[go: up one dir, main page]

WO2002064263A1 - Robinet pour pistolet de lavage - Google Patents

Robinet pour pistolet de lavage Download PDF

Info

Publication number
WO2002064263A1
WO2002064263A1 PCT/DK2001/000101 DK0100101W WO02064263A1 WO 2002064263 A1 WO2002064263 A1 WO 2002064263A1 DK 0100101 W DK0100101 W DK 0100101W WO 02064263 A1 WO02064263 A1 WO 02064263A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
fluid
control means
face
longitudinal axis
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.)
Ceased
Application number
PCT/DK2001/000101
Other languages
English (en)
Inventor
Flemming Asp
Kenneth Christensen
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.)
ALTO DANMARK AS
Original Assignee
ALTO DANMARK AS
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 ALTO DANMARK AS filed Critical ALTO DANMARK AS
Priority to PCT/DK2001/000101 priority Critical patent/WO2002064263A1/fr
Publication of WO2002064263A1 publication Critical patent/WO2002064263A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3026—Gate valves; Sliding valves; Cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/04—Devices for relieving the pressure on the sealing faces for sliding valves

Definitions

  • the present invention relates to washing guns used in connection with cleaning, distribution of cleansing agents etc. in industry and more particularly to the design and functioning of a valve to be used in such guns.
  • valves to be used in washing guns are on the one hand to minimise that force which must be exerted by the users hand/fingers on the trigger mechanism in order to maintain the valve in an open state during operation of the washing gun and at the same time to ascertain, that if the trigger is released, for instance by the user unintentionally dropping the washing gun during operation hereof, the valve instantaneously assumes a closed state, thus avoiding possible damages to the surroundings caused by the washing fluid.
  • a valve of the above kind is disclosed in WO 98/47623 "Spray device with nozzle and valve", which valve comprises a tubular nozzle holder in the longitudinal direction through which a spindle can be displaced, the spindle being provided with a longitudinal, cylindrical bore receiving the washing fluid extending from one end of the spindle, and a similar longitudinal, cylindrical bore extending from the other end of the spindle and leading the fluid to the nozzle of the washer.
  • the above-mentioned two bores are separated from each other but are each connected to the circumferential surface of the spindle, so that with a certain position of the spindle relative to the nozzle holder a fluid passage can be established between the two bores via passages suitably provided in the surrounding tubular nozzle holder.
  • a compression spring biasing the nozzle in a direction away from the nozzle holder i.e. in the direction of the jet of fluid leaving the nozzle during operation of the washing gun.
  • the valve is activated by the user displacing the nozzle holder in the direction towards the nozzle, i.e. against the force from said compression spring.
  • fluid communication is established between the two bores in the spindle, and fluid is ejected from the nozzle.
  • the jet of fluid leaving the nozzle produces a reaction force on the spindle which force tends to compress the compression spring and thus keeping the valve in an open position as long as the user maintains his grip on the nozzle holder. If the user drops the washing gun, the compression spring is no longer being held in a compressed state, but returns rapidly to its original state, hence closing the valve.
  • a valve comprising a valve house with a longitudinal axis and provided with a fluid inlet, a fluid outlet, a control means for controlling the fluid flow between said inlet and said outlet positioned within said valve house, so that said control means can be displaced along said longitudinal axis, where said control means is characterised in that the resultant force acting on said control means in the direction of said longitudinal axis caused by the static pressure of the fluid present within said valve house is zero for any displacement of said control means within said valve house.
  • a valve to be used in a washing gun said valve essentially comprising a valve house subdivided into two chambers by a piston, which piston by the aid of a suitable trigger mechanism can be displaced in said valve house, such that this displacement causes the volume of one of said chambers to increase when the volume of the other chamber decreases and vice versa, where one of said chambers serves as an inlet chamber in communication with the supply of washing fluid and where there in said valve house is provided a transversal outlet opening from said valve house, such that when said trigger mechanism assumes an initial position the fluid passage from said inlet chamber to said transversal opening is completely blocked by said piston whereas said passage as the piston is being displaced away from said initial position in said valve house becomes gradually more open, thus providing increased flow of fluid from said inlet chamber to the nozzle of the washing gun, which nozzle is in fluid communication with said transversal opening, and where there is furthermore provided a fluid passage between said first and second chambers, which passage is independent of the displacement of
  • said valve furthermore comprises a trigger mechanism connecting the trigger, being positioned at a suitable place for instance on the hand grip of the washing gun, with said piston in said valve house, such that a displacement of said trigger in a first direction causes a displacement of said control means in that direction in the valve house which will increase the passage between said inlet chamber and said outlet, and where a movement of said trigger in the opposite direction will cause said control means to be displaced in the opposite direction, thereby decreasing the passage between said inlet chamber and said outlet.
  • a trigger mechanism connecting the trigger, being positioned at a suitable place for instance on the hand grip of the washing gun, with said piston in said valve house, such that a displacement of said trigger in a first direction causes a displacement of said control means in that direction in the valve house which will increase the passage between said inlet chamber and said outlet, and where a movement of said trigger in the opposite direction will cause said control means to be displaced in the opposite direction, thereby decreasing the passage between said inlet chamber and said outlet.
  • biasing means acting either on said control means or on said trigger mechanism or on both, such that the only force to be overcome by the hand/fingers of the user during activation of said trigger is caused by said biasing means and not by the static pressure of the washing fluid.
  • the only other forces to be overcome by the hand/fingers during operation are caused by friction between the fluid flowing through the control means during operation as well as by inevitable friction between movable parts of the valve.
  • figure 1 is a schematic representation of the functional principle of a first embodiment of the invention
  • figure 2a is a schematic representation of the functional principle of a second embodiment of the invention with the valve shown in a closed state;
  • figure 2b is a schematic representation of the functional principle of a second embodiment of the invention with the valve shown in an open state;
  • figure 3 is a first embodiment of the valve according to the invention operating accord- ing to the functional principle shown in figure 1 ;
  • figure 4a is a second embodiment of the valve according to the invention operating according to the functional principle shown in figure 2a, i.e. with the valve in the closed state; and figure 4b is the second embodiment of the valve according to the invention operating according to the functional principle shown in figure 2b, i.e. with the valve in an open state.
  • the valve according to this embodiment comprises essentially a tubular valve house 3, closed at one end and provided with an inlet 5 for washing fluid under a given static pressure from a suitable reservoir, not shown in the figure. Between said closed end face of the valve house 3 and the opposite end containing said inlet 5 there is in the circumferential wall of the valve house provided a lateral fluid outlet 6 for delivering the washing fluid to the nozzle of the washing gun (not shown).
  • the flow of fluid within the valve house 3 is controlled by means of a cylindrical piston 4, sealingly displaceable within the valve house in the longitudinal direction (X) hereof.
  • the piston 4 is provided with a longitudinal passage 8 connecting a first end face 9 of the piston 4 with a second end face 10 of the piston 4.
  • FIG. 1 there is in figure 1 shown a biasing means 12 schematically represented by a compression spring acting on the piston 4, thus biasing the piston 4 in a direction towards said initial position, in which position the flow of fluid between the inlet 5 and the outlet 6 is completely blocked.
  • the purpose of this biasing means 12 is to ensure, that if the washing gun during operation hereof is for instance incidentally dropped, the valve automatically closes, thereby preventing possible damage to the surroundings caused by the washing fluid.
  • the valve again comprises a tubular valve house 3 provided with the inlet 5 in one longitudinal end face of the valve house 3 and the outlet 6 provided in the opposite end face.
  • a tubular fluid control means 4 is located longitudinally dis- placeable with the aid of the trigger 7 and as in the first embodiment described in figure 1 acted upon by a biasing means 12 provided for the same purpose as before.
  • the control means 4 comprises two cylindrical portions 4' and 4", the first portion having an outer diameter corresponding to the inner diameter of the valve house 3, so that the control means 4 can slide sealingly within the valve house 3.
  • the second portion 4" of the control means 4 has a somewhat smaller diameter than the first portion 4', so that a circumferential passage 18 is obtained be- tween the outer surface of the second portion 4" and the corresponding inner surface of the valve house 3.
  • the control means 4 is furthermore provided with a central passage 13 communicating with said circumferential passage 18 through an opening 14.
  • a cylindrical extension 17 of the outlet 6 In the valve house 3 adjacent the outlet 6 there is provided a cylindrical extension 17 of the outlet 6, the outer diameter of said extension 17 being such that it corresponds to the inner diameter of the second portion 4" of the control means 4.
  • the second portion 4" is thus able to slide sealingly in the longitudinal direction over said extension 17.
  • the extension 17 ends in a wall 15, and between this wall 15 and the extension 17 there is provided an opening 16. It is understood that a number of openings 14 and 16 can be distributed circumferentially around the longitudinal axis X through the valve house 3 and control means 4.
  • the fluid path from the inlet 5 to the outlet 6 through the valve house 3 is established via the central passage 13, from this via the opening 14 to the circumferential passage 18 and from this passage 18 via the second opening 16 to the extension 17 and hence to the outlet 6 from the valve house 3.
  • This fluid path is shown in the blocked state in figure 2a, where the second portion 4" of the control means 4 blocks the second opening 16, and in an open state in figure 2b, where the second opening 16 is no longer blocked due to the control means 4 having in this state been displaced longitudinally in the direction indicated by the arrow A in the figure.
  • the fundamental principle of the invention i.e. that the resultant force caused by the static fluid pressure on the control means in the longitudinal direction should always remain zero is also complied with in this second embodiment of the invention due to the fact that the static forces acting on the end faces b1 and d in the longitudinal direction cancels as do the forces acting in the longitudinal direction on the end faces b2 and c2.
  • the forces to be overcome by the trigger is thus also in this embodiment the forces exerted on the control means 4 by the biasing means 12 and the various frictional forces between the valve house 3 and the control means 4 and between the control means 4 and the fluid flowing over those parts of the control means which forms part of the fluid path through the valve respectively.
  • valve house is in this embodiment at one longitudinal end hereof provided with an inlet chamber 11 against the inner end wall 21 of which the piston 4 is pressed by means of the biasing means 12, when the piston is located in the initial position, where the flow of fluid through the valve is blocked.
  • the end face of the piston opposite the inlet chamber 11 is provided with a cylindrical recess for accommodation of the compres- sion spring 12 acting as the biasing means.
  • the spring 12 is located in the spring chamber 19, which chamber is in fluid communication with the inlet chamber 11 through the central passage 13 through the piston 4.
  • the outlet 6 is provided via a circumferential outlet chamber 20 that serves to reduce the velocity of the fluid at the contact surfaces between the fluid and the piston 4.
  • the reduction of this velocity re- suits in reduced frictional forces between the fluid and the piston and hence a reduction of the force on the trigger 7 required to maintain the valve in a given open state.
  • FIG 4a and figure 4b there is finally shown a practical embodiment of the valve according to the functioning principle shown in figure 2a and figure 2b. Apart from minor structural modifications the functioning of this embodiment is explained with reference to figures 2a and 2b.
  • the length of the extension 17 of the outlet 6 is in this embodiment reduced compared to that of figure 2a and 2b, the extension being in this embodiment implemented as a groove cut in the end wall of the outlet portion of the valve house.
  • the end face c2' corresponding to c2 in figure 2a and 2b is inclined a certain angle relative to the plane perpendicular to the longitudinal axis X through the valve house, but the projection on this plane still corresponds to the area of the end face b2 so that the static forces acting on these to faces cancels.
  • the valve house is provided with a circumferential opening through the wall for engagement of the trigger with the control means 4', 4". A corresponding opening is of cause also provided in the valve house in the embodiment shown in figure 3 above.
  • valve valve house

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

La présente invention concerne un robinet destiné à être utilisé dans un pistolet de lavage, ledit robinet présentant une entrée destinée au liquide de lavage et une sortie destinée à être reliée à une buselure, et un mécanisme de détente permettant de commander l'écoulement de liquide à travers le robinet, le robinet présentant des moyens tels que la force nécessaire qui doit être exercée sur la détente par la main et les doigts de l'opérateur est indépendante de la pression statique du liquide de lavage fournie au pistolet de lavage, ce qui permet d'obtenir un fonctionnement plus facile, moins fatiguant pour les muscles de la main et des doigts de l'utilisateur, et tels que lorsque ladite force n'est plus exercée sur la détente, par exemple par l'opérateur qui laisse tomber involontairement le pistolet de lavage au cours du fonctionnement, l'écoulement de liquide de ladite chambre d'entrée vers ledit robinet est automatiquement interrompu, empêchant ainsi des dommages éventuels causés par le liquide de lavage.
PCT/DK2001/000101 2001-02-14 2001-02-14 Robinet pour pistolet de lavage Ceased WO2002064263A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DK2001/000101 WO2002064263A1 (fr) 2001-02-14 2001-02-14 Robinet pour pistolet de lavage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK2001/000101 WO2002064263A1 (fr) 2001-02-14 2001-02-14 Robinet pour pistolet de lavage

Publications (1)

Publication Number Publication Date
WO2002064263A1 true WO2002064263A1 (fr) 2002-08-22

Family

ID=8149425

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2001/000101 Ceased WO2002064263A1 (fr) 2001-02-14 2001-02-14 Robinet pour pistolet de lavage

Country Status (1)

Country Link
WO (1) WO2002064263A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013235A1 (de) * 1979-04-11 1980-10-23 Gervasoni Bono Kegelventil zur regelung des durchflusses eines unter druck stehenden fluids
US5492148A (en) * 1994-07-29 1996-02-20 T&S Brass And Bronze Works, Inc. Rinsing assembly with swivel actuating valve
NL1009442C2 (nl) * 1998-06-19 1999-12-21 Coenraadts Maschf Bv Stromingsregelaar.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013235A1 (de) * 1979-04-11 1980-10-23 Gervasoni Bono Kegelventil zur regelung des durchflusses eines unter druck stehenden fluids
US5492148A (en) * 1994-07-29 1996-02-20 T&S Brass And Bronze Works, Inc. Rinsing assembly with swivel actuating valve
NL1009442C2 (nl) * 1998-06-19 1999-12-21 Coenraadts Maschf Bv Stromingsregelaar.

Similar Documents

Publication Publication Date Title
EA001015B1 (ru) Распылительное устройство с форсункой и клапаном
AU601377B2 (en) Pressure container valve
KR100483466B1 (ko) 두방향밸브
US5092362A (en) On-off valves and pressure regulators for high-pressure fluids
CA2449216A1 (fr) Robinet de bouteille et filtre de controle a baionnette etablissant une protection contre les exces de debit
JP4161375B2 (ja) シャワー装置
CA2428162A1 (fr) Mecanisme de securite pour appareil distributeur
EP3681641B1 (fr) Pistolet de pulvérisation sans air avec ensemble de déclenchement amélioré
WO2005036035A3 (fr) Ensemble vanne
WO2019055144A1 (fr) Pistolet de pulvérisation simplifié sans air
CA2227377A1 (fr) Distributeur a plusieurs parties
US5971299A (en) Kitchen faucet side spray
CA2529296A1 (fr) Actionneur pour distributeur de materiau pressurise
RU2205704C2 (ru) Распылитель
US5311905A (en) Remote dump and safety valve
WO1998030859A1 (fr) Regulateur de pression de gaz pour lanceur de projectiles de peinture pourvu d'une soupape supplementaire d'evacuation de surpression
WO2002064263A1 (fr) Robinet pour pistolet de lavage
US20030222106A1 (en) Continuously shooting pneumatic grease gun structure
JP3923639B2 (ja) スプレー塗装装置
US4544133A (en) Shut-off valve for a sprayer
US4384674A (en) Self-cleaning nozzle
JP3506184B2 (ja) 塗装装置における圧力調整装置
JP6578230B2 (ja) 圧縮空気吐出装置
JP2002021132A (ja) 給水栓
EP0174401B1 (fr) Pulvérisateurs à commande manuelle

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 BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP