Advertising and retreating type heat treatment equipment monitoring device

Abstract

The utility model discloses an advancing and retreating type heat treatment equipment monitoring device which comprises a furnace body, a main oxygen probe, a thermocouple, an atmosphere adjusting pipe and a heat preservation layer, the main oxygen probe, the thermocouple, the atmosphere adjusting pipe and the heat preservation layer are arranged on the furnace body, a cylindrical in-out channel is formed in the side wall of the furnace body and the side wall of the heat preservation layer, a monitoring probe rod is arranged in the in-out channel, and a fireproof cap is fixed to one end of the monitoring probe rod. According to the device, the monitoring probe rod for reference can automatically stretch into a furnace for measurement, and the monitoring probe rod can automatically return to a furnace body heat preservation layer capable of preserving heat after measurement and comparison are finished, so that the temperature of the furnace body can be automatically measured, and the temperature of the furnace body can be accurately measured. The labor intensity of manual mounting and dismounting is reduced, the automation degree of equipment is improved, the reference monitoring probe rod does not need to be in a high-temperature working state for a long time, the monitoring probe rod cannot be immediately in room temperature to be quenched, and the service life of the reference monitoring probe rod is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment processing equipment, in particular to a retractable monitoring device for heat treatment equipment. Background Art

[0002] At present, the main monitoring and measuring devices (such as thermocouples, oxygen probes, etc.) used for process parameter control in conventional heat treatment equipment are all fixedly installed inside the furnace body to ensure their continuous and stable working states.

[0003] According to relevant standard requirements, it is necessary to compare and calibrate the above-mentioned main monitoring and measuring devices. Currently, there are generally two methods for comparison and calibration. One method is to add another set of reference monitoring and measuring devices, install and work in the same way, and compare and calibrate the monitoring and measuring results with those of the main monitoring and measuring devices used for process parameter control. However, in this way, both sets of monitoring and measuring devices are in a high-temperature working state for a long time, shortening their service lives and increasing the equipment operation cost.

[0004] Another method is to use a portable or mobile reference monitoring and measuring device. When comparison and calibration work is required, it is inserted into the heat treatment equipment to reach the same working state as the main monitoring and measuring device, and its monitoring and measuring results are compared and calibrated. However, this method requires the reference monitoring and measuring device to be temporarily inserted into the heating chamber of the heat treatment equipment and taken out after the work is completed. In addition to the cumbersome drawbacks of assembly and removal, this intermittent change in hot and cold states will also cause the monitoring and measuring device to be frequently affected by thermal shock, shortening its service life and also increasing the equipment operation cost. This is the existing problem. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the prior art, the utility model provides a retractable monitoring device for heat treatment equipment to improve the existing problems.

[0006] The utility model is realized through the following technical solutions:

[0007] A retractable monitoring device for heat treatment equipment includes a furnace body, a main oxygen probe, a thermocouple, an atmosphere regulating pipe, and a heat insulation layer provided on the furnace body. A cylindrical inlet and outlet channel is opened on the side walls of the furnace body and the heat insulation layer. A monitoring probe rod is arranged in the inlet and outlet channel. A fireproof cap is fixed at one end of the monitoring probe rod. The fireproof cap includes a fireproof cap body and a fireproof cap top. The fireproof cap body is sleeved on the monitoring probe rod, and the fireproof cap top is attached to the inner wall of the furnace body. A heat insulation cap is fixed at the other end of the monitoring probe rod. The heat insulation cap includes a heat insulation cap body and a heat insulation cap top. The heat insulation cap body extends into the inlet and outlet channel, and the heat insulation cap top is fixed on the retracting and extending assembly.

[0008] Further optimized, on the left and right sides of the middle section of the monitoring probe rod, a notch is respectively opened, and a second oxygen probe and a second thermocouple are respectively arranged in the two notches.

[0009] Further optimized, the length of the body of the heat preservation cap is equal to the length of the inlet and outlet passage.

[0010] Further optimized, the outer diameter of the body of the fire prevention cap is adapted to the inner diameter of the inlet and outlet passage.

[0011] Further optimized, the outer diameter of the body of the heat preservation cap is adapted to the inner diameter of the inlet and outlet passage.

[0012] Further optimized, the advancing and retreating assembly includes a support base, a propulsion plate, a servo motor and a driving gear. A slide rail is arranged on the support base, a chute is opened at the bottom of the propulsion plate, the slide rail is embedded in the chute, the servo motor is fixed on the support base, the output end of the servo motor is connected with the driving gear, a rack meshing with the driving gear is arranged on the propulsion plate, and the top of the heat preservation cap is fixed at one end of the propulsion plate.

[0013] Further optimized, the length of the rack is slightly less than the length of the inlet and outlet passage.

[0014] The beneficial effects of the present utility model are as follows:

[0015] This device can make the reference monitoring probe rod automatically extend into the furnace for measurement. After the measurement and comparison are completed, it automatically retracts into the heat preservation layer of the furnace body that can keep warm, reducing the labor intensity of manual installation and removal and improving the automation degree of the equipment; the temperature in the heat preservation layer is maintained above 600 °C. When monitoring is required, it can be directly heated from 600 °C without starting from room temperature, which can avoid the thermocouple thermal shock failure; in this way, the reference monitoring probe rod is neither in a high-temperature working state for a long time nor immediately in room temperature and suddenly cooled, which prolongs the service life of the reference monitoring probe rod.

[0016] Fire prevention caps and heat preservation caps are arranged at both ends of the monitoring probe rod. The body of the cap is adapted to the inner diameter of the inlet and outlet passage, and a cap top is arranged on the outer side of the body of the cap. When the monitoring probe rod extends into the furnace or retracts into the heat preservation layer, the body of the cap will block in the inlet and outlet passage, and a cap top closely adheres to the inner wall or outer wall of the furnace body, as much as possible to block the heat and atmosphere in the furnace and reduce the influence caused by the leakage of heat and atmosphere. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0018] Figure 2 It is a three-dimensional schematic diagram of the partial structure in the present utility model Figure 1 。

[0019] Figure 3 Schematic three - dimensional view of the partial structure in the present utility model Figure 2 。

[0020] Figure 4 Cross - sectional view showing the retraction of the monitoring probe rod in the present utility model.

[0021] Figure 5 Cross - sectional view showing the extension of the monitoring probe rod in the present utility model.

[0022] In the figure: 1. Furnace body; 11. Inlet and outlet passage; 2. Monitoring probe rod; 21. Second oxygen probe; 22. Second thermocouple; 3. Atmosphere regulating pipe; 4. Main oxygen probe; 5. Thermocouple; 6. Advancing and retracting assembly; 61. Support base; 611. Slide rail; 62. Servo motor; 63. Driving gear; 64. Pushing plate; 641. Chute; 642. Rack; 7. Thermal insulation cap; 71. Thermal insulation cap body; 72. Thermal insulation cap top; 8. Fire protection cap; 81. Fire protection cap body; 82. Fire protection cap top. Specific embodiments

[0023] To clearly illustrate the technical features of this solution, the present utility model will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "left", "right", "front", "rear", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0024] As Figures 1 - 5 shown, the present utility model provides a retractable monitoring device for heat treatment equipment, including a furnace body 1 and a main oxygen probe 4, a thermocouple 5, an atmosphere regulating pipe 3 and a thermal insulation layer arranged on the furnace body. Among them, the main oxygen probe, the thermocouple, and the atmosphere regulating pipe are used to monitor the process parameters in the furnace and adjust the atmosphere under the control of the terminal, serving as the main monitoring and measuring device.

[0025] A cylindrical inlet and outlet passage 11 is opened on the side walls of the furnace body 1 and the thermal insulation layer. A monitoring probe rod 2 is arranged in the inlet and outlet passage. The monitoring probe rod serves as a reference monitoring and measuring device and is used for comparative analysis with the data of the main monitoring and measuring device.

[0026] One end of the monitoring probe rod 2 is fixed with a fireproof cap 8. The fireproof cap 8 includes a fireproof cap body 81 and a fireproof cap top 82. The fireproof cap body 81 is sleeved on the monitoring probe rod 2, and the fireproof cap top 82 is attached to the inner wall of the furnace body 1. The other end of the monitoring probe rod 2 is fixed with a heat preservation cap 7. The heat preservation cap includes a heat preservation cap body 71 and a heat preservation cap top 72. The heat preservation cap body 71 extends into the access passage 11, and the heat preservation cap top 72 is fixed on the advancing and retracting assembly 6. The advancing and retracting assembly 6 drives the monitoring probe rod to extend or retract. In the extended state, the heat preservation cap top 72 is closely attached to the outer wall of the furnace body, and in the retracted state, the fireproof cap top 82 is closely attached to the inner wall of the furnace body 1.

[0027] As a preferred embodiment, a notch is respectively formed on the left and right sides of the middle section of the monitoring probe rod 2. A second oxygen probe 21 and a second thermocouple 22 are respectively arranged in the two notches. When it is necessary to compare and calibrate the main monitoring and measuring device, the monitoring probe rod extends into the furnace for detecting parameters.

[0028] As a preferred embodiment, the length of the heat preservation cap body 71 is equal to the length of the access passage 11, ensuring that when the heat preservation cap top 82 is closely attached to the outer wall of the furnace body, the monitoring probe rod can completely extend into the furnace.

[0029] As a preferred embodiment, the outer diameter of the fireproof cap body 81 is adapted to the inner diameter of the access passage 11, and the outer diameter of the heat preservation cap body 71 is adapted to the inner diameter of the access passage 11. The cap bodies of the fireproof cap and the heat preservation cap are adapted to the inner diameter of the access passage. When the monitoring probe rod 2 extends into the furnace or retracts into the heat preservation layer, the cap body will block in the access passage, and one cap top is closely attached to the inner wall or the outer wall of the furnace body, as much as possible blocking the heat and atmosphere in the furnace and reducing the influence caused by the leakage of heat and atmosphere.

[0030] As a preferred embodiment, the advancing and retracting assembly 6 includes a support base 61, a propulsion plate 64, a servo motor 62 and a driving gear 63. A slide rail 611 is arranged on the support base 61. A chute 641 is formed at the bottom of the propulsion plate 64. The slide rail 611 is embedded in the chute 641. The servo motor 62 is fixed on the support base 61. The output end of the servo motor 62 is connected to the driving gear 63. A rack 642 meshing with the driving gear 63 is arranged on the propulsion plate 64. The heat preservation cap top 72 is fixed at one end of the propulsion plate 64. The output of the servo motor drives the monitoring probe rod to extend or retract. It should be noted that the support base is fixed on the outer wall of the furnace body, and an auxiliary stabilizing bracket should be arranged on the output shaft of the servo motor, which will not be elaborated here.

[0031] As a preferred embodiment, the length of the rack 642 is slightly less than the length of the access channel 11, ensuring that in the extended state, the top 72 of the thermal insulation cap can closely adhere to the outer wall of the furnace body, and in the retracted state, the body 71 of the thermal insulation cap will not retract out of the access channel 11.

[0032] This device can automatically extend the reference monitoring probe into the furnace for measurement and automatically retract it into the thermal insulation layer of the furnace body that can provide heat preservation after the measurement and comparison are completed, reducing the labor intensity of manual installation and removal and improving the automation degree of the equipment; the temperature in the thermal insulation layer is maintained above 600 °C. When monitoring is required, it can be directly heated from 600 °C without starting from room temperature, which can avoid the thermal shock failure of the thermocouple; in this way, the reference monitoring probe does not need to be in a high-temperature working state for a long time, nor will the monitoring probe be immediately in room temperature and suddenly cooled, which prolongs the service life of the reference monitoring probe.

[0033] Details not described in the present utility model are all well-known technologies to those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present utility model, and they should all be covered by the scope of the claims of the present utility model.

Claims

1. A monitoring device for a heat treatment equipment with a retractable structure, comprising a furnace body, a main oxygen probe, a thermocouple, an atmosphere regulating pipe and a heat preservation layer arranged on the furnace body, characterized in that: A cylindrical inlet / outlet channel is provided on the side walls of the furnace body and the thermal insulation layer. A monitoring probe rod is arranged in the inlet / outlet channel. A fireproof cap is fixed at one end of the monitoring probe rod. The fireproof cap includes a fireproof cap body and a fireproof cap top. The fireproof cap body is sleeved on the monitoring probe rod, and the fireproof cap top is attached to the inner wall of the furnace body. A thermal insulation cap is fixed at the other end of the monitoring probe rod. The thermal insulation cap includes a thermal insulation cap body and a thermal insulation cap top. The thermal insulation cap body extends into the inlet / outlet channel, and the thermal insulation cap top is fixed on the advancing / retreating assembly.

2. The monitoring device for the retractable heat treatment equipment according to claim 1, wherein: A notch is provided on each of the left and right sides of the middle section of the monitoring probe rod. A second oxygen probe and a second thermocouple are respectively arranged in the two notches.

3. The retractable heat treatment equipment monitoring device according to claim 1, characterized in that: The length of the thermal insulation cap body is equal to the length of the inlet / outlet channel.

4. The retractable heat treatment equipment monitoring device according to claim 1, characterized in that: The outer diameter of the fireproof cap body is adapted to the inner diameter of the inlet / outlet channel.

5. The advancing and retreating type heat treatment equipment monitoring device according to claim 1, characterized in that: The outer diameter of the thermal insulation cap body is adapted to the inner diameter of the inlet / outlet channel.

6. The retractable heat treatment equipment monitoring device according to claim 1, characterized in that: The advancing / retreating assembly includes a support seat, a pushing plate, a servo motor and a driving gear. A slide rail is provided on the support seat. A sliding groove is formed at the bottom of the pushing plate. The slide rail is embedded in the sliding groove. The servo motor is fixed on the support seat. The output end of the servo motor is connected to the driving gear. A rack meshing with the driving gear is provided on the pushing plate. The thermal insulation cap top is fixed at one end of the pushing plate.

7. The advancing and retreating type heat treatment equipment monitoring device according to claim 6, wherein: The length of the rack is slightly less than the length of the inlet / outlet channel.

Images