Dry granulating machine used dry extrusion technology, the powder content <10% were compressed into tablets, after crushing, whole grain, screening process, the massive materials into line with granular material requirements.
All kinds of dry powder materials from the top into the dry granulating, degassing, screw preloading into two equal relative rotation between the roll, roll, two roll material is forced into the material, roll bite roll gap compression, material through the compression zone natural prolapse, surface tension and gravity of material. Prolapse after fingers clumps into granulator by rotating cutter row broken, broken material into the granulator by rolling cutter row into the rotary vibration sieve sieving granular and powdery materials. Qualified goods are sent to the warehouse through the conveyor. Powdered undersize conveyor is sent back to the raw material bin again by two rolling, extrusion pressure can be adjusted by hydraulic cylinder pressure according to the need of pelletizing operation.
Dry granulating machine works:
Raw materials from the feeding port to enter through screw conveyor bucket elevator, the elevator will be raw material powder into the vibration type material bin, through quantitative feeding machine sends the material to frequency conversion type screw feeder, the materials are pre compression, the compression of material is pressed into the two phase of the turn of the two pairs of rollers the middle of compaction, the pressure strength is through the cylinder thrust by the roller transfer to the material, are flaky materials compaction automatic groove into the crusher, the crushed into particles do not have the size of the body, and then into the granulator trimming. Modified particles through the sieve with meshes is squeezed out into the screen, through sieving finished particles into the bucket type lifting machine is fed into the finished product warehouse. Powder sieving down through the screw conveyor returns the raw material warehouse, re compacted then a closed cycle.
◆ dry granulator is mainly rely on external pressure, so that the material is forced through two opposite rotating roller gap, compressed into tablets. In rolling process, the actual density material can increase 1.5-3 times, so as to achieve the required strength.
◆ material by dry granulator pressure forced compression molding, can not add any wetting agent, to ensure purity.
◆ dry building materials, without the need for subsequent drying process, more conducive to the existing production process of convergence and transformation.
◆ dry granulator particle high intensity, bulk specific gravity is higher than other method of granulation are more significant. Especially suitable for increasing the mass density of product.
◆ dry granulating machine can control the pollution of the environment, reduce the wasted powder and packaging costs, improve product transport capacity.
◆ dry granulating machine has the advantages of compact structure, convenient repair, simple operation, short process flow, low energy consumption, high efficiency, low failure rate, the application range is wide, roller pressure can be adjusted freely according to different material.
◆ feeding and feeding device adopts frequency conversion stepless speed regulating control, high degree of automation, a person can achieve multi machine control, the labor intensity is low and can be long-term continuous operation etc..
The main driving parts are made of high quality alloy material, stainless steel, titanium, chromium and other surface alloy production, greatly improving the wear resistance, corrosion resistance, high temperature resistance and pressure ability, make the machine has a long service life.
◆ by changing the groove forms of the roller surface, can get the slice, flat ball materials.
Dry granulating machine applicable industry:
The petroleum chemical industry, fine chemical, pharmaceutical, food, metal powder
Biological engineering, pesticide, fertilizer, mineral, coal |
