CN215404373U - Roller hearth type heating furnace inner roller - Google Patents
Roller hearth type heating furnace inner roller Download PDFInfo
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- CN215404373U CN215404373U CN202121018880.7U CN202121018880U CN215404373U CN 215404373 U CN215404373 U CN 215404373U CN 202121018880 U CN202121018880 U CN 202121018880U CN 215404373 U CN215404373 U CN 215404373U
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Abstract
The utility model discloses an inner roller of a roller hearth heating furnace, which comprises: the roll comprises a roll body, a roll sleeve, a shaft head, a roll collar and a roll core; the roller sleeve is coaxially fixed at two ends of the roller body, a first shaft head and a second shaft head are respectively coaxially fixed at two ends of the roller sleeve, and first vent holes are respectively formed in the outer side of the roller sleeve; the roller core is coaxially fixed in the inner cavity of the roller body, and the roller rings are respectively fixed on the peripheral surface of the roller body at intervals; the roller core by with the coaxial dead lever of roll body and vertical fixation are in a plurality of supporting disks on the dead lever constitute, the supporting disk with there is the clearance between the roll body, and is located the dead lever both ends the supporting disk with the roll body spot welding is fixed. The roller core is additionally arranged in the middle of the roller body of the roller in the furnace, so that the deformation influence caused by the stress bending of the roller body at high temperature is reduced, the probability of cracking of the roller body is effectively prevented, and the bending resistance of the roller body at high temperature is improved.
Description
Technical Field
The utility model relates to the technical field of heating furnace equipment, in particular to an inner roller of a roller-hearth heating furnace.
Background
At present, the existing heating furnaces in domestic markets are generally divided into a resistance type high-temperature heating furnace and a natural gas heating furnace, the furnace bottoms of the two heating furnaces are provided with a furnace roller way for conveying plates, raw materials such as plate blanks are heated to 850 ℃ to 1050 ℃ or so in a resistance wire heating or natural gas heating mode, the bending cracking or the cracking of an in-furnace roller are easily caused due to continuous high temperature in the using process, the in-furnace roller is stopped during severe operation, a large amount of energy is wasted, the time for replacing the in-furnace roller is long, the labor intensity is high, and the smooth production is seriously influenced. Therefore, in order to ensure the normal use of the heating furnace, extremely high requirements are made on the heat resistance and the high-temperature stress bending deformation performance of the roller in the furnace; the furnace inner roller of the roller-hearth heating furnace in the market has design defects, and the roller body of the furnace inner roller purchased by an applicant from a furnace inner roller manufacturer in the past adopts a layered heat-resistant steel design with different materials, so that layered cracking gradually occurs in the using process, and the smooth production is seriously influenced, therefore, the furnace inner roller of the roller-hearth heating furnace needs to be redesigned urgently to meet the actual production requirement.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides an inner roller of a roller hearth type heating furnace.
The technical problem to be solved by the utility model is realized by the following technical scheme:
an inner roll of a roll hearth heating furnace, comprising: the roll comprises a roll body, a roll sleeve, a shaft head, a roll collar and a roll core; the roller sleeve is coaxially fixed at two ends of the roller body, a first shaft head and a second shaft head are respectively coaxially fixed at two ends of the roller sleeve, and first vent holes are respectively formed in the outer side of the roller sleeve; the roller core is coaxially fixed in the inner cavity of the roller body, and the roller rings are respectively fixed on the peripheral surface of the roller body at intervals;
the roller core by with the coaxial dead lever of roll body and vertical fixation are in a plurality of supporting disks on the dead lever constitute, the supporting disk with there is the clearance between the roll body, and is located the dead lever both ends the supporting disk with the roll body spot welding is fixed.
Furthermore, check rings are arranged in inner cavities of the roller bodies on two sides of the roller core, the check rings are fixed on the inner end face of the roller sleeve, a gap exists between the check rings and the roller core, and a second vent hole is formed in the middle of each check ring.
Further, the clearance between the supporting disk and the roller body is 1-2 mm, and the clearance between the retainer ring and the roller core is 15-25 mm.
Furthermore, heat-resisting fibers are filled in the inner cavity of the roller sleeve between the retainer ring and the shaft head.
The utility model has the beneficial effects that:
1. the roller core is added in the middle of the roller body of the roller in the furnace, so that the deformation influence caused by the forced bending of the roller body at high temperature is greatly reduced;
2. the furnace inner roller has a simple structure, and through the arrangement of the vent holes, the heat in the furnace inner roller is effectively balanced, and the probability of deformation and weld cracking of the furnace inner roller is effectively reduced;
3. the existing layered design of the roller body is changed into the design of a single-layer material, the wall thickness of the roller body is thickened, the probability of cracking and deformation of the roller body is effectively prevented, and the bending resistance of the roller body at high temperature is improved.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the assembled structure of the roll core and roll body of the present invention;
fig. 3 is a schematic structural view of a portion a in fig. 1.
Description of reference numerals:
1-a roll body; 2-roller sleeve; 3-a shaft head; 4-a roll collar; 5-roll core; 6-a first vent; 7-a retainer ring; 8-heat resistant fibers; 9-a key groove; 3-1-a first spindle nose; 3-2-second spindle head; 5-1-fixing the rod; 5-2-support disk; 7-1-second vent.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1 to 3, the present invention discloses an inner roller of a roller hearth heating furnace, which specifically comprises: the roller comprises a roller body 1, a roller sleeve 2, a shaft head 3, a roller ring 4 and a roller core 5; the roller sleeve 2 is coaxially welded at two ends of the roller body 1, a first shaft head 3-1 and a second shaft head 3-2 are coaxially fixed at two ends of the roller sleeve 2 respectively, and first vent holes 6 are formed in the outer side of the roller sleeve 2 respectively; the gas expanded by heating in the roller in the furnace is discharged through the first vent hole 6; the first shaft head 3-1 and the second shaft head 3-2 respectively extend into the corresponding roller sleeve 2 and are welded with the roller sleeve 2, the first shaft head 3-1 is connected with a bearing, and the second shaft head 3-2 is connected with a speed reducer.
The roller core 5 is coaxially fixed in the inner cavity of the roller body 1, and the roller rings 4 are respectively fixed on the peripheral surface of the roller body 1 at intervals. The distance between the two roll collars 4 is the width of the material entering the furnace, and for design convenience, one roll collar 4 is generally welded to the outer circumferential surface of the end of the roll body 1 as a reference.
The roller core 5 consists of a fixed rod 5-1 coaxial with the roller body 1 and a plurality of supporting disks 5-2 vertically fixed on the fixed rod 5-1, and a gap exists between the supporting disks 5-2 and the roller body 1, and the gap value is 1-2 mm; and the supporting disc 5-2 positioned at the two ends of the fixed rod 5-1 is fixed with the roller body 1 by spot welding. The roller core 5 supports the roller body 1, so that the influence of bending deformation caused by uneven heating of the roller body 1 is reduced.
It should be noted that the number of the supporting disks 5-2 can be set according to specific use requirements, so that the two requirements that the supporting function of the roller body 1 is good and the weight of the roller in the whole furnace is not too heavy are met.
The heat-resistant fibers 8 mainly play a role in heat insulation, and avoid most of heat from being transmitted to the bearings and the speed reducers at the two ends of the shaft head 3 to cause the bearings and the speed reducers to be burnt out.
The first vent hole 6 on the roller sleeve 2, the second vent hole 7-1 in the middle of the retainer ring 7 and the gap between the supporting disk 5-2 in the roller core 5 and the roller body 1 are all used for dissipating the air expanded by heat inside the roller body 1 and the heat carried in the air, so that the phenomenon that the expanded air cannot be dissipated to cause serious deformation of the roller in the furnace is avoided, the heat balance inside the roller in the furnace is further balanced, the temperature of each part is approximately balanced and does not excessively expand and deform when the roller in the furnace is used, and the probability of bending deformation cracking is effectively reduced.
Furthermore, a key groove 9 is formed in the second shaft head 3-2, namely one side of the shaft head 3 connected with the speed reducer, the second shaft head 3-2 is connected with the speed reducer through the key groove 9, the second shaft head 3-2 is not easy to slip or even fall off from the speed reducer due to the connection mode, and serious consequences caused by uneven heating of the roller in the furnace are avoided.
The furnace roller is made of heat-resistant steel, and the specific material can be selected according to the use environment of the heating furnace.
The utility model improves the defects of the existing furnace inner roller, so that the bending and cracking of the roller are effectively reduced in the using process, wherein the roller sleeve and the retaining ring are respectively provided with the vent holes, the internal heat of the roller body and the roller sleeve can be effectively balanced, the deformation possibility of the roller body and the roller sleeve is reduced, and the probability of welding seam cracking is further reduced; meanwhile, the existing layered roller body structure is designed into a roller body made of a single-layer material, the wall thickness of the roller body is thickened, the cracking and burning phenomena of the roller body are effectively reduced, and the roller core is arranged in the inner cavity of the roller body, so that the bending deformation influence of the roller body caused by high temperature is greatly reduced; after 6000 hours of use tests, the roller in the furnace has good use state, is not easy to deform and break, and completely meets the production requirements.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (4)
1. The utility model provides a roller in roller hearth heating furnace stove which characterized in that includes: the roll comprises a roll body, a roll sleeve, a shaft head, a roll collar and a roll core; the roller sleeve is coaxially fixed at two ends of the roller body, a first shaft head and a second shaft head are respectively coaxially fixed at two ends of the roller sleeve, and first vent holes are respectively formed in the outer side of the roller sleeve; the roller core is coaxially fixed in the inner cavity of the roller body, and the roller rings are respectively fixed on the peripheral surface of the roller body at intervals;
the roller core by with the coaxial dead lever of roll body and vertical fixation are in a plurality of supporting disks on the dead lever constitute, the supporting disk with there is the clearance between the roll body, and is located the dead lever both ends the supporting disk with the roll body spot welding is fixed.
2. The roller hearth heating furnace inner roller according to claim 1, wherein retainer rings are arranged in inner cavities of roller bodies on two sides of the roller core, the retainer rings are fixed on the inner end surface of the roller sleeve, a gap is formed between the retainer rings and the roller core, and a second vent hole is formed in the middle of each retainer ring.
3. The roller hearth heating furnace inner roller according to claim 2, wherein a gap between the supporting disc and the roller body is 1-2 mm, and a gap between the retainer ring and the roller core is 15-25 mm.
4. The roller hearth heating furnace inner roller according to claim 3, wherein an inner cavity of the roller sleeve between the retainer ring and the shaft head is filled with heat-resistant fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121018880.7U CN215404373U (en) | 2021-05-13 | 2021-05-13 | Roller hearth type heating furnace inner roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121018880.7U CN215404373U (en) | 2021-05-13 | 2021-05-13 | Roller hearth type heating furnace inner roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215404373U true CN215404373U (en) | 2022-01-04 |
Family
ID=79675173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121018880.7U Active CN215404373U (en) | 2021-05-13 | 2021-05-13 | Roller hearth type heating furnace inner roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215404373U (en) |
-
2021
- 2021-05-13 CN CN202121018880.7U patent/CN215404373U/en active Active
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