Vanadium titanium iron concentrate fine gangue negative pressure screening and impurity removing device

Abstract

The application discloses a vanadium-titanium iron concentrate fine gangue impurity negative pressure screening and impurity removing device, relates to the technical field of vanadium-titanium iron concentrate fine gangue impurity treatment, and comprises a box body; a screening body is arranged in the box body; a negative pressure gas flow equipment is arranged on the outer side of the box body through a negative pressure pipe; a discharge port is fixedly connected to the bottom end of the outer side of the box body; a group of supporting columns are fixedly connected to the bottom end of the outer side of the box body; and a feeding port is fixedly connected to the top end of the outer side of the box body; the material falls into the auxiliary feeding pipe through the feeding port, slides along the slope of the auxiliary feeding pipe, and a part of the material falls through the discharge hole in the sliding process of the material on the slope of the auxiliary feeding pipe, so that the material is continuously discharged while sliding, the material is distributed in multiple points, dispersedly and continuously along the screen surface of the screening body, local accumulation and edge vacancy are effectively avoided, the uniformity of the material layer thickness is improved, the utilization rate of the screen surface and the processing capacity per unit time are improved, and the overall impurity removing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of vanadium-titanium-iron concentrate fine gangue impurity treatment technology, and in particular to a negative pressure sieving and impurity removal device for vanadium-titanium-iron concentrate fine gangue impurities. Background Technology

[0002] Vanadium-titanium magnetite is an important mineral resource in my country, distributed in Panzhihua, Sichuan and Chengde, Hebei. Vanadium-titanium magnetite is a typical low-grade complex symbiotic deposit with fine mineral distribution. Most gangue minerals have a particle size of less than 30μm. After processing, the vanadium-titanium iron concentrate still contains a large amount of gangue impurities. In order to prevent these gangue impurities from affecting the subsequent smelting quality, a negative pressure screening and impurity removal device for fine gangue impurities in titanium iron concentrate is required to treat them.

[0003] Currently, most existing negative pressure screening and impurity removal devices for vanadium-titanium-iron concentrate adopt a fixed feed port single-point feeding method or linear vibration feeding. The material landing point is concentrated and fixed, which easily forms local thick material piles and thin material areas at the edges on the screen surface. This results in a serious unevenness in the material layer thickness, which not only wastes the effective working area of ​​the screen surface and limits the processing capacity, but also causes uneven distribution of resistance and speed of negative pressure airflow penetrating the material layer. This leads to insufficient extraction of gangue impurities in the thick material area and poor impurity removal effect. In addition, the continuous scouring at the fixed landing point can easily cause local rapid wear of the screen. Furthermore, the fine mineral powder agglomerates cannot be effectively dispersed during the feeding stage, requiring an additional material uniform dispersing structure, which increases equipment cost and operation and maintenance difficulty. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above-mentioned negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate. It is suitable for solving the problems of feeding methods with fixed inlet single-point feeding or linear vibration feeding, where the material landing point is concentrated and fixed, easily forming local thick material piles and thin material areas at the edges on the screen surface, resulting in a serious uneven material layer thickness. This not only wastes the effective working area of ​​the screen surface and limits the processing capacity, but also causes uneven distribution of resistance and speed of negative pressure airflow penetrating the material layer, resulting in insufficient extraction of gangue impurities in the thick material area and poor impurity removal effect. In addition, the continuous scouring at the fixed landing point can easily cause local rapid wear of the screen, and the fine mineral powder agglomerates cannot be effectively dispersed during the feeding stage, requiring an additional material uniform and dispersing structure, which increases equipment cost and operation and maintenance difficulty.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate, comprising a box body; a screening body is provided inside the box body; a negative pressure airflow device is provided on the outside of the box body through a negative pressure pipe; a discharge port is fixedly connected to the bottom of the outside of the box body; a set of support columns are fixedly connected to the bottom of the outside of the box body; a feed inlet is fixedly connected to the top of the outside of the box body; an auxiliary feed pipe is fixedly connected to the top of the inside of the box body, and the auxiliary feed pipe is connected to the feed inlet; a set of discharge holes are opened at the bottom of the outside of the auxiliary feed pipe, and one end of the auxiliary feed pipe is inclined.

[0008] As a preferred embodiment of the negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to the present invention, the box body includes a main body and a circular plate; the outer side of the circular plate is rotatably connected to the inner side of the main body; an annular bevel rack is fixedly connected to the top outer side of the main body; a driving device is fixedly connected to the top outer side of the circular plate; the output end of the driving device is provided with a rotating shaft; a first bevel gear is fixedly connected to one end of the rotating shaft, and the first bevel gear meshes with the annular bevel rack.

[0009] As a preferred embodiment of the negative pressure screening and impurity removal device for vanadium-titanium-iron concentrate with fine gangue impurities described in this invention, wherein: a set of material distribution plates is fixedly connected to the outer side of one end of the rotating shaft located inside the feed inlet; the set of material distribution plates fits into the inner side of the feed inlet; and a rubber layer is provided at one end of the material distribution plate.

[0010] As a preferred embodiment of the negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to the present invention, the auxiliary feed pipe includes a fixed pipe and a moving pipe; the inner side of the moving pipe is slidably connected to the outer side of the fixed pipe; a reciprocating shaft is rotatably connected to the outer side of the fixed pipe via a first block; a reciprocating block is provided on the outer side of the reciprocating shaft, and the bottom outer end of the reciprocating block is fixedly connected to the top outer side of the moving pipe; a second gear is fixedly connected to one end of the reciprocating shaft; a second annular rack is fixedly connected to the top inner side of the main body via a connecting plate, and the second annular rack meshes with the second gear.

[0011] As a preferred embodiment of the negative pressure screening and impurity removal device for vanadium-titanium-iron concentrate with fine gangue impurities described in this invention, wherein: a cylindrical block is fixedly connected to one end of the reciprocating shaft; a set of semi-circular protrusions is fixedly connected to the outer side of the cylindrical block; both the cylindrical block and the semi-circular protrusions are made of elastic materials.

[0012] As a preferred embodiment of the negative pressure screening and impurity removal device for vanadium-titanium-iron concentrate with fine gangue impurities described in this invention, the outer side of the screening body is rotatably connected to the inner side of the box; a third annular rack is fixedly connected to the bottom of the outer side of the screening body; a motor is fixedly connected to the outer side of the box through an arc block; a third gear is provided at the output end of the motor through a round shaft, and the third gear meshes with the third annular rack.

[0013] As a preferred embodiment of the negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to the present invention, wherein: a fifth annular rack is fixedly connected to the inner side of the box; a set of rotating rods is rotatably connected to the outer top of the screening body through a set of square blocks, and the set of rotating rods is in a circumferential array; a fifth gear is fixedly connected to one end of the outer side of each set of rotating rods, and the set of fifth gears meshes with the fifth annular rack; a set of vibrating balls is fixedly connected to the outer side of the rotating rods through a set of flexible rods.

[0014] As a preferred embodiment of the negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to the present invention, wherein: an annular baffle is provided at the bottom outer side of the screening body; the third gear and the third annular rack are located between the annular baffle and the inner side of the box; a protective shell is fixedly connected to the top outer side of the screening body, and the protective shell and the inner side of the box form a sealed space; the fifth gear and the fifth annular rack are located within the sealed space.

[0015] The beneficial effects of this invention are: 1. By feeding material into the inlet, the material falls into the auxiliary feed pipe and slides down the inclined surface of the auxiliary feed pipe until it falls onto the screening body for screening and impurity removal. At this time, the negative pressure airflow device generates negative pressure airflow in the box through the negative pressure pipe to assist the screening body in screening and impurity removal. Furthermore, as the material slides on the inclined surface of the auxiliary feed pipe, a set of discharge holes is opened at the bottom outer side of the auxiliary feed pipe. During the sliding process, some material will fall through the discharge holes, allowing the material to slide and discharge simultaneously. All material is discharged through the outlet of the auxiliary feed pipe, thereby achieving multi-point, dispersed, and continuous material distribution along the screen surface of the screening body. This effectively avoids local accumulation and edge voids, improves the uniformity of the material layer thickness, increases the screen surface utilization rate and the throughput per unit time, and makes the resistance distribution of the negative pressure airflow more uniform when penetrating the material layer, enhancing the extraction efficiency of gangue impurities in thick material areas and improving the overall impurity removal effect. In addition, since the material landing point is no longer concentrated in a fixed position, the screen is subjected to more balanced force, which slows down the local wear process. 2. The housing includes a main body and a circular plate. The drive device drives the first bevel gear to rotate via a rotating shaft. Because the first bevel gear meshes with the annular bevel rack and the annular bevel rack is fixed on the main body, when the first bevel gear moves along the tooth groove of the annular bevel rack, it drives the circular plate to rotate. The circular plate drives the auxiliary feed pipe to rotate, thereby causing the outlet of the auxiliary feed pipe to perform circumferential motion. This causes the position of the material falling onto the screening body to change continuously, thereby further dispersing the material on the screening body and further improving the overall impurity removal effect. 3. The motor drives the third gear to rotate via a round shaft, which in turn drives the third ring rack to rotate, thereby rotating the screening body. This continuous rotation of the screening body refreshes the material contact surface, preventing localized areas from being subjected to the same material impact for extended periods and further balancing screen wear. Simultaneously, the rotational motion combined with negative pressure airflow helps break up the agglomeration structure of fine mineral powder, improving the separation efficiency of impurities and useful minerals, and promoting the rapid discharge of screened material to prevent backmixing or blockage, thus maintaining the continuity and stability of the screening process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a structural diagram of the main body of the present invention; Figure 2 This is a diagram showing the internal structure of the housing of the present invention; Figure 3 This is an exploded view of the main body and the circular plate of the present invention; Figure 4 This is an exploded view of the feed inlet and the distribution plate of the present invention; Figure 5 This is a structural diagram of the circular plate, auxiliary feed pipe, and second annular rack of the present invention; Figure 6 This is a structural diagram of the auxiliary feed pipe, reciprocating shaft, and cylindrical block of the present invention; Figure 7 This is a structural diagram of the motor, the third annular rack, and the third gear of the present invention; Figure 8 This is a structural diagram of the rotating rod, vibrating ball, and fifth gear of the present invention.

[0017] Figure Descriptions: 1. Box body; 2. Screening body; 3. Discharge port; 4. Support column; 5. Feed inlet; 6. Auxiliary feed pipe; 7. Discharge hole; 101. Main body; 102. Circular plate; 103. Annular bevel rack; 104. Drive device; 105. Rotating shaft; 106. First bevel gear; 8. Distributor plate; 601. Fixed pipe; 602. Moving pipe; 603. Reciprocating shaft; 604. Reciprocating block; 605. Second gear; 606. Second annular rack; 607. Cylindrical block; 608. Semi-circular protrusion; 9. Third annular rack; 10. Motor; 11. Third gear; 12. Fifth annular rack; 13. Rotating rod; 14. Fifth gear; 15. Vibrating ball; 16. Annular baffle; 17. Protective shell; 18. Negative pressure airflow device. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0022] Example 1:

[0023] Reference Figures 1-6According to one embodiment of the present invention, a negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate is provided, including a box body 1; a screening body 2 is provided inside the box body 1; a negative pressure airflow device 18 is provided on the outside of the box body 1 through a negative pressure pipe; a discharge port 3 is fixedly connected to the bottom of the outside of the box body 1; a set of support columns 4 are fixedly connected to the bottom of the outside of the box body 1; a feed port 5 is fixedly connected to the top of the outside of the box body 1; an auxiliary feed pipe 6 is fixedly connected to the top of the inside of the box body 1, and the auxiliary feed pipe 6 is connected to the feed port 5; a set of discharge holes 7 are opened at the bottom of the outside of the auxiliary feed pipe 6, and one end of the auxiliary feed pipe 6 is inclined.

[0024] By feeding material into the inlet 5, the material falls through the inlet 5 into the auxiliary feed pipe 6, sliding down the inclined surface of the auxiliary feed pipe 6 until it falls onto the screening body 2 for screening and impurity removal. At this time, the negative pressure airflow device 18 generates negative pressure airflow in the housing 1 through the negative pressure pipe, assisting the screening body 2 in screening and impurity removal. Furthermore, as the material slides on the inclined surface of the auxiliary feed pipe 6, a set of discharge holes 7 are provided at the bottom outer side of the auxiliary feed pipe 6. During the sliding process, some material will fall through the discharge holes 7, allowing the material to slide and discharge simultaneously. The material is fed through the auxiliary feed pipe 6 until it is completely discharged, thus achieving multi-point, dispersed, and continuous material distribution along the screen surface of the screening body 2. This effectively avoids local accumulation and edge voids, improves the uniformity of the material layer thickness, increases the screen surface utilization rate and the throughput per unit time, and makes the resistance distribution of the negative pressure airflow more uniform when penetrating the material layer. This enhances the extraction efficiency of gangue impurities in thick material areas and improves the overall impurity removal effect. In addition, since the material drop point is no longer concentrated in a fixed position, the screen is subjected to more balanced force, which slows down the local wear process.

[0025] A set of material distribution plates 8 is fixedly connected to the outer side of one end of the rotating shaft 105 inside the feed inlet 5; the set of material distribution plates 8 fits into the inner side of the feed inlet 5; a rubber layer is provided at one end of the material distribution plate 8.

[0026] When the rotating shaft 105 rotates, it drives a set of feed plates 8 to rotate, so that when the material is put into the feed inlet 5, it is blocked by a set of feed plates 8. As the feed plates 8 rotate, the material is gradually fed out, so that too much material is fed at one time, which will cause the processing port, auxiliary feed pipe 6 or screening body 2 to be blocked. At the same time, the rubber layer effectively buffers the impact of the material and reduces the wear on the feed plates 8 and the inner wall of the feed inlet 5.

[0027] The housing 1 includes a main body 101 and a circular plate 102; the outer side of the circular plate 102 is rotatably connected to the inner side of the main body 101; an annular bevel rack 103 is fixedly connected to the outer top of the main body 101; a drive device 104 is fixedly connected to the outer top of the circular plate 102; a rotating shaft 105 is provided at the output end of the drive device 104; a first bevel gear 106 is fixedly connected to one end of the rotating shaft 105, and the first bevel gear 106 meshes with the annular bevel rack 103.

[0028] The housing 1 includes a main body 101 and a circular plate 102. The drive device 104 drives the first bevel gear 106 to rotate via the rotating shaft 105. Since the first bevel gear 106 meshes with the annular bevel rack 103 and the annular bevel rack 103 is fixed on the main body 101, when the first bevel gear 106 moves along the tooth groove of the annular bevel rack 103, it drives the circular plate 102 to rotate. The circular plate 102 drives the auxiliary feed pipe 6 to rotate, thereby causing the outlet of the auxiliary feed pipe 6 to perform circumferential motion. This causes the position of the material falling onto the screening body 2 to change continuously, thereby further dispersing the material on the screening body 2 and further improving the overall impurity removal effect. Since the feed port 5 is also in the center position when rotating and does not move, it does not affect the feeding of the material.

[0029] The auxiliary feed pipe 6 includes a fixed pipe 601 and a moving pipe 602; the inner side of the moving pipe 602 is slidably connected to the outer side of the fixed pipe 601; the outer side of the fixed pipe 601 is rotatably connected to a reciprocating shaft 603 via a first block; a reciprocating block 604 is provided on the outer side of the reciprocating shaft 603, and the bottom outer end of the reciprocating block 604 is fixedly connected to the top outer side of the moving pipe 602; a second gear 605 is fixedly connected to one end of the reciprocating shaft 603; a second annular rack 606 is fixedly connected to the top inner side of the main body 101 via a connecting plate, and the second annular rack 606 meshes with the second gear 605.

[0030] When the auxiliary feed pipe 6 rotates with the circular plate 102, it drives the reciprocating shaft 603 and the second gear 605 on it to rotate through the first block. Since the second annular rack 606 meshes with the second gear 605 and the second annular rack 606 is fixed to the main body 101 through the connecting plate, the second gear 605 rotates as it moves along the tooth groove of the second annular rack 606, thereby driving the reciprocating shaft 603 to rotate. The rotation of the reciprocating shaft 603 drives the reciprocating block 604 to reciprocate, thereby driving the moving pipe 602 to reciprocate, constantly changing the position of the discharge port of the moving pipe 602. With the auxiliary feed pipe 6 rotating with the circular plate 102, the material can be more dispersed and more evenly distributed onto the screening body 2, further reducing the empty area on the screening body 2, thereby further improving the overall impurity removal effect.

[0031] A cylindrical block 607 is fixed to one end of the reciprocating shaft 603; a set of semi-circular protrusions 608 are fixed to the outside of the cylindrical block 607; both the cylindrical block 607 and the semi-circular protrusions 608 are made of elastic material.

[0032] The reciprocating shaft 603 rotates, causing the cylindrical block 607 to rotate, which in turn causes a set of semi-circular protrusions 608 to rotate. The semi-circular protrusions 608 continuously impact the outer side of the moving tube 602, generating vibration and promoting the sliding of materials in the auxiliary feed tube 6. This prevents materials from accumulating inside the auxiliary feed tube 6. Furthermore, because the moving tube 602 is in continuous reciprocating motion, the semi-circular protrusions 608 impact different positions on the moving tube 602, causing the moving tube 602 to vibrate uniformly as a whole, further improving the material discharge and distribution effect of the auxiliary feed tube 6.

[0033] Example 2:

[0034] Reference Figure 2 and Figures 7-8 The difference from Embodiment 1 is that: the outer side of the screening body 2 is rotatably connected to the inner side of the box 1; a third annular rack 9 is fixedly connected to the bottom of the outer side of the screening body 2; a motor 10 is fixedly connected to the outer side of the box 1 through an arc block; a third gear 11 is provided at the output end of the motor 10 through a round shaft, and the third gear 11 meshes with the third annular rack 9.

[0035] The motor 10 drives the third gear 11 to rotate via a round shaft. The third gear 11 drives the third ring rack 9 to rotate, thereby driving the screening body 2 to rotate. During the rotation, the screening body 2 continuously refreshes the material contact surface, avoiding local areas from being subjected to the same material impact for a long time, and further balancing the wear of the screen. At the same time, the rotational motion combined with the negative pressure airflow helps to break the agglomeration structure of fine mineral powder, improve the separation efficiency of impurities and useful minerals, and promote the rapid discharge of screened materials to prevent backmixing or blockage, thereby maintaining the continuity and stability of the screening process.

[0036] A fifth annular rack 12 is fixedly connected to the inner side of the housing 1; a set of rotating rods 13 are rotatably connected to the outer top of the screening body 2 through a set of square blocks, and the set of rotating rods 13 are arranged in a circular array; a fifth gear 14 is fixedly connected to one end of the outer side of each set of rotating rods 13, and the set of fifth gears 14 meshes with the fifth annular rack 12; a set of vibrating balls 15 are fixedly connected to the outer side of the rotating rods 13 through a set of flexible rods.

[0037] The rotation of the screening body 2 drives a set of rotating rods 13 and the fifth gear 14 on them to rotate through a set of square blocks. Since the set of fifth gears 14 are all meshed with the fifth ring rack 12 and the fifth ring rack 12 is fixed in the box 1, when the fifth gear 14 rotates, it drives the rotating rod 13 to rotate through the fifth ring rack 12. This causes the soft rod to drive the vibrating ball 15 to continuously strike the outside of the screening body 2, generating high-frequency micro-amplitude vibration, which effectively prevents the screen holes from clogging. At the same time, the striking action of the vibrating ball 15 further promotes the loosening of the material layer and enhances the penetration and extraction ability of the negative pressure airflow to gangue impurities, making the impurity removal more thorough.

[0038] An annular baffle 16 is provided at the bottom outer side of the screening body 2; the third gear 11 and the third annular rack 9 are located between the annular baffle 16 and the inner side of the box 1; a protective shell 17 is fixedly connected to the top outer side of the screening body 2, and the protective shell 17 and the inner side of the box 1 form a sealed space; the fifth gear 14 and the fifth annular rack 12 are located in the sealed space.

[0039] The annular baffle 16 isolates the screened material from the third gear 11 and the third annular rack 9, and the protective shell 17 isolates the fifth gear 14 and the fifth annular rack 12 from the material, effectively preventing dust or fine particles from entering the transmission mechanism and avoiding wear, jamming or failure of the gear meshing parts due to impurities.

[0040] Working principle: First, the material is fed into the feed inlet 5 and falls into the auxiliary feed pipe 6. The material slides down the inclined surface of the auxiliary feed pipe 6 until it falls onto the screening body 2 for screening and impurity removal. At this time, the negative pressure airflow device 18 generates negative pressure airflow in the box 1 through the negative pressure pipe to assist the screening body 2 in screening and impurity removal. When the material slides on the inclined surface of the auxiliary feed pipe 6, a set of discharge holes 7 are opened at the bottom of the outer side of the auxiliary feed pipe 6. During the sliding process, when the material encounters the discharge holes 7, some material will fall through the discharge holes 7. The material slides and discharges at the same time until it is completely discharged through the outlet of the auxiliary feed pipe 6. This achieves multi-point, dispersed and continuous material distribution along the screen surface of the screening body 2, effectively avoiding local accumulation and edge emptiness.

[0041] Secondly, the motor 10 drives the third gear 11 to rotate via the round shaft, and the third gear 11 drives the third ring rack 9 to rotate, thereby driving the screening body 2 to rotate. During the rotation, the screening body 2 continuously refreshes the material contact surface, avoiding local areas from being subjected to the same material impact for a long time, and further balancing the wear of the screen. At the same time, the rotational motion combined with the negative pressure airflow helps to break the agglomeration structure of fine mineral powder, improve the separation efficiency of impurities and useful minerals, and promote the rapid discharge of screened materials to prevent backmixing or blockage, thereby maintaining the continuity and stability of the screening process.

[0042] Secondly, the rotation of the screening body 2 drives a set of rotating rods 13 and the fifth gear 14 on them to rotate through a set of square blocks. Since the set of fifth gears 14 are all meshed with the fifth ring rack 12, and the fifth ring rack 12 is fixed inside the housing 1, when the fifth gear 14 rotates, it drives the rotating rod 13 to rotate through the fifth ring rack 12. This causes the soft rod to drive the vibrating ball 15 to continuously strike the outside of the screening body 2, generating high-frequency micro-amplitude vibration, which effectively prevents the screen holes from clogging. At the same time, the striking action of the vibrating ball 15 further promotes the loosening of the material layer, enhances the penetration and extraction ability of the negative pressure airflow on gangue impurities, and makes the impurity removal more thorough. The annular baffle 16 isolates the screened object from the third gear 11 and the third ring rack 9, and the protective shell 17 isolates the fifth gear 14 and the fifth ring rack 12 from the material, effectively preventing dust or fine particles from entering the transmission mechanism and avoiding wear, jamming or failure of the gear meshing parts due to impurities.

[0043] Then, the drive device 104 drives the first bevel gear 106 to rotate via the rotating shaft 105. When the first bevel gear 106 moves along the tooth groove of the annular bevel rack 103, it drives the circular plate 102 to rotate. The circular plate 102 drives the auxiliary feed pipe 6 to rotate, thereby causing the outlet of the auxiliary feed pipe 6 to move in a circular motion. This causes the position of the material falling onto the screening body 2 to change continuously, thereby further dispersing the material on the screening body 2 and further improving the overall impurity removal effect. When the rotating shaft 105 rotates, it drives a set of distribution plates 8 to rotate. When the material is put into the feed inlet 5, it is blocked by a set of distribution plates 8. As the distribution plates 8 rotate, the material is gradually fed out, so that too much material is fed at once, which may cause blockage of the processing port, auxiliary feed pipe 6 or screening body 2. At the same time, the rubber layer effectively buffers the impact of the material and reduces the wear on the distribution plates 8 and the inner wall of the feed inlet 5.

[0044] Finally, as the auxiliary feed pipe 6 rotates with the circular plate 102, it drives the reciprocating shaft 603 and its second gear 605 to rotate via the first block. Since the second annular rack 606 meshes with the second gear 605, and the second annular rack 606 is fixed to the main body 101 via a connecting plate, the second gear 605 rotates as it moves along the tooth grooves of the second annular rack 606. This rotation drives the reciprocating shaft 603 to rotate, causing the reciprocating block 604 to reciprocate, which in turn drives the moving pipe 602 to reciprocate, continuously changing the position of the moving pipe 602's outlet. This, combined with the rotation of the auxiliary feed pipe 6 with the circular plate 102, ensures that the auxiliary feed pipe 6 rotates with the circular plate 102. This allows the material to be distributed more evenly and dispersed onto the screening body 2, further reducing the empty areas on the screening body 2 and thus further improving the overall impurity removal effect. The reciprocating shaft 603 rotates, driving the cylindrical block 607 to rotate, which in turn drives a set of semi-circular protrusions 608 to rotate. The semi-circular protrusions 608 continuously impact the outer side of the moving tube 602, generating vibration and promoting the sliding of the material in the auxiliary feed tube 6. This prevents the material from accumulating inside the auxiliary feed tube 6. Furthermore, because the moving tube 602 is constantly reciprocating, the semi-circular protrusions 608 impact different positions on the moving tube 602, causing the moving tube 602 to vibrate evenly as a whole, further improving the material discharge and distribution effect of the auxiliary feed tube 6.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate, comprising a box body (1); a screening body (2) is provided inside the box body (1); a negative pressure airflow device (18) is provided on the outside of the box body (1) through a negative pressure pipe; a discharge port (3) is fixedly connected to the bottom of the outside of the box body (1); and a set of support columns (4) is fixedly connected to the bottom of the outside of the box body (1); characterized in that, The top outer side of the box (1) is fixed with a feed inlet (5); the top inner side of the box (1) is fixed with an auxiliary feed pipe (6), and the auxiliary feed pipe (6) is connected to the feed inlet (5); a set of discharge holes (7) are opened at the bottom outer side of the auxiliary feed pipe (6), and one end of the auxiliary feed pipe (6) is inclined.

2. The negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to claim 1, characterized in that: The housing (1) includes a main body (101) and a circular plate (102); the outer side of the circular plate (102) is rotatably connected to the inner side of the main body (101); an annular bevel rack (103) is fixedly connected to the outer top of the main body (101); a drive device (104) is fixedly connected to the outer top of the circular plate (102); the output end of the drive device (104) is provided with a rotating shaft (105); a first bevel gear (106) is fixedly connected to one end of the rotating shaft (105), and the first bevel gear (106) meshes with the annular bevel rack (103).

3. The negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to claim 2, characterized in that: A set of material distribution plates (8) is fixed to the outer side of one end of the rotating shaft (105) inside the feed inlet (5); the set of material distribution plates (8) fits into the inner side of the feed inlet (5); one end of the material distribution plate (8) is provided with a rubber layer.

4. The negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to claim 3, characterized in that: The auxiliary feed pipe (6) includes a fixed pipe (601) and a moving pipe (602); the inner side of the moving pipe (602) is slidably connected to the outer side of the fixed pipe (601); the outer side of the fixed pipe (601) is rotatably connected to a reciprocating shaft (603) through a first block; a reciprocating block (604) is provided on the outer side of the reciprocating shaft (603), and the bottom outer side of the reciprocating block (604) is fixedly connected to the top outer side of the moving pipe (602); a second gear (605) is fixedly connected to one end of the reciprocating shaft (603); a second annular rack (606) is fixedly connected to the top inner side of the main body (101) through a connecting plate, and the second annular rack (606) meshes with the second gear (605).

5. The negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to claim 4, characterized in that: A cylindrical block (607) is fixed to one end of the reciprocating shaft (603); a set of semi-circular protrusions (608) is fixed to the outside of the cylindrical block (607); the cylindrical block (607) and the semi-circular protrusions (608) are both made of elastic material.

6. The negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to claim 5, characterized in that: The outer side of the screening body (2) is rotatably connected to the inner side of the box (1); a third annular rack (9) is fixedly connected to the bottom of the outer side of the screening body (2); a motor (10) is fixedly connected to the outer side of the box (1) through an arc block; a third gear (11) is provided at the output end of the motor (10) through a round shaft, and the third gear (11) meshes with the third annular rack (9).

7. The negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to claim 6, characterized in that: The inner side of the box (1) is fixedly connected to a fifth annular rack (12); the outer top of the screening body (2) is rotatably connected to a set of rotating rods (13) through a set of square blocks, and the set of rotating rods (13) are arranged in a circular array; a fifth gear (14) is fixedly connected to one end of the outer side of each set of rotating rods (13), and the set of fifth gears (14) meshes with the fifth annular rack (12); a set of vibrating balls (15) is fixedly connected to the outer side of the rotating rods (13) through a set of flexible rods.

8. The negative pressure screening and impurity removal device for fine gangue impurities in vanadium-titanium-iron concentrate according to claim 7, characterized in that: An annular baffle (16) is provided at the bottom outer side of the screening body (2); the third gear (11) and the third annular rack (9) are located between the annular baffle (16) and the inner side of the box (1); a protective shell (17) is fixedly connected to the top outer side of the screening body (2), and the protective shell (17) and the inner side of the box (1) form a sealed space; the fifth gear (14) and the fifth annular rack (12) are located in the sealed space.

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