CN102297589B - A Rotary Fully Automatic Aluminum Rod Heating Furnace - Google Patents

Abstract

The invention discloses a rotary full-automatic aluminum bar heating furnace which is characterized by comprising a heat-insulating outer furnace body, wherein a hearth is arranged in the outer furnace body, a rotatable aluminum bar rack and a heating device which are used for placing an aluminum bar are arranged in the hearth, the aluminum bar rack is sealed in the hearth, a driving device for driving the aluminum bar rack to rotate is connected onto the aluminum bar rack, and a furnace door for taking and installing the aluminum bar is arranged on the outer furnace body. The invention aims to overcome the defects of the prior art and provide the rotary full-automatic aluminum bar heating furnace which is energy-saving, uniform in heating, simple in structure and low in cost.

Description

A Rotary Fully Automatic Aluminum Rod Heating Furnace

【Technical field】

The invention relates to a processing equipment for aluminum extruded profiles, more specifically a rotary automatic aluminum rod heating furnace.

【Background technique】

Before the aluminum rods are extruded into aluminum profiles, the short rods need to be heated slowly and evenly. The existing aluminum rod heating furnaces are rectangular straight-through furnaces with a length of about 12 meters. The furnace body enters the end and exits. The heating furnace has the following defects:

1. The energy consumption is high, and at the same time, the heat loss will make the temperature rise of the surrounding environment worse

The furnace doors at the entrance and exit must be very large, and cannot be closed due to the circulation of aluminum rods in and out, and the conveyor chain that must extend out of the furnace body cannot be sealed with the furnace body, and the hot air in the furnace will be directly dissipated and lost to the furnace through convection. in the outside air. Cycling the chain in and out of itself also brings out a lot of heat. It causes double waste of energy that needs to be replenished for cooling down in the furnace and needs to be processed for heating up in the workshop outside the furnace.

2. Occupies a large area

Straight-through linear layout, 12 meters long, occupies a large area, which is not conducive to site layout.

3. Poor heating quality

Because the heating heat source is heated from one point or two points, and the heating channel is very long, the temperature in the furnace cannot be guaranteed, which will lead to uneven heating of the aluminum rod, resulting in a large temperature difference of the aluminum rod, overheating of the rod or surface cracking. Bubbly or unfamiliar surface or insufficient temperature in the middle will bring difficulties to extrusion and cannot guarantee the quality of extruded products.

4. Inconvenient to use

Since the straight-through aluminum rod heating furnace cannot arbitrarily pick and place any one of the aluminum rods, it is not conducive to automatic operation and heating memory of the aluminum rods. In addition, since the straight-through aluminum rod heating furnace can only be first in first out, last in last out, the order of the furnace cannot be changed, it is necessary to heat aluminum rods of various materials, and the aluminum rods of the advanced furnace need to be used before the aluminum rods of the advanced furnace are used , can only take out the aluminum rods of the advanced furnace to cool, and then take out the aluminum rods that enter the furnace, which will cause a lot of energy waste and cause the temperature rise of the surrounding environment to deteriorate, inconvenient to use, and the working environment of the operators is bad.

【Content of invention】

The object of the invention is to overcome the deficiencies of the prior art and provide a rotary automatic aluminum rod heating furnace with energy saving, uniform heating, simple structure and low cost.

The present invention is achieved through the following technical solutions:

A rotary full-automatic aluminum rod heating furnace, characterized in that it includes a heat-insulated outer furnace body 1, and a furnace 101 is provided inside the outer furnace body 1, and a rotatable furnace for An aluminum rod rack 5 and a heating device 4 for placing aluminum rods, the aluminum rod rack 5 is enclosed in the furnace 101, and the aluminum rod rack 5 is connected with a driving device 7 for driving it to rotate, and the The outer furnace body 1 is provided with a furnace door 6 for loading and unloading aluminum rods.

The above-mentioned rotary full-automatic aluminum rod heating furnace is characterized in that: the inner furnace body 2 is provided in the furnace 101, the inner furnace body 2 is provided with an inner furnace body 201, and the inner furnace body 2 is provided with a hot gas outlet 202 and a circulation air inlet 206 connecting the furnace 101 and the inner furnace 201, and the hot gas outlet 202 is provided to pump the hot gas in the inner furnace 201 to the The circulation exhaust device 3 in the furnace 101 described above, the heating device 4 is arranged in the inner furnace 201, and the aluminum rod holder 5 is arranged between the inner furnace body 2 and the outer furnace body 1 Inside the furnace 101.

The above-mentioned rotary automatic aluminum rod heating furnace is characterized in that: the hot gas outlet 202 is arranged on the top of the inner furnace 201 , and the circulation air inlet 206 is arranged at the bottom of the inner furnace 201 .

The above-mentioned rotary automatic aluminum rod heating furnace is characterized in that: the heating device 4 is an electric heating wire.

The above-mentioned rotary automatic aluminum rod heating furnace is characterized in that: the heating device 4 is an ignition device, the bottom of the inner furnace 201 is provided with a fuel feeding hole 205, and the outer furnace body 1 is There is an exhaust hole 103 connecting the furnace 101 with the outside world.

The above-mentioned rotary automatic aluminum rod heating furnace is characterized in that the outer furnace body 1 is a cylinder with an upper end closed and a lower end open.

The above-mentioned rotary full-automatic aluminum rod heating furnace is characterized in that: the inner furnace body 2 includes a cylindrical inner furnace body upper section 203 and a heat-insulating bottom plate that forms a seal with the lower part of the outer furnace body 1 204 , the inner furnace 201 is surrounded by the upper section 203 of the inner furnace body and the heat insulation bottom plate 204 .

The above-mentioned rotary full-automatic aluminum rod heating furnace is characterized in that: the aluminum rod holder 5 is arranged on the heat-insulating bottom plate 204 and arranged in a circumferential array around the inner furnace body upper section 203 so that the aluminum rods can Load radially on it along the upper section 203 of the inner furnace body.

The above-mentioned rotary automatic aluminum rod heating furnace is characterized in that a door opening cylinder 601 is connected to the outer side of the furnace door 6 .

Compared with prior art, the present invention has following advantage:

1. Energy saving

The invention can be completely closed, the entrance and exit of the rod is very small and the single door is automatically closed, the opening time is short, the convection can be reduced by more than 95%, the sealing performance is good, the hot gas in the furnace is rarely lost to the outside air, and the energy is greatly saved , Save energy by 70%. Moreover, the temperature rise of the surrounding air is very small, and there is no need for cooling treatment in the factory building.

2. Small footprint

The outer furnace body of the present invention is in the shape of a cylinder, occupies a small area of about 3 meters in diameter, and is easy to realize site layout.

3. Good heating quality

The invention adopts circulating hot air for heating, the temperature difference in the heating area is small, the aluminum rod is heated evenly, and the phenomenon of overheating or undercooking will never occur.

4. Easy to use

1 The present invention adopts automatic control of PLC system and touch screen operation to realize automatic entry and exit of aluminum rods and heating memory of aluminum rods. Save manpower and avoid mistakes.

2. The present invention can arbitrarily select aluminum rods to be released from the furnace. When it is necessary to heat various aluminum rods and the aluminum rods in the advanced furnace need to be used before they are used up, it is not necessary to take out the aluminum rods in the advanced furnace for cooling, and then take them out and put them into the furnace. Instead of using aluminum rods, just leave them in the furnace, which saves energy, is convenient to use, protects the environment, and improves the working environment of operators.

【Description of drawings】

Fig. 1 is a perspective view of the present invention;

Fig. 2 is a perspective view of the present invention;

Fig. 3 is an exploded view of the present invention;

Fig. 4 is a sectional view of the present invention;

Fig. 5 is a sectional view of the heating device of the present invention as an electric heating wire;

Fig. 6 is a three-dimensional view of the inner furnace body of the present invention;

Fig. 7 is a cross-sectional view of the heating device of the present invention as an ignition device;

Fig. 8 is a schematic diagram of the air flow direction of the present invention;

Fig. 9 is a state view of the present invention in cooperation with the manipulator.

【Detailed ways】

A rotary full-automatic aluminum rod heating furnace, comprising a heat-insulated outer furnace body 1, a furnace 101 is provided inside the outer furnace body 1, and a rotatable container for placing aluminum rods is arranged inside the furnace 101. The aluminum rod holder 5 and the heating device 4, the aluminum rod holder 5 is closed in the furnace 101, the aluminum rod holder 5 is connected with a driving device 7 for driving its rotation, and the outer furnace body 1 A furnace door 6 for taking and loading aluminum rods is provided on the top.

The furnace 101 is provided with an inner furnace body 2, the inner furnace body 2 is provided with an inner furnace body 201, and the inner furnace body 2 is provided with a The hot gas outlet 202 and the circulation air inlet 206, the hot gas outlet 202 is provided with a circulation exhaust device 3 that pumps the hot gas in the inner furnace 201 into the furnace 101, and the heating device 4 It is arranged in the inner furnace 201 , and the aluminum rod holder 5 is arranged in the furnace 101 between the inner furnace body 2 and the outer furnace body 1 .

The hot gas outlet 202 is arranged at the top of the inner furnace 201 , and the circulation air inlet 206 is arranged at the bottom of the inner furnace 201 .

The heating device 4 can be an electric heating wire.

The heating device 4 can also be an ignition device, and the bottom of the inner furnace 201 is provided with a fuel feeding hole 205, which can input gas mixture gas or oil-gas mixture gas, which is ignited and heated by the ignition device, and the outer furnace body 1 There is an exhaust hole 103 connecting the furnace 101 with the outside world to discharge excess gas and prevent the internal pressure of the furnace 101 from rising.

The outer furnace body 1 is a cylinder with a closed upper end and an open lower end, and the inner furnace body 2 includes a cylindrical inner furnace body upper section 203 and a thermal insulation bottom plate 204 that forms a seal with the lower part of the outer furnace body 1 , the inner furnace 201 is surrounded by the upper section 203 of the inner furnace body and the heat insulating bottom plate 204 .

The aluminum rod holder 5 is arranged on the heat insulation bottom plate 204 and arranged in a circumferential array around the upper inner furnace body section 203 so that aluminum rods can be loaded thereon radially along the upper inner furnace body section 203 .

The circulation exhaust device 3 is a stirring fan.

The outside of the furnace door 6 is connected with a door-opening cylinder 601, which can realize automatic control of the furnace door. At the same time, an automatic grabbing manipulator device 9 is used to cooperate with taking out and loading aluminum rods.

The automatic grabbing manipulator device 9 includes a support 901, and the support 901 is provided with a lifting platform 902. The lifting platform 902 is driven up and down by a screw mechanism 903, and the lifting platform 902 is provided with a manipulator 904. To drive the grabbing action, the lifting table 902 is provided with a flipping bucket 907 that accepts the aluminum rods dropped from the manipulator and flips them into the chute 906. The other side of the lifting table 902 is provided with a aluminum Conveyor lane on stage 902.

A touch screen and a PLC control system can be set to control the rotation of the driving device 7, and the control can allow any aluminum rod rack to rotate to the furnace door position for loading and taking out aluminum rods. The heating time, material, and location can be memorized, and the required aluminum rod can only be taken out after the time is up.

The working principle of the present invention:

The door opening cylinder is controlled by the control system to open a single furnace door, put aluminum bars one by one, start the heating device to heat the air in the inner furnace, and pump the hot air in the inner furnace to the furnace through the circulation exhaust device for heating. Aluminum rods on the aluminum rod rack, the circulating air flow enters the inner furnace from the circulating air inlet for reheating.

The invention adopts the rotating inner furnace body and the outer furnace body to feed and discharge materials, which can be completely closed, the door for entering and exiting rods is small, and a single door is automatically closed, the door opening time is short, 95% of convection can be reduced, and the sealing performance is good. The hot air is rarely dissipated and lost to the outside air, and the temperature rise of the surrounding air is very small, only 1-2 degrees. There is no need for cooling treatment in the factory building, which greatly saves energy, saving more than 70% of energy. The furnace body is cylindrical and occupies a small area, making it easy to realize site layout. Circulating hot air heating, the aluminum rods are heated evenly, and there will never be overheating or undercooking. It adopts PLC system automatic control and touch screen operation, which is convenient for automatic operation and heating and memory of aluminum rods. Aluminum rods can be selected arbitrarily to be released from the furnace. Aluminum rods of various materials need to be heated and the aluminum rods in the advanced furnace need to be used before they are used up. Instead, just leave it in the furnace, which saves energy, is convenient to use, protects the environment, and improves the working environment of the operator.

Claims (8)

1. rotary-type full-automatic aluminum bar heating furnace, it is characterized in that: comprise heat insulation external furnace body (1), be provided with burner hearth (101) in described external furnace body (1), be provided with rotatable aluminium bar frame (5) and heating unit (4) for placing aluminium bar in described burner hearth (101), described aluminium bar frame (5) is closed in described burner hearth (101), be connected with the drive unit (7) that drives its rotation on described aluminium bar frame (5), described external furnace body (1) is provided be used to the fire door (6) of getting the dress aluminium bar, be provided with inner furnace body (2) in described burner hearth (101), be provided with internal furnace (201) in described inner furnace body (2), described inner furnace body (2) is provided with heat outlet (202) and the circulation inlet mouth (206) that is communicated with described burner hearth (101) and described internal furnace (201), described heat outlet (202) is located to be provided with the hot gas in described internal furnace (201) is pumped to the interior circulation extractor fan (3) of described burner hearth (101), described heating unit (4) is arranged in described internal furnace (201), described aluminium bar frame (5) is arranged in burner hearth (101) between described inner furnace body (2) and external furnace body (1), described fire door (6) outside is provided with the automatic catching robot device (9) of taking-up and the aluminium bar of packing into, described automatic catching robot device (9) comprises support (901), described support (901) is provided with lifting table (902), described lifting table (902) drives lifting by screw body (903), described lifting table (902) is provided with mechanical manipulator (904), mechanical manipulator (904) drives grasping movement by cylinder (905), described lifting table (902) is provided with to be accepted the aluminium bar that puts down on hand from machinery and upset and pours upset bucket (907) in chute (906) into.

2. rotary-type full-automatic aluminum bar heating furnace according to claim 1, it is characterized in that: described heat outlet (202) is arranged on the top of described internal furnace (201), and described circulation inlet mouth (206) is arranged on the bottom of internal furnace (201).

3. rotary-type full-automatic aluminum bar heating furnace according to claim 1, it is characterized in that: described heating unit (4) is nichrome wire.

4. rotary-type full-automatic aluminum bar heating furnace according to claim 1, it is characterized in that: described heating unit (4) is portfire, described internal furnace (201) bottom is provided with fuel-feed hole (205), and described external furnace body (1) is provided with the venting hole (103) that is communicated with burner hearth (101) and the external world.

5. rotary-type full-automatic aluminum bar heating furnace according to claim 1, it is characterized in that: described external furnace body (1) is the cylinder of upper end closed lower ending opening.

6. rotary-type full-automatic aluminum bar heating furnace according to claim 5, it is characterized in that: described inner furnace body (2) comprises inner furnace body epimere cylindraceous (203) and the heat insulation bottom board (204) that seals with the formation of described external furnace body (1) bottom, and described internal furnace (201) is surrounded by described inner furnace body epimere (203) and described heat insulation bottom board (204).

7. rotary-type full-automatic aluminum bar heating furnace according to claim 6 is characterized in that: described aluminium bar frame (5) is arranged on that described heat insulation bottom board (204) is upper is arranged so that around described inner furnace body epimere (203) circumference array aluminium bar can radially load along described inner furnace body epimere (203) thereon.

8. rotary-type full-automatic aluminum bar heating furnace according to claim 1, is characterized in that: be connected with the cylinder that opens the door (601) outside described fire door (6).

Images