CN213687835U - Novel atmosphere protection kiln structure - Google Patents

Abstract

A novel atmosphere protection kiln structure comprises a furnace shell; the furnace bottom liner is arranged at the bottom of the furnace shell cavity; 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 distributed 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 protective gas inlet pipe penetrates through the pair of furnace wall linings and then extends out of the furnace shell; the protective gas is nitrogen, hydrogen or inert gas; the furnace shell is a carbon steel furnace shell, the flue comprises a flue gas up-leading section and a flue gas out-leading section, the flue gas up-leading section is composed of a longitudinal smoke exhaust cavity and a transverse transition smoke exhaust cavity, the flue gas out-leading section is composed of a flue gas longitudinal exhaust cavity and a smoke exhaust port, the lower end of the longitudinal smoke exhaust cavity is communicated with the upper part of the furnace cavity, the upper end of the longitudinal smoke exhaust cavity is connected with one end of the transverse transition smoke exhaust cavity, the other end of the transverse transition smoke exhaust cavity is connected with one side of the middle part of the flue gas longitudinal exhaust cavity, and the lower part of the. Ensuring the cleanness of the hearth; the smoke exhaust effect is good.

Description

Novel atmosphere protection kiln structure

Technical Field

The utility model belongs to the technical field of kiln facility, concretely relates to novel atmosphere protection kiln structure.

Background

The atmosphere protection furnace is called as an atmosphere protection furnace, and a certain specific gas such as nitrogen, hydrogen, mixed gas of nitrogen and hydrogen, inert gas and even oxygen is introduced according to different product process requirements in the process of sintering products at high temperature.

Technical information on the aforementioned kilns, such as CN208059547U (lithium battery material sintering roller furnace), CN210802019U (kiln), CN111351347A (double-layer roller furnace), and CN209639527U (novel flat-top roller furnace lining structure and roller furnace), etc., is not known in published chinese patent documents.

As described in the industry, many materials react during the sintering process of the kiln and release various gases and volatiles containing adhesives, which are discharged through a smoke outlet formed at the top of a hearth, namely the top of a furnace body, which is conventionally called a chimney, and are discharged after being subjected to environmental protection treatment. However, in the actual process of firing products in the kiln, it is often difficult or even impossible to avoid the situation that the glue contained in the flue gas is condensed on the exhaust flue, i.e., on the inner wall of the chimney, and the condensed glue may drip on the products in the hearth to cause pollution. The foregoing causes the colloid to drip at the root: the structure form of the chimney is a straight-through type. The straight-through chimney obviously has the advantages of small flue resistance and contribution to discharging glue-containing flue gas in a hearth, but compared with the quality problem caused by the fact that glue-containing steam meets condensation and drops into an open sagger to pollute products, the straight-through chimney is obviously more important than the straight-through chimney. In addition, the straight-through chimney also often contains the heat and loses the disadvantage of energy-conservation greatly to dissipate. In order to solve the problems, the patent scheme of the 'flue device of the atmosphere protection furnace' recommended by the Chinese patent CN209416082U changes the flue from a straight-through type in the prior art to an L-shaped flue, which can play a role in relieving the glue drops from attacking products in a sagger to a certain extent, but the L-shaped flue structure can not eliminate the problem that the glue condensed when meeting cold drops drop from the flue, and the L-shaped flue structure does not have the function of storing the dropped glue drops, so the L-shaped flue has the defects of addressing symptoms and not addressing the root causes. In addition, after the glue-containing vapor flows into the hearth when meeting the condensation knot, the effective periodic cleaning of the glue-containing vapor is very troublesome.

In view of the prior art, the positive significance of exploring the structure of the chimney on the top of the hearth, which is used for intercepting the colloid condensed in the flue gas at a reasonable position of the flue on the premise of basically not influencing the normal flue gas discharge and is beneficial to conveniently cleaning the furnace during the periodic shutdown inspection and maintenance of the furnace, is achieved under the background that the technical scheme to be introduced below is generated.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide a can be effectively with meeting the colloid of condensation knot in the flue gas and hold back and store up in reasonable position and supply the furnace body to implement when routine periodic shutdown and clear away and can avoid trickling into and drip to the stove or instil into in operating condition's the sagger and cause the novel atmosphere protection kiln structure of pollution to the product.

The utility model is a novel atmosphere protection kiln structure, which 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; the protective gas is nitrogen, hydrogen or inert gas; the furnace shell is a carbon steel furnace shell; the flues are arranged on the furnace top and distributed at the positions corresponding to each temperature zone of the hearth at equal intervals from left to right, and temperature zone partition beams are respectively arranged in the hearth and between each two adjacent temperature zones; is characterized in that the flue comprises a flue gas up-leading section and a flue gas leading-out section, the flue gas up-leading section consists of a longitudinal smoke exhaust cavity and a transverse transition smoke exhaust cavity, the flue gas leading-out section consists of a flue gas longitudinal exhaust cavity and a smoke exhaust port, the lower end of the longitudinal smoke exhaust cavity is communicated with the upper part of the hearth, the upper end of the longitudinal smoke exhaust cavity is connected and communicated with one end of the transverse transition smoke exhaust cavity, the other end of the transverse transition smoke exhaust cavity is connected and communicated with one side of the middle part of the height direction of the flue gas longitudinal exhaust cavity, the lower part of the flue gas longitudinal exhaust cavity is a colloid storage cavity, the smoke exhaust port is formed at the top of the flue gas longitudinal exhaust cavity and extends out of the top surface of the furnace shell, and colloid generated by the condensation of the flue gas from the smoke exhaust port drips into the.

The utility model discloses a concrete embodiment the spaced apart inlet port under flue, air duct and the complex group that is equipped with on the stove end liner, lower flue with furnace communicates with each other, and the air duct communicates with each other with furnace through constituting the air gap groove on the stove end liner, and the complex group down the inlet port respectively corresponding to the air duct and upper portion communicate with each other with the air duct, and the lower part communicates with each other with the space of admitting air down, should admit air the space and communicate with each other with the external world down, be provided with the lower exhaust mechanism that quantity and lower flue equal in the bottom of stove end liner and in the position that corresponds to lower flue, by this under the mechanism of admitting air with the stove end liner in the state of vacating in the terrace to the space constitution between each two adjacent under the mechanism of admitting air constitutes the space of admitting air down.

In another specific embodiment of the present invention, the lower exhaust mechanism comprises a lower exhaust flue, a lower exhaust flue left thermal insulation board, a lower exhaust flue right thermal insulation board, a lower exhaust flue casing, a lower exhaust flue channel connector and a lower exhaust flue support foundation, the lower exhaust flue is located below the furnace bottom lining and corresponds to the lower exhaust flue, the lower exhaust flue is surrounded by lower exhaust flue bricks which are matched up and down, left and right, and is communicated with the lower exhaust flue, the lower exhaust flue left thermal insulation board is arranged between the lower exhaust flue casing and the left side of the lower exhaust flue bricks, the lower exhaust flue right thermal insulation board is arranged between the lower exhaust flue casing and the right side of the lower exhaust flue bricks, the lower exhaust flue support foundation is located between the lower part of the lower exhaust flue bricks and the bottom of the lower exhaust flue casing, the lower exhaust flue channel is fixed with the lower exhaust flue casing at a position corresponding to the lower exhaust flue exhaust outlet of the lower exhaust flue, in a use state, the lower-row flue channel connecting port is connected with the flue gas leading-out pipeline, the space between the lower-row flue protecting shells of the two adjacent lower exhaust mechanisms is formed into the lower air inlet space, and one end of the lower-row flue, which is far away from the lower-row flue channel connecting port, is sealed by the lower-row flue interface cover plate.

In another specific embodiment of the present invention, the furnace bottom lining is made of bottom lining bricks, and the bottom lining bricks and the lower flue bricks are alumina bubble bricks, high alumina heat insulation bricks, mullite heat insulation bricks or light clay heat insulation bricks.

The utility model discloses a still another concrete embodiment, lower row of flue support basis include that lower row of flue supports end brick and waterproof board, lower row of flue supports the below that end brick is located the waterproof board and lays with the system of building lower row of flue protecting crust one side up, the waterproof board setting is in the one side that the lower discharge flue brick was upwards oriented, lower row of flue left side heat insulating board and lower row of flue right side heat insulating board supporting on this waterproof board.

In still another specific embodiment of the present invention, the lower flue duct left heat insulation board and the lower flue duct right heat insulation board are aluminum silicate heat insulation boards.

In a more specific embodiment of the present invention, the pair of furnace walls each include a heat-insulating stave wall and a brickwork wall, the heat-insulating stave wall is formed by combining a plurality of furnace wall lining heat-insulating plates with each other and is located between the brickwork wall and a longitudinal direction of a wall of a furnace shell cavity of the furnace shell, a bottom portion of the heat-insulating stave wall is supported at an edge portion of the furnace bottom lining, the brickwork wall is formed by brickwork, a bottom portion of the brickwork wall is also supported at an edge portion of the furnace bottom lining, upper portions of the heat-insulating stave wall and the brickwork wall extend upward, and both sides of the furnace top in the longitudinal direction are simultaneously supported at upper portions of the heat-insulating stave wall and the; 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 yet another specific embodiment of the present invention, the furnace wall lining insulation board is an aluminum silicate board; the brick walls are reserved with expansion joints at intervals in a longitudinal state, and high temperature resistant cotton is filled in the expansion joints and is rock wool, glass wool or aluminum silicate wool.

The utility model discloses a still more in a concrete embodiment, last heating rod be provided with one go up the heating rod protective sheath intraductally, lower heating rod set up in heating rod protective sheath once, go up the both ends of heating rod protective sheath and heating rod protective sheath down and respectively pass in proper order brick wall and lagging wall, and the middle part is located in furnace, in last heating rod's both ends respectively overlap and have put one go up the heating rod radiation shield, should go up the heating rod radiation shield with the lumen of going up the heating rod protective sheath cooperatees, respectively overlap and have put a heating rod radiation shield at the both ends of heating rod down, should down the heating rod radiation shield with the lumen of heating rod protective sheath cooperatees down.

In yet another specific embodiment of the present invention, the gas injection hole of the inlet tube is disposed at an interval on one side of the protective gas inlet tube facing downward for injecting the protective gas into the furnace.

The technical scheme provided by the utility model is that the structure of the flue of the furnace top is designed to be composed of a flue gas up-leading section and a flue gas leading-out section, the flue gas leading-out section is composed of a flue gas longitudinal discharge cavity and a smoke exhaust port, and the lower part of the flue gas longitudinal discharge cavity is composed as a colloid storage cavity, so that colloid generated by the condensation of the flue gas at the smoke exhaust port can drip into the colloid storage cavity, and cannot drip into the furnace cavity from the longitudinal smoke exhaust cavity or into the saggar in a working state to cause pollution to products; the cleaning of the hearth and the quality of products can be ensured; the colloid accumulated in the cavity storage cavity can be dug and cleaned conveniently when the furnace body is shut down regularly. In addition, because the waste flue gas of the heating section of the kiln is relatively more, a lower exhaust mechanism is creatively arranged at the bottom of the heating section of the kiln body, and the waste flue gas can be timely pumped away by connecting the lower exhaust mechanism to an exhaust chimney main pipeline of the kiln, so that the smoke exhaust effect of a hearth at the heating section is improved.

Drawings

Fig. 1 is a schematic view of an embodiment of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

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 of up, down, left, right, front and back are taken as examples of the position state of fig. 1, and thus, the present invention should not be construed as being particularly limited to the technical solutions provided by the present invention.

Referring to fig. 1 and 2, a furnace shell 1 is shown, that is, the furnace shell 1 is shown as a structural system of the furnace body, and the furnace body is divided into a preheating section, a temperature rising section, a constant temperature section, a temperature lowering section, a cooling section and the like in the length direction and from the process perspective according to the common general knowledge, so that although the temperature rising section is mainly shown in fig. 1 and 2, the understanding of the whole furnace by those skilled in the art is not confused; a furnace bottom lining 2 is shown, the furnace bottom lining 2 is arranged at the bottom of the furnace shell cavity of the furnace shell 1 along the length direction of the furnace shell 1; a pair of furnace linings 3, each of which is provided along the longitudinal direction of the opposite side of the wall of the furnace shell cavity and is supported by the edge portion of the furnace bottom lining 2; a ceiling 4 provided in the furnace chamber 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 bottom lining 2, and the pair of furnace wall linings 3 together constituting a furnace 5a, the furnace 5a penetrating from one end to the other end, for example, from the left end to the right end (a position state shown in fig. 1), and a flue 41 for exhausting 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 are shown, which are distributed at intervals along the length direction of the furnace 5a, and both ends of the sagger conveyor rolls 5b 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 of the sagger conveyor rolls 5b is 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; the protective gas introducing pipes 5e for introducing the protective gas into the furnace chamber 5a are shown at intervals along the length 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; the protective gas is nitrogen, hydrogen or inert gas; the furnace shell 1 is a carbon steel furnace shell; the flues 41 are distributed on the furnace top 4 at the positions corresponding to the temperature zones of the hearth 5a at equal intervals from left to right, and the temperature zone partition beams 5L are respectively arranged in the hearth 5a and between the two adjacent temperature zones.

As can be seen from the schematic illustration of fig. 2, the stove top 4 shown in the present embodiment is a circular arch top, but it is not intended to be limited to a circular arch top, and for example, a flat top may be used instead with reasonable measures, and the term flat top refers to: the ceiling 4 acts like the ceiling of a building with respect to the furnace chamber 5 a. The advantages of flat top can make the furnace design wider and help to improve productivity.

According to the above-mentioned description of the hearth 5a penetrating from one end to the other end, it can be determined without any problem that the left end of the furnace casing 1 at the temperature rising section shown in fig. 1 can be connected with a preheating section (not shown) in a flange connection manner and in a building block effect, the material inlet is located at the left end of the preheating section, the sagger 7 shown in fig. 2 is made to carry materials such as lithium battery materials to enter the temperature rising section shown in fig. 1 and then sequentially enters the above-mentioned constant temperature section, temperature lowering section and cooling section rightward, and the sagger 7 is made to exit from the material outlet at the right end of the cooling section after being cooled. Different temperature zones are also provided at each stage, and the sintering temperatures of the different temperature zones are different. The applicant is not repeated here as the foregoing is essentially of the common general knowledge.

As the technical scheme provided by the utility model: the flue 41 comprises a flue gas up-leading section 411 and a flue gas out-leading section 412, the flue gas up-leading section 411 comprises a longitudinal smoke exhaust cavity 4111 and a transverse transition smoke exhaust cavity 4112, the flue gas out-leading section 412 comprises a flue gas longitudinal exhaust cavity 4121 and a smoke exhaust port 4122, the lower end of the longitudinal smoke exhaust cavity 4111 is communicated with the upper part of the hearth 5a, the upper end of the longitudinal smoke exhaust cavity 4111 is connected and communicated with one end of the transverse transition smoke exhaust cavity 4112, the other end of the transverse transition smoke exhaust cavity 4112 is connected and communicated with the middle side of the height direction of the flue gas longitudinal exhaust cavity 4121, the lower part of the flue gas longitudinal exhaust cavity 4121 is formed into a colloid storage cavity 41211, the smoke exhaust port 4122 is formed at the top of the flue gas longitudinal exhaust cavity 4121 and extends out of the top surface of the furnace shell 1, and colloid generated by the condensation of the flue gas from the smoke exhaust port 4122 flows down into the colloid storage cavity 41211. In this way the flue structure faithfully fulfills the technical effects described by the applicant in the technical effects column above. Furthermore, it should be understood that: the furnace top 4 of the whole furnace in the region from the preheating section to the cooling section, namely from the feeding hole to the discharging hole is provided with a flue 41 with the structure.

A lower flue 21, an air groove 22 and a plurality of sets of lower air inlet holes 23 are provided on the bottom lining 2 at intervals in the longitudinal direction of the bottom lining 2, the lower flue 21 communicates with the furnace 5a, the air groove 22 communicates with the furnace 5a through an air gap groove 24 formed on the bottom lining 2, the plurality of sets of lower air inlet holes 23 correspond to the air groove 22 respectively, the upper portion communicates with the air groove 22, the lower portion communicates with a lower air inlet space 5f, the lower air inlet space 5f communicates with the outside, lower air exhausting mechanisms 6 equal in number to the lower flue 21 are provided at the bottom of the bottom lining 2 and at positions corresponding to the lower flue 21, the bottom lining 2 is in a state of being evacuated to the floor by the lower air exhausting mechanisms 6, and the space between each two adjacent lower air exhausting mechanisms 6 is constituted as the lower air inlet space 5 f. The lower exhaust mechanism 6 is only arranged at the temperature rising section of the kiln, because the smoke quantity of the temperature rising section is large.

With respect to the warming section shown in fig. 1, the present embodiment shows five lower exhaust mechanisms 6, five lower flues 21, five air grooves 22 and five groups of lower air intake holes 23, and the number of each group of lower air intake holes 23 is four, but obviously should not be limited by the number shown in the figure, because if the number of temperature zones of the warming section is increased (five in the present embodiment), the number of the aforementioned structures is also increased correspondingly, and vice versa.

The lower exhaust mechanism 6 includes a lower exhaust flue 61, a lower exhaust flue left heat insulating plate 62, a lower exhaust flue right heat insulating plate 63, a lower exhaust flue casing 64, a lower exhaust flue passage connecting port 65, and a lower exhaust flue supporting base 66, the lower exhaust flue 61 is located below the furnace bottom lining 2 and corresponds to the lower exhaust flue 21, the lower exhaust flue 61 is enclosed by lower exhaust flue bricks 611 fitted up and down and left and right and communicates with the lower exhaust flue 21, the lower exhaust flue left heat insulating plate 62 is provided between the lower exhaust flue casing 64 and the left side of the lower exhaust flue bricks 611, the lower exhaust flue right heat insulating plate 63 is provided between the lower exhaust flue casing 64 and the right side of the lower exhaust flue bricks 611, the lower exhaust flue supporting base 66 is located between the lower portion of the lower exhaust flue bricks 611 and the bottom of the lower exhaust flue casing 64, the lower exhaust flue passage connecting port 65 is fixed to the lower exhaust flue casing 64 at a position corresponding to the lower exhaust flue exhaust port of the lower exhaust flue 61 and extends out, in a use state, the lower flue duct channel connecting port 65 is connected to a flue gas leading-out pipeline, more specifically, to a kiln exhaust chimney main pipeline to facilitate timely extraction of waste flue gas, a space between the lower flue duct protective shells 64 of two adjacent lower exhaust mechanisms 6 is configured as the lower air intake space 5f, and one end of the lower flue duct 61, which is far away from the lower flue duct channel connecting port 65, is closed by a lower flue duct connecting cover plate 67. As can be seen from the above description, the lower exhaust mechanism 6 is only arranged in the temperature rising section of the kiln.

Continuing with fig. 1 and 2, the furnace bottom lining 2 is made of furnace bottom lining bricks, and in this embodiment, the furnace bottom lining bricks and the lower flue bricks 611 are alumina bubble bricks, but if high-alumina insulating bricks, mullite insulating bricks or light clay insulating bricks are used, they should be regarded as a practical technical means and still fall within the technical scope of the present invention.

The lower flue support base 66 includes lower flue support bottom bricks 661 and waterproof plates 662, the lower flue support bottom bricks 661 are located below the waterproof plates 662 and laid in a bricklaying manner, i.e., laid on the upward side of the bottom of the lower flue casing 64, the waterproof plates 662 are disposed on the upward side of the lower flue bricks 611, and the lower flue 61, the lower flue left insulating plate 62 and the lower flue right insulating plate 63 are supported on the waterproof plates 662.

In the present embodiment, the lower flue left heat insulation plate 62 and the lower flue right heat insulation plate 63 are aluminum silicate heat insulation plates. The lower flue casing 64 is a carbon steel casing.

Continuing to refer to fig. 1 and 2, each of the pair of furnace wall linings 3 includes a heat-insulating stave 31 and a bricklayed wall 32, the heat-insulating stave 31 is formed by combining a plurality of furnace wall lining heat-insulating plates and is located between the bricklayed wall 32 and the longitudinal direction of the wall of the furnace chamber of the furnace shell 1, the bottom of the heat-insulating wall 31 is supported on the edge of the hearth lining 2, the brick-laid wall 32 is formed by laying refractory bricks, the bottom of the brick-laid wall is supported on the edge portion of the furnace bottom lining 2, the insulating panel wall 31 and the upper portion of the brick-laid wall 32 extend upward, both sides in the longitudinal direction of the furnace roof 4 are supported on the upper portions of the insulating panel wall 31 and the brick-laid wall 32, that is, the furnace roof 4 is integrated with a pair of furnace wall linings 3, in the present embodiment, the furnace ceiling 4 is a dome ceiling and is constructed by bricks, and the flue 41 is constructed on the furnace ceiling 4 in the process of constructing the furnace ceiling 4 by bricks. If a ceiling-effect open-hearth furnace roof is used, as already mentioned above, the material of the furnace roof 4 is preferably light and it is reasonable to add a framework material, preferably made of alumina ceramic tubes. The aforementioned combination of the lightweight material such as the aluminum silicate lightweight fiberboard and the aluminum silicate fiberboard, the latter being disposed on the upper portion of the former, and the alumina ceramic tube being disposed inside the aluminum silicate lightweight fiberboard. The aforementioned flue 41 is constructed in a rational manner on a lightweight material.

Continuing to refer to fig. 1 and 2, the two ends of the upper heating rod 5c, the lower heating rod 5d and the shielding gas introducing pipe 5e are supported on the insulating board wall 31 and the brickwork wall 32 and extend out of the outward side of the furnace shell 1; 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.

In this embodiment, the furnace wall lining insulation board is an aluminum silicate board; an expansion joint 321 is reserved on the brickwork wall 32 at a longitudinal interval, and high temperature resistant cotton is filled in the expansion joint 321, and in this embodiment, the high temperature resistant cotton is rock wool, but glass wool or aluminum silicate wool may also be used.

The upper heating rod 5c is provided with an upper heating rod protecting pipe 5g, the lower heating rod 5d is provided in a lower heating rod protecting pipe 5h, two ends of the upper heating rod protecting pipe 5g and the lower heating rod protecting pipe 5h 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 5i, the upper heating rod heat insulating sleeves 5i are matched with the pipe cavity of the upper heating rod protecting pipe 5g, two ends of the lower heating rod 5d are respectively sleeved with a lower heating rod heat insulating sleeve 5j, and the lower heating rod heat insulating sleeves 5j are matched with the pipe cavity of the lower heating rod protecting pipe 5 h.

Preferably, heating rod supporting firebricks 5m each having a sheath tube abdicating hole are provided in the brick walls 32 at positions corresponding to both ends of the upper heating rod sheath tube 5g and the lower heating rod sheath tube 5h, and both ends of the upper heating rod sheath tube 5g and the lower heating rod sheath tube 5h are inserted through the holes in the heating rod supporting firebricks 5 m. Thermocouples 8 for detecting the temperature of the corresponding temperature zone in the furnace 5a are provided on the wall lining 3 on one side of the pair of wall linings 3 and at positions corresponding to the respective temperature zones.

As shown in fig. 2, an introducing pipe gas injection hole 5k for injecting the shielding gas into the furnace 5a is provided 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 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. The furnace shell 1 is a carbon steel furnace shell.

Already mentioned above are: the flues 41 are distributed on the furnace roof 4 at equal intervals from left, middle and right at positions corresponding to the temperature zones of the furnace 5a, that is, with respect to one temperature zone (five temperature zones of the temperature raising zone are shown in fig. 1), three flues may be provided at the top of the furnace roof 4 of each temperature zone in a distribution state of left, middle and right, where left, middle and right are exemplified by the position state shown in fig. 2, and if the position state shown in fig. 1 is taken, they are referred to as front, middle and rear.

Since the whole working process or working principle of the novel atmosphere protection kiln belongs to the known technology, the applicant does not explain the whole kiln.

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 (10)

1. A novel atmosphere protection kiln structure, 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 protective gas is nitrogen, hydrogen or inert gas; the furnace shell (1) is a carbon steel furnace shell; the flues (41) are distributed on the furnace top (4) at the positions corresponding to each temperature zone of the hearth (5a) at equal intervals from left to right, and temperature zone partition beams (5L) are respectively arranged in the hearth (5a) and between each two adjacent temperature zones; the furnace is characterized in that the flue (41) comprises a flue gas up-leading section (411) and a flue gas out-leading section (412), the flue gas up-leading section (411) consists of a longitudinal smoke exhaust cavity (4111) and a transverse transition smoke exhaust cavity (4112), the flue gas out-leading section (412) consists of a flue gas longitudinal exhaust cavity (4121) and a smoke exhaust port (4122), the lower end of the longitudinal smoke exhaust cavity (4111) is communicated with the upper part of the furnace chamber (5a), the upper end of the longitudinal smoke exhaust cavity (4111) is connected and communicated with one end of the transverse transition smoke exhaust cavity (4112), the other end of the transverse transition smoke exhaust cavity (4112) is connected and communicated with one side of the middle part of the height direction of the flue gas longitudinal exhaust cavity (4121), the lower part of the flue gas longitudinal exhaust cavity (4121) is a colloid storage cavity (41211), and the smoke exhaust port (4122) is formed at the top of the flue gas longitudinal exhaust cavity (4121) and extends out of the furnace shell top surface of the furnace shell (, the glue produced by the condensation of the fumes coming from the fume outlet (4122) drips into the glue storage chamber (41211).

2. The novel atmosphere protection kiln structure according to claim 1, characterized in that a lower flue (21), an air groove (22) and a plurality of sets of lower air intake holes (23) are provided on the bottom lining (2) at intervals, the lower flue (21) is communicated with the hearth (5a), the air groove (22) is communicated with the hearth (5a) through an air vent groove (24) formed on the bottom lining (2), the plurality of sets of lower air intake holes (23) are respectively corresponding to the air groove (22) and the upper portion is communicated with the air groove (22), and the lower portion is communicated with a lower air intake space (5f), the lower air intake space (5f) is communicated with the outside, lower air exhaust mechanisms (6) equal in number to the lower flue (21) are provided at the bottom of the bottom lining (2) and at the position corresponding to the lower flue (21), the bottom lining (2) is in a state of being evacuated to the floor by the lower air exhaust mechanisms (6), and the space between every two adjacent lower exhaust mechanisms (6) is formed into the lower air inlet space (5 f).

3. The novel atmosphere protection kiln structure according to claim 2, characterized in that the lower exhaust mechanism (6) comprises a lower exhaust flue (61), a lower exhaust flue left heat insulation board (62), a lower exhaust flue right heat insulation board (63), a lower exhaust flue protective shell (64), a lower exhaust flue channel connection port (65) and a lower exhaust flue support foundation (66), the lower exhaust flue (61) is located below the furnace bottom lining (2) and corresponds to the lower exhaust flue (21), the lower exhaust flue (61) is formed by enclosing lower exhaust flue bricks (611) which are matched up and down left and right and is communicated with the lower exhaust flue (21), the lower exhaust flue left heat insulation board (62) is arranged between the lower exhaust flue protective shell (64) and the left side of the lower exhaust flue bricks (611), the lower exhaust flue right heat insulation board (63) is arranged between the lower exhaust flue protective shell (64) and the right side of the lower exhaust flue bricks (611), the lower-row flue supporting foundation (66) is positioned between the lower part of the lower-row flue brick (611) and the bottom of the lower-row flue protective shell (64), a lower-row flue channel connecting port (65) is fixed with the lower-row flue protective shell (64) at a position corresponding to a lower-row flue exhaust outlet of the lower-row flue (61) and extends out of the lower-row flue protective shell (64), the lower-row flue channel connecting port (65) is connected with a flue gas leading-out pipeline in a use state, the space between the lower-row flue protective shells (64) of every two adjacent lower exhaust mechanisms (6) is formed into a lower air inlet space (5f), and one end, far away from the lower-row flue channel connecting port (65), of the lower-row flue (61) is sealed by a lower-row flue interface cover plate (.

4. The novel atmosphere protection kiln structure according to claim 3, characterized in that the furnace bottom lining (2) is built by furnace bottom lining bricks, and the furnace bottom lining bricks and the lower flue bricks (611) are alumina bubble bricks, high alumina heat insulation bricks, mullite heat insulation bricks or light clay heat insulation bricks.

5. A novel atmosphere protection kiln structure according to claim 3, characterized in that the lower flue duct support foundation (66) comprises lower flue duct support bottom bricks (661) and waterproof boards (662), the lower flue duct support bottom bricks (661) are located below the waterproof boards (662) and laid in a bricklayed manner on the side of the lower flue duct casing (64) facing upwards at the bottom, the waterproof boards (662) are arranged on the side of the lower flue duct bricks (611) facing upwards, and the lower flue duct (61), the lower flue duct left insulating board (62) and the lower flue duct right insulating board (63) are supported on the waterproof boards (662).

6. A novel atmosphere protection kiln structure according to claim 3 or 5, characterized in that the lower flue duct left heat insulation board (62) and the lower flue duct right heat insulation board (63) are aluminum silicate heat insulation boards.

7. The novel atmosphere protection furnace structure according to claim 1, wherein said pair of furnace wall linings (3) each comprise an insulating stave wall (31) and a brickwork wall (32), the insulating stave wall (31) being formed by a plurality of furnace wall lining insulating boards bonded to each other and located between the brickwork wall (32) and a longitudinal direction of a wall of a furnace shell cavity of said furnace shell (1), a bottom portion of the insulating stave wall (31) being supported at an edge portion of said furnace bottom lining (2), the brickwork wall (32) being formed by brickwork, a bottom portion of the brickwork wall (32) being also supported at an edge portion of the furnace bottom lining (2), an upper portion of the insulating stave wall (31) and the brickwork wall (32) extending upward, both longitudinal sides of said furnace top (4) being simultaneously supported at upper portions of the insulating stave wall (31) and the brickwork 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 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).

8. The novel atmosphere protection kiln structure according to claim 7, characterized in that the furnace wall lining insulation board is an aluminum silicate board; expansion joints (321) are reserved on the brick walls (32) at intervals in a longitudinal state, and high-temperature-resistant cotton is filled and embedded in the expansion joints (321) and is rock wool, glass wool or aluminum silicate wool.

9. A new atmosphere protection kiln structure according to claim 7, characterized in that the upper heating rod (5c) is arranged in an upper heating rod jacket tube (5g), the lower heating rod (5d) is arranged in a lower heating rod protecting pipe (5h), two ends of the upper heating rod protecting pipe (5g) and the lower heating rod protecting pipe (5h) 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 (5i) is respectively sleeved at the two ends of the upper heating rod (5c), the upper heating rod heat insulation sleeve (5i) is matched with the pipe cavity of the upper heating rod protective sleeve (5g), a lower heating rod heat insulation sleeve (5j) is respectively sleeved at the two ends of the lower heating rod (5d), the lower heating rod heat insulation sleeve (5j) is matched with the tube cavity of the lower heating rod protective sleeve (5 h).

10. The novel atmosphere protection kiln structure according to claim 1, characterized in that an introducing pipe gas injection hole (5k) for injecting the shielding gas into the furnace chamber (5a) is opened at a spacing state at one side of the shielding gas introducing pipe (5e) facing downward at the middle part.

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