Hemodialysis monitoring nursing instrument with massage function

Abstract

The invention discloses a hemodialysis monitoring nursing instrument with a massage function, and belongs to the technical field of medical auxiliary instruments.The hemodialysis monitoring nursing instrument comprises a dialyzer placed on the side edge of a sickbed, a support is fixedly installed on the outer side of the dialyzer, a supporting bracket is installed on the support, and a breathable cushion is fixedly arranged on the upper surface of the supporting bracket; the support and the supporting bracket are connected through an adjusting assembly, a fixing plate is rotationally installed on the supporting bracket, an adjusting plate is slidably installed in a cavity in the inner side of the supporting bracket, an adjusting assembly is connected between the output end of the motor and the adjusting plate, and through holes are evenly formed in the upper surface of the supporting bracket. And massage pieces are mounted in the through holes in a clearance manner. According to the hemodialysis monitoring nursing instrument with the massage function, limbs of a patient can be effectively limited and supported, the connection stability of a dialysis pipeline is ensured, the limbs of the patient can be effectively massaged in the dialysis monitoring process, and discomfort caused after the limbs are pressed for a long time is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of medical auxiliary equipment, and in particular to a hemodialysis monitoring and nursing instrument with a massage function. Background Art

[0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It removes metabolic wastes from the body and maintains electrolyte and acid-base balance by draining blood from the body to the dialyzer through diffusion, ultrafiltration, adsorption and convection. During the hemodialysis process, a hemodialysis monitoring and nursing device is required.

[0003] The prior art (application number: 202223595191.X, Chinese patent with application date of 2022-12-30) discloses a hemodialysis monitoring and nursing instrument, including a shell, one side of which is fixedly connected to a fixed block by screws, a circular groove is provided on the fixed block, a rotating column is rotatably installed inside the circular groove, a rotating block is fixedly connected to the top of the rotating column by screws, a placement arm guard is slidably mounted on the rotating block, a movable arm guard is rotatably installed on the top of the placement arm guard, through the arrangement of structures such as a pull rod and a clamping block, the pull rod is pulled to move the clamping block, so that the placement arm guard and the movable arm guard can be installed, after the dialysis is completed, the moving arm drives the placement arm guard and the movable arm guard to move, so that the rope body pulls the pull rod, so that the clamping block moves, so that the movable arm guard can be removed from the placement arm guard, thereby eliminating the need for a doctor to remove it, and the practicality is stronger; although it can achieve stable support and fixation of the arm, the use of a single fixing structure causes the patient's limbs to always remain under pressure during treatment, which makes the limbs prone to numbness and discomfort, and there are certain usage defects. Summary of the invention

[0004] The purpose of the present invention is to provide a hemodialysis monitoring and nursing instrument with a massage function to solve the problem raised by the above background technology that the hemodialysis monitoring and nursing instruments currently on the market may cause compression and numbness of the patient's limbs during use, thereby affecting the comfort of use.

[0005] To achieve the above object, the present invention provides the following technical solution: a hemodialysis monitoring and nursing instrument with massage function, comprising a dialyzer placed on the side of a bed, a bracket fixedly installed on the outside of the dialyzer, a support bracket installed on the bracket, and a breathable cushion fixedly arranged on the upper surface of the support bracket; The bracket and the support bracket are connected by an adjustment assembly, and a fixing plate is rotatably mounted on the support bracket, and a fixing cylinder is fixedly mounted on the side wall of the support bracket, and an adjusting screw is threadedly connected to the lower end of the fixing cylinder, and a pressing plate is rotatably connected to the upper end of the adjusting screw, and an air storage bag is fixedly connected to the upper end of the pressing plate, and a movable plate is fixedly mounted above the air storage bag, a transmission member is connected between the movable plate and the shaft of the support bracket, and a limited air bag is fixedly mounted on the inner wall of the fixing plate; The side wall of the support bracket is fixedly mounted with a motor, and an adjustment plate is slidably mounted in the inner cavity of the support bracket, and an adjustment component is connected between the motor output end and the adjustment plate, and through holes are evenly opened on the upper surface of the support bracket, and massage parts are installed in the gaps in the through holes.

[0006] Preferably, the adjustment assembly includes a fixing screw fixedly mounted on the bracket, and the upper end of the fixing screw is evenly fixedly connected with an elastic connecting piece, and the outer side of the fixing screw is threadedly connected with a locking nut, and at the same time, the lower end of the supporting bracket is fixedly connected with a connecting ball, the connecting ball and the elastic connecting piece are ball-connected, and the locking nut pushes the elastic connecting piece to clamp the connecting ball during the upward movement.

[0007] Preferably, the adjusting screw drives the pressure plate to be raised and lowered on the inner side of the fixed cylinder during rotation, and the pressure plate drives the movable plate to move synchronously on the inner side of the fixed cylinder through the air storage bag, and a rack is fixedly installed on the upper end of the movable plate, and a gear is fixedly installed on the shaft of the fixed plate, and the rack and the gear are meshingly connected.

[0008] Preferably, the air storage bag and the limiting air bag are connected by a pipe, and when the movable plate cannot move upward, the pressure plate squeezes the air storage bag, and after the air storage bag is compressed, air is supplied to the limiting air bag through the pipe, and the limiting air bag is arranged in an arc-shaped structure, and after the limiting air bag is inflated, it fits and clamps the patient's limbs.

[0009] Preferably, the adjustment assembly includes a reciprocating screw fixedly mounted on the output end of the motor and a connector fixedly mounted on the outside of the adjustment plate, and the reciprocating screw and the connector are threadedly connected, and the adjustment plate is slidably adjusted on the inside of the support bracket.

[0010] Preferably, a push plate is fixedly mounted on the upper surface of the adjustment plate, and both sides of the upper end of the push plate are provided with inclined surface structures, and the inclined surface of the push plate contacts and pushes the lower end of the massage part during the reciprocating movement of the adjustment plate.

[0011] Preferably, a spring is fixedly connected between the massage piece and the inner wall of the cavity of the support bracket, and the massage piece is elastically raised and lowered under the push of the push plate, and the massage piece protrudes from the upper surface of the support bracket during the rising process.

[0012] Preferably, a cavity is opened on the inner side of the massage piece, and an adjusting cylinder is fixedly connected to the outer side of the massage piece, and the adjusting cylinder and the cavity of the massage piece are communicated, and a sealing rubber sheet is slidingly provided on the inner side of the adjusting cylinder for interference sliding, and a push rod is fixedly connected to the upper end of the sealing rubber sheet, and the upper end of the push rod is fixedly connected to the inner wall of the cavity of the support bracket, and the sealing rubber sheet slides along the inner side of the adjusting cylinder to compress the air during the upward movement of the massage piece, and the massage piece is made of heat-conductive material.

[0013] Preferably, an air delivery bag is fixedly connected between the adjustment plate and the inner wall of the cavity of the support bracket, and the outer sides of the air delivery bag are respectively connected to an air intake pipe and an exhaust pipe, and the air intake pipe passes through the support bracket, while the exhaust pipe is located on the inner side of the support bracket, and both the air intake pipe and the exhaust pipe are provided with a one-way valve structure.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the hemodialysis monitoring and nursing instrument with massage function can effectively limit and support the patient's limbs, ensure the connection stability of the dialysis pipeline, and can effectively massage the patient's limbs during the dialysis monitoring process to avoid discomfort caused by long-term pressure on the limbs. The specific contents are as follows; 1. A bracket and a support bracket are provided. By rotating the bracket, the placement angle of the bracket can be adjusted to facilitate the patient to support the limbs. By rotating and moving the locking nut upward, the locking nut can be pushed against the elastic connector to ensure that the elastic connector can clamp the connecting ball, thereby locking the bracket placement angle and ensuring the support stability.

[0015] 2. A fixing plate, an adjusting screw, an air storage bag and a limiting air bag are provided. The patient's limbs are placed on the supporting bracket. The adjusting screw is rotated to drive the pressing plate to move upward on the inner side of the fixing tube. At this time, the pressing plate will drive the movable plate and the rack to move upward through the air storage bag, so that the rack and the gear are meshed to drive the fixing plate to rotate, thereby initially limiting the patient's limbs. When the fixing plate cannot rotate, continue to rotate the adjusting screw. At this time, the pressing plate will squeeze the air storage bag, so that part of the gas in the air storage bag enters the limiting air bag through the pipe, thereby causing the limiting air bag to expand to clamp and fix the limbs of patients of different body sizes.

[0016] 3. An adjustment plate and massage pieces are provided. By controlling the motor to drive the reciprocating screw to rotate, the reciprocating screw can drive the adjustment plate to slide back and forth in the cavity of the support bracket, and then the push plate pushes multiple massage pieces to perform elastic lifting and lowering adjustments, thereby achieving auxiliary massage of the patient's limbs.

[0017] An adjusting cylinder and an air delivery bag are further provided, so that when the massage piece is lifted and lowered reciprocatingly, the sealing film will slide reciprocatingly on the inner side of the adjusting cylinder to reciprocately compress the gas inside the massage piece, so that heat is generated inside the massage piece. At the same time, the air delivery bag can automatically evacuate and blow air during the reciprocating movement of the adjusting plate, ensuring that the heated air can be blown toward the patient's limbs through the through hole, thereby further improving the support comfort of the patient's limbs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the support bracket and the fixing plate of the present invention; Figure 3 It is a schematic diagram of the connection structure between the bracket and the support bracket of the present invention; Figure 4 It is a schematic diagram of the installation structure of the air storage bag and the limiting air bag of the present invention; Figure 5 This is a schematic diagram of the top view of the support bracket of the present invention; Figure 6 This is a schematic diagram of the main cross-sectional structure of the support bracket of the present invention; Figure 7 It is a schematic diagram of the side cross-sectional structure of the support bracket of the present invention; Figure 8 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. dialyzer; 2. bracket; 201. fixing screw; 202. elastic connector; 203. locking nut; 3. supporting bracket; 301. connecting ball; 4. fixing plate; 5. fixing cylinder; 6. adjusting screw; 7. pressing plate; 8. air storage bag; 9. movable plate; 10. rack; 11. gear; 12. limiting air bag; 13. breathable cushion; 14. motor; 15. reciprocating screw; 16. adjusting plate; 1601. push plate; 17. connecting piece; 18. through hole; 19. massage piece; 20. spring; 21. adjusting cylinder; 22. sealing film; 23. push rod; 24. air delivery bag. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: The existing hemodialysis monitoring and nursing device is not convenient to support and limit the patient's limbs in a convenient and stable manner during use, which makes it easy for the tube to fall off during the dialysis process. In order to solve this technical problem, this embodiment discloses the following technical content, please refer to Figure 1-Figure 4 As shown; A hemodialysis monitoring and nursing instrument with massage function comprises a dialyzer 1 placed on the side of a hospital bed, a bracket 2 is fixedly installed on the outer side of the dialyzer 1, a support bracket 3 is installed on the bracket 2, and a breathable cushion 13 is fixedly arranged on the upper surface of the support bracket 3; the bracket 2 and the support bracket 3 are connected by an adjustment component, and a fixing plate 4 is rotatably installed on the support bracket 3, and a fixing cylinder 5 is fixedly installed on the side wall of the support bracket 3, and at the same time, an adjusting screw 6 is threadedly connected to the lower end of the fixing cylinder 5, and a pressing plate 7 is rotatably connected to the upper end of the adjusting screw 6, and an air storage bag 8 is fixedly connected to the upper end of the pressing plate 7, and a movable plate 9 is fixedly installed above the air storage bag 8, a transmission member is connected between the movable plate 9 and the shaft of the support bracket 3, and a limited air bag 12 is fixedly installed on the inner wall of the fixing plate 4; The adjustment assembly includes a fixing screw 201 fixedly mounted on the bracket 2, and the upper end of the fixing screw 201 is evenly fixedly connected with an elastic connecting piece 202, and the outer side of the fixing screw 201 is threadedly connected with a locking nut 203, and at the same time, the lower end of the support bracket 3 is fixedly connected with a connecting ball 301, the connecting ball 301 and the elastic connecting piece 202 are ball-connected, and the locking nut 203 pushes the elastic connecting piece 202 to clamp the connecting ball 301 during the upward movement.

[0022] During the rotation of the adjusting screw 6, the pressure plate 7 is driven to be raised and lowered on the inner side of the fixed cylinder 5, and the pressure plate 7 drives the movable plate 9 to move synchronously on the inner side of the fixed cylinder 5 through the air storage bag 8, and a rack 10 is fixedly installed on the upper end of the movable plate 9, and a gear 11 is fixedly installed on the shaft of the fixed plate 4, and the rack 10 and the gear 11 are meshed and connected.

[0023] The air storage bag 8 and the limiting air bag 12 are connected by a pipeline, and when the movable plate 9 cannot move upward, the pressure plate 7 squeezes the air storage bag 8. After the air storage bag 8 is compressed, air is supplied to the limiting air bag 12 through the pipeline. The limiting air bag 12 is arranged in an arc-shaped structure, and after the limiting air bag 12 is expanded, it fits and clamps the patient's limbs.

[0024] By adopting the above technical solution, when the patient needs to perform dialysis operation, the patient lies on the bed and places the patient's hands on the support bracket 3. The patient can adjust the support angle of the support bracket 3 according to the comfort level. After the adjustment is completed, the locking nut 203 is rotated to move the locking nut 203 upward through the threaded connection, thereby pushing the multiple elastic connectors 202 to gather and hold the connecting ball 301 tightly, thereby locking the angle of the bracket 2. Subsequently, the adjusting screw 6 is rotated to drive the pressure plate 7 at its upper end to move upward on the inner side of the fixed cylinder 5. At this time, the pressure plate 7 will push the air storage bag 8 and the movable The plate 9 moves up synchronously, and the movable plate 9 will drive the rack 10 to move up and mesh with the gear 11, and then drive the fixed plate 4 to rotate through the gear 11, so that the fixed plate 4 cooperates with the supporting bracket 3 to initially limit the patient's limbs. When the fixed plate 4 cannot continue to rotate, continue to rotate the adjusting screw 6 to drive the pressing plate 7 to move up. At this time, the pressing plate 7 will squeeze the air storage bag 8, so that the gas in the air storage bag 8 enters the limiting air bag 12 through the pipeline, causing the limiting air bag 12 to expand. The expanded limiting air bag 12 can fit the limbs of patients of different body shapes, thereby realizing the limiting fixation of the patient's limbs and avoiding the loosening of the pipeline due to limb twisting.

[0025] Embodiment 2: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiment 1. The existing hemodialysis monitoring and nursing instrument is inconvenient to automatically massage the patient's limbs during use, which causes the patient's limbs to be under long-term pressure and discomfort. In order to further solve this technical problem, this embodiment discloses the following technical content, as shown in Figure **; a motor 14 is fixedly installed on the side wall of the support bracket 3, and an adjustment plate 16 is slidably installed in the inner cavity of the support bracket 3, and an adjustment component is connected between the output end of the motor 14 and the adjustment plate 16, and the upper surface of the support bracket 3 is evenly provided with through holes 18, and a massage part 19 is installed in the gap in the through hole 18.

[0026] The adjustment component includes a reciprocating screw rod 15 fixedly mounted on the output end of the motor 14 and a connector 17 fixedly mounted on the outer side of the adjustment plate 16, and the reciprocating screw rod 15 and the connector 17 are threadedly connected, and the adjustment plate 16 is slidably adjusted on the inner side of the support bracket 3, a push plate 1601 is fixedly mounted on the upper surface of the adjustment plate 16, and both sides of the upper end of the push plate 1601 are inclined surface structures, and during the reciprocating movement of the adjustment plate 16, the inclined surface of the push plate 1601 contacts and pushes the lower end of the massage member 19, a spring 20 is fixedly connected between the massage member 19 and the inner wall of the cavity of the support bracket 3, and the massage member 19 is elastically lifted and lowered under the push of the push plate 1601, and the massage member 19 protrudes from the upper surface of the support bracket 3 during the rising process, and the massage member 19 9 is provided with a cavity, and an adjusting cylinder 21 is fixedly connected to the outer side of the massage piece 19, and the adjusting cylinder 21 and the cavity of the massage piece 19 are communicated, and a sealing rubber sheet 22 is provided on the inner side of the adjusting cylinder 21 for interference sliding, and a push rod 23 is fixedly connected to the upper end of the sealing rubber sheet 22, and the upper end of the push rod 23 is fixedly connected to the inner wall of the cavity of the support bracket 3, and the sealing rubber sheet 22 slides along the inner side of the adjusting cylinder 21 to compress the air during the upward movement of the massage piece 19, and the massage piece 19 is made of heat-conducting material.

[0027] An air delivery bag 24 is fixedly connected between the adjustment plate 16 and the inner wall of the cavity of the support bracket 3, and the outer sides of the air delivery bag 24 are respectively connected to an air intake pipe and an exhaust pipe, and the air intake pipe passes through the support bracket 3, while the exhaust pipe is located on the inner side of the support bracket 3, and both the air intake pipe and the exhaust pipe are provided with a one-way valve structure.

[0028] Through the above technical solution, the motor 14 is controlled to start, so that the motor 14 drives the reciprocating screw rod 15 and the adjustment plate 16 to be threadedly connected, so that the adjustment plate 16 slides back and forth inside the cavity of the support bracket 3. During the sliding process of the adjustment plate 16, the upper end inclined surface of the push plate 1601 evenly arranged above it will contact the lower end of the massage piece 19 and push the massage piece 19 to perform elastic lifting and lowering adjustment. At this time, the upper end of the massage piece 19 will move up through the through hole 18 to push the breathable cushion 13, thereby effectively massaging the patient's limbs and relaxing the limbs. At the same time, the massage piece 19 moves upward. During the repeated lifting and lowering adjustment process, the push rod 23 will drive the sealing film 22 to move back and forth on the inner side of the adjusting cylinder 21, thereby realizing the reciprocating compression of the air inside the adjusting cylinder 21 and the massage member 19, thereby generating heat and further improving the massage effect. In addition, the adjusting plate 16 will squeeze and stretch the air delivery bag 24 during the reciprocating movement, so that the air delivery bag 24 automatically extracts the air outside the supporting bracket 3 and delivers air to the inner side of the supporting bracket 3, so that the gas is heated and blown toward the patient's limbs through the through hole 18, thereby achieving drying and auxiliary heat preservation of the patient's limbs, and further improving the comfort of limb placement.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hemodialysis monitoring and nursing device with a massage function, comprising a dialyzer (1) placed on the side of a hospital bed, a bracket (2) fixedly mounted on the outside of the dialyzer (1), a support bracket (3) mounted on the bracket (2), and a breathable cushion (13) fixedly mounted on the upper surface of the support bracket (3); It is characterized in that The support (2) and the support bracket (3) are connected via an adjustment assembly, and a fixing plate (4) is rotatably mounted on the support bracket (3), and a fixing cylinder (5) is fixedly mounted on the side wall of the support bracket (3), and an adjusting screw (6) is threadedly connected to the lower end of the fixing cylinder (5), and a pressing plate (7) is rotatably connected to the upper end of the adjusting screw (6), and an air storage bag (8) is fixedly connected to the upper end of the pressing plate (7), and a movable plate (9) is fixedly mounted above the air storage bag (8), a transmission member is connected between the movable plate (9) and the shaft of the support bracket (3), and a limiting air bag (12) is fixedly mounted on the inner wall of the fixing plate (4); A motor (14) is fixedly mounted on the side wall of the support bracket (3), an adjustment plate (16) is slidably mounted in the inner cavity of the support bracket (3), an adjustment component is connected between the output end of the motor (14) and the adjustment plate (16), and through holes (18) are evenly formed on the upper surface of the support bracket (3), and massage elements (19) are mounted in the gaps in the through holes (18).

2. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: The adjustment assembly comprises a fixing screw (201) fixedly mounted on the bracket (2), wherein the upper end of the fixing screw (201) is evenly fixedly connected to an elastic connecting piece (202), and the outer side of the fixing screw (201) is threadedly connected to a locking nut (203), and the lower end of the supporting bracket (3) is fixedly connected to a connecting ball (301), wherein the connecting ball (301) and the elastic connecting piece (202) are ball-connected, and during the upward movement of the locking nut (203), the elastic connecting piece (202) is pushed to clamp the connecting ball (301).

3. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: During the rotation of the adjusting screw (6), the pressure plate (7) is driven to be raised and lowered inside the fixed cylinder (5), and the pressure plate (7) drives the movable plate (9) to move synchronously inside the fixed cylinder (5) through the air storage bag (8), and a rack (10) is fixedly mounted on the upper end of the movable plate (9), and a gear (11) is fixedly mounted on the shaft of the fixed plate (4), and the rack (10) and the gear (11) are meshingly connected.

4. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: The air storage bag (8) and the limiting air bag (12) are connected via a pipeline, and when the movable plate (9) cannot move upward, the pressure plate (7) squeezes the air storage bag (8), and after the air storage bag (8) is compressed, air is supplied to the limiting air bag (12) via the pipeline, and the limiting air bag (12) is arranged in an arc-shaped structure, and after the limiting air bag (12) is expanded, it fits and clamps the patient's limbs.

5. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: The adjustment assembly comprises a reciprocating screw (15) fixedly mounted on the output end of the motor (14) and a connecting piece (17) fixedly mounted on the outside of the adjustment plate (16), wherein the reciprocating screw (15) and the connecting piece (17) are threadedly connected, and the adjustment plate (16) is slidably adjusted on the inside of the support bracket (3).

6. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: A push plate (1601) is fixedly mounted on the upper surface of the adjustment plate (16), and both sides of the upper end of the push plate (1601) are provided with inclined surface structures, and the inclined surface of the push plate (1601) contacts the lower end of the massage member (19) during the reciprocating movement of the adjustment plate (16).

7. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: A spring (20) is fixedly connected between the massage piece (19) and the inner wall of the cavity of the support bracket (3), and the massage piece (19) is elastically raised and lowered under the push of the push plate (1601), and the massage piece (19) protrudes from the upper surface of the support bracket (3) during the rising process.

8. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: The massage piece (19) has a cavity on the inner side, and an adjustment cylinder (21) is fixedly connected to the outer side of the massage piece (19), and the adjustment cylinder (21) and the cavity of the massage piece (19) are in communication, and a sealing rubber sheet (22) is provided on the inner side of the adjustment cylinder (21) for interference sliding, and a push rod (23) is fixedly connected to the upper end of the sealing rubber sheet (22), and the upper end of the push rod (23) is fixedly connected to the inner wall of the cavity of the support bracket (3), and when the massage piece (19) moves upward, the sealing rubber sheet (22) slides along the inner side of the adjustment cylinder (21) to compress air, and the massage piece (19) is made of a heat-conducting material.

9. The hemodialysis monitoring and nursing device with massage function according to claim 1, characterized in that: An air delivery bag (24) is fixedly connected between the adjustment plate (16) and the inner wall of the cavity of the support bracket (3), and an air intake pipe and an exhaust pipe are respectively connected to the outside of the air delivery bag (24), and the air intake pipe passes through the support bracket (3), while the exhaust pipe is located on the inner side of the support bracket (3), and both the air intake pipe and the exhaust pipe are provided with a one-way valve structure.

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