CN104696552A

CN104696552A - Novel electromagnetic valve

Info

Publication number: CN104696552A
Application number: CN201510075392.2A
Authority: CN
Inventors: 李海波; 张�成; 肖茜元
Original assignee: SHENZHEN KEYTO FLUID CONTROL CO Ltd
Current assignee: Shenzhen Kentuo Fluid Technology Co ltd
Priority date: 2015-02-12
Filing date: 2015-02-12
Publication date: 2015-06-10
Anticipated expiration: 2035-02-12
Also published as: CN104696552B

Abstract

The invention discloses a novel electromagnetic valve. The novel electromagnetic valve comprises a valve body, a valve cover, a diaphragm and a movable iron core, wherein the valve body and the valve cover form a cavity; a plurality of openings communicated with the cavity are formed in the valve cover; the diaphragm is arranged inside the cavity; the movable iron core can move relative to the valve body; the movable iron core comprises a rocker, at least one ejector rod and a connecting rod; the rocker is arranged on the valve body in a rotating manner to form a lever structure; the at least one ejector rod is connected with the rocker; the connecting rod is arranged on the valve body in a rotating manner, and is connected with the movable iron core and the ejector rod respectively so as to drive the ejector rod by the movable iron core to do linear reciprocating movement; the diaphragm is arranged between the openings and the ejector rod, and sealing parts are arranged at positions, corresponding to the openings, of the diaphragm; the sealing parts can close or open the corresponding openings along with the movement of the ejector rod. Parallel contact of the diaphragm and a valve port is ensured, so that pressure resistance and sealing performance are improved; the influence of the dimensional accuracy of a component on the performance of a product is relatively small, so that the cost of the component is reduced; the power consumption of the electromagnetic valve is effectively lowered, and the stability and the sensitivity of the electromagnetic valve are improved.

Description

A kind of electromagnetic valve

Technical field

The present invention relates to field of fluid control, especially relate to a kind of solenoid valve.

Background technique

Solenoid valve, as a kind of control apparatus of fluid, is widely used in the every field of modern industry.According to its working method and action principle, solenoid valve is divided into many types, wherein a kind of membrane valve controls the break-make of valve port by the distortion of barrier film, membrane valve of the prior art promotes rocking bar by electromagnet, diaphragm is promoted again by rocking bar, in prior art, also include the first elastic component resetted for rocking bar and the second elastic component resetted for electromagnet, wherein first, the Impact direction of the second elastic component is contrary, therefore when the second resilient element urges electromagnet moves, it not only will bear the gravity of electromagnet and accessory structure thereof, also to bear the first elastic component by the elastic force compressed, this means that the second elastic component must have enough elastic force, thus cause the increase of the second elastic component cost, in addition, electromagnet also must overcome larger reaction force when compression the second elastic component, be unfavorable for the processing of solenoid valve.

Summary of the invention

In order to overcome the deficiencies in the prior art, the invention provides a kind of electromagnetic valve, which obviate the negative effect of rocking bar Returnning spring, decrease its impact on the performance of solenoid valve, the power consumption of solenoid valve can be effectively reduced, improve stability and the sensitivity of solenoid valve simultaneously.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of electromagnetic valve, comprise valve body, valve gap, diaphragm and dynamic iron core, valve body and valve gap form cavity, and valve gap is provided with the some openings be communicated with cavity, and diaphragm is arranged in cavity, and dynamic iron core can valve body relatively, comprises

Rocking bar, it is rotating is arranged on valve body, forms lever construction;

The push rod at least one place, it is connected with rocking bar;

Connecting rod, it is rotating is located on valve body, is connected respectively with dynamic iron core with push rod, makes the passive iron core of push rod being only positioned at rocking bar pivot point side drive the to-and-fro motion occurred linearly, thus forces rocking bar to rotate;

Diaphragm is arranged between opening and push rod, and it corresponds to opening and is provided with sealed department, and corresponding opening can be closed or be opened to sealed department with the motion of push rod.

As the further improved procedure of such scheme, opening is two places be set up in parallel; Push rod is a place, and it is connected with one end of rocking bar, arranges corresponding to any place in opening; Sealed department is a place.

As the further improved procedure of such scheme, opening is three places be set up in parallel; Push rod is two places, and it is connected with the two ends of rocking bar respectively, and arrange corresponding to wherein two places in three place's openings, sealed department is two places.

As the further improved procedure of such scheme, the pivot point of rocking bar is arranged in the middle, and the push rod be positioned on the right side of fulcrum is connected with connecting rod.

As the further improved procedure of such scheme, the opening of both sides is positioned at middle opening symmetry relatively, and push rod corresponds respectively to the opening being positioned at both sides.

As the further improved procedure of such scheme, push rod periphery is provided with some annular grooves, and its top is provided with flange, and rocking bar is connected with push rod by the mode embedding annular groove with connecting rod.

As the further improved procedure of such scheme, the top of dynamic iron core is provided with annular groove, and connecting rod is connected with dynamic iron core by the mode embedding annular groove.

As the further improved procedure of such scheme, sealed department is the groove meeting flange shape, and the diapire of groove has sealing surface.

As the further improved procedure of such scheme, the both sides of groove are provided with the buffer structure being beneficial to it and floating.

As the further improved procedure of such scheme, buffer structure is semicircular projection.

The invention has the beneficial effects as follows:

1, ensure that the parallel contact of diaphragm and valve port, be easy to compress, improve withstand voltage and sealing;

2, the impact of dimensional accuracy on product performance of part is less, reduces cost of parts;

3, eliminate the negative effect of rocking bar Returnning spring, decrease its impact on the performance of solenoid valve, the power consumption of solenoid valve can be effectively reduced, improve stability and the sensitivity of solenoid valve simultaneously.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the sectional view of one embodiment of the invention;

Fig. 2 is the schematic diagram of a barrier film of the present invention embodiment;

Fig. 3 is the schematic diagram of a push rod of the present invention embodiment;

Fig. 4 is the schematic diagram that the present invention moves an iron core embodiment.

Embodiment

Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present invention, concrete structure and generation, to understand object of the present invention, scheme and effect fully.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.

It should be noted that, if no special instructions, when a certain feature is called as " fixing ", " connection " in another feature, it can directly be fixed, be connected in another feature, also indirectly can fix, be connected in another feature.In addition, it is only relative to the mutual alignment relation of each constituent element of the present invention in accompanying drawing that the upper and lower, left and right used in the present invention etc. describe.

In addition, unless otherwise defined, all technology used herein are identical with the implication that those skilled in the art understand usually with scientific terminology.The term used in specification is herein to describe specific embodiment, instead of in order to limit the present invention.Term as used herein " and/or " comprise the arbitrary combination of one or more relevant Listed Items.

With reference to Fig. 1, show one embodiment of the present of invention, comprise valve body 10, valve body 10 is connected with coil, be provided with dynamic iron core 30 in the centre of coil, it can move, as the power source of solenoid valve by opposed coil under the state of energising; Be provided with elastic component 31 below dynamic iron core 30, for the elastic force providing dynamic iron core 30 to reset, preferably, elastic component 31 can be spring, also can be other known elastic element.

Preferably, the overall structure of solenoid valve vertically arranges, the movement that namely dynamic iron core 30 is vertical.

Comprise valve gap 20, itself and valve body 10 form cavity 101, and valve gap 20 is provided with the some openings 21 be communicated with cavity 101, and fluid can enter and flow out from other opening 21 from some openings 21, controls by carrying out convection cell to the opening and closing of opening 21.

Comprise rocking bar 40, it on valve body 10, makes it can rotate around valve body by pinned connection, thus forms lever construction, comprises the push rod 50 of at least one, one end and rocking bar 40 clamping, and corresponding opening is arranged.After dynamic iron core 30 drive rocker 40 deflects, in order to realize the reset of rocking bar 40, existing conventional way is provided with Returnning spring at rocking bar place, it is contrary with the Impact direction of elastic component 31, a problem is there will be like this: elastic component 31 not only will bear the gravity of movement parts and the frictional force between it in movement process, also want compression reseting spring, this just requires that lower spring has larger elastic force.When just needing larger electromagnetic force to be compressed by lower spring after electromagnet energising, consume more energy; Also reduce the sensitivity of solenoid valve in addition.In order to address this problem, be provided with the connecting rod 51 that can rotate relative to it at valve body 10, connecting rod 51 is connected with push rod 50 with dynamic iron core 30 respectively, makes push rod 50 can drive the to-and-fro motion occurred linearly by passive iron core 30, thus forces rocking bar 40 to rotate back and forth.

Wherein, if there is multiple push rod, has and only have the push rod being positioned at pivot point side to be connected with connecting rod 51.

Outs open 21 is arranged on the motion track of push rod 50.

Also include barrier film 60, it is arranged in cavity 101, and between opening 21 and push rod 50, with reference to Fig. 1 and Fig. 2, it corresponds to the sealed department 601 that opening 21 place is provided with at least one, sealed department 601 can be opened with the motion of push rod 50 or closed corresponding opening, because push rod 50, sealed department 601 are on same straight line with opening 21, so push rod 50 can make sealed department 601 concora crush on opening 21, effectively avoid the leakage caused because of unbalance stress.

Preferably, sealed department 601 is groove, and the diapire of groove has the sealing surface of level.

Preferred further, the two ends of sealed department 601 are provided with buffer structure 602, and buffer structure 602 can make sealed department 601 easier floating, strengthens sealability.

Preferred further, buffer structure 602 is semicircular elastic bumps.

With reference to Fig. 3, preferably, the periphery of push rod 50 is provided with the first annular groove 501, rocking bar 40 is inserted in the first annular groove 501, forms the interlock with push rod 50.

The top of push rod 50 is provided with flange 502, by engaging with groove, push rod 50 and diaphragm is connected as one; The bottom of annular groove 501 is provided with the second annular groove 503, for connecting connecting rod 51.

With reference to Fig. 4, the top of dynamic iron core is provided with annular groove 301, for connecting connecting rod 51.

In the present embodiment, three places that opening 21 is arranged for horizontal alignment, i.e. three-way valve, concrete, be respectively the first opening 211, second opening 212 and the 3rd opening 213, wherein the second opening 212 is public opening, accordingly, push rod 50 and sealed department 601 are two places, and it corresponds respectively to the first opening 211 and the 3rd opening 213 is arranged.Push rod 50 is connected with the two ends of rocking bar 40 respectively, under the effect of lever construction, makes and only has the push rod 50 of one end can to conflict sealed department 601, closing corresponding opening.

Preferably, pivot point is provided with the neutral position of rocking bar 40, makes the displacement of two ends push rod equal.

Second opening 212 is located in the middle part of valve gap, and the first opening 211 is arranged on the left of it, the 3rd opening 213 symmetry be arranged on right side, thus the most reasonably can reduce the overall volume of solenoid valve.

Preferred further, the push rod 50 be connected with rocking bar 40 right-hand member is connected with connecting rod 51.

The workflow of the present embodiment three-way valve is: during electromagnet no electric circuit, dynamic iron core 30 is in original state, under the effect of elastic component 31, push rod 50 is driven to rise by connecting rod 51, be pressed on by the sealed department 601 of correspondence on the 3rd opening 213, rocking bar 40 rotates towards left side simultaneously, and the push rod 50 be connected with rocking bar 40 left end declines, open the first opening 211, thus fluid can flow into from the first opening 211 and flow out from the second opening 212.

After electromagnet energising, dynamic iron core 30 moves downward, while compression elastic piece 31, rocking bar 40 is driven to rotate towards right side, the push rod 50 on right side declines, and the push rod 50 in left side rises, thus the first opening 211 is closed, 3rd opening 213 is opened, and fluid can flow into from the 3rd opening 213 and flow out from the second opening 212.

As a distortion of the present embodiment, two places that opening 21 is arranged for horizontal alignment, accordingly, push rod 50 is a place, with one end clamping of rocking bar 40, forms the structure of Twoway valves.

More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.

Claims

1. an electromagnetic valve, comprises valve body, valve gap, diaphragm and dynamic iron core, and described valve body and valve gap form cavity, described valve gap is provided with the some openings be communicated with described cavity, described diaphragm is arranged in described cavity, and described dynamic iron core can valve body relatively, it is characterized in that: comprise

Rocking bar, it is rotating is arranged on described valve body, forms lever construction;

The push rod at least one place, it is connected with described rocking bar;

Connecting rod, it is rotatable is located on described valve body, is connected respectively with described dynamic iron core with push rod, makes the described push rod being only positioned at described rocking bar pivot point side be driven by described dynamic iron core the to-and-fro motion occurred linearly, thus forces described rocking bar to rotate;

Described diaphragm is arranged between described opening and push rod, and it corresponds to described opening and is provided with sealed department, and corresponding opening can be closed or be opened to described sealed department with the motion of described push rod.

2. electromagnetic valve according to claim 1, is characterized in that: described opening is two places be set up in parallel; Described push rod is a place, and it is connected with one end of described rocking bar, arranges corresponding to any place in described opening; Described sealed department is a place.

3. electromagnetic valve according to claim 1, is characterized in that: described opening is three places be set up in parallel; Described push rod is two places, and it is connected with the two ends of described rocking bar respectively, and arrange corresponding to wherein two places in described three place's openings, described sealed department is two places.

4. electromagnetic valve according to claim 3, is characterized in that: the pivot point of described rocking bar is arranged in the middle, and the push rod be positioned on the right side of described pivot point is connected with described connecting rod.

5. electromagnetic valve according to claim 4, is characterized in that: the described opening of both sides is positioned at middle opening symmetry relatively, and described push rod corresponds respectively to the described opening being positioned at both sides.

6. the electromagnetic valve according to any one of Claims 1 to 5, is characterized in that: described push rod periphery is provided with some annular grooves, and its top is provided with flange, and described rocking bar is connected with described push rod by the mode embedding described annular groove with connecting rod.

7. the electromagnetic valve according to any one of Claims 1 to 5, is characterized in that: the top of described dynamic iron core is provided with annular groove, and described connecting rod is connected with described dynamic iron core by the mode embedding described annular groove.

8. electromagnetic valve according to claim 6, is characterized in that: described sealed department is the groove meeting described flange shape, and the diapire of described groove has sealing surface.

9. electromagnetic valve according to claim 7, is characterized in that: the both sides of described groove are provided with the buffer structure being beneficial to it and floating.

10. electromagnetic valve according to claim 8, is characterized in that: described buffer structure is semicircular projection.