Flange connecting structure

Abstract

The utility model discloses a flange connecting structure which comprises a first flange plate and a second flange plate, the first flange plate and the second flange plate are coaxially arranged, the first flange plate comprises a first end face, the second flange plate comprises a second end face, and the first end face is attached to the second end face. The first flange plate is provided with a first lining, the first lining comprises an extending part, and the extending part penetrates through the first flange plate and extends out of the side, close to the second flange plate, of the first flange plate. The second flange plate is connected with a second lining, the second lining is provided with a groove, the second flange plate is provided with a convex ring, the convex ring is inserted into the groove, the inner wall of the convex ring is attached to the circumferential wall face of the groove, and the convex ring can rotate in the axial direction of the second lining. The groove is provided with a second wall face, the protruding ring is provided with a first wall face, and the second wall face and the first wall face abut against each other in the axial direction of the second flange plate. The extension part is in threaded connection with and inserted into the bushing II. The utility model provides a flange connection structure which is convenient for flange connection of pipelines in a narrow-distance state.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, and more specifically, to a flange connection structure. Background Technology

[0002] Currently, pipes are usually connected by flanges. During the construction and installation of a pipe, if the distance between the two pipes at the joint is too small, it will be difficult to fit the other flange into the pipe after one flange is fitted into the pipe, causing installation difficulties. A new solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a flange connection structure that facilitates flange connection in narrow pipe spacing.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a flange connection structure, including a flange one and a flange two, flange one and flange two being coaxially arranged, flange one including an end face one, flange two including an end face two, end face one and end face two being fitted together; flange one is fitted with a bushing one, bushing one including an extension portion, the extension portion passing through flange one and extending out of flange one near the side of flange two; flange two is connected to bushing two, bushing two having a groove, flange two having a convex ring, the convex ring being inserted into the groove, the inner wall of the convex ring being fitted with the circumferential wall of the groove, the convex ring being able to rotate along the axial direction of bushing two; the groove having a wall two, the convex ring having a wall one, the wall two and the wall one abutting each other along the axial direction of flange two; the extension portion is threadedly inserted into bushing two.

[0005] The present invention is further configured such that the extension portion is fitted with the flange with a clearance.

[0006] The present invention is further configured such that flange two is located on both sides of bushing two along the axial direction, and there are two flange two, which are spliced ​​together to form a ring structure.

[0007] The present invention is further configured such that flange two is provided with a connecting platform, and the connecting platforms of the two flange two are connected by bolts.

[0008] The present invention is further configured such that a bushing is threadedly connected to a tube body, and the tube body is inserted into the bushing.

[0009] The present invention is further configured such that the bushing is threadedly connected to the tube body, and the tube body is inserted into the bushing.

[0010] The present invention is further configured such that a gap is formed between the end face of the bushing two near the flange one and the end face one.

[0011] The present invention is further configured such that flange one includes a ring body, the ring body has an end face, and the ring body also has a limiting groove; flange two has an insert block, which is inserted into the limiting groove.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. By setting flange two and bushing two into a semi-circular ring connection structure, it is convenient to install flange two by fitting bushing two into the outer wall of pipe body two and installing flange two when the distance between pipe body one and pipe body two is too small, thus realizing the installation of flange with a small connection distance.

[0014] 2. The thread direction of pipe body one and bushing one is opposite to that of pipe body two and bushing two, so that after flange one, flange two, bushing one and bushing two are connected to each other, they are not easy to loosen in the axial direction. Attached Figure Description

[0015] Figure 1 A cross-sectional view of [the structure].

[0016] Figure 2 for Figure 1 A cross-sectional view along the MM direction.

[0017] Reference numerals in the attached drawings: Flange 1, Ring 11, End face 111, Limiting groove 112, Flange 2, Raised ring 21, Wall face 1211, Insert block 22, End face 223, Connecting platform 24, Bushing 1 3, Extension 31, Bushing 2 4, Groove 41, Wall face 2211, Pipe body 1 5, Pipe body 2 6. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 As shown, this embodiment discloses a flange connection structure, including a first flange 1 and a second flange 2. Both first flange 1 and second flange 2 are annular structures, and are coaxially arranged. First flange 1 includes a ring body 11 with an end face 111, and second flange 2 includes an end face 23, which fits against first end face 111. The ring body 11 and second flange 2 are connected by bolts. The ring body 11 also has a limiting groove 112, and second flange 2 has an insertion block 22 that inserts into the limiting groove 112 to facilitate bolt hole alignment.

[0020] like Figure 1As shown, flange 1 is fitted with bushing 3. Bushing 3 includes an extension 31, which extends to the right side along the right end of bushing 3. The extension 31 passes through flange 1 and extends out of flange 1 near flange 2. The extension 31 is clearance-fitted with flange 1, and bushing 3 is fastened to flange 1 with screws.

[0021] like Figure 1 As shown, bushing 3 is threadedly connected to pipe body 5, and pipe body 5 is inserted into bushing 3.

[0022] like Figure 1 As shown, flange 2 is connected to bushing 4, and flange 2 and bushing 4 are rotatably connected. Specifically, in combination with Figure 2 Bushing 2 4 is composed of two semi-circular rings joined together to form a circular structure. Flange 2 2 is located on both axial sides of bushing 2 4. There are two flanges 2 2, each with a connecting platform 24. The connecting platforms 24 of the two flanges 2 2 are connected by bolts. The two flanges 2 2 are joined together to form a circular structure and press against bushing 2 4. Bushing 2 4 has a groove 41, and flange 2 2 has a raised ring 21. The raised ring 21 protrudes radially inward along the inner wall of flange 2 2 to form a ring shape. The raised ring 21 is inserted into the groove 41, and the inner wall of the raised ring 21 fits against the circumferential wall of the groove 41. The raised ring 21 can rotate axially along bushing 2 4 to adjust its circumferential position to achieve the docking of flange 1 1 and flange 2 2.

[0023] The groove 41 is provided with a second wall surface 411, and the protruding ring 21 is provided with a first wall surface 211. The second wall surface 411 and the first wall surface 211 abut against each other along the axial direction of the second flange 2. After the first flange 1 and the second flange 2 are fixed together, the bushing 2 4 is prevented from detaching to the right along the axial direction.

[0024] like Figure 1 As shown, the extension 31 is threadedly connected to the bushing 2 4. During the processing of the bushing 2 4, the thread is first formed and then cut. The bushing 2 4 is threadedly connected to the pipe body 2 6. The pipe body 2 6 is inserted into the bushing 2 4. A gap is formed between the end face of the bushing 2 4 near the flange 1 and the end face 111.

[0025] The thread direction of pipe body 5 and bushing 3 is opposite to that of pipe body 6 and bushing 4, so that after flange 1, flange 2, bushing 3 and bushing 4 are connected to each other, they are not easy to loosen in the axial direction.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A flange connection structure characterized by, The flange plate one (1) is coaxially arranged with the flange plate two (2), the flange plate one (1) includes end face one (111), the flange plate two (2) includes end face two (23), the end face one (111) is attached with the end face two (23); The flange plate one (1) is provided with a bushing one (3), the bushing one (3) includes an extension (31), the extension (31) passes through the flange plate one (1), the extension (31) extends out of the flange plate one (1) near the flange plate two (2) side; The flange plate two (2) is connected with a bushing two (4), the bushing two (4) is provided with a groove (41), the flange plate two (2) is provided with a convex ring (21), the convex ring (21) is inserted into the groove (41), the inner wall of the convex ring (21) is attached with the circumferential wall of the groove (41), the convex ring (21) can rotate along the axial direction of the bushing two (4); The groove (41) is provided with a wall two (411), the convex ring (21) is provided with a wall one (211), the wall two (411) and the wall one (211) are mutually abutted along the axial direction of the flange plate two (2); The extension (31) is threadedly connected and inserted into the bushing two (4); The flange plate two (2) is located on both sides of the axial direction of the bushing two (4), the flange plate two (2) is provided with two, and the two flange plate two (2) is spliced to form a circular ring structure; The bushing two (4) is spliced to form a circular ring structure.

2. A flange joint structure according to claim 1, wherein The extension (31) and the flange plate one (1) are gap fitted.

3. The flange connection structure according to claim 1, wherein The flange plate two (2) is provided with a connecting table (24), and the connecting tables (24) of the two flange plate two (2) are connected by bolts.

4. The flange joint structure according to claim 1, wherein The bushing one (3) is threadedly connected with a pipe body one (5), and the pipe body one (5) is inserted into the bushing one (3).

5. The flange joint structure according to claim 1, wherein The bushing two (4) is threadedly connected with a pipe body two (6), and the pipe body two (6) is inserted into the bushing two (4).

6. The flange joint structure according to claim 1, wherein The end face of the bushing two (4) near the flange plate one (1) side and the end face one (111) form a spacing.

7. The flange joint structure according to claim 1, wherein The flange plate one (1) includes a ring body (11), the ring body (11) is provided with the end face one (111), the ring body (11) is further provided with a limiting groove (112), the flange plate two (2) is provided with an insertion block (22), and the insertion block (22) is inserted into the limiting groove (112).

Images