CN203146147U

CN203146147U - Vacuum electromagnetic regulating valve with adjustable saddle

Info

Publication number: CN203146147U
Application number: CN2013201529920U
Authority: CN
Inventors: 陈凯
Original assignee: Wuxi Longsheng Technology Co Ltd
Current assignee: Wuxi Longsheng Technology Co Ltd
Priority date: 2013-03-29
Filing date: 2013-03-29
Publication date: 2013-08-21
Anticipated expiration: 2023-03-29

Abstract

The utility model discloses a vacuum electromagnetic regulating valve with an adjustable saddle. The vacuum electromagnetic regulating valve comprises a valve body and a valve cover, an electromagnetic coil is arranged in the valve body, a valve core which vertically moves in the valve body under the effect of magnetic force generated by the electromagnetic coil is arranged in the center of the electromagnetic coil, the saddle is arranged below the valve core, the saddle is arranged in the valve body through a saddle sleeve, the outer wall of the saddle sleeve is assembled with the inner wall of the valve body in an interference fit mode, and the saddle is located in the center of the saddle sleeve and in threaded connection with the inner wall of the saddle sleeve. An air nozzle is arranged in the valve cover, the air nozzle and the valve core share one central axis, and the air nozzle is communicated with a vacuum tube. The vacuum electromagnetic regulating valve accurately adjusts output vacuum degrees by changing the distance between the saddle and the valve core, consistency between output vacuum degree values and target values can be effectively guaranteed, and the percent of pass of production of the vacuum electromagnetic regulating valve is improved.

Description

The adjustable vacuum electromagnetic modulating valve of saddle

Technical field

The utility model belongs to engine exhaust emission control technique field, particularly the vacuum electromagnetic modulating valve in a kind of engine exhaust emission gas recirculation system.

Background technique

The vacuum electromagnetic modulating valve is mainly used in regulating the exhaust gas flow in the recirculating system as a kind of modulating valve commonly used in the engine exhaust-gas recirculating system (egr system).Its working principle be by the different duty of electromagnetic coil voltage in the regulation valve body (in a string desirable pulse interval sequence, the ratio in the endurance of positive pulse and total cycle of pulse) control the position of spool in valve body, and then regulate the degree of vacuum size, realize the control of valve opening size.

Existing vacuum electromagnetic modulating valve mainly comprises valve body and valve gap, and valve body comprises valve seat, is provided with electromagnetic coil in the valve seat, and the center of electromagnetic coil also is that the center of valve body is provided with spool, and the below of spool is provided with the saddle that is installed in the valve seat bottom by cover plate; Valve gap is provided with internal cavities, is provided with the copper pin in the internal cavities, the concentricity axis of copper pin and spool.

Its working procedure is: when electromagnetic coil gets when electric, spool moves downward under the effect of electromagnetic force, caulking gum between spool and the copper pin also breaks away from the copper pin gradually along with the motion of spool, the valve gap internal cavities is increasing between the degree of vacuum under the suction of vacuum tube, thereby in internal cavities, produce negative pressure, the electromagnetic force that negative pressure and coil produce balances each other, the distance on copper pin bottom to spool top is kept relative stability, i.e. the exportable corresponding degree of vacuum of voltage that applies with the electromagnetic coil two ends.

Owing to assemble by interference fit between saddle and the cover plate, so can't realize the adjusting of relative position between saddle and cover plate, can only determine the degree of vacuum error of output in the assembly process by the position of copper pin in the valve gap internal cavities; Namely be pressed into the degree of depth of valve gap when big when the copper pin, the distance between copper pin bottom and the spool top can relative increase, and correspondingly the degree of vacuum exported of vacuum electromagnetic modulating valve will be big.Yet in case assembling finishes, the degree of vacuum size of vacuum electromagnetic modulating valve output can only change by the voltage that change is applied to the electromagnetic coil two ends, can't accurately finely tune.In addition, because the consistency problem of the trueness error of part self and frock assembling, there are deviation in the product output degree of vacuum value and the desired value that cause final assembling to be finished, cause up-to-standard rate low.

Summary of the invention

The technical problem that the utility model solves provides a kind of vacuum electromagnetic modulating valve that can manually adjust the degree of vacuum value of output, and is consistent with desired value with the degree of vacuum value that guarantees output, improves the up-to-standard rate of vacuum electromagnetic modulating valve production.

For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.

The adjustable vacuum electromagnetic modulating valve of saddle, comprise valve body and valve gap, be provided with electromagnetic coil in the valve body, the center of electromagnetic coil is provided with the spool that moves up and down in valve body under the magnetic force that electromagnetic coil produces, the below of described spool is provided with saddle, saddle is arranged in the valve body by the saddle sleeve pipe, the inwall interference fit of the outer wall of described saddle sleeve pipe and valve body, and saddle is positioned at the center of saddle sleeve pipe and is connected with the inner thread of saddle sleeve pipe; Be provided with the valve with the concentricity axis of spool in the described valve gap, valve is connected with vacuum tube.

Improvement of the present utility model is: the center of described saddle is provided with interior threaded hole, and the interior threaded hole internal thread is connected with bolt.

Further improvement of the utility model is: described spool bottom is provided with the blind hole that is equipped with mutually with bolt.

Owing to adopted above technological scheme, the obtained technological progress of the utility model is as follows.

Adopt the valve of fixed length in the inner-cavity structure of the utility model valve gap, the setting of having saved the copper pin, the error in length that has produced when having avoided the assembling of copper pin and valve gap; Saddle is set to adjustable, the error that has produced when not only having avoided saddle and valve body interference fit, the more important thing is the utility model is accurately regulated the degree of vacuum size of output by the distance that changes between saddle and the spool, effectively guarantee the degree of vacuum value of the utility model output and the conformity between the desired value, improved the up-to-standard rate that the vacuum electromagnetic modulating valve is produced.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Wherein: 1, valve gap, 2, saddle, 3, valve body, 4, the saddle sleeve pipe, 5, spool, 6, valve, 7, bolt, 8, blind hole.

Embodiment

Below in conjunction with specific embodiments and the drawings, the utility model is further elaborated.

The adjustable vacuum electromagnetic modulating valve of saddle comprises valve body 3 and valve gap 1, is provided with valve 6 in the valve gap 1, valve 6 and spool 5 concentricity axis settings, and the outer end of valve is connected with vacuum tube.

Be provided with electromagnetic coil in the valve body, the center of electromagnetic coil is provided with the spool 5 that moves up and down in valve body under the magnetic force that electromagnetic coil produces.The below of spool 5 is provided with saddle 2, and saddle 2 is arranged in the valve body by saddle sleeve pipe 4; The inwall interference fit of the outer wall of saddle sleeve pipe 4 and valve body, saddle 2 is positioned at the center of saddle sleeve pipe 4, and is connected with the inner thread of saddle sleeve pipe 4.The center of saddle is provided with interior threaded hole, and the interior threaded hole internal thread is connected with bolt 7.Be provided with the blind hole 8 that is equipped with mutually with bolt with the corresponding spool of bolt bottom.

By the rotation saddle, can make saddle up-down adjustment in the saddle sleeve pipe, thus the distance between control saddle top and the spool bottom.The electromagnetic force size suffered owing to the distance between saddle and the spool and spool is inversely proportional to, the distance of therefore regulating between saddle and the spool can be adjusted the degree of vacuum that the vacuum electromagnetic modulating valve is exported, and further guarantees the degree of vacuum of vacuum electromagnetic modulating valve output and the conformity between the desired value.Certainly, also can change the distance between bolt and the spool by the bolt at rotation saddle center, further realize the precision of output degree of vacuum is regulated.

When the electromagnetic coil of vacuum solenoid valve gets when electric, spool moves downward under the effect of electromagnetic force, and valve is opened, and the vacuum input channel on the valve gap is communicated with the vacuum output channel, thus output and the corresponding degree of vacuum of electromagnetic coil both end voltage.When the electromagnetic coil both end voltage of vacuum solenoid valve reduced, spool moved upward, and the distance on valve and spool top shortens, and the degree of vacuum value of output reduces; When voltage increased, spool moved downward, and the distance on valve bottom and spool top increases, and the degree of vacuum value of output increases.When the degree of vacuum value of output and desired value when having certain deviation, can be by regulating position regulation spool and distance saddle between or distance bolt and spool between of saddle in the saddle sleeve pipe, further the distance between regulating spool and the valve bottom finally reaches the purpose of regulating output degree of vacuum.

Claims

1. adjustable vacuum electromagnetic modulating valve of saddle, comprise valve body (3) and valve gap (1), be provided with electromagnetic coil in the valve body, the center of electromagnetic coil is provided with the spool (5) that moves up and down in valve body under the magnetic force that electromagnetic coil produces, it is characterized in that: the below of described spool (5) is provided with saddle (2), saddle (2) is arranged in the valve body by saddle sleeve pipe (4), the outer wall of described saddle sleeve pipe (4) and the inwall interference fit of valve body, saddle (2) are positioned at the center of saddle sleeve pipe (4) and are connected with the inner thread of saddle sleeve pipe (4); Be provided with the valve (6) with the concentricity axis of spool (5) in the described valve gap, valve is connected with vacuum tube.

2. the adjustable vacuum electromagnetic modulating valve of saddle according to claim 1, it is characterized in that: the center of described saddle is provided with interior threaded hole, and the interior threaded hole internal thread is connected with bolt (7).

3. the adjustable vacuum electromagnetic modulating valve of saddle according to claim 2 is characterized in that: described spool bottom is provided with and bolt equipped blind hole (8) mutually.