CN103352997B - With the solenoid valve of negative pressure destructive backstop - Google Patents
With the solenoid valve of negative pressure destructive backstop Download PDFInfo
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- CN103352997B CN103352997B CN201310278585.9A CN201310278585A CN103352997B CN 103352997 B CN103352997 B CN 103352997B CN 201310278585 A CN201310278585 A CN 201310278585A CN 103352997 B CN103352997 B CN 103352997B
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Abstract
Can prevent the solenoid valve of the band negative pressure destructive backstop of backflow pollution, have valve seat A between water supply chamber and water-supplying chamber, form back pressure chamber A between valve gap and valve seat A, valve gap is provided with valve seat B, has back pressure chamber B above valve seat B; Valve body is provided with valve seat C in water outlet and is connected with the housing with exhalant canal, housing is provided with ventilating hole and valve seat D, valve seat D and ventilating hole through, negative pressure destructive backstop is provided with between valve seat D and valve seat C, this non-return device has spool, spool one end is positioned at valve seat C, the spool the other end is positioned at valve seat D, returning spring is provided with between the central diaphragm of spool and the gear platform set by ventilating hole direction, central diaphragm side and opposite side are respectively embedded with seal washer A and seal washer B, seal washer A corresponds to valve seat C, seal washer B and corresponds to 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.The present invention is applicable to making feed valve.<!--1-->
Description
Technical field
The present invention relates to a kind of solenoid valve, especially relate to a kind of solenoid valve with negative pressure destructive backstop.
Background technique
Water system can cause associated conduit to occur vacuum or negative pressure state because of the reason such as to cut off the water, in this case some valve in pipe-line system enters the pipeline of water supply direction because the resident water siphon in water outlet direction can be caused to reflux without effective converse stopping mechanism, time serious (as the water of washing plant with washing agent refluxes) pollution of water supply system may be caused.In the conventional technology, there is official seal siphon reflux in order to effective anti-siphon, ensure again that system is not leaked simultaneously, by arrange an one-way valve link one diaphragm seal realize sealing mode, the water flow pressure of pipe-line system is often caused to lose excessive, a kind of anti-siphon device for flushing valve that the patent No. is 200620042501.7 is proposed in order to address this problem, 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 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 water flow pressure loss is little, is not easy to produce to leak simultaneously, but this device structure is complicated with assembling.
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 the one-way mechanism of restriction current backflow, and the effect of anti-siphon, after Long-Time Service is aging, just cannot play in this independent mechanism.
Summary of the invention
The present invention will solve current water supply piping system solenoid valve anti-siphon backflow mechanism complex structure, and the problem of poor durability, provides a kind of solenoid valve with negative pressure destructive backstop of the present invention for this reason.
For solving the problem, the technical solution used in the present invention is that set valve body has water intake, water outlet and the water supply chamber through with water intake, the water-supplying chamber through with water outlet, and its special way is provided with following assemblying body:
There is between water supply chamber and water-supplying chamber valve seat A, valve seat A is combined with barrier film, chimeric in the central hole of this barrier film have diaphragm plate, valve body is connected with valve gap, valve gap end opening withholds the sealed department in barrier film periphery, make at valve gap and barrier film, back pressure chamber A is formed between diaphragm plate, the nearly periphery place of diaphragm plate has opened effluent through hole, water supply chamber is communicated with back pressure chamber A by effluent through hole, valve gap is provided with valve seat B, valve seat B coordinates electromagnetic valve component, this electromagnetic valve component has electromagnetic coil and the interior guide pin bushing being placed on electromagnetic coil, iron core and piston is provided with 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, back pressure chamber B is formed in guide pin bushing lower end with between piston cap and valve seat B, valve body is provided with valve seat C in valve body water outlet, and valve body is connected with housing in the side of valve body water outlet, housing has exhalant canal, housing is also provided with ventilating hole and valve seat D, port and the described ventilating hole of valve seat D are through, negative pressure destructive backstop is provided with between the port of valve seat D and the port of valve seat C, this negative pressure destructive backstop has spool, this spool one end part is in 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 that radial direction extends out, spool is provided with returning spring between the gear platform set by central diaphragm and described ventilating hole direction, the side of central diaphragm outer rim and opposite side are respectively embedded with seal washer A and seal washer B, seal washer A corresponds to described valve seat C, and under described returning spring effect can involution in valve seat C, seal washer B corresponds 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 of the present invention can have more than two pieces or two pieces.
The present invention is provided with ventilating hole and valve seat D due to housing, port and the ventilating hole of valve seat D are through, negative pressure destructive backstop is provided with between the port of valve seat D and the port of valve seat C, the spool one end part of this non-return device is in the port of valve seat C, the other end is positioned at the port of valve seat D, returning spring is provided with between the central diaphragm of spool and the gear platform in ventilating hole direction, the side of central diaphragm outer rim and opposite side are respectively embedded with seal washer A and seal washer B, seal washer A corresponds to valve seat C, seal washer B corresponds to valve seat D, like this, when water supply direction pipeline produces negative pressure, air enters through ventilating hole, promoting spool is pressed on valve seat C by seal ring A, closed valve seat C, prevent the water in exhalant canal direction of the present invention from refluxing, when the sealing mechanism of valve seat C lost efficacy, air entered housing by ventilating hole, then entered valve body by valve seat C, destroyed the negative pressure in valve seat C water inlet region, direction, made the obstructed backflow of the water in exhalant canal direction, play the effect that negative pressure is destroyed.The present invention 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 lead to water-supplying chamber compared with, back pressure chamber A, the pressure drop of back pressure chamber B earial drainage are larger, and solenoid valve is opened rapider.
Negative pressure destructor non-return device and solenoid valve combine by the present invention, compact structure, and volume is little, applied range.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is Fig. 1 F direction view;
Fig. 3 is Fig. 2 A-A sectional view;
Fig. 4 is that structure of the present invention tears 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, 10O type circle, 11 packing rings, 12 negative pressure destructive backstop, 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 negative pressure destructive backstop, the valve body (1) of this solenoid valve has water intake (101), water outlet (102) and the water supply chamber through with water intake (103), the water-supplying chamber (104) through with water outlet, and is provided with following assemblying body:
There is valve seat A(105) between water supply chamber and water-supplying chamber, valve seat A is combined with barrier film (4), chimeric in the central hole of this barrier film have diaphragm plate (5), valve body is connected with valve gap (3), valve gap end opening (301) withholds the sealed department (401) in barrier film periphery, make at valve gap and barrier film, back pressure chamber A(106 is formed) between diaphragm plate, the nearly periphery place of diaphragm plate has opened effluent through hole (502), water supply chamber is by effluent through hole and back pressure chamber A water communication, valve gap is provided with valve seat B(302), valve seat B coordinates electromagnetic valve component, this electromagnetic valve component has electromagnetic coil (9) and the interior guide pin bushing (13) being placed on electromagnetic coil, iron core (14) and piston (7) is provided with 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, back pressure chamber B(304 is formed with) in guide pin bushing lower end with between piston cap and valve seat B, guide pin bushing bottom outer wall and valve cover chamber are provided with the O type circle (10) and packing ring (11) that seal, valve body is provided with valve seat C(107 in valve body water outlet), and valve body is connected with housing (2) in the side of valve body water outlet, housing has exhalant canal (201), housing is also provided with ventilating hole (203) and valve seat D(202), port and the described ventilating hole of valve seat D are through, negative pressure destructive backstop (12) is provided with between the port of valve seat D and the port of valve seat C, this negative pressure destructive backstop has spool (1201), this spool one end part is in 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) that radial direction extends out, returning spring (1202) is provided with between central diaphragm and the gear platform set by described ventilating hole direction, the side of central diaphragm outer rim and opposite side are respectively embedded with seal washer A(1203) and seal washer B(1204), seal washer A corresponds to described valve seat C, and under described returning spring effect can involution in valve seat C, seal washer B corresponds 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).
Water inlet (stream the is open-minded) action of this solenoid valve is as follows: electromagnetic coil 9 is energized, coil generating electromagnetic power makes piston 7 and iron core 14 adhesive, piston cap 6 is driven to move to disengaging 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 increase, the spool 1201 backing down negative pressure destructive backstop, together with the seal washer A1203 be sealed on valve seat C, makes spool 1201 to the motion of valve seat D202 direction, is pressed on valve seat D202 by seal washer B1204, valve seat D is closed.The water of water-supplying chamber 104 flows out from the exhalant canal 201 of housing 2.
Sealing (stream closedown) action of this solenoid valve is as follows: electromagnetic coil power-off, under spring 8 acts on, piston 7 resets together with piston cap 6, seal valve seat B302, intake by effluent through hole 502, back pressure chamber A106, back pressure chamber B304 pressure increase, be pressed in barrier film 4 on valve seat A105, seal valve seat A; Water-supplying chamber 104 loses current and supplements, pressure drop; The returning spring 1202 of negative pressure destructive backstop promotes spool 1201 to the motion of valve seat C107 direction, and seal washer A1203 is pressed on valve seat C107, and valve seat C seals, water valve sealing.
Check and the negative pressure destruction of negative pressure destructive backstop 12 are: when influent side pipeline produces negative pressure, under returning spring 1202 and ventilating hole 203 air act in the lump, promote spool 1201 move, seal ring A1203 is pressed on valve seat C107, valve seat C is sealed, and the water in exhalant canal 201 direction can not be back to water-supplying chamber 104; When the closed inefficacy at valve seat C107 place, air is entered by ventilating hole 203, then is entered by valve seat C, destroys the negative pressure of valve seat C water-supplying chamber side, makes the water in exhalant canal 201 direction not be back to water-supplying chamber, reaches the effect that negative pressure is destroyed.
Embodiment two
With the solenoid valve of negative pressure destructive backstop, have two assemblying bodys as above described in example, other structures are identical with upper example.
Claims (2)
1. the solenoid valve with negative pressure destructive backstop, the valve body (1) of this solenoid valve has water intake (101), water outlet (102) and the water supply chamber through with water intake (103), the water-supplying chamber (104) through with water outlet, 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, valve seat A is combined with barrier film (4), chimeric in the central hole of this barrier film have diaphragm plate (5), valve body is connected with valve gap (3), valve gap end opening (301) withholds the sealed department (401) in barrier film periphery, make at valve gap and barrier film, back pressure chamber A(106 is formed) between diaphragm plate, the nearly periphery place of diaphragm plate has opened effluent through hole (502), water supply chamber is communicated with back pressure chamber A by effluent through hole, valve gap is provided with valve seat B(302), valve seat B coordinates electromagnetic valve component, this electromagnetic valve component has electromagnetic coil (9) and the interior guide pin bushing (13) being placed on electromagnetic coil, iron core (14) and piston (7) is provided with 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, back pressure chamber B(304 is formed with) in guide pin bushing lower end with between piston cap and valve seat B, valve body is provided with valve seat C(107 in valve body water outlet), and valve body is connected with housing (2) in the side of valve body water outlet, housing has exhalant canal (201), housing is also provided with ventilating hole (203) and valve seat D(202), port and the described ventilating hole of valve seat D are through, negative pressure destructive backstop (12) is provided with between the port of valve seat D and the port of valve seat C, this negative pressure destructive backstop has spool (1201), this spool one end part is in 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) that radial direction extends out, spool is provided with returning spring (1202) between the gear platform set by central diaphragm and described ventilating hole direction, the side of central diaphragm outer rim and opposite side are respectively embedded with seal washer A(1203) and seal washer B(1204), seal washer A corresponds to described valve seat C, and under described returning spring effect can involution in valve seat C, seal washer B corresponds 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 pieces or two pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278585.9A CN103352997B (en) | 2013-07-03 | 2013-07-03 | With the solenoid valve of negative pressure destructive backstop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310278585.9A CN103352997B (en) | 2013-07-03 | 2013-07-03 | With the solenoid valve of negative pressure destructive backstop |
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| Publication Number | Publication Date |
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| CN103352997A CN103352997A (en) | 2013-10-16 |
| CN103352997B true CN103352997B (en) | 2016-04-27 |
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| CN201310278585.9A Active CN103352997B (en) | 2013-07-03 | 2013-07-03 | With the solenoid valve of negative pressure destructive backstop |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990116A (en) * | 2018-01-02 | 2019-07-09 | 杭州神林电子有限公司 | A kind of solenoid valve |
| CN109357063B (en) * | 2018-12-20 | 2024-05-24 | 宁波展鹰智能卫浴科技有限公司 | Electromagnetic valve device with backflow prevention and automatic dirt isolation functions |
| CN112098073B (en) * | 2020-08-28 | 2021-11-09 | 清华大学 | Method and device for detecting cold-state check performance of check combined valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101363550B (en) * | 2007-08-06 | 2011-09-28 | 浙江世进水控股份有限公司 | Check valve structure |
| DE102008062301A1 (en) * | 2007-12-20 | 2009-06-25 | Robert Buck | Inclined seat-standard backflow preventer for use in e.g. central water supply plant, has guide pin extending from valve seat in valve opening direction and entering into receiving guide or guide sleeve, which is component of valve cover |
| CN201310638Y (en) * | 2008-12-17 | 2009-09-16 | 宁波华成阀门有限公司 | Pilot-operated magnetic valve |
| CN201606560U (en) * | 2010-03-09 | 2010-10-13 | 宁波华成阀门有限公司 | Pilot electromagnetic valve |
| CN102537435B (en) * | 2012-02-27 | 2013-09-18 | 宁波华成阀门有限公司 | Anti-siphon backflow guide-type electromagnetic valve |
| CN202674413U (en) * | 2012-05-25 | 2013-01-16 | 金华市宏昌电器有限公司 | Water inflow solenoid valve with anti-siphon device |
| CN203374900U (en) * | 2013-07-03 | 2014-01-01 | 杭州神林电子有限公司 | Electromagnetic valve with negative-pressure destructive backstop |
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