A pipe-to-pipe channelled fabricated flexible joint
By designing a grooved flexible joint between pipes and using structures such as rubber joints, snap rings, and sealing airbags, the problems of inconvenient connection and poor sealing of existing assembled flexible joints have been solved, achieving convenient connection and sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI INSTALLATION ENGINEERING GROUP CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-09
AI Technical Summary
Existing prefabricated flexible joints are prone to problems during connection due to misalignment of the flanges, which can affect their performance and result in poor sealing and leakage.
A grooved prefabricated flexible joint for pipelines was designed, which adopts a structure including a rubber joint, elastic clamp, retaining ring, threaded rod, bevel gear and sealing airbag. The retaining ring and threaded rod work together to achieve convenient connection and sealing of pipelines, and the sealing airbag is used for inflation and sealing.
It achieves convenient pipe connection and sealing effect, can adapt to pipe deviation, prevent leakage, and improve the reliability and sealing of the connection.
Smart Images
Figure CN224339699U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connectors, and more specifically, to a grooved, assembled flexible joint for pipe connections. Background Technology
[0002] Flexible joints for pipelines play an important role in pipeline systems. They are suitable for a variety of pipeline systems and engineering needs, can withstand slight deformation, displacement and vibration of the system, reduce system stress, enhance the reliability of the connection, ensure the sealing of the pipeline connection, prevent leakage, and are suitable for a variety of media and environments. They are widely used in fire protection, HVAC, water supply and drainage, liquid and gas pipeline equipment.
[0003] However, most prefabricated flexible joints currently have the following problems:
[0004] Existing prefabricated flexible joints are mostly connected using flanges and multiple bolts. However, during pipeline installation, the upper and lower sections of the flexible joint often cannot be aligned due to dimensional deviations in the vertical or horizontal directions, affecting the performance and hindering convenient connection. Furthermore, to ensure a tight seal, existing prefabricated flexible joints typically use flanges and gaskets for leak prevention. However, flexible joints are prone to bending and deformation, which can cause flanges to fail to seal properly, affecting material conveying efficiency and hindering adequate sealing protection.
[0005] Therefore, we have made improvements to this by proposing a prefabricated flexible joint with a grooved design between pipes. Utility Model Content
[0006] The purpose of this utility model is to address the current problems of inconvenience in convenient connection and use, and inconvenience in adequate sealing and protection.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] Prefabricated flexible joints with grooves between pipes are used to improve the above problems.
[0009] The application is as follows:
[0010] The device includes a rubber joint, an elastic retaining plate fixedly connected to the rubber joint, a first retaining ring provided on the rubber joint, a first threaded rod threadedly connected to the first retaining ring, a second retaining ring rotatably connected to the first threaded rod, a dust cover provided on the first retaining ring, a spring fixedly connected inside the first retaining ring, a limit plate fixedly connected to the other end of the spring, a retaining block fixedly connected to the limit plate, a pull rod fixedly connected to the limit plate, a connecting pipe provided on the rubber joint, a flange fixedly connected to the connecting pipe, a sealing airbag fixedly connected inside the rubber joint, a connecting hose fixedly connected to the sealing airbag, a fixed box fixedly connected to the connecting hose, the fixed box fixedly connected to the rubber joint, a rotating rod rotatably connected to the fixed box, a first bevel gear fixedly connected to the rotating rod, a second bevel gear meshing with the first bevel gear, and a second threaded rod fixedly connected to the second bevel gear.
[0011] As a preferred technical solution of this application, the elastic retaining plates are distributed at equal angles on the rubber joint, and the cross-sections of the first retaining ring and the second retaining ring are arc-shaped.
[0012] As a preferred technical solution of this application, the springs are symmetrically distributed on the left and right sides inside the first retaining ring, and the springs correspond one-to-one with the retaining blocks through the limiting plates.
[0013] As a preferred technical solution of this application, the side end face of the limiting plate is in contact with the inner side face of the first retaining ring, and the length of the retaining block is less than the length of the pull rod.
[0014] As a preferred technical solution of this application, the second bevel gear is symmetrically distributed on the left and right sides of the first bevel gear, and the second bevel gear corresponds one-to-one with the threaded sleeve through the second threaded rod.
[0015] As a preferred technical solution of this application, the second threaded rod is rotatably connected inside the fixed box, a threaded sleeve is threadedly connected to the second threaded rod, a piston plate is fixedly connected to the threaded sleeve, and the second threaded rod is fixedly connected to the center part of one side of the second bevel gear.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] In the scheme of this application:
[0018] 1. Equipped with a rubber joint; when connecting the rubber joint to the connecting pipe, the connecting pipe and flange can be inserted into the rubber joint. If the connecting pipe is large and the rubber joint needs to be expanded, the rubber joint can be opened and unfolded under the action of the elastic clamping plate so that it can be fitted onto the connecting pipe. The first and second retaining rings are fitted onto the rubber joint, and the first threaded rod is rotated to adjust the position of the first and second retaining rings. This can tighten and fix the connection between the rubber joint and the connecting pipe, improving the connection effect. Moreover, the rubber joint is elastic after connection, and if there is any deviation in the connecting pipe, it can be finely adjusted and adapted.
[0019] 2. Equipped with a sealing airbag; when sealing the connection between the flange and the rubber joint on the connecting pipe, the rotating rod on the fixed box can be rotated to drive the first bevel gear to rotate. The first bevel gear can drive the second threaded rod to rotate through the second bevel gear. The rotation of the second threaded rod can push the threaded sleeve to move. When the threaded sleeves on both sides move outward at the same time, the gas in the fixed box can be pushed into the sealing airbag through the connecting hose via the piston plate, inflating the sealing airbag and sealing it with the flange to prevent leakage. Attached Figure Description
[0020] Figure 1 A schematic diagram of the overall three-dimensional structure of the prefabricated flexible joint with a trench type for pipelines provided in this application;
[0021] Figure 2 A side view of the rubber joint structure of the grooved prefabricated flexible joint for pipelines provided in this application;
[0022] Figure 3 A side view of the elastic clamping plate structure of the prefabricated flexible joint with a trench-type pipe joint provided in this application;
[0023] Figure 4 A side view of the first retaining ring structure of the grooved prefabricated flexible joint for pipelines provided in this application;
[0024] Figure 5 The grooved prefabricated flexible joint for pipelines provided in this application Figure 4 Enlarged structural diagram at point A in the middle;
[0025] Figure 6 The grooved prefabricated flexible joint for pipelines provided in this application Figure 2 Enlarged structural diagram at point B;
[0026] Figure 7 The grooved prefabricated flexible joint for pipelines provided in this application Figure 2 Enlarged structural diagram at point C.
[0027] The diagram shows: 1. Rubber joint; 2. Elastic retaining plate; 3. First retaining ring; 4. Second retaining ring; 5. First threaded rod; 6. Dust cover; 7. Spring; 8. Limiting plate; 9. Locking block; 10. Pull rod; 11. Connecting pipe; 12. Flange; 13. Sealing airbag; 14. Connecting hose; 15. Fixing box; 16. Rotating rod; 17. First bevel gear; 18. Second bevel gear; 19. Second threaded rod; 20. Threaded sleeve; 21. Piston plate. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0029] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0033] Example 1:
[0034] like Figure 1-7As shown, this embodiment proposes a grooved prefabricated flexible joint for pipes, including a rubber joint 1, an elastic retaining plate 2 fixedly connected to the rubber joint 1, a first retaining ring 3 provided on the rubber joint 1, a first threaded rod 5 threadedly connected to the first retaining ring 3, a second retaining ring 4 rotatably connected to the first threaded rod 5, a dust cover 6 provided on the first retaining ring 3, a spring 7 fixedly connected inside the first retaining ring 3, a limit plate 8 fixedly connected to the other end of the spring 7, a retaining block 9 fixedly connected to the limit plate 8, and a pull rod 10 fixedly connected to the limit plate 8. A connecting pipe 11 is provided on the head 1, and a flange 12 is fixedly connected to the connecting pipe 11. A sealing airbag 13 is fixedly connected inside the rubber joint 1. A connecting hose 14 is fixedly connected to the sealing airbag 13. A fixing box 15 is fixedly connected to the connecting hose 14. The fixing box 15 is fixedly connected to the rubber joint 1. A rotating rod 16 is rotatably connected to the fixing box 15. A first bevel gear 17 is fixedly connected to the rotating rod 16. A second bevel gear 18 is meshed with the first bevel gear 17. A second threaded rod 19 is fixedly connected to the second bevel gear 18.
[0035] Example 2:
[0036] The solution in Example 1 will be further described below with reference to its specific working method.
[0037] like Figure 4 As shown, in a preferred embodiment, based on the above method, the elastic retaining plates 2 are distributed at equal angles on the rubber joint 1, and the cross-sections of the first retaining ring 3 and the second retaining ring 4 are arc-shaped, which can ensure that the first retaining ring 3 and the second retaining ring 4 can limit the connection between the rubber joint 1 and the connecting pipe 11.
[0038] like Figure 5 As shown, in a preferred embodiment, based on the above method, the springs 7 are symmetrically distributed on the left and right sides inside the first retaining ring 3. The springs 7 correspond one-to-one with the retaining blocks 9 through the limiting plate 8, which can ensure that the retaining blocks 9 on both sides can be respectively engaged in the dust cover 6 for fixed positioning.
[0039] like Figure 5 As shown, in a preferred embodiment, based on the above method, the side end face of the limiting plate 8 is further fitted with the inner side face of the first retaining ring 3, and the length of the retaining block 9 is less than the length of the pull rod 10, which can ensure that the limiting plate 8 can move smoothly through the fit of the inner side face of the first retaining ring 3 when it moves.
[0040] like Figure 6As shown, in a preferred embodiment, based on the above method, the second bevel gear 18 is symmetrically distributed on the left and right sides of the first bevel gear 17. The second bevel gear 18 corresponds one-to-one with the threaded sleeve 20 through the second threaded rod 19, which can ensure that the threaded sleeves 20 on both sides can cooperate with the piston plate 21 to inflate the sealing airbags 13 on the upper and lower sides.
[0041] like Figure 6 As shown, in a preferred embodiment, based on the above method, the second threaded rod 19 is rotatably connected to the fixed box 15, and a threaded sleeve 20 is threadedly connected to the second threaded rod 19. A piston plate 21 is fixedly connected to the threaded sleeve 20. The second threaded rod 19 is fixedly connected to the center part of one side of the second bevel gear 18, which can ensure that the second bevel gear 18 can drive the second threaded rod 19 to rotate smoothly when it rotates.
[0042] Specifically, when using the grooved prefabricated flexible joint between pipes: [combined with...] Figure 1-7 When connecting the rubber joint 1 to the connecting pipe 11, the connecting pipe 11 and the flange 12 can be inserted into the rubber joint 1. If the connecting pipe 11 is too large and the rubber joint 1 needs to be expanded, the rubber joint 1 can be opened and unfolded under the action of the elastic clamping plate 2 so that it can be fitted onto the connecting pipe 11. The first retaining ring 3 and the second retaining ring 4 are then fitted onto the rubber joint 1. The first threaded rod 5 is rotated to adjust the position of the first retaining ring 3 and the second retaining ring 4, which can tighten and fix the connection between the rubber joint 1 and the connecting pipe 11, improving the connection effect. After the rubber joint 1 is connected, it has... The elasticity of the connecting pipe 11 allows for fine adjustments to accommodate any deviations. When protection of the first threaded rod 5 is required, the pull rods 10 on both sides of the first retaining ring 3 can be pulled to move the limiting plate 8. The limiting plate 8 can compress the spring 7, while simultaneously retracting the locking block 9 into the first retaining ring 3. The dust cover 6 can be inserted into the first retaining ring 3. Releasing the pull rod 10 will cause the limiting plate 8 and locking block 9 to reset under the push of the spring 7. The locking block 9 can then engage with the dust cover 6 for fixation. The dust cover 6 can protect the first threaded rod 5 from impacts that could affect the sealing effect.
[0043] When sealing the connection between the flange 12 on the connecting pipe 11 and the rubber joint 1, the rotating rod 16 on the fixed box 15 can be rotated to drive the first bevel gear 17 to rotate. The first bevel gear 17 can drive the second threaded rod 19 to rotate through the second bevel gear 18. The rotation of the second threaded rod 19 can push the threaded sleeve 20 to move. When the threaded sleeves 20 on both sides move outward at the same time, the gas in the fixed box 15 can be pushed into the sealing airbag 13 through the connecting hose 14 through the piston plate 21. The sealing airbag 13 is inflated and fits and seals with the flange 12 to avoid leakage.
[0044] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, as well as all technical solutions and improvements that do not depart from the spirit and scope of practicality, are covered within the scope of the claims of the present utility model.
Claims
1. A grooved prefabricated flexible joint for pipelines, comprising a rubber joint (1), characterized in that, An elastic retaining plate (2) is fixedly connected to the rubber joint (1). A first retaining ring (3) is provided on the rubber joint (1). A first threaded rod (5) is threadedly connected to the first retaining ring (3). A second retaining ring (4) is rotatably connected to the first threaded rod (5). A dust cover (6) is provided on the first retaining ring (3). A spring (7) is fixedly connected inside the first retaining ring (3). A limit plate (8) is fixedly connected to the other end of the spring (7). A retaining block (9) is fixedly connected to the limit plate (8). A pull rod (10) is fixedly connected to the limit plate (8). A connecting pipe (11) is provided on the rubber joint (1). A flange (12) is fixedly connected to the connecting pipe (11). A sealing airbag (13) is fixedly connected inside the rubber joint (1). A connecting hose (14) is fixedly connected to the sealing airbag (13). A fixing box (15) is fixedly connected to the connecting hose (14). The fixing box (15) is fixedly connected to the rubber joint (1). A rotating rod (16) is rotatably connected to the fixing box (15). A first bevel gear (17) is fixedly connected to the rotating rod (16). A second bevel gear (18) is meshed with the first bevel gear (17). A second threaded rod (19) is fixedly connected to the second bevel gear (18).
2. The prefabricated flexible joint with a grooved design between pipes according to claim 1, characterized in that, The elastic retaining plates (2) are distributed at equal angles on the rubber joint (1), and the cross-sections of the first retaining ring (3) and the second retaining ring (4) are arc-shaped.
3. The prefabricated flexible joint with a grooved design between pipes according to claim 1, characterized in that, The springs (7) are symmetrically distributed on the left and right sides inside the first retaining ring (3), and the springs (7) correspond one-to-one with the retaining blocks (9) through the limiting plate (8).
4. The prefabricated flexible joint with a grooved design between pipes according to claim 1, characterized in that, The side end face of the limiting plate (8) is in contact with the inner side of the first retaining ring (3), and the length of the retaining block (9) is less than the length of the pull rod (10).
5. A grooved prefabricated flexible joint for pipelines according to claim 1, characterized in that, The second bevel gear (18) is symmetrically distributed on the left and right sides of the first bevel gear (17), and the second bevel gear (18) corresponds one-to-one with the threaded sleeve (20) through the second threaded rod (19).
6. The prefabricated flexible joint with a grooved design between pipes according to claim 1, characterized in that, The second threaded rod (19) is rotatably connected inside the fixed box (15). A threaded sleeve (20) is threadedly connected to the second threaded rod (19). A piston plate (21) is fixedly connected to the threaded sleeve (20). The second threaded rod (19) is fixedly connected to the center part of one side of the second bevel gear (18).