Waste concrete recycled aggregate preparation device for green construction and use method

Abstract

The invention relates to the technical field of concrete regeneration, in particular to a waste concrete recycled aggregate preparation device for green construction and a use method. The device comprises a main rack, a feeding frame, a screening assembly, a jaw crusher, a conveying assembly and an adsorption assembly. The screening assembly achieves vibration screening through cooperation of a cam and a reset spring, and the screening efficiency and accuracy are improved. The conveying belt is responsible for material conveying, and blocking is avoided. The adsorption assembly is of a rotary electromagnet structure, magnetic impurities are effectively removed, and the impurities are intensively discharged through a scraper and a discharging box. The using method comprises the steps of feeding, screening, crushing, conveying, impurity removing and finished product collecting. The device can improve the quality and purity of recycled aggregate, and is beneficial to resource utilization of waste concrete.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete recycling, in particular to a waste concrete recycled aggregate preparation device for green construction and a use method thereof. BACKGROUND

[0002] In the field of green construction, the treatment and recycling of waste concrete is an important issue. With the rapid development of the construction industry, a large amount of waste concrete is generated from building demolition and renovation projects. If not properly treated, these waste concretes will not only occupy a large amount of land resources, but also cause serious environmental pollution. Therefore, how to achieve efficient recycling and reuse of waste concrete and prepare it into recycled aggregate that meets the requirements has become a problem that needs to be solved in the current construction industry.

[0003] At present, although there are some waste concrete treatment equipment on the market, most of them have some shortcomings. For example, in the material screening link, the screening efficiency of some equipment is low, and different particle sizes of concrete blocks cannot be quickly and accurately separated, resulting in large differences in the particle size of the material entering the crusher, affecting the crushing effect and the quality of the recycled aggregate; in terms of material conveying, the conveying stability of some equipment is poor, and problems such as material accumulation and blockage are prone to occur, affecting production efficiency and normal operation of the equipment; in the impurity removal link, the existing equipment has an unsatisfactory removal effect on magnetic substances in the material, which cannot guarantee the purity of the recycled aggregate, limiting the widespread application of recycled aggregate in green construction.

[0004] Therefore, it is of great practical significance to develop a waste concrete recycled aggregate preparation device for green construction that can efficiently screen, stably convey and effectively remove impurities, which helps to improve the recycling rate of waste concrete and promote the sustainable development of the construction industry. SUMMARY

[0005] The purpose of the present application is to solve the problems in the prior art that in the material screening link, the screening efficiency of some equipment is low, and different particle sizes of concrete blocks cannot be quickly and accurately separated, resulting in large differences in the particle size of the material entering the crusher, affecting the crushing effect and the quality of the recycled aggregate; in terms of material conveying, the conveying stability of some equipment is poor, and problems such as material accumulation and blockage are prone to occur, affecting production efficiency and normal operation of the equipment; in the impurity removal link, the existing equipment has an unsatisfactory removal effect on magnetic substances in the material, which cannot guarantee the purity of the recycled aggregate, limiting the widespread application of recycled aggregate in green construction, and the waste concrete recycled aggregate preparation device for green construction and the use method thereof are proposed.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The application discloses a device for preparing waste concrete recycled aggregate for green construction.

[0008] A feeding frame is fixedly installed on one side of the top of the main frame.

[0009] A screening assembly is arranged at the bottom of the feeding frame and used for vibrating and screening the input waste concrete materials.

[0010] A jaw crusher is fixedly installed on the top of the main frame and located on one side of the feeding frame, and a feeding port of the jaw crusher is in communication with a discharging end of the screening assembly.

[0011] A conveying assembly is arranged in the main frame and located below the jaw crusher and used for receiving and conveying the crushed materials.

[0012] An adsorption assembly is arranged in the main frame and located above a conveying path of the conveying assembly and used for removing magnetic impurities in the materials.

[0013] In the device, the materials are input through the feeding frame, screened by the screening assembly, and then the materials meeting the particle size requirements are input into the jaw crusher for crushing, the crushed materials fall on the conveying assembly and are conveyed, and the magnetic impurities are removed by the adsorption assembly during the conveying process.

[0014] In a possible design, the screening assembly comprises:

[0015] A feeding frame is slidably arranged through the bottom of the feeding frame.

[0016] A supporting inclined plate is fixedly installed on the inner side of the bottom of the feeding frame.

[0017] A plurality of screening racks are fixedly installed on the supporting inclined plate, and the screen hole diameters of the screening racks are set according to the particle size of the required recycled aggregate.

[0018] A feeding box is fixedly installed on one side of the bottom of the feeding frame.

[0019] A guide frame is fixedly installed on one side of the feeding box and in communication with the inner cavity of the feeding box, and an outlet of the guide frame corresponds to the position of the feeding port of the jaw crusher.

[0020] A driving mechanism is used for driving the feeding frame to reciprocatingly vibrate.

[0021] In a possible design, the driving mechanism comprises:

[0022] A support, a driving shaft and a driven shaft are rotatably connected between two protective side plates fixed on the top of the support.

[0023] A plurality of cams are fixedly installed on the driving shaft and the driven shaft respectively, and the protruding part of the cam is in contact with the bottom of the feeding frame;

[0024] A synchronous belt transmission mechanism is connected to the driving shaft and the driven shaft to make them rotate synchronously;

[0025] A first servo motor is fixedly installed on the top of the support frame;

[0026] A chain transmission mechanism is connected to the output shaft of the first servo motor and one end of the driving shaft;

[0027] A plurality of return springs are connected between the top support plate fixed on the bottom of the feeding frame and the bottom support plate fixed on the support frame;

[0028] The first servo motor drives the driving shaft to rotate through the chain transmission mechanism, and then drives the driven shaft to rotate synchronously through the synchronous belt transmission mechanism, and the cam rotates and periodically contacts and separates from the bottom of the feeding frame, and the return spring and the feeding frame drive the support inclined plate and the screening frame to reciprocate up and down.

[0029] In a possible design, the chain transmission mechanism includes a second sprocket fixedly installed on the output shaft of the first servo motor, a first sprocket fixedly installed on one end of the driving shaft, and a chain engaged and sleeved on the first sprocket and the second sprocket.

[0030] In a possible design, the conveying assembly includes:

[0031] Two conveying rollers are rotatably connected between the inner walls of the two sides of the U-shaped frame through bearings;

[0032] A conveying belt is sleeved on the outer periphery of the two conveying rollers;

[0033] A second servo motor is fixedly installed on one side of the U-shaped frame, and the output shaft of the second servo motor is fixedly connected to one end of one of the conveying rollers through a shaft coupling;

[0034] A first protective shell is fixedly installed on one side of the U-shaped frame and covers the second servo motor inside the first protective shell.

[0035] In a possible design, the adsorption assembly includes:

[0036] A rotating shaft is rotatably penetrated through the installation plate fixedly installed inside the main frame through a bearing;

[0037] A rotating disc is fixedly sleeved on the outer periphery of the rotating shaft;

[0038] A plurality of electromagnets are uniformly fixedly installed on the outer peripheral wall of the rotating disc;

[0039] A third servo motor is fixedly installed on one side of the mounting horizontal plate, and its output shaft is fixedly connected with one end of the rotating shaft through a shaft coupling;

[0040] A second protective shell is fixedly installed on one side of the mounting horizontal plate and covers the third servo motor inside it;

[0041] A scraper is fixedly installed on one side of the mounting horizontal plate, and its blade edge is in contact with the outer peripheral surface of the electromagnet;

[0042] A discharge box is fixedly installed on one side of the U-shaped frame, and its top opening is located below the rotating path of the electromagnet;

[0043] The energized electromagnet rotates with the rotating disc to adsorb the magnetic substances in the material on the conveying belt, and the adsorbed magnetic substances are scraped off by the scraper during rotation, and the scraped-off magnetic substances fall into the discharge box for centralized discharge.

[0044] In a possible design, the support frame is fixedly installed on the top side of the main frame, and support legs are fixedly connected to the top of both sides of the support frame. The tops of the two support legs are fixedly connected with the feeding frame.

[0045] In a possible design, the U-shaped frame is fixedly installed inside the main frame and below the discharge port of the jaw crusher.

[0046] A method for preparing green construction waste concrete recycled aggregate using the device as described above, comprising the following steps:

[0047] The waste concrete material is fed through the feeding frame;

[0048] The first servo motor is started to drive the screening assembly to work, so that the feeding frame, the support inclined plate and the screening frame thereon vibrate to screen the material. The material meeting the particle size requirement falls into the feeding box through the screening frame, enters the jaw crusher through the guide frame and the feeding port;

[0049] The jaw crusher is started to crush the material, and the crushed material falls onto the conveying belt from the bottom of the jaw crusher;

[0050] The second servo motor is started to drive the conveying belt to run and convey the material;

[0051] The third servo motor and the electromagnet are started, the rotating disc drives the energized electromagnet to rotate, adsorbs the magnetic substances in the material, and the adsorbed magnetic substances are scraped off by the scraper during the rotation of the electromagnet and fall into the discharge box for discharge;

[0052] The impurity-removed material is discharged from the end of the conveying belt, and is the recycled aggregate product.

[0053] In use, the waste concrete to be crushed is fed into the device through the feeding frame. The first servo motor is started, and the output shaft of the first servo motor drives the second sprocket to rotate. The second sprocket drives the first sprocket to rotate through the chain. The first sprocket drives the driving shaft to rotate. The driving shaft drives the driven shaft to rotate through the synchronous belt and the synchronous wheel. At this time, the driven shaft and the driving shaft drive a plurality of cams to rotate. The cams continuously abut against the bottom of the feeding frame. At this time, the feeding frame drives the supporting inclined plate and the screening frame to move upwards. The feeding frame drives the top supporting plate to move upwards, thereby stretching the return spring. At this time, the concrete blocks on the supporting inclined plate continuously vibrate. When the cams no longer abut against the bottom of the feeding frame, the feeding frame and the top supporting plate are reset under the action of the tension of the return spring. At this time, the concrete blocks that can pass through the screening frame can enter the inside of the feeding tank, and are discharged into the inside of the feeding port through the guide frame, enter the inside of the jaw crusher, and are crushed. The concrete blocks that cannot pass through the inside of the screening frame remain in the inside of the feeding frame.

[0054] The crushed material is discharged from the bottom of the jaw crusher to the top of the conveying belt. The second servo motor is started, and the output shaft of the second servo motor drives the conveying roller to rotate, thereby driving the conveying belt to convey forward. At this time, the conveying belt conveys the crushed material forward.

[0055] The plurality of electromagnets are started. At this time, the plurality of electromagnets can adsorb the magnetic substances in the material. The third servo motor can be started. The output shaft of the third servo motor drives the rotating shaft to rotate. The rotating shaft drives the rotating disc to rotate. The rotating disc drives the plurality of electromagnets to rotate, thereby adjusting the positions of the plurality of electromagnets to ensure the adsorption effect. During the continuous rotation of the electromagnets, the magnetic substances on the outer wall of the electromagnets are scraped off by the scraper. The scraped electromagnets again abut against one side of the top of the discharge box for re-scraping, to ensure that the magnetic substances are scraped off, and are discharged through the discharge box.

[0056] Beneficial effects: The first servo motor drives the driving shaft and the driven shaft to rotate, drives the cams to continuously abut against the bottom of the feeding frame, and realizes the up-and-down vibration of the feeding frame in cooperation with the return spring, thereby making the concrete blocks on the supporting inclined plate continuously vibrate. This vibrating and screening method can effectively improve the screening efficiency, make the concrete blocks meeting the particle size requirements quickly pass through the screening frame into the feeding tank, and then be discharged to the jaw crusher through the guide frame, while the concrete blocks with large particle sizes remain in the feeding frame, thereby realizing efficient screening of the size of the waste concrete material, providing suitable particle size material for the subsequent crushing process, and helping to improve the crushing effect and the quality of the recycled aggregate.

[0057] The second servo motor drives the conveying roller to rotate, and then drives the conveying belt to forwardly convey the materials. The conveying assembly is simple and reliable in structure, can stably convey the crushed materials from the bottom of the jaw crusher to the subsequent processing link, ensures smooth material flow of the entire preparation device, and improves the production efficiency and the automation degree.

[0058] The adsorption assembly is provided with multiple electromagnets, and the third servo motor drives the rotating disc to rotate, so that the electromagnets continuously adjust positions in the rotating process, and can comprehensively and effectively adsorb the magnetic substances in the materials. Meanwhile, the scraper can scrape off the magnetic substances adsorbed on the outer wall of the electromagnet in the rotating process of the electromagnet, and the scraped electromagnet is in contact with the discharge box again for secondary scraping, so that the magnetic substances are completely removed and discharged through the discharge box, the purity of the recycled aggregate is greatly improved, the quality of the recycled aggregate is improved, and the recycled aggregate is more in line with the requirements of green construction.

[0059] The entire device is compact and reasonable in layout, the main frame is used as a basic support structure, the feeding frame, the jaw crusher, the U-shaped frame, the mounting horizontal plate and other components are sequentially installed, and the space is fully utilized. The components are closely matched, a complete production process is formed from the input of the materials, screening, crushing, conveying to impurity removal, and the processes are smoothly connected, the overall operation efficiency and stability of the device are improved.

[0060] The first protective shell and the second protective shell are respectively arranged outside the second servo motor and the third servo motor, which can effectively protect the motors from the influence of external environmental factors such as dust and sundries, prolong the service life of the motors, reduce the equipment failure rate, reduce the maintenance cost, and ensure the long-term stable operation of the device. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 A three-dimensional structural schematic view of the waste concrete recycled aggregate preparation device for green construction provided by the present application is shown in the figure.

[0062] Figure 2 A three-dimensional structural schematic view of the waste concrete recycled aggregate preparation device for green construction provided by the present application is shown in the figure.

[0063] Figure 3 A three-dimensional structural schematic view of the waste concrete recycled aggregate preparation device for green construction provided by the present application is shown in the figure.

[0064] Figure 4 A three-dimensional structural schematic view of the waste concrete recycled aggregate preparation device for green construction provided by the present application is shown in the figure.

[0065] Figure 5 A three-dimensional structural schematic view of the waste concrete recycled aggregate preparation device for green construction provided by the present application is shown in the figure.

[0066] Figure 6 The three-dimensional structure schematic diagram of the bracket and the first servo motor in the green construction waste concrete recycled aggregate preparation device is provided in the application.

[0067] Figure 7 The three-dimensional structure schematic diagram of the U-shaped frame and the rotating disc of the green construction waste concrete recycled aggregate preparation device is provided in the application.

[0068] Figure 8 The exploded view of the conveying belt and the U-shaped frame in the green construction waste concrete recycled aggregate preparation device is provided in the application.

[0069] Figure 9 The three-dimensional structure schematic diagram of the electromagnet and the rotating disc in the green construction waste concrete recycled aggregate preparation device is provided in the application.

[0070] In the figure: 1, main frame; 2, jaw crusher; 3, feeding frame; 4, support leg; 5, bracket; 6, U-shaped frame; 7, rotating disc; 8, support inclined plate; 9, feeding frame; 10, screening frame; 11, feeding box; 12, guide frame; 13, protective side plate; 14, return spring; 15, top support plate; 16, driving shaft; 17, cam; 18, first servo motor; 19, conveying belt; 20, discharge box; 21, first protective shell; 22, second servo motor; 23, conveying roller; 24, scraper; 25, third servo motor; 26, second protective shell; 27, mounting cross plate; 28, electromagnet; 29, rotating shaft; 30, first sprocket; 31, chain; 32, second sprocket; 33, bottom support plate; 34, driven shaft; 35, feeding port. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0072] In an embodiment: refer to Figures 1-9 The preparation device has the following specific implementation manners:

[0073] The device as a whole takes the main frame 1 as the installation basis, and each component is sequentially assembled thereon to realize the function of preparing recycled aggregate from waste concrete.

[0074] On one side of the top of the main rack 1, the support 5 is fixed and installed by welding, the support legs 4 are welded on both sides of the top of the support 5, the two support legs 4 are welded on the top of the feeding frame 3, and the feeding frame 3 is provided with a screening assembly at the bottom. In the screening assembly, the feeding frame 9 is slidably penetrated through the bottom of the feeding frame 3, the support inclined plate 8 is welded on the inner wall of one side of the bottom of the feeding frame 9, a plurality of screening frames 10 are evenly welded on one side of the support inclined plate 8, and the aperture of the screening frame 10 is set according to the required particle size specification of the recycled aggregate. The feeding box 11 is welded on one side of the bottom of the feeding frame 9, the guide frame 12 is welded on one side of the feeding box 11, the position of the guide frame 12 corresponds to the feeding port 35 of the jaw crusher 2, and it is ensured that the screened material can smoothly enter the jaw crusher 2. The top supporting plates 15 are welded on the four corners of the bottom of the feeding frame 9, the bottom supporting plates 33 are welded on both sides of the top of the support 5, the reset springs 14 are installed between the bottom supporting plates 33 and the top supporting plates 15, and the two ends of the reset springs 14 are connected with the bottom supporting plates 33 and the top supporting plates 15 through hooks. The protective side plates 13 are welded on both sides of the top of the support 5, the driving shaft 16 and the driven shaft 34 are rotatably penetrated between the two protective side plates 13 through bearings, the cam 17 is fixedly and installed on the outer wall of the driving shaft 16 and the driven shaft 34 through keys, a plurality of cams 17 are staggered to realize intermittent resistance to different positions of the feeding frame 9. The synchronous wheels on the outer walls of the driving shaft 16 and the driven shaft 34 are drivingly connected through synchronous belts, the first servo motor 18 is fixedly and installed on the top of the support 5 through bolts, the output shaft of the first servo motor 18 is fixedly and installed with the second sprocket 32 through a key, one end of the driving shaft 16 is fixedly and installed with the first sprocket 30 through a key, and the first sprocket 30 and the second sprocket 32 are drivingly connected through the chain 31.

[0075] The jaw crusher 2 is fixedly and installed on the other side of the top of the main rack 1 through bolts, the feeding port 35 of the jaw crusher 2 is located on one side of the feeding frame 3 and cooperates with the guide frame 12, and it is ensured that the screened material can accurately enter the jaw crusher 2 for crushing operation.

[0076] The U-shaped frame 6 is fixedly and installed in the main rack 1 through welding, and the conveying assembly is arranged on the top of the U-shaped frame 6. In the conveying assembly, the two conveying rollers 23 are rotatably connected between the inner walls of the two sides of the U-shaped frame 6 through bearings, the conveying belts 19 are drivingly sleeved on the outer walls of the two conveying rollers 23, the second servo motor 22 is fixedly and installed on one side of the U-shaped frame 6 through bolts, and one end of one of the conveying rollers 23 is connected with the output shaft of the second servo motor 22 through a shaft coupling to provide power for the operation of the conveying belt 19. The first protective shell 21 is fixedly and installed on one side of the U-shaped frame 6 through bolts, and the second servo motor 22 is covered in the first protective shell 21 to prevent dust, sundries and the like from entering the second servo motor 22 to affect the normal operation thereof.

[0077] When the device is in operation, the waste concrete is put into the feeding frame 3, the first servo motor 18 is started, the output shaft of the first servo motor 18 drives the second sprocket 32 to rotate, the second sprocket 32 drives the first sprocket 30 to rotate through the chain 31, the first sprocket 30 drives the driving shaft 16 to rotate, the driving shaft 16 drives the driven shaft 34 to rotate through the synchronous belt and the synchronous wheel, and the driving shaft 16 and the driven shaft 34 drive a plurality of cams 17 to rotate. The cams 17 continuously abut against the bottom of the feeding frame 9, so that the feeding frame 9 drives the supporting inclined plate 8 and the screening frame 10 to move upwards, and the feeding frame 9 drives the top supporting plate 15 to move upwards to stretch the return spring 14. The concrete blocks on the supporting inclined plate 8 are screened due to vibration. When the cams 17 no longer abut against the feeding frame 9, the feeding frame 9 and the top supporting plate 15 are reset under the action of the pulling force of the return spring 14. The concrete blocks meeting the particle size requirements pass through the screening frame 10 into the feeding box 11, and then pass through the guide frame 12 and the feeding port 35 into the jaw crusher 2 for crushing. The concrete blocks that cannot pass through the screening frame 10 are left in the feeding frame 9.

[0078] The crushed material is discharged from the bottom of the jaw crusher 2 to the top of the conveying belt 19, the second servo motor 22 is started, the output shaft of the second servo motor 22 drives the conveying roller 23 to rotate, and the conveying roller 23 drives the conveying belt 19 to convey the material forward.

[0079] In the process of conveying the material, a plurality of electromagnets 28 are started, and the electromagnets 28 adsorb the magnetic substances in the material. At the same time, the third servo motor 25 is started, the output shaft of the third servo motor 25 drives the rotating shaft 29 to rotate, the rotating shaft 29 drives the rotating disc 7 to rotate, the rotating disc 7 drives a plurality of electromagnets 28 to rotate, and the position of the electromagnets 28 is adjusted to ensure the adsorption effect. In the process of rotating the electromagnets 28, the magnetic substances adsorbed on the outer wall of the electromagnets 28 are scraped off by the scraper 24. The electromagnets 28 are scraped again after scraping, so as to ensure that the magnetic substances are completely scraped off and discharged through the discharge box 20, so as to obtain the recycled aggregate with high purity, improve the recycling rate of waste concrete, and promote the sustainable development of the construction industry.

[0080] A method for using the green construction waste concrete recycled aggregate preparation device as described above, comprising the following steps:

[0081] The waste concrete material is put in through the feeding frame 3;

[0082] The first servo motor 18 is started to drive the screening assembly to work, so that the feeding frame 9 and the supporting inclined plate 8 and the screening frame 10 thereon vibrate to screen the material. The material meeting the particle size requirements falls into the feeding box 11 through the screening frame 10, and then passes through the guide frame 12 and the feeding port 35 into the jaw crusher 2;

[0083] The jaw crusher 2 is started to crush the material, and the crushed material is discharged from the bottom of the jaw crusher 2 and falls onto the conveying belt 19.

[0084] Start the second servo motor 22 drive belt 19 running, conveying materials;

[0085] Start the third servo motor 25 and electromagnet 28, rotating disc 7 drive energized electromagnet 28 rotation, adsorption of magnetic material in the material, the adsorbed magnetic material in the electromagnet 28 rotation process is scraped by scraper 24, and falls into the discharge box 20 discharge;

[0086] After the impurity removal, the material is discharged from the end of the conveying belt 19, which is the recycled aggregate product.

[0087] The present application can be used in the field of concrete recycling, and can also be used in other fields applicable to the present application.

[0088] In another embodiment: reference Figures 1-9 , the green construction waste concrete recycled aggregate preparation device is used in the field of concrete recycling. A horizontal plate 27 is fixedly installed inside the main frame 1 by welding. An adsorption assembly is arranged on one side of the horizontal plate 27. In the adsorption assembly, a rotating shaft 29 penetrates the inside of the horizontal plate 27 through a bearing. A third servo motor 25 is fixedly installed on one side of the horizontal plate 27 by bolts. The output shaft of the third servo motor 25 is connected with one end of the rotating shaft 29 through a coupling, providing power for the rotation of the rotating shaft 29. A second protective shell 26 is fixedly installed on one side of the horizontal plate 27 by bolts. The second protective shell 26 covers the third servo motor 25 inside to protect it. A rotating disc 7 is fixedly installed on the outer wall of the rotating shaft 29 through a key. A plurality of electromagnets 28 are fixedly installed on the outer wall of the rotating disc 7. The electromagnets 28 have magnetism after being energized and can adsorb magnetic materials in the material. A scraper 24 is fixedly installed on one side of the horizontal plate 27 by bolts. The cutting edge of the scraper 24 is in contact with the outer wall of the electromagnet 28, which is used to scrape the magnetic materials adsorbed on the outer wall of the electromagnet 28. A discharge box 20 is fixedly installed on one side of the U-shaped frame 6 by bolts. The top opening of the discharge box 20 intersects with the rotation track of the electromagnet 28, which is used to collect the magnetic materials that fall again after being scraped by the scraper 24 and discharge the device.

[0089] However, as known to those skilled in the art, the working principle and wiring method of the first servo motor 18, the second servo motor 22, the electromagnet 28 and the third servo motor 25 all belong to conventional means or common knowledge, which will not be described here. Those skilled in the art can make any selection or change according to their needs or convenience.

[0090] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A device for preparing recycled aggregate of waste concrete for green construction, characterized by, The utility model relates to a waste concrete recycling device, which comprises: a main frame (1); a feeding frame (3) fixedly installed on one side of the top of the main frame (1); a screening assembly arranged at the bottom of the feeding frame (3) and used for vibrating and screening the waste concrete materials; a jaw crusher (2) fixedly installed on the top of the main frame (1) and located on one side of the feeding frame (3), wherein the feeding port (35) of the jaw crusher (2) is connected with the discharging end of the screening assembly; a conveying assembly arranged inside the main frame (1) and located below the jaw crusher (2) and used for receiving and conveying the crushed materials; an adsorption assembly arranged inside the main frame (1) and located above the conveying path of the conveying assembly and used for removing the magnetic impurities in the materials; wherein the materials are fed through the feeding frame (3), the materials meeting the particle size requirement are screened by the screening assembly and then enter the jaw crusher (2) to be crushed, and the crushed materials fall onto the conveying assembly to be conveyed and removed by the adsorption assembly during the conveying process.

2. The apparatus for preparing waste concrete recycled aggregate for green construction according to claim 1, wherein The screening assembly comprises: a feeding frame (9) slidingly penetrating through the bottom of the feeding frame (3); a supporting inclined plate (8) fixedly installed on the inner side of the bottom of the feeding frame (9); a plurality of screening frames (10) fixedly installed on the supporting inclined plate (8), wherein the screen hole diameters of the screening frames (10) are set according to the particle size of the required recycled aggregate; a feeding box (11) fixedly installed on one side of the bottom of the feeding frame (9); a guide frame (12) fixedly installed on one side of the feeding box (11) and connected with the inner cavity of the feeding box (11), wherein the outlet of the guide frame (12) corresponds to the position of the feeding port (35) of the jaw crusher (2); a driving mechanism used for driving the feeding frame (9) to reciprocatingly vibrate.

3. The apparatus for preparing waste concrete recycled aggregate for green construction according to claim 2, wherein The driving mechanism comprises: a support (5), a driving shaft (16) and a driven shaft (34) rotatably connected between two protective side plates (13) fixedly installed on the top of the support (5); a plurality of cams (17) fixedly installed on the driving shaft (16) and the driven shaft (34), respectively, wherein the protruding portions of the cams (17) abut against the bottom of the feeding frame (9); a synchronous belt transmission mechanism connected with the driving shaft (16) and the driven shaft (34) to synchronously rotate the driving shaft (16) and the driven shaft (34); a first servo motor (18) fixedly installed on the top of the support (5); a chain transmission mechanism connected with the output shaft of the first servo motor (18) and one end of the driving shaft (16); a plurality of return springs (14) having two ends respectively connected with a top supporting plate (15) fixedly installed on the bottom of the feeding frame (9) and a bottom supporting plate (33) fixedly installed on the support (5). The first servo motor (18) drives the driving shaft (16) to rotate through the chain transmission mechanism, and then drives the driven shaft (34) to rotate synchronously through the synchronous belt transmission mechanism, the cam (17) rotates and periodically contacts and separates from the bottom of the feeding frame (9), and cooperates with the tension of the return spring (14) to drive the feeding frame (9) to drive the supporting inclined plate (8) and the screening frame (10) to reciprocate up and down.

4. The apparatus for preparing waste concrete recycled aggregate for green construction according to claim 3, wherein The chain transmission mechanism comprises a second sprocket (32) fixedly installed on the output shaft of the first servo motor (18), a first sprocket (30) fixedly installed on one end of the driving shaft (16), and a chain (31) engaged and sleeved on the first sprocket (30) and the second sprocket (32).

5. The apparatus for preparing waste concrete recycled aggregate for green construction according to claim 1, wherein The conveying assembly comprises: Two conveying rollers (23) rotatably connected between the inner walls of the two sides of the U-shaped frame (6) through bearings; A conveying belt (19) drivingly sleeved on the outer periphery of the two conveying rollers (23); A second servo motor (22) fixedly installed on one side of the U-shaped frame (6), and an output shaft of the second servo motor (22) fixedly connected with one end of one of the conveying rollers (23) through a shaft coupling; A first protective shell (21) fixedly installed on one side of the U-shaped frame (6) and covering the second servo motor (22) in the first protective shell (21).

6. The apparatus for preparing waste concrete recycled aggregate for green construction according to claim 1, wherein The adsorption assembly comprises: A rotating shaft (29) rotatably penetrating through a mounting plate (27) fixedly installed in the main rack (1); A rotating disc (7) fixedly sleeved on the outer periphery of the rotating shaft (29); A plurality of electromagnets (28) uniformly fixedly installed on the outer peripheral wall of the rotating disc (7); A third servo motor (25) fixedly installed on one side of the mounting plate (27), and an output shaft of the third servo motor (25) fixedly connected with one end of the rotating shaft (29) through a shaft coupling; A second protective shell (26) fixedly installed on one side of the mounting plate (27) and covering the third servo motor (25) in the second protective shell (26); A scraper (24) fixedly installed on one side of the mounting plate (27), and a blade edge of the scraper (24) in contact with the outer peripheral surface of the electromagnet (28); A discharge box (20) fixedly installed on one side of the U-shaped frame (6), and a top opening of the discharge box (20) located below the rotating path of the electromagnet (28); The electromagnet (28) is energized and rotates with the rotating disc (7) to adsorb the magnetic material in the material on the conveying belt (19), and the adsorbed magnetic material is scraped off by the scraper (24) during rotation, and the scraped-off magnetic material falls into the discharge box (20) and is discharged.

7. The apparatus for preparing waste concrete recycled aggregate for green construction according to claim 3, wherein The support (5) is fixedly installed on one side of the top of the main rack (1), and support legs (4) are fixedly connected to the top of both sides of the support (5), and the top of the two support legs (4) is fixedly connected with the feeding frame (3).

8. The apparatus for preparing waste concrete recycled aggregate for green construction according to claim 1, wherein The U-shaped frame (6) is fixedly installed in the main rack (1) and located below the discharge port of the jaw crusher (2).

9. A method of using the green construction waste concrete recycled aggregate manufacturing apparatus according to any one of claims 1 to 8, characterized by, The method comprises the following steps: The waste concrete material is fed through the feeding frame (3). Start the first servo motor (18) to drive the screening assembly to work, so that the feeding frame (9), the supporting inclined plate (8) and the screening frame (10) vibrate to screen the materials, and the materials meeting the particle size requirements fall into the feeding box (11) through the screening frame (10), enter the jaw crusher (2) through the guide frame (12) and the feeding port (35); Start the jaw crusher (2) to crush the materials, and the crushed materials are discharged from the bottom of the jaw crusher (2) and fall onto the conveying belt (19); Start the second servo motor (22) to drive the conveying belt (19) to convey the materials; Start the third servo motor (25) and the electromagnet (28), rotate the disc (7) to drive the electrified electromagnet (28) to rotate, adsorb the magnetic substances in the materials, and scrape off the adsorbed magnetic substances by the scraper (24) during the rotation of the electromagnet (28) and discharge the magnetic substances into the discharge box (20); The materials after the impurity removal are discharged from the end of the conveying belt (19), which are the finished products of the recycled aggregate.

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