GB1394237A - Apparatus for pumping highly viscous materials - Google Patents
Apparatus for pumping highly viscous materialsInfo
- Publication number
- GB1394237A GB1394237A GB2788372A GB2788372A GB1394237A GB 1394237 A GB1394237 A GB 1394237A GB 2788372 A GB2788372 A GB 2788372A GB 2788372 A GB2788372 A GB 2788372A GB 1394237 A GB1394237 A GB 1394237A
- Authority
- GB
- United Kingdom
- Prior art keywords
- feed member
- smooth
- opening
- shaft
- stationary feed
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/02—Axial-flow pumps of screw type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
1394237 Feeding moulding machine DOW CHEMICAL CO 14 June 1972 27883/72 Heading B5A [Also in Divisions F1 and B8] A roll pump for pumping viscous material through an opening in means for containing the material comprises a stationary feed member mounted within the container and co-operating with a body such that rotation of the latter causes the feed member to scrape viscous material form the body and force it through the opening. In one arrangement the pump is mounted at the base of a polymer devolatilizer 5 and comprises a stationary feed member 17 formed by a double right helix, the flights 29, 30 of which have downwardly extending peripheral flanges 25. Member 17 co-operates with a smooth cylindrical shaft 19 such that when driving means 12 rotates the latter polymer is scraped from the shaft surface and forced through opening 8 into a screw transfer device 11 forming a continuation of the shaft and thence through outlet 13, e.g. to a pelletizer, extruder or compression-moulding apparatus. In a modification (Fig. 2, not shown) the stationary feed member is a single-turn right helix (17a) having a partially enclosing cylindrical wall (31). In another arrangement (Figs. 3, 3A, not shown) the feed member is formed by four angularly spaced inclined scoop-like scraping pieces (17b). The smooth cylindrical shaft 19 may be replaced by one having a square, triangular or hexagonal shape with a smooth or roughened surface. The surface of the stationary feed member may be smooth or roughened and may be coated with p.t.f.e.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2788372A GB1394237A (en) | 1972-06-14 | 1972-06-14 | Apparatus for pumping highly viscous materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2788372A GB1394237A (en) | 1972-06-14 | 1972-06-14 | Apparatus for pumping highly viscous materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1394237A true GB1394237A (en) | 1975-05-14 |
Family
ID=10266832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2788372A Expired GB1394237A (en) | 1972-06-14 | 1972-06-14 | Apparatus for pumping highly viscous materials |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1394237A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4830584A (en) * | 1985-03-19 | 1989-05-16 | Frank Mohn | Pump or compressor unit |
GB2301795A (en) * | 1995-06-07 | 1996-12-18 | Trim Masters Int Ltd | Polymer extruder feed with wiping action |
-
1972
- 1972-06-14 GB GB2788372A patent/GB1394237A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4830584A (en) * | 1985-03-19 | 1989-05-16 | Frank Mohn | Pump or compressor unit |
GB2301795A (en) * | 1995-06-07 | 1996-12-18 | Trim Masters Int Ltd | Polymer extruder feed with wiping action |
GB2301795B (en) * | 1995-06-07 | 2000-01-19 | Trim Masters Int Ltd | Polymer processing apparatus and method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |