Exhaust silencing mechanism of oxygen generator

Abstract

The utility model discloses an exhaust silencing mechanism of an oxygen generator, which belongs to the field of oxygen generators and comprises a pipe body, a sealing ring is fixedly mounted on one side of the pipe body, an insertion pipe is fixedly mounted on one side, close to the sealing ring, of the pipe body, and three support plates distributed in an annular array are fixedly mounted on the side wall of one end, close to the insertion pipe, of the pipe body. Mounting plates are fixedly mounted at the ends, away from the pipe body, of the supporting plates, and clamping assemblies are arranged among the sides, close to the inserting pipe, of the three mounting plates; and a mounting ring is arranged on the side, away from the insertion pipe, of the pipe body, dustproof cotton is fixedly mounted in the mounting ring, the outer side of the mounting ring is sleeved with a protection ring, and two insertion blocks which are symmetrically distributed are fixedly mounted on the side wall of the protection ring. Through the arrangement of the mounting ring and the dustproof cotton, the effect of absorbing dust in air is achieved, dust can be prevented from entering the pipe body when equipment is not used, and the mounting ring is connected with the pipe body through the fixing assembly, so that subsequent disassembly and replacement by workers are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of oxygen concentrators, and more particularly to an exhaust silencer mechanism of an oxygen concentrator. Background Art

[0002] An oxygen concentrator is a machine that produces oxygen. It utilizes air separation technology. First, air is compressed to a high density. The different condensation points of the air components are then used to separate the gas and liquid at a certain temperature. This is then distilled to separate the gas into oxygen and nitrogen. The exhaust of an oxygen concentrator may produce noise, which can affect its effectiveness.

[0003] The patent application number 202021785847.2 discloses an oxygen concentrator exhaust silencer device, including a pipe body mechanism, a silencer mechanism is clamped on the inner side of the pipe body mechanism, and a connecting mechanism is threadedly connected on the inner side of the silencer mechanism. When the utility model is in use, the inner pipe is inserted into the inner side of the exhaust pipe, and then the clamping block clamps the exhaust pipe through the reaction force of the spring and the telescopic rod, so that the connecting pipe and the exhaust pipe are fixed, and then the fixing pipe is rotated to thread the threaded groove with the threaded pipe, and the fixing pipe is fixed to one end of the connecting pipe and drives the silencer pipe to be fixed to the other end of the connecting pipe, and then the pipe body is put on one side of the silencer pipe so that the fixing pipe is clamped in the clamping groove, so that the pipe body protects the silencer pipe, and then when the gas is discharged, the noise is absorbed by the silencer cotton, which effectively realizes that when the existing oxygen concentrator is exhausted, the silencer device absorbs the noise generated when the gas is exhausted, and at the same time it is easy to be installed on the exhaust pipe of the oxygen concentrator, and the installation is more convenient.

[0004] Regarding the above-mentioned related technologies, the clamping block clamps the exhaust pipe through the reaction force of the spring and the telescopic rod, so that the connecting pipe and the exhaust pipe are fixed, and then the fixed pipe is rotated to make the threaded groove and the threaded pipe threadedly connected, which is conducive to improving installation efficiency. However, there is no dust-proof structure at the end of the pipe body mechanism. When the equipment is not in use, dust or impurities may float into the inside of the pipe body mechanism, which is inconvenient to clean, thereby affecting the subsequent use of the equipment. Utility Model Content

[0005] In order to solve the above problems, the present invention provides an exhaust silencing mechanism for an oxygen concentrator, which adopts the following technical solutions:

[0006] An exhaust silencer mechanism for an oxygen concentrator includes a tube body, a sealing ring fixedly mounted on one side of the tube body, a cannula fixedly mounted on the side of the tube body close to the sealing ring, three support plates distributed in a circular array fixedly mounted on the side wall of the tube body close to the cannula, a mounting plate fixedly mounted on each end of the support plates away from the tube body, and a clamping assembly provided between the three mounting plates close to the cannula side;

[0007] A sound collecting hopper is fixedly installed on the inner wall of the tube body close to the intubation side, and a silencer is fixedly installed on the side of the sound collecting hopper away from the intubation side. The side wall of the silencer is covered with a glass fiber layer, and sound-absorbing cotton is arranged on the outside of the glass fiber layer.

[0008] A mounting ring is provided on the side of the tube body away from the insertion tube, dust-proof cotton is fixedly installed in the mounting ring, a protective ring is provided on the outer side of the mounting ring, two symmetrically distributed plug-in blocks are fixedly installed on the side wall of the protective ring, and two symmetrically distributed mounting blocks are fixedly installed on the side wall of the tube body close to the mounting ring. The two mounting blocks are provided with slots matching the plug-in blocks on the same side on the side close to the protective ring, and movable slots are provided in the two slots, and fixed components are provided in the movable slots.

[0009] By adopting the above technical solution, when the equipment is used, the staff aligns one end of the tube body with the side opposite to the exhaust pipe of the oxygen concentrator, places the cannula in the exhaust pipe, and then clamps and fixes the exhaust pipe through the clamping assembly, thereby achieving the effect of fixed installation of the tube body. A sealing ring is provided between the tube body and the exhaust pipe, which is beneficial to improve the sealing of the joint between the tube body and the exhaust pipe. Then the gas enters the tube body through the exhaust pipe, and the gas enters the silencer pipe through the sound collecting bucket. The side wall of the silencer pipe is provided with a plurality of through holes distributed in a circular array, which is convenient for gas flow and helps to reduce the gas flow rate. A glass fiber layer is provided on the outside of the silencer pipe, and the gas flows in the glass fiber layer to achieve the effect of further silencing. Sound-absorbing cotton is provided on the outside of the glass fiber layer to achieve the effect of absorbing noise. The cooperation of the silencer pipe, the glass fiber layer and the sound-absorbing cotton is beneficial to reduce the generation of noise.

[0010] The staff places the mounting ring on the side of the pipe body away from the insertion pipe, so that the protective ring installed on the side wall of the mounting ring is placed on the exhaust pipe port, and the plug is placed in the slot opened on the side wall of the mounting block on the same side. A fixing component is provided in the slot to position and fix the plug, and then to fix the mounting ring. Dust-proof cotton is provided in the mounting ring, which can absorb dust, help prevent dust from entering the pipe body and affecting the subsequent use of the equipment, and is conducive to maintaining the use effect of the equipment.

[0011] Furthermore, the clamping assembly includes a splint arranged on the side of the mounting plate close to the cannula, the splint is fixedly installed with an anti-slip pad on the side close to the cannula, the mounting plate is provided with a screw on the side away from the cannula, the screw is threaded through the mounting plate of the same group at one end close to the cannula, the screw is rotatably connected to the side opposite to the splint on the same side at one end close to the cannula, a turntable is fixedly installed on the end of the screw away from the cannula, and a handle is fixedly installed on the side of the turntable away from the cannula.

[0012] By adopting the above technical solution, when one side of the tube body is in contact with the side opposite to the exhaust pipe, the handle drives the turntable and the screw on the same side to rotate, and the screw drives the clamping plate on the same side to move. By multiple clamping plates contacting the outer side of the exhaust pipe of the oxygen concentrator, the exhaust pipe of the oxygen concentrator can be clamped and fixed, thereby achieving the effect of fixing the tube body and facilitating improved disassembly and assembly efficiency of the tube body.

[0013] Furthermore, two symmetrically distributed multi-section telescopic columns are fixedly installed on one side of the mounting plate close to the insertion tube, and the two multi-section telescopic columns in the same group are fixedly connected to the side opposite to the splint on the same side at one end close to the insertion tube.

[0014] By adopting the above technical solution, when the screw drives the splint on the same side to move, the splint leads the two multi-section telescopic columns on the same side to extend and retract. The setting of the multi-section telescopic columns can limit and fix the splint, which helps to prevent the splint from rotating with the screw on the same side, and is conducive to maintaining the stability of the splint lifting and lowering.

[0015] Furthermore, a bolt is provided on one end of the turntable away from the intubation, and a rubber pad is fixedly installed on one side of the mounting plate away from the intubation. The threaded end of the bolt passes through the turntable on the same side and contacts the rubber pad on the same side.

[0016] By adopting the above technical solution, when the clamping plate contacts the outside of the exhaust pipe, the bolt is rotated so that the end of the bolt contacts the rubber pad installed on the side of the mounting plate on the same side, and by continuously rotating the bolt, the end of the bolt squeezes the rubber pad on the same side. The friction force generated by the bolt and the rubber pad achieves the effect of fixing the turntable, and then plays the role of fixing the screw, which is beneficial to maintaining the stability of the pipe body installation.

[0017] Furthermore, the fixing assembly includes a fixing block slidably installed in the movable groove, a spring is fixedly connected between one end of the fixing block and the inner wall of the side opposite to the movable groove on the same side, one side of the two insertion blocks is provided with a fixing groove matching the fixed block on the same side, and a toggle rod is fixedly installed on the opposite sides of the two fixing blocks, and the opposite ends of the two toggle rods slide through the movable groove on the same side.

[0018] By adopting the above technical solution, when the installation ring is spliced, the staff will fit the installation ring to the side of the tube body away from the insertion tube, so that the insertion block is engaged with the slot opened in the side wall of the installation block on the same side, and when the insertion block is located in the slot on the same side and slides, the insertion block pushes the fixed block on the same side to slide in the movable groove on the same side, and the fixed block pushes the spring on the same side to contract. When the insertion block and the slot are completely engaged, the fixed block returns to its original position under the elastic force of the spring on the same side, and the end of the fixed block is engaged with the fixed groove opened in the side wall of the insertion block on the same side, which can fix the insertion block and then fix the installation ring and the dust-proof cotton. When the installation ring needs to be removed, the fixed block on the same side is pulled into the movable groove on the same side by the toggle rod to disengage the fixed block from the fixed groove on the same side, and then the installation ring can be removed.

[0019] Furthermore, sliders are fixedly installed on both sides of the two fixed blocks near the spring section on the same side, and the inner wall of the movable groove is provided with a sliding groove matching the slider on the same side.

[0020] By adopting the above technical solution, when the fixed block slides in the movable groove, the fixed block slides with the slider in the sliding groove on the same side. The cooperation between the slider and the sliding groove is conducive to maintaining the sliding stability of the fixed block and helps to prevent the fixed block from escaping from the movable groove on the same side.

[0021] Furthermore, an inner protective ring is fixedly mounted on one side of the mounting ring close to the pipe body.

[0022] By adopting the above technical solution, the inner side of the mounting ring is provided with an inner protective ring, and the inner protective ring is placed in the exhaust pipe, which can support the exhaust pipe and also play a sealing role.

[0023] In summary, the present invention has the following beneficial technical effects:

[0024] (1) In the present invention, the installation ring and dustproof cotton are provided to absorb dust in the air, which helps to prevent dust from entering the tube body when the equipment is not in use. The installation ring is connected to the tube body through a fixing assembly, which is convenient for the staff to disassemble and replace it later. The inside of the tube body is equipped with a silencer, a glass fiber layer and sound-absorbing cotton to achieve the effect of reducing noise.

[0025] (2) In the present invention, by setting up the clamping assembly, the handle drives the turntable and the screw on the same side to rotate, and the screw drives the clamping plate on the same side to move. By making multiple clamping plates contact the outside of the exhaust pipe of the oxygen concentrator, the exhaust pipe of the oxygen concentrator can be clamped and fixed, thereby achieving the effect of fixing the installed pipe body, which is beneficial to improving the efficiency of disassembly and assembly of the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of the utility model;

[0027] Figure 2 It is a cross-sectional view of the utility model;

[0028] Figure 3 It is a cross-sectional view of the mounting block in the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Pipe body; 2. Support plate; 3. Mounting plate; 4. Turntable; 5. Bolt; 6. Screw; 7. Clamp; 8. Insert; 9. Mounting block; 10. Sound-absorbing cotton; 11. Glass fiber layer; 12. Insert block; 13. Protective ring; 14. Mounting ring; 15. Dust-proof cotton; 16. Silencer; 17. Slot; 18. Inner protective ring; 19. Sound collecting bucket; 20. Fixing block; 21. Spring; 22. Movable slot. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0034] The following is combined with Figure 1-3 The utility model is described in further detail.

[0035] See also Figure 1-3, an exhaust silencer mechanism of an oxygen concentrator, comprising a pipe body 1, a sealing ring is fixedly installed on one side of the pipe body 1, a cannula 8 is fixedly installed on the side of the pipe body 1 close to the sealing ring, three support plates 2 distributed in a circular array are fixedly installed on the side wall of the pipe body 1 close to the cannula 8, and a mounting plate 3 is fixedly installed on the end of the support plate 2 away from the pipe body 1. A clamping assembly is provided between the three mounting plates 3 close to the cannula 8 side, and the clamping assembly includes a splint 7 arranged on the side of the mounting plate 3 close to the cannula 8, and the splint 7 is fixedly installed on the side close to the cannula 8. Sliding pad, the mounting plate 3 is provided with a screw 6 on the side away from the intubation 8, the screw 6 is threaded through the same group of mounting plates 3 at one end close to the intubation 8, the screw 6 is rotatably connected to the side opposite to the splint 7 on the same side at one end close to the intubation 8, the screw 6 is fixedly installed with a turntable 4 on the end away from the intubation 8, the turntable 4 is fixedly installed with a handle on the side away from the intubation 8, the turntable 4 is provided with a bolt 5 on the end away from the intubation 8, the mounting plate 3 is fixedly installed with a rubber pad on the side away from the intubation 8, the end of the bolt 5 is threaded through the turntable 4 on the same side and contacts the rubber pad on the same side.

[0036] When the cam 1 is in operation, the staff aligns one end of the tube body 1 with the side opposite to the exhaust pipe of the oxygen concentrator, so that the cannula 8 is placed in the exhaust pipe, and then drives the turntable 4 and the screw 6 on the same side to rotate by the handle, and drives the splint 7 on the same side to move by the screw 6. The multiple splints 7 contact the outer side of the exhaust pipe of the oxygen concentrator, which can clamp and fix the exhaust pipe of the oxygen concentrator, thereby achieving the effect of fixing the installation of the tube body 1, and is conducive to improving the disassembly and assembly efficiency of the tube body 1. When the splint 7 contacts the outer side of the exhaust pipe, the bolt 5 is rotated to make the end of the bolt 5 contact the rubber pad installed on one side of the mounting plate 3 on the same side, and by continuously rotating the bolt 5, the end of the bolt 5 squeezes the rubber pad on the same side, and the friction force generated by the bolt 5 and the rubber pad achieves the effect of fixing the turntable 4, and then plays the role of fixing the screw 6, which is conducive to maintaining the stability of the installation of the tube body 1. The cannula 8 can support the exhaust pipe and help avoid deformation of the exhaust pipe caused by the squeezing of multiple splints 7.

[0037] Two symmetrically distributed multi-section telescopic columns are fixedly installed on the side of the mounting plate 3 near the insert pipe 8. The two multi-section telescopic columns in the same group are fixedly connected to the side opposite to the splint 7 on the same side near one end of the insert pipe 8. When the screw 6 drives the splint 7 on the same side to move, the splint 7 extends and retracts with the two multi-section telescopic columns on the same side. The setting of the multi-section telescopic columns can limit the fixed splint 7, which helps to prevent the splint 7 from rotating with the screw 6 on the same side, and is conducive to maintaining the stability of the lifting and lowering of the splint 7.

[0038] A sound collecting bucket 19 is fixedly installed on the inner wall of the tube body 1 close to the insertion tube 8, and a silencer 16 is fixedly installed on the side of the sound collecting bucket 19 away from the insertion tube 8. The side wall of the silencer 16 is provided with a glass fiber layer 11, and the outside of the glass fiber layer 11 is provided with sound-absorbing cotton 10. When the tube body 1 is installed, the gas enters the silencer 16 through the sound collecting bucket 19. The side wall of the silencer 16 is provided with a plurality of through holes distributed in a circular array to facilitate gas flow and help reduce the gas flow rate. The outside of the silencer 16 is provided with a glass fiber layer 11, and the gas flows in the glass fiber layer 11 to achieve the effect of further silencing. The outside of the glass fiber layer 11 is provided with sound-absorbing cotton 10 to achieve the effect of absorbing noise. The cooperation of the silencer 16, the glass fiber layer 11 and the sound-absorbing cotton 10 is conducive to reducing the generation of noise.

[0039] A mounting ring 14 is provided on the side of the tube body 1 away from the insert tube 8. An inner protective ring 18 is fixedly installed on the side of the mounting ring 14 close to the tube body 1. Dust-proof cotton 15 is fixedly installed in the mounting ring 14. A protective ring 13 is provided on the outer side of the mounting ring 14. Two symmetrically distributed plug-in blocks 12 are fixedly installed on the side wall of the protective ring 13. Two symmetrically distributed mounting blocks 9 are fixedly installed on the side wall of the tube body 1 close to one end of the mounting ring 14. The two mounting blocks 9 are provided with slots 17 matching the plug-in blocks 12 on the same side on the side close to the protective ring 13. Both slots 17 are provided with movable grooves 22. Both movable grooves 22 are provided with fixing components. The fixing components include a fixing block 20 slidably installed in the movable groove 22. A spring 21 is fixedly connected between one end of the fixing block 20 and the inner wall of the side opposite to the movable groove 22 on the same side. A fixing groove matching the fixed block 20 on the same side is provided on one side of the two plug-in blocks 12. A toggle rod is fixedly installed on the opposite side of the two fixed blocks 20, and the opposite ends of the two toggle rods slide through the movable groove 22 on the same side.

[0040] When the splicing installation ring 14 is inside, the staff fits the installation ring 13 to the side of the tube body 1 away from the insertion tube 8, so that the plug block 12 is engaged with the slot 17 opened on the side wall of the installation block 9 on the same side, and when the plug block 12 is located in the slot 17 on the same side and slides, the plug block 12 pushes the fixed block 20 on the same side to slide in the movable groove 22 on the same side, and the fixed block 20 pushes the spring 21 on the same side to contract. When the plug block 12 and the slot 17 are completely engaged, the fixed block 20 returns to its original position under the elastic force of the spring 21 on the same side, and the end of the fixed block 20 is aligned with the same side. The fixing grooves on the side walls of the side insert blocks 12 can be engaged to fix the insert blocks 12, and further to fix the mounting ring 14 and the dust-proof cotton 15. When the mounting ring 14 needs to be removed, the fixing block 20 on the same side is pulled into the movable groove 22 on the same side by the toggle rod to disengage the fixing block 20 from the fixing groove on the same side. The mounting ring 14 can then be removed. The dust-proof cotton 15 can absorb dust, which helps prevent dust from entering the tube body 1 and affecting the subsequent use of the equipment, and is beneficial to maintaining the use effect of the equipment.

[0041] Slide blocks are fixedly installed on both sides of the two fixed blocks 20 near the spring 21 on the same side, and a sliding groove matching the slider on the same side is opened on the inner wall of the movable groove 22. When the fixed block 20 slides in the movable groove 22, the fixed block 20 slides in the sliding groove on the same side with the slider. The cooperation between the slider and the sliding groove is conducive to maintaining the sliding stability of the fixed block 20 and helps to prevent the fixed block 20 from falling off the movable groove 22 on the same side.

[0042] The implementation principle of the embodiment of the present utility model is as follows: when the equipment is in use, the staff aligns one end of the tube body 1 with the side opposite to the exhaust pipe of the oxygen concentrator, so that the cannula 8 is placed in the exhaust pipe, and then the exhaust pipe is clamped and fixed by the clamping assembly, thereby achieving the effect of fixed installation of the tube body 1, and a sealing ring is provided between the tube body 1 and the exhaust pipe, which is beneficial to improve the sealing of the joint between the tube body 1 and the exhaust pipe, and then the gas enters the tube body 1 through the exhaust pipe, and the gas enters the silencer 16 through the sound collecting bucket 19. The side wall of the silencer 16 is provided with a plurality of through holes distributed in a circular array, which is convenient for gas flow and beneficial to reducing the gas flow rate, and a glass fiber layer 11 is provided on the outside of the silencer 16, and the gas flows in the glass fiber layer 11 to achieve the effect of further silencing, and sound-absorbing cotton 10 is provided on the outside of the glass fiber layer 11 to achieve the effect of absorbing noise. The cooperation of the silencer 16, the glass fiber layer 11 and the sound-absorbing cotton 10 is beneficial to reduce the generation of noise.

[0043] The staff places the mounting ring 14 on the side of the tube body 1 away from the insert tube 8, so that the protective ring 14 installed on the side wall of the mounting ring 14 is sleeved on the exhaust pipe port, and the plug-in block 12 is placed in the slot 17 opened on the side wall of the mounting block 9 on the same side. A fixing component is provided in the slot 17 to position and fix the plug-in block 12, and then to fix the mounting ring 14. Dust-proof cotton 15 is provided in the mounting ring 14. The dust-proof cotton 15 can absorb dust, which helps to prevent dust from entering the tube body 1 and affecting the subsequent use of the equipment, and is conducive to maintaining the use effect of the equipment.

[0044] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An exhaust silencing mechanism for an oxygen concentrator, comprising a pipe body (1), characterized in that: A sealing ring is fixedly mounted on one side of the tube body (1), a cannula (8) is fixedly mounted on the side of the tube body (1) close to the sealing ring, three support plates (2) distributed in a circular array are fixedly mounted on the side wall of one end of the tube body (1) close to the cannula (8), and a mounting plate (3) is fixedly mounted on the end of each support plate (2) away from the tube body (1), and a clamping assembly is provided between the three mounting plates (3) close to the cannula (8); A sound collecting hopper (19) is fixedly mounted on the inner wall of the tube body (1) on the side close to the insertion tube (8), and a silencer (16) is fixedly mounted on the side of the sound collecting hopper (19) away from the insertion tube (8). The side wall of the silencer (16) is sheathed with a glass fiber layer (11), and a sound-absorbing cotton (10) is provided on the outer side of the glass fiber layer (11); The tube body (1) is provided with a mounting ring (14) on the side away from the insertion tube (8), a dustproof cotton (15) is fixedly installed in the mounting ring (14), a protective ring (13) is provided on the outer side of the mounting ring (14), and two symmetrically distributed plug blocks (12) are fixedly installed on the side wall of the protective ring (13). Two symmetrically distributed mounting blocks (9) are fixedly installed on the side wall of one end of the tube body (1) close to the mounting ring (14), and slots (17) matching the plug blocks (12) on the same side are provided on the side of the two mounting blocks (9) close to the protective ring (13), and movable grooves (22) are provided in the two slots (17), and fixed components are provided in the movable grooves (22).

2. The exhaust silencing mechanism of an oxygen concentrator according to claim 1, characterized in that: The clamping assembly includes a splint (7) arranged on the side of the mounting plate (3) close to the cannula (8), and the splint (7) is fixedly installed with an anti-slip pad on the side close to the cannula (8). The mounting plate (3) is provided with a screw (6) on the side away from the cannula (8). The end of the screw (6) close to the cannula (8) is threadedly penetrated by the mounting plate (3) of the same group. The end of the screw (6) close to the cannula (8) is rotatably connected to the side opposite to the splint (7) on the same side. The end of the screw (6) away from the cannula (8) is fixedly installed with a turntable (4), and the turntable (4) is fixedly installed with a handle on the side away from the cannula (8).

3. The exhaust silencing mechanism of an oxygen concentrator according to claim 2, characterized in that: Two symmetrically distributed multi-section telescopic columns are fixedly mounted on one side of the mounting plate (3) close to the insertion tube (8); one end of the two multi-section telescopic columns in the same group close to the insertion tube (8) is fixedly connected to the side opposite to the clamping plate (7) on the same side.

4. The exhaust silencing mechanism of an oxygen concentrator according to claim 2, characterized in that: The turntable (4) is provided with a bolt (5) at one end away from the intubation (8), and a rubber pad is fixedly installed on the side of the mounting plate (3) away from the intubation (8). The end of the bolt (5) is threadedly passed through the turntable (4) on the same side and is in contact with the rubber pad on the same side.

5. The exhaust silencing mechanism of an oxygen concentrator according to claim 1, characterized in that: The fixing assembly includes a fixing block (20) slidably mounted in a movable groove (22), a spring (21) fixedly connected between one end of the fixing block (20) and an inner wall on the side opposite to the movable groove (22) on the same side, a fixing groove matching the fixing block (20) on the same side is opened on one side of the two inserting blocks (12), a toggle rod is fixedly mounted on the opposite side of the two fixing blocks (20), and the opposite ends of the two toggle rods slide through the movable groove (22) on the same side.

6. The exhaust silencing mechanism of an oxygen concentrator according to claim 5, characterized in that: Slide blocks are fixedly mounted on both sides of a section of the two fixed blocks (20) close to the spring (21) on the same side, and a sliding groove matching the slide blocks on the same side is opened on the inner wall of the movable groove (22).

7. The exhaust silencing mechanism of an oxygen concentrator according to claim 1, characterized in that: An inner protective ring (18) is fixedly mounted on the side of the mounting ring (14) close to the pipe body (1).

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