A vibrating screen for fine separation and recycling of asphalt pavement RAP

Abstract

This utility model discloses a vibrating screen for fine separation and recycling of asphalt pavement RAP, comprising: a base, a control panel fixedly installed on the top surface of the base, a guide plate fixedly installed on the side wall of the base, a screening unit, the screening unit being placed above the base, the screening unit including a screen barrel, an extrusion block and a fixed protrusion, the rotating screen barrel being used to screen the separable and recyclable asphalt mixture waste, the rotating screen barrel driving the extrusion block and the fixed protrusion to extrude, causing the screen barrel to vibrate around the hinge point with the connecting block as the center of rotation, achieving the screening and discharge effect, achieving screening without stopping the machine, and a cleaning unit, the cleaning unit being placed inside the screening unit, the cleaning unit including a spring and a scraper, under the support of the base, enabling the screening unit to stably screen the asphalt mixture waste, under the restriction of the cleaning unit, cleaning the inside of the screen barrel, and under the restriction of the guide plate, guiding and conveying the screened material.

Description

Technical Field

[0001] This utility model relates to the field of fine separation and recycling screening technology of RAP in asphalt pavement, and in particular to a vibrating screen for fine separation and recycling of RAP in asphalt pavement. Background Technology

[0002] RAP (Rich Asphalt Pavement) refers to asphalt mixture waste that is stripped from the structural layer of the old pavement through milling, crushing, and other processes during asphalt pavement repair, maintenance, or reconstruction projects. The vibrating screen for fine separation and recycling of RAP is a vibrating screening device specifically designed for the fine separation of old asphalt mixtures in asphalt pavement recycling projects. Based on the size differences of different particle sizes in the RAP material, it achieves graded screening and separation of RAP, providing recycled aggregate with controllable particle size distribution for subsequent recycling.

[0003] Existing screening devices for fine separation and recycling of asphalt pavement RAP can only be used by adding material, screening, and then discharging. This makes it inconvenient to continuously screen without stopping the machine, which limits the screening efficiency of fine separation and recycling of asphalt pavement RAP.

[0004] Therefore, a vibrating screen for fine separation and recycling of asphalt pavement RAP is needed to solve the above problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems of the above-mentioned vibrating screen for fine separation and recycling of asphalt pavement RAP, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a vibrating screen for fine separation and recycling of asphalt pavement RAP, which solves the problem that "existing screening devices for fine separation and recycling of asphalt pavement RAP can only add material, screen and then discharge material when in use, which is inconvenient for continuous screening without stopping the machine, resulting in limited screening efficiency of fine separation and recycling of asphalt pavement RAP".

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a vibrating screen for fine separation and recycling of asphalt pavement RAP, comprising:

[0009] A base, wherein a control panel is fixedly installed on the top surface of the base, and a guide plate is fixedly installed on the side wall of the base;

[0010] The screening unit is placed above the base. The screening unit includes a screen barrel, an extrusion block and a fixed protrusion. The rotating screen barrel can screen the separable and recyclable asphalt mixture waste. The rotating screen barrel drives the extrusion block and the fixed protrusion to extrude, so that the screen barrel vibrates around the hinge point with the connecting block as the rotation center, so as to achieve the screening and discharge effect, and achieve screening without stopping the machine.

[0011] A cleaning unit is placed inside the screening unit. The cleaning unit includes a spring and a scraper. Under the elastic action of the spring, the scraper is pushed so that it is pressed tightly against the inner wall of the screen barrel to clean the adhering substances on the inner wall of the screen barrel. With the support of the base, the screening unit can stably screen asphalt mixture waste. Under the restriction of the cleaning unit, the inside of the screen barrel can be cleaned. Under the restriction of the guide plate, the screened material can be guided and conveyed.

[0012] As a preferred embodiment of the vibrating screen for fine separation and recycling of asphalt pavement RAP according to the present invention, the screening unit includes a connecting block fixedly installed on the top surface of the base, a connecting frame hinged inside the connecting block, and a feed hopper fixedly installed inside the connecting frame.

[0013] As a preferred embodiment of the vibrating screen for fine separation and recycling of asphalt pavement RAP according to the present invention, the following features are provided: a support is fixedly installed on the outer wall of the feed hopper; a motor is fixedly installed at the end of the support; a rotating rod is fixedly installed at the output end of the motor; a gear is fixedly installed on the outer wall of the rotating rod; a gear ring meshes with the outer wall of the gear; a screen barrel is fixedly installed on the inner wall of the gear ring; an extrusion block is fixedly installed on the outer wall of the screen barrel; and a fixing protrusion is provided below the extrusion block.

[0014] As a preferred embodiment of the vibrating screen for fine separation and recycling of asphalt pavement RAP described in this utility model, the end of the screen barrel is rotatably connected to the end of the feed hopper, and the outer wall of the screen barrel is provided with through holes at equal intervals. Under its constraint, when the gear rotates, it can stably drive the gear ring and the screen barrel to rotate, and the asphalt mixture waste can be screened through the through holes.

[0015] As a preferred embodiment of the vibrating screen for fine separation and recycling of asphalt pavement RAP as described in this utility model, the outer wall of the extrusion block is arc-shaped, the fixed protrusion is fixedly installed on the top surface of the base, and there are six extrusion blocks distributed around the center of the screen barrel. Under the constraint of the rotating screen barrel, the extrusion blocks rotate and are squeezed by the fixed protrusion. At this time, the screen barrel deflects through the feed hopper and the connecting frame with the hinge point of the connecting block as the rotation center, so that the screen barrel vibrates and the screening efficiency is accelerated.

[0016] As a preferred embodiment of the vibrating screen for fine separation and recycling of asphalt pavement RAP according to the present invention, the cleaning unit includes a frame fixedly installed on the inner wall of the feed hopper, a sleeve fixedly installed on the inner side of the frame, a spring provided inside the sleeve, a limit plate fixedly installed at the end of the spring, a square rod fixedly installed on the side of the limit plate away from the spring, and a scraper fixedly installed at the end of the square rod away from the limit plate.

[0017] As a preferred embodiment of the vibrating screen for fine separation and recycling of asphalt pavement RAP described in this utility model, the outer wall of the scraper is set with an inclined surface and is slidably arranged with the inner wall of the screen barrel. Under the restriction of the scraper, the inner wall of the rotating screen barrel can be cleaned.

[0018] As a preferred embodiment of the vibrating screen for fine separation and recycling of asphalt pavement RAP according to the present invention, the outer wall of the limiting plate is slidably disposed with the inside of the sleeve, and the end of the spring away from the limiting plate is fixedly installed with the top surface inside the sleeve. Under the elastic action of the spring, the limiting plate can be pushed so that the scraper stick is tightly attached to the inner wall of the screen barrel. Under the restriction of the limiting plate, the sliding of the scraper stick can be restricted.

[0019] The beneficial effects of this utility model are as follows: When recycling asphalt mixture waste, the screen barrel is added from the feed hopper. After starting the motor, the rotating rod drives the gear to rotate, which in turn drives the screen barrel to rotate through the gear ring. Screening is achieved by cooperating with the through hole. When the screen barrel rotates, the outer wall extrusion block and the arc surface of the base control panel are pressed together, causing the screen barrel to rotate at the hinge. After the extrusion block is released, the screen barrel resets under the action of gravity. The reciprocating vibration realizes the shaking screening and discharge of materials, achieving integrated non-stop screening.

[0020] When the screen barrel rotates, materials easily stick to the inner wall. The scraper can scrape off the attached materials. Under the action of the spring force, the limit plate and square rod push the scraper to stick tightly to the inner wall of the screen barrel, ensuring the cleaning effect and ensuring that the screening is carried out normally. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 This is a schematic diagram of the main structure of a vibrating screen for fine separation and recycling of RAP (Rapid Appreciation and Regeneration) in asphalt pavement according to this utility model.

[0023] Figure 2 This is a schematic diagram of the screening and cleaning units of a vibrating screen for fine separation and recycling of RAP (Rapid Appreciation and Regeneration) in asphalt pavement according to this utility model.

[0024] Figure 3 This is a schematic diagram of the screening unit structure of a vibrating screen for fine separation and recycling of RAP (Rapid Aplasma Acrylic Acid) in asphalt pavement according to this utility model.

[0025] Figure 4 This is an exploded cross-sectional view of the screening unit of a vibrating screen for fine separation and recycling of asphalt pavement RAP according to the present invention.

[0026] Figure 5 This is a schematic diagram of the cleaning unit structure of a vibrating screen for fine separation and regeneration of asphalt pavement RAP according to the present invention.

[0027] Figure 6 This is a schematic cross-sectional view of the cleaning unit of a vibrating screen for fine separation and recycling of asphalt pavement RAP according to the present invention.

[0028] Figure descriptions: 100, base; 101, control panel; 102, guide plate; 200, screening unit; 300, cleaning unit; 201, connecting block; 202, connecting frame; 203, feed hopper; 204, bracket; 205, motor; 206, rotating rod; 207, gear; 208, gear ring; 209, screen barrel; 210, extrusion block; 211, fixing protrusion; 301, frame; 302, sleeve; 303, spring; 304, limiting plate; 305, square rod; 306, scraper. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0032] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0033] Example 1

[0034] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention, which provides a vibrating screen for fine separation and recycling of asphalt pavement RAP, comprising:

[0035] A base 100 has a control panel 101 fixedly installed on its top surface and a guide plate 102 fixedly installed on its side wall.

[0036] Screening unit 200 is placed above base 100. Screening unit 200 includes screen barrel 209, extrusion block 210 and fixed protrusion 211. The rotating screen barrel 209 can screen the separable and recyclable asphalt mixture waste. The rotating screen barrel 209 drives the extrusion block 210 and fixed protrusion 211 to squeeze, so that the screen barrel 209 vibrates around the hinge point with the connecting block 201 as the rotation center, so as to achieve the screening and discharge effect, and achieve screening without stopping the machine.

[0037] The cleaning unit 300 is placed inside the screening unit 200. The cleaning unit 300 includes a spring 303 and a scraper 306. Under the elastic action of the spring 303, the scraper 306 is pushed so that the scraper 306 is in close contact with the inner wall of the screen barrel 209 to clean the deposits on the inner wall of the screen barrel 209.

[0038] During use, the screening unit 200 can stably screen asphalt mixture waste under the support of the base 100, the inside of the screen barrel 209 can be cleaned under the restriction of the cleaning unit 300, and the screened material can be guided and conveyed under the restriction of the guide plate 102.

[0039] Example 2

[0040] Reference Figure 3 and Figure 4 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment is further optimized based on the above embodiment, as follows:

[0041] The screening unit 200 includes a connecting block 201 fixedly installed on the top surface of the base 100. A connecting frame 202 is hinged inside the connecting block 201. A feed hopper 203 is fixedly installed inside the connecting frame 202. A bracket 204 is fixedly installed on the outer wall of the feed hopper 203. A motor 205 is fixedly installed at the end of the bracket 204. A rotating rod 206 is fixedly installed at the output end of the motor 205. A gear 207 is fixedly installed on the outer wall of the rotating rod 206. A gear ring 208 meshes with the outer wall of the gear 207. A screen barrel 209 is fixedly installed on the inner wall of the gear ring 208. An extrusion block 210 is fixedly installed on the outer wall of the screen barrel 209. A fixing protrusion 211 is provided below the extrusion block 210.

[0042] The end of the screen barrel 209 is rotatably connected to the end of the feed hopper 203. The outer wall of the screen barrel 209 is provided with through holes at equal intervals. Under its restriction, when the gear 207 rotates, it can stably drive the gear ring 208 and the screen barrel 209 to rotate. The asphalt mixture waste can be screened through the through holes.

[0043] The outer wall of the extrusion block 210 is arc-shaped, and the fixed protrusion 211 is fixedly installed on the top surface of the base 100. There are six extrusion blocks 210, which are distributed around the center of the screen barrel 209. Under the constraint of the rotating screen barrel 209, the extrusion blocks 210 rotate and are squeezed by the fixed protrusion 211. At this time, the screen barrel 209 deflects through the feed hopper 203 and the connecting frame 202 with the hinge point of the connecting block 201 as the rotation center, causing the screen barrel 209 to vibrate and speed up the screening efficiency.

[0044] During use, when asphalt mixture waste is recycled, it needs to be screened. The waste is fed into the screen barrel 209 from the feed hopper 203. At this time, the motor 205 is started, and the rotating rod 206 fixedly installed at its output end drives the gear 207 to rotate. Since the end of the screen barrel 209 is rotatably connected to the end of the feed hopper 203, under its support and constraint, the rotating gear 207 drives the gear ring 208 fixedly sleeved on the outer wall of the screen barrel 209 to rotate. The rotating screen barrel 209, in conjunction with the through holes on its outer wall, can screen the asphalt mixture waste. When the screen barrel 209 rotates, its… The extrusion block 210, which is fixedly installed on the outer wall, slides and extrudes the control panel 101, which is fixedly installed on the top surface of the base 100. Under its constraint, the screen barrel 209 rotates around the hinge point with the connecting block 201 via the feed hopper 203 and the connecting frame 202. When the extrusion block 210 and the fixed protrusion 211 no longer extrude each other, the screen barrel 209 deflects and resets around the hinge point with the connecting block 201 under the action of gravity. The reciprocating motion causes the screen barrel 209 to vibrate, shaking and screening the material inside. At the same time, the material can be discharged to achieve integrated screening and achieve the effect of non-stop machine operation.

[0045] Example 3

[0046] Reference Figure 5 and Figure 6This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment is further optimized based on the above embodiments, as detailed below:

[0047] The cleaning unit 300 includes a frame 301 fixedly installed on the inner wall of the feed hopper 203. A sleeve 302 is fixedly installed inside the frame 301. A spring 303 is provided inside the sleeve 302. A limit plate 304 is fixedly installed at the end of the spring 303. A square rod 305 is fixedly installed on the side of the limit plate 304 away from the spring 303. A scraper 306 is fixedly installed at the end of the square rod 305 away from the limit plate 304.

[0048] The outer wall of the scraper 306 is inclined and slides against the inner wall of the screen barrel 209. Under the restriction of the scraper 306, the inner wall of the rotating screen barrel 209 can be cleaned.

[0049] The outer wall of the limiting plate 304 is slidably disposed with the inside of the sleeve 302. The end of the spring 303 away from the limiting plate 304 is fixedly installed with the top surface inside the sleeve 302. Under the elastic action of the spring 303, the limiting plate 304 can be pushed, so that the scraper 306 is tightly attached to the inner wall of the screen barrel 209. Under the restriction of the limiting plate 304, the sliding of the square rod 305 can be restricted.

[0050] When the screen barrel 209 rotates and screens, materials easily adhere to its inner wall. Under the restriction of the scraper 306, the adhering materials inside the rotating screen barrel 209 can be scraped and cleaned. Under the elastic action of the spring 303, the limiting plate 304, the square rod 305 and the scraper 306 can be pushed so that the scraper 306 is in close contact with the inner wall of the screen barrel 209, so as to clean the inner wall of the screen barrel 209 and ensure that the screen barrel 209 can screen asphalt mixture waste normally.

[0051] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vibrating screen for fine separation and regeneration of RAP of asphalt pavement, characterized by, include: A base (100) is provided, on the top surface of which a control panel (101) is fixedly installed, and on the side wall of which a guide plate (102) is fixedly installed. Screening unit (200) is placed above base (100). The screening unit (200) includes screen barrel (209), extrusion block (210) and fixed protrusion (211). The rotating screen barrel (209) can screen the separable and recyclable asphalt mixture waste. The rotating screen barrel (209) drives the extrusion block (210) and fixed protrusion (211) to squeeze, so that the screen barrel (209) vibrates with the hinge point with the connecting block (201) as the rotation center, so as to achieve the screening and discharge effect, and achieve screening without stopping the machine. A cleaning unit (300) is placed inside the screening unit (200). The cleaning unit (300) includes a spring (303) and a scraper (306). Under the elastic action of the spring (303), the scraper (306) is pushed so that the scraper (306) is in close contact with the inner wall of the screen barrel (209) to clean the deposits on the inner wall of the screen barrel (209).

2. The vibrating screen for fine separation and regeneration of RAP of asphalt pavement according to claim 1, characterized in that: The screening unit (200) includes a connecting block (201) fixedly installed on the top surface of the base (100), a connecting frame (202) is hinged inside the connecting block (201), and a feed hopper (203) is fixedly installed inside the connecting frame (202).

3. The vibrating screen for fine separation and regeneration of RAP of asphalt pavement according to claim 2, characterized in that: A bracket (204) is fixedly installed on the outer wall of the feed hopper (203). A motor (205) is fixedly installed at the end of the bracket (204). A rotating rod (206) is fixedly installed at the output end of the motor (205). A gear (207) is fixedly installed on the outer wall of the rotating rod (206). A gear ring (208) meshes with the outer wall of the gear (207). A screen barrel (209) is fixedly installed on the inner wall of the gear ring (208). An extrusion block (210) is fixedly installed on the outer wall of the screen barrel (209). A fixing protrusion (211) is provided below the extrusion block (210).

4. The vibrating screen for fine separation and regeneration of RAP of asphalt pavement according to claim 3, characterized in that: The end of the screen barrel (209) is rotatably connected to the end of the feed hopper (203), and the outer wall of the screen barrel (209) is provided with through holes at equal intervals.

5. The vibrating screen for fine separation and regeneration of RAP of asphalt pavement according to claim 3, characterized in that: The outer wall of the extrusion block (210) is arc-shaped, and the fixed protrusion (211) is fixedly installed on the top surface of the base (100). There are six extrusion blocks (210) distributed around the center of the sieve barrel (209).

6. The vibrating screen for fine separation and regeneration of RAP of asphalt pavement according to claim 1, characterized in that: A cleaning unit (300) includes a frame (301) fixedly installed on the inner wall of the feed hopper (203). A sleeve (302) is fixedly installed on the inner side of the frame (301). A spring (303) is provided inside the sleeve (302). A limiting plate (304) is fixedly installed at the end of the spring (303). A square rod (305) is fixedly installed on the side of the limiting plate (304) away from the spring (303). A scraper (306) is fixedly installed at the end of the square rod (305) away from the limiting plate (304).

7. The vibrating screen for fine separation and regeneration of RAP of asphalt pavement according to claim 6, characterized in that: The outer wall of the scraping rod (306) is provided in a slope, and is slidably arranged with the inner wall of the sieve barrel (209).

8. The vibrating screen for fine separation and regeneration of RAP of asphalt pavement according to claim 6, characterized in that: The outer wall of the limiting plate (304) is slidably arranged with the inner part of the sleeve (302), and one end of the spring (303) away from the limiting plate (304) is fixedly installed with the top surface of the inner part of the sleeve (302).

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