Optical temperature measurement auxiliary device and sintering furnace
By designing optical temperature measurement auxiliary devices in the sintering furnace, and using isolation lenses and purge cleaning fixtures to clean the lenses during operation, the problem of optical thermometer pollution is solved and the temperature measurement accuracy and working efficiency are improved.
Patent Information
- Application Number
- CN202411500362.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2024-12-27
AI Technical Summary
In high-temperature sintering furnaces, the lenses of the optical thermometer are easily contaminated by impurities and oil waxes, resulting in inaccurate temperature measurement. The prior art needs to be removed and cleaned after the sintering furnace is completed, which affects efficiency and is difficult to operate.
An optical temperature measurement auxiliary device is designed, including an optical temperature measurement fixing frame, alignment fine adjustment rod, clamp cover, isolation lens and purge cleaning fixing seat. The isolation lens is used to block impurities and clean through the air inlet and wipe holes. , avoid disassembly of the optical thermometer and realize cleaning of the lens during operation.
It effectively prevents impurities from adhering to the optical thermometer lens, reduces temperature measurement errors, and cleans the lens without affecting the operation of the sintering furnace, improving working efficiency.
Smart Images
Figure CN119197132A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sintering furnaces, and in particular to an optical temperature measurement auxiliary device and a sintering furnace. Background Art
[0002] The temperature inside a high-temperature sintering furnace is very high, and an optical thermometer is generally used to measure the temperature of the hot zone inside the sintering furnace. The lens of the optical thermometer is located in the vacuum chamber of the sintering furnace. During the vacuuming and heating process, impurities, oil wax, etc. on the surface of the heated object will accumulate on the optical temperature measuring lens, causing contamination of the optical temperature measuring lens and resulting in inaccurate temperature measurement. The prior art generally removes the optical thermometer after the sintering furnace is completed, and then cleans the lens. This cleaning method is more troublesome and affects work efficiency. The most important thing is that it requires secondary focusing and alignment, which is more difficult for operators. Summary of the invention
[0003] In view of this, it is necessary to provide an optical temperature measurement auxiliary device that can clean the lens without affecting the operation of the sintering furnace and does not require secondary focusing, thereby improving the working efficiency of the sintering furnace.
[0004] It is also necessary to provide a sintering furnace equipped with an optical temperature measurement auxiliary device.
[0005] An optical temperature measurement auxiliary device includes an optical temperature measurement fixing frame, an alignment fine-tuning rod, a clamping cover, an isolation lens, and a purging and cleaning fixing seat. The optical temperature measurement fixing frame is provided with a mounting hole in the center to install an optical thermometer, and a connecting hole is provided at the edge of the optical temperature measurement fixing frame. One end of the alignment fine-tuning rod is sleeve-connected with the optical temperature measurement connecting hole, and the other end of the alignment fine-tuning rod is connected to the clamping cover. A through hole is provided in the center of the clamping cover to facilitate the optical thermometer to measure the temperature in the furnace. The isolation lens is fixed between the clamping cover and the purging and cleaning fixing seat. An observation channel is provided in the center of the purging and cleaning fixing seat to facilitate the optical thermometer to measure the temperature in the furnace. The side wall of the purging and cleaning fixing seat is provided with an air inlet and a wiping hole to facilitate the purging and cleaning lens.
[0006] Preferably, both ends of the alignment fine-tuning rod are provided with external threads, and both ends of the optical temperature measurement fixing frame are fixed by nuts.
[0007] Preferably, a first annular groove is provided on the edge of the through hole of the clamping cover, and the diameter of the first annular groove is the same as the diameter of the isolation lens. Correspondingly, a second annular groove with the same diameter as the isolation lens is provided on one side of the purge and cleaning fixing seat adjacent to the isolation lens, and the isolation lens is clamped between the first annular groove and the second annular groove, a through hole is provided on the edge of the clamping cover, and the purge and cleaning fixing seat is provided with a threaded hole, and the clamping cover and the purge and cleaning fixing seat are fixed by bolts.
[0008] Preferably, the air inlet hole is located at the top of the observation channel, and the air inlet hole is adjacent to the isolation lens and is arranged in the radial direction of the observation channel.
[0009] Preferably, a sewage discharge hole is provided at the bottom of the purging and cleaning fixing seat to facilitate the removal of impurities after purging.
[0010] Preferably, the wiping hole is located at the bottom of the observation channel, the wiping hole is adjacent to the isolation lens and is inclined with respect to the observation channel.
[0011] A sintering furnace equipped with an optical temperature measurement auxiliary device comprises an observation hole, an optical temperature measurement auxiliary device, a ferrule, and an optical temperature measuring tube. The observation hole is fixedly connected to the optical temperature measurement auxiliary device, the ferrule is sleeved with the observation hole, one end of the optical temperature measuring tube is sleeved with the ferrule, and the other end of the optical temperature measuring tube extends into a hot zone.
[0012] Preferably, a positioning boss is provided at one end of the purging and cleaning fixing seat away from the isolation lens, and correspondingly, a positioning groove is provided on the end surface of the observation hole, and the positioning boss is engaged and connected with the positioning groove.
[0013] Beneficial effect: When the optical thermometer is installed on the optical temperature measurement auxiliary device of the present invention for temperature measurement, impurities, oil wax, etc. in the sintering furnace will not adhere to the lens of the optical thermometer, but will adhere to the isolation lens under the blocking effect of the isolation lens. When the isolation lens needs to be cleaned, the air inlet is opened for blowing or the wiping hole is opened for wiping according to the situation. The optical thermometer does not need to be removed during the cleaning process, so secondary focusing is not required. The temperature measurement error is relatively small while not affecting the operation of the sintering furnace. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic structural diagram of a preferred angle of the optical temperature measurement auxiliary device of the present invention.
[0015] Figure 2 FIG. 4 is a schematic structural diagram of the optical temperature measurement auxiliary device of the present invention from another preferred angle.
[0016] Figure 3 It is a cross-sectional view of the optical temperature measurement auxiliary device of the present invention.
[0017] Figure 4 It is a schematic diagram of the specific structure of the sintering furnace of the present invention.
[0018] In the figure: an optical temperature measurement auxiliary device 10, an optical temperature measurement fixing frame 20, a mounting hole 201, a connecting hole 202, an alignment fine-tuning rod 30, a clamping cover 40, a first annular groove 401, an isolation lens 50, a purge and cleaning fixing seat 60, an observation channel 601, an air inlet hole 602, a wiping hole 603, a positioning boss 604, an observation hole 70, a ferrule 80, and an optical temperature measurement tube 90. DETAILED DESCRIPTION
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Please see Figures 1 to 3 An optical temperature measurement auxiliary device 10 includes an optical temperature measurement fixing frame 20, an alignment fine-tuning rod 30, a clamping cover 40, an isolation lens 50, and a purging and cleaning fixing seat 60. The center of the optical temperature measurement fixing frame 20 is provided with a mounting hole 201 for installing an optical thermometer. The edge of the optical temperature measurement fixing frame 20 is provided with a connecting hole. One end of the alignment fine-tuning rod 30 is sleeved and connected with the optical temperature measurement connecting hole. The other end of the alignment fine-tuning rod 30 is connected with the clamping cover 40. A through hole is provided in the center of the clamping cover 40 to facilitate the optical thermometer to measure the temperature in the furnace. The isolation lens 50 is fixed between the clamping cover 40 and the purging and cleaning fixing seat 60. The center of the purging and cleaning fixing seat 60 is provided with an observation channel 601 to facilitate the optical thermometer to measure the temperature in the furnace. The side wall of the purging and cleaning fixing seat 60 is provided with an air inlet hole 602 and a wiping hole 603 to facilitate purging and cleaning the lens.
[0021] The optical temperature measurement fixing frame 20 of the present invention is used to fix the optical temperature meter so that the lens of the optical temperature meter faces the observation hole 70 of the sintering furnace.
[0022] The alignment fine-tuning rod 30 of the present invention is used to adjust the distance between the optical thermometer and the hot zone so that the focal length of the lens of the optical thermometer is aligned with the hot zone.
[0023] In a preferred embodiment, both ends of the alignment fine-adjustment rod 30 are provided with external threads, and both ends of the optical temperature measurement fixing frame 20 are fixed by nuts. After the focal length of the lens of the optical thermometer is aligned, the two ends of the alignment fine-adjustment rod 30 are clamped to the optical temperature measurement fixing frame 20 by nuts to fix its position.
[0024] The clamping cover 40 of the present invention is used to cooperate with the purge cleaning fixing seat 60 to clamp the isolation lens 50. At the same time, the clamping cover 40 also plays a role in fixing the alignment fine-tuning rod 30, so that the alignment fine-tuning rod 30 remains horizontal, thereby enabling the optical thermometer to move along the axial direction of the observation channel 601 during the fine-tuning process.
[0025] In a preferred embodiment, a first annular groove 401 is provided at the edge of the through hole of the clamping cover 40, and the diameter of the annular groove is the same as the diameter of the isolation lens 50. Correspondingly, a second annular groove with the same diameter as the isolation lens 50 is provided on a side of the purge and cleaning fixing seat 60 adjacent to the isolation lens 50, and the isolation lens 50 is clamped between the first annular groove 401 and the second annular groove, a through hole is provided at the edge of the clamping cover 40, and the purge and cleaning fixing seat 60 is provided with a threaded hole, and the clamping cover 40 and the purge and cleaning fixing seat 60 are fixed by bolts.
[0026] In this way, when the isolation lens 50 is scratched due to long-term use, thereby affecting transparency, the isolation lens 50 can be replaced by removing the clamping cover 40. The first annular groove 401 and the second annular groove can just hold the isolation lens 50 without excessively squeezing the isolation lens 50 and breaking it.
[0027] The purge cleaning fixing seat 60 of the present invention is used to fix and clean the isolation lens 50. The space of the purge cleaning fixing seat 60 is relatively closed, and the heat in the sintering furnace is not easy to dissipate through the purge cleaning fixing seat 60, thereby causing uneven temperature in the hot zone. Normally, the air inlet 602 and the wiping hole 603 are in a closed state to reduce heat loss. When cleaning is required, the air inlet 602 or the wiping hole 603 is opened.
[0028] In a preferred embodiment, the air inlet 602 is located at the top of the observation channel 601, adjacent to the isolation lens 50 and arranged in the radial direction of the observation channel 601. In this way, the air is blown from top to bottom, using the pressure of the air flow and the gravity of the material itself. At the same time, the friction force on the dirt is also smaller, making it easier to blow away the dirt on the surface of the lens.
[0029] In a preferred embodiment, a drainage hole is provided at the bottom of the purging and cleaning fixing seat 60 to facilitate the removal of impurities after purging. In this way, the impurities can be discharged from the drainage hole and will not be retained in the observation channel 601 to cause secondary contamination to the lens.
[0030] In a preferred embodiment, the wiping hole 603 is located at the bottom of the observation channel 601, and the wiping hole 603 is adjacent to the isolation lens 50 and is inclined with respect to the observation channel 601. The wiping tool passes through the wiping hole 601 to wipe the isolation lens. Of course, when the lens is purged, the wiping hole 603 can also be opened to allow the dirt to flow away from the wiping hole 603.
[0031] In addition, the present invention also provides a sintering furnace equipped with an optical temperature measurement auxiliary device 10 .
[0032] Please see Figure 4A sintering furnace equipped with an optical temperature measurement auxiliary device 10 includes an observation hole 70, an optical temperature measurement auxiliary device 10, a ferrule 80, and an optical temperature measuring tube 90. The observation hole 70 is fixedly connected to the optical temperature measurement auxiliary device 10, the ferrule 80 is sleeved and connected to the observation hole 70, one end of the optical temperature measuring tube 90 is sleeved and connected to the ferrule 80, the inner wall of the optical temperature measuring tube 90 is smooth, and the other end of the optical temperature measuring tube 90 extends into the hot zone.
[0033] When light passes through the heat shield, the furnace, and the observation hole 70 to reach the optical thermometer, it will be diffusely reflected, resulting in light loss and light interference, and temperature detection is prone to errors. By setting the optical temperature measuring tube 90, light loss and light interference can be reduced, making the detection result more accurate.
[0034] Furthermore, a positioning boss 604 is provided at one end of the purging and cleaning fixing seat 60 away from the isolation lens 50 , and correspondingly, a positioning groove is provided on the end surface of the observation hole 70 , and the positioning boss 604 is engaged and connected with the positioning groove.
[0035] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.
Claims
1. An optical temperature measurement auxiliary device, characterized in that: It includes an optical temperature measurement fixing frame, an alignment fine-tuning rod, a clamping cover, an isolation lens, and a purging and cleaning fixing seat. The center of the optical temperature measurement fixing frame is provided with a mounting hole for installing the optical thermometer, the edge of the optical temperature measurement fixing frame is provided with a connecting hole, one end of the alignment fine-tuning rod is sleeve-connected with the optical temperature measurement connecting hole, the other end of the alignment fine-tuning rod is connected with the clamping cover, the center of the clamping cover is provided with a through hole for the optical thermometer to measure the temperature in the furnace, the isolation lens is fixed between the clamping cover and the purging and cleaning fixing seat, the center of the purging and cleaning fixing seat is provided with an observation channel for the optical thermometer to measure the temperature in the furnace, and the side wall of the purging and cleaning fixing seat is provided with an air inlet and a wiping hole for the purging and cleaning lens.
2. The optical temperature measurement auxiliary device according to claim 1, characterized in that: External threads are arranged at two ends of the alignment fine-tuning rod, and two ends of the optical temperature measurement fixing frame are fixed by nuts.
3. The optical temperature measurement auxiliary device according to claim 1, characterized in that: A first annular groove is provided on the edge of the through hole of the clamping cover, and the diameter of the first annular groove is the same as the diameter of the isolation lens. Correspondingly, a second annular groove with the same diameter as the isolation lens is provided on one side of the purging and cleaning fixing seat adjacent to the isolation lens, and the isolation lens is clamped between the first annular groove and the second annular groove. A through hole is provided on the edge of the clamping cover, and the purging and cleaning fixing seat is provided with a threaded hole. The clamping cover and the purging and cleaning fixing seat are fixed by bolts.
4. The optical temperature measurement auxiliary device according to claim 1, characterized in that: The air inlet hole is located at the top of the observation channel, is adjacent to the isolation lens and is arranged in the radial direction of the observation channel.
5. The optical temperature measurement auxiliary device according to claim 4, characterized in that: The bottom of the purging and cleaning fixing seat is provided with a sewage discharge hole to facilitate the discharge of impurities after purging.
6. The optical temperature measurement auxiliary device according to claim 1, characterized in that: The wiping hole is located at the bottom of the observation channel, and the wiping hole is adjacent to the isolation lens and is inclined with respect to the observation channel.
7. A sintering furnace equipped with the optical temperature measurement auxiliary device according to any one of claims 1 to 6, characterized in that: It includes an observation hole, an optical temperature measurement auxiliary device, a ferrule, and an optical temperature measurement tube. The observation hole is fixedly connected to the optical temperature measurement auxiliary device, the ferrule is sleeved with the observation hole, one end of the optical temperature measurement tube is sleeved with the ferrule, and the other end of the optical temperature measurement tube extends into the hot zone.
8. The optical temperature measurement auxiliary device according to claim 7, characterized in that: A positioning boss is provided at one end of the purging and cleaning fixing seat away from the isolation lens, and correspondingly, a positioning groove is provided on the end surface of the observation hole, and the positioning boss is engaged and connected with the positioning groove.