LOCKING COUPLING NUT

Abstract

The invention relates to coupling connections used in plastic pipelines, which include a nut (1) that, when screwed onto the threaded part on the body (5), applies axial pressure on the clamping part (2) through its inner conical surface, mechanically locking the pipe and sealing it via a gasket (4). The design of the nut (1) with a low-angle thread of approximately 3 degrees (1.1) allows for sufficient clearance in the internal volume to loosen the nut (1) by at least two thread lengths without completely separating it from the body (5), thus ensuring that the internal components are held together within the body (5). This design ensures a leak-proof and mechanically secure pipe connection.

Description

1 TARIFF LOCKING COUPLING NUT Technical Area The invention relates to mechanical coupling fittings used in plastic pipe systems, particularly polyethylene (PE) 5 This relates to locking coupling nuts for pipes, especially those used in polyethylene (PE) pipes. Practical connection and reconnection operations in transmission lines under field conditions. It is used in applications where its implementation is required. State of the Art 10 Today, in plastic pipe infrastructure systems, especially the fastening of polyethylene (PE) pipes to each other... Mechanical coupling connections are widely used to ensure leak-proof transmission of liquids / gases. It is used as follows. Existing coupling systems used in the known state of the art have standard toothed connections. The tube is clamped to the housing via nuts with specific shapes and secured to the pipe by means of a retaining ring. It fixes it. 15 Standard tooth structures used in current designs have significant technical limitations in field applications. This brings with it certain limitations. These limitations primarily include the need to reconnect the pipeline or the pipeline itself. When revision is required, the nut must be completely removed (disassembled) from the connecting body. This becomes a necessity, especially in narrow channels, muddy ground, or work areas with limited access. Completely removing the nut can cause delicate parts such as the internal gasket and retaining ring to disintegrate, 20 This can prolong assembly time and reduce labor productivity by causing contamination or loss. This reduces the pressure on the line. In addition, existing nuts with a standard thread pattern reduce the high pressure on the line. It can flex over time against fluctuations and axial tensile forces, which causes the pipe to This can result in mechanical failures such as the nut coming loose from the coupling. Under field conditions, the nut... Completely disassembling and reassembling it each time can lead to deformations in the tooth structure and user-caused assembly errors. 25 It also invites mistakes. The document numbered EP1865243A1, which is seen in the known state of the art, is specifically for polyethylene pipes. This describes a compression fitting. Specifically, it is a compression fitting for polyethylene pipes. It contains a body that will receive a pipe to be inserted into it. The body has an external connection thread, where The connector also includes a locking nut that can be attached to the thread of the housing. The pipe to be connected is 30 Includes tools for locking and sealing, locking tools and sealing tools in one unit. 2 This is provided by the component. Pipe fitting or thread angle reduction can be clearly achieved by loosening the nut. He won't take it. The connection fitting shown in the previous design, document number US20050194786A1, is relative to the pipe body. a pipe body containing a nut that can move axially and rotatably, and fixed to the nut It generally includes a female connection assembly consisting of a U-shaped spring. The spring is attached to the nut tube body 5 When installed, it wraps around the pipe body and can make contact with the ribs on opposite sides of the pipe body. It has a pair of laterally spaced arms. There is no reduction in tooth angle or specific degree definition. This guide describes how to install pipes by loosening the coupling nut on products from the Norma, Poly Fit, and Hidroten brands. However, tooth angle, tooth profile, or geometric optimization is not specified. Philmac assembly guidelines The coupling elements are supplied pre-assembled. There is no need to remove the nut. It is stated, but the tooth angle or tooth geometry is not defined. In addition to all of these, Poelsan offers mechanical fittings, synchronous plastic coupling products, and Fitsa polyethylene. Many companies offer products with classic and standard thread designs for fittings, etc. In conclusion, current technical solutions allow for quick installation and removal without completely disassembling the pipe. It does not have a tooth geometry that would allow for this and the high tensile strength required by PE pipes 15 Due to its inability to fully meet the required strength, a functional improvement is needed in the relevant technical field. It has become necessary to do so. Purpose of the Invention The purpose of the invention is to provide coupling connections, assembly and 20 used in plastic pipe installations, especially PE pipe installations. Tooth angle that accelerates maintenance processes, minimizes field errors, and increases mechanical strength. The goal is to achieve a nut structure with reduced locking force. The purpose of the invention is to completely remove the nut for reinstalling the pipe in existing systems. The coupling structure eliminates the need for disassembly. The aim of the invention is to optimize the nut thread shape by 3 degrees, thereby allowing the nut to move 25 degrees away from the body. without separating them, the tube can be securely reattached by loosening it only by at least two tooth lengths. It is the ability to connect. The purpose of the invention is to prevent parts such as retaining rings and seals inside nuts from scattering or becoming contaminated. The aim is to prevent this and save labor and time. The purpose of the invention is to achieve a 30-degree clamping between the nut and the housing through a low-angle thread structure. By increasing its surface area, it improves the tensile strength, which is critical in polyethylene pipe fittings. The goal is to maximize resistance to dynamic loads on the line. 3 The aim of the invention is to provide ease of assembly in challenging field conditions while delivering high performance throughout its service life. The goal is to provide a functional coupling nut structure that offers connection security. To fulfill the above objectives, the city's drinking water and clean water networks, and agricultural irrigation... plastic pipe fittings in areas such as systems, landscape irrigation lines, greenhouses, drainage systems and similar applications. Used in all installation applications where the components are present, preventing the internal parts from scattering or 5 plastic pipe that maintains part integrity by preventing contamination or loss. Interlocking couplings providing high tensile strength and fast assembly in pipelines; sealing and where the internal components that perform mechanical holding functions are positioned and these components have specific The body, which allows it to be held in an axial and radial position, is screwed onto the threads on the body. connected by the 3-degree low-angle tooth form on it, from the mentioned body (5) 10 A fitting that allows the pipe to be removed and reinstalled by controlled loosening without completely separating it. The nut, under the influence of the axial force applied by the nut, contracts radially on the outside of the pipe. a clamping piece that grips the surface and enables the pipe to be mechanically locked in place. It includes. Additionally, it supports the end of the plastic pipe from the inside, guiding the pipe during connection, and is 15 It consists of an inner sleeve that provides force transmission between the aforementioned compression piece and the seal. Inner sleeve A seal is created between the pipe and the casing by pressing the pipe against the casing wall with the pressure force transmitted through it. It includes a seal that provides high tensile strength and quick assembly in plastic pipelines. It is a nut that achieves its capability with its 3-degree low-angle thread form. In the lines The plastic pipe assembly is performed inside the coupling housing, sequentially placing the gasket, the pipe, and the gasket 20. A locking mechanism is achieved by the presence of a compression piece that grips the inner sleeve and tube, providing internal support. Sealing is ensured through the inner conical surface when the threaded housing on the body is seated. By applying axial pressure on the compression piece, both the seal and the pipe are mechanically secured. It is the nut that provides the locking mechanism. The 3-degree low-angle thread design on the nut and this Thanks to the controlled loosening provided by the design, the nut only needs to be loosened by at least two thread lengths (25). By loosening the seal, sufficient space is created inside the chamber for the pipe to pass through. Thanks to its low-angle tooth structure, the contact surface between the body and the tooth is increased, making it particularly suitable for polyethylene. (PE) pipe connections provide high tensile strength, resisting physical loads on the line. It is a nut that provides a secure locking by exhibiting high resistance. It is used to fix the pipe to the line. During this process, when the nut is rotated, the coupling makes an axial advancement on the housing. The nut's 30 This linear motion creates radial pressure on the conical compression piece inside. The compression piece, under the pressure it receives from the nut, narrows towards the outer surface of the pipe, thus compressing the pipe. It performs the biting or gripping action. During this process, the force transmitted through the inner sleeve pulls the seal against the body. By pressing it against the wall, it provides dual protection with both a seal and a mechanical grip. 4 Brief Description of the Invention This invention enables quick and safe mechanical coupling connections used in plastic pipe systems. This relates specifically to interlocking coupling nuts that enable repeatable connection. Connection and reconnection in field conditions in fluid transmission lines using polyethylene (PE) pipes. It is used in applications where operations need to be performed practically. 5 The invention is applicable to urban drinking water and clean water networks, agricultural irrigation systems, landscape irrigation lines, greenhouses, in drainage systems and similar plastic pipe infrastructures, all where coupling connection elements are used. It is suitable for application in plumbing systems. It is also suitable for maintenance, repair, or line connection of pipe connections. Important in field applications where frequent disassembly and reassembly is required during revisions. It provides an advantage. 10 This invention overcomes the need for complete disassembly and low tensile strength in the current technology. The problems are that the nut, which has a 10-degree thread angle in the known technique, has a low-angle thread form of 3 degrees. by being structured as a nut and the stepped loosening mechanism provided by this form, it eliminates It removes it. The basic working principle of the invention is that the thread angle is reduced to 3 degrees, thus lifting the nut body. It is based on optimizing the linear motion tolerance on it. This special tooth geometry 15 Thanks to this, the nut can be attached to the connecting body with just at least two threads, without needing to be completely separated. sufficient clearance for the internal retaining elements to release the pipe when it is loosened by its length This technical feature enables the complete removal of the nut, especially in challenging field conditions. by eliminating problems such as part loss, contamination, and extended assembly time that occur during the process It allows the pipe to be reconnected directly and quickly via the nut. 20 At the same time, reducing the thread angle increases the contact surface area between the nut and the housing, It creates a mechanical locking effect against axial tensile forces. In this way, polyethylene (PE) in pipe connections under high pressure fluctuations and physical loads on the line By preventing the nut from skipping threads or the pipe from coming loose, the tensile strength of the system is maintained. Overall operational durability is maximized. 25 Explanation of Invention Forms Figure 1 - Front and Internal Cross-Sectional View of the Nut Figure 2 - Cross-sectional view of nut thread angle structure. Figure 3 - Coupling Side Cross-Section View 30 Figure 4 - General View of the Coupling Reference Numbers: 1. Nut 1.1. Teeth 2. Compression Part 3. Internal Column 5 4. Gasket 5. Coupling Body Detailed Description of the Invention The invention provides a low-angle 10-inch plastic pipeline that offers high tensile strength and quick assembly capability. The invention relates to a nut (1) structure with a tooth (1.1) form. The technical structure of the invention is the assembly of The sealing element gasket (4), pipe and the coupling body (5) into which the sealing element is made are placed respectively. the inner sleeve (3) supporting the gasket (4) from the inside and the compression piece (3) gripping the tube (pump / holder) (ring) is placed on these internal components, then the threads of the nut (1) element (1.1) are used on them. It is based on the principle of assembly. (Figure – 4) 15 When the Nut (1) shown in Figure – 1 is seated in the threaded slot on the body (5), its inner conical surface By applying axial pressure onto the compression piece, it both initiates the sealing process and... It locks the pipe mechanically. The basic operating logic and working principle of the invention is the nut (1) with the 3-degree low-angle tooth form (1.1) shown in Figure 2 and the benefits provided by this form It is based on a controlled release mechanism. Thanks to this special thread geometry, the pipe is 20 inches from the line. When the nut (1) needs to be removed or reinstalled, it must not be completely removed from the body (5), sufficient clearance for the tube to pass through the interior volume by loosening it by only at least two teeth (1.1) lengths This is done by the nut (1) without separating from the body (5), the seal inside. (4), the scattering, contamination or loss of parts such as inner sleeve (3) and compression piece (2) It protects the integrity of the part by preventing it. At the same time, the low-angle thread structure of the nut (1) and the body 25 (5) By increasing the contact surface between them, high tensile strength is achieved, especially in polyethylene (PE) pipe connections. It provides strength and exhibits superior resistance to physical loads on the line, ensuring safety. It performs a locking function. The coupling housing (5), which forms the main body of the system, is where the sealing and holding elements are mounted. It is the carrier element. Inside the body (5), respectively, a gasket (4) to prevent fluid leakage, and 30 at the end of the pipe 6 The guiding inner collar (3) and the compression piece (2) that physically grips the tube are installed. This inner All components are enclosed in the outer casing (5) via the nut (1). During the process of fixing the pipe to the line, when the nut (1) is rotated, the coupling body (5) moves axially on the body. It makes progress. This linear movement of the nut (1) is driven by the conical clamping piece (2) inside. It creates a radial pressure on it. The compression piece (2), with this pressure it receives from the nut (1), compresses the outside of the pipe. It constricts towards the surface, performing a biting or gripping action on the tube. During this process, the inner collar... The force transmitted through (3) presses the gasket (4) against the wall of the body (5), providing both sealing and It provides bidirectional protection with a mechanical grip. (Figure – 3)

Claims

7 REQUESTS 1. City drinking water and clean water networks, agricultural irrigation systems, landscape irrigation lines, greenhouses, All installations where plastic pipe fittings are used in drainage systems and similar areas. used in applications, preventing internal parts from scattering, getting dirty, or getting lost. By preventing this, it preserves the integrity of the part and high tensile strength in plastic pipelines. It is a locking coupling that provides strength and quick assembly; its features include leak-proof and mechanical retention. where the internal components that perform their functions are positioned and these components have a specific axial and The body (5), which enables it to be held in a radial position, is rotated onto the teeth on the aforementioned body (5). connected by the form of the 3-degree low-angle tooth (1.1) on it, from the mentioned body (5) Connector that allows pipe removal and installation by controlled loosening without completely separating it 10 The nut (1) is radially affected by the axial force applied by the aforementioned nut (1). a device that constricts and grips the outer surface of the pipe, enabling the pipe to be mechanically locked into place. It contains a compression piece (2).

2. Compliant with Request 1, it is a locking coupling whose feature is that it supports the end of the pipe from the inside during connection. The force between the compression piece (2) and the seal (4) which guides the pipe during this process is 15 It contains internal choline (3) which enables transmission.

3. Compliant with claim – 1, it is a locking coupling, the feature of which is the pressure transmitted through the mentioned inner coil (3). The gasket (4) that provides a seal between the pipe and the body (5) by being pressed against the wall of the body (5) with force. It includes.

4. Compliant with Request 1, it is a locking coupling with the characteristic of having a high tensile strength of 20 in plastic pipelines. and provides quick assembly capability by having a 3 degree low angle thread (1.1) form nut (1) It is the fact that.

5. Compliant with Request 1, it is a locking coupling, the characteristic of which is; for plastic pipe assembly in the mentioned lines. The gasket (4), pipe and gasket (4) are respectively placed inside the coupling housing (5) where it is made. 25 characterized by the presence of the supporting inner sleeve (3) and the clamping piece (3) gripping the tube It is done.

6. A locking coupling conforming to Claim – 1 or Claim – 4, the feature of which is; on the aforementioned body (5) When the gear is seated in the housing, an axial pressure is exerted on the clamping part (2) through its inner conical surface. The nut (1) ensures both leak tightness and mechanical locking of the pipe by applying it.

7. A locking coupling that complies with any of the above requirements, and has the following characteristics: low angle tooth (1.1) 30 thanks to its structure, the contact surface between the body (5) and the polyethylene (PE) pipe is increased. By providing high tensile strength at the connections, it offers high resistance to physical loads on the line. It contains a nut (1) which provides a secure locking by exhibiting resistance.