JPS63106905U - - Google Patents
Info
- Publication number
- JPS63106905U JPS63106905U JP20141786U JP20141786U JPS63106905U JP S63106905 U JPS63106905 U JP S63106905U JP 20141786 U JP20141786 U JP 20141786U JP 20141786 U JP20141786 U JP 20141786U JP S63106905 U JPS63106905 U JP S63106905U
- Authority
- JP
- Japan
- Prior art keywords
- spool
- control
- import
- flow port
- pilot chamber
- 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.)
- Pending
Links
- 230000008676 import Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Landscapes
- Servomotors (AREA)
Description
図面第1,2図はこの考案の実施例を示すもの
で、第1図はプツシユロツドを最大に突出させた
状態の断面図、第2図はプツシユロツドを完全に
退避させた状態の断面図、第3図は従来の流量制
御弁の断面図である。
a…弁本体、1…インポート、2…制御流ポー
ト、3…余剰流ポート、4…スプール孔、8…パ
イロツト室、9…スプリング室、d…保持装置。
Figures 1 and 2 show an embodiment of this invention. Figure 1 is a cross-sectional view of the push rod with the push rod protruded to its maximum extent, Figure 2 is a cross-sectional view of the push rod with the push rod fully retracted, and Figure 2 is a cross-sectional view of the push rod with the push rod fully retracted. FIG. 3 is a sectional view of a conventional flow control valve. a... Valve body, 1... Import, 2... Control flow port, 3... Surplus flow port, 4... Spool hole, 8... Pilot chamber, 9... Spring chamber, d... Holding device.
Claims (1)
流ポートと、スプール孔とを形成し、このスプー
ル孔にはスプールを摺動自在に内装し、このスプ
ールの一端をパイロツト室に臨ませ、他端を上記
制御流ポートに連通するスプリング室に臨ませる
とともに、このスプールの外周には上記インポー
トと常時連通する環状溝を形成し、しかも、この
環状溝とスプリング室とを連通させる通路過程に
制御オリフイスを形成し、このオリフイスの上流
側の圧力を上記パイロツト室に作用させ、このパ
イロツト室の圧力に応じて、当該スプールが移動
して、上記制御流ポートの開口面積を制御すると
ともに、環状溝を介してインポートと余剰流ポー
トを連通させる構成にした流量制御弁において、
上記制御流ポートを全閉させ、かつ、インポート
と余剰流ポートとを全開状態で連通させる位置に
スプールを停止させる保持装置を設けた流量制御
弁。 An import port, a control flow port, a surplus flow port, and a spool hole are formed in the valve body, and a spool is slidably installed in the spool hole, with one end of the spool facing the pilot chamber, and the other end facing the pilot chamber. facing the spring chamber communicating with the control flow port, an annular groove is formed on the outer periphery of the spool that constantly communicates with the import, and a control orifice is provided in the path that communicates the annular groove with the spring chamber. The pressure on the upstream side of this orifice is applied to the pilot chamber, and the spool moves in response to the pressure in the pilot chamber to control the opening area of the control flow port and to open the annular groove. In the flow control valve configured to communicate the import and surplus flow ports through the
A flow control valve provided with a holding device that stops the spool at a position where the control flow port is fully closed and the import and surplus flow ports are fully open and communicated with each other.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20141786U JPS63106905U (en) | 1986-12-29 | 1986-12-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20141786U JPS63106905U (en) | 1986-12-29 | 1986-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63106905U true JPS63106905U (en) | 1988-07-11 |
Family
ID=31164848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20141786U Pending JPS63106905U (en) | 1986-12-29 | 1986-12-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63106905U (en) |
-
1986
- 1986-12-29 JP JP20141786U patent/JPS63106905U/ja active Pending