CN204187998U - Rotary hearth furnace water-cooled access panel - Google Patents
Rotary hearth furnace water-cooled access panel Download PDFInfo
- Publication number
- CN204187998U CN204187998U CN201420561595.3U CN201420561595U CN204187998U CN 204187998 U CN204187998 U CN 204187998U CN 201420561595 U CN201420561595 U CN 201420561595U CN 204187998 U CN204187998 U CN 204187998U
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- China
- Prior art keywords
- rotary hearth
- hearth furnace
- vertical portion
- water
- access panel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Tunnel Furnaces (AREA)
Abstract
The utility model relates to a kind of rotary hearth furnace water-cooled access panel, comprises a water-cooled access panel, and water-cooled access panel is inverted U-shaped structure, and its inside is provided with cooling water; Rotary hearth furnace comprises rotary hearth furnace siege and rotary hearth furnace furnace roof, forms a discharge zone, be full of coal gas of high temperature in discharge zone between rotary hearth furnace siege and rotary hearth furnace furnace roof, and a screw discharger is positioned at discharge zone; Water-cooled access panel comprises a crossbeam portion, one first vertical portion and one second vertical portion, crossbeam portion is fixed on rotary hearth furnace furnace roof, first vertical portion and the second vertical portion form to downward-extension from the two ends in crossbeam portion respectively, wherein, the length of the first vertical portion is longer than the second vertical portion, and metallized pellet enters the region residing for screw discharger from the below of the second vertical portion.Water-cooled access panel inside is provided with the discharge zone temperature that cooling water can reduce rotary hearth furnace, sets up water-cooled access panel and can realize carrying out Quick overhaul to screw discharger.
Description
Technical field
The utility model relates to a kind of rotary hearth furnace water-cooled access panel, is applied on rotary hearth furnace.
Background technology
At present, rotary hearth furnace in process of production, needs to utilize screw discharger by the metallized pellet 4(produced as accompanying drawing 1) discharge rotary hearth furnace.Metallized pellet 4 is positioned at above rotary hearth furnace siege, region between rotary hearth furnace siege 5 and rotary hearth furnace furnace roof 3 is coal gas of high temperature region 10, screw discharger works under being positioned at the coal gas environment of 1150 DEG C, there is following problem: screw discharger is positioned at coal gas of high temperature region 10, under high temperature action, screw discharger Material Strength reduce, cause screw discharger run a period of time after flexural deformation; Rotary hearth furnace discharge zone communicates with territory, rotary hearth furnace discharge zone simultaneously, reduces the temperature that rotary hearth furnace discharge zone temperature also can reduce territory, rotary hearth furnace discharge zone, is unfavorable for the carrying out of reduction reaction.
Again due under screw discharger is positioned at worst hot case, device fails frequency is high, 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.
Utility model content
The purpose of this utility model is the defect overcoming prior art, provides a kind of rotary hearth furnace water-cooled access panel carrying out Quick overhaul.
The utility model is achieved in that
The utility model provides a kind of rotary hearth furnace water-cooled access panel, is installed on rotary hearth furnace, 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, a discharge zone is formed between described rotary hearth furnace siege and described rotary hearth furnace furnace roof, be full of coal gas of high temperature in described discharge zone, a screw discharger is positioned at described discharge zone, 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 first vertical portion and described second vertical portion form to downward-extension from the two ends in described crossbeam portion respectively, and be all positioned at described discharge zone, described screw discharger is between described first vertical portion and described second vertical portion, wherein, the length of described first vertical portion is longer than described second vertical portion, described metallized pellet enters the region residing for described screw discharger from the below of described second vertical portion.
Further, described first vertical portion and described second vertical portion scribble heat-barrier material away from the side of described screw discharger.
Further, the bottom of described first vertical portion and described second vertical portion all scribbles high-abrasive material.
Further, water cooled pipeline is equipped with in described crossbeam portion, described first vertical portion and described second vertical portion.
Further, the two ends in described crossbeam portion and described rotary hearth furnace furnace roof are bolted.
Further, the position that described crossbeam portion is connected with described rotary hearth furnace furnace roof is provided with sealing gasket.
The utility model has following beneficial effect:
Described water-cooled access panel inside is provided with the discharge zone temperature that cooling water can reduce rotary hearth furnace, sets up water-cooled access panel and can realize carrying out Quick overhaul to screw discharger.And the length of described first vertical portion of described water-cooled access panel is longer than described second vertical portion, described metallized pellet enters the region residing for described screw discharger from the below of described 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 utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram in territory, existing rotary hearth furnace discharge zone;
The structural representation of the rotary hearth furnace water-cooled access panel that Fig. 2 provides for the utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
As Fig. 2, the utility model embodiment 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 in 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, a discharge zone 10 is formed between described rotary hearth furnace siege 5 and described rotary hearth furnace furnace roof 3, coal gas of high temperature is full of in described discharge zone 10, one screw discharger 6 is positioned at described discharge zone 10, and 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 simultaneously raw material or (metallized pellet 4) rotate to discharge zone 10 together along with rotary hearth furnace siege 5.
As Fig. 2, described water-cooled access panel 9 comprises vertical portion, crossbeam portion 93,1 first 91 and one second vertical portion 92, is equipped with water cooled pipeline 8, for installing cooling water in described crossbeam portion 93, described first vertical portion 91 and described second vertical portion 92.Described crossbeam portion 93 is fixed on described rotary hearth furnace furnace roof 3, the two ends in 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 first vertical portion 91 and described second vertical portion 92 form to downward-extension from the two ends in described crossbeam portion 93 respectively, and being all positioned at described discharge zone 10, described first vertical portion 91, described crossbeam portion 93 and described second vertical portion 92 form inverted U-shaped structure jointly.Described screw discharger 6 is between described first vertical portion 91 and described second vertical portion 92, wherein, the length of described first vertical portion 91 is longer than described second vertical portion 92, make described first vertical portion 91 and described second vertical portion 92 be dissymmetrical structure, namely the height residing for bottom of described first vertical portion 91 is higher than the bottom of described second vertical portion 92.Described metallized pellet 4 enters the region residing for described screw discharger 6 from the below of described second vertical portion 92.In this preferred embodiment, described first vertical portion 91 and described second vertical portion 92 scribble heat-barrier material 7 away from the side of described screw discharger 6.The bottom of described first vertical portion 91 and described second vertical portion 92 all scribbles high-abrasive material 11.
As Fig. 2, the embody rule of described rotary hearth furnace water-cooled access panel is as follows:
The raw material that rotary hearth furnace siege 5 is laid reacts with coal gas of high temperature and generates metallized pellet 4 in territory, discharge zone 10, reserved enough height are needed between rotary hearth furnace furnace roof 3 and rotary hearth furnace siege 5, coal gas of high temperature and air burn in this interval, produce the heat required for raw material generation reduction reaction.Metallized pellet 4 rotates the discharge zone to rotary hearth furnace along with rotary hearth furnace siege 5, utilizes screw discharger 6 to be discharged in rotary hearth furnace by metallized pellet 4, and the temperature of metallized pellet 4 is 1150 DEG C, is attended by the discharge zone that coal gas of high temperature enters rotary hearth furnace simultaneously.Metallized pellet 4 and coal gas of high temperature form heat radiation and heat transfer to screw discharger 6, and screw discharger 6 temperature raises.At the water-cooled access panel 9 of the U-shaped structure of screw discharger 6 upper design, for overhauling fast screw discharger 6, cooling water is set in water-cooled access panel 9 for cooling this water-cooled access panel 9 simultaneously, water-cooled access panel 9 arranges heat-barrier material 7 near furnace wall side external surface, utilize heat-barrier material 7 to completely cut off the heat radiation of coal gas of high temperature 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 side, for cooling water-cooled access panel 9.The metallized pellet 4 supplied materials side (referring to that side of described second present position, vertical portion 92) of water-cooled access panel 9 and the height between rotary hearth furnace siege 5 ensure metallized pellet 4 can along with the prerequisite of action together with rotary hearth furnace siege 5 under reduce 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 side (referring to that side of described first present position, vertical portion 91) and rotary hearth furnace siege 5 is not affecting under the normal prerequisite rotated of rotary hearth furnace siege 5, reduce as much as possible, for isolated coal gas of high temperature, reduce the convection current of coal gas of high temperature.In addition, adopt bolt 1 to be connected between water-cooled access panel 9 with rotary hearth furnace furnace roof 3, 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, avoids rubbing with siege or metallized pellet 4.When screw discharger 6 needs maintenance, unclamp the bolt 1 between water-cooled access panel 9 and rotary hearth furnace furnace roof 3, hanging device is utilized to leave water-cooled access panel 9 under order original position, then material discharging machine 6 will be revolved from integral hoisting in rotary hearth furnace out, carry out repair and maintenance, or workman directly enters in discharge zone, 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. arrange water-cooled access panel 9 in the discharge zone of rotary hearth furnace, water-cooled access panel 9 leads to cooling water, reduces discharge zone 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 bottom, reduces coal gas of high temperature convection current.
3. water-cooled access panel 9 is near the height of metallized pellet 4 exit side and furnace bottom meeting under the prerequisite that rotary hearth furnace rotates smoothly, designs low as much as possible, reduces the convection current of coal gas of high temperature.
4. by asymmetric inverted U-shaped structure that water-cooled access panel 9 is designed to, screw discharger 6 is formed to the encirclement space of an opposing seal together with rotary hearth furnace siege 5, metallized pellet 4, prevent the coal gas of high temperature of rotary hearth furnace discharge zone 10 from entering this sealing area, simultaneously by increasing cooling water, reduce the temperature of this sealing area.
5., after the temperature of sealing area reduces, because coal gas convection current reduces, the impact of discharge zone temperature reduction on discharge zone 10 temperature can be reduced.
6. heat-barrier material is set in the both sides of water-cooled access panel, reduces coal gas of high temperature to the heat radiation of water-cooling cover plate,
7. bottom water-cooled access panel, arrange high-abrasive material, keep away water-cooled access panel and rotary hearth furnace siege or metallized pellet apart from too small, cause water-cooled access panel to wear and tear, cooling water enters in rotary hearth furnace.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
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, a discharge zone is formed between described rotary hearth furnace siege and described rotary hearth furnace furnace roof, be full of coal gas of high temperature in described discharge zone, a screw discharger is positioned at described discharge zone, 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 first vertical portion and described second vertical portion form to downward-extension from the two ends in described crossbeam portion respectively, and be all positioned at described discharge zone, described screw discharger is between described first vertical portion and described second vertical portion, wherein, the length of described first vertical portion is longer than described second vertical portion, described metallized pellet enters the region residing for described screw discharger from the below of described second vertical portion.
2. rotary hearth furnace water-cooled access panel as claimed in claim 1, is characterized in that: described first vertical portion and described second vertical portion scribble heat-barrier material away from the 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 first vertical portion and described 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: be equipped with water cooled pipeline in described crossbeam portion, described first vertical portion and described second vertical portion.
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 in 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: the position that described crossbeam portion is connected with described rotary hearth furnace furnace roof is provided with sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420561595.3U CN204187998U (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 |
|---|---|---|---|
| CN201420561595.3U CN204187998U (en) | 2014-09-28 | 2014-09-28 | Rotary hearth furnace water-cooled access panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204187998U true CN204187998U (en) | 2015-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420561595.3U Withdrawn - After Issue CN204187998U (en) | 2014-09-28 | 2014-09-28 | Rotary hearth furnace water-cooled access panel |
Country Status (1)
| Country | Link |
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| CN (1) | CN204187998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197719A (en) * | 2014-09-28 | 2014-12-10 | 中冶南方工程技术有限公司 | Water cooling maintenance cover plate for rotary hearth furnace |
-
2014
- 2014-09-28 CN CN201420561595.3U patent/CN204187998U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197719A (en) * | 2014-09-28 | 2014-12-10 | 中冶南方工程技术有限公司 | Water cooling maintenance cover plate for rotary hearth furnace |
| CN104197719B (en) * | 2014-09-28 | 2015-11-11 | 中冶南方工程技术有限公司 | Rotary hearth furnace water-cooled access panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150304 Effective date of abandoning: 20151111 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150304 Effective date of abandoning: 20151111 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |