JP2003014144A - Device for switching flow direction of fluid - Google Patents
Device for switching flow direction of fluidInfo
- Publication number
- JP2003014144A JP2003014144A JP2001199960A JP2001199960A JP2003014144A JP 2003014144 A JP2003014144 A JP 2003014144A JP 2001199960 A JP2001199960 A JP 2001199960A JP 2001199960 A JP2001199960 A JP 2001199960A JP 2003014144 A JP2003014144 A JP 2003014144A
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- Prior art keywords
- valve
- opening
- inlet
- outlet
- fluid
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内部に流体の循環
路を備えた流体使用機器に接続して、この循環路におけ
る流体の流通方向を正方向と逆方向に切り換える流体の
流通方向切換装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid flow direction switching device which is connected to a fluid-using device having a fluid flow path therein and which switches the flow direction of the fluid in the flow path between a forward direction and a reverse direction. Regarding
【０００２】[0002]
【従来の技術】水や油等の流体の循環路を備えた流体使
用機器は、冷却水の循環路を備えた鋳型や、各種の熱交
換器等多岐にわたり、これら流体使用機器では、流体の
入口から出口に向けて流体が循環されている。しかし、
この流体使用機器にあっては、流体使用機器内での流体
の流れ方向が入口から出口に向けて一方向のみとなって
いたために、循環路内における継手の段差部分や他の屈
曲部分においてスケール等の不純物が付着し、これが堆
積されて循環路を狭くする等の問題点があった。2. Description of the Related Art There are a wide variety of fluid-using devices equipped with a circulation path for fluids such as water and oil, such as molds equipped with a cooling water circulation path and various heat exchangers. Fluid is circulated from the inlet to the outlet. But,
In this device using fluid, the flow direction of the fluid in the device using fluid was only one direction from the inlet to the outlet. However, there is a problem in that impurities such as the above adhere and are deposited to narrow the circulation path.
【０００３】また、流体使用機器が鋳型等の加熱される
機器であって、その内部にこれを冷却するための冷却水
循環路が形成されている場合には、冷却水の入口近傍は
充分に冷却されているものの、出口近くになるにしたが
って冷却水が順次加熱されるために充分な冷却ができな
いという問題もあった。また、流体使用機器が循環され
水によって逆に加熱される場合も、入口近くは充分に加
熱されるが出口近くは加熱が不十分になるという問題が
あった。Further, when the fluid-using device is a device such as a mold to be heated and a cooling water circulation path for cooling the device is formed therein, the vicinity of the cooling water inlet is sufficiently cooled. However, there is also a problem that cooling water cannot be sufficiently cooled because the cooling water is sequentially heated toward the outlet. Further, when the fluid-using device is circulated and heated inversely by water, there is a problem that heating is sufficiently performed near the inlet but insufficient near the outlet.
【０００４】そこで、このような問題点を解決するため
に、例えば、図８に示す循環路における水の流通方向を
正方向と逆方向に切り換える水流切換装置が提案されて
いる（実公平６−７２３４号公報参照）。この水流切換
装置１０１は、弁本体１１１に、水の供給源１０７にポ
ンプ１０８を介して連続する入口１０２と、水の排出先
（濾過器１０９を介して水の供給源１０７に戻る）に連
続する出口１０３と、これら入口１０２及び出口１０３
に連通し且つ水使用機器１０６の循環路１０６ａに連続
する第１出入口１０４及び第２出入口１０５とを備えて
いる。Therefore, in order to solve such a problem, for example, a water flow switching device has been proposed which switches the flow direction of water in the circulation path to the forward direction and the reverse direction (actual fairness 6-). No. 7234). This water flow switching device 101 is connected to a valve main body 111, an inlet 102 that is continuous with a water supply source 107 via a pump 108, and a water discharge destination (returns to the water supply source 107 via a filter 109). Exit 103, and these entrance 102 and exit 103
And a first inlet / outlet 104 and a second inlet / outlet 105 which are continuous with the circulation path 106a of the water using device 106.
【０００５】そして、入口１０２と第１出入口１０４と
の間には第１開閉弁１３１が設けられ、第１出入口１０
４と出口１０３との間には第２開閉弁１３２が設けら
れ、入口１０２と第２出入口１０５との間には第３開閉
弁１３３が設けられ、さらに第２出入口１０５と出口１
０３との間には第４開閉弁１３４が設けられている。こ
こで、第１開閉弁１３１及び第４開閉弁１３４と、第２
開閉弁１３２及び第３開閉弁１３３との開閉は相互に逆
位相となっており、且つ各開閉弁１３１〜１３４の開閉
動作は同期されている。かかる逆位相での開閉動作は、
開閉切換機構１４０によってなされるようになってい
る。A first opening / closing valve 131 is provided between the inlet 102 and the first inlet / outlet 104, and the first inlet / outlet 10
4 and the outlet 103, a second opening / closing valve 132 is provided, a third opening / closing valve 133 is provided between the inlet 102 and the second inlet / outlet 105, and the second inlet / outlet 105 and the outlet 1 are provided.
A fourth opening / closing valve 134 is provided between the second opening 03 and the third opening 03. Here, the first on-off valve 131 and the fourth on-off valve 134, and the second
The opening and closing of the opening / closing valve 132 and the third opening / closing valve 133 are in opposite phases to each other, and the opening / closing operations of the respective opening / closing valves 131 to 134 are synchronized. The opening / closing operation in the opposite phase is
The open / close switching mechanism 140 is used.
【０００６】しかして、供給源１０７から水流切換装置
１０１の入口１０２に入った水は、第１開閉弁１３１と
第４開閉弁１３４とが開き、且つ第２開閉弁１３２と第
３開閉弁１３３とが閉じているときには、正流モードと
なり、第１出入口１０４から出て水使用機器１０６の循
環路１０６ａ内を矢印ａ方向に循環して第２出入口１０
５に入り、出口１０３から出て濾過器１０９を経て供給
源１０７に至る。一方、これとは逆に、第１開閉弁１３
１と第４開閉弁１３４とが閉じ、且つ第２開閉弁１３２
と第３開閉弁１３３とが開いているときには、逆流モー
ドとなり、供給源１０７から水流切換装置１０１の入口
１０２に入った水は、第２出入口１０５から出て水使用
機器１０６の循環路１０６ａ内を矢印ｂ方向に循環して
第１出入口１０４に入り、出口１０３から出て濾過器１
０９を経て供給源１０７に至る。Therefore, the water that has entered the inlet 102 of the water flow switching device 101 from the supply source 107 opens the first opening / closing valve 131 and the fourth opening / closing valve 134, and the second opening / closing valve 132 and the third opening / closing valve 133. When and are closed, the flow is in the forward flow mode, and the second outlet 10 is circulated in the circulation path 106a of the water using device 106 by exiting from the first inlet 104.
5 and exits from the outlet 103 to the supply source 107 via the filter 109. On the other hand, conversely to this, the first opening / closing valve 13
1 and the fourth on-off valve 134 are closed, and the second on-off valve 132
And the third on-off valve 133 are open, the reverse flow mode is set, and the water that has entered the inlet 102 of the water flow switching device 101 from the supply source 107 exits the second inlet / outlet 105 and is in the circulation path 106a of the water using device 106. Circulates in the direction of arrow b into the first inlet / outlet 104 and exits from the outlet 103.
The supply source 107 is reached via 09.
【０００７】従って、開閉切換機構１４０による各開閉
弁の切り換えによって水使用機器１０６の循環路１０６
ａ内での循環方向が逆転するようになっている。これに
より、水使用機器１０６の循環路１０６ａ内に堆積した
スケール等の不純物は逆方向の水流によって除去されて
外部へ排出され、循環路１０６ａ内の狭窄や閉鎖を防止
することができる。また、水使用機器１０６が水によっ
て冷却又は加熱されるものである場合にも、循環路１０
６ａにおいて入口と出口が反覆して逆転されることによ
って循環路１０６ａの温度が均一になり、水使用機器１
０６の冷却又は加熱を均一に行うことができる。Therefore, the circulation path 106 of the water-using equipment 106 is changed by switching the respective open / close valves by the open / close switching mechanism 140.
The circulation direction in a is reversed. As a result, impurities such as scale accumulated in the circulation path 106a of the water using device 106 are removed by the water flow in the reverse direction and discharged to the outside, so that the constriction or closing of the circulation path 106a can be prevented. Also, when the water-using device 106 is cooled or heated by water, the circulation path 10
At 6a, the inlet and the outlet are turned upside down to be reversed, so that the temperature of the circulation path 106a becomes uniform and the water using device 1
The cooling or heating of 06 can be performed uniformly.
【０００８】ここで、水流切換装置１０１の具体的構成
について図８（Ｂ）を参照して説明すると、弁本体１１
１は、一端に入口１０２を形成した第１本体部１１１ａ
と、一端に出口１０３を形成した第２本体部１１１ｂ
と、第１本体部１１１ａ及び第２本体部１１１ｂ間に配
置された第３本体部１１１ｃとの三層構造で構成されて
いる。そして、第１本体部１１１ａには、入口１０２か
ら他端側に向けて横孔１１２が形成され、第２本体部１
１１ｂには、出口１０３から他端側に向けて横孔１１３
が形成され、これら横孔１１２，１１３間を第３本体部
１１１ｃに形成された、相互に平行な２本の縦孔１１
４，１１５で連通している。そして、これら縦孔１１
４，１１５には、第１出入口１０４及び第２出入口１０
５のそれぞれが個別に連通している。Here, the specific structure of the water flow switching device 101 will be described with reference to FIG. 8 (B).
1 is a first main body portion 111a having an inlet 102 formed at one end
And a second main body portion 111b having an outlet 103 formed at one end
And a third body 111c arranged between the first body 111a and the second body 111b. Then, a lateral hole 112 is formed in the first main body portion 111a from the inlet 102 toward the other end side.
11b has a lateral hole 113 from the outlet 103 toward the other end.
And two vertical holes 11 parallel to each other are formed in the third main body portion 111c between the horizontal holes 112 and 113.
It communicates with 4,115. And these vertical holes 11
4, 115, the first doorway 104 and the second doorway 10
Each of the 5 communicates individually.
【０００９】横孔１１２と縦孔１１４，１１５のうち一
方の縦孔１１４との間には、前記第１開閉弁１３１が設
けられ、この第１開閉弁１３１は、弁本体１１１の第３
本体部１１１ｃに固定されると共に縦孔１１４の内径と
略同一の内径を有する弁座１３１ｂと、弁座１３１ｂに
対し進退する弁体１３１ａとで構成されている。弁体１
３１ａは、弁座１３１ｂに対して着座可能な外径を有す
る座部１３１ｃを有している。また、前記縦孔１１４と
横孔１１３との間には、前記第２開閉弁１３２が設けら
れ、この第１開閉弁１３２は、弁本体１１１の第３本体
部１１１ｃに固定されると共に縦孔１１４の内径と略同
一の内径を有する弁座１３２ｂと、弁座１３２ｂに対し
進退する弁体１３２ａとで構成されている。弁体１３２
ａも、弁座１３２ｂに対して着座可能な外径を有する座
部１３２ｃを有している。The first opening / closing valve 131 is provided between the horizontal hole 112 and one of the vertical holes 114, 115. The first opening / closing valve 131 is the third opening of the valve body 111.
The valve seat 131b is fixed to the main body portion 111c and has an inner diameter substantially the same as the inner diameter of the vertical hole 114, and a valve body 131a that moves forward and backward with respect to the valve seat 131b. Disc 1
31a has a seat portion 131c having an outer diameter that allows it to be seated on the valve seat 131b. Further, the second opening / closing valve 132 is provided between the vertical hole 114 and the horizontal hole 113, and the first opening / closing valve 132 is fixed to the third main body portion 111c of the valve main body 111 and also has a vertical hole. The valve seat 132b has an inner diameter that is substantially the same as the inner diameter of 114, and a valve element 132a that advances and retracts with respect to the valve seat 132b. Valve body 132
The a also has a seat portion 132c having an outer diameter capable of being seated on the valve seat 132b.
【００１０】また、横孔１１２と縦孔１１４，１１５の
うち他方の縦孔１１５との間には、前記第３開閉弁１３
３が設けられ、この第３開閉弁１３３は、弁本体１１１
の第３本体部１１１ｃに固定されると共に縦孔１１５の
内径と略同一の内径を有する弁座１３３ｂと、弁座１３
３ｂに対し進退する弁体１３３ａとで構成されている。
弁体１３３ａは、弁座１３３ｂに対して着座可能な外径
を有する座部１３３ｃを有している。また、前記縦孔１
１５と横孔１１３との間には、前記第４開閉弁１３４が
設けられ、この第４開閉弁１３４は、弁本体１１１の第
３本体部１１１ｃに固定されると共に縦孔１１５の内径
と略同一の内径を有する弁座１３４ｂと、弁座１３４ｂ
に対し進退する弁体１３４ａとで構成されている。弁体
１３４ａも、弁座１３４ｂに対して着座可能な外径を有
する座部１３４ｃを有している。The third opening / closing valve 13 is provided between the horizontal hole 112 and the other vertical hole 115 of the vertical holes 114 and 115.
3 is provided, and the third opening / closing valve 133 is
A valve seat 133b fixed to the third main body portion 111c and having an inner diameter substantially the same as the inner diameter of the vertical hole 115;
3b and a valve element 133a that moves back and forth.
The valve body 133a has a seat portion 133c having an outer diameter capable of being seated on the valve seat 133b. Also, the vertical hole 1
The fourth opening / closing valve 134 is provided between the vertical hole 115 and the lateral hole 113. The fourth opening / closing valve 134 is fixed to the third main body portion 111c of the valve main body 111 and has an inner diameter substantially equal to that of the vertical hole 115. A valve seat 134b having the same inner diameter and a valve seat 134b
And a valve element 134a that moves forward and backward. The valve body 134a also has a seat portion 134c having an outer diameter capable of being seated on the valve seat 134b.
【００１１】第１開閉弁１３１を構成する弁体１３１ａ
及び第２開閉弁１３２を構成する弁体１３２ａは昇降軸
１２１に固定され、この昇降軸１２１の上昇時には第２
開閉弁１３２が閉じて第１開閉弁１３１が開き、また昇
降軸１２１の下降時には第２開閉弁１３２が開いて第１
開閉弁１３１が閉じるようになっている。一方、第３開
閉弁１３３を構成する弁体１３３ａ及び第４開閉弁１３
４を構成する弁体１３４ａは昇降軸１２２に固定され、
この昇降軸１２２の上昇時には第４開閉弁１３４が閉じ
て第３開閉弁１３３が開き、また昇降軸１２２の下降時
には第４開閉弁１３４が開いて第３開閉弁１３３が閉じ
るようになっている。A valve body 131a constituting the first on-off valve 131
The valve body 132a that constitutes the second opening / closing valve 132 is fixed to the elevating shaft 121.
The opening / closing valve 132 is closed to open the first opening / closing valve 131, and when the lifting shaft 121 is lowered, the second opening / closing valve 132 is opened to open the first opening / closing valve 132.
The on-off valve 131 is adapted to close. On the other hand, the valve body 133a and the fourth on-off valve 13 which form the third on-off valve 133.
The valve element 134a that constitutes No. 4 is fixed to the lifting shaft 122,
The fourth opening / closing valve 134 is closed and the third opening / closing valve 133 is opened when the lifting shaft 122 is raised, and the fourth opening / closing valve 134 is opened and the third opening / closing valve 133 is closed when the lifting shaft 122 is lowered. .
【００１２】そして、昇降軸１２１と昇降軸１２２の昇
降は、互いに逆位相となっている。即ち、昇降軸１２１
が上昇したときに昇降軸１２２が下降し、昇降軸１２１
が下降したときに昇降軸１２２が上昇するようになって
いる。The elevating shaft 121 and the elevating shaft 122 are moved up and down in opposite phases. That is, the lifting shaft 121
And the vertical axis 122 moves downward when the vertical axis
The elevating shaft 122 moves up when is lowered.
【００１３】[0013]
【発明が解決しようとする課題】しかしながら、この従
来の水流切換装置１０１にあっては、以下の問題点があ
った。即ち、第１開閉弁１３１、第２開閉弁１３２、第
３開閉弁１３３、及び第４開閉弁１３４のいずれにあっ
ても、昇降軸１２１，１２２に固定された弁体１３１
ａ，１３２ａ，１３３ａ，１３４ａが弁座１３１ｂ，１
３２ｂ，１３３ｂ，１３４ｂに対して着座可能な外径を
有する座部１３１ｃ，１３２ｃ，１３３ｃ，１３４ｃを
有しているため、弁本体１１１を構成する第１本体部１
１１ａ、第２本体部１１１ｂ、及び第３本体部１１１ｃ
を一体に構成して、弁体１３１ａ，１３２ａ，１３３
ａ，１３４ａを固定した昇降軸１２１，１２２を弁本体
１１１に設置することができない。何故なら、座部１３
１ｃ，１３２ｃ，１３３ｃ，１３４ｃの径が弁座１３１
ｂ，１３２ｂ，１３３ｂ，１３４ｂの内径よりも大きい
ため、弁体１３１ａ，１３２ａ，１３３ａ，１３４ａを
固定した昇降軸１２１，１２２を弁本体１１１を一体で
構成した場合に弁本体１１１の一方向から挿入すること
によって設置することができないからである。このた
め、弁本体１１１の重量が大きくなって装置全体の重量
が大きくなってしまうばかりでなく、弁本体１１１の製
造コストも高価なものとなっていた。また、弁本体１１
１が三層構造であるため、水流切換装置１０１の組立作
業も複雑になるということもあった。However, the conventional water flow switching device 101 has the following problems. That is, in any of the first opening / closing valve 131, the second opening / closing valve 132, the third opening / closing valve 133, and the fourth opening / closing valve 134, the valve body 131 fixed to the lifting shafts 121 and 122.
a, 132a, 133a, 134a are valve seats 131b, 1
The first main body portion 1 constituting the valve main body 111 has the seat portions 131c, 132c, 133c, 134c having the outer diameters capable of being seated on the 32b, 133b, 134b.
11a, the second body 111b, and the third body 111c
Of the valve bodies 131a, 132a, 133
The elevating shafts 121 and 122 to which a and 134a are fixed cannot be installed in the valve body 111. Because the seat 13
The diameters of 1c, 132c, 133c, and 134c are the valve seat 131.
Since it is larger than the inner diameters of b, 132b, 133b, and 134b, the lifting shafts 121 and 122 to which the valve bodies 131a, 132a, 133a, and 134a are fixed are inserted from one direction of the valve body 111 when the valve body 111 is integrally formed. This is because it cannot be installed by doing. For this reason, not only the weight of the valve main body 111 becomes large and the weight of the entire apparatus becomes large, but also the manufacturing cost of the valve main body 111 becomes expensive. In addition, the valve body 11
Since No. 1 has a three-layer structure, the assembly work of the water flow switching device 101 may be complicated.
【００１４】従って、本発明は上述の問題に鑑みてなさ
れたものであり、その目的は、弁本体の軽量化、製造コ
ストの低減、組立作業の簡便化を実現可能な流体の流通
方向切換装置を提供することにある。Therefore, the present invention has been made in view of the above-mentioned problems, and an object thereof is a fluid flow direction switching device capable of realizing weight reduction of a valve body, reduction of manufacturing cost, and simplification of assembly work. To provide.
【００１５】[0015]
【課題を解決するための手段】上記問題を解決するた
め、本発明のうち請求項１に係る流体の流通方向切換装
置は、弁本体に、流体の供給源に連続する入口と、流体
の流出先に連続する出口と、前記入口及び前記出口のそ
れぞれから延びる第１及び第２横孔と、該第１及び第２
横孔間を連通する第１及び第２縦孔と、該縦孔のうちの
前記第１縦孔に連通されて前記入口及び出口に連通し且
つ流体使用機器の循環路に連続する第１出入口と、前記
縦孔のうちの前記第２縦孔に連通されて前記入口及び出
口に連通し且つ流体使用機器の循環路に連続する第２出
入口とを備え、前記入口と前記第１出入口との間に第１
開閉弁を、前記第１出入口と前記出口との間に第２開閉
弁を、前記入口と前記第２出入口との間に第３開閉弁
を、さらに前記第２出入口と前記出口との間に第４開閉
弁を設け、前記第１開閉弁及び前記第２開閉弁のそれぞ
れが前記第１縦孔内を昇降する共通の昇降軸に固定され
て前記第１縦孔を開閉する弁体を備え、前記第３開閉弁
及び前記第４開閉弁のそれぞれが前記第２縦孔内を昇降
する共通の昇降軸に固定されて前記第２縦孔を開閉する
弁体を備えた流体の流通方向切換装置において、前記第
１開閉弁の弁体及び前記第２開閉弁の弁体のうち少なく
とも一方の弁体は前記第１縦孔内を挿通可能に構成され
ると共に、前記第３開閉弁の弁体及び前記第４開閉弁の
弁体のうち少なくとも一方の弁体は前記第２縦孔内を挿
通可能に構成され、前記弁本体は一体部材で構成されて
いることを特徴としている。In order to solve the above problems, a fluid flow direction switching device according to a first aspect of the present invention comprises a valve body, an inlet continuous with a fluid supply source, and a fluid outflow. A first continuous outlet, first and second lateral holes extending from the inlet and the outlet, respectively, and the first and second
First and second vertical holes that communicate between the horizontal holes, and a first inlet / outlet that communicates with the first vertical hole of the vertical holes, communicates with the inlet and the outlet, and is continuous with the circulation path of the fluid using device. And a second inlet / outlet that communicates with the second vertical hole of the vertical holes, communicates with the inlet and the outlet, and is continuous with the circulation path of the fluid-using device, the inlet and the first inlet / outlet being provided. In the first
An on-off valve, a second on-off valve between the first inlet and outlet, a third on-off valve between the inlet and the second inlet, and further between the second inlet and outlet. A fourth opening / closing valve is provided, and each of the first opening / closing valve and the second opening / closing valve is fixed to a common lifting shaft that moves up and down in the first vertical hole, and includes a valve body that opens / closes the first vertical hole. , The third on-off valve and the fourth on-off valve are fixed to a common lifting shaft that moves up and down in the second vertical hole, and the fluid flow direction switching is provided with a valve body that opens and closes the second vertical hole. In the device, at least one of the valve element of the first on-off valve and the valve element of the second on-off valve is configured to be insertable into the first vertical hole, and the valve of the third on-off valve is provided. At least one of the body and the valve body of the fourth on-off valve is configured to be insertable in the second vertical hole, Kiben body is characterized by being composed by integral member.
【００１６】また、本発明のうち請求項２に係る流体の
流通方向切換装置は、請求項１記載の発明において、前
記弁本体の前記入口と前記第１開閉弁との間に、前記弁
本体の外部から前記第１横孔に向けて貫通するエアノズ
ル取付用孔を設けたことを特徴としている。According to a second aspect of the present invention, there is provided the fluid flow direction switching device according to the first aspect, wherein the valve body is provided between the inlet of the valve body and the first on-off valve. An air nozzle mounting hole that penetrates from the outside to the first lateral hole is provided.
【００１７】[0017]
【発明の実施の形態】本発明の実施形態を図面を参照し
て説明する。図１は本発明に係る流体の流通方向切換装
置の一部を断面した正面図である。図２は図１に示す流
通方向切換装置の平面図である。図３は図１に示す流通
方向切換装置の右側面図である。図４はエアノズルをエ
アノズル取付用孔に取り付けた状態の部分断面図であ
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view in which a part of a fluid flow direction switching device according to the present invention is shown in section. FIG. 2 is a plan view of the distribution direction switching device shown in FIG. FIG. 3 is a right side view of the distribution direction switching device shown in FIG. FIG. 4 is a partial cross-sectional view showing a state in which the air nozzle is attached to the air nozzle attachment hole.
【００１８】図１乃至図３において、流体の流通方向切
換装置１は、一体部材で構成されたステンレス鋳鋼製の
弁本体１１に、ポンプ（図示せず）を介して水、油等の
流体の供給源（図示せず）に連続する入口２と、流体の
排出先（図示せず）に連続する出口３と、入口２及び出
口３のそれぞれから延びる第１横孔１２及び第２横孔１
３と、第１横孔１２及び第２横孔１３間を連通する第１
縦孔１４及び第２縦孔１５と、第１縦孔１４に連通され
て入口２及び出口３に連通し且つ流体使用機器（図示せ
ず）の循環路に連続する第１出入口４と、第２縦孔１５
に連通されて入口２及び出口３に連通し且つ流体使用機
器の循環路に連続する第２出入口５とを備えている。In FIGS. 1 to 3, a fluid flow direction switching device 1 is provided with a valve body 11 made of stainless cast steel, which is made of an integral member, and is provided with a fluid such as water or oil via a pump (not shown). An inlet 2 connected to a supply source (not shown), an outlet 3 connected to a fluid discharge destination (not shown), a first lateral hole 12 and a second lateral hole 1 extending from the inlet 2 and the outlet 3, respectively.
3 for communicating between the first lateral hole 12 and the second lateral hole 13
A vertical hole 14 and a second vertical hole 15; a first inlet / outlet 4 which communicates with the first vertical hole 14 and communicates with an inlet 2 and an outlet 3 and which is continuous with a circulation path of a fluid using device (not shown); 2 vertical holes 15
And a second inlet / outlet 5 that communicates with the inlet 2 and the outlet 3 and is continuous with the circulation path of the fluid using device.
【００１９】そして、入口２と第１出入口４との間には
第１開閉弁３１が設けられ、第１出入口４と出口３との
間には第２開閉弁３２が設けられ、入口２と第２出入口
５との間には第３開閉弁３３が設けられ、さらに第２出
入口５と出口３との間には第４開閉弁３４が設けられて
いる。ここで、第１開閉弁３１及び第２開閉弁３２のそ
れぞれは、第１縦孔１４内を昇降する共通の昇降軸２１
に固定されて第１縦孔１４を開閉する弁体３１ａ，３２
ａを備えている。昇降軸２１が上昇すると、弁体３１ａ
は第１縦孔１４を開くとともに、弁体３２ａは第１縦孔
１４を閉じ、昇降軸２１が下降すると、弁体３１ａは第
１縦孔１４を閉じるとともに、弁体３２ａは第１縦孔１
４を開く。そして、第１開閉弁３１の弁体３１ａは、第
１縦孔１４の上端に形成された幅狭の開口１４ａと略同
一の外径を有して開口１４ａを挿通可能であると共に開
口１４ａを開閉可能な胴体部と、胴体部の上端に形成さ
れた開口１４ａよりも外径の大きな座部３１ｂとで構成
されている。この座部３１ｂは、弁体３１ａが第１縦孔
１４を閉じるとき、即ち胴体部が開口１４ａを閉じると
きに、開口１４ａの上端周囲に形成された凹部１４ｃに
着座するようになっている。一方、第２開閉弁３２の弁
体３２ａは、第１縦孔１４の下端に形成された幅狭の開
口１４ｂと略同一の外径を有して開口１４ｂを挿通可能
且つ開口１４ｂを開閉可能に構成されている。第２開閉
弁３２の弁体３２ａには、第１開閉弁３１の弁体３１ａ
と異なり、開口１４ｂよりも径の大きな座部は形成され
ていない。従って、弁体３２ａは開口１４ｂに対して上
下方向に完全に挿通可能となっている。なお、本実施形
態にあっては、第１開閉弁３１の弁体３１ａ及び第２開
閉弁３２の弁体３２ａは、いずれも昇降軸２１と一体形
成されているが、昇降軸２１に対して別体で形成しても
よい。A first opening / closing valve 31 is provided between the inlet 2 and the first inlet / outlet 4, and a second opening / closing valve 32 is provided between the first inlet / outlet 4 and the outlet 3. A third opening / closing valve 33 is provided between the second inlet / outlet 5 and a fourth opening / closing valve 34 between the second inlet / outlet 5 and the outlet 3. Here, each of the first opening / closing valve 31 and the second opening / closing valve 32 is a common lifting shaft 21 that moves up and down in the first vertical hole 14.
Fixed to the valve body 31a, 32 for opening and closing the first vertical hole 14
a. When the lifting shaft 21 moves up, the valve body 31a
Opens the first vertical hole 14, the valve body 32a closes the first vertical hole 14, and when the elevating shaft 21 descends, the valve body 31a closes the first vertical hole 14 and the valve body 32a closes the first vertical hole. 1
Open 4 The valve body 31a of the first opening / closing valve 31 has the same outer diameter as the narrow opening 14a formed at the upper end of the first vertical hole 14 and can be inserted through the opening 14a. It is composed of a body portion that can be opened and closed, and a seat portion 31b having an outer diameter larger than the opening 14a formed at the upper end of the body portion. The seat portion 31b is adapted to be seated in a recess 14c formed around the upper end of the opening 14a when the valve body 31a closes the first vertical hole 14, that is, when the body portion closes the opening 14a. On the other hand, the valve body 32a of the second opening / closing valve 32 has the same outer diameter as the narrow opening 14b formed at the lower end of the first vertical hole 14 and can be inserted through the opening 14b and can be opened / closed. Is configured. The valve body 32a of the second on-off valve 32 includes the valve body 31a of the first on-off valve 31.
Unlike the above, a seat having a diameter larger than that of the opening 14b is not formed. Therefore, the valve body 32a can be completely inserted in the vertical direction with respect to the opening 14b. In the present embodiment, the valve body 31a of the first opening / closing valve 31 and the valve body 32a of the second opening / closing valve 32 are both integrally formed with the elevating shaft 21. It may be formed separately.
【００２０】また、第３開閉弁３３及び第４開閉弁３４
のぞれぞれも、同様に、第２縦孔１５内を昇降する共通
の昇降軸２２に固定されて第２縦孔１５を開閉する弁体
３３ａ，３４ａを備えている。昇降軸２２が上昇する
と、弁体３３ａは第２縦孔１５を開くとともに、弁体３
４ａは第２縦孔１５を閉じ、昇降軸２２が下降すると、
弁体３３ａは第２縦孔１５を閉じるとともに、弁体３４
ａは第２縦孔１５を開く。そして、第３開閉弁３３の弁
体３３ａは、第１開閉弁３１の弁体３１ａと同様に、第
２縦孔１５の上端に形成された幅狭の開口１５ａと略同
一の外径を有して開口１５ａを挿通可能であると共に開
口１５ａを開閉可能な胴体部と、胴体部の上端に形成さ
れた開口１５ａよりも外径の大きな座部３３ｂとで構成
されている。この座部３３ｂは、第３開閉弁３３が第２
縦孔１５を閉じるとき、即ち胴体部が開口１５ａを閉じ
るときに、開口１５ａの上端周囲に形成された凹部１５
ｃに着座するようになっている。一方、第４開閉弁３４
の弁体３４ａは、第２開閉弁３２の弁体３２ａと同様
に、第２縦孔１５の下端に形成された幅狭の開口１５ｂ
と略同一の外径を有して開口１５ｂを挿通可能且つ開口
１５ｂを開閉可能に構成されている。第４開閉弁３４の
弁体３４ａにも、第３開閉弁３３の弁体３３ａと異な
り、開口１５ｂよりも径の大きな座部は形成されていな
い。従って、弁体３４ａは開口１５ｂに対して上下方向
に完全に挿通可能となっている。なお、本実施形態にあ
っては、第３開閉弁３３の弁体３３ａ及び第４開閉弁３
４の弁体３４ａは、いずれも昇降軸２２と一体形成され
ているが、昇降軸２２に対して別体で形成してもよい。Further, the third on-off valve 33 and the fourth on-off valve 34
Similarly, each of them is also provided with valve bodies 33a and 34a that are fixed to a common lifting shaft 22 that moves up and down in the second vertical hole 15 to open and close the second vertical hole 15. When the elevating shaft 22 moves up, the valve body 33a opens the second vertical hole 15 and the valve body 3a
4a closes the second vertical hole 15, and when the elevating shaft 22 descends,
The valve body 33a closes the second vertical hole 15 and also closes the valve body 34a.
a opens the second vertical hole 15. The valve body 33a of the third opening / closing valve 33 has an outer diameter substantially the same as that of the narrow opening 15a formed at the upper end of the second vertical hole 15 like the valve body 31a of the first opening / closing valve 31. And a seat portion 33b having an outer diameter larger than that of the opening 15a formed at the upper end of the body portion. The seat 33b has a second opening / closing valve 33
When closing the vertical hole 15, that is, when the body portion closes the opening 15a, the concave portion 15 formed around the upper end of the opening 15a.
It is designed to sit on c. On the other hand, the fourth on-off valve 34
The valve body 34a of the second opening / closing valve 32 has a narrow opening 15b formed at the lower end of the second vertical hole 15 like the valve body 32a of the second opening / closing valve 32.
The opening 15b has a substantially same outer diameter as the opening 15b and can be opened and closed. Unlike the valve body 33a of the third opening / closing valve 33, the valve body 34a of the fourth opening / closing valve 34 does not have a seat portion having a diameter larger than that of the opening 15b. Therefore, the valve element 34a can be completely inserted in the vertical direction with respect to the opening 15b. In the present embodiment, the valve body 33a of the third opening / closing valve 33 and the fourth opening / closing valve 3
The valve bodies 34a of No. 4 are integrally formed with the elevating shaft 22, but may be formed separately from the elevating shaft 22.
【００２１】そして、第１開閉弁３１及び第４開閉弁３
４と、第２開閉弁３２及び第３開閉弁３３との開閉が相
互に逆位相となるように、弁体３１ａ及び３２ａを固定
した昇降軸２１の昇降と弁体３３ａ及び３４ａを固定し
た昇降軸２２の昇降とが開閉切換機構により逆位相に制
御される。この開閉切換機構は、弁本体１１の上面であ
って昇降軸２１と昇降軸２２との間に立設された支軸５
０と、支軸５０の上端にピン７３により回動可能に設け
られ、一端に前記昇降軸２１の上端をピン７４により遊
嵌状態で取り付けるとともに、前記昇降軸２１と反対側
であって前記昇降軸２１と支軸５０との距離と同一距離
だけ離れたところに前記昇降軸２２の上端をピン７２に
より遊嵌状態で取り付けたリンク７０と、リンク７０の
前記昇降軸２１と反対側の端部にピストン６１の上端を
ピン７１により回動可能に取り付けたエアシリンダ６０
とで構成されている。エアシリンダ６０のピストン６１
が図１に示すように下方に位置するときには、第１開閉
弁３１の弁体３１ａ及び第２開閉弁３２の弁体３２ａを
固定した昇降軸２１が上昇すると共に第３開閉弁３３の
弁体３３ａ及び第４開閉弁３４の弁体３４ａを固定した
昇降軸２２が下降しており、正流モードを構成する。エ
アシリンダ６０内には、ピストン６１を常時下方に付勢
する圧縮ばね６２が設けられ、エアシリンダ６０にエア
が供給されないときにピストン６１が常に下方に位置し
て正流モードを維持するようにしている。エアシリンダ
６０にエアが供給されると、第１開閉弁３１の弁体３１
ａ及び第２開閉弁３２の弁体３２ａを固定した昇降軸２
１が下降すると共に第３開閉弁３３の弁体３３ａ及び第
４開閉弁３４の弁体３４ａを固定した昇降軸２２が上昇
し、逆流モードを構成するようになっている。昇降軸２
１，２２が昇降方向の中間位置にあるときには、リーク
モードを構成する。The first opening / closing valve 31 and the fourth opening / closing valve 3
4 and the second open / close valve 32 and the third open / close valve 33 are opened and closed in opposite phases to each other, the elevator shaft 21 having the valve bodies 31a and 32a fixed thereto is lifted and the valve bodies 33a and 34a are fixed lifted. The vertical movement of the shaft 22 is controlled by the open / close switching mechanism. The open / close switching mechanism is provided on the upper surface of the valve body 11 and is vertically provided between the lifting shaft 21 and the lifting shaft 22.
0, the upper end of the support shaft 50 is rotatably provided by a pin 73, and the upper end of the elevating shaft 21 is attached to one end of the elevating shaft 21 in a loosely fitted state by a pin 74. A link 70 in which the upper end of the elevating shaft 22 is loosely fitted by a pin 72 at the same distance as the distance between the shaft 21 and the support shaft 50, and an end portion of the link 70 opposite to the elevating shaft 21. An air cylinder 60 in which the upper end of the piston 61 is rotatably attached by a pin 71
It consists of and. Piston 61 of air cylinder 60
1 is located below as shown in FIG. 1, the elevating shaft 21 to which the valve body 31a of the first opening / closing valve 31 and the valve body 32a of the second opening / closing valve 32 are lifted and the valve body of the third opening / closing valve 33 is raised. The elevating shaft 22 to which the valve body 34a of the third opening / closing valve 34 is fixed is lowered, and the forward flow mode is formed. A compression spring 62 that constantly urges the piston 61 downward is provided in the air cylinder 60 so that the piston 61 is always positioned downward to maintain the forward flow mode when air is not supplied to the air cylinder 60. ing. When air is supplied to the air cylinder 60, the valve body 31 of the first on-off valve 31
a and the lifting shaft 2 with the valve body 32a of the second on-off valve 32 fixed
1 moves down, the lifting shaft 22 to which the valve body 33a of the third opening / closing valve 33 and the valve body 34a of the fourth opening / closing valve 34 are fixed moves up, and the reverse flow mode is constituted. Lifting axis 2
The leak mode is configured when the first and second terminals 22 and 22 are at the intermediate position in the vertical direction.
【００２２】なお、弁本体１１の昇降軸２１，２２の下
方に位置する部分には、弁本体１１の外部と第２横孔１
３を連通する雌ねじ付開口１６が形成され、これら雌ね
じ付開口１６には、昇降軸２１，２２の昇降を案内する
ガイドカバー４１が螺合固定されている。また、弁本体
１１の昇降軸２１，２２の上方部が位置する部分には、
弁本体１１の外部と第１横孔１２とを連通させる雌ねじ
付貫通孔１７が形成され、これら雌ねじ付貫通孔１７に
は、昇降軸２１が昇降可能に配置される栓部材４２が固
定されている。この栓部材４２は、雌ねじ付貫通孔１７
に螺合固定される基体部４３と、基体部４３に螺合固定
される蓋部４９とを備え、内部にパッキン４７を配置し
て第１横孔１２からの流体の漏出を防止しうるようにし
ている。パッキン４７は、昇降軸２１，２２の外周面と
基体部４３の内周面との間に配置され、基体部４３内に
収容された圧縮ばね４４によりワッシャ４５及びアダプ
タ４６を介して上方に付勢されるとともに蓋部４９の内
部に固定されたパッキン用スペーサ４８により上方への
移動が規制されている。In the portion of the valve body 11 located below the elevating shafts 21 and 22, the outside of the valve body 11 and the second lateral hole 1 are provided.
Openings 16 with internal threads for communicating 3 are formed, and guide covers 41 for guiding up and down movement of the elevating shafts 21 and 22 are screwed and fixed to the openings 16 with internal threads. Further, in the portion where the upper part of the lifting shafts 21 and 22 of the valve body 11 is located,
Female screw through-holes 17 are formed to connect the outside of the valve body 11 and the first lateral hole 12 to each other, and a stopper member 42 on which the elevating shaft 21 is movable up and down is fixed to the female screw through-holes 17. There is. The plug member 42 has a through hole 17 with a female screw.
A base portion 43 screwed and fixed to the base portion 43 and a lid portion 49 screwed and fixed to the base portion 43 are provided, and a packing 47 is arranged inside so that leakage of fluid from the first lateral hole 12 can be prevented. I have to. The packing 47 is arranged between the outer peripheral surfaces of the elevating shafts 21 and 22 and the inner peripheral surface of the base portion 43, and is attached upward by a compression spring 44 housed in the base portion 43 via a washer 45 and an adapter 46. The packing spacer 48, which is biased and fixed inside the lid 49, restricts the upward movement.
【００２３】さらに、弁本体１１の入口２と第１開閉弁
３１との間には、弁本体１１の外部から第１横孔１２に
向けて貫通するエアノズル取付用孔１８が設けられてい
る。このエアノズル取付用孔１８には、図１に示すよう
に、通常、栓体８０が螺合固定されて第１横孔１２を弁
本体１１の外部に対して遮断しているが、必要に応じて
図４に示すように栓体８０を取り外してエアノズル８１
を螺合固定することができる。流体として水を使用する
場合において、エアノズル取付用孔１８にエアノズル８
１を取り付けて流通方向切換装置１の作動中に図示しな
いエア供給源からエアを第１横孔１２に供給すると、入
口２から出口３に至るまでの水中にキャビテーションが
発生する。これにより、流体使用機器の循環路内に堆積
したスケール等の不純物の排出効果が増加すると共に、
また、流体使用機器が水によって冷却又は加熱されるも
のである場合にも、流体使用機器の冷却又は加熱を均一
にする効果が増強される。Further, between the inlet 2 of the valve body 11 and the first on-off valve 31, there is provided an air nozzle mounting hole 18 penetrating from the outside of the valve body 11 toward the first lateral hole 12. As shown in FIG. 1, a plug 80 is usually screwed and fixed to the air nozzle mounting hole 18 to shut off the first lateral hole 12 from the outside of the valve body 11. As shown in FIG. 4, the plug 80 is removed to remove the air nozzle 81.
Can be fixed by screwing. When water is used as the fluid, the air nozzle 8 is installed in the air nozzle mounting hole 18.
When air is supplied from the air supply source (not shown) to the first lateral hole 12 during operation of the flow direction switching device 1 with the No. 1 installed, cavitation occurs in the water from the inlet 2 to the outlet 3. This increases the effect of discharging impurities such as scale accumulated in the circulation path of the fluid-using device,
Further, even when the fluid use device is cooled or heated by water, the effect of uniform cooling or heating of the fluid use device is enhanced.
【００２４】次に、流通方向切換装置１の組立方法につ
いて説明する。流通方向切換装置１を組立てるには、先
ず、弁体３１ａ，３２ａを固定した昇降軸２１及び弁体
３３ａ，３４ａを固定した昇降軸２２のそれぞれを、弁
本体１１の雌ねじ付貫通孔１７から弁体３２ａ，３４ａ
を下方にして挿入し、その挿入を進行させて弁体３２
ａ，３４ａのそれぞれを第１縦孔１４の開口１４ａ，１
４ｂ、第２縦孔１５の開口１５ａ，１５ｂの順に挿通さ
せる。このとき、弁体３１ａ，３３ａも雌ねじ付貫通孔
１７を通って第１横孔１２内に位置する。この昇降軸２
１及び２２の弁本体１１への挿入に際しては、第２開閉
弁３２の弁体３２ａ及び第４開閉弁３４の弁体３４ａに
は、開口１４ｂ、１５ｂよりも径の大きな座部は形成さ
れていないため、弁体３２ａ，３４ａが雌ねじ付貫通孔
１７、開口１４ａ、１５ｂ、及び開口１４ｂ、１５ｂ内
を円滑に挿通する。このため、弁本体１１を、図８に示
した従来の弁本体１１１と異なり、一体部材で構成する
ことができ、弁本体の軽量化、製造コストの低減を図る
ことができる。また、昇降軸２１及び２２の弁本体１１
への設置に際しては、昇降軸２１及び２２を一体部材の
弁本体１１の雌ねじ付貫通孔１７から下方に挿入するだ
けでよいから、流通方向切換装置１の組立作業も比較的
容易になる。Next, a method of assembling the flow direction switching device 1 will be described. In order to assemble the flow direction switching device 1, first, the lift shaft 21 having the valve bodies 31a and 32a fixed thereto and the lift shaft 22 having the valve bodies 33a and 34a fixed thereto are valved from the through holes 17 with female threads of the valve body 11. Bodies 32a, 34a
Is inserted downward, and the insertion is advanced so that the valve body 32
a and 34a respectively to the openings 14a, 1 of the first vertical hole 14.
4b and the openings 15a and 15b of the second vertical hole 15 are inserted in this order. At this time, the valve bodies 31a and 33a are also located in the first lateral hole 12 through the female screw through hole 17. This lifting shaft 2
When 1 and 22 are inserted into the valve body 11, the valve body 32a of the second opening / closing valve 32 and the valve body 34a of the fourth opening / closing valve 34 are formed with a seat portion having a larger diameter than the openings 14b and 15b. Since the valve bodies 32a and 34a do not exist, the valve bodies 32a and 34a smoothly pass through the through holes 17 with female threads, the openings 14a and 15b, and the openings 14b and 15b. Therefore, unlike the conventional valve body 111 shown in FIG. 8, the valve body 11 can be formed of an integral member, and the valve body can be made lightweight and the manufacturing cost can be reduced. Further, the valve body 11 of the lifting shafts 21 and 22
In order to install the flow direction switching device 1, the lifting shafts 21 and 22 only have to be inserted downward from the female screw through hole 17 of the valve body 11 which is an integral member.
【００２５】次いで、弁本体１１の雌ねじ付開口１６
に、弁本体１１の下方から昇降軸２１，２２の昇降を案
内するガイドカバー４１を螺合固定すると共に、雌ねじ
付貫通孔１７に、弁本体１１の上方から栓部材４２を螺
合固定する。ガイドカバー４１及び栓部材４２を螺合固
定することにより、装置内の流体の外部への漏出が防止
される。Next, the female threaded opening 16 of the valve body 11 is formed.
In addition, a guide cover 41 that guides the elevation of the elevating shafts 21 and 22 is screwed and fixed from below the valve body 11, and a plug member 42 is screwed and fixed to the female screw through hole 17 from above the valve body 11. By screwing and fixing the guide cover 41 and the plug member 42, leakage of the fluid in the apparatus to the outside is prevented.
【００２６】その後、リンク７０を支軸５０の上端にピ
ン７３により回動可能に軸支し、昇降軸２１の上端をリ
ンク７０の一端にピン７４により遊嵌状態で連結すると
共に、昇降軸２２の上端を前記昇降軸２１と反対側であ
って前記昇降軸２１と支軸５０との距離と同一距離だけ
離れたところにピン７２により遊嵌状態で連結する。ま
た、エアシリンダ６０のピストン６１の上端をリンク７
０の前記昇降軸２１と反対側の端部にピン７１により回
動可能に連結する。Thereafter, the link 70 is rotatably supported on the upper end of the support shaft 50 by a pin 73, the upper end of the elevating shaft 21 is connected to one end of the link 70 by a pin 74 in a loosely fitted state, and the elevating shaft 22 is also provided. Is connected by a pin 72 at a position opposite to the elevating shaft 21 and separated from the elevating shaft 21 by the same distance as the distance between the elevating shaft 21 and the support shaft 50. In addition, the upper end of the piston 61 of the air cylinder 60 is connected to the link 7
A pin 71 is rotatably connected to an end portion of the 0 side opposite to the elevating shaft 21.
【００２７】そして、弁本体１１のエアノズル取付用孔
に、栓体８０を取り付けるか、あるいはエアノズル８１
を取り付けることにより、流通方向切換装置１は完成す
る。このように完成された流通方向切換装置１の作用に
ついて図５乃至図７を参照して説明する。図５は正流モ
ード時の流体の流れを説明するための流体切換装置の模
式図である。図６はリークモード時の流体の流れを説明
するための流体切換装置の模式図である。図７は逆流モ
ード時の流体の流れを説明するための流体切換装置の模
式図である。Then, the plug 80 is attached to the air nozzle attachment hole of the valve body 11 or the air nozzle 81 is attached.
The distribution direction switching device 1 is completed by attaching. The operation of the distribution direction switching device 1 thus completed will be described with reference to FIGS. 5 to 7. FIG. 5 is a schematic diagram of a fluid switching device for explaining the flow of fluid in the forward flow mode. FIG. 6 is a schematic view of a fluid switching device for explaining the flow of fluid in the leak mode. FIG. 7 is a schematic diagram of a fluid switching device for explaining the flow of fluid in the reverse flow mode.
【００２８】図５に示すように、エアシリンダ６０のピ
ストン６１が下方に位置するときには、第１開閉弁３１
の弁体３１ａ及び第２開閉弁３２の弁体３２ａを固定し
た昇降軸２１が上昇すると共に第３開閉弁３３の弁体３
３ａ及び第４開閉弁３４の弁体３４ａを固定した昇降軸
２２が下降し、正流モードを構成する。この正流モード
時にあっては、第１開閉弁３１及び第４開閉弁３４が開
き、第２開閉弁３２及び第３開閉弁３３が閉じ、流体の
供給源から流通方向切換装置１の入口２に入った流体
は、第１出入口４から流出して流体使用機器の循環路を
一方向に循環し、流通方向切換装置１の第２出入口５に
入って出口３から流出先に流出する。As shown in FIG. 5, when the piston 61 of the air cylinder 60 is located below, the first opening / closing valve 31
Of the valve element 31a of the second opening / closing valve 32 and the lifting shaft 21 to which the valve element 32a of the second opening / closing valve 32 is fixed rises, and
The elevating shaft 22 to which the valve body 34a of the third opening / closing valve 34 and the valve 3a is fixed moves down to form a forward flow mode. In the forward flow mode, the first opening / closing valve 31 and the fourth opening / closing valve 34 are opened, the second opening / closing valve 32 and the third opening / closing valve 33 are closed, and the inlet 2 of the flow direction switching device 1 from the fluid supply source is closed. The entered fluid flows out from the first inlet / outlet 4 and circulates in one direction in the circulation path of the fluid-using device, enters the second inlet / outlet 5 of the flow direction switching device 1, and flows out from the outlet 3 to the outlet.
【００２９】また、図６に示すように、エアシリンダ６
０のピストン６１が中間位置に位置するときには、第１
開閉弁３１の弁体３１ａ及び第２開閉弁３２の弁体３２
ａを固定した昇降軸２１が図５に示した状態から下降す
ると共に第３開閉弁３３の弁体３３ａ及び第４開閉弁３
４の弁体３４ａを固定した昇降軸２２が上昇し、第１開
閉弁３１の弁体３１ａ、第２開閉弁３２の弁体３２ａ、
第３開閉弁３３の弁体３３ａ、及び第４開閉弁３４の弁
体３４ａが昇降方向において入口２及び出口３間の中心
に位置し、リークモードを構成する。このリークモード
時にあっては、第１〜第４開閉弁３１ａ，３２ａ，３３
ａ，３４ａが半分程度開いた状態、即ち入口２、出口
３、第１出入口４、及び第２出入口５が相互に連通した
状態となり、流体の供給源から流通方向切換装置１の入
口２に入った流体は、流通方向切換装置１を通過して出
口５から流出先に流出する。これにより、流体抵抗がな
くなり、流体使用機器への流体による衝撃を緩和するこ
とができる。また、入口２に連続するポンプにも大きな
負荷をかけることはない。Further, as shown in FIG. 6, the air cylinder 6
When the zero piston 61 is in the intermediate position, the first
Valve body 31a of the on-off valve 31 and valve body 32 of the second on-off valve 32
The elevating shaft 21 to which a is fixed descends from the state shown in FIG. 5, and the valve body 33a of the third opening / closing valve 33 and the fourth opening / closing valve 3
4, the lift shaft 22 having the valve element 34a fixed thereto moves up, the valve element 31a of the first on-off valve 31, the valve element 32a of the second on-off valve 32,
The valve element 33a of the third on-off valve 33 and the valve element 34a of the fourth on-off valve 34 are located at the center between the inlet 2 and the outlet 3 in the ascending / descending direction, and constitute the leak mode. In the leak mode, the first to fourth on-off valves 31a, 32a, 33
a, 34a are about half opened, that is, the inlet 2, the outlet 3, the first inlet / outlet 4, and the second inlet / outlet 5 are in communication with each other, and the inlet 2 of the flow direction switching device 1 enters from the fluid supply source. The generated fluid passes through the flow direction switching device 1 and flows out from the outlet 5 to the destination. As a result, the fluid resistance is eliminated, and the impact of the fluid on the device using the fluid can be mitigated. Moreover, a large load is not applied to the pump continuous to the inlet 2.
【００３０】さらに、図７に示すように、エアシリンダ
６０のピストン６１が上方に位置するときには、第１開
閉弁３１の弁体３１ａ及び第２開閉弁３２の弁体３２ａ
を固定した昇降軸２１が図６に示す状態から更に下降す
ると共に第３開閉弁３３の弁体３３ａ及び第４開閉弁３
４の弁体３４ａを固定した昇降軸２２が上昇し、逆流モ
ードを構成する。この逆流モード時にあっては、第１開
閉弁３１及び第４開閉弁３４が閉じ、第２開閉弁３２及
び第３開閉弁３３が開き、流体の供給源から流通方向切
換装置１の入口２に入った流体は、第２出入口５から流
出して流体使用機器の循環路を前記の正流モード時とは
逆方向に循環し、流通方向切換装置１の第１出入口４に
入って出口３から流出先に流出する。このように、流体
使用機器の循環路内に流体が正逆方向に切り替わるた
め、流体使用機器の循環路内に堆積したスケール等の不
純物を円滑に排出することができる。また、流体使用機
器が水によって冷却又は加熱されるものである場合に
も、流体使用機器の冷却又は加熱を均一にすることがで
きる。なお、図５乃至図７中、符号ＣＬはリンク７０の
中心線を示す。Further, as shown in FIG. 7, when the piston 61 of the air cylinder 60 is located above, the valve element 31a of the first on-off valve 31 and the valve element 32a of the second on-off valve 32 are arranged.
The elevating shaft 21 with the fixed valve is further lowered from the state shown in FIG. 6, and the valve body 33a of the third opening / closing valve 33 and the fourth opening / closing valve 3
The up-and-down shaft 22 to which the valve body 34a of No. 4 is fixed moves up to form the reverse flow mode. In the reverse flow mode, the first opening / closing valve 31 and the fourth opening / closing valve 34 are closed, the second opening / closing valve 32 and the third opening / closing valve 33 are opened, and the fluid supply source is connected to the inlet 2 of the flow direction switching device 1. The entered fluid flows out from the second inlet / outlet 5 and circulates in the circulation path of the fluid-using device in the direction opposite to that in the normal flow mode, enters the first inlet / outlet 4 of the flow direction switching device 1 and enters from the outlet 3. Spill to the spill destination. As described above, the fluid is switched in the circulation path of the device using fluid in the forward and reverse directions, so that impurities such as scale accumulated in the circulation path of the device using fluid can be smoothly discharged. Further, even when the fluid using device is cooled or heated by water, the cooling or heating of the fluid using device can be made uniform. In addition, in FIGS. 5 to 7, the symbol CL indicates the center line of the link 70.
【００３１】以上、本発明の実施形態について説明して
きたが、本発明はこれに限定されず、種々の変更を行う
ことができる。例えば、本実施形態にあっては、第１開
閉弁３１の弁体３１ａ及び第２開閉弁３２の弁体３２ａ
のうち第２開閉弁３２の弁体３２ａが第１縦孔１４の開
口１４ｂを挿通可能に構成されているが、これに代えて
第１開閉弁３１の弁体３１ａが第１縦孔１４の開口１４
ａを挿通可能に構成されていてもよく、あるいは第１開
閉弁３１の弁体３１ａ及び第２開閉弁３２の弁体３２ａ
の双方が第１縦孔１４の開口１４ａ及び１４ｂを挿通可
能に構成されていてもよい。また、本実施形態にあって
は、第３開閉弁３３の弁体３３ａ及び第４開閉弁３４の
弁体３４ａのうち第４開閉弁３４の弁体３４ａが第２縦
孔１５の開口１５ｂを挿通可能に構成されているが、こ
れに代えて第３開閉弁３３の弁体３３ａが第２縦孔１５
の開口１５ａを挿通可能に構成されていてもよく、ある
いは第３開閉弁３３の弁体３３ａ及び第２開閉弁３４の
弁体３４ａの双方が第２縦孔１５の開口１５ａ及び１５
ｂを挿通可能に構成されていてもよい。Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made. For example, in the present embodiment, the valve body 31a of the first opening / closing valve 31 and the valve body 32a of the second opening / closing valve 32.
Of these, the valve body 32a of the second on-off valve 32 is configured to be able to pass through the opening 14b of the first vertical hole 14, but instead of this, the valve body 31a of the first on-off valve 31 of the first vertical hole 14 is formed. Opening 14
a may be inserted, or the valve element 31a of the first on-off valve 31 and the valve element 32a of the second on-off valve 32.
Both of them may be configured to be able to be inserted through the openings 14a and 14b of the first vertical hole 14. Further, in the present embodiment, the valve element 34a of the fourth opening / closing valve 34 among the valve element 33a of the third opening / closing valve 33 and the valve element 34a of the fourth opening / closing valve 34 forms the opening 15b of the second vertical hole 15. Although it is configured to be insertable, the valve element 33a of the third opening / closing valve 33 is replaced by the second vertical hole 15 instead.
Of the second opening / closing valve 33 may be inserted, or both the valve body 33a of the third opening / closing valve 33 and the valve body 34a of the second opening / closing valve 34 may be opened.
b may be configured to be insertable.
【００３２】[0032]
【発明の効果】以上説明したように、本発明のうち請求
項１に係る流体の流通方向切換装置によれば、第１開閉
弁の弁体及び第２開閉弁の弁体のうち少なくとも一方の
弁体は第１縦孔内を挿通可能に構成されると共に、第３
開閉弁の弁体及び第４開閉弁の弁体のうち少なくとも一
方の弁体は第２縦孔内を挿通可能に構成され、弁本体は
一体部材で構成されているので、弁本体の軽量化、製造
コストの低減を図ることができる。また、第１開閉弁の
弁体及び第２開閉弁の弁体を固定した昇降軸と第３開閉
弁の弁体及び第４開閉弁の弁体を固定した昇降軸との弁
本体への設置に際しては、前記昇降軸を一体部材の弁本
体に挿入するだけでよいから、流通方向切換装置の組立
作業も比較的容易に行うことができる。As described above, according to the fluid flow direction switching device of the first aspect of the present invention, at least one of the valve element of the first on-off valve and the valve element of the second on-off valve is used. The valve body is configured to be insertable in the first vertical hole, and the third
At least one of the valve element of the on-off valve and the valve element of the fourth on-off valve is configured to be insertable in the second vertical hole, and the valve body is formed of an integral member, so the weight of the valve body is reduced. Therefore, the manufacturing cost can be reduced. In addition, installation on the valve body of an elevating shaft to which the valve element of the first on-off valve and the valve element of the second on-off valve are fixed and an elevating axis to which the valve element of the third on-off valve and the valve element of the fourth on-off valve are fixed At this time, since it is only necessary to insert the elevating shaft into the valve body of the integral member, the assembling work of the flow direction switching device can be performed relatively easily.
【００３３】また、本発明のうち請求項２に係る流体の
流通方向切換装置によれば、請求項１記載の発明におい
て、前記弁本体の入口と前記第１開閉弁との間に、前記
弁本体の外部から第１横孔に向けて貫通するエアノズル
取付用孔を設けたので、エアノズルをこのエアノズル取
付用孔に取り付けて装置の作動中にエア供給源からエア
を第１横孔に供給すると、入口から出口に至るまでの水
中にキャビテーションが発生する。これにより、流体使
用機器の循環路内に堆積したスケール等の不純物の排出
効果が増加すると共に、また、流体使用機器が水によっ
て冷却又は加熱されるものである場合にも、流体使用機
器の冷却又は加熱を均一にする効果を増強することがで
きる。According to the fluid flow direction switching device of the second aspect of the present invention, in the invention of the first aspect, the valve is provided between the inlet of the valve body and the first on-off valve. Since the air nozzle mounting hole penetrating from the outside of the main body toward the first lateral hole is provided, when the air nozzle is mounted in this air nozzle mounting hole and air is supplied from the air supply source to the first lateral hole during the operation of the device. , Cavitation occurs in the water from the entrance to the exit. This increases the effect of discharging impurities such as scale accumulated in the circulation path of the fluid-using device, and also cools the fluid-using device when the fluid-using device is cooled or heated by water. Alternatively, the effect of uniform heating can be enhanced.
【図１】本発明に係る流体の流通方向切換装置の一部を
断面した正面図である。FIG. 1 is a front view in which a part of a fluid flow direction switching device according to the present invention is shown in section.
【図２】図１に示す流通方向切換装置の平面図である。FIG. 2 is a plan view of the flow direction switching device shown in FIG.
【図３】図１に示す流通方向切換装置の右側面図であ
る。FIG. 3 is a right side view of the distribution direction switching device shown in FIG.
【図４】エアノズルをエアノズル取付用孔に取り付けた
状態の部分断面図である。FIG. 4 is a partial cross-sectional view showing a state in which the air nozzle is attached to the air nozzle attachment hole.
【図５】正流モード時の流体の流れを説明するための流
体切換装置の模式図である。FIG. 5 is a schematic diagram of a fluid switching device for explaining the flow of fluid in the normal flow mode.
【図６】リークモード時の流体の流れを説明するための
流体切換装置の模式図である。FIG. 6 is a schematic diagram of a fluid switching device for explaining a fluid flow in a leak mode.
【図７】逆流モード時の流体の流れを説明するための流
体切換装置の模式図である。FIG. 7 is a schematic diagram of a fluid switching device for explaining the flow of fluid in the reverse flow mode.
【図８】従来例の水流切換装置を示し、（Ａ）は水流切
換装置の概略図、（Ｂ）は水流切換装置の概略縦断面図
である。FIG. 8 shows a conventional water flow switching device, (A) is a schematic view of the water flow switching device, and (B) is a schematic vertical sectional view of the water flow switching device.
１ 流体の流通方向切換装置 ２ 入口 ３ 出口 ４ 第１出入口 ５ 第２出入口 １１ 弁本体 １２ 第１横孔 １３ 第２横孔 １４ 第１縦孔 １４ａ 開口 １４ｂ 開口 １４ｃ 凹部 １５ 第２縦孔 １５ａ 開口 １５ｂ 開口 １５ｃ 凹部 １６ 雌ねじ付開口 １７ 雌ねじ付貫通孔 １８ エアノズル取付用孔 ２１ 昇降軸 ２２ 昇降軸 ３１ 第１開閉弁 ３１ａ 弁体 ３１ｂ 座部 ３２ 第２開閉弁 ３２ａ 弁体 ３３ 第３開閉弁 ３３ａ 弁体 ３３ｂ 座部 ３４ 第４開閉弁 ３４ａ 弁体 ４１ ガイドカバー ４２ 栓部材 ４３ 基体部 ４４ 圧縮ばね ４５ ワッシャ ４６ アダプタ ４７ パッキン ４８ ッキン用スペーサ ４９ 蓋部 ５０ 支軸 ６０ エアシリンダ ６１ ピストン ６２ 圧縮ばね ７０ リンク ７１，７２，７３，７４ ピン ８０ 栓体 ８１ エアノズル 1 Fluid flow direction switching device 2 entrance 3 exit 4 first doorway 5 second doorway 11 valve body 12 First horizontal hole 13 Second horizontal hole 14 First vertical hole 14a opening 14b opening 14c recess 15 Second vertical hole 15a opening 15b opening 15c recess 16 Female threaded opening 17 Through hole with female screw 18 Air nozzle mounting hole 21 Lifting axis 22 Lifting axis 31 1st on-off valve 31a Valve body 31b seat 32 Second on-off valve 32a valve body 33 3rd on-off valve 33a valve body 33b seat 34 4th on-off valve 34a valve body 41 Guide cover 42 Plug member 43 Base part 44 Compression spring 45 washers 46 Adapter 47 packing 48 packing spacer 49 Lid 50 spindles 60 air cylinder 61 pistons 62 compression spring 70 links 71, 72, 73, 74 pins 80 plug 81 Air nozzle
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3H067 AA01 AA16 AA32 AA38 BB03 CC33 DD02 DD12 DD33 DD47 EC15 FF11 GG13 GG22 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3H067 AA01 AA16 AA32 AA38 BB03 CC33 DD02 DD12 DD33 DD47 EC15 FF11 GG13 GG22
Claims (2)
と、流体の流出先に連続する出口と、前記入口及び前記
出口のそれぞれから延びる第１及び第２横孔と、該第１
及び第２横孔間を連通する第１及び第２縦孔と、該縦孔
のうちの前記第１縦孔に連通されて前記入口及び出口に
連通し且つ流体使用機器の循環路に連続する第１出入口
と、前記縦孔のうちの前記第２縦孔に連通されて前記入
口及び出口に連通し且つ流体使用機器の循環路に連続す
る第２出入口とを備え、前記入口と前記第１出入口との
間に第１開閉弁を、前記第１出入口と前記出口との間に
第２開閉弁を、前記入口と前記第２出入口との間に第３
開閉弁を、さらに前記第２出入口と前記出口との間に第
４開閉弁を設け、前記第１開閉弁及び前記第２開閉弁の
それぞれが前記第１縦孔内を昇降する共通の昇降軸に固
定されて前記第１縦孔を開閉する弁体を備え、前記第３
開閉弁及び前記第４開閉弁のそれぞれが前記第２縦孔内
を昇降する共通の昇降軸に固定されて前記第２縦孔を開
閉する弁体を備えた流体の流通方向切換装置において、 前記第１開閉弁の弁体及び前記第２開閉弁の弁体のうち
少なくとも一方の弁体は前記第１縦孔内を挿通可能に構
成されると共に、前記第３開閉弁の弁体及び前記第４開
閉弁の弁体のうち少なくとも一方の弁体は前記第２縦孔
内を挿通可能に構成され、 前記弁本体は一体部材で構成されていることを特徴とす
る流体の流通方向切換装置。1. A valve body, an inlet connected to a fluid supply source, an outlet connected to a fluid outflow destination, first and second lateral holes extending from the inlet and the outlet, respectively, and the first
And first and second vertical holes communicating between the second horizontal holes, and the first vertical hole of the vertical holes, the first and second vertical holes, the inlet and the outlet, and the circulation path of the fluid using device. A first inlet / outlet; and a second inlet / outlet that communicates with the second vertical hole of the vertical holes, communicates with the inlet and the outlet, and is continuous with the circulation path of the fluid-using device. A first opening / closing valve is provided between the inlet and the outlet, a second opening / closing valve is provided between the first inlet and the outlet, and a third opening and closing valve is provided between the inlet and the second outlet.
An on-off valve, and a fourth on-off valve provided between the second inlet and outlet and a fourth on-off valve, and each of the first on-off valve and the second on-off valve is a common lifting shaft that moves up and down in the first vertical hole. A valve body fixed to the first vertical hole to open and close the first vertical hole;
In the fluid flow direction switching device, each of the opening / closing valve and the fourth opening / closing valve is fixed to a common lifting shaft that moves up and down in the second vertical hole, and includes a valve body that opens and closes the second vertical hole. At least one of the valve element of the first on-off valve and the valve element of the second on-off valve is configured to be insertable in the first vertical hole, and the valve element of the third on-off valve and the third valve element At least one of the valve bodies of the four on-off valves is configured to be insertable in the second vertical hole, and the valve body is formed of an integral member.
の間に、前記弁本体の外部から前記第１横孔に向けて貫
通するエアノズル取付用孔を設けたことを特徴とする請
求項１記載の流体の流通方向切換装置。2. An air nozzle mounting hole penetrating from the outside of the valve body toward the first lateral hole is provided between the inlet of the valve body and the first opening / closing valve. The fluid flow direction switching device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001199960A JP3636678B2 (en) | 2001-06-29 | 2001-06-29 | Fluid flow direction switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001199960A JP3636678B2 (en) | 2001-06-29 | 2001-06-29 | Fluid flow direction switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003014144A true JP2003014144A (en) | 2003-01-15 |
| JP3636678B2 JP3636678B2 (en) | 2005-04-06 |
Family
ID=19037168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001199960A Expired - Fee Related JP3636678B2 (en) | 2001-06-29 | 2001-06-29 | Fluid flow direction switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3636678B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2493444C2 (en) * | 2011-12-08 | 2013-09-20 | Частное Акционерное Общество "Тахион" (ПРАТ "Taxioн) | Flow switching device |
| WO2020095591A1 (en) * | 2018-11-08 | 2020-05-14 | 株式会社不二工機 | Flow path switching valve |
| JP2020076485A (en) * | 2018-11-08 | 2020-05-21 | 株式会社不二工機 | Passage switching valve |
-
2001
- 2001-06-29 JP JP2001199960A patent/JP3636678B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2493444C2 (en) * | 2011-12-08 | 2013-09-20 | Частное Акционерное Общество "Тахион" (ПРАТ "Taxioн) | Flow switching device |
| WO2020095591A1 (en) * | 2018-11-08 | 2020-05-14 | 株式会社不二工機 | Flow path switching valve |
| JP2020076485A (en) * | 2018-11-08 | 2020-05-21 | 株式会社不二工機 | Passage switching valve |
| CN112997028A (en) * | 2018-11-08 | 2021-06-18 | 株式会社不二工机 | Flow path switching valve |
| KR20210083344A (en) * | 2018-11-08 | 2021-07-06 | 가부시기가이샤 후지고오키 | flow diverter valve |
| JP7105489B2 (en) | 2018-11-08 | 2022-07-25 | 株式会社不二工機 | Flow switching valve |
| EP3879149A4 (en) * | 2018-11-08 | 2022-07-27 | Fujikoki Corporation | Flow path switching valve |
| KR102569601B1 (en) * | 2018-11-08 | 2023-08-23 | 가부시기가이샤 후지고오키 | Euro changeover valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3636678B2 (en) | 2005-04-06 |
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