CN213687836U - Kiln with temperature rising section having lower smoke discharging function - Google Patents

Abstract

A kiln with a temperature rise section having a smoke discharging function comprises a temperature rise section, wherein the temperature rise section comprises a temperature rise section furnace shell; the furnace bottom lining of the temperature rising section is arranged along the length direction of the furnace shell of the temperature rising section; the pair of temperature rise section furnace wall linings are arranged along one opposite side of the furnace shell cavity; the furnace top of the temperature rise section is arranged in the furnace shell cavity, and a flue is arranged on the furnace top of the temperature rise section; a lower flue, an air groove and a plurality of groups of lower air inlet holes are arranged on the bottom lining of the heating section at intervals, the lower flue is communicated with the hearth of the heating section, the air groove is communicated with the hearth of the heating section, the plurality of groups of lower air inlet holes correspond to the air groove, the upper part of the plurality of groups of lower air inlet holes is communicated with the air groove, the lower part of the plurality of groups of lower air inlet holes is communicated with a lower air inlet space, and the lower air; the method is characterized in that: and a lower smoke exhaust mechanism is arranged at the bottom of the furnace bottom lining of the temperature rising section and at a position corresponding to the lower flue, the furnace bottom lining of the temperature rising section is in a state of being emptied on the floor by the lower smoke exhaust mechanism, and the space between every two adjacent lower smoke exhaust mechanisms is formed into a lower air inlet space. Avoid the corrosion to the furnace shell of the temperature rise section and prolong the service life.

Description

Kiln with temperature rising section having lower smoke discharging function

Technical Field

The utility model belongs to the technical field of the kiln, concretely relates to intensification section has kiln of lower smoke discharge function.

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 known in the art, a kiln, particularly a tunnel-type electronic kiln for sintering various electronic powder materials and electronic components, is generally divided into a preheating section, a temperature raising section, a constant temperature section, a temperature lowering section and a cooling section according to process requirements during a sintering process of slowly moving a product from a material inlet to a material outlet, wherein the preheating is performed to avoid cracking of the electronic components, prevent heat loss in the kiln, prevent condensed water from being generated in the kiln, and the like. The product to be sintered enters a temperature rising section after passing through a preheating section, organic colloid contained in the product tends to volatilize and remove the glue due to heating in the temperature rising section, the glue removal amount in the area is the largest due to the relatively low temperature of the temperature rising section, so the degree of dew formation in a furnace body is the most serious in the whole furnace body in the temperature rising section, the dew formation phenomenon can influence the quality of the product, the dew formation can be accumulated at the furnace bottom and permeates into the furnace bottom lining to corrode the material, usually carbon steel, and the normal service life of the furnace is damaged.

Technical information similar to the above-mentioned kiln of the applicant can be found in published chinese patent documents, such as CN208059547U (lithium battery material sintering roller kiln), CN210802019U (a kiln), CN111351347A (a double-layer roller kiln), and CN209639527U (a new type of flat-top roller kiln lining structure and roller kiln), etc. However, none of the patents cited above teaches how to discharge the waste flue gas in the temperature raising section to the outside of the furnace in time to compensate for the above-mentioned technical problems, and the technical solutions described below are given in this context.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide a help in time drawing forth a large amount of flue gases with the section that heats and can avoid the colloid in the flue gas to deposit in the stove bottom and infiltration bottom brick even follow the bottom brick then ooze and the stove outer covering and have the kiln of lower smoke exhaust function to the section that heats that the stove outer covering corrodes.

The utility model aims to solve the problem that a kiln with a temperature rise section having a lower smoke discharge function comprises a temperature rise section, wherein the temperature rise section comprises a temperature rise section furnace shell; the furnace bottom lining of the temperature rising section is arranged at the bottom of a furnace shell cavity of the furnace shell of the temperature rising section along the length direction of the furnace shell of the temperature rising section; a pair of temperature rise section furnace wall linings which are respectively arranged along the length direction of one opposite side of the furnace shell cavity and are respectively supported at the edge parts of the temperature rise section furnace bottom lining; a heating section furnace top which is arranged in the furnace shell cavity at a position between the upper parts of the pair of heating section furnace wall linings in the length direction and is matched with the upper parts of the pair of heating section furnace wall linings, a space enclosed by the heating section furnace top, the heating section furnace bottom lining and the pair of heating section furnace wall linings is formed into a heating section hearth, and a flue for discharging flue gas generated in the heating section hearth out of the heating section hearth is formed at the position of each temperature zone on the heating section furnace top and in the length direction of the heating section hearth; a lower flue, an air groove and a plurality of groups of lower air inlet holes are arranged on the bottom lining of the temperature rising section at intervals, the lower flue is communicated with the hearth of the temperature rising section, the air groove is communicated with the hearth of the temperature rising section through an air gap groove formed on the bottom lining of the temperature rising section, the plurality of groups of lower air inlet holes respectively correspond to the air groove, the upper part of the lower air inlet holes is communicated with the air groove, the lower part of the lower air inlet holes is communicated with a lower air inlet space, and the lower air inlet space is communicated with the outside; is characterized in that lower smoke exhaust mechanisms with the same number as the lower flues are arranged at the bottom of the furnace bottom lining of the temperature rising section and at the position corresponding to the lower flues, the furnace bottom lining of the temperature rising section is in a state of being emptied on a floor by the lower smoke exhaust mechanisms, and the space between every two adjacent lower smoke exhaust mechanisms is formed into the lower air inlet space.

In a specific embodiment of the present invention, the lower flue gas exhaust mechanism comprises a lower flue, a lower flue left heat insulating plate, a lower flue right heat insulating plate, a lower flue casing, a lower flue passage connecting port and a lower flue support base, the lower flue is located below the bottom lining of the temperature rise section and corresponds to the lower flue, the lower flue is surrounded by lower flue bricks which are matched up and down, left and right, and is communicated with the lower flue, the lower flue left heat insulating plate is arranged between the lower flue casing and the left side of the lower flue bricks, the lower flue right heat insulating plate is arranged between the lower flue casing and the right side of the lower flue bricks, the lower flue support base is located between the lower part of the lower flue bricks and the bottom of the lower flue casing, the lower flue passage connecting port is fixed with the lower flue casing at a position corresponding to the lower flue exhaust outlet of the lower flue and extends out of the lower flue casing, 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 flue gas exhaust mechanisms is formed into the lower gas 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 a lower-row flue interface cover plate.

In another specific embodiment of the present invention, the bottom lining of the temperature rising section 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.

In another specific embodiment of the present invention, the lower flue discharge support base comprises a lower flue discharge support bottom brick and a waterproof board, the lower flue discharge support bottom brick is located below the waterproof board and laid in a building manner on the upward side of the bottom of the lower flue discharge protective shell, the waterproof board is arranged on the upward side of the lower flue discharge brick, and the lower flue discharge, the lower flue discharge left thermal insulation board and the lower flue discharge right thermal insulation board are supported on the waterproof board.

In 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 still another specific embodiment of the present invention, the lower exhaust flue protective shell is a carbon steel protective shell.

In a more specific embodiment of the present invention, sagger conveying rollers, an upper heating rod, a lower heating rod, and a shielding gas introducing pipe for introducing shielding gas into the temperature rise section furnace are distributed at intervals in the length direction of the temperature rise section furnace, both ends of the sagger conveying rollers are rotatably supported on the temperature rise section furnace shell after respectively passing through the pair of temperature rise section furnace wall linings and the temperature rise section furnace shell, while the middle part of the sagger conveying rollers is located in the temperature rise section furnace, both ends of the upper heating rod and the lower heating rod respectively extend out of the temperature rise section furnace shell after respectively passing through the pair of temperature rise section furnace wall linings, while the middle part is located in the temperature rise section furnace, both ends of the shielding gas introducing pipe also extend out of the temperature rise section furnace shell after respectively passing through the pair of temperature rise section furnace wall linings, and the middle part is located in the temperature rise section furnace; the pair of temperature rise section furnace wall linings respectively comprise a heat preservation board wall and a brick wall, the heat preservation board wall is formed by combining a plurality of furnace wall lining heat preservation boards and is positioned between the brick wall and the length direction of the cavity wall of the furnace shell cavity of the temperature rise section furnace shell, the bottom of the heat preservation board wall is supported at the edge part of the furnace bottom lining of the temperature rise section furnace, 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 of the temperature rise section furnace, the upper parts of the heat preservation board wall and the brick wall extend upwards, and two sides of the furnace top of the temperature rise section in the length direction are simultaneously supported at the upper parts of the heat preservation board wall and the brick 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 of the heating section facing outwards; one end and the other end of the sagger conveying roller penetrate through the heat insulation plate wall and the bricklaying wall in a suspended state, extend out of the furnace shell of the temperature rising section and are rotatably supported on the outer wall of the furnace shell of the temperature rising section; and the position of the protective gas inlet pipe in the heating section 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, an introducing pipe gas injection hole for injecting the shielding gas into the temperature rising section furnace is formed at a spacing on a side of the shielding gas introducing pipe facing downward at an interval; the protective gas is nitrogen, hydrogen or inert gas; the furnace shell of the temperature rising section is a carbon steel furnace shell.

The technical scheme provided by the utility model the technical effect lie in: because the lower exhaust gas fume mechanisms with the number equal to that of the lower flues are arranged at the bottom of the furnace bottom lining of the temperature rising section and at the position corresponding to the lower flues, the exhaust gas fume in the hearth of the temperature rising section is led out in time by the lower exhaust gas fume mechanisms, the colloid in the fume is prevented from depositing on the furnace bottom lining of the temperature rising section and permeating into the furnace shell of the temperature rising section, the corrosion to the furnace shell of the temperature rising section is avoided, and the service life of the furnace shell of the temperature rising section can be effectively protected and prolonged.

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 rear are in the position state shown in fig. 1, and thus, they should not be construed as particularly limiting the technical solution provided by the present invention.

Referring to fig. 1 and 2, a temperature rising section 100 in the structural system of the whole kiln is shown, wherein the temperature rising section 100 comprises a temperature rising section furnace shell 1; a temperature-rise-section furnace bottom lining 2, wherein the temperature-rise-section furnace bottom lining 2 is arranged at the bottom of a furnace shell cavity (namely, a temperature-rise-section furnace shell cavity) of the temperature-rise-section furnace shell 1 along the length direction of the temperature-rise-section furnace shell 1; a pair of temperature rise section furnace wall linings 3 are shown, and the temperature rise section furnace wall linings 3 are respectively arranged along the length direction of one opposite side of the furnace shell cavity and are respectively supported at the edge parts of the temperature rise section furnace bottom lining 2; a heating-stage furnace top 4 is shown, the heating-stage furnace top 4 is arranged in the furnace shell cavity at a position corresponding to the upper part of the pair of heating-stage furnace wall linings 3 in the length direction and is matched with the upper parts of the pair of heating-stage furnace wall linings 3, a space enclosed by the heating-stage furnace top 4, the heating-stage furnace bottom 2 and the pair of heating-stage furnace wall linings 3 is formed into a heating-stage furnace chamber 5a, and a flue 41 for exhausting flue gas generated in the heating-stage furnace chamber 5a out of the heating-stage furnace chamber 5a is formed on the heating-stage furnace top 4 and at a position corresponding to each temperature zone of the heating-stage furnace chamber 5a in the length direction; a lower flue 21, an air groove 22 and a plurality of groups of lower air inlet holes 23 are arranged on the heating section furnace bottom liner 2 at intervals, the lower flue 21 is communicated with the heating section furnace 5a, the air groove 22 is communicated with the heating section furnace 5a through an air gap groove 24 formed on the heating section furnace bottom liner 2, the plurality of groups of lower air inlet holes 23 respectively correspond to the air groove 22, the upper part of the lower air inlet holes is communicated with the air groove 22, the lower part of the lower air inlet holes is communicated with a lower air inlet space 5f, and the lower air inlet space 5f is communicated with the outside.

The technical key points of the technical scheme provided by the invention are as follows: lower flue gas discharge mechanisms 6 equal in number to the lower flues 21 are provided at the bottom of the furnace bottom lining 2 at positions corresponding to the lower flues 21, the furnace bottom lining 2 at the temperature raising stage is in a state of being emptied on the floor by the lower flue gas discharge mechanisms 6, and the space between each two adjacent lower flue gas discharge mechanisms 6 is constituted as the lower air intake space 5 f.

In the present embodiment, the temperature rising section shown in fig. 1 shows five lower smoke exhaust mechanisms 6, five lower flues 21, five air tanks 22 and five groups of lower air inlet holes 23, and the number of the lower air inlet holes 23 in each group is four, but obviously, the number of the structures is not limited by the number shown in the figure, because if the temperature zone number of the temperature rising section is increased (five in the present embodiment), the number of the structures is also increased correspondingly, and vice versa.

According to the common general knowledge, the kiln is divided lengthwise and from a process point of view into a preheating section, a heating section 100, a thermostatic section 200 (shown in fig. 1), a cooling section, and so on, and thus although the heating section is mainly shown in fig. 1 and 2, it does not confuse the understanding of the whole kiln by those skilled in the art.

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: relative to the heating section furnace 5a, the heating section furnace top 4 is just like the ceiling of a building. The advantages of flat top can make the furnace design wider and help to improve productivity.

In addition, according to the furnace shell flange edges at the two ends, such as the left end and the right end, of the furnace shell 1 illustrated in fig. 1, it can be determined without any problem that the left end of the furnace shell 1 at the temperature rising section illustrated in fig. 1 can be connected with a preheating section (not illustrated) in a flange connection manner and in a building block effect, the feeding port is located at the left end of the preheating section, and the sagger 7 illustrated in fig. 2 is loaded with materials, such as lithium battery materials, after being preheated by the preheating section, so as to enter the temperature rising section 100 illustrated in fig. 1, and then sequentially enters the constant temperature section 200, the cooling section and the cooling section illustrated in fig. 1, and after being cooled, the sagger 7 is discharged from the discharging port at the right end of the cooling section. 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.

The lower flue gas exhaust mechanism 6 includes a lower flue 61, a lower flue left heat insulating plate 62, a lower flue right heat insulating plate 63, a lower flue casing 64, a lower flue passage connecting port 65, and a lower flue support base 66, the lower flue 61 is located below the warming section hearth 2 and corresponds to the lower flue 21, the lower flue 61 is surrounded by lower flue bricks 611 fitted up and down and left and right and communicates with the lower flue 21, the lower flue left heat insulating plate 62 is provided between the lower flue casing 64 and the left side of the lower flue bricks 611, the lower flue right heat insulating plate 63 is provided between the lower flue casing 64 and the right side of the lower flue bricks 611, the lower flue support base 66 is located between the lower part of the lower flue bricks 611 and the bottom of the flue casing 64, the lower flue passage connecting port 65 is fixed to the lower flue casing 64 at a position corresponding to the lower flue exhaust port of the lower flue 61 and extends out of the flue casing 64, in a use state, the lower flue duct connection port 65 is connected to a flue gas extraction pipe, more specifically, to a kiln exhaust chimney main pipe, so as to facilitate timely extraction of waste flue gas, a space between the lower flue duct protective shells 64 of two adjacent lower flue gas 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 connection port 65, is closed by a lower flue duct connection port cover plate 67. As can be seen from the above description, the fume exhaust mechanism 6 is provided only in the temperature rise section 100 of the kiln.

Continuing with fig. 1 and 2, the aforementioned heating section furnace bottom lining 2 is constructed by building furnace bottom lining bricks, in this embodiment, the aforementioned furnace bottom lining bricks and the aforementioned lower row flue bricks 611 are alumina bubble bricks, but if high alumina insulating bricks, mullite insulating bricks or lightweight clay insulating bricks are used, they should be regarded as a proper technical means and still fall within the technical scope of the present disclosure.

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 embodiment, the lower flue left heat insulation board 62 and the lower flue right heat insulation board 63 are aluminum silicate heat insulation boards; the lower stack shell 64 is a carbon steel shell.

Continuing to refer to fig. 1 and fig. 2, sagger conveyor rollers 5b, upper heating rods 5c, lower heating rods 5d and a protective gas introducing pipe 5e for introducing protective gas into the heating-section furnace 5a are distributed at intervals in the length direction of the heating-section furnace 5a, two ends of the sagger conveyor rollers 5b are rotatably supported on the heating-section furnace shell 1 after respectively passing through the pair of heating-section furnace wall linings 3 and the heating-section furnace shell 1, the middle part of the sagger conveyor rollers 5b is positioned in the heating-section furnace 5a, two ends of the upper heating rods 5c and the lower heating rods 5d are extended out of the heating-section furnace shell 1 after respectively passing through the pair of heating-section furnace wall linings 3, while the middle part is positioned in the heating-section furnace shell 5a, two ends of the protective gas introducing pipe 5e are also extended out of the heating-section furnace shell 1 after respectively passing through the pair of heating-section furnace wall linings 3, and the middle part is positioned in the heating section hearth 5 a;

continuing with fig. 1 and 2, the pair of temperature rising zone furnace wall linings 3 each include a heat insulating panel wall 31 and a brick-built wall 32, the heat insulating panel wall 31 is formed by joining a plurality of furnace wall lining heat insulating panels to each other and is located between the brick-built wall 32 and the longitudinal direction of the cavity wall of the furnace cavity of the temperature rising zone furnace shell 1, the bottom of the heat insulating panel wall 31 is supported at the edge portion of the temperature rising zone furnace bottom lining 2, the brick-built wall 32 is formed by building refractory bricks, the bottom of the brick-built wall is also supported at the edge portion of the temperature rising zone furnace bottom lining 2, the heat insulating panel wall 31 and the upper portion of the brick-built wall 32 extend upward, both sides of the temperature rising zone furnace top 4 in the longitudinal direction are simultaneously supported at the upper portions of the heat insulating panel wall 31 and the brick-built wall 32, that is, the temperature rising zone furnace top 4 is integrally joined with the pair of temperature rising zone furnace wall linings 3, in this embodiment, since the temperature rising zone furnace top, therefore, the flue 41 is constructed by bricks, and is formed on the temperature rising stage roof 4 in the process of constructing the temperature rising stage roof 4 by the bricks. If the above-mentioned open roof, which is just like a ceiling effect, is used, the material of the heating zone roof 4 is preferably light and is reasonably supplemented by 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.

With reference to fig. 1 and fig. 2, the flue 41 includes a flue gas up-leading section 411 and a flue gas out-leading section 412, the flue gas up-leading section 411 is composed of a longitudinal smoke exhaust cavity 4111 and a transverse transition smoke exhaust cavity 4112, the flue gas out-leading section 412 is composed 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 heating section 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 one side of the middle part of the smoke longitudinal exhaust cavity 4121 in the height direction, the lower part of the smoke longitudinal exhaust cavity 4121 is formed into a colloid storage cavity 41211, the smoke exhaust port 4122 is formed at the top of the smoke longitudinal exhaust cavity 4121 and extends out of the top surface of the furnace shell of the temperature rising section furnace shell 1, and colloid generated by condensation of smoke from the smoke exhaust port 4122 drips into the colloid storage cavity 41211. The advantages of the flue structure are as follows: the colloid condensed in the flue gas can be retained in the colloid storage cavity 41211, the digging and clearing are very convenient when the kiln is regularly stopped, the colloid cannot drop into the sagger 7 in the working state to cause product pollution, and the cleanness of the heating section hearth 5a can be fully ensured; the other sections, such as the preheating section, the thermostatic section 200, the cooling section and the cooling section already mentioned above, also have the same discharge flue on the furnace roof as the aforementioned flue 41.

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 respectively supported on the insulating board wall 31 and the brickwork wall 32 and extend out of the outward side of the furnace shell 1 in the temperature rising section; one end and the other end of the sagger conveying roller 5b penetrate through the heat preservation plate wall 31 and the brick wall 32 in a suspended state, extend out of the furnace shell 1 of the temperature rising section and are rotatably supported on the outer wall of the furnace shell 1 of the temperature rising section; the protective gas introducing pipe 5e is located below the upper heating rod 5c at a position in the temperature-raising-stage furnace 5 a.

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 temperatures of the respective temperature zones in the temperature-rising-section furnace 5a are provided on one of the pair of temperature-rising-section furnace 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 of the temperature rising section is a carbon steel furnace shell.

Preferably, the aforementioned flues 41 are distributed on the aforementioned temperature rising section furnace top 4 at equal intervals of left, middle and right at the positions corresponding to the temperature zones of the temperature rising section furnace 5a, that is, with respect to one temperature zone (fig. 1 shows five temperature zones of the temperature rising section), three flues may be provided at the top of the temperature rising section furnace top 4 of each temperature zone in a distributed state of left, middle and right, where the 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.

As shown in fig. 1, temperature zone partition beams 5L are respectively disposed in the temperature-raising-stage furnace chamber 5a and between each two adjacent temperature zones.

The whole working process or working principle of the kiln with the temperature rise section having the lower smoke discharge function belongs to the known technology, so that 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 kiln with a temperature rise section and a smoke exhaust discharging function comprises a temperature rise section (100), wherein the temperature rise section (100) comprises a temperature rise section furnace shell (1); the heating section furnace bottom liner (2) is arranged at the bottom of a furnace shell cavity of the heating section furnace shell (1) along the length direction of the heating section furnace shell (1); a pair of temperature rise section furnace wall linings (3), wherein the pair of temperature rise section furnace wall linings (3) are respectively arranged along the length direction of one opposite side of the furnace shell cavity and are respectively supported at the edge part of the temperature rise section furnace bottom lining (2); a temperature rising section furnace top (4), wherein the temperature rising section furnace top (4) is arranged in the furnace shell cavity at a position between the upper parts of the pair of temperature rising section furnace wall linings (3) in the length direction and is matched with the upper parts of the pair of temperature rising section furnace wall linings (3), a space enclosed by the temperature rising section furnace top (4), the temperature rising section furnace bottom lining (2) and the pair of temperature rising section furnace wall linings (3) is formed into a temperature rising section hearth (5a), and a flue (41) for discharging flue gas generated in the temperature rising section hearth (5a) out of the temperature rising section hearth (5a) is formed on the temperature rising section furnace top (4) and at the position corresponding to each temperature zone of the temperature rising section hearth (5a) in the length direction; a lower flue (21), an air groove (22) and a plurality of groups of lower air inlet holes (23) are arranged on the warming section furnace bottom liner (2) at intervals, the lower flue (21) is communicated with the warming section hearth (5a), the air groove (22) is communicated with the warming section hearth (5a) through an air gap groove (24) formed on the warming section furnace bottom liner (2), the plurality of groups of lower air inlet holes (23) respectively correspond to the air groove (22), the upper part of the lower air inlet holes is communicated with the air groove (22), the lower part of the lower air inlet holes is communicated with a lower air inlet space (5f), and the lower air inlet space (5f) is communicated with the outside; the device is characterized in that lower exhaust gas mechanisms (6) with the number equal to that of the lower flues (21) are arranged at the bottom of the furnace bottom liner (2) at the temperature-raising section and at the positions corresponding to the lower flues (21), the furnace bottom liner (2) at the temperature-raising section is in a state of being emptied out of a floor by the lower exhaust gas mechanisms (6), and the space between every two adjacent lower exhaust gas mechanisms (6) is formed into a lower air inlet space (5 f).

2. The kiln with the warming section having the lower smoke discharging function according to claim 1, wherein the lower smoke discharging mechanism (6) comprises a lower smoke discharging duct (61), a lower smoke discharging duct left heat insulating plate (62), a lower smoke discharging duct right heat insulating plate (63), a lower smoke discharging duct protecting shell (64), a lower smoke discharging duct channel connecting port (65) and a lower smoke discharging duct supporting base (66), the lower smoke discharging duct (61) is positioned below the warming section bottom lining (2) and corresponds to the lower smoke discharging duct (21), the lower smoke discharging duct (61) is formed by enclosing lower smoke discharging duct bricks (611) which are matched up and down and left and right and is communicated with the lower smoke discharging duct (21), the lower smoke discharging duct left heat insulating plate (62) is arranged between the lower smoke discharging duct protecting shell (64) and the left side of the smoke discharging duct bricks (611), the lower smoke discharging duct right heat insulating plate (63) is arranged between the lower smoke discharging duct protecting shell (64) and the right side of the lower smoke, 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-row flue gas 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.

3. The kiln with the heating section having the lower smoke exhaust function according to claim 2, wherein the heating section bottom lining (2) is built by bottom lining bricks, and the bottom lining bricks and the lower flue bricks (611) are alumina bubble bricks, high-alumina heat-insulating bricks, mullite heat-insulating bricks or light clay heat-insulating bricks.

4. The kiln with the heating section having the lower smoke exhaust function according to claim 2, wherein the lower flue support foundation (66) comprises a lower flue support bottom brick (661) and a waterproof plate (662), the lower flue support bottom brick (661) is located below the waterproof plate (662) and laid on the upward side of the bottom of the lower flue protective shell (64) in a bricklayed manner, the waterproof plate (662) is disposed on the upward side of the lower flue brick (611), and the lower flue (61), the lower flue left heat insulation plate (62) and the lower flue right heat insulation plate (63) are supported on the waterproof plate (662).

5. The kiln with the heating section having the lower smoke exhaust function as claimed in claim 2, wherein the lower flue left heat insulation plate (62) and the lower flue right heat insulation plate (63) are aluminum silicate heat insulation plates.

6. The kiln with the heating section having the lower smoke discharging function according to the claim 2 or 4, characterized in that the lower smoke discharging flue casing (64) is a carbon steel casing.

7. The kiln with the heating section having the lower smoke discharging function according to claim 1, wherein sagger conveyor rollers (5b), an upper heating rod (5c), a lower heating rod (5d) and a shielding gas introducing pipe (5e) for introducing shielding gas into the heating section hearth (5a) are distributed at intervals in the length direction of the heating section hearth (5a), both ends of the sagger conveyor rollers (5b) are rotatably supported on the heating section hearth (1) after respectively passing through the pair of heating section hearth liners (3) and the heating section hearth (1), while the middle of the sagger conveyor rollers (5b) is located in the heating section hearth (5a), both ends of the upper heating rod (5c) and the lower heating rod (5d) are protruded out of the heating section hearth (1) after respectively passing through the pair of heating section hearth liners (3), while the middle is located in the heating section hearth (5a), the two ends of the protective gas inlet pipe (5e) also extend out of the furnace shell (1) of the temperature rising section after respectively penetrating through the pair of furnace wall linings (3) of the temperature rising section, and the middle part of the protective gas inlet pipe is positioned in the hearth (5a) of the temperature rising section; the pair of temperature rise section furnace wall linings (3) respectively comprise a heat preservation plate wall (31) and a brickwork wall (32), the heat preservation plate wall (31) is formed by combining a plurality of furnace wall lining heat preservation plates and is positioned between the brickwork wall (32) and the length direction of the cavity wall of the furnace shell cavity of the temperature rise section furnace shell (1), the bottom of the heat preservation plate wall (31) is supported at the edge part of the temperature rise section furnace bottom lining (2), the brickwork wall (32) is formed by brickwork, the bottom of the brickwork wall (32) is also supported at the edge part of the temperature rise section furnace bottom lining (2), the upper parts of the heat preservation plate wall (31) and the brickwork wall (32) extend upwards, and two sides of the temperature rise section furnace top (4) in the length direction are simultaneously supported at the upper parts of the heat preservation plate 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 brickwork wall (32), and extend out of one side of the furnace shell (1) of the temperature rising section 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) of the temperature rising section and are rotatably supported on the outer wall of the furnace shell (1) of the temperature rising section; the position of the protective gas introducing pipe (5e) in the temperature rising section hearth (5a) is positioned below the upper heating rod (5 c).

8. The kiln with the temperature rising section having the lower smoke discharging function as claimed in claim 7, wherein the furnace wall lining heat insulation plate is an aluminum silicate plate; 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. The kiln with a heating section having a lower smoke discharge function according to claim 7, characterized in that the upper heating rod (5c) is provided in an upper heating rod sheath 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 kiln with the heating section having the lower smoke discharge function according to claim 7, wherein an inlet pipe gas injection hole (5k) for injecting the shielding gas into the heating section hearth (5a) is formed at one side of the shielding gas inlet pipe (5e) facing downward at an interval; the protective gas is nitrogen, hydrogen or inert gas; the furnace shell (1) at the temperature-raising section is a carbon steel furnace shell.

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