JPS62266271A - Valve rod for needle valve - Google Patents
Valve rod for needle valveInfo
- Publication number
- JPS62266271A JPS62266271A JP10694786A JP10694786A JPS62266271A JP S62266271 A JPS62266271 A JP S62266271A JP 10694786 A JP10694786 A JP 10694786A JP 10694786 A JP10694786 A JP 10694786A JP S62266271 A JPS62266271 A JP S62266271A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- needle
- valve stem
- needle valve
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 abstract description 14
- 210000005036 nerve Anatomy 0.000 abstract 1
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はニードルバルブの弁棒の改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a valve stem of a needle valve.
（従来の技術）
第３図〜第４図に示すように、従来のニードルバルブの
弁棒（１０１）は、バルブ弁箱（１０２）の流体通路に
形成した弁座（１０３）に当接してこの通路を封鎖する
ようにしたニードル弁体（１０４）と、バルブ弁箱（１
０２）に螺刻した弁箱ネジ部（１０５）に弁棒ネジ部（
１０６）を螺合して上記ニードル弁体（１０４）を作動
させる弁棒本体（１０７）とが一体的に形成されていた
。そして、弁棒本体（１０’？）を回転させてニードル
弁体（１０４）を弁座（１０３）に当接させ、流体の流
れを阻止していた。(Prior Art) As shown in FIGS. 3 and 4, a valve stem (101) of a conventional needle valve is in contact with a valve seat (103) formed in a fluid passage of a valve body (102). A needle valve body (104) and a valve box (104) are arranged to close this passage.
Attach the valve stem threaded part (105) to the threaded part (105) of the valve body (
106) and a valve stem body (107) which is screwed together to operate the needle valve body (104) were integrally formed. Then, the valve stem body (10'?) was rotated to bring the needle valve body (104) into contact with the valve seat (103), thereby blocking the flow of fluid.
（発明が解決しようとする問題）
ところが、上記従来のようにニードル弁体（１０４）と
弁棒本体（１０７）とが一体となった弁棒（１０１）の
構造では、弁箱ネジ部（１０５）と弁棒ネジ部（１０６
）との螺合誤差が弁棒（１０１）全体の芯振れとなって
現れ、このことが、ニードル弁体（Ｉ Ｑ ４）の弁座
（１０３）への当たりに影響する。すなわち、弁座（１
０３）へのニードル弁体（１０４）の当たりが均一にな
らず、増し締めした場合にはニードル弁体（１０４）に
ネジ状の疵がつき、洩れの原因となっていた。(Problem to be Solved by the Invention) However, in the structure of the valve stem (101) in which the needle valve body (104) and the valve stem body (107) are integrated as in the above-described conventional structure, the threaded portion of the valve body (105) ) and valve stem threaded part (106
) appears as a center runout of the entire valve stem (101), which affects the contact of the needle valve element (I Q 4) with the valve seat (103). In other words, the valve seat (1
The contact of the needle valve element (104) against the needle valve element (104) was not uniform, and when the needle valve element (104) was tightened further, a screw-like flaw was formed on the needle valve element (104), causing leakage.
本発明は上記のような点に鑑みて種々研究の結果開発さ
れたものであり、その目的とする処は、上記従来の欠点
を解消すると共に、芯振れに余り神経を使わずに小トル
クで簡単に流体通路を封鎖できるニードルバルブの弁棒
を提供することにある。The present invention was developed as a result of various studies in view of the above points, and its purpose is to eliminate the above-mentioned conventional drawbacks, and also to provide a system with small torque without having to worry too much about center runout. To provide a valve stem of a needle valve that can easily close off a fluid passage.
（問題点を解決するための手段）
そこで、本発明は上記目的を有効に達するために、次の
ような構成にしである。すなわち、溝を介してニードル
部とガイド部とを一体的に形成したニードル弁体と、弁
棒ネジ部を外周に螺刻し、該ニードル弁体のガイド部を
遊嵌する孔を先端中央部に有すると共に、該孔の端部外
周に上記ニードル弁体の溝に折曲係止できる鍔を形成し
た弁棒本体とからなる構成にしである。(Means for Solving the Problems) Therefore, in order to effectively achieve the above object, the present invention has the following configuration. That is, a needle valve body has a needle part and a guide part integrally formed through a groove, a threaded part of the valve stem is threaded on the outer periphery, and a hole into which the guide part of the needle valve body loosely fits is formed in the center of the tip. and a valve stem body having a flange formed on the outer periphery of the end of the hole that can be bent and locked into the groove of the needle valve body.
（作用）
上記構成により、弁棒本体の孔にニードル弁体のガイド
部を遊嵌すると共に、弁棒本体の鍔を折曲してニードル
弁体の溝に係止し、弁棒を組立てる。この弁棒をニード
ルバルブの弁箱に螺着する。(Function) With the above configuration, the guide portion of the needle valve body is loosely fitted into the hole of the valve stem body, and the collar of the valve stem body is bent and engaged with the groove of the needle valve body, thereby assembling the valve stem. Screw this valve stem into the valve body of the needle valve.
そして弁箱の流体通路を封鎖する時は、弁棒本体を回転
させて流体通路の弁座側にニードル部を移動させる。ニ
ードル部が弁座に当接し、流体通路を確実に封鎖するた
めに、弁棒本体をさらに回転させて増し締めを行った場
合、弁棒本体とニードル弁体とが別体であり、かつ該ニ
ードル弁体が弁棒本体に遊嵌されているため、弁座と当
接したニードル弁体は回転することなく、弁棒本体によ
って弁座側に押圧される。When closing the fluid passage in the valve box, the valve stem body is rotated to move the needle portion toward the valve seat side of the fluid passage. If the valve stem body is further rotated and retightened in order for the needle part to contact the valve seat and reliably close the fluid passage, the valve stem body and needle valve body are separate bodies, and Since the needle valve body is loosely fitted to the valve stem body, the needle valve body in contact with the valve seat does not rotate, but is pressed toward the valve seat by the valve stem body.
（実施例）
以下、本発明の実施例を第１図〜第２図に基づいて説明
する。(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2.
図において、（１）は本発明に係る一実施例のニードル
バルブ（Ａ）の弁棒であって、該弁棒（１）は別体であ
るニードル弁体（２）と弁棒本体（３）とから構成され
ている。具体的に説明すると、弁体（１）を構成する上
記ニードル弁体（２）は、円錐形状のニードル部（４）
と円柱状のガイド部（５）とからなり、該ニードル部（
４）は、弁箱（Ｂ）の流体通路（Ｃ）に形成した弁座（
Ｄ）に当接して該通路（Ｃ）を封鎖する部分である。そ
して該ニードル部（４）とガイド部（５）とは、該ガイ
ド部（５）の一端に形成した溝（６）を介して一体的に
形成されている。この溝（６）の幅（ａ）は０．５ ｍ
で、深さくｂ）は０．２〜０．３鶴である。In the figure, (1) is a valve stem of a needle valve (A) according to an embodiment of the present invention, and the valve stem (1) is comprised of a separate needle valve body (2) and a valve stem body (3). ). Specifically, the needle valve body (2) constituting the valve body (1) has a conical needle portion (4).
and a cylindrical guide part (5), and the needle part (
4) is a valve seat (
This is the part that comes into contact with D) and closes off the passage (C). The needle portion (4) and the guide portion (5) are integrally formed through a groove (6) formed at one end of the guide portion (5). The width (a) of this groove (6) is 0.5 m
The depth b) is 0.2 to 0.3 depth.
また、弁棒本体（３）は、弁箱（Ｂ）の弁棒（１）取付
は部に螺刻した弁箱ネジ部（Ｅ）に螺合できるように、
先端近傍外周部に弁棒ネジ部（７）を螺合しである。ま
た該弁棒本体（３）の先端中央部には、軸芯に沿って上
記ニードル弁体（２）のガイド部（５）を遊嵌できる孔
（８）が穿設されている。該孔（８）の深さはガイド部
（５）の長さより長く形成しである。更に該孔（８）の
開口端外周には、鍔（９）が形成しである。この鍔（９
）の高さは０．２〜０．３ ｍ−１厚さは０．１５ｍで
あり、孔（９）側に折曲できるようにしである。In addition, the valve stem body (3) is designed so that it can be screwed into the valve body thread (E) that is threaded on the valve body (B) where the valve stem (1) is attached.
A valve stem threaded portion (7) is screwed onto the outer periphery near the tip. Further, a hole (8) into which the guide portion (5) of the needle valve body (2) can be loosely fitted is bored in the center of the tip of the valve stem body (3) along the axis. The depth of the hole (8) is longer than the length of the guide portion (5). Further, a flange (9) is formed on the outer periphery of the opening end of the hole (8). This tsuba (9
) has a height of 0.2 to 0.3 m-1 and a thickness of 0.15 m, and is designed so that it can be bent toward the hole (9).
叙述の弁棒本体（３）に前記ニードル弁体（２）を取付
けて、弁棒（１）を形成する。すなわち、ニードル弁体
（２）のガイド部（５）を弁棒本体（３）の孔（９）に
遊嵌すると共に、該弁棒本体（３）の鍔（９）を折曲し
てニードル弁体（２）の溝（６）に係止する。このとき
、該溝（６）に係止された鍔（９）の溝（６）部分での
高さは０．３ 鶴以下であり、溝（６）の幅（ａ）は０
゜５ ｍｍであるため、弁棒本体（３）に取付られたニ
ードル弁体（２）は前後に多少動かすことができる。勿
論、弁棒本体（３）はニードル弁体（２）に対して自由
に回転させることができる。また、弁棒本体（３）にニ
ードル弁体（２）を遊嵌するようにして嵌合させである
ので、弁箱（Ｂ）に弁棒本体（３）を螺合したときに生
じる芯振れも、この弁棒本体（３）とニードル弁体（２
）とのいわゆる“遊び゛によって、芯振れ誤差は吸収さ
れてしまう。The needle valve body (2) is attached to the valve stem body (3) described above to form a valve stem (1). That is, the guide portion (5) of the needle valve body (2) is loosely fitted into the hole (9) of the valve stem body (3), and the collar (9) of the valve stem body (3) is bent to remove the needle. It locks into the groove (6) of the valve body (2). At this time, the height at the groove (6) portion of the tsuba (9) locked in the groove (6) is 0.3 or less, and the width (a) of the groove (6) is 0.
5 mm, the needle valve body (2) attached to the valve stem body (3) can be moved slightly back and forth. Of course, the valve stem body (3) can be freely rotated relative to the needle valve body (2). In addition, since the needle valve body (2) is loosely fitted to the valve stem body (3), there is no center runout that occurs when the valve stem body (3) is screwed into the valve body (B). Also, this valve stem body (3) and needle valve body (2)
) The center runout error is absorbed by the so-called “play” between the two.
このようにしてなる弁棒（１）にあっては、ニードルバ
ルブ（Ａ）の弁箱（Ｂ）の流体通路（Ｃ）を封鎖する時
は、該弁棒（１）の弁棒本体（３）を回転させ、流体通
路（Ｃ）の弁座（Ｄ）側にニードル部（４）を移動させ
てニードル部（４）を弁座（Ｄ）に当接させる。このニ
ードル部（４）が弁座（Ｄ）に当接した時、弁棒本体（
３）を回転させているのにかかわらずニードル部（４）
は回転せず、増し締めのためさらに弁棒本体（３）を回
転させれば、該弁棒本体（３）の押圧により、ニードル
部（４）は静止した状態で弁座（Ｄ）に強く当接される
。したがって増し締めした時、弁座（Ｄ）によってニー
ドル部（４）にネジ状の疵がつくこともなく、流体通路
（Ｃ）を封鎖した時、流体が洩れるといったこともない
。In the valve stem (1) formed in this way, when closing the fluid passage (C) of the valve body (B) of the needle valve (A), the valve stem body (3 ) to move the needle part (4) to the valve seat (D) side of the fluid passageway (C) and bring the needle part (4) into contact with the valve seat (D). When this needle part (4) comes into contact with the valve seat (D), the valve stem body (
Needle part (4) regardless of whether 3) is rotated
does not rotate, and when the valve stem body (3) is further rotated for additional tightening, the needle part (4) remains stationary and firmly presses against the valve seat (D) due to the pressure of the valve stem body (3). be touched. Therefore, when the valve seat (D) is retightened, no thread-like flaws are formed on the needle portion (4), and when the fluid passage (C) is closed, no fluid leaks.
尚、ニードルバルブの弁体（２）と弁座（Ｄ）の材質を
換えることも可能である。例えば、黄銅製ニードルバル
ブにおいて黄銅製弁棒にステンレス製弁体を取りつける
ことにより、弁座（Ｄ）との密着度が良くなり、また必
要に応じテフロン等、樹脂製弁体の取付も可能である。It is also possible to change the materials of the valve body (2) and valve seat (D) of the needle valve. For example, by attaching a stainless steel valve body to the brass valve stem of a brass needle valve, the degree of close contact with the valve seat (D) is improved, and if necessary, it is also possible to attach a valve body made of resin such as Teflon. be.
（発明の効果）
以上、叙述の説明でも明らかなように、本発明は、弁棒
を別体のニードル弁体と弁棒本体とによって構成し、該
ニードル弁体を弁棒本体に回転自在に取り付けであるの
で、弁棒本体の弁棒ネジ部と、弁箱の弁箱ネジ部との螺
合状態によって、弁棒本体に芯振れを生じたとしても、
ニードル弁体のニードル部が弁座と当接した時は、弁棒
本体の回転にかかわらず、静止した状態で弁座に当接さ
せることができるので、流体の洩れを生じるといったこ
とがない。したがって、芯振れに余り神経を使わずに、
小トルクで簡単に流体通路を封鎖することができる。(Effects of the Invention) As is clear from the above description, the present invention comprises a valve stem composed of a separate needle valve body and a valve stem body, and the needle valve body is rotatably attached to the valve stem body. Since it is an installation, even if center runout occurs in the valve stem body due to the threaded state of the valve stem threaded part of the valve stem body and the valve body threaded part of the valve body,
When the needle portion of the needle valve body comes into contact with the valve seat, it can be brought into contact with the valve seat in a stationary state regardless of the rotation of the valve stem body, so no fluid leakage occurs. Therefore, without worrying too much about the center runout,
Fluid passages can be easily closed with small torque.
第１図は本発明に係る一実施例の分解正面図、第２図は
本発明に係る弁棒を組み込んだニードルバルブの要部断
面図、第３図は従来のニードルバルブ用弁棒の正面図、
第４図は従来の弁棒を組み込んだニードルバルブの要部
断面図である。
（１）・・・弁棒、（２）・・・ニードル弁体、（３）
・・・弁棒本体、（４）・・・ニードル部、（５） ・
・・ガイド部、（６）・・・溝、（８）・・・孔、（９
）・・・鍔。
第１図
第３図
第４図
１（Ｊ４Fig. 1 is an exploded front view of one embodiment of the present invention, Fig. 2 is a sectional view of essential parts of a needle valve incorporating the valve stem of the present invention, and Fig. 3 is a front view of a conventional valve stem for a needle valve. figure,
FIG. 4 is a sectional view of a main part of a needle valve incorporating a conventional valve stem. (1)... Valve stem, (2)... Needle valve body, (3)
... Valve stem body, (4) ... Needle part, (5) ・
... Guide part, (6) ... Groove, (8) ... Hole, (9
)...Tsuba. Figure 1 Figure 3 Figure 4 Figure 1 (J4
Claims (1)
）とを一体的に形成したニードル弁体（２）と、弁棒ネ
ジ部（７）を外周に螺刻し、該弁体（２）のガイド部（
５）を遊嵌する孔（８）を先端中央部に有すると共に、
該孔（８）の端部外周に上記ニードル弁体（２）の溝（
６）に折曲係止できる鍔（９）を形成した弁棒本体（３
）とからなることを特徴とするニードルバルブの弁棒1. Needle part (4) and guide part (5) via groove (6)
) and a valve stem threaded portion (7) are threaded on the outer periphery, and the guide portion (
5) has a hole (8) in the center of the tip for loosely fitting it, and
A groove (
The valve stem body (3) has a flange (9) that can be bent and locked on the valve stem body (3).
) A valve stem of a needle valve characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694786A JPS62266271A (en) | 1986-05-09 | 1986-05-09 | Valve rod for needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10694786A JPS62266271A (en) | 1986-05-09 | 1986-05-09 | Valve rod for needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62266271A true JPS62266271A (en) | 1987-11-19 |
Family
ID=14446566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10694786A Pending JPS62266271A (en) | 1986-05-09 | 1986-05-09 | Valve rod for needle valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62266271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002331271A (en) * | 2001-05-09 | 2002-11-19 | Hozan Kk | Blower |
| WO2006057108A1 (en) * | 2004-11-25 | 2006-06-01 | Surpass Industry Co., Ltd. | Flow control valve |
-
1986
- 1986-05-09 JP JP10694786A patent/JPS62266271A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002331271A (en) * | 2001-05-09 | 2002-11-19 | Hozan Kk | Blower |
| WO2006057108A1 (en) * | 2004-11-25 | 2006-06-01 | Surpass Industry Co., Ltd. | Flow control valve |
| US7677530B2 (en) * | 2004-11-25 | 2010-03-16 | Surpass Industry Co., Ltd. | Flow rate regulation valve |
| DE112005002909B4 (en) | 2004-11-25 | 2024-03-14 | Surpass Industry Co., Ltd. | Flow control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USRE22926E (en) | Fastening device | |
| JP3205281U (en) | Manual flow control valve | |
| US3974855A (en) | Check valve having self energizing seal | |
| KR930007769B1 (en) | Connection device for measuring instruments | |
| US4164343A (en) | Eccentric ball type valve | |
| JPS62266271A (en) | Valve rod for needle valve | |
| US2346938A (en) | Valve | |
| US4068822A (en) | Ball valve | |
| JPH0650318A (en) | Device for assembly by clamp of elastic compressive part | |
| US3126193A (en) | atherton | |
| JPS6344610Y2 (en) | ||
| FR2454032A1 (en) | PRECISION BUTTERFLY VALVE | |
| US5324000A (en) | Non-rotating needle valve | |
| JP3444436B2 (en) | Stopper mechanism of gate valve with rotary sliding gland structure | |
| JPH08326112A (en) | Spout connection device of water faucet of the like | |
| JPS594222Y2 (en) | bulb daffodil | |
| DE2916926A1 (en) | Butterfly valve with metal seat ring and flap - has taper face on flap disc bearing against arched face on seat ring | |
| JPS628690Y2 (en) | ||
| JP2808924B2 (en) | Gas cooking equipment | |
| KR930008648Y1 (en) | Valve structure | |
| GB2215819A (en) | Valve housing | |
| JPH04504464A (en) | Shutoff valve with sealing device | |
| SU1093931A1 (en) | Leak probe for checking fluid-tightness | |
| JPH0449423Y2 (en) | ||
| US20070034821A1 (en) | Adjustable sealing means |