JPS57117314A - Controller for sludge dehydrator - Google Patents
Controller for sludge dehydratorInfo
- Publication number
- JPS57117314A JPS57117314A JP56001111A JP111181A JPS57117314A JP S57117314 A JPS57117314 A JP S57117314A JP 56001111 A JP56001111 A JP 56001111A JP 111181 A JP111181 A JP 111181A JP S57117314 A JPS57117314 A JP S57117314A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- signal
- water content
- pump
- dehydrator
- 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
- 239000010802 sludge Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 230000001133 acceleration Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
Landscapes
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Abstract
PURPOSE: To remove a dehydrated cake with a constantly fixed waer content by regulating the vacuum in a vacuum dehydrator.
CONSTITUTION: A water content signal from a water content meter 5 for the dehydrated cake 9 discharged from the vacuum sludge dehydrator 1 and a vacuum signal from a vacuum monometer 6 provided for detecting the vacuum in the dehydrator 1 are fed into a ratio setter 7. When the water content of the dehydrated cake is higher than the water content value set on the setter 7, a signal for increasing the vacuum is outputted, while on the other hand, a signal for decreasing the vacuum is outputted when the detected water content is lower than the set value, and the output signal is fed into an indicating controller 8. When increasing the vacuum, a signal for acceleration is fed out from the indicating controller 8 to a vacuum pump 3 to increase the revolution speed of the pump 3, and the feeding of the signal is continued until a feedback value from a tachometer 4 conforms to the signal. On the other hand, when decreasing the vacuum, a signal for deceleration is fed out from the controller 8 to the pump 3 to lower the revolution speed of the pump 3, and the feeding-out of the signal is continued until the feedback value from the tachometer 4 conforms to the signal.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56001111A JPS57117314A (en) | 1981-01-09 | 1981-01-09 | Controller for sludge dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56001111A JPS57117314A (en) | 1981-01-09 | 1981-01-09 | Controller for sludge dehydrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57117314A true JPS57117314A (en) | 1982-07-21 |
Family
ID=11492350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56001111A Pending JPS57117314A (en) | 1981-01-09 | 1981-01-09 | Controller for sludge dehydrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57117314A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0967000A1 (en) * | 1998-06-25 | 1999-12-29 | Outokumpu Oyj | Method for producing a filter cake |
| US9901853B2 (en) | 2011-12-15 | 2018-02-27 | Andritz Oy | Method and apparatus for washing pulp by means of intensified suction |
-
1981
- 1981-01-09 JP JP56001111A patent/JPS57117314A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0967000A1 (en) * | 1998-06-25 | 1999-12-29 | Outokumpu Oyj | Method for producing a filter cake |
| US9901853B2 (en) | 2011-12-15 | 2018-02-27 | Andritz Oy | Method and apparatus for washing pulp by means of intensified suction |
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