FR2259638A1 - Indication of dirtiness of filter - using press difference, with variable flow rate through filter - Google Patents

Indication of dirtiness of filter - using press difference, with variable flow rate through filter

Info

Publication number
FR2259638A1
FR2259638A1 FR7503030A FR7503030A FR2259638A1 FR 2259638 A1 FR2259638 A1 FR 2259638A1 FR 7503030 A FR7503030 A FR 7503030A FR 7503030 A FR7503030 A FR 7503030A FR 2259638 A1 FR2259638 A1 FR 2259638A1
Authority
FR
France
Prior art keywords
filter
flow rate
dirtiness
indication
variable flow
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.)
Granted
Application number
FR7503030A
Other languages
French (fr)
Other versions
FR2259638B1 (en
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.)
Ecolab Engineering GmbH
Original Assignee
Lang Apparatebau GmbH
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 Lang Apparatebau GmbH filed Critical Lang Apparatebau GmbH
Publication of FR2259638A1 publication Critical patent/FR2259638A1/en
Application granted granted Critical
Publication of FR2259638B1 publication Critical patent/FR2259638B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Measuring Volume Flow (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

A device for indicating the dirtiness of a filter has a membrane moved against an adjustable spring by the press. difference across the filter and a means for indicating the position of the membrane. The impulse lines connecting the upstream and downstream sides of the filter with either side of the membrane are connected through a piston valve whose position is governed by the flow rate of water through the filter. The piston valve short circuits the impulse lines, equalising the pressures on either side of the diaphragm, when the flow rate is above or below the selected value.
FR7503030A 1974-01-31 1975-01-31 Indication of dirtiness of filter - using press difference, with variable flow rate through filter Granted FR2259638A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742404453 DE2404453A1 (en) 1974-01-31 1974-01-31 DISPLAY UNIT FOR THE DEGREE OF POLLUTION OF FILTERS

Publications (2)

Publication Number Publication Date
FR2259638A1 true FR2259638A1 (en) 1975-08-29
FR2259638B1 FR2259638B1 (en) 1977-04-15

Family

ID=5906109

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7503030A Granted FR2259638A1 (en) 1974-01-31 1975-01-31 Indication of dirtiness of filter - using press difference, with variable flow rate through filter

Country Status (3)

Country Link
AT (1) AT338835B (en)
DE (1) DE2404453A1 (en)
FR (1) FR2259638A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818385A (en) * 1987-08-31 1989-04-04 Medley Iii Frank W Filter with high pressure indicator

Also Published As

Publication number Publication date
AT338835B (en) 1977-09-12
DE2404453A1 (en) 1975-08-07
ATA66275A (en) 1977-01-15
FR2259638B1 (en) 1977-04-15

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Legal Events

Date Code Title Description
ST Notification of lapse