DE1607404A1 - Backpack crop protection device - Google Patents

Description

Backpack plant protection device The invention relates to a backpack plant Protective device For optional discharge of Sph®e Dust, mist, Spritz-9 or granulate agents with one above a drive unit and one with this drive-connected ebläseo arranged Container for the Aufm o the Austtelse as well with an to that with e% Y @, Lütz6chter Acqe vergaoa® cherish blower and the ha,, a, gechhc @ otf4, - channel and one to i @ l @ i eineetl @ t with belts up®i®end® @ mtracrriht4 At acquaintances. SprZihgetau A: Leuer t bQin0, et olle the fan above the tcre # wcdurQt, look like also with, devices with a horizontal bläceachee functionally powerful structure results. iepielEo® white are at. the knownenerätearsrhl.tnie @ .; nei strength the discharge channel, in particular in connection with the outlet opening of the blower required so that the discharge channel is hand-sized comes to rest, with a strong curvature Can cause a performance loss of up to 40%. This loss of performance in turn makes a correspondingly large dimensioning of the fan as well of the drive motor required, which makes the device has a relatively large weight. Even can the internal combustion engines of the known devices can hardly be thrown at shouldered because the Starting device due to the special nature of the engine For this purpose, there are no functionally appropriate nails. takes. Vie5eb- ü $ s the device z _, throw on the Loden ges ^ @ ren, after which. with one edge the Starter pre- operated .t, nd with the other hand the device is held against. There are also knew the individual parts or units of the Motor fan not easily accessible. ? eer is at the. known devices disadvantageous * because the container is un- indirectly or exclusively at the Mckontrag- '. device is attached, making it relatively stable, that is, devoted to aase. The basic task of the 3rfindu is to device of the type described in an «to train in this way» The stream parts of the known devices were avoided. In particular, the forced air stream to be geftihrt so that it is subjected to a low heistungsverlust. The device should be easy to anwerfeen in. Shouldered condition. Furthermore, it should be possible to design the device to be light in weight and to be of simple construction with great stability.

In a rtfckentxgbaren plant protection device for selectively discharging spray = Stäube- 'fog, or Sprits- Granulatmitt®ln having disposed above a drive motor and a blower connected with this antriebe- container for receiving the discharging means, and mixes with a to the about lotrechter.Aohee provided blower and the container connected to the discharge channel and, for example, a back support plate with straps up facing Wückentragvorrichtuag is the fan erfindungegemäes disposed below the engine, so that therefore the motor between the blower and containers arranged dead. as a result, the motor can be directly on the Blower are placed, a structurally simple arrangement is formed in which the engine accessories, such as carburetor, ignition device and in particular the evaluation device are easily accessible. 7eraer is the fan in this embodiment de that the Austagkanal Irvine special rrUnnangen must have.

According to a further feature of the invention, the Zylinderachee horizontally disposed is the side nungs- as combustion, preferably two-stroke engine configured drive motor provided in parallel to the back plane, the cylinder DAB space-saving and is arranged reasonable protected, the cylinder advantageously on the side remote from the discharge channel of the Motor shaft axis and thus a favorable weight distribution results on both sides of the motor shaft axis. Due to the inventive design of the crankcase of the engine can be directly connected to the blower housing, wherein in a further simplification of the training erfindungegemäseen the crankcase is formed half by the fan housing. , The sprayer according to the invention a starter unit, so this is conveniently above the engine, preferably provided between this and the loading container, so that the handle is of the starter unit in easy-grip position above the discharge channel. Advantageous here is the 'a by a coupling, such as a self-acting one-way clutch can be connected to the motor shaft rope reel comprising, coaxially to the starter unit Notorwelle and thus space-saving. In a further simplification of the subject matter of the invention, the housing of the starter device forms the upper half of the crankcase, so that a special engine block or a special crankcase are not required, but the crankcase is formed by the fan housing on the one hand and the housing of the starter device on the other Casing of the cylinder attached: is.

According to a further feature of the invention, at least one outlet opening for cooling air is provided in the area of the cylinder in the fan housing, the cylinder being located directly above the fan housing so that perfect cooling of the motor is ensured in a simple manner. In order to increase the effectiveness of this cooling, a time blade, preferably inclined upward in the air flow direction, is provided in the fan housing, which is preferably guided up to the outlet opening, so that a partial air flow is branched off from the fan air flow through this guide blade and fed to the cylinder will. The fan is expediently designed as a radial fan, the outlet opening being able to be arranged in an upper annular channel of the fan. Da4Lit the cylinder full =. is atöndig the cooling air flows around: the outlet opening - in plan view - is provided in the direction of rotation of the fan in front of the cylinder center axis. A further improvement of the engine cooling is obtained when the cylinder is at least partially surrounded by a preferably hood-shaped] ühlluftführung, WO-in at the cooling air guide practical an air outlet. opening, is preferably provided on the side of the cylinder facing away from the air inlet side, so that the cooling air is inevitably guided from one side of the cylinder to the other side and flows around the entire cylinder. The temperature of an exhaust muffler of the engine can be kept low in order to avoid burn injuries and to achieve a low level of heat in a simple manner by the fact that the air outlet opening of the air duct, which is preferably provided in a vertical plane, is at least partially directed towards this muffler, which is preferably immediately adjacent to it this Luftausschlag®-opening lies. The compact design of the spray device according to the invention can be further improved by the fact that the air puff pot has an outer curved wall which - in plan view - follows approximately the circumference of the fan housing. Berner, it is advantageous to this purpose when the angeflanwchte preferably directly on the cylinder carburetor between the motor and IAEI ckentragvorrichtung, pre preferably protected with a augeotdneten between it and the back support device air filter is seen. e Sprähen When the procedure is usually to DA8 the operator of the discharge channel geschulter- ten devices at an acute angle from Winkaa according keeps away the front, so that therefore halbseitlich overall sprayed or injected, or the like. is. Thus the lustragkanales in this normal position a straight possible guidance is ensured, this,, a preferably horizontal plane n lying obliquely outwards from the blower housing out, so that the forced air stream so guided substantially without any curvature from the Gebläselgehäuse and through the discharge channel can be - and there are extremely low power losses . This makes it possible for a blower to stay with a relatively small diameter and thus a low weight. In this case-the device can be designed so that the radial extension of the cylinder for 1Kotorwelle corresponds approximately to the radius of the fan housing and the compact construction is further enhanced the device. Zwdc7mäasig the main outlet opening of the blower housing, which is directly connected to the discharge duct, is directed obliquely outwards at an acute angle to the plane of the support plate , so that the air flow within the blower housing is essentially only guided in a straight line after leaving the blower wheel .

The design according to the invention also has the advantage that the container for the discharge means can be arranged lower than in known spray devices , the horizontal center plane of the container expediently being approximately at the level of the upper articulation points of the shoulder straps.

Thus, the inventive spray device may be placed safely when not in need, it has a Aufate11fu8 least one, preferably four in the exhaust of a rectangle lying mounting feet standing on one another at the corners. This Aufetellfüße can be characterized incorporated in Advantageous ter weep, that at least one Aufstellfu8, preferably two Äufstellfüße on the bottom eeite of the fan housing is provided, are preferably einstüokig formed therewith and at least one Aufstellfuü in the compact configuration of the spraying device, preferably two AufstellfüBe to the underside of the support plate are provided, are preferably formed in one piece with this . Bach has another pre-election dpm according to the arfinduag the notor fan on the beam support plate, preventive wise exclusively about the lastic elements solidifies, so that the vibrations of the engine fan not or only insignificantly on the back device to be transferred. It has to be Proven to be advantageous when two rubber-elastic Elements on the fan housing and a - in top- view between the former lying - rubber table element in the upper area of the motor, preferably wise are provided on the alternator housing, so that a vibration-damping three-position rank results. The elastic support of the emergency blUses has a relatively high stability if the lower, preferably in appropriate Protected recesses of the feet of the support plate and space-saving lying gmmmielastiochen elements with perpendicular axis direction and the upper rubber-elastic Element with .Ach®- direction are arranged. Maintenance work on the motor fan can be carried out in can be made in a simple manner, if g®tene the upper fastening part of the motor fan the backpack is easily detachable. Purely the back plate is indicated by a vorzugswei®® the rear-mounted Y®-arm section made of plastic or similar of substantially the same thickness over the whole Eretreokneg formed, According to Möeens the upper B®fenti The focal point of the motor fan is the back support plate thanks to the blasticity of the fastening elements made of rubber can be swiveled to the front and the emergency This means that the blower is easily accessible from all sides. An advantageous further development of the subject matter of the invention standes, which also applies to sprayers other than the described type can be made in that the shoulder straps of the carrying device in its upper area directly on the container are attached. This provides a secure support of the container for the discharge means gwä.'n: eiet, which, when filled, has the hardest part of the Device represents. As the back support devices or. whose Fäckentraalza> tte not directly through the weight of the container can be the Back carrying device is light in weight forms are. The upper fastening links are useful the shoulder straps for securing the containers with connected to the ELi, back carrying device, no da # this by the same fasteners as the Container is connected to the shoulder straps. To the secure storage of the shoulder straps for simple Construction is the upper shoulder strap and swiaoheu the container and the back support plate to the cross are arranged on this lying Befestigungegliedera, preferably clamped, wherein the shoulder straps are suitably guided by the top läefeetigungeetellen upwards and deflected at the upper edge of the back support plate, is so that the upper attachment ends of the shoulder Garte excluded only to a tensile load.

Nuts embedded in the wall of the container for the fastening members formed by screw bolts can be attached to the container in a simple manner if this consists of two shells with an approximately perpendicular parting plane .

Another advantageous development of the Erfindungsgegenotandea that can be made even in sprayers other than the described manner, there is; in that a fuel tank is arranged above the engine. In this way, the fuel tank can be protected and space-saving with a favorable center of gravity angeördnut # willu._Zweckmäaeig, the fuel tank is located between the Äötar and the container. It is particularly advantageous if the fuel tank and the container form a structural unit with one another so that special fastening means for fastening the fuel tank to the backpack are not required and the weight of the backpack is not loaded by the fuel tank. The fuel tank can be attached to the container via an easily detachable connection, preferably a plug connection, so that it can be removed in a simple manner, for example for filling, cleaning or the like. The fuel tank is temporarily suspended from the container.

The plug-in connection can be established in a simple manner in that the lower wall of the container, preferably in the middle, is formed into a rastanaatz, to which a corresponding latching opening is assigned in the upper wall of the fuel tank, the fuel tank expediently holding the container at least partially engages around on at least one side, preferably on the rear side, so that a rotation of the fuel tank with respect to the container is avoided in a simple manner.

Thus, the upper fixing members ®ind exposed for attachment of the seat support plate to the container at most only a slight bending stress, are (is) of the container and / or the fuel tank to the engine fan, overlying - supported preferably centered. In this case, the fuel tank expediently has a molded centering opening in its lower wall which partially engages around the housing of the starting device. This ensures that the container is supported securely, especially when it is full, so that, for example, fluid fluctuations in the container during transport of the device or during filling cannot affect the back support plate. Since the container or the fuel tank is centered with respect to the motor fan, twisting of the backpack device or the backpack plate by pivoting the container is avoided.

In order to be able to start the sprayer or the motor comfortably, the movement of the arm required for this must be possible in such a way that the arm is stretched horizontally forward out of the shoulder, because then the optimal force can be exerted on the pulling rope. To make this possible, it is necessary that the pull rope of the anwerivorrichtung is guided directly below the shoulder, that is to say in the area of the armpit of the operator, and that the extension movement of the Anne can take place at a height. Therefore, a further development of the subject matter of the invention, which can also be carried out with devices other than the type described, is that the pull rope of the starter device is guided laterally on the backpack device above the discharge channel and below the upper belt deflection points, preferably about armpit height .

In order to have a sufficient starting path to start the engine when the operator's arm is stretched forward, taking into account the above conditions, and to ensure that the handle is in a reasonable starting position for easy gripping when the device is shouldered, the edge grip is at the end of the pulling rope -in rest position to the front and preferably obliquely downwards geriehtel ', @ then the edge Have CHSS in rest position relatively far to the rear, for example, below the axillary hollow of the operator and is thus a great Startweg is ensured with ease of use.

To the Randhabe in their initial BSW. To be able to keep the rest position in a simple manner, the handle rests in the rest position under the force of a return spring acting on the pull cable with its rear end face against an alignment surface surrounding a guide recess of the cable. Zweclomännig is, vorzugn-, on the side of the discharge channel, that is, below the right arm of the operator, a projecting, the 2ührungsausnehmung and the aligning surface having strut disposed at the Rückentragvorriohtung laterally whose bathing a has downwardly directed bend, so that the under the force of the return spring on the cranked part with its rear end face lying perpendicular to the axial direction of the rope is directed obliquely downward in this rest position and is therefore easy to grasp. . ' The guide recess is conveniently located approximately in the plane of the pulley of the starter device, so that the rope runs without special U> -7l.eukaag and thereby the full tensile force acting on the handle when actuated is transmitted to the rope and thus to the starter device.

The arrangement according to the invention provides that the device according to the invention or its motor can be started with the device in the shouldered state without particular difficulties, the device being held securely on the operator's shoulder by the backpack device. For this reason, the device can also be switched off for short breaks .

Another embodiment of the subject matter of the invention, which can also be used advantageously for devices other than the type described, consists in that the discharge duct or the fan housing is connected to the container via two newspapers and that between the adjacent openings of the lines in the fan housing and / or A movable throttle valve is arranged on the discharge channel, which throttle valve can be moved into a closed position at at least one outlet and into the air flow in the fan housing or in the discharge channel. The container for the discharge means is pressurized through one line, so that the discharge means is conveyed into the discharge channel via the other line in an amount corresponding to this pressure. By moving the throttle valve, a newspaper can be closed completely, whereby when the throttle valve is opened a corresponding, stepless reduction of the passage cross-section of the discharge channel is possible, so that the amount of discharge agent to be discharged can easily be regulated. times a further feature of the invention, the mouths are provided in a known manner on the top of a connection nozzle of the fan housing for the Auatragkanal meanwhile longitudinally one behind the other, the throttle valve in the nozzle between the mouths is pivotably mounted about a horizontal axis perpendicular to the Stutmn, so that there is an arrangement that is simple in structure.

In order to avoid a complete closure of the discharge channel or the connection piece, the throttle valve is selected to be smaller than the clear cross section of the connection piece. In a preferred embodiment of the subject matter of the invention, the throttle cap is in its closed position m1 of the rear opening of the discharge nozzle in the direction of flow. If the throttle or regulating flap is in its closed position, no dust or the like can get into the connection piece or into the discharge channel from the container via the line at the rear in the flow direction; The cross-section of the connection piece or the discharge channel is also completely open, since the control flap lies in the plane of its upper wall, so that the blower air can flow unhindered through the discharge channel and not or only to a small extent through the line at the front in the direction of flow enters the container. If the control flap is opened, then on the one hand the opening of the rear line in the direction of flow assigned to the delivery channel is opened accordingly, while on the other hand the cross section between the two openings is reduced by the control flap moving into the cross section of the connecting piece, DAB as a part of the forced air stream is guided into the front in the direction of flow conduit into the tank and builds up there, a corresponding pressure. As a result, the regulating flap has a double function in that when the regulating flap is opened, a larger amount of air is diverted into the container, corresponding to the enlargement of the inlet crosszzka @ -t * KB, for the discharge medium in the discharge channel and thus the partial air flow of the amount of discharge medium guided into the container is adjusted, which arrives in the discharge channel. -If the device according to the invention is used for spraying, i.e. for dispensing a liquid, the rear valve in the direction of flow of the air is completely closed with the control flap, so that the full blower line is available for the spraying process.

The regulating flap can be operated in a simple manner if it is connected, preferably via a Bowden cable, to a handle provided at the front end of the discharge channel®.

Bine other further development of the object of discovery, the same with one of the described device different device can be applied that in the spray head of the Äustragkanales one with Nozzle connected to the tank with infinitely variable adjustment adjustable passage cross section is provided. There- the amount of spray dispensed can be very precise Be set. It is particularly advantageous because-- if in front of the nozzle outlet opening in the inlet a control valve with a handle-operated is arranged. A simple and stepless spray agent application it is achieved that the control valve has a housing has rotatably mounted curve in which Movement area an inlet opening of the feed line is provided in the housing. Purpose m ässig if the curve is provided as a front curve on an HKlse see, at the end of which protrudes from the housing Handle is arranged so-that-by rotation around 3600 the entire control range over the valve is deleted . -Zweckmäs®lS, the handle is on the Top of the discharge duct. `` @ ----, _- To simplify the structure, the valve Single-storey housing with part of the discharge channel® educated. The embodiment according to the invention described last also has the advantage that a blockage of the cross section of the supply of the spray can easily be eliminated by opening the valve so that the larger amount of spray flushes the spray.

An advantageous development, which also applies to devices other than the type described can be made 'is that with the control valve connected handle with one arranged in the feed line for the spray agent Valve is connected. This allows both spraying and dusting regulate the discharge rate with one and the same handle.

This can be achieved in a simple manner enough that the pivot axis of the handle carries a stem plug of the valve, which is preferably formed in one piece with this. It is useful. the arrangement made such that the control flap is in the closed position when the valve is open and transversely to the flow direction of the blower air flow when the valve is closed so that the operator can perform the same control movements with the handle when dusting or spraying. Advantageously, at the front end of the lustragkanales a preferably inclined upward. The front handle is provided, on which the handle for the bolt flap and / or a handle for the carburetor of the engine is mounted, so that all control operations of the sprayer can be carried out with the operator's hand holding the handle.

The 3'finding is explained in more detail below with reference to the example shown in the drawings. 1 shows a sprayer according to the invention in a view from behind, partially in section. FIG. 2 The sprayer according to FIG. 1 also in a rear view, but partially in vertical section, FIG Fig. ¢ the sprayer in horizontal section through the engine cylinder, 5 shows the front end of the discharge channel partially in view, with the front, part shown in the axial section 900 twisted in relation to the rear part "is shown " Fig. 6 is a section essentially according to the Line VT - VI in FIG. 5. like FIGS. 1 to q. show, an inventive according to the device with a backpack device 1 a back plate 2, on the back in the upper area there is a container 3 for the .bearing funds is provided. Below the loading holder 3 there is a fuel tank 4, half of this, in turn, a single-cylinder two-stroke engine 5 is provided, below the motor 5 is a radial Fan 6 is arranged, which drives with the Mohr 5 is bound. The back support plate 2 is snt- speaking of the curvature of the back and spine of a People concave gel and formed by a Kunet®toff board with essentially over the entire extension & thickness is formed, which is provided on its back with approximately perpendicular and horizontally extending ribs 7 to 10. The container 3, which can rest on this rib 8, is arranged above an uppermost, horizontally extending stiffening rib 8. The container 3 is provided at its front wall 11 below the upper edge 12 of the support plate 2 with two horizontally adjacent hexagon nuts 13 that Bind embedded in it without breaking through the wall 11, the wall 11 also ille in the area of nuts 13 same thickness as in the remaining area. The pocket-shaped receptacles in the wall 11 of the container 3 for the nuts 13 are each provided with an inwardly protruding ring shoulder 14 which engages in a corresponding circumferential groove 15 on the associated nut 13, so that it is positively held on the wall 11 in its axial direction . Screws 16 are screwed in as fastening members, the heads 17 of which are attached to the two horizontally adjacent nuts 13, which are arranged symmetrically to the vertical center plane running perpendicular to the back support plate.2. are sunk to the front of the seat support plate 2 in corresponding recesses 18 such that they do not have the intended to rest on the front surface of the operator Büeken 19 the back support plate 2 protrude. Between the back support plate 2 and the horizontally adjacent nuts 13, the upper ends 20 of two shoulder straps 21 of the back support device 1 are arranged, which have corresponding openings for the fastening screws 16 penetrating through the back support plate 2. The belt ends 20 are clamped between the back plate 2 and the nuts 13 by the screws 16 and are guided almost vertically upwards from the fastening point below the upper edge 12 of the back plate 2, so that the shoulder straps 21 are attached to the upper edge 12 of the back plate when the sprayer is shouldered 2 are deflected forwards and thus acts on the fastening screw 16 through the belt ends 20 by a load that is essentially perpendicular to the axial direction of the fastening screws 16. The belt ends 20 are fastened directly to the container 3 by the arrangement described, so that its weight is held directly by the belts 21. At the same time, the fastening screws 16 are used to fasten the back plate 2 to the container 3. To further support the back plate 2 on the container 3, between the horizontally adjacent nuts 13 underneath them there is another nut 23 in the wall 11 in a manner corresponding to the nuts 13 embedded, with this nut 23 having a screw 24 arranged in a manner corresponding to the screws 16 intervenes. The container 3 lies with the lower one Part of its front wall 11. flat on the one above the horizontal rib 8 located part of the back support plate 2, so that a firm connection is guaranteed. The container 3 loads is made of a blown plastic part with solder on the right, approximately parallel to the back support plate 2 of division level 2? des-Werlmuges, whereby the Nuts 13 on the rear surface in the direction of travel of the tool, causing indentations of the tool can be avoided. The location of the holder 3 is chosen that its horizontal Central plane approximately at the level of the upper edge 12 of the back support plate 2, that is relative. As FIGS. 1 to 3 also show,. stofftar ¢ directly on the underside of the Container 3 arranged, the upper landing 28 of the fuel tank 4 on the lower wall 29 of the container 3 rests and the front wall 30 of the Fuel-rich 4 between the roughly perpendicular ongoing: ribs 7 below the upper horizontal Rib 8 is provided. In the middle of the lower Wall 29 of the B®halter 3 is a downwardly protruding circular R, staneatz 32 with a tone in the back In the upper wall 28 of the fuel tank 4, a corresponding latching recess 31 formed therefrom is assigned, so that the fuel tank 4 is suspended from the Be-t colder 3 via a latching plug-in connection. The container 3 and the fuel tank 4 are preferably made of the same plastic, in such a way that the locking lug 32 and / or the locking recess 31 are elastic and the locking connection can easily be used to remove the fuel tank 4. In the rear area, the upper wall 28 of the fuel tanker 4 is drawn upwards in accordance with the rear lower, horizontally extending, curved edge of the container 3, so that the fuel tank 4 partially surrounds the container 3 in this area, or rests against the container 3 and a rotational movement of the fuel tanker 4 relative to the container 3 about the axis of the centering attachment 31 is avoided. On the projecting over the rear of the container part 3 to the fuel tanker 4 a closable with a ceiling 34 tank opening is provided at the top. As shown in FIGS. 2 and 4 in particular, the air-cooled motor 5 has a horizontally lying Zarlinder 35 , the axis of which runs approximately parallel to the plane of the backpack 2 and which is directed from the crankshaft 36 to the left. Above the crankcase 37 of the crankshaft 36, which is arranged with a vertical axis, there is an ignition system 38 for generating the ignition current for the easily accessible spark plug 39 on the cylinder face, the ignition system being directly drive-connected coaxially to the crankshaft 36. Above the alternator 38 there is a starting device for the engine 5, which is on the same axis as the crankshaft 36 and has a pulley 41 arranged in the axis of the crankshaft 36, which is connected to the crankshaft via an automatically operating, below it located fzpeilaufkupplung 43 36 can be brought into drive connection. Above the pulley 41 is coaxial. to this a return spring 44 designed as a spiral spring is arranged. the lower section 45 of the housing 46, which surrounds the ignition system 38 and part of the starter device 40 and is essentially coaxial with the crankshaft 36, is provided as the upper part of the crankcase 37, to which the cylinder 35, which is designed as a separate part, is fastened directly, for example with screws . The upper part 47 of the housing 46 is designed as a substantially circular, detachable cover on which the pulley 4 # 1 and the return arms 44 are mounted. The fuel tank 4 located directly above the starting device 40 has in its lower wall 48 a concavely curved recess 49 formed therefrom, the clear diameter of which essentially corresponds to the diameter of the cover 47 and in which this cover 47 is located. If the container 4 is filled or is loaded downwards by other binding, the wall of the recess 49 rests against the top of the cover 47 so that the container 3 and the fuel tank 4 are supported in the center of the engine Crankcase 37 is formed directly by the upper portion 50 of the upper part 51 of the fan housing 52. The blower housing 52 is thus directly connected to motor 5 or flanged to it. The fan wheel 53 located in the housing 52 is arranged directly on the lower end of the crankshaft 36.

As FIGS. 1, 2 and 4 show, the cylinder 35 has a radial extent to the crankshaft 36 which corresponds approximately to the radius of the fan housing 52, the cylinder 35 being located directly above the fan housing 52. The fan housing 52 has an outer ring channel 55, formed by the upper housing part 51 and the lower housing part 54 , with a substantially rectangular cross-section, the cross-section of which increases in the direction of rotation arrow 56 of the fan wheel 53 and that on the right-hand side of the sprayer, So on the side of the pump shaft 36 facing away from the cylinder 35 opens into a connection piece 57 of the fan housing 52 which, like the main outlet opening 58 of the fan 6 provided at its end, is directed outwards at an angle to the level of the back support plate 2, the connection piece 57 in the horizontal Level of the fan wheel 53- is located. The part that is radially outer to the crankshaft 36. of the cylinder 35 provided with cooling fins 59 lies directly above the corresponding section of the annular channel: it 55 of the divided in a horizontal plane Fan housing 52, wherein, according to FIG. 4, .in rotary Direction: arrow 56 in front of the central axis of the cylinder 35 in the upper wall of the annular channel 55 a right angular opening 60 is provided. Below this Opening 6® is located in one piece with the upper, Housing part 51 formed Leitochaufcä- 61v which in Ge direction of rotation of the fan 2feil 5 sch ^ ä..g .n above; uni to in, the opening 6C led so there part deo iL the annular channel 55 flowing. Muftetromesuw @ h the Iit- aV # laurw @ I 6 1 a b ezweig 18 g upwards no dem a gan c-, 1- 5-, 53 out and the cylinder 35 to 'Ühlang zue: Mllizt he cylinder 35 f of an nnL r Ittelr.1a r attached to him, for example with a screw 62 easily detachable. Surrounding cooling air hood 63, the walls of which lie in the immediate area of the cooling ribs of the cylinder 35 and which is open both towards the axis of the crankshaft 36 and towards the fan housing 52, ie essentially has only four walls lying approximately perpendicular to one another.

In the wall 64 facing the rear of the sprayer, which is on the side of the cooling air hood 63 facing away from the opening 60, an opening 65 is provided in a vertical plane for the cooling air flowing through the cooling air hood 63 to exit. The cooling air is thus introduced through the opening 60 into the cooling air hood 63 and must then inevitably cross the cooling air hood 63 completely, ie flow around the entire circumference of the cylinder, after which it is led out of the opening 65 of the hood 63 into the open. An exhaust muffler 66 is flanged directly to the rear of the cylinder 35, whereby the rear wall 64 of the cooling air hood 63 can be clamped between the cylinder 35 and the exhaust pot 66. The muffler 66 has a rear recessed turn 67 that : in plan view according to Fis. 4 something: the extent 68 den Fan housing 329 shape or in a vertical project sound slightly iunsrh & lb of the obiaegehäusee 32 lies. A, f that of the pefeatigungs- b6 <. Äneohluaetelle From the muffler 66 on the opposite side of the cylinder 35, the muffler 66 is fastened directly to the top of the fan housing @ 52 via a bracket 69 with a screw 70. The outlet opening of the muffler 66 for the combustion gases provided on a connector 79 is directed approximately perpendicular to the back support plate 2 to the rear. The front wall 72 of the muffler 66, which is approximately parallel to the back support plate 2, protrudes on the side of the cylinder 35 in front of part of the outlet opening 65 of the gühllufthaube 63, the rear wall 72 lying approximately in the plane of the opening 65, so that the muffler 66 is also cooled by the cooling air emerging from the hood 63. On the side of the cylinder 35 opposite the muffler 66, i.e. between it and the back support plate 2, a carburetor 73 is flanged directly to the cylinder 35 in a vertical arrangement, the float housing 74 of the carburetor 73 for easy actuation before starting the engine 5 for ' The scope of the 4ebläsegehäuses 52 is easily accessible. On the side of the gasifier 73 facing away from the cylinder 35, namely on its intake side, an air filter 76 arranged in a housing 75 is provided, the housing 75 extending approximately parallel to the back support plate 2 over almost its entire width. The motor fan unit described above, which is a self-contained structural unit, is fastened at three points via rubber-elastic bearings 77, 78 to the back support plate 2 in its lower area. For this purpose, the fan housing 52 has two approximately radially on its lower housing part 54 arms 79 projecting towards the axis of the getTEi.saxe and lying at an obtuse angle to one another, which are arranged symmetrically to the "vertical center plane of the spray device which is somewhat perpendicular to the back support plate 2". The baths of the arms 79, which are designed in one piece with the lower housing part 54, each rest on a rubber-elastic bearing element 78. Each rubber-elastic bearing element 78 is formed by a rubber-elastic, preferably cylindrical, intermediate member 80, on the two opposite end faces of which a mounting plate 81 is fastened, for example by vulcanization. Each mounting plate 81 is provided with a threaded opening located coaxially to the intermediate member 80. The ends of the arms 79 of the motor fan unit rest on the upper mounting plates 81 of the two rubber-elastic bearing elements 84 78, the arms 79 being fastened to the rubber-elastic bearing element 78 with screws 82. On their undersides, the rubber-elastic bearing elements 78 are fastened to the back support plate 2 with screws 83. The back support plate 2 has at its lower end on the back two rearwardly protruding Aufstelliücke 84, which are symmetrically to the perpendicular to the back support plate 2, perpendicular central plane of the sprayer immediately adjacent to the respective side edges of the back support plate 2 and> rush through two approximately perpendicular to Back support plate lying, vertically spaced ribs 85 are supported. The respective rubber-elastic bearing element 78 lies between these ribs 85, each rubber-elastic bearing element 78 being supported on a horizontal transverse web 86 which connects the ribs 85 and which is penetrated by the corresponding fastening screw 83. As described, the lower rubber-elastic bearing elements 78 are arranged with a vertical axial direction, since the fastening screws 82, 83 are provided vertically. Above the lower rubber-elastic bearing elements 78, the further rubber-elastic bearing element 77 is provided between them, i.e. approximately in the vertical center plane of the sprayer that is perpendicular to the back-support plate 2; is arranged perpendicular axis direction. The rubber elastic bearing element 77 is fastened to the skirt support plate 2 with a releasable screw 87 which is sunk in the back support plate 2 with its head. The end of the rubber-elastic bearing element 77 facing away from the back-support plate 2 is also fastened in a manner not shown in detail with a screw to a shoulder 88 of the housing 46 that accommodates the alternator 38 and the overrunning clutch 43, which is directed towards the back-support plate 2. As a result of the described training, the notor fan unit is attached exclusively to three points provided at the tips of an isosceles triangle standing in a vertical plane on the back support plate 2 in its lower area, the connection between the motor fan unit and the back support plate 2 being formed exclusively by elastic members 80 .

The lower housing part 54 of the blower housing 52 has two preferably cast-on, so one-piece with the housing part 54 formed mounting feet 89 on the rear of the sprayer, which have about the same .Abstand as the mounting feet 84 of the back support plate 2 from each other and facing away from this Side of the crankshaft axis so that the sprayer has a secure footing, for example when it is placed on the ground, thanks to the four support feet 84, 89. The Aufst®llfüas9 89 protrude over the circumference 68 of the fan housing 52. As FIGS. 1 and 2 also show, the pull rope 90 of the starter device 40 wound on the rope pulley 41 is one of its diameter towards the outside through a corresponding opening in the cover 47 directly below the fuel tank 4, which has a corresponding groove 91 on its underside Corresponding guide opening 92 guided, which is located on a strut 93 attached to the rear of the back support plate 2. The strut 93 protruding on the right side of the sprayer over the corresponding side edge of the back support plate 2, i.e. above the connecting piece 57 of the fan housing 2, is bent downwards at its end 99 in such a way that the front surface 95 of this strut end 94 is directed obliquely downwards is.

A handle 96 is elastically attached to the end of the tension cable 90 lying on the front side of the strut 93, for example by means of a tension spring 97 arranged in it. The pull rope 90 is under spring force by the return spring 44 acting on the rope pulley 41, so that in the starting position it rests with the rear face 98 of its shaft 99 on the front surface 95 of the bent end 94 of the strut 93 and thereby assumes a predetermined position relative to the back support plate 2. This position is chosen so that the handle 96 is directed obliquely outward and inclined downward forwards, the handle 96 being under the operator's right armpit when the sprayer is shouldered and can therefore be easily gripped. The pull rope 90 runs from the rope pulley 41 to the guide recess 92 in an approximately horizontal plane. To start the motor 5, the handle 96 is gripped by the operator with the right hand and pulled obliquely outwards by stretching the right arm so that the pulling cable 90 running from the cover 47 through the guide opening 92 to the handle 96 is in the process runs essentially in a straight line and thus no power losses occur due to deflections of the rope 90.

As FIGS. 1 to 4 also show, on the upper horizontal wall 100 of the connection stub 57 of the fan housing 52 in the direction of flow (for 101 two openings 103 one behind the other are provided in the vertical center axis of the connection stub 57 102, 103 have equal diameters and each having a smaller diameter than the Breitejdes Anschlußatutzens 57. between have-both Mndungen 102, 103 is a control valve 1 06 perpendicular to a direction of flow arrow 101 and parallel to the wall 100, so horizontal axis 107 pivoted, 2 and 3, in its one position according to FIGS Control flap 106 down, for example in a position according to ss zig. 1, in which the mouth 103 is at least partially opened and the control flap 106 is transverse to the air flow flowing in the connection piece 57 and thereby throttles it. This throttling effect of the control flap 106 is increased as the opening 103 closes, with the blower air flow acting against the control flap 106 being partially deflected and this partial air flow being guided into the opening 102. The two ends 1029 103 of the connecting piece 57 are in the lower wall 29 of the container 3 two corresponding nozzles 10S® 109 assigned with one mouth of the container 3 gtw & on the same axis as an end of the connection socket 57 lies. The mouths 1®8. 109 are through after at the bottom over the container 3 protruding pipe sockets 111, 112 one in the lower container wall 29 arranged insert part 110 formed with a tightening strap 113 on a corresponding, ring- flange-shaped part 1'i4 of the lower Container wall 29 is attached. To apply a stick with the B according to the invention, the manikin protection device in Direction of flow arrow 101, rear roar neck 105 of the connection piece 57 according to I`ig. 1 over a flexible or elastic piece of pipe 115 with one, preferably the approximately coaxially to it liegen- the pipe socket 112 of the container 3 connected, wherein the Ro'imetück 115 on the pipe sockets 105, 112 lightly is releasably attached. The one in the direction of flow Arrow 101 front pipe socket 104 of the blower outlet socket 57 is made by a corresponding piece of pipe 11: 6 with the other pipe extension 111 of the container 1 connected, with an in The blow channel 117 lying on the container 3 is closed is, which has a pipe socket 1'I8 on its underside has for insertion into the pipe socket 111. Of the Blow channel 117, which extends almost over the entire Width of the container 3 extends is at its Underside with a% ängaeohlitz and on his, free end with another exit opening 120 Mistake. The motor 5 will now start, so that a blower air flow is generated by the fan 6. By opening the regulating flap 106, for example according to FIG. 1, dust flows from the container 3 via the pipe section 115 into the gehl connecting piece 57, ch; s then carried along by the air stream flowing through it and via one in FIGS. 1 to 4 discharge channel not shown is dusted. At the same time, a partial air flow corresponding to the position of the control flap 106 is passed through the pipe section 116 into the blow channel 1 ° i7, so that the dust at the bottom of the container 3 is loosened by the blown air emerging from the slots 119, 120 and easily into the pipe section 11.5 reached. If the control flap 106 is opened even further, the inlet cross-section for the dust in the connecting piece 57 increases and the partial air flow, which is introduced into the container 3 via the pipe section 116, is adapted to this increased discharge volume.

The pivot axis 107 is guided outward on the side of the pipe sockets 104, 105 facing the fan center axis and is provided with a lever-like bend 121, on the end of which the eyelet 122 is releasably attached to the movable pulling element 123 of a Bowden cable 124. A return spring in the form of a helical torsion spring 125 is also arranged on the axis 107, by means of which the control flap 106 is spring-loaded towards its position closing the opening 103. One end 120 of the spring 125 supported on the connecting piece 57 runs. directly above a receiving groove provided in a shoulder 127 of the connection socket 57 for the one bath of the sheath of the Bowden cable 124, so that this sheath is held in place by the spring 125.

A discharge channel 129 having a flexible hose 128 according to FIGS. At the front end of the flexible hose 128 is an inclined. Handle 130 protruding upwards and forwards is fastened with a tensioning strap 131 with which a tube 132 of the discharge channel 129 inserted into the front end of the hose 128 is held in place. On the inside, that is, on the side of the handle that faces the center plane of the plant protection device which is approximately perpendicular to the back support plate 2, two levers 133, 134 are at the lower end of the handle 130 around a common, horizontal, perpendicular to the axis of the tube 132 Axis 135 pivoted. The levers 133, 134 are directed approximately vertically upwards in their elcen end positions and can be pivoted backwards from this position. The lever 133, which is further away from the handle 130, is positively connected in the direction of rotation to the pivot shaft 135 via a hub 136, one end of the pulling element 123 of the Bowed cable 124 connected to the control flap 106 being articulated on the hub 136. By pivoting the lever 133 with the thumb of the hand holding the handle 130, the control flap 116 can thus be adjusted while the plant protection device is in operation. Between the lever 133 and the handle 130, the lever 134 with its hub 137 is mounted pivotably on the pivot axis 135, with one end of the pulling element 138 of a Bowed cable 139 being articulated to this hub 137 in a manner not shown in detail, which according to FIG 4 is guided between the back support plate and the crankcase 37 to the carburetor 73. By actuating the lever 134, the carburetor 73 and thus the speed of the motor 5 can be regulated: A spring-loaded locking ball 140 is mounted in the handle 130 , to which a corresponding locking opening is assigned in the face of the hub 137 and through the at least one position of the lever 134, preferably the position corresponding to the starting position of the carburetor 73 can be adjusted in a simple manner . The two levers 133, 134 , viewed in the axial direction of the discharge channel 129 according to FIG. 6, protrude from the handle 130 at an acute angle.

On the pivot shaft 135 fixedly connected to the lever 133, a conical cock plug 141 with a diametrical through opening 142 is provided within the handle 130, the cock plug 141 tapering conically towards the hub 136 of the lever 133. The Haha chicks 141 is rotatably mounted in a sunken in the existing example, plastic handle 130 valve sleeve 143 having a corresponding conical inner surface. Between the hubs 1369 137 of the levers 133, 134 a plate spring 144 is arranged secured against rotation , by means of which the hub 136 fastened to the swivel shaft 135 with an end cap 1q: 5 screwed onto the swivel shaft 135 is spring-loaded away from the handle 130 in such a way that that the near plug 141 is pulled into the conical recess of the valve sleeve 143 .

At the front end of the tubes 132, a tubular union essential Redu ieretiLoh $ 146 is fixed having at its top a ein®tückig with eihm formed valve housing 1_47. In a cylindrical recess 148 of the valve housing 147 which is inclined at an acute angle to the axis of the tube 132 , a sleeve 149 is rotatably mounted, which on its upper side of the valve housing. 147 has a star-shaped slope 150 from this protruding end. The end face 151 of the sleeve 149 lying in the cylindrical recess 148 is designed as a helical curve, in the area of movement of which in the valve housing 147 the opening 152 of a tube extension 153 axially parallel to the tube 132 and directed backwards lies. With the disseminated by a projecting annular collar in the valve housing 147 and held by positive fit in the axial direction Nilse 149 of the free cross-section of the estuary can be regulated continuously between full opening and full closing 152nd On the underside , a nozzle tube 154 opens into the cylindrical recess 148 as the valve housing 147, which is directed obliquely forward to the central axis of the feed channel 129 in accordance with the inclination of the sleeve 149 and has a nozzle opening 155 in this central axis. On the front end of the reducer 146, a mixing head 156 easily fitted detachably bar. will. For spraying with the plant protection device according to the invention, ie for dispensing a liquid discharge agent, the pipe extension 104 at the front in the direction of flow arrow 101, as shown in FIG. A reducing sleeve 158 is inserted into the pipe socket 111 from above, ie through the upper container opening which can be closed by a cover 157, to which a hose 159 located in the container 3 is connected, which extends from the reducing sleeve 158 upwards into the uppermost area of the Container 3, ie guided into the cover 157 and there attached to a sieve insert 160 which is detachably arranged in the opening.

A reducing sleeve 161 is also inserted from above into the other pipe socket 112 of the container 3, and a feed hose 162 is attached to the lower section of smaller diameter protruding from the pipe socket 112 by pushing it on. The feed hose 162 is guided along the discharge channel 129 to the handle 130 according to FIG. 5 and placed on a pipe socket of this handle, not shown in detail, this pipe socket being connected to an opening in the valve sleeve 143, which is in the path of movement of the passage opening 142 of the straw plug 141 lies. On the side of the handle 130 facing away from the feed hose 162, an intermediate line 163 is connected to the latter, which is plugged onto a corresponding pipe attachment of the handle 130, which is line-connected to the outlet side of the valve 141 to 143. The intermediate line 163 m is plugged with its front end onto the pipe socket 153 of the valve housing 147. When the fan is in operation and, if necessary, with the control flap 106 closed, a partial air flow is passed through the pipe section 116 into the container 3, so that a static pressure is built up in it. The spray in the container 3 is passed through the hose 162 from the container 3 into the nozzle tube 154, where it exits the nozzle opening 155 into the mixing head 156 and is entrained and sprayed by the main blower air stream flowing into the discharge channel 129. By turning the lever 133 and thus by turning the rail plug 141, the amount of spray agent that is fed to the nozzle tube 154 can be continuously varied. A fine adjustment of this amount of spray agent can be made by rotating the sleeve 149 with the aid of the handle 150. During the spraying, the axis 122 can be removed from the lever-like crank 121 of the pivot axis 107 of the regulating flap 106 , so that the regulating flap 106 is permanently held in its closed position in the mouth 103 by the spring 125.

Claims (1)

P atentaneprüche 1.) Backpack plant protection device with optional discharge of spray, dust, mist, spray or granulate with a container arranged above a drive motor and a fan connected to it for receiving the discharge agent and with a container attached to the A fan provided with an approximately vertical axis and a delivery channel connected to the container and a back support device having, for example, a back support plate with straps, characterized in that the fan (6) is arranged below the motor (5). 2.) Germ according to claim 1, characterized in that the oppositely disposed cylinders (35) with its axis about the .liegt designed as a combustion, preferably two-stroke engine (5) parallel to the Antriebemotora Eben® the bending support plate (2). 3. ) Device according to Anapruoh 1 or 2, characterized in that the cylinder ( 35 ) drives the motor on which the discharge channel (129) is turned side of the notor shaft axis. 4.) Device according to one of the preceding claims, characterized in that the crankcase (37) of the motor (5) directly to the fan housing (52) is connected, preferably to Half formed by da® fan housing (52) is. 5.) Device according to one of the preceding claims, characterized by de.B above the engine (5), preferably between this and the loading container (3) a starter device, (40) see is. 6.) Device according to claim 5, characterized in that that the, one via a coupling, like a self- actively acting freewheel clutch ( 43 ) with the motor have shaft (3f) connectable pulley (41) - de Anierfvorrichtung on the same axis as the motor shaft lies". 7.) Device according to claim 5 or 6, characterized in that that the housing (46) of the starting device (40) or the like. With the upper part of the crankcase (37) is connected to the motor (5). 8.) Device according to one of the preceding claims, characterized in that the cylinder (35) designed as a separate component is connected directly to the fan housing on the one hand and the housing of the ignition device .ist. 9.) Device according to one of the preceding claims, characterized in that at least one outlet opening (60) for cooling air is provided in the area of the cylinder (35) in the fan housing (52) and that the cylinder (35) is immediately above the fan housing ( 52) lies. 10.) - Device according to claim 9, characterized in that a time blade (61) which is preferably inclined upward in the air flow direction (arrow 56) is provided in the fan housing (52) and is directed towards the outlet opening (60), preferably into it led .is. 11.) Device according to claim 9 or 1 0, characterized in that the fan (6) is designed as a radial fan and preferably the outlet opening (60) is arranged in an upper annular channel (55) of the fan housing (52). 12.) Device according to one of the preceding claims characterized in that the outlet opening tion (60) - in plan view - in fan rotation align (arrow 56) in front of the central axis. preferably with cooling fins (59) see cylinder (35) is provided. 13.) Device according to one of the preceding claims, characterized in that the cylinder (35) at least partially with one preferably Surrounding hood-shaped Gühlluftführung (63) is. 14.) Device according to claim 13, characterized in that that there is a supply outlet on the cooling air duct (63) inlet opening Q65), preferably on the one of the air inlet side of the cylinder (35) facing away from the entry side is provided. 15.) Device according to claim 14, characterized in that that the preferably in a perpendicular plane provided air outlet opening (b5) of the air guide (63) little deno partly on one puff pot (66) of the motor (5) is directed, access immediately adjacent to the exhaust pot lays 16.) Device according to claim 15, characterized draws that the muffler - (66) a has outer, curved wall (67), which - in plan view - approximately the circumference (68) of the fan housing (52) follows. 1'j,) device according to one of the preceding claims, characterized in that the preferably flange directly on the cylinder (35) throttle (73) between engine (5) and back Tragvorriehtung (1), preferably with one between him and the load carrying device (1) arranged air filter (76) is provided. 18.) device close to the previous speeches, characterized in that the discharge channel (129) in a preferably horizontal Lying on the level diagonally outwards from the bläeegehäüae (52) is performed. 19.) Device according to claim 18, characterized in that. that the directly connected to the discharge canal (129 connected main outlet opening (58) bläeekgehäuses (52) at an acute angle towards the level of the Rüok®ntragplatte ( 2 ) at an angle aneeen is addressed to: 20.) Device according to one of the preceding claims, characterized in that the radial extension of the cylinder (35) to the motor shaft (36 ) corresponds approximately to the radius of the fan housing (52). 21) Device as claimed in any one of the preceding claims, that the horizontal -Mittelebenecas container (3) approximately at the level of - ümlenkstellen top (12) of the shoulder straps (21). 22) An apparatus according to-one of the preceding claims, characterized in that the device mindestesn a Autstellfuss, preferably four in an interval from one another at the corners of a rectangle lying Aufstellftisse (84, comprising 89). 23) Device according to claim 22, characterized in that at least one Aufstellf @ a®s provided preferably two -AufatellfUase (89) on the underside of the blower housing (52) are preferably einstickig therewith. 24) Device according to claim 22 or 23, marked thereby characterized, that at least one Auf®tellfuss, preferably two Aufstellftisse (84) on the bottom derive the Rückentagplatte (2) is provided, are preferably formed integrally therewith. . 25.) Device according to one of the preceding claims, characterized in that the motor fan (5, 6) is attached to the back support plate (2), preferably exclusively, via elastic elements (77, 78). 26.) Device according to claim 25, characterized in that two rubber-elastic elements (78) horizontally side by side, preferably on the fan housing (52) and one - in elae - * # e plan view between the former lying -gummielastic element with a perpendicular distance to the the former, preferably in the upper region of the motor (5), as on a machine housing (46) provided between the motor (5) and the starter device (40). 27.) Device according to claim 25 or 26, characterized in that the lower, preferably in corresponding recesses of the feet (84) of the back support plate (2) lying rubber-elastic Elemerib (78) with vertical axial direction and the upper rubber-elastic element (77) with are arranged approximately perpendicular, preferably horizontal Aähsrichtung to the level of the back support plate (2). __ 28.) Device according to one of the preceding claims, characterized in that the rubber-elastic elements are formed by elastic intermediate members (80) made of rubber or the like, which are provided on their end faces with contact plates (81), preferably in the axis of the intermediate member (80) lying screws (82,83) for fastening to the back support plate (2) and the motor fan (5,6) are screwed in. 29.) Device according to one of the preceding claims, characterized in that ß at least the upper fastening point (87) of the motor fan @ .r56 @ (5,6) on the back support plate (2) is easily detachable. 30.) Device according to one of the preceding claims, characterized in that the backpack plate (2) by a preferably on the Rückoaite verriites molded part made of Munet®toff or the like. Of essentially the same thickness * is formed over the entire extension. 31.) Device according to one of the preceding claims, characterized in that the back support plate (2) is elastic. 32.) Backpack plant protection device for the optional discharge of spray, dust, mist, spray or granulate agents with a container arranged above a drive motor and a fan connected to it for receiving the air carrier as well as with a * on the approximately vertical one Axis provided fan and the container connected discharge channel and a back support device having, for example, a backpack plate with straps, in particular according to one of the preceding claims, characterized in that the shoulder straps (2I) of the backpack device (1) in their upper area directly Airs are attached to the container (3). 33.) Apparatus according to claim 32, characterized in that the upper fastening members (16) of the Shoulder straps (21 ') for attaching the Container (3) with the backpack device (1) are connected. 34.) Device according to spoke 32 or 33, thereby kena shows that the shoulder strap ends (2G) between the container (3) and the Rügken- support plate (2) on the transverse to this - the fastening members (16) arranged, are preferably clamped. 35.) Device according to one of the preceding claims, characterized in that preferably hexagonal nuts (13) for the through Screw bolts: (16) formed fastening members in the wall (11) of the container (3) are embedded. 36.) Device according to claim 35, characterized in that that the nuts (13) on the U mtang at least one External dimension, preferably a circumferential groove (15) have, in each of which a corresponding Approach, like the ring approach (14) of the container wall (11) engages positively. 3i.) Device according to one of the preceding claims, characterized in that the head (1 '?) each Fixing screw 1 6 or 24) is countersunk in the front of the back support plate (2). 38.) Device according to one of the preceding claims, characterized in that the shoulder straps (21) are guided upwards from the upper fastening points (16) and possibly deflected at the upper gante (12) of the back support plate (2). 39.) Device according to one of the preceding claims, characterized in that the container (3) consists essentially of a blown part. 40.) Backpack-type plant protection device for the optional discharge of spray, mist, dust, spray or G: aulatmittel with a above a drive motor and a fan connected to this drive for receiving the discharge means and with a container with an approximately vertical axis provided and the discharge channel connected to the container and a backpack device having, for example, a backpack plate with straps, a fuel tank being arranged above the engine, characterized in that the fuel tank (4) is arranged between the engine (5) and the container (3) . 41.) Device according to claim 40, characterized in that the fuel tank (4) and the container (3) form a structural unit with one another. 42.) Device according to one of the preceding claims, characterized in that the fuel tank (4) is attached to the container (3) via an easily detachable connection, preferably a plug connection (31, 33). 43.) Device according to one of the preceding claims, characterized in that the fuel tank (4) is suspended from the container (3). 44.) Device according to one of the preceding claims, characterized in that the lower wall (29) of the container (3), preferably in the middle, is shaped into a, for example, circular locking projection (31), which is in the upper wall (28) of the A corresponding latching opening (32) is assigned to the fuel tank (4). 45.) * et up instrument according to any preceding-Aneprüche, characterized in that the fuel tank (4) the container (3) on at least one side, preferably partially surrounds at the rear. 46.) Device according to one of the preceding claims, characterized in that in the unsupported position the container (3) and / or the Kcaftätofftank (4) on the Notorgebläse (5,6) are supported, preferably centered ( is). 47.) Device according to claim 46, characterized in that the fuel tank (4) has a molded centering opening (49) in its lower wall (48 ) which partially engages around the housing (16, 46) of the starter device (40) . 48.) A portable back plant protection device for election comprise discharging SprUh-, Stäube-, mist, spray or granular agents having an upper half of a drive motor and a drive-connected Bellerose this Gebläse® arranged sawn container for receiving the Austragmittele and with a to the fan provided with an approximately vertical axis and the container connected to the lustragkaaal and a back support plate with belts having a back support plate, in particular according to one of the preceding claims, characterized marked that the pull rope (90) of the Starter device (40) on the side of the back Carrying device above the discharge channel (129) and below the top. Belt deflection place (12), preferably at armpit height is led. 49.) Device according to spoke 48, characterized in that that the edge hat (96) at the end of the pull cords (90) in the rest position forward and preferably is directed obliquely downwards. 50 :) Device according to address 48 or 49, thereby indicates that the handle (96) is in the rest position under the force of one on the pull rope (90) acting return spring (44) with its rear End face (98) on a pührnngeausneh- nmmng (g2) for the pull rope (90) surrounding alignment surface (95) is applied. 51.) device according to claim 50, characterized in that that on the side of the backpack device (1), preferably on the side of the discharge channel (129) a protruding, the guide recess (92) and strut having the alignment surface (95) (93) is arranged. 52.) Device according to claim 51, characterized in that the free, the guide recess (92) having end (94) of the strut (93) is peeled off and that the front surface (95) of this end (94) obliquely downward and preferably obliquely is directed outwards. 53.) Device according to one of the preceding claims, characterized in that the guide recess (92) lies approximately in the plane of the rope pulley (41) of the starter device (40). 54.) Backpack plant protection device for the optional discharge of spray, dust, mist, spray or granulate agents with a container arranged above a drive motor and a fan connected to this drive for receiving the discharge agent as well as with a container for about perpendicular axis provided and the discharge channel connected to the container and a backpack device having, for example, a backpack plate with straps, in particular according to one of the preceding claims, characterized in that the discharge channel (129) or the fan housing (52) with the container via two newspapers (115, 116) (3) is connected and that in itself known way between the side by side lying openings (103, 102) of the lines ('i15, 116) in the fan housing or the Discharge channel a movable regulating or throttle flap (106) is arranged2 which is in a closing position on at least one mouth (103) and into the air flow in the blower housing or in the outside portable channel is movable. 55.) Device according to claim 542, characterized in that that the mouths (1®2D 103) in. better known Way at the top of a discharge nozzle (57) of the fan housing (52) for the discharge kenal (129) one behind the other in its longitudinal direction other are provided and that the Regelappe (106). In the connection (57) between the D ends (1029 103) around one to: whose plane parallel f in front of assigned to horizontal and to the connecting piece vertical aohoe (107) pivotably mounted iot. 56.) Device according to Aunp.oh 54 ode2 55, thereby marked shows that the control valve (106) is smaller than the clear cross-section of the connection piece (57) is. 57.) Gart after one of the preceding anapche, indicated that the control flap (1®6) in its closed position on the rear mouth (103) of the discharge nozzle (57) in the direction of flow (arrow.101). 58.) Geräfnach one of the preceding claims, characterized in that the control flap, preferably via a Bowden cable (124) with a handle (133) 3 provided at the front end of the discharge channel (129) is preferably detachably connected. . 59.) Backpack-able plant protection device for the optional discharge of spray, dust, mist, spray or granulate agents with a container arranged above a drive motor and a fan connected to this drive for receiving the discharge agent as well as with a container provided with an approximately vertical axis blower and the container connected to the discharge channel and, for example, a back support plate with straps having back support device, in particular for a use the previous claims, gekennheiohnet in DAB in the spray head (156) of the discharge channel (129) a conduit connected to the container (3) nozzle (155 ) is provided with an infinitely variable passage cross-section. 60.) Device according to claim 59, characterized in that in front of the nozzle outlet opening (155) in the supply line (162, `i63, 154) a; with a handle (150) provided control valve (147 to 151) is arranged. 61.) Device according to claim 60, characterized in that the control valve has a cam (15`9) rotatably mounted in a housing (147), in which Movement area an inlet opening (152) for the sprinkling is provided in the housing (1 ¢ 7) 62.) Device according to claim 61, characterized in that that the curve as a front curve (151) at a Sleeve (149) is provided, on whose from the Housing (147) protruding end of the handle (150) is provided. 63.) Device according to one of the preceding claims, characterized in that in itself known ter way the handle (150) on the top of the Au®traanalee (129). 64.) Device according to one of the preceding claims, characterized in that the valve housing (147) is formed in one piece with the breathing part (14) of the discharge channel (129). 65.) Backpack plant protection device for the optional discharge of spray, dust, mist, spray or granulate agents with a loading arranged above a drive motor and a fan connected to the drive. colder for taking the discharge means and with a discharge channel connected to the fan provided with an approximately vertical axis and the container and a backpack device having, for example, a backpack plate with straps, in particular according to e-`h.em of the preceding. Claims characterized in that the handle (133) connected to the folding flap (106): is connected to a valve (141 to 143) arranged in the supply line (162, 163) for the valve (141 to 143). 66.) Device according to claim 65, characterized in that the pivot axis (135) of the handle (133) removes a stem plug (141) of the valve, preferably is formed in one piece with it. 67.) Device according to claim 65 or 66, characterized in that the Control flap (106) in the closed position when the valve (141 to 143) is open and transversely to the direction of flow when the valve is closed Ufeil 101) of the blower air flow lies. 68.) Device according to one of the preceding claims, characterized in that the front En des Austraanales (129) a preferably Handle protruding obliquely upwards and forwards (130) is provided on the. at least one handle (133 to 134) for the control flap (106) / the Versäser (73) charged and or the motor (5) is stored . ) Device according to claim 68, characterized .g " that designed as a lever (133, 134) Hand® a "commonama v preferably horizontal tale axis (135) can be swiveled on the handle (13®) are stored :. 70. ) Device according to kaspr u oh 692 characterized that the handle (133a 134) on the corpse preferably on the inside of the handle (130) are provided. 71.) Device after a. of the previous expression: idhe s characterized in that the hand (133) £ r the eelappQ (106 ) on the handle (130) opposite side of the other hand lever (134) liGto 72.) Device according to one of the preceding claims, characterized in that the handle (133 or $ 13) is inclined to the plane of the handle (130). 73.) Device according to one of the preceding claims, characterized in that the valve (1Q = 1 to 143) connected to the handle (133) for the control flap (106) in the handle (130), preferably with the discharge channel ( 129) - is arranged on the vertical axis.