A pipe connection device

Abstract

The present invention proposes a pipeline connection device with a simple structure and convenient for pipeline installation and connection, comprising a bell-and-spigot pipe for inserting at least one external pipeline, a sealing device is arranged between the bell-and-spigot pipe and the external pipeline, a fixing sleeve on the bell-and-spigot pipe is provided with a fixing sleeve resisting the external pipeline, a first half-ring sleeve and a second half-ring sleeve are hinged on the fixing sleeve to prevent the external pipeline from detaching from the bell-and-spigot pipe, and the first half-ring sleeve and the second half-ring sleeve can be opened and closed and clamped on the fixing sleeve by a clamping device.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a pipeline connecting device. Background Art

[0002] With the development of society, the application of pipeline transportation is indispensable in both industrial production and daily life. Traditionally, pipelines are connected through flanges. The connecting ends are pre-installed with flanges, or flanges are welded when the pipelines are installed, and the two pipelines are fixedly connected through flanges. Although it can connect pipelines, it has the following disadvantages:

[0003] 1. The installation process is complicated, not only consuming labor, but also inconvenient to disassemble.

[0004] 2. Direct connection through flange has poor sealing effect and easily causes leakage at the pipe joint. Summary of the invention

[0005] Therefore, in view of the above problems, the present invention proposes a pipeline connecting device which has a simple structure and is convenient for pipeline installation and connection.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is to provide a pipeline connecting device, including a bell-and-spigot pipe for inserting at least one external pipeline, a sealing device is provided between the bell-and-spigot pipe and the external pipeline, a fixed sleeve on the bell-and-spigot pipe is provided with a fixed sleeve that resists the external pipeline, a first half-ring sleeve and a second half-ring sleeve are hinged on the fixed sleeve to prevent the external pipeline from detaching from the bell-and-spigot pipe, and the first half-ring sleeve and the second half-ring sleeve can be opened and closed and clamped on the fixed sleeve by a clamping device.

[0007] A further improvement is that the locking device includes a first connecting ear, the first connecting ear is fixed on the fixed sleeve, the first ring sleeve is provided with a first locking protrusion and a second locking protrusion, the second ring sleeve is provided with a third locking protrusion, a first locking slot is provided between the first locking protrusion and the second locking protrusion for the first connecting ear and the third locking protrusion on the second ring sleeve to be locked in, and a limiting device is provided between the first locking protrusion and the third locking protrusion and the first connecting ear to prevent the first half ring sleeve and the second half ring sleeve from detaching after being engaged.

[0008] A further improvement is that: the limiting device includes a plurality of limiting balls, a limiting groove is provided on the first connecting ear, the limiting ball is arranged in the limiting groove, a reset spring is provided between the inner wall of the limiting groove and the limiting ball, and the first clamping protrusion and the third clamping protrusion are respectively provided with limiting holes that engage with the limiting ball.

[0009] A further improvement is that: the limiting device is a first through hole that can be interconnected, which is formed on the first clamping protrusion, the second clamping protrusion, the third clamping protrusion and the first connecting ear, and a bolt is locked in the first through hole through a nut.

[0010] A further improvement is that: the outer pipe end is provided with an anti-slip ring convex, the first half ring sleeve and the second half ring sleeve are provided with an anti-slip groove engaged with the anti-slip ring convex, and the fixing sleeve is located in the anti-slip groove.

[0011] A further improvement is that: a fourth latching protrusion is fixedly provided on the second connecting sleeve, a second through hole connected to the first through hole is formed on the fourth latching protrusion, and a first avoidance opening for the fourth latching protrusion to be inserted into is formed on the first ring sleeve.

[0012] A further improvement is that: the first clamping protrusion, the second clamping protrusion, the third clamping protrusion, the fourth clamping protrusion and the first connecting ear are respectively provided with a first tensioning path.

[0013] A further improvement is that the engaging device comprises an engaging protrusion, the engaging protrusion is fixedly arranged on the first ring sleeve, and the second ring sleeve is provided with an engaging groove for the engaging protrusion to be engaged.

[0014] A further improvement is that: a plurality of limiting posts are fixedly provided on the engaging protrusion, and the inner wall of the engaging groove is provided with limiting post grooves engaged with the limiting posts.

[0015] A further improvement is that a second tensioning path is provided on the inner walls of the engaging protrusion and the engaging groove.

[0016] The advantages and beneficial effects of the present invention are:

[0017] 1. Easy installation and simple installation process. Just insert the external first pipe and the external second pipe into the socket pipe, and then buckle the first half sleeve and the second half sleeve to complete the installation, which greatly improves the installation efficiency and maintenance efficiency of the construction personnel.

[0018] 2. Two sealing rings are provided at the connection for double sealing, which has good sealing effect and is easy to replace once the sealing ring is damaged. The sealing ring can also tighten the inserted external first pipe and external second pipe to prevent the external first pipe and external second pipe from detaching from the socket pipe.

[0019] 3. The anti-slip ring protrusions on the first external pipe and the second external pipe can be engaged with the anti-slip grooves on the first half ring sleeve and the second half ring sleeve, limiting the lateral movement of the first external pipe and the second external pipe, and preventing the first external pipe or the second external pipe from being pulled out of the socket pipe when being pulled.

[0020] 4. The limiting ball on the first connecting ear can be engaged with the first through hole in the first clamping protrusion and the third clamping protrusion, which can effectively prevent the first half ring sleeve and the second half ring sleeve from automatically separating after being buckled, and prevent the external first pipe and the external second pipe from detaching from the socket pipe after the connection is opened, and further engage the external first pipe and the external second pipe in the first half ring sleeve and the second half ring sleeve.

[0021] 5. The first locking protrusion, the second locking protrusion, the third locking protrusion, the fourth locking protrusion and the first connecting ear are respectively interlaced and mutually tensioned, which can promote the engagement of the first half ring sleeve and the second half ring sleeve and further prevent them from detaching.

[0022] 6. The tensioning channel can deform the first clamping protrusion, the second clamping protrusion, the third clamping protrusion, the fourth clamping protrusion and the first connecting ear, which not only facilitates the installation of the limit ball into the first connecting ear, but also facilitates the clamping protrusions on the first half ring sleeve and the second half ring sleeve and the first connecting ear to be mutually engaged. It can also increase the service life of the first half ring sleeve and the second half ring sleeve, and prevent them from being deformed and damaged due to thermal expansion and contraction during use after installation.

[0023] 7. The first anti-slip convex ring on the fixed sleeve and the external first pipe and the external second pipe is located in the anti-slip groove, and is enclosed in the first ring sleeve and the second ring sleeve, which can not only save the manufacturing cost of the first ring sleeve and the second ring sleeve, but also reduce the space occupied by the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic structural diagram of a pipeline connection device according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the cross-section structure of a bell-and-spigot pipe and a fixing sleeve in accordance with an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the engagement structure of the first half ring sleeve and the second half ring sleeve in accordance with the first embodiment of the present invention.

[0027] Figure 4 This is a schematic structural diagram of a pipeline connection device according to Embodiment 2 of the present invention.

[0028] Figure 5 It is a schematic diagram of the engagement structure of the first half ring sleeve and the second half ring sleeve in embodiment 2 of the present invention. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0030] Embodiment 1:

[0031] like Figure 1-Figure 3As shown, a pipeline connection device comprises an external first pipeline 1 and an external second pipeline 2, a bell-and-spigot pipe 3, a fixing sleeve 4 is provided on the bell-and-spigot pipe 3, the external first pipeline 1 is penetrated in the bell-and-spigot pipe 3 and resists one end of the fixing sleeve 4, two first sealing grooves 32 are provided on the external first pipeline 1, first sealing rings 31 are respectively sleeved in the first sealing grooves 32, the external second pipeline 2 is penetrated in the bell-and-spigot pipe 3 and resists the other end of the fixing sleeve 4, two second sealing grooves 34 are provided on the external second pipeline 2, second sealing rings 33 are respectively sleeved in the second sealing grooves 34, a first semi-ring sleeve 5 and a second semi-ring sleeve 6 are hinged on the fixing sleeve 4 through a pin shaft 45 to prevent the external first pipeline 1 and the external second pipeline 2 from detaching from the bell-and-spigot pipe 3, a first connecting ear 41 is fixedly provided on the fixing sleeve 4, a first clamping protrusion 52 and a second clamping protrusion 51 are provided on the first semi-ring sleeve 5, a third clamping protrusion 61 is provided on the second semi-ring sleeve 6, and the first clamping protrusion 52 A first bayonet 53 is provided between the first connecting ear 41 and the second bayonet 51 for the third bayonet 61 on the second semi-ring sleeve 6 to be engaged, a limiting device is provided between the first bayonet 52 and the third bayonet 61 and the first connecting ear 41 to prevent the first semi-ring sleeve 5 and the second semi-ring sleeve 6 from being disengaged after being disengaged, the limiting device includes two limiting balls 43, a limiting groove 42 is provided on the first connecting ear 41, the limiting ball 43 is arranged in the limiting groove 42, and the inner wall of the limiting groove 42 and the limiting ball 43, a return spring 44 is provided between the first clamping protrusion 52 and the third clamping protrusion 61, respectively, a limiting hole 62 engaged with the limiting ball 43 is provided on the first clamping protrusion 52 and the third clamping protrusion 61, a first anti-slip ring protrusion 11 is provided at the ends of the external first pipe 1 and the external second pipe 2, the first half ring sleeve 5 and the second half ring sleeve 6 are provided with a first anti-slip groove 7 and the first anti-slip groove 7 extends to the first clamping protrusion 52 and the third clamping protrusion 61, when the first half ring sleeve 5 is engaged with the second half ring sleeve 6, the fixed sleeve 4 is located in the anti-slip groove 7. Among them, the first sealing ring 31 and the second sealing ring 33 on the socket pipe 3 can be tensioned and sealed with the inserted external first pipe 1 and the external second pipe 2, which can not only effectively seal and prevent medium leakage, but also prevent the external first pipe 1 and the external second pipe 2 from being separated from the socket pipe 3.After the external first pipe 1 and the external second pipe 2 are inserted into the bell-and-spigot pipe 3, they resist the two ends of the fixed sleeve 4. When the first half ring sleeve 5 and the second half ring sleeve 6 are engaged, the first anti-slip annular protrusion 11 on the fixed sleeve 4 and the external first pipe 1 and the external second pipe 2 is located in the first anti-slip groove 7, and the first half ring sleeve 5 and the second half ring sleeve 6 are covered, which can not only save the manufacturing cost of the first half ring sleeve 5 and the second half ring sleeve 6, but also reduce the space occupied by the connection. At the same time, the first anti-slip annular protrusion 11 can also be connected with the first anti-slip groove The inner wall 54 of 7 resists each other, so that when the first half-annular sleeve 5 and the second half-annular sleeve 6 are engaged, the external first pipe 1 and the external second pipe 2 are completely restricted, so that they cannot move radially, not only preventing them from detaching from the bell-and-spigot 3, but also preventing them from slipping on the bell-and-spigot 3. The limiting ball 43 on the fixed sleeve 4 can pop out when the first connecting ear 41 and the third clamping protrusion 61 are engaged with the first clamping protrusion 52 and the limiting groove 42 in the third clamping protrusion 61, so that the first half-annular sleeve 5 and the second half-annular sleeve 6 will not detach after being engaged.

[0032] Based on the above solution, the limiting device can also be a first through hole 56 that can be interconnected and opened on the first locking protrusion 52, the second locking protrusion 51, the third locking protrusion 61 and the first connecting ear 41, and a bolt is locked in the first through hole 56 through a nut.

[0033] Based on the above solution, the limiting device can also be a threaded through hole 56 that can be interconnected on the first clamping protrusion 52, the second clamping protrusion 51, the third clamping protrusion 61 and the first connecting ear 41, and the threaded through hole 56 is internally threaded with a screw.

[0034] In order to better clamp the first half ring 5 and the second half ring 6, a fourth clamping protrusion 63 is fixedly provided on the second half ring 6, a second through hole 65 connected to the first through hole 56 is provided on the fourth clamping protrusion 63, a first avoidance opening 55 for the fourth clamping protrusion 63 to be clamped in is provided on the first half ring 5, and a second avoidance opening 64 for the second clamping protrusion 51 to be clamped in is clamped on the second half ring 6. The first clamping protrusion 52, the second clamping protrusion 51, the third clamping protrusion 61, the fourth clamping protrusion 63 and the first connecting ear 41 are respectively interlaced and mutually tensioned, so that the first half ring 5 and the second half ring 6 can be further clamped.

[0035] In order to facilitate the engagement of the first half ring sleeve 5 and the second half ring sleeve 6, and the installation of the stop ball 43 in the first connecting ear 41, the first clamping protrusion 52, the second clamping protrusion 51, the third clamping protrusion 61, the fourth clamping protrusion 63 and the first connecting ear 41 are respectively provided with a first tensioning path 8. The first tensioning path 8 can deform the first clamping protrusion 52, the second clamping protrusion 51, the third clamping protrusion 61, the fourth clamping protrusion 63 and the first connecting ear 41, which can not only facilitate the installation of the stop ball 43 into the first connecting ear 41, but also facilitate the clamping protrusions on the first half ring sleeve 5 and the second half ring sleeve 6 and the first connecting ear 41 to be mutually engaged. It can also improve the first half ring sleeve 5 and the second half ring sleeve 6, and prevent them from being deformed and damaged due to thermal expansion and contraction during use after installation.

[0036] Embodiment 2:

[0037] according to Figure 4 and Figure 5 Based on the above scheme, the engaging device of the present invention can also include an engaging protrusion 51', wherein the engaging protrusion 51' is fixedly arranged on the first half ring sleeve 5', and the second half ring sleeve 6' is provided with an engaging groove 61' for the engaging protrusion 51' to be engaged.

[0038] In order to further prevent the engaging protrusion 51' from being disengaged after being engaged in the engaging groove 61', two limiting posts 52' are symmetrically fixed on the engaging protrusion 51', and the inner wall of the engaging groove 61' is provided with limiting post grooves 62' engaged with the limiting posts 52'. After the limiting posts 52' are engaged in the limiting post grooves 62', the first half ring 5' and the second half ring 6' can be further effectively prevented from being disengaged after being engaged.

[0039] In order to prevent the first external pipe 1' and the second external pipe 2' from moving laterally out of the first half annulus 5' and the second half annulus 6', the ends of the first external pipe 1' and the second external pipe 2' are provided with a second anti-slip ring convex 11', and the first half annulus 5' and the second half annulus 6' are provided with a second anti-slip groove 7', and the second anti-slip groove 7' extends to the inner wall 54' of the engaging groove 61' and the engaging protrusion 51'. After the first half annulus 5' and the second half annulus 6' are engaged, the second anti-slip ring convex 11' can resist the inner wall 54' of the engaging groove 61' and the engaging protrusion 51' to prevent radial slippage.

[0040] In order to facilitate the engagement of the engagement protrusion 51' into the engagement groove 61', a second tensioning path 53' is provided on the inner wall of the engagement protrusion 51' and the engagement groove 61'. The second tensioning path 53' can be deformed when the engagement protrusion 51' is engaged into the engagement groove 61', so as to facilitate its engagement into the engagement groove 61'. It can also improve the first half ring sleeve 5' and the second half ring sleeve 6', and prevent them from being deformed and damaged due to thermal expansion and contraction during use after installation.

[0041] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A pipeline connection device, characterized in that: The invention comprises a bell-and-spigot pipe into which at least one external pipe can be inserted, a sealing device is arranged between the bell-and-spigot pipe and the external pipe, a fixing sleeve on the bell-and-spigot pipe is provided with a fixing sleeve resisting the external pipe, a first half-ring sleeve and a second half-ring sleeve are hinged on the fixing sleeve to prevent the external pipe from detaching from the bell-and-spigot pipe, the first half-ring sleeve and the second half-ring sleeve can be opened and closed and clamped on the fixing sleeve by a clamping device, the clamping device comprises a first connecting ear, the first connecting ear is fixedly arranged on the fixing sleeve, a first clamping protrusion and a second clamping protrusion are arranged on the first half-ring sleeve, a third clamping protrusion is arranged on the second half-ring sleeve, a first bayonet is provided between the first clamping protrusion and the second clamping protrusion for clamping the third clamping protrusion on the first connecting ear and the second half-ring sleeve, a limiting device for preventing the first half-ring sleeve and the second half-ring sleeve from detaching after being clamped is arranged between the first clamping protrusion and the third clamping protrusion and the first connecting ear, the limiting device comprises a plurality of limiting balls, the first A connecting ear is provided with a limiting groove, the limiting ball is arranged in the limiting groove, a reset spring is arranged between the inner wall of the limiting groove and the limiting ball, the first clamping protrusion and the third clamping protrusion are respectively provided with limiting holes engaged with the limiting ball, the limiting device is a first through hole that can be interconnected is provided on the first clamping protrusion, the second clamping protrusion, the third clamping protrusion and the first connecting ear, a bolt is locked in the first through hole through a nut, an anti-slip ring protrusion is provided on the external pipe end, the first half-ring sleeve and the second half-ring sleeve are provided with an anti-slip groove engaged with the anti-slip ring protrusion, the fixing sleeve is located in the anti-slip groove, the second half-ring sleeve is fixedly provided with a fourth clamping protrusion, the fourth clamping protrusion is provided with a second through hole connected to the first through hole, the first half-ring sleeve is provided with a first avoidance opening for the fourth clamping protrusion to be engaged, and the first clamping protrusion, the second clamping protrusion, the third clamping protrusion, the fourth clamping protrusion and the first connecting ear are respectively provided with a first tensioning path.

Images