A rotary kiln door sealing structure

Abstract

The application provides a rotary kiln door sealing structure, relates to the technical field of rotary kiln, and comprises a door frame. The front side of the door frame is provided with two movable doors. The outer sides of the two movable doors are provided with sealing frames. The front side surface of the door frame is fixedly connected with a base. The upper surface of the base is provided with a guide groove. The inner side of the guide groove is provided with a driving assembly. The upper surface of the base is provided with two sliding grooves. The inner side of the base is provided with a movable cavity. The movable cavity and the two sliding grooves are connected. The inner sides of the two sliding grooves are slidably connected with first connecting plates. The two first connecting plates are fixedly connected with a synchronous plate. Through the cooperation between the first motor, the transmission screw rod, the synchronous plate, the first connecting plate, the sealing frame and the sealing gasket, the sealing effect of the movable door after being closed is effectively ensured, the air leakage at the gap between the movable door and the door frame is avoided, the sealing effect is good, and the practicality is high.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and more specifically, to a rotary kiln door sealing structure. Background Technology

[0002] Rotary kilns are widely used in many production industries such as building materials, metallurgy, chemicals, and environmental protection. They are rotary cylindrical devices used to mechanically, physically, or chemically process solid materials. These devices are called rotary kilns. To ensure a tight seal at the ends of the rotary kiln, a rotary kiln door is typically installed.

[0003] In the prior art, Chinese utility model patent CN217953062U discloses a sealed rotary kiln door. This door seals the gap between two adjacent movable doors by interlocking protrusions and grooves on their connecting end faces. However, in actual use, the sealing of the rotary kiln relies entirely on the engagement of the protrusions and grooves after the movable doors are closed. A gap always exists between the door body and the door frame. After the movable doors are closed, high-temperature airflow continuously escapes through this gap, resulting in air leakage, energy loss, and environmental pollution. This leads to poor sealing of the rotary kiln. Therefore, we propose a rotary kiln door sealing structure to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of poor sealing effect of some rotary kiln door sealing structures.

[0005] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides a rotary kiln door sealing structure, comprising a door frame, two movable doors on the front side of the door frame, and a sealing frame on the exterior of each of the two movable doors. A base is fixedly connected to the front surface of the door frame, a guide groove is formed on the upper surface of the base, a drive assembly is disposed inside the guide groove, two sliding grooves are formed on the upper surface of the base, and a movable chamber is formed inside the base, the movable chamber being connected to the two sliding grooves. A first connecting plate is slidably connected inside each of the two sliding grooves, and a synchronization plate is fixedly connected between the two first connecting plates. The synchronization plate is slidably connected inside the movable chamber, a transmission screw is rotatably connected inside the movable chamber, and the synchronization plate is threaded onto the outside of the transmission screw. A first motor is fixedly connected to the outside of the base, and the output shaft of the first motor rotatably penetrates into the interior of the base and is fixedly connected to the transmission screw.

[0006] As a preferred technical solution of this application, a sealing gasket is provided on the side surface of both sealing frames facing the movable door.

[0007] As a preferred technical solution of this application, the drive assembly includes a bidirectional threaded rod, which is rotatably connected inside the guide groove. A second motor is fixedly connected to the outside of the base. The output shaft of the second motor rotatably passes through the inside of the base and is fixedly connected to the bidirectional threaded rod through a coupling. Two second connecting plates are threadedly sleeved on the two opposite threads of the bidirectional threaded rod. The two second connecting plates are slidably connected inside the guide groove. The two second connecting plates are fixedly connected to two movable doors respectively.

[0008] As a preferred technical solution of this application, a clearance groove is provided on the side surface of the sealing frame facing the second connecting plate.

[0009] As a preferred technical solution of this application, a water passage is provided inside the movable door, and an inlet pipe and an outlet pipe are fixedly connected to the front surface of the movable door, both of which are connected to the water passage.

[0010] As a preferred technical solution of this application, the upper surface of the base is fixedly connected with two first connecting pipes and two second connecting pipes. The two first connecting pipes are respectively aligned with the water inlet pipes of the two movable door surfaces, and the two second connecting pipes are respectively aligned with the water outlet pipes of the two movable door surfaces.

[0011] As a preferred technical solution of this application, a corrugated telescopic tube is fixedly connected to the end of the first connecting pipe and the second connecting pipe away from the base. A connector is fixedly connected to the outside of the corrugated telescopic tube. The connector and the sealing frame are fixedly connected. The inner diameter of the corrugated telescopic tube is adapted to the outer diameter of the inlet pipe and the outlet pipe.

[0012] As a preferred technical solution of this application, the front surface of the base is fixedly connected with two third connecting pipes and a fourth connecting pipe, the two third connecting pipes are respectively connected to two first connecting pipes, and the two fourth connecting pipes are respectively connected to two second connecting pipes.

[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 cooperation between the structure of the first motor, transmission screw, synchronous plate, first connecting plate, sealing frame and sealing gasket, the sealing effect of the movable door after closing is effectively guaranteed, and air leakage is avoided in the gap between the movable door and the door frame. The sealing effect is good and the practicality is high.

[0016] 2. Through the coordination of the sealing frame, corrugated expansion tube, first connecting pipe, second connecting pipe, third connecting pipe, fourth connecting pipe and water passage, the cooling water circulation effectively removes the heat absorbed by the movable door, keeping the door body in a low-temperature and uniform temperature field. This solves the problem of warping, bulging and other deformation of the door body caused by thermal stress in high-temperature environments, thereby further improving the sealing effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a rotary kiln door sealing structure according to the present invention;

[0018] Figure 2 This is a schematic diagram of the door frame structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the movable chamber of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the base of this utility model;

[0021] Figure 5 This is a cross-sectional view of the water passage of this utility model.

[0022] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0023] The image shows:

[0024] 1. Door frame; 2. Movable door; 3. Sealing frame; 4. Base; 5. Guide groove; 6. Sliding groove; 7. Movable chamber; 8. First connecting plate; 9. Synchronizing plate; 10. Transmission screw; 11. First motor; 12. Sealing gasket; 13. Bidirectional threaded rod; 14. Second motor; 15. Second connecting plate; 16. Clearance groove; 17. Water passage; 18. Inlet pipe; 19. Outlet pipe; 20. First connecting pipe; 21. Second connecting pipe; 22. Corrugated expansion pipe; 23. Connector; 24. Third connecting pipe; 25. Fourth connecting pipe. 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 rotary kiln door sealing structure includes a door frame 1, with two movable doors 2 on the front side of the door frame 1. Each movable door 2 has a sealing frame 3 on its exterior. A base 4 is fixedly connected to the front surface of the door frame 1. A guide groove 5 is formed on the upper surface of the base 4, and a drive assembly is installed inside the guide groove 5. Two sliding grooves 6 are formed on the upper surface of the base 4, and a movable chamber 7 is formed inside the base 4. The movable chamber 7 communicates with the two sliding grooves 6. A first connecting plate 8 is slidably connected inside each of the two sliding grooves 6. A synchronization plate 9 is fixedly connected between the two first connecting plates 8 and slidably connected inside the movable chamber 7. The interior of chamber 7 is rotatably connected to a transmission screw 10. A synchronous plate 9 is threaded onto the outside of the transmission screw 10. A first motor 11 is fixedly connected to the outside of the base 4. The output shaft of the first motor 11 rotates through the interior of the base 4 and is fixedly connected to the transmission screw 10 via a coupling. The first motor 11 can be started by an external controller to drive the rotation of the transmission screw 10. The rotation of the transmission screw 10 can drive the synchronous plate 9 to slide inside the movable chamber 7. The movement of the synchronous plate 9 can drive the movement of the upper first connecting plate 8, thereby driving the sealing frame 3 to move, and finally achieving the sealing frame 3 pressing against the outside of the movable door 2 and the door frame 1.

[0031] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, sealing gaskets 12 are provided on the side surfaces of both sealing frames 3 facing the movable door 2. The sealing gaskets 12 can effectively improve the sealing effect at the gap between the movable door 2 and the door frame 1, as well as the sealing effect between the movable door 2 and the sealing frame 3.

[0032] In the above embodiment, the sealing gasket 12 is made of a high-temperature resistant flexible sealing strip, such as ceramic fiber rope or graphite braided tape. After the two movable doors 2 are closed, the sealing frame 3 presses tightly against the outside of the door frame 1 and the movable door 2, while flattening the sealing gasket 12 and filling all gaps, thereby achieving a secondary seal at the gaps.

[0033] Example 2

[0034] The rotary kiln door sealing structure provided in Example 1 has been further optimized, specifically, as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the drive assembly includes a bidirectional threaded rod 13, which is rotatably connected inside the guide groove 5. A second motor 14 is fixedly connected to the outside of the base 4. The output shaft of the second motor 14 rotates through the inside of the base 4 and is fixedly connected to the bidirectional threaded rod 13 via a coupling. Two opposite threads on the two ends of the bidirectional threaded rod 13 are threaded with second connecting plates 15. The two second connecting plates 15 are slidably connected inside the guide groove 5. The two second connecting plates 15 are fixedly connected to the two movable doors 2 respectively. The rotation of the bidirectional threaded rod 13 can be driven by starting the second motor 14 through an external controller. The rotation of the bidirectional threaded rod 13 can drive the two second connecting plates 15 to slide inside the guide groove 5, thereby driving the two movable doors 2 to open or close. When closed, the protrusions and grooves on the opposite sides of the two movable doors 2 will fit together.

[0035] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a relief groove 16 is provided on the side surface of the sealing frame 3 facing the second connecting plate 15. The relief groove 16 facilitates the sealing frame 3 to be engaged with the outside of the second connecting plate 15.

[0036] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, a water passage 17 is provided inside the movable door 2. An inlet pipe 18 and an outlet pipe 19 are fixedly connected to the front surface of the movable door 2. Both the inlet pipe 18 and the outlet pipe 19 are connected to the water passage 17. Through the cooperation between the water passage 17, the inlet pipe 18 and the outlet pipe 19, cooling water can flow inside the movable door 2, thereby reducing the temperature of the movable door 2 and preventing deformation such as warping and bulging caused by uneven heating, thus ensuring the sealing effect.

[0037] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, two first connecting pipes 20 and two second connecting pipes 21 are fixedly connected to the upper surface of the base 4. The two first connecting pipes 20 are aligned with the water inlet pipes 18 on the surfaces of the two movable doors 2, and the two second connecting pipes 21 are aligned with the water outlet pipes 19 on the surfaces of the two movable doors 2.

[0038] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, corrugated expansion pipes 22 are fixedly connected to the ends of the first connecting pipe 20 and the second connecting pipe 21 away from the base 4. A connector 23 is fixedly connected to the outside of the corrugated expansion pipe 22, and the connector 23 is fixedly connected to the sealing frame 3. Pipe connectors, such as threaded pipe fittings, are provided at the ends of the corrugated expansion pipe 22 and the outlet pipe 19. Connection and sealing are achieved by tightening the internal and external threads. After the corrugated expansion pipe 22 and the outlet pipe 19 are connected, the external thread of the corrugated expansion pipe 22 is tightened to the outlet pipe 19. The outer side of the sealing frame 3 ensures the stability and sealing of the connection between the outlet pipe 19 and the corrugated expansion pipe 22, ensuring the smooth delivery of the medium and effectively preventing leakage. The movement of the sealing frame 3 can drive the movement of the connecting piece 23, thereby driving the movement of the corrugated expansion pipe 22. Subsequently, the four corrugated expansion pipes 22 will be respectively fitted outside the two inlet pipes 18 and the two outlet pipes 19 with the help of the sealing piece, thereby realizing the connection between the inlet pipe 18, the outlet pipe 19 and the first connecting pipe 20 and the second connecting pipe 21.

[0039] Furthermore, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, two third connecting pipes 24 and four connecting pipes 25 are fixedly connected to the front surface of the base 4. The two third connecting pipes 24 are respectively connected to the two first connecting pipes 20, and the two fourth connecting pipes 25 are respectively connected to the two second connecting pipes 21. The setting of the third connecting pipes 24 and the fourth connecting pipes 25 facilitates connection with external water supply equipment and water circulation cooling equipment, thereby ensuring the effect of cooling water circulation and cooling effect.

[0040] In the above embodiments, power supplies, wires, controllers, and microcomputers are also provided in conjunction with the first motor 11 and the second motor 14. Since these are not the main structures, they will not be described in detail here.

[0041] The application process of the rotary kiln door sealing structure provided by this utility model is as follows:

[0042] The second motor 14 can be started by an external controller to drive the rotation of the bidirectional threaded rod 13. The rotation of the bidirectional threaded rod 13 can drive the two second connecting plates 15 to slide inside the guide groove 5, thereby driving the two movable doors 2 to open or close. When closed, the protrusions and grooves on opposite sides of the two movable doors 2 will fit together.

[0043] After the two movable doors 2 are closed, the first motor 11 is started by the external controller, which drives the transmission screw 10 to rotate. The rotation of the transmission screw 10 drives the synchronous plate 9 to slide inside the movable chamber 7. The movement of the synchronous plate 9 drives the movement of the upper first connecting plate 8, thereby driving the sealing frame 3 to move, so that the sealing frame 3 is pressed against the outside of the movable door 2 and the door frame 1.

[0044] When the sealing frame 3 moves, the movement of the sealing frame 3 will drive the movement of the connecting piece 23, thereby driving the movement of the corrugated expansion tube 22. Subsequently, the four corrugated expansion tubes 22 will be respectively fitted outside the two inlet pipes 18 and the two outlet pipes 19, thereby realizing the connection between the inlet pipes 18, the outlet pipes 19 and the first connecting pipe 20 and the second connecting pipe 21. Subsequently, with the help of the third connecting pipe 24 and the fourth connecting pipe 25, it will be connected to the external water supply equipment and the water circulation cooling equipment, and finally realize the circulation of cooling water inside the water passage 17 to cool down the movable door 2.

[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 rotary kiln door sealing structure, comprising a door frame (1), characterized in that: Two movable doors (2) are provided on the front side of the door frame (1). A sealing frame (3) is provided on the outside of each of the two movable doors (2). A base (4) is fixedly connected to the front surface of the door frame (1). A guide groove (5) is provided on the upper surface of the base (4). A drive assembly is provided inside the guide groove (5). Two sliding grooves (6) are provided on the upper surface of the base (4). An active chamber (7) is provided inside the base (4). The active chamber (7) is connected to the two sliding grooves (6). The base (4) is slidably connected to a first connecting plate (8), and a synchronization plate (9) is fixedly connected between the two first connecting plates (8). The synchronization plate (9) is slidably connected inside the movable chamber (7). A transmission screw (10) is rotatably connected inside the movable chamber (7). The synchronization plate (9) is threaded onto the outside of the transmission screw (10). A first motor (11) is fixedly connected to the outside of the base (4). The output shaft of the first motor (11) rotates through the inside of the base (4) and is fixedly connected to the transmission screw (10).

2. The rotary kiln door sealing structure according to claim 1, characterized in that, Both of the sealing frames (3) have sealing gaskets (12) on the side of their surfaces facing the movable door (2).

3. The rotary kiln door sealing structure according to claim 2, characterized in that, The drive assembly includes a bidirectional threaded rod (13), which is rotatably connected inside the guide groove (5). A second motor (14) is fixedly connected to the outside of the base (4). The output shaft of the second motor (14) rotatably passes through the inside of the base (4) and is fixedly connected to the bidirectional threaded rod (13) through a coupling. Two opposite threads of the bidirectional threaded rod (13) are threaded with second connecting plates (15). The two second connecting plates (15) are slidably connected inside the guide groove (5). The two second connecting plates (15) are fixedly connected to the two movable doors (2) respectively.

4. The rotary kiln door sealing structure according to claim 3, characterized in that, The sealing frame (3) has a relief groove (16) on the side surface facing the second connecting plate (15).

5. The rotary kiln door sealing structure according to claim 4, characterized in that, The movable door (2) has a water passage (17) inside. The front surface of the movable door (2) is fixedly connected to a water inlet pipe (18) and a water outlet pipe (19). Both the water inlet pipe (18) and the water outlet pipe (19) are connected to the water passage (17).

6. The rotary kiln door sealing structure according to claim 5, characterized in that, The upper surface of the base (4) is fixedly connected with two first connecting pipes (20) and two second connecting pipes (21). The two first connecting pipes (20) are aligned with the water inlet pipes (18) on the surfaces of the two movable doors (2), and the two second connecting pipes (21) are aligned with the water outlet pipes (19) on the surfaces of the two movable doors (2).

7. The rotary kiln door sealing structure according to claim 6, characterized in that, The first connecting pipe (20) and the second connecting pipe (21) are both fixedly connected to a corrugated telescopic pipe (22) at the end away from the base (4). A connector (23) is fixedly connected to the outside of the corrugated telescopic pipe (22). The connector (23) is fixedly connected to the sealing frame (3). The inner diameter of the corrugated telescopic pipe (22) is adapted to the outer diameter of the water inlet pipe (18) and the water outlet pipe (19).

8. The rotary kiln door sealing structure according to claim 7, characterized in that, Two third connecting pipes (24) and a fourth connecting pipe (25) are fixedly connected to the front surface of the base (4). The two third connecting pipes (24) are respectively connected to the two first connecting pipes (20), and the two fourth connecting pipes (25) are respectively connected to the two second connecting pipes (21).

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