Valve core structure and quick coupling

Abstract

The utility model belongs to pipeline connecting device technical field, concretely relates to a valve core structure and quick -witted joint, and valve core structure includes valve core and connecting column: the valve core includes valve core front section, valve core middle section and valve core rear section, be provided with first recess between valve core front section with valve core middle section, first recess is used for setting first sealing washer, the valve core middle section sets up the shroud, the shroud is located first recess top, be provided with second recess between valve core rear section with valve core middle section, second recess is used for setting second sealing washer, connecting column with valve core front section connects, in the utility model, the shroud is located first recess top, protects first sealing washer, reduces friction and abrasion, to enhance the life of first sealing washer, thereby improve the durability of overall valve core.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline connection devices, specifically relating to a valve core structure and a quick connector. Background Technology

[0002] Valve cores are quick-connect devices used in gas delivery systems, such as oxygen connectors, and are suitable for medical oxygen supply equipment, industrial cutting equipment, and other scenarios, enabling safe sealing and quick on / off functions.

[0003] However, the sealing rings in existing valve cores lack a protective structure. During use, the first sealing ring of the valve core is directly exposed in the fluid channel. Dust and other particulate impurities carried in the fluid channel directly rub against the outer surface of the sealing ring. In addition, under high-pressure gas environment, the rubber sealing ring is prone to material cracking due to long-term scouring by high-speed airflow and particulate impurities, leading to sealing failure. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a valve core structure and a quick connector to solve the problems of the first sealing ring of the valve core being directly exposed in the fluid channel during use, causing direct friction between dust and other particulate impurities carried in the fluid channel and the outer surface of the sealing ring, and the rubber sealing ring being prone to material cracking due to long-term scouring by high-speed airflow and particulate impurities under high-pressure gas environment, leading to sealing failure.

[0005] One embodiment of this utility model provides a valve core structure, including a valve core and a connecting post:

[0006] The valve core includes a front section, a middle section, and a rear section; a first groove is provided between the front section and the middle section, and the first groove is used to provide a first sealing ring;

[0007] A protective cover is provided in the middle section of the valve core. The protective cover is located above the first groove, and the first sealing ring is located between the inner side of the protective cover and the first groove.

[0008] A second groove is provided between the rear section of the valve core and the middle section of the valve core, and the second groove is used to provide a second sealing ring.

[0009] The connecting post is connected to the front section of the valve core.

[0010] In one embodiment of this utility model, a guide cone surface is provided at the end of the rear section of the valve core, and the guide cone surface is used to guide the connection between the valve core and the valve body.

[0011] In one embodiment of this utility model, the valve core structure is a centrally symmetrical rotating body.

[0012] In one embodiment of this utility model, the outer diameter of the middle section of the valve core is larger than the outer diameter of the front section of the valve core.

[0013] In one embodiment of this utility model, the outer diameter of the first sealing ring is smaller than the inner diameter of the protective cover, but larger than the outer diameter of the front section of the valve core.

[0014] In one embodiment of this invention, the height of the protective cover is at least one-third of the diameter of the first sealing ring cross-section.

[0015] In one embodiment of this utility model, the outer diameter of the rear section of the valve core is less than or equal to the outer diameter of the front section of the valve core.

[0016] In one embodiment of this utility model, an annular groove is provided at the end of the connecting column, and the annular groove is used to provide an open retaining ring.

[0017] In one embodiment of this utility model, the valve core and the connecting column are made of the same material, namely brass or stainless steel.

[0018] One embodiment of this utility model also provides a quick connector, including the valve core structure as described in any of the above embodiments.

[0019] The valve core structure and quick connector provided by this utility model can achieve the following technical effects:

[0020] 1. The protective cover is located above the first groove, which reduces the exposed area of ​​the first sealing ring, reduces friction and wear, and enhances the life of the first sealing ring, thereby improving the overall durability of the valve core; the design of the connecting column makes it easier and faster to connect the valve core to the pipeline or other equipment, reducing the difficulty of installation and maintenance.

[0021] 2. The guide cone surface helps guide the connection between the valve core and the valve body, improving assembly efficiency and ensuring proper alignment of the sealing ring, thus preventing leakage caused by improper installation. Furthermore, the centrally symmetrical rotating body design ensures even force distribution on the valve core during operation, reducing uneven wear and ensuring long-term sealing performance.

[0022] 3. The valve core structure and quick coupling have the advantages of simple structure, good sealing effect and long service life, and are suitable for connection and control in various fluid pipeline systems. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram showing the valve core structure of this utility model;

[0025] Figure 2 A cross-sectional structural schematic diagram showing the valve core structure of this utility model;

[0026] Figure 3 A schematic diagram showing the assembly structure of the valve core and sealing ring of this utility model;

[0027] Figure 4 This is a cross-sectional view of the valve core structure of this utility model when equipped with a sealing ring.

[0028] The symbols in the attached image are explained as follows:

[0029] 1-Valve core; 11-Front section of valve core; 12-Middle section of valve core; 13-Rear section of valve core; 14-First groove; 15-Second groove;

[0030] 2-Connecting post; 21-Annular groove;

[0031] 3-First sealing ring;

[0032] 4-Shield;

[0033] 5-Second sealing ring. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0035] Please refer to Figures 1-4 One embodiment of this utility model provides a valve core structure and a quick connector, including a valve core 1 and a connecting post 2:

[0036] The valve core 1 includes a front section 11, a middle section 12, and a rear section 13; a first groove 14 is provided between the front section 11 and the middle section 12, and the first groove 14 is used to provide a first sealing ring 3.

[0037] The valve core middle section 12 is provided with a protective cover 4, the protective cover 4 is located above the first groove 14, and the first sealing ring 3 is located between the inner side of the protective cover 4 and the first groove 14.

[0038] A second groove 15 is provided between the rear section 13 of the valve core and the middle section 12 of the valve core, and the second groove 15 is used to set the second sealing ring 5.

[0039] The connecting post 2 is connected to the front section 11 of the valve core.

[0040] Understandably, the first sealing ring 3 and the second sealing ring 5 are used to form a sealing fit with the pipe or other connecting parts; in addition, the design of the protective cover 4 can effectively protect the first sealing ring 3 and prevent it from being damaged during use, thereby extending the service life of the valve core structure.

[0041] Therefore, the valve core structure and quick connector provided by this utility model have the advantages of simple structure, good sealing effect and long service life, and are suitable for connectors in various fluid pipeline systems.

[0042] Please refer to Figures 1-2 In one embodiment of this utility model, the end of the rear section 13 of the valve core is provided with a guide cone surface, which is used to guide the valve core 1 to connect with the valve body.

[0043] Understandably, the design of the guide cone surface makes it easier and more accurate to position the valve core 1 when it is inserted into the valve body, thereby improving the efficiency of the connection. At the same time, the guide cone surface also serves as a preliminary seal, reducing fluid leakage and improving the system's sealing performance before the valve core 1 is fully locked to the valve body. In one embodiment of this invention, the valve core structure is a centrally symmetrical rotating body;

[0044] The outer diameter of the middle section 12 of the valve core is larger than the outer diameter of the front section 11 of the valve core.

[0045] The outer diameter of the first sealing ring 3 is smaller than the inner diameter of the protective cover 4, but larger than the outer diameter of the valve core front section 11;

[0046] The outer diameter of the rear section 13 of the valve core is less than or equal to the outer diameter of the front section 11 of the valve core.

[0047] Understandably, the design of this embodiment allows the first sealing ring 3 to be tightly fitted onto the front section 11 of the valve core, while the protective cover 4 effectively wraps around the first sealing ring 3 to prevent it from being squeezed or worn by external forces during use. In addition, the outer diameter of the middle section 12 of the valve core is larger than that of the front section 11 of the valve core, which allows the valve core 1 to produce a better sealing effect when rotating. Because the outer diameter of the middle section is larger, it can better match the sealing surface inside the valve body, reducing fluid leakage. At the same time, this design also makes the valve core 1 more stable when rotating and less prone to shaking, further improving the stability and reliability of the connection.

[0048] Please refer to Figure 2 In one embodiment of this utility model, the height of the protective cover 4 is at least one-third of the cross-sectional diameter of the first sealing ring 3.

[0049] Understandably, the design of this embodiment enables the protective cover 4 to provide sufficient support and protection for the first sealing ring 3, reducing the area of ​​the first sealing ring 3 exposed in the fluid channel during use and preventing direct friction between dust and other particulate impurities carried in the fluid channel and the outer surface of the sealing ring. Simultaneously, the height design of the protective cover 4 ensures that the gap between it and the front section 11 of the valve core is appropriate, preventing excessive gaps from affecting the sealing effect. This structural design improves the overall stability and durability of the valve core structure.

[0050] In one embodiment of the present invention, an annular groove 21 is provided at the end of the connecting post 2, and the annular groove 21 is used to provide an open retaining ring.

[0051] Understandably, the open retaining ring can be embedded in the annular groove 21, making the connection between the connecting post 2 and the open retaining ring more secure and reliable; at the same time, the installation and removal of the open retaining ring are relatively simple, facilitating subsequent maintenance and replacement. It is practical and convenient.

[0052] In one embodiment of this utility model, the valve core 1 and the connecting column 2 are made of the same material, namely brass or stainless steel.

[0053] Understandably, brass and stainless steel have good corrosion resistance and mechanical strength, and can maintain stable performance in various fluid environments.

[0054] Brass, with its excellent machinability and wear resistance, is suitable for manufacturing valve cores 1 and connecting posts 2, which require high precision and complex structures. Stainless steel, on the other hand, is renowned for its outstanding corrosion resistance, high-temperature strength, and oxidation resistance, making it particularly suitable for high-pressure, high-temperature, or highly corrosive fluid environments. By selecting these two materials, the reliability and durability of the valve core structure are ensured in various application scenarios, meeting the needs of multiple industrial sectors.

[0055] In one embodiment of the present invention, a quick connector is also provided, including the valve core structure as described in any of the above embodiments.

[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A valve core structure, characterized in that, Includes valve core (1) and connecting post (2): The valve core (1) includes a front section (11), a middle section (12), and a rear section (13); a first groove (14) is provided between the front section (11) and the middle section (12), and the first groove (14) is used to provide a first sealing ring (3); The valve core middle section (12) is provided with a protective cover (4), the protective cover (4) is located above the first groove (14), and the first sealing ring (3) is located between the inner side of the protective cover (4) and the first groove (14); A second groove (15) is provided between the rear section (13) of the valve core and the middle section (12) of the valve core, and the second groove (15) is used to provide a second sealing ring (5); The connecting column (2) is connected to the front section (11) of the valve core.

2. The valve core structure as described in claim 1, characterized in that, The rear section (13) of the valve core is provided with a guide cone surface at its end, which is used to guide the valve core (1) to connect with the valve body.

3. The valve core structure as described in claim 1, characterized in that, The valve core structure is a centrally symmetrical rotating body.

4. The valve core structure as described in claim 3, characterized in that, The outer diameter of the middle section (12) of the valve core is larger than the outer diameter of the front section (11) of the valve core.

5. The valve core structure as described in claim 4, characterized in that, The outer diameter of the first sealing ring (3) is smaller than the inner diameter of the protective cover (4) and larger than the outer diameter of the valve core front section (11).

6. The valve core structure as described in claim 4, characterized in that, The height of the protective cover (4) is at least one-third of the diameter of the cross-section of the first sealing ring (3).

7. The valve core structure as described in claim 3, characterized in that, The outer diameter of the rear section (13) of the valve core is less than or equal to the outer diameter of the front section (11) of the valve core.

8. The valve core structure as described in claim 1, characterized in that, The end of the connecting column (2) is provided with an annular groove (21), which is used to set an open retaining ring.

9. The valve core structure as described in any one of claims 1-8, characterized in that, The valve core (1) and the connecting column (2) are made of the same material, namely brass or stainless steel.

10. A quick connector, characterized in that, Includes the valve core structure as described in any one of claims 1-9.

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