Interconnection structure of plastic pipes

Abstract

This utility model relates to the field of well drilling pipe technology, specifically to a structure for interconnecting plastic pipes, including pipe bodies. Annular grooves are formed on the outer walls of two sets of pipe bodies near the pipe ends. The pipe ends of the two sets of pipe bodies are inserted into the two ends of a sleeve, and corresponding annular grooves are also formed on the inner wall of the sleeve at positions corresponding to the annular grooves on the pipe bodies. The annular grooves on the sleeve and the corresponding annular grooves on the pipe bodies are aligned to form an annular cavity. A locking strip, a flexible strip, is inserted into the annular cavity. The flexible strip's deformation capability fills the annular cavity, providing continuous clamping force and achieving a self-locking function. It is easy to install, low in cost, has no metal parts, and is highly corrosion-resistant.

Description

Technical Field

[0001] This utility model relates to the field of well drilling pipe technology, specifically to the interconnection structure of plastic pipes. Background Technology

[0002] Plastic well casings have become the mainstream alternative to traditional metal well casings due to their advantages such as corrosion resistance, lightweight, economy, and environmental friendliness.

[0003] Currently, the connection methods used for plastic well casings include socket bonding, thermofusion bonding, threaded connections, and flange connections. Socket bonding requires the use of adhesive, which is prone to aging and failure, and is difficult to install in low-temperature / humid environments, requiring a curing time; thermofusion bonding requires specialized equipment, is non-disassembly, and has high requirements for the operating environment (needs to be clean / flat); threaded connections are difficult to process with large-diameter threads and have poor vibration resistance; flange connections are costly, complex to install, the bolts are prone to corrosion, and they are heavy.

[0004] A novel interconnected structure for plastic pipes is designed, which requires no glue / hot melt equipment, is detachable, and has strong vibration resistance. Utility Model Content

[0005] (a) Technical issues

[0006] This invention aims to at least address the needs for low-cost, easy-to-operate, and sufficiently stable pipe connections.

[0007] (II) Technical Content

[0008] This solution provides an interconnection structure for plastic pipes, achieved through the following specific technical means: including...

[0009] The pipe body has an annular groove on the outer wall of both sets of pipe bodies near the pipe head;

[0010] The sleeve has two sets of tube heads that are fitted and inserted into the sleeve from the two ends. A corresponding annular groove is also provided on the inner wall of the sleeve at the position of the annular groove on the tube body. The annular groove on the sleeve and the corresponding annular groove on the tube body are aligned to form an annular cavity.

[0011] Locking strips are inserted into the annular cavity.

[0012] Preferred technical solution 1: A window with a connecting annular groove is provided on the outer wall of the sleeve for the locking strip to be fed into the annular cavity.

[0013] Preferred technical solution 2: The length of the locking strip is not less than the circumference of the annular cavity. When the length is long, the tail end of the locking strip can still be exposed from the window after filling the annular cavity.

[0014] Preferred technical solution 3: The tube body and the tube sleeve are both made of plastic; the locking strip is made of tough plastic.

[0015] Preferred technical solution four: An annular ridge is formed in the middle of the inner wall of the sleeve, and the end faces of the two sets of tubes respectively contact the two sides of the annular ridge.

[0016] (III) Technical Effects

[0017] The above structure gives this solution the following advantages:

[0018] 1. Double annular groove locking mechanism: The annular grooves of the sleeve and the pipe body are aligned to form a geometric limit and prevent axial displacement.

[0019] 2. Elastic fixing of the flexible strip: The deformation capacity of the flexible strip is used to fill the annular cavity, providing continuous clamping force and realizing the self-locking function;

[0020] 3. Window-based operation: The pre-reserved window on the pipe sleeve simplifies the installation of the toughness strip, balancing operational convenience with structural integrity. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0023] Figure 2 This is a longitudinal sectional view of the plan;

[0024] Figure 3 This is a cross-sectional view of the scheme.

[0025] Figure 4 This is an exploded view of the sleeve and pipe body in this design;

[0026] Figure 5 This is an exploded view of the annular cavity and locking strip in this design;

[0027] Figure 6 This is a schematic diagram of the pipe sleeve structure in this scheme.

[0028] Among them, 1. Pipe body, 2. Pipe sleeve, 3. Window, 4. Locking strip, 5. Annular groove, 6. Annular protrusion. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 The interconnected structure of the pipe bodies 1 includes pipe body 1, pipe sleeve 2, and locking strip 4, wherein:

[0031] Annular grooves 5 are provided on the outer walls of the two sets of tube bodies 1 near the tube heads. The tube heads of the two sets of tube bodies 1 are inserted into the two ends of the sleeve 2. Corresponding annular grooves 5 are also provided on the inner wall of the sleeve 2 at the position of the annular grooves 5 on each set of tube bodies 1. The annular grooves 5 on the sleeve and the corresponding annular grooves 5 on the tube body 1 are aligned to form an annular cavity. The locking strip 4 is a tough strip and is filled in the annular cavity.

[0032] The pipe body 1 and pipe sleeve 2 are made of plastic, and the inner diameter of the pipe sleeve 2 is compatible with the outer diameter of the pipe body 1; the locking strip 4 is also made of non-metallic material, which can be a tough plastic material; there are no metal parts, it is highly corrosion resistant, and it is suitable for acidic / alkaline water or highly mineralized groundwater; the material cost is low (pipe body, pipe sleeve + tough strip), there is no glue pollution or heat fusion energy consumption, and it meets environmental protection requirements.

[0033] In one set of embodiments

[0034] Please see Figures 1-6 A window 3 is provided on the outer wall of the sleeve 2 to connect to the annular groove 5, so that the locking strip 4 can be inserted into the annular cavity (the cross-sectional size of the locking strip 4 is adapted to the cross-sectional size of the annular cavity). The installation is convenient and does not require glue curing time or hot melt equipment. It only requires inserting the sleeve 2 and fixing the tough strip, which is suitable for rapid construction in the field.

[0035] Furthermore, the length of the locking strip 4 is not less than the circumference of the annular cavity. If the front end of the locking strip 4 extends into the annular cavity from the window 3 and fills the annular cavity, the tail end can still protrude from the window 3. When disassembly is required, the locking strip 4 can be pulled out directly to release the locking state between the sleeve 2 and the pipe body 1. It can be repeatedly disassembled and reassembled (the flexible strip can be replaced). It is suitable for occasions that require maintenance (such as irrigation systems).

[0036] In one set of embodiments

[0037] Please see Figure 2 , Figure 6 An annular rib 6 is formed in the middle of the inner wall of the sleeve 2, and the end faces of the two sets of tube bodies 1 are in contact with the two sides of the annular rib 6 respectively.

[0038] The annular rib 6 can limit the depth of the tube body 1 inserted into the tube sleeve 2, thereby ensuring that the annular groove 5 on the tube body 1 can be aligned with the annular groove 5 on the tube sleeve 2.

[0039] During use, this solution requires daily maintenance of each component according to the established maintenance plan to ensure its working condition.

[0040] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0041] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for connecting plastic pipes to each other, characterized by: include Pipe body (1), annular grooves (5) are provided on the outer wall of the two sets of pipe bodies (1) near the pipe head; The tube sleeve (2) has two sets of tube bodies (1) inserted from the two ends of the tube sleeve (2), and a corresponding annular groove (5) is also opened on the inner wall of the tube sleeve (2) at the position of the annular groove (5) on the tube body (1). The annular groove (5) on the tube sleeve (2) and the corresponding annular groove (5) on the tube body (1) are aligned to form an annular cavity. The locking strip (4) is a tough strip that is filled in the annular cavity.

2. The plastic pipe joint structure according to claim 1, characterized by: A window (3) is provided on the outer wall of the sleeve (2) to connect the annular groove (5) for the locking strip (4) to be inserted into the annular cavity.

3. The plastic pipe joint structure according to claim 2, characterized by: The length of the locking bar (4) is not less than the circumference of the annular cavity.

4. The plastic pipe joint structure according to claim 1, characterized by: The cross-sectional dimensions of the locking strip (4) are adapted to the cross-sectional dimensions of the annular cavity.

5. The plastic pipe joint structure according to any one of claims 1 to 4, characterized by: Both the tube body (1) and the sleeve (2) are made of plastic.

6. The plastic pipe joint structure according to claim 5, characterized by: The locking strip (4) is made of non-metallic material.

7. The interconnection structure of plastic pipes according to claim 2, characterized in that: An annular rib (6) is formed in the middle of the inner wall of the sleeve (2), and the end faces of the two sets of tubes (1) respectively contact the two sides of the annular rib (6).

Images