CN111637742A - Environment-friendly energy-saving tunnel de-waxing kiln - Google Patents
Environment-friendly energy-saving tunnel de-waxing kiln Download PDFInfo
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- CN111637742A CN111637742A CN202010528515.4A CN202010528515A CN111637742A CN 111637742 A CN111637742 A CN 111637742A CN 202010528515 A CN202010528515 A CN 202010528515A CN 111637742 A CN111637742 A CN 111637742A
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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
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
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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
- F27B9/40—Arrangements of controlling or monitoring devices
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- 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
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
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- 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
- F27D9/00—Cooling of furnaces or of charges therein
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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
- F27B2009/122—Preheating
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- 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
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/0002—Cooling of furnaces
- F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas
- F27D2009/0013—Cooling of furnaces the cooling medium being a fluid other than a gas the fluid being water
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- 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
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D2021/0057—Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects
Abstract
The invention discloses an environment-friendly energy-saving tunnel de-waxing kiln which comprises a loading area, a preheating tunnel kiln, a de-waxing tunnel kiln and a sintering tunnel kiln, wherein the preheating tunnel kiln is communicated with a product inlet end of the de-waxing tunnel kiln, the sintering tunnel kiln is communicated with a product output end of the de-waxing tunnel kiln, a buffering tunnel kiln is arranged in the sintering tunnel kiln, the preheating tunnel kiln preheats a ceramic green blank, the heat preservation time of an original low-temperature section is prolonged, meanwhile, a continuous temperature rising temperature range is arranged in the de-waxing tunnel kiln, and the temperature range of the product is effectively controlled to be within the temperature range of 100-400-660 ℃ by combining the temperature range of the preheating tunnel kiln, so that the buffering tunnel kiln can slow down the convection of high-temperature gas, effectively prevent the product from being fried in the de-waxing process and improve; the inlet and the outlet of the de-waxing tunnel kiln are both provided with corners, so that the temperature stability of the de-waxing tunnel is fully ensured, the de-waxing effect is ensured, the production cost is saved, the loss is reduced, and the economic benefit is huge.
Description
Technical Field
The invention relates to the technical field of electronic ceramic production equipment, in particular to an environment-friendly and energy-saving tunnel de-waxing kiln.
Background
Electronic ceramics (electronic ceramics) refers to ceramics that can utilize electrical and magnetic properties in the electronics industry. The electronic ceramic is a ceramic with new functions finally obtained through the precise control of the surface, grain boundary and size structure. Can be widely applied to the aspects of energy, household appliances, automobiles and the like, and the product output value of the product reaches several billion yuan and is continuously increased.
Known special ceramic manufacturing techniques, such as isostatic pressing, dry pressing, hot-pressing injection molding, slip casting, injection molding, in-situ injection-coagulation molding, and the like. At present, the hot-pressing injection molding process accounts for more than 70 percent of the production capacity of the special ceramics in China. The hot-pressing injection process flow comprises the following steps: ceramic powder and hot melt colloid pulping, pressure injection molding, adsorbent binder removal (dewaxing), bisque firing, post-processing, inspection and packaging for delivery.
However, a major problem that is currently overlooked in the industry, and one that cannot be solved, is the "implosion" (cracking) of the ceramic products produced. As is known to all, the common use in the dewaxing process is a tunnel kiln, which is a straight channel, one end of the channel is a product input end, the other end of the channel is a product output end, a plurality of heating sections are divided between the product input end and the product output end to carry out dewaxing and sintering on a green body, when the temperature reaches 360 ℃, paraffin can be violently combusted to form open fire, at the moment, the open fire is violent in dewaxing of the product, and the open fire can spread to follow-up products. In order to prevent subsequent products with the temperature lower than 360 ℃ from igniting and burning, an air suction opening is usually arranged at a heating section with the temperature of 300 ℃ for heat exchange, so that the temperature at the heating section is not higher than 300 ℃, and the spread of open fire to subsequent products is avoided to the greatest extent but cannot be completely avoided; and the heat exchange of the common de-waxing kiln mainly leads to air circulation cooling by air draft, so that a large amount of gas inside the de-waxing kiln flows, hot air convection inside the whole kiln is caused, the stability of the temperature of the gas inside the tunnel kiln is influenced, the de-waxing effect is influenced by the stable de-waxing temperature, and the phenomenon of 'inner explosion' is aggravated.
At present, the main problems encountered in the tunnel kiln wax removal are that the sintered finished product after wax removal has an 'internal explosion' (cracking) phenomenon, the defective rate is 3% -5%, and the product has a cracking rate as high as 8% -20% along with seasonal climate change, air pressure change and other factors. According to incomplete statistics, the production cost of 95 alumina ceramics is about 2 ten thousand yuan per ton, the yield of one tunnel kiln per month is about 80 tons, and the loss of 2.4 tons per month is calculated according to the lowest defective rate of 3 percent, namely the loss of four hundred and more than ten thousand per month, and the loss of nearly five million in one year. Therefore, in the manufacturing process of the conventional electronic ceramic product, the economic loss caused by the over-high defective rate is huge, and the problem needs to be solved urgently.
Disclosure of Invention
The invention aims to solve the problem of 'inner explosion' in wax removal in the prior art, and provides an environment-friendly and energy-saving tunnel wax removal kiln to reduce or even completely eliminate the 'inner explosion' phenomenon.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an environmental protection and energy saving tunnel dewaxing kiln, includes the charge space, preheats tunnel kiln, dewaxing tunnel kiln and sintering tunnel kiln, preheat tunnel kiln with the product entry end intercommunication of dewaxing tunnel kiln, sintering tunnel kiln with the product output end intercommunication of dewaxing tunnel kiln, sintering tunnel kiln is inside to set up buffering tunnel kiln.
Furthermore, four thermocouples are arranged in the kiln and are respectively arranged at a product inlet of the preheating tunnel kiln, a product inlet of the de-waxing tunnel kiln, a product inlet of the buffering tunnel kiln and a product inlet of the sintering tunnel kiln, the temperature in the preheating tunnel kiln is controlled to be 100-200 ℃, four temperature ranges of 200-300 ℃, 300-350 ℃, 350-400 ℃ and 400-660 ℃ are arranged in the de-waxing tunnel kiln (3), at least one heat exchange assembly is arranged in the four temperature ranges to control the product to be heated and insulated in the set temperature range, the cracking proportion of the ceramic in the de-waxing process can be reduced and even the de-waxing cracking phenomenon can be eliminated through continuous heating and insulation, the de-waxing speed can be increased from the original same 120 min/top by 45-55 min/top through the arrangement of the temperature ranges, the wax removal efficiency and the production efficiency are improved.
Preferably, the environment-friendly and energy-saving tunnel de-waxing kiln further comprises a high-temperature combustion furnace positioned at the bottom of the kiln, a pipeline and a fan used for driving the pipeline to drain, wherein the inlet of the pipeline is communicated with the de-waxing tunnel kiln, and the outlet of the pipeline is communicated with the inside of the high-temperature combustion furnace. Waste gas generated by naked flame in the wax removal process of the wax removal tunnel kiln is introduced into the high-temperature combustion furnace for secondary combustion, so that the energy conservation and environmental protection are facilitated.
Preferably, the ratio of the length of the preheating tunnel kiln to the length of the de-waxing tunnel kiln is 4: (2-3) ensuring full preheating and effectively reducing the 'internal explosion' phenomenon of the ceramic during sintering.
Preferably, the ratio of the length of the preheating tunnel kiln to the length of the de-waxing tunnel kiln is 1: 0.6.
preferably, the buffer tunnel kiln is positioned in a temperature range of 1000-1030 ℃ of the sintering tunnel kiln, the buffer tunnel kiln is made into an arch shape, the width of the buffer tunnel kiln is widened by 20-30 mm compared with other intervals, the top of the kiln outside the buffer tunnel kiln is made into a flat top, the flow area of the kiln is enlarged, the convection of high-temperature gas is reduced, the temperature stability of different sections is maintained, and the 'inner explosion' of the blank is reduced.
Preferably, the product outlet of the preheating tunnel kiln is directly communicated with the product inlet of the de-waxing tunnel kiln, and a corner is arranged between the preheating tunnel kiln and the de-waxing tunnel kiln, so that the de-waxing open fire can be effectively prevented from spreading to the preheating tunnel kiln.
Preferably, the product outlet of the preheating tunnel kiln is indirectly communicated with the product inlet of the de-waxing tunnel kiln through a corner tunnel kiln, and the preheating tunnel kiln and the de-waxing tunnel kiln are arranged in parallel, so that the de-waxing open fire can be effectively prevented from spreading to the preheating tunnel kiln.
Preferably, the product outlet of the preheating tunnel kiln is indirectly communicated with the product inlet of the de-waxing tunnel kiln through an angle tunnel kiln, and the preheating tunnel kiln and the de-waxing tunnel kiln are arranged in parallel, so that the de-waxing open fire can be effectively prevented from spreading to the preheating tunnel kiln; the product import of sintering tunnel kiln and the product export of wax removal tunnel kiln directly communicate, set up the corner between sintering tunnel kiln and the wax removal tunnel kiln, further reduce the influence of the high temperature in the sintering tunnel kiln to wax removal temperature in the wax removal tunnel kiln.
Preferably, the heat exchange assembly comprises a cooling spiral pipe, a cooling water treatment box, a water inlet pipe, a water outlet pipe and a water pump, the cooling spiral pipe is located at the top of the de-waxing tunnel kiln, a cooling chamber and a sand ice chamber which are communicated in a one-way mode are arranged inside the cooling water treatment box, the cooling chamber is communicated with the water outlet pipe of the cooling spiral pipe, and the sand ice chamber is communicated with the water inlet pipe of the cooling spiral pipe.
Preferably, a stirring rod is arranged in the ice-sand chamber, a blade is arranged on the stirring rod, and a motor for driving the stirring rod to rotate is arranged at the upper end of the cooling water treatment tank.
Preferably, the fixed cover of one end of cooling spiral pipe connects the impeller, the outside of impeller sets up the retaining box, communicate through the bleeder that intakes between inlet tube and the retaining box top, the play water end off-centre of the bleeder that intakes is located the top of impeller, communicate through the bleeder that goes out between the bottom of retaining box and the outlet pipe.
The invention has the beneficial effects that:
1. the environment-friendly and energy-saving tunnel de-waxing kiln is provided with the preheating tunnel kiln to preheat the ceramic green bodies, the heat preservation time of the original low-temperature section is prolonged, meanwhile, a temperature range for continuous temperature rise is arranged in the de-waxing tunnel kiln, the temperature range of the product is effectively controlled to be 100-400-660 ℃ in combination with the temperature range of the preheating tunnel kiln, the product is effectively prevented from being fried in the de-waxing process, the de-waxing efficiency is improved, the production cost is saved, the loss is reduced, and the economic benefit is huge.
2. The buffer tunnel kiln is arranged in the temperature range of 1000-1030 ℃ of the sintering tunnel kiln, the buffer tunnel kiln is made into an arch shape, the width of the buffer tunnel kiln is wider than that of other sections, the flow area of the buffer tunnel kiln is enlarged, the convection of high-temperature gas is reduced, the temperature stability of different sections is maintained, and the 'inner explosion' of the blank is reduced.
3. The environment-friendly and energy-saving tunnel de-waxing kiln is provided with the fan and the pipeline, so that waste gas generated by the high-temperature combustion furnace is introduced into the high-temperature combustion furnace again for secondary combustion, and the environment-friendly and energy-saving tunnel de-waxing kiln is more beneficial to energy conservation and environmental protection.
4. The environment-friendly and energy-saving tunnel de-waxing kiln is provided with corners at the inlet and the outlet of the de-waxing tunnel kiln, so that the temperature stability of the de-waxing tunnel is fully ensured, and the de-waxing effect is ensured.
5. The heat exchange component in the environment-friendly and energy-saving tunnel de-waxing kiln is a spiral cooling pipe, the heat exchange speed can be controlled by controlling the flowing speed of cooling liquid in the cooling pipe so as to control the temperature of the de-waxing kiln, and large-amplitude air flow in the de-waxing kiln can not be caused, so that the stability of the temperature gradient of a de-waxing area is facilitated.
6. The heat exchange assembly in the environment-friendly and energy-saving tunnel de-waxing kiln takes ice-water mixed liquid with ice particles as cooling liquid, so that the cooling effect is improved.
Drawings
FIG. 1 is a schematic top view of a tunnel de-waxing kiln in accordance with example 1;
FIG. 2 is a schematic structural diagram of the side surface of the tunnel de-waxing kiln;
FIG. 3 is a schematic structural view of the front side of a de-waxing tunnel kiln in the tunnel de-waxing kiln;
FIG. 4 is a schematic structural diagram of a first heat exchange assembly;
FIG. 5 is a schematic structural diagram of a second heat exchange assembly;
FIG. 6 is a schematic view of the impeller of the second heat exchange assembly;
FIG. 7 is a distribution diagram of the tunnel de-waxing kiln in the embodiment 2;
FIG. 8 is a distribution diagram of the tunnel de-waxing kiln in example 3;
fig. 9 is a distribution diagram of the tunnel de-waxing kiln in example 4.
In the figure: 1. a loading area; 2. preheating a tunnel kiln; 3. a de-waxing tunnel kiln; 4. sintering the tunnel kiln; 5. a buffer tunnel kiln; 6. a corner tunnel kiln; 7. a heat exchange assembly; 8. a high temperature combustion furnace; 9. a pipeline; 10. a fan; 71. cooling the spiral pipe; 72. a cooling water treatment tank; 73. a water outlet pipe; 74. a water inlet pipe; 75. a motor; 76. a water pump; 711. an impeller; 712. a water storage box; 713. a water inlet branch pipe; 714. a water outlet branch pipe; 721. a cooling chamber; 722. a sand ice chamber; 723. a stirring rod; 724. a blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1 and 2, an environmental protection and energy saving tunnel dewaxing kiln, including the loading space 1 of straight line distribution, preheat tunnel kiln 2, dewaxing tunnel kiln 3 and sintering tunnel kiln 4, preheat tunnel kiln 2 with the product entry end intercommunication of dewaxing tunnel kiln 3, sintering tunnel kiln 4 with the product output end intercommunication of dewaxing tunnel kiln 3, loading space 1, preheat tunnel kiln 2, dewaxing tunnel kiln 3 and sintering tunnel kiln 4 share one and advance the subassembly, advance the transportation piece that the subassembly is used for kiln transportation sintering alms bowl among the prior art. Wherein the length of charging area 1 is 3 meters, the length of preheating tunnel kiln 2 is 7 meters, the length of de-waxing tunnel kiln 3 is 4.2 meters, wherein the length of medium temperature de-waxing area is 1.2 meters, sintering tunnel kiln 4 is 11 meters, in this embodiment, the ratio of the length of preheating tunnel kiln 2 to the length of de-waxing tunnel kiln 3 is 1: 0.6 ensures the full preheating and effectively reduces the 'inner explosion' phenomenon of the ceramic during sintering.
Further, a buffer tunnel kiln 5 is arranged in the sintering tunnel kiln 4, the buffer tunnel kiln 5 is located in the temperature range of 1000-1030 ℃ of the sintering tunnel kiln 4, the buffer tunnel kiln 5 is arched, the width of the buffer tunnel kiln is 20-30 mm wider than that of other sections, the top of the kiln outside the buffer tunnel kiln 5 is flat, the flow area of the kiln is enlarged, convection of high-temperature gas is reduced, temperature stability of different sections is maintained, and 'inner explosion' of the blank is reduced.
In this embodiment, four thermocouples are arranged inside the kiln, and the thermocouples are respectively arranged at the product inlet of the preheating tunnel kiln 2, the product inlet of the de-waxing tunnel kiln 3, the product inlet of the buffering tunnel kiln 5, and the product inlet of the sintering tunnel kiln 4, and are used for measuring the temperature at these positions.
In the embodiment, the temperature inside the preheating tunnel kiln 2 is controlled to be 100-200 ℃, four temperature ranges of 200-300 ℃, 300-350 ℃, 350-400 ℃ and 400-660 ℃ are arranged inside the de-waxing tunnel kiln 3, the temperature range of 400-660 ℃ is a medium-temperature de-waxing zone, at least one heat exchange assembly 7 is arranged inside the four temperature ranges to control the product to be heated and insulated in the set temperature range, and the cracking proportion of the ceramic in the de-waxing process can be reduced or even the de-waxing cracking phenomenon can be eliminated through continuous heating and insulation. In the production practice, the temperature interval is set, the room wax removal speed is increased from the original 120 min/top lifting value of the same line to 45-55 min/top, and the wax removal efficiency and the production efficiency are improved.
Referring to fig. 2 and fig. 3, further, the environment-friendly and energy-saving tunnel de-waxing kiln further comprises a high-temperature combustion furnace 8 located at the bottom of the kiln, a pipeline 9 and a fan 10 for actuating the drainage of the pipeline 9, wherein an inlet of the pipeline 9 is communicated with the de-waxing tunnel kiln 3, an outlet of the pipeline 9 is communicated with the inside of the high-temperature combustion furnace 8, and waste gas generated by naked flame in the de-waxing process of the de-waxing tunnel kiln 3 is introduced into the high-temperature combustion furnace 8 for secondary combustion, which is more beneficial to energy conservation and environmental protection.
Referring to fig. 3 and 4, in the embodiment, the heat exchange assembly 7 includes a cooling coil 71, a cooling water treatment tank 72, a water inlet pipe 73, a water outlet pipe 74 and a water pump 76, the cooling coil 71 is located at the top of the de-waxing tunnel kiln 3, a cooling chamber 721 and a sand and ice chamber 722 which are communicated in a one-way mode are arranged inside the cooling water treatment tank 72, the cooling chamber 721 is communicated with the water outlet pipe 74 of the cooling coil 71, the sand and ice chamber 722 is communicated with the water inlet pipe 73 of the cooling coil 71, and the water pump 76 is installed on the water outlet pipe 74. The refrigeration components are arranged outside the cooling chamber 721 and the ice-sand chamber 722, the refrigeration components refer to the refrigeration component part of the refrigerator in the prior art, the temperature of the cooling chamber 721 is controlled to be 10-15 ℃, the cooling chamber 721 cools water passing through the cooling spiral pipe 71, and the temperature of the cooling chamber 721 is controlled to be-10-0 ℃, so that the ice-sand chamber 722 performs 'semi-cooling' on cold water in the cooling chamber 721.
Further, a stirring rod 723 is arranged inside the ice-sand chamber 722, a blade 724 is arranged on the stirring rod 723, a motor 75 for driving the stirring rod 723 to rotate is arranged at the upper end of the cooling water treatment tank 72, the motor 75 can drive the stirring rod 723 to rotate, and the stirring rod 723 can drive the blade 724 to move to cut and stir ice blocks in water, so that an ice-water mixture is formed in the ice-sand chamber 722, and the formation of ice blocks is prevented.
The heat exchange component in the environment-friendly and energy-saving tunnel de-waxing kiln is the spiral cooling pipe 71, the heat exchange speed can be controlled by controlling the flowing speed of cooling liquid in the cooling pipe so as to control the temperature of the de-waxing kiln, and large-amplitude air flow in the de-waxing kiln can not be caused, so that the stability of the temperature gradient of a de-waxing area is facilitated; and the heat exchange assembly takes ice-water mixed liquid with ice particles as cooling liquid, and the ice is changed into water by heat as a heat absorption process, so that the cooling effect is good.
Example 2
In this embodiment, referring to fig. 7, the product outlet of the preheating tunnel kiln 2 is directly communicated with the product inlet of the de-waxing tunnel kiln 3, and a corner is arranged between the preheating tunnel kiln 2 and the de-waxing tunnel kiln 3, so that the de-waxing open fire can be effectively prevented from spreading to the preheating tunnel kiln 2, and the stability of the preheating temperature of the preheating tunnel kiln 2 is maintained.
Example 3
In this embodiment, referring to fig. 8, the product outlet of the preheating tunnel kiln 2 is indirectly communicated with the product inlet of the de-waxing tunnel kiln 3 through the corner tunnel kiln 6, and the preheating tunnel kiln 2 and the de-waxing tunnel kiln 3 are arranged in parallel, so that the de-waxing open flame can be effectively prevented from spreading to the preheating tunnel kiln 2.
Example 4
In this embodiment, referring to fig. 9, the product outlet of the preheating tunnel kiln 2 is indirectly communicated with the product inlet of the de-waxing tunnel kiln 3 through the corner tunnel kiln 6, and the preheating tunnel kiln 2 and the de-waxing tunnel kiln 3 are arranged in parallel, so that the de-waxing open flame can be effectively prevented from spreading to the preheating tunnel kiln 2; the product inlet of the sintering tunnel kiln 4 is directly communicated with the product outlet of the de-waxing tunnel kiln 3, and a corner is arranged between the sintering tunnel kiln 4 and the de-waxing tunnel kiln 3, so that the influence of high temperature in the sintering tunnel kiln 4 on de-waxing temperature in the de-waxing tunnel kiln 3 is further reduced.
In this embodiment, the inlet and the outlet of the de-waxing tunnel kiln 3 are both provided with corners, so that the temperature stability of the de-waxing tunnel is fully ensured, and the de-waxing effect is ensured.
Example 5
Different from the embodiment 1, referring to fig. 5 and 6, two ends of the cooling spiral pipe 71 in this embodiment are connected with the water inlet pipe 73 and the water outlet pipe 74 in a rotating and sealing manner, one end of the cooling spiral pipe 71 is fixedly sleeved with an impeller 711, a water storage box 712 is arranged outside the impeller 711, the water inlet pipe 73 is communicated with the top of the water storage box 712 through a water inlet branch pipe 713, the water outlet end of the water inlet branch pipe 713 is eccentrically located above the impeller 711, and the bottom of the water storage box 712 is communicated with the water outlet pipe 74 through a water outlet branch pipe 714.
In this embodiment, the ice-water mixture of the water inlet pipe 73 hits the impeller 711 through the water inlet branch pipe 713, and the impeller 711 is pushed to rotate, so that the cooling spiral pipe 71 is triggered to rotate, the gas in the de-waxing tunnel kiln 3 can be stirred slightly, and the cooling efficiency is accelerated. In actual production, a radiating fin can be added outside the cooling spiral pipe 71 to enhance heat exchange and slightly stir air, so that the heat exchange efficiency is further improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The environment-friendly energy-saving tunnel de-waxing kiln is characterized by comprising a loading area (1), a preheating tunnel kiln (2), a de-waxing tunnel kiln (3) and a sintering tunnel kiln (4), wherein the preheating tunnel kiln (2) is communicated with a product inlet end of the de-waxing tunnel kiln (3), the sintering tunnel kiln (4) is communicated with a product outlet end of the de-waxing tunnel kiln (3), and a buffering tunnel kiln (5) is arranged inside the sintering tunnel kiln (4);
the device is characterized in that four thermocouples are arranged inside the kiln, the thermocouples are respectively arranged at a product inlet of the preheating tunnel kiln (2), a product inlet of the de-waxing tunnel kiln (3), a medium-temperature de-waxing inlet of the de-waxing tunnel kiln (3) and a product inlet of the sintering tunnel kiln (4), the temperature inside the preheating tunnel kiln (2) is controlled to be 100-200 ℃, four temperature ranges of 200-300 ℃, 300-350 ℃, 350-400 ℃ and 400-660 ℃ are arranged inside the de-waxing tunnel kiln (3), and at least one heat exchange assembly (7) is arranged inside the four temperature ranges to control the product to be heated and insulated in the set temperature range.
2. An environment-friendly and energy-saving tunnel de-waxing kiln as claimed in claim 1, further comprising a high temperature combustion furnace (8) at the bottom of the kiln, a pipeline (9) and a fan (10) for driving the pipeline (9) to flow, wherein the inlet of the pipeline (9) is communicated with the de-waxing tunnel kiln (3), and the outlet of the pipeline (9) is communicated with the inside of the high temperature combustion furnace (8).
3. The environment-friendly energy-saving tunnel de-waxing kiln as claimed in claim 1, wherein the ratio of the length of the preheating tunnel kiln (2) to the length of the de-waxing tunnel kiln (3) is 4: (2-3).
4. An environment-friendly and energy-saving tunnel de-waxing kiln as claimed in claim 3, wherein the ratio of the length of the preheating tunnel kiln (2) to the length of the de-waxing tunnel kiln (3) is 1: 0.6.
5. the environment-friendly and energy-saving tunnel de-waxing kiln as claimed in claim 1, 2, 3 or 4, wherein the top of the buffering tunnel kiln (5) is made into an arch shape and the width of the arch shape is 20mm-30mm wider than other intervals, and the top of the kiln outside the buffering tunnel kiln (5) is made into a flat top.
6. An environment-friendly and energy-saving tunnel dewaxing kiln according to claim 1, 2, 3 or 4, wherein a product outlet of the preheating tunnel kiln (2) is directly communicated with a product inlet of the dewaxing tunnel kiln (3), and a corner is arranged between the preheating tunnel kiln (2) and the dewaxing tunnel kiln (3).
7. An environment-friendly and energy-saving tunnel dewaxing kiln as claimed in claim 1, 2, 3 or 4, wherein the product outlet of the preheating tunnel kiln (2) is indirectly communicated with the product inlet of the dewaxing tunnel kiln (3) through a corner tunnel kiln (6), and the preheating tunnel kiln (2) and the dewaxing tunnel kiln (3) are arranged in parallel.
8. The environment-friendly energy-saving tunnel de-waxing kiln as claimed in claim 1, 2, 3 or 4, wherein the product outlet of the preheating tunnel kiln (2) is indirectly communicated with the product inlet of the de-waxing tunnel kiln (3) through a corner tunnel kiln (6), and the preheating tunnel kiln (2) and the de-waxing tunnel kiln (3) are arranged in parallel; the product inlet of the sintering tunnel kiln (4) is directly communicated with the product outlet of the de-waxing tunnel kiln (3), and a corner is arranged between the sintering tunnel kiln (4) and the de-waxing tunnel kiln (3).
9. An environment-friendly and energy-saving tunnel de-waxing kiln as claimed in claim 1, 2, 3 or 4, wherein said heat exchange assembly (7) comprises a cooling coil (71), a cooling water treatment box (72), a water inlet pipe (73), a water outlet pipe (74) and a water pump (76), said cooling coil (71) is located at the top of the de-waxing tunnel kiln (3), a cooling chamber (721) and a sand ice chamber (722) which are communicated in one direction are arranged in the cooling water treatment box (72), said cooling chamber (721) is communicated with the water outlet pipe (74) of the cooling coil (71), and said sand ice chamber (722) is communicated with the water inlet pipe (73) of the cooling coil (71).
10. The environmentally-friendly and energy-saving tunnel de-waxing kiln as claimed in claim 9, wherein one end of the cooling spiral pipe (71) is fixedly sleeved with an impeller (711), a water storage box (712) is arranged outside the impeller (711), the water inlet pipe (73) is communicated with the top of the water storage box (712) through a water inlet branch pipe (713), the water outlet end of the water inlet branch pipe (713) is eccentrically located above the impeller (711), and the bottom of the water storage box (712) is communicated with the water outlet pipe (74) through a water outlet branch pipe (714).
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| CN202010528515.4A CN111637742A (en) | 2020-06-11 | 2020-06-11 | Environment-friendly energy-saving tunnel de-waxing kiln |
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| CN202010528515.4A CN111637742A (en) | 2020-06-11 | 2020-06-11 | Environment-friendly energy-saving tunnel de-waxing kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115406229A (en) * | 2022-08-16 | 2022-11-29 | 贵州新园特种陶瓷科技有限公司 | High-temperature de-waxing kiln for ceramics |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201885572U (en) * | 2010-11-25 | 2011-06-29 | 广东风华高新科技股份有限公司 | MLCC (multilayer ceramic capacitor) atmosphere tunnel firing furnace completing rubber removal and firing once |
| CN106881733A (en) * | 2017-02-24 | 2017-06-23 | 东莞信柏结构陶瓷股份有限公司 | ceramic gravure knife and preparation method thereof |
| CN107098708A (en) * | 2017-06-11 | 2017-08-29 | 新化县群华陶瓷科技有限公司 | Novel environment friendly dewaxing and sintering kiln and its dewaxing and sintering technique |
| CN207787970U (en) * | 2017-09-28 | 2018-08-31 | 惠州市铭优机械设备有限公司 | A kind of metal ultra-sonic welding machine |
| CN207936746U (en) * | 2017-12-21 | 2018-10-02 | 新化县新园电子陶瓷有限公司 | Kiln for ceramic post sintering de-waxing |
| CN108692567A (en) * | 2018-03-30 | 2018-10-23 | 中国电子科技集团公司第四十八研究所 | A kind of nickelic ternary material sintering furnace dumping section furnace body of lithium battery and sintering furnace |
-
2020
- 2020-06-11 CN CN202010528515.4A patent/CN111637742A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201885572U (en) * | 2010-11-25 | 2011-06-29 | 广东风华高新科技股份有限公司 | MLCC (multilayer ceramic capacitor) atmosphere tunnel firing furnace completing rubber removal and firing once |
| CN106881733A (en) * | 2017-02-24 | 2017-06-23 | 东莞信柏结构陶瓷股份有限公司 | ceramic gravure knife and preparation method thereof |
| CN107098708A (en) * | 2017-06-11 | 2017-08-29 | 新化县群华陶瓷科技有限公司 | Novel environment friendly dewaxing and sintering kiln and its dewaxing and sintering technique |
| CN207787970U (en) * | 2017-09-28 | 2018-08-31 | 惠州市铭优机械设备有限公司 | A kind of metal ultra-sonic welding machine |
| CN207936746U (en) * | 2017-12-21 | 2018-10-02 | 新化县新园电子陶瓷有限公司 | Kiln for ceramic post sintering de-waxing |
| CN108692567A (en) * | 2018-03-30 | 2018-10-23 | 中国电子科技集团公司第四十八研究所 | A kind of nickelic ternary material sintering furnace dumping section furnace body of lithium battery and sintering furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115406229A (en) * | 2022-08-16 | 2022-11-29 | 贵州新园特种陶瓷科技有限公司 | High-temperature de-waxing kiln for ceramics |
| CN115406229B (en) * | 2022-08-16 | 2024-01-09 | 贵州新园特种陶瓷科技有限公司 | High-temperature wax removal kiln for ceramics |
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