JPH062786A - Vacuum valve - Google Patents
Vacuum valveInfo
- Publication number
- JPH062786A JPH062786A JP15915992A JP15915992A JPH062786A JP H062786 A JPH062786 A JP H062786A JP 15915992 A JP15915992 A JP 15915992A JP 15915992 A JP15915992 A JP 15915992A JP H062786 A JPH062786 A JP H062786A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- vacuum
- main valve
- chamber
- plunger
- 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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Links
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- Sewage (AREA)
- Details Of Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、真空式汚水収集装置、
真空式薬液輸送装置等を構成するに好適な真空弁に関す
る。BACKGROUND OF THE INVENTION The present invention relates to a vacuum type waste water collecting device,
The present invention relates to a vacuum valve suitable for constituting a vacuum type chemical liquid transportation device and the like.
【０００２】[0002]
【従来の技術】従来、真空弁として、特公表平2-503128
号公報に記載の如くのものがある。この従来技術は、タ
ンクに連通する吸込み管と真空源に連通する真空排出管
との間の連絡部を開閉可能とし、上記連絡部を開閉する
主弁と、主弁と弁棒を介して連結されているプランジャ
を収容する弁作動室と、弁作動室に内蔵されて主弁に閉
じ力を付与する閉じ力付与手段と、弁作動室に真空圧を
付与して主弁に開き力を付与する制御部とを有して構成
されている。2. Description of the Related Art Conventionally, as a vacuum valve, Japanese Patent Publication No. 2-503128
There is one as described in the publication. In this conventional technique, a connecting portion between a suction pipe communicating with a tank and a vacuum discharge pipe communicating with a vacuum source can be opened and closed, and a main valve for opening and closing the connecting portion is connected with a main valve and a valve rod. The valve working chamber that accommodates the plunger, the closing force applying means that is built in the valve operating chamber and applies the closing force to the main valve, and the vacuum pressure is applied to the valve operating chamber to apply the opening force to the main valve. And a control unit that operates.
【０００３】このとき、従来技術では、真空弁の各構成
部材をプラスチックにて形成し、それら構成部材を互い
にビス止めしている。At this time, in the prior art, each constituent member of the vacuum valve is formed of plastic and the constituent members are screwed together.
【０００４】[0004]
【発明が解決しようとする課題】然しながら、従来技術
では、真空弁の各構成部材をビス止めするものであるた
め、多数のビス、インサート金具を用いる必要があり、
また多数のビス止め作業工数を必要とし、組立作業性が
悪く、コスト高となる。また、ビスの締め忘れや締め不
足による真空弁の作動信頼性の低下をきたすといった問
題もあった。However, in the prior art, since the respective constituent members of the vacuum valve are fixed with screws, it is necessary to use a large number of screws and insert fittings.
In addition, a large number of man-hours for screw fixing are required, assembly workability is poor, and the cost is high. There is also a problem that the operation reliability of the vacuum valve is lowered due to forgetting to tighten the screw or insufficient tightening.
【０００５】本発明は、真空弁の組立作業性を良好と
し、コスト低減を図るとともに、ビスの締め忘れ等によ
る作動信頼性の低下を生じることのない真空弁を得るこ
とを目的とする。An object of the present invention is to provide a vacuum valve which has good workability in assembling the vacuum valve, reduces the cost, and does not cause a decrease in operational reliability due to forgetting to tighten a screw or the like.
【０００６】[0006]
【課題を解決するための手段】本発明は、タンクに連通
する吸込み管と真空源に連通する真空排出管との間の連
絡部を開閉可能とし、上記連絡部を開閉する主弁と、主
弁と弁棒を介して連結されているプランジャを収容する
弁作動室と、弁作動室に内蔵されて主弁に閉じ力を付与
する閉じ力付与手段と、弁作動室に真空圧を付与して主
弁に開き力を付与する制御部とを有して構成される真空
弁において、プラスチックにて形成された各構成部材が
互いに融着されてなるようにしたものである。SUMMARY OF THE INVENTION According to the present invention, there is provided a main valve for opening and closing a connecting portion between a suction pipe communicating with a tank and a vacuum discharge pipe communicating with a vacuum source, and a main valve for opening and closing the connecting portion. A valve working chamber that accommodates a plunger that is connected to the valve via a valve rod, a closing force applying unit that is built in the valve operating chamber and applies a closing force to the main valve, and a vacuum pressure is applied to the valve operating chamber. In the vacuum valve configured to have a control unit for applying an opening force to the main valve, the respective constituent members made of plastic are fused to each other.
【０００７】[0007]
【作用】真空弁の各構成部材を超音波融着、熱融着、高
周波融着、回転融着等により融着するものであるため、
多数のビス、インサート金具を用いる必要がなく、組立
作業性が良い。[Function] Since each component of the vacuum valve is fused by ultrasonic fusion, heat fusion, high frequency fusion, rotary fusion, etc.,
Assembling workability is good because there is no need to use many screws and insert fittings.
【０００８】[0008]
【実施例】図１は真空式汚水収集装置を示す模式図、図
２は真空弁を示す模式図、図３は真空弁の制御部を示す
断面図、図４は真空弁の制御部を示す他の断面図であ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic view showing a vacuum type waste water collecting device, FIG. 2 is a schematic view showing a vacuum valve, FIG. 3 is a sectional view showing a control part of a vacuum valve, and FIG. 4 is a control part of a vacuum valve. It is another sectional view.
【０００９】真空式汚水収集装置１０は、図１に示す如
く、タンク１１に汚水流入管１２を接続しており、タン
ク１１に連通する吸込み管１３と、真空源に連通する真
空排出管１４との間の連絡部を開閉可能とする真空弁１
５を有している。As shown in FIG. 1, the vacuum type sewage collecting apparatus 10 has a sewage inflow pipe 12 connected to a tank 11, a suction pipe 13 communicating with the tank 11, and a vacuum discharge pipe 14 communicating with a vacuum source. Vacuum valve that can open and close the connection between
Have five.
【００１０】即ち、各家庭等から排出される汚水は、自
然流下式の汚水流入管１２からタンク１１に流れ込む。
そして、汚水がタンク１１内に所定量溜ると、真空弁１
５が開き、タンク１１内の汚水は吸込み管１３から吸込
まれる。そして、この汚水は真空弁１５を通って真空排
出管１４に吸込まれ、真空ポンプ場の集水タンクに集め
られ、ひいては圧送ポンプによって下水処理場等へ送ら
れる。That is, the sewage discharged from each household or the like flows into the tank 11 from the sewage inflow pipe 12 of the natural flow type.
Then, when a predetermined amount of dirty water is accumulated in the tank 11, the vacuum valve 1
5 is opened, and the dirty water in the tank 11 is sucked through the suction pipe 13. Then, the sewage is sucked into the vacuum discharge pipe 14 through the vacuum valve 15, collected in the water collecting tank of the vacuum pump station, and then sent to the sewage treatment plant by the pressure pump.
【００１１】真空弁１５は、図１、図２に示す如く、第
１と第２の各ハウジング２１、２２をバンドクランプ２
３によって一体化して構成されており、主弁２４と、弁
作動室２５と、閉じ力付与ばね２６と、制御部２７とを
有して構成されている。The vacuum valve 15 connects the first and second housings 21 and 22 to the band clamp 2 as shown in FIGS.
3 is integrated and configured, and includes a main valve 24, a valve working chamber 25, a closing force imparting spring 26, and a control unit 27.
【００１２】主弁２４は上述の吸込み管１３と真空排出
管１４との連絡部を構成する連絡路２８を開閉する。The main valve 24 opens and closes a connection passage 28 which constitutes a connection between the suction pipe 13 and the vacuum discharge pipe 14.
【００１３】弁作動室２５は主弁２４と弁棒２９を介し
て連結されているカップ状のプランジャ３０をスライド
可能に収容する。The valve operating chamber 25 slidably accommodates a cup-shaped plunger 30 which is connected to the main valve 24 via a valve rod 29.
【００１４】閉じ力付与ばね２６は弁作動室２５のプラ
ンジャ３０より上室に内蔵されて、プランジャ３０にば
ね力を及ぼし、主弁２４に閉じ力を付与する。The closing force applying spring 26 is built in the chamber above the plunger 30 of the valve operating chamber 25 and exerts a spring force on the plunger 30 to apply a closing force to the main valve 24.
【００１５】制御部２７は、タンク１１内の汚水レベル
の上昇時に弁作動室２５に真空圧を付与して主弁２４に
開き力を付与し、真空弁１５を開状態として吸込み管１
３に真空排出管１４を導通せしめる。The control unit 27 applies a vacuum pressure to the valve operating chamber 25 and an opening force to the main valve 24 when the level of dirty water in the tank 11 rises, and opens the vacuum valve 15 to open the suction pipe 1.
The vacuum discharge pipe 14 is electrically connected to 3.
【００１６】然るに、真空弁１５の制御部２７は以下の
如くに構成されている。即ち、制御部２７は、図３、図
４に示す如く、第１〜第５の各ケース３１〜３５を一体
化して構成され、第４ケース３４を真空弁１５の第２ハ
ウジング２２にバンドクランプ３６によって一体化され
る。Therefore, the control unit 27 of the vacuum valve 15 is constructed as follows. That is, as shown in FIGS. 3 and 4, the control unit 27 is configured by integrating the first to fifth cases 31 to 35, and the fourth case 34 is band clamped to the second housing 22 of the vacuum valve 15. Are integrated by 36.
【００１７】そして、制御部２７は、タンク１１に連通
する液位検知管３７がホース３８を介して接続される液
位検知管接続口３９を有している。液位検知管接続口３
９は、第１ケース３１に接合される接続口ケース４０に
設けられている。The control unit 27 has a liquid level detection pipe connection port 39 to which a liquid level detection pipe 37 communicating with the tank 11 is connected via a hose 38. Liquid level detection tube connection port 3
9 is provided in the connection port case 40 joined to the first case 31.
【００１８】また、制御部２７は、真空排出管１４がホ
ース４１を介して接続される真空圧口４２を第３ケース
３３に設けている。The control unit 27 also has a vacuum pressure port 42, which is connected to the vacuum discharge pipe 14 via a hose 41, in the third case 33.
【００１９】また、制御部２７は、大気連通管４３がホ
ース４４を介して接続される大気圧口４５を第３ケース
３３に設けている。Further, the control unit 27 has an atmospheric pressure port 45 to which the atmosphere communication pipe 43 is connected via a hose 44 in the third case 33.
【００２０】尚、大気連通管４３はホース４６を介し
て、弁作動室２５のプランジャ３０より下室にも連通さ
れている（図２参照）。このとき、弁作動室２５のプラ
ンジャ３０より下室は、真空弁１５の第１と第２の各ハ
ウジング２１、２２間に挟持される下室ハウジング４７
により形成されており、下室ハウジング４７にはチェッ
ク弁４８が設けられ、下室ハウジング４７の弁棒２９貫
通部回りにはチェック弁カバー４９が接合されている。The atmosphere communication pipe 43 is also connected to a chamber below the plunger 30 of the valve operating chamber 25 via a hose 46 (see FIG. 2). At this time, the chamber below the plunger 30 of the valve operating chamber 25 is sandwiched between the first and second housings 21 and 22 of the vacuum valve 15 and is the lower chamber housing 47.
A check valve 48 is provided in the lower chamber housing 47, and a check valve cover 49 is joined to the lower chamber housing 47 around the valve rod 29 penetrating portion.
【００２１】また、制御部２７は、第１と第２の 2個の
ダイヤフラム５１、５２を後述する制御弁６８の動作方
向に並置している。The control unit 27 also arranges two first and second diaphragms 51 and 52 in parallel in the operation direction of a control valve 68 described later.
【００２２】第１ダイヤフラム５１は第１ケース３１と
第２ケース３２の合面間に配設され、液位検知管接続口
３９がダイヤフラム５３のオリフィスを介して連通する
液位検知管連通室５４と、大気圧口４５が第２ケース３
２と第３ケース３３に設けられている連絡路５５を介し
て連通する大気連通室５６とを仕切っている。尚、第１
ダイヤフラム５１の中心部には被覆部５７によって被覆
されているステム５８が固定され、ステム５８の頭部と
第１ケース３１に接合されているばね受プレート５９と
の間にはばね６０が介装されている。The first diaphragm 51 is disposed between the mating surfaces of the first case 31 and the second case 32, and the liquid level detection pipe connection port 39 communicates with the liquid level detection pipe communication chamber 54 through the orifice of the diaphragm 53. And the atmospheric pressure port 45 is the second case 3
2 and an atmosphere communication chamber 56 that communicates with each other via a communication path 55 provided in the third case 33. The first
A stem 58 covered with a covering 57 is fixed to the center of the diaphragm 51, and a spring 60 is interposed between the head of the stem 58 and a spring receiving plate 59 joined to the first case 31. Has been done.
【００２３】第２ダイヤフラム５２は第２ケース３２と
第３ケース３３の合面間に配設され、液位検知管接続口
３９が第１ダイヤフラム５１の液位検知管連通室５４、
第１ケース３１と第２ケース３２に設けられている連絡
路６１を介して連通する液位検知管連通室６２と、大気
圧口４５が連通する大気圧連通室６３とを仕切ってい
る。尚、第２ダイヤフラム５２の中心部には被覆部６４
によって被覆されているステム６５が固定され、ステム
６５の頭部と第２ケース３２に接合されているばね受プ
レート６６との間にはばね６７が介装されている。The second diaphragm 52 is disposed between the mating surfaces of the second case 32 and the third case 33, and the liquid level detecting pipe connecting port 39 is provided in the liquid level detecting pipe communicating chamber 54 of the first diaphragm 51.
A liquid level detection pipe communication chamber 62 that communicates with each other via a communication path 61 provided in the first case 31 and the second case 32 and an atmospheric pressure communication chamber 63 that communicates with the atmospheric pressure port 45 are partitioned. In addition, a covering portion 64 is provided at the center of the second diaphragm 52.
The stem 65 covered with is fixed, and a spring 67 is interposed between the head of the stem 65 and the spring receiving plate 66 joined to the second case 32.
【００２４】第１ダイヤフラム５１のステム５８と第２
ダイヤフラム５２のステム６５とは同軸配置され、互い
の軸力を伝達可能とされている。The stem 58 of the first diaphragm 51 and the second
It is coaxially arranged with the stem 65 of the diaphragm 52 and can transmit the mutual axial forces.
【００２５】また、制御部２７は、制御弁６８を備えて
いる。制御弁６８は、真空圧口４２を第５ケース３５に
設けてある連通口６９を介して弁作動室２５の上室に連
絡する真空通路７０の弁座７０Ａと、大気圧口４５を上
記連通口６９を介して弁作動室２５の上室に連絡する大
気通路７１の弁座７１Ａとを、交互に開閉する。真空通
路７０の弁座７０Ａは第４ケース３４に設けられ、大気
通路７１の弁座７１Ａは第５ケース３５に設けられ、両
弁座７０Ａ、７１Ａは互いに相対している。The control section 27 also includes a control valve 68. The control valve 68 connects the valve seat 70A of the vacuum passage 70, which communicates with the upper chamber of the valve working chamber 25, through the communication port 69 provided in the fifth case 35 to the atmospheric pressure port 45. The valve seat 71A of the atmosphere passage 71, which communicates with the upper chamber of the valve working chamber 25 through the port 69, is alternately opened and closed. The valve seat 70A of the vacuum passage 70 is provided in the fourth case 34, the valve seat 71A of the atmosphere passage 71 is provided in the fifth case 35, and both valve seats 70A, 71A face each other.
【００２６】そして、制御部２７は、両ダイヤフラム５
１、５２の変位を直接的に制御弁６８に伝達するべく、
制御弁６８の弁棒６８Ａを、第２ダイヤフラム５２のス
テム６５と同軸配置し、互いの軸力を伝達可能としてい
る。The control unit 27 then controls both diaphragms 5
In order to directly transmit the displacement of 1, 52 to the control valve 68,
The valve rod 68A of the control valve 68 is arranged coaxially with the stem 65 of the second diaphragm 52 so that mutual axial forces can be transmitted.
【００２７】尚、制御弁６８の弁棒６８Ａは被覆部７２
によって被覆され、弁棒６８Ａの頭部と第３ケース３３
に接合されているばね受プレート７３との間にはばね７
４が介装されている。The valve rod 68A of the control valve 68 has a covering portion 72.
Is covered with the head of the valve rod 68A and the third case 33.
The spring 7 is connected between the spring receiving plate 73 and the spring receiving plate 73.
4 is installed.
【００２８】このとき、第１と第２の各ダイヤフラム５
１、５２の変位力は、第１ダイヤフラム５１のステム５
８、第２ダイヤフラム５２のステム６５、及び制御弁６
８の弁棒６８Ａの３者間の軸力の伝達により、重ねて制
御弁６８に付与されることになる。At this time, the first and second diaphragms 5
The displacement force of 1, 52 is the stem 5 of the first diaphragm 51.
8, the stem 65 of the second diaphragm 52, and the control valve 6
By the transmission of the axial force among the three valve rods 68A of No. 8, they are repeatedly applied to the control valve 68.
【００２９】尚、制御部２７において、前述の大気通路
７１の一部は、第５ケース３５に形成されるものの、第
５ケース３５には大気通路７１の加工孔を閉塞するため
のプラグ７５、７６が接合されている。In the control unit 27, a part of the atmosphere passage 71 is formed in the fifth case 35, but the fifth case 35 has a plug 75 for closing the processing hole of the atmosphere passage 71. 76 are joined.
【００３０】然るに、真空弁１５の制御部２７は以下の
如く動作する。 (1) タンク１１内の汚水レベルが上昇すると、タンク１
１内の加圧空気が液位検知管３７を介して各ダイヤフラ
ム５１、５２の上側の液位検知管連通室５４、６２に作
用する。このとき、各ダイヤフラム５１、５２の下側の
大気連通室５６、６３は大気連通管４３を介して大気解
放されている。このため、各ダイヤフラム５１、５２の
両側室間に圧力差を生じ、各ダイヤフラム５１、５２は
下向き変位する。Therefore, the controller 27 of the vacuum valve 15 operates as follows. (1) When the dirty water level in the tank 11 rises, the tank 1
The pressurized air in the chamber 1 acts on the liquid level detecting pipe communicating chambers 54, 62 above the diaphragms 51, 52 via the liquid level detecting pipe 37. At this time, the atmosphere communication chambers 56 and 63 below the diaphragms 51 and 52 are open to the atmosphere via the atmosphere communication pipe 43. Therefore, a pressure difference is generated between both side chambers of the diaphragms 51 and 52, and the diaphragms 51 and 52 are displaced downward.
【００３１】(2) 各ダイヤフラム５１、５２の下向き変
位力は、それらのステム５８、６５を介して、制御弁６
８の弁棒６８Ａに作用し、制御弁６８を押し下げる。(2) The downward displacement force of each diaphragm 51, 52 is transmitted through the stems 58, 65 of the control valve 6
8 acting on the valve stem 68A of 8 and pushes down the control valve 68.
【００３２】尚、制御弁６８の押し下げ力は、両ダイヤ
フラム５１、５２の下向き変位力が重なり作用し、各ダ
イヤフラム５１、５２の単独での下向き変位力の２倍と
なる。The downward pressure force of the control valve 68 is doubled by the downward displacement force of both diaphragms 51 and 52, and is twice the downward displacement force of each diaphragm 51 and 52 alone.
【００３３】(3) 制御弁６８の押し下げにより、大気通
路７１の弁座７１Ａが閉じられ、弁作動室２５への大気
圧への作用が消失する。同時に、真空通路７０の弁座７
０Ａが開き、弁作動室２５に真空圧が作用する。これに
より、真空弁１５のプランジャ３０が閉じ力付与ばね２
６のばね力に抗して上向き移動し、主弁２４が開く結
果、タンク１１の吸込み管１３に真空排出管１４の真空
吸込み力が作用し、タンク１１内の汚水が真空排出管１
４に排出される。(3) By depressing the control valve 68, the valve seat 71A of the atmosphere passage 71 is closed, and the effect of the atmospheric pressure on the valve working chamber 25 disappears. At the same time, the valve seat 7 of the vacuum passage 70
0A opens, and the vacuum pressure acts on the valve working chamber 25. As a result, the plunger 30 of the vacuum valve 15 is closed by the closing force applying spring 2.
6 moves upward against the spring force of 6 and the main valve 24 opens. As a result, the vacuum suction force of the vacuum discharge pipe 14 acts on the suction pipe 13 of the tank 11, so that the dirty water in the tank 11 becomes dirty.
It is discharged to 4.
【００３４】(4) タンク１１内の汚水レベルが下がり、
各ダイヤフラム５１、５２の両側室間の圧力差がなくな
ると、制御弁６８は上向き復帰し、真空通路７０の弁座
７０Ａを閉じ、代わりに大気通路７１の弁座７１Ａを開
く。これにより、弁作動室２５に大気圧が作用し、真空
弁１５のプランジャ３０が閉じ力付与ばね２６のばね力
によって下向き移動し、主弁２４を閉じる。(4) The sewage level in the tank 11 is lowered,
When the pressure difference between the two chambers of the diaphragms 51 and 52 disappears, the control valve 68 returns upward, closes the valve seat 70A of the vacuum passage 70, and opens the valve seat 71A of the atmosphere passage 71 instead. As a result, atmospheric pressure acts on the valve working chamber 25, the plunger 30 of the vacuum valve 15 moves downward due to the spring force of the closing force applying spring 26, and the main valve 24 is closed.
【００３５】ここで、制御部２７にあっては、弁作動室
２５と、各ダイヤフラム５１、５２の下側の大気連通室
５６、６３とを連絡する通気路８０を第３ケース３３と
第４ケース３４に設けており、この通気路８０に主弁開
き時間調整用ニードル弁８１を設けている（図４参
照）。Here, in the control section 27, a vent passage 80 that connects the valve working chamber 25 and the atmosphere communication chambers 56, 63 below the diaphragms 51, 52 is provided with a third case 33 and a fourth case 33. It is provided in the case 34, and the main valve opening time adjusting needle valve 81 is provided in the air passage 80 (see FIG. 4).
【００３６】また、各ダイヤフラム５１、５２の受圧面
積は、制御弁６８の受圧面積の（65／2(ダイヤフラム個
数）倍以上に設定されている。The pressure receiving area of each diaphragm 51, 52 is set to be (65/2 (number of diaphragms)) times or more of the pressure receiving area of the control valve 68.
【００３７】尚、上述の65倍の根拠は、以下の通りであ
る。即ち、一般に使用されている真空下水道システムで
は、タンク１１内の汚水レベルが約100 〜150mm 上昇し
たときに真空弁が開作動して汚水を搬送する。また、こ
の汚水を搬送する真空下水管の真空圧は0.25〜0.65kgf/
cm2 の範囲で使用されている。The grounds for the above-mentioned 65 times are as follows. That is, in a commonly used vacuum sewer system, when the sewage level in the tank 11 rises by about 100 to 150 mm, the vacuum valve is opened to convey the sewage. The vacuum pressure of the vacuum sewer that conveys this sewage is 0.25 to 0.65 kgf /
Used in the cm 2 range.
【００３８】このため、制御弁６８は最大で0.65×制御
弁開口面積に相当する力で弁座面に押し付けられてお
り、この制御弁６８を開するために必要な力は汚水レベ
ルが最低の場合でも0.01×ダイヤフラム表面積に相当す
る力を要する。0.01は水柱100mm に相当するkgf/cm2 表
示の圧力である。For this reason, the control valve 68 is pressed against the valve seat surface with a force equivalent to 0.65 × control valve opening area at the maximum, and the force required to open the control valve 68 is the minimum sewage level. Even in this case, a force equivalent to 0.01 x diaphragm surface area is required. 0.01 is the pressure in kgf / cm 2 corresponding to 100 mm of water.
【００３９】即ち、That is,
【数１】 [Equation 1]
【００４０】然るに、真空弁１５にあっては、上述の各
構成部材を塩ビ、ポリオレフィン等のプラスチックにて
形成し、それら構成部材を互いに超音波融着、熱融着、
高周波融着、回転融着等により融着して組立てることと
している。具体的には、例えば、前述した第１ケース３
１と接続口ケース４０、下室ハウジング４７とチェック
弁カバー４９、第１ケース３１とばね受プレート５９、
第２ケース３２とばね受プレート６６、第３ケース３３
とばね受プレート７３、第５ケース３５と各プラグ７
５、７６の各接合部において、それらの構成部材をプラ
スチックにて形成し、それらの構成部材を互いに融着す
るものとしている。However, in the vacuum valve 15, each of the above-mentioned constituent members is made of plastic such as vinyl chloride and polyolefin, and these constituent members are ultrasonically fused, heat-sealed,
It is designed to be assembled by fusion by high-frequency fusion, rotation fusion, or the like. Specifically, for example, the above-mentioned first case 3
1, a connection port case 40, a lower chamber housing 47, a check valve cover 49, a first case 31, a spring receiving plate 59,
Second case 32, spring receiving plate 66, third case 33
And spring receiving plate 73, fifth case 35 and each plug 7
At each joint of Nos. 5 and 76, those constituent members are made of plastic, and the constituent members are fused to each other.
【００４１】以下、本実施例の作用について説明する。
真空弁１５の各構成部材を超音波融着、熱融着、高周波
融着、回転融着等により融着するものであるため、多数
のビス、インサート金具を用いる必要がなく、組立作業
性が良い。The operation of this embodiment will be described below.
Since each constituent member of the vacuum valve 15 is fused by ultrasonic fusion, heat fusion, high frequency fusion, rotary fusion, etc., it is not necessary to use a large number of screws and insert fittings, and assembling workability is improved. good.
【００４２】[0042]
【発明の効果】以上のように本発明によれば、真空弁の
組立作業性を良好とし、コスト低減を図ることができる
とともに、作動信頼性の低下を生じることのない真空弁
を得ることができる。As described above, according to the present invention, the workability of assembling the vacuum valve can be improved, the cost can be reduced, and the vacuum valve can be obtained without lowering the operational reliability. it can.
【図１】図１は真空式汚水収集装置を示す模式図であ
る。FIG. 1 is a schematic diagram showing a vacuum type waste water collecting device.
【図２】図２は真空弁を示す模式図である。FIG. 2 is a schematic diagram showing a vacuum valve.
【図３】図３は真空弁の制御部を示す断面図である。FIG. 3 is a cross-sectional view showing a control unit of a vacuum valve.
【図４】図４は真空弁の制御部を示す他の断面図であ
る。FIG. 4 is another cross-sectional view showing a control unit of the vacuum valve.
１１ タンク １３ 吸込み管 １４ 真空排出管 １５ 真空弁 ２４ 主弁 ２５ 弁作動室 ２６ 閉じ力付与ばね ２７ 制御部 11 Tank 13 Suction Pipe 14 Vacuum Evacuation Pipe 15 Vacuum Valve 24 Main Valve 25 Valve Working Chamber 26 Closing Force Applying Spring 27 Control Section
Claims (1)
通する真空排出管との間の連絡部を開閉可能とし、 上記連絡部を開閉する主弁と、主弁と弁棒を介して連結
されているプランジャを収容する弁作動室と、弁作動室
に内蔵されて主弁に閉じ力を付与する閉じ力付与手段
と、弁作動室に真空圧を付与して主弁に開き力を付与す
る制御部とを有して構成される真空弁において、 プラスチックにて形成された各構成部材が互いに融着さ
れてなることを特徴とする真空弁。1. A connection part between a suction pipe communicating with a tank and a vacuum discharge pipe communicating with a vacuum source is openable and closable, and a main valve for opening and closing the communication part is connected with a main valve and a valve stem. The valve working chamber that accommodates the plunger, the closing force applying means that is built in the valve operating chamber and applies the closing force to the main valve, and the vacuum pressure is applied to the valve operating chamber to apply the opening force to the main valve. A vacuum valve including a control unit for controlling the vacuum valve, wherein the constituent members made of plastic are fused to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15915992A JPH062786A (en) | 1992-06-18 | 1992-06-18 | Vacuum valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15915992A JPH062786A (en) | 1992-06-18 | 1992-06-18 | Vacuum valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH062786A true JPH062786A (en) | 1994-01-11 |
Family
ID=15687561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15915992A Pending JPH062786A (en) | 1992-06-18 | 1992-06-18 | Vacuum valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062786A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6249062B1 (en) | 1998-04-24 | 2001-06-19 | Nec Corporation | Method and apparatus of pseudogrounding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02503128A (en) * | 1988-02-04 | 1990-09-27 | ユーロイセキリミテッド | liquid level control device |
-
1992
- 1992-06-18 JP JP15915992A patent/JPH062786A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02503128A (en) * | 1988-02-04 | 1990-09-27 | ユーロイセキリミテッド | liquid level control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6249062B1 (en) | 1998-04-24 | 2001-06-19 | Nec Corporation | Method and apparatus of pseudogrounding |
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