CN109974455A - A kind of insulation construction of bottom discharge vacuum drying oven - Google Patents
A kind of insulation construction of bottom discharge vacuum drying oven Download PDFInfo
- Publication number
- CN109974455A CN109974455A CN201910239664.6A CN201910239664A CN109974455A CN 109974455 A CN109974455 A CN 109974455A CN 201910239664 A CN201910239664 A CN 201910239664A CN 109974455 A CN109974455 A CN 109974455A
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- Prior art keywords
- brick
- seat cushion
- insulation quilt
- heater
- material seat
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- Pending
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 157
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 238000001291 vacuum drying Methods 0.000 title claims abstract description 12
- 239000011449 brick Substances 0.000 claims abstract description 251
- 239000000463 material Substances 0.000 claims abstract description 133
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 43
- 229910052799 carbon Inorganic materials 0.000 claims description 30
- 229910002804 graphite Inorganic materials 0.000 claims description 13
- 239000010439 graphite Substances 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 206010037660 Pyrexia Diseases 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000007770 graphite material Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract description 5
- 241000826860 Trapezium Species 0.000 abstract description 4
- 238000013016 damping Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 210000003464 cuspid Anatomy 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/045—Bricks for lining cylindrical bodies, e.g. skids, tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Resistance Heating (AREA)
Abstract
A kind of insulation construction of bottom discharge vacuum drying oven, pad brick interval puts, expects that seat cushion brick insulation quilt and heater pad brick insulation quilt junction form canine tooth and staggeredly tie enough modes, and sealing thermal insulation effect is good, temperature is uniform.It is divided to material seat insulation quilt to two groups of placements, material seat cushion brick top insulation quilt diameter is less than material seat cushion brick lower part insulation quilt diameter, forms trapezium structure, it is engaged with heater pedestal insulation quilt gradient, damping is formed, the radiation of thermal field temperature can be effectively prevent, increases uniform temperature zone size.Material seat insulation quilt be divided to two groups to stack, above one group of insulation quilt diameter be less than following set insulation quilt diameter, formation trapezium structure.Two groups of insulation quilts of heater pedestal then stack into inverted trapezoidal, are intermeshed between insulation quilt gradient, form damping structure, and intercept heat radiation path effectively prevent scattering and disappearing for thermal field temperature, increases uniform temperature zone size.Technical measures adopted by the present invention effectively raise the uniformity of furnace temperature, improve product quality, eliminate security risk.
Description
Technical field
The present invention relates to a kind of vaccum sensitive stove bottom discharge furnace interior understructures.Especially for raising vacuum induction
The occasion of furnace base thermal insulation property.
Background technique
Vaccum sensitive stove is generally operational in several hundred between thousands of degree, and temperature uniformity is within ± 15 DEG C.Vacuum induction
Can furnace continuously operate normally at corresponding temperature, be critically depend on the intracorporal thermal insulation material of furnace and structure.Vaccum sensitive stove
Chamber structure is successively induction coil, insulation quilt, heater from outside to inside.When stove uses lower charging-discharging structure, truck chassis
On be material seat cushion brick, insulation quilt, insulation quilt and material seat cushion brick outer diameter equidimension, insulation quilt use laminated multi-layer form.In order into
Discharging is convenient, and material seat insulation quilt outer circle and heater pedestal insulation quilt inner circle have certain interval.Due to furnace body inherent structure, exist
The non-uniform problem of in-furnace temperature, generally, central temperature is higher than furnace inward flange temperature in furnace, and upper layer temperature is than under in furnace in furnace
Layer temperature is high, and expects that heat loss is caused in the gap between an insulation quilt and heater pedestal insulation quilt.Due to existing in furnace
The above-mentioned temperature difference causes effective warm area to shorten, and causes in furnace upper layer product than the high treating effect of lower layer product.If controlling furnace
Interior lower layer's temperature reaches technique and requires temperature it is necessary to increase heating power or extend soaking time, while again produces upper layer in furnace
Product excess temperature.Heater pads brick and material seat cushion brick uses alumina material, and in-furnace temperature radiation causes heater pad brick and material seat cushion
Brick temperature increases, and padding brick not is water-cooling structure, when carrying out the heat treatment of higher temperature, pad brick oxidation, high aluminium material occurs
Coloured glaze bulk is formed in scorification.Based on the shortcomings and deficiencies of above-mentioned understructure, once there is unit to burn in cleaning heater pad brick
Explode when coloured glaze block outstanding, about 1 ton of heavy upper bell pulls out the bolt fixed with furnace body, rush to it is high more than 2 meters and
House beam bumps against.There is punishment in advance seat cushion brick and burns stream, bonding together with heater pad brick in domestic colleague manufacturing enterprise, can not drop material
The phenomenon that disk feeding.
Patent document and paper database both domestic and external are retrieved, is not found and the immediate prior art of the present invention.
Summary of the invention
To overcome appearance existing in the prior art to pad brick oxidation, high aluminium material scorification and forming coloured glaze bulk and band
The deficiency for carrying out security risk, the invention proposes a kind of insulation constructions of bottom discharge vacuum drying oven.
The present invention includes material seat bottom plate, material seat cushion brick carbon felt, material seat cushion brick, heater bottom plate, insulation quilt, heater pad
Brick, graphite charging tray, heater and furnace body bottom plate；The insulation quilt is divided into heater pad brick lower part insulation quilt, heater pads on brick
Portion's insulation quilt, material seat cushion brick lower part insulation quilt, material seat cushion brick top insulation quilt and heater insulation quilt；The material seat cushion brick carbon felt
Place the upper surface of material seat bottom plate；Material seat cushion brick places the upper surface of the carbon felt；Material seat cushion brick lower part insulation quilt places the material seat
Pad the upper surface of brick；Material seat cushion brick top insulation quilt places the upper surface of the material seat cushion brick lower part insulation quilt；It is characterized by:
The diameter of material seat cushion brick top insulation quilt is smaller than the diameter of the material seat cushion brick lower part insulation quilt, between
Circumferential surface formed ladder；The material seat cushion brick top insulation quilt diameter difference unilateral with material seat cushion brick lower part insulation quilt diameter
For 15~20mm；
Expect the upper surface of the seat cushion brick uniform discharge carbon felt；Multiple heater pad bricks are located at the outer circle in the material seat cushion brick
All outsides, and be evenly spaced in the heater pad brick carbon felt；When some heater pad brick and some material seat cushion brick
When position is corresponding, there is the gap of 10mm between the intrados and the material seat cushion brick extrados of heater pad brick.The fever
The quantity that body pads brick is greater than the quantity of the material seat cushion brick.
The heater bottom plate is sleeved on the excircle of the material seat cushion brick, and the inner surface and material of the furnace body bottom plate
There is the gap of 10mm between the outer surface of seat cushion brick.
The heater pad brick carbon felt is sleeved on the excircle of the material seat cushion brick, and is placed in the heater bottom plate
On；There are the gap of 10mm in the inner surface of heater pad brick carbon felt and the outer surface of material seat cushion brick.
Heater pad brick is sleeved on the excircle of the material seat cushion brick, and is placed on the heater pad brick；The hair
There is the gap of 10mm between the inner surface of hot body pad brick and the outer surface for expecting seat cushion brick；Heater pad brick lower part insulation quilt is sleeved on
On the excircle of material seat cushion brick lower part insulation quilt, and it is placed in the heater pad brick；Heater pads brick lower part insulation quilt
Inner surface and expect seat cushion brick lower part insulation quilt outer surface between have the gap 10mm；Heater pad brick top insulation quilt is sleeved on
On the insulation quilt of the material seat cushion brick top, and it is placed in the heater pad brick lower part insulation quilt and material seat cushion brick lower part insulation quilt
Surface, heater pad brick lower part insulation quilt and expect seat cushion brick lower part insulation quilt between 10mm gap；The fever of sleeve-shaped
Body is placed in heater pad brick top insulation quilt upper surface；Graphite charging tray is located in heater and is placed on the material seat cushion brick
On portion's insulation quilt；Heater insulation quilt be sleeved on heater pad brick lower part insulation quilt, heater pad brick top insulation quilt and
The external peripheral surface of heater, and make the inner surface and heater pad brick lower part insulation quilt, fever of the heater insulation quilt
Body pads blind-mate between brick top insulation quilt and the external peripheral surface of heater.
The graphite charging tray and heater are all made of graphite material and are made；Graphite bulk density is greater than 1.62g/cm3, resistance to compression
Intensity is greater than 30MPa, and resistivity is 10 × 10-4Ω .cm, ash≤0.3%.
The heater pad brick has 14 pieces；It is cambered surface that each heater, which pads corresponding two sides of brick, is formed respectively each
Heater pads the inner surface and the outer surface of brick, keeps the shape of each heater pad brick fan-shaped；The interior table of each heater pad brick
The radius in face is identical as the radius of the material seat cushion brick, and the radius of the outer surface of each heater pad brick is less than furnace body furnace shell
Inside radius；Each heater pad brick is evenly arranged on furnace body plate upper surface.
The material seat cushion brick has 8 pieces.Each material seat cushion brick is the isosceles triangle that apex angle is equal to 15 °, and should
The bottom edge of isosceles triangle is cambered surface, forms space behind the upper surface that each material seat cushion brick is arranged in the material seat cushion brick carbon felt
It is round；The circular radius in the space of the formation is equal with the radius of the carbon felt.
In the present invention:
The material seat cushion brick is evenly spaced on material seat bottom plate, and has spacing between every two adjacent block seat cushion bricks.
The heater pad brick is evenly spaced on heater bottom plate, and is had per between adjacent two pieces of heaters pad brick
Spacing.
The material seat cushion brick insulation quilt is divided to two groups to be placed on material seat cushion brick, and two groups of insulation quilts are cylinder, above one group
Insulation quilt diameter is 30~40mm smaller than following set insulation quilt diameter, forms trapezium structure.
The heater pedestal insulation quilt is divided to two groups to be placed on heater pad brick, and two groups of insulation quilts are annulus shape, on
One group of face insulation quilt internal diameter is 30~40mm smaller than following set insulation quilt internal diameter, forms inverted trapezoidal structure.
The heater insulation quilt is wrapped in heater and heater pads brick upper and lower part insulation quilt periphery, from inside to outside often
Group height is gradually increased, and is formed gradient, is engaged with heater pedestal insulation quilt.
Expect seat cushion brick insulation quilt mode staggered with heater pad brick insulation quilt junction formation canine tooth.
Compared with prior art, the invention has the following advantages that
1, material seat insulation quilt be divided to two groups to stack, above one group of insulation quilt diameter it is smaller by 30 than following set insulation quilt diameter~
40mm forms trapezium structure.The heater pad upper and lower insulation quilt of brick then stacks into inverted trapezoidal, expects seat cushion brick insulation quilt and heater
The gradient intermeshing between brick insulation quilt is padded, forms damping structure, intercept heat radiation path effectively prevent thermal field temperature
It scatters and disappears, increases uniform temperature zone size；
2, material seat cushion brick uniform intervals are put, and per having gap between adjacent two pieces, vacuum are formed in heat treatment process, effectively
Ground prevents pad brick heat transfer；
3, heater pad brick uniform intervals are put, and per having gap between adjacent two pieces, are effectively prevented in heat treatment process
Pad brick heat transfer；
4, expect that seat cushion brick and heater pad brick insulating layer heat insulation effect are good, area's temperature, which is scattered and disappeared, under furnace body is reduced, samming in furnace
Area lengthens, and mentions high product through-put.
1 present invention of table power heating comparison same as the prior art
2 present invention of table temperature degree of graphitization comparison same as the prior art
Detailed description of the invention
Fig. 1 is traditional structure schematic diagram.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 is the arrangement schematic diagram for expecting seat cushion brick.
Fig. 4 is the arrangement schematic diagram of heater pad brick.
In figure:
1. material seat bottom plate；2. material seat cushion brick carbon felt；3. material seat cushion brick；4. heater bottom plate；5. heater pads brick carbon felt；6.
Heater pads brick；7. heater pads brick lower part insulation quilt；8. heater pads brick top insulation quilt；9. material seat cushion brick lower part is kept the temperature
Felt；10. material seat cushion brick top insulation quilt；11. graphite charging tray；12. heater；13. heater insulation quilt；14. material seat bottom plate is close
Seal；15. heater bottom plate sealing ring；16. furnace body bottom plate.
Specific embodiment
The present embodiment is a kind of insulation construction of bottom discharge vacuum drying oven, including material seat bottom plate 1, material seat cushion brick carbon felt 2, material seat
It is close to pad brick 3, heater bottom plate 4, heater pad brick carbon felt 5, heater pad brick 6, graphite charging tray 11, heater 12, material seat bottom plate
Seal 14, heater bottom plate sealing ring 15, furnace body bottom plate 16 and insulation quilt.The insulation quilt is divided into the brick lower part heat preservation of heater pad
Felt 7, heater pad brick top insulation quilt 8, material seat cushion brick lower part insulation quilt 9, material seat cushion brick top insulation quilt 10 and heater are protected
Warm felt 13.
The material seat cushion brick carbon felt 2 places the upper surface of material seat bottom plate 1.Expect 3 uniform discharge of the seat cushion brick material seat cushion brick carbon
The upper surface of felt, and make have spacing between adjacent material seat cushion brick, to form vacuum during heat treatment, it is effectively prevented this
Pad brick heat transfer.
The material seat cushion brick 3 has 8 pieces.Each material seat cushion brick is in isosceles triangle, and the bottom edge of the isosceles triangle
For cambered surface, space circle is formd behind the upper surface that each material seat cushion brick is arranged in the material seat cushion brick carbon felt 2；The formation
The circular radius in space is equal with the radius of the carbon felt.The apex angle of the isosceles triangle is 15 °.
The upper surface of the placement of the material seat cushion brick lower part insulation quilt 9 material seat cushion brick 3.Material seat cushion brick top insulation quilt
10 place the upper surface of the material seat cushion brick lower part insulation quilt 9；This states the diameter of material seat cushion brick top insulation quilt than the material seat cushion brick
The diameter of lower part insulation quilt is small, and circumferential surface between forms ladder；Material seat cushion brick top insulation quilt diameter with
Expect that insulation quilt diameter unilateral difference in seat cushion brick lower part is 15~20mm.The material seat cushion brick top insulation quilt and material seat cushion brick lower part
Step difference between insulation quilt forms damping structure, effectively prevent the radiation of thermal field temperature, increases uniform temperature zone size, avoids existing
There is thermal field temperature present in technology to distribute caused burner hearth along heater insulation quilt and the material inevitable gap of seat insulation quilt
The defect of interior bottom temp decline.
The heater bottom plate 4 is sleeved on the excircle of the material seat cushion brick carbon felt 2 and material seat cushion brick 3, and makes the hair
The lower surface of hot body bottom plate inner edge is bonded with the upper surface of the material seat bottom plate 1, and it is close to lay material seat bottom plate between
Seal 14.It is connected at the heater bottom plate outer rim with furnace body bottom plate 16, and lays heater between the mating surface of the two
Bottom plate sealing ring 15.There is the gap 10mm between the inner surface of the heater bottom plate 4 and the outer surface for expecting seat cushion brick 4.
Heater pad brick carbon felt 5 is sleeved on the excircle of the material seat cushion brick 3, and is placed in the heater bottom plate 4
On；There are the gap 10mm in the inner surface of the carbon felt and the outer surface of material seat cushion brick.
Multiple heater pad bricks are located on the outside of the excircle of the material seat cushion brick, and are evenly spaced in the heater pad
In brick carbon felt；When some heater pad brick is corresponding with the position of material seat cushion brick described in some, which pads the inner arc of brick
There is the gap of 10mm between face and the material seat cushion brick extrados.The quantity of the heater pad brick is greater than the number of the material seat cushion brick
Amount.
The heater pad brick 6 has 14 pieces.It is cambered surface that each heater, which pads corresponding two sides of brick, is formed respectively each
Heater pads the intrados and extrados of brick, keeps the shape of each heater pad brick fan-shaped.The outer arc of each heater pad brick
The radius in face is less than the inside radius of furnace body furnace shell.
Heater pad brick lower part insulation quilt 7 is sleeved on the excircle of material seat cushion brick lower part insulation quilt 9, and is placed in
The upper surface of the heater pad brick 6.The heater pads the inner surface of brick lower part insulation quilt 7 and expects seat cushion brick lower part insulation quilt
There is the gap 10mm between outer surface.
Heater pad brick top insulation quilt 8 is sleeved on material seat cushion brick top insulation quilt 10, and is placed in the hair
Hot body pad brick lower part insulation quilt 7 and the surface for expecting seat cushion brick lower part insulation quilt 9, to seal heater pad brick lower part insulation quilt and material
The gap 10mm between the insulation quilt of seat cushion brick lower part.
The heater 12 of sleeve-shaped is placed in heater pad 8 upper surface of brick top insulation quilt.Graphite charging tray 11 is located at the hair
In hot body 12 and it is placed on material seat cushion brick top insulation quilt 10.Heater insulation quilt 13 is wrapped in the heater pad brick
The external peripheral surface of lower part insulation quilt 7, heater pad brick top insulation quilt 8 and heater 12, and make the heater insulation quilt
The external peripheral surface of inner surface and heater pad brick lower part insulation quilt 7, heater pad brick top insulation quilt 8 and heater 12
Between blind-mate.
For the heater bottom plate sealing ring 15 in the seal groove of heater bottom plate 4, which passes through bolt
It is fixed with furnace body bottom plate 16.
The material seat bottom plate 1 is in sealing contact with heater bottom plate 4 by material seat bottom plate sealing ring 14.
The heater pad brick lower part insulation quilt 7, heater pad brick top insulation quilt 8, material 9 and of seat cushion brick lower part insulation quilt
Material seat cushion brick top insulation quilt 10 is all made of the soft carbon felt with a thickness of 10mm.
The material seat cushion brick 3 and heater pad brick 6 are all made of alumina brick.
The graphite charging tray 11 and heater 12 are all made of graphite material and are made.Graphite bulk density 1.62g/cm3More than,
Compression strength 30MPa or more, resistivity 10 × 10-4Ω .cm, ash≤0.3%.
Claims (7)
1. a kind of insulation construction of bottom discharge vacuum drying oven, including material seat bottom plate, material seat cushion brick carbon felt, material seat cushion brick, heater bottom
Plate, insulation quilt, heater pad brick, graphite charging tray, heater and furnace body bottom plate；The insulation quilt, which is divided into heater pad brick lower part, to be protected
Warm felt, heater pad brick top insulation quilt, material seat cushion brick lower part insulation quilt, material seat cushion brick top insulation quilt and heater heat preservation
Felt；The material seat cushion brick carbon felt places the upper surface of material seat bottom plate；Material seat cushion brick places the upper surface of the carbon felt；Expect under seat cushion brick
Portion's insulation quilt places the upper surface of the material seat cushion brick；Material seat cushion brick top insulation quilt places the upper of the material seat cushion brick lower part insulation quilt
Surface；It is characterized by:
The diameter of material seat cushion brick top insulation quilt is smaller than the diameter of the material seat cushion brick lower part insulation quilt, circle between
Perimeter surface forms ladder；The insulation quilt diameter difference unilateral with material seat cushion brick lower part insulation quilt diameter in the material seat cushion brick top is 15
~20mm；
Expect the upper surface of the seat cushion brick uniform discharge carbon felt；Multiple heater pad bricks are located at outside the excircle of the material seat cushion brick
Side, and be evenly spaced in the heater pad brick carbon felt；When the position of some heater pad brick and some material seat cushion brick
When corresponding, there is the gap of 10mm between the intrados and the material seat cushion brick extrados of heater pad brick；The heater pad
The quantity of brick is greater than the quantity of the material seat cushion brick.
2. the insulation construction of bottom discharge vacuum drying oven as described in claim 1, which is characterized in that the heater bottom plate is sleeved on institute
On the excircle for stating material seat cushion brick, and have between 10mm between the inner surface of the furnace body bottom plate and the outer surface for expecting seat cushion brick
Gap.
3. the insulation construction of bottom discharge vacuum drying oven as described in claim 1, which is characterized in that the heater pad brick carbon felt suit
On the excircle of the material seat cushion brick, and it is placed on the heater bottom plate；The heater pad brick carbon felt inner surface with
There is the gap of 10mm in the outer surface of material seat cushion brick.
4. the insulation construction of bottom discharge vacuum drying oven as described in claim 1, which is characterized in that heater pad brick is sleeved on the material
On the excircle of seat cushion brick, and it is placed on the heater pad brick；The heater pads the inner surface of brick and expects the outer of seat cushion brick
There is the gap of 10mm between surface；Heater pad brick lower part insulation quilt is sleeved on the excircle of material seat cushion brick lower part insulation quilt
On, and it is placed in the heater pad brick；Heater pads the inner surface of brick lower part insulation quilt and expects seat cushion brick lower part insulation quilt
There is the gap 10mm between outer surface；Heater pad brick top insulation quilt is sleeved on the insulation quilt of the material seat cushion brick top, and is pacified
Be placed on heater pad brick lower part insulation quilt and expect the surface of seat cushion brick lower part insulation quilt, heater pad brick lower part insulation quilt and
Expect the gap of the 10mm between the insulation quilt of seat cushion brick lower part；The heater of sleeve-shaped is placed on heater pad brick top insulation quilt
Surface；Graphite charging tray is located in heater and is placed on the insulation quilt of the material seat cushion brick top；Heater insulation quilt is sleeved on
The external peripheral surface of the heater pad brick lower part insulation quilt, heater pad brick top insulation quilt and heater, and make the fever
The outer circle of the inner surface of body insulation quilt and heater pad brick lower part insulation quilt, heater pad brick top insulation quilt and heater
Blind-mate between perimeter surface.
5. the insulation construction of bottom discharge vacuum drying oven as described in claim 1, which is characterized in that the graphite charging tray and heater are equal
It is made of graphite material；Graphite bulk density is greater than 1.62g/cm3, for compression strength greater than 30MPa, resistivity is 10 × 10-4
Ω .cm, ash≤0.3%.
6. the insulation construction of bottom discharge vacuum drying oven as described in claim 1, which is characterized in that the heater pad brick has 14 pieces；
It is cambered surface that each heater, which pads corresponding two sides of brick, forms respectively the inner surface and the outer surface of each heater pad brick, makes
The shape of each heater pad brick is fan-shaped；The radius phase of the radius and the material seat cushion brick of the inner surface of each heater pad brick
Together, the radius of the outer surface of each heater pad brick is less than the inside radius of furnace body furnace shell；Each heater pad brick is evenly arranged on
Furnace body plate upper surface.
7. the insulation construction of bottom discharge vacuum drying oven as described in claim 1, which is characterized in that the material seat cushion brick has 8 pieces；
Each material seat cushion brick is the isosceles triangle that apex angle is equal to 15 °, and the bottom edge of the isosceles triangle is cambered surface, when each material seat
Pad brick forms space circle after being arranged in the upper surface of the material seat cushion brick carbon felt；The circular radius in the space of the formation with
The radius of the carbon felt is equal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239664.6A CN109974455A (en) | 2019-03-27 | 2019-03-27 | A kind of insulation construction of bottom discharge vacuum drying oven |
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|---|---|---|---|
| CN201910239664.6A CN109974455A (en) | 2019-03-27 | 2019-03-27 | A kind of insulation construction of bottom discharge vacuum drying oven |
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|---|---|
| CN109974455A true CN109974455A (en) | 2019-07-05 |
Family
ID=67081113
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Application publication date: 20190705 |