CN214665951U

CN214665951U - Electric heating type rotary furnace capable of directly and efficiently utilizing heat energy

Info

Publication number: CN214665951U
Application number: CN202120710546.1U
Authority: CN
Inventors: 冯振辉; 冯骏祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-11-09
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses an electric heating type rotary furnace which directly and efficiently utilizes heat energy. The device comprises a machine seat, a No. 1 spiral propelling shell, a No. 2 spiral propelling shell, a spiral propelling rod, a feeding hopper, a plurality of sections, a subsection rotating conducting ring, a carbon brush supporting frame, a shell, a regular-polygon wear-resistant and corrosion-resistant corundum hearth, a hearth heat storage layer, a heat insulation layer, a vacuum heat insulation layer, an electric heating component, a large gear, a wheel belt, a riding wheel seat, a motor, a speed reducer, a heat insulation layer, a fan, an air inlet adjusting valve, cold air preheating pipe discharge pipes, an inlet heat storage layer, an inlet heat insulation layer and a heat insulation layer shell. The utility model has low and adjustable flow velocity of the smoke in the furnace, which can ensure the low-grade steam to be heated into superheated steam, and can improve the retention time of the smoke in the furnace, thereby facilitating the heat absorption of the heat accumulator; the heat storage area is large, and the heat energy is ensured to be fully absorbed; the heat insulation layer is provided with a heat insulation layer, a vacuum heat insulation layer and a conventional heat insulation layer; the sintering material preheats air, thereby not only reducing the temperature of the material, but also recovering heat.

Description

Electric heating type rotary furnace capable of directly and efficiently utilizing heat energy

Technical Field

The utility model relates to a calcination equipment technical field specifically is a direct high-efficient electric heat formula rotary furnace who utilizes heat energy.

Background

The existing rotary furnace has the defect of high energy consumption. The high energy consumption has three main problems: firstly, the heat source is coal, fuel oil and fuel gas, and a large amount of air is needed to ensure the sufficient combustion of the fuel, so that the flow velocity of flue gas in the furnace is very fast, the heat released by the pyrolysis of water vapor and materials in the furnace is quickly carried away from the furnace body, and even if heat accumulators of various types are arranged in the furnace, the effect is poor due to low heat grade and insufficient heat absorption time; the flue gas flowing out of the furnace body is generally subjected to preheating material treatment, so that a large amount of heat is wasted; secondly, the sintering material flowing out of the furnace body is generally subjected to cold treatment, and the waste heat is not effectively utilized; thirdly, the heat preservation effect is not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electrothermal rotary furnace which directly and efficiently utilizes heat energy, aiming at the technical defects of the prior art.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a direct high-efficient electric heat formula rotary furnace who utilizes heat energy, a serial communication port, including the machine seat, No. 1 spiral impels the shell, No. 2 spiral impels the shell, the spiral propulsion pole, the feeder hopper, the multistage, the rotatory conducting ring of subregion, the carbon brush support frame, the shell, regular polygon wear-resisting anticorrosive corundum furnace chamber, furnace heat accumulation layer, insulating layer, vacuum heat preservation, electrical heating components and parts, gear wheel, wheel area, riding wheel seat, motor, speed reducer, heat preservation, close fan, air intake governing valve, cold wind preheats calandria, import heat accumulation layer, import heat preservation and heat preservation shell, the machine seat is last to be put two riding wheel seats, regular polygon wear-resisting anticorrosive corundum furnace chamber sets up in two riding wheel seats, be provided with a plurality of electrical heating components and parts on the periphery in the regular polygon wear-resisting anticorrosive corundum furnace chamber outside the electrical heating components and parts set gradually furnace heat accumulation layer, The heat insulation layer, the vacuum heat insulation layer and the heat insulation cotton layer are arranged on the outermost side, the large gear is arranged on the heat insulation cotton layer, the motor is arranged on the machine seat, the speed reducer is arranged on the machine seat, an input shaft of the speed reducer is connected with a rotating shaft of the motor, and a transmission gear is arranged on an output shaft of the speed reducer and meshed with the large gear; two wheel belts corresponding to the riding wheel seats are arranged on the heat insulation cotton layer on the outermost side; the inlet end of the regular polygonal wear-resistant anticorrosive corundum furnace hearth is provided with a heat insulation layer shell, a heat insulation layer and a heat storage layer are sequentially arranged in the heat insulation layer shell, the cold air preheating discharge pipe is embedded in the heat storage layer, the lower end of the cold air preheating discharge pipe extends out of the heat insulation layer shell, an air inlet adjusting valve is arranged at the lower end of the cold air preheating discharge pipe, a fan shut-off machine communicated with the interior of the heat insulation layer shell is arranged at the bottom of the heat insulation layer shell, and the high end of the cold air preheating discharge pipe is communicated with the inlet of the regular polygonal wear-resistant anticorrosive corundum furnace hearth; the exhaust end of the regular polygonal wear-resistant anticorrosive corundum hearth is connected with a No. 1 spiral propelling shell, the outer diameter of the No. 2 spiral propelling shell is smaller than the inner diameter of the No. 1 spiral propelling shell, one end of the No. 2 spiral propelling shell is arranged in one end of the No. 1 spiral propelling shell, and the No. 2 spiral propelling shell is connected with a machine seat through a support; in No. 2 propulsion shells are arranged in to screw propulsion pole one end, screw propulsion pole's the other end passes No. 1 screw propulsion shell and arranges regular polygon wear-resisting anticorrosive corundum furnace in, screw propulsion pole all has set helical blade on the part that screw propulsion shell and No. 2 screw propulsion shells are located, No. 1 screw propulsion shell is provided with the protection casing outward, be provided with multistage, the rotatory conducting ring of subregion on the lateral surface of No. 1 screw propulsion shell, and be located the shell, the inboard of shell is provided with the corresponding carbon brush support frame of multistage, the rotatory conducting ring of subregion, be provided with feeder hopper and blast pipe on No. 2 screw propulsion shells, be provided with the gas vent governing valve on the blast pipe.

Preferably, the hearth heat storage layer and the inlet heat storage layer are both made of refractory materials and hollow heat storage balls through mixed pouring;

preferably, the heat insulation layer is formed by pouring expanded vermiculite with high temperature resistance and high heat insulation coefficient or by mixing expanded vermiculite with a heat insulation material;

preferably, the No. 1 spiral propelling shell and the No. 2 spiral propelling shell are seamlessly inserted and then are mutually embedded and butted with the multi-section and subsection rotary conducting rings.

The utility model has the advantages that 1, the flow velocity of the smoke in the furnace is low and adjustable, which can ensure that the low-grade steam is heated into superheated steam, improve the retention time of the smoke in the furnace and facilitate the heat absorption of the heat accumulator; 2. the heat storage area is large, and the heat energy is ensured to be fully absorbed; 3. the heat insulation layer is provided with a heat insulation layer, a vacuum heat insulation layer and a conventional heat insulation layer; 4. the sintering material preheats air, thereby not only reducing the temperature of the material, but also recovering heat.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a sectional view of an electrothermal rotary furnace of the present invention for directly and efficiently utilizing heat energy.

Description of reference numerals:

the machine seat comprises a machine seat 1, a No. 1 spiral propelling shell 2, a No. 2 spiral propelling shell 3, a spiral propelling rod 4, a feeding hopper 6, multiple sections, a subsection rotating conducting ring 8, a carbon brush supporting frame 9, a shell 10, a regular polygon wear-resistant and corrosion-resistant corundum hearth 11, a hearth heat storage layer 12, a heat insulation layer 13, a vacuum heat insulation layer 14, an electric heating component 15, a large gear 16, a wheel belt 17, a riding wheel seat 18, a motor 19, a speed reducer 20, a heat insulation layer 21, a fan 22, an air inlet adjusting valve 23, a cold air preheating exhaust pipe 24, an inlet heat storage layer 25, an inlet heat insulation layer 26 and a heat insulation layer shell 27.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, an electrothermal rotary furnace for directly and efficiently utilizing heat energy comprises a machine seat 1, a spiral propulsion shell 2, a spiral propulsion shell 3, a spiral propulsion rod 4, a feed hopper 6, a plurality of sections, a section-divided rotary conductive ring 8, a carbon brush support frame 9, a shell 10, a regular polygon wear-resistant and corrosion-resistant corundum furnace hearth 11, a hearth heat storage layer 12, a heat insulation layer 13, a vacuum heat insulation layer 14, an electric heating element 15, a gear wheel 16, a wheel belt 17, a riding wheel seat 18, a motor 19, a speed reducer 20, a heat insulation layer 21, a fan 22, an air inlet adjusting valve 23, a cold air preheating pipe 24, an inlet heat storage layer 25, an inlet heat insulation layer 26 and a heat insulation layer shell 27, wherein two riding wheel seats 18 are arranged on the machine seat 1, the regular polygon wear-resistant and corrosion-resistant corundum furnace hearth 11 is arranged on the two riding wheel seats 18, a plurality of electric heating elements 15 are arranged on the outer circumferential surface of the regular polygon wear-resistant and corrosion-resistant corundum furnace hearth 11, the furnace heat storage layer 12, the heat insulation layer 13, the vacuum heat insulation layer 14 and the heat insulation cotton layer are sequentially arranged outside the electric heating components 15, a large gear 16 is arranged on the heat insulation cotton layer on the outermost side, the motor 19 is arranged on the machine seat 1, the speed reducer 20 is arranged on the machine seat 1, an input shaft of the speed reducer 20 is connected with a rotating shaft of the motor 19, and a transmission gear is arranged on an output shaft of the speed reducer 20 and meshed with the large gear 16; two wheel belts 17 corresponding to the riding wheel seats 18 are arranged on the heat insulation cotton layer on the outermost side; the inlet end of the regular polygonal wear-resistant anticorrosive corundum furnace 11 is provided with an insulating layer shell 27, an insulating layer 21 and a heat storage layer are sequentially arranged in the insulating layer shell 27, the cold air preheating discharge pipe 24 is embedded in the heat storage layer, the lower end of the cold air preheating discharge pipe 24 extends out of the insulating layer shell 27, an air inlet adjusting valve 23 is arranged at the lower end of the cold air preheating discharge pipe, a fan 22 communicated with the inside of the insulating layer shell 27 is arranged at the bottom of the insulating layer shell 27, and the high end of the cold air preheating discharge pipe 24 is communicated with the inlet of the regular polygonal wear-resistant anticorrosive corundum furnace 11; the exhaust end of the regular polygonal wear-resistant anticorrosive corundum furnace 11 is connected with a No. 1 spiral propelling shell 2, the outer diameter of the No. 2 spiral propelling shell 3 is smaller than the inner diameter of the No. 1 spiral propelling shell 2, one end of the No. 2 spiral propelling shell 3 is arranged in one end of the No. 1 spiral propelling shell 2, and the No. 2 spiral propelling shell 3 is connected with a machine seat 1 through a support; in 2 propulsion shells 10 are arranged in to 4 one ends of screw propulsion pole, screw propulsion pole 4's the other end passes 1 screw propulsion shell 2 and arranges regular polygon wear-resisting anticorrosive corundum furnace 11 in, screw propulsion pole 4 all has helical blade on the part that is located 1

screw propulsion shell

2 and 2 screw propulsion shells 3, 1 number screw propulsion shell 2 is provided with the protection casing outward, be provided with multistage, the rotatory conducting ring of subregion 8 on 1 number screw propulsion shell 2's the lateral surface, and be located shell 10, shell 10's inboard is provided with the corresponding carbon brush support frame 9 of multistage, the rotatory conducting ring of subregion 8, be provided with feeder hopper 6 and blast pipe on 2 number screw propulsion shell 3, be provided with the gas vent governing valve on the blast pipe.

Further, the hearth heat storage layer 12 and the inlet heat storage layer 25 are formed by mixing and pouring refractory materials and hollow heat storage balls;

further, the heat insulation layer 13 is formed by mixing and pouring expanded vermiculite or expanded vermiculite and heat insulation materials which are high in heat resistance and heat insulation coefficient;

furthermore, the No. 1 spiral propelling shell 2 and the No. 2 spiral propelling shell 3 are seamlessly inserted and connected with the multi-section and subsection rotating conducting rings 8 in an embedded and butt joint mode.

When the corundum fire-fighting furnace is used, the motor 19 is powered on to work, the rotating shaft of the motor 19 rotates, power is transmitted to the large gear 16 through the transmission gear after being decelerated by the speed reducer 20, the large gear 16 drives the regular polygonal wear-resistant and corrosion-resistant corundum furnace hearth 11 to rotate, the No. 1 spiral propelling shell 2 and the spiral propelling rod 4 rotate along with the regular polygonal wear-resistant and corrosion-resistant corundum furnace hearth 11, and the multi-section and subsection rotating conducting rings 8 on the No. 1 spiral propelling shell 2 rotate;

the electric heating element 15 is electrified to work for heating, and the hearth heat storage layer 12, the heat insulation layer 13, the vacuum heat insulation layer 14 and the heat insulation cotton layer which are arranged outside the electric heating element 15 prevent heat loss; the vacuum heat-insulating layer 14 reduces convection and contact heat transfer, and reduces heat loss; the outside of the vacuum insulation layer 14 is a conventional insulation layer 21,

the fan 22 is turned off, external air enters the regular polygonal wear-resistant anticorrosive corundum furnace 11 after being preheated by the cold air preheating exhaust pipe 24, and an inlet heat storage layer 25 and an inlet heat insulation layer 26 which are arranged outside the cold air preheating exhaust pipe 24 prevent heat loss; the air inlet quantity can be adjusted through the air inlet adjusting valve 23; air entering the regular polygonal wear-resistant anticorrosive corundum hearth 11 is heated and then discharged through the No. 1 spiral propelling shell 2, the No. 2 spiral propelling shell 3 and the exhaust pipe, and the amount of discharged regulating gas can be adjusted through the exhaust port;

the materials are put into the feeding hopper 6 and enter the spiral propelling shell 10, the spiral propelling rod 4 rotates to propel the materials into the spiral propelling shell 2 of No. 1 and then is spirally propelled to the regular polygonal wear-resistant and corrosion-resistant corundum furnace hearth 11, the materials absorb the waste heat of tail gas in the

spiral propelling shells

2 and 3 of No. 1 and 2 in the spiral propelling process, the heat of the tail gas is fully utilized, the radial resistance of the materials in the furnace can be increased due to the regular polygonal structure of the regular polygonal wear-resistant and corrosion-resistant corundum furnace hearth 11, the materials are enabled to stay at the bottom of the furnace hearth continuously, the heat absorption efficiency of the materials is improved, and the capacity is improved; the water vapor in the flue gas is rapidly heated into superheated steam by the high temperature in the furnace, so that the heat level is improved, and the absorption by the heat storage material is facilitated.

The temperature of the rotary furnace is 30-40 ℃ when the tail gas is discharged; the temperature of the sintering material discharged from the cooling bin is less than 60 ℃; the surface temperature of the shell 10 of the rotary furnace is reduced from 300-350 ℃ to 50-60 ℃; the energy-saving effect is very obvious, and the system only needs to supplement heat losses such as tail gas, sintering materials, furnace body surface heat dissipation and the like after being preheated to the working temperature.

The multi-section and subsection-dividing rotary conducting ring 8 is provided with a plurality of subsections, a plurality of regions, and an independent region or subsection can independently rotate the conducting ring and adjust the change of the temperature in the subarea, the subareas are increased and decreased according to the requirement of the working temperature, the energy consumption is controlled, and the rotary conducting ring adopts a polygonal form of a plurality of groups of conducting rings, rotates around the material in the furnace, increases the heating surface of the material and accelerates the absorption of heat energy. The specific adjustment is as follows: the rotating conducting ring 8 is provided with a plurality of regions such as A, B, C, D, E, the region A can be set to heat according to the working temperature, materials are pushed from the region A to the region E, the temperature gradually rises to the highest heating temperature of the region E, otherwise, the temperature gradually falls, the heating energy consumption of the latter half region is saved, or the synchronous temperature of the rotating conducting rings in the five regions A, B, C, D, E can be adjusted at will, so that the heating condition of each region is gradually adjusted in the pushing process of the materials, and the targeted adjustment can be performed according to the actual needs on the basis, so that different implementation modes and energy-saving effects are obtained;

the utility model adopts the electric heating mode, and does not need a large amount of air, so that the flow velocity of the flue gas can be adjusted according to the material condition in the furnace, the retention time of the flue gas is greatly increased, and the heat energy can be fully absorbed by the heat storage material;

tail gas at the tail end of the furnace is preheated for spiral feeding, and the waste heat of the tail gas is fully utilized;

the inner wall of the hearth is changed from a traditional round shape to a regular polygon shape, so that the radial resistance of the materials in the furnace is increased, the materials are continuously stopped at the bottom of the hearth, the heat absorption efficiency of the materials is improved, and the productivity is improved; the water vapor in the flue gas is rapidly heated into superheated steam by the high temperature in the furnace, so that the heat level is improved, and the superheated steam is conveniently absorbed by a heat storage material;

the rotary furnace barrel is integrally cast by adopting a plurality of layers, and comprises a hearth, a heat storage layer, a heat insulation layer 13, a vacuum heat insulation layer 14 and a heat insulation cotton layer from inside to outside in sequence. The hearth is made of wear-resistant, high-temperature-resistant and corrosion-resistant corundum. The heat storage layer is made of refractory material with high heat absorption coefficient and is mixed with the hollow heat storage ball for pouring, and the middle part is provided with a heating element; the heat storage layer has large area, and the heat energy absorption efficiency is improved; the heat insulation layer 13 is preferably expanded vermiculite with high temperature resistance and high heat insulation coefficient or is mixed with heat insulation materials for pouring;

the vacuum heat-insulating layer 14 is arranged outside the cylinder body, so that convection and contact heat transfer are reduced, and heat loss is reduced; a conventional insulating layer 21 is arranged outside the vacuum insulating layer 14;

the heat storage layer is formed by pouring refractory materials and hollow heat storage balls in a mixed mode, a cold air preheating exhaust pipe 24 is arranged in the heat storage layer, and cold air enters a hearth after exchanging heat with sintering materials through the exhaust pipe, so that the heat taken away by the sintering materials is reduced.

As right the utility model discloses a further explanation, rotary furnace feeding system's No. 1 screw propulsion shell 2 and No. 2 screw propulsion shell 3 adopt seamless grafting, and the butt joint of imbedding each other with multistage, the rotatory conducting ring 8 of subregion again guarantees good gas tightness, and feeding system can adjust the change of subregion internal temperature and feeding by oneself, has improved heat energy utilization efficiency greatly, reduces thermal loss.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a direct high-efficient electric heat formula rotary furnace who utilizes heat energy, a serial communication port, including the machine seat, No. 1 spiral impels the shell, No. 2 spiral impels the shell, the spiral propulsion pole, the feeder hopper, the multistage, the rotatory conducting ring of subregion, the carbon brush support frame, the shell, regular polygon wear-resisting anticorrosive corundum furnace chamber, furnace heat accumulation layer, insulating layer, vacuum heat preservation, electrical heating components and parts, gear wheel, wheel area, riding wheel seat, motor, speed reducer, heat preservation, close fan, air intake governing valve, cold wind preheats calandria, import heat accumulation layer, import heat preservation and heat preservation shell, the machine seat is last to be put two riding wheel seats, regular polygon wear-resisting anticorrosive corundum furnace chamber sets up in two riding wheel seats, be provided with a plurality of electrical heating components and parts on the periphery in the regular polygon wear-resisting anticorrosive corundum furnace chamber outside the electrical heating components and parts set gradually furnace heat accumulation layer, The heat insulation layer, the vacuum heat insulation layer and the heat insulation cotton layer are arranged on the outermost side, the large gear is arranged on the heat insulation cotton layer, the motor is arranged on the machine seat, the speed reducer is arranged on the machine seat, an input shaft of the speed reducer is connected with a rotating shaft of the motor, and a transmission gear is arranged on an output shaft of the speed reducer and meshed with the large gear; two wheel belts corresponding to the riding wheel seats are arranged on the heat insulation cotton layer on the outermost side; the inlet end of the regular polygonal wear-resistant anticorrosive corundum furnace hearth is provided with a heat insulation layer shell, a heat insulation layer and a heat storage layer are sequentially arranged in the heat insulation layer shell, the cold air preheating discharge pipe is embedded in the heat storage layer, the lower end of the cold air preheating discharge pipe extends out of the heat insulation layer shell, an air inlet adjusting valve is arranged at the lower end of the cold air preheating discharge pipe, a fan shut-off machine communicated with the interior of the heat insulation layer shell is arranged at the bottom of the heat insulation layer shell, and the high end of the cold air preheating discharge pipe is communicated with the inlet of the regular polygonal wear-resistant anticorrosive corundum furnace hearth; the exhaust end of the regular polygonal wear-resistant anticorrosive corundum hearth is connected with a No. 1 spiral propelling shell, the outer diameter of the No. 2 spiral propelling shell is smaller than the inner diameter of the No. 1 spiral propelling shell, one end of the No. 2 spiral propelling shell is arranged in one end of the No. 1 spiral propelling shell, and the No. 2 spiral propelling shell is connected with a machine seat through a support; in No. 2 propulsion shells are arranged in to screw propulsion pole one end, screw propulsion pole's the other end passes No. 1 screw propulsion shell and arranges regular polygon wear-resisting anticorrosive corundum furnace in, screw propulsion pole all has set helical blade on the part that screw propulsion shell and No. 2 screw propulsion shells are located, No. 1 screw propulsion shell is provided with the protection casing outward, be provided with multistage, the rotatory conducting ring of subregion on the lateral surface of No. 1 screw propulsion shell, and be located the shell, the inboard of shell is provided with the corresponding carbon brush support frame of multistage, the rotatory conducting ring of subregion, be provided with feeder hopper and blast pipe on No. 2 screw propulsion shells, be provided with the gas vent governing valve on the blast pipe.

2. An electrothermal rotary furnace for direct and efficient use of heat energy according to claim 1 wherein the screw propulsion hull No. 1 and the screw propulsion hull No. 2 are inserted seamlessly and then butt-jointed with the multi-segment and segmented rotary conducting rings by embedding.

3. An electrothermal rotary furnace for high efficiency direct utilization of heat energy according to claim 1 wherein the thermal insulation layer is expanded vermiculite with high temperature resistance and high thermal insulation coefficient.