Machining type connector convenient to install and good in sealing performance

Abstract

The utility model discloses a machining type connector convenient to install and good in sealing performance, and relates to the technical field of connectors. The machining type connector convenient to install and good in sealing performance comprises a first flange head and a second flange head, a butt joint ring is fixedly connected to the surface of the side, close to the first flange head, of the second flange head, and the outer surface of the butt joint ring is attached to the inner ring of the first flange head; four positioning columns are fixedly connected to the surface of the side, facing the first flange head, of the second flange head, four positioning holes are formed in the surface of the side, close to the second flange head, of the first flange head, an annular cavity is formed in the first flange head, and an annular sealing groove is formed in the outer surface of the butt joint ring. An annular extending groove communicated with the interior of the annular cavity is formed in the inner ring of the first flange head, the problem that fluid leaks when passing through a gap between the butt joint ring and the first flange head is avoided as much as possible, meanwhile, the connecting strength between the first flange head and the second flange head is improved through the arc-shaped sealing blocks, and the using effect of the connector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of joints, in particular to a machined joint that is easy to install and has good sealing performance. Background Art

[0002] Machined joints are a widely used connection method in mechanical devices. They refer to the joint structure between two parts connected by mechanical means. There are many types of mechanical connection joints, the most common of which are threaded connection, flange connection, clamp connection and sleeve connection.

[0003] The existing flange joints are generally widely used in fluid transportation. The existing flange joints are generally divided into two, which are butt-jointed by the two flange joints and then fixed together by bolts. At the same time, in order to avoid leakage between the two flange joints, a sealing ring is generally provided between the two flange joints. However, after long-term use of the existing flange joints, the sealing ring does not have good sealing performance, which leads to the problem of fluid leakage through the flange joint when the flange joint is in use, affecting the use effect of the existing flange joint. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a machined joint which is easy to install and has good sealing performance, and can solve the problem that the sealing ring does not have good sealing performance, thus causing fluid leakage through the flange joint when the flange joint is in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a machine-made joint with good sealing performance is easy to install, including a first flange head and a second flange head, a docking ring is fixedly connected to a side surface of the second flange head close to the first flange head, the outer surface of the docking ring is fitted with the inner ring of the first flange head, and four positioning columns are fixedly connected to a side surface of the second flange head facing the first flange head, four positioning holes are provided on a side surface of the first flange head close to the second flange head, an annular cavity is provided in the first flange head, an annular sealing groove is provided on the outer surface of the docking ring, an annular extension groove connected to the inside of the annular cavity is provided on the inner ring of the first flange head, four arc-shaped sealing blocks are provided in the annular cavity, the four arc-shaped sealing blocks are arranged in a circular array in the annular cavity, and one side of the four arc-shaped sealing blocks close to the center of the first flange head extends into the annular sealing groove through the annular extension groove and matches the annular sealing groove, and the arc-shaped sealing blocks slide in the annular extension groove.

[0006] Preferably, the four positioning posts are arranged in a circular array on the second flange head with the docking ring as the center, the four positioning holes are respectively matched with the four positioning posts, and the inner ring of the docking ring is aligned with the inner wall of the through hole of the second flange head.

[0007] Preferably, the arc-shaped sealing block is fixedly connected to an arc-shaped connecting block on an outer surface of one side located in the annular cavity, a sliding cavity is opened in the arc-shaped connecting block, a support rod is fixedly connected to the inner wall of the annular cavity facing the arc-shaped connecting block, the other end of the support rod slides into the sliding cavity, one end of the support rod located in the sliding cavity is fixedly connected to a limiting plate, a spring is fixedly connected between the limiting plate and the inner wall of the sliding cavity, and the spring is movably sleeved on the outer surface of the support rod.

[0008] Preferably, a support plate is fixedly connected to the inner wall of the annular cavity on one side close to the arc-shaped connecting block, and a pressure plate is rotatably connected to the side of the support plate. One side of the pressure plate is arranged on the upper side of the arc-shaped connecting block and contacts it. A pushing block is provided on the inner wall of the annular cavity on one side close to the positioning hole. The shape of the pushing block is a right-angled trapezoid. The other side of the pressure plate contacts the inclined surface of the pushing block. The positioning hole is connected to the annular cavity, and the other end of the positioning column extends into the annular cavity and contacts the vertical surface of the pushing block.

[0009] Preferably, a limiting groove is provided on the inner wall of the annular cavity close to the pushing block, and the vertical cross-section of the limiting groove is T-shaped. A limiting slider is fixedly connected to the surface of the pushing block close to the limiting groove, and the limiting slider slides in the limiting groove and adapts to the inner wall of the limiting groove.

[0010] Preferably, the support plate is arranged on a side of the pressure plate away from the arc-shaped connecting block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] This machined joint, which is easy to install and has good sealing performance, can automatically seal the docking ring after the first flange head and the second flange head are installed. A new sealing structure is added on the basis of the existing rubber ring seal, thereby improving the sealing performance between the docking ring and the first flange head and avoiding the problem of fluid leakage through the gap between the docking ring and the first flange head as much as possible. At the same time, the arc-shaped sealing block also increases the connection strength between the first flange head and the second flange head. At the same time, no additional operating steps are required, thereby further improving the use effect of the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 This is a schematic diagram of the structure of the utility model, which is convenient for installing a machined joint with good sealing performance;

[0015] Figure 2 This is a schematic diagram of the structure of the second flange head of the utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the first flange head of the utility model;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0018] Figure 5 It is a side plan view of the pushing block of the utility model.

[0019] Figure numerals: 1. first flange head; 2. second flange head; 3. docking ring; 4. positioning column; 5. positioning hole; 6. annular cavity; 7. annular sealing groove; 8. annular extension groove; 9. arc-shaped sealing block; 10. arc-shaped connecting block; 11. support rod; 12. sliding cavity; 13. limiting plate; 14. spring; 15. support plate; 16. pressure plate; 17. pushing block; 18. limiting slider; 19. limiting slide groove. DETAILED DESCRIPTION

[0020] See also Figure 1-5 The utility model provides a technical solution: it is easy to install a machined joint with good sealing performance, including a first flange head 1 and a second flange head 2, a docking ring 3 is fixedly connected to the surface of the second flange head 2 on one side close to the first flange head 1, and the inner ring of the docking ring 3 is aligned with the inner wall of the through hole of the second flange head 2, and the outer surface of the docking ring 3 is in contact with the inner ring of the first flange head 1, and four positioning columns 4 are fixedly connected to the surface of the second flange head 2 on the side facing the first flange head 1, and the four positioning columns 4 are arranged on the second flange head 2 in a circular array with the docking ring 3 as the center, and four positioning holes 5 are opened on the surface of the first flange head 1 on one side close to the second flange head 2, and the four positioning holes 5 are respectively adapted to the four positioning columns 4;

[0021] Therefore, when in use, the first flange head 1 is connected with the second flange head 2, the docking ring 3 extends into the first flange head 1 and fits with the inner ring of the first flange head 1, and the four positioning columns 4 respectively extend into the four positioning holes 5, thereby completing the positioning effect of the machined joint when connected, so that the screw holes on the first flange head 1 and the second flange head 2 are easy to align, and the positioning columns 4 on the first flange head 1 and the second flange head 2 also have a supporting effect when installing bolts, and there is no need for another staff member to lift the connected flange.

[0022] Specifically, an annular cavity 6 is provided in the first flange head 1, an annular sealing groove 7 is provided on the outer surface of the docking ring 3, an annular extension groove 8 communicating with the inside of the annular cavity 6 is provided on the inner ring of the first flange head 1, and the annular extension groove 8 and the annular sealing groove 7 are at the same vertical position, four arcuate sealing blocks 9 are provided in the annular cavity 6, the arcuate sealing blocks 9 are made of rubber material, and the four arcuate sealing blocks 9 are arranged in the annular cavity 6 in a circular array, and the four arcuate sealing blocks 9 close to the center of the first flange head 1 are extended to the annular sealing groove 7 through the annular extension groove 8, and are consistent with the annular sealing groove 7, and the arcuate sealing blocks 9 slide in the annular extension groove 8;

[0023] When the docking ring 3 is fully extended into the first flange head 1, the four arcuate sealing blocks 9 are controlled to move toward one side of the center so that the four arcuate sealing blocks 9 are moved into the annular sealing groove 7 through the annular extension groove 8. In this way, the four arcuate sealing blocks 9 are combined into a circular ring shape, and the inner side of the annular body is consistent with the annular sealing groove 7. This method further improves the sealing between the docking ring 3 and the first flange head 1, and avoids the problem of fluid leakage through the gap between the docking ring 3 and the first flange head 1 as much as possible. At the same time, the arcuate sealing block 9 also increases the connection strength between the first flange head 1 and the second flange head 2.

[0024] Specifically, an arc-shaped sealing block 9 is fixedly connected to an outer surface of one side of the annular cavity 6, a sliding cavity 12 is opened in the arc-shaped connecting block 10, a support rod 11 is fixedly connected to the inner wall of the annular cavity 6 facing the arc-shaped connecting block 10, the other end of the support rod 11 slides through the sliding cavity 12, one end of the support rod 11 located in the sliding cavity 12 is fixedly connected to a limiting plate 13, a spring 14 is fixedly connected between the limiting plate 13 and the inner wall of the sliding cavity 12, the spring 14 is movably sleeved on the outer surface of the support rod 11, when the spring 14 is not squeezed, the spring 14 will form a thrust on the arc-shaped connecting block 10, so that the arc-shaped connecting block 10 is away from the side of the docking ring 3, and the arc-shaped sealing block 9 is retracted into the annular extension groove 8, so that when the docking ring 3 is installed into the first flange head 1, the arc-shaped sealing block 9 will not affect the installation of the docking ring 3.

[0025] Specifically, a support plate 15 is fixedly connected to the inner wall of the annular cavity 6 on one side close to the arc-shaped connecting block 10, and a pressure plate 16 is rotatably connected to the side of the support plate 15. One side of the pressure plate 16 is arranged on the upper side of the arc-shaped connecting block 10 and contacts it. A push block 17 is arranged on the inner wall of the annular cavity 6 on one side close to the positioning hole 5. The shape of the push block 17 is a right-angled trapezoid. The other side of the pressure plate 16 contacts the inclined surface of the push block 17. The positioning hole 5 is connected to the annular cavity 6. The other end of the positioning column 4 extends into the annular cavity 6 and contacts the vertical surface of the push block 17.

[0026] When the arc sealing block 9 is retracted into the annular extension groove 8, the arc connecting block 10 will form a thrust on the pressure plate 16, so that the other side of the pressure plate 16 is tilted downward, so that the initial position of the pushing block 17 is close to one side of the positioning hole 5. When the first flange head 1 and the second flange head 2 are docked, the positioning column 4 is displaced into the annular cavity 6 through the positioning hole 5. The positioning column 4 will form a thrust on the pushing block 17, so that the pushing block 17 is displaced to the side close to the annular connecting block 10. The inclined surface of the pushing block 17 will squeeze the pressure plate 16, so that the pressure plate 16 rotates counterclockwise with the support plate 15 as the rotation point. Therefore, the pressure plate 16 forms a thrust on the arc connecting block 10, pushing the arc connecting block 10 to displace to one side of the docking ring 3. At this time, the arc sealing block 9 can be displaced into the annular sealing groove 7 to complete the sealing of the positioning column 4. The above structure can automatically seal the docking ring 3 after the first flange head 1 and the second flange head 2 are installed, without the need for additional operating steps, thereby further improving the use effect of the joint.

[0027] In this embodiment, the support plate 15 is arranged on the side of the pressure plate 16 away from the arc-shaped connecting block 10, so that the force arm on the side of the pressure plate 16 close to the arc-shaped connecting block 10 is longer. According to the principle of Archimedean lever, the pushing block 17 only needs to move a short distance, and the pressure plate 16 can be rotated at a large angle, so the distance that the pressure plate 16 pushes the arc-shaped connecting block 10 can be guaranteed. The arrangement in this way can avoid the problem that the annular sealing groove 7 has not moved to the position yet and the arc-shaped sealing block 9 moves downward, resulting in jamming. At the same time, the arc-shaped sealing block 9 in this embodiment is made of rubber material and has a certain compressibility, so that the arc-shaped sealing block 9 can be compressed a certain distance when squeezed.

[0028] Specifically, a limiting groove 19 is provided on the inner wall of the annular cavity 6 on one side close to the push block 17, and the vertical section of the limiting groove 19 is T-shaped. A limiting slider 18 is fixedly connected to the surface of the push block 17 on one side close to the limiting groove 19. The limiting slider 18 slides in the limiting groove 19 and adapts to the inner wall of the limiting groove 19. In this way, the limiting slider 18 forms a limiting effect on the push block 17, so that the push block 17 can only be displaced in the horizontal direction.

[0029] Working principle: When the device is used, the first flange head 1 is connected to the second flange head 2, the docking ring 3 extends into the first flange head 1 and fits with the inner ring of the first flange head 1, and at the same time, the four positioning columns 4 extend into the four positioning holes 5 respectively, and one end of the positioning column 4 that moves into the positioning hole 5 can be moved into the annular cavity 6, and the positioning column 4 will form a thrust on the push block 17, so that the push block 17 moves toward the side close to the annular connecting block 10, and the inclined surface of the push block 17 will squeeze the pressure plate 16, so that the pressure plate 16 rotates counterclockwise with the support plate 15 as the rotation point. Therefore, the pressure plate 16 forms a thrust on the arc-shaped connecting block 10, pushing the arc-shaped connecting block 10 to move toward one side of the docking ring 3, and at this time, the arc-shaped sealing block 9 can be moved into the annular sealing groove 7 to complete the sealing of the positioning column 4.

Claims

1. A machined joint with good sealing performance and convenient installation, comprising a first flange head (1) and a second flange head (2), characterized in that: A docking ring (3) is fixedly connected to a surface of the second flange head (2) on a side close to the first flange head (1); the outer surface of the docking ring (3) is in contact with the inner ring of the first flange head (1); four positioning columns (4) are fixedly connected to a surface of the second flange head (2) on a side facing the first flange head (1); four positioning holes (5) are provided on a surface of the first flange head (1) on a side close to the second flange head (2); an annular cavity (6) is provided in the first flange head (1); and an annular cavity (6) is provided on the outer surface of the docking ring (3). The first flange head (1) has an annular sealing groove (7), an annular extension groove (8) communicating with the interior of the annular cavity (6) is formed on the inner ring of the first flange head (1), four arc-shaped sealing blocks (9) are arranged in the annular cavity (6), and the four arc-shaped sealing blocks (9) are arranged in a circular array in the annular cavity (6), and one side of the four arc-shaped sealing blocks (9) close to the center of the first flange head (1) extends into the annular sealing groove (7) through the annular extension groove (8) and matches the annular sealing groove (7), and the arc-shaped sealing blocks (9) slide in the annular extension groove (8).

2. The machined joint with good sealing performance and easy installation according to claim 1, characterized in that: The four positioning posts (4) are arranged in a circular array on the second flange head (2) with the docking ring (3) as the center, the four positioning holes (5) are respectively matched with the four positioning posts (4), and the inner ring of the docking ring (3) is aligned with the inner wall of the through hole of the second flange head (2).

3. The machined joint with good sealing performance and easy installation according to claim 1, characterized in that: The arc-shaped sealing block (9) is fixedly connected to an arc-shaped connecting block (10) on one side of the outer surface located in the annular cavity (6); a sliding cavity (12) is provided in the arc-shaped connecting block (10); a support rod (11) is fixedly connected to the inner wall of the annular cavity (6) facing the arc-shaped connecting block (10); the other end of the support rod (11) slides into the sliding cavity (12); one end of the support rod (11) located in the sliding cavity (12) is fixedly connected to a limiting plate (13); a spring (14) is fixedly connected between the limiting plate (13) and the inner wall of the sliding cavity (12); the spring (14) is movably sleeved on the outer surface of the support rod (11).

4. The machined joint with good sealing performance and easy installation according to claim 3 is characterized in that: A support plate (15) is fixedly connected to the inner wall of the annular cavity (6) on one side close to the arc-shaped connecting block (10), and a pressure plate (16) is rotatably connected to the side of the support plate (15). One side of the pressure plate (16) is arranged on the upper side of the arc-shaped connecting block (10) and contacts the inner wall of the annular cavity (6) on one side close to the positioning hole (5). The shape of the push block (17) is a right-angled trapezoid. The other side of the pressure plate (16) contacts the inclined surface of the push block (17). The positioning hole (5) is connected to the annular cavity (6), and the other end of the positioning column (4) extends into the annular cavity (6) and contacts the vertical surface of the push block (17).

5. The machined joint with good sealing performance and easy installation according to claim 4, characterized in that: A limiting slide groove (19) is provided on the inner wall of the annular cavity (6) close to the push block (17); the vertical cross section of the limiting slide groove (19) is T-shaped; a limiting slider (18) is fixedly connected to the surface of the side of the push block (17) close to the limiting slide groove (19); the limiting slider (18) slides in the limiting slide groove (19) and is adapted to the inner wall of the limiting slide groove (19).

6. The machined joint with good sealing performance and easy installation according to claim 4, characterized in that: The support plate (15) is arranged on a side of the pressing plate (16) away from the arc-shaped connecting block (10).

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