CN112629252A - Kiln - Google Patents
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- CN112629252A CN112629252A CN202011557746.4A CN202011557746A CN112629252A CN 112629252 A CN112629252 A CN 112629252A CN 202011557746 A CN202011557746 A CN 202011557746A CN 112629252 A CN112629252 A CN 112629252A
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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
- F27B9/26—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 on or in trucks, sleds, or containers
- F27B9/262—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 on or in trucks, sleds, or containers on or in trucks
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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
- F27B9/12—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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a kiln which comprises a kiln body, a lifting system, a burning bearing plate and a kiln car, wherein the lifting system is arranged at the bottom of the kiln body, the burning bearing plate is arranged at the lower part of the kiln body, the lifting system is used for driving the burning bearing plate to move up and down, the kiln car is used for placing the burning bearing plate, the kiln further comprises a first cooling circulation system, the first cooling circulation system comprises a first circulating fan, a ventilation pipe and a first exhaust pipe, the first circulating fan, the ventilation pipe and the first exhaust pipe are arranged outside the kiln body, the first exhaust pipe is communicated with a hearth, the first circulating fan is used for introducing gas in the first exhaust pipe into the ventilation pipe, and the first circulating fan is communicated with the hearth. The kiln in the invention can ensure that the temperature and the atmosphere in the hearth are uniformly distributed.
Description
Technical Field
The invention relates to the technical field of magnetic material sintering, in particular to a kiln.
Background
The nitrogen protection electric firing kiln is key equipment for producing magnetic materials. In the using process, high requirements are put forward on firing equipment due to the requirements of internal quality indexes (such as magnetic permeability, frequency spectrum, impedance, Curie temperature, Q value, two-peak value, winding ratio and the like) and appearance quality (such as cracking, deformation, size expansion and shrinkage, bright spots, glomerocryst, density and other firing defects) of a fired product.
At present, most of magnetic core sintering kilns adopt electric heating sintering because electric energy is clean and environment-friendly and does not contain impurities to have less influence on product characteristics. Generally, most of heating elements in the electrically heated kiln are silicon carbide rods or silicon molybdenum rods, however, due to the influence of the material characteristics and the manufacturing process of the silicon carbide rods and the influence of the three-phase power in a power supply system, the heating performance of the silicon carbide rods in the operation process is influenced, the temperature deviation in the operation process of the kiln is excessively and unevenly distributed, and the product performance is influenced. Although the circulating system is added in the current novel kiln, the problems are not greatly improved due to the defects of the design.
Therefore, there is a need to design a new kiln to provide a uniform temperature distribution during operation of the kiln.
Disclosure of Invention
The invention aims to provide a kiln to solve the problem that the temperature distribution of the existing kiln is not uniform in the operation process.
In order to solve the technical problems, the invention provides a kiln, which comprises a kiln body, a lifting system, a burning bearing plate and a kiln car, wherein the lifting system is arranged at the bottom of the kiln body, the burning bearing plate is arranged at the lower part of the kiln body, the lifting system is used for driving the burning bearing plate to move up and down, the kiln car is used for placing the burning bearing plate, the kiln further comprises a first cooling circulation system, the first cooling circulation system comprises a first circulating fan, a ventilation pipe and a first exhaust pipe, the first circulating fan, the ventilation pipe and the first exhaust pipe are arranged outside the kiln body, the first exhaust pipe is communicated with a hearth, the first circulating fan is used for introducing gas in the first exhaust pipe into the ventilation pipe, and the ventilation pipe is communicated with the hearth.
Optionally, the ventilation pipes are symmetrically arranged about the furnace body.
Optionally, the ventilation pipe includes shell, heat preservation, concrete layer and inner tube, the heat preservation is located the shell with between the inner tube, the concrete layer is located the heat preservation with between the inner tube.
Optionally, the first cooling circulation system further includes an air outlet device, and the ventilation pipe is communicated with the furnace chamber through the air outlet device.
Optionally, the air outlet device includes an air outlet body, a cavity is provided in the air outlet body, an air outlet pipe is provided on one side of the air outlet body, a circulating air hole is provided on the other side of the air outlet body, one end of the air outlet pipe is communicated with the cavity, the other end of the air outlet pipe is communicated with the ventilation pipe, one end of the circulating air hole is communicated with the cavity, and the other end of the circulating air hole is communicated with the furnace chamber.
Optionally, the first cooling circulation system further includes an air box, and the ventilation pipe is communicated with the air outlet pipe of the air outlet device through the air box.
Optionally, the kiln further comprises a second cooling circulation system, the second cooling circulation system comprises a second exhaust pipe, a second circulating fan, a cooling tower and a circulating air pipe, the second circulating fan, the cooling tower, the circulating air pipe and the second exhaust pipe are arranged outside the kiln body, the second exhaust pipe is communicated with the hearth, the second circulating fan is used for introducing gas in the second exhaust pipe into the cooling tower, the cooling tower is communicated with one side of the circulating air pipe, and the other side of the circulating air pipe is communicated with the hearth.
Optionally, the cross section of the cooling air duct is rectangular.
Optionally, the second cooling circulation system further includes an air supply pipe, the air supply pipe is disposed in the furnace, two ends of the air supply pipe are respectively connected with the circulating air pipe, and the air supply pipe is communicated with the furnace.
Optionally, the air supply pipe comprises an air supply pipe body and air supply holes formed in the air supply pipe body, the air supply holes are distributed on the air supply pipe at equal intervals, and the aperture of each air supply hole is gradually reduced from the middle of the air supply pipe to two ends of the air supply pipe.
The kiln provided by the invention has the following beneficial effects:
because first cooling circulation system includes first circulating fan, ventilation pipe and first exhaust pipe, first circulating fan, ventilation pipe and first exhaust pipe set up outside the furnace body, first exhaust pipe with furnace intercommunication, first circulating fan is used for introducing the gas in the first exhaust pipe the ventilation pipe, the ventilation pipe with furnace intercommunication, consequently during first cooling circulation system work, first cooling circulation system can introduce first exhaust pipe with the gas in the furnace through first circulating fan to make the gas flow through and flow into first circulating fan behind the first exhaust pipe, flow into the ventilation pipe from first circulating fan again, later flow into furnace from the ventilation pipe, thereby can realize the circulation of the gas in the furnace and flow. Therefore, the glue discharging effect of the kiln can be better by arranging the first cooling circulation system, the volatile components such as PVA, moisture and other impurities in the magnetic piece blank can be effectively discharged, and the product can reach relevant performance indexes; the convection circulation of air in the hearth can be better through the arrangement of the first cooling circulation system, the kiln pressure is stable and reasonable, the direct heat radiation of the heating body in the kiln is changed into a composite heating mode combined with the convection, the temperature of each part (blank containing the magnetic part) in the hearth is uniform, and the cracking defect of the magnetic part can be greatly reduced.
Drawings
FIG. 1 is a front view of a kiln in an embodiment of the invention;
FIG. 2 is a left side view of a kiln in an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a vent in an embodiment of the invention;
FIG. 4 is a schematic sectional view of a furnace body in an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic cross-sectional view of a cooling tower in an embodiment of the present invention;
fig. 7 is a schematic structural view of a blast pipe in the embodiment of the present invention.
Description of reference numerals:
100-furnace body; 200-a lifting system; 300-burning bearing plates; 400-kiln car;
500-a first cooling circulation system; 510-a first circulation fan; 520-a ventilation pipe; 521-a housing; 522-insulating layer; 523-concrete layer; 524-inner tube; 531-air outlet body; 532-cavity; 533-air outlet pipe; 534-circulating air hole; 540-wind box; 550-a first exhaust pipe;
700-water sealing the pipe; 710-an exhaust valve;
800-a second cooling circulation system; 810-a second exhaust pipe; 820-a second circulating fan; 830-a cooling tower; 831-housing; 833-cooling the air duct; 840-a circulating air pipe; 850-blast pipe; 851-blast pipe body; 852-blast holes.
Detailed Description
The kiln proposed by the present invention is further described in detail below with reference to the accompanying drawings and specific examples. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The embodiment provides a kiln. Referring to fig. 1 and 2, fig. 1 is a front view of a kiln according to an embodiment of the present invention, and fig. 2 is a left side view of the kiln according to the embodiment of the present invention, the kiln comprising a kiln body 100, a lifting system 200, a setter plate 300, a kiln car 400, and a first cooling circulation system 500. The lifting system 200 is arranged at the bottom of the furnace body 100, the burning board 300 is arranged at the lower part of the furnace body 100, the lifting system 200 is used for driving the burning board 300 to move up and down, the kiln car 400 is used for placing the burning board 300, the first cooling circulation system 500 comprises a first circulating fan 510, a ventilation pipe 520 and a first exhaust pipe 550, the first circulating fan 510, the ventilation pipe 520 and the first exhaust pipe 550 are arranged outside the furnace body 100, the first exhaust pipe 550 is communicated with the hearth, the first circulating fan 510 is used for introducing gas in the first exhaust pipe 550 into the ventilation pipe 520, and the ventilation pipe 520 is communicated with the hearth.
Since the first cooling circulation system 500 includes the first circulation fan 510, the ventilation pipe 520 and the first exhaust pipe 550, the first circulation fan 510, the ventilation pipe 520 and the first exhaust pipe 550 are disposed outside the furnace body 100, the first exhaust pipe 550 is communicated with the furnace, the first circulation fan 510 is used for introducing the gas in the first exhaust pipe 550 into the ventilation pipe 520, and the ventilation pipe 520 is communicated with the furnace, when the first cooling circulation system 500 operates, the first cooling circulation system 500 can introduce the gas in the furnace into the first exhaust pipe 550 through the first circulation fan 510, and make the gas flow into the first circulation fan 510 after flowing through the first exhaust pipe 550, then flow into the ventilation pipe 520 from the first circulation fan 510, and then flow into the furnace from the ventilation pipe 520, so that the circulation flow of the gas in the furnace can be realized. Therefore, the first cooling circulation system 500 is arranged, so that the glue discharging effect of the kiln can be better, volatile components such as PVA, moisture and other impurities in the magnetic piece blank can be effectively discharged, and the product can reach relevant performance indexes; through setting up first cooling circulation system 500 can make the convection current circulation of air better in the furnace, make kiln pressure stable reasonable, the direct thermal radiation of the interior heat-generating body of kiln becomes the compound heating mode that combines together with the convection current, makes each position (including magnetic member body) temperature in the furnace even, but greatly reduced magnetic member's fracture defect.
In this embodiment, the ventilation pipes 520 are symmetrically arranged about the furnace body 100, and the ventilation pipes 520 are arranged on two sides of the furnace body 100, so that the atmosphere of the kiln can be optimized, the uniformity of product performance is improved, the reduction of yield caused by improving the atmosphere by slightly discharging products due to poor atmosphere in a certain area is avoided, the nitrogen consumption is reduced, and the production cost is reduced.
Referring to fig. 3, fig. 3 is a schematic cross-sectional view of a ventilation pipe 520 according to an embodiment of the present invention, where the ventilation pipe 520 includes an outer shell 521, an insulating layer 522, a concrete layer 523, and an inner pipe 524, the insulating layer 522 is located between the outer shell 521 and the inner pipe 524, and the concrete layer 523 is located between the insulating layer 522 and the inner pipe 524. The inner tube 524 is preferably corundum.
Referring to fig. 4 and 5, fig. 4 is a schematic cross-sectional view of the furnace body 100 in the embodiment of the present invention, fig. 5 is a cross-sectional view taken along a direction a-a in fig. 4, and the first cooling circulation system 500 further includes an air outlet device, and the ventilation pipe 520 is communicated with the furnace chamber through the air outlet device. Through setting up the air-out device, can make the air current that enters into in the furnace more even to make temperature and atmosphere in the furnace distribute evenly.
Specifically, the air-out device includes air-out body 531, a cavity 532 has been had in the air-out body 531, air-out pipe 533 has been seted up to air-out body 531 one side, circulation wind hole 534 has been seted up to air-out body 531 opposite side, the one end of air-out pipe 533 with cavity 532 intercommunication, the other end of air-out pipe 533 with ventilation pipe 520 intercommunication, the one end of circulation wind hole 534 with cavity 532 intercommunication, the other end of circulation wind hole 534 with furnace intercommunication.
Preferably, the air outlet pipe 533 is disposed opposite to the circulating air hole 534.
Preferably, the air outlet devices are symmetrically arranged about the furnace body 100.
In this embodiment, the number of the air outlet devices on each side of the furnace body is at least three.
The first cooling circulation system 500 further includes a wind box 540, and the ventilation pipe 520 is communicated with the wind outlet pipe 533 of the wind outlet device through the wind box 540. The wind boxes 540 are preferably symmetrically disposed at opposite sides of the furnace body 100.
The first exhaust pipe 550 is disposed at the top of the furnace body 100 and is located at the center of the top of the furnace body 100. Therefore, the airflow in the hearth can be more uniform, and the temperature and the atmosphere of the hearth are uniformly distributed.
In this embodiment, the first exhaust pipe 550 is connected to the water-sealed pipe 700 through an exhaust valve 710. As shown in fig. 1, the water seal pipe 700 is S-shaped. Therefore, the sealing performance in the kiln can be better, and the pressure in the kiln can be stabilized.
The kiln further comprises a second cooling circulation system 800, and the second cooling circulation system 800 is used for cooling the gas in the hearth. The second cooling circulation system 800 includes a second exhaust pipe 810, a second circulation fan 820, a cooling tower 830 and a circulation air pipe 840, the second circulation fan 820, the cooling tower 830, the circulation air pipe 840 and the second exhaust pipe 810 are disposed outside the furnace body 100, the second exhaust pipe 810 is communicated with the furnace chamber, the second circulation fan 820 is used for introducing the gas in the second exhaust pipe 810 into the cooling tower 830, the cooling tower 830 is communicated with one side of the circulation air pipe 840, and the other side of the circulation air pipe 840 is communicated with the furnace chamber. The second cooling circulation system 800 can introduce the gas in the furnace into the second exhaust pipe 810 through the second circulation fan 820, and the gas flows into the second circulation fan 820 from the second exhaust pipe 810, then flows into the cooling tower 830 from the second circulation fan 820, flows into the circulation duct 840 from the cooling tower 830, and flows into the furnace from the circulation duct 840, so that the circulation flow of the gas in the furnace can be realized.
Referring to fig. 6, fig. 6 is a schematic cross-sectional view of a cooling tower 830 according to an embodiment of the present invention, where the cooling tower 830 includes a housing 831, a cooling liquid disposed in the housing 831, and a cooling air pipe 833, the cooling air pipe 833 is disposed in the housing 831, one end of the cooling air pipe 833 is communicated with the second circulation fan 820, and the other end of the cooling air pipe 833 is communicated with the circulation air pipe 840.
The section of the cooling air pipe 833 is rectangular. Because the gas is cooled down rapidly in the cooling tower 830 when flowing through the cooling air pipe 833, the pipe wall of the cooling air pipe 833 can easily adsorb organic matters and volatile matters in the gas, the cross section of the cooling air pipe 833 is arranged to be rectangular, the organic matters and the volatile matters adhered to the wall of the cooling air pipe 833 in the circulating process can be cleaned conveniently, the cleaning frequency is reduced, the labor intensity of workers can be reduced, and the working efficiency is improved.
The number of the cooling air pipes 833 is multiple, one end of each cooling air pipe 833 is communicated with the second circulating fan 820, and the other end of each cooling air pipe 833 is communicated with the circulating air pipe 840, so that the sectional area of each cooling air pipe 833 can be increased, air flow in the cooling tower 830 can be smoother, and the second cooling circulating system 800 has a better cooling effect.
The cooling air pipe 833 is a straight pipe. So, do not have crooked cooling tuber pipe 833 can be convenient for clear up organic matter and volatile matter of adhesion on cooling tuber pipe 833 wall among the circulation process, can further reduce the clearance number of times, can alleviate workman's intensity of labour simultaneously, improve work efficiency.
The second cooling circulation system 800 further comprises an air supply pipe 850, the air supply pipe 850 is arranged in the hearth, two ends of the air supply pipe 850 are respectively connected with the circulation air pipes 840, and the air supply pipe 850 is communicated with the hearth.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a blower tube 850 according to an embodiment of the present invention, where the blower tube 850 includes a blower tube body 851 and blower holes 852 formed in the blower tube body 851, the blower holes 852 are distributed on the blower tube 850 at equal intervals, that is, the intervals between two adjacent blower holes 852 are equal, and the aperture of each blower hole 852 is gradually reduced from the middle of the blower tube 850 to both ends of the blower tube 850. Because the pressure is lower at the position farther from the air outlet according to the characteristics of fluid movement, the aperture of the air supply hole 852 is gradually reduced from the middle of the air supply pipe 850 to the two ends of the air supply pipe 850, so that the air volume of the gas flowing out of the air supply hole 852 on the air supply pipe 850 is equal, the gas entering the hearth is uniform, and the temperature and the atmosphere distribution of the hearth are uniform.
Preferably, the circulation air pipes 840 are symmetrically disposed about the furnace body 100 and disposed at both sides of the furnace body 100.
The air outlet device and the circulating branch pipe are arranged in a staggered mode.
When the sintering furnace works, products to be sintered are uniformly stacked on the burning bearing plate 300, the burning bearing plate 300 is lifted into the furnace chamber through the lifting system 200, the temperature of the furnace chamber is raised to 450-plus-material temperature of 500 ℃ through the heating body for glue discharging, the first cooling circulation system 500 and the second cooling circulation system 800 work, the exhaust valve 710 is opened at the same time, part of gas in the furnace chamber enters the first exhaust pipe 550, part of gas is discharged from the water seal pipe 700 through the exhaust valve 710, and part of gas is discharged through the waste gas treatment device. In this case, the gas in the furnace includes binder vapor and heated air.
After the glue discharging process is finished, the exhaust valve 710 is closed, water is injected into the water seal pipe 700 so as to seal each system in the kiln to stabilize the pressure in the kiln, and the first cooling circulation system 500 and the second cooling circulation system 800 are closed at the same time, so that the temperature of the kiln is kept at 450 ℃ and 500 ℃, and only the small air inlet fan is reserved to remove residual gas generated in the magnetic part sintering process.
And then, heating by a heating body, and heating the kiln to the maximum temperature at the speed of 3-4 ℃/min to sinter the magnetic piece, wherein the first cooling circulation system 500 and the second cooling circulation system 800 do not work in the process.
After the highest temperature is reached, the temperature in the hearth can reach the uniformity of +/-5 ℃, and the heat is preserved according to the process requirement. In the heat preservation stage, the first cooling cycle system 500 does not operate, and the second cooling cycle system 800 operates.
After heat preservation is finished, the cooling stage is started, the first cooling circulation system 500 and the second cooling circulation system 800 are started at the moment, the frequency conversion numerical values of the first circulating fan 510 and the second circulating fan 820 are controlled according to the speed of the process requirement, the cooling speed is guaranteed to meet the set process requirement, and due to the fact that the first cooling circulation system 500 is additionally arranged, magnetic parts of all parts in the hearth are more uniform in cooling effect and better in stability, and meanwhile the using amount of nitrogen is greatly reduced.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. The utility model provides a kiln, includes furnace body, operating system, holds fever board and kiln car, operating system sets up the bottom of furnace body, it sets up to hold the fever board the lower part of furnace body, operating system is used for the drive it reciprocates to hold the fever board, the kiln car is used for placing hold fever board, its characterized in that still includes first cooling circulation system, first cooling circulation system includes first circulating fan, ventilation pipe and first exhaust pipe, first circulating fan, ventilation pipe and first exhaust pipe set up outside the furnace body, first exhaust pipe and furnace intercommunication, first circulating fan be used for with gaseous introduction in the first exhaust pipe the ventilation pipe, the ventilation pipe with the furnace intercommunication.
2. The kiln of claim 1, wherein the ventilation ducts are symmetrically disposed about the body.
3. The kiln of claim 1, wherein the ventilation tube comprises an outer shell, an insulation layer, a concrete layer, and an inner tube, the insulation layer being positioned between the outer shell and the inner tube, and the concrete layer being positioned between the insulation layer and the inner tube.
4. The kiln of claim 1, wherein the first cooling circulation system further comprises an air outlet device, and the ventilation duct is communicated with the hearth through the air outlet device.
5. The kiln as claimed in claim 4, wherein the air outlet device comprises an air outlet body, the air outlet body is internally provided with a cavity, one side of the air outlet body is provided with an air outlet pipe, the other side of the air outlet body is provided with a circulating air hole, one end of the air outlet pipe is communicated with the cavity, the other end of the air outlet pipe is communicated with the ventilation pipe, one end of the circulating air hole is communicated with the cavity, and the other end of the circulating air hole is communicated with the hearth.
6. The kiln of claim 5, wherein the first cooling circulation system further comprises a wind box, and the ventilation pipe is communicated with a wind outlet pipe of the wind outlet device through the wind box.
7. The kiln of claim 1, further comprising a second cooling circulation system including a second exhaust duct, a second circulation fan, a cooling tower, and a circulation duct, wherein the second circulation fan, the cooling tower, the circulation duct, and the second exhaust duct are disposed outside the kiln body, the second exhaust duct is in communication with the furnace chamber, the second circulation fan is configured to introduce gas in the second exhaust duct into the cooling tower, the cooling tower is in communication with one side of the circulation duct, and the other side of the circulation duct is in communication with the furnace chamber.
8. The kiln of claim 7, wherein the cooling duct is rectangular in cross-section.
9. The kiln as claimed in claim 7, wherein the second cooling circulation system further comprises an air supply pipe, the air supply pipe is arranged in the hearth, two ends of the air supply pipe are respectively connected with the circulation air pipes, and the air supply pipe is communicated with the hearth.
10. The kiln as claimed in claim 9, wherein the blast pipe comprises a blast pipe body and blast holes opened in the blast pipe body, the blast holes are distributed on the blast pipe at equal intervals, and the hole diameter of the blast holes is gradually reduced from the middle of the blast pipe to both ends of the blast pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011557746.4A CN112629252A (en) | 2020-12-23 | 2020-12-23 | Kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011557746.4A CN112629252A (en) | 2020-12-23 | 2020-12-23 | Kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112629252A true CN112629252A (en) | 2021-04-09 |
Family
ID=75325407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011557746.4A Pending CN112629252A (en) | 2020-12-23 | 2020-12-23 | Kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112629252A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046667A (en) * | 2021-11-29 | 2022-02-15 | 佛山市凌赫热能科技有限公司 | Quick cooling device after special kiln burning |
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|---|---|---|---|---|
| JPH08261655A (en) * | 1995-03-23 | 1996-10-11 | Ngk Insulators Ltd | Cooling zone of continuous furnace, and its cooling method |
| CN203095861U (en) * | 2013-01-07 | 2013-07-31 | 洛阳北方玻璃技术股份有限公司 | Hot air blowing circulating system in heating furnace of toughened glass unit |
| CN203798158U (en) * | 2014-04-30 | 2014-08-27 | 临沂银凤电子科技股份有限公司 | Small multifunctional magnetic material calcining kiln |
| CN104613757A (en) * | 2015-01-21 | 2015-05-13 | 临沂银凤电子科技股份有限公司 | Magnetic material sintering elevator furnace of optimization circulation system |
| CN107243174A (en) * | 2017-06-29 | 2017-10-13 | 江西稀有稀土金属钨业集团有限公司 | A kind of thickener |
| CN208462283U (en) * | 2018-08-09 | 2019-02-01 | 国网浙江省电力有限公司温州供电公司 | A kind of power grid backup auto-activating device collector |
| CN211641601U (en) * | 2020-01-18 | 2020-10-09 | 深圳市瀚云在线教育科技有限公司 | Blackboard with adjustable function for education and teaching |
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2020
- 2020-12-23 CN CN202011557746.4A patent/CN112629252A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261655A (en) * | 1995-03-23 | 1996-10-11 | Ngk Insulators Ltd | Cooling zone of continuous furnace, and its cooling method |
| CN203095861U (en) * | 2013-01-07 | 2013-07-31 | 洛阳北方玻璃技术股份有限公司 | Hot air blowing circulating system in heating furnace of toughened glass unit |
| CN203798158U (en) * | 2014-04-30 | 2014-08-27 | 临沂银凤电子科技股份有限公司 | Small multifunctional magnetic material calcining kiln |
| CN104613757A (en) * | 2015-01-21 | 2015-05-13 | 临沂银凤电子科技股份有限公司 | Magnetic material sintering elevator furnace of optimization circulation system |
| CN107243174A (en) * | 2017-06-29 | 2017-10-13 | 江西稀有稀土金属钨业集团有限公司 | A kind of thickener |
| CN208462283U (en) * | 2018-08-09 | 2019-02-01 | 国网浙江省电力有限公司温州供电公司 | A kind of power grid backup auto-activating device collector |
| CN211641601U (en) * | 2020-01-18 | 2020-10-09 | 深圳市瀚云在线教育科技有限公司 | Blackboard with adjustable function for education and teaching |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046667A (en) * | 2021-11-29 | 2022-02-15 | 佛山市凌赫热能科技有限公司 | Quick cooling device after special kiln burning |
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