Machine-made sand grinding and screening device

Abstract

The utility model discloses a machine-made sand grinding and screening device and belongs to the field of grinding equipment, the machine-made sand grinding and screening device comprises a grinding box body and a grinding gear, the grinding gear rotates in the grinding box body, and the machine-made sand grinding and screening device is characterized in that a storage box used for storing qualified materials is arranged in the grinding box body, a feeding port is formed in the grinding box body, and a first transmission belt is arranged at the feeding port; one end of the first transmission belt penetrates through the feeding hole and extends into the grinding box body; a discharging opening is formed in the grinding box body, a material receiving table is arranged on the outer side of the discharging opening of the grinding box body, and the material receiving table is provided with a conveying assembly used for conveying materials to the first conveying belt; a sieve plate is arranged in the grinding box body close to the discharge hole, and a plurality of sieve holes are formed in the sieve plate; a cleaning assembly used for cleaning materials on the sieve plate is arranged in the grinding box body, and a dredging mechanism used for dredging sieve holes in the sieve plate is arranged in the grinding box body. The device has the effects of saving manpower and improving the working efficiency of the machine-made sand production line.

Description

Technical Field

[0001] The present application relates to the technical field of grinding equipment, and in particular to a machine-made sand grinding and screening device. Background Art

[0002] Artificial sand refers to sand processed by sand making machines and other auxiliary equipment. The finished product is more regular and can be processed into sand of different rules and sizes according to different process requirements, which can better meet daily needs. With the shortage of natural sand resources, replacing natural sand with artificial sand has become an inevitable choice for the sustainable development of the concrete industry. Artificial sand is generally made of stone through grinding and other processes. The grinding devices generally include ball mills and rod mills, and the corresponding grinding methods are adopted according to specific needs.

[0003] The existing sand making method of grinding equipment requires repeated removal, screening and re-melting of stones, which is relatively cumbersome. During the screening process, the sieve holes on the sieve plate will be clogged and need to be manually removed for cleaning, which also increases the workload and reduces the efficiency of the machine-made sand production line. Utility Model Content

[0004] In order to improve the working efficiency of the machine-made sand production line, the present application provides a machine-made sand grinding and screening device.

[0005] The invention provides a machine-made sand grinding and screening device adopting the following technical solution:

[0006] A machine-made sand grinding and screening device comprises a grinding box and a grinding gear, the grinding gear rotates in the grinding box, a storage box for storing machine-made sand that meets the requirements is arranged in the grinding box, a feed port is arranged on the grinding box, a first transmission belt is arranged at the feed port, one end of the first transmission belt passes through the feed port and penetrates into the grinding box; a discharge port is arranged on the grinding box, a material receiving platform is arranged at the outer side of the discharge port, and a conveying component for conveying materials to the first transmission belt is arranged on the material receiving platform; a sieve plate is arranged near the discharge port in the grinding box, a plurality of sieve holes are arranged on the sieve plate, and the sieve plate is located above the storage box; a cleaning component for cleaning the material on the sieve plate is arranged in the grinding box, and a dredging mechanism for dredging the sieve holes on the sieve plate is arranged in the grinding box.

[0007] By adopting the above technical scheme, the original material is transported into the grinding box through the first transmission belt into the feed port, and the original material falls onto the screen plate after being ground by the grinding gear, and is screened by size through the screen holes on the screen plate. The machine-made sand that meets the requirements falls into the storage box through the screen holes, and the machine-made sand of unqualified size is retained on the screen plate. The machine-made sand of unqualified size on the screen plate falls onto the receiving table through the discharge port under the action of the cleaning component, and then the machine-made sand of unqualified size is sent to the first transmission belt and enters the grinding box for grinding again until it meets the size under the action of the conveying component; thereby reducing the manpower waste in the sand making process; in addition, in the process of making machine-made sand, the dredging mechanism dredges the screen holes to reduce the possibility of blockage of the screen holes, thereby reducing the work intensity of the staff and improving the work efficiency of the machine-made sand production line.

[0008] Preferably, the cleaning assembly includes a cleaning block, a screw rod, a guide rod and a first motor, the two ends of the screw rod are respectively rotatably connected to the relative inner walls of the grinding box, the first motor is fixedly installed on the outer side wall of the grinding box, one end of the screw rod is fixedly connected to the rotating shaft of the first motor, and the cleaning block is threadedly connected to the screw rod; the two ends of the guide rod are respectively rotatably connected to the relative inner walls of the grinding box, the cleaning block slides on the guide rod, and the cleaning block slides on the screen plate.

[0009] By adopting the above technical solution, the first motor starts to drive the screw to rotate, and the rotation of the screw drives the cleaning block to move. Under the guidance of the guide rod, the cleaning block moves along the extension direction of the screw and pushes the material on the screen plate to move toward the discharge port.

[0010] Preferably, the dredging mechanism includes a connecting block, a cam, a first spring and a plurality of dredging rods, a dredging groove is provided in the cleaning block, the connecting block slides in the dredging groove, the cam is sleeved on the guide rod, and the cam abuts against the connecting block; a limiting member for limiting the rotation of the cam is provided on the guide rod, a second motor is fixedly mounted on the outer wall of the grinding box, and one end of the guide rod is fixedly connected to the rotating shaft of the second motor; a fixing plate is fixedly connected to the inner wall of the dredging groove, the fixing plate is located above the connecting block, the two ends of the first spring are respectively fixedly connected to the fixing plate and the connecting block, a plurality of dredging rods are fixedly connected to one end of the connecting block away from the first spring, and a plurality of dredging rods are penetrated through the inner wall of the dredging groove and inserted into the sieve hole.

[0011] By adopting the above technical solution, while the cleaning block cleans the unqualified machine-made sand on the screen plate, the second motor drives the guide rod to rotate, and the rotation of the guide rod drives the cam to rotate. When the tip of the cam abuts against the connecting block, it pushes the connecting block to stretch the first spring to move, and the connecting block moves to push the dredging rod to insert into the screen hole. When the tip of the cam is away from the connecting block, the connecting block drives the dredging rod to move away from the screen hole under the elastic force of the first spring, and the cam moves along the extension direction of the guide rod under the action of the limiting member, and this process is repeated. During the linear movement of the cleaning block, the screen holes on the screen plate are dredged and cleaned at the same time, thereby reducing the possibility of blockage of the screen holes.

[0012] Preferably, the dredging mechanism also includes a shaking assembly for making the screen plate shake, the shaking assembly includes an eccentric wheel, a rotating rod, a third motor and a second spring, the relative inner walls of the grinding box are respectively provided with a first slide groove and a second slide groove, the two ends of the screen plate are respectively placed in the first slide groove and the second slide groove, the two ends of the rotating rod are respectively rotated on the relative inner walls of the first slide groove, and one end of the rotating rod is fixedly connected to the rotating shaft of the third motor; the eccentric wheel is fixedly sleeved on the rotating rod, and the eccentric wheel abuts against one side wall of the screen plate; the second spring is arranged in the second slide groove, and the two ends of the second spring are respectively fixedly connected to the inner wall of the second slide groove and the side wall of the screen plate.

[0013] By adopting the above technical solution, during the process of making machine-made sand, the third motor is turned on, and the rotation of the third motor drives the rotating rod to rotate, and the rotation of the rotating rod drives the eccentric wheel to rotate. The rotation of the top end of the eccentric wheel will push the screen plate to compress the second spring to move. When the top end of the eccentric wheel is away from the screen plate, the screen plate moves toward the first slide groove under the elastic force of the second spring. How to repeat this process, the screen plate swings back and forth, so that the objects on the screen plate move relative to each other, accelerating the falling of smaller objects through the screen holes, thereby helping to prevent the accumulation and blockage of objects on the screen plate, and helping to maintain the continuity and efficiency of the screening process.

[0014] Preferably, a water spray head is installed in the grinding box body, and a water receiving pipe is installed on the outer side wall of the grinding box body, and the water receiving pipe is connected to the water spray head.

[0015] By adopting the above technical solution, the water pipe is connected to the external water pipe and transports water to the water spray head. The water spray head sprays water mist into the grinding box, which can not only reduce the dust in the grinding box, but also cool the grinding gear.

[0016] Preferably, the cleaning block is provided with a pointed end close to an end away from the screen plate.

[0017] By adopting the above technical solution, the tip of the cleaning block can reduce the accumulation of falling materials on the cleaning block, and at the same time can reduce the contact area of ​​the cleaning block that is impacted by the falling materials.

[0018] Preferably, the limiting member is a limiting block, a limiting groove is formed on the peripheral side wall of the guide rod, the limiting block is fixedly connected to the side wall of the inner ring of the cam, and the limiting block slides in the limiting groove.

[0019] By adopting the above technical solution, under the action of the limiting block, the cam rotates together with the guide rod, and when the cleaning block moves, the connecting block moves to push the cam to move along the extension direction of the guide rod.

[0020] Preferably, the conveying assembly includes a second transmission belt, a plurality of baffles and a bracket for supporting the second transmission belt, the plurality of baffles are distributed on the surface of the second transmission belt, the second transmission belt is located on the side of the receiving platform, and the receiving platform is inclined toward the direction of the second transmission belt.

[0021] By adopting the above technical solution, unqualified machine-made sand is pushed out from the discharge port by the cleaning component and enters the receiving table. Because the receiving table is inclined, the unqualified machine-made sand slides from the receiving table to the second transmission belt under the action of gravity. During the transmission process of the second transmission belt, the barrier plate can reduce the possibility of material falling from the second transmission belt. The unqualified machine-made sand on the second transmission belt moves to the top and falls onto the first transmission belt, and then enters the grinding box again for secondary grinding, thereby saving manpower and improving the working efficiency of the machine-made sand production line.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The original material is conveyed into the grinding box through the first transmission belt through the feed port. After being ground by the grinding gear, the original material falls onto the screen plate and is screened by the screen holes on the screen plate. Qualified machine-made sand falls into the storage box through the screen holes, and unqualified machine-made sand is retained on the screen plate. The unqualified machine-made sand on the screen plate falls onto the receiving table through the discharge port under the action of the cleaning component. Subsequently, the unqualified machine-made sand is sent to the first transmission belt and enters the grinding box for grinding again until it is of qualified size under the action of the conveying component; thereby reducing the manpower waste in the sand making process; in addition, in the process of making machine-made sand, the dredging mechanism dredges the screen holes to reduce the possibility of blockage of the screen holes, thereby reducing the work intensity of the staff and improving the work efficiency of the machine-made sand production line;

[0024] 2. During the process of making machine-made sand, the third motor is turned on, the rotation of the third motor drives the rotating rod to rotate, the rotation of the rotating rod drives the eccentric wheel to rotate, the rotation of the top of the eccentric wheel will push the screen plate to compress the second spring to move, when the top of the eccentric wheel is away from the screen plate, the screen plate moves toward the first chute under the elastic force of the second spring, and the screen plate swings back and forth repeatedly, so that the objects on the screen plate move relative to each other, accelerating the falling of smaller objects through the screen holes, thereby helping to prevent the accumulation and blockage of objects on the screen plate, and helping to maintain the continuity and efficiency of the screening process;

[0025] 3. The unqualified machine-made sand is pushed out from the discharge port by the cleaning component and enters the receiving table. Because the receiving table is tilted, the unqualified machine-made sand slides from the receiving table to the second transmission belt under the action of gravity. During the transmission process of the second transmission belt, the barrier plate can reduce the possibility of material falling from the second transmission belt. The unqualified machine-made sand on the second transmission belt moves to the top and falls onto the first transmission belt, and then enters the grinding box again for secondary grinding, thereby saving manpower and improving the working efficiency of the machine-made sand production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a schematic diagram of the overall structure of a machine-made sand grinding and screening device.

[0027] Figure 2 The invention discloses a side sectional view of a machine-made sand grinding and screening device.

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0029] Figure 4 It is a schematic diagram of the structure of the protruding shaking component in this embodiment.

[0030] Description of reference numerals:

[0031] 1. Grinding box; 2. Grinding gear; 3. Storage box; 4. Feed inlet; 5. First transmission belt; 6. Discharge outlet; 7. Receiving platform; 8. Conveying assembly; 9. Screen plate; 10. Screen hole; 11. Cleaning assembly; 12. Dredging mechanism; 13. Cleaning block; 14. Screw rod; 15. Guide rod; 16. First motor; 17. Connecting block; 18. Cam; 19. First spring; 20. Dredging rod; 21. Dredging groove; 22. Limiting member; 23. Second motor; 24. Fixed plate; 25. Shaking assembly; 26. Eccentric wheel; 27. Rotating rod; 28. Third motor; 29. ​​Second spring; 30. First slide groove; 31. Second slide groove; 32. Spray head; 33. Tip; 34. Limiting block; 35. Water pipe; 36. Limiting groove; 37. Second transmission belt; 38. Blocking plate; 39. Bracket. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application embodiment discloses a machine-made sand grinding and screening device, such as Figure 1 and Figure 2 As shown, it includes a grinding box 1, a plurality of grinding gears 2, and the plurality of grinding gears 2 rotate in the grinding box 1. A driving motor for driving the grinding gears 2 is installed outside the grinding box 1. A storage box 3 for storing qualified machine-made sand is provided at the bottom end of the grinding box 1. The storage box 3 can be withdrawn to facilitate the collection and transportation of qualified machine-made sand by the staff. Feed ports 4 are respectively provided on the opposite side walls at the top of the grinding box 1. A first transmission belt 5 is provided at each of the two feed ports 4. One end of the first transmission belt 5 passes through the feed port 4 and penetrates deep into the grinding box 1, thereby reducing the diffusion of dust in the grinding box 1.

[0034] like Figure 1 and Figure 2 As shown, discharge ports 6 are respectively provided on the opposite side walls at the bottom of the grinding box 1, and the discharge ports 6 are arranged at an angle to reduce the accumulation of materials at the discharge ports 6. A receiving platform 7 is provided on the outside of the two discharge ports 6, and a conveying assembly 8 for conveying unqualified machine-made sand to the first transmission belt 5 is provided on the receiving platform 7; a sieve plate 9 is provided near the discharge port 6 in the grinding box 1, and the sieve plate 9 is in a rectangular shape, and a plurality of sieve holes 10 are provided on the sieve plate 9 in the vertical direction, and qualified machine-made sand falls from the sieve holes 10 into the storage box 3. A cleaning assembly 11 for cleaning unqualified machine-made sand on the sieve plate 9 and a dredging mechanism 12 for dredging the sieve holes 10 on the sieve plate 9 are provided in the grinding box 1.

[0035] like Figure 1 and Figure 2 As shown, the original material is transported into the grinding box 1 through the feed port 4 through the first transmission belt 5, and falls onto the sieve plate 9 after being ground by the grinding gear 2, and is screened by size through the sieve holes 10 on the sieve plate 9. Qualified machine-made sand falls into the storage box 3 through the sieve holes 10, and unqualified machine-made sand is retained on the sieve plate 9. The unqualified machine-made sand on the sieve plate 9 falls onto the receiving platform 7 through the discharge port 6 under the action of the cleaning component 11, and is then sent to the first transmission belt 5 under the action of the conveying component 8 to enter the grinding box 1 for the second time for grinding until the size is qualified; thereby reducing the manpower waste in the sand making process; in addition, in the process of making machine-made sand, the dredging mechanism 12 dredges the sieve holes 10 to reduce the possibility of blockage of the sieve holes 10, thereby reducing the work intensity of the staff and improving the work efficiency of the machine-made sand production line.

[0036] like Figure 1 and Figure 2As shown, the conveying assembly 8 includes a second transmission belt 37, a plurality of baffles 38, and a bracket 39 for supporting the second transmission belt 37. The plurality of baffles 38 are evenly distributed, fixed, and adhered to the surface of the second transmission belt 37. The side of the second transmission belt 37 is closely attached to the side of the receiving platform 7, and the receiving platform 7 is inclined toward the second transmission belt 37. The unqualified machine-made sand is pushed out from the discharge port 6 by the cleaning assembly 11 and enters the receiving platform 7. Because the receiving platform 7 is inclined, the unqualified machine-made sand slides from the receiving platform 7 to the second transmission belt 37 under the action of gravity. During the transmission process of the second transmission belt 37, the baffles 38 can reduce the possibility of the material on the second transmission belt 37 falling. When the unqualified machine-made sand on the second transmission belt 37 moves to the top, it falls onto the first transmission belt 5, and then enters the grinding box 1 again for secondary grinding, thereby saving manpower and improving the working efficiency of the machine-made sand production line.

[0037] like Figure 1 and Figure 2 As shown, a plurality of water spray heads 32 are installed on the inner wall at the top of the grinding box 1, and a plurality of water connecting pipes 35 are connected to the upper end surface of the outer side of the grinding box 1. The plurality of water connecting pipes 35 are correspondingly connected to the plurality of water spray heads 32. The grinding water spray heads 32 are connected to the water pipes 35 to spray water mist into the grinding box 1, which can not only reduce the dust in the grinding box 1, but also cool the grinding gear 2.

[0038] like Figure 2 and Figure 3 As shown, combined with Figure 4 As shown, the cleaning assembly 11 includes a cleaning block 13, a screw rod 14, a guide rod 15 and a first motor 16. The screw rod 14 is a bidirectional screw rod 14, and its axis is arranged in the horizontal direction. The two ends of the screw rod 14 are respectively rotatably connected to the opposite inner walls of the grinding box 1. The first motor 16 is fixedly installed on the outer wall of the grinding box 1. One end of the screw rod 14 is fixedly welded to the rotating shaft of the first motor 16. The cleaning block 13 is threadedly connected to the screw rod 14 and moves along the extension direction of the screw rod 14. A tip 33 is arranged at the upper end of the cleaning block 13. The tip 33 can reduce the accumulation of falling materials on the cleaning block, and at the same time can reduce the contact area of ​​the cleaning block 13 impacted by the falling materials. The guide rod 15 is cylindrical, and its axis is arranged in the horizontal direction. The two ends of the guide rod 15 are respectively rotatably connected to the relative inner walls of the grinding box 1, and the cleaning block 13 slides on the guide rod 15. The lower end surface of the cleaning block 13 slides on the screen plate 9. The first motor 16 is started to drive the screw rod 14 to rotate. At the same time, under the guidance of the guide rod 15, the cleaning block 13 moves along the extension direction of the screw rod 14 and pushes the material on the screen plate 9 to move toward the discharge port 6, so that the unqualified machine-made sand on the screen plate 9 can be pushed out from the discharge port 6.

[0039] like Figure 2 and Figure 3 As shown, combined with Figure 4As shown, the dredging mechanism 12 includes a connecting block 17, a cam 18, a plurality of first springs 19 and a plurality of dredging rods 20. A dredging groove 21 is provided in the cleaning block 13, and the dredging groove 21 extends in the length direction of the cleaning block 13; a plurality of fixed blocks are evenly arranged on the inner wall of one side of the dredging groove 21 along the length direction, and the plurality of fixed blocks and the plurality of first springs 19 are arranged one by one, the connecting block 17 is located under the fixed block, and the connecting block 17 slides vertically in the dredging groove 21, and the plurality of first springs 19 are arranged in a vertical manner, and the two ends of the first spring 19 are respectively fixedly welded to the lower end surface of the fixed block and the upper end surface of the connecting block 17. The cam 18 is sleeved on the guide rod 15, and a limiting member 22 for limiting the cam 18 is provided on the guide rod 15 so that the cam 18 rotates with the guide rod 15, and the cam 18 abuts against the upper end surface of the connecting block 17; a second motor 23 is fixedly installed on the outer wall of the grinding box 1, and one end of the guide rod 15 is fixedly welded to the rotating shaft of the second motor 23. A plurality of dredging rods 20 are uniformly welded to the lower end surface of the connecting block 17 , and the plurality of dredging rods 20 are penetrated through the inner wall of the dredging groove 21 and inserted into the sieve hole 10 .

[0040] like Figure 2 and Figure 3 As shown, the limiting member 22 is a limiting block 34, and a limiting groove 36 is provided on the side wall of the guide rod 15 along its axial direction. The limiting block 34 is fixedly welded to the inner ring side wall of the cam 18, and the limiting block 34 slides in the limiting groove 36. While the cleaning block 13 moves to clean the unqualified machine-made sand on the screen plate 9, the second motor 23 rotates to drive the guide rod 15 to rotate. Under the action of the limiting block 34, the guide rod 15 rotates to drive the cam 18 to rotate. When the tip 33 of the cam 18 abuts against the connecting block 17, the connecting block 17 is pushed to stretch the first spring 19 to move downward, and the connecting block 17 moves to push the dredging rod 20 to be inserted into the sieve hole 10. When the tip 33 of the cam 18 is away from the connecting block 17, the connecting block 17 drives the dredging rod 20 to move away from the sieve hole 10 under the elastic force of the first spring 19. The straight-line movement of the cleaning block 13 will push the cam 18 to move along the straight line. After the staff adjusts the speed of the first motor 16 and the second motor 23 to a suitable speed, the sieve holes 10 on the sieve plate 9 can be cleared and cleaned simultaneously during the straight-line movement of the cleaning block 13, thereby reducing the possibility of blockage of the sieve holes 10.

[0041] like Figure 2 and Figure 4As shown, the dredging mechanism 12 also includes a shaking assembly 25 for shaking the screen plate 9, and the shaking assembly 25 includes a plurality of eccentric wheels 26, a rotating rod 27, a third motor 28 and a plurality of second springs 29. The grinding box 1 is provided with a first slide groove 30 and a second slide groove 31 in the horizontal direction relative to the inner wall, and the two ends of the screen plate 9 slide in the first slide groove 30 and the second slide groove 31 respectively. The rotating rod 27 is cylindrical, and its axis moves in the horizontal direction. The two ends of the rotating rod 27 rotate in the relative inner wall of the first slide groove 30 respectively, and one end of the rotating rod 27 is fixedly welded to the rotating shaft of the third motor 28; the plurality of eccentric wheels 26 are fixedly sleeved on the rotating rod 27 and rotate in the first slide groove 30, and the plurality of eccentric wheels 26 abut against the side wall of the screen plate 9; the plurality of second springs 29 are horizontally arranged in the second slide groove 31, and the two ends of the second spring 29 are fixedly welded to the inner wall of the second slide groove 31 and the side wall of the screen plate 9 respectively.

[0042] like Figure 4 As shown, during the process of making machine-made sand, the third motor 28 is turned on, and the rotation of the third motor 28 drives the rotating rod 27 to rotate, and the rotation of the rotating rod 27 drives the eccentric wheel 26 to rotate, and the top of the eccentric wheel 26 pushes the screen plate 9 to compress the second spring 29 to move. When the top of the eccentric wheel 26 is away from the screen plate 9, the screen plate 9 moves toward the first slide groove 30 under the elastic force of the second spring 29. How to repeatedly make the screen plate 9 swing back and forth, so that the objects on the screen plate 9 move relative to each other, accelerating the smaller objects to fall through the screen hole 10, and then helping to prevent the accumulation and blockage of objects on the screen plate 9, and helping to maintain the continuity and efficiency of the screening process.

[0043] The implementation principle of the embodiment of the present application is: the staff places the material on the first transmission belt 5, the material enters the grinding box 1 through the first transmission belt 5, and the first transmission belt 5 extends into the grinding box 1 through the feed port 4 to reduce the diffusion of dust in the grinding box 1; the material falls onto the screen plate 9 after being ground by the grinding gear 2, and the screen plate 9 shakes under the action of the shaking component 25. The shaking of the screen plate 9 can accelerate smaller objects to fall through the sieve holes 10, thereby helping to prevent the accumulation and blockage of objects on the screen plate 9, thereby improving the continuity and efficiency of the screening process. The unqualified machine-made sand is retained on the sieve plate 9, and the first motor 16 drives the cleaning block 13 to move and push the unqualified machine-made sand on the sieve plate 9 to the discharge port 6. The inclined setting of the discharge port 6 helps the unqualified machine-made sand to fall onto the receiving platform 7. The receiving platform 7 is inclined toward the second transmission belt 37. The unqualified machine-made sand rolls onto the second transmission belt 37 under the action of gravity. Under the protection of the barrier, the unqualified machine-made sand is sent to the top of the first transmission belt 5 by the second transmission belt 37 and falls onto the first transmission belt 5 and enters the grinding box 1 again for secondary grinding until the size is qualified, thereby reducing the manpower waste in the sand making process; in addition, during the movement of the cleaning block 13, the dredging rod 20 on the cleaning block dredges the sieve hole 10 under the drive of the second motor 23, reducing the possibility of blockage of the sieve hole 10, thereby reducing the work intensity of the staff and improving the work efficiency of the machine-made sand production line.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A machine-made sand grinding and screening device, comprising a grinding box (1) and a grinding gear (2), wherein the grinding gear (2) rotates in the grinding box (1). Features: The grinding box (1) is provided with a storage box (3) for storing machine-made sand that meets the requirements; the grinding box (1) is provided with a feed port (4); a first transmission belt (5) is provided at the feed port (4); one end of the first transmission belt (5) passes through the feed port (4) and extends deep into the grinding box (1); the grinding box (1) is provided with a discharge port (6); a receiving platform (7) is provided outside the discharge port (6) of the grinding box (1); a device for receiving the material is provided next to the receiving platform (7). The material is conveyed to the conveying component (8) on the first transmission belt (5); a sieve plate (9) is arranged in the grinding box body (1) near the discharge port (6), and a plurality of sieve holes (10) are opened on the sieve plate (9), and the sieve plate (9) is located above the storage box (3); a cleaning component (11) for cleaning the material on the sieve plate (9) is arranged in the grinding box body (1), and a dredging mechanism (12) for dredging the sieve holes (10) on the sieve plate (9) is arranged in the grinding box body (1).

2. The machine-made sand grinding and screening device according to claim 1, Features: The cleaning assembly (11) comprises a cleaning block (13), a screw rod (14), a guide rod (15) and a first motor (16); the two ends of the screw rod (14) are respectively rotatably connected to the opposite inner walls of the grinding box (1); the first motor (16) is fixedly installed on the outer wall of the grinding box (1); one end of the screw rod (14) is fixedly connected to the rotating shaft of the first motor (16); the cleaning block (13) is threadedly connected to the screw rod (14); the two ends of the guide rod (15) are respectively rotatably connected to the opposite inner walls of the grinding box (1); the cleaning block (13) slides on the guide rod (15); and the cleaning block (13) slides on the screen plate (9).

3. The machine-made sand grinding and screening device according to claim 2, Features: The dredging mechanism (12) comprises a connecting block (17), a cam (18), a first spring (19) and a plurality of dredging rods (20); a dredging groove (21) is provided in the cleaning block (13); the connecting block (17) slides in the dredging groove (21); the cam (18) is sleeved on the guide rod (15); the cam (18) abuts against the connecting block (17); a limiting member (22) for limiting the rotation of the cam (18) is provided on the guide rod (15); a second motor (23) is fixedly mounted on the outer side wall of the grinding box (1); One end of the guide rod (15) is fixedly connected to the rotating shaft of the second motor (23); a fixing plate (24) is fixedly connected to the inner wall of the dredging groove (21), and the fixing plate (24) is located above the connecting block (17); two ends of the first spring (19) are respectively fixedly connected to the fixing plate (24) and the connecting block (17); a plurality of dredging rods (20) are fixedly connected to one end of the connecting block (17) away from the first spring (19); and a plurality of dredging rods (20) are penetrated through the inner wall of the dredging groove (21) and inserted into the sieve hole (10).

4. The machine-made sand grinding and screening device according to claim 1, Features: The dredging mechanism (12) further comprises a shaking assembly (25) for shaking the screen plate (9), the shaking assembly (25) comprising an eccentric wheel (26), a rotating rod (27), a third motor (28) and a second spring (29), the grinding box (1) is provided with a first slide groove (30) and a second slide groove (31) on the inner wall thereof, the two ends of the screen plate (9) slide on the first slide groove (30) and the second slide groove (31) respectively, the two ends of the rotating rod (27) are respectively Rotating on the relative inner wall of the first slide groove (30), one end of the rotating rod (27) is fixedly connected to the rotating shaft of the third motor (28); the eccentric wheel (26) is fixedly sleeved on the rotating rod (27), and the eccentric wheel (26) abuts against a side wall of the screen plate (9); the second spring (29) is arranged in the second slide groove (31), and the two ends of the second spring (29) are respectively fixedly connected to the inner wall of the second slide groove (31) and the side wall of the screen plate (9).

5. The machine-made sand grinding and screening device according to claim 1, Features: A water spray head (32) is installed inside the grinding box (1), and a water receiving pipe (35) is installed outside the grinding box, and the water receiving pipe (35) is connected to the water spray head (32).

6. The machine-made sand grinding and screening device according to claim 2, Features: The cleaning block (13) is provided with a pointed end (33) close to the end away from the screen plate (9).

7. The machine-made sand grinding and screening device according to claim 3, Features: The limiting member (22) is a limiting block (34), a limiting groove (36) is provided on the peripheral side wall of the guide rod (15), the limiting block (34) is fixedly connected to the inner wall of the cam (18), and the limiting block (34) slides in the limiting groove (36).

8. The machine-made sand grinding and screening device according to claim 1, Features: The conveying assembly (8) comprises a second transmission belt (37), a plurality of baffle plates (38) and a bracket (39) for supporting the second transmission belt (37); the plurality of baffle plates (38) are distributed on the surface of the second transmission belt (37); the second transmission belt (37) is located on the side of the receiving platform (7); and the receiving platform (7) is inclined toward the second transmission belt (37).

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