JP2017129256A - Y-shaped valve - Google Patents

Y-shaped valve Download PDF

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Publication number
JP2017129256A
JP2017129256A JP2016011036A JP2016011036A JP2017129256A JP 2017129256 A JP2017129256 A JP 2017129256A JP 2016011036 A JP2016011036 A JP 2016011036A JP 2016011036 A JP2016011036 A JP 2016011036A JP 2017129256 A JP2017129256 A JP 2017129256A
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Prior art keywords
stem
bonnet
valve
seat
guide ring
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JP6697800B2 (en
Inventor
圭吾 小林
Keigo Kobayashi
圭吾 小林
秀永 星山
Shiyuuei Hoshiyama
秀永 星山
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Fujikin Inc
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Fujikin Inc
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details
    • F16K1/34Cutting-off parts, e.g. valve members, seats
    • F16K1/42Valve seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/02Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/08Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent a work powder that is generated by sliding between a stem of a Y-shaped valve and an encapsulation mechanism, from being mixed into a fluid, by collecting the worn powder.SOLUTION: The Y-shaped valve comprises: a substantially Y-shaped body including a pipe-like part connected to piping and a branch pipe part extending obliquely to the pipe-like part; a substantially cylindrical hollow bonnet part of which one end is connected to the branch pipe part of the body part; an actuator part connected to the other end of the bonnet part; a stick-like stem which is inserted through the bonnet part and of which one end is pushed and pulled by the actuator part; and a valve element which is attached to the other end of the stem and sized so as to completely close an opening that is formed on a valve seat provided within the pipe-like part of the body part. A guide ring and a packing are fitted between the bonnet part and the stem that is inserted through the bonnet part, a conical tapered part is formed in a first end of the guide ring, and a recess is formed arcuate on a sliding surface of the tapered part with the stem.SELECTED DRAWING: Figure 2

Description

本発明はY型バルブに関する。さらに詳しくは開閉操作の繰り返しに伴って発生する構成部品の磨耗粉を流体側に排出しないY型バルブに関する。 The present invention relates to a Y-type valve. More specifically, the present invention relates to a Y-type valve that does not discharge wear powder of components generated by repeated opening / closing operations to the fluid side.

配管内の液体や蒸気といった流体の配管中の流れを開閉するため、或は当該配管中の流体の流れの量(流量)を調整するために設けられるY型バルブとして、弁棒で吊り下げられて弁箱内を開閉位置間で移動する弁体と、弁体よりも上流側に配されて当該弁体を、移動方向に案内するガイドを備えたものが知られている(特許文献1参照)。 It is suspended by a valve stem as a Y-type valve provided to open and close the flow of fluid such as liquid and vapor in the piping, or to adjust the amount of fluid flow (flow rate) in the piping. A valve body that moves between open and closed positions in the valve box and a guide that is arranged upstream of the valve body and guides the valve body in the moving direction is known (see Patent Document 1). ).

特許文献1において、Y型弁にはステムと弁箱との摺動による摩耗発生の問題点が認識されており、特許文献1記載の発明ではかかる摺動による摩耗を抑制するために摺動防止手段を設けることを提案している。 In Patent Document 1, the problem of the occurrence of wear due to sliding between the stem and the valve box is recognized in the Y-type valve. In the invention described in Patent Document 1, the sliding prevention is performed in order to suppress wear due to such sliding. Proposes to provide means.

しかしながら、振動を抑制するだけでは摩耗の問題を解決することができず、摩耗の発生により磨耗粉が発生し、流体中に混入するという問題がある。   However, the problem of wear cannot be solved only by suppressing vibration, and there is a problem that wear powder is generated due to the wear and mixed into the fluid.

Y型バルブのステムと弁箱との摺動による磨耗粉の発生を技術的課題としたものはないが、可変容量形ポンプや制御弁をパイロット圧によって作動制御するためのパイロット弁におけるプッシュロッド(8)のシール装置において、プッシュロッド(8)とプッシュロッド案内面(26)との摺動による磨耗粉発生の問題が認識されていて、図8に示されるように、プッシュロッド案内面(26)の最上部にダストシール(27)を設け、中間部にオイルシール(29)を設け、ダストシール(27)の下面に隣接して、磨耗粉を溜めるための凹部(28)を設けることで、摺動隙間への磨耗粉の侵入を防止している(特許文献2参照)。   Although there is no technical problem with the generation of wear powder due to sliding between the Y-type valve stem and the valve box, the push rod in the pilot valve for controlling the operation of the variable displacement pump and control valve with pilot pressure ( In the sealing device of 8), the problem of generation of wear powder due to sliding between the push rod (8) and the push rod guide surface (26) is recognized. As shown in FIG. 8, the push rod guide surface (26 ) Is provided with a dust seal (27), an intermediate portion is provided with an oil seal (29), and a recess (28) for accumulating wear powder is provided adjacent to the lower surface of the dust seal (27). Intrusion of wear powder into the moving gap is prevented (see Patent Document 2).

特許第2658669号公報Japanese Patent No. 2658669 実公平7−49042号公報No. 7-49042

このように、パイロット弁におけるプッシュロッドのシール装置に採用された摺動隙間への磨耗粉の侵入の防止機構は、プッシュロッド案内面(26)の最上部にダストシール(27)を設け、中間部にオイルシール(29)を設け、ダストシール(27)の下面に隣接して、磨耗粉を溜めるための凹部(28)を設けており、高圧流体(例えば、0.5−1MPa)用のY型バルブの封止機構に、かかる構造を採用することは構造上困難である。   As described above, the mechanism for preventing wear powder from entering the sliding gap employed in the push rod sealing device in the pilot valve is provided with the dust seal (27) at the uppermost portion of the push rod guide surface (26), and the intermediate portion. Is provided with an oil seal (29), a recess (28) for accumulating wear powder is provided adjacent to the lower surface of the dust seal (27), and a Y-type for high-pressure fluid (for example, 0.5-1 MPa) It is difficult to adopt such a structure for the valve sealing mechanism.

本発明は、Y型バルブのステムと封止機構との間の摺動により発生する磨耗粉を収集し、流体内への混入を防止することを目的とするものである。   An object of the present invention is to collect wear powder generated by sliding between a stem of a Y-type valve and a sealing mechanism, and to prevent entry into the fluid.

本発明の一態様に係るY型バルブは、配管に接続される管状部と該管状部に対して斜め方向に延設された枝管部を備えた略Y状を呈したボディ部と、
該ボディ部の枝管部に、その一端が接続された略円筒状の中空のボンネット部と、
該ボンネット部の他端に接続されたアクチュエータ部と、
前記ボンネット部を挿通し、前記アクチュエータ部によって一端が押し引き操作される棒状のステムと、
該ステムの他端に取り付けられ、前記ボディ部の管状部内に設けられた弁座に形成された開口部を完全に閉塞する大きさを有する弁体を備え、当該弁体の振動防止手段として、前記ボディ部の枝管部の首部の長さが、開位置の弁体の移動方向の長さの過半長を超える大部分を収納する長さを有するY型バルブであって、
前記ボンネット部の前記ボディ部側の端部に前記ステムを挿通する孔が穿設された座が設けられ、
前記ボンネット部と当該ボンネット部を挿通しているステムとの間の隙間に略円筒状を呈し前記座と一端が当接するガイドリングと、該ガイドリングの他端と当接する環状の1以上のパッキンが嵌装され、
前記パッキンがバネによって前記座の方向に付勢され、
前記ガイドリングの前記座と当接する第1端部に円錐状の先細り部が形成され、
該先細り部の前記ステムとの摺動面に円弧状に凹部が形成されている
ことを特徴とする。
A Y-type valve according to an aspect of the present invention is a body portion having a substantially Y shape including a tubular portion connected to a pipe and a branch pipe portion extending obliquely with respect to the tubular portion;
A substantially cylindrical hollow bonnet portion having one end connected to the branch pipe portion of the body portion;
An actuator part connected to the other end of the bonnet part;
A rod-shaped stem that is inserted through the bonnet portion and is pushed and pulled at one end by the actuator portion;
A valve body attached to the other end of the stem and having a size that completely closes an opening formed in a valve seat provided in the tubular portion of the body portion, as vibration preventing means for the valve body, A Y-type valve having a length that accommodates most of the length of the neck portion of the branch pipe portion of the body portion that exceeds a majority of the length in the moving direction of the valve body in the open position,
A seat having a hole through which the stem is inserted is provided at an end of the bonnet portion on the body portion side,
A guide ring having a substantially cylindrical shape in a gap between the bonnet portion and a stem inserted through the bonnet portion, the seat being in contact with one end, and one or more annular packings in contact with the other end of the guide ring Is fitted,
The packing is biased toward the seat by a spring;
A conical tapered portion is formed at the first end of the guide ring that contacts the seat;
A concave portion is formed in an arc shape on a sliding surface of the tapered portion with the stem.

本発明の一態様に係るY型バルブは、Y型バルブのボンネット部のボディ部側の端部にステムを挿通する孔が穿設された座が設けられ、ボンネット部と当該ボンネット部を挿通しているステムとの間の隙間に略円筒状を呈し前記座と一端が当接するガイドリングと、該ガイドリングの他端と当接する環状の1以上のパッキンが嵌装され、当該パッキンがバネによって前記座の方向に付勢され、前記ガイドリングの前記座と当接する第1端部に円錐状の先細り部が形成され、該先細り部の前記ステムとの摺動面に円弧状に凹部が形成されているので、Y型バルブのステムと封止機構との間の摺動により発生する磨耗粉を収集することができ、ひいては流体内への混入を防止することができる。なお、本発明においては、ガイドリングとパッキンを用いてステムのシールを行っているのであるが、ガイドリングの主たる役割はステムの案内であり、パッキンの主たる役割はパッキン自体が変形することによりシールを行うことである。   A Y-type valve according to an aspect of the present invention is provided with a seat having a hole through which a stem is inserted at an end of a bonnet part of a Y-type valve, and through which the bonnet part is inserted. A guide ring that has a substantially cylindrical shape in the gap between the stem and the seat and one end abuts, and one or more annular packings that abut the other end of the guide ring, and the packing is A conical taper is formed at the first end of the guide ring that is urged in the direction of the seat and abuts against the seat of the guide ring, and an arcuate recess is formed on the sliding surface of the taper with the stem. Therefore, it is possible to collect the abrasion powder generated by the sliding between the stem of the Y-type valve and the sealing mechanism, and to prevent the contamination into the fluid. In the present invention, the stem is sealed by using the guide ring and the packing. However, the main role of the guide ring is to guide the stem, and the main role of the packing is to seal the seal itself by deformation. Is to do.

本発明のY型バルブの外観を示す斜視図である。It is a perspective view which shows the external appearance of the Y-type valve | bulb of this invention. 本発明のY型バルブの一例の縦断面説明図である。It is a longitudinal cross-sectional explanatory drawing of an example of the Y-type valve | bulb of this invention. (a)は本発明のY型バルブ装置を構成するガイドリングの断面説明図であり、(b)は(a)の要部断面図である。(A) is sectional explanatory drawing of the guide ring which comprises the Y-type valve apparatus of this invention, (b) is principal part sectional drawing of (a). 図3のガイドリングの斜視図である。It is a perspective view of the guide ring of FIG. 本発明のY型バルブを構成するボディ部の断面説明図である。It is a section explanatory view of the body part which constitutes the Y type valve of the present invention. 本発明のY型バルブを構成するパッキンの斜視図である。It is a perspective view of the packing which comprises the Y-type valve | bulb of this invention. 従来技術に係るY型バルブの一例の概要を示す説明図である。It is explanatory drawing which shows the outline | summary of an example of the Y-type valve | bulb which concerns on a prior art. 従来技術に係るパイロット弁におけるプッシュロッド(8)のシール装置の要部説明図である。It is principal part explanatory drawing of the sealing device of the push rod (8) in the pilot valve which concerns on a prior art.

添付図面を参照しながら本発明のY型バルブについて、以下に詳細に説明する。
図1は本発明のY型バルブの外観を示す斜視図である。図2は本発明のY型バルブの一例の縦断面説明図である。図3の(a)は本発明のY型バルブ装置を構成するガイドリングの断面説明図であり、図3の(b)は図3の(a)の要部断面図である。図4は図3のガイドリングの斜視図である。図5は本発明のY型バルブを構成するボディ部の断面説明図である。図6は本発明のY型バルブを構成するパッキンの斜視図である。
The Y-type valve of the present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 is a perspective view showing the appearance of a Y-type valve of the present invention. FIG. 2 is an explanatory longitudinal sectional view of an example of the Y-type valve of the present invention. FIG. 3 (a) is a cross-sectional explanatory view of a guide ring constituting the Y-type valve device of the present invention, and FIG. 3 (b) is a cross-sectional view of the main part of FIG. 3 (a). FIG. 4 is a perspective view of the guide ring of FIG. FIG. 5 is a cross-sectional explanatory view of a body portion constituting the Y-type valve of the present invention. FIG. 6 is a perspective view of a packing constituting the Y-type valve of the present invention.

[実施形態1]
図1−6を参照すると、実施形態1に係るY型バルブは、配管に接続される管状部(1P)と該管状部(1P)に対して斜め方向に延設された枝管部(1b)を備えた略Y状を呈したボディ部(1)を具備している。
[Embodiment 1]
Referring to FIGS. 1-6, the Y-type valve according to Embodiment 1 includes a tubular part (1P) connected to a pipe and a branch pipe part (1b) extending in an oblique direction with respect to the tubular part (1P). ) With a substantially Y-shaped body portion (1).

該ボディ部(1)には枝管部(1b)が一体的に接合(例えば、溶接)されている。ボディ部(1)及び枝管部(1b)の材質として、例えばステンレス鋼(SUS316)が採用される。   A branch pipe portion (1b) is integrally joined (for example, welded) to the body portion (1). For example, stainless steel (SUS316) is adopted as the material of the body part (1) and the branch pipe part (1b).

そして当該枝管部(1b)には、略円筒状の中空のボンネット部(1)の一端(B1)がねじによる螺着、或いは差し込み溶接などの接合手段により接続される。   Then, one end (B1) of the substantially cylindrical hollow bonnet portion (1) is connected to the branch pipe portion (1b) by a screwing method using screws or a joining means such as insertion welding.

該ボンネット部(1)の他端(B2)にはアクチュエータ部(AC)が接続されている。該アクチュエータ(AC)は、ケーシング(C)と、該ケーシング(C)内に配され、後述するステム(ST)に固着されたピストン(P)と、圧縮コイルバネ(SP)とを具備しており、ピストン(P)は前記圧縮コイルバネ(SP)によって常時下方(ボディ部(1)に向かう方向)に付勢されている。因みに、図2は、アクチュエータ(AC)内に配されたピストン(P)が圧縮コイルバネ(SP)によって押し下げられた状態を示しており、この場合、後述するステム(ST)の一端に設けられた弁体(2)及び弁体(2)に嵌装されたシール(2S)が、弁座(1S)によって画成された開口部(1op)を閉塞する。   The actuator part (AC) is connected to the other end (B2) of the bonnet part (1). The actuator (AC) includes a casing (C), a piston (P) disposed in the casing (C) and fixed to a stem (ST) described later, and a compression coil spring (SP). The piston (P) is always urged downward (in the direction toward the body part (1)) by the compression coil spring (SP). Incidentally, FIG. 2 shows a state in which the piston (P) disposed in the actuator (AC) is pushed down by the compression coil spring (SP). In this case, the piston (P) is provided at one end of the stem (ST) described later. The valve body (2) and the seal (2S) fitted to the valve body (2) close the opening (1op) defined by the valve seat (1S).

Y型バルブを開放する際には、作動油若しくは圧縮空気が入口(IN)と通路(PA)を介してケーシング(C)に導入され、この作動油若しくは圧縮空気の圧力が圧縮コイルバネ(SP)の弾性力に抗して前記ピストン(P)を上方(ボディ部(1)から遠ざかる方向)に移動させる。なお、ピストン(P)には限定されることはないが、図2に示されるようにピストンリング(PR)が嵌装され得る。 When opening the Y-type valve, hydraulic oil or compressed air is introduced into the casing (C) through the inlet (IN) and the passage (PA), and the pressure of the hydraulic oil or compressed air is compressed into the compression coil spring (SP). The piston (P) is moved upward (in a direction away from the body part (1)) against the elastic force of. Although not limited to the piston (P), a piston ring (PR) can be fitted as shown in FIG.

Y型バルブは、更に棒状のステム(ST)を具備しており、ステム(ST)は前記ボンネット部(B)を挿通している。前述のとおり、ステム(ST)にはピストン(P)が固着されていて、アクチュエータ部(AC)によってステム(ST)の一端が押し引き操作される。   The Y-type valve further includes a rod-shaped stem (ST), and the stem (ST) passes through the bonnet portion (B). As described above, the piston (P) is fixed to the stem (ST), and one end of the stem (ST) is pushed and pulled by the actuator portion (AC).

前記棒状のステム(ST)の他端には弁体(2)が取り付けられている。当該弁体(2)は、前記ボディ部(B)の管状部(1P)内に設けられた弁座(1S)に形成された開口部(1op)を完全に閉塞する大きさ(幾何学的形状及び寸法)を有している。 A valve body (2) is attached to the other end of the rod-shaped stem (ST). The valve body (2) has a size (geometrical) that completely closes the opening (1op) formed in the valve seat (1S) provided in the tubular portion (1P) of the body portion (B). Shape and dimensions).

本実施形態のY型バルブは、前述の特許文献1に開示された振動防止手段を具備している。すなわち、弁体(2)の振動防止の第1手段として、ボディ部(1)の枝管部(1b)の首部(1n)の長さが、開位置の弁体(2)の移動方向の長さの過半長を超える大部分を収納する長さを有すること、弁体(2)の振動防止の第2手段として、前記弁体(2)の外周囲に沿った接触幅が拡幅された拡幅部を有するウイングガイド(3)を備えていること、及び弁体(2)の振動防止の第3手段として、前記ボディ部(1)に、前記弁体(2)の径方向周囲に沿って包囲部材が設けられていて、当該包囲部材が全開位置での前記弁体の下端近傍にまで包囲領域が存在していること、のうちの1つ以上(すなわち、第1手段、第2手段及び第3手段のうちの1以上)を備えている。 The Y-type valve of this embodiment includes the vibration preventing means disclosed in Patent Document 1 described above. That is, as a first means for preventing vibration of the valve body (2), the length of the neck portion (1n) of the branch pipe portion (1b) of the body portion (1) is set in the moving direction of the valve body (2) in the open position. As a second means for preventing vibration of the valve body (2), the contact width along the outer periphery of the valve body (2) has been widened. As a third means for providing a wing guide (3) having a widened portion and preventing vibration of the valve body (2), the body portion (1) is provided along the circumference of the valve body (2) in the radial direction. One or more of the surrounding member is provided to the vicinity of the lower end of the valve body in the fully open position (that is, the first means, the second means) And one or more of the third means).

前記ボンネット部(B)のボディ部(1)側の端部(B1)には、ステム(ST)を挿通する孔(OP)が穿設されたテーパー状の座(B1s)が設けられている。図2及び4を参照すると、図示された実施形態では、テーパー状の座(B1s)の幾何学的形状は部分円錐状であり、後述するボンネット部(B)のボディ部(1)側の端部(B1)に形成された座(B1s)と当接するガイドリング(S1)の第1端部(S1a)に形成された円錐状の先細り部(T)とそれぞれの外面同士が密着するようにされているが、テーパー状の形状に限定されず、例えば、円環状のものも採用され得る。   A tapered seat (B1s) having a hole (OP) through which the stem (ST) is inserted is provided at the end (B1) on the body part (1) side of the bonnet part (B). . Referring to FIGS. 2 and 4, in the illustrated embodiment, the tapered seat (B1s) has a partially conical geometric shape, and the end of the bonnet part (B) on the body part (1) side which will be described later. The conical taper portion (T) formed at the first end (S1a) of the guide ring (S1) that contacts the seat (B1s) formed at the portion (B1) and the outer surfaces thereof are in close contact with each other. However, the shape is not limited to the tapered shape, and for example, an annular shape may be adopted.

更に本実施形態のY型バルブは、ボンネット部(B)と当該ボンネット部(B)を挿通しているステム(ST)との間の隙間に略円筒状を呈し前記座(B1s)と一端が当接する封止機構(すなわち、ガイドリング(S1)と、該ガイドリング(S1)の他端と当接する環状の1以上のパッキン(S2))が嵌装されている。ガイドリング(S1)及びパッキン(S2)の材質としては、耐熱特性が広く、摩擦特性に優れたポリテトラフルオロエチレン(PTFE)が好適に採用されるが、限定されることはなく、PTFEと同等の材質であれば他のものも使用することができる。   Furthermore, the Y-type valve of the present embodiment has a substantially cylindrical shape in the gap between the bonnet part (B) and the stem (ST) through which the bonnet part (B) is inserted, and the seat (B1s) and one end thereof are A sealing mechanism that abuts (that is, a guide ring (S1) and one or more annular packings (S2) that abut against the other end of the guide ring (S1)) are fitted. As the material of the guide ring (S1) and packing (S2), polytetrafluoroethylene (PTFE) having a wide heat resistance and excellent frictional properties is preferably adopted, but is not limited and is equivalent to PTFE. Any other material can be used.

前記パッキン(S2)はバネ(SP)によって前記座(B1s)の方向に付勢されている。ここで、図2を参照して詳述すると、ガイドリング(S1)及びパッキン(S2)は、ボンネット部(B)のボディ部(1)側の端部(B1)に形成された座(B1s)と、ボンネット部(B)の他端(B2)に差し込まれて固着された端末部材(L)との間にバネ(SP)がそれぞれワッシャ(W)を介して挟持されている。   The packing (S2) is urged in the direction of the seat (B1s) by a spring (SP). Here, in detail with reference to FIG. 2, the guide ring (S1) and the packing (S2) are seats (B1s) formed at the end (B1) of the bonnet part (B) on the body part (1) side. ) And a terminal member (L) fixedly inserted into the other end (B2) of the bonnet portion (B), springs (SP) are respectively sandwiched via washers (W).

前記ボンネット部(B)のボディ部(1)側の端部(B1)に形成された座(B1s)と当接するガイドリング(S1)の第1端部(S1a)には、円錐状の先細り部(T)が形成されており、該先細り部(T)の、前記ステム(ST)との摺動面(SL)に円弧状に凹部(R)が形成されている。   The first end (S1a) of the guide ring (S1) that comes into contact with the seat (B1s) formed at the end (B1) on the body (1) side of the bonnet (B) has a conical taper. A portion (T) is formed, and a concave portion (R) is formed in an arc shape on a sliding surface (SL) of the tapered portion (T) with the stem (ST).

このように、本実施形態によれば、先細り部(T)の、前記ステム(ST)との摺動面(SL)には円弧状に凹部(R)が形成されているので、ステム(ST)と封止機構との間の摺動により発生する磨耗粉を収集することができ、ひいては流体内への混入を防止することができる。図3を参照すると、ガイドリング(S1)は常時バネによって付勢されているので、円弧状に形成された凹部(R)が存在することにより、経時的に図3の(b)に示すように先細り部(T)が変形する傾向がある。それゆえ、結果的にステム(ST)と封止機構との間の摺動により発生する磨耗粉の流体への混入が防止される。   Thus, according to this embodiment, since the concave portion (R) is formed in an arc shape on the sliding surface (SL) of the tapered portion (T) with the stem (ST), the stem (ST ) And the sealing mechanism, wear powder generated by sliding between them can be collected, and as a result, mixing into the fluid can be prevented. Referring to FIG. 3, since the guide ring (S1) is always urged by a spring, the presence of a concave portion (R) formed in an arc shape causes the passage of time as shown in FIG. 3 (b). There is a tendency that the tapered portion (T) is deformed. Therefore, as a result, mixing of wear powder generated by sliding between the stem (ST) and the sealing mechanism into the fluid is prevented.

本発明のY型バルブは、配管に接続される管状部と該管状部に対して斜め方向に延設された枝管部を備えた略Y状を呈したボディ部と、
該ボディ部の枝管部に、その一端が接続された略円筒状の中空のボンネット部と、
該ボンネット部の他端に接続されたアクチュエータ部と、
前記ボンネット部を挿通し、前記アクチュエータ部によって一端が押し引き操作される棒状のステムと、
該ステムの他端に取り付けられ、前記ボディ部の管状部内に設けられた弁座に形成された開口部を完全に閉塞する大きさを有する弁体を備え、
前記弁体の振動防止手段が、前記ボディ部の枝管部の首部の長さが、開位置の弁体の移動方向の長さの過半長を超える大部分を収納する長さを有すること、前記弁体の外周囲に沿った接触幅が拡幅された拡幅部を有するウイングガイドを備えていること、及び前記ボディ部に、前記弁体の径方向周囲に沿って包囲部材が設けられていて、当該包囲部材が全開位置での前記弁体の下端近傍にまで包囲領域が存在していることのうちの1以上を備えたY型バルブであって、
前記ボンネット部の前記ボディ部側の端部に前記ステムを挿通する孔が穿設された座が設けられ、
前記ボンネット部と当該ボンネット部を挿通しているステムとの間の隙間に略円筒状を呈し前記座と一端が当接するガイドリングと、該ガイドリングの他端と当接する環状の1以上のパッキンが嵌装され、
前記パッキンがバネによって前記座の方向に付勢され、
前記ガイドリングの前記座と当接する第1端部に円錐状の先細り部が形成され、
該先細り部の、前記ステムとの摺動面に円弧状に凹部が形成されている。
それゆえ、Y型バルブのステムと封止機構(ガイドリング及びパッキン)との間の摺動により発生する磨耗粉を収集することができ、ひいては流体内への混入を防止することができる。
The Y-type valve of the present invention includes a tubular portion connected to a pipe and a body portion having a substantially Y shape including a branch pipe portion extending obliquely with respect to the tubular portion,
A substantially cylindrical hollow bonnet portion having one end connected to the branch pipe portion of the body portion;
An actuator part connected to the other end of the bonnet part;
A rod-shaped stem that is inserted through the bonnet portion and is pushed and pulled at one end by the actuator portion;
A valve body attached to the other end of the stem and having a size that completely closes an opening formed in a valve seat provided in the tubular portion of the body portion;
The valve body vibration preventing means has a length that accommodates most of the length of the neck portion of the branch pipe portion of the body portion that exceeds the majority of the length in the moving direction of the valve body at the open position; A wing guide having a widened portion in which a contact width along the outer periphery of the valve body is widened; and a surrounding member is provided on the body portion along a radial periphery of the valve body. The surrounding member is a Y-type valve provided with one or more of the surrounding region to the vicinity of the lower end of the valve body in the fully open position,
A seat having a hole through which the stem is inserted is provided at an end of the bonnet portion on the body portion side,
A guide ring having a substantially cylindrical shape in a gap between the bonnet portion and a stem inserted through the bonnet portion, the seat being in contact with one end, and one or more annular packings in contact with the other end of the guide ring Is fitted,
The packing is biased toward the seat by a spring;
A conical tapered portion is formed at the first end of the guide ring that contacts the seat;
A concave portion is formed in an arc shape on a sliding surface of the tapered portion with the stem.
Therefore, it is possible to collect the wear powder generated by the sliding between the stem of the Y-type valve and the sealing mechanism (guide ring and packing), and to prevent mixing into the fluid.

1 Y型バルブのボディ部
1b 枝管部
1n 首部
1op 開口部
1s 弁座
2 弁体
2S シート
AC アクチュエータ
B ボンネット部
B1、B2 ボンネット部の端部
C ケーシング
IN 入口
L 端末部材
P ピストン
PR ピストンリング
S1 ガイドリング
S2 パッキン
SL 摺動面
SP バネ
T 先細り部
X 詳細部
DESCRIPTION OF SYMBOLS 1 Body part 1b Y-branch part 1n Neck part 1op Opening part 1s Valve seat 2 Valve body 2S Seat AC Actuator B Bonnet part B1, B2 End part of bonnet part C Casing IN Inlet L Terminal member P Piston PR Piston ring S1 Guide ring S2 Packing SL Sliding surface SP Spring T Tapered part X Detailed part

Claims (3)

配管に接続される管状部と該管状部に対して斜め方向に延設された枝管部を備えた略Y状を呈したボディ部と、
該ボディ部の枝管部に、その一端が接続された略円筒状の中空のボンネット部と、
該ボンネット部の他端に接続されたアクチュエータ部と、
前記ボンネット部を挿通し、前記アクチュエータ部によって一端が押し引き操作される棒状のステムと、
該ステムの他端に取り付けられ、前記ボディ部の管状部内に設けられた弁座に形成された開口部を完全に閉塞する大きさを有する弁体を備え、
前記弁体の振動防止手段が、前記ボディ部の枝管部の首部の長さが、開位置の弁体の移動方向の長さの過半長を超える大部分を収納する長さを有すること、前記弁体の外周囲に沿った接触幅が拡幅された拡幅部を有するウイングガイドを備えていること、及び前記ボディ部に、前記弁体の径方向周囲に沿って包囲部材が設けられていて、当該包囲部材が全開位置での前記弁体の下端近傍にまで包囲領域が存在していることのうちの1以上を備えたY型バルブであって、
前記ボンネット部の前記ボディ部側の端部に前記ステムを挿通する孔が穿設された座が設けられ、
前記ボンネット部と当該ボンネット部を挿通しているステムとの間の隙間に略円筒状を呈し前記座と一端が当接するガイドリングと、該ガイドリングの他端と当接する環状の1以上のパッキンが嵌装され、
前記パッキンがバネによって前記座の方向に付勢され、
前記ガイドリングの前記座と当接する第1端部に円錐状の先細り部が形成され、
該先細り部の、前記ステムとの摺動面に円弧状に凹部が形成されている
ことを特徴とするY型バルブ。
A body portion having a substantially Y shape including a tubular portion connected to the pipe and a branch pipe portion extending obliquely with respect to the tubular portion;
A substantially cylindrical hollow bonnet portion having one end connected to the branch pipe portion of the body portion;
An actuator part connected to the other end of the bonnet part;
A rod-shaped stem that is inserted through the bonnet portion and is pushed and pulled at one end by the actuator portion;
A valve body attached to the other end of the stem and having a size that completely closes an opening formed in a valve seat provided in the tubular portion of the body portion;
The valve body vibration preventing means has a length that accommodates most of the length of the neck portion of the branch pipe portion of the body portion that exceeds the majority of the length in the moving direction of the valve body at the open position; A wing guide having a widened portion in which a contact width along the outer periphery of the valve body is widened; and a surrounding member is provided on the body portion along a radial periphery of the valve body. The surrounding member is a Y-type valve provided with one or more of the surrounding region to the vicinity of the lower end of the valve body in the fully open position,
A seat having a hole through which the stem is inserted is provided at an end of the bonnet portion on the body portion side,
A guide ring having a substantially cylindrical shape in a gap between the bonnet portion and a stem inserted through the bonnet portion, the seat being in contact with one end, and one or more annular packings in contact with the other end of the guide ring Is fitted,
The packing is biased toward the seat by a spring;
A conical tapered portion is formed at the first end of the guide ring that contacts the seat;
A Y-type valve, wherein a concave portion is formed in an arc shape on a sliding surface of the tapered portion with the stem.
前記座の幾何学的形状が円環状である請求項1に記載のY型バルブ。   The Y-shaped valve according to claim 1, wherein a geometric shape of the seat is an annular shape. 前記座の幾何学的形状が部分円錐状であり、前記ガイドリングの先細り部の外面部と密着する請求項1に記載のY型バルブ。   2. The Y-type valve according to claim 1, wherein a geometric shape of the seat is a partial conical shape and is in close contact with an outer surface portion of a tapered portion of the guide ring.
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