CN2618005Y - Self-retaining solenoid valve with self-shutting cut-off function - Google Patents
Self-retaining solenoid valve with self-shutting cut-off function Download PDFInfo
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- CN2618005Y CN2618005Y CN 03221378 CN03221378U CN2618005Y CN 2618005 Y CN2618005 Y CN 2618005Y CN 03221378 CN03221378 CN 03221378 CN 03221378 U CN03221378 U CN 03221378U CN 2618005 Y CN2618005 Y CN 2618005Y
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- self
- sealing cover
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- electromagnetic valve
- pressure relief
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Abstract
The utility model relates to an electromagnetic valve, in particular to a self-hold electromagnetic valve with a power-off auto-shutting function, comprising an electromagnetic valve element and an electric-control element. The utility model is characterized in that: in the electromagnetic valve element, a sealed cover and a rubber seal pad are arranged in turn between the sealed cap of the moving iron core and the inlet, outlet oil ports; a cavity I and II, a pressure relief vent and a communication pore communicated with the cavity I and II are arranged in the sealed cover; a sealing element with a pressure relief pore is positioned on the jacket of the sealed cover; a mosfet control chip is adopted in the electric-control element. The utility model can automatically shut off the electromagnetic valve on any conditions of power failure and on any opening states, so the utility model has a thief proof function. The utility model has the advantages of rational design, and convenient operation and installation, being suitable for a wide application of low power dissipation meters powered by a plurality of types of batteries.
Description
Technical field
The utility model relates to a kind of solenoid valve, exactly is a kind of self-holding electromagnetic valve.
Background technique
Existing self-holding electromagnetic valve has multiple structural type, but it substantially all is the interlocking principle that adopts electromagnet, permanent magnet and spring to form, one end and the sealed cap of movable core are fixed together, the other end and permanent magnet have a gap, movable core overcoat solenoid, keep movable core and permanent magnet that one gap is arranged by a spring during solenoid non-energized, sealed cap and closed hole driving fit simultaneously, valve closing; When the solenoid forward is switched on movable core is contacted with permanent magnet, make the solenoid outage then, sealed cap separates with closed hole simultaneously, valve open, when the attraction force of movable core and permanent magnet during greater than the elastic force of spring, will keep this state, realize that zero power keeps; When solenoid oppositely during energising one impulsive current under magnetic force and elastic force acting in conjunction, movable core is separated with permanent magnet, thereby throttle down and keeps this state with zero power.A kind of have manual and electric solenoid valve are disclosed as Chinese patent CN2480626, be characterized in arbitrary passage of valve body, being provided with magnetic movable sealing piece, the bottom of movable sealing piece is carried out movable sealing with the joint of valve passage outlet and inlet and is cooperated, its top is connected with the "T"-shaped handle that passes valve gap, between valve gap and movable sealing piece, there is spring to support, between valve gap and electromagnetic coil, is fixed with the ferrite permanent magnet.The self-holding electromagnetic valve that discloses of Chinese patent CN2230849 and for example, be characterized in that design has a self-sustaining mechanism between spool and valve core housing, promptly on spool, have enclosed road groove, design has a positioning block in the middle of the road groove, on valve core housing, be provided with a locating stud, one end of locating stud is enclosed within the groove, and locating stud can be done relative movement along the road groove track.In addition, also on valve body design a signal indicating device arranged.
The shortcoming of existing self-holding electromagnetic valve is: can't realize anti-theft feature when it is used for message accounting.Such as when valve is in open mode, artificial or accident power-off valve will be in opening state all the time, and instrument can't be chargeed and caused meter with Louing during outage, so up to the present not see the report that has this type of solenoid valve to be used for message accounting as yet.
Summary of the invention
In order to have under the self-sustaining function prerequisite of zero power, automatically close solenoid valve in the time of can also realizing cutting off the power supply, thereby realization anti-theft feature, the self-holding electromagnetic valve of zero power can be widely used in the various battery powered low power consumption tariff meters, and the utility model provides a kind of self-holding electromagnetic valve that has the self-closing function that cuts off the power supply.
The self-holding electromagnetic valve that has the self-closing function that cuts off the power supply comprises the solenoid valve and the collecting of electrical controls, solenoid valve comprises valve body, movable core, permanent magnet, electromagnetic coil, spring and into and out of hydraulic fluid port, its collecting of electrical controls comprises charging circuit, positive and negative drive circuit, it is characterized in that:
The sealed cap of A, movable core and into and out of being provided with sealing cover, rubber packing between the hydraulic fluid port successively;
Described sealing cover middle part, be provided with pressure relief vent 4 with the lid of the sealed cap corresponding part of movable core, pressure relief vent 4 is served as reasons and is axially gone to radially L shape hole, an adjacent side is provided with the intercommunicating pore 3 that axially runs through lid, sealing cover be an indent cavity I into and out of the hydraulic fluid port corresponding part, be axially arranged with spring in the indent cavity I, indent cavity I end face is provided with rubber pressure pad 2, on the rubber pressure pad 2, with the filler opening corresponding part be provided with inlet opening 1; Described sealing cover and valve body corresponding surface place middle part pressure relief vent and connection hole are an indent cavity II, and there is a boss that raises up at place, pressure relief vent aperture; Described sealing cover and valve body corresponding surface outer rim are the step surface of evagination; Intercommunicating pore 3 is communicated with indent cavity I with indent cavity II, inlet opening 1 is communicated with indent cavity I with filler opening;
Described sealing cover outer cover is provided with Sealing, is positioned on the Sealing into and out of hydraulic fluid port, also is provided with the release micropore that communication seals covers pressure relief vent (4) and oil outlet on the Sealing;
B, between described charging circuit and positive and negative drive circuit, be connected to control chip, described control chip is that mosfet has eight wiring pin, wiring pin 5,6,7,8 backs in parallel are connected in series with a current-limiting resistance, be connected with the input end of the reverse direction actuation circuit of positive and negative drive circuit again, wiring pin 1 ground connection, wiring pin 2,3 backs in parallel are connected with the electric capacity of charging circuit and the negative pole of diode, are connected with the power supply common port of positive and negative drive circuit simultaneously; Wiring pin 4 is connected with positive source with diode cathode;
One discharge resistance is parallel between the power supply positive and negative terminal, and power positive end is connected with the diode cathode of charging circuit
The input end of positive and negative drive circuit is the control signal input end, and its output terminal is connected with the solenoid valve electromagnetic coil.
Be provided with seal washer between described sealing cover and the valve body.
Be provided with seal washer between described Sealing and the sealing cover.
Common self-holding electromagnetic valve can realize that zero-power keeps, but if when it is in opening state, artificial or fault is cut off the power supply, it will be held open state, in using it for message accountings such as battery powered IC-card water meter, warm table, this moment, message accounting can not be worked, but valve still is in opening state, charge thereby cause Lou, promptly can't be thief-proof.The utility model self-holding electromagnetic valve, outage all will be closed solenoid valve automatically by any way under any opening state, thereby realizes thief-proof function.The utility model reasonable in design, easy to install and use, can be widely used in the various battery powered low power consumption tariff meters.
Description of drawings
Fig. 1 is the utility model electromagnetic valve structure schematic representation,
Fig. 2 is the utility model control section electrical schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is illustrated further by embodiment.
Embodiment:
This self-holding electromagnetic valve that has the self-closing function that cuts off the power supply comprises the solenoid valve and the collecting of electrical controls, and its solenoid valve is an actuator, comprises valve body 8, yoke 9, movable core 12, permanent magnet 10, electromagnetic coil 7, spring 11 and liquid inlet and outlet; Its collecting of electrical controls comprises charging circuit, positive and negative drive circuit, sees Fig. 1.
Be provided with sealing cover 14, rubber packing 2 between the sealed cap of movable core 12 and the liquid inlet and outlet successively.
Sealing cover 14 middle parts, open pressure relief vent 4 with the lid middle part of sealed cap 6 corresponding parts of movable core 12, pressure relief vent 4 is served as reasons and is axially gone to radially L shape hole, an adjacent side has the intercommunicating pore 3 that axially runs through lid, sealing cover 14 is an indent cavity I with the liquid inlet and outlet corresponding part, in the indent cavity I spring 16 is housed axially, indent cavity I end face is equipped with rubber packing 2, on the rubber packing 2, with the liquid entering hole corresponding part have inlet opening 1.Sealing cover 14 is an indent cavity II with valve body 8 corresponding surface places middle part pressure relief vent 4 and attachment hole 3 places, and there is a boss that raises up at place, pressure relief vent 4 apertures; Sealing cover 14 is the step surface of evagination with valve body corresponding surface outer rim.Intercommunicating pore 3 is communicated with indent cavity I with indent cavity II, inlet opening 1 is communicated with indent cavity I with liquid entering hole.
The Sealing 17 of band release micropore is sleeved on the sealing cover 14, sees Fig. 1, and liquid inlet and outlet is positioned on the Sealing 17, also has the release micropore of pressure relief vent 4 and liquid outlet on the communication seals lid 14 on the Sealing 17.
Sealing gasket 5,13 is housed respectively between valve body 8 and the sealing cover 14.
Between Sealing 17 and the sealing cover 14 seal washer 15 is housed.
During work, when electromagnetic coil 7 oppositely leads to an electrical pulse, unshakable in one's determination 12 are magnetized, its a end is opposite with the b end magnetic polarity of permanent magnet 10, the thrust that the attraction force that produces overcomes iron core spring 11 drives the pressure relief vent 4 that sealed cap 6 breaks away from the close lid 14 of plastics, and keep this state by the attraction force of permanent magnet 10, the liquid that entered by liquid entering hole this moment enters indent cavity 1 by the release micropore of plastic seal 17, intercommunicating pore 3 by the close lid 14 of plastics enters indent cavity 2 again, indent cavity 2 is communicated with liquid outlet opening by release micropore 4 and lateral communication hole, thereby make rubber packing 2 pressure at both sides balances, rubber packing 2 is opened, and liquid entering hole directly is communicated with liquid outlet, valve open, this state relies on iron core spring 11 to keep, and need not energising and keeps; When electromagnetic coil 7 forwards lead to an electrical pulse, 12a end unshakable in one's determination is identical with the b end magnetic polarity of permanent magnet 10, the repulsive force that produces and the thrust of iron core spring 11 drive iron core 12 jointly, make the release micropore 4 on the sealed cap 6 sealing plastic closures 14, at this moment cavity 1 only is communicated with cavity II, the liquid that is entered cavity 1 and cavity II by inlet opening 1 produces malleation on the top of rubber packing 2, this malleation makes rubber packing 2 compress the sealing edge, liquid entering hole and liquid outlet are isolated, valve closing, this state relies on iron core spring 11 to keep, and need not energising and keeps.
Its collecting of electrical controls is seen Fig. 2, comprises charging circuit, control chip, current-limiting resistance and positive and negative drive circuit.
Between charging circuit and positive and negative drive circuit, be connected to control chip, this control chip is that mosfeta has eight wiring pin, wiring pin 5,6,7,8 is to be connected in series with a current-limiting resistance R7 after the output terminal parallel connection, be connected with the input end of the reverse direction actuation circuit of positive and negative drive circuit again, wiring pin 1 ground connection, wiring pin 2,3 is to be connected with the electric capacity E1 of charging circuit and the negative pole of diode D1 after the input end parallel connection, is connected with the power supply common port of positive and negative drive circuit simultaneously; Wiring pin 4 is connected with positive source BP with diode D1 is anodal;
One discharge resistance R12 is parallel between power supply positive and negative terminal B_P and the B_N, and power positive end B_P is connected with the diode D1 of charging circuit is anodal.
Input end OFF, the ON of positive and negative drive circuit is the control signal input end, and its output terminal JD1, JD2 are connected with the solenoid valve electromagnetic coil.
Collecting of electrical controls electricity principle as shown in Figure 2, when at the logical direct impulse of ON end, when the OFF end keeps low level, valve is in open mode; When in the logical direct impulse of OFF end, ON end maintenance low level, valve is in closed condition; No matter when between B_P and B_N power down mosfet /EN holds step-down immediately, mosfet enables, because E1 joins by diode reverse and power supply, electricity on the E1 can not bleed off immediately, the input end IN that makes mosfet is a wiring pin 2,3 still keep high level, make the switching circuit endure of solenoid valve simultaneously, this moment is owing to mosfet's enables, the output terminal OUT that makes mosfet is a wiring pin 5,6,7,8 is high level, this high level is added on the OFF loop by current-limiting resistance R7, make closed electromagnetic valve, the electricity that in this process electric capacity E1 is filled exhausts substantially, thereby realizes the function of closing automatically of outage.
Claims (3)
1, the self-holding electromagnetic valve that has a self-closing function that cuts off the power supply comprises the solenoid valve and the collecting of electrical controls, solenoid valve comprises valve body, movable core, permanent magnet, electromagnetic coil, spring and liquid inlet and outlet, its collecting of electrical controls comprises charging circuit, switch driving circuit, it is characterized in that:
Be provided with sealing cover, rubber packing between the sealed cap of A, movable core and the liquid inlet and outlet successively;
Described sealing cover middle part, be provided with pressure relief vent (4) with the lid of the sealed cap corresponding part of movable core, pressure relief vent (4) is served as reasons and is axially gone to radially L shape hole, an adjacent side is provided with the intercommunicating pore (3) that axially runs through lid, sealing cover and liquid inlet and outlet corresponding part are an indent cavity I, be axially arranged with spring in the indent cavity I, indent cavity I end face is provided with rubber pressure pad (2), and rubber pressure pad (2) is gone up, is provided with inlet opening (1) with the liquid entering hole corresponding part; Described sealing cover and valve body corresponding surface place middle part pressure relief vent and connection hole are an indent cavity II, and there is a boss that raises up at place, pressure relief vent aperture; Described sealing cover and valve body corresponding surface outer rim are the step surface of evagination;
Described sealing cover outer cover is provided with Sealing, and liquid inlet and outlet is positioned on the Sealing, also is provided with the release micropore that communication seals covers pressure relief vent (4) and oil outlet on the Sealing;
B, between described charging circuit and positive and negative drive circuit, be connected to control chip, described control chip is that mosfet has eight wiring pin, wiring pin 5,6,7,8 backs in parallel are connected in series with a current-limiting resistance, be connected with the input end of the reverse direction actuation circuit of positive and negative drive circuit again, wiring pin 1 ground connection, wiring pin 2,3 backs in parallel are connected with the electric capacity of charging circuit and the negative pole of diode, are connected with the power supply common port of positive and negative drive circuit simultaneously; Wiring pin 4 is connected with positive source with diode cathode;
One discharge resistance is parallel between the power supply positive and negative terminal, and power positive end is connected with the diode cathode of charging circuit
The input end of positive and negative drive circuit is the control signal input end, and its output terminal is connected with the solenoid valve electromagnetic coil.
2, the self-holding electromagnetic valve that has the self-closing function that cuts off the power supply according to claim 1 is characterized in that: be provided with seal washer between described sealing cover and the valve body.
3, the self-holding electromagnetic valve that has the self-closing function that cuts off the power supply according to claim 1 is characterized in that: be provided with seal washer between described Sealing and the sealing cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221378 CN2618005Y (en) | 2003-04-21 | 2003-04-21 | Self-retaining solenoid valve with self-shutting cut-off function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221378 CN2618005Y (en) | 2003-04-21 | 2003-04-21 | Self-retaining solenoid valve with self-shutting cut-off function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2618005Y true CN2618005Y (en) | 2004-05-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03221378 Expired - Fee Related CN2618005Y (en) | 2003-04-21 | 2003-04-21 | Self-retaining solenoid valve with self-shutting cut-off function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2618005Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744250B (en) * | 2004-08-30 | 2010-10-06 | 朱振连 | Power-off self-closing control circuit for bistable electromagnetic valve |
| CN101566248B (en) * | 2009-05-15 | 2010-12-01 | 广州市煤气公司 | Fuel gas shutoff solenoid valve controller |
| CN102425701A (en) * | 2011-09-28 | 2012-04-25 | 于邦仲 | Driving device of double electric control valve and method thereof |
| CN104373661A (en) * | 2014-11-13 | 2015-02-25 | 刘洋 | Power-off protection type water flow control valve |
| CN106678418A (en) * | 2017-01-06 | 2017-05-17 | 宁波兴茂电子科技有限公司 | Waterproof and dustproof electromagnet for valve |
-
2003
- 2003-04-21 CN CN 03221378 patent/CN2618005Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744250B (en) * | 2004-08-30 | 2010-10-06 | 朱振连 | Power-off self-closing control circuit for bistable electromagnetic valve |
| CN101566248B (en) * | 2009-05-15 | 2010-12-01 | 广州市煤气公司 | Fuel gas shutoff solenoid valve controller |
| CN102425701A (en) * | 2011-09-28 | 2012-04-25 | 于邦仲 | Driving device of double electric control valve and method thereof |
| CN104373661A (en) * | 2014-11-13 | 2015-02-25 | 刘洋 | Power-off protection type water flow control valve |
| CN106678418A (en) * | 2017-01-06 | 2017-05-17 | 宁波兴茂电子科技有限公司 | Waterproof and dustproof electromagnet for valve |
| CN106678418B (en) * | 2017-01-06 | 2018-11-02 | 宁波兴茂电子科技有限公司 | A kind of valve control electromagnet of water proof and dust proof |
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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 |