PE drainage pipe with mounting joint

Abstract

The utility model mainly relates to the technical field of PE drainage pipe, concretely relates to a PE drainage pipe with installation joint, including the outer tube, and the inner tube is coaxially sealed sliding sleeve and is located in the outer tube, and one end extends to the outer tube, and the extension end of inner tube is connected with adjustable joint assembly through flexible connecting section intercommunication, adjustable joint assembly includes the base pipe with flexible connecting section intercommunication, and at least one group of radial nested sealing ring group is arranged coaxially in the base pipe, wherein the outermost sealing ring is fixedly connected with the inner wall of base pipe, and the adjacent sealing rings are sealed through the radial clamping of complementary annular clamping groove and clamping ring structure, and the inner hole of innermost sealing ring is sleeved with the mounting pipe of sealing sleeve, and the radius of sealing ring in sealing ring group decreases gradually from outside to inside, and then the number of sealing ring can be controlled, and the mounting pipe corresponding to the inner diameter of innermost sealing ring is matched, and adjustable joint assembly can be connected with external pipelines with different pipe diameters.

Description

Technical Field

[0001] This utility model mainly relates to the field of PE drainage pipe technology, specifically to a PE drainage pipe with a built-in installation joint. Background Technology

[0002] Polyethylene (PE) drainage pipes are widely used in building drainage and municipal engineering projects due to their strong corrosion resistance and low fluid resistance. However, conventional PE drainage pipes are shipped in fixed lengths. In actual installation scenarios, different projects have different requirements for pipe length, requiring construction parties to pre-order or purchase pipes of various lengths. This not only significantly increases production costs and inventory management pressure, but also makes it impossible to flexibly adjust for dimensional deviations on the construction site, necessitating re-ordering or cutting of pipes, resulting in material waste and project delays. Furthermore, PE drainage pipes typically have fixed-radius interface structures at both ends. When connecting external pipes of different diameters, additional reducers or flange adapters must be used, which are costly and cumbersome to install. Utility Model Content

[0003] 1. The technical problem to be solved by the utility model: This utility model provides a PE drainage pipe with a built-in installation connector to solve the technical problems existing in the background art.

[0004] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a PE drainage pipe with a built-in installation joint, including an outer pipe and an inner pipe that is coaxially and slidably sleeved inside the outer pipe and extends to the outside of the outer pipe at one end. The extended end of the inner pipe is connected to an adjustable joint assembly through a flexible connecting section. The adjustable joint assembly includes a base tube communicating with the flexible connecting section. At least one set of radially nested sealing rings is coaxially arranged inside the base tube. The outermost sealing ring is fixedly connected to the inner wall of the base tube. Adjacent sealing rings are radially engaged and sealed through complementary annular grooves and ring structures. An installation tube is sealed and sleeved in the inner hole of the innermost sealing ring. The base tube is provided with a locking element for axially locking the installation tube.

[0005] Furthermore, the inner wall of the outer tube is provided with a plurality of circumferentially distributed sliding grooves along the axial direction, and the outer wall of the inner tube is fixed with a slider that slides in a sliding fit with each of the sliding grooves. In addition, the outer wall of the inner tube is provided with a plurality of O-rings at intervals along the axial direction, and the O-rings are in an interference fit with the inner wall of the outer tube.

[0006] Furthermore, the end of the outer tube is provided with an annular rotating groove, and the rotating ring is rotatably embedded in the annular rotating groove. One end of the ring extends coaxially to form an internal threaded sleeve. The outer wall of the internal threaded sleeve is provided with circumferentially distributed gripping protrusions, and its inner wall and the external thread provided on the outer wall of the inner tube form a threaded pair.

[0007] Furthermore, the flexible connecting section is composed of a flexible corrugated pipe, and the two ends of the flexible corrugated pipe are respectively sealed and fixedly connected to the extension end of the inner pipe and the base pipe through a flange assembly.

[0008] Furthermore, the locking component includes a plurality of threaded holes evenly distributed along the circumference of the base tube, each threaded hole being screwed with a locking bolt. The inner end of the locking bolt can abut against the outer wall of the mounting tube, and the outer end extends to the outside of the base tube and is fixed with a screwing handle.

[0009] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: the inner tube can slide axially and seal inside the outer tube, and with the flexible connecting section, the position of the adjustable joint assembly can be flexibly adjusted to achieve pipe connection at different positions in different occasions. Since the adjacent sealing rings achieve radial snap-fit ​​sealing through complementary annular grooves and snap ring structures, the radius of the sealing rings in the sealing ring group decreases from the outside to the inside. Thus, by controlling the number of sealing rings and cooperating with the installation pipe corresponding to the inner diameter of the innermost sealing ring, the adjustable joint assembly can be adapted to connect external pipes of different diameters. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the adjustable connector assembly of this utility model; Figure 3 This is a schematic diagram of the exploded structure of the outer and inner tubes of this utility model; Figure 4 This is a cross-sectional view of the outer and inner tubes of this utility model.

[0011] Figure label: 1. Outer tube; 101. Slide groove; 102. Annular rotating groove; 2. Inner tube; 201. Slider; 202. O-ring seal; 203. External thread; 3. Flexible connection section; 301. Flexible bellows; 302. Flange assembly; 4. Adjustable joint assembly; 401. Base tube; 402. Sealing ring assembly; 4021. Outermost sealing ring; 4022. Annular groove; 4023. Snap ring; 4024. Innermost sealing ring; 403. Mounting tube; 404. Locking element; 4041. Threaded hole; 4042. Locking bolt; 4043. Tightening handle; 5. Rotating ring; 501. Internal threaded sleeve; 502. Grip protrusion. Detailed Implementation

[0012] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0013] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0015] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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. Example

[0016] See attached document Figure 1-4 A PE drainage pipe with a built-in installation connector includes an outer pipe 1 and an inner pipe 2 coaxially and slidably fitted inside the outer pipe 1, with one end extending outside the outer pipe 1. The extended end of the inner pipe 2 is connected to an adjustable connector assembly 4 via a flexible connecting section 3. The adjustable connector assembly 4 includes a base pipe 401 connected to the flexible connecting section 3. At least one set of radially nested sealing rings 402 are coaxially arranged inside the base pipe 401. The outermost sealing ring 4021 is fixedly connected to the inner wall of the base pipe 401. Adjacent sealing rings are radially engaged and sealed through complementary annular grooves 4022 and retaining rings 4023. An installation pipe 403 is sealed and fitted inside the inner hole of the innermost sealing ring 4024. A locking member 404 is provided on the base pipe 401 for axially locking the installation pipe 403.

[0017] In this embodiment, the inner tube 2 can slide axially and sealably within the outer tube 1. Combined with the flexible connecting section 3, the position of the adjustable connector assembly 4 can be flexibly adjusted to achieve pipe connections at different positions in different situations. Since the adjacent sealing rings achieve radial snap-fit ​​sealing through the complementary annular groove 4022 and the snap ring 4023 structure, the radius of the sealing rings in the sealing ring group 402 decreases sequentially from the outside to the inside. Thus, by controlling the number of sealing rings and cooperating with the installation tube 403 corresponding to the inner diameter of the innermost sealing ring 4024, the adjustable connector assembly 4 can be adapted to connect external pipes of different diameters.

[0018] The inner wall of the outer tube 1 has multiple circumferentially distributed grooves 101 along the axial direction. The outer wall of the inner tube 2 is fixed with sliders 201 that slide in one-to-one with the grooves 101. The outer wall of the inner tube 2 is provided with multiple O-rings 202 at intervals along the axial direction. The O-rings 202 are press-fitted with the inner wall of the outer tube 1. The end of the outer tube 1 is provided with an annular rotating groove 102. The rotating ring 5 is rotatably embedded in the annular rotating groove 102, and one end of the rotating ring 5 extends coaxially to form an internal threaded sleeve 501. The outer wall of the internal threaded sleeve 501 is provided with circumferentially distributed gripping protrusions 502. The inner wall of the internal threaded sleeve 501 and the external thread 203 provided on the outer wall of the inner tube 2 form a threaded pair.

[0019] In this embodiment, the rotating ring 5 and the annular rotating groove 102 can rotate to drive the inner threaded sleeve 501 to rotate. Then, with the threaded connection between the inner threaded sleeve 501 and the outer thread 203 of the inner tube 2, the inner tube 2 can be driven to slide circumferentially with the slider 201 and the sliding connection in the groove 101. The inner tube 2 can also achieve an interference seal with the inner wall of the outer tube 1 through the O-ring 202.

[0020] The flexible connecting section 3 is composed of a flexible corrugated pipe 301. The two ends of the flexible corrugated pipe 301 are respectively sealed and fixedly connected to the extension end of the inner pipe 2 and the base pipe 401 through the flange assembly 302.

[0021] In this embodiment, the flexible corrugated pipe 301 can not only adjust the angle position of the adjustable joint assembly 4, but also make adaptive adjustments when the pipe expands or contracts, thereby avoiding pipe rupture.

[0022] The locking member 404 includes a plurality of threaded holes 4041 evenly distributed around the base tube 401. Each threaded hole 4041 is screwed with a locking bolt 4042. The inner end of the locking bolt 4042 can abut against the outer wall of the mounting tube 403, and the outer end extends to the outside of the base tube 401 and is fixed with a screwing handle 4043.

[0023] By holding and turning the handle 4043, the locking bolt 4042 will be driven to move spirally through the corresponding threaded hole 4041 until the inner end of the locking bolt 4042 presses against the outer wall of the mounting tube 403, thus locking the mounting tube 403.

[0024] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0025] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art.

Claims

1. A PE drainage pipe with a built-in installation connector, characterized in that: It includes an outer tube (1) and an inner tube (2) that is coaxially sealed and slidably sleeved inside the outer tube (1) and extends to the outside of the outer tube (1) at one end. The extended end of the inner tube (2) is connected to an adjustable connector assembly (4) through a flexible connecting section (3). The adjustable connector assembly (4) includes a base tube (401) communicating with the flexible connecting section (3). At least one set of radially nested sealing rings (402) are coaxially arranged inside the base tube (401). The outermost sealing ring (4021) is fixedly connected to the inner wall of the base tube (401). Adjacent sealing rings are radially snapped and sealed by complementary annular grooves (4022) and snap rings (4023). An installation tube (403) is sealed and sleeved in the inner hole of the innermost sealing ring (4024). The base tube (401) is provided with a locking member (404) for axially locking the installation tube (403).

2. The PE drainage pipe with integrated installation joint according to claim 1, characterized in that: The inner wall of the outer tube (1) is provided with a plurality of circumferentially distributed sliding grooves (101) along the axial direction. The outer wall of the inner tube (2) is fixed with a slider (201) that slides in a sliding fit with the sliding grooves (101). The outer wall of the inner tube (2) is provided with a plurality of O-rings (202) at intervals along the axial direction. The O-rings (202) are in an interference fit with the inner wall of the outer tube (1).

3. A PE drainage pipe with a built-in installation joint according to claim 2, characterized in that: The outer tube (1) has an annular rotating groove (102) at its end. The rotating ring (5) is rotatably embedded in the annular rotating groove (102), and one end of the ring extends coaxially to form an internal thread sleeve (501). The outer wall of the internal thread sleeve (501) is provided with circumferentially distributed gripping protrusions (502), and its inner wall and the external thread (203) provided on the outer wall of the inner tube (2) form a thread pair.

4. A PE drainage pipe with a built-in installation joint according to claim 1, characterized in that: The flexible connecting section (3) is composed of a flexible corrugated pipe (301), and the two ends of the flexible corrugated pipe (301) are respectively sealed and fixedly connected to the extension end of the inner pipe (2) and the base pipe (401) through the flange assembly (302).

5. A PE drainage pipe with a built-in installation joint according to claim 1, characterized in that: The locking component (404) includes a plurality of threaded holes (4041) evenly distributed around the base tube (401). Each threaded hole (4041) is screwed with a locking bolt (4042). The inner end of the locking bolt (4042) can abut against the outer wall of the mounting tube (403), and the outer end extends to the outside of the base tube (401) and is fixed with a screwing handle (4043).

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