An ultrasonic ball mill

Abstract

The invention provides an ultrasonic ball mill pulverizer which comprises a frame, a mixing tank, a transmission motor driving a stirring shaft to rotate, the stirring shaft pushing mill balls to crush and grind a material, a material circulation system, as well as a cooling water jacket layer, a water inlet, a water outlet, a material inlet, a material outlet and a ball discharge port which are arranged on the mixing tank. The ultrasonic ball mill pulverizer is characterized in that: holes for inserting ultrasonic generators and an assembly bosses are formed on the upper cover or / and wall of the mixing tank; 1 to 12 sets of ultrasonic generators are vertically or / and obliquely inserted into the assembly bosses which are connected or welded on the cover or the wall of the mixing tank through threads or flanges; and probes of the ultrasonic generators are inserted deep into the mixing tank and contacted with the material, so that the material completely absorb strong ultrasonic energy. While performing stirring and ball milling to the material, the ultrasonic ball mill pulverizer applies strong ultrasonic field action to generate a high-density energy filed, so that micron-grade or sub-micron-grade (0.7-30mu m) powder can be crushed into nano-grade (20-600nm) powder. The ultrasonic ball mill pulverizer has the advantages of high yield and efficiency, simple process, is easy to operate and control and can eliminate local concentration unevenness, effectively prevent particle agglomeration, and is suitable for industrial production.

Description

Technical field [0001] The invention relates to the field of powder preparation and processing machinery, in particular to an ultrasonic ball mill crusher. Background technique [0002] The preparation of nanomaterials is the most important basic technology in nanotechnology research. At present, most of the preparation of nanomaterials uses gas phase and liquid phase methods. These methods have disadvantages such as complex processes, fine operations, high costs, or difficulty in preparing precursors. , Only a small amount of samples can be prepared in the laboratory, and it is difficult to realize industrial production. In recent years, with the increasing development and maturity of ultrasonic technology, it has been widely used in the fields of synthesis of new materials, chemical reactions, and enhancement of transfer processes. Ultrasound is not only a form of wave, but also a form of energy. It interacts with the medium in the propagation process to produce cavitation and...

AI Technical Summary

Problems solved by technology

Although it can partially pulverize micron-sized MgO and metal copper powders to nano-sized, this structure has a large loss of ultrasonic energy and low transmission efficiency; The outside, similar to the structure of the ultrasonic cleaning cup, acts on the material through the barrel wall. The ultrasonic energy attenuates quickly, and most of the energy is absorbed by the barrel wall, which cannot form a high-density energy field in the material medium.

Especially for solid lubricating materials such as tungsten disulfide, molybdenum disulfide and graphite with a lamellar structure, the nano-refinement effect cannot be achieved.

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