Rotary flange straight pipe structure

Abstract

The utility model discloses a kind of rotary flange straight pipe structures, including rectangular hollow tube, the lower convex pipe integrally formed in the downward of rectangular hollow tube bottom end center position and the double-flange hollow pipe connector of lower convex pipe lower end port bolted installation, the port joint surface position of lower convex pipe, double-flange hollow pipe connector is equipped with inner sealing ring, the outer wall of lower convex pipe integrally formed with upper flange plate, the surface of double-flange hollow pipe connector one end integrally formed with the middle layer flange plate for and upper flange plate bolted connection.The utility model is when replacing the direction of rectangular hollow tube and external pipeline pipe end, adjust the bolted connection orientation of lower convex pipe, double-flange hollow pipe connector can, to thereby not need to disassemble complex component, effectively improve the adjustment efficiency of pipeline system, especially in the occasion needing frequent adjustment pipeline direction or layout, significantly save maintenance and debugging time.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, specifically a rotating flange straight pipe structure. Background Technology

[0002] Rotary flange straight pipes play a vital role in piping systems for connection, regulation, and maintenance, and are widely used in industries such as water purification and heating. Their main function is to tightly connect different pipe sections, ensuring the continuity of fluid flow and the system's sealing, while also providing flexibility in adjusting the pipe direction, facilitating fine-tuning during installation and subsequent maintenance. Its structure consists of a pipe body, a flange, and a gasket. The pipe body is usually made of corrosion-resistant material, the flange has multiple holes for easy bolt fixing, and the gasket ensures no leakage. When using it, first clean the pipe end and flange face. During installation, connect the two ends with bolts, rotate to adjust the pipe direction as needed, and then tighten the bolts to ensure a seal. Finally, perform a pressure or fluid test to confirm no leakage. However, at present, when adjusting the direction of straight pipes through the flange and pipe end, the flange bolts on the straight pipe need to be removed before the pipe end can be turned. That is, the bolts must be removed every time the direction needs to be adjusted. The steps of disassembly, adjustment, and retightening are cumbersome, especially in large pipelines or multi-section connections, which consumes a lot of time and manpower. In addition, repeated disassembly and assembly may also cause wear on the bolt threads or damage to the flange face, affecting the service life of the pipe end and the flange straight pipe. Utility Model Content

[0003] The purpose of this utility model is to provide a rotating flange straight pipe structure, in which the bottom end of a rectangular hollow pipe is integrally formed with a convex pipe for guiding liquid, and a double flange hollow pipe is bolted to its lower end for bolting to the flange face of an external pipe. When changing the direction of the rectangular hollow pipe and the external pipe end, the bolting orientation of the convex pipe and the double flange hollow pipe can be adjusted to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rotating flange straight pipe structure, comprising a rectangular hollow pipe, a downwardly convex pipe integrally formed at the center of the bottom end of the rectangular hollow pipe, and a double-flange hollow pipe bolted to the lower end of the downwardly convex pipe. An inner sealing ring is installed at the port mating surface of the downwardly convex pipe and the double-flange hollow pipe. An upper flange is integrally formed on the outer wall of the downwardly convex pipe. A middle flange for bolting to the upper flange is integrally formed at one end of the surface of the double-flange hollow pipe. A lower flange is integrally formed on the lower outer wall of the double-flange hollow pipe.

[0005] Preferably, the rectangular hollow tube has an integrally formed external threaded straight tube on both the left and right ends.

[0006] Preferably, the end of the externally threaded straight tube away from the rectangular hollow tube is threaded with a threaded connector.

[0007] Preferably, the upper end of the lower convex tube is integrally formed with an annular upper convex part, and the inner sealing ring is embedded at the edge position of the top of the annular upper convex part.

[0008] Preferably, an annular rim is integrally formed at the edge of the bottom end of the lower convex tube. The inner diameter of the annular rim is equal to the outer diameter of the annular upper convex part, and the annular rim and the annular upper convex part are concentrically fitted together. An outer sealing ring is embedded on the inner wall of the annular rim.

[0009] Preferably, the outer diameter of the lower flange is larger than the outer diameters of the middle flange and the upper flange, and the double-flange hollow pipe is made of stainless steel.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This rotating flange straight pipe structure, through the arrangement of a rectangular hollow pipe, a convex lower pipe, an inner sealing ring, and a double-flanged hollow connecting pipe, etc., in a mutually cooperating manner, has a convex lower pipe integrally formed at the bottom end of the rectangular hollow pipe for guiding liquid. The convex lower pipe has a double-flanged hollow connecting pipe bolted to its lower end for bolting to the flange face of an external pipe. When changing the direction of the rectangular hollow pipe and the external pipe end, the bolting orientation of the convex lower pipe and the double-flanged hollow connecting pipe can be adjusted, thus eliminating the need to disassemble complex components and effectively improving the adjustment efficiency of the pipeline system. Especially in situations where frequent adjustments to pipeline direction or layout are required, it significantly saves maintenance and debugging time. Secondly, since the convex pipe and the rectangular hollow pipe are integrally formed, the potential leakage risk of multiple connection points and bolts is avoided. The design of the double-flange hollow pipe makes the fit between the connection surfaces tighter and the sealing effect better. When adjusting, you only need to rotate or adjust the orientation of the double-flange hollow pipe and the bolted convex pipe to achieve the change of direction, without worrying about the sealing surface offset or the sealing gasket damage. This reduces the risk of damage to the pipe ends caused by frequent disassembly and assembly, and extends the service life of the pipeline. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0015] Figure 5This is a three-dimensional cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Rectangular hollow pipe; 101. Externally threaded straight pipe; 102. Threaded joint; 2. Lower convex pipe; 201. Upper flange; 3. Double flange hollow pipe; 301. Middle flange; 302. Lower flange; 4. Annular rim; 5. Annular upper convex part; 6. Inner sealing ring; 7. Outer sealing ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figure 1-5 An embodiment of this utility model provides a rotating flange straight pipe structure, including a rectangular hollow pipe 1, a downwardly convex pipe 2 integrally formed at the center of the bottom end of the rectangular hollow pipe 1, and a double flange hollow pipe 3 bolted to the lower end of the downwardly convex pipe 2. An inner sealing ring 6 is installed at the port joint surface of the downwardly convex pipe 2 and the double flange hollow pipe 3. An upper flange 201 is integrally formed on the outer wall of the downwardly convex pipe 2. A middle flange 301 for bolting to the upper flange 201 is integrally formed at one end of the surface of the double flange hollow pipe 3. A lower flange 302 is integrally formed on the lower outer wall of the double flange hollow pipe 3.

[0019] The outer diameter of the lower flange 302 is larger than that of the middle flange 301 and the upper flange 201. The double flange hollow pipe 3 is made of stainless steel. The corrosion resistance of stainless steel ensures that the double flange hollow pipe 3 can maintain structural integrity and stable performance in these environments, thus extending its service life.

[0020] The rectangular hollow tube 1 has good cross-sectional stability and strong resistance to bending and torsion, making it suitable for bearing certain pressure and mechanical loads. Both the left and right ends of the rectangular hollow tube 1 are integrally formed with external threaded straight tubes 101. The end of the external threaded straight tube 101 away from the rectangular hollow tube 1 is threaded with a threaded connector 102. The threaded connector 102 is screwed onto the port of the external threaded straight tube 101, so that the threaded connector 102, the external threaded straight tube 101, the lower convex tube 2, and the double flange hollow tube 3 form a T-shaped chamber channel.

[0021] The upper end of the lower convex pipe 2 is integrally formed with an annular upper convex part 5. The inner sealing ring 6 is embedded at the edge of the top of the annular upper convex part 5. After the upper flange 201 and the middle flange 301 are bolted together, the inner sealing ring 6 forms a sealing layer on the end joint surface of the lower convex pipe 2 and the double flange hollow pipe 3 to effectively isolate the external environment and prevent gas or liquid leakage.

[0022] An annular rim 4 is integrally formed at the edge of the bottom end of the lower convex tube 2. The inner diameter of the annular rim 4 is equal to the outer diameter of the annular upper convex part 5. The annular rim 4 and the annular upper convex part 5 are concentrically fitted together. An outer sealing ring 7 is inlaid on the inner wall of the annular rim 4.

[0023] The annular rim 4 is located on the outer wall of the double-flange hollow pipe 3 above the middle flange 301. Then, the outer sealing ring 7 is between the inner wall of the annular rim 4 and the outer wall of the double-flange hollow pipe 3, forming a second protective layer to further prevent external pollutants from entering the pipeline system and to avoid media leakage to the external environment.

[0024] In this embodiment, the valves of the relevant pipelines are first closed to cut off the supply of liquid or gas, preventing leakage or splashing accidents during disassembly. Residual media in the pipelines are also discharged to ensure the disassembly area is clean and dry, reducing the risk of slipping or accidental contact during operation. The operator connects the lower end of the convex pipe 2 and the upper end of the double-flanged hollow pipe 3, ensuring concentric connection. At this point, the inner sealing ring 6 is located at the mating surface of the lower end of the convex pipe 2 and the upper end of the double-flanged hollow pipe 3. The upper flange 201 and the middle flange 301 are then fixed together using bolts. After the rectangular hollow pipe 1 is bolted to the double-flanged hollow pipe 3 via the convex pipe 2, the lower end of the double-flanged hollow pipe 3 is bolted to the pipe end flange of the pipeline to be connected via the lower flange 302.

[0025] When preparing to reverse the direction of the rectangular hollow pipe 1, the operator releases the bolting restriction between the middle flange 301 and the upper flange 201, and then rotates the lower convex pipe 2, so that the lower convex pipe 2 and the rectangular hollow pipe 1 rotate around the central axis of the double flange hollow pipe 3 to adjust the orientation of the rectangular hollow pipe 1. After the adjustment is completed, the upper flange 201 and the middle flange 301 are re-bolted to ensure a firm connection.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rotating flange straight pipe structure, characterized in that: The device includes a rectangular hollow tube (1), a downwardly convex tube (2) integrally formed at the center of the bottom end of the rectangular hollow tube (1), and a double-flange hollow pipe (3) bolted to the lower end of the downwardly convex tube (2). An inner sealing ring (6) is installed at the joint surface of the port of the downwardly convex tube (2) and the double-flange hollow pipe (3). An upper flange (201) is integrally formed on the outer wall of the downwardly convex tube (2). A middle flange (301) for bolting to the upper flange (201) is integrally formed at one end of the surface of the double-flange hollow pipe (3). A lower flange (302) is integrally formed on the lower outer wall of the double-flange hollow pipe (3).

2. The rotary flange straight pipe structure according to claim 1, characterized in that: The rectangular hollow tube (1) has an externally threaded straight tube (101) integrally formed on both the left and right ends.

3. The rotary flange straight pipe structure according to claim 2, characterized in that: The threaded straight tube (101) is threaded with a threaded connector (102) at the end away from the rectangular hollow tube (1).

4. The rotary flange straight pipe structure according to claim 1, characterized in that: The upper end of the lower convex tube (2) is integrally formed with an annular upper convex part (5), and the inner sealing ring (6) is embedded at the edge of the top of the annular upper convex part (5).

5. A rotary flange straight pipe structure according to claim 4, characterized in that: An annular rim (4) is integrally formed at the edge of the bottom end of the lower convex tube (2). The inner diameter of the annular rim (4) is equal to the outer diameter of the annular upper convex part (5). The annular rim (4) and the annular upper convex part (5) are concentrically fitted together. An outer sealing ring (7) is inlaid on the inner wall of the annular rim (4).

6. A rotary flange straight pipe structure according to claim 1, characterized in that: The outer diameter of the lower flange (302) is larger than the outer diameter of the middle flange (301) and the upper flange (201), and the double flange hollow pipe (3) is made of stainless steel.

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