CN212868851U - 一种方形风管止回阀 - Google Patents
一种方形风管止回阀 Download PDFInfo
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- CN212868851U CN212868851U CN202021548967.0U CN202021548967U CN212868851U CN 212868851 U CN212868851 U CN 212868851U CN 202021548967 U CN202021548967 U CN 202021548967U CN 212868851 U CN212868851 U CN 212868851U
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- check valve
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- tuber pipe
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- 238000009434 installation Methods 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 239000003351 stiffener Substances 0.000 abstract description 20
- 239000000428 dust Substances 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
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Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202021548967.0U CN212868851U (zh) | 2020-07-30 | 2020-07-30 | 一种方形风管止回阀 |
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CN202021548967.0U CN212868851U (zh) | 2020-07-30 | 2020-07-30 | 一种方形风管止回阀 |
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CN212868851U true CN212868851U (zh) | 2021-04-02 |
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CN202021548967.0U Active CN212868851U (zh) | 2020-07-30 | 2020-07-30 | 一种方形风管止回阀 |
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CN (1) | CN212868851U (zh) |
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2020
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20240919 Address after: No. 302, 3rd Floor, No. 16 Tianshan North Road, Economic and Technological Development Zone, Qinhuangdao City, Hebei Province, 066000 Patentee after: Qinhuangdao Science and Technology Achievement Transformation Promotion Association Country or region after: China Address before: 300353 No.16, Huoju Road, beizhakou Town, Jinnan District, Tianjin Patentee before: TIANJIN QICHANG VALVE MANUFACTURE Co.,Ltd. Country or region before: China |