CN203656289U - Diaphragm type two-stage pressure stabilizing electromagnetic valve - Google Patents
Diaphragm type two-stage pressure stabilizing electromagnetic valve Download PDFInfo
- Publication number
- CN203656289U CN203656289U CN201420014043.0U CN201420014043U CN203656289U CN 203656289 U CN203656289 U CN 203656289U CN 201420014043 U CN201420014043 U CN 201420014043U CN 203656289 U CN203656289 U CN 203656289U
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- valve body
- pressure
- voltage stabilizing
- pressure stabilizing
- diaphragm type
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 46
- 238000004891 communication Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 239000004202 carbamide Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model provides a diaphragm type two-stage pressure stabilizing electromagnetic valve. The diaphragm type two-stage pressure stabilizing electromagnetic valve comprises a pressure stabilizing valve body and a pilot valve body, the two of which are separated by a diaphragm, wherein a pilot assembly in which a coil is arranged is in threaded connection with the pilot valve body, an air inlet is formed in the pilot valve body, and an air outlet is formed in the pressure stabilizing valve body. The diaphragm type two-stage pressure stabilizing electromagnetic valve is characterized in that the pressure stabilizing valve body is provided with a first-stage pressure stabilizing valve body and a second-stage pressure stabilizing valve body which are orderly arranged in an air circulation direction, a pressure adjusting spring of which one end is fixed on a valve core is arranged in the second-stage pressure stabilizing valve body, the other end of the pressure adjusting spring is connected with a locking screw by virtue of a pressure adjusting screw, and the locking screw can be tightened or loosened in the pressure adjusting screw so that the initial elastic force of the pressure adjusting spring is increased or reduced. The fluctuation of the output pressure of the diaphragm type two-stage pressure stabilizing electromagnetic valve is greatly reduced by virtue of two-stage pressure adjustment, and the output pressure is stabilized; on the other hand, the locking screw is tightened or loosened to change the initial force of the pressure adjusting spring, and therefore, the purpose of fine adjusting the output pressure is achieved and the output pressure is better stabilizer.
Description
Technical field
The utility model relates to a kind of diaphragm electromagnetic valve, relates in particular to a kind of solenoid valve with secondary pressure stabilizing mechanism, is specially adapted to guarantee that for steady pressure urea-spray is even in diesel SCR after-treatment system.
Background technique
The effect of SCR system is the NOx removing in diesel engine, and system adopts urea to make reducing agent (have another name called and add indigo plant), and under the reduction of catalysts selective, NOx is reduced into nitrogen G&W.SCR system comprises: aqueous solution of urea storage tank, feedway, measuring apparatus, injection apparatus, catalyst converter and temperature and exhaust sensor etc., the nozzle of injection apparatus sprays urea for pressure regulation under the effect of solenoid valve.
Solenoid valve is to utilize the magnetic force of coil electricity generation and the elastic force acting in conjunction of spring reset generation to control the motion of closure member, in the time that high low pressure switches, traditional single-stage pressure maintaining valve delivery pressure is unstable, simultaneously, solenoid valve is because structure member and spring have error in processing and making process, this error also can cause delivery pressure unstable, thereby the uniformity of urea is sprayed in impact.
Summary of the invention
In order to solve the deficiency in background technique, the purpose of this utility model is to overcome the defect of background technique, and a kind of diaphragm type secondary voltage stabilizing solenoid valve is provided, and by second voltage regulation, makes delivery pressure stable.
For achieving the above object, the technical solution adopted in the utility model is: a kind of diaphragm type secondary voltage stabilizing solenoid valve, comprise the voltage stabilizing valve body and the guide valve blocks that separate by diaphragm, the first guide assembly of internal fasciole circle is threaded on described guide valve blocks, described guide valve blocks is provided with suction port, described voltage stabilizing valve body is provided with air outlet, it is characterized in that: described voltage stabilizing valve body is provided with first order voltage stabilizing valve body and second level pressure regulation valve body successively along gas communication direction, in described second level pressure regulation valve body, be provided with one end and be fixed on the pressure adjusting spring on spool, the other end of described pressure adjusting spring is connected with a lock screw by screw press, described lock screw can screw or unscrew and make the initial elastic force of described pressure adjusting spring increase or diminish in described screw press.
In preferred embodiment of the utility model, further comprise that in described first order voltage stabilizing valve body, being provided with one end is fixed on the Returnning spring on spool, the other end of described Returnning spring by spring seat be fixed on described voltage stabilizing valve body under cover.
Usefulness of the present utility model is: 1, a kind of diaphragm type secondary voltage stabilizing solenoid valve of the present utility model, when the key operation of vehicle is during in ON shelves, first guide assembly energising, solenoid valve is opened, vehicle-mounted pressurized air enters the first voltage stabilizing valve body by guide valve blocks, after voltage stabilizing reducing pressure, enters second level pressure regulation valve body, greatly reduce delivery pressure fluctuation by second voltage regulation, make delivery pressure stable.
2, by screwing or unscrew lock screw, change the starting force of pressure adjusting spring, in the time screwing lock screw, the starting force of pressure adjusting spring increases, can make the gas flow in pipeline reduce, reduce delivery pressure, while unscrewing lock screw, the starting force of pressure adjusting spring diminishes, can make the gas flow in pipeline increase, improve delivery pressure, by regulating lock screw to reach the effect of fine setting delivery pressure, make delivery pressure more stable.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model preferred embodiment.
In figure: 2, diaphragm, 4, voltage stabilizing valve body, 6, guide valve blocks, 8, first guide assembly, 10, suction port, 12, air outlet, 14, first order voltage stabilizing valve body, 16, second level pressure regulation valve body, 18, pressure adjusting spring, 20, screw press, 22, lock screw, 24, Returnning spring, 26, spring seat, 28, lower cover.
Embodiment
In order to make those skilled in the art person understand better the utility model scheme, and above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with embodiment and embodiment's accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of diaphragm type secondary voltage stabilizing solenoid valve, comprise the voltage stabilizing valve body 4 and the guide valve blocks 6 that separate by diaphragm 2, the first guide assembly 8 of internal fasciole circle is threaded on guide valve blocks 6, the power of coil is 3W, is down to 65 ℃ meeting temperature rise under JB/T 6378-2008 air operated reversing valve gas differential pressure condition, and the power that reduces coil reaches the object that reduces temperature rise, make temperature rise be reduced to 65 ℃ by original 135 ℃, be more conducive to the work of solenoid valve; Described guide valve blocks 6 is provided with suction port 10, described voltage stabilizing valve body 4 is provided with air outlet 12, described voltage stabilizing valve body 4 is provided with first order voltage stabilizing valve body 14 and second level pressure regulation valve body 16 successively along gas communication direction, in second level pressure regulation valve body 16, be provided with one end and be fixed on the pressure adjusting spring 18 on its spool, the other end of pressure adjusting spring 18 is connected with a lock screw 22 by screw press 20, and lock screw 22 can screw or unscrew and make the initial elastic force of pressure adjusting spring 18 increase or diminish in screw press 20.
Solenoid valve of the present utility model adopts the mode of secondary voltage stabilizing, when the key operation of vehicle is during in ON shelves, diesel engine starts, and first guide assembly 8 is switched on, and solenoid valve is opened, vehicle-mounted pressurized air enters the first voltage stabilizing valve body 14 by the suction port 10 of guide valve blocks 6, after voltage stabilizing reducing pressure, enter second level pressure regulation valve body 16, discharge from air outlet 12 by voltage stabilizing and after reducing pressure, greatly reduce the fluctuation of delivery pressure by second voltage regulation, make delivery pressure stable.
For the delivery pressure that overcomes error in processing and making process of structure member and spring and bring unstable, second level pressure regulation valve body 16 is designed to pressure can active adjustment structure: by screwing or unscrew lock screw 22, change the starting force of pressure adjusting spring 18, in the time screwing lock screw 22, the starting force of pressure adjusting spring 18 increases, can make the gas flow in pipeline reduce, reduce delivery pressure, while unscrewing lock screw 22, the starting force of pressure adjusting spring 18 diminishes, can make the gas flow in pipeline increase, improve delivery pressure, by regulating lock screw 22 to reach the effect of fine setting delivery pressure, make delivery pressure more stable.
As further improvement of the utility model, in described first order voltage stabilizing valve body 14, be provided with one end and be fixed on the Returnning spring 24 on its spool, the other end of Returnning spring 24 is fixed on by spring seat 26 on the lower cover 28 of voltage stabilizing valve body 4, carry out by the elastic force of Returnning spring 24 flow that in control valve body, the aperture of open-shut device regulates air, the pressure of output is carried out to voltage stabilizing and decompression.
Above-described embodiment is preferably mode of execution of the utility model; but mode of execution of the present utility model is not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify and all should be equivalent substitute mode, within being included in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (2)
1. a diaphragm type secondary voltage stabilizing solenoid valve, comprise the voltage stabilizing valve body and the guide valve blocks that separate by diaphragm, the first guide assembly of internal fasciole circle is threaded on described guide valve blocks, described guide valve blocks is provided with suction port, described voltage stabilizing valve body is provided with air outlet, it is characterized in that: described voltage stabilizing valve body is provided with first order voltage stabilizing valve body and second level pressure regulation valve body successively along gas communication direction, in described second level pressure regulation valve body, be provided with one end and be fixed on the pressure adjusting spring on spool, the other end of described pressure adjusting spring is connected with a lock screw by screw press, described lock screw can screw or unscrew and make the initial elastic force of described pressure adjusting spring increase or diminish in described screw press.
2. a kind of diaphragm type secondary voltage stabilizing solenoid valve according to claim 1, it is characterized in that: in described first order voltage stabilizing valve body, be provided with one end and be fixed on the Returnning spring on spool, the other end of described Returnning spring by spring seat be fixed on described voltage stabilizing valve body under cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014043.0U CN203656289U (en) | 2014-01-10 | 2014-01-10 | Diaphragm type two-stage pressure stabilizing electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014043.0U CN203656289U (en) | 2014-01-10 | 2014-01-10 | Diaphragm type two-stage pressure stabilizing electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656289U true CN203656289U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014043.0U Expired - Fee Related CN203656289U (en) | 2014-01-10 | 2014-01-10 | Diaphragm type two-stage pressure stabilizing electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656289U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111051763A (en) * | 2018-03-28 | 2020-04-21 | 特恩喜有限公司 | Cylinder with fluid pressure regulating valve having improved storage capacity |
| CN112240485A (en) * | 2020-03-05 | 2021-01-19 | 北京新能源汽车技术创新中心有限公司 | Hydrogenation port device for fuel cell vehicle and fuel cell vehicle provided with same |
| CN115596861A (en) * | 2022-12-16 | 2023-01-13 | 济南华信自动化工程有限公司（Cn） | Two-stage balance valve and balancing method |
-
2014
- 2014-01-10 CN CN201420014043.0U patent/CN203656289U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111051763A (en) * | 2018-03-28 | 2020-04-21 | 特恩喜有限公司 | Cylinder with fluid pressure regulating valve having improved storage capacity |
| CN111051763B (en) * | 2018-03-28 | 2022-02-18 | 特恩喜有限公司 | Cylinder with fluid pressure regulating valve having improved storage capacity |
| CN112240485A (en) * | 2020-03-05 | 2021-01-19 | 北京新能源汽车技术创新中心有限公司 | Hydrogenation port device for fuel cell vehicle and fuel cell vehicle provided with same |
| CN115596861A (en) * | 2022-12-16 | 2023-01-13 | 济南华信自动化工程有限公司（Cn） | Two-stage balance valve and balancing method |
| CN115596861B (en) * | 2022-12-16 | 2023-03-21 | 济南华信自动化工程有限公司 | Two-stage balance valve and balancing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 |