CN112146432B - Electric heating kiln body structure with built-in spiral track propulsion groove - Google Patents
Electric heating kiln body structure with built-in spiral track propulsion groove Download PDFInfo
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- CN112146432B CN112146432B CN201910559398.5A CN201910559398A CN112146432B CN 112146432 B CN112146432 B CN 112146432B CN 201910559398 A CN201910559398 A CN 201910559398A CN 112146432 B CN112146432 B CN 112146432B
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- electric heating
- fan
- furnace
- kiln body
- furnace body
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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
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/32—Arrangement of devices for charging
- F27B7/3205—Charging
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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
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
-
- 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
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating 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
- F27D1/00—Casings; Linings; Walls; Roofs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses an electric heating kiln body structure with a built-in spiral track propulsion groove, which comprises an outer layer kiln body, a middle layer kiln body and an inner layer kiln body, wherein the outer wall of the middle layer kiln body is covered with the outer layer kiln body, the inner wall is provided with the inner layer kiln body in a fitting way, the middle layer kiln body is divided into a preheating zone, a heating zone and a heat recovery zone from front to back, a first electric heating pipe is penetrated in the preheating zone, a second electric heating pipe is penetrated in the heating zone, a water pipe is penetrated in the heat recovery zone, and the first electric heating pipe, the second electric heating pipe and the water pipe are all in a spiral structure; the inner furnace body is formed by combining a plurality of fan-shaped furnace bricks, the outer ends of the fan-shaped furnace bricks are protruded relative to the inner ends to form steps, the area above the steps is used as a material groove, and the material grooves of all the fan-shaped furnace bricks are sequentially connected to form a spiral track propulsion groove. The invention has reasonable structural design, adopts a high-temperature pushing mode of the spiral track in the furnace, and plays most of raw material performances to the greatest extent; the material in the furnace moves stably, and the moving speed is simple to operate; the service life of the kiln is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of electric heating kilns, in particular to an electric heating kiln body structure with a built-in spiral track propulsion groove.
Background
The existing continuous electric heating rotary kiln basically adopts an external heating structure, the rotary roller can be made of stainless steel alloy steel plates of different types according to the process temperature requirement, the outside of the rotary roller is heated by adopting heating elements such as resistance wires, silicon carbide rods and the like in a resistance way, heat is transferred into a hearth through the outer surface of the stainless steel rotary roller, and the stainless steel rotary roller is not only a heat transfer carrier, but also is required to transfer the rotation torque required by the rotation of the rotary kiln, so the high-temperature strength and the temperature resistance of the stainless steel material limit the use temperature of the existing electric heating rotary kiln, and the highest use temperature is only 200 ℃.
For this reason, the patent specification with publication number of CN104534864B discloses an electric heating continuous internal heating type high-temperature rotary kiln, a graphite heating pipe is arranged in a kiln chamber, a heat preservation felt is arranged outside the graphite heating pipe, the periphery of the heat preservation felt is wrapped by a metal weak magnetic integral sealing kiln body shell, two ends of the sealing kiln body shell are in dynamic and static sealing connection with an inlet cover and an outlet cover, the inlet cover is connected with a screw feeder, a mechanical transmission assembly is fixed on the kiln body shell, and the kiln body shell is supported by front and rear supporting rollers. The device is an ultrahigh-temperature internal heating type rotary kiln which aims at the problems that the use temperature of a continuous electric heating rotary kiln in the current market is low, an internal hearth or a product which is provided by adopting an external heating mode generates heat, and the kiln can be continuously used at 300-2000 ℃, and the limit of the use temperature of high-temperature stainless steel alloy to the highest temperature of the kiln is avoided in structural principle. But the electric heating continuous internal heating type high-temperature rotary kiln. However, the structural design of the furnace body of the high-temperature rotary kiln is not scientific and reasonable, the inner wall of the furnace body is smooth, the furnace body cannot be fully contacted with materials for heat transfer, and the heat energy utilization rate is low.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide an electric heating kiln body structure with a built-in spiral track propulsion groove.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
the electric heating kiln body structure with the spiral track propulsion groove comprises an outer layer kiln body, a middle layer kiln body and an inner layer kiln body, wherein the outer wall of the middle layer kiln body is coated with the outer layer kiln body, the inner wall is provided with the inner layer kiln body in a fitting mode, the middle layer kiln body is divided into a preheating zone, a heating zone and a heat recovery zone from front to back, a first electric heating pipe is arranged in the preheating zone in a penetrating mode, a second electric heating pipe is arranged in the heating zone in a penetrating mode, a water pipe is arranged in the heat recovery zone in a penetrating mode, the first electric heating pipe, the second electric heating pipe and the water pipe are of spiral structures, the screw pitch of the first electric heating pipe is larger than that of the second electric heating pipe, two ends of the first electric heating pipe and the second electric heating pipe are provided with leading-out rods penetrating through the outer layer kiln body, and two ends of the water pipe are respectively provided with a water inlet end and a water outlet end penetrating through the outer layer kiln body; the inner furnace body is formed by combining a plurality of fan-shaped furnace bricks, the outer ends of the fan-shaped furnace bricks are protruded relative to the inner ends to form steps, the area above the steps is used as a material groove, and the material grooves of all the fan-shaped furnace bricks are sequentially connected to form a spiral track propelling groove.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the outer layer kiln body is made of a weak magnetic metal plate and is welded in an integral sealing mode.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the middle layer kiln body is made of high-temperature-resistant hollow bricks, and the outer wall of the middle layer kiln body is coated with high-temperature-resistant heat-insulation paint.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the fan-shaped furnace bricks in the inner layer kiln body are made of common wear-resistant refractory brick materials through a mould pressing molding process.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the length of the preheating zone is 3m, the length of the heating zone is 10m, and the length of the heat recovery zone is 17m.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the inner layer kiln body is formed by combining 15 fan-shaped kiln bricks, and the central angle corresponding to each fan-shaped kiln brick is 24 degrees.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the distance between the inner end of the fan-shaped kiln brick and the circle center O point is 150mm, and the radius side length is 1425mm.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the thickness L1 of the upper part of the fan-shaped kiln brick is 50mm, the width of the step along the thickness direction of the fan-shaped kiln brick is 35mm, the total thickness of the fan-shaped kiln brick is 85mm, and the height of the fan-shaped kiln brick at the maximum thickness is 300mm.
Further, in the electric heating kiln body structure with the built-in spiral track propulsion groove, the right bottom edge of the arc bottom edge in the fan-shaped kiln bricks forwards 5.6mm relative to the vertical direction of the cross section, each fan-shaped kiln brick forwards 5.6mm, the material stably and longitudinally forwards 83mm in each rotation of the kiln, and the rolling movement speed is 100mm/s.
The beneficial effects of the invention are as follows:
the invention has reasonable structural design, adopts a high-temperature pushing mode of the spiral track in the furnace, and plays most of raw material performances to the greatest extent; the material in the furnace moves stably, and the moving speed is simple to operate; the service life of the kiln is greatly prolonged; the heating area has obvious isolation effect, greatly improves the heat energy utilization rate and has great significance for environmental protection. In addition, the existing common wear-resistant refractory brick material mould pressing molding process is adopted, so that the manufacturing is easy and the cost is controllable.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of a furnace body according to the present invention;
FIG. 2 is a schematic side view of an inner furnace body according to the present invention;
FIG. 3 is a schematic diagram of the front view of a fan-shaped furnace brick according to the present invention;
FIG. 4 is a schematic view of the structure of the fan-shaped furnace brick of the present invention after the cutting-out part;
in the drawings, the list of components represented by the various numbers is as follows:
the furnace comprises a furnace body of a 1-outer layer, a furnace body of a 2-middle layer, a preheating zone, a heating zone 202, a heat recovery zone 203, a first electric heating tube 204, a second electric heating tube 205, a water pipe 206, a furnace body of a 3-inner layer, a fan-shaped furnace brick 301, a step 302, a material groove 303 and a 4-spiral track propelling groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the embodiment is an electrothermal kiln body structure with a built-in spiral track propulsion groove, which comprises an outer layer kiln body 1, a middle layer kiln body 2 and an inner layer kiln body 3, wherein the outer wall of the middle layer kiln body 2 is coated with the outer layer kiln body 1, and the inner wall is provided with the inner layer kiln body 3 in a fitting manner. The outer layer furnace body 1 is made of a weak magnetic metal plate and is welded in an integral sealing way.
In the embodiment, the middle layer furnace body 2 is made of high temperature resistant hollow bricks, and the outer wall of the middle layer furnace body is coated with high temperature resistant heat insulation paint. The middle-layer furnace body 2 is divided into a preheating zone 201, a heating zone 202 and a heat recovery zone 203 from front to back, a first electric heating tube 204 is arranged in the preheating zone 201 in a penetrating way, a second electric heating tube 205 is arranged in the heating zone 202 in a penetrating way, and a water pipe 206 is arranged in the heat recovery zone 203 in a penetrating way. The preheating zone 201 has a length of 3m, the heating zone 202 has a length of 10m, and the heat recovery zone 203 has a length of 17m. The first electric heating tube 204, the second electric heating tube 205 and the water tube 206 are in spiral structures, the pitch of the first electric heating tube 204 is larger than that of the second electric heating tube 205, and the two ends of each of the first electric heating tube 204 and the second electric heating tube 205 are provided with a leading-out rod penetrating through the outer layer furnace body 1. The water pipe 206 has water inlet and water outlet penetrating the outer furnace 1, and the water pipe 206 is used for water cooling and water absorbing heat may be used for preheating.
In this embodiment, the inner furnace body 3 is formed by combining a plurality of fan-shaped furnace bricks 301, and the fan-shaped furnace bricks 301 are made of common wear-resistant refractory brick materials through a mould pressing molding process. The outer ends of the fan-shaped furnace bricks 301 are protruded relative to the inner ends to form steps 302, the area above the steps 302 is used as a material groove 303, and the material grooves 303 of all the fan-shaped furnace bricks 3 are sequentially connected to form a spiral track propulsion groove 4.
In this embodiment, the inner furnace body 3 is formed by combining 15 fan-shaped furnace bricks, and the central angle corresponding to each fan-shaped furnace brick 301 is 24 °. The distance between the inner end of the fan-shaped furnace brick and the circle center O point is 150mm, and the radius side length is 1425mm. The upper thickness L1 of the fan-shaped furnace brick is 50mm, the width of the step along the thickness direction of the fan-shaped furnace brick is 35mm, the total thickness of the fan-shaped furnace brick is 85mm, and the height of the fan-shaped furnace brick at the maximum thickness is 300mm. The right bottom edge of the arc bottom edge in the fan-shaped furnace bricks advances by 5.6mm relative to the vertical direction of the cross section, each fan-shaped furnace brick advances by 5.6mm, the material stably advances by 83mm longitudinally every time the furnace kiln rotates, and the rolling movement speed is 100mm/s.
One specific application of this embodiment is: the embodiment has reasonable structural design, adopts a high-temperature pushing mode of the spiral track in the furnace, and plays most of raw material performances to the greatest extent; the material in the furnace moves stably, and the moving speed is simple to operate; the service life of the kiln is greatly prolonged; the heating area has obvious isolation effect, greatly improves the heat energy utilization rate and has great significance for environmental protection. In addition, the existing common wear-resistant refractory brick material mould pressing molding process is adopted, so that the manufacturing is easy and the cost is controllable.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. The utility model provides an electric heat kiln furnace body structure in built-in spiral track propulsion groove, includes outer furnace body, middle level furnace body and inlayer furnace body, the outer cladding of middle level furnace body has outer furnace body, and the inner wall laminating is equipped with inlayer furnace body, its characterized in that: the middle-layer furnace body is divided into a preheating zone, a heating zone and a heat recovery zone from front to back, a first electric heating pipe is arranged in the preheating zone in a penetrating manner, a second electric heating pipe is arranged in the heating zone in a penetrating manner, a water pipe is arranged in the heat recovery zone in a penetrating manner, the first electric heating pipe, the second electric heating pipe and the water pipe are of spiral structures, the screw pitch of the first electric heating pipe is larger than that of the second electric heating pipe, the two ends of the first electric heating pipe and the two ends of the second electric heating pipe are respectively provided with an extraction rod penetrating through the outer-layer furnace body, and the two ends of the water pipe are respectively provided with a water inlet end and a water outlet end penetrating through the outer-layer furnace body; the inner furnace body is formed by combining a plurality of fan-shaped furnace bricks, the outer ends of the fan-shaped furnace bricks are protruded relative to the inner ends to form steps, the area above the steps is used as a material groove, and the material grooves of all the fan-shaped furnace bricks are sequentially connected to form a spiral track propulsion groove;
the outer layer furnace body is made of a weak magnetic metal plate and is welded in an integral sealing way;
the middle layer furnace body is made of high temperature resistant hollow bricks, and the outer wall of the middle layer furnace body is coated with high temperature resistant heat insulation paint;
the fan-shaped furnace bricks in the inner furnace body are made of common wear-resistant refractory brick materials through a mould pressing molding process.
2. The electrothermal kiln body structure with a built-in spiral track propulsion groove according to claim 1, wherein: the preheating zone has a length of 3m, the heating zone has a length of 10m, and the heat recovery zone has a length of 17m.
3. The electrothermal kiln body structure with a built-in spiral track propulsion groove according to claim 1, wherein: the inner layer furnace body is formed by combining 15 fan-shaped furnace bricks, and the central angle corresponding to each fan-shaped furnace brick is 24 degrees.
4. The electric heating kiln body structure with built-in spiral track propulsion groove as claimed in claim 3, wherein: the distance between the inner end of the fan-shaped furnace brick and the circle center O point is 150mm, and the radius side length is 1425mm.
5. The electric heating kiln body structure with built-in spiral track propulsion groove as claimed in claim 3, wherein: the upper thickness L1 of the fan-shaped furnace brick is 50mm, the width of the step along the thickness direction of the fan-shaped furnace brick is 35mm, the total thickness of the fan-shaped furnace brick is 85mm, and the height of the fan-shaped furnace brick at the maximum thickness is 300mm.
6. The electric heating kiln body structure with built-in spiral track propulsion groove as claimed in claim 3, wherein: the right bottom edge of the arc bottom edge in the fan-shaped furnace bricks advances by 5.6mm relative to the vertical direction of the cross section, each fan-shaped furnace brick advances by 5.6mm, the material stably advances by 83mm longitudinally every time the furnace kiln rotates, and the rolling movement speed is 100mm/s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910559398.5A CN112146432B (en) | 2019-06-26 | 2019-06-26 | Electric heating kiln body structure with built-in spiral track propulsion groove |
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| CN201910559398.5A CN112146432B (en) | 2019-06-26 | 2019-06-26 | Electric heating kiln body structure with built-in spiral track propulsion groove |
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| CN112146432A CN112146432A (en) | 2020-12-29 |
| CN112146432B true CN112146432B (en) | 2023-05-02 |
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| CN202254762U (en) * | 2011-08-25 | 2012-05-30 | 咸阳蓝光热工科技有限公司 | Full-atmosphere protection spiral groove type convolution furnace |
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| CN206362167U (en) * | 2016-12-27 | 2017-07-28 | 铁岭贵鑫环保科技发展有限公司 | A kind of rotary kiln |
| CN208567497U (en) * | 2018-06-11 | 2019-03-01 | 福建金山锂科新材料有限公司 | A kind of nickelic ternary material sintering rotary furnace |
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2019
- 2019-06-26 CN CN201910559398.5A patent/CN112146432B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2153588A5 (en) * | 1971-09-16 | 1973-05-04 | Smidth & Co As F L | Rotary cement kiln - with helical lifting channels for preheat zone |
| US4639217A (en) * | 1985-01-14 | 1987-01-27 | Adams D Carlos | Countercurrent heat transfer device for solid particle streams |
| JP2008215673A (en) * | 2007-03-01 | 2008-09-18 | Toray Ind Inc | Screw conveyor type treatment device and heat treatment method for granular material using the same |
| CN201053814Y (en) * | 2007-06-22 | 2008-04-30 | 咸阳陶瓷研究设计院 | Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter |
| CN201666725U (en) * | 2010-02-03 | 2010-12-08 | 吉林省建筑材料工业设计研究院 | Internal helical tube type rotary kiln |
| CN202254762U (en) * | 2011-08-25 | 2012-05-30 | 咸阳蓝光热工科技有限公司 | Full-atmosphere protection spiral groove type convolution furnace |
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