A rotary roller furnace port sealing and wear-free structure for a heat treatment furnace

Abstract

The application relates to a rotary roller furnace mouth sealing and wear-free structure for a heat treatment furnace, characterized by comprising a furnace mouth frame and a rotary roller, the two ends of the rotary roller are movably connected with the furnace mouth frame through bearings to form a rotary structure, a rotary elastic sealing ring is arranged at the connection position of the end faces of the two ends of the rotary roller and the furnace mouth frame, a concave ring is arranged at the inner side wall of the two ends of the rotary roller close to the furnace mouth frame, and the rotary elastic sealing ring is arranged in the concave ring; the rotary elastic sealing ring is provided with an elastic structure layer and a rotary self-lubricating wear-resistant structure layer, the elastic structure layer is tightly attached to the end face of the rotary roller, one side of the rotary self-lubricating wear-resistant structure layer is tightly attached to the elastic structure layer, and the other side is tightly attached to the inner wall of the furnace mouth frame; the rotary self-lubricating wear-resistant structure layer is provided with a rotary structure, the part of the rotary structure in contact with the inner wall of the furnace mouth frame is relatively static, and the part of the rotary structure in contact with the elastic structure layer can rotate relative to the part in contact with the inner wall of the furnace mouth frame. The rotary roller furnace mouth sealing and wear-free structure has the characteristics of simple structure, good sealing performance and wear-free.

Description

[0001] The present application relates to a rotary roller type furnace opening sealing and wear-free structure for a heat treatment furnace, particularly suitable for the rotary roller type sealing of the furnace opening of a continuous strip bright annealing furnace, and is a sealing structure of a continuous strip bright annealing production line. It belongs to the technical field of metallurgical equipment. BACKGROUND

[0002] In the prior art, in order to ensure the sealing of the furnace opening during the operation of the production line, three sealing structures, i.e. a press plate type sealing, a press roller type sealing or a rotary roller type sealing, are generally provided at the furnace opening of the heat treatment production line equipment (particularly the equipment of the continuous strip bright annealing production line) to avoid the entry of air into the interior of the furnace. In the press plate type sealing or the press roller type sealing structure, a layer of soft felt is required to be provided on the contact surface of the workpiece. Since sliding friction occurs between the workpiece and the soft felt, the following problems exist: (1) scratches are easily caused on the workpiece; (2) the soft felt is easily deformed during the rotation of the rotary roller, causing a gap between the end surface of the sealing roller and the two side arches and air leakage; and (3) the end surface of the sealing roller is easily worn.

[0003] After searching the Chinese patent announcements, no rotary roller type sealing structure for the end surface of the sealing roller of the furnace opening has been found. Although some technical solutions of sealing structures with end surface sealing have been disclosed in the Chinese patent announcements, for example, the inventions with the application numbers 2022107217201 and 202210442780X, although the inventions can solve the problem of end surface sealing and have the technical effect of improving the sealing, they cannot solve the problems of the existing technology, such as scratches on the material, large air leakage, easy wear of the end surface of the sealing roller, etc. The present application ensures that the wear-resistant pieces of the end surface of the roller are always in close contact with each other through the extrusion of the elastic gasket, and therefore has the characteristics of simple and reasonable structure, good sealing, etc. SUMMARY

[0004] The purpose of the present application is to solve the problems of the existing technology, such as scratches on the material, large air leakage, easy wear of the end surface of the sealing roller, etc., and to provide a rotary roller type furnace opening sealing and wear-free structure for a heat treatment furnace, which has the outstanding and substantial characteristics of simple structure, good sealing and wear-free, and significant technical progress.

[0005] The purpose of the present application can be achieved by adopting the following technical solutions:

[0006] The application discloses a rotary roller type furnace mouth sealing and wear-free structure for a heat treatment furnace.

[0007] The application also achieves the above-mentioned purpose by adopting the following technical scheme.

[0008] Further, the elastic structure layer of the rotary elastic sealing ring is composed of elastic gaskets, and the rotary self-lubricating wear-resistant structure layer of the rotary elastic sealing ring is composed of static wear-resistant sheets and dynamic wear-resistant sheets, so that the rotary elastic sealing ring has a three-layer structure, specifically, the bottom layer is composed of static wear-resistant sheets and is connected to the inner side surface of the furnace mouth frame, the middle layer is composed of dynamic wear-resistant sheets and is connected to the static wear-resistant sheets to form a relative rotation structure, and the surface layer is composed of elastic gaskets, the bottom surface of the elastic gaskets is connected to the dynamic wear-resistant sheets, and the surface of the elastic gaskets is connected to the end surface of the rotary roller, so as to form an elastic connection structure; the elastic gaskets drive the dynamic wear-resistant sheets and the static wear-resistant sheets to be closely attached and the static wear-resistant sheets to be closely attached to the furnace mouth frame by the elastic force of the elastic gaskets, the static wear-resistant sheets and the dynamic wear-resistant sheets are made of self-lubricating wear-resistant materials, the dynamic wear-resistant sheets rotate relative to the static wear-resistant sheets, and the static wear-resistant sheets are in a static state relative to the furnace mouth frame, so as to form a wear-free structure of the end surface of the sealing roller.

[0009] Further, the joint of the static wear-resistant sheets and the dynamic wear-resistant sheets has a concave-convex matching surface, specifically, an R-arc convex is arranged at the center position of the static wear-resistant sheet, an R-arc concave is arranged at the center position of the dynamic wear-resistant sheet, and the R-arc convex and the R-arc concave are matched to form a relative rotation sealing surface; or an R-arc convex is arranged at the center position of the dynamic wear-resistant sheet, an R-arc concave is arranged at the center position of the static wear-resistant sheet, and the R-arc convex and the R-arc concave are matched to form a relative rotation sealing surface.

[0010] Further, the elastic gasket extrudes the dynamic wear-resistant sheet and the static wear-resistant sheet by its elasticity, so that the dynamic wear-resistant sheet and the static wear-resistant sheet are kept in close contact with each other and with the furnace mouth frame.

[0011] Further, the static wear-resistant sheet and the dynamic wear-resistant sheet are made of self-lubricating wear-resistant material, and have a very small friction coefficient, and the static wear-resistant sheet and the dynamic wear-resistant sheet rotate relative to each other, while the static wear-resistant sheet is in a static state relative to the furnace mouth frame, thereby forming a wear-resistant structure of the end surface of the sealing roller.

[0012] The present application has the following outstanding substantive effects and significant technical progress:

[0013] 1. The two ends of the rotating roller are movably connected to the furnace mouth frame through bearings to form a rotating structure, thereby forming a rotating roller type furnace mouth sealing structure; a rotating elastic sealing ring is arranged at the connection between the end surface of the two ends of the rotating roller and the furnace mouth frame, the rotating elastic sealing ring has an elastic structure layer and a rotating self-lubricating wear-resistant structure layer, the elastic structure layer is in close contact with the end surface of the rotating roller, one side of the rotating self-lubricating wear-resistant structure layer is in close contact with the elastic structure layer, and the other side is in close contact with the inner wall of the furnace mouth frame; the rotating self-lubricating wear-resistant structure layer has a rotating structure, the part of the rotating self-lubricating wear-resistant structure layer that is in contact with the inner wall of the furnace mouth frame is relatively static, and the part of the rotating self-lubricating wear-resistant structure layer that is in contact with the elastic structure layer can rotate relative to the part of the rotating self-lubricating wear-resistant structure layer that is in contact with the inner wall of the furnace mouth frame, thereby forming a rotating roller type furnace mouth sealing and wear-resistant structure. Therefore, the problems of scratches on the material, large air leakage, and easy wear of the end surface of the sealing roller in the prior art can be solved, and the present application has the outstanding substantive characteristics and significant technical progress of simple structure, good sealing performance, and wear resistance.

[0014] 2. The elastic structure layer of the rotating elastic sealing ring is composed of an elastic gasket, the rotating self-lubricating wear-resistant structure layer of the rotating elastic sealing ring is composed of a static wear-resistant sheet and a dynamic wear-resistant sheet, the rotating elastic sealing ring has a three-layer structure, specifically, the bottom layer is composed of the static wear-resistant sheet and is connected to the inner side of the furnace mouth frame, the middle layer is composed of the dynamic wear-resistant sheet and is connected to the static wear-resistant sheet to form a relative rotating structure, and the surface layer is composed of the elastic gasket, the bottom surface of the elastic gasket is connected to the dynamic wear-resistant sheet, and the surface of the elastic gasket is connected to the end surface of the rotating roller to form an elastic connection structure; the elastic gasket drives the dynamic wear-resistant sheet and the static wear-resistant sheet to be in close contact and the static wear-resistant sheet and the furnace mouth frame to be in close contact by the elasticity of the elastic gasket, the static wear-resistant sheet and the dynamic wear-resistant sheet are made of self-lubricating wear-resistant material, the dynamic wear-resistant sheet rotates relative to the static wear-resistant sheet, and the static wear-resistant sheet is in a static state relative to the furnace mouth frame, thereby forming a wear-resistant structure of the end surface of the sealing roller. Therefore, the present application has the outstanding substantive characteristics and significant technical progress of simple structure, good sealing performance, and wear resistance.

[0015] 3, the static wear-resistant piece and the joint of the dynamic wear-resistant piece have a concave-convex matching surface, specifically, an R-arc convex is arranged at the center position of the static wear-resistant piece, and an R-arc concave is arranged at the center position of the dynamic wear-resistant piece in correspondence with the R-arc convex, and the R-arc convex and the R-arc concave are matched to form a sealing surface for relative rotation; or an R-arc convex is arranged at the center position of the dynamic wear-resistant piece, and an R-arc concave is arranged at the center position of the static wear-resistant piece in correspondence with the R-arc convex, and the R-arc convex and the R-arc concave are matched to form a sealing surface for relative rotation. Therefore, it has the outstanding substantial features and significant technical progress of simple structure, good sealing performance, wear-free and the like. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of a specific embodiment of the present application. DETAILED DESCRIPTION Specific embodiment 1:

[0018] Referring to Figure 1 , including the furnace mouth palace 1 and the rotating roller 5, the two ends of the rotating roller 5 are movably connected with the furnace mouth palace 1 through bearings 6 to form a rotating structure, constituting a rotating roller type furnace mouth sealing structure; a rotating elastic sealing ring is arranged at the connection between the end face of the two ends of the rotating roller 5 and the furnace mouth palace 1, a concave ring 5-1 is arranged at the inner side wall of the two ends of the rotating roller 5 close to the furnace mouth palace 1, and the rotating elastic sealing ring is arranged in the concave ring 5-1, forming a rotating annular elastic sealing structure for the inner side wall of the furnace mouth palace 1; the rotating elastic sealing ring has an elastic structure layer and a rotating self-lubricating wear-resistant structure layer, the elastic structure layer is closely attached to the end face of the rotating roller 5, one side of the rotating self-lubricating wear-resistant structure layer is closely attached to the elastic structure layer, and the other side is closely attached to the inner wall of the furnace mouth palace 1; the rotating self-lubricating wear-resistant structure layer has a rotating structure, the part connected with the inner wall of the furnace mouth palace 1 is relatively stationary, and the part connected with the elastic structure layer can rotate relative to the part connected with the inner wall of the furnace mouth palace 1, constituting a rotating roller type furnace mouth sealing and wear-free structure.

[0019] In this embodiment:

[0020] The elastic structure layer of the rotating elastic sealing ring is composed of the elastic gasket 4, and the rotating self-lubricating wear-resistant structure layer of the rotating elastic sealing ring is composed of the static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3, so that the rotating elastic sealing ring has a three-layer structure, specifically: the bottom layer is composed of the static wear-resistant sheet 2 and is connected to the inner side of the furnace mouth arch 1, the middle layer is composed of the dynamic wear-resistant sheet 3, and the bottom surface of the dynamic wear-resistant sheet 3 is connected to the static wear-resistant sheet 2 to form a relative rotation structure; the surface layer is composed of the elastic gasket 4, the bottom surface of the elastic gasket 4 is connected to the dynamic wear-resistant sheet 3, and the surface is connected to the end surface of the rotating roller 5 to form an elastic connection structure; the dynamic wear-resistant sheet 3 is tightly connected to the static wear-resistant sheet 2 and the static wear-resistant sheet 2 is tightly connected to the furnace mouth arch 1 through the elastic force of the elastic gasket 4, the static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 are made of self-lubricating wear-resistant materials, the dynamic wear-resistant sheet 3 rotates relative to the static wear-resistant sheet 2, and the static wear-resistant sheet 2 is in a static state relative to the furnace mouth arch 1, thereby forming a wear-resistant structure of the sealing roller end surface.

[0021] The joint of the static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 has a concave-convex matching surface, specifically: an R-arc convex 2-1 is arranged at the center of the static wear-resistant sheet 2, and an R-arc concave 3-1 is arranged at the center of the dynamic wear-resistant sheet 3, and the R-arc convex 2-1 and the R-arc concave 3-1 are matched to form a relative rotation sealing surface.

[0022] The elastic gasket 4 extrudes the dynamic wear-resistant sheet 3 and the static wear-resistant sheet 2 through its own elastic force, so that the dynamic wear-resistant sheet 3 and the static wear-resistant sheet 2 and the static wear-resistant sheet 2 and the furnace mouth arch 1 are kept in a state of close connection.

[0023] The static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 are made of self-lubricating wear-resistant materials, and have a very small friction coefficient, and they rotate relative to each other, while the static wear-resistant sheet 2 is in a static state relative to the furnace mouth arch 1, so that the sealing roller end surface is not worn.

[0024] A concave ring 5-1 is arranged at the two ends of the rotating roller 5 close to the inner side wall of the furnace mouth arch 1, and the rotating elastic sealing ring is arranged in the concave ring 5-1 to form a rotating annular elastic sealing structure of the inner side wall of the furnace mouth arch 1. Specifically: the static wear-resistant sheet 2 is tightly connected to the inner side wall of the furnace mouth arch 1, the elastic gasket 4 is tightly connected to the end surface of the rotating roller 5, and the dynamic wear-resistant sheet 3 is arranged between the static wear-resistant sheet 2 and the elastic gasket 4. The static wear-resistant sheet 2 is static relative to the inner side wall of the furnace mouth arch 1, and the dynamic wear-resistant sheet 3 rotates with the rotating roller 5 and rotates relative to the static wear-resistant sheet 2.

[0025] The static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 are made of conventional metal or non-metal materials and have a conventional self-lubricating structure.

[0026] Static wear-resistant sheet 2, dynamic wear-resistant sheet 3, elastic gasket 4 are disc-shaped, and rotating roller 5 is bar-shaped, without bolt installation, and the structure of the sealing roller is simple.

[0027] In the embodiment, the elastic gasket extrusion ensures that the wear-resistant sheets on the end surface of the rotating roller 5 are always attached together, and the sealing performance is good. The static wear-resistant sheet 2 between the furnace mouth frame 1 and the static wear-resistant sheet 2 is in a static state, and the static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 are made of self-lubricating wear-resistant materials, and the friction coefficient is extremely low, so that the end surface of the sealing roller is wear-free.

[0028] In actual application, the furnace mouth frame 1 is arranged at the furnace mouth of the heat treatment furnace, and the rotating roller 5 is arranged between the two furnace mouth frames 1 at the furnace mouth of the heat treatment furnace, that is, the roller 5 is fixed in the middle of the furnace mouth frame 1 by two end bearings, the elastic gasket 4, the dynamic wear-resistant sheet 3 and the static wear-resistant sheet 2 are sequentially sleeved on the two ends of the roller 5, the elastic gasket 4 makes the dynamic wear-resistant sheet 3 and the static wear-resistant sheet 2 closely attached through its elasticity, the static wear-resistant sheet 2 is closely attached to the furnace mouth frame 1, the end surface of the sealing roller is well sealed, the static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 are made of self-lubricating wear-resistant materials, the static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 adopt relative rotation, the static wear-resistant sheet 2 between the furnace mouth frame 1 is in a static state, and the end surface of the sealing roller is wear-free. The static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 adopt concave-convex matching surfaces, which better seal the two relative rotating sealing surfaces. The elastic gasket 4 extrudes the dynamic wear-resistant sheet 3 and the static wear-resistant sheet 2 through its elastic force, so that the dynamic wear-resistant sheet 3 and the static wear-resistant sheet 2 and the static wear-resistant sheet 2 and the furnace mouth frame 1 are permanently attached. The static wear-resistant sheet 2 and the dynamic wear-resistant sheet 3 are made of self-lubricating wear-resistant materials, and the friction coefficient is very small, and the two are in relative rotation, while the static wear-resistant sheet 2 and the furnace mouth frame 1 are in a static state, so that the end surface of the sealing roller is wear-free.

[0029] The embodiment is suitable for sealing the furnace mouth in the heat treatment of a metal heat treatment furnace, a non-metal heat treatment furnace and especially a continuous strip bright annealing production line.

[0030] The embodiment has the characteristics of simple structure, good sealing performance of the end surface of the sealing roller and wear-free end surface of the sealing roller. Specific embodiment 2:

[0032] The embodiment has the characteristics that an R-arc convex is arranged at the center of the dynamic wear-resistant sheet 3, and an R-arc concave is arranged at the center of the static wear-resistant sheet 2, and the R-arc convex and the R-arc concave are matched to form a relative rotating sealing surface. The rest is the same as specific embodiment 1.

Claims

1. A roller furnace door seal and wear free construction for a heat treatment furnace characterized by: The furnace mouth frame (1) and the rotating roller (5) are movably connected through bearings (6) at both ends of the rotating roller (5) to form a rotating structure, which constitutes a rotating roller type furnace mouth sealing structure; a rotating elastic sealing ring is arranged at the connection between the end face of the rotating roller (5) and the furnace mouth frame (1), and a concave ring (5-1) is arranged at the inner side wall of the rotating roller (5) close to the furnace mouth frame (1), the rotating elastic sealing ring is arranged in the concave ring (5-1), and a rotating annular elastic sealing structure for the inner side wall of the furnace mouth frame (1) is formed; the rotating elastic sealing ring has an elastic structure layer and a rotating self-lubricating wear-resistant structure layer, the elastic structure layer is closely attached to the end face of the rotating roller (5), one side of the rotating self-lubricating wear-resistant structure layer is closely attached to the elastic structure layer, and the other side is closely attached to the inner wall of the furnace mouth frame (1); the rotating self-lubricating wear-resistant structure layer has a rotating structure, the part in contact with the inner wall of the furnace mouth frame (1) is relatively stationary, and the part in contact with the elastic structure layer can rotate relative to the part in contact with the inner wall of the furnace mouth frame (1), thereby constituting a rotating roller type furnace mouth sealing and wear-free structure; the elastic structure layer of the rotating elastic sealing ring is composed of an elastic gasket (4), the rotating self-lubricating wear-resistant structure layer of the rotating elastic sealing ring is composed of a static wear-resistant sheet (2) and a dynamic wear-resistant sheet (3), and the rotating elastic sealing ring has a three-layer structure, specifically: the bottom layer is composed of the static wear-resistant sheet (2) and is connected to the inner side of the furnace mouth frame (1), the middle layer is composed of the dynamic wear-resistant sheet (3), the bottom surface of the dynamic wear-resistant sheet (3) is attached to the static wear-resistant sheet (2) to form a relative rotating structure, and the surface layer is composed of the elastic gasket (4), the bottom surface of the elastic gasket (4) is connected to the dynamic wear-resistant sheet (3), the surface is connected to the end face of the rotating roller (5), and an elastic connection structure is formed; the elastic gasket (4) drives the dynamic wear-resistant sheet (3) and the static wear-resistant sheet (2) to be closely attached and the static wear-resistant sheet (2) and the furnace mouth frame (1) to be closely attached through the elastic force of the elastic gasket (4), the static wear-resistant sheet (2) and the dynamic wear-resistant sheet (3) are made of a self-lubricating wear-resistant material, the dynamic wear-resistant sheet (3) rotates relative to the static wear-resistant sheet (2), and the static wear-resistant sheet (2) is in a stationary state relative to the furnace mouth frame (1), thereby constituting a sealing roller end face wear-free structure; the joint of the static wear-resistant sheet (2) and the dynamic wear-resistant sheet (3) has a concave-convex matching surface, specifically: an R-arc convex (2-1) is arranged at the center of the static wear-resistant sheet (2), an R-arc concave (3-1) is arranged at the center of the dynamic wear-resistant sheet (3) in correspondence, and the R-arc convex (2-1) and the R-arc concave (3-1) form a relatively rotating sealing surface through pairing.

2. A roller seal and wear free construction for a furnace opening of a furnace for heat treatment according to claim 1, characterized in that The elastic gasket (4) extrudes the dynamic wear-resistant sheet (3) and the static wear-resistant sheet (2) through its own elastic force, so that the dynamic wear-resistant sheet (3) and the static wear-resistant sheet (2) are kept in an attached state.

3. A rotating roller type furnace opening sealing and wear-free structure for a heat treatment furnace according to claim 1, characterized in that: The static wear-resistant piece (2) and the dynamic wear-resistant piece (3) are made of self-lubricating wear-resistant material, and the friction coefficient is very small, and the relative rotation is formed between the two, and the static wear-resistant piece (2) and the furnace mouth arch (1) are in a static state, and the end face of the sealing roller is formed into a wear-resistant structure.

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