JPH031667Y2 - - Google Patents
Info
- Publication number
- JPH031667Y2 JPH031667Y2 JP11723486U JP11723486U JPH031667Y2 JP H031667 Y2 JPH031667 Y2 JP H031667Y2 JP 11723486 U JP11723486 U JP 11723486U JP 11723486 U JP11723486 U JP 11723486U JP H031667 Y2 JPH031667 Y2 JP H031667Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- casing
- outlet
- valve casing
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
本考案は湯水混合水栓の冷水供給系統に設ける
に好適な逆止弁に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a check valve suitable for installation in a cold water supply system of a hot/cold water mixing faucet.
[従来の技術]
湯水混合水栓においては、温水供給管から供給
される温水と、冷水供給管から供給される冷水と
が混合弁を介して混合室に流入して混合可能とさ
れている。この湯水混合弁の一種として、摺動自
在に重ね合わされた1対のセラミツクデイスクを
備えたセラミツクデイスクタイプのものが用いら
れている。このセラミツクデイスクタイプの湯水
混合弁は、一方の固定側セラミツクデイスクに温
水流入口、冷水流入口及び混合水流出口を設けて
おくと共に、他方の可動側セラミツクスデイスク
に、これら開口を連通可能な凹部を設けておき、
該凹部と前記各開口との重なり合う開口面積を変
化させるように可動側セラミツクデイスクを摺動
させて混合水温の調整や、流出量の調整を行うも
のである。[Prior Art] In a hot water mixing faucet, hot water supplied from a hot water supply pipe and cold water supplied from a cold water supply pipe flow into a mixing chamber via a mixing valve and can be mixed. As a type of hot water mixing valve, a ceramic disk type valve is used, which includes a pair of ceramic disks that are slidably stacked on top of each other. In this ceramic disk type hot water mixing valve, one fixed ceramic disk is provided with a hot water inlet, a cold water inlet, and a mixed water outlet, and the other movable ceramic disk is provided with a recess that allows these openings to communicate. Set it up,
The movable ceramic disk is slid to change the overlapping area of the recess and each of the openings to adjust the temperature of the mixed water and the amount of outflow.
しかして、このような湯水混合水栓において
は、温水側通路及び冷水側通路にそれぞれ逆止弁
を設け、温水供給管及び冷水供給管への逆流を防
止するようにしている。 Therefore, in such a hot water mixing faucet, a check valve is provided in each of the hot water side passage and the cold water side passage to prevent backflow to the hot water supply pipe and the cold water supply pipe.
[考案が解決しようとする問題点]
よく知られているように、逆止弁は順流方向へ
の流通のみを許容し、逆流方向への流通を遮断す
る作用をなすものであるが、従来の逆止弁を湯水
混合水栓の冷水側通路に設けた場合、次のような
不具合があつた。[Problems to be solved by the invention] As is well known, a check valve only allows flow in the forward direction and has the function of blocking flow in the reverse direction. When a check valve was installed in the cold water side passage of a hot/cold water mixing faucet, the following problems occurred.
即ち、冷水を混合室に流通させた後、温水のみ
を混合室に流入させると、湯水混合弁と冷水側逆
止弁との間の冷水通路が密封状態となるのである
が、この密封状態の冷水通路に温水の熱が伝わ
り、この冷水が熱膨張する。そして、この膨張圧
が湯水混合弁に作用し、その弁体の動きを重くす
る。例えば、セラミツクデイスクタイプの湯水混
合弁においては、セラミツクデイスク同士が強く
押圧、密着し、ハンドル操作が重くなる。 In other words, when only hot water is allowed to flow into the mixing chamber after cold water has been passed through the mixing chamber, the cold water passage between the hot water mixing valve and the cold water side check valve becomes sealed. The heat of the hot water is transferred to the cold water passage, causing the cold water to thermally expand. This expansion pressure then acts on the hot water mixing valve, making the movement of the valve body heavier. For example, in a ceramic disk type hot water mixing valve, the ceramic disks press strongly against each other and come into close contact with each other, making it difficult to operate the handle.
[問題点を解決するための手段]
本考案の逆止弁は、一端側に流入口を有し、他
端側に流出口を有する筒状の弁ケーシングと、こ
の弁ケーシング内にケーシング軸線方向に進退可
能に挿設された可撓性ゴム製の弁体と、弁ケーシ
ングの流出口側に設けられた弁座部材とから主と
して構成される。[Means for Solving the Problems] The check valve of the present invention includes a cylindrical valve casing having an inlet at one end and an outlet at the other end, and a cylindrical valve casing in the axial direction of the casing. The valve body is mainly composed of a flexible rubber valve body inserted into the valve body so as to be movable forward and backward, and a valve seat member provided on the outlet side of the valve casing.
上記可撓性ゴム製の弁体は、その外周面が弁ケ
ーシング内周面に密着可能な径を有する略傘形断
面形状のものである。この弁体は、その外周部が
弁ケーシング流出口側に向つて拡径する形状のの
可撓部となつており、またこの弁体の流出口側の
面の中央には円錐状突部が形成される。 The flexible rubber valve body has a substantially umbrella-shaped cross-section and has a diameter that allows its outer circumferential surface to come into close contact with the inner circumferential surface of the valve casing. The outer circumference of this valve body is a flexible part whose diameter increases toward the outlet side of the valve casing, and there is a conical protrusion in the center of the face of the valve body on the outlet side. It is formed.
また、上記弁座部材は、該弁体の円錐状突部が
着座するコーン状シート部が設けられると共に、
このシート部の周囲に、弁座部材の上流側と下流
側とを連通する通水部が設けられる。 Further, the valve seat member is provided with a cone-shaped seat portion on which the conical protrusion of the valve body is seated, and
A water passage portion is provided around the seat portion to communicate the upstream side and the downstream side of the valve seat member.
[作用]
本考案の逆止弁において、順流方向に水圧がか
かると、可撓性ゴムよりなる傘型の弁体の周縁部
が順流方向に撓むように変形し、通水用の間隙が
ケーシング内面との間に形成され、通水が行われ
る。[Function] In the check valve of the present invention, when water pressure is applied in the forward flow direction, the peripheral edge of the umbrella-shaped valve body made of flexible rubber deforms in the forward flow direction, and the gap for water passage closes to the inner surface of the casing. It is formed between the two, and water passes through it.
逆に、逆流方向の通水圧がかかると、弁体の周
縁部がケーシング内周面に密着し、逆流を阻止す
る。更に、この逆流防止状態において、弁体より
も下流側の圧力が高まると、弁体外周縁部がケー
シング内周面に密着したまま弁体が上流側に後退
し、この高い下流側の圧力の低下を図ることが可
能である。 On the other hand, when water flow pressure in the reverse flow direction is applied, the peripheral edge of the valve body comes into close contact with the inner circumferential surface of the casing, preventing reverse flow. Furthermore, in this backflow prevention state, if the pressure on the downstream side of the valve body increases, the valve body retreats upstream while the outer peripheral edge of the valve body remains in close contact with the inner circumferential surface of the casing, and this high pressure on the downstream side decreases. It is possible to achieve this.
[実施例] 以下図面を参照して実施例について説明する。[Example] Examples will be described below with reference to the drawings.
第1図は本考案の実施例に係る逆止弁の縦断面
図、第2図及び第3図は弁体の形状説明図であ
る。符号10は弁ケーシングであつて、一端側に
流入口12を有し、他端側に流出口14を有する
円筒形状のものである。この流入口12には、ユ
ニオンナツト16及びジヨイント18を介して冷
水供給管20が接続されている。また弁ケーシン
グ10の端面と前記ジヨイント18のフランジ部
18aとの間にはゴムパツキン22が介在されて
いる。 FIG. 1 is a longitudinal sectional view of a check valve according to an embodiment of the present invention, and FIGS. 2 and 3 are explanatory diagrams of the shape of a valve body. Reference numeral 10 denotes a valve casing, which has a cylindrical shape and has an inlet 12 at one end and an outlet 14 at the other end. A cold water supply pipe 20 is connected to this inlet 12 via a union nut 16 and a joint 18 . Further, a rubber packing 22 is interposed between the end face of the valve casing 10 and the flange portion 18a of the joint 18.
弁ケーシング10の流出口14には弁座部材2
4が螺着されている。この弁座部材24はリング
部24a、シート部24b、リング部24aとシ
ート部24bとを連結する連結部24cを備えて
いる。リング部24aはその外周面に雄ねじが刻
設され、弁ケーシング10の内周面に形成された
雌ねじと螺合している。シート部24bは流出口
側に向つて窄まる形状のコーン型のものであり、
かつシート部24bの中心部には連通孔24dが
形成されている。連結部24cは、リング部24
aの内周面の例えば3方向から半径方向に延出さ
れ、シート部24bを支持している。 A valve seat member 2 is provided at the outlet 14 of the valve casing 10.
4 is screwed on. The valve seat member 24 includes a ring portion 24a, a seat portion 24b, and a connecting portion 24c that connects the ring portion 24a and the seat portion 24b. The ring portion 24 a has a male thread carved on its outer circumferential surface, and is screwed into a female thread formed on the inner circumferential surface of the valve casing 10 . The seat portion 24b is cone-shaped and narrows toward the outlet side.
A communication hole 24d is formed in the center of the seat portion 24b. The connecting portion 24c is connected to the ring portion 24
It extends in the radial direction from, for example, three directions on the inner circumferential surface of a, and supports the seat portion 24b.
符号26は可撓性ゴム製の弁体であつて、第
2,3図に示す如く略傘型の断面形状のものであ
る。即ち、その外周部分には流出口14側に向つ
て次第に拡径する形状の可撓部26aが形成さ
れ、中央部分の流入口12側は該流入口12に向
つて凸となる山型部26bが形成されている。ま
たこの山型部26bの裏面側(流出口14側)
は、前記コーン状のシート部24bに着座可能な
円錐状突部26cとなつている。 Reference numeral 26 denotes a valve body made of flexible rubber, which has a substantially umbrella-shaped cross-section as shown in FIGS. 2 and 3. That is, a flexible portion 26a whose diameter gradually increases toward the outlet 14 side is formed on its outer peripheral portion, and a chevron-shaped portion 26b that is convex toward the inlet 12 is formed at the center portion on the inlet 12 side. is formed. Also, the back side of this chevron-shaped portion 26b (outflow port 14 side)
is a conical protrusion 26c that can be seated on the cone-shaped seat portion 24b.
このように構成された逆止弁において、冷水供
給管20から給水圧がかかると、可撓部26aが
窄まるように撓み、該可撓部26aと弁ケーシン
グ10内周面等の間に間隙が形成されて水が流入
口12から流出口14へ向つて流れる。逆に、流
出口14側から逆流圧がかかると、可撓部26a
の外周面が弁ケーシング10の内周面に密着し、
逆流を防止する。更に、この逆流防止状態におい
て弁体26よりも下流側の圧力が高まると、可撓
部26aの外周面が弁ケーシング10内周面に密
着したまま弁体26が流入口12側へ後退し、該
下流側の圧力の低下を図ることができる。 In the check valve configured as described above, when water supply pressure is applied from the cold water supply pipe 20, the flexible portion 26a is bent to narrow, and a gap is formed between the flexible portion 26a and the inner peripheral surface of the valve casing 10, etc. is formed and water flows from the inlet 12 to the outlet 14. Conversely, when backflow pressure is applied from the outlet 14 side, the flexible portion 26a
The outer peripheral surface of the valve casing 10 is in close contact with the inner peripheral surface of the valve casing 10,
Prevent backflow. Furthermore, when the pressure downstream of the valve body 26 increases in this backflow prevention state, the valve body 26 retreats toward the inlet 12 while the outer peripheral surface of the flexible portion 26a remains in close contact with the inner peripheral surface of the valve casing 10. It is possible to reduce the pressure on the downstream side.
従つて、この逆止弁を湯水混合水栓の冷却水供
給系統に挿着した場合、該逆止弁と湯水混合弁と
の間の冷水通路における水圧増大を回避すること
ができ、該湯水混合弁の操作力を増大させること
が防止される。 Therefore, when this check valve is inserted into the cooling water supply system of a hot water mixing faucet, an increase in water pressure in the cold water passage between the check valve and the hot water mixing valve can be avoided, and the hot water mixing An increase in the operating force of the valve is prevented.
なお、特に限定されるものではないが、本考案
で用いられる弁体の好適な形状を示す各部分の角
度を第3図に記入する。 Incidentally, although not particularly limited, the angles of each part showing the preferred shape of the valve body used in the present invention are shown in FIG. 3.
[考案の効果]
以上の通り、本考案の逆止弁は、弁体よりも下
流側の圧力が高まると、弁体が上流側に後退し、
該下流側圧力の低下が図れる。[Effects of the invention] As described above, in the check valve of the invention, when the pressure on the downstream side of the valve element increases, the valve element retreats to the upstream side.
The downstream pressure can be reduced.
従つて、本考案の逆止弁を湯水混合水栓の冷却
水供給系統に設けると、冷水又は低温混合水流通
状態から高温水のみの流通に切り換えた場合、ハ
ンドルが重くなることが防止され、常時軽快なハ
ンドル操作が可能となる。 Therefore, when the check valve of the present invention is installed in the cooling water supply system of a hot and cold water mixing faucet, when switching from the flow of cold water or low-temperature mixed water to the flow of only high-temperature water, the handle will be prevented from becoming heavy. The handle can be operated easily at all times.
第1図は本考案の実施例に係る逆止弁の縦断面
図、第2図は弁体26の平面図、第3図は第2図
−線断面図である。
10……弁ケーシング、12……流入口、14
……流出口、24……弁座部材、26……弁体。
FIG. 1 is a longitudinal sectional view of a check valve according to an embodiment of the present invention, FIG. 2 is a plan view of a valve body 26, and FIG. 3 is a sectional view taken along the line taken in FIG. 2. 10...Valve casing, 12...Inflow port, 14
...outlet, 24...valve seat member, 26...valve body.
Claims (1)
筒状の弁ケーシングと、該弁ケーシング内にケー
シングの軸線方向へ進退可能に挿設された、その
外周面が弁ケーシング内周面に密着可能な径を有
する可撓性ゴム製の弁体と、該弁ケーシングの排
出口側に設けられた弁座部材と、を有し、 前記弁体は、その外周部分に、弁ケーシング流
出口側へ向つて拡径する形状の可撓部が形成され
ると共に、その流出口側の面の中央には円錐状突
部が形成されており、 前記弁座部材は、該弁体の円錐状突部が着座す
るコーン状シート部及び、該シート部の周囲に設
けられた弁座部材の上流側と下流側とを連通する
通水部を備えていることを特徴とする逆止弁。[Claims for Utility Model Registration] A cylindrical valve casing having an inlet at one end and an outlet at the other end; The valve body includes a flexible rubber valve body whose outer circumferential surface has a diameter that allows it to come into close contact with the inner circumferential surface of a valve casing, and a valve seat member provided on the discharge port side of the valve casing. A flexible portion having a diameter increasing toward the outlet side of the valve casing is formed on the outer peripheral portion thereof, and a conical protrusion is formed in the center of the surface on the outlet side, and the valve seat The member includes a cone-shaped seat portion on which the conical protrusion of the valve body is seated, and a water passage portion provided around the seat portion that communicates the upstream side and the downstream side of the valve seat member. A check valve featuring:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11723486U JPH031667Y2 (en) | 1986-07-30 | 1986-07-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11723486U JPH031667Y2 (en) | 1986-07-30 | 1986-07-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6324467U JPS6324467U (en) | 1988-02-18 |
JPH031667Y2 true JPH031667Y2 (en) | 1991-01-18 |
Family
ID=31002558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11723486U Expired JPH031667Y2 (en) | 1986-07-30 | 1986-07-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH031667Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6046856B1 (en) * | 2015-03-10 | 2016-12-21 | 株式会社イワキ | Volumetric pump |
-
1986
- 1986-07-30 JP JP11723486U patent/JPH031667Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6324467U (en) | 1988-02-18 |
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