With the development of society and the advancement of technology, the requirements for trolley ovens are getting higher and higher. From the old-fashioned electrical appliances in the past to the current intelligent control, there has been a qualitative leap in safety performance and energy conservation. The following is a brief introduction to several aspects of trolley ovens:
I. Main performance of Trolley Oven
1. The temperature is controlled by an intelligent program temperature controller, with PID parameter self-tuning, solid-state relay power regulation, contactless continuous adjustment, and automatic completion
The entire drying process can meet the requirements of any curing curve, is easy to operate and reliable in performance. We carefully select electrical control components both at home and abroad to ensure that the reliability of the electrical control part of the curing oven reaches the optimal level.
2. It can achieve timed intermittent automatic exhaust function within the process temperature range (optional according to user requirements).
3. Paper feed recorders, print recorders or paperless recorders can be selected to monitor the entire process and analyze the results of drying and curing.
4. According to the different placements of the products to be dried, select a reasonable hot air circulation method (top heating with vertical air supply, bottom heating with horizontal air supply, side heating with vertical air supply, etc.) to make the temperature inside the working chamber more uniform and the drying and curing effect of the coil better.
5. An independent over-temperature alarm system is also provided. When the temperature is abnormal, it can cut off the heating power supply and issue an audible and visual alarm.
6. A set of low-voltage lighting system can be optionally equipped. The door is equipped with an observation window, allowing the curing status of the workpiece to be observed at any time.
7. It adopts sealed electric heating tubes for heating, which are resistant to oxidation, have stable performance and a long service life.
8. Tracks are laid at the bottom, and different trolley drive methods such as manual drive, blunt rack drive, roller drive, and traction trolley drive can be selected according to the weight of the products to be dried.
9. According to the on-site usage conditions of the user, it can be controlled nearby. Multiple curing ovens can also be equipped with a computer distributed control system, which can centrally realize the setting of temperature control programs for multiple curing ovens, temperature curve recording and other functions. The operation is simple, convenient and the control is reliable.
Ii. Uses of Trolley Oven
The trolley oven is an energy-saving oven for industrial large-scale production purposes.
It is mainly used for drying transformer cores and coils, painting electrical cabinets and parts, rare earth, casting sand molds, motors and many other purposes. It adopts a trolley type feeding and discharging method, which is suitable for the automatic feeding and discharging of a large number of workpieces. In the production process of dry-type transformers, the processes such as core preheating, coil pre-drying, coil impregnation and drying, and resin curing are extremely crucial, directly affecting the quality of the transformer. Therefore, the temperature uniformity of the curing furnace and the reliability of the control system are required to be very high. The transformer curing oven produced by Wujiang Junhuan Machinery Equipment Co., Ltd. features excellent temperature uniformity, various flexible air supply methods, a mature and reliable control system, and an attractive appearance. It has been widely applied in dry-type transformer manufacturing enterprises across the country. The self-driven trolley oven can be used by factories and research institutions for baking, drying, heat treatment, disinfection, heating, heat preservation and other process equipment. It is widely used in low-temperature tempering, annealing, aging treatment and hot loading process of metal workpieces. It not only ensures the processing quality of the workpieces, but also improves production efficiency. The trolley is equipped with a drive device. Once the switch is turned on, it can automatically enter and exit. The working temperature of this box can range from room temperature to the maximum operating temperature. Within this range, the desired temperature can be freely selected. After reaching a constant temperature, the temperature can be automatically controlled by the electrical control system. Heaters and air ducts are installed on the left and right sides of the working chamber. There is a blower on the top of the working chamber. The blower mechanically convinizes the air inside the box through the air ducts, making the temperature inside the working chamber uniform and consistent. The temperature control of the oven adopts electronic temperature regulation automatic control and thermocouple sensors.
Iii. Precautions for the Use of Trolley Ovens
The trolley oven is a device that dries objects by heating them through layers of electric heating wires. It is suitable for baking, drying, heat treatment, etc. within the range of 5 to 300℃ (some up to 200℃) higher than room temperature, and the sensitivity is usually ±1℃. There are many models of trolley ovens, but their basic structures are similar. Generally, they consist of three parts: the box body, the electric heating system and the automatic temperature control system. Its usage and precautions are summarized as follows:
1.. The oven should be placed in a dry and level indoor area to prevent vibration and corrosion.
2. Pay attention to safe electricity usage and install a power switch with sufficient capacity according to the power consumption of the oven. Select sufficient power supply wires and there should be a good grounding wire.
For ovens equipped with an electrical contact mercury thermometer type temperature controller, the two wires of the electrical contact thermometer should be respectively connected to the two terminals on the top of the oven. Insert another ordinary mercury thermometer into the exhaust valve. (The thermometer in the exhaust valve is used to calibrate the electrical contact mercury thermometer and observe the actual temperature inside the box.) Open the hole of the exhaust valve. After adjusting the electrical contact mercury thermometer to the desired temperature, tighten the screws on the steel cap to achieve a constant temperature. However, it must be noted that when adjusting, the indicator iron must not be turned outside the scale.
4. Only when all the preparations are completed can the test samples be placed in the oven. Then connect and turn on the power. A red indicator light on indicates that the oven is heating up. When the temperature reaches the set temperature, the red light goes out and the green light comes on, marking the beginning of a constant temperature. To prevent the temperature control from malfunctioning, it is also necessary to keep an eye on it.
5. When placing the test samples, it should be noted that the arrangement should not be too dense. No test samples should be placed on the heat dissipation plate to avoid affecting the upward flow of hot air. It is prohibited to bake flammable, explosive, volatile and corrosive items.