JP2007152281A - Sprinkler nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a useful sprinkler nozzle extremely excellent in workability, which enables an assured communication with a sprinkling passage and a bypass without the need to consider a directionality of a topside ring member and a downside ring member. <P>SOLUTION: The sprinkler nozzle is provided with the sprinkling passage 10 between the topside ring member 3b and the downside ring member 3a fitted into a tip opening 2 of a nozzle body 1. For example, the downside ring member 3a is provided with the bypass 11 communicating with the sprinkling passage 10. The bypass 11 is set on a through hole communicating with the sprinkling passage 10 on one end, and communicating with the outside of the nozzle body 1 on the other end, and a circumferential groove 12 communicating with the bypass 11 is provided on an inner periphery wall surface 18 of the downside ring member 3a to allow the circumferential groove 12 and the sprinkling passage 10 to communicate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a watering nozzle.

  For example, as a water spray nozzle that is buried in the road surface and performs snow removal on this road surface, a fitting recess into which a ring member can be fitted is provided at the tip opening of the nozzle body, and a valve body is inserted into the ring member. A hole is formed, and the insertion hole is provided with a locking step portion that locks the locking portion of the head of the valve body, and the valve body includes a screwing portion provided in the water passage of the nozzle body. A screw part to be screwed is provided, the valve body is inserted into the insertion hole, and the screw part is screwed to the screw part so that the ring member is fixed to the nozzle body in a pressed-down state. Things are common.

  By the way, the watering path of the watering nozzle embedded in the road surface is likely to be clogged with foreign matters such as dust, and the watering may be hindered by the foreign matters.

  At this time, in the watering nozzle in which a plurality of watering channels are in communication, the amount of watering from other watering channels is increased by the amount of watering in the watering channel clogged with foreign matter, and this watering is clogged. Not only can the snow on the surface of the irrigation channel be well removed, the desired snow erasing effect is not obtained, but the amount of water sprayed from the other water irrigation channels becomes excessive, and the desired snow erasing effect is also found in this respect. Of course, the snow on the road surface cannot be removed efficiently, and ground subsidence due to excessive pumping of groundwater may be promoted. Since it may blow out to the height, traffic of people and vehicles may be hindered.

  In order to solve the above-mentioned problem, a watering nozzle as disclosed in Japanese Patent No. 2794767 (Patent Document 1) has been proposed, but the watering nozzle disclosed in Patent Document 1 is a watering channel. Although it is provided with a bypass path that communicates, even if foreign bodies are clogged in the waterway, water can be sprayed from the bypass road, and the amount of water sprayed from other waterways without clogging can be prevented. Thus, even when the bypass passage is provided in the sprinkling passage, the phenomenon similar to the above will occur after the bypass passage is clogged, and the fundamental solution has not been achieved.

  Therefore, the applicant has applied for Japanese Patent Application No. 2004-371897 to solve the above problem. According to this Japanese Patent Application No. 2004-371897, the clogging of the bypass passage can be easily eliminated by removing the ring member, and the life of the watering nozzle can be increased.

Japanese Patent No. 2794767

  The present invention is an improvement technique of the above-mentioned Japanese Patent Application No. 2004-371897, and positioning work for matching the watering path and the bypass path for communicating the watering path and the bypass path, which has been essential in the past, is unnecessary. It is an object of the present invention to provide a practical watering nozzle excellent in workability capable of reliably communicating a watering passage and a bypass passage without considering the directivity of the ring member and the lower ring member.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A fitting recess 4 into which the ring member 3 can be fitted is provided in the tip opening 2 of the nozzle body 1, and the ring member 3 fitted into the fitting recess 4 is a lower ring member fitted into the fitting recess 4. 3a and an upper ring member 3b fitted into the lower ring member 3a, and through holes 6 and 7 through which the valve body 5 is inserted are formed in the lower ring member 3a and the upper ring member 3b, respectively. The insertion hole 7 of the upper ring member 3b is provided with a locking step portion 7a for locking the locking portion 8a of the head portion 8 of the valve body 5, and the valve body 5 has a water passage portion of the nozzle body 1. 9 is provided with a threaded portion 5a that is threadedly engaged with the threaded portion 9a, the valve body 5 is inserted into the insertion holes 6 and 7, and the threaded portion 5a is threadedly engaged with the threaded portion 9a. The ring member 3 is fixed to the nozzle body 1 in a pressed-down state, and between the lower ring member 3a and the upper ring member 3b, A sprinkling passage 10 is formed in communication with the outside of the main body 1 to regulate the direction and angle of water whose flow rate is adjusted by the valve body 5, and is formed in the lower ring member 3 a or the upper ring member 3 b. A bypass passage 11 communicating with the water sprinkling passage 10 is provided, and the bypass passage 11 is set to a through hole having one end communicating with the water sprinkling passage 10 and the other end communicating with the outside of the nozzle body 1. By providing a circumferential groove 12 that communicates with the bypass passage 11 in the inner circumferential wall surface 18 of the side ring member 3a or the outer circumferential wall surface 19 of the upper ring member 3b, the circumferential groove 12 and the water sprinkling passage 10 are communicated with each other. When the watering from the watering channel 10 becomes impossible or when the watering amount decreases, the amount of water discharged to the outside through the bypass channel 11 through the circumferential groove 12 increases. The present invention relates to a watering nozzle characterized by being configured.

  2. The watering nozzle according to claim 1, wherein a plurality of the bypass passages 11 are provided in the circumferential groove 12, and the bypass passages 11 are in communication with each other. .

  Further, the resistance of the path through which water passes when discharged outside through the bypass path 11 is greater than the resistance of the path through which water passes when discharged outside through the sprinkling path 10. It concerns on the watering nozzle of any one of Claim 1, 2 characterized by the above-mentioned.

  Moreover, when the said ring member 3 was decomposed | disassembled into the lower side ring member 3a and the upper side ring member 3b, it comprised so that the both ends of the bypass path 11 might be in a surface exposed state. This relates to the watering nozzle described in any one of the items.

  In addition, a straight hole is provided in the lower ring member 3a or the upper ring member 3b so as to connect the water sprinkling passage 10 and the outside of the nozzle body 1 and this straight hole is set as the bypass passage 11. It concerns on the watering nozzle of any one of Claims 1-4 characterized by the above-mentioned.

  Further, the circumferential groove 12 is provided with deep groove portions 13 at predetermined intervals, and the one end of the bypass passage 11 is provided at the bottom of the deep groove portion 13 so that the circumferential groove 12 and the bypass passage 11 communicate with each other. The watering nozzle according to any one of claims 1 to 5, wherein the watering nozzle is configured.

  The watering nozzle according to claim 1, wherein the water discharged through the bypass passage 11 is configured to ooze and be discharged around the nozzle body 1. It is related to.

  Since the present invention is configured as described above, the sprinkling channel and the bypass channel can be communicated with each other via the circumferential groove of the lower ring member or the upper ring member, and the direction of the upper ring member and the lower ring member Therefore, it is a practical watering nozzle excellent in workability that can reliably connect the watering passage and the bypass passage without considering the performance.

  In the inventions according to claims 2 to 7, the present invention can be realized more easily and more practically.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  Water is sprayed from a sprinkling passage 10 provided in the ring member 3 of the nozzle body 1 embedded in the road surface, and the snow on the road surface is removed. At this time, even if foreign matter such as gravel is clogged in the water sprinkling channel 10, water will be detoured and discharged from the bypass channel 11 communicating with the water sprinkling channel 10, and from other water sprinkling channels 10 that are not clogged with foreign matter. It is possible to reliably prevent excessive water spraying.

  Further, the bypass channel 11 communicating with the water spray channel 10 communicates with the circumferential groove 12 provided on the inner circumferential wall surface 18 of the lower ring member 3a (or the outer circumferential wall surface 19 of the upper ring member 3b). By connecting the watering channel 10 to 12, even if the watering channel 10 does not coincide with the bypass channel 11, water can be discharged from the bypass channel 11 through the circumferential groove 12. Therefore, the lower ring member 3a and the upper ring member 3b can be fastened to the nozzle body 1 without performing positioning work, and the workability of attaching to the road surface is improved accordingly.

  That is, for example, by providing an annular or arc-shaped circumferential groove 12 on the inner circumferential wall surface 18 of the lower ring member 3a (or the outer circumferential wall surface 19 of the upper ring member 3b), the circumferential groove 12 and the water spray channel 10 The area where the water passage can be communicated is expanded as compared with the area where the bypass passage 11 and the water sprinkling passage 10 which are through-holes can communicate directly with each other, and the positioning operation of the water sprinkling passage 10 with respect to the bypass passage 11 is facilitated accordingly. .

  In addition, when a plurality of bypass passages 11 are provided in the circumferential groove 12 and these bypass passages 11 are communicated, even if one of the bypass passages 11 is clogged, water is bypassed and discharged from the other bypass passages 11. In addition to the case where the sprinkling channel 10 is clogged, the bypass discharge can also be performed when the bypass channel 11 is clogged, so that the maintenance performance is excellent.

  Further, in the present invention, since the water sprinkling channel 10 is provided between the lower ring member 3a and the upper ring member 3b, the ring member 3 is simply removed to the lower ring member 3a and the upper ring member 3b. By simply disassembling, the sprinkling channel 10 can be easily cleaned, and in addition, for example, when the bypass member 11 is disassembled into the lower ring member 3a and the upper ring member 3b, By configuring so as to be in an exposed state, the bypass passage 11 can be easily cleaned, and extremely excellent in maintenance and durability.

  Further, for example, when the deep groove portion 13 is formed at a predetermined interval in the circumferential groove 12, and the one end of the bypass passage 11 is provided at the bottom of the deep groove portion 13, water is accumulated in the deep groove portion 13 to increase the flow velocity. By weakening, it can be exuded and discharged well.

  Therefore, according to the present invention, the sprinkling channel and the bypass channel can be communicated with each other via the circumferential groove of the lower ring member or the upper ring member, and there is no need to consider the directionality of the upper ring member and the lower ring member. It becomes a practical watering nozzle excellent in workability capable of reliably communicating the watering path and the bypass path.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, the fitting recess 4 into which the ring member 3 can be fitted is provided in the tip opening 2 of the nozzle body 1, and the ring member 3 fitted into the fitting recess 4 is fitted into the fitting recess 4. A lower ring member 3a and an upper ring member 3b fitted into the lower ring member 3a, and through holes 6, 7 through which the valve body 5 is inserted into the lower ring member 3a and the upper ring member 3b. The upper ring member 3b is provided with a locking step portion 7a for locking the locking portion 8a of the head portion 8 of the valve body 5, and the valve body 5 has the nozzle body. 1 is provided with a threaded portion 5a that is threadedly engaged with the threaded portion 9a. The valve body 5 is inserted into the insertion holes 6 and 7, and the threaded portion 5a is threaded with the threaded portion 9a. The ring member 3 is fixed to the nozzle body 1 in a pressed-down state by combining the lower ring member 3a and the upper ring member 3b. A watering passage 10 is formed in communication with the outside of the nozzle body 1 to regulate the water jetting direction and the jetting angle, the flow rate of which is adjusted by the valve body 5, and the lower ring member 3 a or the upper ring member The annular member 3b is provided with a bypass passage 11 that communicates with the water sprinkling passage 10, and the bypass passage 11 is set as a through-hole that communicates with the water sprinkling passage 10 at one end and communicates with the outside of the nozzle body 1 at the other end. In addition, a circumferential groove 12 communicating with the bypass passage 11 is provided on the inner circumferential wall surface 18 of the lower ring member 3a or the outer circumferential wall surface 19 of the upper ring member 3b, and the circumferential groove 12 and the watering passage 10 are connected to each other. By allowing communication, when watering from the watering channel 10 becomes impossible or when the watering amount decreases, the amount of water discharged to the outside through the bypass channel 11 via the circumferential groove 12 is reduced. It is configured to increase.

  Each part will be specifically described.

  The nozzle body 1 has a configuration in which a fitting recess 4 into which the ring member 3 can be fitted is provided in the tip opening 2. The ring member 3 fitted into the fitting recess 4 is composed of a lower ring member 3a fitted into the fitting recess 4 and an upper ring member 3b fitted into the lower ring member 3a, and this lower ring member. The upper part of the inner peripheral wall surface 3a of 3a and the upper part of the outer peripheral wall surface 19 of the upper ring member 3b are set to taper surfaces 18a and 19a, respectively, and the lower parts are set to vertical surfaces 18b and 19b that are cut substantially vertically. is doing. The upper ring member 3b is supported by a tapered surface 18a of the lower ring member 3a provided in a state of facing the tapered surface 19a of the upper ring member 3b.

  Accordingly, the valve body 5 inserted into the insertion hole 7 of the upper ring member 3b can be pressed and fixed to the nozzle body 1 together with the lower ring member 3a. Specifically, the insertion step 7 of the upper ring member 3 b is provided with a locking step 7 a that is locked by the locking portion 8 a of the head 8 of the valve body 5. A screw portion 5a that is screwed with a screwing portion 9a provided at a substantially central portion of the nozzle body 1 is provided, and the screw member 5a is screwed into the screwing portion 9a so as to press the ring member 3 into the nozzle main body 1 and stop. It is configured to be worn.

  The valve body 5 has a configuration in which an opening 22 is provided on a side surface, and a valve rod 21 having a flow rate regulating groove 21a that gradually widens from one end communicating with the opening 22 toward the other end is provided inside. Yes, by inserting an appropriate tool such as a screwdriver into a locking groove 23 provided in the head of the valve rod 21, and rotating the valve rod 21, the communication between the flow regulating groove 21a and the opening 22 is established. By changing the area, the flow rate of water flowing from the water passage 9 to the watering passage 10 can be controlled. Reference numeral 24 in the figure denotes a rubber plug having an insertion hole 25 into which a driver or the like can be inserted, 26 denotes an O-ring as a seal member, 27 denotes a rubber sleeve connected to a water supply pipe, and 28 denotes a valve rod 21 to a valve body 7. A spring pin 29 is rotatably held, 29 is a fixing member for fixing the valve rod 21, and 30 is a head cap of the valve rod 21.

  Further, in the present embodiment, the upper ring member 3b that rotates about the valve body 5 and the nozzle body 1 are provided with anti-rotation locking portions 16 and 17, respectively, and the anti-rotation mechanism provided on the upper ring member 3b. The stop portion 16 is configured to be able to prevent the upper ring member 3b from being over-rotated by abutting and locking with a detent stop portion 17 provided in the nozzle body 1.

  That is, the anti-rotation locking portions 16 and 17 are provided between the nozzle body 1 and the upper ring member 3b. Specifically, the anti-rotation locking portions 16 provided on the upper ring member 3b include The upper ring member 3b protrudes from the lower surface of the upper ring member 3b. When the upper ring member 3b is fitted into the lower ring member 3a, the upper ring member 3b is set so as to protrude downward from the insertion hole 6 of the lower ring member 3a. . The anti-rotation locking portion 17 provided on the nozzle body 1 is engaged with the anti-rotation locking portion 12 provided on the upper ring member 3b protruding from the insertion hole 6 at a position above the screwing portion 9a. It is provided at the position to do.

  In the present embodiment, as the anti-rotation locking portion 16 of the nozzle body 1, a pair of convex portions are provided on the lower surface of the upper ring member 3b so as to face each other, and as the anti-rotation locking portion 17 of the upper ring member 3b, the nozzle body A small-diameter portion 15 is provided between the fitting concave portion 4 and the threaded portion 9a as one water passage 9, and a convex portion projecting toward the upper ring member 3b is provided on the small-diameter portion 15 as the detent member. A plurality of stop portions 16 are provided at intervals at which the stop portions 16 can be substantially fitted.

  Therefore, the rotation prevention latching part 16 of the nozzle body 1 is fitted between the rotation prevention latching parts 17 of the upper ring member 3b in an arbitrary direction, thereby reliably preventing the rotation of the upper ring member 3b. The water can be sprayed in a desired direction.

  The upper locking member 16 provided in the upper ring member 3b in the state in which the upper ring member 3b is fitted in the fitting recess 4 abuts against the rotation locking portion 17 provided in the nozzle body 1. A predetermined range until stopping can be freely rotated to change the water ejection direction. In this case, the upper ring member 3b is not only prevented from being excessively rotated, It is possible to change the watering direction more easily by turning. Moreover, as will be described later, even if the upper ring member 3b is rotated, the communication between the water sprinkling passage 10 and the bypass passage 11 is not released, and a state in which the bypass discharge from the bypass passage 11 is always possible can be set.

  Accordingly, the nozzle body 1 is embedded in the road surface, and the upper ring member 3b is rotated by the vehicle or the like, so that the screwing of the screw part 5a and the screwing part 9a of the valve body 5 is surely prevented. Of course, it is excellent in safety, and it is excellent in workability that the upper ring member 3b can be easily rotated to change the watering direction by the watering passage 10.

  Further, in the present embodiment, not only the watering path 10 but also the bypass path 11 communicating with the watering path 10 is provided in the ring member 3, and even when the watering path 10 is clogged by the bypass path 11, good watering can be performed. In addition, even if the watering passage 10 and the bypass passage 11 are clogged, the watering passage 10 and the bypass passage 11 can be easily cleaned to eliminate the clogging, and the ring member 3 can be easily attached and detached, It is possible to extend the service life of the watering nozzle by taking advantage of its excellent maintainability.

  Specifically, as shown in FIGS. 1 and 2, the bypass path 11 is provided on the lower ring member 3 a so that both ends thereof are exposed, and the ring member 3 is removed from the nozzle body 1. By disassembling the lower ring member 3a and the upper ring member 3b, both end portions of the bypass path 11 can be exposed. For example, foreign substances clogged from one end side to the other end side of the bypass path 11 can be removed. This foreign matter can be removed by pushing.

  More specifically, the bypass passage 11 has one end communicating with the water sprinkling passage 10 and the other end connected with the outer peripheral wall surface 31 of the lower ring member 3a and the inner peripheral wall surface of the fitting recess 4 of the nozzle body 1. A gap 32 communicating with the outside of the nozzle body 1 is formed between the nozzle body 1 and the nozzle body 1. That is, in the present embodiment, the water that is detoured and discharged from the sprinkling channel 10 is exuded and discharged from the outer periphery of the nozzle body 1 through the circumferential groove 12, the bypass channel 11, and the gap 32. become.

  The sprinkling channel 10 has a configuration provided between the inner peripheral wall surface 18 of the lower ring member 3a and the outer peripheral wall surface 19 of the upper ring member 3b. Specifically, the water spray channel 10 is provided between the tapered surfaces 18a and 19a of the lower ring member 3a and the upper ring member 3b.

  More specifically, a linear groove 20 extending from the lower end to the upper end is formed on the tapered surface 19a of the upper ring member 3b, and the taper of the groove 20 and the lower ring member 3a is formed. A sprinkling channel 10 is formed with the surface 18a, and water passing through the valve body 7 is introduced from the lower end side of the concave groove 20, and water is sprinkled from the upper end side.

  Accordingly, the water sprinkling channel 10 can be configured without the need to make a hole in the ring member 3, and the ring member 3 is detached from the nozzle body 1 and disassembled into the lower ring member 3a and the upper ring member 3b. Cleaning of the sprinkling channel 10 can be performed very easily.

  Further, the water sprinkling channel 10 is configured so that water can be sprinkled simultaneously in a plurality of directions from the tip of the nozzle body 1. That is, a plurality of sprinkling passages 10 are provided at a predetermined interval between the inner peripheral wall surface 18 of the lower ring member 3a and the outer peripheral wall surface 19 of the upper ring member 3b, so that snow can be removed efficiently. In the present embodiment, it is configured to be provided at four locations at intervals of 90 degrees.

  The bypass passage 11 is configured to communicate with the water sprinkling passage 10 and the gap portion 32, that is, a through hole penetrating from the inner peripheral wall surface 18 to the outer peripheral wall surface 31 of the lower ring member 3a. Specifically, an annular circumferential groove 12 is formed on the tapered surface 18a of the inner circumferential wall surface 18 of the lower ring member 3a, and a plurality of bypass paths 11 are provided in the circumferential groove 12, and each bypass path is provided. 11 is configured to communicate with each other. In the present embodiment, bypass paths 11 are provided at 12 locations at intervals of 30 degrees. The number of bypass passages 11 is appropriately set according to the number of the water sprinkling passages 10, the cross-sectional area, and the like. In the present embodiment, the circumferential groove 12 is provided in the entire circumference of the tapered surface 18a in an annular shape. However, the circumferential groove 12 is provided in a circumferential direction such as a substantially arcuate groove provided in a predetermined range instead of the entire circumference. Any other configuration may be used as long as it can extend and intersect the water sprinkling channel 10.

  That is, one end of the lower ring member 3a opens into the circumferential groove 12 provided in the tapered surface 18a of the lower ring member 3a, and the other end opens to the outer peripheral wall surface 31 of the lower ring member 3a. A straight hole is formed, and the straight hole is set in the bypass passage 11 communicating with the sprinkling passage 10 and the outside of the nozzle body 1, and the one ends of the bypass passage 11 are communicated with each other via the circumferential groove 12. Yes.

  Therefore, the bypass passage 11 can be obtained by simply removing the ring member 3 from the nozzle body 1 and disassembling the ring member 3 into a lower ring member 3a and an upper ring member 3b. Even if foreign matter is exposed on the peripheral wall surface 18 and the outer peripheral wall surface 31 and the bypass passage 11 is clogged, it can be easily removed simply by pushing the foreign matter from one end side to the other end side of the bypass passage 11. it can.

  Further, in this embodiment, as shown in FIG. 3, deep groove portions 13 are provided in the circumferential groove 12 at a predetermined interval, and one end of the bypass path 11 is opened at the bottom of the deep groove portion 13. In the figure, reference numeral 14 denotes a partition portion that partitions the deep groove portion 13 (that is, a portion where the partition portion exists is a shallow groove portion). Accordingly, the water can be retained in the deep groove portion 13 and the flow velocity can be reduced and then discharged to the outside through the bypass passage 11, so that the bleed can be discharged well around the nozzle body 1, and the pedestrian Obstructing such traffic is definitely prevented. Further, it is desirable that the cross-sectional area of the shallow groove portion formed by the partition portion 14 is set to be smaller than the diameter of the bypass passage 11 so as not to perform excessive detouring.

  In this embodiment, the concave groove 20 is formed on the outer peripheral wall surface 19 of the upper ring member 3b as described above. However, the concave groove is formed on the inner peripheral wall surface 18 of the lower ring member 3a, and the upper ring member 3b is formed. You may comprise so that the water sprinkling channel 10 may be formed with the outer peripheral wall surface 19 of the member 3b, and this concave groove.

  Further, in this embodiment, the resistance of the path through which water is discharged to the outside through the bypass path 11 is the path of the path through which water passes when the water is discharged to the outside through the sprinkling path 10. If it is set to be larger than the resistance and watering from the sprinkling channel 10 can be performed normally, the amount of water discharged to the outside through the bypass channel 11 is small, and the sprinkling channel 10 is sprinkled with foreign matter. When the water discharge becomes impossible or the water spray amount decreases, the amount of water discharged to the outside through the bypass passage 11 is set to be large.

  Specifically, a portion smaller than the cross-sectional area of the sprinkling channel 10 is formed in the through hole constituting the bypass channel 11 (for example, the cross-sectional area of the bypass channel 11 is set smaller than the cross-sectional area of the sprinkling channel 10) And set so that the resistance of the path through which it passes when it is discharged to the outside of the nozzle body 1 through the bypass path 11 is increased so that the amount of water sprayed from the water spray path 10 is increased in the normal state. Yes.

  Therefore, in this embodiment, when the resistance of the sprinkling passage 10 is increased more than the resistance on the side passing through the bypass passage 11 and the sprinkling is hindered, it is passed through the bypass passage 11 communicating with the sprinkling passage 10 to the outside. The amount of water to be discharged can be increased, and the discharge from the bypass channel 11 can reliably prevent an excessive increase (spout) of the amount of water sprayed from the other water channel 10 where water spraying is not inhibited.

  Since the present embodiment is configured as described above, when water is sprayed from the watering passage 10 provided in the ring member 3 of the nozzle body 1 embedded in the road surface and snow is removed from the road surface, foreign matter such as gravel is sprayed on the watering passage 10. Even if clogged with water, the water will be diverted from the bypass passage 11 communicating with the sprinkling passage 10, and it will be possible to reliably prevent excessive sprinkling from other sprinkling passages 10 that are not clogged with foreign matter. .

  Furthermore, since the bypass passage 11 communicating with the water sprinkling passage 10 communicates with the circumferential groove 12 provided on the inner peripheral wall surface 18 of the lower ring member 3a, the water sprinkling passage 10 is communicated with the circumferential groove 12, Even if the sprinkling passage 10 does not coincide with the bypass passage 11, it becomes possible to bypass and discharge water from the bypass passage 11 via the circumferential groove 12, and therefore, the lower ring member does not need to be positioned accurately. 3a and the upper ring member 3b can be fastened to the nozzle body 1 and the workability of attaching to the road surface is improved accordingly.

  That is, by providing the annular circumferential groove 12 on the inner circumferential wall surface 18 of the lower ring member 3a, the region where the circumferential groove 12 and the water sprinkling passage 10 can communicate with each other is the bypass passage 11 which is a through hole. The sprinkling channel 10 is expanded as compared with a region where it can be directly communicated, and the positioning operation of the sprinkling channel 10 with respect to the bypass channel 11 is facilitated accordingly.

  In addition, since a plurality of bypass passages 11 are provided in the circumferential groove 12, and these bypass passages 11 are communicated with each other, even if one of the bypass passages 11 is clogged, water can be discharged from other bypass passages 11 by bypass. In addition to the case where the sprinkling channel 10 is clogged, the detour discharge can be performed also when the bypass channel 11 is clogged, so that the maintainability is improved accordingly.

  Further, in the present embodiment, the water sprinkling channel 10 is provided between the lower ring member 3a and the upper ring member 3b, so that the ring member 3 is simply removed and the lower ring member 3a and the upper ring member 3b The sprinkling channel 10 can be easily cleaned only by disassembling the pipe, and in addition, both ends of the bypass channel 11 when the ring member 3 is disassembled into the lower ring member 3a and the upper ring member 3b. Therefore, the bypass passage 11 can be easily cleaned, and the maintenance and durability are extremely excellent.

  Further, since the deep groove portion 13 is formed in the circumferential groove 12 at a predetermined interval, and the one end of the bypass path 11 is provided at the bottom of the deep groove portion 13, it is preferable that water is accumulated in the deep groove portion 13 to reduce the flow velocity. Water can be oozed and discharged from the periphery of the nozzle body 1.

  Accordingly, in this embodiment, it is possible to connect the watering channel and the bypass channel via the circumferential groove of the lower ring member or the upper ring member, and it is necessary to consider the directionality of the upper ring member and the lower ring member. It becomes a practical watering nozzle excellent in workability capable of communicating the watering channel and the bypass channel without fail.

  In addition, this invention is not limited to a present Example, The specific structure of each component can be designed suitably.

It is a disassembled explanatory perspective view of a present Example. It is explanatory sectional drawing of a present Example. It is the expansion schematic explanatory drawing which notched a part of principal part of the present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nozzle main body 2 Front-end opening part 3 Ring member 3a Lower ring member 3b Upper ring member 4 Fitting recessed part 5 Valve body 5a Screw part 6-7 Insertion hole 7a Locking step part 8 Head 8a Locking part 9 Water flow part 9a threaded part
10 Watering canal
11 Bypass
12 Circumferential groove
13 Deep groove
18 Inner wall surface
19 Outer wall surface

Claims (7)

  The front end opening of the nozzle body is provided with a fitting recess into which the ring member can be fitted, and the ring member fitted into the fitting recess includes a lower ring member fitted into the fitting recess, and the lower ring member. Each of the lower ring member and the upper ring member is formed with an insertion hole through which the valve body is inserted, and the insertion hole of the upper ring member has a head portion of the valve body. A locking step portion for locking the locking portion is provided. The valve body is provided with a screw portion that is screwed with a threaded portion provided in the water passage portion of the nozzle body, and the valve body is inserted into the insertion hole. And, it is configured so that the ring member is fixed to the nozzle body in a pressed-down state by screwing the screw part with the screwing part, and between the lower ring member and the upper ring member, A water sprinkling passage that communicates with the outside of the nozzle body and regulates the jet direction and jet angle of water whose flow rate is adjusted by the valve body is formed. The lower ring member or the upper ring member is provided with a bypass path that communicates with the watering path, and one end of the bypass path communicates with the watering path and the other end communicates with the outside of the nozzle body. By setting a through-hole and providing a circumferential groove communicating with the bypass path on the inner circumferential wall surface of the lower ring member or the outer circumferential wall surface of the upper ring member, the circumferential groove communicates with the sprinkling channel. When the watering from the watering channel becomes impossible or when the watering amount decreases, the amount of water discharged to the outside through the bypass channel through the circumferential groove is increased. Watering nozzle characterized by.   The watering nozzle according to claim 1, wherein a plurality of the bypass passages are provided in the circumferential groove so that the bypass passages are in communication with each other.   The resistance of the path through which water passes when discharged outside through the bypass channel is set to be greater than the resistance of the path through which water passes when discharged outside through the sprinkling channel The watering nozzle according to any one of claims 1 and 2.   4. The structure according to claim 1, wherein when the ring member is disassembled into a lower ring member and an upper ring member, both end portions of the bypass path are exposed. 5. Watering nozzle.   The straight hole which connects the said watering path and the exterior of the said nozzle main body was drilled in the said lower ring member or the said upper ring member, This straight hole was set to the bypass path, The 1st characterized by the above-mentioned. The watering nozzle according to any one of 4.   A deep groove portion is provided at a predetermined interval in the circumferential groove, and the one end of the bypass passage is provided at the bottom of the deep groove portion so that the circumferential groove and the bypass passage communicate with each other. The watering nozzle of any one of Claims 1-5.   The watering nozzle according to any one of claims 1 to 6, wherein water discharged through the bypass passage is configured to ooze and be discharged around the nozzle body.

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