CN85203780U - Acid-resisting electromagnetic valve without opening pressure - Google Patents
Acid-resisting electromagnetic valve without opening pressure Download PDFInfo
- Publication number
- CN85203780U CN85203780U CN 85203780 CN85203780U CN85203780U CN 85203780 U CN85203780 U CN 85203780U CN 85203780 CN85203780 CN 85203780 CN 85203780 U CN85203780 U CN 85203780U CN 85203780 U CN85203780 U CN 85203780U
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- CN
- China
- Prior art keywords
- spool
- electromagnetic valve
- valve
- pressure
- solenoid valve
- 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.)
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Abstract
The utility model belongs to the technical field of an actuator of industrial automation instrument. Present home produced secondary opening electromagnetic valve is incapable of normally opening under the condition of no pressure. The used materials are 1Cr 18Ni 9Ti stainless steel, and to the concentrated nitric acid which has strong corrosiveness, the service life of the existing secondary opening electromagnetic valve is incapable of reaching to more than one year. The part which is higher than a valve core is not treated by an anti-corrosive treatment. The utility model has the advantage of corrosion resistance and adopts new technology, new material and new process to provide a secondary opening electromagnetic valve which is capable of opening under the condition of no pressure in an input pipe and has long service life. The secondary opening electromagnetic valve of the utility model is used for automatically controlling liquid and gas in a pipeline.
Description
This model utility is used for corrosive liquids, gas is realized the primary element of control automatically at pipeline, belongs to industrial process measurement and control instrument actuation technologies field.
At present, the secondary opening solenoid valve of domestic production needs 0.3kg/cm
2About cracking pressure, could normally open; In addition, using material is 1Cr 18Ni 9Ti stainless steel, for the severe corrosive red fuming nitric acid (RFNA), can not reach working life more than 1 year; (because in 98% nitric acid, at normal temperatures, its rate of corrosion is 0.97 millimeter/year) and, spool is not done preservative treatment with the upper part, and is not corrosion-resistant.(spool also will touch medium with the upper part)
The utility model purpose: power (electromagnetic force) does not adopt new technological scheme, new material, new process under the situation that does not change latus rectum outside having increasing, and a kind of cracking pressure that do not need is provided, anti-strong acid corrosion, the secondary opening solenoid valve of long service life.
It mainly is that a spool (employing centre lathe type) and secondary spool (piston type) are coupled together at interval with a long screw that this solenoid valve does not need cracking pressure, when energising, moving iron core in the solenoid valve is by upwards action of electromagnetic force effect, behind stroke one segment distance, (coherence is arranged, impact) the upwards action of spool of drive, opened the little valve port of secondary spool, secondary spool upper pressure reduces (equating with barometric pressure), at this moment a spool continues upwards action, just can drive the secondary spool like a cork by the primary screw that is positioned on a spool top rises, finish the valve opening action, the characteristics of this mode are: big and little at pressure, have and situation about not having under can both normally open.After outage, moving iron core and spool are owing to conduct oneself with dignity, and the pass valve resets.Medium enters secondary spool top by the throttling pore on the secondary spool, make secondary spool top recover original pressure, (with keeping uniform pressure in the supplying tube) when the supplying tube internal pressure rises to a certain degree, can make valve not beat from holding if the secondary spool does not have throttle orifice.
The nut place of the long screw of a spool top installation is flat type, and purpose is when a spool drives the rising of secondary spool, unlikely being closed of little valve port of secondary spool.
This valve ability strong acid corrosion, reaching long working life mainly is parts such as valve body, valve gap first and second spool, long screw employing China newly to be developed the anti-red fuming nitric acid (RFNA) extra low carbon of novel stainless steel ZGOOCr14Ni14Si4 high silicon stainless steel (being called for short the C4 steel) and polytetrafluoroethylmaterial material (plastics king) with modern advanced level form.In addition, the moving iron core of the electromagnet on spool top and bushing pipe inwall are made the electrostatic spraying teflon.Therefore, whole valve body is so long as can touch can both corroding by anti-strong acid of corrosive liquids, gas position.
The C4 steel is in 98% red fuming nitric acid (RFNA), and its rate of corrosion is 0.008 gram/rice at normal temperatures
2The time be equivalent to 0.0085 millimeter/year; And 1Cr 18Ni 9Ti Corrosion of Stainless Steel rate is 0.859 gram/rice
2The time, be equivalent to 0.97 millimeter/year, by contrast, the C4 steel will more than 100 times than 1Cr 18Ni 9Ti stainless steel, and price only differs 0.5 times, and the decay resistance in other common aggressive medium also is better than common stainless steel.(NBS " Stainless Acid Resistant Steel foundry goods technical specifications " GB2100-80)
At oil, chemical industry, medical treatment, all departments such as accumulating, to liquid, gas is at storage tank, pipeline, device, adopt solenoid valve to realize control automatically in the equipment, but because latus rectum all adopts the mode of secondary opening greater than the solenoid valve more than 6 millimeters, need cracking pressure, because the principle of general secondary opening solenoid valve: electromagnet is opened spool one time, secondary spool upper pressure is reduced, by the pressure in the supplying tube, (cause on the secondary spool, the unlatching pressure reduction of bottom) promoting the secondary spool rises, reach purpose of opening, so a lot of equipment, the liquid level of device is below three meters or pressure is lower than 0.3 kilogram/cm
2The time, just can not work, this model utility can address these problems, and can save the optional equipment of many devices.
This valve has solved the etching problem of anti-strong acid, can use in strong acid.Bigger breakthrough was arranged on working life.
Description of drawings:
1, electromagnet 2, moving iron core 3, spool 4, valve gap
5, secondary spool 6, valve body 7, bushing pipe 8, throttle orifice
9, long screw (the nut place of long screw is flat type)
Claims (4)
1, the utility model system need not the acidproof solenoid valve of cracking pressure and it is characterized in that spool and secondary spool are coupled together at interval with a long screw.
2, the acidproof solenoid valve of cracking pressure that need not as claimed in claim 1 is characterized in that spool and secondary spool are coupled together at interval with a long screw (the nut place of long screw is flat type).
3, the acidproof solenoid valve of cracking pressure that need not as claimed in claim 1 is characterized in that moving iron core (armature) and bushing pipe inwall are made the electrostatic spraying teflon.
4, the acidproof solenoid valve of cracking pressure that need not as claimed in claim 1 is characterized in that parts such as valve body, valve gap, first and second spool, long screw adopt the anti-red fuming nitric acid (RFNA) extra low carbon of new material ZGOOCr14Ni14Si4 high silicon stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85203780 CN85203780U (en) | 1985-09-04 | 1985-09-04 | Acid-resisting electromagnetic valve without opening pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85203780 CN85203780U (en) | 1985-09-04 | 1985-09-04 | Acid-resisting electromagnetic valve without opening pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85203780U true CN85203780U (en) | 1987-04-15 |
Family
ID=4799248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85203780 Granted CN85203780U (en) | 1985-09-04 | 1985-09-04 | Acid-resisting electromagnetic valve without opening pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85203780U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101156010B (en) * | 2005-03-29 | 2010-12-22 | 诺格伦公司 | A valve for an expandable gas or fluid distribution system |
| CN103185162A (en) * | 2011-12-29 | 2013-07-03 | 浙江三花股份有限公司 | Solenoid valve as well as manufacturing method thereof and bolt assembly |
-
1985
- 1985-09-04 CN CN 85203780 patent/CN85203780U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101156010B (en) * | 2005-03-29 | 2010-12-22 | 诺格伦公司 | A valve for an expandable gas or fluid distribution system |
| CN103185162A (en) * | 2011-12-29 | 2013-07-03 | 浙江三花股份有限公司 | Solenoid valve as well as manufacturing method thereof and bolt assembly |
| CN103185162B (en) * | 2011-12-29 | 2016-07-06 | 浙江三花股份有限公司 | Electromagnetic valve and manufacture method thereof and screw assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| WD01 | Invention patent application deemed withdrawn after publication |