Discharge mechanism for electric heating furnace

Abstract

The utility model relates to electric heating furnace technical field discloses a kind of discharging mechanism for electric heating furnace, including support frame, drive mechanism, conveyer belt and infrared thermometer, support frame is made of high-temperature-resistant alloy steel, the shock-absorbing foot pad is installed in support frame bottom;Drive mechanism includes servo motor, the reducer connected with the output end of servo motor, several rotating rollers driven by reducer, several rotating rollers surface are coated with high friction coefficient rubber layer;Conveyer belt is driven to run by rotating roller, support frame is made of high-temperature-resistant alloy steel, and the shock-absorbing foot pad of high-temperature-resistant silicon rubber material is installed in bottom, it is equipped with disc spring array inside, can adapt to high-temperature environment and absorb vibration, prolong equipment service life.Multiple layers of heat insulation board are embedded with electric heating wire, and electric heating wire is embedded between aerogel thermal insulation layer and silicon carbide ceramic plate in serpentine arrangement mode, which helps to improve heating efficiency and ensure the uniformity of heating.

Description

Technical Field

[0001] This utility model relates to the field of electric heating furnace technology, specifically to a material discharge mechanism for an electric heating furnace. Background Technology

[0002] In industrial production, electric heating furnaces are widely used for heating various materials. Traditional electric heating furnace discharge mechanisms typically include a basic support frame, drive mechanism, conveyor belt, and temperature detection equipment. However, these traditional designs have several shortcomings, such as poor equipment stability, low heating efficiency, uneven heating, suboptimal material handling, and low operational flexibility and control precision.

[0003] Specifically, traditional support frames mostly use ordinary steel, which cannot withstand long-term use in high-temperature environments and lacks vibration damping measures, making the equipment prone to damage due to thermal expansion and vibration. The drive mechanism often uses simple motors and transmission belts, without considering the impact of high-temperature environments on the equipment, resulting in low drive efficiency and short lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a discharge mechanism for an electric heating furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a discharge mechanism for an electric heating furnace, comprising a support frame, a drive mechanism, a conveyor belt, and an infrared thermometer. The support frame is made of high-temperature resistant alloy steel, and shock-absorbing pads are installed at the bottom of the support frame. The drive mechanism includes a servo motor, a reducer connected to the output end of the servo motor, and several rotating rollers driven by the reducer. The surfaces of the rotating rollers are covered with a high-friction coefficient rubber layer. The conveyor belt is driven by the rotating rollers, and a multi-layer heat insulation plate is provided below the conveyor belt. Electric heating wires are embedded inside the multi-layer heat insulation plate. The infrared thermometer is located above the conveyor belt, and a PLC controller is connected to the infrared thermometer signal. The PLC controller, the electric heating wire, and the servo motor form a closed-loop control circuit.

[0006] Preferably, the shock-absorbing foot pad is made of high-temperature resistant silicone rubber and has an array of disc springs inside, the working temperature range of which is -20℃ to 400℃.

[0007] Preferably, the conveyor belt is a high-temperature resistant ceramic conveyor belt with a silicon carbide coating on its surface.

[0008] Preferably, the multi-layer heat insulation board comprises, from bottom to top:

[0009] Alumina fiberboard, thickness 5-8mm;

[0010] Aerogel insulation layer, with a thickness of 3-5mm;

[0011] Silicon carbide ceramic plate, with a thickness of 2-3mm;

[0012] The electric heating wire is embedded in a serpentine arrangement between the aerogel insulation layer and the silicon carbide ceramic plate.

[0013] Preferably, the operating logic of the closed-loop control loop includes:

[0014] When the infrared thermometer detects that the material surface temperature is lower than the set threshold, the PLC controller executes synchronously:

[0015] Increase the output power of the electric heating wire by 10%-15% of the current power value;

[0016] Reduce the servo motor speed by 5%-8% of the current speed value.

[0017] Preferably, the arrangement density of the electric heating wires is gradient-distributed along the conveying direction, with the wire spacing at the feed end of the conveyor belt being 8-10 mm and the wire spacing at the discharge end of the conveyor belt increasing to 12-15 mm.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. Improved equipment stability and durability: The support frame is made of high-temperature resistant alloy steel and is equipped with high-temperature resistant silicone rubber shock-absorbing pads at the bottom. It also has an internal disc spring array, which can adapt to high-temperature environments and absorb vibrations, extending the service life of the equipment.

[0020] 2. Improved heating efficiency and uniformity: The multi-layer insulation board is embedded with electric heating wires, which are arranged in a serpentine pattern between the aerogel insulation layer and the silicon carbide ceramic plate. This helps to improve heating efficiency and ensure heating uniformity.

[0021] 3. Optimized material handling process: The high-temperature resistant ceramic conveyor belt with silicon carbide coating can withstand high temperatures and reduce material adhesion. At the same time, the infrared thermometer and PLC controller form a closed-loop control circuit, which can automatically adjust the power of the electric heating wire and the speed of the servo motor according to the material temperature, ensuring that the material reaches the ideal temperature before discharge.

[0022] 4. Improved operational flexibility and control precision: The arrangement density of the electric heating wires is gradient-distributed along the conveying direction, making the heating more in line with the actual heating needs of the material, and further improving the control precision and flexibility of the heating process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 2 This is a side view of the structure of this utility model;

[0025] Figure 3 This is a top view of the structure of this utility model;

[0026] Figure 4 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0027] In the diagram: 1. Support frame; 2. Shock-absorbing foot pads; 3. Servo motor; 4. Reducer; 5. Rotating roller; 6. Conveyor belt; 7. Multi-layer heat insulation board; 8. Infrared thermometer; 9. PLC controller; 10. Electric heating wire; 11. Disc spring array; 7-1. Alumina fiberboard; 7-2. Aerogel insulation layer; 7-3. Silicon carbide ceramic plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-4 This utility model provides a technical solution: a discharge mechanism for an electric heating furnace, which is ingeniously designed and fully functional, effectively improving production efficiency and product quality. The discharge mechanism mainly includes a support frame 1, a drive mechanism, a conveyor belt 6, and an infrared thermometer 8, among other key components. The support frame 1 is meticulously crafted from high-temperature resistant alloy steel, possessing extremely high stability and heat resistance, ensuring reliable operation of the entire mechanism in high-temperature environments. Shock-absorbing pads 2 are specially installed at the bottom of the support frame 1, which not only absorb vibrations generated during equipment operation but also effectively prevent heat from being transferred to the ground through the support structure, thereby protecting the ground from damage.

[0030] The drive mechanism is the core of the entire discharge mechanism. It includes a servo motor 3, a reducer 4 connected to the output of the servo motor 3, and several rotating rollers 5 driven by the reducer 4. The servo motor 3 provides precise speed control, ensuring the smooth operation of the conveyor belt 6. The reducer 4 reduces the output speed of the servo motor 3 while increasing the output torque to drive the rotating rollers 5. The surface of the rotating rollers 5 is covered with a high-friction rubber layer, which not only increases the friction between the rollers and the conveyor belt 6, ensuring the stability of the material during conveying, but also reduces potential damage to the material surface.

[0031] The conveyor belt 6 is the main carrier for material transport, and it is driven by the rotating rollers 5. To further improve thermal efficiency and protect the environment, multiple layers of heat insulation plates 7 are installed under the conveyor belt 6. These heat insulation plates 7 not only effectively insulate heat and reduce heat loss, but also prevent heat from affecting the equipment below or the environment. Electric heating wires 10 are embedded inside the multiple layers of heat insulation plates 7. These heating wires provide uniform heat to the conveyor belt 6, ensuring that the material is properly heated during transport.

[0032] To monitor the material temperature in real time, an infrared thermometer 8 is installed above the conveyor belt 6. The infrared thermometer 8 can measure the surface temperature of the material non-contactly, and its measurement results are connected to the PLC controller 9 via signal lines. The PLC controller 9 is a programmable logic controller that automatically adjusts the power output of the electric heating wire 10 based on the temperature data provided by the infrared thermometer 8, thereby achieving precise control of the material temperature. Simultaneously, the PLC controller 9 forms a closed-loop control circuit with the servo motor 3, further optimizing the material discharge speed and temperature control by controlling the operating speed of the servo motor 3, ensuring the efficiency and stability of the entire discharge process.

[0033] Specifically, the shock-absorbing foot pad 2 is designed with high-temperature resistant silicone rubber, which can withstand extreme temperature conditions, ensuring the stability of the foot pad in high-temperature environments. Its internal structure features a specially designed disc spring array 11. These disc springs not only provide effective shock absorption, but also have a very wide operating temperature range, functioning normally from -20 degrees Celsius to 400 degrees Celsius. This broad temperature adaptability makes the shock-absorbing foot pad 2 ideal for various industrial applications, providing reliable shock absorption support in both cold outdoor environments and high-temperature industrial production lines.

[0034] Specifically, the conveyor belt 6 is a high-temperature resistant ceramic conveyor belt with a silicon carbide coating on its surface. This type of conveyor belt not only has extremely high heat resistance, but its silicon carbide coating also gives it excellent wear resistance and corrosion resistance.

[0035] Specifically, the multi-layer insulation panel 7 comprises, from bottom to top:

[0036] First, the alumina fiberboard 7-1, with a thickness of 5-8 mm, serves as the base layer, providing initial thermal insulation protection for the entire insulation board;

[0037] Next, the aerogel insulation layer 7-2, with a thickness of 3-5 mm, is placed on top of the alumina fiberboard to further enhance the insulation effect. Its lightweight and efficient insulation performance is the key to the entire insulation board.

[0038] Then there is the silicon carbide ceramic plate 7-3, which is 2-3 mm thick. It sits on top of the aerogel insulation layer and provides additional structural strength and high temperature resistance to the insulation board.

[0039] Between these layers, in particular, the electric heating wires 10 are embedded in a serpentine arrangement, connecting the aerogel insulation layer 7-2 and the silicon carbide ceramic plate 7-3, to ensure uniform heating while providing the necessary heat to maintain specific temperature conditions.

[0040] Specifically, the working logic of the closed-loop control loop involves a series of precise steps to ensure the efficient and accurate operation of the entire system:

[0041] When the infrared thermometer 8 detects that the surface temperature of the material is lower than the set threshold, the PLC controller 9 will immediately respond and perform the following operations synchronously:

[0042] First, the PLC controller 9 instructs the electric heating wire 10 to increase its output power to raise the temperature of the material. The power increase is based on 10%-15% of the current power value, which ensures that the temperature increase is effective without being excessive, thereby preventing the material from being damaged by overheating.

[0043] Secondly, the PLC controller 9 will also adjust the speed of the servo motor 3 to reduce it. The speed reduction is based on 5%-8% of the current speed value. This adjustment helps to reduce the speed of the material during the conveying process, thereby giving the electric heating wire 10 more time to heat the material and ensuring that the material temperature can be raised to the required level evenly and effectively.

[0044] To further optimize the heating process, the arrangement density of the electric heating wires 10 along the conveying direction is carefully designed, exhibiting a gradient distribution. At the feed end of the conveyor belt 6, the spacing between the electric heating wires 10 is set to 8-10 mm. This dense arrangement ensures that the material receives sufficient heat in the initial stage. As the material moves towards the discharge end, the spacing between the electric heating wires 10 gradually increases to 12-15 mm. This design adapts to the gradual increase in material temperature, avoiding overheating as the material approaches the discharge end, while ensuring both heating efficiency and material quality.

[0045] Working principle: When this utility model is working, the support frame 1 is made of high temperature resistant alloy steel and is equipped with shock-absorbing pads 2. The shock-absorbing pads 2 are made of high temperature resistant silicone rubber and contain a disc spring array 11 to withstand high temperature and provide shock absorption function.

[0046] The drive mechanism includes a servo motor 3, a reducer 4, and a rotating roller 5. The servo motor 3 drives the rotating roller 5 through the reducer 4. The surface of the rotating roller 5 is covered with a high-friction coefficient rubber layer to ensure the stable operation of the conveyor belt 6.

[0047] The conveyor belt 6 is made of a high-temperature resistant ceramic conveyor belt with a silicon carbide coating and is driven by rotating rollers 5. Multiple layers of heat insulation plates 7 are installed under the conveyor belt to reduce heat loss and protect the support frame 1.

[0048] The multi-layer heat insulation board 7 is composed of an alumina fiber board 7-1, an aerogel heat insulation layer 7-2, and a silicon carbide ceramic board 7-3. The electric heating wire 10 is embedded between the aerogel heat insulation layer 7-2 and the silicon carbide ceramic board 7-3 in a serpentine arrangement to provide uniform heating.

[0049] An infrared thermometer 8 is installed above the conveyor belt 6 to monitor the surface temperature of the material in real time.

[0050] The PLC controller 9 receives signals from the infrared thermometer 8 and forms a closed-loop control circuit with the electric heating wire 10 and the servo motor 3. When the material surface temperature is detected to be lower than the set threshold, the PLC controller 9 will synchronously perform the following operations:

[0051] Increase the output power of the electric heating wire 10 by 10%-15% of the current power value;

[0052] Reduce the speed of servo motor 3 by 5%-8% of the current speed value.

[0053] The electric heating wires 10 are arranged in a gradient density along the conveying direction to adapt to the different heating requirements of the material during the heating process. The wire spacing at the feed end is denser to provide more heat, while the wire spacing at the discharge end is sparser to reduce heat output and ensure that the material reaches an appropriate temperature at the discharge end.

[0054] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0055] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A discharge mechanism for an electric heating furnace, characterized in that, include: The support frame (1) is made of high temperature resistant alloy steel, and the bottom of the support frame (1) is equipped with shock-absorbing pads (2). The driving mechanism includes a servo motor (3), a reducer (4) connected to the output end of the servo motor (3), and a plurality of rotating rollers (5) driven by the reducer (4), the surfaces of the plurality of rotating rollers (5) being covered with a rubber layer with a high coefficient of friction. A conveyor belt (6) is driven by a rotating roller (5). A multi-layer heat insulation plate (7) is provided below the conveyor belt (6), and an electric heating wire (10) is embedded inside the multi-layer heat insulation plate (7). An infrared thermometer (8) is set above the conveyor belt (6), and a PLC controller (9) is connected to the infrared thermometer (8) via signal. The PLC controller (9) forms a closed-loop control circuit with the electric heating wire (10) and the servo motor (3).

2. The discharge mechanism for an electric heating furnace according to claim 1, characterized in that: The shock-absorbing foot pad (2) is made of high-temperature resistant silicone rubber and has a disc spring array (11) inside. The working temperature range of the disc spring is -20℃ to 400℃.

3. The discharge mechanism for an electric heating furnace according to claim 1, characterized in that: The conveyor belt (6) is a high-temperature resistant ceramic conveyor belt with a silicon carbide coating on its surface.

4. The discharge mechanism for an electric heating furnace according to claim 1, characterized in that: The multi-layer heat insulation board (7) comprises, from bottom to top: Alumina fiberboard (7-1), thickness 5-8mm; Aerogel insulation layer (7-2), with a thickness of 3-5mm; Silicon carbide ceramic plate (7-3), thickness 2-3mm; The electric heating wire (10) is embedded in a serpentine arrangement between the aerogel insulation layer (7-2) and the silicon carbide ceramic plate (7-3).

5. The discharge mechanism for an electric heating furnace according to claim 1, characterized in that: The working logic of the closed-loop control circuit includes: When the infrared thermometer (8) detects that the surface temperature of the material is lower than the set threshold, the PLC controller (9) executes synchronously: Increase the output power of the electric heating wire (10) by 10%-15% of the current power value; Reduce the speed of the servo motor (3) by 5%-8% of the current speed value.

6. The discharge mechanism for an electric heating furnace according to claim 5, characterized in that: The arrangement density of the electric heating wire (10) is distributed in a gradient along the conveying direction. The line spacing at the feed end of the conveyor belt (6) is 8-10 mm, and the line spacing at the discharge end of the conveyor belt (6) is increased to 12-15 mm.

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