CN104197719A - Water cooling maintenance cover plate for rotary hearth furnace - Google Patents
Water cooling maintenance cover plate for rotary hearth furnace Download PDFInfo
- Publication number
- CN104197719A CN104197719A CN201410505898.8A CN201410505898A CN104197719A CN 104197719 A CN104197719 A CN 104197719A CN 201410505898 A CN201410505898 A CN 201410505898A CN 104197719 A CN104197719 A CN 104197719A
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- rotary hearth
- hearth furnace
- water
- vertical portion
- access panel
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- Tunnel Furnaces (AREA)
Abstract
The invention relates to a water cooling maintenance cover plate for a rotary hearth furnace. The water cooling maintenance cover plate comprises a water cooling maintenance cover plate body, which adopts a reversed-U structure; cooling water is filled in the water cooling maintenance cover plate body; the rotary hearth furnace comprises a rotary hearth furnace bed and a rotary hearth furnace roof; a material discharge area is formed between the rotary hearth furnace bed and the rotary hearth furnace top; the material discharge area is filled with high-temperature coal gas; a spiral material discharge machine is arranged in the material discharge area; the water cooling maintenance cover plate body comprises a crossbeam part, a first vertical part and a second vertical part; the crossbeam part is fixed on the rotary hearth furnace roof; the first vertical part and the second vertical part are formed by extending downwards from the two ends of the crossbeam part; the length of the first vertical part is larger than the length of the second vertical part; metallic pellets enter the area where the spiral material discharge machine is located from the part under the second vertical part. The cooling water filled in the water cooling maintenance cover plate body can reduce the temperature in the material discharge area of the rotary hearth furnace; the water cooling maintenance cover plate body is additionally arranged to realize quick maintenance of the spiral material discharge machine.
Description
Technical field
The present invention relates to a kind of rotary hearth furnace water-cooled access panel, be applied on rotary hearth furnace.
Background technology
At present, rotary hearth furnace in process of production, need to utilize screw discharger by the metallized pellet 4(producing as accompanying drawing 1) discharge rotary hearth furnace.Metallized pellet 4 is positioned at rotary hearth furnace siege top, region between rotary hearth furnace siege 5 and rotary hearth furnace furnace roof 3 is coal gas of high temperature region 10, screw discharger is positioned under the coal gas environment of 1150 ℃ works, there is following problem: screw discharger is positioned at coal gas of high temperature region 10, under high temperature action, screw discharger Material Strength reduces, and causes screw discharger flexural deformation after operation a period of time; Rotary hearth furnace discharge region communicates with territory, rotary hearth furnace discharge region simultaneously, reduces rotary hearth furnace discharge regional temperature and also can reduce the temperature in territory, rotary hearth furnace discharge region, is unfavorable for the carrying out of reduction reaction.
Because screw discharger is positioned under worst hot case, device fails frequency is high again, and existing maintenance mode is unfavorable for screw discharger Quick overhaul.
Therefore be necessary to design a kind of rotary hearth furnace water-cooled access panel, to overcome the problems referred to above.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of rotary hearth furnace water-cooled access panel that carries out Quick overhaul is provided.
The present invention is achieved in that
The invention provides a kind of rotary hearth furnace water-cooled access panel, be installed on rotary hearth furnace, comprise a water-cooled access panel, described water-cooled access panel is inverted U-shaped structure, and its inside is provided with cooling water, described rotary hearth furnace comprises rotary hearth furnace siege and rotary hearth furnace furnace roof, between described rotary hearth furnace siege and described rotary hearth furnace furnace roof, form a discharge region, described discharge is full of coal gas of high temperature in region, and a screw discharger is positioned at described discharge region, and described rotary hearth furnace siege upper berth is provided with metallized pellet, described water-cooled access panel comprises a crossbeam portion, one first vertical portion and one second vertical portion, described crossbeam portion is fixed on described rotary hearth furnace furnace roof, described the first vertical portion and described the second vertical portion form to downward-extension from the two ends of described crossbeam portion respectively, and be all positioned at described discharge region, described screw discharger is between described the first vertical portion and described the second vertical portion, wherein, the length of described the first vertical portion is longer than described the second vertical portion, described metallized pellet enters the residing region of described screw discharger from the below of described the second vertical portion.
Further, described the first vertical portion and described the second vertical portion scribble heat-barrier material away from a side of described screw discharger.
Further, the bottom of described the first vertical portion and described the second vertical portion all scribbles high-abrasive material.
Further, in described crossbeam portion, described the first vertical portion and described the second vertical portion, be equipped with water cooled pipeline.
Further, two ends and the described rotary hearth furnace furnace roof of described crossbeam portion are bolted.
Further, described crossbeam portion is provided with sealing gasket with the position that described rotary hearth furnace furnace roof is connected.
The present invention has following beneficial effect:
Described water-cooled access panel inside is provided with the discharge regional temperature that cooling water can reduce rotary hearth furnace, sets up water-cooled access panel and can realize screw discharger is carried out to Quick overhaul.And the length of described first vertical portion of described water-cooled access panel is longer than described the second vertical portion, described metallized pellet enters the residing region of described screw discharger from the below of described the second vertical portion, also can reduce the convection current of coal gas of high temperature.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram in territory, existing rotary hearth furnace discharge region;
The structural representation of the rotary hearth furnace water-cooled access panel that Fig. 2 provides for the embodiment of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, all other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belong to the scope of protection of the invention.
As Fig. 2, the embodiment of the present invention provides a kind of rotary hearth furnace water-cooled access panel, is installed on rotary hearth furnace, comprises a water-cooled access panel 9, and described water-cooled access panel 9 is inverted U-shaped structure, and its inside is provided with cooling water.
As Fig. 2, described rotary hearth furnace comprises rotary hearth furnace siege 5 and rotary hearth furnace furnace roof 3, between described rotary hearth furnace siege 5 and described rotary hearth furnace furnace roof 3, form a discharge region 10, in described discharge region 10, be full of coal gas of high temperature, one screw discharger 6 is positioned at described discharge region 10, on described rotary hearth furnace siege 5, is equipped with metallized pellet 4.Raw material reacts in reduction reaction region and produces metallized pellet 4, and raw material or (metallized pellet 4) are along with rotary hearth furnace siege 5 rotates together to discharge region 10 simultaneously.
As Fig. 2, described water-cooled access panel 9 comprises a crossbeam portion 93, one first vertical portion 91 and one second vertical portion 92, is equipped with water cooled pipeline 8, for installing cooling water in described crossbeam portion 93, described the first vertical portion 91 and described the second vertical portion 92.Described crossbeam portion 93 is fixed on described rotary hearth furnace furnace roof 3, the two ends of described crossbeam portion 93 are connected by bolt 1 with described rotary hearth furnace furnace roof 3, the position that described crossbeam portion 93 is connected with described rotary hearth furnace furnace roof 3 is provided with sealing gasket 2, for the coal gas of high temperature in sealing discharging region 10.Described the first vertical portion 91 and described the second vertical portion 92 form to downward-extension from the two ends of described crossbeam portion 93 respectively, and being all positioned at described discharge region 10, described the first vertical portion 91, described crossbeam portion 93 and described the second vertical portion 92 form inverted U-shaped structure jointly.Described screw discharger 6 is between described the first vertical portion 91 and described the second vertical portion 92, wherein, the length of described the first vertical portion 91 is longer than described the second vertical portion 92, making described the first vertical portion 91 and described the second vertical portion 92 is dissymmetrical structure, and the residing height in the bottom of described the first vertical portion 91 is higher than the bottom of described the second vertical portion 92.Described metallized pellet 4 enters the residing region of described screw discharger 6 from the below of described the second vertical portion 92.In this preferred embodiment, described the first vertical portion 91 and described the second vertical portion 92 scribble heat-barrier material 7 away from a side of described screw discharger 6.The bottom of described the first vertical portion 91 and described the second vertical portion 92 all scribbles high-abrasive material 11.
As Fig. 2, the concrete application of described rotary hearth furnace water-cooled access panel is as follows:
The raw material of laying on rotary hearth furnace siege 5 reacts with coal gas of high temperature and generates metallized pellet 4 in 10 territories, discharge region, between rotary hearth furnace furnace roof 3 and rotary hearth furnace siege 5, need reserved enough height, coal gas of high temperature and air burn in this interval, produce the needed heat of raw material generation reduction reaction.Metallized pellet 4, along with rotary hearth furnace siege 5 rotates the discharge region to rotary hearth furnace, utilizes screw discharger 6 that metallized pellet 4 is discharged in rotary hearth furnace, and the temperature of metallized pellet 4 is 1150 ℃, is attended by the discharge region that coal gas of high temperature enters rotary hearth furnace simultaneously.Metallized pellet 4 forms heat radiation and heat conduction with coal gas of high temperature to screw discharger 6, and screw discharger 6 temperature raise.The water-cooled access panel 9 that is U-shaped structure in screw discharger 6 upper design, for screw discharger 6 is overhauled fast, simultaneously at the interior cooling water that arranges of water-cooled access panel 9 for cooling this water-cooled access panel 9, water-cooled access panel 9 arranges heat-barrier material 7 near furnace wall side external surface, utilize the heat radiation of the isolated coal gas of high temperature of heat-barrier material 7 to water-cooled access panel 9, reduce the temperature of water-cooled access panel 9.Water-cooled access panel 9 arranges water cooled pipeline 8 near screw discharger 6 sides, for cooling water-cooled access panel 9.The metallized pellet 4 supplied materials sides (that side that refers to 92 present positions, described the second vertical portion) of water-cooled access panel 9 are guaranteeing that with the height between rotary hearth furnace siege 5 metallized pellet 4 can reduce under the prerequisite along with action together with rotary hearth furnace siege 5 as much as possible, for isolated coal gas of high temperature, reduce the convection current of coal gas of high temperature.Height between water-cooled access panel 9 metallized pellet 4 exit sides (that side that refers to 91 present positions, described the first vertical portion) and rotary hearth furnace siege 5 is not affecting under the prerequisite of rotary hearth furnace siege 5 normal rotations, reduce as much as possible, for isolated coal gas of high temperature, reduce the convection current of coal gas of high temperature.In addition, between water-cooled access panel 9 and rotary hearth furnace furnace roof 3, adopt bolt 1 to be connected, centre arranges sealing gasket 2, for sealing coal gas.High-abrasive material 11 is established at the two ends of water-cooled access panel 9, and protection water-cooled access panel 9 is avoided and siege or metallized pellet 4 frictions.When screw discharger 6 need to overhaul, unclamp the bolt 1 between water-cooled access panel 9 and rotary hearth furnace furnace roof 3, utilize hanging device to leave water-cooled access panel 9 under order original position, then will revolve material discharging machine 6 from integral hoisting in rotary hearth furnace out, carry out repair and maintenance, or workman directly enters in discharge region, the material discharging machine 6 that revolves in rotary hearth furnace is overhauled.
Described rotary hearth furnace water-cooled access panel has following beneficial effect:
1. at the discharge region division water-cooled access panel 9 of rotary hearth furnace, the logical cooling water of water-cooled access panel 9, reduces discharge regional temperature, is convenient to the repair and maintenance of screw discharger 6 simultaneously.
2. water-cooled access panel 9 is designed to asymmetric U-shaped structure, maintenance water-cooled access panel 9 is the height that metallized pellet 4 is laid near the height of metallized pellet 4 supplied materials lateral extent furnace bottoms, reduces coal gas of high temperature convection current.
3. water-cooled access panel 9 is meeting rotary hearth furnace smoothly under the prerequisite of rotation near the height of metallized pellet 4 exit sides and furnace bottom, designs as much as possible lowly, reduces the convection current of coal gas of high temperature.
4. the asymmetric inverted U-shaped structure being designed to by water-cooled access panel 9, together screw discharger 6 is formed the encirclement space of a relative sealing with rotary hearth furnace siege 5, metallized pellet 4, the coal gas of high temperature that prevents rotary hearth furnace discharge region 10 enters this sealing area, by increasing cooling water, reduce the temperature of this sealing area simultaneously.
5., after the temperature of sealing area reduces, because coal gas convection current reduces, can reduce discharge regional temperature and reduce the impact on discharge region 10 temperature.
6. in the both sides of water-cooled access panel, heat-barrier material is set, reduces the heat radiation of coal gas of high temperature to water-cooling cover plate,
7. in water-cooled access panel bottom, high-abrasive material is set, keeps away water-cooled access panel and rotary hearth furnace siege or metallized pellet apart from too small, cause the wearing and tearing of water-cooled access panel, cooling water enters in rotary hearth furnace.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a rotary hearth furnace water-cooled access panel, is installed on rotary hearth furnace, it is characterized in that, comprises a water-cooled access panel, and described water-cooled access panel is inverted U-shaped structure, and its inside is provided with cooling water;
Described rotary hearth furnace comprises rotary hearth furnace siege and rotary hearth furnace furnace roof, between described rotary hearth furnace siege and described rotary hearth furnace furnace roof, form a discharge region, described discharge is full of coal gas of high temperature in region, and a screw discharger is positioned at described discharge region, and described rotary hearth furnace siege upper berth is provided with metallized pellet;
Described water-cooled access panel comprises a crossbeam portion, one first vertical portion and one second vertical portion, described crossbeam portion is fixed on described rotary hearth furnace furnace roof, described the first vertical portion and described the second vertical portion form to downward-extension from the two ends of described crossbeam portion respectively, and be all positioned at described discharge region, described screw discharger is between described the first vertical portion and described the second vertical portion, wherein, the length of described the first vertical portion is longer than described the second vertical portion, described metallized pellet enters the residing region of described screw discharger from the below of described the second vertical portion.
2. rotary hearth furnace water-cooled access panel as claimed in claim 1, is characterized in that: described the first vertical portion and described the second vertical portion scribble heat-barrier material away from a side of described screw discharger.
3. rotary hearth furnace water-cooled access panel as claimed in claim 1 or 2, is characterized in that: the bottom of described the first vertical portion and described the second vertical portion all scribbles high-abrasive material.
4. rotary hearth furnace water-cooled access panel as claimed in claim 1, is characterized in that: in described crossbeam portion, described the first vertical portion and described the second vertical portion, be equipped with water cooled pipeline.
5. rotary hearth furnace water-cooled access panel as claimed in claim 1, is characterized in that: two ends and the described rotary hearth furnace furnace roof of described crossbeam portion are bolted.
6. the rotary hearth furnace water-cooled access panel as described in claim 1 or 5, is characterized in that: described crossbeam portion is provided with sealing gasket with the position that described rotary hearth furnace furnace roof is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505898.8A CN104197719B (en) | 2014-09-28 | 2014-09-28 | Rotary hearth furnace water-cooled access panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505898.8A CN104197719B (en) | 2014-09-28 | 2014-09-28 | Rotary hearth furnace water-cooled access panel |
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| Publication Number | Publication Date |
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| CN104197719A true CN104197719A (en) | 2014-12-10 |
| CN104197719B CN104197719B (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410505898.8A Active CN104197719B (en) | 2014-09-28 | 2014-09-28 | Rotary hearth furnace water-cooled access panel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003106776A (en) * | 2001-09-27 | 2003-04-09 | Nippon Steel Corp | Discharge part structure of rotary hearth furnace |
| CN1527886A (en) * | 2001-08-31 | 2004-09-08 | 株式会社神户制钢所 | Production method of metal iron |
| CN101963449A (en) * | 2009-07-22 | 2011-02-02 | 吴道洪 | Double-layer ring-shaped rotary hearth furnace |
| CN203163487U (en) * | 2013-02-27 | 2013-08-28 | 中国有色（沈阳）冶金机械有限公司 | Discharge device for rotary hearth furnace |
| CN204187998U (en) * | 2014-09-28 | 2015-03-04 | 中冶南方工程技术有限公司 | Rotary hearth furnace water-cooled access panel |
-
2014
- 2014-09-28 CN CN201410505898.8A patent/CN104197719B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1527886A (en) * | 2001-08-31 | 2004-09-08 | 株式会社神户制钢所 | Production method of metal iron |
| JP2003106776A (en) * | 2001-09-27 | 2003-04-09 | Nippon Steel Corp | Discharge part structure of rotary hearth furnace |
| CN101963449A (en) * | 2009-07-22 | 2011-02-02 | 吴道洪 | Double-layer ring-shaped rotary hearth furnace |
| CN203163487U (en) * | 2013-02-27 | 2013-08-28 | 中国有色（沈阳）冶金机械有限公司 | Discharge device for rotary hearth furnace |
| CN204187998U (en) * | 2014-09-28 | 2015-03-04 | 中冶南方工程技术有限公司 | Rotary hearth furnace water-cooled access panel |
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| Publication number | Publication date |
|---|---|
| CN104197719B (en) | 2015-11-11 |
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