JP2012042033A

JP2012042033A - Valve device

Info

Publication number: JP2012042033A
Application number: JP2010186016A
Authority: JP
Inventors: Shujiro Fujimoto; 修二郎藤本
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-23
Filing date: 2010-08-23
Publication date: 2012-03-01
Anticipated expiration: 2030-08-23
Also published as: JP5568407B2

Abstract

PROBLEM TO BE SOLVED: To provide a valve device capable of preventing chattering even at a low pressure setting while being of a direct operated type and structured to press a valve element using a coil spring, and capable of obtaining a constant flow rate even when pressure changes on the blower discharge side.SOLUTION: A pressure setting coil spring 11 is provided between a first spring holder 15 and a second spring holder 16. A stem 14 is pressed by the pressure setting coil spring 11 toward a valve element 13 side through the first spring holder 15, and a sealing surface section 13b of the valve element 13 is pressure-contacted with a valve seat section 12a through the pressing. The second spring holder 16 is pressed by an adjusting screw 18 screwed to an upper central part of a valve case section 17. A coil spring 21 for preventing chattering is installed between a lower surface of the first spring holder 15 and an upper surface of the valve element 13.

Description

この発明は、ブロワなどに装着され、当該ブロワの吐出流体を系の外部へ逃して流量の維持調節を行うことができる弁装置に関する。 The present invention relates to a valve device that is mounted on a blower or the like and can maintain and adjust the flow rate by letting the discharged fluid of the blower to the outside of the system.

例えば丁合い機における折丁取り出し装置として、圧縮空気を折丁に向けて吐出するノズルを備えた構造が知られており、このような構造の折丁取り出し装置には圧縮空気生成のためにブロワが利用されている。例えば、特許文献１に示された折丁取り出し装置においては、積み重ねられた折丁の最も下に位置する折丁を引き出すときに、この最も下の折丁の付近に圧縮空気を吹きかけて折丁の引き出し時の摩擦を低減するようにしており、この圧縮空気をブロワにより生成している。 For example, a structure having a nozzle that discharges compressed air toward a signature is known as a signature extracting device in a collating machine. The signature extracting device having such a structure has a blower for generating compressed air. Is being used. For example, in the signature taking-out apparatus shown in Patent Document 1, when a signature located at the bottom of stacked signatures is pulled out, the signature is blown by blowing compressed air near the bottom signature. The friction at the time of drawing out is reduced, and this compressed air is generated by a blower.

上記折丁の積み重ね箇所（圧縮空気を吹きかけるノズルの設置箇所）は上記丁合い機において複数箇所（例えば３０カ所）存在しているが、その全てが使用される状態から例えば半分だけが使用されるといった状態に変更されることがある。このような変更が行われると、上記ブロワにおける吐出側圧力が高くなり、使用箇所での圧縮空気の風量に変化が生じるので、吐出調整弁が必要になる。 There are a plurality of places (for example, 30 places) where the signatures are stacked (nozzles for blowing compressed air) in the collating machine, but only half of them are used, for example, since all of them are used. It may be changed to such a state. When such a change is made, the discharge-side pressure in the blower increases, and the air volume of the compressed air at the location of use changes, so a discharge adjustment valve is required.

このような折丁取り出し装置で用いるブロワにおける吐出調整弁としては、図６に示すように、圧力設定コイルバネ１０１を用いて設定圧力を調節できる構造の弁装置１００が用いられていた。この弁装置１００は、安全弁や逃し弁として用いられる直動タイプの弁であるが、このような直動タイプの弁を吐出調整弁としても用いることが可能である。 As a discharge regulating valve in a blower used in such a signature taking-out device, as shown in FIG. 6, a valve device 100 having a structure capable of adjusting a set pressure using a pressure setting coil spring 101 has been used. This valve device 100 is a direct acting type valve used as a safety valve or a relief valve, but such a direct acting type valve can also be used as a discharge regulating valve.

この弁装置１００における弁ケース部１０７には入力部１０２が螺着されている。この入力部１０２は図示しないブロワの流体吐出部の側に取り付けられる。上記入力部１０２にはシリンダ部１０２ｂが形成されており、このシリンダ部１０２ｂの周囲壁の上端面に環状の弁座部１０２ａが形成されている。上記のシリンダ部１０２ｂには弁体１０３のガイド部１０３ａが嵌合している。そして、上記ガイド部１０３ａの上部には鍔状部が形成されており、この鍔状部の下面のシール面部１０３ｂが上記弁座部１０２ａに当接している。上記の弁体１０３の上面中央部には凹部１０３ｃが形成されている。ステム１０４は円柱棒状の本体部の先端側に紡錘形状部１０４ａを有しており、この紡錘形状部１０４ａの先端を上記の凹部１０３ｃに係合させている。第１バネ受け１０５は、上記ステム１０４の円柱棒状の本体部の径より幾分大きな径の貫通丸穴を有しており、この貫通丸穴によって上記ステム１０４に遊嵌され、上記紡錘形状部１０４ａの後部のテーパ部によって支持されている。第２バネ受け１０６も、上記ステム１０４の円柱棒状の本体部の径より幾分大きな径の貫通丸穴を有しており、この貫通丸穴によって上記ステム１０４の上記本体部に遊嵌されている。 An input portion 102 is screwed to the valve case portion 107 in the valve device 100. The input unit 102 is attached to a fluid discharge unit side of a blower (not shown). The input portion 102 is formed with a cylinder portion 102b, and an annular valve seat portion 102a is formed on the upper end surface of the peripheral wall of the cylinder portion 102b. The guide part 103a of the valve body 103 is fitted to the cylinder part 102b. A hook-shaped portion is formed on the upper portion of the guide portion 103a, and a seal surface portion 103b on the lower surface of the hook-shaped portion is in contact with the valve seat portion 102a. A concave portion 103 c is formed at the center of the upper surface of the valve body 103. The stem 104 has a spindle-shaped portion 104a on the distal end side of the cylindrical rod-shaped main body portion, and the distal end of the spindle-shaped portion 104a is engaged with the recess 103c. The first spring receiver 105 has a through-round hole having a diameter somewhat larger than the diameter of the cylindrical rod-shaped main body portion of the stem 104, and is loosely fitted into the stem 104 by the through-round hole. It is supported by a taper portion at the rear of 104a. The second spring support 106 also has a through-round hole having a diameter somewhat larger than the diameter of the cylindrical rod-like main body portion of the stem 104, and is loosely fitted into the main body portion of the stem 104 by the through-round hole. Yes.

第１バネ受け１０５と第２バネ受け１０６との間に上記圧力設定コイルバネ１０１が設けられている。この圧力設定コイルバネ１０１によって第１バネ受け１０５を介してステム１０４が弁体１０３の側に押圧され、この押圧によって上記弁体１０３のシール面部１０３ｂが上記弁座部１０２ａに圧接する。上記第２バネ受け１０６は弁ケース部１０７の上部の中央箇所に螺着された調節ネジ１０８によって押される。調節ネジ１０８を回すことで上記第２バネ受け１０６の位置を調節することができ、この位置調節によって上記弁座部１０２ａに対する上記シール面１０３ｂの圧接力が調節されて逃がし圧力が設定される。この逃がし圧力を上回る圧力が入力部１０２（ブロワの吐出側）において発生すると、弁体１０３が圧力設定コイルバネ１０１の押圧に抗して持ち上げられて上記シール面１０３ｂと上記弁座部１０２ａとの間に隙間が発生し、入力部１０２からの流体が上記隙間を通して上記弁ケース部１０７内に進入する。弁ケース部１０７には出口部１０７ａが形成されており、弁ケース部１０７に進入した流体は上記出口部１０７ａを通じて排出されることになる。上記の調節ネジ１０８の中心部は貫通穴部１０８ａとなっており、この貫通穴部１０８ａに上記ステム１０４の後端側が嵌合している。また、調節ネジ１０８の調節位置はナット１０９を締めつけることでロックされる。そして、上記弁ケース部１０７の上端部には雄ネジ部１０７ｂが形成されており、この雄ネジ部１０７ｂにキャップ１２０を螺合することができる。このキャップ１２０によって調節ネジ１０８及びナット１０９が覆われる。 The pressure setting coil spring 101 is provided between the first spring receiver 105 and the second spring receiver 106. The stem 104 is pressed toward the valve body 103 by the pressure setting coil spring 101 via the first spring receiver 105, and the seal surface portion 103b of the valve body 103 is pressed against the valve seat portion 102a by this pressing. The second spring receiver 106 is pushed by an adjusting screw 108 screwed to the central portion of the upper part of the valve case portion 107. The position of the second spring receiver 106 can be adjusted by turning the adjusting screw 108, and the pressure contact force of the seal surface 103b with respect to the valve seat portion 102a is adjusted by this position adjustment to set the relief pressure. When a pressure exceeding the relief pressure is generated at the input portion 102 (blower discharge side), the valve body 103 is lifted against the pressure setting coil spring 101 and pressed between the seal surface 103b and the valve seat portion 102a. And a fluid from the input part 102 enters the valve case part 107 through the gap. An outlet 107a is formed in the valve case 107, and the fluid that has entered the valve case 107 is discharged through the outlet 107a. The center portion of the adjusting screw 108 is a through hole portion 108a, and the rear end side of the stem 104 is fitted into the through hole portion 108a. The adjustment position of the adjustment screw 108 is locked by tightening the nut 109. A male screw portion 107b is formed at the upper end of the valve case portion 107, and the cap 120 can be screwed into the male screw portion 107b. The cap 120 covers the adjustment screw 108 and the nut 109.

上記の折丁取り出し装置では、吸入側と吐出側との圧力差が例えば５０ｋＰａ程度とすることができるように設計されたブロワ（例えば、ルーツ式ブロワ）を用いると共に、設定圧力を５０ｋＰａ程度に設定できるように設計された弁装置１００を用いることが行われる。また、大型のブロワを用いてその吐出空気を分岐し、各分岐路に弁装置１００を配置することも行われている。 In the above-described signature take-out device, a blower (for example, a Roots-type blower) designed so that the pressure difference between the suction side and the discharge side can be set to about 50 kPa, for example, and the set pressure is set to about 50 kPa. The valve device 100 designed to be able to be used is used. Moreover, the discharge apparatus is branched using a large sized blower, and the valve apparatus 100 is arrange | positioned to each branch path.

ここで、吸入側と吐出側との圧力差が例えば２０ｋＰａ近傍となる状態でブロワを稼働できるならば、上記の５０ｋＰａ近傍となる場合に比べて吐出空気の温度上昇を抑えることができると共に、ブロワに加わる負担を軽減してブロワのメンテナンス費の軽減も図れる。しかしながら、このような２０ｋＰａ近傍或いはそれよりも低い圧力に設定した上で、ブロワ吐出側に圧力変化があっても一定の風量が得られるようにブロワを使用する場合、吐出調整弁の役割が重要になってくる。 Here, if the blower can be operated in a state where the pressure difference between the suction side and the discharge side is, for example, about 20 kPa, the temperature rise of the discharge air can be suppressed as compared with the case where the pressure difference is about 50 kPa, and the blower The maintenance cost of the blower can be reduced by reducing the burden on the machine. However, when a blower is used so that a constant air volume can be obtained even if there is a pressure change on the blower discharge side after setting the pressure in the vicinity of 20 kPa or lower, the role of the discharge adjustment valve is important. It becomes.

特許文献２は、ブロワ吐出側に圧力変化があっても一定の風量が得られ、小動力で運転可能な安全弁を備えたルーツ式ブロワを開示している。この特許文献２には、「ところで、吸入側と吐出側との圧力差が１５ｋＰａの範囲内において使用されるルーツ式ブロワにおいては、安全弁の役割が重要であり、特許文献１に見られるようなコイルバネを用いて設定圧力を調節する構造の安全弁では、バネ定数の低いコイルバネを用いたとしても低い圧力に設定する調節が難しい。このため、吐出側の圧力が瞬間的に上昇したときのガスを外部へ逃す際に圧力上昇状態が速やかに解消しないので、ルーツ式ブロワの駆動モータがオーバーロードになる虞がある。そこで、かかる事態を考慮して、出力の大きな駆動モータを選定せざるを得なかった。」の記述がある。この文中の特許文献１といのうは、実公昭４５−２７９９０号公報のリリーフ弁の改良ことである。 Patent Document 2 discloses a Roots-type blower provided with a safety valve that can obtain a constant air volume even when there is a pressure change on the blower discharge side and can be operated with small power. In Patent Document 2, “By the way, in a Roots-type blower used within a pressure difference of 15 kPa between the suction side and the discharge side, the role of a safety valve is important. With a safety valve that uses a coil spring to adjust the set pressure, it is difficult to adjust to a low pressure even if a coil spring with a low spring constant is used. Since the pressure rise state does not resolve quickly when letting it go outside, there is a risk that the drive motor of the Roots-type blower may be overloaded. There was no description. " Patent Document 1 in this document is an improvement of the relief valve disclosed in Japanese Utility Model Publication No. 45-27990.

上記特許文献２では、自重によって弁座への接触状態を保持する弁体を設けると共にこの弁体の後部にチャタリング防止用のバネ部材を装着した安全弁を備えたルーツ式ブロワを開示している。 Patent Document 2 discloses a Roots-type blower provided with a safety valve that is provided with a valve body that maintains a contact state with the valve seat by its own weight and that has a spring member for preventing chattering at the rear part of the valve body.

特開２００５−２１２９５６号公報Japanese Patent Application Laid-Open No. 2005-212956 特開２００９−８５０４９号公報JP 2009-85049 A

しかしながら、上記のごとく弁体の自重を利用する弁装置では装置が重くなってしまう他、この弁装置を垂直に配置するといった制約のために使い勝手が悪いという欠点がある。また、図６に示したような直動型の弁装置の構造を利用し、部材追加でチャタリングを防止できれば弁装置のコスト低減が図れることになる。 However, the valve device using the dead weight of the valve body as described above has a drawback that the device becomes heavy and that the valve device is not easy to use due to restrictions such as vertical arrangement. Further, if chattering can be prevented by adding a member using the structure of the direct acting valve device as shown in FIG. 6, the cost of the valve device can be reduced.

この発明は、直動タイプでコイルバネを用いて弁体を押圧する構造でありながら低圧力設定でもチャタリングを防止し、ブロワ等の吐出側に圧力変化があっても一定の流量を得ることを可能にする弁装置を提供することを目的とする。 This invention is a direct acting type structure that uses a coil spring to press the valve body, but prevents chattering even at low pressure settings, and can obtain a constant flow rate even when there is a pressure change on the discharge side of the blower, etc. An object of the present invention is to provide a valve device.

この発明の弁装置は、上記の課題を解決するために、弁ケースと、上記弁ケース内に設けられた圧力設定コイルバネと、上記圧力設定コイルバネの一端側を受ける第１バネ受けと、上記圧力設定コイルバネの他端側を受ける第２バネ受けと、上記第１バネ受け及び第２バネ受けの各々に形成された貫通穴に棒状本体部が挿通し、この棒状本体部の先端側の係止箇所で上記第１バネ受けを支持し、この第１バネ受けを介して上記圧力設定コイルバネの荷重を受けるステム部材と、上記ステム部材の先端が接触しこのステム部材を介して上記圧力設定コイルバネの荷重を受ける弁体と、上記弁体が接触する弁座部と、上記ステム部材の棒状本体部が挿通する貫通穴部を有して上記ステム部材に外嵌され、上記第２バネ受けに対する押圧力の設定が行えるように設けられた調節ネジと、を備えた弁装置であって、上記第１バネ受けと上記弁体との間にチャタリング防止用の弾性体を縮装したことを特徴とする。 In order to solve the above problems, the valve device of the present invention includes a valve case, a pressure setting coil spring provided in the valve case, a first spring receiver that receives one end of the pressure setting coil spring, and the pressure A rod-shaped main body is inserted into a second spring receiver that receives the other end of the setting coil spring, and through holes formed in each of the first spring receiver and the second spring receiver, and the distal end side of the rod-shaped main body is locked. A stem member that supports the first spring receiver at a location and receives the load of the pressure setting coil spring via the first spring receiver, and a tip of the stem member comes into contact with the pressure setting coil spring via the stem member. A valve body that receives a load, a valve seat portion that contacts the valve body, and a through-hole portion through which the rod-like main body portion of the stem member is inserted, are fitted onto the stem member and are pressed against the second spring receiver. Pressure setting is And adjusting screw provided so as to obtain, a valve device provided with, characterized in that the compressed state of the elastic body for chattering prevention between the first spring bearing and the valve body.

上記の構成であれば、上記第１バネ受けと上記弁体との間に縮装したチャタリング防止用の弾性体により、チャタリングを防止しつつ一定の流量を得る吐出量調整弁として用いることが可能になる。 If it is said structure, it can be used as a discharge amount adjustment valve which obtains a fixed flow volume, preventing chattering by the elastic body for chattering prevention compacted between the said 1st spring receptacle and the said valve body. become.

上記の弁装置において、上記弾性体は貫通穴を有し、この貫通穴に上記ステム部材を貫通させて設けられた、コイルバネ、波バネ、皿バネ、板バネ又はゴム部材であってもよい。或いは、上記弾性体は貫通穴を有し、この貫通穴に上記ステム部材を貫通させて設けられ、荷重中心が上記ステム部材の中心に対して偏心するように設けられた弾性体であってもよい。或いは、上記弾性体は、上記ステム部材の中心から離間した位置に配置された１個又は複数個の弾性体から成り、上記１個又は複数個の弾性体はその全体の荷重中心が上記ステム部材の中心位置とならないように配置されていてもよい。或いは、上記弾性体は、上記ステム部材の中心から離間した位置に配置された複数個の弾性体から成り、上記複数個の弾性体はその全体の荷重の中心が上記ステム部材の中心位置となるように配置されていてもよい。 In the valve device described above, the elastic body may be a coil spring, a wave spring, a disc spring, a leaf spring, or a rubber member that has a through hole and is provided through the stem member. Alternatively, the elastic body may be an elastic body that has a through hole, is provided so that the stem member passes through the through hole, and the load center is eccentric with respect to the center of the stem member. Good. Alternatively, the elastic body is composed of one or a plurality of elastic bodies arranged at positions spaced from the center of the stem member, and the center of the load of the one or the plurality of elastic bodies is the stem member. It may be arranged so as not to be in the center position. Alternatively, the elastic body is composed of a plurality of elastic bodies arranged at positions spaced from the center of the stem member, and the plurality of elastic bodies has the center of the entire load as the center position of the stem member. It may be arranged as follows.

また、この発明の弁装置は、弁ケースと、上記弁ケース内に設けられた圧力設定コイルバネと、上記圧力設定コイルバネの一端側を受ける第１バネ受けと、上記圧力設定コイルバネの他端側を受ける第２バネ受けと、上記第１バネ受け及び第２バネ受けの各々に形成された貫通穴に棒状本体部が挿通し、この棒状本体部の先端側の係止箇所で上記第１バネ受けを支持し、この第１バネ受けを介して上記圧力設定コイルバネの荷重を受けるステム部材と、上記ステム部材の先端が接触しこのステム部材を介して上記圧力設定コイルバネの荷重を受ける弁体と、上記弁体が接触する弁座部と、上記ステム部材の棒状本体部が挿通する貫通穴部を有して上記ステム部材に外嵌され、上記第２バネ受けに対する押圧力の設定が行えるように設けられた調節ネジと、を備えた弁装置であって、上記調節ネジの下端と上記第２バネ受けの上面との間にチャタリング防止用の弾性体を縮装したことを特徴とする。 The valve device according to the present invention includes a valve case, a pressure setting coil spring provided in the valve case, a first spring receiver that receives one end of the pressure setting coil spring, and the other end of the pressure setting coil spring. A rod-shaped main body is inserted into a second spring receiver to be received and through holes formed in each of the first spring receiver and the second spring receiver, and the first spring receiver is received at a locking portion on the distal end side of the rod-shaped main body. A stem member that receives the load of the pressure setting coil spring via the first spring receiver, and a valve body that receives the load of the pressure setting coil spring via the stem member that contacts the tip of the stem member; A valve seat portion that contacts the valve body and a through-hole portion through which the rod-shaped main body portion of the stem member is inserted so that the stem member can be externally fitted so that the pressing force for the second spring receiver can be set. Provided A valve apparatus having a section screw, and characterized by being compressively elastic member for chattering prevention between the upper surface of the receiving lower end and the second spring of the adjustment screw.

かかる構成においても、上記調節ネジの下端と上記第２バネ受けの上面との間に縮装したチャタリング防止用の弾性体により、チャタリングを防止しつつ一定の流量を得る吐出量調整弁として用いることが可能になる。 Even in such a configuration, it is used as a discharge amount adjusting valve that obtains a constant flow rate while preventing chattering by the elastic material for chattering that is contracted between the lower end of the adjusting screw and the upper surface of the second spring receiver. Is possible.

また、この発明の弁装置は、弁ケースと、上記弁ケース内に設けられた圧力設定コイルバネと、上記圧力設定コイルバネの一端側を受ける第１バネ受けと、上記圧力設定コイルバネの他端側を受ける第２バネ受けと、上記第１バネ受け及び第２バネ受けの各々に形成された貫通穴に棒状本体部が挿通し、この棒状本体部の先端側の係止箇所で上記第１バネ受けを支持し、この第１バネ受けを介して上記圧力設定コイルバネの荷重を受けるステム部材と、上記ステム部材の先端が接触しこのステム部材を介して上記圧力設定コイルバネの荷重を受ける弁体と、上記弁体が接触する弁座部と、上記ステム部材の棒状本体部が挿通する貫通穴部を有して上記ステム部材に外嵌され、上記第２バネ受けに対する押圧力の設定が行えるように設けられた調節ネジと、上記調節ネジを覆うように設けられるキャップと、を備えた弁装置であって、上記調節ネジの上記貫通穴部内であって上記ステム部材の棒状本体部の後端に接するようにチャタリング防止用の弾性体が設けられ、上記キャップが装着されることによって上記弾性体が縮装されることを特徴とする。 The valve device according to the present invention includes a valve case, a pressure setting coil spring provided in the valve case, a first spring receiver that receives one end of the pressure setting coil spring, and the other end of the pressure setting coil spring. A rod-shaped main body is inserted into a second spring receiver to be received and through holes formed in each of the first spring receiver and the second spring receiver, and the first spring receiver is received at a locking portion on the distal end side of the rod-shaped main body. A stem member that receives the load of the pressure setting coil spring via the first spring receiver, and a valve body that receives the load of the pressure setting coil spring via the stem member that contacts the tip of the stem member; A valve seat portion that contacts the valve body and a through-hole portion through which the rod-shaped main body portion of the stem member is inserted so that the stem member can be externally fitted so that the pressing force for the second spring receiver can be set. Provided A valve device comprising a node screw and a cap provided so as to cover the adjustment screw so as to be in contact with the rear end of the rod-shaped main body portion of the stem member in the through hole portion of the adjustment screw. An elastic body for preventing chattering is provided, and the elastic body is contracted by mounting the cap.

かかる構成においても、上記調節ネジの上記貫通穴部内であって上記ステム部材の棒状本体部の後端に接するように縮装されたチャタリング防止用の弾性体により、チャタリングを防止しつつ一定の流量を得る吐出量調整弁として用いることが可能になる。 Even in such a configuration, a constant flow rate is prevented while chattering is prevented by the elastic body for chattering that is shrunk so as to be in contact with the rear end of the rod-shaped main body portion of the stem member in the through hole portion of the adjusting screw. It can be used as a discharge amount adjusting valve for obtaining

本発明の弁装置であれば、直動タイプでコイルバネを用いて弁体を押圧する構造でありながら低圧力設定でもチャタリングを防止し、ブロワ吐出側に圧力変化があっても一定の流量を得ることが可能になるという効果を奏する。 The valve device of the present invention is a direct acting type structure that uses a coil spring to press the valve body, but prevents chattering even at a low pressure setting, and obtains a constant flow rate even if there is a pressure change on the blower discharge side. There is an effect that it becomes possible.

本発明の一実施形態に係る弁装置を示した断面図である。It is sectional drawing which showed the valve apparatus which concerns on one Embodiment of this invention. 同図（Ａ）は本発明の他の実施形態に係る弁装置を示した断面図であり、同図（Ｂ）はこの弁装置に設けられる板バネを示した斜視図である。FIG. 4A is a cross-sectional view showing a valve device according to another embodiment of the present invention, and FIG. 4B is a perspective view showing a leaf spring provided in the valve device. 同図（Ａ）は本発明の他の実施形態に係る弁装置を示した断面図であり、同図（Ｂ）はこの弁装置に設けられる板バネを示した斜視図である。FIG. 4A is a cross-sectional view showing a valve device according to another embodiment of the present invention, and FIG. 4B is a perspective view showing a leaf spring provided in the valve device. 本発明の他の実施形態に係る弁装置を示した断面図である。It is sectional drawing which showed the valve apparatus which concerns on other embodiment of this invention. 本発明の他の実施形態に係る弁装置を示した断面図である。It is sectional drawing which showed the valve apparatus which concerns on other embodiment of this invention. 従来の弁装置を示した断面図である。It is sectional drawing which showed the conventional valve apparatus.

次に、この発明の実施形態に係る弁装置を添付図面に基づいて具体的に説明する。なお、本発明に係る弁装置は、下記の実施形態に示したものに限定されず、その要旨を変更しない範囲において適宜変更して実施できるものである。 Next, a valve device according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. The valve device according to the present invention is not limited to those shown in the following embodiments, and can be implemented with appropriate modifications within a range that does not change the gist thereof.

この実施形態に係る弁装置（以下、吐出調整弁という）は、弁体部材の自重を利用するものではなく、図１に示しているように、圧力設定コイルバネ１１を用いて弁体１３を押圧して設定圧力の調節が行える構造の吐出調整弁１０Ａである。この吐出調整弁１０Ａにおける弁ケース部１７には入力部１２が螺着されている。この入力部１２は図示しないブロワの流体吐出部の側に設けられる。上記入力部１２にはシリンダ部１２ｂが形成されており、このシリンダ部１２ｂの周囲壁の上端面に環状の弁座部１２ａが形成されている。上記のシリンダ部１２ｂには弁体１３のガイド部１３ａが嵌合している。そして、上記ガイド部１３ａの上部には鍔状部が形成されており、この鍔状部の下面のシール面部１３ｂが上記弁座部１２ａに当接している。上記の弁体１３の上面中央部には凹部１３ｃが形成されている。この凹部１３ｃの底側はすり鉢状になっている。 The valve device according to this embodiment (hereinafter referred to as a discharge regulating valve) does not use the weight of the valve body member, and presses the valve body 13 using a pressure setting coil spring 11 as shown in FIG. Thus, the discharge regulating valve 10A has a structure capable of adjusting the set pressure. The input part 12 is screwed to the valve case part 17 in the discharge regulating valve 10A. The input unit 12 is provided on the side of a fluid discharge unit of a blower (not shown). A cylinder portion 12b is formed in the input portion 12, and an annular valve seat portion 12a is formed on the upper end surface of the peripheral wall of the cylinder portion 12b. The guide portion 13a of the valve body 13 is fitted to the cylinder portion 12b. A hook-shaped portion is formed on the upper portion of the guide portion 13a, and a seal surface portion 13b on the lower surface of the hook-shaped portion is in contact with the valve seat portion 12a. A concave portion 13 c is formed at the center of the upper surface of the valve body 13. The bottom side of the recess 13c has a mortar shape.

ステム１４は円柱棒状の本体部の先端側に紡錘形状部（バネ受け係止箇所）１４ａを有しており、この紡錘形状部１４ａの先端（円錐部）を上記の凹部１３ｃに係合させている。第１バネ受け１５は、上記ステム１４の円柱棒状の本体部の径より幾分大きな径の貫通丸穴を有しており、この貫通丸穴によって上記ステム１４に遊嵌され、上記紡錘形状部１４ａの後部テーパ部によって支持されている。第２バネ受け１６も、上記ステム１４の円柱棒状の本体部の径より幾分大きな径の貫通丸穴を有しており、この貫通丸穴によって上記ステム１４の上記本体部に遊嵌されている。 The stem 14 has a spindle-shaped portion (spring receiving locking portion) 14a on the tip end side of the cylindrical rod-shaped main body portion, and the tip (conical portion) of the spindle-shaped portion 14a is engaged with the recess 13c. Yes. The first spring receiver 15 has a through-round hole having a diameter somewhat larger than the diameter of the cylindrical rod-shaped main body of the stem 14, and is loosely fitted into the stem 14 by the through-round hole, and the spindle-shaped portion It is supported by the rear taper part of 14a. The second spring receiver 16 also has a through-round hole having a diameter somewhat larger than the diameter of the cylindrical rod-shaped main body portion of the stem 14, and is loosely fitted into the main body portion of the stem 14 by the through-round hole. Yes.

第１バネ受け１５と第２バネ受け１６との間に圧力設定コイルバネ１１が設けられている。この圧力設定コイルバネ１１によって第１バネ受け１５を介してステム１４が弁体１３の側に押圧され、この押圧によって上記弁体１３のシール面部１３ｂが上記弁座部１２ａに圧接する。上記第２バネ受け１６は弁ケース部１７の上部の中央箇所に螺着された調節ネジ１８によって押圧される。この調節ネジ１８を回すことで上記第２バネ受け１６の位置を調節することができ、この位置調節によって上記弁座部１２ａに対する上記シール面１３ｂの圧接力が調節されて逃がし圧力が設定される。この逃がし圧力を上回る圧力が入力部１２（ブロワの吐出側）において発生すると、弁体１３が圧力設定コイルバネ１１の押圧に抗して持ち上げられて上記シール面１３ｂと上記弁座部１２ａとの間に隙間が発生し、入力部１２からの流体が上記隙間を通して上記弁ケース部１７内に進入する。この弁ケース部１７には出口部１７ａが形成されており、弁ケース部１７に進入した流体は上記出口部１７ａを通じて排出されることになる。 A pressure setting coil spring 11 is provided between the first spring receiver 15 and the second spring receiver 16. The stem 14 is pressed toward the valve body 13 by the pressure setting coil spring 11 via the first spring receiver 15, and the seal surface portion 13b of the valve body 13 is pressed against the valve seat portion 12a by this pressing. The second spring receiver 16 is pressed by an adjusting screw 18 that is screwed to the central portion of the upper portion of the valve case portion 17. By turning the adjusting screw 18, the position of the second spring receiver 16 can be adjusted, and by this position adjustment, the pressure contact force of the seal surface 13b with respect to the valve seat portion 12a is adjusted to set the relief pressure. . When a pressure exceeding this relief pressure is generated at the input portion 12 (blower discharge side), the valve body 13 is lifted against the pressure setting coil spring 11 and the gap between the seal surface 13b and the valve seat portion 12a. And a fluid from the input part 12 enters the valve case part 17 through the gap. The valve case portion 17 is formed with an outlet portion 17a, and the fluid that has entered the valve case portion 17 is discharged through the outlet portion 17a.

上記の調節ネジ１８の中心は貫通穴部１８ａとなっており、この貫通穴部１８ａに上記ステム１４の後端側が嵌合している。また、調節ネジ１８の調節位置はナット１９を締めつけることでロックされる。そして、上記弁ケース部１７の上端部には雄ネジ部１７ｂが形成されており、この雄ネジ部１７ｂにキャップ２０を螺合することができる。このキャップ２０によって調節ネジ１８及びナット１９が覆われる。 The center of the adjusting screw 18 is a through hole 18a, and the rear end side of the stem 14 is fitted into the through hole 18a. The adjustment position of the adjustment screw 18 is locked by tightening the nut 19. And the male screw part 17b is formed in the upper end part of the said valve case part 17, The cap 20 can be screwed together to this male screw part 17b. The cap 20 covers the adjustment screw 18 and the nut 19.

第１バネ受け１５の下面と弁体１３の上面との間には、チャタリング防止用のコイルバネ２１が装着されている。上記第１バネ受け１５が上記紡錘形状部１４ａの後部テーパ部に接している状態での当該第１バネ受け１５の下面と弁体１３の上面との間の間隔は２ｍｍ程度である。そして、上記コイルバネ２１として、その自然長が８〜１０ｍｍ程度のものを用いると、上記第１バネ受け１５の下面と弁体１３の上面との間の間隔は６ｍｍ程度となる。試作品においては、上記コイルバネ２１として、ピアノ線を素材とする直径２６ｍｍ−自然長３０ｍｍ−線径１．８ｍｍ（バネ定数２．４２Ｎ／ｍｍ）であるバネをその長さが８〜１０ｍｍ程度となるに切断して利用した。なお、コイルバネ２１のバネ定数は圧力設定コイルバネ１１のバネ定数よりも小さい。 A coil spring 21 for preventing chattering is mounted between the lower surface of the first spring receiver 15 and the upper surface of the valve body 13. The distance between the lower surface of the first spring receiver 15 and the upper surface of the valve body 13 in a state where the first spring receiver 15 is in contact with the rear taper portion of the spindle-shaped portion 14a is about 2 mm. When the coil spring 21 having a natural length of about 8 to 10 mm is used, the distance between the lower surface of the first spring receiver 15 and the upper surface of the valve body 13 is about 6 mm. In the prototype, a spring having a diameter of 26 mm made of piano wire, a natural length of 30 mm, and a wire diameter of 1.8 mm (spring constant 2.42 N / mm) as the coil spring 21 has a length of about 8 to 10 mm. It was cut and used. The spring constant of the coil spring 21 is smaller than the spring constant of the pressure setting coil spring 11.

上記試作品において上記圧力設定コイルバネ１１として５０ｋＰａ用を用いるならば、ブロワの吐出側の圧力を０〜５０ｋＰａの範囲で設定することが可能となる。ここで、上記調節ネジ１８を最も緩めた状態でブロワの吐出側の圧力は０ｋＰａ付近となり、徐々に上記調節ネジ１８を締めていくと、上記コイルバネ２１による圧力設定の状態となり、更に上記調節ネジ１８を締めていくと、上記圧力設定コイルバネ１１による圧力設定の状態となる。 If 50 kPa is used as the pressure setting coil spring 11 in the prototype, the pressure on the discharge side of the blower can be set in the range of 0 to 50 kPa. Here, when the adjusting screw 18 is most loosened, the pressure on the discharge side of the blower is close to 0 kPa, and when the adjusting screw 18 is gradually tightened, the pressure is set by the coil spring 21, and further the adjusting screw When 18 is tightened, the pressure setting coil spring 11 is in a pressure setting state.

そして、上記試作品をルーツ式ブロワに使用したところ、このブロワの吐出側の圧力に変動が生じても、一定の流量を確保し、チャタリングを防止することができた。このチャタリングは、使用するブロワが脈動するタイプの場合にはこの脈動が影響する他、弁体１３が動作した時に系内の圧力に急激な変動が起きると生じやすくなる。また、このチャタリングは、ブロワの吐出圧力が低く設定された場合に生じやすい。ここで、上記の圧力設定コイルバネ１１は上記第２バネ受け１６に一端を当接させてそのバネ荷重を第１バネ受け１５を介してステム１４に作用させている一方、チャタリング防止用の上記コイルバネ２１はその一端側を第１バネ受け１５に当接させてそのバネ荷重を上記弁体１３に作用させていることになる。このため、圧力設定コイルバネ１１とコイルバネ２１の合力が単純に弁体１３に作用することにはならず、コイルバネ２１が独自に弁体１３を押圧可能となることが弁体１３における周期的上下動に対する阻害要因となり、チャタリングの発生が防止されるものと考えられる。また、上記試作品の逃がし圧力を低圧に設定した状態において、上記コイルバネ２１の付勢を受けて上記ステム１４の紡錘形状部１４ａの後部テーパ部と第１バネ受け１５との間に隙間が形成されるなら（本試作品では、４mm程度の隙間が形成される）、弁体１３が上側に持ち上げられる瞬間においては圧力設定コイルバネ１１ではなく、上記コイルバネ２１による弱い力に対して緩やかに弁体１３が持ち上がることになり、この緩やかな持ち上がりがチャタリングの防止に寄与すると考えられる。 And when the said prototype was used for the Roots type blower, even if the pressure on the discharge side of the blower fluctuated, a constant flow rate could be secured and chattering could be prevented. In the case where the blower to be used pulsates, this chattering is not only affected by this pulsation but also easily occurs when the pressure in the system suddenly changes when the valve element 13 is operated. This chattering is likely to occur when the discharge pressure of the blower is set low. Here, one end of the pressure setting coil spring 11 is brought into contact with the second spring receiver 16 and the spring load is applied to the stem 14 via the first spring receiver 15, while the coil spring for preventing chattering is provided. The one end 21 is brought into contact with the first spring receiver 15 to apply the spring load to the valve body 13. For this reason, the resultant force of the pressure setting coil spring 11 and the coil spring 21 does not simply act on the valve body 13, and the coil spring 21 can independently press the valve body 13. It is considered that the occurrence of chattering is prevented. Further, in a state where the relief pressure of the prototype is set to a low pressure, a gap is formed between the rear tapered portion of the spindle-shaped portion 14 a of the stem 14 and the first spring receiver 15 by the bias of the coil spring 21. If this is done (in this prototype, a gap of about 4 mm is formed), the valve body is not the pressure setting coil spring 11 at the moment when the valve body 13 is lifted upward, but gently against the weak force generated by the coil spring 21. 13 is lifted, and this gentle lifting is considered to contribute to the prevention of chattering.

なお、上記コイルバネ２１に替えて、中央部に上記紡錘形状部１４ａが遊嵌する貫通穴を有した、ドーナツ形状のゴム部材、波バネ、皿バネ、或いは長方形状の板バネなどを用いることができる。また、第１バネ受け１５として、第２バネ受け１６と同一のものを上下反転配置で用いる場合、上記コイルバネ２１として自然長がより長いものを用いることができる。 Instead of the coil spring 21, a donut-shaped rubber member, a wave spring, a disc spring, a rectangular leaf spring, or the like having a through hole in which the spindle-shaped portion 14a is loosely fitted in the center portion may be used. it can. Moreover, when the same thing as the 2nd spring receiver 16 is used as the 1st spring receiver 15 in the upside down arrangement | positioning, the longer natural length can be used as the said coil spring 21.

図２はこの発明の他の実施形態における吐出調整弁１０Ｂを示した図である。なお、説明の便宜上、図１に示した構成部材と同一の部材には同一の符号を付記してその説明を省略している。この吐出調整弁１０Ｂは、図２（Ａ）に示すように、板バネ２２を備えている。この板バネ２２は、第１バネ受け１５の下面と弁体１３の上面との間に配置されている。また、図２（Ｂ）にも示すように、上記板バネ２２は、全体としては平面視で長方形状であって、その本体部に貫通丸穴２２ａを有するとともに、本体部から斜めに立ち上げられた傾斜立状部２２ｂを有する。そして、この板バネ２２は、上記傾斜立状部２２ｂの折り曲げ起点を弁体１３の上面に当接させて上記貫通丸穴２２ａにステム１４の紡錘形状部１４ａを嵌合させ、上記傾斜立状部２２ｂの上端及びその反対側の本体部の縁が第１バネ受け１５の下面に接するように配置される。これにより、この板バネ２２は、ステム１４の中心から偏心した位置で弁体１３を付勢することになる。上記第１バネ受け１５が上記紡錘形状部１４ａの後部テーパ部に接した状態での当該第１バネ受け１５の下面と弁体１３の上面との間の間隔は２ｍｍ程度である。上記板バネ２２の高さ（本体部の下面から傾斜立状部２２ｂの上端までの高さ）は３．５ｍｍ（３．０〜５．０ｍｍの範囲とするのが望ましい）としている。また、上記板バネ２２の厚みは０．５ｍｍ（０．５〜１．０ｍｍの範囲とするのが望ましい）とし、そのバネ材質をＳＵＳ３０１としている。また、第１バネ受け１５の直径は５０ｍｍ、上記板バネ２２の長さは４７ｍｍ、幅は３０ｍｍ、上記貫通丸穴２２ａの直径は１８ｍｍ、上記傾斜立状部２２ｂの起点から端までの長さは１０ｍｍ、上記貫通丸穴２２ａの中心から傾斜立状部２２ｂ側の端までの長さは２２．５ｍｍとしている。 FIG. 2 is a view showing a discharge regulating valve 10B according to another embodiment of the present invention. For convenience of explanation, the same members as those shown in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. The discharge regulating valve 10B includes a leaf spring 22 as shown in FIG. The leaf spring 22 is disposed between the lower surface of the first spring receiver 15 and the upper surface of the valve body 13. Further, as shown in FIG. 2B, the plate spring 22 is generally rectangular in plan view, and has a through-hole 22a in the main body portion and rises obliquely from the main body portion. The inclined upright portion 22b is provided. And this leaf | plate spring 22 is made to contact | abut the bending starting point of the said inclination upright part 22b on the upper surface of the valve body 13, fitting the spindle-shaped part 14a of the stem 14 in the said through-round hole 22a, and the said inclination upright form. The upper end of the portion 22 b and the edge of the main body portion on the opposite side are in contact with the lower surface of the first spring receiver 15. As a result, the leaf spring 22 biases the valve body 13 at a position eccentric from the center of the stem 14. The distance between the lower surface of the first spring receiver 15 and the upper surface of the valve body 13 in a state where the first spring receiver 15 is in contact with the rear taper portion of the spindle-shaped portion 14a is about 2 mm. The height of the leaf spring 22 (height from the lower surface of the main body portion to the upper end of the inclined upright portion 22b) is 3.5 mm (desirably within a range of 3.0 to 5.0 mm). The leaf spring 22 has a thickness of 0.5 mm (preferably in the range of 0.5 to 1.0 mm), and the spring material is SUS301. The diameter of the first spring receiver 15 is 50 mm, the length of the leaf spring 22 is 47 mm, the width is 30 mm, the diameter of the through-round hole 22a is 18 mm, and the length from the starting point to the end of the inclined upright portion 22b. Is 10 mm, and the length from the center of the through-round hole 22a to the end on the inclined upright portion 22b side is 22.5 mm.

この実施例の吐出調整弁１０Ｂの逃がし圧力を低圧に設定してルーツ式ブロワに使用したところ、このブロワの吐出側の圧力に変動が生じても、一定の流量を確保し、チャタリングを防止することができた。この実施例における上記板バネ２２は、第１バネ受け１５の下面から弁体１３を下方に付勢することになり、この点において先に示した吐出調整弁１０Ａと共通する。また、上記板バネ２２の付勢を受けて上記紡錘形状部１４ａの後部テーパ部と第１バネ受け１５との間に隙間を形成し得る点も共通している。しかしながら、板バネ２２の本体部の両側に傾斜立状部２２ｂを設けたのではなく、片側のみに傾斜立状部２２を存在させたことで、弁体１３とステム１４と第１バネ受け１５における相互の力の作用に偏りが生じ、この力の作用の偏りが弁体１３の周期的上下動に対する阻害要因となり、チャタリングの防止に寄与していると考えられる。なお、傾斜立状部２２の折り曲げ起点が弁体１３の中心位置から遠い位置にあるほど、チャタリングの防止に寄与する。また、この実施形態では、上記板バネ２２の幅を３０ｍｍとしたことで、当該板バネ２２の傾斜立状部２２ｂの角部分が直径５０ｍｍの第１バネ受け１５の外周縁に当たることになり、この当たりによって板バネ２２の位置変位が生じにくくなり、当該板バネ２２の貫通丸穴２２ａが紡錘形状部１４ａに対して不所望に接触するということも殆ど無くなる。また、上記の実施形態は、上記板バネ２２が、上記弁体１３（ステム１４）の中心に対して偏心して当該弁体１３を付勢するものであるが、図２（Ａ）において二点鎖線で示すように、上記板バネ２２を上下反転配置し、傾斜立状部２２の折り曲げ起点が上記第１バネ受け１５に当たるようにしてもよいものであり、この場合の板バネ２２は、上記第１バネ受け１５（ステム１４）の中心に対して偏心して当該第１バネ受け１５を付勢するものとなる。 When the relief pressure of the discharge regulating valve 10B of this embodiment is set to a low pressure and used in a Roots type blower, even if the pressure on the discharge side of the blower fluctuates, a constant flow rate is secured and chattering is prevented. I was able to. The leaf spring 22 in this embodiment urges the valve body 13 downward from the lower surface of the first spring receiver 15, and is common to the discharge adjustment valve 10A described above in this respect. Further, there is also a common point that a gap can be formed between the rear tapered portion of the spindle-shaped portion 14 a and the first spring receiver 15 under the bias of the plate spring 22. However, the inclined upright portions 22b are not provided on both sides of the body portion of the leaf spring 22, but the inclined upright portions 22 are present only on one side, so that the valve body 13, the stem 14, and the first spring receiver 15 are provided. It is considered that the action of the mutual force is biased, and the bias of the action of the force becomes an inhibiting factor for the periodic vertical movement of the valve body 13 and contributes to the prevention of chattering. In addition, it contributes to prevention of chattering, so that the bending starting point of the inclined upright part 22 is far from the center position of the valve body 13. In this embodiment, since the width of the leaf spring 22 is 30 mm, the corner portion of the inclined upright portion 22b of the leaf spring 22 hits the outer peripheral edge of the first spring receiver 15 having a diameter of 50 mm. Due to this contact, the displacement of the leaf spring 22 is less likely to occur, and the through-round hole 22a of the leaf spring 22 hardly comes into contact with the spindle-shaped portion 14a undesirably. In the above-described embodiment, the leaf spring 22 is eccentric with respect to the center of the valve body 13 (stem 14) and biases the valve body 13, but there are two points in FIG. As indicated by the chain line, the plate spring 22 may be arranged upside down so that the bending starting point of the inclined upright portion 22 hits the first spring receiver 15. In this case, the plate spring 22 The first spring receiver 15 is biased eccentrically with respect to the center of the first spring receiver 15 (stem 14).

図３はこの発明の他の実施形態における吐出調整弁１０Ｃを示した図である。なお、説明の便宜上、図１に示した構成部材と同一の部材には同一の符号を付記してその説明を省略している。この吐出調整弁１０Ｃは、図３（Ａ）に示すように、板バネ２３を備えている。この板バネ２３は、第１バネ受け１５の下面と弁体１３の上面との間に配置されている。また、図３（Ｂ）に示すように、上記板バネ２３は、その本体部に貫通丸穴２３ａを有するとともに、本体部の縁から立ち上げられた湾曲部２３ｂを有している。上記貫通丸穴２３ａには螺子３０を差し込むことができ、この螺子３０を弁体１３の上面に螺着することで板バネ２３を弁体１３上に固定することができる。上記の湾曲部２３ｂの頂部は第１バネ受け１５の下面に接しており、上記板バネ２３は、第１バネ受け１５の下面から弁体１３を下方に付勢する。なお、第１バネ受け１５の直径は５０ｍｍであり、弁体１３の直径は６０ｍｍである。弁体１３の中心を重心位置とする三角形配置で３つの板バネ２３を配置する形態、或いは、弁体１３の中心を重心位置とする四角形配置で４つの板バネ２３を配置する形態等を採用する場合には、これら複数の板バネを合わせたバネ荷重の中心地点を弁体１３（ステム１４）の中心に一致し、偏心は生じないことになるので、図１に示した吐出調整弁１０Ａと同様の作用・効果を得ることができる。一方、このような配置としない場合には、上記複数個の板バネ（又は一個の板バネ）２３は、そのバネ荷重の中心地点が上記弁体１３（ステム１４）の中心とならないように偏心配置されることになるので、弁体１３とステム１４と第１バネ受け１５における相互の力の作用に偏りが生じ、図２に示した吐出調整弁１０Ｂと同様の効果が得られることになる。なお、複数の板バネ２３の個々のバネ荷重は互いに同じでないくもよい。また、上記板バネ２３の付勢を受けて上記紡錘形状部１４ａの後部テーパ部と第１バネ受け１５との間に隙間が形成されてもよい。また、上記板バネ２３は第１バネ受け１５の側に螺子３０等によって固定されることとしてもよい。 FIG. 3 is a view showing a discharge regulating valve 10C according to another embodiment of the present invention. For convenience of explanation, the same members as those shown in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. The discharge regulating valve 10C includes a leaf spring 23 as shown in FIG. The leaf spring 23 is disposed between the lower surface of the first spring receiver 15 and the upper surface of the valve body 13. As shown in FIG. 3B, the plate spring 23 has a through-hole 23a in the main body portion and a curved portion 23b raised from the edge of the main body portion. A screw 30 can be inserted into the through-round hole 23 a, and the leaf spring 23 can be fixed onto the valve body 13 by screwing the screw 30 onto the upper surface of the valve body 13. The top of the curved portion 23 b is in contact with the lower surface of the first spring receiver 15, and the leaf spring 23 urges the valve body 13 downward from the lower surface of the first spring receiver 15. The first spring receiver 15 has a diameter of 50 mm, and the valve body 13 has a diameter of 60 mm. A configuration in which three leaf springs 23 are arranged in a triangular arrangement with the center of the valve body 13 as the center of gravity, or a form in which four leaf springs 23 are arranged in a quadrilateral arrangement with the center of the valve body 13 as the center of gravity is employed. In this case, since the center point of the spring load obtained by combining the plurality of leaf springs coincides with the center of the valve body 13 (stem 14) and no eccentricity occurs, the discharge regulating valve 10A shown in FIG. The same actions and effects can be obtained. On the other hand, when the arrangement is not such, the plurality of leaf springs (or one leaf spring) 23 is eccentric so that the center point of the spring load is not the center of the valve body 13 (stem 14). Since they are arranged, the action of the mutual forces in the valve body 13, the stem 14 and the first spring receiver 15 is biased, and the same effect as the discharge regulating valve 10B shown in FIG. 2 is obtained. . The individual spring loads of the plurality of leaf springs 23 may not be the same. Further, a gap may be formed between the rear tapered portion of the spindle-shaped portion 14 a and the first spring receiver 15 under the bias of the plate spring 23. The leaf spring 23 may be fixed to the first spring receiver 15 side by a screw 30 or the like.

図４はこの発明の他の実施形態における吐出調整弁１０Ｄを示した断面図である。なお、説明の便宜上、図１に示した構成部材と同一の部材には同一の符号を付記してその説明を省略している。この吐出調整弁１０Ｄは、調節ネジ１８の下端面と第２バネ受け１６の上面との間にコイルバネ２４を装着している。試作品では、調節ネジ１８の下端面と第２バネ受け１６の上面との間の間隔を１０ｍｍに設定し、上記コイルバネ２４として、ピアノ線を素材とする直径１２ｍｍ−自然長２５ｍｍ−線径０．９ｍｍ（バネ定数０．８５Ｎ／ｍｍ）であるバネを自然長が１２ｍｍとなるように切断したものを用いた。 FIG. 4 is a sectional view showing a discharge regulating valve 10D according to another embodiment of the present invention. For convenience of explanation, the same members as those shown in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. In the discharge adjustment valve 10 </ b> D, a coil spring 24 is mounted between the lower end surface of the adjustment screw 18 and the upper surface of the second spring receiver 16. In the prototype, the distance between the lower end surface of the adjusting screw 18 and the upper surface of the second spring receiver 16 is set to 10 mm, and the coil spring 24 is made of piano wire as a material of diameter 12 mm—natural length 25 mm—wire diameter 0. A spring having a spring length of 0.9 mm (spring constant 0.85 N / mm) cut so that the natural length is 12 mm was used.

このような試作品においてもチャタリングを防止することができた。上記吐出調整弁１０Ｄの逃し圧力を低圧の設定とした場合においては、弁体１３が上側に持ち上げられるときに、上記のコイルバネ２４による弱い力で上記弁体１３が緩やかに持ち上げられることになり、この緩やかな持ち上がりによってチャタリングが防止されるものと考えられる。また、図１に示した吐出調整弁１０Ａと同様に、圧力設定コイルバネ１１とコイルバネ２４の合力が単純に弁体１３に作用することにはならず、コイルバネ２４が第２バネ受け１６等を介して独自に弁体１３を押圧できることが弁体１３の周期的上下動に対する阻害要因となり、上記チャタリングの発生が防止されるものと考えられる。更に、試作品では、上記ステム１４の円柱棒状部と上記コイルバネ２４の外周とが接触してステム１４の上下動に対する抵抗が生じていると考えられ、この抵抗が上記チャタリングの発生の防止に寄与しているとも考えられる。 Chattering could be prevented even in such prototypes. In the case where the relief pressure of the discharge regulating valve 10D is set to a low pressure, when the valve body 13 is lifted upward, the valve body 13 is gently lifted by a weak force by the coil spring 24, It is considered that chattering is prevented by this gentle lifting. Further, similarly to the discharge regulating valve 10A shown in FIG. 1, the resultant force of the pressure setting coil spring 11 and the coil spring 24 does not simply act on the valve body 13, and the coil spring 24 passes through the second spring receiver 16 and the like. Thus, it can be considered that the ability to press the valve body 13 independently becomes an obstacle to the periodic vertical movement of the valve body 13 and the occurrence of chattering is prevented. Further, in the prototype, it is considered that the cylindrical rod-shaped portion of the stem 14 and the outer periphery of the coil spring 24 are in contact with each other, and resistance to vertical movement of the stem 14 is generated, and this resistance contributes to prevention of chattering. It is thought that it is doing.

図５は他の実施形態における吐出調整弁１０Ｅを示した断面図である。なお、説明の便宜上、図１に示した構成部材と同一の部材には同一の符号を付記してその説明を省略している。この吐出調整弁１０Ｅにおいては、調節ネジ１８の貫通穴部１８ａ内であってステム１４の後端側にコイルバネ２５が挿入されており、上記キャップ２０が装着されると上記コイルバネ２５が圧縮されて上記ステム１４が弁体１３の側に付勢されるようになっている。試作品では、ステム１４の後端とキャップ２０の内面との間の長さは３５ｍｍであり、上記コイルバネ２５として、ピアノ線を素材とする直径１０ｍｍ−自然長４０ｍｍ−線径１．０ｍｍ（バネ定数１．０３Ｎ／ｍｍ）であるバネを２本挿入した。 FIG. 5 is a sectional view showing a discharge regulating valve 10E according to another embodiment. For convenience of explanation, the same members as those shown in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. In the discharge regulating valve 10E, a coil spring 25 is inserted into the through hole 18a of the adjusting screw 18 on the rear end side of the stem 14, and when the cap 20 is attached, the coil spring 25 is compressed. The stem 14 is biased toward the valve body 13. In the prototype, the length between the rear end of the stem 14 and the inner surface of the cap 20 is 35 mm, and the coil spring 25 has a diameter of 10 mm made of piano wire, a natural length of 40 mm, and a wire diameter of 1.0 mm (spring Two springs having a constant of 1.03 N / mm were inserted.

このような試作品においてもチャタリングを防止することができた。上記吐出調整弁１０Ｅの逃がし圧力を低圧の設定とした場合においては、弁体１３が上側に持ち上げられるときに、上記のコイルバネ２５の弱い力で上記弁体１３が緩やかに持ち上げられることになり、この緩やかな持ち上がりによってチャタリングが防止されるものと考えられる。また、吐出調整弁１０Ａと同様に、圧力設定コイルバネ１１とコイルバネ２５の合力が単純に弁体１３に作用することにはならず、コイルバネ２５がステム１４を介して独自に弁体１３を押圧できることが弁体１３の周期的上下動に対する阻害要因となり、上記チャタリングの発生が防止されるものと考えられる。 Chattering could be prevented even in such prototypes. When the relief pressure of the discharge regulating valve 10E is set to a low pressure, when the valve body 13 is lifted upward, the valve body 13 is gently lifted by the weak force of the coil spring 25, It is considered that chattering is prevented by this gentle lifting. Similarly to the discharge adjustment valve 10 </ b> A, the resultant force of the pressure setting coil spring 11 and the coil spring 25 does not simply act on the valve body 13, and the coil spring 25 can independently press the valve body 13 via the stem 14. It becomes an obstruction factor for the periodic vertical movement of the valve body 13 and the occurrence of chattering is considered to be prevented.

なお、以上に示したような実施形態に限るものではなく、一つの弁装置に対して例えばコイルバネ２１とコイルバネ２４の両方を用いたタイプ（図１と図４の融合タイプ）等、チャタリングを防止する弾性体を複数箇所に配置する構成とすることも可能である。また、チャタリング防止用のバネ等の寸法やバネ定数などについても、記載のものに限るものではないし、また、圧力設定コイルバネ１１として５０ｋＰａ以外のものが用いられて仕様が変われば、チャタリング防止用のコイルバネ等の寸法やバネ定数なども変わるものである。 It should be noted that the present invention is not limited to the embodiment as described above, and chattering is prevented, for example, a type using both the coil spring 21 and the coil spring 24 (a fusion type of FIGS. 1 and 4) for one valve device. It is also possible to adopt a configuration in which the elastic body to be arranged is arranged at a plurality of locations. Further, the dimensions and spring constants of chattering prevention springs and the like are not limited to those described, and if a specification other than 50 kPa is used as the pressure setting coil spring 11 and the specifications are changed, The dimensions and spring constant of the coil spring and the like are also changed.

１１圧力設定コイルバネ
１２入力部
１２ａ弁座部
１３弁体
１３ｂシール面
１４ステム部材
１４ａ紡錘形状部
１５第１バネ受け
１６第２バネ受け
１７弁ケース
１８調節ネジ
２０キャップ
２１コイルバネ（チャタリング防止用の弾性体）
２２板バネ（チャタリング防止用の弾性体）
２３板バネ（チャタリング防止用の弾性体）
２４コイルバネ（チャタリング防止用の弾性体）
２５コイルバネ（チャタリング防止用の弾性体） DESCRIPTION OF SYMBOLS 11 Pressure setting coil spring 12 Input part 12a Valve seat part 13 Valve body 13b Seal surface 14 Stem member 14a Spindle shape part 15 1st spring receiver 16 2nd spring receiver 17 Valve case 18 Adjustment screw 20 Cap 21 Coil spring (elasticity for chattering prevention) body)
22 Leaf spring (elastic body for chattering prevention)
23 Leaf spring (elastic body to prevent chattering)
24 Coil spring (elastic body to prevent chattering)
25 Coil spring (elastic body to prevent chattering)

Claims

A valve case,
A pressure setting coil spring provided in the valve case;
A first spring receiver that receives one end of the pressure setting coil spring;
A second spring receiver for receiving the other end of the pressure setting coil spring;
A rod-shaped main body portion is inserted through a through hole formed in each of the first spring receiver and the second spring receiver, and the first spring receiver is supported at a locking portion on the distal end side of the rod-shaped main body portion. A stem member that receives a load of the pressure setting coil spring via a spring receiver;
A valve body that contacts the tip of the stem member and receives the load of the pressure setting coil spring through the stem member;
A valve seat part in contact with the valve body;
A valve having a through-hole portion through which the rod-shaped main body portion of the stem member is inserted, and an adjustment screw that is externally fitted to the stem member and is provided so as to be able to set a pressing force for the second spring receiver A device,
A valve device, wherein an elastic body for preventing chattering is mounted between the first spring support and the valve body.

2. The valve device according to claim 1, wherein the elastic body is a coil spring, a wave spring, a disc spring, a leaf spring, or a rubber member that has a through hole and is provided by penetrating the stem member in the through hole. A valve device characterized by that.

2. The valve device according to claim 1, wherein the elastic body has a through hole, the stem member is provided through the through hole, and the load center is provided eccentric to the center of the stem member. A valve device characterized by being an elastic body.

2. The valve device according to claim 1, wherein the elastic body includes one or a plurality of elastic bodies arranged at positions spaced from the center of the stem member, and the one or the plurality of elastic bodies are A valve device, wherein the entire load center is arranged not to be the center position of the stem member.

2. The valve device according to claim 1, wherein the elastic body includes a plurality of elastic bodies arranged at positions spaced from the center of the stem member, and the plurality of elastic bodies has a center of an entire load. A valve device, wherein the valve device is arranged so as to be at a center position of the stem member.

A valve case,
A pressure setting coil spring provided in the valve case;
A first spring receiver that receives one end of the pressure setting coil spring;
A second spring receiver for receiving the other end of the pressure setting coil spring;
A rod-shaped main body portion is inserted through a through hole formed in each of the first spring receiver and the second spring receiver, and the first spring receiver is supported at a locking portion on the distal end side of the rod-shaped main body portion. A stem member that receives a load of the pressure setting coil spring via a spring receiver;
A valve body that contacts the tip of the stem member and receives the load of the pressure setting coil spring through the stem member;
A valve seat part in contact with the valve body;
A valve having a through-hole portion through which the rod-shaped main body portion of the stem member is inserted, and an adjustment screw that is externally fitted to the stem member and is provided so as to be able to set a pressing force for the second spring receiver A device,
A valve device, wherein an elastic body for preventing chattering is mounted between a lower end of the adjusting screw and an upper surface of the second spring support.

A valve case,
A pressure setting coil spring provided in the valve case;
A first spring receiver that receives one end of the pressure setting coil spring;
A second spring receiver for receiving the other end of the pressure setting coil spring;
A rod-shaped main body portion is inserted through a through hole formed in each of the first spring receiver and the second spring receiver, and the first spring receiver is supported at a locking portion on the distal end side of the rod-shaped main body portion. A stem member that receives a load of the pressure setting coil spring via a spring receiver;
A valve body that contacts the tip of the stem member and receives the load of the pressure setting coil spring through the stem member;
A valve seat part in contact with the valve body;
An adjustment screw that has a through-hole portion through which the rod-shaped main body portion of the stem member is inserted and is externally fitted to the stem member so as to be able to set a pressing force with respect to the second spring receiver;
A valve device provided with a cap provided to cover the adjustment screw,
An elastic body for preventing chattering is provided in the through hole portion of the adjustment screw so as to contact the rear end of the rod-like main body portion of the stem member, and the elastic body is contracted by mounting the cap. A valve device.