FI90227C

FI90227C - Overflow Protection

Info

Publication number: FI90227C
Application number: FI913977A
Authority: FI
Inventors: Veikko Rajamaeki
Original assignee: Serresen Oy
Priority date: 1991-08-22
Filing date: 1991-08-22
Publication date: 1994-01-10
Also published as: FI913977A7; FI913977A0; FI90227B

Description

1 902271 90227

YlitayttOsuoj aOlitayttOsuoj a

KeksinnOn kohteena on ylitayttOsuoja imulaitteella tai vastaavalla taytettavaa kerayssailitttS vårten, joka 5 ylitayttOsuoja kasittaa kerayssailiOn kannessa olevan tai kannen yhteyteen sovitettavan, imuiahteen liitannan peittå-van, ainakin yhdelia ilma-aukolla varustetun tiivistelevyn, tiivistelevyn alapuolelle sovitettavan kuoren, joka rajaa kerayssailiOn sisatilasta osan omaksi olennaisesti erilli-10 seksi tilaksi ja jonka kuoren alaosassa on aukkoja ilman virtaamisen mahdollistamiseksi ja kuoren sisaan sovitetun, pystysuunnassa kuoren sisalla vapaasti liikkuvan kohon, joka on sovitettu yiaasennossaan painautumaan tiivistelevya vasten ja sulkemaan siinå olevan ainakin yhden ilma-aukon. 15 Tailaiset ratkaisut ovat nykyaan yleisia ja niita kaytetaan eri versioina monenlaisia.The present invention relates to an overfill protection for suction devices filled with a suction device or the like. -10 sex space and having openings in the lower part of the shell to allow air to flow and a vertically free-standing protrusion inside the shell, which in its y-position is adapted to press against the sealing plate and close at least one air opening therein. 15 Such solutions are common today and are used in many different versions.

Aiemmin tunnettujen ratkaisujen yhteisena huonona puolena on ollut mm. se, etta ylitayttOsuoja ei sulkeudu tiiviisti, vaan vuotaa ilmaa ja ei siten pysayta nesteen 20 virtausta kerayssailiOon. Aiemmin kaytettyjen ylitayttosuo-jien sulkeutuminen ei ole myOskaan ollut riittavan herkkaå roiskeille ja vaahdolle, vaan roiskeet ja vaahto ovat paas-seet usein liian helposti ylitayttOsuojan lapi putkistoon. Aiemmin tunnettujen ratkaisujen huonona puolena on ollut 25 lisaksi niiden suuri koko ja monimutkainen rakenne, joka on aiheuttanut epavarmuutta laitteiden toiminnassa. Aiemmin tunnettujen ratkaisujen kalliit valmistusmateriaalit ovat olleet myOs syyna suuriin tuotantokustannuksiin.The common disadvantage of previously known solutions has been e.g. the fact that the overfill protection does not close tightly, but leaks air and thus does not stop the flow of liquid 20 into the ceramic tank. The closure of previously used overfill guards has also not been sensitive enough to splashes and foam, but splashes and foam have often too easily escaped into the piping. A further disadvantage of the previously known solutions has been their large size and complex structure, which has caused uncertainty in the operation of the devices. The expensive manufacturing materials of previously known solutions have also been the reason for the high production costs.

KeksinnOn tarkoituksena on aikaansaada ylitayttOsuo-30 ja, jonka avulla aiemmin tunnetun tekniikan epakohdat pys-tytaan eliminoimaan. Tahan on paasty keksinnOn mukaisen ylitayttOsuojan avulla, joka on tunnettu siita, etta koho on sovitettu rajaamaan sisåånså osan kuoren sisatilasta ja etta kuoren pohjapintaan on sovitettu kahdenkokoisia aukko-35 ja, pienemmat reunan laheisyyteen kohon rajaaman alueen 2 90227 ulkopuolelle ja isompi, ainakin yksi aukko keskiosaan kohon rajaaman tilan kohdalle, jolloin pienemmat aukot on muodos-tettu niin pieniksi, etta nestepinnan noustessa kuoren ala-osan tasolle neste virtaa kuoren sisaan olennaisesti aino-5 astaan kohon kohdalla olevien aukkojen tai aukon kautta ja nostaa samalla kohon yiaasentoonsa, jossa se sulkee ilman paasyn imuiahteen liitantaan.The object of the invention is to provide an overfill protection by means of which the drawbacks of the prior art can be eliminated. The overflow guard according to the invention is fastened, characterized in that the embossment is adapted to delimit a part of the interior of the shell and that two sizes of apertures are provided on the bottom surface of the shell, smaller to the edge proximity to at least one to the space bounded by the embossment, the smaller openings being formed so small that as the liquid level rises to the level of the lower part of the shell, the liquid flows into the shell substantially through the openings or aperture at the Aino-5 step to the suction supercharger connection.

KeksinnOn mukaisen ylitayttOsuojan etuna on ennen-kaikkea se, etta nesteen paasy imulaitteeseen tai sen ja 10 kerayssailiOn v3liseen putkistoon estyy erittain tehokkaas- ti. KeksinnOn mukainen ylitayttOsuoja pysayttaa luotetta-vasti nesteen virtauksen kerdyssailiOOn sailiOn taytyttya ja estaa myOs nesteen vaahdotessa vahdon paasyn imulaitteeseen ja putkistoon. KeksinnOn mukaisen ylitayttOsuojan etu-15 na on edelleen se, etta ylitayttOsuoja ei sulkeudu akilli-sesta ilmavirtauksesta esimerkiksi silloin, kun nesteen tu-loliitantaan yhdistetty elin tukkeutuu tai suljetaan ja elin irrotetaan ko. liitannasta imuiahteen ollessa paaila, jolloin kerayssailiOOn ja sita kautta imuiahteeseen virtaa 20 akillisesti pal jon ilmaa. KerayssailiOssa tapahtuva nesteen roiskuminen ei myOskaan sulje keksinnOn mukaista ylitayttO-suojaa ennenkuin sailiO on taynna. KeksinnOn etuna on myOs se, etta se voidaan tehda valmistuskustannuksiltaan hyvin halvaksi, jopa kertakayttOiseksi, joten keksinnOn kayttOOn-25 otto muodostuu edulliseksi.The advantage of the overfill protection according to the invention is, above all, that the ingress of liquid into the suction device or the piping between it and the ceramic container is very effectively prevented. The overfill protection according to the invention reliably stops the flow of liquid into the winding tank when the tank is full and also prevents the foam from flowing into the suction device and piping during foaming. A further advantage of the overfill cover according to the invention is that the overfill cover does not close from the achilles air flow, for example when the member connected to the liquid supply connection is blocked or closed and the member is removed. from the connection when the suction charge is in place, whereby a large amount of air flows 20 through the ceramic tank and through it into the suction charge. The splashing of liquid in the ceramic tank also does not close the overfill protection according to the invention until the tank is full. Another advantage of the invention is that it can be made very cheap in terms of manufacturing costs, even disposable, so that the use of the invention becomes advantageous.

Keksintoa ryhdytaan selvittamaan seuraavassa ohei-sessa pilrustuksessa esitetyn edullisen sovellutusesimerkin avulla, jolloin kuvio 1 esittaa periaatteellisesti keksinnOn mukais-30 ta ylitayttOsuojaa kerdyssailiOn yhteydessa tilanteessa, jossa nestetta imetaan sailiOOn ja jossa sailiO ei ole taynna ja kuvio 2 esittaa periaatteellisesti kuvion 1 sovitel-maa tilanteessa, jossa sailiO on taynna.The invention will be explained by means of a preferred embodiment shown in the following accompanying drawing, in which Fig. 1 shows in principle the overfill protection according to the invention in connection with a winding tank in a situation where liquid is sucked into the tank and the tank is not where sailiO is full.

35 Kuvioissa 1 ja 2 on esitetty periaatteellisesti kek- 3 90227 sinnOn eras edullinen sovellutusmuoto kerayssailiOn yhtey-dessa. Viitenumeron 1 avulla on esitetty kerayssailiO ja viitenumeron 2 avulla kerayssailiOn 1 kansl. Viitenumeron 3 avulla kuvioihin on merkitty imulåhteen liitanta ja vii-5 tenumeron 4 avulla vastaavasti nesteen tuloliitanta. Imu-; lahdetta ja vaiineita, joilla neste imetaan, seka putkisto- ja ei ole esitetty kuvioissa. Ko. laitteet ovat alan aramat-timiehelle taysin tavanomaista tekniikkaa, joten ko. lait-teita ei selviteta tassa yhteydessa tarkemmin.Figures 1 and 2 show in principle a preferred embodiment of the invention in connection with a ceramic container. Reference numeral 1 denotes a ceramic container and reference numeral 2 denotes a ceramic container 1. Reference numeral 3 denotes in the figures the connection of the suction source and reference numeral 4 denotes the inlet connection of the liquid, respectively. Suction-; the bay and silos with which the liquid is sucked, as well as the piping and are not shown in the figures. Ko. the devices are a completely conventional technique for the aramat worker in the field, so the devices are not explained in more detail in this context.

10 Viitenumeron 5 avulla on esitetty ylitayttOsuojan tiivistyslevy ja viitenumeron 6 avulla ylitayttOsuojan koho. Viitenumeron 7 avulla kuvioihin on merkitty ylitayttOsuojan tiiviste, joka kuvioiden suoritusmuodossa on muo-dostettu kohon yhtenéiseksi osaksi. Viitenumeron 8 avulla 15 kuvioihin on merkitty ylitayttOsuojan kuori.Reference numeral 5 denotes an overfill sealing plate and reference numeral 6 denotes an overfill seal. Reference numeral 7 denotes an overfill seal in the figures, which in the embodiment of the figures is formed as an integral part of the embossment. Reference numeral 8 denotes in 15 figures the shell of the overfill protection.

YlitayttOsuoja, ts. tiivistelevyn 5, kohon 6, tii-visteen 7 ja kuoren 8 muodostama sovitelma voidaan liittaa kerayssailiOn 1 kanteen 2 esimerkiksi jollain sopivalla liittimelia tai upottamalla sovitelma sopivasti kanteen. 20 YlitayttOsuoja voidaan myOs hitsata kanteen tai muodostaa yhtenaiseksi osaksi kannen kanssa. Kansi 2 asetetaan ilma-tiiviisti kerayssailiOn 1 paaile. Imuiahteen liitanta 3 yh-distetaan imuiahteeseen ja nesteen tuloliitanta 4 vastaavasti vaiineisiin, joilla neste johdetaan kerayssailiOOn 1. 25 Nesteen virtaus sailiOOn 1 on merkitty kuvioon 1 nuolen VS avulla.The overfill protection, i.e. the arrangement formed by the sealing plate 5, the buoyancy 6, the seal 7 and the shell 8, can be connected to the cover 2 of the ceramic container 1, for example by some suitable connector or by embedding the arrangement in the cover. 20 The overflow protection can also be welded to the cover or formed an integral part with the cover. The lid 2 is placed in an airtight ceramic container. Imuiahteen connection 3 YH combined in imuiahteeseen and fluid ingress interface vaiineisiin 4, respectively, with the liquid supplied to the collecting tank 1. The liquid flow 25 of the container 1 is indicated in Figure 1 by means of arrow VS.

KeksinnOn mukaisesti koho 6 rajaa sisaansa osan kuoren 8 sisatilasta. Kuoren 8 alaosaan on sovitettu kahdenko-koisia aukkoja 9 ja 10, pienemmat 9 alaosan reunan låhei-30 syyteen kohon 6 rajaaman alueen ulkopuolelle ja isompi, ainakin yksi aukko 10 keskiosaan kohon rajaaman tilan koh-dalle. Pienemmat aukot 9 on muodostettu niin pieniksi, etta nestepinnan, joka on esitetty viitteelia P kuviossa 2, noustessa kuoren 8 alaosan tasolle neste virtaa kuoren si-35 saan olennaisesti ainoastaan kohon 6 kohdalla olevien auk- 4 90227 kojen tai aukon 10 kautta ja nostaa samalla kohon 6 yia-asentoonsa, jossa se sulkee ilman paasyn imuiahteen liitantaan 3. Nesteen virtaus aukon 10 lapi on merkitty nuolen V avulla kuvioon 2.According to the invention, the protrusion 6 delimits a part of the interior space of the shell 8. Arranged in the lower part of the shell 8 are two-dimensional openings 9 and 10, smaller 9 near the edge of the lower edge outside the area delimited by the embossment 6 and a larger, at least one opening 10 in the middle part for the space delimited by the embossment. The smaller openings 9 are formed so small that as the liquid surface shown by reference P in Fig. 2 rises to the level of the lower part of the shell 8, the liquid flows into the shell substantially only through the openings or opening 10 at the elevation 6 and at the same time raises the elevation. 6 Yia position in which it closes the access to the imuiahteen connections 3. the fluid flow through the aperture 10 is indicated by the arrow V by means of Figure 2.

5 lima paasee virtaamaan kerayssailiOstå imuiahteen liitantaan 3 kuoren pienempien aukkojen 9 ja tiivistelevys-sa 5 olevien aukkojen 11 kautta silloin, kun koho ei ole painautuneena tiivistelevya 5 vasten. Tailainen tilanne on esitetty kuviossa 1, jossa ilman virtaus on kuvattu nuolten 10 I ja IU avulla.The mucus 5 is allowed to flow from the ceramic tank to the suction charge connection 3 through the smaller openings 9 in the shell and the openings 11 in the sealing plate 5 when the protrusion is not pressed against the sealing plate 5. Such a situation is shown in Figure 1, where the air flow is illustrated by arrows 10 I and IU.

Koho 6 on sovitettu liikkumaan vapaasti pystysuun-nassa kuoren 8 sisallå. Kohon 6 liikkeita ohjataan sateit-taisten ripojen 12 avulla.The protrusion 6 is adapted to move freely vertically inside the shell 8. The movements of the float 6 are controlled by means of rain-like ribs 12.

KeksinnOn mukainen ylitayttOsuoja toimii periaat-15 teessa seuraavalla tavalla. Imettaessa nestetta kerayssai-liOOn 1 ilma kulkeutuu ylitayttOsuojan kuoren 8 alaosassa olevien pienempien aukkojen 9 kautta kuoren sisaan ja vir-taa edelleen kohon 6 ja kuoren 8 vaiissa olevaa rakoa pit-kin ylOspain kohon ja sen yhteydessa olevan tiivisteen 7 20 yiapuolelle seka edelleen tiivistelevyssa 5 olevien ilma-aukkojen 11 kautta imuiahteen liitantaan 3 ja siita edelleen imuiahteeseen. Neste virtaa tailOin tuloliitannan 4 kautta kerayssailiOOn 1 kuten kuviossa 1 on esitetty.The overfill protection according to the invention basically works in the following way. As the liquid is sucked into the ceramic container 1, air passes through the smaller openings 9 in the lower part of the overfill cover 8 inside the shell and continues to flow along the raised 6 and the gap in the shell 8 beyond the raised part and the associated seal 7 through the air openings 11 to the suction charge connection 3 and further to the suction charge. The liquid flows through the tail inlet 4 to the ceramic tank 1 as shown in Fig. 1.

Nestepinnan P noustessa ylitayttOsuojan polyolefii-25 neista valmistetun kuoren 8 alaosan tasolle peittyvat ilma-aukot 9, jolloin alipaine kuoren rajaamassa tilassa kasvaa. Kuoren 8 alaosassa ulkoreunalla olevat ilma-aukot 9 ovat niin pienia, etta aukkojen koon ja kuoren materiaalin yh-teisvaikutuksesta nesteen virtaaminen ko. aukoista vaatii 30 niin suuren voiman, etta koho nousee ylOspain ja neste virtaa kohon alla olevan suuremman aukon 10 tai suurempien aukkojen kautta kuoren sisaan, jolloin neste samalla nostaa kohoa ylOspain. Kohon 6 noustessa ylOspain se paatyy asen-toon, jossa kohon yhteydessa oleva tiiviste 7 painautuu 35 tiivistyslevya 5 vasten, jolloin ilman virtaustie aukkojen 5 90227 11 kautta sulkeutuu. Tama tilanne on esltetty kuviossa 2. Ilman virtaustien sulkeutuminen lopettaa my5s nesteen ime-mlsen kerayssailiOdn. Imulaltteen ollessa paallå alipaine pltaa kohon yiaasennossa, jolloin nestetta ei siis paase 5 virtaamaan kerayssailiiJOn 1.As the liquid surface P rises, the air vents 9 covered by the level of the lower part of the shell 8 made of polyolefins 25 of the overfill cover increase, whereby the vacuum in the space delimited by the shell increases. The air openings 9 at the outer edge of the lower part of the shell 8 are so small that due to the combined effect of the size of the openings and the shell material, the flow of liquid in question. the force 30 requires such a force that the bulge rises upwards and the liquid flows through the larger orifice 10 or larger under the bulge into the shell, whereby the liquid at the same time raises the bulge. As the float 6 rises, it reaches a position in which the seal 7 in connection with the float presses 35 against the sealing plate 5, whereby the air flow path through the openings 5 90227 11 closes. This situation is illustrated in Figure 2. The closure of the air flow paths also stops the absorption of liquid into the ceramic tank. When the suction bed is on, the vacuum flows in the elevated position, so that the liquid does not escape 5 to flow into the ceramic tank 1.

Nesteen roiskuessa kerayssailiOssa saattavat pisarat kulkeutua kuoren 8 alaosassa olevien ilma-aukkojen 9 eteen. KeksinnOssa neste ei kuitenkaan paase aukoista 9 sisaan ni-menomaan aukkojen 9 pienen koon ja kuoren materiaalin yh-10 teistoiminnan vuoksi. lima kulkeutuu tassa tilanteessa avoinna olevien aukkojen kautta. Vasta useamman ilma-aukon 9 tukkeutuminen nestepisaralla aiheuttaa alipaineen kohoa-misen kuoren 8 sisalla, jolloin helpoin tie ilman virtauk-selle on kohon 6 alla oleva aukko 10, josta ilma alkaa vir-15 rata nostaen samalla kohoa. Kohon noustessa ylOspain se painautuu tiivistelevya vasten ja ilman virtaus imuiahteel-le keskeytyy samoin kuin edelia on esitetty nestepinnan P nousun yhteydessa. Em. toiminnan seurauksena ilma-aukkoihin roiskuneet nestepisarat eivat kulkeudu imulaitteelle, vaan 20 ilman virtaus pysahtyy aina ennenkuin nestepisarat kulkeu-tuvat ilma-aukkojen 9 lapi.When liquid splashes in the ceramic container, droplets may pass in front of the air openings 9 in the lower part of the shell 8. In the invention, however, the liquid does not escape from the openings 9 precisely due to the small size of the openings 9 and the interaction of the shell material. in this situation, the mucus passes through the openings. Only the blockage of several air openings 9 with a drop of liquid causes a vacuum to rise inside the shell 8, whereby the easiest way for the air flow is the opening 10 below the lift 6, from which the air begins to flow while raising the lift. As the rise rises, it presses against the sealing plate and the flow of air to the suction jet is interrupted in the same way as described above in connection with the rise of the liquid surface P. Em. as a result of the operation, the liquid droplets splashing into the air openings do not pass to the suction device, but the flow of air 20 always stops before the liquid droplets pass through the air openings 9.

Tiivistelevyssa olevien ilma-aukkojen 11 koolia ja maaraiia voidaan rajoittaa ilmavirtausta niin, etta ilmais-kut eivat sulje ylitayttOsuojaa.The airflow of the vents 11 in the sealing plate can be limited so that the detectors do not close the overfill protection.

25 KeksinnOn mukainen ylitayttOsuoja toimii em. tavalla myOs silloin, kun neste vaahtoaa kerayssailiOn sisalla.The overfill protection according to the invention also works in the above-mentioned manner when the liquid foams inside the ceramic container.

Edelia esitettya keksinnOn sovellutusesimerkkia ei ole tarkoitettu mitenkaan rajoittamaan keksintoa, vaan kek-sintda voidaan muunnella patenttivaatimusten puitteissa 30 taysin vapaasti. N3in olien on selvaa, etta keksinndn mu-kaisen ylitayttOsuojan tai sen yksityiskohtien ei vaitta-matta tarvitse olla juuri sellaisia kuin kuvioissa on esitetty, vaan muunlaisetkin ratkaisut ovat mahdollisia.The above embodiment of the invention is not intended to limit the invention in any way, but the invention can be modified completely freely within the scope of the claims. It is clear from this that the overfill protection according to the invention or its details do not have to be exactly as shown in the figures, but other solutions are possible.

Claims

1. Overfill protection for one with a suction device or corresponding provided collection container, which

2. Overfill protection according to claim 1, characterized in that a seal (7) is provided on the upper edge of the float (6), which, when pressed against the sealing plate, encloses the flow wave from the smaller air openings (9) in the housing (8). ) to the air ports (11) of the sealing plate (5). 35 9 90227

3. Overfill protection according to claim 2, characterized in that the seal (7) is formed into a uniform part of the float (6).

Overfill protection according to any of the preceding claims, characterized in that the housing (8) is made of polyolefins.

5. Overfill protection according to one of the preceding claims 1-4, characterized in that the size and number of air openings (11) in the sealing plate 10 (5) have been arranged to delineate the air flow and prevent the air flow offs from overfill protection.

Overfill protection comprises a cover located in the cover of the collection container (1) or in connection with the cover (2), with at least one air opening (11) provided with a sealing plate (5) which covers a suction cooled connection (3), a housing (below the sealing plate). 8), which delimits a portion of the inner compartment of the collection container into its own substantially separate space, and in the lower part of the housing (8) there are openings for air flow and a housing, arranged freely within the housing, vertically movable, arranged in the housing (8). that in its upper position it is pressed against the sealing plate (5) and closes at least one air aperture (11), characterized in that the float (6) is arranged to delimit a part of the interior space of the housing (8) and to enclose in the housing (8). ) bottom members are provided with openings (9,10) of two sizes, the smaller ones (9) in the proximity of the edge outside the area bounded by the float (6) and a larger, at least one opening (10) in the middle part, in of the area bounded by the float (6), whereby the smaller openings (9) have been made so small that when the liquid surface (P) rises to the same level with the bottom of the housing (8), liquid flows into the housing. substantially only through the openings or the opening (10) at the float (6) and at the same time lift the float (6) to its upper position, whereby it shuts off the air supply to the suction source connection (3).

6. Overfill protection according to claim 5, characterized in that the air openings (1) of the sealing plate (5) are made so small that wet drops are not allowed to pass through.