A slow-release dust plug, adapter assembly, and connector assembly

Abstract

The application relates to a slow-release dustproof plug, an adapter assembly and a connector assembly. The slow-release dustproof plug comprises a shell, a filling cavity is arranged in the shell, a pressure ball is arranged in the filling cavity, and scattering liquid is filled in the filling cavity. A delivery channel is further arranged in the shell, the delivery channel is communicated with the filling cavity, a sealing film is arranged in the delivery channel to seal the delivery channel, and the pressure ball is configured to drive the scattering liquid to flow out of the delivery channel when the sealing film is broken. The slow-release dustproof plug is provided with the scattering liquid and the pressure ball in the shell. When the slow-release dustproof plug is inserted into the adapter and the sealing film is broken, the scattering liquid can be delivered to the end face of the connector from the delivery channel under the pressure of the pressure ball, the end face of the connector is scattered by the scattering liquid, the reflection of the end face is reduced, the interference of the reflection of the idle port end face on the port detection can be effectively reduced, and the interference of the port reflection can be avoided without using an algorithm.

Description

Technical Field

[0001] This application relates to the field of optical communication technology, specifically to a slow-release dust plug, an adapter assembly, and a connector assembly. Background Technology

[0002] Currently, passive optical network systems include optical line terminals (OLTs), optical distribution networks (ODNs), and multiple optical access network user terminals. An ODN typically consists of four parts: splitters, backbone fiber, distribution fiber, and branch fiber. Because ODNs transmit optical signals from the OLT to multiple user terminals via point-to-multipoint connections, they cover a wide geographical area, have a large number of branches, and present complex scenarios. This makes it difficult to identify the port connections of the splitters in an ODN. Since most ODN applications are passive, active devices cannot be used to monitor the distribution of optical fibers and the usage of ports. Therefore, identifying the geographical distribution of optical fibers and the usage of ports is extremely challenging.

[0003] In related technologies, when using reflection technology for port detection and identification, the end-face reflection of idle ports can interfere with the reflected signal of the reflector, leading to incorrect detection data and ultimately incorrect port identification. Currently, the most common approach is to use algorithms to avoid the interference of the end-face reflection of idle ports with the reflected signal of the reflector. However, the success rate of identifying idle ports by avoiding end-face reflection through algorithms is low, and multiple peaks affect the feedback of the link.

[0004] Therefore, it is necessary to design a slow-release dust plug to solve the above problems. Summary of the Invention

[0005] This application provides a slow-release dust plug, an adapter assembly, and a connector assembly, which can solve the technical problem of end-face reflection of idle ports and interference of reflected signals from reflectors in related technologies, and does not require the use of algorithms to avoid end-face reflection of idle ports.

[0006] In a first aspect, embodiments of this application provide a slow-release dust plug, comprising: a housing having a filling cavity therein, a pressure ball disposed therein, and the filling cavity being filled with a scattering liquid; the housing also having a delivery channel communicating with the filling cavity, and a sealing membrane sealing the delivery channel therein; the pressure ball being configured to drive the scattering liquid out of the delivery channel when the sealing membrane ruptures.

[0007] In conjunction with the first aspect, in one embodiment, the pressure ball is filled with liquid.

[0008] In conjunction with the first aspect, in one embodiment, the outer surface of the housing has a compression zone, and when the compression zone is compressed, the sealing membrane is ruptured under pressure.

[0009] In conjunction with the first aspect, in one embodiment, the outer protrusion of the housing forms a boss, the extrusion area is disposed on the boss, and the boss is located between the sealing membrane and the pressure ball.

[0010] In conjunction with the first aspect, in one embodiment, the end of the delivery channel away from the filling cavity has an opening, and the housing has an installation area at the opening; the slow-release dust plug further includes absorbent cotton, which is fitted onto the installation area.

[0011] In conjunction with the first aspect, in one embodiment, the mounting area is recessed inward from the outer surface of the housing to form a groove, the absorbent cotton is mounted in the groove, and the groove is provided with protrusions that prevent the absorbent cotton from falling out.

[0012] In conjunction with the first aspect, in one embodiment, the housing has a compression area, the compression area and the mounting area are distributed on opposite sides of the sealing film, and the compression area and the mounting area are connected by a connecting area, wherein the wall thickness of the housing in the compression area is less than the wall thickness of the connecting area, and the wall thickness of the housing in the mounting area is less than the wall thickness of the connecting area.

[0013] In conjunction with the first aspect, in one embodiment, the housing is provided with a liquid injection hole, the liquid injection hole is connected to the filling cavity, and the liquid injection hole is sealed by a plug.

[0014] Secondly, embodiments of this application provide an adapter assembly, which includes an adapter and the aforementioned slow-release dust plug.

[0015] Thirdly, embodiments of this application provide a connector assembly, comprising: a connector and an adapter, the connector being inserted into one end of the adapter; and the aforementioned slow-release dust plug, the slow-release dust plug being inserted into the other end of the adapter.

[0016] In conjunction with the third aspect, in one embodiment, the adapter is provided with a ceramic sleeve. When the slow-release dust plug is inserted into the adapter, the ceramic sleeve squeezes the housing of the slow-release dust plug, causing the sealing membrane inside the housing to rupture under pressure, and the pressure ball inside the housing drives the scattering liquid to flow out from the delivery channel to the end face of the connector.

[0017] The beneficial effects of the technical solutions provided in this application include:

[0018] By placing a scattering liquid and a pressure ball inside the housing of the slow-release dust plug, when the slow-release dust plug is inserted into the adapter and the sealing film ruptures, the scattering liquid can be delivered from the delivery channel to the end face of the connector under the pressure of the pressure ball. This allows the scattering liquid to scatter the light from the connector end face, reducing end face reflection. This effectively reduces the interference of end face reflection from the idle port on port detection, and eliminates the need for algorithms to avoid port reflection interference. This solves the technical problem of end face reflection from the idle port interfering with the reflection signal of the reflector in related technologies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded view of a slow-release dust plug provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of a partial assembly structure of a slow-release dust plug provided in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the pressure ball in an expanded state according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the pressure ball in a compressed state provided in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the laser welding structure between the front cavity and the rear cover provided in an embodiment of this application;

[0025] Figure 6 A partial structural schematic diagram of the housing provided in an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the structure of a connector assembly provided in an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the structure of the ceramic sleeve starting to compress the boss according to an embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the structure of the slow-release dust plug inserted into the adapter according to an embodiment of this application.

[0029] In the picture:

[0030] 100. Slow-release dust plug;

[0031] 1. Shell; 11. Filling cavity; 111. Front cavity; 112. Rear cavity; 12. Conveying channel; 121. Front channel; 122. Rear channel;

[0032] 13. Front cavity; 131. Extrusion area; 132. Opening; 133. Mounting area; 134. Groove; 135. Protrusion; 136. Connecting area;

[0033] 14. Back cover; 141. Injection hole; 15. Sealing film;

[0034] 2. Pressure ball; 3. Absorbent cotton; 4. Hole plug;

[0035] 200. Adapter; 201. Ceramic sleeve;

[0036] 300, Connector; 301, Ferrule. Detailed Implementation

[0037] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0038] In related technologies, when using Bragg gratings to perform port detection on reflections of specific wavelengths, end-face reflection will reflect waves of all wavelengths, including the detection wave. If end-face reflection is severe (UPC), the system may identify the detection wave reflected back from the end-face as the wave reflected back from the reflector, leading to some system identification errors and affecting the system's identification accuracy.

[0039] This application provides a slow-release dust plug, adapter assembly, and connector assembly, which can solve the technical problem of end-face reflection of idle ports and interference of reflected signals from reflectors in related technologies, and does not require the use of algorithms to avoid end-face reflection of idle ports.

[0040] See Figure 1 and Figure 2As shown, a slow-release dust plug 100 provided in an embodiment of this application may include: a housing 1, wherein the housing 1 has a filling cavity 11, the filling cavity 11 is provided with a pressure ball 2, and the filling cavity 11 is filled with a scattering liquid. It should be understood that both the scattering liquid and the pressure ball 2 are contained within the filling cavity 11, and the scattering liquid is located between the outer surface of the pressure ball 2 and the inner wall surface of the filling cavity 11; the housing 1 also has a delivery channel 12, the delivery channel 12 is connected to the filling cavity 11, and the delivery channel 12 is provided with a sealing membrane 15 to seal the delivery channel 12, wherein the sealing membrane... The sealing membrane 15 can be located at the junction of the conveying channel 12 and the filling cavity 11, or at one end of the conveying channel 12 away from the filling cavity 11, or at any position between the two ends of the conveying channel 12. The sealing membrane 15 can seal the scattering liquid inside the filling cavity 11 and prevent the scattering liquid from flowing out from one end of the conveying channel 12. It should be understood that since the conveying channel 12 is connected to the filling cavity 11, after the filling cavity 11 is filled with scattering liquid, some of the scattering liquid will also enter the conveying channel 12 and reach the sealing membrane 15. When the sealing membrane 15 is not broken, there is no scattering liquid on the other side of the sealing membrane 15.

[0041] The pressure ball 2 is configured to drive the scattering liquid out of the delivery channel 12 when the sealing membrane 15 ruptures. That is, the pressure ball 2 can provide a certain pressure. After the sealing membrane 15 ruptures, the scattering liquid, under the pressure of the pressure ball 2, is delivered from the delivery channel 12 to its outlet. When the slow-release dust plug 100 is inserted into an idle adapter 200, the scattering liquid output from the delivery channel 12 reaches the end face of the connector 300 inside the adapter 200. The scattering liquid can scatter the light from the end face of the connector 300, preventing the adapter 200 from reflecting light from the idle port.

[0042] In this embodiment, by setting a scattering liquid and a pressure ball 2 inside the housing 1 of the slow-release dust plug 100, when the slow-release dust plug 100 is inserted into the adapter 200 and the sealing film 15 is ruptured, the scattering liquid can be delivered from the delivery channel 12 to the end face of the connector 300 inside the adapter 200 under the pressure of the pressure ball 2, so that the scattering liquid scatters the light on the end face of the connector 300, reducing end face reflection. This can effectively reduce the interference of end face reflection of the idle port on port detection, and there is no need to use an algorithm to avoid the interference of port reflection. This solves the technical problem of end face reflection of the idle port and the interference of the reflection signal of the reflector in the related technology. The success rate of identification is high, and there will be no multiple peaks affecting the feedback of the link.

[0043] In the above embodiments, the sealing film 15 is preferably a thin film, which can both block the scattering liquid and make it easy to break the sealing film 15 during subsequent use.

[0044] In some embodiments, the pressure ball 2 may be filled with a liquid, such as a matching liquid. In this embodiment, the pressure ball 2 is initially filled with liquid, which causes the pressure ball 2 to expand in volume. Before the scattering liquid is injected into the filling cavity 11, the pressure ball 2 is in an expanded state (see...). Figure 3 As shown in the diagram, while the scattering liquid is injected under pressure into the filling cavity 11, the pressure ball 2 is compressed, causing its volume to decrease. The reduced volume of the pressure ball 2 exerts an outward pressure on the scattering liquid. Once a certain pressure of scattering liquid has been reached, the injection stops, and the scattering liquid and pressure ball 2 remain within the filling cavity 11. At this point, the pressure ball 2 is in a compressed state (see...). Figure 4 (As shown); when the sealing membrane 15 ruptures, the scattering liquid is output from the delivery channel 12 under the pressure of the pressure ball 2.

[0045] Of course, in other embodiments, the pressure ball 2 can also be filled with other media that can achieve the volume expansion and compression of the pressure ball 2, such as gas.

[0046] See Figure 1 As shown, in some optional embodiments, the housing 1 is provided with a liquid injection hole 141, which communicates with the filling cavity 11 and is sealed by a plug 4. When injecting the scattering liquid into the filling cavity 11, it can be injected through the liquid injection hole 141. After the scattering liquid is added to the filling cavity 11 at a certain pressure, the scattering liquid and the pressure ball 2 are held in the filling cavity 11 by the plug 4.

[0047] The housing 1 can be assembled from separate parts, which facilitates the assembly of the pressure ball 2 into the housing 1. For example, it can be assembled using a front cavity 13 and a rear cover 14 (see...). Figure 1 As shown), the housing 1 includes a front cavity 13 and a rear cover 14. The front cavity 13 and the rear cover 14 are assembled together to form a sealed filling cavity 11. The front cavity 13 and the rear cover 14 can be laser-welded to form a sealed cavity (see...). Figure 5 As shown, the injection hole 141 can be located on the rear cover 14. Alternatively, the housing 1 can also be a split structure with upper and lower parts. In other embodiments, the housing 1 can be integrally molded, with the pressure ball 2 placed into the filling cavity 11 during the molding process of the housing 1.

[0048] See Figure 3As shown, in one embodiment, the housing 1 has a compression area 131 on its exterior. When the compression area 131 is compressed, the sealing membrane 15 ruptures under pressure. The compression area 131 can be manually compressed by an operator, or it can be compressed by the adapter 200 during the insertion of the slow-release dust plug 100 into the adapter 200. Compression of the compression area 131 causes the sealing membrane 15 to rupture, thereby automatically driving the diffusion fluid to flow out to the end face of the connector 300 after the slow-release dust plug 100 is inserted into the adapter 200. In this embodiment, the compression area 131 is preferably configured to rupture the sealing membrane 15 by compression from the adapter 200 (see [link to relevant documentation]). Figure 8 and Figure 9 As shown, this reduces the number of manual steps required by the operator. The operator only needs to insert the slow-release dust plug 100 into the adapter 200 along the axial direction to indirectly rupture the sealing membrane 15.

[0049] The aforementioned extrusion zone 131 can be located on the side of the sealing membrane 15 near the pressure ball 2, or the extrusion zone 131 can extend along the axis of the conveying channel 12 from one side of the sealing membrane 15 to the other side of the sealing membrane 15.

[0050] In other embodiments, the compression area 131 may not be provided outside the housing 1. Other methods may be used to break the sealing film 15. For example, the sealing film 15 may be provided at the end of the delivery channel 12. When the slow-release dust plug 100 is inserted into the adapter 200, the sealing film 15 may be broken through the front end of the insert 301 in the connector 300.

[0051] Further, see Figure 6 As shown, in one embodiment, the outer shell 1 protrudes to form a boss, and the compression area 131 is disposed on the boss, which is located between the sealing membrane 15 and the pressure ball 2. That is, in this embodiment, the compression area 131 is disposed on the side of the sealing membrane 15 away from the connector 300, and the compression area 131 is disposed on the boss. When the slow-release dust plug 100 is inserted into the adapter 200, the ceramic sleeve 201 inside the adapter 200 can compress the boss, causing the internal pressure of the filling cavity 11 to increase. When the slow-release dust plug 100 is completely inserted into the adapter 200, the pressure rises to the highest value, causing the sealing membrane 15 to rupture under the pressure. In this embodiment, since there is a scattering liquid on the side of the sealing membrane 15 near the pressure ball 2 before the sealing membrane 15 ruptures, the boss is disposed at the location where the scattering liquid exists, interfering with the ceramic sleeve 201, which helps to cause the ceramic sleeve 201 to compress the compression area 131, causing the sealing membrane 15 to rupture. In this embodiment, the boss is preferably disposed at the tail end of the conveying channel 12.

[0052] Based on the above technical solutions, see [link to relevant documentation]. Figure 3As shown, in one embodiment, the end of the delivery channel 12 away from the filling cavity 11 has an opening 132, and the housing 1 has an installation area 133 at the opening 132; the slow-release dust plug 100 also includes absorbent cotton 3, which is sleeved on the installation area 133. In this embodiment, the absorbent cotton 3 is assembled at the front end of the housing 1. When the slow-release dust plug 100 is inserted into the adapter 200, the absorbent cotton 3 is located inside the ceramic sleeve 201. When the released scattering liquid fills the ceramic sleeve 201, the absorbent cotton 3 absorbs the scattering liquid and expands. Since the outer side of the absorbent cotton 3 is the ceramic sleeve 201, the absorbent cotton 3 cannot expand outward. At this time, the absorbent cotton 3 can only expand inward. After the absorbent cotton 3 expands, it will compress the housing 1, causing the delivery channel 12 to narrow or even close at this position (see...). Figure 9 As shown in the figure, as the scattering liquid on the end face of connector 300 and the surface of the absorbent cotton 3 evaporates and disappears, the volume of absorbent cotton 3 slowly decreases. The shell 1 itself has a certain elasticity, and under the action of the pressure ball 2, the scattering liquid causes the delivery channel 12 to open slowly, delivering the scattering liquid to the end face of connector 300 (see figure). Figure 9 (As shown); During use, after the absorbent cotton 3 absorbs the scattering liquid, it squeezes the shell 1, reducing the outflow rate of the scattering liquid. As the scattering liquid evaporates, the absorbent cotton 3 shrinks, the delivery channel 12 expands, and the outflow rate of the scattering liquid increases, eventually reaching a dynamic equilibrium so that the end face of the connector 300 maintains a certain liquid concentration of the scattering liquid.

[0053] See Figure 1 and Figure 6 As shown, in some embodiments, the mounting area 133 is recessed inward from the outer surface of the housing 1 to form a groove 134. The absorbent cotton 3 is installed in the groove 134, and the groove 134 is provided with a protrusion 135 to prevent the absorbent cotton 3 from falling out. In this embodiment, the outer diameter of the area where the groove 134 is located on the housing 1 is smaller than the outer diameter of other areas connected to the groove 134. With this configuration, when the inner diameter of the conveying channel 12 remains unchanged, the wall thickness of the housing 1 in the mounting area 133 is thinner and more elastic, which is beneficial for the absorbent cotton 3 to expand and deform the mounting area 133, thus narrowing the conveying channel 12. At the same time, the protrusion 135 in the groove 134 can ensure the stability of the installation of the absorbent cotton 3.

[0054] Preferred, see Figure 3As shown, the housing 1 has a compression area 131, which is distributed on opposite sides of the sealing film 15 with the mounting area 133. The compression area 131 and the mounting area 133 are connected by a connecting area 136. The wall thickness of the housing 1 in the compression area 131 is less than the wall thickness of the connecting area 136, and the wall thickness of the housing 1 in the mounting area 133 is less than the wall thickness of the connecting area 136. In this embodiment, the wall thickness of the extrusion zone 131 is designed to be relatively thin, which is beneficial for the extrusion zone 131 to deform after being extruded, thereby increasing the pressure in the filling cavity 11. The wall thickness of the installation zone 133 is also designed to be relatively thin, which is also beneficial for the installation zone 133 to deform after being expanded and extruded by the absorbent cotton 3, thereby narrowing the conveying channel 12. This also makes the installation zone 133 and the extrusion zone 131 more elastic and easier to recover after deformation. The wall thicknesses of the extrusion zone 131 and the installation zone 133 can be the same or different. On the other hand, the wall thickness of the connecting zone 136 is designed to be relatively thick, which can improve the structural strength of the housing 1 at the position of the conveying channel 12 and ensure that the housing 1 can be installed in the ceramic sleeve 201.

[0055] In this application, the filling cavity 11 may include a front cavity 111 and a rear cavity 112, which are connected. The cross-sectional dimension of the front cavity 111 is smaller than that of the rear cavity 112. The pressure ball 2 is disposed in the rear cavity 112. The conveying channel 12 may also include a front channel 121 and a rear channel 122, which are connected. The rear channel 122 is connected to the front cavity 111. The extrusion area 131 is disposed in the rear channel 122, and the connection area 136 and the installation area 133 are disposed in the front channel 121.

[0056] This application also provides an adapter assembly, which may include an adapter 200 and the aforementioned slow-release dust plug 100. The slow-release dust plug 100 used in this embodiment can be any of the slow-release dust plugs 100 described above, and will not be repeated here. The adapter 200 may contain a ceramic sleeve 201. When one end of the adapter 200 is inserted into the connector 300, the connector 300's insert 301 will be inserted into the ceramic sleeve 201. When the slow-release dust plug 100 is inserted into the other end of the adapter 200, a portion of the slow-release dust plug 100 will enter the ceramic sleeve 201. More specifically, the portion of the housing 1 with the delivery channel 12 will enter the ceramic sleeve 201. During the insertion of the slow-release dust plug 100 into the adapter 200, the ceramic sleeve 201 will compress the protrusions on the outside of the housing 1, causing an increase in internal pressure. After the slow-release dust plug 100 is fully inserted, its internal pressure reaches its maximum value, and the sealing membrane 15 ruptures under the pressure.

[0057] See Figure 7As shown, this application also provides a connector assembly, which may include: a connector 300 and an adapter 200, the connector 300 being inserted into one end of the adapter 200; and the aforementioned slow-release dust plug 100, the slow-release dust plug 100 being inserted into the other end of the adapter 200.

[0058] Further, see Figure 8 and Figure 9 As shown, in one embodiment, a ceramic sleeve 201 is provided inside the adapter 200. When the slow-release dust plug 100 is inserted into the adapter 200, the ceramic sleeve 201 squeezes the housing 1 of the slow-release dust plug 100, causing the sealing membrane 15 inside the housing 1 to rupture under pressure, and the pressure ball 2 inside the housing 1 drives the scattering liquid to flow out from the delivery channel 12 to the end face of the connector 300.

[0059] The slow-release dust plug 100 provided in this embodiment will automatically release the scattering liquid inside the slow-release dust plug 100 after the sealing membrane 15 is ruptured. By inserting the slow-release dust plug 100 into the idle port, the end face of the ferrule 301 of the connector 300 can maintain a certain concentration of scattering liquid. The scattering liquid can scatter the light on the end face. By inserting the dust plug, the adverse effects of end face reflection on signal recognition can be solved. Furthermore, the slow-release dust plug 100 will not affect the normal fiber optic connection after it is removed.

[0060] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0061] It should be noted that, in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A slow-release dust plug, characterized in that, It includes: The housing (1) has a filling cavity (11) inside, a pressure ball (2) is provided inside the filling cavity (11), and the filling cavity (11) is filled with a scattering liquid; The housing (1) is also provided with a conveying channel (12), which is connected to the filling cavity (11), and a sealing membrane (15) is provided in the conveying channel (12) to seal the conveying channel (12); The pressure ball (2) is configured to drive the scattering liquid out of the delivery channel (12) when the sealing membrane (15) ruptures.

2. The slow-release dust plug as described in claim 1, characterized in that, The pressure ball (2) is filled with liquid.

3. The slow-release dust plug as described in claim 1, characterized in that, The outer shell (1) has a compression area (131). When the compression area (131) is compressed, the sealing film (15) is ruptured under pressure.

4. The slow-release dust plug as described in claim 3, characterized in that, The housing (1) protrudes outward to form a boss, and the extrusion area (131) is provided on the boss. The boss is located between the sealing membrane (15) and the pressure ball (2).

5. The slow-release dust plug as described in any one of claims 1-4, characterized in that, The conveying channel (12) has an opening (132) at one end away from the filling cavity (11), and the housing (1) has an installation area (133) at the opening (132); The slow-release dust plug also includes absorbent cotton (3), which is fitted onto the installation area (133).

6. The slow-release dust plug as described in claim 5, characterized in that, The mounting area (133) is recessed inward from the outer surface of the housing (1) to form a groove (134), the absorbent cotton (3) is installed in the groove (134), and the groove (134) is provided with a protrusion (135) to prevent the absorbent cotton (3) from falling out.

7. The slow-release dust plug as described in claim 5, characterized in that, The housing (1) has a compression area (131), which is distributed on opposite sides of the sealing film (15) along with the mounting area (133). The compression area (131) and the mounting area (133) are connected by a connecting area (136). The wall thickness of the housing (1) in the compression area (131) is less than the wall thickness of the connecting area (136), and the wall thickness of the housing (1) in the mounting area (133) is less than the wall thickness of the connecting area (136).

8. The slow-release dust plug as described in claim 1, characterized in that, The housing (1) is provided with a liquid injection hole (141), which is connected to the filling cavity (11), and the liquid injection hole (141) is blocked by a plug (4).

9. An adapter assembly, characterized in that, It includes an adapter (200) and a slow-release dust plug (100) as claimed in any one of claims 1-8.

10. A connector assembly, characterized in that, It includes: A connector (300) and an adapter (200), wherein the connector (300) is inserted into one end of the adapter (200); And a slow-release dust plug (100) as described in any one of claims 1-8, the slow-release dust plug (100) being inserted into the other end of the adapter (200).

11. The connector assembly as claimed in claim 10, characterized in that, The adapter (200) is provided with a ceramic sleeve (201). When the slow-release dust plug (100) is inserted into the adapter (200), the ceramic sleeve (201) squeezes the housing (1) of the slow-release dust plug (100), causing the sealing membrane (15) inside the housing (1) to rupture under pressure, and the pressure ball (2) inside the housing (1) drives the scattering liquid to flow out from the delivery channel (12) to the end face of the connector (300).

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