CN2811695Y

CN2811695Y - Two-way solenoid valve

Info

Publication number: CN2811695Y
Application number: CN 200520073779
Authority: CN
Inventors: 周毕华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-21
Filing date: 2005-07-21
Publication date: 2006-08-30
Anticipated expiration: 2015-07-21

Abstract

The utility model relates to a two-way electromagnetic valve, which comprises an electromagnetic coil, a valve body provided with a valve cavity, a liquid inlet cavity and a liquid outlet cavity, an iron core, a valve rod, a valve core, a spring and a rubber ring, wherein the valve core is directly connected with the lower end of the valve rod and the spring is arranged by pressure on the valve rod in the valve cavity between the valve core and the lower end of the iron core. Therefore, the valve core can be directly controlled by an electromagnet through the valve rod to become a once opened valve core and the spring with bigger pressure is used. Therefore, the opening and closing of the valve has nothing to do with the existence of media and the flow direction and the valve can be opened and closed in two ways. The utility model can be directly arranged on a pipeline, wherein the medium pressure at both ends of the pipeline is repeatedly inverted. When the utility model is used as an ordinary electromagnetic valve, the installation direction does not need to be considered. The utility model has the advantages of simple and reasonable structure, convenient installation and use, etc.

Description

Bidirectional electromagnetic valve

Technical field

The utility model relates to a kind of solenoid valve, and the particularly a kind of solenoid valve that all can cut out and open when forward flow or the reverse flow medium of being fit to belongs to valve field.

Background technique

Existing solenoid valve, spool close main dependence spring force and input end medium pressure to it, because the elastic force of valve rod spring is very little, when the pressure of output terminal just the phenomenon that flows backwards can occur during greater than the pressure of input end, so can not oppositely install, more can not be inverted repeatedly on the pipeline of (be media flow direction need frequent conversion) and install and use at the pressure medium at valve two ends.Again because valve rod and spool are two parts separately, after valve rod was upwards picked up by iron core, input end also needed medium to have certain pressure just can make spool upwards and Open valve is also referred to as the spool that secondary is opened.In order to solve the refluence phenomenon, No. 85201815 patent disclosures a kind of unidirectional electrical magnet valve, mainly be to have set up pair valve seat and non-return valve core at the outlet side of valve body, being equivalent to has increased a safety check at output terminal, though can solve medium refluence phenomenon, but can not oppositely install and use, can not on the inverted repeatedly pipeline of the pressure medium at valve two ends, install and use, and structure be also than general solenoid valve complexity.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiency of above-mentioned existing solenoid valve, design a kind of bidirectional electromagnetic valve simple and reasonable, easy to install, applied widely that need not pressure medium and install and use on the inverted repeatedly pipeline of the pressure medium at valve two ends.

Bidirectional electromagnetic valve of the present utility model mainly is on the basis of general solenoid valve, and the spool that secondary is opened changes the spool of once opening into, and suitably improves spring pressure.Its structure comprises electromagnetic coil, be provided with valve pocket and admission chamber and go out valve body, iron core, valve rod, spool, spring and the rubber ring of sap cavity, described electromagnetic coil is contained in iron core top, mandrel lower is contained on the valve pocket of valve body, rubber ring is fitted between mandrel lower and the valve pocket, valve rod top is contained in the cavity of iron core, spool is contained in the admission chamber of valve body and goes out between the sap cavity and be sealed on out on the liquid entering hole of sap cavity, spool wherein directly is connected with the lower end of valve rod, on the valve rod in the valve pocket of pressure mounting of the spring between spool and iron core lower end.

Bidirectional electromagnetic valve of the present utility model, because spool directly is connected with the valve rod lower end, make spool directly be subjected to the control of electromagnet by valve rod, at ordinary times, spool will go out the liquid entering hole capping throttle down of sap cavity because of the pressure of spring, during the electromagnetic coil energising, iron core upwards picks up valve rod, makes spool overcome that spring pressure moves upward with valve rod and the liquid entering hole that leaves out sap cavity makes valve opening, so, valve opening and media independent.Be contained in the bigger valve pocket in space because of spring again, be convenient to select for use static pressure to be equal to or greater than the compression helical spring of medium pressure, can directly on the inverted repeatedly pipeline of the pressure medium at two ends, install and use, when doing the general solenoid valve use, can consider its installation direction, have advantages such as simple and reasonable, easy to install, applied widely.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

Referring to accompanying drawing, 1 among the figure is electromagnetic coil, the 2nd, and iron core, the 3rd, valve rod, the 4th, rubber ring, the 5th, valve body, the 6th, valve pocket, the 7th, spring, the 8th, spool, the 9th, admission chamber, the 10th, go out sap cavity.Described electromagnetic coil 1 is contained in iron core 2 tops, iron core 2 bottoms are installed on the valve pocket 6 of valve body 5 through screw thread, rubber ring 4 is fitted between mandrel lower and the valve pocket and seals, the top of valve rod 3 is contained in the cavity of iron core 2 and can moves up and down, spool 8 is contained in the admission chamber 9 of valve body 5 and goes out between the sap cavity 10 and be sealed on out on the liquid entering hole of sap cavity 10, described spool 8 directly is connected with the lower end of valve rod 3, and spring 7 is fitted on the valve rod 3 in the valve pocket 6 between spool 8 and iron core 2 lower ends.Because spring 7 is mounted in the bigger valve pocket in space 6, is convenient to select for use static pressure to be equal to or greater than the compression helical spring of medium pressure.Because spool directly is connected with valve rod, make spool directly be subjected to the control of electromagnet to become the spool of once opening by valve rod, and the bigger spring of working pressure, so the opening and closing of valve and medium have not and flow direction has nothing to do and the energy two-way switch.Can directly on the inverted repeatedly pipeline of the pressure medium at two ends, install and use, when doing the general solenoid valve use, can consider its installation direction, have advantages such as simple and reasonable, easy to install, applied widely.

Claims

1, a kind of bidirectional electromagnetic valve, comprise electromagnetic coil, be provided with valve pocket and admission chamber and go out valve body, iron core, valve rod, spool, spring and the rubber ring of sap cavity, described electromagnetic coil is contained in iron core top, mandrel lower is contained on the valve pocket of valve body, rubber ring is fitted between mandrel lower and the valve pocket, valve rod top is contained in the cavity of iron core, spool is contained in the admission chamber of valve body and goes out between the sap cavity and be sealed on out on the liquid entering hole of sap cavity, it is characterized in that spool directly is connected with the lower end of valve rod, on the valve rod in the valve pocket of pressure mounting of the spring between spool and iron core lower end.

2, bidirectional electromagnetic valve as claimed in claim 1 is characterized in that described spring is a compression helical spring, and its static pressure is equal to or greater than medium pressure.