CN109340424A - A kind of low pressure electromagnetic shielding safety valve - Google Patents
A kind of low pressure electromagnetic shielding safety valve Download PDFInfo
- Publication number
- CN109340424A CN109340424A CN201811397752.0A CN201811397752A CN109340424A CN 109340424 A CN109340424 A CN 109340424A CN 201811397752 A CN201811397752 A CN 201811397752A CN 109340424 A CN109340424 A CN 109340424A
- Authority
- CN
- China
- Prior art keywords
- safety valve
- low pressure
- waveguide
- pedestal
- magnetic stripe
- 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
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 3
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 238000005336 cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0236—Diaphragm cut-off apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
- F16K31/0658—Armature and valve member being one single element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0672—One-way valve the valve member being a diaphragm
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of low pressures to be electromagnetically shielded safety valve, including waveguide pedestal, airtight diaphragm, upper tabletting, magnet, connecting shaft, rubber magnetic stripe and mounting flange；From top to bottom successively upper tabletting, airtight diaphragm and waveguide pedestal are connected by connecting shaft；The rubber magnetic stripe is fixed in the groove of waveguide pedestal upper surface, and magnet is fixed on the lower surface of tabletting, is cooperated with rubber magnetic stripe, realizes the opening and closing between waveguide pedestal and airtight diaphragm；Mounting flange with front-end product for connecting.Intrinsic safety full valve, as electromagnetic shielding material, can reach corresponding electromagnetic shielding demand after waveguide pedestal is fixed with aerated product, so that safety valve increases electro-magnetic screen function, can be used for the super pressure control and electromagnetic radiation protection of electromagnetic shield using waveguide material.
Description
Technical field
The present invention relates to valving and safety protection field, specially a kind of low pressure is electromagnetically shielded safety valve.
Background technique
Now, superpressure exhaust valve is widely used in inflated article, safety protection field, when system pressure is more than specified value
When, it opens the safety-valve and excludes additional air, guarantee the safety of system.The basic principle is that passing through valve inner gas overpressure and bullet
Spring controls the opening and closing of valve block.Currently, common safety valve structure has lever and spring.Lever safety valve is according to thick stick
The gravitational moment of weight is applied to the internal force on flap come balanced action on flap by lever and valve rod by rod principle, it
The adjustment of cracking pressure is the position (or the weight for changing weight) by mobile weight come what is carried out.Spring loaded safety valve is benefit
Internal force with the elastic force of compressed spring come balanced action on flap, and by the decrement of adjustment spring come regulation safety valve
Cracking pressure.But lever is than cumbersome, sensitive to dynamic respons, installation site is more demanding；Spring is quick on the draw,
But since the pressure of spring itself acts on, so that the pressure that it can control is generally at KPa grades or more, for smaller pressure environment
It cannot then be applicable in.
Application No. is 201420715183.0 documents to disclose a kind of low pressure magnetic control safety valve, using rubber magnetic stripe with it is soft
Property membrane material as main material, cracking pressure is 150Pa~500Pa, but flexible material is easily-deformable after folding, and is chronically at out
State is opened also to be easily deformed.
Do not have electromagnet shield effect under country's exhaust valve opening state at present, makes in the environment of needing and being electromagnetically shielded
With the installation and use of safety valve all have electromagnetic exposure.
Summary of the invention
In view of the deficiencies of the prior art, the technical issues of present invention intends to solve is to provide a kind of low pressure electromagnetic shielding peace
Full valve.
The technical solution that the present invention solves the technical problem is to provide a kind of low pressure electromagnetic shielding safety valve, special
Sign is that the safety valve includes waveguide pedestal, airtight diaphragm, upper tabletting, magnet, connecting shaft, rubber magnetic stripe and mounting flange；
From top to bottom successively upper tabletting, airtight diaphragm and waveguide pedestal are connected by connecting shaft；The rubber magnet
Item is fixed in the groove of waveguide pedestal upper surface, and magnet is fixed on the lower surface of tabletting, is cooperated with rubber magnetic stripe,
Realize the opening and closing between waveguide pedestal and airtight diaphragm；Mounting flange with front-end product for connecting.
Compared with prior art, the beneficial effects of the invention are that:
(1) intrinsic safety full valve uses waveguide material as electromagnetic shielding material, after waveguide pedestal is fixed with aerated product
Reach corresponding electromagnetic shielding demand, so that safety valve increases electro-magnetic screen function, can be used for the superpressure control of electromagnetic shield
System and electromagnetic radiation protection.
(2) operating pressure of intrinsic safety full valve is determined by the magnetic force between magnet and rubber magnetic stripe, therefore can pass through adjusting
Magnetic force size determines the cracking pressure and capacity of safety valve, to be suitable for the environment under low pressure of 150Pa or more.
(3) tabletting uses rectangular-ambulatory-plane engraved structure on, mitigates weight.
(4) intrinsic safety full valve can satisfy under 100KHz~20MHz wave band shield effectiveness and be greater than 30dB；20MHz~40GHz wave
The lower shield effectiveness of section is greater than 60dB, while being suitable for the environment under low pressure of 150Pa or more, meets the stable gas pressure need when environment
It asks.
(5) safety valve arrangement is simple, stablizes, and is unlikely to deform, and flow is big, its front-end product can be made to be maintained at relatively steady
Fixed uses air pressure and electromagnet shield effect, achievees the purpose that safety valve pressure maintaining overflow.
Detailed description of the invention
Fig. 1 is the overall structure axonometric schematic diagram of an embodiment of the present invention；
Fig. 2 is the overall structure schematic front view of an embodiment of the present invention；(in figure: 1. waveguide pedestals；2. airtight film
Piece；Tabletting on 3.；4. magnet；5. connecting shaft；6. rubber magnetic stripe；7. mounting flange)
Specific embodiment
Specific embodiments of the present invention are given below.Specific embodiment is only used for that present invention be described in more detail, unlimited
The protection scope of the claim of this application processed.
The present invention provides a kind of low pressures to be electromagnetically shielded safety valve (abbreviation safety valve, referring to Fig. 1-2), it is characterised in that
The safety valve includes waveguide pedestal 1, airtight diaphragm 2, upper tabletting 3, magnet 4, connecting shaft 5, rubber magnetic stripe 6 and mounting flange 7；
From top to bottom successively upper tabletting 3, airtight diaphragm 2 and waveguide pedestal 1 are connected by connecting shaft 5, connecting shaft 5
It passes through between two parties, airtight diaphragm 2 is between waveguide pedestal 1 and upper tabletting 3；The rubber magnetic stripe 6 is fixed on table on waveguide pedestal 1
In the groove in face, magnet 4 is fixed on the lower surface of tabletting 3, is cooperated with rubber magnetic stripe 6, realizes waveguide pedestal 1 and gas
Opening and closing between close diaphragm 2；Mounting flange 7 with front-end product for connecting, in use, waveguide pedestal 1, front-end product and fixation
Flange 7 is bolted to connection, and front-end product is between waveguide pedestal 1 and mounting flange 7.
The 1 thickness 6.35mm of waveguide pedestal, diameter 20cm, main body aperture 1.6mm, material are 304 stainless steels or chromium plating
Stainless steel, upper surface are slotted, and it is 2mm that a circle cross-sectional area is fixed in slot2Rubber magnetic stripe 6；
Airtight diaphragm 2 is the round gel silica membrane of thickness 0.2mm, diameter 20cm；
Upper tabletting 3 is the injection molded polyethylene sheet material of thickness 1mm, diameter 20cm, and centre uses rectangular-ambulatory-plane engraved structure, interval
4 annular magnets 4 are embedded with, the length of every magnet 4 is 4cm；
Connecting shaft 5 is the stainless steel tube of diameter 5mm；
Mounting flange 7 is the ring stainless steel circle of outer diameter 20cm, internal diameter 18cm, with a thickness of 2mm.
The outer diameter of mounting flange 7, the diameter of airtight diaphragm 2, upper tabletting 3 diameter and waveguide pedestal 1 diameter it is all the same.
The working principle of the invention and workflow are:
In use, waveguide pedestal 1, front-end product and mounting flange 7 are bolted to connection, front-end product is located at wave
It leads between pedestal 1 and mounting flange 7, determines flange 7 and waveguide pedestal 1 is respectively placed in inside and outside front-end product.Waveguide pedestal 1
Having after higher electromagnet shield effect is fixed with front-end product can reach corresponding electromagnetic shielding demand.
When the positive pressure in front-end product is more than magnetic force between magnet 4 and rubber magnetic stripe 6 (the present embodiment be more than
When 150Pa~200Pa), airtight diaphragm 2 can be opened with upper tabletting 3 by air pressure, be formed between airtight diaphragm 2 and waveguide pedestal 1
Opening, starts to be vented outwards；With the increase of air pressure, opening is gradually increased, and capacity also increases with it, to have adjusted front end
Pressure in product；When air pressure, which drops to, is not enough to overcome the magnetic force between magnet 4 and rubber magnetic stripe 6, (the present embodiment is to work as
When air pressure drops to 150Pa or less), magnet 4 attracts each other with rubber magnetic stripe 6, and opening closure stops exhaust.
The present invention does not address place and is suitable for the prior art.
Claims (7)
1. a kind of low pressure is electromagnetically shielded safety valve, it is characterised in that the safety valve includes waveguide pedestal, airtight diaphragm, upper pressure
Piece, magnet, connecting shaft, rubber magnetic stripe and mounting flange；
From top to bottom successively upper tabletting, airtight diaphragm and waveguide pedestal are connected by connecting shaft；The rubber magnetic stripe is solid
It is scheduled in the groove of waveguide pedestal upper surface, magnet is fixed on the lower surface of tabletting, is cooperated with rubber magnetic stripe, is realized
Opening and closing between waveguide pedestal and airtight diaphragm；Mounting flange with front-end product for connecting.
2. low pressure according to claim 1 is electromagnetically shielded safety valve, it is characterised in that the material of the waveguide pedestal is
304 stainless steels or plating straight-chromiun stainless steel, upper surface are slotted, and it is 2mm that a circle cross-sectional area is fixed in slot2Rubber magnetic stripe.
3. low pressure according to claim 1 is electromagnetically shielded safety valve, it is characterised in that airtight diaphragm is round pellosil
Piece.
4. low pressure according to claim 1 is electromagnetically shielded safety valve, it is characterised in that upper tabletting is injection molded polyethylene piece
Material, centre use rectangular-ambulatory-plane engraved structure, and interval is embedded with magnet.
5. low pressure according to claim 1 is electromagnetically shielded safety valve, it is characterised in that connecting shaft is stainless steel tube.
6. low pressure according to claim 1 is electromagnetically shielded safety valve, it is characterised in that mounting flange is ring stainless steel
Circle.
7. low pressure according to claim 1 is electromagnetically shielded safety valve, it is characterised in that outer diameter, the airtight film of mounting flange
The diameter of piece, upper tabletting diameter and waveguide pedestal diameter it is all the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397752.0A CN109340424A (en) | 2018-11-22 | 2018-11-22 | A kind of low pressure electromagnetic shielding safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397752.0A CN109340424A (en) | 2018-11-22 | 2018-11-22 | A kind of low pressure electromagnetic shielding safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109340424A true CN109340424A (en) | 2019-02-15 |
Family
ID=65317353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811397752.0A Pending CN109340424A (en) | 2018-11-22 | 2018-11-22 | A kind of low pressure electromagnetic shielding safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109340424A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089999U (en) * | 1990-11-27 | 1991-12-04 | 周冀东 | Auto-close valve for gas of household |
| TWM329356U (en) * | 2006-06-23 | 2008-04-01 | Quan-Yu Lai | Magnetism exhaust valve |
| US20090230342A1 (en) * | 2008-03-12 | 2009-09-17 | Tokyo Electron Limited | Gate valve and semiconductor manufacturing apparatus |
| CN202349290U (en) * | 2011-11-30 | 2012-07-25 | 丹佛斯（天津）有限公司 | One-way valve |
| CN206329785U (en) * | 2016-12-23 | 2017-07-14 | 平湖阿莱德实业有限公司 | A kind of shield type waterproof vent valve |
| CN209196207U (en) * | 2018-11-22 | 2019-08-02 | 北京邦维高科特种纺织品有限责任公司 | A kind of low pressure electromagnetic shielding safety valve |
-
2018
- 2018-11-22 CN CN201811397752.0A patent/CN109340424A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089999U (en) * | 1990-11-27 | 1991-12-04 | 周冀东 | Auto-close valve for gas of household |
| TWM329356U (en) * | 2006-06-23 | 2008-04-01 | Quan-Yu Lai | Magnetism exhaust valve |
| US20090230342A1 (en) * | 2008-03-12 | 2009-09-17 | Tokyo Electron Limited | Gate valve and semiconductor manufacturing apparatus |
| CN202349290U (en) * | 2011-11-30 | 2012-07-25 | 丹佛斯（天津）有限公司 | One-way valve |
| CN206329785U (en) * | 2016-12-23 | 2017-07-14 | 平湖阿莱德实业有限公司 | A kind of shield type waterproof vent valve |
| CN209196207U (en) * | 2018-11-22 | 2019-08-02 | 北京邦维高科特种纺织品有限责任公司 | A kind of low pressure electromagnetic shielding safety valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |