Environment-friendly sand and gravel screening device

Abstract

The utility model provides a kind of environmental protection type sandstone screening device, it is related to sandstone processing technical field, including frame, frame is provided with sieve box, the lower part of sieve box is provided with sieve hole, the lower part of sieve hole is provided with discharge chute on frame, the four corners of sieve box are equipped with first limit piece, transverse limit slot is opened in first limit piece, second limit piece is installed on the side of first limit piece on frame, vertical limit slot is opened in second limit piece, both ends of sieve box are equipped with mounting piece, the inner side of mounting piece is equipped with gyro wheel, column is installed on frame, rotatingly installed rotating rod on column, the middle part of rotating rod is equipped with cam. In the utility model, by cam and gyro wheel down, one end of sieve box is upwards movable, and synchronous vibration, two ends of sieve box are alternately movable and vibrate, part of smaller sandstone can be screened from sieve hole, when sieve box moves upwards, stone inside sieve hole can be thrown out by inertial motion, improve the overall practicability.

Description

Technical Field

[0001] This utility model belongs to the field of sand and gravel treatment technology, and more specifically, it relates to an environmentally friendly sand and gravel screening device. Background Technology

[0002] Sand and gravel refer to a loose mixture of sand grains and gravel. Geologically, mineral or rock particles with a diameter of 0.074–2 mm are called sand, while those larger than 2 mm are called gravel or breccia. The difference between the two lies in the degree to which they are rounded. For details, see the entries for conglomerate and sandstone. If the gravel in sand and gravel is mostly gravel, it is called sandy gravel. In everyday life, some people also refer to sandstone as sand and gravel.

[0003] Based on the above, the inventors have discovered the following problems: Most of the sand and gravel screening devices currently in use use vibrating screens for vibration screening. In such screening devices, the screening plate is set at an inclination, and the sand and gravel are gradually screened out by gravity and vibration. However, in actual use, some sand and gravel may be small in size and the size of the screen holes, and the sand and gravel are easy to block in the screen holes. Continuous vibration will only make the sand and gravel more firmly inside the screen holes, which is inconvenient for subsequent processing and reduces the screening effect.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings to provide an environmentally friendly sand and gravel screening device, in order to achieve a more practical value. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an environmentally friendly sand and gravel screening device. This addresses the issue that in current screening devices, some sand and gravel are of similar size to the screen holes, causing them to easily become clogged. Continuous vibration only makes the sand and gravel more firmly embedded in the screen holes, hindering subsequent processing and reducing the screening effect.

[0006] The purpose and effectiveness of this environmentally friendly sand and gravel screening device are achieved through the following specific technical means:

[0007] An environmentally friendly sand and gravel screening device includes a frame, a screen box mounted on the frame, a screen hole at the bottom of the screen box, a feeding chute at the bottom of the screen hole on the frame, first limiting members at the four corners of the screen box with transverse limiting grooves, second limiting members on the side of the first limiting members on the frame with vertical limiting grooves, mounting members at both ends of the screen box with rollers mounted on the inner side of the mounting members, a column mounted on the frame, a rotating rod rotatably mounted on the column, and a cam mounted in the middle of the rotating rod.

[0008] Furthermore, there are two cams and rollers, and the positions of the two cams and rollers correspond to each other. The rotation of the cam can drive the roller to move, and the two cams are arranged in the same direction.

[0009] Furthermore, a drive motor is installed at one end of the rotating rod, the output end of the drive motor is connected to the rotating rod, and the drive motor is connected to the column.

[0010] Furthermore, the vertical limiting groove and the horizontal limiting groove are provided with crossbars inside, and upper connecting blocks are installed at both ends of the crossbars. A lower connecting block is installed on the frame below the upper connecting block, and the upper connecting block and the lower connecting block are connected by a spring.

[0011] Furthermore, a first movable wheel and a second movable wheel are installed at both ends of the crossbar. The first movable wheel is located inside the transverse limiting groove, and the second movable wheel is located inside the vertical limiting groove.

[0012] Furthermore, a protective cover is installed on the upper part of the screen box, and an opening is provided in the middle of one side of the screen box, with a feed tray located at the opening.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this invention, the horizontal bar moves downward, causing the upper connecting block to move downward synchronously. At this time, the spring contracts. When the cam passes the roller, the force of the spring causes the horizontal bar to return to its original position. The horizontal bar, through the first limiting member, causes one end of the screen box to move in an arc shape and vibrate synchronously. At this time, the cam and another roller at the other end move downward, and the other end of the screen box moves upward and vibrates synchronously. The two ends of the screen box move and vibrate alternately, which can screen out some smaller sand and gravel from the screen holes. In this way, when the screen box moves upward, the stones inside the screen holes can be thrown out by inertial motion, improving the overall practicality.

[0015] In this invention, a drive motor drives a rotating rod to rotate. When the rotating rod rotates, it drives the cam to rotate synchronously. At this time, the two cams rotate in the same direction. When one of the cams rotates, it gradually contacts its corresponding roller. The protruding part of the cam presses the roller down. At this time, one end of the screen box moves down. When the cam passes the roller, the crossbar returns to its original position by the force of the spring, which can achieve the vibration effect and facilitate screening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall assembly of an environmentally friendly sand and gravel screening device according to this utility model.

[0017] Figure 2 This is a schematic diagram of the inner side of the screen box of an environmentally friendly sand and gravel screening device according to this utility model.

[0018] Figure 3 This is a schematic diagram of the frame assembly of an environmentally friendly sand and gravel screening device according to this utility model.

[0019] Figure 4 This is an enlarged schematic diagram of part A of an environmentally friendly sand and gravel screening device according to this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Frame; 2. Column; 3. Rotating rod; 4. Cam; 5. Screen box; 6. Screen hole; 7. Mounting component; 8. Roller; 9. First limiting component; 10. Horizontal limiting groove; 11. Crossbar; 12. First movable wheel; 13. Second limiting component; 14. Vertical limiting groove; 15. Second movable wheel; 16. Upper connecting block; 17. Lower connecting block; 18. Spring; 19. Drive motor; 20. Protective cover; 21. Feeding tray; 22. Discharge chute. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To be continued Figure 4 As shown:

[0027] This utility model provides an environmentally friendly sand and gravel screening device, including a frame 1, a screen box 5 mounted on the frame 1, a screen hole 6 at the bottom of the screen box 5, a feeding chute 22 at the bottom of the screen hole 6 on the frame 1, first limiting members 9 installed at the four corners of the screen box 5, each with a horizontal limiting groove 10, and second limiting members 13 installed on the side of the first limiting members 9 on the frame 1, each with a vertical limiting groove 14, mounting members 7 installed at both ends of the screen box 5, rollers 8 installed on the inner side of the mounting members 7, a column 2 mounted on the frame 1, a rotating rod 3 rotatably mounted on the column 2, a cam 4 installed in the middle of the rotating rod 3, a protective cover 20 installed on the top of the screen box 5, and an opening in the middle of one side of the screen box 5. A feed tray 21 is provided at the opening. There are two cams 4 and two rollers 8. The positions of the two cams 4 and rollers 8 are corresponding to each other. The rotation of the cam 4 can drive the roller 8 to move. The two cams 4 are arranged in the same direction. A drive motor 19 is installed at one end of the rotating rod 3. The output end of the drive motor 19 is connected to the rotating rod 3. The drive motor 19 is connected to the column 2. When the rotating rod 3 rotates, it can drive the cams 4 to rotate synchronously. At this time, the two cams 4 rotate in the same direction. When one of the cams 4 rotates, it gradually contacts its corresponding roller 8. The protruding part of the cam 4 presses down the roller 8. At this time, one end of the screen box 5 moves down. When the cam 4 passes the roller 8, the crossbar 11 returns to its original position by the force of the spring 18, which can achieve the vibration effect and facilitate screening.

[0028] The vertical limiting groove 14 and the horizontal limiting groove 10 are equipped with a crossbar 11. The two ends of the crossbar 11 are equipped with upper connecting blocks 16. The frame 1 is equipped with a lower connecting block 17 located below the upper connecting block 16. The upper connecting block 16 and the lower connecting block 17 are connected by a spring 18. The two ends of the crossbar 11 are equipped with a first movable wheel 12 and a second movable wheel 15. The first movable wheel 12 is located inside the horizontal limiting groove 10, and the second movable wheel 15 is located inside the vertical limiting groove 14. The crossbar 11 and the first movable wheel 12 are pressed down by the first limiting member 9 at one end of the screen box 5, so that the first movable wheel 12 moves inside the horizontal limiting groove 10 and the second movable wheel 15 moves inside the vertical limiting groove 14. When the crossbar 11 moves down, it drives the upper connecting block 16 to move down synchronously. At this time, the spring 18 contracts. When the cam 4 passes the roller 8, the crossbar 11 returns to its original position by the force of the spring 18, thereby achieving the purpose of vibration screening.

[0029] The specific usage and function of this embodiment are as follows:

[0030] In this invention, the collecting trolley is first placed at the lower part of the feeding trough 22, and the sand and gravel are fed into the screen box 5 through the feeding disc 21. Then, the drive motor 19 is started, which drives the rotating rod 3 to rotate. When the rotating rod 3 rotates, it drives the cam 4 to rotate synchronously. At this time, the two cams 4 rotate in the same direction. When one of the cams 4 rotates, it gradually contacts its corresponding roller 8. The protruding part of the cam 4 presses down on the roller 8. At this time, one end of the screen box 5 moves down, and the first limiting member 9 at one end presses down the crossbar 11 and the first movable wheel 12, causing the first movable wheel 12 to move inside the transverse limiting groove 10. The second movable wheel 15 moves inside the vertical limiting groove 14. When the crossbar 11 moves down, it drives the upper connecting block 16 to move down synchronously. At this time, the spring 18 contracts. When the cam 4 passes the roller 8, the force of the spring 18 causes the crossbar 11 to return to its original position. The crossbar 11 drives one end of the screen box 5 to move upward through the first limiting member 9 and vibrate synchronously. At this time, the cam 4 and the other roller 8 at the other end move down, and the other end of the screen box 5 moves in an arc shape and vibrates synchronously. The two ends of the screen box 5 move and vibrate alternately, which can screen out some smaller sand and gravel from the screen hole 6 and enter the collection vehicle through the discharge chute 22.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An environmentally friendly sand and gravel screening device, comprising a frame (1), characterized in that: A screen box (5) is provided on the frame (1). A screen hole (6) is provided at the lower part of the screen box (5). A feeding trough (22) is provided on the frame (1) at the lower part of the screen hole (6). A first limiting member (9) is installed at the four corners of the screen box (5). A horizontal limiting groove (10) is provided on the first limiting member (9). A second limiting member (13) is installed on the side of the first limiting member (9) on the frame (1). A vertical limiting groove (14) is provided on the second limiting member (13). Mounting members (7) are installed at both ends of the screen box (5). A roller (8) is installed on the inner side of the mounting member (7). A column (2) is installed on the frame (1). A rotating rod (3) is rotatably installed on the column (2). A cam (4) is installed in the middle of the rotating rod (3).

2. The environmentally friendly sand and gravel screening device as described in claim 1, characterized in that: There are two cams (4) and rollers (8). The positions of the two cams (4) and rollers (8) correspond to each other. The rotation of the cam (4) can drive the roller (8) to move. The two cams (4) are arranged in the same direction.

3. The environmentally friendly sand and gravel screening device as described in claim 1, characterized in that: One end of the rotating rod (3) is equipped with a drive motor (19), the output end of the drive motor (19) is connected to the rotating rod (3) in a transmission connection, and the drive motor (19) is connected to the column (2).

4. The environmentally friendly sand and gravel screening device as described in claim 1, characterized in that: The vertical limiting groove (14) and the horizontal limiting groove (10) are provided with a crossbar (11). The two ends of the crossbar (11) are equipped with upper connecting blocks (16). The frame (1) is equipped with a lower connecting block (17) located below the upper connecting block (16). The upper connecting block (16) and the lower connecting block (17) are connected by a spring (18).

5. The environmentally friendly sand and gravel screening device as described in claim 4, characterized in that: The crossbar (11) is equipped with a first movable wheel (12) and a second movable wheel (15) at both ends. The first movable wheel (12) is located inside the transverse limiting groove (10), and the second movable wheel (15) is located inside the vertical limiting groove (14).

6. The environmentally friendly sand and gravel screening device as described in claim 1, characterized in that: The upper part of the screen box (5) is equipped with a protective cover (20), and an opening is provided in the middle of one side of the screen box (5), with a feed plate (21) located at the opening.

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