Noise reduction structure for external counterpulsation

Abstract

The noise reduction structure comprises an air inlet pipe, the outer end of the air inlet pipe is detachably connected with a connecting pipe, the outer end of the connecting pipe is fixedly provided with an air inlet cover, the interior of the air inlet pipe is sequentially sleeved with a sliding ring and a sound insulation cotton sleeve from inside to outside, the sliding ring is fixedly connected with a pull rope, and the sound insulation cotton sleeve is fixedly connected with the pull rope. The end, away from the sliding ring, of the pull rope extends out of the air inlet pipe, and when the pull rope is pulled outwards, the pull rope pulls the sliding ring to drive the sound insulation cotton sleeve to move outwards. The sound insulation cotton sleeve is arranged in the air inlet pipe, noise generated in the air inlet pipe during air inlet can be reduced, the air inlet pipe is detached when the sound insulation cotton sleeve needs to be replaced, meanwhile, the sliding ring is pulled through the pull rope, the sliding ring drives the sound insulation cotton sleeve to be pulled out of the air inlet pipe, and the sound insulation cotton sleeve can be replaced more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction structures, in particular to a noise reduction structure for external counterpulsation. Background Art

[0002] The working principle of EECP is based on the human body's electrocardiogram R wave as a trigger signal, and during the diastole of the heart, special air bags are used to sequentially inflate and pressurize the limbs and buttocks. During use, since the inflation of the airbag needs to be guided by a pipeline, compressed air will produce a whistling sound when flowing in the pipeline, causing the patient to receive treatment in a noisy environment, which will affect the patient's psychological state. After searching, the Chinese patent application number CN202322528793.1 discloses a noise reduction structure for an external counterpulsation device, including an air intake pipe, one end of the air intake pipe is fixedly connected to a connecting pipe, the end of the connecting pipe away from the air intake pipe is fixedly provided with a square tube, and the end of the square tube away from the connecting pipe is fixedly provided with an air intake cover; the interior of the air intake pipe is provided with a plurality of sound insulation cotton sleeves, and the plurality of sound insulation cotton sleeves are arranged end to end from left to right; the wall of the air intake pipe and the positions corresponding to the plurality of sound insulation cotton sleeves are provided with replacement ports; the outer wall of the air intake pipe is rotatably provided with a sound insulation pipe, one side of the sound insulation pipe is provided with a strip opening, and the outer wall of the square tube is provided with a limiting mechanism for limiting the sound insulation pipe.

[0003] The above solution fills the air inlet and the air intake pipe with connected sound insulation cotton sleeves, which can effectively reduce the impact of noise. At the same time, a replacement port is set on the wall of the air intake pipe for replacing the aging sound insulation cotton sleeve. However, when replacing the sound insulation cotton sleeve, the above technical solution requires manual labor to reach into the replacement port and push the sound insulation cotton sleeve outward, resulting in a long replacement time and low replacement efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a noise reduction structure for extracorporeal anti-pulsation that is convenient for replacing the sound insulation cotton sleeve in the air intake pipe.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: to provide a noise reduction structure for external counterpulsation, including an air intake pipe, the outer end of the air intake pipe is detachably connected to a connecting pipe, the outer end of the connecting pipe is fixedly provided with an air intake cover, the interior of the air intake pipe is sequentially provided with a sliding ring and a sound insulation cotton sleeve from the inside to the outside, a pull rope is fixedly connected to the sliding ring, and the pull rope extends outward from the air intake pipe at one end away from the sliding ring. When the pull rope is stretched outward, the pull rope will pull the sliding ring to drive the sound insulation cotton sleeve to move outward.

[0006] Furthermore, the sliding ring is a foldable structure.

[0007] Furthermore, the sliding ring includes a first arc block, a second arc block and a connecting block, the first arc block and the second arc block are respectively hinged on opposite sides of the connecting block, the first arc block and the second arc block can be folded inward or flattened outward to each other, and the first arc block and the second arc block are respectively provided with a first abutting surface and a second abutting surface on opposite sides, when the first arc block and the second arc block are flattened outward to each other, the first abutting surface will abut against the second abutting surface, and the flip angle between the first arc block and the second arc block.

[0008] Furthermore, the air intake hood is arranged in a trumpet shape.

[0009] Furthermore, a sound insulation cotton ring is fixedly provided on the inner wall of the air intake hood.

[0010] Furthermore, the air inlet pipe is threadedly connected to the connecting pipe, and the inner diameter of the connecting pipe is adapted to the inner diameter of the sound insulation cotton sleeve to limit the movement of the sound insulation cotton sleeve.

[0011] Furthermore, the outer wall of the air intake pipe is provided with anti-slip textures.

[0012] Furthermore, one end of the pull rope away from the sliding ring is detachably connected to the air intake cover.

[0013] Furthermore, a hook is provided at one end of the pull rope away from the sliding ring, and a connecting strip for hanging the hook is provided on the inner wall of the air intake hood.

[0014] Furthermore, the sound insulation cotton sleeve is a multi-section structure, and the multiple sections of the sound insulation cotton sleeve are abutted against each other from left to right.

[0015] The utility model discloses a noise reduction structure for extracorporeal counterpulsation. By optimizing the small air inlet of a traditional air inlet pipe into an air inlet cover in the shape of a trumpet, the air inlet area can be increased. At the same time, a sound insulation cotton ring is arranged in the air inlet cover, which can reduce the noise generated when air is taken in through the air inlet. The sound insulation cotton sleeve is arranged in the air inlet pipe, which can also reduce the noise generated in the air inlet pipe during air intake. The sound insulation cotton sleeve in the air inlet pipe can be easily taken out for replacement by pulling the sliding ring with a pull rope, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 3 It is a schematic cross-sectional view of an embodiment of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the air intake pipe in one embodiment of the present utility model.

[0020] Figure 5 It is a structural diagram of a sliding ring in one embodiment of the utility model.

[0021] The meanings of the numbers in the accompanying drawings are: air intake pipe 1; internal thread 11; anti-slip groove 12; connecting pipe 2; air intake cover 3; sound insulation cotton ring 31; connecting strip 32; sound insulation cotton sleeve 4; sliding ring 5; first arc block 51; first abutting surface 511; second arc block 52; second abutting surface 521; connecting block 53; connecting shaft 54; pull rope 6; hook 61. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] See Figure 1 、 Figure 2 as well as Figure 3 The present invention provides a noise reduction structure for external counterpulsation, comprising an air intake pipe 1, the outer end of which is detachably connected to a connecting pipe 2, and the outer end of the connecting pipe 2 is fixedly provided with an air intake cover 3. The interior of the air intake pipe 1 is sequentially provided with a sliding ring 5 and a sound insulation cotton sleeve 4 from the inside to the outside. A pull rope 6 is fixedly connected to the sliding ring 5. The pull rope 6 extends outward from the air intake pipe 1 at one end away from the sliding ring 5. When the pull rope 6 is stretched outward, the pull rope 6 pulls the sliding ring 5 to move the sound insulation cotton sleeve 4 outward. When in use, the connecting pipe 2 is first connected to the air compressor, and then the air intake pipe 1 is connected to the connecting pipe 2. The sound insulation cotton sleeve 4 is provided in the air intake pipe 1 to reduce the noise generated in the air intake pipe 1 during air intake. When the sound insulation cotton sleeve 4 has been used for a long time, the air intake pipe 1 is removed, and the sliding ring 5 is pulled by the pull rope 6 at the same time. The sliding ring 5 drives the sound insulation cotton sleeve 4 to be pulled out of the air intake pipe 1, so that the sound insulation cotton sleeve 4 can be easily replaced.

[0024] In this embodiment, the air intake hood 3 is designed in a bell-mouth shape, with the small end of the air intake hood 3 connected to the connecting pipe 2. Designing the air intake hood 3 in a bell-mouth shape can increase the air intake area. A soundproofing ring 31 is also fixed to the inner wall of the air intake hood 3 to further reduce the noise generated by the air intake. Specifically, a groove is provided on the side wall of the air intake hood 3, and the soundproofing ring 31 is embedded in the groove.

[0025] In order to facilitate the placement of the sound insulation cotton sleeve 4 into the air intake pipe 1, the sound insulation cotton sleeve 4 is designed as a multi-section structure, and the multiple sections of the sound insulation cotton sleeve 4 are abutted against each other from left to right. With this design, the sound insulation cotton sleeve 4 can be inserted into the air intake pipe section by section, which is more convenient for installation and also easier to remove when replacing.

[0026] In the embodiment, the sliding ring 5 is a circular ring structure and the diameter of the sliding ring 5 is greater than or equal to the diameter of the sound insulation cotton sleeve 4. In order to facilitate the installation of the sliding ring 5 in the air inlet pipe 1, the sliding ring 5 is designed to be foldable. Specifically, the sliding ring 5 includes a first arc-shaped block 51, a second arc-shaped block 52, and a connecting block 53, the first arc-shaped block 51 and the second arc-shaped block 52 are respectively hinged to opposite sides of the connecting block 53, and the first arc-shaped block 51 and the second arc-shaped block 52 can be folded inward or unfolded outward. The first arc-shaped block 51 and the second arc-shaped block 52 are respectively provided with a first abutting surface 511 and a second abutting surface 512 on opposite sides, and when the first arc-shaped block 51 and the second arc-shaped block 52 are unfolded outward, the first abutting surface 511 will abut against the second abutting surface 512, and the turning angle between the first arc-shaped block 51 and the second arc-shaped block 52. By this design, the sound insulation cotton sleeve 4 can be installed first, and then the end of the pull rope 6 is held by hand, and the sliding ring 5 is folded and placed in the sound insulation cotton sleeve 4. At this time, only the first arc-shaped block 51 and the second arc-shaped block 52 need to be folded, and at this time, the first arc-shaped block 51 and the second arc-shaped block 52 are placed in the sound insulation cotton sleeve 4 along the diameter direction, and after the first arc-shaped block 51 and the second arc-shaped block 52 slide to the other end of the sound insulation cotton sleeve 4, the first arc-shaped block 51 and the second arc-shaped block 52 are unfolded relative to each other and abut against the side surface of the sound insulation cotton sleeve 4. When the first arc-shaped block 51 and the second arc-shaped block 52 are unfolded, the first abutting surface 511 and the second abutting surface 521 will limit the turning of the first arc-shaped block 51 and the second arc-shaped block 52, so that the first arc-shaped block 51 and the second arc-shaped block 52 cannot be turned in the opposite direction, and the first arc-shaped block 51 and the second arc-shaped block 52 can be completely abutted against the end surface of the sound insulation cotton sleeve 4. If the sliding ring 5 cannot be folded, the sliding ring 5 needs to be placed at one end of the air inlet pipe 1, and the end of the pull rope 6 needs to be held by hand at the same time. At this time, the sound insulation cotton sleeve 4 needs to be inserted into the air inlet pipe 1 through the pull rope 6, which is not convenient and increases the installation difficulty.

[0027] Please continue to see Figure 4After the sound insulation cotton sleeve 4 is installed, the air inlet pipe 1 is connected with the connecting pipe 2. In the embodiment, the air inlet pipe 1 is threadedly connected with the connecting pipe 2, and the inner diameter of the connecting pipe 2 is matched with the inner diameter of the sound insulation cotton sleeve 4 to limit the movement of the sound insulation cotton sleeve 4. Specifically, the inner wall of the end of the air inlet pipe 1 close to the connecting pipe 2 is provided with an internal thread 11, and the outer surface of the end of the connecting pipe 2 close to the air inlet pipe 1 is provided with an external thread matched with the internal thread 11, and the air inlet pipe 1 is threadedly connected with the connecting pipe 2 through the internal thread 11 and the external thread. The air inlet pipe 1 and the connecting pipe 2 are connected through the threaded connection, so that the connection is better. Meanwhile, the inner diameter of the connecting pipe 2 is matched with the inner diameter of the sound insulation cotton sleeve 4, so that the connecting pipe 2 can abut and limit the sound insulation cotton sleeve 4 after the air inlet pipe 1 and the connecting pipe 2 are connected, and the stability is better. In order to increase the holding force of the hand on the air inlet pipe 1 during installation, the outer wall of the air inlet pipe 1 is provided with an anti-skid pattern 12. The anti-skid pattern 12 can increase the friction force between the outer surface of the air inlet pipe 1 and the hand, so that the slipping during the screwing is avoided.

[0028] Please continue to see Figure 5 In order to automatically take out the sound insulation cotton sleeve 4 during disassembly, the end of the pull rope 6 away from the sliding ring 5 is detachably connected in the air inlet cover 3. Specifically, the end of the pull rope 6 away from the sliding ring 5 is provided with a hook 61, and the inner wall of the air inlet cover 3 is provided with a connecting strip 32 for hanging the hook 61. The two ends of the connecting strip 32 are fixedly connected to the inner surface of the air inlet cover 3, and the hook is hung on the connecting strip 32 at this time. During disassembly, the air inlet pipe 1 is rotated to move the air inlet pipe 1 away from the connecting pipe 2. At this time, since the hook 61 is hung on the connecting strip 2, the sliding ring 5 will move towards the air inlet cover 3, and the sound insulation cotton sleeve 4 will also move towards the air inlet cover 3. When the air inlet pipe 1 is completely disassembled, the pull rope 6 is pulled to make the sliding ring 5 slide out of the air inlet pipe 1, and at this time the sound insulation cotton sleeve 4 is completely removed.

[0029] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicability of the present application.

Claims

1. A noise reduction structure for external counterpulsation, comprising an air intake pipe (1), the outer end of the air intake pipe (1) being detachably connected to a connecting pipe (2), the outer end of the connecting pipe (2) being fixedly provided with an air intake cover (3), characterized in that: The interior of the air intake pipe (1) is sequentially sleeved with a sliding ring (5) and a sound insulation cotton sleeve (4) from the inside out, and a pull rope (6) is fixedly connected to the sliding ring (5). One end of the pull rope (6) is away from the sliding ring (5) and extends outward from the air intake pipe (1). When the pull rope (6) is stretched outward, the pull rope (6) pulls the sliding ring (5) to drive the sound insulation cotton sleeve (4) to move outward.

2. The noise reduction structure for external counterpulsation according to claim 1, characterized in that: The sliding ring (5) is a foldable structure.

3. The noise reduction structure for external counterpulsation according to claim 2, characterized in that: The sliding ring (5) includes a first arc block (51), a second arc block (52) and a connecting block (53). The first arc block (51) and the second arc block (52) are respectively hinged on opposite sides of the connecting block (53). The first arc block (51) and the second arc block (52) can be folded inward or flattened outward. The first arc block (51) and the second arc block (52) are respectively provided with a first abutting surface (511) and a second abutting surface (512) on opposite sides. When the first arc block (51) and the second arc block (52) are flattened outward, the first abutting surface (511) will abut against the second abutting surface (512). The flip angle between the first arc block (51) and the second arc block (52) is 0.

4. The noise reduction structure for external counterpulsation according to claim 1, characterized in that: The air inlet cover (3) is arranged in a trumpet shape.

5. The noise reduction structure for external counterpulsation according to claim 4, characterized in that: A sound insulation cotton ring (31) is fixedly provided on the inner wall of the air intake cover (3).

6. The noise reduction structure for external counterpulsation according to claim 1, characterized in that: The air inlet pipe is threadedly connected to the connecting pipe (2), and the inner diameter of the connecting pipe (2) is adapted to the inner diameter of the sound insulation cotton sleeve (4) to limit the movement of the sound insulation cotton sleeve (4).

7. The noise reduction structure for external counterpulsation according to claim 6, characterized in that: The outer wall of the air intake pipe (1) is provided with anti-slip lines (12).

8. The noise reduction structure for external counterpulsation according to claim 1, characterized in that: One end of the pull rope (6) away from the sliding ring (5) is detachably connected to the inside of the air intake cover (3).

9. The noise reduction structure for external counterpulsation according to claim 8, characterized in that: A hook (61) is provided at one end of the pull rope (6) away from the sliding ring (5), and a connecting strip (32) for hanging the hook (61) is provided on the inner wall of the air intake cover (3).

10. The noise reduction structure for external counterpulsation according to claim 1, characterized in that: The sound insulation cotton sleeve (4) is a multi-section structure, and the multiple sections of the sound insulation cotton sleeve (4) abut against each other from left to right.

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