CN2146619Y - Self-locking fluid valve - Google Patents

Abstract

The utility model relates to a self-locking fluid valve, comprising an electric magnet, a valve seat, a valve core, a valve plug, windings and a spring, wherein, the middle of the bottom of the valve seat is provided with an adjusting screw with a permanent magnet, and the utility model is the improvement of the regular pulse electromagnetic valve. The self-locking fluid valve of the utility model is adopted, which can rapidly and effectively control fluid (liquid or gas) with different pressures, save the proper work energy loss of the electromagnetic valve and increase the service life of the self-locking fluid valve.

Description

Self-locking fluid valve

A kind of self-locking fluid valve relates to the improvement of impulse electromagnetic valve.

Impulse electromagnetic valve commonly used, be by being applied to electric current on the coil for a long time, make the unlatching of electromagnetic valve plug action or the admittance of closing control fluid, conventional solenoid valve is that the sealing glued membrane with monoblock hides on the porting of solenoid valve, in order to the turnover of control fluid.Because sealing glued membrane itself is flexible, tension force is big, therefore, the resistance of the valve of convection cell is also big, very easily produces following situation: the one, when gas or fluid flow are big, because the resistance of the valve of closing membrane is greatly, need to remove to promote closing membrane with the strength of segment fluid flow, like this, the fluid pressure of outflow is far smaller than the fluid pressure of inflow, shows fluid and can not pass through solenoid valve swimmingly; The 2nd, when fluid pressure is very little, because fluid reduces the downward pressure of closing membrane, the trend that closing membrane is replied before the deformation strengthens, tend to overcome spool gravity and leave porting slightly, so porting edge of draught excluder effectively, the fluid of trace still can flow to the another side of valve from the space between closing membrane and the porting edge, under the situation that solenoid valve is failure to actuate, still forms gas leakage or leakage state; The 3rd, because for a long time to electric valve coil energising pressurization, power consumption is big, electromagnet coil easily generates heat under energising effect over a long time simultaneously, and shortened the working life of electromagnet.

The purpose of this utility model is to provide a kind of impulse electromagnetic valve, has self-locking device, can control the logical of fluid (containing gas and liquid) under the various pressure effectively or close, again can conserve energy, the power consumption when reducing solenoid valve work itself, the working life of prolongation solenoid valve.

The utility model is to implement like this, by permanent magnet 1, nonmetal skeleton 2, the valve seat 5 of bringing relief opening into, spool 6, coil 3, spring 4 with seal the self-locking fluid valve that close glued membrane is formed, it is split type wherein to seal the glued membrane employing, promptly is made up of the plug 9 of O-ring seal 10 and band mesopore; Two utmost point vertebra shapes are adopted in the bottom of spool 6 simultaneously, and the plug 9 of band mesopore is installed between bottom two utmost point vertebra shapes of spool 6, and are rotary with the adjusting screw 8 of a top band permanent magnet 7 in the middle of the bottom of valve seat 5.

Below in conjunction with accompanying drawing in detail enforcement of the present utility model and use are described in detail.

Fig. 1 is a schematic representation of the present utility model;

Fig. 2 is the A-A ' view of Fig. 1;

Fig. 3 is a band mesopore sealing plug floor map.

As shown in the figure, the said self-locking fluid valve of the utility model, form by permanent magnet 1, nonmetal skeleton 2, coil 3, spring 4, valve seat 5 and spool 6, wherein, in the screw in the middle of valve seat 5 bottoms, be spun on the adjusting screw 8 of a top band permanent magnet 7, the bottom of spool 6 becomes secondary vertebra shape as shown in Figure 1, the band mesopore sealing plug 9 be contained between the secondary vertebra shape of spool 6 bottoms, O-ring seal 10 then is contained in around the porting of valve seat 5.Permanent magnet 1 is placed on the top of coil 3, nonmetal skeleton 2 places in the mesopore of coil 3, and the top of spool 6 is being overlapped spring 4 and put into the hollow in the top 11 of nonmetal skeleton 2, and valve seat 5 is inserted in the bottom of nonmetal skeleton 2, interior identical with O-ring seal 10, make it form a sealing chamber.In order to fix nonmetal skeleton 2 not because of the elastic force of spring 4 or the effect ejection of electromagnetic force, a metal platen 12 is housed between coil 3 and valve seat 5, the metal set casing 13 outside coil 3 is dressed up one by 4 fastening screw trip bolts.

Self-locking fluid valve described in the utility model, be to work like this: because the permanent magnetic force of the permanent magnet of selecting for use 1 is slightly larger than the elastic force of spring 4, under the shape of normally not working, when as long as the distance of permanent magnet 7 and spool 6 is close on the adjusting screw 8 in the middle of valve seat 5 bottoms, spool 6 is downward pressing intake and exhaust (liquid) holes, this self-locking fluid valve becomes closed state, when adding a positive working pulse at the two poles of the earth of coil 3, because the permanent magnetic force stack of electromagnetic force and permanent magnet 1, making a concerted effort of making progress that is produced, make spool 6 overcome permanent magnet 7 on the pressure of spring 4 and the adjusting screw 8 to lower magnetic force, suction is hollow pushing up on 11 to nonmetal skeleton 2, draw back the sealing plug 9 that is pressed on the port, make fluid can as scheme to flow to C from B swimmingly, even at this moment remove the power supply on the coil, because the permanent magnetic force of permanent magnet 1 is greater than the elastic force of spring 4, spool 6 still keeps drawing back state, but when coil 3 is sensed a negative impulse, its of electromagnetic field generation is opposite with permanent magnetic force, during equipollent anti-magnetic, offset the permanent magnetic force of permanent magnet 1, spool 6 is pressed to the below by the elastic force of spring 4, when spool 6 during near adjusting screw 8, because the magnetic force of the permanent magnet 7 at its top, make spool 6 be with sealing plug 9, gag port exactly, throttle down has prevented that the sealing plug from departing from port and the gas leakage or the leakage state that cause.In practical operation, regulate adjusting screw 8 exactly, even just can obtain the sealing state that a hydrodynamic pressure is in the best that also can guarantee when extremely hanging down state.

Adopted the said self-locking fluid valve of the utility model, both can avoid making the coil of solenoid valve to be in "on" position for a long time, the disadvantage that reduce the working life that prevents coil heating and cause, can save the work power consumption phenomenon of solenoid valve itself again, can also accomplish simultaneously valveless resistance phenomenon, guarantee that solenoid valve is operated in any pressure under the admittance of can both accurate reliability ground controlling fluid.

Claims (2)

1, a kind of self-locking fluid valve is made up of permanent magnet 1, nonmetal skeleton 2, coil spring 4, the valve seat 5 of bringing the current drainage body into and spool 6, it is characterized in that the middle adjusting screw 8 that is installed with a roots and tops band permanent magnet 7 in bottom of said valve seat 5.

2, according to the said self-locking fluid valve of claim 1, it is characterized in that said spool 6 bottoms employing secondary vertebra shape, the sealing plug 9 of band mesopore is contained between the secondary vertebra shape.

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