Demoulding waste heat recovery device for basin-type insulator tunnel furnace

Abstract

The invention relates to the technical field of industrial tunnel furnace waste heat recovery equipment, in particular to a basin-type insulator tunnel furnace demolding waste heat recovery device which comprises a tunnel furnace demolding waste heat recovery device body, a conveying mechanism, an air circulation mechanism, a terminal controller, a sealing pneumatic door, a heating tray and a connecting table. The tunnel furnace demolding waste heat recovery device body and the outlet end of the tunnel furnace are connected with a connecting table, and a conveying mechanism is arranged in the tunnel furnace demolding waste heat recovery device body. The port of the tunnel furnace is externally connected with the double-layer gradient heat preservation cavity and the automatic conveying system, the heat preservation uniformity problem is effectively solved, the heat preservation section is of an upper-lower-layer independent temperature control structure, accurate temperature control is achieved, and the heat preservation efficiency is improved. The micropore air supply design of the gap between the top air duct and the bottom roll shaft ensures that the convex surface and the concave surface of the die receive uniform hot air flow at the same time, and the local stress concentration phenomenon is effectively reduced.

Description

Technical Field

[0001] This invention relates to the technical field of waste heat recovery equipment for industrial tunnel furnaces, and more particularly to a waste heat recovery device for demolding a basin-type insulator tunnel furnace. Background Technology

[0002] The pot-type insulator tunnel furnace is a continuous baking equipment specifically designed for the production of power insulators. Its background technology originates from the development of components and accessories of general industrial furnaces. This equipment inherits the heating element layout and temperature control system of box furnaces, draws on the sealed through structure and material conveying mechanism of tunnel kilns, and integrates the hot air circulation technology of drying furnaces and the heat insulation design of distillation furnaces, so as to achieve efficient and uniform curing and sintering of insulator blanks in a closed environment.

[0003] Existing pot-type insulator tunnel furnaces have a prominent problem of insufficient heat preservation uniformity during the demolding and heat preservation process. The single heat source heating method causes a significant temperature difference between the convex and concave surfaces of the mold during the heat preservation process. This temperature difference not only causes uneven stress distribution on the surface and inside of the insulator, but may also cause local stress concentration, increasing the risk of cracking. The existing oven design does not fully consider the stress release requirements of the mold during the transportation process. The slow cooling stage after epoxy resin curing cannot fully release internal stress, further affecting the overall performance of the insulator. In addition, the manual intervention in the heat preservation process increases the uncertainty of operation and the consistency difference between batches.

[0004] To address the aforementioned issues, this invention effectively solves the problem of heat preservation uniformity by connecting a double-layer gradient insulation cavity and an automated conveying system to the port of the tunnel furnace. The insulation section adopts an independent temperature control structure for the upper and lower layers, with multiple temperature detection points configured in each temperature zone to achieve precise temperature control. The micro-perforated air supply design between the top air duct and the bottom roller shaft ensures that the convex and concave surfaces of the mold receive uniform hot airflow simultaneously, eliminating thermal stress. The reduced speed of the double-speed chain and the micro-rotation design of the spiral guide groove roller shaft promote the uniform release of internal stress in the epoxy resin. The linkage between the fiber optic stress sensor and the PLC control system enables real-time monitoring of the strain rate and automatic adjustment of the cooling rate, improving the automation level of the production process and batch consistency, effectively reducing local stress concentration, lowering the risk of cracking, and improving the mechanical strength and insulation performance of the insulator. Summary of the Invention

[0005] To overcome the prominent problem of insufficient heat preservation uniformity in the existing pot-type insulator tunnel furnace during the demolding and heat preservation process, the single heat source heating method causes a significant temperature difference between the convex and concave surfaces of the mold during the heat preservation process. This temperature difference not only causes uneven stress distribution on the surface and inside of the insulator, but may also cause local stress concentration, increasing the risk of cracking. The existing oven design does not fully consider the stress release requirements of the mold during the transportation process. The slow cooling stage after epoxy resin curing cannot fully release the internal stress, further affecting the overall performance of the insulator. In addition, the manual intervention in the heat preservation process increases the uncertainty of operation and the problem of batch-to-batch consistency differences.

[0006] The technical solution of the present invention is as follows: a waste heat recovery device for demolding in a basin-type insulator tunnel furnace, comprising a main body of the tunnel furnace waste heat recovery device, a transmission mechanism, an air circulation mechanism, a terminal controller, a sealed pneumatic door, a heating tray, and a connecting platform. The main body of the tunnel furnace waste heat recovery device is connected to the outlet end of the tunnel furnace via a connecting platform. A transmission mechanism is provided inside the main body of the tunnel furnace waste heat recovery device, and an air circulation mechanism is provided on the outside of the main body of the tunnel furnace waste heat recovery device. The air circulation mechanism is used to retain and recover the heat carried by the demolded insulators produced by the tunnel furnace. A terminal controller is provided on one side of the main body of the tunnel furnace waste heat recovery device. Sealed pneumatic doors are provided on both sides of the heat preservation section inside the main body of the tunnel furnace waste heat recovery device. A heating tray is provided on the surface of the transmission mechanism. A connecting platform is provided at one end of the main body of the tunnel furnace waste heat recovery device near the tunnel furnace.

[0007] The main body of the tunnel furnace demolding waste heat recovery device is connected to the outlet end of the tunnel furnace via a connecting platform. The demolded insulators are transported via a transmission mechanism. A dual-circulation air duct is formed via an air circulation mechanism to provide dual-circulation air supply to the insulation section, achieving uniform heating on both sides of the mold. The entire equipment is controlled by a terminal controller. The interior of the main body of the tunnel furnace demolding waste heat recovery device is sealed by a sealing pneumatic door to form a closed cavity. The demolded insulators are supported by a heating tray.

[0008] The conveying mechanism has a bottom roller inside, and multiple sets of micro-holes are provided in the gap of the bottom roller. The micro-holes are located on the bottom surface of the contact surface of the heating tray. An air inlet fan is provided below the conveying mechanism. The air outlet of the air inlet fan is connected to the micro-holes in the gap of the bottom roller. In use, the air inlet fan supplies air to the micro-holes in the gap of the bottom roller, and the air is delivered through the bottom roller to evenly heat the bottom surface of the mold.

[0009] The cavity sidewalls of the main body of the tunnel furnace demolding waste heat recovery device are made of thick aluminum silicate rock wool.

[0010] The outer side of the sealed pneumatic door is equipped with a double-layer high-temperature silicone sealing strip.

[0011] The bottom of the heating tray is embedded with a thick thermally conductive aluminum plate, which is 3mm thick.

[0012] The transmission mechanism includes:

[0013] A11: Flexible double-speed chain conveyor unit, including double-speed chain, variable frequency speed control motor and tensioning device, used to flexibly adjust the mold conveying speed through speed control; A12: Roller spiral guide conveying unit, including spiral guide groove roller, bearing support seat and transmission gear set, used to promote uniform release of internal stress of epoxy resin through slight rotation of the tray; A13: Position detection and positioning unit, including proximity switch, encoder and positioning cylinder, used to achieve precise positioning of mold in the heat preservation section through position feedback.

[0014] The air circulation mechanism includes: A21: Top forced air circulation unit, including a circulating fan, air duct heater and air volume regulating valve, is used to force convection heating of the mold's convex surface to maintain surface temperature uniformity; A22: Bottom micro-perforated air supply unit, including micro-perforated air supply plate, air supply duct and pressure regulating valve, used to supply air through micro-perforations in the roller gap to eliminate the concave surface "thermal dead zone"; A23: Waste heat recovery and circulation unit, including heat exchanger, exhaust gas pipe and fresh air inlet pipe, is used to recover waste heat from the front heating zone as part of the heat source for the insulation section.

[0015] The terminal controller includes: A31: PLC main control unit, including PLC controller, touch screen and communication module, used to execute preset heat preservation program and control the power of heating tubes in each temperature zone; A32: Temperature control unit, including temperature sensor, solid-state relay and cooling fan, used to achieve precise temperature control of each temperature zone within the insulation section; A33: Stress monitoring and adjustment unit, including fiber optic stress sensor, signal conditioning circuit and emergency adjustment module, used to monitor the surface strain of insulator in real time and dynamically adjust the cooling rate.

[0016] The connection station includes: A41: Data interface unit, including Ethernet interface, serial communication interface and data conversion module, used to support high-speed data transmission and protocol conversion between devices; A42: Material transfer interface unit, including conveyor belt connection device, positioning pins and holes, and quick-change fixture, used to realize the automatic transfer of molds between tunnel furnace and insulation device; A43: Power and gas supply interface unit, including power socket and switch, gas supply connector and filter and emergency stop button, is used to provide the electrical energy and gas supply required for equipment operation to ensure safety and stability.

[0017] The pot-type insulator tunnel furnace is equipped with the aforementioned pot-type insulator tunnel furnace demolding waste heat recovery device.

[0018] The beneficial effects of this invention are: 1. Existing pot-type insulator tunnel furnaces suffer from insufficient heat uniformity during demolding and heat preservation. The single heat source heating method leads to a significant temperature difference between the convex and concave surfaces of the mold during heat preservation. This temperature difference not only causes uneven stress distribution on the surface and inside the insulator but may also cause localized stress concentration, increasing the risk of cracking. Existing oven designs fail to adequately consider the stress release requirements of the mold during transport. The slow cooling stage after epoxy resin curing cannot fully release internal stress, further affecting the overall performance of the insulator. Furthermore, manual intervention in the heat preservation process increases operational uncertainty and batch-to-batch consistency differences. This invention effectively solves the heat uniformity problem by connecting a double-layer gradient heat preservation cavity and an automated conveying system to the port of the tunnel furnace. The heat preservation section adopts an independent temperature control structure for the upper and lower layers, with each temperature zone configured with… Multiple temperature detection points enable precise temperature control. The micro-hole air supply design between the top air duct and the bottom roller ensures that both the convex and concave surfaces of the mold receive uniform hot airflow simultaneously, eliminating thermal stress. The reduced speed of the double-speed chain and the micro-rotation design of the spiral guide roller promote the uniform release of internal stress in the epoxy resin. The linkage between the fiber optic stress sensor and the PLC control system enables real-time monitoring of the strain rate and automatic adjustment of the cooling rate, improving the automation level and batch consistency of the production process. It effectively reduces local stress concentration, lowers the risk of cracking, and improves the mechanical strength and insulation performance of the insulator. The introduction of the automated conveying system and stress monitoring system not only optimizes the release process of internal stress in the epoxy resin but also improves the controllability and consistency of the production process by adjusting the cooling rate in real time. 2. Existing pot-type insulator tunnel furnaces suffer from significant heat waste during demolding waste heat recovery. Due to the lack of an effective waste heat recycling mechanism, the high-temperature and humid air generated in the front heating zone is often directly discharged into the environment, resulting in low heat utilization and high overall energy consumption. The existing oven design does not fully consider the stringent temperature stability requirements of the slow cooling process after epoxy resin curing. During the heat preservation stage, heat loss is rapid, making it difficult to maintain an ideal temperature gradient. This leads to uneven stress distribution inside the insulator, compromising mechanical strength and insulation performance. This invention addresses this issue in the front heating zone... A dedicated insulation section with a heat exchanger is added at the tail end. The exhaust hot and humid air is filtered through high efficiency and used as the main heat source for the insulation section. The microporous air supply system between the top air duct and the bottom roller shaft achieves balanced heating on both sides. The variable frequency circulating fan automatically adjusts the air volume according to the real-time temperature to ensure a stable and controllable gradient cooling rate. This not only significantly reduces energy consumption in the insulation stage, but also eliminates the risk of internal stress cracking caused by sudden temperature changes by precisely controlling the temperature gradient. It significantly improves the mechanical strength and insulation performance of the insulator, while reducing dependence on external heat sources and lowering the overall operating cost. Attached Figure Description

[0019] Figure 1 The diagram shown is a first three-dimensional structural schematic of a waste heat recovery device for demolding a basin-type insulator tunnel furnace according to the present invention. Figure 2 The diagram shown is a first internal three-dimensional structural schematic of a waste heat recovery device for demolding a basin-type insulator tunnel furnace according to the present invention. Figure 3 The diagram shown is a three-dimensional internal structure of a waste heat recovery device for demolding a basin-type insulator tunnel furnace according to the present invention. Figure 4 The diagram shown is a side-view perspective of the waste heat recovery device for demolding a basin-type insulator tunnel furnace according to the present invention. Explanation of reference numerals in the attached drawings: 1. Main body of the tunnel furnace demolding waste heat recovery device; 2. Transmission mechanism; 3. Bottom roller; 4. Air circulation mechanism; 5. Terminal controller; 6. Sealing pneumatic door; 7. Heating tray; 8. Air inlet fan; 9. Connecting platform. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1-4This invention provides an embodiment of a waste heat recovery device for demolding insulators in a tunnel furnace, comprising a main body 1, a transmission mechanism 2, an air circulation mechanism 4, a terminal controller 5, a sealed pneumatic door 6, a heating tray 7, and a connecting platform 9. The main body 1 is connected to the outlet end of the tunnel furnace via the connecting platform 9. The transmission mechanism 2 is located inside the main body 1, and the air circulation mechanism 4 is located outside the main body 1. The air circulation mechanism 4 is used to retain and recover the heat carried by the demolded insulators produced by the tunnel furnace. The terminal controller 5 is located on one side of the main body 1. Sealed pneumatic doors 6 are located on both sides of the insulation section inside the main body 1. The surface of the transmission mechanism 2 is provided with a heating tray 7. The connecting platform 9 is located at the end of the main body 1 closest to the tunnel furnace.

[0022] The main body 1 of the tunnel furnace demolding waste heat recovery device is connected to the outlet end of the tunnel furnace via the connecting platform 9. The demolded insulator is transferred via the transmission mechanism 2. The air circulation mechanism 4 forms a double circulation air duct to provide double circulation air supply to the insulation section, so as to achieve uniform heating on both sides of the mold. The terminal controller 5 controls the entire equipment. The sealing pneumatic door 6 seals the inside of the main body 1 of the tunnel furnace demolding waste heat recovery device to form a closed cavity. The heating tray 7 supports the demolded insulator.

[0023] The transmission mechanism 2 is equipped with a bottom roller 3 inside. Multiple sets of micro-holes are provided in the gap of the bottom roller 3. The micro-holes are located on the bottom surface of the contact surface of the heating tray 7. An air inlet fan 8 is provided below the transmission mechanism 2. The air outlet of the air inlet fan 8 is connected to the micro-holes in the gap of the bottom roller 3. In use, the air inlet fan 8 supplies air to the micro-holes in the gap of the bottom roller 3, and the air is delivered through the bottom roller 3 to uniformly heat the bottom surface of the mold.

[0024] The cavity sidewalls of the main body 1 of the tunnel furnace demolding waste heat recovery device are made of thick aluminum silicate rock wool.

[0025] The outer side of the sealed pneumatic door 6 is equipped with a double-layer high-temperature silicone sealing strip.

[0026] The bottom of the heating tray 7 is embedded with a thick thermally conductive aluminum plate, which is 3mm thick.

[0027] Transmission mechanism 2 includes: A11: Flexible double-speed chain conveyor unit, including double-speed chain, variable frequency speed control motor and tensioning device, used to flexibly adjust the mold conveying speed through speed control; A12: Roller spiral guide conveying unit, including spiral guide groove roller, bearing support seat and transmission gear set, used to promote uniform release of internal stress of epoxy resin through slight rotation of the tray; A13: Position detection and positioning unit, including proximity switch, encoder and positioning cylinder, used to achieve precise positioning of mold in the heat preservation section through position feedback.

[0028] The air circulation mechanism 4 includes: A21: Top forced air circulation unit, including a circulating fan, air duct heater and air volume regulating valve, is used to force convection heating of the mold's convex surface to maintain surface temperature uniformity; A22: Bottom micro-perforated air supply unit, including micro-perforated air supply plate, air supply duct and pressure regulating valve, used to supply air through micro-perforations in the roller gap to eliminate the concave surface "thermal dead zone"; A23: Waste heat recovery and circulation unit, including heat exchanger, exhaust gas pipe and fresh air inlet pipe, is used to recover waste heat from the front heating zone as part of the heat source for the insulation section.

[0029] Terminal controller 5 includes: A31: PLC main control unit, including PLC controller, touch screen and communication module, used to execute preset heat preservation program and control the power of heating tubes in each temperature zone; A32: Temperature control unit, including temperature sensor, solid-state relay and cooling fan, used to achieve precise temperature control of each temperature zone within the insulation section; A33: Stress monitoring and adjustment unit, including fiber optic stress sensor, signal conditioning circuit and emergency adjustment module, used to monitor the surface strain of insulator in real time and dynamically adjust the cooling rate.

[0030] Connector 9 includes: A41: Data interface unit, including Ethernet interface, serial communication interface and data conversion module, used to support high-speed data transmission and protocol conversion between devices; A42: Material transfer interface unit, including conveyor belt connection device, positioning pins and holes, and quick-change fixture, used to realize the automatic transfer of molds between tunnel furnace and insulation device; A43: Power and gas supply interface unit, including power socket and switch, gas supply connector and filter and emergency stop button, is used to provide the electrical energy and gas supply required for equipment operation to ensure safety and stability.

[0031] A basin-type insulator tunnel furnace is equipped with the aforementioned basin-type insulator tunnel furnace demolding waste heat recovery device.

[0032] Example 1 Background: Traditional pot-type insulator tunnel furnaces generally suffer from four major problems after demolding: risk of sudden temperature drop, insufficient heat preservation uniformity, serious heat waste, and defects caused by manual intervention. After demolding, the mold is directly exposed to room temperature, with a temperature difference of 80-100℃, resulting in significant thermal stress on the surface and inside of the insulator, and a crack incidence rate as high as 15%-20%. Ordinary ovens use a single heat source for heating, and the temperature difference between the convex and concave surfaces of the mold is ≥10℃, causing local stress concentration. The lack of targeted heat preservation design results in heat loss of up to 40% in the first 30 minutes after demolding, with an energy utilization rate of less than 50%. Relying on manual temperature monitoring, it is impossible to automatically execute the gradient cooling curve, and the heat preservation time error is ±30 minutes, affecting batch consistency. This solution achieves precise control of the critical 6-hour heat preservation period after demolding through a double-layer gradient heat preservation cavity design, waste heat recovery, and gradient cooling system optimization, significantly improving the mechanical strength and insulation performance of the insulator.

[0033] Implementation steps: S11: A dedicated insulation section is set up 3 meters from the end of the heating zone of the tunnel furnace. The upper and lower layers are equipped with independent temperature control systems, with a total of 10 temperature detection points and 5 temperature zones. The inner liner of the insulation section adopts a double circulation air duct structure. The top air duct blows preheated air to maintain the temperature of the convex surface, and the bottom roller gap is equipped with a microporous air supply heating tray with 7 contact surfaces. A 3mm thick heat-conducting aluminum plate is embedded in the bottom of the tray, and a spiral guide groove is designed at the contact point with the roller to ensure uniform heat transfer. S12: After demolding, the insulator, along with the mold, is placed on a tray with the convex side facing upwards to ensure close contact with the heat-conducting aluminum plate. The "High-Pressure Type" preset insulation program is invoked on the touchscreen. After startup, the tray enters the insulation section at a speed of 0.1 m / min. The pneumatic door closes, forming a sealed cavity. For the first 30 minutes, the waste heat circulation mode is activated, utilizing the waste heat from the previous stage to stabilize the temperature at 120℃±2℃. In subsequent stages, the system operates according to a preset gradient cooling curve. The PLC dynamically adjusts the power of each temperature zone based on 20 temperature data points, ensuring a cooling rate error ≤±0.5℃ / min. S13: The insulation section is equipped with a variable frequency circulating fan, which automatically adjusts the air volume (500-1500m³ / h) according to the real-time temperature. The top air duct velocity is 5-10m / s, and the bottom micro-hole air supply pressure is 0.05-0.1MPa, so as to achieve uniform heating on both sides of the mold and eliminate the "thermal dead corner" on the concave surface; S14: Optional fiber optic stress sensor to monitor the strain on the insulator surface in real time. When the strain rate exceeds the threshold, the cooling rate is automatically adjusted. PLC controls the power of the heating tubes in each temperature zone (0-100% adjustable) to ensure gradient cooling accuracy. At the same time, high-speed data transmission and protocol conversion between devices are realized through the data interface unit to ensure the automated execution of the whole process.

[0034] Data comparison table: .

Claims

1. A waste heat recovery device for demolding a basin-type insulator tunnel furnace; characterized in that: The device includes a tunnel furnace demolding waste heat recovery device body (1), a transmission mechanism (2), an air circulation mechanism (4), a terminal controller (5), a sealed pneumatic door (6), a heating tray (7), and a connecting platform (9). The tunnel furnace demolding waste heat recovery device body (1) is connected to the outlet end of the tunnel furnace via a connecting platform (9). The tunnel furnace demolding waste heat recovery device body (1) is equipped with a transmission mechanism (2) inside and an air circulation mechanism (4) is equipped on the outside of the tunnel furnace demolding waste heat recovery device body (1). The air circulation mechanism (4) is used to heat and recover the heat carried by the demolding insulators produced by the tunnel furnace. A terminal controller (5) is provided on one side of the tunnel furnace demolding waste heat recovery device body (1). Sealed pneumatic doors (6) are provided on both sides of the heat preservation section inside the tunnel furnace demolding waste heat recovery device body (1). A heating tray (7) is provided on the surface of the transmission mechanism (2). A connecting platform (9) is provided at the end of the tunnel furnace demolding waste heat recovery device body (1) near the tunnel furnace.

2. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The transmission mechanism (2) is equipped with a bottom roller (3) inside. Multiple micro-holes are provided in the gap of the bottom roller (3). The micro-holes are located on the bottom surface of the contact surface of the heating tray (7). An air inlet fan (8) is provided below the transmission mechanism (2). The air outlet of the air inlet fan (8) is connected to the micro-holes in the gap of the bottom roller (3).

3. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The cavity sidewall of the main body (1) of the tunnel furnace demolding waste heat recovery device is made of thick aluminum silicate rock wool.

4. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The outer side of the sealed pneumatic door (6) is fitted with a double-layer high-temperature silicone sealing strip.

5. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The bottom of the heating tray (7) is embedded with a thick thermally conductive aluminum plate, which is 3mm thick.

6. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The transmission mechanism (2) includes: A11: Flexible double-speed chain conveyor unit, including double-speed chain, variable frequency speed control motor and tensioning device, used to flexibly adjust the mold conveying speed through speed control; A12: Roller spiral guide conveying unit, including spiral guide groove roller, bearing support seat and transmission gear set, used to promote uniform release of internal stress of epoxy resin through slight rotation of the tray; A13: Position detection and positioning unit, including proximity switch, encoder and positioning cylinder, used to achieve precise positioning of mold in the heat preservation section through position feedback.

7. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The air circulation mechanism (4) includes: A21: Top forced air circulation unit, including a circulating fan, air duct heater and air volume regulating valve, is used for forced convection heating of the mold's convex surface; A22: Bottom micro-perforation air supply unit, including micro-perforation air supply plate, air supply duct and pressure regulating valve, for supplying air through micro-perforations in the roller gap; A23: Waste heat recovery and circulation unit, including heat exchanger, exhaust gas duct and fresh air inlet duct, used to recover waste heat from the front heating zone.

8. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The terminal controller (5) includes: A31: PLC main control unit, including PLC controller, touch screen and communication module, used to execute preset heat preservation program; A32: Temperature control unit, including temperature sensor, solid-state relay and cooling fan, used to achieve precise temperature control of each temperature zone within the insulation section; A33: Stress monitoring and adjustment unit, including fiber optic stress sensor, signal conditioning circuit and emergency adjustment module, used for real-time monitoring of insulator surface strain.

9. The waste heat recovery device for demolding of a basin-type insulator tunnel furnace according to claim 1, characterized in that: The connecting station (9) includes: A41: Data interface unit, including Ethernet interface, serial communication interface and data conversion module, used to support high-speed data transmission and protocol conversion between devices; A42: Material transfer interface unit, including conveyor belt connection device, positioning pins and holes, and quick-change fixture, used to realize the automatic transfer of molds between tunnel furnace and insulation device; A43: Power and gas supply interface unit, including power socket and switch, gas supply connector and filter and emergency stop button, used to provide the electrical and gas supply required for equipment operation.

10. A basin-type insulator tunnel furnace, characterized in that: It is equipped with a waste heat recovery device for demolding of a basin-type insulator tunnel furnace as described in any one of claims 1-9.

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