A smelting feedstock pre-processor
By using a gravity-driven circular screen and staggered guide plates, the design solves the problems of high cost and large space occupation of traditional screening equipment, achieving efficient, compact, and low-cost raw material pretreatment, and improving screening accuracy and production continuity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG TONGDA VACUUM EQUIP CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-19
AI Technical Summary
Existing rotary drum screening solutions rely on dedicated drive systems, resulting in high equipment purchase and maintenance costs, large space occupancy, and difficulty in adapting to narrow spaces or compact production lines.
It adopts a gravity-driven circular screen structure, which uses the gravity of the molten raw materials to achieve natural sliding for particle size classification and screening. It integrates built-in screening functions, abandons the traditional power-driven mode, and combines staggered guide plates to extend the screening path. The arc length parameter design is optimized to ensure that the material slides in a dispersed manner.
Significantly reduces equipment costs and maintenance burden, enhances equipment adaptability in compact production lines, improves screening efficiency and precision, achieves seamless integration of screening and washing, reduces equipment footprint, and increases production efficiency.
Smart Images
Figure CN224371986U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of raw material processing technology, specifically relating to a pre-processor for smelting raw materials. Background Technology
[0002] The processing of raw materials for smelting requires multiple pretreatment steps, including crushing and grinding, sorting and selection, and impurity removal soaking. Crushing and grinding involves crushing large pieces of raw material to increase the reaction area, sorting and selection removes impurities and classifies them according to their composition and specifications, and impurity removal soaking removes impurities such as oxides from the metal surface through acid and alkali solutions. These steps work together to ensure the purity of the raw materials, laying the foundation for subsequent smelting.
[0003] In related technology (Chinese Patent No. CN221086258U), a screening device and a pretreatment device for tantalum-niobium smelting raw materials are disclosed, including: a screen, a rotating shaft support fixed on the surface of the screen, the rotating shaft support fixed on the surface of the rotating shaft, the two ends of the rotating shaft being rotatably connected to shaft holes opened on the surface of a support plate, a pull rod fixed at the bottom end of the support plate, a return spring sleeved on the surface of the pull rod, the bottom end of the return spring abutting against the top end of the support, the top end of the return spring abutting against the bottom end of the support plate, the bottom end of the pull rod being movably inserted into a pull rod hole opened on the surface of the support, a connecting plate fixed at the bottom end of the pull rod, and a pull-out mechanism provided at the bottom end of the connecting plate; the beneficial effect is that the repeated oscillation of the support plate is transmitted to the rotating shaft support through the rotating shaft, and finally to the screen through the rotating shaft support. Under the oscillation of the screen, the material blocked in the screen mesh is shaken out, thereby achieving the effect of preventing the screen mesh from being blocked and causing a decrease in screen efficiency.
[0004] While existing rotary drum screening solutions can achieve pretreatment screening of smelting raw materials, they rely on a dedicated drive system to rotate the drum, which has significant technical limitations: First, additional power components such as motors and transmission mechanisms are required, leading to a significant increase in equipment purchase and maintenance costs; second, the drive system requires a large installation space, making it difficult to adapt to narrow spaces or compact production lines, thus limiting its application scalability in space-constrained working conditions. Utility Model Content
[0005] While existing rotary drum screening solutions can achieve pretreatment screening of molten raw materials, they rely on a dedicated drive system to rotate the drum, requiring additional power components such as motors and transmission mechanisms, leading to a significant increase in equipment purchase and maintenance costs. This invention provides a molten raw material preprocessor that utilizes the natural gravity of the molten raw materials to allow them to slide naturally along the surface, completing particle size classification and screening during the sliding process. This solution eliminates the traditional power-driven mode, significantly reducing equipment manufacturing costs and maintenance burden, providing an economical and efficient solution for raw material pretreatment. The specific technical solution is as follows:
[0006] A pre-processor for smelting raw materials includes a washing tank and a screening tank. The screening tank is located above the washing tank and has a feed hopper connected to its top. The device also includes a circular screen, guide plates, and an output assembly. The circular screen is installed inside the screening tank and is inclined from rear to front. Multiple guide plates are installed on the upper surface of the circular screen and are arc-shaped. These guide plates are staggered along the material descent path of the circular screen, and the arc length of each guide plate is limited to a range of 1 / 2 to 1 / 3 of the circumference of the circle. The output assembly is located on the front sidewall of the screening tank and is connected to both the inner cavity of the screening tank and the inner cavity of the washing tank.
[0007] In the above technical solution, both the screening box and the circular screen are configured as circular structures.
[0008] In the above technical solution, the output component includes: a feeding port, a baffle, a handle, and a receiving groove. The feeding port is opened on the front side wall of the screening box; the baffle is vertically and movable and embedded in the inner cavity of the feeding port; the handle is fixedly installed on the baffle; the receiving groove is opened at the top of the inner side wall of the feeding port, and the baffle is slidably embedded in the inner cavity of the receiving groove.
[0009] In the above technical solution, the output component further includes: a material guiding channel and a coarse material guiding port. One end of the material guiding channel is connected to the feeding port. The coarse material guiding port is vertically disposed on the washing tank and connected to the top of the inner cavity of the washing tank. The other end of the material guiding channel is connected to the side wall of the coarse material guiding port.
[0010] The material guiding channel is inclined downward from the feeding port toward the coarse material guiding port.
[0011] In the above technical solution, a fine material discharge port is rotatably provided on the rear side wall of the screening box, and the fine material discharge port is located at the bottom end of the rear side wall of the screening box.
[0012] In the above technical solution, the side wall of the immersion tank is connected to an inlet for soaking liquid, and the inlet for soaking liquid is located at the top of the side wall of the immersion tank.
[0013] In the above technical solution, a support assembly is provided at the bottom of the immersion tank. The support assembly includes an annular platform and legs. The annular platform is fixedly installed at the bottom of the side wall of the immersion tank. Four legs are provided, and the four legs are respectively vertically installed on the lower surface of the annular platform.
[0014] In the above technical solution, the spacing between two adjacent legs is the same.
[0015] In the above technical solution, the bottom of the immersion tank is respectively connected to a coarse material outlet and an immersion liquid outlet.
[0016] The pre-processor for smelting raw materials of this utility model has the following advantages compared with the prior art:
[0017] I. In view of the technical bottleneck of traditional rotary drum screening systems, which rely on dedicated drive devices, resulting in high equipment costs and complex maintenance, the gravity-driven screening structure of this utility model is designed. By arranging the circular screen at an incline, the raw materials are allowed to slide naturally along the surface by their own gravity. Particle size classification and screening are completed during the sliding process. This solution abandons the traditional power-driven mode, significantly reduces equipment manufacturing costs and maintenance burden, and provides an economical and efficient solution for raw material pretreatment.
[0018] II. In response to the technical challenges of traditional screening equipment, such as high space occupancy due to the large size of the drive system, making it difficult to adapt to narrow working environments and compact production lines, this utility model integrates the screening function into the internal cavity of the screening box through an integrated structure. This design effectively avoids the space requirements of an independent drive device, significantly reduces the size of the equipment, enhances the layout flexibility and application adaptability of the equipment in space-constrained working conditions, and greatly expands its application boundaries in compact industrial scenarios.
[0019] Third, this utility model is based on the gravity screening principle of an inclined circular screen and is also equipped with multiple sets of guide plates. The multiple sets of guide plates are distributed in sequence along the material falling path of the circular screen and are arranged in an alternating staggered layout on the surface of the circular screen. By extending the raw material screening path, the contact time between the raw material and the screen surface and the number of screenings are significantly increased, effectively improving screening efficiency and fineness, and ensuring that the smelting raw materials are fully graded and screened during the gravity sliding process.
[0020] Fourth, in this utility model, the arc length of the guide plate is limited to 1 / 3 to 1 / 2 of the circumference of the whole circle. This dimensional constraint ensures that the two ends of the guide plate do not form a structural tendency to converge towards the center. This design allows the molten raw materials guided by the guide plate to slide down the circular screen surface in a more dispersed form. By extending the movement trajectory of the molten raw materials and enhancing the path dispersion, the full contact between the raw materials and the screen surface during the screening process is effectively achieved, thereby achieving sufficient screening effect.
[0021] V. This utility model constructs an integrated screening and washing system, which integrates the particle size screening of smelting raw materials with the acid and alkali washing process of large-particle materials into the same equipment. Through the linkage design of the process flow channel, the large-particle raw materials after screening are directly introduced into the washing unit, realizing the seamless connection of the pretreatment process. This integrated design not only greatly reduces the equipment footprint, but also eliminates intermediate transfer links through functional aggregation, significantly improving the continuity and production efficiency of raw material pretreatment.
[0022] In summary, this utility model, through its gravity-driven screening structure, eliminates the need for traditional power systems, significantly reducing equipment costs and maintenance burdens; its integrated internal cavity layout overcomes space limitations, enhancing the equipment's adaptability in compact production lines; the alternating sequence of guide vane assemblies extends the screening path, improving grading precision; the optimized arc length parameter design ensures material dispersion and slippage, strengthening the screening effect; the integrated screening and washing system achieves seamless process connection, reducing footprint and eliminating transfer losses; these improvements collectively construct an efficient, compact, and low-cost raw material pretreatment solution, comprehensively improving the efficiency of smelting raw material pretreatment. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the immersion tank of this utility model;
[0024] Figure 2 This is a partial cross-sectional structural diagram of the screening box of this utility model;
[0025] Figure 3 This is a top view of the guide vane of this utility model;
[0026] Figure 4 This is a schematic diagram of the feeding port structure of this utility model;
[0027] Figure 5 This is a schematic diagram of the structure of the receiving groove of this utility model;
[0028] Figures 1 to 5 In the middle, 1. Immersion tank, 2. Screening box, 3. Feed hopper, 4. Circular screen, 5. Guide plate, 6. Feed port, 7. Baffle, 8. Handle, 9. Receiving tank, 10. Guide channel, 11. Coarse material guide port, 12. Fine material discharge port, 13. Immersion liquid inlet, 14. Circular platform, 15. Support leg, 16. Coarse material outlet, 17. Immersion liquid outlet. Detailed Implementation
[0029] The following are specific implementation cases and appendices. Figures 1 to 5 The present invention will be further described below, but the present invention is not limited to these embodiments.
[0030] A pre-processor for smelting raw materials includes a washing tank 1 and a screening tank 2. The screening tank 2 is positioned above the washing tank 1, and a feed hopper 3 is connected to the top of the screening tank 2. The device also includes a circular screen 4, guide plates 5, and an output assembly. The circular screen 4 is installed inside the screening tank 2 and is inclined from the rear to the front. Multiple guide plates 5 are installed on the upper surface of the circular screen 4 and are arc-shaped. These guide plates 5 are staggered along the material descent path of the circular screen 4, and the arc length of each guide plate 5 is limited to 1 / 3 to 1 / 2 of the total circumference. / 2 range; the arc length of the guide plate 5 is limited to the range of 1 / 3 to 1 / 2 of the circumference of the whole circle. This dimensional constraint ensures that the two ends of the guide plate 5 do not form a structural tendency to converge towards the center. This design allows the molten raw materials guided by the guide plate 5 to slide down the surface of the circular screen 4 in a more dispersed form. By extending the movement trajectory of the molten raw materials and enhancing the path dispersion, the full contact between the raw materials and the screen surface during the screening process is effectively achieved, thereby achieving sufficient screening effect. The output component is set on the front side wall of the screening box 2, and the output component is connected to the inner cavity of the screening box 2 and the inner cavity of the washing box 1 respectively.
[0031] This invention features a gravity-driven screening structure that uses an inclined circular screen 4 to form a potential energy conduction surface. The raw materials are allowed to slide naturally along the surface of the screen 4 under their own weight, completing particle size classification and screening without power. This solution completely overturns the traditional power-driven mode, eliminating the need for motors, transmission mechanisms, and other components, fundamentally reducing equipment manufacturing and maintenance costs, and providing a cost-effective technical solution for raw material pretreatment. Furthermore, this invention integrates the screening function into the internal cavity of the screening box 2 through an integrated structure. This effectively avoids the space requirements of an independent drive device, significantly reducing the equipment size and enhancing the layout flexibility and application adaptability of the equipment in space-constrained conditions, greatly expanding its application boundaries in compact industrial scenarios.
[0032] Based on gravity screening using an inclined circular screen 4, this invention innovatively incorporates multiple sets of guide plates 5. These plates are arranged sequentially along the material falling trajectory of the circular screen 4 and feature an alternating staggered layout on the surface of the screen 4. By extending the raw material screening path, this significantly increases the contact time between the material and the screen surface, as well as the number of screening operations, effectively improving screening efficiency and precision, and ensuring that the smelting raw materials undergo thorough grading and screening during gravity descent.
[0033] Specifically, both the screening box 2 and the circular screen 4 are designed as circular structures, which creates conditions for the molten raw materials to roll smoothly along the edges of the screening box 2 and the circular screen 4, thus ensuring that the molten raw materials can fall smoothly and will not get stuck at the edges of the circular screen 4 and the screening box 2.
[0034] Main references Figure 4As shown, the output assembly includes: a feed inlet 6, a baffle 7, a handle 8, and a receiving groove 9. The feed inlet 6 is located on the front side wall of the screening box 2. The baffle 7 is vertically movable and embedded in the inner cavity of the feed inlet 6. The handle 8 is fixedly installed on the baffle 7. The receiving groove 9 is located at the top of the inner side wall of the feed inlet 6, and the baffle 7 is slidably embedded in the inner cavity of the receiving groove 9. The output assembly also includes: a material guide channel 10 and a coarse material guide port 11. One end of the material guide channel 10 is connected to the feed inlet 6. The coarse material guide port 11 is vertically arranged on the washing box 1 and is connected to the top of the inner cavity of the washing box 1. The other end of the material guide channel 10 is connected to the side wall of the coarse material guide port 11. The material guide channel 10 is inclined downward from the feed inlet 6 towards the coarse material guide port 11.
[0035] The qualified coarse material after being screened by the circular screen 4 rolls down to the feed port 6 under the inclined guide of the circular screen 4. When the handle 8 is lifted up and opened, the baffle 7 is retracted into the inner cavity of the receiving tank 9, the feed port 6 is opened, and the coarse material rolls down through the feed port 6 and the inclined guide channel 10 to the inner cavity of the coarse material guide port 11, and finally enters the inner cavity of the screening box 2 for acid washing or alkali washing and other immersion operations to remove surface acid and alkaline substances.
[0036] Main references Figure 4 As shown, the rear side wall of the screening box 2 is provided with a fine material discharge port 12 through a pin, and the fine material discharge port 12 is located at the bottom of the rear side wall of the screening box 2. The fine material after screening can be cleaned out from the inner cavity of the screening box 2 through the open fine material discharge port 12.
[0037] The side wall of the immersion tank 1 is connected to an inlet 13 for soaking liquid, which is located at the top of the side wall of the immersion tank 1. The soaking liquid can be injected into the inner cavity of the immersion tank 1 through the inlet 13 for subsequent immersion of qualified coarse materials. Since fine powder does not meet the usage requirements, only the qualified coarse materials that have been screened need to be immersed. This utility model constructs an integrated screening and immersion system, which integrates the particle size screening of smelting raw materials with the acid and alkali immersion process of large particle size materials in the same equipment. Through the linkage design of the process flow channel, the large particle size raw materials after screening are directly introduced into the immersion unit, realizing the seamless connection of the pretreatment process. This integrated design not only greatly reduces the equipment footprint, but also eliminates intermediate transfer links through functional aggregation, significantly improving the continuity and production efficiency of raw material pretreatment.
[0038] The bottom of the immersion tank 1 is equipped with a support assembly, which includes an annular platform 14 and legs 15. The annular platform 14 is fixedly installed on the bottom of the side wall of the immersion tank 1. There are four legs 15, and the four legs 15 are respectively vertically installed on the lower surface of the annular platform 14. The legs 15 and the annular platform 14 can prepare sufficient operating distance for the immersion tank 1 from the ground. The spacing between two adjacent legs 15 is the same to ensure that the circumferential support force of multiple sets of legs 15 on the annular platform 14 and the immersion tank 1 is the same, thus ensuring the overall stability of the equipment.
[0039] The bottom of the immersion tank 1 is connected to a coarse material outlet 16 and an immersion liquid outlet 17. After immersion, the immersion liquid is discharged from the open immersion liquid outlet 17, and the treated coarse material is discharged from the open coarse material outlet 16. It is worth noting that in this application, the coarse material outlet 16 and the immersion liquid outlet 17 adopt commercially available models and structures, which are sufficient to realize the function of discharging the finished coarse material and the immersion liquid, and meet the usage requirements. The model of the above-mentioned existing components is not limited or described in detail.
[0040] The working principle of a smelting raw material preprocessor in this embodiment is as follows:
[0041] After being fed into the feed hopper 3, the raw material to be processed falls to the higher point of the circular screen 4, namely the rear side wall of the last guide plate 5. Under the action of the inclined circular screen 4, the raw material rolls forward along its surface and completes the screening. Multiple sets of staggered guide plates 5 intervene in the straight falling path of the raw material. With the guidance of the arc-shaped guide plates 5, the raw material travels a longer path on the surface of the circular screen 4 and rolls down for screening in a more dispersed manner, ensuring the screening effect.
[0042] The qualified coarse material after being screened by the circular screen 4 rolls down to the feed port 6 under the inclined guide of the circular screen 4. When the handle 8 is lifted and opened, the baffle 7 is retracted into the inner cavity of the receiving tank 9, the feed port 6 is opened, and the coarse material rolls down through the feed port 6 and the inclined guide channel 10 to the inner cavity of the coarse material guide port 11, and finally enters the inner cavity of the screening box 2 for acid washing or alkali washing and other immersion operations to remove surface acid and alkaline substances. After immersion washing, the soaking liquid is discharged from the open soaking liquid outlet 17, and the treated coarse material is discharged from the open coarse material outlet 16.
[0043] This invention utilizes a gravity-driven screening structure, eliminating the need for traditional power systems and significantly reducing equipment costs and maintenance burdens. The integrated internal cavity layout overcomes space limitations, enhancing the equipment's adaptability in compact production lines. Five alternatingly distributed guide plates extend the screening path, improving grading precision. Optimized arc length parameters ensure material dispersion and slippage, strengthening the screening effect. The integrated screening and washing system achieves seamless process connection, reducing footprint and eliminating transfer losses. These improvements collectively create an efficient, compact, and low-cost raw material pretreatment solution, comprehensively improving the efficiency of smelting raw material pretreatment.
[0044] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.
[0045] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0046] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.
[0047] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0048] Unless otherwise stated, the term "multiple" means two or more.
[0049] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.
[0050] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.
[0051] 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 pre-processor for smelting raw materials, comprising a washing tank (1) and a screening tank (2), wherein the screening tank (2) is disposed above the washing tank (1), and a feed hopper (3) is connected to the top of the screening tank (2), characterized in that: Also includes: A circular screen (4) is installed in the inner cavity of the screening box (2), and the circular screen (4) is inclined from the rear to the front. A guide plate (5) is installed on the upper surface of the circular screen (4). The guide plate (5) is arc-shaped. There are multiple guide plates (5), and the multiple guide plates (5) are staggered along the material falling path of the circular screen (4). The arc length of each guide plate (5) is limited to 1 / 3 to 1 / 2 of the circumference of the whole circle. The output component is disposed on the front side wall of the screening box (2) and is connected to the inner cavity of the screening box (2) and the inner cavity of the washing box (1).
2. The smelting raw material pre-processor according to claim 1, characterized in that: Both the screening box (2) and the circular screen (4) are configured as circular structures.
3. The smelting raw material pre-processor according to claim 1, characterized in that: The output component includes: Feeding port (6), the feeding port (6) is opened on the front side wall of the screening box (2); Baffle (7), which is movable and height-adjustable and embedded in the inner cavity of the feed port (6); Handle (8), the handle (8) is fixedly installed on the baffle (7); The receiving groove (9) is located at the top of the inner side wall of the feeding port (6), and the baffle (7) is slidably embedded in the inner cavity of the receiving groove (9).
4. A pre-processor for smelting raw materials according to claim 3, characterized in that: The output component also includes: A material guiding channel (10) is provided, one end of which is connected to the feeding port (6); Coarse material guide port (11) is vertically arranged on the washing tank (1) and connected to the top of the inner cavity of the washing tank (1). The other end of the guide channel (10) is connected to the side wall of the coarse material guide port (11). The material guiding channel (10) is inclined downward from the feeding port (6) toward the coarse material guiding port (11).
5. A pre-processor for smelting raw materials according to claim 1, characterized in that: The rear side wall of the screening box (2) is rotatably provided with a fine material discharge port (12), and the fine material discharge port (12) is located at the bottom of the rear side wall of the screening box (2).
6. A pre-processor for smelting raw materials according to claim 1, characterized in that: The immersion tank (1) has a immersion liquid inlet (13) connected to its side wall, and the immersion liquid inlet (13) is located at the top of the side wall of the immersion tank (1).
7. A pre-processor for smelting raw materials according to claim 1, characterized in that: The bottom of the immersion tank (1) is provided with a support assembly, which includes: An annular platform (14) is fixedly installed at the bottom of the side wall of the immersion tank (1); The support (15) is provided with four legs, and the four legs (15) are respectively vertically installed on the lower surface of the annular platform (14).
8. A pre-processor for smelting raw materials according to claim 7, characterized in that: The spacing between two adjacent legs (15) is the same.
9. A pre-processor for smelting raw materials according to claim 1, characterized in that: The bottom of the immersion tank (1) is connected to a coarse material outlet (16) and an immersion liquid outlet (17).