simple description:Plastic dehumidifiers are used to dehumidify plastics or resins to achieve drying and improve product quality, such as: PC, PET, PE, TPU, PPO and other materials
Honeycomb plastic desiccant dryer There are many models of plastic dehumidifiers, and different parameters are set according to different products. The following is a general parameter table:
Honeycomb plastic desiccant dryer 1. The unit has high air pressure and uses top-out air to supply air. 2. The control part adopts advanced control components, which has the characteristics of high control precision and convenient adjustment. 3. The use of industrial fans has a long air supply distance, which is conducive to uniform temperature and humidity distribution in the room 4. The compressor is placed in the indoor unit, the whole system is more reliable, and it is equipped with high and low pressure gauges, which is convenient for equipment maintenance and repair 5. The original scroll type fully enclosed compressor is adopted, which is highly efficient and energy-saving 6. Taking into account the complex changes of the working environment, the system is equipped with complete automatic protection functions, such as high and low pressure protection, and fluorine deficiency related protection. 7. Control system: Electronic microcomputer temperature and humidity controller: digital temperature and humidity display, user parameter setting, easy operation and precise control; supporting high-precision temperature and humidity sensor, can automatically realize temperature and humidity control. 1. This machine adopts P.I.D. temperature control system, which can accurately control the regeneration temperature; 2. This series of dehumidification system adopts double cooler structure to ensure lower return air temperature and dew point; 3. Dry electric heating and temperature control meter are optional, and the drying barrel can be used to dehumidify and dry raw materials; 4. A return air filter is installed inside to ensure that the honeycomb wheel is not polluted by raw material dust. TD-H series honeycomb rotary dehumidifier is mainly used for high-efficiency dehumidification of engineering plastics with strong hygroscopicity. The honeycomb wheel used by our company can reach -40℃ under ideal conditions; the whole series adopt PID temperature control system as standard equipment, and also provide PLC control with LCD control touch man-machine interface for purchase, providing real-time The dew point meter that monitors the dehumidification effect of the machine is optional. There are 14 models in this series, and the maximum drying air volume can reach 4000m3/hr. 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. Honeycomb plastic desiccant dryer 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. Honeycomb plastic desiccant dryer 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.
Honeycomb plastic desiccant dryer Honeycomb plastic desiccant dryer Plastic dehumidifiers are mainly suitable for underground engineering, national defense engineering, archives, libraries, factory workshops, warehouses, computer rooms, and environments that require temperature and humidity. The temperature-adjustable dehumidifier can automatically adjust temperature, cool down and dehumidify. The temperature-adjustable dehumidifier integrates dehumidification and refrigeration functions with adjustable cooling capacity, which is especially suitable for dehumidifying places in high temperature and high humidity environments with large thermal load changes. The unit automatically runs in the cold air dehumidification mode, and the heat generated by the unit is dissipated into the outdoor atmosphere through the outdoor unit; in the low temperature, cold and humid environment, the unit automatically runs in dehumidification conditions. The cooling dehumidifier has a refrigeration function while reducing humidity, but the refrigeration function is not adjustable. It is suitable for dehumidification occasions with large heat load and no relative humidity requirements. The following are the corresponding parameters of general plastic or resin materials：
Plastic material
Dryer
Density (kg/dm3)
Drying time(h)
Drying temperature (℃)
Atmospheric flow (m3/kg）
Moulding moisture content
Initial moisture contnt（%）
ABS
√
0.55
2-3
85
2
<0.020
< 0.2
CAB
√
0.60
2-3
70
2
<0.020
< 0.6
EVA(2)
√
0.60
2-3
90-105
1.8
-
-
EVOH
√
0.60
2-3
90-105
2
-
-
LM(4)
√
0.50
3
600
2
<0.080
<0.2
LCP
√
0.80
3-4
150
2.2
< 0.01
<0.05
PA11
√
0.60
3-5
70-80
2
-
0.6-1.2*
PA6.46.6
√
0.60
4-6
70-80
2
0.15-0.02*
0.6-1.2*
PAI
√
0.85
6-8
180
2
<0.02
-
PAR
√
0.70
5-6
120
2
<0.02
-
PBT
√
0.80
3-4
130-140
2.2
<0.02
< 0.15
PC
√
0.65
2-3
120
2
< 0.02
< 0.3
PC/ABS
√
0.65
42798
100
2
< 0.020
<0.1
PC/PBT
√
0.75
3-4
110
2.2
-
-
PE.HDEPE.LDPE black3%
√
0.50
1
85
1.6
<0.01
<0.02
PE.HDEPE.LDPE black40%
√
0.70
2-3
80-90
2
<0.02
<0.2
PEEK
√
0.80
3-4
150-160
2.2
<0.05
<00.1
PE(1)(3)
√
0.75
4-5
140-160
2.5
<0.01
<0.2
PEN(1)(3)
√
0.86
5-6
150-170
3
<0.005
-
PES
√
0.80
3-4
150-180
2
<0.05
0.35
PET
√
0.84
5-6
160-180
3
<0.003
< 0.2
PETG
√
0.74
4-5
65
3.5
<0.01
<0.1
PI
√
0.70
2-3
120
2.2
<0.02
-
PMMA-
√
0.65
3-4
80
3
< 0.02
<0.3
POM
√
0.85
2-3
90-100
2
-
<0.15
PP
√
0.50
1
80-90
2
-
-
PPO
√
0.55
2
100-110
2
<0.01
-
PPS
√
0.80
2-3
130-140
2
<0.01
<0.03
PS[GPPS.EPS.HIPS]
√
0.55
1
80
1.7
<0.02
<0.05
PSU
√
0.80
3-4
120-130
2
<0.05
<0.1
PIT
√
0.80
5-6
130-150
3
<0.05
<0.2
PUR
√
0.75
2-3
70-90
2
<0.02
-
PVC
√
0.85
1
70-80
1.4
<0.02
-
SAN
√
0.55
2-3
80
2
<0.02
<0.1
SB
√
0.60
1-2
80
2
<0.02
-
TPE
√
0.65
2-3
110
2.2
<0.05
<0.3
TPE
√
0.65
2-3
80
2.2
< 0.1
-
TPO
√
0.55
3
70-90
2
-
-
TPU
√
0.75
2-3
70-100
2
< 0.02
-
Honeycomb plastic desiccant dryerWith 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.
Honeycomb plastic desiccant 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.
Honeycomb plastic desiccant 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.
Honeycomb plastic desiccant dryer 1. Under normal circumstances, the dehumidifier should be placed in the center, leaving enough space around, and the air inlet and outlet of the dehumidifier should not be covered by obstacles to keep the air unblocked. 2. Do not pull the power cord of the dehumidifier forcefully to move the dehumidifier during use. 3. When using the dehumidifier, the airtightness of the room should be good, otherwise, the dehumidification effect will not be obvious, and it will increase the load of the dehumidifier and affect the service life of the dehumidifier. 4. At present, most dehumidifiers on the market are equipped with computer automatic control systems, with four-speed fuzzy control gears. Except for the first gear when shutting down, they have suitable humidity (relative humidity: 70%-60%) and dry (relative humidity: 60%-50%) and continuous dehumidification (relative humidity: the lowest can reach 35%). When the indoor humidity is higher than the humidity of the corresponding selected gear, the machine will automatically start dehumidification; when the water tank is full, the machine will automatically stop working, and The water level indicator light is on to remind that the water tank is full, and the water must be poured out before the machine can operate again. 5. When the machine body must be moved, unplug the power cord first, and then pour out the water in the water storage bucket. After moving the dehumidifier, it is best to let it stand for 4 to 6 hours before turning it on. Because the compressor pipeline of the dehumidifier contains refrigerant, after being moved, the refrigerant can only return to its original position after a period of time.
Honeycomb plastic desiccant dryer operation process guide:
1. Honeycomb plastic desiccant dryer Purpose
Properly operate and maintain the Dehumidifying dryer and standardize the operation of the Honeycomb plastic desiccant dryer to ensure the baking quality of raw materials, increase the service life of the machine, and protect the safety of operators.
2. Honeycomb plastic desiccant dryer 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. Honeycomb plastic desiccant dryer 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,Honeycomb plastic desiccant dryer 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 Honeycomb plastic desiccant dryer. 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 Honeycomb plastic desiccant dryer 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 Honeycomb plastic desiccant dryer 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 Honeycomb plastic desiccant dryer 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 Honeycomb plastic desiccant dryer:
1. Honeycomb plastic desiccant dryer,dehumidifier dryer There is a damaged line;
2. Honeycomb plastic desiccant dryer To prevent electric shock, do not run the machine on a wet floor or after the machine is exposed to rain;
3.Honeycomb plastic desiccant dryer 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.Honeycomb plastic desiccant dryer Avoid vibration and magnetic influence in the work area.
6.Honeycomb plastic desiccant dryer 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.Honeycomb plastic desiccant dryer 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 Honeycomb plastic desiccant dryer:
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.
This is the manufacturer of Honeycomb plastic desiccant dryer Granule dryers http://global.wto-btb.com Information provided
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