Cement firing device for refractory bricks in kiln

Abstract

The utility model relates to the technical field of cement processing, in particular to a cement firing device for refractory bricks in a kiln. According to the technical scheme, the rotary kiln comprises a rotary kiln body, a lantern ring, a motor, a base, a guide rod and a pressing plate, the rotary kiln body is arranged above the base, refractory bricks are arranged on the inner wall of the rotary kiln body, the outer wall of the rotary kiln body is sleeved with a gear ring, the motor is arranged at the upper end of the base, and a gear meshed with the gear ring is arranged at the output end of the motor; two groups of symmetrically distributed rotating rings are arranged on the outer wall of the rotary kiln, rotating seats rotationally mounted with the rotating rings are arranged at the upper end of the base, a pressing plate is arranged in the rotary kiln, a guide rod is arranged at one end of the pressing plate, a spring sleeves the outer wall of the guide rod, a lantern ring sleeves the outer wall of the rotary kiln, and an extrusion block is arranged on the inner wall of the lantern ring. According to the utility model, a plurality of groups of pressing plates for elastic extrusion are arranged in the rotary kiln, so that cement which is possibly caked and fired is impacted and loosened, and the cement is uniformly fired and processed.

Description

Technical Field

[0001] This utility model relates to the field of cement processing technology, and in particular to a cement firing device for refractory bricks in a kiln. Background Technology

[0002] A rotary kiln is a core piece of equipment used in the calcination stage of cement production. Inside the rotary kiln, cement raw materials are calcined and reacted at high temperatures to transform into granular clinker, which is the primary finished product of cement. In cement production, the inner wall and other parts of the rotary kiln usually need to be lined with refractory bricks to withstand harsh conditions such as high temperature, chemical erosion and mechanical wear.

[0003] The quality of refractory bricks used in the kiln directly affects the operating rate and clinker output of the cement kiln. When the material powder suspension flow inside the rotary kiln is unevenly distributed, it can easily lead to differences between high-temperature and low-temperature areas, thus promoting agglomeration. If the feeding speed exceeds the equipment's processing capacity or heat transfer rate, it may cause discontinuity and accumulation, ultimately leading to agglomeration. Agglomeration affects the quality of cement firing. To address this issue, we propose a cement firing device using refractory bricks in the kiln. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a cement firing device for refractory bricks in a kiln.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cement firing device for refractory bricks in a kiln, comprising a rotary kiln, a collar, a motor, a base, a guide rod, and a pressure plate. The rotary kiln is positioned above the base, and refractory bricks are arranged on the inner wall of the rotary kiln. A gear ring is fitted onto the outer wall of the rotary kiln. A motor is positioned at the upper end of the base, and a gear meshing with the gear ring is positioned at the output end of the motor. Two sets of symmetrically distributed rotating rings are arranged on the outer wall of the rotary kiln. A rotating seat rotatably mounted to the rotating rings is positioned at the upper end of the base. A pressure plate is arranged inside the rotary kiln, and a guide rod is positioned at one end of the pressure plate. A spring is fitted onto the outer wall of the guide rod. A collar is fitted onto the outer wall of the rotary kiln, and an extrusion block is arranged on the inner wall of the collar.

[0006] When using the cement firing device for refractory bricks in the kiln in this solution, the motor drives the gear to rotate. Because the gear meshes with the gear ring, and the rotary kiln rotates inside the rotating seat via the rotating ring, the rotary kiln is supported by rotation. In turn, the gear drives the gear ring to rotate, and the cement raw material fired inside the rotary kiln flows. When the ball passes through the extrusion block, it is resisted by the support of the extrusion block and gradually squeezes the guide rod, gradually applying extrusion force to the spring. This causes the pressure plate to slide inside the sliding sleeve, pressing the agglomerated cement raw material below the rotary kiln, causing the agglomerated cement to loosen. During the flow process under the rotation of the rotary kiln, the loosened cement raw material is fully fired and processed.

[0007] Preferably, the rotary kiln has an mounting plate on its outer wall, and a sliding sleeve is provided inside the mounting plate. One end of the guide rod is slidably mounted inside the sliding sleeve, and a bracket located on the upper end of the base is provided at the lower end of the collar. The guide rod is fixed inside the rotary kiln by the mounting plate, and then slidably guided by the sliding sleeve.

[0008] Preferably, a limit ring is provided at one end of the guide rod, and one end of the spring is connected to the spring. The limit ring supports one end of the spring, and the elastic force of the spring acts on the guide rod.

[0009] Preferably, one end of the limiting ring is provided with a mounting base, and a ball bearing is rotatably mounted inside one end of the mounting base. The ball bearing inside the mounting base is rotatably supported, and the rolling ball bearing is compressed by the extrusion block, reducing the resistance when the rotary kiln rotates.

[0010] Preferably, the outer wall of the rotary kiln is provided with multiple sets of screws that are slidably inserted into the interior of the mounting plate, and nuts are rotatably sleeved on the outer wall of the screws. When the mounting plate is installed with the rotary kiln, it is fixed by connecting the screws and securing them to the outer wall of the screws with nuts.

[0011] Preferably, one end of the pressure plate is provided with relatively distributed guide surfaces, and the other end of the pressure plate is provided with an arc surface consistent with the inner wall of the rotary kiln. When the guide surface faces upward, the cement raw material remaining at the upper end slides down through the guide surface, and when the cement is pressed by the arc surface, it better adapts to the inner wall of the rotary kiln.

[0012] Preferably, the refractory brick includes an inner refractory layer and an outer wear-resistant layer.

[0013] Preferably, the refractory brick includes an insulating layer, a heat insulation layer, and a support layer located between the refractory layer and the wear-resistant layer.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model sets up pressure plates in the middle stage of the rotary kiln. The pressure plates rotate with the rotary kiln. Without affecting the rotation of the rotary kiln, when passing through the extrusion block, the guide rod is forced to compress the spring, which in turn drives the pressure plate, which gradually moves to a vertical position, to impact the material at the lower end of the rotary kiln. Because there are multiple sets of pressure plates, the calcined cement is broken up, so that the calcined cement is fully calcined and processed, ensuring the quality of the cement. At the same time, the pressure rod is elastically reset by the spring when passing through the extrusion block, ensuring the effective flow of cement inside the rotary kiln. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a side sectional three-dimensional structural schematic diagram of the rotary kiln of this utility model;

[0019] Figure 4 This is a side view of the three-dimensional structure of the guide rod of this utility model;

[0020] Figure 5 This is a side sectional three-dimensional structural diagram of the refractory brick of this utility model.

[0021] Reference numerals in the attached drawings: 1. Rotary kiln; 2. Rotating seat; 3. Rotating ring; 4. Collar ring; 5. Gear ring; 6. Motor; 7. Gear; 8. Refractory brick; 9. Base; 10. Support; 11. Extrusion block; 12. Guide rod; 13. Mounting plate; 14. Pressure plate; 15. Arc surface; 16. Spring; 17. Limiting ring; 18. Mounting seat; 19. Ball bearing; 20. Sliding sleeve; 21. Guide surface; 22. Refractory layer; 23. Wear-resistant layer; 24. Insulating layer; 25. Heat insulation layer; 26. Support layer. Detailed Implementation

[0022] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-5 As shown, the present invention proposes a cement firing device for refractory bricks in a kiln, including a rotary kiln 1, a collar 4, a motor 6, a base 9, a guide rod 12, and a pressure plate 14. The rotary kiln 1 is arranged above the base 9, and a gear ring 5 is sleeved on the outer wall of the rotary kiln 1. The motor 6 is arranged at the upper end of the base 9, and a gear 7 that meshes with the gear ring 5 is arranged at the output end of the motor 6. Two sets of symmetrically distributed rotating rings 3 are arranged on the outer wall of the rotary kiln 1. A rotating seat 2 that is rotatably installed with the rotating rings 3 is arranged at the upper end of the base 9. A pressure plate 14 is arranged inside the rotary kiln 1, and a guide rod 12 is arranged at one end of the pressure plate 14. A spring 16 is sleeved on the outer wall of the guide rod 12. A collar 4 is sleeved on the outer wall of the rotary kiln 1, and an extrusion block 11 is arranged on the inner wall of the collar 4.

[0024] The outer wall of the rotary kiln 1 is provided with an installation plate 13, and a sliding sleeve 20 is provided inside the installation plate 13. One end of the guide rod 12 is slidably installed inside the sliding sleeve 20, and a bracket 10 located on the upper end of the base 9 is provided at the lower end of the collar 4.

[0025] One end of the guide rod 12 is provided with a limit ring 17, and one end of the spring 16 is connected to the spring 16;

[0026] One end of the limiting ring 17 is provided with a mounting base 18, and a ball bearing 19 is rotatably mounted inside one end of the mounting base 18.

[0027] The outer wall of the rotary kiln 1 is provided with multiple sets of screws that are slidably inserted into the mounting plate 13, and nuts are rotatably sleeved on the outer wall of the screws;

[0028] One end of the pressure plate 14 is provided with relatively distributed guide surfaces 21, and one end of the pressure plate 14 is provided with an arc surface 15 that is consistent with the inner wall of the rotary kiln 1.

[0029] Based on the implementation steps of Example 1: Driven by motor 6 and transmitted by gear 7, the rotary kiln 1 can be rotated stably and reliably. The reasonable structural design of components such as extrusion block 11, guide rod 12, spring 16, and pressure plate 14 can effectively control the pressing force on the lumpy cement raw materials. Through the pressing action, the problem of cement lumps inside the rotary kiln 1 can be effectively broken up and solved, which helps to uniformly burn and process cement raw materials and improve product quality. The entire equipment has a simple and clear structure, and the components are closely matched, making it easy to inspect and maintain. It avoids the use of electrical equipment and is reasonably coordinated with the rotary kiln 1.

[0030] like Figures 1-5 As shown, compared with Embodiment 1, the cement firing device for refractory bricks in the kiln proposed by this utility model further includes: refractory bricks 8 are provided on the inner wall of the rotary kiln 1;

[0031] The refractory brick 8 includes a refractory layer 22 on the inner side and a wear-resistant layer 23 on the outer side;

[0032] Refractory brick 8 includes an insulating layer 24, a heat insulation layer 25, and a support layer 26 located between the refractory layer 22 and the wear-resistant layer 23;

[0033] In this embodiment, the refractory slurry coating or the wear-resistant layer 23 containing high-hardness ceramic particles can resist external wear and extend service life. The high-temperature refractory fiber insulation layer 25 reduces heat loss and improves equipment thermal efficiency. The lightweight perlite insulation layer 24 improves the equipment's heat preservation performance and reduces heat consumption. The aluminum-magnesium-carbon brick support layer 26 strengthens the overall structural stability and prevents deformation and breakage. The graphite ceramic refractory layer 22 can withstand extremely high temperatures, resist heat and chemical erosion, extend the service life of the refractory bricks 8, and assist the rotary kiln 1 in firing cement.

[0034] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cement firing apparatus for refractory bricks in a kiln, comprising a rotary kiln (1), a collar (4), a motor (6), a base (9), a guide rod (12), and a pressure plate (14), characterized in that: A rotary kiln (1) is provided above the base (9). The inner wall of the rotary kiln (1) is provided with refractory bricks (8). A gear ring (5) is sleeved on the outer wall of the rotary kiln (1). A motor (6) is provided at the upper end of the base (9). A gear (7) meshing with the gear ring (5) is provided at the output end of the motor (6). Two sets of symmetrically distributed rotating rings (3) are provided on the outer wall of the rotary kiln (1). A rotating seat (2) rotatably mounted with the rotating rings (3) is provided at the upper end of the base (9). A pressure plate (14) is provided inside the rotary kiln (1). A guide rod (12) is provided at one end of the pressure plate (14). A spring (16) is sleeved on the outer wall of the guide rod (12). A collar (4) is sleeved on the outer wall of the rotary kiln (1). An extrusion block (11) is provided on the inner wall of the collar (4).

2. The cement firing apparatus for refractory bricks in a kiln according to claim 1, characterized in that: The rotary kiln (1) is provided with an installation plate (13) on its outer wall. A sliding sleeve (20) is provided inside the installation plate (13). One end of the guide rod (12) is slidably installed inside the sliding sleeve (20). A bracket (10) located on the upper end of the base (9) is provided at the lower end of the collar (4).

3. The cement firing apparatus for refractory bricks in a kiln according to claim 1, characterized in that: One end of the guide rod (12) is provided with a limit ring (17), and one end of the spring (16) is connected to the spring (16).

4. The cement firing apparatus for refractory bricks in a kiln according to claim 3, characterized in that: The limiting ring (17) is provided with a mounting base (18) at one end, and a ball bearing (19) is rotatably mounted inside the mounting base (18).

5. The cement firing apparatus for refractory bricks in a kiln according to claim 1, characterized in that: The outer wall of the rotary kiln (1) is provided with multiple sets of screws that are slidably inserted into the mounting plate (13), and the outer wall of the screws is rotatably sleeved with nuts.

6. The cement firing apparatus for refractory bricks in a kiln according to claim 1, characterized in that: One end of the pressure plate (14) is provided with relatively distributed guide surfaces (21), and the other end of the pressure plate (14) is provided with an arc surface (15) that is consistent with the inner wall of the rotary kiln (1).

7. The cement firing apparatus for refractory bricks in a kiln according to claim 1, characterized in that: The refractory brick (8) includes a refractory layer (22) on the inner side and a wear-resistant layer (23) on the outer side.

8. The cement firing apparatus for refractory bricks in a kiln according to claim 7, characterized in that: The refractory brick (8) includes an insulating layer (24), a heat insulation layer (25), and a support layer (26) located between the refractory layer (22) and the wear-resistant layer (23).

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