Infrared temperature measuring assembly with power wrench
By using an infrared temperature measurement component with an assist wrench and an inert gas purging system, the problem of contamination of infrared thermometers in high-temperature vacuum furnaces was solved, achieving high-precision temperature measurement and high-quality sintering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG NORTH TRUE VACUUM TECH
- Filing Date
- 2025-10-17
- Publication Date
- 2026-07-21
Smart Images

Figure CN224535237U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum furnace technology, specifically to an infrared temperature measuring component with a power-assisted wrench. Background Technology
[0002] In high-temperature vacuum sintering furnaces, infrared thermometers are commonly used and highly accurate high-temperature measuring components. However, the accuracy of infrared thermometers is significantly affected by the surrounding environment, including dust and steam. When sintering powder compacts and other products, the thermal environment of the high-temperature vacuum sintering furnace inevitably generates steam, dust, and other volatile pollutants. These environmental factors interfere with the infrared thermometer's measurements, affecting the results. Even with the addition of an inert gas purging system, the cleaning effect is limited. Incorrect temperature measurements are fed back to the control system, affecting the temperature control accuracy of the equipment and consequently the sintering quality of the product. Therefore, designing an infrared thermometer component that is both resistant to contamination and capable of cleaning contaminants is of significant practical importance. Utility Model Content
[0003] The purpose of this invention is to provide an infrared temperature measuring component with an assist wrench to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an infrared temperature measurement component with an assistive wrench, comprising an infrared thermometer, an infrared window, a mounting base, a dust blowing component, and an assistive wrench. The mounting base is installed on the furnace body connecting pipe, and a pressure cap is installed on the mounting base. The infrared window is clamped between the mounting base and the pressure cap. The mounting base integrates a dust blowing connector, an assistive wrench, and an infrared thermometer. The infrared window is made of transparent glass, and the smoothness of its surface directly affects the temperature measurement accuracy of the thermometer. Furthermore, dust, vapor, and other pollutants in the sintering furnace inevitably enter the radiation path through the connection points of the pipe components. If they adhere to the infrared window, they will affect the temperature measurement accuracy. By controlling the dust blowing operation of the dust blowing connector, the accumulation of pollutants on the infrared window is reduced. When there are many pollutants, the assistive wrench pushes the infrared window to clean the surface for mechanical dust removal.
[0005] Preferably, the inner side of the infrared window is pressed with a sealing element, the soft material of which can scrape off contaminants on the infrared window without scratching its surface.
[0006] Preferably, the assist wrench has a T-shaped structure, and its mirror structure is not restricted by direction when pushing the infrared window, and the infrared window can be pushed from either side.
[0007] Preferably, the end of the push-rotating head of the power wrench is wrapped with polyurethane, which is soft and transparent, and can effectively avoid damaging the infrared window and causing vacuum leakage when pushing.
[0008] Preferably, the pressure cap is installed on the fixing seat by a threaded connection, wherein the exposed metal part of the bolt is covered with a soft anti-collision rubber sleeve to prevent the infrared window from being cracked due to contact and causing vacuum leakage.
[0009] Preferably, the bolts of the pressure cap and the fixing seat are distributed on both sides of the window to provide a limiting and guiding function for the movement of the infrared window.
[0010] Preferably, a support screw is installed on the fixed base, and the infrared thermometer is installed on the support screw through a triangular fixing plate. Each support screw is fitted with a compression spring for auxiliary fastening, and the compression spring is installed inside the triangular fixing plate to provide pre-tightening force to prevent the connection from loosening. At the same time, the distance between the infrared thermometer and the infrared window can be adjusted by rotating the hand-tightening nut to adjust the length of the spring.
[0011] Preferably, the fixing seat and the furnace body connecting pipe are connected by hook bolts. The furnace body connecting pipe is an ISO vacuum standard loose-fitting connecting pipe. The fixing seat can be directly connected to it by hook bolts, eliminating the use of transition flanges and requiring only one seal, which improves the reliability of the seal.
[0012] Compared with existing technologies, the advantages of this invention are: an infrared temperature measuring component with an assist wrench can be used for temperature measurement in a vacuum sintering furnace at high temperatures. During the sintering process, the operator can use the assist wrench to reciprocate the infrared glass window, thereby removing contaminants from the window surface. Simultaneously, an inert gas purging system cleans contaminants from the environment near the inside of the window, ensuring a clean infrared window surface, accurate temperature measurement, and improved sintered product quality. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a cross-sectional view of the present invention.
[0015] In the diagram: 1. Hook bolt; 2. Furnace body connecting pipe; 3. Fixing base; 4. Light-transmitting pipe; 5. Infrared window; 6. Seal; 7. Anti-collision rubber sleeve; 8. Assist wrench; 9. Compression spring; 10. Triangular fixing plate; 11. Support screw; 12. Infrared thermometer; 13. Pressure cap; 14. Dust blowing connector; 15. Solenoid valve. Detailed Implementation
[0016] 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.
[0017] Please see Figure 1-2 This utility model provides a technical solution: an infrared temperature measurement component with an assist wrench, including an infrared thermometer 12, an infrared window 5, a fixed base 3, a dust blowing connector 14, a pressure cap 13, and an assist wrench 8. The fixed base 3 is installed on the furnace body pipe and has multiple mounting holes integrated thereon. Other functional components can be installed on the fixed base 3. The pressure cap 13 is installed on the fixed base 3 by a threaded connection. The infrared window 5 is clamped between the fixed base 3 and the pressure cap 13. The dust blowing connector 14, the assist wrench 8, and the infrared thermometer 12 are integrated and installed on the fixed base 3. The heat field inside the furnace emits infrared radiation, which passes through the closed light-transmitting pipe 4 and through the infrared window 5, and is received and processed by the infrared thermometer 12.
[0018] The infrared window 5 is made of transparent glass, and the smoothness of its surface has a direct impact on the temperature measurement accuracy of the infrared thermometer 12. Dust, steam and other pollutants in the sintering furnace will inevitably enter the radiation path through the connection of the pipe fittings. If they adhere to the infrared window 5, they will affect the temperature measurement accuracy.
[0019] The dust blowing connector 14 is equipped with a solenoid valve 15 and is connected to an inert gas source through an air pipe. The operator can directly control the dust blowing operation by operating the control panel of the inert gas blowing system, thereby reducing the accumulation of pollutants on the infrared window 5.
[0020] When there are many contaminants on the infrared window 5, the operator can use the power wrench 8 to push the infrared window 5 left and right to clean the surface mechanically to remove dust. The inner side of the infrared window 5 is pressed with a sealing element 6, which includes a sealing ring and a nylon part. The nylon part is a nylon gasket, and the sealing ring is a vacuum sealing ring. Its soft material can scrape off the contaminants on the infrared window 5 without scratching its surface.
[0021] The power wrench 8 has a T-shaped structure, and its mirror structure is not restricted by direction when pushing the infrared window 5, so the infrared window 5 can be pushed from either side.
[0022] The end of the push-rotating head of the power wrench 8 is wrapped with polyurethane. Its soft and transparent material can effectively prevent damage to the infrared window 5 and vacuum leakage when pushing.
[0023] The infrared window 5 is clamped between the fixed base 3 and the pressure cover 13. In order to achieve a vacuum seal inside the furnace, the infrared window 5 needs a large clamping force to compress the sealing element 6 to achieve the sealing effect. Therefore, the pushing of the infrared window 5 requires a large pushing force. The designed assist wrench 8 has a T-shaped lever structure, which makes the pushing of the infrared window 5 easier and more effortless.
[0024] The pressure cap 13 is installed on the fixing seat 3 by threaded connection. The exposed metal part of the bolt is covered with a soft anti-collision rubber sleeve 7 to prevent the infrared window 5 from being cracked due to contact and causing vacuum leakage.
[0025] The mounting screws of the pressure cap 13 and the fixing base 3 are distributed on both sides of the infrared window 5, providing a limiting and guiding function for the movement of the infrared window 5.
[0026] Support screws 11 are installed on the mounting base 3. The three support screws 11 form a triangular support structure, which is stable and reliable. The infrared thermometer 12 is mounted on the support screws 11 through the triangular fixing plate. Compression springs 9 are fitted on the support screws 11 to assist in fastening. The compression springs 9 are installed inside the fixing plate to provide pre-tightening force to prevent the connection from loosening. At the same time, the distance between the infrared thermometer 12 and the infrared window 5 can be adjusted by rotating the hand-tightening nut to adjust the length of the compression springs 9.
[0027] The fixed seat 3 is connected to the furnace body pipe by hook bolt 1. The furnace body pipe is an ISO vacuum standard loose pipe. The fixed seat 3 can be directly connected to it by hook bolt 1, eliminating the need for a transition flange and requiring only one seal, which improves the reliability of the seal.
[0028] Working principle: When pollutants accumulate on the infrared window 5, the opening of the solenoid valve 15 allows inert gas to be connected to the inert gas source through the air pipe. The operator can directly control the dust blowing operation by operating the control panel to reduce the accumulation of pollutants on the infrared window 5. When there are many contaminants on the infrared window 5, the operator can use the power wrench 8 to push the infrared window 5 left and right to remove surface contaminants for mechanical dust removal. The softer material of the seal 6 can also scrape off the contaminants on the infrared window without scratching the glass surface.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An infrared temperature measuring assembly with an assist wrench, comprising an infrared thermometer, an infrared window, a mounting base, a dust blowing connector, and an assist wrench, characterized in that: The mounting base is installed on the furnace body connecting pipe. A pressure cap is installed on the mounting base. An infrared viewing window is clamped between the mounting base and the pressure cap. A dust blowing connector, a power-assisted wrench, and an infrared thermometer are integrated on the mounting base. By controlling the dust blowing operation of the dust blowing connector, the accumulation of pollutants on the infrared viewing window is reduced. When there are many pollutants, the surface of the infrared viewing window is cleaned by pushing the power-assisted wrench to remove dust mechanically.
2. The infrared temperature measuring component with an assist wrench according to claim 1, characterized in that: A seal is pressed against the inside of the infrared window.
3. The infrared temperature measuring component with an assist wrench according to claim 1, characterized in that: The assist wrench is designed with a T-shaped structure, and its mirror structure is not restricted by direction when pushing the infrared window, allowing the infrared window to be pushed from either side.
4. The infrared temperature measuring component with an assist wrench according to claim 3, characterized in that: The end of the push-rotating head of the power wrench is wrapped with polyurethane.
5. The infrared temperature measuring assembly with an assist wrench according to claim 1, characterized in that: The gland is installed on the fixed base by a threaded connection, and the exposed metal part of the bolt is covered with an anti-collision rubber sleeve.
6. The infrared temperature measuring assembly with an assist wrench according to claim 5, characterized in that: The bolts of the pressure cap and the fixing seat are distributed on both sides of the infrared window to limit the movement of the infrared window.
7. The infrared temperature measuring assembly with an assist wrench according to claim 6, characterized in that: The mounting base is equipped with a support screw, and the infrared thermometer is mounted on the support screw via a triangular fixing plate. Each support screw is fitted with a compression spring for additional fastening.
8. The infrared temperature measuring assembly with an assist wrench according to claim 1, characterized in that: The mounting base is connected to the furnace body pipe using hook bolts.