A hard pipe joint

Abstract

The utility model discloses a kind of hard pipe joints, including primary connecting piece, secondary connecting piece, fixed part, the primary connecting piece includes at least two identical end structures, one end of the secondary connecting piece is connected with primary connecting piece, the other end of the secondary connecting piece is connected with fixed part, connecting sleeve is equipped between the end structure and pipeline, the end surface of the end structure and secondary connecting piece contact is equipped with first sealing element. The utility model is simple in construction, is suitable for the pipe connection of fixed length, any length is connected conveniently, and the pipeline of different pipe material, thickness and length is adapted. Pipeline is circularly cut, perforated or processed or concave shape, can be connected pipeline, reduce on-site square construction difficulty. It is simple and fast to assemble, after joint sealing aging, it can be conveniently replaced to reconnect pipeline, and compared with metal joint replacement cost is low.

Description

Technical Field

[0001] This utility model relates to the field of mechanical connectors, and in particular to a rigid pipe connector. Background Technology

[0002] Rigid pipe fittings can be classified into threaded fittings, flange fittings, and butt-welded fittings according to their connection methods. Threaded fittings are a type of threaded pipe connection that is widely used in industrial and domestic fields. Their main function is to simplify the pipe connection process and reduce maintenance costs. They are characterized by high strength, good ductility, and convenient connection.

[0003] Traditional pipe fittings rely on fixed lengths for connection between pipes, and different pipe specifications cannot be matched with the same type of pipe fitting. Metal fittings require hydraulic treatment of the pipe, which makes on-site construction complex and difficult, and their maintenance and replacement costs are also relatively high. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model proposes a rigid pipe connector that offers reliable connection, good sealing, and convenient and quick assembly and disassembly.

[0005] The technical solution of this utility model is as follows: a rigid pipe connector, which is a plastic connector, including a primary connector, a secondary connector, and a fixing member. The primary connector includes at least two identical end structures. One end of the secondary connector is connected to the primary connector, and the other end of the secondary connector is connected to the fixing member. A connecting sleeve is provided between the end structure and the pipe. A first sealing member is provided on the end face of the end structure that contacts the secondary connector.

[0006] By using primary and secondary connectors, along with connecting sleeves that snap onto the pipe and multiple sealing rings, a multi-level sealing effect is achieved at the pipe joints, preventing the sealing effect from decreasing after repeated disassembly and assembly. The primary and secondary connectors are connected by threads, making disassembly and assembly convenient and quick.

[0007] In one embodiment, the inner annular surface of the end structure that contacts the pipe is provided with a first annular sealing gasket groove, the pipe is provided with a concave snap-fit ​​portion, and the connecting sleeve is installed in the space formed by the snap-fit ​​portion on the pipe and the first annular sealing gasket groove.

[0008] In one embodiment, the end structure is provided with a second annular sealing gasket groove, the second annular sealing gasket groove being located on the end face of the end structure that contacts the secondary connector, and the first seal is installed in the second annular sealing gasket groove.

[0009] In one embodiment, the secondary connector has a first connecting part and a second connecting part, the first connecting part being threadedly connected to the primary connector, and the second connecting part being threadedly connected to the fixing part.

[0010] In one embodiment, the fastener has a connecting cavity, and the secondary connector is placed in the connecting cavity and threadedly connected to the fastener via a second connecting portion.

[0011] In one embodiment, a second seal is provided between the secondary connector and the fixing member.

[0012] In one embodiment, the primary connector is provided with a toothed ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this invention, a connecting sleeve is provided between the primary connector and the pipe. The connecting sleeve is snapped onto the pipe near the connection point, providing a first-level seal for the pipe. A sealing ring is provided on the end face of the primary connector that contacts the secondary connector, providing a second-level seal. A sealing ring is provided between the secondary connector and the fixing component, providing a third-level seal.

[0015] This utility model is simple to construct and applicable to pipe connections without a fixed length, facilitating connections of any length and adapting to pipes of different materials, thicknesses, and lengths. Pipes can be connected simply by circumferential cutting, drilling, machining, or recessing, reducing on-site construction difficulty. Assembly is simple and quick, and the joint seal can be easily replaced and reconnected after aging. Compared to other joints (stainless steel and metal joints are expensive and difficult to form, requiring hydraulic forming before installation), this design is simple in structure, low in cost, and low in replacement cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is an exploded view of the structure of Embodiment 1 of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of this utility model.

[0020] In the diagram: 1. Primary connector, 2. Secondary connector, 3. End structure, 4. First connecting part, 5. Second connecting part, 6. First annular sealing gasket groove, 7. Second annular sealing gasket groove, 8. Snap-fit ​​part, 9. Connecting sleeve, 10. Primary sealing ring, 11. Secondary sealing ring, 12. Fixing component, 13. Connecting cavity, 14. Toothed ring, 15. Pipe, 16. Bending part. Detailed Implementation

[0021] 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.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Example 1:

[0024] like Figures 1 to 2 As shown, this embodiment discloses a high-strength plastic rigid pipe joint, which is installed at the connection of two collinear pipe sections 15. Before installation, the pipe sections 15 to be connected must be circumferentially cut or ground to keep the pipe end face formed after cutting or processing flat. Then, according to the sleeve depth (length) designed for the rigid pipe joint, two through holes are drilled on the pipe 15 or a suitable concave shape is processed on the outer wall of the pipe (usually circular and for thick pipes that do not require through holes) to facilitate the installation of protruding clamps, connecting sleeves or sealing rings.

[0025] In this embodiment, before installation, a recessed snap-fit ​​portion 8 is made near the connection on the pipe 15.

[0026] The rigid pipe joint includes a primary connector 1 and a secondary connector 2. The primary connector 1 is fitted onto the connection between two pipe sections 15. The primary connector 1 includes two identical end structures 3. The secondary connector 2 includes a first connecting part 4 and a second connecting part 5. The end structure 3 is threadedly connected to the first connecting part 4 of the secondary connector 2. The end structure 3 includes a first annular sealing gasket groove 6 and a second annular sealing gasket groove 7. The first annular sealing gasket groove 6 is located on the inner annular surface of the primary connector 1 in contact with the pipe 15. The position of the first annular sealing gasket groove 6 corresponds to the position of the snap-fit ​​part 8. A connecting sleeve 9 is provided in the space formed by the first annular sealing gasket groove 6 and the snap-fit ​​part 8 on the pipe 15. The connecting sleeve 9 provides the first sealing function for the pipe 15.

[0027] The rigid pipe joint in this embodiment is a high-strength plastic joint. Compared with other joints (stainless steel and metal are expensive and difficult to form, and the pipe needs to be hydraulically formed before installation), it has a simple structure, low cost, and low replacement cost.

[0028] The second annular sealing gasket groove 7 is located on the end face where the primary connector 1 and the secondary connector 2 contact. A primary sealing ring 10 is provided in the second annular sealing gasket groove 7, and the primary sealing ring 10 plays a secondary sealing role.

[0029] In this embodiment, the second connecting part 5 of the secondary connector 2 is threadedly connected to the fixing member 12.

[0030] Furthermore, the fastener 12 is sleeved on the pipe 15, and the fastener 12 is provided with a connecting cavity 13. The secondary connector 2 is placed in the connecting cavity 13 through the second connecting part 5 and is threadedly connected to the fastener 12.

[0031] In this embodiment, a secondary sealing ring 11 is provided between the secondary connector 2 and the fixing member 12, and the secondary sealing ring 11 plays a third sealing role.

[0032] In this embodiment, the primary connector 1 is provided with a toothed ring 14, which facilitates the disassembly of the primary connector 1.

[0033] This invention provides a multi-level sealing effect at the pipe connection by using a primary connector 1 and a secondary connector 2, along with a connecting sleeve 9 that snaps onto the pipe 15 and multiple sealing rings, thus preventing a decrease in sealing performance after repeated disassembly and assembly. The primary and secondary connectors are connected by threads, making disassembly and assembly convenient and quick.

[0034] Example 2:

[0035] like Figure 3As shown, the rigid pipe connector in this embodiment is L-shaped, with a bend 16 between the two end structures 3. This shape of rigid pipe connector can change the flow path of the connecting pipe 15 and is suitable for different working scenarios.

[0036] The rest is the same as in Example 1.

[0037] Example 3:

[0038] like Figure 4 As shown, the rigid pipe connector in this embodiment includes three end structures 3, which form a T-shape and can connect three pipe sections 15 to form a tee pipe.

[0039] The rest is the same as in Example 1.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rigid pipe connector, characterized in that: The rigid pipe joint is a plastic joint, including a primary connector (1), a secondary connector (2), and a fixing member (12). The primary connector (1) includes at least two identical end structures (3). One end of the secondary connector (2) is connected to the primary connector (1), and the other end of the secondary connector (2) is connected to the fixing member (12). A connecting sleeve (9) is provided between the end structure (3) and the pipe (15). A first sealing member is provided on the end face of the end structure (3) that contacts the secondary connector (2).

2. The rigid pipe connector according to claim 1, characterized in that: The inner ring surface of the end structure (3) that contacts the pipe (15) is provided with a first annular sealing gasket groove (6), and the pipe (15) is provided with a concave snap-fit ​​part (8). The connecting sleeve (9) is installed in the space formed by the snap-fit ​​part (8) on the pipe (15) and the first annular sealing gasket groove (6).

3. The rigid pipe connector according to claim 1 or 2, characterized in that: The end structure (3) is provided with a second annular sealing gasket groove (7), the second annular sealing gasket groove (7) is located on the end face of the end structure (3) that contacts the secondary connector (2), and the first seal is installed in the second annular sealing gasket groove (7).

4. The rigid pipe connector according to claim 1, characterized in that: The secondary connector (2) is provided with a first connecting part (4) and a second connecting part (5). The first connecting part (4) is threadedly connected to the primary connector (1), and the second connecting part (5) is threadedly connected to the fixing part (12).

5. The rigid pipe connector according to claim 4, characterized in that: The fixing member (12) is provided with a connecting cavity (13), and the secondary connecting member (2) is placed in the connecting cavity (13) and threadedly connected to the fixing member (12) through the second connecting part (5).

6. The rigid pipe connector according to claim 4, characterized in that: A second sealing element is provided between the secondary connector (2) and the fixing element (12).

7. The rigid pipe connector according to claim 1, characterized in that: The primary connector (1) is provided with a toothed ring (14).

Images