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Stirrer mill

A stirring mill and agitator technology, applied in grain processing, etc., can solve problems such as scraper heating

Pending Publication Date: 2020-10-20
BUEHLER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this may be undesirable when dispersing heat-sensitive substances, especially explosives or other hazardous substances, as the scraper may induce heating in the ground material

Method used

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  • Stirrer mill

Examples

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Embodiment Construction

[0015] figure 1 The stirred mill shown generally has a grinding vessel 2 with a built-in grinding chamber 8 . The grinding chamber 8 is at least partially filled with grinding media 43 (not shown) of diameter c. The stirred mill also has an inner stator 22 and a rotor 35 rotatable about the central longitudinal axis 19 and having a diameter d351. In this case, an abrasive stock discharge channel 47 is formed between the outer wall 23 of the stator 22 and the rotor 35 . A tool 38 is mounted on the rotor 35 and protrudes into the grinding chamber 8 . Furthermore, the second tool 74 is arranged on the container wall 9 offset from the tool mounted on the rotor 35 . Above the stator 22 is located a protective screen 30 as separating device, which protective screen is designed rotationally symmetrically with respect to the central longitudinal axis 19 . The protective screen 30 prevents the grinding medium 43 from flowing into the downstream discharge line 31 inside the inner st...

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Abstract

The invention provides a stirrer mill for treating flowable grinding stock. The stirrer mill has a mill container (2), a milling chamber (8), which is delimited by a container wall (9), and a stirringmechanism which can be rotated about a central longitudinal axis (19) and which comprises a rotor (35) with an internal diameter d351. Tools (38) are attached to the rotor, said tools extending in the direction of the container wall. The stirrer mill additionally has an inner stator (22) which is arranged within the rotor. A grinding stock discharge channel (47) is formed between the rotor and anouter wall (23) of the inner stator, and a grinding stock is guided through the discharge channel to a separating device (30) and then to a discharge line. The milling chamber is at least partly filled with grinding bodies with a diameter c. A separating device with a diameter d30 is arranged above the inner stator. For the distance s between the rotor and the grinding body separating device, s =0.5 * (d351-d30) <= 5 * c applies.

Description

technical field [0001] The invention relates to a stirred mill according to the preamble of claim 1 . Background technique [0002] The present invention refers to the European patent document EP1992412A1. Such agitator mills are known from this document. Agitated mills are used to disperse solids in suspensions, that is, liquids. It is used, for example, in the manufacture of adhesives, printing inks, cosmetics and pharmaceuticals. For this purpose, the grinding material is fed into the grinding chamber of the stirred mill formed between the outer wall of the rotor and the wall of the container through the feed channel, and together with auxiliary grinding media such as ceramic balls, which are also referred to below as grinding media, by means of placement on the rotor and / or Or the tool on the container wall is smashed. The agglomerates are dispersed and the crystal structure is broken up by stirring motion. Here, the primary particle size can be reduced from 100-500...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C17/16
CPCB02C17/161B02C17/16B02C17/163B02C17/166B02C17/184B02C2017/165
Inventor E·纳特A·里切尔N·克恩A·斯特姆
Owner BUEHLER AG
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