An airbag pressure detection device

Abstract

This utility model discloses an airbag pressure detection device, belonging to the technical field of detection equipment. It aims to solve the problem that when fixing the airbag and nozzle together using tape, air leakage easily occurs, leading to inaccurate detection results and affecting the detection effect. The key technical points are: a device body including an air supply pipe, a nozzle, and a pressure detector; a fixed pipe is fixedly connected to the air supply pipe near the nozzle; a fixed ring is fixedly connected to the outer wall of the fixed pipe; a movable ring is fixedly connected to the outer wall of the fixed pipe; and a flexible layer is fixedly connected between the movable ring and the fixed ring. This utility model, through the setting of clay and the flexible layer, utilizes their deformation capabilities to fill the gap between the airbag and the flexible layer, thereby improving the sealing effect between the airbag and the flexible layer, preventing air leakage inside the airbag, and thus improving the accuracy of air pressure detection and the detection effect.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and more specifically, it relates to an airbag pressure testing device. Background Technology

[0002] As a medical device, the air bag, including the anesthesia reservoir bag (also known as a breathing bag), is an important component of the anesthesia machine. It is used to store mixed gases, assist or control the patient's breathing, and observe the range of motion of the chest wall during manual ventilation.

[0003] Currently, during the production of anesthesia reservoirs, to prevent quality problems such as air leakage, a pressure testing device is typically used to check the air pressure inside the reservoir. During the testing process, the nozzle on the testing device is inserted into the opening of the reservoir, and the reservoir is secured to the nozzle with tape. The side walls of the reservoir and the nozzle are then pressed against each other. Air is then injected into the reservoir through the testing device, and the air pressure inside the reservoir is monitored in real time using a pressure gauge. This method effectively tests the air pressure inside the reservoir.

[0004] However, when fixing the airbag and the nozzle together, the opening of the anesthesia reservoir is usually made of soft, elastic latex or silicone material with a smooth surface, while the detection nozzle is made of rigid material. It is difficult to achieve a complete fit between the soft and rigid surfaces by simple external force (tape wrapping), which inevitably results in microscopic gaps and air leakage. This leads to inaccurate test results and affects the test effectiveness.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an airbag pressure detection device that solves the problem that air leakage easily occurs when fixing the airbag and nozzle with tape, leading to inaccurate detection results and affecting the detection effect.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an airbag pressure detection device, comprising a device body with an air supply pipe, a nozzle, and a pressure detector, wherein a fixed pipe is fixedly connected to the air supply pipe near the nozzle, a fixed ring and a movable ring are fixedly connected to the outer wall of the fixed pipe, a flexible layer is fixedly connected between the movable ring and the fixed ring, clay is filled between the flexible layer and the fixed pipe, and a driving component is provided on the fixed pipe for driving the movable ring to move along its own side wall.

[0008] The present invention is further configured such that: the driving component includes an adjusting ring rotatably connected to the moving ring, the inner wall of the adjusting ring is threadedly connected to a fixed pipe, a limiting block is fixedly connected to the moving ring, and an annular groove for the limiting block to rotate is provided on the outer wall of the adjusting ring.

[0009] The present invention is further configured such that a sealing gasket that contacts the side wall of the fixed tube is fixedly connected to the adjusting ring.

[0010] The present invention is further configured such that: a through hole is provided on the movable ring, and a cover is detachably connected to the through hole.

[0011] The present invention is further configured such that: an installation tube is fixedly connected to the through hole, and the cover and the installation tube are threadedly connected.

[0012] The present invention is further configured such that the moving ring and the fixed ring are inclined on the side closest to the clay.

[0013] In summary, this utility model has the following beneficial effects:

[0014] By incorporating clay and a flexible layer, the deformation capacity of the clay can be used to fill the gap between the airbag and the flexible layer, thereby improving the sealing effect between the airbag and the flexible layer, preventing air leakage inside the airbag, and thus improving the accuracy and effectiveness of air pressure testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A;

[0017] Figure 3 This is a cross-sectional view of the present invention.

[0018] In the diagram: 1. Gas supply pipe; 2. Nozzle; 3. Gas pressure detector; 4. Device body; 5. Fixed pipe; 6. Fixed ring; 7. Moving ring; 8. Flexible layer; 9. Clay; 10. Adjusting ring; 11. Limiting block; 12. Annular groove; 13. Sealing gasket; 14. Through hole; 15. Cover; 16. Installation pipe. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] An airbag pressure detection device, such as Figures 1-3 As shown, the device body 4 includes an air supply pipe 1, a nozzle 2, and a pressure detector 3. A fixed pipe 5 is fixedly connected to the air supply pipe 1 near the nozzle 2. A fixed ring 6 and a movable ring 7 are fixedly connected to the outer wall of the fixed pipe 5. A flexible layer 8 is fixedly connected between the movable ring 7 and the fixed ring 6. The flexible layer 8 can be made of rubber or silicone and has strong deformation ability and flexibility. Clay 9 is filled between the flexible layer 8 and the fixed pipe 5. The fixed pipe 5 is provided with a drive component for driving the movable ring 7 to move along its own side wall.

[0023] In this embodiment, the flexible layer 8 is made of silicone rubber with a Shore A hardness of 40 and a thickness of 3 mm. This choice of hardness and thickness allows the flexible layer 8 to maintain its shape while also allowing sufficient deformation under the pressure of the clay 9 to conform to the inner wall of the airbag. Preferably, the clay 9 is a non-curing industrial butyl sealant with high adhesion and plasticity. This material can flow well under pressure to fill irregular gaps and can basically maintain its shape after the pressure is removed, ensuring the durability and reliability of the seal.

[0024] When testing the air pressure of the airbag, nozzle 2 is inserted into the opening of the airbag, and flexible layer 8 is placed at the opening. Then, tape is used to bind the airbag to flexible layer 8. The driving component then drives the moving ring 7 to move downward along the side wall of the fixed tube 5, and the moving ring 7 squeezes the clay 9 located between itself and the fixed ring 6, moving the clay 9 towards the inner wall of the airbag. At the same time, the flexible layer 8 deforms in the same direction. When the flexible layer 8 and the inner wall of the airbag come into contact with each other, the moving ring 7 continues to squeeze the clay 9. At this time, the flexible layer 8 will continue to deform and fill the gap between the airbag and itself. Finally, the device body 4 and the air supply pipe 1 are used to inject air into the airbag, and the air pressure inside the airbag is detected in real time by the air pressure detector 3, thereby achieving the effect of testing the airbag.

[0025] By using the clay 9 and the flexible layer 8, the deformation capacity of the clay 9 can fill the gap between the airbag and the flexible layer 8, thereby improving the sealing effect between the airbag and the flexible layer 8, preventing air leakage inside the airbag, and thus improving the accuracy of air pressure detection and the detection effect.

[0026] Furthermore, the movable ring 7 and the fixed ring 6 are inclined on the side closest to the clay 9, which makes it easier to push the clay 9 towards the air bladder when the movable ring 7 and the fixed ring 6 squeeze the clay 9.

[0027] like Figures 1-3 As shown, the driving assembly includes an adjusting ring 10 rotatably connected to the moving ring 7. The inner wall of the adjusting ring 10 is threadedly connected to the fixed pipe 5. A limiting block 11 is fixedly connected to the moving ring 7. An annular groove 12 for the limiting block 11 to rotate is provided on the outer wall of the adjusting ring 10, which enables the adjusting ring 10 and the moving ring 7 to be connected to each other while the adjusting ring 10 rotates. A sealing gasket 13 is fixedly connected to the adjusting ring 10 and contacts the side wall of the fixed pipe 5, which can improve the sealing between the adjusting ring 10 and the side wall of the fixed pipe 5. When it is necessary to drive the moving ring 7 to move along the fixed pipe 5, the adjusting ring 10 is rotated, and the adjusting ring 10 moves along the side wall of the fixed pipe 5, while driving the moving ring 7 to move in the same direction, thereby achieving the effect of driving the moving ring 7 to move.

[0028] Furthermore, the movable ring 7 has a through hole 14, and a cover 15 is detachably connected to the through hole 14, which facilitates the addition of water to the clay 9 to keep the clay 9 moist and facilitates the deformation of the clay 9. An installation tube 16 is fixedly connected to the through hole 14, and the cover 15 and the installation tube 16 are threaded together, which further limits the connection between the cover 15 and the through hole 14, prevents the clay 9 from pushing the cover 15 out during the extrusion process, and improves the fixing effect between the cover 15 and the through hole 14.

[0029] The working process of this utility model is as follows: When performing air pressure testing on the airbag, the nozzle 2 is inserted into the opening of the airbag, and the flexible layer 8 is placed at the opening of the airbag. Then, the airbag is bound to the flexible layer 8 with tape. Then, the adjusting ring 10 is rotated, and the adjusting ring 10 moves along the side wall of the fixed tube 5, while driving the moving ring 7 to move in the same direction. The moving ring 7 squeezes the clay 9 located between itself and the fixed ring 6, moving the clay 9 towards the inner wall of the airbag. At the same time, the flexible layer 8 deforms in the same direction. When the flexible layer 8 and the inner wall of the airbag come into contact with each other, the moving ring 7 continues to squeeze the clay 9. At this time, the flexible layer 8 will continue to deform and fill the gap between the airbag and itself. Finally, the device body 4 and the air supply pipe 1 are used to inject air into the airbag, and the air pressure inside the airbag is detected in real time by the air pressure detector 3, thereby achieving the effect of testing the airbag.

[0030] By using the clay 9 and the flexible layer 8, the deformation capacity of the clay 9 can fill the gap between the airbag and the flexible layer 8, thereby improving the sealing effect between the airbag and the flexible layer 8, preventing air leakage inside the airbag, and thus improving the accuracy of air pressure detection and the detection effect.

[0031] Experiments have shown

[0032] To demonstrate the beneficial effects of this invention, the following comparative experiments were conducted:

[0033] Comparative Example 1 (using prior art): Using a detection device from the prior art, a nozzle was inserted into the opening of the anesthesia reservoir and secured with three turns of medical tape. The anesthesia reservoir was inflated to 10.0 kPa. A high-precision pressure sensor was used to monitor pressure changes over 60 seconds. The test showed that after 60 seconds, the pressure inside the anesthesia reservoir dropped to 9.5 kPa, representing a pressure loss rate of 5.0%.

[0034] Example 1 (using this invention): Using the device described in this invention, nozzle 2 was inserted into the same anesthesia reservoir opening, so that the flexible layer 8 abutted against the inner wall of the anesthesia reservoir opening. The adjusting ring 10 was rotated, causing the moving ring 7 to move downwards and compress the clay 9 until the flexible layer 8 was observed to be tightly adhered to the inner wall of the anesthesia reservoir. The anesthesia reservoir was then inflated to 10.0 kPa and monitored for 60 seconds. The test showed that after 60 seconds, the pressure inside the anesthesia reservoir was 9.98 kPa, with a pressure loss rate of only 0.2%.

[0035] Experimental conclusion: Data comparison shows that the airtightness of the technical solution of this utility model is far superior to that of the tape fixation method in the background technology, the pressure loss rate is reduced by 96%, and the accuracy of the test results is significantly improved, which fully proves that this utility model has substantial features and significant improvements.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An air bag air pressure detecting device comprising a device body (4) with a gas delivery pipe (1) and a nozzle (2) and an air pressure detector (3), characterized in that: The gas delivery pipe (1) is fixedly connected to a fixed pipe (5) near the nozzle (2). A fixed ring (6) and a moving ring (7) are fixedly connected to the outer wall of the fixed pipe (5). A flexible layer (8) is fixedly connected between the moving ring (7) and the fixed ring (6). Clay (9) is filled between the flexible layer (8) and the fixed pipe (5). The fixed pipe (5) is provided with a drive assembly for driving the moving ring (7) to move along its own side wall.

2. The airbag gas pressure detection apparatus according to claim 1, characterized by: The drive assembly includes an adjusting ring (10) rotatably connected to a moving ring (7), the inner wall of the adjusting ring (10) and the fixed pipe (5) are threadedly connected, a limiting block (11) is fixedly connected to the moving ring (7), and an annular groove (12) for the limiting block (11) to rotate is provided on the outer wall of the adjusting ring (10).

3. An air bag gas pressure detection device according to claim 2, characterized by: A sealing gasket (13) that contacts the side wall of the fixed tube (5) is fixedly connected to the adjusting ring (10).

4. The airbag gas pressure detection apparatus according to claim 1, characterized by: The movable ring (7) has a through hole (14), and a cover (15) is detachably connected to the through hole (14).

5. The airbag gas pressure detection apparatus according to claim 4, characterized by: An installation tube (16) is fixedly connected to the through hole (14), and the cover (15) and the installation tube (16) are threaded together.

6. The airbag pressure detection device according to claim 1, characterized in that: The moving ring (7) and the fixed ring (6) are inclined on the side closest to the clay (9).

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