Flange with anti-loosening structure

Abstract

The utility model discloses a flange with an anti-loose structure, which comprises a first flange and a second flange, four mounting holes which are annularly distributed at equal intervals are formed in each of the first flange and the second flange, the positions of the mounting holes correspond to each other, the flange further comprises an L-shaped block which is welded on the outer wall of the second flange, and the L-shaped block is arranged on the outer wall of the second flange. And the four L-shaped blocks are annularly distributed and welded at equal intervals, transmission cavities are formed in the L-shaped blocks correspondingly, threaded rods are rotationally arranged in the transmission cavities correspondingly, moving blocks are connected to the outer portions of the threaded rods in a threaded mode correspondingly, and two limiting blocks are welded to one end face of each moving block. According to the flange with the anti-loosening structure, stable connection between the first flange and the second flange can be ensured, firmness after connection is improved, the sealing performance after butt joint and fixation of the first flange and the second flange can be improved through extrusion and attachment of the annular expansion air bag and the annular groove, connection is firmer and more reliable, and the service life of the flange is prolonged. The sealing structure is suitable for occasions with high requirements for sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a flange with an anti-loosening structure. Background Art

[0002] Flange, also known as flange flange or flange, is a part that connects shafts to each other. It is mainly used for connection between pipe ends. It is also commonly used for equipment inlets and outlets to achieve connection between two devices. For example, reducer flange is used for connection between motor and reducer, as well as connection between reducer and other equipment. Flange connection or flange joint is a detachable connection of a combined sealing structure composed of flange, gasket and bolts. There are holes on the flange, and the two flanges are tightly connected by bolts, while the flanges are sealed with gaskets. There are many types of flanges, including threaded flanges, welding flanges and clamping flanges.

[0003] The existing Chinese patent with announcement number CN219345303U discloses a flange that is easy to install, including two butted flange bodies, one side of one flange body is provided with a connecting plate, the inner wall of the connecting plate is rotatably connected with a plurality of bolts, the inner walls of adjacent bolts are meshed with each other, and one end of the bolt passes through the inner wall of the two flange bodies and is threadedly connected to the butt plate.

[0004] Although the above solution can facilitate installation by engaging several bolts with each other, the flange is still fixed by nuts. During the operation of the pipeline system or equipment, due to changes in mechanical vibration, the connection between the bolts and nuts may gradually loosen, thereby affecting the firmness. Therefore, it does not meet the existing needs. In this regard, we propose a flange with an anti-loosening structure. Utility Model Content

[0005] The utility model aims to provide a flange with an anti-loosening structure to solve the problem in the background art that the flange is easily affected by mechanical vibration during use, which may cause the nut to loosen and separate the two flanges, affecting the connection.

[0006] To achieve the above object, the utility model provides the following technical solution: a flange with an anti-loosening structure, comprising a first flange and a second flange, wherein the first flange and the second flange are each provided with four annular mounting holes equidistantly distributed therein, and the mounting holes are located in corresponding positions.

[0007] It also includes an L-shaped block, which is welded to the outer wall of the second flange, and four L-shaped blocks are welded in an annular and equidistant distribution, each of the L-shaped blocks has a transmission cavity opened inside, a threaded rod is rotatably arranged inside the transmission cavity, and a moving block is threadedly connected to the outside of the threaded rod, and two limit blocks are welded to one end surface of the moving block, and the limit blocks penetrate and extend to the outside of the transmission cavity, and the limit blocks are slidably matched with the transmission cavity;

[0008] It also includes an annular expansion airbag which is adhesively fixed to one side of the second flange.

[0009] Preferably, a storage cavity is opened on the outside of the transmission cavity, a rotating shaft is provided at one end of the threaded rod, one end of the rotating shaft passes through and extends into the interior of the storage cavity, and the rotating shaft rotates with the storage cavity, and a screw slot block is installed at one end of the rotating shaft located inside the storage cavity.

[0010] Preferably, guide rods are provided on both sides of the threaded rod, and the guide rods are welded and fixed to the transmission cavity, and the guide rods pass through the moving block, and the guide rods are slidably matched with the moving block.

[0011] Preferably, four annular equidistantly distributed docking cavities are formed inside the second flange, and four annular equidistantly distributed docking blocks are welded to one side of the first flange, and the docking blocks are all slidably matched with the docking cavities.

[0012] Preferably, two limiting grooves are provided on one side inside the docking block, and both limiting grooves are adapted to the limiting block.

[0013] Preferably, an inflation nozzle is installed on the upper side of one side of the second flange, and the inflation nozzles are connected to the annular expansion airbag.

[0014] Preferably, an annular groove is formed on one side of the first flange, and the annular groove is adapted to fit the annular expansion airbag.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model provides four L-shaped blocks equidistantly distributed in a ring shape on the outer wall of the second flange. When the first flange and the second flange are butt-jointed, the butt-jointed blocks will pass through the butt-jointed cavity. At this time, rotating the threaded rod can make the moving block drive the limit block to move, so that the limit block passes through the limit groove started on the butt-jointed block, thereby limiting the butt-jointed block, and then limiting the first flange through the butt-jointed block, thereby ensuring a stable connection between the first flange and the second flange, and increasing the firmness after connection.

[0017] 2. The utility model provides a storage chamber on the outside of the transmission chamber. When the user rotates the threaded rod, the screwdriver can be inserted into the screw slot provided on the screw slot block to rotate it, thereby completing the rotation of the threaded rod. When not in use, the opening of the storage chamber can protect the screw slot block, which can prevent most foreign objects from accidentally touching the screw slot block, thereby ensuring the stability of the threaded rod after rotation.

[0018] 3. The utility model has an annular expansion airbag bonded and fixed on one side of the second flange. When the first flange and the second flange are butt-jointed and fixed, the user inflates the annular expansion airbag through the inflation nozzle. The annular expansion airbag will expand after inflation and will be stuck in the annular groove. The annular expansion airbag and the annular groove are squeezed and fitted to improve the sealing performance of the first flange and the second flange after butt-jointed and fixed, and the connection is made more firm and reliable. The utility model is suitable for occasions with high requirements for sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a side view schematic diagram of the internal structure of the transmission chamber of the utility model;

[0021] Figure 3 It is a side view schematic diagram of the internal structure of the second flange of the utility model;

[0022] Figure 4 For the utility model Figure 1 A partial enlarged view of the middle A area;

[0023] Figure 5 For the utility model Figure 2 A partial enlarged view of area B in the middle.

[0024] In the figure: 1. first flange; 2. second flange; 3. docking block; 4. docking cavity; 5. limiting groove; 6. L-shaped block; 7. transmission cavity; 8. threaded rod; 9. guide rod; 10. moving block; 11. limiting block; 12. rotating shaft; 13. screw slot block; 14. storage cavity; 15. inflation nozzle; 16. annular expansion airbag; 17. annular groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 The utility model provides a technical solution: a flange with an anti-loosening structure, comprising a first flange 1 and a second flange 2, wherein the first flange 1 and the second flange 2 are both provided with four annular mounting holes equidistantly distributed therein, and the mounting holes are located in corresponding positions;

[0027] It also includes an L-shaped block 6, which is welded to the outer wall of the second flange 2, and four L-shaped blocks 6 are welded in an annular and equidistant distribution, each L-shaped block 6 has a transmission cavity 7 opened inside, a threaded rod 8 is rotatably arranged inside the transmission cavity 7, and a moving block 10 is threadedly connected to the outside of the threaded rod 8, and two limit blocks 11 are welded to one end surface of the moving block 10, and the limit blocks 11 penetrate and extend to the outside of the transmission cavity 7, and the limit blocks 11 are slidably matched with the transmission cavity 7;

[0028] It also includes an annular expansion airbag 16 which is adhesively fixed to one side of the second flange 2 .

[0029] When in use, the first flange 1 is docked with the second flange 2 so that the docking block 3 passes through the docking cavity 4. At this time, the screw slot block 13 is rotated by a screwdriver, so that the threaded rod 8 can drive the moving block 10 to move, and the moving block 10 will drive the limit block 11 to fit into the limit slot 5, so that the docking block 3 can be limited and fixed, and then the first flange 1 is limited by the docking block 3, thereby ensuring a stable connection between the first flange 1 and the second flange 2, thereby increasing the firmness after the connection.

[0030] See also Figure 4 and Figure 5 , a receiving chamber 14 is provided on the outside of the transmission chamber 7, a rotating shaft 12 is provided at one end of the threaded rod 8, one end of the rotating shaft 12 penetrates and extends into the inside of the receiving chamber 14, and the rotating shaft 12 rotates with the receiving chamber 14, and a screw slot block 13 is installed at one end of the rotating shaft 12 located inside the receiving chamber 14, and the screw slot block 13 can be stored through the receiving chamber 14, which can avoid most foreign objects from accidentally touching the screw slot block 13, and ensure the stability of the threaded rod 8 after rotation;

[0031] See also Figure 5 , guide rods 9 are provided on both sides of the threaded rod 8, and the guide rods 9 are welded and fixed to the transmission cavity 7, the guide rods 9 pass through the moving block 10, and the guide rods 9 are slidably matched with the moving block 10, and the guide rods 9 can axially limit the moving block 10, so that the rotation of the moving block 10 is converted into horizontal linear movement, so that it can be stuck in the inner part of the limiting groove 5;

[0032] See also Figure 1 , Figure 3 and Figure 4 The second flange 2 has four equidistantly distributed annular docking cavities 4 formed inside, and one side of the first flange 1 is welded with four equidistantly distributed annular docking blocks 3, and the docking blocks 3 are all slidably matched with the docking cavities 4. After the docking blocks 3 pass through the docking cavities 4, the rotation between the first flange 1 and the second flange 2 can be avoided;

[0033] See also Figure 4 and Figure 5, two limiting grooves 5 are provided on one side of the interior of the docking block 3, and the limiting grooves 5 are adapted to the limiting blocks 11, and the limiting blocks 11 can be fixed in position after being inserted into the limiting grooves 5;

[0034] See also Figure 2 and Figure 4 An inflation nozzle 15 is installed on the upper side of one side of the second flange 2, and the inflation nozzles 15 are connected to the annular expansion airbag 16, and the inflation nozzle 15 can inflate the annular expansion airbag 16;

[0035] See also Figure 1 An annular groove 17 is provided on one side of the first flange 1, and the annular groove 17 is adapted to the annular expansion airbag 16. After the annular expansion airbag 16 is expanded, it will squeeze and fit the annular groove 17, thereby improving the sealing performance of the first flange 1 and the second flange 2 after docking and fixing.

[0036] Working principle: When in use, dock the first flange 1 with the second flange 2, and make the docking block 3 pass through the docking cavity 4, which can avoid the rotation of the first flange 1 and the second flange 2 after being connected. Insert the screwdriver into the screw slot opened by the screw slot block 13, and the screw slot block 13 can be rotated. The screw slot block 13 will drive the rotating shaft 12 to rotate, and the rotating shaft 12 will drive the threaded rod 8 to rotate synchronously. The threaded rod 8 will drive the moving block 10 to rotate synchronously. Since the moving block 10 is slidably matched with the two guide rods 9, the moving block 10 will be axially limited, and the rotation of the moving block 10 will be converted into linear movement. When the moving block 10 moves, it will drive the two limit blocks 11 to move synchronously, so that the limit block 11 can be stuck in the limit slot 5 opened in the docking block 3, so that the docking can be done through the limit block 11 The block 3 is limited to prevent the docking block 3 from escaping from the inside of the limiting groove 5, thereby ensuring a stable connection between the first flange 1 and the second flange 2, increasing the firmness after the connection, and when the rotation of the screw slot block 13 is completed, the screw slot block 13 can be stored through the storage cavity 14, which can prevent most foreign objects from accidentally touching the screw slot block 13, and ensure the stability of the threaded rod 8 after rotation. After the first flange 1 and the second flange 2 are docked and fixed, the inflation nozzle 15 can be inflated by an air pump, so that the annular expansion airbag 16 can be inflated. After the annular expansion airbag 16 is inflated, it will squeeze and fit the annular groove 17, thereby improving the sealing of the first flange 1 and the second flange 2 after docking and fixing, and making the connection more firm and reliable, which is suitable for occasions with high requirements for sealing.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A flange with an anti-loosening structure, comprising a first flange (1) and a second flange (2), wherein the first flange (1) and the second flange (2) are each provided with four mounting holes which are equidistantly distributed in an annular shape, and the positions of the mounting holes are corresponding, and characterized in that: It also includes an L-shaped block (6) which is welded to the outer wall of the second flange (2), and four L-shaped blocks (6) are welded in an annular shape and are equidistantly distributed. A transmission cavity (7) is provided inside each of the L-shaped blocks (6), a threaded rod (8) is rotatably arranged inside each of the transmission cavities (7), a moving block (10) is threadedly connected to the outside of each of the threaded rods (8), and two limit blocks (11) are welded to one end surface of each of the moving blocks (10), and each of the limit blocks (11) penetrates and extends to the outside of the transmission cavity (7), and each of the limit blocks (11) is slidably matched with the transmission cavity (7); It also includes an annular expansion airbag (16) which is adhesively fixed to one side of the second flange (2).

2. The flange with an anti-loosening structure according to claim 1, characterized in that: The outer side of the transmission cavity (7) is provided with a receiving cavity (14); one end of the threaded rod (8) is provided with a rotating shaft (12); one end of the rotating shaft (12) passes through and extends into the interior of the receiving cavity (14); the rotating shaft (12) is rotatably matched with the receiving cavity (14); and one end of the rotating shaft (12) located inside the receiving cavity (14) is installed with a screw slot block (13).

3. The flange with an anti-loosening structure according to claim 1, characterized in that: Guide rods (9) are provided on both sides of the threaded rod (8), and the guide rods (9) are welded and fixed to the transmission cavity (7). The guide rods (9) pass through the moving block (10), and the guide rods (9) are slidably matched with the moving block (10).

4. The flange with an anti-loosening structure according to claim 1, characterized in that: The second flange (2) is provided with four annularly equidistantly distributed docking cavities (4) inside, and one side of the first flange (1) is welded with four annularly equidistantly distributed docking blocks (3), and the docking blocks (3) are all slidably matched with the docking cavities (4).

5. The flange with an anti-loosening structure according to claim 4, characterized in that: Two limiting grooves (5) are provided on one side inside the docking block (3), and both limiting grooves (5) are adapted to the limiting block (11).

6. The flange with an anti-loosening structure according to claim 1, characterized in that: An inflation nozzle (15) is installed on the upper side of one side of the second flange (2), and the inflation nozzle (15) is connected to the annular expansion airbag (16).

7. The flange with an anti-loosening structure according to claim 1, characterized in that: An annular groove (17) is provided on one side of the first flange (1), and the annular groove (17) is adapted to fit the annular expansion airbag (16).

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