Mining blast furnace feeding and screening device

Abstract

The utility model discloses a mining blast furnace feeding screening device which comprises a bottom frame and a feeding box, the feeding box is arranged above the bottom frame, a vertical pulverizer is fixedly installed on the top face of the bottom frame and located above the feeding box through an installation frame, and a vibration motor is fixedly installed on the top face of the feeding box. A screening barrel is fixedly connected to the surface of the feeding box in a penetrating mode, and an auger is arranged in the screening barrel. The coal screening device has the advantages that the screening barrel and the feeding box are adopted, the auger is installed in the screening barrel, coal is fed into the screening barrel through the feeding opening and conveyed to the screening hole section through the auger, the vibration motor drives the feeding box to vibrate, then the screening barrel is driven to vibrate, the coal is screened through vibration, and the screening efficiency is improved. The coal meeting the particle size requirement penetrates through the screen holes and is put into the blast furnace through the discharging port, the coal not meeting the particle size requirement is discharged out of the screening barrel under conveying of the auger, automatic continuous screening is completed, the trouble of manual cleaning and taking out is omitted, and using convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal screening technology, specifically to a blast furnace feeding and screening device for mining. Background Technology

[0002] The coal required for blast furnace charging is relatively fine, and it is necessary to ensure that the coal contains impurities. At the same time, the coal needs to be relatively fine to ensure that it can burn completely. Therefore, screening machines are often used to screen the coal.

[0003] A search revealed application CN202022557341.2, entitled "Coal Screening Equipment for Blast Furnace Charging." This application addresses the problem that impurities in coal easily become stuck inside the screening machine during the screening process, making them difficult to remove. Furthermore, it fails to crush larger coal particles, resulting in less refined coal and affecting the screening efficiency. The application addresses this issue by using a hinge mechanism to control the extension and retraction of the hinge rod of the hinge cylinder. Through the hinge action of the double-ear seat and the single-ear seat, the rectangular box tilts back and forth due to vibration. The tension of the spring causes the slide cylinder to slide along the slide rod, which in turn causes the double-ear seat to slide along the rectangular slide hole, facilitating the slow vibration of the entire rectangular box. Through the hinge action of the double-ear seat and the single-ear seat, the rectangular box is tilted backward, opening the sealing cover, which facilitates the discharge of large particles of impurities remaining in the rectangular box along the slag discharge pipe. However, in actual use, this application requires the staff to frequently open the sealing cover to clean large particles of impurities, which not only causes the interruption of continuous work, but also causes tedious work and affects work efficiency. Further improvements can be made.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a mining blast furnace feeding and screening device, which has the advantages of being easy to use and having high working efficiency, thereby solving the problems mentioned in the background technology.

[0007] ( two ) Technical solution

[0008] To achieve the aforementioned advantages of ease of use and high work efficiency, the specific technical solution adopted by this utility model is as follows:

[0009] A blast furnace charging and screening device for mining includes a base frame and a charging box. The charging box is located above the base frame, and a vertical crusher is fixedly mounted on the top surface of the base frame above the charging box via a mounting bracket. A vibrating motor is fixedly mounted on the top surface of the charging box. A screening cylinder is fixedly connected through the surface of the charging box, and an auger is installed inside the screening cylinder. A drive motor is fixedly mounted at one end of the screening cylinder, and the output end of the drive motor is fixedly connected to one end of the auger. The other end of the auger is connected to the other end of the screening cylinder. The inner wall of the screen cylinder is rotatably connected. The bottom surface of the other end of the screen cylinder is provided with a discharge port, and the top surface of one end of the screen cylinder is provided with a feeding port and a return port. The return port is connected to the output end of the vertical crusher through a hose. The top surface of the other end of the base frame is fixedly installed with a hoist. The feeding end of the hoist extends to below the discharge port, and the discharge end of the hoist extends to above the feeding end of the vertical crusher. The surface of the screen cylinder is provided with screen holes inside the feeding box, and the bottom surface of the feeding box is provided with a discharge port.

[0010] Furthermore, a bracket is fixedly installed on the top surface of the base frame, and the top surface of the bracket is connected to the bottom surface of the loading box through a support spring.

[0011] Furthermore, multiple sets of support springs are arranged, and the two ends of the support springs are fixedly connected to the top surface of the bracket and the bottom surface of the feeding box, respectively.

[0012] Furthermore, the sieve holes are densely distributed in multiple sets and are evenly arranged.

[0013] Furthermore, a through hole is provided on the surface of the base frame directly below the discharge port, and the diameter of the through hole is larger than the diameter of the discharge port.

[0014] Furthermore, the mounting frame is located on the outside of the screening cylinder and the feeding box.

[0015] Furthermore, the bottom of the feeding box has a funnel-shaped structure, and the inner bottom surface of the feeding box is polished.

[0016] Furthermore, multiple sets of the vibration motors are arranged.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, this utility model provides a blast furnace charging and screening device for mining, which has the following beneficial effects:

[0019] (1) This utility model adopts a screening cylinder and a feeding box. The screening cylinder is equipped with an auger. Coal is fed into the screening cylinder through the feeding port and moved to the screen hole section by the conveying of the auger. The vibration motor drives the feeding box to vibrate, which in turn drives the screening cylinder to vibrate. The coal is screened by vibration. Coal that meets the particle size requirements passes through the screen holes and is fed into the blast furnace through the discharge port. Coal that does not meet the particle size requirements is discharged from the screening cylinder by the conveying of the auger, completing automatic continuous screening, saving the trouble of manual cleaning and removal, and improving the convenience of use.

[0020] (2) This utility model adopts an elevator and a vertical crusher. Coal that does not meet the particle size requirements is discharged from the discharge port and enters the elevator. After being lifted by the elevator, it slides into the vertical crusher. After being crushed twice by the vertical crusher, it is fed back into the screening cylinder through the hose to complete the automatic circulating crushing and screening, which further improves the convenience of use and work efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a mining blast furnace feeding and screening device proposed in this utility model;

[0023] Figure 2 This is a front view of a mining blast furnace charging and screening device proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the external structure of the feeding box proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the external structure of the screening cylinder proposed in this utility model.

[0026] In the picture:

[0027] 1. Base frame; 2. Feeding box; 3. Vibrating motor; 4. Screening cylinder; 5. Screw conveyor; 6. Discharge port; 7. Elevator; 8. Vertical crusher; 9. Support frame; 10. Support spring; 11. Discharge port; 12. Return port; 13. Hose; 14. Feeding port; 15. Drive motor; 16. Mounting frame; 17. Screen holes. Detailed Implementation

[0028] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0029] According to an embodiment of the present invention, a blast furnace charging and screening device for mining is provided.

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4 As shown, a blast furnace charging and screening device according to an embodiment of the present invention includes a base frame 1 and a charging box 2. The charging box 2 is arranged above the base frame 1, and a vertical crusher 8 is fixedly installed on the top surface of the base frame 1 above the charging box 2 via a mounting bracket 16. This is a common crushing structure. A vibrating motor 3 is fixedly installed on the top surface of the charging box 2. A screening cylinder 4 is fixedly connected through the surface of the charging box 2, and an auger 5 is arranged inside the screening cylinder 4. A drive motor 15 is fixedly installed at one end of the screening cylinder 4. The output end of the motor 15 is fixedly connected to one end of the auger 5, and the other end of the auger 5 is rotatably connected to the inner wall of the other end of the screening cylinder 4. A discharge port 6 is provided on the bottom surface of the other end of the screening cylinder 4, and a feeding port 14 and a return port 12 are respectively provided on the top surface of one end of the screening cylinder 4. The feeding port 14 is located outside the return port 12, and the return port 12 is connected to the output end of the vertical crusher 8 through a flexible hose 13. A hoist 7 is fixedly installed on the top surface of the other end of the base frame 1, and the feeding end of the hoist 7 extends to below the discharge port 6. Furthermore, the discharge end of the elevator 7 extends above the feed end of the vertical crusher 8. The surface of the screening cylinder 4 is provided with screen holes 17 inside the feeding box 2, and the bottom surface of the feeding box 2 is provided with a discharge port 11. Coal is fed into the screening cylinder 4 through the feeding port 14 and moved to the screen hole 17 section by the conveyor auger 5. The vibrating motor 3 drives the feeding box 2 to vibrate, which in turn drives the screening cylinder 4 to vibrate. The coal is screened by vibration. Coal that meets the particle size requirements passes through the screen holes 17 and is fed into the blast furnace through the discharge port 11. Coal that does not meet the particle size requirements is discharged from the screening cylinder 4 by the conveyor auger 5, completing automatic continuous screening. This eliminates the trouble of manual cleaning and removal, improving the convenience of use. At the same time, coal that does not meet the particle size requirements is discharged from the discharge port 6 and enters the elevator 7. After being lifted by the elevator 7, it slides down into the vertical crusher 8. After secondary crushing by the vertical crusher 8, it is fed back into the screening cylinder 4 through the hose 13, completing automatic cyclic crushing and screening, further improving the convenience of use and work efficiency.

[0031] In one embodiment, a bracket 9 is fixedly installed on the top surface of the base frame 1, and the top surface of the bracket 9 is connected to the bottom surface of the feeding box 2 through a support spring 10. Multiple sets of support springs 10 are arranged, and the two ends of the support spring 10 are fixedly connected to the top surface of the bracket 9 and the bottom surface of the feeding box 2, respectively. The support spring 10 plays a supporting role and does not affect the vibration of the feeding box 2.

[0032] In one embodiment, multiple sets of sieve holes 17 are densely distributed and uniformly arranged, and the sieve hole diameter matches the qualified particle size of coal.

[0033] In one embodiment, a through hole is provided on the surface of the base frame 1 directly below the discharge port 11, and the diameter of the through hole is larger than the diameter of the discharge port 11, so that the coal can be discharged through the through hole.

[0034] In one embodiment, the mounting bracket 16 is located outside the screening cylinder 4 and the feeding box 2 to avoid contact with the screening cylinder 4 and the feeding box 2.

[0035] In one embodiment, the bottom of the feeding box 2 is a funnel-shaped structure, and the inner bottom surface of the feeding box 2 is polished to facilitate the centralized discharge of coal.

[0036] In one embodiment, multiple sets of vibration motors 3 are arranged to improve the efficiency of vibration screening.

[0037] Working principle:

[0038] Coal is fed into the screening cylinder 4 through the feeding port 14 and moved to the screen hole 17 section by the conveyor auger 5. The vibrating motor 3 drives the feeding box 2 to vibrate, which in turn drives the screening cylinder 4 to vibrate. The coal is screened by vibration. Coal that meets the particle size requirements passes through the screen hole 17 and is fed into the blast furnace through the discharge port 11. Coal that does not meet the particle size requirements is discharged from the screening cylinder 4 by the conveyor auger 5, completing automatic continuous screening. This eliminates the trouble of manual cleaning and removal, and improves the convenience of use. At the same time, coal that does not meet the particle size requirements is discharged from the discharge port 6 and enters the elevator 7. After being lifted by the elevator 7, it slides down into the vertical crusher 8. After secondary crushing by the vertical crusher 8, it is fed back into the screening cylinder 4 through the hose 13, completing automatic cyclic crushing and screening, which further improves the convenience of use and work efficiency.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blast furnace charging and screening device for mining, characterized in that, The system includes a base frame (1) and a feeding box (2). The feeding box (2) is located above the base frame (1), and a vertical crusher (8) is fixedly installed on the top surface of the base frame (1) above the feeding box (2) via a mounting bracket (16). A vibrating motor (3) is fixedly installed on the top surface of the feeding box (2). A screening cylinder (4) is fixedly connected through the surface of the feeding box (2), and an auger (5) is installed inside the screening cylinder (4). A drive motor (15) is fixedly installed at one end of the screening cylinder (4). The output end of the drive motor (15) is fixedly connected to one end of the auger (5), and the other end of the auger (5) is rotatably connected to the inner wall of the other end of the screening cylinder (4). Next, a discharge port (6) is provided on the bottom surface of the other end of the screening cylinder (4), and a feeding port (14) and a return port (12) are provided on the top surface of one end of the screening cylinder (4). The return port (12) is connected to the output end of the vertical crusher (8) through a hose (13). A hoist (7) is fixedly installed on the top surface of the other end of the base frame (1). The feeding end of the hoist (7) extends to below the discharge port (6), and the discharge end of the hoist (7) extends to above the feeding end of the vertical crusher (8). A screen hole (17) is provided on the surface of the screening cylinder (4) inside the feeding box (2), and a discharge port (11) is provided on the bottom surface of the feeding box (2).

2. The blast furnace charging and screening device according to claim 1, characterized in that, The top surface of the base frame (1) is fixedly equipped with a bracket (9), and the top surface of the bracket (9) is connected to the bottom surface of the loading box (2) through a support spring (10).

3. The blast furnace charging and screening device according to claim 2, characterized in that, The support springs (10) are arranged in multiple sets, and the two ends of the support springs (10) are fixedly connected to the top surface of the bracket (9) and the bottom surface of the feeding box (2), respectively.

4. The blast furnace charging and screening device according to claim 1, characterized in that, The sieve holes (17) are densely distributed in multiple sets, and the sieve holes (17) are evenly arranged.

5. A blast furnace charging and screening device according to claim 1, characterized in that, The base frame (1) has a through hole directly below the discharge port (11), and the diameter of the through hole is larger than the diameter of the discharge port (11).

6. A blast furnace charging and screening device according to claim 1, characterized in that, The mounting bracket (16) is located outside the screening cylinder (4) and the feeding box (2).

7. A blast furnace charging and screening device according to claim 1, characterized in that, The bottom of the feeding box (2) is a funnel-shaped structure, and the inner bottom surface of the feeding box (2) is polished.

8. A blast furnace charging and screening device according to claim 1, characterized in that, The vibration motor (3) is arranged in multiple sets.

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