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WO2019151176A1 - Émetteur et tube d'irrigation goutte à goutte - Google Patents

Émetteur et tube d'irrigation goutte à goutte Download PDF

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Publication number
WO2019151176A1
WO2019151176A1 PCT/JP2019/002681 JP2019002681W WO2019151176A1 WO 2019151176 A1 WO2019151176 A1 WO 2019151176A1 JP 2019002681 W JP2019002681 W JP 2019002681W WO 2019151176 A1 WO2019151176 A1 WO 2019151176A1
Authority
WO
WIPO (PCT)
Prior art keywords
emitter
tube
wall surface
groove
irrigation liquid
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/JP2019/002681
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English (en)
Japanese (ja)
Inventor
一磨 柳沢
好貴 小野
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.)
Enplas Corp
Original Assignee
Enplas Corp
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 JP2018034752A external-priority patent/JP2019129807A/ja
Application filed by Enplas Corp filed Critical Enplas Corp
Priority to EP19746994.3A priority Critical patent/EP3747261A4/fr
Priority to CN201980010694.8A priority patent/CN111655024A/zh
Priority to US16/965,613 priority patent/US20210037727A1/en
Publication of WO2019151176A1 publication Critical patent/WO2019151176A1/fr
Priority to IL276394A priority patent/IL276394A/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
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • A01G25/023—Dispensing fittings for drip irrigation, e.g. drippers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion

Definitions

  • the present invention relates to an emitter and a drip irrigation tube having the emitter.
  • drip irrigation has been known as one of the plant cultivation methods.
  • the drip irrigation method is a method in which a drip irrigation tube is placed on the soil in which plants are planted, and irrigation liquid such as water or liquid fertilizer is dropped from the drip irrigation tube to the soil.
  • irrigation liquid such as water or liquid fertilizer
  • the drip irrigation tube includes a tube having a plurality of through-holes through which irrigation liquid is discharged, and a plurality of emitters (“ (Also referred to as, for example, Patent Document 1).
  • Patent Document 1 describes an emitter including a main body and a flap that is movable with respect to the main body around a hinge.
  • This flap is formed of the same material as the main body, preferably the same.
  • the flap has a membrane (diaphragm) disposed in the frame.
  • the recess in the body is covered by a flap membrane rotated about the hinge.
  • the recess is formed in the main body with a rim provided in the frame housing as a peripheral edge.
  • a pressure regulating chamber is formed by pressing the flap membrane against the rim. The flow rate of the liquid flowing out from the pressure adjustment chamber is adjusted by elastically bending the membrane due to pressure fluctuation.
  • the flap and the main body are integrally formed with the flap opened. And the recessed part formed in the main body is covered with the film
  • An object of the present invention is to provide an emitter and a drip irrigation tube capable of adjusting the flow rate of flowing liquid and reducing the manufacturing cost.
  • the emitter according to the present invention has a structure in which an inner wall of a tube through which an irrigation liquid is circulated is joined to a position corresponding to a discharge port that communicates the inside and outside of the tube.
  • An emitter for quantitatively discharging the irrigation liquid from the discharge port to the outside of the tube and an emitter main body and a discharge amount adjusting unit for adjusting the amount of the irrigation liquid discharged from the discharge port
  • the discharge amount adjusting unit is integrally formed with the emitter body at a position facing the inner wall surface when the emitter is joined to the inner wall surface of the tube, It has a diaphragm part that deforms according to the pressure of the irrigation liquid, and the diaphragm part is more than a certain amount from the discharge port even when the diaphragm part is deformed and closely contacts the inner wall surface.
  • the discharge amount securing portion for securing the discharge of the irrigation liquid having a plane of the inner wall surface and the opposite side.
  • a drip irrigation tube according to the present invention is joined to a tube having a discharge port for discharging irrigation liquid and a position corresponding to the discharge port on the inner wall surface of the tube. And an emitter according to the present invention.
  • the manufacturing cost of the emitter capable of adjusting the flow rate of the flowing liquid can be reduced.
  • FIG. 1 is a cross-sectional view of a drip irrigation tube according to an embodiment of the present invention.
  • 2A and 2B are diagrams showing the configuration of the emitter according to one embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of the emitter taken along the line AA shown in FIG. 2A.
  • 4A and 4B are diagrams for explaining a case where the diaphragm portion is in close contact with the inner wall surface.
  • 5A and 5B are diagrams for explaining the first modification.
  • 6A and 6B are diagrams for explaining a second modification.
  • 7A and 7B are diagrams for explaining a third modification.
  • 8A and 8B are diagrams for describing a fourth modification.
  • FIG. 9A and FIG. 9B are diagrams for explaining a fifth modification.
  • FIG. 10A and FIG. 10B are diagrams for explaining a sixth modification.
  • FIG. 11A and FIG. 11B are diagrams for explaining a seventh modification.
  • FIG. 1 is a cross-sectional view in the direction along the axis of the drip irrigation tube 100 according to the present embodiment. As shown in FIG. 1, the drip irrigation tube 100 includes a tube 110 and an emitter 120.
  • the tube 110 is a tube for flowing irrigation liquid.
  • irrigation liquids include water, liquid fertilizers, pesticides and mixtures thereof.
  • the direction in which the irrigation liquid flows in the tube 110 is not particularly limited.
  • the material of the tube 110 is not particularly limited. In the present embodiment, the material of the tube 110 is polyethylene.
  • the tube wall of the tube 110 is formed with a plurality of discharge ports 111 for discharging the irrigation liquid at predetermined intervals (for example, 200 mm or more and 500 mm or less) in the axial direction of the tube 110.
  • the diameter of the opening of the discharge port 111 is not particularly limited as long as the irrigation liquid can be discharged. In the present embodiment, the diameter of the opening of the discharge port 111 is 1.5 mm.
  • Emitters 120 are respectively joined to positions on the inner wall surface 112 corresponding to the discharge ports 111.
  • the cross-sectional shape and cross-sectional area perpendicular to the axial direction of the tube 110 are not particularly limited as long as the emitter 120 can be disposed inside the tube 110.
  • the drip irrigation tube 100 is manufactured by joining the back surface 121 of the emitter 120 to the inner wall surface 112.
  • the method for joining the tube 110 and the emitter 120 is not particularly limited. Examples of the method for joining the tube 110 and the emitter 120 include welding of a resin material constituting the tube 110 or the emitter 120, adhesion with an adhesive, and the like.
  • the discharge port 111 is formed after the tube 110 and the emitter 120 are joined, but the discharge port 111 may be formed before the joining.
  • FIGS. 2A and 2B are diagrams showing the configuration of the emitter 120 according to the present embodiment.
  • 2A is a plan view of the emitter 120
  • FIG. 2B is a bottom view of the emitter 120.
  • FIG. 3 is a cross-sectional view of the emitter 120 taken along the line AA shown in FIG. 2A.
  • the emitter 120 is joined to the inner wall surface 112 so as to cover the discharge port 111.
  • the shape of the emitter 120 is not particularly limited as long as it can adhere to the inner wall surface 112 and cover the discharge port 111.
  • the shape of the back surface joined to the inner wall surface 112 in the cross section of the emitter 120 perpendicular to the axial direction of the tube 110 is a substantially arc shape convex toward the inner wall surface 112 along the inner wall surface 112. It is.
  • the shape of the emitter 120 in plan view is a substantially rectangular shape with four corners rounded off.
  • the size of the emitter 120 is not particularly limited.
  • the length of the emitter 120 in the long side direction is 19 mm
  • the length in the short side direction is 8 mm
  • the height is 0.7 mm.
  • the size of the emitter 120 may be appropriately determined based on a desired amount of irrigation liquid discharged from the discharge port 111.
  • the emitter 120 is formed of a flexible material.
  • the material of the emitter 120 include resin, elastomer, and rubber.
  • the resin include polyethylene and silicone.
  • the flexibility of the emitter 120 can be adjusted by using a resin material having elasticity. Examples of a method for adjusting the flexibility of the emitter 120 include selection of a resin having elasticity, adjustment of a mixing ratio of a resin material having elasticity to a hard resin material, and the like.
  • the emitter 120 includes a water intake unit 150, a connection groove 131 serving as a connection channel 141, a decompression groove 132 serving as a decompression channel 142, and a discharge amount adjusting unit 180.
  • the surface of the emitter 120 shown in FIG. 2A is referred to as the front surface 122, and the surface shown in FIG.
  • the connection groove 131, the decompression groove 132, and the discharge amount adjusting unit 180 are arranged on the back surface 121 side.
  • the configuration of the emitter 120 excluding the discharge amount adjusting unit 180 that is, the configuration including the water intake unit 150, the connection groove 131 (connection channel 141), and the pressure reduction groove 132 (pressure reduction channel 142) is referred to as the emitter.
  • the main body 123 is assumed.
  • connection groove 131 and the decompression groove 132 become a connection channel 141 and a decompression channel 142, respectively.
  • a water flow path connecting the water intake section 150 and the discharge amount adjusting section 180 is formed by the water intake section 150, the connection flow path 141, the decompression flow path 142, and the discharge amount adjusting section 180.
  • This flow channel distributes the irrigation liquid from the water intake unit 150 to the discharge amount adjusting unit 180.
  • a plurality of water intake sections 150 are arranged along the long axis direction of the emitter 120.
  • five water intake portions 150 are arranged apart from each other at the outer edge portions on both sides (see FIGS. 2A and 2B).
  • the water intake unit 150 is a water intake through hole that penetrates from the front surface 122 to the back surface 121 of the emitter 120. When the emitter 120 is joined to the inner wall surface 112, the irrigation liquid in the tube 110 is taken into the emitter 120 from the water intake unit 150 side.
  • the position of the water intake unit 150 is not limited to this, and may be provided apart from each other on both side surfaces of the emitter 120 as in a modification example described later. Further, the number of water intake units 150 is not limited to this, and may be more or less.
  • the water intake unit 150 may have a screen member for preventing floating substances in the irrigation liquid from entering the emitter 120, for example.
  • the shape of the screen member is not particularly limited as long as the above function can be exhibited.
  • the screen member is a lattice structure in which a plurality of linear members arranged in parallel are overlapped at different angles, or a wedge wire whose width increases as it goes from the outer surface of the emitter 120 to the inner surface of the water intake unit 150. It has a structure. Thus, when the screen member has a wedge wire structure, the pressure loss of the irrigation liquid flowing into the water intake unit 150 is suppressed.
  • connection groove 131 connects the water intake unit 150 and the decompression groove 132.
  • the connection groove 131 is a groove formed linearly along the minor axis direction of the emitter 120 on the back surface 121 side of the emitter 120.
  • a decompression groove 132 is connected near the center of the connection groove 131.
  • the decompression groove 132 connects the connection groove 131 (connection flow path 141) and the discharge amount adjusting unit 180.
  • the decompression groove 132 reduces the pressure of the irrigation liquid introduced from the water intake unit 150 and guides it to the discharge amount adjustment unit 180.
  • the decompression groove 132 is a groove disposed along the major axis direction in the central portion of the back surface 121.
  • the upstream end of the decompression groove 132 is connected to the connection groove 131, and the downstream end is connected to the discharge amount adjusting unit 180.
  • the planar view shape of the decompression groove 132 is a zigzag shape.
  • a plurality of convex portions 133 alternately project from the inner side surfaces on both sides (see FIG. 2B).
  • the protrusion 133 preferably extends from the inner surface of the decompression groove 132 so that the tip thereof does not exceed the center line L of the decompression groove 132 in plan view of the emitter 120 (see FIG. 2B).
  • the back surface 121 side of the diaphragm portion 181 (in other words, the surface side facing the inner wall surface 112 of the diaphragm portion 181 when the emitter 120 is joined to the inner wall surface 112) ) Is formed with a discharge amount securing portion 182.
  • the discharge amount securing part 182 is a single groove provided so as to pass through the center of the diaphragm part 181.
  • the discharge amount securing part 182 is provided so as to pass through the approximate center of the discharge port 111 of the tube 110.
  • the diaphragm portion 181 Since the diaphragm portion 181 is formed integrally with the emitter body 123, the diaphragm portion 181 has flexibility. The diaphragm portion 181 is deformed toward the inner wall surface 112 side by the pressure of the irrigation liquid in the tube 110 in a state where the emitter 120 is joined to the inner wall surface 112.
  • the diaphragm 181 Before the irrigation liquid is fed into the tube 110, the diaphragm 181 is not deformed because the pressure of the irrigation liquid is not applied to the diaphragm 181 (see FIG. 1).
  • the irrigation liquid begins to be fed into the tube 110, the pressure of the irrigation liquid within the tube 110 begins to rise, and the diaphragm portion 181 begins to deform.
  • the pressure of the irrigation liquid is relatively low, the deformation of the diaphragm portion 181 is relatively small, and the diaphragm portion 181 does not contact the inner wall surface 112. In this state, the irrigation liquid passes through the gap between the diaphragm portion 181 and the tube 110 and is discharged from the discharge port 111.
  • FIG. 4A is a cross-sectional view in the direction along the axis of the drip irrigation tube 100 when the diaphragm portion 181 is in close contact with the inner wall surface 112.
  • 4B is a cross-sectional view of the emitter 120 taken along line BB in FIG. 4A.
  • the drip irrigation tube 100 can discharge a certain amount or more of the irrigation liquid out of the tube 110 regardless of whether the pressure of the irrigation liquid is low or high.
  • the width of the groove as the discharge amount securing part 182 is not particularly limited.
  • the width of the groove as the discharge amount securing unit 182 may be determined based on, for example, the amount of irrigation liquid that is desirably discharged from the discharge port 111 when the pressure of the irrigation liquid exceeds a set value.
  • the emitter 120 includes the emitter main body 123 including the water intake 150, the connection groove 131 (connection flow path 141), and the pressure reduction groove 132 (pressure reduction flow path 142), and the discharge port of the tube 110.
  • a discharge amount adjusting unit 180 that adjusts the amount of the irrigation liquid discharged from 111.
  • the discharge amount adjusting unit 180 is formed integrally with the emitter main body 123 at a position facing the inner wall surface 112 when the emitter 120 is joined to the inner wall surface 112 of the tube 110, and is adjusted to the pressure of the irrigation liquid in the tube 110.
  • the diaphragm portion 181 is deformed accordingly.
  • the diaphragm portion 181 includes a discharge amount securing portion 182 for securing the discharge of a predetermined amount or more of irrigation liquid from the discharge port 111 even when the diaphragm portion 181 is deformed and comes into close contact with the inner wall surface 112. 112 on the surface facing the surface.
  • the emitter 120 is formed, for example, by integrally forming a flap movable with respect to the conventional emitter body with the emitter body, rotating the flap around the hinge, and then turning the flap into the emitter.
  • the discharge amount adjusting portion is formed by engaging the main body by adhesion or welding, it can be manufactured at a reduced cost.
  • the conventional process of rotating the flap in the emitter and the process of engaging the flap with the emitter main body by bonding or welding can be omitted, so that the manufacturing cost can be reduced.
  • the emitter 120 when the diaphragm portion 181 is deformed by the pressure of the irrigation liquid in the tube 110, the diaphragm portion 181 is provided in the tube 110 provided with the discharge port 111. Direct contact with the inner wall. Therefore, the emitter 120 according to the present embodiment is configured so that, for example, a member for contacting the diaphragm 181 when the diaphragm 181 is deformed is opposed to the diaphragm 181 of the emitter 120 main body in order to configure the discharge amount adjusting unit 180. It is not necessary to provide in the position to do.
  • the emitter 120 according to the present embodiment is provided with a pedestal or the like at a position facing the diaphragm 181, and the discharge amount is reduced by narrowing the space between the diaphragm 181 and the pedestal by the pressure of the irrigation liquid.
  • the configuration can be simplified. For this reason, reduction of the manufacturing process and simplification of the mold are realized, and the manufacturing cost can be reduced.
  • the emitter 120 can adjust the discharge amount of the irrigation liquid from the discharge port 111 by deforming the diaphragm portion 181 according to the pressure of the irrigation liquid in the tube 110. .
  • the discharge amount securing unit 182 allows the irrigation liquid to be discharged from the discharge port 111 by a certain amount or more. Discharge can be secured.
  • the discharge amount securing part 182 is a single groove provided so as to pass through the center of the diaphragm part 181.
  • the emitter 120 is deformed on the inner wall surface of the tube 110 by the discharge amount securing portion 182 that is one groove provided so as to pass through the center of the diaphragm portion 181. Even in the case of close contact, a certain amount or more of irrigation liquid was discharged from the discharge port 111.
  • the present invention is not limited to this. Below, the modification of the irrigation tube 100 of this invention is demonstrated.
  • FIGS. 5A and 5B are diagrams for explaining the first modification.
  • 5A is a cross-sectional view in the direction along the axis of the drip irrigation tube 100
  • FIG. 5B is a bottom view of the emitter 120.
  • the emitter 120 has a plurality of grooves arranged in parallel to each other as the discharge amount securing section 182.
  • the discharge port 111 of the tube 110 is not blocked even when the diaphragm portion 181 is deformed and closely contacts the inner wall surface 112 by the discharge amount securing portion 182 having such a shape. For this reason, similarly to the above-described embodiment, even when the diaphragm portion 181 is in close contact with the inner wall surface 112, it is possible to secure a discharge amount of a certain amount or more of irrigation liquid from the discharge port 111. .
  • the center of the discharge port 111 and the center of the diaphragm portion 181 may be joined with a slight shift. Even in such a case, in the first modification, it is possible to ensure a discharge amount of the irrigation liquid of a certain amount or more from the discharge port 111 by at least one of the plurality of grooves.
  • the position where the water intake unit 150 is provided is different from the above-described embodiment.
  • the six water intake portions 150 are arranged on both side surfaces of the emitter 120 so as to be separated from each other.
  • the water intake part 150 is provided so that it may penetrate from the surface 122 of the emitter 120 to the back surface 121 like the embodiment demonstrated above, for example.
  • it may be provided on both side surfaces of the emitter 120 as in the first modification.
  • the number of water intake units 150 is not particularly limited, and may be determined based on the amount of irrigation liquid to be taken into the emitter 120, for example.
  • 6A and 6B are diagrams for explaining the second modification.
  • 6A is a cross-sectional view in the direction along the axis of the drip irrigation tube 100
  • FIG. 6B is a bottom view of the emitter 120.
  • the width of the groove is not uniform, the width of the groove increases toward the center of the groove, and the width of the groove increases toward both ends of the groove.
  • a discharge amount securing part 182 is formed so as to be narrow.
  • the discharge amount securing part 182 is formed so that the groove width becomes narrower toward both ends of the groove. Therefore, the groove width is uniform as in the first modification. Compared with the case where it exists, the area which the discharge amount securing part 182 occupies with respect to the diaphragm part 181 whole can be made small. Thereby, the discharge amount securing part 182 can be formed without reducing the strength of the diaphragm part 181.
  • the present invention is not limited to this.
  • a configuration in which the width becomes narrower toward the center of the groove of the discharge amount securing portion 182 is not recommended in the present invention. This is because when the width becomes narrower toward the center of the groove of the discharge amount securing portion 182, the amount of irrigation liquid discharged from the discharge port 111 is secured when the diaphragm portion 181 is deformed and closely contacts the discharge port 111. It is difficult to do.
  • it is desirable that the width of the discharge amount securing portion 182 is secured to some extent at the center of the groove.
  • the discharge port 111 of the tube 110 is not blocked even when the diaphragm portion 181 is deformed and closely contacts the inner wall surface 112 by the discharge amount securing portion 182 having such a shape. For this reason, similarly to the above-described embodiment, even when the diaphragm portion 181 is in close contact with the inner wall surface 112, a certain amount or more of irrigation liquid can be discharged.
  • the center of the discharge port 111 and the center of the diaphragm portion 181 are Even when there is a slight shift, at least one of the grid-like grooves can ensure a discharge amount of a certain amount or more of irrigation liquid from the discharge port 111.
  • FIGS. 8A and 8B are diagrams for describing a fourth modification.
  • 8A is a cross-sectional view in the direction along the axis of the drip irrigation tube 100
  • FIG. 8B is a bottom view of the emitter 120.
  • the emitter 120 has grooves arranged radially from the center of the diaphragm portion 181 as the discharge amount securing portion 182. As shown in FIG.
  • the discharge port 111 of the tube 110 is not blocked even when the diaphragm portion 181 is deformed and closely contacts the inner wall surface 112 by the discharge amount securing portion 182 having such a shape. For this reason, similarly to the above-described embodiment, even when the diaphragm portion 181 is in close contact with the inner wall surface 112, a certain amount or more of irrigation liquid can be discharged.
  • the discharge amount ensuring part 182 of the fourth modification is not limited to a plurality of grooves arranged radially from the center of the diaphragm part 181 as shown in FIG. 8B.
  • the groove as the discharge amount securing part 182 may be a single groove formed from the center of the diaphragm part 181 toward the outer peripheral edge.
  • FIG. 9A and FIG. 9B are diagrams for explaining a fifth modification.
  • FIG. 9A is a cross-sectional view in the direction along the axis of the drip irrigation tube 100
  • FIG. 9B is a bottom view of the emitter 120.
  • the diaphragm portion 181 is convex toward the inner wall surface 112 when the emitter 120 is joined to the inner wall surface 112 of the tube 110. It has a valve seat portion 1811 formed.
  • the valve seat portion 1811 has a cylindrical shape protruding from the surface facing the inner wall surface 112 of the diaphragm portion 181.
  • the center of the valve seat portion 1811 in plan view is the same center as the circular shape constituting the diaphragm portion 181.
  • the valve seat portion 1811 is disposed so as not to be in contact with the inner wall surface 112 when the pressure of the irrigation liquid is less than the set value.
  • the valve seat portion 1811 is formed so as to be in close contact with the inner wall surface 112 when the pressure of the irrigation liquid is equal to or higher than a set value.
  • valve seat portion 1811 is not particularly limited as long as the above function can be exhibited.
  • the outer shape of the valve seat portion 1811 may not be circular, but may be rectangular or the like.
  • a recess 1812 is formed at the center of the surface of the valve seat portion 1811 closer to the inner wall surface 112. Further, a groove 1813 connected from the recess 1812 to the outer peripheral edge of the valve seat portion 1811 is formed on the surface of the valve seat portion 1811 closer to the inner wall surface 112.
  • the recess 1812 and the groove 1813 constitute a discharge amount securing part 182. That is, when the diaphragm portion 181 is deformed and the valve seat portion 1811 is in close contact with the inner wall surface 112, the discharge port 111 is not blocked by the concave portion 1812 and the groove 1813. For this reason, even when the valve seat portion 1811 of the diaphragm portion 181 is in close contact with the inner wall surface 112, the amount of the irrigation liquid discharged from the discharge port 111 can be secured at a certain amount or more.
  • FIGSixth Modification 10A and 10B are diagrams for explaining a sixth modification.
  • 10A is a cross-sectional view in the direction along the axis of the drip irrigation tube 100
  • FIG. 10B is a bottom view of the emitter 120.
  • the emitter body 123 includes a first emitter body 123A and a second emitter body 123B.
  • the diaphragm portion 181 is disposed between the first emitter body 123A and the second emitter body 123B in the extending direction of the diaphragm portion 181 (left-right direction in FIGS. 10A and 10B).
  • Discharge amount securing portions 182 are formed on the front surface 122 side and the back surface 121 side of the diaphragm portion 181. Similar to the configuration shown in FIG.
  • the first emitter body 123A includes a water intake 150A, a connection groove 131A (connection flow path 141A), and a pressure reduction groove 132A (pressure reduction flow path 142A).
  • the second emitter body 123B includes a water intake 150B, a connection groove 131B (connection flow path 141B), and a pressure reduction groove 132B (pressure reduction flow path 142B).
  • the first emitter body 123A and the second emitter body 123B are disposed upside down.
  • discharge amount securing portion 182 of the sixth modification may be formed in the manner shown in FIGS.
  • the diaphragm portion 181 is disposed between the first emitter body 123A and the second emitter body 123B, which are disposed in the opposite directions in the extending direction of the diaphragm portion 181. For this reason, when the emitter 120, which is made of a flexible material, may be difficult to discriminate between the vertical direction and the vertical direction, it is not necessary to discriminate the vertical direction of the emitter 120. An effect that it can be easily performed is further exhibited.
  • FIG. 11A and FIG. 11B are diagrams for explaining a seventh modification.
  • FIG. 11A is a cross-sectional view in the direction along the axis of the drip irrigation tube 100
  • FIG. 11B is a bottom view of the emitter 120.
  • the emitter body 123 includes a first emitter body 123A and a second emitter body 123B having a circular shape in plan view.
  • the first emitter main body 123A and the second emitter main body 123B are arranged opposite to each other.
  • the diaphragm portion 181 is a first portion in the center of the first and second emitter bodies 123A and 123B and in the height direction of the emitter 120 (the vertical direction in FIG. 11A and the front and back direction with respect to the paper surface in FIG. 11B). Arranged between the emitter body 123A and the second emitter body 123B.
  • Discharge amount securing portions 182 are formed on the front surface 122 side and the back surface 121 side of the diaphragm portion 181.
  • the emitter main body 123A includes a plurality of water intake portions 150A that are spaced apart from each other on the side surface of the emitter main body 123A, a connection groove 131A (connection flow path 141A) and a pressure reduction groove 132A (pressure reduction flow path 142A) having an arc shape in plan view. ).
  • the second emitter body 123B includes a plurality of water intake portions 150B that are spaced apart from each other on the side surface of the emitter body 123B, and a connection groove 131B (connection) having an arc shape in plan view.
  • discharge amount securing portion 182 of the seventh modification may be formed in the manner shown in FIGS.
  • the first emitter main body 123A and the second emitter main body 123B are arranged opposite to each other.
  • the diaphragm portion 181 is disposed between the first emitter body 123A and the second emitter body 123B in the height direction of the emitter 120.
  • an emitter capable of adjusting the flow rate of the flowing liquid can be provided at a reduced manufacturing cost. Accordingly, it is expected that the emitter will be spread to technical fields that require long-term dripping, such as drip irrigation and durability tests, and further development of the technical field will be expected.
  • DESCRIPTION OF SYMBOLS 100 Drip irrigation tube 110 Tube 111 Discharge port 112 Inner wall surface 120 Emitter 121 Back surface 122 Surface 123 Emitter main body 131 Connection groove 132 Decompression groove 133 Convex part 141 Connection flow path 142 Decompression flow path 150 Water intake part 180 Discharge amount adjustment part 181 Diaphragm part 1811 Valve seat portion 1812 Recessed portion 1813 Groove 182 Discharge amount securing portion

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Nozzles (AREA)

Abstract

La présente invention concerne un émetteur comprenant : un corps principal d'émetteur ; et une unité de régulation de la quantité de distribution qui régule la quantité de liquide d'irrigation distribué depuis l'ouverture de distribution d'un tube. L'unité de régulation de la quantité de distribution présente une partie diaphragme formée d'un seul tenant avec le corps principal d'émetteur dans une position faisant face à la surface de paroi interne du tube lorsque l'émetteur est joint à la surface de paroi interne, la partie diaphragme se déformant selon la pression du liquide d'irrigation à l'intérieur du tube. La partie diaphragme présente une partie de fixation solide de la quantité de distribution sur la surface du côté faisant face à la surface de paroi interne, la partie de fixation solide de la quantité de distribution fixant solidement la distribution du liquide d'irrigation depuis l'ouverture de distribution au niveau ou au-dessus d'une quantité fixe, même si la partie diaphragme se déforme et adhère à la surface de paroi interne.
PCT/JP2019/002681 2018-01-30 2019-01-28 Émetteur et tube d'irrigation goutte à goutte Ceased WO2019151176A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19746994.3A EP3747261A4 (fr) 2018-01-30 2019-01-28 Émetteur et tube d'irrigation goutte à goutte
CN201980010694.8A CN111655024A (zh) 2018-01-30 2019-01-28 发射器及滴灌用输送管
US16/965,613 US20210037727A1 (en) 2018-01-30 2019-01-28 Emitter and drip irrigation tube
IL276394A IL276394A (en) 2018-01-30 2020-07-29 Emitter and drip irrigation tube

Applications Claiming Priority (4)

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JP2018013562 2018-01-30
JP2018-013562 2018-01-30
JP2018-034752 2018-02-28
JP2018034752A JP2019129807A (ja) 2018-01-30 2018-02-28 エミッタおよび点滴灌漑用チューブ

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163622A (en) * 1989-09-08 1992-11-17 Agroteam Consultants Ltd. Drip irrigation line and method of making same
JPH09248078A (ja) * 1996-03-14 1997-09-22 Mitsui Petrochem Ind Ltd 灌水ホース
JP2016220577A (ja) * 2015-05-28 2016-12-28 株式会社エンプラス エミッタおよび点滴灌漑用チューブ
JP2017042106A (ja) * 2015-08-27 2017-03-02 株式会社エンプラス エミッタおよび点滴灌漑用チューブ
WO2017093882A1 (fr) 2015-12-03 2017-06-08 Netafim Ltd Goutteur
WO2017098858A1 (fr) * 2015-12-09 2017-06-15 株式会社エンプラス Émetteur et tube d'irrigation goutte-à-goutte
JP2018013562A (ja) 2016-07-20 2018-01-25 株式会社サイバーウォーカー 仮想現実システムに於ける外部制御手段
JP2018034752A (ja) 2016-09-02 2018-03-08 オートリブ ディベロップメント エービー カーテンエアバッグ装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163622A (en) * 1989-09-08 1992-11-17 Agroteam Consultants Ltd. Drip irrigation line and method of making same
JPH09248078A (ja) * 1996-03-14 1997-09-22 Mitsui Petrochem Ind Ltd 灌水ホース
JP2016220577A (ja) * 2015-05-28 2016-12-28 株式会社エンプラス エミッタおよび点滴灌漑用チューブ
JP2017042106A (ja) * 2015-08-27 2017-03-02 株式会社エンプラス エミッタおよび点滴灌漑用チューブ
WO2017093882A1 (fr) 2015-12-03 2017-06-08 Netafim Ltd Goutteur
WO2017098858A1 (fr) * 2015-12-09 2017-06-15 株式会社エンプラス Émetteur et tube d'irrigation goutte-à-goutte
JP2018013562A (ja) 2016-07-20 2018-01-25 株式会社サイバーウォーカー 仮想現実システムに於ける外部制御手段
JP2018034752A (ja) 2016-09-02 2018-03-08 オートリブ ディベロップメント エービー カーテンエアバッグ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3747261A4 *

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