Iron concentrate raw ore crushing and screening device

Abstract

The utility model relates to the technical field of fine iron powder production, and provides a fine iron powder raw ore crushing and screening device which comprises a shell, supporting legs are fixedly connected to the bottom end of a telescopic rod, a discharging pipe is fixedly connected to the middle position of the bottom end of the shell, and a screening plate is fixedly connected to the lower end of the inner wall of the shell. A guide table is fixedly connected to the inner wall of the shell above the sieve plate, a fixing groove is formed in the upper end of one side of the shell, a crushing roller is rotatably connected to the upper end of the interior of the shell, a speed reducer is movably connected to the upper end of one side of the shell, and a driving motor is fixedly connected to the lower end of the other side of the speed reducer; the top end of the shell is fixedly connected with a feeding hopper; according to the fine iron powder raw ore crushing and screening device, the adjusting assembly is arranged, a servo motor works, a threaded block slides to drive a speed reducer to slide, then the gap between the crushing rollers can be changed, materials of different specifications can be crushed and produced, and the applicability of the crushing and screening device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of iron concentrate production, and specifically, to a crushing and screening device for iron concentrate raw ore. Background Art

[0002] Iron concentrate is an iron ore powder processed through ore dressing, crushing, grinding and other processes. It is the main raw material for pellets and an important raw material for steel smelting. During its production and processing, it is necessary to crush the iron concentrate raw ore and screen out suitable materials for further production and processing operations.

[0003] The Chinese patent discloses a crushing and screening device for iron concentrate production, with the publication number CN215843405U. It is proposed in the text that "including a bottom plate, a placement groove is opened on the front side of the bottom plate, a collection box is slidably connected to the inner surface of the placement groove, a pull rod is fixedly connected to the front side of the collection box, both ends of the top of the bottom plate are fixedly connected with support plates, a connecting rod is fixedly connected to the middle of the support plates, a housing is fixedly connected to the middle of the connecting rod, a crushing motor is fixedly connected to the inside of the housing, a plurality of crushing blades are fixedly connected to the outer surface of the main shaft of the crushing motor, a cylinder is fixedly connected to the right side of the bottom plate, and a return spring is fixedly connected to the lower right side of the bottom plate. This crushing and screening device for iron concentrate production can facilitate the movement of this device and replace it to a suitable position through the structure of a fixed plate, a hydraulic cylinder, a fixed block and a moving wheel arranged on the bottom plate", but the prior art is inconvenient to adjust the gap between the crushing rolls, resulting in a fixed size specification of the crushed materials and being inconvenient to select different gaps according to actual needs to produce materials of different specifications, thereby leading to low applicability. Therefore, it is very necessary to design a crushing and screening device for iron concentrate raw ore. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a crushing and screening device for iron concentrate raw ore, which solves the problem in the related technology that it is inconvenient to adjust the gap between the crushing rolls to produce materials of different specifications.

[0005] The technical solution of the utility model is as follows:

[0006] An iron concentrate raw ore crushing and screening device, comprising a housing. A return material assembly is arranged on one side of the housing. The four circumferences of the bottom end of the housing are fixedly connected with telescopic rods, and the bottom ends of the telescopic rods are fixedly connected with supporting legs. A discharge pipe is fixedly connected at the middle position of the bottom end of the housing. A sieve plate is fixedly connected to the lower end of the inner wall of the housing. A return material groove extending to the outside of the housing is opened on one side of the top end of the sieve plate. A guiding platform is fixedly connected to the inner wall of the housing above the sieve plate. A fixing groove is opened at the upper end of one side of the housing. A crushing roller is rotatably connected to the upper end of the inside of the housing. A speed reducer is movably connected to the upper end of one side of the housing. One end of the speed reducer is fixedly connected to one end of the crushing roller. A driving motor is fixedly connected to the lower end of the other side of the speed reducer. An adjusting assembly is arranged on the side wall of the housing at the bottom end of the speed reducer. A feed hopper is fixedly connected to the top end of the housing.

[0007] The adjusting assembly includes an adjusting seat. The adjusting seat is fixedly connected to the upper end of one side of the housing. A servo motor is fixedly connected to the front surface of the adjusting seat. The output end of the servo motor extends into the inside of the adjusting seat and is fixedly connected with a positive and negative threaded rod through a coupling. Threaded blocks are threadedly connected to both ends of the surface of the positive and negative threaded rod. The top ends of the threaded blocks are fixedly connected to the bottom end of the speed reducer.

[0008] Preferably, a sliding structure is formed between the threaded block and the inside of the adjusting seat, and the cross-sectional shapes of the inside of the adjusting seat and the threaded block are convex.

[0009] Preferably, an auxiliary groove is opened at the upper end of the inner wall of the guiding platform. An auxiliary block is slidably connected to the inside of the auxiliary groove. The auxiliary block is rotatably connected to one end of the crushing roller.

[0010] Preferably, the return material assembly includes a return material cylinder. The return material cylinder is fixedly connected to one side of the housing. The lower end of one side of the return material cylinder is communicated with one side of the return material groove. A return material pipe is fixedly connected to the upper end of one side of the return material cylinder. One end of the return material pipe is communicated with the lower end of the inside of the feed hopper. A fixed motor is fixedly connected to the top end of the return material cylinder. The output end of the fixed motor extends into the inside of the return material cylinder and is fixedly connected with a spiral return material rod through a coupling.

[0011] Preferably, the inclination angle of the return material pipe with the horizontal direction is 30 degrees, and the shape of the return material pipe is cylindrical.

[0012] Preferably, the shape of the top view of the return material groove is an isosceles trapezoid, and the width of the cross-section of one side of the return material groove is smaller than the diameter of the cross-section of the return material cylinder.

[0013] Preferably, the cross-sectional shape of the guiding platform is a right trapezoid, and the length of the cross-section of the bottom opening of the guiding platform is smaller than the width of the sieve plate.

[0014] Preferably, a fixing block is fixedly connected to the top end of one side of the support leg, and sliding rods slidably matched with the fixing block are fixedly connected to the lower ends of both sides of the housing.

[0015] Preferably, a fixing spring is wound around the surface of the telescopic rod at the top end of the support leg, and the top end of the fixing spring is fixedly connected to the bottom end of the housing.

[0016] Preferably, guide plates are fixedly connected to both sides of the inner bottom wall of the housing, and the cross-section of the guide plate is in the shape of a right triangle.

[0017] Advantages of the present utility model:

[0018] 1. By providing an adjustment assembly, an auxiliary groove, an auxiliary block and a fixing groove, starting the servo motor drives the forward and reverse threaded rod to rotate, causing the threaded block to slide and drive the reducer to slide, and using the sliding of the auxiliary block inside the auxiliary groove, the crushing rollers slide synchronously and smoothly towards or away from each other, thereby changing the gap between the crushing rollers, enabling it to crush materials of different specifications, avoiding the limitations caused by the fixed gap between the crushing rollers, meeting the crushing requirements of different iron ore concentrate raw ores, and improving its applicability.

[0019] 2. By providing a return material assembly, the large-particle iron ore concentrate raw ore screened by the sieve plate can enter the inside of the return material cylinder through the return material groove. At this time, starting the fixed motor drives the spiral return material rod to rotate, causing the large-particle iron ore concentrate raw ore to be conveyed upwards and then returned to the inside of the feed hopper through the return material pipe, realizing automatic screening and return of materials, avoiding the excessive labor intensity of workers caused by the traditional need for manual re-collection and return of materials, and further improving the working efficiency of crushing the iron ore concentrate raw ore and enhancing its practicality. Description of the Drawings

[0020] The following further elaborates on the present utility model in detail in conjunction with the drawings and specific embodiments.

[0021] Figure 1 is the overall sectional structure schematic diagram of the present utility model;

[0022] Figure 2 is the overall structure schematic diagram of the present utility model;

[0023] Figure 3 is the exploded three-dimensional structure schematic diagram of the crushing roller of the present utility model;

[0024] Figure 4 is the enlarged partial sectional structure schematic diagram of the present utility model;

[0025] Figure 5 is the Figure 3 enlarged structure schematic diagram at A of the present utility model.

[0026] In the figure: 1. Return material assembly; 101. Fixed motor; 102. Return material pipe; 103. Screw return material rod; 104. Return material cylinder; 2. Guide table; 3. Return material trough; 4. Fixed block; 5. Leg; 6. Discharge pipe; 7. Guide plate; 8. Sieve plate; 9. Adjustment assembly; 901. Servo motor; 902. Adjusting seat; 903. Positive and negative threaded rod; 904. Threaded block; 10. Driving motor; 11. Reducer; 12. Crushing roller; 13. Shell; 14. Feed hopper; 15. Slide bar; 16. Auxiliary groove; 17. Auxiliary block; 18. Fixed groove; 19. Telescopic rod; 20. Fixed spring. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] The preferred embodiment of the iron concentrate raw ore crushing and screening device provided by the present invention is as Figures 1 to 5 shown: An iron concentrate raw ore crushing and screening device includes a shell 13. A return material assembly 1 is arranged on one side of the shell 13. Telescopic rods 19 are fixedly connected to the four surrounding sides of the bottom end of the shell 13. The bottom ends of the telescopic rods 19 are fixedly connected to legs 5. A discharge pipe 6 is fixedly connected to the middle position of the bottom end of the shell 13. A sieve plate 8 is fixedly connected to the lower end of the inner wall of the shell 13. A return material trough 3 extending to the outside of the shell 13 is opened on one side of the top end of the sieve plate 8. A guide table 2 is fixedly connected to the inner wall of the shell 13 above the sieve plate 8. A fixed groove 18 is opened at the upper end of one side of the shell 13. A crushing roller 12 is rotatably connected to the upper end of the inside of the shell 13. A reducer 11 is movably connected to the upper end of one side of the shell 13. One end of the reducer 11 is fixedly connected to one end of the crushing roller 12. A driving motor 10 is fixedly connected to the lower end of the other side of the reducer 11. An adjustment assembly 9 is arranged on the side wall of the shell 13 at the bottom end of the reducer 11. A feed hopper 14 is fixedly connected to the top end of the shell 13.

[0030] The adjustment component 9 includes an adjustment base 902. The adjustment base 902 is fixedly connected to the upper end of one side of the housing 13. A servo motor 901 is fixedly connected to the front surface of the adjustment base 902. The output end of the servo motor 901 extends into the adjustment base 902 and is fixedly connected to a left - right threaded rod 903 through a coupling. Threaded blocks 904 are threadedly connected to both ends of the surface of the left - right threaded rod 903. The top of the threaded block 904 is fixedly connected to the bottom end of the speed reducer 11. By starting the servo motor 901 to drive the left - right threaded rod 903 to rotate, the threaded block 904 slides to drive the speed reducer 11 to slide, so that the crushing rollers 12 slide towards or away from each other synchronously and smoothly, and thus the gap between the crushing rollers 12 can be changed, enabling the production of crushed materials of different specifications.

[0031] In this embodiment, a sliding structure is formed between the threaded block 904 and the inside of the adjustment base 902. The shapes of the cross - sections of the inside of the adjustment base 902 and the threaded block 904 are convex. By using the convex - shaped threaded block 904, the sliding in the adjustment base 902 is made more stable.

[0032] In this embodiment, an auxiliary groove 16 is opened at the upper end of the inner wall of the guiding platform 2. An auxiliary block 17 is slidably connected inside the auxiliary groove 16. The auxiliary block 17 is rotatably connected to one end of the crushing roller 12. By using the sliding of the auxiliary block 17 inside the auxiliary groove 16, the sliding adjustment of the crushing roller 12 is made more stable.

[0033] Embodiment 2

[0034] On the basis of Embodiment 1, a preferred embodiment of the iron ore concentrate raw ore crushing and screening device provided by the present utility model is as Figures 1 to 5 shown: The return - material component 1 includes a return - material cylinder 104. The return - material cylinder 104 is fixedly connected to one side of the housing 13. The lower end of one side of the return - material cylinder 104 communicates with one side of the return - material trough 3. A return - material pipe 102 is fixedly connected to the upper end of one side of the return - material cylinder 104. One end of the return - material pipe 102 communicates with the lower end inside the feed hopper 14. A fixed motor 101 is fixedly connected to the top end of the return - material cylinder 104. The output end of the fixed motor 101 extends into the return - material cylinder 104 and is fixedly connected to a spiral return - material rod 103 through a coupling. By starting the fixed motor 101 to drive the spiral return - material rod 103 to rotate, the large - particle iron ore concentrate raw ore is conveyed upwards and then returned to the inside of the feed hopper 14 through the return - material pipe 102, realizing automatic screening and return of materials, and avoiding the inconvenience of traditional manual re - collection of return materials.

[0035] In this embodiment, the inclination angle of the return - material pipe 102 with respect to the horizontal direction is 30 degrees. The shape of the return - material pipe 102 is cylindrical. By using the inclined return - material pipe 102, the large - particle iron ore concentrate raw ore for return can be returned to the inside of the feed hopper 14 more smoothly for further crushing operations.

[0036] In this embodiment, the shape of the top view of the return chute 3 is an isosceles trapezoid, and the width of the cross-section of one side of the return chute 3 is smaller than the diameter of the cross-section of the return cylinder 104. By using the isosceles trapezoid-shaped return chute 3, the large-particle iron ore concentrate screened by the sieve plate 8 can be discharged more smoothly into the return cylinder 104 for the return action.

[0037] Furthermore, the shape of the cross-section of the guiding platform 2 is a right trapezoid, and the length of the cross-section of the bottom opening of the guiding platform 2 is smaller than the width of the sieve plate 8. By using the right trapezoid-shaped guiding platform 2, the materials crushed by the crushing rollers 12 can fall more concentratedly onto the surface of the sieve plate 8 for screening.

[0038] Furthermore, a fixing block 4 is fixedly connected to the top end of one side of the support leg 5, and sliding rods 15 that are slidably matched with the fixing block 4 are fixedly connected to the lower ends of both sides of the housing 13. By using the sliding between the sliding rods 15 and the fixing block 4, it is convenient to make the housing 13 vibrate more smoothly up and down.

[0039] Furthermore, a fixing spring 20 is wound around the surface of the telescopic rod 19 at the top end of the support leg 5, and the top end of the fixing spring 20 is fixedly connected to the bottom end of the housing 13. By using the wound fixing spring 20, it is convenient for the housing 13 to shake due to the vibration generated by the crushing of the crushing rollers 12, and thus it is convenient for the vibration screening of the sieve plate 8.

[0040] In addition, guide plates 7 are fixedly connected to both sides of the inner bottom wall of the housing 13. The shape of the cross-section of the guide plates 7 is a right triangle. By using the right triangle-shaped guide plates 7, it is convenient to guide the screened materials and make them more smoothly and concentratedly discharged through the discharge pipe 6.

[0041] The working principle and usage process of the present utility model: First, start the servo motor 901 to drive the rotation of the left-right threaded rod 903. By using the threaded cooperation between the left-right threaded rod 903 and the threaded block 904, the threaded block 904 slides to drive the reducer 11 to slide, and by using the sliding of the auxiliary block 17 inside the auxiliary groove 16, the crushing rollers 12 slide synchronously and smoothly towards each other or in opposite directions, and thus the gap between the crushing rollers 12 can be changed, enabling it to crush materials of different specifications and improving its applicability;

[0042] Then, discharge the iron ore concentrate into the interior of the housing 13 from the feed hopper 14. At this time, start the drive motor 10, and drive the crushing rollers 12 to rotate relatively slowly through the reducer 11 to crush the iron ore concentrate. Then, the crushed iron ore concentrate is guided by the guiding platform 2 and discharged to the top of the sieve plate 8. At this time, screen it through the sieve plate 8. At the same time, the vibration generated by the operation of the crushing rollers 12, combined with the sliding of the telescopic rod 19 and the fixing spring 20, and the sliding of the sliding rod 15 and the fixing block 4, makes the housing 13 vibrate up and down to realize the vibration screening of the sieve plate 8, improving its screening effect, and the screened materials are guided by the guide plates 7 and discharged through the discharge pipe 6;

[0043] Meanwhile, the large-particle iron ore concentrate raw ore screened out by the sieve plate 8 can enter the interior of the return material cylinder 104 through the return material trough 3. At this time, start the fixed motor 101 to drive the spiral return material rod 103 to rotate, so that the large-particle iron ore concentrate raw ore is conveyed upward, and then returned to the interior of the feed hopper 14 through the return material pipe 102, realizing automatic screening and return of materials, avoiding the inconvenience of traditional manual re-collection of return materials, and improving the working efficiency of corresponding crushing and screening.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An iron ore concentrate crushing and screening device, characterized in that: The invention comprises a shell (13), a material return assembly (1) is arranged on one side of the shell (13), telescopic rods (19) are fixedly connected around the bottom end of the shell (13), the bottom end of the telescopic rods (19) is fixedly connected to a support leg (5), a discharge pipe (6) is fixedly connected at the middle position of the bottom end of the shell (13), a sieve plate (8) is fixedly connected to the lower end of the inner wall of the shell (13), a material return groove (3) extending to the outside of the shell (13) is opened on one side of the top end of the sieve plate (8), and a guide platform (3) is fixedly connected to the inner wall of the shell (13) above the sieve plate (8). 2) A fixing groove (18) is provided at the upper end of one side of the shell (13); a crushing roller (12) is rotatably connected to the upper end of the shell (13); a reducer (11) is movably connected to the upper end of one side of the shell (13); an upper end of one side of the reducer (11) is fixedly connected to one end of the crushing roller (12); a driving motor (10) is fixedly connected to the lower end of the other side of the reducer (11); an adjustment component (9) is provided on the side wall of the shell (13) at the bottom end of the reducer (11); and a feed hopper (14) is fixedly connected to the top end of the shell (13); The adjustment assembly (9) comprises an adjustment seat (902), the adjustment seat (902) being fixedly connected to the upper end of one side of the housing (13), a servo motor (901) being fixedly connected to the front side of the adjustment seat (902), an output end of the servo motor (901) extending into the interior of the adjustment seat (902) and being fixedly connected to a forward and reverse threaded rod (903) via a coupling, threaded blocks (904) being threadedly connected to the two ends of the surface of the forward and reverse threaded rod (903), and a top end of the threaded block (904) being fixedly connected to the bottom end of the reducer (11).

2. The iron ore concentrate crushing and screening device according to claim 1 is characterized in that: A sliding structure is formed between the threaded block (904) and the interior of the adjustment seat (902); the cross-sections of the interior of the adjustment seat (902) and the threaded block (904) are convex.

3. The iron ore concentrate crushing and screening device according to claim 1, characterized in that: An auxiliary groove (16) is provided at the upper end of the inner wall of the guide platform (2), an auxiliary block (17) is slidably connected inside the auxiliary groove (16), and the auxiliary block (17) is rotationally connected to one end of the crushing roller (12).

4. The iron ore concentrate crushing and screening device according to claim 1, characterized in that: The return material assembly (1) comprises a return material barrel (104), the return material barrel (104) being fixedly connected to one side of the housing (13), the lower end of one side of the return material barrel (104) being communicated with one side of the return material trough (3), the upper end of one side of the return material barrel (104) being fixedly connected to a return material pipe (102), one end of the return material pipe (102) being communicated with the lower end inside the feed hopper (14), the top end of the return material barrel (104) being fixedly connected to a fixed motor (101), the output end of the fixed motor (101) extending into the interior of the return material barrel (104) and being fixedly connected to a spiral return material rod (103) via a coupling.

5. The iron ore concentrate crushing and screening device according to claim 4, characterized in that: The inclination angle of the return pipe (102) to the horizontal direction is thirty degrees, and the shape of the return pipe (102) is cylindrical.

6. The iron ore concentrate crushing and screening device according to claim 1, characterized in that: The shape of the return material trough (3) in a top view is an isosceles trapezoid, and the width of a cross section on one side of the return material trough (3) is smaller than the diameter of a cross section of the return material cylinder (104).

7. The iron ore concentrate crushing and screening device according to claim 1, characterized in that: The cross-section of the guide platform (2) is in the shape of a right-angled trapezoid, and the length of the cross-section of the opening at the bottom end of the guide platform (2) is smaller than the width of the sieve plate (8).

8. The iron ore concentrate crushing and screening device according to claim 1, characterized in that: A top end of one side of the support leg (5) is fixedly connected to a fixing block (4), and lower ends of both sides of the housing (13) are fixedly connected to sliding rods (15) that slidably cooperate with the fixing block (4).

9. The iron ore concentrate crushing and screening device according to claim 1, characterized in that: A fixed spring (20) is wound around the surface of the telescopic rod (19) at the top end of the supporting leg (5), and the top end of the fixed spring (20) is fixedly connected to the bottom end of the housing (13).

10. The iron ore concentrate crushing and screening device according to claim 1, characterized in that: Material guide plates (7) are fixedly connected to both sides of the inner bottom wall of the shell (13); the cross-section of the material guide plates (7) is in the shape of a right triangle.

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