A stainless steel pipe fitting connecting device suitable for large pipe diameter water supply systems

The system utilizes an electric telescopic rod and a motor-driven threaded rod to automate the clamping of stainless steel pipe fittings. A double-sealing structure addresses the issues of low connection efficiency and poor sealing in large-diameter water supply systems, thereby improving installation efficiency and sealing performance.

CN224315672UActive Publication Date: 2026-06-02ZHEJIANG MINGSHI STAINLESS STEEL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG MINGSHI STAINLESS STEEL
Filing Date
2025-07-04
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In large-diameter water supply systems, stainless steel pipe fittings are inefficient to connect and have poor sealing performance. Existing flange welding and bolt tightening methods are difficult to operate and the gaskets are prone to deformation.

Method used

The system employs an electric telescopic rod and a motor-driven threaded rod system to achieve automated clamping of stainless steel pipe fittings. It also improves sealing performance through a double sealing structure, which includes the fitting of a first annular sealing gasket and a second annular groove to form multiple sealing barriers.

Benefits of technology

It enables efficient and automated installation of large-diameter pipe fittings, reduces manpower input, improves installation accuracy and sealing effect, and avoids loose connections and leaks caused by human operation deviations.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a stainless steel pipe fitting connection device suitable for large-diameter water supply systems, including a base, a first pipe, a first connector, a second connector, and a second pipe. Electric telescopic rods are fixedly connected to both ends of the top of the base, and a housing is fixedly connected to the top of the electric telescopic rods. The housing is connected to the electric telescopic rods on the top of the base. A motor on the side of the housing drives a threaded rod that is threadedly connected to a threaded pipe. A clamping plate is fixed to the end of the threaded rod, and the rectangular through-hole of the clamping plate mates with the rectangular insert of the connector. The height of the housing can be adjusted according to the pipe diameter. When the motor drives the threaded rod to rotate, the guide groove inside the housing slides against the guide block at the bottom of the threaded pipe, limiting the radial displacement of the threaded pipe during rotation and ensuring that the clamping plate moves smoothly along a straight trajectory. The threaded pipe pushes the clamping plate to slide along the rectangular insert, achieving automated clamping of the first and second connectors.
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Description

Technical Field

[0001] This utility model relates to the technical field of stainless steel pipe fitting connection devices, specifically a stainless steel pipe fitting connection device suitable for large-diameter water supply systems. Background Technology

[0002] In large-diameter water supply systems, the reliability of stainless steel pipe fitting connections directly affects the stability and safety of the system. These systems typically handle water delivery in critical scenarios such as urban trunk networks and centralized water supply in industrial parks. Their operating pressure, pipe diameter, and fluid throughput are significantly higher than those of ordinary water supply and drainage systems, thus placing more stringent technical requirements on pipe fitting connections. However, current large-diameter pipe fitting connections mostly employ flange welding or bolt tightening. Manual welding requires work at heights or in confined spaces, which is not only inefficient but also prone to causing deformation of stainless steel pipe fittings due to welding temperatures, affecting sealing performance. Bolt tightening, on the other hand, requires multiple people to tighten the bolts due to the weight of large-diameter pipe fittings, making the operation difficult. Uneven bolt force can also cause gasket deformation, leading to leaks at the joints. Therefore, we propose a stainless steel pipe fitting connection device suitable for large-diameter water supply systems. Utility Model Content

[0003] The purpose of this utility model is to provide a stainless steel pipe fitting connection device suitable for large-diameter water supply systems. It has the advantage of automatic fixing and solves the problem that current large-diameter pipe fitting connections mostly use flange welding or bolt tightening. Manual welding requires working at height or in confined spaces, which is not only inefficient, but the welding temperature can easily cause the stainless steel pipe fitting to deform, affecting the sealing performance. Bolt tightening is also difficult because the large-diameter pipe fitting is heavy, requiring multiple people to tighten the bolts. Uneven bolt force can easily cause the sealing gasket to be squeezed and deformed, leading to water leakage at the joint.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel pipe fitting connection device suitable for large-diameter water supply systems, comprising a base, a first pipe, a first connector, a second connector, and a second pipe. An electric telescopic rod is fixedly connected to both the left and right ends of the top of the base. A housing is fixedly connected to the top of the electric telescopic rod. A motor is fixedly connected to the side of the housing. A threaded rod is fixedly connected to the output shaft of the motor. A threaded pipe is threaded onto the outer surface of the threaded rod. A clamping plate is fixedly connected to the other end of the threaded pipe. Rectangular through holes are provided at both the front and rear ends of the clamping plate. Rectangular inserts are fixedly connected to the left and right sides of both the first and second connectors, and the rectangular inserts penetrate the inner cavity of the rectangular through holes.

[0005] Preferably, the first pipe is fixedly connected to the first connector, a first annular groove is provided on the right side of the first connector, a second annular sealing gasket is fixedly connected to the inner cavity of the first annular groove, the second pipe is fixedly connected to the second connector, a first annular sealing gasket is fixedly connected to the side of the second connector, a second annular groove is provided on the left side of the first annular sealing gasket, the first annular sealing gasket is movably connected to the inner cavity of the first annular groove, and the second annular sealing gasket is movably connected to the inner cavity of the second annular groove.

[0006] Preferably, fixing blocks are fixedly connected to both the left and right sides of the base, and screws are provided on the fixing blocks.

[0007] Preferably, a guide groove is provided at the bottom of the inner cavity of the housing, and a guide block is fixedly connected to the bottom of the threaded tube, with the bottom of the guide block slidably connected to the inner cavity of the guide groove.

[0008] Preferably, a battery slot is provided at the left end of the front side of the base, and a storage battery is fixedly connected to the inner cavity of the battery slot.

[0009] Preferably, a tool slot is provided at the right end of the inner cavity of the base, and a partition is fixedly connected to the inner cavity of the tool slot.

[0010] Preferably, a PLC controller is fixedly connected to the left end of the front of the base, and the output end of the PLC controller is electrically connected to the input end of the electric telescopic rod and the motor.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model connects the housing to the electric telescopic rod at the top of the base. The motor on the side of the housing drives a threaded rod that is threaded to a threaded pipe. The end of the threaded rod is fixed with a clamping plate. The rectangular through hole of the clamping plate cooperates with the rectangular insert of the connector. The electric telescopic rod can adjust the height of the housing according to the pipe diameter. When the motor drives the threaded rod to rotate, the guide groove in the inner cavity of the housing slides with the guide block at the bottom of the threaded pipe to limit the radial displacement of the threaded pipe when the threaded rod rotates, ensuring that the clamping plate moves smoothly along a straight trajectory. The threaded pipe pushes the clamping plate to slide along the rectangular insert, realizing the automatic clamping of the first connector and the second connector. The rectangular through hole and the rectangular insert can also play an auxiliary fixing role. Compared with traditional manual operation, it reduces the input of manpower and avoids the loosening of the connection caused by the manual alignment deviation, thus improving the installation efficiency and accuracy of large-diameter pipe fittings.

[0013] 2. In this utility model, a second annular sealing gasket is fixed in the first annular groove of the first connector, and the second annular sealing gasket of the second connector has a second annular groove. The two fit together to form a double sealing structure, forming multiple sealing barriers, which can effectively resist the high pressure impact of large-diameter water flow and improve the sealing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the left sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the main sectional view of the present invention;

[0017] Figure 4 This is an enlarged structural schematic diagram of point A of the present invention.

[0018] In the diagram: 1. Base; 2. PLC controller; 3. Electric telescopic rod; 4. Motor; 5. Housing; 6. Threaded pipe; 7. Clamping plate; 8. Rectangular through hole; 9. Rectangular insert block; 10. First pipe; 11. First connector; 12. Second connector; 13. Second pipe; 14. Threaded rod; 15. Guide groove; 16. Guide block; 17. Tool groove; 18. Partition plate; 19. Battery slot; 20. Battery; 21. Screw; 22. Fixing block; 23. First annular groove; 24. First annular sealing gasket; 25. Second annular groove; 26. Second annular sealing gasket. 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] 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.

[0021] Example 1:

[0022] Please see Figure 1-4As shown, this utility model provides a stainless steel pipe fitting connection device suitable for large-diameter water supply systems, including a base 1, a first pipe 10, a first connector 11, a second connector 12, and a second pipe 13. Electric telescopic rods 3 are fixedly connected to both the left and right ends of the top of the base 1. A housing 5 is fixedly connected to the top of the electric telescopic rod 3. A motor 4 is fixedly connected to the side of the housing 5. A threaded rod 14 is fixedly connected to the output shaft of the motor 4. A threaded pipe 6 is threadedly connected to the outer surface of the threaded rod 14. A clamping plate 7 is fixedly connected to the other end of the threaded pipe 6. Rectangular through holes 8 are provided at both the front and rear ends of the clamping plate 7. Rectangular inserts 9 are fixedly connected to the left and right sides of the first connector 11 and the second connector 12. The rectangular inserts 9 penetrate the inner cavity of the rectangular through holes 8. A guide groove 15 is provided at the bottom of the inner cavity of the housing 5. A guide block 16 is fixedly connected to the bottom of the threaded pipe 6. The bottom of the guide block 16 is slidably connected to the inner cavity of the guide groove 15.

[0023] This technical solution connects the housing 5 to the electric telescopic rod 3 at the top of the base 1. The motor 4 on the side of the housing 5 drives the threaded rod 14 to threadedly connect to the threaded pipe 6. The end of the threaded rod 14 is fixed with a clamping plate 7. The rectangular through hole 8 of the clamping plate 7 cooperates with the rectangular insert 9 of the connector. The electric telescopic rod 3 can adjust the height of the housing 5 according to the pipe diameter. When the motor 4 drives the threaded rod 14 to rotate, the guide groove 15 in the inner cavity of the housing 5 slides with the guide block 16 at the bottom of the threaded pipe 6 to limit the radial displacement of the threaded pipe 6 when the threaded rod 14 rotates, ensuring that the clamping plate 7 moves smoothly along a straight trajectory. The threaded pipe 6 pushes the clamping plate 7 to slide along the rectangular insert 9, realizing the automatic clamping of the first connector 11 and the second connector 12. The rectangular through hole 8 and the rectangular insert 9 can also play an auxiliary fixing role. Compared with traditional manual operation, this reduces the labor input and avoids the loosening of the connection caused by manual alignment deviation, thus improving the installation efficiency and accuracy of large-diameter pipe fittings.

[0024] Example 2:

[0025] Based on Embodiment 1, this utility model is as follows: Figure 1-4As shown, a first pipe 10 is fixedly connected to a first connector 11. A first annular groove 23 is formed on the right side of the first connector 11, and a second annular sealing gasket 26 is fixedly connected to the inner cavity of the first annular groove 23. A second pipe 13 is fixedly connected to a second connector 12, and a first annular sealing gasket 24 is fixedly connected to the side of the second connector 12. A second annular groove 25 is formed on the left side of the first annular sealing gasket 24, and the first annular sealing gasket 24 is movably connected to the inner cavity of the first annular groove 23. The second annular sealing gasket 26... The base 1 is movably connected to the inner cavity of the second annular groove 25. Fixing blocks 22 are fixedly connected to both the left and right sides of the base 1. Screws 21 are provided on the fixing blocks 22. A battery slot 19 is opened at the left end of the front of the base 1. A storage battery 20 is fixedly connected to the inner cavity of the battery slot 19. A tool slot 17 is opened at the right end of the inner cavity of the base 1. A partition 18 is fixedly connected to the inner cavity of the tool slot 17. A PLC controller 2 is fixedly connected to the left end of the front of the base 1. The output end of the PLC controller 2 is electrically connected to the input end of the electric telescopic rod 3 and the motor 4.

[0026] This technical solution fixes the second annular sealing gasket 26 in the first annular groove 23 of the first connector 11, and opens the second annular groove 25 in the first annular sealing gasket 24 of the second connector 12. The two fit together to form a double sealing structure, forming multiple sealing barriers, which can effectively resist the high pressure impact of large-diameter water flow and improve the sealing effect.

[0027] The working principle of this utility model is as follows: The electric telescopic rod 3 at the top of the base 1 connects to the housing 5. The motor 4 on the side of the housing 5 drives the threaded rod 14 to threadedly connect to the threaded pipe 6. The end of the threaded rod 14 is fixed with a clamping plate 7. The rectangular through hole 8 of the clamping plate 7 cooperates with the rectangular insert 9 of the connector. The electric telescopic rod 3 can adjust the height of the housing 5 according to the pipe diameter. When the motor 4 drives the threaded rod 14 to rotate, the guide groove 15 in the inner cavity of the housing 5 slides with the guide block 16 at the bottom of the threaded pipe 6 to limit the radial displacement of the threaded pipe 6 when the threaded rod 14 rotates, ensuring that the clamping plate 7 moves smoothly along a straight trajectory. The threaded pipe 6 pushes the clamping plate 7 to slide along the rectangular insert 9. The system achieves automated clamping of the first connector 11 and the second connector 12. The rectangular through hole 8 and the rectangular insert 9 can play an auxiliary role in fixing. Compared with traditional manual operation, it reduces the input of manpower and avoids loosening of the connection due to manual alignment deviation, thereby improving the installation efficiency and accuracy of large-diameter pipe fittings. The second annular sealing gasket 26 is fixed in the first annular groove 23 of the first connector 11, and the second annular groove 25 is opened in the first annular sealing gasket 24 of the second connector 12. The two are interlocked to form a double sealing structure, forming multiple sealing barriers, which can effectively resist the high pressure impact of large-diameter water flow and improve the sealing effect.

[0028] 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.

[0029] 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.

[0030] 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 stainless steel pipe fitting connecting device suitable for large pipe diameter water supply system, comprising a base (1), a first pipe (10), a first connecting head (11), a second connecting head (12) and a second pipe (13), characterized in that: Electric telescopic rods (3) are fixedly connected to the top left and right ends of the base (1). A housing (5) is fixedly connected to the top of the electric telescopic rod (3). A motor (4) is fixedly connected to the side of the housing (5). A threaded rod (14) is fixedly connected to the output shaft of the motor (4). A threaded tube (6) is threadedly connected to the outer surface of the threaded rod (14). A clamping plate (7) is fixedly connected to the other end of the threaded tube (6). A rectangular through hole (8) is opened at both the front and rear ends of the clamping plate (7). A rectangular insert (9) is fixedly connected to the left and right sides of the first connector (11) and the second connector (12). The rectangular insert (9) penetrates the inner cavity of the rectangular through hole (8).

2. A stainless steel pipe fitting connection device for large pipe diameter water supply system according to claim 1, characterized in that: The first pipe (10) is fixedly connected to the first connector (11). A first annular groove (23) is provided on the right side of the first connector (11). A second annular sealing gasket (26) is fixedly connected to the inner cavity of the first annular groove (23). The second pipe (13) is fixedly connected to the second connector (12). A first annular sealing gasket (24) is fixedly connected to the side of the second connector (12). A second annular groove (25) is provided on the left side of the first annular sealing gasket (24). The first annular sealing gasket (24) is movably connected to the inner cavity of the first annular groove (23). The second annular sealing gasket (26) is movably connected to the inner cavity of the second annular groove (25).

3. A stainless steel pipe fitting connection device for large pipe diameter water supply system as claimed in claim 1, wherein: The base (1) is fixedly connected to both the left and right sides by fixing blocks (22), and screws (21) are provided on the fixing blocks (22).

4. A stainless steel pipe fitting connection device for large pipe diameter water supply system according to claim 1, characterized in that: The bottom of the inner cavity of the housing (5) is provided with a guide groove (15), and the bottom of the threaded tube (6) is fixedly connected with a guide block (16), and the bottom of the guide block (16) is slidably connected to the inner cavity of the guide groove (15).

5. A stainless steel pipe fitting connection device for large pipe diameter water supply system as claimed in claim 1, wherein: A battery slot (19) is provided on the left side of the front of the base (1), and a storage battery (20) is fixedly connected to the inner cavity of the battery slot (19).

6. A stainless steel pipe fitting connection device for large pipe diameter water supply systems according to claim 1, characterized in that: A tool slot (17) is provided at the right end of the inner cavity of the base (1), and a partition (18) is fixedly connected to the inner cavity of the tool slot (17).

7. A stainless steel pipe fitting connection device for large pipe diameter water supply system as claimed in claim 1, wherein: A PLC controller (2) is fixedly connected to the left end of the front of the base (1). The output end of the PLC controller (2) is electrically connected to the input end of the electric telescopic rod (3) and the motor (4).