A device for detecting leakage of a lung valve assembly

Abstract

The utility model belongs to special process equipment field, concretely relates to a lung formula valve assembly leakage detection device. The leakage detection device includes base (1), push rod (2), limiting bolt (3), air inlet connector (4), air outlet connector (5). The utility model has realized the detection requirement of lung formula valve assembly leakage.

Description

Technical Field

[0001] This utility model belongs to the field of special process equipment, and specifically relates to a leak detection device for a lung-type valve assembly. Background Technology

[0002] To meet the physiological needs of pilots in different high-altitude environments, our company has developed a lung-type breathing oxygen supply device; among which, the lung-type valve assembly is the core component for realizing oxygen supply from the oxygen source to the pilot's mask.

[0003] The lung valve assembly consists of a sleeve, a piston core, and a sealing ring. Both the piston core and sleeve are metal parts with micron-level dimensional accuracy, while the sealing ring is made of rubber. The lung valve assembly uses a labyrinth seal for dynamic sealing. The leakage rate reflects the clearance between the sleeve and piston core; a small clearance and low leakage can cause valve jamming, resulting in high air intake resistance for the pilot; a large clearance and high leakage can cause valve leakage losses, leading to reduced airflow for the pilot. Utility Model Content

[0004] Purpose of the utility model: In order to meet the requirements of micron-level leakage testing of lung valve components, a lung valve component leakage detection device is provided to ensure product quality and meet the physiological needs of pilots to obtain breathing oxygen supply in different high-altitude environments.

[0005] Technical solution: A leak detection device for a lung-type valve assembly, the lung-type valve assembly including a sleeve, a piston core assembled inside the sleeve, and two sealing rings assembled on a groove in the sleeve, the device comprising: The base 1 includes a rectangular block and a threaded column connected thereto. The base has a first through hole in the horizontal direction that passes through the base and the threaded column. The lung valve assembly is inserted into the first through hole. The upper end face of the base has a second through hole and a third through hole that connect to the first through hole. Limiting pin 3 is inserted into the third through hole and abuts against the left end face of the piston core of the lung valve assembly; Push rod 2 is a two-stage stepped rod. The thin rod section is inserted into the first through hole of the base to push the sleeve. The thin rod section of the push rod has a radial through groove to avoid the limiting pin. The air inlet 4 includes a small rectangular block and an air nozzle; the small rectangular block has a threaded hole, and the small rectangular block is screwed onto the threaded post of the base, with the other end of the threaded hole connected to the air nozzle; The air outlet nozzle 5 is inserted into the second through hole of the base until it is inserted into the air outlet on the sleeve of the lung valve assembly.

[0006] Furthermore, the sleeve has an air outlet nozzle 5.

[0007] Furthermore, a limiting pin is riveted to the base to prevent the piston core of the lung valve assembly from dislodging.

[0008] Furthermore, a sealing ring of the lung valve assembly is located between the inner wall of the first through hole and the sleeve, and between the second through hole and the third through hole.

[0009] Furthermore, a sealing ring of the lung valve assembly is located between the inner wall of the first through hole and the sleeve, and between the first through hole and the air inlet nozzle.

[0010] Furthermore, the second through hole is a threaded hole, and the air outlet nozzle is threadedly connected to the base.

[0011] A method for detecting leakage in a lung-type valve assembly, implemented using the aforementioned device, comprises the following steps: Before testing, place the sleeve containing the sealing ring into the base; The piston core is then placed into the sleeve; Next, connect the air inlet and air outlet to the air inlet and air outlet of the base in sequence using threads; During testing, adjust the oxygen pressure at the air inlet, and then pass the air into the lung valve assembly through the air inlet nozzle, and connect the air outlet nozzle to the flow meter. Press the flow test switch and read the flow count value as the leakage of the lung valve assembly.

[0012] Furthermore, after testing, a sleeve with a sealing ring is pushed out on the left side of the device using a push rod; Lung valve components with acceptable leakage levels should be labeled and vacuum-packed for storage.

[0013] Beneficial effects: This invention provides a lung valve assembly leakage detection device that can quickly, accurately, and stably detect the leakage of lung valve assemblies with dimensional accuracy down to the micrometer level. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a lung valve assembly leakage detection device provided by this utility model for detecting lung valve assemblies; Figure 2 This is a structural diagram of a lung-type valve assembly; Explanation of reference numerals in the attached figures: 1-Base, 2-Push rod, 3-Inlet nozzle, 4-Inlet nozzle, 5-Outlet nozzle, 6-Sleeve, 7-Piston core, 8-Sealing ring. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0016] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0017] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 A lung valve assembly leakage detection device is provided. The device includes a base 1, a push rod 2, a limiting pin 3, an air inlet 4, and an air outlet 5. The limiting pin 3 is riveted and fixed in a small hole in the base 1. The air inlet 4 and the air outlet 5 are both fixed on the base 1 and are respectively connected to the air inlet and air outlet of the lung valve assembly.

[0020] Furthermore, after the sleeve is inserted into the bottom end of the base 1, its other end is flush with the other end of the base 1.

[0021] Furthermore, it includes a limiting pin 3, which is riveted and fixed to a small hole in the base 1. When oxygen pressure is input into the air inlet to test the leakage, the piston core will be pushed to the limiting pin 3 to play a positioning role, simulating the positional relationship of the lung valve assembly in the product cavity.

[0022] Furthermore, it also includes an air inlet nozzle 4, whose position corresponds to the air inlet of the sleeve and the air inlet of the base 1. The air inlet of the base 1 and the air inlet nozzle 4 are fixed to the base 1 by screwing them together.

[0023] Furthermore, it also includes an air outlet nozzle 5, whose position corresponds to the air outlet of the sleeve and the air outlet of the base 1. The air outlet of the base 1 and the air outlet nozzle 5 are fixed to the base 1 by screwing. Furthermore, it also includes a push rod 2, which is used to push the sleeve with the sealing ring out of the base 1 after the leakage detection is completed.

[0024] like Figure 2 The lung valve assembly includes a sleeve 6, a piston core 7 fitted inside the sleeve, and a sealing ring 8 fitted on a groove in the sleeve.

[0025] A method for detecting leakage in a lung-type valve assembly, comprising the following steps: Before testing, place the sleeve with the sealing ring into base 1; The piston core is then placed into the sleeve; Next, the air inlet 4 and the air outlet 5 are connected to the air inlet and air outlet of the base 1 by means of threads.

[0026] During testing, adjust the oxygen pressure at the air inlet, and let it enter the lung valve assembly through the air inlet nozzle 4. Connect the air outlet nozzle 5 to the flow meter. Press the flow test switch to read the flow count value, which is the leakage of the lung valve assembly.

[0027] After testing, use push rod 2 to push out the sleeve with the sealing ring on the left side of the device.

[0028] Lung valve components with acceptable leakage levels should be labeled and vacuum-packed for storage.

[0029] The above description is merely a specific embodiment of this utility model, providing a detailed description of the utility model. Parts not covered in detail are conventional techniques. However, the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A leak detection device for a lung-type valve assembly, the lung-type valve assembly comprising a sleeve, a piston core assembled within the sleeve, and two sealing rings assembled on a groove in the sleeve, characterized in that, The device includes: The base (1) includes a rectangular block and a threaded column connected thereto. The base has a first through hole in the horizontal direction that passes through the base and the threaded column. The lung valve assembly is inserted into the first through hole. The upper end face of the base has a second through hole and a third through hole that connect to the first through hole. The push rod (2) is a two-stage stepped rod. The thin rod section is inserted into the first through hole of the base to push the sleeve. The thin rod section of the push rod has a radial through groove to avoid the limiting pin. The limiting pin (3) is inserted into the third through hole and abuts against the left end face of the piston core of the lung valve assembly; The air inlet nozzle (4) includes a small rectangular block and an air nozzle; a threaded hole is opened in the small rectangular block, the small rectangular block is screwed onto the threaded post of the base, and the other end of the threaded hole is connected to the air nozzle; The air outlet nozzle (5) is inserted into the second through hole of the base until it is inserted into the air outlet on the sleeve of the lung valve assembly.

2. The device of claim 1, wherein, The air outlet on the sleeve is the air outlet nozzle (5).

3. The device of claim 1, wherein, The limit pin is riveted to the base to prevent the piston core of the lung valve assembly from coming out.

4. The lung-type valve assembly leakage detection device according to claim 1, characterized in that, A sealing ring of the lung valve assembly is located between the inner wall of the first through hole and the sleeve, and between the second through hole and the third through hole.

5. The device of claim 1, wherein, A sealing ring of the lung valve assembly is located between the inner wall of the first through hole and the sleeve, and between the first through hole and the air inlet nozzle.

6. The device of claim 1, wherein, The second through hole is a threaded hole, and the air outlet nozzle is threadedly connected to the base.

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