Double-wall corrugated pipe firstly-installed special-hole connector device

Abstract

The utility model provides a double-wall corrugated pipe pre-assembling special-hole connector device, which relates to the technical field of pipeline connection and comprises a pre-assembling connector, a threaded connector and a pressing sheet. The pre-assembling joint and the threaded joint are respectively provided with a through tubular insertion hole; the pressing sheet is arranged on the pre-assembling joint in a sleeving manner; matched threads are arranged on the outer wall face of one end of the pre-assembling connector and the inner wall face of the tubular inserting hole of the threaded connector, the pre-assembling connector and the threaded connector are detachably connected through the matched threads, the pre-assembling connector and the pressing piece are tightly combined through downward pressure of the threaded connector, therefore, the notch of the double-wall corrugated pipe is firmly fixed, installation is simple, and the sealing effect is good. And the sealing performance of the pipeline is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, and more specifically to a double-wall corrugated pipe pre-installed different-hole joint device. Background Art

[0002] As an important drainage and sewage pipe material, double-wall corrugated pipe is widely used in municipal, industrial and civil buildings. When connecting the main line of double-wall corrugated pipe with the small-sized branch line, the traditional method is usually to cut a hole directly on the main pipe and then insert the drainage pipe into it. Although this connection method is simple, it has the following obvious disadvantages: (1) Insufficient stability. Due to the large gap between the drainage pipe and the main pipeline of the double-wall corrugated pipe, the drainage pipe may collide with the main pipeline due to vibration or water impact during operation, resulting in damage to the double-wall corrugated pipe and expansion of the gap; (2) Poor sealing performance. The directly cut hole cannot provide a good sealing effect, resulting in the odor of sewage and exhaust gas easily overflowing from the gap, seriously reducing the comfort of the surrounding environment; (3) Easy to clog and pollute. On rainy days or when the water level rises, sewage may flow out of the gap and pollute the environment. At the same time, mud, stones and other debris may also enter the double-wall corrugated pipe through the gap, causing blockage of the pipe; (4) Shortening the service life of the pipe. Long-term leakage or seepage will cause the soil to loosen, sink or even collapse, increasing the external pressure of the double-wall corrugated pipe, thereby shortening its service life. Therefore, it is necessary to provide a more stable and reliable connection solution. By designing a special different-hole joint device, the stable connection between the drainage pipe and the double-wall corrugated pipe main line can be ensured, the risk of damage caused by vibration or collision can be eliminated, and the overall stability of the pipeline system can be improved. Utility Model Content

[0003] In order to solve the problems of poor stability and sealing and high risk of damage in the current connection method between the main line of double-wall corrugated pipe and the small-sized branch line, the utility model proposes a double-wall corrugated pipe pre-installed different-hole joint device, which has a convenient installation method and a reliable sealing effect.

[0004] In order to achieve the above technical effects, the technical solution of the utility model is as follows:

[0005] A double-wall corrugated pipe pre-installed different-hole joint device comprises a pre-installed joint, a threaded joint and a pressing piece; the pre-installed joint and the threaded joint are respectively provided with a penetrating tubular plug hole; the pressing piece is sleeved on the pre-installed joint; the outer wall surface of one end of the pre-installed joint and the inner wall surface of the tubular plug hole of the threaded joint are provided with matching threads, and the pre-installed joint and the threaded joint are detachably connected through the matching threads.

[0006] In this technical solution, the problems of poor sealing and low flexibility of the current connection method between the main double-wall corrugated pipe and the small-sized branch pipe are taken into consideration. The downward pressure of the threaded joint is used to make the pre-installed joint and the pressing plate tightly combined, thereby firmly fixing the gap of the double-wall corrugated pipe. The installation is simple and the sealing performance of the pipeline is effectively improved.

[0007] Preferably, the pre-installed joint includes a columnar body and a raised limiting structure, the outer wall surface of one end of the columnar body is provided with a thread matching the inner wall surface of the tubular socket of the threaded joint, and the other end is fixedly connected to the limiting structure.

[0008] Preferably, the pressing sheet is a slidable gasket sleeved on the columnar body.

[0009] Here, the front and rear positions of the lock are controlled by rotating the threaded joint, and the pipe wall of the double-wall corrugated pipe is clamped between the pressing plate and the limiting structure. This is compatible with a variety of HDPE double-wall corrugated pipes with similar wave peak heights, and can protect the pipe wall from damage due to excessive clamping force.

[0010] Preferably, a protruding limiting structure is provided at one end of the pre-installed connector away from the thread.

[0011] Preferably, the pre-installed different-hole joint device also includes a first sealing ring; an annular first sealing groove is provided on the limiting structure, and the first sealing ring is placed in the first sealing groove.

[0012] Here, a special sealing ring is used. During the installation process, when the threaded joint is pressed down, the first sealing ring is squeezed at the same time and deformed to fill the tiny gap between the first installed joint and the wall of the double-wall corrugated pipe to ensure a tight fit. This operation can effectively close the gap at the connection of the double-wall corrugated pipe, thereby achieving an excellent sealing effect.

[0013] Preferably, a surface of the pressing sheet close to the limiting structure is a contoured outer wall surface of the double-wall corrugated pipe.

[0014] Preferably, the wall surface of the limiting structure close to the pressing sheet is a contoured inner wall surface of the double-wall corrugated pipe.

[0015] Here, in order to achieve a perfect fit between the pre-installed different-hole joint device and the double-wall corrugated pipe, the pressing piece and the pre-installed joint adopt an integrated profiling design, according to the arc size and shape of the double-wall corrugated pipe of the same specifications, to ensure that during installation, the pressing piece and the pre-installed joint can completely fit the inner and outer walls of the double-wall corrugated pipe, ensuring balanced force at the connection, thereby further enhancing the stability and sealing of the connection, and reducing the risk of water leakage and seepage.

[0016] Preferably, the inner diameter of the tubular plug hole of the pre-installed joint is the same as the outer diameter of the drainage tube, and the inner diameter of the tubular plug hole of the threaded joint is the same as the diameter of the columnar body.

[0017] Here, by matching the inner hole specification of the first installed different-hole joint with the outer diameter of the drainage tube, the complete sealing of the entire pipeline is ensured.

[0018] Preferably, a deep fool-proof structure is provided inside the tubular socket of the first-installed joint.

[0019] Preferably, the deep fool-proof structure is a step structure.

[0020] Here, the drainage tube and the double-wall corrugated pipe are connected by direct insertion. When the drainage tube is inserted into place, the step structure will prevent it from going deeper. By setting the depth anti-fool structure, the installation process of the drainage tube is simplified and the accuracy of each installation is ensured.

[0021] Preferably, the pre-installed different-hole connector device further comprises a second sealing ring; an annular second sealing groove is provided on the inner wall of the tubular plug hole of the pre-installed connector, and the second sealing ring is sleeved in the second sealing groove.

[0022] Here, when the drainage tube is inserted into the corresponding position of the depth anti-mistake structure of the pre-installed joint, the second sealing ring is deformed and expanded between the drainage tube and the pre-installed joint, so that the drainage tube is quickly fixed on the double-wall corrugated pipe pre-installed different-hole joint device, ensuring the accuracy and sealing of each installation.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The utility model proposes a double-wall corrugated pipe pre-installed different-hole joint device, comprising a pre-installed joint, a threaded joint and a pressing piece; the pre-installed joint and the threaded joint are respectively provided with a penetrating tubular jack; the pressing piece is sleeved on the pre-installed joint; the outer wall surface of one end of the pre-installed joint and the inner wall surface of the tubular jack of the threaded joint are provided with matching threads, the pre-installed joint and the threaded joint are detachably connected through the matching threads, and the downward pressure of the threaded joint makes the pre-installed joint and the pressing piece tightly combined, so as to firmly fix the notch of the double-wall corrugated pipe, the installation is simple, and the sealing performance of the pipeline is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A cross-sectional view of a double-wall corrugated pipe pre-installed with a different-hole joint device proposed in an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the installation of a double-wall corrugated pipe pre-installed with a different-hole joint device according to an embodiment of the utility model;

[0027] In the figure: 1. Install the joint first; 11. Columnar body; 12. Limiting structure; 121. Contoured inner wall surface; 2. Threaded joint; 3. Pressing piece; 4. First sealing ring; 5. Second sealing ring. DETAILED DESCRIPTION

[0028] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0029] In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent actual sizes. The description of the directions of parts such as "upper" and "lower" does not limit the present patent;

[0030] It is understandable to those skilled in the art that descriptions of certain well-known contents in the drawings may be omitted.

[0031] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Example 1

[0033] like Figure 1 As shown, this embodiment proposes a double-wall corrugated pipe pre-installed different-hole joint device, including a pre-installed joint 1, a threaded joint 2 and a pressing plate 3; the pre-installed joint 1 and the threaded joint 2 are respectively provided with a through tubular plug hole, wherein the inner diameter of the tubular plug hole of the pre-installed joint 1 is the same as the outer diameter of the drainage tube, and is used to install the drainage tube; the pressing plate 3 is sleeved on the pre-installed joint 1; the outer wall surface of one end of the pre-installed joint 1 and the inner wall surface of the tubular plug hole of the threaded joint 2 are provided with matching threads, and the pre-installed joint 1 and the threaded joint 2 are detachably connected through the matching threads. During installation, the pre-installed joint 1 and the pressing plate 3 are tightly combined through the downward pressure of the threaded joint 2, thereby firmly fixing the gap of the double-wall corrugated pipe, which is simple to install and effectively improves the sealing performance of the pipeline.

[0034] In this embodiment, the pre-installed joint 1 includes a columnar body 11 and a protruding limiting structure 12. The inner diameter of the tubular socket of the threaded joint 2 is the same as the diameter of the columnar body 11. The outer wall surface of one end of the columnar body 11 is provided with a thread matching the inner wall surface of the tubular socket of the threaded joint 2, and the other end is fixedly connected to the limiting structure 12. In actual application, the pressing sheet 3 fits the outer wall of the double-walled corrugated pipe, and the limiting structure 12 fits the inner wall of the double-walled corrugated pipe. When the threaded joint 2 is pressed down, the limiting structure 12 and the pressing sheet 3 gradually clamp the wall of the double-walled corrugated pipe.

[0035] The pressing piece 3 is a slidable gasket sleeved on the columnar body 11. During the installation process, the front and rear locking positions are controlled by the rotation of the threaded joint 2, and the pipe wall of the double-wall corrugated pipe is clamped between the pressing piece 3 and the limiting structure 12. It is compatible with a variety of HDPE double-wall corrugated pipes with similar wave peak heights, and can protect the pipe wall from damage due to excessive clamping force.

[0036] In the prior art, the drainage tube is usually directly inserted into the notch of the double-walled corrugated pipe, and there is a gap at the connection, which has the risk of water leakage and seepage. This embodiment eliminates this defect through the profiling design, significantly improves the sealing effect, and uses mold shaping technology to imitate the arc size and shape of the double-walled corrugated pipe of the same specification, and injection molds a pressing piece 3 and a pre-installed joint 1 that are completely consistent with the shape and size of the connection of the double-walled corrugated pipe; specifically, the side of the pressing piece 3 close to the limiting structure 12 is the profiling outer wall surface 31 of the double-walled corrugated pipe, and the wall surface of the limiting structure 12 close to the pressing piece 3 is the profiling inner wall surface 121 of the double-walled corrugated pipe. Through the integrated profiling design, the perfect fit between the pre-installed different-hole joint device and the double-walled corrugated pipe is achieved, ensuring that during installation, the pressing piece 3 and the pre-installed joint 1 can completely fit the inner and outer walls of the double-walled corrugated pipe, ensuring that the connection is balanced, thereby further enhancing the stability and sealing of the connection, and reducing the risk of water leakage and seepage.

[0037] Example 2

[0038] like Figure 1 As shown, based on Example 1, this embodiment proposes a double-wall corrugated pipe pre-installed different-hole joint device, including a pre-installed joint 1, a threaded joint 2 and a pressing piece 3; the pre-installed joint 1 and the threaded joint 2 are respectively provided with a through tubular plug hole, wherein the inner diameter of the tubular plug hole of the pre-installed joint 1 is the same as the outer diameter of the drainage pipe, which is used to install the drainage pipe; the pressing piece 3 is sleeved on the pre-installed joint 1; the outer wall surface of one end of the pre-installed joint 1 and the inner wall surface of the tubular plug hole of the threaded joint 2 are provided with matching threads, and the pre-installed joint 1 and the threaded joint 2 are detachably connected through the matching threads The pre-installed joint 1 includes a columnar body 11 and a raised limiting structure 12. The inner diameter of the tubular socket of the threaded joint 2 is the same as the diameter of the columnar body 11. The outer wall surface of one end of the columnar body 11 is provided with a thread matching the inner wall surface of the tubular socket of the threaded joint 2, and the other end is fixedly connected to the limiting structure 12. In actual application, the pressing sheet 3 fits the outer wall of the double-wall corrugated pipe, and the limiting structure 12 fits the inner wall of the double-wall corrugated pipe. When the threaded joint 2 is pressed down, the limiting structure 12 and the pressing sheet 3 gradually clamp the wall of the double-wall corrugated pipe.

[0039] In this embodiment, in order to further ensure the stability and sealing of the pipeline connection, the double-walled corrugated pipe first-installed different-hole joint device also includes a first sealing ring 4; the limiting structure 12 is provided with an annular first sealing groove, and the first sealing ring 4 is sleeved in the first sealing groove. During the installation process, it is ensured to fit closely with the limiting structure 12 and the inner wall of the double-walled corrugated pipe by extrusion, and the gap at the connection of the double-walled corrugated pipe can be effectively closed, thereby achieving an excellent sealing effect.

[0040] As a preferred embodiment, a depth foolproof structure can also be provided inside the tubular jack of the pre-installed joint 1. In this embodiment, the depth foolproof structure is a step structure. During installation, the drainage tube is connected by direct insertion, and the drainage tube is rotated and inserted into the tubular jack of the pre-installed joint 1. When the drainage tube is inserted into place, the step structure will prevent it from going deeper. By providing the depth foolproof structure, the installation process of the drainage tube is simplified, ensuring the accuracy of each installation.

[0041] Furthermore, the double-walled corrugated pipe pre-installed different-hole joint device also includes a second sealing ring 5; an annular second sealing groove is provided on the inner wall of the tubular insertion hole of the pre-installed joint 1, and the second sealing ring 5 is sleeved in the second sealing groove. When the drainage tube is inserted into the corresponding position of the depth foolproof structure of the pre-installed joint 1, the second sealing ring 5 is deformed and expanded between the drainage tube and the pre-installed joint 1, so that the drainage tube is quickly fixed on the double-walled corrugated pipe pre-installed different-hole joint device, ensuring the accuracy and sealing of each installation.

[0042] Example 3

[0043] This embodiment is based on the double-walled corrugated pipe pre-installed different-hole joint device proposed in Embodiment 1 and Embodiment 2. Since in the prior art, the installation and connection between the drainage pipe and the double-walled corrugated pipe lack flexibility, and the joint device is often difficult to adapt to double-walled corrugated pipes of different specifications, and may damage the pipe wall during the clamping process, in this embodiment, a compatible adjustment structure is provided for the double-walled corrugated pipe pre-installed different-hole joint device to solve this problem, thereby improving applicability and safety. The method of using the double-walled corrugated pipe pre-installed different-hole joint device is now further described. Figure 2 :

[0044] During the installation process, first, the pre-installed joint 1 is passed around the inner wall of the double-wall corrugated pipe, and the first sealing ring 4 is sleeved on the pre-installed joint 1. After finding the position of the installation notch, the threaded end of the pre-installed joint 1 is passed through the installation notch and rotated to adjust the position so that the contoured inner wall surface 121 of the limiting structure 12 fits with the inner wall of the double-wall corrugated pipe, and then the pressing sheet 3 is installed so that the contoured outer wall surface 31 fits with the outer wall of the double-wall corrugated pipe. The threaded joint 2 is sleeved on the pre-installed joint 1 through the matching thread and then rotated and pressed down so that its two ends are clamped and fixed on the double-wall corrugated pipe. Finally, the second sealing ring 5 is installed in the groove in the tubular socket of the pre-installed joint 1, and the drainage tube is rotated and inserted so that it enters the bottom of the tubular socket of the pre-installed joint 1 to complete the installation.

[0045] In this embodiment, the pre-installed joint 1 is connected by making the first sealing ring 4 close to the inner wall of the double-wall corrugated pipe to ensure its sealing performance; through the contoured structure design, the force on the notch is balanced to the greatest extent, and it is quickly installed and fixed on the double-wall corrugated pipe; the installation is simple and flexible, and the sealing performance of the pipeline is effectively improved.

[0046] The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations on this patent.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, it is defined that the features of "first", "second", etc. can explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0048] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A double-wall corrugated pipe pre-installed with different hole joint device, characterized in that: The invention comprises a pre-installed joint (1), a threaded joint (2) and a pressing piece (3); the pre-installed joint (1) and the threaded joint (2) are respectively provided with a tubular insertion hole therethrough; the pressing piece (3) is sleeved on the pre-installed joint (1); the outer wall surface of one end of the pre-installed joint (1) and the inner wall surface of the tubular insertion hole of the threaded joint (2) are provided with matching threads, and the pre-installed joint (1) and the threaded joint (2) are detachably connected via the matching threads.

2. The double-wall corrugated pipe pre-installed different hole joint device according to claim 1 is characterized in that: The pre-installed joint (1) comprises a columnar body (11) and a protruding limiting structure (12); a thread matching the inner wall of the tubular socket of the threaded joint (2) is provided on the outer wall of one end of the columnar body (11); and the other end is fixedly connected to the limiting structure (12).

3. The double-wall corrugated pipe pre-installed different hole joint device according to claim 2 is characterized in that: The pressing sheet (3) is a slidable gasket sleeved on the columnar body (11).

4. The double-wall corrugated pipe pre-installed different hole joint device according to claim 3, characterized in that: It also comprises a first sealing ring (4); the limiting structure (12) is provided with an annular first sealing groove, and the first sealing ring (4) is sleeved in the first sealing groove.

5. The double-wall corrugated pipe pre-installed different hole joint device according to claim 3, characterized in that: A surface of the pressing sheet (3) close to the limiting structure (12) is a contoured outer wall surface (31) of the double-wall corrugated pipe.

6. The double-wall corrugated pipe pre-installed different hole joint device according to claim 5, characterized in that: The wall surface of the limiting structure (12) close to the pressing sheet (3) is a contoured inner wall surface (121) of the double-wall corrugated tube.

7. The double-wall corrugated pipe pre-installed different-hole joint device according to claim 1, characterized in that: The inner diameter of the tubular insertion hole of the pre-installed joint (1) is the same as the outer diameter of the drainage tube, and the inner diameter of the tubular insertion hole of the threaded joint (2) is the same as the diameter of the columnar body (11).

8. The double-wall corrugated pipe pre-installed different-hole joint device according to claim 7, characterized in that: A deep fool-proof structure is provided inside the tubular insertion hole of the pre-installed joint (1).

9. The double-wall corrugated pipe pre-installed different-hole joint device according to claim 8, characterized in that: The deep fool-proof structure is a step structure.

10. The double-wall corrugated pipe pre-installed different-hole joint device according to claim 9, characterized in that: It also includes a second sealing ring (5); an annular second sealing groove is provided on the inner wall of the tubular insertion hole of the first-installed joint (1), and the second sealing ring (5) is sleeved in the second sealing groove.

Images