Leak-proof glass reinforced plastic pipe

Abstract

This utility model discloses a leak-proof fiberglass pipe, belonging to the field of pipeline engineering technology. The device includes a first fiberglass pipe and a second fiberglass pipe, with a first connecting port and a second connecting port at each end of the two pipes, respectively, allowing them to be inserted into each other. A first connecting ring and a second connecting ring are fixed to the outer walls of the pipes, and a sealing ring and a sealing gasket are provided between the connecting ports. The core of the device is a lever-type fixing mechanism, which includes a pull rod and a push rod. One end of the pull rod is rotatably connected to the first connecting ring via a first rotating shaft, and one end of the push rod is rotatably connected to the second connecting ring via a second rotating shaft. This utility model utilizes this lever mechanism to generate a strong and stable axial tensile force, forcibly completing the pipe connection and fully compressing the sealing element. It solves the problems of laborious, inefficient, and unreliable sealing in existing technologies for connecting large-diameter pipes, and has the advantages of simple structure, labor-saving operation, strong connection, and good sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering technology, and in particular to a leak-proof fiberglass pipe. Background Technology

[0002] Fiberglass reinforced plastic (FRP) pipes are widely used in municipal water supply and drainage, chemical engineering, and marine engineering due to their excellent corrosion resistance, high strength, and lightweight properties. In pipe laying, socket connection is a common and efficient method. It typically relies on the interference fit between a rubber sealing ring inside the socket and the inserted spigot to achieve a seal between the pipes.

[0003] For small-diameter pipes, the required insertion force is not large, and docking can usually be completed manually or with the assistance of a simple pry bar. However, with the expansion of pipe applications, the use of large-diameter FRP pipes is becoming increasingly common. When the pipe diameter increases, in order to ensure the reliability of the seal, the size of the sealing ring and the radial compression must also increase accordingly. This results in the need to overcome enormous friction and the squeezing force of the sealing ring when inserting the spigot into the socket, and the required axial insertion force increases exponentially.

[0004] In such situations, relying solely on manual labor is insufficient for connection, often necessitating the use of heavy machinery like excavators for brute force pushing at construction sites. This method not only makes it difficult to precisely control the magnitude and direction of the pushing force, easily leading to damage to the pipe ends or sealing rings due to uneven force distribution, but also poses a high operational risk. More importantly, unstable external forces often result in insufficient insertion depth of the spigot or twisting and overturning of the sealing ring within the groove, failing to form a uniform and effective seal. This leaves serious leakage risks for the entire pipeline system, affecting project quality and long-term operational safety.

[0005] Therefore, this utility model proposes a leak-proof fiberglass pipe to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a leak-proof fiberglass pipe, which aims to improve the problems in the existing technology where the fiberglass pipe connection device is difficult to connect manually due to the huge axial insertion force required when connecting large-diameter pipes, resulting in low construction efficiency and difficulty in ensuring proper connection and sealing reliability.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a leak-proof fiberglass pipe, comprising: a first fiberglass pipe, a second fiberglass pipe, a first connecting port, a second connecting port, a first connecting ring, and a second connecting ring; and a fixing mechanism, wherein the fixing mechanism comprises a pull rod and a push rod; The first fiberglass pipe is fixedly connected to the first connection port at its end, and the second fiberglass pipe is fixedly connected to the second connection port at its end, and the second connection port can be inserted into the first connection port. Furthermore, the first connecting ring is annularly sleeved and fixed to the outer wall of the second fiberglass tube, and is adjacent to the second connection port along its axial direction; the second connecting ring is annularly sleeved and fixed to the outer wall of the first fiberglass tube, and is adjacent to the first connection port along its axial direction; one end of the pull rod is rotatably connected to the first connecting ring through a first rotating shaft, one end of the top rod is rotatably connected to the second connecting ring through a second rotating shaft, and the other end of the pull rod is detachably hooked to the top rod.

[0008] Preferably, a sealing groove is formed on the inner wall of the first connection port along its circumference, and the device further includes a sealing ring, which is installed in the sealing groove.

[0009] Preferably, the device further includes a sealing gasket, which is annularly sleeved on the outer peripheral wall of the second connection port and located between the end of the second connection port and the first connecting ring.

[0010] Preferably, at least one first mounting notch is provided on the outer wall of the first connecting ring, and the first rotating shaft is rotatably mounted in the first mounting notch.

[0011] Preferably, at least one second mounting notch is provided on the outer wall of the second connecting ring, and the second rotating shaft is rotatably mounted in the second mounting notch.

[0012] Preferably, the end of the pull rod away from the first rotating shaft is integrally formed or fixedly connected to a hook.

[0013] Preferably, in conjunction with the aforementioned hook, a hooking part adapted to the hook is provided on the rod body of the top rod.

[0014] Preferably, the axis of the first rotating shaft and the axis of the second rotating shaft are both perpendicular to the axes of the first fiberglass pipe and the second fiberglass pipe.

[0015] This utility model has the following beneficial effects: 1. In this utility model, a lever-type fixing mechanism consisting of a pull rod and a push rod is set. This fixing mechanism is rotatably connected to the connecting rings that are respectively fixed on the two pipe sections. By using the lever principle to amplify the operating force, the problem of relying solely on manual pushing and pulling when connecting large-diameter pipes in the prior art, which is time-consuming, labor-intensive, and has low construction efficiency, is solved. This achieves the technical effect of saving labor, quickly completing the pipe connection, and significantly improving construction efficiency.

[0016] 2. In this utility model, a strong and stable axial tensile force is generated by a fixing mechanism to force the spigot into the socket. This, along with the sealing ring set in the sealing groove on the inner wall of the connection port and the sealing gasket fitted on the outer wall of the spigot, forms a double sealing structure. This solves the problem in the prior art where insufficient or uneven axial force applied manually leads to incomplete pipe connection, insufficient compression of the sealing element, unreliable sealing, and easy leakage risk. This achieves a firm connection, uniform force on the sealing element, and sufficient compression, thereby obtaining a highly reliable sealing effect and effectively preventing leakage.

[0017] 3. In this utility model, by designing the fixing mechanism as a simple structure in which the tie rod and the top rod are detachably connected by the pivot and the hook, the problem of complex structure, inconvenient installation and operation of some existing auxiliary connection tools is solved. It achieves the technical effect of simple overall structure, intuitive and convenient operation, easy to install and disassemble on the construction site, and convenient for construction personnel to use. Attached Figure Description

[0018] Figure 1 This is a perspective view of a leak-proof fiberglass pipe proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a fixing component for a leak-proof fiberglass pipe proposed in this utility model; Figure 3 This is a top view of a fixing component for a leak-proof fiberglass pipe proposed in this utility model; Figure 4 This is a schematic diagram of the internal structure of the connection port of a leak-proof fiberglass pipe proposed in this utility model. Legend: 1. First fiberglass tube; 2. Fixing mechanism; 201. First rotating shaft; 202. Pull rod; 203. Second rotating shaft; 204. Top rod; 3. Second fiberglass tube; 4. First connecting ring; 5. Second connecting ring; 6. Sealing ring; 7. Sealing gasket; 8. Sealing groove; 9. First connection port; 10. Second connection port. Detailed Implementation

[0019] 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.

[0020] Reference Figures 1-4This utility model provides a leak-proof fiberglass pipe, which aims to solve the structural defects in the prior art, such as incomplete connection or unreliable sealing, when large-diameter pipes are connected by plug-in joints because it is difficult for manpower to provide a stable and sufficient axial thrust.

[0021] The fiberglass pipe connecting device includes a first fiberglass pipe 1 and a second fiberglass pipe 3 that is inserted into and fitted with the first fiberglass pipe 1; a first connecting port 9 serving as a socket is fixedly connected to the end of the first fiberglass pipe 1; a second connecting port 10 serving as a plug is fixedly connected to the end of the second fiberglass pipe 3, and the second connecting port 10 is inserted into and fitted inside the first connecting port 9; a first connecting ring 4 is annularly sleeved and fixedly connected to the outer wall of the second fiberglass pipe 3, and the first connecting ring 4 is arranged along the axial direction of the second fiberglass pipe 3 adjacent to the second connecting port 10; a second connecting ring 5 is annularly sleeved and fixedly connected to the outer wall of the first fiberglass pipe 1, and the second connecting ring 5 is arranged along the axial direction of the first fiberglass pipe 1 adjacent to the first connecting port 9; The fiberglass pipe connecting device also includes a fixing mechanism 2, which includes a pull rod 202 and a top rod 204; one end of the pull rod 202 is rotatably connected to the first connecting ring 4 via a first rotating shaft 201; one end of the top rod 204 is rotatably connected to the second connecting ring 5 via a second rotating shaft 203; the other end of the pull rod 202 is detachably hooked and connected to the top rod 204. Specifically, at least one first mounting notch is provided on the outer wall of the first connecting ring 4, and the first rotating shaft 201 is rotatably installed in the first mounting notch; at least one second mounting notch is provided on the outer wall of the second connecting ring 5, and the second rotating shaft 203 is rotatably installed in the second mounting notch, and the axis of the first rotating shaft 201 and the axis of the second rotating shaft 203 are both perpendicular to the axis of the first fiberglass pipe 1 and the second fiberglass pipe 3; in order to realize the hook connection, a hook is integrally formed or fixedly connected to the end of the pull rod 202 away from the first rotating shaft 201, and a hooking part adapted to the hook is provided on the rod body of the top rod 204.

[0022] A sealing groove 8 is formed on the inner wall of the first connection port 9 along its circumference, and a sealing ring 6 is installed in the sealing groove 8. The outer diameter of the sealing ring 6 in its natural state is slightly larger than the bottom diameter of the sealing groove 8, and the inner diameter is slightly smaller than the outer diameter of the second connection port 10, so that it can be stably accommodated in the sealing groove 8 after installation. The fiberglass pipe connecting device also includes a sealing gasket 7, which is an annular structure and is fitted on the outer peripheral wall of the second connecting port 10. Along the axial direction of the second connecting port 10, the sealing gasket 7 is positioned between the end of the second connecting port 10 and the first connecting ring 4. In the assembled state, when the fixing mechanism 2 drives the second connection port 10 to be inserted into the first connection port 9, the outer wall of the second connection port 10 first contacts and radially compresses the sealing ring 6 located in the sealing groove 8, so that the sealing ring 6 is tightly fitted to the outer wall of the second connection port 10 and the bottom and side wall of the sealing groove 8, forming the first main seal; at the same time, the sealing gasket 7 sleeved on the outer wall of the second connection port 10 is brought into the inner cavity of the first connection port 9 and is squeezed between the inner wall of the first connection port 9 and the outer wall of the second connection port 10, forming the second auxiliary seal; this double sealing structure formed by the sealing ring 6 and the sealing groove 8 and the sealing gasket 7 ensures that the connection part can obtain extremely high air tightness and liquid tightness under the strong axial pressure applied by the fixing mechanism 2, effectively preventing media leakage.

[0023] In a preferred embodiment, in order to provide a stable and reliable rotating connection base for the fixing mechanism 2, at least one first mounting notch is provided on the outer wall of the first connecting ring 4, and the first rotating shaft 201 is rotatably mounted in the first mounting notch; similarly, at least one second mounting notch is provided on the outer wall of the second connecting ring 5, and the second rotating shaft 203 is rotatably mounted in the second mounting notch.

[0024] As another preferred embodiment, in order to achieve a quick and secure detachable connection between the pull rod 202 and the top rod 204, a hook is integrally formed or fixedly connected to one end of the pull rod 202 away from the first pivot 201. Correspondingly, a hooking part adapted to the hook is provided on the rod body of the top rod 204. The hooking part can be a horizontal pin or a groove structure.

[0025] In another preferred embodiment, in order to ensure that the fixing mechanism 2 can efficiently convert the force into a tensile force along the pipe axis during operation, the axis of the first rotating shaft 201 and the axis of the second rotating shaft 203 are both perpendicular to the central axis of the first fiberglass pipe 1 and the second fiberglass pipe 3.

[0026] Working principle: During pipeline connection construction, firstly, the first fiberglass pipe 1 and the second fiberglass pipe 3 are laid in the predetermined position, and the second connection port 10 is aligned with the first connection port 9; the sealing gasket 7 is placed on the outer wall of the second connection port 10, while ensuring that the sealing ring 6 is placed in the sealing groove 8 on the inner wall of the first connection port 9; then the fixing mechanism 2 is installed in place, so that the pull rod 202 is rotatably connected to the first connecting ring 4 through the first rotating shaft 201, and the top rod 204 is rotatably connected to the second connecting ring 5 through the second rotating shaft 203, and the hook at the end of the pull rod 202 away from the first rotating shaft 201 is detachably hooked and connected to the hooking part of the top rod 204.

[0027] The operator presses the top rod 204 toward the first connection port 9 and the second connection port 10. Since the pull rod 202 and the top rod 204 form a lever structure, the pressing force is converted into a strong axial force to pull the first connecting ring 4 and the second connecting ring 5 closer together through the rotational connection of the first rotating shaft 201 and the second rotating shaft 203. Since the first connecting ring 4 is fixedly connected to the second fiberglass tube 3 and the second connecting ring 5 is fixedly connected to the first fiberglass tube 1, the axial force directly drives the second fiberglass tube 3 and the second connection port 10 at its end to smoothly and forcefully insert into the first connection port 9 of the first fiberglass tube 1.

[0028] During the insertion of the second connection port 10, its outer wall radially compresses the sealing ring 6 in the sealing groove 8, causing the sealing ring 6 to tightly hug the outer periphery of the second connection port 10. At the same time, the sealing gasket 7 is also squeezed between the inner wall of the first connection port 9 and the outer wall of the second connection port 10, thereby forming a reliable double seal. Through the synergistic effect of the fixing mechanism 2, this utility model solves the problems of insufficient force, incomplete connection, and unreliable sealing caused by purely manual connection in the prior art, and realizes labor-saving, fast and high-quality pipe connection.

Claims

1. A leak-proof fiberglass pipe, comprising: The first fiberglass pipe (1) has a first connection port (9) fixedly connected to its end as a socket. The second fiberglass pipe (3) has a second connector (10) fixedly connected to its end, which can be inserted into the interior of the first connector (9). The first connecting ring (4) is circumferentially sleeved and fixedly connected to the outer wall of the second fiberglass pipe (3), and is arranged adjacent to the second connecting port (10) along the axial direction of the second fiberglass pipe (3). The second connecting ring (5) is circumferentially sleeved and fixedly connected to the outer wall of the first fiberglass pipe (1), and is arranged along the axial direction of the first fiberglass pipe (1) adjacent to the first connecting port (9). Its features are, The fiberglass pipe connecting device also includes a fixing mechanism (2), which includes a pull rod (202) and a push rod (204); One end of the pull rod (202) is rotatably connected to the first connecting ring (4) via a first rotating shaft (201); One end of the top rod (204) is rotatably connected to the second connecting ring (5) via a second rotating shaft (203); The other end of the pull rod (202) is detachably hooked to the top rod (204).

2. The leak-proof fiberglass pipe according to claim 1, characterized in that: A sealing groove (8) is formed on the inner wall of the first connection port (9) along its circumference. The device also includes a sealing ring (6), which is installed in the sealing groove (8).

3. The leak-proof fiberglass pipe according to claim 2, characterized in that: The device further includes a sealing gasket (7), which is annularly sleeved on the outer peripheral wall of the second connection port (10) and located between the end of the second connection port (10) and the first connecting ring (4).

4. The leak-proof fiberglass pipe according to claim 1, characterized in that: At least one first mounting notch is provided on the outer wall of the first connecting ring (4), and the first rotating shaft (201) is rotatably mounted in the first mounting notch.

5. A leak-proof fiberglass pipe according to claim 1, characterized in that: At least one second mounting notch is provided on the outer wall of the second connecting ring (5), and the second rotating shaft (203) is rotatably mounted in the second mounting notch.

6. A leak-proof fiberglass pipe according to claim 1, characterized in that: The end of the pull rod (202) away from the first pivot (201) is integrally formed or fixedly connected to a hook.

7. A leak-proof fiberglass pipe according to claim 6, characterized in that: The top rod (204) has a hook-fitting part on its body.

8. A leak-proof fiberglass pipe according to claim 1, characterized in that: The axis of the first rotating shaft (201) and the axis of the second rotating shaft (203) are both perpendicular to the axes of the first fiberglass pipe (1) and the second fiberglass pipe (3).

Images