JPH0475167U - - Google Patents
Info
- Publication number
- JPH0475167U JPH0475167U JP11722490U JP11722490U JPH0475167U JP H0475167 U JPH0475167 U JP H0475167U JP 11722490 U JP11722490 U JP 11722490U JP 11722490 U JP11722490 U JP 11722490U JP H0475167 U JPH0475167 U JP H0475167U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- viscous fluid
- pump
- operational amplifier
- command
- 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
- 239000012530 fluid Substances 0.000 claims 4
- 238000005086 pumping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Description
図は本考案の一実施例としてコンクリートポン
プの場合について示す概略図である。
１，２……主油圧シリンダ、３，４……コンク
リート輸送シリンダ、１５……電磁式四方弁、１
６……油ポンプ、１８……切換回路、２１……電
磁式四方弁、２４……輸送管、２５……演算アン
プ、２６……切換弁、ＳＷ１，ＳＷ２……近接ス
イツチ、ＰＳ……圧力スイツチ。
The figure is a schematic diagram showing the case of a concrete pump as an embodiment of the present invention. 1, 2... Main hydraulic cylinder, 3, 4... Concrete transport cylinder, 15... Solenoid four-way valve, 1
6...Oil pump, 18...Switching circuit, 21...Solenoid four-way valve, 24...Transport pipe, 25...Operation amplifier, 26...Switching valve, SW1, SW2...Proximity switch, PS...Pressure Switch.
Claims (1)
四方弁を介して交互に供給し、上記２本の油圧シ
リンダを交互に前進、後退させて粘性流体を圧送
させるようにして粘性流体ポンプにおいて、粘性
流体の圧送に必要な圧力の演算を行い且つ該圧力
以上の圧力になつたときに指令を発する演算アン
プを備え、上記四方弁を切り換える切換回路の途
中に切換弁を組み込み、該切換弁を上記演算アン
プからの指令により切り換えるようにすると共に
、上記油ポンプ吐出側に設けた圧力スイツチを演
算アンプに接続してなることを特徴とする粘性流
体ポンプ。 In the viscous fluid pump, pressure oil from the oil pump is alternately supplied to two main hydraulic cylinders via a four-way valve, and the two hydraulic cylinders are alternately moved forward and backward to pump the viscous fluid. The switching valve is equipped with an operational amplifier that calculates the pressure necessary for pumping the viscous fluid and issues a command when the pressure exceeds the pressure, and incorporates a switching valve in the middle of the switching circuit that switches the four-way valve. A viscous fluid pump characterized in that the pressure switch is switched by a command from the operational amplifier, and a pressure switch provided on the discharge side of the oil pump is connected to the operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11722490U JPH0475167U (en) | 1990-11-09 | 1990-11-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11722490U JPH0475167U (en) | 1990-11-09 | 1990-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0475167U true JPH0475167U (en) | 1992-06-30 |
Family
ID=31865108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11722490U Pending JPH0475167U (en) | 1990-11-09 | 1990-11-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0475167U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS507702B1 (en) * | 1968-12-10 | 1975-03-28 |
-
1990
- 1990-11-09 JP JP11722490U patent/JPH0475167U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS507702B1 (en) * | 1968-12-10 | 1975-03-28 |