Blueberry walnut sesame low temperature liquid nitrogen pulverizer - jujube peanut low temperature liquid nitrogen pulverizer

Blueberry walnut sesame low temperature liquid nitrogen pulverizer - jujube peanut low temperature liquid nitrogen pulverizer - minus 196 degrees low temperature liquid nitrogen pulverizer

1. Description of liquid nitrogen cryogenic mill

The pulverizer adopts the external media freezing method, and is a smashing technology for solving the problem that the material which cannot be pulverized at normal temperature is frozen by the foreign matter. The heat is exchanged by the cold source of liquid nitrogen, compressed air, air conditioner, and the like.

Principle of pulverization: heat exchange is carried out by using cold source and material; the material is cooled to an embrittled state; the embrittled material is subjected to numerous crushing, shearing and rubbing in the pulverizing chamber through the pulverizing mechanism to become fine particles. Shape, the fineness of the pulverized material can reach the micron level (60~2000 mesh). The coldness can be selected according to the performance of the material. If the liquid nitrogen is used as the refrigerant, the low cooling temperature can reach 196 degrees below zero, and the cooling rate is very fast. For some materials that need rapid cooling and low embrittlement temperature. It is the preferred coolant. For materials with low cooling embrittlement temperature, the compressed air or the pre-cooled air of the air conditioner can be used to exchange heat with the materials.

2. Liquid nitrogen low temperature pulverizer structure

1. The pulverizer uses a pre-cooling silo to pre-cool the material, and the pre-cooling silo is equipped with a precision liquid gas gasification device to forcibly cool the material during the liquid gas gasification process.

2. The material that has reached the cooling and embrittlement is sent to the crusher chamber by a screw feeder.

3. The independent rolling pair ensures that the machine operates normally in a low temperature environment. The refrigerant refilling compensation compensates for the heat generated by the material during the pulverization process. The injection amount of the refrigerant is regulated by the low temperature valve, and the high pressure airflow generated when the material is pulverized is The flow of the refrigerant lost pressure expansion is discharged into the machine cavity through the swirling window of the static classifier of the pulverizer. After the material is pulverized, the required fineness is achieved and the airflow enters the discharge system, and the coarse material hits the stationary classifier blade and bounces back to the pulverizer cavity to achieve the coarse step grading effect.

4. The material is sent to the external classifier through the induced draft fan to adjust the speed of the classifier impeller, which can achieve the fineness we need. The use of the external classifier reduces the time for the material to return to temperature during the screening, reduces labor, shortens the production cycle, and reduces the use of the site. The crushed material can be directly packaged and transported.

5. After classification, the coarse material is fed into the feeding mechanism through the pipeline and then re-pulverized into the pulverizer. The fine material enters the cyclone separator. The cyclone separator separates the material from the air, and the material is deposited by rotation on the bottom of the cyclone separator.

6. The inclined angle discharge system is used for discharging, and the inclined spiral discharging system ensures that the air of the cyclone does not flow out from the discharge port.

7. The gas mixture containing the rare material particles flowing out from above the cyclone re-enters the second cyclone separation. The final separation of the air flow with a certain cold source is sent to the crusher main machine through the pipeline. Air port.

Â Three. Liquid nitrogen low temperature pulverizer advantages:

The machine adopts a high-performance liquid gas gasification device to exchange heat between the refrigerant and the material during the gasification process, and collects the remaining cold air by means of a reflux method. Each part uses a pipeline valve to adjust the air compensation of the reflow air to the crusher chamber. The pre-cooling, closed conveying, closed grading, discharge recirculation, refrigerant usage rate, power source mechanism, and smashing transportation process have achieved good results. In terms of energy consumption has reached the international leading level!

4. Liquid nitrogen low temperature pulverizer special:

For materials that require rapid cooling and rapid temperature rise, we use vacuum pre-cooling and vacuum heating method to rapidly cool the material by uniformly sprinkling the material into the vacuum pipe and introducing the refrigerant into the vacuum pipe. When the temperature rises, the high-altitude pipe is used to fall into the pipe and dry. The method of hot air is rapidly heated, and this method has a unique effect on ultrafine pulverization of nutraceutical articles. The user can increase the selection of the *** final room temperature classification method to classify the coarse materials that are mixed in the fine powder.

5. Liquid nitrogen cryogenic pulverizer application areas:

1. Chemical and coating fields: metal wall coating: Teflon, PC, PU, â€‹â€‹PP, PE coating powder; plastic coating: cement coating, high bonding coating; silent coating: elastomer, nano Sound absorbing coating; anti-corrosion coating; ultra-fine pulverization of raw materials used in absorbing coatings. It has reached the international advanced level in the primary color pulverization process (natural masterbatch pulverization).

2, food, health products: plant fruits, animal and plant extracts, chili powder, pepper, black pepper powder, white pepper powder, green pepper powder, cinnamon powder, cumin powder, grass powder, Dahongpao pepper powder, Cinnamon powder, red glutinous rice powder, red yeast rice powder, soybean meal powder, red pepper powder, garlic powder, star anise powder, clove powder, amomum powder, fragrant leaf powder, soybean meal powder, grass fruit powder, turmeric powder, ginger powder, Allspice, fresh ginger powder, curry powder, sand ginger powder, shallot powder, onion powder, mustard powder, meat powder, white glutinous rice powder, mountain glutinous rice powder, green onion powder, cumin powder, spice powder, allspice powder, large powder The pulverization of Chinese patent medicines, natural and synthetic elements can ensure that the original elements are not lost during the pulverization and drying process.

3, recycling areas: low melting point plastics, high self-lubricating materials, waste rubber, raw collagen glue low temperature pulverization.

This series of machinery belongs to the micro-powder technology, which is used in polymer materials such as polypropylene, polyethylene, polycarbonate, polyamide, polytetrafluoroethylene, ABS, elastomer, raw rubber, cooked rubber, phenolic, polyester. Wait until it is crushed to 100~600 mesh. For high water content, such as: animal and plant extracts, proprietary Chinese medicines, synthetic fibers, seaweed extracts, etc.; special materials for strong fibrous materials, animal placenta, honeycombs, body fluids. The waste polytetrafluoroethylene is pulverized to about 300 mesh, and its performance is no different from that of the new PTFE powder. It is widely used in polyester powder coatings, and the use of sheep placenta oral capsules is a major breakthrough.

Crushing consumption: The pulverization of the polyester powder has achieved the desired effect on liquid nitrogen consumption. The liquid nitrogen consumption during pulverization is 300~10000L/ton (depending on the properties of the crushed materials), the electric energy consumption is 50~400 kWh/ton, and the mechanical wearing parts are 10~30 yuan/ton. Due to differences in material properties and comminution requirements, energy consumption is different during the comminution process.

Mechanical automation: The machine uses a microcomputer to control the mainframe supply and nitrogen supply. The microcomputer control system automation level can be set according to the customer's needs. The user only needs to set a parameter point of the discharge fineness value. Based on this parameter point, the intelligent control system passes the host current, the chamber pressure, the pipeline flow, The material temperature automatically adjusts the power frequency of each point, the size of the refrigerant valve, the air compensation valve, the discharge speed, and the heating system to achieve intelligent control.

Outlook: The pulverizing system overcomes the problem that special materials cannot be pulverized at normal temperature. The cooling lag, the discharge air compensation, and the internal grading of the system reduce the shortcomings of the traditional freezing pulverizer, and are advanced pulverizers at home and abroad. It fills the gaps in such technologies at home and abroad and is an indispensable tool for the crushing process of materials.

Configuration: full set of 304 stainless steel.

1. *** Low: The whole machine has no frequency conversion, no classifier, no backflow pump, and two sets of main engine with wheel speed regulation.

2, a full set of motor frequency conversion, no classifier, no return pump.

3, a full set of motor frequency conversion, no classifier, with a return pump.

4, a full set of motor frequency conversion, classifier, no return pump. (The classifier adopts dragon spray type)

5, a full set of motor frequency conversion, a classifier, a return pump. (full mechanical function)

6, a full set of motor frequency conversion, plc program control, program memory function. (Full mechanical function) The automation level is determined separately.

The main technical parameters of liquid nitrogen low temperature pulverizer

model	Motor Power	Rotating speed	Crushing fineness	Yield	Fan power
DF-200	11kw	8500r/min	30-1500 mesh	5-100kg/h	3kw
DF-300	30kw	5500r/min	30-1500 mesh	20-500kg/h	4kw
DF-450	45-75kw	3800r/min	30-1500 mesh	30-2000kg/h	7.5kw

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