JPS6446570A - Sluice valve gear for vacuum heating furnace - Google Patents
Sluice valve gear for vacuum heating furnaceInfo
- Publication number
- JPS6446570A JPS6446570A JP20312787A JP20312787A JPS6446570A JP S6446570 A JPS6446570 A JP S6446570A JP 20312787 A JP20312787 A JP 20312787A JP 20312787 A JP20312787 A JP 20312787A JP S6446570 A JPS6446570 A JP S6446570A
- Authority
- JP
- Japan
- Prior art keywords
- work
- sluice valve
- shutter
- vacuum
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Tunnel Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
PURPOSE: To prolong the service life of a sluice valve device and, at the same time, to improve the degree of the vacuum in a vacuum chamber by providing a sluice valve on a first shaft which is attached in parallel to the work passage of the vacuum chamber at an interval from the passage and rotatably providing a heat insulating shutter on a second shaft. CONSTITUTION: A work 4 is carried in a vacuum chamber 1 through a passing port 5. When the work 4 is carried in the chamber 1, the heat insulating shutter 15 of a second shaft 12 blocks the passage of the work 4 and the sluice valve 10 of a first shaft 11 closes a passing port 6. During the heating of the work 4, the soaking property of the work 4 is improved, because the shutter 15 prevents radiation of the heat. When the heat treatment on the work 4 is completed, the sluice valve 10 is opened and the shutter 15 rotates to the position at which the shutter 15 protects the front face of the valve 10 and protects the packing of the valve 10 from heat. Since a rotary vacuum seal is adopted, in addition, no gas enrolling nor oil evaporation occurs. Therefore, the degree of the vacuum in the vacuum chamber 1 is improved and the service life of a sluice valve device is prolonged.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20312787A JP2601282B2 (en) | 1987-08-17 | 1987-08-17 | Gate valve device for vacuum heating furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20312787A JP2601282B2 (en) | 1987-08-17 | 1987-08-17 | Gate valve device for vacuum heating furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6446570A true JPS6446570A (en) | 1989-02-21 |
JP2601282B2 JP2601282B2 (en) | 1997-04-16 |
Family
ID=16468852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20312787A Expired - Lifetime JP2601282B2 (en) | 1987-08-17 | 1987-08-17 | Gate valve device for vacuum heating furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2601282B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9908058B2 (en) | 2009-09-25 | 2018-03-06 | Innovation First, Inc. | Vibration powered toy |
CN117722851A (en) * | 2024-02-07 | 2024-03-19 | 沈阳恒进真空科技有限公司 | Multi-chamber vacuum sintering furnace and continuous sintering system |
-
1987
- 1987-08-17 JP JP20312787A patent/JP2601282B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9908058B2 (en) | 2009-09-25 | 2018-03-06 | Innovation First, Inc. | Vibration powered toy |
US10265633B2 (en) | 2009-09-25 | 2019-04-23 | Innovation First, Inc. | Vibration powered toy |
US10688403B2 (en) | 2009-09-25 | 2020-06-23 | Innovation First, Inc. | Vibration powered toy |
CN117722851A (en) * | 2024-02-07 | 2024-03-19 | 沈阳恒进真空科技有限公司 | Multi-chamber vacuum sintering furnace and continuous sintering system |
Also Published As
Publication number | Publication date |
---|---|
JP2601282B2 (en) | 1997-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080129 Year of fee payment: 11 |