Gravel screening device

Abstract

The broken stone screening device belongs to the technical field of broken stone screening and comprises a separation box, a feeding port is formed in the top of the separation box, the bottom of the separation box communicates with a screening box, and a first material guide port and a second material guide port are sequentially formed in the side, close to a first screening plate and a second screening plate, of the screening box; the bottom of the screening box communicates with a collecting box. The gravel screening device has the advantage that the screening efficiency and effect of the gravel screening device are improved.

Description

Technical Field

[0001] The present application relates to the field of gravel screening technology, and in particular to a gravel screening device. Background Art

[0002] In the process of infrastructure construction and resource development, gravel screening is an important link. Effective screening can improve the utilization rate of raw materials and ensure the quality of the project.

[0003] Currently, there are many types of screening equipment on the market, but they often suffer from low screening efficiency. In the existing technology, screening is generally performed using an inclined and fixed screen. During screening, gravel is placed on the screen, where it rolls down from top to bottom, achieving screening. However, in the existing technology, gravel is usually placed in a fixed position on the screen, such as in the middle of the screen's width. This does not fully utilize the width of the screen, and a large amount of granular material is prone to accumulating in one place. As a result, the gravel cannot be fully dispersed on the screen, reducing screening efficiency and affecting the screening effect.

[0004] Therefore, how to improve the screening efficiency and effect of gravel screening equipment has become an urgent problem that needs to be solved in the industry. Utility Model Content

[0005] In order to improve the screening efficiency and effect of a gravel screening device, the present application provides a gravel screening device.

[0006] The present application provides a gravel screening device that adopts the following technical solution:

[0007] A crushed stone screening device comprises a separation box, a feed port is provided on the top of the separation box, a first separation roller and a second separation roller are rotatably connected inside the separation box, the first separation roller and the second separation roller are symmetrically arranged in the separation box, a first driving assembly that drives the first separation roller and the second separation roller to rotate is provided on the outer wall of the separation box, the bottom of the separation box is connected to a screening box, a first screening plate and a second screening plate are rotatably provided in the screening box, the first screening plate and the second screening plate are both inclined, the first screening plate and the second screening plate are both provided with screening holes, the screening holes on the first screening plate are larger than the second screening plate, the screening box is close to the first screening plate and the second screening plate. A first material guide port and a second material guide port are sequentially provided on one side of the plate rotating shaft, a first guide plate is provided on the side of the first screen plate away from the rotating shaft, and a second guide plate is provided on the side of the second screen plate away from the rotating shaft, a first sliding groove and a second sliding groove for sliding cooperation between the first guide plate and the second guide plate are provided on the side wall of the screening box, a first return spring and a second return spring are fixedly connected to the lower parts of the first guide plate and the second guide plate in sequence, a first cam and a second cam are sequentially rotated on the outer wall of the screening box close to the first guide plate, a second drive assembly and a third drive assembly for driving the first cam and the second cam to rotate are sequentially provided on the outer wall of the screening box, and a collecting box is connected to the bottom of the screening box.

[0008] By adopting the above technical solution, the operator first uses the first drive assembly, the second drive assembly, and the third drive assembly to respectively rotate the separation roller and the first and second cams in the separation box. The first and second cams rotate to drive the first and second guide plates to swing within the first and second sliding grooves. At this time, the first and second return springs reciprocate in a state of compression and recovery as the cams rotate. The swinging of the first and second guide plates drives the first and second screening plates to swing. The operator then pours the gravel to be screened into the separation box through the feed inlet. The gravel is evenly dispersed by the first and second separation rollers and falls into the screening box below for screening. After double screening by the first and second screening plates, those that meet the specifications fall into the next layer, while those that do not meet the specifications are discharged through the first and second guide ports respectively. The gravel after double screening falls into the collection box. Multi-layer screening improves the efficiency and effectiveness of screening.

[0009] Preferably, the first driving assembly includes a driving gear sleeved on the rotating shaft of the first separation roller, a driven gear sleeved on the rotating shaft of the second separation roller, and a driving motor arranged on the rotating shaft of the first separation roller, the driving gear and the driven gear are engaged with each other, a fixed box body is provided on the outer wall of the separation box body, and the driving motor is fixedly connected to the inner wall of the fixed box body.

[0010] By adopting the above technical solution, the operator starts the drive motor, the rotation of the drive motor drives the driving gear to rotate, and the rotation of the driving gear drives the driven gear to rotate, thereby realizing that the first separation roller and the second separation roller in the separation box rotate in opposite directions as the rotating shaft rotates, completing the separation and dispersion of the gravel entering.

[0011] Preferably, the second driving assembly includes a pulley 1 mounted on the rotating shaft of the second separation roller, a pulley 2 mounted on the rotating shaft of the first cam, and a belt 1 mounted on the outer circumferences of the pulley 1 and the pulley 2.

[0012] By adopting the above technical solution, the driving motor rotates to drive the pulley 1 mounted on the first and second separation rollers to rotate, and the pulley 1 drives the first cam to rotate through the pulley 2 and the belt 1, thereby realizing multiple cycles of striking the first guide plate by the first cam. The first guide plate reciprocates under the action of the first return spring at its bottom and the first cam, which facilitates the operator to achieve the initial screening of the gravel.

[0013] Preferably, the third driving assembly includes a pulley three mounted on the first cam rotating shaft, a pulley four mounted on the second cam rotating shaft, and a belt two mounted on the outer circumferences of the pulley three and the pulley four.

[0014] By adopting the above technical solution, the driving motor rotates to drive the pulley 1 mounted on the first and second separation rollers to rotate, the pulley 1 drives the first cam to rotate through the pulley 2 and the belt 1, the rotation of the first cam drives the pulley 3 to rotate, the pulley 3 drives the second cam to rotate through the pulley 4 and the belt 2, thereby realizing multiple cycles of striking the second guide plate by the second cam, and the second guide plate reciprocates under the action of the second return spring at its bottom and the second cam, so that the operator can realize secondary screening of the gravel.

[0015] Preferably, the rotating shafts of the first screen plate and the second screen plate are both provided with torsion springs near the inner wall of the screen box, and the first screen plate and the second screen plate are provided with receiving grooves for receiving the torsion springs.

[0016] By adopting the above technical solution, the provision of the torsion spring further enhances the resilience of the first screening plate and the second screening plate, thereby reducing the probability of failure of the first screening plate and the second screening plate.

[0017] Preferably, a guide groove is provided in the collection box, and inclined surfaces are provided on all four sides of the guide groove.

[0018] By adopting the above technical solution, the provision of the guide trough is conducive to the gravel falling from the screening box into the collection box.

[0019] Preferably, a collection drawer is slidably provided in the collection box.

[0020] By adopting the above technical solution, the crushed stones falling through the screening items fall into the collection drawer through the guide trough, making it convenient for operators to centrally collect the screened crushed stones.

[0021] Preferably, a handle is provided on the outside of the collection drawer.

[0022] By adopting the above technical solution, the operator can pull the collection drawer out of the collection box by pulling the handle and clean the gravel therein.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The operator first uses the first drive assembly, the second drive assembly and the third drive assembly to respectively drive the separation roller in the separation box to rotate and the first cam and the second cam to rotate; the first cam and the second cam rotate to drive the first guide plate and the second guide plate to swing in the first sliding groove and the second sliding groove, at this time the first return spring and the second return spring follow the rotation of the cam in a compression and recovery state to reciprocate; the swing of the first guide plate and the second guide plate drives the first screening plate and the second screening plate to swing; then the operator pours the gravel to be screened into the separation box through the feed port, and the gravel is evenly dispersed by the joint action of the first separation roller and the second separation roller and falls into the screening box below for screening. After double-layer screening by the first screening plate and the second screening plate, those that meet the specifications fall into the next layer, and those that do not meet the specifications are respectively discharged through the first guide port and the second guide port; the gravel after double-layer screening falls into the collection box. Multi-layer screening improves the efficiency and effect of screening;

[0025] 2. The operator starts the drive motor, which drives the driving gear to rotate, and the driving gear drives the driven gear to rotate, so that the first separation roller and the second separation roller in the separation box rotate in opposite directions as the rotating shaft rotates, completing the separation and dispersion of the incoming gravel;

[0026] 3. The driving motor rotates to drive the pulley 1 mounted on the first and second separation rollers to rotate. The pulley 1 drives the first cam to rotate through the pulley 2 and the belt 1, thereby realizing multiple cycles of striking the first guide plate by the first cam. The first guide plate reciprocates under the action of the first return spring at its bottom and the first cam, which facilitates the operator to achieve initial screening of the gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a gravel screening device according to an embodiment of the present application.

[0028] Figure 2This is a schematic diagram of the internal structure of a gravel screening device according to an embodiment of the present application.

[0029] Figure 3 yes Figure 2 Enlarged schematic diagram of point A in the middle.

[0030] Figure 4 yes Figure 2 Enlarged schematic diagram of point B in the middle.

[0031] Figure 5 yes Figure 2 Enlarged schematic diagram at point C in the middle.

[0032] Figure 6 yes Figure 2 Enlarged schematic diagram at point D in the middle.

[0033] Figure numerals: 1. separation box; 11. feed port; 12. first separation roller; 13. second separation roller; 2. first drive assembly; 21. driving gear; 22. driven gear; 23. drive motor; 24. fixed box; 3. screening box; 31. first screening plate; 32. second screening plate; 33. first material guide port; 34. second material guide port; 35. first guide plate; 36. second guide plate; 37. first sliding groove; 38. second sliding groove; 39. first return spring; 4. second return spring; 41. first cam; 42. second cam; 43. torsion spring; 5. second drive assembly; 51. pulley one; 52. pulley two; 53. belt one; 6. third drive assembly; 61. pulley three; 62. pulley four; 63. belt two; 7. collection box; 71. guide groove; 72. collection drawer; 73. handle. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 -Attached Figure 6 This application is described in further detail.

[0035] The embodiment of the present application discloses a crushed stone screening device. Figure 1 、 Figure 2 A gravel screening device includes a separation box 1, with a feed inlet 11 provided at the top of the separation box 1. A first separation roller 12 and a second separation roller 13 are rotatably connected inside the separation box 1. The first separation roller 12 and the second separation roller 13 are symmetrically arranged in the separation box 1 about the feed inlet 11. A fixed box body 24 is provided on the outer wall of the separation box 1, and the fixed box body 24 is fixedly connected to the outer wall of the separation box 1. A first drive assembly 2 for driving the first separation roller 12 and the second separation roller 13 to rotate is provided on the outer wall of the separation box 1.

[0036] The arrangement of the first separating roller 12 and the second separating roller 13 facilitates the operator to separate the screened gravel so as to evenly carry out subsequent screening work.

[0037] Reference Figure 2 The first drive assembly 2 includes a driving gear 21, a driven gear 22, and a drive motor 23. The driving gear 21 is sleeved on the rotating shaft of the first separation roller 12, and the driven gear 22 is sleeved on the rotating shaft of the second separation roller 13. The driving gear 21 and the driven gear 22 are meshed with each other. The output shaft of the drive motor 23 is fixedly connected to the rotating shaft of the first separation roller 12.

[0038] The operator starts the drive motor 23, and the drive motor 23 rotates to drive the driving gear 21 to rotate, and the driving gear 21 rotates to drive the driven gear 22 to rotate, so that the first separation roller 12 and the second separation roller 13 rotate simultaneously in opposite directions as the rotating shaft rotates, thereby achieving uniform separation of the gravel.

[0039] Reference Figure 1 、 Figure 2 The bottom of the separation box 1 is connected to a screening box 3. A first screening plate 31 and a second screening plate 32 are swingably arranged inside the screening box 3. The first screening plate 31 and the second screening plate 32 are both inclined. The first screening plate 31 and the second screening plate 32 are both provided with screening holes. The screening holes on the first screening plate 31 are larger than those on the second screening plate 32. A first material guide port 33 and a second material guide port 34 are sequentially provided on one side of the screening box 3 near the rotation axis of the first screening plate 31 and the second screening plate 32. The first material guide port 33 and the second material guide port 34 are fixedly connected to the outer wall of the screening box 3.

[0040] Reference Figure 2 、 Figure 3 A first guide plate 35 is provided on the side of the first screening plate 31 away from the rotation axis. The first guide plate 35 is fixedly connected to the first screening plate 31. A first sliding groove 37 is defined in the sidewall of the screening box 3. The inner wall of the first sliding groove 37 slides in engagement with the outer wall of the first guide plate 35. A first return spring 39 is provided below the first guide plate 35. One end of the first return spring 39 is fixedly connected to the first guide plate 35, and the other end is fixedly connected to the inner wall of the first sliding groove 37. The provision of the first return spring 39 supports and resets the first screening plate 31.

[0041] Reference Figure 2 The outer wall of the screening box 3 is provided with a second driving assembly 5 for driving the first cam 41 to rotate. The second driving assembly 5 includes a pulley 1 51, a pulley 2 52 and a belt 1 53. The pulley 1 51 is sleeved on the rotating shaft of the second separating roller 13, the pulley 2 52 is sleeved on the rotating shaft of the first cam 41, and the belt 1 53 is sleeved on the outer circumferences of the pulley 1 51 and the pulley 2 52.

[0042] The operator starts the drive motor 23 to rotate the pulley 1 51 mounted on the second separating roller 13. The pulley 1 51 drives the first cam 41 to rotate through the pulley 2 52 and the belt 1 53, thereby realizing multiple cycles of striking the first guide plate 35 by the first cam 41. The first guide plate 35 reciprocates under the action of the first return spring 39 at its bottom and the first cam 41, so that the operator can realize the initial screening of the gravel.

[0043] Reference Figure 2 、 Figure 4 A second guide plate 36 is provided on the side of the second screening plate 32 away from the rotation axis. The second guide plate 36 is fixedly connected to the second screening plate 32. A second sliding groove 38 is defined in the sidewall of the screening box 3. The inner wall of the second sliding groove 38 slides in engagement with the outer wall of the second guide plate 36. A second return spring 4 is provided below the second guide plate 36. One end of the second return spring 4 is fixedly connected to the second guide plate 36, and the other end is fixedly connected to the inner wall of the second sliding groove 38. The provision of the second return spring 4 supports and resets the second screening plate 32.

[0044] Reference Figure 2 The outer wall of the screening box 3 is provided with a third driving assembly 6 for driving the first cam 41 to rotate. The second driving assembly 5 includes a pulley 3 61, a pulley 4 62 and a belt 2 63. The pulley 3 61 is sleeved on the rotating shaft of the first cam 41, the pulley 4 62 is sleeved on the rotating shaft of the second cam 42, and the belt 2 63 is sleeved on the outer circumference of the pulley 3 61 and the pulley 4 62.

[0045] The rotation of the first cam 41 drives the pulley three 61 to rotate, and the pulley three 61 drives the second cam 42 to rotate through the pulley four 62 and the belt two 63, thereby realizing multiple cycles of striking the second guide plate 36 by the second cam 42. The second guide plate 36 reciprocates under the action of the second return spring 4 at its bottom and the second cam 42, which facilitates the operator to achieve secondary screening of the gravel.

[0046] Reference Figure 2 、 Figure 5 A torsion spring 43 is provided at the rotation axis of the first screening plate 31. One end of the torsion spring 43 is fixedly connected to the first screening plate 31, and the other end is fixedly connected to the inner wall of the screening box 3. The provision of the torsion spring 43 further enhances the resilience of the first screening plate 31, thereby enhancing the overall stability of the equipment.

[0047] Reference Figure 2 、 Figure 6 A torsion spring 43 is provided at the rotation axis of the second screening plate 32, one end of the torsion spring 43 is fixedly connected to the second screening plate 32, and the other end is fixedly connected to the inner wall of the screening box 3. The provision of the torsion spring 43 further enhances the resilience of the second screening plate 32, thereby enhancing the overall stability of the equipment.

[0048] Reference Figure 1 、 Figure 2 The collection box 7 is provided with a guide groove 71, which has inclined surfaces on all four sides and is fixedly connected to the inner wall of the collection box 7. The collection box 7 is provided with a collection drawer 72, which is slidably arranged in the collection box 7. The outer wall of the collection drawer 72 is provided with a handle 73.

[0049] The operator can extract the collection drawer 72 from the collection box 7 by the handle 73 and clean the gravel. The provision of the guide trough 71 is conducive to the gravel falling from the screening box into the collection box 7 interior.

[0050] The implementation principle of a gravel screening device according to an embodiment of the present application is as follows: the operator starts the drive motor 23 to drive the first separation roller 12 and the second separation roller 13 to rotate; then the operator pours the gravel to be screened into the separation box 1 through the feed port 11 for separation processing; the separated gravel falls onto the first screening plate 31 in the screening box 3 for the first screening process, and those that do not meet the specifications are discharged through the first guide port 33, and those that meet the aperture specifications fall onto the second screening plate 32 for secondary screening, and those that do not meet the specifications are discharged through the second guide port 34, and those that meet the aperture specifications fall into the collection drawer 72 at the bottom of the collection box 7 through the guide trough 71. The operator can take out the collection drawer 72 through the handle 73 to clean the gravel inside. The gravel passes through the separation box 1 and the screening box 3, and finally falls into the collection box 7. After being screened layer by layer, the screening efficiency and effect of the gravel screening device are improved.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gravel screening device, characterized in that: The invention comprises a separation box (1), wherein a feed port (11) is provided on the top of the separation box (1), a first separation roller (12) and a second separation roller (13) are rotatably connected inside the separation box (1), the first separation roller (12) and the second separation roller (13) are symmetrically arranged in the separation box (1), a first driving component (2) for driving the first separation roller (12) and the second separation roller (13) to rotate is provided on the outer wall of the separation box (1), and the bottom of the separation box (1) is connected to A screening box (3), wherein a first screening plate (31) and a second screening plate (32) are sequentially arranged in rotation in the screening box (3), the first screening plate (31) and the second screening plate (32) are both arranged at an angle, the first screening plate (31) and the second screening plate (32) are both provided with screening holes, the screening holes on the first screening plate (31) are larger than those on the second screening plate (32), and the screening box (3) is close to the rotation axis of the first screening plate (31) and the second screening plate (32). A first material guide port (33) and a second material guide port (34) are sequentially provided on one side; a first guide plate (35) is provided on the side of the first screening plate (31) away from the rotating shaft; a second guide plate (36) is provided on the side of the second screening plate (32) away from the rotating shaft; a first sliding groove (37) and a second sliding groove (38) for sliding cooperation between the first guide plate (35) and the second guide plate (36) are provided on the side wall of the screening box (3); the first guide plate (35) and the second guide plate (36) are A first return spring (39) and a second return spring (4) are fixedly connected in sequence below the guide plate (36); a first cam (41) and a second cam (42) are rotatably provided on the outer wall of the screening box (3) close to the first guide plate (35); a second drive assembly (5) and a third drive assembly (6) for driving the first cam (41) and the second cam (42) to rotate are provided in sequence on the outer wall of the screening box (3); and a collecting box (7) is connected to the bottom of the screening box (3).

2. A gravel screening device according to claim 1, characterized in that: The first driving assembly (2) comprises a driving gear (21) sleeved on the rotating shaft of the first separation roller (12), a driven gear (22) sleeved on the rotating shaft of the second separation roller (13), and a driving motor (23) arranged on the rotating shaft of the first separation roller (12); the driving gear (21) and the driven gear (22) are meshed with each other; a fixed box body (24) is provided on the outer wall of the separation box (1); and the driving motor (23) is fixedly connected to the inner wall of the fixed box body (24).

3. The gravel screening device according to claim 1, characterized in that: The second driving assembly (5) includes a pulley 1 (51) sleeved on the rotating shaft of the second separating roller (13), a pulley 2 (52) sleeved on the rotating shaft of the first cam (41), and a belt 1 (53) sleeved on the outer circumference of the pulley 1 (51) and the pulley 2 (52).

4. The gravel screening device according to claim 1, characterized in that: The third driving assembly (6) includes a pulley three (61) sleeved on the rotating shaft of the first cam (41), a pulley four (62) sleeved on the rotating shaft of the second cam (42), and a belt two (63) sleeved on the outer circumferences of the pulley three (61) and the pulley four (62).

5. The gravel screening device according to claim 1, characterized in that: Torsion springs (43) are provided on the rotation axes of the first screening plate (31) and the second screening plate (32) near the inner wall of the screening box (3), and accommodating grooves for accommodating the torsion springs (43) are provided on the first screening plate (31) and the second screening plate (32).

6. The gravel screening device according to claim 1, characterized in that: A guide groove (71) is provided in the collection box (7), and four sides of the guide groove (71) are all provided with inclined surfaces.

7. The gravel screening device according to claim 1, characterized in that: A collection drawer (72) is slidably provided in the collection box (7).

8. The gravel screening device according to claim 7, characterized in that: A handle (73) is provided on the outside of the collection drawer (72).

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