WO2014069031A1 - Dispositif de pulvérisation d'eau - Google Patents

Dispositif de pulvérisation d'eau Download PDF

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Publication number
WO2014069031A1
WO2014069031A1 PCT/JP2013/066036 JP2013066036W WO2014069031A1 WO 2014069031 A1 WO2014069031 A1 WO 2014069031A1 JP 2013066036 W JP2013066036 W JP 2013066036W WO 2014069031 A1 WO2014069031 A1 WO 2014069031A1
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WO
WIPO (PCT)
Prior art keywords
water
port
bypass
valve seat
flow
Prior art date
Application number
PCT/JP2013/066036
Other languages
English (en)
Japanese (ja)
Inventor
聡 小林
Original Assignee
株式会社タカギ
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 株式会社タカギ filed Critical 株式会社タカギ
Priority to KR1020157001846A priority Critical patent/KR20150079547A/ko
Priority to DE112013005193.1T priority patent/DE112013005193T5/de
Publication of WO2014069031A1 publication Critical patent/WO2014069031A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1627—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock
    • B05B1/1663—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock by relative translatory movement of the valve elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B05B1/3066—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the valve element being at least partially hollow and liquid passing through it when the valve is opened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/3073—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a deflector acting as a valve in co-operation with the outlet orifice

Definitions

  • the present invention relates to a watering device that is mainly used for horticulture, agriculture, cleaning, etc. at home and is connected to the tip of a water supply facility such as a water supply via a hose.
  • a watering nozzle that is attached to the tip of a hose and can arbitrarily switch between watering and watering is widely used for gardening, agriculture, cleaning, and the like.
  • a watering nozzle receives water from a water supply facility such as a water supply via a hose and sprays water from a watering port formed at the tip.
  • a conventional watering nozzle has a substantially cylindrical grip portion extending upward from a base end portion connected to a hose, and a substantially cylindrical nozzle portion extending forward from a substantially upper end of the grip portion.
  • a bent body such as an L shape, a dogleg shape or a pistol shape (see FIG. 1).
  • Such a water spray nozzle is provided with a water stop valve for opening and closing the flow path in the middle of the water flow path formed inside, and a water stop operation lever for operating the water stop valve body of the water stop valve is provided outside.
  • some conventional watering nozzles can switch water discharge shapes from a plurality of types such as straight discharge and shower discharge.
  • Patent Document 1 as shown in FIG. 6, the outer periphery of the upstream member 19 (nozzle body) having a flow passage formed therein and provided with a switching port 21 on the side peripheral wall is connected to the downstream member 23 (outer cylinder).
  • a watering nozzle is described which is surrounded and screwed together.
  • a nozzle port is formed at the tip of the downstream member 23, and a first communication hole (not shown) that communicates with the linear water spray port and a second communication hole (not shown) that communicates with the porous water spray port on the inner peripheral wall.
  • the switching port 21 becomes the nozzle port, the first communication hole, or the second communication hole. It is possible to switch between straight water discharge from the nozzle port, fan-shaped water discharge from the straight water spray port, and shower water discharge from the porous water spray port. In addition, it was possible to switch to a sprinkling water discharge that closes the nozzle port with an upstream member and opens it slightly, or a full surface water discharge that sprays water from all the water spray ports.
  • seal rings 25 for preventing water leakage are arranged upstream and downstream of the switching port 21 of the upstream member 19. 5 and 6, the seal ring 25 has a small inner diameter between the nozzle port of the downstream member 23 and the first communication hole and between the first communication hole and the second communication hole. Is provided with a valve seat portion 30 that can be circumscribed. A water passage portion 31 whose inner diameter gradually increases is formed downstream of the valve seat portion 30, and a plurality of ribs are formed in the water passage portion 31 at equal intervals on the circumference.
  • the seal ring 25 is temporarily brought into contact with the valve seat portion 30 and the switching port 21 is sealed by the valve seat portion 30 as shown in FIG.
  • the valve is closed, and by sliding back and forth from this valve closed state, the switching port 21 is connected to either the water portion 31 (nozzle port), the first communication hole, or the second communication hole to spray water. I was going.
  • FIG. 6B shows a state in which the switching port 21 starts to communicate with the water passage portion 31 from the valve closed state. At this time, a gap is generated between the seal ring 25 and the valve seat portion 30 and water flows out from the switching port 21 to the water passage portion 31, but a large amount of water flows through the narrow water passage portion 31, and the flow rate is rapidly increased. Then, a negative pressure is generated due to the flow velocity, and the seal ring 25 is drawn and deformed as shown by a broken line in FIG.
  • the present invention has been made to solve the above-mentioned problems, and is a watering device capable of preventing a seal ring from being pulled in by negative pressure due to a water flow when switching a switching valve of a flow path. It is an issue to provide.
  • 1st invention is a watering apparatus which has a water intake port which sprinkles the taken-in water, the watering port which sprinkles the taken-in water, and the water channel which connects the said water inlet to the said watering port, A part of said flow path And an upstream member in which a switching port is formed in the peripheral surface and a seal member is disposed in the vicinity of the switching port, and a member having a larger diameter than the upstream member, and circumscribing the seal member And a downstream member connected to the downstream side of the upstream member, and having a water passage portion having a diameter larger than that of the valve seat portion and forming a part of the flow path.
  • a switching valve that switches between a water flow state in which the switching port communicates with the water flow section. Only, and, as well as branched from the water passage section, characterized in that the formation of the bypass section merging into the water passage section from the branching position at a predetermined distance downstream.
  • the bypass portion is formed by cutting out an annular bypass portion surrounding the outside of the peripheral wall forming the valve seat portion and a part of the peripheral wall forming the valve seat portion. It consists of a slit-shaped bypass part which connects a part and the said annular bypass part.
  • water joins the water-passing portion from the switching port via the slit-shaped bypass portion and the annular bypass portion. It is characterized by passing through a bypass water supply state in which only the route is open.
  • an upstream member in which a part of the flow path is formed and a switching port is formed on the peripheral surface, and a seal member is disposed in the vicinity of the switching port, and a diameter larger than that of the upstream member.
  • a valve seat portion that can be circumscribed by the seal member, and a water passage portion that is larger in diameter than the valve seat portion and forms a part of the flow path, and is downstream of the upstream member.
  • the downstream member reciprocates in the flow channel extending direction with respect to the upstream member, thereby bringing the seal member into contact with the valve seat portion.
  • a switching valve for switching between a non-communication state where the switching port does not communicate with the water passage portion and a water passage state where the switching port communicates with the water passage portion, and branches from the water passage portion. From the above in the water flow state by merging with the water flow part at a predetermined distance downstream from By forming the bypass portion to cause turbulence in the water around the seal member, the negative pressure is reduced by the turbulence, it is possible to prevent deformation or separation of the seal member due to the water flow.
  • the bypass portion is formed by cutting out an annular bypass portion surrounding the outside of the peripheral wall forming the valve seat portion and a part of the peripheral wall forming the valve seat portion,
  • a slit-like bypass portion that connects the water passage portion and the annular bypass portion, the flow rate of water in the water passage portion that draws in the seal ring is reduced because part of the water passes through the bypass portion. Since the negative pressure is reduced by the turbulent flow, deformation or detachment of the seal member due to the water flow can be prevented.
  • (A) is a top view of the watering nozzle which concerns on 1st embodiment of this invention, (b) is the same side view.
  • (A) is a longitudinal cross-sectional view of the watering nozzle, and (b) is an enlarged view of a portion A in (a).
  • (a) is a notch perspective view
  • (b) is longitudinal cross-sectional explanatory drawing.
  • FIG. 1 and 2 show a watering nozzle as an example of a watering device.
  • This watering nozzle 1 is an instrument that performs watering by being connected to the tip of a water supply facility such as water supply via a hose in horticulture, agriculture, cleaning, and other uses. It is.
  • the watering nozzle 1 includes a grip portion 3 formed in a substantially cylindrical shape that extends upward from a base end portion that is connected to a hose or the like to form a connection port 2 for introducing water, and the grip portion.
  • the nozzle portion 4 extends forward from the upper end of the nozzle 3 and has water spouts 5a, 5b, and 5c formed at the tip thereof.
  • the grip portion 3 and the nozzle portion 4 are continuously formed in an L shape, a dogleg shape, or a pistol shape as a whole. It has a nozzle body 6 formed in a bent shape that is bent at a site.
  • front and rear in the description of the nozzle part 4 mean the extending direction of the nozzle part 4, front means the water spout 5a, 5b and 5c side of the nozzle part 4, and rear means the grip part 3 side.
  • “up and down” means up and down with respect to the ground in a state where the nozzle part 4 is parallel to the ground and the connection port of the grip part 3 is directed to the ground side.
  • the upper side, that is, the nozzle part 4 side means the lower side means the ground side, that is, the connection port 2 side.
  • a water flow path 10 extending from the connection port 2 to the water spray ports 5 a, 5 b, 5 c is formed inside the nozzle body 6.
  • the nozzle body 6 is formed by assembling a plurality of covers and hose nipples 8 covering the outer periphery to a bent water flow pipe 7, and some of these are integrally molded. Also good. POM (polyacetal) resin, ABS (acrylonitrile butadiene styrene copolymer) resin or the like can be used as the material for the water flow pipe 7, and POM is particularly preferable because of its excellent yield strength and friction durability. Therefore, POM is adopted in this embodiment.
  • the grip portion 3 is formed in a substantially cylindrical shape that extends upward from the base end portion 3a toward the nozzle portion 4, and can be operated by being gripped by a user.
  • a concavity and convexity and an O-ring for connecting to a receiving tool (not shown) attached to the hose are provided on the outer peripheral surface, and a connection for introducing water from the water supply facility to the center thereof
  • a hose nipple 8 having an opening 2 is attached below the water flow pipe 7.
  • the orientation of the grip portion 3 may be perpendicular to the extending direction of the nozzle portion 4, but as shown in FIG. May extend in the direction of crossing.
  • the nozzle portion 4 is formed in a substantially cylindrical shape extending from the upper end of the grip portion 3 to the front (the water spout side of the nozzle portion 4).
  • the watering nozzle 1 includes a water stop valve that switches between water flow and water stop in the flow path of the water flow pipe 7, and a flow rate adjustment valve that increases or decreases the flow rate of water passing through the flow path. have.
  • the water stop valve is provided on the upstream side of the flow rate adjustment valve, and has a water stop valve body 13 disposed in the flow path 10 on the grip portion 3 side of the water flow pipe 7.
  • the water stop valve body 13 is formed in a covered cylindrical shape inscribed in the water flow pipe 7, and a protruding valve body portion 13a is formed on the cover.
  • O-rings 13c and 13c are provided at two locations on the outer peripheral surface of the water stop valve body 13 so that water does not flow on the outer periphery of the water stop valve body 13, and the O ring 13c passes through the outer peripheral surface above the O ring 13c.
  • a water inlet 13b is formed. The water supplied from the base end (downward) of the water flow pipe 7 passes through the inside of the water stop valve 13, flows out from the water flow port 13 b to the outer periphery, and flows downstream.
  • the valve body portion 13 a of the water stop valve body 13 is formed with a larger diameter than the water stop valve seat 7 a provided in the water flow pipe 7 and is interposed between the hose nipple 8 and the water stop valve body 13. 14, the flow path 10 is closed by being biased toward the water stop valve seat 7a. When the valve body 13a is separated from the water stop valve seat 7a against this urging force, the flow path 10 is opened and water flows.
  • a water stop operation lever 15 is attached in front of the grip portion 3 in order to operate the water stop valve body 13.
  • the water stop operating lever 15 is attached to the lower portion of the grip portion 3 with the lower end as a fixed end, and has an upper end as a free end. Therefore, when the user holds the grip portion 3 with his / her hand, the lower end becomes the fixed end. It can be rotated in the direction.
  • the water flow pipe 7 has an opening 7 b formed on the front surface of the grip portion 3 side portion.
  • a valve opening / closing arm 16 having an L-shaped longitudinal section abuts against the water stop lever 15 at one end, abuts against the water stop valve body 13 at the other end, and is connected to the water pipe 7 with an L-shaped bent portion as a fulcrum.
  • the water stop valve body 13 is moved through the valve opening / closing arm 16 against the urging force of the coil spring 14. It can be made to separate from 7a and let water flow. Since the opening 7b of the water flow pipe 7 is always located between the two O-rings 13c and 13c of the water stop valve body 13, water does not leak from the opening 7b to the outside of the water flow pipe 7.
  • a flow rate adjusting valve capable of adjusting the amount of water spray is provided in the flow path 10 at the bent portion of the water flow pipe 7 on the downstream side of the water stop valve.
  • the flow rate adjusting valve is disposed in the flow path, and rotates to increase or decrease the flow rate of water, and is interlocked with the flow rate adjusting valve body 17 and has a grip portion. 3 and a flow rate operating member 18 that protrudes from the rear upper part of the head 3 and is rotated by the thumb.
  • the flow rate adjusting valve body is formed in a covered cylindrical shape whose lower end is always open to the flow path 10 of the grip portion, and a notch for flow rate adjustment is provided on the peripheral surface.
  • the amount of water spray can be adjusted by increasing or decreasing the area where the notch formed in the flow regulating valve body 17 and the flow path 10 on the nozzle part 4 side match.
  • the nozzle part 4 of the watering nozzle 1 is provided with a discharge switching valve for switching the water discharge shape.
  • This discharge switching valve has a water spout 5a, an upstream side member 19 composed of an upstream side fixed pipe 20 fixed to the tip of the water passage pipe and an upstream side male screw member 22 attached to the outer periphery of the water passage pipe 7.
  • the downstream side member 23 which has 5b and 5c and forms the front-end
  • the upstream side fixed pipe 20 is a tubular member connected downstream of the water flow pipe 7, and has a tip closed conically.
  • Four switching ports 21 are opened radially on the outer peripheral surface of the upstream side fixed pipe 20 at equal intervals on the circumference so that water in the flow path 10 flows out to the downstream side.
  • a seal ring 24 for preventing water leakage is fitted around the upstream end and the downstream end.
  • seal rings 25 and 25 for preventing water leakage are fitted on the upstream side and the downstream side of the switching port 21, respectively.
  • thermoplastic resin As the material of the upstream side fixed tube 20, metal, resin, or any other material may be used. However, it is necessary to form a complicated shape, it is necessary to reduce the weight, and the cost is low. It is preferable to use a thermoplastic resin.
  • POM (polyacetal) resin and PP (polypropylene) resin are preferably used because of their excellent strength. In the first embodiment, POM resin is used.
  • the upstream male screw member 22 is attached to the outer periphery of the water flow pipe 7, and a male screw portion is formed on the outer peripheral surface thereof.
  • the downstream member 23 is formed by combining a plurality of components, and forms a flow path 10 from the switching port 21 to the water spray ports 5 a, 5 b, 5 c inside.
  • a flat water spray port 5a, an inner shower water spray port 5b, and an outer shower water spray port 5c are formed on the distal end surface of the downstream member 23 in order from the center.
  • the downstream side member 23 is screwed to the male screw portion of the upstream side male screw member 22 by a female screw portion formed on the inner periphery of the base end portion, and the whole is integrally screwed to the upstream side member 19. Can be approached and separated.
  • the downstream member 23 when the downstream member 23 is turned clockwise as viewed from the user (the nozzle 4 base end side or the rear side), it is separated from the upstream member 19, and when it is turned counterclockwise, the upstream member 19 is moved to the upstream member 19.
  • the direction of screw connection may be reversed.
  • the downstream member 23 has an inner wall along the outer shape of the upstream fixed tube 20.
  • a first hollow portion 26 communicating with the outer shower sprinkling port 5c and a second hollow portion 27 communicating with the inner shower sprinkling port 5b are opened in this inner wall in order from the upstream side.
  • a horizontally long flat water spout 5a is formed at the tip of the inner wall. For this reason, as shown in FIG. 2, when the downstream member 23 is in the position closest to the upstream member 19 (upstream side), the switching port 21 is in the space to the flat water spray port 5 a at the tip of the downstream member 23. The flat watering which spreads in the horizontal direction from the flat watering opening 5a is performed.
  • a valve closed state in which the flow path 10 is closed may be provided between the spot shower watering position and the shower watering position.
  • the switching port 21 communicates with the first hollow portion 26 or the second hollow portion 27 or a state where the switching port 21 does not communicate with the flat water spray port 5a as in the valve closed state is not communicated. It is called a state. Moreover, it may be called a watering state in a flat watering state.
  • the discharge switching valve is provided with a bypass portion 29 for preventing the seal ring 25 from being detached.
  • the bypass portion 29 is provided in the tip nozzle tube 28 that is one of the components constituting the downstream side member 23.
  • the tip nozzle tube 28 is a tubular member having a flat water spout 5 a at the tip, and circumscribes the downstream side of the upstream fixed tube 20 so as to be displaceable.
  • the tip nozzle tube 28 is provided with a valve seat portion 30 having a small inner diameter.
  • the valve seat portion 30 circumscribes seal rings 25 and 25 provided on the upstream side and the downstream side of the switching port 21, and a water passage portion 31 described later from the switching port 21.
  • the switching port 21 is communicated with the second hollow portion 27.
  • the inner diameter (radius) R1 of the valve seat portion 30 is 7.975 mm.
  • the outer diameter (radius) of the seal ring 25 is 8.005 mm in a natural state.
  • R1 is too small, the flow path is narrowed and the amount of sprinkling is reduced, so that it is preferably 5 mm or more, more preferably 6 mm or more.
  • Increasing R1 increases the flow path and increases the amount of sprinkling.
  • it increases the size of the apparatus, so it is preferably 15 mm or less, and more preferably 12.5 mm or less.
  • a water passage portion 31 having an inner diameter that gradually increases is provided on the downstream side of the valve seat portion 30, a water passage portion 31 having an inner diameter that gradually increases is provided.
  • the gradient P at which the inner diameter of the water passage portion 31 gradually increases is about 12 degrees.
  • the water passage portion 31 has a function of introducing the seal ring 25 into the valve seat portion 30 when shifting from the flat water spray state to the non-communication state, in addition to the function of passing water in the flat water spray state.
  • the outer side of the peripheral wall that forms the valve seat portion 30 and the water passage portion 31 is surrounded by an annular bypass portion 29a that is an annular flow passage extending downstream.
  • the difference between the inner diameter and the outer diameter of the annular bypass portion 29a, that is, the thickness T of the annular bypass portion 29a is 0.7 mm.
  • the thickness T of the annular bypass portion 29a is preferably as large as possible within a range in which the strength of the valve seat portion 30 can be maintained. From the viewpoint of securing the flow rate of the annular bypass portion 29a, the thickness T is preferably 0.2 mm or more, and more preferably 0.5 mm or more. Further, if the thickness T becomes too large, the apparatus becomes large, so that it is preferably 8 mm or less, more preferably 4 mm or less, and particularly preferably 1.5 mm or less.
  • the water flow portion 31 and the annular bypass portion 29 a are connected by a slit-shaped bypass portion 29 b in which the peripheral wall is cut out in a slit shape from a part on the downstream side of the valve seat portion 30 to the water flow portion 31.
  • the width of the slit-like bypass portion 29b is 0.75 mm at the root portion, and spreads in the circumferential direction with an inclination of 3 degrees toward the downstream side.
  • the width of the slit-like bypass part 29b is preferably 2.5 mm or less, and preferably 1.0 mm or less in order to prevent the negative pressure of water flowing through the slit-like bypass part 29b from deforming the seal ring 25. Is more preferable.
  • the width of the slit-like bypass portion 29b is preferably 0.1 mm or more, more preferably 0.2 mm or more, The thickness is particularly preferably 0.5 mm or more.
  • the slit-shaped bypass portion 29b is expanded at an inclination of 3 degrees toward the downstream side, so that a mold necessary for forming the slit-shaped bypass portion 29b can be easily removed during manufacturing. This inclination is preferably 30 degrees or less, more preferably 10 degrees or less, and more preferably 5 degrees or less in order to prevent the negative pressure of water flowing through the slit-like bypass portion 29b from deforming the seal ring 25.
  • Eight slit-shaped bypass portions 29b are formed on the peripheral walls of the valve seat portion 30 and the water passage portion 31 at equal intervals on the circumference.
  • the number of the slit-shaped bypass portions 29b is one or more and is not particularly limited. However, it is preferable to form three or more, and particularly preferably six or more, for the dispersion of the water flow. In the case where a plurality of slit-like bypass portions 29b are provided, it is preferable to arrange them at equal intervals or at equal angles on the circumference of the flow path or symmetrically in order to evenly distribute the water flow. Further, if the number of the slit-like bypass portions 29b is too large, the strength of the valve seat portion 30 is lowered and the processing cost is increased, so that it is preferably 20 or less, and particularly preferably 12 or less.
  • the annular bypass part 29a and the slit-like bypass part 29b are collectively referred to as a bypass part 29.
  • the water flow portion 31, the slit-shaped bypass portion 29 b, and the annular bypass portion 29 a merge at the downstream end of the peripheral wall of the water flow portion 31 to form a flow path 10 having a circular cross section.
  • the inner diameter (radius) R2 of the circular channel 10 having a circular cross section is 10.35 mm. If R2 is too small, the flow path becomes narrow and the amount of sprinkling decreases, so it is preferably 5 mm or more, more preferably 7.5 mm or more. Increasing R2 increases the flow path and the amount of sprinkling, but on the other hand, it leads to an increase in the size of the apparatus, and is preferably 17.5 mm or less, and more preferably 15 mm or less.
  • the length L in the flow path extending direction of the annular bypass portion 29a and the slit bypass portion 29b is 5.55 m. If the length L is too short, the flow rate in the vicinity of the seal ring 25 of the water passing portion 31 becomes large. If the length L is too long, the size of the apparatus is increased. It is preferable to set a value. For example, 1 mm or more and 2 mm or more are good. If L is increased, the flow path becomes longer and the size of the apparatus is increased, so 20 mm or less, and further 15 mm or less are preferable.
  • the tip nozzle tube 28 is formed using ABS resin (acrylonitrile, butadiene, styrene copolymer synthetic resin) as a material.
  • the valve seat portion 30 and the water passage portion 31 are formed separately from the tip nozzle tube 28 using ABS resin (acrylonitrile, butadiene, styrene copolymer synthetic resin) as a material, and are glued with acetone (solvent) or welder (ultrasonic welding). ) To be integrally joined to the tip nozzle tube 28.
  • such a bypass portion 29 is provided, and the water flow near the seal ring 25 becomes indefinite by generating turbulent flow in the water near the seal ring 25 in a flat watering state.
  • the negative pressure that deforms the seal ring 25 can be reduced. Therefore, it is possible to prevent the seal ring 25 from being deformed or separated by the water flow.
  • bypass part 29 composed of the annular bypass part 29a and the slit-like bypass part 29b
  • the water flowing out from the switching port 21 is dispersed in the water passing part 31, the annular bypass part 29a and the slit-like bypass part 29b.

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  • Nozzles (AREA)

Abstract

L'objet de la présente invention consiste à empêcher qu'une bague d'étanchéité soit aspirée par une pression négative produite par un écoulement d'eau pendant une commutation pour ouvrir ou fermer une soupape de changement de régime d'un canal d'écoulement. Le dispositif de pulvérisation d'eau possède un canal d'écoulement (10) reliant un orifice d'admission d'eau à un orifice de pulvérisation, et est doté d'une soupape de changement de régime qui comprend un élément en amont formant une partie du canal d'écoulement, ainsi qu'un orifice de changement de régime formé sur la surface périphérique, et un élément d'étanchéité positionné à proximité de l'orifice de changement de régime, et un élément en aval (28) possédant une partie siège de soupape (30) capable de circonscrire l'élément d'étanchéité et une partie passage d'eau (31) d'un diamètre plus grand que celui de cette partie siège de soupape (30) et formant une section du canal d'écoulement (10), et connectée au côté aval de l'élément en amont, et qui, par le biais d'un mouvement de va-et-vient de l'élément en aval (28) dans la direction d'extension du canal d'écoulement par rapport à l'élément en amont, bascule entre un état de non-passage d'eau dans lequel l'élément d'étanchéité vient buter contre la partie siège de soupape (30) de sorte que l'orifice de changement de régime ne communique pas avec la partie passage d'eau (31), et un état de passage d'eau dans lequel l'orifice de changement de régime communique avec la partie passage d'eau (31). L'invention concerne également une partie dérivation (29) qui se ramifie depuis la partie passage d'eau (31), et converge avec la partie passage d'eau (31) sur une distance prédéfinie vers le côté aval depuis l'emplacement de la ramification.
PCT/JP2013/066036 2012-10-30 2013-06-11 Dispositif de pulvérisation d'eau WO2014069031A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020157001846A KR20150079547A (ko) 2012-10-30 2013-06-11 살수 장치
DE112013005193.1T DE112013005193T5 (de) 2012-10-30 2013-06-11 Wassersprühvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012239026A JP5681159B2 (ja) 2012-10-30 2012-10-30 散水装置
JP2012-239026 2012-10-30

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WO2014069031A1 true WO2014069031A1 (fr) 2014-05-08

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JP (1) JP5681159B2 (fr)
KR (1) KR20150079547A (fr)
DE (1) DE112013005193T5 (fr)
WO (1) WO2014069031A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018089548A (ja) * 2016-11-30 2018-06-14 独立行政法人国立高等専門学校機構 洗浄機のノズル機構
WO2020205758A1 (fr) * 2019-03-29 2020-10-08 The Fountainhead Group, Inc. Ensemble buse de pulvérisation réglable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6380865A (ja) * 1986-09-24 1988-04-11 Toshio Takagi 散水用ノズル
JPH0595662U (ja) * 1992-06-03 1993-12-27 壽雄 高城 散水ノズル
JPH06277564A (ja) * 1993-03-25 1994-10-04 Kitagawa Ind Co Ltd シャワーヘッド
JP2007029943A (ja) * 2005-07-26 2007-02-08 King Yuan Wang 回転ヘッド付き散水ノズル

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6380865A (ja) * 1986-09-24 1988-04-11 Toshio Takagi 散水用ノズル
JPH0595662U (ja) * 1992-06-03 1993-12-27 壽雄 高城 散水ノズル
JPH06277564A (ja) * 1993-03-25 1994-10-04 Kitagawa Ind Co Ltd シャワーヘッド
JP2007029943A (ja) * 2005-07-26 2007-02-08 King Yuan Wang 回転ヘッド付き散水ノズル

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KR20150079547A (ko) 2015-07-08
DE112013005193T5 (de) 2015-07-16
JP2014087736A (ja) 2014-05-15
JP5681159B2 (ja) 2015-03-04

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