US 6,270,247 B1Granted

Mixing and kneading apparatus

AssigneeBuss Compounding Systems AG

InventorPatrick Tschopp

Life of this patent

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Abstract

A mixing and kneading device comprises a mixing and kneading shaft mounted in a housing and driven to a rotating as well as to a reciprocating movement. For sealing the housing, there is provided a sealing assembly located between the housing and the mixing and kneading shaft. The sealing assembly includes a supporting assembly arranged between the housing and the mixing and kneading shaft and provided with first and second sealing means. The supporting assembly is locked against rotation, but coupled to the mixing and kneading shaft to perform therewith its reciprocating movement. The first sealing means serves for rotatively seal the mixing and kneading shaft and is located between the mixing and kneading shaft and the supporting assembly. The second sealing means provides for a translative sealing of the mixing and kneading shaft and is located between the supporting assembly and the housing.

Claims18

Dependent claims

A mixing and kneading apparatus comprising:

a housing delimiting a work space;
a working member extending into said work space and being rotatable and reciprocable relative to said housing;
a sealing assembly located between said housing and said working member, said sealing assembly being rotationally fixed to said housing and being fixed to said working member for reciprocal movement with said working member;
first sealing means being supported by said sealing assembly and being interposed between said sealing assembly and said working member for providing rotary sealing of said working member in said housing;
and
second sealing means being interposed between said sealing assembly and said work space for providing reciprocal sealing of said working member in said housing, a first portion of said second sealing means being supported by said housing and a second portion of said second sealing means being supported by said sealing assembly, said first and second portions of said second sealing means extending radially between said housing and said sealing assembly.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/336,265Filed 18 Jun 1999
Priority: CH 1481/9810 Jul 1998
Granted: 7 Aug 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F16J 15/187
With stuffing-boxes for elastic or plastic packings: self-aligning stuffing-boxes
B29B 7/22
Non-continuous, with mechanical mixing or kneading devices, i.e. batch type: component parts, details or accessories; Auxiliary operations
B29B 7/488
With intermeshing devices, e.g. screws: parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
B29B 7/58
Continuous, with mechanical mixing or kneading devices: component parts, details or accessories; Auxiliary operations