Material separation device at recycled aggregate belt transfer point

Abstract

The utility model relates to a material separation device at a recycled aggregate belt transfer point, which comprises a positive pressure separation fan, and the positive pressure separation fan is arranged between an upper belt and a lower belt and is used for winnowing recycled aggregate transferred from the upper belt to the lower belt so as to enable light materials and floating materials in the recycled aggregate to enter a wind scoop; a light material discharging valve is arranged on the lower portion of the air scoop and connected with a light material conveying fan and a light material collecting tank through a three-way pipeline, a light material discharging valve is arranged on the lower portion of the light material collecting tank, and a dust remover connector used for being connected with a dust remover is arranged on the upper portion of the light material collecting tank. The middle upper part of the wind scoop is connected with a light material conveying fan through a pipeline, the light material conveying fan is connected with a light material collecting tank through a pipeline, an exhaust valve is arranged at the upper part of the light material collecting tank, and a light material discharging valve is arranged at the lower part of the light material collecting tank. According to the utility model, light materials and light materials in the recycled aggregate can be well separated.

Description

Technical Field

[0001] This utility model relates to the field of construction waste screening, specifically to a material separation device at the transfer point of a recycled aggregate conveyor belt. Background Technology

[0002] Construction waste can be processed into recycled aggregates with multiple uses through crushing, screening, and impurity removal. Although the recycled aggregates from construction waste undergo multiple processes such as crushing, screening, and impurity removal, they still contain some lightweight and airy materials. Common lightweight materials include wood strips and aerated concrete blocks, while airy materials include wood chips and plastic sheets. The presence of these lightweight and airy materials in the recycled aggregates causes certain problems in practical applications, such as pipe blockage by airy materials, excessive impurities affecting quality, and poor density in the resulting absorbent bricks. For renovation construction waste, even after crushing, screening, and impurity removal, the resulting recycled aggregates still contain lightweight materials such as thin wood strips, foam blocks, narrow plastic strips, and fibrous materials. Furthermore, the crushing, screening, and impurity removal processes generate small-diameter aggregate particles and dust, all of which reduce the quality of the recycled aggregates and may even render them unusable for recycling. Therefore, from the perspective of the quality objectives of recycled aggregates, it is necessary to further sort the recycled aggregates to remove as much lightweight and airborne material as possible. However, considering that the recycled aggregates have already undergone screening by large-scale sorting equipment during the production process, adding more large-scale sorting equipment, such as large-scale air classifiers or composite sorting equipment, is not feasible from either a process layout or cost perspective.

[0003] In view of this, the present invention provides a material separation device at the conveyor belt transfer point of recycled aggregate. Considering that the transfer of recycled aggregate mainly relies on conveyor belt, a positive pressure separation fan is set at the conveyor belt transfer point to perform positive pressure separation of light materials and light floating materials. At the same time, corresponding pipelines and light material collection tanks and light floating material collection tanks are provided to recover light materials and light floating materials, thereby separating and removing light materials and light floating materials from recycled aggregate as much as possible, so as to solve the problem that some light materials and light floating materials still exist in recycled aggregate in the prior art. Utility Model Content

[0004] The present invention aims to provide a material separation device at the transfer point of recycled aggregate conveyor belt to overcome the shortcomings of the prior art. The technical problem to be solved by the present invention is achieved through the following technical solution.

[0005] An improvement of a material separation device at a recycled aggregate conveyor belt transfer point is as follows: It includes a positive pressure separation fan, which is positioned between the upper and lower conveyor belts and performs air separation on the recycled aggregate transferred from the upper belt to the lower belt, allowing light and airborne materials in the recycled aggregate to enter a hopper. The lower part of the hopper is equipped with a light material discharge valve, which is connected to a light material conveying fan and a light material collection tank via a three-way pipe. The lower part of the light material collection tank is equipped with a light material unloading valve, and the upper part of the light material collection tank is equipped with a dust collector interface for connecting to a dust collector. The upper middle part of the hopper is connected to a light material conveying fan via a pipe, and the light material conveying fan is connected to the light material collection tank via a pipe. The upper part of the light material collection tank is equipped with an exhaust valve, and the lower part is equipped with a light material unloading valve.

[0006] Preferably, an electromagnetic valve is provided between the lightweight material conveying fan and the lightweight material collection tank.

[0007] Preferably, the material drop point of the upper belt and the material receiving point of the lower belt are connected by a flexible pipe, and the positive pressure separating fan and the air hopper are located on corresponding sides of the flexible pipe.

[0008] Preferably, the positive pressure separating fan, the light material conveying fan, and the light floating material conveying fan are all equipped with air knives for controlling the air outlet angle and flow rate.

[0009] Preferably, the light material discharge valve is a star-shaped discharge valve.

[0010] Preferably, both the light material unloading valve and the light floating material unloading valve are star-shaped unloading valves.

[0011] Preferably, the lightweight material collection tank is a cyclone collection tank.

[0012] This invention effectively sorts recycled aggregate at transfer points, allowing for better classification of lightweight materials such as wood strips, aerated concrete blocks, and other light and airy materials. The majority of lightweight and airy materials are separated into an air hopper, with the airy materials further separated into a collection tank. This efficient separation of lightweight and airy materials reduces the proportion of these materials on the surface of the recycled aggregate, improving product quality and minimizing the risk of blockages in subsequent processes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] The reference numerals in the attached diagram are as follows: 1. Positive pressure separation fan; 2. Light material conveying fan; 3. Light floating material conveying fan; 4. Upper belt; 5. Lower belt; 6. Air hopper; 7. Light material discharge valve; 8. Light floating material unloading valve; 9. Light material unloading valve; 10. Solenoid valve; 11. Light floating material collection tank; 12. Exhaust valve; 13. Light material collection tank; 14. Dust collector interface. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Reference Figure 1 As shown, an improved material separation device at a recycled aggregate conveyor belt transfer point includes a positive pressure separation fan 1, which is positioned between the upper conveyor belt 4 and the lower conveyor belt 5 to perform air separation on the recycled aggregate transferred from the upper conveyor belt 4 to the lower conveyor belt 5, allowing light and airborne materials in the recycled aggregate to enter the air hopper 6. The lower part of the air hopper 6 is equipped with a light material discharge valve 7, which is connected to a light material conveying fan 2 and a light material collection tank 13 via a three-way pipe. The lower part of the light material collection tank 13 is equipped with a light material unloading valve 9, and the upper part of the light material collection tank 13 is equipped with a dust collector interface 14 for connecting to a dust collector. The upper middle part of the air hopper 6 is connected to a light material conveying fan 3 via a pipe, and the light material conveying fan 3 is connected to a light material collection tank 11 via a pipe. The upper part of the light material collection tank 11 is equipped with an exhaust valve 12, and the lower part is equipped with a light material unloading valve 8.

[0017] In this embodiment, the positive pressure separation fan 1 provides the air force required for positive pressure separation. It can be rigid or flexible and performs positive pressure separation on the recycled aggregate transferred from the upper belt 4 to the lower belt 5. This process does not affect the transfer of recycled aggregate. The positive pressure air force of the positive pressure separation fan 1 causes light materials and light floating materials to enter the air hopper 6. The light floating materials are transported to the light floating material collection tank 11 by the light floating material conveying fan 3 and discharged through the light floating material discharge valve 8. The light materials enter the three-way pipe through the light materials discharge valve 7 and are transported to the light materials collection tank 13 by the light materials conveying fan. The light materials are then discharged in conjunction with an external dust removal system.

[0018] This embodiment effectively sorts recycled aggregate at the transfer point, allowing for better classification of lightweight materials such as wood strips, aerated concrete blocks, and loose materials. The majority of lightweight and loose materials are separated into the air hopper 6, with loose materials going into the loose material collection tank 11 and lightweight materials into the lightweight material collection tank 13. This embodiment effectively separates lightweight and loose materials from the recycled aggregate, reducing the proportion of lightweight and loose materials on the surface of the recycled aggregate, improving product quality, and also reducing the risk of blockages in subsequent processes caused by loose materials.

[0019] Furthermore, a solenoid valve 10 is provided between the lightweight material conveying fan 3 and the lightweight material collection tank 11.

[0020] In this embodiment, the entry of light materials into the light material collection tank 11 is controlled by switching the solenoid valve 10 on and off.

[0021] Furthermore, the material drop point of the upper belt 4 and the material receiving point of the lower belt are connected by a flexible pipe, and the positive pressure separating fan 1 and the air hopper 6 are located on corresponding sides of the flexible pipe.

[0022] In this embodiment, by connecting the transfer point of the recycled aggregate through a flexible pipe, the lightweight materials and light floating materials in the recycled aggregate can be separated more concentratedly into the air hopper 6, thereby improving the sorting effect.

[0023] Furthermore, the positive pressure separating fan 1, the light material conveying fan 2, and the light floating material conveying fan 3 are all equipped with air knives for controlling the air outlet angle and flow rate.

[0024] Furthermore, the light material discharge valve 7 is a star-shaped discharge valve; the light material unloading valve 9 and the light floating material unloading valve 8 are both star-shaped unloading valves; and the light material collection tank 13 is a cyclone collection tank.

[0025] In this embodiment, the star-shaped discharge valve and unloading valve can discharge and unload materials without stopping the machine, while the cyclone collection tank is more conducive to the collection and unloading of lightweight materials.

[0026] It should be noted that the above detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0029] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] In the detailed description above, reference has been made to the accompanying drawings, which form part of this document. In the drawings, similar symbols typically identify similar parts unless the context otherwise indicates otherwise. The illustrated embodiments described in the detailed specification, drawings, and claims are not intended to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A material separation device at a belt transfer point of a recycled aggregate, characterized by: The device comprises a positive pressure separation fan (1) arranged between an upper belt (4) and a lower belt (5) and used for air separation of recycled aggregates carried by the upper belt (4) to the lower belt (5) so as to make light material and light floating material in the recycled aggregates enter into a dust hopper (6); a lower part of the dust hopper (6) is provided with a light material discharge valve (7) connected with a light material conveying fan (2) and a light material collecting tank (13) through a three-way pipe, a lower part of the light material collecting tank (13) is provided with a light material unloading valve (9), and an upper part of the light material collecting tank (13) is provided with a dust collector interface (14) for connecting a dust collector; a middle and upper part of the dust hopper (6) is connected with the light floating material conveying fan (3) through a pipe, the light floating material conveying fan (3) is connected with a light floating material collecting tank (11) through a pipe, and an upper part of the light floating material collecting tank (11) is provided with an exhaust valve (12) and a lower part of the light floating material collecting tank (11) is provided with a light floating material unloading valve (8).

2. A material separation device at a belt transfer point of a recycled aggregate according to claim 1, characterized in that: An electromagnetic valve (10) is arranged between the light floating material conveying fan (3) and the light floating material collecting tank (11).

3. A material separation device at a belt transfer point of a recycled aggregate according to claim 1, characterized in that: A flexible pipe is connected between a material dropping point of the upper belt (4) and a material receiving point of the lower belt, and the positive pressure separation fan (1) and the dust hopper (6) are arranged at corresponding positions on two sides of the flexible pipe.

4. A material separation device at a belt transfer point of a recycled aggregate according to claim 1, characterized in that: Air knives are arranged in the positive pressure separation fan (1), the light material conveying fan (2) and the light floating material conveying fan (3) for controlling the air outlet angle and flow.

5. A material separation device at a belt transfer point of a recycled aggregate according to claim 1, characterized in that: The light material discharge valve (7) is a star-shaped discharge valve.

6. A material separation device at a belt transfer point of a recycled aggregate according to claim 1, characterized in that: The light material unloading valve (9) and the light floating material unloading valve (8) are star-shaped unloading valves.

7. A material separation device at a belt transfer point of a recycled aggregate according to claim 1, characterized in that: The light material collecting tank (13) is a cyclone collecting tank.

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