Detachable metal pipe sealing plug

Abstract

The detachable metal pipe sealing plug comprises a columnar plug body used for plugging an end opening of a metal pipe, and the right end of the metal pipe is movably connected with a plugging sleeve in a sleeved mode through an elastic compensation mechanism. The plug on the metal pipe can be quickly mounted or dismounted, the trouble that a special tool is needed for dismounting an existing plug is avoided, the plug is particularly suitable for being used in the scenes such as narrow space or field operation, operation and use of people are greatly facilitated, the plug is very firm after being mounted, and the plug is convenient to disassemble and assemble. Loosening and leakage are not easily caused; and the position of the conical sealing plug can be adjusted in a left-right telescopic mode according to actual needs, so that the conical sealing plug can better plug the plugging sleeve, and therefore the sealing performance is more excellent, dismounting and mounting are convenient, the adaptability is higher, and the use requirements of people are greatly met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe sealing, in particular to a detachable metal pipe sealing plug. BACKGROUND

[0002] Metal pipes are widely used in chemical industry, machinery, construction, energy and other fields due to their high strength, high pressure resistance, corrosion resistance and other characteristics. In order to prevent leakage of the medium in the pipe, a sealing plug is usually used to temporarily or long-term seal the port of the pipe.

[0003] At present, the commonly used metal pipe sealing plugs are mainly divided into two types: non-detachable type and detachable type. The non-detachable type plug is usually fixed to the pipe by welding, riveting or other methods, which can achieve good sealing effect, but the plug or the pipe needs to be damaged when disassembled, and cannot be reused.

[0004] The detachable plug is more widely used due to its reusable feature. The sealing methods of the existing detachable metal pipe sealing plugs mainly include threaded sealing and rubber ring sealing. However, the existing detachable plugs have the following problems: some plugs need to be disassembled and assembled with the help of special tools, which is complicated, especially in narrow space or outdoor operation, which brings great inconvenience to the workers; the locking mechanism of some plugs is not reliable, and it is easy to loosen under the working conditions of vibration and impact, resulting in sealing failure.

[0005] In addition, the sealing member and the main structure of the existing plug are difficult to adjust the position of the sealing joint according to the actual needs, and if the adaptation is not good, it is also easy to cause sealing failure.

[0006] Therefore, it is a technical problem to be solved in the field to develop a detachable metal pipe sealing plug with excellent sealing performance, convenient disassembly and assembly, and strong adaptability. SUMMARY

[0007] Based on the technical problems existing in the background art, the present application provides a detachable metal pipe sealing plug.

[0008] The detachable metal pipe sealing plug provided by the present application comprises a cylindrical plug body for plugging the port of a metal pipe, an elastic compensation mechanism is used to movably sleeve a plugging sleeve at the right end of the metal pipe, and the left end of the plugging sleeve is movably sleeved in the metal pipe along the axial force direction; a conical sealing plug is movably connected to the left end of the cylindrical plug body, and the conical part of the conical sealing plug is in sealing cooperation with the port of the plugging sleeve.

[0009] The outer wall of the cylindrical plug body is provided with a first outer thread, and a threaded locking sleeve is threadedly connected to the cylindrical plug body through the first outer thread.

[0010] The right end surface of the metal pipe is fixedly provided with an O-shaped elastic sealing ring, and the sealing sleeve sealing slidingly penetrates the O-shaped elastic sealing ring; the left end surface of the cylindrical plug body abuts against the right end surface of the O-shaped elastic sealing ring in sealing cooperation.

[0011] The cylindrical plug body is provided with an extension adjustment mechanism, and the cylindrical plug body is connected to the conical sealing plug through the extension adjustment mechanism.

[0012] Preferably, the elastic compensation mechanism comprises an annular sliding groove arranged on the inner wall of the metal pipe, and a sealing sliding ring is sealingly and slidingly connected in the annular sliding groove; a limiting ring is fixedly sleeved in the annular sliding groove on the left side of the sealing sliding ring, and an elastic compensation spring is fixedly connected between the limiting ring and the left end surface of the sealing sliding ring.

[0013] Preferably, a sealing sleeve ring is fixedly sleeved on the circumference of the sealing sliding ring, and the sealing sliding ring is sealingly and slidingly connected with the inner wall of the annular sliding groove through the sealing sleeve ring.

[0014] Preferably, the extension adjustment mechanism comprises an extension adjustment groove arranged on the left end of the cylindrical plug body, a connecting column is sealingly and slidingly sleeved in the extension adjustment groove in the horizontal direction, the left end of the connecting column is movably extended to the outside of the extension adjustment groove and fixedly connected with the conical sealing plug; a threaded connection groove is arranged on the right end of the connecting column, a threaded connecting rod is threadedly connected to the right end of the connecting column through the threaded connection groove, a nut head is fixedly connected to the right end of the cylindrical plug body, and an adjustment knob is fixedly connected to the right end of the threaded connecting rod which is movably penetrated to the right outside of the nut head.

[0015] Preferably, a plurality of guide grooves are arranged on the right end of the connecting column, a plurality of guide rods are fixedly connected to the right inner wall of the extension adjustment groove, and the connecting column is slidingly sleeved on the guide rods in the horizontal direction through the guide grooves.

[0016] Preferably, a fixing ring is fixedly sleeved on the guide rod, and a telescopic spring is fixedly and sleeved on the guide rod between the fixing ring and the right end of the connecting column.

[0017] Preferably, the plurality of guide rods are arranged in a central annular uniform manner based on the threaded connecting rod; and the plurality of guide grooves are arranged in a central annular uniform manner based on the threaded connection groove.

[0018] Preferably, the inner wall of the right side of the telescopic adjustment groove is provided with an installation hole, a bearing is provided in the installation hole, and the threaded connecting rod is rotatably installed on the bearing; the nut head is provided with a rotating hole, and the threaded connecting rod rotatably passes through the rotating hole; the outer surface of the threaded locking sleeve is also provided with multiple anti-slip strips.

[0019] The beneficial effects of this invention are:

[0020] 1. In this invention, by inserting the conical sealing plug into the opening of the sealing sleeve and pressing it to the left, the conical sealing plug can press and seal the opening of the sealing sleeve. At the same time, by rotating the threaded locking sleeve, the threaded locking sleeve can lock the cylindrical plug body and the metal pipe together under the threaded connection of the first external thread and the second external thread. At the same time, the left end face of the cylindrical plug body can press and seal against the O-ring on the right end of the metal pipe, so as to ensure that the end of the metal pipe is further sealed. The structure is simple and easy to install.

[0021] 2. In this invention, during the process of the conical sealing plug sealing the opening of the sealing sleeve, it also causes the sealing sleeve and the sealing sliding ring to move to the left and compress and deform the elastic compensation spring. In this way, after the sealing sleeve is sealed, the elastic compensation spring will generate an elastic compensation effect to ensure that the conical sealing plug seals the sealing sleeve more tightly, resulting in a better sealing effect. This can prevent the plug from easily loosening and causing sealing failure under conditions such as vibration and impact.

[0022] 3. In this invention, when it is necessary to disassemble the plug on the metal pipe, it is only necessary to rotate the threaded locking sleeve in the opposite direction with the first external thread and the second external thread. This allows for quick disassembly and separation of the metal pipe from the columnar plug body and the conical sealing plug.

[0023] 4. In this invention, by adjusting the knob to rotate the threaded connecting rod, the connecting column is driven to move left or right through the threaded groove on the threaded connecting rod. When the connecting column moves, it drives the conical sealing plug to extend and retract left and right. At the same time, after adjustment, the telescopic spring will also produce a reaction force after compression or stretching deformation. In this way, under the reverse action of the telescopic spring, the threaded connection between the threaded groove on the connecting column and the threaded connecting rod can be made tighter, and it is not easy for the threads to loosen. This ensures that the position of the conical sealing plug is more stable after adjustment, resulting in better sealing effect. At the same time, the position of the sealing plug can be adjusted according to actual needs, avoiding the situation that easily causes sealing failure due to poor fit in the past.

[0024] In summary, this detachable metal pipe sealing plug, when the conical sealing plug is screwed into the pipe, causes the sealing sleeve to contract radially under axial force, compressing the elastic compensation mechanism and forming an interference fit with the inner wall of the sleeve. The greater the pressure, the tighter the seal. This not only allows for quick installation or removal of the plug on the metal pipe, avoiding the inconvenience of using special tools for disassembly and assembly of existing plugs, but is also particularly suitable for use in confined spaces or field operations, greatly facilitating operation. Furthermore, the installation is very secure and not prone to loosening or leakage. Moreover, the position of the conical sealing plug can be adjusted left and right according to actual needs, allowing for better sealing of the sealing sleeve. This results in superior sealing performance, convenient installation and disassembly, and stronger adaptability, greatly meeting user needs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a detachable metal pipe sealing plug proposed in this invention;

[0026] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure between the metal pipe and the sealing sleeve in this invention;

[0028] Figure 4 This is a schematic diagram of the structure between the cylindrical plug body and the conical sealing plug in this invention;

[0029] Figure 5 This is a schematic diagram showing the state of the metal pipe, columnar plug body, and conical sealing plug of the present invention when they are relatively separated.

[0030] In the diagram: 1. Metal pipe; 100. Second external thread; 101. Sealing sleeve; 102. O-ring; 103. Sealing sliding ring; 104. Elastic compensating spring; 105. Limiting ring; 106. Annular sliding groove; 107. Sealing ring; 2. Columnar plug body; 200. First external thread; 201. Telescopic adjustment groove; 3. Connecting column; 301. Conical sealing plug; 302. Threaded connection groove; 303. Guide groove; 4. Threaded locking sleeve; 400. Anti-slip strip; 5. Nut head; 501. Rotating hole; 6. Adjusting knob; 7. Threaded connecting rod; 8. Bearing; 9. Guide rod; 10. Telescopic spring; 11. Fixing ring. Detailed Implementation

[0031] The present invention will be further explained below with reference to specific embodiments.

[0032] Example

[0033] refer to Figures 1-5This embodiment proposes a detachable metal pipe sealing plug, including a columnar plug body 2 for sealing the port of a metal pipe 1. The right end of the metal pipe 1 is movably sleeved with a sealing sleeve 101 through an elastic compensation mechanism, and the left end of the sealing sleeve 101 is slidably sleeved inside the metal pipe 1 along the axial force path. The left end of the columnar plug body 2 is movably connected with a conical sealing plug 301, and the conical part of the conical sealing plug 301 abuts against the port of the sealing sleeve 101 for sealing cooperation.

[0034] like Figures 1-2 In the middle, a first external thread 200 is provided on the outer circumference of the columnar plug body 2, and a threaded locking sleeve 4 is threadedly connected to the columnar plug body 2 through the first external thread 200. A second external thread 100 is provided on the outer circumference of the right end of the metal pipe 1, and the threaded locking sleeve 4 is also threadedly locked to the second external thread 100 on the metal pipe 1.

[0035] like Figures 1-2 In the middle, an O-ring elastic sealing ring 102 is fixedly installed on the right end face of the metal pipe 1, and the sealing sleeve 101 slides through the O-ring elastic sealing ring 102 for sealing; the left end face of the columnar plug body 2 abuts and seals with the right end face of the O-ring elastic sealing ring 102; the columnar plug body 2 is provided with a telescopic adjustment mechanism, and the columnar plug body 2 is connected to the conical sealing plug 301 through the telescopic adjustment mechanism.

[0036] like Figures 2-3 The elastic compensation mechanism includes an annular sliding groove 106 on the inner wall of the metal pipe 1. A sealing sliding ring 103 is slidably connected within the annular sliding groove 106, and the sealing sliding ring 103 is fixedly connected to the left end of the sealing sleeve 101. A limiting ring 105 is fixedly sleeved within the annular sliding groove 106 to the left of the sealing sliding ring 103, and an elastic compensation spring 104 is fixedly connected between the limiting ring 105 and the left end face of the sealing sliding ring 103. A sealing collar 107 is fixedly sleeved on the circumference of the sealing sliding ring 103, and the sealing sliding ring 103 is slidably connected to the inner wall of the annular sliding groove 106 in a horizontal direction through the sealing collar 107.

[0037] like Figure 2 , 4The telescopic adjustment mechanism includes a telescopic adjustment groove 201 located at the left end of the cylindrical plug body 2. A connecting post 3 is horizontally and slidably fitted inside the telescopic adjustment groove 201. The left end of the connecting post 3 extends movably to the outside of the telescopic adjustment groove 201 and is fixedly connected to the conical sealing plug 301. The right end of the connecting post 3 has a threaded connecting groove 302, through which a threaded connecting rod 7 is threadedly connected. A nut head 5 is fixedly connected to the right end of the cylindrical plug body 2. The right end of the threaded connecting rod 7 extends movably through to the right outside of the nut head 5 and is fixedly connected to an adjustment knob 6. The right end of the connecting post 3 has multiple guide grooves 303, and multiple guide rods 9 are fixedly connected to the right inner wall of the telescopic adjustment groove 201. The connecting post 3 slides horizontally on the guide rods 9 through the guide grooves 303.

[0038] like Figure 4 In the middle, a fixing ring 11 is fixedly sleeved on the guide rod 9, and a telescopic spring 10 sleeved on the guide rod 9 is fixedly connected between the fixing ring 11 and the right end of the connecting column 3; multiple guide rods 9 are evenly arranged in a ring around the threaded connecting rod 7; multiple guide grooves 303 are evenly arranged in a ring around the threaded connecting groove 302.

[0039] The telescopic adjustment groove 201 has an installation hole on the right inner wall, and a bearing 8 is installed in the installation hole. The threaded connecting rod 7 is rotatably installed on the bearing 8. The nut head 5 has a rotating hole 501, and the threaded connecting rod 7 rotatably passes through the rotating hole 501. The outer surface of the threaded locking sleeve 4 is also provided with multiple anti-slip strips 400.

[0040] See Figures 1-5As shown, this detachable metal pipe sealing plug facilitates installation or removal when sealing the end opening of the metal pipe 1. When installation is required, the conical sealing plug 301 at the left end of the cylindrical plug body 2 is inserted into the opening of the sealing sleeve 101 and pressed to the left, thereby causing the conical sealing plug 301 to press against and seal the opening of the sealing sleeve 101. At the same time, by rotating the threaded locking sleeve 4, the threaded locking sleeve 4 can be moved along the first external thread on the cylindrical plug body 2. 200 moves to the left in a spiral threaded motion, and the threaded locking sleeve 4 is threadedly connected to the second external thread 100. This allows the threaded locking sleeve 4 to lock the columnar plug body 2 and the metal pipe 1 together under the threaded connection of the first external thread 200 and the second external thread 100. At the same time, it also causes the left end face of the columnar plug body 2 to come into contact with the O-ring elastic sealing ring 102 on the right end of the metal pipe 1 to seal, so as to ensure that the end of the metal pipe 1 is further sealed. Furthermore, during the process of the conical sealing plug 301 contacting and sealing the opening of the sealing sleeve 101, it also causes the sealing sleeve 101 and the sealing sliding ring 103 to move to the left and compress and deform the elastic compensation spring 104. In this way, after the sealing sleeve 101 is sealed, the elastic compensation spring 104 will generate elastic compensation to ensure that the conical sealing plug 301 seals the sealing sleeve 101 more tightly, resulting in a better sealing effect. This can prevent the plug from easily loosening and causing sealing failure under conditions such as vibration and impact.

[0041] Similarly, conversely, when it is necessary to disassemble the plug on the metal pipe 1, it is only necessary to rotate the threaded locking sleeve 4 in the opposite direction with the first external thread 200 and the second external thread 100. This allows for quick disassembly and separation of the metal pipe 1 from the cylindrical plug body 2 and the conical sealing plug 301 (e.g., Figure 5 (As shown in the diagram). Ultimately, this invention enables the rapid installation or removal of plugs on metal pipes 1, avoiding the inconvenience of requiring special tools for installation and removal of existing plugs. It is particularly suitable for use in confined spaces or field operations, greatly facilitating operation and use. Furthermore, the installed plugs are very secure and not prone to loosening or leakage.

[0042] As a further implementation, the position of the conical sealing plug 301 can be adjusted left and right according to actual needs during use, so that the conical sealing plug 301 can better seal the sealing sleeve 101. That is, during adjustment: by adjusting the knob 6 to rotate the threaded connecting rod 7, the connecting column 3 is driven to the left or right by the threaded connecting groove 302 on the threaded connecting rod 7. When the connecting column 3 moves, it drives the conical sealing plug 301 to adjust left and right. At the same time, after adjustment, the telescopic spring 10 will also produce a reaction force after compression or stretching deformation. In this way, under the reverse action of the telescopic spring 10, the threaded connection between the threaded connecting groove 302 on the connecting column 3 and the threaded connecting rod 7 can be made tighter, and it is not easy for the threads to loosen. This ensures that the position of the conical sealing plug 301 is more stable after adjustment, resulting in better subsequent sealing effect. At the same time, the position of the sealing plug (such as the position of the conical sealing plug 301) can be adjusted according to actual needs, avoiding the previous situation where poor fit easily caused sealing failure. Ultimately, this invention achieves superior sealing performance, convenient assembly and disassembly, and enhanced adaptability, greatly satisfying people's usage needs.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A removable metal pipe sealing plug, comprising a cylindrical plug body (2) for sealing the port of a metal pipe (1), characterized in that, The right end of the metal pipe (1) is movably sleeved with a sealing sleeve (101) through an elastic compensation mechanism, and the left end of the sealing sleeve (101) is slidably sleeved in the metal pipe (1) along the axial force path; the left end of the columnar plug body (2) is movably connected with a conical sealing plug (301), and the conical part of the conical sealing plug (301) abuts against the port of the sealing sleeve (101) for sealing cooperation; The cylindrical plug body (2) has a first external thread (200) on its outer circumference. The cylindrical plug body (2) is connected to a threaded locking sleeve (4) through the first external thread (200). The metal pipe (1) has a second external thread (100) on its outer circumference at the right end. The threaded locking sleeve (4) is also threadedly locked to the second external thread (100) on the metal pipe (1). An O-ring (102) is fixedly provided on the right end face of the metal pipe (1), and the sealing sleeve (101) slides through the O-ring (102) for sealing; the left end face of the columnar plug body (2) abuts against the right end face of the O-ring (102) for sealing. The columnar plug body (2) is provided with a telescopic adjustment mechanism, and the columnar plug body (2) is connected to the conical sealing plug (301) through the telescopic adjustment mechanism.

2. The detachable metal pipe sealing plug according to claim 1, characterized in that, The elastic compensation mechanism includes an annular sliding groove (106) on the inner wall of the metal pipe (1), a sealing sliding ring (103) is slidably connected in the annular sliding groove (106), and the sealing sliding ring (103) is fixedly connected to the left end of the sealing sleeve (101); a limiting ring (105) is fixedly sleeved in the annular sliding groove (106) located to the left of the sealing sliding ring (103), and an elastic compensation spring (104) is fixedly connected between the limiting ring (105) and the left end face of the sealing sliding ring (103).

3. A detachable metal pipe sealing plug according to claim 2, characterized in that, A sealing ring (107) is fixedly sleeved on the circumference of the sealing sliding ring (103), and the sealing sliding ring (103) is horizontally and slidably connected to the inner wall of the annular sliding groove (106) through the sealing ring (107).

4. A detachable metal pipe sealing plug according to claim 1, characterized in that, The telescopic adjustment mechanism includes a telescopic adjustment groove (201) located at the left end of the columnar plug body (2). A connecting column (3) is slidably and sealingly fitted in the telescopic adjustment groove (201) along the horizontal direction. The left end of the connecting column (3) extends movably to the outside of the telescopic adjustment groove (201) and is fixedly connected to the conical sealing plug (301). The right end of the connecting column (3) is provided with a threaded connecting groove (302). The right end of the connecting column (3) is threadedly connected to a threaded connecting rod (7) through the threaded connecting groove (302). The right end of the columnar plug body (2) is fixedly connected to a nut head (5). The right end of the threaded connecting rod (7) extends movably through to the right outside of the nut head (5) and is fixedly connected to an adjustment knob (6).

5. A detachable metal pipe sealing plug according to claim 4, characterized in that, The right end of the connecting column (3) is provided with multiple guide grooves (303), and multiple guide rods (9) are fixedly connected to the inner wall of the right side of the telescopic adjustment groove (201). The connecting column (3) is slidably sleeved on the guide rods (9) in the horizontal direction through the guide grooves (303).

6. A detachable metal pipe sealing plug according to claim 5, characterized in that, A fixing ring (11) is fixedly sleeved on the guide rod (9), and a telescopic spring (10) sleeved on the guide rod (9) is fixedly connected between the fixing ring (11) and the right end of the connecting column (3).

7. A detachable metal pipe sealing plug according to claim 4, characterized in that, Multiple guide rods (9) are evenly arranged in a ring around the threaded connecting rod (7); multiple guide grooves (303) are evenly arranged in a ring around the threaded connecting groove (302).

8. A detachable metal pipe sealing plug according to claim 4, characterized in that, The telescopic adjustment groove (201) has an installation hole on the right inner wall, and a bearing (8) is installed in the installation hole. The threaded connecting rod (7) is rotatably installed on the bearing (8). The nut head (5) has a rotating hole (501), and the threaded connecting rod (7) rotatably passes through the rotating hole (501).

9. A detachable metal pipe sealing plug according to claim 1, characterized in that, The outer surface of the threaded locking sleeve (4) is also provided with multiple anti-slip strips (400).

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