CN203413211U - Electromagnetic valve - Google Patents
Electromagnetic valve Download PDFInfo
- Publication number
- CN203413211U CN203413211U CN201320383401.0U CN201320383401U CN203413211U CN 203413211 U CN203413211 U CN 203413211U CN 201320383401 U CN201320383401 U CN 201320383401U CN 203413211 U CN203413211 U CN 203413211U
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- CN
- China
- Prior art keywords
- valve body
- guide sleeve
- piston
- magnetic induction
- permanent magnet
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- Expired - Fee Related
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Abstract
The utility model relates to an electromagnetic valve. The electromagnetic valve comprises a valve body, an electromagnetic control device and a signal feedback system, wherein the lower end of a piston rod of a piston in the valve body is in sliding fit in a guide sleeve; the guide sleeve is tightly connected with the lower end of the valve body, the upper end of the guide sleeve extends into the valve body, and the lower end of the guide sleeve extends out of the valve body; the signal feedback system comprises a permanent magnet and a magnetic induction sensor; the permanent magnet is fixed at the lower end of the piston rod; the magnetic induction sensor is fixed in an extension section of the guide sleeve; and a magnetic induction gap is reserved between the magnetic induction sensor and the permanent magnet. The electromagnetic valve can display opening and closing states of the electromagnetic valve, and is convenient to use.
Description
Technical field
The utility model relates to solenoid valve field, particularly a kind of solenoid valve with signal feed back function.
Background technique
Solenoid valve can coordinate different circuit to realize the control of expection, and the precision of its control and flexibility ratio are good, in industry and civil area, is widely used.
The electromagnetic valve structure using at present as shown in Figure 3, comprise valve body 1, piston 2, coil 11, fixed core 12, moving iron core 10, during energising, electromagnetic force moves up iron core 10, poppet port 15 is opened, upper chamber's 14 pressure decline rapidly, and hydrodynamic pressure promotes piston 2 and moves up, the state of solenoid valve in opening; During power-off, electromagnetic force disappears, and moving iron core 10 resets poppet port 15 is closed, and upper chamber's 14 pressure increase, and piston 2 resets, the state of solenoid valve in closing.But existing solenoid valve can only control and opens or cut out, and user can not watch the position of piston, cannot judge the on off state of solenoid valve, carry out risk to the stable and safety strip of producing.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of solenoid valve is provided, and it can show the opening and closing state of solenoid valve, convenient use.
The technical solution of the utility model is: a kind of solenoid valve, the valve body and the electromagnetic control apparatus that comprise solenoid valve, in described valve body, the piston-rod lower end of piston is slidably fitted in a guide sleeve, described guide sleeve is fastenedly connected in valve body lower end, the upper end of guide sleeve extends into valve body, outside lower end, stretch out valve body, also comprise signal feedback system, described signal feedback system comprises permanent magnet and magnetic induction sensor, described permanent magnet is fixed on the lower end of piston rod, described magnetic induction sensor is fixed in overhanging section of guide sleeve, magnetic induction sensor and permanent magnet leave magnetic strength distance.
The circumference of described piston is provided with seal ring.
Described guide sleeve is fixed on valve body by screw thread, between guide sleeve and valve body, is provided with seal ring.
Adopt technique scheme: permanent magnet is fixed on the lower end of piston rod, and permanent magnet moves along with the movement of piston rod.When piston moves up, solenoid valve is opened, and permanent magnet is apart from the distance of magnetic induction sensor; When piston resets downwards, closed electromagnetic valve, permanent magnet is apart from the near distance of magnetic induction sensor.By the variable in distance between permanent magnet and magnetic induction sensor, cause that magnetic induction sensor exports different signals, determine the opening and closing state of solenoid valve, convenient and reliable.
Below in conjunction with the drawings and specific embodiments, be further described.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is magnetic induction sensor output circuit sketch of the present utility model;
Fig. 3 is traditional electrical magnet valve structural representation.
In accompanying drawing, 1 is valve body, and 2 is piston, and 3 is valve pocket mouth, 4 is valve body cover plate, and 5 is lower chambers, and 6 is throttle orifice, and 7 is piston spring, 8 is piston rod, and 9 is guide sleeve, and 10 is moving iron core, and 11 is coil, 12 is fixed core, and 13 is iron core setting sleeve ，14Wei upper chamber, and 15 is poppet port, 16 is guide's valve pad, and 17 is permanent magnet, and 18 is magnetic induction sensor, 19 is the first connecting line, and 20 is the second connecting line, and 21 is the 3rd connecting line.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of solenoid valve, comprises valve body 1 and the electromagnetic control apparatus of solenoid valve.A piston 2 is installed in described valve body 1, the valve pocket mouth 3 between the corresponding valve body inlet/outlet of piston 2, the circumference of piston 2 is provided with seal ring.The top of piston 2 is mounted with valve body cover plate 4, and the space between valve body cover plate 4 and piston 2 forms lower chambers 5, and lower chambers 5 is communicated with by throttle orifice 6 with import, the present embodiment, and throttle orifice 6 is arranged in the piston head of piston 2.Between piston 2 upper ends and valve body cover plate 4, be provided with piston spring 7.The lower end of described piston 2 connects piston rod 8, the present embodiment, and the upper end of piston rod 8 is through piston 2, and piston 2 is the upper end at piston rod 8 by card and locking nut axially locating.The lower end of piston rod 8 is by guide sleeve 9 location that are arranged on valve body 1, the present embodiment, described guide sleeve 9 is fixed on valve body 1 by screw-thread fit, the upper end of guide sleeve 9 extends in valve body 1, outside the lower end of guide sleeve 9, stretch out valve body 1, between guide sleeve 9 and valve body 1, be provided with seal ring, guide sleeve 9 also can be by being fixed on valve body 1.Described electromagnetic control system comprises moving iron core 10, fixed core 12, coil 11, moving iron core 10 and fixed core 12 are arranged in iron core setting sleeve 13, described iron core setting sleeve 13 is fixed on valve body cover plate 4 and makes the space between moving iron core 10 and valve body cover plate 4 form upper chamber 14, the present embodiment, described iron core setting sleeve 13 is fixed on valve body cover plate 4 by gland nut, gland nut is fixedly connected with valve body cover plate by screw thread, upper chamber 14 is communicated with by poppet port 15 with outlet, the lower end of moving iron core 10 is provided with the guide valve pad 16 corresponding with poppet port 15, upper chamber 14 is communicated with lower chambers 5.Wherein moving iron core 10 is positioned at the hypomere of iron core setting sleeve 13 and extends into upper chamber, between the moving extending end of iron core 10 and the lower end of iron core setting sleeve 13, be provided with Returnning spring, when moving iron core 10 is close to poppet port 15, Returnning spring is in compressive state, Returnning spring also can be arranged between moving iron core and fixed core 12, fixed core 12 is positioned at the epimere of iron core setting sleeve 13, the position at the corresponding coil of fixed core 12 11 places, and moving iron core 10 can slide up and down in iron core setting sleeve 13.Also comprise signal feedback system, described signal feedback system comprises permanent magnet 17, magnetic induction sensor 18, and permanent magnet 17 is fixed on the lower end of piston rod 8, the present embodiment, and permanent magnet is adhesively fixed on the lower end of piston rod 8.Magnetic induction sensor 18 is fixed in overhanging section of guide sleeve, magnetic induction sensor 18 leaves magnetic strength distance with permanent magnet 17, the present embodiment, magnetic induction sensor 18 is fixed on by locking nut in overhanging section of guide sleeve, magnetic induction sensor 18 is connected with respectively the first connecting line 19, the second connecting line 20 and the 3rd connecting line 21, wherein the second connecting line 20 is common wire, the first connecting line 19 is connected DC6～DC36V input voltage with the 3rd connecting line 21.
During work, coil 11 energisings of solenoid valve, iron core 10 is moved in fixed core 12 adhesives, poppet port 15Yu upper chamber 14 is communicated with, poppet port 15 is opened, now the pressure of upper chamber 14 and lower chambers 5 equals the pressure in valve body 1 outlet port, and the pressure of piston 2 lower end surfaces equals the pressure of valve body 1 ingress, because the pressure medium of ingress is greater than the pressure medium in outlet port, piston 2 moves up because of medium differential pressure, drive permanent magnet 17 to move up simultaneously, when permanent magnet 17 moves up away from magnetic induction sensor 18 along with piston 2, the first connecting line of magnetic induction sensor 18 and the second connecting line will be exported DC6～DC36V voltage signal, now represent the state of solenoid valve in opening.Otherwise, coil 11 power-off when solenoid valve 1, moving iron core 10 moves down and is close to poppet port under the effect of Returnning spring, poppet port is closed, now the pressure of valve body ingress equals the pressure of upper and lower chamber, and piston 2 moves down in the effect of piston spring 7, when permanent magnet 17 resets near sensor downwards along with piston 2, the first connecting line of magnetic induction sensor 18 and the second connecting line, by the output of no-voltage signal, now represent the state of solenoid valve in closing.
Claims (3)
1. a solenoid valve, the valve body (1) and the electromagnetic control apparatus that comprise solenoid valve, in described valve body (1), piston rod (8) lower end of piston (2) is slidably fitted in a guide sleeve (9), it is characterized in that: described guide sleeve (9) is fastenedly connected in valve body lower end, the upper end of guide sleeve (9) extends into valve body (1), outside lower end, stretch out valve body (1), also comprise signal feedback system, described signal feedback system comprises permanent magnet (17) and magnetic induction sensor (18), described permanent magnet (17) is fixed on the lower end of piston rod (8), described magnetic induction sensor (18) is fixed in overhanging section of guide sleeve, magnetic induction sensor (18) leaves magnetic strength distance with permanent magnet (17).
2. solenoid valve according to claim 1, is characterized in that: the circumference of described piston (2) is provided with seal ring.
3. solenoid valve according to claim 1, is characterized in that: it is upper that described guide sleeve (9) is fixed on valve body (1) by screw thread, between guide sleeve (9) and valve body (1), is provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320383401.0U CN203413211U (en) | 2013-07-01 | 2013-07-01 | Electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320383401.0U CN203413211U (en) | 2013-07-01 | 2013-07-01 | Electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413211U true CN203413211U (en) | 2014-01-29 |
Family
ID=49976100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320383401.0U Expired - Fee Related CN203413211U (en) | 2013-07-01 | 2013-07-01 | Electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235465A (en) * | 2014-08-29 | 2014-12-24 | 南京南瑞集团公司 | Feedback device for working state of photoelectric irrigation diaphragm valve |
-
2013
- 2013-07-01 CN CN201320383401.0U patent/CN203413211U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235465A (en) * | 2014-08-29 | 2014-12-24 | 南京南瑞集团公司 | Feedback device for working state of photoelectric irrigation diaphragm valve |
| CN104235465B (en) * | 2014-08-29 | 2016-05-25 | 南京南瑞集团公司 | A kind of photo-electric is irrigated diaphragm valve duty feedback device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Dongfang electromagnetic valve factory Assignor: Wang Shuxian Contract record no.: 2015500000031 Denomination of utility model: Automatic electromagnetic valve for cooker hood for back fume Granted publication date: 20140129 License type: Exclusive License Record date: 20150618 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20140129 Termination date: 20170701 |