Sand screening device

Abstract

The utility model discloses a sand screening device, and belongs to the field of bridge construction equipment. A sand screening device comprises a box, a filter screen of a circular truncated cone structure is slidably connected in the box, a hollow column is rotatably arranged in the filter screen, an auger is fixedly connected to the hollow column, a hopper fixedly connected with the box is rotatably connected to the upper side of the hollow column, a rotating shaft is fixedly connected to the lower side of the hollow column, and the rotating shaft is in transmission connection with a motor fixedly installed on the box. A fixed plate is fixedly connected to the rotating shaft, two guide wheels are fixedly connected to the fixed plate, two guide plates are fixedly connected to the bottom of the filter screen, and the guide wheels are in rolling contact with the guide plates. The motor drives the rotating shaft to rotate, the rotating shaft drives the hollow column and the packing auger to rotate, the packing auger drives sand to spirally ascend on the inclined face of the filter screen, meanwhile, the guide wheel and the guide plate make intermittent contact to enable the filter screen to vibrate, fine sand penetrates through the filter screen to be discharged, gravel sundries and the like are discharged through an upper end opening of the filter screen, continuous and effective filtering of the filter screen is achieved, and use is convenient.

Description

Technical Field

[0001] The present application relates to the field of bridge construction equipment, and more specifically, to a sand screening device. Background Art

[0002] Bridge construction is the process of building a bridge according to the design content. Bridge construction requires a large amount of concrete support structure, and the sand raw material needs to be screened in the early stage of concrete production. The patent document with the prior art publication number CN219586567U provides a road bridge construction device, which drives the worm to rotate through the work of the motor, and the rotation of the worm drives the worm wheel to rotate, and the rotation of the worm wheel drives the cam to rotate. The rotation of the cam can drive the screening box to shake up and down, thereby accelerating the screening of the sand. When the transmission chain rotates, the triangular blocks on both sides can squeeze the rollers respectively, so that the first screen and the second screen shake left and right, which can also accelerate the screening of the sand.

[0003] In view of the above-mentioned related technologies, the inventor believes that since the first screen and the second screen are arranged horizontally, the crushed stones and debris after screening are easily accumulated on the top, thereby reducing the screening efficiency and requiring regular manual cleaning, which is inconvenient. Therefore, we propose a sand screening device. Utility Model Content

[0004] In order to improve the problems raised in the above background technology, the present application provides a sand screening device.

[0005] The present application provides a sand screening device, which adopts the following technical solution:

[0006] A sand screening device comprises a box body, a filter screen with a truncated cone structure is slidably connected to the box body, a hollow column is rotatably provided in the filter screen, an auger with a truncated cone structure is fixedly connected to the hollow column, a hopper fixedly connected to the box body is rotatably connected on the upper side of the hollow column, and a rotating shaft is fixedly connected on the lower side, the rotating shaft is transmission-connected to a motor fixedly installed on the box body, a fixed plate is fixedly connected to the rotating shaft, two guide wheels are fixedly connected to the fixed plate, two guide plates are fixedly connected to the bottom of the filter screen, and the guide wheels are in rolling contact with the guide plates.

[0007] By adopting the above technical scheme, the sand passes through the hopper into the hollow column and enters the filter screen through the hollow column. The motor drives the hollow column and the auger to rotate through the rotating shaft. The outer side of the auger fits with the filter screen, driving the sand to spiral up. The guide wheel contacts the guide plate to make the filter screen vibrate up and down. The fine sand falls downward through the filter screen, and the gravel and debris are intercepted in the filter screen. The auger drives the gravel and debris to gradually move upward, and finally discharged through the filter screen port.

[0008] Optionally, a plurality of sliding sleeves are fixedly connected to the filter screen, the sliding sleeves are slidably connected to a plurality of fixed rods fixedly connected to the box body, and the sliding sleeves are elastically connected to the fixed rods via springs.

[0009] By adopting the above technical solution, the sliding sleeve cooperates with the fixing rod and the spring to enable the filter screen to move up and down. When the guide wheel contacts the guide plate, the filter screen vibrates up and down, thereby improving the filtering effect on the sand.

[0010] Optionally, a plurality of through holes are opened at the lower end of the hollow column, and a conical block is fixedly connected inside the hollow column.

[0011] By adopting the above technical solution, after the sand enters the hollow column, it is discharged into the filter screen through the through hole under the limitation of the conical block.

[0012] Optionally, a discharge trough A fixedly connected to the box body is provided on the lower side of the filter screen, an annular collection trough fixedly connected to the box body is provided on the upper side of the filter screen, and a discharge trough B is fixedly connected to the annular collection trough.

[0013] By adopting the above technical solution, the fine sand sieved from the filter screen falls onto the discharge trough A and is discharged through the discharge trough A, and the gravel and debris discharged from the upper end of the filter screen falls into the annular aggregate trough and is discharged through the discharge trough B.

[0014] Optionally, a stirring rod is provided in the hopper, and one end of the stirring rod is connected and fixed to the hollow column.

[0015] By adopting the above technical solution, the hollow column drives the stirring rod to rotate synchronously, and the stirring rod stirs the sand material accumulated in the hopper to prevent the discharge port from being blocked.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The motor drives the shaft to rotate, and the shaft drives the hollow column and auger to rotate. The auger drives the sand to spiral up on the inclined surface of the filter. At the same time, the guide wheel and the guide plate are in intermittent contact to make the filter vibrate, so that the fine sand passes through the filter and is discharged, and the gravel and debris are discharged through the port on the filter, so that the filter can continuously and effectively filter and is easy to use.

[0018] 2. The hollow column drives the stirring rod to rotate synchronously, and the stirring rod stirs the sand accumulated in the hopper to prevent the discharge port of the hopper from being blocked, further improving the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a sand screening device according to an embodiment of the present application;

[0020] Figure 2This is a schematic diagram of the internal structure of a box of a sand screening device according to an embodiment of the present application;

[0021] Figure 3 This is a schematic diagram of the filter screen and guide plate structure of a sand screening device according to an embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the hollow column and auger structure of a sand screening device according to an embodiment of the present application;

[0023] Explanation of the numbers in the figure: 1. Box body; 2. Filter screen; 3. Sliding sleeve; 4. Fixed rod; 5. Spring; 6. Hollow column; 7. Auger; 8. Hopper; 9. Rotating shaft; 10. Motor; 11. Conical block; 12. Fixed plate; 13. Guide wheel; 14. Guide plate; 15. Discharge trough A; 16. Annular collection trough; 17. Discharge trough B; 18. Stirring rod. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figure 1-4 The present application includes a box body 1, a filter screen 2 with a truncated cone structure is slidably connected in the box body 1, a hollow column 6 is rotatably provided in the filter screen 2, a screw dragon 7 with a truncated cone structure is fixedly connected to the hollow column 6, a hopper 8 fixedly connected to the box body 1 is rotatably connected on the upper side of the hollow column 6, a rotating shaft 9 is fixedly connected on the lower side, the rotating shaft 9 is transmission-connected to a motor 10 fixedly installed on the box body 1, a fixed plate 12 is fixedly connected to the rotating shaft 9, two guide wheels 13 are fixedly connected to the fixed plate 12, and two guide plates are fixedly connected to the bottom of the filter screen 2 14, the guide wheel 13 and the guide plate 14 are in rolling contact, the sand passes through the hopper 8 into the hollow column 6, and enters the filter screen 2 through the hollow column 6, the motor 10 drives the hollow column 6 and the auger 7 to rotate through the rotating shaft 9, the outer side of the auger 7 is in contact with the filter screen 2, driving the sand to spiral up, the guide wheel 13 and the guide plate 14 are in contact with the filter screen 2 to make the filter screen 2 vibrate up and down, the fine sand falls downward through the filter screen 2, the gravel and debris are intercepted in the filter screen 2, the auger 7 drives the gravel and debris to gradually move upward, and finally discharged through the port of the filter screen 2.

[0026] Reference Figure 3 A plurality of sliding sleeves 3 are fixedly connected to the filter screen 2, and the sliding sleeves 3 are slidably connected to a plurality of fixed rods 4 fixedly connected in the box body 1, and the sliding sleeves 3 and the fixed rods 4 are elastically connected through springs 5. The sliding sleeves 3 cooperate with the fixed rods 5 and the springs 6 to enable the filter screen 2 to move up and down. When the guide wheel 13 contacts the guide plate 14, the filter screen 2 vibrates up and down, thereby improving the filtering effect of the sand material and preventing gravel and debris from being blocked in the filter screen 2.

[0027] Reference Figure 4A plurality of through holes are provided at the lower end of the hollow column 6, and a conical block 11 is fixedly connected inside the hollow column 6. After the sand enters the hollow column 6, it is discharged into the filter screen 2 through the through holes under the limit of the conical block 11.

[0028] Reference Figure 2 A discharge trough A15 fixedly connected to the box body 1 is provided at the lower side of the filter screen 2, and an annular aggregate trough 16 fixedly connected to the box body 1 is provided at the upper side of the filter screen 2. A discharge trough B17 is fixedly connected to the annular aggregate trough 16. The fine sand sifted from the filter screen 2 falls onto the discharge trough A15 and is discharged through the discharge trough A15. The gravel and debris discharged from the upper end of the filter screen 2 falls into the annular aggregate trough 16 and is discharged through the discharge trough B17.

[0029] Reference Figure 2 A stirring rod 18 is provided in the hopper 8, one end of which is fixedly connected to the hollow column 6. The hollow column 6 drives the stirring rod 18 to rotate synchronously. The stirring rod 18 stirs the sand material accumulated in the hopper 8 to prevent the discharge port from being blocked.

[0030] The implementation principle of a sand screening device in an embodiment of the present application is as follows: the sand is piled in a hopper 8, the sand enters the filter screen 2 through a hollow column 6, the motor 10 drives the hollow column 6 and the auger 7 to rotate, the auger 7 drives the sand to rise along the inclined surface of the filter screen 2, the guide wheel 13 and the guide plate 14 are intermittently in contact, thereby driving the filter screen 2 to vibrate, so that the fine sand passes through the filter screen 2 and falls onto the discharge trough A15, the auger 7 drives the intercepted gravel and debris to continue to rise, and is discharged through the port of the filter screen 2 and falls into the annular aggregate trough 16, and is discharged through the discharge trough B17.

Claims

1. A sand screening device, characterized in that: The invention comprises a box body (1), wherein a filter screen (2) with a truncated cone structure is slidably connected inside the box body (1), a hollow column (6) is rotatably provided inside the filter screen (2), a screw dragon (7) with a truncated cone structure is fixedly connected to the hollow column (6), a hopper (8) fixedly connected to the box body (1) is rotatably connected on the upper side of the hollow column (6), and a rotating shaft (9) is fixedly connected on the lower side, the rotating shaft (9) is drivingly connected to a motor (10) fixedly mounted on the box body (1), a fixed plate (12) is fixedly connected to the rotating shaft (9), two guide wheels (13) are fixedly connected to the fixed plate (12), two guide plates (14) are fixedly connected to the bottom of the filter screen (2), and the guide wheels (13) are in rolling contact with the guide plates (14).

2. A sand screening device according to claim 1, characterized in that: A plurality of sliding sleeves (3) are fixedly connected to the filter screen (2); the sliding sleeves (3) are slidably connected to a plurality of fixed rods (4) fixedly connected inside the box body (1); and the sliding sleeves (3) and the fixed rods (4) are elastically connected via springs (5).

3. A sand screening device according to claim 1, characterized in that: A plurality of through holes are provided at the lower end of the hollow column (6), and a conical block (11) is fixedly connected inside the hollow column (6).

4. A sand screening device according to claim 1, characterized in that: A discharge trough A (15) fixedly connected to the housing (1) is provided on the lower side of the filter screen (2), an annular material collection trough (16) fixedly connected to the housing (1) is provided on the upper side of the filter screen (2), and a discharge trough B (17) is fixedly connected to the annular material collection trough (16).

5. The sand screening device according to claim 1, characterized in that: A stirring rod (18) is arranged in the hopper (8), and one end of the stirring rod (18) is connected and fixed to the hollow column (6).

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