Low-moisture material wind multi-stage classifying device

Abstract

The application provides a low-moisture material wind multi-stage grading device, which comprises a discharge port and a plurality of material collecting ports, a wind selection assembly and a screen assembly. The discharge port is used for outputting the material. The plurality of material collecting ports are arranged along the direction in which the material is output from the discharge port and are used for collecting the material. The sorting device is arranged correspondingly to the material collecting port and is used for air selecting the material output from the discharge port and conveying the screened material to the material collecting port. The screen assembly is arranged in each of the plurality of material collecting ports and is used for secondary screening of the material conveyed into the material collecting port. In this embodiment, a plurality of wind selection assemblies are arranged in sequence along the direction in which the material is output from the discharge port, and the wind selection assemblies with different flow rates are used to act on the material output from the discharge port, so as to realize accurate and efficient grading of the material. At the same time, the screen assembly arranged at the discharge port can perform secondary screening on the material blown into the material collecting port by the wind selection assembly, thereby ensuring more accurate grading of the material.

Description

Technical Field

[0001] This application relates to the field of multi-stage wind separation technology, specifically to a wind-powered multi-stage classification device for low-moisture-content materials. Background Technology

[0002] The increasing demand for mineral resources driven by the national economy has brought us valuable mineral products, but also generated a large amount of solid waste, such as tailings. Currently, the most effective method for consuming and disposing of tailings is in-situ backfilling, which involves transporting the tailings to the mined-out area for solidification using backfilling technology. However, based on engineering experience, tailings backfilling can only consume 30% to 50% of the total, leaving a significant portion untreated. Therefore, comprehensive utilization of tailings has become a research hotspot in the mining and building materials industries. Due to the characteristics of tailings of different particle sizes used in mine backfilling and building materials applications, the current mainstream approach is "coarse sand sold externally (for building materials), fine sand used for backfilling." Efficient classification and precise gradation are key to steadily implementing this approach. Different gradations can produce different types of building materials, and correct gradation can achieve efficient cemented backfilling. Existing classification or screening devices can only achieve classification within a single range for materials with high or no moisture content. To achieve multi-stage classification at one time, a combined approach or multiple devices connected in series is required, resulting in a complex process, large footprint, and high operating costs. Utility Model Content

[0003] In view of the technical problems existing in the background art, this application provides a multi-stage air classification device for low moisture content materials. By sequentially setting multiple sets of air classification components along the direction of material output from the outlet, multiple air classification components with different flow rates are used to act on the material output from the outlet to achieve accurate and efficient classification of the material.

[0004] This application provides a wind-driven multi-stage grading device for low-moisture-content materials, comprising: The discharge port is used to output materials; Multiple receiving ports are provided, which are arranged along the direction of material output from the discharge port, for collecting materials. Multiple air separation components are provided, each corresponding to the receiving port, for air separation of the material output from the discharge port and conveying the screened material to the receiving port; Multiple screen assemblies are provided in multiple receiving ports for secondary screening of materials conveyed to the receiving ports.

[0005] Furthermore, in this embodiment, the screen assembly includes a screen, one end of which is fixedly disposed at the receiving port, and the other end of which extends along the blowing direction of the air separation assembly. The other end of the screen is inclined and forms a blocking structure for blocking materials.

[0006] Furthermore, in this embodiment, the screen assembly further includes a vibrating element connected to the screen for driving the screen to vibrate.

[0007] Furthermore, in this embodiment, an accumulation detection component is also included. The accumulation detection component is electrically connected to the sorting component and is used to detect the accumulation of materials on the screen component.

[0008] Furthermore, in this embodiment, the stacking detection component is a visual inspection device.

[0009] Furthermore, in this embodiment, a conveying device is also included, which is used to transport the material collected at the receiving port.

[0010] Furthermore, in this embodiment, an end receiving port is also included. The end receiving port is located at the end of the direction in which the material is output from the outlet, and is used to collect the material that has not been air-separated.

[0011] Furthermore, in this embodiment, a weighing device is also included. The weighing device is placed inside the end receiving port and electrically connected to the air separation component. The weighing device is used to weigh the material collected inside the end receiving port.

[0012] Furthermore, in this embodiment, a protective cutting mesh is also included, which is disposed at the discharge port and used to cut the material output from the discharge port.

[0013] Furthermore, in this embodiment, the wind separation component is a high-speed fan.

[0014] Beneficial Effects: This application provides a multi-stage air-powered grading device for low-moisture materials, including a discharge port, multiple receiving ports, an air-separating assembly, and a screen assembly. The discharge port is used to output material; multiple receiving ports are arranged along the direction of material output from the discharge port for collecting material; a sorting device is correspondingly arranged with the receiving ports to perform air separation on the material output from the discharge port and transport the screened material to the receiving ports; each of the multiple receiving ports is equipped with a screen assembly for secondary screening of the material transported to the receiving ports. In this embodiment, by sequentially arranging multiple sets of air-separating assemblies along the direction of material output from the discharge port, multiple air-separating assemblies with different flow rates act on the material output from the discharge port to achieve precise and efficient grading of the material. Simultaneously, the screen assembly at the discharge port can perform secondary screening of the material blown into the receiving ports by the air-separating assembly, thereby ensuring more accurate grading of the material.

[0015] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0017] Figure 1 This application provides a schematic diagram of the structure of a wind-driven multi-stage grading device for low-moisture materials. Figure 2 This application provides a logic diagram of a wind-driven multi-stage grading device for low-moisture-content materials.

[0018] Explanation of reference numerals in the attached figures: 10. Discharge port; 110. Protective plate cutting mesh; 20. Receiving port; 210. Stacking detection assembly; 220. Conveying device; 30. Air separator components; 40. Screen assembly; 410. Screen; 420. Vibrating component; 50. End receiving port; 510. Weighing device. Detailed Implementation

[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0020] Unless otherwise defined, 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; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0025] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0026] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0027] The increasing demand for mineral resources driven by national economic development has brought us valuable mineral products, but also generated a large amount of solid waste, such as tailings. Currently, the most effective method for consuming and disposing of tailings is in-situ backfilling, which involves transporting the tailings to the mined-out area for solidification using backfilling technology. However, based on engineering experience, tailings backfilling can only consume 30% to 50% of the total, leaving a significant portion untreated. Therefore, comprehensive utilization of tailings has become a research hotspot in the mining and building materials industries. Due to the characteristics of tailings of different particle sizes used in mine backfilling and building materials applications, the current mainstream approach is "coarse sand sold externally (for building materials), fine sand used for backfilling." Efficient classification and precise gradation are key to steadily implementing this approach. Different gradations can produce different types of building materials, and correct gradation can achieve efficient cemented backfilling. Therefore, only by efficiently classifying tailings can the problem of tailings stockpiling be solved as much as possible.

[0028] Existing grading or screening devices can only achieve grading within a single range for materials with high or no moisture content. To achieve multi-stage grading at one time, a combination or multiple devices in series is required, which results in a complex process, large footprint, and high operating costs.

[0029] To address the technical problem that existing grading or screening devices can only achieve grading within a single range for materials with high or no moisture content, this application provides a multi-stage air-driven grading device for low-moisture materials. By sequentially arranging multiple sets of air-separating components along the direction of material output from the outlet, multiple air-separating components with different flow rates act on the material output from the outlet to achieve accurate and efficient grading of the material.

[0030] Please refer to Figure 1 , Figure 1 This application provides a schematic diagram of the structure of a wind-driven multi-stage grading device for low-moisture materials.

[0031] like Figure 1As shown in the illustration, this application provides a multi-stage air-powered grading device for low-moisture materials, including a discharge port 10, multiple receiving ports 20, an air-separating assembly 30, and a screen assembly 40. The discharge port 10 is used to output materials; the multiple receiving ports 20 are arranged along the direction of material output from the discharge port 10 and are used to collect materials; a sorting device is correspondingly arranged with the receiving ports 20 and is used to perform air separation on the materials output from the discharge port 10 and transport the screened materials to the receiving ports 20; each of the multiple receiving ports 20 is equipped with a screen assembly 40 for secondary screening of the materials transported to the receiving ports 20. In this embodiment, by sequentially arranging multiple sets of air-separating assemblies 30 along the direction of material output from the discharge port 10, multiple air-separating assemblies 30 with different flow rates act on the materials output from the discharge port 10 to achieve precise and efficient grading of the materials. Simultaneously, the screen assembly 40 located at the discharge port 10 can perform secondary screening on the materials blown into the receiving ports 20 by the air-separating assembly 30, thereby ensuring more accurate grading of the materials.

[0032] For example, in this embodiment, after the material is output, it falls freely in the vertical direction under the action of gravity. During the free fall, since different particle sizes have different wind resistance, when the material passes through multiple wind separation components 30 with different wind forces, the wind separation components 30 with different wind forces can blow different particle sizes into the corresponding receiving port 20 and fall into the screen component 40 inside the receiving port 20. At this time, the screen component 40 performs secondary screening of the material, so that only the material that meets the requirements can be truly stored in the receiving port 20, thereby achieving accurate and efficient grading of different particle sizes.

[0033] In some embodiments, the screen assembly 40 includes a screen 410, one end of which is fixedly disposed at the receiving port 20, and the other end of which extends along the blowing direction of the air separation assembly 30. The other end of the screen 410 is inclined and forms a blocking structure for blocking materials. It can be understood that, in this embodiment, the upwardly inclined design of the end of the screen 410 cleverly forms a physical barrier (blocking structure). The blocking structure can prevent materials from flying directly out of the screen 410 range from the end under the action of airflow or inertia, ensuring that the materials leave the screen 410 area in a controlled manner.

[0034] In some embodiments, the screen assembly 40 further includes a vibrating element 420 connected to the screen 410 for driving the screen 410 to vibrate. It is understood that in this embodiment, the vibrating element 420 drives the screen 410 to achieve periodic vibration, thereby preventing material from clogging the screen holes of the screen 410 and ensuring that the material can pass smoothly through the screen 410.

[0035] like Figure 2As shown, in some embodiments, an accumulation detection component 210 is also included. The accumulation detection component 210 is electrically connected to the sorting component and is used to detect the accumulation of material on the screen assembly 40. It is understood that in this embodiment, the accumulation detection component 210 detects the accumulation of material on the screen assembly 40 in real time. When the accumulation of material on the screen assembly 40 exceeds a preset value, the device determines that the airflow of the air separation component 30 is too strong and automatically reduces the airflow of the air separation component 30, thereby reducing the output of coarse particles and controlling the output material to be within the target range.

[0036] In some embodiments, the accumulation detection component 210 is a visual inspection device. In this embodiment, the visual inspection device obtains the accumulation status of materials on the screen component 40 by using image information from the screen component 40 and performing visual algorithm analysis on the obtained graphic information.

[0037] In some embodiments, such as Figure 1 As shown, it also includes a conveying device 220, which is used to transport the material collected by the receiving port 20. In this embodiment, the conveying device 220 is integrated inside the receiving port 20, so that the material handling process of the entire system can achieve full-link automated control.

[0038] In some embodiments, such as Figure 1 As shown, it also includes an end receiving port 50, which is located at the end of the direction in which the material is output from the discharge port 10. It is used to collect the material that has not been air-separated. It can be understood that in this embodiment, the end receiving port 50 is located directly below the discharge port 10. After the material output from the discharge port 10 passes through multiple air-separating components 30, there is still some material that has not been air-separated. The end receiving port 50 collects this material that has not been air-separated, so as to facilitate subsequent recirculation processing.

[0039] In some embodiments, such as Figure 2 As shown, it also includes a weighing device 510, which is placed inside the end receiving port 50 and electrically connected to the air separation component 30. The weighing device 510 is used to weigh the weight of the material collected in the end receiving port 50. In this embodiment, the weighing device 510 detects the material that has not been air separated collected in the end receiving port 50. When the weighing device 510 detects that the increase in the amount of material that has not been air separated collected in the end receiving port 50 per unit time reaches a preset value, the air force of the air separation component 30 is adjusted to eliminate the possibility of fine particles being missed.

[0040] In some embodiments, such as Figure 1As shown, it also includes a baffle plate cutting net 110, which is installed at the discharge port 10 and is used to cut the material output from the discharge port 10. It can be understood that in this embodiment, a baffle plate cutting net 110 is provided at the discharge port 10. The baffle plate cutting net 110 can perform the first cutting process on the sticky material, reduce the impact of material agglomeration on wind classification, and avoid classification failure.

[0041] In some embodiments, the air classifier 30 is a high-speed fan. It is understood that when the material output from the outlet 10 passes through multiple high-speed fans in sequence, the material is continuously in a high-speed wind field. The high wind speed can accelerate the evaporation of moisture contained in the material, further reduce the moisture content of the material, and improve the classification efficiency and the quality of the output.

[0042] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A multi-stage wind-driven grading device for low-moisture-content materials, characterized in that, include: The discharge port is used to output materials; Multiple receiving ports are provided, which are arranged along the direction of material output from the discharge port, for collecting materials. Multiple air separation components are provided, each corresponding to the receiving port, for air separation of the material output from the discharge port and conveying the screened material to the receiving port; Multiple screen assemblies are provided in multiple receiving ports for secondary screening of materials conveyed to the receiving ports.

2. The wind-driven multi-stage grading device for low-moisture materials according to claim 1, characterized in that, The screen assembly includes a screen, one end of which is fixedly disposed at the receiving port, and the other end of which extends along the blowing direction of the air separation assembly. The other end of the screen is inclined and forms a blocking structure for blocking materials.

3. The wind-driven multi-stage grading device for low-moisture materials according to claim 2, characterized in that, The screen assembly also includes a vibrating element connected to the screen for driving the screen to vibrate.

4. The wind-driven multi-stage grading device for low-moisture materials according to claim 1, characterized in that, It also includes an accumulation detection component, which is electrically connected to the air separation component and is used to detect the accumulation of material on the screen component.

5. The wind-driven multi-stage grading device for low-moisture materials according to claim 4, characterized in that, The stacking detection component is a visual inspection device.

6. The wind-driven multi-stage grading device for low-moisture materials according to claim 1, characterized in that, It also includes a conveying device for transporting the material collected at the receiving port.

7. The wind-driven multi-stage grading device for low-moisture materials according to claim 1, characterized in that, It also includes an end receiving port, which is located at the end of the direction in which the material is output from the outlet, and is used to collect material that has not been air-separated.

8. The wind-driven multi-stage grading device for low-moisture materials according to claim 7, characterized in that, It also includes a weighing device, which is placed inside the end receiving port and electrically connected to the air separation component. The weighing device is used to weigh the material collected inside the end receiving port.

9. The wind-driven multi-stage grading device for low-moisture materials according to claim 1, characterized in that, It also includes a protective cutting mesh, which is installed at the discharge port and used to cut the material output from the discharge port.

10. The wind-driven multi-stage grading device for low-moisture materials according to claim 1, characterized in that, The air separation component is a high-speed fan.

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