Building waste reclaimed material automatic sorting equipment and method with fluorescence recognition feedback function

Abstract

The invention belongs to the technical field of automatic sorting, and particularly relates to building waste reclaimed material automatic sorting equipment and method.The equipment comprises a vibrating feeder, a plurality of funnel-shaped material distribution grooves are formed below an ultrasonic atomization spraying device side by side, a belt conveyor is used for conveying building waste crushed materials, and the vibrating feeder is used for feeding the building waste crushed materials; a fluorescence detection box is arranged above the belt conveyor, connecting columns in one-to-one correspondence with the funnel-shaped material distribution grooves are arranged in the fluorescence detection box, ultraviolet lamps are arranged on the connecting columns, and photosensitive sensors are arranged on the rear sides of the ultraviolet lamps. According to the invention, through cooperation of fluorescence recognition feedback and high-pressure gas, building waste crushed materials are automatically sorted, building waste materials of different substances with similar density, size, color, shape and the like can be finely sorted, and the device has the characteristics of sensitive reaction, accurate distinguishing, high precision and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic sorting, and in particular relates to an automatic sorting device and method for construction waste recycled materials using fluorescence recognition feedback. Background Art

[0002] The traditional construction waste treatment process can be divided into three major steps: crushing, sorting and recycling. The crushing process is relatively complete, and the main difficulty lies in the sorting technology. Traditional sorting methods such as screening, air separation, magnetic separation, flotation, etc., have poor sensitivity, low discrimination accuracy, and cannot separate crushed materials with similar physical and chemical properties. In order to recycle valuable materials in construction waste, different materials need to be finely separated.

[0003] There are patented technologies for the automatic fine sorting of construction waste. For example, the invention patent with publication number CN108837936A is called a method for automatic sorting of construction waste. This patent uses machine vision to identify materials based on their color and shape characteristics to obtain identification data; the identification data is compared with pre-stored data to determine the type of material to be sorted, and the corresponding material guide gate is activated for sorting. The sorting principle of this method is color and shape differences, so it is difficult to accurately separate materials with similar shapes and colors, and the reaction rate and accuracy are difficult to meet the sorting requirements. Summary of the invention

[0004] In view of the above problems, the present invention provides a construction waste recycled material automatic sorting device and method with fluorescence recognition feedback.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic sorting device for recycled building waste with fluorescence recognition feedback comprises a vibrating feeder, a dust removal device is installed on the feeding side of the vibrating feeder for removing dust attached to crushed building waste, an ultrasonic atomizing spray device is arranged at the outlet of the vibrating feeder for spraying fluorescent dye on the crushed building waste falling down, a plurality of funnel-shaped distributing troughs are arranged side by side below the ultrasonic atomizing spray device for receiving the crushed building waste falling from the vibrating feeder and making the crushed building waste evenly arranged and falling onto the belt conveyor below, the belt conveyor is used to convey the crushed building waste, a fluorescent detection box is arranged above the belt conveyor, and a plurality of funnel-shaped distributing troughs are arranged inside the fluorescent detection box. A connecting column corresponding to the grooves one by one is arranged on the connecting column. A photosensitive sensor is arranged on the rear side of the ultraviolet lamp for receiving the fluorescence emitted by the fluorescent dye after being excited by ultraviolet light and recording the intensity of the fluorescence. A funnel-shaped discharging trough corresponding to the multiple funnel-shaped feeding troughs is arranged at the outlet of the belt conveyor. An injection head is arranged below the funnel-shaped discharging trough. The injection head is connected to the high-pressure air pump through an air supply pipe with an electromagnetic valve. A first collecting bin and a second collecting bin are arranged on the rear side of the belt conveyor for collecting construction waste sorting materials with different falling trajectories. The photosensitive sensor and the electromagnetic valve are both connected to a controller. The controller is used to receive the signal detected by the photosensitive sensor and control the on and off of the corresponding electromagnetic valve according to the signal.

[0007] Furthermore, a partition plate is obliquely arranged between the first material collecting bin and the second material collecting bin to separate the construction waste sorting materials with different falling trajectories, thereby improving the sorting accuracy.

[0008] Furthermore, the dust removal device includes a dust removal box, which is fixedly mounted on the frame of the vibrating feeder. A plurality of dust removal nozzles are arranged on the side wall of the dust removal box, and the dust removal nozzles are connected to the air outlet of the air compressor through pipelines. A dust collector is fixedly arranged on the upper part of the dust removal box, and the dust collector is connected to the interior of the dust removal box.

[0009] Furthermore, a regulating valve is provided at the lower end of the funnel-shaped material distribution trough for adjusting the size of the discharge opening of the funnel-shaped material distribution trough.

[0010] Furthermore, light-proof rubber curtains are provided at the entrance and exit of the fluorescence detection box.

[0011] Furthermore, the multiple funnel-shaped material distribution troughs are arranged to be inclined downward at 45 degrees.

[0012] The invention discloses an automatic sorting method for recycled building waste materials with fluorescent recognition feedback, comprising the following steps: separating crushed building waste materials according to different particle sizes, uniformly conveying the crushed building waste materials separated according to the particle sizes to a vibrating feeder, removing dust attached to the crushed building waste materials by the cooperation of the vibrating feeder and a dust removal device, and making the crushed building waste materials more uniformly arranged after passing through the vibrating feeder, and then dropping the crushed building waste materials from the vibrating feeder, spraying the crushed building waste materials with fluorescent dyes in all directions by an ultrasonic atomizing spraying device during the dropping process, dropping the crushed building waste materials into a funnel-shaped distribution trough after being sprayed with fluorescent dyes, and uniformly dropping the crushed building waste materials onto a belt conveyor through the funnel-shaped distribution trough, and vibrating the funnel-shaped distribution trough together with the vibrating feeder to prevent the crushed building waste materials from accumulating in the funnel-shaped distribution trough, and adjusting the opening of the regulating valve to adjust the discharge speed of the crushed building waste materials, thereby ensuring the smooth flow of the crushed building waste materials. To ensure uniform arrangement of crushed construction waste on the belt conveyor, during the conveying process of the belt conveyor, the crushed construction waste passes through a fluorescence detection box and uses an ultraviolet lamp to make the fluorescent dye on the surface of the crushed construction waste fluoresce. Based on the different adsorption capacities of crushed construction waste materials of different materials for fluorescent dyes, the intensity of the fluorescence is detected by a photosensitive sensor, and the detection signal is transmitted to the controller. Then the belt conveyor continues to convey the crushed construction waste, and finally the crushed construction waste falls into the corresponding funnel-shaped discharge trough and falls from the funnel-shaped discharge trough. The controller recognizes the signal detected by the photosensitive sensor to recognize the material of the crushed construction waste, and controls the corresponding solenoid valve to close according to the time difference when the crushed construction waste is detected by the photosensitive sensor to fall from the funnel-shaped discharge trough, thereby allowing the crushed construction waste of the corresponding material to freely fall into the first collection bin or be blown into the second collection bin by high-pressure gas.

[0013] Furthermore, the fluorescent dye is 10 mg·L -1 of fluorescein acetate polyethylene glycol solution.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present invention automatically sorts broken construction waste materials through fluorescent recognition feedback in combination with high-pressure gas, and can finely sort construction waste materials of different substances with similar density, size, color, shape, etc., and has the characteristics of sensitive response, accurate resolution, high precision, etc.

[0016] The fluorescent dye selected by the present invention is a fluorescein acetate polyethylene glycol solution, which has the characteristics of low price, low toxicity and degradability. After the fluorescent dye is sprayed, the fluorescence intensity of the material gradually weakens over time, and the fluorescent dye degrades naturally, without the need for subsequent treatment, and is green and environmentally friendly.

[0017] The present invention uses an ultrasonic atomizing spray device to perform ultrasonic atomizing spraying on crushed construction waste materials, which has the advantages of uniform spraying and controllable flow rate; ultrasonic spraying can greatly reduce paint splashing caused by the spraying process, thereby greatly reducing paint waste; the ultrasonic atomizing nozzle is not easy to clog, which can reduce maintenance costs and repair time.

[0018] The present invention can adjust the feeding speed of materials through a vibrating feeder and a belt conveyor, complete the fluorescent dye spraying of the crushed construction waste materials during the transmission process of the crushed construction waste materials, and through the regulating valve at the lower end of the funnel-shaped feed chute and the speed adjustment of the belt conveyor, the crushed construction waste materials can be evenly distributed at equal distances, and the fluorescence measurement and sorting of materials are more accurate. The design ensures the system coordination and precise sorting of "spraying-measuring-selecting".

[0019] Compared with the traditional sorting method, the present invention adopts the photoelectric separation technology of fluorescence recognition feedback and high-pressure gas screening. The method and system are low-cost, sensitive and do not require additional maintenance, and have good practical production applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 The figure is a schematic diagram of the installation of the ultraviolet lamp and the photosensor of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the dust removal device of the present invention;

[0024] In the figure, there are a vibrating feeder 1, a dust removal device 2, an ultrasonic atomizing spray device 3, a funnel-shaped material distribution trough 4, a belt conveyor 5, a fluorescent detection box 6, a connecting column 7, an ultraviolet lamp 8, a photosensitive sensor 9, a funnel-shaped material discharge trough 10, a nozzle 11, a first material collection bin 12, a second material collection bin 13, a material partition plate 14, a dust removal box 201, a dust removal nozzle 202, and a dust collector 203. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical solution of the present invention, the present invention is further described below through embodiments.

[0026] like Figures 1 to 4As shown, an automatic sorting equipment for recycled building waste materials with fluorescence recognition feedback comprises a vibrating feeder 1, a dust removal device 2 is installed on the feeding side of the vibrating feeder 1 for removing dust attached to crushed building waste materials, an ultrasonic atomizing spraying device 3 is arranged at the outlet of the vibrating feeder 1 for spraying fluorescent dye on the crushed building waste materials falling down, a plurality of funnel-shaped distributing troughs 4 are arranged side by side below the ultrasonic atomizing spraying device 3, a regulating valve is arranged at the lower end of the funnel-shaped distributing trough 4 for adjusting the size of the discharging opening of the funnel-shaped distributing trough 4 for receiving the crushed building waste materials falling from the vibrating feeder 1 and making the crushed building waste materials evenly arranged and falling onto the belt conveyor 5 below, the belt conveyor 5 being used to convey the crushed building waste materials, a fluorescent detection box 6 is arranged above the belt conveyor 5, opaque rubber curtains are arranged at the inlet and outlet of the fluorescent detection box 6, and connecting columns corresponding to the plurality of funnel-shaped distributing troughs 4 are arranged inside the fluorescent detection box 6. 7, an ultraviolet lamp 8 is arranged on the connecting column 7, and a photosensitive sensor 9 is arranged at the rear side of the ultraviolet lamp 8, which is used to receive the fluorescence emitted by the fluorescent dye after being excited by ultraviolet light and record the intensity of the fluorescence. A funnel-shaped discharging trough 10 corresponding to a plurality of funnel-shaped feeding troughs 4 is arranged at the outlet of the belt conveyor 5, and the plurality of funnel-shaped discharging troughs 10 are arranged to be inclined downward at 45 degrees, and an air jet 11 is arranged below the funnel-shaped discharging trough 10, and the air jet 11 is connected to the high pressure air pump 11 through an air supply pipe with an electromagnetic valve. A compressed air pump is connected, and a first collecting bin 12 and a second collecting bin 13 are arranged on the rear side of the belt conveyor 5 for collecting construction waste sorting materials with different falling trajectories. The photosensitive sensor 9 and the solenoid valve are connected to the controller. The controller is used to receive the signal detected by the photosensitive sensor 9 and control the on and off of the corresponding solenoid valve according to the signal. A partition plate 14 is obliquely arranged between the first collecting bin 12 and the second collecting bin 13 for separating construction waste sorting materials with different falling trajectories to improve the sorting accuracy.

[0027] The dust removal device 2 includes a dust removal box 201, which is fixedly installed on the frame of the vibrating feeder 1. A plurality of dust removal nozzles 202 are arranged on the side wall of the dust removal box 201. The dust removal nozzles 202 are connected to the air outlet of the air compressor through pipelines. A dust collector 203 is fixedly arranged on the upper part of the dust removal box 201, and the dust collector 203 is connected to the inside of the dust removal box 201.

[0028] A method for automatically sorting recycled building waste materials with fluorescent recognition feedback comprises the following steps: separating crushed building waste materials according to different particle sizes, uniformly conveying the crushed building waste materials separated according to the particle sizes to a vibrating feeder 1, removing dust attached to the crushed building waste materials by the cooperation of the vibrating feeder 1 and a dust removal device 2, and making the crushed building waste materials more evenly arranged after passing through the vibrating feeder 1, and then dropping the crushed building waste materials from the vibrating feeder 1, and spraying the crushed building waste materials with fluorescent dye in all directions by an ultrasonic atomizing spraying device 3 during the dropping process, wherein the fluorescent dye is 10 mg·L -1 The acetic acid polyethylene glycol fluorescein solution is sprayed with fluorescent dye, and the crushed construction waste falls into the funnel-shaped distribution trough 4 after being sprayed with fluorescent dye, and evenly falls onto the belt conveyor 5 through the funnel-shaped distribution trough 4. The funnel-shaped distribution trough 4 vibrates along with the vibrating feeder 1, which can prevent the crushed construction waste from accumulating in the funnel-shaped distribution trough 4. The discharge speed of the crushed construction waste is adjusted by adjusting the opening of the regulating valve, thereby ensuring the uniform arrangement of the crushed construction waste on the belt conveyor 5. During the conveying process of the belt conveyor 5, the crushed construction waste passes through the fluorescence detection box 6, and the fluorescent dye on the surface of the crushed construction waste emits fluorescence through the ultraviolet lamp 8. The adsorption capacity of the crushed construction waste of different materials to the fluorescent dye is determined by the fluorescence detection box 6. Differently, the intensity of fluorescence is detected by the photosensitive sensor 9, and the detection signal is transmitted to the controller, and then the belt conveyor 5 continues to transport the crushed construction waste materials, and finally the crushed construction waste materials fall into the corresponding funnel-shaped discharge trough 10 and fall from the funnel-shaped discharge trough 10. The controller recognizes the signal detected by the photosensitive sensor 9 to realize the recognition of the material of the crushed construction waste materials, and controls the corresponding solenoid valve to close according to the time difference when the crushed construction waste materials are detected by the photosensitive sensor 9 to fall from the funnel-shaped discharge trough 10, thereby allowing the crushed construction waste materials of the corresponding material to freely fall into the first collecting bin 12 or be blown into the second collecting bin 13 by high-pressure gas.

[0029] The above shows and describes the main features and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic sorting device for recycled construction waste with fluorescence recognition feedback, characterized in that: The invention comprises a vibrating feeder (1), wherein a dust removal device (2) is installed on the feeding side of the vibrating feeder (1) for removing dust attached to crushed construction waste; an ultrasonic atomizing spray device (3) is arranged at the outlet of the vibrating feeder (1) for spraying fluorescent dye on the crushed construction waste falling down; a plurality of funnel-shaped distribution troughs (4) are arranged side by side below the ultrasonic atomizing spray device (3) for receiving the crushed construction waste falling from the vibrating feeder (1) and making the crushed construction waste evenly arranged and falling onto a belt conveyor (5) below; the belt conveyor (5) is used to convey the crushed construction waste; a fluorescent detection box (6) is arranged above the belt conveyor (5); a connecting column (7) corresponding to the plurality of funnel-shaped distribution troughs (4) is arranged inside the fluorescent detection box (6); An ultraviolet lamp (8) is arranged on the connecting column (7), and a photosensitive sensor (9) is arranged on the rear side of the ultraviolet lamp (8) for receiving the fluorescence emitted by the fluorescent dye after being excited by ultraviolet light and recording the intensity of the fluorescence. A funnel-shaped discharge trough (10) corresponding to a plurality of funnel-shaped material distribution troughs (4) is arranged at the outlet of the belt conveyor (5), and a nozzle (11) is arranged below the funnel-shaped discharge trough (10). The nozzle (11) is connected to a high-pressure air pump through an air supply pipe with an electromagnetic valve. A first collecting bin (12) and a second collecting bin (13) are arranged on the rear side of the belt conveyor (5) for collecting construction waste sorting materials with different falling trajectories. The photosensitive sensor (9) and the electromagnetic valve are both connected to a controller, and the controller is used to receive the signal detected by the photosensitive sensor (9) and control the opening and closing of the corresponding electromagnetic valve according to the signal.

2. According to claim 1, the automatic sorting equipment for construction waste recycled materials with fluorescence recognition feedback is characterized by: A material separator (14) is obliquely arranged between the first material collecting bin (12) and the second material collecting bin (13) to separate construction waste sorting materials with different falling trajectories, thereby improving sorting accuracy.

3. The automatic sorting equipment for recycled construction waste with fluorescence recognition feedback according to claim 2 is characterized by: The dust removal device (2) comprises a dust removal box (201), the dust removal box (201) is fixedly mounted on a frame of a vibrating feeder (1), a plurality of dust removal nozzles (202) are arranged on the side wall of the dust removal box (201), the dust removal nozzles (202) are connected to the air outlet of an air compressor via a pipeline, a dust collector (203) is fixedly arranged on the upper part of the dust removal box (201), and the dust collector (203) is connected to the inside of the dust removal box (201).

4. The automatic sorting equipment for recycled construction waste with fluorescence recognition feedback according to claim 3 is characterized by: A regulating valve is provided at the lower end of the funnel-shaped material distribution trough (4) for adjusting the size of the discharge opening of the funnel-shaped material distribution trough (4).

5. The automatic sorting equipment for recycled construction waste with fluorescence recognition feedback according to claim 4 is characterized by: Light-proof rubber curtains are provided at the entrance and exit of the fluorescence detection box (6).

6. The automatic sorting equipment for recycled construction waste with fluorescence recognition feedback according to claim 5 is characterized by: The multiple funnel-shaped material distribution troughs (4) are arranged to be inclined downward at 45 degrees.

7. A method for automatically sorting recycled construction waste materials based on the device of claim 6 with fluorescence recognition feedback, characterized in that: The following steps are involved: The crushed construction waste is sorted according to different particle sizes, and the crushed construction waste that has been sorted according to the particle sizes is uniformly conveyed to a vibrating feeder (1). The dust attached to the crushed construction waste is removed by the cooperation of the vibrating feeder (1) and a dust removal device (2). After the crushed construction waste passes through the vibrating feeder (1), its arrangement becomes more uniform. Then, the crushed construction waste falls from the vibrating feeder (1). During the falling process, the crushed construction waste is sprayed with fluorescent dye in all directions by an ultrasonic atomizing spraying device (3). After the crushed construction waste is sprayed with fluorescent dye, it falls into a funnel-shaped distribution trough (4), and uniformly falls onto a belt conveyor (5) through the funnel-shaped distribution trough (4). The funnel-shaped distribution trough (4) vibrates along with the vibrating feeder (1), so as to prevent the crushed construction waste from accumulating in the funnel-shaped distribution trough (4). By adjusting the opening of the regulating valve, the discharge speed of the crushed construction waste is adjusted, thereby ensuring that the crushed construction waste is deposited on the belt conveyor (5). The construction waste crushed materials are arranged evenly. During the conveying process of the belt conveyor (5), the construction waste crushed materials pass through the fluorescence detection box (6). The fluorescent dye on the surface of the construction waste crushed materials emits fluorescence through the ultraviolet lamp (8). Based on the different adsorption capacities of the construction waste crushed materials of different materials for the fluorescent dye, the intensity of the fluorescence is detected by the photosensitive sensor (9), and the detection signal is transmitted to the controller. Then the belt conveyor (5) continues to convey the construction waste crushed materials. Finally, the construction waste crushed materials fall into the corresponding funnel-shaped discharge trough (10) and fall from the funnel-shaped discharge trough (10). The controller recognizes the material of the construction waste crushed materials by identifying the signal detected by the photosensitive sensor (9), and controls the corresponding electromagnetic valve to close according to the time difference between the construction waste crushed materials being detected by the photosensitive sensor (9) and falling from the funnel-shaped discharge trough (10), thereby allowing the construction waste crushed materials of the corresponding material to fall freely into the first collection bin (12) or be blown into the second collection bin (13) by high-pressure gas.

8. The method for automatically sorting recycled materials from construction waste with fluorescence recognition feedback according to claim 7 is characterized by: The fluorescent dye is 10 mg·L -1 of fluorescein acetate polyethylene glycol solution.

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