Quick connector for air tightness detection

Abstract

The utility model discloses a quick connector for air tightness detection. The quick connector comprises a quick connector body, a first sealing assembly and a second sealing assembly, the quick connector body comprises a valve seat arranged at the inner end of the quick connector body, a valve rod movably installed in the valve seat, a binding seat fixedly installed on one side of the inner end of the quick connector body, and a sealing spring movably installed between the valve rod and the binding seat. According to the quick connector for air tightness detection, the sealing element compressed by the first spring at the outer ends of the valve seat and the valve rod can be pressed and attached between the valve seat and the valve rod, and the inner sealing ring and the outer sealing ring at the inner end and the outer end of the sealing element are compressed in the inner sealing opening and the outer sealing opening formed in the valve rod and the valve seat; and the sealing ring compressed by the second spring in the mounting cavity at the inner end of the valve seat and the inner end of the valve rod can be tightly attached to the inner wall of the inner end of the valve seat, so that the sealing performance of the valve seat and the inner end of the valve rod is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to quick coupling technical field, concretely is a quick coupling for air tightness detection. BACKGROUND

[0002] The quick coupling for air tightness detection mainly refers to the quick coupling, and the quick coupling is a kind of joint that can realize pipeline communication or disconnection without tool, and the installation and dismounting process of quick coupling is usually very simple, and does not need complex tool or professional skill, and just simple plug-in can complete dismounting.

[0003] The existing quick coupling, the sealing connection in its interior is generally kept sealing by springing valve stem to valve seat, and the inner and outer ends of valve stem and valve seat connecting place are not simultaneously sealed, so that its sealing performance is limited, for this, we propose a quick coupling for air tightness detection. UTILITY MODEL CONTENT

[0004] The utility model aims at solving one of the technical problems existing in prior art or related art.

[0005] Therefore, the technical scheme that the utility model adopts is as follows:

[0006] A quick coupling for air tightness detection, including: quick coupling body, first sealing assembly, second sealing assembly, quick coupling body includes the valve seat that is arranged in its inner end, the valve stem that is movably installed in the valve seat, the restraint seat that is fixedly installed on one side of its inner end, the sealing spring that is movably installed between valve stem and restraint seat, first sealing assembly includes the sealing element that is movably installed on one side of valve seat, the inner sealing ring and outer sealing ring that are fixedly installed respectively on one side inner end of sealing element, the recess that is opened in sealing element, the first spring that is fixedly installed in recess, second sealing assembly includes the installation cavity that is opened in one side of valve stem, the sealing ring that is movably installed in installation cavity.

[0007] Preferably, the valve stem side is also provided with an inner sealing port, the inner sealing port is matched with the inner sealing ring, and the inner sealing port and the inner sealing ring are both circular ring structures.

[0008] Preferably, the valve seat side is also provided with an outer sealing port, the outer sealing port is matched with the outer sealing ring, and the outer sealing port and the outer sealing ring are both circular ring structures.

[0009] Preferably, the first spring outer end is also fixedly installed with a fixed ring, and the fixed ring is fixed in the quick coupling body, and the fixed ring is a circular ring structure.

[0010] Preferably, the sealing element and the recess are circular ring structures.

[0011] Preferably, a second spring is also fixedly installed inside the mounting cavity, and the outer end of the second spring is fixedly connected to the sealing ring.

[0012] Preferably, the mounting cavity and the sealing ring are circular ring structures.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, the sealing element pressed by the first spring at the outer end of the valve seat and the valve stem can press the sealing element tightly between the valve seat and the valve stem, and press the inner sealing ring and outer sealing ring at the inner and outer ends of the sealing element into the inner sealing port and outer sealing port opened on the valve stem and the valve seat, thereby enhancing the sealing performance of the outer end of the valve seat and the valve stem.

[0015] 2. In this utility model, the sealing ring pressed by the second spring in the installation cavity of the valve seat and the valve stem can be closely attached to the inner wall of the valve seat, thereby enhancing the sealing performance of the valve seat and the inner end of the valve stem. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention;

[0017] Figure 2 This is a side sectional view of the present invention;

[0018] Figure 3 This utility model Figure 2 A magnified view of A in the middle.

[0019] Figure label:

[0020] 100. Quick connector body; 101. Valve seat; 102. Valve stem; 103. Restraint seat; 104. Sealing spring;

[0021] 200. First sealing assembly; 201. Seal; 202. Inner sealing ring; 203. Outer sealing ring; 204. Recess; 205. First spring; 206. Inner sealing port; 207. Outer sealing port; 208. Retaining ring;

[0022] 300, Second sealing assembly; 301, Mounting cavity; 302, Sealing ring; 303, Second spring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0024] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a quick connector for airtightness testing.

[0025] Example 1:

[0026] Combination Figures 1-3 As shown, the present invention provides a quick connector for airtightness testing, comprising: a quick connector body 100, a first sealing assembly 200, and a second sealing assembly 300; the quick connector body 100 includes a valve seat 101 disposed at its inner end, a valve stem 102 movably installed in the valve seat 101, a restraint seat 103 fixedly installed on one side of its inner end, and a sealing spring 104 movably installed between the valve stem 102 and the restraint seat 103; the first sealing assembly 200 includes a sealing element 201 movably installed on one side of the valve seat 101, an inner sealing ring 202 and an outer sealing ring 203 respectively fixedly installed on the inner end of one side of the sealing element 201, a notch 204 opened in the sealing element 201, and a first spring 205 fixedly installed in the notch 204; the second sealing assembly 300 includes an installation cavity 301 opened on one side of the valve stem 102, and a movably installed sealing spring 104 on one side of the installation cavity 301. The valve stem 102 has an inner sealing port 206 on one side, which matches the inner sealing ring 202. Both the inner sealing port 206 and the inner sealing ring 202 are annular structures. The valve seat 101 has an outer sealing port 207 on one side, which matches the outer sealing ring 203. Both the outer sealing port 207 and the outer sealing ring 203 are annular structures. The outer end of the first spring 205 is also fixedly installed with a fixing ring 208, which is fixed inside the quick connector body 100. The fixing ring 208 is annular. The sealing element 201 and the recess 204 are annular structures. The second spring 303 is also fixedly installed in the mounting cavity 301, and the outer end of the second spring 303 is fixedly connected to the sealing ring 302. The mounting cavity 301 and the sealing ring 302 are annular structures.

[0027] Specifically, quick-connect couplings for airtightness testing mainly refer to quick-connect couplings, which are connectors that can connect or disconnect pipelines without tools. In the quick-connect coupling body 100, the sealing element 201, pressed between the valve seat 101 and the outer end of the valve stem 102 by the first spring 205, can press the sealing element 201 tightly against the valve seat 101 and the valve stem 102. This presses the inner sealing ring 202 and the outer sealing ring 203 at the inner and outer ends of the sealing element 201 into the inner sealing port 206 and the outer sealing port 207 opened on the valve stem 102 and valve seat 101, thereby enhancing the sealing performance between the valve seat 101 and the outer end of the valve stem 102. The sealing ring 302, pressed by the second spring 303 in the inner cavity 301 of the inner end of the rod 102, can also be pressed against the inner wall of the inner end of the valve seat 101, thereby enhancing the sealing performance between the valve seat 101 and the inner end of the valve stem 102. Furthermore, the reinforcement at the connection between the inner and outer ends of the valve seat 101 and the valve stem 102 enhances the overall sealing performance of the quick connector body 100. The fixing ring 208 fixedly installed on one side of the quick connector body 100 mainly provides stable support for the first spring 205 and the sealing element 201, thereby ensuring that the first spring 205 firmly presses the sealing element 201 and its inner and outer sealing rings 202 and 203.

[0028] Working principle and usage process of this utility model:

[0029] After the quick connector body 100 is disconnected, the valve stem 102 inside the quick connector body 100 will be pressed against the valve seat 101 by the elastic force of the sealing spring 104. After the valve stem 102 is pressed against the inner end of the valve seat 101, the sealing element 201 pressed by the first spring 205 at the outer end of the valve seat 101 and the valve stem 102 will also be tightly fitted to the outer end face of the connection between the valve seat 101 and the valve stem 102. At the same time, the inner sealing ring 202 on the inner side of the sealing element 201 will also engage and seal against the inner seal on the outer side of the valve stem 102. The sealing performance at the connection between the outer ends of the valve seat 101 and the valve stem 102 is enhanced by the second spring 303. The sealing ring 302 in the inner cavity 301 of the valve stem 102 will also be pressed against the inner wall of the valve seat 101 by the second spring 303, thereby enhancing the sealing performance at the connection between the inner ends of the valve seat 101 and the valve stem 102. In turn, the overall sealing performance of the quick connector body 100 is enhanced by the simultaneous tight sealing of the inner and outer ends of the valve seat 101 and the valve stem 102 after connection.

[0030] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A quick connector for airtightness testing, characterized in that, include: Quick connector body (100), first sealing assembly (200), second sealing assembly (300); The quick connector body (100) includes a valve seat (101) disposed at its inner end, a valve stem (102) movably installed in the valve seat (101), a restraint seat (103) fixedly installed on one side of its inner end, and a sealing spring (104) movably installed between the valve stem (102) and the restraint seat (103). The first sealing assembly (200) includes a sealing element (201) movably installed on one side of the valve seat (101), an inner sealing ring (202) and an outer sealing ring (203) fixedly installed on the inner end of one side of the sealing element (201), a notch (204) opened in the sealing element (201), and a first spring (205) fixedly installed in the notch (204). The second sealing assembly (300) includes a mounting cavity (301) opened on one side of the valve stem (102) and a sealing ring (302) movably mounted on one side of the mounting cavity (301).

2. The quick connector for airtightness testing according to claim 1, characterized in that, An inner sealing port (206) is also provided on one side of the valve stem (102). The inner sealing port (206) is matched with the inner sealing ring (202), and both the inner sealing port (206) and the inner sealing ring (202) are circular structures.

3. The quick connector for airtightness testing according to claim 1, characterized in that, The valve seat (101) is also provided with an outer sealing port (207) on one side. The outer sealing port (207) is matched with the outer sealing ring (203), and both the outer sealing port (207) and the outer sealing ring (203) are circular structures.

4. A quick connector for airtightness testing according to claim 1, characterized in that, The first spring (205) is also fixedly mounted with a fixing ring (208) at its outer end, and the fixing ring (208) is fixed inside the quick connector body (100). The fixing ring (208) is a circular ring structure.

5. A quick connector for airtightness testing according to claim 1, characterized in that, The sealing element (201) and the notch (204) are annular structures.

6. A quick connector for airtightness testing according to claim 1, characterized in that, A second spring (303) is also fixedly installed in the mounting cavity (301), and the outer end of the second spring (303) is fixedly connected to the sealing ring (302).

7. A quick connector for airtightness testing according to claim 1, characterized in that, The mounting cavity (301) and the sealing ring (302) are circular ring structures.

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