A fuel particle size crushing device

Abstract

This application provides a fuel particle size crushing device, relating to the field of fuel crushing devices. It includes a housing with two crushing rollers rotatably connected internally. A drive device is located externally to the housing. Four mounting frames are located internally within the housing, each with a mounting groove. A filter plate is installed within each mounting groove, and the filter plate is inclined. Two first through slots are formed on the rear inner wall of the housing. This application, through the coordination of the first motor, fixed plate, mounting frames, and filter plates, allows operators to quickly change screen plates with different apertures according to different sintering raw material formulations and process requirements, thereby flexibly changing the target particle size of the final product. This greatly enhances the equipment's process adaptability and application range. Furthermore, the guide block and inclined filter screen further ensure the efficiency and effectiveness of material screening.

Description

Technical Field

[0001] This utility model relates to the field of fuel crushing devices, and more specifically, to a fuel particle size crushing device. Background Technology

[0002] Sintering is a key step in the ironmaking process of the steel industry. It mainly involves mixing various powdered iron-containing raw materials with appropriate amounts of fuel, flux, and water, then pelletizing them and sintering them into blocks on sintering equipment to undergo a series of physicochemical changes, which are then used as raw materials for the next blast furnace process.

[0003] However, in some existing fuel crushing devices, the material is usually discharged directly after crushing. In the steel sintering process, the particle size of coke powder has a significant impact on the quality of sinter. Existing crushing devices are not convenient for effectively controlling the particle size of the material. Excessively large fuel particles will increase the width of the reburning zone, which will deteriorate the permeability of the sintering bed. At the same time, large coke powder particles tend to concentrate at the bottom of the bed. Combined with the heat storage effect at the bottom of the sintering bed, this will result in a large temperature difference between the top and bottom of the sintering bed. Small coke powder particles burn quickly during sintering, and the heat generated by their combustion is insufficient to meet the needs of the sintering bed. The amount of liquid phase generated is insufficient, which will reduce the strength of the sinter. This leads to certain limitations in practical use. In view of this, we propose a fuel particle size crushing device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem that some current fuel particle size crushing devices are not convenient for controlling the particle size of the crushed material.

[0005] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a fuel particle size crushing device, comprising a housing with two crushing rollers rotatably connected inside. A driving device is located outside the housing. Four mounting frames are located inside the housing, each with a mounting groove. A filter plate is installed inside each mounting groove at an angle. Two first through grooves are formed on the rear inner wall of the housing, each containing a connecting pipe with an inclined groove inside. A screw conveyor is located outside the housing, with two second through grooves on its surface, each connecting to one of the inclined grooves. A clearance groove is located inside the housing, containing a connecting assembly.

[0006] As a preferred technical solution of this application, a feed hopper is fixedly connected to the upper surface of the box, and a discharge pipe is fixedly connected to the outside of the screw conveyor, with the discharge pipe and the inside of the feed hopper being connected.

[0007] As a preferred technical solution of this application, the connecting component includes a fixing plate, which is fixedly sleeved inside the relief groove. The surface of the fixing plate has a groove, and the mounting frame is rotatably connected to the inside of the groove via a shaft.

[0008] As a preferred technical solution of this application, a first motor is fixedly connected to the front side of the housing, the output shaft of the first motor rotates through the interior of the housing, and the output shaft of the first motor is fixedly connected to the shaft of the mounting frame.

[0009] As a preferred technical solution of this application, a rubber sealing gasket is fixedly connected to the upper surface of the mounting frame.

[0010] As a preferred technical solution of this application, a vibration motor is fixedly connected to the upper surface of the fixing plate outside the box.

[0011] As a preferred technical solution of this application, two protective blocks are fixedly connected to the inner wall of the box, and the lower surface of the two protective blocks is provided with an arc-shaped groove.

[0012] As a preferred technical solution of this application, a guide block is fixedly connected inside the box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In the scheme of this application:

[0015] 1. Through the coordination between the first motor, fixed plate, mounting frame, filter plate and other structures, the operator can quickly change the sieve plate with different aperture according to different sintering raw material formulas and process requirements, thereby flexibly changing the target particle size of the final product, which greatly enhances the process adaptability and application range of the equipment. At the same time, the guide block and the inclined filter screen can further ensure the efficiency and effect of material screening.

[0016] 2. Through the coordination of the connecting pipes, screw conveyors, discharge pipes and other structures, only materials that meet the particle size requirements can be discharged through the filter plate. Coarse particles that do not meet the requirements will be returned to the feed hopper by the screw conveyor for secondary crushing until all materials are crushed to the target particle size range. This improves the pass rate and consistency of the output particle size and lays a solid foundation for stabilizing the quality of sintered ore. Attached Figure Description

[0017] Figure 1 A schematic diagram of the fuel particle size crushing device provided in this application;

[0018] Figure 2 A first schematic cross-sectional view of the housing in the fuel particle size crushing device provided in this application;

[0019] Figure 3 A schematic diagram of the fixed plate in the fuel particle size crushing device provided in this application;

[0020] Figure 4 A second schematic cross-sectional view of the housing in the fuel particle size crushing device provided in this application;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 This is a schematic diagram of the rear structure of the housing in the fuel particle size crushing device provided in this application.

[0023] The image shows:

[0024] 1. Box body; 2. Crushing roller; 3. Drive unit; 4. Mounting frame; 5. Mounting groove; 6. Filter plate; 7. First through groove; 8. Connecting pipe; 9. Inclined chute; 10. Screw conveyor; 11. Second through groove; 12. Feed hopper; 13. Discharge pipe; 14. Relief groove; 15. Fixing plate; 16. Groove; 17. First motor; 18. Rubber sealing gasket; 19. Vibrating motor; 20. Protective block; 21. Arc groove; 22. Guide block. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] Example 1

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A fuel particle size crushing device includes a housing 1. Two crushing rollers 2 are rotatably connected inside the housing 1. A drive device 3 is installed outside the housing 1, which rotates the crushing rollers 2 to crush the material. Four mounting frames 4 are installed inside the housing 1. The four mounting frames 4 have identical structures and are arranged in a mirror image. Therefore, the following description focuses on one mounting frame 4. An mounting groove 5 is opened inside the mounting frame 4, and a filter plate 6 is installed inside the mounting groove 5. The filter plate 6 is inclined. Two first through grooves 7 are opened on the rear inner wall of the housing 1. A connecting pipe 8 is fixedly fitted inside each of the two first through grooves 7. An inclined groove 9 is opened inside the connecting pipe 8. A screw conveyor 10 is installed outside the housing 1. Two second through grooves 11 are opened on the surface of the screw conveyor 10, and the two second through grooves 11 are respectively connected to the two inclined grooves 9. A clearance groove 14 is opened inside the housing 1, and a connecting component is installed inside the clearance groove 14.

[0031] In the above embodiment, the filter plate 6 located inside the two upper mounting frames 4 and the filter plate 6 located inside the two lower mounting frames 4 have different pore sizes.

[0032] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a feed hopper 12 is fixedly connected to the upper surface of the housing 1, and a discharge pipe 13 is fixedly connected to the outside of the screw conveyor 10. The discharge pipe 13 and the inside of the feed hopper 12 are connected. Through the inclined mounting frame 4 and the filter plate 6, the material with larger particle size that has been filtered can be transported to the inside of the screw conveyor 10 through the inclined chute 9 and the second through chute 11. Then, the material can be transported to the inside of the feed hopper 12 through the discharge pipe 13 by the screw conveyor 10, thereby undergoing secondary crushing to ensure the qualified rate of the material.

[0033] Example 2

[0034] The fuel particle size crushing device provided in Example 1 is further optimized, specifically, as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the connecting assembly includes a fixing plate 15, which is fixedly sleeved inside the relief groove 14. The surface of the fixing plate 15 has a groove 16, and the mounting frame 4 is rotatably connected to the inside of the groove 16 via a shaft.

[0035] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a first motor 17 is fixedly connected to the front side of the housing 1. The output shaft of the first motor 17 rotates through the interior of the housing 1. The output shaft of the first motor 17 is fixedly connected to the shaft of the mounting frame 4 through a coupling. The first motor 17 can be started by an external controller. The rotation of the output shaft of the first motor 17 can drive the mounting frame 4 to rotate inside the groove 16, thereby driving the mounting frames 4 on both sides to move towards the middle or rotate to the sides.

[0036] When the two upper mounting frames 4 are closed, materials with larger particle sizes will be filtered and screened. Subsequently, when the two upper mounting frames 4 are rotated to both sides and the two lower mounting frames 4 are closed, materials with smaller particle sizes can be filtered and screened, thus facilitating the switching of filter plates 6 with different pore sizes according to actual usage requirements.

[0037] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a rubber sealing gasket 18 is fixedly connected to the upper surface of the mounting frame 4. The setting of the rubber sealing gasket 18 effectively prevents materials from getting stuck inside the groove 16, thereby ensuring the smooth rotation of the mounting frame 4 inside the groove 16.

[0038] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a vibration motor 19 is fixedly connected to the upper surface of the fixed plate 15 outside the box 1. The vibration motor 19 facilitates the vibration of the filter plate 6, thereby ensuring the screening efficiency and effect of the material. It also facilitates the flow of materials with substandard particle size to the inclined chute 9 for subsequent secondary crushing.

[0039] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, two protective blocks 20 are fixedly connected to the inner wall of the box 1. The lower surface of the two protective blocks 20 is provided with arc-shaped grooves 21. Through the cooperation of the protective blocks 20 and the arc-shaped grooves 21, the material falling from the feed hopper 12 can fall between the two crushing rollers 2, thereby effectively preventing the material from leaking from both ends of the rollers and ensuring that all materials are crushed through the set gap between the two rollers, thus ensuring the crushing efficiency and the accuracy of particle size control.

[0040] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a guide block 22 is fixedly connected inside the box 1. The guide block 22 facilitates the movement of the crushed material to both sides, so that the material can pass through the inclined surface formed by the filter plate 6, ensuring the subsequent screening effect and reducing the possibility of accumulation.

[0041] The fuel particle size crushing device provided by this utility model is used as follows:

[0042] By activating the drive device 3 used to control the crushing roller 2 to crush the material, the material to be crushed is added from the feed hopper 12. The subsequent material will fall between the two crushing rollers 2 through the inclined surface of the protective block 20, thereby achieving the crushing of the material.

[0043] The guide block 22 facilitates the movement of the crushed material to both sides, allowing it to pass over the inclined surface formed by the filter plate 6, ensuring the subsequent screening effect and reducing the possibility of accumulation. If the two upper mounting frames 4 are closed, larger particles will be filtered and screened. If the two upper mounting frames 4 are rotated to both sides and the two lower mounting frames 4 are closed, smaller particles can be filtered and screened. This allows for easy switching between filter plates 6 with different apertures according to actual usage requirements.

[0044] After the filter plate 6 screens the material for particle size, the inclined filter plate 6 guides the material that does not meet the particle size standard. The material will then enter the interior of the second channel 11 through the inclined chute 9, and be discharged again into the interior of the feed hopper 12 from the second discharge pipe 13 by the screw conveyor 10, so as to facilitate subsequent secondary crushing.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication 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.

[0046] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A fuel particle size crushing device, characterized in that, The device includes a housing (1), with two crushing rollers (2) rotatably connected inside the housing (1), a drive device (3) on the outside of the housing (1), four mounting frames (4) inside the housing (1), mounting slots (5) inside the mounting frames (4), a filter plate (6) inside the mounting slots (5), the filter plate (6) being inclined, two first through slots (7) on the rear inner wall of the housing (1), a connecting pipe (8) fixedly fitted inside each of the two first through slots (7), an inclined slot (9) inside the connecting pipe (8), a screw conveyor (10) on the outside of the housing (1), two second through slots (11) on the surface of the screw conveyor (10), the two second through slots (11) being connected to the two inclined slots (9) respectively, a clearance slot (14) inside the housing (1), and a connecting component inside the clearance slot (14).

2. The fuel particle size crushing device according to claim 1, characterized in that, The upper surface of the box (1) is fixedly connected to the feed hopper (12), and the outside of the screw conveyor (10) is fixedly connected to the discharge pipe (13). The discharge pipe (13) and the inside of the feed hopper (12) are connected.

3. The fuel particle size crushing device according to claim 2, characterized in that, The connecting assembly includes a fixing plate (15), which is fixedly sleeved inside the relief groove (14). The surface of the fixing plate (15) has a groove (16), and the mounting frame (4) is rotatably connected inside the groove (16) via a shaft.

4. The fuel particle size crushing device according to claim 3, characterized in that, The front side of the housing (1) is fixedly connected to a first motor (17), the output shaft of the first motor (17) rotates through the interior of the housing (1), and the output shaft of the first motor (17) is fixedly connected to the shaft of the mounting frame (4).

5. A fuel particle size crushing device according to claim 4, characterized in that, A rubber sealing gasket (18) is fixedly connected to the upper surface of the mounting frame (4).

6. The fuel particle size crushing device according to claim 5, characterized in that, The fixed plate (15) is fixedly connected to the upper surface outside the box (1) with a vibration motor (19).

7. A fuel particle size crushing device according to claim 6, characterized in that, The inner wall of the box (1) is fixedly connected to two protective blocks (20), and the lower surface of the two protective blocks (20) is provided with an arc groove (21).

8. A fuel particle size crushing device according to claim 7, characterized in that, The box (1) is fixedly connected to a guide block (22).

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