JPH02255906A - Diaphragm type liquid pressure control valve - Google Patents
Diaphragm type liquid pressure control valveInfo
- Publication number
- JPH02255906A JPH02255906A JP2923789A JP2923789A JPH02255906A JP H02255906 A JPH02255906 A JP H02255906A JP 2923789 A JP2923789 A JP 2923789A JP 2923789 A JP2923789 A JP 2923789A JP H02255906 A JPH02255906 A JP H02255906A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- diaphragm
- chamber
- pressure
- valve body
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000006698 induction Effects 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000001052 transient effect Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013017 mechanical damping Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ポンプなどで送液する液体回路に組込んで使
用するダイアフラム形液体圧力調整弁の構成に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a diaphragm-type liquid pressure regulating valve that is used by being incorporated into a liquid circuit for feeding liquid with a pump or the like.
まず、第５図に頭記したダイアフラム形液体圧力調整弁
の従来構造を示す０図において、ｌはその内部に一次側
弁室１ｂに通じる一次側弁室１ｂ二次圧力出口１ｃに通
じる二次側弁室１ｄ、および弁座１ｅを形成した弁箱、
２は弁蓋、３は弁座１ｅに対向して弁箱１に組込んだ弁
体、４は一次側弁室１ｂを仕切る受圧用ダイアフラム、
５はダイアフラム４に背圧を加える付勢ばね、６は付勢
ばね５の調節ハンドルである。ここで、受圧用ダイアフ
ラム４はゴム製の膜体でその周縁が弁箱１と弁蓋２との
間に挟持されており、ダイアフラム４の中央には弁体３
の弁棒３ａが直結され、また、その背後には圧縮ばねと
しての付勢ばね５がダイアフラム側のばね受け７と調節
ハンドル側のばね受け８との間に介装されている。First, in Fig. 0 showing the conventional structure of the diaphragm type liquid pressure regulating valve shown in Fig. 5, l indicates a primary valve chamber 1b which communicates with the primary valve chamber 1b and a secondary valve which communicates with the secondary pressure outlet 1c. A valve box forming a side valve chamber 1d and a valve seat 1e,
2 is a valve lid, 3 is a valve body installed in the valve box 1 facing the valve seat 1e, 4 is a pressure receiving diaphragm that partitions the primary valve chamber 1b,
5 is a biasing spring that applies back pressure to the diaphragm 4, and 6 is an adjustment handle for the biasing spring 5. Here, the pressure-receiving diaphragm 4 is a rubber membrane whose periphery is sandwiched between the valve box 1 and the valve cover 2, and the center of the diaphragm 4 has a valve body 3.
The valve stem 3a is directly connected to the valve stem 3a, and behind it, an urging spring 5 as a compression spring is interposed between a spring receiver 7 on the diaphragm side and a spring receiver 8 on the adjustment handle side.
かかるダイアフラム式液体圧力調整弁の動作は［知であ
り、ポンプ９で送液された液体は矢印のように一次側弁
室１ａより一次側弁室１ｂに流入し、弁座１ｅと弁体３
との間のすき間を通過する過程で所定圧力に減圧調整さ
れ、二次側弁室１ｄ、二次圧力出口１ｃを経て流出する
。またこの場合に液体の一次圧力はダイアフラム４を介
して付勢ばね５と圧力バランスし、弁体３と弁座１ｅと
の間のすき間を調整している。ここで、液体の一次圧力
が上昇すると、付勢ばね５に抗しダイアフラム４を押し
下げて弁体３と弁座１ｅとの間のすき間が増大し、二次
側への通過流量が増加する。また−次圧力が低下した場
合には逆に付勢ばね５のばね力によりダイアフラム４が
背後から押し上げられ、弁体３と弁座１ｅとの間をすき
間を縮小して流量を絞る。The operation of such a diaphragm type liquid pressure regulating valve is as follows: The liquid pumped by the pump 9 flows from the primary valve chamber 1a to the primary valve chamber 1b as shown by the arrow, and flows between the valve seat 1e and the valve body 3.
The pressure is reduced to a predetermined pressure during the process of passing through the gap between the two, and flows out through the secondary valve chamber 1d and the secondary pressure outlet 1c. Further, in this case, the primary pressure of the liquid is pressure balanced with the biasing spring 5 via the diaphragm 4, and the gap between the valve body 3 and the valve seat 1e is adjusted. Here, when the primary pressure of the liquid increases, the diaphragm 4 is pushed down against the biasing spring 5, the gap between the valve body 3 and the valve seat 1e increases, and the flow rate passing to the secondary side increases. On the other hand, when the next pressure decreases, the diaphragm 4 is pushed up from behind by the spring force of the biasing spring 5, reducing the gap between the valve body 3 and the valve seat 1e and reducing the flow rate.
これにより一次圧力の変動に関係なく二次圧力が一定に
保たれる。This keeps the secondary pressure constant regardless of changes in the primary pressure.
ところで、上記した従来の弁構造では次記のような問題
点がある。すなわち、
（１）−次圧力の急激に上１昇変動１例えば水撃作泪に
より、弁箱１の一次側弁室１ａに過渡的な過大圧力が加
わると、ゴム製のダイアフラム４がその圧力に耐え切れ
ずに破れたりして損傷を受けることがある。However, the conventional valve structure described above has the following problems. That is, (1) - When a transient overpressure is applied to the primary side valve chamber 1a of the valve body 1 due to water hammer, for example, the rubber diaphragm 4 responds to the pressure. It may not be able to withstand the damage and may tear or become damaged.
（２）弁機構の減衰係数が小さく、急激な圧力変動が加
わると自動振動が誘発し易い。(2) The damping coefficient of the valve mechanism is small, and automatic vibration is likely to be induced when sudden pressure fluctuations are applied.
（３）弁体３はその弁棒３ａの一端が可撓性のダイアフ
ラム４に直結されているため、その支持ガイド機能が不
安定であって特に横方向への振動が誘発され易い。(3) Since one end of the valve stem 3a of the valve body 3 is directly connected to the flexible diaphragm 4, its supporting and guiding function is unstable and vibrations, especially in the lateral direction, are easily induced.
本発明は上記の点にかんがみ成されたものであり、弁箱
内に僅かな部品を追加設置することにより前記した問題
が解消し、水撃などの過大圧に対する耐久強度、信頼性
の改善が図れるようにしたダイアフラム形液体圧力調整
弁を提供することを目的とする。The present invention has been made in consideration of the above points, and by installing a few additional parts in the valve box, the above-mentioned problems are solved, and durability strength and reliability against excessive pressure such as water hammer are improved. It is an object of the present invention to provide a diaphragm type liquid pressure regulating valve that can achieve the
（課題を解決するための手段〕
上記課題を解決するために、本発明のダイアフラム形液
体圧力調整弁においては、一次側弁室内に弁体支持ガイ
ドを兼ねた仕切り隔壁を設け、かつ該仕切り隔壁に***
を開口して隔壁と受圧用ダイアフラムとの間にダンパ室
を形成するものとする。(Means for Solving the Problems) In order to solve the above problems, in the diaphragm type liquid pressure regulating valve of the present invention, a partition wall that also serves as a valve body support guide is provided in the primary valve chamber, and the partition wall A small hole is opened in the diaphragm to form a damper chamber between the partition wall and the pressure receiving diaphragm.
亥た、弁体の自励振動誘発の抑止をより確実にするため
に、前記の構成で仕切り隔壁の弁体支持ガイド部に対向
して、該ガイド都合貫通する弁棒の軸上に弁体の過剰な
移動ストロークを規制するストッパを設けことができる
。In addition, in order to more reliably suppress induction of self-excited vibration of the valve body, in the above configuration, the valve body is placed on the axis of the valve stem that passes through the valve body support guide portion of the partition wall. A stopper can be provided to restrict an excessive movement stroke.
さらに、前記課題の別な解決手段として、弁箱の一次圧
力入口にオリフィスを設け、一次側圧力室をダンパ室と
して機能させることもできる。Furthermore, as another solution to the above-mentioned problem, an orifice can be provided at the primary pressure inlet of the valve box so that the primary pressure chamber can function as a damper chamber.
上記のように一次側弁室でダイアフラムとの間に形成さ
れたダンパ室は、水撃などによる一次圧力の過渡的な圧
力変動分を吸収し、過大な動圧がそのまま受圧用ダイア
フラムに直接加わるのを阻止するように働くとともに、
ダンパ室の流体的ダンパ作用により弁機構の減衰係数を
大きくする。As mentioned above, the damper chamber formed between the primary valve chamber and the diaphragm absorbs transient pressure fluctuations in the primary pressure caused by water hammer, etc., and excessive dynamic pressure is directly applied to the pressure receiving diaphragm. In addition to working to prevent
The damping coefficient of the valve mechanism is increased by the fluid damping action of the damper chamber.
これにより前述した課題のうち、過大圧力の印加による
ダイアフラムの損傷、並びに自励振動の発生が防止でき
る。なお、このダンパ作用の能力は隔壁に開口した***
の穴径、数、およびダンパ室の容積で決まる。This makes it possible to prevent damage to the diaphragm and generation of self-excited vibrations due to the application of excessive pressure, which are among the problems described above. Note that the ability of this damper action is determined by the diameter and number of small holes opened in the partition wall, and the volume of the damper chamber.
また、前記ダンパ室を画成する仕切り隔壁は、弁体の支
持ガイドを兼ねていて弁体を安定支持し、弁体の横方向
の振動発生を抑えるように働く。なお、弁体の弁棒と弁
棒を包囲する隔壁側の支持ガイド部との間をＱ ＩＪソ
ングどでシールしておくことにより、先記した流体的ダ
ンパ作用に０リングによる機械的ダンパ作用が加わって
減衰係数が増大し、自助振動をより効果的に抑制できる
。Further, the partition wall defining the damper chamber also serves as a supporting guide for the valve body, stably supporting the valve body, and working to suppress generation of lateral vibration of the valve body. In addition, by sealing between the valve stem of the valve body and the supporting guide part on the bulkhead side that surrounds the valve stem with a Q IJ song, the mechanical damping effect of the O-ring can be added to the fluid damping effect described above. is added, the damping coefficient increases, and self-help vibration can be suppressed more effectively.
さらに、仕切り隔壁の弁体支持ガイド部に対向して弁棒
の軸上に設けたストッパは、弁体の過剰な移動ストロー
クを規制するように働く、これにより、水撃作用などで
過渡的に過大圧が加わった際に、ダイヤフラムに無理な
外力が加わって損傷するのを防ぐとともに、弁体が大き
く振れて自助振動に移行するのを効果的に抑制できる。Furthermore, a stopper provided on the shaft of the valve stem opposite to the valve body support guide part of the partition partition works to restrict excessive movement stroke of the valve body, thereby preventing transient movement caused by water hammer, etc. When excessive pressure is applied, it is possible to prevent the diaphragm from being damaged by excessive external force, and to effectively suppress the valve body from swinging significantly and shifting to self-support vibration.
また、一次側弁室内に仕切隔壁を設ける代わりに、弁箱
の一次圧力入口にオリフィスを設けた構成でも一次側弁
室全体がダンパ室として機能するようになり、受圧用ダ
イアフラムに対するダンパ作用を与えて水撃作用による
過大圧力の印加、並びに自励振動の発生を防止できる。In addition, even in a configuration in which an orifice is provided at the primary pressure inlet of the valve box instead of providing a partition wall in the primary valve chamber, the entire primary valve chamber functions as a damper chamber, providing a damping effect to the pressure receiving diaphragm. This can prevent the application of excessive pressure due to water hammer and the occurrence of self-excited vibration.
第１図、第２図、第３図、第４図はそれぞれ異なる本発
明実施例の構成図であり、第５図に対応する同一部材に
は同じ符号が付しである。1, 2, 3, and 4 are configuration diagrams of different embodiments of the present invention, and the same members corresponding to FIG. 5 are given the same reference numerals.
まず第１図の実施例において、弁箱１の一次側弁室１ｂ
内には一次圧力流入側とダイアフラム４との間に符号１
０で示すダンパ室が画成されている。First, in the embodiment shown in FIG. 1, the primary valve chamber 1b of the valve box 1 is
There is a mark 1 between the primary pressure inflow side and the diaphragm 4.
A damper chamber indicated by 0 is defined.
このダンパ室１０は、全体として壷形を成す仕切り隔壁
１１に一次側弁室１ｂより液体圧力を導入する***１２
を開口して構成されたもので、かつ仕切り隔壁１１は同
時に弁体３の支持ガイドも兼ねるように、そのセンタの
弁棒貫通部分には弁棒３ａを摺動式に軸支する円筒状の
弁体支持ガイド部１３が形成されている。またこの支持
ガイド部１３に対向して弁棒３ａの周面にはＯＩＪソン
グ４を装着して両者間をシールしている。なお、１５は
仕切り隔壁１１を弁箱１に固定するボルトである。This damper chamber 10 has a small hole 12 through which liquid pressure is introduced from the primary valve chamber 1b into a partition wall 11 which has a pot shape as a whole.
The partition wall 11 has a cylindrical shaft that slidably supports the valve shaft 3a in the central portion through which the valve shaft passes, so that the partition wall 11 also serves as a support guide for the valve body 3. A valve body support guide portion 13 is formed. Further, an OIJ song 4 is attached to the circumferential surface of the valve stem 3a facing the support guide portion 13 to seal the gap between the two. Note that 15 is a bolt that fixes the partition wall 11 to the valve box 1.
上記構成により、弁箱１の一次側弁室１ｂに流入した液
体の一次圧力はダンパ室１０を介してダイアフラム４に
加わる。一方、弁体３の弁棒３ａは仕切り隔壁１１の支
持ガイド部１３に軸支されてスライド移動する。したが
って、液体の一次圧力が水撃作用などにより過渡的に急
激増加した場合でも、その圧力変動はダンパ室１０によ
り吸収されて過大な動圧が瞬時に直接ダイアフラム４に
加わることがなく、これによりダイアフラム４の損傷発
生が防げる。また、ダンパ室１０による流体的なダンパ
作用、およびＯリング１４と支持ガイド部１３との摺動
による機械的ダンパ作用が加わるので弁機構の減衰係数
が増大しく第４図と比べて減衰係数は１０倍以上に増加
する）、圧力変動に伴う自動振動の誘発が良好に抑制さ
れる。さらに、弁体３の弁棒３ａは仕切り隔壁１１の支
持ガイド部１３に支えられていて特に横方向の動きが拘
束されるので、これにより弁体３のガイド機能が安定し
て横方向の振動誘発が抑制される。With the above configuration, the primary pressure of the liquid flowing into the primary valve chamber 1b of the valve box 1 is applied to the diaphragm 4 via the damper chamber 10. On the other hand, the valve stem 3a of the valve body 3 is pivotally supported by the support guide portion 13 of the partition wall 11 and slides. Therefore, even if the primary pressure of the liquid increases transiently and rapidly due to water hammer, etc., the pressure fluctuation is absorbed by the damper chamber 10, and excessive dynamic pressure is not instantaneously applied directly to the diaphragm 4. Damage to the diaphragm 4 can be prevented. Furthermore, since a fluid damper action by the damper chamber 10 and a mechanical damper action by the sliding between the O-ring 14 and the support guide part 13 are added, the damping coefficient of the valve mechanism increases, and the damping coefficient is lower than that in FIG. 10 times or more), the induction of automatic vibrations due to pressure fluctuations is well suppressed. Furthermore, the valve stem 3a of the valve body 3 is supported by the support guide portion 13 of the partition wall 11, and its movement in the lateral direction is particularly restrained, so that the guiding function of the valve body 3 is stabilized and vibrations in the lateral direction are restrained. Induction is suppressed.
第２図は第１図に示した実施例の応用例であり、特にダ
ンパ室ｌＯの容積を小さく設定する場合に好適な実施例
を示す。すなわち、第１図の構造ではダンパ室１０の容
積を縮小すると、隔壁１１の底面とダイアフラム４との
間の間隔が狭まって支持ガイド部１３の寸法が殆ど取れ
なくなる。これに対して第２図のように支持ガイド部１
３を隔壁からダンパ室１０の外側へ張り出すように構成
すれば、ダンパ室１０の容積を小とした場合でも支持ガ
イド部１３の軸長寸法を十分確保することができる。な
お、第２図では支持ガイド部１３の内周面に摩擦係数が
小さいテフロンライナ１３ａが被着されている。FIG. 2 shows an example of application of the embodiment shown in FIG. 1, and shows an embodiment particularly suitable for setting the volume of the damper chamber IO to be small. That is, in the structure shown in FIG. 1, when the volume of the damper chamber 10 is reduced, the distance between the bottom surface of the partition wall 11 and the diaphragm 4 is narrowed, and the size of the support guide portion 13 can hardly be secured. On the other hand, as shown in FIG.
3 so as to protrude from the partition wall to the outside of the damper chamber 10, it is possible to ensure a sufficient axial length of the support guide portion 13 even when the volume of the damper chamber 10 is reduced. In addition, in FIG. 2, a Teflon liner 13a having a small coefficient of friction is adhered to the inner circumferential surface of the support guide portion 13.
次に前記した実施例をさらに改良した実施例を第３図に
示す、この実施例では、仕切り隔壁１１の弁体支持ガイ
ド部１３の端縁に対向して弁棒３ａの軸上には所定の弁
体移動ストロークｌを隔ててストッパ１６が設けである
。このストッパ１６は弁体３ａの軸上に形成した径大段
差部として成り、かつ支持ガイド部１３の端面に突き当
たった際の衝撃を緩和するために、ストッパ１６の端面
にはふっ素樹脂型などのスペーサ１７が装着されている
。Next, FIG. 3 shows an embodiment that is a further improvement of the above-described embodiment. A stopper 16 is provided at a distance of a valve body movement stroke l. This stopper 16 is formed as a large-diameter stepped portion formed on the axis of the valve body 3a, and in order to reduce the impact when it hits the end face of the support guide part 13, the end face of the stopper 16 is made of fluororesin mold or the like. A spacer 17 is attached.
このように弁体３ａの軸上にストッパ１６を設けて固定
側の支持ガイド部１３との間で弁体３の移動ストローク
を規制することにより、水撃作用などによる過渡的な圧
力が加わった際にも、弁体３の過剰な移動が阻止されこ
とになる。これにより、ダイヤフラム４に無理な外力が
加わるのを阻止して損傷を防ぐとともに、支持ガイド部
１３による弁体３のガイド支持機能と共同して弁体の過
剰な振れに起因する自動振動誘発をより一層確実に抑制
できる。In this way, by providing the stopper 16 on the axis of the valve body 3a and regulating the movement stroke of the valve body 3 between it and the fixed side support guide part 13, transient pressure due to water hammer effect etc. is applied. Even in this case, excessive movement of the valve body 3 is prevented. This prevents excessive external force from being applied to the diaphragm 4 to prevent damage, and also works together with the guide support function of the valve body 3 by the support guide section 13 to prevent automatic vibrations caused by excessive vibration of the valve body. This can be suppressed even more reliably.
次に第４図に更に異なる実施例を示す。この実施例は、
先記した各実施例における仕切り隔壁の代わりに、弁箱
１の一次圧力入口１ａにオリフィス１日を設けたもので
ある。このようにオリフィス１８を設けることにより、
−次圧力側弁室１ｂの全体がダンパ室として機能するよ
うになり、先記の実施例と同様に水翳作用によるダイア
フラム４への過大圧の印加、並びに過渡的な圧力変動に
伴う自動振動の誘発を防止できる。なお、この実施例で
は弁棒３ａに対する支持ガイドの機能は持たないが、先
記した各実施例と比べて弁箱内の構造が簡単であり、特
に簡易形として好適である。また、オリフィス１８は独
立部品として弁箱１に装着する他、弁箱Ｉと一体に成形
することもできる。Next, FIG. 4 shows a further different embodiment. This example is
An orifice is provided at the primary pressure inlet 1a of the valve box 1 instead of the partition wall in each of the embodiments described above. By providing the orifice 18 in this way,
- The entire next pressure side valve chamber 1b now functions as a damper chamber, and as in the previous embodiment, excessive pressure is applied to the diaphragm 4 due to the water drop effect, and automatic vibration occurs due to transient pressure fluctuations. This can prevent the triggering of Although this embodiment does not have the function of supporting and guiding the valve stem 3a, the structure inside the valve box is simpler than those of the previously described embodiments, and it is particularly suitable as a simple type. Further, the orifice 18 can be attached to the valve box 1 as an independent component or can be molded integrally with the valve box I.
本発明によるダイアフラム形圧力調整弁は、以上説明し
たように構成されているので、次記の効果を奏する。Since the diaphragm pressure regulating valve according to the present invention is constructed as described above, it achieves the following effects.
（１）水撃などによる一次圧力の過渡的な圧力上昇が仕
切り隔壁、ないしオリフィスで画成されたダンパ室に吸
収され、受圧用ダイアフラムに直接過大な動圧が加わる
ことがないので、ダイアフラムの過大圧による損傷を防
止して耐久強度、信１性の向上が図れる。(1) A transient increase in primary pressure due to water hammer, etc. is absorbed by the damper chamber defined by the partition wall or orifice, and excessive dynamic pressure is not applied directly to the pressure-receiving diaphragm, so the diaphragm Damage due to excessive pressure can be prevented and durability and reliability can be improved.
（２）ダンパ室による流体的なダンパ作用により弁機構
の減衰係数が増加し、液体の圧力変動に伴う弁機構の自
助振動の誘発を防止できる。(2) The damping coefficient of the valve mechanism increases due to the fluid damping action of the damper chamber, and it is possible to prevent self-help vibration of the valve mechanism from occurring due to fluid pressure fluctuations.
（３）特に、仕切り隔壁に設けた支持ガイド部で弁体を
支持したことにより、ガイド機能の安定度が増して弁体
の横方向の振動誘発を防止できる。(3) In particular, since the valve body is supported by the support guide portion provided on the partition wall, the stability of the guide function is increased and the induction of lateral vibration of the valve body can be prevented.
（４）仕切り隔壁の弁体支持ガイド部に対向して弁棒の
軸上にストッパを設けて弁体の過剰な移動ストロークを
規制することにより、ダイヤフラムの損傷防止、並びに
弁体の過剰な振れに起因する自動振動の誘発をより効果
的に抑制することができる。(4) By providing a stopper on the axis of the valve stem opposite to the valve body support guide part of the partition bulkhead to restrict excessive movement stroke of the valve body, damage to the diaphragm can be prevented and excessive swinging of the valve body can be prevented. It is possible to more effectively suppress the induction of automatic vibration caused by.
第１図、第２図、第３図、第４図はそれぞれ異なる本発
明実施例の構成断面図、第５図はダイアフラム形液体圧
力調整弁の従来構造の断面図である１図において、
１：弁箱、１ａニ一次圧力入口、１ｂ＝一次側弁室、３
：弁体、４：ダイアフラム、５：付勢ばね、ｌＯ：ダン
パ室、１１：隔壁、１２：***、１３：支持ガイド第１
０
−３；
ｆ
ｅ
ｄ1, 2, 3, and 4 are cross-sectional views of different embodiments of the present invention, and FIG. 5 is a cross-sectional view of a conventional structure of a diaphragm type liquid pressure regulating valve. : Valve box, 1a primary pressure inlet, 1b = primary side valve chamber, 3
: Valve body, 4: Diaphragm, 5: Biasing spring, lO: Damper chamber, 11: Partition wall, 12: Small hole, 13: Support guide first
0 -3; f e d
Claims (1)
ダイアフラムで仕切り、該ダイアフラムに弁体を結合し
たダイアフラム形液体圧力調整弁において、前記一次側
弁室内に弁体支持ガイドを兼ねた仕切り隔壁を設け、か
つ該仕切り隔壁に***を開口して隔壁と受圧用ダイアフ
ラムとの間にダンパ室を形成したことを特徴とするダイ
アフラム形液体圧力調整弁。 ２）請求項１に記載の液体圧力調整弁において、仕切り
隔壁の弁体支持ガイド部に対向して、該ガイド部を貫通
する弁棒の軸上に弁体の過剰な移動ストロークを規制す
るストッパを設けたことを特徴とするダイヤフラム形液
体圧力調整弁。 ３）弁箱の一次側弁室を背後からばね付勢された受圧用
ダイアフラムで仕切り、該ダイアフラムに弁体を結合し
たダイアフラム形液体圧力調整弁において、弁箱の一次
圧力入口にオリフィスを設けたことを特徴とするダイア
フラム形液体圧力調整弁。[Scope of Claims] 1) In a diaphragm type liquid pressure regulating valve in which a primary side valve chamber of a valve box is partitioned by a pressure receiving diaphragm biased from behind by a spring, and a valve body is connected to the diaphragm, the primary side valve chamber is A diaphragm-type liquid pressure regulating valve characterized in that a partition wall that also serves as a valve body support guide is provided at the partition wall, and a small hole is opened in the partition wall to form a damper chamber between the partition wall and a pressure-receiving diaphragm. 2) In the liquid pressure regulating valve according to claim 1, a stopper that opposes the valve body support guide portion of the partition wall and restricts an excessive movement stroke of the valve body on the axis of the valve rod passing through the guide portion. A diaphragm type liquid pressure regulating valve characterized by being provided with. 3) In a diaphragm type liquid pressure regulating valve in which the primary side valve chamber of the valve box is partitioned by a pressure receiving diaphragm biased from behind by a spring, and a valve body is connected to the diaphragm, an orifice is provided at the primary pressure inlet of the valve box. A diaphragm type liquid pressure regulating valve characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2923789A JPH02255906A (en) | 1988-07-20 | 1989-02-08 | Diaphragm type liquid pressure control valve |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18080488 | 1988-07-20 | ||
| JP63-180804 | 1988-07-20 | ||
| JP63-308284 | 1988-12-06 | ||
| JP2923789A JPH02255906A (en) | 1988-07-20 | 1989-02-08 | Diaphragm type liquid pressure control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02255906A true JPH02255906A (en) | 1990-10-16 |
Family
ID=26367409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2923789A Pending JPH02255906A (en) | 1988-07-20 | 1989-02-08 | Diaphragm type liquid pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02255906A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006139446A (en) * | 2004-11-11 | 2006-06-01 | Tabuchi Corp | Reducing valve |
| JP2013218722A (en) * | 2007-04-23 | 2013-10-24 | Fisher Controls Internatl Llc | Stem guide for use with fluid adjusting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5484622A (en) * | 1977-12-17 | 1979-07-05 | Efu Emu Barubu Seisakushiyo Kk | Pressure reducing valve |
| JPS59194178A (en) * | 1983-04-15 | 1984-11-02 | Shinmikuni Kikai Seisakusho:Kk | Pressure control valve |
| JPS622378U (en) * | 1985-06-20 | 1987-01-08 |
-
1989
- 1989-02-08 JP JP2923789A patent/JPH02255906A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5484622A (en) * | 1977-12-17 | 1979-07-05 | Efu Emu Barubu Seisakushiyo Kk | Pressure reducing valve |
| JPS59194178A (en) * | 1983-04-15 | 1984-11-02 | Shinmikuni Kikai Seisakusho:Kk | Pressure control valve |
| JPS622378U (en) * | 1985-06-20 | 1987-01-08 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006139446A (en) * | 2004-11-11 | 2006-06-01 | Tabuchi Corp | Reducing valve |
| JP2013218722A (en) * | 2007-04-23 | 2013-10-24 | Fisher Controls Internatl Llc | Stem guide for use with fluid adjusting device |
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