Aluminum bar heating furnace

Abstract

The utility model discloses an aluminum bar heating furnace. A feeding conveying mechanism and a discharging conveying mechanism are arranged on the two sides of a rack respectively. The rack is provided with a heating cavity, an air suction pipe, a circulating fan, an air supply pipe, a combustion device, an air outlet pipe, an air falling groove, a first air distribution pipe and a second air distribution pipe. The circulating air channel and the air falling groove are formed among the heating cavity, the circulating fan and the combustion device to exhaust air downwards, meanwhile, the air suction pipe draws air upwards, hot air is conveyed in a circulating mode to heat an aluminum bar, and the effect that the aluminum bar is heated evenly is achieved; in addition, hot air is distributed through the first air distribution pipe and the second air distribution pipe to be directly sprayed on the aluminum bar, so that the heating speed of the aluminum bar is increased, the temperature uniformity of the aluminum bar is improved, meanwhile, hot air blown out of the side face of the second air distribution pipe passes through the bottom face of the aluminum bar through the air suction direction of the circulating fan, the bottom of the aluminum bar can be heated at the same time, and energy consumption is reduced. And the product yield and the yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum rod heating furnaces, and more specifically, particularly relates to an aluminum rod heating furnace. Background Art

[0002] In the field of aluminum profile processing, extruders are mainly used to extrude aluminum rods. Before the aluminum rods are fed into the extruder, they need to be heated first. A heating furnace is a device commonly used in the pre-process of aluminum extrusion, which is used to heat the aluminum rods. The commonly used aluminum rod heating furnaces currently use a hot air heating structure. The fan blows the wind through the combustion device to form hot air, and guides the hot air to blow toward the aluminum rods, and uses the hot air to heat the aluminum rods. This method has a simple structure and low cost, but the heating uniformity is not high, the heating range is small, and the number of heated aluminum rods is limited; in addition, the hot air after blowing out cannot be effectively utilized, and the energy consumption is high. Utility Model Content

[0003] The utility model provides an aluminum rod heating furnace to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: an aluminum rod heating furnace, comprising a frame, and a feeding conveying mechanism and a discharging conveying mechanism are respectively provided on both sides of the frame; a heating chamber, an air suction pipe, a circulating fan, an air supply pipe, a combustion device, an air outlet pipe, a downwind trough, a first air branch pipe and a second air branch pipe are provided on the frame; an aluminum rod conveying mechanism is provided in the heating chamber, one end of the heating chamber is connected to the air suction pipe, and the other end is connected to the downwind trough; a plurality of exhaust holes are provided at the bottom of the downwind trough; the air suction pipe, the circulating fan, the air supply pipe, the combustion device, the air outlet pipe and the downwind trough are connected in sequence; one end of the first air branch pipe is connected to the side of the downwind trough, and the other end is connected to the side of the second air branch pipe; the second air branch pipe is provided with a plurality of air branch holes.

[0004] Preferably, the air distribution holes include front air holes and side air holes, the front air holes are arranged toward the bottom of the discharging conveying mechanism, and the side air holes are arranged toward the aluminum rod conveying mechanism.

[0005] Preferably, the angle between the air outlet direction of the front air hole and the air outlet direction of the side air hole is 45 degrees.

[0006] Preferably, a plurality of grooves are provided at the bottom of the air drop groove, the cross section of the groove is a trapezoidal structure, and the exhaust holes are provided at the bottom of the groove.

[0007] Preferably, the aluminum rod conveying mechanism is provided with a plurality of conveying units with a drop, which include a left conveying unit and a right conveying unit, the feed conveying mechanism is arranged on the outside of the left conveying unit, and the discharge conveying mechanism is arranged on the outside of the right conveying unit; the air outlet range of the exhaust holes of the air drop trough covers the right conveying unit and the discharge conveying mechanism; some of the air distribution holes on the second air distribution pipe are arranged toward the bottom of the discharge conveying mechanism.

[0008] Preferably, it further includes a secondary fan disposed on the first air branch duct, and the secondary wind is used to drive the airflow in the first air branch duct to flow into the second air branch duct at an accelerated speed.

[0009] Preferably, the circulation fan is a stainless steel fan.

[0010] Preferably, the circulating fan and the combustion device are both arranged on the top of the frame.

[0011] Preferably, it further comprises a sensor control module, a plurality of temperature sensors and a plurality of air pressure sensors, wherein the temperature sensors and the air pressure sensors are respectively arranged inside the heating chamber, and the sensor control module is respectively electrically connected to the temperature sensors and the air pressure sensors.

[0012] Preferably, an alarm device connected to the sensor control module is also included, and the alarm device is a sound alarm, a light alarm or a buzzer alarm.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model forms a circulating air duct between the heating chamber, the circulating fan and the combustion device, the air drop slot exhausts air downward, and the air suction pipe draws air upward, and the aluminum rod is heated by circulating hot air, so that the aluminum rod is heated evenly; in addition, the hot air is directly sprayed on the aluminum rod through the first and second branch air ducts to accelerate the heating speed of the aluminum rod and improve the temperature uniformity of the aluminum rod. At the same time, the air suction direction of the circulating fan is used to make the hot air blown out from the side of the second branch air duct pass through the bottom surface of the aluminum rod, so that the bottom of the aluminum holder can be heated at the same time, reducing energy consumption, and increasing product output and finished product rate. The utility model has a reasonable design, a simple structure, and good heating uniformity of the aluminum rod, which helps to improve productivity and energy saving effects, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional structural diagram of an aluminum rod heating furnace according to an embodiment of the utility model;

[0015] Figure 2 It is a cross-sectional structural diagram of the aluminum rod heating furnace of an embodiment of the utility model from another angle;

[0016] exist Figure 1 and Figure 2 In the figure, the direction indicated by the arrow is the direction of air flow, and the corresponding relationship between the names of the components and the numbers of the drawings is as follows:

[0017] 1--frame, 2--feeding conveying mechanism, 3--discharging conveying mechanism, 4--heating chamber, 5--air suction pipe, 6--circulating fan, 7--air supply pipe, 8--combustion device, 9--air outlet pipe, 10--air drop slot, 101--exhaust hole, 102--groove, 11--first branch air duct, 12--second branch air duct, 121--front air hole, 122--side air hole, 13--aluminum rod conveying mechanism, 131--left conveying unit, 132--right conveying unit. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The attached drawings are only for reference and explanation purposes and are not used to limit the disclosed embodiments. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0019] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Please refer to Figure 1 and Figure 2The utility model provides an aluminum rod heating furnace, comprising a frame 1, on both sides of which a feeding conveying mechanism 2 and a discharging conveying mechanism 3 are respectively arranged; a heating chamber 4, an air suction pipe 5, a circulating fan 6, an air supply pipe 7, a combustion device 8, an air outlet pipe 9, an air drop groove 10, a first air distribution pipe 11 and a second air distribution pipe 12 are arranged on the frame 1; an aluminum rod conveying mechanism 13 is arranged in the heating chamber 4, one end of the heating chamber 4 is connected to the air suction pipe 5, and the other end is connected to the air drop groove 10; a plurality of exhaust holes 101 are arranged at the bottom of the air drop groove 10; the air suction pipe 5, the circulating fan 6, the air supply pipe 7, the combustion device 8, the air outlet pipe 9 and the air drop groove 10 are connected in sequence; one end of the first air distribution pipe 11 is connected to the side of the air drop groove 10, and the other end is connected to the side of the second air distribution pipe 12; the second air distribution pipe 12 is provided with a plurality of air distribution holes.

[0022] In the embodiment of the utility model, the interior of the heating chamber 4 is hollow and can accommodate the aluminum rod conveying mechanism 13, the feeding conveying mechanism 2 and the discharging conveying mechanism 3, so as to heat the aluminum rod during the conveying process and reduce the downtime waiting time of the aluminum rod. The combustion device 8 generates heat energy through the combustion chamber and the combustion pipeline, and heats the passing airflow to make it hot air. In this embodiment, the circulating fan 6, the air supply pipe 7, the combustion device 8, the air outlet pipe 9, the air drop groove 10, the heating chamber 4 and the air suction pipe 5 are connected in sequence and connected end to end to form a circulating air duct.

[0023] During operation, the air flow blown by the circulating fan 6 enters the combustion device 8 through the air supply pipe 7. The combustion device 8 heats the air flow. The heated hot air is guided by the air outlet pipe 9 into the air drop groove 10, and then sprayed from the exhaust holes 101 at the bottom of the air drop groove 10 to the aluminum rods on the aluminum rod conveying mechanism 13. The suction pipe 5 forms a negative pressure due to the external air supply of the circulating fan 6. The suction pipe 5 sucks the hot air in the heating chamber 4 and sends it into the circulating fan 6 to enter the next round of circulating heating.

[0024] Since the hot air is directly sprayed onto the upper end surface of the aluminum rod after being blown out from the exhaust hole 101, it is easy to cause the aluminum rod to be heated unevenly. Therefore, in this embodiment, a first air distribution pipe 11 is arranged on the side of the air drop groove 10 to guide the hot air to the second air distribution pipe 12. By setting air distribution holes on the second air distribution pipe 12 and blowing the hot air onto the bottom of the aluminum rod on the discharging conveying mechanism 3, the lower end surface of the aluminum rod can also be heated, the aluminum rod is heated evenly as a whole, and the heating effect is better.

[0025] In addition, under the suction effect of the circulating fan 6, the hot air blown out from under the aluminum rod will flow into the circulating fan 6 from the bottom of the heating chamber 4, so that the air at the bottom of the heating chamber 4 flows, thereby making the temperature distribution in the heating chamber 4 more uniform.

[0026] The working process of the utility model is as follows:

[0027] The feeding conveying mechanism 2 feeds the aluminum rod to the aluminum rod conveying mechanism 13 in the heating chamber 4, and the aluminum rod conveying mechanism 13 sequentially conveys the aluminum rod to the discharging conveying mechanism 3; the circulating fan 6 blows air to the combustion device 8, and the combustion device 8 forms hot air after heating. The hot air passes through the air outlet pipe 9 and enters the air drop groove 10, wherein a part of the hot air is sprayed from the exhaust hole 101 to the upper end face of the aluminum rod, and another part of the hot air is blown to the lower end face of the rod through the first air branch pipe 11 and the second air branch pipe 12, thereby heating the aluminum rod. The air suction pipe 5 guides the airflow in the heating chamber 4 to the circulating fan 6 for the next round of heating.

[0028] Preferably, the air distribution holes include a front air hole 121 and a side air hole 122 , the front air hole 121 is arranged toward the bottom of the discharging conveying mechanism 3 , and the side air hole 122 is arranged toward the aluminum rod conveying mechanism 13 .

[0029] In this embodiment, the multiple air holes on the second air duct 12 are divided into two categories, one of which is set on the front. The multiple front air holes 121 located on the front are set toward the bottom of the aluminum rod on the discharging conveying mechanism 3, and the hot air blown out directly heats the bottom of the corresponding aluminum rod, so that the aluminum rod has a fast heating speed and good heating uniformity. The side air holes 122 are used to guide the hot air to the bottom of the entire aluminum rod conveying mechanism 13 to increase the bottom heating area of ​​the aluminum rod on the aluminum rod conveying mechanism 13, and under the action of the suction pipe 5 and the circulating fan 6, the airflow blown to the bottom by the side air holes 122 is guided and transported upward, so that the fluidity of the airflow in the heating chamber 4 is good, the temperature uniformity of each place in the heating chamber 4 is better, and the overall heating of the aluminum rod is more uniform, which helps to improve the heating effect of the aluminum rod.

[0030] Preferably, the angle between the air outlet direction of the front air hole 121 and the air outlet direction of the side air hole 122 is 45 degrees.

[0031] Preferably, the bottom of the air drop groove 10 is provided with a plurality of grooves 102, the cross section of the groove 102 is a trapezoidal structure, and the exhaust hole 101 is provided at the bottom of the groove 102. Through the above structural design, the bottom of the air drop groove 10 has high structural strength, good air separation effect, and better directivity of hot air injection.

[0032] Preferably, the aluminum rod conveying mechanism 13 is provided with a plurality of conveying units with a drop, including a left conveying unit 131 and a right conveying unit 132, the feed conveying mechanism 2 is arranged on the outside of the left conveying unit 131, and the discharge conveying mechanism 3 is arranged on the outside of the right conveying unit 132; the air outlet range of the exhaust hole 101 of the air drop trough 10 covers the right conveying unit 132 and the discharge conveying mechanism 3; some of the air distribution holes on the second air distribution pipe 12 are arranged toward the bottom of the discharge conveying mechanism 3.

[0033] Preferably, a secondary fan is further included on the first air branch 11, and the secondary wind is used to drive the airflow in the first air branch 11 to accelerate and flow into the second air branch 12. The secondary fan is provided to help increase the delivery pressure of the first air branch 11 and the second air branch 12, so that the hot air can be sprayed to the bottom of the aluminum rod and the lower part of the heating chamber 4 faster and more efficiently.

[0034] Preferably, the circulation fan 6 is a stainless steel fan.

[0035] Preferably, the circulating fan 6 and the combustion device 8 are both arranged on the top of the frame 1 .

[0036] Preferably, it further comprises a sensor control module, a plurality of temperature sensors and a plurality of air pressure sensors, wherein the temperature sensor and the air pressure sensor are respectively arranged inside the heating chamber 4, and the sensor control module is respectively electrically connected to the temperature sensor and the air pressure sensor. By arranging a temperature sensor to detect the temperature inside the heating chamber 4, and arranging an air pressure sensor to detect the air pressure inside the heating chamber 4, the temperature uniformity and air pressure inside the heating chamber 4 can be more accurately detected, so as to better adjust the power of the circulating fan 6 and the combustion device, and achieve the effect of energy saving and emission reduction.

[0037] Preferably, an alarm device connected to the sensor control module is also included, and the alarm device is a sound alarm, a light alarm or a buzzer alarm. By setting the alarm device, once the temperature or air pressure value exceeds the set value, a reminder can be issued through the alarm device to provide staff with timely maintenance of the equipment.

[0038] Compared with the prior art, the utility model has the following beneficial effects: the utility model forms a circulating air duct between the heating chamber, the circulating fan and the combustion device, the air drop slot exhausts air downward, and the air suction pipe draws air upward, and the aluminum rod is heated by circulating hot air, so that the aluminum rod is heated evenly; in addition, the hot air is directly sprayed on the aluminum rod through the first and second branch air ducts to accelerate the heating speed of the aluminum rod and improve the temperature uniformity of the aluminum rod. At the same time, the air suction direction of the circulating fan is used to make the hot air blown out from the side of the second branch air duct pass through the bottom surface of the aluminum rod, so that the bottom of the aluminum holder can be heated at the same time, reducing energy consumption, and increasing product output and finished product rate. The utility model has a reasonable design, a simple structure, and good heating uniformity of the aluminum rod, which helps to improve productivity and energy saving effects, and reduce production costs.

[0039] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An aluminum rod heating furnace, characterized in that: The invention comprises a frame (1), wherein two sides of the frame are respectively provided with a feeding conveying mechanism (2) and a discharging conveying mechanism (3); the frame is provided with a heating chamber (4), an air suction pipe (5), a circulating fan (6), an air supply pipe (7), a combustion device (8), an air outlet pipe (9), an air drop groove (10), a first air distribution pipe (11) and a second air distribution pipe (12); an aluminum rod conveying mechanism (13) is provided in the heating chamber, one end of the heating chamber is connected to the air suction pipe, and the other end is connected to the air drop groove; a plurality of exhaust holes (101) are provided at the bottom of the air drop groove; the air suction pipe, the circulating fan, the air supply pipe, the combustion device, the air outlet pipe and the air drop groove are connected in sequence; one end of the first air distribution pipe is connected to the side of the air drop groove, and the other end is connected to the side of the second air distribution pipe; the second air distribution pipe is provided with a plurality of air distribution holes.

2. The aluminum rod heating furnace according to claim 1, characterized in that: The air distribution holes include front air holes (121) and side air holes (122); the front air holes are arranged toward the bottom of the discharge conveying mechanism, and the side air holes are arranged toward the aluminum rod conveying mechanism.

3. The aluminum rod heating furnace according to claim 2, characterized in that: The included angle between the air outlet direction of the front air hole and the air outlet direction of the side air hole is 45 degrees.

4. The aluminum rod heating furnace according to claim 1, characterized in that: The bottom of the air drop groove is provided with a plurality of grooves (102), the cross section of the groove is a trapezoidal structure, and the air exhaust hole is arranged at the bottom of the groove.

5. The aluminum rod heating furnace according to claim 4, characterized in that: The aluminum rod conveying mechanism is provided with a plurality of conveying units with a drop, including a left conveying unit (131) and a right conveying unit (132); the feeding conveying mechanism is arranged on the outside of the left conveying unit, and the discharging conveying mechanism is arranged on the outside of the right conveying unit; the air outlet range of the exhaust hole of the air drop groove covers the right conveying unit and the discharging conveying mechanism; part of the air distribution holes on the second air distribution pipe are arranged toward the bottom of the discharging conveying mechanism.

6. The aluminum rod heating furnace according to claim 1, characterized in that: It also includes a secondary fan disposed on the first air branch duct, and the secondary wind is used to drive the airflow in the first air branch duct to flow into the second air branch duct at an accelerated speed.

7. The aluminum rod heating furnace according to claim 1, characterized in that: The circulating fan is a stainless steel fan.

8. The aluminum rod heating furnace according to claim 1, characterized in that: The circulating fan and the combustion device are both arranged on the top of the frame.

9. The aluminum rod heating furnace according to any one of claims 1 to 8, characterized in that: It also includes a sensor control module, a plurality of temperature sensors and a plurality of air pressure sensors. The temperature sensors and the air pressure sensors are respectively arranged inside the heating chamber, and the sensor control module is electrically connected to the temperature sensors and the air pressure sensors respectively.

10. The aluminum rod heating furnace according to claim 9, characterized in that: It also includes an alarm device connected to the sensor control module, and the alarm device is a sound alarm, a light alarm or a buzzer alarm.

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