A new double-deck screening machine
The new double-layer screening machine, which integrates a vibrating screen and an air classifier, solves the problem of redundancy in the traditional step-by-step processing technology, and achieves efficient, compact and low-cost material sorting, improving production efficiency and sorting accuracy, and reducing material loss and secondary pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 张廷峰
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-26
AI Technical Summary
In the existing technology, the step-by-step processing of two independent devices, the vibrating screen and the air classifier, results in a complex system, large footprint, high cost, low efficiency, and may introduce material loss and secondary pollution, making it difficult to meet the modern industrial demand for high efficiency, compactness, and low cost.
A novel double-layer screening machine is designed, integrating a vibrating screen and an air separator into one unit. The machine uses a motor-driven screen for size screening and air separation, achieving automated and seamless material handling, reducing intermediate transfer links, and employing a protective shell and a double-layer conveyor belt for the orderly collection and transportation of materials.
It reduces the equipment footprint, lowers equipment costs, improves material handling efficiency and sorting accuracy, reduces dust spillage, lowers the labor intensity of workers, and realizes automated, clean collection and directional conveying of materials.
Smart Images
Figure CN224405768U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening machine technology, and in particular to a novel double-layer screening machine. Background Technology
[0002] Screening machines, as key material handling equipment, play an indispensable role in numerous industrial fields such as grain processing, mining, chemical industry, building materials, and resource recycling. Their core function is to separate mixtures into components of different specifications or types based on differences in the physical properties of materials, such as size, shape, and density, thereby achieving the purification, grading, or removal of impurities from raw materials. With the continuous improvement of industrial automation, the requirements for the processing efficiency, sorting accuracy, functional integration, and floor space of screening equipment are becoming increasingly stringent, driving the continuous innovation and development of related technologies.
[0003] In existing material sorting processes, when it is necessary to separate materials simultaneously based on both size and density, a step-by-step processing approach is typically used. The specific process is as follows: First, the raw material is fed into a separate vibrating screen via a feeding device. This vibrating screen uses a motor-driven eccentric block or vibrator to generate high-frequency vibration in the screen box with the screen mesh. The material is thrown up, stratified, and moves forward on the screen surface. Material smaller than the screen openings passes through the screen and becomes the undersize, while material larger than the screen openings remains on the screen surface and becomes the oversize. Subsequently, the material that has undergone preliminary size screening (usually the undersize) is collected and then transferred manually or via conveyor belt to another separate air classifier. The air classifier uses a fan to generate an airflow at a specific velocity, blowing the falling material through the air classifier chamber. Utilizing the difference in suspension velocity between different materials, lighter impurities with lower density are blown away, while heavier materials with higher density sink due to gravity and are collected, thus completing the second stage.
[0004] However, the traditional process flow described above, which relies on a combination of two independent devices—a vibrating screen and an air separator—has significant limitations. The most prominent problem is the system's redundancy and discontinuous process flow. Requiring two completely independent machines not only multiplies the floor space required in the production workshop, significantly increasing the company's site and equipment procurement costs, but more importantly, it breaks up a potentially continuous sorting task into two independent processes requiring material transfer. This discontinuity in the process not only drastically reduces overall production efficiency and increases manual intervention and additional conveying steps, but it may also introduce secondary contamination or cause material loss during material transfer. This non-integrated solution is no longer suitable for the modern industrial production trend towards high efficiency, compactness, and low-cost intensive development. Therefore, a novel double-layer screening machine is proposed to address these issues. Utility Model Content
[0005] To overcome the above deficiencies, the present utility model provides a new type of double-layer screening machine, aiming to improve the drawbacks of the traditional process relying on two independent devices, namely a vibrating screen and an air separator, which lead to a cumbersome system, large floor space, and high costs. The material transfer link disrupts the production process, not only reducing efficiency but also potentially introducing secondary pollution and losses. Such a non-integrated solution is difficult to meet the requirements of modern industry for high efficiency, compactness, and low cost.
[0006] To achieve the above object, the present utility model provides the following technical solution: A new type of double-layer screening machine includes a chassis. On the upper surface of the chassis, there is a fixedly connected support one. Above the support one, there is a conveyor belt one. On the upper surface of the support one, there is a fixedly connected support rod. On the upper surface of the support rod, there is a fixedly connected support two. On the upper surface of the support two, there is a conveyor belt two; On one side of the upper surface of the support two, there is a fixedly connected support three;
[0007] A screening mechanism, the screening mechanism includes a support four fixedly connected to one side of the support three. On the upper surface of the support four, there is a fixedly connected feed hopper. Inside the inner wall of the support four, there is a fixedly connected slide rail box. Inside the slide rail box, there is a slidably connected support frame. On the upper surface of the support frame, there is a fixedly connected installation frame. Inside the installation frame, there is a fixedly connected lower hopper two. Above the lower hopper two, there is a movably connected screen;
[0008] A vibration drive mechanism and an air separation mechanism. The vibration drive mechanism is arranged on the upper surface of the support three, and the air separation mechanism is arranged on one side of the inner wall of the support four.
[0009] As a further description of the above technical solution:
[0010] The vibration drive mechanism includes a motor two fixed on the upper surface of the support three. The output end of the motor two is connected to the lower hopper two through a crank and connecting rod.
[0011] As a further description of the above technical solution:
[0012] The air separation mechanism includes a lower hopper one fixed on the inner wall of the support four and below the slide rail box, and a blower fixed on the lower surface of the support three. The output end of the blower is connected to the lower hopper one through a connecting pipe.
[0013] As a further description of the above technical solution:
[0014] It further includes a conveyor drive mechanism. The conveyor drive mechanism includes a motor one fixed on the lower surface of the support three. The output end of the motor one is connected to the conveyor belt one and the conveyor belt two through multiple drive belts.
[0015] As a further description of the above technical solution:
[0016] A flow guide plate is provided on one side of the second support, and the flow guide plate is located on the upper side of the first conveyor belt. A protective shell is fixedly connected to the outer wall of the first hopper, and the lower surface of the protective shell is located above the second conveyor belt. The outlet of the screen is located at the inlet on one side of the protective shell.
[0017] As a further description of the above technical solution:
[0018] The outer wall of the support frame is rotatably connected to a limiting wheel, which is located inside the slide rail box.
[0019] As a further description of the above technical solution:
[0020] Multiple auxiliary wheels are provided in the middle of both the first and second conveyor belts; a diversion hopper is provided on one side of the first discharge hopper and is connected to it.
[0021] As a further description of the above technical solution:
[0022] The protective shell is fixedly connected to one of the outer walls of the hopper, opposite to the connection position of the connecting pipe.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, the material is first screened by size using a screen driven by a motor and a crank connecting rod, separating out materials that do not meet the size requirements. The material that passes through the screen immediately enters the feed hopper below, where it is air-separated by an airflow provided by a blower, separating light impurities based on differences in material density. This design solves the problem in traditional production where two separate devices, a vibrating screen and an air separator, are needed to complete the screening and impurity removal operations. This not only reduces the equipment footprint and lowers equipment costs, but also improves the overall material processing efficiency and sorting accuracy.
[0025] 2. In this utility model, an automated material transfer system consisting of a protective shell, double-layer conveyor belts, and a guide plate is used to achieve the orderly collection and transfer of materials after screening. Larger materials, after being separated by the screen, fall onto the upper conveyor belt under the guidance of the sealed protective shell. This effectively suppresses dust spillage and improves the working environment. The material is then conveyed to the end, where it is redirected by the guide plate to fall onto the lower conveyor belt for centralized output. This solves the problem of traditional screening equipment requiring manual collection or multiple independent conveying devices for material transfer at each outlet, thus achieving automated, clean collection and directional conveying of oversize material, further reducing the labor intensity of workers. Attached Figure Description
[0026] Figure 1This is a three-dimensional structural diagram of a novel double-layer screening machine proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of a portion of the support structure of a novel double-layer screening machine proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the protective shell structure of a novel double-layer screening machine proposed in this utility model;
[0029] Figure 4 This is a schematic diagram of the inlet bucket structure of a novel double-layer screening machine proposed in this utility model.
[0030] Legend:
[0031] 1. Base frame; 2. Support bracket one; 3. Conveyor belt one; 4. Support rod; 5. Support bracket two; 6. Diversion plate; 7. Conveyor belt two; 8. Auxiliary wheel; 9. Support bracket three; 10. Support bracket four; 11. Diversion hopper; 12. Motor one; 13. Transmission belt; 14. Feed hopper; 15. Protective shell; 16. Discharge hopper one; 17. Slide rail box; 18. Support frame; 19. Limiting wheel; 20. Mounting frame; 21. Discharge hopper two; 22. Screen; 23. Motor two; 24. Crank connecting rod; 25. Fan; 26. Connecting pipe. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Reference Figure 1 - Figure 4 This utility model provides an embodiment of a novel double-layer screening machine, comprising a base frame 1 serving as the load-bearing and stabilizing foundation for the entire machine. A support bracket 2 for supporting the lower conveying mechanism is fixedly connected to the upper surface of the base frame 1. A conveyor belt 3 for conveying finished products is disposed above the support bracket 2. A support rod 4 for constructing a hierarchical structure is also fixedly connected to the upper surface of the support rod 4. A second support bracket 5 for supporting the upper conveying mechanism is fixedly connected to the upper surface of the second support bracket 5. A second conveyor belt 7 for conveying the screened material is disposed on the upper surface of the second support bracket 5. A third support bracket 9, serving as a mounting platform for the main functional components, is fixedly connected to one side of the upper surface of the second support bracket 5.
[0034] The screening mechanism includes a support four 10 fixedly connected to one side of the support three 9. The upper surface of the support four 10 is fixedly connected to a feed hopper 14 for guiding materials into the feed hopper. The inner wall of the support four 10 is fixedly connected to a slide rail box 17 for providing reciprocating motion guidance for the vibrating components. The slide rail box 17 is slidably connected to a support frame 18. The upper surface of the support frame 18 is fixedly connected to a mounting frame 20. The inside of the mounting frame 20 is fixedly connected to a discharge hopper 21. The upper side of the discharge hopper 21 is movably connected to a screen 22 for separating materials by size.
[0035] The device includes a vibration drive mechanism and an air separation mechanism. The vibration drive mechanism is located on the upper surface of the support 3 9 to drive the screen 22 to vibrate. The air separation mechanism is located on one side of the inner wall of the support 4 10 to separate impurities from the screened material. The vibration drive mechanism specifically includes a motor 23 fixed on the upper surface of the support 3 9. The output end of the motor 23 is connected to the feed hopper 21 through a crank connecting rod 24 to efficiently convert the rotational motion of the motor into the reciprocating linear motion of the screen box. The air separation mechanism specifically includes a feed hopper 16 fixed on the inner wall of the support 4 10 and located below the slide rail box 17, and a fan 25 fixed on the lower surface of the support 3 9. The output end of the fan 25 is connected to the feed hopper 16 through a connecting pipe 26 to stably deliver the separating airflow into it. The device also includes a conveyor drive mechanism, which includes a motor 12 fixed on the lower surface of the support 3 9. The output end of the motor 12 is connected to both the conveyor belt 3 and the conveyor belt 7 through multiple transmission belts 13 to drive them to run synchronously.
[0036] Specifically, during operation, motor 23 drives hopper 21 and screen 22 to reciprocate at high frequency along the guide rail box 17 via crank connecting rod 24, performing initial size screening of the material entering from feed hopper 14. Undersized material falls directly into the lower feed hopper 16 and is immediately subjected to airflow from blower 25 for impurity removal. Simultaneously, oversized material is automatically guided and conveyed to the upper conveyor belt 7. The entire double-layer conveyor system is uniformly driven by a single motor 12 via transmission belt 13, achieving automated and layered conveying of oversized material and the final product. This structure achieves seamless integration of screening and airflow processes, eliminating intermediate transfer links, simplifying the drive system, making the overall structure more compact, and the material handling process more coherent and efficient.
[0037] Reference Figure 1 - Figure 4A guide plate 6 for guiding material flow is provided on one side of the support frame 2 5. The guide plate 6 is positioned above the conveyor belt 1 3 to ensure that the material falling from the upper conveyor belt can be accurately transferred to the lower conveyor belt. A protective shell 15 for guiding flow and preventing dust is fixedly connected to the outer wall of the discharge hopper 16. The lower surface of the protective shell 15 is suspended above the conveyor belt 2 7, and the outlet of the screen 22 is connected to the inlet on one side of the protective shell 15 to form a closed material channel. The outer wall of the support frame 18 is provided with multiple limiting wheels 19 by a rotating connection to limit the flow of materials. The position wheel 19 is rolled inside the slide rail box 17 to reduce sliding friction and ensure the smooth operation of the vibration mechanism; multiple auxiliary wheels 8 are provided in the middle of the conveying paths of conveyor belt 3 and conveyor belt 7 to support the belt body and prevent the conveyor belt from sagging due to the weight of the material; a guide hopper 11 for discharging the material after air separation is provided on one side of the discharge hopper 16, and the guide hopper 11 is connected to the internal space of the discharge hopper 16; the protective shell 15 is fixedly connected to the outer wall of the discharge hopper 16 and is set opposite to the connection position of the connecting pipe 26 on the discharge hopper 16.
[0038] Specifically, the low-resistance sliding assembly, consisting of the support frame 18 and the limiting wheel 19, ensures that the screening mechanism can vibrate smoothly and efficiently. After screening, larger materials enter the sealed protective shell 15 from the screen 22 outlet, effectively preventing dust spillage. The materials are then guided and fall onto the upper conveyor belt 7. After being conveyed by the upper conveyor belt 7, the materials are guided by the diversion plate 6 and orderly turned and transferred to the lower conveyor belt 3 for unified collection. Throughout the process, the auxiliary wheel 8 ensures the smooth operation of the two conveyor belts. Qualified materials after air separation are discharged through an independent diversion hopper 11.
[0039] Working principle: When the device is needed, the material enters through the feed hopper 14 and is evenly spread on the screen 22. At this time, the motor 23 fixed on the bracket 3 9 starts, and drives the entire feed hopper 21 and the screen 22 inside through the crank connecting rod 24 mechanism, causing the limiting wheel 19 on the lower side of the support frame 18 to perform high-frequency reciprocating limiting vibration in the slide rail box 17; under the action of vibration, the material with a size smaller than the aperture of the screen 22 passes through the screen holes and falls into the feed hopper 16 below; while the material with a larger size remains on the screen surface and moves towards the outlet end along the screen surface inclination angle.
[0040] Secondly, the material falling into the discharge hopper 16 will immediately be subjected to a strong airflow from the blower 25 through the connecting pipe 26. According to the difference in material density and weight, lighter impurities will be blown up and carried away by the airflow and discharged from the guide hopper 11, while heavier qualified materials will continue to fall due to their own gravity and will eventually be discharged and collected through the guide hopper 11 on the side of the discharge hopper 16.
[0041] Meanwhile, larger materials discharged from the screen 22 outlet are accurately placed onto the upper conveyor belt 7 under the constraint of the protective shell 15. The conveyor belt 7, driven by the motor 12 through the transmission belt 13, transports these materials to the other end of the equipment. Guided by the diversion plate 6, the materials are turned and fall onto the lower conveyor belt 3.
[0042] Finally, conveyor belt 3 transports these materials to designated locations, thus completing the entire process of screening, air separation, and material collection.
[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A novel double-layer screening machine, characterized in that, Includes a base frame (1), on the upper surface of the base frame (1) a bracket (2) is fixedly connected, above the bracket (2) a conveyor belt (3) is provided, on the upper surface of the bracket (2) a support rod (4) is fixedly connected, on the upper surface of the support rod (4) a bracket (5) is fixedly connected, on the upper surface of the bracket (5) a conveyor belt (7) is provided; on one side of the upper surface of the bracket (5) a bracket (9) is fixedly connected. The screening mechanism includes a support four (10) fixedly connected to one side of the support three (9), a feeding hopper (14) fixedly connected to the upper surface of the support four (10), a slide rail box (17) fixedly connected to the inner wall of the support four (10), a support frame (18) slidably connected inside the slide rail box (17), an installation frame (20) fixedly connected to the upper surface of the support frame (18), a discharge hopper two (21) fixedly connected inside the installation frame (20), and a screen (22) movably connected to the upper side of the discharge hopper two (21). The vibration drive mechanism and the air separation mechanism are provided. The vibration drive mechanism is located on the upper surface of the support three (9), and the air separation mechanism is located on one side of the inner wall of the support four (10).
2. The novel double-layer screening machine according to claim 1, characterized in that: The vibration drive mechanism includes a second motor (23) fixed on the upper surface of the third bracket (9), and the output end of the second motor (23) is connected to the second hopper (21) through a crank connecting rod (24).
3. The novel double-layer screening machine according to claim 1, characterized in that: The air separation mechanism includes a first hopper (16) fixed to the inner wall of the fourth bracket (10) and located on the lower side of the slide box (17), and a fan (25) fixed to the lower surface of the third bracket (9). The output end of the fan (25) is connected to the first hopper (16) through a connecting pipe (26).
4. A novel double-layer screening machine according to claim 1, characterized in that: It also includes a transmission drive mechanism, which includes a motor (12) fixed on the lower surface of the bracket (9). The output end of the motor (12) is connected to the transmission belt (3) and the transmission belt (7) through multiple transmission belts (13).
5. A novel double-layer screening machine according to claim 3, characterized in that: A flow guide plate (6) is provided on one side of the second support (5). The flow guide plate (6) is located on the upper side of the first conveyor belt (3). A protective shell (15) is fixedly connected to the outer wall of the first hopper (16). The lower surface of the protective shell (15) is located above the second conveyor belt (7). The outlet of the screen (22) is located at the inlet on one side of the protective shell (15).
6. A novel double-layer screening machine according to claim 1, characterized in that: The outer wall of the support frame (18) is rotatably connected to a limiting wheel (19), which is located inside the slide box (17).
7. A novel double-layer screening machine according to claim 5, characterized in that: Multiple auxiliary wheels (8) are provided in the middle of both the first conveyor belt (3) and the second conveyor belt (7); a diversion hopper (11) is provided on one side of the first discharge hopper (16) and communicates with it.
8. A novel double-layer screening machine according to claim 5, characterized in that: The protective shell (15) is fixedly connected to the outer wall of the hopper (16) and is opposite to the connection position of the connecting pipe (26).