CN86108728A - Continuous electric baking machine for daylight lamp - Google Patents
Continuous electric baking machine for daylight lamp Download PDFInfo
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- CN86108728A CN86108728A CN 86108728 CN86108728A CN86108728A CN 86108728 A CN86108728 A CN 86108728A CN 86108728 CN86108728 CN 86108728 CN 86108728 A CN86108728 A CN 86108728A CN 86108728 A CN86108728 A CN 86108728A
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Abstract
The present invention is the low pressure continuous electric baking machine for daylight lamp.Be applicable to the baking of fluorescent tube.The electric heating element that it is characterized in that main baking oven replaces conventional resistance wire or electrothermal tube with the tabular resistance board of large tracts of land, and with 17～24 volts low voltage power supply; Tabular resistance board open ground equably laterally or vertically is installed in the upper and lower inwall of burner hearth abreast, and the distance between electric heating element and the workpiece is short.Therefore, not only fire box temperature is even, and heat efficiency height, and the tabular electric heating element life-span is long, can reach more than 4 years, and ten thousand tubes power consumption are reduced to 1759 kilowatt-hours, obvious economic by 5517.
Description
The invention belongs to Equipment for Heating Processing.Mainly be applicable to the continuous baking of fluorescent tube.
Domestic fluorescent lamp manufacturing firm is a lot, and wherein 90% producer adopts coal gas tube-baking machine baking fluorescent tube.The shortcoming of this coal gas tube-baking machine is: strict especially to the requirement of coal gas, and contain in the coal gas of present domestic use and have the harmful element sulphur that has a strong impact on, a phosphorus etc. fluorescent tube light decay and light are logical, cause the fluorescent tube light decay of baking big, luminous flux is little.The fluorescent tube of being produced seldom reaches international electrical engineering standard (IEC), and broken pipe is many, and rate of finished products is below 80%.
At present, existing both at home and abroad with resistance wire or electrothermal tube electric tube-baking machine as electric heating element.Resistance wire or electrothermal tube are horizontally arranged in the furnace wall of main baking oven, and spacing is more than 200 millimeters; Supply power voltage is 380 volts.Its shortcoming is: (1) temperature inequality, and the easily roasting flat fluorescent tube of localized hyperthermia causes rate of finished products low, generally is lower than 85%; (2) the electric heating element life-span is short, general half a year, the longest 1 year; (3) programming rate is slow, generally needs 8 hours just can be raised to required temperature, so production efficiency is low; (4) because resistance wire or electrothermal tube are 380 volts of power supplies, and for safety, burner hearth is bigger, generally highly all more than 300 millimeters, and in the electric heating element installation furnace wall, the insulant shielding is arranged, the heat efficiency is low, and power consumption is big, about 5517 kilowatt-hours of per ten thousand tubes power consumptions.
The object of the present invention is to provide a kind of electric heating element life-span long, fire box temperature is even, the heat efficiency is high and power consumption is little, and can improve the roasting machine of fluorescent tube of product percent of pass and product quality.
The nucleus equipment of the roasting machine of fluorescent tube is main baking oven, and solution of the present invention just provides a kind of new main baking oven.
Main baking oven of the present invention is an electric heating element with the tabular resistance board of large tracts of land, powers with low-voltage and high-current.Tabular electric heating element open ground equably laterally or vertically is installed on the upper and lower inwall of burner hearth abreast, there is not the insulant shielding, spacing between the tabular electric heating element is very little, almost the inwall up and down of whole burner hearth all has been covered with electric heating element, like this, not only whole fire box temperature is even, and the heat efficiency is also high.Simultaneously, owing to adopt low voltage power supply, the spacing between electric heating element and the workpiece can be dwindled greatly, has both improved the heat efficiency, can dwindle size of burner hearth again, so that reduces the volume of whole main baking oven.
Description of drawings and embodiment
Accompanying drawing 1 is the board-like fluorescent tube of the low resistance schematic diagram of roasting machine continuously.
Accompanying drawing 2 is the sectional arrangement drawing of main baking oven.
Accompanying drawing 3 is tabular electric heating element schematic diagram.
Accompanying drawing 4 is tabular electric heating element drawing in side sectional elevation.
In accompanying drawing 1,1 is feeding platform, and 2 is printer, and 3 is feeding rack, and 4 are the preheating cover, and 5 is main baking oven, and 6 is soaking zone, and 7 is discharge rack, and 8 is speed control mechanism, and 9 is powdering machine, and 10 is check-out console.The center line of whole roasting machine becomes 7 ° of inclination angles with level.
The fluorescent tube that coats powder rolls into preheating cover 4 automatically by feeding platform 1, printer 2 and feeding rack 3.Preheating in the preheating cover, preheat temperature are about 300 ℃.By preheating, guarantee that fluorescent tube rationally heats up, reduce broken pipe, and saves energy.Fluorescent tube is incubated about the 2.5 minutes laggard baking ovens 5 of becoming owner of in the preheating cover.In main baking oven, fluorescent tube can be raised to 550～650 ℃ of required holding temperatures very soon, be incubated and enter soaking zone 6 after 5 minutes, in this section, lamp hole temperature is slowly reduced to about 100 ℃, comes out of the stove then, enter discharge rack 7, by speed control mechanism 8 and powdering machine 9, enter check-out console 10, after check, finish whole operation.
In accompanying drawing 2,11 is body of heater, and 12 is tabular electric heating element, and 13 is guide rail, and 14 is support.Size of burner hearth is 200 * 2000 * 2500 millimeters.Near the upper and lower inwall of burner hearth, each is (or vertically) 6 tabular electric heating elements of installation abreast laterally, and two of electric heating element is taken and is placed on the furnace wall, and promptly two respectively puts in a furnace wall part.In same row's electric heating element, the spacing between the electric heating element is 30 millimeters, and the distance between the two rows electric heating element is 170 millimeters.
Accompanying drawing 3 and accompanying drawing 4 are tabular electric heating element structure chart.Tabular electric heating element is I-shaped.Among two figure, the main board of 15 electric heating elements, 16 for paying plate.Main board is wide 200 millimeters, and long 2300～2800 millimeters, all there is the hole of using for wiring, garden at two.It is wide 50 millimeters to pay plate, long 2000～2500 millimeters.The thickness of main board and pair plate is 5 millimeters.Adopt between main board and pair plate and be welded to connect.
Tabular electric heating element adopts I-shape construction, is in order to improve its bending strength, to make it at high temperature still to keep straight, being unlikely to sagging.The electric heating element material can adopt heat resisting steel such as Ni25Cr20Si2.
The present invention adopts the low-voltage and high-current power supply.Upper and lower two row's electric heating elements are respectively by a transformer-supplied, and each adopts the three-phase Y-connection.Supply power voltage is 17～24 volts, and electric current is 2000～3000 peaces.
Main baking oven adopts daylight fluorescent tube of the present invention to bake continuously facility following significant effect:
1. thermal efficiency height, power consumption reduces greatly. Owing to adopt the tabular electric heating element of low pressure large tracts of land, can with 50 millimeter closely, directly the fluorescent tube vertical radiation be heated, thermal efficiency height, only be 1759 kilowatt-hours than traditional 30～40%, per ten thousand fluorescent tube bakings of electric heater economize on electricity power consumption, greatly saved electric energy.
2. the tabular electric heating element life-span is long. The electric heating element surface area is big, and the load on the per surface area is little. Load on the general resistance wire per surface area is at 1.5 watts/centimetre2More than, and the surface area of low resistance plate of the present invention load is less than 1.0 watts/centimetre2 The resistance board life-span can reach more than 4 years.
3. the production efficiency height can improve output. Take resistance wire or electrothermal tube as the main baking oven of electric heating element, rise to 650 ℃ of need 8 hours, the present invention only needs 2 hours.
4. because because of the low resistance utmost point replaces complicated electric heating element, so compact conformation, simple; Body of heater does not have the high pressure existence simultaneously, guarantees production safety, and is convenient to safeguard.
5. can improve the quality of fluorescent tube.Because the tabular electric heating element of upper and lower two rows almost is covered with whole burner hearth, the spacing between electric heating element and the processed fluorescent tube is little simultaneously, makes the interior heat supply of whole burner hearth even, no localized hyperthermia, the each point temperature difference is heated evenly fluorescent tube less than 5 ℃ in the stove, can adopt upper limit heat.Result, the fluorescent tube quality improves greatly, six technical indicators, three have surpassed international electrical engineering standard (IEC).Table 1 has been enumerated the contrast of six indexs of the present invention and ministry standard and international standard.
The contrast of six technical indicators of table 1 the present invention and ministerial standard and international standard (IEC)
Claims (8)
1, a kind of continuous electric baking machine for daylight lamp, comprise feeding platform, printer, feeding rack, preheating cover, main baking oven, soaking zone, discharge rack, speed control mechanism, powdering machine and check-out console, the electric heating element of main baking oven is resistance wire or electrothermal tube, it is characterized in that main baking oven with the tabular resistance board of large tracts of land as electric heating element.
2, electric baking machine according to claim 1 is characterized in that tabular electric heating element is an I-shape construction, promptly by main board with pay plate through being welded to form.
3, according to claim 1 and 2 described electric baking machines, it is characterized in that main board is wide 200 millimeters, long 2300～2800 millimeters, it is wide 50 millimeters to pay plate, and long 2000～2500 millimeters, the thickness of main board and pair plate is 5 millimeters.
4, according to claim 1 and 2 described electric baking machines, it is characterized in that tabular electric heating element equably open ground laterally or vertically be installed on the upper and lower inwall of burner hearth abreast, do not have insulant shielding.
5, electric baking machine according to claim 4 it is characterized in that in same row's electric heating element, the spacing between them is 30 millimeters, and the distance between the two rows electric heating element is 170 millimeters.
6, electric baking machine according to claim 1 is characterized in that the material of tabular electric heating element can adopt heat resisting steel such as Ni25Cr20Si2.
7, a kind of continuous electric baking machine for daylight lamp, the electric heating element of main baking oven adopts the baking process of 380 volts of power supplies, it is characterized in that electric heating element adopts the low-voltage and high-current power supply, upper and lower two row's electric heating elements respectively pass through a transformer-supplied, and respectively adopt the three-phase Y-connection.
8, the baking process of main baking oven according to claim 7, its feature is 17～24 volts at supply power voltage, electric current is 2000～3000 peaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198686108728A CN86108728B (en) | 1986-12-30 | 1986-12-30 | Continuous electric baking machine for daylight lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198686108728A CN86108728B (en) | 1986-12-30 | 1986-12-30 | Continuous electric baking machine for daylight lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86108728A true CN86108728A (en) | 1988-01-06 |
| CN86108728B CN86108728B (en) | 1988-02-24 |
Family
ID=4804031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198686108728A Expired CN86108728B (en) | 1986-12-30 | 1986-12-30 | Continuous electric baking machine for daylight lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86108728B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258699A (en) * | 2013-05-22 | 2013-08-21 | 浙江安吉成新照明电器有限公司 | Lamp tube tempering furnace |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6512206B1 (en) * | 2002-01-02 | 2003-01-28 | Mrl Industries | Continuous process furnace |
-
1986
- 1986-12-30 CN CN198686108728A patent/CN86108728B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258699A (en) * | 2013-05-22 | 2013-08-21 | 浙江安吉成新照明电器有限公司 | Lamp tube tempering furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86108728B (en) | 1988-02-24 |
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