Distraction device for oxygen storage bag of breathing bag

Abstract

The invention relates to the technical field of medical auxiliary equipment, in particular to a breathing bag oxygen storage bag spreader which comprises a sleeve, a plurality of spreading frames are hinged to the periphery of the sleeve, a moving rod is connected to the interior of the middle end of the sleeve in a penetrating mode, one end of each spreading frame is hinged to the sleeve, and the other end of each spreading frame is hinged to the moving rod through a supporting rod. The moving rod moves up and down, and the supporting rod drives the opening frame to be unfolded or folded. According to the breathing bag oxygen storage bag opener, the inner core is made of stainless steel filaments wrapped with silica gel, the breathing bag oxygen storage bag opener is opened after penetrating into an oxygen storage bag when closed, the hot air flowing face is increased to accelerate drying, a wind power source can be additionally increased, and the drying rate is further increased. The distraction frame has certain elasticity and flexibility, is high in plasticity, easy to operate and fix, resistant to high temperature and high pressure, capable of being repeatedly used, economical and practical, the drying time is shortened in an accelerated mode, and the use turnover time of the breathing bag is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of medical auxiliary equipment, and in particular to a breathing bag oxygen storage bag expander. Background Art

[0002] The breathing bag is a manual device used for first aid and medical care. It is mainly used to provide artificial ventilation for patients. It is an important tool in cardiopulmonary resuscitation (CPR) and can provide timely ventilation support for patients. Its component oxygen storage bag can store high-concentration oxygen, increase the oxygen concentration of the delivered gas, and ensure that the patient has sufficient oxygen supply. Because it is a non-disposable item and expensive, it needs to be cleaned, disinfected, dried, and packaged at the disinfection supply center after use before it can be reused. At present, the following technical problems exist in the drying process of the cleaned breathing bag oxygen storage bag: (1) Due to the special structure of the oxygen storage bag, the wet breathing bag is prone to sticking tightly to each other due to gravity during the drying process, causing the hot air to flow slowly in the oxygen storage bag and prolong the drying time, thereby slowing down the turnover time of the breathing bag for clinical use; and it will lead to incomplete drying and cause mold. The current drying method is to use an air gun to blow it dry thoroughly, but the disadvantage of this method is that the drying time is too long and the air gun makes a lot of noise.

[0003] (2) After the oxygen storage bag is partially dried with an air gun, it is hung in a drying cabinet. Since the oxygen storage bag is relatively weak, hanging it multiple times will cause damage to the joints of the oxygen storage bag, and the drying time is long. In addition, due to the influence of gravity, the two surfaces will naturally stick together, and it is necessary to pull the two surfaces apart regularly, which increases the workload and labor costs. When the work is busy, people may forget about it, which increases the drying time.

[0004] (3) After partially drying the oxygen storage bag with an air gun, the bag is placed in a negative pressure vacuum drying cabinet. However, the disadvantage is that the oxygen storage bag of the breathing bag is not easily dried thoroughly and needs to be dried repeatedly, which increases time and labor costs, and the price of the machine is high. Summary of the invention

[0005] The main purpose of the present invention is to overcome the deficiencies in the prior art and provide a breathing bag oxygen storage bag expander.

[0006] The technical solution adopted by the present invention to achieve its technical purpose is: a breathing bag oxygen storage bag expander, including a sleeve, a expander assembly is arranged below the sleeve, and the expander assembly includes an expander frame, a silicone sleeve, a support rod, a moving rod and a toothed strip plate; A plurality of support frames are hingedly connected around the sleeve, and a moving rod is connected through the middle end. One end of the support frame is hinged to the sleeve, and the other end is hinged to the moving rod through a support rod. The moving rod moves up and down, and the support rod drives the support frame to be expanded or retracted; the moving rod maintains a sliding connection with the sleeve, and the support rod can drive the support frame to be expanded or retracted by moving the moving rod up and down.

[0007] A shell is fixedly installed above the sleeve, and one end of the moving rod passes through the sleeve and is located inside the shell.

[0008] Preferably, a switch button is fixedly mounted on the outside of the housing, and the switch button controls the start and stop of the drive motor.

[0009] Preferably, the external fixing sleeve of the support frame is provided with a silicone sleeve, and the silicone sleeve is hinged to the movable rod through a support rod; the silicone sleeve is used to contact the inside of the breathing bag oxygen storage bag to avoid scratching or damaging the inner wall of the breathing bag oxygen storage bag.

[0010] Preferably, a toothed stripe is embedded in the side surface of one end of the moving rod, and a driving gear is meshedly connected to one side of the toothed stripe. The driving gear is driven by a driving motor, and the driving motor is fixedly installed inside the housing; The driving motor drives the driving gear to rotate. Since the driving gear and the toothed strip plate are meshed and connected, and the toothed strip plate is embedded in the side surface of one end of the moving rod, when the driving gear rotates, it can drive the toothed strip plate and the moving rod to move up and down.

[0011] Preferably, the moving rod is provided with an air guide assembly, and the air guide assembly comprises a fan, an air guide pipe, an air induction pipe and a jacket; The air duct is arranged inside the moving rod, one end of the air duct passes through the moving rod and is located inside the shell, and is fixedly connected with the fan, the fan is fixedly installed outside the shell, and the air outlet of the fan is arranged toward the inside of the shell; The other end of the air duct passes through the moving rod and is fixedly connected to the air duct. One end of the air duct is hinged on the moving rod, and the air duct rotates under the action of external force. The air duct rotates under the action of external force, that is, one end of the air duct is hinged on the moving rod relatively tightly, so that external force is required to rotate, and then when the air duct itself is not subject to external force, it can pause at any position.

[0012] By opening the fan, air is blown into the interior of the air duct. Since the air duct passes through the movable rod and is fixedly connected with the air duct, the wind is discharged from the air duct, and the wind blows toward the interior of the breathing bag oxygen storage bag.

[0013] Preferably, the air guide duct is configured as an elastic hose, which can be stretched, extended and bent under the action of external force; the air guide duct is configured as an elastic hose, in order to cooperate with the movable rod to facilitate the up and down movement of the movable rod; at the same time, in order to cooperate with the air duct, it is convenient to rotate the air duct, thereby adjusting the direction of wind blowing.

[0014] Preferably, the jacket is arranged below the air duct, and one side of the jacket is fixed to the moving rod. By rotating the air duct under the action of external force, one end of the air duct is clamped inside the jacket, and the jacket is used to fix the air duct.

[0015] Preferably, a linkage mechanism is further provided inside the housing, and the linkage mechanism comprises a bending plate, a first slide plate, a second slide plate, a first slider, a rotating shaft, a moving plate, a second slider, a receiving rod, a pad and a movable plate; The horizontal plate part of the bending plate is fixedly installed with a first slide plate, a first slider is slidably connected inside the first slide plate, a rotating shaft is installed inside the first slider, a movable plate is movably connected to the rotating shaft, one end of the movable plate is movably connected to the second slider, one end of the movable plate is movably sleeved on the rotating shaft, and the other end is rotatably connected to the inner side of the second slider, a pad is fixedly installed on the inner side of the second slider, and a moving plate is fixedly installed on one end of the pad; A second slide plate is fixedly mounted on one side of the first slide plate, and the second slide plate can cooperate with a second slider so that the second slider slides inside the second slide plate.

[0016] Preferably, the linkage mechanism is entirely arranged inside the shell, the bending plate is fixedly installed inside the shell, and the moving plate is exposed inside the shell; One end of the receiving rod is fixedly connected to the moving rod, and the other end is fixedly connected to the rotating shaft.

[0017] Preferably, a hook is provided on one side of the movable plate, one end of the hook is fixedly mounted on the movable plate via a turntable, and the turntable is fixedly mounted on the movable plate; the end of the hook with the hook can rotate under the action of an external force, so that the other end of the hook can rotate around the turntable.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The breathing bag oxygen storage bag expander uses a stainless steel filament inside and a silicone outer layer. When closed, it is inserted into the oxygen storage bag and then opened, increasing the hot air flow surface to accelerate drying, and can also increase the wind source to further accelerate the drying rate. After thorough drying, it can be closed and taken out with one button, which is convenient to use. The expander has a certain degree of elasticity and flexibility, strong plasticity, easy to operate and fix, high temperature and high pressure resistance, reusable, economical and affordable, and accelerates the drying time, greatly shortening the use turnover time of the breathing bag.

[0019] Furthermore, by setting up the linkage mechanism, the hook can be effectively hidden inside the shell, which can facilitate the storage of the entire device and avoid the hook being exposed during storage, which is inconvenient to store or easily causes accidental injury. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the breathing bag oxygen storage bag expander in the expanded state.

[0021] Figure 2 It is a schematic diagram of the main structure of the breathing bag oxygen storage bag expander in the contracted state.

[0022] Figure 3 It is a left view schematic diagram of the structure in which the toothed strip plate is embedded inside the moving rod.

[0023] Figure 4 It is a schematic diagram of the main structure of the shell and linkage mechanism.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the linkage mechanism.

[0025] Figure 6 It is a side view structural diagram of part of the linkage mechanism structure.

[0026] in: 1- casing; 101- support frame; 102- silicone sleeve; 103- support rod; 104- moving rod; 105- toothed strip plate; 2- fan; 201- air duct; 202- air duct; 203- jacket; 3- shell; 301- switch button; 4- driving gear; 5- bending plate; 501- first slide plate; 502- second slide plate; 503- first slider; 504- rotating shaft; 505- moving plate; 506- second slider; 507- receiving rod; 508- pad; 509- movable plate; 6- hook; 601- turntable. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention. Example 1

[0030] See also Figure 1-3 A breathing bag oxygen storage bag expander comprises a sleeve 1, a expander assembly is arranged below the sleeve 1, and the expander assembly comprises an expander frame 101, a silicone sleeve 102, a support rod 103, a moving rod 104 and a toothed strip plate 105; A plurality of support frames 101 are hinged around the sleeve 1, and a moving rod 104 is connected to the middle end. One end of the support frame 101 is hinged to the sleeve 1, and the other end is hinged to the moving rod 104 through a support rod 103. The moving rod 104 moves up and down, and the support rod 103 drives the support frame 101 to expand or contract; the moving rod 104 maintains a sliding connection with the sleeve 1, and the support rod 103 can drive the support frame 101 to expand or contract by moving the moving rod 104 up and down.

[0031] The expansion frame 101 is made of metal (such as stainless steel filaments), and the external fixed sleeve of the expansion frame 101 is provided with a silicone sleeve 102, and the silicone sleeve 102 is hinged with the moving rod 104 through the support rod 103; the silicone sleeve 102 is used to contact the inside of the breathing bag oxygen storage bag to avoid scratching or scratching the inner wall of the breathing bag oxygen storage bag.

[0032] A toothed strip plate 105 is embedded in the side surface of one end of the moving rod 104, and one side of the toothed strip plate 105 is meshingly connected with a driving gear 4. The driving gear 4 is driven by a driving motor, and the driving motor is fixedly installed inside the shell 3; the driving motor drives the driving gear 4 to rotate. Since the driving gear 4 and the toothed strip plate 105 are meshingly connected, and the toothed strip plate 105 is embedded in the side surface of one end of the moving rod 104, when the driving gear 4 rotates, it can drive the toothed strip plate 105 and the moving rod 104 to move up and down.

[0033] A housing 3 is fixedly mounted above the sleeve 1 , and one end of the moving rod 104 passes through the sleeve 1 and is located inside the housing 3 .

[0034] A switch button 301 is fixedly mounted on the outside of the housing 3, and the switch button 301 controls the start and stop of the driving motor.

[0035] Specifically, when in use, the start and stop of the driving motor is controlled by the switch button 301. The driving motor is a reciprocating motor, which drives the driving gear 4 to rotate. Since the driving gear 4 and the toothed strip plate 105 are meshed and connected, and the toothed strip plate 105 is embedded in the side surface of one end of the moving rod 104, when the driving gear 4 rotates, it can drive the toothed strip plate 105 and the moving rod 104 to move up and down. The moving rod 104 is slidably connected to the sleeve 1. Through the up and down movement of the moving rod 104, the support frame 101 can be driven to expand or contract through the support rod 103. Example 2

[0036] See also Figure 1-2 On the basis of the above-mentioned embodiment, the breathing bag oxygen storage bag expander is provided with an air guide assembly on the moving rod 104, and the air guide assembly includes a fan 2, an air guide pipe 201, an air duct 202 and a jacket 203; The air duct 201 is arranged inside the moving rod 104, and one end of the air duct 201 passes through the moving rod 104 and is located inside the outer shell 3, and is fixedly connected with the fan 2. The fan 2 is fixedly installed on the outside of the outer shell 3, and the air outlet of the fan 2 is arranged toward the inside of the outer shell 3; by turning on the fan 2, air is blown toward the inside of the air duct 201, and because the air duct 201 passes through the moving rod 104 and is fixedly connected with the air duct 202, the wind is discharged from the air duct 202, so that the wind blows toward the inside of the breathing bag oxygen storage bag.

[0037] The other end of the air duct 201 passes through the moving rod 104 and is fixedly connected to the air duct 202. One end of the air duct 202 is hinged on the moving rod 104, and the air duct 202 rotates under the action of external force; the air duct 202 rotates under the action of external force, that is, one end of the air duct 202 is hinged on the moving rod 104 relatively tightly, so that external force is required to rotate, and then when it itself is not subject to external force, it can pause at any position.

[0038] Furthermore, in the present embodiment, the air duct 201 is configured as an elastic hose, which can be stretched, extended and bent under the action of external force; the air duct 201 is configured as an elastic hose, in order to cooperate with the movable rod 104, so as to facilitate the up and down movement of the movable rod 104; at the same time, in order to cooperate with the air duct 202, it is convenient to rotate the air duct 202, thereby adjusting the direction of wind blowing.

[0039] Furthermore, in this embodiment, the jacket 203 is arranged below the air duct 202, and one side of the jacket 203 is fixed on the moving rod 104. By rotating the air duct 202 under the action of external force, one end of the air duct 202 is clamped inside the jacket 203. The jacket 203 is used to fix the air duct 202.

[0040] Specifically, when in use, the fan 2 is powered on and turned on to blow air into the interior of the air guide tube 201. Since the air guide tube 201 passes through the movable rod 104 and is fixedly connected to the air duct 202, the wind is discharged from the air duct 202, and the wind blows toward the interior of the breathing bag oxygen storage bag.

[0041] The air duct 202 can rotate under the action of external force. One end of the air duct 202 is firmly hinged on the moving rod 104 and can be hinged on the moving rod 104 for adjustable tightness. Therefore, it can be paused at any position after being rotated by external force, thereby adjusting the direction of wind blowing.

[0042] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use. Example 3

[0043] See also Figure 1-6 On the basis of the above-mentioned embodiment, the breathing bag oxygen storage bag expander, the housing 3 is further provided with a linkage mechanism, the linkage mechanism comprises a bending plate 5, a first slide plate 501, a second slide plate 502, a first slider 503, a rotating shaft 504, a moving plate 505, a second slider 506, a receiving rod 507, a pad 508 and a movable plate 509; The linkage mechanism is disposed inside the housing 3 as a whole, the bending plate 5 is fixedly mounted inside the housing 3, and the moving plate 505 is exposed inside the housing 3; The horizontal plate part of the bending plate 5 is fixedly installed with a first slide plate 501, and a first slider 503 is slidably connected inside the first slide plate 501. A rotating shaft 504 is installed on the inner side of the first slider 503. A movable plate 509 is movably connected to the rotating shaft 504. One end of the movable plate 509 is movably connected to the second slider 506. One end of the movable plate 509 is movably sleeved on the rotating shaft 504, and the other end is rotatably connected to the inner side of the second slider 506. A pad 508 is fixedly installed on the inner side of the second slider 506, and a movable plate 505 is fixedly installed on one end of the pad 508; one end of the receiving rod 507 is fixedly connected to the moving rod 104, and the other end is fixedly connected to the rotating shaft 504.

[0044] A second slide plate 502 is fixedly mounted on one side of the first slide plate 501 . The second slide plate 502 can cooperate with the second slider 506 , so that the second slider 506 slides inside the second slide plate 502 .

[0045] Furthermore, in this embodiment, a hook 6 is provided on one side of the movable plate 505, and one end of the hook 6 is fixedly mounted on the movable plate 505 through a turntable 601, and the turntable 601 is fixedly mounted on the movable plate 505; the end of the hook 6 with the hook can rotate under the action of an external force, so that the other end of the hook 6 can rotate around the turntable 601.

[0046] Specifically, when in use, when the rotating shaft 504 is lifted up by the receiving rod 507 and moves upward, the first slider 503 moves upward accordingly, so that the second slider 56 and the movable plate 55 are pressed against the vertical plate part of the bending plate 50; the first slider 53 is continued to move upward, so that the movable plate 59 changes from tilted to vertical, so that the first slider 53 slowly lifts the movable plate 59, so that the hook 6 and the rotating disk 601 are raised to the outside of the housing 3, so that the hook 6 can be rotated around the rotating disk 601, so that the hook end of the hook 6 faces upward, and the overall opener is hung by the hook 6; After the spreader is used and needs to be closed as a whole, the hook 6 is first rotated around the turntable 601 so that the hook end of the hook 6 faces downward, so that the hook 6 is located on the movable plate 505 as a whole; then the first slider 53 drives the rotating shaft 504 to move downward through the receiving rod 507, and the rotating shaft 54 ​​pulls one end of the movable plate 59 to tilt and move. At this time, due to the tilt of the movable plate 59, the height position of the second slider 56 and the movable plate 55 is lowered, so that the hook 6 and the turntable 601 are located inside the shell 3 again.

[0047] The solution in this embodiment can be selectively combined with the solutions in other embodiments for use.

[0048] The working principle and specific use process of the breathing bag oxygen storage bag expander: When it is deployed, the start and stop of the driving motor is controlled by the switch button 301, and the driving motor drives the driving gear 4 to rotate. Since the driving gear 4 and the toothed strip plate 105 are meshed and connected, and the toothed strip plate 105 is embedded in the side surface of one end of the moving rod 104, when the driving gear 4 rotates, the toothed strip plate 105 and the moving rod 104 are driven to move upward, and the moving rod 104 is slidably connected to the sleeve 1. Through the upward movement of the moving rod 104, the support frame 101 can be driven to be deployed through the support rod 103.

[0049] When the moving rod 104 moves upward, the rotating shaft 504 is moved upward together with the moving rod 104 by the receiving rod 507, so that the first slider 503 moves upward accordingly, and finally the second slider 506 and the moving plate 505 are pressed against the vertical plate part of the bending plate 5; when the moving rod 104 continues to move upward, the first slider 503 continues to move upward, so that the movable plate 509 changes from inclined to vertical, so that the first slider 503 slowly lifts the movable plate 59, so that the hook 6 and the rotating disk 601 are raised to the outside of the housing 3, so that the hook 6 can be rotated around the rotating disk 601, so that the hook end of the hook 6 faces upward, and the overall opener is hung by the hook 6; Then, the fan 2 is powered on and turned on to blow air into the interior of the air duct 201. Since the air duct 201 passes through the movable rod 104 and is fixedly connected to the air duct 202, the wind is discharged from the air duct 202, and the wind blows toward the interior of the breathing bag oxygen storage bag; the air duct 202 can be rotated under the action of an external force, and one end of the air duct 202 is hinged to the movable rod 104 relatively tightly, and can be hinged to the movable rod 104 so as to be loose and adjustable, so that it can be paused at any position after being rotated by external force, thereby adjusting the direction of the wind.

[0050] When closing and storing, the fan 2 is turned off first, and the air duct 202 is fixed by the jacket 203 by rotating the air duct 202 downward; The hook 6 is rotated again around the rotating disk 601 so that the hook end of the hook 6 faces downward, so that the entire hook 6 is located on the movable plate 505; The switch button 301 is then used to control the reverse rotation of the driving motor, so that the gear 4 is driven to rotate, driving the toothed strip plate 105 and the moving rod 104 to move downward. The moving rod 104 maintains a sliding connection with the sleeve 1. Through the downward movement of the moving rod 104, the support frame 101 can be driven to close through the support rod 103.

[0051] Finally, when the first slider 503 drives the rotating shaft 504 to move downward through the receiving rod 507, the rotating shaft 504 pulls one end of the movable plate 509 to tilt and move. At this time, due to the tilt of the movable plate 509, the height position of the second slider 506 and the movable plate 505 is lowered, so that the hook 6 and the turntable 601 are located inside the shell 3 again.

[0052] It should be noted that although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures, equivalent processes or equivalent functional transformations made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the patent of the present invention.

Claims

1. A breathing bag oxygen storage bag expander, characterized in that: The sleeve (1) comprises a plurality of support frames (101) hingedly connected around the sleeve (1), a moving rod (104) penetrating the middle end, one end of the support frame (101) being hingedly connected to the sleeve (1), and the other end of the support frame (101) being hingedly connected to the moving rod (104) via a support rod (103); the moving rod (104) moves up and down, and drives the support frame (101) to expand or contract via the support rod (103); An outer shell (3) is fixedly mounted above the sleeve (1), and one end of the moving rod (104) passes through the sleeve (1) and is located inside the outer shell (3).

2. A breathing bag oxygen storage bag expander according to claim 1, characterized in that: The external fixed sleeve of the support frame (101) is provided with a silicone sleeve (102), and the silicone sleeve (102) is hingedly connected to the moving rod (104) via a support rod (103).

3. A breathing bag oxygen storage bag expander according to claim 1, characterized in that: A toothed strip plate (105) is embedded in the side surface of one end of the moving rod (104), and one surface of the toothed strip plate (105) is meshingly connected to a driving gear (4). The driving gear (4) is driven by a driving motor, and the driving motor is fixedly mounted inside the housing (3).

4. A breathing bag oxygen storage bag expander according to claim 1, characterized in that: The movable rod (104) is provided with an air guide assembly, wherein the air guide assembly comprises a fan (2), an air guide pipe (201), an air induction pipe (202) and a jacket (203); The air guide duct (201) is arranged inside the movable rod (104); one end of the air guide duct (201) passes through the movable rod (104) and is located inside the housing (3); and is fixedly connected to the fan (2); the fan (2) is fixedly mounted outside the housing (3); and the air outlet of the fan (2) is arranged toward the inside of the housing (3); The other end of the air guide pipe (201) passes through the moving rod (104) and is fixedly connected to the air induced pipe (202); one end of the air induced pipe (202) is hinged on the moving rod (104); and the air induced pipe (202) rotates under the action of an external force.

5. A breathing bag oxygen storage bag expander according to claim 4, characterized in that: The air guide pipe (201) is configured as an elastic hose, and can be stretched, extended and bent under the action of an external force.

6. A breathing bag oxygen storage bag expander according to claim 4, characterized in that: The jacket (203) is arranged below the air duct (202), and one side of the jacket (203) is fixed to the moving rod (104). By rotating the air duct (202) under the action of an external force, one end of the air duct (202) is clamped inside the jacket (203).

7. A breathing bag oxygen storage bag expander according to claim 1, characterized in that: A linkage mechanism is also provided inside the housing (3), the linkage mechanism comprising a bending plate (5), a first slide plate (501), a second slide plate (502), a first slider (503), a rotating shaft (504), a moving plate (505), a second slider (506), a receiving rod (507), a pad (508) and a movable plate (509); A first slide plate (501) is fixedly mounted on the transverse plate portion of the bending plate (5), a first slider (503) is slidably connected inside the first slide plate (501), a rotating shaft (504) is mounted inside the first slider (503), a movable plate (509) is movably connected to the rotating shaft (504), one end of the movable plate (509) is movably connected to a second slider (506), one end of the movable plate (509) is movably sleeved on the rotating shaft (504), and the other end is rotatably connected to the inner side of the second slider (506), a pad (508) is fixedly mounted on the inner side of the second slider (506), and a moving plate (505) is fixedly mounted on one end of the pad (508); A second slide plate (502) is fixedly mounted on one side of the first slide plate (501).

8. The detection device for internal pipeline corrosion detection according to claim 7 is characterized in that: The bending plate (5) is fixedly mounted inside the housing (3), and the movable plate (505) is exposed and arranged inside the housing (3); One end of the receiving rod (507) is fixedly connected to the moving rod (104), and the other end is fixedly connected to the rotating shaft (504).

9. The detection device for internal pipeline corrosion detection according to claim 8, characterized in that: A hook (6) is provided on one side of the movable plate (505), and one end of the hook (6) is fixedly mounted on the movable plate 505 via a rotating disk (601).

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