WO2006048536A1 - Epandeur de poudre basse pression avec debit controle - Google Patents
Epandeur de poudre basse pression avec debit controle Download PDFInfo
- Publication number
- WO2006048536A1 WO2006048536A1 PCT/FR2005/002697 FR2005002697W WO2006048536A1 WO 2006048536 A1 WO2006048536 A1 WO 2006048536A1 FR 2005002697 W FR2005002697 W FR 2005002697W WO 2006048536 A1 WO2006048536 A1 WO 2006048536A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- powder
- lance
- tank
- spreader device
- sealed
- Prior art date
Links
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
- B05B7/1413—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/006—Portable extinguishers which are permanently pressurised or pressurised immediately before use for the propulsion of extinguishing powder
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/76—Details or accessories
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
Definitions
- the present invention relates to improvements made to powder spreaders. More particularly, the invention relates to spreaders for combating the accidental spillage of chemicals dangerous to humans or the environment.
- powder spreaders including powder extinguishers. They are used to neutralize chemicals on the ground, such as fuels, oil, acid, base or other harmful chemical. A powder adapted to the needs is thus spread over the product in order to absorb it, and at least neutralize it.
- most of the known powder spreaders do not allow to spread a continuous and controlled spray of the powder, which may create dangerous projections when a large amount of powder expelled at high speed impinges on chemical spreading.
- Document FR 2 517 211 discloses, in particular, a powder spreader comprising a sealed tank with a conical base, a bottle containing a pressurized gas which is sent inside the tank by an appropriate pipe by actuating a lever located at the top of the tank. reservoir, and a flexible pipe terminated by a nozzle at its free end and intended for spreading the powder. There is also the presence of a valve disposed in the immediate vicinity of the nozzle so as to control the beginning and the end of the spreading of the powder.
- the bottle containing a gas under pressure is placed outside the tank and has an expansion valve, as well as pipe penetrations bringing the pressurized gas to an end placed at the axis of the conical bottom of the sealed tank.
- This spreader avoids any risk of clogging at the base of the tank through the associafion cone and free extremity ⁇ r "d" 'à7fiv ⁇ ⁇ 3 ⁇ "gâirsous' pressure, however, requires expensive regulator acting as a pressure regulator.
- the object of the present invention is to provide an inexpensive powder spreader capable of emitting a controlled powder of powder, and which thus makes it possible to overcome the problems encountered by known powder spreaders.
- the invention proposes a powder spreader device comprising a sealed tank with a conical bottom, a bottle containing a pressurized spray gas connected by a pipe to the volume of the tank, control means associated with the bottle, and a lance.
- the lance of elongated form thanks to its two stages of relaxation, allows to obtain a sufficient decrease in pressure to the exit of the lance.
- the speed of the powder is thus controlled, which makes it possible to obtain a "soft" and continuous jet (without variation of flow), without resorting to a pressure reducer.
- the lance is connected to the tank via a pipe with the interposition of a blower able to actuate the spreading of the powder.
- the blower allows it to act directly on the powder outlet of the lance.
- the blower comprises a first valve to allow the passage of the powder through the blower and a control of the first valve.
- the handle acts directly on the valve which opening is traversed by the powder under pressure.
- the first expansion stage of the lance makes the interface with the blower and comprises a substantially tubular shaped coupling, the part of which is intended to be inserted into the lance comprises a cylindrical pierced with at least two holes in its running part and closed at its free end in order to force the powder to enter the lance through the holes:
- This first connection ensures a first pressure drop and helps to channel the powder towards the elongated lance and provides a first realignment of the powder jet.
- the second expansion stage is located in the vicinity of the free end of the elongate lance and comprises a transverse wall pierced with a slot-shaped orifice.
- FIG. 1 is an overall view of a powder spreader according to the invention
- FIG. 2 is a sectional view of the reservoir of the invention.
- powder spreader according to the invention Figure 3 is a view of the blow gun and the elongate lance
- Figure 4 is a view of the first expansion stage
- - Figure 5 is a view of the second expansion stage.
- the spreader comprises a tank 1 which is closed at its base by an outer skirt 7 which extends the cylindrical portion of the tank 1.
- This tank further comprises at its top an opening 1a sealed by a head 9 (clamping means in the form of bolts 2a and 2b).
- This head 9 also carries control means 20 in the form of a lever, allowing the percussion through the head 9 of a bottle 2 containing a pressurized spray gas (not shown in Figure 1).
- the percussion (that is to say the perforation) of the bottle 2 releases the gas through the movement of the valve 21.
- This spray gas is thus sent inside the tank to allow its pressurization, and thus promote the out of the powder and spreading it.
- the pressurized gas bottle can be located outside the tank 1. In both cases, the bottle 2 is connected by a pipe to the volume of the tank 1.
- the head further carries a tubing 15 through which the powder exits the reservoir when pressurized.
- This tubing 15 is connected to a pipe 3 in a sealed manner.
- the lance 10 is connected to the tank 1 via the pipe 3, with the interposition of a blower which allows to operate the spreader.
- the pipe 3 is connected to the blower 6 by means of a sealing connection 4.
- the blower 6 comprises a control, represented in the form of a handle 6a in FIGS. 1 and 2, and allows the opening of another flap (no shown) which thus allows the start of the powder outlet, once the user has actuated the command.
- the valves of the powder spreader device according to the invention can advantageously be replaced by valves controlled respectively for the control means 20 and the control 6a.
- the blower 6 is also connected to a lance 10 of elongate shape comprising at each of its ends connectors 11 and 12 for relaxing the powder passing through them.
- a first connector 11 provides the interface between the blower 6 and the elongate lance 10.
- This first expansion stage constitutes a first pressure drop for the powder jet passing through it, and ensures a realignment of the latter.
- the second expansion stage 12 imposes a second pressure drop with the powder jet passing through it, and thus makes it possible to obtain at the outlet of the elongated lance 10 a controlled flow rate, and a very gentle emission of the powder.
- FIG. 2 A sectional view of the reservoir is shown in FIG. 2.
- the actuation of the control means 20 carried by the head 9 makes it possible to raise the valve 21 now closed the bottle 2. Once the valve has been raised, the pressurized spray gas can escape from the bottle 2 and flow through the conduit 27 to the conical bottom 5 of the tank.
- the combination of the conical bottom 5 and the conduit 27 for the inlet of the pressurized gas is taken from document FR 2 517 211.
- the tank has in its part lower a conical bottom 5 on which is screwed in the outer part an outer skirt 7 allowing the assembly to present a flat bottom.
- the pressurized gas can be nitrogen or dêTarg ⁇ n fout or other suitable gas to a powder spreader.
- the gas thus released from the bottle 2 exits the lower end of conduit 27 in the middle portion of conical bottom 5 of the tank 1. Because the bottom of the tank is tapered, there are only slight risks for the powder to adhere to the walls of the tank.
- the conical bottom 5 thus constitutes a central funnel around the free end of the duct 27 ensuring the diffusion of the gas under pressure.
- a pipe 3 provides the connection between the outlet of the tank 1 and the blower 6.
- the lance is connected to the tank 1 via a pipe, flexible or not, with interposition of a blower 6.
- This blower 6 is able to let the powder pass.
- it comprises a first valve, and a control, in the form of a handle 6a in the example of Figure 1, and which allows to actuate the spreading of the powder.
- blower 6 and lance 10 can be connected directly to the outlet of the tank 1.
- FIG. 3 shows an overall view of the blower 6, provided with its control 6a, as well as of the elongate lance 10, comprising the first expansion stage 11 and the second expansion stage 12.
- the first expansion stage 11 of the lance 10 provides the interface with the blower. It is arranged in the form of a connection between the blower 6 and the lance 10, and represented in FIG. 4. This first expansion stage is intended to break the jet of powder at the outlet of the blower 6, and provides a first relaxation of the pressure.
- This first expansion stage is presented " sôùs " the form of a connection 11 of substantially tubular shape. In a preferred embodiment shown in FIG. 4, this connection 11 is in the form of shape of two cylinders 11a and 11b respectively of a first and second outer diameters, and connected to each other by a ring 11c of a larger diameter.
- the first cylinder 11a is intended to cooperate with the blower 6, while the second cylinder 11b is intended to cooperate with the lance 10, the ring 11c coming between the blower 6 and the lance 10.
- the two cylinders 11a and 11b, as well as the ring 11c are recessed in their central part in order to let the powder pass.
- the free end (which is inside the lance) of the cylinder 11b is closed.
- the current portion of this cylinder is pierced with at least two perpendicular and through holes 111 and 112 (thus constituting openings for the passage of the powder) preferably circular diameters of 2 to 4 mm, and preferably 2.5 to 3.5 mm.
- This closed end 110 acts as a direct obstacle to the propagation of the powder. It thus makes it possible to force the passage of the powder through the openings 111 and 112, and provides a better pressure relief. These two openings also make it possible to force the passage of the powder in the space between the cylinder 11b and the inner wall of the lance, by projecting the powder through the holes 111 and 112 directly towards the inner wall and in a centripetal direction by report to the main direction of propagation. The power of the jet is thus broken thanks to the redirection towards the inner walls of the lance. These two openings may preferentially be diametrically opposed on the cylinder 11b.
- the powder is thus projected and channeled along the inner walls of the lance 10, after the outlet of the connector 11 through the two openings 111 and 112.
- the lance must be of sufficient length to allow rectification of the powder jet. It is of a length of between 100 mm and 500 mm, and preferably of a length of between 150 mm and 350 mm. It has an internal diameter of between 10 and 30 mm and an external diameter of between 15 and 35 mm, preferably its internal diameter is 20 mm and its external diameter 25 mm.
- the read ⁇ ⁇ ⁇ afîb7 ⁇ 7éferé ETIE ⁇ ⁇ th ⁇ Other materials may however be considered.
- the second expansion stage 12 is shown in FIG. present in the form of a tabular connection, open in its central portion to a transverse wall which is pierced with a slot-shaped orifice 12a.
- the powder arriving at the outlet of the lance 10 enters the hollow central portion of the connector 12 and then opens into the slot 12a in order to create a powder jet at the outlet of the substantially flat lance.
- the slot In order to obtain such a jet, the slot must have dimensions such that its depth P is greater than its height H.
- the device described allows to create a low pressure flat jet, operable by means of the gun, and its control, for a uniform and homogeneous surface application of the powder (c '). that is to say without abrupt variation of the flow) which thus avoids any dangerous chemical projection during the contact of the powder with the chemical spreading.
- the two stages of relaxation successively make it possible to create pressure losses contributing to the lowering of the pressure of the powder along its path, and make it possible to redirect the jet of powder in order to break it and thus to obtain at the exit of the lance a homogeneous stream, substantially uniform and flat, and relatively low speed.
- the two pressure relief stages 11 and 12 are suitable for lowering the exit speed of the powder.
- the expansion and the speed of exit of the powder are a function of the length of the lance and the shape of the two stages of relaxation.
Landscapes
- Nozzles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2585845A CA2585845C (fr) | 2004-10-29 | 2005-10-27 | Epandeur de poudre basse pression avec debit controle |
CN2005800373082A CN101056679B (zh) | 2004-10-29 | 2005-10-27 | 低压控流式粉末喷射器 |
US11/718,145 US8418775B2 (en) | 2004-10-29 | 2005-10-27 | Low-pressure flow-controlled powder spreader |
DE602005005081T DE602005005081T2 (de) | 2004-10-29 | 2005-10-27 | Durchflussgeregelter niederdruck-pulververteiler |
EP05815116A EP1804926B1 (fr) | 2004-10-29 | 2005-10-27 | Epandeur de poudre basse pression avec debit controle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0411599A FR2877240B1 (fr) | 2004-10-29 | 2004-10-29 | Epandeur de poudre basse pression avec debit controle |
FR0411599 | 2004-10-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006048536A1 true WO2006048536A1 (fr) | 2006-05-11 |
Family
ID=34951214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/002697 WO2006048536A1 (fr) | 2004-10-29 | 2005-10-27 | Epandeur de poudre basse pression avec debit controle |
Country Status (9)
Country | Link |
---|---|
US (1) | US8418775B2 (fr) |
EP (1) | EP1804926B1 (fr) |
CN (1) | CN101056679B (fr) |
AT (1) | ATE387248T1 (fr) |
CA (1) | CA2585845C (fr) |
DE (1) | DE602005005081T2 (fr) |
ES (1) | ES2303284T3 (fr) |
FR (1) | FR2877240B1 (fr) |
WO (1) | WO2006048536A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9302128B2 (en) * | 2011-10-25 | 2016-04-05 | Kidde Technologies, Inc. | Automatic fire extinguishing system with internal dip tube |
CN102940945B (zh) * | 2012-12-07 | 2015-12-09 | 北京北机机电工业有限责任公司 | 一种用于灭火器的气粉搅拌装置 |
CN103432701A (zh) * | 2013-09-05 | 2013-12-11 | 公安部天津消防研究所 | 超细干粉自动灭火装置 |
CN106492379A (zh) * | 2016-12-16 | 2017-03-15 | 国网湖南省电力公司 | 一种手提式恒压细水雾灭火器 |
CN108007268A (zh) * | 2017-08-26 | 2018-05-08 | 新疆宏开电子系统集成有限公司 | 高压储能式烟雾非杀伤性武器 |
CN108057463A (zh) * | 2017-12-19 | 2018-05-22 | 孟令航 | 实验室危险化学品管理装置 |
JP2019176896A (ja) * | 2018-03-30 | 2019-10-17 | 能美防災株式会社 | 高粘度液体用タンク |
US20200054907A1 (en) | 2018-08-14 | 2020-02-20 | Kidde Technologies, Inc. | Fire extinguishing agent nozzle structure |
CN113973547A (zh) * | 2021-10-29 | 2022-01-28 | 宁国市东南木纤维科技有限公司 | 一种用于墙面绿化的木纤维喷枪及其喷播机 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2421632A1 (fr) * | 1977-10-24 | 1979-11-02 | Commissariat Energie Atomique | Extincteur a poudre |
FR2517211A1 (fr) * | 1981-11-30 | 1983-06-03 | Desautel Sa Usines | Perfectionnements aux epandeurs de poudre et notamment aux extincteurs |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1987785A (en) * | 1930-08-11 | 1935-01-15 | Gas Fire Extinguisher Corp Du | Fire extinguisher container |
US3251420A (en) * | 1964-04-20 | 1966-05-17 | Fire Guard Corp | Fire extinguisher with bottom mounted cartridge |
JPS4952499A (fr) * | 1972-09-25 | 1974-05-21 | ||
US3814329A (en) * | 1972-12-04 | 1974-06-04 | J Clark | Pressure reducing nozzles for pressure guns |
FR2495483A3 (en) * | 1980-12-09 | 1982-06-11 | Sp Lab | Fire extinguisher using powder spray - has valve seat in end of nozzle sliding on supply tube against spring |
SE468403B (sv) * | 1990-01-17 | 1993-01-11 | Dart Engineering Ag | Anordning vid kopplingsdel som innefattar tryckreduceringsorgan |
US5368237A (en) * | 1992-11-23 | 1994-11-29 | Nordson Corporation | Power coating guns with improved spray nozzles and improved method of power coating |
US5988527A (en) * | 1997-11-21 | 1999-11-23 | Alosi; Victor Francis | Airbrush adapter for slow speed fine line detail |
US20030038193A1 (en) * | 2000-07-11 | 2003-02-27 | Rehman William R. | Unipolarity powder coating systems including improved tribocharging and corona guns |
DE202005012863U1 (de) * | 2005-08-12 | 2005-10-27 | J. Wagner Ag | Elektrodenhalter für eine Pulversprühvorrichtung |
-
2004
- 2004-10-29 FR FR0411599A patent/FR2877240B1/fr not_active Expired - Fee Related
-
2005
- 2005-10-27 DE DE602005005081T patent/DE602005005081T2/de active Active
- 2005-10-27 CA CA2585845A patent/CA2585845C/fr active Active
- 2005-10-27 US US11/718,145 patent/US8418775B2/en active Active
- 2005-10-27 AT AT05815116T patent/ATE387248T1/de not_active IP Right Cessation
- 2005-10-27 WO PCT/FR2005/002697 patent/WO2006048536A1/fr active IP Right Grant
- 2005-10-27 ES ES05815116T patent/ES2303284T3/es active Active
- 2005-10-27 EP EP05815116A patent/EP1804926B1/fr active Active
- 2005-10-27 CN CN2005800373082A patent/CN101056679B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2421632A1 (fr) * | 1977-10-24 | 1979-11-02 | Commissariat Energie Atomique | Extincteur a poudre |
FR2517211A1 (fr) * | 1981-11-30 | 1983-06-03 | Desautel Sa Usines | Perfectionnements aux epandeurs de poudre et notamment aux extincteurs |
Also Published As
Publication number | Publication date |
---|---|
US8418775B2 (en) | 2013-04-16 |
CA2585845C (fr) | 2012-12-04 |
CN101056679A (zh) | 2007-10-17 |
EP1804926A1 (fr) | 2007-07-11 |
DE602005005081T2 (de) | 2009-02-26 |
ATE387248T1 (de) | 2008-03-15 |
US20090145982A1 (en) | 2009-06-11 |
CA2585845A1 (fr) | 2006-05-11 |
FR2877240B1 (fr) | 2007-01-26 |
CN101056679B (zh) | 2012-11-28 |
DE602005005081D1 (de) | 2008-04-10 |
ES2303284T3 (es) | 2008-08-01 |
FR2877240A1 (fr) | 2006-05-05 |
EP1804926B1 (fr) | 2008-02-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1804926B1 (fr) | Epandeur de poudre basse pression avec debit controle | |
EP0109361A1 (fr) | Régulateur de poussée | |
FR2591331A1 (fr) | Dispositif de distribution de fractions dosees d'un produit contenu dans un recipient pressurise | |
EP2416895B1 (fr) | Dispositif de nettoyage pour pistolet de pulvérisation | |
WO2007006987A1 (fr) | Extincteur a brouillard de liquide et son utilisation | |
FR2765661A1 (fr) | Appareil et vanne cryogenique pour la fourniture d'un liquide cryogenique, et installation correspondante de conditionnement d'un produit | |
EP1867396B1 (fr) | Dispositif pistolet à peinture utilisant des cartouches aérosols | |
EP0608176A1 (fr) | Micro-diffuseur pour brouillard de particules liquides | |
EP2879811A1 (fr) | Dispositif de nettoyage pour pistolet de pulverisation | |
FR3030464A1 (fr) | Dispositif distributeur de fluide et procede de fabrication d’un tel dispositif | |
EP1497201B1 (fr) | Distribution de produit fluide | |
WO2021014070A1 (fr) | Dispositif adaptatable sur un souffleur | |
EP2775142A1 (fr) | Dispositif d'éjection de matière granuleuse à venturi | |
EP1149633B1 (fr) | Appareil pulvérisateur | |
EP0906889B1 (fr) | Dispositif d'emplissage de bouteilles avec mise à niveau du liquide dans lesdites bouteilles, sans perte de liquide | |
EP0284512B1 (fr) | Dispositif d'alimentation par gravité pour pistolet de pulvérisation de peinture ou de produit analogue | |
WO2004081484A1 (fr) | Dispositif de projection de materiaux legers tels que des confettis ou analogues et/ou des emulsions telles que de la mousse, de la neige ou analogue | |
FR2707265A1 (fr) | Dispositif de distribution de liquide, en particulier sous forme aérosol. | |
FR2547644A1 (fr) | Dispositif de lubrification d'air comprime | |
FR2699425A1 (fr) | Dispositif pour injecter un gaz, notamment de l'air, dans un courant de liquide, en particulier dans une solution destinée à mousser. | |
EP0655282A1 (fr) | Appareil de nébulisation de liquides odoriférants | |
FR2694500A1 (fr) | Nébuliseur polyvalent pour le traitement des voies respiratoires. | |
FR2580796A1 (fr) | Disperseur d'autodefense portable | |
FR2905879A1 (fr) | Appareil de projection de produits pateux ou liquides. | |
BE382619A (fr) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2585845 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580037308.2 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005815116 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2005815116 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11718145 Country of ref document: US |
|
WWG | Wipo information: grant in national office |
Ref document number: 2005815116 Country of ref document: EP |