CN202612782U - Double linkage seal vacuum electromagnetic valve - Google Patents

Abstract

A double linkage seal vacuum electromagnetic valve includes a valve body, a coil, a movable iron core, an upper rubber plug, an upper spring, an ejection pin, a return spring, an exhaust fixing seat and a lower rubber plug, wherein a work port, a gas inlet and an exhaust port are arranged on the valve body respectively; the coil is arranged at the top end inside the valve body; the movable iron core is sleeved with the inside of the coil; the upper rubber plug is sleeved with the inside of the movable iron core and corresponds to the gas inlet; the upper spring is sleeved with the outside of the movable iron core; the ejector pin is connected to the bottom of the movable iron core; the return spring is arranged at the bottom of the valve body; the exhaust fixing seat is sleeved to the top of the return spring; the lower rubber plug is arranged between the return spring and the exhaust fixing seat and corresponds to the exhaust port. The double linkage seal vacuum electromagnetic valve can enable an exhaust brake vacuum cylinder to rapidly respond to power on/off of the vacuum electromagnetic valve, and enable an exhaust brake device to be rapidly switched between opening and closing and achieve a good brake effect.

Description

Duplex motive sealing vacuum solenoid

Technical field

The utility model relates to a kind of solenoid valve, relates in particular to a kind of duplex motive sealing vacuum solenoid.

Background technique

Vacuum solenoid applies to gently block on the exhaust brake butterfly valve of auxiliary braking, is used to control the vacuum reservoir that links to each other with the exhaust brake butterfly valve.When vehicle needed auxiliary braking, exhaust braking can respond rapidly, when removing auxiliary braking; The quick closedown of exhaust braking ability, however the relief opening latus rectum of widely used vacuum valve is less in the market; Cause flow too small; Make that vacuum reservoir is longer resetting time, influences braking effect after the solenoid valve outage.

The model utility content

The purpose of the utility model is to provide a kind of duplex motive sealing vacuum solenoid, causes the flow snapshot of oneself to ring the technical problem of braking effect for a short time to solve the relief opening latus rectum that vacuum solenoid exists in the existing technology.

For achieving the above object; The utility model provides a kind of duplex motive sealing vacuum solenoid, comprising: valve body, coil, moving iron core, gluing are stifled, upper spring, knock pin, Returnning spring, exhaust fixed base and play glue block up, and are respectively arranged with working hole, suction port and relief opening on the valve body; Coil is arranged on the valve inner top; Moving iron core sleeve is connected to coil inside, and the stifled cover of gluing is connected to moving core interior and corresponding with suction port, and it is outside that the upper spring cover is connected to moving iron core; Knock pin is connected to moving iron core bottom; Returnning spring is arranged on valve body bottom, and the exhaust fixed seating is connected to the Returnning spring top, and following glue is stifled to be arranged between Returnning spring and the exhaust fixed base and corresponding with relief opening.

The beneficial effect of the utility model is: the utility model all is located at porting on the valve body; And employing linking mechanism; Comprise that the moving iron core and the gluing that communicate with suction port are stifled, exhaust fixed base that communicates with relief opening and following glue are stifled, and the knock pin that connects moving iron core and exhaust fixed base; Realized that through this kind structure upper-lower seal mouth interlock mode seals, overcome the little defective of solenoid valve extraction flow of existing exhaust structure.Simultaneously, porting adopts big latus rectum design, has improved flow.Therefore, the utility model can make the exhaust brake vacuum reservoir respond the break-make electricity of vacuum solenoid rapidly, makes exhaust braking between opening and closing, to switch fast, and braking effect is good.

Description of drawings

Fig. 1 is the structure sectional view of the utility model duplex motive sealing vacuum solenoid.

Embodiment

Below in conjunction with accompanying drawing, specify the utility model.

See also Fig. 1; A kind of duplex motive sealing vacuum solenoid comprises: valve body 1, coil 2, moving iron core 3, gluing are stifled 4, upper spring 5, knock pin 6, Returnning spring 7, exhaust fixed base 8 and play glue block up 9, are respectively arranged with working hole 10, suction port 11 and relief opening 12 on the valve body 1; Coil 2 is arranged on valve body 1 inner tip; Move iron core 3 covers and be connected to coil 2 inside, stifled 4 covers of gluing are connected to moving iron core 3 inside and corresponding with suction port 11, and it is outside that upper spring 5 covers are connected to moving iron 3 cores; Knock pin 6 is connected to moving iron core 3 bottoms; Returnning spring 7 is arranged on valve body 1 bottom, and exhaust fixed base 8 cover is connected to Returnning spring 7 tops, and following glue stifled 9 is arranged between Returnning spring 7 and the exhaust fixed base 8 and is corresponding with relief opening 12.

The working procedure of the utility model is following: when system need brake, the driver opened exhaust brake switch, the power connection of vacuum solenoid; Coil 2 energisings, moving iron core 3 are by adhesive, and gluing stifled 4 is risen thereupon; Suction port 11 and and working hole 10 between passage be opened, simultaneously, exhaust fixed base 8 under the effect of Returnning spring 7 by the top on; Following glue stifled 9 works, and relief opening 12 is closed with the passage of working hole 10, and the air of exhaust brake vacuum reservoir is drawn in the vacuum pump like this; The piston of exhaust brake vacuum reservoir begins action, exhaust braking valve work when degree of vacuum reaches specified value.When system need remove exhaust brake, as long as cut off the power supply of vacuum solenoid, coil 2 outages; Moving iron core 3 the effect of upper spring 5 under by the top under, gluing is blocked up 4 and is worked, suction port 11 and and working hole 10 between passage be closed; Simultaneously, by being backed down, following glue stifled 9 separates with valve body 1 exhaust fixed base 8 under the effect of knock pin 6; Relief opening 12 is opened with the passage of working hole 10, is full of atmosphere releasing exhaust brake in the exhaust brake vacuum reservoir thereby make.

More than the disclosed several specific embodiments that are merely the utility model, but the utility model is not limited thereto, any those skilled in the art can think variation, all should drop in the protection domain of the utility model.

Claims (1)

1. duplex motive sealing vacuum solenoid; It is characterized in that, comprising: valve body, coil, moving iron core, gluing are stifled, upper spring, knock pin, Returnning spring, exhaust fixed base and play glue block up, and are respectively arranged with working hole, suction port and relief opening on the said valve body; Said coil is arranged on said valve inner top; Said moving iron core sleeve is connected to said coil inside, and the stifled cover of said gluing is connected to said moving core interior and corresponding with said suction port, and it is outside that said upper spring cover is connected to said moving iron core; Said knock pin is connected to said moving iron core bottom; Said Returnning spring is arranged on said valve body bottom, and said exhaust fixed seating is connected to said Returnning spring top, and said glue down is stifled to be arranged between said Returnning spring and the said exhaust fixed base and corresponding with said relief opening.

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