Recycled aggregate screening device for construction site

Abstract

The utility model relates to the technical field of aggregate screening, in particular to a recycled aggregate screening device for a construction site, which comprises a screening assembly and a moving assembly, the screening assembly comprises a first-layer screen mesh assembly, a second-layer screen mesh assembly arranged below the first-layer screen mesh assembly, a third-layer screen mesh assembly arranged below the second-layer screen mesh assembly, a fourth-layer screen mesh assembly arranged below the third-layer screen mesh assembly and a water accumulation layer assembly arranged below the fourth-layer screen mesh assembly. The moving assembly comprises four universal wheels. According to the recycled aggregate screening device, recycled aggregate can be divided into different particle sizes only through one-time screening, the screened aggregate with the different particle sizes can be used for preparing different types of concrete, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of aggregate screening technology, and more specifically to a recycled aggregate screening device for construction sites. Background Technology

[0002] To reduce construction waste emissions at construction sites, resources are being utilized from concrete blocks, masonry blocks, and other construction waste. Given the large quantity of construction waste, the primary method of resource utilization is to crush it into recycled aggregate, which is then mixed with alkali-activated solutions and other materials using alkali activation technology to create new concrete for use in road hardening and temporary facilities at construction sites.

[0003] However, the particle size of the crushed recycled aggregate varies considerably, necessitating screening. Alkali-activated recycled aggregate concrete requires aggregates with particle sizes of 0-5mm, 5-10mm, and 10-20mm, requiring appropriate tools for rapid aggregate screening.

[0004] Traditional aggregate screening methods involve manual screening using a single-layer screen, requiring at least four screenings. This is labor-intensive, inefficient, and prone to dust generation. Utility Model Content

[0005] In response to the shortcomings of existing technologies, the inventors have developed a recycled aggregate screening device for construction sites through long-term practice. The device can separate recycled aggregates into different particle sizes with only one screening operation. The different particle sizes of the screened aggregates can be used to prepare different types of concrete.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A recycled aggregate screening device for construction sites includes a screening assembly and a moving assembly. The screening assembly includes a first screen assembly, a second screen assembly positioned below the first screen assembly, a third screen assembly positioned below the second screen assembly, a fourth screen assembly positioned below the third screen assembly, and a water collection layer assembly positioned below the fourth screen assembly. The moving assembly includes four casters.

[0008] The first layer of screen assembly includes two first longitudinal side plates, two first transverse side plates, and a first layer of screen. The two first longitudinal side plates are disposed at both ends of the first layer of screen in the transverse direction, and the two first transverse side plates are respectively disposed at both ends of the first layer of screen in the longitudinal direction. The bottom of the first longitudinal side plates is provided with a first groove.

[0009] The second layer screen assembly includes two second longitudinal side plates, two second transverse side plates, and a second layer screen. The two second longitudinal side plates are disposed at both ends of the transverse direction of the second layer screen, and the two second transverse side plates are respectively disposed at both ends of the longitudinal direction of the second layer screen. The top of the second longitudinal side plate is provided with a second protrusion that matches the size of the first groove, and the bottom of the second longitudinal side plate is provided with a second groove.

[0010] The third-layer screen assembly includes two third longitudinal side plates, two third transverse side plates, and a third-layer screen. The two third longitudinal side plates are disposed at both ends of the transverse direction of the third-layer screen, and the two third transverse side plates are respectively disposed at both ends of the longitudinal direction of the third-layer screen. The top of the third longitudinal side plate is provided with a third protrusion that matches the size of the second groove, and the bottom of the third longitudinal side plate is provided with a third groove.

[0011] The fourth layer screen assembly includes two fourth longitudinal side plates, two fourth transverse side plates, and a fourth layer screen. The two fourth longitudinal side plates are disposed at both ends of the fourth layer screen in the transverse direction, and the two fourth transverse side plates are respectively disposed at both ends of the fourth layer screen in the longitudinal direction. The top of the fourth longitudinal side plate is provided with a fourth protrusion that matches the size of the third groove, and the bottom of the fourth longitudinal side plate is provided with a fourth groove.

[0012] The water accumulation layer assembly includes two fifth longitudinal side plates, two fifth transverse side plates, and a base plate. The two fifth longitudinal side plates are fixed to the transverse ends of the upper surface of the base plate, and the two fifth transverse side plates are fixed to the longitudinal ends of the upper surface of the base plate. The top of each fifth longitudinal side plate has a first protrusion matching the size of the fourth groove. The moving assembly is fixed to the bottom surface of the base plate, and four casters are respectively fixed to the four corners of the base plate.

[0013] Furthermore, the bottom of the two facing sides of the first longitudinal side plates is provided with a first longitudinal channel that matches the first layer of screen, and the two ends of the first layer of screen are respectively inserted into the two first longitudinal channels.

[0014] The bottom of the two facing sides of the second longitudinal side plates is provided with a second longitudinal channel that matches the second layer of screen. The two ends of the second layer of screen are respectively inserted into the two second longitudinal channels.

[0015] The bottom of the two opposing sides of the third longitudinal side plates is provided with a third longitudinal channel that matches the third layer of screen, and the two ends of the third layer of screen are respectively inserted into the two third longitudinal channels.

[0016] The bottom of the two opposing sides of the fourth longitudinal side plates is provided with a fourth longitudinal channel that matches the fourth layer of screen, and the two ends of the fourth layer of screen are respectively inserted into the two fourth longitudinal channels.

[0017] Furthermore, the first, second, third, and fourth layers of screens are all metal screens. The first layer of screen has an aperture of 20mm, the second layer has an aperture of 10mm, the third layer has an aperture of 5mm, and the fourth layer has an aperture of 2mm.

[0018] Furthermore, the first longitudinal side panel, the second longitudinal side panel, the third longitudinal side panel, the fourth longitudinal side panel, and the fifth longitudinal side panel are all made of wood and have the same size.

[0019] Furthermore, the first, second, third, and fourth transverse side panels are all made of wood and have the same dimensions.

[0020] Furthermore, the first longitudinal side plate, the second longitudinal side plate, the third longitudinal side plate, the fourth longitudinal side plate, and the fifth longitudinal side plate are at the same height as the first transverse side plate, the second transverse side plate, the third transverse side plate, and the fourth transverse side plate.

[0021] Furthermore, the fifth longitudinal side panel, the fifth transverse side panel, and the bottom panel are all made of wood. The length and width of the fifth transverse side panel are the same as those of the fourth transverse side panel, and the height of the fifth transverse side panel is half the height of the fourth transverse side panel.

[0022] Further, the contact surface height between the first transverse side plate and the first longitudinal side plate is half the height of the first transverse side plate. The contact surface height between the second transverse side plate and the second longitudinal side plate is half the height of the second transverse side plate. The contact surface height between the third transverse side plate and the third longitudinal side plate is half the height of the third transverse side plate. The contact surface height between the fourth transverse side plate and the fourth longitudinal side plate is half the height of the fourth transverse side plate.

[0023] The beneficial effects of this utility model are:

[0024] By combining four different mesh sizes of screens from top to bottom, recycled aggregates can be separated into different particle sizes in just one screening process. The aggregates of different particle sizes screened out by each layer of screens can be used in the preparation of different types of concrete. At the same time, since the screening process is carried out inside the screening unit, dust pollution caused by powder during screening is reduced, thus contributing to environmental protection and expanding the scope of application. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the internal structure of the screening component of this utility model.

[0027] Figure 3 This is a schematic diagram of the structure of the first layer screen assembly of this utility model.

[0028] Figure 4 This is a schematic diagram of the structure of the second layer screen assembly of this utility model.

[0029] Figure 5 This is a structural schematic diagram of the water accumulation layer component of this utility model.

[0030] Figure 6 This is a schematic diagram of the structure of the second longitudinal side plate of this utility model.

[0031] In the attached image:

[0032] 1-Base plate, 2-Wheel caster, 3-Fifth longitudinal side plate, 31-Fifth transverse side plate, 32-First protrusion, 4-Fourth longitudinal side plate, 41-Fourth transverse side plate, 42-Fourth layer screen, 5-Third longitudinal side plate, 51-Third transverse side plate, Third layer screen, 6-Second longitudinal side plate, 61-Second transverse side plate, 62-Second layer screen, 63-Second protrusion, 64-Second groove, 7-First longitudinal side plate, 71-First transverse side plate, 72-First layer screen. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0034] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0035] See Figures 1-6 This utility model discloses a recycled aggregate screening device for construction sites, comprising a screening component and a moving component. The screening component includes a first screen assembly, a second screen assembly disposed below the first screen assembly, a third screen assembly disposed below the second screen assembly, a fourth screen assembly disposed below the third screen assembly, and a water accumulation layer assembly disposed below the fourth screen assembly. The moving component includes four casters 2.

[0036] The first layer screen assembly includes two first longitudinal side plates 7, two first transverse side plates 71, and a first layer screen 72. The two first longitudinal side plates 7 are located at both ends of the first layer screen 72 in the transverse direction. The bottom of the facing sides of the two first longitudinal side plates 7 have first longitudinal channels that match the first layer screen 72, allowing the two ends of the first layer screen 72 to be inserted into the two first longitudinal channels. The two first transverse side plates 71 are located at both ends of the first layer screen 72 in the longitudinal direction, and the two ends of the two first transverse side plates 71 are fixed to the two ends of the two first longitudinal side plates 7 by long nails. A first groove (not shown in the figure) is provided at the bottom of the first longitudinal side plate 7. The first layer screen 72 is a metal screen with an aperture of 20mm.

[0037] The second-layer screen assembly includes two second longitudinal side plates 6, two second transverse side plates 61, and a second-layer screen 62. The two second longitudinal side plates 6 are located at both ends of the second-layer screen 62 in the transverse direction. The bottom of the facing sides of the two second longitudinal side plates 6 have second longitudinal channels that match the second-layer screen 62, into which the two ends of the second-layer screen 62 are respectively inserted. The two second transverse side plates 61 are located at both ends of the second-layer screen 62 in the longitudinal direction, and their ends are fixed to the ends of the two second longitudinal side plates 6 by long nails. A second protrusion 63 matching the size of the first groove is provided on the top of the second longitudinal side plate 6; the second protrusion 63 is integrally formed with the second longitudinal side plate 6. A second groove 64 is provided at the bottom of the second longitudinal side plate 6. The second-layer screen 62 is a metal screen with a 10mm aperture.

[0038] The third-layer screen assembly includes two third longitudinal side plates 5, two third transverse side plates 51, and a third-layer screen 52. The two third longitudinal side plates 5 are located at both ends of the third-layer screen 52 in the transverse direction. The bottom of the facing sides of the two third longitudinal side plates 5 have third longitudinal channels that match the third-layer screen 52, allowing the two ends of the third-layer screen 52 to be inserted into these channels. The two third transverse side plates 51 are located at both ends of the third-layer screen 52 in the longitudinal direction, and their ends are fixed to the ends of the two third longitudinal side plates 5 by long nails. A third protrusion (not shown in the figure) matching the size of the second groove 64 is provided on the top of the third longitudinal side plate 5; this third protrusion is integrally formed with the third longitudinal side plate 5. A third groove (not shown in the figure) is provided at the bottom of the third longitudinal side plate 5. The third-layer screen 52 is a metal screen with a 5mm aperture.

[0039] The fourth-layer screen assembly includes two fourth longitudinal side plates 4, two fourth transverse side plates 41, and a fourth-layer screen 42. The two fourth longitudinal side plates 4 are located at both ends of the fourth-layer screen 42 in the transverse direction. The bottom of the facing sides of the two fourth longitudinal side plates 4 have fourth longitudinal channels that match the fourth-layer screen 42, into which the two ends of the fourth-layer screen 42 are inserted. The two fourth transverse side plates 41 are located at both ends of the fourth-length direction of the fourth-layer screen 42, and their ends are fixed to the ends of the two fourth longitudinal side plates 4 by long nails. A fourth protrusion (not shown in the figure) matching the size of the third groove is provided on the top of the fourth longitudinal side plate 4; the fourth protrusion is integrally formed with the fourth longitudinal side plate 4. A fourth groove (not shown in the figure) is provided at the bottom of the fourth longitudinal side plate 4. The fourth-layer screen 42 is a metal screen with a 2mm aperture.

[0040] The water-collecting layer assembly includes two fifth longitudinal side plates 3, two fifth transverse side plates 31, and a base plate 1. The two fifth longitudinal side plates 3 are fixed to the transverse ends of the upper surface of the base plate 1, and the two fifth transverse side plates 31 are fixed to the longitudinal ends of the upper surface of the base plate 1. The fifth longitudinal side plates 3, the fifth transverse side plates 31, and the base plate 1 are all made of wood. Both the fifth longitudinal side plates 3 and the fifth transverse side plates 31 are nailed to the base plate 1 with long nails. The top of the fifth longitudinal side plate 3 is provided with a first protrusion 32 that matches the size of the fourth groove; the first protrusion 32 is integrally formed with the fifth longitudinal side plate 3.

[0041] The movable component is fixed to the bottom surface of the base plate 1, and four casters are fixed to the four corners of the base plate 1 respectively.

[0042] The first longitudinal side plate 7, the second longitudinal side plate 6, the third longitudinal side plate 5, the fourth longitudinal side plate 4, and the fifth longitudinal side plate 3 of this utility model are all made of wood and have the same size.

[0043] The first transverse side plate 71, the second transverse side plate 61, the third transverse side plate 51, and the fourth transverse side plate 41 of this utility model are all made of wood and have the same size.

[0044] The first longitudinal side plate 7, the second longitudinal side plate 6, the third longitudinal side plate 5, the fourth longitudinal side plate 4, and the fifth longitudinal side plate 3 have the same height as the first transverse side plate 71, the second transverse side plate 61, the third transverse side plate 51, and the fourth transverse side plate 41.

[0045] The length and width of the fifth transverse side plate 31 of this utility model are the same as those of the fourth transverse side plate 41, and the height of the fifth transverse side plate 31 is only half the height of the fourth transverse side plate 41.

[0046] The contact surface height between the first transverse side plate 71 and the first longitudinal side plate 7 is half the height of the first transverse side plate 71. The contact surface height between the second transverse side plate 61 and the second longitudinal side plate 6 is half the height of the second transverse side plate 61. The contact surface height between the third transverse side plate 51 and the third longitudinal side plate 5 is half the height of the third transverse side plate 51. The contact surface height between the fourth transverse side plate 41 and the fourth longitudinal side plate 4 is half the height of the fourth transverse side plate 41.

[0047] Before use, the screening device of this utility model first places the two fourth grooves of the fourth screen assembly onto the two first protrusions 32 of the water accumulation layer assembly to connect the fourth screen assembly and the water accumulation layer assembly below it. Then, the two third grooves of the third screen assembly are placed onto the two fourth protrusions of the fourth screen assembly to connect the third screen assembly and the fourth screen assembly below it. Similarly, the second and first screen assemblies are connected to the third and second screen assemblies respectively. After all the screen assemblies are connected and placed, the screening device is pushed next to the construction waste to be processed or to a mobile crushing equipment. Concrete fragments or crushed concrete fragments are poured into the screening device to start the screening operation.

[0048] The screening device of this invention can be used in conjunction with mobile crushing equipment or alone to quickly screen recycled aggregates of multiple particle sizes in one go, while reducing dust problems caused by excessive powder during screening operations.

[0049] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A recycled aggregate screening device for construction sites, characterized in that, It includes a screening component and a moving component; the screening component includes a first screen assembly, a second screen assembly disposed below the first screen assembly, a third screen assembly disposed below the second screen assembly, a fourth screen assembly disposed below the third screen assembly, and a water accumulation layer assembly disposed below the fourth screen assembly; the moving component includes 4 casters (2). The first layer screen assembly includes two first longitudinal side plates (7), two first transverse side plates (71) and a first layer screen (72); the two first longitudinal side plates (7) are disposed at both ends of the first layer screen (72) in the transverse direction, and the two first transverse side plates (71) are respectively disposed at both ends of the first layer screen (72) in the longitudinal direction, and the bottom of the first longitudinal side plate (7) is provided with a first groove. The second layer screen assembly includes two second longitudinal side plates (6), two second transverse side plates (61), and a second layer screen (62). The two second longitudinal side plates (6) are disposed at both ends of the second layer screen (62) in the transverse direction, and the two second transverse side plates (61) are respectively disposed at both ends of the second layer screen (62) in the longitudinal direction. The top of the second longitudinal side plate (6) is provided with a second protrusion (63) that matches the size of the first groove, and the bottom of the second longitudinal side plate (6) is provided with a second groove (64). The third layer screen assembly includes two third longitudinal side plates (5), two third transverse side plates (51), and a third layer screen (52). The two third longitudinal side plates (5) are disposed at both ends of the transverse direction of the third layer screen (52), and the two third transverse side plates (51) are respectively disposed at both ends of the longitudinal direction of the third layer screen (52). The top of the third longitudinal side plate (5) is provided with a third protrusion that matches the size of the second groove (64), and the bottom of the third longitudinal side plate (5) is provided with a third groove. The fourth layer screen assembly includes two fourth longitudinal side plates (4), two fourth transverse side plates (41), and a fourth layer screen (42). The two fourth longitudinal side plates (4) are disposed at both ends of the fourth layer screen (42) in the transverse direction, and the two fourth transverse side plates (41) are respectively disposed at both ends of the fourth layer screen (42) in the longitudinal direction. The top of the fourth longitudinal side plate (4) is provided with a fourth protrusion that matches the size of the third groove, and the bottom of the fourth longitudinal side plate (4) is provided with a fourth groove. The water accumulation layer assembly includes two fifth longitudinal side plates (3), two fifth transverse side plates (31), and a base plate (1); the two fifth longitudinal side plates (3) are fixed at both ends of the transverse direction on the upper surface of the base plate (1), and the two fifth transverse side plates (31) are fixed at both ends of the longitudinal direction on the upper surface of the base plate (1); the top of the fifth longitudinal side plate (3) is provided with a first protrusion (32) that matches the size of the fourth groove; the moving assembly is fixed to the bottom surface of the base plate (1), and the four universal wheels (2) are respectively fixed at the four corners of the base plate (1).

2. The recycled aggregate screening device for construction sites according to claim 1, characterized in that, The bottom of the two first longitudinal side plates (7) facing each other is provided with a first longitudinal channel that matches the first layer screen (72), and the two ends of the first layer screen (72) are respectively inserted into the two first longitudinal channels. The bottom of the two second longitudinal side plates (6) facing each other is provided with a second longitudinal channel that matches the second layer screen (62), and the two ends of the second layer screen (62) are respectively inserted into the two second longitudinal channels; The bottom of the two third longitudinal side plates (5) facing each other is provided with a third longitudinal channel that matches the third layer screen (52), and the two ends of the third layer screen (52) are respectively inserted into the two third longitudinal channels; The bottom of the two fourth longitudinal side plates (4) facing each other is provided with a fourth longitudinal channel that matches the fourth layer screen (42), and the two ends of the fourth layer screen (42) are respectively inserted into the two fourth longitudinal channels.

3. The recycled aggregate screening device for construction sites according to claim 2, characterized in that, The first layer screen (72), the second layer screen (62), the third layer screen (52) and the fourth layer screen (42) are all metal screens; the aperture of the first layer screen (72) is 20mm, the aperture of the second layer screen (62) is 10mm, the aperture of the third layer screen (52) is 5mm, and the aperture of the fourth layer screen (42) is 2mm.

4. The recycled aggregate screening device for construction sites according to claim 1, characterized in that, The first longitudinal side panel (7), the second longitudinal side panel (6), the third longitudinal side panel (5), the fourth longitudinal side panel (4) and the fifth longitudinal side panel (3) are all wooden boards and have the same size.

5. A recycled aggregate screening device for construction sites according to claim 4, characterized in that, The first transverse side panel (71), the second transverse side panel (61), the third transverse side panel (51), and the fourth transverse side panel (41) are all made of wood and have the same size.

6. A recycled aggregate screening device for construction sites according to claim 5, characterized in that, The first longitudinal side plate (7), the second longitudinal side plate (6), the third longitudinal side plate (5), the fourth longitudinal side plate (4) and the fifth longitudinal side plate (3) have the same height as the first transverse side plate (71), the second transverse side plate (61), the third transverse side plate (51) and the fourth transverse side plate (41).

7. A recycled aggregate screening device for construction sites according to claim 6, characterized in that, The fifth longitudinal side plate (3), the fifth transverse side plate (31) and the bottom plate (1) are all made of wood. The length and width of the fifth transverse side plate (31) are the same as those of the fourth transverse side plate (41), and the height of the fifth transverse side plate (31) is half the height of the fourth transverse side plate (41).

8. A recycled aggregate screening device for construction sites according to claim 7, characterized in that, The contact surface height between the first transverse side plate (71) and the first longitudinal side plate (7) is half that of the first transverse side plate (71); the contact surface height between the second transverse side plate (61) and the second longitudinal side plate (6) is half that of the second transverse side plate (61); the contact surface height between the third transverse side plate (51) and the third longitudinal side plate (5) is half that of the third transverse side plate (51); and the contact surface height between the fourth transverse side plate (41) and the fourth longitudinal side plate (4) is half that of the fourth transverse side plate (41).

Images