Pipeline butt joint structure

Abstract

The invention discloses a pipeline butt joint structure which comprises a connecting pipe used for being connected between a pair of pipelines to be connected. The two sealing rings are arranged at the joints of the to-be-connected pipeline and the pair of connecting pipes in a sleeving manner respectively; and the two limiting rings are detachably hooped on the peripheries of the two sealing rings respectively. According to the leakage-proof structure at the pipeline connecting position, the connecting pipe is arranged between the two to-be-connected pipes, the sealing ring and the limiting ring are additionally arranged at the connecting position, and the leakage-proof performance of the pipeline connecting position is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline repair, and particularly to a pipeline docking structure. Background Art

[0002] A drainage pipeline refers to a system composed of pipes and their ancillary facilities for collecting and discharging sewage, wastewater and rainwater, including main pipes, branch pipes and pipes leading to a treatment plant. Whether built on a street or anywhere else, as long as it serves the purpose of drainage, it should be counted as a drainage pipeline. In traditional pipeline installation, a sealing ring is usually first installed at one end of a section of pipeline, and then another section of pipeline is inserted into the pipeline with the installed sealing ring, and only sealed by the sealing ring. The leak-proof structure is relatively single, resulting in a greater possibility of leakage. Summary of the Invention

[0003] By providing a pipeline docking structure, the present invention sets a connecting pipe between two pipes to be connected, and adds a sealing ring and a limiting ring at the connection, further improving the leak-proof performance of the pipeline connection.

[0004] A pipeline docking structure of the present invention includes: a connecting pipe for connecting between a pair of pipes to be connected; two sealing rings respectively sleeved at the connection of the pipes to be connected and a pair of the connecting pipes; and two limiting rings respectively detachably clamped on the outer circumferences of the two sealing rings.

[0005] A further improvement of the present invention is that the limiting ring is formed by buckling a first semi-circular ring and a second semi-circular ring. Each of the two buckling ends of the first semi-circular ring is provided with a first connecting plate extending radially outward along the limiting ring, and each of the two buckling ends of the second semi-circular ring is provided with a second connecting plate extending radially outward along the limiting ring. The two first connecting plates are respectively connected to the two second connecting plates through connecting members to realize the buckling connection of the first semi-circular ring and the second semi-circular ring.

[0006] A further improvement of the present invention is that the connecting member includes: at least one inserting rod vertically connected to the corresponding first connecting plate, and an elastic member connected to the end of the inserting rod away from the first connecting plate and capable of stretching along a direction perpendicular to the inserting rod; and a first socket formed on the corresponding second connecting plate for the inserting rod to penetrate through. Wherein, the elastic member can jointly penetrate through the first socket with the inserting rod in a contracted state, and the elastic member can block outside the first socket in a reset state.

[0007] A further improvement of the present invention is that a guiding surface facing the first socket is formed at the end of the elastic member away from the inserting rod.

[0008] A further improvement of the present invention lies in that the connecting member further includes: two insertion plates, which are respectively and vertically connected to two first connecting plates of the first semi-circular ring, and at least one side surface of each insertion plate is covered with a sealing gasket; two second sockets for respectively inserting the two insertion plates, and the two second sockets are respectively formed on two second connecting plates of the second semi-circular ring.

[0009] A further improvement of the present invention lies in that two first flanges are movably sleeved on the connecting pipe, and two second flanges are respectively movably sleeved on a pair of pipes to be butt-jointed. In a state where the connecting pipe is butted between a pair of pipes to be butt-jointed, by respectively moving the two first flanges to two ends of the connecting pipe and respectively butt-jointing and connecting them with the two second flanges that move to the butt-joint ends of the corresponding pipes to be butt-jointed, two flange pairs that respectively block the connection between the connecting pipe and a pair of pipes to be butt-jointed are formed, and the two sealing rings are respectively sleeved on the outer circumferences of the two flange pairs.

[0010] A further improvement of the present invention lies in that: a pair of first flange sleeves are externally screwed to the connecting pipe, and the two first flanges are respectively fixedly sleeved on the relative outer ends of the pair of first flange sleeves; a pair of second flange sleeves are externally screwed to a pair of pipes to be connected, and the two second flanges are respectively fixedly sleeved on the relative inner ends of the pair of second flange sleeves.

[0011] A further improvement of the present invention lies in that interface sections are formed at both ends of the connecting pipe and extend axially and relatively outward, and the two interface sections are respectively used for inserting and screwing into a pair of pipes to be butt-jointed.

[0012] A further improvement of the present invention lies in that butt-joint ends of a pair of pipes to be butt-jointed extend axially and outward to form receiving sections. A pair of first flange sleeves respectively include a small-diameter section at the relative inner end and a large-diameter section at the relative outer end. The small-diameter section is screwed to the connecting pipe, and a receiving groove for inserting the corresponding receiving section is formed between the large-diameter section and the connecting pipe, and the two first flanges are respectively fixed to the relative outer ends of the two large-diameter sections.

[0013] The present invention provides a leak-proof structure at the pipe connection. The first flange and the second flange connect the connecting pipe and the pipe to be connected. By adding a sealing ring and a limiting ring outside the mutually connected first flange and second flange, the leak-proof performance at the pipe connection is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall split structure of the present invention;

[0015] Figure 2 is a schematic diagram of the structure after installation of the present invention;

[0016] Figure 3 Structural schematic diagram of the present invention without the installation of a sealing sleeve;

[0017] Figure 4 Exploded structural schematic diagram of the present invention without the installation of a sealing sleeve;

[0018] Figure 5 Structural schematic diagram of the limiting ring of the present invention;

[0019] Figure 6 Structural schematic diagram of the insertion rod part of the limiting ring of the present invention.

[0020] In the figure: 1, connecting pipe; 2, first flange sleeve; 3, first flange; 4, second flange; 5, second flange sleeve; 6, pipeline to be connected; 7, receiving section; 8, sealing ring; 9, limiting ring; 91, first semi-circular ring; 92, second semi-circular ring; 10, insertion rod; 101, first socket; 11, elastic member; 12, slope-shaped block; 13, insertion plate; 14, sealing gasket; 15, third internal thread; 16, receiving groove; 171, first external thread section; 172, second external thread section; 173, third external thread. Detailed implementation manner

[0021] The present invention provides a pipeline docking structure. The first flange and the second flange connect the connecting pipe and the pipeline to be connected. By adding a sealing ring and a limiting ring outside the mutually connected first flange and second flange, the leak-proof performance at the pipeline connection is further improved.

[0022] As Figures 1 to 6 shown, a pipeline docking structure includes: a connecting pipe 1 for connecting between a pair of pipelines 6 to be connected; two sealing rings 8 respectively sleeved at the connection of the pipeline 6 to be connected and a pair of connecting pipes 1; two limiting rings 9 respectively detachably clamped on the outer circumferences of the two sealing rings 8.

[0023] As Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 shown, the limiting ring 9 is formed by buckling a first semi-circular ring 91 and a second semi-circular ring 92. Each of the two buckling ends of the first semi-circular ring 91 is provided with a first connecting plate extending radially outward along the limiting ring 9, and each of the two buckling ends of the second semi-circular ring 92 is provided with a second connecting plate extending radially outward along the limiting ring 9. The two first connecting plates are respectively connected to the two second connecting plates through connecting members to realize the buckling connection of the first semi-circular ring 91 and the second semi-circular ring 92.

[0024] As Figure 5 、 Figure 6As shown, the connecting member further includes at least one inserting rod 10 vertically connected to the corresponding first connecting plate. One end of the inserting rod 10 away from the first connecting plate is connected with an elastic member 11 that can expand and contract along a direction perpendicular to the inserting rod 10; a first socket 101 is formed on the corresponding second connecting plate for the inserting rod 10 to penetrate through. Among them, in the contracted state, the elastic member 11 and the inserting rod 10 can jointly penetrate through the first socket 101, and in the reset state, the elastic member 11 can be blocked outside the first socket 101.

[0025] In this embodiment, the elastic member 11 is a return spring.

[0026] As Figure 5 、 Figure 6 shown, a guiding surface facing the first socket 101 is formed at the end of the elastic member 11 away from the inserting rod 10.

[0027] As Figure 5 、 Figure 6 shown, in this embodiment, a slope-shaped block 12 for limiting the inserting rod 10 after the inserting rod 10 is inserted into the first socket 101 is provided at the end of the elastic member 11. The slope surface of the slope-shaped block 12 is the guiding surface. During the process of the slope-shaped block 12 following the inserting rod 10 being inserted into the first socket 101, the guiding surface contacts the edge of the first socket 101, and the elastic member 11 is compressed; after passing through the first socket 101, the slope-shaped block 12 pops out in the reset state of the elastic member 11 and is blocked on the other side of the second connecting plate.

[0028] Preferably, in this embodiment, grooves are formed on the inner sides of both the first semi-circular ring 91 and the second semi-circular ring 92. The sealing ring 8 is also divided into two semi-circles, one is fixed in the groove on the inner side of the first semi-circular ring 91, and the other is fixed in the groove on the inner side of the second semi-circular ring 92.

[0029] Preferably, in this embodiment, as Figure 5 、 Figure 6 shown, three inserting rods 10 are provided on each of the two first connecting plates, and three first sockets 101 adapted thereto are provided on each second connecting plate.

[0030] As Figure 5 、 Figure 6 shown, the connecting member further includes: two inserting plates 13, which are respectively vertically connected to the two first connecting plates of the first semi-circular ring 91. At least one side surface of each inserting plate 13 is covered with a sealing gasket 14; two second sockets for inserting the two inserting plates 13 respectively are provided on the two second connecting plates of the second semi-circular ring 92. By providing the sealing gasket 14, the connection strength between the first semi-circular ring 91 and the second semi-circular ring 92 is further enhanced to improve the sealing degree at the pipe connection.

[0031] As Figures 1 to 4As shown, two first flanges 3 are movably sleeved on the connecting pipe 1, and two second flanges 4 are respectively movably sleeved on a pair of pipes 6 to be butt-jointed. In the state where the connecting pipe 1 is butt-jointed between the pair of pipes 6 to be butt-jointed, by moving the two first flanges 3 to the two ends of the connecting pipe 1 respectively and butt-jointing and connecting them with the two second flanges 4 that have moved to the butt-joint ends of the corresponding pipes 6 to be butt-jointed, two flange pairs that respectively block the joints between the connecting pipe 1 and the pair of pipes 6 to be butt-jointed are formed, and two sealing rings 8 are respectively sleeved on the outer circumferences of the two flange pairs.

[0032] As Figure 1 , Figure 4 shown, a pair of first flange sleeves 2 are externally screwed to the outside of the connecting pipe 1, and the two first flanges 3 are respectively fixedly sleeved on the opposite outer ends of the pair of first flange sleeves 2; a pair of second flange sleeves 5 are externally screwed to the outside of a pair of pipes 6 to be connected, and the two second flanges 4 are respectively fixedly sleeved on the opposite inner ends of the pair of second flange sleeves 5. By providing the first flange sleeves 2 and the second flange sleeves 5, the movement and detachable connection of the first flange 3 and the second flange 4 are realized.

[0033] In this embodiment, as Figure 1 , Figure 4 shown, it further includes a pair of first external thread segments 171 opened at both ends of the outer surface of the connecting pipe 1; first internal threads adapted to the first external thread segments 171 are respectively opened on the inner walls of the pair of first flange sleeves 2; second external thread segments 172 opened on the outer surface of the connection segments of the pair of pipes 6 to be connected; second internal threads adapted to the second external thread segments 172 are respectively opened on the inner walls of the pair of second flange sleeves 5.

[0034] In this embodiment, when the first flange sleeve 2 and the second flange sleeve 5 rotate along the threads and come into contact with each other, it is necessary to ensure that the connection holes on the first flange sleeve 2 and the connection holes on the second flange sleeve 5 can be aligned to ensure the connection of the first flange sleeve 2 and the second flange sleeve 5.

[0035] As Figure 1 , Figure 4 shown, interface segments are formed by the two ends of the connecting pipe 1 extending relatively outward along the axial direction, and the two interface segments are respectively used for being inserted and externally screwed into a pair of pipes 6 to be butt-jointed.

[0036] In this embodiment, as Figure 1 , Figure 4 shown, the outer walls of the interface segments are fixedly attached to the inner walls of the connecting pipe 1, third external threads 173 are formed on the outer surfaces of the interface segments, the inner diameters of the pair of pipes 6 to be connected are adapted to the outer diameters of the interface segments and third internal threads 15 adapted to the third external threads 173 are opened on the inner walls.

[0037] By setting an interface section and screwing the interface section to the pipeline 6 to be connected, compared with direct butt-joint, the use of threaded connection can make the connection between the pipeline 6 to be connected and the connecting pipe 1 closer.

[0038] As Figure 1 shown, the butt-joint ends of a pair of pipelines 6 to be butt-jointed extend axially outwards to form a receiving section 7. A pair of first flange sleeves 2 respectively include a small-diameter section at the relatively inner end and a large-diameter section at the relatively outer end. The small-diameter section is screwed to the connecting pipe 1, and a receiving groove 16 for the receiving section 7 to be inserted is formed between the large-diameter section and the connecting pipe 1. Two first flanges 3 are respectively fixed to the relatively outer ends of the two large-diameter sections.

[0039] In this embodiment, as Figure 1 shown, the receiving section 7 is a fixed sleeve, and the fixed sleeve is a reducing sleeve with a diameter gradually increasing from small to large along the extending direction. The maximum diameter of the reducing sleeve is adapted to the inner diameter of the large-diameter section to make up for the radial gap of the receiving groove 16 and prevent leakage.

[0040] When the present invention is in use, the connecting pipe 1 is connected between two pipelines 6 to be connected, and the two pipelines 6 to be connected are communicated with both ends of the connecting pipe 1 through the butt-joint between the first flange 3 and the second flange 4. A sealing ring 8 and a limiting ring 9 are sleeved outside the connected first flange 3 and second flange 4 to further improve the sealing degree of the connection part and prevent water from leaking out from the connection node between the connecting pipe 1 and the pipeline 6 to be connected. When installing the limiting ring 9, the insertion plate 10 at the end of the first semi-circular ring 91 is inserted into the first socket 101 on the second semi-circular ring 92. The slope of the slope-shaped block 10 on the insertion plate 10 contacts the edge of the first socket 101 to drive the return spring 11 to compress. When the insertion rod 10 extends into the first socket 101, the slope-shaped block 12 is disengaged from the edge of the first socket 101, and the elastic member 11 resets. The slope-shaped block 12 blocks the other side of the first socket to lock the first semi-circular ring 91 and the second semi-circular ring 92. When it is necessary to disassemble the limiting ring 9, only need to manually press down the slope-shaped block 12 to compress the elastic member 11, and while keeping pressing, manually separate the first semi-circular ring 91 and the second semi-circular ring 92, then the disassembly of the limiting ring 9 can be realized.

[0041] Finally, it should be noted that: the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline docking structure, characterized in that, Comprising: A connecting pipe for connecting between a pair of pipes to be connected; two sealing rings respectively sleeved at the joints between the pipes to be connected and a pair of the connecting pipes; Two limiting rings respectively detachably clamped on the outer peripheries of the two sealing rings.

2. The pipe docking structure according to claim 1, characterized in that, The limiting ring is formed by buckling a first semi-circular ring and a second semi-circular ring. Each of the two buckling ends of the first semi-circular ring is provided with a first connecting plate extending radially outward along the limiting ring. Each of the two buckling ends of the second semi-circular ring is provided with a second connecting plate extending radially outward along the limiting ring. The two first connecting plates are respectively connected to the two second connecting plates through connecting pieces to realize the buckling connection between the first semi-circular ring and the second semi-circular ring.

3. The pipe docking structure according to claim 2, characterized in that, The connecting piece includes: at least one inserting rod vertically connected to the corresponding first connecting plate. One end of the inserting rod far from the first connecting plate is connected with an elastic member that can expand and contract along a direction perpendicular to the inserting rod; a first socket opened on the corresponding second connecting plate for the inserting rod to penetrate through; wherein, the elastic member and the inserting rod can jointly penetrate through the first socket in a contracted state, and the elastic member can block outside the first socket in a reset state.

4. The pipe docking structure according to claim 3, characterized in that A guiding surface facing the first socket is formed at the end of the elastic member far from the inserting rod.

5. The pipeline docking structure according to claim 2, characterized in that The connecting piece further includes: two inserting plates respectively vertically connected to the two first connecting plates of the first semi-circular ring. At least one side surface of each inserting plate is covered with a sealing gasket; two second sockets respectively for inserting the two inserting plates, and the two second sockets are respectively opened on the two second connecting plates of the second semi-circular ring.

6. The pipe docking structure according to claim 1, wherein, Two first flanges are movably sleeved on the connecting pipe, and two second flanges are respectively movably sleeved on the pair of pipes to be butted. In a state where the connecting pipe is butted between a pair of pipes to be butted, by moving the two first flanges to the two ends of the connecting pipe respectively and respectively butting and connecting with the two second flanges moving to the butting ends of the corresponding pipes to be butted, two flange pairs for blocking the joints between the connecting pipe and a pair of pipes to be butted are respectively formed, and the two sealing rings are respectively sleeved on the outer peripheries of the two flange pairs.

7. The pipe docking structure according to claim 6, characterized in that: A pair of first flange sleeves are screwed on the outer side of the connecting pipe, and the two first flanges are respectively fixedly sleeved on the opposite outer ends of the pair of first flange sleeves; a pair of second flange sleeves are screwed on the outer side of the pair of pipes to be connected, and the two second flanges are respectively fixedly sleeved on the opposite inner ends of the pair of second flange sleeves.

8. The pipeline docking structure according to claim 6, characterized in that, Interface sections are formed by the two ends of the connecting pipe extending relatively outward along the axial direction. The two interface sections are used for respectively inserting and screwing into a pair of pipes to be butted.

9. The pipe butt joint structure according to claim 7, characterized in that The butting ends of a pair of pipes to be butted extend outward along the axial direction to form receiving sections. Each of the pair of first flange sleeves includes a small-diameter section at the relative inner end and a large-diameter section at the relative outer end. The small-diameter section is screwed on the connecting pipe, and a receiving groove for inserting the corresponding receiving section is formed between the large-diameter section and the connecting pipe. The two first flanges are respectively fixed to the opposite outer ends of the two large-diameter sections.

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