Pipe connecting structure

Abstract

The utility model relates to the technical field of pipe fittings, in particular to a pipe connecting structure which comprises a spigot end pipe fitting and a socket end pipe fitting, the spigot end pipe fitting is connected with the socket end pipe fitting in an inserted mode, a groove is formed in the outer wall face of the spigot end pipe fitting, a sealing ring is installed in the groove in the circumferential direction of the spigot end pipe fitting, and the spigot end pipe fitting is connected with the socket end pipe fitting in an inserted mode. The sealing ring abuts against the inner wall face of the socket end pipe fitting, the groove bottom of the groove protrudes to form a sealing line, and the sealing line abuts against the sealing ring. The pipe connecting structure can locally increase pressure on the sealing ring, improves sealing performance, is not prone to water leakage, and is easy, convenient and fast to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting technical field more particularly, relate to a pipe connecting structure. BACKGROUND

[0002] HDPE winding solid wall drainage pipe, pipe material adopts pilot formula pull pipe construction technology according to the designed guide hole track, adopts directional drilling technology, utilizes enlarged head guide pipe to advance according to the design track, and installs pipe section while excavating. This process has the advantages of small influence on traffic and original soil, wide geological adaptation, small construction land occupation, high construction efficiency, accurate elevation control and the like, and has good market prospect. Since the installation of pipe material is in the mode of excavating while installing, sealing connection between each pipe section is required to ensure the stable operation of the pipe material system and prevent water leakage. In the prior art, a sealing ring is generally arranged at the connecting position of the pipe material to realize sealing effect. However, when the pipe fittings are inserted, the sealing ring is prone to displacement under the action of friction, reducing the sealing effect. Meanwhile, the sealing ring is prone to contamination with sludge during installation, reducing the sealing effect. SUMMARY

[0003] To solve the above problems, the utility model provides a pipe connecting structure, and the sealing ring can be locally reinforced in pressure, the sealing property is enhanced, the pipe connecting structure is not prone to water leakage, and the pipe connecting structure is simple, convenient and fast to install.

[0004] To solve the above problems, the utility model adopts the technical scheme: a pipe connecting structure, which comprises a spigot end pipe fitting and a bell end pipe fitting, the spigot end pipe fitting is inserted into the bell end pipe fitting, a groove is formed in the outer wall surface of the spigot end pipe fitting, the groove is arranged along the circumference of the spigot end pipe fitting, a sealing ring is arranged in the groove, the sealing ring abuts against the inner wall surface of the bell end pipe fitting, the groove bottom is protruded to form a sealing line, and the sealing line abuts against the sealing ring.

[0005] In the technical solution, the socket end pipe can be inserted into the socket end pipe to realize the plug-in connection, so as to ensure the stable connection between the two, the socket end pipe and the socket end pipe have a large contact area, so that the water in the socket end pipe and the socket end pipe is difficult to pass through the contact between the two, and the sealing effect is enhanced. Influenced by manufacturing precision and cost, the socket end pipe and the socket end pipe cannot be completely matched, and there must be a gap between the two, the socket end pipe is sleeved with a sealing ring, when the socket end pipe and the socket end pipe are plugged in, the inner side and the outer side of the sealing ring are respectively in contact with the outer wall surface of the socket end pipe and the inner wall surface of the socket end pipe, the volume of the sealing ring is slightly larger than the gap between the socket end pipe and the socket end pipe, the sealing ring has elasticity, the sealing ring can be compressed to adapt to the gap between the socket end pipe and the socket end pipe, and the elasticity of the sealing ring itself can ensure that the outer wall surface of the socket end pipe and the inner wall surface of the socket end pipe are in close contact, so as to close the gap between the socket end pipe and the socket end pipe, so that the water cannot pass through, and the sealing effect is achieved. The outer wall surface of the socket end pipe is provided with a groove in the circumferential direction, the sealing ring is sleeved on the groove, the groove limits the position of the sealing ring, avoids the friction between the sealing ring and the socket end pipe when the socket end pipe is inserted into the socket end pipe, and plays a role in fixing the position of the sealing ring. The groove bottom is protruded to form a sealing line, and the sealing line is in contact with the sealing ring. The gap between the sealing line and the socket end pipe is smaller, so that the sealing ring at the position is compressed to a greater extent and has a greater pressure, so that the water separation capacity of the sealing ring at the position is enhanced, and the water leakage is prevented.

[0006] Preferably, the inner wall surface of the socket end pipe is protruded to form a protruding buckle, the protruding buckle can be inserted into the groove, and the number of the protruding buckle is the same as that of the groove.

[0007] Preferably, one side of the protruding buckle towards the socket end pipe is an inclined surface.

[0008] Preferably, the sealing line in a single groove is provided with at least two lines in the length direction of the socket end pipe.

[0009] Preferably, the groove is provided with at least two grooves in the length direction of the socket end pipe.

[0010] Preferably, the groove provided with at least two grooves separates the socket end pipe into multiple sections, the diameter of each section of the socket end pipe increases away from the socket end pipe, and the shape of the inner wall surface of the socket end pipe matches that of the outer wall surface of the socket end pipe.

[0011] Preferably, the width of the cross section of the groove decreases from the central axis of the socket end pipe to the outer wall surface of the socket end pipe.

[0012] Preferably, an accommodating groove is arranged on the outer wall surface of the socket end pipe away from the spigot end pipe.

[0013] Preferably, the accommodating groove is arranged in at least two rows along the length direction of the socket end pipe.

[0014] Preferably, the outer peripheral surface of the sealing ring is in a planar type or a bevel tooth type.

[0015] Compared with the prior art, the pipe connecting structure has the advantages that: the socket end pipe and the spigot end pipe are arranged, and the two pipes are connected by insertion, so that the connection is stable; the sealing ring is sleeved on the socket end pipe, and is used for sealing the gap between the socket end pipe and the spigot end pipe, so that the sealing is realized; the recess is arranged on the socket end pipe for mounting the sealing ring, so that the position of the sealing ring cannot be deviated; the groove bottom of the recess is protruded to form a sealing line, so that the pressure of the local sealing ring is increased, and the sealing effect of the sealing ring is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a half sectional view of the pipe connecting structure of the utility model;

[0017] Figure 2 is a half sectional view of the connection part when the socket end pipe and the spigot end pipe are inserted;

[0018] Figure 3 is Figure 1 is an enlarged view of A in figure

[0019] Figure 4 is Figure 1 is a schematic view of the sealing ring in the pipe connecting structure of the utility model.

[0020] In the drawings: 1, socket end pipe; 2, spigot end pipe; 3, recess; 4, sealing ring; 5, sealing line; 6, protruding buckle; 7, accommodating groove. DETAILED DESCRIPTION

[0021] The drawings are only used for exemplary illustration, and should not be understood as a limitation to the patent; in order to better illustrate the embodiment, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted. The positional relationship described in the drawings is only used for exemplary illustration, and should not be understood as a limitation to the patent.

[0022] The same or similar reference signs in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "long", "short" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation and be operated, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0023] The technical scheme of the present application will be further specifically described below by means of specific embodiments and in combination with the drawings:

[0024] Embodiment 1

[0025] As Figure 1 , 3As shown, a pipe connecting structure includes a socket end pipe 1 and a socket end pipe 2, the socket end pipe 1 and the socket end pipe 2 are inserted into each other, a groove 3 is arranged on the outer wall surface of the socket end pipe 1, a sealing ring 4 is arranged in the groove 3, the sealing ring 4 abuts against the inner wall surface of the socket end pipe 2, the groove bottom of the groove 3 is protruded to form a sealing line 5, and the sealing line 5 abuts against the sealing ring 4. The socket end pipe 1 can be inserted into the socket end pipe 2 to realize the insertion connection, so that the connection between the two is stable, the socket end pipe 1 and the socket end pipe 2 have a large contact area, so that the water in the socket end pipe 1 and the socket end pipe 2 is difficult to pass through the contact part of the two, and the sealing effect is enhanced. Influenced by manufacturing precision and cost, the socket end pipe 1 and the socket end pipe 2 cannot be completely matched, and there must be a gap between the two, the sealing ring 4 is sleeved on the socket end pipe 1, the inner side surface and the outer side surface of the sealing ring 4 abut against the outer wall surface of the socket end pipe 1 and the inner wall surface of the socket end pipe 2 respectively after the socket end pipe 1 and the socket end pipe 2 are inserted into each other, the volume of the sealing ring 4 is slightly larger than the gap between the socket end pipe 1 and the socket end pipe 2, the sealing ring 4 has elasticity, the sealing ring 4 can be compressed to adapt to the gap between the socket end pipe 1 and the socket end pipe 2, and the elasticity of the sealing ring 4 can ensure that the sealing ring 4 is in close contact with the outer wall surface of the socket end pipe 1 and the inner wall surface of the socket end pipe 2, so as to close the gap between the socket end pipe 1 and the socket end pipe 2 and prevent the water from passing through, thereby achieving the sealing effect. The outer wall surface of the socket end pipe 1 is circumferentially provided with the groove 3, the sealing ring 4 is sleeved on the groove 3, the groove 3 limits the position of the sealing ring 4, and the friction between the sealing ring 4 and the socket end pipe 2 does not drive the sealing ring 4 to move when the socket end pipe 1 is inserted into the socket end pipe 2, thereby fixing the position of the sealing ring 4. The groove bottom of the groove 3 is protruded to form the sealing line 5, and the sealing line 5 abuts against the sealing ring 4. The gap between the sealing line 5 and the socket end pipe 2 is smaller, the sealing ring 4 at the position is compressed to a larger extent and has a larger pressure, so that the water blocking capacity of the sealing ring 4 at the position is enhanced, and the water leakage is prevented.

[0026] As Figure 1 , 2As shown, the inner wall surface of the socket end pipe 2 is protruded with a protruding buckle 6, which is annular structure arranged along the circumferential direction of the socket end pipe 2, and the position of the protruding buckle 6 corresponds to the position of the groove 3. The protruding buckle 6 has the effect of fixing the relative position of the socket end pipe 2 and the spigot end pipe 1. When the socket end pipe 2 and the spigot end pipe 1 are inserted, the protruding buckle 6 is inserted into the groove 3 on the spigot end pipe 1, which has a fixing effect. When the socket end pipe 2 and the spigot end pipe 1 are subjected to external force and move away from each other, the protruding buckle 6 will be in contact with the groove 3, thereby limiting the relative movement of the two. At the same time, after the protruding buckle 6 is inserted into the groove 3, it will extrude the sealing ring 4 originally located in the groove 3, thereby forming an extrusion effect on the sealing ring 4 at this position, making the sealing ring 4 at this position deform more and the sealing ring 4 have a greater pressure, thereby achieving a better sealing effect. In actual use, the outer wall surface of the socket end pipe 2 and the spigot end pipe 1 is easy to be contaminated with silt or sundries when buried in the ground, so there is still a gap between the socket end pipe 2 and the spigot end pipe 1 after being inserted. Therefore, it is necessary to clean the silt or sundries on the outer wall surface of the spigot end pipe 1 during insertion. During the insertion of the socket end pipe 2 and the spigot end pipe 1, the protruding buckle 6 will be in contact with the outer wall surface of the spigot end pipe 1 and will slide on the outer wall surface of the spigot end pipe 1 with the relative movement between the socket end pipe 2 and the spigot end pipe 1, thereby playing a scraping effect on the outer wall surface of the spigot end pipe 1. During the scraping process, the silt and sundries attached to the outer wall surface of the spigot end pipe 1 are scraped off, ensuring the cleanliness of the outer wall surface of the spigot end pipe 1, and the presence of silt and sundries will not affect the sealing between the spigot end pipe 1 and the socket end pipe 2.

[0027] As Figure 1As shown in the figure, the side of the convex buckle 6 facing the socket end pipe 2 is inclined. By setting the inclined side, the inner diameter of the convex buckle 6 gradually decreases from the end close to the socket end pipe 1 to the end away from the socket end pipe 1. When the socket end pipe 1 is inserted into the socket end pipe 2, the socket end pipe 1 is first inserted into the end with a larger diameter of the convex buckle 6, which reduces the difficulty of insertion of the socket end pipe 1. Then the socket end pipe 1 continues to be inserted, and in this process, the inner diameter of the convex buckle 6 will be reduced to be smaller than the outer diameter of the socket end pipe 1. The socket end pipe 2 has a certain elasticity, and the socket end pipe 2 expands the inner diameter of the convex buckle 6 by deforming until the convex buckle 6 is inserted into the groove 3 on the socket end pipe 1, and the socket end pipe 2 restores its original shape to make the convex buckle 6 inserted into the groove 3. In this process, the socket end pipe 2 is subjected to the radial force of the socket end pipe 1 and is easy to deviate. By setting the side of the convex buckle 6 facing the socket end pipe 2 to be inclined, when the socket end pipe 2 deforms, the socket end pipe 1 has already entered the convex buckle 2 and abuts against the convex buckle 2. Even if the socket end pipe 2 is subjected to the radial force, its position will not deviate under the support of the convex buckle 2, thereby ensuring the accurate position of the socket end pipe 1 during the insertion process.

[0028] As shown in the figure, the single groove 3 has at least two sealing lines 5 arranged along the length direction of the socket end pipe 1. By arranging at least two sealing lines 5, the sealing effect can be enhanced. Figure 3 Embodiment 2

[0029] This embodiment is similar to the above-mentioned embodiment 1, and the difference is that, as shown in the figure, the groove 3 is arranged in at least two rows along the length direction of the socket end pipe 1. The convex buckle 6 on the socket end pipe 2 is inserted into the groove 3 on the socket end pipe 1 to form a fixed position. By arranging at least two grooves 3, the socket end pipe 2 and the socket end pipe 1 have multiple fixed positions, thereby enhancing the stability and sealing of the connection between the socket end pipe 2 and the socket end pipe 1.

[0030] Figure 1 As shown in the figure, the single groove 3 has at least two sealing lines 5 arranged along the length direction of the socket end pipe 1. By arranging at least two sealing lines 5, the sealing effect can be enhanced.

[0031] As shown in the figure, the single groove 3 has at least two sealing lines 5 arranged along the length direction of the socket end pipe 1. By arranging at least two sealing lines 5, the sealing effect can be enhanced. Figure 1 ​As shown, at least two grooves 3 are arranged to divide the socket end pipe 1 into multiple sections, the diameter of each section of the socket end pipe 1 increases away from the spigot end pipe 2, and the shape of the inner wall surface of the spigot end pipe 2 matches the shape of the outer wall surface of the socket end pipe 1. The number of grooves 3 is the same as the number of buckles 6. At least two grooves 3 are arranged, and therefore at least two buckles 6 are arranged. During the process of inserting the spigot end pipe 2 into the socket end pipe 1, when the buckle 6 at the rear end abuts against the inner wall surface of the socket end pipe 1, the buckle 6 at the rear end will cause the spigot end pipe 2 at the front end to be lifted up, so that the buckle 6 at the front end is separated from the outer wall surface of the socket end pipe 1 and loses the scraping function. Therefore, the diameter of the socket end pipe 1 divided into multiple sections by the grooves 3 needs to increase away from the spigot end pipe 2, and even if the buckle 6 at the rear end abuts against the outer wall surface of the socket end pipe 1, the buckle 6 at the front end can still abut against the outer wall surface of the socket end pipe 1 with a larger diameter.

[0032] As shown in Figure 3 , the width of the cross section of the groove 3 decreases from the inner wall surface of the socket end pipe 1 to the outer wall surface of the socket end pipe 1. This arrangement makes the cross section of the groove 3 have a trapezoidal structure, so that the sealing ring 4 installed in the groove 3 is not easy to be separated.

[0033] Embodiment 3

[0034] This embodiment is similar to the above-mentioned embodiment 1, and the difference is that, as shown in Figure 1 , 2 , a containing groove 7 is arranged on the outer wall surface of the socket end pipe 1 away from the spigot end pipe 2, and the containing groove 7 is arranged along the circumference of the socket end pipe 1. After the buckle 6 scrapes the outer wall surface of the socket end pipe 1, the silt and debris still adhere to the outer wall surface of the socket end pipe 1. By arranging the containing groove 7, the silt and debris scraped can be pushed into the containing groove 7, so that the sealing between the spigot end pipe 2 and the socket end pipe 2 is ensured.

[0035] As shown in Figure 1 , 2 , at least two containing grooves 7 are arranged along the length direction of the socket end pipe 1. By arranging at least two containing grooves 7, the containing space for silt and debris can be increased,

[0036] As shown in Figure 4 , the outer circumferential surface of the sealing ring 4 is a flat structure or a bevel-toothed protruding structure. The sealing ring 4 with a flat structure is directly embedded into the groove 3, and the outer circumferential surface and the outer wall surface of the socket end pipe 1 form a plane, so that dirt is not easy to hide; the sealing ring 4 with a bevel-toothed protruding structure has a larger compression amount and can withstand higher water pressure.

[0037] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A pipe connection structure, characterized in that, The utility model provides a socket end pipe fitting (2) and spigot end pipe fitting (1) are inserted to each other, recess (3) is set up on the outer wall surface of spigot end pipe fitting (1), recess (3) is set up along the circumference of spigot end pipe fitting (1), sealing ring (4) is installed in recess (3), sealing ring (4) is in contact with the inner wall surface of socket end pipe fitting (2), the groove bottom of recess (3) is projected and forms sealing line (5), sealing line (5) is in contact with sealing ring (4).

2. A pipe coupling structure according to claim 1, wherein The inner wall surface of socket end pipe fitting (2) is projected and forms male buckle (6), male buckle (6) is annular structure and is set up along the circumferential direction of socket end pipe fitting (2), and the position of male buckle (6) corresponds with the position of recess (3).

3. A pipe coupling structure according to claim 2, wherein The one side of male buckle (6) towards socket end pipe fitting (2) is inclined surface.

4. A pipe coupling structure according to claim 1, wherein Sealing line (5) in single recess (3) is provided with at least two along the length direction of spigot end pipe fitting (1).

5. A pipe coupling structure according to claim 1, wherein Recess (3) is provided with at least two along the length direction of spigot end pipe fitting (1).

6. A pipe coupling structure according to claim 3, wherein The recess (3) of being provided with at least two is divided into multiple sections for spigot end pipe fitting (1), and the diameter of each section of spigot end pipe fitting (1) is increased away from socket end pipe fitting (2), and the shape of the inner wall surface of socket end pipe fitting (2) is matched with the shape of the outer wall surface of spigot end pipe fitting (1).

7. A pipe coupling structure according to claim 1, wherein The width of the cross section of recess (3) is decreased from the central axis of spigot end pipe fitting (1) to the direction of the outer wall surface of spigot end pipe fitting (1).

8. A pipe coupling structure according to claim 1, wherein The outer wall surface of the one end of spigot end pipe fitting (1) away from socket end pipe fitting (2) is provided with accommodating groove (7), and accommodating groove (7) is set up along the circumference of spigot end pipe fitting (1).

9. A pipe joining structure according to claim 8, wherein Accommodating groove (7) is provided with at least two along the length direction of spigot end pipe fitting (1).

10. A pipe coupling structure according to claim 1, wherein The outer circumferential surface of sealing ring (4) is flat or oblique tooth shape projection structure.

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