Aluminum rod heating furnace

Abstract

The present invention relates to the technical field of heating furnaces, and in particular to an aluminum rod heating furnace. The present invention comprises a bottom plate and a heating furnace body, wherein a plurality of feeding rollers for feeding are arranged on the outer side of one end of the heating furnace body, and an induction coil for electromagnetic induction heating of the aluminum rod is arranged inside the end of the heating furnace body close to the feeding roller. The present invention is provided with an overvoltage monitoring sensor. When the voltage is too high, and the voltage is higher than the maximum voltage preset value of the overvoltage monitoring sensor, the overvoltage monitoring sensor will control the electromagnetic conversion switch to switch the connection of the circuit, and the contact of the electromagnetic conversion switch will change from abutting with contact one to abutting with contact two, thereby connecting the vibration motor and the heating plate in series into the circuit. On the one hand, it can effectively reduce the voltage of the induction coil, which is conducive to avoiding the situation where the induction coil is over-voltage and the operation of the equipment is affected. On the other hand, it can also enable the vibration motor and the heating plate to work effectively.

Description

Technical Field

[0001] The invention relates to the field of heating furnaces, in particular to an aluminum rod heating furnace. Background Art

[0002] ‌Aluminum rod heating furnace‌ is a kind of equipment specially used for heating aluminum rods, which is widely used in the pre-process of aluminum forging and extrusion. Its main function is to heat the aluminum rod to the required temperature to ensure that the aluminum rod can achieve the ideal processing effect during the forging or extrusion process.

[0003] A patent with the announcement number CN113048784B discloses an aluminum rod heating furnace, which includes a furnace body; one end of the furnace body is provided with a material inlet, and the other end of the furnace body is provided with a material outlet; a conveying component and a heating component for conveying aluminum rods are provided in the furnace body.

[0004] However, the above-mentioned heating furnace still has certain defects when in use. In the prior art, electromagnetic induction heating is usually used to effectively heat the aluminum rod. However, during the heating process, the resistance inside the heating element will gradually increase, resulting in a smaller current and a larger inductance, thereby forming a sponge effect. This effect will cause the heating voltage to increase. If it exceeds the voltage resistance range of the equipment, overvoltage will occur, and overvoltage will easily affect the normal operation of the equipment. Secondly, when there are impurities on the surface of the aluminum rod, during the heating process, the heat conduction of the aluminum rod will often be affected by the presence of impurities, thereby reducing the heating efficiency of the aluminum rod. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an aluminum rod heating furnace.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an aluminum rod heating furnace, comprising a bottom plate and a heating furnace body, a plurality of feeding rollers for feeding are arranged on the outer side of one end of the heating furnace body, an induction coil for electromagnetic induction heating of the aluminum rod is arranged inside the end of the heating furnace body close to the feeding roller, the induction coil is electrically connected to an overvoltage monitoring sensor, a combustion chamber for keeping the aluminum rod warm is arranged at the end of the heating furnace body away from the induction coil, a fan for supplying air to the combustion chamber is arranged above one side of the bottom plate, a vibration motor for cleaning the aluminum rod is transmission-connected to the bottom of the feeding roller, and the air blown out by the fan is also used to clean the induction coil and the aluminum rod.

[0007] Preferably, the heating furnace body is fixedly connected to the top of the base plate, and a heating hole for the aluminum rod to pass through is opened on the heating furnace body. One side of the combustion chamber is connected to multiple gas pipelines, and the gas pipelines pass through the side wall of the heating furnace body, and the gas pipelines are connected to an external gas source. The bottom of the fan is fixedly connected to a pillar, and the pillar is fixedly connected to the top of the base plate. The output end of the fan is connected to an air duct, and the end of the air duct away from the fan is connected to the combustion chamber, and a plate valve is provided at the connection between the two, and the connection between the air duct and the combustion chamber is located above the gas pipeline.

[0008] Preferably, a partition is fixedly connected to one side of the interior of the combustion chamber, and the connection point between the air duct and the combustion chamber is located below the partition. An air cavity is opened inside the heating furnace body, and the air cavity is located between the combustion chamber and the induction coil. An air outlet is provided between the air cavity and the combustion chamber, and the two are connected through the air outlet. A side of the air cavity away from the air outlet is connected with multiple air holes, and the multiple air holes are facing the direction of the induction coil.

[0009] Preferably, a support frame with a "Y"-shaped cross-section is fixedly connected at the top center of one end of the base plate, a plurality of feeding rollers are rotatably connected to the side wall panels on the top of the support frame, a vibration motor is fixedly connected to the end wall panel of the support frame close to the heating furnace body, a feeding plate is fixedly connected to one side of the top of the support frame, the feeding plate is used to place the aluminum rods to be heated, and a plurality of legs are fixedly connected to the bottom of the feeding plate, and the legs are fixedly connected to the base plate.

[0010] Preferably, a water tank is fixedly connected to the bottom of the feeding plate, a heating plate is fixedly connected to the inside of the water tank, the induction coil and the overvoltage monitoring sensor are connected in series, one end of the overvoltage monitoring sensor away from the induction coil is electrically connected to the AC power supply, one end of the AC power supply away from the overvoltage monitoring sensor is electrically connected to an electromagnetic conversion switch, the electromagnetic conversion switch is communicatively connected to the overvoltage monitoring sensor, one end of the induction coil away from the overvoltage monitoring sensor is electrically connected to line one and line two, and the electrical connection between line one and line two and the AC power supply is controlled by the electromagnetic conversion switch.

[0011] Preferably, the circuit 1 includes a contact 1, and the contact 1 is electrically connected to the induction coil away from the overvoltage monitoring sensor through a wire;

[0012] The circuit 2 includes contact 2, the heating plate and the vibration motor are connected in series between contact 2 and the induction coil, contact 2, the vibration motor, the heating plate and the induction coil are connected in series in sequence, and the electromagnetic conversion switch is provided with a contact, which is used to abut against contact 1 or contact 2.

[0013] Preferably, a discharge port is provided at the bottom of one end of the heating furnace body near the loading roller, a discharge box body is fixedly connected to the bottom of the discharge port, the top of the discharge box body is communicated with the discharge port, draft box bodies are fixedly connected to both sides of the top of the discharge box body, and the two sides of the top of the discharge box body are respectively communicated with two draft box bodies, a rectangular opening is provided on the side of the draft box body near the loading roller, a draft plate with a "U"-shaped cross-section is fixedly connected to the bottom of the rectangular opening, and the end of the draft plate away from the rectangular opening faces the loading roller.

[0014] Preferably, a collecting box is fixedly connected to one side of the bottom of the discharging box body, the collecting box is communicated with one side of the bottom of the discharging box body, an electric sealing plate is provided at one end of the collecting box away from the discharging box body, and a filter is provided at one end of the electric sealing plate close to the discharging box body.

[0015] Preferably, a pressure relief pipe is connected to one side of the top of the water tank, a pressure valve is provided at the connection between the pressure relief pipe and the water tank, the end of the pressure relief pipe away from the water tank is connected to a fixed box body, the fixed box body is fixedly connected to the side of the bottom of the discharging box body away from the collecting box, the end of the fixed box body away from the pressure relief pipe is connected to the discharging box body, and a hinged plate is rotatably installed at the connection between the two, a fixed shaft is rotatably sleeved on the top of the hinged plate, and both ends of the fixed shaft are respectively fixedly connected to the two side wall panels of the discharging box body.

[0016] Preferably, an inclined plate is fixedly connected to the interior of the fixed box body, a gap is reserved between the bottom of the inclined plate and the inner bottom wall plate of the fixed box body, and the fixed box body is inclined downward from the pressure relief pipe to the hinged plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention sets an overvoltage monitoring sensor. When the voltage is too high, that is, when the voltage is higher than the maximum voltage preset value of the overvoltage monitoring sensor, the overvoltage monitoring sensor will control the electromagnetic conversion switch to switch the connection of the circuit. The contact of the electromagnetic conversion switch will change from abutting against contact one to abutting against contact two, thereby connecting the vibration motor and the heating plate in series into the circuit. On the one hand, it can effectively reduce the voltage of the induction coil, which is beneficial to avoid the situation where the induction coil is over-voltage and the operation of the equipment is affected. On the other hand, it can also enable the vibration motor and the heating plate to work effectively.

[0019] 2. The present invention provides a blower and an air cavity. After the heated air enters the air cavity, it is discharged through the air holes and then blown around the induction coil. On the one hand, the dust falling on the surface of the induction coil can be blown off, which is beneficial to avoid the surface of the induction coil being damaged due to impurities or aluminum chips on the surface. On the other hand, part of the gas blown on the induction coil will also be blown onto the aluminum rod under the shielding of the induction coil, which is beneficial to blow off the dust or impurities on the surface of the aluminum rod, which is beneficial to avoid the impurities on the surface of the aluminum rod affecting the heat conduction of the aluminum rod, thereby reducing the heating efficiency of the aluminum rod. At the same time, the heated gas blown on the aluminum rod can also help maintain the dryness of the aluminum rod.

[0020] 3. The present invention arranges a vibration motor and a heating plate. After the vibration motor is started, it will cause the feeding roller to vibrate through the support frame, and then drive the aluminum rod on the feeding roller to vibrate, which is beneficial to shake off the impurities attached to the surface of the feeding roller, and further ensure the cleanliness of the surface of the aluminum rod. After the heating plate is turned on, it will effectively heat the water in the water tank. After the water in the water tank is heated, the temperature of the feeding plate will rise, and then the aluminum rod placed on the top of the feeding plate will be further preheated, which is beneficial to avoid the situation that the aluminum rod is not heated sufficiently due to insufficient voltage of the induction coil after the over-voltage protection of the induction coil. By utilizing the effective preheating of the aluminum rod, the heating efficiency of the aluminum rod can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0023] Figure 3 It is a schematic cross-sectional view of the structure of the heating furnace body of the present invention;

[0024] Figure 4 It is a schematic cross-sectional view of the structure of the combustion chamber of the present invention;

[0025] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the structure of section A is shown;

[0026] Figure 6 It is a schematic cross-sectional view of the structure of the pressure relief pipe of the present invention;

[0027] Figure 7 For the present invention Figure 6 An enlarged schematic diagram of the structure of part B is shown;

[0028] Figure 8 It is a schematic cross-sectional view of the structure of the feeding plate of the present invention;

[0029] Fig. 9 For the present invention Figure 8 An enlarged schematic diagram of the C-section structure is shown;

[0030] Fig.10 It is a schematic diagram of the connection structure of the air induced box body of the present invention;

[0031] Fig.11 It is a circuit connection schematic diagram of the induction coil of the present invention.

[0032] In the figure: 1. bottom plate; 2. heating furnace body; 3. overvoltage monitoring sensor; 4. induction coil; 5. feeding plate; 6. pressure relief pipe; 7. water tank; 8. feeding roller; 9. support frame; 10. fan; 11. air duct; 12. gas pipeline; 13. combustion chamber; 14. vibration motor; 15. air chamber; 16. outlet; 17. air outlet; 18. partition; 19. plate valve; 20. induced draft box; 21. fixed box; 22. inclined plate; 23. hinged plate; 24. collecting box; 25. electric sealing plate; 26. pressure valve; 27. heating plate; 28. electromagnetic conversion switch; 29. ​​discharge box; 30. induced draft plate. DETAILED DESCRIPTION

[0033] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0034] like Figures 1 to 11 An aluminum rod heating furnace shown in the figure includes a bottom plate 1 and a heating furnace body 2, a plurality of feeding rollers 8 for feeding are arranged on the outer side of one end of the heating furnace body 2, an induction coil 4 for electromagnetic induction heating of the aluminum rod is arranged inside the end of the heating furnace body 2 close to the feeding roller 8, the induction coil 4 is electrically connected to an overvoltage monitoring sensor 3, a combustion chamber 13 for keeping the aluminum rod warm is arranged at the end of the heating furnace body 2 away from the induction coil 4, a fan 10 for supplying air to the combustion chamber 13 is arranged above one side of the bottom plate 1, a vibration motor 14 for cleaning the aluminum rod is transmission-connected to the bottom of the feeding roller 8, and the air blown out by the fan 10 is also used to clean the induction coil 4 and the aluminum rod.

[0035] In a specific implementation, the induction coil 4 is specifically a medium frequency induction heating coil, which is a prior art and will not be disclosed in detail here.

[0036] As a further implementation scheme of the present invention, the heating furnace body 2 is fixedly connected to the top of the base plate 1, and a heating hole for the aluminum rod to pass through is opened on the heating furnace body 2. One side of the combustion chamber 13 is connected to multiple gas pipes 12, and the gas pipes 12 pass through the side wall of the heating furnace body 2, and the gas pipes 12 are connected to an external gas source. The bottom of the fan 10 is fixedly connected to a pillar, and the pillar is fixedly connected to the top of the base plate 1. The output end of the fan 10 is connected to the air duct 11, and the end of the air duct 11 away from the fan 10 is connected to the combustion chamber 13, and a plate valve 19 is provided at the connection between the two. The connection between the air duct 11 and the combustion chamber 13 is located above the gas pipe 12.

[0037] In a specific implementation, the gas source may be an external natural gas pipeline. An ignition device is provided at one end of the gas pipeline 12 away from the gas source. The ignition device is a prior art and will not be disclosed in detail herein.

[0038] As a further implementation scheme of the present invention, a partition 18 is fixedly connected to one side of the interior of the combustion chamber 13, and the connection point between the air duct 11 and the combustion chamber 13 is located below the partition 18. A wind chamber 15 is opened inside the heating furnace body 2, and the wind chamber 15 is located between the combustion chamber 13 and the induction coil 4. An air outlet 17 is provided between the wind chamber 15 and the combustion chamber 13, and the two are connected through the air outlet 17. The side of the wind chamber 15 away from the air outlet 17 is connected with multiple air holes, and the multiple air holes are facing the direction of the induction coil 4.

[0039] In a specific implementation, the design of the partition 18 and the fan 10 can effectively make the temperature in the combustion chamber 13 tend to be balanced, thereby achieving the purpose of effectively keeping the aluminum rod warm.

[0040] As a further implementation scheme of the present invention, a support frame 9 with a "Y"-shaped cross-section is fixedly connected at the top center of one end of the base plate 1, and a plurality of feeding rollers 8 are rotatably connected to the top side wall panels of the support frame 9. A vibration motor 14 is fixedly connected to an end wall panel of the support frame 9 close to the heating furnace body 2. A feeding plate 5 is fixedly connected to one side of the top of the support frame 9. The feeding plate 5 is used to place the aluminum rod to be heated. A plurality of legs are fixedly connected to the bottom of the feeding plate 5, and the legs are fixedly connected to the base plate 1.

[0041] In a specific implementation, a plurality of feeding rollers 8 are provided on both side wall panels of the top of the support frame 9. By arranging the plurality of feeding rollers 8 in a "V" shape, the movement of the aluminum rod along the heating hole can be effectively controlled.

[0042] As a further implementation scheme of the present invention, a water tank 7 is fixedly connected to the bottom of the loading plate 5, a heating plate 27 is fixedly connected to the inside of the water tank 7, the induction coil 4 and the overvoltage monitoring sensor 3 are connected in series, one end of the overvoltage monitoring sensor 3 away from the induction coil 4 is electrically connected to the AC power supply, one end of the AC power supply away from the overvoltage monitoring sensor 3 is electrically connected to an electromagnetic conversion switch 28, the electromagnetic conversion switch 28 is communicatively connected to the overvoltage monitoring sensor 3, one end of the induction coil 4 away from the overvoltage monitoring sensor 3 is electrically connected to line one and line two, and the electrical connection between line one and line two and the AC power supply is controlled by the electromagnetic conversion switch 28.

[0043] In the specific implementation, the AC power supply is the existing technology and will not be disclosed in detail here. A controller is arranged inside the overvoltage monitoring sensor 3. The overvoltage monitoring sensor 3 monitors the voltage of the induction coil 4. The overvoltage monitoring sensor 3 is provided with a maximum voltage preset value and a minimum voltage preset value. When the overvoltage monitoring sensor 3 detects that the voltage of the induction coil 4 is higher than the maximum voltage preset value, the overvoltage monitoring sensor 3 generates a first request information and sends the first request information to the controller. After obtaining the first request information, the controller generates a first control information and sends the first control information to the electromagnetic conversion switch 28 to control the electromagnetic conversion switch 28 to connect the induction coil 4 with the AC power supply through line 2.

[0044] When the overvoltage monitoring sensor 3 detects that the voltage of the induction coil 4 is lower than the minimum voltage preset value, the overvoltage monitoring sensor 3 generates a second request information and sends the second request information to the controller. After obtaining the second request information, the controller generates a second control information and sends the second control information to the electromagnetic conversion switch 28 to control the electromagnetic conversion switch 28 to connect the induction coil 4 to the AC power supply through line 1.

[0045] As a further embodiment of the present invention, circuit one includes contact one, and contact one is electrically connected to the induction coil 4 away from the overvoltage monitoring sensor 3 through a wire;

[0046] Circuit two includes contact two, the heating plate 27 and the vibration motor 14 are connected in series between contact two and the induction coil 4, contact two, the vibration motor 14, the heating plate 27 and the induction coil 4 are connected in series in sequence, and the electromagnetic conversion switch 28 is provided with a contact, which is used to abut against contact one or contact two.

[0047] In the specific implementation, the connection of the switching contacts of the electromagnetic conversion switch 28 is a prior art and will not be disclosed in detail here.

[0048] As a further implementation scheme of the present invention, a discharge port 16 is provided at the bottom of one end of the heating furnace body 2 near the loading roller 8, and a discharge box body 29 is fixedly connected to the bottom of the discharge port 16, and the top of the discharge box body 29 is communicated with the discharge port 16, and draft boxes 20 are fixedly connected to both sides of the top of the discharge box body 29, and both sides of the top of the discharge box body 29 are respectively communicated with two draft boxes 20, and a rectangular opening is provided on the side of the draft box body 20 near the loading roller 8, and a draft plate 30 with a "U"-shaped cross-section is fixedly connected to the bottom of the rectangular opening, and the end of the draft plate 30 away from the rectangular opening faces the loading roller 8.

[0049] In a specific implementation, by providing the air ducting plate 30 , the aluminum rod on the feeding roller 8 can be effectively cleaned and can also be preheated by hot air.

[0050] As a further implementation scheme of the present invention, a collecting box 24 is fixedly connected to one side of the bottom of the discharging box body 29, and the collecting box 24 is communicated with one side of the bottom of the discharging box body 29. An electric sealing plate 25 is provided at one end of the collecting box 24 away from the discharging box body 29, and a filter is provided at one end of the electric sealing plate 25 close to the discharging box body 29.

[0051] In a specific implementation, the electric sealing plate 25 is adapted to the pressure valve 26 , and when the pressure valve 26 is opened, the electric sealing plate 25 is opened synchronously, and when the pressure valve 26 is closed, the electric sealing plate 25 is closed synchronously. The filter screen is detachably mounted on the collection box 24 .

[0052] As a further implementation scheme of the present invention, a pressure relief pipe 6 is connected to one side of the top of the water tank 7, and a pressure valve 26 is provided at the connection point between the pressure relief pipe 6 and the water tank 7. The end of the pressure relief pipe 6 away from the water tank 7 is connected to a fixed box body 21, and the fixed box body 21 is fixedly connected to the side of the bottom of the discharge box body 29 away from the collecting box 24. The end of the fixed box body 21 away from the pressure relief pipe 6 is connected to the discharge box body 29, and a hinged plate 23 is rotatably installed at the connection point between the two. A fixed shaft is rotatably sleeved on the top of the hinged plate 23, and both ends of the fixed shaft are respectively fixedly connected to the two side wall panels of the discharge box body 29.

[0053] In a specific implementation, the pressure valve 26 is provided with a preset pressure value. When the air pressure in the water tank 7 is higher than the preset pressure value, the pressure valve 26 is opened. On the one hand, it is helpful to prevent the water tank 7 from being damaged due to high pressure. On the other hand, after the pressure valve 26 is opened, the high-pressure gas in the water tank 7 can also be discharged, and the high-pressure gas is used to clean the discharge box 29. The pressure valve 26 is also provided with a minimum pressure value. When the air pressure in the water tank 7 is lower than the minimum pressure value, the pressure valve 26 is closed.

[0054] As a further implementation scheme of the present invention, an inclined plate 22 is fixedly connected to the interior of the fixed box body 21, and a gap is reserved between the bottom of the inclined plate 22 and the inner bottom wall of the fixed box body 21. The fixed box body 21 is inclined downward from the pressure relief pipe 6 to the hinged plate 23.

[0055] In a specific implementation, when the high-pressure gas in the water tank 7 passes through the fixed box body 21 , the high-pressure gas will be blown to the bottom of the discharge box body 29 through the gap under the cover of the inclined plate 22 , thereby effectively blowing the impurities into the collection box 24 .

[0056] Working principle of the present invention:

[0057] When the present invention is in use, the aluminum rod to be heated is first placed on the loading plate 5, and then the aluminum rod closest to the loading roller 8 is placed on the loading roller 8, and the aluminum rod is transported to the heating hole by the loading roller 8, and the induction coil 4 is energized to enable the induction coil 4 to effectively heat the aluminum rod. As the loading roller 8 continues to transport the aluminum rod, the aluminum rod located inside the heating furnace body 2 will be pushed to the end of the heating furnace body 2 away from the loading roller 8. In this process, gas is transported into the combustion chamber 13 through the gas pipeline 12 and ignited to increase the temperature of the combustion chamber 13, thereby achieving the purpose of keeping the aluminum rod heated by the induction coil 4 warm, which is beneficial to avoid the situation where the aluminum rod cannot be extruded into a shape in subsequent extrusion work due to the decrease in temperature after shearing.

[0058] It should be noted that, during the above heating process, the circuit connection of the induction coil 4 is line one, that is, the AC power supply directly supplies power to the induction coil 4 .

[0059] During the combustion process, the gas in the combustion chamber 13 consumes oxygen. By turning on the fan 10 and continuously delivering air to the combustion chamber 13, sufficient oxygen can be provided for the combustion of the gas. As the gas burns, the oxygen in the air is consumed. During the combustion process, the temperature of the remaining gas increases. As the fan 10 continues to work, the remaining gas is squeezed into the air chamber 15 through the air outlet 17. After the heated air enters the air chamber 15, it is discharged through the air hole and then blown around the induction coil 4. On the one hand, the dust falling on the surface of the induction coil 4 can be blown off, which is conducive to avoiding the damage of the surface of the induction coil 4 due to the presence of impurities or aluminum chips on its surface. On the other hand, part of the gas blown on the induction coil 4 will also be blown on the aluminum rod under the shielding of the induction coil 4, which is conducive to blowing off the dust or impurities on the surface of the aluminum rod, which is conducive to avoiding the presence of impurities on the surface of the aluminum rod affecting the heat conduction of the aluminum rod, thereby reducing the heating efficiency of the aluminum rod. At the same time, the heated gas blown on the aluminum rod can also help maintain the dryness of the aluminum rod.

[0060] As the airflow is output, the gas blown on the induction coil 4 will leave through the impurity outlet 16. Under the flow of the airflow, the impurities will be blown into the impurity outlet 16. Then, under the action of gravity and inertia, the impurities will fall to the bottom of the discharge box 29 and gather at the bottom of the discharge box 29, while the airflow will flow out through the induced draft box 20. Finally, under the action of the induced draft plate 30, the heated gas is blown onto the feeding roller 8, and then blown onto the surface of the aluminum rod through the space between the feeding rollers 8. On the one hand, the dust and impurities on the surface of the aluminum rod can be blown off before the aluminum rod enters the heating furnace body 2. On the other hand, the surface of the aluminum rod can be preheated by the heated gas, which is beneficial to improving the heating efficiency of the aluminum rod.

[0061] In the process of using the induction coil 4 to heat the aluminum rod, the resistance inside the heating element will gradually increase, resulting in a smaller current and larger inductance, thus forming a sponge effect. This effect will cause the heating voltage to increase. If it exceeds the voltage range of the equipment, overvoltage will occur, and overvoltage will easily affect the normal operation of the equipment. Through the setting of the overvoltage monitoring sensor 3, the voltage of the induction coil 4 can be effectively monitored. When the voltage is too high, when the voltage is higher than the maximum voltage preset value of the overvoltage monitoring sensor 3, the overvoltage monitoring sensor 3 will control the electromagnetic conversion switch 28 to switch the connection of the circuit. The contact of the electromagnetic conversion switch 28 will change from abutting against contact one to abutting against contact two, thereby connecting the vibration motor 14 and the heating plate 27 in series into the circuit. On the one hand, it can effectively reduce the voltage of the induction coil 4, which is conducive to avoiding the situation where the induction coil 4 is over-voltage and the operation of the equipment is affected. On the other hand, it can also make the vibration motor 14 and the heating plate 27 work effectively.

[0062] After being started, the vibration motor 14 will cause the feeding roller 8 to vibrate through the support frame 9, thereby driving the aluminum rod on the feeding roller 8 to vibrate, which is beneficial to shake off the impurities attached to the surface of the feeding roller 8, and further ensure the cleanliness of the surface of the aluminum rod. After being turned on, the heating plate 27 will effectively heat the water in the water tank 7. After the water in the water tank 7 is heated, the temperature of the feeding plate 5 will rise, and the aluminum rod placed on the top of the feeding plate 5 will be further preheated, which is beneficial to avoid the situation where the aluminum rod is not heated sufficiently due to insufficient voltage of the induction coil 4 after the over-voltage protection of the induction coil 4. By utilizing the effective preheating of the aluminum rod, the heating efficiency of the aluminum rod can be effectively improved.

[0063] As the heating plate 27 works, the water in the water tank 7 will evaporate, thereby increasing the air pressure in the water tank 7. When the air pressure increases to the preset pressure value of the pressure valve 26, the pressure valve 26 opens, allowing the high-pressure gas in the water tank 7 to be discharged into the pressure relief pipe 6, and then enters the fixed box body 21 through the pressure relief pipe 6. Then, through the shielding of the inclined plate 22 in the fixed box body 21, the high-pressure gas can be blown onto the hinged plate 23. After being blown by the high-pressure gas, the hinged plate 23 will rotate upward and then lie horizontally in the discharge box body 29. The high-pressure gas will blow the impurities in the discharge box body 29 into the collection box 24. It should be noted that when the pressure valve 26 is opened, the electric sealing plate 25 will also open, and the impurities will be blown into the collection box 24 by the high-pressure gas, and at the same time blocked by the filter. After the impurities in the collection box 24 are collected to a certain extent, they can be cleaned by removing the filter.

[0064] When the overvoltage monitoring sensor 3 detects that the voltage of the induction coil 4 is lower than the minimum voltage preset value, the overvoltage monitoring sensor 3 will control the electromagnetic conversion switch 28 to abut the contact with contact one, thereby electrically connecting the AC power supply and the induction coil 4 through line one, so that the induction coil 4 continues to work effectively. Through the setting of the overvoltage monitoring sensor 3, it can be effectively ensured that the induction coil 4 can continue to work effectively, which is conducive to avoiding the induction coil 4 from being damaged due to long-term work.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. An aluminum rod heating furnace, comprising a bottom plate (1) and a heating furnace body (2), characterized in that: A plurality of feeding rollers (8) for feeding are arranged on the outside of one end of the heating furnace body (2); an induction coil (4) for electromagnetic induction heating of the aluminum rod is arranged inside the end of the heating furnace body (2) close to the feeding roller (8); the induction coil (4) is electrically connected to an overvoltage monitoring sensor (3); a combustion chamber (13) for keeping the aluminum rod warm is arranged inside the heating furnace body (2) at the end away from the induction coil (4); a fan (10) for supplying air to the combustion chamber (13) is arranged above one side of the bottom plate (1); a vibration motor (14) for cleaning the aluminum rod is transmission-connected to the bottom of the feeding roller (8); and air blown out by the fan (10) is also used to clean the induction coil (4) and the aluminum rod; The heating furnace body (2) is fixedly connected to the top of the bottom plate (1), a heating hole for the aluminum rod to pass through is opened on the heating furnace body (2), one side of the combustion chamber (13) is connected to a plurality of gas pipelines (12), the gas pipelines (12) penetrate the side wall of the heating furnace body (2), and the gas pipelines (12) are connected to an external gas source, the bottom of the fan (10) is fixedly connected to a support, the support is fixedly connected to the top of the bottom plate (1), the output end of the fan (10) is connected to an air duct (11), the end of the air duct (11) away from the fan (10) is connected to the combustion chamber (13), and a plate valve (19) is provided at the connection between the two, and the connection between the air duct (11) and the combustion chamber (13) is located above the gas pipeline (12); A partition (18) is fixedly connected to one side of the combustion chamber (13); the connection point between the air duct (11) and the combustion chamber (13) is located below the partition (18); an air chamber (15) is provided inside the heating furnace body (2); the air chamber (15) is located between the combustion chamber (13) and the induction coil (4); an air outlet (17) is provided between the air chamber (15) and the combustion chamber (13); the two are connected via the air outlet (17); a side of the air chamber (15) away from the air outlet (17) is connected to a plurality of air holes, and the plurality of air holes face the direction of the induction coil (4); A support frame (9) having a "Y"-shaped cross section is fixedly connected at the center of the top of one end of the bottom plate (1); a plurality of feeding rollers (8) are rotatably connected to the side wall panels on the top of the support frame (9); a vibration motor (14) is fixedly connected to the side wall panel of the support frame (9) close to the heating furnace body (2); a feeding plate (5) is fixedly connected to one side of the top of the support frame (9); the feeding plate (5) is used to place the aluminum rod to be heated; a plurality of legs are fixedly connected to the bottom of the feeding plate (5); and the legs are fixedly connected to the bottom of the bottom plate (1); The bottom of the feeding plate (5) is fixedly connected to a water tank (7), the interior of the water tank (7) is fixedly connected to a heating plate (27), the induction coil (4) and the overvoltage monitoring sensor (3) are connected in series, one end of the overvoltage monitoring sensor (3) away from the induction coil (4) is electrically connected to an AC power supply, one end of the AC power supply away from the overvoltage monitoring sensor (3) is electrically connected to an electromagnetic conversion switch (28), the electromagnetic conversion switch (28) is communicatively connected to the overvoltage monitoring sensor (3), one end of the induction coil (4) away from the overvoltage monitoring sensor (3) is electrically connected to line one and line two, and the electrical connection between line one and line two and the AC power supply is controlled by the electromagnetic conversion switch (28); The circuit 1 comprises a contact 1, and the contact 1 is electrically connected to an end of the induction coil (4) away from the overvoltage monitoring sensor (3) via a wire; The circuit 2 comprises a contact 2, a heating plate (27) and a vibration motor (14) connected in series between the contact 2 and the induction coil (4), the contact 2, the vibration motor (14), the heating plate (27) and the induction coil (4) connected in series in sequence, and the electromagnetic conversion switch (28) is provided with a contact, the contact being used to abut against the contact 1 or the contact 2.

2. The aluminum rod heating furnace according to claim 1, characterized in that: A discharge port (16) is provided at the bottom of one end of the heating furnace body (2) near the feeding roller (8), a discharge box body (29) is fixedly connected to the bottom of the discharge port (16), the top of the discharge box body (29) is in communication with the discharge port (16), both sides of the top of the discharge box body (29) are fixedly connected to induced draft boxes (20), and both sides of the top of the discharge box body (29) are respectively in communication with two induced draft boxes (20), a rectangular opening is provided on one side of the induced draft box body (20) near the feeding roller (8), an induced draft plate (30) with a "U"-shaped cross section is fixedly connected to the bottom of the rectangular opening, and the end of the induced draft plate (30) away from the rectangular opening faces the feeding roller (8).

3. The aluminum rod heating furnace according to claim 2, characterized in that: A collecting box (24) is fixedly connected to one side of the bottom of the discharge box body (29); the collecting box (24) is in communication with one side of the bottom of the discharge box body (29); an electric sealing plate (25) is provided at one end of the collecting box (24) away from the discharge box body (29); and a filter screen is provided at one end of the electric sealing plate (25) close to the discharge box body (29).

4. The aluminum rod heating furnace according to claim 3, characterized in that: A pressure relief pipe (6) is connected to one side of the top of the water tank (7), and a pressure valve (26) is provided at the connection point between the pressure relief pipe (6) and the water tank (7). One end of the pressure relief pipe (6) away from the water tank (7) is connected to a fixed box body (21), and the fixed box body (21) is fixedly connected to a side of the bottom of the discharge box body (29) away from the collecting box (24). One end of the fixed box body (21) away from the pressure relief pipe (6) is connected to the discharge box body (29), and a hinge plate (23) is rotatably installed at the connection point between the two. A fixed shaft is rotatably sleeved on the top of the hinge plate (23), and both ends of the fixed shaft are respectively fixedly connected to the side wall panels of the discharge box body (29).

5. The aluminum rod heating furnace according to claim 4, characterized in that: The interior of the fixed box body (21) is fixedly connected with an inclined plate (22), a gap is reserved between the bottom of the inclined plate (22) and the inner bottom wall of the fixed box body (21), and the fixed box body (21) is inclined downward from the pressure relief pipe (6) to the hinged plate (23).

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