CN114838588A - Double-furnace-chamber kiln - Google Patents
Double-furnace-chamber kiln Download PDFInfo
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- CN114838588A CN114838588A CN202210304459.5A CN202210304459A CN114838588A CN 114838588 A CN114838588 A CN 114838588A CN 202210304459 A CN202210304459 A CN 202210304459A CN 114838588 A CN114838588 A CN 114838588A
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- 238000000605 extraction Methods 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000005245 sintering Methods 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims description 15
- 230000009977 dual effect Effects 0.000 claims 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims 1
- 229910001928 zirconium oxide Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 27
- 239000007789 gas Substances 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
- F27B9/028—Multi-chamber type furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/243—Endless-strand conveyor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/122—Preheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/124—Cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Tunnel Furnaces (AREA)
Abstract
The utility model provides a double-furnace chamber kiln, includes frame and furnace body, and the furnace body is installed in the frame, its characterized in that: the furnace body is provided with a first furnace chamber and a second furnace chamber which are arranged side by side from left to right, the first furnace chamber comprises a preheating section, a sintering section and a cooling section which are sequentially arranged from front to back, the second furnace chamber comprises a preheating section, a sintering section and a cooling section which are sequentially arranged from back to front, the cooling section of the first furnace chamber is communicated with the preheating section of the second furnace chamber, the cooling section of the second furnace chamber is communicated with the preheating section of the first furnace chamber, the furnace wall where the preheating section of the first furnace chamber is located is provided with at least one first air extraction opening, each first air extraction opening is communicated with the preheating section of the first furnace chamber, the furnace wall where the preheating section of the second furnace chamber is located is provided with at least one second air extraction opening, and each second air extraction opening is communicated with the preheating section of the second furnace chamber; each first air exhaust opening and each second air exhaust opening are communicated with an air inlet of the exhaust fan. The kiln with double furnace chambers can fully utilize heat energy, is favorable for reducing energy consumption and production cost.
Description
Technical Field
The invention relates to electronic component production equipment, in particular to a kiln with double furnace chambers.
Background
In the manufacture of ceramic dielectric chips (e.g., varistor chips, ceramic capacitor dielectric chips, etc.), after pressing a green ceramic sheet, the green ceramic sheet is typically placed in a sagger and then sintered in a kiln.
Most of existing kilns are channel-type kilns, which comprise a rack, a conveying device and a furnace body, wherein the conveying device and the furnace body are both installed on the rack, the conveying device penetrates through a furnace chamber of the furnace body from front to back, the furnace chamber comprises a preheating section, a sintering section and a cooling section (the preheating section and the sintering section are respectively provided with a heating device), the preheating section, the sintering section and the cooling section are sequentially arranged from front to back along the conveying direction of the conveying device, the front end of the furnace chamber is provided with an inlet, and the rear end of the furnace chamber is provided with an outlet. The sagger with ceramic green sheets enters the preheating section from the front end of the furnace chamber, enters the sintering section after being preheated by the preheating section, is heated at high temperature to sinter the ceramic green sheets, is cooled by the cooling section, and is finally removed out of the furnace body from the rear end of the furnace chamber. At present, in a cooling section, energy waste is caused due to the loss of heat energy dissipated when the saggars and the ceramic green sheets are cooled, the energy consumption is high, and the production cost is increased.
Disclosure of Invention
The invention aims to provide a double-furnace-chamber kiln which can fully utilize heat energy and is beneficial to reducing energy consumption and production cost. The technical scheme is as follows:
the utility model provides a double-furnace chamber kiln, includes frame and furnace body, and the furnace body is installed in the frame, its characterized in that: the double-furnace-cavity kiln also comprises an exhaust fan; the furnace body is provided with a first furnace chamber and a second furnace chamber which are arranged side by side from left to right, the first furnace chamber comprises a preheating section, a sintering section and a cooling section which are sequentially arranged from front to back, the second furnace chamber comprises a preheating section, a sintering section and a cooling section which are sequentially arranged from back to front, the cooling section of the first furnace chamber is communicated with the preheating section of the second furnace chamber, the cooling section of the second furnace chamber is communicated with the preheating section of the first furnace chamber, the furnace wall where the preheating section of the first furnace chamber is located is provided with at least one first air extraction opening, each first air extraction opening is communicated with the preheating section of the first furnace chamber, the furnace wall where the preheating section of the second furnace chamber is located is provided with at least one second air extraction opening, and each second air extraction opening is communicated with the preheating section of the second furnace chamber; each first air exhaust opening and each second air exhaust opening are communicated with an air inlet of the exhaust fan; the rack is provided with a first conveying device which penetrates through the first furnace chamber from front to back and a second conveying device which penetrates through the second furnace chamber from back to front.
In the above-mentioned dual-chamber kiln, the preheating section of the first chamber, the sintering section of the first chamber, the preheating section of the second chamber, and the sintering section of the second chamber are usually provided with heating devices respectively, which can be used for heating the ceramic green sheets passing through. The sagger with the ceramic green sheets is conveyed into the first furnace chamber from front to back by the first conveying device, enters the sintering section for sintering at high temperature after being preheated by the preheating section, is cooled in the cooling section, and is finally moved out of the furnace body from the back end of the first furnace chamber. The sagger with the ceramic green sheets is conveyed into the second furnace chamber from back to front by the second conveying device, enters the sintering section for sintering at high temperature after being preheated by the preheating section, is cooled in the cooling section, and is finally moved out of the furnace body from the front end of the second furnace chamber. In the preheating section of the first furnace chamber, the exhaust fan exhausts air from the preheating section of the first furnace chamber through each first exhaust opening to form negative pressure, heat energy dissipated by the saggars and the ceramic green sheets in the cooling section of the second furnace chamber is introduced, hot air flow is formed in the preheating section of the first furnace chamber, and a heating device in the preheating section is assisted to preheat the saggars and the ceramic green sheets in the preheating section of the first furnace chamber, so that the heat energy is fully utilized, and meanwhile, the energy consumption of the preheating section of the first furnace chamber is reduced (the power of the heating device in the preheating section of the first furnace chamber can be reduced); similarly, in the preheating section of the second furnace chamber, the exhaust fan exhausts air from the preheating section of the second furnace chamber through each second exhaust opening to form negative pressure, heat energy dissipated by the saggars and the ceramic green sheets in the cooling section of the first furnace chamber is introduced, hot air flow is formed in the preheating section of the second furnace chamber, and the heating device in the auxiliary preheating section preheats the saggars and the ceramic green sheets in the preheating section of the second furnace chamber, so that the heat energy is fully utilized, and the energy consumption of the preheating section of the second furnace chamber is reduced (the power of the heating device in the preheating section of the second furnace chamber can be reduced).
In a preferred scheme, the double-furnace-cavity kiln further comprises a first gas collecting pipe, a plurality of first exhaust pipes, a second gas collecting pipe and a plurality of second exhaust pipes; a plurality of first air extraction openings are formed in the furnace wall where the preheating section of the first furnace chamber is located, the first air extraction openings are the same in number as the first air extraction pipes and correspond to the first air extraction pipes one by one, the first air extraction openings are communicated with the first gas collecting pipes through the corresponding first air extraction pipes, the first gas collecting pipes are communicated with the air inlet of the exhaust fan, and each first air extraction pipe is provided with a switch valve; the furnace wall where the preheating section of the second furnace chamber is located is provided with a plurality of second air exhaust openings, the number of the second air exhaust openings is the same as that of the second air exhaust pipes, the second air exhaust openings correspond to the second air exhaust pipes in a one-to-one mode, the second air exhaust openings are communicated with the second air collecting pipes through the corresponding second air exhaust pipes, the second air collecting pipes are communicated with the air inlet of the air exhauster, and each second air exhaust pipe is provided with a switch valve. The on-off of the first exhaust tube or the second exhaust tube where the switch valves are respectively arranged can be controlled by the switch valves, so that the corresponding first exhaust tube or the second exhaust tube can be switched on or off by controlling the on-off of the switch valves in the actual production process, and whether the corresponding first exhaust opening or the corresponding second exhaust opening is exhausted from the preheating section or not is controlled, so that the exhaust position and the exhaust amount are adjusted, the flow direction and the flow of hot air in the preheating section are adjusted, and a better preheating effect is realized.
In a more preferable scheme, the first air exhaust openings are sequentially arranged from front to back, and the second air exhaust openings are sequentially arranged from back to front.
The air outlet of the exhaust fan can be communicated with the outside or waste gas treatment equipment through an exhaust pipe, and the gas extracted from the preheating section is discharged to the outside or waste gas treatment equipment.
In a preferred scheme, the furnace body comprises a top wall, a bottom wall, a left side wall, a right side wall and a middle partition wall, wherein the left edge of the top wall and the left edge of the bottom wall are respectively connected with the upper edge and the lower edge of the left side wall; the top wall, the bottom wall, the left side wall and the middle partition wall jointly enclose a first furnace chamber, and the top wall, the bottom wall, the right side wall and the middle partition wall jointly enclose a second furnace chamber; two air vents are arranged on the middle partition wall, wherein the first air vent is used for communicating the preheating section of the first furnace chamber with the cooling section of the second furnace chamber, and the second air vent is used for communicating the preheating section of the second furnace chamber with the cooling section of the first furnace chamber.
In a more preferable scheme, each first extraction opening is arranged on the left side wall of the furnace body and corresponds to the first air vent; each second extraction opening is arranged on the right side wall of the furnace body and corresponds to the second air vent. Thus, when the exhaust fan is operated, a transverse hot gas flow can be formed in the preheating section, and the hot gas flow can perform more sufficient heat exchange with the saggar and the ceramic green sheets.
In a preferable scheme, the first conveying device comprises a first pushing mechanism and a first conveying belt, the first conveying belt comprises a plurality of first transverse supporting rollers which are sequentially arranged from front to back, each first transverse supporting roller can be rotatably arranged on the rack or the furnace body, and the power output end of the first pushing mechanism faces backwards and corresponds to the front end of the first conveying belt; the second conveying device comprises a second pushing mechanism and a second conveying belt, the second conveying belt comprises a plurality of second transverse supporting rollers which are sequentially arranged from back to front, each second transverse supporting roller is rotatably arranged on the rack or the furnace body, and the power output end of the second pushing mechanism faces forwards and corresponds to the rear end position of the second conveying belt. The first and second lateral supporting rollers can be made of high-temperature-resistant materials (such as alumina or zirconia). The first conveying belt and the second conveying belt can be provided with a plurality of supporting plates (the supporting plates are made of refractory materials and can resist high temperature) which are sequentially arranged along the conveying direction. On a first conveyor belt, a supporting plate is arranged on a first transverse supporting roller, a sagger provided with a ceramic green sheet is arranged on the supporting plate, a first pushing mechanism pushes the supporting plate on the first conveyor belt and the sagger on the first conveyor belt to move in a stepping mode, adjacent supporting plates on the first conveyor belt are in close contact with each other, and the front supporting plate moves under the pushing of the rear supporting plate; similarly, on the second conveyor belt, the pallets are placed on the second transverse supporting roller, saggars filled with ceramic green sheets are placed on the pallets, the second pushing mechanism pushes the pallets on the second conveyor belt and the saggars on the pallets to move in a stepping mode, adjacent pallets on the second conveyor belt are in close contact with each other, and the front pallets move under the pushing of the rear pallets.
The first pushing mechanism and the second pushing mechanism respectively comprise a hydraulic cylinder and a push plate, the cylinder body of the hydraulic cylinder is fixedly arranged on the rack, and the push plate is arranged at the tail end of the piston rod of the hydraulic cylinder; the piston rod of the hydraulic cylinder in the first pushing mechanism faces backwards, and the piston rod of the hydraulic cylinder in the second pushing mechanism faces forwards. The position of the push plate is switched by utilizing the extension and retraction of a piston rod of the hydraulic cylinder, so that the push plate can push the supporting plate and the saggar on the supporting plate to move in a stepping mode.
The double-furnace-chamber kiln can fully utilize heat energy, is beneficial to reducing energy consumption (can save energy by 30-50 percent compared with two traditional kilns with the same production scale), and reduces the production cost. Moreover, compared with two independent traditional kilns, the double-furnace-chamber kiln has a more compact and reasonable structure.
Drawings
FIG. 1 is a schematic structural view (in a top view) of a kiln with two furnace chambers according to a preferred embodiment of the present invention;
FIG. 2 is a sectional view A-A of the furnace body of FIG. 1;
fig. 3 is a sectional view B-B of the furnace body of fig. 1.
Detailed Description
As shown in fig. 1-3, the double-chamber kiln comprises a frame (not shown), a kiln body 1 and an exhaust fan 2; the furnace body 1 is arranged on a rack, the furnace body 1 is provided with a first furnace chamber 11 and a second furnace chamber 12 which are arranged side by side from left to right, the first furnace chamber 11 comprises a preheating section 111, a sintering section 112 and a cooling section 113 which are sequentially arranged from front to back, the second furnace chamber 12 comprises a preheating section 121, a sintering section 122 and a cooling section 123 which are sequentially arranged from back to front, the cooling section 113 of the first furnace chamber is communicated with the preheating section 121 of the second furnace chamber, the cooling section 123 of the second furnace chamber is communicated with the preheating section 111 of the first furnace chamber, a plurality of (e.g. three) first air extraction openings 114 are arranged on the furnace wall where the preheating section 111 of the first furnace chamber is positioned, each first air extraction opening 114 is communicated with the preheating section 111 of the first furnace chamber, a plurality of (e.g. three) second air extraction openings 124 are arranged on the furnace wall where the preheating section 121 of the second furnace chamber is positioned, and each second air extraction opening 124 is communicated with the preheating section 121 of the second furnace chamber; each first suction opening 114 and each second suction opening 124 are communicated with an air inlet of the exhaust fan 2; the frame is provided with a first conveyor 3 passing through the first furnace chamber 11 from front to back and a second conveyor 4 passing through the second furnace chamber 12 from back to front.
The kiln with double furnace chambers of the embodiment further comprises a first gas collecting pipe 5, a plurality of first exhaust pipes 115, a second gas collecting pipe 6 and a plurality of second exhaust pipes 125; the first air extraction openings 114 are the same in number and correspond to the first air extraction pipes 115 one by one, the first air extraction openings 114 are communicated with the first gas collecting pipe 5 through the corresponding first air extraction pipes 115, the first gas collecting pipe 5 is communicated with an air inlet of the exhaust fan 2, and each first air extraction pipe 115 is provided with a switch valve 116; the second air exhaust openings 124 are the same in number as the second air exhaust pipes 125 and are in one-to-one correspondence with each other, the second air exhaust openings 124 are communicated with the second gas collecting pipe 6 through the corresponding second air exhaust pipes 125, the second gas collecting pipe 6 is communicated with the air inlet of the exhaust fan 2, and each second air exhaust pipe 125 is provided with a switch valve 126. The first pumping ports 114 are sequentially arranged from front to back, and the second pumping ports 124 are sequentially arranged from back to front.
The furnace body 1 comprises a top wall 13, a bottom wall 14, a left side wall 15, a right side wall 16 and a middle partition wall 17, wherein the left edge of the top wall 13 and the left edge of the bottom wall 14 are respectively connected with the upper edge and the lower edge of the left side wall 15, the right edge of the top wall 13 and the right edge of the bottom wall 14 are respectively connected with the upper edge and the lower edge of the right side wall 16, the middle partition wall 17 is positioned between the left side wall 15 and the right side wall 16, and the upper edge and the lower edge of the middle partition wall 17 are respectively connected with the top wall 13 and the bottom wall 14 (the upper edge and the lower edge of the middle partition wall 17 are respectively connected with the middle part of the top wall 13 and the middle part of the bottom wall 14); the top wall 13, the bottom wall 14, the left side wall 15 and the middle partition wall 17 together enclose a first oven cavity 11, and the top wall 13, the bottom wall 14, the right side wall 16 and the middle partition wall 17 together enclose a second oven cavity 12; two ventilation openings are provided in the intermediate partition wall 17, wherein a first ventilation opening 18 connects the preheating section 111 of the first furnace chamber to the cooling section 123 of the second furnace chamber, and a second ventilation opening 19 connects the preheating section 121 of the second furnace chamber to the cooling section 113 of the first furnace chamber. The outer sides of the top wall 13, the bottom wall 14, the left side wall 15 and the right side wall 16 can be coated with a heat insulation material layer to reduce heat loss and prevent scalding.
Each first extraction opening 114 is arranged on the left side wall 15 of the furnace body and corresponds to the first air vent 18 in position; each second extraction opening 124 is arranged on the right side wall 16 of the furnace body and corresponds to the second air vent 19.
The first conveying device 3 comprises a first pushing mechanism 31 and a first conveying belt 32, the first conveying belt 32 comprises a plurality of first transverse supporting rollers which are sequentially arranged from front to back, each first transverse supporting roller can be rotatably arranged on the rack or the furnace body 1, and the power output end of the first pushing mechanism 31 faces back and corresponds to the front end of the first conveying belt 32; the second conveying device 4 comprises a second pushing mechanism 41 and a second conveying belt 42, the second conveying belt 42 comprises a plurality of second transverse supporting rollers which are sequentially arranged from back to front, each second transverse supporting roller is rotatably mounted on the rack or the furnace body 1, and the power output end of the second pushing mechanism 42 faces forward and corresponds to the rear end of the second conveying belt 42. The first and second lateral supporting rollers can be made of high-temperature-resistant materials (such as alumina or zirconia).
The first pushing mechanism and the second pushing mechanism both comprise a hydraulic cylinder 311 (411) and a push plate 312 (412), the cylinder body of the hydraulic cylinder 311 (411) is fixedly arranged on the frame, and the push plate 312 (412) is arranged at the tail end of the piston rod of the hydraulic cylinder 311 (411); the piston rod of the hydraulic cylinder 311 in the first pushing mechanism 31 faces backward, and the piston rod of the hydraulic cylinder 411 in the second pushing mechanism 41 faces forward.
In the above-mentioned dual-chamber kiln, the preheating section of the first chamber, the sintering section of the first chamber, the preheating section of the second chamber, and the sintering section of the second chamber are usually provided with heating devices respectively, which can be used for heating the ceramic green sheets passing through.
The working principle of the double-furnace-cavity kiln is briefly described as follows:
the sagger with the ceramic green sheets is driven by the first conveying device 3 to be conveyed from front to back in the first furnace cavity 11, enters the first furnace cavity 11 from the front end of the first furnace cavity 11 under the conveying of the first conveying device 3, enters the sintering section 112 to be heated at high temperature to sinter the ceramic green sheets after being preheated by the preheating section 111, is cooled by the cooling section 113, and is moved out of the furnace body from the rear end of the first furnace cavity 11. The sagger with the ceramic green sheets is driven by the second conveying device 4 to be conveyed from back to front in the second furnace chamber 12, enters the second furnace chamber 12 from the back end of the second furnace chamber 12 under the conveying of the second conveying device 4, enters the sintering section 122 to be heated at high temperature after being preheated by the preheating section 121 so as to sinter the ceramic green sheets, is cooled by the cooling section 123, and is finally moved out of the furnace body from the front end of the second furnace chamber 12. In the preheating section 111 of the first furnace chamber, the exhaust fan 2 exhausts air from the preheating section 111 of the first furnace chamber through each first exhaust opening 114 to form negative pressure, heat energy dissipated by the saggars and the ceramic green sheets in the cooling section 123 of the second furnace chamber is introduced, hot air is formed in the preheating section 111 of the first furnace chamber, and a heating device in the auxiliary preheating section 111 preheats the saggars and the ceramic green sheets in the preheating section 111 of the first furnace chamber, so that the heat energy is fully utilized, and meanwhile, the energy consumption of the preheating section 111 of the first furnace chamber is reduced (the power of the heating device in the preheating section of the first furnace chamber can be reduced); similarly, in the preheating section 121 of the second furnace chamber, the exhaust fan 2 exhausts air from the preheating section 121 of the second furnace chamber through each second exhaust opening 124 to form negative pressure, so as to introduce heat energy dissipated by the saggars and the ceramic green sheets in the cooling section 113 of the first furnace chamber, form hot air in the preheating section 121 of the second furnace chamber, and assist the heating device in the preheating section 121 to preheat the saggars and the ceramic green sheets in the preheating section 121 of the second furnace chamber, thereby fully utilizing the heat energy and reducing the energy consumption of the preheating section 121 of the second furnace chamber (the power of the heating device in the preheating section of the second furnace chamber can be reduced).
Each switch valve 116, 126 can control the on-off of the first air extraction pipe 115 or the second air extraction pipe 126, thus, in the actual production process, the corresponding first air extraction pipe 115 or the second air extraction pipe 125 can be switched on or off by controlling the on-off of each switch valve 116, 126, so as to control whether the corresponding first air extraction opening 114 or the corresponding second air extraction opening 124 extracts air from the preheating section, thereby adjusting the air extraction position and the air extraction amount, further adjusting the flow direction and the flow rate of hot air in the preheating section 111 or the preheating section 121, and realizing better preheating effect.
The first conveyor 32 and the second conveyor 42 may be provided with a plurality of pallets (made of a refractory material, which can resist high temperature) arranged in this order along the conveying direction. On the first conveyor belt 32, the pallet is placed on the first transverse supporting roller, the sagger loaded with the ceramic green sheet is placed on the pallet, the first pushing mechanism 31 pushes the pallet on the first conveyor belt 32 and the sagger thereon to move in a stepping manner (by using the extension and contraction of the piston rod of the hydraulic cylinder 311, the position of the pushing plate 312 is switched, so that the pushing plate 312 can push the pallet and the sagger thereon to move in a stepping manner), the adjacent pallets on the first conveyor belt 32 are in close contact with each other, and the front pallet moves under the pushing of the rear pallet; similarly, on the second conveyor belt 42, the pallet is placed on the second horizontal supporting roller, the sagger loaded with the ceramic green sheet is placed on the pallet, the second pushing mechanism 41 pushes the pallet on the second conveyor belt 42 and the sagger thereon to move in a stepwise manner (by using the extension and contraction of the piston rod of the hydraulic cylinder 411, the position of the pushing plate 412 is switched so that the pushing plate 412 can push the pallet and the sagger thereon to move in a stepwise manner), adjacent pallets on the second conveyor belt 42 are in close contact with each other, and the front pallet moves under the pushing of the rear pallet.
The air outlet of the exhaust fan 2 can be communicated with the outside or waste gas treatment equipment through an exhaust pipe 7, and the gas extracted from the preheating sections 111 and 121 is discharged to the outside or waste gas treatment equipment.
Claims (8)
1. The utility model provides a double-furnace chamber kiln, includes frame and furnace body, and the furnace body is installed in the frame, its characterized in that: the double-furnace-cavity kiln also comprises an exhaust fan; the furnace body is provided with a first furnace chamber and a second furnace chamber which are arranged side by side from left to right, the first furnace chamber comprises a preheating section, a sintering section and a cooling section which are sequentially arranged from front to back, the second furnace chamber comprises a preheating section, a sintering section and a cooling section which are sequentially arranged from back to front, the cooling section of the first furnace chamber is communicated with the preheating section of the second furnace chamber, the cooling section of the second furnace chamber is communicated with the preheating section of the first furnace chamber, the furnace wall where the preheating section of the first furnace chamber is located is provided with at least one first air extraction opening, each first air extraction opening is communicated with the preheating section of the first furnace chamber, the furnace wall where the preheating section of the second furnace chamber is located is provided with at least one second air extraction opening, and each second air extraction opening is communicated with the preheating section of the second furnace chamber; each first air exhaust opening and each second air exhaust opening are communicated with an air inlet of the exhaust fan; the rack is provided with a first conveying device which penetrates through the first furnace chamber from front to back and a second conveying device which penetrates through the second furnace chamber from back to front.
2. A dual chamber kiln as claimed in claim 1, wherein: the double-furnace-cavity kiln further comprises a first gas collecting pipe, a plurality of first exhaust pipes, a second gas collecting pipe and a plurality of second exhaust pipes; a plurality of first air extraction openings are formed in the furnace wall where the preheating section of the first furnace chamber is located, the first air extraction openings are the same in number as the first air extraction pipes and correspond to the first air extraction pipes one by one, the first air extraction openings are communicated with the first gas collecting pipes through the corresponding first air extraction pipes, the first gas collecting pipes are communicated with the air inlet of the exhaust fan, and each first air extraction pipe is provided with a switch valve; the furnace wall where the preheating section of the second furnace chamber is located is provided with a plurality of second air exhaust openings, the number of the second air exhaust openings is the same as that of the second air exhaust pipes, the second air exhaust openings correspond to the second air exhaust pipes in a one-to-one mode, the second air exhaust openings are communicated with the second air collecting pipes through the corresponding second air exhaust pipes, the second air collecting pipes are communicated with the air inlet of the air exhauster, and each second air exhaust pipe is provided with a switch valve.
3. A dual chamber kiln as claimed in claim 2, wherein: the first air exhaust openings are sequentially arranged from front to back, and the second air exhaust openings are sequentially arranged from back to front.
4. A dual chamber kiln according to any one of claims 1 to 3, wherein: the furnace body comprises a top wall, a bottom wall, a left side wall, a right side wall and a middle partition wall, wherein the left edge of the top wall and the left edge of the bottom wall are respectively connected with the upper edge and the lower edge of the left side wall; the top wall, the bottom wall, the left side wall and the middle partition wall jointly enclose a first furnace chamber, and the top wall, the bottom wall, the right side wall and the middle partition wall jointly enclose a second furnace chamber; two air vents are arranged on the middle partition wall, wherein the first air vent is used for communicating the preheating section of the first furnace chamber with the cooling section of the second furnace chamber, and the second air vent is used for communicating the preheating section of the second furnace chamber with the cooling section of the first furnace chamber.
5. A dual chamber kiln according to claim 4, wherein: each first air extraction opening is arranged on the left side wall of the furnace body and corresponds to the first air vent; each second extraction opening is arranged on the right side wall of the furnace body and corresponds to the second air vent.
6. A dual chamber kiln according to any one of claims 1 to 3, wherein: the first conveying device comprises a first pushing mechanism and a first conveying belt, the first conveying belt comprises a plurality of first transverse supporting rollers which are sequentially arranged from front to back, each first transverse supporting roller can be rotatably arranged on the rack or the furnace body, and the power output end of the first pushing mechanism faces backwards and corresponds to the front end of the first conveying belt; the second conveying device comprises a second pushing mechanism and a second conveying belt, the second conveying belt comprises a plurality of second transverse supporting rollers which are sequentially arranged from back to front, each second transverse supporting roller is rotatably arranged on the rack or the furnace body, and the power output end of the second pushing mechanism faces forwards and corresponds to the rear end position of the second conveying belt.
7. A dual chamber kiln according to claim 6, wherein: the first transverse supporting roller and the second transverse supporting roller are made of aluminum oxide or zirconium oxide.
8. A dual chamber kiln according to claim 6, wherein: the first pushing mechanism and the second pushing mechanism both comprise a hydraulic cylinder and a push plate, the cylinder body of the hydraulic cylinder is fixedly arranged on the rack, and the push plate is arranged at the tail end of the piston rod of the hydraulic cylinder; the piston rod of the hydraulic cylinder in the first pushing mechanism faces backwards, and the piston rod of the hydraulic cylinder in the second pushing mechanism faces forwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210304459.5A CN114838588A (en) | 2022-03-26 | 2022-03-26 | Double-furnace-chamber kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210304459.5A CN114838588A (en) | 2022-03-26 | 2022-03-26 | Double-furnace-chamber kiln |
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| CN114838588A true CN114838588A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210304459.5A Pending CN114838588A (en) | 2022-03-26 | 2022-03-26 | Double-furnace-chamber kiln |
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| WO2009068505A1 (en) * | 2007-11-26 | 2009-06-04 | Umicore Ag & Co. Kg | Tunnel furnace for the temperature treatment of goods |
| CN203518561U (en) * | 2013-06-09 | 2014-04-02 | 易能（马鞍山）大气治理科技有限公司 | Calcining apparatus for cellular catalyst sinter |
| CN108662901A (en) * | 2018-06-04 | 2018-10-16 | 新化县新园电子陶瓷有限公司 | Sintering kiln for ceramics |
| CN208124857U (en) * | 2018-04-08 | 2018-11-20 | 肇庆市将军陶瓷有限公司 | A kind of Production of Ceramics kiln |
| CN109028938A (en) * | 2018-05-30 | 2018-12-18 | 中国电子科技集团公司第四十八研究所 | A kind of double-layer seal roller furnace |
| CN113983810A (en) * | 2021-11-12 | 2022-01-28 | 成都朗辰电子有限公司 | Opposite-pushing type energy-saving kiln |
| CN216115333U (en) * | 2021-11-12 | 2022-03-22 | 成都朗辰电子有限公司 | Opposite-pushing type energy-saving kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009068505A1 (en) * | 2007-11-26 | 2009-06-04 | Umicore Ag & Co. Kg | Tunnel furnace for the temperature treatment of goods |
| CN203518561U (en) * | 2013-06-09 | 2014-04-02 | 易能（马鞍山）大气治理科技有限公司 | Calcining apparatus for cellular catalyst sinter |
| CN208124857U (en) * | 2018-04-08 | 2018-11-20 | 肇庆市将军陶瓷有限公司 | A kind of Production of Ceramics kiln |
| CN109028938A (en) * | 2018-05-30 | 2018-12-18 | 中国电子科技集团公司第四十八研究所 | A kind of double-layer seal roller furnace |
| CN108662901A (en) * | 2018-06-04 | 2018-10-16 | 新化县新园电子陶瓷有限公司 | Sintering kiln for ceramics |
| CN113983810A (en) * | 2021-11-12 | 2022-01-28 | 成都朗辰电子有限公司 | Opposite-pushing type energy-saving kiln |
| CN216115333U (en) * | 2021-11-12 | 2022-03-22 | 成都朗辰电子有限公司 | Opposite-pushing type energy-saving kiln |
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