CN201198906Y

CN201198906Y - Double-diaphragm electromagnetic valve

Info

Publication number: CN201198906Y
Application number: CNU2008200859903U
Authority: CN
Inventors: 孙光锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-23
Filing date: 2008-04-23
Publication date: 2009-02-25
Anticipated expiration: 2018-04-23

Abstract

The utility model provides a dual-film electromagnetic valve, consisting of a coil component, and a valve cover, a screen, a valve body and a built-in film which are connected by a guiding component; an upper film is arranged between the valve cover and the screen; an air chamber B is formed between the upper film and the valve cover; a lower film is arranged between the screen and the valve body; an air chamber E is formed between the upper film, lower film and screen; the upper film is matched with the lower film; the air chamber B is not communicated with the air chamber E; the valve uses a structure of dual films; the films are not provided with other parts; therefore, the valve bears uniform force and has good elasticity and long service life; furthermore, the valve has simple structure, few parts, no springs in the air chamber, has small volume of air chamber, leads the volume of the whole valve body to be reduced and reduces the production cost; the air chamber has small volume and small resistance, thus leading the opening/closing action of the valve to be fast with high sensitiveness and small energy need; therefore, the adoption of the electromagnetic valve of small power can drive the working valve of large flux to be started and closed, thus saving the energy resource.

Description

Two diaphragm solenoid valves

Technical field

The utility model relates to a kind of control valve, particularly a kind of two diaphragm solenoid valves that are used for the controlling liquid flow direction in vehicle.

Background technique

Patent No. ZL01207914.6 " a kind of pair of diaphragm pulse valve " provides a kind of valve body, valve seat and built-in diaphragm that is connected by solenoid valve to constitute, two air chambers that are communicated with by pore are set in the described valve body, the diaphragm that is connected by spring is set in the air chamber, the separation panel pore that is communicated with air chamber is set in the valve body, valve body be provided with around suction port, puff prot on the valve seat connects the winding-up pipe, with the folding of solenoid valve controlling diaphragm sheet, makes its pulsed ejection air-flow.But have equalizing orifice on this valve film, also have the through hole fixation fastener in the middle of the diaphragm, the spring that cooperates with fastening piece is installed in the air chamber, these parts have taken the useful space of air chamber, increased the volume of valve body, on the diaphragm part is installed in addition, has both influenced the elasticity and the integrity of diaphragm, influence its working life again.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of pair of diaphragm solenoid valve is provided, and it is simple in structure, compact to adopt two diaphragm structures, and part is few, and volume is little, and easy to assembly, long service life.

The technical scheme in the invention for solving the above technical problem is: two diaphragm solenoid valves, the valve gap, dividing plate, valve body and the built-in diaphragm that are connected by coil block, pilot head component constitute, install diaphragm between described valve gap, dividing plate, upper diaphragm and valve cover chamber form air chamber B, diaphragm down is installed between described dividing plate, valve body, form air chamber E between upper and lower diaphragm and dividing plate, upper and lower diaphragm cooperates, and does not communicate between air chamber B and air chamber E.

Compared with prior art, advantage of the present utility model is: the upper and lower diaphragm edge joint of this valve does not have other through hole and spring except that mounting hole is arranged, easily install, diaphragm is a complete integral body, and is stressed even, good springiness, so long service life, because of simple in structure, part is few in addition, no spring in the air chamber, described gas chamber volume is little, and the volume of whole valve body is reduced, and has reduced cost of production.Little because of gas chamber volume, resistance is little, make valve to open and close action fast, highly sensitive, institute's energy requirement is little, therefore the operating valve of selecting for use low power solenoid valve just can drive big flow opens and closes energy saving.

Description of drawings

Fig. 1, structural representation of the present utility model (closed condition).

Fig. 2, structural representation of the present utility model (opening state).

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described.

In the middle of the upper surface of following diaphragm 16 round boss is arranged, the embedded circular metal pad 15 that is placed with of the groove of boss upper surface more can guarantee its sealing, and the outward edge of pad 15 is coated by diaphragm 16 down and connects into integral body, mounting hole is arranged on four jiaos.

Upper and

lower diaphragm

14,16 is a rubber product.Upper diaphragm 14 can adopt two the overlapping use of flat sheet rubber.

In the middle of one sidewall of dividing plate 2 through hole is arranged, be exhaust port R, four jiaos have mounting hole.

Valve is arranged in the middle of the upper surface of valve gap 3, a through hole 13 is arranged in the middle of the valve, through hole 13 communicates with exhaust port F on valve gap 3 sidewalls.On the bottom surface on valve next door an aperture 4 is arranged, valve gap has mounting hole for 3 four jiaos, and the groove of the band conical surface is arranged in the middle of the lower surface.

Successively with valve gap 3, upper diaphragm 14, dividing plate 2, following diaphragm 16, valve body 1 is overlapping, pass mounting hole on four jiaos with screw again, connect into integral body in the screw of screw on valve body 1, on, following diaphragm is close together, form the circular air chamber B and the air chamber E of ring therebetween, again will on sealing head 8 is installed, under chock plug 12 is installed, the moving iron core 9 of spring 11 is put into the pilot head assembly 7 at coil block 6 places, and coil block 6 is fixed on the pilot head assembly 7 with nut 5, the outside thread of O RunddichtringO 10 is installed with pilot head assembly 7 lower ends, be connected with the internal thread on the valve gap 3, above assembly is fixed on the valve body 1 integrant pair of diaphragm solenoid valve by parts such as cover plates.

Under normal conditions, the suction port C air inlet of pilot head component 7 upper ends, air-flow flows into through middle aperture, and gas guide groove on moving iron core 9 peripheries and the aperture 4 on the valve gap 3 enter air chamber B, and press to upper diaphragm 14, upper diaphragm is moved down, and drive the following diaphragm 16 stick together and move, the valve nozzle 17 in the middle of diaphragm 16 is blocked valve body 1 down, meanwhile the air among the air chamber E communicates with relief opening R, at this moment valve closing, as shown in Figure 1.

If energising, coil block produces electromagnetic force, moving iron core 9 is picked up to move up, sealing head 8 on it is blocked the not air inlet of aperture of suction port C lower end, at this moment chock plug 12 disengagings on the moving iron core contact with through hole 13, air among the air chamber B enters through hole 13 through aperture 4, discharge from relief opening F, the air of air chamber E communicates with relief opening R, and valve pocket internal pressure reduction at this moment is in non-equilibrium state, and following diaphragm 16 is just by the fluid jack-up in the valve body 1, break away from valve nozzle 17, valve is opened, and fluid flows to liquid outlet A from liquid entering hole P, as shown in Figure 2.

If the deenergization valve is got back to original state again, as shown in Figure 1.

Claims

1. two diaphragm solenoid valve, the valve gap (3), dividing plate (2), valve body (1) and the built-in diaphragm that are connected by coil block (6), pilot head component (7) constitute, it is characterized in that installing diaphragm (14) between described valve gap (3), dividing plate (2), form air chamber (B) between upper diaphragm (14) and valve gap (3), diaphragm (16) down is installed between described dividing plate (2), valve body (1), form air chamber (E) between upper and lower diaphragm (14), (16) and dividing plate (2), upper and lower diaphragm cooperates, and does not communicate between air chamber (B) and air chamber (E).

2. according to claim 1 pair of diaphragm solenoid valve, round boss is arranged in the middle of the upper surface of diaphragm (16) under it is characterized in that, the embedded circular metal pad (15) that is placed with of the groove of boss upper surface, the outward edge of pad are coated by diaphragm (16) down and connect into integral body, mounting hole are arranged on four jiaos.

3. according to claim 1 pair of diaphragm solenoid valve is characterized in that in the middle of the sidewall of dividing plate (2) through hole being arranged is exhaust port (R).

4. according to claim 1 pair of diaphragm solenoid valve, there is valve the upper surface centre that it is characterized in that valve gap (3), one through hole (13) is arranged in the middle of the valve, through hole (13) communicates with exhaust port (F) on valve gap (3) sidewall, on the bottom surface on valve next door an aperture (4) is arranged, valve gap has mounting hole for (3) four jiaos, and the groove of the band conical surface is arranged in the middle of the lower surface.