Screening device for recycled concrete processing

Abstract

The utility model relates to a screening device for recycled concrete processing belongs to concrete processing technical field. Mainly include frame, screen box, drive mechanism and cleaning component, screen box is installed on the frame through the sliding block and guide rail sliding, is equipped with rack at the bottom, drive mechanism includes motor, crank and connecting rod, is used for driving screen box reciprocating motion, cleaning component includes cleaning roller, gear and elastic brush head, gear engages with rack, and elastic brush head is accurately matched with screen hole, realizes automatic cleaning, the utility model discloses the linkage design through screen box and cleaning component, combines the transmission cooperation of rack and gear, has realized the automatic cleaning of screen surface blockage, has improved screening efficiency and equipment operation stability significantly, has avoided the tedious operation of manual cleaning effectively, has reduced the equipment downtime, has improved the continuity of production.

Description

Technical Field

[0001] This utility model belongs to the field of concrete processing technology, and specifically relates to a screening device for processing recycled concrete. Background Technology

[0002] In the field of recycled concrete processing, screening devices are important equipment for separating sand, gravel, and impurities, and their performance directly affects the production efficiency and quality of recycled concrete.

[0003] Existing screening devices typically use vibration or reciprocating motion to screen materials and separate sand and gravel from impurities. However, in actual use, the screens are prone to clogging due to the accumulation or embedding of sand and gravel particles during the separation of impurities. These screening devices often lack effective self-cleaning functions and cannot remove particles clogging the screen holes in time, resulting in reduced screening efficiency and the need for frequent shutdowns for cleaning, which seriously affects production continuity and efficiency. Utility Model Content

[0004] To overcome the problems of existing screening devices that easily cause screen clogging during impurity separation and lack effective self-cleaning functions, failing to promptly remove particles clogging the screen holes, leading to decreased screening efficiency and requiring frequent shutdowns for cleaning, thus affecting production continuity and efficiency, this utility model provides a screening device for recycled concrete processing. Through the linkage design of the screen box and cleaning components, combined with the transmission cooperation of rack and pinion gears, automatic cleaning of clogging materials on the screen surface is achieved, significantly improving screening efficiency, effectively avoiding the tedious operation of manual cleaning, reducing equipment downtime, and improving production continuity. The precise matching of the elastic brush head with the screen holes further enhances the cleaning effect, thereby meeting the high-efficiency screening requirements in the recycled concrete processing process.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A screening device for recycled concrete processing mainly includes a frame, a screen box, a drive mechanism, and a cleaning component. The screen box is slidably installed on the frame, and a rack is fixed on one side of the bottom end of the screen box. The length direction of the rack is consistent with the length direction of the screen box. A drive mechanism for driving the screen box to reciprocate is installed on the frame. The cleaning component is installed on the frame and located at the bottom of the screen box. The cleaning component includes a cleaning roller, a gear, and elastic brush heads. The cleaning rollers are arranged in an array along the length direction of the frame. The ends of the cleaning rollers are fixed to the frame through bearing seats. Gears that mesh with the rack are installed at the ends of the cleaning rollers. Multiple sets of elastic brush heads that contact the bottom of the screen box are equidistantly arranged on the surface of the cleaning rollers along their axial direction.

[0006] The bottom of the screen box is uniformly provided with screen holes of a straight groove structure. The elastic brush head corresponds to the screen hole, and its end extends into the screen hole. Its diameter is adapted to the diameter of the screen hole on the screen box; to ensure that sand and gravel particles embedded in the screen hole can be completely removed during the cleaning process.

[0007] The drive mechanism includes a motor, a crank, and a connecting rod. The motor is mounted on the frame, one end of the crank is connected to the motor output shaft, and the other end is hinged to the side of the screen box via the connecting rod. The motor drives the crank to rotate, which in turn drives the screen box to reciprocate linearly along the guide rail, thereby achieving efficient screening of materials.

[0008] The screen box has sliders on both sides, and guide rails adapted to the sliders are provided at corresponding positions on the frame. The screen box is slidably connected to the guide rails through the sliders. The cooperative design of the sliders and guide rails effectively ensures the stability and accuracy of the screen box movement and reduces the problem of reduced screening efficiency caused by shaking.

[0009] The elastic brush head is made of wear-resistant material; it can maintain good elasticity and durability during long-term use, extend the service life of the cleaning components, and ensure the continuous and stable cleaning effect.

[0010] The screen box is provided with a discharge chute at the end away from the drive mechanism, and a collection chute with an inclined bottom is installed on the frame. The collection chute is located at the bottom of the screen box, which facilitates the collection and discharge of the screened material.

[0011] The beneficial effects of this utility model are:

[0012] This invention achieves automatic cleaning of blockages on the screen surface through the linkage design of the screen box and cleaning components, combined with the transmission cooperation of rack and pinion. This significantly improves screening efficiency and equipment operation stability, effectively avoids the tedious operation of manual cleaning, reduces equipment downtime, and improves production continuity. The precise matching of the elastic brush head and the screen holes further enhances the cleaning effect, thereby meeting the needs of high-efficiency screening in the process of recycled concrete processing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the cleaning component installation state of this utility model.

[0015] Figure 3 This is a schematic diagram of the drive mechanism of this utility model.

[0016] Figure 4 yes Figure 1 A magnified view of a section at point B.

[0017] Figure 5 yes Figure 2 A magnified view of a portion of point A in the middle.

[0018] The attached diagram is labeled as follows: 1. Frame; 2. Screen box; 3. Drive mechanism; 4. Cleaning assembly; 5. Rack; 6. Cleaning roller; 7. Gear; 8. Flexible brush head; 9. Screen hole; 10. Motor; 11. Crank; 12. Connecting rod; 13. Slider; 14. Guide rail; 15. Discharge chute; 16. Collection chute. Detailed Implementation

[0019] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0020] This utility model discloses a screening device for recycled concrete processing. The screening device mainly includes a frame 1, a screen box 2, a drive mechanism 3, and a cleaning component 4. The screen box 2 is installed on the frame 1 through the cooperation of a slider 13 and a guide rail 14. The slider 13 is fixed on both sides of the screen box 2, while the guide rail 14 is set at the corresponding position on the frame 1. The sliding connection design between the two ensures the stability and accuracy of the screen box 2 during reciprocating motion. The bottom of the screen box 2 is evenly provided with screen holes 9 with straight groove structure for separating particles of different sizes in recycled concrete. A rack 5 is fixed on one side of the bottom end of the screen box 2. The length direction of the rack 5 is consistent with the length direction of the screen box 2. The rack 5 is used to mesh with the gear 7 in the cleaning component 4, thereby realizing the linkage design between the screen box 2 and the cleaning component 4.

[0021] The drive mechanism 3 includes a motor 10, a crank 11, and a connecting rod 12. The motor 10 is fixedly mounted on the frame 1. One end of the crank 11 is connected to the output shaft of the motor 10, and the other end is hinged to the side of the screen box 2 via the connecting rod 12. The motor 10 drives the crank 11 to rotate, which in turn drives the connecting rod 12 to push the screen box 2 to reciprocate linearly along the guide rail 14, causing the material in the screen box 2 to continuously tumble above the screen holes 9, thereby improving the screening efficiency. The motor 10 is a variable frequency speed control motor, which allows users to adjust the motor speed according to actual production needs, thereby controlling the reciprocating frequency of the screen box 2 to meet the screening requirements of materials with different particle sizes.

[0022] The cleaning assembly 4 is mounted on the frame 1 and located at the bottom of the screen box 2. It is used to remove sand and gravel particles embedded in the screen holes 9 to prevent screen blockage. The cleaning assembly 4 includes cleaning rollers 6, gears 7, and flexible brush heads 8. The cleaning rollers 6 are arranged in an array along the length of the frame 1. The end of each cleaning roller 6 is fixed to the frame 1 by a bearing seat to ensure that the cleaning roller 6 can rotate freely. The end of the cleaning roller 6 is equipped with a gear 7, which meshes with a rack 5. When the screen box 2 reciprocates under the drive of the drive mechanism 3, the rack 5 moves accordingly. It meshes with gear 7, thereby driving the cleaning roller 6 to rotate synchronously; multiple sets of elastic brush heads 8 are equidistantly arranged on the surface of the cleaning roller 6 along its axial direction. These elastic brush heads 8 correspond one-to-one with the screen holes 9 at the bottom of the screen box 2, and their ends extend into the screen holes 9. Their diameter is adapted to the aperture of the screen holes 9, ensuring that the elastic brush heads 8 can completely remove the sand and gravel particles embedded in the screen holes 9 during the cleaning process; the elastic brush heads 8 are made of wear-resistant material, which can maintain good elasticity and durability during long-term use, thus extending the service life of the cleaning component 4.

[0023] In actual operation, when the motor 10 starts, the crank 11 begins to rotate and pushes the screen box 2 to reciprocate linearly along the guide rail 14 through the connecting rod 12. The reciprocating motion of the screen box 2 causes the rack 5 to move accordingly and mesh with the gear 7, thereby driving the cleaning roller 6 to rotate synchronously. The elastic brush head 8 on the cleaning roller 6 continuously contacts the screen hole 9 during the rotation, removing sand and gravel particles embedded in the screen hole 9, ensuring that the screen box 2 is always unobstructed. This linkage design realizes the automatic cleaning of blockages on the screen surface, significantly improving screening efficiency and equipment operation stability, effectively avoiding the tedious operation of manual cleaning, reducing equipment downtime, and improving production continuity.

[0024] The screen box 2 is provided with a discharge trough 15 at the end away from the drive mechanism 3. A collection trough 16 with an inclined bottom is installed on the frame 1 and the collection trough 16 is located at the bottom of the screen box 2. The collection trough 16 facilitates the collection and discharge of the screened material and can prevent the falling material from splashing everywhere.

[0025] In summary, this utility model achieves the linkage design between the screen box 2 and the cleaning component 4 through the transmission cooperation of the rack 5 and the gear 7. Combined with the precise matching of the elastic brush head 8 and the screen hole 9, it effectively solves the problems of decreased screening efficiency and frequent shutdowns for cleaning caused by screen blockage in the existing screening device during the processing of recycled concrete. Through the cooperation of the slider 13 and the guide rail 14, the stability and accuracy of the movement of the screen box 2 are further enhanced, meeting the requirements of high-efficiency screening. It not only significantly improves screening efficiency and equipment operation stability, but also effectively avoids the tedious operation of manual cleaning, reduces equipment downtime, and further improves the continuity of production.

[0026] Work process:

[0027] First, the recycled concrete material to be screened is poured into the screen box 2. After starting the motor 10, the motor 10 drives the screen box 2 to reciprocate linearly along the guide rail 14 via the crank 11 and connecting rod 12. During this process, the material continuously tumbles and is screened within the screen box 2. Material that meets the particle size requirements falls into the collection trough 16 through the screen holes 9, while large particles that do not meet the requirements remain in the screen box 2 and are discharged through the discharge trough 15. At the same time, the rack 5 moves synchronously with the reciprocating motion of the screen box 2 and, through meshing with the gear 7, causes the cleaning roller 6 to rotate. The elastic brush head 8 on the cleaning roller 6 cleans the screen holes 9 in real time during rotation, removing the sand and gravel particles that clog the screen holes 9, thereby ensuring the continuity and efficiency of the screening process. The cooperation between the slider 13 and the guide rail 14 further enhances the stability of the screen box 2's operation.

[0028] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A screening device for processing recycled concrete, characterized in that: The aforementioned screening device for processing recycled concrete includes a frame (1), a screen box (2), a drive mechanism (3), and a cleaning component (4). The screen box (2) is slidably installed on the frame (1). A rack (5) is fixed on one side of the bottom end of the screen box (2). The length direction of the rack (5) is consistent with the length direction of the screen box (2). A drive mechanism (3) for driving the screen box (2) to reciprocate is installed on the frame (1). The cleaning component (4) is installed on the frame (1) and located at the bottom of the screen box (2). The cleaning component (4) includes a cleaning roller (6), a gear (7), and an elastic brush head (8). The cleaning roller (6) is arranged in an array along the length direction of the frame (1). The end of the cleaning roller (6) is fixed on the frame (1) through a bearing seat. A gear (7) that meshes with the rack (5) is installed at the end of the cleaning roller (6). Multiple sets of elastic brush heads (8) that contact the bottom of the screen box (2) are equidistantly arranged on the surface of the cleaning roller (6) along its axial direction.

2. The screening device for processing recycled concrete as described in claim 1, characterized in that: The bottom of the screen box (2) is uniformly provided with screen holes (9) with straight groove structure. The elastic brush head (8) corresponds to the screen hole (9), and its end extends into the screen hole (9). Its diameter is adapted to the hole diameter of the screen hole (9).

3. A screening device for processing recycled concrete as described in claim 1 or 2, characterized in that: The drive mechanism (3) includes a motor (10), a crank (11) and a connecting rod (12). The motor (10) is mounted on the frame (1). One end of the crank (11) is connected to the output shaft of the motor (10), and the other end is hinged to the side of the screen box (2) through the connecting rod (12).

4. A screening device for processing recycled concrete as described in claim 3, characterized in that: The screen box (2) is provided with sliders (13) on both sides, and the frame (1) is provided with guide rails (14) that are compatible with the sliders (13) at the corresponding positions. The screen box (2) is slidably connected to the guide rails (14) through the sliders (13).

5. A screening device for processing recycled concrete as described in any one of claims 1 or 2, characterized in that: The elastic brush head (8) is made of wear-resistant material.

6. A screening device for processing recycled concrete as described in claim 3, characterized in that: The screen box (2) is provided with a discharge trough (15) at one end away from the drive mechanism (3), and a collection trough (16) with an inclined bottom is installed on the frame (1), and the collection trough (16) is located at the bottom of the screen box (2).

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