JP2024044990A - Spray nozzle - Google Patents

Spray nozzle Download PDF

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JP2024044990A
JP2024044990A JP2023073584A JP2023073584A JP2024044990A JP 2024044990 A JP2024044990 A JP 2024044990A JP 2023073584 A JP2023073584 A JP 2023073584A JP 2023073584 A JP2023073584 A JP 2023073584A JP 2024044990 A JP2024044990 A JP 2024044990A
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base
communication hole
base portion
nozzle
end opening
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可賀 長谷川
Kayoshi Hasegawa
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GA-REW KK
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GA-REW KK
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Abstract

To provide a spray nozzle that can turn without rotating a head thereof.SOLUTION: A nozzle main body 16 has a cylindrical base substance part 70. A jetting part 81 has: a communicating hole 82 through which inside and outside at an intermediate position in an axial direction of the nozzle main body 16 communicate with each other in a radial direction of the base substance part 70; a convex-shape guide part 83 provided at one side in a circumferential direction of the base substance part 70 and at one side in the axial direction of the base substance part 70 with respect to the communicating hole 82 to protrude outward in the radial direction of the bae substance part 70 from the base substance part 70 while forming a portion of the communicating hole 82; and a convex-shape guide part 84 provided at the other side in the circumferential direction of the base substance part 70 and at the other side in the axial direction of the base substance part 70 with respect to the communicating hole 82 to dent inward in the radial direction of the base substance part 70 from the base substance part 70 while forming a portion of the communicating hole 82.SELECTED DRAWING: Figure 2

Description

本発明は、噴射ノズルに関する。 The present invention relates to injection nozzles.

可撓性を有する管材からなるノズルが、ノズルの内部を通過して先端から噴出する流体の力で首を振るように旋回するものがある(例えば、特許文献1参照)。 There is a nozzle made of a flexible tubular material that rotates as if swinging its head due to the force of the fluid that passes through the inside of the nozzle and sprays out from the tip (see, for example, Patent Document 1).

特開2016-165671号公報Japanese Patent Application Publication No. 2016-165671

上記のノズルは、首を振るように旋回するため、例えば穴内を洗浄する洗浄ノズルとして使用した場合に洗浄効率が劣るという課題があった。 The nozzle described above swivels like a swing, which means that it has poor cleaning efficiency when used as a cleaning nozzle to clean the inside of a hole, for example.

したがって、本発明は、首を振ることなく旋回することが可能となる噴射ノズルの提供を目的とする。 Therefore, an object of the present invention is to provide an injection nozzle that can be rotated without shaking its head.

上記目的を達成するために、本発明は、筒状部材と、基端開口部を有する円筒状をなすと共に先端側に噴出部が設けられたノズル本体と、前記ノズル本体に該ノズル本体の中心軸線の延びる方向に離間して設けられて前記ノズル本体を前記筒状部材の内周部に回転可能に支持する二つの軸受と、前記筒状部材内で前記基端開口部との間に隙間をもって配置されて前記基端開口部内に向けて加圧気体を噴出させる内部ノズル部と、を備え、前記筒状部材には、前記二つの軸受のうち前記基端開口部に近い側の軸受よりも前記内部ノズル部側に、外部に連通可能な第1外部連通部が設けられ、前記ノズル本体は、円筒状の基体部を有し、前記噴出部は、前記ノズル本体の軸方向中間位置の内外を前記基体部の径方向に連通する連通孔と、前記連通孔に対し前記基体部の円周方向における一側かつ前記基体部の軸方向における一側に、前記連通孔の一部を形成しつつ前記基体部から該基体部の径方向における外方に突出して設けられた凸状ガイド部と、前記連通孔に対し前記基体部の円周方向における他側かつ前記基体部の軸方向における他側に、前記連通孔の一部を形成しつつ前記基体部から該基体部の径方向における内方に凹んで設けられた凹状ガイド部と、を有することを特徴とする。 In order to achieve the above object, the present invention provides a nozzle body having a cylindrical shape with a base end opening and a nozzle outlet at the tip end, two bearings spaced apart in the direction of the central axis of the nozzle body and rotatably supporting the nozzle body on the inner periphery of the cylindrical member, and an internal nozzle part disposed in the cylindrical member with a gap between it and the base end opening and injecting pressurized gas into the base end opening. The cylindrical member is provided with a first external communication part that can communicate with the outside, closer to the internal nozzle part than the bearing closer to the base end opening of the two bearings, and the nozzle body is provided with a nozzle outlet at the tip end of the nozzle body. The nozzle body has a cylindrical base portion, and the ejection portion has a communication hole that connects the inside and outside of the axially intermediate position of the nozzle body in the radial direction of the base portion, a convex guide portion that is provided on one side of the base portion in the circumferential direction and one side of the base portion in the axial direction relative to the communication hole and protrudes outward from the base portion in the radial direction of the base portion while forming a part of the communication hole, and a concave guide portion that is provided on the other side of the base portion in the circumferential direction and the other side of the base portion in the axial direction relative to the communication hole and recessed inward from the base portion in the radial direction of the base portion while forming a part of the communication hole.

本発明によれば、ノズル本体の基端開口部内に向けて、この基端開口部との間に隙間をもって配置された内部ノズル部から加圧気体を噴出させると、ノズル本体内を通過した加圧気体が、ノズル本体の軸方向中間位置の内外を基体部の径方向に連通する連通孔から噴出する。その際に、連通孔に対し基体部の円周方向における一側かつ基体部の軸方向における一側に、連通孔の一部を形成しつつ基体部から基体部の径方向における外方に突出して設けられた凸状ガイド部と、連通孔に対し基体部の円周方向における他側かつ基体部の軸方向における他側に、連通孔の一部を形成しつつ基体部から基体部の径方向における内方に凹んで設けられた凹状ガイド部とによって案内されて、連通孔から基体部の円周方向における前記他側かつ基体部の軸方向における前記他側に向けて加圧気体が噴出する。これにより、二つの軸受で筒状部材に支持されたノズル本体が円周方向における前記一側に回転する。これにより、ノズル本体は、首を振らずに旋回できる。 According to the present invention, when pressurized gas is ejected from the internal nozzle portion arranged with a gap between the base end opening and the internal nozzle portion, the pressurized gas that has passed through the nozzle body is ejected from the communication hole that communicates the inside and outside of the axially intermediate position of the nozzle body in the radial direction of the base portion. At that time, the pressurized gas is ejected from the communication hole toward the other side of the base portion in the circumferential direction and the other side of the base portion in the axial direction, guided by a convex guide portion that is provided on one side of the base portion in the circumferential direction and one side of the base portion in the axial direction of the communication hole and protrudes outward from the base portion in the radial direction of the base portion, and a concave guide portion that is provided on the other side of the base portion in the circumferential direction and the other side of the base portion in the axial direction of the communication hole and recessed inward from the base portion in the radial direction of the base portion, forming a part of the communication hole. As a result, the nozzle body supported by the cylindrical member with two bearings rotates toward the one side in the circumferential direction. As a result, the nozzle body can rotate without shaking.

また、ノズル本体の基端開口部内に向けて、この基端開口部との間に隙間をもって配置された内部ノズル部から加圧気体を噴出させると、基端開口部と内部ノズル部との間に負圧が生じることになる。筒状部材には、二つの軸受のうち基端開口部に近い側の軸受よりも内部ノズル部側に、外部に連通可能な第1外部連通部が設けられているため、第1外部連通部に連通する外部から上記負圧で流体の吸引を行い、加圧気体と混合しつつ、回転するノズル本体の噴出部から噴出させることができる。 In addition, when pressurized gas is ejected from the internal nozzle part, which is arranged with a gap between it and the base end opening, toward the inside of the base end opening of the nozzle body, negative pressure is generated between the base end opening and the internal nozzle part. Since the cylindrical member is provided with a first external communication part that can communicate with the outside, closer to the internal nozzle part than the bearing that is closer to the base end opening of the two bearings, the negative pressure is used to suck in fluid from the outside that is connected to the first external communication part, and the fluid can be mixed with the pressurized gas and ejected from the ejection part of the rotating nozzle body.

本発明に係る第1実施形態の噴射ノズルを含む噴射ガンを示す側面図である。It is a side view showing an injection gun including an injection nozzle of a 1st embodiment concerning the present invention. 本発明に係る第1実施形態の噴射ノズルを示す一部を断面とした側面図である。1 is a side view, partly in cross section, showing an injection nozzle of a first embodiment according to the present invention; 本発明に係る第1実施形態の噴射ノズルの先端側の部分を示す側面図である。1 is a side view showing a tip side portion of an injection nozzle of a first embodiment according to the present invention. FIG. 本発明に係る第1実施形態の噴射ノズルの先端側の部分を示す図3のIV-IV断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 showing the tip side portion of the injection nozzle according to the first embodiment of the present invention. 本発明に係る第1実施形態の噴射ノズルの先端側の部分を示す側面図である。FIG. 2 is a side view showing the tip side portion of the injection nozzle according to the first embodiment of the present invention. 本発明に係る第1実施形態の噴射ノズルの先端側の部分を示す側面図である。1 is a side view showing a tip side portion of an injection nozzle of a first embodiment according to the present invention. FIG. 本発明に係る第1実施形態の噴射ノズルの先端側の部分を示す正面図である。1 is a front view showing a tip side portion of an injection nozzle according to a first embodiment of the present invention. FIG. 本発明に係る第1実施形態の噴射ノズルの先端側の部分を示す図7のVIII-VIII断面図である。FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7 showing the tip side portion of the injection nozzle according to the first embodiment of the present invention. 本発明に係る第2実施形態の噴射ノズルの先端側の部分を示す側面図である。FIG. 10 is a side view showing a tip side portion of an injection nozzle of a second embodiment according to the present invention. 本発明に係る第2実施形態の噴射ノズルの先端側の部分を示す図9のX-X断面図である。10 is a cross-sectional view taken along the line XX of FIG. 9, showing a tip side portion of an injection nozzle according to a second embodiment of the present invention. FIG. 本発明に係る第2実施形態の噴射ノズルの先端側の部分を示す側面図である。FIG. 7 is a side view showing a tip side portion of an injection nozzle according to a second embodiment of the present invention. 本発明に係る第2実施形態の噴射ノズルの先端側の部分を示す側面図である。FIG. 7 is a side view showing a tip side portion of an injection nozzle according to a second embodiment of the present invention. 本発明に係る第2実施形態の噴射ノズルの先端側の部分を示す側面図である。FIG. 10 is a side view showing a tip side portion of an injection nozzle of a second embodiment according to the present invention. 本発明に係る第1,第2実施形態の噴射ノズルの要部の変形例を示す断面図である。FIG. 4 is a cross-sectional view showing a modified example of a main part of the injection nozzle according to the first and second embodiments of the present invention.

[第1実施形態]
本発明に係る第1実施形態の噴射ノズルを図1~図8を参照して以下に説明する。
[First embodiment]
An injection nozzle according to a first embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

図1に示すように、第1実施形態の噴射ノズル1は、ガン本体2に取り付けられてガン本体2とで噴射ガン3を構成する。 As shown in FIG. 1, the injection nozzle 1 of the first embodiment is attached to the gun body 2, and together with the gun body 2 constitutes the injection gun 3.

ガン本体2は、加圧気体を供給する加圧気体供給源Aに連結される。ガン本体2は、加圧気体供給源Aと噴射ノズル1とに接続されて加圧気体供給源Aから噴射ノズル1への加圧気体の供給のオンおよびオフを切り替える。ガン本体2は、レバー5を引く操作で、加圧気体供給源Aの加圧気体を先端のノズル取付部6から噴射ノズル1内に噴射する。ガン本体2は、レバー5を引く操作が解除されると、加圧気体供給源Aの加圧気体のノズル取付部6からの噴射ノズル1内への噴射を停止させる。加圧気体供給源Aは、例えば、空気圧縮機やブロア等であり、加圧気体として加圧エアを供給する。 The gun body 2 is connected to a pressurized gas supply source A that supplies pressurized gas. The gun body 2 is connected to the pressurized gas supply source A and the injection nozzle 1 and switches on and off the supply of pressurized gas from the pressurized gas supply source A to the injection nozzle 1. When the lever 5 is pulled, the gun body 2 injects pressurized gas from the pressurized gas supply source A into the injection nozzle 1 from the nozzle attachment part 6 at the tip. When the operation of pulling the lever 5 is released, the gun body 2 stops the injection of pressurized gas from the pressurized gas supply source A into the injection nozzle 1 from the nozzle attachment part 6. The pressurized gas supply source A is, for example, an air compressor, a blower, or the like, and supplies pressurized air as pressurized gas.

噴射ノズル1は、ガン本体2のノズル取付部6に取り付けられて使用されるものである。噴射ノズル1において、長手方向におけるガン本体2への取り付け側つまり加圧気体の導入側を基端側とし、長手方向における基端側とは反対側つまり加圧気体の噴出側を先端側とする。 The injection nozzle 1 is used by being attached to a nozzle attachment part 6 of the gun body 2. In the injection nozzle 1, the side where it is attached to the gun body 2 in the longitudinal direction, that is, the side where the pressurized gas is introduced, is the proximal end, and the side opposite to the proximal end in the longitudinal direction, that is, the side from which the pressurized gas is ejected, is the distal end. .

図2に示すように、噴射ノズル1は、その基端部を構成する中空の内部ノズル部11と、内部ノズル部11の外周部に基端側が螺合される円筒状の筒状部材12と、筒状部材12の内周側に配置される二つの軸受13,14と、軸受13,14間に配置されてこれらの配置間隔を規定する円筒状の介在部材15と、二つの軸受13,14を介して筒状部材12の内周部に回転可能に支持される管状のノズル本体16とを有している。 As shown in FIG. 2, the injection nozzle 1 has a hollow internal nozzle section 11 that constitutes its base end, a cylindrical tubular member 12 whose base end is screwed onto the outer periphery of the internal nozzle section 11, two bearings 13, 14 that are arranged on the inner periphery of the tubular member 12, a cylindrical intervening member 15 that is arranged between the bearings 13, 14 and determines the spacing between them, and a tubular nozzle body 16 that is rotatably supported on the inner periphery of the tubular member 12 via the two bearings 13, 14.

内部ノズル部11は、その基端部を構成する中空の金属製の連結部材21と、連結部材21の先端側の内周部に螺合される中空の金属製のノズル部材22とを有している。 The internal nozzle section 11 has a hollow metal connecting member 21 that forms its base end, and a hollow metal nozzle member 22 that is screwed onto the inner periphery of the tip side of the connecting member 21.

連結部材21には、基端側の外周部にオネジ31が形成されており、先端側の外周部にもオネジ32が形成されている。連結部材21には、オネジ31とオネジ32との間の外周部に六角柱形状のナット部33が形成されており、先端側の内周部にメネジ34が形成されている。基端側のオネジ31は、図1に示すガン本体2のノズル取付部6に螺合される。 The connecting member 21 has a male thread 31 formed on the outer periphery of the proximal end, and a male thread 32 also formed on the outer periphery of the distal end. The connecting member 21 has a hexagonal column-shaped nut portion 33 formed on the outer periphery between the male screws 31 and 32, and a female thread 34 on the inner periphery on the tip side. The male screw 31 on the proximal end side is screwed into the nozzle mounting portion 6 of the gun body 2 shown in FIG.

図2に示すように、ノズル部材22には、基端側の外周部にオネジ36が形成されており、先端側が円筒状の内部噴出口37となっている。ノズル部材22には、オネジ36と内部噴出口37との間の外周部に六角柱形状のナット部38が形成されている。ノズル部材22が、基端側のオネジ36において連結部材21のメネジ34に螺合されることにより、連結部材21とで内部ノズル部11を構成する。 As shown in FIG. 2, the nozzle member 22 has a male thread 36 formed on the outer periphery on the base end side, and a cylindrical internal ejection port 37 on the tip end side. The nozzle member 22 has a hexagonal prism-shaped nut portion 38 formed on the outer periphery between the male thread 36 and the internal ejection port 37. The nozzle member 22 and the connecting member 21 form the internal nozzle portion 11 by screwing the male thread 36 on the base end side into the female thread 34 of the connecting member 21.

筒状部材12は、剛性の高い合成樹脂材料または金属材料からなる円筒状の筒状部材本体41と、金属製のストッパネジ42とからなっている。筒状部材本体41は、基端側の内周部にメネジ47が形成されており、先端側に、径方向に貫通する先端側ネジ穴48が形成されている。 The tubular member 12 is composed of a cylindrical tubular member body 41 made of a highly rigid synthetic resin material or metal material, and a metal stopper screw 42. The tubular member body 41 has a female thread 47 formed on the inner periphery on the base end side, and a tip side screw hole 48 that penetrates radially is formed on the tip side.

筒状部材本体41の内周部には、軸方向におけるメネジ47側に小径内径部51が形成され、軸方向における小径内径部51のメネジ47とは反対側に小径内径部51よりも大径の大径内径部52が形成されている。これにより、筒状部材本体41の内周部には、小径内径部51と大径内径部52との間に、筒状部材本体41の軸直交方向に広がる突当部53が形成されている。筒状部材本体41には、その軸方向における小径内径部51の位置に、筒状部材本体41を径方向に貫通する第1中間ネジ穴55と、筒状部材本体41を径方向に貫通する第2中間ネジ穴56とが形成されている。第1中間ネジ穴55と第2中間ネジ穴56とは、筒状部材本体41の軸方向における位置を合わせており、筒状部材本体41の周方向における位置を180度異ならせている。 In the inner peripheral part of the cylindrical member body 41, a small diameter inner diameter part 51 is formed on the female thread 47 side in the axial direction, and a small diameter inner diameter part 51 is formed on the side opposite to the female thread 47 of the small diameter inner diameter part 51 in the axial direction. A large inner diameter portion 52 is formed. As a result, an abutment portion 53 is formed on the inner peripheral portion of the cylindrical member main body 41 between the small diameter inner diameter portion 51 and the large diameter inner diameter portion 52, and extends in the direction perpendicular to the axis of the cylindrical member main body 41. . The cylindrical member body 41 has a first intermediate screw hole 55 that radially penetrates the cylindrical member body 41 at the position of the small diameter inner diameter portion 51 in the axial direction, and a first intermediate screw hole 55 that radially penetrates the cylindrical member body 41. A second intermediate screw hole 56 is formed. The first intermediate screw hole 55 and the second intermediate screw hole 56 are aligned in the axial direction of the cylindrical member main body 41, and are 180 degrees different in position in the circumferential direction of the cylindrical member main body 41.

筒状部材12は、その筒状部材本体41が、基端側のメネジ47において、内部ノズル部11の連結部材21の先端側のオネジ32に螺合される。これにより、筒状部材12が内部ノズル部11に取り付けられる。 The cylindrical member main body 41 of the cylindrical member 12 is screwed into the male thread 32 on the distal end side of the connecting member 21 of the internal nozzle portion 11 at the female thread 47 on the proximal end side. Thereby, the cylindrical member 12 is attached to the internal nozzle part 11.

ノズル本体16は、金属からなる円筒状の基端側のベース筒状部材61と、ベース筒状部材61よりも先端側の金属からなる円筒状の先端部材62とを有している。ノズル本体16は、全体として直線形状であり、全体が高剛性である。 The nozzle body 16 has a cylindrical base cylindrical member 61 made of metal on the proximal end side, and a cylindrical tip member 62 made of metal on the distal side of the base cylindrical member 61. The nozzle body 16 has a generally linear shape and is highly rigid as a whole.

ノズル本体16は、ベース筒状部材61の先端側が先端部材62の基端側の内周部に嵌合されており、この状態で、ベース筒状部材61と先端部材62とが溶接により接合されている。ノズル本体16は、ベース筒状部材61の軸方向における先端部材62とは反対側の端、すなわち基端が基端開口部65となっている。 In the nozzle main body 16, the distal end side of the base cylindrical member 61 is fitted into the inner peripheral part on the base end side of the distal end member 62, and in this state, the base cylindrical member 61 and the distal end member 62 are joined by welding. ing. The nozzle body 16 has a base opening 65 at the end opposite to the tip member 62 in the axial direction of the base cylindrical member 61, that is, at its base end.

図3に示すように、先端部材62は、ベース筒状部材61に嵌合されて接合される円筒状の基体部70と、ベース筒状部材61よりも先端側の第1噴出部71(噴出部)とを有している。第1噴出部71は、第1連通孔72(連通孔)と、第1凸状ガイド部73(凸状ガイド部)と、第1凹状ガイド部74(凹状ガイド部)とを有している。 As shown in FIG. 3, the tip member 62 includes a cylindrical base portion 70 that is fitted and joined to the base cylindrical member 61, and a first jetting portion 71 (spouting Department). The first ejection part 71 has a first communication hole 72 (communication hole), a first convex guide part 73 (convex guide part), and a first concave guide part 74 (concave guide part). .

第1連通孔72は、先端部材62の軸方向中間位置の内外を基体部70の径方向に連通する。 The first communication hole 72 communicates the inside and outside of the axially intermediate position of the tip member 62 in the radial direction of the base portion 70 .

第1凸状ガイド部73は、第1連通孔72に対し基体部70の円周方向における一側かつ基体部70の軸方向における一側に、図4に示すように、第1連通孔72の一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられている。第1凸状ガイド部73は、第1連通孔72とは反対側よりも第1連通孔72側の方が基体部70の径方向における外側に位置する。 As shown in FIG. It is provided so as to protrude outward from the base body part 70 in the radial direction of the base body part 70 while forming a part of the base body part 70 . The first convex guide portion 73 is located on the outer side of the base portion 70 in the radial direction on the first communication hole 72 side than on the opposite side from the first communication hole 72 .

図3に示すように、第1凹状ガイド部74は、第1連通孔72に対し基体部70の円周方向における他側かつ基体部70の軸方向における他側に、図4に示すように、第1連通孔72の一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられている。第1凹状ガイド部74は、第1連通孔72とは反対側よりも第1連通孔72側の方が基体部70の径方向における内側に位置する。 As shown in FIG. 3, the first concave guide portion 74 is located on the other side in the circumferential direction of the base portion 70 with respect to the first communication hole 72 and on the other side in the axial direction of the base portion 70, as shown in FIG. , forming a part of the first communication hole 72 and being recessed inward from the base portion 70 in the radial direction of the base portion 70 . The first concave guide portion 74 is located on the inner side of the base portion 70 in the radial direction on the first communication hole 72 side than on the opposite side from the first communication hole 72 .

第1実施形態では、第1凸状ガイド部73は、第1連通孔72に対し基体部70の円周方向における第1側かつ基体部70の軸方向におけるベース筒状部材61側(すなわち基端開口部65側)に設けられている。第1凹状ガイド部74は、第1連通孔72に対し基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61とは反対側(すなわち基端開口部65とは反対側)に設けられている。第1側と第2側とは、基体部70の円周方向における逆方向である。よって、第1連通孔72は、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に向けて斜めに開口している。 In the first embodiment, the first convex guide portion 73 is located on the first side in the circumferential direction of the base portion 70 with respect to the first communication hole 72 and on the base cylindrical member 61 side in the axial direction of the base portion 70 (i.e., on the base side). (end opening 65 side). The first concave guide portion 74 is located on the second side of the first communication hole 72 in the circumferential direction of the base portion 70 and on the opposite side of the base cylindrical member 61 in the axial direction of the base portion 70 (i.e., the base end opening 65 located on the opposite side). The first side and the second side are opposite directions in the circumferential direction of the base portion 70. Therefore, the first communication hole 72 is formed diagonally toward the outer side of the base portion 70 in the radial direction, the second side of the base portion 70 in the circumferential direction, and the side opposite to the base cylindrical member 61 in the axial direction of the base portion 70. It is open to

図5に示すように、先端部材62は、第1噴出部71よりも先端側に第2噴出部81(噴出部)を有している。第2噴出部81は、第1噴出部71に対して、基体部70の軸方向の位置をずらし、基体部70の周方向の位置をずらしている。第2噴出部81は、第1噴出部71に対して基体部70の周方向における位置を120度ずらしている。 As shown in FIG. 5 , the distal end member 62 has a second ejection portion 81 (ejection portion) closer to the distal end than the first ejection portion 71 . The second ejection part 81 has the base part 70 shifted in the axial direction and the base part 70 in the circumferential direction with respect to the first ejection part 71 . The second ejection part 81 is shifted by 120 degrees from the first ejection part 71 in the circumferential direction of the base body part 70 .

第2噴出部81は、第1噴出部71と同様の形状である。第2噴出部81は、第1連通孔72と同様の第2連通孔82(連通孔)と、第1凸状ガイド部73と同様の第2凸状ガイド部83(凸状ガイド部)と、第1凹状ガイド部74と同様の第2凹状ガイド部84(凹状ガイド部)とを有している。 The second ejection part 81 has the same shape as the first ejection part 71. The second ejection part 81 has a second communication hole 82 (communication hole) similar to the first communication hole 72, a second convex guide part 83 (convex guide part) similar to the first convex guide part 73, and a second concave guide part 84 (concave guide part) similar to the first concave guide part 74.

第2連通孔82は、先端部材62の軸方向中間位置の内外を基体部70の径方向に連通する。 The second communication hole 82 connects the inside and outside of the axially intermediate position of the tip member 62 in the radial direction of the base portion 70.

第2凸状ガイド部83は、第2連通孔82に対し基体部70の円周方向における第1側かつ基体部70の軸方向におけるベース筒状部材61側に、第2連通孔82の一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられている。第2凸状ガイド部83は、第2連通孔82とは反対側よりも第2連通孔82側の方が基体部70の径方向における外側に位置する。 The second convex guide portion 83 is located on the first side of the second communication hole 82 in the circumferential direction of the base portion 70 and on the base cylindrical member 61 side in the axial direction of the base portion 70 . It is provided so as to protrude outward from the base body part 70 in the radial direction of the base body part 70 while forming a part. The second convex guide portion 83 is located on the outer side of the base portion 70 in the radial direction on the second communication hole 82 side than on the opposite side from the second communication hole 82 .

第2凹状ガイド部84は、第2連通孔82に対し基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に、第2連通孔82の一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられている。第2凹状ガイド部84は、第2連通孔82とは反対側よりも第2連通孔82側の方が基体部70の径方向における内側に位置する。 The second concave guide portion 84 is located on the second side of the second communication hole 82 in the circumferential direction of the base portion 70 and on the opposite side of the base cylindrical member 61 in the axial direction of the base portion 70 . The base member 70 is recessed inward in the radial direction of the base member 70 while forming a part of the base member 70 . The second concave guide portion 84 is located on the inner side of the base portion 70 in the radial direction on the second communication hole 82 side than on the opposite side from the second communication hole 82 .

第2連通孔82は、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に向けて斜めに開口している。 The second communication hole 82 opens obliquely toward the outside in the radial direction of the base portion 70, toward the second side in the circumferential direction of the base portion 70, and toward the opposite side from the base cylindrical member 61 in the axial direction of the base portion 70.

図6に示すように、先端部材62は、第2噴出部81よりも先端側に第3噴出部91(噴出部)を有している。第3噴出部91は、第2噴出部81に対して、基体部70の軸方向の位置をずらし、基体部70の周方向の位置をずらしている。第3噴出部91は、第2噴出部81に対して基体部70の周方向における位置を120度ずらしている。第1噴出部71、第2噴出部81、第3噴出部91は、この順に、基体部70の周方向に等間隔かつ基体部70の軸方向に等間隔で配置されている。 As shown in FIG. 6 , the distal end member 62 has a third ejection portion 91 (ejection portion) closer to the distal end than the second ejection portion 81 . The third ejection part 91 has the base part 70 shifted in the axial direction and the base part 70 in the circumferential direction with respect to the second ejection part 81 . The third ejection part 91 is shifted by 120 degrees from the second ejection part 81 in the circumferential direction of the base body part 70 . The first ejection part 71, the second ejection part 81, and the third ejection part 91 are arranged in this order at equal intervals in the circumferential direction of the base part 70 and at equal intervals in the axial direction of the base part 70.

第3噴出部91は、第1噴出部71および第2噴出部81と同様の形状である。第3噴出部91は、第1連通孔72と同様の第3連通孔92(連通孔)と、第1凸状ガイド部73と同様の第3凸状ガイド部93(凸状ガイド部)と、第1凹状ガイド部74と同様の第3凹状ガイド部94(凹状ガイド部)とを有している。 The third ejection part 91 has the same shape as the first ejection part 71 and the second ejection part 81. The third ejection part 91 has a third communication hole 92 (communication hole) similar to the first communication hole 72 and a third convex guide part 93 (convex guide part) similar to the first convex guide part 73. , has a third concave guide section 94 (concave guide section) similar to the first concave guide section 74.

第3連通孔92は、先端部材62の軸方向中間位置の内外を基体部70の径方向に連通する。 The third communication hole 92 communicates the inside and outside of the axially intermediate position of the tip member 62 in the radial direction of the base portion 70 .

第3凸状ガイド部93は、第3連通孔92に対し基体部70の円周方向における第1側かつ基体部70の軸方向におけるベース筒状部材61側に、第3連通孔92の一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられている。第3凸状ガイド部93は、第3連通孔92とは反対側よりも第3連通孔92側の方が基体部70の径方向における外側に位置する。 The third convex guide portion 93 is provided on the first side in the circumferential direction of the base portion 70 with respect to the third communication hole 92 and on the base cylindrical member 61 side in the axial direction of the base portion 70, protruding outward from the base portion 70 in the radial direction of the base portion 70 while forming a part of the third communication hole 92. The third convex guide portion 93 is located radially outward on the third communication hole 92 side of the base portion 70 than on the side opposite the third communication hole 92.

第3凹状ガイド部94は、第3連通孔92に対し基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に、第3連通孔92の一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられている。第3凹状ガイド部94は、第3連通孔92とは反対側よりも第3連通孔92側の方が基体部70の径方向における内側に位置する。 The third concave guide portion 94 is recessed radially inward from the base portion 70 while forming a part of the third communication hole 92, on the second side in the circumferential direction of the base portion 70 relative to the third communication hole 92 and on the opposite side of the base portion 70 from the base cylindrical member 61 in the axial direction of the base portion 70. The third concave guide portion 94 is located radially inward on the third communication hole 92 side of the base portion 70 than on the opposite side of the third communication hole 92.

第3連通孔92は、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に向けて斜めに開口している。 The third communication hole 92 opens diagonally toward the outer side of the base portion 70 in the radial direction, the second side of the base portion 70 in the circumferential direction, and the side opposite to the base cylindrical member 61 in the axial direction of the base portion 70. are doing.

第1連通孔72、第2連通孔82および第3連通孔92は、いずれも、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に向けて斜めに開口している。 The first communication hole 72, the second communication hole 82, and the third communication hole 92 are all located on the outside in the radial direction of the base portion 70, on the second side in the circumferential direction of the base portion 70, and on the axial direction of the base portion 70. It opens obliquely toward the side opposite to the base cylindrical member 61.

以上により、ノズル本体16は、基端開口部65を有する円筒状をなすと共に先端側に第1噴出部71、第2噴出部81および第3噴出部91が設けられている。 As described above, the nozzle main body 16 has a cylindrical shape with a base end opening 65, and is provided with a first ejection part 71, a second ejection part 81, and a third ejection part 91 on the distal end side.

ノズル本体16は、図7および図8に示すように、先端部材62の先端に設けられた嵌合部材100を有している。嵌合部材100は、円板状の金属部材であり、先端部材62の軸方向における第3噴出部91よりも先端側に嵌合している。嵌合部材100は、先端部材62の先端部の内周部に嵌合されて固定されている。嵌合部材100には、嵌合部材100を、嵌合部材100の軸方向に貫通する先端噴出穴101が形成されている。 The nozzle body 16 has a fitting member 100 provided at the tip of the tip member 62, as shown in FIGS. 7 and 8. The fitting member 100 is a disk-shaped metal member, and is fitted to the tip end side of the tip member 62 relative to the third spout portion 91 in the axial direction. The fitting member 100 is fitted and fixed to the inner circumference of the tip of the tip member 62. The fitting member 100 is formed with a tip ejection hole 101 that penetrates the fitting member 100 in the axial direction of the fitting member 100 .

先端噴出穴101は、嵌合部材100の中心軸線に対して径方向にオフセットしており、嵌合部材100の中心軸線に対して斜めに延びている。先端噴出穴101は、先端側が基端側よりも、嵌合部材100の中心軸線からの距離が短くなっている。よって、先端噴出穴101は、基体部70の中心軸線に対して径方向にオフセットしており、基体部70の中心軸線に対して斜めに延びている。言い換えれば、ノズル本体16には、基端開口部65とは反対側の先端部に、基体部70の中心軸線に対して斜めに先端噴出穴101が設けられている。先端噴出穴101は、ノズル本体16の先端位置の内外をノズル本体16の軸方向に連通する。 The tip ejection hole 101 is radially offset from the central axis of the fitting member 100 and extends obliquely from the central axis of the fitting member 100. The tip side of the tip ejection hole 101 is closer to the central axis of the fitting member 100 than the base side. Therefore, the tip ejection hole 101 is radially offset from the central axis of the base part 70 and extends obliquely from the central axis of the base part 70. In other words, the nozzle body 16 has a tip ejection hole 101 at a diagonal to the central axis of the base part 70 at the tip part opposite the base end opening 65. The tip ejection hole 101 communicates the inside and outside of the tip position of the nozzle body 16 in the axial direction of the nozzle body 16.

図2に示すように、軸受13,14は、いずれもシールド形のボールベアリングであって同一部品である。軸受13は、そのインナレースがベース筒状部材61の軸方向の中間所定位置に圧入されて固定されている。また、この状態でベース筒状部材61に基端側から介在部材15が被せられ、その後、軸受14が、インナレースにおいてベース筒状部材61の基端側に介在部材15に当接するまで圧入されて固定されている。これにより、ノズル本体16と軸受13,14と介在部材15とが組み立てられて一体化された組立体105となる。軸受13,14は、ベース筒状部材61に、ベース筒状部材61の中心軸線の方向に離間して設けられている。ノズル本体16には、軸受13,14よりも先端側に、第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101が形成された先端部材62が設けられている。 As shown in FIG. 2, the bearings 13 and 14 are both shielded ball bearings and are the same component. The inner race of the bearing 13 is press-fitted and fixed at a predetermined axially intermediate position of the base cylindrical member 61. In addition, in this state, the intervening member 15 is placed over the base cylindrical member 61 from the proximal end side, and then the bearing 14 is press-fitted into the inner race on the proximal end side of the base cylindrical member 61 until it abuts on the intervening member 15. Fixed. As a result, the nozzle body 16, the bearings 13, 14, and the intervening member 15 are assembled to form an integrated assembly 105. The bearings 13 and 14 are provided on the base cylindrical member 61 so as to be spaced apart from each other in the direction of the central axis of the base cylindrical member 61. The nozzle body 16 is provided with a tip member 62 on the tip side of the bearings 13 and 14, in which a first jetting part 71, a second jetting part 81, a third jetting part 91, and a tip jetting hole 101 are formed. .

そして、ノズル本体16と軸受13,14と介在部材15とからなる組立体105が、基端開口部65を先頭にして、筒状部材12の筒状部材本体41に先端側から挿入される。ここで、軸受13,14のそれぞれのアウタレースの外径に対し、筒状部材本体41の大径内径部52は挿入代分だけ大径であり、小径内径部51は小径となっている。よって、組立体105は、軸受13,14が筒状部材本体41の大径内径部52内に挿入され、基端側の軸受14のアウタレースが軸受13とは反対側の端面において突当部53に当接して停止する。突当部53と先端側ネジ穴48との最小距離は、軸受13,14間の最大距離と同等になっている。よって、組立体105が軸受14を突当部53に当接させた状態で、先端側ネジ穴48に筒状部材本体41の径方向外側からストッパネジ42を螺合させ、ストッパネジ42を大径内径部52よりも径方向内側に突出させることで、ストッパネジ42が先端側の軸受13のアウタレースの軸受14とは反対側の端面に当接して、組立体105を筒状部材12から抜け止めする。 Then, the assembly 105 consisting of the nozzle body 16, the bearings 13, 14, and the intervening member 15 is inserted from the tip side into the tubular member body 41 of the tubular member 12 with the base end opening 65 at the head. Here, the large diameter inner diameter portion 52 of the tubular member body 41 is larger than the outer diameter of the outer races of the bearings 13, 14 by the insertion allowance, and the small diameter inner diameter portion 51 is smaller. Therefore, in the assembly 105, the bearings 13, 14 are inserted into the large diameter inner diameter portion 52 of the tubular member body 41, and the outer race of the base end side bearing 14 abuts against the abutment portion 53 at the end face opposite the bearing 13 and stops. The minimum distance between the abutment portion 53 and the tip side screw hole 48 is equal to the maximum distance between the bearings 13, 14. Therefore, with the bearing 14 of the assembly 105 abutting against the abutment portion 53, the stopper screw 42 is screwed into the tip side screw hole 48 from the radial outside of the tubular member body 41, and the stopper screw 42 protrudes radially inward beyond the large inner diameter portion 52, so that the stopper screw 42 abuts against the end face of the outer race of the tip side bearing 13 on the opposite side to the bearing 14, preventing the assembly 105 from coming off the tubular member 12.

このように筒状部材12に組み付けられた状態で、組立体105は、ノズル本体16の基端側が筒状部材12内に配置された状態となり、ノズル本体16の基端側が軸受13,14によって筒状部材12に回転可能に支持される。言い換えれば、二つの軸受13,14が、ノズル本体16に、ノズル本体16の中心軸線の延びる方向に離間して設けられてノズル本体16を筒状部材12の内周部に回転可能に支持する。ノズル本体16は、筒状部材12に組み付けられた状態の内部ノズル部11に対しても回転自在となる。 In the state assembled to the cylindrical member 12 in this manner, the assembly 105 is in a state in which the base end side of the nozzle body 16 is disposed within the cylindrical member 12, and the base end side of the nozzle body 16 is supported by the bearings 13 and 14. It is rotatably supported by the cylindrical member 12. In other words, the two bearings 13 and 14 are provided on the nozzle body 16 at a distance from each other in the direction in which the central axis of the nozzle body 16 extends, and rotatably support the nozzle body 16 on the inner circumference of the cylindrical member 12. . The nozzle main body 16 is also rotatable relative to the internal nozzle section 11 assembled to the cylindrical member 12.

また、筒状部材12に組み付けられた状態で、組立体105は、ノズル本体16の第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101が形成された先端部材62が、筒状部材12よりも外の先端側に設けられている。言い換えれば、筒状部材12に組み付けられた状態のノズル本体16は、筒状部材12の先端部よりも突出しており、第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101が、筒状部材12の先端部から外側に露出している。 Moreover, in the state assembled to the cylindrical member 12, the assembly 105 is a distal end member in which the first ejection part 71, the second ejection part 81, the third ejection part 91, and the distal end ejection hole 101 of the nozzle body 16 are formed. 62 is provided on the outer tip side of the cylindrical member 12. In other words, the nozzle body 16 assembled to the cylindrical member 12 protrudes beyond the tip of the cylindrical member 12, and includes the first ejection part 71, the second ejection part 81, the third ejection part 91, and the tip. A spout hole 101 is exposed to the outside from the tip of the cylindrical member 12.

筒状部材12に組み付けられた状態のノズル本体16および内部ノズル部11は、ノズル本体16の基端開口部65と内部ノズル部11の内部噴出口37とが、中心軸線を一致させ、相互間に隙間をもって配置される。具体的に、この状態のノズル本体16および内部ノズル部11は、ノズル本体16の基端開口部65と内部ノズル部11の内部噴出口37とが、筒状部材12内で相互間に径方向および軸方向に隙間をもって対向配置される。なお、内部ノズル部11の内部噴出口37は、ノズル本体16の基端開口部65との間に径方向の隙間を設けつつ、軸方向において基端開口部65内に入り込んでいても良い。言い換えれば、内部ノズル部11の内部噴出口37は、その軸方向における位置が、ノズル本体16と重なり合っていても良い。内部ノズル部11は、このように筒状部材12内で基端開口部65との間に隙間をもって配置されて基端開口部65内に向けて加圧気体を噴出させる。 The nozzle body 16 and the internal nozzle part 11 in a state assembled to the cylindrical member 12 are such that the base end opening 65 of the nozzle body 16 and the internal jet port 37 of the internal nozzle part 11 align their central axes, and are spaced from each other. placed with a gap between. Specifically, in the nozzle body 16 and the internal nozzle part 11 in this state, the base end opening 65 of the nozzle body 16 and the internal jet port 37 of the internal nozzle part 11 are radially spaced between each other within the cylindrical member 12. and are arranged facing each other with a gap in the axial direction. Note that the internal spout 37 of the internal nozzle portion 11 may enter into the proximal opening 65 in the axial direction while providing a radial gap with the proximal opening 65 of the nozzle body 16. In other words, the internal ejection port 37 of the internal nozzle portion 11 may overlap the nozzle body 16 in its axial position. The internal nozzle portion 11 is thus disposed within the cylindrical member 12 with a gap between it and the proximal opening 65 to eject pressurized gas into the proximal opening 65.

筒状部材12と、いずれも筒状部材12に組み付けられた状態の内部ノズル部11、ノズル本体16および軸受14との間には、室111が形成されることになる。ノズル本体16の基端開口部65と内部ノズル部11の内部噴出口37との隙間は、この室111に常時連通する。 A chamber 111 is formed between the cylindrical member 12 and the internal nozzle section 11, nozzle body 16, and bearing 14, all of which are assembled to the cylindrical member 12. The gap between the base end opening 65 of the nozzle body 16 and the internal nozzle outlet 37 of the internal nozzle section 11 is constantly in communication with this chamber 111.

筒状部材12と、筒状部材12に組み付けられた状態の軸受13,14および介在部材15との間には、室112が形成されることになる。室112と室111との間には、これらを仕切るように軸受14が配置されている。軸受13は、筒状部材12の開口する先端側と室112との間に、これらを仕切るように配置されている。 A chamber 112 is formed between the cylindrical member 12 and the bearings 13, 14 and intervening member 15 when assembled to the cylindrical member 12. The bearing 14 is disposed between the chamber 112 and the chamber 111 so as to separate them. The bearing 13 is disposed between the open tip side of the cylindrical member 12 and the chamber 112 so as to separate them.

筒状部材12の第1中間ネジ穴55は、内部ノズル部11の連結部材21と軸受14と間に配置されており、よって、室111に常時連通している。その結果、第1中間ネジ穴55は、ノズル本体16の基端開口部65と内部ノズル部11の内部噴出口37との隙間に常時連通する。 The first intermediate screw hole 55 of the cylindrical member 12 is disposed between the connecting member 21 of the internal nozzle section 11 and the bearing 14, and is therefore always in communication with the chamber 111. As a result, the first intermediate screw hole 55 is always in communication with the gap between the base end opening 65 of the nozzle body 16 and the internal nozzle outlet 37 of the internal nozzle section 11.

第1中間ネジ穴55には、外部に連通可能な開閉弁115(第1外部連通部)が螺合されて取り付けられている。開閉弁115は、内部流路116の一端が室111内に連通し、内部流路116の他端が外部に連通する。開閉弁115は、ここでは、内部流路116の室111とは反対側が外気に開口している。言い換えれば、筒状部材12には、二つの軸受13,14のうち基端開口部65に近い側の軸受14よりも内部ノズル部11側に、外部に連通可能な開閉弁115が設けられている。開閉弁115は、外気を室111内に取り込み可能となっている。 An on-off valve 115 (first external communication part) that can communicate with the outside is screwed and attached to the first intermediate screw hole 55. One end of the on-off valve 115 communicates with the inside of the chamber 111, and the other end of the internal flow path 116 communicates with the outside. Here, the on-off valve 115 is open to the outside air on the side of the internal flow path 116 opposite the chamber 111. In other words, the cylindrical member 12 is provided with the on-off valve 115 that can communicate with the outside, closer to the internal nozzle part 11 than the bearing 14 that is closer to the base end opening 65 out of the two bearings 13, 14. The on-off valve 115 is capable of taking in outside air into the chamber 111.

開閉弁115は、内部流路116の中間位置を開閉する回動可能なレバー117を有している。開閉弁115は、レバー117が、図2に示すように内部流路116と平行になると内部流路116が全開となり、レバー117が、内部流路116に対し垂直をなすと内部流路116が全閉となる。開閉弁115は、レバー117の回動角度で全開から全閉まで無段階で内部流路116の流路面積を変化させる。 The on-off valve 115 has a rotatable lever 117 that opens and closes the middle position of the internal flow path 116. When the lever 117 of the on-off valve 115 is parallel to the internal flow path 116 as shown in FIG. 2, the internal flow path 116 is fully opened, and when the lever 117 is perpendicular to the internal flow path 116, the internal flow path 116 is fully closed. The on-off valve 115 changes the flow path area of the internal flow path 116 steplessly from fully open to fully closed depending on the rotation angle of the lever 117.

筒状部材12の第2中間ネジ穴56は、内部ノズル部11の連結部材21と軸受14と間に配置されており、よって、室111に常時連通している。その結果、第2中間ネジ穴56は、ノズル本体16の基端開口部65と内部ノズル部11の内部噴出口37との隙間に常時連通する。 The second intermediate threaded hole 56 of the cylindrical member 12 is disposed between the connecting member 21 of the internal nozzle portion 11 and the bearing 14, and is therefore always in communication with the chamber 111. As a result, the second intermediate threaded hole 56 is always in communication with the gap between the base end opening 65 of the nozzle body 16 and the internal spout 37 of the internal nozzle section 11 .

第2中間ネジ穴56には、外部に連通可能な流量調整弁121(第2外部連通部)が螺合されて取り付けられている。流量調整弁121は、内部流路122の一端が室111内に連通し、内部流路122の他端が外部に連通する。言い換えれば、筒状部材12には、二つの軸受13,14のうち基端開口部65に近い側の軸受14よりも内部ノズル部11側に、外部に連通可能な流量調整弁121が、開閉弁115とは別に設けられている。流量調整弁121は、ここでは、内部流路122の室111とは反対側が液体供給源Bに連通している。これにより、流量調整弁121は液体供給源Bから液体を室111内に取り込み可能となっている。 A flow rate adjustment valve 121 (second external communication section) that can communicate with the outside is screwed into the second intermediate screw hole 56 . In the flow rate adjustment valve 121, one end of an internal flow path 122 communicates with the inside of the chamber 111, and the other end of the internal flow path 122 communicates with the outside. In other words, the cylindrical member 12 has a flow rate regulating valve 121 that can be opened and closed, and is located closer to the internal nozzle portion 11 than the bearing 14 that is closer to the proximal opening 65 of the two bearings 13 and 14. It is provided separately from the valve 115. Here, the flow rate adjustment valve 121 communicates with the liquid supply source B at the side of the internal flow path 122 opposite to the chamber 111. Thereby, the flow rate adjustment valve 121 can take in liquid from the liquid supply source B into the chamber 111.

流量調整弁121は、内部流路122の中間位置を開閉する回転可能な調整部材123と、調整部材123を固定する固定部材124とを有している。流量調整弁121は、固定部材124が緩められた状態で調整部材123が締め込まれると内部流路122が全閉となり、固定部材124が緩められた状態で調整部材123が緩められると内部流路122が全開となる。流量調整弁121は、調整部材123の回転角度で全閉から全開まで無段階で内部流路122の流路面積を変化させる。固定部材124は、締め付けられると調整部材123の回転角度を一定に固定する。固定部材124が緩められると調整部材123の回転角度が変更可能となる。 The flow rate adjustment valve 121 includes a rotatable adjustment member 123 that opens and closes an intermediate position of the internal flow path 122, and a fixing member 124 that fixes the adjustment member 123. In the flow rate adjustment valve 121, when the adjustment member 123 is tightened with the fixed member 124 loosened, the internal flow passage 122 is fully closed, and when the adjustment member 123 is loosened with the fixed member 124 loosened, the internal flow is closed. Road 122 is fully opened. The flow rate adjustment valve 121 changes the flow path area of the internal flow path 122 steplessly from fully closed to fully open depending on the rotation angle of the adjusting member 123. When the fixing member 124 is tightened, the rotation angle of the adjusting member 123 is fixed to a constant value. When the fixing member 124 is loosened, the rotation angle of the adjusting member 123 can be changed.

以上の構成の噴射ノズル1にガン本体2を介して加圧気体供給源Aから加圧エアが供給されると、ノズル本体16のベース筒状部材61の基端開口部65内に向けて、この基端開口部65との間に隙間をもって配置された内部ノズル部11から加圧エアが噴出する。すると、ノズル本体16内を加圧エアが通過することになり、通過した加圧エアが、ノズル本体16の軸方向中間位置の内外を基体部70の径方向に連通する第1連通孔72、第2連通孔82および第3連通孔92と、ノズル本体16の先端部の内外を基体部70の軸方向に連通する先端噴出穴101とから外部に噴出する。 When pressurized air is supplied from the pressurized gas supply source A through the gun body 2 to the injection nozzle 1 configured as described above, the pressurized air is ejected from the internal nozzle portion 11 arranged with a gap between it and the base end opening 65 of the base cylindrical member 61 of the nozzle body 16. Then, the pressurized air passes through the nozzle body 16, and the passing pressurized air is ejected to the outside from the first communication hole 72, the second communication hole 82, and the third communication hole 92 that connect the inside and outside of the axial middle position of the nozzle body 16 in the radial direction of the base portion 70, and from the tip ejection hole 101 that connects the inside and outside of the tip of the nozzle body 16 in the axial direction of the base portion 70.

加圧エアは、一部が第1連通孔72から外部に噴出する際に、第1連通孔72に対し基体部70の円周方向における第1側かつ基体部70の軸方向における基端開口部65側に、第1連通孔72の一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられた第1凸状ガイド部73と、第1連通孔72に対し基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65とは反対側に、第1連通孔72の一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられた第1凹状ガイド部74とによって案内されて、第1連通孔72から基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65とは反対側すなわち先端側に向けて噴出する。 When a part of the pressurized air is ejected to the outside from the first communication hole 72, the pressurized air is directed to the first side of the first communication hole 72 in the circumferential direction of the base body part 70 and the base end opening in the axial direction of the base body part 70. A first convex guide portion 73 is provided on the portion 65 side, forming a part of the first communication hole 72 and protruding outward from the base portion 70 in the radial direction of the base portion 70; On the other hand, a portion of the first communication hole 72 is formed on the second side of the base body 70 in the circumferential direction and on the opposite side of the base end opening 65 in the axial direction of the base body 70 . 70 is guided by a first concave guide portion 74 that is recessed inward in the radial direction of the base portion 70 , from the first communication hole 72 to the second side in the circumferential direction of the base portion 70 and in the axial direction of the base portion 70 . It is ejected toward the side opposite to the base end opening 65, that is, toward the distal end side.

また、加圧エアは、一部が第2連通孔82から外部に噴出する際に、第2連通孔82に対し基体部70の円周方向における第1側かつ基体部70の軸方向における基端開口部65側に、第2連通孔82の一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられた第2凸状ガイド部83と、第2連通孔82に対し基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65とは反対側に、第2連通孔82の一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられた第2凹状ガイド部84とによって案内されて、第2連通孔82から基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65とは反対側すなわち先端側に向けて噴出する。 When a portion of the pressurized air is ejected from the second communication hole 82 to the outside, the air is guided by a second convex guide portion 83 that protrudes outward from the base portion 70 in the radial direction of the base portion 70 while forming a part of the second communication hole 82 on the first side in the circumferential direction of the base portion 70 and on the side of the base end opening 65 in the axial direction of the base portion 70 relative to the second communication hole 82, and a second concave guide portion 84 that is recessed inward in the radial direction of the base portion 70 while forming a part of the second communication hole 82 on the second side in the circumferential direction of the base portion 70 and on the side opposite the base end opening 65 in the axial direction of the base portion 70 relative to the second communication hole 82, and is ejected from the second communication hole 82 toward the second side in the circumferential direction of the base portion 70 and the side opposite the base end opening 65 in the axial direction of the base portion 70, i.e., the tip side.

また、加圧エアは、一部が第3連通孔92から外部に噴出する際に、第3連通孔92に対し基体部70の円周方向における第1側かつ基体部70の軸方向における基端開口部65側に、第3連通孔92の一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられた第3凸状ガイド部93と、第3連通孔92に対し基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65とは反対側に、第3連通孔92の一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられた第3凹状ガイド部94とによって案内されて、第3連通孔92から基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65とは反対側すなわち先端側に向けて噴出する。 When a portion of the pressurized air is ejected from the third communication hole 92 to the outside, the third communication hole 92 is guided by a third convex guide portion 93 that protrudes outward from the base portion 70 in the radial direction of the base portion 70 and forms a part of the third communication hole 92 on the first side in the circumferential direction of the base portion 70 and on the side of the base end opening 65 in the axial direction of the base portion 70, and a third concave guide portion 94 that forms a part of the third communication hole 92 and is recessed inward in the radial direction of the base portion 70 and forms a part of the third communication hole 92 on the second side in the circumferential direction of the base portion 70 and on the side opposite the base end opening 65 in the axial direction of the base portion 70, and the third communication hole 92 is ejected from the third communication hole 92 toward the second side in the circumferential direction of the base portion 70 and the side opposite the base end opening 65 in the axial direction of the base portion 70, i.e., the tip side.

以上により、二つの軸受13,14で筒状部材12に支持されたノズル本体16が円周方向における第1側(先端部材62をその軸方向に沿ってベース筒状部材61とは反対側から見たときの時計回りの方向)に向けて回転する。これにより、噴射ノズル1は、ノズル本体16が、内部を通過する流体の流れのみで首を振らずに旋回する。 As described above, the nozzle body 16 supported by the cylindrical member 12 by the two bearings 13 and 14 is moved from the first side in the circumferential direction (the tip member 62 is moved from the side opposite to the base cylindrical member 61 along the axial direction). (clockwise direction when viewed). Thereby, in the injection nozzle 1, the nozzle body 16 rotates without shaking its head only by the flow of fluid passing through the inside.

また、加圧エアは、一部が先端噴出穴101から外部に噴出する際に、先端噴出穴101に沿って、基体部70の中心軸線に対して傾斜して基体部70の軸方向における基端開口部65とは反対側すなわち先端側に向けて噴出する。 When some of the pressurized air is ejected from the tip ejection hole 101 to the outside, it is ejected along the tip ejection hole 101 at an angle to the central axis of the base portion 70 toward the opposite side of the base opening 65 in the axial direction of the base portion 70, i.e., toward the tip side.

また、ノズル本体16の基端開口部65内に向けて、この基端開口部65との間に隙間をもって配置された内部ノズル部11から加圧エアを噴出させると、基端開口部65と内部ノズル部11との間の室111に負圧が生じることになる。筒状部材12には、二つの軸受13,14のうち基端開口部65に近い側の軸受14よりも内部ノズル部11側に、外部に連通可能な開閉弁115が設けられている。このため、開閉弁115に連通する外部から上記負圧で流体、具体的には外気の室111への吸引を行う。 When pressurized air is sprayed from the internal nozzle part 11, which is disposed with a gap between it and the base end opening 65, toward the inside of the base end opening 65 of the nozzle body 16, negative pressure is generated in the chamber 111 between the base end opening 65 and the internal nozzle part 11. The cylindrical member 12 is provided with an on-off valve 115 that can communicate with the outside, closer to the internal nozzle part 11 than the bearing 14, which is closer to the base end opening 65, of the two bearings 13, 14. Therefore, the negative pressure is used to suck fluid, specifically outside air, into the chamber 111 from the outside that communicates with the on-off valve 115.

また、筒状部材12には、二つの軸受13,14のうち基端開口部65に近い側の軸受14よりも内部ノズル部11側に、外部に連通可能な流量調整弁121が設けられている。このため、室111に負圧が生じると、流量調整弁121に連通する外部から上記負圧で流体、具体的には液体供給源Bの液体の室111への吸引を行う。 Further, the cylindrical member 12 is provided with a flow rate regulating valve 121 that can communicate with the outside, closer to the internal nozzle portion 11 than the bearing 14 that is closer to the proximal opening 65 of the two bearings 13 and 14. There is. Therefore, when a negative pressure is generated in the chamber 111, fluid, specifically, liquid from the liquid supply source B, is sucked into the chamber 111 from the outside communicating with the flow rate regulating valve 121 using the negative pressure.

そして、開閉弁115を介して導入される外気と、流量調整弁121を介して導入される液体と、加圧エアとが混合されながら、回転するノズル本体16の第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101から噴出する。これにより、回転するノズル本体16の第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101から流体を噴出させることができる。ノズル本体16が回転することから、第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101からそれぞれ噴出された流体はトルネード状をなす。 Then, the outside air introduced through the on-off valve 115, the liquid introduced through the flow rate control valve 121, and the pressurized air are mixed and ejected from the first ejection portion 71, the second ejection portion 81, the third ejection portion 91, and the tip ejection hole 101 of the rotating nozzle body 16. This allows the fluid to be ejected from the first ejection portion 71, the second ejection portion 81, the third ejection portion 91, and the tip ejection hole 101 of the rotating nozzle body 16. As the nozzle body 16 rotates, the fluids ejected from the first ejection portion 71, the second ejection portion 81, the third ejection portion 91, and the tip ejection hole 101 form a tornado shape.

ここで、流量調整弁121の開弁量を0よりも大きい一定値として、開閉弁115を全閉とすると、液体供給源Bから室111への液体の吸い込み量がこの流量調整弁121の開弁量での最大値となる。他方、この状態で、開閉弁115を全開とすると、液体供給源Bから室111への液体の吸い込みが0になる。そして、全閉から全開の間で開閉弁115の開弁量を調整することで、ノズル本体16の回転数と、液体供給源Bから室111への液体の吸い込み量と、第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101からの流体の噴出量とを調整できる。 Here, when the opening amount of the flow rate control valve 121 is set to a constant value greater than 0 and the on-off valve 115 is fully closed, the amount of liquid sucked from the liquid supply source B into the chamber 111 becomes the maximum value for this opening amount of the flow rate control valve 121. On the other hand, when the on-off valve 115 is fully opened in this state, the amount of liquid sucked from the liquid supply source B into the chamber 111 becomes zero. Then, by adjusting the opening amount of the on-off valve 115 between fully closed and fully open, it is possible to adjust the rotation speed of the nozzle body 16, the amount of liquid sucked from the liquid supply source B into the chamber 111, and the amount of fluid ejected from the first ejection portion 71, the second ejection portion 81, the third ejection portion 91, and the tip ejection hole 101.

また、流量調整弁121の開弁量を0すなわち全閉とすれば、開閉弁115の状態には無関係に液体供給源Bから室111への液体の吸い込み量が0となる。この状態で、開閉弁115の開弁量を調整することで、ノズル本体16の回転数と、第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101からの加圧エアの噴出量とを調整できる。 In addition, if the opening amount of the flow rate adjustment valve 121 is set to 0, i.e., fully closed, the amount of liquid sucked from the liquid supply source B to the chamber 111 will be 0 regardless of the state of the on-off valve 115. In this state, by adjusting the opening amount of the on-off valve 115, the rotation speed of the nozzle body 16 and the amount of pressurized air ejected from the first ejection part 71, the second ejection part 81, the third ejection part 91, and the tip ejection hole 101 can be adjusted.

ここで、噴射ノズル1は、上記のように液体供給源Bから液体を吸い込まなければ、加圧エアを第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101から噴出させることができる。また、噴射ノズル1は、液体供給源Bから液体として水を吸い込めば、水を霧状にして第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101から噴出させることができる。また、噴射ノズル1は、液体供給源Bから液体として洗浄液を吸い込めば、洗浄液を霧状にし、あるいは発泡させて第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101から噴出させることができる。また、噴射ノズル1は、液体供給源Bから液体としてクーラント液を吸い込めば、クーラント液を霧状にして第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101から噴出させることができる。 Here, if the injection nozzle 1 does not suck liquid from the liquid supply source B as described above, the pressurized air is emitted from the first injection part 71, the second injection part 81, the third injection part 91, and the tip injection hole 101. It can be made to squirt. Furthermore, when the injection nozzle 1 sucks water as a liquid from the liquid supply source B, the water is turned into a mist and is ejected from the first ejection part 71, the second ejection part 81, the third ejection part 91, and the tip ejection hole 101. can be done. In addition, when the injection nozzle 1 sucks the cleaning liquid as a liquid from the liquid supply source B, the cleaning liquid is atomized or foamed and is ejected from the first jetting part 71, the second jetting part 81, the third jetting part 91 and the tip jetting part. It can be ejected from the hole 101. In addition, when the injection nozzle 1 sucks the coolant liquid as a liquid from the liquid supply source B, the injection nozzle 1 atomizes the coolant liquid into the first injection part 71 , the second injection part 81 , the third injection part 91 , and the tip injection hole 101 . It can be ejected from.

ここで、噴射ノズル1は、首を振らずに回転する直線形状のノズル本体16が筒状部材12から延出している。このため、噴射ノズル1は、例えば、ワークに形成された有底穴の、切削加工による切り粉や鋳造時の砂型の残砂等を除去する際に、ノズル本体16の先端部を有底穴内に円滑に挿し込むことができる。これにより、第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101からそれぞれ先方に噴出された流体によって高い洗浄効率で有底穴を洗浄することができる。 Here, the injection nozzle 1 has a linear nozzle body 16 that rotates without swinging, extending from the cylindrical member 12. For this reason, the injection nozzle 1 can smoothly insert the tip of the nozzle body 16 into a bottomed hole formed in a workpiece when, for example, removing cutting chips from cutting work or residual sand from a sand mold during casting. This allows the bottomed hole to be cleaned with high cleaning efficiency by the fluids sprayed forward from the first spray part 71, the second spray part 81, the third spray part 91, and the tip spray hole 101.

また、噴射ノズル1は、液体供給源Bから液体として可燃液を吸い込めば、可燃液を霧状にして第1噴出部71、第2噴出部81、第3噴出部91および先端噴出穴101から噴出させることができる。よって、可燃液に着火すれば、噴射ノズル1がバーナーとなる。 In addition, when the injection nozzle 1 sucks the flammable liquid as a liquid from the liquid supply source B, the injection nozzle 1 atomizes the flammable liquid into the first injection part 71 , the second injection part 81 , the third injection part 91 , and the tip injection hole 101 . It can be ejected from. Therefore, if the combustible liquid is ignited, the injection nozzle 1 becomes a burner.

なお、室111が負圧となることにより、室112も負圧になるため、軸受13から筒状部材12の先端側に潤滑油が漏れ出し難くなる。ここで、室111は開閉弁115を介して外気に連通していることから、その負圧の絶対値は比較的小さい。このため、室112の負圧も、その絶対値は比較的小さい。よって、軸受13の室112とは反対側と室112側との差圧が抑えられ、その結果、軸受13から室112側への潤滑油の流出も抑えられる。また、軸受13に潤滑油の供給が必要な場合、軸受13の室112とは反対側から潤滑油を供給すれば、室112が負圧になることで軸受13に潤滑油が良好に浸透する。 Note that since the pressure in the chamber 111 becomes negative, the pressure in the chamber 112 also becomes negative, making it difficult for lubricating oil to leak from the bearing 13 to the tip side of the cylindrical member 12. Here, since the chamber 111 communicates with the outside air via the on-off valve 115, the absolute value of the negative pressure is relatively small. Therefore, the absolute value of the negative pressure in the chamber 112 is also relatively small. Therefore, the differential pressure between the side of the bearing 13 opposite to the chamber 112 and the side of the chamber 112 is suppressed, and as a result, the outflow of lubricating oil from the bearing 13 to the side of the chamber 112 is also suppressed. In addition, when lubricating oil needs to be supplied to the bearing 13, if the lubricating oil is supplied from the side opposite to the chamber 112 of the bearing 13, the lubricating oil can penetrate well into the bearing 13 because the chamber 112 becomes negative pressure. .

すなわち、噴射ノズル1は、例えば、ノズル部材22を設けず、また、筒状部材本体41に第1中間ネジ穴55および第2中間ネジ穴56を設けずに、加圧気体供給源Aから加圧エアを連結部材21を介して室111に導入する構造として、加圧気体供給源Aからの加圧エアのみをノズル本体16から噴出させる構造にすると、室111が高い正圧となり、その結果、室112も高い正圧となる。よって、軸受13の先端側と室112側との差圧が大きくなり、その結果、軸受13から先端側に潤滑油が漏れ出してしまう。第1実施形態の噴射ノズル1は、このような軸受13からの潤滑油の先端側への漏れ出しを抑制することができる。 That is, the injection nozzle 1 is configured such that, for example, the nozzle member 22 is not provided, and the cylindrical member main body 41 is not provided with the first intermediate screw hole 55 and the second intermediate screw hole 56, and the injection nozzle 1 is pressurized from the pressurized gas supply source A. If the structure in which pressurized air is introduced into the chamber 111 via the connecting member 21 is such that only the pressurized air from the pressurized gas supply source A is ejected from the nozzle body 16, the chamber 111 will have a high positive pressure. , the chamber 112 also has a high positive pressure. Therefore, the differential pressure between the front end side of the bearing 13 and the chamber 112 side increases, and as a result, lubricating oil leaks from the bearing 13 toward the front end side. The injection nozzle 1 of the first embodiment can suppress such leakage of lubricating oil from the bearing 13 toward the tip side.

また、加圧気体供給源Aからの加圧エアのみをノズル本体16から噴出させる場合、先端側から潤滑油を軸受13に供給しても、軸受13の先端とは反対側の室112が高い正圧となるため、軸受13に潤滑油は浸透し難い。第1実施形態の噴射ノズル1は、このような軸受13への潤滑油の先端側からの給油が良好にできることになる。 In addition, when only pressurized air from the pressurized gas supply source A is ejected from the nozzle body 16, even if lubricating oil is supplied to the bearing 13 from the tip side, the chamber 112 on the opposite side of the tip of the bearing 13 is high. Since the pressure is positive, lubricating oil is difficult to penetrate into the bearing 13. The injection nozzle 1 of the first embodiment can effectively supply lubricating oil to the bearing 13 from the tip side.

[第2実施形態]
本発明に係る第2実施形態の噴射ノズルを主に図9~図13を参照して第1実施形態との相違部分を中心に以下に説明する。
[Second embodiment]
An injection nozzle according to a second embodiment of the present invention will be described below mainly with reference to Figs. 9 to 13, focusing on the differences from the first embodiment.

第2実施形態においては、図9に示すように、噴射ノズル1とは一部異なる形状の噴射ノズル1aが噴射ノズル1にかえて設けられている。噴射ノズル1aは、ノズル本体16とは一部異なる形状のノズル本体16aがノズル本体16にかえて設けられている。ノズル本体16aは、先端部材62とは一部異なる形状の先端部材62aが先端部材62にかえて設けられている。ノズル本体16aは、嵌合部材100にかえて蓋部材100aが設けられている。 In the second embodiment, as shown in FIG. 9, an injection nozzle 1a having a partially different shape from the injection nozzle 1 is provided instead of the injection nozzle 1. In the injection nozzle 1a, a nozzle body 16a having a partially different shape from the nozzle body 16 is provided instead of the nozzle body 16. The nozzle body 16a is provided with a tip member 62a having a partially different shape from the tip member 62, instead of the tip member 62. The nozzle body 16a is provided with a lid member 100a instead of the fitting member 100.

先端部材62aは、ベース筒状部材61の先端部に嵌合されて接合される円筒状の基体部70と、ベース筒状部材61よりも先端側の第1噴出部71a(噴出部)とを有している。第1噴出部71aは、第1連通孔72a(連通孔)と、第1凸状ガイド部73a(凸状ガイド部)と、第1凹状ガイド部74a(凹状ガイド部)とを有している。 The distal end member 62a includes a cylindrical base portion 70 that is fitted and joined to the distal end portion of the base cylindrical member 61, and a first ejection portion 71a (spouting portion) located on the distal side of the base cylindrical member 61. have. The first ejection part 71a has a first communication hole 72a (communication hole), a first convex guide part 73a (convex guide part), and a first concave guide part 74a (concave guide part). .

第1連通孔72aは、先端部材62aの軸方向中間位置の内外を基体部70の径方向に連通する。 The first communication hole 72a communicates the inside and outside of the axially intermediate position of the tip member 62a in the radial direction of the base portion 70.

第1凸状ガイド部73aは、第1連通孔72aに対し基体部70の円周方向における一側かつ基体部70の軸方向における一側に、図10に示すように、第1連通孔72aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられている。第1凸状ガイド部73aは、第1連通孔72aとは反対側よりも第1連通孔72a側の方が基体部70の径方向における外側に位置する。 The first convex guide portion 73a is provided on one side of the base portion 70 in the circumferential direction and one side of the base portion 70 in the axial direction with respect to the first communication hole 72a, and protrudes outward from the base portion 70 in the radial direction of the base portion 70 while forming part of the first communication hole 72a, as shown in FIG. 10. The first convex guide portion 73a is located radially outward on the first communication hole 72a side of the base portion 70 than on the side opposite the first communication hole 72a.

第1凹状ガイド部74aは、第1連通孔72aに対し基体部70の円周方向における他側かつ基体部70の軸方向における他側に、第1連通孔72aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられている。第1凹状ガイド部74aは、第1連通孔72aとは反対側よりも第1連通孔72a側の方が基体部70の径方向における内側に位置する。 The first concave guide portion 74a forms a part of the first communication hole 72a on the other side in the circumferential direction of the base portion 70 and the other side in the axial direction of the base portion 70 with respect to the first communication hole 72a. It is provided so as to be recessed inward from the portion 70 in the radial direction of the base portion 70 . The first concave guide portion 74a is located on the inner side of the base portion 70 in the radial direction on the first communication hole 72a side than on the opposite side from the first communication hole 72a.

第2実施形態では、第1凸状ガイド部73aは、第1連通孔72aに対し基体部70の円周方向における第1側かつ基体部70の軸方向におけるベース筒状部材61とは反対側(すなわち基端開口部65とは反対側)に設けられている。第1凹状ガイド部74aは、第1連通孔72aに対し基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側(すなわち基端開口部65側)に設けられている。よって、第1連通孔72aは、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に向けて斜めに開口している。 In the second embodiment, the first convex guide portion 73a is provided on the first side in the circumferential direction of the base portion 70 with respect to the first communication hole 72a and on the opposite side to the base cylindrical member 61 in the axial direction of the base portion 70 (i.e., the opposite side to the base end opening 65). The first concave guide portion 74a is provided on the second side in the circumferential direction of the base portion 70 with respect to the first communication hole 72a and on the base cylindrical member 61 side in the axial direction of the base portion 70 (i.e., the base end opening 65 side). Therefore, the first communication hole 72a opens obliquely toward the outside in the radial direction of the base portion 70, the second side in the circumferential direction of the base portion 70, and the base cylindrical member 61 side in the axial direction of the base portion 70.

図11に示すように、先端部材62aは、第1噴出部71aよりも先端側に第2噴出部81a(噴出部)を有している。第2噴出部81aは、第1噴出部71aに対して、基体部70の軸方向の位置をずらし、基体部70の周方向の位置をずらしている。第2噴出部81aは、第1噴出部71aに対して基体部70の周方向における位置を90度ずらしている。 As shown in FIG. 11, the distal end member 62a has a second ejection portion 81a (ejection portion) closer to the distal end than the first ejection portion 71a. The second ejection part 81a is shifted from the first ejection part 71a in the axial direction of the base part 70, and in the circumferential direction of the base part 70. The second ejection part 81a is shifted by 90 degrees from the first ejection part 71a in the circumferential direction of the base body part 70.

第2噴出部81aは、第1噴出部71aと同様の形状である。第2噴出部81aは、第1連通孔72aと同様の第2連通孔82a(連通孔)と、第1凸状ガイド部73aと同様の第2凸状ガイド部83a(凸状ガイド部)と、第1凹状ガイド部74aと同様の第2凹状ガイド部84a(凹状ガイド部)とを有している。 The second ejection part 81a has the same shape as the first ejection part 71a. The second ejection part 81a has a second communication hole 82a (communication hole) similar to the first communication hole 72a, a second convex guide part 83a (convex guide part) similar to the first convex guide part 73a, and a second concave guide part 84a (concave guide part) similar to the first concave guide part 74a.

第2連通孔82aは、先端部材62aの軸方向中間位置の内外を基体部70の径方向に連通する。 The second communication hole 82a connects the inside and outside of the axially middle position of the tip member 62a in the radial direction of the base portion 70.

第2凸状ガイド部83aは、第2連通孔82aに対し基体部70の円周方向における第1側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に、第2連通孔82aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられている。第2凸状ガイド部83aは、第2連通孔82aとは反対側よりも第2連通孔82a側の方が基体部70の径方向における外側に位置する。 The second convex guide portion 83a is provided on the first side in the circumferential direction of the base portion 70 with respect to the second communication hole 82a and on the opposite side to the base cylindrical member 61 in the axial direction of the base portion 70, protruding outward from the base portion 70 in the radial direction of the base portion 70 while forming a part of the second communication hole 82a. The second convex guide portion 83a is located radially outward on the second communication hole 82a side of the base portion 70 than on the opposite side to the second communication hole 82a.

第2凹状ガイド部84aは、第2連通孔82aに対し基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に、第2連通孔82aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられている。第2凹状ガイド部84aは、第2連通孔82aとは反対側よりも第2連通孔82a側の方が基体部70の径方向における内側に位置する。 The second concave guide portion 84a is located on a second side of the second communication hole 82a in the circumferential direction of the base body 70 and on a side of the base cylindrical member 61 in the axial direction of the base body 70, as a part of the second communication hole 82a. It is recessed inward in the radial direction of the base body part 70 from the base body part 70 while forming the base body part 70 . The second concave guide portion 84a is located on the inner side of the base portion 70 in the radial direction on the second communication hole 82a side than on the opposite side from the second communication hole 82a.

第2連通孔82aは、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に向けて斜めに開口している。 The second communication hole 82a opens obliquely toward the outer side of the base portion 70 in the radial direction, the second side of the base portion 70 in the circumferential direction, and the base cylindrical member 61 side in the axial direction of the base portion 70. .

図12に示すように、先端部材62aは、第2噴出部81aよりも先端側に第3噴出部91a(噴出部)を有している。第3噴出部91aは、第2噴出部81aに対して、基体部70の軸方向の位置をずらし、基体部70の周方向の位置をずらしている。第3噴出部91aは、第2噴出部81aに対して基体部70の周方向における位置を90度ずらしている。 As shown in FIG. 12, the tip member 62a has a third ejection portion 91a (ejection portion) on the tip side of the second ejection portion 81a. The third ejection portion 91a is offset in the axial direction of the base portion 70 relative to the second ejection portion 81a, and is offset in the circumferential direction of the base portion 70 relative to the second ejection portion 81a. The third ejection portion 91a is offset in the circumferential direction of the base portion 70 by 90 degrees relative to the second ejection portion 81a.

第3噴出部91aは、第1噴出部71aおよび第2噴出部81aと同様の形状である。第3噴出部91aは、第1連通孔72aと同様の第3連通孔92a(連通孔)と、第1凸状ガイド部73aと同様の第3凸状ガイド部93a(凸状ガイド部)と、第1凹状ガイド部74aと同様の第3凹状ガイド部94a(凹状ガイド部)とを有している。 The third ejection part 91a has the same shape as the first ejection part 71a and the second ejection part 81a. The third ejection part 91a has a third communication hole 92a (communication hole) similar to the first communication hole 72a, a third convex guide part 93a (convex guide part) similar to the first convex guide part 73a, and a third concave guide part 94a (concave guide part) similar to the first concave guide part 74a.

第3連通孔92aは、先端部材62aの軸方向中間位置の内外を基体部70の径方向に連通する。 The third communication hole 92a communicates the inside and outside of the axially intermediate position of the tip member 62a in the radial direction of the base portion 70.

第3凸状ガイド部93aは、第3連通孔92aに対し基体部70の円周方向における第1側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に、第3連通孔92aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられている。第3凸状ガイド部93aは、第3連通孔92aとは反対側よりも第3連通孔92a側の方が基体部70の径方向における外側に位置する。 The third convex guide portion 93a is provided on the first side in the circumferential direction of the base portion 70 with respect to the third communication hole 92a and on the opposite side to the base cylindrical member 61 in the axial direction of the base portion 70, protruding outward from the base portion 70 in the radial direction of the base portion 70 while forming a part of the third communication hole 92a. The third convex guide portion 93a is located radially outward on the third communication hole 92a side than on the opposite side to the third communication hole 92a.

第3凹状ガイド部94aは、第3連通孔92aに対し基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に、第3連通孔92aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられている。第3凹状ガイド部94aは、第3連通孔92aとは反対側よりも第3連通孔92a側の方が基体部70の径方向における内側に位置する。 The third concave guide portion 94a is provided on the second side in the circumferential direction of the base portion 70 with respect to the third communication hole 92a and on the base cylindrical member 61 side in the axial direction of the base portion 70, forming a part of the third communication hole 92a and recessed inward in the radial direction of the base portion 70. The third concave guide portion 94a is located radially inward on the third communication hole 92a side of the base portion 70 than on the side opposite the third communication hole 92a.

第3連通孔92aは、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に向けて斜めに開口している。 The third communication hole 92a opens obliquely toward the outer side of the base portion 70 in the radial direction, the second side of the base portion 70 in the circumferential direction, and the base cylindrical member 61 side in the axial direction of the base portion 70. .

図13に示すように、先端部材62aは、第3噴出部91aよりも先端側に第4噴出部131a(噴出部)を有している。第4噴出部131aは、第3噴出部91aに対して、基体部70の軸方向の位置をずらし、基体部70の周方向の位置をずらしている。第4噴出部131aは、第3噴出部91aに対して基体部70の周方向における位置を90度ずらしている。 As shown in FIG. 13, the tip member 62a has a fourth ejection portion 131a (ejection portion) on the tip side of the third ejection portion 91a. The fourth ejection portion 131a is offset in the axial direction of the base portion 70 relative to the third ejection portion 91a, and is offset in the circumferential direction of the base portion 70 relative to the third ejection portion 91a. The fourth ejection portion 131a is offset in the circumferential direction of the base portion 70 by 90 degrees relative to the third ejection portion 91a.

第4噴出部131aは、第1噴出部71a、第2噴出部81aおよび第3噴出部91aと同様の形状である。第4噴出部131aは、第1連通孔72aと同様の第4連通孔132a(連通孔)と、第1凸状ガイド部73aと同様の第4凸状ガイド部133a(凸状ガイド部)と、第1凹状ガイド部74aと同様の第4凹状ガイド部134a(凹状ガイド部)とを有している。 The fourth ejection part 131a has the same shape as the first ejection part 71a, the second ejection part 81a, and the third ejection part 91a. The fourth ejection part 131a has a fourth communication hole 132a (communication hole) similar to the first communication hole 72a, a fourth convex guide part 133a (convex guide part) similar to the first convex guide part 73a, and a fourth concave guide part 134a (concave guide part) similar to the first concave guide part 74a.

第4連通孔132aは、先端部材62aの軸方向中間位置の内外を基体部70の径方向に連通する。 The fourth communication hole 132a communicates the inside and outside of the axially intermediate position of the tip member 62a in the radial direction of the base portion 70.

第4凸状ガイド部133aは、第4連通孔132aに対し基体部70の円周方向における第1側かつ基体部70の軸方向におけるベース筒状部材61とは反対側に、第4連通孔132aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられている。第4凸状ガイド部133aは、第4連通孔132aとは反対側よりも第4連通孔132a側の方が基体部70の径方向における外側に位置する。 The fourth convex guide portion 133a has a fourth communication hole located on the first side of the fourth communication hole 132a in the circumferential direction of the base portion 70 and on the opposite side of the base cylindrical member 61 in the axial direction of the base portion 70. It is provided so as to protrude outward from the base body 70 in the radial direction of the base body 70 while forming a part of the base body 132a. The fourth convex guide portion 133a is located on the outer side of the base portion 70 in the radial direction on the fourth communication hole 132a side than on the opposite side from the fourth communication hole 132a.

第4凹状ガイド部134aは、第4連通孔132aに対し基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に、第4連通孔132aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられている。第4凹状ガイド部134aは、第4連通孔132aとは反対側よりも第4連通孔132a側の方が基体部70の径方向における内側に位置する。 The fourth concave guide portion 134a is located on a second side of the fourth communication hole 132a in the circumferential direction of the base portion 70 and on a side of the base cylindrical member 61 in the axial direction of the base portion 70, as a part of the fourth communication hole 132a. It is recessed inward in the radial direction of the base body part 70 from the base body part 70 while forming the base body part 70 . The fourth concave guide portion 134a is located further inside the base portion 70 in the radial direction on the fourth communication hole 132a side than on the opposite side from the fourth communication hole 132a.

第4連通孔132aは、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に向けて斜めに開口している。 The fourth communication hole 132a opens obliquely toward the outside in the radial direction of the base portion 70, toward the second side in the circumferential direction of the base portion 70, and toward the base cylindrical member 61 in the axial direction of the base portion 70.

第1噴出部71a、第2噴出部81a、第3噴出部91a、第4噴出部131aは、この順に、基体部70の周方向に等間隔かつ基体部70の軸方向に等間隔で配置されている。 The first ejection section 71a, the second ejection section 81a, the third ejection section 91a, and the fourth ejection section 131a are arranged in this order at equal intervals in the circumferential direction of the base section 70 and at equal intervals in the axial direction of the base section 70.

第1連通孔72a、第2連通孔82a、第3連通孔92aおよび第4連通孔132aは、いずれも、基体部70の径方向における外側かつ基体部70の円周方向における第2側かつ基体部70の軸方向におけるベース筒状部材61側に向けて斜めに開口している。 The first communication hole 72a, the second communication hole 82a, the third communication hole 92a, and the fourth communication hole 132a are all located on the outer side in the radial direction of the base body part 70, on the second side in the circumferential direction of the base body part 70, and on the second side in the circumferential direction of the base body part 70. The portion 70 opens obliquely toward the base cylindrical member 61 in the axial direction.

以上により、ノズル本体16aは、先端側に第1噴出部71a、第2噴出部81a、第3噴出部91aおよび第4噴出部131aが設けられている。 As a result, the nozzle body 16a is provided with a first ejection part 71a, a second ejection part 81a, a third ejection part 91a, and a fourth ejection part 131a at the tip side.

ノズル本体16aは、先端部材62aの先端に設けられる蓋部材100aを有している。蓋部材100aは、有底円筒状であり、先端部材62aの軸方向における第4噴出部131aよりも先端側に嵌合している。蓋部材100aは、先端部材62aの先端部の外周部に固定されている。蓋部材100aは、先端部材62aの先端開口部を気密的に閉塞させる。言い換えれば、ノズル本体16aは、基端開口部65とは反対側の先端部が閉塞されている。 The nozzle body 16a has a lid member 100a provided at the tip of the tip member 62a. The lid member 100a is cylindrical with a bottom, and is fitted to the tip side of the fourth ejection part 131a in the axial direction of the tip member 62a. The lid member 100a is fixed to the outer periphery of the tip of the tip member 62a. The lid member 100a airtightly closes the tip opening of the tip member 62a. In other words, the tip of the nozzle body 16a opposite the base end opening 65 is closed.

第2実施形態の噴射ノズル1aにガン本体2を介して加圧気体供給源Aから加圧エアが供給されると、ノズル本体16aのベース筒状部材61の基端開口部65内に向けて、この基端開口部65との間に隙間をもって配置された内部ノズル部11から加圧エアが噴出する。すると、ノズル本体16a内を加圧エアが通過することになり、通過した加圧エアが、ノズル本体16aの軸方向中間位置の内外を基体部70の径方向に連通する第1連通孔72a、第2連通孔82a、第3連通孔92aおよび第4連通孔132aから外部に噴出する。 When pressurized air is supplied to the injection nozzle 1a of the second embodiment from the pressurized gas supply source A via the gun body 2, it is directed into the base end opening 65 of the base cylindrical member 61 of the nozzle body 16a. Pressurized air is ejected from the internal nozzle portion 11 which is disposed with a gap between the base end opening 65 and the nozzle portion 11 . Then, the pressurized air passes through the inside of the nozzle body 16a, and the passed pressurized air communicates with the inside and outside of the axially intermediate position of the nozzle body 16a in the radial direction of the base portion 70, the first communication hole 72a; It is ejected to the outside from the second communication hole 82a, the third communication hole 92a, and the fourth communication hole 132a.

加圧エアは、一部が第1連通孔72aから外部に噴出する際に、第1連通孔72aに対し基体部70の円周方向における第1側かつ基体部70の軸方向における基端開口部65とは反対側に、第1連通孔72aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられた第1凸状ガイド部73aと、第1連通孔72aに対し基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側に、第1連通孔72aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられた第1凹状ガイド部74aとによって案内されて、第1連通孔72aから基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側すなわち基端側に向けて噴出する。 When a portion of the pressurized air is ejected from the first communication hole 72a to the outside, the air is guided by a first convex guide portion 73a that protrudes outward from the base portion 70 in the radial direction of the base portion 70 while forming a part of the first communication hole 72a on the first side in the circumferential direction of the base portion 70 and on the side opposite the base end opening 65 in the axial direction of the base portion 70 with respect to the first communication hole 72a, and a first concave guide portion 74a that is recessed inward in the radial direction of the base portion 70 while forming a part of the first communication hole 72a on the second side in the circumferential direction of the base portion 70 and on the side of the base end opening 65 in the axial direction of the base portion 70 with respect to the first communication hole 72a, and is ejected from the first communication hole 72a toward the second side in the circumferential direction of the base portion 70 and the side of the base end opening 65 in the axial direction of the base portion 70, i.e., the base end side.

また、加圧エアは、一部が第2連通孔82aから外部に噴出する際に、第2連通孔82aに対し基体部70の円周方向における第1側かつ基体部70の軸方向における基端開口部65とは反対側に、第2連通孔82aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられた第2凸状ガイド部83aと、第2連通孔82aに対し基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側に、第2連通孔82aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられた第2凹状ガイド部84aとによって案内されて、第2連通孔82aから基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側すなわち基端側に向けて噴出する。 When a portion of the pressurized air is ejected from the second communication hole 82a to the outside, the air is guided by the second convex guide portion 83a, which is provided on the first side in the circumferential direction of the base portion 70 and opposite the base end opening 65 in the axial direction of the base portion 70 with respect to the second communication hole 82a and protrudes outward from the base portion 70 in the radial direction of the base portion 70, and the second concave guide portion 84a, which is provided on the second side in the circumferential direction of the base portion 70 and opposite the base end opening 65 in the axial direction of the base portion 70 with respect to the second communication hole 82a and recessed inward in the radial direction of the base portion 70 with respect to the second communication hole 82a, and is ejected from the second communication hole 82a toward the second side in the circumferential direction of the base portion 70 and the base end opening 65 side in the axial direction of the base portion 70, i.e., the base end side.

また、加圧エアは、一部が第3連通孔92aから外部に噴出する際に、第3連通孔92aに対し基体部70の円周方向における第1側かつ基体部70の軸方向における基端開口部65とは反対側に、第3連通孔92aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられた第3凸状ガイド部93aと、第3連通孔92aに対し基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側に、第3連通孔92aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられた第3凹状ガイド部94aとによって案内されて、第3連通孔92aから基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側すなわち基端側に向けて噴出する。 Further, when a part of the pressurized air is blown out from the third communication hole 92a, the pressurized air is on the first side in the circumferential direction of the base body 70 with respect to the third communication hole 92a and on the first side in the axial direction of the base body 70 with respect to the third communication hole 92a. a third convex guide portion 93a that is provided on the opposite side of the end opening 65 and protrudes outward from the base portion 70 in the radial direction of the base portion 70 while forming a part of the third communication hole 92a; A part of the third communicating hole 92a is formed on the second side of the third communicating hole 92a in the circumferential direction of the base body 70 and on the proximal opening 65 side in the axial direction of the base body 70. The second side in the circumferential direction of the base part 70 and the axis of the base part 70 are guided by the third concave guide part 94a that is recessed inward in the radial direction of the base part 70 and from the third communication hole 92a. The liquid is ejected toward the base end opening 65 side in the direction, that is, toward the base end side.

また、加圧エアは、一部が第4連通孔132aから外部に噴出する際に、第4連通孔132aに対し基体部70の円周方向における第1側かつ基体部70の軸方向における基端開口部65とは反対側に、第4連通孔132aの一部を形成しつつ基体部70から基体部70の径方向における外方に突出して設けられた第4凸状ガイド部133aと、第4連通孔132aに対し基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側に、第4連通孔132aの一部を形成しつつ基体部70から基体部70の径方向における内方に凹んで設けられた第4凹状ガイド部134aとによって案内されて、第4連通孔132aから基体部70の円周方向における第2側かつ基体部70の軸方向における基端開口部65側すなわち基端側に向けて噴出する。 When a portion of the pressurized air is ejected from the fourth communication hole 132a to the outside, the pressurized air is guided by a fourth convex guide portion 133a that protrudes outward from the base portion 70 in the radial direction of the base portion 70 while forming a part of the fourth communication hole 132a on the first side in the circumferential direction of the base portion 70 and on the opposite side of the base end opening 65 in the axial direction of the base portion 70 with respect to the fourth communication hole 132a, and a fourth concave guide portion 134a that is recessed inward in the radial direction of the base portion 70 while forming a part of the fourth communication hole 132a on the second side in the circumferential direction of the base portion 70 and on the side of the base end opening 65 in the axial direction of the base portion 70 with respect to the fourth communication hole 132a, and is ejected from the fourth communication hole 132a toward the second side in the circumferential direction of the base portion 70 and the side of the base end opening 65 in the axial direction of the base portion 70, i.e., the base end side.

以上により、二つの軸受13,14で筒状部材12に支持されたノズル本体16aが円周方向における第1側に向けて回転する。これにより、噴射ノズル1aは、ノズル本体16aが、内部を通過する流体の流れのみで首を振らずに旋回する。 As a result of the above, the nozzle body 16a supported by the cylindrical member 12 with the two bearings 13 and 14 rotates toward the first side in the circumferential direction. As a result, the nozzle body 16a of the injection nozzle 1a rotates without swinging, only due to the flow of the fluid passing through it.

第1実施形態と同様、ノズル本体16aの基端開口部65内に向けて、この基端開口部65との間に隙間をもって配置された内部ノズル部11から加圧エアを噴出させると、基端開口部65と内部ノズル部11との間の室111に負圧が生じることになる。その結果、開閉弁115に連通する外部から流体、具体的には外気の室111への吸引を行うと共に、流量調整弁121に連通する外部から流体、具体的には液体供給源Bの液体の室111への吸引を行う。 As in the first embodiment, when pressurized air is sprayed from the internal nozzle part 11, which is arranged with a gap between it and the base end opening 65 of the nozzle body 16a, into the base end opening 65, negative pressure is generated in the chamber 111 between the base end opening 65 and the internal nozzle part 11. As a result, fluid from the outside, which is connected to the on-off valve 115, specifically outside air, is sucked into the chamber 111, and fluid from the outside, which is connected to the flow rate adjustment valve 121, specifically liquid from the liquid supply source B, is sucked into the chamber 111.

そして、開閉弁115を介して導入される外気と、流量調整弁121を介して導入される液体と、加圧エアとが混合されながら、回転するノズル本体16aの第1噴出部71a、第2噴出部81a、第3噴出部91aおよび第4噴出部131aから噴出する。これにより、回転するノズル本体16aの第1噴出部71a、第2噴出部81a、第3噴出部91aおよび第4噴出部131aから流体を噴出させることができる。ノズル本体16aが回転することから、第1噴出部71a、第2噴出部81a、第3噴出部91aおよび第4噴出部131aからそれぞれ噴出された流体はトルネード状をなす。 While the outside air introduced via the on-off valve 115, the liquid introduced via the flow rate adjustment valve 121, and the pressurized air are mixed, the first ejection part 71a and the second ejection part 71a of the nozzle body 16a rotate. It is ejected from the ejection part 81a, the third ejection part 91a, and the fourth ejection part 131a. Thereby, fluid can be ejected from the first ejection part 71a, the second ejection part 81a, the third ejection part 91a, and the fourth ejection part 131a of the rotating nozzle main body 16a. Since the nozzle main body 16a rotates, the fluid ejected from the first ejection part 71a, the second ejection part 81a, the third ejection part 91a, and the fourth ejection part 131a forms a tornado shape.

噴射ノズル1aは、首を振らずに回転する直線形状のノズル本体16aが筒状部材12から延出している。このため、噴射ノズル1aは、例えば、管状の素材の一端開口側を切断して管体を作製する際に素材の一端開口側に残る切り粉を除去する場合に、ノズル本体16aの先端部を素材内に円滑に挿し込むことができる。これにより、第1噴出部71a、第2噴出部81a、第3噴出部91aおよび第4噴出部131aからそれぞれ手前に噴出される流体で、素材の開口側に残る切り粉等を素材の開口から排出させることができる。 The injection nozzle 1a has a linear nozzle body 16a that rotates without swinging, extending from the cylindrical member 12. For this reason, when, for example, cutting one open end of a tubular material to create a tube, the injection nozzle 1a can smoothly insert the tip of the nozzle body 16a into the material. This allows the fluids sprayed forward from the first spray part 71a, the second spray part 81a, the third spray part 91a, and the fourth spray part 131a to expel the chips and the like remaining on the open end side of the material from the opening of the material.

なお、第1,第2実施形態において、ノズル本体16,16aのベース筒状部材61の基端開口部65側に、図14に示すように、内径が他の部分よりも大径の嵌合穴部111を形成し、この嵌合穴部111に、ベース筒状部材61とは別体の回転力発生部材112を設けても良い。回転力発生部材112は、ベース筒状部材61の嵌合穴部111に圧入により嵌合されることになり、これにより、ベース筒状部材61に固定される。この回転力発生部材112は、内部ノズル部11の内部噴出口37から噴出する加圧エアがノズル本体16,16a内を通過する際に、加圧エアを案内して加圧エアによる力でノズル本体16,16aに回転力を発生させる。言い換えれば、ノズル本体16,16a内に、加圧エアの通過時に、通過する加圧エアよってノズル本体16,16aに回転力を生じさせる回転力発生部材112が設けられている。 In addition, in the first and second embodiments, as shown in FIG. 14, a fitting with a larger inner diameter than other parts is provided on the proximal opening 65 side of the base cylindrical member 61 of the nozzle bodies 16, 16a. A hole 111 may be formed, and a rotational force generating member 112 separate from the base cylindrical member 61 may be provided in this fitting hole 111. The rotational force generating member 112 is press-fitted into the fitting hole 111 of the base cylindrical member 61, and is thereby fixed to the base cylindrical member 61. This rotational force generating member 112 guides the pressurized air when the pressurized air ejected from the internal ejection port 37 of the internal nozzle part 11 passes through the nozzle bodies 16, 16a, and uses the force of the pressurized air to force the nozzle. A rotational force is generated in the main bodies 16, 16a. In other words, a rotational force generating member 112 is provided in the nozzle bodies 16, 16a, which generates a rotational force in the nozzle bodies 16, 16a by the pressurized air when the pressurized air passes therethrough.

ここで、図1~図8に示すノズル本体16を例にとり説明すると、ノズル本体16は、第1連通孔72から第1凸状ガイド部73および第1凹状ガイド部74によって案内されて加圧エアが噴出し、第2連通孔82から第2凸状ガイド部83および第2凹状ガイド部84によって案内されて加圧エアが噴出し、第3連通孔92から第3凸状ガイド部93および第3凹状ガイド部94によって案内されて加圧エアが噴出する。その際に、ノズル本体16には、円周方向における第1側に向けて回転する回転力が生じる。回転力発生部材112は、通過する加圧エアよってノズル本体16に、この方向と同方向、すなわち円周方向における第1側(先端部材62をその軸方向に沿ってベース筒状部材61とは反対側から見たときの時計回りの方向)に向けて回転する回転力を生じさせる。 Here, to explain the nozzle body 16 shown in FIGS. 1 to 8 as an example, the nozzle body 16 is guided from the first communication hole 72 by the first convex guide part 73 and the first concave guide part 74 and pressurized. Pressurized air is ejected from the second communication hole 82 while being guided by the second convex guide portion 83 and the second concave guide portion 84 , and pressurized air is ejected from the third communication hole 92 by the third convex guide portion 93 and the second concave guide portion 84 . The pressurized air is guided by the third concave guide portion 94 and blows out. At this time, a rotational force is generated in the nozzle body 16 to rotate it toward the first side in the circumferential direction. The rotation force generating member 112 is rotated in the same direction as this direction, that is, on the first side in the circumferential direction (the tip member 62 and the base cylindrical member 61 along the axial direction) by the passing pressurized air. This generates a rotational force that rotates in the clockwise direction (when viewed from the opposite side).

回転力発生部材112は、例えば、図14(a)に示すように、一方向に長い帯状の板材を、長さ方向を基準として捻ることで形成されている。回転力発生部材112は、図14(b)に示すようにベース筒状部材61の嵌合穴部111に嵌合し固定された状態では、その長さ方向に直交する断面の形状が、ベース筒状部材61の軸方向において、基端開口部65からベース筒状部材61の内部方向すなわち加圧エアが流れる方向の下流側に位置するほど、ノズル本体16の円周方向における第2側に位置するように、捻られている。回転力発生部材112は、これにより、通過する加圧エアによって、ノズル本体16に、この方向とは反対方向、すなわち円周方向における第1側(先端部材62をその軸方向に沿ってベース筒状部材61とは反対側から見たときの時計回りの方向)に向けて回転する回転力を生じさせる。 For example, as shown in FIG. 14(a), the rotational force generating member 112 is formed by twisting a strip-shaped plate material long in one direction with the length direction as a reference. When the rotational force generating member 112 is fitted and fixed in the fitting hole 111 of the base cylindrical member 61 as shown in FIG. In the axial direction of the cylindrical member 61, the further downstream from the base end opening 65 the inner direction of the base cylindrical member 61, that is, the direction in which pressurized air flows, the more the second side in the circumferential direction of the nozzle body 16 is located. Twisted to position. The rotational force generating member 112 is thereby caused to cause the passing pressurized air to cause the nozzle body 16 to move in a direction opposite to this direction, that is, on the first side in the circumferential direction (the tip member 62 is moved along the axial direction of the base cylinder). A rotational force that rotates in the clockwise direction when viewed from the side opposite to the shaped member 61 is generated.

このような回転力発生部材112を設けることで、ノズル本体16,16aを、内部を通過する流体の流れのみによって第1,第2実施形態よりも速い回転速度で旋回させることができる。 By providing such a rotational force generating member 112, the nozzle bodies 16, 16a can be rotated at a faster rotational speed than in the first and second embodiments only by the flow of fluid passing through the nozzle bodies 16, 16a.

(付記1)
噴射ノズルは、
筒状部材と、
基端開口部を有する円筒状をなすと共に先端側に噴出部が設けられたノズル本体と、
前記ノズル本体に該ノズル本体の中心軸線の延びる方向に離間して設けられて前記ノズル本体を前記筒状部材の内周部に回転可能に支持する二つの軸受と、
前記筒状部材内で前記基端開口部との間に隙間をもって配置されて前記基端開口部内に向けて加圧気体を噴出させる内部ノズル部と、を備え、
前記筒状部材には、前記二つの軸受のうち前記基端開口部に近い側の軸受よりも前記内部ノズル部側に、外部に連通可能な第1外部連通部が設けられ、
前記ノズル本体は、円筒状の基体部を有し、
前記噴出部は、
前記ノズル本体の軸方向中間位置の内外を前記基体部の径方向に連通する連通孔と、
前記連通孔に対し前記基体部の円周方向における一側かつ前記基体部の軸方向における一側に、前記連通孔の一部を形成しつつ前記基体部から該基体部の径方向における外方に突出して設けられた凸状ガイド部と、
前記連通孔に対し前記基体部の円周方向における他側かつ前記基体部の軸方向における他側に、前記連通孔の一部を形成しつつ前記基体部から該基体部の径方向における内方に凹んで設けられた凹状ガイド部と、
を有することを特徴とする。
(Appendix 1)
The injection nozzle is
A cylindrical member;
A nozzle body having a cylindrical shape with a base end opening and a jet part provided on a tip side thereof;
two bearings provided on the nozzle body at a distance from each other in a direction in which a central axis of the nozzle body extends, the bearings rotatably supporting the nozzle body on an inner peripheral portion of the cylindrical member;
an internal nozzle portion disposed within the cylindrical member with a gap between it and the base-end opening portion and configured to eject pressurized gas toward the base-end opening portion,
the cylindrical member is provided with a first external communication portion that is capable of communicating with the outside and is located closer to the internal nozzle portion than the bearing that is closer to the base end opening of the two bearings,
The nozzle body has a cylindrical base portion,
The ejection portion is
a communication hole that communicates the inside and outside of the nozzle body at an axially intermediate position with the base portion in a radial direction;
a convex guide portion provided on one side of the base portion in the circumferential direction and one side of the base portion in the axial direction with respect to the communication hole, the convex guide portion forming a part of the communication hole and protruding outward from the base portion in the radial direction of the base portion;
a concave guide portion provided on the other side of the base portion in the circumferential direction and on the other side of the base portion in the axial direction with respect to the communication hole, the concave guide portion forming a part of the communication hole and recessed inward from the base portion in the radial direction of the base portion;
The present invention is characterized by having the following.

(付記2)
上記付記1において、
前記凸状ガイド部は、前記連通孔に対し前記基体部の円周方向における一側かつ前記基体部の軸方向における前記基端開口部側に設けられ、
前記凹状ガイド部は、前記連通孔に対し前記基体部の円周方向における他側かつ前記基体部の軸方向における前記基端開口部とは反対側に設けられ、
前記ノズル本体には、前記基端開口部とは反対側の先端部に、前記基体部の中心軸線に対して斜めに先端噴出穴が設けられていることを特徴とする。
(Additional note 2)
In supplementary note 1 above,
The convex guide portion is provided on one side of the base portion in the circumferential direction with respect to the communication hole and on the base end opening side in the axial direction of the base portion,
The concave guide portion is provided on the other side of the communication hole in the circumferential direction of the base portion and on the opposite side of the base end opening in the axial direction of the base portion,
The nozzle body is characterized in that a distal end jet hole is provided at a distal end portion on the opposite side from the base end opening obliquely with respect to the central axis of the base portion.

(付記3)
上記付記1において、
前記凸状ガイド部は、前記連通孔に対し前記基体部の円周方向における一側かつ前記基体部の軸方向における前記基端開口部とは反対側に設けられ、
前記凹状ガイド部は、前記連通孔に対し前記基体部の円周方向における他側かつ前記基体部の軸方向における前記基端開口部側に設けられ、
前記ノズル本体は、前記基端開口部とは反対側の先端部が閉塞されていることを特徴とする。
(Appendix 3)
In supplementary note 1 above,
The convex guide portion is provided on one side of the communication hole in the circumferential direction of the base portion and on the opposite side of the base end opening in the axial direction of the base portion,
The concave guide portion is provided on the other side of the base portion in the circumferential direction with respect to the communication hole and on the base end opening side in the axial direction of the base portion,
The nozzle body is characterized in that a distal end portion opposite to the proximal opening portion is closed.

(付記4)
上記付記1乃至付記3のいずれか一つにおいて、
前記ノズル本体内には、前記加圧気体の通過時に、該加圧気体によって前記ノズル本体に回転力を生じさせる回転力発生部材が設けられており、
前記回転力発生部材は、前記連通孔から前記凸状ガイド部および前記凹状ガイド部によって案内されて前記加圧気体が噴出する際に前記ノズル本体に生じる回転力と同方向の回転力を生じさせることを特徴とする。
(Appendix 4)
In any one of Supplementary Note 1 to Supplementary Note 3,
a rotational force generating member is provided within the nozzle body, the rotational force being generated in the nozzle body by the pressurized gas when the pressurized gas passes through the nozzle body;
The rotational force generating member is characterized in that it generates a rotational force in the same direction as the rotational force generated in the nozzle body when the pressurized gas is ejected from the communicating hole, guided by the convex guide portion and the concave guide portion.

(付記5)
上記付記1乃至付記4のいずれか一つにおいて、
前記筒状部材には、前記二つの軸受のうち前記基端開口部に近い側の軸受よりも前記内部ノズル部側に、外部に連通可能な第2外部連通部が、前記第1外部連通部とは別に設けられていることを特徴とする。
(Appendix 5)
In any one of Supplementary Note 1 to Supplementary Note 4,
The cylindrical member is characterized in that a second external communication portion capable of communicating with the outside is provided separately from the first external communication portion, on the internal nozzle portion side of the bearing closer to the base end opening of the two bearings.

1,1a 噴射ノズル
11 内部ノズル部
12 筒状部材
13,14 軸受
16,16a ノズル本体
65 基端開口部
70 基体部
71,71a 第1噴出部(噴出部)
72,72a 第1連通孔(連通孔)
73,73a 第1凸状ガイド部(凸状ガイド部)
74,74a 第1凹状ガイド部(凹状ガイド部)
81,81a 第2噴出部(噴出部)
82,82a 第2連通孔(連通孔)
83,83a 第2凸状ガイド部(凸状ガイド部)
84,84a 第2凹状ガイド部(凹状ガイド部)
91,91a 第3噴出部(噴出部)
92,92a 第3連通孔(連通孔)
93,93a 第3凸状ガイド部(凸状ガイド部)
94,94a 第3凹状ガイド部(凹状ガイド部)
101 先端噴出穴
115 開閉弁(第1外部連通部)
121 流量調整弁(第2外部連通部)
131a 第4噴出部(噴出部)
132a 第4連通孔(連通孔)
133a 第4凸状ガイド部(凸状ガイド部)
134a 第4凹状ガイド部(凹状ガイド部)
REFERENCE SIGNS LIST 1, 1a Injection nozzle 11 Internal nozzle portion 12 Cylindrical member 13, 14 Bearing 16, 16a Nozzle body 65 Base end opening 70 Base portion 71, 71a First ejection portion (ejection portion)
72, 72a First communication hole (communication hole)
73, 73a First convex guide portion (convex guide portion)
74, 74a First concave guide portion (concave guide portion)
81, 81a Second jetting portion (jetting portion)
82, 82a Second communication hole (communication hole)
83, 83a: second convex guide portion (convex guide portion)
84, 84a Second concave guide portion (concave guide portion)
91, 91a Third jetting section (jetting section)
92, 92a Third communication hole (communication hole)
93, 93a Third convex guide portion (convex guide portion)
94, 94a Third concave guide portion (concave guide portion)
101 Tip ejection hole 115 Opening/closing valve (first external communication part)
121 Flow rate control valve (second external communication part)
131a Fourth jetting part (jetting part)
132a Fourth communication hole (communication hole)
133a Fourth convex guide portion (convex guide portion)
134a Fourth concave guide portion (concave guide portion)

Claims (5)

筒状部材と、
基端開口部を有する円筒状をなすと共に先端側に噴出部が設けられたノズル本体と、
前記ノズル本体に該ノズル本体の中心軸線の延びる方向に離間して設けられて前記ノズル本体を前記筒状部材の内周部に回転可能に支持する二つの軸受と、
前記筒状部材内で前記基端開口部との間に隙間をもって配置されて前記基端開口部内に向けて加圧気体を噴出させる内部ノズル部と、を備え、
前記筒状部材には、前記二つの軸受のうち前記基端開口部に近い側の軸受よりも前記内部ノズル部側に、外部に連通可能な第1外部連通部が設けられ、
前記ノズル本体は、円筒状の基体部を有し、
前記噴出部は、
前記ノズル本体の軸方向中間位置の内外を前記基体部の径方向に連通する連通孔と、
前記連通孔に対し前記基体部の円周方向における一側かつ前記基体部の軸方向における一側に、前記連通孔の一部を形成しつつ前記基体部から該基体部の径方向における外方に突出して設けられた凸状ガイド部と、
前記連通孔に対し前記基体部の円周方向における他側かつ前記基体部の軸方向における他側に、前記連通孔の一部を形成しつつ前記基体部から該基体部の径方向における内方に凹んで設けられた凹状ガイド部と、
を有することを特徴とする噴射ノズル。
A cylindrical member;
A nozzle body having a cylindrical shape with a base end opening and a jet part provided on a tip side thereof;
two bearings provided on the nozzle body at a distance from each other in a direction in which a central axis of the nozzle body extends, the bearings rotatably supporting the nozzle body on an inner peripheral portion of the cylindrical member;
an internal nozzle portion disposed within the cylindrical member with a gap between it and the base-end opening portion and configured to eject pressurized gas toward the base-end opening portion,
the cylindrical member is provided with a first external communication portion that is capable of communicating with the outside and is located closer to the internal nozzle portion than the bearing that is closer to the base end opening of the two bearings,
The nozzle body has a cylindrical base portion,
The ejection portion is
a communication hole that communicates the inside and outside of the nozzle body at an axially intermediate position with the base portion in a radial direction;
a convex guide portion provided on one side of the base portion in the circumferential direction and one side of the base portion in the axial direction with respect to the communication hole, the convex guide portion forming a part of the communication hole and protruding outward from the base portion in the radial direction of the base portion;
a concave guide portion provided on the other side of the base portion in the circumferential direction and on the other side of the base portion in the axial direction with respect to the communication hole, the concave guide portion forming a part of the communication hole and recessed inward from the base portion in the radial direction of the base portion;
An injection nozzle comprising:
前記凸状ガイド部は、前記連通孔に対し前記基体部の円周方向における一側かつ前記基体部の軸方向における前記基端開口部側に設けられ、
前記凹状ガイド部は、前記連通孔に対し前記基体部の円周方向における他側かつ前記基体部の軸方向における前記基端開口部とは反対側に設けられ、
前記ノズル本体には、前記基端開口部とは反対側の先端部に、前記基体部の中心軸線に対して斜めに先端噴出穴が設けられていることを特徴とする請求項1に記載の噴射ノズル。
the protruding guide portion is provided on one side of the base portion in a circumferential direction with respect to the communication hole and on a side of the base end opening portion in an axial direction of the base portion,
the concave guide portion is provided on the other side of the base portion in the circumferential direction with respect to the communication hole and on the opposite side of the base end opening portion in the axial direction of the base portion,
2. The injection nozzle according to claim 1, wherein a tip ejection hole is provided in the tip portion of the nozzle body opposite the base end opening, the tip ejection hole being obliquely disposed with respect to a central axis of the base portion.
前記凸状ガイド部は、前記連通孔に対し前記基体部の円周方向における一側かつ前記基体部の軸方向における前記基端開口部とは反対側に設けられ、
前記凹状ガイド部は、前記連通孔に対し前記基体部の円周方向における他側かつ前記基体部の軸方向における前記基端開口部側に設けられ、
前記ノズル本体は、前記基端開口部とは反対側の先端部が閉塞されていることを特徴とする請求項1に記載の噴射ノズル。
The convex guide portion is provided on one side of the communication hole in the circumferential direction of the base portion and on the opposite side of the base end opening in the axial direction of the base portion,
The concave guide portion is provided on the other side of the communication hole in the circumferential direction of the base portion and on the base end opening side in the axial direction of the base portion,
The injection nozzle according to claim 1, wherein the nozzle main body has a closed end portion opposite to the base end opening.
前記ノズル本体内には、前記加圧気体の通過時に、該加圧気体によって前記ノズル本体に回転力を生じさせる回転力発生部材が設けられており、
前記回転力発生部材は、前記連通孔から前記凸状ガイド部および前記凹状ガイド部によって案内されて前記加圧気体が噴出する際に前記ノズル本体に生じる回転力と同方向の回転力を生じさせることを特徴とする請求項1に記載の噴射ノズル。
a rotational force generating member is provided within the nozzle body, the rotational force being generated in the nozzle body by the pressurized gas when the pressurized gas passes through the nozzle body;
2. The injection nozzle according to claim 1, wherein the rotational force generating member generates a rotational force in the same direction as a rotational force generated in the nozzle body when the pressurized gas is ejected from the communication hole while being guided by the convex guide portion and the concave guide portion.
前記筒状部材には、前記二つの軸受のうち前記基端開口部に近い側の軸受よりも前記内部ノズル部側に、外部に連通可能な第2外部連通部が、前記第1外部連通部とは別に設けられていることを特徴とする請求項1乃至4のいずれか一項に記載の噴射ノズル。 The injection nozzle according to any one of claims 1 to 4, characterized in that the cylindrical member is provided with a second external communication part that can communicate with the outside, separate from the first external communication part, on the inner nozzle part side of the bearing that is closer to the base end opening of the two bearings.
JP2023073584A 2022-09-21 2023-04-27 Spray nozzle Pending JP2024044990A (en)

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JP2022150151 2022-09-21

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