Sealing device of rotary kiln

Abstract

The utility model discloses a sealing device of a rotary kiln, which belongs to the technical field of rotary kilns and comprises a furnace cylinder, communicating pipes are respectively arranged at two ends of the furnace cylinder, connecting flanges are respectively and fixedly sleeved on the outer sides of the end parts of the two communicating pipes, a plurality of mounting holes are respectively arranged on the two connecting flanges, and the mounting holes are communicated with the communicating pipes. The outer side of the connecting flange is sleeved with a sealing cover. According to the utility model, when the end part of the communicating pipe on the furnace barrel is plugged, the sealing cover is sleeved on the outer side of the connecting flange, so that the mounting pin is inserted into the mounting hole in the connecting flange, at the moment, the turntable is rotated to drive the first bevel gear to rotate, and the screw rod is driven to rotate through meshing transmission between the first bevel gear and a plurality of second bevel gears; and a bolt is driven to be inserted into an insertion hole in a mounting pin through screw-thread fit between a screw rod and a telescopic column, so that the sealing cover is mounted on the outer side of the connecting flange, and the function of conveniently mounting the sealing cover is realized.

Description

Technical Field

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

[0002] A rotary kiln is a thermal equipment used for calcining, roasting, or drying granular and powdery materials. It is mainly used for the primary rough processing of powder or mineral materials, such as in the calcination and firing of cement clinker; the preparation of titanium dioxide from kaolin; and the processing of rare earth materials.

[0003] A search revealed that utility model patent CN218296695U discloses a sealing device for a rotary kiln. The technical solution includes: a tank, a through groove, a connecting pipe, a first connecting plate, a second connecting plate, a screw, a nut, a sealing cap, through holes, a placement groove, and a sealing gasket. The tank has through grooves at the middle of both ends. Connecting pipes are installed at the outer sides of the through grooves at both ends of the tank. A first connecting plate is fixed to the outer side of the connecting pipe facing away from the tank. Two second connecting plates are provided. A sealing cap is fixed to the middle of one side of each second connecting plate. A placement groove is formed at the middle of the side of the second connecting plate facing away from the sealing cap. The sealing gasket is placed inside the placement groove. Through holes are arranged in a circular array at the middle of the outer sides of both the first and second connecting plates. This patent is advantageous for sealing both ends of a rotary kiln during cement calcination.

[0004] However, the aforementioned patent has the following shortcomings: when connecting the two connecting discs using multiple nuts and screws, the assembly and disassembly process is cumbersome and inconvenient. Therefore, we propose a sealing device for rotary kilns. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a sealing device for rotary kilns.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A sealing device for a rotary kiln includes a furnace cylinder, characterized in that: connecting pipes are respectively provided at both ends of the furnace cylinder; connecting flanges are fixedly sleeved on the outer sides of the ends of the two connecting pipes; multiple mounting holes are respectively opened on the two connecting flanges; a sealing cover is sleeved on the outer side of the connecting flanges; multiple mounting pins are fixedly connected to the inner wall of the sealing cover; the end of the mounting pin penetrates the inner cavity of the mounting hole and has an insertion hole; multiple square grooves are opened on the side of the sealing cover; a transmission groove is provided inside the sealing cover; screws are rotatably connected to the inner cavities of the multiple square grooves; one end of each of the multiple screws extends... A second bevel gear is fixedly sleeved into the inner cavity of the transmission groove. A rotating column is rotatably connected to the end of the sealing cover. One end of the rotating column extends into the inner cavity of the transmission groove and is fixedly sleeved with a first bevel gear. The first bevel gear and multiple second bevel gears mesh with each other. The other end of the rotating column extends to the outside of the sealing cover and is fixedly connected with a turntable. Telescopic columns are threaded onto the outer sides of the other ends of multiple screws. The ends of multiple telescopic columns extend to the outside of the sealing cover and are fixedly connected with connecting blocks. Pins are fixedly connected to multiple connecting blocks. The ends of multiple pins are movably sleeved into the inner cavity of the insertion hole.

[0008] As a preferred embodiment of this utility model, a plug is fixedly connected to the inner cavity of the sealing cap, the end of the plug is movably sleeved into the inner cavity of the connecting pipe, and the side of the plug is in contact with the inner wall of the connecting pipe.

[0009] As a preferred embodiment of this utility model, a handle is fixedly installed on the end face of the sealing cover.

[0010] In a preferred embodiment of this utility model, the inner wall of the sealing cover fits into the side of the connecting flange.

[0011] In a preferred embodiment of this utility model, the side of the telescopic column is fitted to the inner wall of the square groove.

[0012] In a preferred embodiment of this utility model, the outer diameter of the mounting pin is equal to the inner diameter of the mounting hole.

[0013] In a preferred embodiment of this utility model, the outer diameter of the pin and the inner diameter of the socket are equal.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] In this invention, when the end of the connecting pipe on the furnace drum is sealed, the sealing cover is placed on the outside of the connecting flange, and the mounting pin is inserted into the mounting hole on the connecting flange. At this time, rotating the turntable drives the first bevel gear to rotate. Through the meshing transmission between the first bevel gear and multiple second bevel gears, the screw is driven to rotate. Through the threaded engagement between the screw and the telescopic column, the pin is driven to insert into the insertion hole on the mounting pin, thereby installing the sealing cover on the outside of the connecting flange, realizing the function of convenient installation of the sealing cover. By reversing the turntable, the first bevel gear is driven to rotate. Through the engagement between the first bevel gear, the second bevel gear, the screw, and the telescopic column, the pin is disengaged from the insertion hole on the mounting pin, thereby releasing the fixing of the sealing cover, so that the sealing cover can be removed from the connecting flange, realizing the function of convenient disassembly of the sealing cover. Attached Figure Description

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is an exploded view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the present invention;

[0019] Figure 4 This is an exploded view of the sealing cap and telescopic column of this utility model;

[0020] Figure 5 This is a cross-sectional schematic diagram of the sealing cap of this utility model;

[0021] Figure 6 For this utility model Figure 3 Enlarged diagram of point A in the diagram.

[0022] Description of the numbers in the figure:

[0023] 1. Furnace cylinder; 2. Connecting pipe; 3. Connecting flange; 4. Sealing cover; 5. Transmission groove; 6. Square groove; 7. Rotating column; 8. First bevel gear; 9. Screw; 10. Telescopic column; 11. Connecting block; 12. Turntable; 13. Pin; 14. Mounting pin; 15. Insertion hole; 16. Second bevel gear; 17. Plug; 18. Handle; 19. Mounting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example:

[0028] Please see Figure 1-6 A sealing device for a rotary kiln includes a furnace cylinder 1. Two connecting pipes 2 are respectively installed at both ends of the furnace cylinder 1. Connecting flanges 3 are fixedly sleeved on the outer sides of the ends of the two connecting pipes 2. Multiple mounting holes 19 are respectively opened on the two connecting flanges 3. A sealing cover 4 is sleeved on the outer side of the connecting flanges 3. Multiple mounting pins 14 are fixedly connected to the inner wall of the sealing cover 4. The ends of the mounting pins 14 penetrate the inner cavity of the mounting holes 19 and have insertion holes 15. Multiple square grooves 6 are opened on the side of the sealing cover 4. A transmission groove 5 is provided inside the sealing cover 4. Screws 9 are rotatably connected to the inner cavities of the multiple square grooves 6. One end of each screw 9 extends into the inner cavity of the transmission groove 5. The cavity is fixedly fitted with a second bevel gear 16. The end of the sealing cover 4 is rotatably connected to a rotating column 7. One end of the rotating column 7 extends into the inner cavity of the transmission groove 5 and is fixedly fitted with a first bevel gear 8. The first bevel gear 8 and multiple second bevel gears 16 mesh with each other. The other end of the rotating column 7 extends to the outside of the sealing cover 4 and is fixedly connected to a turntable 12. The outer side of the other end of multiple screws 9 is threaded with telescopic columns 10. The ends of multiple telescopic columns 10 extend to the outside of the sealing cover 4 and are fixedly connected to connecting blocks 11. Pins 13 are fixedly connected to multiple connecting blocks 11. The ends of multiple pins 13 are movably fitted into the inner cavity of the insertion hole 15.

[0029] For details, please refer to Figures 2 to 4A plug 17 is fixedly connected to the inner cavity of the sealing cap 4. The end of the plug 17 is movably sleeved into the inner cavity of the connecting pipe 2, and the side of the plug 17 is in contact with the inner wall of the connecting pipe 2.

[0030] In this embodiment, the connecting pipe 2 is reinforced by inserting the plug 17 into the connecting pipe 2.

[0031] For details, please refer to Figure 1 A handle 18 is fixedly installed on the end face of the sealing cover 4.

[0032] In this embodiment, the handle 18 is used to remove the sealing cover 4.

[0033] For details, please refer to Figure 2 and Figure 4 The inner wall of the sealing cover 4 fits against the side of the connecting flange 3.

[0034] In this embodiment, the stability of the sealing cap 4 on the outside of the connecting flange 3 is ensured, while the sealing cap 4 also ensures the sealing effect on the end of the connecting pipe 2.

[0035] For details, please refer to Figure 4 and Figure 5 The side of the telescopic column 10 fits into the inner wall of the square groove 6.

[0036] In this embodiment, the inner wall of the square groove 6 is used to limit the telescopic column 10, so that the telescopic column 10 can only move along the axial direction of the screw 9.

[0037] For details, please refer to Figure 2 and Figure 4 The outer diameter of the mounting pin 14 is equal to the inner diameter of the mounting hole 19.

[0038] In this embodiment, the stability of the mounting pin 14 inserted into the inner cavity of the mounting hole 19 is ensured.

[0039] For details, please refer to Figure 4 The outer diameter of the pin 13 is equal to the inner diameter of the socket 15.

[0040] In this embodiment, the stability of the pin 13 inserted into the cavity of the socket 15 is ensured.

[0041] Working principle: In use, firstly, the sealing cap 4 is placed on the outside of the connecting flange 3, and at the same time, the plug 17 is inserted into the connecting pipe 2 to seal the inner cavity of the connecting pipe 2. Simultaneously, the mounting pin 14 is inserted into the mounting hole 19 on the connecting flange 3. Then, the turntable 12 is rotated to drive the rotating column 7 and the first bevel gear 8 to rotate. The meshing transmission between the first bevel gear 8 and multiple second bevel gears 16 drives multiple screws 9 to rotate. Through the threaded engagement between multiple screws 9 and multiple telescopic columns 10, the multiple telescopic columns 10 retract into the inner cavity of the square groove 6. At the same time, the connecting blocks 11 and pins 13 at the ends of the multiple telescopic columns 10 move closer to each other, so that the pins 13 are inserted into the insertion holes 15 on the mounting pins 14, thereby fixing the sealing cap 4 on the connecting flange 3 and sealing the end of the connecting pipe 2.

[0042] When it is necessary to remove the sealing cap 4 from the end of the connecting pipe 2, the rotating disc 12 drives the rotating column 7 and the first bevel gear 8 to reverse. The meshing between the first bevel gear 8 and the second bevel gear 16 drives the screw 9 to reverse. The threaded engagement between the screw 9 and the telescopic column 10 drives the telescopic column 10 to extend outward, so as to drive the pin 13 to disengage from the insertion hole 15 on the mounting pin 14, thereby releasing the fixing of the mounting pin 14 and the sealing cap 4, and thus removing the sealing cap 4 from the end of the connecting pipe 2.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A sealing device for a rotary kiln, comprising a furnace cylinder (1), characterized in that: The furnace cylinder (1) is provided with connecting pipes (2) at both ends. Connecting flanges (3) are fixedly sleeved on the outer sides of the ends of the two connecting pipes (2). Multiple mounting holes (19) are opened on the two connecting flanges (3). A sealing cover (4) is sleeved on the outer side of the connecting flange (3). Multiple mounting pins (14) are fixedly connected to the inner wall of the sealing cover (4). The end of the mounting pin (14) penetrates the inner cavity of the mounting hole (19) and has an insertion hole (15). Multiple square grooves (6) are opened on the side of the sealing cover (4). A transmission groove (5) is provided inside the sealing cover (4). Screws (9) are rotatably connected to the inner cavities of the multiple square grooves (6). One end of each screw (9) extends into the inner cavity of the transmission groove (5) and is fixedly sleeved. There is a second bevel gear (16), and a rotating column (7) is rotatably connected to the end of the sealing cover (4). One end of the rotating column (7) extends into the inner cavity of the transmission groove (5) and is fixedly sleeved with a first bevel gear (8). The first bevel gear (8) and a plurality of second bevel gears (16) mesh with each other. The other end of the rotating column (7) extends to the outside of the sealing cover (4) and is fixedly connected with a turntable (12). The outer side of the other end of a plurality of screws (9) is respectively threaded with a telescopic column (10). The ends of the plurality of telescopic columns (10) all extend to the outside of the sealing cover (4) and are fixedly connected with a connecting block (11). A pin (13) is fixedly connected to the plurality of connecting blocks (11). The ends of the plurality of pins (13) are respectively movably sleeved into the inner cavity of the insertion hole (15).

2. The sealing device for a rotary kiln according to claim 1, characterized in that: The inner cavity of the sealing cap (4) is fixedly connected with a plug (17), the end of the plug (17) is movably sleeved into the inner cavity of the connecting pipe (2), and the side of the plug (17) is in contact with the inner wall of the connecting pipe (2).

3. The sealing device for a rotary kiln according to claim 1, characterized in that: A handle (18) is fixedly installed on the end face of the sealing cover (4).

4. The sealing device for a rotary kiln according to claim 1, characterized in that: The inner wall of the sealing cover (4) and the side of the connecting flange (3) are in contact.

5. The sealing device for a rotary kiln according to claim 1, characterized in that: The side of the telescopic column (10) fits into the inner wall of the square groove (6).

6. The sealing device for a rotary kiln according to claim 1, characterized in that: The outer diameter of the mounting pin (14) is equal to the inner diameter of the mounting hole (19).

7. The sealing device for a rotary kiln according to claim 1, characterized in that: The outer diameter of the pin (13) is equal to the inner diameter of the socket (15).

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