SE500731C2

SE500731C2 - Valve for connection of suction nozzle to a vacuum source and filter housing containing the valve

Info

Publication number: SE500731C2
Application number: SE9302704A
Authority: SE
Inventors: Jan-Aake Hallen
Original assignee: Cacan Products Ab
Priority date: 1993-08-23
Filing date: 1993-08-23
Publication date: 1994-08-15
Also published as: WO1995005787A1; SE9302704L; SE9302704D0; AU7511294A

Abstract

A valve for remote-controlled connection of suction nozzle to a source of vacuum. The valve includes a valve house (10) with an inlet (11) and an outlet (12), which is arranged perpendicular to the inlet (11). It includes an oblong tube socket displaceably disposed in the valve house (10) which is equipped with a collar (13). The tube socket is connected at its one end to a suction hose, and is pressed in its closing position to bear on a resilient membrane (19) with its other end by the action of a spring member (18). The valve house (10) is provided with connection means (21) to a source of compressed air, which is provided to act on one side of the collar (13) to overcome the effect of the spring member (18) and remove said other socket end from the resilient membrane (19) at operation of the valve to an open position.

Description

30 35 LH CD CD \J ( N -_.\ BESKRIVNING AV RITNINGARNA Uppfinningen kommer nedan att beskrivas med hänvisning till utföringsexempel som visas pà de bifogade ritningarna, pà vilka Fig. 1 visar en enligt uppfinningen utformad ventil, och Fig. 2 visar ventilen i Fig. 1 monterad i en suganläggning. LES CD DESCRIPTION OF THE DRAWINGS The invention will be described below with reference to exemplary embodiments shown in the accompanying drawings, in which Fig. 1 shows a valve designed according to the invention, and Fig. 2 shows the valve in Fig. 1 mounted in a suction system.

BESKRIVNING AV UTFÖRINGSEXEMPEL Ett ventilhus har i Fig. 1 betecknats med 10 och omfattar ett inlopp 11 samt ett utlopp 12, vilket utlopp är riktat i rät vinkel mot inloppet.DESCRIPTION OF EMBODIMENTS In Fig. 1, a valve housing is denoted by 10 and comprises an inlet 11 and an outlet 12, which outlet is directed at a right angle to the inlet.

Inloppet 11 utgörs av en avlång rörhylsa som är försedd med en krage 13 ungefär mitt på dess längd. Kragen 13 är försedd med ett radiellt utåtriktad spår som bildar lagring för en O-ringstätning 14. Inloppshylsan 11 är förskjutbart lagrad inuti ventilhuset 10, som vid sin nedre ände är försedd med ett löstagbart skruvlock 15, genom vilket inloppshylsan sträcker sig. Skruvlockets 15 övre kant 16 och en inre kant 17 i ventilhuset 10 definierar i samverkan med kragen 13, ändlägena för inloppshylsans förskjutbarhet i ventilhuset.The inlet 11 consists of an elongate pipe sleeve which is provided with a collar 13 approximately in the middle of its length. The collar 13 is provided with a radially outwardly directed groove which forms storage for an O-ring seal 14. The inlet sleeve 11 is slidably mounted inside the valve housing 10, which at its lower end is provided with a detachable screw cap 15, through which the inlet sleeve extends. The upper edge 16 of the screw cap 15 and an inner edge 17 of the valve housing 10, in cooperation with the collar 13, define the end positions for the displaceability of the inlet sleeve in the valve housing.

En skruvlindad tryckfjäder 18 är lagrad inuti ventilhuset, så att dess ena ände anligger mot skruvhylsan 15, och dess andra ände stöder mot kragen 13. Tryckfjädern 18 pressar inloppshylsan uppåt i figurerna, så att hylsans övre ände vilket innebär att och täthet erhålles genom hylsändens anliggning mot membranet 19. anligger mot ett elastiskt membran 19, utloppet 12 är stängt av hylsans 11 vägg, Ytterligare täthet åstadkommas genom en i ventilhuset nära utloppet 12 lagrad O-ringstätning 20 .A helically wound compression spring 18 is mounted inside the valve housing so that one end abuts the screw sleeve 15, and its other end abuts the collar 13. The compression spring 18 presses the inlet sleeve upwardly in the figures so that the upper end of the sleeve is obtained by tightness of the sleeve end. against the diaphragm 19. abuts against an elastic diaphragm 19, the outlet 12 is closed by the wall of the sleeve 11. Additional tightness is provided by an O-ring seal 20 stored in the valve housing near the outlet 12.

Ventilhuset 10 är försett med en fastskruvad nippel 21 för anslutning via en icke visad slang till en tryckluftkälla. 10 15 20 25 30 35 500 731 3 Tillförseln av tryckluft till medelst en elektriskt eller pneumatiskt styrd ventil, så att nippeln styrs lämpligen tryckluftflödet till nippeln aktiveras när ett till inloppet 11 anslutet sugverktyg lyfts ur sin hållare. Tryckluften kommer då att verka på översidan av kragen 13, mellan O- ringstätningarna 14 och 20, vilket innebär att inloppshylsan ll kommer att pressas nedåt och frilägga utloppet 12, så att inloppet 11 ansluts till en med utloppet 12 förbunden sugmotor. Ett litet flöde av tryckluft kan tillåtas från nippeln 21 förbi O-ringen 20 till undertrycket vid utloppet 12, vilket flöde förhindrar att förorenad fluid sipprar in i ventilen.The valve housing 10 is provided with a screwed-on nipple 21 for connection via a hose (not shown) to a source of compressed air. 10 15 20 25 30 35 500 731 3 The supply of compressed air to by means of an electrically or pneumatically controlled valve, so that the nipple is suitably controlled, the flow of compressed air to the nipple is activated when a suction tool connected to the inlet 11 is lifted out of its holder. The compressed air will then act on the upper side of the collar 13, between the O-ring seals 14 and 20, which means that the inlet sleeve 11 will be pressed downwards and expose the outlet 12, so that the inlet 11 is connected to a suction motor connected to the outlet 12. A small flow of compressed air can be allowed from the nipple 21 past the O-ring 20 to the negative pressure at the outlet 12, which flow prevents contaminated fluid from seeping into the valve.

När trycklufttillflödet till nippeln 21 avbryts kommer tryckfjädern 18 att pressa inloppshylsan uppåt till tätning mot det elastiska membranet 19 (se Fig. 2).When the supply of compressed air to the nipple 21 is interrupted, the compression spring 18 will press the inlet sleeve upwards to seal against the elastic membrane 19 (see Fig. 2).

Av Fig. 2 framgår att ventilen normalt är monterad inuti ett filterhus 22, vilket inrymmer en filterhållare 23 med ett nätfilter 24. Filterhållaren 23 är försedd med en urtagning 25, i vilken ventilhuset 10 är inskjutbart. En i spår på utsidan av ventilhuset placerad 0-ringstätning 26 tätar mellan ventilhuset 10 och urtagningens 25 vägg. Skruvar 27 används för att hålla fast ventilhuset i filterhàllaren.Fig. 2 shows that the valve is normally mounted inside a filter housing 22, which houses a filter holder 23 with a mesh filter 24. The filter holder 23 is provided with a recess 25, in which the valve housing 10 is slidable. A 0-ring seal 26 placed in grooves on the outside of the valve housing seals between the valve housing 10 and the wall of the recess 25. Screws 27 are used to hold the valve body in the filter holder.

Membranet 19 är klämt mellan ventilhuset och bottnen på urtagningen i filterhàllaren.The diaphragm 19 is clamped between the valve housing and the bottom of the recess in the filter holder.

Ventilutloppet 12 är förbundet via en kanal 28 med filtrets 24 inre. Filtrets nedströmssida är förbunden via en anslut- ning 29 med en icke visad undertryckskälla.The valve outlet 12 is connected via a channel 28 to the interior of the filter 24. The downstream side of the filter is connected via a connection 29 to a source of negative pressure (not shown).

Filterhuset 22 kan vara anslutet till flera ventilhus, så att filtret betjänar flera sugverktyg.The filter housing 22 can be connected to several valve housings, so that the filter serves several suction tools.

Uppfinningen är ej begränsad till det ovan beskrivna utföringsexemplet, utan flera varianter är tänkbara inom ramen för efterföljande krav.The invention is not limited to the embodiment described above, but several variants are conceivable within the scope of the following claims.

Claims

10 15 20 25 30 35 560 7231 PATENT REQUIREMENTS

Valve for remote connection of suction nozzle to a source of negative pressure, comprising a valve housing (10) with an inlet (11) and an outlet (12), which is directed at an angle to the inlet, characterized in that the inlet (11) comprises an elongate tubular sleeve slidably mounted in the valve housing (10) which is provided with a collar (13), which tubular sleeve is connected at one end to a suction hose, and is pressed in its closed position into abutment with its other end against an elastic membrane (19 ), by the action of a spring means (18), and that the valve housing (10) is provided with a connection (21) for a source of compressed air, which is arranged to act on one side of the collar (13) in order to overcome the action of the spring means (18) and remove said second sleeve end from the elastic diaphragm (19), when operating the valve to the open position.

Valve according to Claim 1, characterized in that the collar (13) is displaceable between an abutment surface (17) in the valve housing (10) and a screw cap (15) with bearing surfaces for the pipe sleeve.

3. A valve according to claim 2, characterized in that the outlet (12) of the valve housing is connected to a filter housing (22) by means of the suction nozzle and the air pressure source transported for separating contaminants from a medium.

Valve according to Claim 3, characterized in that the downstream side of the filter housing (22) is connected via a connection (29) to a source of negative pressure.

Valve according to claim 4, characterized in that the lower edge of a filter (24) located in the filter housing (22) is located above the lower edge of the connection (29), so that there is a direction towards the filter housing connection (29). slope i

Filter housing with valve for remotely connecting suction nozzle to a source of negative pressure, which valve comprises a valve housing (10) with an inlet (11) and an outlet (12), which is directed at right angles to the inlet, characterized in that the filter housing (22) is common to two or more valve housings (10)