Building recycled aggregate screening device

Abstract

The utility model discloses a building recycled aggregate screening device which comprises a screening box, a screen assembly is arranged in the screening box, a feeding hopper is arranged at the upper end of the screening box, a shaft is fixed to the middle of the side face of the screen assembly, and the shaft is rotationally connected with the screening box. The screening box is connected with a turn-over mechanism used for driving the shaft to rotate so that the screen assembly can turn over. Compared with the prior art, the building recycled aggregate screening device has the beneficial effects that the building recycled aggregate screening device with the turnable screen mesh is designed, so that the problem that the screen mesh is difficult to dredge when being blocked is effectively solved, and the screening efficiency and the reliability of equipment are improved. When the screen mesh is blocked, the turnover mechanism can turn over the screen mesh, aggregate clamped in the screen holes faces downwards, an operator can beat and dredge the aggregate through the dredging window conveniently, and therefore it is guaranteed that the screening process is conducted smoothly.

Description

Technical Field

[0001] This utility model relates to the field of building aggregate screening technology, specifically a building recycled aggregate screening device. Background Technology

[0002] Recycled aggregates from crushed construction waste need to be screened to obtain aggregate products of different particle sizes to meet various construction needs. However, existing screening devices have some problems in use. A search revealed a screening device for recycled aggregates from construction waste, disclosed in Chinese Utility Model Patent Application No. 201920049551.5. This device includes a shell, a feed hopper at the top of the shell, a first screen inside the shell cavity, a vibrating motor between one end of the first screen and the inner wall of the shell, and a discharge port at the connection between the shell and the other end of the first screen.

[0003] In the aforementioned existing technology, when building aggregates are screened, the aggregates are easily stuck at the top of the mesh and cannot fall down, making the mesh easily blocked. The common way to clear the blockage is to use a brush to clean the surface of the screen. However, due to the hard texture of building aggregates, it is difficult to remove them from the mesh by sweeping when they are stuck in the mesh.

[0004] Therefore, there is an urgent need for a construction recycled aggregate screening device that can effectively solve the problem of screen clogging. This application was developed in this context. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a screening device for recycled aggregates in construction to solve the problems in the background technology.

[0006] This utility model provides the following technical solution: a building recycled aggregate screening device, including a screening box, a screen assembly inside the screening box, and a feed hopper at the upper end of the screening box. A shaft is fixed at the middle position of the side of the screen assembly, and the shaft is rotatably connected to the screening box. The screening box is connected to a flipping mechanism for driving the shaft to rotate so that the screen assembly can be flipped.

[0007] The screening box has a through-hole window on its side;

[0008] The inner wall of the screening box is provided with limiting structures on both sides for limiting the screen assembly. The screen assembly is inclined inside the screening box, and the side of the screening box is provided with a first discharge port at the lower end of the screen assembly.

[0009] Preferably, the screen assembly includes a fixed frame, which is fixedly connected to the shaft, and a screen is fixedly disposed on the inner side of the fixed frame, with a spring connecting the screen and the fixed frame.

[0010] Preferably, the flipping mechanism includes a motor fixedly connected to the screening box, and the output shaft of the motor is fixedly connected to the side of the fixed frame.

[0011] Preferably, the limiting structure includes a limiting block, the limiting block is provided with a limiting groove, and a telescopic cylinder is fixed between the limiting block and the inner wall of the screening box, and the side of the fixing frame is limited within the limiting groove.

[0012] Preferably, the inner wall of the screening box is provided with a hidden groove, and the limiting block is movably disposed in the hidden groove.

[0013] Preferably, the bottom of the screening box is equipped with casters.

[0014] Preferably, the lower end of the screening box is provided with an inclined guide plate, and the side of the screening box is provided with a second discharge port through the lower end of the inclined guide plate.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model's recycled aggregate screening device effectively solves the problem of screen blockage by designing a screen with a flip-up mechanism, thus improving screening efficiency and equipment reliability. When the screen is blocked, the flipping mechanism can flip the screen so that the aggregate stuck in the screen holes faces downwards, making it easier for operators to tap and clear the blockage through the unblocking window, thereby ensuring the smooth progress of the screening process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a frontal cross-sectional view of the present invention.

[0018] Figure 3 This is another three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 4 This utility model Figure 2 A diagram of the enlarged structure of A.

[0020] In the diagram: 1. Screening box; 101. Unblocking window; 2. Screen assembly; 21. Fixing frame; 22. Screen; 23. Spring; 3. Feed hopper; 4. Shaft; 5. Flipping mechanism; 6. Limiting structure; 61. Limiting block; 62. Telescopic cylinder; 7. First discharge port; 8. Hidden groove; 9. Moving wheel; 10. Inclined guide plate; 11. Second discharge port. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model discloses a screening device for recycled aggregate in construction, including a screening box 1. The screening box 1 is equipped with a screen assembly 2 for screening aggregate, and a feed hopper 3 is provided at the upper end of the screening box 1. A shaft 4 is fixed at the middle position of the side of the screen assembly 2. The shaft 4 is rotatably connected to the screening box 1, so that the screen assembly 2 can be rotated 360° inside the screening box 1. The screening box 1 is connected to a flipping mechanism 5 for driving the shaft 4 to rotate so that the screen assembly 2 can be flipped. By flipping the screen assembly 2 and then tapping the surface of the screen assembly 2, the aggregate stuck in the screen holes can be quickly shaken off. A drainage window 101 is provided through the side of the screening box 1. A door is installed in the drainage window 101 by a hinge. The other end of the door is installed by a hinge and is limited to the screening box 1 by a structure such as a buckle or a bolt.

[0023] The inner walls of the screening box 1 are provided with limiting structures 6 for limiting the screen assembly 2. The screen assembly 2 is inclined inside the screening box 1. The side of the screening box 1 is provided with a first discharge port 7 through the lower end of the screen assembly 2. The feed hopper 3 is correspondingly set at the upper part of the higher end of the screen assembly 2. After the aggregate is added to the screening box 1, it will fall to the higher end of the screen assembly 2 and then roll downward under the action of gravity. During the rolling process, smaller aggregates pass through the screen holes of the screen, while larger aggregates are discharged through the first discharge port 7.

[0024] With the above-described structure, when this utility model is in use, the aggregate to be screened is fed into the screening box 1 through the feed hopper 3. After the aggregate falls onto the surface of the screen assembly 2, it rolls downward and is screened by the screen assembly 2. The large aggregate particles that are screened out are discharged through the first discharge port 7. When the screen assembly 2 becomes clogged, the limiting structure 6 is first released from limiting the screen assembly 2. Then, the flipping mechanism 5 drives the shaft 4 to rotate and flip the screen assembly 2. In this way, the position of the aggregate that was originally stuck above the mesh of the screen assembly 2 is adjusted to below the mesh. At this time, the processing personnel can open the unblocking window 101 and use tools to tap the upper surface of the screen assembly 2 to shake off the aggregate stuck in the mesh. This effectively solves the problem of difficulty in unblocking the aggregate in the mesh of the screen when using a cleaning brush in the prior art.

[0025] The screen assembly 2 includes a fixed frame 21, with a screen 22 fixedly mounted on the inner side of the fixed frame 21. A spring 23 connects the screen 22 and the fixed frame 21. The fixed frame 21 is fixedly connected to the shaft 4, allowing the fixed frame 21 to flip inside the screening box 1. When the fixed frame 21 flips, the screen 22 is flipped so that the side that was originally facing upward and in direct contact with the aggregate faces downward. Through the setting of the spring 23, the screen 22 can shake on the fixed frame 21, which is beneficial for screening and for shaking out the aggregate stuck in the screen holes.

[0026] The flipping mechanism 5 includes a motor that is fixedly connected to the screening box 1, and the output shaft of the motor is fixedly connected to the side of the fixed frame 21.

[0027] The limiting structure 6 includes a limiting block 61 with a limiting groove. A telescopic cylinder 62 is fixed between the limiting block 61 and the inner wall of the screening box 1. The side of the fixed frame 21 is limited in the limiting groove. When the screen 22 needs to be flipped, the telescopic cylinder 62 shortens, causing the limiting block 61 to leave the side of the fixed frame 21, thus releasing the restriction on the screen 22. After the screen 22 is flipped, the telescopic cylinder 62 is extended, causing the limiting block 61 to move closer to the fixed frame 21, so that the two sides of the fixed frame 21 are engaged in the limiting grooves of the two limiting blocks 61 for limiting, thereby improving the installation stability of the fixed frame 21.

[0028] The inner wall of the screening box 1 is provided with a hidden groove 8, and the limiting block 61 is movably set in the hidden groove 8. The hidden groove 8 is mainly set to hide the telescopic cylinder 62 and ensure the integrity of the surface of the screen assembly 2, so that the aggregate can enter the first discharge port 7 along the surface of the screen assembly 2 and the part of the hidden groove 8.

[0029] To facilitate the movement of the screening box 1, casters 9 are installed at the bottom of the screening box 1.

[0030] In some embodiments, the lower end of the screening box 1 is provided with an inclined guide plate 10, and the side of the screening box 1 is provided with a second discharge port 11 through the lower end of the inclined guide plate 10. The aggregate screened by the screen 22 will fall onto the surface of the inclined guide plate 10, and then be discharged outward along the inclined surface of the inclined guide plate 10 through the second discharge port 11 for easy collection.

[0031] In summary, the building recycled aggregate screening device of this utility model receives aggregate through the feed hopper 3 during use. The aggregate rolls and is screened on the inclined screen assembly 2 under gravity. When the screen 22 is blocked due to aggregate jamming, the screen assembly 2 can be flipped by the flipping mechanism 5, turning the originally upward screening surface downward. Subsequently, the operator can tap the screen 22 through the unblocking window 101 to effectively clear the blocked screen holes, ensuring a smooth screening process, thereby improving screening efficiency and equipment reliability.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction recycled aggregate screening device, comprising a screening box (1), a screen assembly (2) is arranged in the screening box (1), and an inlet hopper (3) is arranged at the upper end of the screening box (1), characterized in that: The shaft (4) is fixed in the middle position of the side of the screen assembly (2), and is rotationally connected with the screening box (1); the screening box (1) is connected with a turnover mechanism (5) for driving the shaft (4) to rotate so as to turn over the screen assembly (2); The screening box (1) is provided with a dredging window (101) penetrating through the side thereof; The screening box (1) is provided with a limiting structure (6) for limiting the screen assembly (2) on both sides of the inner wall thereof; the screen assembly (2) is arranged obliquely in the interior of the screening box (1); and the side of the screening box (1) is provided with a first discharge port (7) penetrating through the lower end position of the screen assembly (2).

2. A construction recycled aggregate screening apparatus according to claim 1, characterised in that: The screen assembly (2) comprises a fixed frame (21) fixedly connected with the shaft (4); the inner side of the fixed frame (21) is provided with a screen (22); and the screen (22) and the fixed frame (21) are connected with a spring (23) therebetween.

3. A construction recycled aggregate screening apparatus according to claim 2, characterised in that: The turnover mechanism (5) comprises a motor fixedly connected with the screening box (1); and the output shaft of the motor is fixedly connected with the side of the fixed frame (21).

4. A construction recycled aggregate screening apparatus as claimed in claim 2, wherein: The limiting structure (6) comprises a limiting block (61) provided with a limiting groove; and a telescopic cylinder (62) is fixed between the limiting block (61) and the inner wall of the screening box (1); and the side of the fixed frame (21) is limited in the limiting groove.

5. A construction recycled aggregate screening apparatus according to claim 4, characterised in that: The inner wall of the screening box (1) is provided with a hidden groove (8); and the limiting block (61) is movably arranged in the hidden groove (8).

6. A construction recycled aggregate screening apparatus as claimed in claim 1, wherein: The bottom of the screening box (1) is provided with a moving wheel (9).

7. A construction recycled aggregate screening apparatus as claimed in claim 1, wherein: The inner lower end of the screening box (1) is provided with an inclined guide plate (10); and the side of the screening box (1) is provided with a second discharge port (11) penetrating through the lower end of the inclined guide plate (10). The bottom of the screening box (1) is provided with a moving wheel (9). The inner lower end of the screening box (1) is provided with an inclined guide plate (10); and the side of the screening box (1) is provided with a second discharge port (11) penetrating through the lower end of the inclined guide plate (10).

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