Air-cooled chiller for recycled plastic granulator
Plastic pelletizer cooling method usually uses water cooling, and according to the water temperature is different, divided into rapid cooling and slow cooling.
Rapid cooling: that is, cold water direct cooling, rapid cooling of plastic extrusion layer shaping favorable, but for crystalline polymers, due to sudden hot cooling, easy to residual internal stress in the organization of the extrusion layer, leading to cracking in the use of the process, the general PVC plastic layer using rapid cooling.
Slow cooling: In order to reduce the internal stress of the product, the cooling water tank in sections placed in different temperatures of water, so that the product is gradually cooled down and shaped, PE, PP extrusion on the use of slow cooling, that is, after the hot water, warm water, cold water, three sections of cooling. This process of plasticization of plastic has a buffer effect, renewable particles of the indicators in order to meet the standards.
Utility model cooling water temperature control device for extrusion pelletizer cooling water temperature control, making the production of pellets without holes; for different resins in the drawing process requires different water temperatures, you can adjust the temperature setting value, so that the cooling water to reach the required temperature, making the production of pellets without holes.
Introduction of air-cooled chiller
It is a machine that achieves its cooling effect through a vapor compression or absorption cycle. These liquids are able to flow through a heat exchanger to reach the purpose of cooling the air or equipment, vapor compression chillers include four main components of the vapor compression refrigeration cycle (compressor, evaporator, condenser, part of the form of metering device), these machines can be realized in different refrigerants, absorption chillers use the refrigerant and the city with water benign silica gel as a desiccant. Absorption chillers utilize water as a refrigerant and rely on a strong affinity between water and lithium bromide solution to achieve the cooling effect.
The operation is through three interrelated systems: refrigerant circulation system, water circulation system, electrical automatic control system ! Compressor: The compressor is the core component of the whole refrigeration system, and the power source of refrigerant compression. Its role is to input electrical energy for mechanical energy, the refrigerant compression.
Refrigerant circulation system:
1, the evaporator in the liquid refrigerant absorbs the heat in the water and begins to evaporate, the end of the refrigerant and the water to form a certain temperature difference between the liquid refrigerant also * evaporated into a gaseous state by the compressor suction and compression (pressure and temperature increase), the gaseous refrigerant through the condenser (air-cooled / water-cooled) to absorb the heat, condense into a liquid, through the thermal expansion valve (or capillary tube) throttled into a low-temperature refrigerant into the evaporator, completing the refrigerant cycle. After throttling through the thermal expansion valve (or capillary tube), it becomes low temperature refrigerant and enters into the evaporator to complete the refrigerant cycle.
2. The compressor adopts French Bafuma or Japanese Sanyo scroll compressor, which is stable and efficient for the long-term reliable operation of the equipment. Closed compressor, compared with the open compressor with high sealing performance, in the process of long-term operation, * freezer oil and refrigerant leakage.
3, the condenser adopts high-efficiency fin type design, the evaporator adopts high-efficiency internal threaded copper tube water tank coil type design, can effectively improve the heat effect, cleaning is also convenient.
4, the water pump selected southern stainless steel high-flow high-head pump, the use of safe and ultra-static, power saving and durable. Body shell with electrostatic powder coating paint, beautiful and generous. Fitted with a stainless steel tank, easy to clean. The water tank contains float automatic replenishment device, which can be used to measure and control the water level, thus effectively saving time for customers and improve work efficiency.
5, the unit refrigeration components and electronic control components are selected, such as the United States ALCO, Italy ARRON, SIEMENS, France SCHNEIDER and other famous companies with the products, so that the operation of the whole machine is safer, more reliable performance, lower operating failure rate.
6, the unit has a compact structure, beautiful appearance, small size, light weight, low vibration, simple installation and operation, no need to install cooling water tower and cooling water pump, the bottom is equipped with movable casters, you can change the installation at will, the operation of a series of advantages such as low noise!
If you are interested in our plastic granulator – please contact me and leave a message. Thank you.
