WO2004109121A1 - Système de distribution de produits chimiques d'extrémité de tuyau - Google Patents

Système de distribution de produits chimiques d'extrémité de tuyau Download PDF

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Publication number
WO2004109121A1
WO2004109121A1 PCT/US2004/016599 US2004016599W WO2004109121A1 WO 2004109121 A1 WO2004109121 A1 WO 2004109121A1 US 2004016599 W US2004016599 W US 2004016599W WO 2004109121 A1 WO2004109121 A1 WO 2004109121A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
recited
storage tank
flow passage
chemical
Prior art date
Application number
PCT/US2004/016599
Other languages
English (en)
Inventor
Daniel Gilmore
Original Assignee
E-Z Flo Injection Systems, Inc.
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
Priority claimed from US10/448,726 external-priority patent/US6805149B1/en
Application filed by E-Z Flo Injection Systems, Inc. filed Critical E-Z Flo Injection Systems, Inc.
Publication of WO2004109121A1 publication Critical patent/WO2004109121A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids

Definitions

  • This invention relates generally to chemical delivery systems and, more particularly, to a hose-end chemical delivery system.
  • Hose-end chemical delivery systems for spraying chemicals such as insecticides, herbicides, and fertilizers are known in the art.
  • U.S. Patent No. 4,475,689 is known in the art.
  • variable dilution ratio hose-end sprayer having a rotatable selector dial.
  • the orifices are adapted to intersect an output fluid passageway that extends from a fluid container to a mixing chamber.
  • the mixing chamber is provided for mixing selected amounts of fluid from the fluid container with water that enters the mixing chamber from the hose to which the
  • each orifice of the rotatable selector dial is proportioned to provide a desired final dilution ratio of the fluid to be siphoned from the fluid container.
  • the orifices extend through the selector dial and lie on a circle concentric with the axis of the selector dial.
  • the orifices also have a radius selected to intersect the axis of the output fluid passageway.
  • An improved chemical delivery system having a body defining a main fluid flow passage through which a fluid passes and a storage tank for holding a chemical.
  • An inlet nozzle delivers a quantity of the fluid in the main fluid flow passage
  • an outlet nozzle is used to return a quantity of the fluid mixed with the chemical from the storage tank to the main fluid flow passage.
  • An adjustment dial having a plurality of orifices of varying diameter that are capable of being individually placed into relation with the inlet nozzle may be used to control the amount of fluid that enters the inlet nozzle from the main fluid flow passage.
  • an outlet nozzle trap in fluid communication with a vent port of the outlet nozzle may be placed in fluid communication with a fill control port of the inlet nozzle. The fill control port is used to direct fluid to the outlet nozzle trap to control venting of air from the storage tank to the main fluid flow passage via the vent port.
  • Figure 1 illustrates a cross-sectional view of an exemplary hose-end chemical delivery system constructed in accordance with the principles of the subject invention
  • Figure 2 illustrates a top view of an exemplary cap of the hose-end chemical delivery system of Figure 1;
  • Figure 3 illustrates a top view of an exemplary selector dial of the hose-end chemical delivery system of Figure 1
  • Figure 4 illustrates a cross-sectional view of an exemplary inlet nozzle of the hose-end chemical delivery system of Figure 1;
  • Figure 5 illustrates a cross-sectional view of an exemplary outlet nozzle of the hose-end chemical delivery system of Figure 1;
  • Figure 6 illustrates a side view of an exemplary output dip tube screen of the hose- end chemical delivery system of Figure 1;
  • Figure 7 illustrates a top view of the dip tube screen of Figure 6; and Figure 8 illustrates a cross-sectional view of a further exemplary hose-end chemical delivery system constructed in accordance with the principles of the subject invention.
  • hose-end chemical delivery system 50 comprising a cap 26 and a storage tank 24.
  • the storage tank 24 is adapted to contain a chemical to be sprayed, for example, a water soluble fertilizer.
  • the exterior of the storage tank 24 may be provided with threads 58 adapted to mate with threads 56 formed on the interior of the cap 26. Additional means for securing the storage tank 24 to the cap 26, such as providing a snap-fit connection, are also contemplated.
  • the chemical delivery system 50 is adapted to be connected to a source of fluid, such as water.
  • the cap 26 may be provided with a threaded, female connector 3 that is adapted to mate with a threaded, male connector of a conventional garden hose.
  • the connector 3 is attached to the remaining components of the cap 26 by means of a swivel connector.
  • a seal 2 may be provided to prevent fluid leakage from the area of any such swivel attachment.
  • a vacuum breaker 18 may be provided within the main fluid flow passage formed in the cap 26.
  • the main fluid flow passage extends between the input, illustrated as connector 3, and an output.
  • the illustrated output comprises a threaded, male connector 8 adapted to releasably mate with a spray head 27.
  • the vacuum breaker 18 operates in connection with a vacuum breaker exhaust 4, formed in the cap 26 adjacent to the vacuum breaker 18, that provides a vent to the atmosphere if a pressure reversal occurs.
  • a seal 17 may be positioned between the vacuum breaker 1,8 and the interior of the main fluid flow passage to prevent leakage of fluid through the vacuum breaker exhaust 4.
  • the cap 26 may further include a shut off valve 5, illustrated in
  • the shut off valve 5 allows a user to manually control the amount of fluid that is permitted to flow through the main fluid passage of the cap 26.
  • the shut off valve 5 may be a ball valve such as illustrated in the figures, a pistol grip lever actuated valve (e.g., like a gas pump valve), or the like without limitation.
  • a seal 6 may be positioned adjacent to the shut off valve 5 to prevent fluid leakage.
  • the flow restrictor 7 functions to restrict the amount of fluid that flows through the main fluid passage to thereby create back pressure that further functions to divert fluid into the storage tank 24 and to siphon fluid from the storage tank 24.
  • fluid diverted from the main fluid passage is directed to an inlet nozzle 12 that is in fluid communication with the main fluid passage.
  • the inlet nozzle 12 may be in direct fluid communication with the main fluid flow passage as illustrated in Fig. 8.
  • the fluid communication between the main fluid passage and the inlet nozzle 12 may be via an orifice formed in the main fluid passage on the upstream side of the flow restrictor 7, an upper inlet nozzle 13, and an adjustment dial 15.
  • the adjustment dial 15 may be provided as a means for allowing a user to manually adjust the amount of fluid that is permitted to flow into the inlet nozzle 12 (i.e., to thereby control the rate of chemical mixing).
  • the adjustment dial 15 includes a plurality of orifices 28 having various diameters (e.g., having diameters that range from approximately 0.030 to 0.060 inches) that may be selectively disposed between the upper nozzle 13 and the inlet nozzle 12.
  • the plurality of orifices 28 are arranged around the adjustment dial 15 such that the orifices 28 lie on a circle concentric with the axis of the adjustment dial 15.
  • the orifices 28 also have a radius selected to intersect the axis of the nozzles 12 and 13.
  • Associated with each of the orifices 28 may be a setting indicator 25 that is visible to the user such that the user may discern which of the orifices is presently associated with the inlet nozzle 12.
  • the adjustment dial 15 is adapted to be rotatable.
  • the adjustment dial 15 may be provided with a detent mechanism. While not intended to be limiting, the illustrated detent mechanism is comprised of indentations 29 arranged in a concentric circle about the dial 15 that cooperate with a spring loaded pin 16 that is mounted within the cap 26.
  • the adjustment dial 15 may be rotated about a retaining screw 14 that is adapted to mate with an adapter plate 9 that is provided to maintain the adjustment dial 15, inlet nozzles 12 and 13, and an outlet nozzle 10 within the cap 26.
  • a seal 33 may be provided between the adjustment dial 15 and the inlet nozzle 12 to prevent fluid leakage.
  • a seal 34 may also be positioned between the inlet nozzle 12 and the adapter plate 9.
  • fluid is directed from the main fluid passage to the adjustment dial 15 and, in turn, the input nozzle 12 via a top inlet nozzle 13.
  • Seals 31 and 32 may be used to prevent leakage of fluid from areas adjacent to this flow passage.
  • the dual seals 31 and 32 associated with the top inlet nozzle 13 (as well as the dual seals 33 and 34 associated with the nozzle 12) are especially useful to prevent leakage when the adjustment dial 15 is being rotated during those times that the system 50 is under pressure from the source of fluid.
  • the inlet nozzles (as well as the outlet nozzle) be designed so as to add increasingly positive pressure to the seals as pressure is increased.
  • the top inlet nozzle 13 may include a pressure chamber 30 and the lower inlet nozzle 12 may include a pressure chamber 34.
  • Optional cavities 51 and 53 may be formed in the upper inlet nozzle 12 and lower inlet nozzle 14, respectively, to provide an additional seal when the adjustment dial 15 is being rotated while the system is under fluid pressure.
  • the pressure chamber 30 communicates with fluid in the main flow line such that flow line pressure captured in the pressure chamber 30 forces the top inlet valve to move the top inlet lower seal 32 into further engagement against the adjustment dial 15.
  • the pressure chamber 34 communicates with pressure in the storage tank 24 such that storage tank pressure captured in the pressure chamber 34 forces the lower inlet valve to move the bottom inlet nozzle seal 33 against the adjustment dial. It will be appreciated that, as pressure increases in either the main flow line or the storage tank, a stronger seal is created against the adjustment dial 15.
  • an inlet dip tube 19 that extends towards the bottom of the storage tank 24, is connected to a dip tube connection 36 of the inlet nozzle 12.
  • an agitation nozzle 20 is further connected to end of the inlet dip tube 19 such that fluid exiting the agitation nozzle 20 will cause chemical contained within the storage tank 24 to mix with fluid that has been delivered to the storage tank 24.
  • plural agitation nozzles 20 may be used and arranged, for example, circumferentially about the end of the inlet dip tube 19.
  • a fluid control port 47 is provided.
  • the fluid control port 47 may be formed as part of the inlet dip tube 19 as illustrated in Fig. 8 and/or as part of the inlet nozzle 12 as illustrated in Fig. 1.
  • This manner of delivering fluid to the top of the storage tank 24 helps to stabilize the chemical solution to create a more even injection rate.
  • this manner of delivering fluid to the storage tank 24 helps to clear the expansion tank 24 of any dye when the chemical has been exhausted during spraying. This is particularly useful since it eliminates the situation where a user thinks chemical remain in the storage tank 24 just because the fluid remains dyed.
  • the control port 47 is optional.
  • the storage tank 24 may be provided with a domed bottom into which the nozzle 20 extends. In this manner, the agitation caused by fluid exiting the nozzle 20 occurs at the bottom most portion of the storage tank 24. Additionally, the domed bottom improves the strength of the storage tank 24 in a pressurized environment.
  • a ring 48 may be provided that is adapted to mate with the bottom of the storage tank 24, for example, by being snap-fit thereto.
  • the storage tank 24 may include a portion 24a that is positioned above the domed bottom that generally protrudes inwardly as is illustrated in Fig. 8.
  • the portion 24a functions to provide a more steep tunneling effect to the storage tank 24 to prevent the settling of chemical against the interior surface of the storage tank 24 away from the nozzles 20.
  • an outlet nozzle 10 For use in venting air during filling of the storage tank 24 and for returning fluid mixed with chemical to the main fluid passage once the filling process is complete, an outlet nozzle 10, having a mounted outlet dip tube 23, is placed in fluid flow communication with the main fluid passage via an orifice positioned in the main fluid passage located downstream of the flow restrictor 7.
  • the outlet nozzle 10, an example of which is illustrated in Fig. 5, may have a first body section and a second body section that defines a fluid flow passage 40 that is in fluid communication with the main fluid passage.
  • the first body section of the outlet nozzle 10 may be disposed between the main fluid passage and the adapter plate 9 and dual seals 41 and 42 may be provided to prevent fluid leakage from areas where the elements meet.
  • the second body section of the outlet nozzle 10 extends from the adapter plate 9 towards the storage tank 24 and carries an outlet nozzle trap 11.
  • the top of the outlet nozzle trap 11 engages the bottom of the adapter plate 9.
  • the outlet nozzle 10 may also be placed in direct fluid communication with the main fluid passage as illustrated in Fig. 8.
  • the outlet dip tube 23 may be disposed apart from the inlet dip tube 19, as illustrated in Fig. 1, or may disposed within the interior of the inlet dip tube 19, as illustrated in Fig. 8. In the latter instance, both the inlet dip tube 19 and the outlet dip tube 23 may pass through the outlet nozzle trap 11.
  • the outlet nozzle trap 11 preferably has a perforated opening 43 leading to the interior of the tank 24.
  • the fill control port 35 serves to direct fluid to the outlet nozzle trap 11 via the perforated opening 43 as is illustrated in Fig. 1.
  • the fill control port 35 may lead directly to the interior of the outlet nozzle trap.
  • the fill control port 35 may be formed as part of the inlet nozzle 12 or be formed adjacent to the inlet nozzle 12 as is illustrated by way of example in Fig. 8.
  • the diverted fluid inhibits the venting of air from the storage tank 24 via a vent port 44 associated with the outlet nozzle 10.
  • the sizing of the fill control port 35 relative to the size of the outlet nozzle vent 44 will regulate the amount of air capable of being vented via the vent 44 which, in turn, regulates the speed by which the storage tank 24 fills.
  • controlling the fill speed in turn controls the initial injection rates, mixing, etc.
  • the action between the fill control port 35 and the vent port 44 helps to eliminate plugging and spurting. For example, if back pressure develops due to air resistance at the screen 21, the system will function to automatically force more air or fluid out of port 44. Without such a system, back pressure would develop until enough force was created to push the resisting element through the screen 21 which, when the release occurred, would cause spurting. If the resisting element were not forced through the screen, a plug would occur.
  • fluid mixed with chemical may now be siphoned into the main fluid passage from the storage tank 24.
  • fluid is drawn into the outlet dip tube 23 via a bottom outlet nozzle 22 that is attached to the bottom of the outlet dip tube 23.
  • Injection of the fluid mixed with chemical into the main fluid passage at a time before the tank is full is made possible by the back pressure created by means of the fluid directed into the outlet nozzle trap 11.
  • a dip tube screen 21 illustrated in Figs. 6 and 7, having a non-clogging design.
  • the screen 21 comprises a screen meshing 46 (for example, of polypropylene) attached to vertical support rods 45.
  • the relationship of the vertical support rods 45 is such that the narrowest point between adjacent vertical support rods 45 is at the point where the support rods 45 engage the screen meshing 46. In this manner, anything that is capable of passing through the support rods 45 at their outermost points of association will be able to pass through into the interior of the screen 21.
  • the outlet bottom nozzle 22 extends into the middle of the screen 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention porte sur un système de distribution de produits chimiques comportant un corps délimitant un passage d'écoulement d'un fluide principal, et un réservoir de stockage d'un produit chimique. Une buse d'entrée dirige une quantité du fluide principal via ledit passage dans le réservoir de stockage où elle se mélange avec le produit chimique, tandis qu'une buse de sortie renvoie une quantité de fluide mélangé vers ledit passage.
PCT/US2004/016599 2003-05-30 2004-05-25 Système de distribution de produits chimiques d'extrémité de tuyau WO2004109121A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/448,726 2003-05-30
US10/448,726 US6805149B1 (en) 2001-07-02 2003-05-30 Hose-end chemical delivery system

Publications (1)

Publication Number Publication Date
WO2004109121A1 true WO2004109121A1 (fr) 2004-12-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/016599 WO2004109121A1 (fr) 2003-05-30 2004-05-25 Système de distribution de produits chimiques d'extrémité de tuyau

Country Status (1)

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WO (1) WO2004109121A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009027422A2 (fr) * 2007-08-28 2009-03-05 Ge Healthcare Limited Buse pour polariseur à polarisation nucléaire dynamique
US10138110B2 (en) 2015-09-21 2018-11-27 S. C. Johnson & Son, Inc. Attachment and system for mixing and dispensing a chemical and diluent

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6604546B1 (en) * 2001-07-02 2003-08-12 E-Z Flo Injection Systems, Inc. Hose-end chemical delivery system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6604546B1 (en) * 2001-07-02 2003-08-12 E-Z Flo Injection Systems, Inc. Hose-end chemical delivery system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009027422A2 (fr) * 2007-08-28 2009-03-05 Ge Healthcare Limited Buse pour polariseur à polarisation nucléaire dynamique
WO2009027422A3 (fr) * 2007-08-28 2009-09-03 Ge Healthcare Limited Buse pour polariseur à polarisation nucléaire dynamique
CN101790692A (zh) * 2007-08-28 2010-07-28 通用电气健康护理有限公司 用于动态核自旋极化(dnp)的极化器的管嘴
RU2475770C2 (ru) * 2007-08-28 2013-02-20 Джи-И Хелткер Лимитед Устройство и установочный кожух для растворения и выведения замороженного поляризованного образца и контейнер для содержания такого образца
AU2008292171B2 (en) * 2007-08-28 2014-06-05 Ge Healthcare Limited Improvements relating to nozzles for frozen polarized materials
CN104076308A (zh) * 2007-08-28 2014-10-01 通用电气健康护理有限公司 用于溶解冻结的极化样本的装置及其用途
US10138110B2 (en) 2015-09-21 2018-11-27 S. C. Johnson & Son, Inc. Attachment and system for mixing and dispensing a chemical and diluent
US10669146B2 (en) 2015-09-21 2020-06-02 S.C. Johnson & Son, Inc. Attachment and system for mixing and dispensing a chemical and diluent

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