The principle and difference between basket mill and horizontal bead mill are introduced in detail as follows (mainly for small batch and multi-variety grinding conditions) :
1. Basket mill
The basket structure of the basket mill is similar to that of the stirring mill. It stirs zirconia beads (grinding body) grinding materials by rotating the stirring rod at a high speed. During the grinding process, the materials and media to be milled are put into the static grinding cylinder with jacket. Through the high-speed action of the stirring arm and the dispersion blade, enough kinetic energy is given to the grinding medium, and the shear force and impact force are applied to the material with the aid of the high-speed moving medium, so that the material is fully dispersed and refined. The high speed rotation of the dispersing disc at the bottom of the grinding basket produces negative pressure and strong suction force between the bottom of the grinding basket and the dispersing disc, so as to suck out the refined materials: with its strong centrifugal force, the high speed rotating dispersing disc will be sucked out of the material from the grinding basket, accelerating the dispersion of the materials. The circulation process of the material is as follows: high-speed suction of the self-suction impeller → extremely fine grinding in the grinding basket → high-speed rotation of the dispersing disc → discharge and dispersing. In addition, basket grinding machine has high efficiency circulation, so that the material easy to turn, to avoid the circulation of dead Angle. Therefore, the basket grinding machine is able to complete the material premixing, dispersing, grinding at the same time.
2. Horizontal bead mill
Horizontal sand mill is a horizontal wet continuous production of ultra-fine particle dispersing machine. The operation method is to put the materials to be milled together with the grinding medium into a static grinding cylinder with a jacket. Through the high-speed action of the stirring arm and the dispersing blade, enough kinetic energy is given to the grinding medium, and shear force and impact force are applied to the material with the aid of the high-speed moving medium, so as to obtain the dispersing and grinding effect.
3, the characteristics of the horizontal bead mill
(1) Mixing, stirring, dispersing and emulsifying at the same time;
(2). High grinding fineness;
(3). Inconvenient disassembly, cleaning difficulties;
(4) the need for extremely complex pipes and pumps and other backflow equipment.
4. Comparison between horizontal bead mill and basket mill
|Baket mill||Horizontal mill|
|Process flowchart||one machine can achieve ultra fine milling||need first dispersing for premixing|
particle size even, high
fineness (can reach 0.5µm)
particle size not even,
|Cost review||Equipment||One machine|
need flowback device
reach<10µm, only need one to 1.5 hours (milling time depends on material
need many times of circulation milling, take much
|Operate staff||one staff can at same time operate several machines||manually charge material, high labor intensity|
|Material consumed||less residue, and small material consumed|
more residue, relative
more material consumed
|Energy consumed||low||relative high|
Easy cleaning, easy
to clean, difficult maintenance, change produdct not easy, normally one
machine for one product
|Application range||viscosity narrow range||viscosity wide range|
5. Detailed comparison of cleaning
Horizontal bead mill requires extremely complex pipe and pump and other backflow equipment, relatively speaking, its pipe residual material more. When cleaning, the internal of each valve, pump body can not be disassembled, easy to form a cleaning dead corner, especially the production of oily materials, cleaning is very difficult, such as paint, ink and other products. Therefore, the color change difficulty also becomes the disadvantage of horizontal bead mill. Therefore paint manufacturers are likely to use single horizontal bead mill only to produce a color paint.
Basket mill does not have complicated pipelines, valves, pumps and other devices, only a basket mill, and the bottom of the chamber is a hole screen. At the end of the production, all the materials in the basket cavity will be sucked out under the suction of the dispersing disc. Even if there are materials in the basket, they will flow out through the mesh plate. The biggest characteristic is disassemble convenient, aperture net board is connected in basket body through 6 hexagon inside bolt, unscrew these 6 bolt can disassemble net board, then every parts inside the grinding basket can be seen.