DK156806B - Field sprayer - Google Patents
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- DK156806B DK156806B DK240684A DK240684A DK156806B DK 156806 B DK156806 B DK 156806B DK 240684 A DK240684 A DK 240684A DK 240684 A DK240684 A DK 240684A DK 156806 B DK156806 B DK 156806B
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Opfindelsen angàr en markspr0jte opbygget pâ basis af en konventionel hydraulisk sprojte med en sprojtebom og et antal sprojtedyser, især til ophængning pà eller bugsering efter en 5 traktor med hydraulikanlæg, og som omfatter en sproj tebom med en række væskedyser og en pumpe til under drift med hojt sprojtetryk at drive væsken ud af væskedyserne i en fin, nærmest tâgeagtig fordrâbning, samt en række ligeledes pâ bommen anbragte luftdyser og en central blæser eller 10 kompressor, som drives af én med hydraulikanlæggets udtag forbundet hydraul ikmot or og tjener til via et System af fleksible ror eller slanger at sende en nedadrettet luftstrom ud af luftdyserne mod afgroden samtidig med, at udledningen af sproj tevæske gennem sproj tedyserne finder sted, hvorved 15 luftdyserækken er anbragt ved siden af væskedyserækken, og hver luftdyse udmunder i en spalte, der strækker sig pâ langs af luftdyserækken.The invention relates to a field sprayer built on the basis of a conventional hydraulic sprayer with a spray boom and a number of spray nozzles, in particular for hanging on or towing after a tractor with a hydraulic system, and which comprises a spray boom with a series of liquid nozzles and a pump for operation with high spray pressure to drive the liquid out of the liquid nozzles in a fine, almost foggy discharge, as well as a series of air nozzles also mounted on the boom and a central fan or compressor, which is driven by a hydraulic motor connected to the outlet of the hydraulic system and serves via a system of flexible rudders or hoses to send a downward air flow out of the air nozzles towards the crop at the same time as the discharge of spray liquid through the spray nozzles takes place, whereby the air nozzle row is placed next to the liquid nozzle row and each air nozzle opens into a gap extending on along the air nozzle row.
Ved sprojtning i tætte eller ho je afgroder, f.eks. i korn 20 eller raps pà et sent stadie af- væksten, er det vanskeligt at opnâ en tilstrækkelig effektiv dækning af planterne med sprojtevæske. Især ved sprojtning med svampemidler, insekt-midler og lignende plantebeskyttelsesmidler er virkningen betinget af, at planterne dækkes jævnt og fuldstændigt bâde pà 25 stængler og blade med sprojtevæske. Ved anvendelse af sædvanlige marksproj ter med' hydrauliske dyser opnâs den · tilstræbte dækning og fordeling ved at benytte relativt store væskemængder og samtidigt et hojt sprojtetryk. Det ho je sprojtetryk bevirker en fin fordrâbning af sprojtevæsken, 30 sâledes at væsken nærmest afleveres i en tâge' med rimelig god indtrængnings- og fordelingsevne. I blæsende vejr vil denne sprojtetâge imidlertid være udsat for en betydelig afdrift. Afdriften forer til uensartet væskefordeling og risiko for skader pâ tilgrænsende arealer. De store væskemængder, som 35 sprojtemetoden indebærer, betyder en oget arbejdsindsats, mereWhen spraying in dense or high vegetation, e.g. in cereals 20 or rapeseed at a late stage of growth, it is difficult to obtain a sufficiently effective coverage of the plants with spray liquid. Especially when spraying with fungicides, insecticides and similar plant protection products, the effect is conditional on the plants being evenly and completely covered on both stems and leaves with spray liquid. By using usual field sprayers with hydraulic nozzles, the desired coverage and distribution is achieved by using relatively large amounts of liquid and at the same time a high spray pressure. The high spray pressure causes a fine dripping of the spray liquid, so that the liquid is almost delivered in a mist with reasonably good penetration and distribution ability. In windy weather, however, this spray mist will be subject to significant drift. The drift leads to a non-uniform liquid distribution and a risk of damage to adjacent areas. The large amounts of liquid that the spray method entails mean an increased work effort, more
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korsel i marken med forogede markskader til folge, og ogede udgifter til kemikalier.crossing in the field with increased field damage as a result, and increased costs for chemicals.
Man har forsagt at klare problemet ved at udfore 5 sprojtearbejdet fra en helikopter. Helikopteren giver an- ledning til en kraftig nedadrettet luftstrom mod afgroden, og j denne luftstrom bevirker, at afgroden "âbnes", og dermed ogsâ at sprajtevæsken fordeles effektivt over planterne. Erfar-ingerne med helikoptersprojtning har vist, at bâde væskemæng-10 de og kemikaliemængde kan reduceres betydeligt, uden at det gàr ud over sprojteeffekten.Attempts have been made to deal with the problem by carrying out the spraying work from a helicopter. The helicopter gives rise to a strong downward air flow towards the crop, and this air flow causes the crop to "open", and thus also the spray liquid to be distributed efficiently over the plants. Experience with helicopter spraying has shown that both the amount of liquid and the amount of chemical can be significantly reduced without compromising the spray effect.
En noget lignende virkning har man tilstræbt ved at kombinere de hydrauliske sprojtedyser pâ en sædvanlig marksprojte med 15 luftdyser, hvis formâl det er dels at "âbne" afgroden, dels at "bære" væskedrâberne nedad mod afgroden i en kontrolleret bevægelse, sàledes at vindafdrift modvirkes. Eksempelvis kendes fra tysk offentliggorelsesskrift nr. 2.833.604 en mark-sprojte, hvor fordràbningen af sprojtevæsken foregâr i et 20 antal hydrauliske dyser monteret pà en spræjtebom. Denne er omsluttet af et skort, indenfor hvilket der findes et System af luftdyser. Disse er forbundet til en blæser og frembringer sammen med denne en kontrolleret luftstrom ned mod afgroden. Luftstrommen frembringes altsâ i den zone, hvori sprojtevæsken 25 udledes. Skortet tjener primært til at hindre vindafdrift.A somewhat similar effect has been sought by combining the hydraulic spray nozzles on a conventional field sprayer with 15 air nozzles, the purpose of which is partly to "open" the abdomen and partly to "carry" the liquid droplets downwards towards the abdomen in a controlled movement, so that wind drift is counteracted. . For example, German Offenlegungsschrift No. 2,833,604 discloses a field sprayer in which the spraying of the spray liquid takes place in a number of hydraulic nozzles mounted on a spray boom. This is enclosed by a skirt, within which there is a System of air nozzles. These are connected to a blower and together with it produce a controlled air flow down towards the crop. The air flow is thus generated in the zone in which the spray liquid 25 is discharged. The shortage serves primarily to prevent wind drift.
Sprojten er omfangsrig og kompliceret i sin konstruktive opbygning, og forekommer nærmest uhàndterlig i ujævnt terræn. Fremstillingsprisen er hoj og vedligeholdelsesomkostningerne 30 tilsvarende store. Den praktiske udbredelse af sprojten er da ogsâ meget begrænset.The sprayer is bulky and complicated in its constructive construction, and appears almost unmanageable in uneven terrain. The manufacturing cost is high and the maintenance costs 30 correspondingly large. The practical distribution of the spray is also very limited.
Et kombineret hydraulisk/pneumatisk sprojtesystem af lignende art kendes fra tysk offentliggorelsesskrift nr. 2.535.084. Her 35 er der taie om en marksprojte, hvor sprojtevæsken fordrâbes i * et antal roterende væskefordelere, der udleder væsken iA combined hydraulic / pneumatic spray system of a similar type is known from German Offenlegungsschrift No. 2,535,084. Here 35 there is a field projector in which the spray liquid is drip-fed into * a number of rotating liquid distributors which discharge the liquid into
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vandrette, cirkulære stràlevifter. Til afgrænsning af strâle-udbredelsen fremad og bagud i karselsretningen er sprajten forsynet med et antal nedadrettede luftdyser. Disse frem-bringer et forreste og bagerste lufttæppe, der virker som 5 barrierer for strâlevifterne.horizontal, circular beam fans. To delimit the beam propagation forwards and backwards in the direction of the carousel, the sprayer is provided with a number of downwardly directed air nozzles. These produce a front and rear air curtain that acts as 5 barriers for the jet fans.
Drâberne presses af luftstrâlerne ned mod afgraden, sâledes at vindafdrift hindres, samtidig med at den kontrollerede luft-bevægelse sikrer en effektiv fordeling af sprajtevæsken over 10 plantedelene. Sprajten tillader en meget fin fordràbning af sprajtevæsken og dermed mulighed for sprajtning med minimal væskemængde. Ulempen ved sprajten er, at denne er meget kompliceret med mange mekanisk bevægede dele. Sprajten er kostbar bàde i anskaffelse og vedligeholdelse.The droplets are pressed by the air jets down towards the degree, so that wind drift is prevented, at the same time as the controlled air movement ensures an efficient distribution of the spray liquid over the plant parts. The spray allows a very fine dripping of the spray liquid and thus the possibility of spraying with a minimal amount of liquid. The disadvantage of the sprayer is that it is very complicated with many mechanically moving parts. The spray is expensive both in procurement and maintenance.
15 . Fra US patent nr. 2,976,647 kendes desuden en metode og et apparatur til sprajtning af planter med kemikalier. Sprajte-bommen er anbragt forrest pà en firehjulet vogn, og de udsprajtede kemikalier er derfor tilbajelig til at ramme 20 karetajet ved sprajtning i hajde over planterne. Kemikalierne udledes imidlertid i dette tilfælde netop i plantehajde i form af smà drâber. De udsprojtede kemikalier er derfor ikke folsomme for afdrift som felge af blæst og/eller den luftmodstand, der opstâr, nâr vognen karer hen over marken. En 25 væsentlig del af de anvendte kemikalier vil nædvendigvis ramme jorden og blive liggende pâ denne. Kemikalierne vil dernæst med regnvandet sive ned i jorden og forgifte sâvel denne som éventuelle forekomster af drikkevand. Metoden kræver anvendelse af unadigt store mængder sprajtemiddel og er i 30 praksis uanvende- lig til sprajtning i hajde over planterne.15. U.S. Pat. No. 2,976,647 also discloses a method and apparatus for spraying plants with chemicals. The spray boom is placed at the front of a four-wheeled wagon, and the sprayed-out chemicals are therefore likely to hit the 20-carriage floor when sprayed at a height above the plants. In this case, however, the chemicals are discharged into plant sharks in the form of droplets. The chemicals sprayed out are therefore not sensitive to drift such as rims of wind and / or the air resistance that arises when the wagon travels across the field. A significant part of the chemicals used will necessarily hit the ground and remain on it. The chemicals will then seep into the soil with the rainwater and poison both this and any deposits of drinking water. The method requires the use of unnecessarily large amounts of pesticide and is in practice unusable for spraying in height over the plants.
Formâlet med den foreliggende opfindelse er at anvise en markspraj te, som iiar samme gode egenskaber i henseende til màlrettet sprajtevæskefordeling, âbning af afgraden og mulig-35 hed for sprajtning med minimal væskemængde som de omtalte kendte marksprajter. Samtidig tilstræbes imidlertid en 4The object of the present invention is to provide a field sprayer which has the same good properties with regard to targeted spray liquid distribution, opening of the grade and possibility of spraying with a minimum amount of liquid as the known field sprays mentioned. At the same time, however, a 4
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marksprojte, som er lettere at betjene og i det hele taget er mere praktisk i brug end de hidtil kendte marksprojter af samme art, ligesom kravene til investering og vedligeholdelse skal steinme bedre overens med planteavlens okonomiske afkast-5 ningsevne.field spray, which is easier to operate and in general is more practical to use than the hitherto known field spray of the same kind, just as the requirements for investment and maintenance must be more in line with the plant breeding's economic viability.
Denne opgave lésés ifolge opfindelsen ved, at den nedadretted.e î.This task is read according to the invention in that the downward.e î.
luftstrom er af lignende art som luftstrommen fra en helikopter og pâvirker afgroden med en intensiv, nærmest 10 tæppelignende luftstrom, hvilken luftstrom omsiutter spr0jte-strâlerne, og at luftdyserne og væskedyseme indtager sâdanne stillinger i forhold til hinanden, at deres respektive udstromningretninger danner spidse vinkler sàledes, at den fordrâbede væske opblandes i luftstrommen umiddelbart under 15 sprcj tebommen. Dette medforer, at der kan anvendes et hojt sprojtetryk til at forstove sprojtevæsken til en fin tâge, som kan udsendes i hojde over planterne og er rettet mod disse, da denne tâge nu er skærmet mod afdrift af den nærmest tæppelignende luftstrom. Derved opnâs samme virkning som ved 20 anvendelse af konventionelle marksprojter med et, ait andet lige, betydeligt mindre forbrug af sprojtemiddel.air flow is similar to the air flow from a helicopter and affects the crop with an intensive, almost carpet-like air flow, which air flow converts the spray jets, and that the air nozzles and the liquid nozzles occupy such positions relative to each other that their respective outflow directions form sharp angles. , that the liquefied liquid is mixed into the air stream immediately below the 15 sprcj te boom. This means that a high spray pressure can be used to atomize the spray liquid into a fine mist, which can be emitted at a height above the plants and is directed towards them, as this mist is now shielded against drift by the almost carpet-like air flow. Thereby the same effect is obtained as with the use of conventional field sprays with a, ait otherwise equal, considerably less consumption of pesticide.
Da marksprojten kan opbygges pà basis af en konventionel hydraulisk marksprojte, pâ hvis sprojtebom luftstrâleudstyret, 25 som omfatter luftdyser, en blæser og tilhorende fordeler-slanger, monteres, er denne losning okonomisk fordelagtig for . mange landmænd, som allerede râder over en marksprojte, og som derfor fortsat kan anvende denne efter ombygning.Since the field sprayer can be built on the basis of a conventional hydraulic field sprayer, on whose boom the air jet equipment, which comprises air nozzles, a fan and associated distributor hoses, is mounted, this solution is economically advantageous. many farmers who already have a field project at their disposal and who can therefore continue to use it after conversion.
30 Blæseren drives ifolge opfindelsen af en hydraulikmotor, som sluttes til traktorens hydrauliske udtag ved hjælp af lynkoblinger. Traktorens mekaniske kraftudtag kan da Pâ sædvanli’g mâde anvendes til selve sproj tepumpen (væskepumpen) . 'According to the invention, the blower is driven by a hydraulic motor which is connected to the hydraulic outlet of the tractor by means of quick couplings. The mechanical power take-off of the tractor can then be used in the usual way for the spray pump (liquid pump) itself. '
Derved undgâs konstruktive komplikationer, ligesom losningen 35 giver let adgang til separat omdrejningsregulering af blæser- « en, f.eks. ved at indskyde en flowreguleringsventil mellemThis avoids constructive complications, just as the solution 35 provides easy access to separate speed control of the fan, e.g. by inserting a flow control valve between
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udtaget og hydraulikmotoren. Alternativt kan hydraulikmotoren være af variabel art.outlet and hydraulic motor. Alternatively, the hydraulic motor may be of a variable nature.
Den variable blæserydelse g0r det muligt at indstille sprojten 5 til optimal blæservirkning i aile afgroder. Eksempelvis k0res der med reduceret blæserydelse i stille vejr og i svagt udviklede afgr0der for at mindske væskeafsætningen pâ jord-bunden, medens blæserydelsen 0ges i blæsende vejr og i kraftigt udviklede afgr0der, hvor en kraftig "bearbejdning" af 10 afgroden er pâkrævet.The variable blowing performance makes it possible to set the sprayer 5 for optimal blowing effect in all crops. For example, reduced blowing performance is used in quiet weather and in poorly developed crops to reduce fluid deposition on the soil, while blowing performance is increased in windy weather and in heavily developed crops where a vigorous "cultivation" of the crop is required.
Ved en fordelagtig udforelsesform er der pâ begge sider af væskedyserækken anbragt en række luftdyser, der indtager sâdanne stillinger i forhold til væskedyserne, at deres respek 15 tive udstr0mningretninger danner spidse vinkler sâledes, at den fordrâbede væske opblandes i luftstrommen umiddelbart under sprojtebommen. Derved opnàs en fuldstændig opblanding af væskedrâberne i luftstrbinmen, inden den blandede luft/væske-stràle rammer plantedelene. Metoden indebærer den bedst itiulige 20 beskyttelse af væskedrâberne mod afdrift og giver samtidig anledning til en intensiv fordeling af drâberne i afgroden.In an advantageous embodiment, a series of air nozzles are arranged on both sides of the liquid nozzle row, which occupy such positions relative to the liquid nozzles that their respective outflow directions form acute angles so that the liquefied liquid is mixed into the air stream immediately below the spray stream. Thereby a complete mixing of the liquid droplets in the air stream is obtained before the mixed air / liquid jet hits the plant parts. The method involves the best possible protection of the liquid droplets against drift and at the same time gives rise to an intensive distribution of the droplets in the crop.
Der kan derfor anvendes en meget fin forst0vning af væsken med en yderligere reduktion af den medgâende mængde sprojtemiddel til folge.Therefore, a very fine atomization of the liquid can be used with a further reduction of the amount of spray to follow.
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Formâlstjenligt udnyttes spr0j tebommen i sig selv som fordelerkanal for blæserluften. Denne integrerede losning udmærker sig ved at være kompakt, materialebesparende og ved at tillade et enkelt og tiltalende design pâ spr0jten.The spray boom itself is expediently used as a distribution channel for the blower air. This integrated solution is distinguished by being compact, material-saving and by allowing a simple and appealing design on the sprayer.
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Opfindelsen forklares nærmere nedenfor under henvisning til tegningen, hvor fig. 1 viser en traktormonteret marksprojte med blæserudstyr 35 ifolge opfindelsen, set bagfra, 6The invention is explained in more detail below with reference to the drawing, in which fig. 1 shows a tractor-mounted field sprayer with blower equipment 35 according to the invention, seen from behind, 6
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fig. 2 et forst0rret lodret tværsnit gennem sprojtebommen langs linien II - II i fig. 1, fig. 3 et forstorret udsnit af sprojtebommen set i retning af 5 pilen III i fig. 2, fig. 4 sprojtebommen i en udforelsesform med dobbeltsidet î- luftdyse, vist i tværsnit, og 10 fig. 5 sproj tebommen i en udforelsesform med integreret luft-fordelerkanal og luftdyser.fig. 2 is an enlarged vertical cross-section through the spray boom along the line II - II in FIG. 1, fig. 3 is an enlarged section of the spray boom seen in the direction of the arrow III in fig. 2, fig. 4 shows the spray boom in an embodiment with a double-sided in-air nozzle, shown in cross section, and FIG. 5 spray boom in an embodiment with integrated air distributor duct and air nozzles.
I den pâ tegningens fig. 1-3 viste udforelsesform bestâr marksprojten i det væsentlige af en sproj tebom 1, en beholder 15 2 for sprojtevæske, en hydraulisk drevet blæser 3 og et antal luftdyser 4 med dertil horende luftfordelerslanger 5 indsat mellem blæseren og luftdyserne. Marksprojten, hvis sprojte-pumpe ikke er vist pâ tegningen, er ophængt i liften pâ en traktor T. Sprojtepumpen drives pâ sædvanlig mâde gennem en 20 kraftoverforingsaksel fra traktorens kraftudtag.In the embodiment shown in FIG. 1-3, the field spray essentially consists of a spray boom 1, a container 15 2 for spray liquid, a hydraulically driven blower 3 and a number of air nozzles 4 with associated air distributor hoses 5 inserted between the blower and the air nozzles. The field sprayer, whose spray pump is not shown in the drawing, is suspended in the lift of a tractor T. The spray pump is driven in the usual way through a 20 PTO shaft from the tractor's power take-off.
Spro j tebommen 1 bestâr af en vandret U-bjælke la, hvori et gennemgàende væskefordelerror 6 med tilhorende sprojtedyser 7 er indlejret. Sprojtedyserne er af sædvanlig hydraulisk art 25 med kegleformet eller fladoval strâlebillede (runddyse resp. fladdyse) . Dyseme er monteret pâ fordelerroret 6 med an- . boringsbeslag 8. Bommen 1 er pâ kendt mâde leddelt for sammenklapning under transport. Leddene er ikke vist pâ tegningen og skal ikke forklares nærmere her.The spray boom 1 consists of a horizontal U-beam 1a, in which a continuous liquid distributor tube 6 with associated spray nozzles 7 is embedded. The spray nozzles are of the usual hydraulic type 25 with a conical or flat-oval jet image (round nozzle or flat nozzle). The nozzles are mounted on the manifold 6 with an-. bore bracket 8. The boom 1 is articulated in a known manner for folding during transport. The joints are not shown in the drawing and will not be explained in more detail here.
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Ud for hver sproj tedyse 7 er anbragt en luftdyse 4 med en skràt nedadrettet dyseâbning 4a. Luftdysen, som har en flad aflang form, er fastgjort pâ siden af U-bjælken la med skruer lb. Luftdyserne befinder sig bag sprojtedyserne 7 · regnet i 35 korselsretningen. Denne er angivet med pilen A i fig. 2. Pâ · 4An air nozzle 4 with an obliquely downwardly directed nozzle opening 4a is arranged next to each spray nozzle 7. The air nozzle, which has a flat elongated shape, is fixed to the side of the U-beam 1a with screws lb. The air nozzles are located behind the spray nozzles 7 · calculated in the 35 direction of travel. This is indicated by the arrow A in fig. 2. Pâ · 4
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7 oversiden er hver luftdyse forsynet med en studs 10 for en fleksibel luftslange 5. Denne udgâr fra blæseren 3.7 the upper side, each air nozzle is provided with a connection 10 for a flexible air hose 5. This emanates from the fan 3.
Blæseren 3 drives af en hydraulisk motor 3a. Hydraulikmotoren 5 er tilsluttet traktorens bydrauliske udtag. En mængde-reguleringsventil indsat mellem udtaget og hydraulikmotoren tjener til regulering af hydraulikmotorens omdrejningstal og dermed blæserydelsen. Alternativt kan blæseren hâve et reguleringsspjæld til regulering af luftydelsen. Blæseren er 10 pâ afgangssiden forsynet med en manifold 9, hvortil slangerne 5 er tilsluttet. Manifolden er udformet med henblik pâ en ligelig fordeling af blæserluften til de enkelte luftdyser.The blower 3 is driven by a hydraulic motor 3a. The hydraulic motor 5 is connected to the contributory socket of the tractor. A flow control valve inserted between the socket and the hydraulic motor serves to regulate the speed of the hydraulic motor and thus the blowing performance. Alternatively, the fan may have a control damper for regulating the air output. The fan is 10 on the outlet side provided with a manifold 9, to which the hoses 5 are connected. The manifold is designed for an even distribution of the fan air to the individual air nozzles.
Under sprojtearbejdet i marken rettes en intensiv nærmest 15 tæppeformet luftstrom ned mod afgroden. Luftstrommen blander sig med den fra sprojtedyserne 7 udledte fordrâbede sprojtevæske umiddelbart under bommen, se fig. 2, og har til f0lge, at afgroden âbner sig under virkning af det dynamiske tryk fra luften. I selve afgréden, dvs. mellem stænglerne og 20 bladene, opstâr samtidig en turbulens, som bidrager til at fordele sprojtevæsken ind mellem planterne, sâledes at ogsà undersiden af bladene dækkes. Det forhold, at den fordrâbede sprojtevæske optages i den nedadrettede luftstrom, betyder, at sprojten kun i begrænset omfang er falsom for vindafdrift. Nâr 25 forst drâberne er bâret ned mellem plantedelene er risikoen for, at blæsten skal fere drâberne bort igen, minimal. · Afgroden virker i sig selv lægivende.During the spraying work in the field, an intensive almost 15 carpet-shaped air flow is directed down towards the crop. The air stream mixes with the liquefied spray liquid discharged from the spray nozzles 7 immediately below the boom, see fig. 2, and has the effect that the crop opens under the action of the dynamic pressure from the air. In the crop itself, i.e. between the stems and the leaves, a turbulence arises at the same time, which helps to distribute the spray liquid between the plants, so that the underside of the leaves is also covered. The fact that the liquefied spray liquid is absorbed in the downward air flow means that the spray is only to a limited extent false for wind drift. When the first drops have been carried down between the plant parts, the risk of the wind having to carry the drops away again is minimal. · The crop itself has a healing effect.
Et særligt effektivt værn mod vindafdrift opnâs ved at 30 beskytte væskedrâberne med et dobbelt lufttæppe, dvs. en dobbeltsidet luftstrom. Denne frembringes med specielle dobbelte luftdyser 10, se fig. 4. Hver dyse har en dyseâbning 10a foran og en dyseâbning 10b bag den resp. sprajtedyse 7. Blæserluften udledes i et tæppe foran og et tæppe bag 35 spr0jtedysen. Resultatet er en meget intensiv opblanding af den fordrâbede væske i luftstr0mmen og dermed en effektiv 8A particularly effective protection against wind drift is achieved by protecting the liquid droplets with a double air blanket, ie. a double-sided airflow. This is produced with special double air nozzles 10, see fig. Each nozzle has a nozzle opening 10a in front and a nozzle opening 10b behind the respective spray nozzle. 7. The fan air is discharged into a blanket in front and a blanket behind the spray nozzle. The result is a very intensive mixing of the liquefied liquid in the air stream and thus an efficient 8
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nedbringelse af sprojtevæsken i afgr0den uanset vindforhold-ene.reduction of the spray liquid in the crop regardless of the wind conditions.
I fig. 5 er sprajtebommen vist i en udforelsesform, hvor selve 5 bombjælken udg0res af en hulprofil 11 med integrerede luftdyser 12. Hulprofilen 11 tjener sont fordelerkanal for blæserluften og er tilsluttet blæseren gennem en ikke vist 1 slange. Væskefordelerroret 6 med tilhcrende dyser 7 er monteret pâ undersiden af hulprofilen langs luftdyserne 12.In FIG. 5, the spray boom is shown in an embodiment in which the bomb beam itself is constituted by a hollow profile 11 with integrated air nozzles 12. The hollow profile 11 serves as a distribution channel for the blowing air and is connected to the blower through a hose (not shown). The liquid distributor tube 6 with associated nozzles 7 is mounted on the underside of the hollow profile along the air nozzles 12.
10 Konstruktionsprincippet indebærer en kompakt og materiale-besparende opbygning af sprojten med relativt fâ luftslanger.10 The construction principle involves a compact and material-saving construction of the sprayer with relatively few air hoses.
- Hulprofilen 11 kan eksempelvis være formstobt af glasfiber-armeret polyester.The hollow profile 11 can, for example, be molded of fiberglass-reinforced polyester.
15 20 25 30 35 415 20 25 30 35 4
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK198402406A DK156806C (en) | 1984-05-16 | 1984-05-16 | Mark Spray |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK240684 | 1984-05-16 | ||
| DK198402406A DK156806C (en) | 1984-05-16 | 1984-05-16 | Mark Spray |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK240684D0 DK240684D0 (en) | 1984-05-16 |
| DK240684A DK240684A (en) | 1985-11-17 |
| DK156806B true DK156806B (en) | 1989-10-09 |
| DK156806C DK156806C (en) | 2000-09-04 |
Family
ID=8112154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK198402406A DK156806C (en) | 1984-05-16 | 1984-05-16 | Mark Spray |
Country Status (1)
| Country | Link |
|---|---|
| DK (1) | DK156806C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996017512A1 (en) * | 1994-12-09 | 1996-06-13 | Hedegaard Albert | A spray device for a plant protective measure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112934513B (en) * | 2021-01-29 | 2022-08-05 | 重庆重交再生资源开发股份有限公司 | Detachable spraying equipment and method thereof |
-
1984
- 1984-05-16 DK DK198402406A patent/DK156806C/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996017512A1 (en) * | 1994-12-09 | 1996-06-13 | Hedegaard Albert | A spray device for a plant protective measure |
Also Published As
| Publication number | Publication date |
|---|---|
| DK240684A (en) | 1985-11-17 |
| DK156806C (en) | 2000-09-04 |
| DK240684D0 (en) | 1984-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PDU | Decision on opposition: patent maintained as unamended | ||
| PUP | Patent expired |