GB1446710A - Filtering - Google Patents
FilteringInfo
- Publication number
- GB1446710A GB1446710A GB4006472A GB4006472A GB1446710A GB 1446710 A GB1446710 A GB 1446710A GB 4006472 A GB4006472 A GB 4006472A GB 4006472 A GB4006472 A GB 4006472A GB 1446710 A GB1446710 A GB 1446710A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- support
- backing
- band
- plate
- 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.)
- Expired
Links
- 238000001914 filtration Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 abstract 2
- 239000004033 plastic Substances 0.000 abstract 2
- 229920003023 plastic Polymers 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 abstract 1
- 230000002706 hydrostatic effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000012812 sealant material Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/09—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with filtering bands, e.g. movable between filtering operations
- B01D29/096—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
- B01D29/84—Handling the filter cake in the filter for purposes other than for regenerating for drying by gases or by heating
- B01D29/846—Handling the filter cake in the filter for purposes other than for regenerating for drying by gases or by heating by indirect heat-exchange
-
- 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
- B01D35/18—Heating or cooling the filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/69—Filters or screens for the moulding material
- B29C48/692—Filters or screens for the moulding material in the form of webs displaceable for using adjacent areas consecutively
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtration Of Liquid (AREA)
Abstract
1446710 Moving band filter P G KALMAN 29 Aug 1973 [29 Aug 1972] 40064/72 Heading BID In a filter device for molten plastics wherein one or more filter elements, e.g. bands 5 of woven steel or random metal or glass-fibre matrices, are moved intermittently across a filter passage 2 through slots in which slats are effected by semi-solid plugs 28 of the plastics being filtered or other sealant material (such as described in Specifications 1181075, 1285702, 1285703 or 1433867), the filter element(s) is supported in the passage and moved thereacross by a backing support 7 reciprocal in the direction of movement of the band, means being provided to allow the filter element to move with the support in one direction of reciprocation of the latter but to prevent movement of the band with the support upon return of the latter in the other direction. In Figure 2A, a toggle mechanism 22 is provided for reciprocating the support 7 and comprises a frame 23 pivotally connected to the support and to hydraulic cylinders 26. Toggle jaw 27 engages the solidified plug 28 and is biased towards the plug by leaf spring 29. Similarly biassed toggle jaws 210 carried on a frame 211 affixed to body 1 prevent the filter and plug from sliding back when the backing plate 7 is retracted. The filter and backing support are further supported in the filtering passage by perforated breaker plate 6. In a further embodiment (Fig. 3 not shown) the upper side of the filter band is protected by a cover plate (31), perforated in the region of the passage 2 and reciprocal with the backing plate, the filter band being sandwiched between the two, and the two sets of toggle jaws are replaced by a pair of serated jaws which grip the filter during one direction of reciprocation of the plate 7 but release it for the return movement. An alternative method of preventing return of the filter with the backing plate on the return stroke is to clamp the filter at the exit port during the retraction by means of a hydraulic or pneumatic cylinder (Figs. 4A or 4B not shown) or by means of spring loaded eccentric grippers (Fig. 4C not shown). In a further embodiment, (Figure 5 not shown), the backing support is enclosed within the body 1 and does not extend to the inlet or outlet ports and is reciproated by a push rod (51) slidably engaged in the breaker plate 6. The push rod may be replaced by a piston integral with the backing support and reciprocated by pneumatic means (Fig. 9 not shown). Figure 6 shows two filter bands 111, 112 similarly mounted for reciprocation by push rod 119. The filter apparatus in this case comprising two opposed filtering passages with a common filtrate collection chamber 113 between the filters. The linkages 117 provide for the backing supports 116 to be pushed against the filter bands in one direction of reciprocation but released therefrom on the return movement. A further method of releasing the filter band from the backing support for the return reciprocation involves raising a further support element 61 (Fig. 7) through slits in the breaker plate to lift the plate band clear of the backing support. During the movement of the filter band, the support 61 is lowered so that the filter band is clamped against the backing support 7 by hydrostatic pressure in passage 2. The further support element may be pneumatically raised and lowered (Figure 8A not shown).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4006472A GB1446710A (en) | 1972-08-29 | 1972-08-29 | Filtering |
US05/389,183 US3940335A (en) | 1972-08-29 | 1973-08-17 | Filtering process and apparatus |
IT52221/73A IT990411B (en) | 1972-08-29 | 1973-08-29 | DEVICE AND PROCEDURE FOR FILTERING FLUID SUBSTANCES |
DE2343553A DE2343553C3 (en) | 1972-08-29 | 1973-08-29 | Filter device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4006472A GB1446710A (en) | 1972-08-29 | 1972-08-29 | Filtering |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1446710A true GB1446710A (en) | 1976-08-18 |
Family
ID=10413006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4006472A Expired GB1446710A (en) | 1972-08-29 | 1972-08-29 | Filtering |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2343553C3 (en) |
GB (1) | GB1446710A (en) |
IT (1) | IT990411B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0976525A1 (en) * | 1998-07-28 | 2000-02-02 | PREVIERO N. S.r.l. | Filter device for fluid plastic material |
EP2789447A1 (en) * | 2013-04-12 | 2014-10-15 | Alfatech S.R.L. | Automatic screen changer device |
CN107738431A (en) * | 2017-11-29 | 2018-02-27 | 河南安吉塑料机械有限公司 | A kind of backwash net band net-changing device |
CN109624260A (en) * | 2019-02-10 | 2019-04-16 | 北京工商大学 | A kind of plastic extruder of automatic cycle switching cleaning strainer |
CN115337706A (en) * | 2022-08-09 | 2022-11-15 | 安徽三扬新材料科技有限公司 | A filter edulcoration device for production of diesel oil antiwear agent |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3535491C1 (en) * | 1985-10-04 | 1987-04-02 | Lucian Britchi | Device for cleaning viscous materials |
DE19722352A1 (en) * | 1997-05-28 | 1997-11-06 | Hatec | Sieve band strainer particularly suitable for polymers and elastomers in extrusion |
CN112354233B (en) * | 2020-10-22 | 2022-08-09 | 河北恒华盛世环保科技股份有限公司 | A purify recovery plant for sewage treatment |
-
1972
- 1972-08-29 GB GB4006472A patent/GB1446710A/en not_active Expired
-
1973
- 1973-08-29 IT IT52221/73A patent/IT990411B/en active
- 1973-08-29 DE DE2343553A patent/DE2343553C3/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0976525A1 (en) * | 1998-07-28 | 2000-02-02 | PREVIERO N. S.r.l. | Filter device for fluid plastic material |
US6216880B1 (en) | 1998-07-28 | 2001-04-17 | Previero N. S.R.L. | Filter device for flowable plastic material |
EP2789447A1 (en) * | 2013-04-12 | 2014-10-15 | Alfatech S.R.L. | Automatic screen changer device |
US10307953B2 (en) | 2013-04-12 | 2019-06-04 | Alfatech S.R.L. | Automatic screen changer device |
CN107738431A (en) * | 2017-11-29 | 2018-02-27 | 河南安吉塑料机械有限公司 | A kind of backwash net band net-changing device |
CN109624260A (en) * | 2019-02-10 | 2019-04-16 | 北京工商大学 | A kind of plastic extruder of automatic cycle switching cleaning strainer |
CN109624260B (en) * | 2019-02-10 | 2024-02-06 | 北京工商大学 | Plastic extruder capable of automatically and circularly switching and cleaning filter screen |
CN115337706A (en) * | 2022-08-09 | 2022-11-15 | 安徽三扬新材料科技有限公司 | A filter edulcoration device for production of diesel oil antiwear agent |
CN115337706B (en) * | 2022-08-09 | 2024-06-11 | 新疆大森化工有限公司 | A filter edulcoration device for production of diesel antiwear agent |
Also Published As
Publication number | Publication date |
---|---|
DE2343553C3 (en) | 1980-07-17 |
IT990411B (en) | 1975-06-20 |
DE2343553A1 (en) | 1974-03-07 |
DE2343553B2 (en) | 1979-11-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |