CN213687862U - Furnace shell anticorrosion kiln - Google Patents
Furnace shell anticorrosion kiln Download PDFInfo
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- CN213687862U CN213687862U CN202022216559.1U CN202022216559U CN213687862U CN 213687862 U CN213687862 U CN 213687862U CN 202022216559 U CN202022216559 U CN 202022216559U CN 213687862 U CN213687862 U CN 213687862U
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Abstract
A furnace shell anti-corrosion kiln belongs to the technical field of kiln facilities. Comprises a furnace shell; the furnace bottom lining is arranged along the length direction of the furnace shell; a pair of furnace wall linings arranged along one side of the wall of the furnace shell cavity facing each other; the furnace top is arranged in the furnace shell cavity; sagger conveying rollers which are distributed at intervals along the length direction of the hearth; the upper heating rod and the lower heating rod are positioned above and below the sagger conveying roller; the two ends of the protective gas inlet pipe extend out of the furnace shell after penetrating through the pair of furnace wall linings, and the middle part of the protective gas inlet pipe is positioned in the hearth; the method is characterized in that: the furnace bottom liner comprises a furnace bottom, a lower refractory brick layer and a furnace bottom waterproof heat-preservation plate layer; the pair of furnace wall linings respectively comprise a heat preservation siding wall and a brick wall, the heat preservation siding wall is formed by combining a plurality of furnace wall lining heat preservation boards, the bottom of the heat preservation siding wall is supported at the edge part of the furnace bottom lining, the brick wall is formed by building refractory bricks, the bottom of the brick wall is supported at the edge part of the furnace bottom lining, and the upper parts of the heat preservation siding wall and the brick wall extend upwards. Prevent the furnace shell from being corroded, prolong the service life and save the cost.
Description
Technical Field
The utility model belongs to the technical field of kiln facility, concretely relates to stove outer covering anticorrosion kiln.
Background
The foregoing kiln is mainly, but not absolutely limited to, used for sintering (also referred to as "firing") electronic powder materials, electronic components, and the like, and is thus conventionally referred to as an electronic kiln.
As is known in the art, a tunnel-type electronic kiln, particularly for sintering various electronic powder materials and electronic components, is generally divided into a preheating section (where a feed inlet is located at the front end of the preheating section), a heating section, a constant temperature section, a cooling section, and a cooling section (where a discharge outlet is located at the end of the cooling section) according to process requirements during a sintering process in which a product slowly moves from a feed inlet to a discharge outlet.
As is known in the art, the shell of the aforementioned furnaces is generally a carbon steel shell, inside which there is a bottom lining, a pair of mutually corresponding wall linings and a roof. Furthermore, as is known in the art, the service life of the furnace shell plays a decisive role in the service life of the furnace, and the factors influencing the service life of the furnace shell are the corrosion of the furnace shell, and the corrosion sources mainly come from glue gas, moisture and the like volatilized from the sintered products.
Still as known in the art, some materials to be sintered in a furnace typically have high moisture content, such as high-nickel ternary positive electrode materials (iron aluminum phosphate (LFP), Lithium Manganate (LMO) and ternary material (NCM/NCA)) in the category of lithium ion battery materials, and during sintering in the furnace, a large amount of colloid moisture is volatilized, and penetrates to the furnace shell through the furnace lining and adheres to the steel furnace shell durably for a long time, so that the steel furnace shell is corroded, the furnace shell strength and the service life of the furnace are seriously affected, and even the furnace is scrapped in advance. This situation is more severe in mass production furnaces used for a long period of time. On one hand, the replacement period of the kiln equipment is shortened by a user, so that the equipment updating investment cost of a kiln manufacturer is increased, and on the other hand, unreasonable resource waste is caused, so that the method is contrary to the energy-saving economic spirit advocated by the whole society at present.
Although the technical problems mentioned above have been troubling kiln manufacturers and difficult for kiln users for a long time, the technical problems mentioned above are not avoidable, and even become the normal default of equipment manufacturers and users, since the lining of kilns is always considered by the industry as the best choice or even as the only choice for masonry with refractory bricks. However, the applicant believes that the aforementioned technical problems are not always solved effectively just due to the influence of the aforementioned design concept and the constraint of the conventional design thinking.
In the published chinese patent literature, technical information similar to the above-mentioned kiln of the applicant can be found, such as CN208059547U (lithium battery material sintering roller kiln), CN210802019U (kiln), CN111351347A (double-layer roller kiln), and CN209639527U (new type of flat-top roller kiln lining structure and roller kiln), etc. However, none of the patents cited above, without being limited thereto, give any indication of how to effectively solve the problem of corrosion of the furnace shell by attack by colloidal moisture, for which the applicant has long been a useful search and design and has finally developed the technical solutions described below.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can improve the furnace lining structure effectively and can avoid oozing to the stove outer covering and produce the stove outer covering through the furnace lining and corrode, be of value to showing the life who prolongs the stove outer covering and can ensure the whole life of kiln and both can alleviate the equipment renewal economic burden that uses kiln equipment manufacturer and can prevent the unreasonable extravagant stove outer covering anticorrosion kiln of resource from the material of going into the stove sintering colloid moisture.
The utility model aims to solve the problem that the furnace shell anticorrosion kiln comprises a furnace shell; the furnace bottom lining is arranged at the bottom of a furnace shell cavity of the furnace shell along the length direction of the furnace shell; a pair of furnace wall linings respectively arranged along the length direction of the opposite side of the cavity wall of the furnace shell cavity and respectively supported at the edge part of the furnace bottom lining; a furnace top which is provided in the furnace shell cavity at a position corresponding to a space between upper portions of the pair of furnace wall linings in the longitudinal direction and which is fitted to the upper portions of the pair of furnace wall linings, wherein a space surrounded by the furnace top, the furnace bottom and the pair of furnace wall linings is formed as a furnace chamber which penetrates from one end to the other end, and a flue for discharging flue gas generated in the furnace chamber to the furnace chamber is formed at a position corresponding to each temperature zone in the longitudinal direction of the furnace chamber on the furnace top; sagger conveying rollers which are distributed at intervals along the length direction of the hearth, two ends of the sagger conveying rollers are rotatably supported on the furnace shell after respectively penetrating through the pair of furnace wall linings and the furnace shell, and the middle parts of the sagger conveying rollers are positioned in the hearth; the upper heating rod and the lower heating rod are distributed at intervals along the length direction of the hearth, the upper heating rod and the lower heating rod are respectively positioned above and below the sagger conveying roller, two ends of the upper heating rod and the lower heating rod respectively penetrate through the pair of furnace wall linings and then extend out of the furnace shell, and the middle part of the upper heating rod and the lower heating rod is positioned in the hearth; protective gas introducing pipes which are distributed at intervals along the length direction of the hearth and are used for introducing protective gas into the hearth, wherein both ends of each protective gas introducing pipe also extend out of the furnace shell after respectively penetrating through the pair of furnace wall linings, and the middle part of each protective gas introducing pipe is positioned in the hearth; is characterized in that the furnace bottom lining comprises a furnace bottom upper refractory brick layer, a furnace bottom lower refractory brick layer and a furnace bottom waterproof heat-preservation plate layer, wherein the furnace bottom lower refractory brick layer is built at the bottom of a furnace shell cavity of the furnace shell, the furnace bottom waterproof heat-preservation plate layer is arranged at the upper part of the furnace bottom lower refractory brick layer, the upper side surface and the lower side surface of the furnace bottom waterproof heat-preservation plate layer are respectively combined with a bottom waterproof layer, and the furnace bottom upper refractory brick layer is built above the furnace bottom waterproof heat-preservation plate layer; the pair of furnace wall linings respectively comprise an insulation board wall and a brick wall, the insulation board wall is formed by mutually combining a plurality of furnace wall lining insulation boards and is positioned between the brick wall and the length direction of the cavity wall of the furnace shell cavity of the furnace shell, the bottom of the insulation board wall is supported at the edge part of the furnace bottom lining, the brick wall is formed by building refractory bricks, the bottom of the brick wall is also supported at the edge part of the furnace bottom lining, the upper parts of the insulation board wall and the brick wall extend upwards, and in the insulation board wall, two side surfaces of one insulation board wall which is contacted with the furnace shell are respectively combined with an insulation board wall side waterproof layer.
In a specific embodiment of the utility model, the furnace bottom waterproof insulation board layer and the insulation board wall are aluminum silicate insulation boards.
In another specific embodiment of the present invention, both sides of the furnace top in the length direction are simultaneously supported on the upper portions of the insulating panel wall and the brickwork wall; the two ends of the upper heating rod, the lower heating rod and the protective gas inlet pipe are respectively supported on the heat preservation plate wall and the brickwork wall and extend out of one side of the furnace shell facing outwards; one end and the other end of the sagger conveying roller penetrate through the heat preservation plate wall and the bricklaying wall in a suspended state, extend out of the furnace shell and are rotatably supported on the outer wall of the furnace shell; the position of the protective gas inlet pipe in the hearth is positioned below the upper heating rod.
In another specific embodiment of the present invention, the upper heating rod is provided with an upper heating rod sheath tube, the lower heating rod is provided in a lower heating rod sheath tube, the two ends of the upper heating rod sheath tube and the lower heating rod sheath tube respectively pass through the brick wall and the insulation board wall, and the middle portion is located in the furnace chamber, an upper heating rod heat insulation sleeve is respectively sleeved at the two ends of the upper heating rod, the upper heating rod heat insulation sleeve is matched with the tube cavity of the upper heating rod sheath tube, a lower heating rod heat insulation sleeve is respectively sleeved at the two ends of the lower heating rod, and the lower heating rod heat insulation sleeve is matched with the tube cavity of the lower heating rod sheath tube.
In another specific embodiment of the present invention, the gas injection hole of the inlet tube for injecting the shielding gas into the furnace is disposed at a position spaced from the downward side of the middle of the shielding gas inlet tube.
In yet another embodiment of the present invention, the protective gas is nitrogen, hydrogen or an inert gas.
In a more specific embodiment of the invention, the furnace shell is supported in use on a furnace shell support frame.
The technical scheme provided by the utility model the technical effect lie in: because the furnace bottom lining adopts the furnace bottom waterproof and heat-insulating layer which is composed of the furnace bottom, the lower refractory brick layer and the furnace bottom and the lower refractory brick layer and is respectively combined with the bottom waterproof layer on the upper side surface and the lower side surface, and because the pair of furnace wall linings are respectively composed of the heat-insulating plate wall and the brick wall, and in the heat-insulating plate wall, the heat-insulating plate wall side waterproof layers are respectively combined on the two side surfaces of the heat-insulating plate wall adjacent to the furnace shell, the colloidal moisture volatilized from the material sintered in the furnace can be effectively prevented from permeating into the furnace shell through the furnace bottom lining and the pair of furnace wall linings, the corrosion of the furnace shell can be effectively prevented, the service life of the furnace shell can be obviously prolonged, the whole service life of the furnace can be correspondingly prolonged, and the advantages of saving the equipment renewal cost of a furnace equipment manufacturer and preventing the unreasonable waste of resources can be realized.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention.
Detailed Description
In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.
In the following description, all the concepts related to the directions or orientations such as up, down, left, right, front and rear are exemplified by the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.
Referring to fig. 1, a furnace shell 1 is shown, which furnace shell 1 is a steel furnace shell, more specifically a carbon steel furnace shell; the furnace shows a bottom lining 2, the furnace bottom lining 2 is arranged at the bottom of a furnace shell cavity of the furnace shell 1 along the length direction of the furnace shell 1; a pair of furnace wall linings 3 (i.e., left and right furnace wall linings) are shown, the pair of furnace wall linings 3 being provided along the longitudinal direction of the opposite sides of the chamber wall of the furnace shell chamber and supported on the edge portions of the furnace bottom lining 2; a ceiling 4 provided in the furnace shell cavity at a position corresponding to a space between upper portions of the pair of furnace wall linings 3 in the longitudinal direction and fitted to the upper portions of the pair of furnace wall linings 3, a space defined by the ceiling 4, the hearth 2, and the pair of furnace wall linings 3 together being a furnace 5a, the furnace 5a penetrating from one end, for example, a front end, to the other end, for example, a rear end, and a flue 41 for discharging flue gas generated in the furnace 5a to the furnace 5a being formed in the ceiling 4 at a position corresponding to each temperature zone in the longitudinal direction of the furnace 5 a; sagger conveyor rolls 5b for conveying the sagger 6 shown in the figure are shown, the sagger conveyor rolls 5b are distributed at intervals along the length direction of the furnace 5a, and both ends of the sagger conveyor rolls are rotatably supported on the furnace shell 1 after passing through the pair of furnace wall linings 3 and the furnace shell 1 respectively, and the middle parts of the sagger conveyor rolls 5b are positioned in the furnace 5 a; upper and lower heating rods 5c and 5d are shown spaced apart along the length of the furnace 5a, the upper and lower heating rods 5c and 5d being located above and below the sagger conveyor rolls 5b, respectively, and having both ends protruding out of the furnace shell 1 after passing through the pair of furnace wall linings 3, respectively, and a middle portion located within the furnace 5 a; and protective gas introducing pipes 5e for introducing a protective gas into the furnace chamber 5a are arranged at intervals along the length direction of the furnace chamber 5a, and both ends of the protective gas introducing pipes 5e also protrude out of the furnace shell 1 after passing through the pair of furnace wall linings 3 respectively, and the middle part is positioned in the furnace chamber 5 a.
As the technical scheme provided by the utility model: the furnace bottom lining 2 comprises a furnace bottom upper refractory brick layer 21, a furnace bottom lower refractory brick layer 22 and a furnace bottom waterproof insulation board layer 23, wherein the furnace bottom lower refractory brick layer 22 is built at the bottom of the furnace shell cavity of the furnace shell 1, the furnace bottom waterproof insulation board layer 23 is arranged at the upper part of the furnace bottom lower refractory brick layer 22, the upper side surface and the lower side surface of the furnace bottom waterproof insulation board layer 23 are respectively combined with a bottom waterproof layer 231, and the furnace bottom upper refractory brick layer 21 is built above the furnace bottom waterproof insulation board layer 23; the pair of furnace linings 3 each include a heat insulating panel wall 31 and a brickwork wall 32, the heat insulating panel wall 31 is formed by joining a plurality of furnace lining heat insulating panels to each other and is located between the brickwork wall 32 and the longitudinal direction of the wall of the furnace chamber of the furnace shell 1, the bottom of the heat insulating panel wall 31 is supported by the edge portion of the furnace bottom lining 2, the brickwork wall 32 is formed by brickwork, the bottom of the brickwork wall 32 is similarly supported by the edge portion of the furnace bottom lining 2, the upper portions of the heat insulating panel wall 31 and the brickwork wall 32 extend upward, and heat insulating panel wall side waterproof layers 311 are joined to both side surfaces of one heat insulating panel wall 31 which is in contact with the furnace shell 1 in the heat insulating panel wall 31.
In the present embodiment, the furnace bottom waterproof insulation board layer 23 and the insulation board wall 31 are aluminum silicate insulation boards.
In the present embodiment, the applicant does not limit the specific materials of the bottom waterproof layer 231 and the thermal insulation wall side waterproof layer 311, because the waterproof and high temperature resistant materials are more various, and the waterproof and high temperature resistant effects are good. In addition, because the furnace bottom waterproof heat-preservation plate layer 23 and the heat-preservation plate wall 31 both use aluminum silicate heat-preservation plates, the plates have the advantages of excellent temperature resistance, water resistance, low shrinkage rate, no cold bridge or heat bridge formation and the like, and the plates are extremely selected to be used as furnace linings.
As shown in fig. 1, both sides of the furnace ceiling 4 in the longitudinal direction are supported on the upper portions of the insulating panel wall 31 and the brick wall 32; the two ends of the upper heating rod 5c, the lower heating rod 5d and the protective gas inlet pipe 5e are respectively supported on the heat insulation plate wall 31 and the brickwork wall 32 and extend out of one side of the furnace shell 1 facing outwards; one end and the other end of the sagger conveyor roller 5b penetrate through the insulation board wall 31 and the brick wall 32 in a suspended state, extend out of the furnace shell 1 and are rotatably supported on the outer wall of the furnace shell 1; the position of the shielding gas introducing pipe 5e in the furnace 5a is located below the upper heating rod 5 c.
The upper heating rod 5c is provided with an upper heating rod protecting pipe 5f, the lower heating rod 5d is provided in a lower heating rod protecting pipe 5g, two ends of the upper heating rod protecting pipe 5f and the lower heating rod protecting pipe 5g respectively penetrate through the brick wall 32 and the insulation board wall 31 in sequence, the middle part of the upper heating rod protecting pipe and the lower heating rod protecting pipe is positioned in the hearth 5a, two ends of the upper heating rod 5c are respectively sleeved with an upper heating rod heat insulating sleeve 5h, the upper heating rod heat insulating sleeves 5h are matched with the pipe cavity of the upper heating rod protecting pipe 5f, two ends of the lower heating rod 5d are respectively sleeved with a lower heating rod heat insulating sleeve 5i, and the lower heating rod heat insulating sleeves 5i are matched with the pipe cavity of the lower heating rod protecting pipe 5 g.
An introducing pipe gas injection hole 5j for injecting the shielding gas into the furnace 5a is opened at a lower side of the middle portion of the shielding gas introducing pipe 5e at an interval.
In this embodiment, since the sintered product, i.e., the product contained in the sagger 6, is an aluminum nitride device and powder, the protective gas is nitrogen, and according to the common general knowledge, hydrogen and inert gases such as argon can be used according to different products and different process requirements. Even oxygen can be used as a reaction gas rather than a protective gas, for example, a positive electrode material of a sintered lithium battery, and oxygen can be used as a reaction gas to promote chemical reaction during sintering; conventional electronic powder and electronic devices generally use nitrogen as a protective gas, and the protective gas is hydrogen (reduction), and is generally used for metallization sintering of products, aluminum oxide, and sintering of electronic components.
In fig. 1, thermocouples 7 are also shown for the individual temperature zones of the furnace, for example, the preheating, heating, constant temperature, cooling and cooling zones.
When a large amount of volatile colloidal moisture (also referred to as "colloidal moisture") penetrates the hearth refractory brick layer 21 of the hearth lining 2 during sintering of a product, particularly a product having a high water content as mentioned above, it is blocked by the bottom waterproof layer 231 on the surface of the hearth waterproof insulation sheet layer 23, and it is difficult to attack the furnace shell 1 through the hearth refractory brick layer 22. In the same way, the colloidal moisture is blocked by the insulation board wall side waterproof layer 311 of one insulation board wall 31 adjacent to or in contact with the furnace shell 1 among the insulation board walls 31 of the structural system of the furnace wall lining 3, and thus the corrosion to the furnace shell 1 is hardly caused.
As shown in fig. 1, the furnace shell 1 is supported in the operating state on a furnace shell support frame 11.
The whole kiln, namely the whole working process or working principle of the furnace shell anti-corrosion kiln of the utility model belongs to the known technology, so the applicant does not explain.
To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.
Claims (7)
1. A furnace shell anti-corrosion kiln, which comprises a furnace shell (1); the furnace bottom lining (2), the furnace bottom lining (2) is arranged at the bottom of a furnace shell cavity of the furnace shell (1) along the length direction of the furnace shell (1); a pair of furnace linings (3), wherein the pair of furnace linings (3) are respectively arranged along the length direction of one opposite side of the cavity wall of the furnace shell cavity and are respectively supported at the edge part of the furnace bottom lining (2); a ceiling (4) which is provided in the furnace shell cavity at a position corresponding to a position between upper portions of the pair of furnace wall linings (3) in the longitudinal direction and which is fitted to the upper portions of the pair of furnace wall linings (3), wherein a space which is defined by the ceiling (4), the hearth lining (2), and the pair of furnace wall linings (3) together is configured as a furnace chamber (5a), the furnace chamber (5a) penetrates from one end to the other end, and a flue (41) for discharging flue gas generated in the furnace chamber (5a) out of the furnace chamber (5a) is formed in the ceiling (4) at a position corresponding to each temperature zone in the longitudinal direction of the furnace chamber (5 a); sagger conveyor rollers (5b), the sagger conveyor rollers (5b) are distributed at intervals along the length direction of the hearth (5a), two ends of the sagger conveyor rollers (5b) respectively penetrate through the pair of furnace wall linings (3) and the furnace shell (1) and then are rotatably supported on the furnace shell (1), and the middle parts of the sagger conveyor rollers (5b) are positioned in the hearth (5 a); upper heating rods (5c) and lower heating rods (5d) are distributed at intervals along the length direction of the hearth (5a), the upper heating rods (5c) and the lower heating rods (5d) are respectively positioned above and below the sagger conveying rollers (5b), two ends of each heating rod protrude out of the furnace shell (1) after each heating rod penetrates through the pair of furnace wall linings (3), and the middle part of each heating rod is positioned in the hearth (5 a); protective gas introducing pipes (5e) which are distributed at intervals along the length direction of the hearth (5a) and are used for introducing protective gas into the hearth (5a), wherein two ends of each protective gas introducing pipe (5e) also extend out of the furnace shell (1) after respectively penetrating through the pair of furnace wall linings (3), and the middle part of each protective gas introducing pipe is positioned in the hearth (5 a); the furnace bottom lining is characterized in that the furnace bottom lining (2) comprises a furnace bottom upper refractory brick layer (21), a furnace bottom lower refractory brick layer (22) and a furnace bottom waterproof heat-preservation plate layer (23), the furnace bottom lower refractory brick layer (22) is built at the bottom of a furnace shell cavity of the furnace shell (1), the furnace bottom waterproof heat-preservation plate layer (23) is arranged at the upper part of the furnace bottom lower refractory brick layer (22), the upper side surface and the lower side surface of the furnace bottom waterproof heat-preservation plate layer (23) are respectively combined with a bottom waterproof layer (231), and the furnace bottom upper refractory brick layer (21) is built above the furnace bottom waterproof heat-preservation plate layer (23); the pair of furnace wall linings (3) respectively comprise an insulation board wall (31) and a brickwork wall (32), the insulation board wall (31) is formed by combining a plurality of furnace wall lining insulation boards and is positioned between the brickwork wall (32) and the length direction of the cavity wall of a furnace shell cavity of the furnace shell (1), the bottom of the insulation board wall (31) is supported at the edge part of the furnace bottom lining (2), the brickwork wall (32) is formed by building refractory bricks, the bottom of the brickwork wall (32) is also supported at the edge part of the furnace bottom lining (2), the insulation board wall (31) and the upper part of the brickwork wall (32) extend upwards, wherein in the insulation board wall (31), two side surfaces of one insulation board wall (31) which is contacted with the furnace shell (1) are respectively combined with an insulation board wall side surface (311).
2. The furnace shell anti-corrosion kiln as recited in claim 1, characterized in that said furnace bottom waterproof insulation board layer (23) and said insulation board wall (31) are aluminum silicate insulation boards.
3. The furnace shell anti-corrosion kiln according to claim 1, characterized in that both sides of the furnace roof (4) in the length direction are simultaneously supported on the upper parts of the insulating plate walls (31) and brickwork walls (32); the two ends of the upper heating rod (5c), the lower heating rod (5d) and the protective gas inlet pipe (5e) are respectively supported on the heat preservation plate wall (31) and the bricklayed wall (32) and extend out of one side of the furnace shell (1) facing outwards; one end and the other end of the sagger conveying roller (5b) penetrate through the heat insulation plate wall (31) and the brick wall (32) in a suspended state, extend out of the furnace shell (1) and are rotatably supported on the outer wall of the furnace shell (1); the position of the protective gas introducing pipe (5e) in the hearth (5a) is located below the upper heating rod (5 c).
4. The furnace shell anticorrosion kiln according to claim 1, characterized in that said upper heating rod (5c) is provided inside an upper heating rod jacket tube (5f), the lower heating rod (5d) is arranged in a lower heating rod protecting pipe (5g), two ends of the upper heating rod protecting pipe (5f) and the lower heating rod protecting pipe (5g) respectively penetrate through the brickwork wall (32) and the insulation board wall (31) in sequence, the middle part of the upper heating rod protecting pipe and the lower heating rod protecting pipe are positioned in the hearth (5a), an upper heating rod heat insulation sleeve (5h) is respectively sleeved at the two ends of the upper heating rod (5c), the upper heating rod heat insulation sleeve (5h) is matched with the pipe cavity of the upper heating rod protective sleeve (5f), a lower heating rod heat insulation sleeve (5i) is respectively sleeved at the two ends of the lower heating rod (5d), the lower heating rod heat insulation sleeve (5i) is matched with the tube cavity of the lower heating rod protective sleeve (5 g).
5. The furnace shell anti-corrosion kiln according to claim 1, characterized in that an introducing pipe gas injection hole (5j) for injecting the shielding gas into the furnace chamber (5a) is opened at an interval on the side of the shielding gas introducing pipe (5e) facing downwards in the middle.
6. The furnace shell anticorrosion kiln according to claim 1, wherein the protective gas is nitrogen, hydrogen or an inert gas.
7. The furnace shell corrosion protection kiln according to claim 1, characterized in that the furnace shell (1) is supported in use on a shell support frame (11).
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| CN202022216559.1U CN213687862U (en) | 2020-09-30 | 2020-09-30 | Furnace shell anticorrosion kiln |
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| CN202022216559.1U CN213687862U (en) | 2020-09-30 | 2020-09-30 | Furnace shell anticorrosion kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932609A (en) * | 2021-10-14 | 2022-01-14 | 宁夏裕隆冶金制品有限公司 | Novel silicon carbide furnace bottom structure |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932609A (en) * | 2021-10-14 | 2022-01-14 | 宁夏裕隆冶金制品有限公司 | Novel silicon carbide furnace bottom structure |
| CN113932609B (en) * | 2021-10-14 | 2024-03-19 | 宁夏裕隆冶金制品有限公司 | Silicon carbide furnace bottom structure |
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Address after: 215562 Xinzhuang Industrial Park, Changshu City, Suzhou City, Jiangsu Province (Yangyuan) Patentee after: Suzhou Huike Technology Co.,Ltd. Address before: 215562 Xinzhuang Industrial Park, Changshu City, Suzhou City, Jiangsu Province (Yangyuan) Patentee before: SUZHOU HUIKE EQUIPMENT Co.,Ltd. |
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