Double-wall corrugated pipe sealing connection assembly

Abstract

The utility model relates to a double-wall corrugated pipe sealing connection assembly which comprises a first double-wall corrugated pipe and a second double-wall corrugated pipe, the first double-wall corrugated pipe and the second double-wall corrugated pipe each comprise a large-diameter part, a small-diameter part and a flaring part, one end of each flaring part is fixedly connected with the corresponding large-diameter part, and the other end of each flaring part is fixedly connected with the corresponding small-diameter part; the inner surface of the large-diameter part is provided with an anti-disengaging clamping groove, the small-diameter part of the second double-wall corrugated pipe is inserted into the large-diameter part of the first double-wall corrugated pipe, and the inner sealing piece is installed between the small-diameter part of the second double-wall corrugated pipe and the large-diameter part of the first double-wall corrugated pipe. One end of the inner sealing piece is connected with the anti-disengaging clamping groove in a clamped mode, the other end of the inner sealing piece is connected with the small-diameter portion of the second double-wall corrugated pipe in a clamped mode, and the problems that in some special construction environments, a sealing structure is prone to disengaging, and a self-locking structure is prone to failure are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to corrugated pipe sealing technical field, concretely relates to a double -walled corrugated pipe sealing connection subassembly. BACKGROUND

[0002] Double -walled corrugated pipe because of light weight, tenacity is good, construction is fast, long life etc. characteristics, get wide application at home and abroad, under the condition of same load, HDPE double -walled corrugated pipe only needs thin pipe wall to meet the requirement and replaces concrete pipe and cast iron pipe in large quantities. But in engineering practical application, double -walled corrugated pipe needs to be installed in section between pipe and pipe inevitably, when this, it requires that pipe and pipe between have stable reliable connecting structure to reach certain sealing effect.

[0003] At present, the most widely used HDPE double -walled corrugated pipe is the connecting mode of rubber ring at flared portion, and the rubber ring, as an elastic element, compensates thermal expansion and vibration in the pipeline system to ensure the stability and safety of the pipeline. However, in some special construction environments, the connection with only rubber ring often leads to disconnection.

[0004] The comparative document provides a double -walled corrugated pipe with anti -falling function, which comprises a first corrugated pipe, a second corrugated pipe and an elastic sealing ring, the front ends of the first corrugated pipe and the second corrugated pipe are provided with sockets, the elastic sealing ring is installed at the first wave trough of the tail of the second corrugated pipe, and a spring sheet type structure anti -falling buckle is further included, the sockets of the first corrugated pipe and the second corrugated pipe are provided with a circle of convex circular ring steps, a circle of annular grooves is arranged at the third wave crest of the tail of the second corrugated pipe, and the annular grooves can place the spring sheet type structure anti -falling buckle. Among them, the elastic sealing ring is compressed to produce deformation to play a sealing function, the spring sheet type structure anti -falling buckle is popped up at the convex circular ring step, plays a self -locking anti -falling function, and improves the sealing and self -locking anti -falling effect of the connection between the first corrugated pipe and the second corrugated pipe.

[0005] However, in the prior art, the spring sheet thickness of the spring sheet type structure anti -falling buckle is too small, and the strength is too low, so that in some special construction environments, if there is a large relative displacement between the pipes during use or installation, the spring sheet may also be broken, resulting in self -locking failure. At the same time, the elastic sealing ring may be disconnected in some special construction environments, thereby reducing the sealing effect.

[0006] Therefore, it is still necessary to provide a double -walled corrugated pipe connecting piece with a sealing structure that is not easy to disconnect and a self -locking structure that is not easy to fail in some special construction environments. UTILITY MODEL CONTENTS

[0007] The utility model discloses a purpose at overcoming the rubber ring of the double wall corrugated pipe sealing connector in some special construction environment easy to open, the self locking mechanism may appear the position fracture of self locking mechanism position and lead to the problem of self locking failure when the relatively large displacement between pipe and pipe occurs, provide a double wall corrugated pipe sealing connection assembly.

[0008] In order to realize above-mentioned purpose, the utility model adopts technical scheme as follows:

[0009] A double wall corrugated pipe sealing connection assembly, including first double wall corrugated pipe and second double wall corrugated pipe, first double wall corrugated pipe and second double wall corrugated pipe all include large diameter part, small diameter part and flared portion, one end of flared portion is fixedly connected with large diameter part, the other end of flared portion is fixedly connected with small diameter part, the inner surface of large diameter part is provided with anti - drop card slot, the small diameter part of second double wall corrugated pipe is inserted to the large diameter part of first double wall corrugated pipe, still include the inner sealing piece of being sleeved on second double wall corrugated pipe, the inner sealing piece is installed between the small diameter part of second double wall corrugated pipe and the large diameter part of first double wall corrugated pipe, one end of inner sealing piece is engaged with anti - drop card slot, and the other end is engaged with the small diameter part of second double wall corrugated pipe.

[0010] In the working process of above-mentioned technical scheme, first, the end port of the inner sealing piece and the anti - drop card slot engagement is inserted to the small diameter part one end of second double wall corrugated pipe, makes the inner sealing piece sleeve into second double wall corrugated pipe and makes the other end of inner sealing piece and the wave valley on second double wall corrugated pipe engagement fixed, second, the large diameter part of first double wall corrugated pipe is inserted to the small diameter one end of second double wall corrugated pipe until the flared portion of first double wall corrugated pipe and the small diameter part end surface of second double wall corrugated pipe abut, while making the anti - drop card slot on the inner surface of first double wall corrugated pipe large diameter part and inner sealing piece in the end far from flared portion engagement fixed, finally, make the inner sealing piece stable installation between the small diameter part of second double wall corrugated pipe and the large diameter part of first double wall corrugated pipe, realize the sealing connection of first double wall corrugated pipe and second double wall corrugated pipe, and the inner sealing piece is as a whole component, higher strength, when working in special construction environment, the engagement of anti - drop card slot and inner sealing piece is more difficult to be destroyed, and the other end of inner sealing piece and the wave valley on second double wall corrugated pipe engagement fixed are more difficult to open.

[0011] Preferably, the inner sealing piece includes a connecting portion, a latching protrusion at one end of the connecting portion, and a self-locking protrusion at the other end of the connecting portion, the self-locking protrusion is engaged with the anti-drop card slot, and a connecting portion is used to connect between the latching protrusion and the self-locking protrusion, so as to become a whole cylindrical component with higher structural strength.

[0012] Preferably, the length of the connecting portion is four to eight times the length of the second double wall corrugated pipe peak plus valley.

[0013] Preferably, the side of the clamping protrusion away from the one end of the connecting portion is provided as a first abutting plane for bearing axial external force, the first abutting plane is parallel to the side of the wave crest of the double-wall corrugated pipe, the side of the clamping protrusion close to the one end of the connecting portion is provided as a first mounting surface for facilitating installation, and the first mounting surface and the top surface of the wave crest of the double-wall corrugated pipe are mutually inclined; wherein the first mounting surface and the top surface of the second wave crest of the double-wall corrugated pipe are mutually inclined, that is, the first mounting surface and the second wave crest of the double-wall corrugated pipe are at a certain angle, so that the entire clamping protrusion can be smoothly connected with the wave trough of the second double-wall corrugated pipe during installation.

[0014] Preferably, the clamping protrusion is in the shape of a right-angled trapezoid, wherein the length of the top surface of the right-angled trapezoidal clamping protrusion is less than the axial length of the wave trough, and the height is greater than half the height of the wave crest, so that the clamping protrusion is stably connected with the wave trough of the second double-wall corrugated pipe.

[0015] Preferably, the side of the self-locking protrusion away from the one end of the connecting portion is provided as a second abutting plane for bearing axial external force, the second abutting plane is parallel to the inner wall of the anti-escape groove, the side of the self-locking protrusion close to the one end of the connecting portion is provided as a second mounting surface, and the second mounting surface and the inner wall of the anti-escape groove are mutually inclined; wherein the second mounting surface and the inner wall of the anti-escape groove are mutually inclined, that is, the second mounting surface and the inner wall of the anti-escape groove are at a certain angle, so that the entire self-locking protrusion can be smoothly connected with the anti-escape groove during installation, and the angle can form a friction self-locking during work.

[0016] Preferably, the self-locking protrusion is in the shape of a triangular body; the self-locking protrusion is provided in the shape of a triangular body, so that it has a solid structure and is not easy to break during clamping installation or under axial action.

[0017] Preferably, the inner sealing member includes an inner bone layer and an outer coating layer coated on the outer side of the inner bone layer; wherein the inner bone layer increases the strength of the inner sealing member so that it is not easy to be plastically deformed, and the outer coating layer improves the sealing effect.

[0018] Preferably, the inner bone layer is integrally formed; specifically, the integrally formed inner bone layer means that the self-locking protrusion, the clamping protrusion and the connecting portion are integrally injection molded as a whole, so that the inner bone layer has fewer defects and higher strength.

[0019] Preferably, the material of the inner bone layer is plastic, and the material of the outer coating layer is rubber elastomer; wherein the plastic of the inner bone layer can be PE or PP or PPB, and the rubber elastomer material of the outer coating layer can be ethylene-propylene-diene rubber or nitrile rubber or silicone rubber.

[0020] The utility model discloses a beneficial effect: the whole inner sealing piece is installed in the first double -walled corrugated pipe and the second double -walled corrugated pipe between, and the inner sealing piece is set to one whole and makes it have higher strength, and when the pipe and the pipe between in some special construction environment use or installation process if the relatively large displacement occurs, it is not easy to occur self -locking mechanism failure, and the sealing structure is not easy to break off under the premise that self -locking structure is not easy to fail. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure sectional view of a double -walled corrugated pipe sealing connection subassembly of the utility model;

[0022] Figure 2 It is a structure schematic view of inner sealing piece;

[0023] Figure 3 It is the internal structure schematic view of inner sealing piece. DETAILED DESCRIPTION

[0024] The implementation of the utility model will be explained below with reference to the drawings and preferred embodiments, and the other advantages and effects of the utility model can be easily understood by the person skilled in the art from the content disclosed in the specification. The utility model can also be implemented or applied by another different specific embodiment, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be understood that the preferred embodiments are only for illustrating the utility model, and not for limiting the protection scope of the utility model.

[0025] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the utility model in a schematic manner, and only the components related to the utility model are shown in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component in actual implementation can be randomly changed, and the component layout pattern can also be more complex.

[0026] Example 1

[0027] As Figure 1As shown is an embodiment 1 of a double-wall corrugated pipe sealing connection assembly, comprising a first double-wall corrugated pipe 1 and a second double-wall corrugated pipe 2, the first double-wall corrugated pipe 1 and the second double-wall corrugated pipe 2 each comprising a large-diameter portion 103, a small-diameter portion 101 and a flared portion 102, one end of the flared portion 102 being fixedly connected with the large-diameter portion 103, and the other end of the flared portion 102 being fixedly connected with the small-diameter portion 101; the inner surface of the large-diameter portion 103 is provided with an anti-escape groove 1031, the small-diameter portion 101 of the second double-wall corrugated pipe 2 is inserted into the large-diameter portion 103 of the first double-wall corrugated pipe 1, further comprising an inner sealing element 3 sleeved on the second double-wall corrugated pipe 2, the inner sealing element 3 being installed between the small-diameter portion 101 of the second double-wall corrugated pipe 2 and the large-diameter portion 103 of the first double-wall corrugated pipe 1; one end of the inner sealing element 3 is in clamping connection with the anti-escape groove 1031, and the other end is in clamping connection with the small-diameter portion 101 of the second double-wall corrugated pipe 2.

[0028] Further, the inner sealing element 3 comprises a connecting portion 302, a clamping protrusion 301 at one end of the connecting portion 302 and a self-locking protrusion 303 at the other end of the connecting portion 302, the self-locking protrusion 303 being in clamping connection with the anti-escape groove 1031, and the clamping protrusion 301 and the self-locking protrusion 303 being connected by the connecting portion 302 to form a whole cylindrical component, having higher structural strength.

[0029] Further, the length of the connecting portion 302 is four to eight times the length of the second double-wall corrugated pipe peak plus valley.

[0030] Specifically, when the connecting portion 302 is set too long, the large-diameter portion 103 of the corresponding first double-wall corrugated pipe 1 also needs to be set too long, at this time, because the large-diameter portion 103 coincides with the small-diameter portion 101 of the second double-wall corrugated pipe 2, this will cause unnecessary waste of materials, when the connecting portion 302 is set too short, at this time, the first double-wall corrugated pipe 1 inserted into the second double-wall corrugated pipe 2 can be regarded as a simply supported beam model, the two end supports will be unreliable in the vertical direction due to the connecting portion 302 being set too short.

[0031] The beneficial effects of the embodiment are:

[0032] The self-locking protrusion for self-locking and the engaging protrusion 301 for sealing are connected by the connecting part 302 to form an integral inner sealing member 3, which has high strength and is engaged and installed between the first double-wall corrugated pipe 1 and the second double-wall corrugated pipe 2. In some special construction environments, if the pipes have a large relative displacement during installation, the self-locking mechanism is not prone to failure, and the sealing structure is not prone to disengagement. At the same time, the axial length of the connecting part 302 is set to one to two times the length of the second double-wall corrugated pipe peak plus valley, which ensures the stability and reliability of the connection between the first double-wall corrugated pipe 1 and the second double-wall corrugated pipe 2 in the vertical direction under the action of gravity and pressure, while not wasting manufacturing materials.

[0033] Embodiment 2

[0034] As Figures 1-3 Embodiment 2 of a double-wall corrugated pipe sealing connection assembly is shown, which includes a first double-wall corrugated pipe 1 and a second double-wall corrugated pipe 2. The first double-wall corrugated pipe 1 and the second double-wall corrugated pipe 2 each include a large diameter part 103, a small diameter part 101, and a flared part 102. The flared part 102 is fixedly connected to the large diameter part 103 at one end, and is fixedly connected to the small diameter part 101 at the other end. The inner surface of the large diameter part 103 is provided with an anti-disengagement groove 1031, and the small diameter part 101 of the second double-wall corrugated pipe 2 is inserted into the large diameter part 103 of the first double-wall corrugated pipe 1. The inner sealing member 3 is sleeved on the second double-wall corrugated pipe 2, and is installed between the small diameter part 101 of the second double-wall corrugated pipe 2 and the large diameter part 103 of the first double-wall corrugated pipe 1. One end of the inner sealing member 3 is engaged and connected with the anti-disengagement groove 1031, and the other end is engaged and connected with the small diameter part 101 of the second double-wall corrugated pipe 2.

[0035] Further, the inner sealing member 3 includes a connecting part 302, an engaging protrusion 301 at one end of the connecting part 302, and a self-locking protrusion 303 at the other end of the connecting part 302. The self-locking protrusion 303 is engaged and connected with the anti-disengagement groove 1031, and the engaging protrusion 301 and the self-locking protrusion 303 are connected by a connecting part 302 to form an integral cylindrical component, which has higher structural strength.

[0036] Further, the side of the engaging protrusion 301 away from the center of the connecting portion 302 is provided with a first abutting plane 3012 for bearing axial external force, the first abutting plane 3012 is parallel to the side of the double-wall corrugated pipe wave crest, the side of the engaging protrusion 301 close to the center of the connecting portion 302 is provided with a first mounting surface 3011 for facilitating installation, the first mounting surface 3011 is inclined to the top surface of the wave crest of the second double-wall corrugated pipe 2.

[0037] Further, the engaging protrusion 301 is in the shape of a right-angled trapezoid, wherein the length of the top surface of the right-angled trapezoidal engaging protrusion 301 is less than the axial length of the wave valley and has a height greater than half of the wave crest, so that the engaging protrusion 301 is stably engaged with the wave valley of the second double-wall corrugated pipe 2.

[0038] Further, the side of the self-locking protrusion 303 away from the center of the connecting portion 302 is provided with a second abutting plane 3032 for bearing axial external force, the second abutting plane 3032 is parallel to the inner wall of the anti-disengagement groove 1031, the side of the self-locking protrusion 303 close to the center of the connecting portion 302 is provided with a second mounting surface 3031, the second mounting surface 3031 is inclined to the inner wall of the anti-disengagement groove 1031, wherein the second mounting surface 3031 is inclined to the inner wall of the anti-disengagement groove 1031, that is, the second mounting surface 3031 is at a certain angle to the inner wall of the anti-disengagement groove 1031, which not only enables the entire self-locking protrusion 303 to be smoothly connected with the anti-disengagement groove 1031 during installation, but also forms a friction self-locking during work.

[0039] Further, the self-locking protrusion 303 is in the shape of a triangular body; the self-locking protrusion 303 is provided in the shape of a triangular body, so that it has a solid structure and is not prone to breaking when engaged and installed or subjected to axial force.

[0040] The beneficial effects of the present embodiment relative to embodiment 1 are as follows: the entire engaging protrusion 301 is provided in the shape of a right-angled trapezoid, the first mounting surface 3011 enables the engaging protrusion 301 to more easily slide over the wave crest and enter the wave valley during installation, and the engaging installation is more smooth; the first abutting plane 3012 enables the engaging protrusion 301 to not easily slide out of the wave valley and appear to be disengaged when subjected to axial force, thereby improving the sealing effect in some special construction environments; the self-locking portion is provided at one end of the connecting portion 302 and is provided in the shape of a solid triangular body, so that it is connected with the anti-disengagement groove 1031, and the second mounting surface 3031 forms a friction self-locking at the contact position with the anti-disengagement groove 1031 during work, and the self-locking portion is not prone to breaking in special construction environments.

[0041] Embodiment 3

[0042] As Figures 1-3 Embodiment 3 of a double-wall corrugated pipe sealing connection assembly is shown, which is different from Embodiment 1 in that, further, the inner sealing member 3 comprises an inner bone layer 304 and an outer coating layer 305 coated outside the inner bone layer 304; wherein the inner bone layer 304 increases the strength of the inner sealing member 3 so that it is not easy to be shaped and deformed, and the outer coating layer 305 improves the sealing effect.

[0043] Further, the inner bone layer 304 is integrally formed, specifically, the integrally formed inner bone layer refers to that the self-locking protrusion, the clamping protrusion and the connecting part are integrally injection molded as a whole, so that the inner bone layer has fewer defects and higher strength.

[0044] Further, the material of the inner bone layer 304 is plastic, and the material of the outer coating layer 305 is rubber elastomer; wherein the plastic of the inner bone layer 304 can be PE or PP or PPB, and the rubber elastomer material of the outer coating layer 305 can be ethylene-propylene-diene rubber or nitrile rubber or silicone rubber.

[0045] The beneficial effects of the present embodiment relative to Embodiment 1 are that the inner structure of the inner sealing member 3 is divided into the inner bone layer 304 and the outer coating layer 305, which increases the strength of the inner sealing member 3 while also improving the sealing effect.

[0046] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. The equivalent substitutions or transformations made by the person skilled in the art on the basis of the present application are all within the protection scope of the present application.

Claims

1. A double-wall corrugated pipe sealing connection assembly, comprising a first double-wall corrugated pipe (1) and a second double-wall corrugated pipe (2), the first double-wall corrugated pipe (1) and the second double-wall corrugated pipe (2) each comprising a large-diameter portion (103), a small-diameter portion (101) and a flared portion (102), one end of the flared portion (102) being fixedly connected with the large-diameter portion (103), the other end of the flared portion (102) being fixedly connected with the small-diameter portion (101); an anti-escape groove (1031) being arranged on an inner surface of the large-diameter portion (103), the small-diameter portion (101) of the second double-wall corrugated pipe (2) being inserted into the large-diameter portion (103) of the first double-wall corrugated pipe (1), characterized in that, The inner sealing element (3) is sleeved on the second double-wall corrugated pipe (2), and is connected with the small-diameter part (101) of the second double-wall corrugated pipe (2) and the large-diameter part (103) of the first double-wall corrugated pipe (1).

2. A twin-wall corrugated pipe and fitting assembly according to claim 1, wherein: The inner sealing element (3) includes a connecting part (302), a clamping protrusion (301) at one end of the connecting part (302), and a self-locking protrusion (303) at the other end of the connecting part (302).

3. A twin-wall corrugated pipe and fitting assembly according to claim 2, wherein: The length of the connecting part (302) is four to eight times the length of the peak and valley of the second double-wall corrugated pipe (2).

4. A twin-wall corrugated pipe and fitting assembly according to claim 2, wherein, The side of the clamping protrusion (301) away from the center of the connecting part (302) is provided with a first abutting plane (3012) for bearing axial external force, and the first abutting plane (3012) is parallel to the side of the double-wall corrugated pipe peak.

5. A twin-wall corrugated pipe and fitting assembly according to claim 4, wherein, The clamping protrusion (301) is in the shape of a right trapezoid.

6. A double wall corrugated pipe coupling assembly according to claim 2, wherein, The self-locking protrusion (303) is provided with a second abutting plane (3032) for bearing axial external force away from the center of the connecting part (302), and the second abutting plane (3032) is parallel to the inner wall of the anti-escape groove (1031).

7. A twin-wall corrugated pipe and fitting assembly according to claim 6, wherein, The self-locking protrusion (303) is in the shape of a triangular body.

8. A twin-wall corrugated pipe and fitting assembly according to any one of claims 2 to 7, wherein: The inner sealing element (3) further includes an inner bone layer (304) and an outer coating layer (305) coated outside the inner bone layer (304).

9. A twin-wall corrugated pipe and fitting assembly according to claim 8, wherein, The inner bone layer (304) is integrally formed.

10. A double wall corrugated pipe coupling assembly according to claim 8 wherein, The material of the inner bone layer (304) is plastic, and the material of the outer coating layer (305) is rubber elastomer.

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