CN115371360A - Drying production line and drying method of ceramic heating tube - Google Patents
Drying production line and drying method of ceramic heating tube Download PDFInfo
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- CN115371360A CN115371360A CN202211026119.7A CN202211026119A CN115371360A CN 115371360 A CN115371360 A CN 115371360A CN 202211026119 A CN202211026119 A CN 202211026119A CN 115371360 A CN115371360 A CN 115371360A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 159
- 238000001035 drying Methods 0.000 title claims abstract description 142
- 239000000919 ceramic Substances 0.000 title claims abstract description 100
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 63
- 238000007599 discharging Methods 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 238000010583 slow cooling Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000005485 electric heating Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000003245 working effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/122—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of material being carried by transversely moving rollers or rods which may rotate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/003—Handling, e.g. loading or unloading arrangements for articles
Abstract
The invention discloses a drying production line and a drying process of a ceramic heating tube, wherein the drying production line comprises a conveying table, a plurality of rotatable conveying rollers are arranged on the conveying table, a driving mechanism is arranged on one side of the conveying table, and the driving mechanism is in transmission connection with the conveying rollers; the conveying table is sequentially provided with a feeding zone, a first preheating zone, a second preheating zone, a high-temperature drying zone, a cooling zone and a discharging zone along the feeding and discharging direction; the first preheating zone and the second preheating zone respectively comprise at least three preheating sections, and the drying temperatures of the plurality of preheating sections are gradually increased along the discharging direction; the utility model discloses a stoving production line, first preheating zone and second preheating zone all include at least three preheating section, and ceramic heating tube gets into high temperature drying zone through six at least preheating sections reentrant in proper order under the drive of conveying roller, can realize ceramic heating tube surface temperature's promotion gradually, avoids ceramic heating tube surface crack to appear, improves the yields in the production and processing process.
Description
Technical Field
The invention relates to the technical field of ceramic heating tube production equipment, in particular to a drying production line of a ceramic heating tube.
Background
The ceramic electric heating tube is made by using good ceramic as a substrate and winding a high-quality electric heating wire on the surface of the ceramic in series; the ceramic electric heating pipe has the advantages of high electric heat conversion efficiency, quick temperature rise, small thermal inertia, high temperature resistance, corrosion resistance, good stability of thermochemical performance, long service life, high insulating strength, no pollution and the like, and can save energy by about 30 percent compared with other electric heating elements; at present, the ceramic electric heating tube is widely applied to a water heater, an oven, an electric heater, an electric heating film and the like.
The existing production and processing process of the ceramic electric heating tube comprises a drying process, if the surface temperature of the ceramic electric heating tube is greatly increased in a short time in the drying process, cracks are easy to appear on the surface of the ceramic electric heating tube, and the yield of the production process is reduced; if the drying temperature is too low, the ceramic electric heating tube cannot be effectively dried, and the working effect of the ceramic electric heating tube is reduced.
It is seen that improvements and enhancements in the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide the drying production line of the ceramic heating tube, which can gradually increase the surface temperature of the ceramic heating tube, avoid cracks on the surface of the ceramic heating tube and improve the yield in the production and processing process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a drying production line of ceramic heating tubes comprises a conveying table, wherein a plurality of rotatable conveying rollers are arranged on the conveying table, a driving mechanism is arranged on one side of the conveying table, and the driving mechanism is in transmission connection with the conveying rollers; the conveying table is sequentially provided with a feeding area, a first preheating area, a second preheating area, a high-temperature drying area, a cooling area and a discharging area along the feeding and discharging direction; the first preheating zone and the second preheating zone respectively comprise at least three preheating sections, and the drying temperature of the plurality of preheating sections is gradually increased along the discharging direction.
In the drying production line of the ceramic heating tube, the first preheating zone comprises a first preheating section, a second preheating section and a third preheating section which are sequentially arranged along the discharging direction, the drying temperature of the first preheating section is 300 ℃, the drying temperature of the second preheating section is 600 ℃, and the drying temperature of the third preheating section is 900 ℃.
In the drying production line of the ceramic heating tube, the first preheating section comprises twelve first heating rods, and six first heating rods are respectively arranged above and below the conveying roller; the second preheating section comprises twelve second heating rods, and six second heating rods are respectively arranged above and below the conveying roller; the third preheating section comprises twelve third heating rods, and six third heating rods are arranged above and below the conveying roller respectively.
In the drying production line of the ceramic heating tube, the second preheating zone comprises a fourth preheating section, a fifth preheating section and a sixth preheating section which are sequentially arranged along the discharging direction, the drying temperature of the fourth preheating section is 1000 ℃, the drying temperature of the fifth preheating section is 1100 ℃, and the drying temperature of the fifth preheating section is 1200 ℃.
In the drying production line of the ceramic heating tube, the fourth preheating section comprises twenty-four fourth heating rods, and twelve fourth heating rods are respectively arranged above and below the conveying roller; the fifth preheating section comprises twenty-four fifth heating rods, and twelve fifth heating rods are respectively arranged above and below the conveying roller; the sixth preheating section comprises twenty-four sixth heating rods, and twelve sixth heating rods are arranged above and below the conveying roller respectively.
In the drying production line of the ceramic heating tube, the high-temperature drying area comprises three drying sections, and the drying temperature of the drying sections is 1250 ℃.
In the drying production line of the ceramic heating tube, the drying section comprises twenty-four seventh heating rods, and twelve seventh heating rods are respectively arranged above and below the conveying roller.
In the drying production line of the ceramic heating tube, the cooling area comprises a slow cooling section, a water cooling section and an air cooling section which are sequentially arranged along the discharging direction.
In the drying production line of the ceramic heating tube, a plurality of air inlets and a plurality of air outlets are respectively arranged on two sides of the conveying table, and the air inlets and the air outlets are in one-to-one correspondence and are respectively positioned on two sides of the slow cooling section; the top of the conveying table is provided with a first water inlet and a first water outlet, and is provided with a first cooling channel, and the first water inlet is connected with the first water outlet through the first cooling channel; a second water inlet and a second water outlet are formed in the bottom of the conveying table, a second cooling channel is formed in the conveying table, and the second water inlet is communicated with the second water outlet through the second cooling channel; the first cooling channel and the second cooling channel are respectively positioned above and below the conveying roller; the air cooling section comprises at least two fans, the two fans are fixedly arranged at the top of the conveying table respectively, and the air supply direction of the fans faces the conveying rollers.
The invention also correspondingly provides a drying method of the ceramic heating tube, which comprises the following steps:
s100, placing a ceramic heating tube to be dried on a feeding area of a conveying belt, and driving a conveying roller to rotate by a driving mechanism;
s200, the ceramic heating tube is driven by a conveying roller to sequentially pass through a first preheating section, a second preheating section, a third preheating section, a fourth preheating section, a fifth preheating section, a sixth preheating section and a high-temperature drying zone for heating and drying, and then is cooled by a slow cooling section, a water cooling section and an air cooling section and then is output to a discharging zone; the drying temperature of the first preheating section is controlled to be 300 ℃, the drying temperature of the second preheating section is controlled to be 600 ℃, the drying temperature of the third preheating section is controlled to be 900 ℃, the drying temperature of the fourth preheating section is controlled to be 1000 ℃, the drying temperature of the fifth preheating section is controlled to be 1100 ℃, the drying temperature of the sixth preheating section is controlled to be 1200 ℃, and the drying temperature of the high-temperature drying zone is controlled to be 1250 ℃.
Has the advantages that:
the invention provides a drying production line of a ceramic heating tube, wherein a first preheating zone and a second preheating zone respectively comprise at least three preheating sections, the ceramic heating tube sequentially passes through at least six preheating sections under the drive of a conveying roller and then enters a high-temperature drying zone, the surface temperature of the ceramic heating tube can be gradually increased, cracks on the surface of the ceramic heating tube are avoided, and the yield in the production and processing process is improved; the cooperation of six at least preheating sections and high temperature drying district can realize the effective stoving of ceramic heating tube, improves ceramic heating tube's working effect.
Drawings
FIG. 1 is a side cross-sectional view of a drying line provided by the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is an enlarged view of section C of FIG. 1;
fig. 5 is an enlarged view of a portion D of fig. 1.
Description of the main element symbols: 1-conveying table, 2-conveying roller, 3-feeding area, 4-first preheating area, 41-first preheating section, 411-first heating rod, 42-second preheating section, 421-second heating rod, 43-third preheating section, 431-third heating rod, 5-second preheating area, 51-fourth preheating section, 511-fourth heating rod, 52-fifth preheating section, 521-fifth heating rod, 53-sixth preheating section, 531-sixth heating rod, 6-high temperature drying area, 61-drying section, 611-seventh heating rod, 7-cooling area, 71-slow cooling section, 72-water cooling section, 721-first water inlet, 722-first water outlet, 723-first cooling channel, 724-second water inlet, 725-second water outlet, 726-second cooling channel, 73-air cooling section, 731-fan, 8-discharging area.
Detailed Description
The invention provides a drying production line and a drying process of a ceramic heating tube, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and embodiments.
In the description of the present invention, it is to be understood that the terms "top", "bottom", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience of description and simplification of description, and are not to be construed as limitations of the present invention; in addition, the terms "mounted," "connected," and the like are to be construed broadly, and those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
Referring to fig. 1 to 5, the invention provides a drying production line of ceramic heating tubes, which comprises a conveying table 1, wherein a plurality of rotatable conveying rollers 2 are arranged on the conveying table 1, and a driving mechanism is arranged on one side of the conveying table 1 and is in transmission connection with the conveying rollers 2; the conveying table 1 is sequentially provided with a feeding area 3, a first preheating area 4, a second preheating area 5, a high-temperature drying area 6, a cooling area 7 and a discharging area 8 along the feeding and discharging direction; the first preheating zone 4 and the second preheating zone 5 respectively comprise at least three preheating sections, and the drying temperature of the plurality of preheating sections is gradually increased along the discharging direction; in one embodiment, the driving mechanism comprises a driving motor, and the driving mechanism and the conveying roller 2 realize the rotation of the conveying roller 2 through the existing motor gear transmission structure.
In the drying production line disclosed by the application, during actual work, the ceramic heating tube is driven by the conveying roller 2 to sequentially enter the first preheating zone 4, the second preheating zone 5 and the high-temperature drying zone 6 for drying; the first preheating zone 4 and the second preheating zone 5 respectively comprise at least three preheating sections, the ceramic heating tube sequentially passes through at least six preheating sections under the driving of the conveying roller 2 and then enters the high-temperature drying zone 6, the surface temperature of the ceramic heating tube can be gradually increased, cracks on the surface of the ceramic heating tube are avoided, and the yield in the production and processing process is improved; the at least six preheating sections are matched with the high-temperature drying area 6, so that the ceramic heating tube can be effectively dried, and the working effect of the ceramic heating tube is improved; after the stoving of accomplishing ceramic heating tube, ceramic heating tube gets into cooling space 7 under conveying roller 2's drive and cools off, reduces to getting into ejection of compact district 8 again behind the room temperature, makes things convenient for the staff to inspect the stoving effect of ceramic heating tube in ejection of compact district 8 to carry out the unloading of ceramic heating tube.
Further, referring to fig. 1 and fig. 2, the first preheating zone 4 includes a first preheating section 41, a second preheating section 42 and a third preheating section 43 sequentially arranged along the discharging direction, wherein the drying temperature of the first preheating section 41 is 300 ℃, the drying temperature of the second preheating section 42 is 600 ℃, and the drying temperature of the third preheating section 43 is 900 ℃; because the ceramic heating tube has certain heat resistance, the temperature difference between adjacent preheating sections can be increased in the first preheating zone 4, the surface temperature of the ceramic heating tube is quickly increased, and the drying efficiency of the ceramic heating tube is improved; in other embodiments, the number of preheating sections included in the first preheating zone 4 can be adjusted according to actual production requirements, and the temperatures of the first preheating section 41, the second preheating section 42 and the third preheating section 43 can also be adjusted according to actual production requirements, but the temperature difference between adjacent preheating sections is ensured to be 300 ℃.
Further, referring to fig. 1 and fig. 2, the first preheating section 41 includes twelve first heating rods 411, six first heating rods 411 are respectively disposed above and below the conveying roller 2, and the six first heating rods 411 are uniformly disposed; the second preheating section 42 comprises twelve second heating rods 421, six second heating rods 421 are respectively arranged above and below the conveying roller 2, and the six second heating rods 421 are uniformly arranged; the third preheating section 43 comprises twelve third heating rods 431, six third heating rods 431 are respectively arranged above and below the conveying roller 2, and the six third heating rods 431 are uniformly arranged; the three preheating sections respectively comprise twelve heating rods which are uniformly arranged up and down, so that the upper surface and the lower surface of the ceramic heating tube can be uniformly heated, and the drying effect on the ceramic heating tube is improved; in one embodiment, the first, second, and third heat generating rods 411, 421, and 431 may be electric heating rods; in other embodiments, the number of the first heat generating rod 411, the second heat generating rod 421 and the third heat generating rod 431 may be adjusted according to actual production needs.
Further, referring to fig. 1 and fig. 3, the second preheating zone 5 includes a fourth preheating section 51, a fifth preheating section 52 and a sixth preheating section 53 sequentially arranged along the discharging direction, wherein the drying temperature of the fourth preheating section 51 is 1000 ℃, the drying temperature of the fifth preheating section 52 is 1100 ℃, and the drying temperature of the fifth preheating section 52 is 1200 ℃; in the second preheating zone 5, because the overall drying temperature of the second preheating zone 5 is higher than that of the first preheating zone 4, the temperature difference between adjacent preheating sections is reduced, the surface temperature of the ceramic heating tube is gradually increased, cracks on the surface of the ceramic heating tube are avoided, and the yield of the production and processing process is improved; in other embodiments, the number of preheating sections included in the second preheating zone 5 can be adjusted according to actual production requirements, and the temperatures of the fourth preheating section 51, the fifth preheating section 52 and the sixth preheating section 53 can also be adjusted according to actual production requirements, but the temperature difference between adjacent preheating sections is ensured to be 100 ℃.
Further, referring to fig. 1 and 3, the fourth preheating section 51 includes twenty-four fourth heating rods 511, twelve fourth heating rods 511 are respectively disposed above and below the conveying roller 2, and twelve fourth heating rods 511 are uniformly disposed; the fifth preheating section 52 comprises twenty-four fifth heating rods 521, twelve fifth heating rods 521 are respectively arranged above and below the conveying roller 2, and the twelve fifth heating rods 521 are uniformly arranged; the sixth preheating section 53 comprises twenty-four sixth heating rods 531, twelve sixth heating rods 531 are respectively arranged above and below the conveying roller 2, and the twelve sixth heating rods 531 are uniformly arranged; the three preheating sections respectively comprise twenty four heating rods which are uniformly arranged up and down, so that the upper surface and the lower surface of the ceramic heating tube can be uniformly heated, and the drying effect on the ceramic heating tube is improved; in one embodiment, the fourth, fifth and sixth heat generating rods 511, 521 and 531 may be electric heat generating rods; in other embodiments, the number of the fourth heat generating rods 511, the fifth heat generating rods 521 and the sixth heat generating rods 531 may be adjusted according to actual production needs.
Further, referring to fig. 1 and 4, the high temperature drying zone 6 includes three drying sections 61, the lengths of the three drying sections 61 are the same, and the drying temperature of the drying sections 61 is 1250 ℃; the three drying sections 61 are arranged to ensure effective drying of the ceramic heating tube and improve the working effect of the ceramic heating tube; in other embodiments, the number of the drying sections 61 and the drying temperature of the drying sections 61 may be adjusted according to actual production needs.
Further, referring to fig. 1 and 4, the drying section 61 includes twenty-four seventh heating rods 611, twelve seventh heating rods 611 are respectively disposed above and below the conveying roller 2, and the twelve seventh heating rods 611 are uniformly disposed, so as to ensure that the upper and lower surfaces of the ceramic heating tube are uniformly heated, and improve the drying effect of the ceramic heating tube; in one embodiment, the seventh heat generating rod 611 may be a silicon carbon heating rod; in other embodiments, the number of the seventh heat generating bars 611 may be adjusted according to actual production needs.
Further, referring to fig. 1 and 5, the cooling zone 7 includes a slow cooling section 71, a water cooling section 72 and an air cooling section 73 which are sequentially arranged along the discharging direction, and the slow cooling section 71 adopts a natural cooling form to avoid that the working effect of the ceramic heating tube is affected by too large temperature change in a short time; the water cooling section 72 adopts cooling water as a cold source for cooling; the air cooling section 73 adopts an air supply device as a cold source to further cool the ceramic heating tube; the cooling area 7 comprises three sections of cooling, so that the temperature of the ceramic heating tube output to the discharging area 8 is reduced to room temperature, and the working personnel can conveniently check the drying effect of the ceramic heating tube and perform blanking of the ceramic heating tube.
Further, referring to fig. 1 and 5, a plurality of air inlets and a plurality of air outlets are respectively formed on two sides of the conveying table 1, the air inlets and the air outlets are in one-to-one correspondence and respectively located on two sides of the slow cooling section 71, and natural cooling of the ceramic heating tube is realized through air convection between the air inlets and the air outlets; the top of the conveying table 1 is provided with a first water inlet 721 and a first water outlet 722, and is provided with a first cooling channel 723, and the first water inlet 721 is connected with the first water outlet 722 through the first cooling channel 723; the bottom of the conveying table 1 is provided with a second water inlet 724 and a second water outlet 725, and is provided with a second cooling channel 726, and the second water inlet 724 is communicated with the second water outlet 725 through the second cooling channel 726; the first cooling channel 723 and the second cooling channel 726 are respectively located above and below the conveyor roller 2; the first water inlet 721, the first water outlet 722, the second air inlet and the second water outlet 725 are respectively connected with an external cooling water supply device; the uniform cooling of the upper and lower surfaces of the ceramic tube is realized by the cooling water in the first cooling channel 723 and the second cooling channel 726, and the cooling efficiency of the ceramic heating tube is improved; the air cooling section 73 comprises at least two fans 731, the two fans 731 are fixedly arranged at the top of the conveying table 1 respectively, the air supply direction of the fans 731 faces the conveying roller 2, air is supplied to the conveying roller 2 through the fans 731, and the ceramic heating tube on the conveying roller 2 is cooled by air cooling, so that the temperature of the ceramic heating tube is further reduced; in other embodiments, the number of the air supply ports, the air inlets and the fans 731 can be adjusted according to actual production needs.
Further, a controller is arranged on one side of the conveying table 1, the controller comprises a plurality of control chips, and the control chips can be STM32 series control chips; a first temperature sensor is arranged in the first preheating section 41, a second temperature sensor is arranged in the second preheating section 42, a third temperature sensor is arranged in the third preheating section 43, a fourth temperature sensor is arranged in the fourth preheating section 51, a fifth temperature sensor is arranged in the fifth preheating section 52, a sixth temperature sensor is arranged in the sixth preheating section 53, and a seventh temperature sensor is arranged in the drying section 61; the driving mechanism, the first temperature sensor, the first heating rod 411, the second temperature sensor, the second heating rod 421, the third temperature sensor, the third heating rod 431, the fourth temperature sensor, the fourth heating rod 511, the fifth temperature sensor, the fifth heating rod 521, the sixth temperature sensor, the sixth heating rod 531, the seventh temperature sensor and the seventh heating rod 611 are respectively electrically connected with the controller; when the drying process of the ceramic heating tube is carried out, the controller controls the seven heating rods to start working, when the real-time temperatures fed back by the seven temperature sensors are consistent with the corresponding set temperature preset in the controller, the controller controls the driving mechanism to start working, the conveying roller 2 starts rotating to drive the ceramic heating tube to sequentially enter the first preheating zone 4, the second preheating zone 5 and the high-temperature drying zone 6, namely, the ceramic heating tube is conveyed to be dried after the temperature of each preheating section and each drying section reaches the preset temperature, and the drying effect of the drying production line on the ceramic heating tube is ensured; in the drying process of the ceramic heating tube, the controller correspondingly adjusts the working frequency of the seven heating rods according to the real-time temperature information fed back by the seven temperature sensors.
Further, in one embodiment, a first regulating valve is disposed at the first water inlet 721, a second regulating valve is disposed at the second water inlet 724, the water cooling section 72 includes an in-position detecting sensor and an eighth temperature sensor, and the first regulating valve, the second regulating valve, the in-position detecting sensor and the eighth temperature sensor are respectively electrically connected to the controller; when the ceramic heating tube starts a drying process, the controller controls the water cooling section 72 to synchronously start working with the first preheating zone 4, the second preheating zone 5 and the high-temperature drying zone 6; the controller adjusts the opening degrees of the first regulating valve and the second regulating valve according to real-time temperature information fed back by the eighth temperature sensor, so that the temperature in the water cooling section 72 is consistent with the preset temperature preset in the controller; when the in-place detection sensor feeds back a detection signal to the controller, the controller controls the fan 731 of the air cooling section 73 to start working, so that the fan 731 is prevented from working for a long time, and the purpose of energy conservation is achieved; in one embodiment, the in-place detection sensor is disposed at the feed end of the water cooling section 72, and the in-place detection sensor is a photoelectric sensor.
The invention also correspondingly provides a drying method of the ceramic heating tube, which comprises the following steps:
s100, placing a ceramic heating tube to be dried on a feeding area 3 of a conveying belt, and driving a conveying roller 2 to rotate by a driving mechanism;
s200, the ceramic heating tube is driven by a conveying roller 2 to sequentially pass through a first preheating section 41, a second preheating section 42, a third preheating section 43, a fourth preheating section 51, a fifth preheating section 52, a sixth preheating section 53 and a high-temperature drying zone 6 for heating and drying, and then is cooled by a slow cooling section 71, a water cooling section 72 and an air cooling section 73 and output to a discharging zone 8; the drying temperature of the first preheating section 41 is controlled to be 300 ℃, the drying temperature of the second preheating section 42 is controlled to be 600 ℃, the drying temperature of the third preheating section 43 is controlled to be 900 ℃, the drying temperature of the fourth preheating section 51 is controlled to be 1000 ℃, the drying temperature of the fifth preheating section 52 is controlled to be 1100 ℃, the drying temperature of the sixth preheating section 53 is controlled to be 1200 ℃, and the drying temperature of the high-temperature drying zone 6 is controlled to be 1250 ℃.
The application discloses drying method, when drying, can realize ceramic heating tube surface temperature's gradual promotion, after accomplishing the stoving, can realize ceramic heating tube surface temperature's gradual reduction, avoids ceramic heating tube surface temperature to promote by a wide margin or reduce by a wide margin to avoid ceramic tube surface to appear the crack, improve the yields of ceramic heating tube in the production and processing process.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (10)
1. A drying production line of ceramic heating tubes comprises a conveying table, wherein a plurality of rotatable conveying rollers are arranged on the conveying table, a driving mechanism is arranged on one side of the conveying table, and the driving mechanism is in transmission connection with the conveying rollers; the device is characterized in that the conveying table is sequentially provided with a feeding zone, a first preheating zone, a second preheating zone, a high-temperature drying zone, a cooling zone and a discharging zone along the feeding and discharging direction; the first preheating zone and the second preheating zone respectively comprise at least three preheating sections, and the drying temperature of the plurality of preheating sections is gradually increased along the discharging direction.
2. The drying production line of the ceramic heating tube as claimed in claim 1, wherein the first preheating zone comprises a first preheating section, a second preheating section and a third preheating section which are sequentially arranged along the discharging direction, the drying temperature of the first preheating section is 300 ℃, the drying temperature of the second preheating section is 600 ℃, and the drying temperature of the third preheating section is 900 ℃.
3. The drying production line of the ceramic heating tube as claimed in claim 2, wherein the first preheating section comprises twelve first heating rods, and six first heating rods are respectively arranged above and below the conveying roller; the second preheating section comprises twelve second heating rods, and six second heating rods are respectively arranged above and below the conveying roller; the third preheating section comprises twelve third heating rods, and six third heating rods are arranged above and below the conveying roller respectively.
4. The drying production line of the ceramic heating tube as claimed in claim 1, wherein the second preheating zone comprises a fourth preheating section, a fifth preheating section and a sixth preheating section which are sequentially arranged along the discharging direction, the drying temperature of the fourth preheating section is 1000 ℃, the drying temperature of the fifth preheating section is 1100 ℃, and the drying temperature of the fifth preheating section is 1200 ℃.
5. The drying production line of ceramic heating tubes as claimed in claim 4, wherein the fourth preheating section comprises twenty-four fourth heating rods, and twelve fourth heating rods are respectively arranged above and below the conveying roller; the fifth preheating section comprises twenty-four fifth heating rods, and twelve fifth heating rods are respectively arranged above and below the conveying roller; the sixth preheating section comprises twenty-four sixth heating rods, and twelve sixth heating rods are arranged above and below the conveying roller respectively.
6. The drying line of a ceramic heating tube as claimed in claim 1, wherein the high temperature drying zone comprises three drying sections, and the drying temperature of the drying sections is 1250 ℃.
7. The drying production line of ceramic heating tubes as claimed in claim 6, wherein the drying section comprises twenty-four seventh heating rods, and twelve seventh heating rods are respectively arranged above and below the conveying rollers.
8. The drying production line of the ceramic heating tubes as claimed in claim 1, wherein the cooling zone comprises a slow cooling section, a water cooling section and an air cooling section which are sequentially arranged along the discharging direction.
9. The drying production line of the ceramic heating tube as claimed in claim 8, wherein a plurality of air inlets and a plurality of air outlets are respectively formed at two sides of the conveying table, and the air inlets and the air outlets are in one-to-one correspondence and respectively located at two sides of the slow cooling section; the top of the conveying table is provided with a first water inlet and a first water outlet, and is provided with a first cooling channel, and the first water inlet is connected with the first water outlet through the first cooling channel; a second water inlet and a second water outlet are formed in the bottom of the conveying table, a second cooling channel is formed in the conveying table, and the second water inlet is communicated with the second water outlet through the second cooling channel; the first cooling channel and the second cooling channel are respectively positioned above and below the conveying roller; the air cooling section comprises at least two fans, the two fans are fixedly arranged at the top of the conveying table respectively, and the air supply direction of the fans faces the conveying rollers.
10. The drying method of the ceramic heating tube is characterized by comprising the following steps of:
s100, placing a ceramic heating tube to be dried on a feeding area of a conveying belt, and driving a conveying roller to rotate by a driving mechanism;
s200, the ceramic heating tube is driven by a conveying roller to sequentially pass through a first preheating section, a second preheating section, a third preheating section, a fourth preheating section, a fifth preheating section, a sixth preheating section and a high-temperature drying zone for heating and drying, and then is cooled by a slow cooling section, a water cooling section and an air cooling section and then is output to a discharging zone; the drying temperature of the first preheating section is controlled to be 300 ℃, the drying temperature of the second preheating section is controlled to be 600 ℃, the drying temperature of the third preheating section is controlled to be 900 ℃, the drying temperature of the fourth preheating section is controlled to be 1000 ℃, the drying temperature of the fifth preheating section is controlled to be 1100 ℃, the drying temperature of the sixth preheating section is controlled to be 1200 ℃, and the drying temperature of the high-temperature drying zone is controlled to be 1250 ℃.
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