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WO2001097594A1 - In-line liquid fertiliser injector - Google Patents

In-line liquid fertiliser injector Download PDF

Info

Publication number
WO2001097594A1
WO2001097594A1 PCT/AU2001/000733 AU0100733W WO0197594A1 WO 2001097594 A1 WO2001097594 A1 WO 2001097594A1 AU 0100733 W AU0100733 W AU 0100733W WO 0197594 A1 WO0197594 A1 WO 0197594A1
Authority
WO
WIPO (PCT)
Prior art keywords
fertiliser
line
pipe member
injector according
water
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/AU2001/000733
Other languages
French (fr)
Inventor
Samandar Amhadpour-Milani
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.)
AUSTRALIAN ENVIRONMENTAL TECHNOLOGY Ltd
Original Assignee
AUSTRALIAN ENVIRONMENTAL TECHNOLOGY Ltd
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 AUSTRALIAN ENVIRONMENTAL TECHNOLOGY Ltd filed Critical AUSTRALIAN ENVIRONMENTAL TECHNOLOGY Ltd
Priority to AU65702/01A priority Critical patent/AU6570201A/en
Publication of WO2001097594A1 publication Critical patent/WO2001097594A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
    • A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
    • A01C23/042—Adding fertiliser to watering systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/315—Injector mixers in conduits or tubes through which the main component flows wherein a difference of pressure at different points of the conduit causes introduction of the additional component into the main component

Definitions

  • the present invention relates to an in-line liquid fertiliser injector. More particularly, the in-line liquid fertiliser injector of the present invention is intended for the injection of a liquid fertiliser into a water stream.
  • an in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, a pressurisable chamber and a deformable container having an outlet, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture, the deformable container is provided within the pressurisable chamber, and the outlet of the deformable container is in communication with the water outlet portion of the pipe member by way of a second aperture.
  • the water pressure on the deformable container may be varied. If the flow through the pipe member is reduced, additional pressure is placed on the deformable container, as the water passes through the first aperture. This causes the contents of the container to be delivered to the water outlet portion of the pipe member via the outlet, and the second aperture.
  • the flow regulator comprises a baffle assembly comprising a baffle member and a manual adjustment means, wherein the baffle member is provided within the pipe member, the manual adjustment means is provided adjacent the pipe member and the manual adjustment means is in communication with the baffle member such that adjustment of the manual adjustment means causes rotation of the baffle member.
  • the baffle member is of an area substantially complementary to the cross-section of the pipe member, and of a thickness substantially less than the cross-section of the pipe member, such that in a first position, the baffle member offers little resistance to water passing through the pipe member and in a second position, the baffle member substantially retards water flowing through the pipe member.
  • the baffle member is of an area complementary to the cross-section of the pipe member save for at least one rebate adapted to allow at least a minimal flow of water thereby.
  • the flow regulator further comprises first and second aperture covers, operatively interconnected with the manual adjustment means such that when the baffle member is in the first position, the first and second aperture covers close the first and second apertures respectively, and when the baffle member is in the second position, the first and second aperture covers are removed from the first and second apertures.
  • the first and second aperture covers are each provided in the form of a sectorial flange provided normally relative to the baffle member.
  • the manual adjustment means is provided in the form of a knob, such that rotation of the knob causes rotation of the baffle member.
  • the flow regulator may alternately or additionally comprise a fertiliser regulator valve, wherein the fertiliser regulator valve mediates the flow of fertiliser through the outlet of the deformable container, to the water outlet portion of the pipe member by way of the second aperture.
  • the fertiliser regulator valve is releasably engagable with the outlet of the deformable container.
  • the fertiliser regulator valve is provided in the form of known drip pin, which is releasably engagable with the outlet of the deformable container by way of an externally threaded portion thereof.
  • the flow regulator may alternately or additionally comprise a water inlet valve, wherein the water inlet valve regulates the flow of water from the water inlet portion of the pipe member to the pressurisable chamber.
  • the pressurisable chamber comprises a first element, and a second element
  • the in-line liquid fertiliser injector further comprises a sealing means, wherein the first element is releasably and engagable with the second element by way of a sealing means.
  • the sealing means is provided in the form of an externally threaded portion of the first element, a circumferential projection about the second element and an internally threaded sealing ring of internal diameter less than the circumferential projection, wherein the second element is partially received within the first element and the internally threaded sealing ring applied to force the circumferential projection of the second element against the first element, by way of engagement with the externally threaded portion thereof, to form the pressurisable chamber.
  • the sealing means further comprises an O-ring interposed between the first and second elements.
  • a valve assembly is provided on the pressurisable chamber, wherein the valve assembly is in communication with the deformable container.
  • the valve assembly is of a one-way type, enabling fluid to be introduced to the deformable container, but substantially preventing escape of fluid from such.
  • valve assembly enables rapid and convenient refilling of the deformable container, without the need to dismantle the pressurisable chamber to gain access to such.
  • valve assembly may be provided in conjunction with a deformable container comprising first and second elements as discussed above, as the pressurisable chamber will occasionally need to be dismantled for maintenance purposes.
  • the in-line fertiliser injector further comprises an air gap backflow prevention device, provided in the water inlet portion of the pipe member, upstream of the first aperture.
  • the in-line fertiliser injector further comprises an air release valve, in communication with the pressurisable chamber.
  • the air release valve allows the removal of air entrained in the pressurisable chamber.
  • an end portion of the water inlet portion of the pipe member is internally threaded.
  • the end portion of the water inlet portion of the pipe member is internally threaded by way of a standard domestic %" thread.
  • the end portion of the water inlet portion of the pipe member is internally threaded by way of a standard domestic 1" thread.
  • an end portion of the water outlet portion of the pipe member is externally threaded.
  • the end portion of the water outlet portion of the pipe member is externally threaded by way of a standard domestic S ⁇ " thread.
  • the end portion of the water outlet portion of the pipe member is externally threaded by way of a standard domestic 1" thread.
  • an in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, and a pressurisable chamber adapted to receive a deformable container having an outlet, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture and is adapted to receive the deformable container therein such that the outlet of the deformable container is in communication with the water outlet portion of the pipe member.
  • a deformable container having an outlet, the deformable container being adapted to be received within a pressurisable chamber of an in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture, such that the outlet of the deformable container is in communication with the water outlet portion of the pipe member by way of a second aperture thereof.
  • Figure 1 is a side view of an in-line liquid fertiliser injector in accordance with the embodiment showing a baffle member in first position;
  • Figure 2 is a further side view of the in-line liquid fertiliser injector of Figure 1 showing the baffle in a second position;
  • Figure 3 is a front view of the in-line liquid fertiliser injector of Figures 1 and 2 showing the baffle member in the first position
  • Figure 4 is a front view of the in-line liquid fertiliser injector of Figures 1 to 3 showing the baffle member in the second position
  • Figure 5 is a top view of the in-line liquid fertiliser injector of Figures 1 to 4 showing the baffle member in the first position;
  • Figure 6 is a top view of the in-line liquid fertiliser injector of Figures 1 to 5 showing the baffle member in the second position;
  • Figure 7 is an exploded side view of the in-line liquid fertiliser injector of Figures 1 to 6.
  • an in-line liquid fertiliser injector 10 comprising a pipe member 12, an adjustable flow regulator in the form of a baffle assembly 14 for regulating the flow of water through the pipe member 12, a pressurisable chamber 16 and a deformable container 18.
  • the pipe member 12 in turn comprises a water inlet portion 20 and a water outlet ⁇ portion 22.
  • the pressurisable chamber 16 is in communication with the water inlet portion 20 by way of a first aperture 24.
  • the deformable container 18 is provided with an outlet 26, which is in communication with the water outlet portion 22 of the pipe member 12 by way of a second aperture 28 therein, and a one way- valve 19, which is in communication with the environment through an aperture (not shown) in the pressurisable chamber 16.
  • the baffle assembly 14 comprises a baffle member 30, a manual adjustment means in the form of a knob 32, first and second aperture covers in the form of first and second sectorial flanges 33a and 33b, and a washer 33c.
  • the baffle member 30 is provided within the pipe member 12 whilst, the knob 32 is provided adjacent the pipe member 12.
  • the knob 32 is in direct communication with the baffle member 30 such that rotation of the knob 32 causes rotation of the baffle member 30.
  • the washer 33c prevents the escape of water past the knob 32.
  • the baffle member 30 is of an area complementary to the cross-section of the pipe member 12 save for a rebate 34 provided therein and adapted to allow at least a minimal flow of water thereby, and of a thickness substantially less than the cross-section of the pipe member 12, such that in a first position, the baffle member 30 offers little resistance to water passing through the pipe member 12 and in a second position, the baffle member 30 substantially retards water flowing through the pipe member 12.
  • the sectorial flanges 33a and 33b provided normally relative to the baffle member 30 and are attached thereto, such that when the baffle member 30 is in the first position, the first and second sectorial flanges 33a and 33b close the first and second apertures 24 and 28, and when the baffle member 30 is in the second position, the first and second sectorial flanges 33a and 33b are removed from the first and second apertures 24 and 28 and allow the passage of water therethrough, as can best be seen in Figures 5 and 6.
  • the pressurisable chamber 16 comprises a first element 36, and a second element 38 releasably engagable therewith by way of a sealing means 40.
  • the sealing means 40 comprises an externally threaded portion 42 of the first element 36, a circumferential projection 44 about the second element 36, an internally threaded sealing ring 46 of internal diameter less than the circumferential projection 44, and an O-ring 48.
  • the second element 38 is partially received within the first element 36 and the internally threaded sealing ring 46 applied to force the circumferential projection 44 of the second element 38 against the first element 36, by way of engagement with the externally threaded portion thereof 42, to form the pressurisable chamber 16, as can best be seen in Figure 7.
  • the O-ring 48 is interposed between the first and second elements 36 and 38.
  • the in-line fertiliser injector 10 further comprises a fertiliser regulator valve in the form of a drip pin 50, which mediates the flow of fertiliser through the outlet 26 of the deformable container 18, to the water outlet portion 22 of the pipe member! 2 by way of the second aperture 28.
  • the drip pin 50 is releasably engagable with the outlet 26 of the deformable container 18 by way of an externally threaded portion 52 thereof.
  • the in-line fertiliser injector 10 of the embodiment further comprises an air gap backflow prevention device 54 and an air release valve 56.
  • the air gap backflow prevention device 54 is provided in the water inlet portion 20 of the pipe member 12, upstream of the first aperture 24.
  • the air release valve 56 is provided in communication with the pressurisable chamber 16.
  • An end portion 58 of the water inlet portion 20 of the pipe member 12 is internally threaded by way of a standard domestic %" thread.
  • An end portion 60 of the water outlet portion 22 of the pipe member 12 is externally threaded by way of a standard domestic %" thread.
  • the in-line fertiliser injector 10 is typically attached to a domestic tap fitting (not shown) by way of the threaded end portion 58 of the water inlet portion 20 of the pipe member 12.
  • a hose or other irrigation means (not shown) is typically attached to the threaded end portion 60 of the water outlet portion 22 of the pipe member 12.
  • the deformable container 18 is filled with a liquid fertiliser, with the outlet 26 of the deformable container 18 being in communication with the water outlet portion 22 of the pipe member 12 by way of the drip pin 50.
  • the baffle assembly 14 is in the first position wherein the baffle member 30 offers little resistance to water passing through the pipe member 12, and the first and second sectorial flanges 33a and 33b close the first and second apertures 24 and 28, as can best be seen in Figures 1 , 3 and 5. Accordingly, water entering the water inlet portion 20 of the pipe member 12 is prevented from entering the pressurisable chamber 16, and simply flows by the baffle member 30, and out the water outlet portion 22 of the pipe member 12.
  • the baffle member 32 begins to present resistance to water flowing through the pipe member 12. Further, the sectorial flanges 33a and 33b are removed from the first and second apertures 24 and 28, allowing the passage of water therethrough, as can best be seen in Figures 2, 4 and 6. A portion of the water entering the water inlet portion 22 is diverted by the baffle 30 through the first aperture 24 and into the pressurisable container 16, thereby placing pressure on the deformable container 18 containing the liquid fertiliser.
  • the pressure of the water on the deformable container 18 causes the fertiliser to be ejected through the Outlet 26 thereof, through the drip pin 50 and into the water outlet portion 22 of the pipe member where it mixes with that portion of the water entering the inlet portion 20 and not so diverted by the baffle member 30.
  • the ratio of fertiliser to water exiting the water outlet portion 22 may be adjusted by adjusting the position of the baffle assembly 14. Where the baffle assembly 14 is in the first position, virtually no fertiliser exits the water outlet portion 22. When the baffle assembly 14 is in the second position, the fertiliser to water ratio is maximised. Further fine adjustments to the fertiliser to water ratio may be made by way of the drip pin 50. Replacement of the drip pin 50 with a drip pin with a greater or lesser aperture (not shown) enables further control of the fertiliser to water ratio.
  • the in-line fertiliser injector 10 further comprises an air gap backflow prevention device 54 and an air release valve 56.
  • the air gap backflow prevention device 54 prevents the fertiliser from contaminating the source of the water. Air may be purged from the pressurisable chamber 16 of the in-line liquid fertiliser injector 10 by way of the air release valve 56.
  • the baffle assembly 14 is moved into the first position.
  • the deformable container 18 may then be refilled by way of the one-way valve 19.
  • undoing the sealing ring 50 allows the first element 36 of the pressurisable chamber 16 to be separated from the second element 38, affording access to the deformable container 18, which may be detached from the drip pin 50 and refilled or replaced.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

An in-line liquid fertiliser injector (10) comprising a pipe member (12) having a water inlet portion (20) and a water outlet portion (22), an adjustable flow regulator (14) for regulating the flow of water through the pipe member (12), a pressurisable chamber (16) and a deformable container (18) having an outlet (26). The pressurisable chamber (16) is in communication with the water inlet portion (20) by way of a first aperture (24), the deformable container (18) is provided within the pressurisable chamber (16), and the outlet (26) of the deformable container (18) is in communication with the water outlet portion (22) of the pipe member (12) by way of a second aperture (26).

Description

ln-l_ine Liquid Fertiliser Injector"
Field Of The Invention
The present invention relates to an in-line liquid fertiliser injector. More particularly, the in-line liquid fertiliser injector of the present invention is intended for the injection of a liquid fertiliser into a water stream.
Background Art
The majority of existing devices for the injection of a liquid fertiliser into a water stream are designed for commercial applications. They are costly, and are adapted to deliver very high rates of injection, and are therefore not well suited for domestic use. Further, some existing devices for the injection of a liquid fertiliser into a water stream have the added disadvantage of causing an appreciable decrease in the pressure of the water stream.
The preceding discussion of the background to the invention is intended to facilitate an understanding of the present invention. However, it should be appreciated that the discussion is not an acknowledgement or admission that any of the material referred to was part of the common general knowledge in Australia, as at the priority date of the application.
Throughout the specification, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.
Disclosure of the Invention
In accordance with the present invention there is provided an in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, a pressurisable chamber and a deformable container having an outlet, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture, the deformable container is provided within the pressurisable chamber, and the outlet of the deformable container is in communication with the water outlet portion of the pipe member by way of a second aperture.
By adjusting the flow regulator, the water pressure on the deformable container may be varied. If the flow through the pipe member is reduced, additional pressure is placed on the deformable container, as the water passes through the first aperture. This causes the contents of the container to be delivered to the water outlet portion of the pipe member via the outlet, and the second aperture.
In one form of the invention, the flow regulator comprises a baffle assembly comprising a baffle member and a manual adjustment means, wherein the baffle member is provided within the pipe member, the manual adjustment means is provided adjacent the pipe member and the manual adjustment means is in communication with the baffle member such that adjustment of the manual adjustment means causes rotation of the baffle member.
Preferably, the baffle member is of an area substantially complementary to the cross-section of the pipe member, and of a thickness substantially less than the cross-section of the pipe member, such that in a first position, the baffle member offers little resistance to water passing through the pipe member and in a second position, the baffle member substantially retards water flowing through the pipe member. Preferably still, the baffle member is of an area complementary to the cross-section of the pipe member save for at least one rebate adapted to allow at least a minimal flow of water thereby.
Preferably still, the flow regulator further comprises first and second aperture covers, operatively interconnected with the manual adjustment means such that when the baffle member is in the first position, the first and second aperture covers close the first and second apertures respectively, and when the baffle member is in the second position, the first and second aperture covers are removed from the first and second apertures. lπ a highly preferred form of the invention, the first and second aperture covers are each provided in the form of a sectorial flange provided normally relative to the baffle member.
Preferably, the manual adjustment means is provided in the form of a knob, such that rotation of the knob causes rotation of the baffle member.
The flow regulator may alternately or additionally comprise a fertiliser regulator valve, wherein the fertiliser regulator valve mediates the flow of fertiliser through the outlet of the deformable container, to the water outlet portion of the pipe member by way of the second aperture. Preferably, the fertiliser regulator valve is releasably engagable with the outlet of the deformable container. In one form of the invention, the fertiliser regulator valve is provided in the form of known drip pin, which is releasably engagable with the outlet of the deformable container by way of an externally threaded portion thereof.
The flow regulator may alternately or additionally comprise a water inlet valve, wherein the water inlet valve regulates the flow of water from the water inlet portion of the pipe member to the pressurisable chamber.
Preferably, the pressurisable chamber comprises a first element, and a second element, and the in-line liquid fertiliser injector further comprises a sealing means, wherein the first element is releasably and engagable with the second element by way of a sealing means. In one form of the invention, the sealing means is provided in the form of an externally threaded portion of the first element, a circumferential projection about the second element and an internally threaded sealing ring of internal diameter less than the circumferential projection, wherein the second element is partially received within the first element and the internally threaded sealing ring applied to force the circumferential projection of the second element against the first element, by way of engagement with the externally threaded portion thereof, to form the pressurisable chamber. Preferably still, the sealing means further comprises an O-ring interposed between the first and second elements. In one form of the invention, a valve assembly is provided on the pressurisable chamber, wherein the valve assembly is in communication with the deformable container. Preferably, the valve assembly is of a one-way type, enabling fluid to be introduced to the deformable container, but substantially preventing escape of fluid from such.
The valve assembly enables rapid and convenient refilling of the deformable container, without the need to dismantle the pressurisable chamber to gain access to such. However, it is anticipated that the valve assembly may be provided in conjunction with a deformable container comprising first and second elements as discussed above, as the pressurisable chamber will occasionally need to be dismantled for maintenance purposes.
Preferably, the in-line fertiliser injector further comprises an air gap backflow prevention device, provided in the water inlet portion of the pipe member, upstream of the first aperture.
Preferably, the in-line fertiliser injector further comprises an air release valve, in communication with the pressurisable chamber. The air release valve allows the removal of air entrained in the pressurisable chamber.
Preferably, an end portion of the water inlet portion of the pipe member is internally threaded. In one form of the invention, the end portion of the water inlet portion of the pipe member is internally threaded by way of a standard domestic %" thread. In an alternate form of the invention, the end portion of the water inlet portion of the pipe member is internally threaded by way of a standard domestic 1" thread.
Preferably, an end portion of the water outlet portion of the pipe member is externally threaded. In one form of the invention, the end portion of the water outlet portion of the pipe member is externally threaded by way of a standard domestic SΛ" thread. In an alternate form of the invention, the end portion of the water outlet portion of the pipe member is externally threaded by way of a standard domestic 1" thread. ln accordance with the present invention there is further provided an in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, and a pressurisable chamber adapted to receive a deformable container having an outlet, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture and is adapted to receive the deformable container therein such that the outlet of the deformable container is in communication with the water outlet portion of the pipe member.
In accordance with the present invention there is provided a deformable container having an outlet, the deformable container being adapted to be received within a pressurisable chamber of an in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture, such that the outlet of the deformable container is in communication with the water outlet portion of the pipe member by way of a second aperture thereof.
Brief Description of the Drawings
The in-line liquid fertiliser injector of the present invention will now be described, by way of example only, with reference to one embodiment thereof and the accompanying drawings in which:-
Figure 1 is a side view of an in-line liquid fertiliser injector in accordance with the embodiment showing a baffle member in first position;
Figure 2 is a further side view of the in-line liquid fertiliser injector of Figure 1 showing the baffle in a second position;
Figure 3 is a front view of the in-line liquid fertiliser injector of Figures 1 and 2 showing the baffle member in the first position; Figure 4 is a front view of the in-line liquid fertiliser injector of Figures 1 to 3 showing the baffle member in the second position;
Figure 5 is a top view of the in-line liquid fertiliser injector of Figures 1 to 4 showing the baffle member in the first position;
Figure 6 is a top view of the in-line liquid fertiliser injector of Figures 1 to 5 showing the baffle member in the second position; and
Figure 7 is an exploded side view of the in-line liquid fertiliser injector of Figures 1 to 6.
Best Mode(s) for Carrying Out the Invention
In Figures 1 to 7 there is shown an in-line liquid fertiliser injector 10, comprising a pipe member 12, an adjustable flow regulator in the form of a baffle assembly 14 for regulating the flow of water through the pipe member 12, a pressurisable chamber 16 and a deformable container 18.
The pipe member 12 in turn comprises a water inlet portion 20 and a water outlet^ portion 22. The pressurisable chamber 16 is in communication with the water inlet portion 20 by way of a first aperture 24. The deformable container 18 is provided with an outlet 26, which is in communication with the water outlet portion 22 of the pipe member 12 by way of a second aperture 28 therein, and a one way- valve 19, which is in communication with the environment through an aperture (not shown) in the pressurisable chamber 16.
The baffle assembly 14 comprises a baffle member 30, a manual adjustment means in the form of a knob 32, first and second aperture covers in the form of first and second sectorial flanges 33a and 33b, and a washer 33c.
The baffle member 30 is provided within the pipe member 12 whilst, the knob 32 is provided adjacent the pipe member 12. The knob 32 is in direct communication with the baffle member 30 such that rotation of the knob 32 causes rotation of the baffle member 30. The washer 33c prevents the escape of water past the knob 32. The baffle member 30 is of an area complementary to the cross-section of the pipe member 12 save for a rebate 34 provided therein and adapted to allow at least a minimal flow of water thereby, and of a thickness substantially less than the cross-section of the pipe member 12, such that in a first position, the baffle member 30 offers little resistance to water passing through the pipe member 12 and in a second position, the baffle member 30 substantially retards water flowing through the pipe member 12.
The sectorial flanges 33a and 33b provided normally relative to the baffle member 30 and are attached thereto, such that when the baffle member 30 is in the first position, the first and second sectorial flanges 33a and 33b close the first and second apertures 24 and 28, and when the baffle member 30 is in the second position, the first and second sectorial flanges 33a and 33b are removed from the first and second apertures 24 and 28 and allow the passage of water therethrough, as can best be seen in Figures 5 and 6.
The pressurisable chamber 16 comprises a first element 36, and a second element 38 releasably engagable therewith by way of a sealing means 40. The sealing means 40 comprises an externally threaded portion 42 of the first element 36, a circumferential projection 44 about the second element 36, an internally threaded sealing ring 46 of internal diameter less than the circumferential projection 44, and an O-ring 48.
The second element 38 is partially received within the first element 36 and the internally threaded sealing ring 46 applied to force the circumferential projection 44 of the second element 38 against the first element 36, by way of engagement with the externally threaded portion thereof 42, to form the pressurisable chamber 16, as can best be seen in Figure 7. The O-ring 48 is interposed between the first and second elements 36 and 38.
The in-line fertiliser injector 10 further comprises a fertiliser regulator valve in the form of a drip pin 50, which mediates the flow of fertiliser through the outlet 26 of the deformable container 18, to the water outlet portion 22 of the pipe member! 2 by way of the second aperture 28. The drip pin 50 is releasably engagable with the outlet 26 of the deformable container 18 by way of an externally threaded portion 52 thereof.
The in-line fertiliser injector 10 of the embodiment further comprises an air gap backflow prevention device 54 and an air release valve 56. The air gap backflow prevention device 54 is provided in the water inlet portion 20 of the pipe member 12, upstream of the first aperture 24. The air release valve 56 is provided in communication with the pressurisable chamber 16.
An end portion 58 of the water inlet portion 20 of the pipe member 12 is internally threaded by way of a standard domestic %" thread. An end portion 60 of the water outlet portion 22 of the pipe member 12 is externally threaded by way of a standard domestic %" thread.
In use, the in-line fertiliser injector 10 is typically attached to a domestic tap fitting (not shown) by way of the threaded end portion 58 of the water inlet portion 20 of the pipe member 12. A hose or other irrigation means (not shown) is typically attached to the threaded end portion 60 of the water outlet portion 22 of the pipe member 12. The deformable container 18 is filled with a liquid fertiliser, with the outlet 26 of the deformable container 18 being in communication with the water outlet portion 22 of the pipe member 12 by way of the drip pin 50.
The baffle assembly 14 is in the first position wherein the baffle member 30 offers little resistance to water passing through the pipe member 12, and the first and second sectorial flanges 33a and 33b close the first and second apertures 24 and 28, as can best be seen in Figures 1 , 3 and 5. Accordingly, water entering the water inlet portion 20 of the pipe member 12 is prevented from entering the pressurisable chamber 16, and simply flows by the baffle member 30, and out the water outlet portion 22 of the pipe member 12.
As the baffle assembly 14 is moved toward the second position by way of the knob 32, the baffle member 32 begins to present resistance to water flowing through the pipe member 12. Further, the sectorial flanges 33a and 33b are removed from the first and second apertures 24 and 28, allowing the passage of water therethrough, as can best be seen in Figures 2, 4 and 6. A portion of the water entering the water inlet portion 22 is diverted by the baffle 30 through the first aperture 24 and into the pressurisable container 16, thereby placing pressure on the deformable container 18 containing the liquid fertiliser. The pressure of the water on the deformable container 18 causes the fertiliser to be ejected through the Outlet 26 thereof, through the drip pin 50 and into the water outlet portion 22 of the pipe member where it mixes with that portion of the water entering the inlet portion 20 and not so diverted by the baffle member 30.
Clearly, the ratio of fertiliser to water exiting the water outlet portion 22 may be adjusted by adjusting the position of the baffle assembly 14. Where the baffle assembly 14 is in the first position, virtually no fertiliser exits the water outlet portion 22. When the baffle assembly 14 is in the second position, the fertiliser to water ratio is maximised. Further fine adjustments to the fertiliser to water ratio may be made by way of the drip pin 50. Replacement of the drip pin 50 with a drip pin with a greater or lesser aperture (not shown) enables further control of the fertiliser to water ratio.
The in-line fertiliser injector 10 further comprises an air gap backflow prevention device 54 and an air release valve 56. The air gap backflow prevention device 54 prevents the fertiliser from contaminating the source of the water. Air may be purged from the pressurisable chamber 16 of the in-line liquid fertiliser injector 10 by way of the air release valve 56.
Having exhausted the contents of the deformable container 18, the baffle assembly 14 is moved into the first position. The deformable container 18 may then be refilled by way of the one-way valve 19. Alternately, undoing the sealing ring 50 allows the first element 36 of the pressurisable chamber 16 to be separated from the second element 38, affording access to the deformable container 18, which may be detached from the drip pin 50 and refilled or replaced.
Modifications and variations such as would be apparent to the skilled addressee are considered to fall within the scope of the present invention.

Claims

The Claims Defining the Invention are as Follows
1 . An in-line liquid fertiliser injector characterised by a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, a pressurisable chamber and a deformable container having an outlet, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture, the deformable container is provided within the pressurisable chamber, and the outlet of the deformable container is in communication with the water outlet portion of the pipe member by way of a second aperture.
2. An in-line liquid fertiliser injector according to claim 1 wherein the flow regulator comprises a baffle assembly comprising a baffle member and a manual adjustment means, wherein the baffle member is provided within the pipe member, the manual adjustment means is provided adjacent the pipe member and the manual adjustment means is in communication with the baffle member such that adjustment of the manual adjustment means causes rotation of the baffle member.
3. An in-line liquid fertiliser injector according to claim 2 wherein the baffle member is of an area substantially complementary to the cross-section of the pipe member, and of a thickness substantially less than the cross-section of the pipe member, such that in a first position, the baffle member offers little resistance to water passing through the pipe member and in a second position, the baffle member substantially retards water flowing through the pipe member.
4. An in-line fertiliser injector according to claim 3 wherein the baffle member is of an area complementary to the cross-section of the pipe member save for at least one rebate adapted to allow at least a minimal flow of water thereby.
5. An in-line fertiliser injector according to any one of the preceding claims wherein the flow regulator further comprises first and second aperture covers, operatively interconnected with the manual adjustment means such that when the baffle member is in the first position, the first and second aperture covers close the first and second apertures respectively, and when the baffle member is in the second position, the first and second aperture covers are removed from the first and second apertures.
6. An in-line fertiliser injector according to claim 5 wherein the first and second aperture covers are each provided in the form of a sectorial flange provided normally relative to the baffle member.
7. An in-line fertiliser injector according to any one of claims 2 to 6 wherein the manual adjustment means is provided in the form of a knob, such that rotation of the knob causes rotation of the baffle member.
8. An in-line fertiliser injector according to claim 1 wherein the flow regulator comprises a fertiliser regulator valve, wherein the fertiliser regulator valve mediates the flow of fertiliser through the outlet of the deformable container, to the water outlet portion of the pipe member by way of the second aperture.
9. An in-line fertiliser injector according to claim 8 wherein the fertiliser regulator valve is releasably engagable with the outlet of the deformable container.
10. An in-line fertiliser injector according to claim 9 wherein the fertiliser regulator valve is provided in the form of a drip pin, which is releasably engagable with the outlet of the deformable container by way of an externally threaded portion thereof.
11. An in-line fertiliser injector according to any one of claims 1 to 7 wherein the flow regulator further comprises a fertiliser regulator valve, wherein the fertiliser regulator valve mediates the flow of fertiliser through the outlet of the deformable container, to the water outlet portion of the pipe member by way of the second aperture.
12. An in-line fertiliser injector according to claim 1 wherein the flow regulator comprises a water inlet valve, wherein the water inlet valve regulates the flow of water from the water inlet portion of the pipe member to the pressurisable chamber.
13. An in-line fertiliser injector according to any one of claims 2 to 13 wherein the flow regulator further comprises a water inlet valve, wherein the water inlet valve regulates the flow of water from the water inlet portion of the pipe member to the pressurisable chamber.
14. An in-line fertiliser injector according to any one of the preceding claims wherein the pressurisable chamber comprises a first element, and a second element, and the in-line liquid fertiliser injector further comprises a sealing means, wherein the first element is releasably and engagable with the second element by way of a sealing means.
15. An in-line fertiliser injector according to claim 14 wherein the sealing means is provided in the form of an externally threaded portion of the first element, a circumferential projection about the second element and an internally threaded sealing ring of internal diameter less than the circumferential projection, wherein the second element is partially received within the first element and the internally threaded sealing ring applied to force the circumferential projection of the second element against the first element, by way of engagement with the externally threaded portion thereof, to form the pressurisable chamber.
16. An in-line fertiliser injector according to claim 15 wherein the sealing means further comprises an O-ring interposed between the first and second elements.
17. An in-line fertiliser injector according to any one of the preceding claims wherein a valve assembly is provided on the pressurisable chamber such that the valve assembly is in communication with the deformable container.
18. An in-line fertiliser injector according to claim 17 wherein the valve assembly is of a one-way type, enabling fluid to be introduced to the deformable container, but substantially preventing escape of fluid from such.
19. An in-line fertiliser injector according to any one of the -preceding claims wherein the in-line fertiliser injector further comprises an air gap backflow prevention device, provided in the water inlet portion of the pipe member, upstream of the first aperture.
20. An in-line fertiliser injector according to any one of the preceding claims wherein the in-line fertiliser injector further comprises an air release valve, in communication with the pressurisable chamber.
21. An in-line fertiliser injector according to any one of the preceding claims wherein an end portion of the water inlet portion of the pipe member is internally threaded.
22. An in-line fertiliser injector according to claim 21 wherein the end portion of the water inlet portion of the pipe member is internally threaded by way of a standard domestic %" thread.
23. An in-line fertiliser injector according to claim 21 wherein the end portion of the water inlet portion of the pipe member is internally threaded by way of a standard domestic 1" thread.
24. An in-line fertiliser injector according to any one of the preceding claims wherein an end portion of the water outlet portion of the pipe member is externally threaded.
25. An in-line fertiliser injector according to claim 24 wherein the end portion of the water outlet portion of the pipe member is externally threaded by way of a standard domestic %" thread.
26. An in-line fertiliser injector according to claim 24 wherein the end portion of the water outlet portion of the pipe member is externally threaded by way of a standard domestic 1" thread.
27. An in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, and a pressurisable chamber adapted to receive a deformable container having an outlet, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture and is adapted to receive the deformable container therein such that the outlet of the deformable container is in communication with the water outlet portion of the pipe member.
28. A deformable container having an outlet, the deformable container being adapted to be received within a pressurisable chamber of an in-line liquid fertiliser injector comprising a pipe member having a water inlet portion and a water outlet portion, an adjustable flow regulator for regulating the flow of water through the pipe member, wherein the pressurisable chamber is in communication with the water inlet portion by way of a first aperture, such that the outlet of the deformable container is in communication with the water outlet portion of the pipe member by way of a second aperture thereof.
29. An in-line fertiliser injector, substantially as described herein with reference to Figures 1 to 7.
30. A deformable container substantially as described herein with reference to Figures 1 , 2, 3, 4 and 7.
PCT/AU2001/000733 2000-06-20 2001-06-20 In-line liquid fertiliser injector Ceased WO2001097594A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU65702/01A AU6570201A (en) 2000-06-20 2001-06-20 In-line liquid fertiliser injector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ8257A AUPQ825700A0 (en) 2000-06-20 2000-06-20 In line liquid fertiliser injector
AUPQ8257 2000-06-20

Publications (1)

Publication Number Publication Date
WO2001097594A1 true WO2001097594A1 (en) 2001-12-27

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WO (1) WO2001097594A1 (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2153240A (en) * 1936-03-14 1939-04-04 Clarence O Dailey Spraying machine
US2618510A (en) * 1946-05-25 1952-11-18 Lindley E Mills Fluid proportioning apparatus
GB727492A (en) * 1952-07-03 1955-04-06 John Richard Keys Improvements in spraying apparatus
GB936956A (en) * 1960-05-20 1963-09-18 Ronald Sidney Garwood Improvements in or relating to liquid dispensing apparatus
US3155113A (en) * 1962-02-05 1964-11-03 Edgerton Germeshausen & Grier Automatic mixing device
DE2453512A1 (en) * 1974-11-12 1976-09-23 Alldos Eichler Kg Metering valve for fluids and gases into fluid - esp dissolved chemicals into water for use or drinking
FR2445725A1 (en) * 1979-01-08 1980-08-01 Gouin Michel Additive meter for fire-fighting water - has water applying pressure to flexible container to force additive through venturi
US4418869A (en) * 1979-09-24 1983-12-06 Healy James W Hose mounted fluid mixing sprayer
US4682734A (en) * 1985-03-20 1987-07-28 Turbo Tek Enterprises, Inc. Spraying device having controlled additive fluid feed and a telescoping spray tube assembly
US4974634A (en) * 1989-06-19 1990-12-04 Agulia John T Liquid fertilizer metering system
US5094269A (en) * 1989-06-19 1992-03-10 Agulia John T Liquid fertilizer metering system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2153240A (en) * 1936-03-14 1939-04-04 Clarence O Dailey Spraying machine
US2618510A (en) * 1946-05-25 1952-11-18 Lindley E Mills Fluid proportioning apparatus
GB727492A (en) * 1952-07-03 1955-04-06 John Richard Keys Improvements in spraying apparatus
GB936956A (en) * 1960-05-20 1963-09-18 Ronald Sidney Garwood Improvements in or relating to liquid dispensing apparatus
US3155113A (en) * 1962-02-05 1964-11-03 Edgerton Germeshausen & Grier Automatic mixing device
DE2453512A1 (en) * 1974-11-12 1976-09-23 Alldos Eichler Kg Metering valve for fluids and gases into fluid - esp dissolved chemicals into water for use or drinking
FR2445725A1 (en) * 1979-01-08 1980-08-01 Gouin Michel Additive meter for fire-fighting water - has water applying pressure to flexible container to force additive through venturi
US4418869A (en) * 1979-09-24 1983-12-06 Healy James W Hose mounted fluid mixing sprayer
US4682734A (en) * 1985-03-20 1987-07-28 Turbo Tek Enterprises, Inc. Spraying device having controlled additive fluid feed and a telescoping spray tube assembly
US4974634A (en) * 1989-06-19 1990-12-04 Agulia John T Liquid fertilizer metering system
US5094269A (en) * 1989-06-19 1992-03-10 Agulia John T Liquid fertilizer metering system

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