CN110145938B - Multi-layer assembled electric furnace hearth - Google Patents
Multi-layer assembled electric furnace hearth Download PDFInfo
- Publication number
- CN110145938B CN110145938B CN201910498302.9A CN201910498302A CN110145938B CN 110145938 B CN110145938 B CN 110145938B CN 201910498302 A CN201910498302 A CN 201910498302A CN 110145938 B CN110145938 B CN 110145938B
- Authority
- CN
- China
- Prior art keywords
- furnace
- wall
- thermal expansion
- hearth
- furnace wall
- Prior art date
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 10
- 230000008646 thermal stress Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002912 waste gas Substances 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 239000011094 fiberboard Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/02—Furnaces of a kind not covered by any preceding group specially designed for laboratory use
-
- 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
- F27D1/0043—Floors, hearths
Abstract
The invention discloses a multi-layer assembled electric furnace hearth, which comprises an annular furnace wall (2), and a furnace cover (1) and a furnace bottom (3) which are respectively positioned on the upper side and the lower side of the furnace wall (2), wherein at least one thermal expansion joint (21) and at least one exhaust hole (22) are arranged on the furnace wall (2), the thermal expansion joint (21) and the exhaust hole (22) penetrate through the furnace wall (2) along the height direction of the furnace wall (2), and the thermal expansion joint (21) extends from the inner wall of the furnace wall (2) to the outer wall direction to the exhaust hole (22). On one hand, the electric furnace hearth meets the requirement of thermal expansion of the inner circle of the middle furnace wall positioned in a high temperature area in the heating process of the hearth, and ensures that thermal stress is effectively released; on the other hand, the waste gas in the hearth can be smoothly discharged through the thermal expansion joint and the exhaust hole communicated with the thermal expansion joint; and radial heat radiation and heat conduction of the hearth can be prevented, and the energy-saving effect of the hearth is improved.
Description
Technical Field
The invention relates to the technical field of electric furnace manufacturing, in particular to a multi-layer assembled electric furnace hearth which is used for an experimental electric furnace.
Background
The experimental electric furnace is mostly applied to experiments and small-batch production in universities and industrial and mining enterprises. The furnace body of the experimental electric furnace comprises a shell, a furnace chamber and a heat preservation layer positioned between the shell and the furnace chamber, an electric heating element is arranged in the furnace chamber, electric energy is converted into heat energy through the electric heating element, objects in the furnace chamber are heated, and the thickness of a furnace chamber wall is required to be thicker when the temperature in the furnace chamber is higher.
The experimental furnace hearth is generally obtained by integrally extruding or grouting heavy high-temperature refractory materials and then firing at high temperature, and has the defects of large heat conductivity coefficient, large heat capacity and low yield. Meanwhile, the integral hearth is often deformed and even cracked due to thermal expansion at the initial use stage, particularly when the temperature rise or the cooling speed is high, the overall temperature of the hearth is uneven or the thermal stress is overlarge, and the service life of the hearth is shortened; the traditional hearth integral structure makes the waste gas difficult to remove when the articles are heated, and has corrosion effect on the electric heating element, so that the use and maintenance cost of the electric furnace are increased.
Therefore, the problems that the radial heat radiation and heat conduction of the existing electric furnace are high, and the energy conservation is not facilitated are solved, and the structure of the experimental electric furnace hearth is required to be reasonably designed, so that the experimental electric furnace hearth with good energy conservation effect can be provided, the thermal stress can be effectively released, and waste gas in the hearth can be smoothly discharged.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multi-layer assembled electric furnace hearth, which comprises an annular furnace wall, and a furnace top and a furnace bottom which are respectively positioned on the upper side and the lower side of the furnace wall, wherein at least one thermal expansion joint and at least one exhaust hole are arranged on the furnace wall, the thermal expansion joint and the exhaust hole penetrate through the furnace wall along the height direction of the furnace wall, and the thermal expansion joint extends from the inner wall of the furnace wall to the outer wall direction to the exhaust hole.
According to the actual situation requirements of bell-type, lifting-type and well-type experimental electric furnaces, the positions of the furnace top and the furnace bottom can be interchanged, and only the upper side and the lower side of the furnace wall are ensured.
For the multi-layer assembled electric furnace hearth, the included angle between the thermal expansion joint and the diameter direction of the furnace wall is more than 0 degrees and less than or equal to 70 degrees. Preferably, the included angle between the thermal expansion joint and the diameter direction of the furnace wall is 30 degrees-70 degrees.
In the multi-layer assembled electric furnace hearth, the thermal expansion joint extends to 1/5-4/5 of the thickness of the furnace wall along the inner wall of the furnace wall and is communicated with the exhaust hole. Preferably, the thermal expansion joint extends along the inner wall of the furnace wall to 2/3 of the thickness of the furnace wall.
In the multi-layer assembled electric furnace hearth, the furnace wall is uniformly provided with a plurality of thermal expansion joints and the exhaust holes.
In the multi-layer assembled electric furnace hearth, the furnace wall is formed by stacking a plurality of layers of annular wall bodies along the height direction. The contact surface of the wall body of the adjacent layer is a step surface.
In the multi-layer assembled electric furnace hearth, each layer of annular wall body of the furnace wall is formed by splicing a plurality of building blocks, and the contact surface of each adjacent building block is a step surface.
In the multi-layer assembled electric furnace hearth, the furnace top is provided with a heating element and a thermocouple mounting hole; the furnace bottom is provided with a furnace mouth and a furnace door matched with the furnace mouth.
In the multi-layer assembled electric furnace hearth, the furnace top, the furnace wall and the furnace bottom are made of high-temperature-resistant ceramic fiber boards.
The above technical solution of the invention has the following advantages over the prior art,
1. in the multi-layer assembled electric furnace hearth, the heat expansion gaps communicated in the height direction are formed in the furnace wall of the middle layer and are communicated with the exhaust holes; on the other hand, the waste gas in the hearth can be smoothly discharged through the thermal expansion joint and the exhaust hole communicated with the thermal expansion joint; and radial heat radiation and heat conduction of the hearth can be prevented, and the energy-saving effect of the hearth is improved.
2. In order to avoid radiation loss caused by a plurality of heat expansion joints which are arranged along the diameter direction of the inner circle and are perpendicular to each layer, the trend of the heat expansion joints is at a certain angle with the diameter, preferably between 30 and 70 degrees when the heat expansion joints are arranged. The structure can reduce partial heat loss, and can properly reduce the thickness of the hearth under the condition that the temperature of the outer wall of the hearth is the same, so that the electric furnace is lighter.
3. The thermal expansion joint of the present invention extends along the inner wall of the furnace wall to 1/5-4/5 of the thickness of the furnace wall and communicates with the exhaust port, preferably between 2/3 of the thickness of the furnace wall. The design mode can release thermal stress to a greater extent, reduce heat radiation and heat conduction, and further improve the energy-saving effect of the hearth.
4. The middle-layer furnace wall is formed by stacking a plurality of layers of wall bodies without inorganic high-temperature binders, so that the difficulty of hearth production is reduced, the production environment is improved, the production period can be obviously shortened, the cost is reduced, the production efficiency is improved, and the product percent of pass can be greatly improved. And each layer adopts the step to assemble, and every layer of annular wall body adopts the step concatenation of a plurality of same halving building blocks, has further avoided the heat radiation to multilayer pin-connected panel electric stove furnace is because of adopting modularized design, standardized production, pin-connected panel structure and no binder to assemble, only need change the building block at damage position after the individual building block damages in the use, reduces maintenance cost, practices thrift the maintenance time. The multi-layer assembled hearth has small wall thickness and small heat capacity, can solve the problems of large heat accumulation, low temperature rise and fall speed and overlarge energy consumption of the integral thick-wall hearth, is particularly suitable for the requirements of experimental electric furnaces, and meets the requirements of energy conservation and emission reduction.
5. The hearth is made of a high-temperature-resistant ceramic fiber board, and the heat conductivity of the high-temperature-resistant ceramic fiber board is as follows: 0.2W/m.K (1000 ℃), the thermal conductivity of air is: 0.0760 W/m.K (1000 ℃ C.), the former is about three times that of the latter. Therefore, compared with the existing electric furnace of the same specification, the experimental electric furnace produced by adopting the multi-layer assembled high-temperature-resistant ceramic fiber hearth saves more than 30% of electric energy through metering, and has the advantages of light weight, simple structure, easy processing and convenient installation and maintenance.
Drawings
FIG. 1 is a schematic view of the structure of a furnace wall in a hearth of a multi-layer assembled electric furnace according to the present invention;
FIG. 2 is a schematic view of the construction of the blocks making up the furnace wall;
FIG. 3 is a schematic view of the structure of the hearth of the multi-layer assembled electric furnace suitable for bell or lift;
FIG. 4 is a schematic view of a well-adapted multi-layer assembled electric furnace hearth of the present invention;
the reference numerals in the drawings are as follows: 1-furnace top, 11-thermocouple mounting hole, 2-furnace wall, 21-thermal expansion joint, 22-exhaust hole, 23-wall body, 24-building block, 25-step surface and 3-furnace bottom.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 3 and 4, the multi-layer assembled electric furnace hearth of the invention comprises an annular furnace wall 2, and a furnace top 1 and a furnace bottom 3 respectively positioned on the upper side and the lower side of the furnace wall 2, according to the actual situation needs of a bell jar type, a lifting type and a well type experimental electric furnace, the positions of the furnace top 1 and the furnace bottom 3 can be interchanged, fig. 3 is a furnace hearth suitable for the bell jar type or the lifting type experimental electric furnace, the furnace top 1 is positioned on the upper side, the furnace bottom 3 is positioned on the lower side, fig. 4 is a furnace hearth suitable for the well type experimental electric furnace, the furnace top 1 is positioned on the lower side, and the furnace bottom 3 is positioned on the upper side. As shown in fig. 1, the furnace wall 2 is provided with at least one thermal expansion slit 21 and at least one exhaust hole 22, the thermal expansion slit 21 and the exhaust hole 22 penetrate the furnace wall 2 along the height direction of the furnace wall 2, and the thermal expansion slit 21 extends from the inner wall of the furnace wall 2 to the outer wall direction to the exhaust hole 22.
The core technical scheme of the invention is that the thermal expansion joint 21 of the furnace wall 2 is communicated with the exhaust hole 22, so that the requirement of thermal expansion of the inner circle of the middle furnace wall 2 positioned in a high temperature area in the heating process of a hearth is met, and the effective release of thermal stress is ensured; on the other hand, the exhaust gas in the furnace chamber can be smoothly discharged through the thermal expansion gap 21 and the exhaust hole 22 communicated with the thermal expansion gap 21; and radial heat radiation and heat conduction of the hearth can be prevented, and the energy-saving effect of the hearth is improved.
As a specific structure of the technical scheme of the invention, as shown in figure 1, the heat expansion joint 21 has a certain included angle with the diameter direction of the furnace wall 2, and the structure can avoid radiation loss caused by a plurality of heat expansion joints which are arranged along the diameter direction of the inner circle and are perpendicular to each layer, reduce partial heat conduction, and properly reduce the thickness of the furnace under the condition that the temperature of the outer wall of the furnace cavity is the same, so that the weight of the electric furnace is lightened. The angle is selected to be 0 DEG < a < 70 DEG, preferably 30 DEG < a < 70 deg.
In order to release thermal stress to a greater extent, heat radiation and heat conduction are reduced, and the energy-saving effect of the hearth is further improved. The expansion joint 21 extends along the inner wall of the furnace wall 2 to 1/5-4/5 of the thickness of the furnace wall 2 and communicates with the exhaust hole 22, most preferably 2/3 of the thickness of the furnace wall. Wherein the thermal expansion gap 21 has a width of 0.1mm to 10mm, and an optimal width of 2 mm to 5mm. The diameter of the exhaust hole is 3-30mm, and the optimal diameter is 5-10mm.
In order to ensure uniform release of thermal stress from the furnace wall 2, as shown in fig. 1, the furnace wall 2 is uniformly provided with two thermal expansion gaps 21 and the exhaust holes 22. According to the inner diameter of the furnace wall, 3 strips, 4 strips and more strips can be uniformly arranged according to the situation.
In order to avoid cracking of the furnace due to thermal expansion or excessive thermal stress of the integrated high-temperature furnace, the furnace wall 2 in the embodiment is formed by stacking a plurality of layers of wall bodies 23. And the contact surface of the wall body 23 of the adjacent layer is a step surface. This further avoids heat radiation.
Meanwhile, in this embodiment, each layer of the wall body 23 of the furnace wall 2 is formed by splicing a plurality of blocks 24, as shown in fig. 2, the contact surface of the adjacent blocks 24 is a step surface 25. The multi-layer assembled electric furnace hearth adopts a modularized design, an assembled structure and binder-free assembly, so that only the damaged part of the plates needs to be replaced after the respective plates are damaged in use, the maintenance cost is shortened, and the maintenance time is saved. The multi-layer assembled hearth has small wall thickness and small heat capacity, can solve the problems of large heat accumulation, low temperature rise and fall speed and overlarge energy consumption of the integral thick-wall hearth, and is particularly suitable for the requirements of energy conservation and emission reduction.
The furnace top 1 in the hearth of the multi-layer assembled electric furnace is provided with a heating element and a thermocouple mounting hole 11; the furnace bottom 3 is provided with a furnace mouth and a furnace door matched with the furnace mouth. The furnace top 1, the furnace wall 2 and the furnace bottom 3 are made of high-temperature resistant ceramic fiber plates.
The design of the thermal expansion joint 21 in the invention is not limited to the experimental electric furnace, and the industrial furnace is also applicable to the technical scheme of the invention.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (11)
1. The utility model provides a multilayer pin-connected panel electric stove furnace, its includes, annular oven (2), and is located furnace roof (1) and stove bottom (3) of both sides about oven (2) respectively, its characterized in that: the furnace wall (2) is provided with at least one thermal expansion joint (21) and at least one exhaust hole (22), the thermal expansion joint (21) and the exhaust hole (22) penetrate through the furnace wall (2) along the height direction of the furnace wall (2), and the thermal expansion joint (21) extends from the inner wall of the furnace wall (2) to the outer wall direction to the exhaust hole (22).
2. The multi-layer assembled electric furnace hearth according to claim 1, wherein: the included angle between the thermal expansion joint (21) and the diameter direction of the furnace wall (2) is more than 0 DEG and less than or equal to 70 deg.
3. The multi-layer assembled electric furnace hearth according to claim 2, wherein: the included angle between the thermal expansion joint (21) and the diameter direction of the furnace wall (2) is more than or equal to 30 degrees and less than or equal to 70 degrees.
4. A multi-layer assembled electric furnace hearth according to any one of claims 1-3, characterized in that: the thermal expansion joint (21) extends along the inner wall of the furnace wall (2) to 1/5-4/5 of the thickness of the furnace wall (2) and is communicated with the exhaust hole.
5. The multi-layer assembled electric furnace hearth according to claim 4, wherein: the thermal expansion joint extends along the inner wall of the furnace wall to 2/3 of the thickness of the furnace wall.
6. A multi-layer assembled electric furnace hearth according to any one of claims 1-3, characterized in that: a plurality of thermal expansion joints (21) and exhaust holes (22) are uniformly formed on the furnace wall (2).
7. A multi-layer assembled electric furnace hearth according to any one of claims 1-3, characterized in that: the furnace wall (2) is formed by stacking a plurality of layers of wall bodies (23).
8. The multi-layer assembled electric furnace hearth of claim 7, wherein: the contact surface of the wall body (23) of the adjacent layer is a step surface.
9. The multi-layer assembled electric furnace hearth of claim 7, wherein: each layer of wall body (23) of the furnace wall (2) is formed by splicing a plurality of building blocks (24), and the contact surface of the adjacent building blocks (24) is a step surface (25).
10. The multi-layered, assembled electric furnace firebox of any one of claims 1-3, 8, 9, wherein: the furnace top (1) is provided with a heating element and a thermocouple mounting hole (11); the furnace bottom (3) is provided with a furnace mouth and a furnace door matched with the furnace mouth.
11. A multi-layer assembled electric furnace hearth according to any one of claims 1-3, characterized in that: the furnace top (1), the furnace wall (2) and the furnace bottom (3) are made of high-temperature-resistant ceramic fiber plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498302.9A CN110145938B (en) | 2019-06-10 | 2019-06-10 | Multi-layer assembled electric furnace hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498302.9A CN110145938B (en) | 2019-06-10 | 2019-06-10 | Multi-layer assembled electric furnace hearth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145938A CN110145938A (en) | 2019-08-20 |
| CN110145938B true CN110145938B (en) | 2024-01-19 |
Family
ID=67590718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910498302.9A Active CN110145938B (en) | 2019-06-10 | 2019-06-10 | Multi-layer assembled electric furnace hearth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145938B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995884A (en) * | 2006-01-04 | 2007-07-11 | 朱明� | Combined pyrolytic boron nitride crucible lining |
| CN101349500A (en) * | 2008-05-16 | 2009-01-21 | 陈久斌 | Vertical kiln |
| CN201463502U (en) * | 2009-07-30 | 2010-05-12 | 重庆钢铁(集团)有限责任公司 | Pelletizing shaft furnace shell |
| CN201691641U (en) * | 2010-06-07 | 2011-01-05 | 黄锡阳 | Furnace body structure of combustion furnace |
| CN201945165U (en) * | 2011-01-31 | 2011-08-24 | 江阴长源机械制造有限公司 | Arched beam of kiln body in high-temperature region of pushed slab kiln under protection of nitrogen atmosphere |
| CN202246380U (en) * | 2011-10-09 | 2012-05-30 | 重庆莱弗窑炉技术有限公司 | Novel tank wall-cooling heat preservation structure for glass tank furnace |
| CN202770185U (en) * | 2012-08-29 | 2013-03-06 | 通达耐火技术股份有限公司 | Tunnel kiln car table board |
| JP2013112832A (en) * | 2011-11-25 | 2013-06-10 | Nippon Steel & Sumitomo Metal Corp | Skid post and split block for skid post |
| TW201337194A (en) * | 2012-03-09 | 2013-09-16 | Solar Energy & Materials Incorporate Ltd | Graphite crucible structure for blowing and smelting |
| CN203715659U (en) * | 2014-02-28 | 2014-07-16 | 陈维汉 | Cylinder body built of arc-shaped bricks with T-shaped cross sections for high-temperature pipeline |
| CN205403476U (en) * | 2016-02-26 | 2016-07-27 | 江苏瑞复达新材料有限公司 | Branch storehouse seam structure of unsetting refractory material furnace wall with backward flow function |
| CN206556062U (en) * | 2016-11-21 | 2017-10-13 | 山东瀛洲节能环保科技有限公司 | A kind of boiler setting expansion joint structure |
| CN207262958U (en) * | 2017-08-04 | 2018-04-20 | 平顶山市腾博耐火材料有限公司 | A kind of saggar |
| CN210569978U (en) * | 2019-06-10 | 2020-05-19 | 苏州鼎安科技有限公司 | Hearth of experimental electric furnace |
-
2019
- 2019-06-10 CN CN201910498302.9A patent/CN110145938B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995884A (en) * | 2006-01-04 | 2007-07-11 | 朱明� | Combined pyrolytic boron nitride crucible lining |
| CN101349500A (en) * | 2008-05-16 | 2009-01-21 | 陈久斌 | Vertical kiln |
| CN201463502U (en) * | 2009-07-30 | 2010-05-12 | 重庆钢铁(集团)有限责任公司 | Pelletizing shaft furnace shell |
| CN201691641U (en) * | 2010-06-07 | 2011-01-05 | 黄锡阳 | Furnace body structure of combustion furnace |
| CN201945165U (en) * | 2011-01-31 | 2011-08-24 | 江阴长源机械制造有限公司 | Arched beam of kiln body in high-temperature region of pushed slab kiln under protection of nitrogen atmosphere |
| CN202246380U (en) * | 2011-10-09 | 2012-05-30 | 重庆莱弗窑炉技术有限公司 | Novel tank wall-cooling heat preservation structure for glass tank furnace |
| JP2013112832A (en) * | 2011-11-25 | 2013-06-10 | Nippon Steel & Sumitomo Metal Corp | Skid post and split block for skid post |
| TW201337194A (en) * | 2012-03-09 | 2013-09-16 | Solar Energy & Materials Incorporate Ltd | Graphite crucible structure for blowing and smelting |
| CN202770185U (en) * | 2012-08-29 | 2013-03-06 | 通达耐火技术股份有限公司 | Tunnel kiln car table board |
| CN203715659U (en) * | 2014-02-28 | 2014-07-16 | 陈维汉 | Cylinder body built of arc-shaped bricks with T-shaped cross sections for high-temperature pipeline |
| CN205403476U (en) * | 2016-02-26 | 2016-07-27 | 江苏瑞复达新材料有限公司 | Branch storehouse seam structure of unsetting refractory material furnace wall with backward flow function |
| CN206556062U (en) * | 2016-11-21 | 2017-10-13 | 山东瀛洲节能环保科技有限公司 | A kind of boiler setting expansion joint structure |
| CN207262958U (en) * | 2017-08-04 | 2018-04-20 | 平顶山市腾博耐火材料有限公司 | A kind of saggar |
| CN210569978U (en) * | 2019-06-10 | 2020-05-19 | 苏州鼎安科技有限公司 | Hearth of experimental electric furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110145938A (en) | 2019-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101219898B (en) | Ceramic product baking and kiln-loading method | |
| CN100494853C (en) | Preparation method of industrial furnace | |
| CN201885563U (en) | Belt-shaped furnace | |
| US20210381768A1 (en) | Modular enclosure structure of high temperature heating furnace and installation method | |
| CN110145938B (en) | Multi-layer assembled electric furnace hearth | |
| CN102032782A (en) | Clock hood type furnace | |
| CN210569978U (en) | Hearth of experimental electric furnace | |
| CN202267361U (en) | Plate-type combination high temperature experiment electric furnace hearth | |
| CN2553319Y (en) | Energy-saving resistor furnace | |
| CN202032894U (en) | High temperature furnace top plate | |
| CN105778977A (en) | Ethylene cracking furnace | |
| CN211903746U (en) | Anti-scouring wear-resistant refractory lining prefabricated brick for furnace and kiln | |
| CN205909678U (en) | Energy -saving insulation stove | |
| CN206235225U (en) | A kind of combined type honeycomb regenerator ceramics | |
| CN212902588U (en) | Energy-saving roasting furnace | |
| CN204413062U (en) | Environmental protection and energy saving precision casting shell electric roasting furnace | |
| CN211233944U (en) | Module structure wall of high-temperature heating furnace | |
| CN210512690U (en) | Kiln structure with heat recovery function | |
| CN206974175U (en) | A kind of energy saving temperature controlling industrial furnace | |
| CN201553699U (en) | Thermal insulation device for maintaining bottom of coke oven | |
| CN203869491U (en) | Heat preservation type tunnel kiln | |
| CN217922240U (en) | Fire-resistant steel rolling heating furnace | |
| CN201867064U (en) | Combined type full fiber structure ignition and heat insulation furnace | |
| CN202734545U (en) | Novel industrial kiln | |
| CN219713961U (en) | Vacuum furnace for sintering silicon carbide roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |