An easily installed flange plate connecting plate

Abstract

The utility model belongs to pipeline connection technical field especially relates to an easy to install flange plate connecting plate, annular block is fixedly connected in first pipe body one end lateral wall through welding or injection molding integrated molding, the outer diameter is greater than first pipe body, provides installation base and axial limit support for annular flange, annular flange is annular structure, is set up in annular block outside, can rotate around first pipe body centre axis, is used for with fastening ring cooperation realizes two pipe body fastening, the gradual expansion portion is integrally formed or welded fixed with second pipe body, is conical expansion structure, is set up in first pipe body one end outside, provides extrusion deformation space for sealing assembly, fastening ring is integrally formed in gradual expansion portion end, as the stress carrier of fastening unit, sealing assembly sets up between gradual expansion portion and annular block, is used for preventing leakage, connecting assembly sets up between fastening ring and annular flange, is used for detachable type fixed two pipe body, transfers fastening force.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline connection technology, and in particular relates to an easy-to-install flange connection plate. Background Technology

[0002] In municipal engineering, industrial production, and civil facilities, pipeline systems are the core carriers of fluid transportation, and the reliability and convenience of pipeline connections directly affect the operating efficiency and maintenance costs of the entire system. Flange connections, as one of the mainstream pipeline connection methods, are widely used due to their advantages such as high connection strength and easy disassembly. However, traditional flange connections have a complex structure, and their sealing performance relies on a single sealing element. After long-term use or repeated disassembly, the risk of fluid leakage increases. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned technical problems by providing an easy-to-install flange connection plate, thereby solving the problems mentioned in the background art.

[0004] In view of this, the present invention provides an easy-to-install flange connection plate, comprising a first pipe body and a second pipe body; An annular block is fixedly connected to one end of the side wall of the first tube. Annular flange, with an annular flange connected to the outer side of the annular block; A gradually expanding section is provided on the second tube body and fitted onto the first tube body; A fastening ring is fixedly connected to the end of the gradually expanding section; A sealing assembly is provided between the expanding portion and the annular block; A connecting assembly is provided between the fastening ring and the annular flange.

[0005] In the above technical solution, the connecting component further includes: Connection holes: Several connection holes are circumferentially provided on both the annular flange and the fastening ring; A guide portion is provided on the annular flange, extending along the outside of the connection hole; An eccentric bolt has its shank passing through the connection hole between the annular flange and the fastening ring, with its head abutting against the fastening ring. Nuts are threaded to the shank of eccentric bolts.

[0006] In the above technical solution, the sealing component further includes: The first sealing ring is provided inside the gradually expanding portion and is sleeved on the outer wall of the first tube. The second sealing ring is also fitted on the outer wall of the first tube, with its two ends abutting against the annular block and the first sealing ring, respectively.

[0007] In the above technical solution, the first sealing ring is provided with a concave ring groove at one end near the second sealing ring, and the second sealing ring is connected to a convex ring block that matches the concave ring groove at one end near the first sealing ring.

[0008] In the above technical solution, the outer circumferential surface of the annular block is provided with a sliding annular groove, and the inner circumferential surface of the annular flange is provided with a sliding protrusion that matches the sliding annular groove.

[0009] In the above technical solution, a further step is to provide an abutment ring between the head of the eccentric bolt and the fastening ring.

[0010] In the above technical solution, a compression groove is further provided at the end of the first sealing ring away from the second sealing ring.

[0011] In the above technical solution, the guide part is further shaped as a semi-cylindrical part to restrict the eccentric bolt from rotating arbitrarily.

[0012] The beneficial effects of this utility model are as follows: 1. The double seal, interlocking structure, and extrusion groove deformation design provide excellent leak prevention and the sealing performance does not significantly decrease after repeated disassembly and reassembly.

[0013] 2. Axial positioning of the flange is achieved through sliding ring grooves and sliding protrusions, eliminating the need for additional positioning components and reducing manufacturing costs.

[0014] 3. The ring flange can be rotated flexibly to align the bolt holes without moving the pipes, thus shortening the installation time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is a structural cross-sectional view of the present invention; Figure 4 This is a utility model Figure 3 A magnified view of a section at point A in the middle; The markings in the diagram are as follows: 1-First pipe body, 2-Second pipe body, 3-Annular block, 4-Annular flange, 5-Gradually expanding part, 6-Fastening ring, 7-Connecting hole, 8-Guide part, 9-Eccentric bolt, 10-Nut, 11-First sealing ring, 12-Second sealing ring, 13-Concave ring groove, 14-Protruding ring block, 15-Sliding ring groove, 16-Sliding protrusion, 17-Abutting ring, 18-Extrusion groove. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0017] Example 1: This embodiment provides an easy-to-install flange connection plate, including a first pipe body 1 and a second pipe body 2; An annular block 3 is fixedly connected to one end sidewall of the first tube 1; Annular flange 4 is connected to the outer side of annular block 3; The second tube 2 is provided with a gradually expanding portion 5 that is sleeved on the first tube 1; The end of the gradually expanding portion 5 is fixedly connected with a fastening ring 6; A sealing assembly is provided between the expanding portion 5 and the annular block 3; A connecting assembly is provided between the fastening ring 6 and the annular flange 4.

[0018] As can be seen in this embodiment, the annular block 3 is made of metal or high-strength engineering plastic and is fixedly connected to one end of the side wall of the first pipe body 1 by welding or injection molding. Its outer diameter is larger than that of the first pipe body 1, providing a mounting base and axial limiting support for the annular flange 4. The annular flange 4 has an annular structure and is sleeved on the outside of the annular block 3. It can rotate around the central axis of the first pipe body 1 and is used to cooperate with the fastening ring 6 to fasten the two pipe bodies. The expanding part 5 is integrally formed or welded to the second pipe body 2 and has a conical expansion structure. It is sleeved on the outside of one end of the first pipe body 1 and has an inclined inner wall to provide a compression deformation space for the sealing assembly. The fastening ring 6 is integrally formed at the end of the expanding part 5 and serves as the force carrier of the fastening unit. The sealing assembly is set between the expanding part 5 and the annular block 3 to prevent leakage. The connecting assembly is set between the fastening ring 6 and the annular flange 4 to detachably fix the two pipe bodies and transmit the fastening force.

[0019] Example 2: This embodiment provides an easy-to-install flange connection plate, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0020] The connection components include: Connection holes 7 are provided on both the annular flange 4 and the fastening ring 6. Guide portion 8, the annular flange 4 is provided with a guide portion 8 extending along the outside of the connection hole 7; Eccentric bolt 9, the shank of eccentric bolt 9 passes through the connection hole 7 on the annular flange 4 and the fastening ring 6, and its head abuts against the fastening ring 6; Nut 10 is threaded to the shank of eccentric bolt 9.

[0021] As can be seen in this embodiment, the connecting holes 7 are evenly distributed along the circumference of the annular flange 4, with a quantity of 4-8 holes. The diameter of the connecting holes 7 is 0.2-0.5mm larger than the diameter of the shank of the eccentric bolt 9 to avoid installation jamming. The guide part 8 extends along the outside of the connecting holes 7 and is semi-cylindrical. Its inner wall shape is adapted to the head cross-sectional shape of the eccentric bolt 9, restricting the eccentric bolt 9 from rotating freely around the shank axis and only allowing the bolt to move axially. This ensures that the bolt head is always in contact with the fastening ring 6, preventing bolt offset during tightening. The shank of the eccentric bolt 9 has external threads, and the head is rectangular or elliptical. There is an eccentricity between the center of the head and the center of the shank. During tightening, the head abuts against the fastening ring 6, generating axial preload through the eccentric structure, bringing the annular flange 4 and the fastening ring 6 closer together, enhancing the tightness of the connection. The nut 10 matches the thread of the shank of the eccentric bolt 9. After tightening the nut 10, the position of the eccentric bolt 9 is locked to prevent loosening.

[0022] Example 3: This embodiment provides an easy-to-install flange connection plate, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0023] The sealing assembly includes: The first sealing ring 11 is provided inside the gradually expanding portion 5 and is sleeved on the outer wall of the first tube body 1. The second sealing ring 12 is also fitted on the outer wall of the first tube body 1, and the two ends of the second sealing ring 12 abut against the annular block 3 and the first sealing ring 11 respectively.

[0024] As can be seen in this embodiment, a first sealing ring 11 is abutted inside the expanding section 5 and is sleeved on the outer wall of the first tube body 1, directly contacting the conical inner wall of the expanding section 5. It adapts to the compression deformation of the expanding section 5 and can directly intercept the fluid flowing out from the joint gap between the two tube bodies. The first sealing ring 11 is made of an elastic material, such as nitrile rubber, which is suitable for water and oil fluids, and fluororubber, which is suitable for corrosive fluids, and has good aging resistance. The second sealing ring 12 is sleeved on the outer wall of the first tube body 1, located between the annular block 3 and the first sealing ring 11, with its two ends abutting against the end face of the annular block 3 and the end face of the first sealing ring 11, respectively, further blocking the leakage of fluid, forming a double seal, and improving the reliability of the seal.

[0025] Example 4: This embodiment provides an easy-to-install flange connection plate, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0026] The first sealing ring 11 has a concave ring groove 13 at one end near the second sealing ring 12, and the second sealing ring 12 has a convex ring block 14 that matches the concave ring groove 13 at one end near the first sealing ring 11.

[0027] As can be seen from this embodiment, the first sealing ring 11 has a concave ring groove 13 at one end near the second sealing ring 12, and the second sealing ring 12 has a convex ring block 14 that matches the concave ring groove 13 at one end near the first sealing ring 11. Through the fitting structure, the relative displacement of the two sealing rings is prevented, thus avoiding sealing failure. At the same time, the sealing contact area is increased, further enhancing the sealing effect.

[0028] Example 5: This embodiment provides an easy-to-install flange connection plate, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0029] The outer circumferential surface of the annular block 3 is provided with a sliding annular groove 15, and the inner circumferential surface of the annular flange 4 is provided with a sliding protrusion 16 that matches the sliding annular groove 15.

[0030] As can be seen from this embodiment, the outer circumferential surface of the annular block 3 is provided with a sliding annular groove 15, which provides a stable rotation track for the sliding protrusion 16. At the same time, the axial displacement of the annular flange 4 is further restricted by the stepped groove structure. The groove wall surface can be chrome-plated to improve wear resistance. The inner circumferential surface of the annular flange 4 is integrally formed with a sliding protrusion 16 that matches the sliding annular groove 15, so as to realize the free rotation of the annular flange 4. There is no need to set additional limit rings, stops or other components, which simplifies the structure. Moreover, there is no need to move the pipeline during installation. Installation can be completed by rotating the annular flange 4 to align the connection hole of the annular flange 4 and the connection hole on the fastening ring 6, which improves the installation efficiency.

[0031] Example 6: This embodiment provides an easy-to-install flange connection plate, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0032] An abutment ring 17 is provided between the head of the eccentric bolt 9 and the fastening ring 6.

[0033] As can be seen from this embodiment, an abutment ring 17 is provided between the head of the eccentric bolt 9 and the fastening ring 6. The abutment ring 17 is made of a wear-resistant and elastic material (such as polytetrafluoroethylene or nylon 66). The abutment ring 17 avoids direct metal-to-metal contact between the head of the eccentric bolt 9 and the fastening ring 6, thus preventing wear between the two. At the same time, the elasticity of the material is used to compensate for the flatness error between the bolt head and the end face of the fastening ring, ensuring a tight fit and improving the fastening stability. In addition, the abutment ring 17 can reduce the frictional resistance when the head of the eccentric bolt 9 rotates.

[0034] Example 7: This embodiment provides an easy-to-install flange connection plate, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0035] A compression groove 18 is provided at the end of the first sealing ring 11 away from the second sealing ring 12.

[0036] As can be seen from this embodiment, the end of the first sealing ring 11 away from the second sealing ring 12 is provided with a compression groove 18. When under pressure, it can deform along the compression groove 18 and fit tightly against the inclined surface of the expanding part 5 and the outer wall of the first tube body 1. When the connecting assembly is tightened, the first sealing ring 11 is squeezed by the expanding part 5 and the second sealing ring 12. The compression groove 18 can provide elastic deformation space, so that the sealing ring deforms in the radial and axial directions, further improving the fit of the sealing surface. At the same time, the deformation can compensate for the errors generated during the production of the sealing assembly and ensure the reliability of the seal.

[0037] Example 8: This embodiment provides an easy-to-install flange connection plate, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] The guide part 8 is semi-cylindrical and is used to restrict the eccentric bolt 9 from rotating freely.

[0039] As can be seen from this embodiment, the guide part 8 is semi-cylindrical, which is used to restrict the eccentric bolt 9 from rotating freely and improve the stability of the structure.

[0040] Working principle: The annular flange 4 is inserted into the sliding annular groove 15 of the annular block 3 via the sliding protrusion 16, ensuring that the annular flange can rotate flexibly without axial movement. The second sealing ring 12 is fitted onto the outer wall of the first pipe body 1, with one end fitting against the end face of the annular block 3. The concave annular groove 13 of the first sealing ring 11 is aligned with the convex annular groove 14 of the second sealing ring 12 and fitted onto the outer wall of the first pipe body 1, ensuring a tight fit. The gradually expanding portion 5 of the second pipe body 2 is fitted onto the end of the first pipe body 1, so that the inner wall of the gradually expanding portion is flush with the first sealing ring 3. The outer wall of the sealing ring 11 is fitted, and the fastening ring 6 is opposite to the annular flange 4. The annular flange 4 is rotated so that the connecting holes 7 of the annular flange 4 and the fastening ring 6 are aligned one by one. The abutment ring 17 is fitted onto the shank of the eccentric bolt 9, and the bolt shank is passed through the aligned connecting hole 7 to ensure that the bolt head is embedded in the guide part 8. The nut 10 is screwed into the bolt shank, and all bolts are tightened evenly with a torque wrench to avoid uneven force. The water pressure test is conducted, and the pressure is maintained for 30 minutes to confirm that there is no leakage. The installation is then complete.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An easy-to-install flange connection plate, comprising a first pipe body (1) and a second pipe body (2), characterized in that, Also includes: An annular block (3) is fixedly connected to one end sidewall of the first tube body (1); Annular flange (4), the annular block (3) is connected to the outer side of the annular flange (4); A gradually expanding part (5) is provided on the second tube body (2) and sleeved on the first tube body (1); a fastening ring (6) is fixedly connected to the end of the gradually expanding part (5). A sealing assembly is provided between the expanding portion (5) and the annular block (3); A connecting assembly is provided between the fastening ring (6) and the annular flange (4).

2. The easy-to-install flange connection plate according to claim 1, characterized in that, The connecting assembly includes: connecting holes (7), both the annular flange (4) and the fastening ring (6) are provided with a plurality of connecting holes (7) around their circumference; and a guide part (8), the annular flange (4) is provided with a guide part (8) extending along the outside of the connecting holes (7). An eccentric bolt (9) has its shank passing through the connecting hole (7) on the annular flange (4) and the fastening ring (6), with its head abutting against the fastening ring (6). Nut (10), which is threaded to the shank of eccentric bolt (9).

3. The easy-to-install flange connection plate according to claim 2, characterized in that, The sealing assembly includes: The first sealing ring (11) is provided inside the gradually expanding part (5) and is sleeved on the outer wall of the first tube body (1); The second sealing ring (12) is also fitted on the outer wall of the first tube body (1). The two ends of the second sealing ring (12) abut against the annular block (3) and the first sealing ring (11) respectively.

4. The easy-to-install flange connection plate according to claim 3, characterized in that, The first sealing ring (11) has a concave ring groove (13) at one end near the second sealing ring (12), and the second sealing ring (12) has a convex ring block (14) that matches the concave ring groove (13) at one end near the first sealing ring (11).

5. The easily installable flange connection plate according to claim 1, characterized in that, The outer circumferential surface of the annular block (3) is provided with a sliding annular groove (15), and the inner circumferential surface of the annular flange (4) is provided with a sliding protrusion (16) that is compatible with the sliding annular groove (15).

6. The easily installable flange connection plate according to claim 4, characterized in that, An abutment ring (17) is provided between the head of the eccentric bolt (9) and the fastening ring (6).

7. The easily installable flange connection plate according to claim 4, characterized in that, The first sealing ring (11) has a compression groove (18) at the end away from the second sealing ring (12).

8. The easily installable flange connection plate according to claim 2, characterized in that, The guide part (8) is semi-cylindrical and is used to restrict the eccentric bolt (9) from rotating freely.

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