Enameling machine based on new energy fuel

Abstract

The utility model relates to the technical field of enameled wire production, in particular to an enameling machine based on new energy fuel. Comprising an oven, a combustion device, a waste gas treatment device and a temperature control system. According to the combustion device, biological blended fuel oil or liquid wax alcohol ether is adopted as fuel, traditional electric heating is replaced by a fuel oil burner and a high-temperature combustion chamber, and high-temperature hot air is conveyed to a curing area and an evaporation area of the baking oven in combination with a main circulating fan to complete baking of the enameled wire. The waste gas treatment device recycles heat through a waste heat exchanger and maintains negative pressure in the furnace through a waste discharge fan, and efficient decomposition and purification of organic waste gas are achieved. The temperature control system is linked with the PLC through a plurality of temperature measurement sensors, fuel supply and air speed are dynamically adjusted through a PID algorithm, and it is ensured that the temperature error of a curing area is smaller than or equal to + / -1 DEG C. The utility model solves the problems of high energy consumption and heavy pollution of the traditional process, and has the advantages of energy conservation, high efficiency, environmental protection, cleanness, low operation cost and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the enamelled wire production technical field, concretely to an enamelling machine based on new energy fuel. BACKGROUND

[0002] In the enamelled wire production process, baking is a key process, and the traditional process usually adopts the way of electric heating to generate hot air to bake and solidify the enamelled wire. However, electric heating has the following problems:

[0003] 1. High energy consumption: electric heating has low efficiency, long heating time, high energy consumption, and high production cost,

[0004] 2. Environmental pollution: the traditional electric heating uses a catalyst to catalyze and burn volatile organic compounds VOCs in waste gas, which can only achieve less than 78% of purification treatment, and the catalyst is easy to fail and needs to be replaced, cleaned, and maintained regularly, with high cost. When the catalytic effect is poor, it cannot be found and treated in time. It cannot effectively treat organic waste gas such as volatile organic compounds VOCs generated during the baking process, causing environmental pollution.

[0005] 3. High operating cost: the price of electric power resources is relatively high, and it is difficult to achieve large-scale energy saving due to the limitation of power grid load.

[0006] In view of the above shortcomings of electric heating, the researchers propose to use new energy fuel as the energy source of the baking furnace, and how to apply new energy fuel in the enamelled wire baking furnace to solve the problems of high energy consumption and organic waste gas is a direction to be studied. CONTENT OF THE UTILITY MODEL

[0007] The problem to be solved is to provide an enamelling machine based on new energy fuel, to solve the problems of high energy consumption and serious environmental pollution of the traditional electric heating method, and to realize efficient energy saving and clean production.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an enamelling machine based on new energy fuel, comprising a baking furnace, the baking furnace comprising a curing zone and an evaporation zone, characterized in that: the baking furnace is heated by a combustion device, and the baking furnace is further connected with a waste gas treatment device and a temperature control system; the combustion device comprises a fuel control module, a fuel burner, and a high-temperature combustion chamber; the high-temperature combustion chamber is located in the baking furnace and communicates with the curing zone and the evaporation zone of the baking furnace to form a main circulating air duct of the baking furnace; the waste gas treatment device comprises an exhaust fan (2) which is arranged above the high-temperature combustion chamber and communicates with the high-temperature combustion chamber; the temperature control system comprises a plurality of temperature sensors located in the baking furnace, and the plurality of temperature sensors are connected with a PLC controller. Preferably, the combustion device uses bio-blended fuel oil or liquid wax alcohol ether as fuel.

[0009] Preferably, the combustion device further comprises a burner combustion fan which communicates with the high-temperature combustion chamber.

[0010] Preferably, a waste heat exchanger is arranged between the high-temperature combustion chamber and the exhaust fan, and the waste heat exchanger is arranged above the high-temperature combustion chamber.

[0011] Preferably, the main circulating air duct of the oven is provided with a main circulating fan, and the main circulating fan delivers the high-temperature hot air from the high-temperature combustion chamber to the curing zone and the evaporation zone of the oven to evaporate and cure the enameled wire.

[0012] Preferably, the temperature measuring sensors include an oven outlet temperature measuring sensor, a curing zone temperature measuring sensor, a backflow hot air temperature measuring sensor, and an oven inlet temperature measuring sensor.

[0013] Preferably, the main circulating air duct is provided with a hot air temperature measuring thermocouple, and the hot air temperature measuring thermocouple is located above the oven outlet.

[0014] Preferably, the oven is further provided with a fresh air fan, and a fresh air and hot air mixing zone is formed between the fresh air fan and the main circulating fan.

[0015] Preferably, the combustion temperature of the high-temperature combustion chamber is greater than or equal to 800 DEG C, and the residence time of the exhaust gas in the high-temperature combustion chamber is greater than or equal to 2 seconds.

[0016] Compared with the prior art, the utility model provides a new energy fuel based enameled wire machine, has the following beneficial effects:

[0017] 1. Energy saving and high efficiency: the new energy fuel bio-blended fuel oil and liquid wax alcohol ether have high calorific value and high combustion efficiency, and can significantly reduce energy consumption.

[0018] 2. Environmental protection and cleanness: the waste gas treatment device can effectively decompose organic waste gas and reduce environmental pollution.

[0019] 3. Low operation cost: the new energy fuel bio-blended fuel oil and liquid wax alcohol ether have low cost, and the waste heat recovery further reduces energy consumption; the new energy fuel bio-blended fuel oil and liquid wax alcohol ether are non-dangerous chemicals, convenient to store and transport; and the flash point is higher than 60 DEG C, which is safer.

[0020] 4. High degree of automation: the temperature control system realizes full-process automation, improves production efficiency and stability. DETAILED DESCRIPTION

[0021] Figure 1 It is a system structure schematic view of the utility model;

[0022] Figure 2 It is an exhaust gas treatment device isometric view of the utility model;

[0023] Figure 3 It is a system structure schematic view of the utility model Figure 1 It is an enlarged view of A in the utility model;

[0024] Explanation of reference signs: 1, waste heat exchanger; 2, exhaust fan; 3, combustion air fan of burner; 4, main circulating fan; 5, impeller of main circulating fan; 6, fresh air and hot air mixing area; 7, fresh air fan; 8, fuel control module; 9, hot air temperature measuring thermocouple; 10, enameled wire; 11, temperature sensor for outlet of oven; 12, temperature sensor for curing area; 13, high-temperature combustion chamber; 14, temperature sensor for return hot air; 15, temperature sensor for inlet of oven; 17, fuel burner. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be described below with reference to the drawings in the embodiments of the utility model:

[0026] To solve the above problems, the utility model provides a kind of based on new energy fuel's enameled machine, by new energy fuel replaces traditional electric heating, and combining waste gas treatment technology, realize efficient energy saving and environmental protection production. Figure 1 As shown in the drawing, it includes oven, combustion device and temperature control system, and the oven is used for evaporation and curing of enameled wire 10, and the oven is provided with temperature control system inside to ensure stable baking temperature.The heat of the oven comes from the combustion device, and the combustion device uses bio-harmonized fuel oil or liquid wax alcohol ether as heat source to replace traditional electric heating mode.The combustion device includes fuel control module 8, fuel burner 17 and high-temperature combustion chamber 13, and the fuel control module 8 dynamically adjusts the fuel supply amount of fuel burner 17 and the air speed of main circulating fan 4 by PID algorithm to maintain the temperature error of curing area ≤±1℃;Combustion air fan 3 is communicated with high-temperature combustion chamber 13 to provide preheating combustion air, and the combustion temperature of high-temperature combustion chamber 13 is ≥800℃, part of high-temperature area is >1200℃, and the residence time of waste gas in high-temperature combustion chamber 13 is ≥2 seconds to ensure sufficient combustion and decomposition.The high-temperature combustion chamber 13 is located in the oven and is communicated with the main circulating air duct of the oven, and the starting point of the main circulating air duct is the space in the high-temperature combustion chamber 13, and then passes through main circulating fan 4, fresh air and hot air mixing area 6, curing area of the oven, evaporation area of the oven in turn, and finally returns to high-temperature combustion chamber 13 to form a closed loop channel, as shown by the dotted line in Figure 1 The main circulating air duct of the oven is provided with main circulating fan 4, and the main circulating fan 4 is provided with main circulating fan impeller 5, which delivers high-temperature hot air from high-temperature combustion chamber 13 to the curing area and evaporation area of the oven for baking and curing of enameled wire 10, and the main circulating air duct is provided with hot air temperature measuring thermocouple 9, which is located above the outlet of the oven.

[0027] The oven is also connected with a waste gas treatment device, the waste gas treatment device comprises an exhaust fan 2, the exhaust fan 2 is arranged above the high-temperature combustion chamber 13, the exhaust fan 2 is used for maintaining negative pressure in the oven and discharging part of the purified gas, and the remaining gas returns to the oven through the circulating channel to participate in the hot air circulation; a waste heat exchanger 1 is arranged between the high-temperature combustion chamber 13 and the exhaust fan 2, and the waste heat exchanger 1 is arranged above the high-temperature combustion chamber 13. The organic waste gas generated by baking is burned and decomposed in the high-temperature combustion chamber 13, and then the waste gas heat is recovered through the waste heat exchanger 1 to preheat fresh air;

[0028] The temperature control system comprises a plurality of temperature measuring sensors arranged in the oven, the plurality of temperature measuring sensors are connected with a PLC controller, and the plurality of temperature measuring sensors comprise an oven outlet temperature measuring sensor 11, a curing zone temperature measuring sensor 12, a backflow hot air temperature measuring sensor 14 and an oven inlet temperature measuring sensor 15. The oven outlet temperature measuring sensor 11, the curing zone temperature measuring sensor 12, the backflow hot air temperature measuring sensor 14 and the oven inlet temperature measuring sensor 15 are used for adjusting the baking temperature and the waste gas treatment efficiency in real time. The oven is also provided with a fresh air fan 7, and a fresh air and hot air mixing area 6 is formed between the fresh air fan 7 and the main circulating fan 4.

[0029] In use, the combustion device ignites and burns the fuel atomized by the fuel burner 17 to generate high temperature of 800 DEG C or above in the high-temperature combustion chamber 13, the main circulating fan 4 continuously blows the high-temperature hot air generated by burning the organic compounds evaporated in the enameled process to circulate in the main circulating air duct, and the circulating path is indicated by arrows in the figure. Figure 1 The main circulating fan 4 continuously blows the high-temperature hot air in the oven channel into the fresh air and hot air mixing area 6, and then the high-temperature hot air enters the curing zone to cure the paint film of the enameled wire 10, and the enameled wire 10 moves from left to right. After preheating, evaporation and curing of the circulating hot air in the main circulating air duct, the enameled process is completed. The oven outlet temperature measuring sensor 11, the curing zone temperature measuring sensor 12, the backflow hot air temperature measuring sensor 14 and the oven inlet temperature measuring sensor 15 transmit signals to the PLC controller, the PLC controller adjusts the rotating speeds of the main circulating fan 4 and the fresh air fan 7 according to the collected temperature data, and the fuel control module 8 ensures that the temperature of the high-temperature combustion chamber 13 is stable within the set range.

[0030] The waste gas treatment device absorbs evaporated organic compounds and organic waste gas into the high-temperature combustion chamber 13 during the baking process, and the structure of the high-temperature combustion chamber 13 enables the passing gas to pass through a space at about 1200 degrees for more than 2 seconds. After the evaporated organic compounds and organic waste gas are decomposed by heat, the purified gas is discharged under the action of the exhaust fan 2 to maintain the negative pressure in the oven. Most of the purified gas is recycled into the oven curing area and the evaporation area. The discharged waste gas can be discharged after absorbing a certain amount of heat through the waste heat exchanger 1. The new air blown by the burner combustion fan 3 is used to recover waste heat for preheating new air. The burner combustion fan 3 serves as a combustion fan for the fuel burner 17. The new air blown by the burner combustion fan 3 enters the fuel burner 17, is pressurized after being atomized, is sprayed and burned, and the air speed and volume are adjusted under the control of the fuel control module 8 to achieve efficient and stable combustion.

[0031] The utility model discloses a varnishing machine based on new energy fuel, which provides efficient heat source through the combustion device (fuel control module 8, fuel burner 17 and high-temperature combustion chamber 13), the main circulating fan 4 delivers high-temperature hot air to the oven curing area to realize continuous baking of the enameled wire 10. The waste gas treatment device includes a waste heat exchanger 1 and an exhaust fan 2, which decomposes organic pollutants by using the high-temperature combustion chamber 13 (waste gas residence time is greater than or equal to 2 seconds) and reduces energy consumption by preheating new air through waste heat recovery. The temperature control system monitors the temperature in real time through multiple temperature sensors (oven outlet, curing area, return hot air, inlet, etc.), dynamically adjusts the fuel supply and fan speed in combination with the PLC controller and PID algorithm, and ensures stable baking temperature. The oven is also provided with a fresh air and hot air mixing area 6 to optimize the hot air circulation efficiency. The whole system replaces electric heating with new energy fuel, recovers waste heat, decomposes organic matter by combustion and realizes automatic control, which solves the problems of energy replacement and waste gas treatment in enameled wire production.

[0032] The above embodiments are only part of the embodiments of the utility model, but not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

Claims

1. A new energy fuel-based enameling machine, comprising an oven, the oven comprising a curing zone, an evaporation zone, characterized in that: The oven is heated by a combustion device, and the oven is also connected with a waste gas treatment device and a temperature control system; the combustion device comprises a fuel control module (8), a fuel burner (17) and a high-temperature combustion chamber (13); the high-temperature combustion chamber (13) is located in the oven and communicates with a curing zone and an evaporation zone of the oven to form a main circulating air duct of the oven; the waste gas treatment device comprises an exhaust fan (2), and the exhaust fan (2) is arranged above the high-temperature combustion chamber (13) and communicates with the high-temperature combustion chamber (13); the temperature control system comprises a plurality of temperature measuring sensors arranged in the oven, and the plurality of temperature measuring sensors are connected with a PLC controller.

2. The new energy fuel based enameiing machine according to claim 1, characterized in that: The combustion device uses bio-blended fuel oil or liquid wax alcohol ether as fuel.

3. The new energy fuel based enameiing machine according to claim 2, characterized in that: The combustion device further comprises a burner combustion fan (3) which communicates with the high-temperature combustion chamber (13).

4. The new energy fuel based enameiing machine according to claim 3, characterized in that: A waste heat exchanger (1) is arranged between the high-temperature combustion chamber (13) and the exhaust fan (2), and the waste heat exchanger (1) is arranged above the high-temperature combustion chamber (13).

5. The new energy fuel based enameiing machine according to claim 1, characterized in that: The main circulating air duct of the oven is provided with a main circulating fan (4), and the main circulating fan (4) delivers high-temperature hot air from the high-temperature combustion chamber (13) to the curing zone and the evaporation zone of the oven to evaporate and cure the enameled wire (10).

6. The new energy fuel based enameiing machine according to claim 1, characterized in that: The plurality of temperature measuring sensors comprise an oven outlet temperature measuring sensor (11), a curing zone temperature measuring sensor (12), a backflow hot air temperature measuring sensor (14) and an oven inlet temperature measuring sensor (15).

7. The new energy fuel based enameiing machine according to claim 1, characterized in that: The main circulating air duct is provided with a hot air temperature measuring thermocouple (9) which is located above the oven outlet.

8. The new energy fuel based enameiing machine according to claim 1, characterized in that: The oven is further provided with a fresh air fan (7), and a fresh air and hot air mixing zone (6) is formed between the fresh air fan (7) and the main circulating fan (4).

9. The new energy fuel based enameiing machine according to claim 1, characterized in that: The combustion temperature of the high-temperature combustion chamber (13) is greater than or equal to 800 DEG C, and the residence time of the waste gas in the high-temperature combustion chamber (13) is greater than or equal to 2 seconds.

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