Eccentric variable-diameter combined flange

Abstract

The utility model relates to the technical field of flange connecting pieces, in particular to an eccentric variable-diameter combined flange. The device comprises a reducing pipe, a fixing ring and an anti-falling mechanism, the two ends of the reducing pipe are eccentrically arranged, a connecting ring a and a connecting ring b which are staggered are integrally formed at the two ends of the outer wall of the reducing pipe, the fixing ring is arranged at the end, close to the connecting ring a, in the reducing pipe, a connecting frame and a filtering disc are arranged on one side of the fixing ring, and the anti-falling mechanism is arranged on the connecting frame. According to the utility model, the filter disc is clamped and mounted in the flange through the fixing ring, the connecting frame and the anti-falling mechanism, and when two groups of flanges are butted, the two groups of flanges are in contact with each other, and the flanges butted with the flanges extrude the push block through the pressing plate, so that the push block moves to promote the sliding plate to drive the anti-falling baffle to penetrate through the connecting frame; and after the flange is detached, the limiting of the flange can be automatically relieved, and the convenience of the whole flange on the maintenance and replacement of the filter disc is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange connectors, in particular to an eccentric variable-diameter combined flange. Background Art

[0002] An eccentric reducing flange is a special type of flange used for pipeline connection. Its design enables the pipeline to be offset or adjusted at a certain angle during connection without affecting the connection performance and sealing performance of the pipeline. This type of flange is usually used in occasions where the pipeline needs to be slightly adjusted during installation or maintenance. For example, in the connection of pipelines on different planes or at different heights, it includes a flange ring, and there is a specific eccentric distance between the central axis of its inner hole and the central axis of the outer surface of the flange ring. This enables a certain degree of offset during connection, thus solving the problem of misalignment or angular deviation caused by pipeline layout.

[0003] Chinese Patent with the authorization announcement number CN215173016U discloses a reducing flange. It is provided with a corrugated pipe in the middle of the flange. The corrugated pipe can make up for certain installation tolerances, reduce the installation difficulty, and has good sealing performance. A filter screen is rotatably arranged at the end of the flange to filter the flowing medium.

[0004] However, the above-mentioned filter screen is rotatably arranged inside the flange through a bearing. Once it is damaged, it is not convenient to replace the filter screen even if the flange is removed, resulting in low maintainability. Summary of the Utility Model

[0005] In view of the problems existing in the background art, an eccentric variable-diameter combined flange is proposed. A filter disk is snap-fitted and installed inside the flange through a fixed ring, a connecting frame and an anti-detachment mechanism. When two groups of flanges are butted, they will contact each other. The flange butt-jointed with it will squeeze the push block through a pressing plate, so that the push block moves to drive the sliding plate to drive the anti-detachment baffle to pass through the connecting frame, thereby limiting the installation of the filter disk between the anti-detachment block and the fixed ring. After the flange is disassembled, the limit will be automatically released, improving the convenience of the overall flange for maintaining and replacing the filter disk.

[0006] The utility model proposes an eccentric variable-diameter combined flange, including

[0007] A reducing pipe, whose two ends are eccentrically arranged, and connecting rings a and b which are integrally formed at both ends of its outer wall and are offset from each other;

[0008] A fixed ring, arranged at one end of the reducing pipe close to connecting ring a, and a connecting frame and a filter disk are arranged on one side thereof; and

[0009] An anti-detachment mechanism, arranged on the connecting frame, for indirectly installing and limiting the filter disk during flange assembly.

[0010] Preferably, a plurality of connecting frames are provided, which are equidistantly arranged on the fixing ring in a circumferential manner, and a notch which is engaged with the connecting frame is provided on the outer side of the filter disc.

[0011] Preferably, the anti-slip mechanism includes a slide plate, an anti-slip block, a push block and a pressure plate. The slide plate is arranged on the inner side of the connecting frame for transverse sliding, and an anti-slip block is arranged in the middle of its side surface, and springs a are arranged at both ends of the side surface. The end of the spring a facing away from the slide plate is slidably connected to the inner wall of the connecting frame; the push block is arranged on the inner side of the connecting frame for longitudinal sliding, and a spring b is connected between it and the bottom wall of the connecting frame, and the end of the push block facing away from the spring b is connected to the pressure plate.

[0012] Preferably, a through hole is provided on the connecting frame for the anti-slip block to pass through, and the anti-slip block passes through the through hole and abuts against the end surface of the filter disc.

[0013] Preferably, the push block is provided with a flat section and a convex section, an oblique connecting section is provided between the flat section and the convex section, and a roller is contactingly provided on the push block, and the roller is rotatably connected to the slide plate.

[0014] Preferably, an annular groove is provided on the connecting ring a, and the pressure plate is configured as an L-shaped structure, a vertical section of which is connected to the push block, and a horizontal section of which extends into the range of the annular groove.

[0015] Through the above technical scheme, that is, the combined flange disclosed by the utility model is equipped with a filter disc through a fixing ring, a connecting frame and an anti-slip mechanism in the flange. With the cooperation of the slide plate, the anti-slip block, the push block and the pressure plate, when the two sets of flanges are assembled, they will contact each other, and the flange docked with them will squeeze the push block through the pressure plate to make the push block move, thereby driving the raised section of the push block to face the slide plate, so that the slide plate drives the anti-slip baffle to pass through the connecting frame, thereby limiting the filter disc and installing it between the anti-slip block and the fixing ring. After the flange is disassembled, it will automatically release the limit, thereby improving the overall convenience for maintenance and replacement of the filter disc.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of an eccentric variable diameter combined flange structure of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the partial structure of ;

[0019] Figure 3 for Figure 1 A schematic diagram of an enlarged side section structure of a connecting frame;

[0020] Figure 4 for Figure 3Schematic diagram of the internal structure of the connecting frame when the filtering disc is released from the limit state.

[0021] Reference numerals: 1, reducing pipe; 2, connecting ring a; 3, connecting ring b; 4, fixing ring; 5, connecting frame; 6, filtering disc; 7, notch; 8, sliding plate; 9, anti-disengagement block; 10, pushing block; 11, pressing plate; 12, spring a; 13, spring b; 14, through hole; 15, roller; 16, annular groove. Detailed implementation manners

[0022] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustration and explanation of the present disclosure, and are not used to limit the present disclosure.

[0023] Embodiment 1

[0024] As Figures 1-4 shown, a variable-diameter combined flange with eccentricity proposed by the present utility model includes a reducing pipe 1, a fixing ring 4 and an anti-disengagement mechanism. The two ends of the reducing pipe 1 are eccentrically arranged, and connecting rings a 2 and b 3 that are offset from each other are integrally formed at both ends of its outer wall. A fixing ring 4 is arranged at one end of the reducing pipe 1 close to the connecting ring a 2. A connecting frame 5 and a filtering disc 6 are arranged on one side of the fixing ring 4. An anti-disengagement mechanism for installing and limiting the filtering disc 6 during the docking and installation of the flange is arranged on the connecting frame 5.

[0025] As Figure 1 shown, multiple groups of connecting frames 5 are arranged and are equidistantly arranged in a circle on the fixing ring 4. A notch 7 that is fitted with the connecting frame 5 is arranged on the outer side of the filtering disc 6.

[0026] When installing the filtering disc 6, align the notch 7 of the filtering disc 6 with the connecting frame 5 so that it is embedded between the three connecting frames 5.

[0027] As Figure 3 shown, the anti-disengagement mechanism includes a sliding plate 8, an anti-disengagement block 9, a pushing block 10 and a pressing plate 11. The sliding plate 8 is horizontally slidably arranged inside the connecting frame 5. An anti-disengagement block 9 is arranged in the middle of its side surface, and springs a 12 are arranged at both ends of its side surface. The ends of the springs a 12 away from the sliding plate 8 are slidably connected to the inner wall of the connecting frame 5; the pushing block 10 is longitudinally slidably arranged inside the connecting frame 5. A spring b 13 is connected between it and the bottom wall of the connecting frame 5, and a pressing plate 11 is connected to the end of it away from the spring b 13.

[0028] As Figure 3 shown, the pushing block 10 is provided with a flat section and a convex section, and an inclined connecting section is arranged between the flat section and the convex section. A roller 15 is in contact with the pushing block 10, and the roller 15 is rotatably connected to the sliding plate 8. By setting the roller 15, the pushing block 10 can move vertically relative to the sliding plate 8.

[0029] Among them, the spring b13 supports the push block 10 to a certain height without external force. At this time, the flat section of the push block 10 faces the slide plate 8, and there is a telescopic space behind the slide plate 8. Therefore, the slide plate 8 will drive the stopper to retract into the moving frame under the action of the spring a12.

[0030] Embodiment 2

[0031] As Figures 1-4 shown, a variable-diameter combined flange with eccentricity proposed by the present utility model, on the basis of the above embodiment, this embodiment also details the limiting manner of the anti-disengagement mechanism for the filter disc 6.

[0032] As Figure 4 shown, a through hole 14 for the anti-disengagement stopper 9 to pass through is provided on the connecting frame 5. The anti-disengagement stopper 9 passes through the through hole 14 and abuts against the end face of the filter disc 6. By applying a thrust force to the slide plate 8 through the push block 10, the push block 10 drives the anti-disengagement baffle to pass through the connecting frame 5 to limit the filter disc 6.

[0033] As Figure 2 shown, an annular groove 16 is provided on the connecting ring a2. The pressing plate 11 is arranged in an L-shaped structure, its vertical section is connected to the push block 10, and its horizontal section extends into the range of the annular groove 16. When the flange is docked with other pipe fittings, its horizontal end will be pressed into the annular groove 16.

[0034] Among them, when the flange is docked with other pipe fittings, the connecting ring a2 thereon will be docked with other flange rings. Then, the butt-jointed flange ring and the end face of the connecting ring a2 remain in a fitting state, and it will apply a pressing force towards the inside of the annular groove 16 to the pressing plate 11. Under the action of the pressing force, the pressing plate 11 drives the push block 10 to squeeze the spring b13. During the squeezing process, the push block 10 will move accordingly, so that the protruding section of the push block 10 faces the slide plate 8. Then, the protruding section of the push block 10 applies a horizontal thrust force to the slide plate 8. The slide plate 8 squeezes the spring a12 under the action of the thrust force and drives the anti-disengagement stopper 9 to pass through the through hole 14 to abut against the filter disc 6, preventing the filter disc 6 from detaching from the fixed ring 4. When the filter disc 6 needs to be maintained, by disassembling the flange, after disassembly, the pressing plate 11 loses the pressing force. Then, the push block 10 and the anti-disengagement stopper 9 are reset under the action of the spring b13 and the spring a12 respectively. At this time, the filter disc 6 can be removed from the fixed ring 4, and the overall maintainability is relatively strong.

[0035] The above has described in detail the embodiments of the present utility model with reference to the accompanying drawings. However, the present utility model is not limited to this. Various changes can be made without departing from the gist of the present utility model within the knowledge scope of those skilled in the art to which it belongs.

Claims

1. An eccentric variable-diameter combined flange, characterized in that, include A reducer (1) having two ends eccentrically arranged, and having two ends of its outer wall integrally formed with a connecting ring a (2) and a connecting ring b (3) that are staggered with each other; A fixing ring (4) is arranged in the reducer (1) at one end close to the connecting ring a (2), and a connecting frame (5) and a filter plate (6) are arranged on one side thereof; and The anti-drop mechanism is arranged on the connecting frame (5) and is used to limit the installation position of the filter plate (6) when the flanges are butt-jointed.

2. The eccentric variable-diameter combined flange according to claim 1, wherein, The connecting frames (5) are provided in multiple groups and are arranged on the fixing ring (4) at equal intervals in a circumference. The outer side of the filter disc (6) is provided with a notch (7) which is engaged with the connecting frame (5).

3. The eccentric variable-diameter combined flange according to claim 1, characterized in that, The anti-slip mechanism comprises a slide plate (8), an anti-slip stopper (9), a push block (10) and a pressure plate (11); the slide plate (8) is arranged to slide transversely inside the connecting frame (5); an anti-slip stopper (9) is arranged in the middle of the side surface; springs a (12) are arranged at both ends of the side surface; and one end of the spring a (12) facing away from the slide plate (8) is slidably connected to the inner wall of the connecting frame (5); The push block (10) is longitudinally slidably arranged inside the connecting frame (5), a spring b (13) is connected between the push block and the bottom wall of the connecting frame (5), and a pressure plate (11) is connected to the end of the push block facing away from the spring b (13).

4. The eccentric variable-diameter combined flange according to claim 3, characterized in that, The connecting frame (5) is provided with a through hole (14) for the anti-slip block (9) to pass through, and the anti-slip block (9) passes through the through hole (14) and abuts against the end surface of the filter disc (6).

5. The eccentric variable-diameter combined flange according to claim 3, characterized in that, The push block (10) is provided with a flat section and a convex section, an oblique connecting section is provided between the flat section and the convex section, a roller (15) is contactingly provided on the push block (10), and the roller (15) is rotatably connected to the slide plate (8).

6. The variable-diameter combined flange with eccentricity according to claim 3, characterized in that An annular groove (16) is provided on the connecting ring a (2), and the pressing plate (11) is arranged as an L-shaped structure, the vertical section of which is connected to the push block (10), and the horizontal section of which extends into the range of the annular groove (16).

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