Continuous heating furnace
The continuous heating furnace addresses air leakage issues by using a sealing structure with a ring-shaped member and pressing member to seal the outer ring of the bearing, ensuring effective gas containment for precise atmospheric control.
JP7895019B1Active Publication Date: 2026-07-24NORITAKE MACHINE TECHNO CO LTD
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NORITAKE MACHINE TECHNO CO LTD
- Filing Date
- 2026-03-19
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
Conventional roller hearth kilns face issues with air leakage through the gap between the outer ring of the second bearing and the second wall portion, allowing atmospheric gas to escape and outside air to enter the furnace.
Method used
A continuous heating furnace design featuring a tunnel-shaped structure with inner and outer support parts that include a first bearing housing, a ring-shaped sealing member, and a pressing member to seal the outer ring of the bearing, along with a cover member and oil seal to prevent gas leakage.
Benefits of technology
The design effectively seals the gaps around the bearings, preventing atmospheric gas outflow and outside air intrusion, suitable for high-precision applications requiring strict atmospheric control.
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Smart Images
Figure 0007895019000001_ABST
Abstract
The present invention provides a continuous heating furnace that can suppress the outflow of atmospheric gas from the outer circumference of the bearing's outer ring and prevent outside air from entering the furnace from the outer circumference of the outer ring. [Solution] The continuous heating furnace (1) comprises a furnace body (11), a conveying roller (12), a shaft (61, 71), and an inner support portion (41). The inner support portion (41) includes a through hole (43), a first bearing housing portion (45) for housing a first bearing (42), a ring-shaped sealing member (46) that contacts the outer ring (42A) of the first bearing (42), and a pressing member (47) that presses the outer ring (42A) axially inward and fixes it against the sealing member (46).
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