External thread reinforced high-sealing pipeline joint

Abstract

The utility model discloses an external thread reinforced high-sealing pipeline joint, belongs to the technical field of pipeline connecting structures, and provides an external thread reinforced high-sealing pipeline joint with more adaptable tools, which comprises a main body, a separation disc is arranged at the central part of the main body, one end of the separation disc is provided with an inserting end, and the other end of the separation disc is a screwing end; a first end face sealing ring is installed at the end, opposite to the screwing end, of the separation disc, single-thread threads are formed in the outer side face of the screwing end, a second end face sealing ring is installed on the end face of the screwing end, the outer side face of the separation disc is a cylindrical face, and a pair of meshing faces located in the opposite directions are formed in the outer side face of the separation disc. The outer side face of the separation disc is further provided with an insertion hole extending inwards. The sealing structures are arranged at the upper end and the lower end of the thread structure, even if threads are abraded due to long-time use, the connector can still keep good high sealing performance, and the connector is long in effective service life, better in sealing performance and higher in pressure resistance stability.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline connection structures, and in particular to an externally threaded reinforced high-sealing pipeline joint. Background Art

[0002] Pipe joints are one of the important components for connecting pipeline structures. For transporting high-pressure fluids, the sealing of the connection between the joint and the pipeline is the most important consideration. Therefore, the connection end of the joint usually adopts a threaded fit with better sealing performance. However, since the thread will wear during the disassembly and assembly process, the sealing effect of the thread will gradually decrease. On the other hand, when disassembling and assembling threaded joints, an appropriate wrench tool must be used. Without a wrench, it is difficult to tighten it into place, and it is also difficult to loosen the thread during disassembly. Summary of the Invention

[0003] The purpose of the present application is to provide an externally threaded reinforced high-sealing pipe joint with more adaptable tools.

[0004] In order to achieve the above objectives, the present application provides an externally threaded reinforced high-sealing pipe joint: it includes a main body, the central part of the main body is a separating disk, one end of the separating disk has an inserting end and the other end is a screw-on end, and the end of the separating disk opposite to the screw-on end is equipped with a first end face sealing ring, the outer side surface of the screw-on end is provided with a single screw thread, and the end face of the screw-on end is equipped with a second end face sealing ring, forming a two-section sealing structure, further improving the sealing performance of the joint end face.

[0005] As a preference, the separating plate is provided with a first configuration groove at one end facing the screw-on end. The first configuration groove is annular and coaxial with the screw-on end. The first end face sealing ring is suitable for being embedded in the first configuration groove to press against the end face of the screw-on pipe.

[0006] As a preference, a second configuration groove is provided on the end face of the screw-on end away from the separating disk. The second configuration groove is annular and coaxial with the screw-on end. The second end face sealing ring is suitable for being embedded in the second configuration groove and is used to press against the stepped surface inside the screw-on pipe.

[0007] Preferably, a fitting groove is provided at one end of the second end face sealing ring, and the inner bottom wall of the second configuration groove also has an inner lining ring suitable for cooperating with the fitting groove to limit the maximum retraction degree of the second end face sealing ring.

[0008] As a preference, the inner wall of the liner ring is flush with the inner wall of the screw-on end, and the inner wall of the second end face sealing ring is flush with the inner wall of the liner ring, so that the second end face sealing ring can easily cross the end face of the liner ring and contact the inner wall of the liner ring after retraction.

[0009] As a preference, a coaxial embedded annular groove is formed on the outer side surface of the plug-in end, and an embedded sealing ring is sleeved in the embedded annular groove of the plug-in end for directly contacting the inner wall of the hose to form an annular sealing surface.

[0010] As a preference, the outer side surface of the separation disk is a cylindrical surface, and the outer side surface of the separation disk is provided with a pair of engaging surfaces located in opposite directions, which are suitable for cooperating with a wrench, and the wrench tool can be used naturally.

[0011] As a preferred embodiment, the outer side surface of the separating plate is further provided with an inwardly extending through hole, which is not connected to the inner cavity of the main body and does not coincide with the occlusal surface. The through hole is suitable for inserting rod-shaped tools and is not limited to using only wrenches, thereby expanding the tools that can be used.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] (1) By providing sealing structures at both ends of the threaded structure, even if the threads are worn due to long-term use, the joint can still maintain good high sealing performance. The joint has a long effective working life, better sealing performance, and higher pressure resistance stability;

[0014] (2) By designing the engaging surface and the through-hole structure in the middle part of the joint, more tools can be used to disassemble and assemble the joint, not just wrenches. There are more tool options, so the flexibility is higher when performing disassembly and assembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the first stereoscopic schematic diagram of the overall structure of the externally threaded reinforced high-sealing pipe joint.

[0016] Figure 2 This is a second stereoscopic schematic diagram of the overall structure of the externally threaded reinforced high-sealing pipe joint.

[0017] Figure 3 This is a first three-dimensional structural sectional view of the external thread reinforced high-seal pipe joint after the sealing member is removed.

[0018] Figure 4 This is a second three-dimensional structural sectional view of the external thread reinforced high-seal pipe joint after the sealing member is removed.

[0019] Figure 5 This is a three-dimensional structural cross-sectional view of the second end face sealing ring of the external thread reinforced high-seal pipe joint.

[0020] In the figure: 1. Embedded sealing ring; 2. Main body; 210. Insertion end; 211. Embedded ring groove; 220. Separation plate; 221. Engaging surface; 222. Insertion hole; 223. First configuration groove; 230. Screw-on end; 231. Single-threaded thread; 232. Second configuration groove; 233. Liner ring; 3. First end face sealing ring; 4. Second end face sealing ring; 401. Fitting groove. DETAILED DESCRIPTION

[0021] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0024] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units expressly listed, but may include other steps or units not expressly listed or inherent to such process, method, product or apparatus.

[0025] like Figure 1-5The external thread reinforced high-sealing pipe joint shown includes a main body 2 made of stainless steel material. The central part of the main body 2 is a separating disc 220 with the largest cross-sectional area. One end of the separating disc 220 has an inserting end 210 and the other end is a screwing end 230. The inserting end 210 and the screwing end 230 are coaxial with the separating disc 220, and the diameters of the inserting end 210 and the screwing end 230 are both smaller than the diameter of the separating disc 220. A first end face sealing ring 3 is installed at the end of the separating disc 220 opposite to the screwing end 230. Specifically, a first configuration groove 223 is provided at one end of the separating disc 220 opposite to the screwing end 230. The screwing end 230 is located in the first configuration groove 223, and the first configuration groove 223 is annular and coaxial with the screwing end 230. The first end face sealing ring 3 made of elastic rubber material is just embedded in the first configuration groove 223, which is used to press the end of the pipe screwed on the screwing end 230 to form an annular sealing surface.

[0026] The outer side surface of the screw-on end 230 is provided with a single screw thread 231 for screwing with the end of the pipe with an internal thread. The end face of the screw-on end 230 is installed with a second end face sealing ring 4. Specifically, the end face of the screw-on end 230 away from the separating plate 220 is provided with a second configuration groove 232. The same second configuration groove 232 is also annular and coaxial with the screw-on end 230. The second end face sealing ring 4 made of elastic rubber material is just embedded in the second configuration groove 232. It should be noted that a fitting groove 401 is usually provided at one end of the second end face sealing ring 4, and the inner bottom wall of the second configuration groove 232 also has an inner lining ring 233, which just cooperates with the fitting groove 401. The inner wall of the inner lining ring 233 is flush with the inner wall of the screw-on end 230. The inner wall of the second end face sealing ring 4 is flush with the inner wall of the inner lining ring 233, so that after the screw-on end 230 enters the pipeline, the second end face sealing ring 4 can fit tightly with the stepped end face inside the pipeline to form a sealing surface. As a result, the screw-on end 230 of the joint has two annular sealing surfaces, which have a better and more stable sealing effect. Moreover, the deformation direction of the second end face sealing ring 4 is different. The first end face sealing ring 3 can only be compressed to fill the gap between the separating disk 220 and the end face of the pipeline, while the second end face sealing ring 4 can shrink inward after being compressed, with an inner diameter smaller than the inner diameter of the inner lining ring 233, and cross the end face of the inner lining ring 233 to contact the inner wall of the inner lining ring 233, thereby forming a segmented stepped sealing surface with higher sealing performance.

[0027] The outer side surface of the plug-in end 210 is provided with a coaxial embedded annular groove 211. There are several embedded annular grooves 211, which are arranged equidistantly along the axis of the plug-in end 210. The plug-in end 210 is provided with an embedded sealing ring 1 in each embedded annular groove 211. The soft and elastic embedded sealing ring 1 directly contacts the inner wall of the pipe outside the plug-in end 210. By putting a clamp structure on the soft pipe jacket and tightening it, multiple sealing surfaces can be formed. Compared with the tightening of threaded fit, the disassembly and assembly operation of the plug-in end 210 will be more convenient, and it also has good sealing performance.

[0028] The outer side surface of the separator disk 220 is a cylindrical surface and does not need to be designed as a hexagonal prism. Instead, a pair of engaging surfaces 221 located in opposite directions are provided on the outer side surface of the separator disk 220 so that it can cooperate with a wrench to easily tighten the screw-on end 230 of the joint or loosen the tightened screw-on end 230. The outer side surface of the separator disk 220 is also provided with an inwardly extending through hole 222. The through hole 222 is not connected to the inner cavity of the main body 2. There are usually two through holes 222, which are symmetrical about the axis center of the separator disk 220. Each through hole 222 passes through the separator disk 220, leaving two openings on the outer side surface of the separator disk 220. The through holes 222 can allow the ends of rod-shaped tools, such as ice picks or needle-nose pliers, to be inserted to form a lever structure, making it more labor-saving to rotate the entire joint.

[0029] Working principle: The connection methods of the two ends of the connector to the pipe are different. The plug-in end 210 is suitable for connection with the hose by plugging in with a quick clamp. The sealing and stability are acceptable, and the advantage is that it is easy to disassemble and assemble; the screw-in end 230 is connected to the hard pipe made of alloy by threaded cooperation. The sealing and stability are very high, but tools are required for disassembly and assembly. The disassembly and assembly tools are not limited to wrenches. Single-rod tools such as ice picks can also achieve quick tightening and loosening. Therefore, the disassembly and assembly flexibility of this connector is relatively high.

[0030] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An external thread reinforced high-seal pipe joint, characterized by: The invention comprises a main body (2), wherein the central portion of the main body (2) is a separation disc (220), one end of the separation disc (220) is provided with an inserting end (210), and the other end is provided with a screw-on end (230), a first end face sealing ring (3) is installed on the end of the separation disc (220) facing the screw-on end (230), a single screw thread (231) is provided on the outer side surface of the screw-on end (230), and a second end face sealing ring (4) is installed on the end surface of the screw-on end (230).

2. The externally threaded reinforced high-seal pipe joint according to claim 1, characterized in that: The separating disc (220) is provided with a first configuration groove (223) at one end thereof facing the screw-on end (230). The first configuration groove (223) is annular and coaxial with the screw-on end (230). The first end face sealing ring (3) is adapted to be embedded in the first configuration groove (223).

3. The externally threaded reinforced high-seal pipe joint according to claim 2, characterized in that: A second configuration groove (232) is provided on the end surface of the screw-on end (230) away from the separation disk (220). The second configuration groove (232) is annular and coaxial with the screw-on end (230). The second end face sealing ring (4) is suitable for being embedded in the second configuration groove (232).

4. The externally threaded reinforced high-seal pipe joint according to claim 3, characterized in that: One end of the second end face sealing ring (4) is provided with a fitting groove (401), and the inner bottom wall of the second configuration groove (232) is also provided with an inner lining ring (233) suitable for matching with the fitting groove (401).

5. The externally threaded reinforced high-seal pipe joint according to claim 4, characterized in that: The inner wall of the inner lining ring (233) is flush with the inner wall of the screw-on end (230), and the inner wall of the second end face sealing ring (4) is flush with the inner wall of the inner lining ring (233).

6. The externally threaded reinforced high-seal pipe joint according to any one of claims 1 to 5, characterized in that: A coaxial inner ring groove (211) is provided on the outer side surface of the plug-in end (210), and an inner sealing ring (1) is sleeved on the inner ring groove (211) of the plug-in end (210).

7. The externally threaded reinforced high-seal pipe joint according to claim 6, characterized in that: The outer side surface of the separation disk (220) is a cylindrical surface. The outer side surface of the separation disk (220) is provided with a pair of engaging surfaces (221) located in opposite directions and suitable for cooperating with a wrench.

8. The externally threaded reinforced high-seal pipe joint according to claim 7, characterized in that: The outer side surface of the separation plate (220) is further provided with an inwardly extending insertion hole (222), the insertion hole (222) is not communicated with the inner cavity of the main body (2), and the insertion hole (222) is suitable for inserting a rod-shaped tool.

Images