A sealing structure and a pipe fitting connecting device having the same

Abstract

14. The closure of the claimed invention relates to a valve having a valve opening, wherein the valve opening is located adjacent to the closure member and the base member, and wherein the closure member ...

Description

Technical field

[0001] The present invention relates to the technical field of pipeline connection, and in particular to a sealing structure and a pipeline component connecting device having the sealing structure. [Background Technology]

[0002] Seals are commonly used in various valves or equipment to prevent leakage of media. A typical sealing structure may include a valve core and a valve body. The valve body is provided with a valve mouth portion, and the valve core can approach or move away from the valve mouth portion. A seal is provided on the valve core. When the valve mouth portion is in a closed state, the seal is against the valve core and the valve mouth portion. For those skilled in the art, it is necessary to ensure good sealing performance between the valve core and the valve mouth portion to reduce the risk of media leakage. [Summary of the invention]

[0003] An object of the present invention is to provide a sealing structure and a pipeline component connection device having the sealing structure, which can relatively ensure the sealing performance between the valve core and the valve port and relatively reduce the risk of medium leakage.

[0004] To achieve the above-mentioned object, the present invention provides a sealing structure, comprising a valve body and a valve core, wherein the valve body is provided with a valve opening and an abutting portion, and the valve core can approach or move away from the valve opening, and the valve core includes a base, and the sealing structure further comprises a retaining member, a sealing member, and a gasket, wherein the retaining member is fixedly connected or limitatively connected to the valve core, the retaining member and the sealing member are located on different sides of the gasket, the gasket can be relatively displaced relative to the valve core along the axial direction of the valve core, and the sealing member is located between the base and the gasket;

[0005] When the valve core closes the valve opening, the gasket directly or indirectly abuts against the abutting portion, the sealing member is in a compressed state, the sealing member directly or indirectly abuts between the base and the gasket, and the sealing member abuts against the valve opening.

[0006] In addition, the present application also provides a pipeline fitting connection device, including a first joint assembly and a second joint assembly, the first joint assembly and the second joint assembly are detachably connected, the first joint assembly includes a first limit seat, a first elastic member and a first valve core assembly, the second joint assembly includes a second limit seat, a second elastic member and a second valve core assembly, the first joint assembly is provided with a first valve mouth portion, the second joint assembly includes a second valve mouth portion, the first valve core assembly can approach or move away from the first valve mouth portion, the second valve core assembly can approach or move away from the second valve mouth portion, the first elastic member is abutted between the first limit seat and the first valve core assembly, the second elastic member is abutted between the second limit seat and the second valve core assembly, the first joint assembly includes a first sealing structure, the second joint assembly includes a second sealing structure, the first sealing structure is the sealing structure stated in any one of claims 1-6, and the second sealing structure is the sealing structure stated in any one of claims 1-6.

[0007] The present application provides a sealing structure and a pipeline fitting connection device having the sealing structure. Through the optimized design of the sealing structure, when the valve core closes the valve mouth, the abutting portion directly or indirectly abuts against the gasket, the seal is in a compressed state, the seal directly or indirectly abuts between the base and the gasket, and the seal abuts against the valve mouth, which can relatively ensure the sealing performance between the valve core and the valve mouth and relatively reduce the risk of medium leakage.

Brief Description of the Drawings

[0008] Figure 1 This is a schematic cross-sectional view of the valve port portion of the sealing structure provided by the present application in a closed state;

[0009] Figure 2 This is a schematic cross-sectional view of the valve port portion of the sealing structure provided by the present application in an open state;

[0010] Figure 3 for Figure 1 The circle marks an enlarged schematic diagram of the structure of the part;

[0011] Figure 4 for Figure 1 A cross-sectional schematic diagram of a sealing structure applied to a pipe fitting connection device; [Specific implementation method]

[0012] In order to enable those skilled in the art to better understand the technical solution provided by the present application, the technical solution of the present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] Reference Figure 1-3As shown, the present application provides a sealing structure, including a valve body 10 and a valve core 20. The valve body 10 is provided with a channel, and the valve core 20 is located in the channel. The valve body 10 also includes a valve mouth portion 11 and a flange portion 12. The flange portion 12 protrudes inward from the valve mouth portion 11, and the flange portion 12 includes a wall surface 121, and the wall surface 121 forms an abutment portion. It also includes a first conical portion 13. The first conical portion 13 is roughly an inclined surface structure. The valve mouth portion 11 is roughly located between the flange portion 12 and the first conical portion 13. The first conical portion 13 is adjacent to the valve mouth portion 11. The valve core 20 can approach or move away from the valve mouth portion 11 along the axial direction of the sealing structure. In this embodiment, the valve core 20 is provided with an accommodating cavity 25, and the elastic member 60 is located in the accommodating cavity 25. The sealing structure also includes a first limiting member 400. The elastic member 60 abuts against the first limiting member 400 between the valve core 20, and the valve core closes the valve mouth portion 11 under the recovery action of the elastic member 60.

[0014] The specific structure of the valve core 20 is introduced below. The valve core 20 includes a push rod portion 21, a main body portion 22 and a base portion 23. The push rod portion 21 protrudes outward from the main body portion 22, and the main body portion 22 is located between the push rod portion 21 and the base portion 23. The outer diameter of the push rod portion is smaller than the outer diameter of the main body portion, and the outer diameter of the main body portion can be smaller than the outer diameter of the base portion. The valve core 20 also includes a second conical portion portion 24, which can be abutted against the first conical portion portion 13, and also includes wings 26. The base 23 and the wings 26 transition through the first conical portion portion 13. Several wings 26 and the bottom wall of the base 23 roughly define an accommodating cavity 25. The wings 26 can slide with part of the inner circumferential wall of the valve body 10 to approach or move away from the valve mouth portion. The main body portion 22 of the valve core 20 is provided with a recess 220, which is recessed inward from the outer surface of the main body portion.

[0015] The sealing structure also includes a sealing member 30, a gasket 40 and a retaining member 50. In this embodiment, the retaining member 50 can be a roughly C-shaped retaining spring. The retaining member 50 is fixedly connected or limitedly connected to the main body. Part of the retaining member 50 is located in the recess 220 and is installed in the recess through expansion deformation and limited in the recess. It should be noted that the retaining member can also be directly fixedly connected to the valve core by, for example, welding. The gasket 40 and the sealing member 30 are both located on the outer periphery of the main body of the valve core. The retaining member 50 and the sealing member 30 are located on different sides of the gasket 40. The gasket 40 can be moved along the axial direction of the valve core 20. When the valve core 20 is displaced relative to the gasket 40, the gasket 40 can approach or move away from the retaining member 50. The retaining member 50 limits the stroke of the gasket 40. The sealing structure is further provided with a receiving groove A1. The gasket 40 and the base 23 roughly define the receiving groove A1. The width of the receiving groove A1 can be changed. The sealing member 30 is located between the gasket and the base. At least part of the sealing member 30 is located in the receiving groove A1. When the valve mouth 11 is in a closed state, that is, when the valve core 20 closes the valve mouth 11, the sealing member 30 is installed from the valve mouth channel of the valve mouth 11, the abutting portion 121 abuts against the gasket 40, and the gasket 40 and the retaining member 50 The present invention relates to a valve core that is provided with a plurality of sealing members, and a plurality of sealing members are provided with a plurality of sealing members, and a plurality of sealing members are provided with a plurality of sealing members. The sealing members are provided with a plurality of sealing members, and a plurality of sealing members are provided with a plurality of sealing members. The sealing members are provided with a plurality of sealing members, and a plurality of sealing members are provided with a plurality of sealing members. The sealing members are provided with a plurality of sealing members, and a plurality of sealing members are provided with a plurality of sealing members. The sealing members are provided with a plurality of sealing members, and a plurality of sealing members are provided with a plurality of sealing members. The installation of the seal is relatively convenient. The seal does not directly contact the sealing parts of the valve body, which can relatively reduce the wear of the seal and relatively ensure the sealing performance between the valve core and the valve mouth. In addition, in order to achieve better control of the compression amount of the seal 30, when the first conical surface 13 and the second conical surface 24 are abutted, the valve core can be prevented from further actuation. The seal 30 is gradually compressed from the time it is installed into the valve mouth channel until the ultimate compression state, which can effectively prevent the seal from being tilted or squeezed. When the valve mouth is in the open state, the valve core 20 is relatively far away from the valve mouth. At this time, if Figure 2 As shown, the seal 30 can be in a free state or the compression amount of the seal 30 is smaller than the compression amount of the seal when the valve mouth is in a closed state, the gasket 40 and the locking member 50 are offset, and the width of the accommodating groove A1 when the valve mouth is in a closed state is set to H1, and the width of the accommodating groove A1 when the valve mouth is in an open state is set to H2, then H1>H2 is satisfied.

[0016] The sealing structure provided in this application can be specifically applied to the pipe fitting joint assembly structure, referring to Figure 4As shown, it includes a first joint component 100 and a second joint component 200. The first joint component 100 and the second joint component 200 are detachably connected. For example, a nut 202 can be threadedly matched with the external threaded portion of the first joint component 100 to connect the first joint component and the second joint component to each other, or the first joint component and the second joint component can be directly connected by plug-in. In order to achieve a better sealing effect between the two, the sealing member 300 is against the second joint body portion 201 of the first joint component 100 and the second joint component 200. The first joint component 100 includes a first limit seat 400, a first elastic member 60a and a first The valve core assembly 20a, the first elastic member 60a is against the first limit seat 400 and the first valve core assembly 20a, the second joint assembly 200 includes a second limit seat 500, a second elastic member 60a' and a second valve core assembly 20a', the second elastic member 60a' is against the second limit seat 500 and the second valve core assembly 20a', the first valve core assembly 20a can approach or move away from the first valve port 11a, the second valve core assembly 20a' can approach or move away from the second valve port 2011, when the pipeline joint assembly is in the conducting state, that is, when the first valve port is connected to the second valve port, the first valve core assembly 20a is in the conducting state. The core 201a and the second valve core 201a' of the second valve core assembly 20a' are against each other and push each other apart. At this time, the first elastic member and the second elastic member are both in a further compressed state. The first joint assembly 100 includes a first sealing structure, which includes a first sealing member 30a, a first gasket 40a and a first stopper 50a. The first stopper 50a is fixedly connected or limit-connected to the first valve core 201a. At this time, the first sealing member 30a is away from the first valve port portion 11a. The second joint assembly 200 includes a second sealing structure, which includes a second sealing member 30b, a second gasket 40b and a second stopper 50b At this time, the second sealing member 30b is away from the second valve opening portion 2011. When the first joint assembly 100 and the second joint assembly 200 are separated from each other, the first valve core assembly closes the first valve opening portion and the second valve core assembly closes the second valve opening portion due to the elastic recovery action of the first elastic member and the second elastic member. The first sealing member 30a abuts against the first valve opening portion 11a, and the second sealing member 30b abuts against the second valve opening portion 2011. The first sealing structure and the second sealing structure are both designed with reference to the sealing structure provided in this application. The specific structure, matching relationship and related technical effects of each component of the sealing structure have been described in detail and will not be repeated here.

[0017] It should be noted that the offset described in this application includes both direct offset and indirect offset. For example, when the valve mouth portion 11 is in a closed state, the abutting portion, i.e., the wall surface 121 of the flange portion, directly offsets the gasket 40. An additional component may be added to achieve offset with the gasket 40. The seal may be directly pressed against the gasket and the base, or an additional component may be added between the gasket and the base to achieve indirect offset between the gasket and the base.

[0018] Through the above-mentioned arrangement, a sealing structure is provided in the pipe fitting joint assembly, which can relatively guarantee the sealing performance between the valve core and the valve body and relatively reduce the leakage of the medium. Through the optimized design of the sealing structure and the addition of a gasket component, the seal is compressed and controlled with the help of the gasket and the base after the seal is installed into the valve mouth. The installation of the seal is relatively convenient, and the seal is not in direct contact with some sealing parts of the valve body, which can relatively reduce the wear of the seal.

[0019] It should be noted that the present application only cites an embodiment of the application of the sealing structure in a pipe fitting joint assembly. The sealing structure provided in the present application can also be used in other valve structures such as electronic expansion valves.

[0020] It should be noted that the directional nouns such as "upper" and "lower" or ordinal numbers such as "first" and "second" mentioned in this specification are all based on the drawings in the specification and are introduced for the convenience of description; they do not mean any limitation on the order of any components. In addition, since the functions of certain parts of the various components provided in the above embodiments are the same, this specification adopts a unified naming method for these parts. The above describes the electronic expansion valve provided by the relevant technical solution in detail, and the specific embodiments are used in this article for illustration. The description of the above embodiments is only used to help understand the method and core concept of the present invention, and does not impose any form of limitation on the present invention.

Claims

1. A sealing structure, characterized in that: The valve body comprises a valve core, the valve body comprising a valve opening and an abutting portion, the valve core being able to approach or move away from the valve opening, the valve core comprising a base, the sealing structure further comprising a retaining member, a sealing member, and a gasket, the retaining member being fixedly connected or position-limitingly connected to the valve core, the retaining member and the sealing member being located on different sides of the gasket, the gasket being able to move relative to the valve core in the axial direction of the valve core, and the sealing member being located between the base and the gasket; When the valve core closes the valve opening, the gasket directly or indirectly abuts against the abutting portion, the sealing member is in a compressed state, the sealing member directly or indirectly abuts between the base and the gasket, and the sealing member abuts against the valve opening.

2. A sealing structure according to claim 1, characterized in that: The valve body includes a flange portion. The flange portion is farther from the base portion than the valve mouth portion. The flange portion protrudes from the valve mouth portion. A wall surface of the flange portion forms the abutting portion.

3. A sealing structure according to claim 1, characterized in that: The valve core further includes a body portion and a push rod portion, the body portion is located between the push rod portion and the base portion, the sealing member is located at the outer periphery of the body portion, and the gasket is located at the outer periphery of the body portion.

4. A sealing structure according to claim 3, characterized in that: The valve core is further provided with a recessed portion, which is recessed inward from the outer surface of the main body portion, and part of the locking member is located in the recessed portion.

5. A sealing structure according to claim 4, characterized in that: The locking member is a clip spring, which is roughly C-shaped in structure. The clip spring is limited in the recess by expansion and deformation.

6. A sealing structure according to claim 3, characterized in that: The gasket is loosely fitted with the main body.

7. A sealing structure according to any one of claims 1 to 6, characterized in that: The valve body includes a first conical surface portion, which is arranged adjacent to the valve mouth portion. The valve core includes a second conical surface portion, which is arranged adjacent to the base portion. The first conical surface portion can offset the second conical surface portion to control the compression amount of the seal.

8. A sealing structure according to any one of claims 1 to 6, characterized in that: The sealing structure is provided with a receiving groove, and the gasket and the base roughly define the receiving groove. At least part of the sealing member is located in the receiving groove. When the valve core closes the valve body, the width of the receiving groove is set to H1; when the valve core is away from the valve mouth, the width of the receiving groove is set to H2, then H2>H1 is satisfied.

9. The sealing structure according to any one of claims 1 to 6, characterized in that: The gasket can approach or move away from the stopper. When the valve core closes the valve body, a gap is formed between the gasket and the stopper. When the valve core moves away from the valve port, the gasket abuts against the stopper.

10. The sealing structure according to any one of claims 1 to 6, characterized in that: When the valve core is away from the valve port, the sealing member is in a free state or the compression amount of the sealing member is smaller than the compression amount of the sealing member when the valve core closes the valve port.

11. A pipeline fitting connection device, comprising a first joint assembly and a second joint assembly, the first joint assembly and the second joint assembly being detachably connected, the first joint assembly comprising a first limit seat, a first elastic member and a first valve core assembly, the second joint assembly comprising a second limit seat, a second elastic member and a second valve core assembly, the first joint assembly being provided with a first valve port portion, the second joint assembly comprising a second valve port portion, the first valve core assembly being able to approach or move away from the first valve port portion, the second valve core assembly being able to approach or move away from the second valve port portion, the first elastic member being abutted between the first limit seat and the first valve core assembly, the second elastic member being abutted between the second limit seat and the second valve core assembly, the first joint assembly comprising a first sealing structure, the second joint assembly comprising a second sealing structure, the first sealing structure being the sealing structure stated in any one of claims 1 to 6, and the second sealing structure being the sealing structure stated in any one of claims 1 to 6.

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