TEG Cleaning Device (TEG series)
Cleaning Objects: Spinneret or Filter of  PET、PA
Cleaning Objects
  
Function :
Triethylene glycol (TEG) is a colorless and transparent neutral oily liquid. When heated to about 280 °C, it owned the function of alcohol solution and the dissolution to the polymer polyester (PET). With this property, to put the work piece adhere with high adhesion Polyester dirt in the wash tank with TEC solution for boiling alcohol solution, the cleaning purpose can be achieved. This equipment adopts the stainless steel electric heating pipe combination as the heater which is heated directly in the TEG solution at the bottom of the washing tank。
Take device model TEG-1015 as example for the details:
§Cleaning ability：
φ104mm Spin-pack, 280pcs can be cleaned at the same time in this equipment.
§ Technical information
§Structural features       
TEG cleaning device composed of a furnace body, a condenser and a liquid seal tank, stainless steel basket and electrical control system.
The electric heating element is directly inserted into the TEG solution to heat, and the furnace cover is opened for cylinder driving.The upper part of the cylinder body is provided with an overflow port, a feeding port and a condenser interface, and the bottom is provided with a sewage outlet, a heater mounting port, a hand hole, etc..
In order to shorten the opening time of the equipment after cleaning and improve the utilization rate of the equipment, a cooling jacket is arranged outside the cleaning groove barrel.The magnetic coupling turned column level meter shows the furnace level, level meter with low liquid level alarm protection function.The electric heating element junction box is a positive pressure explosion isolation structure, the filling medium is pressure air, and is interlocked with the heater, that is, when the junction box has no pressure, the heater does not act.
Because the furnace cover is heavier, the cylinder is used to open the furnace cover, which is convenient for operation, reduces labor intensity and improves work efficiency.
§ Materials of Device
1、Tank body and furnace lid using SUS304 & 6mm board to produce, do pressure testing, leakage check after forming.
2、The jacket made of 5mm heat-resisting stainless steel plate, by GB-150 steel container standard making; 2mm stainless steel for shell ; between the outer panel and cylinder filled with high-quality aluminum silicate cotton insulation, all appearance welds are kerosene leakage test, and the protection plate on the bottom of the furnace mouth with thickness beyond the insulation layer in the fan-shaped. In order to prevent the basket hanging out the TEG medium drops into the cotton insulation caused security accident.
3、Contact with TEG flanges and steel pipe, the materials are heat-resistant stainless steel.
4、Level gauge:the use of stainless steel magnetic coupling plate type level gauge, and with the level lower limit alarm.
5、Electric heater: stainless steel heating pipe, heating power 60kW, composed of 33 "U" type stainless steel electric heating element welded flange directly into the furnace in the TEG medium heating, each power 2kw, the actual use of 30, the other three spare, the electric heating wire is made of Ni20Cr80 alloy (Shanghai Alloy factory produced) the service life of the heater is not less than three years.
6、Hanging basket: stainless steel material, 7 layers cleaning spinnerets. Heat-resistant stainless steel.
7、Condenser: stainless steel material, shell and tube type structure, condensing area is 3.5m2.
8、Pneumatic components: cylinder, manual valve, steam source triple
9、Insulation cotton: high - temperature aluminum silicate cotton;
§Control system
According to the working principle and requirements of TEG cleaning furnace, the use of two sets of instrument control, one set of instruments to control the electric heater temperature and has anti-dry protection, another instrument control TEG medium temperature. Two sets of instrument safety interlock, double protection, when over-temperature, cut off the heating main power, and sound and light alarm, to ensure the normal operation of equipment and fault self-protection. The instrument has PID manual and can auto-tuning to set the best parameters, input excellent control signal to drive the heating control device (solid state relay), heating control device with automatic temperature cooling and fault self-diagnosis protection to ensure temperature control accuracy. At the same time,double-cut function has both time and temperature, ensure the cleaning effect. In order to ensure the safe use of the equipment, the heater and magnetic coupling plate level gauge interlock protection --- when the TEG below the set level, the heating element does not work; heater junction box without pressure, heating component does not work; condenser without water or water pressure is too low, the system alarm and automatically cut off the source.
The cleaning process ends, the system has an automatic shutdown function.
§Flowchart

Supporting device-Alkali/ Water cleaning device （ACD/WCD series)
 
§1.Configuration §2.Principle
Alkaline (water) cleaning device is matching TEG cleaning equipment,Vertical cylindrical structure, open cover for cylinder type.
In order to ensure the best effect of cleaning parts,Steam heating coil in trough and bottom.And a grid layer placed at the bottom of the tank and bracket in chlorophytum. The cylinder is equipped with lye, entrance overflow and steam pipe entrance, thermometer, At the bottom of the tank with the outfall.
§3. Technical Parameter