GB1351751A - Screw conveyors - Google Patents

Screw conveyors

Info

Publication number
GB1351751A
GB1351751A GB2095070A GB1351751DA GB1351751A GB 1351751 A GB1351751 A GB 1351751A GB 2095070 A GB2095070 A GB 2095070A GB 1351751D A GB1351751D A GB 1351751DA GB 1351751 A GB1351751 A GB 1351751A
Authority
GB
United Kingdom
Prior art keywords
screw
helix
groove
april
housing
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
Application number
GB2095070A
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.)
BXL Plastics Ltd
Original Assignee
Bakelite Xylonite 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 Bakelite Xylonite Ltd filed Critical Bakelite Xylonite Ltd
Publication of GB1351751A publication Critical patent/GB1351751A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C48/505—Screws
    • B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
    • B29C48/60—Thread tops
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screw Conveyors (AREA)

Abstract

1351751 Extrusion screw BAKELITE XYLONITE Ltd 19 April 1971 [30 April 1970] 20950/70 Heading B5A [Also in Division B8] Leakage of, e.g. thermoplastic, material between the lands of one or more screw impellers and a stationary, e.g. cylindrical, housing from which a rod or tube may be extruded, is minimized by a helical thread 3 which is located for radial displacement within a helical groove 5 of a screw conveyer, and is resiliently biased into contact with the housing. The groove may be located around the cylindrical surface of the screw or, as shown, within a screw thread integral with the remainder of the screw, and may be of spring steel, or may be outwardly urged by a spring 4 if of material of lesser resiliency, such as polytetrafluoroethylene, resin/glass laminate, or leather. The screw may comprise steel, or alloy, wood, plastics, or glass, and the screw and helix may each comprise a different material, or the same material if resilient. The helix is secured to the screw at its trailing end, preferably by brazing; a helix may be located in a groove in each land of a twostart screw; two or more helices may be located alongside in a single groove; the helix may be located only at the downstream end of the screw; and may comprise a number of shorter helices arranged in abutting relationship.
GB2095070A 1970-04-30 1970-04-30 Screw conveyors Expired GB1351751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2095070 1970-04-30

Publications (1)

Publication Number Publication Date
GB1351751A true GB1351751A (en) 1974-05-01

Family

ID=10154573

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2095070A Expired GB1351751A (en) 1970-04-30 1970-04-30 Screw conveyors

Country Status (2)

Country Link
CA (1) CA968514A (en)
GB (1) GB1351751A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078515A1 (en) * 1981-10-29 1983-05-11 Union Carbide Corporation Method for extrusion of linear polyolefin materials
US4482045A (en) * 1981-11-24 1984-11-13 Phillips Petroleum Company Valve and material supply system
US5687832A (en) * 1996-02-15 1997-11-18 Thiessen; Terry Flexible bladed auger
EP1757885A2 (en) * 2001-10-25 2007-02-28 Kabushiki Kaisha Kobe Seiko Sho Screw for discharging reduced iron
CN102730378A (en) * 2012-07-05 2012-10-17 江苏仅一包装技术有限公司 Hollow transporting threaded rod and manufacturing process thereof
CN103013152A (en) * 2012-11-30 2013-04-03 宜兴市华龙塑木新材料有限公司 Steel wire plastic-wood

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109368156A (en) * 2018-11-27 2019-02-22 江苏凯宫隧道机械有限公司 The compensable screw conveyor of blade wearing layer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078515A1 (en) * 1981-10-29 1983-05-11 Union Carbide Corporation Method for extrusion of linear polyolefin materials
US4482045A (en) * 1981-11-24 1984-11-13 Phillips Petroleum Company Valve and material supply system
US5687832A (en) * 1996-02-15 1997-11-18 Thiessen; Terry Flexible bladed auger
EP1757885A2 (en) * 2001-10-25 2007-02-28 Kabushiki Kaisha Kobe Seiko Sho Screw for discharging reduced iron
EP1757885A3 (en) * 2001-10-25 2007-03-14 Kabushiki Kaisha Kobe Seiko Sho Screw for discharging reduced iron
CN102730378A (en) * 2012-07-05 2012-10-17 江苏仅一包装技术有限公司 Hollow transporting threaded rod and manufacturing process thereof
CN103013152A (en) * 2012-11-30 2013-04-03 宜兴市华龙塑木新材料有限公司 Steel wire plastic-wood
CN103013152B (en) * 2012-11-30 2015-06-17 宜兴市华龙塑木新材料有限公司 Steel wire plastic-wood

Also Published As

Publication number Publication date
CA968514A (en) 1975-06-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees