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CN-224230704-U - Sealing ring for sintering furnace

CN224230704UCN 224230704 UCN224230704 UCN 224230704UCN-224230704-U

Abstract

The utility model discloses a sealing ring for a sintering furnace, which comprises a sealing seat, wherein the lower side wall of the sealing seat is fixedly connected with a sealing ring main body, the outer side wall of the sealing ring main body is fixedly connected with a three-layer sealing sleeve, the cross section of the sealing sleeve is triangular, the sealing seat and the sealing ring main body are respectively composed of four layers of materials, and the four layers of materials are sequentially provided with a primary sealing layer, a heat-insulating sealing layer, a reinforcing sealing layer and a wear-resistant sealing layer from outside to inside. The utility model improves the sealing performance and the heat insulation effect through the multi-layer sealing structure and the heat insulation design, prolongs the service life of the sealing ring, simultaneously enhances the structural stability and the adaptability, reduces the production cost, improves the energy utilization efficiency of the sintering furnace, meets the severe requirements of the sintering process on the sealing environment, and ensures the efficient and stable operation of the sintering furnace.

Inventors

  • DING XIAODONG
  • LI SHUANGLONG
  • LIU CHENG
  • LI MENG

Assignees

  • 江苏三田密封科技有限公司

Dates

Publication Date
20260512
Application Date
20250613

Claims (8)

  1. 1. The sealing ring for the sintering furnace is characterized by comprising a sealing seat (1), wherein the lower side wall of the sealing seat (1) is fixedly connected with a sealing ring main body (2), the outer side wall of the sealing ring main body (2) is fixedly connected with a three-layer sealing sleeve (3), and the cross section of the sealing sleeve (3) is triangular; The sealing seat (1) and the sealing ring main body (2) are composed of four layers of materials, and the four layers of materials are sequentially arranged into a primary sealing layer (4), a heat insulation sealing layer (5), a reinforcing sealing layer (6) and a wear-resistant sealing layer (7) from outside to inside.
  2. 2. A sealing ring for a sintering furnace according to claim 1, characterized in that the inner diameters of the sealing seat (1) and the sealing ring body (2) are identical.
  3. 3. A sealing ring for a sintering furnace according to claim 1, characterized in that the outer side wall of the sealing ring body (2) is provided with a positioning groove (201).
  4. 4. A sealing ring for a sintering furnace according to claim 1, characterized in that the outer diameters of the sealing sleeves (3) of the three sealing sleeves (3) are arranged in sequence from large to small into an upper sealing sleeve (3), a lower sealing sleeve (3) and an intermediate sealing sleeve (3).
  5. 5. A sealing ring for a sintering furnace according to claim 1, characterized in that the primary sealing layer (4) is made of a flexible material, the material of the primary sealing layer (4) being provided as a high temperature resistant rubber.
  6. 6. A sealing ring for a sintering furnace according to claim 1, characterized in that the heat-insulating sealing layer (5) is made of a high-temperature-resistant material, and that the material of the heat-insulating sealing layer (5) is provided as glass fibers.
  7. 7. A sealing ring for a sintering furnace according to claim 1, characterized in that the reinforcing sealing layer (6) is made of a pressure-resistant material, the material of the reinforcing sealing layer (6) being provided as polytetrafluoroethylene.
  8. 8. A sealing ring for a sintering furnace according to claim 1, characterized in that the wear-resistant sealing layer (7) is made of a wear-resistant and corrosion-resistant material, the material of the wear-resistant sealing layer (7) being provided as reinforced fluororubber.

Description

Sealing ring for sintering furnace Technical Field The utility model relates to the technical field of sintering furnaces, in particular to a sealing ring for a sintering furnace. Background As a common thermal equipment, the sintering furnace is widely applied to the fields of semiconductors, new energy sources, material processing and the like, and the sealing performance of the furnace door is directly related to the temperature uniformity, the atmosphere stability and the energy utilization efficiency in the furnace, so that the quality and the production cost of the product are greatly affected. The sealing ring on the upper side of the traditional sintering furnace door mostly adopts a sealing structure made of a single material, and is commonly provided with a rubber sealing ring, an asbestos sealing ring, a metal sealing ring and the like. The rubber sealing ring can be attached to the sealing surface to a certain extent by virtue of good elasticity and flexibility to realize primary sealing, the asbestos sealing ring maintains a basic sealing form under a high-temperature working condition by virtue of the high-temperature resistance of the asbestos sealing ring, and the metal sealing ring mainly adapts to the mechanical fastening requirement of the furnace door by virtue of the strength and the rigidity of the asbestos sealing ring to maintain the stability of a sealing structure. However, these prior art techniques generally have a number of problems that need to be addressed. On the one hand, the sealing ring made of a single material is difficult to meet various performance requirements in a high-temperature environment. The rubber sealing ring is easy to age at high temperature, the elasticity and flexibility of the rubber sealing ring are obviously reduced, the sealing performance is fast degraded along with time, the asbestos sealing ring is relatively brittle and hard in material and poor in laminating property with a sealing surface, tiny gaps are easy to occur when a furnace door is frequently opened and closed or subjected to mechanical vibration, gas leakage is further caused, the heat conductivity of the metal sealing ring is poor, heat in the furnace cannot be effectively prevented from being dissipated outwards, energy waste is caused, and meanwhile, the furnace door and peripheral components are subjected to heat stress concentration due to uneven heating, so that the overall stability and the service life of equipment are influenced. On the other hand, the structural design of the existing sealing ring is simpler, and the optimized layout of multistage sealing and heat insulation is lacking. The single sealing layer is difficult to form an effective labyrinth sealing path, high-temperature gas can easily leak along a straight path, and the severe requirements of a sintering process on the sealing environment in the furnace are difficult to meet. Disclosure of utility model The utility model aims to provide a sealing ring for a sintering furnace, which can overcome the defects of the existing sealing ring. In order to achieve the above purpose, the sealing ring for the sintering furnace comprises a sealing seat, wherein the lower side wall of the sealing seat is fixedly connected with a sealing ring main body, the outer side wall of the sealing ring main body is fixedly connected with a three-layer sealing sleeve, and the cross section of the sealing sleeve is triangular; the sealing seat and the sealing ring main body are composed of four layers of materials, and the four layers of materials are sequentially arranged into a primary sealing layer, a heat-insulating sealing layer, a reinforcing sealing layer and a wear-resistant sealing layer from outside to inside. According to the sealing ring for the sintering furnace, the inner diameters of the sealing seat and the sealing ring main body are the same, so that the inner side walls of the sealing seat and the sealing ring main body are smooth curved surfaces. According to the sealing ring for the sintering furnace, the outer side wall of the sealing ring main body is provided with the positioning groove, so that the sealing ring main body can be positioned conveniently. According to the sealing ring for the sintering furnace, the outer diameters of the sealing sleeves in the three sealing sleeves are sequentially arranged into the upper sealing sleeve, the lower sealing sleeve and the middle sealing sleeve from large to small, so that a tortuous sealing cavity is formed, and a medium needs to be subjected to multiple turning and compression when passing through, so that the possibility of leakage is greatly reduced. According to the sealing ring for the sintering furnace, the primary sealing layer is made of flexible materials, and the primary sealing layer is made of high-temperature-resistant rubber to form a basic sealing barrier. According to the sealing ring for the sintering furnace, the heat-insulating sealing layer is made