Stainless steel pipe coupling

Abstract

The utility model relates to the field of connecting joint, concretely relates to a stainless steel pipe connecting joint, including threaded joint, both ends of threaded joint are fixedly connected with sealing washer, the inside of threaded joint is provided with sealing mechanism, and the outer wall of both ends of threaded joint is provided with external thread, protection mechanism, protection mechanism includes the rotation lever, and the inner wall of threaded joint is rotatably connected in rotation lever. Through the design of protection mechanism, after the separation of stainless steel pipe and threaded joint, the inside of threaded joint can be quickly plugged, thereby can avoid the impurity such as dust, silt, metal scrap into the inside of threaded joint, to ensure that the fluid in pipeline does not exist impurity when using subsequently, and simultaneously cooperate the design of sealing mechanism, can after the butt joint of stainless steel pipe and threaded joint, the gap between stainless steel pipe and threaded joint is sealed from the inside of threaded joint, thereby can further improve the sealing property of threaded joint, effectively avoid the situation of fluid leakage.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically to a stainless steel pipe connector. Background Technology

[0002] Stainless steel fittings are key components for assembling and sealing stainless steel piping systems. Their design must balance connection strength, sealing performance, and corrosion resistance. These fittings are typically made of stainless steel that matches the pipe material, enabling them to adapt to various operating conditions, such as high-temperature, high-pressure, or corrosive fluid transmission scenarios.

[0003] Threaded fittings achieve quick connection between two pipes by precisely engaging an external thread on the fitting with a threaded nut fitted onto the end of the stainless steel pipe. This connection method requires no complex tools or professional welding skills; operators can simply rotate the nut to complete the installation. The simple connection method greatly facilitates subsequent maintenance and modifications, making it particularly suitable for piping systems that require frequent disassembly and reassembly or temporary installation.

[0004] When connected pipes are disassembled for maintenance, the internal structure of the joint is completely exposed after the pipes are separated from the joint. If impurities such as dust, mud, and metal shavings enter the joint at this time, these impurities will flow with the fluid during subsequent reassembly and use. This will not only contaminate the purity of the fluid but may also block the pipes, affecting the normal operation of the system and potentially damaging downstream equipment. Therefore, it is necessary to invent a stainless steel pipe connection joint to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a stainless steel pipe connector. When the stainless steel pipe is connected to the threaded connector, the push rod, in conjunction with the connecting rod and the protrusion, drives the rotating rod to rotate inside the threaded connector. The rotation of the threaded rod causes the baffle to tilt, thus enabling the threaded connector to be open and allowing fluid flow. When the stainless steel pipe is separated from the threaded connector, the spring pushes the push rod, which, in conjunction with the connecting rod, the protrusion, and the rotating rod, drives the baffle to rotate to a vertical position. The vertical baffle blocks the inside of the threaded connector, thus protecting the inside of the threaded connector and preventing dust, mud, metal shavings, and other impurities from entering the threaded connector, ensuring that the fluid in the pipeline is free of impurities during subsequent use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel pipe connection joint, comprising...

[0007] A threaded connector, wherein both ends of the threaded connector are fixedly connected to a sealing gasket, the threaded connector is provided with a sealing mechanism inside, and the outer walls of both ends of the threaded connector are provided with external threads;

[0008] A protective mechanism includes a rotating rod rotatably connected to the inner wall of a threaded joint. A baffle is fixedly connected through the inner wall of the rotating rod, and a protrusion is fixedly connected to the outer wall of the rotating rod. A push rod is slidably connected through the inner wall of the threaded joint. One end of the push rod extends to the outside of the threaded joint, and a connecting rod is hinged to the other end of the push rod. A spring is fixedly connected to the outside of the push rod.

[0009] Preferably, the sealing mechanism includes a collar, which is slidably connected to the inner wall of the threaded joint, and a sealing ring is fixedly connected to the outer wall of the collar.

[0010] Preferably, the inner wall of the threaded joint is hinged with a rocker arm, one end of which is hinged to a first connecting rod, and the other end of which is hinged to a second connecting rod.

[0011] Preferably, the end of the first connecting rod away from the rocker arm is hinged to the side wall of the protrusion.

[0012] Preferably, the end of the second connecting rod away from the swing arm is hinged to the outer wall of the collar.

[0013] Preferably, the push rod is an "L"-shaped rod structure, the end of the spring away from the push rod is fixedly connected to the inner wall of the threaded joint, and the end of the connecting rod away from the push rod is hinged to the side wall of the protrusion.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This invention, through the design of a protective mechanism, can quickly block the interior of the threaded joint after the stainless steel pipe is separated from it, thereby preventing impurities such as dust, mud, and metal shavings from entering the interior of the threaded joint and ensuring that the fluid in the pipeline is free of impurities during subsequent use. At the same time, in conjunction with the design of a sealing mechanism, after the stainless steel pipe and the threaded joint are connected, the gap between the stainless steel pipe and the threaded joint can be sealed from the inside of the threaded joint, thereby further improving the sealing performance of the threaded joint and effectively preventing fluid leakage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the threaded joint of this utility model in the state of being connected with a stainless steel pipe;

[0019] Figure 3 This utility model Figure 2 A schematic diagram of the cross-sectional structure under the specified conditions;

[0020] Figure 4 This is a schematic diagram of the overall structure of the protective mechanism and the sealing mechanism of this utility model;

[0021] Figure 5 This utility model Figure 1 A magnified structural diagram at point A;

[0022] Figure 6 This utility model Figure 3 A magnified structural diagram at point B.

[0023] Legend:

[0024] 1. Threaded connector; 2. Sealing gasket; 3. Protective mechanism; 31. Rotating rod; 32. Baffle; 33. Protrusion; 34. Push rod; 35. Connecting rod; 36. Spring; 4. Sealing mechanism; 41. Collar; 42. Sealing ring; 43. Swing rod; 44. First connecting rod; 45. Second connecting rod; 5. External thread. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1 - Figure 3 A stainless steel pipe connector shown includes a threaded connector 1 and a protective mechanism 3.

[0027] Both ends of the threaded connector 1 are fixedly connected with sealing gaskets 2. The sealing gaskets 2 can seal the ends of the stainless steel pipe and the threaded connector 1. The threaded connector 1 is equipped with a sealing mechanism 4 inside. The outer walls of both ends of the threaded connector 1 are provided with external threads 5. The external threads 5 are used for the connection between the stainless steel pipe and the threaded connector 1. The threaded connection method can facilitate the disassembly of the stainless steel pipe and the threaded connector 1. When the threaded connector 1 reaches the end of its service life and causes functional failure, the threaded connection method can facilitate the replacement of the threaded connector 1.

[0028] like Figure 3 - Figure 5As shown, the protective mechanism 3 includes a rotating rod 31, which is rotatably connected to the inner wall of the threaded joint 1. A baffle 32 is fixedly connected to the inner wall of the rotating rod 31. The rotation of the rotating rod 31 can drive the baffle 32 to rotate to an inclined or vertical state. When the baffle 32 rotates to a nearly horizontal state, the baffle 32 no longer blocks the threaded joint 1, and the inside of the threaded joint 1 is in a through state. The nearly horizontal baffle 32 will not cause too much resistance to the fluid and will not affect the normal flow of fluid in the pipeline. When the baffle 32 is in a vertical state, the baffle 32 will block the inside of the threaded joint 1 to prevent dust, mud, metal debris and other impurities from entering the inside of the threaded joint 1. The function of the baffle 32 is similar to that of a butterfly valve. A protrusion 33 is fixedly connected to the outer wall of the rotating rod 31. The rotating rod 31, the protrusion 33 and the baffle 32 can be made of food-grade 316L stainless steel. Made of steel, the inner wall of the threaded joint 1 is slidably connected to a push rod 34. The push rod 34 has an "L"-shaped rod structure. One end of the push rod 34 extends to the outside of the threaded joint 1, and the other end of the push rod 34 is hinged to a connecting rod 35. The push rod 34 and the connecting rod 35 can be made of food-grade 316L stainless steel. The end of the connecting rod 35 away from the push rod 34 is hinged to the side wall of the protrusion 33. While sliding, the push rod 34, in conjunction with the connecting rod 35 and the protrusion 33, can drive the rotating rod 31 to rotate on the inner wall of the threaded joint 1. A spring 36 is fixedly connected to the outside of the push rod 34. The end of the spring 36 away from the push rod 34 is fixedly connected to the inner wall of the threaded joint 1. The spring 36 can be made of food-grade 316L stainless steel. The elasticity of the spring 36 can push the push rod 34, causing it to slide and reset on the inner wall of the threaded joint 1. At the same time, the push rod 34 will slide out of the threaded joint 1 again and protrude outward.

[0029] like Figure 4 - Figure 6As shown, the sealing mechanism 4 includes a collar 41, which is slidably connected to the inner wall of the threaded joint 1. A sealing ring 42 is fixedly connected to the outer wall of the collar 41. By sliding the collar 41, the sealing ring 42 can be moved to the gap at the connection between the threaded joint 1 and the stainless steel pipe. At this time, the sealing ring 42 can seal the gap between the stainless steel pipe and the threaded joint 1 from the inside. A rocker arm 43 is hinged to the inner wall of the threaded joint 1. One end of the rocker arm 43 is hinged to a first connecting rod 44, and the other end of the rocker arm 43 is hinged to a second connecting rod 45. The end of the first connecting rod 44 away from the rocker arm 43 is hinged to the protrusion 33. On the side wall, when the rotating rod 31 drives the baffle 32 to gradually rotate to an inclined state, the protrusion 33 on the outer wall of the rotating rod 31 will push the first connecting rod 44, so that the first connecting rod 44 pushes the rocker arm 43. At this time, the rocker arm 43 will rotate on the inner wall of the threaded joint 1. The end of the second connecting rod 45 away from the rocker arm 43 is hinged to the outer wall of the collar 41. The collar 41, the rocker arm 43, the first connecting rod 44 and the second connecting rod 45 can all be made of food-grade 316L stainless steel. While the rocker arm 43 is rotating, it will push the second connecting rod 45, so that the second connecting rod 45 pushes the collar 41. At this time, the collar 41 will slide on the inner wall of the threaded joint 1.

[0030] The working principle of this utility model is as follows: When the stainless steel pipe is connected to the external thread 5 through the internal thread nut at its end, the end of the stainless steel pipe will be tightly pressed against the end of the threaded joint 1. At this time, the sealing gasket 2 can be used to seal the connection between the stainless steel pipe and the threaded joint 1. At the same time, after the stainless steel pipe is connected to the threaded joint 1, it will push the protruding push rod 34 into the interior of the threaded joint 1. At this time, the push rod 34 will compress the spring 36 and push the connecting rod 35, so that the connecting rod 35 pushes the protrusion 33. At this time, the protrusion 33 will push the rotating rod 31, so that the rotating rod 31 will rotate on the inner wall of the threaded joint 1. At the same time, the rotating rod 31 will drive the baffle 32 to rotate to an inclined state.

[0031] When the stainless steel pipe needs to be disassembled and repaired, the fluid in the pipe is first cut off by the valve, and then the stainless steel pipe is separated from the threaded joint 1. After the stainless steel pipe is separated from the threaded joint 1, the elasticity of the spring 36 can push the push rod 34 to slide and reset on the inner wall of the threaded joint 1. At the same time, the push rod 34 will slide out of the threaded joint 1 again and protrude outward. Meanwhile, the push rod 34 will pull the connecting rod 35, which will pull the protrusion 33. At this time, the protrusion 33 will drive the rotating rod 31 to rotate on the inner wall of the threaded joint 1. At the same time, the rotating rod 31 will drive the baffle 32 to rotate to a vertical position. At this time, the vertical baffle 32 can block the inside of the threaded joint, thereby preventing dust, mud, metal debris and other impurities from entering the inside of the threaded joint 1, so as to ensure that there are no impurities in the fluid in the pipe during subsequent use.

[0032] When the rotating rod 31 drives the baffle 32 to gradually rotate to an inclined state, the protrusion 33 on the outer wall of the rotating rod 31 will push the first connecting rod 44, causing the first connecting rod 44 to push the swing rod 43. At this time, the swing rod 43 will rotate on the inner wall of the threaded joint 1. While rotating, the swing rod 43 will push the second connecting rod 45, causing the second connecting rod 45 to push the collar 41. At this time, the collar 41 will slide on the inner wall of the threaded joint 1 and gradually approach the end of the threaded joint 1. The sliding of the collar 41 can drive the sealing ring 42 to move to the gap at the connection between the threaded joint 1 and the stainless steel pipe. At this time, the sealing ring 42 can seal the gap between the stainless steel pipe and the threaded joint 1 from the inside. At the same time, the sealing gasket 2 can seal the end of the stainless steel pipe and the threaded joint 1, which can greatly improve the sealing performance of the threaded joint 1, thereby avoiding fluid leakage.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A stainless steel pipe coupling joint, characterized by: include A threaded connector (1) is provided with sealing gaskets (2) fixedly connected to both ends of the threaded connector (1), and a sealing mechanism (4) is provided inside the threaded connector (1). External threads (5) are provided on the outer walls of both ends of the threaded connector (1). The protective mechanism (3) includes a rotating rod (31), which is rotatably connected to the inner wall of the threaded joint (1). A baffle (32) is fixedly connected through the inner wall of the rotating rod (31), and a protrusion (33) is fixedly connected to the outer wall of the rotating rod (31). A push rod (34) is slidably connected through the inner wall of the threaded joint (1). One end of the push rod (34) extends to the outside of the threaded joint (1), and a connecting rod (35) is hinged to the other end of the push rod (34). A spring (36) is fixedly connected to the outside of the push rod (34).

2. A stainless steel pipe coupling according to claim 1, characterized in that: The sealing mechanism (4) includes a collar (41), which is slidably connected to the inner wall of the threaded joint (1), and a sealing ring (42) is fixedly connected to the outer wall of the collar (41).

3. A stainless steel pipe coupling according to claim 2, wherein: The inner wall of the threaded joint (1) is hinged with a rocker arm (43), one end of the rocker arm (43) is hinged with a first connecting rod (44), and the other end of the rocker arm (43) is hinged with a second connecting rod (45).

4. A stainless steel pipe coupling according to claim 3, characterized in that: The end of the first link (44) away from the rocker arm (43) is hinged to the side wall of the protrusion (33).

5. A stainless steel pipe coupling according to claim 3 wherein: The end of the second link (45) away from the swing arm (43) is hinged to the outer wall of the collar (41).

6. A stainless steel pipe connector according to claim 1, characterized in that: The push rod (34) is an "L"-shaped rod structure. The end of the spring (36) away from the push rod (34) is fixedly connected to the inner wall of the threaded joint (1). The end of the connecting rod (35) away from the push rod (34) is hinged to the side wall of the protrusion (33).

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