A pipe multi-caliber connecting device

Abstract

The utility model discloses a kind of pipe multiple aperture connecting devices, including hexagonal column, hexagonal column is equipped with through hole, hexagonal column is equipped with recess in both ends, through hole and recess coaxial arrangement is set, recess is coaxially equipped with first ring block and second ring block, first ring block and second ring block can be connected with different diameter pipe respectively, the outer diameter of pipe is equipped with fourth screw face. By setting the connecting structure of different caliber pipe that can be adapted in hexagonal column both ends, the universal compatibility of single connecting device to multiple specifications pipe fittings is realized, and installation flexibility and use efficiency are significantly improved. Hexagonal column design is convenient to use wrench and other tools fastening, ensure assembly reliability;Through hole guarantees that fluid passage is unobstructed, reduces pressure loss;Through hole and recess of coaxial arrangement effectively guarantee concentricity in the process of connection, avoid leakage or stress concentration caused by eccentricity. Meanwhile, the structure can realize different diameter connection without additional adapter.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a multi-diameter pipe fitting connection device. Background Technology

[0002] Pipe fittings are mechanical components used to connect two sections of pipe and seal the fluid passage. They are widely used in plumbing, fire protection, and industrial fluid systems. They typically consist of a fitting body and a fastening structure, and are connected to the pipe via threads, clamping, or flaring to ensure a leak-proof and secure connection. They are indispensable basic components in piping systems.

[0003] In existing technologies, most connection devices are only compatible with a single pipe diameter. When different diameter pipes need to be connected on site, the corresponding model of connector must be found and replaced. This not only requires carrying multiple specifications of accessories, increasing the burden of transportation and management, but also makes it difficult to quickly match suitable connectors in emergency repair environments, resulting in reduced construction efficiency, inconvenient operation, and seriously affecting the overall smoothness of the operation. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-diameter pipe connection device to solve the problems of incompatibility with multiple pipe diameters and poor versatility mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-diameter pipe connection device, comprising a hexagonal column, a through hole in the hexagonal column, grooves at both ends of the hexagonal column, the through hole and the grooves being coaxially arranged, a first ring block and a second ring block being coaxially arranged in the grooves, the first ring block and the second ring block being able to connect pipes of different diameters respectively, and a fourth threaded surface being provided at the outer diameter of the pipe.

[0006] In the preferred embodiment of this technical solution, the diameter of the groove is larger than the inner diameter of the second ring block, and the sidewall of the groove is provided with a third threaded surface.

[0007] In the preferred embodiment of this technical solution, the inner diameter of the first ring block is smaller than the inner diameter of the second ring block, the inner wall of the second ring block is provided with a second threaded surface, and the inner wall of the first ring block is provided with a first threaded surface.

[0008] Based on the preferred embodiment of this technical solution, an anti-loosening rubber sheet is attached to the groove at the position corresponding to the tube.

[0009] In a preferred embodiment of this technical solution, the outer wall of the first ring block is provided with a first receiving groove, and the outer wall of the second ring block is provided with a second receiving groove. The first receiving groove can accommodate the first rubber ring, and the second receiving groove can accommodate the second rubber ring.

[0010] In the preferred embodiment of this technical solution, the first ring block and the second ring block are made of stainless steel, and the anti-loosening rubber sheet, the first rubber ring, and the second rubber ring are made of nitrile rubber.

[0011] In a preferred embodiment of this technical solution, the outer walls of the first rubber ring and the second rubber ring are provided with several convex rings, which are used to increase the friction between the convex rings and the inner wall of the tube.

[0012] In a preferred embodiment of this technical solution, the first rubber ring and the second rubber ring are respectively provided with chamfers, which are used to guide the tube to be sleeved on the outer wall of the first rubber ring or the second rubber ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up replaceable first and second ring blocks, and matching different inner diameters and thread structures, the same device can be adapted to multiple pipe diameters, eliminating the need to prepare multiple special connectors, significantly improving versatility and on-site construction efficiency, and reducing parts management costs.

[0014] 2. The design incorporates rubber rings, convex rings, chamfers, and anti-loosening rubber sheets to enhance sealing and vibration resistance. During installation, the system ensures smooth guidance and a secure connection, effectively preventing media leakage and pipe detachment, and improving connection reliability and ease of operation. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of one embodiment of the multi-diameter pipe fitting connection device of this utility model; Figure 2 This is a schematic diagram of the perforated structure of this utility model; Figure 3 This is a schematic diagram of the third threaded surface structure of this utility model; Figure 4 This is a schematic diagram of the second rubber ring structure of this utility model; Figure 5 This is a schematic diagram of the convex ring structure of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Hexagonal prism; 10. Perforation; 101. Groove; 1011. Third threaded surface; 1041. Chamfer; 1042. Raised ring; 11. First ring block; 111. First threaded surface; 113. First receiving groove; 114. First rubber ring; 12. Second ring block; 121. Second threaded surface; 123. Second receiving groove; 124. Second rubber ring; 2. Tube; 21. Fourth threaded surface. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model provides an embodiment of a multi-diameter pipe fitting connection device, including a hexagonal column 1 with a through hole 10 inside the hexagonal column 1. Grooves 101 are provided at both ends of the hexagonal column 1, and the through hole 10 and grooves 101 are coaxially arranged. A first ring block 11 and a second ring block 12 are coaxially arranged within the grooves 101. The first ring block 11 and the second ring block 12 can respectively connect pipes 2 of different diameters. A fourth threaded surface 21 is provided on the outer diameter of the pipe 2. By providing a connection structure at both ends of the hexagonal column 1 that can accommodate pipes 2 of different diameters, a single connection device achieves universal compatibility with multiple specifications of pipe fittings, significantly improving installation flexibility and usage efficiency. The hexagonal column 1 is designed for easy tightening with tools such as wrenches, ensuring assembly reliability; the through hole 10 ensures unobstructed fluid passage, reducing pressure loss; the coaxially arranged through hole 10 and groove 101 effectively ensure concentricity during the connection process, avoiding leakage or stress concentration caused by eccentricity. Furthermore, this structure can achieve connections between pipes of different diameters without the need for additional adapters.

[0019] Please see Figure 1-5 A further solution based on this embodiment is as follows: the diameter of the groove 101 is larger than the inner diameter of the second ring block 12, and the side wall of the groove 101 is provided with a third threaded surface 1011. This structure allows the first ring block 11 and the second ring block 12 to be installed in the groove 101 by screwing them in, thereby achieving axial positioning and locking and preventing loosening and falling off during operation.

[0020] Please see Figure 1-4 A further solution based on this embodiment is as follows: the inner diameter of the first ring block 11 is smaller than the inner diameter of the second ring block 12; the inner wall of the second ring block 12 is provided with a second threaded surface 121; and the inner wall of the first ring block 11 is provided with a first threaded surface 111. By setting two ring blocks with different inner diameters and equipping them with corresponding internal threads, the fourth threaded surface 21 of small-diameter and large-diameter pipes 2 can be matched respectively, achieving precise docking and mechanical engagement, enhancing connection strength and sealing performance; the dual-specification configuration enables the same connector to have the ability to "use one thing for multiple purposes", reducing the types of spare parts.

[0021] Please see Figure 1-4A further embodiment of this solution is as follows: the outer wall of the first ring block 11 is provided with a first receiving groove 113, and the outer wall of the second ring block 12 is provided with a second receiving groove 123. The first receiving groove 113 can accommodate the first rubber ring 114, and the second receiving groove 123 can accommodate the second rubber ring 124. The receiving groove is designed to fix the rubber ring, preventing it from shifting during installation or vibration, and ensuring a stable and reliable sealing position. When the rubber ring is compressed, it can deform evenly to fill the gap between the pipe 2 and the ring block, forming an elastic seal, effectively preventing media leakage, and is especially suitable for connecting non-standard sized or slightly worn pipes 2.

[0022] Please see Figure 1-4 A further solution based on this embodiment is as follows: an anti-loosening rubber sheet is attached to the groove 101 at the position corresponding to the tube 2. The anti-loosening rubber sheet increases the radial friction between the tube 2 and the body of the hexagonal post 1 after insertion, playing an auxiliary clamping role and preventing the tube 2 from axially slipping due to vibration or pressure fluctuations.

[0023] Please see Figure 2-5 A further embodiment of this design is as follows: the first ring block 11 and the second ring block 12 are made of stainless steel, and the anti-loosening rubber sheet, the first rubber ring 114, and the second rubber ring 124 are made of nitrile rubber. Stainless steel possesses high strength, corrosion resistance, and high-temperature resistance, ensuring long-term stable operation of metal components in harsh environments. Nitrile rubber exhibits excellent oil resistance, wear resistance, and aging resistance, making it suitable for contact with media such as hydraulic oil and fuel. The seals are less prone to hardening and cracking, ensuring a durable sealing effect. The overall machine has high reliability and a wide range of applications.

[0024] Please see Figure 2-5 A further embodiment of this solution is as follows: the outer walls of the first rubber ring 114 and the second rubber ring 124 are provided with a plurality of protruding rings 1042, which are used to increase the friction between the rubber rings and the inner wall of the tube 2. The structure of the protruding rings 1042 increases the actual contact area and surface roughness between the rubber rings and the inner wall of the tube 2, significantly improving the static friction and tensile strength.

[0025] Please see Figure 2-5 A further solution based on this embodiment is as follows: The first rubber ring 114 and the second rubber ring 124 are respectively provided with chamfers 1041. The chamfers 1041 are used to guide the tube 2 to be fitted onto the outer wall of the first rubber ring 114 or the second rubber ring 124. The chamfers 1041 serve a guiding function, improving assembly efficiency and user experience.

[0026] Working principle: Select the appropriate first ring block 11 or second ring block 12 according to the specifications of the pipe 2 to be connected, and screw it into the groove 101 of the hexagonal column 1 through the third threaded surface 1011, the first threaded section or the second threaded section for fixation; at the same time, the first rubber ring 114 is sleeved on the first receiving groove 113 of the first ring block 11, and the second rubber ring 124 is sleeved on the second receiving groove 123 of the second ring block 12, and glue is used to increase the connection strength, and the anti-loosening rubber sheet is attached to the corresponding position in the groove 101; the pipe 2 enters from the end along the axial direction, and its inner wall passes through the chamfer 1041 on the rubber ring, and is smoothly sleeved on the outer circumference of the first rubber ring 114 or the second rubber ring 124; the convex ring 1042 on the outer wall of the rubber ring is compressed and tightly fits the inner wall of the pipe 2, forming a multi-seal and anti-loosening structure; the hexagonal column 1 can be used with a wrench tool.

[0027] 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 multi-diameter pipe fitting connection device, characterized in that: It includes a hexagonal prism (1), a through hole (10) inside the hexagonal prism (1), grooves (101) at both ends of the hexagonal prism (1), the through hole (10) and the groove (101) are coaxially arranged, a first ring block (11) and a second ring block (12) are coaxially arranged inside the groove (101), the first ring block (11) and the second ring block (12) can respectively connect pipes (2) of different diameters, and a fourth threaded surface (21) is provided on the outer diameter of the pipe (2).

2. The multi-diameter pipe fitting connection device according to claim 1, characterized in that: The diameter of the groove (101) is larger than the inner diameter of the second ring block (12), and the sidewall of the groove (101) is provided with a third threaded surface (1011).

3. The multi-diameter pipe fitting connection device according to claim 2, characterized in that: The inner diameter of the first ring block (11) is smaller than the inner diameter of the second ring block (12). The inner wall of the second ring block (12) is provided with a second threaded surface (121), and the inner wall of the first ring block (11) is provided with a first threaded surface (111).

4. The multi-diameter pipe fitting connection device according to claim 3, characterized in that: An anti-loosening rubber sheet is attached to the groove (101) at the position corresponding to the tube (2).

5. The multi-diameter pipe fitting connection device according to claim 1, characterized in that: The outer wall of the first ring block (11) is provided with a first receiving groove (113), and the outer wall of the second ring block (12) is provided with a second receiving groove (123). The first receiving groove (113) can accommodate a first rubber ring (114), and the second receiving groove (123) can accommodate a second rubber ring (124).

6. The multi-diameter pipe fitting connection device according to claim 5, characterized in that: The first ring block (11) and the second ring block (12) are made of stainless steel, and the anti-loosening rubber sheet, the first rubber ring (114), and the second rubber ring (124) are made of nitrile rubber.

7. The multi-diameter pipe fitting connection device according to claim 6, characterized in that: The outer walls of the first rubber ring (114) and the second rubber ring (124) are provided with several protruding rings (1042), which are used to increase the friction between the protruding rings (1042) and the inner wall of the tube (2).

8. The multi-diameter pipe fitting connection device according to claim 7, characterized in that: The first rubber ring (114) and the second rubber ring (124) are respectively provided with chamfers (1041), which are used to guide the tube (2) to be sleeved on the outer wall of the first rubber ring (114) or the second rubber ring (124).

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