JPH0281975U

JPH0281975U -

Info

Publication number: JPH0281975U
Application number: JP16220688U
Authority: JP
Priority date: 1988-12-13
Filing date: 1988-12-13
Publication date: 1990-06-25
Anticipated expiration: 2003-12-13
Also published as: JPH0710139Y2

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は実施例のボールバルブの断面図、第２
図はボールバルブ装置の一部を示す側面図、第３
図のａ図からｄ図はボールバルブの作用を示す断
面図、第４図は制御回路図、第５図は上記制御回
路のシーケンスチヤート、第６図のａ図からｃ図
は他の実施例の作用を示す断面図、第７図は第６
図のシーケンスチヤートである。１……弁本体、２……弁室、３……ポート、４
……弁体、５……ボンネット、６……弁軸、１０
……シートリング、１１……ストツプリング、１
２，１３……段差、１４……内向き段差面、１５
……外向き段差面、１６，１７……Ｏリング、１
８……圧力室、１９，２０……Ｏリング、２１…
…圧力室、２２，２３……供給ポート、２６……
エアシリンダ、２８……主電磁弁、３１……補助
電磁弁。 Figure 1 is a sectional view of the ball valve of the embodiment, Figure 2 is a sectional view of the ball valve of the embodiment.
The figure is a side view showing a part of the ball valve device.
Figures a to d in the figure are cross-sectional views showing the action of the ball valve, Figure 4 is a control circuit diagram, Figure 5 is a sequence chart of the control circuit, and Figures a to c in Figure 6 are other embodiments. 7 is a sectional view showing the effect of
This is a sequence chart of the figure. 1... Valve body, 2... Valve chamber, 3... Port, 4
... Valve body, 5 ... Bonnet, 6 ... Valve stem, 10
... Seat ring, 11 ... Stop ring, 1
2, 13...Step, 14...Inward step surface, 15
...Outward step surface, 16, 17...O ring, 1
8...Pressure chamber, 19, 20...O ring, 21...
...Pressure chamber, 22, 23... Supply port, 26...
Air cylinder, 28...main solenoid valve, 31...auxiliary solenoid valve.

Claims

【実用新案登録請求の範囲】 (1) 弁本体の弁室に連通する対向一対のポート
を設け、上記弁室にボール形の弁体を挿入すると
共に、弁体の弁軸を弁室に被せたボンネツトに貫
通せしめ、上記弁体の弁孔のまわりに押し付けら
れるシートリングを上記各ポートに挿入し、各ポ
ート端部にストツプリングを嵌合してなるボール
バルブにおいて、弁体とストツプリングとの間に
シートリングが進退しうる間隙を設け、シートリ
ング外周面のポート内側寄りと外側寄りの２箇所
にそれぞれポートの内側と外側に対向した段差面
を設け、各段差面の内外両側にシール手段を設け
て２つの圧力室を形成し、各圧力室に圧力媒体の
供給ポートを設けたことを特徴とするボールバル
ブ。 (2) 請求項１に記載のボールバルブにおいて、
弁体の開閉アクチユエータと、そのアクチユエー
タに供給する圧力媒体を制御する主電磁弁、及び
シートリングの各圧力室に供給する圧力媒体を制
御する補助電磁弁を設け、上記の主電磁弁と補助
電磁弁の制御回路に、開弁時において補助電磁弁
の駆動後一定の遅延時間をおいて主電磁弁を駆動
する第１のタイマーと、閉弁時において上記のア
クチユエータの閉弁方向のストローク終了後一定
の遅延時間をおいて補助電磁弁を復帰せしめる第
２のタイマーとを設けたことを特徴とするボール
バルブ装置。[Claims for Utility Model Registration] (1) A pair of opposing ports communicating with the valve chamber of the valve body is provided, a ball-shaped valve body is inserted into the valve chamber, and the valve stem of the valve body is placed over the valve chamber. In a ball valve, a seat ring is inserted into each of the ports, and a stop ring is fitted to the end of each port. A gap is provided in which the seat ring can move forward and backward, step surfaces are provided at two locations on the outer peripheral surface of the seat ring, one on the inside and one on the outside of the port, facing the inside and outside of the port, respectively, and sealing means are provided on both the inside and outside of each step surface. A ball valve characterized in that the ball valve is provided to form two pressure chambers, and each pressure chamber is provided with a pressure medium supply port. (2) In the ball valve according to claim 1,
An opening/closing actuator for the valve body, a main solenoid valve that controls the pressure medium supplied to the actuator, and an auxiliary solenoid valve that controls the pressure medium supplied to each pressure chamber of the seat ring are provided. The control circuit of the valve includes a first timer that drives the main solenoid valve after a certain delay time after driving the auxiliary solenoid valve when the valve is opened, and a timer that drives the main solenoid valve after a certain delay time after driving the auxiliary solenoid valve when the valve is opened, and a timer that drives the main solenoid valve after a certain delay time after driving the auxiliary solenoid valve when the valve is closed. A ball valve device comprising a second timer for returning the auxiliary solenoid valve after a certain delay time.