JPH03112182U - - Google Patents
Info
- Publication number
- JPH03112182U JPH03112182U JP2145990U JP2145990U JPH03112182U JP H03112182 U JPH03112182 U JP H03112182U JP 2145990 U JP2145990 U JP 2145990U JP 2145990 U JP2145990 U JP 2145990U JP H03112182 U JPH03112182 U JP H03112182U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- switch
- valve
- opens
- necessary
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例における部分制御
回路図、第２図は第１図の回路又は従来回路が組
み込まれている電動弁の一例の一部断面正面図、
第３図は従来装置の部分制御回路図である。
５……弁棒、６……バツクシート、１２……開
スイツチ（ＰＢ０）、１３……開リミツトスイツ
チ（ｈｂ）、１４……開トルクスイツチ（Ｔ０）
、１５……直列回路、２１……切換スイツチ（キ
ー付きスイツチ）、２２……並列回路。
FIG. 1 is a partial control circuit diagram of an embodiment of this invention, and FIG. 2 is a partially sectional front view of an example of an electric valve incorporating the circuit of FIG. 1 or a conventional circuit.
FIG. 3 is a partial control circuit diagram of a conventional device. 5... Valve stem, 6... Back seat, 12... Open switch (PB 0 ), 13... Open limit switch (hb), 14... Open torque switch (T 0 )
, 15...Series circuit, 21...Changing switch (switch with key), 22...Parallel circuit.
Claims (1)
止させる開リミツトスイツチと、弁棒に発生する
応力によつて回路を開き弁開動作を停止させる開
トルクスイツチとを直列に備えており、上記開リ
ミツトスイツチと並列に設けられると共に必要時
手動若しくは付加される信号電流によつて回路を
閉じる常時回路開の切換スイツチを備えており、
上記切換スイツチによつて上記開トルクスイツチ
を必要時に作動させるように構成していることを
特徴とする電動弁。 Equipped in series with an open limit switch that detects the position of the valve stem and opens a circuit to stop the valve opening operation, and an opening torque switch that opens the circuit and stops the valve opening operation by the stress generated on the valve stem. It is provided with a changeover switch that is installed in parallel with the open limit switch and closes the circuit manually or by an added signal current when necessary, so that the circuit is always open.
An electric valve characterized in that the opening torque switch is operated by the changeover switch when necessary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2145990U JPH0726617Y2 (en) | 1990-03-05 | 1990-03-05 | Motorized valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2145990U JPH0726617Y2 (en) | 1990-03-05 | 1990-03-05 | Motorized valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03112182U true JPH03112182U (en) | 1991-11-15 |
| JPH0726617Y2 JPH0726617Y2 (en) | 1995-06-14 |
Family
ID=31524506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2145990U Expired - Lifetime JPH0726617Y2 (en) | 1990-03-05 | 1990-03-05 | Motorized valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726617Y2 (en) |
-
1990
- 1990-03-05 JP JP2145990U patent/JPH0726617Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0726617Y2 (en) | 1995-06-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |