JPH0325475Y2 - - Google Patents
Info
- Publication number
- JPH0325475Y2 JPH0325475Y2 JP1986195562U JP19556286U JPH0325475Y2 JP H0325475 Y2 JPH0325475 Y2 JP H0325475Y2 JP 1986195562 U JP1986195562 U JP 1986195562U JP 19556286 U JP19556286 U JP 19556286U JP H0325475 Y2 JPH0325475 Y2 JP H0325475Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- leaf spring
- tongue
- valve seat
- chemical
- 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
- 239000000126 substance Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims 9
- 210000005182 tip of the tongue Anatomy 0.000 claims 2
- 239000003518 caustics Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 239000013013 elastic material Substances 0.000 claims 1
- 210000005181 root of the tongue Anatomy 0.000 description 1
Landscapes
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
Description
第１図は本考案による薬液用切換弁の一部断面
図、第２図は同じく平面図、第３図は同じく一部
の拡大断面図、第４図は第３図のAA矢視断面図
である。
１……薬液用切換弁、２……弁機構部、２０…
…弁本体、２１……弁室、２２……上部本体、２
３……下部本体、２５……上向き出口ポート、２
６……弁座、２７……下向き出口ポート、２８…
…流入口、２９……弁座、３０……シール部材、
３１……本体部、３２……舌部、３３……舌部先
端上面、３４……舌部先端下面、３５……板ば
ね、３６……舌部付け根部、４……駆動装置、４
１……ソレノイド、４２……可動鉄心、４３……
ばね。
Fig. 1 is a partial sectional view of the switching valve for chemical liquid according to the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a partially enlarged sectional view of the same, and Fig. 4 is a sectional view taken along the AA arrow in Fig. 3. It is. 1... Chemical liquid switching valve, 2... Valve mechanism section, 20...
... Valve body, 21 ... Valve chamber, 22 ... Upper body, 2
3... Lower body, 25... Upward exit port, 2
6... Valve seat, 27... Downward outlet port, 28...
...Inflow port, 29... Valve seat, 30... Seal member,
31... Main body, 32... Tongue, 33... Top surface of tongue tip, 34... Bottom surface of tongue tip, 35... Leaf spring, 36... Root of tongue, 4... Drive device, 4
1...Solenoid, 42...Movable iron core, 43...
Spring.
Claims (1)
された２個の出口ポート、流入口及び該出口ポー
トの開口端に形成された弁座を有する弁本体と、
環状の本体部及び該本体部から半径方向内側に伸
びていて該２個の出口ポートの一方のポートの弁
座と選択的に係合可能な舌部を有するシール部材
と、一端が該本体部を通して該舌部の内部に挿入
されかつ他端がシール部材の外側に突出している
板ばねと、該板ばねの他端を動かす駆動装置とを
備えた薬液用切換弁。 【表】 【表】 上記の表では、各項目に対して同じであるも
の、（すなわち長所）に〇印、異なるもの（すな
わち短所）に×印、両方の中間にあるものに△印
を付けてある。 更に各切換弁の特徴を説明すれば次のとおりで
ある。 (1) 直動形では、プランジヤが薬液に接触してい
るため、耐食性や摺動により発生するごみが薬
液に混入する等の問題があるので、薬液の種
類、純度等に制限され使用範囲が狭い。 (2) ダイヤフラム形は、ダイヤフラムの破損や停
留した薬液のかみ込み等によるシール不良の問
題があるが、現在最も多く使用されている。 (3) ピンチバルブは、寿命が短く流量が変化しや
すい等の欠点がある。 (ハ) 考案が解決しようとする問題点 本考案が解決しようとする問題点は、薬液用の
切換弁において、使用中薬液に熱影響を与えずシ
ール性が良く、寿命が長く、腐食性の強い液に対
しても使用可能で、構造がコンパクトで、流量の
変化がなく更に薬液を汚染しないようにすること
である。 (ニ) 問題点を解決するための手段 本考案の薬液用切換弁は、弁室、該弁室を介し
て連通可能な相対して配設された２個の出口ポー
ト、流入口及び該出口ポートの開口端に形成され
た弁座を有する弁本体と、環状の本体部及び該本
体部から半径方向内側に伸びていて該２個の出口
ポートの一方のポートの弁座と選択的に係合可能
な舌部を有するシール部材と、一端が該本体部を
通して該舌部の内部に挿入されかつ他端がシール
部材の外側に突出している板ばねと、該板ばねの
他端を動かす駆動装置とを備えて構成されてい
る。 (ホ) 作用 上記構成の薬液用切換弁において、駆動装置が
動作していないときはばねで板ばねの他端が上方
に押圧されているのでこの板ばねの一端が下方に
下り、したがつてその周囲を覆う舌部が弁座と係
合してこれを開弁状態とし、流入口から入つた薬
液は弁室を介して開弁状態となつた上方への流出
口を通つて流出する。 次に駆動装置を動作させて板ばねの他端をばね
の押圧力に抗して下方に下げれば、板ばねの一端
が上方に上り、したがつてその周囲を覆う舌部が
弁座と係合して閉弁状態とし、下方の流出口は開
弁状態となつて薬液は弁室を介してこの下方の流
出口を通つて流出する。 (ヘ) 実施例 以下図面を参照して本考案の実施例について説
明する。 第１図ないし第３図において、１は本考案によ
る薬液用切換弁（以下切換弁という。）であつて、
構造を大別すれば弁本体２０を有する弁機構部２
と、駆動装置４とから構成されている。 弁本体２０は弁室２１を境として上部本体２２
と下部本体２３に二分されていて、４個のねじ２
４で一体に組み立てられている。 上部本体２２には、上下に伸びる（図におい
て）出口ポート２５及びこの出口ポートの弁室側
開口端周辺に弁座２６が形成されている。 下部本体２３には、上下に伸びる出口ポート２
７、側面に流入口２８及び出口ポートの弁室側開
口端周辺部に弁座２９が形成されていて、二つの
出口ポート２５及び２７は上下に相対し、弁室２
１を介して流入口２８とともに相互に連通してい
る。 ゴム等の弾性体からなる環状のシール部材３０
が弁室２１の側面全周にわたり取り付けられてい
て、薬液が弁本体２０の外に漏れるのを防止して
いる。第４図にも示されるように、このシール部
材３０は環状の本体部３１と、その本体部３１か
ら中心に向つて半径方向に伸びる舌部３２とを有
し、その舌部が弁室２１のほぼ中心に達し弁座２
６及び２９と係合可能な状態となつている。この
舌部３２の先端の上面３３、下面３４が弁体とし
て働き上向き及び下向き出口ポート２５及び２７
の弁座２６及び２９と係合してそれぞれの出口ポ
ート２５，２７を択一的に閉弁状態にする。 舌部３２の内部には板ばね３５の先端部が挿入
され舌部の付け根部３６を支点として挺子状に回
動可能となつている。この板ばねの他端部にはソ
レノイド４１の可動鉄心４２が上下方向移動可能
に取り付けられている。可動鉄心４２の外側に
は、ばね４３が板ばね３５の下面とソレノイド４
１の上面との間に配設されていて、ばね４３が板
ばね３５を上方に押圧している。 上記構成の切換弁１において、駆動装置４が不
作動状態のとき、すなわちソレノイド４１が通電
されていないときには、第１図及び第３図に示さ
れるように可動鉄心４２がばね４３の押圧力によ
つて上方に移動し、可動鉄心４２と係止されてい
る板ばね３５もシール部材３０上の舌部３２の本
体部３１への付け根部３６を支点として回動する
ので、板ばね３５の他端３５ａが下がり、舌部の
先端下面３４が弁体として弁座２９と係合して出
口ポート２７を閉じ状態とし、流入口２８から流
入した薬液は弁室２１を通つて出口ポート２５に
達する。 次にソレノイド４１に通電すれば、可動鉄心４
２がばね４３の押圧力に打勝つて下方に移動し、
板ばね３５は付け根部３６を支点として回動し、
板ばねの他端３５ａが上がり舌部の先端上面３３
が弁体として弁座２６と係合して出口ポート２５
を閉じ状態とし、一方出口ポート２７は開き状態
となるので薬液はここを通つて流出する。 前記の実施例においては、駆動装置４としてソ
レノイドを使用したが、ソレノイドに限らずに油
圧若しくは空気圧によるシリンダやモータ、又は
電動機等を用いてもよい。 (ト) 効果 本考案による切換弁は、板ばねの反転を利用し
た挺子式の切換弁で、構造が簡単でコンパクトで
あり、駆動装置が弁機構部から離れているので使
用中の薬液の温度上昇が低く、可動部である板ば
ねがシール部材の舌部に覆われているのでシール
性が良く、寿命が長く、駆動部（駆動装置及び板
ばね）が直接薬液に接触しないので腐食性の強い
液に対しても使用可能であり、板ばねの位置がば
ね又は駆動装置で確実に保持されているので流量
の変化がなく、更に摺動箇所がないので液を汚す
ことがない。[Claims for Utility Model Registration] A valve chamber, two outlet ports disposed facing each other that can communicate through the valve chamber, an inlet, and a valve seat formed at the open end of the outlet port. a valve body;
a seal member having an annular body and a tongue extending radially inwardly from the body and selectively engageable with a valve seat of one of the two outlet ports; A switching valve for chemical liquids, comprising: a leaf spring inserted through the tongue portion and having the other end protruding outside the sealing member; and a drive device for moving the other end of the leaf spring. [Table] [Table] In the above table, for each item, things that are the same (i.e. strengths) are marked with a circle, things that are different (i.e. weaknesses) are marked with an ×, and things that are in between both are marked with a △. There is. Further, the characteristics of each switching valve will be explained as follows. (1) In the direct acting type, since the plunger is in contact with the chemical solution, there are problems such as corrosion resistance and dirt generated by sliding getting mixed into the chemical solution, so the range of use is limited by the type and purity of the chemical solution. narrow. (2) The diaphragm type has the problem of poor sealing due to damage to the diaphragm or entrapment of the stagnant chemical, but it is currently the most commonly used type. (3) Pinch valves have disadvantages such as short lifespan and easy flow rate changes. (c) Problems to be solved by the invention The problems to be solved by the invention are to provide a switching valve for chemical liquids that does not have a thermal effect on the chemical liquids during use, has good sealing performance, has a long life, and is free from corrosive substances. It is possible to use it even for strong liquids, has a compact structure, does not change the flow rate, and does not contaminate the chemical liquid. (d) Means for Solving the Problems The switching valve for chemical liquids of the present invention includes a valve chamber, two outlet ports disposed facing each other that can communicate through the valve chamber, an inlet, and the outlet. a valve body having a valve seat formed at an open end of the port; an annular body portion extending radially inwardly from the body portion to selectively engage the valve seat of one of the two outlet ports; a sealing member having a matable tongue; a leaf spring having one end inserted into the tongue through the body and the other end protruding outside the sealing member; and a drive for moving the other end of the leaf spring. The device is configured to include a device. (E) Effect In the chemical liquid switching valve having the above configuration, when the drive device is not operating, the other end of the leaf spring is pressed upward by the spring, so one end of the leaf spring falls downward, and therefore, A tongue portion surrounding the valve seat engages with the valve seat to open the valve, and the medicinal solution entering from the inlet flows out through the valve chamber and through the upwardly opened outlet. Next, when the drive device is operated and the other end of the leaf spring is lowered against the pressing force of the spring, the one end of the leaf spring rises upward and the tongue surrounding it engages with the valve seat. At the same time, the valve is closed, and the lower outlet is opened, and the chemical solution flows out through the lower outlet through the valve chamber. (F) Embodiments Examples of the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, 1 is a chemical liquid switching valve (hereinafter referred to as a switching valve) according to the present invention,
The structure can be roughly divided into a valve mechanism section 2 having a valve body 20;
and a drive device 4. The valve body 20 has an upper body 22 with a valve chamber 21 as a boundary.
and the lower body 23, and the four screws 2
It is assembled in 4 parts. The upper body 22 is formed with an outlet port 25 extending vertically (in the figure) and a valve seat 26 around the opening end of the outlet port on the valve chamber side. The lower body 23 has an outlet port 2 extending vertically.
7. A valve seat 29 is formed around the valve chamber side opening end of the inlet port 28 and the outlet port on the side surface, and the two outlet ports 25 and 27 face each other vertically, and the valve seat 29
1 and an inlet 28 . An annular sealing member 30 made of an elastic material such as rubber
is attached to the entire circumference of the side surface of the valve chamber 21 to prevent the chemical solution from leaking out of the valve body 20. As shown in FIG. 4, this sealing member 30 has an annular main body 31 and a tongue 32 extending radially from the main body 31 toward the center. reaches almost the center of valve seat 2
6 and 29. The upper surface 33 and lower surface 34 of the tip of this tongue portion 32 act as a valve body, and the upward and downward outlet ports 25 and 27
valve seats 26 and 29 to selectively close the respective outlet ports 25, 27. The tip of a leaf spring 35 is inserted into the inside of the tongue 32 so that it can rotate like a lever about the base 36 of the tongue. A movable core 42 of a solenoid 41 is attached to the other end of this leaf spring so as to be movable in the vertical direction. On the outside of the movable iron core 42, a spring 43 is connected to the lower surface of the leaf spring 35 and the solenoid 4.
1, and the spring 43 presses the leaf spring 35 upward. In the switching valve 1 having the above configuration, when the drive device 4 is in an inactive state, that is, when the solenoid 41 is not energized, the movable iron core 42 is affected by the pressing force of the spring 43, as shown in FIGS. 1 and 3. As a result, the leaf spring 35 that moves upward and is locked to the movable iron core 42 also rotates about the root 36 of the tongue 32 on the seal member 30 to the main body 31 as a fulcrum, so that other than the leaf spring 35 The end 35a is lowered, and the bottom surface 34 of the tip of the tongue engages with the valve seat 29 as a valve body, closing the outlet port 27, and the medicinal liquid flowing from the inlet 28 passes through the valve chamber 21 and reaches the outlet port 25. . Next, if the solenoid 41 is energized, the movable iron core 4
2 overcomes the pressing force of the spring 43 and moves downward,
The leaf spring 35 rotates about the base 36 as a fulcrum,
The other end 35a of the leaf spring rises and the top surface 33 of the tip of the tongue part
engages with the valve seat 26 as a valve body to open the outlet port 25.
is in a closed state, while the outlet port 27 is in an open state, so that the chemical solution flows out through there. In the embodiments described above, a solenoid was used as the drive device 4, but the drive device 4 is not limited to a solenoid, and a hydraulic or pneumatic cylinder, motor, electric motor, or the like may be used. (g) Effects The switching valve according to the present invention is a screw-type switching valve that utilizes the reversal of a leaf spring, and has a simple and compact structure.Since the driving device is located away from the valve mechanism, it is possible to reduce the flow of chemical liquid during use. Temperature rise is low, the leaf spring, which is a movable part, is covered by the tongue of the sealing member, so it has good sealing properties and has a long life, and the drive part (drive device and leaf spring) does not come into direct contact with the chemical, so it is not corrosive. It can be used even with strong liquids, and since the position of the leaf spring is securely held by the spring or drive device, there is no change in flow rate, and since there are no sliding parts, the liquid will not be contaminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986195562U JPH0325475Y2 (en) | 1986-12-19 | 1986-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986195562U JPH0325475Y2 (en) | 1986-12-19 | 1986-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6399082U JPS6399082U (en) | 1988-06-27 |
| JPH0325475Y2 true JPH0325475Y2 (en) | 1991-06-03 |
Family
ID=31153563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986195562U Expired JPH0325475Y2 (en) | 1986-12-19 | 1986-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325475Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005349387A (en) * | 2004-04-23 | 2005-12-22 | Nordson Corp | Dispenser having rotary actuator assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162775U (en) * | 1984-04-09 | 1985-10-29 | 石川島播磨重工業株式会社 | non-return valve |
-
1986
- 1986-12-19 JP JP1986195562U patent/JPH0325475Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005349387A (en) * | 2004-04-23 | 2005-12-22 | Nordson Corp | Dispenser having rotary actuator assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6399082U (en) | 1988-06-27 |
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