In the chemical industry, dispersion engineering has always been an important part. Including coatings, paints, inks, dyes, printing, pesticides, etc. must be used in the dispersion engineering, and the main function of dispersion is to disperse solid particles in liquid media. Generally speaking, the so-called dispersion actually includes three stages:
(1) Wetting means that the gas adsorbed on the surface of the solid particles is replaced by a liquid.
(b) Grinding The condensed particles are broken up into original particles by mechanical force.
(c) Dispersion is the transfer of wetted raw material particles into a liquid vehicle to produce a permanent particle separation.
Traditional dispersing machines have been dominated by three-roller and ball mills. Since 1952, DuPont has slowed down the production of traditional ball mills. Since the invention of the vertical sand mills, the dispersing machinery has entered a new era. In 1966, in order to further improve the shortcomings of the vertical sander, such as color change is not easy, the bottom of the glass bead deposition is not easy to start, the beads are fragile, etc., and the Horizontal Sand Mill is researched and developed, except for the vertical sand mill. In addition to the advantages, the forced separation automatic cleaning device is adopted, the filling rate of the grinding beads is improved, and the advantages of no pollution, energy saving, no noise, easy color change, etc., can be applied to the viscosity of 80KU-120KU. The mainstream of dispersing machinery in the 1980s. Its representatives are German Peller, NETZSCH, Swiss Buhler, Waldorf,
Economic Benefits 1. High output and high dispersion efficiency The horizontal sand mill can be continuously produced. Because of the excellent dispersion effect, the output is large.
Second, economic security, no noise Fully sealed process saves solvent costs, you can get on investment, compact design does not take up space, late night operation, no noise annoying.
Third, the color change is easy, easy to load and unload cleaning The design of the horizontal Sand Mill has taken into account the possibility of color change and the minimum dead angle, so the cleaning is very easy, special leak valve, can leak the beads without having to disassemble the machine.
Fourth, the material is easy to understand, durable and with sophisticated design, the use of high-grade wear-resistant steel, excellent wear resistance, the original product transmission, special material pump, the failure rate is small without special maintenance.
5. Matching the material of the required parts can be appropriately selected in special occasions of water-based materials or no pollution. Special materials such as high-strength steel or special parts can be used to obtain higher quality. The upper feed is fully ground by the grinding bucket and then output from the top without creating a dead angle in the grinding bucket.
Second, the dynamic gap type separation device, using ultra-high hardness tungsten carbide alloy, the wear resistance is particularly good, the high-speed rotating moving piece makes the beads difficult to stay, and has an automatic cleaning effect to ensure the separation effect.
3. If it is necessary to change the color or the same kind of raw materials frequently, a solvent venting valve or a disassembly rail may be added to facilitate the discharge of the residual solution in the grinding tank or to update the grinding medium.
