JPS5510084A - Pressure control method of pump - Google Patents
Pressure control method of pumpInfo
- Publication number
- JPS5510084A JPS5510084A JP8382178A JP8382178A JPS5510084A JP S5510084 A JPS5510084 A JP S5510084A JP 8382178 A JP8382178 A JP 8382178A JP 8382178 A JP8382178 A JP 8382178A JP S5510084 A JPS5510084 A JP S5510084A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- sludge
- speed motor
- pump
- adjustable
- 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
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
PURPOSE: To maintain rotary characteristics and prevent intermittent running by detecting change of pump's pressure due to change of load current in variable speed motor to drive pump and also by controlling rotational frequency comparing the detected change of pressure with standard voltage equivalent to set pressure.
CONSTITUTION: Shaft torque of pressure pump 4 is increased as pressure of pressure hydroextractor 6 is rising by sludge 2 flowing from sludge pipe 5, and also increase is made in load current of power line 7 in adjustable-speed motor 3 inclusive of detecting output of current detector 8. Output of relative amplifier 9 and output of control panel 11 are decreased when approached to electric signal as set by pressure setter 10. Thus transport quantity of sludge is decreased and the pressure is maintained at the set pressure due to decrease of adjustable-speed motor 3. With decrease of pressure, rotating frequency of adjustable-speed motor is increased on the contrary and also transport quantity of sludge is increased. Sludge transport pressure of pressure hydro-extractor is maintained by the set pressure.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8382178A JPS5510084A (en) | 1978-07-10 | 1978-07-10 | Pressure control method of pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8382178A JPS5510084A (en) | 1978-07-10 | 1978-07-10 | Pressure control method of pump |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5510084A true JPS5510084A (en) | 1980-01-24 |
Family
ID=13813347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8382178A Pending JPS5510084A (en) | 1978-07-10 | 1978-07-10 | Pressure control method of pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5510084A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59154113A (en) * | 1983-02-21 | 1984-09-03 | Sumitomo Bakelite Co Ltd | Ultrafiltering method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4979029A (en) * | 1972-12-07 | 1974-07-30 |
-
1978
- 1978-07-10 JP JP8382178A patent/JPS5510084A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4979029A (en) * | 1972-12-07 | 1974-07-30 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59154113A (en) * | 1983-02-21 | 1984-09-03 | Sumitomo Bakelite Co Ltd | Ultrafiltering method |
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