Sealing device for entering rotary kiln

Abstract

The utility model relates to a rotary kiln entering sealing device, which belongs to the technical field of rotary kilns and comprises a rotary kiln and a kiln head cover connected with a kiln head of the rotary kiln, and a sealing device is connected between the kiln head cover and the rotary kiln. The sealing device comprises a lower end cover fixedly installed on the kiln head cover, an upper end cover fixedly connected to the lower end cover and a movable module arranged between the lower end cover and the upper end cover. According to the sealing device for entering the rotary kiln, the upper end cover and the lower end cover are arranged to be mutually buckled and sealed, and the built-in movable mold is rotationally and hermetically connected between the upper end cover and the lower end cover, so that the rotary kiln can be hermetically connected in the state of rotating relative to the kiln head cover; therefore, the silica gel ring connected outside the rotary kiln can move relative to the pressing ring, the movement range is provided so as to adapt to the jumping phenomenon of the rotary kiln, and at the moment, the upper end cover and the lower end cover are buckled and sealed.

Description

Technical Field

[0001] The present application relates to the technical field of rotary kilns, and specifically to a sealing device for the inlet of a rotary kiln. Background Art

[0002] The sealing of the inlet of a rotary kiln refers to the installation of a sealing device at the inlet of the rotary kiln to prevent materials and hot gas from leaking out from the inlet, and to ensure the high-temperature and high-pressure environment inside the rotary kiln. The sealing device is usually made of heat-resistant and wear-resistant materials, which can effectively prevent the leakage of materials and hot gas, and has certain elasticity and sealing performance to ensure the normal operation and production efficiency of the rotary kiln.

[0003] The sealing at the inlet of the rotary kiln, that is, the sealing of the kiln head part, commonly adopts the fish scale sealing method. This method is the relatively mainstream sealing form at the present stage. Due to its simple installation and maintenance, it can be used for both the kiln head sealing and the kiln tail sealing. The working principle of the fish scale sealing is to prevent materials and hot gas from leaking out from the inlet of the rotary kiln through the pressure and friction between the sealing pieces. During the operation of the rotary kiln, there will be a jumping phenomenon. Affected by the jumping phenomenon, the sealing effect of the fish scale seal is likely to be reduced, causing external air to interfere with the inside of the rotary kiln. For this reason, a sealing device for the inlet of a rotary kiln is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present application provides a sealing device for the inlet of a rotary kiln, which has the advantages of shaft sealing and improved sealing effect.

[0005] To achieve the above object, the present application provides the following technical solution: A sealing device for the inlet of a rotary kiln, comprising a rotary kiln and a kiln head cover connected to the kiln head of the rotary kiln, and a sealing device is connected between the kiln head cover and the rotary kiln;

[0006] The sealing device includes a lower end cover fixedly installed on the kiln head cover, an upper end cover fixedly connected to the lower end cover, and a moving module disposed between the lower end cover and the upper end cover;

[0007] The moving module includes a silica gel ring connected to the rotary kiln and a pressing ring for connecting the silica gel ring. The number of the pressing rings is two, and a second flange is integrally extended on the inner wall of each pressing ring. The two pressing rings are buckled on the upper and lower sides of the silica gel ring.

[0008] Further, a clamp is sleeved outside the silica gel ring. The clamp includes a semi-circular ring portion and an extension ear integrally connected to the end of the ring portion. The two ring portions are buckled outside the silica gel ring.

[0009] Further, an annular portion is recessed on the outer wall of the silica gel ring, and the clamp is located on the annular portion outside the silica gel ring.

[0010] Further, grooves for the sliding of the extension ears are formed on the adjacent side surfaces of the two pressure rings. The extension ears slide relative to the grooves, and the length of the grooves is greater than that of the extension ears.

[0011] Further, compression grooves are also formed on the adjacent side surfaces of the two pressure rings. A spring seat is fixedly installed on the compression grooves, and a compression spring is fixedly installed on the spring seat.

[0012] Further, first flange platforms are integrally extended on the inner walls of the upper end cover and the lower end cover, and a static mold ring is installed on the first flange platforms.

[0013] Further, pre-tightening holes are penetrated through both the static mold ring and the first flange platforms. The length of the upper end cover is greater than that of the lower end cover, and bolt holes are penetrated and installed on the lower end cover and the upper end cover.

[0014] Further, a sealing ring is fixedly installed between the opposite side surfaces of the lower end cover and the upper end cover.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0016] For the rotary kiln inlet sealing device, by setting the upper end cover and the lower end cover to be buckled and sealed with each other, and a moving mold is arranged inside to be rotationally sealed and connected between the upper end cover and the lower end cover, so as to facilitate the sealing connection of the rotary kiln in a state of rotating relative to the kiln head cover. Further, a pressure spring, extension ears and grooves are arranged inside the pressure ring, so as to facilitate the silica gel ring connected outside the rotary kiln to move relative to the pressure ring, thereby providing a movement amplitude to facilitate adapting to the jumping phenomenon of the rotary kiln. At this time, due to the buckling and sealing of the upper end cover and the lower end cover, the practicability of the device can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present application;

[0018] Figure 2 is the exploded structural schematic diagram of the upper end cover and the lower end cover of the present application;

[0019] Figure 3 is the structural schematic diagram of the silica gel ring of the present application;

[0020] Figure 4 is the structural schematic diagram of the upper end cover of the present application.

[0021] In the figure: 1, rotary kiln; 2, kiln head hood; 3, lower end cover; 4, upper end cover; 5, first edge platform; 6, static mold ring; 7, pre-tightening hole; 8, pressing ring; 9, second edge platform; 10, silica gel ring; 11, clamp; 111, annular part; 112, extension ear; 12, groove; 13, compression groove; 14, spring seat; 15, compression spring; 16, bolt hole; 17, sealing ring. Specific embodiments

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0023] Please refer to Figures 1-4 , a sealing device for a rotary kiln inlet in this embodiment includes a rotary kiln 1 and a kiln head hood 2 connected to the kiln head of the rotary kiln 1. A sealing device is connected between the kiln head hood 2 and the rotary kiln 1 for sealing the inlet of the rotary kiln 1.

[0024] In this embodiment, the sealing device includes a lower end cover 3 fixedly installed on the kiln head hood 2, an upper end cover 4 fixedly connected to the lower end cover 3, and a moving module disposed between the lower end cover 3 and the upper end cover 4, wherein the rotary kiln 1 is connected to the moving module.

[0025] It should be noted that the moving module includes a silica gel ring 10 connected to the rotary kiln 1 and a pressing ring 8 for connecting the silica gel ring 10. The number of pressing rings 8 is two, and a second edge platform 9 is integrally extended on the inner wall of the pressing ring 8. The two pressing rings 8 are buckled on the upper and lower sides of the silica gel ring 10.

[0026] With this setting, the silica gel ring 10 can be attached to the outer wall of the rotary kiln 1 to connect the rotary kiln 1.

[0027] To stabilize the silica gel ring 10, a clamp 11 is sleeved outside the silica gel ring 10 in this embodiment. The clamp 11 includes a semicircular annular part 111 and extension ears 112 integrally connected to the ends of the annular part 111. The two annular parts 111 are buckled outside the silica gel ring 10 and fixed by bolts for two adjacent extension ears 112, so that the silica gel ring 10 is fixed by the clamp 11.

[0028] Preferably, a circular ring part is recessed on the outer wall of the silica gel ring 10, and the clamp 11 is located on the circular ring part outside the silica gel ring 10. With this setting, the connection stability between the clamp 11 and the silica gel ring 10 is improved.

[0029] In this embodiment, on the adjacent side surfaces of the two retaining rings 8, there are grooves 12 for the sliding of the extension ears 112. The extension ears 112 slide relative to the grooves 12, and the length of the grooves 12 is greater than that of the extension ears 112, so that the extension ears 112 and the silica gel ring 10 can have an adaptation type of rotation relative to the retaining rings 8.

[0030] It should be noted that on the adjacent side surfaces of the two retaining rings 8, there are also compression grooves 13. A spring seat 14 is fixedly installed on the compression grooves 13, and a compression spring 15 is fixedly installed on the spring seat 14.

[0031] In a specific implementation, the compression grooves 13 on the two retaining rings 8 squeeze the compression spring 15, so that the compression spring 15 is compressed between the two retaining rings 8, so as to facilitate the silica gel ring 10 to fit on the outside of the rotary kiln 1 and better adapt to the jumping phenomenon of the rotary kiln 1.

[0032] In order to improve the rotational connection effect of the moving die between the upper end cover 4 and the lower end cover 3, in this embodiment, first ledges 5 are integrally extended on the inner walls of the upper end cover 4 and the lower end cover 3, and a static die ring 6 is installed on the first ledges 5.

[0033] Preferably, pre-tightening holes 7 are penetrated through both the static die ring 6 and the first ledge 5. By fixing the static die ring 6 and the first ledge 5 with bolts, the static die ring 6 can be installed inside the upper end cover 4 or the lower end cover 3, and the two static die rings 6 and the retaining rings 8 can be in contact and rotate with each other.

[0034] In this embodiment, the length of the upper end cover 4 is greater than that of the lower end cover 3, so that the lower end cover 3 can wrap and internally place the moving die and the static die ring 6.

[0035] It should be noted that bolt holes 16 are penetrated through the lower end cover 3 and the upper end cover 4, so as to facilitate the pressing and fixing of the lower end cover 3 and the upper end cover 4 with bolts.

[0036] Preferably, a sealing ring 17 is fixedly installed between the opposite side surfaces of the lower end cover 3 and the upper end cover 4 to improve the sealing performance of the mutual buckling of the lower end cover 3 and the upper end cover 4.

[0037] The working principle of the above embodiment is:

[0038] The silicone ring 10 is fastened and fixed by a clamp 11, and the silicone ring 10 restricted by the clamp 11 is placed between two pressure rings 8 to form a movable mold, and the movable mold is connected to the outside of the rotary kiln 1, the lower end cover 3 is fixed to one end of the kiln head cover 2, and the static mold ring 6 is fixed to the lower end cover 3 and the upper end cover 4 by bolts, the pressure ring 8 is fastened to both sides of the silicone ring 10, and the rotary kiln 1 is connected to the kiln head cover 2, so that the pressure ring 8 fits the static mold ring 6, the lower end cover 3 and the upper end cover 4 are fastened to each other and fixed with bolts, at this time, the rotary kiln 1 is connected to the movable mold to rotate relative to the static mold ring 6, and the sealing is achieved by the fastening of the upper end cover 4 and the lower end cover 3, and the pressure ring 8 and the silicone ring 10 in the movable mold can move with each other to adapt to the jumping of the rotary kiln 1, thereby improving the sealing effect under movement.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln inlet sealing device, comprising a rotary kiln (1) and a kiln head cover (2) connected to the kiln head of the rotary kiln (1), characterized in that: A sealing device is connected between the kiln head cover (2) and the rotary kiln (1); The sealing device comprises a lower end cover (3) fixedly mounted on the kiln head cover (2), an upper end cover (4) fixedly connected to the lower end cover (3), and a movable die set built between the lower end cover (3) and the upper end cover (4); The movable mold assembly comprises a silicone ring (10) connected to the rotary kiln (1) and a pressure ring (8) used to connect the silicone ring (10), the number of the pressure rings (8) is two, and a second edge platform (9) is integrally extended on the inner wall of the pressure ring (8), and the two pressure rings (8) are mutually buckled on the upper and lower sides of the silicone ring (10).

2. A rotary kiln inlet sealing device according to claim 1, characterized in that: The silicone ring (10) is externally sleeved with a clamp (11), the clamp (11) comprising a semicircular annular portion (111) and an extended ear (112) integrally connected to the end of the annular portion (111), and the two annular portions (111) are buckled onto the outside of the silicone ring (10).

3. A rotary kiln inlet sealing device according to claim 2, characterized in that: A circular ring-shaped portion is recessed on the outer wall of the silicone ring (10), and the clamp (11) is located on the circular ring-shaped portion outside the silicone ring (10).

4. A rotary kiln inlet sealing device according to claim 2, characterized in that: A groove (12) for the extension ear (112) to slide is provided on adjacent side surfaces of the two pressing rings (8), the extension ear (112) slides relative to the groove (12), and the length of the groove (12) is greater than that of the extension ear (112).

5. The rotary kiln inlet sealing device according to claim 1, characterized in that: A compression groove (13) is also provided on one adjacent side surface of the two pressure rings (8), a spring seat (14) is fixedly mounted on the compression groove (13), and a compression spring (15) is fixedly mounted on the spring seat (14).

6. The rotary kiln inlet sealing device according to claim 1, characterized in that: A first edge platform (5) is integrally extended on the inner walls of the upper end cover (4) and the lower end cover (3), and a static mold ring (6) is installed on the first edge platform (5).

7. A rotary kiln inlet sealing device according to claim 6, characterized in that: The static mold ring (6) and the first edge platform (5) are both provided with pre-tightening holes (7), the length of the upper end cover (4) is greater than the length of the lower end cover (3), and bolt holes (16) are installed on the lower end cover (3) and the upper end cover (4).

8. The rotary kiln inlet sealing device according to claim 1, characterized in that: A sealing ring (17) is fixedly installed between opposite sides of the lower end cover (3) and the upper end cover (4).

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