Assembly type lining stainless steel connecting piece

Abstract

The utility model discloses an assembly type lining stainless steel connecting piece, and belongs to the technical field of stainless steel composite pipes. Comprising a connecting main pipe, a left connecting sleeve and a right connecting sleeve, the left connecting sleeve and the right connecting sleeve are symmetrically distributed on the left side and the right side of the connecting main pipe and are in threaded connection with the connecting main pipe, adjusting lining pieces connected with the assembling sliding grooves are arranged in the left connecting sleeve, and two arc-shaped buckling plates are hinged to the outer portion of the left connecting sleeve; the left connecting sleeve and the right connecting sleeve are in threaded connection to the left end and the right end of the connecting main pipe respectively, then the adjusting lining pieces are installed in the left connecting sleeve and the right connecting sleeve respectively, installation and detachment are easy, when the connecting pipe is connected with an external composite pipe, necessary size adjustment is conducted on the adjusting lining pieces in the connecting process so as to adapt to pipeline connectors of different sizes, and the connecting efficiency is improved. The universality and adaptability of the connecting piece are enhanced, the outer composite pipe is connected with the arc-shaped buckling plate in a clamped mode, meanwhile, the arc-shaped lining plates are matched to abut against the outer wall of the connecting piece, and the connecting firmness is greatly improved through the two connecting modes.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel composite pipes, and specifically relates to an assembled inner-lined stainless steel connector. Background Art

[0002] A pipeline refers to a device formed by connecting pipes, pipe connectors, valves, etc. for transporting gases, liquids, or fluids with solid particles. Usually, after the fluid is pressurized by a blower, compressor, pump, boiler, etc., it flows from the high-pressure part of the pipeline to the low-pressure part, or it can also be transported by the pressure or gravity of the fluid itself. Pipelines are widely used, mainly in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations. The inner-lined stainless steel composite steel pipe is a steel pipe with a thin-walled stainless steel pipe compounded on its inner wall. This kind of bimetallic composite steel pipe greatly improves the corrosion resistance of the steel pipe during the transportation of water, hot water, gas, natural gas, and oil. It has a smooth surface, small fluid resistance, and retains the advantages of high mechanical strength of the steel pipe, and can be connected by welding, grooving, and threading, with good sealing performance.

[0003] Most of the existing connections between stainless steel composite pipes adopt forms such as welding, threaded connection, or flange connection. The installation process may be more cumbersome, the construction efficiency is low, and when connecting pipes with different sizes or shapes, it may not be possible to adjust flexibly, restricting its scope of application. Relying solely on a single connection method may lead to unstable connections, prone to loosening or leakage. Summary of the Utility Model

[0004] In view of the above problems, the utility model discloses an assembled inner-lined stainless steel connector.

[0005] The technical solution of the utility model is: an assembled inner-lined stainless steel connector, including a connecting main pipe, a left connecting sleeve and a right connecting sleeve symmetrically distributed on the left and right sides of the connecting main pipe and threadedly connected to the connecting main pipe;

[0006] A plurality of assembled sliding grooves are uniformly arranged along the circumferential direction on the inner wall of the left connecting sleeve, and an adjusting inner lining is arranged inside the left connecting sleeve and connected to each of the assembled sliding grooves. Two arc-shaped buckling plates are hinged to the outside of the left connecting sleeve. A plurality of through connection ports are arranged at positions between adjacent assembled sliding grooves on the outer wall of the left connecting sleeve. Plugging columns corresponding to the through connection ports are arranged on the inner walls of the two arc-shaped buckling plates. The structure of the right connecting sleeve is the same as that of the left connecting sleeve.

[0007] Furthermore, arc-shaped sealing strips are arranged on the left and right sides of the arc-shaped buckling plates. A sealing sleeve is sleeved on the outer wall of the plugging column. Sealing rings are arranged at the openings on the sides of the left connecting sleeve and the right connecting sleeve opposite to the connecting main pipe.

[0008] Description: When the external composite pipe is connected to the left connecting sleeve or the right connecting sleeve, plug holes corresponding to the positions of the through connection ports are opened in advance on the external composite pipe. Taking the left connecting sleeve as an example here, the two arc-shaped snap-in plates on the outer wall of the left connecting sleeve are snap-connected to its outer wall, so that the insertion posts are inserted into the corresponding through connection ports and the plug holes on the outer wall of the external composite pipe, so that the external composite pipe is snap-connected to the arc-shaped snap-in plates. At the same time, each arc-shaped inner lining plate is used to abut against its outer wall. Through the two connection methods, the connection reliability is greatly improved. When the arc-shaped snap-in plate is snap-connected to the surface of the left connecting sleeve, the contact part is filled and sealed by the arc-shaped sealing strip. At the same time, after the insertion post is inserted into the corresponding through connection port, the gap between the insertion post and the through connection port is filled by the sealing sleeve on its outer wall. The opening between the outer wall composite pipe and the left connecting sleeve and the right connecting sleeve is sealed by the sealing ring, ensuring the connection tightness between the external composite pipe and the left connecting sleeve, and preventing the leakage of liquid or gas inside the external composite pipe.

[0009] Furthermore, the adjusting inner lining member includes a plurality of arc-shaped inner lining plates respectively connected to each assembly sliding groove in one-to-one correspondence and slidably connected through a spring compression frame, and a plurality of elastic connecting rods arranged between adjacent two of the arc-shaped inner lining plates and distributed along the length direction.

[0010] Description: When the adjusting inner lining member is in use, the distance between adjacent two arc-shaped inner lining plates can be finely adjusted through the elastic connecting rods. At the same time, the distance between the arc-shaped inner lining plate and the inner wall of the left connecting sleeve can be finely adjusted through the elastic action of the spring compression frame, enabling the quick connection of external composite pipes with various apertures. Among them, when the spring compression frame is compressed, the two cross connecting rods hinged in a cross shape slide towards both sides of the outer wall of the arc-shaped inner lining plate and the outer wall of the arc-shaped sliding block. At the same time, the compression spring rod is stretched, so as to achieve the purpose of finely adjusting the distance between the arc-shaped inner lining plate and the inner wall of the left connecting sleeve, realizing the quick connection of external composite pipes with various apertures, and improving the versatility and flexibility.

[0011] Even further, the spring compression frame includes two cross connecting rods hinged in a cross shape and slidably connected to the assembly sliding groove through an arc-shaped sliding block, and a compression spring rod arranged between the two cross connecting rods. The two cross connecting frames can slide along both sides of the outer wall of the arc-shaped inner lining plate and the outer wall of the arc-shaped sliding block respectively.

[0012] Description: When the external composite pipe is inserted into the left connecting sleeve or the right connecting sleeve, the distance between two adjacent arc-shaped inner liners can be finely adjusted through the elastic connecting rod. At the same time, the distance between the arc-shaped inner liner and the inner wall of the left connecting sleeve or the right connecting sleeve can be finely adjusted through the elastic action of the spring compression frame, realizing the quick connection of external composite pipes with various apertures, improving the versatility and flexibility, enhancing the work efficiency, and reducing the cost. When the spring compression frame is compressed, the two cross connecting rods hinged in a cross shape slide towards both sides of the outer wall of the arc-shaped inner liner and the outer wall of the arc-shaped sliding block. At the same time, the compression spring rod is stretched, so as to achieve the purpose of finely adjusting the distance between the arc-shaped inner liner and the inner wall of the left connecting sleeve or the right connecting sleeve.

[0013] Furthermore, an anti-slip connecting pad is arranged on the inner wall of each arc-shaped inner liner. A plurality of anti-slip balls are arranged on the inner wall of the anti-slip connecting pad, and the anti-slip connecting pad is of a detachable structure.

[0014] Description: When each arc-shaped inner liner contacts the outer wall of the external composite pipe, the friction between the arc-shaped inner liner and the outer wall of the external composite pipe is increased through the arrangement of the anti-slip connecting pad, thereby improving the connection reliability between the two.

[0015] Further, a pressure relief valve is arranged on the side wall of the connecting main pipe.

[0016] Description: The service life of the external composite pipe is guaranteed through the pressure relief valve, and the external composite pipe and the connecting main pipe are prevented from bursting due to excessive internal pressure.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) When the assembled inner-lined stainless steel connector of the present utility model is in use, the left connecting sleeve and the right connecting sleeve are respectively threadedly connected to the left and right ends of the connecting main pipe. Then, the adjusting inner liner is respectively installed into the left connecting sleeve and the right connecting sleeve. It is easy to install and disassemble. When connecting with the external composite pipe, the adjusting inner liner makes necessary dimensional adjustments during the connection process to adapt to different sizes of pipe interfaces, enhancing the versatility and adaptability of the connector. The external composite pipe is clamped with the arc-shaped clamping plate by inserting the plug column into the corresponding through connection port and the plug hole on the outer wall of the external composite pipe. At the same time, each arc-shaped inner liner abuts against its outer wall, greatly improving the connection reliability through the two connection methods;

[0019] (2) When the arc-shaped snap plate is snapped onto the surface of the left connecting sleeve, the contact area is filled and sealed by the arc-shaped sealing strip. At the same time, after the insertion post is inserted into the corresponding through connection port, the gap between the insertion post and the through connection port is filled by the sealing sleeve on its outer wall, and the opening between the outer wall composite pipe and the left connecting sleeve and the right connecting sleeve is sealed by the sealing ring, ensuring the connection tightness between the external composite pipe and the left connecting sleeve and preventing the leakage of liquid or gas inside the external composite pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of the left connecting sleeve of the present utility model when it is cut open;

[0021] Figure 2 is the side view of the adjusting inner lining member of the present utility model when it is installed in the left connecting sleeve;

[0022] Figure 3 is the partial schematic diagram of the installation of the arc-shaped inner lining plate in the left connecting sleeve of the present utility model;

[0023] Figure 4 is the structural schematic diagram of the arc-shaped snap plate of the present utility model.

[0024] Wherein, 1 - connecting main pipe, 10 - pressure relief valve, 2 - left connecting sleeve, 20 - assembly sliding groove, 21 - adjusting inner lining member, 210 - spring compression frame, 211 - arc-shaped inner lining plate, 212 - elastic connecting rod, 213 - arc-shaped sliding block, 214 - cross connecting rod, 215 - compression spring rod, 22 - arc-shaped snap plate, 220 - insertion post, 221 - arc-shaped sealing strip, 222 - sealing sleeve, 23 - through connection port, 24 - anti-slip connection pad, 240 - anti-slip ball, 3 - right connecting sleeve, 4 - sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Embodiment 1

[0026] As Figure 1 shown, an assembled inner-lined stainless steel connector includes a connecting main pipe 1, a left connecting sleeve 2 and a right connecting sleeve 3 that are symmetrically distributed on the left and right sides of the connecting main pipe 1 and are threadedly connected to the connecting main pipe 1;

[0027] As Figure 2 、 3As shown in Fig. 4, four assembly sliding grooves 20 are evenly arranged along the circumferential direction on the inner wall of the left connecting sleeve 2, and an adjusting inner lining 21 connected to each assembly sliding groove 20 is arranged inside the left connecting sleeve 2. Two arc-shaped buckling plates 22 are hinged to the outside of the left connecting sleeve 2. The adjusting inner lining 21 includes four arc-shaped inner lining plates 211 respectively connected to each assembly sliding groove 20 in one-to-one correspondence and slidably connected through a spring compression frame 210, and three elastic connecting rods 212 arranged between adjacent two arc-shaped inner lining plates 211 and distributed along the length direction. Three through connection ports 23 are arranged on the outer wall of the left connecting sleeve 2 at positions between adjacent two assembly sliding grooves 20. Plug columns 220 corresponding to the through connection ports 23 are arranged on the inner walls of the two arc-shaped buckling plates 22. The structure of the right connecting sleeve 3 is the same as that of the left connecting sleeve 2. Among them, the elastic connecting rods 212 adopt the prior art;

[0028] Arc-shaped sealing strips 221 are arranged on the left and right sides of the arc-shaped buckling plate 22. A sealing sleeve 222 is sleeved on the outer wall of the plug column 220. A sealing ring 4 is arranged at the opening on the side of the left connecting sleeve 2 and the right connecting sleeve 3 opposite to the connecting main pipe 1. When the arc-shaped buckling plate 22 is buckled with the surface of the left connecting sleeve 2, the contact part is filled and sealed by the arc-shaped sealing strip 221. At the same time, after the plug column 220 is inserted into the corresponding through connection port 23, the gap between the plug column 220 and the through connection port 23 is filled by the sealing sleeve 222 on its outer wall. The opening between the outer wall composite pipe and the left connecting sleeve 2 and the right connecting sleeve 3 is sealed by the sealing ring 4, ensuring the connection sealing performance between the external composite pipe and the left connecting sleeve 2 and preventing the leakage of liquid or gas in the external composite pipe. Among them, the arc-shaped sealing strip 221, the sealing sleeve 222 and the sealing ring 4 all adopt the prior art;

[0029] The spring compression frame 210 includes two cross connecting rods 214 which are slidably connected to the assembly sliding groove 20 through arc-shaped sliding blocks 213 and are cross-hinged, and a compression spring rod 215 arranged between the two cross connecting rods 214. The two cross connecting frames 214 can slide along the outer walls of the arc-shaped inner lining plate 211 and the arc-shaped sliding block 213 on both sides respectively. When the spring compression frame 210 is compressed, the two cross connecting rods 214 in a cross-hinged state slide towards the outer walls of the arc-shaped inner lining plate 211 and the arc-shaped sliding block 213 on both sides. At the same time, the compression spring rod 215 is stretched, so as to achieve the purpose of finely adjusting the distance between the arc-shaped inner lining plate 211 and the inner wall of the left connecting sleeve 2 or the right connecting sleeve 3. Among them, the compression spring rod 215 adopts the prior art;

[0030] A pressure relief valve 10 is arranged on the side wall of the connecting main pipe 1 to ensure the service life of the external composite pipe and avoid the rupture of the external composite pipe and the connecting main pipe 1 due to excessive internal pressure. Among them, the pressure relief valve 10 adopts the prior art;

[0031] On the inner wall of each arc-shaped inner lining plate 211, there is an anti-slip connecting pad 24. On the inner wall of the anti-slip connecting pad 24, there are 10 anti-slip balls 240, and the anti-slip connecting pad 24 is a detachable structure. When each arc-shaped inner lining plate 211 contacts the outer wall of the external composite pipe, due to the setting of the anti-slip connecting pad 24, the friction between the arc-shaped inner lining plate 211 and the outer wall of the external composite pipe is increased, thereby improving the connection reliability between the two. Among them, the anti-slip connecting pad 24 adopts the existing technology.

[0032] Embodiment 2

[0033] This embodiment records a usage method of an assembled inner lining stainless steel connector in Embodiment 1, including the following steps:

[0034] S1. Thread the left connecting sleeve 2 and the right connecting sleeve 3 to the left and right ends of the connecting main pipe 1 respectively, and install the adjusting inner lining member 21 into the left connecting sleeve 2 and the right connecting sleeve 3 respectively. Taking the left connecting sleeve 2 as an example, that is, slide the arc-shaped sliding blocks 213 on the outer wall of the same arc-shaped inner lining plate 211 into the same assembled sliding groove 20 in sequence, and the arc-shaped sliding blocks 213 on the outer walls of the remaining arc-shaped inner lining plates 211 slide into the remaining corresponding assembled sliding grooves 20. At this time, fix each arc-shaped sliding block 213 with bolts. The installation of the adjusting inner lining member 21 in the right connecting sleeve 3 is the same as the above process;

[0035] S2. Pre-drill a plugging hole on the external composite pipe in advance, and insert the external composite pipe into the left connecting sleeve 2, so that the plugging hole on the external composite pipe corresponds to the position of the through connection port 23. At this time, the distance between two adjacent arc-shaped inner lining plates 211 can be finely adjusted through the elastic connecting rod 212. At the same time, the distance between the arc-shaped inner lining plate 211 and the inner wall of the left connecting sleeve 2 can be finely adjusted through the elastic action of the spring compression frame 210 for the quick connection of external composite pipes with various apertures. Among them, when the spring compression frame 210 is compressed, the two cross connecting rods 214 hinged in a cross shape slide towards both sides of the outer wall of the arc-shaped inner lining plate 211 and the outer wall of the arc-shaped sliding block 213. At the same time, the compression spring rod 215 is stretched, so as to achieve the purpose of finely adjusting the distance between the arc-shaped inner lining plate 211 and the inner wall of the left connecting sleeve 2. The installation process of the external composite pipe in the right connecting sleeve 3 is the same as the installation process in the left connecting sleeve 2;

[0036] S3. Buckle the two arc-shaped buckling plates 22 on the outer wall of the left connecting sleeve 2 to its outer wall, so that the plugging column 220 is inserted into the corresponding through connection port 23 and the plugging hole on the outer wall of the external composite pipe, so that the external composite pipe is clamped with the arc-shaped buckling plate 22, and at the same time, cooperate with each arc-shaped inner lining plate 211 to abut against its outer wall. When the internal pressure of the external composite pipe and the connecting main pipe 1 is too high, pressure relief is carried out through the pressure relief valve 10.

Claims

1. An assembled lined stainless steel connector, characterized in that: It comprises a connecting main pipe (1), a left connecting sleeve (2) and a right connecting sleeve (3) which are symmetrically distributed on the left and right sides of the connecting main pipe (1) and are threadedly connected to the connecting main pipe (1); The inner wall of the left connecting sleeve (2) is evenly provided with a plurality of assembly sliding grooves (20) along the circumferential direction, and an adjusting lining member (21) connected to each of the assembly sliding grooves (20) is provided inside the left connecting sleeve (2). Two arc-shaped buckle plates (22) are hingedly connected to the outside of the left connecting sleeve (2). The adjusting lining member (21) includes a plurality of arc-shaped lining plates (211) which are connected to each of the assembly sliding grooves (20) in a one-to-one correspondence and slidably connected through a spring compression frame (210), and a plurality of elastic connecting rods (212) which are arranged between two adjacent arc-shaped lining plates (211) and distributed along the length direction. A plurality of through connection ports (23) are provided on the outer wall of the left connecting sleeve (2) and located between two adjacent assembly sliding grooves (20). The inner walls of the two arc-shaped buckle plates (22) are provided with plug-in columns (220) corresponding to the through connection ports (23). The structure of the right connecting sleeve (3) is the same as that of the left connecting sleeve (2).

2. The assembled lined stainless steel connector according to claim 1, characterized in that: The left and right sides of the arc-shaped buckle plate (22) are provided with arc-shaped sealing strips (221), the outer wall of the plug-in column (220) is provided with a sealing sleeve (222), and the openings of the left connecting sleeve (2) and the right connecting sleeve (3) on the side opposite to the connecting main pipe (1) are provided with sealing rings (4).

3. The assembled lined stainless steel connector according to claim 1, characterized in that: The spring compression frame (210) comprises two cross-connecting rods (214) which are slidably connected to the assembly sliding groove (20) through an arc-shaped sliding block (213) and are hinged in a cross shape, and a compression spring rod (215) arranged between the two cross-connecting rods (214). The two cross-connecting rods (214) can slide along the outer wall of the arc-shaped inner lining plate (211) and the outer wall of the arc-shaped sliding block (213) respectively.

4. The assembled lined stainless steel connector according to claim 1, characterized in that: A pressure relief valve (10) is provided on the side wall of the connecting main pipe (1).

5. The assembled lined stainless steel connector according to claim 1, characterized in that: An anti-skid connection pad (24) is provided on the inner wall of each arc-shaped inner lining plate (211), a plurality of anti-skid balls (240) are provided on the inner wall of the anti-skid connection pad (24), and the anti-skid connection pad (24) is a detachable structure.

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