Plug and conduit assembly for a refrigeration appliance

Abstract

The invention provides a plug and pipe assembly for a refrigeration device, wherein the plug comprises a first plug body, which is hollow and extends in a height direction, and has a first part and a second part located on two sides of the height direction respectively, the outer diameter of the first part is larger than that of the second part, the plug further has a second plug body connected with the first plug body, the second plug body is located adjacent to the second part and forms an inner cavity with the first plug body, and a disconnection part is formed between the first plug body and the second plug body. In use, the plug is first connected to the end of the pipe body to seal the pipe body, then the first plug body and the second plug body are separated during the installation of the pipe body, and after the separation, the first plug body is sealed between the through hole of the partition plate of the refrigeration device and the pipe body, so that the sealing of the pipe body is more convenient, and the manufacturing cost of the plug is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration equipment, in particular to a plug and pipe assembly for refrigeration equipment. BACKGROUND

[0002] In the existing refrigeration equipment, a first chamber for placing articles and a second chamber for placing execution elements (compressor, evaporator, etc.) are included, and the first chamber and the second chamber are separated by a partition plate (commonly known as a bottom steel). The refrigeration equipment is also provided with a plurality of pipe bodies passing through the bottom steel to connect the execution elements in the first chamber and the second chamber, so that the execution elements can perform cooling, defrosting and other actions in the first chamber.

[0003] In the manufacturing process of the refrigeration equipment, two plugs need to be provided on the pipe body, one plug is provided at the end of the pipe body to prevent external impurities from entering the pipe body during transportation and connection in the refrigeration equipment, and the other plug is provided between the through hole of the pipe body passing through the bottom steel to prevent the foaming material from entering the second chamber during foaming in the first chamber. The provision of two plugs makes the manufacturing process of the refrigeration equipment somewhat cumbersome and increases the manufacturing cost of the refrigeration equipment. SUMMARY

[0004] The purpose of the present application is to provide some plugs and pipe assemblies that make the sealing of the pipe body more convenient during the manufacturing process of the refrigeration equipment.

[0005] To achieve the above-mentioned purpose, the present application provides a plug for refrigeration equipment, comprising a first plug body, the first plug body is hollow along the height direction and has a first part and a second part located on both sides of the height direction respectively, the outer diameter of the first part is larger than that of the second part, the plug further comprises a second plug body connected with the first plug body, the second plug body is arranged adjacent to the second part and forms an inner cavity with the first plug body, and a disconnection part is formed between the first plug body and the second plug body.

[0006] The plug is used to connect the end of the pipe body to seal the pipe body, during the installation process of the pipe body, the first plug body and the second plug body are separated, the first plug body is sealed between the through hole of the partition plate of the refrigeration equipment and the pipe body, and the second plug body is connected to the end of the pipe body after being separated from the first plug body. As a further improvement of the present application, the second plug body has a pipe plug part for sealing the pipe body, the pipe plug part is arranged along the axis direction of the plug.

[0007] As a further improvement of the present application, the pipe blocking part is located below the first plug body, and has a hollow tubular part, a sealing part closing one end of the tubular part away from the first plug body, and the breaking part is formed between the pipe blocking part and the first plug body.

[0008] As a further improvement of the present application, the second plug body further comprises a bottom wall located below the first plug body, a peripheral wall extending from the edge of the bottom wall towards the first plug body, and the pipe blocking part extends upward from the side of the bottom wall close to the first plug body, and the breaking part is formed between the peripheral wall and the first plug body.

[0009] As a further improvement of the present application, the first plug body is made of flexible material, the second plug body further comprises a connecting part connected to the inner wall of the first plug body, and the plug comprises a first state in which the pipe blocking part is connected to the connecting part on the side away from the inner cavity, and a second state in which the first plug body is flipped inside out from the first state and the pipe blocking part is located in the inner cavity.

[0010] As a further improvement of the present application, the thickness of the breaking part is less than the wall thickness at the connection between the first plug body and / or the second plug body, or a notch is formed at the breaking part.

[0011] As a further improvement of the present application, the first plug body comprises a sealing part in the shape of a truncated cone, and a limiting part extending from the outer wall of the sealing part in the direction away from the axis of the sealing part, and the limiting part is located at one end of the sealing part with larger outer diameter.

[0012] As a further improvement of the present application, the plug is made of flexible material.

[0013] The present application further provides a pipe assembly comprising a pipe body and the above-mentioned plug connected to the end of the pipe body to seal the pipe body.

[0014] The present application has the following advantages:

[0015] The plug and the pipe assembly provided by the present application have the following advantages: the plug is first connected to the end of the pipe body to seal the pipe body, and the first plug body and the second plug body are separated during the installation of the pipe body, and the first plug body is sealed between the through hole of the partition plate of the refrigeration equipment and the pipe body after the separation, which makes the sealing of the pipe body more convenient and reduces the manufacturing cost of the plug.

[0016] In addition, after the second plug body is separated from the first plug body and connected to the end of the pipe body, some impurities can be prevented from entering the pipe body during the refrigeration process of the refrigeration equipment, and the pipe body can be pressurized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The present application provides a structural schematic diagram of a refrigeration equipment;

[0018] Figure 2 Structure diagram of the plug provided by the first embodiment of the present application;

[0019] Figure 3 Figure 2 Structure diagram of the plug provided by the first embodiment of the present application;

[0020] Figure 4 Structure diagram of the pipe assembly provided by the present application comprising Figure 2 Structure diagram of the pipe assembly provided by the present application comprising

[0021] Figure 5 Structure diagram of the plug provided by the second embodiment of the present application;

[0022] Figure 6 Figure 5 Structure diagram of the plug provided by the second embodiment of the present application;

[0023] Figure 7 Structure diagram of the pipe assembly provided by the present application comprising Figure 5 Structure diagram of the pipe assembly provided by the present application comprising

[0024] Figure 8 Structure diagram of the plug provided by the third embodiment of the present application;

[0025] Figure 9 Figure 8 Structure diagram of the plug provided by the third embodiment of the present application;

[0026] Figure 10 Structure diagram of the pipe assembly provided by the present application comprising Figure 8 Structure diagram of the pipe assembly provided by the present application comprising

[0027] Figure 11 Structure diagram of the plug provided by the fourth embodiment of the present application;

[0028] Figure 12 Figure 11 Structure diagram of the plug provided by the fourth embodiment of the present application in the first state;

[0029] Figure 13 Figure 11 Structure diagram of the plug provided by the fourth embodiment of the present application in the second state;

[0030] Figure 14 Structure diagram of the pipe assembly provided by the present application comprising Figure 11 Structure diagram of the pipe assembly provided by the present application comprising

[0031] Figure 15 Structure diagram of the plug in the first embodiment of the present application after changing from the first state to the second state and connecting with the pipe body. Figure 11

[0032] Figure 16 ​Four embodiments of the plug provided by the present application and the sectional view of the pipe body and the partition plate after assembly are shown in the following figures. Specific embodiments

[0034] The present application will be described in detail below with reference to the embodiments shown in the drawings. However, the embodiments do not limit the present application, and the changes in the mechanism, method, or function made by those skilled in the art based on the embodiments are included in the protection scope of the present application.

[0035] The terms for indicating the spatial relative position such as "upper", "lower", "left", "right", "front", "back", etc. used herein are for the purpose of convenient description to describe the relationship of one feature relative to another feature as shown in the drawings. It can be understood that the terms for indicating the spatial relative position can be intended to include different orientations other than the orientations shown in the drawings, and should not be understood as the limitation of the claims. In addition, the description word "horizontal" used herein is not completely equal to along the direction perpendicular to the gravity direction, and a certain angle of inclination is allowed.

[0036] The present application provides the plug 10, 20, 30, 40, which is particularly suitable for being connected to the end of the pipe body 150, and facilitates the installation of the pipe body 150 in the refrigeration equipment 100.

[0037] As shown in the drawings, Figure 1 The refrigeration equipment includes a cabinet 110, a first chamber 120 and a second chamber 130 located in the cabinet 110, a partition plate 140 for separating the first chamber 120 and the second chamber 130, and a through hole 160 formed in the partition plate 140. In the refrigeration equipment 100, a pipe body 150 is provided to pass through the partition plate 140 to connect the first chamber 120 and the second chamber 130. The plug 10, 20, 30, 40 provided by the present application can seal the end of the pipe body 150 and the through hole 160.

[0038] As shown in the drawings, Figures 2-3 The plug 10 provided by the first embodiment of the present application includes a first plug body 11 and a second plug body 12 connected to the first plug body 11. The first plug body 11 is hollow and extends along the height direction, and has a first part and a second part located on the two sides of the height direction, respectively. The outer diameter of the first part is greater than the outer diameter of the second part. The second plug body 12 is arranged adjacent to the second part and forms an inner cavity 13 with the hollow first plug body 11. A disconnection part 14 is formed between the first plug body 11 and the second plug body 12.

[0039] The plug 10 is connected to the end of the pipe body 150, i.e. the end of the pipe body 150 is inserted into the inner cavity 13, and the plug 10 forms a surrounding for the end of the pipe body 150. Further, the second plug body 12 has a pipe stopper 15 for sealing the pipe body 150, which is arranged along the axial direction of the second plug body 12, and the pipe stopper 15 seals the sealing of the pipe body 150 when the end of the pipe body 150 is accommodated in the inner cavity 13. The first plug body 11 and the second plug body 12 are preferably coaxially arranged.

[0040] The breaking part 14 is a relatively weak part of the plug 10, so that the first plug body 11 and the second plug body 12 can be broken under force. In a specific arrangement, the thickness of the breaking part 14 is less than the wall thickness of the connection between the first plug body 11 and / or the second plug body 12, or a notch is arranged at the breaking part 14, so that the connection between the breaking part 14 and the first plug body 11 and / or the second plug body 12 is relatively weak.

[0041] In the present embodiment, the pipe stopper 15 is located below the first plug body 11, and has a hollow tubular part 151 and a sealing part 152 for sealing the end of the tubular part 151 away from the first plug body 11, so that when the end of the pipe body 150 is inserted into the tubular part 151, external impurities can be prevented from entering the pipe body 150. In the present embodiment, the second plug body 12 and the pipe stopper 15 can be regarded as the same component. The breaking part 14 is formed between the pipe stopper 15 and the first plug body 11.

[0042] As shown in Figure 4 In a specific use, the plug 10 is first connected to the end of the pipe body 150 to prevent external impurities from entering the pipe body 150. Then, as shown in Figure 16 In the manufacturing process of the refrigeration device 100, when the pipe body 150 with the plug 10 passes through the partition plate 140 in the refrigeration device 100, the second plug body 12 passes through the through hole 160 on the partition plate 140, and the first plug body 11 cannot pass through the through hole 160 completely due to the outer diameter of the first part being larger than the outer diameter of the second part, and is broken at the breaking part 14 under the further action of the pipe body. After breaking, the first plug body 11 remains on the partition plate 140, sealing between the through hole 160 for the pipe body 150 to pass through and the pipe body 150, and the second plug body 12 disconnected from the first plug body 11 continues to be connected to the end of the pipe body 150 to seal one end of the pipe body 150. The second plug body 12 can be manually pulled out of the pipe body 150 when not needed. It is conceivable that the outer diameter of the first part is larger than the diameter of the through hole 160, and the outer diameter of the second part and the second plug body 12 should be smaller than the diameter of the through hole 160.

[0043] Specifically, returning to Figure 2The first plug body 11 comprises a sealing part 111 in the shape of a truncated cone, and a limiting part 112 extending from the outer side wall of the sealing part 111 and away from the axis of the sealing part 111. The limiting part 112 is located at one of the two ends of the sealing part 111 in the height direction, and the outer diameter of the one end is larger than that of the other end. The sealing part 111 in the shape of a truncated cone can guide the second plug body 12 to be inserted into the through hole 160 on the partition plate 140, and the limiting part 112 can prevent the first plug body 11 from passing through the through hole 160 completely.

[0044] As shown in FIG. 1, the plug 10 provided by the first embodiment of the present application comprises a first plug body 11 and a second plug body 12 connected to the first plug body 11. The first plug body 11 comprises a sealing part 111 in the shape of a truncated cone, and a limiting part 112 extending from the outer side wall of the sealing part 111 and away from the axis of the sealing part 111. The limiting part 112 is located at one of the two ends of the sealing part 111 in the height direction, and the outer diameter of the one end is larger than that of the other end. The sealing part 111 in the shape of a truncated cone can guide the second plug body 12 to be inserted into the through hole 160 on the partition plate 140, and the limiting part 112 can prevent the first plug body 11 from passing through the through hole 160 completely. Figures 5-6 As shown in FIG. 2, the plug 20 provided by the second embodiment of the present application comprises a first plug body 21 and a second plug body 22 connected to the first plug body 21. The structure of the first plug body 21 is similar to that of the first plug body 11 in the first embodiment, and thus will not be described herein. The difference between the second embodiment and the first embodiment is that the second plug body 22 comprises a bottom wall 222 located below the first plug body 21, a peripheral wall 223 extending from the edge of the bottom wall 222 and towards the first plug body 21, and a pipe blocking part 221 extending upwards from the side of the bottom wall 222 close to the first plug body 21. The second plug body 22 and the first plug body 21 enclose an inner cavity 23. When the end of the pipe body 150 is inserted into the inner cavity 23, the pipe blocking part 221 can block the end of the pipe body 150.

[0045] In the second embodiment, the pipe blocking part 221 is solid and blocks the pipe body 150 by being inserted into the pipe body 150. In other embodiments, the pipe blocking part 221 can also block the pipe body 150 by surrounding the end of the pipe body 150 as in the first embodiment. The disconnecting part 24 of the second embodiment is formed between the peripheral wall 223 and the first plug body 21. The thickness of the disconnecting part 24 is smaller than the thickness of the wall at the connection between the first plug body 21 and / or the second plug body 22. Alternatively, a slot can be formed in the disconnecting part 24 to reduce the connection strength between the disconnecting part 24 and the first plug body 21 and / or the second plug body 22.

[0046] As shown in FIG. 3, when the plug 20 of the second embodiment is connected to the end of the pipe body 150, the pipe body 150 is accommodated in the inner cavity 23, and the pipe blocking part 221 is inserted into the pipe body 150. Thus, external impurities cannot enter the pipe body 150. The use of the plug 20 of the second embodiment is similar to that of the plug 10 of the first embodiment, and thus will not be described herein. Figure 7 It is conceivable that the position of the disconnecting part 24 on the plug 20 determines the shape of the first plug body 21 and the second plug body 22 after being separated. In other embodiments, the position of the disconnecting part 24 can be set at the region where the bottom wall 222 and the inner side wall of the first plug body 21 meet, as in the second embodiment. In this case, the second plug body 22 comprises the bottom wall 222 connected to the inner side wall of the first plug body 21 and the pipe blocking part 221 extending upwards from the bottom wall 222.

[0047] It is conceivable that the position of the disconnecting part 24 on the plug 20 determines the shape of the first plug body 21 and the second plug body 22 after being separated. In other embodiments, the position of the disconnecting part 24 can be set at the region where the bottom wall 222 and the inner side wall of the first plug body 21 meet, as in the second embodiment. In this case, the second plug body 22 comprises the bottom wall 222 connected to the inner side wall of the first plug body 21 and the pipe blocking part 221 extending upwards from the bottom wall 222.

[0048] like Figures 8-9 As shown, the plug 30 provided in the third embodiment of the present invention includes: a first plug body 31 and a second plug body 32 connected to a second plug body 32. The structure of the first plug body 31 in this embodiment is similar to that of the first plug body 11 in the first embodiment, and will not be described again here. The difference between this embodiment and the first embodiment is that the second plug body 32 is plate-shaped and connected to the inner wall of the first plug body 31, and the thickness of the second plug body 32 is less than the wall thickness of the first plug body 31 at its connection point. The second plug body 32 and the second plug body 32 together form an inner cavity 33.

[0049] The plug 30 in this embodiment does not have the tube plug portion as in the second embodiment, but as... Figure 10 As shown, in this embodiment, the stopper 30 is connected to the end of the tube 150. That is, when the end of the tube 150 is inserted into the inner cavity 33, the stopper 30 can also seal one end of the tube 150, preventing external impurities from entering the tube 150. In actual use, the stopper 30 is first connected to the end of the tube 150. Then, as... Figure 16 As shown, during the manufacturing process of the refrigeration equipment 100, when the tube 150 with the plug 30 passes through the partition plate 140 inside the refrigeration equipment 100, the second plug 32 passes through the through hole 160 located on the partition plate 140. Because the outer diameter of the first part of the first plug 31 is larger than the outer diameter of the second part, it cannot completely pass through the through hole 160. Under the further action of the tube 150, it breaks off from the second plug 32 at the break point. After breaking off, the first plug 31 remains on the partition plate 140, sealing between the through hole 160 through which the tube 150 passes and the tube 150. The second plug 32 falls off after separating from the first plug 31.

[0050] In this embodiment, the second plug 32, after separating from the first plug, does not continue to be connected to the end of the tube 150 as in the first embodiment. Although it is unavoidable that external impurities enter the tube 150 during the manufacturing process of the refrigeration device 100, this eliminates the need for subsequent manual removal of the second plug. In this embodiment, the break is the area where the inner walls of the second plug 32 and the first plug 31 meet, that is, the part where the second plug 32 separates from the first plug 31.

[0051] like Figures 11-13As shown in the drawings, the fourth embodiment of the plug 40 provided by the present application comprises a first plug body 41 and a second plug body 42 connected to the first plug body 41. The structure of the first plug body 41 in this embodiment is similar to that of the first plug body 41 in the first embodiment, and thus is not described here. The difference between this embodiment and the first embodiment is that the first plug body 41 is made of flexible material and can be turned inside out, and the second plug body 42 comprises a connecting portion 422 connected to the inner side wall of the first plug body 41 and a pipe blocking portion 421 located at one side of the connecting portion 422. The connecting portion 422 and the first plug body 41 form an inner cavity 43, and the plug 40 comprises a first state in which the pipe blocking portion 421 is connected to the connecting portion 422 on the side away from the inner cavity 43 (as shown in Figure 12 As shown in the drawings, the fourth embodiment of the plug 40 provided by the present application comprises a first plug body 41 and a second plug body 42 connected to the first plug body 41. The structure of the first plug body 41 in this embodiment is similar to that of the first plug body 41 in the first embodiment, and thus is not described here. The difference between this embodiment and the first embodiment is that the first plug body 41 is made of flexible material and can be turned inside out, and the second plug body 42 comprises a connecting portion 422 connected to the inner side wall of the first plug body 41 and a pipe blocking portion 421 located at one side of the connecting portion 422. The connecting portion 422 and the first plug body 41 form an inner cavity 43, and the plug 40 comprises a first state in which the pipe blocking portion 421 is connected to the connecting portion 422 on the side away from the inner cavity 43 (as shown in Figure 13

[0052] As shown in the drawings, the fourth embodiment of the plug 40 provided by the present application comprises a first plug body 41 and a second plug body 42 connected to the first plug body 41. The structure of the first plug body 41 in this embodiment is similar to that of the first plug body 41 in the first embodiment, and thus is not described here. The difference between this embodiment and the first embodiment is that the first plug body 41 is made of flexible material and can be turned inside out, and the second plug body 42 comprises a connecting portion 422 connected to the inner side wall of the first plug body 41 and a pipe blocking portion 421 located at one side of the connecting portion 422. The connecting portion 422 and the first plug body 41 form an inner cavity 43, and the plug 40 comprises a first state in which the pipe blocking portion 421 is connected to the connecting portion 422 on the side away from the inner cavity 43 (as shown in Figure 14 As shown in the drawings, the fourth embodiment of the plug 40 provided by the present application comprises a first plug body 41 and a second plug body 42 connected to the first plug body 41. The structure of the first plug body 41 in this embodiment is similar to that of the first plug body 41 in the first embodiment, and thus is not described here. The difference between this embodiment and the first embodiment is that the first plug body 41 is made of flexible material and can be turned inside out, and the second plug body 42 comprises a connecting portion 422 connected to the inner side wall of the first plug body 41 and a pipe blocking portion 421 located at one side of the connecting portion 422. The connecting portion 422 and the first plug body 41 form an inner cavity 43, and the plug 40 comprises a first state in which the pipe blocking portion 421 is connected to the connecting portion 422 on the side away from the inner cavity 43 (as shown in Figures 15-16 As shown in the drawings, the fourth embodiment of the plug 40 provided by the present application comprises a first plug body 41 and a second plug body 42 connected to the first plug body 41. The structure of the first plug body 41 in this embodiment is similar to that of the first plug body 41 in the first embodiment, and thus is not described here. The difference between this embodiment and the first embodiment is that the first plug body 41 is made of flexible material and can be turned inside out, and the second plug body 42 comprises a connecting portion 422 connected to the inner side wall of the first plug body 41 and a pipe blocking portion 421 located at one side of the connecting portion 422. The connecting portion 422 and the first plug body 41 form an inner cavity 43, and the plug 40 comprises a first state in which the pipe blocking portion 421 is connected to the connecting portion 422 on the side away from the inner cavity 43 (as shown in

[0053] In the above four embodiments of the present application, the plugs 10, 20, 30, 40 can be made of flexible material such as rubber or silicone to achieve good sealing effect.

[0054] As shown in the drawings, the fourth embodiment of the plug 40 provided by the present application comprises a first plug body 41 and a second plug body 42 connected to the first plug body 41. The structure of the first plug body 41 in this embodiment is similar to that of the first plug body 41 in the first embodiment, and thus is not described here. The difference between this embodiment and the first embodiment is that the first plug body 41 is made of flexible material and can be turned inside out, and the second plug body 42 comprises a connecting portion 422 connected to the inner side wall of the first plug body 41 and a pipe blocking portion 421 located at one side of the connecting portion 422. The connecting portion 422 and the first plug body 41 form an inner cavity 43, and the plug 40 comprises a first state in which the pipe blocking portion 421 is connected to the connecting portion 422 on the side away from the inner cavity 43 (as shown in Figure 4 , 7 , 10, 14, the present application also provides a pipe assembly 170 comprising a pipe body 150 and one of the above-mentioned plugs 10, 20, 30, 40 connected to the end of the pipe body 150 to close the pipe body 150.

[0055] ​In summary, the plug and the pipe assembly provided by the present application seal the pipe body 150 when the pipe body 150 is not installed in the refrigeration device 100, preventing external impurities from entering the pipe body 150 during transportation and storage. During installation of the pipe body 150, the first plug body and the second plug body are separated as the pipe body 150 passes through the partition plate 140, and the first plug body of the plug remains between the through hole 160 on the partition plate 140 and the pipe body 150 to seal, preventing the foaming material from entering the second chamber 130 when the foaming process is performed in the first chamber 120 of the refrigeration device 100.

[0056] After the second plug body is separated from the first plug body, the pipe plug continues to seal the end of the pipe body 150, preventing impurities from entering the pipe body 150 during refrigeration of the refrigeration device 100 and maintaining the pressure in the pipe body 150.

[0057] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0058] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit it, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A plug for a refrigeration appliance, characterized in that, The plug comprises a first plug body in a hollow shape extending in a height direction, and having a first part and a second part located at two sides of the height direction respectively, the first part having an outer diameter larger than that of the second part, and a second plug body connected to the first plug body, the second plug body being located adjacent to the second part and forming an inner cavity together with the first plug body, and a disconnection part being formed between the first plug body and the second plug body. The plug is used to be connected to an end of a pipe body to seal the pipe body, during installation of the pipe body, the first plug body and the second plug body are separated, the first plug body is sealed between a through hole of a partition plate of a refrigeration device and the pipe body, and the second plug body is connected to the end of the pipe body after being separated from the first plug body.

2. The plug of claim 1, wherein The second plug body has a pipe blocking part for sealing the pipe body, the pipe blocking part extending along an axial direction of the plug body.

3. The plug of claim 2, wherein The pipe blocking part is located below the first plug body, and has a hollow tubular part and a sealing part for sealing one end of the tubular part away from the first plug body, and the disconnection part is formed between the pipe blocking part and the first plug body.

4. The plug of claim 2, wherein The second plug body further comprises a bottom wall located below the first plug body, and a peripheral wall extending from an edge of the bottom wall towards the first plug body, the pipe blocking part extending upwards from a side of the bottom wall close to the first plug body, and the disconnection part is formed between the peripheral wall and the first plug body.

5. The plug of claim 2, wherein The first plug body is made of a flexible material, the second plug body further comprises a connecting part connected to an inner side wall of the first plug body, and the plug comprises a first state in which the pipe blocking part is connected to a side of the connecting part away from the inner cavity, and a second state in which the first plug body is flipped inside out from the first state, and the pipe blocking part is located in the inner cavity.

6. A tampon according to any one of claims 1 to 5, characterised in that The disconnection part has a thickness smaller than a wall thickness at a position where the first plug body and / or the second plug body is connected, or a notch is formed at the disconnection part.

7. The tampon of claim 1, wherein The first plug body comprises a sealing part in a conical frustum shape, and a limiting part extending from an outer side wall of the sealing part away from an axial direction of the sealing part, the limiting part being located at one of two ends of the sealing part in the height direction, and the one end having a larger outer diameter.

8. The tampon of claim 1, wherein The plug is made of a flexible material.

9. A pipe assembly, characterized by The plug comprises a pipe body, and a plug as claimed in any one of claims 1 to 8 connected to an end of the pipe body to seal the pipe body.

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