Damping air leakage valve

Abstract

The utility model relates to the technical field of medical instruments, in particular to a damping air leakage valve. A damping air leakage valve comprises an upper cover, a lower cover and a main pipeline, an exhaust pipeline and an air supply pipeline are arranged in the main pipeline, and a one-way valve is arranged at the tail end of the air supply pipeline. The exhaust pipeline and the gas supply pipeline are separated through a first baffle and a third baffle; a second baffle is arranged at the tail end of the air supply pipeline, and the one-way valve is arranged on the second baffle. According to the oxygen mask, the exhaust pipeline and the air supply pipeline are arranged in the main pipeline, so that air exhaled by people can be better exhausted, and the situation that the air exhausted by people is blown into the oxygen mask by fresh air without being exhausted in time is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a damping air leakage valve. Background Art

[0002] A damping air leakage valve is a key component used in a respiratory mask and pipeline fitting system, mainly composed of components such as an upper cover, a lower cover, a silica gel membrane, a rubber plug, a three-way pipe, and a joint. This product is made of medical PC and silica gel materials, aiming to provide an interface connection device for continuous positive airway pressure ventilation or bilevel ventilator treatment for patients.

[0003] After the existing damping air leakage valve is connected to a respiratory mask, it can achieve the exchange of human gases. However, during gas exchange, when supplying oxygen to a person through the damping air leakage valve pipeline, a part of the carbon dioxide exhaled by the person has not had time to be discharged through the damping air leakage valve in the pipeline and is transported to the respiratory mask by the new oxygen, resulting in a relatively high carbon dioxide content in the fresh oxygen or air supplied to the person. And after the existing damping air leakage valve is disassembled and cleaned, when installing, it is necessary to carefully check the positions of the exhaust ports of the diaphragm and the upper cover to achieve the relative setting of the two exhaust ports, and the installation is inconvenient. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a damping air leakage valve.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A damping air leakage valve, including an upper cover, a lower cover, and a main pipeline. An exhaust pipeline and a supply pipeline are arranged in the main pipeline, and a one-way valve is arranged at the end of the supply pipeline;

[0007] A diaphragm is arranged between the lower cover and the upper cover. A first limiting block is arranged at the inner edge of the lower side of the upper cover. First limiting grooves and second limiting grooves matching the first limiting block are respectively arranged at the edges of the diaphragm and the lower cover; A second limiting block is arranged at the edge of the diaphragm, and a clamping groove matching the second limiting block is arranged on the lower cover.

[0008] The exhaust pipeline and the supply pipeline are separated by a first baffle and a third baffle; A second baffle is arranged at the end of the supply pipeline, and the one-way valve is arranged on the second baffle.

[0009] An exhaust joint for connecting the lower cover is arranged above the left side of the exhaust pipeline; A pore channel exhaust plate is arranged at the bottom of the lower cover.

[0010] A second exhaust port is arranged on the left side of the diaphragm, and a first exhaust port is arranged on the right side of the upper cover. The first exhaust port and the second exhaust port are arranged in a staggered manner.

[0011] A circular boss is provided at the top of the four peripheral edges of the diaphragm, and a circular groove for engaging the circular boss is provided at the inner four peripheral edges of the lower side of the upper cover.

[0012] A circular connecting groove is provided on the right outlet pipe of the main pipeline.

[0013] A clamping block for clamping with the top of the lower cover is provided at the lower side edge of the upper cover.

[0014] A bypass interface is provided on one side of the air supply pipeline, and a cap is provided on the bypass interface.

[0015] A connector is provided on the left side of the main pipeline, and a rib is provided on the top of the upper cover.

[0016] A handle is provided on the side of the upper cover.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. By providing an exhaust gas pipeline and an air supply pipeline in the main pipeline, the present utility model can achieve better discharge of the exhaled gas of a person, avoiding the situation where the gas discharged by the person is not discharged in time and is then blown into the oxygen mask by fresh air.

[0019] 2. Through the matching setting of the first limiting block, the first limiting groove, the second limiting groove, and the second limiting block, the rapid installation of the upper cover, the lower cover, and the diaphragm can be achieved, and the dislocation setting of the second exhaust port and the first exhaust port can be realized. The dislocation setting of the second exhaust port and the first exhaust port can reduce the overflow of fresh air. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 is the structural schematic diagram of the damping air leakage valve of the present utility model Figure 1 ;

[0022] Figure 2 is the exploded view of the damping air leakage valve of the present utility model;

[0023] Figure 3 is the structural schematic diagram of the damping air leakage valve of the present utility model Figure 2 ;

[0024] Figure 4 is the right view of the damping air leakage valve of the present utility model;

[0025] Figure 5 is the sectional view of the A-A part in the present utility model Figure 4 ;

[0026] Figure 6 is the structural schematic diagram of the upper cover of the present utility model

[0027] Figure 7 It is the upward view of the upper cover of the utility model.

[0028] In the figure: 1. Upper cover; 11. First exhaust port; 12. Rib; 13. First limit block; 14. Clamping block; 15. Annular groove; 16. Handle; 2. Diaphragm; 21. Second exhaust port; 22. First limit groove; 23. Second limit block; 24. Annular boss; 3. Lower cover; 31. Exhaust plate; 32. Second limit groove; 4. Connector; 5. Main pipeline; 50. First baffle; 51. Second baffle; 52. Check valve; 53. Connection groove; 54. Air supply pipeline; 55. Exhaust pipeline; 56. Exhaust connector; 57. Third baffle; 60. Bypass interface; 61. Cap. Specific embodiments

[0029] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0030] Embodiment 1: Please refer to Figures 1-7 , a damping air leakage valve, including an upper cover 1, a lower cover 3 and a main pipeline 5. An exhaust pipeline 55 and an air supply pipeline 54 are arranged in the main pipeline 5, and a check valve 52 is arranged at the end of the air supply pipeline 54. The exhaust pipeline 55 and the air supply pipeline 54 are separated by a first baffle 50 and a third baffle 57 (the first baffle 50 and the third baffle 57 are fixedly connected, and the first baffle 50 and the third baffle 57 are fixedly arranged in the main pipeline 5), and the exhaust pipeline 55 and the air supply pipeline 54 are not connected to each other; a second baffle 51 is arranged at the end of the air supply pipeline 54, and the check valve 52 is arranged on the second baffle 51. The arrangement of the check valve 52 prevents carbon dioxide from being discharged into the air supply pipeline 54 when discharging.

[0031] An exhaust connector 56 for connecting the lower cover 3 is arranged above the left side of the exhaust pipeline 55, and the lower cover 3 and the exhaust connector 56 are threadedly connected or clamped; an exhaust plate 31 with a hole is arranged at the bottom of the lower cover 3. A diaphragm 2 is arranged between the lower cover 3 and the upper cover 1. The diaphragm 2 is made of silica gel material and has elasticity. A second exhaust port 21 is arranged on the left side of the diaphragm 2, and a first exhaust port 11 is arranged on the right side of the upper cover 1. The first exhaust port 11 and the second exhaust port 21 are arranged in a staggered manner. A connector 4 is arranged on the left side of the main pipeline 5, and an annular connection groove 53 is arranged on the right outlet pipeline of the main pipeline 5.

[0032] The damping air leakage valve of the present application is applicable to the situation of supplying oxygen to people through an oxygen mask and exhausting air, and this situation is intermittent oxygen supply (for example, supplying oxygen for 2 s and exhausting air for 1.5 s). During use, the connector 4 is connected to the oxygen supply pipeline, and the hose of the oxygen mask is inserted into the connection groove 53. When starting to supply oxygen, oxygen flows into the air supply pipeline 54 through the pipeline of the connector 4 and then flows into the oxygen mask through the one-way valve 52; during the oxygen supply process, the oxygen-containing air will also reach the second exhaust port 21 through the exhaust pipeline 55, the exhaust plate 31, and the inner channel of the lower cover 3. Since the provided oxygen-containing air is slightly negative pressure and the diaphragm 2 is made of elastic silica gel material, the diaphragm 2 will bulge upward and fit with the upper cover 1 under the pressure of the slightly negative pressure. At this time, the damping air leakage valve will not leak air. The exhaled gas of people is discharged through the exhaust pipeline 55, the exhaust plate 31, the inner channel of the lower cover 3, the second exhaust port 21, and the first exhaust port 11; since the pressure of the carbon dioxide gas exhaled by people is relatively small, its pressure is not sufficient to bulge the diaphragm 2 to fit with the upper cover 1.

[0033] A circular boss 24 is provided at the top of the four peripheral edges of the diaphragm 2, and a circular groove 15 into which the circular boss 24 is inserted is provided at the inner four peripheral edges of the lower side of the upper cover 1. The matching setting of the circular boss 24 and the circular groove 15 can prevent the diaphragm 2 from moving or falling off during the up and down agitation process.

[0034] A first limit block 13 is provided at the inner edge of the lower side of the upper cover 1, and a first limit groove 22 and a second limit groove 32 that match the first limit block 13 are respectively provided at the edges of the diaphragm 2 and the lower cover 3; a second limit block 23 is provided at the edge of the diaphragm 2, and a card slot that matches the second limit block 23 is provided on the lower cover 3. The setting of the second limit block 23 and the card slot that matches the second limit block 23 facilitates the fixed installation of the diaphragm 2, and the setting of the first limit block 13, the first limit groove 22, and the second limit groove 32 facilitates the fixed installation of the upper cover 1. The setting of the above structures can ensure the misalignment setting of the second exhaust port 21 and the first exhaust port 11 after installation. Only by correspondingly installing each component can the rapid misalignment setting be achieved.

[0035] Embodiment 2: Please refer to Figures 1-7 , on the basis of Embodiment 1, a bypass interface 60 is provided on one side of the air supply pipeline 54, a cap 61 is provided on the bypass interface 60, and the bypass interface 60 can be connected to a negative oxygen device or an atomization device as required.

[0036] A rib 12 is provided at the top of the upper cover 1 to prevent other items from covering the upper cover 1 during use and blocking the first exhaust port 11, affecting the exhaust.

[0037] A clamping block 14 that is clamped with the top of the lower cover 3 is provided at the lower side edge of the upper cover 1; a handle 16 is provided on the side of the upper cover 1, and the setting of the handle 16 facilitates the disassembly of the upper cover 1.

[0038] The damping air leakage valve of the present application is applicable to the case where the pipeline between the air leakage valve and the oxygen mask is relatively short; when the pipeline between the air leakage valve and the oxygen mask is relatively long, it is recommended to select a hose with two internal passages (similar to the exhaust pipeline 55 and the air supply pipeline 54 on the right side of the main pipeline 5 of the present application) to connect the connection groove 53 and the oxygen mask, with one passage for air supply and one passage for exhaust, so as to achieve better gas exchange.

[0039] Enlightened by the above ideal embodiments based on the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A damping air leakage valve, comprising an upper cover (1), a lower cover (3) and a main pipeline (5), characterized in that, An exhaust gas pipeline (55) and an air supply pipeline (54) are arranged in the main pipeline (5), and a check valve (52) is arranged at the end of the air supply pipeline (54); A diaphragm (2) is arranged between the lower cover (3) and the upper cover (1). A first limit block (13) is arranged at the inner edge of the lower side of the upper cover (1). First limit grooves (22) and second limit grooves (32) which are matched with the first limit block (13) are respectively arranged at the edges of the diaphragm (2) and the lower cover (3); A second limit block (23) is arranged at the edge of the diaphragm (2), and a clamping groove which is matched with the second limit block (23) is arranged on the lower cover (3).

2. The damping air leakage valve according to claim 1, wherein The exhaust gas pipeline (55) and the air supply pipeline (54) are separated by a first baffle (50) and a third baffle (57); A second baffle (51) is arranged at the end of the air supply pipeline (54), and the check valve (52) is arranged on the second baffle (51).

3. The damping air leakage valve according to claim 2, characterized in that, An exhaust joint (56) for connecting the lower cover (3) is arranged above the left side of the exhaust gas pipeline (55); A pore channel exhaust plate (31) is arranged at the bottom of the lower cover (3).

4. The damping air leakage valve according to claim 1, characterized in that, A second exhaust port (21) is arranged on the left side of the diaphragm (2), a first exhaust port (11) is arranged on the right side of the upper cover (1), and the first exhaust port (11) and the second exhaust port (21) are arranged in a staggered manner.

5. The damping air leakage valve according to claim 4, wherein, An annular boss (24) is arranged at the top of the four peripheral edges of the diaphragm (2), and an annular groove (15) into which the annular boss (24) is inserted is arranged at the inner four peripheral edges of the lower side of the upper cover (1).

6. The damping air leakage valve according to claim 1, characterized in that, An annular connecting groove (53) is arranged on the right outlet pipeline of the main pipeline (5).

7. The damping air leakage valve according to claim 1, wherein, A clamping block (14) which is clamped with the top of the lower cover (3) is arranged at the lower side edge of the upper cover (1).

8. The damping air leakage valve according to claim 1, characterized in that, A bypass interface (60) is arranged on one side of the air supply pipeline (54), and a cap (61) is arranged on the bypass interface (60).

9. The damping air leakage valve according to claim 1, wherein A connector (4) is arranged on the left side of the main pipeline (5), and a rib (12) is arranged on the top of the upper cover (1).

10. The damping air leakage valve according to claim 1, characterized in that, A handle (16) is arranged on the side surface of the upper cover (1).

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