Roller bed type heating furnace

Abstract

The utility model discloses a roller way type heating furnace which comprises a furnace body, a furnace door and a feeding frame, an air cooling structure is arranged at the top of a heating cavity, the feeding frame comprises a movable steel frame arranged in the length direction of the heating cavity, and a plurality of roller bars arranged at intervals are arranged on the two sides of the steel frame in the length direction. The air cooling structure is arranged, so that the heat exchange speed of the surface of a material is increased, cold air is continuously blown through the surface of the material, continuous cooling of the material is achieved by arranging the movable feeding frame when the material is discharged, and compared with natural cooling in the prior art, the cooling efficiency is higher, and the service life of the material is prolonged. And when the materials are heated, the air cooling structure can also enable hot air in the furnace to circularly flow in the furnace, so that heat is uniformly transferred to all positions in the furnace, the transfer efficiency of the heat is enhanced, oxide skin generated when the materials are heated is reduced, and pollution to the environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating furnace technical field especially relates to roller way type heating furnace. BACKGROUND

[0002] With the continuous development of industrial production, especially the metallurgy, machinery manufacturing and other industries, the demand for efficient, continuous heating equipment is increasing. In large-scale production, the traditional intermittent heating furnace is difficult to meet the requirements of production efficiency and quality.

[0003] The existing equipment will appear insufficient cooling when heating the steel, the internal organization of the steel can not be completely converted into the required structure, so that the hardness is insufficient, the local hardness insufficient area will appear wear and deformation, and the oxide skin will be generated when the steel is heated, the residual oxide skin will make the steel surface rough and uneven, affect the measured size, and the oxide skin will pollute the environment, therefore, we provide the roller way type heating furnace.

[0004] Therefore, the utility model is provided to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing roller way type heating furnace to solve the technical problem of insufficient cooling of the existing heating furnace for the heated steel.

[0006] The technical scheme of the utility model is: roller way type heating furnace, including:

[0007] Furnace body, the furnace body is rectangular structure, the furnace body width direction one side is equipped with the feed inlet, the furnace body inside forms the heating cavity, the heating cavity inner wall is provided with the furnace lining, the furnace lining bottom is provided with the heating assembly, the heating cavity top is provided with the air cooling structure;

[0008] Furnce door, the furnace door can be slidably arranged on the furnace body, and a lifting mechanism is arranged on the furnace body, and the lifting mechanism is used to control the furnace door to open or close the feed inlet;

[0009] Feeding frame, the feeding frame includes movable steel frame arranged along the length direction of the heating cavity, a plurality of roller bars are arranged on the both sides of the length direction of the steel frame, the both ends of the plurality of roller bars are rotatably arranged on the inner wall of the heating cavity, the same end of the roller bar extends out of the heating cavity, and two sprockets are sleeved on the extending end of the roller bar, so that two groups of sprocket sets are formed between adjacent roller bars, and a chain engaged with each other is sleeved on each sprocket set, wherein any one group of sprocket sets is driven by a speed reducer.

[0010] Further, the heating assembly includes a high-temperature resistant resistance band, which is installed on the furnace lining through high-temperature porcelain nails.

[0011] Further, the furnace lining is a high-temperature resistant fiber module, which is installed on the inner wall of the furnace body through riveting pieces.

[0012] Further, the furnace lining surface is sprayed with a high-temperature curing agent to form a heat insulation wall.

[0013] Further, the air cooling structure comprises a circulating assembly and a hot air deflector;

[0014] The hot air deflector is arranged on the furnace lining;

[0015] The circulating assembly comprises a circulating fan arranged on the furnace body;

[0016] An output end of the circulating fan is connected with a stirring shaft, and a lower end of the stirring shaft penetrates the furnace lining;

[0017] A circulating fan blade is sleeved on the lower end of the stirring shaft.

[0018] Further, the lifting mechanism comprises an electric speed reducer arranged on the furnace body;

[0019] An output end of the electric speed reducer is connected with a lifting shaft, and the lifting shaft is vertically arranged;

[0020] An upper end of the lifting shaft is fixedly connected with the furnace door through a connecting rod.

[0021] Further, the temperature controller and the thermocouple are arranged on the furnace body, and the temperature controller is electrically connected with the thermocouple.

[0022] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0023] By arranging the air cooling structure, the flow of air is accelerated, the heat exchange speed of the material surface is accelerated, cold air continuously blows through the material surface, and the movable feeding rack is arranged to continuously cool the material during discharging, so that heat is taken away, and the continuous cooling of the material is realized.

[0024] When the material is heated, the air cooling structure can also circulate the hot air in the furnace, so that the heat is uniformly transmitted to each position in the furnace, the heat transmission efficiency is enhanced, the scale generated during heating of the material is reduced, and the pollution to the environment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof serve to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0026] Figure 1 A structural schematic diagram of a roller-type heating furnace provided by the embodiment of the present application is shown in the figure.

[0027] Figure 2 A structural schematic diagram of another view of the roller-type heating furnace provided by the embodiment of the present application is shown in the figure. Figure 1 A structural schematic diagram of another view of the roller-type heating furnace provided by the embodiment of the present application is shown in the figure.

[0028] Reference signs: 1, furnace body; 2, furnace lining; 3, furnace door; 4, hot air flow guide cover; 5, circulating fan; 6, stirring shaft; 7, circulating fan blade; 8, heating assembly; 9, roller bar; 10, bearing seat; 11, chain wheel.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application are described in further detail in combination with the drawings.

[0031] Referring to Figures 1 to 2 The embodiment of the present application provides a roller-type heating furnace, which comprises a furnace body 1, a furnace door 3 and a feeding rack. The furnace body 1 is of a rectangular structure, and a feeding port is formed on one side of the furnace body 1 in the width direction. A heating cavity is formed inside the furnace body 1, and a furnace lining 2 is arranged on the inner wall of the heating cavity. A heating assembly 8 is arranged at the bottom of the furnace lining 2. An air cooling structure is arranged at the top of the heating cavity. The furnace door 3 is slidably arranged on the furnace body 1. A lifting mechanism is arranged on the furnace body 1, and the lifting mechanism is used to control the opening or closing of the feeding port of the furnace door 3. The feeding rack comprises a movable steel frame arranged along the length direction of the heating cavity. A plurality of roller bars 9 are arranged at both sides of the steel frame in the length direction at intervals. The roller bars 9 are movably installed on both sides of the steel frame through bearing seats 10. The two ends of the plurality of roller bars 9 are rotatably arranged on the inner wall of the heating cavity. The same end of the roller bars 9 extends out of the heating cavity, and two chain wheels 11 are arranged on the extending end of each roller bar 9, so as to form two groups of chain wheel sets between adjacent roller bars 9. A chain meshing with each group of chain wheel sets is arranged on each group of chain wheel sets. Any one group of chain wheel sets is driven by a speed reducer motor, and the speed reducer motor is electrically connected with an external power supply.

[0032] It should be noted that the furnace body 1 is welded by section steel or steel plate, and is solid, firm, durable and reliable as a whole; the furnace lining 2 is a full-fiber structure, is a high-temperature-resistant fiber module, is fixed on the inner wall of the furnace body 1 by using standard anchoring pieces, has low thermal conductivity, low heat capacity, chemical stability, thermal stability, heat shock resistance, good tensile strength and corrosion resistance; the limiting switches are arranged at the upper and lower ends of the furnace door 3, the sealing of the furnace door 3 is sealed by using a rubber sealing ring, and the furnace door 3 is sealed without gap and heat leakage in the closed state; the roller bar 9 is made of stainless steel pipe, two positioning sleeve rings are sleeved on each roller bar 9, the two positioning sleeve rings are used for limiting the material basket, preventing the material basket from deviating, and ensuring that the material basket on the roller bar 9 can move in order.

[0033] Steel frame can be provided with guide wheels, and guide rails matched with the guide wheels are arranged on both sides of the bottom of the heating cavity. The guide wheels can move in the guide rails. The guide wheels are driven by walking motors, facilitating the movement of the steel frame, thereby facilitating feeding and discharging. The walking speed of the steel frame is 0.5 m / min. The speed can be adjusted by the walking motor. The walking motor is electrically connected with the external power supply.

[0034] In the above scheme, the air cooling structure is arranged to accelerate the flow of air, so that the heat exchange speed of the material surface is accelerated, the cold air continuously blows over the material surface, and the movable feeding frame is arranged to continuously cool the material during discharging, so as to take away the heat, thereby realizing the continuous cooling of the material. Compared with the natural cooling of the prior art, the cooling efficiency is higher, and the hardness of the material caused by insufficient cooling of the material is avoided. When the material is heated, the air cooling structure can also circulate the hot air in the furnace, so that the heat is uniformly transmitted to each position in the furnace, the heat transfer efficiency is enhanced, the scale generated during heating of the material is reduced, and the pollution to the environment is reduced.

[0035] In some possible embodiments, the heating assembly 8 includes a high-temperature-resistant resistance band, which is processed into an M shape and installed on the furnace lining 2 by high-temperature porcelain nails. This installation method is convenient to maintain and has low failure rate.

[0036] In some possible embodiments, the furnace lining 2 is a high-temperature-resistant fiber module, which is installed on the inner wall of the furnace body 1 by riveting pieces.

[0037] In some possible embodiments, the surface of the furnace lining 2 is sprayed with a high-temperature curing agent to form a heat insulation wall, increase the strength and heat radiation performance of the lining surface of the furnace lining 2, and further reduce the heat storage loss of the furnace lining 2, so as to achieve the effect of rapid heating and maximize the thermal efficiency of the furnace body 1.

[0038] In some possible embodiments, referring to Figure 1 and Figure 2As shown, the air cooling structure includes a circulating assembly and a hot air guide cover 4, the hot air guide cover 4 is arranged on the furnace lining 2, the circulating assembly includes a circulating fan 5 arranged on the furnace body 1, the circulating fan 5 is electrically connected with an external power supply, the output end of the circulating fan 5 is connected with a stirring shaft 6, the lower end of the stirring shaft 6 penetrates out of the furnace lining 2, the lower end of the stirring shaft 6 is sleeved with a circulating fan blade 7, the hot air guide cover 4 can guide the generated hot air in a specific direction, ensure that the hot air blows to the material accurately, make the hot air uniformly distributed on the surface of the material, improve the heating efficiency, the hot air guide cover 4 can also effectively reduce the vortex generated in the flow process of the hot air, make the hot air flow smoothly to the target area, improve the utilization efficiency of the hot air.

[0039] In the above scheme, when the material is cooled or heated, the circulating fan 5 is controlled to start, the circulating fan 5 drives the stirring shaft 6 to rotate through the output end, the stirring shaft 6 drives the circulating fan blade 7 to rotate, when the material is cooled, the flow of air can be accelerated, the heat exchange speed on the surface of the material is accelerated; when the material is heated, the hot air in the heating cavity is circulated in the furnace, so that the heat can be uniformly transmitted to each position in the furnace, and the heat transfer efficiency is enhanced.

[0040] In some possible embodiments, the lifting mechanism includes an electric speed reducer arranged on the furnace body 1, the electric speed reducer is electrically connected with an external power supply, the output end of the electric speed reducer is connected with a lifting shaft, the lifting shaft is vertically arranged, and the upper end of the lifting shaft is fixedly connected with the furnace door 3 through a connecting rod.

[0041] In the above scheme, when the furnace door 3 needs to be opened or closed, the electric speed reducer is controlled to start, the electric speed reducer drives the lifting shaft to vertically slide through the output end, the lifting shaft drives the furnace door 3 to slide through the connecting rod, so that the furnace door 3 is opened or closed.

[0042] The track type heating furnace provided by the embodiment of the present application further includes a temperature controller and a thermocouple arranged on the furnace body 1, the temperature controller is electrically connected with the thermocouple, the thermocouple can more reasonably and effectively control the uniformity of the material temperature, and the temperature control unit adopts an intelligent temperature control instrument with a PID self-tuning function.

[0043] It should be noted that the temperature controller can set the temperature in the furnace, the thermocouple inserted into the heating cavity converts the measured temperature in the furnace into a standard current signal through an electrical signal and sends the standard current signal to the temperature controller, and the temperature in the furnace is compared with the set temperature and subjected to PID adjustment operation, the loop control of the temperature controller adopts a Meihui TAC type three-phase intelligent power regulator, has the functions of three-phase voltage real-time display, phase-shifting voltage regulation, CYC power regulation integration, phase-locked loop synchronization, wide pulse triggering, external display panel and universal control input signal, and is further provided with short-circuit protection and overheat and overcurrent protection functions.

[0044] The speed reduction motor, the walking motor, the circulating fan and the electric speed reducer are provided with corresponding protection measures such as overload, short circuit, open phase, etc.

[0045] The embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification of the embodiment without creative contribution according to the need after reading the specification, but as long as the modification is within the protection scope of the utility model, the modification is protected by the patent law.

Claims

1. Roller-type heating furnace, characterized in that, The utility model relates to a kind of heating furnace, including: Furnace body (1), the furnace body (1) is rectangular structure, the furnace body (1) is opened with feed inlet in width direction one side, heating cavity is formed inside the furnace body (1), furnace lining (2) is arranged in the heating cavity inner wall, heating assembly (8) is arranged in the furnace lining (2) bottom, air-cooled structure is arranged in the heating cavity top; Furnace door (3), the furnace door (3) is slidably arranged on the furnace body (1), lifting mechanism is arranged on the furnace body (1), and the lifting mechanism is used to control furnace door (3) to open or close the feed inlet; Feed rack, the feed rack includes movable steel frame arranged along the length direction of heating cavity, a plurality of interval arranged roller bars (9) are arranged on the both sides of the length direction of steel frame, and the both ends of a plurality of roller bars (9) are rotatably arranged on the inner wall of heating cavity respectively, the roller bar (9) is stretched out in the heating cavity at the same end, and the stretched end of the roller bar (9) is sleeved with two sprockets (11), so that two groups of sprocket groups are formed between adjacent roller bars (9), and the chain engaged with each other is sleeved on each sprocket group, wherein any group of sprocket groups is driven by a speed reducer.

2. The roller hearth furnace of claim 1, wherein, The heating assembly (8) includes high-temperature resistance band, and the high-temperature resistance band is installed on the furnace lining (2) by high-temperature porcelain nails.

3. The roller hearth furnace of claim 1, wherein, The furnace lining (2) is a high-temperature resistant fiber module, and the high-temperature resistant fiber module is installed on the inner wall of the furnace body (1) by riveting.

4. The roller hearth furnace of claim 3, wherein, The surface of the furnace lining (2) is sprayed with a high-temperature curing agent to form a heat insulation wall.

5. The roller hearth furnace of claim 4, wherein, The air-cooled structure includes a circulating assembly and a hot air deflector (4); The hot air deflector (4) is arranged on the furnace lining (2); The circulating assembly includes a circulating fan (5) arranged on the furnace body (1); The output end of the circulating fan (5) is connected with a stirring shaft (6), and the lower end of the stirring shaft (6) penetrates out of the furnace lining (2); The lower end of the stirring shaft (6) is sleeved with a circulating fan blade (7).

6. The roller hearth furnace of claim 1, wherein, The lifting mechanism includes an electric speed reducer arranged on the furnace body (1); The output end of the electric speed reducer is connected with a lifting shaft, and the lifting shaft is vertically arranged; The upper end of the lifting shaft is fixedly connected with the furnace door (3) through a connecting rod.

7. The roller hearth furnace of claim 6, wherein, A temperature controller and a thermocouple are also arranged on the furnace body (1), and the temperature controller is electrically connected with the thermocouple.

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