Device for feeding RAP fine material into microwave box for spreading in microwave regeneration mixing plant

Abstract

The utility model relates to the technical field of asphalt mixture regeneration, in particular to an RAP fine material microwave box feeding and spreading device for a microwave regeneration mixing station, which comprises an RAP fine material receiving hopper, an RAP fine material spreading disc is mounted below the RAP fine material receiving hopper and on the inner side wall of a spreading box, a skirt belt conveyor is mounted below the spreading box, and the skirt belt conveyor is mounted on the outer side wall of the spreading box. The spreading box is fixedly connected with the skirt belt conveyor through the mounting bracket, the skirt belt conveyor driving motor is connected with the driving roller, and the spreading disc driving motor is connected with the spreading disc main shaft through the speed reducer. According to the utility model, the RAP fine material is not directly fed into the traditional hot air drying roller to be heated after being lifted, but is directly and uniformly spread on the skirt belt conveyor through the spreading device, and then enters the microwave box to be heated; the problems that the RAP fine material contains more asphalt compared with the coarse material, so that the material is severely adhered to the wall of the drying cylinder, and the asphalt is aged after being heated are solved, and the regeneration quality of the regenerated asphalt mixture can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of asphalt mixture regeneration, especially to a RAP fine material into microwave box spreading device for microwave regeneration mixing station. BACKGROUND

[0002] With the acceleration of urbanization and the continuous development of road construction, the recycling of waste asphalt pavement has become an important environmental protection issue, and microwave regeneration technology, as an efficient and environmentally friendly waste material processing method, is increasingly widely used in mixing stations. The RAP fine material into microwave box spreading device, as a key component of the microwave regeneration mixing station, directly affects the regeneration effect and production efficiency of the waste asphalt pavement.

[0003] When the existing asphalt regeneration mixing station heats and regenerates asphalt pavement recycling materials, all RAP materials are measured and lifted to the heating and drying drum by the elevator for heating. However, due to the large amount of asphalt contained in the RAP fine material, the melted asphalt is easily bonded to the wall of the drying drum during the heating process, causing loss of asphalt. In severe cases, it may even cause the drying drum to catch fire. At the same time, long-term heating of asphalt in the drying drum can cause further aging, reducing the quality of the regenerated asphalt mixture. This phenomenon is more pronounced when regenerating a large amount of RAP. This is one of the reasons why the RAP blending rate is not high. To solve the problem of asphalt regeneration and heating aging, microwave heating has been proven to be a good solution. Therefore, it is proposed that the RAP fine material be directly heated in the microwave box without passing through the traditional hot air drying drum. However, the RAP fine material needs to be evenly spread before entering the microwave box to achieve uniform heating in the microwave box. Therefore, the RAP fine material into microwave box spreading device for microwave regeneration mixing station is an effective means to solve this problem. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a RAP fine material into microwave box spreading device for microwave regeneration mixing station.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a RAP fine material into microwave box spreading device for microwave regeneration mixing station, comprising a RAP fine material receiving hopper, a spreading disc driving motor and a skirt belt conveyor driving motor, the RAP fine material spreading disc is installed below the RAP fine material receiving hopper and the inner side wall of the spreading box, the skirt belt conveyor is installed below the spreading box, the spreading box and the skirt belt conveyor are fixedly connected through a mounting bracket, the skirt belt conveyor driving motor is connected with the driving drum, and the spreading disc driving motor is connected with the spreading disc main shaft through a speed reducer.

[0006] As a further description of the above technical scheme:

[0007] The shape of the fine material receiving hopper is conical, and the lower end opening of the fine material receiving hopper is located at the center of the distribution plate, so that the fine material received by the elevator can be concentrated and freely fall on the distribution plate under the action of gravity.

[0008] As a further description of the above technical solution:

[0009] The surface of the fine material distribution plate is welded with paddles, the paddles are provided in several groups, the distribution plate driving motor can uniformly distribute the RAP fine material falling from the fine material receiving hopper, and the distribution amount and the distribution width can be adjusted by adjusting the rotating speed of the distribution plate driving motor, the fine material distribution plate is installed on the side wall support of the distribution box, and the fine material distribution plate and the apron belt conveyor located below the fine material distribution plate are provided with sufficient gaps.

[0010] As a further description of the above technical solution:

[0011] The distribution box is a closed box body with an open top and a bottom, and the distribution box and the apron belt conveyor conveying square box are provided with sufficient gaps.

[0012] As a further description of the above technical solution:

[0013] The apron belt conveyor is welded with supports on both sides, the supports can install the distribution box, the distribution plate and the receiving hopper as a whole, and the apron belt conveyor driving motor is connected with the driving roller.

[0014] As a further description of the above technical solution:

[0015] After being lifted, the RAP fine material does not enter the existing RAP hot air drying drum for heating, but directly enters the microwave box after being uniformly distributed, so that the problem of material sticking caused by the fine material entering the hot air drying drum can be solved.

[0016] As a further description of the above technical solution:

[0017] The distribution plate driving motor is located on the inner side of the support and above the apron belt conveyor.

[0018] The utility model has the advantages of the following:

[0019] 1、In the utility model, after being lifted, the RAP fine material does not directly enter the traditional hot air drying drum for heating, but is directly and uniformly distributed on the apron belt conveyor through the distribution device, and then enters the microwave box for heating, so that the problem of serious material sticking on the drying drum wall and aging of heated asphalt caused by the fact that the RAP fine material contains more asphalt than coarse material can be solved, and the regeneration quality of the reclaimed asphalt mixture can be greatly improved.

[0020] 2、The utility model discloses a RAP fine material is scattered to the microwave box in the microwave regeneration stirring station, and the RAP fine material is scattered to the microwave box in the microwave regeneration stirring station through the RAP fine material scattering device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structure schematic view of the RAP fine material scattering device for the microwave regeneration stirring station is provided for the utility model;

[0022] Figure 2 A structure front view of the RAP fine material scattering device for the microwave regeneration stirring station is provided for the utility model;

[0023] Figure 3 A structure side view of the RAP fine material scattering device for the microwave regeneration stirring station is provided for the utility model;

[0024] Figure 4 A partial structure schematic view of the RAP fine material scattering device for the microwave regeneration stirring station is provided for the utility model.

[0025] Legend:

[0026] 1, RAP fine material receiving hopper;2, RAP fine material scattering disc;3, RAP fine material scattering box;4, skirt belt conveyor;5, drive cylinder;6, scattering disc drive motor;7, skirt belt conveyor drive motor;8, mounting bracket;201, scattering disc paddle. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] Reference Figures 1-4The utility model provides an embodiment: a kind of for microwave regeneration stirring station RAP fine material enters microwave box spreading device, including RAP fine material receiving hopper 1, spreading disc drive motor 6 and apron belt conveyor drive motor 7, RAP fine material spreading disc 2 is installed in the lower side wall of RAP fine material receiving hopper 1 and spreading box 3, the lower side wall of spreading box 3 is equipped with apron belt conveyor 4, spreading box 3 is fixedly connected with apron belt conveyor 4 by mounting bracket 8, apron belt conveyor drive motor 7 is connected with driving drum 5, spreading disc drive motor 6 is connected with spreading disc main shaft by speed reducer, can it is heated to regeneration construction temperature after RAP fine material is evenly spread into microwave box, solve the problem that due to RAP fine material compared with coarse material contains more asphalt and leads to drying cylinder wall serious material sticking, heating asphalt aging, can greatly improve the regeneration quality of recycled asphalt mixture.

[0029] Wherein, the shape of fine material receiving hopper 1 is conical, the opening at the lower end of fine material receiving hopper 1 is located at the center of the spreading disc, fine material receiving hopper 1 can concentrate the RAP fine material conveyed by the elevator and freely fall on the spreading disc under the action of gravity, the surface of fine material spreading disc 2 is welded with paddle 201, paddle 201 is provided in several groups, spreading disc drive motor 6 can evenly spread the RAP fine material falling from fine material receiving hopper 1, and the spreading amount and spreading width can be adjusted by adjusting the rotating speed of spreading disc drive motor 6, fine material spreading disc 2 is installed on the side wall support of spreading box 3, fine material spreading disc 2 and apron belt conveyor 4 located below it have sufficient gap, spreading box 3 is a closed box body around, open type box body up and down, spreading box 3 and apron belt conveyor 4 conveying square box have sufficient gap, apron belt conveyor 4 is respectively welded with support 8 on both sides, support 8 can install spreading box 3, spreading disc 2, receiving hopper 1 and the like as a whole, apron belt conveyor drive motor 7 is connected with driving drum 5, after the RAP fine material is lifted, it does not enter the existing RAP hot air drying drum for heating, but directly enters the microwave box after being evenly spread, such structure design can solve the problem of material sticking caused by fine material entering hot air drying drum, spreading disc drive motor 6 is located at the inner side of support 8 and above apron belt conveyor 4, when RAP fine material falls into spreading disc 2, spreading disc drive motor 6 drives spreading disc main shaft to rotate through speed reducer, and then drives paddle 201 on spreading disc 2 to rotate. The design of these paddles enables fine material to be evenly spread to all around, covering apron belt conveyor 4 located below the spreading disc. By adjusting the rotating speed of spreading disc drive motor 6, the spreading amount and spreading width of RAP fine material can be flexibly controlled to meet different production needs.

[0030] Working principle: when using the microwave regeneration stirring station RAP fine material into the microwave box scattering device, first, the RAP fine material without heating is lifted to the RAP fine material receiving hopper 1 by the elevator or other lifting device, because the receiving hopper is designed as a conical shape, the lower end opening is accurately located at the center position of the scattering disc 2, which enables the fine material to be concentrated and smoothly fall into the scattering disc under the action of gravity, when the RAP fine material falls into the scattering disc 2, the scattering disc driving motor 6 drives the scattering disc main shaft to rotate through the speed reducer, and in turn drives the paddle 201 on the scattering disc 2 to rotate, the design of these paddles enables the fine material to be uniformly scattered to all directions, covering the apron belt conveyor 4 below the scattering disc, by adjusting the rotating speed of the scattering disc driving motor 6, the scattering amount and width of the RAP fine material can be flexibly controlled to meet different production requirements, the uniformly scattered RAP fine material then falls on the apron belt conveyor 4, the apron belt conveyor driving motor 7 drives the belt conveyor to rotate through the connection driving drum 5, thereby continuously and stably conveying the fine material to the microwave heating box, by adjusting the rotating speed of the apron belt conveyor driving motor 7, the conveying amount of the fine material can be accurately controlled to ensure that it matches the processing capacity of the microwave heating box, the whole scattering device firmly connects the receiving hopper 1, the scattering disc 2, the scattering box 3 and the apron belt conveyor 4 parts into an integral whole through the installation support 8, ensuring the stability and reliability in the operation process, the scattering box 3 is designed as a structure with closed four sides and open top and bottom, which not only prevents the fine material from splashing, but also ensures smooth docking with the conveying direction of the apron belt conveyor, the design innovation of the device is that the RAP fine material is not directly heated in the traditional hot air drying drum after lifting, but is uniformly scattered on the apron belt conveyor 4 through the scattering device, and then heated in the microwave box, this design effectively avoids the sticking problem of the fine material in the hot air drying process, and improves the production efficiency and product quality.

[0031] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A RAP fine material into microwave box distribution device for microwave regeneration stirring station, comprising RAP fine material receiving hopper (1), distribution disc drive motor (6) and apron belt machine drive motor (7), characterized in that: The RAP fine material scattering disc (2) is installed below the RAP fine material receiving hopper (1) and the inner side wall of the scattering box (3), the lower part of the scattering box (3) is installed with the apron belt conveyor (4), the scattering box (3) and the apron belt conveyor (4) are fixedly connected through the mounting support (8), the apron belt conveyor driving motor (7) is connected with the driving roller (5), and the scattering disc driving motor (6) is connected with the scattering disc main shaft through a speed reducer.

2. A device for scattering RAP fine materials into a microwave box of a RAP mixing station according to claim 1, characterized in that: The fine material receiving hopper (1) is conical, and the lower end opening of the fine material receiving hopper (1) is located at the center of the scattering disc, so that the RAP fine material conveyed by the elevator can be concentrated and freely fall on the scattering disc under the action of gravity.

3. A device for scattering RAP fine materials into a microwave box of a RAP mixing station according to claim 2, characterized in that: The fine material scattering disc (2) is welded with paddles (201) on the surface, the paddles (201) are provided in several groups, the scattering disc driving motor (6) can uniformly scatter the RAP fine material falling from the fine material receiving hopper (1), and the scattering amount and the scattering width can be adjusted by adjusting the rotating speed of the scattering disc driving motor (6), the fine material scattering disc (2) is installed on the side wall support of the scattering box (3), and the fine material scattering disc (2) and the apron belt conveyor (4) below it are provided with sufficient gaps.

4. A device for scattering RAP fine materials into a microwave box of a RAP mixing station according to claim 3, characterized in that: The scattering box (3) is a closed box with an open top and bottom, and the scattering box (3) and the apron belt conveyor (4) conveying the square box are provided with sufficient gaps.

5. A device for scattering RAP fine materials into a microwave box of a RAP mixing station according to claim 4, characterized in that: The apron belt conveyor (4) is welded with supports (8) on both sides, the supports (8) can install the scattering box (3), the scattering disc (2) and the receiving hopper (1) as a whole, and the apron belt conveyor driving motor (7) is connected with the driving roller (5).

6. A device for scattering RAP fine materials into a microwave box of a RAP mixing station according to claim 5, characterized in that: After being lifted, the RAP fine material does not enter the existing RAP hot air drying drum for heating, but directly enters the microwave box after being uniformly scattered, so that the problem of material sticking caused by the fine material entering the hot air drying drum can be solved.

7. A device for scattering RAP fine materials into a microwave box of a RAP mixing station according to claim 6, characterized in that: The scattering disc driving motor (6) is located on the inner side of the support (8) and above the apron belt conveyor (4).

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