simple description:The plastic hopper dryer is a double-cone rotary tank. When the tank is in a vacuum state, steam or hot water is passed into the jacket for heating. The heat passes through the tank inner wall to contact with the wet material. The wet material absorbs heat and evaporates. , It is pumped away through the vacuum exhaust pipe by the vacuum pump. Since the tank body is in a vacuum state, and the rotation of the tank body continuously turns the material up and down, the drying speed of the material is accelerated, the drying efficiency is improved, and the goal of uniform drying is achieved.
The plastic hopper dryer is a double-cone rotary tank. When the tank is in a vacuum state, steam or hot water is passed into the jacket for heating. The heat passes through the tank inner wall to contact with the wet material. The wet material absorbs heat and evaporates. , It is pumped away through the vacuum exhaust pipe by the vacuum pump. Since the tank body is in a vacuum state, and the rotation of the tank body continuously turns the material up and down, the drying speed of the material is accelerated, the drying efficiency is improved, and the goal of uniform drying is achieved.
Hopper dryer Equipment principle
The plastic hopper dryer is a double-cone rotary tank. When the tank is in a vacuum state, steam or hot water is passed into the jacket for heating. The heat passes through the tank inner wall to contact with the wet material. The wet material absorbs heat and evaporates. , It is pumped away through the vacuum exhaust pipe by the vacuum pump. Since the tank body is in a vacuum state, and the rotation of the tank body continuously turns the material up and down, the drying speed of the material is accelerated, the drying efficiency is improved, and the goal of uniform drying is achieved. can dry to a moisture content below 0.02%, and solves the shortcomings of poor transparency, sprue sticking, bubbles, silver bars, cracks, poor dimensional stability, internal stress, and insufficient product physical strength.
Dehumidification and drying feeding equipment series are composed of: non-heat dehumidification dryer, heat preservation type drying barrel and all stainless steel suction machine. The suction machine can transport the raw materials from the drying barrel to the forming machine, and can also transport the raw materials from the storage barrel to the drying barrel. According to customer needs, a kind of raw material can be delivered to two molding machines, vacuum motors and safety filter dust collectors are installed inside the machine. According to the production needs of different products, we can provide a powder-removing suction machine to separate the powder in the raw material and capture it. This device has a compact structure and is suitable for the production of precision injection products using engineering plastics such as connectors, precision gears, mobile phone communications, digital cameras and product size requirements, so that the moisture content of the raw materials after wet and dry is low and stable, which can meet strict requirements Technical and quality requirements.
Most engineering plastics are hygroscopic. When the plastic is taken out from the moisture-proof sealed packaging bag and exposed to the atmosphere, it will begin to absorb moisture from the atmosphere.
If it is a conventional hot-air barrel dryer, it is Humid external air can dry the plastic, so it cannot prevent the plastic from continuing to absorb moisture.
1. The internal circulation of the dehumidifier: through the operation of the compressor → discharge high-temperature and high-pressure gas through the exhaust port → enter the condenser for cooling → become a low-temperature and high-pressure gas → pass through the capillary tube → become a low-temperature and low-pressure liquid → evaporate and suck through the evaporator Heat → until the compressor becomes a low-temperature and low-pressure gas. So it goes back and forth.
2. The external circulation of the dehumidifier: under normal startup → through the operation of the fan → moist air is sucked in from the air inlet → passes through the evaporator → the evaporator absorbs the moisture in the air on the aluminum sheet → becomes dry air → Pass through the condenser to dissipate heat → blow out from the air outlet.
Hopper dryer application
The process operation method of the plastic hopper dryer is as follows: 1. High-efficiency conventional vacuum drying equipment uses steam for heating, which needs to be heated from inside to outside. The slow heating speed requires a large amount of coal. The plastic hopper dryer uses electromagnetic wave heating without a heat transfer medium. Inside the object, the heating speed is fast. The 1 kW can add water at room temperature to the vacuum dryer within 3-5 minutes. The key is to integrate and upgrade the technical management to heat up to 100°C, avoiding the above shortcomings, so it is fast, efficient, The drying cycle is greatly shortened and energy consumption is reduced. . 2. The product quality is good. Compared with conventional methods, the quality of processed products has been greatly improved. 3. It has the effect of disinfection and sterilization, the product is safe and sanitary, and has a long shelf life. 4. The economic benefits are significant. 5. Uniform heating. Because of the heating, the material is heated from the inside to the outside at the same time. The temperature difference between the inside and outside of the material is very small, and the inconsistent heating between the inside and the outside will not occur in the conventional heating, which will produce the effect of puffing, which is good for crushing and drying The quality is greatly improved. 6. Easy to control, convenient for continuous production and automation. 7. The equipment is small in size and easy to install and maintain. With the widespread use of engineering plastics, Dehumidifying dryers have gradually replaced traditional hot air dryers.
This is a device used to dehumidifying plastic resin to achieve drying. For example,
POM,ABS,TPE,PAL,ABS,CAB,EVA(2),EVOH,LM(4),LCP,PA11,PA6.46.6,PAI,PAR,PBT,
PC,PC/ABS,PC/PBT,PE.HDEPE,LDPE black3%,PE.HDEPE.LDPE black40%,PEEK,PE(1),
PEN,PES,PET,PETG,PI,PMMA,POM,PP,PPO,PPS,PS,[GPPS.EPS.HIPS],PSU,PIT,PUR,
PVC,SAN,SB,TPE,TPE,TPO,TPU,
Dehumidifier dryerand other plastic resins must be dehumidified and dried during the production process to improve the quality of the finished product.
Hopper dryer series are mainly designed for high-efficiency dehumidification of engineering plastics with strong hygroscopicity. Using the honeycomb runner with ceramic fiber as the base material, which represents the highest technological achievements of today, as the core component, the dry air provided can easily reach -40℃ dew point, and ideally it can reach -50℃ or even lower dew point , And the dew point temperature is stable, ensuring the high quality and stability of the molded plastic products. The whole series adopts P.LD. temperature control system as standard equipment; also provides PLC control with LCD touch-sensitive human-machine interface and can monitor the dehumidification effect of the machine Dew point meter is optional, the maximum drying air volume of this product can reach 3000m3/hr. The plastic before molding must be dried to an orientation ratio of less than 0.02%, which is completely bad, sprue adhesion, burrs, bubbles, silver bars, flow marks, cracks, dimensional stability and internal stress. Product defects (for example, insufficient physical properties and strength) are caused by sufficient dehumidification of the plastic before molding. Especially for PET, PBT, PA, PC and other high water absorption plastics, drying equipment with an ultra-low dew point of -40°C is required.
Hopper dryer can be dried to a volume ratio of less than 0.02%, which solves the shortcomings of short circuit, gate adhesion, bubbles, silver bars, cracks, poor dimensional stability, internal stress and insufficient physical strength of the product. There are a lot more.
Mainly used in plastic products, automobiles, optical discs, experiments, communications, optics, etc.; the rotary honeycomb can reach a low dew point of zero bai for dehumidification and drying at -40°C. In the case of enhanced configuration, the dehumidification dew point can be as high as -50°C. It is a choice for high-precision industries.
Hopper dryer Precautions
The plastic hopper dryer is a double-cone rotary tank. When the tank is in a vacuum state, steam or hot water is passed into the jacket for heating. The heat passes through the tank inner wall to contact with the wet material. The wet material absorbs heat and evaporates. , It is pumped away through the vacuum exhaust pipe by the vacuum pump. Since the tank body is in a vacuum state, and the rotation of the tank body continuously turns the material up and down, the drying speed of the material is accelerated, the drying efficiency is improved, and the goal of uniform drying is achieved.
+8613669807274
