Gravel screening device

Abstract

The utility model relates to the field of gravel screening, and discloses a gravel screening device which comprises a screening box, a first mounting hole is formed in the upper portion of the left side of the screening box, a first motor is fixed to the upper portion of the outer wall of the left side of the screening box, and the output end of the first motor penetrates through the first mounting hole and extends into the screening box. And a first conveying shaft is fixedly installed at the output end of the first motor, a first conveying belt is arranged on the upper portion of the interior of the screening box, the first conveying shaft is connected with a driving shaft of the first conveying belt, and a first vibration motor is arranged on one side of the first conveying belt. According to the gravel screening device, the first conveying belt and the first vibration motor are used in cooperation, continuous screening of gravel is achieved, and the screening efficiency is improved. Meanwhile, a vibration screening mechanism ensures accurate screening of small particles, the workload and time of manual screening are reduced, and the working efficiency and the production capacity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and gravel screening, in particular to a sand and gravel screening device. Background Art

[0002] Construction projects require a lot of sand and gravel, but the sizes of sand and gravel are different. Therefore, the sand and gravel need to be carefully screened before construction. However, the current sand and gravel screening devices are not only easy to clog the screening holes during screening, but also unable to refine the larger sand and gravel, resulting in a waste of sand and gravel.

[0003] According to the Chinese patent with announcement number: CN113477502B, a sand and gravel screening device for construction engineering includes a screening box, both sides of the inner wall of the screening box are provided with a slide groove, and the inner wall of the slide groove is slidably provided with a slider, the outer wall on the opposite side of the two sliders is fixedly connected with the same screening mesh plate, and the top of the screening mesh plate is provided with multiple rows of screening mesh holes distributed at equal distances. When screening, the sand and gravel are driven by gravity to swing the screening mesh plate up and down by a second spring, a slider and a slide groove.

[0004] In the above scheme, the sand and gravel will touch the spiral blades when falling, thereby driving the rotating rod and the conical seat to rotate. The above scheme still has the following disadvantages: there may be large sand and gravel during the initial screening, and the falling of large sand and gravel may damage the rotating blades, resulting in the inability to continue dredging. Utility Model Content

[0005] The utility model aims to provide a sand and gravel screening device to solve the problem that there may be larger sand and gravel during the initial screening, and the falling of the larger sand and gravel may damage the rotating blades, resulting in the inability to continue dredging subsequently.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a sand and gravel screening device, including a screening box, a first mounting hole is opened on the upper left side of the screening box, a first motor is fixed on the upper left outer wall of the screening box, the output end of the first motor passes through the first mounting hole and extends to the interior of the screening box, a first transmission shaft is fixedly installed on the output end of the first motor, a first conveyor belt is arranged on the upper inside of the screening box, the first transmission shaft is connected to the driving shaft of the first conveyor belt, and a first vibration motor is arranged on one side of the first conveyor belt.

[0007] Preferably, a crushing box is provided at the rear of the interior of the screening box, a first through hole and a second through hole are provided on the left outer wall of the crushing box, a second motor and a third motor are installed at the rear of the left outer wall of the crushing box, the output ends of the second motor and the third motor pass through the first through hole and the second through hole respectively and extend to the interior of the crushing box, a rotating shaft is fixedly installed at the output ends of the second motor and the third motor, a plurality of crushing bars are fixed at equal angles on the outer wall of the rotating shaft, and a feeding port is provided on the inner bottom surface of the crushing box.

[0008] Preferably, a fourth mounting hole is opened at the lower part of the left outer wall of the screening box, a fourth motor is fixed at the lower part of the left side of the screening box, a second conveying shaft is fixed to the output end of the fourth motor, a second conveying belt is arranged at the lower part of the interior of the screening box, one end of the second conveying shaft is connected to the driving shaft of the second conveying belt, the higher end of the second conveying belt is located below the discharge port, and a second vibration motor is fixed to one side of the second conveying shaft.

[0009] Preferably, a plurality of screening holes are provided on the surfaces of the first conveyor belt and the second conveyor belt.

[0010] Preferably, a feed port is provided on the top surface of the screening box, the higher end of the first conveyor belt is located below the feed port, the other end of the first conveyor belt is located above the rolling box, a connecting port is provided on the lower rear side of the screening box, and a second collecting box is slidably provided on the inner bottom surface of the screening box, and the second collecting box corresponds to the connecting port.

[0011] Preferably, a discharge port is provided at the front side of the screening box, a first collecting box is fixed at the front side of the screening box, and the lower end of the second conveyor belt passes through the discharge port and extends to above the first collecting box.

[0012] Compared with the prior art, a sand and gravel screening device using the above technical solution has the following beneficial effects:

[0013] 1. During use, the staff pours sand and gravel into the screening box from the feed port. When the sand and gravel reach the first conveyor belt, the first motor is started. The output end of the first motor drives the first conveyor shaft to rotate, and the first conveyor shaft is connected to the drive shaft of the first conveyor belt, thereby driving the first conveyor belt to run. At this time, the staff starts the first vibration motor, and the first vibration motor generates vibration, thereby driving the first conveyor belt to vibrate. At this time, the smaller sand and gravel on the first conveyor belt will fall through the screening holes during the vibration process, completing the initial screening. During the vibration movement, the smaller sand and gravel fall first, and the larger sand and gravel will roll into the rolling box, reducing the situation where the screening holes are blocked by sand and gravel;

[0014] Through the coordinated use of the first conveyor belt and the first vibration motor, continuous screening of sand and gravel is achieved, thereby improving screening efficiency. At the same time, the vibration screening mechanism ensures accurate screening of smaller particles, reduces the workload and time of manual screening, and improves work efficiency and production capacity;

[0015] 2. During use, after preliminary screening, larger sand and gravel enter the rolling box, the second motor and the third motor are started, and the output ends of the second motor and the third motor drive the rotating shaft and the crushing bar to run synchronously. After the larger sand and gravel are crushed by the crushing bar, they reach the second conveyor belt through the discharge port. After the larger sand and gravel enter the rolling box, the crushing bar rotates to crush and refine the sand and gravel, thereby improving the utilization rate of the sand and gravel;

[0016] After the initial screening, the larger sand and gravel enter the rolling box and are crushed and refined by the crushing bars driven by the second and third motors, effectively reducing the problem of clogging of the screening holes caused by larger sand and gravel. At the same time, the rolling and refining process improves the utilization rate of larger sand and gravel and reduces resource waste;

[0017] 3. During use, when the larger sand and gravel arrive on the second conveyor belt, the staff starts the fourth motor, and the output end of the fourth motor drives the second conveyor shaft to rotate. At this time, the second conveyor shaft is connected with the driving shaft of the second conveyor belt, so as to drive the second conveyor belt to run. At this time, the staff starts the second vibration motor, and the second conveyor shaft drives the second conveyor belt to run. At this time, the sand and gravel are screened twice through the screening holes on the second conveyor belt. The sand and gravel that meet the requirements fall into the second collection box through the screening holes, and the sand and gravel that do not meet the requirements are conveyed to the first collection box through the second conveyor belt. The sand and gravel are separated and collected through the secondary screening, thereby reducing the staff's energy and facilitating the collection of sand and gravel.

[0018] The crushed and refined sand and gravel are screened for the second time through the second conveyor belt and the second vibration motor. The sand and gravel that meet the requirements fall into the second collection box through the screening hole, and the sand and gravel that do not meet the requirements are sent to the first collection box. This reduces the energy consumption of the staff, facilitates the collection and reuse of sand and gravel, and improves the efficiency of the entire work process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a perspective view of an embodiment.

[0020] Figure 2 It is a cutaway perspective view of a screening box according to an embodiment.

[0021] Figure 3 It is an exploded stereoscopic diagram of the first conveyor belt and the second conveyor belt of the embodiment.

[0022] Figure 4 It is a sectional stereoscopic view of the rolling box of the embodiment.

[0023] In the figure: 1. screening box; 2. first mounting hole; 3. first motor; 4. first transmission shaft; 5. first conveyor belt; 6. first vibration motor; 7. crushing box; 8. first through hole; 9. second through hole; 12. second motor; 13. third motor; 14. rotating shaft; 15. crushing bar; 16. discharge port; 17. fourth mounting hole; 18. fourth motor; 19. second transmission shaft; 20. second conveyor belt; 21. second vibration motor; 22. screening hole; 23. feed port; 24. discharge port; 25. connecting port; 26. first collecting box; 27. second collecting box. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-Figure 3 As shown, a sand and gravel screening device includes a screening box 1, a first mounting hole 2 is opened on the upper left side of the screening box 1, a first motor 3 is fixed on the upper left outer wall of the screening box 1, the output end of the first motor 3 passes through the first mounting hole 2 and extends to the inside of the screening box 1, a first conveying shaft 4 is fixedly installed on the output end of the first motor 3, a first conveyor belt 5 is arranged on the upper inside of the screening box 1, the first conveyor shaft 4 is connected to the driving shaft of the first conveyor belt 5, a first vibration motor 6 is arranged on one side of the first conveyor belt 5, a discharge port 24 is opened on the front side of the screening box 1, a first collecting box 26 is fixed on the front side of the screening box 1, and the lower end of the second conveyor belt 20 passes through the discharge port 24 and extends to the top of the first collecting box 26.

[0026] During use, the staff pours sand and gravel into the screening box 1 from the feed port 23. When the sand and gravel reach the first conveyor belt 5, the first motor 3 is started. The output end of the first motor 3 drives the first conveyor shaft 4 to rotate, and the first conveyor shaft 4 is connected to the drive shaft of the first conveyor belt 5, thereby driving the first conveyor belt 5 to run. At this time, the staff starts the first vibration motor 6, and the first vibration motor 6 generates vibration, thereby driving the first conveyor belt 5 to vibrate. At this time, the smaller sand and gravel on the first conveyor belt 5 will fall through the screening hole 22 during the vibration process, completing the preliminary screening. During the vibration movement, the smaller sand and gravel fall first, and the larger sand and gravel will roll into the rolling box 7, reducing the situation where the sand and gravel block the screening hole 22;

[0027] Through the coordinated use of the first conveyor belt 5 and the first vibration motor 6, continuous screening of sand and gravel is achieved, thereby improving screening efficiency. At the same time, the vibration screening mechanism ensures accurate screening of smaller particles, reduces the workload and time of manual screening, and improves work efficiency and production capacity.

[0028] like Figure 2-Figure 4As shown, a crushing box 7 is arranged at the rear of the interior of the screening box 1, and a first through hole 8 and a second through hole 9 are provided on the left outer wall of the crushing box 7. A second motor 12 and a third motor 13 are installed at the rear of the left outer wall of the crushing box 7. The output ends of the second motor 12 and the third motor 13 pass through the first through hole 8 and the second through hole 9 respectively, and extend to the interior of the crushing box 7. A rotating shaft 14 is fixedly installed at the output ends of the second motor 12 and the third motor 13, and a plurality of crushing bars 15 are fixed at equal angles on the outer wall of the rotating shaft 14. A feeding port 16 is provided on the inner bottom surface of the crushing box 7.

[0029] In use, after preliminary screening, larger sand and gravel enter the rolling box 7, the second motor 12 and the third motor 13 are started, and the output ends of the second motor 12 and the third motor 13 drive the rotating shaft 14 and the crushing bar 15 to run synchronously. After the larger sand and gravel are crushed by the crushing bar 15, they pass through the discharge port 16 and reach the second conveyor belt 20. After the larger sand and gravel enter the rolling box 7, the crushing bar 15 rotates to crush and refine the sand and gravel, thereby improving the utilization rate of the sand and gravel;

[0030] After the initial screening, the larger sand and gravel enter the rolling box 7 and are crushed and refined by the crushing bars 15 driven by the second motor 12 and the third motor 13, which effectively reduces the problem of clogging of the screening holes 22 caused by the larger sand and gravel. At the same time, the rolling and refining process improves the utilization rate of the larger sand and gravel and reduces the waste of resources.

[0031] like Figure 2 and Figure 3 As shown, a fourth mounting hole 17 is provided at the lower part of the left outer wall of the screening box 1, a fourth motor 18 is fixed at the lower part of the left side of the screening box 1, a second conveying shaft 19 is fixed at the output end of the fourth motor 18, a second conveying belt 20 is provided at the lower part of the interior of the screening box 1, one end of the second conveying shaft 19 is connected to the driving shaft of the second conveying belt 20, the higher end of the second conveying belt 20 is located below the unloading port 16, a second vibration motor 21 is fixed at one side of the second conveying shaft 19, and the surfaces of the first conveying belt 5 and the second conveying belt 20 are provided with a plurality of There are a plurality of screening holes 22, and a feed port 23 is provided on the top surface of the screening box 1. The higher end of the first conveyor belt 5 is located below the feed port 23, and the other end of the first conveyor belt 5 is located above the rolling box 7. A connecting port 25 is provided at the lower rear side of the screening box 1, and a second collecting box 27 is slidably provided on the inner bottom surface of the screening box 1, and the second collecting box 27 corresponds to the connecting port 25. One end of the second conveyor belt 20 passes through the discharge port 24 and extends to the top of the first collecting box 26. The other end of the second conveyor belt 20 is located below the discharge port 16.

[0032] During use, when the larger sand and gravel arrive on the second conveyor belt 20, the staff starts the fourth motor 18, and the output end of the fourth motor 18 drives the second conveyor shaft 19 to rotate. At this time, the second conveyor shaft 19 is connected with the driving shaft of the second conveyor belt 20, so as to drive the second conveyor belt 20 to run. At this time, the staff starts the second vibration motor 21, and the second conveyor shaft 19 drives the second conveyor belt 20 to run. At this time, the sand and gravel are screened twice through the screening holes 22 on the second conveyor belt 20. The sand and gravel that meet the requirements fall into the second collecting box 27 through the screening holes 22, and the sand and gravel that do not meet the requirements are conveyed to the first collecting box 26 through the second conveyor belt 20. The sand and gravel are separated and collected through the secondary screening, thereby reducing the staff's energy and facilitating the collection of sand and gravel.

[0033] The crushed and refined sand and gravel are screened for the second time through the second conveyor belt 20 and the second vibration motor 21. The sand and gravel that meet the requirements fall into the second collection box 27 through the screening hole 22, and the sand and gravel that do not meet the requirements are sent to the first collection box 26. This reduces the energy consumption of the staff, facilitates the collection and reuse of sand and gravel, and improves the efficiency of the entire work process.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sand and gravel screening device, comprising a screening box (1), characterized in that: A first mounting hole (2) is provided on the upper left side of the screening box (1); a first motor (3) is fixed on the upper left side outer wall of the screening box (1); an output end of the first motor (3) passes through the first mounting hole (2) and extends into the interior of the screening box (1); a first transmission shaft (4) is fixedly mounted on the output end of the first motor (3); a first conveyor belt (5) is provided on the upper inside of the screening box (1); the first transmission shaft (4) is connected to a driving shaft of the first conveyor belt (5); and a first vibration motor (6) is provided on one side of the first conveyor belt (5).

2. A sand and gravel screening device according to claim 1, characterized in that: A crushing box (7) is arranged at the rear of the interior of the screening box (1), and a first through hole (8) and a second through hole (9) are provided on the left outer wall of the crushing box (7). A second motor (12) and a third motor (13) are installed at the rear of the left outer wall of the crushing box (7). The output ends of the second motor (12) and the third motor (13) pass through the first through hole (8) and the second through hole (9) respectively, and extend to the interior of the crushing box (7). A rotating shaft (14) is fixedly installed at the output ends of the second motor (12) and the third motor (13), and a plurality of crushing bars (15) are fixed at equal angles on the outer wall of the rotating shaft (14). A feeding port (16) is provided on the inner bottom surface of the crushing box (7).

3. A sand and gravel screening device according to claim 2, characterized in that: A fourth mounting hole (17) is provided at the lower part of the left outer wall of the screening box (1); a fourth motor (18) is fixed at the lower part of the left side of the screening box (1); a second transmission shaft (19) is fixed to the output end of the fourth motor (18); a second conveyor belt (20) is provided at the lower part of the interior of the screening box (1); one end of the second transmission shaft (19) is connected to the driving shaft of the second conveyor belt (20); the higher end of the second conveyor belt (20) is located below the discharge port (16); and a second vibration motor (21) is fixed to one side of the second transmission shaft (19).

4. A sand and gravel screening device according to claim 3, characterized in that: A plurality of screening holes (22) are provided on the surfaces of the first conveyor belt (5) and the second conveyor belt (20).

5. A sand and gravel screening device according to claim 4, characterized in that: The top surface of the screening box (1) is provided with a feed inlet (23), the higher end of the first conveyor belt (5) is located below the feed inlet (23), the other end of the first conveyor belt (5) is located above the rolling box (7), a connecting port (25) is provided at the lower rear side of the screening box (1), and a second collecting box (27) is slidably provided on the inner bottom surface of the screening box (1), and the second collecting box (27) corresponds to the connecting port (25).

6. A sand and gravel screening device according to claim 3, characterized in that: The front side of the screening box (1) is provided with a discharge port (24), the front side of the screening box (1) is fixed with a first collecting box (26), and the lower end of the second conveyor belt (20) passes through the discharge port (24) and then extends to the top of the first collecting box (26).

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