CN114593288A - Flange connection structure - Google Patents

Abstract

The invention discloses a flange connection structure, comprising two connecting members respectively used for being arranged at the ends of two pipelines to be connected, the two connecting members have the same size and structure, and the connecting members are integral It is cylindrical, and the axial position of the connecting member is provided with a connecting pipe. The connecting pipe is used for communicating with the pipeline. The axial ends of the connecting pipe are respectively provided with a first annular part and a second annular part. The connecting pipes are opposite A space is provided in the axial middle position of the first annular member and the second annular member, one side of the first annular member has a flat mating surface, and the mating surface of the first annular member is evenly distributed along the axis circumferential direction. A mounting hole communicated with the gap, and the second annular member is used for fitting and fixing with the pipeline. The invention has the advantages of simple structure, reliable connection, convenient installation and beautiful appearance.

Description

Flange connection structure

technical field

The invention relates to a flange connection structure.

Background technique

At present, in the prior art, the two pipelines are generally connected by flanges at the ends of the pipelines, and the flanges at the ends of the two pipelines are connected and fixed by bolts to ensure the connection between the two pipelines. reliable and stable connection. However, since the flanges are generally annularly protruding relative to the outside of the pipeline, they are not visually appealing, and are prone to interference or collision with other objects.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a flange connection structure with beautiful appearance and stronger integration.

In order to achieve the above object, the present invention provides a flange connection structure, which includes two connecting members respectively used to be arranged at the ends of two pipelines to be connected, and the two connecting members have the same size and structure, The connecting member is cylindrical as a whole, and a connecting pipe is arranged at the axial center of the connecting member. The connecting pipe is used for communicating with the pipeline. The axial ends of the connecting pipe are respectively provided with a first annular part and a second annular part. The connecting pipe is provided with a gap relative to the middle position of the first annular part and the second annular part in the axial direction, one side of the first annular part has a flat mating surface, and the mating surface of the first annular part is along the axis. A plurality of mounting holes communicated with the gaps are uniformly distributed in the circumferential direction, and the second annular member is used for fitting, connection and fixing with the pipeline.

Further, the connecting member includes a plurality of connecting plates uniformly distributed along the circumferential direction of the connecting pipe, the plurality of connecting plates divide the gap into a plurality of chambers, and the plurality of mounting holes are in one-to-one communication with the plurality of chambers, The inner edges of the plurality of connecting plates are connected with the outer peripheral surface of the connecting pipe, and the plurality of connecting plates are connected with the first annular part and the second annular part at the same time.

Further, the present invention includes a surrounding retaining ring arranged between the two connecting members, the retaining ring is fixedly installed in the middle position between the second annular parts of the two connecting members, and is used for connecting the two connecting members. cover the gaps.

Further, the second annular member has a first annular support portion and a second annular support portion that are axially adjacent to each other, the outer diameter of the first annular support portion is the same as the outer diameter of the first annular member, and the second annular support The outer diameter of the first annular support part is larger than that of the first annular support part, so that a stepped groove is formed between the first annular support part and the second annular support part, which is fitted with the side edge of the retaining ring.

Further, a connecting seat is integrally formed on the outer edge of at least one of the connecting plates, and the connecting seat is provided with a connecting hole.

Further, the outer edge of the connecting plate, the outer circumferential wall of the first annular member, and the outer circumferential wall of the first annular support portion are on the same circumferential surface.

Further, the second annular component includes a notch for cooperating with the end of the pipeline for insertion and positioning, and the bottom of the notch includes a plurality of holes and grooves that are uniformly distributed along the circumferential direction and communicate with the gap. An annular component is connected by bolts pierced through its mounting holes, and a gap for fluid to pass through is left between the mounting holes and the bolts.

Further, a positioning protrusion and a positioning groove are provided on the mating surface of the first annular part, and the positioning protrusion and the positioning groove on the mating surface of the first annular part of the two connecting members are matched for insertion and positioning.

The beneficial effect of the present invention is that: the two connecting members of the present invention are respectively arranged at the ends of the two pipelines to be connected, and the connection between the two pipelines can be conveniently connected through the connection and cooperation of the two connecting members. Conduction is not only simple in structure and convenient in installation, but also can ensure that the connection between the two pipelines and the outer diameter of the pipe are in an approximately flush state, with beautiful appearance, and it is not easy to interfere or collide with other objects.

Description of drawings

Fig. 1 is the connection schematic diagram of two connection members of the embodiment of the present invention;

FIG. 2 is a schematic structural diagram 1 of a connecting member according to an embodiment of the present invention;

3 is a schematic structural diagram 2 of a connecting member according to an embodiment of the present invention;

4 is a schematic cross-sectional view of a connecting member according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of the entire embodiment of the present invention.

Detailed ways

The embodiment of the flange connection structure of the present invention is shown in Figures 1-5: it includes two connecting members 1 respectively used to be arranged at the ends of the two pipelines to be connected, and the two connecting members 1 have the same size and The structure simplifies the complexity of the manufacturing process and facilitates mass production. A connecting pipe 11 is provided at the position. The connecting pipe 11 is used for communicating with the pipeline. The connecting pipe 11 is for fluid to pass through. The axial ends of the connecting pipe 11 are respectively provided with a first annular part 12 and a second annular part 13 , the connecting pipe 11 is provided with a gap 10 relative to the middle position of the first annular member 12 and the second annular member 13 in the axial direction. One side of the first annular member 12 has a flat mating surface 121. A plurality of mounting holes 120 communicating with the gap 10 are evenly distributed on the mating surface 121 along the circumference of the shaft center. At the same time, they are locked and fixed by bolts passing through the mounting holes 120 of the first annular parts 12 of the two connecting members 1, so that the two first connecting members 1 can be easily fastened. Connection, and the bolt is hidden in the gap 10, the aesthetics can be improved. The second annular member 13 is used for fitting and fixing with the pipeline. The two pipelines connected by the present invention do not appear abrupt at the connection, the sense of unity is stronger, and it is not easy to interfere and collide with other objects, which can prevent accidental injury to persons.

The connecting member 1 includes a plurality of connecting plates 14 uniformly distributed along the circumferential direction of the connecting pipe 11 . The plurality of connecting plates 14 divide the gap 10 into a plurality of chambers, and the plurality of mounting holes 120 correspond to the plurality of chambers one-to-one. The chamber can be used to accommodate the ends of the bolts, the inner edges of the plurality of connecting plates 14 are integrally connected with the outer peripheral surface of the connecting pipe 11, and the plurality of connecting plates 14 are simultaneously connected with the first annular member 12, the second The two ring members 13 are connected. The connecting plate 14 has the function of supporting and processing the overall structure of the connecting member 1 and improving its strength and reliability.

This embodiment also includes a surrounding retaining ring 2 disposed between the two connecting members 1, the retaining ring 2 is fixedly installed in the middle position between the second annular parts 13 of the two connecting members 1, and is used for The gap between the two connecting members 1 can be covered, and the bolts in the gap can also be covered, so as to improve the overall aesthetics and integrity.

The second annular member 13 has a first annular support portion 131 and a second annular support portion 132 that are axially adjacent to each other. The outer diameter of the first annular support portion 131 is the same as the outer diameter of the first annular member 12. The outer diameter of the annular support portion 132 is larger than that of the first annular support portion 131, so that a stepped groove 130 is formed between the first annular support portion 131 and the second annular support portion 132, which is fitted with the side edge of the retaining ring 2. When the two connecting members 1 are axially connected, an annular shallow groove is formed spaced between the two second annular support portions 132 for the retaining ring 2 to be embedded therein for fixing, so that the retaining ring 2 can be placed in the The outer peripheral surfaces of an annular support portion 131 are flush with each other, thereby improving aesthetics and integrity. The stepped groove 130 cooperates with the side edge of the retaining ring 2 to be embedded and limited, so as to improve the fixing stability of the retaining ring 2 .

The outer edge of at least one of the connecting plates 14 is integrally formed with a connecting seat 141 , and the connecting seat 141 is provided with a connecting hole 142 . The bolt passing between the retaining ring 2 and the connecting hole 142 can be connected to the retaining ring 2 and the two connecting holes 142 . A relatively reliable supporting and fixing effect is formed between the connecting members 1 .

The outer edge of the connecting plate 14, the outer circumferential wall of the first annular member 12, and the outer circumferential wall of the first annular support portion 131 are on the same circumferential surface, which makes the outer edge of the connecting plate 14, the first annular member 12 The outer circumferential wall of the first annular support portion 131 can form a better contact support effect for the inner circumferential wall of the retaining ring 2, thereby further improving the reliability of the retaining ring 2 during installation.

The second annular member 13 includes a notch 133 for cooperating with the end of the pipeline, and the end of the pipeline can be fixed to the second annular member 13 by screwing or welding.

In this embodiment, the bottom of the notch 133 includes a plurality of holes 134 which are uniformly distributed along the circumferential direction and communicate with the gap 10 . For connection, there is a gap for the fluid to pass between the mounting hole 120 and the bolt. With this structural design, the fluid in the pipeline can not only flow through the inner hole of the connecting pipe 11, but also along the hole groove 134, the gap 10, The gaps between the mounting holes 120 and the bolts flow through, and the flow rate of the fluid can be increased. In addition, the arrangement of the holes 134 can also save materials, reduce the manufacturing cost, and can also make the product lighter.

In other embodiments, the bottom of the notch 133 can also adopt a closed structure. When the fluid in the pipeline is blocked by the second annular member 13 , it can only flow through the inner hole of the connecting pipe 11 .

A positioning protrusion 31 and a positioning groove 32 are provided on the matching surface 121 of the first annular part 12 , and the positioning protrusion 31 and the positioning groove 32 on the matching surface 121 of the first annular part 12 of the two connecting members 1 are provided. With the insertion and positioning, such a structural design is adopted, so that the positioning protrusions 31 of the two connecting members 1 and the positioning grooves 32 are matched, and the installation holes 120 of the two connecting members 1 can be conveniently aligned, which is convenient for installation. .

The above embodiment is only one of the preferred specific embodiments of the present invention, and the usual changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are included in the protection scope of the present invention.

Claims (8)

1. A flange connection structure is characterized in that: it comprises two connecting members respectively used to be arranged at the ends of two pipelines to be connected, and the two connecting members have the same size and structure, and the connection The member is cylindrical as a whole, and a connecting pipe is arranged at the axial center of the connecting member. The connecting pipe is used to cooperate and communicate with the pipeline. The axial ends of the connecting pipe are respectively provided with a first annular part and a second annular part. The tube is provided with a gap relative to the middle position of the first annular member and the second annular member along the axial direction, one side of the first annular member has a flat mating surface, and the mating surface of the first annular member is evenly distributed along the circumferential direction of the axis There are a plurality of installation holes communicated with the gap, and the second annular member is used for fitting and fixing with the pipeline. 2 . The flange connection structure according to claim 1 , wherein the connecting member comprises a plurality of connecting plates uniformly distributed along the circumferential direction of the connecting pipe, and the plurality of connecting plates divide the gap into a plurality of chambers, 3 . The plurality of mounting holes are in one-to-one correspondence with the plurality of chambers, the inner edges of the plurality of connecting plates are connected with the outer peripheral surface of the connecting pipe, and the plurality of connecting plates are simultaneously connected with the first annular member and the second annular member. 3. The flange connection structure according to claim 2, characterized in that it comprises a surrounding retaining ring arranged between the two connecting members, and the retaining ring is fixedly mounted on the second annular part of the two connecting members The middle position between the two connecting members is used to cover the gap. 4. The flange connection structure according to claim 3, wherein the second annular member has a first annular support portion and a second annular support portion axially adjacent to each other, and the outer diameter of the first annular support portion is The outer diameter of the second annular support part is the same as that of the first annular part, and the outer diameter of the second annular support part is larger than that of the first annular support part, so that a side edge of the retaining ring is formed between the first annular support part and the second annular support part. Built-in stepped groove. 5 . The flange connection structure according to claim 3 , wherein a connecting seat is integrally formed on the outer edge of at least one of the connecting plates, and the connecting seat is provided with a connecting hole. 6 . 6. The flange connection structure according to claim 5, wherein the outer edge of the connecting plate, the outer circumferential wall of the first annular member, and the outer circumferential wall of the first annular support portion are on the same circumferential surface . 7 . The flange connection structure according to claim 3 , wherein the second annular member includes a notch for cooperating with the end of the pipeline for insertion and positioning, and the bottom of the notch includes a plurality of A hole and groove communicated with the gap, the first annular parts of the two connecting members are connected by bolts pierced through their mounting holes, and a gap for fluid to pass through is left between the mounting holes and the bolts. 8 . The flange connection structure according to claim 1 , wherein a positioning protrusion and a positioning groove are provided on the mating surface of the first annular part, and the mating surface of the first annular part of the two connecting members is provided with a positioning protrusion and a positioning groove. 9 . The positioning protrusions and positioning grooves on the socket are matched with the plug-in positioning.

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