WO2002051555A1 - Manually operated device for spraying water that is mixed with an additive - Google Patents

Manually operated device for spraying water that is mixed with an additive Download PDF

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Publication number
WO2002051555A1
WO2002051555A1 PCT/EP2001/014836 EP0114836W WO02051555A1 WO 2002051555 A1 WO2002051555 A1 WO 2002051555A1 EP 0114836 W EP0114836 W EP 0114836W WO 02051555 A1 WO02051555 A1 WO 02051555A1
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WO
WIPO (PCT)
Prior art keywords
cartridge
mixing head
water
pressure
valve
Prior art date
Application number
PCT/EP2001/014836
Other languages
German (de)
French (fr)
Inventor
Manfred Schulte-Frankenfeld
Original Assignee
Gloria-Werke H. Schulte-Frankenfeld Gmbh & Co.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gloria-Werke H. Schulte-Frankenfeld Gmbh & Co. filed Critical Gloria-Werke H. Schulte-Frankenfeld Gmbh & Co.
Publication of WO2002051555A1 publication Critical patent/WO2002051555A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2467—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device a liquid being fed by a pressure generated in the container, which is not produced by a carrying fluid

Definitions

  • the invention relates to a hand-operated device for spraying water, in which an additive in the form of a liquid concentrate, such as a crop protection agent, is mixed, consisting of a spray tube with a spray nozzle and a hand valve upstream of the spray tube with a pressurized water connection.
  • an additive in the form of a liquid concentrate such as a crop protection agent
  • Devices of this type are usually used in crop protection sprayers and are connected to a portable pressure container via their pressure water connection by means of a pressure hose.
  • This pressure vessel absorbs the water already mixed with the respective additive and can be pressurized by means of a hand-operated or motor-driven air pump, which forms an air cushion above the liquid level in the pressure vessel.
  • the invention is therefore based on the object of providing a device of the type mentioned at the outset in which the smallest possible number of parts is contaminated with the concentrated additive and which enables a controlled admixture of the concentrated additive to the water to be sprayed.
  • an admixing device is arranged between the hand valve and the spray tube, which has a mixing head on which the spray tube and a cartridge receiving the concentrate are detachably attached and on which one of the Manual valve coming water supply line is connected, and which further has a pressure piece acting on the cartridge for the purpose of introducing the concentrate into the mixing head, which is coupled to a feed drive which is controllable depending on the actuation of the manual valve and which is also arranged on the admixing device.
  • a further advantage is that the feed drive for the pressure piece is only started when the water supply to the mixing head is released via the manual valve.
  • a pressure regulator which is usually designed as a pressure limiter, is expediently located in the water supply line connected to the mixing head, in order to ensure a constant water flow through the mixing head, to which the concentrated additive is continuously admixed in the same way.
  • a pressure sensor can be provided in the water supply line to the mixing head, which stops the feed drive for the pressure element acting on the cartridge when the pressure falls below a predetermined pressure.
  • the device shown consists of a spray tube 1, at the free end of which a spray nozzle 2 is arranged.
  • the device has a handle 3 designed as a feed pipe, at the end of which there is a pressurized water connection 4.
  • This pressurized water connection 4 can be connected to an existing water network, such as the public water network, or to a pressure container which can be pressurized by means of an air pump and which receives the water to be sprayed, but into which the concentrated additive to be mixed with the water is not to be entered. It is understood that a corresponding hose connection is established between the water source in question and the pressurized water connection 4.
  • a manual valve 6 which is a so-called quick-closing valve.
  • a valve opens fully when actuated via the hand lever 5 and closes immediately when the hand lever 5 is released.
  • the water inlet to a mixing device 7, which has a mixing head 8, is released via the manual valve 6.
  • the mixing head 8 has a mixing channel 9, in which an end connection part 10 of the spray tube 1 and a connection piece 11 can be inserted coaxially opposite one another, of which the connection piece 11 is part of a cartridge 12 which contains the concentrated additive to be mixed with the water.
  • a channel 13 opens into the mixing channel 9 of the mixing head 8, to which a water supply line 14 coming from the manual valve 6 is connected, which can be integrated in the frame of the admixing device 7.
  • the mixing of the water supplied via the water supply line 14 in the mixing head 8 takes place in the mixing channel 9, in which the concentrated additive is added to the water in a short way and the water mixed with the additive is introduced into the spray tube 1.
  • the cartridge 12 At the end of its connector 11, which is inserted into the mixing head 8, the cartridge 12 has a check valve 15, which closes the cartridge 12 as soon as the liquid, concentrated additive in the cartridge 12 has fallen below a predetermined pressure or is depressurized is.
  • the filling chamber 16 of the cartridge 12, in which the liquid additive is received is designed as a cylinder, in which there is a displaceable sealing piston 17, which can be acted upon by a pressure piece 18 on its outside.
  • the pressure piece 18 is movable coaxially to the cartridge 12 and carries out such a stroke that the piston 17 can be displaced up to the connection piece 11 within the filling space 16 in order to press the concentrate to be mixed into the water completely out of the cartridge 12.
  • the special feature is that the feed of the pressure piece 18 is controlled as a function of the water supply to the mixing head 8. Because based on the flow rate which is introduced into the spray tube 1 via the mixing head 8, the liquid, concentrated additive is proportionally added to the water in order to achieve the appropriate concentration of the additive in the water to be sprayed.
  • the translatory displacement of the pressure piece 18 takes place via a feed drive 19, which expediently has an electric motor with a gearbox with a linear output. This electric motor can be supplied via a battery or a rechargeable battery 21, which is arranged on the admixing device 7.
  • the control of this electric motor and thus of the feed drive 19 takes place via a pressure regulator 20 which is arranged on the water supply line 14 leading to the mixing head 8 and is located behind the hand valve 6 in the feed direction. Via the pressure regulator 20, the pressure in the water supply line 14 is limited to a certain pressure, on which the temporal flow rate of the water through the mixing head 8 depends. Then the feed of the pressure piece 18 via the feed drive 19 is switched off so that the appropriate amount of the concentrated additive in the mixing channel 9 is added to the water from the cartridge 12.

Abstract

The invention relates to a manually operated device for spraying water, which comprises a lance (1) with a spray nozzle (2) and a hand valve (6) with a pressurized water connection disposed upstream of the lance (1). An admixing device (7) interposed between the hand valve (6) and the lance (1) has a mixing head (8). The lance (1) and a cartridge(12) holding the concentrate are detachably joined to the mixing head (8) and a water feed (14) coming from the hand valve (6) is connected thereto. The admixing device (7) is further provided with a pressure element (18) that impinges the cartridge (12) with pressure for the purpose of feeding the concentrate to the mixing head (8). Said pressure element is further coupled with a feed mechanism (19) that can be controlled according to the actuation of the hand valve (6) and that is likewise disposed on the admixing device (7).

Description

HÄNDBEDIENBARE VORRICHTUNG ZUM VERSPRÜHEN VON MIT EINEM ZUSATZMITTEL VERMISCHTEN WASSERHAND-HELD DEVICE FOR SPRAYING WATER MIXED WITH AN ADDITIVE
Technisches GebietTechnical field
Die Erfindung bezieht sich auf eine handbedienbare Vorrichtung zum Versprühen von Wasser, in das ein Zusatzmittel in Form eines flüssigen Konzentrates, wie ein Pflanzenschutzmittel, eingemischt ist, bestehend aus einem Sprührohr mit einer Sprühdüse und einem dem Sprührohr vorgeordneten Handventil mit einem Druckwasseranschluß.The invention relates to a hand-operated device for spraying water, in which an additive in the form of a liquid concentrate, such as a crop protection agent, is mixed, consisting of a spray tube with a spray nozzle and a hand valve upstream of the spray tube with a pressurized water connection.
Stand der TechnikState of the art
Solche Vorrichtungen werden üblicherweise bei Pflanzenschutzspritzen verwendet und sind hierbei über ihren Druckwasseranschluß mittels eines Druckschlauchs mit einem trag- baren Druckbehälter verbunden. Dieser Druckbehälter nimmt das mit dem jeweiligen Zusatzmittel bereits vermischte Wasser auf und kann mittels einer von Hand betätigbaren oder motorisch angetriebenen Luftpumpe unter Druck gesetzt werden, wodurch sich oberhalb dem Flüssigkeitsspiegel im Druckbehälter ein Luftkissen ausbildet.Devices of this type are usually used in crop protection sprayers and are connected to a portable pressure container via their pressure water connection by means of a pressure hose. This pressure vessel absorbs the water already mixed with the respective additive and can be pressurized by means of a hand-operated or motor-driven air pump, which forms an air cushion above the liquid level in the pressure vessel.
Der Nachteil einer derartigen Gesamtanordnung besteht darin, daß der Druckbehälter, der Zuleitungsschlauch zur Sprühvorrichtung, das Handventil und das Sprührohr mit dem in das Wasser eingemischten Zusatzmittel kontaminiert werden, was giftig sein kann, aber zumindest nicht gerade umweltverträglich ist. Wenn es auch bereits für das Zusatz- konzentrat kleine Gebinde gibt, die auf die einmalige Verwendung abgestellt sind, so besteht bei den bekannten Ein- richtungen doch immer noch die Gefahr, daß das Zusatzkonzentrat dem Wasser mit einer Überdosis beigegeben wird.The disadvantage of such an overall arrangement is that the pressure vessel, the supply hose to the spray device, the manual valve and the spray tube are contaminated with the additive mixed into the water, which can be toxic, but at least is not exactly environmentally friendly. If it is already for the additional concentrate there are small containers which are designed for single use, so there is still the danger with the known devices that the additional concentrate is added to the water with an overdose.
Die ErfindungThe invention
Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, bei der die geringstmögliche Anzahl von Teilen mit dem konzentrierten Zusatzmittel kontaminiert wird und die eine kontrollierte Zumischung des konzentrierten Zusatzmittels zu dem zu versprühenden Wasser ermöglicht.The invention is therefore based on the object of providing a device of the type mentioned at the outset in which the smallest possible number of parts is contaminated with the concentrated additive and which enables a controlled admixture of the concentrated additive to the water to be sprayed.
Diese Aufgabe wird bei einer Vorrichtung der gattungsbildenden Art nach der Erfindung dadurch gelöst, daß zwischen dem Handventil und dem Sprührohr eine Zumischvorrichtung angeordnet ist, die einen Mischkopf hat, an dem das Sprührohr sowie eine das Konzentrat aufnehmende Kartusche lösbar angesetzt sind und an dem eine vom Handventil kommende Wasserzuleitung angeschlossen ist, und die ferner ein die Kartusche zwecks Einleitung des Konzentrates in den Mischkopf beaufschlagendes Druckstück aufweist, das mit einem abhängig von der Betätigung des Handventils steuerbaren Vorschubantrieb gekuppelt ist, der ebenfalls an der Zumischvorrichtung angeordnet ist.This object is achieved in a device of the generic type according to the invention in that an admixing device is arranged between the hand valve and the spray tube, which has a mixing head on which the spray tube and a cartridge receiving the concentrate are detachably attached and on which one of the Manual valve coming water supply line is connected, and which further has a pressure piece acting on the cartridge for the purpose of introducing the concentrate into the mixing head, which is coupled to a feed drive which is controllable depending on the actuation of the manual valve and which is also arranged on the admixing device.
Für die Erfindung ist wesentlich, daß lediglich der Mischkopf und das Mischrohr von dem konzentrierten Zusatzmittel kontaminiert werden, nicht dagegen die gesamte Wasserzulei- tung bis zum Mischkopf hin einschließlich dem Handventil. So kann bei Leckagen, die am Druckwasseranschluß oder am Handventil auftreten können, lediglich Wasser austreten, weswegen an diesen Stellen vor dem Mischkopf ein Kontakt mit dem konzentrierten Zusatzmittel unmöglich ist. Andererseits können an der Stelle, an der die Kartusche in den Mischkopf eingesetzt wird, besondere Sicherheitsvorkehrun- gen und -einrichtungen vorgesehen werden, hierzu gehört vor allem ein Sicherheitsventil, insbesondere ein absperrendes Rückschlagventil, in einem Anschlußstück, mit dem die Kartusche in den Mischkopf fest einsetzbar ist. Dieses Sicherheitsventil verhindert ein Austreten des konzentrierten Zu- satzmittels aus der Kartusche, solange die Kartusche nicht bestimmungsgemäß von dem Druckstück der Zumischvorrichtung beaufschlagt wird.It is essential for the invention that only the mixing head and the mixing tube are contaminated by the concentrated additive, but not the entire water supply up to the mixing head including the manual valve. In the case of leaks that can occur at the pressurized water connection or the manual valve, only water can escape, which is why contact with the concentrated additive is impossible at these points in front of the mixing head. On the other hand, special safety precautions and devices can be provided at the point at which the cartridge is inserted into the mixing head; this includes, above all, a safety valve, in particular a shut-off check valve, in a connector with which the cartridge is fixed in the mixing head can be used. This safety valve prevents the concentrated additive from escaping from the cartridge as long as the pressure piece of the admixing device does not act on the cartridge as intended.
Von weiterem Vorteil ist, daß der Vorschubantrieb für das Druckstück nur dann in Gang gesetzt wird, wenn über das Handventil der Wasserzulauf zum Mischkopf freigegeben ist. Zweckmäßig sitzt in der an dem Mischkopf angeschlossenen Wasserzuleitung ein Druckregler, der in der Regel als Druckbegrenzer ausgebildet ist, um eine konstante Wasser- durchflußmenge durch den Mischkopf sicherzustellen, der in gleicher Weise kontinuierlich das konzentrierte Zusatzmittel beigemischt wird. Hierbei kann in der Wasserzuleitung zum Mischkopf hin ein Drucksensor vorgesehen werden, der bei Unterschreiten eines vorgegebenen Drucks den Vorschub- antrieb für das die Kartusche beaufschlagende Druckstück stillsetzt. Weitere vorteilhafte Ausgestaltungsmerkmale der Erfindung ergeben sich aus den Unteransprüchen und aus der nächste- henden Beschreibung.A further advantage is that the feed drive for the pressure piece is only started when the water supply to the mixing head is released via the manual valve. A pressure regulator, which is usually designed as a pressure limiter, is expediently located in the water supply line connected to the mixing head, in order to ensure a constant water flow through the mixing head, to which the concentrated additive is continuously admixed in the same way. In this case, a pressure sensor can be provided in the water supply line to the mixing head, which stops the feed drive for the pressure element acting on the cartridge when the pressure falls below a predetermined pressure. Further advantageous design features of the invention result from the subclaims and from the description below.
Kurzbeschreibung der ZeichnungsabbildunqBrief description of the drawing illustration
Die Erfindung wird nachfolgend an Hand der Zeichnung an ei- nem Ausführungsbeispiel noch näher erläutert. Die Zeichnung zeigt in teilgeschnittener Ansicht eine handbedienbare Vorrichtung zum Versprühen von mit einem Zusatzmittel versetzten Wasser.The invention is explained in more detail below with reference to the drawing using an exemplary embodiment. The drawing shows a partially sectioned view of a hand-operated device for spraying water mixed with an additive.
Wege zur Ausführung der ErfindungWays of Carrying Out the Invention
Im einzelnen besteht die dargestellte Vorrichtung aus einem Sprührohr 1, an dessen freiem Ende eine Sprühdüse 2 angeordnet ist. An dem dem Sprührohr 1 abgelegenen Ende hat die Vorrichtung einen als Zuleitungsrohr ausgebildeten Handgriff 3, an dessen Ende sich ein Druckwasseranschluß 4 befindet. Dieser Druckwasseranschluß 4 kann mit einem vorhandenen Wassernetz, wie dem öffentlichen Wassernetz, oder mit einem mittels einer Luftpumpe unter Druck setzbaren Druck- behälter verbunden werden, der das zu versprühende Wasser aufnimmt, in den jedoch nicht das dem Wasser beizumischende konzentrierte Zusatzmittel einzugeben ist. Es versteht sich, daß zwischen der betreffenden Wasserquelle und dem Druckwasseranschluß 4 eine entsprechende Schlauchverbindung hergestellt wird. Am Handgriff 3 befindet sich ein Griffhebel 5, über den ein Handventil 6 betätigt werden kann, bei dem es sich um ein sogenanntes Schnellschlußventil handelt. Ein solches Ventil öffnet bei Betätigung über den Handhebel 5 voll und schließt augenblicklich beim Loslassen des Handhebels 5.In particular, the device shown consists of a spray tube 1, at the free end of which a spray nozzle 2 is arranged. At the end remote from the spray pipe 1, the device has a handle 3 designed as a feed pipe, at the end of which there is a pressurized water connection 4. This pressurized water connection 4 can be connected to an existing water network, such as the public water network, or to a pressure container which can be pressurized by means of an air pump and which receives the water to be sprayed, but into which the concentrated additive to be mixed with the water is not to be entered. It is understood that a corresponding hose connection is established between the water source in question and the pressurized water connection 4. On the handle 3 there is a handle lever 5, via which a manual valve 6 can be actuated, which is a so-called quick-closing valve. Such a valve opens fully when actuated via the hand lever 5 and closes immediately when the hand lever 5 is released.
Über das Handventil 6 wird der Wasserzulauf zu einer Zu- mischvorrichtung 7 freigegeben, die einen Mischkopf 8 aufweist. Der Mischkopf 8 hat einen Mischkanal 9, in den koaxial einander gegenüberliegend ein endseitiges Anschlußteil 10 des Sprührohres 1 und ein Anschlußstück 11 fest eingesetzt werden können, wovon das Anschlußstück 11 Teil einer Kartusche 12 ist, die das dem Wasser beizumischende konzentrierte Zusatzmittel enthält.The water inlet to a mixing device 7, which has a mixing head 8, is released via the manual valve 6. The mixing head 8 has a mixing channel 9, in which an end connection part 10 of the spray tube 1 and a connection piece 11 can be inserted coaxially opposite one another, of which the connection piece 11 is part of a cartridge 12 which contains the concentrated additive to be mixed with the water.
Quer in den Mischkanal 9 des Mischkopfes 8 mündet ein Kanal 13, an den eine vom Handventil 6 kommende Wasserzuleitung 14 angeschlossen ist, die in das Gestell der Zumischvor- richtung 7 integriert sein kann. Die Vermischung des über die Wasserzuleitung 14 zugeführten Wassers im Mischkopf 8 erfolgt im Mischkanal 9, in welchem auf kurzem Wege dem Wasser das konzentrierte Zusatzmittel zugegeben und das mit dem Zusatzmittel versetzte Wasser in das Sprührohr 1 eingeleitet wird.A channel 13 opens into the mixing channel 9 of the mixing head 8, to which a water supply line 14 coming from the manual valve 6 is connected, which can be integrated in the frame of the admixing device 7. The mixing of the water supplied via the water supply line 14 in the mixing head 8 takes place in the mixing channel 9, in which the concentrated additive is added to the water in a short way and the water mixed with the additive is introduced into the spray tube 1.
Die Kartusche 12 hat am Ende ihres Anschlußstücks 11, welches in den Mischkopf 8 eingesetzt wird, ein Rückschlagven- til 15, welches die Kartusche 12 verschließt, sobald das flüssige, konzentrierte Zusatzmittel in der Kartusche 12 einen vorgegebenen Druck unterschritten hat bzw. drucklos ist. Denn die Ausbringung des konzentrierten Zusatzmittels aus der Kartusche 12 heraus in den Mischkanal 9 des Sprüh- kopfes 8 hinein erfordert eine Druckbeaufschlagung der Kartusche 12 auf mechanischem Wege. Dazu ist der Füllraum 16 der Kartusche 12, in dem das flüssige Zusatzmittel aufgenommen wird als Zylinder ausgebildet, in dem sich ein ver- schieblicher Dichtkolben 17 befindet, der an seiner Außen- seite von einem Druckstück 18 beaufschlagt werden kann. Das Druckstück 18 ist koaxial zur Kartusche 12 beweglich und führt einen solchen Hub aus, daß der Kolben 17 bis zum Anschlußstück 11 innerhalb des Füllraums 16 verschoben werden kann, um das dem Wasser beizumischende Konzentrat mög- liehst vollständig aus der Kartusche 12 herauszudrücken.At the end of its connector 11, which is inserted into the mixing head 8, the cartridge 12 has a check valve 15, which closes the cartridge 12 as soon as the liquid, concentrated additive in the cartridge 12 has fallen below a predetermined pressure or is depressurized is. This is because the delivery of the concentrated additive from the cartridge 12 into the mixing channel 9 of the spray head 8 requires the cartridge 12 to be pressurized mechanically. For this purpose, the filling chamber 16 of the cartridge 12, in which the liquid additive is received, is designed as a cylinder, in which there is a displaceable sealing piston 17, which can be acted upon by a pressure piece 18 on its outside. The pressure piece 18 is movable coaxially to the cartridge 12 and carries out such a stroke that the piston 17 can be displaced up to the connection piece 11 within the filling space 16 in order to press the concentrate to be mixed into the water completely out of the cartridge 12.
Die Besonderheit ist, daß der Vorschub des Druckstücks 18 in Abhängigkeit von dem Wasserzulauf zum Mischkopf 8 gesteuert wird. Denn bezogen auf die Durchflußmenge, die über den Mischkopf 8 in das Sprührohr 1 eingeleitet wird, erfolgt proportional die Zumischung des flüssigen, konzentrierten Zusatzmittels zu dem Wasser, um in dem zu versprühenden Wasser die passende Konzentration des Zusatzmittels zu erzielen. Die translatorische Verschiebung des Druck- stücks 18 erfolgt über einen Vorschubantrieb 19, der zweckmäßigerweise einen Elektromotor mit einem Getriebe mit linearem Abtrieb aufweist. Die Versorgung dieses Elektromotors kann über eine Batterie oder einen Akku 21 erfolgen, der an der Zumischvorrichtung 7 angeordnet ist. Die Steue- rung dieses Elektromotors und damit des Vorschubantriebs 19 geschieht über einen Druckregler 20, der an der zum Mischkopf 8 hinführenden Wasserzuleitung 14 angeordnet ist und sich in Zulaufrichtung hinter dem Handventil 6 befindet. Über den Druckregler 20 wird der Druck in der Wasserzulei- tung 14 auf einen bestimmten Druck begrenzt, von dem die zeitliche Durchflußmenge des Wassers durch den Mischkopf 8 abhängig ist. Darauf ist der Vorschub des Druckstücks 18 über den Vorschubantrieb 19 so abgestellt, daß aus der Kartusche 12 die passende Menge des konzentrierten Zusatzmit- tels im Mischkanal 9 dem Wasser zugesetzt wird. Fällt der Druck in der Wasserzuleitung 14 unter den vorgegebenen Gfenzdruck ab, wozu in der Wasserzuleitung 14 ein entsprechender Drucksensor vorgesehen werden kann, dann wird der Vorschubantrieb 19 und damit der Vorschub des Druckstücks 18 stillgesetzt, womit augenblicklich die Zumischung des konzentrierten Zusatzmittels zu dem aus dem Sprührohr 1 ausgetragenen Wasser unterbrochen ist. The special feature is that the feed of the pressure piece 18 is controlled as a function of the water supply to the mixing head 8. Because based on the flow rate which is introduced into the spray tube 1 via the mixing head 8, the liquid, concentrated additive is proportionally added to the water in order to achieve the appropriate concentration of the additive in the water to be sprayed. The translatory displacement of the pressure piece 18 takes place via a feed drive 19, which expediently has an electric motor with a gearbox with a linear output. This electric motor can be supplied via a battery or a rechargeable battery 21, which is arranged on the admixing device 7. The control of this electric motor and thus of the feed drive 19 takes place via a pressure regulator 20 which is arranged on the water supply line 14 leading to the mixing head 8 and is located behind the hand valve 6 in the feed direction. Via the pressure regulator 20, the pressure in the water supply line 14 is limited to a certain pressure, on which the temporal flow rate of the water through the mixing head 8 depends. Then the feed of the pressure piece 18 via the feed drive 19 is switched off so that the appropriate amount of the concentrated additive in the mixing channel 9 is added to the water from the cartridge 12. If the pressure in the water supply line 14 drops below the predetermined limit pressure, for which purpose a corresponding pressure sensor can be provided in the water supply line 14, then the feed drive 19 and thus the feed of the pressure piece 18 is stopped, which means that the admixture of the concentrated additive to that from the Spray pipe 1 discharged water is interrupted.

Claims

Patentansprüche claims
1. Handbedienbare Vorrichtung zum Versprühen von Wasser, in das ein Zusatzmittel in Form eines flüssigen Konzentrates, wie ein Pflanzenschutzmittel, eingemischt ist, bestehend aus einem Sprührohr (1) mit einer Sprühdüse (2) und einem dem Sprührohr (1) vorgeordneten Handventil (6) mit einem Druckwasseranschluß (4), dadurch gekennzeichnet, daß zwischen dem Handventil (6) und dem Sprührohr (1) eine Zumischvorrichtung (7) angeordnet ist, die einen Mischkopf (8) hat, an dem das Sprührohr (1) sowie eine das Konzentrat aufnehmende Kartusche (12) lösbar angesetzt sind und an dem eine vom Handventil (6) kommende Wasserzuleitung (14) angeschlossen ist, und die ferner ein die Kartusche (12) zwecks Einleitung des Konzentrates in den Mischkopf (8) beaufschlagendes Druckstück (18) aufweist, das mit einem abhängig von der Betätigung des Handventils (6) steuerbaren Vorschubantrieb (19) gekuppelt ist, der ebenfalls an der Zumischvorrichtung (7) angeordnet ist.1.Hand-operated device for spraying water into which an additive in the form of a liquid concentrate, such as a crop protection agent, is mixed, consisting of a spray tube (1) with a spray nozzle (2) and a hand valve (6) upstream of the spray tube (1) ) with a pressurized water connection (4), characterized in that between the hand valve (6) and the spray tube (1) a metering device (7) is arranged, which has a mixing head (8) on which the spray tube (1) and a The cartridge (12) holding the concentrate is detachably attached and to which a water supply line (14) coming from the manual valve (6) is connected, and which also has a pressure piece (18) acting on the cartridge (12) for introducing the concentrate into the mixing head (8). which is coupled to a feed drive (19) which can be controlled as a function of the actuation of the manual valve (6) and which is also arranged on the admixing device (7).
2. Vorrichtung nach Anspruch 1, . dadurch gekennzeichnet, daß in der an dem Mischkopf (8) angeschlossenen Wasserzuleitung (14) ein Druckregler (20) angeordnet ist und in Abhängigkeit des hierüber einstellbaren oder einge- stellten Wasserdrucks am Mischkopf (8) der Vorschubantrieb (19) für das die Kartusche (12) beaufschlagende Druckstück (18) gesteuert ist. 2. Device according to claim 1,. characterized in that a pressure regulator (20) is arranged in the water supply line (14) connected to the mixing head (8) and, depending on the water pressure that can be set or set on the mixing head (8), the feed drive (19) for which the cartridge ( 12) acting pressure piece (18) is controlled.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Handventil (6) ein bei Betätigung voll öffnendes Schnellschlußventil ist.3. Apparatus according to claim 2, characterized in that the manual valve (6) is a quick-closing valve which opens fully when actuated.
4. Vorrichtung nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß die Kartusche (12) ein in den Mischkopf (8) fest einsetzbares Anschlußstück (11) hat, in dem ein die nicht mit Druck beaufschlagte Kartusche (12) absperren- • des Rückschlagventil (15) angeordnet ist.4. Device according to one of claims 1-3, characterized in that the cartridge (12) has a firmly insertable in the mixing head (8) connector (11), in which a non-pressurized cartridge (12) shut off • the check valve (15) is arranged.
5. Vorrichtung nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß die Kartusche (12) einen Füllraum (16) nach Art eines Zylinders hat, der mittels eines Kolbens (17) dicht abgeschlossen ist, wobei dieser Kolben (17) an seiner Außenseite von dem Druckstück (18) beaufschlagt ist.5. Device according to one of claims 1-4, characterized in that the cartridge (12) has a filling space (16) in the manner of a cylinder which is sealed by means of a piston (17), said piston (17) on it Outside of the pressure piece (18) is acted upon.
6. Vorrichtung nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß der Mischkopf (8) einen Mischkanal (9) hat, an des- sen Enden einander koaxial gegenüber die Kartusche (12) und das Sprührohr (1) ansetzbar sind und in den seitlich ein mit der WasserZuleitung (14) verbundener Kanal (13) mündet . 6. Device according to one of claims 1-5, characterized in that the mixing head (8) has a mixing channel (9), at the ends of which can be used coaxially with respect to the cartridge (12) and the spray tube (1) and in which laterally opens a channel (13) connected to the water supply line (14).
7. Vorrichtung nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß der Vorschubantrieb (19) für das Druckstück (18) einen Elektromotor mit einem Getriebe mit linearem Abtrieb aufweist.7. Device according to one of claims 1-6, characterized in that the feed drive (19) for the pressure piece (18) has an electric motor with a gearbox with a linear output.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß an der Zumischvorrichtung (7) eine Batterie bzw. ein Akku (21) zum Betrieb des Elektromotors des Vorschubantriebs (19) angeordnet ist.8. The device according to claim 7, characterized in that a battery or a rechargeable battery (21) for operating the electric motor of the feed drive (19) is arranged on the admixing device (7).
9. Vorrichtung nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, . daß der Druckwasseranschluß (4) des Handventils (6) mit einem Wassernetz verbindbar ist.9. Device according to one of claims 1-8, characterized in that. that the pressurized water connection (4) of the manual valve (6) can be connected to a water network.
10. Vorrichtung nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß der Druckwasseranschluß (4) des Handventils (6) mit einem tragbaren Druckbehälter verbindbar ist. 10. Device according to one of claims 1-8, characterized in that the pressurized water connection (4) of the manual valve (6) can be connected to a portable pressure vessel.
PCT/EP2001/014836 2000-12-22 2001-12-15 Manually operated device for spraying water that is mixed with an additive WO2002051555A1 (en)

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DE20021802 2000-12-22
DE20021802.6 2000-12-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005036046A1 (en) * 2005-08-01 2007-02-08 Gloria Haus- und Gartengeräte GmbH Cartridge system for adding concentrate directly into diluent liquid, e.g. horticultural or cleaning chemical compositions into hosepipe spray-gun attachment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079564A (en) * 1936-03-20 1937-05-04 Andrew J Noe Spraying device
US2104763A (en) * 1937-01-23 1938-01-11 William A Roehm Spraying device and refill for same
EP0133143A1 (en) * 1983-07-21 1985-02-13 Roland Waldner Portable device for injecting and mixing a liquid product into a water conduit
US4651930A (en) * 1984-06-04 1987-03-24 Economy Distributors, Inc. Shower head attachment and liquid detergent for use therein
EP0563486A1 (en) * 1992-03-30 1993-10-06 Immuno France S.A.R.L. Device for applying a pharmaceutical or cosmetic composition

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079564A (en) * 1936-03-20 1937-05-04 Andrew J Noe Spraying device
US2104763A (en) * 1937-01-23 1938-01-11 William A Roehm Spraying device and refill for same
EP0133143A1 (en) * 1983-07-21 1985-02-13 Roland Waldner Portable device for injecting and mixing a liquid product into a water conduit
US4651930A (en) * 1984-06-04 1987-03-24 Economy Distributors, Inc. Shower head attachment and liquid detergent for use therein
EP0563486A1 (en) * 1992-03-30 1993-10-06 Immuno France S.A.R.L. Device for applying a pharmaceutical or cosmetic composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005036046A1 (en) * 2005-08-01 2007-02-08 Gloria Haus- und Gartengeräte GmbH Cartridge system for adding concentrate directly into diluent liquid, e.g. horticultural or cleaning chemical compositions into hosepipe spray-gun attachment
US7784715B2 (en) 2005-08-01 2010-08-31 Brill Gloria Haus-Und Gartengerate Gmbh Cartridge and admixing apparatus for a manually operable apparatus for spraying water mixed with an additive

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