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Recently, the author saw a netizen in a forum saying: "The company trial-produces a new variety of raw materials, the material after drying is as hard as the stone, the portable pulverizer is very poor, with a rocking machine and a versatile The pulverizers have all been tried, and still can't." So the netizen asked, is there any good crushing equipment recommended?
In response, the relevant person replied that "it is so hard, or first look for the reason from the previous crystallization process, so hard will not affect the solvent residue."
Others believe that the use of a fluidized bed is very effective in smashing harder materials by a jet mill. It is recommended to use a crusher to crush and then use a vertical screenless mill to pulverize.
Others said that in the case of small particle size requirements, hammer mills can be considered, which is cheaper than airflow; also, you can look through a sieve before drying, and it may not be so hard after drying.
So, what is the difference between the several crushing equipment mentioned above?
Portable crusher
The portable shredder is easy to carry. However, due to its small output, it is suitable for individuals, families or small shops.
Swing crusher
The rocking pulverizer has precise structure, small volume, light weight, high efficiency, no dust, clean and hygienic, simple operation, beautiful appearance, and is energy-saving and safe. It can quickly complete coarse powder and fine powder, so that the production of medicines can meet GMP requirements. It is suitable for the crushing of small batches of traditional Chinese medicine, precious medicine and other materials. But it is not convenient to carry.
Universal crusher
The universal crusher is suitable for the pharmaceutical and other industries. It can process hard and difficult materials, including crushing Chinese herbal medicines. It can also be used as an auxiliary equipment for the micro-grinder and superfine grinding machine. It has the advantages of low working noise, high efficiency, reliable performance and product quality, safe operation, low drug hygiene and low loss.
Fluidized bed collision type jet mill
The airflow pulverizer has a wide application range and high fineness of the finished product. Typical pulverizable materials such as superhard diamond, silicon carbide, metal powder, etc. Since the pulverizer can change the ordinary air of the gas source part into an inert gas such as nitrogen gas or carbon dioxide gas, the machine can be used as an inert gas protection device, and therefore is also suitable for pulverizing and classifying processing of flammable, explosive, and easily oxidizable materials. . However, the cost of the device is relatively high.
At present, the airflow pulverizers on the market are mainly divided into flat airflow mills, fluidized bed-jet jet mills, circulating ducted jet mills, jet-type jet mills, and target jet mills. The fluidized bed is widely used in spray jet mills.
Hammer mill
It is understood that the hammer mill is a necessary equipment for the pre-production of the pharmaceutical, food and other industries. It has wide versatility, can adjust the fineness of crushing, has the advantages of high production efficiency, low energy consumption, safe use and convenient maintenance, so it has been favored by all walks of life.
The hammer stone crusher mainly relies on the impact to break the material. The working principle is that the material enters the hammer mill and is crushed by the impact of the high-speed rotary hammer. The pulverized material obtains kinetic energy from the hammer of the hammer, and rushes from the high-speed to the baffle and the sieve bar in the frame. At the same time, the materials collide with each other and are broken several times.
Materials smaller than the gap of the screen strip will be discharged from the gap; individual larger materials will once again experience the impact of the hammer head on the screen strip, crushed by grinding and extrusion, and the material is hammered from the gap by the hammer. Extrusion to obtain a product of the desired particle size. Hammer mills on the market are cheaper.
In response, the relevant person replied that "it is so hard, or first look for the reason from the previous crystallization process, so hard will not affect the solvent residue."
Others believe that the use of a fluidized bed is very effective in smashing harder materials by a jet mill. It is recommended to use a crusher to crush and then use a vertical screenless mill to pulverize.
Others said that in the case of small particle size requirements, hammer mills can be considered, which is cheaper than airflow; also, you can look through a sieve before drying, and it may not be so hard after drying.
So, what is the difference between the several crushing equipment mentioned above?
Portable crusher
The portable shredder is easy to carry. However, due to its small output, it is suitable for individuals, families or small shops.
Swing crusher
The rocking pulverizer has precise structure, small volume, light weight, high efficiency, no dust, clean and hygienic, simple operation, beautiful appearance, and is energy-saving and safe. It can quickly complete coarse powder and fine powder, so that the production of medicines can meet GMP requirements. It is suitable for the crushing of small batches of traditional Chinese medicine, precious medicine and other materials. But it is not convenient to carry.
Universal crusher
The universal crusher is suitable for the pharmaceutical and other industries. It can process hard and difficult materials, including crushing Chinese herbal medicines. It can also be used as an auxiliary equipment for the micro-grinder and superfine grinding machine. It has the advantages of low working noise, high efficiency, reliable performance and product quality, safe operation, low drug hygiene and low loss.
Fluidized bed collision type jet mill
The airflow pulverizer has a wide application range and high fineness of the finished product. Typical pulverizable materials such as superhard diamond, silicon carbide, metal powder, etc. Since the pulverizer can change the ordinary air of the gas source part into an inert gas such as nitrogen gas or carbon dioxide gas, the machine can be used as an inert gas protection device, and therefore is also suitable for pulverizing and classifying processing of flammable, explosive, and easily oxidizable materials. . However, the cost of the device is relatively high.
At present, the airflow pulverizers on the market are mainly divided into flat airflow mills, fluidized bed-jet jet mills, circulating ducted jet mills, jet-type jet mills, and target jet mills. The fluidized bed is widely used in spray jet mills.
Hammer mill
It is understood that the hammer mill is a necessary equipment for the pre-production of the pharmaceutical, food and other industries. It has wide versatility, can adjust the fineness of crushing, has the advantages of high production efficiency, low energy consumption, safe use and convenient maintenance, so it has been favored by all walks of life.
The hammer stone crusher mainly relies on the impact to break the material. The working principle is that the material enters the hammer mill and is crushed by the impact of the high-speed rotary hammer. The pulverized material obtains kinetic energy from the hammer of the hammer, and rushes from the high-speed to the baffle and the sieve bar in the frame. At the same time, the materials collide with each other and are broken several times.
Materials smaller than the gap of the screen strip will be discharged from the gap; individual larger materials will once again experience the impact of the hammer head on the screen strip, crushed by grinding and extrusion, and the material is hammered from the gap by the hammer. Extrusion to obtain a product of the desired particle size. Hammer mills on the market are cheaper.
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