CN2243579Y - Low back pressure sealing driving valve - Google Patents
Low back pressure sealing driving valve Download PDFInfo
- Publication number
- CN2243579Y CN2243579Y CN 95250558 CN95250558U CN2243579Y CN 2243579 Y CN2243579 Y CN 2243579Y CN 95250558 CN95250558 CN 95250558 CN 95250558 U CN95250558 U CN 95250558U CN 2243579 Y CN2243579 Y CN 2243579Y
- Authority
- CN
- China
- Prior art keywords
- valve
- back pressure
- isolation diaphragm
- housing
- valve rod
- 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.)
- Expired - Fee Related
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to an electromagnetic valve plug device which comprises a casing, a magnetic core, an electromagnetic coil and an armature with a valve rod, wherein, one end of the valve rod threads out of the casing and is connected with a valve plug which reverts by the action of the spring force of a sealed valve; a telescopic isolation diaphragm, which can also generates reverting elastic force on the stretching use, is also arranged in the casing, the valve rod of which the movement clearance can reserve an aeration gap passes through a center hole of the isolation diaphragm and is combined with the static seal of the center hole, and the periphery of the valve rod is combined with the static seal of the casing through adhesion or a press piece. With good sealing performance, little back pressure, movement agility and great valve-sealing force, the utility model is especially adapted for a low back-pressure seal driven valve used for gas safeguard.
Description
The utility model relates to a kind of electromagnetic valve plug device, and the low back pressure of using especially for fuel safety protecting seals actuating valve.
Existing solenoid valve, in the valve adhesive face be in communication with the outside by the free gap or by the sealing of O ring, resistance is big, reliability is low, I on January 15th, 95 application number be: 95200976.5 " sealing actuating valve ", the isolation diaphragm sealing is adopted in valve rod and housing free gap, and the isolation diaphragm periphery is pressed between the left shell and right shell body of valve.
The aforesaid way diaphragm area is bigger, be subjected to the combustion gas back pressure also bigger, particularly when the combustion gas reduction valve is malfunctioning, too high gaseous-pressure produces bigger counterpressure to diaphragm, the valve plug valve sealing force reduces, when counterpressure during greater than envelope valve spring and valve plug counterpressure sum, valve plug is with forced opening, and combustion gas will be leaked.
The low back pressure sealing actuating valve that the purpose of this utility model just provides a kind of good seal performance, back pressure is little, valve sealing force is big, valve plug work is flexible, reliability is high.
The utility model is achieved in that the utility model comprises the armature of housing, magnetic core, electromagnetic coil and band valve rod, electromagnetic coil is installed in the scrobicular ring of magnetic core, one end of valve rod passes outside the housing and with valve plug and links, valve plug is replied by the effect of envelope valve spring power, it is characterized in that: also comprise being contained in telescopic isolation diaphragm in the housing, isolation diaphragm is shaped on center hole, valve rod passes the isolation diaphragm center hole and combines with its static seal, and isolation diaphragm periphery is by bonding or combine with the housing static seal by compressing member.
Magnetic core of the present utility model is a magnet case, when electromagnetic coil is switched on, and the adhesive face adhesive of armature and magnetic core.
Housing of the present utility model can be made separately, and when the utility model used on the solenoid type solenoid valve, the framework magnet case of the also available composition magnetic core of housing was made.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model embodiment 1 a structural representation.
Fig. 2 is the utility model embodiment 1 a valve rod schematic cross-section.
Fig. 3 is the utility model embodiment 2 a structural representation.
Work schematic representation when Fig. 4 is the utility model embodiment 2 and air valve body assembling use.
Referring to Fig. 1, this is a self-priming solenoid valve, its housing (6) is formed by connecting by left shell (6a) and right shell body (6b), the armature (5) of magnetic core (3) and band valve rod (11) is housed in the cavity of left shell (6a) and right shell body (6b) formation, electromagnetic coil (4) is installed in the scrobicular ring of magnetic core (3), one end of valve rod passes the outer also same valve plug (8) of housing (6) and links, valve plug (8) is replied by the effect of envelope valve spring (7) power, telescopic isolation diaphragm (13) also is housed in housing, isolation diaphragm (13) is shaped on center hole, valve rod passes isolation diaphragm (13) center hole and combines with its static seal, and isolation diaphragm (13) periphery is by bonding or pass through compressing member (12) and combine with the housing static seal.
The present embodiment compressing member is the baffle plate (12) of a band center hole, by baffle plate (12) isolation diaphragm (13) static seal is pressed on right shell body (6b), and baffle plate (12) can be fixed on the right shell body (6b) by screw.
Present embodiment is installed in baffle plate (12) between left shell (6a) and the right shell body (6b) for easy to assembly, because the effect of baffle plate (12) can make isolation diaphragm (13) area make forr a short time, makes it reduced by the back pressure area.
Because valve rod (11) is tightr with the movement clearance size mixing ratio of housing (6), and when valve rod (11) moves, isolate diaphragm (13) outside it cavity volume volume will change, like this when stem movement, because the respiration of cavity can make action sensitivity descend, valve is driven in influence, and the cross section cylindrical of present embodiment valve rod (11) and housing (6) motor segment is shaped on the plane makes valve rod (11) and housing (6) movement clearance leave the ventilation slot.Because the existence of ventilation slot makes stem movement freely, simultaneously valve rod (11) is because the cross section is shaped on the plane, and the area of contact of itself and housing is further reduced, and resistance to motion further reduces.Fig. 2 is the schematic cross-section of valve rod (11).
Referring to Fig. 3, Fig. 3 is applied to the water-driven valve that aqueous vapor interlock valve water valve drives for the utility model.Present embodiment housing (6) is formed by connecting by left shell (6a) and right shell body (6b), in the cavity of left shell (6a) and right shell body (6b) formation, mobilizable magnetic core (3) of taking back multiple spring (1) is housed, magnetic core (3) can be installed on the magnetic core frame (2), in the scrobicular ring that magnetic core (3) forms electromagnetic coil (4) is housed, the armature (5) that one band valve rod (11) is arranged on magnetic core (3) the adhesive face, valve rod (11) is a hollow valve rod, one end of valve rod (11) passes housing (6) valve plug (8) outer and band envelope valve spring (7) together and links, there is a push rod (9) can pass the center hole of valve rod (11) and armature (5) during use, housing inner valve stem (11) seals with a telescopic isolation diaphragm (13) with the movement clearance of housing (6), and isolation diaphragm (13) can be corrugated tube shape.Push rod (9) seals with another bellows (10) with hollow valve rod (11) gap.
In order to reduce the combustion gas back pressure, the isolation diaphragm same valve rods of (13) one ends (11) the radial seal combination of present embodiment, isolation diaphragm (13) the other end periphery compresses by compressing member, compressing member (12) is for being shaped on the cored screw of screw thread, and isolation diaphragm (13) periphery screws in to compress in the housing (6) by cored screw realizes sealing combination.
Referring to Fig. 4, during the same valve body of present embodiment (14) assembling work, push rod be subjected to the effect of water valve needle force (F) that magnetic core is moved inwards and compression reaction spring (1) so that magnetic core is returned, simultaneously magnetic core drive because of the armature (5) of electromagnetic coil (4) energising adhesive thus valve plug (8) is opened in motion together, corrugated tube shape isolation diaphragm (13) is stretched simultaneously.
Present embodiment isolation diaphragm (13) is made with elastic material, can produce back stretch when its extensional motion.
When need close valve protection, electromagnetic coil (4) dead electricity, armature (5), valve rod (11) and valve plug (8) are replied under the acting in conjunction of envelope valve spring (7) and isolation diaphragm (13) restoring force, close port.When valve port is closed, valve sealing force adds that for envelope valve spring power the suffered combustion gas counterpressure of valve plug (8) deducts the counterpressure of the suffered combustion gas of isolation diaphragm (13), because the combustion gas counterpressure is determined by suffered back pressure area, in order to eliminate the influence of combustion gas counterpressure, when isolation diaphragm (13) is made and installed, can make isolation diaphragm (13) be subjected to the back pressure area less than valve plug (8) back pressure area.
The utlity model has following characteristics:
1, since isolation diaphragm periphery by bonding or be combined with the housing static seal by compressing member, Make isolation diaphragm be subjected to the area of combustion gas back pressure can make littlelyr, the combustion gas back pressure reduces, the envelope valve Power strengthens.
2, isolation diaphragm when opening valve work, can produce answer like this owing to be contained in the housing Elastic force, back stretch are fit to self-priming electromagnetism along with the increasing of impulse stroke is changed from small to big very much The pull characteristics of valve and the little characteristic of hydrodynamic(al) valve water valve initial stage thrust make it not affect out valve events, Can increase back stretch again, envelope valve reliability height.
3, because the ventilation slot is left in housing and stem movement gap, make stem movement freely, The motoricity resistance is little.
Claims (6)
1, a kind of low back pressure sealing actuating valve, comprise housing (6), magnetic core (3), the armature (5) of electromagnetic coil (4) and band valve rod (11), electromagnetic coil (4) is installed in the scrobicular ring of magnetic core (3), one end of valve rod (11) passes the outer also same valve plug (8) of housing (6) and links, valve plug (8) is replied by the effect of envelope valve spring (7) power, it is characterized in that: also comprise being contained in telescopic isolation diaphragm (13) in the housing (6), isolation diaphragm (13) is shaped on center hole, valve rod (11) passes isolation diaphragm (13) center hole and combines with its static seal, and isolation diaphragm (13) periphery is by bonding or pass through compressing member (12) and combine with the housing static seal.
2, low back pressure sealing actuating valve according to claim 1, it is characterized in that: isolation diaphragm (13) it be subjected to the back pressure area less than valve plug (8) back pressure area.
3, low back pressure sealing actuating valve according to claim 1, it is characterized in that: isolation diaphragm (13) is made with elastic material, and can produce back stretch when extensional motion is worked.
4, low back pressure sealing actuating valve according to claim 1, it is characterized in that: the cross section cylindrical of valve rod (11) and housing (6) motor segment is shaped on the plane makes valve rod (11) and housing movement clearance leave the ventilation slot.
5, according to one of them described low back pressure sealing actuating valve of claim 1-4, it is characterized in that: housing (6) is formed by connecting by left shell (6a) and right shell body (6b), compressing member (12) is the baffle plate (12) of a band center hole, by baffle plate (12) isolation diaphragm (13) static seal is pressed on the right shell body (6b), baffle plate (12) is fixed on right shell body (6b) by screw and goes up or be installed between left shell (6a) and the right shell body (6b).
6, according to one of them described low back pressure sealing actuating valve of claim 1-4, it is characterized in that: compressing member (12) is for being shaped on the cored screw of screw thread, and isolation diaphragm (13) periphery screws in to compress in the housing (6) by cored screw realizes sealing combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95250558 CN2243579Y (en) | 1995-12-31 | 1995-12-31 | Low back pressure sealing driving valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95250558 CN2243579Y (en) | 1995-12-31 | 1995-12-31 | Low back pressure sealing driving valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243579Y true CN2243579Y (en) | 1996-12-25 |
Family
ID=33886636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95250558 Expired - Fee Related CN2243579Y (en) | 1995-12-31 | 1995-12-31 | Low back pressure sealing driving valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243579Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110475950A (en) * | 2017-04-06 | 2019-11-19 | 肯德隆（菲林根）有限公司 | Particularly for adjusting the electromagnetic control device of the camshaft of internal combustion engine |
-
1995
- 1995-12-31 CN CN 95250558 patent/CN2243579Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110475950A (en) * | 2017-04-06 | 2019-11-19 | 肯德隆（菲林根）有限公司 | Particularly for adjusting the electromagnetic control device of the camshaft of internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |