Asphalt mixture vibration screening device

Abstract

The utility model discloses an asphalt mixture vibration screening device which comprises a screening box, a plurality of vertical upward camshafts are longitudinally arranged in the middle of the screening box, the bottoms of the camshafts are connected with a driving mechanism, shaft body cams of the camshafts make contact with the head ends of screening boxes on the two sides, and the screening boxes are transversely and slidably connected with sealing plates and partition plates of the screening box. The tail ends of the screen boxes are in contact with spring seats on side plates of the screen boxes, and a collecting box is arranged below the bottommost screen box; the driving mechanism of the device can drive the multiple cam shafts to rotate at the same time, through cooperation between the rotating cams and the spring seats, all the layers of screening boxes are driven to screen materials in a reciprocating mode, so that mixed materials are screened step by step, the device is provided with the multiple screening channels, the independent screening requirements of different asphalt materials can be met, and the device has the advantages of being fast, efficient and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically to a vibrating screening device for asphalt mixture. Background Technology

[0002] Asphalt mixtures are composite materials, mainly composed of asphalt, coarse aggregate, fine aggregate, and mineral powder, with some also including polymers and wood cellulose. There are two most commonly used types of asphalt mixtures in engineering: one is asphalt concrete mixture, which is made by mixing and compacting mineral aggregates with asphalt binder in appropriate proportions and conforming to specified gradations, resulting in a residual void ratio of less than 10%, and is usually simply referred to as asphalt concrete; the other is asphalt macadam mixture, which is made by mixing asphalt with appropriate proportions of coarse aggregate, fine aggregate, and fillers in appropriate proportions, resulting in a residual void ratio of more than 10%, and is called asphalt macadam mixture. Both types of asphalt mixtures require screening of various raw materials during preparation to select materials with suitable particle sizes for mixing. Traditional screening devices typically can only screen one type of raw material at a time, greatly affecting production efficiency. Using multiple devices for simultaneous screening increases preparation costs. Therefore, a new type of screening device is needed to solve these problems. Utility Model Content

[0003] To solve the above problems, this utility model proposes an asphalt mixture vibrating screening device, including a screen box, several vertically upward camshafts arranged longitudinally in the middle of the screen box, a drive mechanism connected to the bottom of the camshafts, the cams of the camshaft shafts contacting the front ends of the screen boxes on both sides, the screen boxes slidingly connected to the sealing plates and partitions of the screen box in the lateral direction, the rear end of the screen box contacting the spring seats on the side plates of the screen box, and a collection box provided below the bottom screen box.

[0004] Furthermore, the drive mechanism includes a drive shaft, which is longitudinally rotatably connected to the transmission chamber at the bottom of the screen box. The drive shaft shaft gear meshes with the bottom gear of the camshaft, and the camshaft shaft is rotatably connected to the top surface of the transmission chamber. The drive shaft end is connected to a drive motor, which passes through an opening in a side sealing plate.

[0005] Furthermore, the sieve box has a bucket-shaped structure with a top inlet larger than a bottom outlet. A sieve screen is provided at the outlet, and the sieve mesh size decreases layer by layer from top to bottom. Slider blocks are provided on both sides of the sieve box, and the sliders are slidably connected to the horizontal grooves opened on the sealing plate and partition plate.

[0006] Furthermore, several pairs of ear seats are provided on both sides of the sealing plate. The ear seats are connected to the threaded seats on the side plate of the screen box by bolts. A handle is provided on the outer side of the sealing plate.

[0007] Furthermore, the top surface of the side plate of the screen box is connected to the side guide plate by bolts. The side guide plate is located directly above the top spring seat. The top surface of the two sealing plates is connected to the two ends of the middle guide plate by bolts. The bottom surface of the middle guide plate is rotatably connected to the top of each camshaft. The edges of each guide plate are bent toward the inlet of the screen box. Rollers are provided on both sides of the bottom of the screen box.

[0008] The beneficial effects of this utility model are as follows: The drive mechanism of this utility model can drive multiple camshafts to rotate simultaneously through one motor. Through the cooperation between the rotating cam and the spring seat, the screen boxes of each layer are driven to screen the material back and forth, thereby screening the mixture step by step. The device is equipped with multiple screening channels, which can meet the independent screening needs of different asphalt materials. After screening, the sealing plate can be removed for quick unloading. It has the characteristics of being convenient, efficient and low cost. Attached Figure Description

[0009] Figure 1 This is a front view structural diagram of the present utility model;

[0010] Figure 2 This is a top view of the structure of this utility model;

[0011] Figure 3 This is a top view of the structure of this utility model.

[0012] The reference numerals in the attached drawings are explained as follows: 1. Screen box; 101. Sealing plate; 102. Partition plate; 103. Transmission chamber; 104. Cross groove; 105. Ear seat; 106. Threaded seat; 107. Handle; 2. Camshaft; 201. Cam; 3. Screen box; 301. Screen mesh; 302. Slider; 4. Spring seat; 5. Collection box; 6. Drive shaft; 7. Drive motor; 8. Side guide plate; 9. Middle guide plate; 10. Roller. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are 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 on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] like Figures 1 to 3 As shown, an asphalt mixture vibrating screen includes a screen box 1, with several vertically upward camshafts 2 arranged longitudinally in the middle of the screen box 1. The bottom of the camshafts 2 is connected to a drive mechanism, which includes a drive shaft 6. The drive shaft 6 is rotatably connected to the transmission chamber 103 at the bottom of the screen box 1. The shaft gear of the drive shaft 6 meshes with the bottom gear of the camshaft 2. The shaft of the camshaft 2 is rotatably connected to the top surface of the transmission chamber 103. The end of the drive shaft 6 is connected to a drive motor 7, which passes through an opening in a sealing plate 101 on one side.

[0017] In this embodiment, the cam 201 of the camshaft 2 contacts the front ends of the two screen boxes 3. The screen box 3 is a bucket-shaped structure with a top inlet larger than the bottom outlet. A screen 301 is provided at the outlet, and the screen holes of the screen 301 gradually decrease from top to bottom. Slider blocks 302 are provided on both sides of the screen box 3. The sliders 302 are slidably connected to the transverse grooves 104 opened on the sealing plate 101 and the partition plate 102. The rear end of the screen box 3 contacts the spring seat 4 on the side plate of the screen box 1. A collection box 5 is provided below the bottom screen box 3.

[0018] In this embodiment, the sealing plate 101 has several pairs of lugs 105 on both sides. The lugs 105 are connected to the threaded seats 106 on the side plate of the screen box 1 by bolts. The outer side of the sealing plate 101 is provided with a handle 107. The top surface of the side plate of the screen box 1 is connected to the side guide plate 8 by bolts. The side guide plate 8 is located directly above the top spring seat 4. The middle of the top surface of the two sealing plates 101 is connected to both ends of the middle guide plate 9 by bolts. The bottom surface of the middle guide plate 9 is rotatably connected to the top of each camshaft 2. The edges of each guide plate are bent toward the inlet of the screen box 3. Rollers 10 are provided on both sides of the bottom of the screen box 1.

[0019] The working principle of this utility model is as follows:

[0020] Different types of asphalt mixture are placed into the four sieve boxes 3 on the top layer of the device. The drive motor 7 is started to drive the drive shaft 6 to rotate. The drive shaft 6 drives each cam shaft 2 to rotate through gears. The high-speed rotating cam 201 repeatedly pushes the sieve box 3 to squeeze the spring seat 4 and reset it. During the reciprocating sieving process, the spring seat 4 causes the finer particles of raw material in the box to fall into the lower sieve box 3. The finest mixture is graded layer by layer and falls into the bottom collection box 5. After sieving, the drive motor 7 is turned off, the bolts are loosened, and the sealing plate 101 is removed by the handle 107. The mixture of each particle size is then taken out of the box in sequence.

[0021] The drive mechanism of this utility model can simultaneously drive multiple camshafts 2 to rotate. Through the cooperation between the rotating cam 201 and the spring seat 4, the screen boxes 3 of each layer are driven to screen the material back and forth, thereby screening the mixture step by step. The device is equipped with multiple screening channels, which can meet the independent screening needs of different asphalt materials. It has the characteristics of being fast, efficient and low cost.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A vibrating sieve device for asphalt mixtures, comprising a sieve box (1), characterized in that: The screen box (1) is longitudinally arranged with several vertical camshafts (2) in the middle, the bottom of the camshaft (2) is connected with a driving mechanism, the shaft body cam (201) of the camshaft (2) is in contact with the first end of the two side screen boxes (3), the screen box (3) is transversely slidably connected with the sealing plate (101) and the partition plate (102) of the screen box (1), the tail end of the screen box (3) is in contact with the spring seat (4) on the side plate of the screen box (1), and the bottom of the bottommost screen box (3) is provided with a collecting box (5).

2. An asphalt mixture vibration screening device according to claim 1, characterized in that: The driving mechanism comprises a driving shaft (6) which is longitudinally rotatably connected in the bottom transmission chamber (103) of the screen box (1), the shaft body gear of the driving shaft (6) is engaged with the bottom gear of the camshaft (2), the shaft body of the camshaft (2) is rotatably connected with the top surface of the transmission chamber (103), the end of the driving shaft (6) is connected with a driving motor (7), and the driving motor (7) is penetrated out of the hole in one side sealing plate (101).

3. The vibrating sieve device for asphalt mixture according to claim 1, characterized in that: The screen box (3) is a bucket-shaped structure with a top inlet larger than a bottom outlet, an outlet is provided with a screen mesh (301), the screen holes of the screen mesh (301) are gradually reduced from top to bottom, the two sides of the screen box (3) are provided with sliding blocks (302), and the sliding blocks (302) are slidably connected with the transverse grooves (104) formed on the sealing plate (101) and the partition plate (102).

4. The vibrating sieve device for asphalt mixture according to claim 1, characterized in that: The two side edges of the sealing plate (101) are provided with a plurality of pairs of ear seats (105), the ear seats (105) are connected with the threaded seats (106) on the side plates of the screen box (1) through bolts, and the outer side surface of the sealing plate (101) is provided with a handle (107).

5. The vibrating sieve device for asphalt mixtures according to claim 1, characterized in that: The top surface of the side plate of the screen box (1) is connected with a side guide plate (8) through bolts, the side guide plate (8) is located directly above the top spring seat (4), the top surface of the two sealing plates (101) is connected with both ends of a middle guide plate (9) through bolts, the bottom surface of the middle guide plate (9) is rotatably connected with the top of each camshaft (2), the edges of each guide plate are bent towards the inlet of the screen box (3), and the bottom of the screen box (1) is provided with a roller (10).

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