Concrete sand-gravel discharging device with filtering function

Abstract

The utility model relates to the field of conveyors, in particular to a concrete gravel blanking device with a filtering function, which comprises a first rack, the upper end of the first rack is fixedly connected with a U-shaped frame, the left side and the right side of the upper end of the first rack are each fixedly connected with two first supporting blocks, the upper ends of the four first supporting blocks are fixedly connected with a bearing plate, the upper end of the bearing plate is fixedly connected with two lug plates and a third motor, rotating columns are rotationally installed on the inner walls of the lug plates, and the ends, close to each other, of the two rotating columns are fixedly connected with a rotating frame. The feeding bin inclines rightwards, then a third motor is started to enable a rotating column to rotate, the rotating column drives a rotating frame to rotate leftwards, large impurities located on the two filtering plates can be rapidly poured out, and the problems that in the gravel discharging process, large-particle impurities in gravel are difficult to effectively intercept and filter, and the discharging efficiency is high are solved. And the impurities are difficult to quickly pour and emptied from the filtering mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of conveyors, and specifically relates to a concrete aggregate feeding device with a filtering function. Background Technology

[0002] In the concrete production process, sand and gravel are the basic raw materials, and their quality has a crucial impact on the performance of concrete. In traditional concrete production lines, large particles of impurities are often introduced into the sand and gravel during transportation and feeding. This not only affects the quality of concrete but may also cause wear and tear on production equipment and reduce its service life.

[0003] Currently, concrete aggregate conveyors typically only have basic conveying functions and lack an effective filtration system. During the aggregate feeding process, large particles of impurities in the aggregate are difficult to intercept and filter effectively, and the impurities are difficult to pour out from the filtration mechanism, making it inconvenient to classify and convey aggregates of different particle sizes.

[0004] Therefore, a concrete aggregate feeding device with a filtration function is proposed to effectively intercept and filter large particles of impurities in the aggregate, and the impurities can be poured out from the filtration mechanism, and it is convenient to classify and transport aggregates of different particle sizes. Utility Model Content

[0005] To overcome the problem that concrete aggregate conveyors typically only have basic conveying functions and lack an effective filtration process, large particles of impurities in the aggregate are difficult to intercept and filter during the aggregate feeding process, and impurities are difficult to pour out from the filtration mechanism, making it inconvenient to classify and convey aggregates of different particle sizes.

[0006] The technical solution of this utility model is as follows: a concrete aggregate feeding device with a filtering function, comprising a first frame; a second frame is fixedly connected to the upper end of the first frame; two first support blocks are fixedly connected to the left and right sides of the upper end of the second frame; a bearing plate is fixedly connected to the upper end of the four first support blocks; two ear plates and a third motor are fixedly connected to the upper end of the bearing plate; rotating columns are rotatably installed on the inner wall of the ear plates; a rotating frame is fixedly connected to one end of the two rotating columns that are close to each other; the output shaft of the third motor is fixedly connected to one of the rotating columns; a filter frame is fixedly connected to the upper end of the rotating frame; a feeding bin is movably arranged at the upper end of the filter frame; a first hinge is fixedly connected to the right side of the feeding bin; a first fixing column is fixedly connected to the inner wall of the first hinge; and two second supports are fixedly connected to the upper end of the bearing plate. The first frame has two second support blocks on which rotating rods are rotatably mounted. A fixed cylinder is fixed to the outer wall of the rotating rod. The left side of the fixed cylinder is fixed to the lower right side of the feed hopper. A second hinge is fixed to the right side of the second frame. A take-up reel is rotatably mounted on the inner wall of the second hinge. A second motor is fixed to the front end of the second hinge. The output shaft of the second motor passes through the second hinge and is fixed to the front end of the take-up reel. A rope is fixed to the outer wall of the second hinge. A U-shaped block is fixed to the right side of the bearing plate. A second fixed column is fixed to the front end of the U-shaped block. The rope is attached to the outer wall of the second fixed column and fixed to the first fixed column. A first conveyor is set on the first frame. A second conveyor is set on the second frame. A feeding chute is opened through the upper end of the bearing plate. A filter assembly is set on the filter frame.

[0007] The filter assembly includes a first groove, a bearing housing, a fixed base, a first motor, a double-threaded screw, a threaded sleeve, a limiting groove, a slider, a triangular body, a filter plate, a second through hole, and a sliding groove. The first groove is opened through the front end of the filter frame. The bearing housing and the fixed base are fixedly connected to the right side of the filter frame. The first motor is fixedly connected to the rear end of the fixed base. The front end of the output shaft of the first motor passes through the fixed base and is fixedly connected to a double-threaded screw. The front end of the double-threaded screw extends to the inner wall of the bearing housing. The threads on both sides of the center of the outer wall of the double-threaded screw are opposite to each other. Two threaded sleeves adapted to the two different threaded threads are movably installed on the outer wall of the double-threaded screw. A limiting groove is opened through the right side of the filter frame. A slider is fixedly connected to the left end of the threaded sleeve. A triangular body is fixedly connected to the upper end of the slider. A filter plate is fixedly connected to the ends of the two sliders that are far apart from each other. The upper end of the filter plate has a uniformly distributed second through hole. The outer wall of the filter plate fits against the inner wall of the first groove. The upper end of the filter plate has a uniformly distributed second through hole.

[0008] Preferably, when large impurities need to be cleaned from the filter frame, first turn on the second motor to rotate the take-up reel. The rope will be wound onto the take-up reel, causing the first hinge to tilt to the right, which in turn tilts the feed hopper to the right. Then, turn on the third motor to rotate the rotating column, which in turn rotates the rotating frame to the left. This allows the large impurities located on the two filter plates to be quickly dumped, making it convenient to use. When filtering sand and gravel, first turn on the first motor to rotate the double-threaded screw. The two threaded sleeves will move closer together along the outer wall of the double-threaded screw, eventually causing the two sliders to come into contact with each other at their closest points. At this time, the two triangular parts will come into contact with each other, allowing the sand and gravel to be poured into the filter frame through the feed hopper. Large particles of impurities will be blocked on the filter plates, while small particles of sand will be filtered out. The stone material will fall downwards through the second through hole. After the feeding stops, the first motor is turned on to make the double-threaded screw rotate in the opposite direction, causing the two threaded sleeves to move away from each other. The filter plate will move along the inner wall of the first trough towards the outside of the filter frame. Small particles of sand and gravel located at the upper part of the filter plate will fall through the second through hole, while larger particles of sand and gravel will be located between the slider and the inner wall of the filter frame. When the third motor drives the rotating column to rotate, the sand and gravel in the filter frame can be tilted to the left. This solves the problem that concrete sand and gravel feeding conveyors usually only have basic conveying functions and lack an effective filtration link. During the sand and gravel feeding process, large particles of impurities in the sand and gravel are difficult to be effectively intercepted and filtered, and impurities are difficult to quickly pour out and empty from the filter mechanism, making it inconvenient to quickly maintain the internal parts of the filter mechanism.

[0009] Preferably, the inner wall of the rotating frame is flush with the inner wall of the feeding trough. Two second fixing blocks are fixed to the left side of the two first support blocks on the left side. The ends of the two second fixing blocks that are close to each other are fixed with evenly distributed elastic ropes. When the rotating frame rotates, the left side of the filter frame will hit the elastic ropes. The elastic ropes are made of elastic material, which can effectively buffer the filter frame and facilitate the discharge of large particles of impurities in the filter frame.

[0010] Preferably, the upper and lower ends of the slider are respectively attached to the upper and lower end faces of the inner wall of the limiting groove, and the two triangular bodies are attached to each other at one end to form an equilateral triangle structure. The left and right sides of the triangle are respectively attached to the left and right sides of the inner wall of the filter frame. When the two triangular bodies are attached to each other at one end, a triangular structure can be formed. When the material falls into the filter frame from above, it will impact the tip of the upper end of the triangle, and then the material will fall down along the slope of the triangle.

[0011] Preferably, a groove is provided on the left side of the inner wall of the filter frame, and the slider is slidably disposed on the inner wall of the groove. The slider can slide along the inner wall of the groove, which improves the stability of the slider when it moves.

[0012] Preferably, a U-shaped frame is fixed to the right end of the two second support blocks, and two rubber blocks are fixed to the upper end of the U-shaped frame. A groove is opened on the inner wall of the U-shaped frame, and the groove is set through the upper end of the U-shaped frame. The rope is located in the inner space of the groove. When the rope is wound up, the rope will be located on the inner wall of the groove. Finally, the feeding hopper tilts to the right and the right side of the feeding hopper will fall on the upper end of the two rubber blocks, so as to achieve stable placement of the feeding hopper.

[0013] Preferably, a screening assembly is provided between the two first support blocks on the left and the two first support blocks on the right. The screening assembly includes a U-shaped plate, a first fixed block, a spring, a vibrating plate, a first through hole, a vibrator, and a discharge chute. A U-shaped plate is fixed between the two first support blocks on the left and the two first support blocks on the right. Two first fixed blocks are fixed to the left and right sides of the inner wall of the U-shaped plate. Two springs are fixed to the ends of the two first fixed blocks on the same side that are close to each other. A vibrating plate is fixed between two springs on the same side that are corresponding in the vertical direction. The upper end of the vibrating plate has a uniformly distributed first through hole. The lower end of the vibrating plate is fixed to a vibrator. The lower end of the U-shaped plate has a discharge chute. When sand and gravel fall onto the vibrating plate, sand and gravel that meet the diameter of the first through hole will fall onto the second conveyor through the discharge chute. Sand and gravel that do not meet the diameter will fall onto the first conveyor as the vibrating plate vibrates. This can realize the transportation of sand and gravel of different particle sizes to different positions, solving the problem of classifying and transporting sand and gravel of different particle sizes.

[0014] Preferably, both the first and second frames are U-shaped. The upper left and right sides of the first frame are fixed with baffles. The two baffles can limit the sand and gravel, thus facilitating the stable discharge of the sand and gravel.

[0015] The beneficial effects of this utility model are:

[0016] 1. By setting a rotatable filter frame, when it is necessary to clean large impurities in the filter frame, first turn on the second motor to make the take-up reel rotate. The rope will be wound on the take-up reel, and the rope will drive the first hinge to tilt to the right, which in turn will make the feed hopper tilt to the right. Then turn on the third motor to make the rotating column rotate. The rotating column drives the rotating frame to rotate to the left, which can quickly dump the large impurities located on the two filter plates. This solves the problem that large particles of impurities in sand and gravel are difficult to be effectively intercepted and filtered during the sand and gravel feeding process, and that impurities are difficult to quickly dump and empty from the filter mechanism, making it inconvenient to quickly maintain the internal parts of the filter mechanism.

[0017] 2. When filtering sand and gravel, first turn on the first motor to rotate the double-threaded screw. The two threaded sleeves will move closer to each other along the outer wall of the double-threaded screw, eventually causing the two sliders to come into contact with each other at one end. At this time, the two triangular parts will come into contact with each other, and the sand and gravel will be poured into the filter frame through the feed hopper. Large particles of impurities will be blocked on the filter plate, and small particles of sand and gravel will fall out through the second through hole. After stopping the feeding, turn on the first motor to rotate the double-threaded screw in the opposite direction, causing the two threaded sleeves to move away from each other. The filter plate will move towards the outside of the filter frame along the inner wall of the first trough. Small particles of sand and gravel located at the top of the filter plate will fall out through the second through hole, while larger particles of sand and gravel will be located between the slider and the inner wall of the filter frame. When the third motor drives the rotating column to rotate, the sand and gravel in the filter frame can be tilted to the left. This solves the problem that concrete sand and gravel feeding conveyors usually only have basic conveying functions and lack an effective filtration link. During the sand and gravel feeding process, large particles of impurities in the sand and gravel are difficult to be effectively intercepted and filtered.

[0018] 3. When the rotating frame rotates, the left side of the filter frame will hit the elastic rope. The elastic rope is made of elastic material, which can effectively buffer the filter frame and facilitate the discharge of large particles of impurities inside the filter frame. When the two triangular bodies are close to each other at one end, they can form a triangular structure. When the material falls into the filter frame from above, it will impact the tip of the upper end of the triangular body, and then the material will fall down along the slope of the triangular body.

[0019] 4. When sand and gravel fall onto the vibrating plate, sand and gravel that meet the diameter of the first through hole will fall onto the second conveyor through the discharge chute, while those that do not meet the diameter will fall onto the first conveyor as the vibrating plate vibrates. This can realize the transportation of sand and gravel of different particle sizes to different positions, thus solving the problem of classifying and transporting sand and gravel of different particle sizes. Attached Figure Description

[0020] Figure 1 The diagram shown is a three-dimensional structural schematic of a concrete aggregate feeding device with a filtering function according to this utility model.

[0021] Figure 2 The diagram shows a three-dimensional structural schematic of a U-shaped frame for a concrete aggregate feeding device with a filtering function according to this utility model.

[0022] Figure 3 The diagram shows a three-dimensional structural schematic of the bearing plate of a concrete aggregate feeding device with filtering function according to this utility model.

[0023] Figure 4 The diagram shown is a bottom perspective three-dimensional structural schematic of the rotating frame of a concrete aggregate feeding device with filtering function according to this utility model.

[0024] Figure 5 The diagram shows a three-dimensional structural schematic of the second fixing block of a concrete aggregate feeding device with a filtering function according to this utility model.

[0025] Figure 6 The diagram shows a three-dimensional structural schematic of the filter component of a concrete aggregate feeding device with a filtration function according to this utility model.

[0026] Figure 7 The diagram shows a three-dimensional structural schematic of the screening component of a concrete aggregate feeding device with a filtration function according to this utility model.

[0027] The labels in the attached diagram are as follows: 1. First frame; 2. Second frame; 3. First support block; 301. U-shaped plate; 302. First fixing block; 303. Spring; 304. Vibrating plate; 305. First through hole; 306. Vibrator; 307. Discharge chute; 4. Bearing plate; 5. Rotating frame; 6. Filter frame; 601. First trough; 602. Bearing seat; 603. Fixing seat; 604. First motor; 605. Double-threaded screw; 606. Threaded sleeve; 607. Limiting groove; 608. Slider; 609. Triangular body; 610. Filter plate; 61 1. Second through hole; 6.12. Slide groove; 7. Feed hopper; 8. First hinge seat; 9. First fixed column; 10. Second hinge seat; 11. Take-up reel; 12. Second motor; 13. U-shaped block; 14. Second fixed column; 15. Rope; 16. Fixed cylinder; 17. Second support block; 18. Rotating rod; 19. First conveyor; 20. Second conveyor; 21. Baffle; 22. U-shaped frame; 23. Rubber block; 24. Groove; 25. Third motor; 26. Ear plate; 27. Discharge chute; 28. Rotating column; 29. ​​Second fixed block; 30. Elastic rope. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] Please see Figure 1-4A concrete aggregate feeding device with filtering function includes a first frame 1; a second frame 2 is fixedly connected to the upper end of the first frame 1; two first support blocks 3 are fixedly connected to the left and right sides of the upper end of the second frame 2; a bearing plate 4 is fixedly connected to the upper end of the four first support blocks 3; two ear plates 26 and a third motor 25 are fixedly connected to the upper end of the bearing plate 4; rotating columns 28 are rotatably installed on the inner wall of the ear plates 26; a rotating frame 5 is fixedly connected to the end of the two rotating columns 28 that are close to each other; the output shaft of the third motor 25 is fixedly connected to one of the rotating columns 28; a filter frame 6 is fixedly connected to the upper end of the rotating frame 5; a feeding bin 7 is movably arranged on the upper end of the filter frame 6; a first hinge seat 8 is fixedly connected to the right side of the feeding bin 7; a first fixing column 9 is fixedly connected to the inner wall of the first hinge seat 8; two second support blocks 17 are fixedly connected to the upper end of the bearing plate 4; and rotating columns 28 are rotatably installed on the two second support blocks 17. There is a rotating rod 18, and a fixed cylinder 16 is fixed to the outer wall of the rotating rod 18. The left side of the fixed cylinder 16 is fixed to the lower right side of the feed hopper 7. A second hinge seat 10 is fixed to the right side of the second frame 2. A take-up reel 11 is rotatably installed on the inner wall of the second hinge seat 10. A second motor 12 is fixed to the front end of the second hinge seat 10. The output shaft of the second motor 12 passes through the second hinge seat 10 and is fixed to the front end of the take-up reel 11. A rope 15 is fixed to the outer wall of the second hinge seat 10. A U-shaped block 13 is fixed to the right side of the bearing plate 4. A second fixed column 14 is fixed to the front end of the U-shaped block 13. The rope 15 is attached to the outer wall of the second fixed column 14 and fixed to the first fixed column 9. A first conveyor 19 is provided on the first frame 1. A second conveyor 20 is provided on the second frame 2. A feed chute 27 is opened through the upper end of the bearing plate 4. A filter assembly is provided on the filter frame 6.

[0031] The filter assembly includes a first groove 601, a bearing seat 602, a fixed seat 603, a first motor 604, a double-threaded screw 605, a threaded sleeve 606, a limiting groove 607, a slider 608, a triangular body 609, a filter plate 610, a second through hole 611, and a sliding groove 612. The first groove 601 is opened through the front end of the filter frame 6. The bearing seat 602 and the fixed seat 603 are fixedly connected to the right side of the filter frame 6. The first motor 604 is fixedly connected to the rear end of the fixed seat 603. The front end of the output shaft of the first motor 604 passes through the fixed seat 603 and is fixedly connected to a double-threaded screw 605. The front end of the double-threaded screw 605 extends to the inner wall of the bearing seat 602. The threads on the outer wall of the screw 605 on both sides of the center are opposite to each other. Two threaded sleeves 606, each adapted to one of the two types of threads, are movably installed on the outer wall of the double-threaded screw 605. A limiting groove 607 is opened through the right side of the filter frame 6. A slider 608 is fixed to the left end of the threaded sleeve 606. A triangular body 609 is fixed to the upper end of the slider 608. A filter plate 610 is fixed to the ends of the two sliders 608 that are far apart from each other. The upper end of the filter plate 610 is opened through evenly distributed second through holes 611. The outer wall of the filter plate 610 is in contact with the inner wall of the first groove 601. The upper end of the filter plate 610 is opened through evenly distributed second through holes 611.

[0032] Please see Figure 1 , 3 In this embodiment, the inner wall of the rotating frame 5 is flush with the inner wall of the feeding trough 27. Two second fixing blocks 29 are fixedly connected to the left side of the two first support blocks 3 located on the left side. The two second fixing blocks 29 are fixedly connected to the ends of the two second fixing blocks 29 that are close to each other, and evenly distributed elastic ropes 30 are fixedly connected to them.

[0033] Please see Figure 6 In this embodiment, the upper and lower ends of the slider 608 are respectively attached to the upper and lower end faces of the inner wall of the limiting groove 607, and the two triangular bodies 609 are attached to each other at one end to form an equilateral triangle structure. The left and right sides of the triangular bodies 609 are respectively attached to the left and right sides of the inner wall of the filter frame 6. A sliding groove 612 is provided on the left side of the inner wall of the filter frame 6, and the slider 608 is slidably disposed on the inner wall of the sliding groove 612.

[0034] Please see Figure 1 and 2 In this embodiment, a U-shaped frame 22 is fixedly connected to the right end of the two second support blocks 17, and two rubber blocks 23 are fixedly connected to the upper end of the U-shaped frame 22. A groove 24 is provided on the inner wall of the U-shaped frame 22. The groove 24 is provided through the upper end of the U-shaped frame 22, and the rope 15 is located in the internal space of the groove 24.

[0035] Please see Figure 1 In this embodiment, both the first frame 1 and the second frame 2 are U-shaped, and baffles 21 are fixed to the upper left and right sides of the first frame 1.

[0036] In this embodiment: when large impurities need to be cleaned from the filter frame 6, the second motor 12 is first turned on to rotate the take-up reel 11. The rope 15 will be wound onto the take-up reel 11, and the rope 15 will drive the first hinge seat 8 to tilt to the right, thereby causing the feed bin 7 to tilt to the right. Then, the third motor 25 is turned on to rotate the rotating column 28, which drives the rotating frame 5 to rotate to the left. This allows the large impurities located on the two filter plates 610 to be quickly dumped, which is convenient to use. When sand and gravel need to be filtered, the first motor 604 is first turned on to rotate the double-threaded screw 605. The two threaded sleeves 606 will move closer to each other along the outer wall of the double-threaded screw 605, ultimately causing the two sliders 6 to move closer together. When the two ends of the 08 are close to each other and stick together, the two triangular bodies 609 will stick together and pour the sand and gravel into the interior of the filter frame 6 through the feed bin 7. Large particles of impurities will be blocked on the filter plate 610, and small particles of sand and gravel will fall out through the second through hole 611. After the feeding stops, the first motor 604 is turned on to make the double threaded screw 605 rotate in the opposite direction, so that the two threaded sleeves 606 move away from each other. The filter plate 610 will move along the inner wall of the first groove 601 to the outside of the filter frame 6. The small particles of sand and gravel located at the upper end of the filter plate 610 will fall through the second through hole 611, while the larger particles of sand and gravel will be located between the slider 608 and the inner wall of the filter frame 6.

[0037] Example 2

[0038] Please see Figure 5 Based on Embodiment 1, this application provides a technical solution: a screening assembly is provided between the two first support blocks 3 on the left and the two first support blocks 3 on the right. The screening assembly includes a U-shaped plate 301, a first fixing block 302, a spring 303, a vibrating plate 304, a first through hole 305, a vibrator 306, and a discharge trough 307. A U-shaped plate 301 is fixed between the two first support blocks 3 on the left and the two first support blocks 3 on the right. Two first fixing blocks 302 are fixed on both sides of the inner wall of the U-shaped plate 301. Two springs 303 are evenly distributed and fixed at the ends of the two first fixing blocks 302 on the same side that are close to each other. A vibrating plate 304 is fixed between two springs 303 on the same side and corresponding in the vertical direction. The upper end of the vibrating plate 304 is provided with an evenly distributed first through hole 305. The lower end of the vibrating plate 304 is fixed with a vibrator 306. The lower end of the U-shaped plate 301 is provided with a discharge trough 307.

[0039] In this embodiment: when sand and gravel fall onto the vibrating plate 304, sand and gravel that meet the diameter of the first through hole 305 will fall onto the second conveyor 20 through the discharge chute 307, while sand and gravel that do not meet the diameter will fall onto the first conveyor 19 as the vibrating plate 304 vibrates.

[0040] Working principle: First, the first motor 604 is turned on, causing the double-threaded screw 605 to rotate. The two threaded sleeves 606 will move closer to each other along the outer wall of the double-threaded screw 605, eventually causing the two sliders 608 to come into contact with each other at one end. At this time, the two triangular bodies 609 will come into contact with each other, and the sand and gravel will be poured into the interior of the filter frame 6 through the feed bin 7. Large particles of impurities will be blocked on the filter plate 610, and small particles of sand and gravel will fall out through the second through hole 611.

[0041] After feeding is stopped, the first motor 604 is turned on to make the double-threaded screw 605 rotate in the opposite direction, so that the two threaded sleeves 606 move away from each other. The filter plate 610 will move along the inner wall of the first groove 601 to the outside of the filter frame 6. The small particles of sand and gravel located at the upper end of the filter plate 610 will fall through the second through hole 611, while the larger particles of sand and gravel will be located between the slider 608 and the inner wall of the filter frame 6.

[0042] When it is necessary to clean large impurities in the filter frame 6, first turn on the second motor 12 to make the take-up reel 11 rotate. The rope 15 will be wound on the take-up reel 11, and the rope 15 will drive the first hinge seat 8 to tilt to the right, which in turn causes the feed bin 7 to tilt to the right. Finally, the feed bin 7 tilts to the right and the right side of the feed bin 7 will fall on the top of the two rubber blocks 23, thus achieving stable placement of the feed bin 7.

[0043] Then the third motor 25 is turned on to make the rotating column 28 rotate. The rotating column 28 drives the rotating frame 5 to rotate to the left, quickly dumping the large pieces of impurities located on the two filter plates 610.

[0044] When sand and gravel fall onto the vibrating plate 304, sand and gravel that meet the diameter of the first through hole 305 will fall onto the second conveyor 20 through the discharge chute 307, while those that do not meet the diameter will fall onto the first conveyor 19 as the vibrating plate 304 vibrates. The first conveyor 19 feeds forward and the second conveyor 20 feeds backward, thus achieving the classified output of materials of different particle sizes.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A concrete aggregate feeding device with filtering function, comprising a first frame (1); characterized in that: The upper end of the first frame (1) is fixedly connected to the second frame (2). Two first support blocks (3) are fixedly connected to the upper left and right sides of the second frame (2). The upper ends of the four first support blocks (3) are fixedly connected to the bearing plates (4). The upper ends of the bearing plates (4) are fixedly connected to the two ear plates (26) and the third motor (25). The inner wall of the ear plates (26) is rotatably mounted with rotating columns (28). The ends of the two rotating columns (28) that are close to each other are fixedly connected to rotating frames (5). The third motor (25) The output shaft is fixed to one of the rotating columns (28). A filter frame (6) is fixed to the upper end of the rotating frame (5). A feed bin (7) is movably installed at the upper end of the filter frame (6). A first hinge seat (8) is fixed to the right side of the feed bin (7). A first fixed column (9) is fixed to the inner wall of the first hinge seat (8). Two second support blocks (17) are fixed to the upper end of the bearing plate (4). A rotating rod (18) is rotatably installed on the two second support blocks (17). The outer wall of the rotating rod (18) A fixed cylinder (16) is fixedly connected to the second frame (2). The left side of the fixed cylinder (16) is fixedly connected to the lower right side of the feed hopper (7). A second hinge seat (10) is fixedly connected to the right side of the second frame (2). A take-up reel (11) is rotatably mounted on the inner wall of the second hinge seat (10). A second motor (12) is fixedly connected to the front end of the second hinge seat (10). The output shaft of the second motor (12) passes through the second hinge seat (10) and is fixedly connected to the front end of the take-up reel (11). A rope (15) is fixedly connected to the outer wall of the second hinge seat (10). A U-shaped block (13) is fixed to the right side of the bearing plate (4), and a second fixed column (14) is fixed to the front end of the U-shaped block (13). A rope (15) is attached to the outer wall of the second fixed column (14) and fixed to the first fixed column (9). A first conveyor (19) is provided on the first frame (1), and a second conveyor (20) is provided on the second frame (2). A feeding trough (27) is opened through the upper end of the bearing plate (4), and a filter assembly is provided on the filter frame (6). The filter assembly includes a first groove (601), a bearing seat (602), a fixed seat (603), a first motor (604), a double-threaded screw (605), a threaded sleeve (606), a limiting groove (607), a slider (608), a triangular body (609), a filter plate (610), a second through hole (611), and a sliding groove (612). The first groove (601) is opened through the front end of the filter frame (6). The bearing seat (602) and the fixed seat (603) are fixedly connected to the right side of the filter frame (6). The first motor (604) is fixedly connected to the rear end of the fixed seat (603). The front end of the output shaft of the first motor (604) passes through the fixed seat (603) and is fixedly connected to the double-threaded screw (605). The front end of the double-threaded screw (605) extends to the bearing seat (602). The inner wall of the double-threaded screw (605) has two threaded sleeves (606) that are adapted to the two different threaded teeth on the outer wall of the double-threaded screw (605). A limiting groove (607) is opened through the right side of the filter frame (6). A slider (608) is fixed to the left end of the threaded sleeve (606). A triangular body (609) is fixed to the upper end of the slider (608). A filter plate (610) is fixed to the end of the two sliders (608) that are far apart from each other. A second through hole (611) is evenly distributed through the upper end of the filter plate (610). The outer wall of the filter plate (610) is in contact with the inner wall of the first groove (601). A second through hole (611) is evenly distributed through the upper end of the filter plate (610). The outer wall of the filter plate (610) is in contact with the inner wall of the first groove (601).

2. The concrete aggregate feeding device with filtering function according to claim 1, characterized in that: The inner wall of the rotating frame (5) is flush with the inner wall of the feeding trough (27). Two second fixing blocks (29) are fixed on the left side of the two first support blocks (3) located on the left side. The two second fixing blocks (29) are fixed with evenly distributed elastic ropes (30) at their close ends.

3. A concrete aggregate feeding device with filtering function according to claim 1, characterized in that: The upper and lower ends of the slider (608) are respectively attached to the upper and lower end faces of the inner wall of the limiting groove (607). The two triangular bodies (609) are attached to each other at one end to form an equilateral triangle structure. The left and right sides of the triangular bodies (609) are respectively attached to the left and right sides of the inner wall of the filter frame (6).

4. A concrete aggregate feeding device with filtering function according to claim 1, characterized in that: A groove (612) is provided on the left side of the inner wall of the filter frame (6), and a slider (608) is slidably disposed on the inner wall of the groove (612).

5. A concrete aggregate feeding device with filtering function according to claim 1, characterized in that: Two second support blocks (17) are fixed to the right end of a U-shaped frame (22). Two rubber blocks (23) are fixed to the upper end of the U-shaped frame (22). A groove (24) is provided on the inner wall of the U-shaped frame (22). The groove (24) is provided through the upper end of the U-shaped frame (22). The rope (15) is located in the internal space of the groove (24).

6. A concrete aggregate feeding device with filtering function according to claim 1, characterized in that: A screening assembly is provided between the two first support blocks (3) on the left and the two first support blocks (3) on the right. The screening assembly includes a U-shaped plate (301), a first fixing block (302), a spring (303), a vibrating plate (304), a first through hole (305), a vibrator (306), and a discharge chute (307). A U-shaped plate (301) is fixedly connected between the two first support blocks (3) on the left and the two first support blocks (3) on the right. The inner walls of the U-shaped plate (301) are fixedly connected to both sides. Two first fixing blocks (302) are located on the same side and are close to each other. A uniformly distributed spring (303) is fixed to one end of the two first fixing blocks (302). A vibrating plate (304) is fixed between the two springs (303) located on the same side and corresponding in the vertical direction. A uniformly distributed first through hole (305) is opened through the upper end of the vibrating plate (304). A vibrating machine (306) is fixed to the lower end of the vibrating plate (304). A discharge chute (307) is opened through the lower end of the U-shaped plate (301).

7. A concrete aggregate feeding device with filtering function according to claim 1, characterized in that: Both the first frame (1) and the second frame (2) are U-shaped, and baffles (21) are fixed to the upper left and right sides of the first frame (1).

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