Flange joint with anti-falling structure

Abstract

The utility model relates to the technical field of flanges, and discloses a flange joint with an anti-drop structure, which comprises a first flange joint and a second flange joint, the first flange joint is slidably connected to the front side of the second flange joint, the periphery of the first flange joint is in threaded connection with a plurality of fixing bolts which are uniformly distributed, and the fixing bolts are in threaded connection with the periphery of the second flange joint. Protective shells are fixedly connected to the upper side and the lower side of the first flange connector correspondingly, connecting rods are slidably connected to the interiors of the two protective shells correspondingly, anti-disengaging blocks are fixedly connected to the ends, away from the two protective shells, of the two connecting rods correspondingly, and movable blocks are fixedly connected to the ends, close to the protective shells, of the connecting rods correspondingly; the left side and the right side of the movable block are fixedly connected with sliding blocks. According to the utility model, the anti-falling block is in contact with the rear side of the flange joint II, so that the flange joint I and the flange joint II can be propped against each other, the connection is more precise, and the baffle is arranged in the flange joint I, so that the effect of preventing reverse flow is achieved.

Description

Technical Field

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

[0002] The function of a flange joint is to connect pipelines, valves, pumps and other equipment, ensuring the sealing performance and stability of the connection, enabling the safe and effective transportation of fluids, and facilitating installation, disassembly, maintenance and repair. It is widely used in pipeline systems in industries such as petroleum, natural gas, chemical industry, electric power, water supply, etc.;

[0003] Bolt connection is the most common and widely used connection method in flange joints. It fastens two flange plates together through bolts and nuts, and places a sealing gasket between the flange plates to achieve a firm connection and seal between pipelines, valves, pumps and other equipment;

[0004] However, in actual use, after a traditional flange joint has been used for some time, the pipeline connection is prone to looseness, resulting in an insufficiently tight connection at the joint, causing medium leakage and pipeline loosening. In severe cases, it may even lead to pipeline detachment. Therefore, a flange joint with an anti - detachment structure is proposed to solve the above problems. Content of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides a flange joint with an anti - detachment structure, aiming to improve the problem of insufficient tightness at the joint of traditional flange joints in the prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A flange joint with an anti - detachment structure includes a first flange joint and a second flange joint. The first flange joint is slidably connected to the front side of the second flange joint. A plurality of uniformly distributed fixing bolts are threadedly connected to the outer periphery of the first flange joint. Protective shells are fixedly connected to both the upper and lower sides of the first flange joint. Connecting rods are slidably connected inside both protective shells. Anti - detachment blocks are fixedly connected to one ends of the two connecting rods away from the two protective shells. Movable blocks are fixedly connected to the ends of the connecting rods close to the protective shells. Sliders are fixedly connected to both the left and right sides of the movable blocks. Moving blocks are slidably connected to both the left and right sides of the movable blocks. Connecting blocks are fixedly connected to both the upper and lower sides of the two moving blocks. Springs are fixedly connected to the opposite sides of the two opposite connecting blocks. Slide rods are slidably connected inside the connecting blocks. A protection assembly is provided inside the first flange joint, and the protection assembly is used to prevent liquid backflow;

[0008] As a further description of the above technical solution:

[0009] The protection component includes a limit block, which is fixedly connected to the top of the first flange joint. A baffle is rotatably connected inside the first flange joint. A second rotating block is fixedly connected to the front side inside the first flange joint. A fixing rod is rotatably connected inside the second rotating block. A compression spring is fixedly connected inside the fixing rod. One end of the compression spring away from the second rotating block is fixedly connected to a sliding plate. One side of the sliding plate away from the compression spring is fixedly connected to a telescopic rod. The outer periphery of the telescopic rod is rotatably connected to a first rotating block;

[0010] As a further description of the above technical solution:

[0011] Rubber pads are fixedly connected to the front sides of the two anti - detachment blocks, and the two rubber pads are respectively slidably connected to the upper and lower ends at the rear side of the second flange joint;

[0012] As a further description of the above technical solution:

[0013] Buffer pads are fixedly connected to both the front and rear sides of the baffle, and the first rotating block is fixedly connected to the front side of one of the buffer pads;

[0014] As a further description of the above technical solution:

[0015] Chutes are formed on the opposite sides of the two moving blocks, and the two sliders are respectively slidably connected inside the two chutes;

[0016] As a further description of the above technical solution:

[0017] The left and right sides of the sliding rod are respectively fixedly connected to the left and right sides inside the protective shell, and the two springs are respectively sleeved on the left and right ends of the sliding rod;

[0018] As a further description of the above technical solution:

[0019] The rear end of the limit block is fixedly connected to the rear side of the other buffer pad;

[0020] As a further description of the above technical solution:

[0021] The sliding plate is slidably connected inside the fixing rod.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present utility model, by pulling the anti - detachment block, the connecting rod drives the movable block to move, so that the connecting block compresses the spring. Subsequently, the first flange joint and the second flange joint are brought into mutual contact. Then, the anti - detachment block can be released. By the reset of the spring, the movable block is controlled to move, and the anti - detachment block contacts the rear side of the second flange joint, so that the first flange joint and the second flange joint can be mutually abutted, and the connection is more precise. Then, they are further fixed by bolts to achieve the anti - detachment purpose.

[0024] 2. In the present utility model, by installing a baffle inside the first flange joint, the limiting block enables the baffle to rotate only in one direction, thus achieving the effect of preventing backflow. Through the mutual cooperation between the sliding plate and the compression spring, the retractable reset of the compression spring generates a thrust force to further control the reset ability of the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three - dimensional schematic diagram of the flange joint with an anti - detachment structure proposed by the present utility model;

[0026] Figure 2 is a structural schematic diagram of the movable block of the flange joint with an anti - detachment structure proposed by the present utility model;

[0027] Figure 3 is a structural schematic diagram of the slider of the flange joint with an anti - detachment structure proposed by the present utility model;

[0028] Figure 4 is a structural schematic diagram of the baffle of the flange joint with an anti - detachment structure proposed by the present utility model;

[0029] Figure 5 is a structural schematic diagram of the limiting block of the flange joint with an anti - detachment structure proposed by the present utility model;

[0030] Figure 6 is Figure 4 the enlarged view at A in

[0031] LEGEND DESCRIPTION:

[0032] 1. First flange joint; 2. Second flange joint; 3. Fixing bolt; 4. Protective shell; 5. Connecting rod; 6. Anti - detachment block; 7. Movable block; 8. Slider; 9. Chute; 10. Moving block; 11. Connecting block; 12. Slide bar; 13. Spring; 14. Baffle; 15. Buffer pad; 16. First rotating block; 17. Telescopic rod; 18. Sliding plate; 19. Compression spring; 20. Second rotating block; 21. Limiting block; 22. Rubber pad; 23. Fixed rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Referring to Figure 1 - Figure 3 , an embodiment provided by the present invention: a flange joint with an anti-loosening structure, including a first flange joint 1 and a second flange joint 2. The first flange joint 1 is slidably connected to the front side of the second flange joint 2. Both the first flange joint 1 and the second flange joint 2 are made of carbon steel, specifically Q235 carbon steel. A plurality of uniformly distributed fixing bolts 3 are threadedly connected to the outer periphery of the first flange joint 1. The fixing bolts 3 are used to connect the first flange joint 1 and the second flange joint 2. Protective shells 4 are fixedly connected to both the upper and lower sides of the first flange joint 1. Connecting rods 5 are slidably connected to the interiors of the two protective shells 4. Anti-loosening blocks 6 are fixedly connected to the ends of the two connecting rods 5 away from the two protective shells 4. The connecting rods 5 are used to connect the anti-loosening blocks 6. Rubber pads 22 are fixedly connected to the front sides of the two anti-loosening blocks 6. The two rubber pads 22 are respectively slidably connected to the upper and lower ends of the rear side of the second flange joint 2. The anti-loosening blocks 6 are used to make the first flange joint 1 and the second flange joint 2 abut against each other, and the rubber pads 22 are used to provide an increased frictional force between the anti-loosening blocks 6 and the second flange joint 2. A movable block 7 is fixedly connected to the end of the connecting rod 5 close to the protective shell 4. Sliders 8 are fixedly connected to both the left and right sides of the movable block 7. The movable block 7 is connected to the sliders 8. When the movable block 7 moves, it can drive the sliders 8 to move together. Movable blocks 10 are slidably connected to both the left and right sides of the movable block 7. Chutes 9 are formed on the opposite sides of the two movable blocks 10. The two sliders 8 are respectively slidably connected to the interiors of the two chutes 9. The chutes 9 are used to cooperate with the sliders 8. By sliding the sliders 8 in the chutes 9, a thrust or pressure can be applied to the movable blocks 10. The shape of the movable blocks 10 is trapezoidal, and the shape of the movable block 7 is isosceles trapezoidal. Connecting blocks 11 are fixedly connected to both the upper and lower sides of the two movable blocks 10. The connecting blocks 11 are connected to the movable blocks 10 and can move together. Springs 13 are fixedly connected to the opposite sides of the two remote connecting blocks 11. The springs 13 are used to provide a reset reaction force. A sliding rod 12 is slidably connected to the interior of the connecting block 11. The left and right sides of the sliding rod 12 are respectively fixedly connected to the left and right sides of the interior of the protective shell 4. The sliding rod 12 is used to guide the sliding of the connecting block 11. The two springs 13 are respectively sleeved on the left and right ends of the sliding rod 12.

[0035] Referring to Figure 4 - Figure 6, a protection component is provided inside the first flange joint 1. The protection component is used to prevent liquid backflow. The protection component includes a limit block 21. The limit block 21 is fixedly connected to the top of the first flange joint 1. A baffle 14 is rotatably connected inside the first flange joint 1. The limit block 21 is used to connect the baffle 14. The baffle 14 is used to provide the function of preventing backflow. Buffer pads 15 are fixedly connected to both the front and rear sides of the baffle 14. The rear end of the limit block 21 is fixedly connected to the rear side of another buffer pad 15. The buffer pads 15 are used to provide a protective effect, reducing the impact force of the liquid on the baffle 14 and being able to extend the service life of the baffle 14. A second rotating block 20 is fixedly connected to the front side inside the first flange joint 1. A fixing rod 23 is rotatably connected inside the second rotating block 20. A compression spring 19 is fixedly connected inside the fixing rod 23. The compression spring 19 has the same function as the spring 13 and is used to provide a reset thrust. One end of the compression spring 19 away from the second rotating block 20 is fixedly connected to a sliding plate 18. The sliding plate 18 is used to facilitate the extrusion of the compression spring 19. The sliding plate 18 is slidably connected inside the fixing rod 23. A telescopic rod 17 is fixedly connected to the side of the sliding plate 18 away from the compression spring 19. The outer periphery of the telescopic rod 17 is rotatably connected to a first rotating block 16. The first rotating block 16 is fixedly connected to the front side of one of the buffer pads 15. The telescopic rod 17 can slide inside the fixing rod 23 when the baffle 14 rotates.

[0036] Working principle: When flanges are connected, first pull the two anti - detachment blocks 6. When the anti - detachment blocks 6 move, they can drive the connecting rod 5 to move together, and the connecting rod 5 will drive the movable block 7 to move together. When the movable block 7 moves, it will cause the two sliders 8 to slide in the chutes 9 opened in the two moving blocks 10, thereby exerting a thrust on the two moving blocks 10. After the moving blocks 10 receive the thrust, they will move. When the moving blocks 10 move, the connecting blocks 11 on their upper and lower sides will move along the sliding rods 12 together with the moving blocks 10. Thus, when the connecting blocks 11 move, they will squeeze the spring 13. After the movable block 7 is pulled to the extreme position, the second flange joint 2 can be brought into contact with the first flange joint 1 from either the left or right side of the first flange joint 1, and then slide along the rear side of the first flange joint 1 to align the threaded holes opened. After the second flange joint 2 moves to the appropriate position, the anti - detachment blocks 6 can be released. At this time, the movable block 7 loses the active pulling force of the anti - detachment blocks 6, so the connecting blocks 11 will also lose the active pressure on the spring 13. Then the spring 13 will reset and move, thereby pushing the connecting blocks 11 to move, enabling the moving blocks 10 to control the movable block 7 to move forward. When the movable block 7 moves, it will drive the connecting rod 5 and the anti - detachment blocks 6 to move. When the anti - detachment blocks 6 contact the rear side of the second flange joint 2, the fixation can be completed. Subsequently, the fixing bolts 3 can be used to connect the first flange joint 1 and the second flange joint 2 to complete the anti - detachment fixation;

[0037] Secondly, when the liquid flows from the back to the front within the flange joint 1, the impact force of the liquid will cause the baffle 14 to rotate. When the baffle 14 rotates under the impact, the telescopic rod 17 will drive the sliding plate 18 to slide within the fixed rod 23, causing the sliding plate 18 to exert an extrusion force on the compression spring 19. When the baffle 14 rotates, the fixed rod 23 and the telescopic rod 17 will also rotate correspondingly around the second rotating block 20 and the first rotating block 16 to adapt to the rotation of the baffle 14. After the liquid completely passes through the flange joint 1, the compression spring 19 will cause the baffle 14 to rotate back to its original position through the reaction force, and the liquid cannot control the baffle 14 to rotate backward, thus achieving the purpose of preventing backflow.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flange joint with an anti-loosening structure, comprising a first flange joint (1) and a second flange joint (2), characterized in that: The flange joint one (1) is slidably connected to the front side of the flange joint two (2). A plurality of uniformly distributed fixing bolts (3) are threadedly connected to the outer periphery of the flange joint one (1). Protective cases (4) are fixedly connected to both the upper and lower sides of the flange joint one (1). Link rods (5) are slidably connected to the interiors of the two protective cases (4). Anti-disengagement blocks (6) are fixedly connected to one ends of the two link rods (5) away from the two protective cases (4). An active block (7) is fixedly connected to the end of the link rod (5) close to the protective case (4). Sliders (8) are fixedly connected to both the left and right sides of the active block (7). Moving blocks (10) are slidably connected to both the left and right sides of the active block (7). Connection blocks (11) are fixedly connected to both the upper and lower sides of the two moving blocks (10). Springs (13) are fixedly connected to the opposite sides of the two connection blocks (11) that are far from each other. A slide rod (12) is slidably connected to the interior of the connection block (11). A protection assembly is provided inside the flange joint one (1), and the protection assembly is used to prevent liquid backflow.

2. The flange joint with an anti-loosening structure according to claim 1, characterized in that: The protection assembly includes a limit block (21), and the limit block (21) is fixedly connected to the top of the flange joint one (1). A baffle (14) is rotatably connected to the interior of the flange joint one (1). A rotating block two (20) is fixedly connected to the front side inside the flange joint one (1). A fixing rod (23) is rotatably connected to the interior of the rotating block two (20). A compression spring (19) is fixedly connected to the interior of the fixing rod (23). One end of the compression spring (19) away from the rotating block two (20) is fixedly connected to a sliding plate (18). An expansion rod (17) is fixedly connected to the side of the sliding plate (18) away from the compression spring (19). A rotating block one (16) is rotatably connected to the outer periphery of the expansion rod (17).

3. The flange joint with an anti-loosening structure according to claim 1, characterized in that: Rubber pads (22) are fixedly connected to the front sides of the two anti-disengagement blocks (6), and the two rubber pads (22) are respectively slidably connected to the upper and lower ends of the rear side of the flange joint two (2).

4. The flange joint with an anti-loosening structure according to claim 2, characterized in that: Buffer pads (15) are fixedly connected to both the front and rear sides of the baffle (14), and the rotating block one (16) is fixedly connected to the front side of one of the buffer pads (15).

5. The flange joint with an anti-loosening structure according to claim 1, characterized in that: Chute grooves (9) are formed on the opposite sides of the two moving blocks (10), and the two sliders (8) are respectively slidably connected to the interiors of the two chute grooves (9).

6. The flange joint with an anti-loosening structure according to claim 1, characterized in that: The left and right sides of the slide rod (12) are respectively fixedly connected to the left and right sides inside the protective case (4), and the two springs (13) are respectively sleeved on the left and right ends of the slide rod (12).

7. The flange joint with an anti-loosening structure according to claim 4, characterized in that: The rear end of the limit block (21) is fixedly connected to the rear side of the other buffer pad (15).

8. The flange joint with an anti-loosening structure according to claim 2, wherein: The sliding plate (18) is slidably connected to the interior of the fixing rod (23).

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