CN103743219A - Hot air dryer system for drying steel plates - Google Patents
Hot air dryer system for drying steel plates Download PDFInfo
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- CN103743219A CN103743219A CN201310719630.XA CN201310719630A CN103743219A CN 103743219 A CN103743219 A CN 103743219A CN 201310719630 A CN201310719630 A CN 201310719630A CN 103743219 A CN103743219 A CN 103743219A
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- baking oven
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Abstract
The invention discloses a hot air dryer system for drying steel plates, wherein air is fed into a vapor heat exchanger through an air inlet and heated in the vapor heat exchanger, the heated air is transmitted to an oven for drying plates, and finally, the air is exhausted via the air outlet of the oven; the air inlet of a fan is connected with a first pipeline and a second pipeline, a first pneumatic proportional valve is arranged on the first pipeline and air is input through the first pneumatic proportional valve; the other end of the second pipeline is connected with the air outlet of the oven and a second pneumatic proportional valve is arranged on the second pipeline; a humidity transducer is arranged between the vapor heat exchanger and the oven, and the first pneumatic proportional valve and the second pneumatic proportional valve are controlled to work by a humidity signal measured by the humidity transducer; the recycled hot air and the introduction quantity of the air are controlled by virtue of the humidity signal measured by the humidity transducer, and therefore, the recycling of the dry hot air is realized on the basis that the drying effect of the hot air is ensured, and moreover, the utilization rate of heat is improved and the purpose of saving energy is achieved.
Description
Technical field
The present invention relates to a kind of air flow dryer system, specifically a kind of dried steel sheet air flow dryer system.
Background technology
The steel plate that Plate Production enterprise produces is generally all needing with air flow dryer drying plate face after pickling line, galvanized wire and color-coating line clean, blower fan extracts air at room temperature and enters preheating in vapor heat exchanger, preheated air (is steel plate spraying to wet steel band, long and form banded) heat is passed to steel band when surface, take away the wet steam of belt steel surface simultaneously, thereby make wet steel band dry.
Dryer system sprays hot blast need be heated to 1100～1200 ℃ from 200 ℃ of room temperatures, and this part jets of heated air is after drying belt steel surface, and all dissipation, causes great energy waste, and heat utilization ratio is not high.
In prior art, in stoving process section, some employing EGRs make hot air circulate utilization,, by this part lost gas is reclaimed, can realize energy-conservation.
But there is a problem in this: with the dry physical process of steel, be mass transfer, the diabatic process of belt steel surface water-gas system, and in this process, the evaporation of belt steel surface moisture, moisture content reduces, and temperature rises; Hot air temperature declines, and humidity increases (in air, carry and be evaporated moisture), and when hot-air humidity is increased to a certain degree, its drying effect will decline.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dried steel sheet air flow dryer system, and this system can realize recycling dry hot-air on the basis that guarantees hot air dries effect.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A kind of dried steel sheet air flow dryer system, comprise the motor-driven blower fan, vapor heat exchanger, temperature transmitter and the baking oven that by pipeline, connect successively, air heats in fan air inlet is sent to vapor heat exchanger, gas transport after heating in baking oven for drying plate face, final gas is discharged through baking oven gas outlet, described fan air inlet is connected with the first pipeline and second pipe, on described the first pipeline, is provided with the first pneumatic proportional valve, and air is inputted through the first pneumatic proportional valve; The other end of described second pipe is connected with baking oven gas outlet, is provided with the second pneumatic proportional valve on described second pipe; Between described vapor heat exchanger and baking oven, be provided with humidity transmitter, the moisture signal that described humidity transmitter is measured is controlled the first pneumatic proportional valve and the second pneumatic proportional valve work.
On described vapor heat exchanger, be provided with admission line and outlet pipe, be provided with control valve on admission line, between described vapor heat exchanger and baking oven, be provided with temperature transmitter, the temperature signal that described temperature transmitter is measured is controlled the work of control valve.
At place, described baking oven gas outlet, on described second pipe, be provided with filter, described filter is cotton paper filter.
The present invention is simple in structure, the moisture signal of measuring by humidity transmitter is controlled the intake of the hot-air of recycle and reuse and air, on the basis that guarantees hot air dries effect, realize recycling dry hot-air, improve the utilization rate of heat, realized energy-conservation object.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention.
The specific embodiment
As shown in Figure 1, dried steel sheet comprises blower fan 2, vapor heat exchanger 3, temperature transmitter 7, humidity transmitter 8 and the baking oven 9 of motor 1 driving connecting successively by pipeline by air flow dryer system, air is sent to the interior heating of vapor heat exchanger 3 through blower fan 2 air inlets.Blower fan 2 air inlets are connected with two pipelines, respectively: the first pipeline 10 and second pipe 11, the first pipeline 10 input air at room temperature are to blower fan 2 air inlets, and the hot-air that second pipe 11 is discharged baking oven 9 is collected input blower fan 2 air inlets.
On vapor heat exchanger 3, be provided with admission line 4 and outlet pipe 5, admission line 4, outlet pipe 5 are connected with import, the outlet of vapor heat exchanger 3 respectively, in admission line 4 or vapor heat exchanger 3 imports, control valve 6 is set, control valve 6 is for controlling the gas temperature that enters baking oven 9.
Between described vapor heat exchanger 3 and baking oven 9, be provided with temperature transmitter 7 and humidity transmitter 8.
The temperature signal that described temperature transmitter 7 is measured is controlled the work of control valve 6, for example thermometric take 130 ℃ control valve 6 is controlled as target, when the temperature recording when temperature transmitter reaches 130 ℃, the temperature signal recording is sent into PLC, after PLC processes, control the unlatching of control valve 6.Control valve 6 also can adoption rate valve.
Gas after heating in temperature transmitter 7 transfers to baking oven 9 for dry steel belt plate face, hot-air (is steel plate spraying to wet steel band, long and form banded) heat is passed to steel band when surface, take away the wet steam of belt steel surface simultaneously, thereby make wet steel band dry.Now with the hot-air (temperature declines) of certain humidity, from baking oven 9 gas outlets, discharge, enter in second pipe 11, the second pneumatic proportional valve 13 on second pipe 11 enters blower fan 2 air inlets, and air at room temperature enters blower fan 2 air inlets through the first pneumatic proportional valve 14 and the hot-air in second pipe 11.
Air in the pipeline at 8 pairs of humidity transmitter 8 places of humidity transmitter that arrange between vapor heat exchanger 3 and baking oven 9 carries out moisture measurement, and the signal recording is for controlling the first pneumatic proportional valve 14 and the second pneumatic proportional valve 13.The moisture signal recording can be sent into PLC particularly, after PLC processes, control the aperture of the first pneumatic proportional valve 14 and the second pneumatic proportional valve 13, control the ratio that passes into blower fan 2 interior damp-heat airs.
Like this, the amount that the first pipeline 10, the interior air of second pipe 11 enter the air inlet of blower fan is different, as, when humidity >=60% that humidity transmitter 8 records, the first pneumatic proportional valve 14 standard-sized sheets, the second pneumatic proportional valve 13 is closed, and allows corresponding air-flow to pass through; When humidity≤40% that humidity transmitter 8 records, the first pneumatic proportional valve 14 apertures, at 20%, the second pneumatic proportional valve 13 standard-sized sheets, allow corresponding air-flow to pass through, thereby can effectively control the humidity that passes into baking oven 9 interior hot-airs.
The hot-air of certain humidity enters baking oven 9 and dries after steel plate, through baking oven 9 gas outlets, is discharged to second pipe 11.At baking oven 9 places, gas outlet, on second pipe 11, be provided with filter 12 for filtering the impurity of hot-air, as filtered the zinc metal sheet coming off under hot-air impacts.At this, filter 12 can adopt cotton paper filter.
Above-described embodiment does not limit the present invention in any way, and every employing is equal to replaces or technical scheme that the mode of equivalent transformation obtains all drops in protection scope of the present invention.
Claims (4)
1. a dried steel sheet air flow dryer system, the blower fan (2) that comprises motor (1) driving connecting successively by pipeline, vapor heat exchanger (3) and baking oven (9), air is sent to heating in vapor heat exchanger (3) through blower fan (2) air inlet, gas transport after heating is interior for drying plate face to baking oven (9), final gas is discharged through baking oven (9) gas outlet, it is characterized in that: described blower fan (2) air inlet is connected with the first pipeline (10) and second pipe (11), on described the first pipeline (10), be provided with the first pneumatic proportional valve (14), air is inputted through the first pneumatic proportional valve (14), the other end of described second pipe (11) is connected with baking oven (9) gas outlet, is provided with the second pneumatic proportional valve (13) on described second pipe (11), between described vapor heat exchanger (3) and baking oven (9), be provided with humidity transmitter (8), the moisture signal that described humidity transmitter (8) is measured is controlled the first pneumatic proportional valve (14) and the second pneumatic proportional valve (13) work.
2. dried steel sheet according to claim 1 air flow dryer system, it is characterized in that: on described vapor heat exchanger (3), be provided with admission line (4) and outlet pipe (5), on admission line (4), be provided with control valve (6), between described vapor heat exchanger (3) and baking oven (9), be provided with temperature transmitter (7), the temperature signal that described temperature transmitter (7) is measured is controlled the work of control valve (6).
3. dried steel sheet according to claim 1 air flow dryer system, is characterized in that: at place, described baking oven (9) gas outlet, be provided with filter (12) on described second pipe (11).
4. dried steel sheet according to claim 1 air flow dryer system, is characterized in that: described filter (12) is cotton paper filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719630.XA CN103743219A (en) | 2013-12-24 | 2013-12-24 | Hot air dryer system for drying steel plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310719630.XA CN103743219A (en) | 2013-12-24 | 2013-12-24 | Hot air dryer system for drying steel plates |
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| Publication Number | Publication Date |
|---|---|
| CN103743219A true CN103743219A (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310719630.XA Pending CN103743219A (en) | 2013-12-24 | 2013-12-24 | Hot air dryer system for drying steel plates |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630691A (en) * | 2015-01-27 | 2015-05-20 | 中国石油化工股份有限公司 | Stainless steel surface oxidation treatment device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4344531A1 (en) * | 1993-12-24 | 1995-06-29 | Werner Strohmenger | Drying appts. for ceramic prods. |
| WO1997018425A1 (en) * | 1995-11-16 | 1997-05-22 | Antonello Boldrini | System and procedure for regulating air volume in ovens for painted automobiles |
| CN101726166A (en) * | 2009-12-07 | 2010-06-09 | 甘肃省机械科学研究院 | Steel belt type dryer |
| CN202485381U (en) * | 2012-03-09 | 2012-10-10 | 江苏万德环保科技有限公司 | SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system |
| CN202709687U (en) * | 2012-07-24 | 2013-01-30 | 南华大学 | Circulating heat recovery heat pump drying system |
| CN202915680U (en) * | 2012-11-30 | 2013-05-01 | 北新集团建材股份有限公司 | A paper-face plasterboard microwave drying system |
| CN203657412U (en) * | 2013-12-24 | 2014-06-18 | 烨辉（中国）科技材料有限公司 | Hot wind dryer system for drying steel sheets |
-
2013
- 2013-12-24 CN CN201310719630.XA patent/CN103743219A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4344531A1 (en) * | 1993-12-24 | 1995-06-29 | Werner Strohmenger | Drying appts. for ceramic prods. |
| WO1997018425A1 (en) * | 1995-11-16 | 1997-05-22 | Antonello Boldrini | System and procedure for regulating air volume in ovens for painted automobiles |
| CN101726166A (en) * | 2009-12-07 | 2010-06-09 | 甘肃省机械科学研究院 | Steel belt type dryer |
| CN202485381U (en) * | 2012-03-09 | 2012-10-10 | 江苏万德环保科技有限公司 | SCR (selective catalytic reduction) denitration catalyst one-step hot-air drying circulation system |
| CN202709687U (en) * | 2012-07-24 | 2013-01-30 | 南华大学 | Circulating heat recovery heat pump drying system |
| CN202915680U (en) * | 2012-11-30 | 2013-05-01 | 北新集团建材股份有限公司 | A paper-face plasterboard microwave drying system |
| CN203657412U (en) * | 2013-12-24 | 2014-06-18 | 烨辉（中国）科技材料有限公司 | Hot wind dryer system for drying steel sheets |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630691A (en) * | 2015-01-27 | 2015-05-20 | 中国石油化工股份有限公司 | Stainless steel surface oxidation treatment device |
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Application publication date: 20140423 |