Flexible compensation joint for HDPE (high-density polyethylene) double-wall corrugated pipe

Abstract

The utility model relates to the technical field of corrugated pipe installation, and discloses a flexible compensation joint for an HDPE (high-density polyethylene) double-wall corrugated pipe, which comprises two corrugated pipe bodies, one ends of the two corrugated pipe bodies are fixedly connected with a sealing mechanism, and the surface of the sealing mechanism is fixedly connected with an installation mechanism; the sealing mechanism comprises an upper half flange, the upper half flange is fixedly connected to the lower surface of the top corrugated pipe body, and the top end of the bottom corrugated pipe body is fixedly connected with a lower half flange. According to the flexible compensation connector for the HDPE double-wall corrugated pipe, through the arranged sealing mechanism, the corrugated stainless steel sheet and the rubber composite body sheet are clamped into sealing ring grooves in the lower half flange and the upper half flange at the same time, in addition, during installation, the inner wall of the corrugated pipe body at the top is in tight interference fit with the surface of an EPDM sealing lip, and therefore the inner wall of the corrugated pipe body at the top is in tight interference fit with the surface of the EPDM sealing lip; therefore, an efficient sealing effect can be provided for the joint installation position of the corrugated pipe body, and the phenomena of displacement and deformation of the pipeline joint position are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to corrugated pipe installation technical field, concretely is a kind of flexible compensation joint for HDPE double-wall corrugated pipe. BACKGROUND

[0002] HDPE double-wall corrugated pipe is a kind of high-density polyethylene as main raw material, with inner wall smooth, outer wall is corrugated structure, commonly used in drainage, sewage and other fields of plastic pipe, wherein the flexible compensation joint of HDPE double-wall corrugated pipe is a kind of pipe fitting for connecting HDPE double-wall corrugated pipe, it is usually made of rubber or other elastic materials. Its main role is to compensate the expansion and deformation of pipeline caused by temperature change, foundation settlement and other factors, while also play a sealing role, prevent fluid leakage in pipeline. Flexible compensation joint has good flexibility and corrosion resistance, can adapt to different working environment, improve the stability and reliability of pipeline system.

[0003] In the engineering field of municipal drainage, sewage and communication cable protection, HDPE double-wall corrugated pipe is widely used due to its light weight, corrosion resistance and other advantages. However, due to the complex environment of pipeline laying, foundation settlement, temperature change, displacement and deformation are easy to occur at the joint of pipeline, and the traditional connection mode has the problems of poor sealing performance and easy leakage, therefore, the development of a flexible compensation joint that can adapt to the displacement change of pipeline and ensure efficient sealing effect has become the key to solve the connection problem of HDPE double-wall corrugated pipe. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of flexible compensation joint for HDPE double-wall corrugated pipe to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of flexible compensation joint for HDPE double-wall corrugated pipe, including corrugated pipe body, the corrugated pipe body has two, two the corrugated pipe body one end is fixedly connected with sealing mechanism, the sealing mechanism surface is fixedly connected with installation mechanism;

[0006] The sealing mechanism includes upper half flange, the upper half flange is fixedly connected to the lower surface of top corrugated pipe body, bottom The top end of the corrugated pipe body is fixedly connected with lower half flange, the upper half flange surface is fixedly connected with upper installation ring, the lower half flange surface is fixedly connected with lower installation ring, the upper installation ring bottom end is fixedly connected with plug rod, the upper half flange inside and lower half flange inside are all provided with corrugated stainless steel sheet, the corrugated stainless steel sheet surface is provided with rubber composite sheet, the lower half flange inside is fixedly connected with EPDM sealing lip.

[0007] Preferably, a limiting hole is provided inside the lower mounting ring, and the surface of the insertion rod is slidably connected to the limiting hole, so as to facilitate the movement of the insertion rod within the limiting hole.

[0008] Preferably, sealing ring grooves are formed inside both the lower flange and the upper flange, and the surfaces of the corrugated stainless steel sheet and the rubber composite sheet are in close contact with the inside of the ring grooves.

[0009] Preferably, the installation mechanism includes a mounting base, which is fixedly connected to the surface of the lower flange, and a mounting block is fixedly connected to the surface of the upper flange. A crossbar is rotatably connected inside the mounting base, and a rotating bar is fixedly connected to the surface of the crossbar. A wedge is fixedly connected to one side of the rotating bar. Springs are fixedly connected to both ends inside the mounting block, and a T-shaped rod is fixedly connected to one end of each spring. A retaining strip is fixedly connected to one end of the T-shaped rod.

[0010] Preferably, the mounting block has a through hole inside, and the surface of the T-shaped rod is slidably connected to the inside of the through hole, so that the T-shaped rod can move within the through hole.

[0011] Preferably, the card strip has an insertion slot inside, and the wedge has beveled surfaces at both ends, with the surface of the wedge matching the inside of the insertion slot.

[0012] Preferably, a groove is formed inside the mounting block, and one end of the locking strip is slidably connected to the inside of the groove, so as to facilitate the sliding of the locking strip inside the groove.

[0013] Compared with the prior art, this utility model provides a flexible compensation joint for HDPE double-wall corrugated pipes, which has the following beneficial effects:

[0014] 1. This flexible compensating joint for HDPE double-wall corrugated pipes uses a sealing mechanism to insert the insertion rod into the lower mounting ring. During this process, the corrugated stainless steel sheet and the rubber composite sheet are simultaneously inserted into the sealing ring grooves inside the lower and upper flanges. Furthermore, during installation, the inner wall of the corrugated pipe body at the top is tightly press-fitted with the surface of the EPDM sealing lip, thereby providing a highly efficient sealing effect at the joint installation point of the corrugated pipe body and effectively preventing displacement and deformation at the pipe joint.

[0015] 2. This flexible compensation joint for HDPE double-wall corrugated pipes uses an installation mechanism where rotating the rotating bar, supported by the crossbar, causes the wedge to engage inside the clamping bar. The spring's elasticity then moves the T-shaped rod within the installation block, allowing the wedge to engage and secure the lower and upper flanges, thus strengthening the pipe installation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional sectional view of the sealing mechanism of this utility model.

[0019] Figure 3 This is a perspective view of the installation mechanism of this utility model;

[0020] Figure 4 This is a three-dimensional exploded view of the installation mechanism of this utility model.

[0021] In the diagram: 1. Bellows body; 2. Sealing mechanism; 21. Upper flange; 22. Lower flange; 23. Upper mounting ring; 24. Lower mounting ring; 25. Insert rod; 26. Corrugated stainless steel sheet; 27. Rubber composite sheet; 28. EPDM sealing lip; 3. Installation mechanism; 31. Mounting base; 32. Mounting block; 33. Crossbar; 34. Rotary bar; 35. Wedge block; 36. Spring; 37. T-shaped rod; 38. Locking strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] This utility model provides the following technical solution: Example

[0025] Combination Figures 2 to 4A flexible compensation joint for HDPE double-wall corrugated pipe includes a corrugated pipe body 1, there are two corrugated pipe bodies 1, a sealing mechanism 2 is fixedly connected to one end of the two corrugated pipe bodies 1, and an installation mechanism 3 is fixedly connected to the surface of the sealing mechanism 2.

[0026] The sealing mechanism 2 includes an upper flange 21, which is fixedly connected to the lower surface of the top bellows body 1. A lower flange 22 is fixedly connected to the top of the bottom bellows body 1. An upper mounting ring 23 is fixedly connected to the surface of the upper flange 21, and a lower mounting ring 24 is fixedly connected to the surface of the lower flange 22. A rod 25 is fixedly connected to the bottom of the upper mounting ring 23. Corrugated stainless steel sheets 26 are provided inside both the upper flange 21 and the lower flange 22. A rubber composite sheet 27 is provided on the surface of the corrugated stainless steel sheet 26. An EPDM sealing lip 28 is fixedly connected inside the lower flange 22. A limiting hole is opened inside the lower mounting ring 24, and the surface of the rod 25 is slidably connected to the limiting hole.

[0027] Furthermore, sealing ring grooves are formed inside both the lower flange 22 and the upper flange 21. The surfaces of the corrugated stainless steel sheet 26 and the rubber composite sheet 27 are tightly fitted to the inside of the ring grooves, allowing the insert rod 25 to be inserted into the lower mounting ring 24. During this process, the corrugated stainless steel sheet 26 and the rubber composite sheet 27 are simultaneously engaged in the sealing ring grooves inside the lower flange 22 and the upper flange 21. In addition, during installation, the inner wall of the top bellows body 1 is tightly press-fitted with the surface of the EPDM sealing lip 28, thereby providing a highly efficient sealing effect at the joint installation point of the bellows body 1. Example

[0028] See Figures 1-4 Furthermore, based on Embodiment 1, the installation mechanism 3 includes a mounting base 31, which is fixedly connected to the surface of the lower flange 22. A mounting block 32 is fixedly connected to the surface of the upper flange 21. A crossbar 33 is rotatably connected inside the mounting base 31. A rotating bar 34 is fixedly connected to the surface of the crossbar 33. A wedge 35 is fixedly connected to one side of the rotating bar 34. Springs 36 are fixedly connected to both ends inside the mounting block 32. A T-shaped rod 37 is fixedly connected to one end of the spring 36. A retaining strip 38 is fixedly connected to one end of the T-shaped rod 37. A through hole is opened inside the mounting block 32. The surface of the T-shaped rod 37 is slidably connected to the through hole. An insertion port is opened inside the retaining strip 38. Sloping surfaces are opened at both ends of the wedge 35. The surface of the wedge 35 matches the inside of the insertion port.

[0029] Furthermore, a groove is opened inside the mounting block 32, and one end of the retaining strip 38 is slidably connected to the inside of the groove. When the rotating bar 34 is rotated, under the support of the crossbar 33, the wedge block 35 is driven into the inside of the retaining strip 38. The elasticity of the spring 36 drives the T-shaped rod 37 to move inside the mounting block 32, thereby driving the wedge block 35 into the inside of the retaining strip 38 to install and fix the lower flange 22 and the upper flange 21, thereby strengthening the installation and reinforcement effect of the pipeline.

[0030] In actual operation, when this device is used and HDPE double-wall corrugated pipe is installed, the upper flange 21 and the lower flange 22 are aligned, and the insertion rod 25 is inserted into the lower mounting ring 24. During this process, the corrugated stainless steel sheet 26 and the rubber composite sheet 27 are simultaneously inserted into the sealing ring groove inside the lower flange 22 and the upper flange 21. In addition, during installation, the inner wall of the top corrugated pipe body 1 is tightly press-fitted with the surface of the EPDM sealing lip 28, which can provide a highly efficient sealing effect at the joint installation of the corrugated pipe body 1.

[0031] Furthermore, after installation, the rotating bar 34, supported by the crossbar 33, drives the wedge block 35 to engage inside the retaining bar 38. The elasticity of the spring 36 drives the T-shaped bar 37 to move inside the mounting block 32, thereby engaging the wedge block 35 inside the retaining bar 38 to install and fix the lower flange 22 and the upper flange 21, thus strengthening the installation and reinforcement of the pipeline.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A flexible compensating joint for HDPE double-wall corrugated pipes, comprising a corrugated pipe body (1), characterized in that: There are two corrugated pipe bodies (1), and a sealing mechanism (2) is fixedly connected to one end of each of the two corrugated pipe bodies (1). An installation mechanism (3) is fixedly connected to the surface of the sealing mechanism (2). The sealing mechanism (2) includes an upper flange (21), which is fixedly connected to the lower surface of the top corrugated pipe body (1). A lower flange (22) is fixedly connected to the top of the bottom corrugated pipe body (1). An upper mounting ring (23) is fixedly connected to the surface of the upper flange (21). A lower mounting ring (24) is fixedly connected to the surface of the lower flange (22). A plug rod (25) is fixedly connected to the bottom end of the upper mounting ring (23). Corrugated stainless steel sheets (26) are provided inside the upper flange (21) and the lower flange (22). A rubber composite sheet (27) is provided on the surface of the corrugated stainless steel sheet (26). An EPDM sealing lip (28) is fixedly connected inside the lower flange (22).

2. The flexible compensating joint for HDPE double-wall corrugated pipe according to claim 1, characterized in that: The lower mounting ring (24) has a limiting hole inside, and the surface of the insertion rod (25) is slidably connected to the limiting hole.

3. The flexible compensating joint for HDPE double-wall corrugated pipe according to claim 1, characterized in that: Both the lower flange (22) and the upper flange (21) have sealing ring grooves inside, and the surface of the corrugated stainless steel sheet (26) and the surface of the rubber composite sheet (27) are in close contact with the inside of the ring groove.

4. A flexible compensating joint for HDPE double-wall corrugated pipes according to claim 1, characterized in that: The installation mechanism (3) includes a mounting base (31), which is fixedly connected to the surface of the lower flange (22). A mounting block (32) is fixedly connected to the surface of the upper flange (21). A crossbar (33) is rotatably connected inside the mounting base (31). A rotating bar (34) is fixedly connected to the surface of the crossbar (33). A wedge (35) is fixedly connected to one side of the rotating bar (34). Springs (36) are fixedly connected to both ends inside the mounting block (32). A T-shaped rod (37) is fixedly connected to one end of the spring (36). A retaining strip (38) is fixedly connected to one end of the T-shaped rod (37).

5. A flexible compensating joint for HDPE double-wall corrugated pipes according to claim 4, characterized in that: The mounting block (32) has a through hole inside, and the surface of the T-shaped rod (37) is slidably connected to the through hole.

6. A flexible compensating joint for HDPE double-wall corrugated pipes according to claim 4, characterized in that: The card strip (38) has an opening inside, and the wedge (35) has beveled surfaces at both ends. The surface of the wedge (35) matches the inside of the opening.

7. A flexible compensating joint for HDPE double-wall corrugated pipes according to claim 4, characterized in that: The mounting block (32) has a sliding groove inside, and one end of the clip (38) is slidably connected to the inside of the sliding groove.

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