Screening device for recycled fine aggregate preparation

Abstract

The utility model discloses a screening device for recycled fine aggregate preparation, and relates to the technical field of aggregate preparation, the screening device comprises a working box, the top and the bottom of an inner cavity of the working box are both movably provided with screening assemblies, inner cavities of the screening assemblies are fixedly provided with screens, and the front side and the rear side of each screening assembly are both fixedly provided with transmission assemblies. According to the screening device for recycled fine aggregate preparation, a gear is arranged to start to rotate, so that a third rotating rod is driven to start to rotate, a first bevel gear starts to rotate, the first bevel gear is driven to rotate, a second bevel gear meshed with the first bevel gear is driven to rotate, a fourth rotating rod and a screw rod are driven to rotate, and a supporting plate starts to descend; and through limiting of an arranged limiting frame and a sliding block, two connecting rods are driven to unfold, a cleaning brush is pushed to synchronously move outwards, mesh holes of a screen are cleaned, and cleaning of multiple layers of filter screens in the device is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of aggregate preparation in construction engineering, in particular to a screening device for preparing recycled fine aggregate. Background Art

[0002] Aggregate is also called "aggregate", which is a granular material that plays a role of skeleton and filling in concrete and mortar. There are two types of aggregate: fine aggregate and coarse aggregate. The diameter of fine aggregate particles is between 0.16 and 5 mm. Generally, natural sand is used, such as river sand, sea sand and valley sand. When natural sand is lacking, artificial sand ground from hard rocks can also be used; the diameter of coarse aggregate particles is greater than 5 mm, and crushed stone and pebbles are commonly used. Under the same conditions, the strength of crushed stone concrete is higher than that of pebble concrete, but crushed stone is made by crushing rocks, and the cost is higher than that of pebbles;

[0003] Fine aggregates in aggregate preparation are generally crushed again using ball mills. Secondary screening separates the crushed aggregates into high-quality recycled aggregates of 5-20mm, which can be used in C25-C30 concrete manufacturing. Tertiary screening separates high-quality recycled fine aggregates of 0.15mm-5mm and fine powders below 0.15mm.

[0004] However, due to the existing screening device for preparing fine aggregate, after multiple screening of the aggregate, some aggregate may be stuck in the gaps in the screen, and the screening nets of the existing multiple screening devices are distributed in a linear array layer by layer, and it is rather cumbersome to clean the bottom layer of the screen. In this regard, we propose a screening device for preparing recycled fine aggregate to solve the above problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a screening device for preparing recycled fine aggregate, which solves the problem that after multiple screenings of the aggregates, some aggregates may be stuck in the gaps in the screen, while the screening nets of the existing multiple screening devices are distributed in a linear array of layers, making it cumbersome to clean the bottom screen.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: A screening device for preparing recycled fine aggregate, comprising a working box, the top and bottom of the inner cavity of the working box are movably provided with screening components, the inner cavity of the screening component is fixed with a screen, and the front and rear sides of the screening component are fixed with transmission components;

[0007] The number of the screening components is two, and the front and rear sides of the top of the bottom screening component are fixedly connected with telescopic components, the top of the telescopic component is fixedly connected to the bottom of the top screening component, and the left and right sides of the front and rear surfaces of the screening component are fixedly provided with limit frames, the front surface of the limit frame is penetrated by a slide groove, the inner cavity of the slide groove is slidably connected with a slider, one end of the slider is fixedly connected with a connecting frame, the inner cavity of the connecting frame is movably connected with a first rotating rod through a bearing, a connecting rod is fixedly sleeved on the surface of the first rotating rod, the inner cavity of the connecting rod is movably connected with the first fixed frame through a bearing, and the inner cavity of the first fixed frame is movably connected with the second rotating rod through a bearing;

[0008] The transmission assembly includes a fixed plate, the inner cavity of the fixed plate is movably connected to a third rotating rod through a bearing, the surface of the third rotating rod is fixedly sleeved with a gear, and the front and rear sides of the bottom screening assembly are fixedly connected to a toothed plate, and the surface of the toothed plate is meshed with the surface of the gear.

[0009] Preferably, one end of the third rotating rod is fixedly connected to the first bevel gear, the top of the first bevel gear is meshed with the second bevel gear, the top of the second bevel gear is fixedly provided with a fourth rotating rod, the top of the fourth rotating rod is fixedly connected to a screw, the surface of the screw is threadedly sleeved with a support plate, the top of the top screening assembly is fixedly connected to a mounting frame, the inner side of the mounting frame is movably connected to a connecting rod, and the surface of the connecting rod is fixedly connected to the inner cavity of the second rotating rod.

[0010] Preferably, a moving block is fixedly provided on the outer surface of the second rotating rod, the surface of the moving block is slidably connected to the inner cavity of the mounting frame, and the inner surface of the supporting plate is fixedly connected to the outer side of the moving block.

[0011] Preferably, the number of the first fixing frames is two, and the top of the first fixing frame at the bottom is fixedly connected to the bottom of the screening assembly at the bottom.

[0012] Preferably, the top of the fixed plate is fixedly connected to the bottom of the bottom screening assembly.

[0013] Preferably, a cleaning brush is fixedly provided at the bottom of the connecting frame, and the bottom of the cleaning brush is in contact with the top of the screen.

[0014] Preferably, a control mechanism is fixedly provided on the front side of the working box, the output end of the control mechanism is electrically connected to the input end of the screening assembly and the telescopic assembly, and support legs are fixedly provided on the left and right sides of the front and rear sides of the working box.

[0015] Beneficial Effects

[0016] The utility model provides a screening device for preparing recycled fine aggregate. Compared with the prior art, it has the following beneficial effects:

[0017] The screening device for preparing recycled fine aggregate is unfolded by two connecting rods at the bottom, which push the cleaning brush to move outward synchronously to clean the mesh of the screen. When the top screening assembly descends, the gear and the toothed plate are arranged, so that the gear starts to rotate, thereby driving the third rotating rod to rotate, thereby driving the first bevel gear to rotate, driving the second bevel gear meshing therewith to rotate, driving the fourth rotating rod and the screw to rotate, so that the support plate starts to descend, driving the moving block and the first fixed frame at the top to descend, and through the limit frame and the slider, the two connecting rods are driven to unfold, and the cleaning brush is pushed to move outward synchronously to clean the mesh of the screen, thereby completing the cleaning of the multi-layer filter in the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main view of the overall structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 Main view of internal structure;

[0020] Figure 3 For this utility model Figure 2 The general assembly drawing of the cleaning component structure;

[0021] Figure 4 This is the front view of the transmission component structure of the utility model.

[0022] In the figure: 1. working box; 2. supporting legs; 3. control mechanism; 4. mounting frame; 5. screening assembly; 6. screen; 7. telescopic assembly; 8. transmission assembly; 9. limiting frame; 10. slide groove; 11. connecting frame; 12. first rotating rod; 13. cleaning brush; 14. sliding block; 15. connecting rod; 16. second rotating rod; 17. first fixed frame; 18. transmission assembly; 801. supporting plate; 802. screw; 803. moving block; 804. tooth plate; 805. fourth rotating rod; 806. second bevel gear; 807. first bevel gear; 808. fixed plate; 809. third rotating rod; 810. gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4The utility model provides a technical solution, which specifically includes the following embodiments:

[0025] Embodiment 1:

[0026] A screening device for preparing recycled fine aggregate comprises a working box 1, a screening assembly 5 is movably provided at the top and bottom of the inner cavity of the working box 1, a screen 6 is fixedly provided in the inner cavity of the screening assembly 5, and a transmission assembly 8 is fixedly provided at the front and rear sides of the screening assembly 5;

[0027] There are two screening assemblies 5. The front and rear sides of the top of the bottom screening assembly 5 are fixedly connected with telescopic assemblies 7. The top of the telescopic assembly 7 is fixedly connected to the bottom of the top screening assembly 5. The left and right sides of the front and rear surfaces of the screening assembly 5 are fixedly provided with limit frames 9. A slide groove 10 is provided through the front surface of the limit frame 9. A slider 14 is slidably connected to the inner cavity of the slide groove 10. One end of the slider 14 is fixedly connected to a connecting frame 11. The inner cavity of the connecting frame 11 is movably connected to a first rotating rod 12 through a bearing. A connecting rod 15 is fixedly sleeved on the surface of the first rotating rod 12. The inner cavity of the connecting rod 15 is movably connected to a first fixed frame 17 through a bearing. The inner cavity of the first fixed frame 17 is movably connected to a second rotating rod 16 through a bearing.

[0028] The transmission assembly 8 includes a fixed plate 808, the inner cavity of the fixed plate 808 is movably connected to a third rotating rod 809 through a bearing, and a gear 810 is fixedly sleeved on the surface of the third rotating rod 809. The front and rear sides of the bottom screening assembly 5 are fixedly connected to a tooth plate 804, and the surface of the tooth plate 804 is meshed with the surface of the gear 810.

[0029] One end of the third rotating rod 809 is fixedly connected to the first bevel gear 807, the top of the first bevel gear 807 is meshed with the second bevel gear 806, the top of the second bevel gear 806 is fixedly provided with a fourth rotating rod 805, the top of the fourth rotating rod 805 is fixedly connected to the screw 802, the surface of the screw 802 is threadedly sleeved with a support plate 801, the top of the screening assembly 5 is fixedly connected to the mounting frame 4, the inner side of the mounting frame 4 is movably connected to the connecting rod 18, and the surface of the connecting rod 18 is fixedly connected to the inner cavity of the second rotating rod 16;

[0030] By starting the telescopic assembly 7, the telescopic assembly 7 begins to retract, so that the top screening assembly 5 begins to descend, and the two connecting rods 15 are driven to expand through the limit frame 9 and the slider 14, and the cleaning brush 13 is pushed to move outward synchronously to clean the mesh of the screen 6. When the top screening assembly 5 descends, the gear 810 and the toothed plate 804 are set at this time, so that the gear 810 starts to rotate, thereby driving the third rotating rod 809 to start rotating, so that the first bevel gear 807 starts to rotate, thereby driving the first bevel gear 807 to rotate, driving the second bevel gear 806 meshing therewith to rotate, driving the fourth rotating rod 805 and the screw 802 to rotate, so that the support plate 801 begins to descend, driving the moving block 803 and the first fixed frame 17 at the top to descend, and the limit frame 9 and the slider 14 are set, so that the two connecting rods 15 are driven to expand, and the cleaning brush 13 is pushed to move outward synchronously to clean the mesh of the screen 6, and the cleaning of the multi-layer filter in the device is completed.

[0031] A moving block 803 is fixedly disposed on the outer surface of the second rotating rod 16, the surface of the moving block 803 is slidably connected to the inner cavity of the mounting frame 4, and the inner surface of the supporting plate 801 is fixedly connected to the outer side of the moving block 803;

[0032] By setting the moving block 803, the first fixing frame 17 at the top is limited and can only move horizontally up and down, which is convenient for cleaning the screen 6.

[0033] There are two first fixing frames 17, and the top of the first fixing frame 17 at the bottom is fixedly connected to the bottom of the screening assembly 5 at the bottom;

[0034] By providing two groups of first fixing frames 17, four groups of cleaning brushes 13 are synchronously moved outward to clean the meshes of the screen 6, thereby completing the cleaning of the multi-layer filter screens in the device.

[0035] The top of the fixed plate 808 is fixedly connected to the bottom of the bottom screening assembly 5 .

[0036] A cleaning brush 13 is fixedly provided at the bottom of the connecting frame 11, and the bottom of the cleaning brush 13 is in contact with the top of the screen 6;

[0037] The bottom of the cleaning brush 13 is in contact with the top of the screen 6 , and when the cleaning brush 13 moves outward synchronously, the mesh of the screen 6 is cleared.

[0038] A control mechanism 3 is fixedly provided on the front side of the working box 1, and the output end of the control mechanism 3 is electrically connected to the input end of the screening assembly 5 and the telescopic assembly 7. Support legs 2 are fixedly provided on both the left and right sides of the front and rear sides of the working box 1;

[0039] By setting up the control mechanism 3, the use of the device can be controlled, which is convenient for screening bone powder.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] During operation, when the screen 6 is clogged, the telescopic assembly 7 is started and the telescopic assembly 7 begins to retract, so that the top screening assembly 5 begins to descend, and the two connecting rods 15 are driven to unfold through the limit frame 9 and the slider 14, and the cleaning brush 13 is pushed to move outward synchronously to clean the mesh of the screen 6. At the same time, the top screening assembly 5 descends, and the gear 810 and the toothed plate 804 are set at this time, so that the gear 810 starts to rotate, thereby driving the third rotating rod 809 to start rotating, so that the first The bevel gear 807 starts to rotate, thereby driving the first bevel gear 807 to rotate, driving the second bevel gear 806 meshing therewith to rotate, driving the fourth rotating rod 805 and the screw 802 to rotate, so that the support plate 801 starts to descend, driving the moving block 803 and the first fixed frame 17 on the top to descend, and through the limiting of the set limit frame 9 and the slider 14, the two connecting rods 15 are driven to unfold, pushing the cleaning brush 13 to move outward synchronously, cleaning the mesh of the screen 6, and completing the cleaning of the multi-layer filter in the device.

Claims

1. A screening device for preparing recycled fine aggregate, comprising a working box (1), characterized in that: The top and bottom of the inner cavity of the working box (1) are both movably provided with a screening assembly (5), the inner cavity of the screening assembly (5) is fixedly provided with a screen (6), and the front and rear sides of the screening assembly (5) are both fixedly provided with a transmission assembly (8); The number of the screening assemblies (5) is two, the front and rear sides of the top of the bottom screening assembly (5) are fixedly connected with telescopic assemblies (7), the top of the telescopic assembly (7) is fixedly connected to the bottom of the top screening assembly (5), the left and right sides of the front and rear surfaces of the screening assembly (5) are fixedly provided with limit frames (9), the front surface of the limit frame (9) is penetrated with a slide groove (10), the inner cavity of the slide groove (10) is slidably connected with a slider (14), one end of the slider (14) is fixedly connected with a connecting frame (11), the inner cavity of the connecting frame (11) is movably connected with a first rotating rod (12) through a bearing, the surface of the first rotating rod (12) is fixedly sleeved with a connecting rod (15), the inner cavity of the connecting rod (15) is movably connected with a first fixed frame (17) through a bearing, and the inner cavity of the first fixed frame (17) is movably connected with a second rotating rod (16) through a bearing; The transmission assembly (8) includes a fixed plate (808), the inner cavity of the fixed plate (808) is movably connected to a third rotating rod (809) via a bearing, the surface of the third rotating rod (809) is fixedly sleeved with a gear (810), and the front and rear sides of the bottom screening assembly (5) are fixedly connected to a toothed plate (804), and the surface of the toothed plate (804) is meshed with the surface of the gear (810).

2. A screening device for preparing recycled fine aggregate according to claim 1, characterized in that: One end of the third rotating rod (809) is fixedly connected to the first bevel gear (807), the top of the first bevel gear (807) is meshed with the second bevel gear (806), the top of the second bevel gear (806) is fixedly provided with a fourth rotating rod (805), the top of the fourth rotating rod (805) is fixedly connected to a screw rod (802), the surface of the screw rod (802) is threadedly sleeved with a support plate (801), the top of the screening assembly (5) is fixedly connected to a mounting frame (4), the inner side of the mounting frame (4) is movably connected to a connecting rod (18), and the surface of the connecting rod (18) is fixedly connected to the inner cavity of the second rotating rod (16).

3. A screening device for preparing recycled fine aggregate according to claim 2, characterized in that: A moving block (803) is fixedly provided on the outer surface of the second rotating rod (16), the surface of the moving block (803) is slidably connected to the inner cavity of the mounting frame (4), and the inner surface of the support plate (801) is fixedly connected to the outer side of the moving block (803).

4. A screening device for preparing recycled fine aggregate according to claim 1, characterized in that: The number of the first fixing frames (17) is two, and the top of the first fixing frame (17) at the bottom is fixedly connected to the bottom of the screening assembly (5) at the bottom.

5. A screening device for preparing recycled fine aggregate according to claim 1, characterized in that: The top of the fixed plate (808) is fixedly connected to the bottom of the bottom screening assembly (5).

6. A screening device for preparing recycled fine aggregate according to claim 1, characterized in that: A cleaning brush (13) is fixedly provided at the bottom of the connection frame (11), and the bottom of the cleaning brush (13) is in contact with the top of the screen (6).

7. A screening device for preparing recycled fine aggregate according to claim 1, characterized in that: A control mechanism (3) is fixedly provided on the front side of the working box (1); an output end of the control mechanism (3) is electrically connected to input ends of the screening assembly (5) and the telescopic assembly (7); and support legs (2) are fixedly provided on both the left and right sides of the front and rear sides of the working box (1).

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