A double chamber vacuum oil quenching furnace body

Abstract

The utility model discloses a double -chamber vacuum oil quenching furnace body, including the furnace shell, the front side of furnace shell is hinged with the closing door through the hinge, and the oil quenching groove is seted up in the front end bottom wall of furnace shell, and the heating cavity is seted up in the inside rear end of furnace shell, still includes the partition mechanism, the partition mechanism: it includes the shell, the connecting frame, the closing subassembly and the heat -proof door, the top wall middle part of shell is passed through and is established in shell, and the rear wall of shell is equipped with the connecting frame, and the inside of connecting frame is equipped with the heat -proof door through the closing subassembly, and the rear side of heat -proof door is in contact with the front end wall body edge place of heating cavity and fits, and this double -chamber vacuum oil quenching furnace body passes through the transmission element, utilizes the slope groove body orientation to make the heat -proof door body of double -chamber vacuum oil quenching furnace vertical down -shift can longitudinally move back, makes the heat -proof door body can with the front end frame longitudinal extrusion contact of heating position, improves the sealing effect of heat -proof door body to the heating position in double -chamber vacuum oil quenching furnace.

Description

Technical Field

[0001] This utility model relates to the field of vacuum oil quenching furnace technology, specifically a double-chamber vacuum oil quenching furnace body. Background Technology

[0002] A dual-chamber vacuum oil quenching furnace is a vacuum heat treatment device consisting of a heating chamber and an oil quenching and gas cooling chamber. It is mainly used for bright quenching and annealing processes of metal materials. Its core function is to achieve rapid cooling through oil quenching or gas cooling after heating in a vacuum environment to improve material properties. In the prior art, patent CN 209178433 U discloses a vacuum dual-chamber oil quenching and gas cooling furnace shell, including a front vacuum furnace and a rear vacuum furnace. An inner heating furnace is located in the middle of the front vacuum furnace, and quenching oil pipes are evenly arranged on the inner wall of the inner heating furnace. Support rods are located on the left and right sides of the quenching oil pipes below. Because a threaded fixing housing and a threaded fixing column are installed, the motor needs to be inspected after prolonged use. At this time, the operator rotates the threaded fixing housing to separate the external threaded body at the lower outer wall of the hollow fixing housing from the internal threaded fixing hole at the inner wall of the hollow fixing column. The motor can be removed for maintenance, which also facilitates the disassembly and installation of the threaded fixed housing and threaded fixed column without affecting the overall aesthetics. This not only maintains the overall appearance but also improves the utilization rate of the equipment. During the operation of this device, the insulated door cylinder drives the insulated door to move vertically up and down, thereby sealing the heating part. However, since the insulated door moves vertically, the horizontal gap between itself and the heating part needs to be sealed by a sealing strip. The sealing strip is prone to aging after long-term use under high temperature and ring conditions, resulting in a reduction in the sealing effect. Therefore, we propose a double-chamber vacuum oil quenching furnace body. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a double-chamber vacuum oil quenching furnace body. This device uses a transmission element and an inclined groove to guide the door body of the double-chamber vacuum oil quenching furnace to move vertically downward and longitudinally backward at the same time. This allows the door body to make longitudinal compression contact with the front frame of the heating part, thereby improving the sealing effect of the door body on the heating part inside the double-chamber vacuum oil quenching furnace and effectively solving the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a double-chamber vacuum oil quenching furnace body, including a furnace shell, a closed door is hinged to the front side of the furnace shell, an oil quenching groove is provided on the bottom wall of the front end of the furnace shell, a heating chamber is provided at the rear end of the interior of the furnace shell, and a partition mechanism is also included.

[0005] The separation mechanism includes a protective shell, a connecting frame, a closing assembly, and an insulated door. The protective shell is installed through the middle of the top wall of the protective shell. The connecting frame is provided on the rear wall of the protective shell. The insulated door is provided inside the connecting frame through the closing assembly. The rear side of the insulated door is in close contact with the edge of the front wall of the heating chamber. The device uses a transmission element and an inclined groove to guide the insulated door of the double-chamber vacuum oil quenching furnace to move vertically downward and longitudinally backward at the same time. This allows the insulated door to make longitudinal compression contact with the front frame of the heating part, thereby improving the sealing effect of the insulated door on the heating part inside the double-chamber vacuum oil quenching furnace.

[0006] Furthermore, it also includes a microcontroller, which is located outside the furnace shell. The input terminal of the microcontroller is electrically connected to an external power supply, which facilitates the control of electrical components inside the device.

[0007] Furthermore, the closing assembly includes a connecting seat, a guide seat, a dovetail groove, a slide block, an electro-hydraulic actuator, and a laser sensor. The connecting seat is located on the front side of the door insulation unit. A guide seat is located on the front side of the connecting seat. A slide block is slidably connected in the dovetail groove on the upper side of the guide seat. An electro-hydraulic actuator is located on the upper side of the connecting seat. The input end of the electro-hydraulic actuator is electrically connected to the output end of the microcontroller. The telescopic end of the electro-hydraulic actuator is fixedly connected to the upper side of the slide block. A laser sensor is located on the upper side of the slide block. The laser sensor is bidirectionally electrically connected to the microcontroller. A guide rod is located on the upper left end of the slide block. The upper end of the guide rod is slidably connected to a circular hole on the top wall of the connecting frame, which allows the door insulation unit inside the double-chamber vacuum oil quenching furnace to move vertically downward and controls the downward movement distance of the door insulation unit.

[0008] Furthermore, the closing assembly also includes a fixed seat, an L-shaped guide seat, and guide slides. The fixed seat is symmetrically arranged laterally on the rear wall of the connecting frame. The lower rear side of the fixed seat is provided with L-shaped guide seats distributed vertically upwards and downwards. The left and right sides of the connecting seat are rotatably connected to guide slides distributed vertically symmetrically through bearings. The guide slides are slidably connected to the L-shaped guide grooves in the adjacent L-shaped guide seats, so that the insulation door inside the double-chamber vacuum oil quenching furnace moves vertically downwards while moving longitudinally backwards.

[0009] Furthermore, it also includes an oil cooler, which is located outside the furnace shell. The input end of the oil cooler is electrically connected to the output end of the microcontroller. The bottom of the oil quenching tank is equipped with a cooling pipe. The left end of the cooling pipe is connected to the oil inlet of the oil cooler through an oil pipe, and the right end of the cooling pipe is connected to the oil outlet of the oil cooler through an oil pipe. Temperature sensors are evenly distributed on the left and right walls of the oil quenching tank. Each temperature sensor is bidirectionally electrically connected to the microcontroller to perform oil quenching and cooling treatment on the alloy workpieces inside the dual-chamber vacuum oil quenching furnace.

[0010] Furthermore, the left and right walls and the top wall of the heating chamber are provided with uniformly distributed heating tubes. The input end of each heating tube is electrically connected to the output end of the microcontroller. The inner wall of the heating chamber is provided with uniformly distributed temperature sensors, which are bidirectionally electrically connected to the microcontroller to perform heating and bright quenching treatment on the alloy workpieces inside the dual-chamber vacuum oil quenching furnace.

[0011] Furthermore, it also includes a vacuum generator, which is located outside the furnace shell. The front and rear ends of the right wall of the furnace shell are provided with bifurcated pipes. Each bifurcated pipe has a first gas pipe at its upper end, and a second gas pipe is provided between the first gas pipes. The right end of the second gas pipe is connected to the air extraction port of the vacuum generator. Each first gas pipe has a solenoid valve connected in series in its upper end. The input end of the solenoid valve and the vacuum generator are electrically connected to the output end of the microcontroller to perform vacuuming operations inside the double-chamber vacuum oil quenching furnace.

[0012] Furthermore, electric exhaust valves are installed through the front end of the top wall of the furnace shell and the top of the heating chamber. The input end of the electric exhaust valve is electrically connected to the output end of the microcontroller to perform negative pressure gas replenishment operation in the double-chamber vacuum oil quenching furnace.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This dual-chamber vacuum oil quenching furnace body has the following advantages:

[0014] When using the double-chamber vacuum oil quenching furnace body, the device uses a closed assembly and inclined groove to guide the insulation door of the double-chamber vacuum oil quenching furnace to move vertically downwards and longitudinally backwards at the same time. This allows the insulation door to make longitudinal compression contact with the front frame of the heating part, thereby reducing the longitudinal gap between the two and improving the sealing effect of the insulation door on the heating part inside the double-chamber vacuum oil quenching furnace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the left side structure of the connecting frame, closing assembly, and insulation door of this utility model;

[0018] Figure 4 This is an enlarged structural diagram of point A in this utility model.

[0019] In the diagram: 1 Furnace shell, 2 Microcontroller, 3 Closed door, 4 Oil quenching tank, 5 Separation mechanism, 51 Protective shell, 52 Connecting frame, 53 Closure assembly, 531 Connecting seat, 532 Guide seat, 533 Dovetail slide, 534 Slide, 535 Electro-hydraulic actuator, 536 Laser sensor, 537 Fixed seat, 538 L-type guide seat, 539 Guide slide column, 54 Insulation door, 6 Cooling pipe, 7 Temperature sensor one, 8 Oil cooler, 9 Oil pipe one, 10 Oil pipe two, 11 Heating pipe, 12 Temperature sensor two, 13 Branch pipe, 14 Gas pipe one, 15 Gas pipe two, 16 Vacuum generator, 17 Solenoid valve, 18 Electric exhaust valve, 19 Guide rod. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This embodiment provides a technical solution: a double-chamber vacuum oil quenching furnace body, including a furnace shell 1, a closed door 3 hinged to the front side of the furnace shell 1, an oil quenching groove 4 opened on the bottom wall of the front end of the furnace shell 1, a heating chamber opened at the rear end of the furnace shell 1, and also includes a single-chip microcomputer 2, which is located outside the furnace shell 1. The input end of the single-chip microcomputer 2 is electrically connected to an external power supply. When using the double-chamber vacuum oil quenching furnace body to perform bright quenching and annealing processes on alloy steel workpieces, the alloy steel workpiece is moved along the guide rail on the bottom wall of the furnace shell 1 to the oil quenching groove 4 of the double-chamber vacuum oil quenching furnace by an external furnace car, and then the closed door 3 is closed. The closed door 3 is fixedly connected to the furnace shell 1 by a rotary latch lock. A sealing ring can be set between the contact surface of the closed door 3 and the furnace shell 1 to improve the closing and sealing performance of the closed door 3. It also includes a separation mechanism 5.

[0022] It also includes a vacuum generator 16, which is located outside the furnace shell 1. A branch pipe 13 extends through both the front and rear ends of the right wall of the furnace shell 1. Each branch pipe 13 has a first gas pipe 14 at its upper end, and a second gas pipe 15 connects the first gas pipe 14 to the second gas pipe 15. The right end of the second gas pipe 15 is connected to the suction port of the vacuum generator 16. A solenoid valve 17 is connected in series at the upper end of each first gas pipe 14. Both the solenoid valve 17 and the input terminal of the vacuum generator 16 are electrically connected to the output terminal of the microcontroller 2. When the microcontroller 2 is started... Vacuum generator 16 consists of a nozzle, a receiving chamber, a mixing chamber, and a diffusion chamber. Its core principle is to generate negative pressure through a positive pressure gas source, so that its own air extraction port can perform vacuuming operations on the heating chamber and the oil quenching tank 4 through air pipe 2 15, air pipe 14 and branch pipe 13 respectively. The microcontroller 2 controls the solenoid valve 17 to open and close, thereby controlling the opening and closing of the corresponding air pipe 14, and thus controlling the opening and closing of the vacuuming operation of the heating chamber and the oil quenching tank 4.

[0023] The partition mechanism 5 includes a protective shell 51, a connecting frame 52, a closing assembly 53, and an insulated door 54. The protective shell 51 is disposed through the middle of the top wall of the protective shell 51. The connecting frame 52 is provided on the rear wall of the protective shell 51. The insulated door 54 is provided inside the connecting frame 52 through the closing assembly 53. The rear side of the insulated door 54 is in close contact with the edge of the front wall of the heating chamber.

[0024] The closing assembly 53 includes a connecting seat 531, a guide seat 532, a dovetail groove 533, a slide 534, an electro-hydraulic actuator 535, and a laser sensor 536. The connecting seat 531 is located on the front side of the door 54. The guide seat 532 is located on the front side of the connecting seat 531. The slide 534 is slidably connected in the dovetail groove 533 on the upper side of the guide seat 532. The electro-hydraulic actuator 535 is located on the upper side of the connecting seat 531. The input end of the electro-hydraulic actuator 535 is electrically connected to the output end of the microcontroller 2. The telescopic end of the electro-hydraulic actuator 535 is fixedly connected to the upper side of the slide 534. The laser sensor 536 is located on the upper side of the slide 534. The laser sensor 536 is bidirectionally electrically connected to the microcontroller 2. The guide rod 19 is located on the upper left side of the slide 534. The upper end of the guide rod 19 is slidably connected to the round hole on the top wall of the connecting frame 52.

[0025] The closing assembly 53 also includes a fixed seat 537, an L-shaped guide seat 538, and a guide slide 539. The fixed seat 537 is symmetrically arranged laterally on the rear wall of the connecting frame 52. The lower rear side of the fixed seat 537 is provided with vertically distributed L-shaped guide seats 538. The left and right sides of the connecting seat 531 are rotatably connected to vertically distributed guide slides 539 through bearings. The guide slides 539 are slidably connected to the L-shaped guide grooves in the horizontally adjacent L-shaped guide seats 538.

[0026] After the internal vacuum is completed, the alloy steel workpiece is transported into the heating chamber by an external furnace trolley. Then, the microcontroller 2 activates the electro-hydraulic actuator 535, causing its extension end to move the slide block 534 vertically downwards. The slide block 534, through its sliding connection with the dovetail groove 533, causes the guide seat 532 to move synchronously downwards through the connecting seat 531, driving the insulation door 54. During this process, the guide seat 532 drives its guide column 539 to slide down along the vertical opening of the L-shaped guide groove of the corresponding L-shaped guide seat 538. When the guide column 539 slides down to the corner of the L-shaped guide groove, as the insulation door 54 continues to move vertically downwards, the guide column 539... 39 slides along the inclined groove at the bottom of the L-shaped guide groove. At this time, the inclined surface between the inclined groove at the bottom of the L-shaped guide groove and the guide slide 539 slides and squeezes, causing the door insulation 54 to move vertically downward and longitudinally backward at the same time, improving the tightness of the fit between the door insulation 54 and the edge of the front wall of the heating cavity. During this process, the slide 534 slides longitudinally adaptively along the dovetail groove 533. During the vertical movement of the slide 534, it drives the guide rod 19 to slide adaptively along the circular hole. Through the sliding connection between the two, the radial pressure applied by the slide 534 to the telescopic end of the electro-hydraulic actuator 535 is borne, preventing the telescopic extension of the electro-hydraulic actuator 535 from being affected. Damage occurs at the end due to radial pressure. Simultaneously, during the vertical movement of the insulation door 54, the microcontroller 2 activates the laser sensor 536. The laser sensor 536 emits a light signal that illuminates the top wall of the connecting frame 52 and reflects back to the initial position. Based on the propagation time and speed of the light signal, the vertical movement distance of the insulation door 54 is detected, and the detection result is transmitted to the microcontroller 2 as an electrical signal. The microcontroller 2, based on the measurement results and the positional data between the internal components, controls the opening and closing of the electro-hydraulic actuator 535, thereby achieving automatic closure and sealing of the front end of the heating chamber by the insulation door 54, separating the heating chamber from the oil quenching tank 4. A second sealing ring can be installed at the rear edge of 4 to improve the sealing performance between the insulation door 54 and the front wall edge of the heating chamber. Both the second and the first sealing rings can be graphene composite sealing rings. The working temperature of the graphene composite sealing rings can reach -200℃ to 850℃. The second and the first sealing rings should be replaced regularly to avoid aging. The device uses a transmission element and an inclined groove to guide the insulation door of the double-chamber vacuum oil quenching furnace to move vertically downward and longitudinally backward at the same time, so that the insulation door can make longitudinal compression contact with the front frame of the heating part, thereby improving the sealing effect of the insulation door on the heating part in the double-chamber vacuum oil quenching furnace.

[0027] Heating tubes 11 are evenly distributed on the left, right, and top walls of the heating chamber. The input ends of the heating tubes 11 are electrically connected to the output end of the microcontroller 2. Temperature sensors 12 are evenly distributed on the inner wall of the heating chamber. The temperature sensors 12 are bidirectionally electrically connected to the microcontroller 2. The microcontroller 2 activates the heating tubes 11 to perform bright quenching treatment on the alloy steel workpiece in the heating chamber. During this process, the microcontroller 2 activates the temperature sensors 12. The temperature sensors 12 detect the bright quenching temperature of the alloy steel workpiece by detecting the change in resistance value generated by the internal thermistor as the external temperature changes, and transmit the detection result to the microcontroller 2 in the form of an electrical signal. The inner wall of the heating chamber has multiple distributed positions. Different temperature sensors 12 are used to improve the accuracy of detecting the bright quenching temperature of alloy steel workpieces. The microcontroller 2 adjusts the output power of the heating tube 11 according to the detection results, thereby realizing the adjustment of the bright quenching temperature of alloy steel workpieces. The wall surface of the heating cavity and the rear side of the insulation door 54 are provided with RLHY-12 high temperature heat insulation coating. The RLHY-12 high temperature heat insulation coating is composed of high temperature adhesive, hollow microspheres, various high temperature fillers and special additives. The working temperature range of the RLHY-12 high temperature heat insulation coating is -80~2000℃. The RLHY-12 high temperature heat insulation coating is used to insulate the heating cavity.

[0028] It also includes an oil cooler 8, located outside the furnace shell 1. The input end of the oil cooler 8 is electrically connected to the output end of the microcontroller 2. A cooling pipe 6 is provided at the bottom of the oil quenching tank 4. The left end of the cooling pipe 6 is connected to the oil inlet of the oil cooler 8 through an oil pipe 9, and the right end of the cooling pipe 6 is connected to the oil outlet of the oil cooler 8 through an oil pipe 10. Temperature sensors 7 are evenly distributed on the left and right walls of the oil quenching tank 4. The temperature sensors 7 are all bidirectionally electrically connected to the microcontroller 2. After the alloy steel workpiece is heated and bright quenched, the microcontroller 2 opens the insulation door 54 using the same principle. Then, the alloy steel workpiece in the heating chamber is moved to the oil quenching tank 4 for oil quenching and cooling through the external furnace trolley. During this process, the microcontroller 2 activates the temperature sensors 7. The temperature of the quenching oil in the oil quenching tank 4 is detected using the same principle, and the detection result is transmitted to the microcontroller 2 in the form of an electrical signal. Multiple temperature sensors 7 are also set to improve the accuracy of temperature detection. When the microcontroller 2 detects that the temperature of the quenching oil in the oil quenching tank 4 is too high, the microcontroller 2 starts the oil cooler 8. The oil cooler 8 consists of a refrigeration system, an oil circulation system and an automatic control system. The coolant in the cooling pipe 6 is drawn in through the oil pipe 9 through the oil circulation system, and the coolant after heat exchange and cooling by its own refrigeration system is delivered to the cooling pipe 6 through the oil pipe 10. Through the heat exchange between the coolant in the cooling pipe 6 and the quenching oil in the oil quenching tank 4, the quenching oil in the oil quenching tank 4 is cooled. The cooling pipe 6 has a serpentine structure.

[0029] Electric exhaust valves 18 are installed through the front end of the top wall of the furnace shell 1 and the top of the heating chamber. The input end of the electric exhaust valve 18 is electrically connected to the output end of the microcontroller 2. After the alloy steel workpiece is oil quenched, the microcontroller 2 opens the electric exhaust valve 18. The electric exhaust valve drives the valve stem to move through the electric actuator, thereby adjusting the internal air pressure of the device by negative pressure replenishment.

[0030] The working principle of the double-chamber vacuum oil quenching furnace body provided by this utility model is as follows: When performing bright quenching and annealing processes on alloy steel workpieces using the double-chamber vacuum oil quenching furnace body, the alloy steel workpiece is moved along the guide rail on the bottom wall of the furnace shell 1 to the oil quenching tank 4 of the double-chamber vacuum oil quenching furnace by an external furnace car. Then, the closing door 3 is closed. The closing door 3 is fixedly connected to the furnace shell 1 by a rotary latch. A sealing ring can be set between the contact surface of the closing door 3 and the furnace shell 1 to improve the closing and sealing performance of the closing door 3. Then, the microcontroller 2 starts the vacuum generator 16. The vacuum generator 16 consists of a nozzle, a receiving chamber, a mixing chamber, and a diffusion chamber. Its core principle is to generate negative pressure through a positive pressure gas source, so that its own exhaust port passes through the gas pipe 15 and the gas pipe 1. Pipes 14 and 13 perform vacuuming operations on the heating chamber and oil quenching tank 4, respectively. The microcontroller 2 controls the opening and closing of the solenoid valve 17, thereby controlling the opening and closing of the corresponding gas pipe 14, and consequently controlling the vacuuming operation of the heating chamber and oil quenching tank 4. After the internal vacuuming is completed, the alloy steel workpiece is transported into the heating chamber via an external furnace trolley. Then, the microcontroller 2 activates the electro-hydraulic actuator 535, causing its extension end to move the slide block 534 vertically downwards. The slide block 534, through its sliding connection with the dovetail groove 533, causes the guide seat 532 to move synchronously downwards through the connecting seat 531, driving the insulation door 54. During this process, the guide seat 532 drives its guide slide column 539 along the corresponding L-shaped guide seat 538. The vertical opening of the L-shaped guide groove slides down. When the guide pin 539 slides down to the corner of the L-shaped guide groove, as the door insulation 54 continues to move vertically downward, the guide pin 539 slides along the inclined groove at the bottom of the L-shaped guide groove. At this time, through the inclined surface sliding and pressing between the inclined groove at the bottom of the L-shaped guide groove and the guide pin 539, the door insulation 54 moves vertically downward and longitudinally backward at the same time, improving the tightness of the fit between the door insulation 54 and the edge of the front wall of the heating cavity. During this process, the slide block 534 slides adaptively longitudinally along the dovetail groove 533. During the vertical movement of the slide block 534, it drives the guide rod 19 to slide adaptively along the circular hole. Through the sliding connection between the two, the extension end of the electro-hydraulic actuator 535 is subjected to the force of the slide block 534. Radial pressure is borne to prevent damage to the telescopic end of the electro-hydraulic actuator 535 due to radial pressure. Simultaneously, during the vertical movement of the door insulation 54, the microcontroller 2 activates the laser sensor 536. The laser sensor 536 emits a light signal that illuminates the top wall of the connecting frame 52 and reflects back to the initial position. Based on the propagation time and speed of the light signal, the vertical movement distance of the door insulation 54 is detected, and the detection result is transmitted to the microcontroller 2 as an electrical signal. The microcontroller 2, based on the measurement results and the positional data between the internal components, controls the opening and closing of the electro-hydraulic actuator 535, thereby achieving automatic closure and sealing of the front end of the heating chamber by the door insulation 54, separating the heating chamber from the oil quenching tank 4. A second sealing ring can be installed at the rear edge of the door insulation 54.This improves the sealing performance between the insulation door 54 and the edge of the front wall of the heating chamber. Both sealing ring 2 and sealing ring 1 can be made of graphene composite sealing rings, which can operate at temperatures from -200℃ to 850℃. Sealing ring 2 and sealing ring 1 are replaced regularly to avoid aging. Subsequently, the microcontroller 2 starts the heating tube 11 to perform bright quenching treatment on the alloy steel workpiece in the heating chamber. During this process, the microcontroller 2 starts the temperature sensor 2 12. The temperature sensor 2 12 detects the bright quenching temperature of the alloy steel workpiece by measuring the change in resistance value generated by the internal thermistor element as the external temperature changes, and transmits the detection result as an electrical signal. The signal is transmitted to the microcontroller 2. Multiple temperature sensors 12 are located on the inner wall of the heating chamber. These multiple sensors improve the accuracy of detecting the bright quenching temperature of the alloy steel workpiece. The microcontroller 2 adjusts the output power of the heating tube 11 based on the detection results, thereby regulating the bright quenching temperature of the alloy steel workpiece. The surface of the heating chamber wall and the rear side of the insulation door 54 are both coated with an RLHY-12 high-temperature heat insulation coating. The RLHY-12 high-temperature heat insulation coating is composed of a high-temperature adhesive, hollow microspheres, various high-temperature fillers, and special additives. The working temperature of the RLHY-12 high-temperature heat insulation coating is... The temperature range is -80 to 2000℃. The heating chamber is insulated using an RLHY-12 high-temperature thermal insulation coating. After the alloy steel workpiece undergoes bright quenching, the microcontroller 2 opens the insulation door 54 using the same principle. Then, the alloy steel workpiece is moved from the heating chamber to the oil quenching tank 4 via an external furnace trolley for oil quenching and cooling. During this process, the microcontroller 2 activates temperature sensor 7 to detect the temperature of the quenching oil in the oil quenching tank 4 using the same principle, and transmits the detection result to the microcontroller 2 as an electrical signal. Multiple temperature sensors 7 are also configured to improve temperature detection accuracy. When the microcontroller 2 obtains the temperature of the quenching oil in the oil quenching tank 4... When the temperature is too high, the microcontroller 2 starts the oil cooler 8. The oil cooler 8 consists of a refrigeration system, an oil circulation system, and an automatic control system. The oil circulation system draws coolant from the cooling pipe 6 through oil pipe 9, and the coolant cooled by heat exchange in its own refrigeration system is transported to the cooling pipe 6 through oil pipe 10. Through heat exchange between the coolant in the cooling pipe 6 and the quenching oil in the oil quenching tank 4, the quenching oil in the oil quenching tank 4 is cooled. The cooling pipe 6 has a serpentine structure. After the alloy steel workpiece is oil-quenched, the microcontroller 2 opens the electric exhaust valve 18. The electric exhaust valve moves its valve stem via an electric actuator, thereby regulating the internal air pressure by adding negative pressure.

[0031] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be an STM8S, the electro-hydraulic actuator 535 can be a DYTZ-1000, the laser sensor 536 can be an E3C-LDA6, the temperature sensor 7 and the temperature sensor 12 can both be PT100, the oil cooler 8 can be a QG-080LY, the heating element 11 can be an MCH ceramic heating element, the vacuum generator 16 can be a ZI112A vacuum generator, the solenoid valve 17 can be a ZQDF-3Y-40, and the electric exhaust valve 18 can be an SMC-AQ5000-04. The microcontroller 2 controls the operation of the electro-hydraulic actuator 535, the laser sensor 536, the temperature sensor 7, the oil cooler 8, the heating element 11, the temperature sensor 12, the vacuum generator 16, the solenoid valve 17, and the electric exhaust valve 18 using methods commonly used in the prior art.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A double-chamber vacuum oil quenching furnace body, comprising a furnace shell (1), wherein a closed door (3) is hinged to the front side of the furnace shell (1) via a hinge, an oil quenching groove (4) is provided on the bottom wall of the front end of the furnace shell (1), and a heating chamber is provided at the rear end of the interior of the furnace shell (1), characterized in that: It also includes a separation mechanism (5); The separation mechanism (5) includes a protective shell (51), a connecting frame (52), a closing assembly (53), and an insulated door (54). The protective shell (51) is disposed through the middle of the top wall of the protective shell (51). The connecting frame (52) is provided on the rear wall of the protective shell (51). The insulated door (54) is provided inside the connecting frame (52) through the closing assembly (53). The rear side of the insulated door (54) is in close contact with the edge of the front wall of the heating chamber.

2. The furnace body of a dual-chamber vacuum oil quenching furnace according to claim 1, characterized in that: It also includes a microcontroller (2), which is located outside the furnace shell (1), and the input terminal of the microcontroller (2) is electrically connected to an external power supply.

3. The furnace body of a dual-chamber vacuum oil quenching furnace according to claim 2, characterized in that: The closing assembly (53) includes a connecting seat (531), a guide seat (532), a dovetail groove (533), a slide (534), an electro-hydraulic actuator (535), and a laser sensor (536). The connecting seat (531) is located on the front side of the door (54). The guide seat (532) is located on the front side of the connecting seat (531). The slide (534) is slidably connected in the dovetail groove (533) on the upper side of the guide seat (532). The upper side of the connecting seat (531) is provided with... An electro-hydraulic actuator (535) is provided. The input end of the electro-hydraulic actuator (535) is electrically connected to the output end of the microcontroller (2). The telescopic end of the electro-hydraulic actuator (535) is fixedly connected to the upper side of the slide (534). A laser sensor (536) is provided on the upper side of the slide (534). The laser sensor (536) is electrically connected to the microcontroller (2) in both directions. A guide rod (19) is provided on the upper left side of the slide (534). The upper end of the guide rod (19) is slidably connected to the round hole opened on the top wall of the connecting frame (52).

4. The furnace body of a dual-chamber vacuum oil quenching furnace according to claim 3, characterized in that: The closing assembly (53) also includes a fixed seat (537), an L-shaped guide seat (538), and a guide slide (539). The fixed seat (537) is symmetrically arranged laterally on the rear wall of the connecting frame (52). The lower rear side of the fixed seat (537) is provided with vertically distributed L-shaped guide seats (538). The left and right sides of the connecting seat (531) are rotatably connected to vertically symmetrically distributed guide slides (539) through bearings. The guide slides (539) are slidably connected to the L-shaped guide grooves in the horizontally adjacent L-shaped guide seats (538).

5. The furnace body of a dual-chamber vacuum oil quenching furnace according to claim 2, characterized in that: It also includes an oil cooler (8), which is located outside the furnace shell (1). The input end of the oil cooler (8) is electrically connected to the output end of the microcontroller (2). The bottom of the oil quenching tank (4) is provided with a cooling pipe (6). The left end of the cooling pipe (6) is connected to the oil inlet of the oil cooler (8) through an oil pipe (9). The right end of the cooling pipe (6) is connected to the oil outlet of the oil cooler (8) through an oil pipe (10). The left and right walls of the oil quenching tank (4) are provided with uniformly distributed temperature sensors (7). The temperature sensors (7) are all bidirectionally electrically connected to the microcontroller (2).

6. The furnace body of a dual-chamber vacuum oil quenching furnace according to claim 2, characterized in that: The heating chamber is provided with uniformly distributed heating tubes (11) on the left and right walls and the top wall. The input end of the heating tubes (11) is electrically connected to the output end of the microcontroller (2). The inner wall of the heating chamber is provided with uniformly distributed temperature sensors (12). The temperature sensors (12) are bidirectionally electrically connected to the microcontroller (2).

7. The furnace body of a dual-chamber vacuum oil quenching furnace according to claim 2, characterized in that: It also includes a vacuum generator (16), which is located outside the furnace shell (1). The front and rear ends of the right wall of the furnace shell (1) are provided with bifurcated pipes (13). The upper end of each bifurcated pipe (13) is provided with a first gas pipe (14). A second gas pipe (15) is provided between the first gas pipe (14). The right end of the second gas pipe (15) is connected to the air extraction port of the vacuum generator (16). The upper end of each first gas pipe (14) is connected in series with a solenoid valve (17). The input end of the solenoid valve (17) and the vacuum generator (16) are electrically connected to the output end of the microcontroller (2).

8. The furnace body of a dual-chamber vacuum oil quenching furnace according to claim 2, characterized in that: Electric exhaust valves (18) are provided through the front end of the top wall of the furnace shell (1) and the top of the heating chamber. The input end of the electric exhaust valves (18) is electrically connected to the output end of the microcontroller (2).

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