle of the flotation box. The water in the flotation box separates the light matter from the recycled aggregate, and the light matter floats in the middle of the flotation box.

[0051] In one of the optional embodiments, the light material conveying component 202 includes a conveying component and a light material receiving box, one end of the conveying component is located on one side of the interior of the flotation box, and the conveying component can lift the light material floating to the surface of the conveying component above the water surface and throw it into the light material receiving box.

[0052] The conveying component of the light material conveying component 202 is arranged on one side of the water surface. The light material floats toward the light material conveying component 202 under the action of the wind collection and recycling component 205. The light material conveying component 202 lifts the light material above the water surface and throws it into the light material receiving box to achieve the purpose of separating the light material.

[0053] In one of the optional embodiments, the aggregate conveying component 203 includes a porous conveyor belt, a second conveyor roller and a second motor; the conveyor belt is installed on the outside of the second conveyor roller and the iron material separation component 204, and the second motor is installed on one side of one of the second conveyor rollers, and the porous conveyor belt includes an inclined part and a horizontal part. When the porous conveyor belt is running, the inclined part can lift the recycled aggregate from the water of the flotation component 201.

[0054] The recycled aggregate falls on the inclined section of the porous conveyor belt, and the porous conveyor belt lifts the recycled aggregate from the water and conveys it to the end of the porous conveyor belt.

[0055] In one of the optional embodiments, the iron material separation component 204 includes a third conveying roller, a flexible magnetic plate follower belt and an iron material receiving box; the flexible magnetic plate follower belt is attached to the inner side of the end of the horizontal part of the conveying belt, the outer surface of the flexible magnetic plate follower belt is provided with a protrusion that engages with the holes of the porous conveying belt, and the third conveying roller is provided at both ends of the flexible magnetic plate follower belt, and the iron material receiving box is arranged on the lower side of the flexible magnetic plate follower belt.

[0056] When the recycled aggregate is conveyed to the end of the porous conveyor belt, the flexible magnetic plate attracts the iron matter in the recycled aggregate and sucks it onto the surface of the porous conveyor belt. The porous conveyor belt throws out the medium and heavy materials, and the iron matter is sucked onto the lower surface of the porous conveyor belt. When the iron matter leaves the attraction range of the flexible magnetic plate, it automatically falls into the iron material receiving box.

[0057] In one optional embodiment, the wind power collection and reuse component 205 includes a guide air duct and a wind power collection conversion toggle assembly; Figure 2As shown, the guide air duct is surrounded by a plate body, and the guide air duct can collect the wind after the medium material separation device 3 separates the recycled aggregate into medium material and heavy material, and discharges the collected wind to the inclined part of the aggregate conveying component 203 through the guide air duct, so as to blow off the water droplets on the surface of the recycled aggregate on the aggregate conveying component 203. A wind collection conversion toggle assembly is arranged inside the guide air duct, and the wind collection conversion toggle assembly can convert part of the wind into a force to move the water surface. The air flow path is shown in FIG. Figure 2 The arrow in the .

[0058] The guide air duct reuses the wind force that completes the separation task of the medium material separation device 3. These wind forces can blow off the water droplets on the surface of the recycled aggregate on the aggregate conveying component 203. At the same time, these wind forces can also make the water surface of the flotation component 201 flow through the wind collection and conversion toggle component, so that the light matter on the water surface of the flotation component 201 floats to the light matter conveying component 202.

[0059] In one optional embodiment, Figure 6 As shown, the wind power collection and conversion driving assembly includes a follower blade, a synchronous assembly and a rotating water-displacing assembly; the follower blade can rotate under the drive of the wind in the guide air duct, and the follower blade can drive the rotating water-displacing assembly to rotate through the synchronous assembly when rotating, and the rotating water-displacing assembly can drive the water surface of the flotation member 201 to flow when rotating.

[0060] In one optional embodiment, Figure 6 As shown, the follower blade is a unidirectional rotating blade 2051; the synchronization component includes an active bevel gear 2052, a passive bevel gear 2053, a transmission shaft 2054, an active spur gear 2055, a transmission belt 2056 and a passive spur gear 2057; the rotating water-pumping component includes an executive shaft 2058 and a water-pumping wheel 2059; the active bevel gear 2052 is fixed to the end of the shaft body of the follower blade, the passive bevel gear 2053 is meshed on one side of the active bevel gear 2052, the passive bevel gear 2053 is fixedly connected to one end of the transmission shaft 2054, and the other end of the transmission shaft 2054 is fixedly connected to the active spur gear 2055, the active spur gear 2055 and the passive spur gear 2057 are connected through the transmission belt 2056, the passive spur gear 2057 is fixedly connected to the executive shaft 2058, and the water-pumping wheel 2059 is installed on the executive shaft 2058.

[0061] In one of the optional embodiments, the transmission shaft 2054 and the execution shaft 2058 are connected to the outer casing of the material washing and separation device 2 via bearings.

[0062] In one of the optional embodiments, the feeding device 1 includes a feed rack 101, a first motor 102, a synchronous rotating component 103, a spiral feeding roller 104 and a feeding pipe 105; a plurality of horizontally arranged feeding pipes 105 are provided on one side of the lower part of the feed rack 101, and the feeding pipe 105 is internally installed with the feeding roller extending to the lower part of the feed rack 101, and a synchronous rotating component 103 is installed between the feeding rollers, and one side of the synchronous rotating component 103 is fixedly connected to the output shaft of the first motor 102.

[0063] In one optional implementation manner, the first motor 102 is fixedly connected to the unloading rack 101 via a support rod.

[0064] In one optional embodiment, Figure 3 and Figure 4 As shown, the synchronous rotating component 103 includes a gear plate, a closed rack, a first rod body and a first bearing; one end of each of the plurality of feed rollers is fixed with the first rod body, the first rod body is fixedly connected to the gear plate, the gear plates rotate synchronously through the closed rack, and the first bearing is installed between the first rod body and the unloading rack 101.

[0065] In one optional embodiment, Figure 5 As shown, the medium material separation device 3 includes a blower 301, a heavy material receiving box 302 and a medium material receiving box 303; the wind blown by the blower 301 will blow the medium material in the recycled aggregate discharged by the washing and separation device 2 to the medium material receiving box 303, and the heavy material in the recycled aggregate discharged by the washing and separation device 2 falls into the heavy material receiving box 302.

[0066] The medium material separation device 3 uses an air selection method to separate the foam bricks and other low-density materials in the recycled aggregate from the recycled aggregate, and at the same time reuses the wind force that completes the separation task. These wind forces can blow off the water droplets on the surface of the recycled aggregate on the aggregate conveying component 203. At the same time, these wind forces can also make the water surface of the flotation component 201 flow through the wind collection and conversion toggle component, so that the light materials on the water surface of the flotation component 201 float to the light material conveying component 202.

[0067] Embodiment 2

[0068] This embodiment provides a method for preparing recycled aggregate, using the light matter removal system of construction waste recycled aggregate in the first embodiment, and the steps include:

[0069] Step 1: crush the construction waste;

[0070] The crushed construction waste becomes recycled aggregate.

[0071] Step 2: Cleaning the recycled aggregate;

[0072] The recycled aggregate falls into the water of the flotation component 201 , the sand and dust on the surface of the recycled aggregate are removed, the light materials in the recycled aggregate float on the water surface, and the medium materials, heavy materials and iron in the recycled aggregate fall on the aggregate conveying component 203 .

[0073] Step 3: Separation of iron from recycled aggregate;

[0074] Step 4: The medium material separation device 3 uses air separation to separate the recycled aggregate into medium materials and heavy materials;

[0075] Step 5: Reuse the wind power that has completed the separation task and collect the light materials into the light material receiving box;

[0076] The medium material separation device 3 uses an air selection method to separate the foam bricks and other low-density materials in the recycled aggregate from the recycled aggregate, and at the same time reuses the wind force that completes the separation task. These wind forces can blow off the water droplets on the surface of the recycled aggregate on the aggregate conveying component 203. At the same time, these wind forces can also make the water surface of the flotation component 201 flow through the wind force collection and conversion toggle component, so that the light materials on the water surface of the flotation component 201 float to the light material conveying component 202, and the light material conveying component 202 puts the light materials into the light material receiving box.

[0077] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A light material removal system for recycled aggregate from construction waste, characterized in that: The invention comprises a feeding device (1), a washing and separating device (2), and a medium material separating device (3); the feeding device (1) can drive the recycled aggregate to enter the washing and separating device (2) evenly and continuously; the washing and separating device (2) can separate the light materials and iron in the recycled aggregate; and the medium material separating device (3) separates the recycled aggregate into medium materials and heavy materials by air separation after removing the light materials and iron; The washing and separation device (2) comprises a flotation component (201), a light matter conveying component (202), an aggregate conveying component (203), an iron matter separation component (204) and a wind force collection and reuse component (205); the light matter conveying component (202) is provided on one side of the flotation component (201), the aggregate conveying component (203) is provided at the lower part of the flotation component (201), the iron matter separation component (204) is provided on one side of the inner part of the aggregate conveying component (203), the wind force collection and reuse component (205) is capable of guiding the wind blown out by the medium matter separation device (3) to the surface of the aggregate conveying component (203), and the wind force collection and reuse component (205) is capable of collecting part of the wind force and converting the collected wind force into a force for moving the water surface flow of the flotation component (201), so that the light matter on the water surface of the flotation component (201) floats to the light matter conveying component (202); The wind force collection and recycling component (205) comprises a guide air duct and a wind force collection conversion and toggling assembly; the guide air duct can discharge the collected wind to the inclined part of the aggregate conveying component (203) to blow off the water droplets on the surface of the recycled aggregate on the aggregate conveying component (203); the wind force collection conversion and toggling assembly is arranged inside the guide air duct, and the wind force collection conversion and toggling assembly can convert part of the wind force into a force to toggle the water surface; The wind power collection conversion and driving assembly comprises a follower blade, a synchronous assembly and a rotating water-displacing assembly; the follower blade can rotate under the drive of the wind in the guide air duct, and the follower blade can drive the rotating water-displacing assembly to rotate through the synchronous assembly when rotating, and the rotating water-displacing assembly can drive the water surface of the flotation member (201) to flow when rotating; The synchronous component comprises an active bevel gear (2052), a passive bevel gear (2053), a transmission shaft (2054), an active spur gear (2055), a transmission belt (2056) and a passive spur gear (2057); the rotating water-displacing component comprises an execution shaft (2058) and a water-displacing wheel (2059) arranged on the execution shaft (2058); the active bevel gear (2052) is fixedly arranged at the end of the shaft body of the follower blade, one side of the active bevel gear (2052) is meshed with the passive bevel gear (2053), the passive bevel gear (2053) and the active spur gear (2055) are fixedly connected to the two ends of the transmission shaft (2054), and the active spur gear (2055) and the passive spur gear (2057) are connected via the transmission belt (2056).

2. The light material removal system of construction waste recycled aggregate according to claim 1 is characterized in that: The flotation component (201) comprises a material discharge guide plate and a flotation box; the flotation box is provided with water for separating light substances in the recycled aggregate; the material discharge guide plate is fixed to the middle of the upper end of the flotation box; the material discharge guide plate can guide the recycled aggregate to fall into the middle of the water surface of the flotation box.

3. The light material removal system of construction waste recycled aggregate according to claim 2 is characterized in that: The light matter conveying member (202) comprises a conveying component and a light matter receiving box, one end of the conveying component is located on one side of the interior of the flotation box, and the conveying component can lift the light matter floating on the surface of the conveying component above the water surface and throw it into the light matter receiving box.

4. The light material removal system of construction waste recycled aggregate according to claim 3 is characterized in that: The aggregate conveying member (203) comprises a porous conveyor belt, a second conveyor roller and a second motor; the conveyor belt is installed on the outer sides of the second conveyor roller and the iron material separation member (204), and the second motor is installed on one side of one of the second conveyor rollers; the porous conveyor belt comprises an inclined portion and a horizontal portion, and when the porous conveyor belt is in operation, the inclined portion can lift the recycled aggregate from the water in the flotation member (201).

5. The light material removal system of construction waste recycled aggregate according to claim 4 is characterized in that: The iron material separation component (204) comprises a third conveying roller, a flexible magnetic plate follower belt and an iron material receiving box; the flexible magnetic plate follower belt is attached to the inner side of the end of the horizontal part of the conveying belt, the outer surface of the flexible magnetic plate follower belt is provided with a protrusion that engages with the holes of the porous conveying belt, and the third conveying roller is provided at both ends of the flexible magnetic plate follower belt, and the iron material receiving box is arranged on the lower side of the flexible magnetic plate follower belt.

6. The light material removal system of construction waste recycled aggregate according to claim 1 is characterized in that: The feeding device (1) comprises a feeding frame (101), a first motor (102), a synchronous rotating component (103), a spiral feeding roller (104) and a feeding pipe (105); a plurality of horizontally arranged feeding pipes (105) are provided on one side of the lower part of the feeding frame (101), the feeding rollers extending to the lower part of the feeding frame (101) are installed inside the feeding pipes (105), a synchronous rotating component (103) is installed between the feeding rollers, and one side of the synchronous rotating component (103) is fixedly connected to the output shaft of the first motor (102).

7. The light material removal system of construction waste recycled aggregate according to claim 1 is characterized in that: The medium material separation device (3) comprises a blower (301), a heavy material receiving box (302) and a medium material receiving box (303); the wind blown by the blower (301) will blow the medium material in the recycled aggregate discharged by the washing and separation device (2) to the medium material receiving box (303), and the heavy material in the recycled aggregate discharged by the washing and separation device (2) will fall into the heavy material receiving box (302).

8. A method for preparing recycled aggregate, characterized in that: Removing light matter from recycled aggregate using the system for removing light matter from recycled aggregate from construction waste as described in any one of claims 1 to 7; In the process of removing light matter from the recycled aggregate, the wind force collection and recycling component (205) is used to guide the wind blown out by the medium matter separation device (3) to the surface of the aggregate conveying component (203), so as to blow off the water droplets on the surface of the recycled aggregate on the aggregate conveying component (203); and the wind force collection and recycling component (205) converts the collected wind force into a force to move the water surface flow of the flotation component (201), so that the light matter on the water surface of the flotation component (201) floats to the light matter conveying component (202).

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