GB595261A - Improvements in or relating to mixing machines - Google Patents

Improvements in or relating to mixing machines

Info

Publication number
GB595261A
GB595261A GB24512/44A GB2451244A GB595261A GB 595261 A GB595261 A GB 595261A GB 24512/44 A GB24512/44 A GB 24512/44A GB 2451244 A GB2451244 A GB 2451244A GB 595261 A GB595261 A GB 595261A
Authority
GB
United Kingdom
Prior art keywords
rotors
chamber
teeth
rotation
driven
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
GB24512/44A
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.)
SYDNEY LAURENCE GOODCHILD
Original Assignee
SYDNEY LAURENCE GOODCHILD
Filing date
Publication date
Application filed by SYDNEY LAURENCE GOODCHILD filed Critical SYDNEY LAURENCE GOODCHILD
Publication of GB595261A publication Critical patent/GB595261A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/60Pump mixers, i.e. mixing within a pump
    • B01F25/62Pump mixers, i.e. mixing within a pump of the gear type

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

<PICT:0595261/III/1> <PICT:0595261/III/2> <PICT:0595261/III/3> A machine for mixing and kneading plastic masses and for the emulsification of viscous or gel-like substances in aqueous media comprises a closed treating chamber and at least one mixing member therein adapted for rotation relatively thereto and having teeth co-operating with teeth on the inner surface of the chamber, or on a further mixing member, the shape and arrangement of the teeth being such that the bulk of the material under treatment cannot pass through the area in which the co-operating teeth are at a minimum distance apart, so that the material is diverted axially along the length of the chamber. The shape of the teeth is also such that each of the surfaces within the chamber to which the material under treatment will tend to adhere is cleaned during the treatment by wiping by another surface. The treating chamber may have a shape equivalent to two parallel intersecting cylinders within each of which are disposed two independent coaxially mounted toothed rotors which can be driven in opposite directions. The treating chamber 18, Fig. 6, comprises members 10, 11 secured by vertical bolts, and mounted therein are two pairs of oppositely driven intermeshing rotors a, b, and x, y, Fig. 1. The rotors are of epicycloidal or hypocycloidal cross section and have a length inversely proportional to their rate of rotation. Material is fed into the chamber through an opening 26 normally closed by a plug 26a, is carried downwards around the rotor b to be kneaded in the bite between the rotors a, b, and is circulated around and upwardly through the bite between the rotors x, y to be returned for recirculation to the rotors a, b. The rotors x, y are shorter than the rotors a, b and are driven at a proportionately higher speed. The relative rotation of the pairs of rotors may be reversed during the treatment by the adjustment of crossed and open belts on a fast pulley 32, Fig. 3, and two loose pulleys 33 on a driving shaft 31. The latter drives the rotors a, b and their associated shafts 19, 20 through spur wheels 34, 35 and pinions 36. Shafts 21, 22, carrying the rotors x, y, are driven through spur wheels 37, 38, and pinions 39. When the chamber 18 is to be emptied, the shaft 31 is pushed horizontally to disengage spur wheels 34, 35, while retaining engagement between spur wheels 37, 38. Gear wheels 40, 41 on a lay shaft 42 are then brought into engagement with driving pinions 39, 36, respectively, thus reversing the direction of rotation of the rotors a, b. The material is then discharged through an orifice 44, normally closed by a plug 45. Tubular channels in the members 10, 11 from passages for a cooling medium. In an alternative construction the treating chamber contains only one pair of intermeshing rotors which are less long than the chamber and are reciprocated axially. The rotor teeth are helical and preferably of epicycloidal and hypocycloidal form, and their direction of rotation can be reversed in synchronism with the reversal of the axial stroke. In a further alternative construction the treating chamber is rotatable and consists of a cylinder toothed on its inner periphery. An inner rotor with a small number of teeth engages the teeth of the chamber and is rotated and axially reciprocated. A crescent shaped abutment fills the space not covered by the path of the teeth.
GB24512/44A 1944-12-07 Improvements in or relating to mixing machines Expired GB595261A (en)

Publications (1)

Publication Number Publication Date
GB595261A true GB595261A (en) 1947-12-01

Family

ID=1738420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24512/44A Expired GB595261A (en) 1944-12-07 Improvements in or relating to mixing machines

Country Status (1)

Country Link
GB (1) GB595261A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160570A2 (en) * 1984-05-01 1985-11-06 E.I. Du Pont De Nemours And Company Counter-rotating multiple screw apparatus
GB2191713A (en) * 1986-06-21 1987-12-23 Bates W & A Ltd Mixer for polymeric materials
EP0672449A1 (en) * 1994-03-17 1995-09-20 Ceres Heilmittel AG Method and device for preparing a slurry, emulsioning or/and grinding

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160570A2 (en) * 1984-05-01 1985-11-06 E.I. Du Pont De Nemours And Company Counter-rotating multiple screw apparatus
EP0160570A3 (en) * 1984-05-01 1987-09-09 E.I. Du Pont De Nemours And Company Counter-rotating multiple screw apparatus
GB2191713A (en) * 1986-06-21 1987-12-23 Bates W & A Ltd Mixer for polymeric materials
GB2191713B (en) * 1986-06-21 1990-05-09 Bates W & A Ltd Mixers suitable for use with polymeric materials
EP0672449A1 (en) * 1994-03-17 1995-09-20 Ceres Heilmittel AG Method and device for preparing a slurry, emulsioning or/and grinding

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