TW201544185A - Lance having a narrow-angle fan nozzle for the manual deployment of pesticides over a particularly wide area with the aid of a portable backpack sprayer - Google Patents

Abstract

Lance having a narrow-angle fan nozzle for the manual deployment of pesticides over a particularly wide area with the aid of a portable backpack sprayer Lance (1) for a portable backpack sprayer, having an inlet-side connection (3a) for connecting the lance (1) to the storage tank belonging to the backpack sprayer, and an outlet-side connection (3b), wherein one or more fan jets (5a, 5b), each having a jet angle in the range from 15 DEG to 50 DEG, are arranged in the region of the outlet-side connection (3b) of the lance (1). Lance, nozzle and adapter set for connecting the lance (1) to portable backpack sprayers from different manufacturers. Use of the fan nozzle and the lance equipped therewith for the manual deployment of pesticides over a wider area, in particular in an irrigated paddy field.

Description

Nozzle with narrow-angle fan nozzle for large-scale application of insecticide in a large area by a portable backpack sprayer

The invention relates to a nozzle for a portable carrying sprayer, the nozzle has: an inlet side connecting portion for connecting the nozzle to a storage tank belonging to the negative sprayer; and an outlet side connecting portion for attaching one nozzle. Furthermore, the present invention relates to a new method of using nozzles, nozzles and adapter sets equipped with and modifying spray tubes or carrying sprayers and also associated with narrow angle nozzles.

A backpack sprayer and a spray device for applying insecticides are disclosed in the patents FR 1398142, US 2004069817, US 2577687, GB 191402260, WO 2004/091293 and BE 1009984.

Patent WO 2009/080238 A1 discloses a spray tube which is suitable for portable backpack sprayers from different manufacturers and for more even dispensing of the spray while maintaining a low application rate. A more uniform dispensing of the spray is achieved by a distance controller.

The distance controller ensures that the operating height can be easily controlled by the user. Due to the possibility of this control, the user can keep the operating height fixed when the user uses a spray tube disclosed in WO 2009/080238 A1, so that the spray cone sprays one The processing area, which substantially remains the same in size. In this way, it is ensured that the spray is evenly dispensed and that the need to maintain a low application rate is met.

When an application rate is less than 100 liters/ha, it is considered "low".

Maintaining an application rate of about 50 liters/ha is a very high indicator when applying crop protection agents using a backpack sprayer that incorporates one of the known sprays. In contrast to dispensing the spray through the application bar, the application covers the area of the cultivated land to be treated once, when a spray tube is used, It is impossible to avoid moving the spray tube multiple times above the area of the cultivated land to be treated. The risk of double treatment is generally greater, and the spray is more finely sprayed through the nozzles belonging to the spray tube. For the above reasons, it is completely impossible to obtain an application rate in the range from 30 liters/ha to 20 liters/ha using one of the conventional spray tubes.

A backpack sprayer consists of: a reservoir; typically can be worn on the back via a shoulder strap; and a spout having an inlet side opening connected to the reservoir by a hose and having an outlet side opening for Disperse a nozzle of a spray, a spray tube or a spray bar. A shut-off valve can be disposed in an area provided to guide the handle of the nozzle. The spray spray is delivered by a manually or mechanically operated pump.

The pressure that can be produced by a manually or mechanically operated pump incorporating a sprayer is between 0.1 and 6 bar, in particular between 0.5 and 4 bar.

Since the conventional backpack sprayer is used to apply a spray target in the form of as fine a droplet as possible (i.e., to produce a target that is as fine as possible), the spray tube is equipped with a nozzle which already has A fully developed spray cone (spray fan) having a range between 1.0 and 1.5 bar.

In essence, two different nozzle forms are used for crop protection. The use of cultivated crops (cereals) is usually made of fan-shaped nozzles, while for high-growth crops (fruit growing, viticulture), empty cone nozzles are used. Fundamentally, the empty cone nozzle atomizing spray is a fine droplet (that is, the hollow cone nozzle produces a finer droplet than the fan nozzle) and is less suitable for regenerating the pressure range applicable to the portable backpack sprayer. .

Due to their spray pattern, empty cone nozzles are less suitable for applying crop protection agents over a large area. This also applies when the hollow cone nozzle has a relatively small spray angle of, for example, 45°.

Therefore, in practice, since their ranges are limited due to the ejection form of the empty conical nozzles, they are used. In the case where the above-described hollow cone nozzle is preferably used in a high growth crop, a small range is even advantageous and therefore required.

In the case of the conventional use of two nozzles, the target is to produce a fine spray by atomization of the spray, i.e., the split spray is a small droplet. In this case, atomization into excessively small droplets is not required because the excessively small droplets are even at risk of being blown away by the light wind and can also mean that the wearer carrying the sprayer is at increased risk of contamination.

In the case of nozzles approved for use in sprayers in the field of mechanical operation, the drop pattern at low pressure is in the range of between 900 microns and 2000 microns. By increasing the pressure, the droplet size is reduced. Therefore, a pressure of at least 3 bar is recommended for the conventional plot crop protection treatment by a sprayer in the field of mechanical operation.

The fan nozzles most commonly used in agriculture have an injection angle of more than 100°, in particular 110° or 120°. The jet angle of a fan nozzle used in connection with a known backpack sprayer is sometimes 100° less, but much larger than 50°.

The spray procedure is based on the hydraulic pressure and nozzle-based aperture function that the nozzle is subjected to. When the liquid circulates outside the nozzle, the hydraulic pressure collapses, that is, the pressurized liquid suddenly becomes loose after passing to the nozzle opening. Since this is loose, a smooth liquid sheet is first produced. This smooth liquid sheet quickly loses stability and is first changed into a sheet having a wavy structure which in turn collapses into liquid lines and finally changes to individual droplets. The above procedure is known as "jet disintegration".

The theoretical spray width of the nozzle is determined by the spray angle and by the spray height relative to the target area. In this case, it is known that depending on the nozzle form and depending on the nozzle size, the hydraulic pressure has an effect on the injection angle and the accuracy of the dispersion.

Furthermore, particularly in the case of a fan-shaped nozzle having a large spray angle, it can be observed that, based on the above, the spray disintegration is physically caused, and the effective spray width is smaller than the theoretical spray width, especially in Low pressure and high injection height.

The fan nozzle used in the case of the conventional backpack sprayer has an injection angle much larger than 50°. For example, a backpack sprayer having a spray tube specially equipped with an injection angle of 80° for performing well-known local treatment is known.

A fan spray having an injection angle of less than 50° is not provided for use with conventional spray tubes that are used in conjunction with known backpack sprayers, and this is not possible due to insufficient amounts of liquid. This is because the target of dispensing the spray with a known backpack sprayer is as fine as possible of the atomization of the spray to achieve the highest possible liquid repellency in the conventional sense.

The spray used for dispensing can consist of one or more crop protection agents, water and optional adjuvants and additives. For the use of nozzles for dispensing sprays, uniform dispersion of all components is an indispensable prerequisite.

The application of pesticides, especially the herbicides, can be based on a rectangular base mode (band treatment), according to a circular base mode (circular treatment) or as described above, for individual miscellaneous Grass, such as local processing is carried out.

The nozzle according to the present invention, and the method of use based on the nozzle, are intended to improve the strip treatment in which the crop protection agent is allowed to disperse in a particularly large area.

In the strip process, the spray is sprayed on the area in front of the wearer in the moving direction. During the dispensing of the belt, the nozzle is repeatedly reciprocally moved in a vertical direction.

In a known backpack sprayer equipped with a spray nozzle, the pendulum movement determines the extent of the ribbon treatment transverse to the direction of movement of the wearer carrying the sprayer. In this case, the maximum processing width is determined by the length of the nozzle and of course by the length of the wearer's arm of the nebulizer, and is thus limited. The dispensing of a conventionally generated spray that exceeds the range of pendulum movement is not provided, especially since the spray is applied over a wide range by the high air resistance of the droplets.

When the known backpack sprayer is used, the illustrated limitations are associated with the disadvantage of having a relatively wide planting area that takes a long time. Moreover, in a dispensing form that may utilize known backpack sprayers, the wearer more often directly contacts the sprayed spray. This is a situation only because when a conventionally equipped nozzle is used, the spray of liquid spray occurs at a short distance from the wearer and the dispensing area is often in the direction of movement of the wearer of the sprayer. This is because, during the ribbon processing, the wearer carrying the sprayer moves over the previously sprayed area. The distance per unit area covered by a wearer of a conventionally equipped piggyback injector during processing of the planting site is typically very long.

Moreover, it is easier to inhale a system containing very fine droplets. At the same time, the area of skin contact with the wearer carrying the sprayer increases with the fine spray.

In order to protect the health of the wearer carrying the sprayer and the need for sustainable use (sustainability) of natural and environmental resources, there is a need to improve the application technique of portable backpack sprayers. A reduction in the amount of application and as far as possible to protect a healthy dispensing is necessary because the wearer carrying the sprayer is protected as far as possible from the distance per unit area that is directly contacted with the spray and covered by the wearer during the treatment of the plantation. the smallest.

In a disadvantageous manner, when used in practice, a conventional backpack sprayer equipped with a spray device usually produces a large amount of pesticide application over a large area of the insecticide sprayed by a motorized field sprayer. The amount applied is 300-600 liters/ha. However, in many countries, For special crops, such as rice crops, artificial sprays are used as much as possible by portable backpack sprayers for purely economic reasons.

Accordingly, the present invention is intended to allow for the artificial application of a crop protection agent over a wide area to the entire area and in a health protection manner with a particularly large operating width.

Against this background, the object of the present invention is to provide a nozzle suitable for manual spray dispensing, which can be used in combination with a portable backpack sprayer manufactured by different manufacturers, and in order to protect the wearer's health (user protection) and to implement The principle of resiliency, while maintaining a low application rate, for example by avoiding drift, allows the spray to be dispersed over a particularly large area compared to known spray tubes.

This object is achieved by a nozzle for a portable carrying sprayer according to patent application No. 1 for a manual spray facility.

The essence of the invention relates to the use of a sector nozzle featuring a relatively small spray angle. This feature of the nozzle does not produce a uniform spray and does not produce a correspondingly wide drop profile when a low pressure is applied to the low pressure but exhibits an early spray disintegration. This is related to the fact that the above-mentioned spray disintegration occurs more quickly at a relatively low pressure generated by a pump on a backpack sprayer.

In the case of a nozzle having a small injection angle, the ejection disintegration also occurs in an accelerated manner with respect to the nozzle having a large injection angle. If a low hydraulic pressure is applied to a nozzle having an injection angle of less than 50, the ejection disintegration occurs surprisingly. The spray does not disperse in the form of a uniform spray consisting of very fine droplets, but rather in the form of distinct liquid particles or even in the form of a thin liquid jet having a uniform appearance.

For the protection of the user, the use of the nozzle according to the invention has the advantage not only in the reduction of the contact time and the contact area, but also in the fact that the number of strokes per unit area for the treatment of the planting site can be Expected to be greatly reduced.

The spray angles of the fan-shaped nozzles hitherto used for crop protection to produce a uniform spray are in the range from 80° to 120°. In contrast, the nozzle form used in accordance with the present invention is preferably a sector nozzle featuring a narrow jet angle between 15° and 50° while having a small volume flow (flow rate).

The flow rate of this novel form, at a pressure ranging from 1 bar to 5 bar, is Preferably, it is between the range of from 0.2 liters per minute (liters per minute) to 5 liters per minute, particularly preferably in the range of from 0.5 liters per minute (liters per minute) to 5 liters per minute.

If a low hydraulic pressure is applied to a nozzle having an injection angle of less than 50°, the sheet (i.e., the portion of the spray in the region of the nozzle opening) is already uneven and rapidly disintegrated into individual liquid lines and Ultimately, individual liquid particles of significant size that are already recognizable by the human eye, jet rupture occurs faster.

When the spray is dispersed in the form of a liquid line or a spray and when the spray is dispersed in the form of distinct particles, the spray can be dispersed when the continuous pendulum movement of the nozzle is performed. The liquid is above a large area. The continuous pendulum movement of the nozzle results in a dispersion above the extra wide area of the drop spectrum which is generated in the early jet disintegration of the narrow angle sector nozzle. (Depending on the driving force associated with the movement of the pendulum, the droplets are scattered over a very wide area under the influence of gravity.) In contrast, when a uniform spray is used from 80° to 120° The range of spray angles between the nozzles is generated, and the pendulum movement of a nozzle does not have a significant effect on the dispensing width.

In the case of a nozzle having a conventional length ranging from 80 cm to 120 cm, the width (expansion) of the liquid particles of the liquid particles extends over an area of about 2 by 4 meters, that is, a total of About 8 meters on the area.

The average performance of the dispersion of the crop protection agent is achieved by a configuration of a plurality of nozzles having narrow injection angles which are disposed on the outlet side connection of the nozzle. In each case, such a plurality of nozzles can be arranged parallel to each other, opposite each other or star-shaped with respect to each other.

The material of the nozzle can be plastic, copper, stainless steel, hardened stainless steel or ceramic. In the case of nozzles of multiple partial architectures, individual components (e.g., nozzle inserts and nozzle housings) can also be constructed from different materials, and thus multiple partial nozzles comprise a combination of two or more of the materials.

In a preferred embodiment, the sector nozzles that connect the outer joints of the nozzles each have an injection angle in the range from only 15° to 25° in each case. This preferred nozzle form consists of a fan nozzle that has heretofore been used to remove the burrs of the metal sheet.

The use of fan-shaped nozzles used in the metal industry to remove the burrs of metal sheets features the fact that they do not form sprays even at high pressures. When the hydraulic pressure is low, as in the case of a backpack sprayer, when exiting the nozzle opening, the fan nozzle used to remove the burr of the metal sheet and has a range from 15° to 25° The liquid flakes in the case of spray angles between the ranges lose stability even faster and become a corrugated sheet in a corresponding acceleration process and disintegrate surprisingly quickly into liquid lines or distinct liquid particles.

In the case of fan-shaped nozzles which have heretofore been used only for the burrs of metal sheets, their size can be dispersed by the acceleration of the liquid particles dispersed in a relatively large area by the movement of a pendulum of the nozzle. In a very large area.

The nozzle system used in accordance with the invention not only features a narrow injection angle between the range of 15° to 50° but also features additional characteristic parameters. These additional parameters are related to the pressure range and flow rate. It is particularly preferred that the pressure between the ranges of 1 to 5 bar has a nominal flow rate between 0.2 liters/minute and 5 liters/minute.

In a particularly preferred embodiment, the two parameters of the nozzle used that are related to pressure and flow rate are in a narrower range. In this embodiment, the nozzle used in each case has a flow rate in the range of 1 to 3 bar having a flow rate in the range of 1 liter/minute to 3 liter/minute, in particular Flow rate between 1.14 liters/min to a range of 1.97 liters/minute.

The invention further provides a particularly preferred embodiment: a nozzle equipped with a nozzle having a nominal flow rate of 2.55 liters per minute at a pressure of 5 bar, wherein the flow rate is varied by +/- 5%. One nozzle that meets these needs is a 652.483.5 E-type fan nozzle manufactured by Lechler GmbH in Metzingen, Germany.

Due to the wide range of spray jets, the above-described fan sprayers are particularly suitable for achieving the goal, which is achieved by narrow spray angles and by large droplet sizes.

In another preferred embodiment, the outlet side connection of the nozzle is connected to a curved member. The bent piece is a pipe section that is bent relative to a central section of the intermediate section of the spout. The arched pipe section has an inlet side connection portion and an outlet side connection portion as the nozzle itself. The inlet side connecting portion of the bending member is provided to be connectable to the outlet side connecting portion of the nozzle.

In the case of the present invention, the feature of the flexure is configured relative to the handle of the spout and the direction of and direction of movement of the wearer carrying the sprayer such that the outer opening of the flexure is directed forward or backward. Thus, the angle between the outer section of the curved member and the centerline of the intermediate section of the nozzle is between 45 and 140 degrees. In this case, at an arc angle of 45°, the outlet side opening is substantially directed upward, and at an arc angle of about 140°, the outlet side opening is substantially directed forward, that is, in the direction of movement of the wearer of the sprayer.

In the case of a known spray tube, the curved part connecting the outside of the spray tube is pointed under. In other words. The outer opening is directed downward relative to the centerline of the nozzle or to the direction of line of sight and movement of the wearer carrying the sprayer. The reason for this is that when the soil crop is treated with a known spray tube, the spray is sprayed down in front of the wearer's front with respect to the wearer's line of sight and direction of movement. In contrast, the object of the present invention is to dispense liquid from a nozzle in a relatively large droplet or in the form of a spray which is dispersed in a much larger area.

The curved member can be constructed from a rigid tube material. In a particularly preferred embodiment, the curved member is also provided from a flexible tubular material such that the angle of the curved member is variably set relative to the centerline of the intermediate portion of the nozzle, that is, the radius of the curved member is Changed or modified. The advantage of adaptability to the needs of individual users is combined with the variable setability of the flexures. The curved member can also be an angled tube section having a short end section. In this case, the curved piece is recognized as a corner piece.

Another point of view for achieving the purpose is related to the variability of the length of the nozzle. Since the radius of the pendulum moves and the expansion of the liquid particles also increases as the length of the nozzle increases, the application of the spray to an even larger area can be achieved by increasing the length of the intermediate nozzle section.

Variations in the length of the nozzle can be achieved in a variety of ways, and two alternatives are disclosed below.

In an embodiment of the nozzle, the change in length of the nozzle is achieved in the middle section of the nozzle having two tubes, one of which is telescopically guided inside the other and each tube having a circular or polygonal shape section. In this case, one tube that is movably guided inside the other has a liquid-tight connection, and thus the inside of the tube can be supplied with a liquid. In other words, the spray can be introduced into the internal space formed by the tube, wherein the connection point between the two tubes and the internal space enclosed by the inside of the other two tubes are liquid-tight.

In an alternative embodiment of the nozzle, the change in nozzle length is achieved based on the fact that the intermediate section of the tube has: two profiles, one being telescopically guided inside the other and each profile having a circular or polygonal shape Section; a pipe section made of a flexible material. Thus, the pipe section is at least partially configured parallel to one of the two profiles that are telescopically guided inside the other.

In the case of the alternative embodiment described above, one of the two profiles that are telescopically guided inside the other does not have to conduct liquid, since this function, that is to say the discharge of liquid from the reservoir to the nozzle, It is executed by the pipe segment. A profile that is telescopically guided inside the other is used in this embodiment only as a length change carrier. Therefore, the inner profile can also be composed of a hard material. Thus, it will be appreciated that a rigid material having a circular cross-section is telescopically introduced into a hollow profile that also has a circular cross-section. The stability of the nozzle can be advantageously increased due to the use of a hard material.

A section of the tube which consists of a flexible material and which flows into the nozzle, at least partially parallel to one of the two profiles which are guided in a stretchable manner, can be formed by a plastic hose. A plastic system which is characterized by high resistance to insecticides and is known to those skilled in the art is preferred.

A stepless approach can be provided for the change in length of the nozzle. Thus, the components of the nozzle that are movable relative to each other can be fixed in a stepless manner. The specific length at any time can vary.

It is also within the scope of the invention to have the outer joint of the nozzle additionally connected to a pressure valve.

When delivering the spray from the tank, the constant pressure valve ensures that the flow rate is very independent of the hydraulic pressure generated by the pump. Especially in the case of manually operable pumps, the pump can be operated by a particular user to produce large changes in flow rate. This disadvantage is compensated by the installation of a certain pressure valve. The constant pressure valve thus keeps the applied amount low and average. If the outlet side of the nozzle is connected to a curved member, the constant pressure valve can be disposed on the outlet side of the curved member.

Another aspect of the invention relates to nozzles, nozzles and adapter sets of portable sprayers produced by different manufacturers.

In addition to a nozzle of one of the above embodiments, the set comprises one or more adapters for connecting a nozzle in one of the above embodiments to a reservoir carrying a sprayer, ie Connect to the connection hose that holds the tank of the sprayer. A possible use of such an adapter is produced at the inlet side section of the hose and at the outlet side section of the hose. The nozzle, nozzle and adapter set further comprise an injection angle in the range of 15° to 50°, preferably an injection angle in the range of 15° to 25°, in order to detachably fix the nozzle To the nozzle, the bayonet cataches are provided in each case.

In a particularly preferred embodiment, the nozzle, nozzle and adapter set also include a pressure valve. The pressure of the constant pressure valve in the range of 1 to 5 bar produces a nominal flow rate in the range of 0.2 liters/minute to 5 liters/minute. Due to the use of the constant pressure valve, a certain pressure is applied to the nozzle evenly regardless of the manual pump output of the wearer carrying the sprayer.

It is also within the scope of the invention to have the nozzle have a hand in the region of the inlet side connection and selectively allow the disconnect valve to be additionally disposed in this region.

Another aspect of the present invention is related to a portable backpack sprayer featuring the fact that it is equipped with a nozzle in one of the above embodiments. Therefore, a backpack sprayer equipped with a nozzle according to the present invention can be used to achieve the above object.

A particular use of the nozzle according to the invention for spray application in an irrigated rice field (rice) is a particularly interesting aspect of the invention. The particular use is based on the discovery that the spray does not necessarily have to be dispensed as a spray in a wet paddy field.

The direct connection between the wearer carrying the sprayer that is not protected in the foot area and the dispensed spray should be avoided as much as possible. If the spray is applied as a fine spray and is so rapidly dispersed in the water directly in front of the wearer, the avoidance of the contact is not possible, when the spray is dispensed as a spray, only due to the liquid particles The small increase in size and air resistance is unlikely to allow the spray to be dispersed over a very large area. Due to the small size of the spray drops, they risk a large drift if they are windy.

It is possible to dispense the spray to a relatively large width only by producing larger and thus heavier liquid particles, the liquid particles being at least so large that they are not considered a spray. If a wind is generated, droplets of this size are not drifted away. In this case, by means of the nozzle, the droplets can be accelerated to a relatively large distance and thus can be dispersed in a larger area. By the time the larger liquid particles are applied to the surface of the water, the wearer carrying the sprayer has advantageously passed through the sections treated in each case. Moreover, due to the reduced contact with the crop leaves, the above-described manner of application can produce an improvement in phytotoxicity.

The particular use of spray-sprayed nozzles in an irrigated rice field (rice), in particular the application of insecticides, has two advantages over conventional dispensing methods. First, the dispensing is more time-saving because it can occur in a larger area, ie the working width (width of the dispensed) is expanded by the use of the nozzle according to the invention, thus the overall application rate (liters per hectare) Can be reduced. Second, the use of a nozzle spray equipped in accordance with the present invention dispenses a large area to minimize contact area and also minimizes contact time. Therefore, the use of the nozzle is more protective of the wearer's health than the conventional nozzle.

Thus, the use of a narrow-angle fan nozzle that can be coupled to a nozzle that is attached to a backpack sprayer is advantageous for the risk of contamination because the dispensing of liquid particles in the water of the paddy field is delayed. The way it happens. If applied, that is, the dispensing of the spray occurs in the area in front of the wearer, the wearer carrying the sprayer walks past the dispensed particles before the particles have been uniformly applied to the surface of the paddy field. A majority. When nozzles are used in irrigated paddy fields, the improvement in toxicity to crops is particularly large due to the reduced contact with the leaves of the crops, with the goal of controlling harmful plants that are not impaired.

The advantage of the protection of the user in the case of lateral application is even greater, and the nozzle according to the invention allows the spray to be exclusively dispensed from the edge of the paddy field by the movement of the spray through the nozzle. In this case, the user's contact with the irrigated planting area is completely avoided when being dispensed.

The use of one or more fan nozzles for dispensing crop protection agents having an injection angle between 15° and 50° has heretofore been unknown. Therefore, another aspect of the present invention relates to the novelty of use itself.

In particular, the above aspect of the invention relates to the use of a fan nozzle having an injection angle between the range of 15° to 25°, wherein the additional characteristic of the fan nozzle is between 1 and 3 bar, It has a flow rate in the range of 0.2 liters/minute to 3 liters/minute.

When used for delamination of the metal sheet, the nozzle form which was originally developed for the burr of the metal sheet with an injection angle between the range of 15° to 25° is of course used with a much higher water pressure.

Thus, the scope of the invention is also related to the use of one or more sector nozzles having an injection angle between the range of 15° and 50° for equipping or retrofitting a portable backpack sprayer or for Equip or modify a nozzle that is used to apply pesticides. a fan nozzle having an injection angle between the range of 15° to 25° and having a flow rate between the range of 0.2 liters/minute to 3 liters/minute, in particular between 0.5 liters/minute to 3 liters/minute A fan-shaped nozzle of flow rate, a pressure range between 1 and 3 bar is particularly suitable for the above purpose.

1‧‧‧ nozzle

2‧‧‧Intermediate nozzle section

2a‧‧‧Inlet side intermediate section

2b‧‧‧Outlet side intermediate nozzle section

3a‧‧‧ entrance side connection

3b‧‧‧Exit side connection

4‧‧‧Connecting hose

5a‧‧‧Nozzles

5b‧‧‧ nozzle

6‧‧‧ Constant pressure valve

7‧‧‧Bending parts

8‧‧‧handle

Developments, advantages, and possible applications of the present invention can be gathered from the following illustrative examples and illustrations. All of the features are recited and/or illustrated from the subject matter of the invention itself or in any combination of requirements, regardless of how they are summarized in the scope of the patent application or the scope of the patent application.

In the drawings: Figure 1 schematically shows a component of a nozzle having a length of intermediate member; Figure 2 schematically shows a member of a nozzle having an adjustable length intermediate member; and Figure 3 schematically shows an illustration of a spray disassembly .

Fig. 1 shows a nozzle 1 which is connected to a connecting hose 4 at an inlet side connecting portion 3a. The connecting hose 4 leads to a reservoir (not shown) carrying the sprayer. In the outlet side connecting portion 3b, the nozzle 1 is connected to the fixed pressure valve 6. The constant pressure valve 6 connects the bending members 7 in turn on the outlet side. The fan nozzle 5a is disposed on the outlet side of the bending piece 7.

The bending member 7 is formed such that the angle between the top side of the intermediate section of the nozzle 1 and the outlet side section of the bending member 7 is between 45 and 140 degrees. Therefore, the outlet side opening of the bending piece 7 having the nozzle 5a does not point downward but is directed forward or upward.

Due to the shape of the curved member 7 and in particular due to the special arrangement of the curved member 7, a pendulum-like liquid movement of the nozzle 1 is possible, and this pendulum movement combined with a fan-shaped nozzle advantageously enables manual application of a crop protection agent. In a very large area. The advantage of combining novel dispensing is particularly effective in applying crop protection agents to irrigated rice fields.

Figure 2 shows a nozzle 1 having an intermediate section 2 of adjustable length. In the example shown, the inlet-side intermediate nozzle section 2a is telescopically guided into the outlet-side intermediate nozzle section 2b. Since the two segments 2a and 2b are extended, the length of the nozzle can be increased to approximately more than 50% of the length of the normal nozzle in the illustrated example.

As the length of the intermediate nozzle section increases, the spray can be advantageously applied to a wider area. When an adjustable length nozzle is used, the width of the area to be treated in one operation may exceed 10 meters or even exceed 12 meters.

Figure 3 shows the well-known spray disintegration, which occurs when the spray is ejected. When the spray is ejected from the nozzle outlet, the hydraulic pressure drops, that is, the pressurized liquid is suddenly loose.

Because of this looseness, a smooth liquid sheet is first produced. This smooth liquid sheet quickly loses stability and is first changed into a sheet having a wavy structure. The corrugated sheets are quickly disintegrated into liquid lines and finally become individual droplets.

If a narrow-angle fan nozzle is loaded with an extremely low hydraulic pressure, the spray disintegration even occurs faster, and the narrow-angle fan nozzle has an injection angle between 15° and 50°, in particular A fan nozzle having an injection angle between the range of 15° to 25°.

1‧‧‧ nozzle

2‧‧‧Intermediate nozzle section

2a‧‧‧Inlet side intermediate section

2b‧‧‧Outlet side intermediate nozzle section

3a‧‧‧ entrance side connection

3b‧‧‧Exit side connection

4‧‧‧Connecting hose

5a‧‧‧Nozzles

5b‧‧‧ nozzle

6‧‧‧ Constant pressure valve

7‧‧‧Bending parts

8‧‧‧handle

Claims (15)

An artificial spray-sprayed nozzle (1) having: an inlet-side connecting portion (3a) for connecting the nozzle (1) to a reservoir belonging to a negative sprayer; and - an outlet-side connecting portion (3b) One or more of the fan-shaped nozzles (5a, 5b) are disposed in the region of the outlet-side connecting portion (3b) of the nozzle (1), wherein each of the fan-shaped nozzles (5a, 5b) has a The spray angle between the range of ° to 50°. The nozzle (1) of claim 1, wherein the nozzles (5a, 5b) connected to the outlet-side connecting portion (3b) have a range of 15° to 25° in each case The angle between the sprays. The nozzle (1) of claim 2, wherein the nozzles (5a, 5b) connected to the outlet-side connecting portion (3b) have a pressure between a range of 1 to 5 bar Rated flow rate between the range of 0.2 liters/minute to 5 liters/minute. a nozzle (1) according to claim 3, wherein the nozzles (5a, 5b) connected to the outlet-side connecting portion (3b) have a pressure of from 1 to 3 bar in each case A nominal flow rate between 1 liter/min to 3 liter/min. A nozzle (1) according to claim 1 wherein the bending member (7) is configured such that the top side of the intermediate section (2) of the nozzle (1) and the curved member (7) The angle enclosed by the exit side section is between 45° and 140°. A nozzle (1) according to claim 1 wherein the intermediate section (2) of the nozzle is formed from two profiles which are telescopically guided one inside the other and each of the profiles There is a circular or polygonal cross section in which a seal is disposed between the profiles. The nozzle (1) of claim 1, wherein the intermediate section (2) of the nozzle comprises: - two profiles (2a, 2b), one of which is telescopically guided inside the other and each The profile has a circular or polygonal cross-section; and - a tubular section made of a flexible material; wherein the tubular section is at least partially configured parallel to the two profiles that are guided in the other internal telescopic system. A nozzle (1) according to claim 6 wherein the length of the intermediate section (2) of the nozzle is changeable in a stepless manner, wherein the specific length of the nozzle is temporarily fixed. A nozzle, nozzle and adapter set for equipping a portable backpack sprayer manufactured by any desired manufacturer, having: a nozzle according to any one of claims 1 to 8; And one or more fan nozzles (5a, 5b), each nozzle having an injection angle between 15° and 50°; and also one or more adapters for connecting the nozzle (1) To any desired tank or to a connecting hose (4) to the tank. For example, in the group of claim 9th, the group also includes a pressure valve (6), wherein the pressure valve (6) generates a pressure of 0.2 liter/minute in a range from 1 to 5 bar. Rated flow rate between the range of 5 liters/min. A portable backpack sprayer, wherein the backpack sprayer is equipped with a nozzle (1) as claimed in claim 1. The use of a nozzle (1) as claimed in claim 1 or the use of a sprayer as claimed in claim 11 allows the spray to be applied to an irrigated paddy field. The use of a fan-shaped nozzle (5a, 5b) for applying a crop protection agent, wherein the sector nozzle (5a, 5b) has an injection angle between 15 and 50. The use of a fan-shaped nozzle (5a, 5b) according to claim 13 wherein the nozzle (5a, 5b) has an injection angle in the range of 15° to 25°, wherein the sector nozzle is in a slave The pressure between the ranges of up to 3 bar has a flow rate between the range of 0.2 liters/minute to 3 liters/minute. Use of one or more sector nozzles (5a, 5b) for equipping or retrofitting a portable backpack sprayer, wherein the nozzles (5a, 5b) have a jet between 15° and 50° angle.