CN209763710U - High-power high-temperature electric heating air furnace for drying nonmetal mineral powder - Google Patents
High-power high-temperature electric heating air furnace for drying nonmetal mineral powder Download PDFInfo
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- CN209763710U CN209763710U CN201920054936.0U CN201920054936U CN209763710U CN 209763710 U CN209763710 U CN 209763710U CN 201920054936 U CN201920054936 U CN 201920054936U CN 209763710 U CN209763710 U CN 209763710U
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Abstract
The utility model discloses a nonmetal powdered ore is dried and is used high-power high temperature electric air heater relates to electric furnace equipment technical field, including air inlet air-blower and electric air heater furnace body, the one end of electric air heater furnace body is equipped with air inlet end interface, and air inlet end interface and air inlet air-blower connection, air inlet end interface are equipped with air inlet end temperature sensor, and the other end of electric air heater furnace body is equipped with the air outlet end interface, and air outlet end interface department is equipped with air-out end thermocouple, and the outside of electric air heater furnace body is equipped with electric air heater power connection box, and the inside of electric air heater furnace body is equipped with heating element heating module. The utility model discloses can be in the long-time normal use of high temperature environment more than 550 ℃, whole equipment size is little, and the heat loss rate is low, and is insensitive to the environment dust, has solved traditional electric stove service temperature and has exceeded 550 ℃ after, and life and reliability seriously descend's problem has improved the air inlet mode of traditional electric stove simultaneously, has avoided the overheated damage problem of equipment because of the higher equipment that leads to of environment dust concentration.
Description
Technical Field
The utility model relates to an electric furnace equipment technical field, in particular to nonmetal powdered ore is dried and is used high-power high temperature electric hot-blast stove.
Background
In the prior art, the main drying heat source is mostly non-clean energy such as coal and the like in the non-metal ore dressing drying process. With the increasingly strict national environmental protection requirements, non-clean energy sources such as coal and the like are gradually eliminated, only a few of power sources, natural gas, gasoline and the like which can simultaneously meet the environmental protection requirements can be substituted for the coal energy sources at present, and only electric heating sources can be applied in practical application, particularly in areas with high environmental protection standard requirements, so that most of adopted corresponding equipment is electric heating air furnaces.
A high-power high-temperature electric heating air furnace for drying non-metal mineral powder is a device which uses a high-temperature resistance element to generate high temperature and uses air as a carrier to dry the non-metal mineral powder under specific drying conditions. Traditional electrothermal tube heating hot-blast furnace, in the use, the inside resistance wire of electric heating pipe heating element is usually thinner (generally no longer than 1 mm), and outside inoxidizing coating (magnesium oxide coating) is generally thicker, when high temperature uses (the temperature is greater than 550 ℃), inside resistance wire just reaches peak temperature 950 ℃ very easily, very easily damages, when single electrothermal furnace heating power exceeded more than 500KW simultaneously, equipment volume can be bigger than great, the preparation difficulty, the heat loss is very big. In addition, when the electric hot blast stove is applied to drying nonmetal mineral powder, dust in the environment easily enters the electric hot blast stove and is deposited on the surface of the heating pipe, even embeds the heating pipe, and the heating pipe is damaged due to overheating. Therefore, the electric hot blast stove can be normally used in a high-temperature environment of more than 550 ℃ for a long time, the whole equipment has small size and low heat loss rate, and the electric hot blast stove is insensitive to environmental dust, so that the application problem of the non-metal mineral powder in the prior art on the heat source drying equipment can be effectively solved.
Disclosure of Invention
According to the not enough of above prior art, the utility model discloses the technical problem that will solve is: the utility model provides a nonmetal powdered ore is dried and is used high-power high temperature electric hot-blast stove, can be in the long-time normal use of the high temperature environment of above 550 ℃, whole equipment size is little, the heat loss rate is low, and insensitive to the environmental dust, in order to solve after traditional electric stove service temperature exceeded 550 ℃, life and reliability seriously descend the problem, improved the air inlet mode of traditional electric hot-blast stove simultaneously, when having avoided nonmetal powdered ore to dry, because of the higher easy collection dirt of environmental dust concentration appears the overheated problem of damaging of equipment in the inside electric hot-blast.
in order to solve the technical problem, the technical scheme of the utility model is that:
A high-power high-temperature electric hot blast stove for drying nonmetal mineral powder comprises an air inlet blower and an electric hot blast stove body, wherein an air inlet end interface is arranged at one end of the electric hot blast stove body and is connected with the air inlet blower, an air inlet end temperature sensor is arranged at the air inlet end interface, an air outlet end interface is arranged at the other end of the electric hot blast stove body, an air outlet end thermocouple is arranged at the air outlet end interface, an electric hot blast stove power connection box is arranged on the outer side of the electric hot blast stove body, and a heating element heating module is arranged inside the electric hot blast stove body; the heating element heating module comprises a modular fixed support, the upper end and the lower end of the modular fixed support are provided with cross beams, the lower end of the cross beams is provided with a bottom air inlet screen plate, the upper end of the cross beams is provided with a top air outlet screen plate, the two ends of the cross beams are respectively connected with longitudinal beams, the two ends of the cross beams are uniformly provided with a plurality of supporting rods, the two ends of each supporting rod are respectively arranged on the cross beams, a heating element supporting tube is sleeved on each supporting rod, a heating element is sleeved on each heating element supporting tube and is provided with a heating element, the heating element is an iron-chromium-nickel-based resistance winding wire or a silicon-molybdenum rod, the heating element is connected with an electric connection threaded rod, the two outer sides of the longitudinal beams are respectively provided with a guide groove.
As an improved scheme, both ends of the heating element are provided with insulating ceramic tube top sleeves, and the insulating ceramic tube top sleeves are sleeved on the heating element supporting tubes.
As an improved scheme, the insulating ceramic pipe top sleeve is a high-aluminum insulating ceramic pipe top sleeve.
As an improved scheme, a ceramic lead pipe is arranged on the cross beam at the lower end, and the electric connection threaded rod penetrates through the ceramic lead pipe to be connected with the electric heating air furnace electric connection box.
As a modification, the ceramic lead tube is a high-aluminum ceramic lead tube.
As an improved scheme, the supporting rods are round steel rods, high-aluminum ceramic layers are arranged on the outer sides of the round steel rods, and the heating element supporting tubes are insulating high-aluminum heating element supporting tubes.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
The utility model relates to a nonmetal powdered ore is dried and is used high-power high temperature electric air heater, including air inlet air-blower and electric air heater furnace body, the one end of electric air heater furnace body is equipped with air inlet end interface, and air inlet end interface and air inlet air-blower are connected, and air inlet end kneck is equipped with air inlet end temperature sensor, and the other end of electric air heater furnace body is equipped with the air outlet end interface, and air outlet end interface department is equipped with air outlet end thermocouple, and the outside of electric air heater furnace body is equipped with electric air heater power connection box, and the inside of electric air heater furnace body is equipped with heating element. Heating element heating module is on heating element, adopt high temperature resistance wire winding material 25Cr20Ni (the operating temperature is the highest 850 ℃) when conventional operation requires, heating element adopts the silicon molybdenum bar (the operating temperature is the highest 1700 ℃) when extreme high temperature requires, adopt high aluminum pipe to hang in the stove, change the hot-blast mode of traditional electrothermal tube indirect heating, adopt heating element direct contact air to heat, make heating element temperature and air-out temperature difference greatly reduce in 120 ℃, make electrothermal element operating temperature far less than the highest operating temperature of electrothermal element, be difficult for the scaling loss, increase of service life. In the application design of non-metal mineral powder drying, the mode of bottom screen plate air supply and top screen plate air outlet is adopted, so that dust entering the furnace body along with an air blower can not be deposited in the furnace body, and the problem of overheating fault of an electric heating element caused by accumulation of dust at the bottom of a traditional electric heating air furnace is thoroughly solved.
The utility model discloses heating element heats the module and includes the modularization fixed bolster, the upper and lower both ends of modularization fixed bolster are equipped with the crossbeam, the below of lower extreme crossbeam is equipped with bottom air inlet otter board, the top of upper end crossbeam is equipped with top air-out otter board, the both ends of two crossbeams are connected with the longeron respectively, evenly be equipped with many spinal branchs vaulting pole between two crossbeams, the both ends of bracing piece set up on the crossbeam respectively, the cover is equipped with the heating element stay tube on the bracing piece, the cover is equipped with heating element on the heating element stay tube, heating element is iron chromium nickel base resistance wire winding or silicon molybdenum rod, heating element is connected with the electric thread stick, the outside of two longerons all is equipped. The heating element heating module adopts a modularized fixed support, the outer side of a longitudinal beam of the fixed support is provided with a guide groove, and a guide rail is arranged on the furnace wall, so that the electric furnace wire installation mode of the traditional pipeline type electric hot blast stove is thoroughly changed, a furnace wire installation air channel is not required to be built by refractory bricks, the equipment volume and the manufacturing cost are reduced, meanwhile, the modularized fixed support adopts a drawing and fixing mode, the maintenance difficulty is reduced, the maintenance and the replacement are convenient, the module exchange of a high-temperature area and a low-temperature area is convenient, and the service life of the equipment is prolonged.
To sum up, the utility model relates to a nonmetal powdered ore is dried and is used high-power high temperature electric hot-air furnace can be in the long-time normal use of high temperature environment more than 550 ℃, whole equipment size is little, the heat loss rate is low, and insensitive to the environmental dust, it exceeds 550 ℃ after to have solved traditional electric stove service temperature, life and the serious problem that descends of reliability, improved the air inlet mode of traditional electric hot-air furnace simultaneously, when the nonmetal powdered ore is dried, because of the higher easy collection dirt of environmental dust concentration problem that equipment overheat damage appears that leads to the electric hot-air inside.
Drawings
FIG. 1 is a schematic structural view of a high-power high-temperature electric hot air furnace for drying nonmetallic ore powder;
FIG. 2 is a schematic view of the internal structure of a high-power high-temperature electric hot air furnace for drying nonmetallic ore powder;
In the figure, the arrow direction is the furnace wind moving direction in the electric hot wind furnace body;
In the figure: 1-an air inlet blower, 2-an electric hot blast stove body, 3-an air inlet end interface, 4-an air inlet end temperature sensor, 5-an air outlet end interface, 6-an air outlet end thermocouple, 7-an electric hot blast stove power connection box, 8-a heating element heating module, 81-a cross beam, 82-a longitudinal beam, 83-a guide groove, 84-an insulating ceramic pipe top sleeve, 85-a support rod, 86-a heating element support pipe, 87-a heating element, 88-a ceramic lead pipe, 89-an electric connection threaded rod, 9-a guide rail, 10-a bottom air inlet screen plate and 11-a top air outlet screen plate.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
As shown in fig. 1 and 2, the utility model relates to a high-power high-temperature electric air heater for drying nonmetal mineral powder, which comprises an air inlet blower 1 and an electric air heater furnace body 2, wherein one end of the electric air heater furnace body 2 is provided with an air inlet end interface 3, the air inlet end interface 3 is connected with the air inlet blower 1, an air inlet end temperature sensor 4 is arranged at the air inlet end interface 3, an air outlet end interface 5 is arranged at the other end of the electric air heater furnace body 2, an air outlet end thermocouple 6 is arranged at the air outlet end interface 5, an electric air heater power connection box 7 is arranged outside the electric air heater furnace body 2, and a heating element heating module 8 is arranged inside the electric air heater furnace body 2; the heating element heating module 8 comprises a modular fixed support, the upper end and the lower end of the modular fixed support are provided with cross beams 81, the lower portion of the lower end cross beam 81 is provided with a bottom air inlet screen plate 10, the top of the upper end cross beam 81 is provided with a top air outlet screen plate 11, the two ends of the two cross beams 81 are respectively connected with longitudinal beams 82, a plurality of support rods 85 are uniformly arranged between the two cross beams 81, the two ends of each support rod 85 are respectively arranged on the cross beams 81, a heating element support tube 86 is sleeved on each support rod 85, a heating element 87 is sleeved on each heating element support tube 86, each heating element 87 is an iron-chromium-nickel-based resistance wire winding or a silicon-molybdenum rod, each heating element 87 is connected with an electric connection threaded rod 89, the outer sides of the two longitudinal beams 82 are respectively.
The heating element heating module 8 is selected from the heating elements 87, a high-temperature resistance wire winding material 25Cr20Ni (the highest using temperature is 850 ℃) is adopted when the normal use requirement is met, a silicon-molybdenum rod (the highest using temperature is 1700 ℃) is adopted as the heating element when the extreme high-temperature requirement is met, a high-aluminum pipe is hung in the furnace, the traditional mode that the electric heating pipe indirectly heats hot air is changed, the heating element 87 directly contacts with air to heat, the difference value between the temperature of the heating element 87 and the air outlet temperature is greatly reduced to be within 120 ℃, the working temperature of the heating element 87 is far lower than the highest using temperature of the heating element 87, burning loss is not prone to occurring, and the service life. In the design of non-metal mineral powder drying application, the mode of air supply by the bottom air inlet screen plate 10 and air outlet by the top air outlet screen plate 11 is adopted, so that dust entering the interior of the electric hot blast stove body 2 along with the air inlet blower 1 cannot be deposited in the interior of the stove body, and the problem of overheating faults of an electric heating element caused by accumulation of dust at the bottom of the traditional electric hot blast stove is thoroughly solved.
The heating element heating module 8 adopts a modularized fixed support, a guide groove 83 is arranged on the outer side of a longitudinal beam 82 of the fixed support, and a guide rail 9 is arranged on the furnace wall, so that the electric furnace wire installation mode of the traditional pipeline type electric hot blast stove is thoroughly changed, a furnace wire installation air channel is not required to be built by refractory bricks, the equipment volume and the manufacturing cost are reduced, meanwhile, the modularized fixed support adopts a drawing and fixing mode, the maintenance difficulty is reduced, the maintenance and the replacement are convenient, the module exchange of a high-temperature area and a low-temperature area is convenient, and the service life of the equipment is prolonged.
Both ends of the heating element 87 are provided with insulating ceramic tube top sleeves 84, and the insulating ceramic tube top sleeves 84 are sleeved on the heating element support tubes 86.
The insulating ceramic tube top sleeve 84 is a high-alumina insulating ceramic tube top sleeve.
Both ends of the heating element 87 are provided with high-aluminum insulating ceramic tube top sleeves, and the high-aluminum insulating ceramic tube top sleeves can fix the heating element 87 on the heating element supporting tube 86, so that the heating element 87 is prevented from contacting with a fixed support or shaking left and right, and the heating element 87 and the fixed support form safe arc connection.
The lower end beam 81 is provided with a ceramic lead tube 88, and an electric connection threaded rod 89 passes through the ceramic lead tube 88 to be connected with the electric connection box 7 of the electric heating air furnace.
The ceramic lead tube 88 is a high aluminum ceramic lead tube.
The support rod 85 is a round steel rod, a high-aluminum ceramic layer is arranged on the outer side of the round steel rod, and the heating element support tube 86 is an insulating high-aluminum heating element support tube.
the utility model relates to a nonmetal powdered ore is dried with high-power high temperature electric hot air furnace, through the actual installation effect feedback of multi-user, at specific service environment: the high use temperature range is 550 ℃ and 800 ℃, the dust content of high air is more than 150mg/m during the process of cultivating the equipment continuously for 3000 hours, the failure rate is zero, and the thickness of dust accumulated at the bottom of the air inlet duct area in the equipment is less than 1.2mm through the detection of overhauling and starting up; the heating element suspension area has no dust collection; the air outlet duct area has no dust accumulation and good application effect.
The utility model relates to a nonmetal powdered ore is dried and is used high-power high temperature electric hot air heater, can be in the long-time normal use of high temperature environment more than 550 ℃, whole equipment size is little, the heat loss rate is low, and insensitive to the environmental dust, it exceeds 550 ℃ after to have solved traditional electric stove service temperature, the problem that life and reliability seriously descend, the improvement has been made to the air inlet mode of traditional electric hot air heater simultaneously, when nonmetal powdered ore is dried, because of the higher easy album dirt problem that appears equipment overheat damage of the inside electric hot air that leads to of environmental dust concentration.
The above embodiments are intended to illustrate the technical idea and features of the present invention, and only serve as examples, and should not be taken as limitations of the scope of the present invention.
Claims (6)
1. The utility model provides a nonmetal powdered ore is dried with high-power high temperature electric hot air heater, includes air inlet blower and electric hot air heater furnace body, its characterized in that: an air inlet end interface is arranged at one end of the electric air furnace body and is connected with the air inlet blower, an air inlet end temperature sensor is arranged at the air inlet end interface, an air outlet end interface is arranged at the other end of the electric air furnace body, an air outlet end thermocouple is arranged at the air outlet end interface, an electric air furnace power connection box is arranged on the outer side of the electric air furnace body, and a heating element heating module is arranged inside the electric air furnace body; the heating element heating module comprises a modular fixed support, the upper end and the lower end of the modular fixed support are provided with cross beams, the lower end of the cross beams is provided with a bottom air inlet screen plate, the upper end of the cross beams is provided with a top air outlet screen plate, the two ends of the cross beams are respectively connected with longitudinal beams, the two ends of the cross beams are uniformly provided with a plurality of supporting rods, the two ends of each supporting rod are respectively arranged on the cross beams, a heating element supporting tube is sleeved on each supporting rod, a heating element is sleeved on each heating element supporting tube and is provided with a heating element, the heating element is an iron-chromium-nickel-based resistance winding wire or a silicon-molybdenum rod, the heating element is connected with an electric connection threaded rod, the two outer sides of the longitudinal beams are respectively provided with a guide groove.
2. The high-power high-temperature electric heating air furnace for drying the non-metal mineral powder according to claim 1, which is characterized in that: and insulating ceramic tube top sleeves are arranged at two ends of the heating element and sleeved on the heating element supporting tube.
3. The high-power high-temperature electric heating air furnace for drying the non-metal mineral powder according to claim 2, characterized in that: the insulating ceramic tube top sleeve is a high-aluminum insulating ceramic tube top sleeve.
4. The high-power high-temperature electric heating air furnace for drying the non-metal mineral powder according to claim 3, characterized in that: the lower end is provided with a ceramic lead pipe on the cross beam, and the electric connection threaded rod penetrates through the ceramic lead pipe to be connected with the electric connection box of the electric heating air furnace.
5. The high-power high-temperature electric heating air furnace for drying the non-metal mineral powder according to claim 4, characterized in that: the ceramic lead tube is a high-aluminum ceramic lead tube.
6. the high-power high-temperature electric heating air furnace for drying the non-metal mineral powder according to claim 5, characterized in that: the bracing piece is the round steel pole, the outside of round steel pole is equipped with high aluminium ceramic layer, the heating element stay tube is insulating high aluminium heating element stay tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920054936.0U CN209763710U (en) | 2019-01-14 | 2019-01-14 | High-power high-temperature electric heating air furnace for drying nonmetal mineral powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920054936.0U CN209763710U (en) | 2019-01-14 | 2019-01-14 | High-power high-temperature electric heating air furnace for drying nonmetal mineral powder |
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| Publication Number | Publication Date |
|---|---|
| CN209763710U true CN209763710U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920054936.0U Active CN209763710U (en) | 2019-01-14 | 2019-01-14 | High-power high-temperature electric heating air furnace for drying nonmetal mineral powder |
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| CN (1) | CN209763710U (en) |
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