An adherent impurity removal device

Abstract

This utility model provides an adhesion and impurity removal device, relating to the field of recycled aggregate impurity removal technology. It includes a material conveying assembly, an adhesion assembly, and a cleaning component. The material conveying assembly includes a material conveying section and a first rotating shaft, with several first rotating shafts connected by a drive mechanism. The adhesion assembly is positioned above the material conveying assembly and includes a second rotating shaft, a third rotating shaft, and an adhesion part. The second and third rotating shafts are drive-connected, and the adhesion part is wound around the second and third rotating shafts. The rotation direction of the second rotating shaft is the same as that of the first rotating shaft. The adhesion part wound around the third rotating shaft can make reverse contact with the aggregate on the material conveying section to adhere light impurities in the aggregate. The cleaning component contacts the adhesion part and is used to remove the light impurities from the adhesion part. The adhesion and impurity removal device provided by this utility model solves the technical problems of difficulty in removing light impurities from fine-grained recycled aggregates and high processing costs.

Description

Technical Field

[0001] This utility model relates to the field of recycled aggregate impurity removal technology, and in particular to an adhesive impurity removal device. Background Technology

[0002] Currently, common methods for impurity removal in construction waste treatment mainly include air classification and flotation. Among these, air classification equipment is widely used in the removal of impurities from recycled aggregates from construction waste, effectively separating larger-sized waste or lightweight impurities from coarse aggregates. However, air classification has significant limitations for removing impurities from fine-grained recycled aggregates: during the separation process, it easily blows out fine aggregates along with lightweight impurities, leading to a decrease in classification efficiency and difficulty in achieving effective separation. In addition, air classification equipment usually requires a dust collection system to control dust pollution, resulting in problems such as large equipment footprint and high investment costs.

[0003] On the other hand, flotation technology separates lightweight impurities from aggregates in a liquid based on their density difference, and it shows particularly good impurity removal effects in sand washing processes. However, the application of this method in recycled aggregates from construction waste is limited, mainly because the impurity removal process generates a large amount of wastewater containing impurities, which is difficult and costly to treat, hindering environmental protection and large-scale promotion. Utility Model Content

[0004] The purpose of this invention is to provide an adhesion and impurity removal device to solve the technical problems of difficulty in removing lightweight impurities from fine-grained recycled aggregates and high processing costs in the prior art.

[0005] This utility model provides an adhesion and impurity removal device, comprising: a material conveying assembly, an adhesion assembly, and an impurity removal component; The material conveying assembly is used to convey recycled aggregate to be cleaned. The material conveying assembly includes a material conveying section and a plurality of first rotating shafts, which are connected by the material conveying section. The adhesion component is disposed above the material conveying component. The adhesion component includes a second rotating shaft, a third rotating shaft, and an adhesion part. The second rotating shaft and the third rotating shaft are connected by a drive. The second rotating shaft is disposed obliquely above the third rotating shaft. The adhesion part is wrapped around the second rotating shaft and the third rotating shaft. The rotation direction of the second rotating shaft is the same as the rotation direction of the first rotating shaft. The adhesion part wrapped around the third rotating shaft can make reverse contact with the recycled aggregate to be cleaned on the material conveying component to adhere to the light impurities in the recycled aggregate. The cleaning component contacts the adhesive portion to remove light impurities from the adhesive portion.

[0006] In an optional embodiment, the adhesive portion comprises a strip of cotton or linen fabric; The second rotating shaft and the third rotating shaft are connected by the cotton and linen strips.

[0007] In an optional embodiment, both the second rotating shaft and the third rotating shaft are provided with a rubber layer on their exterior.

[0008] In an optional embodiment, the adhesive part includes a strip of cotton or linen fabric or Velcro, and a transmission component; The second rotating shaft and the third rotating shaft are connected by the transmission component. The cotton or linen strip or the Velcro is applied to the surface of the transmission component.

[0009] In an optional embodiment, there is a gap between the third rotating shaft and the material conveying unit.

[0010] In an optional embodiment, the adhesion assembly includes a plurality of the third rotational shafts; Several of the aforementioned third rotating shafts are coaxially connected by connecting rods; A gap is provided between adjacent third rotation axes.

[0011] In an optional embodiment, the second rotating shaft is disposed diagonally above one side of the third rotating shaft and is located on the side opposite to the conveying direction of the recycled aggregate to be removed.

[0012] In an optional embodiment, the material conveying section is configured as a conveyor belt, on which recycled aggregate to be removed is placed.

[0013] In an optional implementation, a collection component is also included; The collecting component is disposed above the material conveying assembly and below the cleaning component, and is used to receive the light impurities removed by the cleaning component.

[0014] In an optional embodiment, a vibrator is connected to the first rotating shaft.

[0015] The adhesive impurity removal device provided by this utility model achieves stable conveying of recycled aggregate to be impurity removed by setting up a material conveying assembly. The material conveying part is used to carry and continuously convey the aggregate, providing a basic guarantee for the subsequent impurity removal process. The adhesive assembly achieves efficient separation of light impurities in the recycled aggregate. The second rotating shaft is located obliquely above the third rotating shaft and is connected to the third rotating shaft. The adhesive part is wrapped around the outside of the second and third rotating shafts. The rotation direction of the second rotating shaft is set to be the same as the rotation direction of the first rotating shaft in the material conveying assembly. The part of the adhesive part wrapped around the third rotating shaft can form reverse contact with the recycled aggregate on the material conveying part, thereby prolonging the contact time and enhancing the adsorption effect, significantly improving the removal efficiency and adsorption effect of light impurities (such as wood chips, paper chips, light plastics, etc.). By setting up a cleaning component, light impurities on the adhesive part are removed to prevent impurities from accumulating on the adhesive part and affecting the subsequent impurity removal effect, thereby ensuring the continuous and efficient operation of the device. This utility model has a reasonable structural design, stable operation, and simple maintenance. It is suitable for the removal of impurities from recycled aggregates, especially fine-grained recycled aggregates, and solves the technical problems of difficulty in removing lightweight impurities from fine-grained recycled aggregates and high processing costs in the prior art. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the adhesion and impurity removal device provided in the embodiments of this utility model; Figure 2 A front view of the adhesion and impurity removal device provided in an embodiment of this utility model; Figure 3 This is a structural schematic diagram of the adhesion and impurity removal device provided in an embodiment of the present invention from another perspective.

[0018] Icons: 100 - Material conveying assembly; 110 - Material conveying section; 120 - First rotating shaft; 200 - Adhesion assembly; 210 - Second rotating shaft; 220 - Third rotating shaft; 230 - Adhesion section; 300 - Cleaning component; 400 - Collection component; 500 - Connecting rod. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] 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 of 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.

[0021] 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 according to the specific circumstances.

[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0023] like Figures 1-3As shown, this embodiment provides an adhesion and impurity removal device, including: a material conveying assembly 100, an adhesion assembly 200, and a cleaning component 300; the material conveying assembly 100 is used to convey recycled aggregate to be removed, and the material conveying assembly 100 includes a material conveying section 110 and a plurality of first rotating shafts 120, which are connected by transmission through the material conveying section 110; the adhesion assembly 200 is disposed above the material conveying assembly 100, and the adhesion assembly 200 includes a second rotating shaft 210, a third rotating shaft 220, and an adhesion part 230, the second rotating shaft 210 and The third rotating shaft 220 is connected for transmission, and the second rotating shaft 210 is disposed obliquely above the third rotating shaft 220. The adhesive part 230 is wrapped around the second rotating shaft 210 and the third rotating shaft 220. The rotation direction of the second rotating shaft 210 is the same as the rotation direction of the first rotating shaft 120. The adhesive part 230 wrapped around the third rotating shaft 220 can make reverse contact with the aggregate to be cleaned and recycled on the material conveying part 110 to adhere the light impurities in the aggregate to be cleaned and recycled. The cleaning member 300 abuts against the adhesive part 230 to remove the light impurities on the adhesive part 230.

[0024] The adhesive impurity removal device provided by this utility model is a device for removing impurities from small-particle-size recycled aggregate streams. It achieves stable conveying of the recycled aggregate to be impurities removed through a material conveying assembly 100, wherein the material conveying section 110 carries and continuously conveys the aggregate, providing a basic guarantee for the subsequent impurity removal process; and achieves efficient separation of light impurities in the recycled aggregate through an adhesive assembly 200. The second rotating shaft 210 is located obliquely above and connected to the third rotating shaft 220, and the adhesive part 230 is arranged around the outside of the second rotating shaft 210 and the third rotating shaft 220 to remove impurities. The rotation direction of the second rotating shaft 210 is set to be the same as the rotation direction of the first rotating shaft 120 in the material conveying assembly 100. The portion of the adhesion part 230 surrounding the third rotating shaft 220 can form reverse contact with the recycled aggregate on the material conveying part 110, thereby prolonging the contact time and enhancing the adsorption effect, significantly improving the removal efficiency and adsorption effect of light impurities (such as wood chips, paper scraps, and lightweight plastics). By setting the cleaning component 300, light impurities on the adhesion part 230 are removed, preventing impurities from accumulating on the adhesion part 230 and affecting the subsequent impurity removal effect, thereby ensuring the continuous and efficient operation of the device. The present invention has a reasonable structural design, stable operation, and simple maintenance. It is suitable for the impurity removal treatment of recycled aggregate, especially fine-grained recycled aggregate, and solves the technical problems of difficulty in removing light impurities from fine-grained recycled aggregate and high processing costs in the prior art.

[0025] Regarding the shape and structure of the material conveying assembly 100, in detail: like Figures 1-3As shown, the material conveying assembly 100 includes a material conveying section 110 and a plurality of first rotating shafts 120. The plurality of first rotating shafts 120 are connected by transmission through the material conveying section 110. The material conveying section 110 is specifically configured as a conveyor belt (e.g., a belt). The conveyor belt is on which the aggregate to be removed and recycled is placed. The conveyor belt is preferably horizontally arranged. There can be multiple first rotating shafts 120, and the specific number can be determined according to the length of the conveyor belt. These first rotating shafts 120 are connected to each other by transmission through the conveyor belt, driving the conveyor belt to run stably, thereby realizing the continuous conveying of the aggregate to be removed and recycled.

[0026] Regarding the shape and structure of the adhesion component 200, in detail: The adhesion component 200 is positioned above the material conveying component 100. The adhesion component 200 includes a second rotating shaft 210, a third rotating shaft 220, and an adhesion part 230. The third rotating shaft 220 is located above the material conveying component 110, and the second rotating shaft 210 is positioned diagonally above the third rotating shaft 220. The second rotating shaft 210 and the third rotating shaft 220 are connected by a drive shaft, with the second rotating shaft 210 as the driving shaft and the third rotating shaft 220 as the driven shaft. The adhesion part 230 is wound around the second rotating shaft 210 and the third rotating shaft 220. The rotation direction of the second rotating shaft 210 is the same as the rotation direction of the first rotating shaft 120. The adhesion part 230 wound around the third rotating shaft 220 can make reverse contact with the recycled aggregate to be cleaned on the material conveying component 110, thereby enhancing the adhesion part 230's ability to capture lightweight impurities.

[0027] In an optional embodiment, the adhesive part 230 is a cotton-linen strip, which can be prepared by cutting from a whole piece of waste fabric; the second rotating shaft 210 and the third rotating shaft 220 are connected by the cotton-linen strip. Specifically, the cotton-linen material can effectively adhere to small, lightweight debris (small wood chips, cardboard scraps, lightweight plastics, etc.), similar to the principle of Velcro, where the cotton-linen fibers hook and adhere to the rough surface of the debris. Simultaneously, during the lifting process, aggregate particles with greater weight and less surface roughness are easily detached, while small, lightweight debris is separated. The effect is even better for removing impurities from drier aggregates.

[0028] In an optional embodiment, to enhance the adhesion effect, the outer surfaces of the second rotating shaft 210 and the third rotating shaft 220 may be provided with a rubber layer to increase the friction between the cotton and linen strips and the rubber layer, while preventing slippage.

[0029] As an alternative implementation, the adhesion part 230 includes a cotton or linen strip or Velcro, and a transmission component; the second rotating shaft 210 and the third rotating shaft 220 are connected by the transmission component; the cotton or linen strip or Velcro is disposed on the surface of the transmission component. Specifically, the transmission component is a conveyor belt (e.g., a belt), and the cotton or linen strip or Velcro with adhesion function can be wound around the second rotating shaft 210 and the third rotating shaft 220 via the conveyor belt. The third rotating shaft 220 is connected to the second rotating shaft 210 via the conveyor belt, and the outer surface of the conveyor belt is connected with the cotton or linen strip or Velcro. This connection method can be pasting, fastening, inlaying, etc. The surface of the linen strip or Velcro can effectively hook onto small, lightweight debris such as paper scraps, wood chips, and lightweight plastics in the recycled aggregate.

[0030] Optionally, the conveyor belt is alternately provided with a soft fiber side and a hard hook side of hook and loop fasteners. The soft fiber side is used to pick up hard and rough debris such as wood chips and paper scraps, while the hard hook side is used to pick up light debris such as strip fibers.

[0031] Alternatively, as another alternative implementation, in order to increase the contact area between the adhesive portion 230 and the material, the third rotating shaft 220 may be configured as a spherical driven shaft.

[0032] This embodiment achieves impurity removal by arranging a rolling cloth belt or Velcro in the small-diameter recycled aggregate flow to adhere small, lightweight impurities in the aggregate. This embodiment can effectively remove lightweight impurities from fine-grained recycled aggregate, improve the quality of recycled aggregate, and facilitate the resource utilization of construction waste.

[0033] In an optional embodiment, the third rotating shaft 220 is positioned above the material conveying section 110, maintaining a certain distance from it. The specific value of this distance can be adjusted according to the material particle size, material flow rate, and content of lightweight impurities. Generally, a distance of 5-10 cm is suitable, ensuring sufficient contact between the fabric strip and the material flow without causing material blockage or wear on the fabric strip (or Velcro) due to excessive proximity. The fabric strip or Velcro rotates under the drive of the driving shaft, while the driven shaft provides support and tension.

[0034] In an optional embodiment, the second rotating shaft 210 is disposed obliquely above one side of the third rotating shaft 220 and is located on the side opposite to the conveying direction of the recycled aggregate to be removed.

[0035] Specifically, to improve the adsorption efficiency of the cloth strip for lightweight impurities in fine-grained recycled aggregate, this embodiment features a specially designed relative arrangement between the rotation direction of the adhesion section 230 and the material conveying direction in the equipment structure. The adhesion section 230 is mounted on the third rotating shaft 220 (driven shaft) and is driven to rotate by the second rotating shaft 210 (drive shaft). The material conveying section 110 is a material belt used to carry and convey the recycled aggregate to be cleaned. (Refer to...) Figure 2 The third rotating shaft 220 (driven shaft) is positioned directly above the material conveyor belt, and the second rotating shaft 210 (drive shaft) is positioned diagonally above and to one side of the third rotating shaft 220, opposite to the conveying direction of the aggregate to be removed and recycled. Figure 2 Taking the orientation as an example, the rotation direction of the first rotating shaft 120 and the second rotating shaft 210 is both set to clockwise, with the direction of the material belt conveying recycled aggregate as the positive direction. The adhesive part 230 is driven to rotate by the drive shaft, and the adhesive part 230 (which is located on the driven shaft) Figure 2 The adhesive part 230 at the lowest point of the driven shaft moves in the opposite direction to the material conveying direction. The adhesive part 230 and the recycled aggregate to be cleaned on the material conveying part 110 are in reverse contact. This arrangement makes the trajectory of the adhesive part 230 "sweep" across the material flow during movement, disturbing the material flow and increasing the chance of light debris being exposed on the surface of the cloth strip. This causes the light debris to detach from the surface of the aggregate and be adsorbed by the adhesive part 230, thus enhancing the adhesion and adsorption effect.

[0036] In an optional embodiment, the adhesion assembly 200 includes a plurality of third rotating shafts 220; the plurality of third rotating shafts 220 are coaxially connected by a connecting rod 500; and a gap is provided between adjacent third rotating shafts 220.

[0037] Specifically, such as Figure 1 and Figure 3As shown, in this embodiment, the adhesion component 200 includes multiple third rotating shafts 220 (driven shafts), and the second rotating shaft 210 is a single active shaft. The material conveying section 110 extends along the direction of material movement, and its width is perpendicular to this direction. The active shaft is arranged parallel to the width of the material conveying section 110. A motor drives the active shaft to rotate, which in turn drives the driven shaft to rotate, thereby causing the adhesion section 230 to rotate. The multiple third rotating shafts 220 are arranged along the width of the material conveying section 110 and fixed to the support by connecting rods 500, forming a whole. Each third rotating shaft 220 has a uniform or non-uniform spacing, forming a "comb"-like structure. The spacing is set according to the particle size distribution of the recycled aggregate, generally controlled between 5 and 10 cm, ensuring that the cloth strip effectively adsorbs impurities without obstructing the material flow. The comb-like structure prevents the entire material channel from being covered by the cloth strip, thus preventing material blockage; the spacing between adjacent third rotating shafts 220 allows for the smooth passage of aggregates with larger particle sizes.

[0038] Optionally, both the second rotating shaft 210 and the third rotating shaft 220 can be fitted with grooves and baffles to prevent the fabric strip from running off-center.

[0039] In an optional embodiment, a collecting component 400 is also included; the collecting component 400 is disposed above the material conveying assembly 100 and below the cleaning component 300, and is used to receive light impurities removed by the cleaning component 300.

[0040] Specifically, the cleaning component 300 is located below the second rotating shaft 210. The cleaning component 300 contacts the surface of the adhesion part 230 and is used to remove light impurities from the adhesion part 230. The cleaning component 300 can be a rotating brush or a fixed scraper structure. During the operation of the adhesion component, light impurities (such as wood chips, plastic scraps, paper scraps, etc.) adhering to its surface are swept by the brush and fall into the collection component 400 below under the action of gravity or wind, achieving centralized collection and discharge of impurities. The collection component 400 can be a dust collection trough, a hopper, or a collection box with a filter screen, etc., located below the cleaning component 300. The width of the collection component 400 can be slightly larger than the width of the adhesion part 230 to ensure that all swept debris can fall into it. The bottom of the collection component 400 has a discharge port for easy periodic cleaning or connection to a subsequent conveying system.

[0041] It should be understood that the collecting component 400 and the cleaning component 300 (such as a brush) can be fixed and supported by an external bracket. Although the external bracket structure is not specifically shown in the accompanying drawings of this embodiment, it is a common mechanical support design in the art and can be adapted to meet actual installation requirements without affecting the completeness and feasibility of this embodiment.

[0042] Optionally, a small negative pressure fan can be added to the collection component 400 to enhance the suction effect on light debris and improve collection efficiency.

[0043] In an optional embodiment, a vibrator is connected to the first rotating shaft 120. Specifically, for fine aggregates with special requirements, they can be air-dried first, and a vibrator can be installed on the material flow belt (i.e., the material conveying section 110). A mild vibrator can be selected. The mild vibration can cause light impurities to agglomerate on the upper layer of the material flow. At the same time, the material flow passes through the adhesion component 200, which can significantly remove impurities from the aggregate.

[0044] This embodiment addresses the problem of the difficulty in removing lightweight impurities from fine aggregates by employing a low-cost, small-scale impurity removal device. This device achieves an impurity removal effect close to that of flotation, thereby improving the quality of recycled fine aggregates.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adhesive impurity removal device, characterized in that, include: Material conveying assembly (100), adhesion assembly (200) and cleaning assembly (300); The material conveying assembly (100) is used to convey recycled aggregate to be cleaned. The material conveying assembly (100) includes a material conveying section (110) and a plurality of first rotating shafts (120), which are connected by transmission through the material conveying section (110). The adhesion component (200) is disposed above the material conveying component (100). The adhesion component (200) includes a second rotating shaft (210), a third rotating shaft (220), and an adhesion part (230). The second rotating shaft (210) and the third rotating shaft (220) are connected in a transmission manner. The second rotating shaft (210) is disposed obliquely above the third rotating shaft (220). The adhesion part (230) is wrapped around the second rotating shaft (210) and the third rotating shaft (220). The rotation direction of the second rotating shaft (210) is the same as the rotation direction of the first rotating shaft (120). The adhesion part (230) wrapped around the third rotating shaft (220) can make reverse contact with the recycled aggregate to be cleaned on the material conveying component (110) to adhere the light impurities in the recycled aggregate to be cleaned. The cleaning component (300) contacts the adhesive portion (230) to remove light impurities on the adhesive portion (230).

2. The adhesion and impurity removal device according to claim 1, characterized in that, The adhesive part (230) includes a strip of cotton or linen fabric; The second rotating shaft (210) and the third rotating shaft (220) are connected by the cotton and linen strip.

3. The adhesion and impurity removal device according to claim 2, characterized in that, Both the second rotating shaft (210) and the third rotating shaft (220) are provided with a rubber layer on their exterior.

4. The adhesion and impurity removal device according to claim 1, characterized in that, The adhesive part (230) includes a strip of cotton or linen or Velcro, and a transmission component; The second rotating shaft (210) and the third rotating shaft (220) are connected by the transmission component. The cotton or linen strip or the Velcro is applied to the surface of the transmission component.

5. The adhesion and impurity removal device according to claim 1, characterized in that, There is a gap between the third rotating shaft (220) and the material conveying unit (110).

6. The adhesion and impurity removal device according to claim 1, characterized in that, The adhesion assembly (200) includes a plurality of the third rotation shafts (220); Several of the third rotating shafts (220) are coaxially connected by connecting rods (500); A gap is provided between adjacent third rotation axes (220).

7. The adhesion and impurity removal device according to claim 1, characterized in that, The second rotating shaft (210) is located obliquely above one side of the third rotating shaft (220) and on the side opposite to the conveying direction of the recycled aggregate to be removed.

8. The adhesion and impurity removal device according to claim 1, characterized in that, The material conveying section (110) is configured as a conveyor belt, and the material conveying section (110) is used to place recycled aggregate to be cleaned.

9. The adhesion and impurity removal device according to claim 1, characterized in that, It also includes collection components (400); The collecting component (400) is disposed above the material conveying assembly (100) and below the cleaning component (300), and is used to receive the light impurities removed by the cleaning component (300).

10. The adhesion and impurity removal device according to claim 1, characterized in that, A vibrator is connected to the first rotating shaft (120).

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