Multi-cavity resistance-adjustable lung expansion trainer

Abstract

The invention discloses a multi-cavity resistance-adjustable lung expansion trainer, and relates to the technical field of lung expansion training. A multi-cavity resistance-adjustable lung dilatation trainer comprises a mounting frame, an airflow channel is formed in the inner wall of the mounting frame, a plurality of airflow cavities are fixedly connected to the inner wall of the mounting frame, resistance balls are arranged on the inner walls of the airflow cavities, and a threaded column rotates to drive a baffle plate to move through an arranged resistance independent assembly; the baffle plates move, so that air flowing spaces between the multiple baffle plates and the airflow cavities can be independently adjusted and controlled, isolated or unified training of the resistance balls in the multiple airflow cavities is achieved, and the diversity of lung expansion breathing training is improved; the airflow direction during respiratory training can be conveniently guided, so that independent airflow directions can be conveniently provided during expiration training and inspiration training, and the training effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lung expansion training, in particular to a multi-cavity resistance adjustable lung expansion training device. BACKGROUND

[0002] The lung expansion training device is an important medical auxiliary device for assisting the rehabilitation of patients with respiratory system diseases and improving the respiratory function of healthy people, and is widely used in postoperative rehabilitation, chronic obstructive pulmonary disease nursing and athlete respiratory capacity training scenes. The core principle is to set up an air flow cavity and a resistance component, so that the user overcomes the resistance in the breathing process, thereby enhancing the respiratory muscle strength and improving the lung ventilation function.

[0003] However, the resistance adjustment mode of the existing lung expansion training device is single, mostly overall gear adjustment, it is difficult to control the gas flow space of multiple air flow cavities individually, it is difficult to realize isolated or unified training of different cavity resistance components, leading to the solidification of training mode, it is difficult to meet the diversified lung expansion training needs, secondly, the air flow guiding and switching structure is imperfect, most products do not set up independent air flow guiding components, the air flow direction is easy to be confused during exhalation and inhalation training, and there is a lack of convenient air flow channel switching mechanism, it is difficult to quickly switch between the two training modes, affecting the convenience of training operation and reducing the effect of respiratory training. SUMMARY

[0004] The purpose of the present application is to provide a multi-cavity resistance adjustable lung expansion training device to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a multi-cavity resistance adjustable lung expansion training device, comprising a mounting frame, an air flow channel is formed in the inner wall of the mounting frame, a plurality of air flow cavities are fixedly connected to the inner wall of the mounting frame, and a resistance ball is arranged on the inner wall of the air flow cavity, further comprising: A resistance independent component is arranged between the air flow channel and the air flow cavity, which is used for independently adjusting the resistance of the plurality of air flow cavities; An air flow guiding component is arranged on the inner wall of the air flow channel, which is used for guiding the air flow direction of breathing; An air flow switching component is arranged on the top surface of the air flow channel, which is used for switching the air flow direction of breathing.

[0006] Preferably, the resistance independent assembly comprises a plurality of shielding plates, the plurality of shielding plates are respectively arranged between the airflow cavity and the airflow channel, the inner wall of the airflow channel is provided with a plurality of limiting grooves, the inner wall of the airflow channel is provided with a plurality of sliding plates, the sliding plates are slidably connected with the inner wall of the limiting grooves, the bottom surface of the sliding plates is fixedly connected with a plurality of first compression springs, the lower ends of the plurality of first compression springs are fixedly connected with the inner wall of the airflow channel, the side wall of the mounting frame is fixedly connected with a fixed plate, the side wall of the fixed plate is provided with a plurality of threaded holes, the inner wall of the threaded holes is threadedly connected with threaded columns, the side wall of the shielding plate is provided with rotating grooves, and the threaded columns are rotatably connected with the inner wall of the rotating grooves.

[0007] Preferably, the airflow guiding assembly comprises two shielding blocks, the two shielding blocks are arranged on the inner wall of the airflow channel, the inner wall of the shielding block is provided with two movable grooves, the inner wall of the movable groove is fixedly connected with a fixed frame, the bottom surface of the fixed frame is provided with a sliding hole, the inner wall of the sliding hole is slidably connected with a sliding column, the upper end of the sliding column is fixedly connected with the bottom surface of the shielding block, the surface of the sliding column is sleeved with a second compression spring, and the inner wall of the airflow channel is provided with an air inlet.

[0008] Preferably, the airflow switching assembly comprises a switching box, the switching box is fixedly connected to the top surface of the mounting frame, the bottom surface of the switching box is provided with a collection groove, the bottom surface of the switching box is provided with an air inlet groove, the inner wall of the air inlet groove is slidably connected with a switching plate, the inner wall of the switching box is slidably connected with a pushing head, and the bottom surface of the pushing head is fixedly connected with the top surface of the switching plate.

[0009] Preferably, the side wall of the mounting frame is provided with a flexible air blowing assembly, the flexible air blowing assembly comprises an air blowing pipe, the air blowing pipe is arranged on the side wall of the mounting frame, one end of the air blowing pipe is fixedly connected with an air blowing head, the inner wall of the air inlet is fixedly connected with a connecting head, and the other end of the air blowing pipe is fixedly connected with the inner wall of the connecting head.

[0010] Preferably, the top surface of the switching plate is slidably connected with a pressing plate, the top surface of the pressing plate is fixedly connected with a plurality of third compression springs, and the upper ends of the plurality of third compression springs are fixedly connected with the inner wall of the air inlet groove.

[0011] Preferably, the inner walls of the air inlet groove and the collection groove are provided with mounting grooves, and the inner walls of the mounting grooves are fixedly connected with filter layers.

[0012] Preferably, the top surface of the sliding plate is provided with a sliding groove, and the sliding plate is slidably connected with the inner wall of the sliding groove.

[0013] Preferably, the side wall of the mounting frame is fixedly connected with a plurality of plastic limiting frames, and the surface of the air blowing pipe is snap-connected with the inner wall of the plastic limiting frame.

[0014] Preferably, a viewing window is fixedly connected to the inner wall of the airflow cavity, and a scale groove is formed on the surface of the airflow cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The independent resistance components allow the threaded column to rotate, thereby moving the baffles. This movement of the baffles facilitates individual adjustment and control of the gas flow space between multiple baffles and airflow chambers, enabling isolated or unified training of the resistance balls within multiple airflow chambers. This enhances the diversity of lung expansion breathing training. The airflow guiding components facilitate the guidance of airflow direction during breathing training, allowing for independent airflow directions during exhalation and inhalation training, thus improving training effectiveness. The airflow switching components allow the push head to move the switching plate when the fixed slot is pushed, facilitating the switching between the inlet and outlet airflow channels. This allows for both exhalation and inhalation training methods to be met. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional view of the switching box in this invention; Figure 3 This is a partial cross-sectional view of the sliding plate in this invention; Figure 4 This is a partial cross-sectional view of the independent resistance component in this invention; Figure 5 This is a partial cross-sectional view of the airflow switching component in this invention; Figure 6 for Figure 2 Enlarged structural diagram at point A; Figure 7 for Figure 3 Enlarged structural diagram at point B; Figure 8 for Figure 4 Enlarged structural diagram at point C; Figure 9 for Figure 5 Enlarged structural diagram at point D; Figure 10 for Figure 5 A magnified structural diagram at point E in the middle.

[0017] In the figure: 1, mounting frame; 2, air flow channel; 3, air flow cavity; 4, resistance ball; 501, shielding plate; 502, limiting groove; 503, sliding plate; 504, first compression spring; 505, fixed plate; 506, threaded hole; 507, threaded column; 508, rotating groove; 509, sliding groove; 601, shielding block; 602, movable groove; 603, fixed frame; 604, sliding hole; 605, sliding column; 606, second compression spring; 607, air inlet; 701, switching box; 702, collection groove; 703, air inlet groove; 704, extrusion plate; 705, third compression spring; 706, switching plate; 707, push head; 708, filter layer; 709, mounting groove; 801, blowing pipe; 802, blowing head; 803, connecting head; 804, plastic limiting frame; 9, viewing window; 10, scale groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0019] Please refer to Figure 1 - Figure 10 The present application provides a multi-cavity resistance adjustable lung expansion training device technical solution: a multi-cavity resistance adjustable lung expansion training device, comprising a mounting frame 1, an air flow channel 2 is formed in the inner wall of the mounting frame 1, a plurality of air flow cavities 3 are fixedly connected to the inner wall of the mounting frame 1, resistance balls 4 are arranged on the inner wall of the air flow cavities 3, and the device further comprises: a resistance independent assembly, which is arranged between the air flow channel 2 and the air flow cavities 3, and is used for independently adjusting the resistance of the plurality of air flow cavities 3; an air flow guiding assembly, which is arranged on the inner wall of the air flow channel 2, and is used for guiding the air flow direction of breathing; an air flow switching assembly, which is arranged on the top surface of the air flow channel 2, and is used for switching the air flow direction of breathing; The resistance independent assembly is arranged, so that the plurality of air flow cavities 3 can be independently adjusted in resistance, thereby improving the diversity of lung expansion breathing training. The air flow guiding assembly is arranged, so that the air flow direction of breathing can be guided, thereby having independent air flow directions during exhalation training and inhalation training. The air flow switching assembly is arranged, so that the air flow direction of breathing can be switched, thereby meeting the two training modes of exhalation training and inhalation training.

[0020] Please refer toFigure 3 Figure 4 Figure 7 and Figure 8 Further, the resistance independent assembly comprises a plurality of shielding plates 501 arranged between the airflow cavities 3 and the airflow channel 2, the inner wall of the airflow channel 2 is provided with a plurality of limiting grooves 502, the inner wall of the airflow channel 2 is provided with a plurality of sliding plates 503, the sliding plates 503 are in sliding connection with the inner wall of the limiting grooves 502, the bottom surface of the sliding plates 503 is fixedly connected with a plurality of first compression springs 504, the lower ends of the plurality of first compression springs 504 are fixedly connected with the inner wall of the airflow channel 2, the side wall of the mounting frame 1 is fixedly connected with a fixed plate 505, the side wall of the fixed plate 505 is provided with a plurality of threaded holes 506, the inner wall of the threaded holes 506 is threadedly connected with threaded columns 507, the side wall of the shielding plates 501 is provided with rotating grooves 508, the threaded columns 507 are in rotating connection with the inner wall of the rotating grooves 508, the top surface of the sliding plates 503 is provided with sliding grooves 509, the shielding plates 501 are in sliding connection with the inner wall of the sliding grooves 509. Through the resistance independent assembly, the weights of the resistance balls 4 in the plurality of airflow cavities 3 decrease from left to right, the positions of the shielding plates 501 are arranged on the inner wall of the airflow channel 2 and correspond to the positions of the airflow cavities 3, at the same time, the limiting grooves 502 are arranged to facilitate the limiting of the sliding plates 503, so that the sliding plates 503 vertically slide up and down, the first compression springs 504 are arranged to facilitate the release of the elastic potential energy of the sliding plates 503, so that the sliding plates 503 move upward, the sliding plates 503 move upward to push the shielding plates 501 to move upward, so that the top surface of the shielding plates 501 abuts against the inner wall of the airflow channel 2, thereby facilitating the sealing between the shielding plates 501 and the airflow cavities 3, the threaded columns 507 are in rotating connection with the inner wall of the rotating grooves 508, the threaded columns 507 and the threaded holes 506 are arranged to cooperate with each other, when the threaded columns 507 rotate to drive the shielding plates 501 to move, the shielding plates 501 move to facilitate the independent adjustment and control of the gas flow space between the plurality of shielding plates 501 and the airflow cavities 3, thereby satisfying the isolated or unified training of the resistance balls 4 in the plurality of airflow cavities 3, thereby facilitating the diversification of the lung expansion and breathing training, and the sliding grooves 509 are arranged to facilitate the limiting of the shielding plates 501, so that the shielding plates 501 slide in parallel on the inner wall of the sliding grooves 509.

[0021] Please refer to Figure 5 and Figure 9Further, the airflow guiding assembly comprises two shielding blocks 601, both of which are arranged on the inner wall of the airflow channel 2, the inner wall of the shielding block 601 is provided with two movable grooves 602, the inner wall of the movable groove 602 is fixedly connected with a fixing frame 603, the bottom surface of the fixing frame 603 is provided with a sliding hole 604, the inner wall of the sliding hole 604 is slidably connected with a sliding column 605, the upper end of the sliding column 605 is fixedly connected with the bottom surface of the shielding block 601, the surface of the sliding column 605 is sleeved with a second compression spring 606, and the inner wall of the airflow channel 2 is provided with an air inlet 607. Through the arranged airflow guiding assembly, the two shielding blocks 601 are arranged in the same direction, the airflow enters from the air inlet 607 during exhalation, the airflow entering the air inlet 607 pushes the two shielding blocks 601 respectively, the shielding block 601 located on the upper side is abutted with the inner wall of the movable groove 602 under the action of the second compression spring 606, so that even if the shielding block 601 located on the upper side is pushed by the inlet airflow, the shielding block 601 located on the upper side can only be in contact with the inner wall of the movable groove 602 more closely, and when the shielding block 601 located on the lower side is pushed by the inlet airflow, the shielding block 601 located on the lower side moves to push the second compression spring 606 to contract, so that the airflow continues to flow downward through the shielding block 601 located on the lower side. During inhalation, the airflow is sucked out from the inner wall of the air inlet 607, so that the shielding block 601 located on the lower side is abutted with the inner wall of the movable groove 602, and the airflow passes through the shielding block 601 located on the upper side. Through the arranged two shielding blocks 601, the direction of the breathing airflow can be guided, and the airflow flow direction is independent during exhalation training and inhalation training, so that the training effect is improved.

[0022] Please refer to Figure 5 and Figure 10Further, the airflow switching assembly comprises a switching box 701 fixedly connected to the top surface of the mounting frame 1, the bottom surface of the switching box 701 is provided with a collection groove 702, the bottom surface of the switching box 701 is provided with an air inlet groove 703, the inner wall of the air inlet groove 703 is slidably connected with a switching plate 706, the inner wall of the switching box 701 is slidably connected with a pushing head 707, the bottom surface of the pushing head 707 is fixedly connected with the top surface of the switching plate 706, the top surface of the switching plate 706 is slidably connected with a pressing plate 704, the top surface of the pressing plate 704 is fixedly connected with a plurality of third compression springs 705, the upper ends of the plurality of third compression springs 705 are fixedly connected with the inner wall of the air inlet groove 703, the inner walls of the air inlet groove 703 and the collection groove 702 are provided with mounting grooves 709, and the inner walls of the mounting grooves 709 are fixedly connected with filter layers 708. Through the airflow switching assembly, the airflow channel 2 is in communication with the air inlet groove 703, the exhaust holes at the upper ends of the plurality of airflow cavities 3 are in communication with the collection groove 702, the pushing head 707 is pushed to drive the switching plate 706 to move, the switching plate 706 moves to facilitate switching of the airflow channels of the air inlet groove 703 and the collection groove 702, the airflow channel of the air inlet groove 703 is closed to facilitate the internal part of the airflow inlet 607 to enter and then pass through the airflow cavity 3 to push the airflow channel 2 to move for exhalation training, when the airflow channel of the collection groove 702 is closed, the airflow passes through the air inlet groove 703 to enter the airflow cavity 3 to push the resistance ball 4 to finally pass through the air inlet 607 to be discharged, thereby performing inhalation training, thereby facilitating two training modes of exhalation training and inhalation training, the pressing plate 704 and the third compression springs 705 are used in cooperation to make the plurality of third compression springs 705 extend to push the pressing plate 704 to press the switching plate 706, thereby improving the sealing effect between the bottom surface of the switching plate 706 and the air inlet groove 703, the filter layers 708 are arranged to facilitate filtering of the air passing through the air inlet groove 703 and the collection groove 702, thereby avoiding that dust impurities are inhaled by the patient during the breathing training.

[0023] Please refer to Figure 1Further, the side wall of the mounting frame 1 is provided with a flexible blowing assembly, the flexible blowing assembly comprises a blowing pipe 801, the blowing pipe 801 is arranged on the side wall of the mounting frame 1, one end of the blowing pipe 801 is fixedly connected with a blowing head 802, the inner wall of the air inlet 607 is fixedly connected with a connecting head 803, the other end of the blowing pipe 801 is fixedly connected with the inner wall of the connecting head 803, a plurality of plastic limiting racks 804 are fixedly connected with the side wall of the mounting frame 1, the surface of the blowing pipe 801 is connected with the inner wall of the plastic limiting rack 804, the flexible blowing pipe 801 is arranged, so that the patient can perform breathing training at different angles or different postures, and the blowing head 802 is provided as a flat mouth, so that the blowing head 802 is more suitable for the mouthpiece type, thereby improving the comfort of breathing training, and the plurality of plastic limiting racks 804 are arranged, so that the blowing pipe 801 is conveniently constrained, thereby improving the convenience of combing the blowing pipe 801.

[0024] Please refer to Figure 1 and Figure 2 The inner wall of the airflow cavity 3 is fixedly connected with a viewing window 9, and the surface of the airflow cavity 3 is provided with a scale groove 10. The viewing window 9 is arranged, so that the movement of the resistance ball 4 can be directly observed, and the scale groove 10 is arranged, so that the movement distance of the resistance ball 4 can be accurately measured, thereby improving the accuracy of the breathing training.

[0025] Working principle: in use, the weights of the resistance balls 4 in the plurality of airflow cavities 3 are arranged from large to small from left to right, the position of the shielding plate 501 is arranged on the inner wall of the airflow channel 2 and corresponds to the position of the airflow cavity 3, and the limiting groove 502 is arranged, so that the sliding plate 503 is conveniently limited, thereby facilitating the vertical up-down sliding of the sliding plate 503, the first compression springs 504 are arranged, so that the sliding plate 503 is conveniently released from the elastic potential energy, thereby pushing the sliding plate 503 to move upward, the sliding plate 503 moves upward, thereby pushing the shielding plate 501 to move upward, so that the top surface of the shielding plate 501 abuts against the inner wall of the airflow channel 2, thereby facilitating the shielding plate 501 and the airflow cavity 3 to maintain good sealing, the threaded column 507 is rotatably connected with the inner wall of the rotating groove 508, the threaded column 507 and the threaded hole 506 are arranged to be used together, when the threaded column 507 rotates and drives the shielding plate 501 to move, the shielding plate 501 moves, thereby facilitating the adjustment and control of the gas flow space between the plurality of shielding plates 501 and the airflow cavities 3, thereby satisfying the isolated or unified training of the resistance balls 4 in the plurality of airflow cavities 3, thereby facilitating the diversified training of the lung expansion breathing.

[0026] Meanwhile, by setting the air flow guide assembly, two shielding blocks 601 are arranged in the same direction, and the air flow enters from the air inlet 607 when exhaling. The air flow entering the air inlet 607 pushes the two shielding blocks 601 respectively. The shielding block 601 located on the upper side is in contact with the inner wall of the movable groove 602 under the action of the second compression spring 606, so that even if the air inlet air flow pushes the shielding block 601 located on the upper side, the shielding block 601 located on the upper side can only make the shielding block 601 located on the upper side contact the inner wall of the movable groove 602 more closely. When the air inlet air flow pushes the shielding block 601 located on the lower side, the shielding block 601 located on the lower side moves to push the second compression spring 606 to contract, so that the air flow continues to flow downward through the shielding block 601 located on the lower side. When inhaling, the air flow is sucked out from the inner wall of the air inlet 607, so that the shielding block 601 located on the lower side is in contact with the inner wall of the movable groove 602, and the air flow passes through the shielding block 601 located on the upper side. By setting two shielding blocks 601, the direction of the respiratory air flow is guided, and the independent air flow direction is facilitated during exhalation training and inhalation training.

[0027] Secondly, by setting the air flow switching assembly, the air flow channel 2 is communicated with the air inlet groove 703, and the exhaust holes on the upper ends of the plurality of air flow cavities 3 are communicated with the collection groove 702. When the push head 707 is pushed to move the switching plate 706, the switching plate 706 moves to facilitate switching of the air inlet groove 703 and the collection groove 702. The air flow channel of the air inlet groove 703 is closed to facilitate the air flow in the air inlet 607 to enter and then push the air flow channel 2 to move for exhalation training. When the air flow channel of the collection groove 702 is closed, the air flow enters the air flow cavity 3 through the air inlet groove 703, pushes the resistance ball 4, and finally is discharged through the air inlet 607 to perform inhalation training. Thus, the two training modes of exhalation training and inhalation training are facilitated.

Claims

1. A multi-cavity adjustable resistance lung expansion trainer, comprising a mounting frame (1), wherein an airflow channel (2) is provided on the inner wall of the mounting frame (1), and a plurality of airflow cavities (3) are fixedly connected to the inner wall of the mounting frame (1), wherein resistance balls (4) are provided on the inner wall of the airflow cavities (3), characterized in that, Also includes: Independent resistance component, which is disposed between airflow channel (2) and airflow cavity (3) for independent resistance adjustment of multiple airflow cavities (3); An airflow guiding component is disposed on the inner wall of the airflow channel (2) for guiding the direction of breathing airflow; An airflow switching component is disposed on the top surface of the airflow channel (2) and is used to switch the direction of the breathing airflow.

2. The multi-chamber resistance adjustable lung expansion trainer according to claim 1, characterized in that: The independent resistance component includes multiple baffles (501), which are respectively disposed between the airflow cavity (3) and the airflow channel (2). The inner wall of the airflow channel (2) is provided with multiple limiting grooves (502), and the inner wall of the airflow channel (2) is provided with multiple sliding plates (503). The sliding plates (503) are slidably connected to the inner wall of the limiting grooves (502), and the bottom surface of the sliding plates (503) is fixedly connected with multiple first compression springs (504). The lower ends of the multiple first compression springs (504) are fixedly connected to the inner wall of the airflow channel (2). The side wall of the mounting bracket (1) is fixedly connected to a fixing plate (505). The side wall of the fixing plate (505) is provided with multiple threaded holes (506). The inner wall of the threaded holes (506) is threadedly connected to a threaded post (507). The side wall of the baffle plate (501) is provided with a rotating groove (508). The threaded post (507) is rotatably connected to the inner wall of the rotating groove (508).

3. The multi-chamber resistance adjustable lung expansion trainer according to claim 1, characterized in that: The airflow guiding component includes two shielding blocks (601), both of which are disposed on the inner wall of the airflow channel (2). The inner wall of the shielding block (601) has two movable slots (602). The inner wall of the movable slot (602) is fixedly connected to a fixing frame (603). The bottom surface of the fixing frame (603) is provided with a sliding hole (604). The inner wall of the sliding hole (604) is slidably connected to a sliding column (605). The upper end of the sliding column (605) is fixedly connected to the bottom surface of the shielding block (601). The surface of the sliding column (605) is fitted with a second compression spring (606). The inner wall of the airflow channel (2) is provided with an air inlet (607).

4. The multi-chamber resistance adjustable lung expansion trainer according to claim 1, characterized in that: The airflow switching assembly includes a switching box (701), which is fixedly connected to the top surface of the mounting bracket (1). The bottom surface of the switching box (701) is provided with a collecting groove (702) and an air inlet groove (703). A switching plate (706) is slidably connected to the inner wall of the air inlet groove (703). A push head (707) is slidably connected to the inner wall of the switching box (701). The bottom surface of the push head (707) is fixedly connected to the top surface of the switching plate (706).

5. A multi-cavity adjustable resistance lung expansion trainer according to claim 3, characterized in that: The side wall of the mounting bracket (1) is provided with a flexible air blowing assembly, which includes an air blowing pipe (801). The air blowing pipe (801) is located on the side wall of the mounting bracket (1). One end of the air blowing pipe (801) is fixedly connected to an air blowing head (802). The inner wall of the air inlet (607) is fixedly connected to a connector (803). The other end of the air blowing pipe (801) is fixedly connected to the inner wall of the connector (803).

6. A multi-cavity adjustable resistance lung expansion trainer according to claim 4, characterized in that: The top surface of the switching plate (706) is slidably connected to a compression plate (704), and the top surface of the compression plate (704) is fixedly connected to a plurality of third compression springs (705), the upper ends of the plurality of third compression springs (705) being fixedly connected to the inner wall of the air inlet groove (703).

7. A multi-chamber resistance adjustable lung expansion trainer according to claim 6, characterized in that: The inner walls of the air inlet groove (703) and the collection groove (702) are provided with mounting grooves (709), and the inner walls of the mounting grooves (709) are fixedly connected with filter layers (708).

8. A multi-chamber resistance adjustable lung expansion trainer according to claim 2, characterized in that: The top surface of the sliding plate (503) is provided with a sliding groove (509), and the shielding plate (501) is slidably connected to the inner wall of the sliding groove (509).

9. A multi-chamber resistance adjustable lung expansion trainer according to claim 5, characterized in that: The side wall of the mounting bracket (1) is fixedly connected with a plurality of plastic limiting brackets (804), and the surface of the air blowing pipe (801) is engaged with the inner wall of the plastic limiting bracket (804).

10. A multi-cavity resistance adjustable lung expansion trainer according to claim 1, characterized in that: The inner wall of the airflow cavity (3) is fixedly connected to a viewing window (9), and the surface of the airflow cavity (3) is provided with a scale groove (10).

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