JPS5499235A - Damper - Google Patents

Damper

Info

Publication number
JPS5499235A
JPS5499235A JP520578A JP520578A JPS5499235A JP S5499235 A JPS5499235 A JP S5499235A JP 520578 A JP520578 A JP 520578A JP 520578 A JP520578 A JP 520578A JP S5499235 A JPS5499235 A JP S5499235A
Authority
JP
Japan
Prior art keywords
blade
hand thread
boss
cut
screw part
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.)
Pending
Application number
JP520578A
Other languages
Japanese (ja)
Inventor
Masamichi Mishima
Shinji Hase
Naoyuki Egashira
Makoto Tsumori
Susumu Nakagaito
Tadashi Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Babcock Hitachi KK filed Critical Babcock Hitachi KK
Priority to JP520578A priority Critical patent/JPS5499235A/en
Publication of JPS5499235A publication Critical patent/JPS5499235A/en
Pending legal-status Critical Current

Links

Landscapes

  • Air Supply (AREA)

Abstract

PURPOSE: To prevent the leak of gas and permit certain operation by connecting four rectangular plates having same dimensions turnably on the equal length side and forming a four-side pillar-shaped body, and operating two connection parts opposed from outside a duct, permitting deformation.
CONSTITUTION: The blade 12 of a damper consists of four blade-constituting plates 12A, 12B, 12C and 12D. 12A and 12D, and 12B and 12C are connected with hinges 13, and 12A and 12B, and 12C and 12D are connected with connecting arms 14 and 15. Each connecting arm 14, 15 is connected with a boss 16 with right-hand thread, a boss 17 wth left-hand thead, and these bosses 16 and 17 are screwed with the screw part of a driving shaft 18. On side screw part, left-hand thread is cut on the left side to the center, and right-hand thread is cut on the right side. Thus, in perfect closing of the blade 12, sealing air is introduced to the space between constituting plates through a sealing air pipe 21, and the degree of sealing is increased, and certain operation is enabled.
COPYRIGHT: (C)1979,JPO&Japio
JP520578A 1978-01-23 1978-01-23 Damper Pending JPS5499235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP520578A JPS5499235A (en) 1978-01-23 1978-01-23 Damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP520578A JPS5499235A (en) 1978-01-23 1978-01-23 Damper

Publications (1)

Publication Number Publication Date
JPS5499235A true JPS5499235A (en) 1979-08-04

Family

ID=11604683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP520578A Pending JPS5499235A (en) 1978-01-23 1978-01-23 Damper

Country Status (1)

Country Link
JP (1) JPS5499235A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297440A (en) * 2011-07-15 2011-12-28 江苏南自通华电站辅机有限公司 Desulfurizing air door for utilizing waste heat in positive and negative pressure flue
CN110195858A (en) * 2019-05-29 2019-09-03 华侨大学 Recirculating fluidized bed absorption tower flue
CN111336539A (en) * 2020-04-27 2020-06-26 浙江鄞发节能科技有限公司 Board-inserting type smoke isolating door

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297440A (en) * 2011-07-15 2011-12-28 江苏南自通华电站辅机有限公司 Desulfurizing air door for utilizing waste heat in positive and negative pressure flue
CN110195858A (en) * 2019-05-29 2019-09-03 华侨大学 Recirculating fluidized bed absorption tower flue
CN111336539A (en) * 2020-04-27 2020-06-26 浙江鄞发节能科技有限公司 Board-inserting type smoke isolating door

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