Buffer bin stepped scraper-trough conveyer for cement mill roller press

Abstract

The utility model relates to the technical field of cement production equipment, and provides a surge bin stepped scraper-trough conveyer for a roller press of a cement grinding mill, which comprises a plurality of conveying pipes connected in sequence, and the inner diameters of all the conveying pipes are sequentially reduced from top to bottom; an inclined face is arranged on the side, close to the lower-end conveying pipe, of the conveying pipe and used for guiding materials into the lower-end conveying pipe. The surge bin stepped scraper-trough conveyer for the cement grinding mill roller press aims at reducing the situation that materials are not evenly distributed when entering a stable retention bin.

Description

Technical Field

[0001] This application relates to the field of cement production equipment technology, and in particular to a stepped chute for a cement grinding roller press. Background Technology

[0002] In cement production, the roller press is a key piece of equipment, and its operational stability and efficiency directly affect the quality of cement products and production efficiency. However, roller presses often face the problem of roller gap deviation during operation, which not only leads to unstable product quality but also increases equipment maintenance costs and downtime, thereby affecting overall production efficiency.

[0003] The causes of roll gap deviation are complex and varied, including manufacturing precision of the rolls, installation errors, wear and deformation during long-term operation, and changes in material properties. Among these, uneven distribution and poor flow of material within the flow stabilization chamber are significant contributing factors to roll gap deviation.

[0004] Traditional stabilizing bin return chute designs, such as 395*370 square chutes, have a simple structure, which makes it easy for materials to accumulate and flow off course during the flow process. This results in uneven distribution of materials entering the stabilizing bin, which in turn exacerbates the problem of roller gap deviation. Utility Model Content

[0005] To reduce uneven distribution of materials entering the retention bin, this application provides a stepped chute for a buffer bin in a cement mill roller press.

[0006] The technical solution provided in this application for a buffer chamber stepped chute for a cement mill roller press is as follows:

[0007] A stepped chute for a buffer chamber in a cement mill roller press includes multiple conveying pipes connected in sequence, with the inner diameter of all conveying pipes decreasing from top to bottom; an inclined surface is provided on the side of each conveying pipe near the lower conveying pipe, the inclined surface being used to guide the material into the lower conveying pipe.

[0008] By adopting the above technical solution, when material flows from the upstream equipment into the stepped chute, it first passes through a conveying pipe with a larger inner diameter, where the material flow velocity is relatively fast. As the material flows downwards, the size of the conveying pipe gradually decreases, and the material flow velocity also slows down accordingly. This design allows the material to be gradually homogenized during the flow process, avoiding the impact caused by sudden velocity changes. At the same time, the transition of each chute section is through an inclined surface, without sharp edges, which further reduces material blockage and equipment wear.

[0009] Optionally, a wear-resistant ring is provided on the bottom wall of the conveying pipe. The wear-resistant ring is connected to the conveying pipe through a disassembly component, and the inclined surface is provided on the wear-resistant ring.

[0010] By adopting the above technical solution, the wear-resistant ring can withstand the wear inside the conveying pipe and can be replaced after damage, thereby maintaining the service life of the conveyor.

[0011] Optionally, the disassembly component includes a bolt, the outer wall of the conveying pipe has a threaded hole, the side wall of the wear-resistant ring has a first threaded groove, and the bolt passes through the threaded hole and connects with the threaded groove.

[0012] By adopting the above technical solution and using bolt connection, the wear ring can be easily disassembled and replaced when it wears to a certain extent; this not only reduces the difficulty of maintenance, but also improves the maintainability of the equipment.

[0013] Optionally, a rubber layer is provided between the outer wall of the wear-resistant ring and the inner wall of the conveying pipe.

[0014] By adopting the above technical solution and setting a rubber layer, the tightness between the wear-resistant ring and the conveying pipe can be increased, reducing the possibility of material entering between the wear-resistant ring and the conveying pipe.

[0015] Optionally, the inner wall of the conveying pipe is provided with a guide block, and the wear-resistant ring is provided with a guide groove for the guide block to be inserted.

[0016] By adopting the above technical solution, the cooperation between the guide block and the guide groove ensures that the first threaded groove of the wear-resistant ring is aligned with the threaded hole of the conveying pipe, reducing the need for multiple rotations of the wear-resistant ring and improving the installation efficiency of the wear-resistant ring and the conveying pipe.

[0017] Optionally, one of the conveying pipes is provided with an anti-blocking component, the anti-blocking component including a support frame disposed inside the conveying pipe, an anti-blocking rod movably mounted on the support frame, and a driving component that drives the anti-blocking rod to move vertically.

[0018] When the material contains a lot of fine powder or has a high moisture content, blockage is likely to occur. By adopting the above technical solution, the anti-blocking rod moves vertically under the drive of the drive component, which can stir and push the material, keeping the material in a flowing state in the conveying pipe, thereby avoiding equipment vibration and instability caused by material accumulation.

[0019] Optionally, the outer wall of the anti-blocking rod is provided with a second threaded groove.

[0020] By adopting the above technical solution and setting a second threaded groove, the friction between the anti-blocking rod and the material can be increased, further reducing the possibility of material blockage in the conveying pipe.

[0021] Optionally, the support frame has a movable groove for the anti-blocking rod to slide. The driving component includes a cylinder and a driving rod. The anti-blocking rod has a first driving groove on its side wall. The support frame has a second driving groove that communicates with the first driving groove. The driving rod is movably installed in the second driving groove. The cylinder is used to drive the driving rod to slide in the second driving groove. The top wall of the first driving groove is provided with a guide surface. One end of the driving rod is slidably connected to the guide surface. When the driving rod moves toward one side of the first driving groove, the guide surface is used to guide the anti-blocking rod to move toward the side away from the movable groove.

[0022] By adopting the above technical solution, when the cylinder works, it pushes or pulls the drive rod, causing it to move along the second drive groove. Since the guide surface is slidably connected to the drive rod, the guide surface guides the anti-blocking rod to move away from the active groove, so as to generate a force perpendicular to the direction of the active groove, thereby pushing or pulling the anti-blocking rod to move. This keeps the material flowing in the conveying pipe, thus avoiding equipment vibration and instability caused by material accumulation.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up multiple conveying pipes and decreasing the inner diameter of all conveying pipes from top to bottom, when the material flows into the stepped chute from the upstream equipment, it will first pass through the conveying pipe with a larger inner diameter, where the material flow rate will be relatively fast; as the material flows downward, the size of the conveying pipe gradually decreases, and the material flow rate will also slow down accordingly; thus, the material can be gradually homogenized during the flow process, reducing the roller gap deviation.

[0025] 2. By setting up an anti-blocking component, the anti-blocking rod moves vertically under the drive of the drive component, which can stir and push the material, keeping the material in a flowing state in the conveying pipe, thereby avoiding equipment vibration and instability caused by material accumulation. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of Example 1;

[0027] Figure 2 This is a partial cross-sectional view of Embodiment 1;

[0028] Figure 3 This is a partial cross-sectional view of Embodiment 2;

[0029] Figure 4 yes Figure 3 A magnified view of a portion of point a.

[0030] Explanation of reference numerals in the attached drawings: 1. Feed pipe; 11. Guide block; 2. Wear-resistant ring; 21. Inclined surface; 22. Rubber layer; 23. Guide groove; 3. Disassembly component; 31. Threaded hole; 32. First threaded groove; 4. Anti-blocking component; 41. Anti-blocking rod; 411. Second threaded groove; 42. Support frame; 43. Drive component; 431. Drive rod; 432. Cylinder; 44. Movable groove; 45. First drive groove; 46. Second drive groove; 47. Guide surface. Detailed Implementation

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] Example 1:

[0033] This application discloses a stepped chute for a buffer chamber in a cement grinding roller press.

[0034] Reference Figure 1 A stepped chute for a buffer chamber in a cement mill roller press includes multiple conveying pipes 1 connected in sequence, with the inner walls of all conveying pipes 1 decreasing in size from top to bottom. In this embodiment, three conveying pipes 1 are provided, with their diameters and heights from top to bottom being 600*300, 520*300, and 320*400, respectively. The conveying pipes 1, stacked from largest to smallest, can fully homogenize the material entering the stabilizing chamber, ensuring the stability of the roller press operation.

[0035] Reference Figure 2 One of the conveying pipes 1 is provided with a wear-resistant ring 2 near the end of the lower conveying pipe 1. The wear-resistant ring 2 abuts against the bottom wall of the conveying pipe 1 and is connected to the conveying pipe 1 through a disassembly part 3. The outer wall of the wear-resistant ring 2 is provided with a rubber layer 22 for abutting against the inner wall of the conveying pipe 1. The rubber layer 22 can reduce the situation where material enters between the conveying pipe 1 and the wear-resistant ring 2.

[0036] A guide block 11 is provided on the inner bottom wall of the feed pipe 1, and a guide groove 23 is provided on the wear ring 2 for the guide block 11 to be inserted. In this embodiment, the disassembly component 3 is a bolt. A threaded hole 31 is provided on the outer wall of the feed pipe 1, and a first threaded groove 32 is provided on the wear ring 2 for communicating with the threaded hole 31. The bolt passes through the threaded hole 31 and connects with the first threaded groove 32. The bolt connection method allows the wear ring 2 to be easily disassembled and replaced when it is worn to a certain extent; this not only reduces the maintenance difficulty but also improves the maintainability of the equipment.

[0037] The upper wall of the wear-resistant ring 2 is provided with an inclined surface 21. The inclined surface 21 can use the gravity of the material to smoothly guide the material into the lower conveying pipe 1, ensuring the continuity and stability of the material flow.

[0038] The implementation principle of Embodiment 1 of this application is as follows:

[0039] When material flows from the upstream equipment into the stepped chute, it first passes through the larger inner diameter conveyor pipe 1, where the material flow velocity is relatively high. As the material flows downstream, the size of the conveyor pipe 1 gradually decreases, and the material flow velocity decreases accordingly. This design allows the material to be gradually homogenized during flow, avoiding the impact caused by sudden velocity changes. Simultaneously, the transition between each chute section is via an inclined surface 21, without sharp edges, which further reduces material blockage and equipment wear.

[0040] Example 2:

[0041] This application discloses a stepped chute for a buffer chamber in a cement grinding roller press.

[0042] Reference Figure 3 The difference between Embodiment 2 and Embodiment 1 is that: one of the conveying pipes 1 is provided with an anti-blocking component 4. In this embodiment, the anti-blocking component 4 is located in the lowermost conveying pipe 1. The anti-blocking component 4 includes a support frame 42, an anti-blocking rod 41 and a driving component 43. The support frame 42 is installed on the inner wall of the conveying pipe 1. The upper end of the support frame 42 is provided with a movable groove 44. The anti-blocking rod 41 is movably installed in the movable groove 44. The driving component 43 is used to drive the anti-blocking rod 41 to move up and down in the movable groove 44.

[0043] The outer wall of the anti-blocking rod 41 is provided with a second threaded groove 411. The second threaded groove 411 can increase the friction between the anti-blocking rod 41 and the material, so that the material remains in a flowing state in the conveying pipe 1.

[0044] Reference Figure 4 The driving component 43 includes a cylinder 432 and a driving rod 431. The outer wall of the anti-blocking rod 41 is provided with a first driving groove 45. The longitudinal section of the first driving groove 45 is rectangular. The top wall of the first driving groove 45 is provided with a guide surface 47, and the bottom wall of the first driving groove 45 is provided with a mounting surface. The distance between the guide surface 47 and the mounting surface gradually increases from the side closer to the first driving groove 45 to the side farther away from the first driving groove 45.

[0045] The support frame 42 has a second drive groove 46 that communicates with the first drive groove 45. The drive rod 431 is movably installed in the second drive groove 46. The end of the drive rod 431 near the first drive groove 45 is slidably connected to the guide surface 47. The cylinder 432 is installed on the outer wall of the conveying rod and connected to the drive rod 431.

[0046] The implementation principle of Embodiment 2 of this application is as follows:

[0047] When the cylinder 432 is working, it drives the drive rod 431 to move toward one side of the first drive groove 45. The guide surface 47 guides the anti-blocking rod 41 to move toward the side away from the movable groove 44, so that the anti-blocking rod 41 generates a force perpendicular to the movable groove 44, thereby causing the anti-blocking rod 41 to reciprocate vertically upward. This can stir and push the material, keeping the material in a flowing state in the conveying pipe 1, thereby avoiding equipment vibration and instability caused by material accumulation.

[0048] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stepped chute for a buffer chamber in a cement mill roller press, characterized in that: It includes multiple conveying pipes (1) connected in sequence, and the inner diameter of all conveying pipes (1) decreases from top to bottom; an inclined surface (21) is provided on the side of the conveying pipe (1) near the lower conveying pipe (1), and the inclined surface (21) is used to guide the material into the lower conveying pipe (1).

2. The stepped chute for a cement mill roller press according to claim 1, characterized in that: The inner bottom wall of the conveying pipe (1) is provided with a wear-resistant ring (2), which is connected to the conveying pipe (1) through a disassembly part (3), and the inclined surface (21) is provided on the wear-resistant ring (2).

3. The stepped chute for a cement mill roller press according to claim 2, characterized in that: The disassembly component (3) includes a bolt, the outer wall of the conveying pipe (1) is provided with a threaded hole (31), the side wall of the wear-resistant ring (2) is provided with a first threaded groove (32), and the bolt passes through the threaded hole (31) and connects with the first threaded groove (32).

4. The stepped chute for a cement mill roller press according to claim 2, characterized in that: A rubber layer (22) is provided between the outer wall of the wear-resistant ring (2) and the inner wall of the conveying pipe (1).

5. A stepped chute for a cement mill roller press according to claim 2, characterized in that: The inner wall of the conveying pipe (1) is provided with a guide block (11), and the wear-resistant ring (2) is provided with a guide groove (23) for the guide block (11) to be inserted.

6. The stepped chute for a cement mill roller press according to claim 1, characterized in that: One of the conveying pipes (1) is provided with an anti-blocking component (4), which includes a support frame (42) disposed in the conveying pipe (1), an anti-blocking rod (41) movably installed on the support frame (42), and a driving component (43) that drives the anti-blocking rod (41) to move vertically.

7. A stepped chute for a cement mill roller press according to claim 6, characterized in that: The anti-blocking rod (41) has a second threaded groove (411) on its outer wall.

8. A stepped chute for a cement mill roller press according to claim 6, characterized in that: The support frame (42) has a movable groove (44) for the anti-blocking rod (41) to slide. The driving component (43) includes a cylinder (432) and a driving rod (431). The anti-blocking rod (41) has a first driving groove (45) on its side wall. The support frame (42) has a second driving groove (46) that communicates with the first driving groove (45). The driving rod (431) is movably installed in the second driving groove (46). The cylinder (432) is used to drive the driving rod (431) to slide in the second driving groove (46). The top wall of the first driving groove (45) is provided with a guide surface (47). One end of the driving rod (431) is slidably connected to the guide surface (47). When the driving rod (431) moves toward one side of the first driving groove (45), the guide surface (47) is used to guide the anti-blocking rod (41) to move toward the side away from the movable groove (44).

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