Screening device for asphalt concrete production

Abstract

The utility model relates to the technical field of asphalt concrete, in particular to a screening device for asphalt concrete production, which comprises a working box, a containing groove is arranged in the middle of the front end of the working box, and the left end and the right end of the working box are respectively and fixedly connected with a group of limiting plates. Positioning rods are movably connected to the front portions of the upper portions of the ends, away from each other, of the two limiting plates in a penetrating mode, a screening structure is jointly clamped between the two positioning rods, an operation disc is fixedly connected to the upper portion of the front end of the working box, an averaging structure is fixedly connected to the upper end of the working box, and a feeding port is fixedly connected to the upper end of the averaging structure; the middle of the lower end of the working box is fixedly connected with a discharging port. According to the screening device for asphalt concrete production, through the arranged screening structure, asphalt raw materials can be screened, the raw materials can be taken out conveniently, the screening plate can be cleaned conveniently, blocking is prevented, the raw materials can be conveyed to the two ends, and abrasion of the screening plate is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt concrete, in particular to a screening device for asphalt concrete production. Background Art

[0002] Asphalt concrete is a mixture of crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., which are artificially selected in a certain proportion and mixed under strictly controlled conditions. In order to facilitate the paving of asphalt concrete when it is used, the raw materials will be screened to prevent the diameter difference between the particles from being too large. There are at least the following disadvantages in the use of the existing screening structure: 1. The screening plate of the existing screening structure is displaced inside the working box, which is not convenient to take out for cleaning, and may cause blockage after using for a period of time; 2. When the existing screening device is in use, the middle of the screening plate wears more than the two sides, which will accelerate the damage of the screening plate. Therefore, we have introduced a new screening device for asphalt concrete production. Utility Model Content

[0003] The main purpose of the utility model is to provide a screening device for asphalt concrete production, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A screening device for asphalt concrete production comprises a working box, a receiving groove is opened in the middle of the front end of the working box, a group of limit plates are fixedly connected to the left and right ends of the working box, and positioning rods are movably connected to the front of the upper end away from the two groups of limit plates, and a screening structure is commonly clamped between the two positioning rods. An operating panel is fixedly connected to the upper part of the front end of the working box, an averaging structure is fixedly connected to the upper end of the working box, a feed port is fixedly connected to the upper end of the averaging structure, and a discharge port is fixedly connected to the middle of the lower end of the working box. The screening structure is located inside the receiving groove.

[0006] Preferably, the screening structure includes a circular frame, and the upper left end, lower left end, upper right end and lower right end of the circular frame are all provided with sliding grooves, the front of the upper left end and the front of the upper right end of the circular frame are both provided with positioning holes, the lower left end and the lower right end of the circular frame are both movably connected to rollers through rollers, the inner wall of the circular frame is fixedly connected to a square frame, the upper front end, upper left end and upper right end of the square frame are fixedly connected to several groups of connecting springs at equal distances, the upper ends of several groups of connecting springs are commonly fixedly connected to a screening plate, the rear left end and the rear right end of the lower end of the screening plate are fixedly connected to a vibration motor, and the upper rear end of the square frame is fixedly connected to a rectangular plate.

[0007] Preferably, the circular frame is located inside the accommodating groove, the positioning rod is movably engaged with the positioning hole, and the limiting plate is movably engaged with the sliding groove.

[0008] Preferably, the screening plate is located inside the circular frame, the vibration motor does not contact the square frame, and the roller contacts the inner wall of the accommodating groove but is not fixed.

[0009] Preferably, the averaging structure includes a rectangular frame, a rotating rod is movably connected inside the rectangular frame, a rotating plate is fixedly connected to the rotating rod, circular plates are fixedly connected to the front and rear ends of the rotating rod, the rear end of the rotating rod is fixedly connected to gear No. 1, the lower part of the rear end of the rectangular frame is fixedly connected to a drive motor, and the output end of the drive motor is fixedly connected to gear No. 2.

[0010] Preferably, the rectangular frame is fixedly connected to the working box and the feed port, the No. 1 gear is engaged with the No. 2 gear, and the rotating plate is located inside the rectangular frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. By setting up the screening structure, the screening plate on the screening structure can screen the raw materials under the drive of the connecting spring and the vibration motor, and the roller at the bottom can facilitate the movable circular frame to reduce friction. The positioning rod on the limit plate is connected with the positioning hole to facilitate the fixing of the screening structure. The screening structure can be moved by pulling it out, and the screening plate can be taken out for cleaning;

[0013] 2. By setting up an averaging structure, the No. 1 gear on the rotating rod inside the averaging structure engages with the No. 2 gear on the drive motor, which can mobilize the rotating rod to rotate. The rotating plate on the rotating rod rotates together, and the passing raw materials can be transported to both ends. When the rotating plate is erected, the raw materials can move closer to the middle, which can make the raw materials evenly contact with the screening plate, reducing the wear of the screening plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a screening device for asphalt concrete production according to the present invention;

[0015] Figure 2 This is a schematic diagram of the screening structure of a screening device for asphalt concrete production according to the present invention;

[0016] Figure 3 This is a schematic diagram of the screening structure of a screening device for asphalt concrete production according to the present invention;

[0017] Figure 4 This is a schematic diagram of the overall structure of the average structure of a screening device for asphalt concrete production in the utility model.

[0018] In the figure: 1. Working box; 2. Receiving groove; 3. Limiting plate; 4. Positioning rod; 5. Screening structure; 6. Operating panel; 7. Averaging structure; 8. Feed port; 9. Discharge port; 10. Reciprocating frame; 11. Slide groove; 12. Positioning hole; 13. Roller; 14. Square frame; 15. Connecting spring; 16. Screening plate; 17. Vibrating motor; 18. Rectangular plate; 19. Rectangular frame; 20. Rotating rod; 21. Rotating plate; 22. Circular plate; 23. Gear No. 1; 24. Driving motor; 25. Gear No. 2. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A screening device for asphalt concrete production includes a working box 1, a receiving groove 2 is opened in the middle of the front end of the working box 1, a group of limit plates 3 are fixedly connected to the left and right ends of the working box 1, and positioning rods 4 are movably connected to the front of the upper end away from the two groups of limit plates 3. A screening structure 5 is commonly clamped between the two positioning rods 4, an operating panel 6 is fixedly connected to the upper front end of the working box 1, an averaging structure 7 is fixedly connected to the upper end of the working box 1, a feed port 8 is fixedly connected to the upper end of the averaging structure 7, and a discharge port 9 is fixedly connected to the middle of the lower end of the working box 1. The screening structure 5 is located inside the receiving groove 2.

[0024] In this embodiment, the screening structure 5 includes a circular frame 10, and the upper left end, lower left end, upper right end and lower right end of the circular frame 10 are all provided with a slide groove 11, and the upper front of the left end and the upper front of the right end of the circular frame 10 are both provided with a positioning hole 12. The lower left end and the lower right end of the circular frame 10 are both movably connected to rollers 13 through rollers. The inner wall of the circular frame 10 is fixedly connected to a square frame 14, and the upper front end, upper left end and upper right end of the square frame 14 are fixedly connected to a plurality of groups of connecting springs 15 at equal distances. The upper ends of the plurality of groups of connecting springs 15 are commonly fixedly connected to a screening plate 16, and the rear left end and the lower right end of the screening plate 16 are fixedly connected to the upper front end, the upper left end and the upper right end of the screening plate 16. The rear of the frame is fixedly connected to a vibration motor 17, the upper rear end of the square frame 14 is fixedly connected to a rectangular plate 18, the circular frame 10 is located inside the accommodating groove 2, the positioning rod 4 is movably engaged with the positioning hole 12, the limit plate 3 is movably engaged with the slide groove 11, the screening plate 16 is located inside the circular frame 10, the vibration motor 17 does not contact the square frame 14, the roller 13 is in contact with the inner wall of the accommodating groove 2 but is not fixed, the screening plate 16 can be driven to move by connecting the spring 15 and the vibration motor 17 to screen the raw materials on the upper part, the rectangular plate 18 can prevent the raw materials from falling from the rear gap, and the roller 13 can facilitate the movement of the circular frame 10.

[0025] In this embodiment, the averaging structure 7 includes a rectangular frame 19, and a rotating rod 20 is inserted and movably connected inside the rectangular frame 19. A rotating plate 21 is inserted and fixedly connected on the rotating rod 20. The front and rear ends of the rotating rod 20 are both inserted and fixedly connected with a circular plate 22. The rear end of the rotating rod 20 is fixedly connected to a No. 1 gear 23. The lower part of the rear end of the rectangular frame 19 is fixedly connected to a drive motor 24, and the output end of the drive motor 24 is fixedly connected to a No. 2 gear 25. The rectangular frame 19 is fixedly connected to the working box 1 and the feed port 8. The No. 1 gear 23 is engaged with the No. 2 gear 25. The rotating plate 21 is located inside the rectangular frame 19. The No. 1 gear 23 is driven to engage and rotate by the No. 2 gear 25, so that the rotating plate 21 can rotate, and the upper raw materials are transported to both ends. The circular plate 22 can now rotate the rod 20.

[0026] It should be noted that the present invention is a screening device for asphalt concrete production. During use, the raw materials are first fed from the feed port 8 to the inside of the averaging structure 7. The driving motor 24 at the rear end of the rectangular frame 19 is driven by the operating panel 6. The second gear 25 at the output end of the driving motor 24 is engaged with the first gear 23 at the rear end of the rotating rod 20, which can drive the rotating rod 20 to rotate. A rotating plate 21 is fixedly connected to the rotating rod 20. The rotating plate 21 rotates together with the raw materials, which can transport the raw materials at the upper part to both ends, thereby preventing the middle part of the screening plate 16 from being seriously worn, and the raw materials from falling on the lower part after reaching the lower part. The upper end of the screening plate 16 and the lower end of the screening plate 16 are connected to the lower square frame 14 through the connecting spring 15. At the same time, the vibration motor 17 fixedly connected to the lower end of the screening plate 16 drives the screening plate 16 to move to screen the raw materials. After a period of use, the positioning rods 4 on the limit plates 3 at both ends of the working box 1 are pulled to both ends and pulled out from the positioning holes 12 on the circular frame 10 to move the screening structure 5. The roller 13 at the lower end of the circular frame 10 can facilitate the movement of the circular frame 10 and reduce the friction generated during movement. After the screening structure 5 is pulled out, the upper screening plate 16 is cleaned to prevent blockage.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for asphalt concrete production, comprising a working box (1), characterized in that: A receiving groove (2) is provided in the middle of the front end of the working box (1), and a set of limiting plates (3) are fixedly connected to the left and right ends of the working box (1), and positioning rods (4) are inserted and movably connected to the front of the upper ends of the two sets of limiting plates (3) away from each other, and a screening structure (5) is commonly clamped between the two positioning rods (4). An operating panel (6) is fixedly connected to the upper part of the front end of the working box (1), an averaging structure (7) is fixedly connected to the upper end of the working box (1), and a feed port (8) is fixedly connected to the upper end of the averaging structure (7). A discharge port (9) is fixedly connected to the middle of the lower end of the working box (1), and the screening structure (5) is located inside the receiving groove (2).

2. A screening device for asphalt concrete production according to claim 1, characterized in that: The screening structure (5) comprises a circular frame (10), wherein the upper left end, the lower left end, the upper right end and the lower right end of the circular frame (10) are all provided with a slide groove (11), the front of the upper left end and the front of the upper right end of the circular frame (10) are both provided with a positioning hole (12), the lower left end and the lower right end of the circular frame (10) are both movably connected to a roller (13) through a roller, the inner wall of the circular frame (10) is fixedly connected with a square frame (14), the upper front end, the upper left end and the upper right end of the square frame (14) are fixedly connected with a plurality of groups of connecting springs (15) at equal distances, the upper ends of the plurality of groups of connecting springs (15) are commonly fixedly connected with a screening plate (16), the rear left end and the rear right end of the lower end of the screening plate (16) are both fixedly connected with a vibration motor (17), and the upper rear end of the square frame (14) is fixedly connected with a rectangular plate (18).

3. A screening device for asphalt concrete production according to claim 2, characterized in that: The circular frame (10) is located inside the accommodating groove (2), the positioning rod (4) is movably engaged with the positioning hole (12), and the limiting plate (3) is movably engaged with the sliding groove (11).

4. A screening device for asphalt concrete production according to claim 2, characterized in that: The screening plate (16) is located inside the circular frame (10), the vibration motor (17) does not contact the square frame (14), and the roller (13) contacts the inner wall of the accommodating groove (2) but is not fixed.

5. The screening device for asphalt concrete production according to claim 1, characterized in that: The averaging structure (7) comprises a rectangular frame (19), a rotating rod (20) is inserted and movably connected inside the rectangular frame (19), a rotating plate (21) is inserted and fixedly connected on the rotating rod (20), a circular plate (22) is inserted and fixedly connected at the front and rear ends of the rotating rod (20), a first gear (23) is fixedly connected at the rear end of the rotating rod (20), a driving motor (24) is fixedly connected at the lower part of the rear end of the rectangular frame (19), and a second gear (25) is fixedly connected at the output end of the driving motor (24).

6. A screening device for asphalt concrete production according to claim 5, characterized in that: The rectangular frame (19) is fixedly connected to the working box (1) and the feed port (8), the first gear (23) is meshed with the second gear (25), and the rotating plate (21) is located inside the rectangular frame (19).

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