Corrosion-resistant flange for chemical pipeline

Abstract

The utility model discloses a corrosion-resistant flange of a chemical pipeline, which belongs to the technical field of flanges and comprises a pipe body I and a pipe body II, a protective ring I is arranged outside the pipe body I, a protective ring II is arranged outside the pipe body II, two mounting plates I are connected outside the protective ring I, two mounting plates II are connected outside the protective ring II, and the two mounting plates II are connected outside the protective ring II. One end of the first pipe body is connected with a first flange, one end of the second pipe body is connected with a second flange, and a rotating rod is rotationally connected into the first mounting plate. According to the corrosion-resistant flange for the chemical pipeline, the first mounting plate, the second mounting plate, a rotating rod, an elastic telescopic rod, a first semicircular plate, a fixing plate and a second semi-circle plate are arranged, and through cooperation of the elastic telescopic rod, the first semicircular plate and the second semi-circle plate, the first mounting plate and the second mounting plate can achieve the clamping function; and after being fixed, the protective ring I and the protective ring II can play a certain sealing role on the bolt and the nut, so that the bolt and the nut are prevented from rusting due to long-time exposure.

Description

Technical Field

[0001] The utility model belongs to the technical field of flanges, in particular to a corrosion-resistant flange for a chemical pipeline. Background Art

[0002] Chemical pipelines are devices connected by pipes, pipe connectors and valves for conveying gas, liquid or fluid with solid particles. Chemical pipelines need to be fixed by flanges when connected to each other. Flanges are parts that connect shafts to each other and are used for connection between pipe ends. At present, flanges are mainly fixed to the two ends of chemical pipelines by bolts. However, most flanges do not have a sealing structure, and it is difficult to seal the flanges and their bolts. When the bolts are exposed to the outside for a long time, they are prone to rust, which may cause damage to the joints of the chemical pipelines and leakage. Utility Model Content

[0003] In order to overcome the above-mentioned defects, the utility model provides a corrosion-resistant flange for a chemical pipeline, which solves the problem that most flanges do not have a sealing structure, making it difficult to seal the flange and its bolts, and the bolts are prone to rust when exposed to the outside for a long time, which may cause damage to the connection of the chemical pipeline and leakage.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant flange for a chemical pipeline, comprising a pipe body 1 and a pipe body 2, the pipe body 1 is provided with a protective ring 1 outside, the pipe body 2 is provided with a protective ring 2 outside, the protective ring 1 is connected to two mounting plates 1 outside, the protective ring 2 is connected to two mounting plates 2 outside, one end of the pipe body 1 is connected to flange 1, one end of the pipe body 2 is connected to flange 2, a rotating rod is rotatably connected inside the mounting plate 1, an elastic telescopic rod is connected outside the rotating rod, one end of the elastic telescopic rod is connected to a fixed plate, one side of the fixed plate is connected to a semicircular plate 1, an arc groove is opened in the mounting plate 1, a bevel is provided in the mounting plate 1, and a semicircle plate 2 is rotatably connected inside the mounting plate 2.

[0005] As a further solution of the utility model: bolts are arranged in the second flange, and the bolts are clamped in the first flange.

[0006] As a further solution of the utility model: the external thread of the bolt is connected with a nut, and the nut is overlapped with the flange.

[0007] As a further solution of the utility model: the semicircular plate 1 is rotatably connected in the mounting plate 1, the fixed plate is slidably connected in the arc groove, and the mounting plate 1 is clamped with the mounting plate 2.

[0008] As a further solution of the utility model: a slide groove is provided in the tube body 1, a slider is connected in the protective ring 1, and the slider is slidably connected in the slide groove.

[0009] As a further solution of the utility model: a sealing rubber ring is connected to one side of the second protective ring, and the second protective ring is clamped with the first protective ring.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The corrosion-resistant flange of the chemical pipeline is provided with a mounting plate 1, a mounting plate 2, a rotating rod, an elastic telescopic rod, a semicircular plate 1, a fixed plate and a semicircular plate 2. Since the structures in the mounting plate 1 and the mounting plate 2 are the same, when the beveled edge contacts the semicircular plate 2, the semicircular plate 2 will rotate accordingly, and the semicircular plate 1 will pull the elastic telescopic rod when rotating. When the mounting plate 1 and the mounting plate 2 are fitted to each other, the semicircular plate 1 and the semicircular plate 2 will contact each other, and the semicircular plate 1 will be restored by the elastic force in the elastic telescopic rod, and the semicircular plate 2 will also be restored accordingly. The flange is repositioned so that the semicircular plate 1 and the semicircular plate 2 can be both clamped in the mounting plate 1 and the mounting plate 2. The flange enables the mounting plate 1 and the mounting plate 2 to achieve the clamping function through the cooperation between the elastic telescopic rod, the semicircular plate 1 and the semicircular plate 2. After the protective ring 1 and the protective ring 2 are fixed, they can play a certain sealing role on the bolts and nuts, avoiding the bolts and nuts from being exposed to the outside for a long time and rusting, preventing the connection between the pipe body 1 and the pipe body 2 from being damaged and leaking, and improving the corrosion resistance of the flange.

[0012] 2. The corrosion-resistant flange of the chemical pipeline is provided with a slide groove and a slider. When a thrust is applied to the protective ring 1, the slider in the protective ring 1 will slide in the slide groove, so that the slide groove and the slider play a certain auxiliary role in the movement of the protective ring 1, thereby avoiding the misalignment of the protective ring 1 when it moves on the surface of the pipe body 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the second explosion of the protection ring of the utility model;

[0015] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of a mounting plate of the utility model;

[0016] Figure 4 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0017] In the figure: 1. Tube body 1; 2. Tube body 2; 3. Protective ring 1; 4. Protective ring 2; 5. Mounting plate 1; 6. Mounting plate 2; 7. Flange 1; 8. Flange 2; 9. Bolts; 10. Nuts; 11. Sealing rubber ring; 12. Rotating rod; 13. Elastic telescopic rod; 14. Fixed plate; 15. Semicircular plate 1; 16. Arc groove; 17. Bevel; 18. Semicircular plate 2; 19. Slide groove; 20. Slider. DETAILED DESCRIPTION

[0018] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0019] like Figure 1-4 As shown, the utility model provides a technical solution: a chemical pipeline corrosion-resistant flange, including a pipe body 1 and a pipe body 2, a protective ring 3 is arranged outside the pipe body 1, a protective ring 2 is arranged outside the pipe body 2, two mounting plates 5 are connected outside the protective ring 3, two mounting plates 6 are connected outside the protective ring 24, one end of the pipe body 1 is connected to a flange 7, and one end of the pipe body 2 is connected to a flange 2 8;

[0020] A bolt 9 is provided in the flange 2 8, and the bolt 9 is clamped in the flange 1 7. The bolt 9 is externally threadedly connected with a nut 10, and the nut 10 overlaps the flange 1 7. By providing the bolt 9 and the nut 10, when the flange 1 7 and the flange 2 8 are fitted, the flange 1 7 and the flange 2 8 are fixed by the bolt 9 and the nut 10, thereby improving the sealing effect of the flange 1 7 and the flange 2 8 after being fixed, and avoiding leakage during the transportation of chemical liquids;

[0021] The mounting plate 15 is rotatably connected with a rotating rod 12, and the rotating rod 12 is externally connected with an elastic telescopic rod 13, one end of the elastic telescopic rod 13 is connected with a fixed plate 14, and one side of the fixed plate 14 is connected with a semicircular plate 15, an arc groove 16 is provided in the mounting plate 15, a bevel 17 is provided in the mounting plate 15, and a semicircle plate 2 18 is rotatably connected in the mounting plate 2 6. By setting the elastic telescopic rod 13, when the semicircular plate 15 is subjected to thrust, the fixed plate 14 will be driven to rotate, and the fixed plate 14 will pull the elastic telescopic rod 13 to move, and the built-in elastic force of the elastic telescopic rod 13 will change when it moves, so that the elastic telescopic rod 13 plays a certain supporting role in the rotation of the semicircular plate 15, and when the semicircular plate 15 loses resistance, it will be reset by the elastic force in the elastic telescopic rod 13;

[0022] The semicircular plate 15 is rotatably connected in the mounting plate 15, the fixed plate 14 is slidably connected in the arc groove 16, the mounting plate 15 is clamped with the mounting plate 2 6, and a sliding groove 19 is provided in the tube body 1. By providing the arc groove 16, when the semicircular plate 15 rotates, it will drive the fixed plate 14 to move, and the fixed plate 14 will slide in the arc groove 16, so that the arc groove 16 plays a certain guiding role in the rotation of the fixed plate 14, avoiding the fixed plate 14 from getting stuck when moving;

[0023] A slider 20 is connected inside the protective ring 13, and the slider 20 is slidably connected in the slide groove 19. A sealing rubber ring 11 is connected to one side of the protective ring 24, and the protective ring 24 is clamped with the protective ring 13. By setting the sealing rubber ring 11, when the protective ring 24 and the protective ring 13 are clamped, the sealing rubber ring 11 on the side of the protective ring 24 will be clamped in the protective ring 13, so that the sealing rubber ring 11 has a certain sealing effect on the fixation of the protective ring 13 and the protective ring 24, reducing the gap after the protective ring 13 and the protective ring 24 are fixed, and preventing moisture or dust in the air from penetrating into the interior through the connection between the protective ring 13 and the protective ring 24.

[0024] The working principle of the utility model is:

[0025] When the tube body 1 and the tube body 2 are connected, the flange 1 7 and the flange 2 8 at both ends of the tube body 1 and the tube body 2 will fit each other, and then the flange 1 7 and the flange 2 8 will be fixed to each other by bolts 9 and nuts 10. When the flange 1 7 and the flange 2 8 are fixed, a thrust is applied to the protective ring 1 3 and the protective ring 2 4, and the slider 20 in the protective ring 1 3 slides in the slide groove 19. When the protective ring 1 3 and the protective ring 2 4 contact each other during relative movement, the mounting plate 1 5 and the mounting plate 2 6 are clamped together. Since the structures in the mounting plate 1 5 and the mounting plate 2 6 are the same, when the bevel 17 contacts the half-circle plate 2 18, the half-circle plate 2 18 will rotate accordingly, and the semi-circular plate 15 will pull the elastic telescopic rod 13 when rotating, and the elastic telescopic rod 13 will rotate around the rotating rod 12 as the center. When the semicircular plate 15 moves, the fixed plate 14 will slide in the arc groove 16 with the semicircular plate 15. When the mounting plate 15 and the mounting plate 2 6 fit each other, the semicircular plate 15 and the semicircular plate 2 18 will contact each other, and the semicircular plate 15 will be restored by the elastic force in the elastic telescopic rod 13, and the semicircular plate 2 18 will also be reset accordingly, so that the semicircular plate 15 and the semicircular plate 2 18 can be both clamped in the mounting plate 15 and the mounting plate 2 6, so that the protective ring 13 and the protective ring 24 can be clamped, and the sealing rubber ring 11 will be clamped in the protective ring 13. When the protective ring 13 and the protective ring 24 need to be disassembled, the fixed plate 14 can be pushed. When the semicircular plate 15 and the semicircular plate 2 18 are disengaged from the built-in clamping grooves of the mounting plate 15 and the mounting plate 2 6, the mounting plate 15 and the mounting plate 2 6 will be disengaged.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A chemical pipeline corrosion-resistant flange, comprising a pipe body 1 (1) and a pipe body 2 (2), characterized in that: The first tube body (1) is provided with a protective ring (3) outside, the second tube body (2) is provided with a protective ring (4) outside, the first protective ring (3) is connected to two mounting plates (5) outside, the second protective ring (4) is connected to two mounting plates (6) outside, one end of the first tube body (1) is connected to a flange (7), one end of the second tube body (2) is connected to a flange (8), the first mounting plate (5) is rotatably connected to a rotating rod (12), the rotating rod (12) is connected to an elastic telescopic rod (13), one end of the elastic telescopic rod (13) is connected to a fixing plate (14), one side of the fixing plate (14) is connected to a semicircular plate (15), an arc groove (16) is provided in the first mounting plate (5), a bevel (17) is provided in the first mounting plate (5), and a semicircular plate (18) is rotatably connected to the second mounting plate (6).

2. A chemical pipeline corrosion-resistant flange according to claim 1, characterized in that: The second flange (8) is provided with bolts (9), and the bolts (9) are clamped in the first flange (7).

3. A chemical pipeline corrosion-resistant flange according to claim 2, characterized in that: The bolt (9) is externally threadedly connected with a nut (10), and the nut (10) is overlapped with flange 1 (7).

4. The corrosion-resistant flange for chemical pipeline according to claim 1, characterized in that: The semicircular plate 1 (15) is rotatably connected in the mounting plate 1 (5), the fixed plate (14) is slidably connected in the arc groove (16), and the mounting plate 1 (5) is clamped with the mounting plate 2 (6).

5. The corrosion-resistant flange for chemical pipeline according to claim 1, characterized in that: A slide groove (19) is provided in the tube body (1), a slider (20) is connected in the protection ring (3), and the slider (20) is slidably connected in the slide groove (19).

6. The corrosion-resistant flange for chemical pipeline according to claim 1, characterized in that: A sealing rubber ring (11) is connected to one side of the second protective ring (4), and the second protective ring (4) is snap-connected with the first protective ring (3).

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