标题:Dehumidification dryer
作者:
日期:2020-05-25 14:13:55
内容:
【Introduction】 As the name implies, the desiccant dryer is used in a humid environment. It can also be called a dehumidifier. It sucks in humid air and delivers dry air through the operation of the dryer. . There are two kinds of desiccant dryers, both domestic and industrial. If you want to know more about the dehumidification dryer,working principle, characteristics and operation process of the desiccant dryer sent to you by the next editor.
Dehumidification dryer is a dehumidification dehumidification drying equipment! There are vacuum dehumidification dryer, three-in-one dehumidification dryer, PET special dehumidification dryer, honeycomb dehumidification dryer, runner dehumidification dryer, Tpu special dehumidification dryer and other series! It is mainly developed and designed for engineering plastics with high hygroscopicity for efficient dehumidification. The dehumidification dryer will send the dehumidified low air into one or more standard drying hoppers to improve drying efficiency and shorten drying. time. How to strictly control the moisture in the raw materials is the key to processing high-quality plastic products. We all know that many engineering plastics are hygroscopic. When this plastic is taken out from the moisture-proof seal and exposed to the atmosphere, it starts to absorb moisture in the atmosphere. If you use a general traditional hot air barrel dryer, Use outside air with moisture to dry the plastic, so this method cannot prevent the plastic from continuing to absorb moisture.
Now with the widespread use of industrial plastics, dehumidification dryers have replaced traditional hot air dryers.
The three-in-one honeycomb rotary desiccant dryer is a new product developed based on the actual situation of the plastic industry.
The machine adopts multi-section honeycomb runner and all stainless steel double-layer down-blowing insulation hopper, integrating dehumidification, drying and feeding machines, and has the advantages of fast and simple feeding, compact structure, sturdiness and durability.
Through the operation of the compressor → discharge high temperature and high pressure gas → enter the condenser for cooling
→ Becomes a low-temperature and high-pressure gas → Cut through a capillary tube → Becomes a low-temperature and low-pressure liquid → Evaporate heat through an evaporator → Return
By then, the compressor becomes a low-temperature and low-pressure gas. This cycle back and forth.
Under normal starting conditions → Fan operation → Inhale humid air from the air inlet →
Through the evaporator → the evaporator absorbs the moisture in the air on the aluminum plate → becomes dry air → dissipates heat through the condenser →
Blow out from the air outlet.
Dehumidification dryer application
three-in-one dehumidification dryer | Crystal dehumidification dryer | Honeycomb runner dehumidification dryer | Tpu、PET special dehumidification dryer | There are vacuum dehumidification dryer |
0 |
Dehumidification dryer parameters
Plastic material |
Dryer |
(kg/dm3) Density |
(h) Drying time |
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 |
- |
1. Honeycomb flow channel with ceramic fiber as material, good dehumidification effect;
2. Can be equipped with PLC programmable touch screen, more complete functions;
3. Ultra-low dew point temperature can be obtained. Ordinary cooling water can reach a dew point of -40 ° C. Using cooler, it can reach ultra-low dew point above -50 ℃;
4. Continuous dehumidification and regeneration work to ensure that the dew point temperature is stable and that the dew point is stable below -40 ℃;
5. No pollution, ensure plastic quality;
6. The flow channel can withstand a high temperature of 1000 ° C, prevent fire, acid and alkali resistance, water washing resistance, and the average service life is more than 10 years;
7. The regeneration temperature is 180 ℃, which can save 2/3 of the time and 30-40% of energy compared with the traditional hot air dryer;
8. A dehumidifier can be used with several independent drying hoppers.
Operation process of dehumidification dryer:
1. Make sure that the installation and adjustment have been completed;
2. Please turn on the power switch of the control box and the power switch on the dehumidifier panel;
3. When the temperature rises to the set temperature, check whether it is consistent with the lower temperature;
4. Obtain the temperature indication of the water tank at any time, and perform troubleshooting and maintenance;
5. Keep 8 o'clock full at any time in the production barrel;
6. The raw materials must be dried before reaching the specified time before they can be produced;
7. Before stopping. First close the paper feed tray, pump the raw materials below, and then turn off the paper feed system.
8. The standard temperature of the baking material is as follows: "The temperature and time of the plastic raw material baking material are the set standards".
The dehumidifier dryer should be cleaned frequently and kept clean. The dehumidifier should be placed indoors in a position. Do not block the air inlet and outlet of the freeze dryer, and clean the air filter. When the ambient temperature is lower than 15 ℃, the water droplets attached to the surface of the evaporator will freeze and weaken the effect of the dehumidifier. If the ambient temperature exceeds 40 ° C, the pressure in the system will *** and overload the compressor. The protector should cut off the line, otherwise it will damage the compressor motor. Therefore, the temperature range of the dehumidifier is 15 ℃ ~ 40 ℃. If the humidity in the air is less than 30%, it is too dry and uncomfortable, so a reliable humidity controller can be controlled to keep it in the range of 50% to 60%. During use, doors and windows should be closed as much as possible to achieve the effect of indoor dehumidification. The main body of the dryer should be flat and must not be tilted or lowered to avoid machine malfunction or abnormal noise. The water storage in the desiccant dryer is too full. In order to avoid overflowing and polluting the ground, when the body must be moved during operation, the power cord must be unplugged before pouring water into the water storage bucket. After the dehumidifier moves statically for four to six hours, then start the machine. Since the compressor piping in the dehumidifier contains cold coal, the cold coal must be returned to its original position after four to six hours after being moved. Clean the air filter regularly (about once every two weeks) to maintain dehumidification, dust removal efficiency and machine life. Clean the air filter and rinse it with clean water below 40 ℃; it is best to clean it with detergent. After washing the dust, rinse with water, dry in a cool place, and then put it back in the body. When cleaning the body, please wipe gently with a damp cloth; avoid direct splashing water to avoid damage to electrical insulation. There are sticky objects on the surface of the fuselage, which can be washed with soapy water. Avoid spraying solvents or peeling or discoloration of paint. Do not use thin rods or iron wires to dig into the machine to avoid malfunction or; in the event of power failure or long-term unused, please unplug the power cord to maintain the life of the machine. RMD three machine integrated dehumidification dryer specifications technical parameter table:
The feeding equipment of RMD series three-in-one dehumidification dryer is installed on the movable bracket.
The dehumidification dryer is composed of three parts: honeycomb transfer dehumidification dryer, heat preservation drying barrel and vacuum cleaner.
The suction machine can transfer the raw materials from the drying barrel to the forming machine, or can transfer the raw materials from the storage barrel to the drying barrel.
The vacuum motor and safety filter dust collector delivered to the two forming machines are installed inside the machine.
According to different production needs: we can provide dust-removing optical-grade vacuum cleaners to separate and collect the powder in the raw materials.
The compact design of the device is suitable for precise injection of connectors, precision gears, mobile phone communications, digital cameras and product size requirements.
Production of engineering plastic products; the moisture content of the raw materials after dehumidification and drying is low and stable, which can meet strict technical and quality requirements.
【Concluding remarks】 About the working principle of the dehumidification dryer, the editor has explained it in detail for you, as well as its characteristics and operation process. Presumably everyone will have a deeper understanding of the dehumidification dryer after reading. Nowadays, the development of desiccant dryers in the pharmaceutical industry is very extensive. Everyone knows that drugs must avoid moisture. In addition, the editor reminds everyone that when the desiccant dryer is not in use, it should pay attention to cleaning work, keep it clean, and extend its use time limit.