Flange for gas pipeline connection

Abstract

The utility model belongs to the field of pipeline engineering, and particularly relates to a flange for gas pipeline connection, which comprises a flange body, and the middle of the flange body is fixedly connected with a first fixing shell; a second fixing shell is fixedly connected to the middle of the flange body. The second fixing shell is located in the first fixing shell. Screw holes are symmetrically formed in the middle of the second fixing shell. A screw rod is arranged in the screw hole; the end part of the screw rod is fixedly connected with an extrusion block; the side wall of the second fixing shell is slidably connected with a pair of sliding assemblies. The end part of the sliding assembly is fixedly connected with a limiting strip; a limiting hole is formed in the end part of the flange body; the screw rods are arranged in the screw holes, the extrusion blocks are driven to move when the screw rods are rotated, the extrusion blocks make contact with the limiting strips when moving, the flange body is supported when the limiting strips move to the designated position, the flange body can be pre-fixed when the flange body is installed, and the convenience of installing the flange body is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering, specifically a flange for connecting gas pipelines. Background Technology

[0002] A flange, also known as a flange plate or flange, is a component used for mechanical connection. It is mainly used for connecting equipment such as pipes, valves, pumps, and containers. As a part that connects shafts or equipment inlets and outlets, it plays an important role and has a wide range of applications.

[0003] Flanges are primarily based on sealing principles and fastening methods. These two key elements enable a tight connection between pipes and equipment, ensuring the safe transmission of fluids or gases. This connection method offers advantages such as easy disassembly, high strength, and excellent sealing performance.

[0004] Existing flanges are generally fixed to the workpiece with bolts. During the connection operation, the bolt holes need to be aligned and the flange needs to be supported by hand before installation. In use and observation, it has been found that this connection method is relatively troublesome because it requires support during installation.

[0005] Therefore, a flange for gas pipeline connection is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A flange for gas pipeline connection, comprising a flange body, a first fixing shell fixedly connected to the middle of the flange body; a second fixing shell fixedly connected to the middle of the flange body; the second fixing shell located inside the first fixing shell; symmetrically arranged screw holes in the middle of the second fixing shell; a screw rod disposed inside the screw hole; a pressing block fixedly connected to the end of the screw rod; a pair of sliding components slidably connected to the side wall of the second fixing shell; a limit strip fixedly connected to the end of the sliding component; a limit hole opened at the end of the flange body; by providing a screw rod in the screw hole, when the screw rod is rotated, it drives the pressing block to move and contact the limit strip. When the limit strip moves to a designated position, it supports the flange body, enabling pre-fixation of the flange body during installation, improving the convenience of flange body installation.

[0008] Preferably, a first telescopic rod is fixedly connected to the side wall of the second fixed shell; a baffle is fixedly connected to the end of the first telescopic rod; by fixing a baffle to the end of the first telescopic rod, the movement stroke of the extrusion block can be limited when the extrusion block moves forward to a designated position, reducing the situation where the extrusion block moves forward too much when the screw rotates forward.

[0009] Preferably, the sliding assembly includes a first fixing block; the first fixing block and the second fixing shell are fixedly connected; a first sliding groove is formed on the side wall of the second fixing shell; a second telescopic rod is fixedly connected to the first fixing block; a connecting block is fixedly connected to the end of the second telescopic rod; the connecting block and the limiting strip are fixedly connected; the connecting block and the first sliding groove are slidably connected. By fixing the second telescopic rod to the first fixing block and fixing the connecting block to the end of the second telescopic rod, the limiting strip can be fixed during its movement, reducing the wobbling of the limiting strip during its movement.

[0010] Preferably, the second fixed shell is symmetrically provided with a second sliding groove; a slider is slidably connected in the second sliding groove; the slider and the limiting strip are fixedly connected. By slidably connecting the slider in the second sliding groove, the movement trajectory of the limiting strip can be guided during the movement of the limiting strip, reducing the situation where the limiting strip cannot pass through the limiting hole due to deviation during the movement of the limiting strip.

[0011] Preferably, a second fixing block is fixedly connected to the end of the second slide groove; a spring is fixedly connected to the second fixing block; the spring and the slider are fixedly connected. By fixing the spring to the second fixing block, the limiting strip can be pulled back to its original position after use, reducing the situation where the limiting strip cannot return to its original position after use.

[0012] Preferably, a plurality of ball bearings are rotatably connected to the extrusion block; the ball bearings are located between the limiting strip and the extrusion block. By rotatably connecting the ball bearings to the surface of the extrusion block, the limiting strip can be lifted more smoothly when the extrusion block lifts it, reducing the possibility of jamming when the extrusion block and the limiting strip come into contact.

[0013] Preferably, a third telescopic rod is fixedly connected between the pair of limiting strips; one end of the third telescopic rod is fixedly connected to the limiting strip; when the limiting strips are not in use, they support the pair of limiting strips, reducing the situation where the pair of limiting strips are in complete contact when not in use, which would prevent the pressing block from lifting the limiting strips.

[0014] Preferably, the screw end has a threaded opening; the threaded opening has a hexagonal structure, and when it is necessary to rotate the screw, a wrench is inserted into the threaded opening, and then the screw can be rotated by rotating the wrench. By having a threaded opening at the end of the screw, it is more convenient and less strenuous to rotate the screw.

[0015] The advantages of this utility model are:

[0016] 1. The flange for connecting gas pipelines described in this utility model has a screw installed in the screw hole. When the screw is rotated, it drives the extrusion block to move and contact the limiting strip. When the limiting strip moves to the designated position, it supports the flange body. This allows for pre-fixing of the flange body during installation, improving the convenience of flange body installation.

[0017] 2. The flange for connecting gas pipelines described in this utility model, by fixing a baffle to the end of the first telescopic rod, can limit the movement stroke of the extrusion block when it moves forward to a designated position, thereby reducing the situation where the extrusion block moves forward too much when the screw rotates forward. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main body of this utility model;

[0020] Figure 2 This is a schematic diagram of the limiting strip in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the baffle in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the second slide groove in this utility model;

[0023] Figure 5 This is a schematic diagram of the ball bearing structure in this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the third telescopic rod in this utility model;

[0025] Figure 7 This is a schematic diagram of the screw thread structure in this utility model.

[0026] Legend: 1. Flange body; 11. First fixed shell; 12. Second fixed shell; 13. Screw hole; 14. Screw; 15. Pressing block; 16. Sliding assembly; 17. Limiting strip; 18. Limiting hole; 2. First telescopic rod; 21. Baffle; 3. First fixed block; 31. First slide groove; 32. Second telescopic rod; 33. Connecting block; 4. Second slide groove; 41. Slider; 5. Second fixed block; 51. Spring; 6. Ball bearing; 7. Third telescopic rod; 8. Threaded hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] Specific implementation examples are given below.

[0029] like Figures 1 to 7 As shown in the embodiment of this utility model, a flange for connecting a gas pipeline includes a flange body 1. A first fixing shell 11 is fixedly connected to the middle of the flange body 1. A second fixing shell 12 is fixedly connected to the middle of the flange body 1. The second fixing shell 12 is located inside the first fixing shell 11. Screw holes 13 are symmetrically opened in the middle of the second fixing shell 12. A screw 14 is provided inside the screw hole 13. A pressing block 15 is fixedly connected to the end of the screw 14. A pair of sliding components 16 are slidably connected to the side wall of the second fixing shell 12. A limit strip 17 is fixedly connected to the end of the sliding component 16. A limit hole 18 is opened at the end of the flange body 1. During operation, the flange body 1 is placed at the gas pipeline to be connected, and then the screw 14 is rotated. When the screw 14 rotates, it drives the pressing block 15 forward. When the extrusion block 15 moves to the designated position, it contacts the limiting strip 17. When the extrusion block 15 and the limiting strip 17 move, the limiting strip 17 slides within the sliding assembly 16. When the limiting strip 17 moves to the designated position, it passes through the limiting hole 18 opened at the end of the flange body 1. When the limiting strip 17 passes through the limiting hole 18, it contacts and locks the edge of the gas pipeline to be connected. At this time, the limiting strip 17 supports the flange body 1. A screw 14 is provided in the screw hole 13. When the screw 14 is rotated, it drives the extrusion block 15 to move. When the extrusion block 15 moves, it contacts the limiting strip 17. When the limiting strip 17 moves to the designated position, it supports the flange body 1. This allows the flange body 1 to be pre-fixed during installation, improving the convenience of flange body 1 installation.

[0030] like Figures 2 to 3As shown, a first telescopic rod 2 is fixedly connected to the side wall of the second fixed shell 12; a baffle 21 is fixedly connected to the end of the first telescopic rod 2; when the screw 14 moves forward, it drives the extrusion block 15 to move, and when the extrusion block 15 moves forward, it pushes the limiting strip 17. When the extrusion block 15 moves to the designated position, the extrusion block 15 contacts the baffle 21. By fixing the baffle 21 to the end of the first telescopic rod 2, the movement stroke of the extrusion block 15 can be limited when the extrusion block 15 moves forward to the designated position, reducing the situation where the extrusion block 15 moves forward too much when the screw 14 rotates forward.

[0031] like Figure 4 As shown, the sliding assembly 16 includes a first fixing block 3; the first fixing block 3 and the second fixing shell 12 are fixedly connected; the side wall of the second fixing shell 12 is provided with a first sliding groove 31; a second telescopic rod 32 is fixedly connected to the first fixing block 3; a connecting block 33 is fixedly connected to the end of the second telescopic rod 32; the connecting block 33 and the limiting strip 17 are fixedly connected; the connecting block 33 and the first sliding groove 31 are slidably connected. When the limiting strip 17 moves, it drives the connecting block 33 to move. When the connecting block 33 slides in the first sliding groove 31, it drives the second telescopic rod 32 to retract. By fixing the second telescopic rod 32 to the first fixing block 3 and fixing the connecting block 33 to the end of the second telescopic rod 32, the limiting strip 17 can be fixed during its movement, reducing the shaking of the limiting strip 17 during its movement.

[0032] like Figure 4 As shown, the second fixed shell 12 is symmetrically provided with a second sliding groove 4; a slider 41 is slidably connected in the second sliding groove 4; the slider 41 and the limiting strip 17 are fixedly connected. When the limiting strip 17 moves, it drives the slider 41 to slide in the second sliding groove 4. By slidably connecting the slider 41 in the second sliding groove 4, the movement trajectory of the limiting strip 17 can be guided during the movement of the limiting strip 17, reducing the situation where the limiting strip 17 cannot pass through the limiting hole 18 due to deviation during the movement of the limiting strip 17.

[0033] like Figure 4 As shown, a second fixing block 5 is fixedly connected to the end of the second slide 4; a spring 51 is fixedly connected to the second fixing block 5; the spring 51 and the slider 41 are fixedly connected. When the extrusion block 15 moves to the designated position, the limiting strip 17 passes through the limiting hole 18 to support the flange body 1. When the extrusion block 15 does not contact the limiting strip 17, the limiting strip 17 moves downward. At this time, it returns to its original position under the action of the spring 51. By fixing the spring 51 to the second fixing block 5, the limiting strip 17 can be pulled back to its original position after use, reducing the situation where the limiting strip 17 cannot return to its original position after use.

[0034] like Figure 5As shown, a plurality of balls 6 are rotatably connected to the extrusion block 15; the balls 6 are located between the limiting strip 17 and the extrusion block 15. When the extrusion block 15 moves to the designated position, the balls 6 and the limiting strip 17 come into contact, and the limiting strip 17 moves on the surface of the balls 6. By rotatably connecting the balls 6 to the surface of the extrusion block 15, the limiting strip 17 can be lifted more smoothly when the extrusion block 15 lifts it, reducing the jamming situation when the extrusion block 15 and the limiting strip 17 come into contact.

[0035] like Figure 6 As shown, a third telescopic rod 7 is fixedly connected between a pair of limiting strips 17; the third telescopic rod 7 is located inside the first fixed shell 11; when the limiting strips 17 are not in use, it supports the pair of limiting strips 17, reducing the situation where the pair of limiting strips 17 are in complete contact when not in use, causing the squeezing block 15 to be unable to lift the limiting strips 17.

[0036] like Figure 7 As shown, the screw 14 has a threaded opening 8 at its end; the threaded opening 8 is hexagonal in structure. When it is necessary to rotate the screw 14, a wrench is inserted into the threaded opening 8, and then the wrench is rotated to rotate the screw 14. The threaded opening 8 at the end of the screw 14 makes it more convenient and less strenuous to rotate the screw 14.

[0037] Working principle: Place the flange body 1 at the gas pipeline to be connected, then rotate the screw 14. When the screw 14 rotates, it drives the pressing block 15 forward. When the pressing block 15 moves to the designated position, it contacts the limiting strip 17. As the pressing block 15 and the limiting strip 17 move, the limiting strip 17 slides within the sliding assembly 16. When the limiting strip 17 moves to the designated position, it passes through the limiting hole 18 at the end of the flange body 1. When the limiting strip 17 passes through the limiting hole 18, the limiting strip 17 contacts the gas pipeline to be connected. The gas pipeline edge contacts and clamps, at which point the limiting strip 17 supports the flange body 1. When the screw 14 moves forward, it drives the pressing block 15 to move. When the pressing block 15 moves forward, it pushes the limiting strip 17. When the pressing block 15 moves to the designated position, it contacts the baffle 21. When the limiting strip 17 moves, it drives the connecting block 33 to move. When the connecting block 33 slides in the first slide groove 31, it drives the second telescopic rod 32 to retract. When the limiting strip 17 moves, it drives the slider 41 to slide in the second slide groove 4. The movement of the limiting strip 17 is guided by a slider 41 slidably connected within the second slide groove 4, reducing the possibility of the limiting strip 17 failing to pass through the limiting hole 18 due to deviation during its movement. When the pressing block 15 moves to the designated position, the limiting strip 17 passes through the limiting hole 18 to support the flange body 1. When the pressing block 15 is not in contact with the limiting strip 17, the limiting strip 17 moves downwards and returns to its original position under the action of the spring 51. When the ball 6 moves to the designated position, the ball 6 and the limiting strip 17 come into contact. The limiting strip 17 moves on the surface of the ball 6. When the limiting strip 17 is not in use, it supports a pair of limiting strips 17, reducing the situation where a pair of limiting strips 17 are in complete contact when not in use, which would prevent the pressing block 15 from lifting the limiting strips 17. When it is necessary to rotate the screw 14, insert the wrench into the screw hole 8, and then rotate the wrench to rotate the screw 14. By opening the screw hole 8 at the end of the screw 14, it is more convenient and less labor-intensive to rotate the screw 14.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A flange for connecting a gas pipeline, comprising a flange body (1); characterized in that: A first fixed shell (11) is fixedly connected to the middle of the flange body (1); a second fixed shell (12) is fixedly connected to the middle of the flange body (1); the second fixed shell (12) is located inside the first fixed shell (11); screw holes (13) are symmetrically opened in the middle of the second fixed shell (12); a screw (14) is provided inside the screw hole (13); an extrusion block (15) is fixedly connected to the end of the screw (14); a pair of sliding components (16) are slidably connected to the side wall of the second fixed shell (12); a limit strip (17) is fixedly connected to the end of the sliding component (16); a limit hole (18) is opened at the end of the flange body (1).

2. A flange for connecting gas pipelines according to claim 1, characterized in that: The second fixed shell (12) has a first telescopic rod (2) fixedly connected to its side wall; the end of the first telescopic rod (2) has a baffle (21) fixedly connected to it.

3. A flange for connecting gas pipelines according to claim 2, characterized in that: The sliding assembly (16) includes a first fixing block (3); the first fixing block (3) and the second fixing shell (12) are fixedly connected; the second fixing shell (12) has a first sliding groove (31) on its side wall; a second telescopic rod (32) is fixedly connected to the first fixing block (3); a connecting block (33) is fixedly connected to the end of the second telescopic rod (32); the connecting block (33) and the limiting strip (17) are fixedly connected; the connecting block (33) and the first sliding groove (31) are slidably connected.

4. A flange for connecting gas pipelines according to claim 3, characterized in that: The second fixed shell (12) is symmetrically provided with a second sliding groove (4); a slider (41) is slidably connected in the second sliding groove (4); the slider (41) and the limiting strip (17) are fixedly connected.

5. A flange for connecting gas pipelines according to claim 4, characterized in that: A second fixing block (5) is fixedly connected to the end of the second slide (4); a spring (51) is fixedly connected to the second fixing block (5); the spring (51) and the slider (41) are fixedly connected.

6. A flange for connecting gas pipelines according to claim 5, characterized in that: Multiple balls (6) are rotatably connected to the extrusion block (15); the balls (6) are located between the limiting strip (17) and the extrusion block (15).

7. A flange for connecting gas pipelines according to claim 6, characterized in that: A third telescopic rod (7) is fixedly connected between a pair of the limiting strips (17); the third telescopic rod (7) is located inside the first fixed shell (11).

8. A flange for connecting gas pipelines according to claim 7, characterized in that: The screw (14) has a screw opening (8) at its end; the screw opening (8) is a hexagonal structure.

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