Early in the last century eighty's, ninety's, dry granulation technology has done a lot of research work, to be used in dry granulation technology of ceramic production enterprise wide, many technical problems need to solve.
Dry granulating machine is the second generation of granulation method "one step granulating" developed a new method for granulating, pelleting process is a environmental protection type, directly to the new equipment powder pressed into a pellet. Dry granulator granulation, widely used in pharmaceutical, food and chemical industries, especially for the granulation in wet heat easily decomposed failure or caking material. Dry granulating machine made of particles can be directly tabletting or filling capsules.
It is understood, dry granulating machine using the latest rolling control technology, control equipment of dry granulator can adjust different materials and the volatility of any physical properties of the same material between different group, the process parameters of dry granulation can be accurate, repeated adjustment, so as to efficiently produce high quality particles. Dry granulation technology by roller press granulating machine. With traditional Chinese medicine the relative density of extract, the spray drying to obtain dry extract powder, add some accessories, to squeeze dry granulating machine pressed into thin slices, and then crushed into particles. The method needs less materials, is helpful to improve the stability of the particles, disintegration and soluble powder. ?
Future, dry granulating machine will meet the clean and flexible functional requirements. First of all, as the dry granulating system is completely closed, can reduce the dust pollution in the production process, thereby reducing the risk of pollution and pollution; secondly, the equipment adopts a modular design, the granulating device can only use a small amount of tools can be disassembled, convenient for cleaning of all the modules, and can be easily replaced screw and a pressure roller which adapt to different tasks.
The stem has two kinds of vertical and horizontal granulator structure
Horizontal dry granulation unit
The powdery material by vibration hopper through quantitative feeder transverse delivered to the main feeder, stirring spiral in the main feeder makes the degassing and arc groove preloading to about two settings of roll, two roll back in a couple of intermeshing gear under uniform motion, powder in the roll moment is rolling a piece of dense, sheet by roll detachment in elastic recovery under the action of the roll down, sheet were a few off by scraper, a strip-shaped groove two roller surface axis uniformly distributed to prevent slipping powder in the roll bite. Sheet into broken granulator whole grain into the vibration sieve sieving classification can meet the product requirements, particles, powder screening shaft vibration hopper returned recycling granulation.
Vertical dry granulation unit
Vertical granulating process in addition to different feeding mode and roller installation mode and horizontal dry granulation unit, its working principle is the same. In the vertical dry granulation unit, powder into the vibration hopper mixer is mixing degassing, the spiral quantitative feeder to the two roller is arranged on the arc-shaped groove and are pre pressure, after the process and horizontal dry granulation unit of the same.
The characteristics of dry granulator:
★ dry granulation, without any binder, without the need of two drying.
★ particle intensity can be adjusted by adjusting roller, pressure, control the intensity of particles.
★ products for the sand like irregular particles.
★ continuous production, high production capacity, high degree of automation, is suitable for industrialized production.
★ granulation low cost.
The scope of application of dry granulator:
In addition to extrusion friction can cause dangerous explosion, dry granulator for most dry powder materials can be directly. The rotary joint for water cooling on the roll, this machine can also be suited for granulation of heat sensitive materials. |
