CN203374900U - Electromagnetic valve with negative-pressure destructive backstop - Google Patents
Electromagnetic valve with negative-pressure destructive backstop Download PDFInfo
- Publication number
- CN203374900U CN203374900U CN201320395232.2U CN201320395232U CN203374900U CN 203374900 U CN203374900 U CN 203374900U CN 201320395232 U CN201320395232 U CN 201320395232U CN 203374900 U CN203374900 U CN 203374900U
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- valve seat
- valve
- water
- back pressure
- chamber
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Abstract
Provided is an electromagnetic valve with a negative-pressure destructive backstop. The electromagnetic valve can prevent backflow pollution, a valve A is arranged between a water supply chamber and a water outlet chamber, a back pressure chamber A is formed between a valve cover and a valve seat A, a valve seat B is positioned on the valve cover, a back pressure chamber B is arranged above the valve seat B, a valve seat C is arranged at the position of a water outlet of a valve body, the valve body is further connected with a casing with a water outlet channel, a venting opening and a valve seat D are arranged on the casing, the valve seat D is communicated with the venting opening, the negative-pressure destructive backstop is arranged between the valve seat D and the valve seat C, the backstop comprises a valve core, one end of the valve core is arranged on the valve seat C, the other end of the valve core is positioned on the valve seat D, a return spring is arranged between a middle separation plate of the valve core and a blocking platform arranged in the direction of the venting opening, a sealing gasket A and a sealing gasket B are arranged on one side and the other side of the middle separation plate respectively, the sealing gasket A corresponds to the valve seat C, the sealing gasket B corresponds to the valve seat D, a communicating hole is formed in the valve cover between the back pressure chamber B and the back pressure chamber A, and a through opening of the valve seat B is communicated with a water outlet channel of the casing. The electromagnetic valve is suitable for being used as a water supply valve.
Description
Technical field
The utility model relates to a kind of solenoid valve, especially relates to a kind of solenoid valve with the destructive non-return device of negative pressure.
Background technique
Water system can cause associated conduit vacuum or negative pressure state to occur because of the reason such as cut off the water, some valve in pipe-line system enters the pipeline of water supply direction because causing that without effective converse stopping mechanism the resident water siphon of water outlet direction refluxes in this case, when serious (as the water of washing plant with washing agent refluxes) may cause the pollution of water supply system.In traditional technology, official seal siphon reflux is arranged for effectively anti-siphon, the system that guarantees is not again leaked simultaneously, by being set, the one-way valve diaphragm seal that links realizes the mode of sealing, often cause the water flow pressure loss of pipe-line system excessive, in order to address this problem, a kind of anti-siphon device for flushing valve that the patent No. is 200620042501.7 has been proposed, it comprises an envelope pore film sheet, leachy diaphragm support, corrugated telescopic cover, ventilation support, Returnning spring, limited ring, O type circle, wherein diaphragm support props up envelope pore film sheet, corrugated telescopic cover is enclosed within on diaphragm support all the time, diaphragm support can move up and down in ventilation support, ventilation support is communicated with outside air.This device is compared with existing anti-siphon reflux, and the water flow pressure loss is little, be not easy to produce to leak, but this device construction is complicated with assembling simultaneously.
The entering water electromagnetic valve with anti-siphon means of the patent No. 201220238954.2, increase by an anti-siphon means in valve inleting water mouth position, this device is an one-way mechanism that the restriction current reflux, and the effect of anti-siphon, after long-term use is aging, just can't play in this independent mechanism.
Summary of the invention
The utility model will solve the anti-siphon backflow of current water supply piping system solenoid valve mechanism complex structure, and the problem of poor durability provides a kind of solenoid valve with the destructive non-return device of negative pressure of the present utility model for this reason.
For addressing the above problem, the technical solution adopted in the utility model be set valve body have water intake, water outlet and the water supply chamber connected with water intake, with the water-supplying chamber that water outlet connects, its special way is to be provided with following assemblying body:
There is valve seat A between water supply chamber and water-supplying chamber, be combined with barrier film on valve seat A, chimeric in the central hole of this barrier film have a diaphragm plate, be connected with valve gap on valve body, the valve gap end opening is withheld in the sealed department of barrier film periphery, make at valve gap and barrier film, form back pressure chamber A between diaphragm plate, the nearly periphery of diaphragm plate place has opened the effluent through hole, water supply chamber is communicated with back pressure chamber A by the effluent through hole, valve gap is provided with valve seat B, the upper electromagnetic valve component that coordinates of valve seat B, this electromagnetic valve component have electromagnetic coil and in be placed in the guide pin bushing of electromagnetic coil, be provided with iron core and piston in guide pin bushing, iron core and piston space are provided with spring, piston nose is connected with piston cap, this piston cap corresponding matching is in described valve seat B, be formed with back pressure chamber B between guide pin bushing lower end and piston cap and valve seat B, valve body is provided with valve seat C in the valve body water outlet, and valve body is connected with housing in a side of valve body water outlet, housing has exhalant canal, also be provided with ventilating hole and valve seat D on housing, the port of valve seat D and described ventilating hole connect, be provided with the destructive non-return device of negative pressure between the port of the port of valve seat D and valve seat C, the destructive non-return device of this negative pressure has spool, this spool one end is positioned at the port of valve seat C, spool the other end is positioned at the port of valve seat D, described spool has the central diaphragm radially extended out, be provided with returning spring at central diaphragm and the set gear interstation of described ventilating hole direction on spool, one side of central diaphragm outer rim and opposite side respectively are embedded with seal washer A and seal washer B, seal washer A is corresponding to described valve seat C, and can involution under described returning spring effect in valve seat C, seal washer B is corresponding to described valve seat D, and when overcoming the interaction energy involution of described returning spring in valve seat D, valve gap offers intercommunicating pore between back pressure chamber B and back pressure chamber A, and the port of valve seat B is communicated with the exhalant canal on housing through flow channel.
Assemblying body described in the utility model can have more than two or two.
The utility model is because housing is provided with ventilating hole and valve seat D, the port of valve seat D and ventilating hole connect, be provided with the destructive non-return device of negative pressure between the port of the port of valve seat D and valve seat C, spool one end of this non-return device is positioned at the port of valve seat C, the other end is positioned at the port of valve seat D, the gear interstation of the central diaphragm of spool and ventilating hole direction is provided with returning spring, one side of central diaphragm outer rim and opposite side respectively are embedded with seal washer A and seal washer B, seal washer A is corresponding to valve seat C, seal washer B is corresponding to valve seat D, like this, when the water supply direction pipeline produces negative pressure, air enters through ventilating hole, promoting spool is pressed in seal ring A on valve seat C, closed valve seat C, the water that prevents the utility model exhalant canal direction refluxes, when the sealing mechanism of valve seat C lost efficacy, air enters housing by ventilating hole, then enters valve body by valve seat C, destroys the negative pressure in valve seat C water inlet direction zone, makes the obstructed backflow of water of exhalant canal direction, plays the effect that negative pressure is destroyed.The utility model also, owing to having back pressure chamber A and back pressure chamber B, offers intercommunicating pore between back pressure chamber B and back pressure chamber A, and port and the exhalant canal of the valve seat B corresponding with back pressure chamber B lead to,
Therefore, with traditional with water-supplying chamber, leading to and compare, back pressure chamber A, the pressure drop of back pressure chamber B earial drainage are larger, solenoid valve is opened rapider.
The utility model combines negative pressure destructor non-return device and solenoid valve, compact structure, and volume is little, applied range.
The accompanying drawing explanation
Fig. 1 is stereogram of the present utility model;
Fig. 2 is Fig. 1 F direction view;
Fig. 3 is Fig. 2 A-A sectional view;
Fig. 4 is that the utility model structure is torn folding figure open.
Mark and counterpart in figure: 1 valve body, 101 water intakes, 102 water outlets, 103 water supply chambers, 104 water-supplying chamber, 105 valve seat A, 106 back pressure chamber A, 107 valve seat C, 2 housings, 201 exhalant canals, 202 valve seat D, 203 ventilating holes, 3 valve gaps, 301 valve gap end openings, 302 valve seat B, 304 back pressure chamber B, 305 intercommunicating pores, 306 flow channels, 4 barrier films, 401 sealed departments, 5 diaphragm plates, 502 effluent through holes, 6 piston caps, 7 pistons, 8 springs, 9 electromagnetic coils, 10 O type circles, 11 packing rings, the destructive non-return device of 12 negative pressure, 1201 spools, 1202 returning springs, 1203 seal washer A, 1204 seal washer B, 1205 central diaphragms, 13 guide pin bushings, 14 iron cores.
Embodiment
Embodiment one
A kind of solenoid valve with the destructive non-return device of negative pressure, the water-supplying chamber (104) that the valve body of this solenoid valve (1) has water intake (101), water outlet (102) and the water supply chamber (103) connected with water intake, connects with water outlet, and be provided with following assemblying body:
There is valve seat A(105 between water supply chamber and water-supplying chamber), be combined with barrier film (4) on valve seat A, chimeric in the central hole of this barrier film have a diaphragm plate (5), be connected with valve gap (3) on valve body, valve gap end opening (301) is withheld the sealed department (401) in the barrier film periphery, make at valve gap and barrier film, form back pressure chamber A(106 between diaphragm plate), the nearly periphery of diaphragm plate place has opened effluent through hole (502), water supply chamber is communicated with back pressure chamber A current by the effluent through hole, valve gap is provided with valve seat B(302), the upper electromagnetic valve component that coordinates of valve seat B, this electromagnetic valve component have electromagnetic coil (9) and in be placed in the guide pin bushing (13) of electromagnetic coil, be provided with iron core (14) and piston (7) in guide pin bushing, iron core and piston space are provided with spring (8), piston nose is connected with piston cap (6), this piston cap corresponding matching is in described valve seat B, be formed with back pressure chamber B(304 between guide pin bushing lower end and piston cap and valve seat B), guide pin bushing bottom outer wall and valve cover chamber are provided with O type circle (10) and the packing ring (11) sealed, valve body is provided with valve seat C(107 in the valve body water outlet), and valve body is connected with housing (2) in a side of valve body water outlet, housing has exhalant canal (201), also be provided with ventilating hole (203) and valve seat D(202 on housing), the port of valve seat D and described ventilating hole connect, be provided with the destructive non-return device (12) of negative pressure between the port of the port of valve seat D and valve seat C, the destructive non-return device of this negative pressure has spool (1201), this spool one end is positioned at the port of valve seat C, spool the other end is positioned at the port of valve seat D, described spool has the central diaphragm (1205) radially extended out, the set gear interstation of central diaphragm and described ventilating hole direction is provided with returning spring (1202), one side and the opposite side of central diaphragm outer rim respectively are embedded with seal washer A(1203) and seal washer B(1204), seal washer A is corresponding to described valve seat C, and can involution under described returning spring effect in valve seat C, seal washer B is corresponding to described valve seat D, and when overcoming the interaction energy involution of described returning spring in valve seat D, valve gap is at back pressure chamber B(304) and back pressure chamber A(106) between offer intercommunicating pore (305), and the port of valve seat B is communicated with the exhalant canal (201) on housing through flow channel (306).
The water inlet of this solenoid valve (stream is open-minded) action is as follows: electromagnetic coil 9 energisings, coil produces electromagnetic force and makes piston 7 and iron core 14 adhesives, driving piston cap 6 moves to breaking away from valve seat B302 direction, valve seat B opens, because the port of valve seat B is communicated with the exhalant canal (201) on housing through flow channel (306), and back pressure chamber B(304) and back pressure chamber A(106) between offer intercommunicating pore (305), therefore the pressure in back pressure chamber A106 and back pressure chamber B304 is released, the pressure of water supply chamber 103 is greater than the pressure of back pressure chamber A, by barrier film 4 jack-up, open valve seat A105, the water of water supply chamber 103 enters water-supplying chamber 104, water-supplying chamber's pressure rise, back down the spool 1201 of the destructive non-return device of negative pressure together with the seal washer A1203 be sealed on valve seat C, makes spool 1201 to the motion of valve seat D202 direction, seal washer B1204 is pressed in to valve seat D202 upper, makes valve seat D sealing.The water of water-supplying chamber 104 flows out from the exhalant canal 201 of housing 2.
The sealing of this solenoid valve (stream is closed) action is as follows: the electromagnetic coil outage, under spring 8 effects, piston 7 resets together with piston cap 6, seal valve seat B302, by 502 water inlets of effluent through hole, back pressure chamber A106, back pressure chamber B304 pressure rise, be pressed in valve seat A105 by barrier film 4 upper, seal valve seat A; Water-supplying chamber 104 loses current and supplements, pressure drop; The returning spring 1202 of the destructive non-return device of negative pressure promotes spool 1201 to the motion of valve seat C107 direction, and it is upper that seal washer A1203 is pressed in valve seat C107, valve seat C sealing, water valve sealing.
Check and the negative pressure destruction of the destructive non-return device 12 of negative pressure are: when the influent side pipeline produces negative pressure, under acting in the lump, returning spring 1202 and ventilating hole 203 air promote spool 1201 motions, seal ring A1203 is pressed on valve seat C107, make valve seat C sealing, the water of exhalant canal 201 directions can not be back to water-supplying chamber 104; When the sealing at valve seat C107 place was lost efficacy, air enters by ventilating hole 203, then enters by valve seat C, destroys the negative pressure of valve seat C water-supplying chamber side, makes the water of exhalant canal 201 directions can not be back to water-supplying chamber, reaches the effect that negative pressure is destroyed.
Embodiment two
Solenoid valve with the destructive non-return device of negative pressure, have two as above routine described assemblying bodys, and other structures are identical with upper example.
Claims (2)
1. the solenoid valve with the destructive non-return device of negative pressure, the valve body of this solenoid valve (1) have water intake (101), water outlet (102) and the water supply chamber (103) connected with water intake, with the water-supplying chamber (104) that water outlet connects, it is characterized in that being provided with following assemblying body:
There is valve seat A(105 between water supply chamber and water-supplying chamber), be combined with barrier film (4) on valve seat A, chimeric in the central hole of this barrier film have a diaphragm plate (5), be connected with valve gap (3) on valve body, valve gap end opening (301) is withheld the sealed department (401) in the barrier film periphery, make at valve gap and barrier film, form back pressure chamber A(106 between diaphragm plate), the nearly periphery of diaphragm plate place has opened effluent through hole (502), water supply chamber is communicated with back pressure chamber A by the effluent through hole, valve gap is provided with valve seat B(302), the upper electromagnetic valve component that coordinates of valve seat B, this electromagnetic valve component have electromagnetic coil (9) and in be placed in the guide pin bushing (13) of electromagnetic coil, be provided with iron core (14) and piston (7) in guide pin bushing, iron core and piston space are provided with spring (8), piston nose is connected with piston cap (6), this piston cap corresponding matching is in described valve seat B, be formed with back pressure chamber B(304 between guide pin bushing lower end and piston cap and valve seat B), valve body is provided with valve seat C(107 in the valve body water outlet), and valve body is connected with housing (2) in a side of valve body water outlet, housing has exhalant canal (201), also be provided with ventilating hole (203) and valve seat D(202 on housing), the port of valve seat D and described ventilating hole connect, be provided with the destructive non-return device (12) of negative pressure between the port of the port of valve seat D and valve seat C, the destructive non-return device of this negative pressure has spool (1201), this spool one end is positioned at the port of valve seat C, spool the other end is positioned at the port of valve seat D, described spool has the central diaphragm (1205) radially extended out, be provided with returning spring (1202) at central diaphragm and the set gear interstation of described ventilating hole direction on spool, one side and the opposite side of central diaphragm outer rim respectively are embedded with seal washer A(1203) and seal washer B(1204), seal washer A is corresponding to described valve seat C, and can involution under described returning spring effect in valve seat C, seal washer B is corresponding to described valve seat D, and when overcoming the interaction energy involution of described returning spring in valve seat D, valve gap is at back pressure chamber B(304) and back pressure chamber A(106) between offer intercommunicating pore (305), and the port of valve seat B is communicated with the exhalant canal (201) on housing through flow channel (306).
2. solenoid valve as claimed in claim 1, is characterized in that described assemblying body has more than two or two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395232.2U CN203374900U (en) | 2013-07-03 | 2013-07-03 | Electromagnetic valve with negative-pressure destructive backstop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395232.2U CN203374900U (en) | 2013-07-03 | 2013-07-03 | Electromagnetic valve with negative-pressure destructive backstop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374900U true CN203374900U (en) | 2014-01-01 |
Family
ID=49837429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320395232.2U Withdrawn - After Issue CN203374900U (en) | 2013-07-03 | 2013-07-03 | Electromagnetic valve with negative-pressure destructive backstop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374900U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352997A (en) * | 2013-07-03 | 2013-10-16 | 杭州神林电子有限公司 | Electromagnetic valve with negative pressure destructive backstop |
| CN103899765A (en) * | 2014-04-02 | 2014-07-02 | 苏州沃特节水产品有限公司 | Valve block for water inlet valve of water tank |
| CN108869841A (en) * | 2017-05-13 | 2018-11-23 | 杭州神林电子有限公司 | Electromagnetic water inlet valve |
| US11306844B2 (en) | 2017-06-26 | 2022-04-19 | Lixil Corporation | Pilot solenoid valve |
-
2013
- 2013-07-03 CN CN201320395232.2U patent/CN203374900U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352997A (en) * | 2013-07-03 | 2013-10-16 | 杭州神林电子有限公司 | Electromagnetic valve with negative pressure destructive backstop |
| CN103899765A (en) * | 2014-04-02 | 2014-07-02 | 苏州沃特节水产品有限公司 | Valve block for water inlet valve of water tank |
| CN108869841A (en) * | 2017-05-13 | 2018-11-23 | 杭州神林电子有限公司 | Electromagnetic water inlet valve |
| US11306844B2 (en) | 2017-06-26 | 2022-04-19 | Lixil Corporation | Pilot solenoid valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20160427 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |