Efficient screening equipment for pulverized coal processing

Abstract

The utility model discloses efficient screening equipment for pulverized coal processing, and relates to the technical field of coal production, the efficient screening equipment comprises a left machine shell, one side of the left machine shell is fixedly connected with a right machine shell, one side of the right machine shell is provided with an annular groove, the inner wall of the annular groove is movably connected with a rotating ring, the outer wall of the rotating ring is welded with a rotating concave plate, and the rotating concave plate is fixedly connected with the right machine shell. And one side of the rotating concave plate is fixedly connected with a rotating rod, the other end of the rotating rod is fixedly connected with a second servo motor, and the outer wall of the second servo motor is fixedly connected with a frame body. The hopper is used in cooperation, pulverized coal and coal briquettes enter the machine shell from the hopper, the cylinder is provided with the screened pulverized coal briquettes, the discharging port and the powder outlet are used in cooperation, the container is placed below the discharging port and used for collecting the screened pulverized coal briquettes, the powder outlet is used for pouring out the screened pulverized coal, and the cover and the handle are used in cooperation. The handle is held by a hand and then pulled outwards, the cover is taken down, and a worker can conveniently clean the screen.

Description

Technical Field

[0001] The utility model relates to the technical field of coal production, in particular to a high-efficiency screening device for coal powder processing. Background Art

[0002] In recent years, the blast furnace coal powder injection process has been widely used in ironmaking production, which has played a role in energy conservation and consumption reduction and promoted the development of blast furnace ironmaking. As an important component of production, the coal powder vibrating screen adopts vibration motor excitation, rubber spring vibration reduction, high wear-resistant material screen plate, sealed screen box and other domestic and foreign advanced technologies and advanced self-synchronous vibration principle. It has the characteristics of long life, low noise and high screening efficiency. It is a vibrating screening equipment suitable for sintered ore, natural ore, coke and other powdered materials.

[0003] The prior art proposes a Chinese patent with publication number CN209631581U to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: The utility model relates to the field of coal production technology and discloses a vibrating screen for blast furnace pulverized coal injection, comprising a base, a support leg being threadedly connected to the bottom of the base, a frame being fixedly connected to the top of the base, a shock-absorbing spring being fixedly connected to the top of the shock-absorbing spring, a vibrating screen housing being fixedly connected to the bottom of the vibrating screen housing, a mounting plate being bolted to the bottom of the mounting plate, a vibrating motor being fixedly mounted on the bottom of the mounting plate, and a transmission frame being connected to the output end of the vibrating motor. The vibrating screen for blast furnace pulverized coal injection is provided with rollers and a transmission belt. When the vibrating screen is used to screen coal, some of the pulverized coal will flow out of the pulverized coal discharge port along the transmission belt. Since the pulverized coal is relatively light, the pulverized coal that has not flowed down can be pulled by pulling the transmission belt so that the pulverized coal on the transmission belt can flow out of the pulverized coal discharge port, thereby improving the pulverized coal screening efficiency of the vibrating screen and promoting the development of the vibrating screen.

[0004] Although the device can heat the coal powder when screening it to prevent the coal blocks from getting stuck on the screen due to being too wet, and the device can screen the coal blocks and coal powder through the vibrating screen, there is a processing procedure of passing the coal powder through a dryer to heat and dry the coal powder before screening the coal powder, which makes the heating device of the device unnecessary. At the same time, the screen plate of the device is clamped to the side wall of the vibrating screen shell through the mounting groove. The clamping structure is tight and firm. The clamping is tight, and the plate may not move under slight vibration. However, the device is used to screen coal blocks and coal powder, and requires greater vibration intensity and longer duration. At this time, the clamping part of the screen plate is worn after long-term use, resulting in insufficient clamping. When subjected to strong external vibration, the screen plate is likely to shake or even move out of its original position. Utility Model Content

[0005] The purpose of the utility model is to provide an efficient screening device for coal powder processing to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A high-efficiency screening device for coal powder processing includes a left casing, one side of the left casing is fixedly connected to the right casing, one side of the right casing is provided with an annular groove, the inner wall of the annular groove is movably connected to a rotating ring, the outer wall of the rotating ring is welded with a rotating concave plate, one side of the rotating concave plate is fixedly connected to a rotating rod, the other end of the rotating rod is fixedly connected to a second servo motor, and the outer wall of the second servo motor is fixedly connected to a frame.

[0008] The outer wall of the rotating concave plate is fixedly connected to the fixing frame, the inner wall of the fixing frame is fixedly connected to the first servo motor, one side of the first servo motor is fixedly connected to a driving rod, the other end of the driving rod is fixedly connected to the rotating plate, the outer wall of the rotating plate is movably connected to an outer guard ring, the other side of the outer guard ring is fixedly connected to one side of the fixed frame, the other side of the rotating plate is fixedly connected to a transmission plate, the transmission plate and the connecting plate are rotatably connected by a second movable rod, the other end of the connecting plate is rotatably connected to one end of the push plate by the first movable rod, the outer wall of the other end of the push plate is movably connected to the fixed plate, one side of the fixed plate is fixedly connected to a screen, and one side of the screen is fixedly connected to the movable plate.

[0009] The above-mentioned technical scheme is adopted, which is used in conjunction with the left casing, the right casing, the frame, the cylinder, the screen, the fixed plate, the push plate, the connecting plate, the first movable rod, the second movable rod, the transmission plate, the rotating plate, the driving rod, the first servo motor, the powder outlet, the fixed frame, the movable plate, the rotating concave plate, the rotating ring and the outer protective ring. The left casing and the right casing are the main outer shells of the device, which are used to protect the internal components and fix the external components. A screen for screening coal powder and coal blocks is installed on the inner wall of one side of the screen. By starting the first servo motor in the fixed frame, the driving rod is driven to rotate, so that the transmission plate on the rotating plate drives the connecting plate, the push plate and the fixed plate through the first movable rod and the second movable rod. There is an outer protective ring outside the rotating plate for fixing the rotating plate, so that the rotating plate can rotate continuously in the outer protective ring to prevent the rotating plate from falling off during the rotation process, and then by rotating The driving connection structure of the movable plate makes the cylinder move back and forth left and right. Through the back and forth movement, the coal blocks and coal powder come into contact with the screen. During the process, the coal powder will pass through the screen due to inertia, separating the coal powder and coal blocks. After screening, the first servo motor is stopped, and the second servo motor in the frame is started to drive the rotating rod to rotate, so that the rotating concave plate drives the rotating ring to rotate in the ring groove. After rotation, the cylinder continues to be driven by the first servo motor to move left and right, and the coal blocks can be poured out through different rings. During the process, the movable plate connected to the screen will support the rotation of the screen to prevent the fixed plate from being deformed at the connection with other connecting parts during rotation. At the same time, the movable plate does not affect the movement of the cylinder, and the movable plate shell slides in the rotating concave plate, so that the movable plate can play a role of fixed rotation without affecting the cylinder.

[0010] A further improvement of the technical solution of the present invention is that the top of the left casing and the top of the right casing are both fixedly connected to the bottom of the hopper.

[0011] The above technical solution is used in conjunction with a hopper, and the coal powder and coal blocks enter the casing from the hopper, so that the cylinder begins to screen the coal powder and coal blocks.

[0012] A further improvement of the technical solution of the present utility model is that: a material discharge port is provided at the bottom of both the left casing and the right casing, and a powder discharge port is provided on the inner wall of the left casing.

[0013] The above technical solution is adopted, which uses a discharge port and a powder discharge port in combination, and a container is placed below the discharge port to collect the screened coal blocks, and the powder discharge port is used to pour out the screened coal powder.

[0014] A further improvement of the technical solution of the present utility model is that a cover is snap-connected to one side of the left housing, and a handle is fixedly connected to one side of the cover.

[0015] The above technical solution is adopted, which uses a cover and a handle in combination. The cover can be removed by holding the handle and then pulling it outward, making it convenient for staff to clean the screen and prevent clogging.

[0016] A further improvement of the technical solution of the present utility model is that an inclined plate is fixedly connected to the inner wall of the left casing.

[0017] The above technical solution is adopted, which is used in conjunction with the inclined plate so that the coal powder can slide into the powder collecting box, making it easier to collect the dust.

[0018] A further improvement of the technical solution of the present utility model is that one side of the left housing is fixedly connected to one side of the outer frame by bolts, a rubber plate is fixedly connected to the inner wall of the outer frame, and a powder collecting box is placed on the inner wall of the outer frame.

[0019] The above-mentioned technical solution is adopted, which uses a powder collecting box, an outer frame, bolts and a rubber plate in combination, so that the device can be used to collect the screened coal powder. At the same time, the bolts fix the outer frame to the left casing, and a rubber plate is installed on the inner wall of the outer frame to prevent dust from escaping. The rubber plate is soft enough so that the powder collecting box can be pushed into the inner side of the rubber plate, so that the rubber plate can prevent the dust from escaping and prevent the staff from inhaling too much dust.

[0020] A further improvement of the technical solution of the present utility model is that: the other end of the rotating rod is fixedly connected to a second servo motor, and the outer wall of the second servo motor is fixedly connected to a frame.

[0021] Adopting the above technical solution, the solution is used in conjunction with

[0022] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0023] The utility model provides an efficient screening device for coal powder processing, which is used in conjunction with a left casing, a right casing, a frame, a cylinder, a screen, a fixed plate, a push plate, a connecting plate, a first movable rod, a second movable rod, a transmission plate, a rotating plate, a driving rod, a first servo motor, a powder outlet, a fixed frame, a movable plate, a rotating concave plate, a rotating ring and an outer protective ring. The above components work together to improve the screening efficiency and quality while ensuring the long-term stable operation of the entire screening device from the aspects of power control and material distribution uniformity. The first servo motor provides power, and after a series of transmission and pushing actions, the material can be evenly pushed and screened, ensuring the efficiency and stability of the screening process, and solving the problem that the clamping is not tight enough and the screen plate is likely to shake or even move out of its original position when subjected to strong external vibration.

[0024] The utility model provides an efficient screening device for coal powder processing, which is used in combination with a powder outlet, an outer frame, bolts, a rubber plate and a powder collecting box. When the coal powder is poured out from the powder outlet and slides into the powder collecting box along the inclined plate, due to the flow characteristics of the coal powder and the influence of possible airflow, there is a possibility that some of the coal powder will drift outward. At this time, the rubber plate inside the outer frame plays a key blocking role. The rubber plate has a certain degree of flexibility and elasticity, and can fit tightly with the surrounding structure to form an effective sealing barrier to prevent the coal powder from drifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the left casing structure of the present utility model;

[0026] Figure 2 This is a schematic diagram of the right casing structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the disassembled structure of the right casing of the present utility model;

[0028] Figure 4 This is a schematic diagram of the rotating concave plate structure of the present utility model;

[0029] Figure 5 This is a schematic diagram of the disassembled structure of the left casing of the present utility model;

[0030] Figure 6 This is a schematic diagram of the bottom structure of the left casing of the present invention.

[0031] In the figure: 1. Left casing; 2. Right casing; 3. Hopper; 4. Frame; 5. Cylinder; 6. Screen; 7. Fixed plate; 8. Push plate; 9. Connecting plate; 10. First movable rod; 11. Second movable rod; 12. Transmission plate; 13. Rotating plate; 14. Driving rod; 15. First servo motor; 16. Fixed frame; 17. Movable plate; 18. Rotating concave plate; 19. Rotating rod; 20. Second servo motor; 21. Rotating ring; 22. Outer protective ring; 23. Cover; 24. Ring groove; 25. Handle; 26. Bolt; 27. Outer frame; 28. Rubber plate; 29. ​​Powder collecting box; 30. Inclined plate; 31. Discharge port; 32. Powder discharge port. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the embodiments:

[0033] like Figure 1-5As shown, the utility model provides a high-efficiency screening equipment for coal powder processing, including a left casing 1, one side of the left casing 1 is fixedly connected to the right casing 2, one side of the right casing 2 is provided with an annular groove 24, the inner wall of the annular groove 24 is movably connected to a rotating ring 21, the outer wall of the rotating ring 21 is welded with a rotating concave plate 18, one side of the rotating concave plate 18 is fixedly connected to a rotating rod 19, the other end of the rotating rod 19 is fixedly connected to a second servo motor 20, and the outer wall of the second servo motor 20 is fixedly connected to a frame 4.

[0034] The outer wall of the rotating concave plate 18 is fixedly connected to the fixing frame 16, and the inner wall of the fixing frame 16 is fixedly connected to the first servo motor 15. One side of the first servo motor 15 is fixedly connected to the driving rod 14, and the other end of the driving rod 14 is fixedly connected to the rotating plate 13. The outer wall of the rotating plate 13 is movably connected to the outer guard ring 22, and the other side of the outer guard ring 22 is fixedly connected to one side of the fixing frame 16. The other side of the rotating plate 13 is fixedly connected to the transmission plate 12, and the transmission plate 12 is rotatably connected to the connecting plate 9 through the second movable rod 11. The other end of the connecting plate 9 is rotatably connected to one end of the push plate 8 through the first movable rod 10. The outer wall of the other end of the push plate 8 is movably connected to the fixing plate 7, one side of the fixing plate 7 is fixedly connected to the screen 6, and one side of the screen 6 is fixedly connected to the movable plate 17. The left casing 1 and the right casing 2 are the main casings of the device, which are used to protect internal components and provide a fixed foundation for external components. When the first servo motor 15 in the fixing frame 16 is started, its powerful power belt The movable driving rod 14 starts to rotate. As the driving rod 14 rotates, the rotating plate 13 also rotates accordingly, and the transmission plate 12 on the rotating plate 13 cleverly drives the connecting plate 9 to move up and down through the first movable rod 10 and the second movable rod 11, so that one end of the push plate 8 will also move accordingly, and then the cylinder 5 connected to the fixed plate 7 will move in coordination, so that the internal coal blocks and coal powder will continue to touch the screen 6. Due to the effect of inertia, the coal powder can smoothly pass through the screen 6, thereby achieving efficient separation of coal powder and coal blocks. When the screening work is completed, the operation of the first servo motor 15 is stopped, and then the second servo motor 20 in the frame 4 is started to make the rotating rod 19 start to rotate. The rotation of the rotating rod 19 prompts the rotating concave plate 18 to drive the rotating ring 21 to rotate accurately in the ring groove 24. After the rotation is completed, the cylinder 5 continues to move left and right through the drive of the first servo motor 15 again. In this process, the coal blocks can be smoothly poured out, and the screening of coal powder and coal blocks is completed.

[0035] like Figure 1-5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the top of the left casing 1 and the top of the right casing 2 are fixedly connected to the bottom of the hopper 3, and the hopper 3 plays a role in storing and concentrating materials, and can accommodate a large amount of materials to be processed at one time, such as coal powder and coal blocks, providing sufficient raw material reserves for subsequent continuous processing.

[0036] A discharge port 31 is provided at the bottom of the left casing 1 and the right casing 2, and a powder discharge port 32 is provided on the inner wall of the left casing 1. The discharge port 31 is used to pour out coal blocks or larger particles after the coal powder is screened, and the coal powder is discharged into the powder collecting box 29 from the powder discharge port 32.

[0037] A cover 23 is snap-connected to one side of the left casing 1, and a handle 25 is fixedly connected to one side of the cover 23. The cover 23 is snap-connected to the inner wall of the left casing 1. When you want to open it, you only need to hold the handle 25 with your hand and then pull it outward to open the cover 23, making it convenient to clean the inner wall of the left casing 1.

[0038] An inclined plate 30 is fixedly connected to the inner wall of the left casing 1. The inclined plate 30 allows the pulverized coal to be smoothly discharged into the powder collecting box 29 so as not to accumulate in the powder outlet 32 ​​to prevent blockage.

[0039] One side of the left casing 1 is fixedly connected to one side of the outer frame 27 by bolts 26. A rubber plate 28 is fixedly connected to the inner wall of the outer frame 27. A powder collecting box 29 is placed on the inner wall of the outer frame 27. The powder collecting box 29 is used to collect the screened coal powder, which is then transported away by manual or mechanical transportation, and then placed in a powder collecting box 29. The outer frame 27 is fixed to one side of the left casing 1 by bolts 26, and a rubber plate 28 is also installed inside to prevent smoke from leaking out and avoid inhalation into the human body.

[0040] The other end of the rotating rod 19 is fixedly connected to the second servo motor 20, the outer wall of the second servo motor 20 is fixedly connected to the frame 4, and the second servo motor 20 is fixed inside the frame 4. When the second servo motor 20 is started, the rotating rod 19 is driven to rotate, so that the rotating concave plate 18 drives the rotating ring 21 to rotate, so that the coal blocks inside can be discharged through the shaking device.

[0041] The following is a detailed description of the working principle of this high-efficiency screening equipment for coal powder processing.

[0042] like Figure 1-5As shown, when in use, the material is first poured into the cylinder 5 from the hopper 3, and then the first servo motor 15 in the fixed frame 16 is started to drive the driving rod 14 to rotate, so that the rotating plate 13 drives the transmission plate 12 to rotate, and then the transmission plate 12 drives the connecting plate 9 to push up and down through the second movable rod 11, so that one end of the push plate 8 connected by the first movable rod 10 moves up and down, so that the fixed plate 7 connected thereto drives the cylinder 5 to move back and forth, and has the effect of shaking left and right, and then the coal powder and coal blocks inside the cylinder 5 will touch the screen 6, so that the coal powder will pass through the gap in the screen 6, and then the coal powder will be discharged from the powder outlet 32 ​​into the powder collecting box 29, so that the device can screen out The action of the coal powder is completed. After completion, the drive of the first servo motor 15 is stopped, and the second servo motor 20 in the frame 4 is started to drive the rotating rod 19 to rotate, so that the rotating rod 19 drives the rotating concave plate 18 to rotate during rotation. During the process, the movable plate 17 connected to the cylinder 5 will support the weight of the rotating concave plate 18 and the gas component during rotation, so as to avoid the fixed plate 7 from bending and deforming the connection between the push plate 8 during rotation. After the rotation is completed, the second servo motor 20 is turned off, and the first servo motor 15 is started to continue shaking the cylinder 5 to discharge the internal coal blocks or other substances from the discharge port 31, and clean out the coal blocks in the cylinder 5, so that the device can continue to screen the coal powder.

[0043] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An efficient screening device for coal powder processing, comprising a left casing (1), characterized in that: One side of the left housing (1) is fixedly connected to the right housing (2), one side of the right housing (2) is provided with an annular groove (24), the inner wall of the annular groove (24) is movably connected to a rotating ring (21), the outer wall of the rotating ring (21) is welded with a rotating concave plate (18), and one side of the rotating concave plate (18) is fixedly connected to a rotating rod (19); The outer wall of the rotating concave plate (18) is fixedly connected to a fixed frame (16), the inner wall of the fixed frame (16) is fixedly connected to a first servo motor (15), one side of the first servo motor (15) is fixedly connected to a driving rod (14), the other end of the driving rod (14) is fixedly connected to a rotating plate (13), the outer wall of the rotating plate (13) is movably connected to an outer protective ring (22), the other side of the outer protective ring (22) is fixedly connected to one side of the fixed frame (16), the other side of the rotating plate (13) is fixedly connected to a transmission plate (12), the transmission plate (12) is rotatably connected to the connecting plate (9) through a second movable rod (11), the other end of the connecting plate (9) is rotatably connected to one end of the push plate (8) through a first movable rod (10), the outer wall of the other end of the push plate (8) is movably connected to a fixed plate (7), one side of the fixed plate (7) is fixedly connected to a screen (6), and one side of the screen (6) is fixedly connected to a movable plate (17).

2. The high-efficiency screening equipment for coal powder processing according to claim 1, characterized in that: The top of the left casing (1) and the top of the right casing (2) are both fixedly connected to the bottom of the hopper (3).

3. The high-efficiency screening equipment for coal powder processing according to claim 1, characterized in that: A material discharge port (31) is provided at the bottom of each of the left casing (1) and the right casing (2), and a powder discharge port (32) is provided on the inner wall of the left casing (1).

4. The high-efficiency screening equipment for coal powder processing according to claim 1, characterized in that: A cover (23) is snap-connected to one side of the left housing (1), and a handle (25) is fixedly connected to one side of the cover (23).

5. The high-efficiency screening equipment for coal powder processing according to claim 1, characterized in that: An inclined plate (30) is fixedly connected to the inner wall of the left casing (1).

6. The high-efficiency screening equipment for coal powder processing according to claim 1, characterized in that: One side of the left housing (1) is fixedly connected to one side of the outer frame (27) via bolts (26); a rubber plate (28) is fixedly connected to the inner wall of the outer frame (27); and a powder collecting box (29) is placed on the inner wall of the outer frame (27).

7. The high-efficiency screening equipment for coal powder processing according to claim 6, characterized in that: The other end of the rotating rod (19) is fixedly connected to a second servo motor (20), and the outer wall of the second servo motor (20) is fixedly connected to a frame (4).

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