JPS5531433A - Controll device for washing filter cloth of sludge dehydrator - Google Patents

Controll device for washing filter cloth of sludge dehydrator

Info

Publication number
JPS5531433A
JPS5531433A JP10438878A JP10438878A JPS5531433A JP S5531433 A JPS5531433 A JP S5531433A JP 10438878 A JP10438878 A JP 10438878A JP 10438878 A JP10438878 A JP 10438878A JP S5531433 A JPS5531433 A JP S5531433A
Authority
JP
Japan
Prior art keywords
sludge
filter cloth
detector
dehydrator
pressure
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
Application number
JP10438878A
Other languages
Japanese (ja)
Inventor
Tadashi Tsukada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10438878A priority Critical patent/JPS5531433A/en
Publication of JPS5531433A publication Critical patent/JPS5531433A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Filtration Of Liquid (AREA)

Abstract

PURPOSE: To wash filter cloth automatically and timely by arranging a sludge dehydrator provided with detectors for sludge-inflow rate, sludge concentration, pressure, etc. and also with an arithmetic control unit by signals of the detector.
CONSTITUTION: While sludge 1 is introduced into a dehydrator 3 by means of a pressure pump 2, each signal from a sludge-inflow detector 4, a sludge temperature detector 4 and a pressure detector 6 is input into an arithmetic controlling unit 7. Whenever a pump 2 is operated, the operation Qd=Qi×D is executed in the arithmetic unit 7, wherein Qd is an amount of sludge introduced during the time during which press-introducing pressure Pi reach a set point Po. Qd is compared with a required sludge amount Q'd. When Qd<Q'd, cloth washing demand signal is output to a sequence circuit 8. After cake extraction step is completed, the washing of the filter cloth is carried out. As compared with the filter cloth washing controll by the judgement of an operator, the dehydrator can effectively be operated.
COPYRIGHT: (C)1980,JPO&Japio
JP10438878A 1978-08-29 1978-08-29 Controll device for washing filter cloth of sludge dehydrator Pending JPS5531433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10438878A JPS5531433A (en) 1978-08-29 1978-08-29 Controll device for washing filter cloth of sludge dehydrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10438878A JPS5531433A (en) 1978-08-29 1978-08-29 Controll device for washing filter cloth of sludge dehydrator

Publications (1)

Publication Number Publication Date
JPS5531433A true JPS5531433A (en) 1980-03-05

Family

ID=14379357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10438878A Pending JPS5531433A (en) 1978-08-29 1978-08-29 Controll device for washing filter cloth of sludge dehydrator

Country Status (1)

Country Link
JP (1) JPS5531433A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61228375A (en) * 1985-04-03 1986-10-11 Daido Shingo Kk Apparatus for detecting obstacle of double system railroad crossing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5043569A (en) * 1973-08-21 1975-04-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5043569A (en) * 1973-08-21 1975-04-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61228375A (en) * 1985-04-03 1986-10-11 Daido Shingo Kk Apparatus for detecting obstacle of double system railroad crossing

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