EP0761534A1 - Vorrichtung zum Befüllen eines Vorratsbehälters einer Versprühvorrichtung für phytosanitäre Produkte - Google Patents
Vorrichtung zum Befüllen eines Vorratsbehälters einer Versprühvorrichtung für phytosanitäre Produkte Download PDFInfo
- Publication number
- EP0761534A1 EP0761534A1 EP96401855A EP96401855A EP0761534A1 EP 0761534 A1 EP0761534 A1 EP 0761534A1 EP 96401855 A EP96401855 A EP 96401855A EP 96401855 A EP96401855 A EP 96401855A EP 0761534 A1 EP0761534 A1 EP 0761534A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- valve
- reservoir
- pressure
- piston
- 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.)
- Granted
Links
Images
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 the reservoir of a sprayer of phytosanitary products in aqueous solution, and, more particularly, to such a device comprising means for connection to a source of pressurized water and a check valve. return placed in these connection means and mounted passing from the source to the tank.
- a sprayer of this type is known, designed for use by amateur or professional gardeners.
- This sprayer conventionally comprises a spray lance supplied by a pressure tank containing an aqueous solution of a phytosanitary product.
- a dose of this product being introduced into the reservoir, the latter is closed and connected to the water distribution network, for example by means of a "quick" connection.
- the non-return valve opens and the reservoir fills until the air initially contained in the reservoir is compressed to the pressure which balances that of the mains water .
- This device thus allows convenient filling of the tank while compressing the air which is trapped there.
- the water pressure of distribution networks varies widely, usually from 2 to 10 bars. It is understood that, in accordance with Mariotte's law, the volume of compressed air in the tank will then be a function of the pressure of the network water. As a result, the volume of water contained in the tank varies with this pressure. This variation then disturbs the dosage of the phytosanitary product initially introduced, which can be very damaging with regard to the effectiveness of the treatment of the plants concerned.
- the network water pressure is much higher than the set pressure for the tank, there is a risk of bringing the tank to excessive pressure, which can be dangerous.
- the pressure in the tank may drop to a too low level and the user must then activate a manual pump conventionally integrated in the sprayer to raise the pressure in the tank.
- the sprayer of the type described above excludes the presence of a safety valve opening by hissing in the range of variation of the network water pressure, the user has no means of signaling, while it activates the pump, sufficient pressure is restored in the sprayer. It can continue pumping beyond what is necessary, which is tiring and unnecessary.
- the present invention therefore aims to provide a device for filling the reservoir of a sprayer of plant protection products with the water necessary for the formation of such a slurry, which ensures this filling with a constant volume of dilution water allowing a precise dosage of the phytosanitary product contained in the spray.
- the present invention also aims to achieve such a device which simultaneously ensures pressurization of the tank.
- the present invention also aims to provide such a device for establishing in the tank, before use, a level of pressure sufficient to ensure the spraying of the entire contents of the tank.
- the present invention also aims to provide such a device which is safe and which avoids possible pollution by overflow of the slurry during filling with water.
- a device of the type described in the preamble to the present description remarkable in that it comprises a valve means. calibrated mounted between the non-return valve and the tank, in the passage of the water entering the tank, this valve being sensitive to the pressure in the tank to cut off the water supply to the tank when this pressure reaches a predetermined value.
- the quantity of water introduced into the tank remains constant, whatever the pressure prevailing in the distribution network used to fill the tank.
- the dilution of the phytosanitary product 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 the chamber 6 and the interior of the reservoir, holes 11 being drilled radially in this part to ensure fluid communication between the chamber 6 and the interior of the reservoir 2 when the valve 10 is moved away from its seat, as shown in Figure 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 predetermined value corresponds to a predetermined volume of water, or useful volume, which regulates the dilution rate of the quantity of phytosanitary product previously introduced into the tank, to an appropriate value.
- the pressure acting on the membrane opposing the thrust of the spring, this increasing pressure eventually overcomes this thrust and causes the closure of the valve 10 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 fitted with a safety valve.
- the calibration of the valve 10 will then be adjusted to a pressure value (2 bars, for example) lower than that which causes the opening of the valve (or approximately 3 bars).
- the calibrated valve of the device according to the invention avoids any risk of the tank being overpressured during filling with water, which eliminates any risk of explosion of the tank and makes it possible to comply with national or international regulations which limit the value of the product of the volume of the tank by the maximum pressure likely to reign there.
- the valve also prevents any overflow of spray liquid out of the tank, by a safety valve for example. A cause of environmental pollution is thus eliminated.
- the device can be provided with means making it possible to vary the quantity of water admitted into the tank. You just have to change the valve setting. This is achieved simply by using a screw stop 14 '(shown in axial half-section in Figure 1) mounted in place of the bottom of the cage 14 to vary the compression of the spring 15. The stop is then graduated in volume of water admitted.
- FIGS. 2 to 4 show schematically 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 reservoir 2 like 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 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 part of the room 25 located between the two staves.
- 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.
- All the described embodiments of the invention can be manufactured so as to form a whole which can be removably mounted on the tank of the sprayer or, on the contrary, be an integral part of this tank.
- the device according to the invention does indeed achieve the goals set, namely ensuring the filling of the reservoir with a quantity of water fixed in advance, allowing a precise adjustment of the concentration of a phytosanitary product in this quantity of water, while ensuring an automatic pressurization of the tank and also preventing the appearance of an overpressure in the tank during filling and therefore the possible damaging consequences of such an overpressure, in particular deterioration of the tank and overflow of the spray mixture out of the tank.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Catching Or Destruction (AREA)
- Nozzles (AREA)
- Safety Valves (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9510309A FR2738215B1 (fr) | 1995-09-01 | 1995-09-01 | Dispositif de remplissage du reservoir d'un pulverisateur de produits phytosanitaires |
FR9510309 | 1995-09-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0761534A1 true EP0761534A1 (de) | 1997-03-12 |
EP0761534B1 EP0761534B1 (de) | 1999-06-30 |
Family
ID=9482217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96401855A Expired - Lifetime EP0761534B1 (de) | 1995-09-01 | 1996-08-29 | Vorrichtung zum Befüllen eines Vorratsbehälters einer Versprühvorrichtung für phytosanitäre Produkte |
Country Status (5)
Country | Link |
---|---|
US (1) | US5727605A (de) |
EP (1) | EP0761534B1 (de) |
DE (1) | DE69603054T2 (de) |
ES (1) | ES2135191T3 (de) |
FR (1) | FR2738215B1 (de) |
Families Citing this family (2)
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2608373A (en) * | 1946-08-06 | 1952-08-26 | Bridgeport Brass Co | Filling apparatus for containers |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2053931A (en) * | 1934-11-03 | 1936-09-08 | Patent Dev Company Ltd | Pressure control valve |
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 |
-
1995
- 1995-09-01 FR FR9510309A patent/FR2738215B1/fr not_active Expired - Fee Related
-
1996
- 1996-08-29 EP EP96401855A patent/EP0761534B1/de not_active Expired - Lifetime
- 1996-08-29 DE DE69603054T patent/DE69603054T2/de not_active Expired - Lifetime
- 1996-08-29 ES ES96401855T patent/ES2135191T3/es not_active Expired - Lifetime
- 1996-08-30 US US08/705,612 patent/US5727605A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2608373A (en) * | 1946-08-06 | 1952-08-26 | Bridgeport Brass Co | Filling apparatus for containers |
Also Published As
Publication number | Publication date |
---|---|
DE69603054T2 (de) | 1999-10-21 |
DE69603054D1 (de) | 1999-08-05 |
FR2738215A1 (fr) | 1997-03-07 |
ES2135191T3 (es) | 1999-10-16 |
EP0761534B1 (de) | 1999-06-30 |
US5727605A (en) | 1998-03-17 |
FR2738215B1 (fr) | 1997-11-14 |
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