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plastic resin dryers

plastic resin dryers Details description
product name:plastic resin dryers
release time:2020-09-05
Numbering:plastic resin dryers-001
Brand:HENGJU
Price:¥By function
weight :By function
unit weight:Kg/set
manufacturer:hengju
patent:hengju
Producing country:china
simple description:Mainly used for the dehumidification of plastics, resins, PET, PE, PC, PPO, TPU, PLA and other plastics, so that the materials can be dried to improve the quality of plastic products
Product alias:plastic resin dryers,Resin dehumidifier_Plastic dehumidifier_PET,PE,PC,PPO plastic dryer,Standard plastic dryer,resin dryer,Ordinary plastic dryer,Two-machine integrated dehumidification dryer,Dehumidifier dryer,Dehumidifying dryer,Plastic dehumidifying dryer
  plastic resin dryers Product introduction

plastic resin dryers parameter

Model

Capacity(kg)

Heater(kw)

Blower(w)

Overall Dimensions(cm)

Model suitable

Weight(kg)

MHD-12E

12

1.8

50

65X40X85

1oz

25

MHD-25E

25

3

90

75X50X105

3oz

35

MHD-50E

50

3.9

100

90X55X120

5-8oz

45

MHD-75E

75

3.9

100

95X60X130

8-10oz

50

MHD-100E

100

6

250

100X70X140

10-20oz

70

MHD-150E

150

6

350

110X75X160

15-20oz

80

MHD-200E

200

12

350

120X85X170

20-30oz

120

MHD-300E

3300

15

350

145X100X185

25-30oz

120

MHD-400E

400

18

550

150X105X200

30-40oz

230

MHD-500E

500

21

750

150X105X210

40-50oz

250

MHD-600E

600

21

750

150X105X220

40-50oz

250

MHD-800E

800

27

750

150X110X240

50-60oz

300

MHD-1000E

1000

30

1100

185X135X270

60oz以上

400

MHD-2000E

2000

60

5500

1480X1800X3600

60oz以上

780

MHD-3000E

3000

64

7500

1600X2010X4050

60oz以上

1150

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plastic resin dryers Equipment principle

The dehumidification methods of dehumidification dryer are:
1. Dehumidification by adsorption wheel
The thin plate impregnated with hygroscopic agent is processed into a honeycomb wheel for ventilation to achieve the dehumidification effect.
2. Liquid absorption dehumidification

There are two types of liquid absorption dehumidification, one is to use the spray of lithium chloride aqueous solution to absorb water, the dew point can be reduced to about, but the equipment is larger, and the absorption liquid must be replaced; the other is to use capillary action to absorb water on the solid On the moisture absorbent, the dew point can be reduced, but the equipment will also become larger when the adsorption area is large.
3. Compression and dehumidification
Compress and cool the moist air to separate its moisture to achieve dehumidification effect. It should be noted that this dehumidification method is effective in small air volume occasions, but is not suitable for large air volume.
4. Cooling and dehumidification
The air is cooled to below the dew point, and then the condensed moisture is removed to achieve the dehumidification effect. This method is effective when the dew point is above.
The dehumidifier dryer system (compressor, evaporator, condenser) reduces the temperature of the surface cooler below the dew point temperature of the air, and a fan draws moist air into the machine for heat exchange with the surface cooler. The humid air When the water vapor is condensed and formed into water droplets, it is discharged out of the body or into the water tank in the body, and dry air is discharged into the room. This circulation reduces the indoor humidity, and the humid space achieves a dry effect.
Industrial dehumidification dryers can also choose temperature-regulating dryers, which can adjust the temperature by themselves according to the degree of dryness of the product. Heavy-duty industrial dehumidification dryers are general, but general air dehumidification and drying are also available for drying.

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. plastic resin dryers 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. plastic resin dryers 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.

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plastic resin dryers application

plastic resin dryers The contact surface of the fuselage is made of all stainless materials.
Precision die-cast aluminum shell, smooth surface, good heat preservation performance.
Silent fan, optional air filter to ensure the cleanliness of raw materials.
The proportional deviation indicating temperature controller is used to accurately control the temperature.
Both the barrel body and the machine base are equipped with sight windows, which can directly observe the internal raw materials.
The curved design of the electric heating cylinder avoids burning caused by the accumulation of raw material powder at the bottom of the cylinder.
The cast aluminum mold is independently designed, and the barrel is turned back to fit any manipulator.
Another 50-800kg insulation type is available: double-layer material barrel, stainless steel electric heating tube, heat dissipation electric heating tube.
Mainly used for the dehumidification of plastics, resins, PET, PE, PC, PPO, TPU, PLA and other plastics, so that the materials can be dried to improve the quality of plastic products plastic resin dryersWith 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.

plastic resin dryers 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.
plastic resin dryers 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.
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plastic resin dryers Precautions

一. Precautions for operation of desiccant dryer:
1. Make sure that the dehumidification dryer has been installed and adjusted;
2. Turn on the power switch on the control box power supply and the dehumidifier panel;
3. Check the temperature indication of the material barrel frequently, and repair it in time if any malfunction is found;
4. When the temperature rises to the specified temperature, check whether it is consistent with the temperature of the lower part;
5. Keep the barrel full at any time during production;
6. The raw materials can be produced only after the specified drying time is fully reached;
7. When the drying is completed, when the machine is to be shut down, close the feeding plate first, and then close the feeding system after pumping the bottom raw materials.
 二. Maintenance of dehumidification dryer:
1. Please confirm to provide cooling circulating water before machine operation;
2. Regularly clean the dehumidification return air aluminum mesh and the recycled motor aluminum mesh;
3. Regularly check whether the pipeline is damaged, loose, or dew;
4. Regularly check whether the floating belt is worn.

plastic resin dryers operation process guide:


1. plastic resin dryers Purpose 
Properly operate and maintain the Dehumidifying dryer and standardize the operation of the plastic resin dryers to ensure the baking quality of raw materials, increase the service life of the machine, and protect the safety of operators.
2. plastic resin dryers Scope It is applicable to the operation of all desiccant dryers in our factory.
3. Definition None
4. Operational Responsibilities The feeder in the injection molding department uses the dehumidifier and dryer correctly in accordance with this operating instruction to protect the dehumidifier from damage and normal operation, and ensure that the machine is clean and tidy.
5. plastic resin dryers Content
5. 1 Put all the current disconnect switches in the control box to the "ON" position, press the RUN/STOP key on the control panel, the indicator light will light up to start operation, and press RUN/STOP again during operation. ] Key, the indicator light flashes slowly, cooling operation, it will shut down after 5 minutes of operation.
5. 2 Setting of drying temperature: Press the mode switch【MOKE CHANGE】key twice, at this time the drying temperature setting display shows the symbol of C unit, press
5. 3 One-time conveying operation: press the LOADRI RUN/STOP] key of conveying 1 and the material is sent from the storage bin to the drying barrel. At this time, the indicator light flashes quickly, and when conveying 1 is pressed again, the operation will start. /Stop【LOADRI RUN/STOP】key,plastic resin dryers the indicator light flashes slowly until it stops, when the indicator light does not flash, it means that the bucket is full.
5. 4 Secondary conveying material operation: press the LOADRI RUN/STOP button of conveying 2 to send the material from the drying barrel to the machine storage hopper. At this time, the indicator light flashes quickly plastic resin dryers. When conveying 2 is pressed again Run/stop] LOADRI RUN/STOP] key, the indicator light flashes slowly until it stops, when the indicator light does not flash, it means that the bucket is full.
5. 5 The three-time conveying operation is the same as the second-time feeding operation mode, but the key is the conveying 3 run/stop]LOADRI step RUN/STOP] key.
5. 6 When Dehumidifying dryer is automatically operated to transport materials from the storage box to the drying cylinder and from the drying cylinder to the hopper of the forming machine, the conveying must be opened first
5. 8 Maintenance and maintenance of desiccant dryer:
5.8.1 plastic resin dryers delivery 1-3 Filters and dryer filters must be cleaned once every shift.
5.8.2 When the machine is maintained and repaired, all current switches in the control box must be set to the "OFF" position.
5.8.3 The material in the plastic resin dryers can only be used by the random molding machine (except for special circumstances).
5.8.4 When conveying 2 (transporting 3) is in operation, pay attention to opening the drying cylinder unloading valve about half to prevent the remaining material in the conveying pipe from blocking the conveying pipe and affecting feeding when the conveying 2 (conveying 3) stops.
5.8.5 The machine will generate high temperature during operation. Please take care to prevent burns. Do not touch the operation panel with wet hands, otherwise electric shock may occur. Note: The PET material of Hexing Parts must be produced with this machine, and other materials must be produced with a dehumidifying dryer according to the physical property table.
6. Reference file "Dehumidifying dryer operation manual"
7. Relevant records Dehumidifying dryer drying material record sheet Dehumidifying dryer maintenance check sheet
Practice has proved that reducing the dew point of the drying wind to below -40°C while controlling the du heat to blow over the surface of the wet plastic particles can reduce the moisture content of it to below 0.02% before molding. The plastic resin dryers is used The air is fully dehumidified and heated in a closed circulation system, and the dry air quickly completely separates the moisture in the plastic particles to achieve the effect of dehumidification and drying. So, do users know when they cannot use the machine?

Under what circumstances cannot be used plastic resin dryers:


1. plastic resin dryers,dehumidifier dryer There is a damaged line;
2. plastic resin dryers To prevent electric shock, do not run the machine on a wet floor or after the machine is exposed to rain;
3.plastic resin dryers If the machine is damaged or disassembled, it should not be overhauled and installed by professional maintenance personnel;
4. During the operation of the machine, at least 1m of surrounding space is required. Please protect this device and flammable materials at least 3m away;
5.plastic resin dryers Avoid vibration and magnetic influence in the work area.
6.plastic resin dryers When the ambient temperature is lower than 15℃, the water droplets attached to the surface of the evaporator will freeze to weaken the effect of the dehumidifier. If the ambient temperature exceeds 40℃, the pressure in the system will increase and the compressor will be overloaded. The protector should cut off the circuit, otherwise the compressor motor will be damaged. So the best temperature range of dehumidifier is 15℃~40℃. If the humidity in the air is below 30%, it will be too dry and uncomfortable, so a reliable humidity controller will control it to maintain the range of 50% to 60%. When using, close the doors and windows as much as possible, so that the indoor dehumidification effect is good. The body of the desiccant dryer must be placed flat, not tilted or turned sideways, to avoid machine failure or abnormal noise.
7. The water storage in the Dehumidifying dryer is too full. In order to avoid overflowing and contaminating the ground, when the machine body must be moved during operation, please unplug the power cord first, and then pour out the water in the water storage bucket. Clean the air filter regularly (about once every two weeks) to maintain the dehumidification and dust removal efficiency and life of the machine. Clean the air filter and wash it with water below 40℃; it is better to clean it with detergent. After washing off the dust, rinse it with water, dry it and put it back into the body.
8.plastic resin dryers When cleaning the body, wipe it lightly with a damp cloth; avoid directly splashing water for cleaning, so as not to damage the electrical insulation. Adhesives on the surface of the body can be cleaned with soap and water. Avoid spraying with gasoline, petroleum spirit, solvents or spray insecticides to avoid peeling paint or discoloration. Do not use thin rods or iron wires to dig out the inside of the machine to avoid malfunction or danger. Please unplug the power cord to maintain the life of the machine when it is out of power, not used for a long time, or when traveling!

Precautions when using plastic resin dryers:


First, please carry out electrical construction in accordance with the "Electrical Equipment Standards", "Inside Wiring Regulations" and this operating manual.
Second, please do not use power sources other than those specified.
Third, please complete the specified grounding works. (Yellow power cord)
Fourth, please fasten the connectors and connection terminals of the machine body and measuring instrument wires.
Fifth, the power supply must be cut off before the line inspection, and the voltage must be measured with a multimeter after 10 minutes to ensure safety before proceeding with the inspection.
Sixth, do not open the control box door at will during the power-on process.
Seventh, do not touch the machine body, control unit, and other accessories with wet hands.
Eighth, please do not damage the wires, do not put pressure on the wires, do not place heavy objects on the wires, and do not clamp the wires. It may cause electric shock.
Ninth, please professional and technical personnel for wiring and inspection.
Tenth, when you need to disassemble the machine for inspection and cleaning, please cut off the power and compressed air source first.
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