DK152822B

DK152822B - DEVICE FOR REGULATING WATER INPUT SPEEDS TO A COLLECTION CONTAINER, PRIOR TO A WATER ATM

Info

Publication number: DK152822B
Application number: DK395480A
Authority: DK
Inventors: Eddie Lai Stenild
Original assignee: Eddie Lai Stenild
Priority date: 1980-09-18
Filing date: 1980-09-18
Publication date: 1988-05-24
Also published as: SE8105439L; NO813004L; DK395480A; GB2083993B; DK152822C; NO149907C; GB2083993A; NO149907B; SE448336B

Description

iin

DK 152822 BDK 152822 B

Opfindelsen angår en indretning til regulering af vandindløbshastigheder til en opsamlingsbeholder, fortrinsvis i en vandingsautomat, hvor indløbet til opsamlingsbeholderen er forbundet med en strømningsmåler, som er tilsluttet en vandforsy-5 ningsledning, hvori er anbragt en trykkompenserende strømreguleringsventil, som har en i et cylindrisk ventilhus anbragt og med en reguleringsspindel aks i alt sammentrykkel ig bøsn i ng, hvis indre står i forbindelse med vandforsyningsledningen.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a device for controlling water inlet rates of a collection vessel, preferably in an irrigation apparatus, wherein the inlet of the collecting vessel is connected to a flow meter connected to a water supply line, in which is a pressure compensating flow control valve having arranged and with a control spindle axis in all compression in bushings, the interior of which is connected to the water supply line.

jq Med en vandingsautomat kan man opnå en konstant og ensartet vanding og fortrinsvis også gødskning af planter i drivhuse, vinterhaver, på terrasser og lignende steder, hvor vandingen kan gennemføres med et simpelt system af rørslanger, der er forsynede med huller ud for planterne, der skal vandes. I et jg sådant vandingssystem er det vigtigt, at rørslangerne med regelmæssigt mellemrum hurtigt fyldes helt med vand, så systemet afgiver stort set lige store vandmængder gennem de først og sidst i strømningsretningen anbragte huller i slangerne. For at opnå en konstant og ensartet vanding med en sådan vandings-20 automat er det vigtigt, at vandingsautomaten også selv forsynes med konstante mængder af vand pr. tidsenhed, uafhængigt af eventuelle uregelmæssigheder i vandtilførslen på grund af tryk. Til dette formål er det nødvendigt med en passende trykkompenserende strømreguleringsventil i forbindelse med vand-__ forsyningsledningen.jq With an irrigation machine you can achieve a constant and uniform irrigation and preferably also fertilization of plants in greenhouses, conservatories, on terraces and similar places where irrigation can be carried out with a simple system of pipe hoses provided with holes next to the plants that must be watered. In such an irrigation system, it is important that the pipe hoses be filled completely with water at regular intervals, so that the system delivers roughly equal amounts of water through the holes initially located in the flow direction. In order to achieve a constant and uniform irrigation with such an irrigation machine, it is important that the irrigation dispenser itself is also supplied with constant amounts of water per day. unit of time, irrespective of any irregularities in the water supply due to pressure. For this purpose, an appropriate pressure compensating flow control valve is required in connection with the water supply line.

L OL O

Det er kendt at kompensere for trykket og regulere for vandmængdetilførslen ved at anvende en vandopsamlingsbeholder, hvis vandtilførsel styres ved hjælp af en flyder, således at vandniveauet holdes konstant. Fra beholderen doseres den øn-30 skede vandmængde pr. tidsenhed ved hjælp af en måleventil. Et sådant system er forholdsvis dyrt at fremstille samtidigt med, at det, når det drejer sig om forholdsvis små vandmængder, som det er tilfældet i en vandingsautomat, ikke kan fungere med tilfredsstillende nøjagtighed.It is known to compensate for the pressure and regulate the water supply by using a water collection vessel whose water supply is controlled by a float so that the water level is kept constant. From the container, the desired amount of water is dosed per day. time unit using a metering valve. Such a system is relatively expensive to manufacture at the same time that, in the case of relatively small quantities of water, as is the case in an irrigation machine, it cannot function with satisfactory accuracy.

3535

Tysk offentliggørelsesskrift nr. 2.241.592 angår en reguleringsventil bestående af to indbyrdes forskydelige dele omfattende et hus med en gennemgående boring, som står i forbindel·* \German Patent Publication No. 2,241,592 relates to a control valve consisting of two mutually displaceable parts comprising a housing with a through bore which is in communication · * \

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2 se med et cylindrisk kammer, hvori der er anbragt en sammen-trykkelig bøsning. Bøsningen danner sammen med boringen en gennemgående passage i huset. Ventilen omfatter endvidere et trykstempel med en central åbning, som, når trykstemplet er 5 skruet sammen med huset, strækker sig koaks i alt med passagen igennem huset. Alt efter, hvor langt trykstemplet er skruet ind i huset, presser det bøsningen mere eller mindre sammen, så at hullet og dermed gennemstrømningspassagen igennem bøsningen får en varierende diameter. Denne ventil åbner ikke mu-10 lighed for automatisk trykkompensering.2 with a cylindrical chamber in which a compressible sleeve is provided. The bushing together with the bore forms a continuous passage in the housing. The valve further comprises a pressure piston with a central opening, which, when the pressure piston is screwed together with the housing, extends coax in total with the passage through the housing. Depending on how far the pressure piston is screwed into the housing, it compresses the bushing more or less, so that the hole and thus the flow passage through the bushing have a varying diameter. This valve does not open the possibility of automatic pressure compensation.

Fra britisk patentskrift nr. 1.304.311 kendes en trykkompenserende reguleringsventil, som omfatter et bægerformet gummilegeme med en konisk udvendig overflade. Dette gummilegeme ud-15 fylder fuldstændigt en gennemstrømningspassage, og den udvendige væg ligger an imod en rundtgående konisk indvendig overflade i passagen. Den indvendige overflade i passagen er forsynet med en spiralformet rille, hvorigennem væsken kan strømme. Trykvar i at i oner indebærer, at gummilegemet indvendigt fra 2Q trykkes mere eller mindre ind i de spiralformede riller og herved regulerer gennemstrømningsmængden. Denne ventil er ikke særlig velegnet til brug ved små vandmængder og kan heller ikke sikre en fuldstændig afspærring af vandstrømmen.British Patent Specification No. 1,304,311 discloses a pressure compensating control valve which comprises a cup-shaped rubber body with a conical exterior surface. This rubber body completely fills a flow passage and the outer wall abuts a circumferential conical inner surface of the passage. The inner surface of the passage is provided with a helical groove through which the liquid can flow. Pressure in that oner implies that the rubber body inside from 2Q is pressed more or less into the helical grooves and thereby regulates the flow rate. This valve is not very suitable for use in small quantities of water and cannot ensure a complete shutdown of the water flow.

Indretningen ifølge opfindelsen er ejendommelig ved, at bøs-25 ningens udvendige væg sammen med det omgivende ventilhus danner en udstrømningspassage, som står i forbindelse med strømningsmåleren, og som med radiale udboringer i væggen ved midten af bøsningen står i forbindelse med det indre af denne.The device according to the invention is characterized in that the outer wall of the sleeve together with the surrounding valve housing forms an outflow passage which communicates with the flow meter and which with radial bores in the wall at the middle of the sleeve communicates with the interior thereof.

30 Herved opnås, at der tilvejebringes en let indstillelig indretning, som i sig selv er yderst enkel og billig at fremstille, og som samtidigt også sikrer en pålidelig og forholdsvis nøjagtig modvirken af uregelmæss i gheder i vandtilførslen. Dette skyldes især, at de radiale udboringer i den sammentryk-35 kelige bøsning udgør den eneste forbindelse imellem vandforsyningsledningen og ventilens udstrømningspassage og samtidigt netop befinder sig på det sted, hvor den sammentrykkelige bøsning udvider sig mest på tøndeformet måde i overensstemmelseHereby it is obtained that an easily adjustable device is provided which is in itself extremely simple and inexpensive to manufacture, and which at the same time also ensures a reliable and relatively accurate counteracting of irregularities in the water supply. This is mainly because the radial bores in the compressible sleeve constitute the only connection between the water supply line and the valve outlet passage and at the same time are precisely at the point where the compressible sleeve expands most in the barrel-shaped manner.

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3 med trykket i vandforsyningsledningen og dermed i større eller mindre grad kan aflukkes af den cylindriske væg i ventilhuset.3 with the pressure in the water supply line and thus can be closed to a greater or lesser extent by the cylindrical wall in the valve housing.

På grund af udboringernes placering vil de kunne aflukkes helt ved maksimal trykpåvirkning enten af spindelen eller af tryk-5 ket i vandforsyningsledningen eller kombinationer heraf. Der vil herved kunne opnås en trinløs regulering af vandtilførslen, og trykkompenseringen kan foregå inden for meget små vandmængder. Om nødvendigt kan indretningen indstilles til at * lade vand passere nærmest i form af dråber.Due to the location of the boreholes, they will be able to be completely closed by maximum pressure exertion either by the spindle or by the pressure in the water supply line or combinations thereof. Hereby a stepless control of the water supply can be achieved and the pressure compensation can take place within very small quantities of water. If necessary, the device can be set to * allow water to pass closest in the form of drops.

1010

Opfindelsen forklares nærmere i det følgende i forbindelse med tegningen, hvor fig. 1 viser skematisk et tværsnit gennem en udførelsesform for en vandingsautomat med en indretning ifølge opfindelsen, fig. 2 og 3 en udførelsesform for en trykkompenseret strømreguleringsventil, vist henholdsvis i lukket og åben stilling.The invention will be further explained in the following with reference to the drawing, in which fig. 1 schematically shows a cross-section through an embodiment of an irrigation machine with a device according to the invention; FIG. 2 and 3 are embodiments of a pressure-compensated flow control valve, shown in closed and open positions respectively.

2020

Den viste vandingsautomat har en opsamlingsbeholder 5, der f.eks. kan være fremstillet af plast. Foroven på beholderen er udvendigt udformet et reguleringsreservoir 2, hvis gennemsigtige væg er forsynet med en skala 3, der indikerer over-25 fladeniveauet af vand, som strømmer ind gennem en justeringsventil 1, og som fra reservoiret 2 strømmer ind i opsamlingsbeholderen 5 gennem en gennemstrømningskanal 4. Reservoiret 2 virker således som en strømningsmåler, der viser mængden af tilstrømmende vand. Til kompensation for trykændringer 3Q i vandforsyningsledningen er justeringsventilen 1 på simpel måde indrettet som en trykkompenserende strømreguleringsventil som nedenfor nærmere forklaret.The irrigation dispenser shown has a collection container 5 which e.g. can be made of plastic. Externally, a regulating reservoir 2 is provided externally, the transparent wall of which is provided with a scale 3 indicating the surface level of water flowing through an adjustment valve 1 and flowing from the reservoir 2 into the collecting vessel 5 through a flow channel. 4. The reservoir 2 thus acts as a flow meter showing the amount of flowing water. To compensate for pressure changes 3Q in the water supply line, the adjusting valve 1 is simply arranged as a pressure compensating current control valve as explained below.

Opsamlingsbeholderen 5 har et tragtformet bundudløb 13. Over 35The collection container 5 has a funnel-shaped bottom outlet 13. Over 35

OISLAND

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4 udløbet 13 er anbragt en bægerformet flyder 6, der i sin ned-erste stilling hviler på afstandsknaster 14,· således at vand i beholderen 5 har £ri adgang til undersiden af flydsren.4, the outlet 13 is provided with a cup-shaped float 6 which, in its lower position, rests on spacers 14, so that water in the container 5 has access to the bottom of the float.

Dennes bund er udformet med et centralt opadrettet rørformet 5 parti 10, gennem hvis lukkede endeflade der er ført et forbindelsesrør 11, som danner den nederste del af det ene grenrør af en hævert 12, hvis modsatte ende udmunder i bunden af flyderen. Forbindelsesrøret 11 bærer ved sin nederste ende et kegleformet ventillegeme 7, hvis øverste cirkulære kant 10 danner et stop, der begrænser flyderens opadgående bevægelse, idet den ligger tætnende an mod en konisk lukkeflade 8 i bunden af opsamlingsbeholderen 5. I den viste mellemstilling og i sin nederste stilling er der fri forbindelse mellem et fra beholderen opstående spærrerør 9 og udløbet 13. Hævertens 15 forbindelsesrør 11 udmunder som vist i spidsen af ventillegemet 7. "Its bottom is formed with a centrally upwardly tubular portion 10, through whose closed end surface is passed a connecting tube 11, which forms the lower part of one branch tube of a raised 12, the opposite end of which opens into the bottom of the float. The connecting tube 11 carries at its lower end a cone-shaped valve body 7, the upper circular edge 10 of which forms a stop limiting the upward movement of the float, sealingly against a tapered closure surface 8 at the bottom of the collecting container 5. In the intermediate position and in its position. in the lower position there is free connection between a locking tube 9 which arises from the container and the outlet 13. The connecting pipe 11 of the lever 15 opens as shown in the tip of the valve body 7. "

Spærrerøret 9 og det rørformede parti 10 danner en hævertforbindelse mellem opsamlingsbeholderen 5 og udløbet 13. Der 20 indtræder derfor en hævertvirkning, når vandoverfladen i opsamlingsbeholderen 5 ligger i et højere niveau end mundingen af spærrerøret 9, og ventilen 7 åbnes.The locking tube 9 and the tubular portion 10 form a siphon connection between the collecting vessel 5 and the outlet 13. Therefore, a siphoning effect occurs when the water surface of the collecting vessel 5 is at a higher level than the mouth of the locking tube 9 and the valve 7 is opened.

Når vand fra gennemstrømningskanalen 4 strømmer ind i den 25 tomme opsamlingsbeholder 5, hviler flyderen 6 på afstandsknasterne 14, indtil vandoverfladen er nået op i et vist niveau A-A, som ligger under mundingen af spærrerrøret 9, hvorefter opdriften bliver tilstrækkelig stor til at løfte flyderen 6, indtil ventillegemet 7 lukker mod lukkefladen 8.As water from the flow passage 4 flows into the 25 empty collection vessel 5, the float 6 rests on the spacers 14 until the water surface has reached a certain level AA, which lies below the mouth of the barrier tube 9, after which the buoyancy becomes sufficiently large to lift the float 6 until the valve body 7 closes against the closing surface 8.

30 Flyderen står nu i den med punkterede linier antydede stilling, og vandet fortsætter med at stige op til det viste niveau B-B, hvorefter det begynder at løbe ind i flyderen 6.30 The float is now in the dotted line position and the water continues to rise to the level B-B shown, after which it starts to flow into the float 6.

Når vandet i flyderen er nået op til et niveau C-C i afstand under bøjningen i hæverten 12, vil vægten af flyder med vand 35 overvinde opdriften i opsamlingsbeholderen 5, og flyderen 6 bevæger sig nedad. Herved åbnes passagen mellem ventillegemet 7 og lukkefladen 8, hvorpå vandet fra opsamlingsbeholderen 5 under hævertvirkning og med en hastighed, som er langt stør-When the water in the float has reached a level C-C at a distance below the bend in the heater 12, the weight of the float with water 35 will overcome the buoyancy in the collection vessel 5 and the float 6 will move downwards. Hereby, the passage between the valve body 7 and the closing surface 8 is opened, whereupon the water from the collecting vessel 5 under siphon action and at a velocity which is far greater

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re end den, hvormed vandet løber ind foroven i flyderen 6, strømmer ud gennem udløbet 13. Væskeoverfladen i opsamlingsbeholderen 5 synker straks ned under overkanten af flyderen 6, så vandtilførslen til denne ophører, og ved den kraftige udstrømning af vand rundt om ventillegemet 7 opstår 5 der i forbindelsesrøret 11 en sugning, scrn bevirker, at hæverten 12 træder i funktion og hurtigt tømmer flyderen 6.more than that by which the water enters the top of the float 6, flows out through the outlet 13. The liquid surface of the collection vessel 5 immediately drops below the upper edge of the float 6, so that the water supply to it stops, and the strong outflow of water around the valve body 7 occurs. 5, a suction in the connecting pipe 11 causes the heater 12 to act and quickly drain the liquid 6.

Opsamlingsbeholderen 5 er forsynet med et låg 20, i hvilket der er udformet et reservoir 17 for flydende gødning. En lukket gødningsbeholder 15 er anbragt oven over reservoiret 17 10 og har en udløbsstuds 16, som er neddykket i reservoiret og derved er bestemmende for overfladeniveauet i dette. I bunden af reservoiret er anbragt et modstandsfilter 18, gennem hvilket gødning i dråbeform kan passere i en af trykket over filteret bestemt mængde. Væsketrykket ved bunden af reservoiret 15 17 og dermed den gennem filteret 18 afgivne gødningsmængde kan reguleres ved at ændre højden af beholderen 15 og følgelig neddypningslængden af rørstudsen i reservoiret. Til dette formål er beholderen 15 understøttet på låget ved hjælp af en niveauring 19, der kan udskiftes med ringe af andre 20 højder.The collecting container 5 is provided with a lid 20 in which a liquid fertilizer reservoir 17 is formed. A closed fertilizer container 15 is placed above the reservoir 17 10 and has an outlet nozzle 16 which is submerged in the reservoir and thereby determines the surface level therein. A resistance filter 18 is provided at the bottom of the reservoir through which droplet fertilizers can pass in any amount determined by the pressure above the filter. The liquid pressure at the bottom of the reservoir 15 17 and thus the amount of fertilizer delivered through the filter 18 can be adjusted by changing the height of the container 15 and consequently the length of immersion of the pipe nozzle in the reservoir. For this purpose, the container 15 is supported on the lid by a level ring 19 which can be replaced with rings of other 20 heights.

Som nævnt er justeringsventilen 1 indrettet til at kompensere for svingninger i trykket i vandforsyningsledningen, således at tidsintervallet mellem tømningerne af opsamlings- ΛΓ beholderen 5 forbliver konstant trods sådanne svingninger.As mentioned, the adjustment valve 1 is arranged to compensate for fluctuations in the pressure in the water supply line, so that the time interval between the emptying of the collection ΛΓ container 5 remains constant despite such fluctuations.

En simpel udførelsesform for en sådan trykkompenseret strømreguleringsventil er vist i fig. 2 og 3, hvor ventilen ses i henholdsvis lukket og åben stilling.A simple embodiment of such a pressure compensated flow control valve is shown in FIG. 2 and 3, where the valve is seen in the closed and open positions respectively.

30 , · *30, · *

Den viste justeringsventil 1 har et cylindrisk ventilhus 21, hvori er anbragt en bøsning 22 af et elastisk materiale. Bøsningens ene ende ligger tæt an mod en reguleringsspindel 23 og ved dens anden ende står den i åben forbindelse med et vandforsyningsrør 24. Ved midten af bøsningen har dens væg 35 et antal radiale boringer 25, gennem hvilke vandforsyningsrøret 24 kan sættes i forbindelse med ventilens afgangsstuds 26. Når bøsningen 22 udsættes for et aksialt tryk fra regu-' leringsspindelen 23, vil dens væg bue udad mod huset 21 ogThe adjusting valve 1 shown has a cylindrical valve housing 21 in which is arranged a sleeve 22 of an elastic material. One end of the sleeve abuts a regulating spindle 23 and at its other end it is openly connected to a water supply pipe 24. At the center of the sleeve, its wall 35 has a plurality of radial bores 25 through which the water supply pipe 24 can be connected to the outlet outlet of the valve. 26. When the bush 22 is subjected to an axial pressure from the control spindle 23, its wall will curve outwardly against the housing 21 and

Claims

DK 152822 B O 26 and optionally completely close it as shown in FIG.

2. When the valve is fully or partially open (see fig.

3), and the wall of the sleeve 22 is rather cylindrical or only slightly arched, an increasing pressure in the water supply line 24, and thus in the inner 5 of the sleeve, will cause an increased bulging of the wall and a corresponding restriction of the water flow, thereby increasing water supply due to it. increasing pressure is counteracted. Conversely, a decrease in the pressure in the water supply line 24 will cause the wall of the sleeve to arc less, so that the flow area increases, thereby counteracting a diminished water supply due to the decreasing pressure. Claims. Device for controlling water inlet velocities for a collection vessel (5), preferably in an irrigation machine, wherein the inlet (4) of the collecting vessel (5) is connected to a flow meter (2, 3) connected to a water supply line, wherein: arranged a pressure compensating flow control valve (1) having one in a cylindrical valve housing (21) and with a regulating spindle (23) in all compressible sleeve (22), the interior of which communicates with the water supply line, characterized in that the sleeve (22) 25 exterior wall together with the surrounding valve housing forms an outflow passage which communicates with the flow meter (2, 3) and which communicates with the interior of the bush with radial bores (25) in the wall at the center of the sleeve. 30 35