DE1942591A1 - Air-permeable filling device for liquids - Google Patents

Description

AK / ή

Ämiielderin: Company U.ü.ü. Filters (Hydraulics) limited P.O. Box No. 3y industrial estate 'i'hetford, Norfolk,

"Air-permeable filling device for liquids"

The invention relates to filling devices for Liquids. Such .ainfiilleinrichtungen For example, it is used in the oil tanks of hydraulically operated 1-Iasc.iiines, when the fluid level is variable is, ..as for example due to the different oil requirements caused by hydraulic cylinders or other parts of a machine, precautions must be taken to ensure that ü Allow air to enter and exit to avoid the Compensate for changes in fluid volume.

jjs is useful if the air passage channel is provided at the usual filling opening of the container, .inn, so days instead of two fittings only one is required for the container. In addition, it is very desirable that the air entering the container when the liquid level is to the left is very clean, because impurities that would be added to the liquid, e.g. normalerv.eise viole Flässigkeitr; seals and minimum tolerances hour joti · damage or render inoperable sr so _0th.

009814/1316

Iäs is the object of the invention to provide an '.- improved Construction of an air-permeable i-infill device create at the only impurities that can enter with the air, are so fine that they float in the air and that they are harmful in terms of damage -Influence on the machine parts can be disregarded.

The -crfin ^ ur 'relates to an air-permeable ^ filling device for liquids with a filler ^{neck delimiting a δinfi:} 11 opening and a lcsbcr. axially πάt the "filler neck in j ^ inrriff to bring Yersc-ilusselement.

The invention consists in the fact that the wear element has means that form a continuous otrömun_skanal for air in it, which leads from the outer atmosphere to the filling opening when the sealer is attached to the filler neck and that is The air flow duct consists of a first part, in which the air flows in the axial direction, and a second part, in which the air flows in the opposite axial direction.

The air flow has to cover a tortuous path, as there is no direct access for Yerunreini;} UJ% en moving under the force of gravity. Preferably, the entangled "ESS is made such a part of the" is that regardless of the spatial position of the Verscr.lusseleraentes atrömungskanals such that the flow of air upwardly against the "MPACT of gravity must flow.

0098U / 13T6

In a preferred embodiment of the invention, the Yex 'opening element has an outer wall and a filter element which is oxidized at a distance within the outer wall, and there are openings in the closing element radially inside and outside the filter element, which openings in the same direction i..it are arranged axialeiu distance from the filter element, a portion of the Ströinun ^ between the Ausseiiwand and the filter element and the other part of the un _t slcanals btrö :: -;. Ekanals Filtex within the ^a element to form.

Lie Aus3ön \ vand uni the filter element can do both be cylindrical and concentric, and in a preferred one On the other hand, the closure element is a floor flange on, in which the radially arranged inner and outer openings are arranged, and sits the i'ilterelef.ent 2wischei: de * :, iodenflansch and the heat of the closure element.

At i.infüll.? Tutj; 3n "5r..nen curve surfaces and on the closure element K-it there can be curve surfaces ^ usa: ra: ienv.working tongues in front of _v ; e.-chen, so that the verse: lus3element ri ⁴ : the filling in ^ in ^ ^ iff jfcL'c .en v.ira, v.enn dus closure element _each;; envber the -inf'.illstut ^ s turned ill...

-iei eir.er b "v r.:v _H ter. Anorlivaiv is ixe ^ iniüll opening the same ;; t: r.it eir.e ::; iil ^ vr Vtrsehcr., ceisji · -. ·! ". ', eise eir.ei .: vcr-2Ugsv.eise ubnc-r ^ -b ^ ien liquid fil" er, which is arranged below and above the iinfllllöffnunj. This liquid filter is also located in the air inlet duct, so that it serves as a second protection against the ingress of foreign matter.

0098U / 1316

ORIGINAL

The outer wall of the closure element can be designed as a handle. A seal can be provided between the filler neck and the container wall so that, when the filler device is attached in place, no liquid can leak from the container unless it, which is very unlikely, is reversed through the winding air duct flows. However, the flow channel is always open for the suction and discharge of the air overall \. . _f

In the drawing showing an embodiment of the invention shows is

1 " ¹ Xg. 1 is a perspective side view of the

according to the invention, air-permeable filling device in dismantled! State, and ffig »2 an axial section through the inventive

air-permeable ■ filling device, wherein the 2eile are fixed to a tank wall and the cap is attached to the filler neck. "The filling device is composed of a wall of a tank \ W -to fastened filler i ^1, which forms a einfüllcffnung, and a cap C, which can be brought into engagement with the filler neck and which is held in place by a chain.

The filler neck has a side wall 1 which a filling opening 2 is limited and provided with an annular flange 3 which has 4 holes. Through the holes 4 you can Metal screws 5 are guided, which the .Filler neck

.009814 / 1316

BAR

set on the wall. Around the inner circumference of the side wall 1 there are 2 diametrically opposite one another at the ni filling opening ICurvenf laugh 6 provided with diametrically opposed Forceps 7 of the cap can work together so that a gradual tightening effect is achieved when the cap, when viewed from above, is rotated clockwise.

The cap Cf consists of an outer wall 3, which Has the shape of an inverted cylindrical cup. In addition to the edge of its open interior, however, there is a slit G-rundiVand provided, which consists of a radial flange 9. Between the flange 9 and a shoulder 10 of the outer wall 8 sits a cylindrical air-permeable porous filter element 11. In the middle of the flange 9 a circular "recess 12 is provided, which extends axially extends and with which a curve strip 13 is riveted, the two radially projecting ends of which form the tongues 7, which cooperate with the cam surfaces 6 to rotate an engagement between the cap and the filler neck to manufacture. Between the G-round wall and a flat upper one

1 ¹ part of the side wall 1 is a washer. The flange 9 has openings H and the recess 12 openings 15, which serve as a flow channel for air that vo ;. open end 16 of the outer wall upwards through "the openings 14 of the flange 9, then through the porous filter element 11, then downwards and axially through the interior of the filter element 11, then through the areas 15 of the recess

12 and finally into the opening 2 of the filler neck F

0098H / 1316

flows. Accordingly, the flow channel iV-.v the air via the filter element 11 remains constantly open, even when the cap C is attached to the filler neck F. -s.-ibt.! So there is no direct access channel for foreign matter from the outside into the filling opening 2, since the air has to pass through an intertwined path, including the filter element, before it enters, so that the only contaminants that can penetrate are those that have not yet detached themselves from the air even after the tangled "away" and

^ which are so small that they can pass through the porous filter element, can penetrate.

The .Einfüllstutzen in connection r "it a fluid filter 17, the inside _de: l'SNK's sitting, cht arm shows on the tank wall W &. For this reason, the liquid filter has a flange 18 which corresponds to the flange 3 of the filler neck, the filler neck and the liquid filter are attached to the Sankvand vV together with a jointed seal. The liquid filter performs its normal function, oil that enters the filler hole

* is filled in, too. filter.

0098U / 1316

sas

Claims (6)

Patentans κ --'- ( \1. Jj-aft passage ire Iiinf "lleinrichtun * 'for Plüasickeiten with an a ^ inf'Hoffnung be.- reriz ^ naen -filler neck and a closure element that can be detached axially with de:.: Filler neck into engagement, characterized in that the L- the locking element I-Imittel which in it form a continuous otröinunrskanal f "Ir air · which leads from the outer atmosphere to the .äinfüllöff iiung (2.) when the closure element is attached to the ^ scunal for air consists of a first part, in which the air flows in the axial direction, and a second part, in which the air flows in the ent.; i, ;; en.-eset £ te ^ xialrichtung. 2 .. üinfülleiruichmn ^ according to claim 1, characterized ^ ekennzeiclinet that the versc.ilusseler.ent has an Aucsenv-and (3) and a nit distance within the Austin wall a: _t reordered3 filter element (11) and that i " . Closing element radially inside Mrel outside the ί iltercler.entes .inr ^ n (1?, 1 · ',) are provided in the jleic ".: En uni- ir.it -xialcni distance vcr. ? iltv-rslen: ent (11) ineocrinet are to one. Part of the otrörrmn ^ skanals between the Outer wall (^) and de: - i'ilterelement and dt-n other leil des Strö ::. unrs': -: - ar.als inside- · It ios Filtc-relei: to form entes. 3. EinfülleIuricht.mg r.ach ^ nspiv.ch Z, characterized di-ss iie Aue st ir. *. and (3) uni the filter element (11) irylindrisor. and concentric sir.f. € 09814/1316 BAi 4. Filling device according to claim 2 or 3, characterized characterizedι that the closure element has a bottom flange (g), in which the radially arranged inner and outer openings (15 »14) are provided, and that the filter element (11) between the bottom flange (9) and the Rest of the closure element is seated. 5 »Filling device according to any one of the preceding claims, characterized in that on the filler neck Cam surfaces (6) and tongues (7) which interact with these cam surfaces are provided on the closure element, eo that the closure element is pulled into engagement with the filler neck when the closure element is opposite the filler neck is turned. 6. Filling device after any of the preceding Claims, characterized in that the filling opening (2) a liquid filter (17) is assigned » ÖÖ98U / 1316