Plastic Hopper Dryer
Why Choose Us
Profession
We specialize in the production of plastic crusher, plastic shredder, plastic mixer, vibrating screen, mold temperature controller, industrial water chiller, vacuum auto loader, hopper dryer.
Service
Free technical consultation, quote reply within 8 hours on working days, troubleshooting solution within 8 hours, free accessories during warranty period, lifelong technical support for the machine.
Public Praise
Adhere to the concept that product quality is the life of the enterprise. We are diligent, all to performance. We are proud, all to transform. We are product, all to help customers solve problems and save costs.
Our Product
Plastic crusher, plastic shredder, double shaft shredder, plastic mixer, plastic dryer, vacuum auto loader, industrial water chiller, mold temperature controller, vibrating sieve, dewatering machine, screw feeder, powder auto loader, Industrial water chiller, Knife sharpener, water cooler tower, plastic recycling line, baler, conveyor, etc.
What is Plastic Hopper Dryer?
A hopper dryer is a type of drying equipment used in the plastic processing industry. It is designed to remove moisture from plastic resins or materials before they are processed in injection molding, extrusion, or blow molding machines.
What Is The Function Of A Plastic Hopper Dryer?
A Plastic Hopper Dryer serves the function of removing moisture from plastic resin before it is processed in plastic molding or extrusion machines. The key functions of a Plastic Hopper Dryer include:
Moisture Removal
The primary purpose of a Plastic Hopper Dryer is to eliminate moisture or humidity from plastic resins. Moisture in the resin can lead to defects in the final plastic products, affecting their quality and structural integrity.
Preventing Defects
By removing moisture, Plastic Hopper Dryer help prevent defects such as bubbles, warping, or surface imperfections in molded plastic products. Dry resin ensures a more consistent and higher-quality end product.
Enhancing Product Quality
Dry resin ensures a more uniform and reliable manufacturing process, leading to consistent product quality. This is particularly crucial in industries where precision and product integrity are paramount.
Improving Molding Efficiency
Dry plastic resin processes more efficiently in molding or extrusion machines. It flows better, melts more consistently, and results in better-formed plastic products.
Reducing Production Costs
Efficient moisture removal can lead to reduced cycle times in the molding process. This not only enhances productivity but also contributes to energy savings and, in turn, reduces production costs.
Extending Equipment Life
Keeping plastic resin dry contributes to the longevity of molding equipment. Moisture in the resin can lead to corrosion and wear on processing machinery over time.
Types of Plastic Hopper Dryer
Dehumidifying dryer: Usually consists of a dehumidifying part and a drying part.The dehumidification technology (such as cooling dehumidification or rotary dehumidification) is first used to reduce the humidity of the air, and then the dehumidified air is used in the drying process of the material, and the air is heated by a heat ex-changer to accelerate the evaporation of water in the material.
Compressed air dryer：It is a device used to remove moisture and impurities from compressed air, ensuring that the quality of compressed air meets the specific requirements in industrial applications. Water and impurities in the compressed air are absorbed by adsorbents (such as activated carbon, silica gel or molecular sieve) and then the compressed air temperature is reduced by a cooler, so that the water vapor condenses into liquid water and is discharged, and then the filter is used to further remove solid particles and other pollutants in the compressed air.
Vacuum dryer：It is a kind of equipment that uses vacuum environment to dry materials. Air is pumped through a vacuum pump to create a low-pressure environment. Then use heating plate or heating belt to heat the material, accelerate the evaporation of water and condensate through the condenser into liquid water discharge to dry the material.
Hot air dryer：It is a kind of equipment that uses hot air as the drying medium to dry the material. The air is heated by a heater, such as an electric, gas or steam heater. The hot air is circulated in the drying box through the fan to heat the material evenly. Under the action of hot air, the surface moisture evaporates rapidly to achieve the drying effect.
How Does Plastic Hopper Dryer Work?
Plastic Hopper Dryer is one of the important equipment on the injection molding production line. It is mainly used to remove excess moisture from plastic raw materials to ensure the smooth progress of the injection molding process and the improvement of the quality of the final product.
The core function of Plastic Hopper Dryer is its efficient dehumidification and drying capabilities. During operation, wet air is first introduced into the machine. This step is the first step in the dehumidification process and lays the foundation for subsequent heat exchange and humidity control. Then, the heat exchanger in the machine starts to work. This component converts the humid raw material air into dry air through the heat exchange process.
Specifically, the heat exchanger uses heat energy to condense water molecules in the air into water droplets, and then discharges these water droplets out of the machine to achieve a dehumidification effect. This process ensures that the humidity in the production environment is effectively controlled and provides good conditions for subsequent plastic raw material processing. While dehumidifying, Plastic Hopper Dryer also uses a unique down-blowing air duct design to evenly disperse the high-temperature dry air in the insulation barrel to dry the raw materials. This design can keep the temperature of the plastic raw materials stable, improve the drying efficiency, and ensure that the raw materials reach the best drying state before injection molding.
Plastic Hopper Dryer also has the characteristics of intelligence and environmental protection. With the development of industrial intelligence, the equipment can be linked with other production equipment to realize the automation of the production process and improve the intelligence level of the overall production line. In order to respond to environmental protection needs, future dehumidification dryers will pay more attention to the application of environmental protection technology, adopt more environmentally friendly refrigerants and efficient energy utilization methods, and reduce the impact of equipment on the environment.
In specific operations, Plastic Hopper Dryer uses a vacuum system to suck the raw materials from the storage barrel into the drying barrel. In the drying barrel, the raw materials will be heated and circulated with hot air to remove moisture from its surface. In this process, air volume, temperature, dew point and pressure are four key factors, which together determine the quality of the drying effect. By precisely controlling these factors, Plastic Hopper Dryer can ensure that the raw materials achieve the best drying effect during the drying process.
Plastic Hopper Dryer achieves efficient dehumidification and drying of plastic raw materials through heat exchange and humidity control technology. Its unique down-blowing air duct design and intelligent and environmentally friendly characteristics make this equipment play an irreplaceable role in the injection molding production line. By deeply understanding its working principle, we can make better use of this equipment to improve the production quality and stability of plastic products.
Selection Guide Of Plastic Hopper Dryer
The applicability
Hot Air Hopper dryer should be able to meet the basic operating requirements of plastic drying, including good material management (feed, transport, hot air, heat transfer, discharge, etc.). Basically, It can achieve the drying effect, product quality, drying speed and other basic requirements.
Simple structure
The structure of the dryer needs to be simple, the parts need to be easy to replace and easy to buy.
Operation mode
The operation mode should be simple and easy to learn, avoiding complex settings, so as to avoid the time and cost of training skilled workers.
Drying temperature
Drying temperature refers to the point of drying air entering the barrel. Drying temperature has certain point for each kind of raw material because of its different physical properties, such as molecular structure, density, specific heat and moisture content. If the temperature is too high it will make some additives in the material volatilize or agglomerate. However, if the temperature is too low, certain crystalline materials will not achieve the required dry conditions.
Drying time
Drying time refers to the pre-drying time of raw materials before forming. Too long drying time will result in deterioration or agglomeration of raw materials or waste of energy. Too short drying time will cause the phenomenon of excessive moisture content.
Installation
Before installation, please drill holes on the standard base of the hopper dryer according to the installation diameter of the opening on the injection molding machine. Then place the hopper dryer vertically on the hopper opening and tighten it with the screws.
Power Supply
Standard hopper dryer power supply voltage: 1Ø 230V,50Hz (LHD-12), or 3Ø 380V,50Hz. It also can be ordered especially according to customer’s requirement.
Connecting to the Power Source
Open the distribution box and connect the power source in accordance with the wiring diagram. Please check if the power source voltage is in compliance with the required specification firstly. Then check if the switch and load are proper and safe. Next, switch on the blower to check if it turns in the right direction.
Test the Hopper Dryer
After all the wires are connected, turn on the main switch and the heater switch, then the indicator will light. Please check if the rotating direction of the blower is in keeping with the direction of the arrow sticker, if not, exchange any two of the cables.
Setting Temperature
Please refer to the Drying Temperature Table of Plastic Materials as below and set the value 0~199℃. After heating some time, the yellow and red indicator light in turn. That means it has reached the set temperature. Meanwhile, please observe the temperature on the controller is in accordance with that on the meter at the bottom of the hopper dryer or not. The error is ±3℃.
Temperature Controller
All the parameters have been set before ex-factory, so there is no need to change it. If a set error occurs unintentionally, you can reset to the factory setting as above instruction.
Stop the Machine
Firstly turn off the switch of the heater. After the heating tube has fully cooled down in about 10 minutes, please turn off the blower switch. Stopping the hopper dryer in this way will prolong the service life of it.
Service and Maintenance
Clean the blower regularly (especially the air inlet path).
Eliminate the fan’s dirt regularly to avoid damage to the blower.
Make sure the screen separator and shade separator (big and small cones) are in shape.
The Impact Of Regular Maintenance On The Longevity And Performance Of Plastic Hopper Dryer
Regular maintenance plays a crucial role in ensuring the longevity and optimal performance of hopper dryers. By implementing a consistent maintenance routine, you can prevent potential issues from arising and keep your equipment running smoothly.
One of the main impacts of regular maintenance is that it helps to identify and address any minor problems before they escalate into major ones. This proactive approach allows you to fix issues early on, preventing costly breakdowns or malfunctions down the line. Regular cleaning and inspection of key components such as filters, heating elements, and fans can help prevent clogging, overheating, or reduced efficiency.
Additionally, proper lubrication of moving parts ensures smooth operation while reducing wear and tear. Lubricants not only minimize friction but also protect against rusting or corrosion. Similarly, checking electrical connections for loose wires or damaged insulation helps maintain safe operating conditions while avoiding potential electrical hazards.
Furthermore, regular maintenance allows for calibration and adjustment of temperature controls and sensors. Over time, these critical components may drift out of their optimal range due to environmental factors or normal wear. By regularly recalibrating them during maintenance sessions, you can ensure accurate temperature control for efficient drying processes.
Another significant impact is improved energy efficiency. Well-maintained hopper dryers operate more efficiently by consuming less energy to achieve desired drying temperatures consistently. This not only reduces operational costs but also contributes to a greener environment by minimizing energy waste.
Regular maintenance significantly extends the lifespan of hopper dryers by addressing minor issues promptly before they become major problems that require expensive repairs or replacements. It enhances overall performance by optimizing component functionality and maintaining ideal operating conditions throughout its service life.
Our Factory
Our company has 11 years of production experiences in OEM processing services for plastic auxiliary equipment before its establishment. We always adhere to the "quality of survival, integrity management" as the value of Xucai environmental technology. Our company's products have passed the Europe CE certification. We strictly controls the whole process of product design, production, quality inspection and after-sale service, making Xucai's machines sell well domestic and foreign and received a consistent praise. Our machines have been sold to more than 50 countries and regions around the world.
FAQ
We're well-known as one of the leading plastic hopper dryer manufacturers and suppliers in China. Please feel free to buy high quality plastic hopper dryer made in China here from our factory. For price consultation, contact us.
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