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WO2020184419A1 - 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
WO2020184419A1
WO2020184419A1 PCT/JP2020/009619 JP2020009619W WO2020184419A1 WO 2020184419 A1 WO2020184419 A1 WO 2020184419A1 JP 2020009619 W JP2020009619 W JP 2020009619W WO 2020184419 A1 WO2020184419 A1 WO 2020184419A1
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WO
WIPO (PCT)
Prior art keywords
emitter
pedestal
tube
irrigation liquid
groove
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/JP2020/009619
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English (en)
Japanese (ja)
Inventor
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
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Filing date
Publication date
Application filed by Enplas Corp filed Critical Enplas Corp
Publication of WO2020184419A1 publication Critical patent/WO2020184419A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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.
  • the drip irrigation method 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 a plant is planted, and an irrigation liquid such as water or liquid fertilizer is dropped from the drip irrigation tube to the soil.
  • an irrigation liquid such as water or liquid fertilizer is dropped from the drip irrigation tube to the soil.
  • the drip irrigation method has attracted particular attention because it can minimize the consumption of irrigation liquid.
  • the drip irrigation tube is a tube in which a plurality of through holes for discharging the irrigation liquid are formed, and a plurality of emitters (“) for discharging the irrigation liquid from each through hole, which is joined to the inner wall surface of the tube. Also called “dripper").
  • Fluids such as air and water containing fine soil may flow back from the outside of the tube into the flow path of the emitter. This may cause clogging in the emitter.
  • the invention described in Patent Document 1 solves such a problem by providing a water-sealing accommodating portion in the emitter.
  • the emitter described in Patent Document 1 reduces the occurrence of clogging by preventing the backflow of fluid. However, once fine soil or the like gets into the emitter of the emitter described in Patent Document 1 for some reason, clogging may occur due to the fine soil or the like.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an emitter capable of suppressing the occurrence of clogging even if fine soil or the like gets into the emitter. It is also an object of the present invention to provide a drip irrigation tube using the above emitter.
  • the emitter according to the present invention is joined to a position on the inner wall surface of a tube through which an irrigation liquid flows, corresponding to a discharge port communicating with the inside and outside of the tube, and the irrigation liquid in the tube is quantified from the discharge port.
  • It is an emitter for discharging to the outside of the tube, and has an emitter main body, a pedestal portion accommodated in the emitter main body, and a rotary blade, and the emitter main body takes in the irrigation liquid.
  • the pedestal portion is accommodated by communicating with the water intake part of the above, a decompression flow path groove for forming a decompression flow path for flowing the irrigation liquid while depressurizing the irrigation liquid, and the decompression flow path groove.
  • a diaphragm portion that is flexible and deforms toward the pedestal portion when the pedestal portion is accommodated in the accommodating portion and is subjected to the pressure of the irrigation liquid in the tube.
  • the pedestal portion has a pedestal in which the diaphragm portion under the pressure of the irrigation liquid in the tube comes into contact with the pedestal portion, and one opening of the pedestal portion opens into the pedestal, and the decompression flow path groove is used. It has a communication hole for discharging the irrigation liquid that has flowed into the accommodating portion toward the discharge port, and the rotary blade is arranged between the diaphragm portion and the pedestal portion and around the pedestal. Is configured to rotate.
  • the drip irrigation tube according to the present invention includes a tube having a discharge port for discharging an irrigation liquid, and an emitter according to the present invention joined at a position corresponding to the discharge port on the inner wall surface of the tube. Has.
  • an emitter capable of suppressing the occurrence of clogging even if fine soil or the like gets into the emitter, and a drip irrigation tube using the emitter.
  • FIG. 1 is a diagram showing a drip irrigation tube according to an embodiment of the present invention.
  • 2A to 2D are views showing the configuration of the emitter according to the embodiment of the present invention after the pedestal portion is accommodated in the accommodating portion.
  • FIG. 3A is a bottom view showing the configuration of an emitter (emitter body) according to the embodiment of the present invention before accommodating the pedestal portion in the accommodating portion, and
  • FIGS. 3B to 3E show the pedestal portion after accommodating the rotor blades. It is a figure which shows.
  • 4A to 4E are views showing rotary blades.
  • FIG. 1 is a diagram of a drip irrigation tube 100 according to an embodiment of the present invention. Note that FIG. 1 shows a state in which only the tube 110 is cut and the emitter 120 is not cut.
  • the drip irrigation tube 100 has a tube 110 and an emitter 120.
  • the tube 110 is a pipe for flowing an 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 this embodiment, the material of the tube 110 is polyethylene.
  • 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 are formed on the tube wall 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 joined to positions of the inner wall surface 112 corresponding to the discharge port 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 arranged inside the tube 110 without leakage.
  • the drip irrigation tube 100 is manufactured by joining the back surface 125 (see FIGS. 2B to D) of the emitter 120 to the inner wall surface 112.
  • the method of joining the tube 110 and the emitter 120 is not particularly limited. Examples of the method of joining the tube 110 and the emitter 120 include welding of the resin material constituting the tube 110 or the emitter 120, and bonding with an adhesive.
  • the discharge port 111 may be formed after joining the tube 110 and the emitter 120, or may be formed before joining.
  • FIG. 2A and 2B are diagrams showing the configuration of the emitter according to the embodiment after accommodating the pedestal portion 122 in the accommodating portion 135.
  • 2A is a plan view of the emitter 120
  • FIG. 2B is a bottom view
  • FIG. 2C is a left side view
  • FIG. 2D is a right side view.
  • FIG. 3A is a bottom view showing the configuration of the emitter 120 (emitter body 121) according to the embodiment before accommodating the pedestal portion 122 in the accommodating portion 135.
  • 3B to 3E are views showing the pedestal portion 122 after accommodating the rotary blade 180.
  • 3B is a plan view of the pedestal portion 122
  • FIG. 3C is a bottom view
  • FIG. 3D is a left side view
  • FIG. 3E is a right side view.
  • the emitter 120 is joined to the inner wall surface of the tube so as to cover the discharge port of the tube.
  • the shape of the emitter 120 is not particularly limited as long as it can be brought into close contact with the inner wall surface of the tube and cover the discharge port.
  • the shape of the back surface 125 joined to the inner wall surface in the cross section of the emitter 120 perpendicular to the axial direction of the tube is a substantially arc shape that is convex toward the inner wall surface along the inner wall surface.
  • the size of the emitter 120 is not particularly limited and may be appropriately determined based on a desired amount of irrigation liquid discharged from the discharge port.
  • 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 2.7 mm.
  • the emitter 120 is formed of an elastic material.
  • materials for the emitter 120 include resins, elastomers and rubbers.
  • resins include polyethylene and silicone.
  • the flexibility of the emitter 120 can be adjusted by using an elastic material. Examples of methods for adjusting the flexibility of the emitter 120 include selecting an elastic resin and adjusting the mixing ratio of the elastic resin to a hard resin material.
  • the index indicating the hardness of the material of the emitter 120 includes the durometer hardness specified in JIS K6253-3 (2012).
  • the hardness of the material of the emitter 120 is about D60 in terms of durometer hardness.
  • the durometer hardness includes type A, type D, type E, and the like, depending on the type of durometer used for measurement.
  • the durometer hardness D60 is obtained.
  • the durometer hardness is the hardest in type D, and becomes softer in the order of type A and type E.
  • the effect of suppressing the deformation of the pedestal 122 is more exhibited in the material having the durometer hardness of D60 or less.
  • the emitter 120 has an emitter main body 121, a pedestal portion 122 housed in the emitter main body 121, and a rotor blade 180.
  • the rotor 180 is placed in the pedestal 122, which is housed in the accommodating portion 135 of the emitter body 121.
  • the rotor 180 is arranged between the diaphragm portion 153 and the pedestal portion 122.
  • the emitter body 121 and the pedestal portion 122 are molded as one or as separate bodies.
  • the rotary blade 180 is preferably formed as a separate body.
  • the method of integrally molding the emitter body 121 and the pedestal portion 122 is not particularly limited.
  • the emitter body 121 and the pedestal portion 122 are integrally molded, for example, the emitter body 121, the pedestal portion 121, and the hinge portion 123 are integrally molded by injection molding. In the present embodiment, the emitter body 121 and the pedestal portion 122 are molded as separate bodies.
  • the emitter 120 has a water intake portion 131, a first connection groove 132 as a first connection flow path 142, a pressure reduction groove 133 as a decompression flow path 143, and a second connection groove 134 as a second connection flow path 144. ..
  • the rotary blade 180 is arranged between the diaphragm portion 153 and the pedestal portion 122 of the emitter main body 121, and the pedestal portion 122 is accommodated in the accommodating portion 135 of the emitter main body 121, whereby the flow rate adjusting portion 136 and the flow path An opening / closing portion 138 and a discharge portion 137 are formed.
  • a water intake portion 131 is open on the surface 124 of the emitter body 121 (emitter 120).
  • the back surface 125 of the emitter body 121 (emitter 120) has a first connection groove 132, a pressure reducing groove 133, and a second connection groove 134.
  • a discharge groove 172 is opened on the back surface 125 of the pedestal portion 122.
  • the first connection groove 132, the decompression groove 133, and the second connection groove 134 become the first connection flow path 142, the decompression flow path 143, and the second connection flow path 144, respectively.
  • it is composed of a water intake section 131, a first connection flow path 142, a decompression flow path 143, a second connection flow path 144, a flow rate adjustment section 136, and a discharge section 137, and a flow path connecting the water intake section 131 and the discharge section 137. Is formed.
  • the flow path allows the irrigation liquid to flow from the intake section 131 to the discharge section 137.
  • the water intake unit 131 is arranged in a half region of the surface 124 of the emitter body 121.
  • the number of water intake units 131 is not particularly limited. In this embodiment, one water intake unit 131 is arranged on one half surface of the emitter 120 in the long axis direction (FIG. 2A).
  • the flow rate adjusting unit 136 and the flow path opening / closing unit 138 are arranged in the region of the surface 124 where the water intake unit 131 is not arranged (FIG. 2A).
  • the water intake unit 131 has a water intake side screen unit 171 and a water intake through hole 147.
  • the water intake side screen portion 171 prevents suspended matter in the irrigation liquid taken into the emitter 120 from entering the water intake through hole 147.
  • the water intake side screen portion 171 is open in the tube and has a water intake recess 173 and a ridge 174.
  • the water intake recess 173 is a recess formed on the surface 124 of the emitter 120 in almost the entire region of one half surface on which the diaphragm portion 153 is not arranged.
  • the depth of the water intake recess 173 is not particularly limited, and is appropriately set depending on the size of the emitter 120.
  • a ridge 174 is formed on the bottom surface of the water intake recess 173. Further, a water intake through hole 147 is formed on the bottom surface of the water intake recess 173.
  • the ridge 174 is arranged on the bottom surface of the water intake recess 173.
  • the arrangement and number of the ridges 174 are not particularly limited as long as the irrigation liquid can be taken in from the opening side of the water intake recess 173 and the intrusion of suspended matter in the irrigation liquid can be prevented.
  • a plurality of ridges 174 are arranged in the major axis direction of the water intake recess 173.
  • a water intake through hole 147 is formed on the bottom surface of the water intake recess 173.
  • the ridge 174 may be formed so that the width decreases from the surface 124 of the emitter 120 toward the bottom surface of the water intake recess 173, or the same from the surface 124 of the emitter 120 to the bottom surface of the water intake recess 173. It may be formed in a width.
  • the water intake through hole 147 is formed on the bottom surface of the water intake recess 173.
  • the shape and number of the water intake through holes 147 are not particularly limited as long as the irrigation liquid taken into the water intake recess 173 can be taken into the emitter body 121.
  • the water intake through hole 147 is two elongated holes formed along the long axis direction of the bottom surface of the water intake recess 173. Since the elongated hole is covered with a plurality of protrusions 174, when viewed from the front side, the two water intake through holes 147 appear to be divided into a large number of through holes.
  • the irrigation liquid that has flowed through the tube is taken into the emitter 120 while the water intake side screen portion 171 prevents suspended matter from entering the water intake through hole 147.
  • the first connection groove 132 (first connection flow path 142) connects the water intake through hole 147 (water intake portion 131) and the decompression groove 133 (decompression flow path 143).
  • the first connection groove 132 is formed along the outer edge of the back surface 125 of the emitter 120.
  • a pressure reducing groove 133 is connected to one end of the first connecting groove 132.
  • the decompression groove 133 (decompression flow path 143) connects the first connection groove 132 (first connection flow path 142) and the second connection groove 134 (second connection flow path 144).
  • the decompression groove 133 (decompression flow path 143) reduces the pressure of the irrigation liquid taken in from the water intake unit 131, and guides the irrigation liquid toward the flow rate adjusting unit 136.
  • the pressure reducing groove 133 is arranged along the major axis direction at one end of the back surface 125 in the minor axis direction. The upstream end of the pressure reducing groove 133 is connected to the first connecting groove 132, and the second connecting groove 134 communicating with the flow rate adjusting unit 136 is connected to the downstream end.
  • the shape of the pressure reducing groove 133 is not particularly limited as long as it can exhibit the above-mentioned functions.
  • the plan view shape of the pressure reducing groove 133 is a zigzag shape.
  • substantially triangular prism-shaped convex portions 175 protruding from the inner side surface are alternately arranged along the direction in which the irrigation liquid flows.
  • the convex portion 175 is arranged so that the tip thereof does not exceed the central axis of the pressure reducing groove 133 when viewed in a plan view.
  • the second connection groove 134 (second connection flow path 144) connects the pressure reducing groove 133 (pressure reduction flow path 143) and the notch groove 150.
  • the second connection groove 134 is a groove formed linearly along the long axis direction of the emitter 120 on the back surface 125 side of the emitter 120.
  • the upstream end of the second connection groove 134 is connected to the pressure reducing groove 133, and the downstream end of the second connection groove 134 is connected to the flow rate adjusting unit 136.
  • the second connection flow path 144 is formed by the second connection groove 134 and the inner wall surface of the tube.
  • the irrigation liquid decompressed by the decompression flow path 133 is guided to the flow rate adjusting unit 136 through the second connection flow path 144.
  • the flow rate adjusting unit 136 adjusts the flow rate of the flowing irrigation liquid.
  • the flow rate adjusting unit 136 is arranged in a region where the water intake unit 131 of the emitter 120 is not arranged.
  • the flow rate adjusting unit 136 includes an accommodating unit 135, a pedestal 161, a communication hole 151, a diaphragm portion 153, and a rotary blade 180.
  • the pedestal portion 122 has a pedestal 161 and a communication hole 151, and a connecting groove 162.
  • the pedestal portion 122 has a deformation suppressing portion 152.
  • the rotor 180 is arranged in the accommodating portion 135 so as to be located between the pedestal portion 122 and the diaphragm portion 153. The rotor 180 is arranged so that it can rotate around the pedestal 161.
  • the accommodating portion 135 accommodates a pedestal portion 122 having a pedestal 161 for adjusting the amount of the irrigation liquid flowing from the second connecting flow path 143 discharged from the discharge port of the tube.
  • the rotor 180 is also accommodated in the accommodating portion 135. After the pedestal portion 122 and the rotor blade 180 are accommodated in the accommodating portion 135, the emitter 120 is joined to the inner wall surface of the tube.
  • the pedestal 161 is a region where the diaphragm portion 153 deformed by the pressure of the irrigation liquid comes into contact.
  • the shape of the pedestal 161 is not particularly limited.
  • the shape of the pedestal 161 may be a curved surface or a flat surface. In the present embodiment, the shape of the pedestal 161 is a flat surface.
  • the communication hole 151 is used to discharge the irrigation liquid that has flowed into the accommodating portion 135 toward the discharge port 137.
  • the communication hole 151 is opened in the central portion of the pedestal 161.
  • the size of the opening of the communication hole 151 is not particularly limited and can be set as appropriate.
  • the connecting groove 162 is a groove for guiding the irrigation liquid to the communication hole 151 even when the diaphragm portion 153 is in contact with the pedestal 161.
  • One end of the connecting groove 162 communicates with the communication hole 151.
  • the other end of the connecting groove 162 is arranged outside the outer edge of the contact area of the pedestal 161 in a state where the diaphragm portion 153 is in contact with the pedestal 161.
  • the deformation suppressing portion 152 contacts the tube when the diaphragm portion 153 is in contact with the pedestal 161 under the pressure of the irrigation liquid to suppress the deformation of the pedestal 161.
  • the deformation suppressing portion 152 is arranged so as to project from a surface opposite to the surface of the pedestal 161 to which the diaphragm portion 153 deformed under the pressure of the irrigation liquid comes into contact.
  • the deformation suppressing portion 152 is arranged around the opening of the communication hole 151 on the discharge port 137 side.
  • the shape of the deformation suppressing portion 152 is not limited as long as the deformation of the pedestal 161 can be suppressed.
  • the height of the deformation suppressing portion 152 may be a height that contacts the inner wall surface of the tube when placed on the tube, or may be a height that does not contact the inner wall surface of the tube.
  • the pedestal portion 122 arranged in the accommodating portion 135 and the diaphragm portion 153 facing the pedestal 161 make the emitter 120 depending on the pressure of the irrigation liquid in the tube.
  • a flow rate adjusting unit 136 for adjusting the flow rate of the irrigation liquid discharged from the communication hole 151 of the (pedestal 161) is configured.
  • the diaphragm portion 153 has a circular shape in a plan view.
  • the diaphragm portion 153 is integrally formed with another configuration of the emitter body 121.
  • the diaphragm portion 153 is flexible because it is integrally molded with the other configuration of the emitter body 121.
  • the diaphragm portion 153 is deformed toward the pedestal 161 by the pressure of the irrigation liquid in the tube in a state where the emitter 120 is joined to the inner wall surface of the tube.
  • the emitter body 121 and the pedestal portion 122 may be manufactured in a state of being connected via the hinge portion 123.
  • the hinge portion 123 connects the emitter body 121 and the pedestal portion 122 at the time of manufacturing the emitter 120.
  • the shape and size of the hinge portion 123 can be appropriately set within a range in which the above-mentioned functions can be exhibited.
  • the hinge portion 123 may be connected to the side surface 126 continuous with the back surface 125, may be arranged on the side surface located at both ends in the long axis direction (in the direction in which the irrigation liquid flows) of the emitter body 121, or may be arranged on the side surface of the emitter.
  • the hinge portion 123 is preferably connected to the side surface 126 on the upstream side or the downstream side in the direction in which the irrigation liquid flows.
  • the hinge portion 123 may be bent or may be separated from the emitter main body 121 and the pedestal portion 122 when the pedestal portion 122 is accommodated in the accommodating portion 135.
  • the hinge portion 123 is housed in a groove 164 formed in the back surface 125 of the emitter body 121.
  • the back surface 125 of the emitter 120 is appropriately joined to the inner wall surface of the tube in a state where the hinge portion 123 is housed in the groove 164 formed in the back surface 125 of the emitter body 121.
  • the groove 164 accommodates the hinge portion 123 that has been cut when the pedestal portion 122 is accommodated in the accommodating portion 135.
  • the shape of the groove 164 is not particularly limited as long as the hinge portion 123 can be accommodated and the irrigation liquid does not leak out.
  • the groove 164 is formed to be slightly smaller than the hinge portion 123.
  • the rotor blade 180 is arranged between the pedestal portion 122 and the diaphragm portion 153, and is configured to rotate around the pedestal portion 161.
  • the irrigation liquid that has flowed through the second connecting flow path 144 flows between the diaphragm portion 153 and the pedestal portion 122 through the notch groove 150.
  • the rotor 180 is rotated by the irrigation liquid that has flowed in, and winds up, for example, soil on the pedestal portion 122.
  • the rotary blade 180 suppresses the accumulation of soil and the like in the accommodating portion 135, and suppresses the occurrence of clogging in the emitter.
  • FIGS. 4A to 4E are diagrams showing the configuration of the rotary blade 180.
  • 4A is a plan view of the rotor 180 shown in FIG. 3B
  • FIG. 4B is a front view of the rotor 180 shown in FIG. 3B
  • 4C is a plan view of another rotor 180
  • FIG. 4D is a plan view of yet another rotor 180
  • FIG. 4E is a plan view of yet another rotor 180.
  • the rotary blade 180 has a plurality of blades 181 and a support portion 182 for supporting the plurality of blades 181.
  • the thickness of the support portion 182 is larger than the thickness of the blade 181 in the direction along the central axis (rotation axis) of the rotary blade 180.
  • the support portion 182 comes into contact with the pedestal portion 122, while the blades 181 do not come into contact with the pedestal portion 122.
  • the rotor 180 is easily rotated by the irrigation liquid that has flowed in.
  • the number of support portions 182 is not particularly limited, and may be one or a plurality.
  • the rotor 180 has one support 182.
  • the rotor 180 has two supports 182.
  • the position of the support portion 182 is not limited.
  • the support portion 182 is arranged on the central axis (rotation axis) side of the rotary blade 180.
  • the support portion 182 is arranged on the outer peripheral side of the rotary blade 180.
  • the support portion 182 is arranged at an intermediate point between the central portion and the outer peripheral portion of the rotary blade 180.
  • the discharge unit 137 temporarily stores the irrigation liquid from the communication hole 151.
  • the irrigation liquid that has reached the discharge unit 137 is discharged to the outside from the discharge unit 137.
  • the diaphragm portion 153 was not deformed because the pressure of the irrigation liquid was not applied to the diaphragm portion 153.
  • the diaphragm portion 153 of the flow rate adjusting portion 136 starts to be deformed toward the pedestal 161. In this state, since the diaphragm portion 153 is separated from the pedestal 161, the irrigation liquid taken in from the water intake portion 131 is discharged from the discharge port 111 of the tube 110 to the outside with almost no adjustment of the flow rate by the flow rate adjusting portion 136. It is discharged.
  • the rotor blade 180 arranged between the pedestal portion 122 and the diaphragm portion 153 starts to rotate due to the flowing irrigation liquid, and winds up the soil and the like accumulated on the pedestal portion 122.
  • the rolled up soil is discharged to the outside together with the irrigation liquid.
  • the diaphragm portion 153 When the pressure of the irrigation liquid in the tube increases, the diaphragm portion 153 further deforms toward the pedestal 161 and begins to approach the connecting hole 151. As described above, when the pressure of the irrigation liquid in the tube becomes high enough to deform the diaphragm portion 153 to some extent, the diaphragm portion 153 approaches the pedestal 161 and the amount of the irrigation liquid flowing between the diaphragm portion 153 and the pedestal 161. Is reduced. That is, the irrigation liquid taken in from the water intake unit 131 is discharged to the outside from the discharge port 111 of the tube 110 after the flow rate is adjusted by the flow rate adjusting unit 136.
  • the rotor blade 180 continues to rotate between the diaphragm portion 153 and the pedestal portion 122, and suppresses the accumulation of soil and the like.
  • the diaphragm portion 153 When the pressure of the irrigation liquid in the tube becomes higher, the diaphragm portion 153 further deforms toward the pedestal 161 and comes into contact with the pedestal 161 to close the connecting hole 151. However, since the connecting groove 162 is not blocked, the irrigation liquid flows through the connecting groove 162 and reaches the discharging portion 137 from the connecting hole 151, and a certain amount is discharged. That is, the irrigation liquid taken in from the water intake unit 131 is discharged to the outside from the discharge port 111 of the tube 110 after the flow rate is largely adjusted by the flow rate adjusting unit 136.
  • the rotor blade 180 continues to rotate between the diaphragm portion 153 and the pedestal portion 122, and suppresses the accumulation of soil and the like.
  • the pressure of the irrigation liquid exceeds the set value, the amount of deformation of the diaphragm portion 153 further increases, and the diaphragm portion 153 comes into close contact with the pedestal 161. Even in such a case, the deformation of the pedestal is suppressed by the deformation suppressing portion. Specifically, the reaction force generated when the bottom surface of the deformation suppressing portion 152 comes into contact with the inner wall surface of the tube cancels the pressure on the pedestal 161 by the diaphragm portion 153.
  • the rotor blade 180 continues to rotate between the diaphragm portion 153 and the pedestal portion 122, and suppresses the accumulation of soil and the like.
  • the rotor blade 180 may rotate only when the flow of the irrigation liquid is strong, and may wind up the accumulated soil or the like. The soil that has been rolled up is discharged to the outside of the emitter by the flow of irrigation liquid.
  • the emitter 120 since the rotor 180 rotates in the flow rate adjusting unit 136, even if dirt or the like gets into the emitter 120 (particularly in the flow rate adjusting unit 136), the emitter Accumulation of soil or the like in 120 (particularly in the flow rate adjusting unit 136) is suppressed.
  • the pedestal portion 122 is housed in the emitter main body 121, and the rotary blade 180 is arranged between the diaphragm portion 153 and the pedestal portion 122 of the emitter main body 121.
  • the emitter body and the pedestal may be integrally molded, and the diaphragm portion may be a separate body (for example, an elastic film), and the emitter may be formed by joining these. That is, the emitter may have a configuration including an emitter body, a diaphragm portion, and a rotor blade.
  • the emitter body includes a water intake, a decompression flow path groove, a pedestal, a recess that opens on the surface side of the emitter body where the pedestal is arranged, and a communication hole that discharges irrigation liquid toward the discharge port.
  • the diaphragm portion is formed by joining a film or the like having elasticity on the surface of the emitter body so as to close the concave portion that opens on the surface side.
  • the rotors are arranged to rotate around the pedestal.
  • the present invention it is possible to provide an emitter capable of suppressing clogging and a drip irrigation tube using the emitter. Therefore, it is expected that the emitter and the drip irrigation tube using the emitter will be further spread.

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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)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)

Abstract

La présente invention concerne la fourniture d'un émetteur dans lequel une obstruction peut être supprimée même lorsque de la terre fine ou similaire entre dans l'émetteur. L'émetteur comprend un corps d'émetteur et une partie de base logée dans le corps d'émetteur et une lame rotative. Le corps d'émetteur comprend une partie d'admission d'eau, une rainure de trajet d'écoulement à pression réduite, une unité de logement et une partie membrane. La partie de base comporte une base et un trou de communication. La lame rotative est disposée entre la partie membrane et la partie de base et est conçue pour tourner autour de la base.
PCT/JP2020/009619 2019-03-12 2020-03-06 Émetteur et tube d'irrigation goutte à goutte Ceased WO2020184419A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-044746 2019-03-12
JP2019044746A JP2020145945A (ja) 2019-03-12 2019-03-12 エミッタおよび点滴灌漑用チューブ

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WO2020184419A1 true WO2020184419A1 (fr) 2020-09-17

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Application Number Title Priority Date Filing Date
PCT/JP2020/009619 Ceased WO2020184419A1 (fr) 2019-03-12 2020-03-06 Émetteur et tube d'irrigation goutte à goutte

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JP (1) JP2020145945A (fr)
WO (1) WO2020184419A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138452B2 (fr) * 1972-11-30 1976-10-21
JPS59183848A (ja) * 1983-02-22 1984-10-19 レイモンド・ジエイ・ナカチヤン 潅漑用散水器
JP2018046770A (ja) * 2016-09-21 2018-03-29 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
US20180343813A1 (en) * 2017-06-06 2018-12-06 Dlhbowles, Inc. Clog resistant in-line vortex element irrigation emitter
JP2018201426A (ja) * 2017-06-06 2018-12-27 株式会社エンプラス エミッタおよびそれを有する点滴灌漑用チューブ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138452B2 (fr) * 1972-11-30 1976-10-21
JPS59183848A (ja) * 1983-02-22 1984-10-19 レイモンド・ジエイ・ナカチヤン 潅漑用散水器
JP2018046770A (ja) * 2016-09-21 2018-03-29 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
US20180343813A1 (en) * 2017-06-06 2018-12-06 Dlhbowles, Inc. Clog resistant in-line vortex element irrigation emitter
JP2018201426A (ja) * 2017-06-06 2018-12-27 株式会社エンプラス エミッタおよびそれを有する点滴灌漑用チューブ

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