Impurity removal device for recycled aggregate

Abstract

The utility model discloses a recycled aggregate impurity removal device, and relates to the technical field of recycled aggregate impurity removal, the recycled aggregate impurity removal device comprises a screening box with a feeding hopper mounted at the top, a magnetic separation device is mounted at the joint of the feeding hopper and the screening box, and a multi-stage screening assembly is arranged in an inner cavity of the screening box. Through cooperative arrangement of the dust removal barrel, a second motor, fan blades, a filter bag and other structures, fine aggregate passes through the dust removal barrel before being discharged through a discharging pipe, the fan blades can be driven by the second motor installed in one end of the dust removal barrel to rotate at a high speed, dust in the aggregate is blown into the filter bag, and dust collection work is achieved; the aggregate after dust removal continues to fall down and is discharged through a discharging pipe installed at the bottom of the dust removal cylinder, fine dust is collected through the dust removal cylinder and the filter bag before the aggregate is discharged, and the problems that dust in the aggregate is prone to being diffused into surrounding air during discharging of an existing aggregate impurity removal device, air pollution is caused, and the dust removal effect is poor are avoided as much as possible. And damage to the body of a worker can be caused.

Description

Technical Field

[0001] The present application relates to the technical field of recycled aggregate impurity removal, and in particular to a recycled aggregate impurity removal device. Background Art

[0002] With the rapid development of the construction industry, a large amount of construction waste is generated, many of which can be converted into recycled aggregates through crushing, screening and other processes, and used to prepare building materials such as recycled concrete. However, recycled aggregates often contain various impurities, such as metals, plastics, wood chips, etc. These impurities seriously affect the quality and performance of recycled aggregates.

[0003] The utility model patent with announcement number CN205933644U proposes: a recycled aggregate impurity removal device, which is mainly composed of a feed port, a material conveyor belt, a device body, a high-pressure airflow injection device, an organic matter discharge channel, a recycled aggregate discharge channel and an electromagnetic adsorption device; a feed port is arranged at the upper left end of the device body, a material conveyor belt is arranged in the upper part of the device body, the right end of the device body is a discharge channel, a high-pressure airflow injection device is arranged below the discharge channel, the discharge channel includes an organic matter discharge channel and a recycled aggregate discharge channel, the recycled aggregate discharge channel is arranged on the right side of the device body, the organic matter discharge channel is arranged above the recycled aggregate discharge channel, a number of electromagnetic adsorption devices are arranged on the outside of the recycled aggregate discharge channel, and the wind pressure of the high-pressure airflow injection device has an adjustable function.

[0004] The above device cannot remove fine dust in the aggregate during the process of removing impurities from the aggregate, resulting in the dust easily spreading into the surrounding air during discharge, which not only pollutes the air but also causes damage to the health of the workers. Utility Model Content

[0005] The utility model aims to solve or at least alleviate the problem that dust in the aggregates of the existing aggregate impurity removal device is easily diffused into the surrounding air during discharging, which not only pollutes the air but also causes damage to the health of the workers.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A recycled aggregate impurity removal device comprises a screening box with a feed hopper installed on the top, a magnetic separation device is installed at the connection between the feed hopper and the screening box, a multi-stage screening assembly is arranged in the inner cavity of the screening box, a retarder pipe connected to the inner cavity of the screening box is fixedly connected to the bottom of the screening box, a dust removal device is arranged at the end of the retarder pipe away from the screening box, the dust removal device comprises a dust removal cylinder horizontally installed at the bottom end of the retarder pipe, a second motor is installed in the inner cavity of one end of the dust removal cylinder, a fan blade is fixedly connected to the output end of the second motor, the other end of the dust removal cylinder extends outward to form a joint, a filter bag is detachably connected to the joint, and a discharge pipe opposite to the retarder pipe is also fixedly connected to the lower surface of the dust removal cylinder.

[0008] By adopting the above technical scheme, when in use, the user first introduces the aggregate into the feed hopper. The aggregate falls by gravity and first passes through the magnetic roller to absorb metal impurities, removes the metal impurities, and then falls into the screening box. It is screened by multiple vibrating screens arranged in the screening box to realize the screening of aggregates of different diameters. After screening, the finest aggregate enters the deceleration pipe and falls into the dust collector after deceleration. At this time, the user turns on the second motor, and the fan blades are driven by the second motor to rotate at high speed to blow the dust in the aggregate into the filter bag installed on the exhaust end of the dust collector to realize the dust collection work, while the heavier aggregate continues to fall and is discharged through the discharge pipe installed at the bottom of the dust collector. The fine dust is collected by the dust collector and the filter bag before the aggregate is discharged, which avoids the problem that the dust in the aggregate of the existing aggregate removal device is easily diffused into the surrounding air during discharge, which not only pollutes the air but also causes harm to the health of the staff.

[0009] Optionally, the bottom of the feed hopper extends downward to form a feed pipe connected to the inner cavity of the screening box. The magnetic separation device is a magnetic roller rotatably connected to the inner cavity of the feed pipe. A first motor for driving the magnetic roller to rotate counterclockwise is fixedly connected to one side wall of the feed pipe.

[0010] By adopting the above technical solution, the magnetic roller has magnetism and can absorb metal impurities such as steel bars, nails, etc. mixed in the aggregate through the action of magnetic field force, thereby realizing the separation of metal impurities.

[0011] Optionally, both ends of the magnetic roller penetrate the inner wall of the discharge pipe, and bearings are installed at the connection between the two ends of the magnetic roller and the inner wall of the discharge pipe.

[0012] By adopting the above technical solution, bearings are installed at the connection between the two ends of the magnetic roller and the inner wall of the discharge tube, so as to reduce the resistance of the magnetic roller during rotation through the bearings, so as to facilitate the first motor to drive the magnetic roller to rotate in the inner cavity of the discharge tube.

[0013] Optionally, a scraper fixedly connected to the inner wall of the discharge pipe is provided above the magnetic roller, and the side of the scraper close to the magnetic roller is in sliding contact with the outer surface of the magnetic roller. A guide plate fixedly connected to the inner wall of the screening box is obliquely arranged below the magnetic roller, and a first discharge port is also opened on the inner wall of the screening box.

[0014] By adopting the above technical solution, a scraper is set to block the aggregate from falling from the right side of the magnetic roller while scraping off the metal impurities adsorbed on the magnetic roller. After the metal impurities are scraped off by the scraper, they fall on the guide plate below and are discharged from the first discharge port of the screening box along the guide plate.

[0015] Optionally, the multi-stage screening assembly includes a plurality of vibrating screens obliquely arranged in the inner cavity of the screening box, the mesh apertures of the plurality of vibrating screens decrease sequentially from top to bottom, and a plurality of second discharge ports corresponding to the vibrating screens are also opened on the side wall of the screening box.

[0016] By adopting the above technical solution, multiple vibrating screens with different mesh apertures are set up to screen aggregates of different diameters. The screened aggregates are discharged through different second discharge ports respectively, and users can collect them separately, which is convenient for processing and utilization of aggregates of different diameters.

[0017] Optionally, a group of downwardly inclined retarder plates are provided on inner walls on opposite sides of the retarder tube, and a plurality of retarder plates in the two groups are cross-distributed.

[0018] By adopting the above technical solution, a retarding plate is provided to reduce the descending speed of the finest aggregate discharged from the bottom of the screening box, so as to facilitate the subsequent treatment of dust in the aggregate.

[0019] Optionally, an air inlet channel is formed between the periphery of the second motor and the inner wall of the dust removal cylinder, and a plurality of fixed shafts are provided in the air inlet channel, one end of the fixed shaft is fixedly connected to the second motor, and the other end of the fixed shaft is fixedly connected to the inner wall of the dust removal cylinder.

[0020] By adopting the above technical solution, an air inlet channel is reserved between the second motor and the inner wall of the dust collector, so that external air can be transported into the dust collector through the air inlet channel to blow away the dust in the aggregate. A fixed shaft is provided to fix the second motor without affecting the air entry.

[0021] Optionally, an inner screw ring is fixedly connected to the open end of the filter bag, and the inner screw ring is screwed to the dust removal cylinder through a joint.

[0022] By adopting the above technical solution, an inner screw ring is provided to screw the filter bag onto the exhaust end of the dust collector to collect dust. The screw connection method is not only stable, but also convenient for users to install and disassemble the filter bag.

[0023] In summary, the beneficial effects of this application are as follows:

[0024] The present application achieves dust collection by coordinating the structures such as the dust collecting cylinder, the second motor, the fan blades and the filter bag. The fine aggregate passes through the dust collecting cylinder before being discharged through the discharge pipe. The second motor installed in one end of the dust collecting cylinder can drive the fan blades to rotate at high speed to blow the dust in the aggregate into the filter bag, thereby collecting the dust. The aggregate after dust removal continues to fall and is discharged through the discharge pipe installed at the bottom of the dust collecting cylinder. The fine dust is collected by the dust collecting cylinder and the filter bag before the aggregate is discharged, thereby minimizing the problem that the dust in the aggregate of the existing aggregate removal device is easily diffused into the surrounding air during discharge, which not only pollutes the air but also causes harm to the health of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall cross-sectional structure of this application;

[0026] Figure 2 It is a schematic diagram of the installation structure of the first motor and the magnetic roller of the present application;

[0027] Figure 3 It is a schematic diagram of the connection structure of the fixed shaft, the second motor and the fan blades of the present application.

[0028] Explanation of the reference numerals: 1. screening box; 2. feed hopper; 3. magnetic roller; 4. bearing; 5. first motor; 6. scraper; 7. guide plate; 8. first discharge port; 9. vibrating screen; 10. second discharge port; 11. retarder; 12. retarder plate; 13. dust removal cylinder; 14. second motor; 15. fixed shaft; 16. fan blades; 17. joint; 18. filter bag; 19. inner screw ring; 20. discharge pipe. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] See also Figure 1-3 A recycled aggregate impurity removal device comprises a screening box 1 with a feed hopper 2 installed on the top. The feed hopper 2 is provided to facilitate the introduction of recycled aggregates that need to be impurity removed into the screening box 1 for processing.

[0031] A magnetic separation device is installed at the connection between the feed hopper 2 and the screening box 1. When the aggregate enters the feed hopper 2, the metal material in the aggregate can be adsorbed by the magnetic separation device to achieve the classification of the metal material and the aggregate.

[0032] A multi-stage screening component is provided in the inner cavity of the screening box 1, through which aggregates of different sizes are screened and aggregates of different diameters are classified, so as to facilitate subsequent utilization or further processing of the aggregates.

[0033] A retarder pipe 11 connected to the inner cavity of the screening box 1 is fixedly connected to the bottom of the screening box 1. A dust removal device is provided at one end of the retarder pipe 11 away from the screening box 1. The aggregates screened by the lowest screening assembly enter the retarder pipe 11. The falling speed of the aggregates is reduced by the internal structure of the retarder pipe 11, and then the fine dust in the aggregates is removed by the dust removal device to avoid dust dispersion due to the impact when the aggregates are removed, which may cause pollution to the environment.

[0034] The dust removal equipment includes a dust removal cylinder 13 horizontally installed at the bottom of the retarder 11, a second motor 14 is installed in the inner cavity of one end of the dust removal cylinder 13, a fan blade 16 is fixedly connected to the output end of the second motor 14, and the other end of the dust removal cylinder 13 extends outward to form a joint 17, and a filter bag 18 is detachably connected to the joint 17.

[0035] A discharge pipe 20 is also fixedly connected to the lower surface of the dust removal cylinder 13 and is located opposite to the deceleration pipe 11 .

[0036] Reference Figure 1 The bottom of the feed hopper 2 extends downward to form a feed pipe connected to the inner cavity of the screening box 1. The magnetic separation device is a magnetic roller 3 rotatably connected to the inner cavity of the feed pipe. A first motor 5 for driving the magnetic roller 3 to rotate counterclockwise is fixedly connected to one side wall of the feed pipe. The magnetic roller 3 is magnetic and can absorb metal impurities such as steel bars and nails mixed in the aggregate through the action of magnetic field force to achieve the separation of metal impurities.

[0037] Reference Figure 2 The two ends of the magnetic roller 3 penetrate the inner wall of the feeding tube, and bearings 4 are installed at the connection between the two ends of the magnetic roller 3 and the inner wall of the feeding tube. The bearings 4 are installed at the connection between the two ends of the magnetic roller 3 and the inner wall of the feeding tube, which is used to reduce the resistance of the magnetic roller 3 when rotating through the bearings 4, so that the first motor 5 can drive the magnetic roller 3 to rotate in the inner cavity of the feeding tube.

[0038] Reference Figure 1 A scraper 6 fixedly connected to the inner wall of the feeding tube is arranged above the magnetic roller 3. The side of the scraper 6 close to the magnetic roller 3 is in sliding contact with the outer surface of the magnetic roller 3. A guide plate 7 fixedly connected to the inner wall of the screening box 1 is arranged obliquely below the magnetic roller 3. A first discharge port 8 is also provided on the inner wall of the screening box 1. The scraper 6 is arranged to prevent the aggregate from falling from the right side of the magnetic roller 3 while scraping off the metal impurities adsorbed on the magnetic roller 3. After being scraped off by the scraper 6, the metal impurities fall on the guide plate 7 below and are discharged from the screening box 1 from the first discharge port 8 along the guide plate 7.

[0039] Reference Figure 1The multi-stage screening assembly includes a plurality of vibrating screens 9 obliquely arranged in the inner cavity of the screening box 1, the mesh apertures of the plurality of vibrating screens 9 decrease from top to bottom, and a plurality of second discharge ports 10 corresponding to the vibrating screens 9 are provided on the side wall of the screening box 1. A plurality of vibrating screens 9 with different mesh apertures are arranged to screen aggregates of different diameters, and the screened aggregates are discharged through different second discharge ports 10 respectively, and users can collect them separately, so as to facilitate the processing and utilization of aggregates of different diameters.

[0040] Reference Figure 1 A group of downwardly inclined retarding plates 12 are arranged on the inner walls of the retarding tube 11 on both sides, and the multiple retarding plates 12 in the two groups are cross-displaced. The retarding plates 12 are arranged to reduce the descending speed of the finest aggregate discharged from the bottom of the screening box 1, so as to facilitate the subsequent treatment of dust in the aggregate.

[0041] Reference Figure 1 An air inlet passage is formed between the side of the second motor 14 and the inner wall of the dust removal cylinder 13. A plurality of fixed shafts 15 are arranged in the air inlet passage. One end of the fixed shaft 15 is fixedly connected to the second motor 14, and the other end of the fixed shaft 15 is fixedly connected to the inner wall of the dust removal cylinder 13. An air inlet passage is reserved between the second motor 14 and the inner wall of the dust removal cylinder 13 so that external air can be transported to the dust removal cylinder 13 through the air inlet passage to blow away dust in the aggregate. The fixed shaft 15 is arranged to fix the second motor 14 without affecting air entry.

[0042] Reference Figure 1 The open end of the filter bag 18 is fixedly connected with an inner screw ring 19, and the inner screw ring 19 is screwed to the dust collecting cylinder 13 through the joint 17. The inner screw ring 19 is used to screw the filter bag 18 to the exhaust end of the dust collecting cylinder 13 to collect dust. The screw connection method is not only stable, but also convenient for users to install and remove the filter bag 18.

[0043] The implementation principle of the present application is as follows: when in use, the user first introduces the aggregate into the feed hopper 2, and the aggregate falls by gravity and first passes through the magnetic roller 3 to absorb metal impurities, removes the metal impurities, and then falls into the screening box 1, and is screened by multiple vibrating screens 9 arranged in the screening box 1 to realize the screening of aggregates of different diameters. After screening, the finest aggregate enters the retarding pipe 11 and then falls into the dust collecting barrel 13 after being retarded. At this time, the user turns on the second motor 14, and the fan blades 16 are driven by the second motor 14 to rotate at high speed, and the dust in the aggregate is blown into the filter bag 18 installed on the exhaust end of the dust collecting barrel 13 to realize the dust collection work, while the larger mass aggregate continues to fall and is discharged through the discharge pipe 20 installed at the bottom of the dust collecting barrel 13. The fine dust is collected by the dust collecting barrel 13 and the filter bag 18 before the aggregate is discharged, and the problem that the dust in the aggregate of the existing aggregate impurity removal device is easily diffused into the surrounding air during discharge, which not only pollutes the air, but also causes damage to the health of the staff, is avoided as much as possible.

[0044] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A regenerated aggregate impurity removal device, comprising a screening box (1) with a feed hopper (2) mounted on the top, a magnetic separation device mounted at the connection between the feed hopper (2) and the screening box (1), a multi-stage screening assembly being arranged in the inner cavity of the screening box (1), a retarding pipe (11) being fixedly connected to the bottom of the screening box (1) and communicating with the inner cavity of the screening box (1), a dust removal device being arranged at one end of the retarding pipe (11) away from the screening box (1), characterized in that: The dust removal device comprises a dust removal cylinder (13) horizontally mounted at the bottom end of the retarder (11); a second motor (14) is mounted in an inner cavity at one end of the dust removal cylinder (13); a fan blade (16) is fixedly connected to the output end of the second motor (14); the other end of the dust removal cylinder (13) extends outward to form a joint (17); a filter bag (18) is detachably connected to the joint (17); and a discharge pipe (20) is also fixedly connected to the lower surface of the dust removal cylinder (13) and is positioned opposite to the retarder (11).

2. A recycled aggregate impurity removal device according to claim 1, characterized in that: The bottom of the feed hopper (2) extends downward to form a feed pipe connected to the inner cavity of the screening box (1); the magnetic separation device is a magnetic roller (3) rotatably connected to the inner cavity of the feed pipe; a first motor (5) for driving the magnetic roller (3) to rotate counterclockwise is also fixedly connected to one side wall of the feed pipe.

3. A recycled aggregate impurity removal device according to claim 2, characterized in that: Both ends of the magnetic roller (3) penetrate the inner wall of the feeding tube, and bearings (4) are installed at the connection between the two ends of the magnetic roller (3) and the inner wall of the feeding tube.

4. A recycled aggregate impurity removal device according to claim 2, characterized in that: A scraper (6) fixedly connected to the inner wall of the discharge pipe is provided above the magnetic roller (3); a side of the scraper (6) close to the magnetic roller (3) is in sliding contact with the outer surface of the magnetic roller (3); a guide plate (7) fixedly connected to the inner wall of the screening box (1) is obliquely provided below the magnetic roller (3); and a first discharge port (8) is also provided on the inner wall of the screening box (1).

5. The device for removing impurities from recycled aggregate according to claim 4, characterized in that: The multi-stage screening assembly comprises a plurality of vibrating screens (9) obliquely arranged in the inner cavity of the screening box (1), wherein the mesh apertures of the plurality of vibrating screens (9) decrease in sequence from top to bottom, and a plurality of second discharge ports (10) corresponding to the vibrating screens (9) are also provided on the side wall of the screening box (1).

6. The device for removing impurities from recycled aggregate according to claim 1, characterized in that: A group of downwardly inclined deceleration plates (12) are provided on the inner walls of the deceleration tube (11) on opposite sides, and a plurality of the deceleration plates (12) in the two groups are cross-distributed.

7. The device for removing impurities from recycled aggregate according to claim 1, characterized in that: An air inlet passage is formed between the circumference of the second motor (14) and the inner wall of the dust removal cylinder (13), and a plurality of fixed shafts (15) are provided in the air inlet passage, one end of the fixed shaft (15) is fixedly connected to the second motor (14), and the other end of the fixed shaft (15) is fixedly connected to the inner wall of the dust removal cylinder (13).

8. The device for removing impurities from recycled aggregate according to claim 1, characterized in that: An inner screw ring (19) is fixedly connected to the open end of the filter bag (18), and the inner screw ring (19) is screwed to the dust removal cylinder (13) via the joint (17).

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