DE1425419A1 - Delivery system for fluids - Google Patents

Description

WALKER MASTOFACTURING COMP.

Delivery system for fluids

The invention relates to a delivery system for fluids with a pump, a storage container and an or several interconnected and cooperating metering devices. Such systems can "for example are used for the lubrication of motor vehicles or larger machinery, »

In order to achieve a satisfactory lubrication is it is extremely desirable that such systems automatically share a number of delivery α at regular intervals; measured moons of a lubricant or other fluid. The systems must be light on -'iie delivery of various amounts of lubricant different points can be set and changes in the delivery frequency and the size of the individual lubricant batches allow, especially »if the systems are made usable for different types of mash should"

909 8 12/0037

BATH

Such an adaptation is not possible with the known lubrication systems _S s eliminated in that a storage chamber for storing a Druckfluidumcharge is provided in the metering device, in the connection an overpressure valve is switched on, which relieves this line of excess pressure when a predetermined pressure level is reached, the metering device is provided with an outlet and in the metering device A valve is connected between the storage chamber and the outlet opening which prevents the release of ELuldum from the storage chamber to the outlet opening when pressure occurs in the connection and / when pressure is released in the connection prevents the release of ITuidum the storage chamber to the outlet opening caused .. .. _J; - -

The following is a preferred Ausftüirungsform of the invention with reference to the drawings besehrieben- It show:

3-.

BATH

Fig. 1 is a partially schematic side view, partially in cross section of a system with the features of the invention, with a device for Change in the delivery frequency of each. Lubricant batches as well as changing the Size of each individual batch, the structure of the pump, the safety valve and the metering device represents

Pig. 2 shows a cross section through a pump valve arrangement during a pump stroke,

FIG. 5 is a representation similar to FIG. 2, showing the position the parts "shows on the intake stroke, and

Fig. 4 is a partial cross section through the upper part of a Metering device in which the membrane is in an expanded state.

The embodiment of the invention shown in the figures has a pump 612, one in connection therewith standing storage container 613 as well as several metering devices 614, which dispensed from the pump 612 Periodically dispense lubricant to not shown or other pick-up points.

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The pump arrangement 612 has a body 615, on one side of which an inlet opening 616 communicating with the storage container 613 via a line 617 is provided. This opening 616 leads to an annular chamber 618 provided in the body 615, from which a passage 619 with a slightly smaller diameter than the chamber 618 branches off towards the top. This passage leads via an intermediate piece 621 to a conical pump chamber 622, the upper end of which is closed by a membrane 623. The circumference of this membrane is held in place by a plug 624 screwed into the top of the housing 615. A plunger piston 625 is slidably mounted in the member 624 and carries at its lower end a conical member 626 which can be brought into contact with the membrane 623. A nut 627 is screwed onto the plunger piston 625, through the setting of which the length of the stroke of the piston which can be moved back and forth by a suitable device can be adjusted. ER * clearly enough, pushes the conical · end 626 of the piston 625 during its downward movement: out of this .- the membrane 623 in the Ka _m mer 622 down, whereby liquid; printed · chamber addition, * Conversely lifts the diaphragm, · ;. * 623 when the pressure on the piston 625 is released, it moves into the position shown in FIG. 1. ■■ _; .,;, -.>'■ .. » _t

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An intermediate element 628 is built into the valve body 615, its top 629 upwards into chamber 618; protrudes " This extension 629 is of a tubular shape. The sleeve 631 is made of flexible material the lower end of which is an outward-facingB · Sjcimltiear- is seen, with the help of which & the sleeve between the limb

628 and the housing 615 is held in place. The length dear Sleeve 631 is so "dimensioned that it fits exactly into the bore 619 and the approach in the unloaded state

629 exactly surrounds.

In one im; Limb-628th provided central. Bore is a check ball valve 632. ,, the; duareh a leather 633 upwards against his over axial— and Cross passages 634- with the outside. of the approach 6ZS related seat is pushed * The Eeder 633 is in an open at the lower end of the link 628 axial bore 635. The member 628 forms one Seat for the: made of flexible material; atell.te Via_-pressure ball valve 636 ',. ·. its tip; eim Glegenlagea ?: for the lower * EMie · dea? - Eedear 633; bildfe. «.

The: Ub ^ r; d; rua} DPentil 636 is; ian revamped » Bmie 637 des; GEieda; 628i arranged * umä; bssitai ». ni cs?

whole: that. Ereiifee ,, so daff it in, gpseÄasseneiiL Zastandx only thev our end; den Beörnung :: 655 fterüTErr; t _r an: with help; one: in; the (lenmiffe Sitöjif ens. 639 precisely fortified Elanselr 638: auf!., - works int üHieaien. dlesea Sifeogfens; du32ßto. edäiei ifedesc S4111 au £ v ^ rrfeg; edinängii; ^ ax deKren: DimcSr dxtrcfL e End wi: öcende- i ^ na ^ Bllsciiraiibe 6 ^ Z verändieartwe ^ Eden: ErsientllciieiEweiser wlifet: the "bei dear des ^r Obea ^ mieforeaiidlls; aaia seinear iir Hg«, t Stellaing ^ atfWäarts durcü düe düfrcomgär 635; ^ e ^ clrältnlsmässig: gasGiÄsre WLsdae, desi scnlagyentlla; Eä n _fr lake Dae dxe entire · on this wlrkende _r it open- itaXteiofe Kra ^ i ea "here / mrfeere EeiX 6SF of (member 62S is; iii & eir opening 64Φ and eiznee Eeüiung; 644- nii "fe derr Eemtung '6Ϊ1Τ" bundEeaa: ,, wadMEcfe ein HüeJELeiiaing: for;' das SöntHiBararirfeteiE lael g®öffriH *: em: teerjSrxte & v-eirtil ,. liaea ^. gsrisi

Kestr Z * ttsxi & en ± eiIL des G311edm 62® weais ^ tr inefirerei miSti Rlngfeammer: 646s in VerSlndäaaig; srfeehende EadlaäEdur: enfEä% B? e7 645 Bss £ » _s Mm Kamnre-rr 6 ^ C stefcfc iaärjegcsesEfei mijti efnfia? in ^: -

in:

Tifimr poured 35ed £ teungr © ί® on the eäfmee ΗβίΪΕ®

U25419

the metering devices 614- also in other ways than by the series connection shown with the pump 612 connected.

The individual metering devices 614 each have one provided with an inlet opening 651 *, a working or discharge opening 652 and an outlet opening 653 Body 649 on. The work port 652 is through a conduit 654 with a bearing (not shown) or a other receiving parts for the measured by the device 614 Fluid connected, while the outlet port 655 via a line 655 with the inlet port of the in the Row as the next following metering device 614 in connection stands.

The aligned openings 651 and 653 are connected to both ends of a central Tr he amm 656 in combination, going from the group consisting of an open at the upper end of the body 649, slightly narrower bore 657 than the chamber 656, ^ Ie top of the body 649 practically flat and has an annular flange 659 to which a membrane 658 provided with an upwardly projecting part 660 is attached. This part 660 can pass through the central opening of a dome-like cap or cover 661 covering the membrane. The illustrated embodiment

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know; t a kr ^ BfSriiäges KLmsmgli & a- · && £ _; aai ,, with the help of the llismibasan £ 58 and the! cap & 6: 1 on JGSrp ^ ^ © consolidates wjearcLeai kSnmein * sa> that des? Jtassepteil, 'dte ^ bran 658 is pressed against the plan 659 .. The top of the body 649 is stranded with an annular groove, ao that through the membrane 658 containing this recess, the bore 657 and the space between "the, membrane 'and a storage recess or chamber 663 is created in the body 649 * ikrsielatllciterwejLg «Ipm Δϊφ. ifaeinfer ^, 6:58 according to: ^ ig »4 enlarges öi.er _;
This "chamber increases in size in the ruling chamber; Intek ijei one; S der Itentecaa izuaaimmk * The cap &% beMsgung jäer iiembran, ®o #al in spite of pressure ibsX Every iSharge" ine v ^ rgegejbene Jlmidiionmen «Sagesammelt wJLpcU accordingly the vön ^ eat tung 614 a3igegefeene Mutduamienge« aureih ^ sranderiaaig SrÄfe # ea ^ EÄpjpe; € 61 iodear € urch liaal einer ^

messeirs; for <Ü »liemtaan β & Β uad äen ® © Βο & 1 £ @ Β8« η € βιι l # iL3. of the body, the luffless correction, can be changed as a visual change _; £ ta »thank you!

Of course, instead of the one shown Membrane device other pressure-storing means can be provided

In the chamber 656 is one extending into the passage 657 elongated ring sleeve 664 made of rubber or other resilient material is provided, which is in unloaded State with its outside exactly on the inside wall * of the bore 657, but a certain one Distance from the wall of the chamber 656 and thus forms an annular chamber with her in this way. At the bottom At the end of the body 649 there is an insert 665 which, for the purpose of holding the sleeve against one at the lower end of the Sleeve 664 abuts shoulder 666. Insert 665 has one with opening 652 in communication axial passage 667, which continues at its upper end in a radial passage 668, which in turn with the outside of an upwardly directed extension provided on the insert 665 in the tube 664 669 is in communication. The length of this extension 669 is dimensioned such that it is the upper end of the chamber 656 not reached, so that the sleeve 664 Von you can continue to expand when the pressure in the socket exceeds the pressure prevailing in chamber 656

909812/0037 '- ₁₀ -

It is assumed that the delivery system according to the invention for fluids initially with oil, light fat or; is filled with another fluid, and the individual parts are in the position shown in FIG. ^{3 1 Ig, 1.} When the plunger 625 then moves downwards, eluidum is pressed from the chamber 622 via the passage 621 and the bore 619 into the sleeve 63.1, as a result of which it expands in its middle section as shown in Figure 2 and the fluid into the passage 634 past the ball check valve 632 and through the bore 635 into the passages 645 and the & ing chamber 646. The pressure relief valve 636 is kept closed by the spring 641, since the initial pressure in the system is insufficient to open the valve 636. As a result, the fluid is forced through the opening 647 and the line 648 into the inlet opening 651 of the first metering device 614 *

Under the action of the pressure in the chamber '656 of the metering device, the sleeve 664 contracts against the extension 669 of the insert 665, but the upper portion of the sleeve 664 is deflected inwardly so that the fluidum upwards into the Bore 6 * P7 ^{rj v:} - can flow and collect in chamber 663. As a result, the memorandum 658 begins to expand as shown in Fig. 5, so that the pressure in the chamber 663 rises

909812/0037 -11-

664 is pressed against the Burclilass 6.68, fcann toein dum flow into the & b ^ beöffzaing 652 line, rather the pluidum around the -Haffe 664- lierum in the Jsctslaß-

6-55 * from. where to look. the itäelisiie '614 the Ke ± lie arrives; "

eex laxtdifcalften 625 sovjeii; Aljwariisljiegt that the fat 62t the slisd € 24 e ^ aieiclit is moved upwards again, where the membrane 623 closes and in the Earnnter 622 a ffeilvaloiroE produced. Hierdiarca pulls out the socket. 631 on the extension 629 together, wodurcji addi ^ licli yiuidom into the opening 616. edge at the contracted upper end of the hoof 63t into the caromer 619 » <iBU passage 621 and the Kamnier © 22, as shown in I ¹ Xg * 3 "The stop valve 632 prevents a backflow of J ¹ IuXdUm from the metering device 614 during the upward stroke of the" ³ Jiamca piston 625 "In this way an overpressure is created in the metering devices: upstairs * in the X on the next 3 upward left lik: onaens 625 is each further pressed into the metering devices 614, where the membranes 65S are further expanded and, in the cozy halls 663 of the individual

In each case build up the harvested, under Daruek Fluxdumenarge · ^;

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This continues until "the pressure in the Bore 635 has reached such a value that -he Force of the spring 641 to overcome and fluid is able to push into the chamber 637, This fluid presses on the entire face of the pressure relief valve 636, whereby this opens completely. In this way, the bores 635, the conduit 648 and the chambers 663 of the Metering devices 614 are quickly relieved of the pressure prevailing in them, and in the line 648 and the Excess fluid located in bore 635 is returned to reservoir 613 via line 644 will. . . - '., - ■ -

When temporarily reducing the pressure in the Chambers-656 of each. Metering devices 614 opposite the pressure prevailing in the chamber 663, the upper section of the sleeve 664 expands until it reaches the Wall of the hole 657. The pressure generated in the bore 657 by the expansion of the diaphragm 658 causes it then the central portion of the sleeve 664 expands into the chamber 656, causing the two ends of the passage 668 come into contact with the fluid present in the sleeve. This pulls the membrane 658 and forces a charge of fluid out of the bore 657 through sleeve 664, passages 668 and 667 and opening 652 into conduit 654.

909 81 2/003 7 ^? " ¹⁵ "

After the pressure in the chamber 663 has dropped sufficiently, the sleeve 664 returns in preparation for the Accumulation of a new charge of fluid in the metering device 614 back into its rest position shown in FIG. 1. As soon as the pressure in chamber 637 has dropped that far, that the each 64I close the pressure relief valve 636 is able, this also returns to its closed rest position. The plunger 625 is set to reciprocate Movement continues and builds up the next fluid batch in the individual metering devices 614.

It can be seen that the membranes 664 of the individual metering devices work together with their adjacent structural parts than automatically controlled three-way valves that respond to the pressure difference acting on them. During the pumping portion of each duty cycle, the pressure in the individual inlet chambers 656 is the same or greater than the pressure prevailing in the storage chamber 663, so that the passage 668 through the sleeve 664 surrounding it is closed. After the pressure in the chamber 656 has dropped by opening the pressure relief valve 636, the The connection between the chamber 656 and the bore 657 is closed, since the upper section of the tube 664 expands, while the expansion of the intermediate

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When the sleeve is cut, the ends of the passage 668 are released, thereby dispensing the fluid to the bearing will.

The metering devices over a period of time total amount of lubricant or other fluid supplied is determined by the frequency of movement of the plunger 625 and the length of its stroke »The Emptying frequency for the metering device 614 and the size of a dispensing batch can be changed by adjusting the spring 641 with the aid of the plug 642. For example can reduce the size of the fluid charge built up in a metering device 614 by relieving the .Peder 641 can be selected to be relatively small, so that the pressure relief valve 636 is already relatively small when it reaches a low pressure opened at a given 3-ump output this causes an increase in the delivery frequency, so that the total amount of fluid dispensed by the metering device over a certain period of time remains constant. Conversely, an increase in the force exerted by the spring 641 increases the force in each metering device built up batch before opening the pressure relief valve 636, but in this case the opening frequency and thus the dispensing frequency of the metering device is correspondingly lower

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The device according to the invention 614 ¹ OGiBi occurrence of a partial obstruction, "for example at a bearing connected to a dispensing opening 652, builds up a greater pressure, whereby this obstruction may under certain circumstances be removed and a free and unobstructed flow of liquid can be maintained. Work in this regard the individual metering devices 614 are independent of one another and do not affect the normal operation of the entire system at all.

From the foregoing description it can be seen that the invention provides a simple and effective lubrication system was created that automatically provides a regulated lubricant supply to all bearings of a motor vehicle or the machines one; industrial plant ensures without these parts requiring individual maintenance «

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Claims (1)

Pa te η t a η s ρ r u ο h Metering valve for dispensing measured lubricant " quantities at regular intervals, which has a housing body with 'flush inlet and outlet openings and one transverse to these openings arranged, the housing body axially through- ' has a dispensing opening that places it, wherein a cylindrical central chamber is formed in the housing body, in which a resilient sleeve-like cuff is arranged, characterized in that, transversely over the top of the housing body (649) a τοη a dome-shaped cap. (661) shielded membrane (658) is attached, which has a projection (660) has, which is provided in the cover cap (661) Able to enforce opening and provides a visual indication of the operation of the internal valve and that the sleeve-like cuff tire (664) such Outer diameter has that, in its rest position, it is narrowly in a position at the upper end of the chamber (656) provided bore (657) and an extension (669) provided in the lower end of the chamber an insert inserted into the housing body (6,49) -17- - '9098 12/0 0 37 - ■ New documents (Art 7 § I - =. I "'·> sentence 3 of the Änäerungsgee. V. 4 9. W * \ Set (665) overlaps so that the pressurized fluid flowing in through the inlet opening (651) presses around the cuff (664) against the extension (669), thereby flowing upwards and collecting below the membrane (658), whereby it can partly around the cuff (664) flows into the outlet port (653) until the diaphragm is fully expanded and the pressure allows the cuff (664 ^{) to expand against the base of the chamber -} (656) so that a charge of fluid flows through a space between the inside of the Cuff and the extension (669) is pressed into the dispensing opening (652). 909812/0037