CN101797568A - Air knife of dust exhaust device for removing magnesium oxide dust in grain-oriented silicon steel production - Google Patents
Air knife of dust exhaust device for removing magnesium oxide dust in grain-oriented silicon steel production Download PDFInfo
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- CN101797568A CN101797568A CN200910215365A CN200910215365A CN101797568A CN 101797568 A CN101797568 A CN 101797568A CN 200910215365 A CN200910215365 A CN 200910215365A CN 200910215365 A CN200910215365 A CN 200910215365A CN 101797568 A CN101797568 A CN 101797568A
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Abstract
The invention relates to an air knife of a dust exhaust device for removing magnesium oxide dust in grain-oriented silicon steel production, which comprises a shell, an air blower and an air exhaust device, wherein the shell is a sealed cover of which a cover body is arranged on a grain-oriented silicon steel production line; the sealed cover is provided with an observation opening (7); an inlet and an outlet of the sealed cover are provided with rubber curtain doors for the exit and entrance of silicon strips; wearable retaining boards (8) which hold the silicon strips are arranged in the sealed cover; the two sides of the centre line of the sealed cover are provided with two pairs of blowpipes (9) respectively; each pair of blowpipes is provided with adjustable nozzles (2); and air exhaust nozzles (10) which remove and exhaust the magnesium oxide dust are arranged in the vicinity of jet points where airflows are jetted by the adjustable nozzles (2), and are arranged at the dust exhaust ends of a magnesium oxide dust removing system by connecting flexible rubber pipes. The device peels the magnesium oxide dust attached to the surfaces of silicon steel plates off under the action of the fanning of the high-pressure and high-speed airflows, and has the advantages of good application effect, high environmental-protection performance, high reliability and the like.
Description
Technical field
The present invention relates to orientation silicon steel produce in magnesia powder dust dedusting field, be specifically related to a kind of magnesia powder dust dedusting with air knife-take out dirt device.
Background technology
When orientation silicon steel carries out high temperature intermediate annealing at annular furnace, must adopt magnesia as interleaving agent.Stretch during annealing in process follow-up, must remove the magnesia powder dust dedusting again, present suitability for industrialized production all adopts wet type to scrub method.That is: in the silicon steel strip when the brushing and cleaning device, spray alkalescence is scrubbed liquid on strip, the brush roll by being arranged in band steel top and bottom brush effect, the magnesia powder dust dedusting is stripped to scrubs in the liquid liquid, drain by drainpipe.
This wet type is scrubbed method and is mainly had following defective:
1. because magnesia powder dust is a strongly hydrophilic, be very easy to condense into piece or group, together with the bristle that breaks away from blocking pipeline together.
2. facility load is big, scrubs quality for guaranteeing the silicon steel plate surface, and bristle must adopt soft material, and wearing and tearing easily must often be adjusted the brush roll height and change brush roll.Adjust to adopt and manually finish, regulate randomness greatly, the labour intensity height.
3. what is more important: the essence that wet type is scrubbed method is that the pollution to atmosphere with magnesia powder dust is transformed in the water, and the pollution of magnesia powder dust is more difficult in water.This is a kind of removal dust method of extremely not environmental protection.
Summary of the invention
Technical problem to be solved by this invention is: the air knife that the magnesia powder dust dedusting is used in a kind of orientation silicon steel production-take out dirt device is provided, this device acts on the magnesia powder dust dedusting of peeling off attached to the silicon steel plate surface by brushing of high pressure, high velocity air, is a kind of dust arrester of environmental protection.
The present invention solves its technical problem and adopts following technical scheme:
The air knife that the magnesia powder dust dedusting is used in the orientation silicon steel production provided by the invention-take out dirt device, comprise shell, blowing and exhausting parts, wherein: shell is an enclosed hood, whole enclosed hood cover body is installed on the orientation silicon steel production line, observation port is set on enclosed hood, inlet and exit at enclosed hood are provided with the rubber curtain door of coming in and going out and moving for silicon strip, be provided with the wear-resisting backing plate of holding silicon strip in enclosed hood inside, in the both sides of enclosed hood center line is that the both sides that silicon strip moves respectively are provided with two pairs of blowers, every pair of blower all is equipped with adjustable nozzle, be provided with the exhausting mouth that the magnesia powder dust dedusting is taken away near the spray site of adjustable nozzle ejection air-flow, this exhausting mouth is taken out the dirt end by what connect that rubber hose is installed in magnesia dedusting system.
The air knife that the magnesia powder dust dedusting is used in the above-mentioned orientation silicon steel production provided by the invention-take out the dirt device, it adopts the method that may further comprise the steps when being used for the dedusting of orientation silicon steel production magnesia powder dust:
Step 1: the pressure-air that provides by compressed air pipe network or high pressure blower imports from the high pressure air blowing pipe, observe working condition by observation port, regulate the A/F and the angle of the adjustable nozzle of two pairs of blowers, be ejected into the silicon strip upper and lower surface that is positioned at the enclosed hood centerline in mode, peel off magnesia powder dust dedusting on the silicon strip by the effect of blowing and hitting of air-flow to the angle of blowing and tilting;
Step 2: dust of being peeled off by high pressure draught and the dust laden air that evokes, taken away by the middle exhausting chamber of this exhaust column by the suction opeing of exhaust column again;
Step 3: the dust-contained airflow of being taken away enters the udst separation facility by pipe-line system, and the magnesia powder dust dedusting is separated, and cleaned air enters atmosphere.
The present invention compares with the wet type method of scrubbing has following main advantage:
1. the power that the silicon steel plate surface is applied is little, is unlikely to influence the sideslip or the broken belt of steel band.
2. almost do not have consumable part, labour intensity is low, reliability height, good economy performance.
3. environmental-protecting performance is good, and peel off the dust process of taking away and filter, after the collection dry dust, can be recycling after further handling.Even dry powder carry out the stock ground pile up after also polluted source not.
4. effect is good.Before adopting this device, the magnesia powder dust of orientation silicon steel steel strip surface is without any processing in early stage, and directly enters the dust brushing and cleaning device; After adopting this device, the magnesia powder dust average content of silicon steel steel strip surface is by 228mg/m
2Drop to 68mg/m
2(off-line sampled data), magnesia powder dust is removed efficient 50%～70%, and has greatly alleviated the pressure and the pollution level of subsequent handling.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the outline drawing of Fig. 1.
Among the figure: 1. high pressure air blowing pipe; 2. adjustable nozzle; 3. middle exhausting chamber; 4. suction opeing; 5. limit, gateway portion exhausting chamber; 6. circular suction opeing; 7. observation port; 8. wear-resisting backing plate; 9. blower; 10. exhausting mouth.
The specific embodiment
The device that can realize magnesia powder dust dust collection method in the orientation silicon steel production provided by the invention, it is a kind of magnesia dedusting air knife-take out dirt device, be installed on the production line, this device mainly is made up of shell, blowing and exhausting parts, concrete structure is as depicted in figs. 1 and 2: shell is an enclosed hood, on enclosed hood, establish observation port 7, be respectively equipped with the rubber curtain door of coming in and going out and moving for silicon strip at its inlet and outlet; Be equipped with wear-resisting backing plate 8 up and down in enclosed hood inside, can guarantee silicon strip current (seeing direction shown in the arrow among Fig. 1) smoothly.Be provided with two pairs of high speed, high pressure air blowing pipe fittings in the both sides of enclosed hood center line, they are respectively adjustable nozzle 2 and blower 9, and source of the gas can be provided by workshop compressed air or high pressure positive blower.Two pairs of blowers 9 spray high velocity air with the angle of 45～60 degree to the enclosed hood center line by its adjustable nozzle 2, peel off the magnesia powder dust dedusting on the silicon strip.Be provided with the exhausting mouth 10 that the magnesia powder dust dedusting is taken away near the spray site of adjustable nozzle 2 ejection air-flows, can be the very fast magnesia powder dust dedusting be taken away avoids it to be emitted in the air contaminated environment.Exhausting mouth 10 is taken out the dirt end by what connect that rubber hose is installed in magnesia dedusting system.
Described rubber curtain door, it is contained in the import and the outlet of enclosed hood by rivet and clamping plate.
Described high pressure air blowing pipe 1, it is contained on the channel-section steel bearing on the enclosed hood by the standard pipe collar.
Described adjustable nozzle 2, it is contained on the high pressure air blowing pipe 1 by welding, adjustable nozzle 2 is regulated bolt-nut-pad by two blocks of clip-on steel plates and M5x25 and is constituted, and regulates the gap of clip-on steel plate, the just gap of nozzle by bolt-nut-pad.
Exhausting chamber 3 in the middle of described, the cross section in exhausting chamber 3 welds together with enclosed hood for going up little tubaeform cavity down greatly.
Described suction opeing 4 is oval, and suction opeing 4 welds together with the horn mouth in exhausting chamber 3, by bolt-nut wear-resisting backing plate 8 is installed simultaneously below suction opeing 4.
Described gateway limit portion exhausting chamber 5, the cross section in exhausting chamber 5 little tubaeform cavity for down big, and to internal extended, it also welds together with enclosed hood with different its horn mouth in middle exhausting chamber 3.
Described wear-resisting backing plate 8 can be made by electrician's plate (phenolic cloth laminate GB JB/T8149.3-1995).Be installed in suction opeing 4, the downside of suction opeing 6.The protection silicon strip is not scratched.
Described two pairs of blowers 9, they are contained on the channel-section steel bearing on the enclosed hood by the standard pipe collar.When the enclosed hood center line sprayed the high speed and high pressure air-flow, its jet velocity was 50～70m/s at their adjustable nozzle 2, and expulsion pressure is 8～10kPa.
Described exhausting mouth 10 is total exhaust column, and its seal chamber by enclosed hood connects exhausting chamber 3 and exhausting chamber 5.
The air knife that the magnesia powder dust dedusting is used in the orientation silicon steel production provided by the invention-take out dirt device, its course of work is: referring to Fig. 1 and Fig. 2, the pressure-air that is provided by compressed air pipe network or high pressure blower imports from high pressure air blowing pipe 1, from adjustable nozzle 2 so that the mode of blowing is ejected into the silicon strip upper and lower surface, magnesia powder dust dedusting on the silicon strip is stripped from, evoked by air simultaneously, taken away by middle exhausting chamber 3 by oval suction opeing 4 again.Adopting oval suction opeing 4 is to block guide plate in the silicon strip crossing process.
The part air-flow can force to take part low amounts of dust to escape to import and outlet in addition, and the seizure of this part air-flow is finished by circular suction opeing 6 and limit, gateway portion exhausting chamber 5, does not cause secondary pollution in the surrounding air thereby can not be emitted to.
The magnesia powder dust dedusting air knife that produces in the orientation silicon steel production provided by the invention-take out the dirt device is to be used for peeling off magnesia powder dust dedusting attached to the silicon steel plate surface by brushing of high pressure, high velocity air, and the step of this method comprises:
Step 1: the pressure-air that provides by compressed air pipe network or high pressure blower imports from high pressure air blowing pipe 1, observe working condition by observation port 7, regulate two pairs of blowers 9 adjustable nozzle 2 A/F and with the angle of the angle of horizontal direction, to obtain best dust removing effects; Generally speaking, the A/F of adjustable nozzle 2 is 6～10mm, and the angle of adjustable nozzle 2 is to be 45 °～60 °.Adjustable nozzle 2 is ejected into the silicon strip upper and lower surface that is positioned at the enclosed hood centerline in the mode to the angle of blowing and tilting, and peels off magnesia powder dust dedusting on the silicon strip by the effect of blowing and hitting of air-flow.
Step 2: dust of being peeled off by high pressure draught and the dust laden air that evokes, taken away by middle exhausting chamber 3 by oval suction opeing 4 again.
Step 3: whole dust-contained airflows of being taken away enter the udst separation facility by pipe-line system, and the magnesia powder dust dedusting is separated, and cleaned air enters atmosphere.
Described udst separation facility comprises: deduster (air filtration facility), air exhauster, high-pressure air source (adopting high pressure blower or compressed air), intermediate conduit facility.
Claims (7)
1. the air knife that the magnesia powder dust dedusting is used in the orientation silicon steel production-take out dirt device, comprise shell, blowing and exhausting parts, it is characterized in that shell is an enclosed hood, whole enclosed hood cover body is installed on the orientation silicon steel production line, observation port (7) is set on enclosed hood, inlet and exit at enclosed hood are provided with the rubber curtain door of coming in and going out and moving for silicon strip, be provided with the wear-resisting backing plate (8) of holding silicon strip in enclosed hood inside, in the both sides of enclosed hood center line is that the both sides that silicon strip moves respectively are provided with two pairs of blowers (9), every pair of blower all is equipped with adjustable nozzle (2), be provided with the exhausting mouth (10) that the magnesia powder dust dedusting is taken away near the spray site of adjustable nozzle (2) ejection air-flow, this exhausting mouth is taken out the dirt end by what connect that rubber hose is installed in magnesia dedusting system.
2. air knife according to claim 1-take out the dirt device is characterized in that two pairs of blowers (9) spray high speed and high pressure air-flow with the angle of 45～60 degree to the enclosed hood center line by its adjustable nozzle (2).
3. air knife according to claim 2-take out the dirt device, it is characterized in that two pairs of blowers (9) by their adjustable nozzle (2) when the enclosed hood center line sprays the high speed and high pressure air-flow, its jet velocity is 50～70m/s, expulsion pressure is 8～10kPa.
4. the described air knife of arbitrary claim in the claim 1 to 3-take out the purposes of dirt device is characterized in that adopting the method that may further comprise the steps when being used for orientation silicon steel and producing the magnesia powder dust dedusting:
Step 1: the pressure-air that provides by compressed air pipe network or high pressure blower imports from high pressure air blowing pipe (1), observe working condition by observation port (7), regulate the A/F and the angle of the adjustable nozzle (2) of two pairs of blowers (9), be ejected into the silicon strip upper and lower surface that is positioned at the enclosed hood centerline in mode, peel off magnesia powder dust dedusting on the silicon strip by the effect of blowing and hitting of air-flow to the angle of blowing and tilting;
Step 2: dust of being peeled off by high pressure draught and the dust laden air that evokes, taken away by the middle exhausting chamber (3) of this exhaust column by the suction opeing (4) of exhaust column again;
Step 3: the dust-contained airflow of being taken away enters the udst separation facility by pipe-line system, and the magnesia powder dust dedusting is separated, and cleaned air enters atmosphere.
5. purposes according to claim 4, the A/F that it is characterized in that adjustable nozzle (2) is 6～10mm, adjustable nozzle (2) angle is 45 °～60 °.
6. purposes according to claim 4 is characterized in that suction opeing (4) is oval suction opeing.
7. purposes according to claim 4 is characterized in that in the exhaust column outside exhausting seal closure being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910215365A CN101797568A (en) | 2009-12-23 | 2009-12-23 | Air knife of dust exhaust device for removing magnesium oxide dust in grain-oriented silicon steel production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910215365A CN101797568A (en) | 2009-12-23 | 2009-12-23 | Air knife of dust exhaust device for removing magnesium oxide dust in grain-oriented silicon steel production |
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| Publication Number | Publication Date |
|---|---|
| CN101797568A true CN101797568A (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910215365A Pending CN101797568A (en) | 2009-12-23 | 2009-12-23 | Air knife of dust exhaust device for removing magnesium oxide dust in grain-oriented silicon steel production |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406544A (en) * | 2013-07-22 | 2013-11-27 | 西安理工大学 | Fully-sealed airflow cracking and automatic receiving integrated device |
| CN103801184A (en) * | 2014-03-04 | 2014-05-21 | 南京工业职业技术学院 | Synchronous planet-tracking liquid spraying and negative-pressure gas absorption device |
| CN105728340A (en) * | 2016-04-22 | 2016-07-06 | 安徽捷迅光电技术有限公司 | Color selecting machine with dual dust suction devices |
| CN110076144A (en) * | 2019-05-21 | 2019-08-02 | 哈尔滨鸿固环境工程有限公司 | A kind of bagged product surface dust cleaner |
| CN110899346A (en) * | 2019-11-18 | 2020-03-24 | 武汉钢铁有限公司 | Dust removal device for removing dust and adhesive on surface of steel belt and operation method |
-
2009
- 2009-12-23 CN CN200910215365A patent/CN101797568A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406544A (en) * | 2013-07-22 | 2013-11-27 | 西安理工大学 | Fully-sealed airflow cracking and automatic receiving integrated device |
| CN103406544B (en) * | 2013-07-22 | 2015-12-02 | 西安理工大学 | Hermetically sealed air-flow is drawn and is split and automatic material receiving integrated apparatus |
| CN103801184A (en) * | 2014-03-04 | 2014-05-21 | 南京工业职业技术学院 | Synchronous planet-tracking liquid spraying and negative-pressure gas absorption device |
| CN103801184B (en) * | 2014-03-04 | 2015-06-17 | 南京工业职业技术学院 | Synchronous planet-tracking liquid spraying and negative-pressure gas absorption device |
| CN105728340A (en) * | 2016-04-22 | 2016-07-06 | 安徽捷迅光电技术有限公司 | Color selecting machine with dual dust suction devices |
| CN110076144A (en) * | 2019-05-21 | 2019-08-02 | 哈尔滨鸿固环境工程有限公司 | A kind of bagged product surface dust cleaner |
| CN110899346A (en) * | 2019-11-18 | 2020-03-24 | 武汉钢铁有限公司 | Dust removal device for removing dust and adhesive on surface of steel belt and operation method |
| CN110899346B (en) * | 2019-11-18 | 2022-03-18 | 武汉钢铁有限公司 | Dust removal device for removing dust and adhesive on surface of steel belt and operation method |
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Application publication date: 20100811 |