Quickly-installed stainless steel single-clamping pipe fitting meeting European standard
Through the combination of fastening rings, connecting plates, and fastening bolts, along with multiple sealing designs and three-layer coating protection, the problems of cumbersome pipe installation and insufficient durability are solved, achieving rapid installation and efficient sealing, adapting to complex environments, and meeting European standards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG MINGSHI STAINLESS STEEL
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-19
AI Technical Summary
Existing pipe fittings are cumbersome and time-consuming to install, making it difficult to meet the convenience and sealing requirements of European standards, and they are not durable enough in complex environments.
It adopts a combination structure of fastening ring, connecting plate and fastening bolt, combined with multiple sealing design and three-layer coating protection, including waterproof, rustproof and anti-corrosion coating, and is suitable for sealing ring sleeve and rubber gasket design for pipes of different specifications.
It enables rapid installation, improves sealing and durability, adapts to complex environments, meets European standards, and extends the service life of pipe fittings.
Smart Images

Figure CN224261155U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe fittings technology, specifically a quick-installation stainless steel single-clamp pipe fitting that conforms to European standards. Background Technology
[0002] In the field of pipe connection, the ease of installation, sealing and durability of pipe fittings are of paramount importance. With the development of industry and construction, the requirements for pipe fittings are getting higher and higher, especially the demand for pipe fittings that meet international standards is growing. At present, some pipe fittings on the market are cumbersome to install, which consumes time and manpower and makes it difficult to meet the strict requirements of European standards for pipe fittings and adapt to complex and ever-changing use environments. Utility Model Content
[0003] The purpose of this invention is to provide a quick-installation stainless steel single-clamp pipe fitting that conforms to European standards, and has the advantages of easy installation and good sealing performance.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a quick-installation stainless steel single-clamp pipe fitting conforming to European standards, comprising a connecting pipe, an mounting base fixedly installed at the upper end of the connecting pipe, an mounting hole provided at the top of the mounting base, a fastening ring installed on the outer side of the lower end of the connecting pipe, a connecting plate fixedly installed at the upper connecting part of the fastening ring, a fastening bolt passing through the middle of the connecting plate, a locking bolt installed on the external thread of the left end of the fastening bolt, and a waterproof sealing ring installed on the rear side of the fastening ring. A rubber filling pad is installed at the center of the interior. An auxiliary sealing ring is also provided on the back of the waterproof sealing ring. A base plate is installed at the bottom of the front end of the fastening ring. Guide grooves are opened on both sides of the base plate. A movable sleeve is connected to the top of the guide grooves through a guide block. An adjusting sleeve is installed inside the movable sleeve. A screw is rotatably installed on the outside of the adjusting sleeve. The outer end of the screw extends through to the outside of the movable sleeve. Guide plates are fixedly installed at both ends of the outside of the adjusting sleeve. One end of the guide plate is slidably connected to the through part of the movable sleeve.
[0005] As a preferred embodiment, the coating on the outside of the connecting pipe consists of a waterproof layer, a rust-proof coating, and a corrosion-resistant reinforcing layer. The inner surface of the waterproof layer is coated with a rust-proof coating, and the inner surface of the rust-proof coating is coated with a corrosion-resistant reinforcing layer.
[0006] As a preferred embodiment, a sealing ring sleeve is installed on the inner ring of the upper end of the connecting pipe, and the sealing ring sleeve is made of rubber.
[0007] As a preferred embodiment, a rubber washer is bonded to the inner wall of the fastening ring. The rubber washer consists of two parts and has a thickness of one millimeter.
[0008] As a preferred embodiment, the waterproof layer is made of nano-level waterproof coating material, the anti-rust coating is an epoxy zinc-rich anti-rust paint coating, and the anti-corrosion reinforcement layer is a polytetrafluoroethylene coating.
[0009] As a preferred embodiment, the connection between the connecting plate and the fastening ring is provided with reinforcing ribs, which are triangular in shape.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. This utility model, through the cooperation of fastening rings, connecting plates, and fastening bolts, can quickly achieve the connection and fixation of pipe fittings. Compared with traditional pipe fitting installation methods, it greatly improves installation efficiency and saves installation time and labor costs. The setting of waterproof sealing rings, rubber filling gaskets, and auxiliary sealing rings forms a multi-layer sealing structure, effectively preventing liquid or gas leakage, ensuring the sealing performance of the pipeline system, and meeting the strict requirements of European standards for pipe fitting sealing. The waterproof layer, anti-rust coating, and anti-corrosion reinforcement layer on the outside of the connecting pipe can effectively resist external moisture, corrosive substances, and oxidation, extending the service life of the pipe fittings and making them suitable for various complex operating environments, meeting the durability requirements of European standards for pipe fittings.
[0012] 2. This utility model utilizes the excellent elasticity and plasticity of rubber through a sealing ring sleeve. When the pipe is inserted, it can tightly fit the pipe wall, fill tiny gaps, and form an additional sealing barrier. Especially in high-pressure, high-flow pipeline systems, it can effectively prevent the medium from leaking from the upper interface of the pipe fitting, significantly improving the sealing effect. The rubber gasket bonded to the inner wall of the fastening ring consists of two parts. This unique design can generate sufficient friction to firmly fix the pipe and prevent loosening caused by vibration and pressure fluctuations. At the same time, it can also buffer external impacts to a certain extent, disperse stress, and ensure the stability of the connection. In addition, the two-part structure design facilitates installation and adjustment, and can better adapt to different specifications of pipes, improving the versatility and practicality of the pipe fitting. Attached Figure Description
[0013] Figure 1 This is a first-person perspective structural perspective view of the present invention;
[0014] Figure 2 This is a second-view perspective structural perspective view of the present invention;
[0015] Figure 3 This is a partial structural diagram of the present invention;
[0016] Figure 4 This is a schematic diagram of the external structure of the connecting pipe of this utility model.
[0017] In the diagram: 1. Connecting pipe; 2. Mounting base; 3. Mounting hole; 4. Sealing ring sleeve; 5. Fastening ring; 6. Connecting clamping plate; 7. Fastening bolt; 8. Locking bolt; 9. Rubber gasket; 10. Waterproof sealing ring; 11. Rubber filling gasket; 12. Auxiliary sealing ring; 13. Waterproof layer; 14. Anti-rust coating; 15. Anti-corrosion reinforcing layer; 16. Base plate; 17. Guide groove; 18. Guide block; 19. Moving clamping sleeve; 20. Adjusting clamping sleeve; 21. Screw; 22. Guide plate. Detailed Implementation
[0018] 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.
[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0020] Example 1:
[0021] Please see Figure 1 As shown, this utility model provides a quick-installation stainless steel single-clamp pipe fitting conforming to European standards, including a connecting pipe 1, a mounting base 2 fixedly installed at the upper end of the connecting pipe 1, a mounting hole 3 opened at the top of the mounting base 2, a fastening ring 5 installed on the lower end of the connecting pipe 1, a connecting clamping plate 6 fixedly installed at the upper connecting part of the fastening ring 5, a fastening bolt 7 passing through the middle of the connecting clamping plate 6, a locking bolt 8 installed on the external thread of the left end of the fastening bolt 7, a waterproof sealing ring 10 installed on the rear side of the fastening ring 5, and a rubber filling gasket 11 installed at the center of the interior of the waterproof sealing ring 10. An auxiliary sealing ring 12 is also provided on the back of the waterproof sealing ring 10. A base plate 16 is installed at the bottom of the front end of the fastening ring 5. Guide grooves 17 are opened on both sides of the base plate 16. A movable sleeve 19 is connected above the guide grooves 17 through a guide block 18. An adjusting sleeve 20 is installed inside the movable sleeve 19. A screw 21 is rotatably installed on the outside of the adjusting sleeve 20. The outer end of the screw 21 passes through to the outside of the movable sleeve 19. Guide plates 22 are fixedly installed on both ends of the outside of the adjusting sleeve 20. One end of the guide plate 22 is slidably connected to the through part of the movable sleeve 19.
[0022] This technical solution, through the cooperation of fastening ring 5, connecting clamp 6, and fastening bolt 7, can quickly achieve the connection and fixation of pipe fittings. Compared with traditional pipe fitting installation methods, it greatly improves installation efficiency and saves installation time and labor costs. The setting of waterproof sealing ring 10, rubber filling gasket 11, and auxiliary sealing ring 12 forms a multi-seal structure, which effectively prevents liquid or gas leakage, ensures the sealing performance of the pipeline system, and meets the strict requirements of European standards for pipe fitting sealing. The waterproof layer 13, anti-rust coating 14, and anti-corrosion reinforcement layer 15 on the outside of the connecting pipe 1 can effectively resist external moisture, corrosive substances, and oxidation, extend the service life of the pipe fittings, and make them suitable for various complex operating environments, meeting the requirements of European standards for pipe fitting durability.
[0023] Example 2:
[0024] Based on Embodiment 1, this utility model is as follows: Figure 4 As shown, the coating on the outside of the connecting pipe 1 consists of a waterproof layer 13, a rust-proof coating 14, and a corrosion-resistant reinforcing layer 15. The inner surface of the waterproof layer 13 is coated with the rust-proof coating 14, and the inner surface of the rust-proof coating 14 is coated with the corrosion-resistant reinforcing layer 15.
[0025] Adopting such Figure 1 The technical solution shown employs a nano-level waterproof coating material for the waterproof layer 13. Its unique nano-level molecular structure allows it to form a dense and uniform waterproof film on the surface of the connecting pipe 1, effectively blocking the intrusion of external moisture. Even in humid, water-rich environments, it prevents moisture from penetrating into the pipe, avoiding problems such as rust caused by moisture and ensuring a dry environment for the pipe. The anti-rust coating 14 uses an epoxy zinc-rich anti-rust paint coating. The electrochemical protective effect of zinc forms a sacrificial anode on the surface of the connecting pipe 1, preferentially reacting with oxygen in the air, thereby protecting the stainless steel material of the pipe body from oxidation. This greatly enhances the rust resistance of the pipe and extends its service life in ordinary atmospheric environments. The service life of the pipe is extended, and the anti-corrosion reinforcement layer 15 is made of polytetrafluoroethylene (PTFE). PTFE has excellent chemical stability and can resist the erosion of various strong acids, strong alkalis and other corrosive chemicals. Whether in the highly corrosive environment of chemical production or in pipeline systems containing special chemicals, it can provide a reliable protective barrier for the connecting pipe. These three coatings are tightly bonded and provide layer-by-layer protection, which not only gives the connecting pipe 1 excellent waterproof, rustproof and anti-corrosion performance, effectively extending the service life of the pipe fitting, but also fully meets the stringent requirements of European standards for the durability and protection of pipe fittings, enabling it to adapt to various complex and changing use environments and ensuring the long-term stable operation of the pipeline system.
[0026] After connecting one end of the pipe to the fastening ring 5 at the end of the connecting pipe 1, one end is located inside the adjusting sleeve 20. The adjusting sleeve 20 can be firmly clamped onto the surface of the pipe by driving the screw 21 to reinforce its installation end and ensure the firmness of the connection between the pipe and the connecting pipe 1. At the same time, the distance between the two movable sleeves 19 on the base plate 16 can be adjusted by the knob on the outside of the guide block 18 to accommodate pipes of different sizes for clamping and fixing.
[0027] Secondly, in the technical solution, a sealing ring sleeve 4 is installed on the inner ring of the upper end of the connecting pipe 1. The sealing ring sleeve 4 is made of rubber. A rubber gasket 9 is bonded to the inner wall of the fastening ring 5. The rubber gasket 9 consists of two parts and has a thickness of one millimeter.
[0028] Its adoption is as follows Figure 1 The technical solution shown utilizes the excellent elasticity and plasticity of rubber to tightly fit the pipe wall when the pipe is inserted, filling tiny gaps and forming an additional sealing barrier. Especially in high-pressure, high-flow pipeline systems, it can effectively prevent the medium from leaking from the upper interface of the pipe fitting, significantly improving the sealing effect. The rubber gasket 9 bonded to the inner wall of the fastening ring 5 consists of two parts. This unique design allows it to generate sufficient friction to firmly fix the pipe and prevent loosening caused by vibration and pressure fluctuations. It can also buffer external impacts to a certain extent, disperse stress, and ensure the stability of the connection. At the same time, the two-part structure design facilitates installation and adjustment, better adapts to different pipe specifications, and improves the versatility and practicality of the pipe fitting.
[0029] Example 3:
[0030] This utility model is as follows Figures 1-4 As shown, the waterproof layer 13 is made of nano-level waterproof coating material, the anti-rust coating 14 is an epoxy zinc-rich anti-rust paint coating, and the anti-corrosion reinforcement layer 15 is a polytetrafluoroethylene coating; the connection between the connecting plate 6 and the fastening ring 5 is provided with a reinforcing rib, which is triangular in shape.
[0031] The above technical solution enables quick connection through a fastening structure, saving time and effort. The multi-seal design ensures that the pipeline system does not leak, providing excellent protection. The three-layer coating is waterproof, rustproof, and corrosionproof, extending service life. Triangular reinforcing ribs enhance the strength of key parts.
[0032] The working principle of this utility model is as follows: The waterproof sealing ring 10 is installed on the rear side of the fastening ring 5. The rubber filling gasket 11 inside it can tightly fill the gap between the fastening ring 5 and the pipe when the fastening ring 5 is tightened. The auxiliary sealing ring 12 further enhances the fit between the waterproof sealing ring 10 and the pipe and the installation environment, forming a sealing barrier. After connecting one end of the pipe to the fastening ring 5 at the end of the connecting pipe 1, one end is located inside the adjusting sleeve 20. The adjusting sleeve 20 can be firmly clamped onto the surface of the pipe by the driving screw 21, which can reinforce its installation end and ensure the firmness of the connection between the pipe and the connecting pipe 1. The sealing ring sleeve 4 at the upper inner ring of pipe 1 is made of rubber. With the good elasticity of rubber, after the pipe is inserted, the sealing ring sleeve 4 tightly wraps the pipe and seals the upper interface of the connecting pipe 1. The multiple sealing structures work together to effectively prevent liquid or gas from leaking from the pipe connection and ensure the sealing of the pipeline system. The waterproof layer 13, anti-rust coating 14 and anti-corrosion reinforcement layer 15 on the outside of the connecting pipe 1 can effectively resist external moisture, corrosive substances and oxidation, extend the service life of the pipe fitting, make it suitable for various complex use environments, and meet the European standard requirements for pipe fitting durability.
[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A quick-installation stainless steel single-clamp pipe fitting conforming to European standards, comprising a connecting pipe (1), characterized in that: A mounting base (2) is fixedly installed at the upper end of the connecting pipe (1). A mounting hole (3) is provided at the top of the mounting base (2). A fastening ring (5) is installed on the outside of the lower end of the connecting pipe (1). A connecting plate (6) is fixedly installed at the upper connecting part of the fastening ring (5). A fastening bolt (7) is provided through the middle of the connecting plate (6). A locking bolt (8) is installed on the external thread of the left end of the fastening bolt (7). A waterproof sealing ring (10) is installed on the rear side of the fastening ring (5). A rubber filling pad (11) is installed at the center of the waterproof sealing ring (10). An auxiliary sealing ring (10) is also provided on the back of the waterproof sealing ring (10). A sealing ring (12) is provided. A base plate (16) is installed at the bottom of the front end of the fastening ring (5). Guide grooves (17) are provided on both sides of the base plate (16). A movable sleeve (19) is connected above the guide groove (17) through a guide block (18). An adjusting sleeve (20) is installed inside the movable sleeve (19). A screw (21) is rotatably installed on the outside of the adjusting sleeve (20). The outer end of the screw (21) extends through to the outside of the movable sleeve (19). Guide plates (22) are fixedly installed at both ends of the outside of the adjusting sleeve (20). One end of the guide plate (22) is slidably connected to the through part of the movable sleeve (19).
2. The quick-installation stainless steel single-clamp pipe fitting conforming to European standards according to claim 1, characterized in that: The coating on the outside of the connecting pipe (1) consists of a waterproof layer (13), a rust-proof coating (14) and a corrosion-resistant reinforcing layer (15). The inner surface of the waterproof layer (13) is coated with a rust-proof coating (14), and the inner surface of the rust-proof coating (14) is coated with a corrosion-resistant reinforcing layer (15).
3. The quick-installation stainless steel single-clamp pipe fitting conforming to European standards according to claim 1, characterized in that: A sealing ring sleeve (4) is installed on the inner ring of the upper end of the connecting pipe (1), and the sealing ring sleeve (4) is made of rubber.
4. The quick-installation stainless steel single-clamp pipe fitting conforming to European standards according to claim 1, characterized in that: The inner wall of the fastening ring (5) is bonded with a rubber washer (9), which consists of two parts and has a thickness of one millimeter.
5. A quick-installation stainless steel single-clamp pipe fitting conforming to European standards as described in claim 2, characterized in that: The waterproof layer (13) is made of nano-level waterproof coating material, the anti-rust coating (14) is an epoxy zinc-rich anti-rust paint coating, and the anti-corrosion reinforcement layer (15) is a polytetrafluoroethylene coating.
6. A quick-installation stainless steel single-clamp pipe fitting conforming to European standards as described in claim 1, characterized in that: The connection between the connecting plate (6) and the fastening ring (5) is provided with reinforcing ribs, which are triangular in shape.