Asphalt concrete recycling and sorting device

Abstract

The utility model discloses an asphalt concrete recycling and sorting device which comprises a roller screening machine, a screen outer scraping plate is installed on the outer surface of the roller screening machine, a screen inner scraping plate is installed on the screen outer scraping plate, and the face, close to a screen on the roller screening machine, of the screen outer scraping plate is an inclined face. The tangent plane of the screen inner scraping plate is attached to the inner side end of the screen, the screen outer scraping plate and the screen inner scraping plate are arranged in a staggered mode, asphalt blocks clamped in meshes of the screen can be pushed into the roller screening machine through the arranged screen outer scraping plate, the asphalt blocks are made to be separated from the meshes of the screen, and therefore blockage is reduced, and the service life of the roller screening machine is prolonged. When the asphalt blocks are cleaned by the screen outer scraper blade and still cannot be separated from the screen holes of the screen, the asphalt blocks in the screen holes of the screen are cut by the screen inner scraper blade to form small particles, so that the screen holes of the screen are guaranteed to be through.

Description

Technical Field

[0001] This utility model relates to the field of asphalt recycling technology, specifically to an asphalt concrete recycling and reuse sorting device. Background Technology

[0002] In the production of modified asphalt, it is necessary to make asphalt, fillers and admixtures compatible at high temperatures. However, once the temperature cools down and the asphalt solidifies, a lot of waste will be generated. This waste contains a large number of asphalt particles of different sizes. If the waste is discarded directly, it will not only be detrimental to improving resource utilization, but also cause environmental pollution due to the harmful substances in the waste. Therefore, some existing asphalt recycling devices heat the waste to make asphalt blocks, then crush the asphalt blocks into small particles through a crusher, and then recycle them according to the different particle sizes.

[0003] In existing screening machines, asphalt can easily clog the screening holes, thus affecting the screening process. Utility Model Content

[0004] The purpose of this invention is to provide an asphalt concrete recycling and sorting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an asphalt concrete recycling and reuse sorting device, including a drum screener, wherein an outer scraper for the screen is installed on the outer surface of the drum screener, and an inner scraper for the screen is installed on the outer scraper for the screen. The outer scraper for the screen is inclined to the surface of the screen on the drum screener, and the tangential surface of the inner scraper for the screen is in contact with the inner end of the screen. The outer scraper for the screen and the inner scraper for the screen are staggered.

[0006] Preferably, positioning blocks are installed on the side walls of the two open ends of the drum screener, and the outer scraper of the screen is fastened to the positioning blocks for positioning its installation position and is fixed to the positioning blocks by bolts.

[0007] Preferably, the outer scraper of the screen has notches at both ends, and the inner scraper of the screen extends to the outside of the drum screener at both ends, with the ends bent and inserted into the notches. The outer scraper and the inner scraper of the screen are connected by bolts.

[0008] Preferably, the drum screener is inclined, and a baffle is installed at the upper feed inlet of the drum screener.

[0009] Preferably, the inclined surface of the outer scraper of the screen and the cutting edge of the inner scraper of the screen both conform to the rotation direction of the drum screener.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: An asphalt concrete recycling and sorting device can screen asphalt blocks through a drum screener, allowing asphalt blocks of the specified size to be screened out. However, during the screening process, some asphalt blocks may get stuck in the mesh of the screen, causing the mesh to become clogged and affecting the screening efficiency. By using an external scraper for the screen, the asphalt blocks stuck in the mesh can be pushed into the drum screener to detach them from the mesh, thereby reducing clogging. If the asphalt blocks still cannot detach from the mesh after being cleaned by the external scraper, the internal scraper will cut the asphalt blocks in the mesh into small particles, thus ensuring the permeability of the mesh. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram showing the position of the positioning block of this utility model;

[0013] Figure 3 This is a schematic diagram of the connection mechanism between the outer scraper and the inner scraper of the screen according to this utility model;

[0014] Figure 4 This is a schematic diagram of the inclined surface of the outer scraper of the screen of this utility model.

[0015] In the diagram: 1-Drum screener, 2-Outer scraper of screen, 3-Inner scraper of screen, 4-Positioning block, 5-Notch, 6-Baffle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: an asphalt concrete recycling and reuse sorting device, including a drum screener 1. An outer scraper 2 is installed on the outer surface of the drum screener 1, and an inner scraper 3 is installed on the outer scraper 2. The outer scraper 2 is inclined to the surface of the screen on the drum screener 1, and the cut surface of the inner scraper 3 is in contact with the inner end of the screen. The outer scraper 2 and the inner scraper 3 are staggered.

[0018] The drum screen 1 adopts an integrated flat support structure, that is, the inner and outer ends of the screen and the support on which the screen is installed are both flat.

[0019] Positioning blocks 4 are installed on the side walls of the two open ends of the drum screen 1. The outer scraper 2 of the screen is fastened to the positioning block 4 for positioning its installation position and is fixed to the positioning block 4 by bolts.

[0020] The outer scraper 2 of the screen has notches 5 at both ends. The inner scraper 3 of the screen extends to the outside of the drum screener 1 and is bent and inserted into the notches 5. The outer scraper 2 and the inner scraper 3 of the screen are connected by bolts.

[0021] The drum screen 1 is inclined, and a baffle 6 is installed at the high-end feed inlet of the drum screen 1.

[0022] The inclined surface of the outer scraper 2 of the screen and the cutting edge of the inner scraper 3 of the screen both conform to the rotation direction of the drum screener 1.

[0023] Working Principle: In use, the baffle 6 blocks the asphalt blocks entering from the upper opening of the drum screen 1, preventing them from escaping. The asphalt blocks are fed into the drum screen 1 through the feed hopper. The rotation of the drum screen 1 screens the asphalt blocks. Asphalt blocks that can pass through the mesh of the screen enter the collection tank through the lower guide plate. When an asphalt block is stuck in the mesh of the screen, the outer scraper 2 scrapes it, pushing the asphalt block stuck in the mesh into the drum screen 1, thus detaching it from the mesh and reducing blockage. If the block still cannot detach from the mesh after being cleaned by the outer scraper 2, the inner scraper 3 cuts the asphalt block in the mesh into small particles, which are then screened by the drum screen 1 to ensure the permeability of the mesh.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sorting device for recycling and reusing asphalt concrete, comprising a drum screener, characterized in that: The outer surface of the drum screener is equipped with an outer scraper for the screen, and an inner scraper for the screen is installed on the outer scraper for the screen. The outer scraper for the screen is inclined to the surface of the screen that is close to the screen on the drum screener. The cut surface of the inner scraper for the screen is in contact with the inner end of the screen. The outer scraper for the screen and the inner scraper for the screen are staggered.

2. The asphalt concrete recycling and sorting device according to claim 1, characterized in that: Positioning blocks are installed on the side walls of the two open ends of the drum screen. The outer scraper of the screen is fastened to the positioning block for positioning its installation position and is fixed to the positioning block by bolts.

3. The asphalt concrete recycling and sorting device according to claim 2, characterized in that: The outer scraper of the screen has notches at both ends, and the inner scraper of the screen extends to the outside of the drum screener at both ends, with the ends bent and inserted into the notches. The outer scraper and the inner scraper are connected by bolts.

4. The asphalt concrete recycling and sorting device according to claim 1, characterized in that: The drum screen is inclined, and a baffle is installed at the high-end feed inlet of the drum screen.

5. The asphalt concrete recycling and sorting device according to claim 1, characterized in that: The inclined surface of the outer scraper of the screen and the cutting edge of the inner scraper of the screen both conform to the rotation direction of the drum screener.

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