EP0761534B1 - Dispositif de remplissage du réservoir d'un pulvérisateur de produits phytosanitaires - Google Patents

Dispositif de remplissage du réservoir d'un pulvérisateur de produits phytosanitaires Download PDF

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Publication number
EP0761534B1
EP0761534B1 EP96401855A EP96401855A EP0761534B1 EP 0761534 B1 EP0761534 B1 EP 0761534B1 EP 96401855 A EP96401855 A EP 96401855A EP 96401855 A EP96401855 A EP 96401855A EP 0761534 B1 EP0761534 B1 EP 0761534B1
Authority
EP
European Patent Office
Prior art keywords
reservoir
valve
pressure
piston
tank
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP96401855A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0761534A1 (fr
Inventor
Patrick Ballu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Exel Industries SA
Original Assignee
Exel Industries SA
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 Exel Industries SA filed Critical Exel Industries SA
Publication of EP0761534A1 publication Critical patent/EP0761534A1/fr
Application granted granted Critical
Publication of EP0761534B1 publication Critical patent/EP0761534B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B05B7/14—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 designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1431—Arrangements for supplying particulate material comprising means for supplying an additional liquid
    • B05B7/1436—Arrangements for supplying particulate material comprising means for supplying an additional liquid to a container where the particulate material and the additional liquid are brought together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
    • B65B3/34—Methods or devices for controlling the quantity of the material fed or filled by timing of filling operations
    • B65B3/36—Methods or devices for controlling the quantity of the material fed or filled by timing of filling operations and arresting flow by cut-off means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88054—Direct response normally closed valve limits direction of flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88062—Coaxial oppositely directed seats

Definitions

  • the present invention relates to a device for filling a product sprayer tank phytosanitary in aqueous solution, and, more particularly, to such a device comprising means connection to a pressurized water source and a non-return valve placed in these connection means and mounted passing from the source to the tank.
  • This sprayer conventionally comprises a lance of spray powered by a pressure tank containing an aqueous solution of a phytosanitary product. A dose of this product being introduced into the tank, it is closed and connected to the distribution network of water, for example by means of a "quick" connection. Under the mains water pressure, the non-return valve opens and the tank fills until the air initially contained in the tank is compressed to the pressure which balances that of mains water.
  • This device thus allows convenient filling of the tank while compressing the air trapped there.
  • the water pressure of the distribution varies widely, commonly from 2 to 10 bars.
  • the volume of the compressed air in the tank will then be a function of network water pressure.
  • the volume of water in the tank varies with this pressure. This variation then disrupts the dosage of the product. phytosanitary initially introduced, which can be very harmful with regard to the effectiveness of the treatment of the plants concerned.
  • the network water pressure is very higher than the set pressure for the tank, there is a risk of bringing it to pressure excessive, which can be dangerous.
  • the pressure in the tank can fall back too low and the user must then operate a manual pump conventionally integrated into the sprayer to build up pressure in the tank.
  • the sprayer of the type described above excluding the presence of a safety valve opening by hissing in the range of water pressure variation of the network, the user has no means of signaling, while it activates the pump, only sufficient pressure is restored to the sprayer. He can pursue the pumping beyond what is necessary, which is tiring and useless.
  • the present invention therefore aims to achieve a tank filling device of a sprayer phytosanitary products with the water necessary for formation of such a slurry, which ensures this filling with a constant volume of dilution water allowing a precise dosage of the plant protection product contained in the porridge.
  • the present invention also aims to achieve a such a device which simultaneously pressurizes of the tank.
  • the present invention also aims to achieve such a device making it possible to establish in the tank, before use, a sufficient pressure level to spray the entire contents of the tank.
  • the present invention also aims to achieve a such a device which is safe and which avoids pollution possible by overflow of the spray mixture during filling with water.
  • the quantity of water introduced in the tank remains constant regardless of the pressure prevailing in the distribution network used to fill the tank.
  • Product dilution phytosanitary previously introduced into the tank can then be adjusted precisely.
  • the device shown comprises a body 1 designed to be removably attached to a neck 2 a of a tank 2 by any known means, clipping, pinning or screwing, for example.
  • the body 1, of revolution can be designed to be screwed onto the neck of an orifice provided for the introduction of the dose of phytosanitary product to be sprayed.
  • the reservoir 2 is conventionally equipped with a piston pump used to pressurize the reservoir and a spray lance connected to the reservoir by a flexible conduit, these various conventional members not being shown in the drawing.
  • An O-ring 3 seals the mounting of the body 1 of the device on the neck 2 a .
  • the body 1 comprises a nozzle 4 shaped to be connectable to a distribution network, by a "quick" connection for example, and a base 4 o on which is fixed coaxially a part 5 defining with this base a housing 6 for a check valve. -return 7 loaded against its seat 8 by a spring 9 bearing on the part 5.
  • a calibrated valve 10 is mounted on this part 5, between chamber 6 and the interior of the reservoir, holes 11 being drilled radially in this piece to ensure fluid communication between the chamber 6 and the interior of the tank 2 when the valve 10 is moved away from its seat, as shown in FIG. 1.
  • the seat of the valve 10 is constituted by an axial bore 5 a formed in the part 5.
  • the valve 10 has a foot 10 a anchored in a central extension 12 a of a membrane 12 made of an elastic material. This extension passes through a washer 13 attached to the membrane to pinch the foot of the valve.
  • This washer is axially movable in a cage 14 (shown in axial half-section in Figure 1) sealed and fixed on the part 5 to contain a spring 15 loading the washer to an axial position where the valve 10 which it supports is separated from its headquarters 5 a .
  • a sprayer equipped with the device according to the invention When using a sprayer equipped with the device according to the invention, one begins by introducing a dose of a phytosanitary product, liquid or solid, through an orifice of the tank of the sprayer. This can be a specialized orifice, or one which removably receives the pump piston which conventionally equips a portable sprayer of phytosanitary products.
  • the water distribution network is then connected to the reservoir via a flexible conduit provided with a female quick connector, for example, by connecting the latter to the male quick connector 4 of the device according to the invention.
  • a flexible conduit provided with a female quick connector
  • the network water arriving along the arrow F pushes the non-return valve 7 away from its seat, enters the chamber 6, passes between the valve 10 and its seat 5 a on the part 5, and enters the reservoir through the radial holes 11, according to the arrows F 1 .
  • this value predetermined corresponds to a predetermined volume of water, or useful volume, which regulates the dilution rate of the quantity phytosanitary product previously introduced into the tank, at an appropriate value.
  • the pressure acting on the membrane opposing the thrust of the spring, this increasing pressure eventually overcomes this push and causes the valve 10 to close on its seat, for a predetermined air pressure value. Mariotte's law fixes the volume of air then reached, and therefore the volume of water contained in the tank.
  • Sprayers are commonly equipped with a safety valve.
  • the setting of valve 10 will then be set at a pressure value (2 bars, for example) lower than the one that opens the valve (3 bars about).
  • the tared valve of the device according to the invention avoids any risk of overpressure of the tank during water filling, which removes any risk of explosion of the tank and makes it possible to respect national or international regulations which limit the value of the product of the volume of the tank by the maximum pressure likely to prevail there.
  • the valve prevents also any overflow of porridge out of the tank, by a safety valve for example. A cause of pollution of the environment is thus deleted.
  • the device can be provided with means making it possible to vary the amount of water admitted to the tank. he it suffices to modify the calibration of the valve. We reach this result simply using a 14 'screw stop (shown in axial half-section in Figure 1) mounted at the place the bottom of the cage 14 to vary the compression of spring 15. The stop is then graduated in volume of water admitted.
  • FIG. 2 to 4 There are schematically shown in Figures 2 to 4 various variants of the calibrated valve of the device of the present invention, mounted on bodies 1 1 , 1 2 , 1 3 respectively, themselves fixed on the neck 2 a of the tank 2 as the body 1 of the device of Figure 1.
  • a check valve 7 1 slightly different but classic, from that of Figure 1, as well as the arrows F and F 1 of this figure.
  • the calibrated valve takes the form of a cylindrical cap 16 which slides on the wall of a chamber 6 1 itself cylindrical, formed downstream of the non-return valve 7 1 , in the base 4 1 of the body 1 1 .
  • the cap 16 closes this chamber. Seals conventionally equip the interfaces of the cap and the base 4 1 .
  • a spring 15 1 normally holds the cap in a position which coincides with the holes 18, 19 drilled respectively in the wall of the chamber 6 1 and in the cap 16, so that these establish a fluid communication between the chamber 6 1 and the interior of the reservoir 2. If the pressure exerted by the air on the head 16 a of the cap 16 exceeds a predetermined set value, this pressure pushes the cap towards the spring 15 1 and the fluid communication 18, 19 is cut off.
  • the calibrated valve takes the form of a hollow piston 20 sliding inside a chamber 21 formed in the base 4 2 of the body 1 2 of the device, downstream of the non-return valve 7 1 .
  • a nozzle 22 with holes 23 1 , 23 2 is fixed on the open end of this chamber.
  • a spring 15 2 loads the piston against the end piece 22.
  • the piston 20 comprises two bearing surfaces 20 a , 20 b separated axially from one another and conventionally provided with seals. Between these two bearing surfaces, the piston is pierced with holes 20 c . The wall of the chamber 21 is pierced with a hole 21 a .
  • the holes 20 c , 21 a establish fluid communication between the downstream of the non-return valve 7 1 and the tank.
  • the piston 20 approaches the valve 7 1 and the bearing 20 b closes the fluid communication 20 c , 21 a .
  • the calibrated valve also takes the form of a piston 24 sliding inside a chamber 25 attached to the base 4 3 of the body 1 3 of the device, downstream of the valve 7 1 .
  • a nozzle 26 closes the open end of the chamber 25.
  • the piston 24 is full and includes two bearing surfaces 24 a , 24 b with seals, axially spaced from one another.
  • a passage 27 establishes fluid communication between the downstream of the non-return valve 7 1 and a part of the chamber 25 located between the two bearing surfaces.
  • a spring 15 3 loads the piston 24 against the end piece 26. In this position, the bearing surface 24 b clears a passage 28 in the wall of the chamber 25. Water entering along the arrow F into the body 1 3 can then cross the passages 27 and 28 to enter the reservoir 2.
  • the air pressure which acts on the seat 24 a of the piston 24 exceeds a predetermined set value, the spring 15 3 is crushed and the seat 24 b is closed the chamber 25 by cutting the communication between the passages 27 and 28.
  • the device according to the invention allows achieve the goals set, namely to ensure a filling of the tank with a quantity of water fixed in advance, allowing precise adjustment of the concentration of a phytosanitary product in this amount of water, while ensuring an automatic pressurization of the tank and further preventing the occurrence of overpressure in the tank during filling and therefore the consequences possible damage from such overpressure, in particular deterioration of the tank and overflow of the spray solution out of the tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Catching Or Destruction (AREA)
  • Safety Valves (AREA)
  • Nozzles (AREA)
EP96401855A 1995-09-01 1996-08-29 Dispositif de remplissage du réservoir d'un pulvérisateur de produits phytosanitaires Expired - Lifetime EP0761534B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9510309 1995-09-01
FR9510309A FR2738215B1 (fr) 1995-09-01 1995-09-01 Dispositif de remplissage du reservoir d'un pulverisateur de produits phytosanitaires

Publications (2)

Publication Number Publication Date
EP0761534A1 EP0761534A1 (fr) 1997-03-12
EP0761534B1 true EP0761534B1 (fr) 1999-06-30

Family

ID=9482217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401855A Expired - Lifetime EP0761534B1 (fr) 1995-09-01 1996-08-29 Dispositif de remplissage du réservoir d'un pulvérisateur de produits phytosanitaires

Country Status (5)

Country Link
US (1) US5727605A (es)
EP (1) EP0761534B1 (es)
DE (1) DE69603054T2 (es)
ES (1) ES2135191T3 (es)
FR (1) FR2738215B1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10358085C5 (de) * 2003-12-10 2012-06-28 Danfoss A/S Kältemittel-Ventilanordnung
IL169872A (en) * 2005-07-25 2010-11-30 Zvi Einav Fluid pressure regulator with no-drain valve and a method used therein

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053931A (en) * 1934-11-03 1936-09-08 Patent Dev Company Ltd Pressure control valve
US2608373A (en) * 1946-08-06 1952-08-26 Bridgeport Brass Co Filling apparatus for containers
US4630642A (en) * 1984-12-03 1986-12-23 Tom Mcguane Industries, Inc. Check valve and water injection systems and fuel systems utilizing the same
US4953593A (en) * 1989-05-31 1990-09-04 Edwards William A Fluid mixing apparatus for producing variably carbonated water

Also Published As

Publication number Publication date
DE69603054T2 (de) 1999-10-21
EP0761534A1 (fr) 1997-03-12
ES2135191T3 (es) 1999-10-16
FR2738215B1 (fr) 1997-11-14
DE69603054D1 (de) 1999-08-05
FR2738215A1 (fr) 1997-03-07
US5727605A (en) 1998-03-17

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