A sand screening device for building construction projects

Abstract

This utility model relates to the field of construction machinery and discloses a sand screening device for construction projects. It includes a base, a screen box fixedly connected to the top of the base, a locking component on the outer wall of the screen box, a dustproof component on the top of the screen box, and a screen mesh inside the screen box. The locking component includes a pull rod, the outer wall of which is slidably connected to the inner wall of the screen box. A slot is formed inside the screen mesh, and the outer wall of the pull rod is slidably connected to the inner wall of the slot. A limit block is fixedly connected to the inner wall of the pull rod. In this utility model, the limit block is first rotated by turning the rotating handle, and then the pull rod is reset by the spring's return, achieving the effect of fixing the screen mesh. This solves the problem of cumbersome and time-consuming installation steps when traditional screen meshes rely on bolt fixing, and effectively solves the problem of needing to disassemble and install multiple sets of bolts one by one, which is complex in traditional screen mesh fixing, thus improving the convenience of operation.

Description

Technical Field

[0001] This utility model relates to the field of construction machinery, and in particular to a sand screening device for construction projects. Background Technology

[0002] In the field of construction engineering, sand screening is a crucial step in aggregate processing, and the performance of the sand screening equipment directly affects the efficiency and quality of sand screening. High-quality sand screening equipment should possess characteristics such as high-efficiency screening, stable screen fixing, and ease of maintenance and replacement to meet the needs of construction projects for rapid screening of sand and gravel of different particle sizes, ensuring the material supply for subsequent processes such as concrete mixing and wall construction. As the core screening component of the sand screening equipment, the ease and efficiency of its fixing method significantly impacts the continuity of the entire sand screening operation and the construction progress.

[0003] Existing sand screening devices used in construction projects mostly employ a multi-layered screen structure. A motor drives an eccentric block to rotate, generating vibration that causes the material inside the screen box to continuously jump and move on the screen. Different screen apertures are used to classify and screen the sand and gravel. This device uses vibration to ensure full contact between the material and the screen; smaller particles of sand and gravel fall through the screen openings, while larger particles are discharged along the direction of screen movement, thus completing the sand and gravel screening process.

[0004] However, traditional sand screening devices mainly rely on bolts to fix the screen. When installing the screen, the operator needs to use tools to align the bolt holes on the screen and the screen box one by one, and then repeatedly tighten multiple sets of bolts. The whole installation process is cumbersome and time-consuming, which greatly affects the installation efficiency of the sand screening device and thus delays the overall progress of the construction. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sand screening device for building construction projects, which aims to improve the problem of the traditional screen fixing process requiring the disassembly and installation of multiple sets of bolts one by one, which is complicated in terms of operation steps.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sand screening device for building construction engineering, including a base, a screen box fixedly connected to the top of the base, a locking component provided on the outer wall of the screen box, a dustproof component provided on the top of the screen box, and a screen mesh provided inside the screen box;

[0007] The locking assembly includes a pull rod, the outer wall of which is slidably connected to the inner wall of the screen box. A slot is provided inside the screen mesh, and the outer wall of the pull rod is slidably connected to the inner wall of the slot. A limit block is fixedly connected to the inner wall of the pull rod, and a rotating handle is fixedly connected to the inner wall of the pull rod. A fixing plate is slidably connected to the outer wall of the pull rod, and the fixing plate is fixedly connected to the outer wall of the screen box. A limit groove is fixedly connected to the inner wall of the fixing plate, and the outer wall of the limit block is slidably connected to the inner wall of the limit groove. A reset assembly is provided on the outer wall of the pull rod.

[0008] As a further description of the above technical solution:

[0009] The reset assembly includes a spring, which is sleeved on the outer wall of the pull rod. One end of the spring is fixedly connected to the outer wall of the limiting block, and the other end of the spring is fixedly connected to the inner wall of the fixing plate.

[0010] As a further description of the above technical solution:

[0011] The dustproof component includes a protective cover, which is disposed on the top of the screen box. A handle is fixedly connected to the top of the protective cover, and a connecting block is fixedly connected to the outer wall of the protective cover.

[0012] As a further description of the above technical solution:

[0013] A rotating column is fixedly connected to the inner wall of the connecting block, and a fixing plate is rotatably connected to the outer wall of the rotating column. The outer wall of the fixing plate is fixedly connected to the outer wall of the screen box.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the sieve box is fixedly connected to a sliding groove, and the inner wall of the sliding groove is slidably connected to a sliding block.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the sliding block is fixedly connected to the outer wall of the protective cover, and a fixing block is fixedly connected to the bottom of the sliding block.

[0018] As a further description of the above technical solution:

[0019] A bearing seat is fixedly connected to the outer wall of the fixed block, a rotating column two is fixedly connected to the outer wall of the bearing seat, and a locking block is rotatably connected to the outer wall of the rotating column two.

[0020] As a further description of the above technical solution:

[0021] The card block is equipped with a torsion spring inside. One end of the torsion spring is fixedly connected to the inner wall of the card block, and the other end of the torsion spring is fixedly connected to the outer wall of the fixed block.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the limiting block is first rotated by turning the rotating handle, which causes the limiting block to slide out from the inner wall of the limiting groove. Then, the spring returns and the pull rod is reset, allowing the pull rod to slide into the slot, thus achieving the effect of fixing the screen. This solves the problem of cumbersome and time-consuming installation steps when traditional screens rely on bolts for fixing. No tools are needed throughout the process, and there is no need to repeatedly tighten the bolts. This effectively solves the pain point of needing to disassemble and install multiple sets of bolts one by one and the complicated operation steps when fixing traditional screens, making the screen fixing operation simpler and greatly improving the convenience of operation.

[0024] 2. In this utility model, the movement of the fixed block drives the locking block to slide into the sliding groove. When the locking block is squeezed, it twists the torsion spring. Then, it continues to press down. When it is pressed into place, the rebound of the torsion spring drives the locking block to reset, thus locking it at the bottom of the sliding groove. By using a liftable dust cover, the spread of dust during the screening process can be effectively blocked, thereby improving the working environment and reducing dust pollution. This solves the problem of dust flying everywhere and affecting the health of workers and the surrounding environment when there is no dust cover in the traditional way, and improves the environmental protection and ease of operation of the equipment. Attached Figure Description

[0025] Figure 1 This is a perspective view of a sand screening device for building construction proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the limiting groove of a sand screening device for building construction proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the slot of a sand screening device for building construction proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the connecting block of a sand screening device for building construction proposed in this utility model;

[0030] Figure 6 This is a schematic diagram of a torsion spring for a sand screening device used in building construction, as proposed in this utility model.

[0031] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Base; 2. Handle; 3. Screen box; 4. Spring; 5. Screen mesh; 6. Pull rod; 7. Limit block; 8. Fixing plate one; 9. Limit groove; 10. Rotating handle; 11. Slot; 12. Protective cover; 13. Connecting block; 14. Fixing plate two; 15. Rotating column one; 16. Sliding block; 17. Sliding groove; 18. Fixing block; 19. Bearing seat; 20. Locking block; 21. Rotating column two; 22. Torsion spring. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-4 This utility model provides an embodiment of a sand screening device for construction engineering, including a base 1. The base 1 is used to support the screen box 3 and other components, and to evenly transfer the weight of the device to the ground to ensure the overall stability of the equipment. The screen box 3 is fixedly connected to the top of the base 1. The screen box 3 is used to hold the sand to be screened and the screen 5, and to limit the sand screening range to prevent sand from spilling. The outer wall of the screen box 3 is provided with a locking component, which is used to fix the position of the screen 5 to prevent the screen 5 from shifting during the screening process, thereby ensuring screening efficiency. The top of the screen box 3 is provided with a dustproof component, which is used to block the dust generated during screening, thereby improving the construction environment. The screen 5 is provided inside the screen box 3, and the screen 5 is used to separate sand of different particle sizes to screen qualified building materials.

[0036] The locking assembly includes a pull rod 6, which drives the limit block 7 to move, thereby locking and unlocking the screen 5. The outer wall of the pull rod 6 is slidably connected to the inner wall of the screen box 3. The pull rod 6 reciprocates with the screen box 3 to achieve flexible control of the locking state. The screen 5 has a slot 11 inside, which cooperates with the pull rod 6 to provide a fixed point for the screen 5, achieving a precise locking effect. The outer wall of the pull rod 6 is slidably connected to the inner wall of the slot 11. The pull rod 6 engages with the slot 11 to perform insertion and removal movements, achieving the effect of quickly fixing or disassembling the screen 5. The inner wall of the pull rod 6 is fixedly connected to the limit block 7, which locks the pull rod 6 and transmits the elastic force of the spring 4 to ensure the linkage effect of the structure. The inner wall of the pull rod 6 is fixedly connected to a rotating handle 10, which facilitates the operator to pull or rotate the pull rod 6, improving the ease of operation. The outer wall of the pull rod 6 is slidably connected to a fixing plate 8, which is used for... The installation of the limiting groove 9 provides support for the pull rod 6, ensuring the stability of the locking component structure. The fixing plate 8 is fixedly connected to the outer wall of the screen box 3, and the inner wall of the fixing plate 8 is fixedly connected to the limiting groove 9. The limiting groove 9 is used to limit the movement trajectory of the limiting block 7, preventing the pull rod 6 from rotating and deviating, thus ensuring the locking accuracy. The outer wall of the limiting block 7 is slidably connected to the inner wall of the limiting groove 9. The limiting block 7 cooperates with the limiting groove 9 to slide, ensuring the locking and unlocking of the pull rod 6. The outer wall of the pull rod 6 is provided with a reset component, which includes a spring 4. The spring 4 is used to provide a reset force for the pull rod 6, causing the pull rod 6 to automatically engage with the slot 11, achieving the automatic locking effect. The spring 4 is sleeved on the outer wall of the pull rod 6. One end of the spring 4 is fixedly connected to the outer wall of the limiting block 7, and the other end of the spring 4 is fixedly connected to the inner wall of the fixing plate 8. The spring 4 cooperates with the limiting block 7 and the fixing plate 8 to extend and retract, achieving the automatic reset effect of the pull rod 6.

[0037] Reference Figures 5-7The dustproof component includes a protective cover 12, which covers the top opening of the screen box 3 to prevent dust from overflowing and impurities from falling in during the screening process, thus achieving the effect of dust prevention and material protection. The protective cover 12 has an inlet for feeding materials into the screen box 3, preventing dust leakage caused by opening the cover 12 for feeding, achieving both convenient feeding and dust prevention. The protective cover 12 is located on the top of the screen box 3, and a handle 2 is fixedly connected to the top of the cover 12 for the operator to grip, facilitating opening and closing of the cover 12 and improving operational convenience. A connecting block 13 is fixedly connected to the outer wall of the protective cover 12, connecting the cover 12 to the rotating column 15 to transmit rotational force and ensure the flexible operation of the cover 12. To achieve the flipping effect, a rotating column 15 is fixedly connected to the inner wall of the connecting block 13. The rotating column 15 provides a rotation axis for the flipping of the protective cover 12, limiting the rotation center and ensuring the smooth rotation of the protective cover 12. A fixing plate 14 is rotatably connected to the outer wall of the rotating column 15. The fixing plate 14 fixes the rotating column 15 to the screen box 3, providing installation support for the protective cover 12 and ensuring connection stability. The outer wall of the fixing plate 14 is fixedly connected to the outer wall of the screen box 3. A sliding groove 17 is fixedly connected to the outer wall of the screen box 3. The sliding groove 17 provides a sliding track for the sliding block 16, limiting the sliding direction and ensuring smooth translation of the protective cover 12. A sliding block 16 is slidably connected to the inner wall of the sliding groove 17. The sliding block 16 is used to connect the protective cover. 12 and sliding groove 17 drive the protective cover 12 to move along the track, achieving the opening and closing adjustment effect of the protective cover 12. The outer wall of the sliding block 16 is fixedly connected to the outer wall of the protective cover 12. The bottom of the sliding block 16 is fixedly connected to the fixing block 18. The fixing block 18 is used to install the bearing seat 19 and fix the torsion spring 22, providing a support base for the locking block 20, achieving the effect of ensuring the neat installation of the components. The outer wall of the fixing block 18 is fixedly connected to the bearing seat 19. The bearing seat 19 is used to fix the rotating column 21, reducing the frictional resistance during rotation, achieving the effect of ensuring the flexible rotation of the locking block 20. The outer wall of the bearing seat 19 is fixedly connected to the rotating column 21. The rotating column 21 is used to provide a rotation fulcrum for the locking block 20, allowing the locking block 20 to be freely rotated, achieving the effect of locking and engaging. A locking block 20 is rotatably connected to the outer wall of the rotating column 21. The locking block 20 engages with the sliding groove 17 on the outer wall of the screen box 3 to fix the position of the protective cover 12 and prevent the protective cover 12 from accidentally shifting. A torsion spring 22 is installed inside the locking block 20 to provide a restoring force, so that the locking block 20 always remains in the locked state, thus ensuring the reliability of the locking. One end of the torsion spring 22 is fixedly connected to the inner wall of the locking block 20, and the other end is fixedly connected to the outer wall of the fixing block 18. When the locking block 20 is pressed by the sliding groove 17, it fits against the fixing block 18. The torsion spring 22 is torsional and stores elastic force. When it slides to the bottom of the sliding groove 17, the torsion spring 22 drives the locking block 20 to automatically rotate back to the initial locked position through its own deformation recovery.Ensure that the locking block 20 remains tightly fitted to the bottom of the sliding groove 17 to prevent the protective cover 12 from accidentally disengaging due to vibration during the screening process in the screen box 3.

[0038] Working principle: When it is necessary to fix the screen 5, first turn the rotating handle 10. Turning the rotating handle 10 will drive the limiting block 7 to rotate, causing the limiting block 7 to slide out from the inner wall of the limiting groove 9. Then, the spring 4 will return the pull rod 6 to its original position, allowing the pull rod 6 to slide into the slot 11, thus fixing the screen 5. When it is necessary to disassemble the screen 5, pull the pull rod 6. The movement of the pull rod 6 will cause the limiting block 7 to compress the spring 4. When the limiting block 7 slides to the top of the limiting groove 9, turn the rotating handle 10. Turning the rotating handle 10 will drive the limiting block 7 to slide into the inner wall of the limiting groove 9, thus fixing the pull rod 6 and allowing the screen 5 to be disassembled.

[0039] When the protective cover 12 is needed, first pull the handle 2. Pulling the handle 2 will rotate the protective cover 12. The rotation of the protective cover 12 will then rotate the rotating column 15 on the inner wall of the fixed plate 14. Next, the sliding block 16 and the fixed block 18 of the protective cover 12 will move. The movement of the fixed block 18 will then move the locking block 20 into the sliding groove 17. When the locking block 20 is pressed, it will twist the torsion spring 22. Then, continue to press down. When it is pressed into place, the rebound of the torsion spring 22 will reset the locking block 20, thus locking it at the bottom of the sliding groove 17. When the protective cover 12 needs to be unlocked, simply press the locking block 20 again. Pressing the locking block 20 will twist the torsion spring 22. At this time, pulling the handle 2 will move the protective cover 12 upward. The movement of the protective cover 12 will cause the locking block 20 to slide out of the sliding groove 17, thus achieving the effect of disassembling the protective cover 12.

Claims

1. A sand screening device for building construction, comprising a base (1), characterized in that: The base (1) is fixedly connected to the top of the sieve box (3), the outer wall of the sieve box (3) is provided with a locking component, the top of the sieve box (3) is provided with a dustproof component, and the inside of the sieve box (3) is provided with a sieve mesh (5). The locking assembly includes a pull rod (6), the outer wall of which is slidably connected to the inner wall of the screen box (3). A slot (11) is provided inside the screen (5). The outer wall of the pull rod (6) is slidably connected to the inner wall of the slot (11). A limit block (7) is fixedly connected to the inner wall of the pull rod (6). A rotating handle (10) is fixedly connected to the inner wall of the pull rod (6). A fixing plate (8) is slidably connected to the outer wall of the pull rod (6). The fixing plate (8) is fixedly connected to the outer wall of the screen box (3). A limit groove (9) is fixedly connected to the inner wall of the fixing plate (8). The outer wall of the limit block (7) is slidably connected to the inner wall of the limit groove (9). A reset assembly is provided on the outer wall of the pull rod (6).

2. The sand screening device for building construction engineering according to claim 1, characterized in that: The reset assembly includes a spring (4), which is sleeved on the outer wall of the pull rod (6). One end of the spring (4) is fixedly connected to the outer wall of the limiting block (7), and the other end of the spring (4) is fixedly connected to the inner wall of the fixing plate (8).

3. The sand screening device for building construction engineering according to claim 1, characterized in that: The dustproof component includes a protective cover (12), which is located on the top of the screen box (3). A handle (2) is fixedly connected to the top of the protective cover (12), and a connecting block (13) is fixedly connected to the outer wall of the protective cover (12).

4. A sand screening device for building construction engineering according to claim 3, characterized in that: The inner wall of the connecting block (13) is fixedly connected to a rotating column (15), and the outer wall of the rotating column (15) is rotatably connected to a fixing plate (14). The outer wall of the fixing plate (14) is fixedly connected to the outer wall of the sieve box (3).

5. A sand screening device for building construction engineering according to claim 4, characterized in that: The outer wall of the sieve box (3) is fixedly connected to a sliding groove (17), and the inner wall of the sliding groove (17) is slidably connected to a sliding block (16).

6. A sand screening device for building construction engineering according to claim 5, characterized in that: The outer wall of the sliding block (16) is fixedly connected to the outer wall of the protective cover (12), and a fixing block (18) is fixedly connected to the bottom of the sliding block (16).

7. A sand screening device for building construction engineering according to claim 6, characterized in that: The outer wall of the fixed block (18) is fixedly connected to a bearing seat (19), the outer wall of the bearing seat (19) is fixedly connected to a rotating column (21), and the outer wall of the rotating column (21) is rotatably connected to a locking block (20).

8. A sand screening device for building construction engineering according to claim 7, characterized in that: The card block (20) is provided with a torsion spring (22) inside. One end of the torsion spring (22) is fixedly connected to the inner wall of the card block (20), and the other end of the torsion spring (22) is fixedly connected to the outer wall of the fixing block (18).

Images