CN201927431U - A device for baking enameled wire from the bottom with catalytic combustion heat energy - Google Patents

Abstract

The utility model provides an equipment that toasts enameled wire with catalytic combustion heat energy from bottom, the utility model discloses at first add a end oven in the bottom of main furnace body, utilize the heat radiation of oven to toast the enameled wire, rather than blow the enameled wire with the hot-blast circulation that contains particle, end oven and the hot-blast circulation toasts simultaneously from upper and lower two sides, has just accelerated the dry speed of enameled wire. Furthermore, the large amount of circulating hot air of the utility model is blown in from the back area, and in the back area, the enameled wire has a surface film, and is not easy to be eroded by the particles in the circulating hot air. Compared with the prior art, the utility model discloses owing to add end oven, through the test, the enameled wire baking speed is accelerated 12% on average, and economize on electricity increases 16%, and emission standard falls to 30mg/m³The quality of the enameled wire product is obviously improved.

Description

A device for baking enameled wire from the bottom with catalytic combustion heat energy

【Technical field】

The utility model relates to equipment for baking and drying enameled wire coated paint film, in particular to the enamelling machine equipment which utilizes the heat energy after catalytic combustion to replace electric energy heating, especially relates to the use of a hot air distribution chamber to rationally distribute the heat energy of catalytic combustion to each area of the furnace, while taking into account Enameled wire quality, and lower emission standards equipment.

【Background technique】

In the prior art, some enameled wire manufacturers research and develop energy-saving micro-wire enameled wire machine ovens. The catalytic combustion chamber in the waste gas recovery and utilization device is set at one end of the furnace curing area, and the gas from which the enameled wire solvent is evaporated passes through the catalytic combustion chamber. The hot air flow is generated, and the fresh air is preheated by the hot air flow and enters the furnace along the flow, so the energy-saving effect is not obvious.

For this reason, many manufacturers have carried out technical transformation on existing equipment one after another, and applied for several patents, for example: there is already a Chinese utility model patent No. Solution, the solution of this utility model: an energy-saving micro-wire enamelling machine oven, including a furnace and a waste gas recycling device, wherein the inlet of the waste gas recycling device is set at one end of the evaporation area of the furnace, and the outlet passes through a circulating fan, a wind distribution The road is connected to one end of the curing zone of the furnace.

Although this solution injects the hot air flow generated by waste gas recovery into the inner cavity of the furnace in reverse, the single inlet is far away from the evaporation area of the furnace, and electric heating tubes are still needed for heating in the evaporation area of the furnace. Therefore, the energy saving effect has not reached the ideal value.

Moreover, this scheme is only suitable for models with a small processing volume. If each equipment processes multiple enameled wires side by side at the same time, this equipment structure is not applicable.

Another example is the Chinese Utility Model Patent No. 03263874.4, which discloses a technical scheme called "Double-cycle Horizontal Enameller Oven". Injection, but it still does not solve the problem of reasonable heat distribution throughout the furnace, that is to say, there is no heat supply in the middle area of the furnace, and electric heating tubes are still needed for heating.

At the same time, this scheme does not carefully consider the quality of the enameled wire. That is to say, the evaporation area of the furnace when the enameled wire solvent is evaporated is the area where the enameled wire is most likely to be polluted by particles. The reference amount of circulating hot air should be considered compared with fresh hot air. The problem of size, and the problem of coverage interval.

Also, the plan does not address how to further reduce emission standards.

In order to overcome the deficiencies of the existing technology, the applicant has applied for a utility model patent of 200910105133.4 "A method and equipment for rationally distributing catalytic combustion heat energy in an enameling machine". The combustion heat energy is distributed to the front, middle and rear areas of the furnace, and the heat is reasonably distributed to each area, thereby speeding up the baking progress and increasing the production efficiency by 20%.

Due to the collection and secondary catalytic combustion of the exhaust gas trapped in the dead corner, and the repeated catalytic combustion of the circulating hot air, the emission standard is reduced to below 50mg/m ³ , which is much lower than the national standard of 120mg/m ³ .

This technology can save more than 30% of electric energy because the heating tube of the main furnace is stopped for more than one hour after the equipment starts to operate, and the heat energy of catalytic combustion is used instead.

But this technology still has deficiencies, that is: the lower half of the enameled wire is not heated enough, resulting in uneven heating of the whole enameled wire, and its physical form is not ideal.

In addition, due to the excessive catalytic combustion heat energy directly contacting the enameled wire, the particles contained in it will affect the smoothness of the enameled wire surface.

Also due to uneven heating, the enameled wire running speed cannot be further improved.

【Content of utility model】

In order to solve the defects and deficiencies still existing in the prior art, the utility model proposes a device for baking enameled wires from the bottom with catalytic combustion heat energy.

In order to ensure the quality of the enameled wire, this utility model adds a bottom oven at the bottom of the main furnace body, and uses the heat radiation of the oven to bake the enameled wire instead of blowing and drying the enameled wire with circulating hot air containing particles. Since the bottom oven is located under the enameled wire, The circulating hot air is baked from the top, so that the upper and lower sides are baked at the same time, which speeds up the drying speed of the enameled wire, and the large dose of circulating hot air of the utility model is blown in from the rear area, and in the rear area, the enameled wire has surface conjunctiva , not easily eroded by particles in circulating hot air.

In order to achieve the above object, the utility model realizes by adopting the following technical solutions:

Design and manufacture a device that bakes enameled wire from the bottom with catalytic combustion heat energy, including the main furnace body, hot air mixing chamber, circulation fan, heat exchanger, primary catalytic chamber and secondary catalytic chamber, especially:

At the bottom of the main furnace body, a bottom oven is arranged close to the main furnace heating pipe, the bottom oven inlet of the bottom oven is located in the middle of the main furnace body, and the bottom oven outlet is arranged at the front end close to the main furnace body;

The inlet of the bottom oven communicates with the hot air mixing chamber through the bottom air duct.

The outlet of the bottom oven communicates with a return air passage, the end of the return air passage communicates with the second outlet pipe of the primary catalytic chamber, and the end of the second outlet pipe connects with the secondary catalytic chamber.

The proportions of the hot air in the hot air distribution chamber, the hot air at the bottom of the cycle, the hot air after the cycle, and the hot air before the cycle are respectively 8-18%, 28-40%, 35-45%, and 5-15%. The air duct is sent to the primary catalytic chamber.

The outlet of the bottom oven is arranged close to the front end of the main furnace body, with a distance of 100 mm to 300 mm.

Air volume regulating valves are all arranged in the air inlets of the rear air duct, the middle air duct, the front air duct and the bottom air duct in the hot air mixing chamber.

Compared with the technology of the utility model patent of 200910105133.4 "A method and equipment for rationally distributing catalytic combustion heat energy in enamelling machine", this utility model has added a bottom oven, after testing, the enameled wire baking speed is increased by 12% on average, and the power saving is increased by 16% %, the emission standard is reduced to below 30mg/m ³ , and the quality of enameled wire products is improved.

【Description of drawings】

Fig. 1 is a schematic block diagram of the method and equipment for baking enameled wire from the bottom with catalytic combustion heat energy of the present invention.

Label among the figure: 1 enameled wire.

10 main furnace body, 11 front furnace area, 12 middle furnace area, 13 rear furnace area, 15 main furnace heating tube, 16 furnace exit.

20 primary catalytic chamber, 21 organic waste gas inlet.

30 circulation fans, 26 second outlet pipes, 28 primary catalytic heating walls.

40 hot air distribution room, 41 front air duct, 42 middle air duct, 43 rear air duct, 45 bottom air duct.

46 return air duct, 421 middle hot air nozzle, 431 rear hot air nozzle.

50 heat exchangers, 51 new hot air passages, 52 new hot air, 511 new hot air nozzles.

521 front area organic waste gas, 57 heat exchange wall, 58 heating wall, 59 fresh air.

60 waste gas collection chamber, 61 waste gas pipe, 65 waste gas regulating valve.

70 Secondary Catalytic Chamber, 90 Thermal Energy Comprehensive Utilization Department.

120 bottom oven, 121 bottom oven inlet, 122 bottom hot plate, 123 bottom oven outlet.

【Detailed ways】

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

The preferred embodiment is shown in Figure 1.

Design and manufacture a device for baking enameled wire from the bottom with catalytic combustion heat energy, including main furnace body 10, hot air mixing chamber 40, circulation fan 30, heat exchanger 50, primary catalytic chamber 20 and secondary catalytic chamber 70, especially:

At the bottom of the main furnace body 10, a bottom oven 120 is arranged close to the main furnace heating pipe 15, the bottom oven inlet 121 of the bottom oven 120 is located in the middle of the main furnace body 10, and the bottom oven outlet 123 is arranged at the front end close to the main furnace body 10 department;

The inlet 121 of the bottom oven communicates with the hot air preparation chamber 40 through the bottom air channel 45 .

The bottom oven outlet 123 communicates with a return air duct 46 , the end of the return air duct 46 communicates with the second outlet pipe 26 of the primary catalytic chamber 20 , and the end of the second outlet pipe 26 connects with the secondary catalytic chamber 70 .

The hot air distribution chamber 40 distributes the hot air in circulation, the bottom hot air in circulation, the hot air after circulation, and the hot air before circulation in proportions of 8-18%, 28-40%, 35-45%, and 5-15%, respectively. The front air duct 41 is sent to the primary catalytic chamber 20 .

The outlet 123 of the bottom oven is arranged close to the front end of the main furnace body 10 with a distance of 100 mm to 300 mm.

The air volume regulating valves in the air inlets of the rear air passage 43 , the middle air passage 42 , the front air passage 41 and the bottom air passage 45 of the hot air mixing chamber 40 are all provided with.

In the above method, the hot air preparation chamber 40 also distributes heated hot air to the primary catalytic chamber 20 to mix with the organic waste gas to increase the temperature of the organic waste gas so that the organic waste gas can be fully catalytically combusted.

The tail gas discharged from the outlet of the heat exchanger 50 enters the secondary catalytic chamber 70 for secondary catalytic combustion;

A waste gas collection chamber 60 is provided between the rear hot air nozzle 431 and the furnace outlet 16, and after the waste gas is collected, secondary catalytic combustion is performed.

The working principle of the utility model is:

First, at the bottom of the main furnace body 10, a bottom oven 120 is arranged close to the main furnace heating pipe 15, the bottom oven inlet 121 of the bottom oven 120 is located in the middle of the main furnace body 10, and the bottom oven outlet 123 is close to the front end of the main furnace body 10 The bottom oven inlet 121 is communicated with the hot air distribution chamber 40 through the bottom air duct 45; after the catalytic combustion heat energy reaches a normal cycle, the main furnace heating pipe 15 is completely or partially powered off;

Then, the circulation fan 30 sends the catalytically combusted circulating hot air into the hot air preparation chamber 40;

Next, the circulating hot air is distributed in the hot air distribution chamber 40, and the circulating hot air is sent to the middle furnace area 12 of the main furnace body 10 through the middle air channel 42, and the circulating bottom hot air is sent to the bottom oven 120 through the bottom air channel 45, and the circulating hot air passes through The rear air duct 43 is sent to the rear furnace area 13 of the main furnace body 10 .

At this time, in the rear furnace area 13, the rear hot air nozzle 431 has an angle of 30 to 60 degrees with the enameled wire 1, and the circulating hot air jetted obliquely forward enters the rear furnace area 13 to bake the enameled wire 1 and generate a small amount of Organic waste gas, mixed with the hot air after circulation, runs forward, and at the same time performs post-drying on the enameled wire;

In the middle furnace area 12, the circulating hot air ejected from the middle hot air nozzle 421 bakes the enameled wire 1 in a semi-dry state, and produces a small amount of organic waste gas, which is mixed with the circulating hot air and the wind from the rear furnace area 13 to form Organic waste gas in the central area, continue to move forward;

Next, the organic waste gas in the central area moves towards the organic waste gas inlet 21, and enters the primary catalytic chamber 20 together with the organic waste gas 521 in the front area;

Next, the organic waste gas is catalytically combusted in the primary catalytic chamber 20 to form circulating hot air for another cycle.

Simultaneously in the bottom oven 120, after the circulation bottom hot air enters the bottom oven 120, the bottom heat plate 122 is a metal plate with good heat conduction and radiant heat energy, and the enameled wires in the middle furnace area 12 and the front furnace area 11 are baked from the bottom up to make the enameled wires The surrounding body is heated to accelerate drying and solidification to form a film on the surface, and generate most of the organic waste gas in this area, forming the organic waste gas 521 in the front area, which enters the primary catalytic chamber 20;

Next, the organic waste gas is catalytically combusted in the primary catalytic chamber to form circulating hot air for another cycle.

In summary, the utility model adds a bottom oven at the bottom of the main furnace body, and uses the heat radiation of the oven to bake the enameled wire instead of blowing and drying the enameled wire with circulating hot air containing particles. Since the bottom oven is located below the enameled wire, The circulating hot air is baked from the top, so that the upper and lower sides are baked at the same time, which speeds up the drying speed of the enameled wire, and the large dose of circulating hot air of the utility model is blown in from the rear area, and in the rear area, the enameled wire has surface conjunctiva , not easily eroded by particles in circulating hot air.

Compared with the technology of the utility model patent of 200910105133.4 "A method and equipment for rationally distributing catalytic combustion heat energy in enamelling machine", this utility model has added a bottom oven, after testing, the enameled wire baking speed is increased by 12% on average, and the power saving is increased by 16% %, the emission standard is reduced to below 30mg/m ³ , and the quality of enameled wire products is improved.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (4)

1. one kind with the equipment of catalytic combustion thermal energy from bottom Baking Paint envelope curve, comprises main furnace body (10), hot air mixing chamber (40), circulating fan (30), heat exchanger (50) and primary catalyst chamber (20) and quadric catalysis chamber (70); It is characterized in that:

In main furnace body (10) bottom, near main stove heating tube (15) end baking oven (120) is set, the end baking oven inlet (121) of end baking oven (120) is positioned at the middle part of main furnace body (10), end baking oven outlet (123) is arranged on the leading section near main furnace body (10);

End baking oven inlet (121) is communicated with hot air mixing chamber (40) by air channel, the end (45).

2. according to claim 1 with the equipment of catalytic combustion thermal energy from bottom Baking Paint envelope curve, it is characterized in that:

Baking oven outlet of the described end (123) is communicated with an air-return duct (46), and the end of air-return duct (46) is communicated with second outlet (26) of primary catalyst chamber (20), and the termination of second outlet (26) connects quadric catalysis chamber (70).

3. according to claim 1 with the equipment of catalytic combustion thermal energy from bottom Baking Paint envelope curve, it is characterized in that:

Baking oven outlet of the described end (123) is arranged on the leading section near main furnace body (10), and its distance is 100 millimeters～300 millimeters.

4. according to claim 1 with the equipment of catalytic combustion thermal energy from bottom Baking Paint envelope curve, it is characterized in that:

Described hot air mixing chamber (40) all is provided with the volume damper door at the air inlet of air channel (43), back, middle air channel (42), primary air separating duct (41), air channel, the end (45).

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