Oxygen blocking device of heating system

Abstract

The invention relates to the technical field of heating systems, and discloses an oxygen blocking device of a heating system, and the oxygen blocking device of the heating system can synchronously complete all key actions by pressing an upper pressing plate and a lower pressing plate with two hands respectively. The pressing operation directly drives the sliding sleeve to linearly slide down, linear motion is converted into rotation of the linkage disc through cooperation of an arc-shaped groove in the sliding sleeve and a guide block, then the shifting rod and the sliding block are pushed through the shifting groove to compress the spring, and finally axial force is amplified through the supporting rod and converted into radial pressing force of the pushing ring on the sealing sleeve, so that sealing is achieved. Meanwhile, the same pressing action also forces the upper connecting plate and the lower connecting plate to be attached, embedding of the hinge block and sliding-in self-locking of the locking block are completed, and the whole process is linearized and synchronized, so that establishment of the sealing effect and completion of mechanical locking are almost carried out at the same time, the operation procedure is greatly simplified, the installation time is shortened, and the installation efficiency is improved. And the requirement for professional skills of operators is lowered, and the device is particularly suitable for on-site rapid construction.

Description

Technical Field

[0001] This invention relates to the field of heating system technology, specifically to an oxygen barrier device for heating systems. Background Technology

[0002] The core purpose of oxygen barrier in heating equipment is to fundamentally prevent the continuous corrosive damage caused by oxygen to the entire system. Once oxygen dissolves in circulating hot water and flows with it, it undergoes a slow and irreversible electrochemical oxidation reaction with metal components, especially steel and aluminum, in pipes, valves, heat exchangers, pumps, and even the boiler itself. This not only gradually corrodes the metal, leading to perforations and leaks, but the resulting rust and impurities also clog precision pipes and heat dissipation terminals with the water flow, severely weakening heat exchange efficiency and increasing the operating load on the equipment. More importantly, the presence of oxygen provides a breeding ground for various anaerobic microorganisms, and the biological slime they form further exacerbates the deposition of dirt and localized corrosion inside the system. Therefore, by effectively blocking oxygen intrusion, we can not only significantly extend the service life of all critical components of the entire heating system, but also maintain its efficient and stable operating performance for a long time, and minimize the high costs and inconvenience caused by maintenance and cleaning.

[0003] In existing technologies for underfloor heating manifolds, the connection between the coils and valves typically relies solely on PTFE tape or simple sealant for static sealing. This approach has several inherent drawbacks. First, during installation and sealing, traditional sealing methods often depend on the installer's personal experience and feel for tightening threaded joints, lacking objective and standardized tightening standards. This can easily lead to inadequate sealing due to insufficient tightening force, or damage to the threads due to excessive force, creating potential leakage hazards for long-term system operation. Second, regarding long-term reliability, the continuous vibration and thermal stress cycles generated during system operation prevent traditional static sealing structures from adaptively compensating. Material creep or stress relaxation can cause a decrease in pre-tightening force, resulting in a decline in sealing effectiveness over time and a significant increase in the risk of oxygen permeation. More importantly, existing structures generally lack effective secondary locking mechanisms. Tightened joints may loosen under accidental contact or pipe stress, further compromising the seal integrity. Furthermore, when maintenance is required, corroded or overly tight threaded connections are often difficult to disassemble, sometimes even necessitating pipe cutting, which is cumbersome and costly. Therefore, existing technologies have significant shortcomings throughout their entire lifecycle, from installation and long-term stability to maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide an oxygen barrier device for a heating system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an oxygen-blocking device for a heating system, comprising an inlet pipe, an inlet pipe, and a distribution pipe, wherein the inlet pipe, the inlet pipe, and the distribution pipe are connected by a pipe connector, a plug is provided at the end of the distribution pipe away from the inlet pipe, a distribution valve is provided on the distribution pipe, and a floor heating coil is provided below the distribution valve, with a bend protective sleeve fitted at the bend of the floor heating coil; further comprising a protective component for increasing the sealing of the connection between the floor heating coil and the distribution valve to prevent oxygen from entering through the connection; and a reinforcing component for cooperating with the protective component to improve the stability of the protective component; the protective component includes a sealing sleeve, wherein... The sealing sleeve is fitted at the connection between the underfloor heating coil and the water distribution valve. The top of the underfloor heating coil is fitted with a sleeve, and a fixed post is fixedly connected to the inner side of the sleeve. A sliding sleeve is fitted to the outer side of the sleeve, and an arc-shaped groove is formed on the inner side of the sliding sleeve. A linkage plate is rotatably connected to the inner side of the fixed post, and a turning groove is formed on the top surface of the linkage plate. A fixed plate is fixedly connected to the inner side of the sleeve, and a sliding groove is formed on the surface of the fixed plate. A slider is slidably connected to the inner side of the sliding groove. A support rod is inserted into and hinged to the inner side of the slider. A push ring is inserted into and hinged to the end of the support rod away from the slider. The push ring is fitted on the outer side of the sealing sleeve and fixedly connected to the sealing sleeve.

[0006] Preferably, the sliding sleeve is connected to an upper connecting plate through and fixedly connected to it, and upper pressure plates are fixedly connected to both sides of the upper connecting plate.

[0007] Preferably, a guide rod is fixedly connected to the inner side of the slide groove, and the guide rod passes through the slider and is slidably connected to the slider.

[0008] Preferably, a spring is sleeved on the outer side of the guide rod, one end of the spring is fixedly connected to the inner side of the slide groove, and the other end of the spring is fixedly connected to the surface of the slider.

[0009] Preferably, a lever is fixedly connected to the bottom of the slider, and the bottom end of the lever is inserted into the actuation groove.

[0010] Preferably, a guide block is fixedly connected to the side of the linkage disc, and a movable groove is provided on the outer side of the sleeve. The guide block passes through the movable groove and is inserted into the arc-shaped groove opened on the inner side of the sliding sleeve.

[0011] Preferably, the reinforcing component includes a lower connecting plate, with lower pressure plates fixedly connected to both sides of the lower connecting plate, a hinge block fixedly connected to the bottom of the upper connecting plate, a hinge rod inserted into and hinged to the bottom of the hinge block, and a locking block inserted into and hinged to the end of the hinge rod away from the hinge block.

[0012] Preferably, the top surface of the lower connecting plate is provided with a fitting groove, the shape of which is the same as that of the hinge block, and the top surface of the lower connecting plate is provided with a connecting groove.

[0013] Preferably, the connecting groove is connected to the fitting groove, and the locking block is located inside the connecting groove.

[0014] Preferably, the top surface of the lower pressure plate is fixedly connected to an elastic hook, the top of the elastic hook is fixedly connected to an extrusion plate, and the surface of the upper pressure plate is provided with a locking hole, which is aligned with the elastic hook.

[0015] Compared with the prior art, the present invention provides an oxygen barrier device for a heating system, which has the following beneficial effects: 1. The oxygen barrier device in this heating system allows all key actions to be completed simultaneously by pressing the upper and lower pressure plates with both hands. This pressing operation directly drives the sliding sleeve to slide linearly downwards. Through the cooperation of its internal arc groove and guide block, the linear motion is converted into the rotation of the linkage disc. This, in turn, pushes the lever and slider to compress the spring through the actuating groove. Finally, the axial force is amplified by the support rod and converted into the radial clamping force of the pushing ring on the sealing sleeve, achieving a seal. At the same time, the same pressing action also forces the upper and lower connecting plates to fit together, completing the engagement of the hinge block and the sliding self-locking of the locking block. Finally, the locking completion signal is sent through the engagement of the elastic hook and the locking hole. The linearity and synchronicity of the entire process mean that the establishment of the sealing effect and the completion of mechanical locking occur almost simultaneously, greatly simplifying the operation procedure, shortening the installation time, and reducing the professional skills required of the operators, making it particularly suitable for rapid on-site construction.

[0016] 2. The oxygen barrier device in this heating system, after the upper and lower connecting plates are fully fitted by pressing, triggers the reinforcing components simultaneously: First, the hinge block embeds into the fitting groove, achieving initial longitudinal positioning and limitation; then, the hinge rod, moving downwards with the hinge block, pushes the locking block completely into the interior of the connecting groove, forming a horizontal mechanical self-locking mechanism, effectively preventing the hinge block from dislodging from the fitting groove due to vibration or external force; simultaneously, the elastic hook on the lower pressure plate rebounds after being deformed under pressure, its head firmly locking into the locking hole of the upper pressure plate, forming a third lateral constraint. This triple locking mechanism works together to firmly maintain the sliding sleeve in the working position after pressing, thereby indirectly and persistently maintaining a constant clamping force of the push ring on the sealing sleeve. This design effectively resists vibrations and stress changes that may occur during pipeline system operation, preventing seal failure due to component loosening, ensuring the long-term effectiveness of the oxygen barrier and the reliability of the entire underfloor heating system.

[0017] 3. The oxygen barrier device in this heating system allows the elastic hook to deform and disengage from the upper pressure plate by pinching the compression plate at the top of the elastic hook, thus releasing the lateral locking constraint. Once the hook separates, there is no longer any locking force between the upper and lower connecting plates, allowing workers to easily separate the upper connecting plate, along with the protective components, from the lower connecting plate. This process is direct, quick, and causes no damage to components. This user-friendly design eliminates the hassle of complex disassembly operations in confined spaces, greatly simplifies maintenance procedures, reduces downtime, lowers long-term maintenance costs, and significantly facilitates the periodic maintenance and troubleshooting of the underfloor heating system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention; Figure 5 This is a schematic diagram of the protective component structure of the present invention; Figure 6 This is a schematic diagram of the connection structure between the coil and the protective assembly of the present invention; Figure 7 This is a schematic diagram of the internal structure of the protective component of the present invention.

[0019] In the diagram: 1. Inlet pipe one; 4. Inlet pipe two; 5. Branch pipe; 6. Branch valve; 7. Plug; 8. Underfloor heating coil; 9. Bend protection sleeve; 2. Protective components; 21. Sealing sleeve; 22. Sleeve; 23. Fixing post; 24. Sliding sleeve; 25. Upper connecting plate; 26. Upper pressure plate; 27. Arc groove; 28. Push ring; 29. ​​Fixing plate; 210. Sliding groove; 211. Sliding block; 212. Support rod; 213. Toggle rod; 214. Guide rod; 215. Spring; 216. Linkage plate; 217. Actuating groove; 218. Movable groove; 219. Guide block; 3. Reinforcing components; 31. Lower connecting plate; 32. Lower pressure plate; 33. Elastic hook; 34. Fitting groove; 35. Connecting groove; 36. Hinge block; 37. Hinge rod; 39. Locking block; 310. Locking hole; 311. Extrusion plate. Detailed Implementation

[0020] like Figure 1-7As shown, the present invention provides a technical solution: an oxygen-blocking device for a heating system, comprising an inlet pipe 1, an inlet pipe 4, and a distribution pipe 5. The inlet pipe 1, the inlet pipe 4, and the distribution pipe 5 are connected by a pipe connector. A plug 7 is provided at the end of the distribution pipe 5 away from the inlet pipe 4. A distribution valve 6 is provided on the distribution pipe 5. A floor heating coil 8 is provided below the distribution valve 6. A bend protection sleeve 9 is provided at the bend of the floor heating coil 8. The device also includes a protective component 2 for increasing the sealing of the connection between the floor heating coil 8 and the distribution valve 6 to prevent oxygen from entering through the connection. A reinforcing component 3 is used to cooperate with the protective component 2 to improve the stability of the protective component 2. The protective component 2 includes a sealing sleeve 21, which is fitted at the connection between the floor heating coil 8 and the distribution valve 6. The top of the underfloor heating coil 8 is fitted with a sleeve 22. A fixing post 23 is fixedly connected to the inner side of the sleeve 22. A sliding sleeve 24 is fitted to the outer side of the sleeve 22. An arc-shaped groove 27 is opened on the inner side of the sliding sleeve 24. A linkage disc 216 is rotatably connected to the inner side of the fixing post 23. A toggle groove 217 is opened on the top surface of the linkage disc 216. A fixing disc 29 is fixedly connected to the inner side of the sleeve 22. A sliding groove 210 is opened on the surface of the fixing disc 29. A slider 211 is slidably connected to the inner side of the sliding groove 210. A support rod 212 is inserted into and hinged to the inner side of the slider 211. A push ring 28 is inserted into and hinged to the end of the support rod 212 away from the slider 211. The push ring 28 is fitted on the outer side of the sealing sleeve 21 and fixedly connected to the sealing sleeve 21. The worker first places the protective component 2, fitted with the sealing sleeve 21, at the connection between the underfloor heating coil 8 and the water distribution valve 6, while simultaneously placing the lower connecting plate 31 and the lower pressure plate 32 of the reinforcing component 3 in appropriate positions below it. At this time, the sliding sleeve 24 of the protective component 2 is in an initially unlocked, free state. The worker then holds the upper pressure plate 26 and the lower pressure plate 32 with both hands, applying pressure towards the center. This operation produces two direct effects: firstly, the pressure from both hands forces the upper connecting plate 25 and the lower connecting plate 31 closer together and eventually into contact. During this process, the hinge block 36 fixed to the bottom of the upper connecting plate 25 descends and embeds into the fitting groove 34 on the top surface of the lower connecting plate 31, completing the initial longitudinal positioning.

[0021] A sliding sleeve 24 is connected to an upper connecting plate 25, and upper pressure plates 26 are fixedly connected to both sides of the upper connecting plate 25. A guide rod 214 is fixedly connected to the inner side of the sliding groove 210, and the guide rod 214 passes through the slider 211 and is slidably connected to the slider 211. A spring 215 is sleeved on the outer side of the guide rod 214, one end of the spring 215 is fixedly connected to the inner side of the sliding groove 210, and the other end of the spring 215 is fixedly connected to the surface of the slider 211. A lever 213 is fixedly connected to the bottom of the slider 211, and the bottom end of the lever 213 is inserted into the actuation groove 217. A guide block 219 is fixedly connected to the side of the linkage disc 216, and a movable groove 218 is opened on the outer side of the sleeve 22. The guide block 219 passes through the movable groove 218 and is inserted into the arc-shaped groove 27 opened on the inner side of the sliding sleeve 24. The downward movement of the sliding sleeve 24 is crucial for activating its sealing function. The arc-shaped groove 27 inside interacts with the guide block 219 fixed to the linkage disc 216. Since the linkage disc 216 is restricted to rotation, the linear motion of the sliding sleeve 24, passing through the inclined surface of the arc-shaped groove 27, forces the guide block 219 to move, thereby causing the linkage disc 216 to rotate. The top surface of the linkage disc 216 has a toggle groove 217, into which a lever 213 moves. The lever 213 drives the slider 211 to slide along the guide rod 214 within the groove 210 of the fixed disc 29, compressing the spring 215. The movement of the slider 211, through the hinged support rod 212, transmits force to the push ring 28. The strut 212 acts as a lever, converting the axial movement of the slider 211 into a radial compressive force on the push ring 28. The push ring 28 then contracts, forcefully pressing the sealing sleeve 21 inside it, causing the sealing sleeve 21 to undergo elastic deformation and tightly wrap the connection between the underfloor heating coil 8 and the water distribution valve 6, forming a reliable sealing barrier and effectively preventing oxygen from seeping in.

[0022] like Figure 3-4As shown, the reinforcing component 3 includes a lower connecting plate 31, with lower pressure plates 32 fixedly connected to both sides of the lower connecting plate 31. A hinge block 36 is fixedly connected to the bottom of the upper connecting plate 25. A hinge rod 37 is inserted into and hinged to the bottom of the hinge block 36, and a locking block 39 is inserted into and hinged to the end of the hinge rod 37 away from the hinge block 36. A fitting groove 34 is formed on the top surface of the lower connecting plate 31, and the shape of the fitting groove 34 is the same as that of the hinge block 36. A connecting groove 35 is formed on the top surface of the lower connecting plate 31. The connecting groove 35 communicates with the fitting groove 34, and the locking block 39 is located in the connecting groove 35. An elastic hook 33 is fixedly connected to the top surface of the lower pressure plate 32, and a pressing piece 311 is fixedly connected to the top of the elastic hook 33. A locking hole 310 is formed on the surface of the upper pressure plate 26, and the locking hole 310 is aligned with the elastic hook 33. When both hands press continuously until the upper connecting plate 25 and the lower connecting plate 31 are fully fitted, the locking function of the reinforcing component 3 is triggered simultaneously. The hinge rod 37 and the locking block 39 move as the hinge block 36 sinks. When the hinge block 36 is embedded in the bottom of the fitting groove 34, the locking block 39 slides into the interior of the connecting groove 35 under the action of the hinge rod 37, forming a horizontal mechanical self-locking to prevent the hinge block 36 from coming out. At the same time, the elastic hook 33 on the top of the lower pressure plate 32 is squeezed when it contacts the bottom surface of the upper pressure plate 26, and undergoes elastic deformation. When the upper pressure plate 26 descends to the designated position, the elastic hook 33 quickly engages in the locking hole 310 due to its own rebound force, marking the completion of the locking. The hinge rod 37 will then push the locking block 39 to lock the sealing sleeve 21. This locked state firmly maintains the downward position of the sliding sleeve 24, thereby indirectly maintaining the pressure on the sealing sleeve 21 and ensuring the long-term stability of the sealing effect. The entire operation is completed by pressing with both hands at once, achieving simultaneous sealing and locking, which is efficient and reliable. To release the limit, the elastic hook 33 is no longer hooked into the hole 310 by squeezing the squeezing plate 311, thus separating the upper connecting plate 25 and the lower connecting plate 31.

[0023] Working Principle: The operator first places the protective component 2, fitted with the sealing sleeve 21, at the connection between the underfloor heating coil 8 and the water distribution valve 6. Simultaneously, the lower connecting plate 31 and the lower pressure plate 32 of the reinforcing component 3 are positioned appropriately below it. At this time, the sliding sleeve 24 of the protective component 2 is in an initially unlocked, free state. The operator holds the upper pressure plate 26 and the lower pressure plate 32 with both hands, applying pressure towards the center. This operation produces two direct effects: First, the pressure from both hands forces the upper connecting plate 25 and the lower connecting plate 31 closer together and eventually into contact. During this process, the hinge block 36 fixed to the bottom of the upper connecting plate 25 descends and embeds into the fitting groove 34 on the top surface of the lower connecting plate 31, completing the initial longitudinal positioning. Second, since the upper connecting plate 25 and the sliding sleeve 24 are fixedly connected, when the upper connecting plate 25 is pressed down, it drives the sliding sleeve 24 to slide downwards along the axial direction of the sleeve 22. The downward movement of the sliding sleeve 24 is crucial for activating its sealing function. The arc-shaped groove 27 inside interacts with the guide block 219 fixed to the linkage disc 216. Since the linkage disc 216 is restricted to rotation, the linear motion of the sliding sleeve 24, passing through the inclined surface of the arc-shaped groove 27, forces the guide block 219 to move, thereby causing the linkage disc 216 to rotate. The top surface of the linkage disc 216 has a toggle groove 217, into which a lever 213 moves. The lever 213 drives the slider 211 to slide along the guide rod 214 within the groove 210 of the fixed disc 29, compressing the spring 215. The movement of the slider 211, through the hinged support rod 212, transmits force to the push ring 28. The strut 212 acts as a lever, converting the axial movement of the slider 211 into a radial compressive force on the push ring 28. The push ring 28 then contracts, forcefully pressing the sealing sleeve 21 inside it, causing the sealing sleeve 21 to undergo elastic deformation and tightly wrap the connection between the underfloor heating coil 8 and the water distribution valve 6, forming a reliable sealing barrier and effectively preventing oxygen from seeping in.

[0024] When both hands press continuously until the upper connecting plate 25 and the lower connecting plate 31 are fully fitted, the locking function of the reinforcing component 3 is triggered simultaneously. The hinge rod 37 and the locking block 39 move as the hinge block 36 sinks. When the hinge block 36 is embedded in the bottom of the fitting groove 34, the locking block 39 slides into the interior of the connecting groove 35 under the action of the hinge rod 37, forming a horizontal mechanical self-locking to prevent the hinge block 36 from coming out. At the same time, the elastic hook 33 on the top of the lower pressure plate 32 is squeezed when it contacts the bottom surface of the upper pressure plate 26, and undergoes elastic deformation. When the upper pressure plate 26 descends to the designated position, the elastic hook 33 quickly engages in the locking hole 310 due to its own rebound force, marking the completion of the locking. The hinge rod 37 will then push the locking block 39 to lock the sealing sleeve 21. This locked state firmly maintains the downward position of the sliding sleeve 24, thereby indirectly maintaining the pressure on the sealing sleeve 21 and ensuring the long-term stability of the sealing effect. The entire operation is completed with a single press of both hands, achieving simultaneous sealing and locking, which is efficient and reliable. Releasing the limit is achieved by pinching the compression plate 311, causing the elastic hook 33 to no longer engage with the locking hole 310, thus separating the upper connecting plate 25 from the lower connecting plate 31. The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An oxygen barrier device for a heating system, comprising an inlet pipe (1), an inlet pipe (4), and a distribution pipe (5), characterized in that: The inlet pipe 1 (1), inlet pipe 2 (4) and branch pipe (5) are connected by a pipe connector. A plug (7) is provided at the end of the branch pipe (5) away from the inlet pipe 2 (4). A branch valve (6) is provided on the branch pipe (5). A floor heating coil (8) is provided below the branch valve (6). A bend protection sleeve (9) is provided at the bend of the floor heating coil (8). It also includes a protective component (2) to increase the sealing of the connection between the underfloor heating coil (8) and the water distribution valve (6) to prevent oxygen from entering through the connection; The reinforcement component (3) is used in conjunction with the protective component (2) to improve the stability of the protective component (2); The protective component (2) includes a sealing sleeve (21), which is fitted at the connection between the underfloor heating coil (8) and the water distribution valve (6). A sleeve (22) is fitted on the outside of the top end of the underfloor heating coil (8). A fixing post (23) is fixedly connected to the inside of the sleeve (22). A sliding sleeve (24) is fitted on the outside of the sleeve (22). An arc groove (27) is opened on the inside of the sliding sleeve (24). A linkage disc (216) is rotatably connected to the inside of the fixing post (23). The top surface of the linkage disc (216) A toggle groove (217) is provided. A fixed plate (29) is fixedly connected to the inner side of the sleeve (22). A sliding groove (210) is provided on the surface of the fixed plate (29). A slider (211) is slidably connected to the inner side of the sliding groove (210). A support rod (212) is inserted into and hinged to the inner side of the slider (211). A push ring (28) is inserted into and hinged to the end of the support rod (212) away from the slider (211). The push ring (28) is sleeved on the outer side of the sealing sleeve (21) and fixedly connected to the sealing sleeve (21).

2. The oxygen barrier device for a heating system according to claim 1, characterized in that: The sliding sleeve (24) is connected through and fixedly connected to the upper connecting plate (25), and the upper pressure plate (26) is fixedly connected to both sides of the upper connecting plate (25).

3. The oxygen barrier device for a heating system according to claim 1, characterized in that: A guide rod (214) is fixedly connected to the inner side of the slide groove (210). The guide rod (214) passes through the slider (211) and is slidably connected to the slider (211).

4. The oxygen barrier device for a heating system according to claim 3, characterized in that: A spring (215) is sleeved on the outside of the guide rod (214). One end of the spring (215) is fixedly connected to the inside of the slide groove (210), and the other end of the spring (215) is fixedly connected to the surface of the slider (211).

5. The oxygen barrier device for a heating system according to claim 1, characterized in that: The bottom of the slider (211) is fixedly connected to a lever (213), and the bottom end of the lever (213) is inserted into the actuation groove (217).

6. The oxygen barrier device for a heating system according to claim 1, characterized in that: The side of the linkage disc (216) is fixedly connected to a guide block (219), and the outer side of the sleeve (22) is provided with a movable groove (218). The guide block (219) passes through the movable groove (218) and is inserted into the arc-shaped groove (27) opened on the inner side of the sliding sleeve (24).

7. The oxygen barrier device for a heating system according to claim 2, characterized in that: The reinforcement component (3) includes a lower connecting plate (31), with lower pressure plates (32) fixedly connected to both sides of the lower connecting plate (31), and a hinge block (36) fixedly connected to the bottom of the upper connecting plate (25). A hinge rod (37) is inserted into and hinged to the bottom of the hinge block (36), and a locking block (39) is inserted into and hinged to the end of the hinge rod (37) away from the hinge block (36).

8. The oxygen barrier device for a heating system according to claim 7, characterized in that: The top surface of the lower connecting plate (31) is provided with a fitting groove (34), the shape of which is the same as that of the hinge block (36), and the top surface of the lower connecting plate (31) is provided with a connecting groove (35).

9. The oxygen barrier device for a heating system according to claim 8, characterized in that: The connecting groove (35) is connected to the fitting groove (34), and the locking block (39) is located inside the connecting groove (35).

10. The oxygen barrier device for a heating system according to claim 7, characterized in that: The top surface of the lower pressure plate (32) is fixedly connected to an elastic hook (33), and the top of the elastic hook (33) is fixedly connected to an extrusion plate (311). The surface of the upper pressure plate (26) is provided with a card hole (310), and the card hole (310) is aligned with the elastic hook (33).

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