CN87107016A

CN87107016A - Dosing distributing valve

Info

Publication number: CN87107016A
Application number: CN87107016.2A
Authority: CN
Inventors: 今田义夫
Original assignee: Niiawa Industrial Co ltd
Current assignee: Niiawa Industrial Co ltd
Priority date: 1986-11-16
Filing date: 1987-10-14
Publication date: 1988-06-15
Also published as: KR930003051B1; CN1016637B; KR880006491A; JPS63127116A

Abstract

The present invention discloses a kind of, to the lubricated a plurality of places of the palpus of various machines, the distributing valve that the oiling agent of centralizedly supply is distributed really supply with metering method, particularly disclose a kind of pressure relief means thereon that has, borrow and alternately to control main line that is fluid and supply with pressurization and release in the main line, finish the release reaction distributing valve of metering distributing fluids, when pressurizeing accommodating fluid in distributing valve liquid storage, the dosing distributing valve of type is sent in the distribution that spues during release after such release reaction.

Description

The present invention is about a kind of a plurality of places that the palpus of various machines is lubricated, the distributing valve that the oiling agent of centralizedly supply is distributed really supply with metering method, particularly about a kind of pressure relief means thereon that has, mat is alternately controlled pressurization and the release in main line that is the fluid supply main line, finish the release response type distributing valve of metering distributing fluids, pressurization during accommodating fluid in distributing valve liquid storage, spue during release and distribute the dosing distributing valve that send type after such release reaction.

The front elevation of the dosing distributing valve that Fig. 1 system is similar with the present invention;

Fig. 2 is the tectonic maps in the stroke that spues of conventional example in cross section of the expression P-P line that is equivalent to Fig. 1;

The present invention's that Fig. 3 system is identical with Fig. 2 sectional drawing is the tectonic maps of indication device in halted state.

Sent the dosing distributing valve of type after having several known releases to react in the past.The wherein comparatively famous dosing distributing valve shown in Figure 2 that has the present inventor to develop.Send the type dosing distributing valve after this traditional release reaction, be that central position up and down in valve base 1 laterally sets fluid supply main line 10, and this fluid supply main line and to be located at the umbellate form changing valve 23 that spuing of its top make with flexible materials between the hole 21 up be the switching-valve arrangement 2 that major part constitutes, side under above-mentioned fluid supply main line 10, inner installing mat helical spring 26 is set and the metering device for storing liquid 3 of the plunger 25 that spues of action, and utilize through hole 9,9 ' make on the liquid storage room 13 of device for storing liquid, with the downstream side of the changing valve 23 of above-mentioned valve chamber 12 that is spue and be communicated with between 21 sides of hole.

The above-mentioned formation of mat, send the type dosing distributing valve supplying main line 10 after this release reaction by fluid, during by fluid feed path 11 forced feed fluids, but the fluid pressure of mat supply, make end surface on the changing valve of umbellate form spool formation be connected to the oral area valve seat in the hole 21 that spues, close this hole that spues.And the above-mentioned hydrodynamic pressure of mat, make the peripheral portion a of above-mentioned spool bend towards shaft core direction, forming the space between the side face within the periphery a of this spool and the valve chamber 12, on above-mentioned changing valve 23, transfer the fluid of this supply simultaneously.The fluid that is transplanted on above-mentioned changing valve 23 tops is supplied to liquid storage room 13 by through hole 9,9 ' guided.Be supplied to liquid storage room 13 interior liquid that resistance is spued with the elasticity of spring 26, will spue and press to the below, store the liquid of the volume that is equivalent to this plunger action and enlarges with plunger 25.

After above-mentioned liquid storage finished, if make into depressurization phase in the control fluid supply main line 10, the pressure of above-mentioned changing valve 23 downsides just reduced, the outside deflection of the peripheral portion of this changing valve, be crimped on wall within the valve chamber 12 and produce the effect that stops adverse current, and depress this changing valve 23, open the hole 21 that spues.Its result is kept at liquid storage room 13 interior fluids and just is subjected to spuing with the force feed of the recuperability of spring 26, and spues from the hole 21 that spues of above-mentioned opening.

During according to above-mentioned formation, fluid supply main line and the person in charge and the distribution piping that continue in the hole that spues all can be adapted to the attachment face that is parallel to this distributing valve, simultaneously, when installment state, metering device for storing liquid and release response type switching-valve arrangement also can become parastate with above-mentioned attachment face, have the multiple advantages of sending the type dosing distributing valve after release is reacted.

On the other hand, send the type distributing valve after this release reaction, generally its discharge-amount is the trace of 0.5cc.～0.02cc., does not allow valve inside that a little fluid leak-off is arranged.And when using the dosing distributing valve of this release response type changing valve, if unnecessary space is arranged in device inside, can air entrapment in this space, so discharge-amount can produce error, becomes problem.

Because above-mentioned situation, this dosing distributing valve must be not have unnecessary space textural, and manufacturing precision must be very high.

Yet this class dosing distributing valve that has earlier, the valve chamber 12 of the release transoid switching-valve arrangement that fluid supply main line folder work is set at upper and lower, with 13 of the liquid storage rooms of metering device for storing liquid be communicated with through hole 9,9 ', in design, to the sectional area of through hole, its length dimension is quite big.Therefore, utilize this through hole 9,9 of die casting ' and the stripping forming difficulty of periphery.If do not make this through hole 9,9 ' and during peripheral stripping forming, must mat machining and after machining deburring, not only producibility is very poor, and is difficult to produce the unified goods of high precision.

If shorten above-mentioned through hole 9,9 ' length, promptly because a variety of causes, in internal structure, can enlarge unnecessary space, performance is reduced.

Simultaneously in this traditional class distributing valve, not only the fluid of liquid storage spues in the stroke, and by through hole 9,9 ' and flow into place in the valve chamber, the flow velocity of fluid can significantly change, and the process that guides to the hole that spues simultaneously is very slick and sly, causes the turbulent flow that produces fierceness.Because this turbulent flow, may make the umbellate form spool produce etc., sewing of fluid taken place in this changing valve portion, cause and cause the unfavorable condition that spues.

The present invention makes in view of above each point, and its purpose is sent the existing variety of issue of dosing distributing valve of type after eliminating traditional release reaction, and cheapness provides high precision and unified goods.

The present invention is the special valve shell of component part equipment at switching-valve arrangement, as the means of eliminating above-mentioned all problems.

The through hole 9,9 of traditional distributing valve ' have very long size (L) from liquid storage room 13 to hole 21 oral areas that spue.The present invention forms valve formation chamber 14 with the component part (1 ') of the switching-valve arrangement between this size (L), constitute indoor at this valve, constitute the valve chamber 12 of the axle core formation changing valve of chamber in this valve, forming the path 18 that compensates a through hole part at its side face simultaneously is its main purpose, and equipment valve shell 15.This valve shell is contained in bolt that above-mentioned valve constitutes the spuing with nipple joint 20 of oral area of chamber and fixing.Simultaneously, above-mentioned valve shell forms moving back of male shape with the snap-latch surface 31 with nipple joint of spuing and pulls out shape, and at this snap-latch surface guide groove 17 is set, and relative above-mentioned spuing formed moving back of female shape with square end face 32 within the nipple joint and pull out shape.Moreover, constitute the changing valve of umbellate form certainly at above-mentioned valve chamber.(with reference to Fig. 2 and Fig. 3)

One of the present invention feature is, mat is equipped the structure of above-mentioned valve shell, and by being formed on the guide groove 17 that spues with between the butt snap-latch surface of nipple joint and valve shell, be formed on above-mentioned valve shell side face and valve and constitute path 18 between the indoor surface, and be located in above-mentioned valve and constitute through hole (19 between bottom surface, chamber and liquid storage room, 19 '), constitute the valve chamber 12 of connection changing valve and the path (conventional example 9,9 ') of liquid storage room 13.(with reference to Fig. 3)

Another feature of the present invention is, is located in the shorten length of stating through hole (9,9 ') on the valve base 1 and is liquid storage room and above-mentioned valve and constitute length (l) between the bottom surface of chamber.

Feature again of the present invention is, with the valve chamber 12 of changing valve and above-mentioned path etc., the major component of structure forms the valve shell 15 of easy processing (moulding), and this valve shell is constituted the shape of available metal mould-forming.

And the present invention is because the above-mentioned valve shell of equipment, and obtains not make the structure of complementary space more than the air trapping, and is simultaneously can slick and sly guiding fluid and his like moving.

According to above-mentioned formation the present invention's effect is described, Details as Follows for it.

Behind 10 accommodating fluids of fluid supply main line, the pressure of institute's accommodating fluid makes end surface 23b on the changing valve 23 that the umbellate form spool constitutes be connected to the oral area valve seat 22 of discharge opening, seals this hole 21 that spues.On the other hand, the periphery of umbellate form spool 23a is then scratched to the inside because of the supply fluid pressure, and valve chamber within form the gap between the wall, and allow fluid to flow.The fluid of being supplied with will flow to the chamber, back 12 of above-mentioned changing valve 23 because of this effect.The guide groove 17 that the fluid that flows into this chamber, back will be subjected to being formed at end surface on the valve shell 15 guides, and is formed at above-mentioned valve shell outer circumferential face and valve and constitutes path 18 between indoor wall and flow into.And pressure fluid constitutes the circular groove 16 of bottom, chamber by being formed at valve, by force feed to be arranged in through

hole

19,19 between above-mentioned valve formation chamber 14 and the liquid storage room 13 ', be supplied into above-mentioned liquid storage room.Be supplied to the fluid of this liquid storage room 13 then to resist to spue to depress to spue, store and be equivalent to this and spue with the liquid of the amount of the volume that action enlarged of plunger with plunger 25 with the elasticity of spring 26.

Finish removal fluid behind the above-mentioned liquid storage and supply with the interior pressure in main line 10, the pressure of above-mentioned changing valve 23 downsides just reduces, and the peripheral portion 23a of this changing valve scratches laterally, and be crimped on wall within the valve chamber 12, form the prevention counter flow action, and depress this changing valve, just opened the hole 21 that spues.Because open in the hole that spues, be kept at liquid storage room 13 interior fluids be subjected to spuing force feed with spring 26 recuperabilities, pass through in regular turn above-mentioned through hole 19,19 ', path 18, guide groove 17, adverse current is to valve chamber 12, spued by the hole 21 that spues of opening.Fluid in the above-mentioned stroke that spues is all identical haply because of the sectional area of through hole, path, guide groove, therefore can keep the flow velocity that equates.And, become on the exit portion of these connections and state the oral area of guide groove 17, thereby this guide groove and the fluid between the hole of spuing and his like are moving very slick and sly, can restrain the generation of turbulent flow towards the hole 21 that spues.Its result, conversion spool 23 can often correctly remain in the axle core that should take in, and bad phenomenon can not spue.

Now it is as follows to specify the present invention with reference to the embodiment of Fig. 3.

In the present embodiment, valve base 1 is to use the die casting moulding.Lower direction central position on valve base 1 is looked from positive (Fig. 1), and transverse direction sets fluid supply main line 10.At above-mentioned valve base 1 upper set a plurality of units distributing valve is arranged.

Each distributing valve system of unit constitutes along the axis perpendicular to above-mentioned fluid supply main line 10 respectively.

The present invention's dosing distributing valve is that side constitutes switching-valve arrangement 2 on above-mentioned fluid supply main line 10, and side constitutes metering device for storing liquid 3 under above-mentioned fluid supply main line 10.

Above-mentioned switching-valve arrangement is to be formed in that the side end face becomes to hollow out in the valve formation chamber 14 of shape formations on the valve base 1.Circular protrusion 27 is formed on the bottom that constitutes chamber 14 at this valve, prepares to be embedded in the valve shell of aftermentioned.The axle core of this circular protrusion 27 is provided with the fluid feed path 11 of leading to above-mentioned fluid supply main line 10.And the side oral area is screwed with the usefulness nipple joint 20 that spues on this valve formation chamber 14.This spues and forms moving back of gynetype with side end face within the nipple joint 20 and pull out shape.And spue with on the nipple joint 20 above-mentioned,, form copper tube joint, be provided with the hole 21 that spues in the inboard in this nipple joint foreign side along its axis.The side oral area is formed with the valve seat 22 of the following changing valve 23 jut 23b of butt within this hole that spues, and possesses the fluid closure member 30 around valve seat simultaneously.Be equipped with valve shell 15 in the above-mentioned valve chamber 14.Be provided with the valve chamber 12 of end shape on the valve shell along shaft core line.Be formed with under this valve chamber the subsidy chamber 12 of the path of accommodating aftermentioned helical spring 24 ', also can become the path of accommodating fluid.Under the above-mentioned valve shell 15 round above-mentioned subsidy chamber 12 ' be formed with the circular groove of the circular protrusion 27 of chimeric above-mentioned valve base 1.The bottom of this circular groove possesses sealing material 33 is arranged.Side end face 31 forms and can be fit to the above-mentioned male shape that spues with nipple joint 20 inner side ends 32 and move back the face of pulling out on the valve shell 15, and be provided with radial more than bar guide groove 17.And be formed with the longitudinal furrow that is communicated with above-mentioned guide groove 17 at the side face of valve shell 15, can become path 18.Moreover, if when within the side face of this valve shell 15 and valve formation chamber 14, being formed with excessive annular spaces between wall, can omit above-mentioned longitudinal furrow.Simultaneously, the angle under the valve shell 15 is cut into circular-arc, has just formed annular chamber 16 in the bottom of valve formation chamber 14.Moreover this valve shell 15 also can be used molding synthetic resin.

As above-mentioned, be provided with changing valve 23 in the valve chamber 12 of equipment valve shell 15 and formation.This changing valve 23 is the umbellate form spool of being made by flexible materials; and; have the axial region of the axle core that supports this umbellate form spool; and be formed with in order to protect this umbellate form spool not constituted by the part of the bead that pressure influenced in downstream side, side is by side on the above-mentioned umbellate form spool outstanding (23b) on this part.This jut 23b is sticked in the valve seat 22 of above-mentioned hole 21 oral areas that spue, to open and close the above-mentioned hole 21 that spues.The peripheral portion 23a of umbellate form spool is subjected to this fluid pressure as the time spent and to the contraction of axle core, allows fluid to pass through in the fluid inflow.Be subjected to acting on umbellate form spool exhaust end again and be the hydrodynamic pressure on spool top and be crimped on wall within the valve chamber 12, stop adverse current towards fluid feed path 11 sides.Moreover if the machine of low-pressure applications, above-mentioned changing valve 23 will be as the conventional example of Fig. 2, and available flexible material forms and comprises jut in interior integral body, if the machine that fuel feeding fat is used then can omit without sealing material 30.

Metering device for storing liquid 3 is to be formed in that the side end face becomes to hollow out in the liquid storage room 13 of shape processing under the valve base 1.The oral area of this liquid storage room is screwed with plug 28.Be integral the oil hydraulic cylinder member 29 that shape is equipped with the thin footpath of side in liquid storage room 13 in this plug.Spuing remains in the above-mentioned oil hydraulic cylinder member 29 with plunger 25, and simultaneously, the end of tail is held in the state in the hole of the axle core that connects above-mentioned plug 28 thereafter.Above-mentioned spuing is formed with bead with plunger 25 at head, and this bead has becoming the effect that spues with the spring seat of spring 26.Spuing ties up to above-mentioned spuing with the spring retainer of the head of plunger with spring 26, and within the above-mentioned plug 28 between the square end face, is installed between oil hydraulic cylinder member 29 outer circumferential faces and liquid storage room 13 inner peripheral surfaces.Moreover this spues and makes its size be fit to footpath within the liquid storage room 13 with plunger 25 shown in the conventional example of Fig. 2 as shining, and omits oil hydraulic cylinder 29, just can obtain the more machine of discharge-amount.The textural place of fluid leak-off that should prevent suits to possess then that sealing material is arranged.

Can understand that from above explanation therefore the present invention, has following effect in manufacturing and function because of the component part equipment valve shell at release reaction conversions valve gear.

(1) because the

through hole

19,19 that should be processed to form in valve base 1 ' length can shorten significantly, But thereby the moulding of mat casting die, its productivity has remarkable progress.

(2) because can consist of the valve shell of the major part of switching valve by the mat metal mould forming, so the processing dimension required accuracy can be guaranteed, the goods of unification can be produced simultaneously.

(3) because can be arbitrarily and rationally set structure and the shape of valve chamber and periphery thereof, therefore can eliminate unnecessary space, to the dosing distributing valve that does not have air trapping is provided.

(4) pass through through hole because can set, path, therefore guide groove and be directed to the direction of flow in the hole that spues can stop in switching valve section to produce turbulent flow, uses to provide to produce that to result from the action of switching valve bad and produce the dosing distributing valve of the excellence of the bad phenomenon that spues.

(5) because (1), (2) described progressive is arranged, the production cost of this dosing distributing valve is the about 60% of traditional person, and the goods of cheapness can be provided.

Claims

1, a kind of dosing distributing valve, central position laterally sets the accommodating fluid main line down on valve base, both sides under on this main line, with center line on same straight line, and like that perpendicular to above-mentioned accommodating fluid main line, set the switching-valve arrangement of the release response type that uses the umbrella shape spool respectively, and use to spue and use the metering device for storing liquid of plunger, the accommodating fluid path of the inlet side of the valve chamber that is communicated with above-mentioned accommodating fluid main line and switching-valve arrangement is set, and set the through hole of the valve chamber downstream side that is communicated with this switching-valve arrangement and the liquid storage room of metering device for storing liquid in the position, side of not breaking above-mentioned accommodating fluid main line, it is characterized by, switching-valve arrangement constitutes indoor at its valve, there is valve chamber to be formed at a core, and be contained in spuing of above-mentioned valve formation chamber oral area with spiral shell and use nipple joint, the fixed upper end face is formed with guide groove and forms the valve shell of path at side face, and set the hole that spues at the above-mentioned axle core that spues with nipple joint, square opening portion forms the valve seat with prevention counter flow action type within it simultaneously, in above-mentioned valve chamber, be formed with the protruding part that is connected to above-mentioned valve seat and has the prevention counter flow action, be equipped with the changing valve of the umbellate form spool that around it setting-in made by flexible materials simultaneously, side has helical spring under this changing valve, and the lug boss of above-mentioned changing valve is crimped on the valve seat in the above-mentioned hole that spues.

2, a kind of dosing distributing valve described in claim 1 is characterized by, and in valve shell and the mutual butt engagement portion that spues with nipple joint, spuing is the face of pulling out that moves back of female shape with the engagement portion of nipple joint, and the engagement portion of valve shell is the face of pulling out that moves back of male shape.

3, a kind of dosing distributing valve described in claim 1 is characterized by, and changing valve is made up of the umbellate form spool that the use flexible materials that contains jut forms.

4, a kind of dosing distributing valve described in claim 1 is characterized by, the sealing material of the valve seat of side equipment pliability in the hole that spues.

5, a kind of dosing distributing valve described in claim 1 is characterized by, and constitutes between the mutual butt snap-latch surface of end face of the bottom surface of chamber and valve shell the sealing material of setting-in pliability at valve.