Screening device for mixing iron ore powder and anti-freezing agent

Abstract

The invention relates to the technical field of screening, and discloses an iron ore powder and antifreezing agent mixed screening device which comprises a rack, and the surface where the top of the rack is located is inclined; a first bearing seat is mounted on the rack, a roller with a rubber wheel surface is rotationally connected to the first bearing seat, a universal coupling is connected to the shaft end of the roller, a shaft rod is connected to the other end of the universal coupling, a speed reducer arranged on a second supporting seat is connected to the free end of the shaft rod, and the second supporting seat is connected with the rack; the speed reducer is driven by a first motor arranged on the rack, and the first motor and the speed reducer transmit power through belt transmission; a drum screen assembly used for improving the mixing uniformity of the iron ore powder and the anti-freezing agent is connected to the rolling wheel in a rolling mode, and mixed materials are discharged from screen holes of the drum screen assembly. Mixing, screening, conveying and cleaning are integrated, mixing uniformity is high, screening efficiency is excellent, operation and maintenance are convenient and fast, and the requirement for mixing and screening of iron ore powder and an anti-freezing agent is met.

Description

Technical Field

[0001] This invention relates to the field of screening technology, and in particular to a screening device for mixing iron ore powder with antifreeze. Background Technology

[0002] In the steel industry's logistics and transportation sector, iron ore powder, as a key production raw material, often needs to be transported long distances from ports to inland steel enterprises. In extreme low-temperature environments during winter (such as -35 degrees Celsius), iron ore powder is prone to freezing due to moisture, resulting in "frozen sides" and "frozen bottoms"—that is, the iron ore powder severely adheres to the side walls and bottom of the transport vehicle. This not only requires manual intervention for unloading operations, extending operation time and increasing labor costs, but also necessitates the use of thawing storage resources for thawing, causing shortages in thawing storage capacity, reduced transportation efficiency, and creating a vicious cycle of "freezing-stockpiling-reduced efficiency," significantly increasing the operating costs of enterprises.

[0003] To address this issue, the industry generally adopts a technical solution of adding antifreeze to iron ore powder. The core principle is to ensure that the antifreeze and iron ore powder are mixed evenly to prevent freezing in unmixed areas. Existing mixing processes mostly rely on adding antifreeze to the loader bucket and then stirring, or directly sprinkling antifreeze during belt conveyor transport. However, due to limitations in equipment structure and operation methods, problems such as uneven antifreeze dispersion and localized excessively high or low concentrations are prone to occur. At the same time, lumpy impurities that may be mixed in the iron ore powder can further hinder sufficient contact between the antifreeze and the iron ore powder, resulting in poor mixing effects and failing to completely solve the freezing problem at extreme low temperatures.

[0004] Furthermore, existing technologies lack a dedicated integrated screening device for the mixing process of iron ore powder and antifreeze. Typically, impurities in the iron ore powder must be screened first, followed by a separate mixing operation. This process is cumbersome and prone to uneven secondary mixing due to transfer issues, failing to meet the demands for efficient and precise mixing. This hinders improvements in the efficiency of iron ore powder transportation in winter and reduces operating costs. Therefore, developing a device that can simultaneously screen and remove impurities from iron ore powder and uniformly mix it with antifreeze is a key requirement for solving the problem of iron ore powder freezing during transportation in low-temperature environments. Summary of the Invention

[0005] The purpose of this invention is to provide a screening device for mixing iron ore powder and antifreeze, thereby solving the problem mentioned in the background art of how to provide a device that simultaneously achieves screening and impurity removal of iron ore powder and uniform mixing of antifreeze.

[0006] The technical solution adopted in this invention is as follows: A screening device for mixing iron ore powder and antifreeze includes a frame, the top surface of which is inclined; a first support seat is provided on the top surface of the frame, two first support seats form a group, and at least two groups of first support seats are provided on the frame; two symmetrically arranged bases are connected to the first support seats, a first bearing seat is provided on the base, a roller is rotatably connected to the first bearing seat, a universal coupling is connected to the shaft end of the roller, a shaft is connected to the other end of the universal coupling, and a reducer is connected to the free end of the shaft on a second support seat, the second support seat is connected to the frame; the reducer is driven by a first motor on the frame, and the first motor and the reducer transmit power through belt drive; a drum screen assembly for mixing iron ore powder and antifreeze is rotatably connected to the roller, and the mixed material is discharged from the screen holes of the drum screen assembly.

[0007] Furthermore, the inner wall of the hopper is connected to a group of two spring seats located at the included angle of the hopper. The upper spring seat is connected to a long spring, and the lower end of the long spring is connected to a protruding rod that is slidably connected to the lower spring seat. A flap for pushing the protruding rod is rotatably connected to the hopper outlet section. The flap is connected to a fifth motor via a worm gear assembly. A first main air pipe, with its other end extending outside the guide hopper, is connected to the center of the end cover. The side wall of the first main air pipe is connected to equally spaced first branch pipes, and nozzles are connected to the first branch pipes. A nozzle is mounted on the horizontal plate. There is a pipe seat, and a second main air pipe is connected to the pipe seat. The side wall of the second main air pipe is equipped with equally spaced second branch pipes that extend into the guide plate. The second branch pipes are connected to nozzles. The second main air pipe is connected to a third branch pipe. The third branch pipe is connected to a valve seat with an airflow channel. A valve core with an air hole is slidably connected to the valve seat. A push rod is connected to the valve core. The push rod is located on a guide rail of a support connected to a cross plate. A ball head seat is slidably connected to the guide rail. A cylindrical cam with a first cam groove and driven by a sixth motor is slidably connected to the ball head seat.

[0008] The beneficial effects of this invention are as follows: This iron ore powder and antifreeze mixing and screening device achieves excellent technical results through multi-dimensional optimized design: the frame adopts a frame-type inclined structure, combined with multiple sets of support seats and rubber rollers driven by universal couplings, which not only ensures the stable rolling of the drum screen assembly, but also assists in material discharge by using the inclined angle, while reducing component wear and ensuring stable power transmission; the drum screen assembly innovatively adopts a double screen plate (first / second screen plate) structure with a double tube (first / second tube body) and a third tube body, and the second screen plate can be selected as a C-shaped tubular or prismatic structure, which eliminates agglomeration through secondary screening and collision with materials, greatly improving the uniformity of mixing iron ore powder and antifreeze and the dispersion effect of antifreeze; the connecting parts adopt an adjustable double-headed screw and pad design, which facilitates the screen plate Replacement and spacing adjustment; the feeding system is equipped with a vibrating motor, auger, and reciprocating feed pipes and wide strip screens to achieve material pre-dispersion, uniform feeding, and anti-clogging. The hopper angle is prevented from being blocked by the reciprocating motion of the flap and the convex rod; the cleaning system combines mechanical cleaning with brush rollers and dual-path timed / synchronous gas jet cleaning (the first main air pipe corresponds to the second screen plate, and the second main air pipe is controlled by a cylindrical cam to correspond to the first screen plate), doubly ensuring that the screen plates are free from material adhesion and blockage; at the same time, the guide plate and conveyor belt realize the centralized conveying of mixed materials, and the guide bin separates and discharges impurities to improve the purity of materials. The whole device realizes efficient operation of mixing, screening, conveying, and cleaning in an integrated manner. It is easy to operate and maintain, highly adaptable, and can stably meet the process requirements of iron ore powder and antifreeze mixing and screening. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of this application.

[0010] Figure 2 This is a schematic diagram of the main view structure of this application.

[0011] Figure 3 This is a schematic diagram of the three-dimensional structure of the frame.

[0012] Figure 4 This is a three-dimensional structural diagram of the drum screen assembly.

[0013] Figure 5 This is a schematic diagram of the three-dimensional structure of the first sieve plate.

[0014] Figure 6 This is a side view cross-sectional diagram of the guide plate.

[0015] Figure 7 This is a schematic diagram of the three-dimensional structure of the feed hopper.

[0016] Figure 8 This is a schematic diagram of the main structure of the third tube.

[0017] Figure 9 This is a schematic diagram of the front cross-sectional structure of the third tube.

[0018] Figure 10 This is a schematic diagram of the three-dimensional structure of the second sieve plate.

[0019] Figure 11 This is a three-dimensional structural diagram of the third tube and the second sieve plate.

[0020] Figure 12 This is a three-dimensional structural diagram of the reinforcing steel bars.

[0021] Figure 13 This is a schematic diagram of the front cross-sectional structure of the pad block.

[0022] Figure 14 This is a schematic diagram of the three-dimensional structure of the pad.

[0023] Figure 15 This is a top view of the brush roller structure.

[0024] Figure 16 This is a schematic diagram of the three-dimensional structure of the brush roller.

[0025] Figure 17 This is a schematic diagram of the main structure of the silo.

[0026] Figure 18 This is a schematic diagram of the front cross-sectional structure of the fourth tube.

[0027] Figure 19 This is a schematic diagram of the three-dimensional structure of the slide rail.

[0028] Figure 20 This is a schematic diagram of the three-dimensional structure of the cover plate.

[0029] Figure 21 This is a schematic diagram of the main cross-sectional structure of the feed tube.

[0030] Figure 22 This is a schematic diagram of the three-dimensional structure of a sieve.

[0031] Figure 23 This is a schematic diagram of the front cross-sectional structure of a long spring.

[0032] Figure 24 This is a schematic diagram of the three-dimensional structure of the flip panel.

[0033] Figure 25 This is a schematic diagram of the frontal cross-sectional structure of the first main trachea.

[0034] Figure 26 This is a schematic diagram of the main cross-sectional structure of the first branch pipe.

[0035] Figure 27 This is a three-dimensional structural diagram of the second main trachea.

[0036] Figure 28 This is a side view cross-sectional diagram of the second nozzle.

[0037] Figure 29 This is a three-dimensional structural diagram of a cylindrical cam.

[0038] Figure 30 This is a side view sectional diagram of the valve seat.

[0039] In the diagram: 1. Frame; 2. First support seat; 3. Base; 5. First bearing seat; 6. Roller; 7. Universal coupling; 8. Shaft; 9. Reducer; 10. Second support seat; 11. First motor; 12. Drum screen assembly; 13. Column; 14. Bottom beam; 15. Top beam; 16. Vertical beam; 17. First pipe body; 18. Second pipe body; 19. Circular track; 20. First retaining ring; 21. First support rod; 22. First dividing ring plate; 23. First outer support ring; 24. First screen plate; 25. First positioning bolt; 26. First... 27. Vertical rod; 28. Horizontal plate; 29. ​​Guide plate; 30. Discharge gap; 31. Second vertical rod; 32. Top plate; 33. Guide bin; 34. Connecting piece; 35. Third tube body; 36. Second retaining ring; 37. Second support rod; 38. Second dividing ring plate; 49. Second outer support ring; 40. Second screen plate; 41. Second positioning bolt; 42. Reinforcing bar; 43. Screw hole; 44. Double-ended screw; 45. Cut surface; 46. Spacer block; 47. Countersunk screw; 48. Second bearing seat; 59. Brush roller; 50. Chain drive; 51. Second motor; 53. Extension frame; 54. Base; 55. Support leg; 56. Slide rail; 57. Slide seat; 58. Carrier plate; 59. Third vertical rod; 60. Hopper; 61. Vibrating motor; 62. Fourth tube; 63. Push plate; 64. Telescopic rod; 65. Third motor; 66. Spiral auger; 67. End cap; 68. Discharge port; 69. Cover plate; 70. First circular opening; 71. Sliding column; 72. Return spring; 73. Panel; 74. Second circular opening; 75. Material tube; 76. Screen; 77. Third bearing seat; 78. Rotating shaft; 79. Fourth motor; 8 0. First cam; 81. Spring seat; 82. Long spring; 83. Protruding rod; 84. Flip plate; 85. Worm gear assembly; 86. Fifth motor; 87. First main air pipe; 88. First branch pipe; 89. First nozzle; 90. Pipe seat; 91. Second main air pipe; 92. Second branch pipe; 93. Second nozzle; 94. Third branch pipe; 95. Valve seat; 96. Airflow channel; 97. Valve core; 98. Air hole; 99. Push rod; 100. Support; 101. Ball head seat; 102. Cylindrical cam; 103. Sixth motor; 104. Guide rail. Detailed Implementation

[0040] The embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms “first,” “second,” “third,” “fourth,” “fifth,” “sixth,” “seventh,” “eighth,” “ninth,” and “tenth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] like Figure 1 and Figure 2As shown in Embodiment 1, a screening device for mixing iron ore powder and antifreeze includes a frame 1, the top surface of which is inclined at an angle of 2°-10°; a first support 2 on the top surface of the frame 1, with two first support 2s forming a group, and at least two groups of first support 2s are provided on the frame 1; a base 3 is connected to the first support 2, with two bases 3 arranged symmetrically, and a first bearing seat 5 is fixed to the base 3 by bolts, and a roller 6 is rotatably connected to the first bearing seat 5, the wheel surface of the roller 6 being made of rubber, and the shaft end of the roller 6 being connected to... A universal coupling 7 is connected to the machine, with a shaft 8 connected to the other end of the universal coupling 7. A reducer 9 is connected to the free end of the shaft 8. The reducer 9 is mounted on a second support 10, which is connected to the frame 1. The reducer 9 is driven by a first motor 11, which transmits power to the reducer 9 via belt drive. The first motor 11 is mounted on the frame 1. A drum screen assembly 12 is rotatably connected to a roller 6. The drum screen assembly 12 is used to improve the uniformity of mixing iron ore powder and antifreeze. The mixed antifreeze and iron ore powder are discharged from the screen holes of the drum screen assembly 12. The technical problems that can be solved are: poor mixing uniformity and low screening efficiency in the existing iron ore powder and antifreeze mixing process, inability to achieve integrated mixing and screening operations, and difficulty in centralized conveying of discharged materials. Movement Process: The first motor 11 starts, transmitting power to the reducer 9 via belt drive. The reducer 9 drives the shaft 8 to rotate, and the shaft 8 drives the roller 6 to rotate via the universal coupling 7. The roller 6 drives the drum screen assembly 12 to rotate. After the iron ore powder and antifreeze enter the drum screen assembly 12, they are mixed as the drum screen assembly 12 rotates. The mixed material is then discharged from the screen holes of the drum screen assembly 12. Beneficial Effects: The top of the frame 1 is tilted (2°-10°), which, in conjunction with the rotation of the drum screen assembly 12, improves the uniformity of mixing of iron ore powder and antifreeze, and also assists in material discharge using the tilt angle. The rubber roller 6 reduces wear on the drum screen assembly 12, and the universal coupling 7 can adapt to angular deviations during transmission, ensuring stable power transmission and enabling simultaneous mixing and screening, thus improving operating efficiency.

[0045] like Figure 3As shown, as an optimization of Embodiment 1, the frame 1 includes four uprights 13 arranged symmetrically. A bottom beam 14 is connected to the lower side wall of each upright 13. The bottom beam 14 is horizontally arranged, and the bottom beam 14 and the uprights 13 form a frame structure. A top beam 15 is connected to the top surface of each upright 13. The top beam 15 is inclined and forms a frame structure with the uprights 13. A first support seat 2 is installed on the top beam 15, and vertical beams 16 arranged at equal intervals connect the top beam 15 and the bottom beam 14. The technical problem that can be solved is that the existing frame 1 has poor structural stability, cannot stably support components such as the drum screen assembly 12, and the installation positions of the components are unclear, easily leading to deformation of the frame 1 and affecting equipment operation. Beneficial effects: The frame structure (column 13, bottom beam 14, top beam 15, vertical beam 16) greatly improves the structural stability and load-bearing capacity of the frame 1, and can stably support the drum screen assembly 12, motor, reducer 9 and other components, avoiding deformation of the frame 1 during equipment operation; the inclined arrangement of the top beam 15 provides a foundation for the subsequent installation of the drum screen assembly 12 and the inclined discharge of materials, and the clear installation position of the components facilitates equipment assembly and maintenance.

[0046] like Figure 4 and Figure 5As shown, as an optimization of Embodiment 1, the drum screen assembly 12 includes a first tube 17 and a second tube 18, which are symmetrically arranged. An annular track 19 is connected to the outer walls of the first tube 17 and the second tube 18, and the annular track 19 is located at the inner port of the first tube 17. The annular track 19 is adapted to the roller 6. A first baffle ring 20 is connected to the outer ports of the first tube 17 and the second tube 18. First support rods 21, arranged at equal angles, are connected to the inner walls of the first tube 17 and the second tube 18. The first support rod 21 forms a ring structure. A first dividing ring plate 22 is connected to the outer wall of the first support rod 21, and a first outer support ring 23 is connected to the outer wall of the first support rod 21. Two first outer support rings 23 form a group, located between the first dividing ring plates 22. A first screen plate 24 is installed on the first outer support ring 23. The first screen plate 24 is used to screen iron ore powder and antifreeze, ensuring uniform dispersion of the antifreeze. The first screen plate 24 is C-shaped. Two first screen plates 24 are fixed by first positioning bolts 25, forming a tubular screening structure. The technical problems it solves are: existing drum screens have a simple structure, limited screening area, insufficient screening of iron ore powder and antifreeze after mixing, uneven dispersion of the antifreeze, and inconvenient installation, disassembly, and maintenance of the screen plates. Movement Process: The drum screen assembly 12 is connected to the rollers 6 via an annular track 19, and rotates synchronously with the rollers 6. After the iron ore powder and antifreeze enter the drum screen assembly 12, they are screened by the rotating first screen plate 24 within the space formed by the first tube 17 and the second tube 18. At the same time, the first support rod 21, the first partition ring plate 22, and the first outer support ring 23 ensure the stable fixation of the first screen plate 24. The two C-shaped first screen plates 24 are fixed by the first positioning bolts 25 to form a tubular screening structure, ensuring the continuous screening process. Beneficial Effects: The annular track 19 is compatible with the rollers 6, ensuring the smooth rotation of the drum screen assembly 12; the first screen plate 24 adopts a C-shaped structure and is fixed by bolts, which facilitates installation, disassembly, maintenance, and replacement; the support structure composed of several first support rods 21, first partition ring plates 22, and first outer support rings 23 improves the structural strength of the first screen plate 24 and prevents screen plate deformation; the tubular screening structure increases the screening area, making the iron ore powder and antifreeze more fully screened and improving the uniformity of antifreeze dispersion.

[0047] like Figure 6 and Figure 7As shown, as an optimization of Embodiment 1, the top beam 15 of the frame 1 is connected to a first vertical rod 26 arranged at equal intervals. A horizontal plate 27 is connected to the upper end of the first vertical rod 26, and the horizontal plate 27 is located between two annular tracks 19. A guide plate 28 is connected to the horizontal plate 27, which concentrates the uniformly mixed material in the middle. A discharge gap 29 is left between the two guide plates 28 on both sides. A conveyor belt can be arranged below the discharge gap 29 to deliver the mixed material to the hopper. A second vertical rod 32 is connected to the top beam 15 of the frame 1, and a top plate 33 is connected to the upper end of the second vertical rod 32. The top plate 33 is U-shaped, and a guide bin 34 is connected to the bottom surface of the top plate 33, which allows impurities in the iron ore powder to be discharged in a concentrated manner. The technical problems that can be solved are: the mixed and screened material is easily dispersed, making it difficult to collect and transport, and the impurities in the iron ore powder cannot be effectively separated and discharged, affecting the purity of the material. Movement Process: After the uniformly mixed material is discharged from the screen holes of the drum screen assembly 12, it falls onto the guide plate 28. The guide plate 28 guides the material to the discharge gap 29 in the middle. The conveyor belt below the discharge gap 29 transports the material to the hopper. Impurities in the iron ore powder cannot pass through the screen holes and are carried into the guide bin 34 as the drum screen assembly 12 rotates. The guide bin 34 collects and discharges the impurities. Beneficial Effects: The guide plate 28 achieves centralized guidance of the material, and the discharge gap 29, in conjunction with the conveyor belt, facilitates continuous collection and transportation of the material, improving material transfer efficiency. The guide bin 34 effectively collects and discharges impurities in the iron ore powder, improving the purity of the mixed material and meeting the material quality requirements of subsequent production.

[0048] like Figure 8 and Figure 9As shown, as an optimization of Embodiment 1, a third pipe 36 is fixed to the inner wall of the first pipe 17 and the second pipe 18 by a connector 35. The outer port of the third pipe 36 protrudes outside the first pipe 17 (second pipe 18), and a second baffle ring 37 is connected to the outer port of the third pipe 36. A second support rod 38 arranged at equal angles is connected to the inner side of the third pipe 36. Several second support rods 38 form a ring structure. A second partition ring plate 39 is connected to the outer wall of the second support rod 38. A second outer support ring 40 is connected to the outer wall of the second support rod 38. Two second outer support rings 40 form a group. A group of second outer support rings 40 is located between the second partition ring plates 39. A second sieve plate 41 is installed on the second outer support ring 40. The second sieve plate 41 is used to screen iron ore powder and antifreeze to further improve the uniform dispersion of antifreeze. Technical problems that can be solved: Single screening cannot meet the requirement of sufficient mixing and dispersion of iron ore powder and antifreeze, making it difficult to eliminate agglomerated materials, and the fixed screen plate structure cannot be adjusted according to material characteristics. Movement process: After preliminary screening and mixing by the first screen plate 24, the iron ore powder and antifreeze enter the third tube 36 and are further screened and mixed by the second screen plate 41 as the drum screen assembly 12 rotates. If a prismatic screening structure (such as composed of 10 plate-shaped second screen plates 41) is used, the materials will collide and break up agglomerated materials when rotating within the prismatic space. Beneficial effects: The double screen plate (first screen plate 24 + second screen plate 41) structure achieves secondary screening and mixing, further improving the uniformity of antifreeze dispersion; the prismatic screening structure eliminates agglomeration through material collision, improving the mixing quality; the second screen plate 41 can adopt a C-shaped or plate-shaped structure, which can be adjusted according to material characteristics, enhancing the applicability of the equipment.

[0049] like Figure 10 As shown, the second sieve plate 41 is C-shaped, and the two second sieve plates 41 are fixed by the second positioning bolts 42, forming a tubular screening structure.

[0050] like Figure 11 As shown, a modified structure of the second screen plate 41 is proposed. The second screen plate 41 is plate-shaped, and adjacent second screen plates 41 are fixed by second positioning bolts 42. For example, 10 second screen plates 41 are used to form a decaprism-shaped screening structure. The prism-shaped screening causes the material to collide, which can eliminate agglomerated material.

[0051] like Figures 12-14As shown, as an optimization of Embodiment 1, firstly, the connector 35 uses steel bars 43, the two ends of which are welded and fixed to the first pipe body 17 and the third pipe body 36, and the two ends of which are welded and fixed to the second pipe body 18 and the third pipe body 36; in order to facilitate the replacement of the second screen plate 41, an improved connector 35 is proposed; the pipe walls of the first pipe body 17 and the third pipe body 36 are provided with corresponding screw holes 44, and the pipe walls of the second pipe body 18 and the third pipe body 36 are provided with corresponding screw holes 44; the connector 35 includes a double-ended screw 45, which passes through the screw hole 44, and the side wall of the double-ended screw 45 has a cut surface 46, on which a pad 47 is fastened. The number of pads 47 can be adjusted according to the interval between the first pipe body 17 and the third pipe body 36. The shape of the pad 47 is C-shaped, and the opposite pads 47 are fixed by countersunk screws 48. Technical problem solved: The need to disassemble and weld the structure when replacing the second screen plate 41, resulting in cumbersome operation. Beneficial effects: No welding required, disassembly and installation are simple, significantly reducing the difficulty of replacing the second screen plate 41 and decreasing equipment maintenance time and costs.

[0052] like Figure 15 and Figure 16 As shown, as an optimization of Embodiment 1, a second bearing seat 49 is installed on the top beam 15. Two second bearing seats 49 form a group, and a brush roller 50 is rotatably connected to the second bearing seat 49. The brush roller 50 is used to clean the material on the drum screen assembly 12. The brush roller 50 is connected to a second motor 52 via a chain drive 51, and the second motor 52 is located on the top beam 15. The technical problem that can be solved is that during the screening process of the drum screen assembly 12, material easily adheres to the surface of the screen plate, causing screen hole blockage and affecting screening efficiency and subsequent material mixing effect. Movement process: The second motor 52 starts and drives the brush roller 50 to rotate via the chain drive 51. The brush roller 50 contacts the surface of the drum screen assembly 12, and while the drum screen assembly 12 is rotating, the brush roller 50 cleans the material adhering to its surface. Beneficial effects: The rotation of the brush roller 50 can effectively remove the attached material from the surface of the drum screen assembly 12, prevent the screen holes from clogging, and ensure stable screening efficiency; the chain drive 51 reliably transmits power, adapts to the movement coordination between the brush roller 50 and the drum screen assembly 12, reduces equipment failures, and extends the service life of the screen plate.

[0053] like Figures 17-19As shown, as an optimization of Embodiment 1, an extension frame 53 is connected to the frame 1. The top surface of the extension frame 53 is inclined and flush with the top surface of the frame 1. A base 54 is connected to the extension frame 53. The bottom surface of the base 54 has four legs 55, which are connected to the extension frame 53. A slide rail 56 is connected to the top surface of the base 54. Two slide rails 56 are symmetrically arranged. A slide block 57 is slidably connected to the slide rail 56. A carrier plate 58 is connected to the slide block 57. Two symmetrically arranged third vertical rods 59 are installed on the carrier plate 58. A hopper 60 is connected to the top surface of the third vertical rod 59. The hopper 60 is conical in shape, and its sidewalls are equipped with... A vibrating motor 61 is included. A fourth tube 62 is connected to the lower end of the hopper 60. A push plate 63 is connected to the side wall of the fourth tube 62, driven by a telescopic rod 64, which is connected to the base 54. A third motor 65 is connected to one end of the fourth tube 62, with a spiral auger 66 connected to the shaft end of the third motor 65. An end cap 67 is connected to the other end of the fourth tube 62, rotating with the spiral auger 66. A discharge port 68 is provided on the side wall of the fourth tube 62, extending into the drum screen assembly 12. The fourth tube 62 is coaxially arranged with the first screen plate 24 (second screen plate 41), and its diameter is smaller than that of the third tube 36. The technical problems that can be solved are: the existing feeding method easily leads to material accumulation, uneven feeding, and inability to control the feeding speed, affecting the mixing and screening effect of the drum screen assembly 12, and the hopper 60 is prone to clogging. Movement Process: Iron ore powder and antifreeze are poured into hopper 60. Vibration motor 61 starts to vibrate hopper 60 to prevent material accumulation. Third motor 65 drives spiral auger 66 to rotate. Push plate 63, driven by telescopic rod 64, adjusts the position of fourth tube 62. Material enters fourth tube 62 from the lower port of hopper 60 and is conveyed to discharge port 68 by spiral auger 66. Discharge port 68 evenly feeds material into drum screen assembly 12. Slide 57 can slide along slide rail 56 to adjust the overall position of hopper 60 and fourth tube 62 to adapt to different feeding requirements. Beneficial Effects: Vibration motor 61, in conjunction with spiral auger 66, achieves uniform and stable material feeding, avoiding material accumulation and hopper 60 blockage. Telescopic rod 64 and slide rail 56 can adjust the feeding position and speed to adapt to the operating state of drum screen assembly 12, ensuring stable mixing and screening effect. Conical hopper 60 increases feeding capacity and improves feeding efficiency.

[0054] like Figures 20-22As shown, as an optimization of Embodiment 1, the upper port of the hopper 60 is connected to a cover plate 69, and the center of the cover plate 69 has a first circular opening 70; four symmetrically arranged sliding columns 71 are installed on the top surface of the cover plate 69, and a return spring 72 is sleeved on the side wall of the sliding column 71. A panel 73 is slidably connected to the sliding column 71, and the panel 73 is elastically connected to the return spring 72. The center of the panel 73 has a second circular opening 74, and a material pipe 75 is installed on the second circular opening 74. The lower end of the material pipe 75 extends into the hopper 60. A screen 76, which is a wide strip, is fixed inside the feed pipe 75 by bolts. The screens 76 are arranged at equal angular intervals from top to bottom. A third bearing seat 77 is installed on the cover plate 69, and a rotating shaft 78 is rotatably connected to the third bearing seat 77. The rotating shaft 78 is driven by a fourth motor 79. A first cam 80 is installed on the rotating shaft 78, and the first cam 80 is tactilely connected to the panel 73. The first cam 80 causes the feed pipe 75 to reciprocate up and down, dispersing the iron ore powder and preventing blockage of the hopper 60. This solves the technical problem of material agglomeration upon entering the hopper 60, leading to poor feeding and easy blockage of the feed pipe 75, thus failing to achieve material pre-dispersion. Movement Process: The fourth motor 79 drives the rotating shaft 78 to rotate, which in turn drives the first cam 80 to roll. The first cam 80 pushes the panel 73 to move up and down along the sliding column 71. The panel 73 drives the material pipe 75 to reciprocate up and down. The material enters through the material pipe 75 and is initially screened and dispersed by the wide strip screen 76. The reciprocating motion of the material pipe 75 further disperses the material. The return spring 72 assists the panel 73 and the material pipe 75 in resetting. Beneficial Effects: The reciprocating motion of the material pipe 75, combined with the wide strip screen 76, achieves pre-dispersion and initial screening of the material, preventing material agglomeration. The return spring 72 ensures stable movement of the material pipe 75, reduces the risk of blockage, improves feeding smoothness, and provides a uniform material base for subsequent mixing and screening.

[0055] like Figure 23 and Figure 24As shown, as an optimization of Embodiment 1, the inner wall of the hopper 60 is connected to a spring seat 81, with two spring seats 81 forming a group. The spring seats 81 are located at the included angle of the hopper 60. The upper spring seat 81 is connected to a long spring 82, and the lower end of the long spring 82 is connected to a protruding rod 83. The protruding rod 83 is slidably connected to the lower spring seat 81. The outlet section of the hopper 60 is rotatably connected to a flap 84, which is used to push the protruding rod 83 to generate reciprocating motion, preventing material from accumulating at the included angle of the hopper 60. The flap 84 is connected to a fifth motor 86 through a worm gear assembly 85. The technical problem that can be solved is that material easily accumulates at the included angle of the hopper 60, leading to material waste, and the accumulated material easily blocks the outlet of the hopper 60, affecting the feeding efficiency. Movement Process: The fifth motor 86 drives the flap 84 to rotate via the worm gear assembly 85. When the flap 84 rotates, it pushes the convex rod 83 to slide along the lower spring seat 81. The convex rod 83 stretches or compresses the long spring 82. The elasticity of the long spring 82 causes the convex rod 83 to reset after being pushed by the flap 84. The reciprocating motion of the convex rod 83 cleans the material stuck at the angle of the hopper 60. Beneficial Effects: The reciprocating motion of the flap 84 and the convex rod 83 can effectively clean the material stuck at the angle of the hopper 60, avoiding material waste and clogging of the hopper 60.

[0056] like Figure 25 and Figure 26 As shown, as an optimization of Embodiment 1, the center of the end cap 67 is connected to a first main air pipe 87, and the other end of the first main air pipe 87 extends to the outside of the guide hopper 34. The first main air pipe 87 and the guide hopper 34 are not fixedly connected, which ensures that the two do not cause structural interference when the end cap 67 is displaced. The side wall of the first main air pipe 87 is connected to a first branch pipe 88 arranged at equal intervals. A first nozzle 89 is connected to the first branch pipe 88. The first nozzle 89 is opened at regular intervals to clean the material on the second screen plate 41. Technical problem solved: The surface of the second screen plate 41 is prone to material adhesion, and long-term accumulation affects the screening efficiency and screen plate life. Movement process: The air source of the first main air pipe 87 is opened at regular intervals. The gas is transported to the first nozzle 89 through the first branch pipe 88. The first nozzle 89 sprays gas onto the surface of the second screen plate 41 to blow away the material adhering to the second screen plate 41. Beneficial effects: Gas jet cleaning can remove the attached material on the surface of the second screen plate 41 and prevent screen hole clogging; the timed start design can adjust the cleaning frequency according to the material attachment, which can not only ensure the cleaning effect, but also avoid energy waste and extend the service life of the second screen plate 41.

[0057] like Figures 27-30As shown, as an optimization of Embodiment 1, a pipe seat 90 is installed on the horizontal plate 27, and a second main air pipe 91 is connected to the pipe seat 90. Second branch pipes 92, arranged at equal intervals, are installed on the side wall of the second main air pipe 91, extending into the guide plate 28. A second nozzle 93 is connected to the second branch pipe 92, and the second nozzle 93 opens periodically to clean the material on the first screen plate 24. A third branch pipe 94 is connected to the second main air pipe 91, and a valve seat 95 is connected to the third branch pipe 94. The valve seat 95 has an airflow channel 96. A valve core 97 is slidably connected to a valve seat 95. The valve core 97 has an air hole 98. When the air hole 98 is aligned with the airflow channel 96, the airflow is open. A push rod 99 is connected to the valve core 97 and is mounted on a guide rail 104. The guide rail 104 is connected to a support 100, which is connected to a horizontal plate 27. A ball head seat 101 is slidably connected to the guide rail 104, and a cylindrical cam 102 is slidably connected to the ball head seat 101. The cylindrical cam 102 has a first cam 80 groove and is driven by a sixth motor 103. The technical problem that can be solved is the incomplete cleaning of material adhering to the surface of the first screen plate 24. Movement Process: The sixth motor 103 drives the cylindrical cam 102 to rotate. The first cam 80 groove of the cylindrical cam 102 drives the ball head seat 101 to slide along the guide rail 104. The ball head seat 101 pushes the push rod 99 and the valve core 97 to slide along the valve seat 95. When the air hole 98 on the valve core 97 is aligned with the airflow channel 96 of the valve seat 95, the air path is opened. The gas is transported to the second nozzle 93 through the third branch pipe 94, the second main air pipe 91, and the second branch pipe 92, and sprayed onto the first screen plate 24 to clean the material. Beneficial Effects: The second nozzle 93 cooperates with the brush roller 50 to form a double cleaning, further preventing the screen holes of the first screen plate 24 from clogging and ensuring stable screening efficiency.

[0058] Although the present invention has been described in detail with reference to the foregoing examples, those skilled in the art can still make and 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 invention should be included within the protection scope of the present invention.

Claims

1. A screening device for mixing iron ore powder with antifreeze, characterized in that, The machine includes a frame (1), the top surface of which is inclined; a first support seat (2) is provided on the top surface of the frame (1); a base (3) is connected to the upper end of the first support seat (2), a first bearing seat (5) is provided on the upper end of the base (3), a roller (6) is rotatably connected to the first bearing seat (5), a universal coupling (7) is connected to the shaft end of the roller (6), a shaft (8) is connected to the other end of the universal coupling (7), a reducer (9) is connected to the free end of the shaft (8) at the upper end of the second support seat (10), the second support seat (10) is connected to the frame (1); the reducer (9) is driven by a first motor (11) on the frame (1); two rollers (6) are a group, and a drum screen assembly (12) for mixing iron ore powder and antifreeze is rolled on the two groups of rollers (6), and the mixed material is discharged from the screen holes of the drum screen assembly (12). The frame (1) is connected to an extension frame (53); the extension frame (53) is connected to a base (54); a moving mechanism is installed on the top surface of the base (54), and a conical hopper (60) is installed on the moving mechanism; a feeding mechanism for feeding material to the drum screen assembly (12) is connected to the lower end of the hopper (60); a spring seat (81) is connected at the included angle of the inner wall of the hopper (60), two spring seats (81) form a group, the upper spring seat (81) is connected to a long spring (82), the lower end of the long spring (82) is connected to a protruding rod (83), and the protruding rod (83) is slidably connected to the lower spring seat (81); a flap (84) is rotatably connected to the outlet section of the hopper (60), and the flap (84) is used to push the protruding rod (83) to generate reciprocating motion; the flap (84) is connected to a fifth motor (86) through a worm gear assembly (85).

2. The screening device for mixing iron ore powder and antifreeze according to claim 1, characterized in that, The frame (1) includes four symmetrically arranged columns (13). The lower side wall of the columns (13) is connected to a horizontally arranged bottom beam (14), and the bottom beam (14) and the columns (13) form a frame structure. The top surface of the columns (13) is connected to an inclined top beam (15), and the top beam (15) and the columns (13) form a frame structure. The top end of the top beam (15) is equipped with a first support seat (2), and the top beam (15) and the bottom beam (14) are connected by vertical beams (16) arranged at equal intervals.

3. The screening device for mixing iron ore powder and antifreeze according to claim 1, characterized in that, The drum screen assembly (12) includes a first tube (17) and a second tube (18) symmetrically arranged along the centerline of the inclined direction of the top surface of the frame (1). The outer walls of both the first tube (17) and the second tube (18) are connected to an annular track (19), and the annular track (19) is located at the inner port of each tube near the center of the drum screen assembly (12). The outer ports of the first tube (17) and the second tube (18) are connected to a first baffle ring (20). The inner walls of the first tube (17) and the second tube (18) are connected to first support rods (21) arranged at equal angles. The support rods (21) are spaced at an angle of 18°. Several first support rods (21) form a ring structure. The outer side wall of the first support rod (21) is connected to the first partition ring plate (22). The outer side wall of the first support rod (21) is connected to the first outer support ring (23). Two first outer support rings (23) form a group. A group of first outer support rings (23) is located between the first partition ring plates (22). A first screen plate (24) for screening materials is installed on the first outer support ring (23). The first screen plate (24) is C-shaped. Two first screen plates (24) are fixed by the first positioning bolt (25) to form a tubular screening structure.

4. The screening device for mixing iron ore powder and antifreeze according to claim 3, characterized in that, The top beam (15) of the frame (1) is connected to a first vertical rod (26) arranged at equal intervals. The upper end of the first vertical rod (26) is connected to a horizontal plate (27) located between two circular tracks (19). The horizontal plate (27) is connected to a guide plate (28) for concentrating materials. A discharge gap (29) is left between the two guide plates (28). The top beam (15) of the frame (1) is connected to a second vertical rod (32). The upper end of the second vertical rod (32) is connected to a top plate (33). The bottom surface of the top plate (33) is connected to a guide bin (34) for concentrating and discharging impurities.

5. The screening device for mixing iron ore powder and antifreeze according to claim 3, characterized in that, The inner walls of the first tube (17) and the second tube (18) are fixed with a third tube (36) by a connector (35). The outer port of the third tube (36) protrudes outside the first tube (17) and the second tube (18). The outer port of the third tube (36) is connected to a second baffle ring (37). The inner side of the third tube (36) is connected to a second support rod (38) arranged at equal angles. The second support rods (38) are spaced at 36° intervals. Several second support rods (38) form a ring structure. The outer wall of the second support rod (38) is connected to a second partition ring plate (39). The outer wall of the second support rod (38) is connected to a second outer support ring (40). Two second outer support rings (40) form a group. A group of second outer support rings (40) is located between the second partition ring plates (39). A second screen plate (41) is installed on the second outer support ring (40). The second screen plate (41) is used to screen iron ore powder and antifreeze.

6. The screening device for mixing iron ore powder and antifreeze according to claim 5, characterized in that, The second screen plate (41) is C-shaped and two of them are fixed by the second positioning bolt (42) to form a tubular screening structure; or the second screen plate (41) is plate-shaped and adjacent second screen plates (41) are fixed by the second positioning bolt (42) to form a prismatic screening structure.

7. The screening device for mixing iron ore powder and antifreeze according to claim 5, characterized in that... The first tube (17) and the third tube (36) have corresponding screw holes (44) on their walls. The second tube (18) and the third tube (36) have corresponding screw holes (44) on their walls. The connector (35) includes a double-ended screw (45) that passes through the screw hole (44). The double-ended screw (45) has a cut surface (46) on its side wall. A C-shaped pad (47) is fastened to the cut surface (46). The two symmetrical pads (47) are fixed by countersunk screws (48).

8. The screening device for mixing iron ore powder and antifreeze according to claim 2, characterized in that, The top beam (15) is equipped with a second bearing seat (49), and the two second bearing seats (49) are rotatably connected to a brush roller (50) for cleaning the drum screen assembly (12); the brush roller (50) is connected to a second motor (52) on the top beam (15) via a chain drive (51).

9. The screening device for mixing iron ore powder and antifreeze according to claim 1, characterized in that, The moving mechanism includes slide rails (56) mounted on the base (54), slide blocks (57) slidably connected to the two slide rails (56), a carrier plate (58) connected to the slide blocks (57), a third vertical rod (59) mounted on the carrier plate (58), and the top surface of the third vertical rod (59) used to mount the hopper (60); the feeding mechanism includes a fourth tube (62) connected to the hopper (60); a push plate (63) is connected to the lower side wall of the fourth tube (62), and the push plate (63) is located in the hopper (60). At the connection with the fourth tube (62), the push plate (63) is driven by the telescopic rod (64), which is connected to the base (54); one end of the fourth tube (62) is connected to the third motor (65), the shaft end of the third motor (65) is connected to the spiral auger (66), and the other end of the fourth tube (62) is connected to the end cap (67) which is rotatably connected to the spiral auger (66); the side wall of the fourth tube (62) has a discharge port (68) that extends into the drum screen assembly (12).

10. The screening device for mixing iron ore powder and antifreeze according to claim 1, characterized in that, The upper end of the hopper (60) is connected to a cover plate (69) with a central first circular opening (70); four symmetrical sliding columns (71) are installed on the top surface of the cover plate (69), and a return spring (72) is sleeved on the side wall of the sliding column (71). A panel (73) is slidably connected to the sliding column (71) and elastically connected to the return spring (72). A second circular opening (74) is located in the center of the panel (73). A material pipe (75) with its lower end extending into the hopper (60) is installed on the second circular opening (74). A screen (76) is fixed inside the material pipe (75) by bolts. The screen (76) is a wide strip and the screens (76) are arranged at equal intervals from top to bottom. A third bearing seat (77) is installed on the cover plate (69). A rotating shaft (78) driven by a fourth motor (79) is rotatably connected to the third bearing seat (77). A first cam (80) is installed on the rotating shaft (78) and is tumbledly connected to the panel (73).

Images