JPH0448961B2 - - Google Patents
Info
- Publication number
- JPH0448961B2 JPH0448961B2 JP59182382A JP18238284A JPH0448961B2 JP H0448961 B2 JPH0448961 B2 JP H0448961B2 JP 59182382 A JP59182382 A JP 59182382A JP 18238284 A JP18238284 A JP 18238284A JP H0448961 B2 JPH0448961 B2 JP H0448961B2
- Authority
- JP
- Japan
- Prior art keywords
- leaf spring
- valve body
- elastic
- valve
- arc
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
- F16L55/052—Pneumatic reservoirs
- F16L55/053—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Pipe Accessories (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、各種の油圧装置及び水圧装置等の
液圧装置に関するもので、更に述べると、液圧装
置における騒音や脈動を防止する脈動吸収器に関
するもので、この装置は、液体の搬送にも利用さ
れる。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to various hydraulic devices and hydraulic devices such as water pressure devices, and more specifically, to a pulsation absorber that prevents noise and pulsation in hydraulic devices. This device can also be used to transport liquids.
従来の技術
この種の装置としては、筒状の圧力容器の両端
に夫々圧力液の入口と出口を設け、該筒状圧力容
器の内部にその周囲から順次筒状の弾性隔膜、及
び周囲に複数の連通孔を穿設せる内筒を夫々同心
的に設け、内筒内を圧力液の通路とし、その弾性
隔膜と内筒との間において前記連通孔を覆う位置
に弧形弁即ち円弧型板ばねを内筒に栓にて遊動結
合し、連通孔に蓋をして、前記弾性隔膜が連通孔
の中に押し込まれて損傷することを防止するもの
がある。（特許第646410号及び米国特許第3483892
号参照）
しかし、この円弧型板ばねは、前記弾性隔膜の
気体内高圧化によつて連通孔に向けて押された
際、連通孔に入り込まない抗力をもつ厚さにする
ことが必要であるが、それが厚すぎると、板ばね
が変形しにくくなり、弾性隔膜で押されても連通
孔に完全に蓋をすることができず、ここから弾性
隔膜が入り込んで、それを損傷するおそれがあ
る。そこで上述の要求を満たす厚さの板ばねを用
いることになるが、第１４図に示す様に、この板
ばね１は、内筒２の連通孔３から矢印A3方向に
流体が流れると、栓４により、支持されながら、
その両端１ａ，１ｂは、跳ね上げられた状態とな
るので、栓４周辺部の板ばね１には、大きな力が
集中してかかり、大きく変形して板ばね１を損傷
せしめる欠点がある。BACKGROUND ART In this type of device, a pressure liquid inlet and an outlet are provided at both ends of a cylindrical pressure vessel, and a cylindrical elastic diaphragm is sequentially arranged inside the cylindrical pressure vessel from the periphery, and a plurality of cylindrical elastic diaphragms are arranged around the periphery of the cylindrical pressure vessel. Inner cylinders each having a communication hole are provided concentrically, the inside of the inner cylinder is used as a passage for pressure fluid, and an arc-shaped valve, that is, an arc-shaped plate is placed between the elastic diaphragm and the inner cylinder at a position covering the communication hole. Some devices loosely connect a spring to the inner cylinder with a plug and cover the communication hole to prevent the elastic diaphragm from being pushed into the communication hole and being damaged. (Patent No. 646410 and U.S. Patent No. 3483892
However, when this arc-shaped leaf spring is pushed toward the communication hole by the high pressure in the gas of the elastic diaphragm, it is necessary to make it thick enough to prevent it from entering the communication hole. However, if it is too thick, the leaf spring will be difficult to deform, and even when pushed by the elastic diaphragm, it will not be able to completely cover the communication hole, and the elastic diaphragm may enter from here and damage it. be. Therefore, a leaf spring having a thickness that satisfies the above-mentioned requirements is used.As shown in FIG. 14, when fluid flows from the communication hole 3 of the inner cylinder 2 in the direction of arrow A3, While supported by 4,
Since both ends 1a and 1b are in a raised state, a large force is concentrated and applied to the leaf spring 1 around the stopper 4, resulting in large deformation and damage to the leaf spring 1.
本発明は、上記の点に鑑み板ばねの変形量を小
さくして、板ばねの損傷を防止することを目的と
する。 In view of the above points, an object of the present invention is to reduce the amount of deformation of the leaf spring to prevent damage to the leaf spring.
問題点を解決するための手段
この発明は、筒状の容器の内部に筒状の弾性隔
膜及び周囲に連通孔を穿設せる内筒を夫々同心的
に設け、該内筒の外面に沿つて前記連通孔の位置
に円弧状の弁部材を設けると共に該弁部材の外側
にその弁部材を覆える大きさに形成された保護部
材を重合し、それをピンにて遊動結合して脈動吸
収器において、前記弁部材を互いに重合する内側
の板ばねと外側の弾性弁体とから構成し、該弾性
弁体を前記板ばねの揺動範囲内に位置せしめると
共に該弁体の端部を、前記板ばねの端部と連通孔
の内側孔壁との間に位置せしめたことを特徴とす
る弧形弁を弁とばねを夫々の適した機能に区分し
た脈動吸収器により、前記目的を達成しようとす
るものである。Means for Solving the Problems This invention provides a cylindrical elastic diaphragm inside a cylindrical container and an inner cylinder having a communication hole around the periphery, which are respectively provided concentrically, An arc-shaped valve member is provided at the position of the communication hole, and a protective member formed in a size that can cover the valve member is superimposed on the outside of the valve member, and is loosely connected with a pin to form a pulsation absorber. The valve member is composed of an inner plate spring and an outer elastic valve body that overlap each other, and the elastic valve body is positioned within the swinging range of the plate spring, and the end of the valve body is The above object is achieved by a pulsation absorber in which an arc-shaped valve is positioned between the end of a leaf spring and the inner hole wall of a communicating hole, and the valve and spring are divided into appropriate functions. That is.
作 用
この発明は、筒状の圧力容器の筒壁中央付近に
設けた給気口から、圧力気体を、液体圧力に見合
う圧力を封入し弾性隔膜をその外側から内筒に向
つて押圧し、前記圧力容器の一端に形成した液体
入口から、他端の液体出口に向つて圧力液体を流
すと、圧力液体の一部分を内筒の連通孔を経て、
弾性隔膜の内側に流入し、その内側から圧力容器
に向つて押圧し、これらの圧力気体と液体の圧力
を弾性隔膜を介して平衡させておき、液体に脈動
等の圧力変化が生じたときは、弾性隔膜を介して
気体室内の気体を圧縮又は膨張し、その液体の脈
動等による圧力変化を吸収、緩和し、騒音、脈動
を防止するものであるが、この間において液体圧
力が大きく減少すれば気体側は膨張し、弾性隔膜
が内筒に密着する際は、その前に弾性隔膜が、保
護部材及び弁部材を押圧する。そのため、板ばね
が押圧されて、その円弧が広がる方向に変形し、
弾性弁体が変位して連通孔を閉鎖する。逆に液体
圧力が大きくなると連通孔からの流力により弁部
材が押し上げられて、板ばねが跳ね上がるが、該
板ばねはこの時、弾性弁体により押さえられ、補
強されているので、その変形量は極めて少ない。Function This invention includes pressurized gas from an air supply port provided near the center of the cylinder wall of a cylindrical pressure vessel, sealed at a pressure corresponding to the liquid pressure, and pressing an elastic diaphragm from the outside toward the inner cylinder. When the pressure liquid flows from the liquid inlet formed at one end of the pressure vessel toward the liquid outlet at the other end, a portion of the pressure liquid passes through the communication hole of the inner cylinder,
The gas flows into the inside of the elastic diaphragm and is pressed against the pressure vessel from the inside, and the pressure of these pressure gas and liquid is balanced through the elastic diaphragm, and when pressure changes such as pulsation occur in the liquid, , compresses or expands the gas in the gas chamber via an elastic diaphragm, absorbs and alleviates pressure changes caused by pulsation of the liquid, and prevents noise and pulsation. However, if the liquid pressure decreases significantly during this time, When the gas side expands and the elastic diaphragm comes into close contact with the inner cylinder, the elastic diaphragm presses the protection member and the valve member before that. Therefore, the leaf spring is pressed and deforms in the direction in which its arc widens.
The elastic valve body is displaced to close the communication hole. On the other hand, when the liquid pressure increases, the valve member is pushed up by the fluid force from the communication hole, causing the leaf spring to jump up. At this time, the leaf spring is held down and reinforced by the elastic valve body, so the amount of deformation is reduced. are extremely rare.
実施例 この発明の実施例を添付図面により説明する。Example Embodiments of the invention will be described with reference to the accompanying drawings.
筒状の圧力容器１１の一端に入口筒１２、他端
に出口筒１３を螺合し、それらの入口筒１２と出
口筒１３とで内筒１４をその両端から挾持し、
又、内筒１４の外周にゴム等の弾性材で形成した
円筒形の弾性隔膜１５を同心的に設け、その両端
のフランジ部１６を押えリング１７と前記入口筒
１２の間及び押えリング１７を出口筒１３とで
夫々挾着する。 An inlet tube 12 is screwed to one end of a cylindrical pressure vessel 11, and an outlet tube 13 is screwed to the other end, and an inner tube 14 is sandwiched between the inlet tube 12 and the outlet tube 13 from both ends.
Further, a cylindrical elastic diaphragm 15 made of an elastic material such as rubber is provided concentrically around the outer periphery of the inner cylinder 14, and the flange portions 16 at both ends are connected between the retaining ring 17 and the inlet cylinder 12, and between the retaining ring 17 and the inlet cylinder 12. They are respectively clamped with the outlet tube 13.
内筒１４の周囲に複数の連通孔２１を穿設し、
これらの連通孔２１と前記弾性隔膜１５との間に
円弧状の弁部材を設ける。この弁部材は互いに重
合する内側の板ばね２２と外側の弾性弁体２５と
から構成されている。この板ばね２２を内筒１４
に対して、その半径方向に摺動可能なピン２４で
取り付けると共に、板ばね２２と、ピン２４の頭
部２４ａとの間に、板ばね２２の長手方向即ち、
母線方向に沿つて、円弧状に弾性弁体２５を設け
る。板ばね２２は、弾力によりその中程が内筒１
４の表面から常時離間し、又、その両側縁２２
ａ，２２ｂは内筒１４の外周面に当接している。
第２図、第５図に示す様に弾性弁体２５の半径
R2は、内筒１４の半径R1に板ばね２２の肉厚ｔ
を加えた長さにほぼ等しく又、板ばね２２の半径
R3は内筒の半径R1よりも小さい。（R2≒R1＋ｔ，
R3＜R1）
板ばね２２の横の長さＬは内筒の連通孔２１の
内側孔壁即ちピン側孔壁２１ａ間の寸法L1およ
び、弾性弁体２５の横の長さｌより大きく、又、
弾性弁体２５の横の長さｌは内筒の連通孔２１の
内側孔壁２１ａ間の寸法L1より大きい。（Ｌ＞ｌ
＞L1）
板ばね２２の縦の長さＨは、弾性弁体２５の縦
の長さｈより大きく、又、その中央部の幅Ｄは、
弾性弁体２５の中央部の幅ｄより大きく、かつ幅
ｄは、ピン頭部２４ａの直径より大きい。（Ｈ＞
ｈ Ｄ＞ｄ）
板ばね２２の枝部２２ｃの幅Ｂは、弾性弁体２
５の枝部２５ｃの幅ｂより大きく、かつ、これら
の幅Ｂ，ｂは、連通孔の直径D1より大である。
（Ｂ＞ｄ＞D1）
入口筒１２から出口筒１３に向つて流れる液体
の圧力が低下し、弾性隔膜１５と圧力容器１１と
の間に形成された気体室２７内の気体の圧力の方
が大きくなつて、その弾性隔膜１５が内筒１４の
中心方向に押圧されると、ピン２４の頭部２４ａ
が弾性隔膜１５により、同方向に押圧されるの
で、弾性弁体の両側縁２５ａ，２５ｂ、板ばねの
両側縁２２ａ，２２ｂは，矢印A23方向に滑り、
全体として円弧を拡げる様に変形し、遂には、第
３図の状態から第４図の状態となり、内筒１４の
連通孔２１は板ばね２２により、完全に蓋をされ
る。 A plurality of communication holes 21 are bored around the inner cylinder 14,
An arc-shaped valve member is provided between these communication holes 21 and the elastic diaphragm 15. This valve member is composed of an inner leaf spring 22 and an outer elastic valve body 25 which overlap each other. This plate spring 22 is attached to the inner tube 14.
is attached to the plate spring 22 by a pin 24 that is slidable in the radial direction thereof, and is attached between the plate spring 22 and the head 24a of the pin 24 in the longitudinal direction of the plate spring 22, that is,
An elastic valve body 25 is provided in an arc shape along the generatrix direction. Due to elasticity, the leaf spring 22 is in the middle of the inner cylinder 1.
4, and its both side edges 22
a and 22b are in contact with the outer peripheral surface of the inner cylinder 14.
As shown in FIGS. 2 and 5, the radius of the elastic valve body 25 is
R 2 is the radius R 1 of the inner cylinder 14 and the wall thickness t of the leaf spring 22
is approximately equal to the length plus the radius of the leaf spring 22
R 3 is smaller than the radius R 1 of the inner cylinder. (R 2 ≒ R 1 +t,
R 3 <R 1 ) The lateral length L of the leaf spring 22 is determined from the dimension L 1 between the inner hole wall of the communication hole 21 of the inner cylinder, that is, the pin side hole wall 21a, and the lateral length l of the elastic valve body 25. big, again
The lateral length l of the elastic valve body 25 is larger than the dimension L 1 between the inner hole walls 21a of the communication hole 21 of the inner cylinder. (L>l
>L 1 ) The vertical length H of the leaf spring 22 is greater than the vertical length h of the elastic valve body 25, and the width D of the central portion thereof is
It is larger than the width d of the central portion of the elastic valve body 25, and the width d is larger than the diameter of the pin head 24a. (H>
h D>d) The width B of the branch portion 22c of the leaf spring 22 is the same as that of the elastic valve body 2.
5, and these widths B and b are larger than the diameter D 1 of the communicating hole.
(B>d>D 1 ) The pressure of the liquid flowing from the inlet tube 12 toward the outlet tube 13 decreases, and the pressure of the gas in the gas chamber 27 formed between the elastic diaphragm 15 and the pressure vessel 11 decreases. becomes larger and the elastic diaphragm 15 is pressed toward the center of the inner cylinder 14, the head 24a of the pin 24
are pressed in the same direction by the elastic diaphragm 15, so both side edges 25a, 25b of the elastic valve body and both side edges 22a, 22b of the leaf spring slide in the direction of arrow A23.
The whole body deforms to widen the arc, and finally changes from the state shown in FIG. 3 to the state shown in FIG. 4, and the communication hole 21 of the inner cylinder 14 is completely covered by the leaf spring 22.
次に内筒１４内の液圧が上昇し、気体室２７内
の気圧より大きくなると、液体は板ばね２２と弾
性弁体２５を押し上げ、主流は、連通孔２１から
矢印A21方向に板ばねの枝部２２ｃの側面を通つ
て流れ、弾性隔膜１５を圧力容器内面に向つて押
し拡げる。この時、板ばね２２の連通孔２１の真
上の部分２２ｄは、大きな流力を受け変形せんと
するが、板ばね２２は、弾性弁体２５に密着し、
当該部分２２ｄには、大きな反力が生ずるので、
大きく変形することはない。従つて、板ばね２２
は第４図の状態から第３図の状態を経て第２図の
状態となり、内筒１４の連通孔２１は完全に開成
される。 Next, when the liquid pressure in the inner cylinder 14 rises and becomes greater than the air pressure in the gas chamber 27, the liquid pushes up the leaf spring 22 and the elastic valve body 25, and the main flow flows from the communication hole 21 toward the direction of arrow A21 toward the leaf spring. It flows through the side surface of the branch portion 22c, pushing and expanding the elastic diaphragm 15 toward the inner surface of the pressure vessel. At this time, the portion 22d of the leaf spring 22 directly above the communication hole 21 receives a large fluid force and does not deform, but the leaf spring 22 is in close contact with the elastic valve body 25,
Since a large reaction force is generated in the portion 22d,
It will not be significantly deformed. Therefore, the leaf spring 22
The state shown in FIG. 4 changes to the state shown in FIG. 3 through the state shown in FIG. 2, and the communication hole 21 of the inner cylinder 14 is completely opened.
なお、３０は圧力液体の流路、３１は気体注入
口であり、ここから予め窒素などの気体を気体室
２７内に封入し、気体室２７内を所定の圧力にし
ておく。又、３２は、内筒１４に、先の連通孔２
１とは別に穿設されたピン孔、２４ｂはピン２４
の後部であり、ピン２４の頭部２４ａと後部２４
ｂは、ストツパの役割をもつ。３３は板ばね２２
と弾性弁体２５のピン穴である。弾性弁体２５
は、保護部材により覆れているが、第２図・第３
図及び第４図においては、説明の都合上、該保護
部材は省略されている。 Note that 30 is a pressure liquid flow path, and 31 is a gas inlet, through which a gas such as nitrogen is sealed in advance into the gas chamber 27 to maintain a predetermined pressure in the gas chamber 27. Further, 32 is the communication hole 2 in the inner cylinder 14.
A pin hole drilled separately from 1, 24b is a pin 24
The head 24a of the pin 24 and the rear part 24
b has the role of a stopper. 33 is the leaf spring 22
and a pin hole in the elastic valve body 25. Elastic valve body 25
is covered by a protective member, but in Figures 2 and 3
In the figures and FIG. 4, the protective member is omitted for convenience of explanation.
他の実施例
本発明は、上記実施例に限定されることはな
く、例えば板ばね２２は、第６図のように円弧状
の板２２Ａの中央部にピン穴３３を設け、前記板
ばね２２の枝部２２ｃに該当する箇所に長穴３４
を形成してもよい。又、第５図、第６図の板ばね
２２，２２Ａに第７図、第８図に示す様に流通穴
３５を形成すると流体は、流通孔３５を通つて流
れるので、板ばね２２，２２Ａの板面に加わる流
力が小さくなり、該板ばね２２，２２Ａの疲労は
減少される。Other Embodiments The present invention is not limited to the above-mentioned embodiments. For example, the plate spring 22 is provided with a pin hole 33 in the center of an arcuate plate 22A as shown in FIG. A long hole 34 is located at a location corresponding to the branch portion 22c of
may be formed. Furthermore, if the leaf springs 22, 22A shown in FIGS. 5 and 6 are provided with a communication hole 35 as shown in FIGS. 7 and 8, the fluid will flow through the communication hole 35, so that The flow force applied to the plate surface of the plate springs 22, 22A is reduced, and the fatigue of the plate springs 22, 22A is reduced.
弾性弁体２５は、同じ大きさのものを複数枚重
ねて用いてもよいが、第９図の様に、上層になる
に従い、横の長さを逐次ｌ，l1，l3の様に小さく
してもよい。（ｌ＞l1＞l2）
又、第１０図に示す様に弾性弁体２５の外側
に、板ばね２２および弾性弁体２５より面積の大
きい保護部材３９、例えばテフロン（登録商標）
を設けたので、弾性隔膜が、板ばね２２や弾性弁
体２５と直接接触することがない。 A plurality of elastic valve bodies 25 of the same size may be stacked, but as shown in FIG . You can make it smaller. (l>l 1 >l 2 ) Furthermore, as shown in FIG. 10, a protective member 39 having a larger area than the leaf spring 22 and the elastic valve element 25, for example, Teflon (registered trademark), is provided on the outside of the elastic valve element 25.
, the elastic diaphragm does not come into direct contact with the leaf spring 22 or the elastic valve body 25.
従つて弾性隔膜１５は、内筒１４と板ばね２２
の端部２２ａ，２２ｂとの隙間や板ばね２２と弾
性弁体２５の端部２５ａ，２５ｂとの隙間に入り
込む恐れがないので弾性隔膜１５の破損は一層防
止される。 Therefore, the elastic diaphragm 15 is connected to the inner cylinder 14 and the leaf spring 22.
Since there is no fear that the elastic diaphragm 15 will enter the gap between the end portions 22a, 22b of the leaf spring 22 and the end portions 25a, 25b of the elastic valve body 25, damage to the elastic diaphragm 15 is further prevented.
なお、第１３図に示す様に、保護部材３９に通
孔４０を形成すると、流路３０の流体の変化に伴
い、該流体が連通孔２１を出入りする場合、該流
体の一部は通孔４０を通つて流れるので、保護部
材３９による抵抗は減少される。従つて、流路３
０の流体圧力の変化が即座に弾性隔膜に伝えられ
るので、脈動、吸収を効果的に行うことができ
る。 As shown in FIG. 13, when the through hole 40 is formed in the protection member 39, when the fluid in the flow path 30 changes and the fluid enters and exits the communication hole 21, a part of the fluid flows through the through hole. 40, the resistance due to the protection member 39 is reduced. Therefore, flow path 3
Since a change in fluid pressure of 0 is immediately transmitted to the elastic diaphragm, pulsation and absorption can be performed effectively.
又、弾性弁体の端部を板ばねの端部と連通孔の
外側孔壁２１ｂとの間に位置せしめてもよい。 Alternatively, the end of the elastic valve body may be positioned between the end of the leaf spring and the outer hole wall 21b of the communication hole.
板ばねが変形する場合には、弾性弁体の端部が
支点となるが、この実施例では最も大きい流体圧
力がかかる板ばねの連通孔上部は、弾性弁体によ
り完全に覆われているので、流体圧力が分散され
ると共に、弾性弁体が覆われていない板ばねの枝
部には直接大きな流体圧力が作用しない。従つ
て、板ばねは弾性弁体により完全に補強され、第
１２図に示す波形の流力Ｐ（Kg／cm2）を繰り返し
この板ばねに加える実験では、1080000回でも破
損しないことがわかつた。 When the leaf spring deforms, the end of the elastic valve body becomes the fulcrum, but in this example, the upper part of the communication hole of the leaf spring, where the greatest fluid pressure is applied, is completely covered by the elastic valve body. , the fluid pressure is dispersed, and a large fluid pressure does not directly act on the branch of the leaf spring where the elastic valve body is not covered. Therefore, the leaf spring is completely reinforced by the elastic valve body, and in an experiment in which the waveform flow force P (Kg/cm 2 ) shown in Fig. 12 was repeatedly applied to the leaf spring, it was found that it did not break even after 1,080,000 cycles. .
第１１図は、流体の搬送にも用いられるトラン
スフアーバリヤで、本発明は、この液体ポンプに
も利用される。なお、図において、３６は、ポペ
ツト弁、３７はポペツト弁ばね、３８は接続口で
ある。 FIG. 11 shows a transfer barrier that is also used for conveying fluid, and the present invention is also used for this liquid pump. In the figure, 36 is a poppet valve, 37 is a poppet valve spring, and 38 is a connection port.
発明の効果
この発明は、以上のように弾性隔膜との間にお
ける連通孔を蓋をする位置に円弧状の板ばねを設
けると共に、板ばねの外側にその板ばねを補強す
る円弧状の弾性弁体を重合し、それらをピンにて
遊動結合し、該弁体を前記板ばねの揺動範囲内に
位置せしめるとともに、該弾性弁体の端部を、前
記弾性保護板の端部と連通孔の内側孔壁との間に
位置せしめたので、板ばねの連通孔上部附近は、
円弧状の弾性弁体により補強される。Effects of the Invention As described above, the present invention provides an arc-shaped leaf spring at a position that covers the communication hole between the elastic diaphragm and an arc-shaped elastic valve that reinforces the leaf spring on the outside of the leaf spring. The valve body is positioned within the swinging range of the leaf spring, and the end of the elastic valve body is connected to the end of the elastic protection plate through the communication hole. Since the leaf spring is located between the inner hole wall and the upper part of the communicating hole,
Reinforced by an arc-shaped elastic valve body.
従つて、連通孔を通る流体により板ばねが変形
しようとしても、弾性弁体の抵抗を受けるので、
板ばねの変形量は極めて小さいものとなる。それ
故、流路の減圧変化が繰り返されて、板ばねが変
形してもその変形量を小さくできるので板ばねの
損傷を防止することができる。ちなみに、第１２
図に示す波形の流力Ｐ（Kg／cm2）を繰り返し板ば
ねに加えると、弾性弁体のない従来例では、
80000回で栓周辺部から破損するのに対し、本発
明の板ばねでは830000回でも破損しないことが実
験により判明した。又、本発明は、弁を重合した
弾性弁体と板ばねとから構成したので、従来例の
１枚の板ばねよりなる弁に比べ、弾性弁体と、板
ばねとは、薄く成形しても、強度上の問題を生じ
ない。従つて、本発明では、板ばねと弾性弁体を
薄くできる為、従来例に比べ、板ばね及び弾性弁
体が変形しやすくなるので、弁が弾性隔膜により
押圧された時には該弁は内筒の外面に密着する。
そのため、連通孔は完全に蓋されることになるの
で、弾性隔膜が該連通孔に入り込んで損傷するこ
とはない。 Therefore, even if the leaf spring tries to deform due to the fluid passing through the communication hole, it will be resisted by the elastic valve body.
The amount of deformation of the leaf spring is extremely small. Therefore, even if the leaf spring is deformed due to repeated depressurization changes in the flow path, the amount of deformation can be reduced, and damage to the leaf spring can be prevented. By the way, the 12th
When the waveform flow force P (Kg/cm 2 ) shown in the figure is repeatedly applied to the leaf spring, in the conventional example without an elastic valve body,
It has been found through experiments that the leaf spring of the present invention does not break even after 830,000 cycles, whereas the plug periphery breaks after 80,000 cycles. Furthermore, in the present invention, since the valve is composed of a polymerized elastic valve body and a leaf spring, the elastic valve body and the leaf spring are formed thinner than the conventional valve made of a single leaf spring. However, there are no problems with strength. Therefore, in the present invention, since the leaf spring and the elastic valve body can be made thinner, the leaf spring and the elastic valve body can be more easily deformed than in the conventional example, so that when the valve is pressed by the elastic diaphragm, the valve is pressed against the inner cylinder. adheres to the outer surface of the
Therefore, since the communication hole is completely covered, the elastic diaphragm will not enter the communication hole and be damaged.
第１図は、本発明の実施例を示す縦断面図、第
２図は、第１図の−線断面図の要部拡大図、
第３図、第４図は上記実施例の作用状態を示す
図、第５図は第２図の要部を示す平面図、第６図
〜第９図は、他の実施例を示す平面図で第６図〜
第８図は、第５図の一部に相当する図、第９図は
第５図に相当する図、第１０図は、他の実施例を
示す縦断面図で、第２図に相当する図、第１１図
は他の実施例を示す縦断面図で、第１図に相当す
る図、第１２図は、本発明の実験に用いた圧力の
波形を示す図、第１３図は、他の実施例を示す平
面図、第１４図は従来例を示す図である。
１１……圧力容器、１２……入口筒、１３……
出口筒、１４……内筒、１５……弾性隔膜、２１
……連通孔、２２……板ばね、２５……弾性弁
体。
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of the sectional view taken along the line - in FIG.
3 and 4 are diagrams showing the operating state of the above embodiment, FIG. 5 is a plan view showing the main part of FIG. 2, and FIGS. 6 to 9 are plan views showing other embodiments. Figure 6~
8 is a diagram corresponding to a part of FIG. 5, FIG. 9 is a diagram corresponding to FIG. 5, and FIG. 10 is a longitudinal sectional view showing another embodiment, which corresponds to FIG. 2. 11 is a longitudinal cross-sectional view showing another embodiment, and FIG. 12 is a diagram showing the pressure waveform used in the experiment of the present invention, and FIG. 13 is a diagram corresponding to FIG. FIG. 14 is a plan view showing an embodiment of the present invention, and FIG. 14 is a diagram showing a conventional example. 11...Pressure vessel, 12...Inlet cylinder, 13...
Outlet tube, 14... Inner tube, 15... Elastic diaphragm, 21
... Communication hole, 22 ... Leaf spring, 25 ... Elastic valve body.
Claims (1)
に連通孔を穿設せる内筒を夫々同心的に設け、該
内筒の外面に沿つて前記連通孔の位置に円弧状の
弁部材を設けると共に該弁部材の外側にその弁部
材を覆える大きさに形成された保護部材を重合
し、それをピンにて遊動結合した脈動吸収器にお
いて、前記弁部材を互いに重合する内側の板ばね
と外側の弾性弁体とから構成し、該弾性弁体を前
記板ばねの揺動範囲内に位置せしめると共に該弁
体の端部を、前記板ばねの端部と連通孔の内側孔
壁との間に位置せしめたことを特徴とする弧形弁
を弁とばねを夫々の適した機能に区分した脈動吸
収器。 ２ 板ばねに、流通孔が形成されていることを特
徴とする特許請求の範囲第１項記載の弧形弁を弁
とばねを夫々の適した機能に区分した脈動吸収
器。 ３ 弾性弁体を複数枚重ねたことを特徴とする特
許請求の範囲第１項記載に弧形弁を弁とばねを
夫々の適した機能に区分した脈動吸収器。 ４ 弾性弁体が上層になるに従い小さくなること
を特徴とする特許請求の範囲第３項記載の弧形弁
体を弁とばねを夫々の適した機能に区分した脈動
吸収器。 ５ 弾性弁体がその外側に保護部材を有すること
を特徴とする特許請求の範囲第１項記載の弧形弁
を弁とばねを夫々の適した機能に区分した脈動吸
収器。[Scope of Claims] 1. A cylindrical elastic diaphragm and an inner cylinder around which a communication hole is formed are provided concentrically inside a cylindrical container, and the position of the communication hole is determined along the outer surface of the inner cylinder. In the pulsation absorber, an arc-shaped valve member is provided, a protective member formed in a size that can cover the valve member is superimposed on the outside of the valve member, and the protective member is loosely connected with a pin. It is composed of an inner leaf spring and an outer elastic valve body that overlap each other, and the elastic valve body is positioned within the swinging range of the leaf spring, and the end of the valve body is connected to the end of the leaf spring. A pulsation absorber in which an arc-shaped valve is positioned between the inner wall of a communicating hole and a valve and a spring are divided into appropriate functions. 2. A pulsation absorber in which the arc-shaped valve according to claim 1 is divided into the valve and the spring into appropriate functions, wherein a flow hole is formed in the leaf spring. 3. The pulsation absorber according to claim 1, characterized in that a plurality of elastic valve bodies are stacked one on top of the other, and the arc-shaped valve is divided into valves and springs each having a suitable function. 4. A pulsation absorber in which the arc-shaped valve body according to claim 3 is divided into valves and springs each having a suitable function, wherein the elastic valve body becomes smaller toward the upper layer. 5. A pulsation absorber comprising an arc-shaped valve according to claim 1, wherein the elastic valve body has a protective member on the outside thereof, and the valve and the spring are divided into appropriate functions.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59182382A JPS6162689A (en) | 1984-08-31 | 1984-08-31 | Pulsation absorber having circular arc valve divided into function portions suitable to valve and spring |
| GB08516843A GB2163488B (en) | 1984-07-11 | 1985-07-03 | Pulsation absorbing means |
| DE19853524133 DE3524133A1 (en) | 1984-07-11 | 1985-07-05 | PULSATION ABSORBING DEVICE |
| US06/753,103 US4633910A (en) | 1984-07-11 | 1985-07-09 | Pulsation absorbing means having one or more valve shoes divided into two parts each displays suitable function |
| FR8510570A FR2567619B1 (en) | 1984-07-11 | 1985-07-10 | DEVICE FOR ABSORBING PULSATIONS COMPRISING ONE OR MORE VALVE BODIES DIVIDED INTO TWO PARTS, EACH OF WHICH PERFORM A CONVENIENT FUNCTION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59182382A JPS6162689A (en) | 1984-08-31 | 1984-08-31 | Pulsation absorber having circular arc valve divided into function portions suitable to valve and spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6162689A JPS6162689A (en) | 1986-03-31 |
| JPH0448961B2 true JPH0448961B2 (en) | 1992-08-10 |
Family
ID=16117333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59182382A Granted JPS6162689A (en) | 1984-07-11 | 1984-08-31 | Pulsation absorber having circular arc valve divided into function portions suitable to valve and spring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6162689A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446501U (en) * | 1987-09-16 | 1989-03-22 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5240442A (en) * | 1975-09-26 | 1977-03-29 | Citizen Watch Co Ltd | Surface hardening of titanium and titanium alloy |
-
1984
- 1984-08-31 JP JP59182382A patent/JPS6162689A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6162689A (en) | 1986-03-31 |
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