Sealed compensation joint

Abstract

The utility model discloses a sealed compensation joint which comprises an outer cylinder, an inner cylinder, a first flange and a second flange, wherein the inner cylinder is nested and attached in the outer cylinder; the first flange and the second flange are fixedly connected with the upper surface of the outer cylinder and the lower surface of the inner cylinder respectively; the adjustable connecting structure is arranged between the first flange and the second flange, the adjustable connecting structure comprises a fixed rod, a limiting sleeve, a connecting rod and a movable sleeve, and the fixed rod is fixedly connected to the lower side of the front end and the lower sides of the left end and the right end of the first flange; a compressible structure is arranged on the inner side of the inner cylinder, and the compressible structure comprises a compressed sponge and a shrink film; and sealing structures are arranged on the outer cylinder, the inner cylinder, the first flange and the second flange. According to the sealing type compensation connector, the overall length of the compensation connector can be conveniently adjusted so as to meet the connection work of different lengths, pressure compensation can be conveniently conducted on an introduced medium, the situation that the service life is affected due to overpressure is avoided, and the sealing effect of the compensation connector can be conveniently achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of compensating joints, in particular to a sealed compensating joint. Background Technique

[0002] The pipe force transmission compensating joint is one of the important components in pipe connection. Its function is to compensate for the thermal expansion and contraction of the pipeline to maintain the stability and reliability of the pipeline system. Generally, the compensating joint is composed of a compensator, a connecting piece and a sealing piece.

[0003] For example, the Chinese utility model patent with the authorization publication number CN214618371U discloses a spherical compensating joint, which includes a spherical shell and a sphere. One end of the sphere is inserted into the spherical shell. The utility model overcomes the deficiencies of the prior art and solves the problem that the existing spherical compensating joint is connected by bolts and has low maintenance efficiency. By setting a threaded structure to connect the spherical shell and the gland, the structure is simple, the disassembly and assembly time is saved, and the maintenance efficiency is improved. By connecting the sealing ring and the gland in a wedge shape, when the gland is installed, the extension end can be pushed to squeeze obliquely downward to the sealing ring to provide a pre-tightening force, and there is no need to additionally increase the sealing strip, enhancing the sealing effect. One end of the nut can be embedded in the first groove to form a protective shell, and the screw barrel is not easily damaged. By setting a bearing, the screw barrel and the gland can rotate relative to each other, which does not affect the connection of the threaded structure. The connection between the screw barrel and the stud in the groove is beautiful as a whole. The utility model has a simple structure, a reasonable overall connection and high practicability.

[0004] However, for the existing compensating joints, during use, it is generally not convenient to adjust the overall length of the compensating joint, it is difficult to meet the connection work of different lengths, it is not convenient to perform pressure compensation on the introduced medium, there is a problem that the service life is affected due to overpressure, and the sealing effect is limited. Therefore, we propose a sealed compensating joint to solve the problems mentioned above. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sealed compensating joint to solve the problems mentioned in the above background technique, that is, for the existing compensating joints, during use, it is generally not convenient to adjust the overall length of the compensating joint, it is difficult to meet the connection work of different lengths, it is not convenient to perform pressure compensation on the introduced medium, there is a problem that the service life is affected due to overpressure, and the sealing effect is limited.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A sealed compensating joint, comprising: an outer cylinder, an inner cylinder nested and fitted inside the outer cylinder, and a first flange and a second flange fixedly connected to the upper surface of the outer cylinder and the lower surface of the inner cylinder respectively;

[0007] It further includes:

[0008] An adjustable connection structure is provided between the first flange and the second flange. The adjustable connection structure includes a fixed rod, a limit sleeve, a connecting rod, and a movable sleeve. The fixed rod is fixedly connected to the lower side of the front end and the lower sides of the left and right ends of the first flange.

[0009] A compressible structure is provided inside the inner cylinder. The compressible structure includes a compression sponge and a shrink film. The compression sponge is attached to the inner side of the middle part of the inner cylinder.

[0010] A sealing structure is provided on the outer cylinder, the inner cylinder, the first flange, and the second flange. The sealing structure includes a first sealing gasket, a second sealing gasket, a third sealing gasket, and a fourth sealing gasket. The first sealing gasket and the second sealing gasket are respectively fixed to the upper surface of the inner cylinder and the lower surface of the outer cylinder.

[0011] Preferably, the lower end of the fixed rod is non-removably connected with a limit sleeve in a snap-fit manner, and the limit sleeve is fixedly connected to the front end and the upper surfaces of the left and right ends of the second flange.

[0012] Preferably, connecting rods are fixedly connected to the lower side of the rear end of the first flange and the upper side of the rear end of the second flange. The connecting rods are symmetrically arranged as single units, and movable sleeves are threadedly connected to the outer sides of the inner ends of the connecting rod single units.

[0013] Preferably, a shrink film is nested and attached to the outside of the compression sponge, and the shrink film is fixedly connected to the inner cylinder by adhesion. The front views of the compression sponge and the shrink film are respectively in a semi-circular structure and a "C"-shaped structure.

[0014] Preferably, the inner and outer diameter dimensions of the first sealing gasket are the same as those of the inner cylinder, and the outside of the first sealing gasket is tightly attached to the outer cylinder.

[0015] Preferably, the inner and outer diameter dimensions of the second sealing gasket are the same as those of the outer cylinder, and the inside of the second sealing gasket is tightly attached to the inner cylinder.

[0016] Preferably, a third sealing gasket and a fourth sealing gasket are respectively attached to the upper surface of the first flange and the lower surface of the second flange. The inner diameter dimensions of the third sealing gasket and the fourth sealing gasket are respectively the same as the inner diameter dimensions of the first flange and the second flange.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: This sealed compensating joint facilitates adjusting the overall length of the compensating joint to meet connection work of different lengths, facilitates pressure compensation for the introduced medium, avoids affecting the service life due to overpressure, and facilitates achieving a good sealing effect of the compensating joint.

[0018] 1. An outer cylinder, an inner cylinder, a first flange and a second flange are provided. Since the inner side of the lower end of the outer cylinder is nested and fitted with the inner cylinder, the first flange and the second flange are fixedly connected to the outer cylinder and the lower part of the inner cylinder respectively. The fixing rods fixedly connected to the front end and the lower sides of the left and right ends of the first flange are in non-detachable clamping connection with the limiting sleeves fixed to the front end and the upper sides of the left and right ends of the second flange. Symmetrical connecting rods are fixedly connected to the inner sides of the rear ends of the first flange and the second flange. The outer sides of the inner ends of the connecting rods are threadedly connected with movable sleeves. Therefore, it is convenient to adjust the overall length of the compensating joint to meet the connection work of different lengths.

[0019] 2. An inner cylinder, a compression sponge and a shrink film are provided. Since the compression sponge is fitted to the inner side of the middle part of the inner cylinder, and the shrink film which is fixedly connected to the inner cylinder by pasting is nested and fitted outside the compression sponge, it is convenient to carry out pressure compensation for the introduced medium and avoid affecting the service life due to overpressure.

[0020] 3. A first gasket, a second gasket, a third gasket and a fourth gasket are provided. Since the first gasket which is fitted to the outer cylinder is fixedly pasted on the upper surface of the inner cylinder, the second gasket which is fitted to the inner cylinder is fixedly pasted on the lower surface of the outer cylinder, and the fourth gasket is respectively fitted to the upper part of the first flange and the lower part of the second flange, it is convenient to make the compensating joint have good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front view three-dimensional structural schematic diagram of the present utility model;

[0022] Figure 2 is a rear view three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 3 is a front view sectional structural schematic diagram of the present utility model;

[0024] Figure 4 is a front view sectional three-dimensional structural schematic diagram of the connection between the inner cylinder and the compression sponge of the present utility model.

[0025] In the figure: 1. Outer cylinder; 2. Inner cylinder; 3. First flange; 4. Second flange; 5. Fixing rod; 6. Limiting sleeve; 7. Connecting rod; 8. Movable sleeve; 9. Compression sponge; 10. Shrink film; 11. First gasket; 12. Second gasket; 13. Third gasket; 14. Fourth gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-4 , the present invention provides a technical solution: a sealed compensating joint, including an outer cylinder 1, an inner cylinder 2, a first flange 3, a second flange 4, a fixing rod 5, a limiting sleeve 6, a connecting rod 7, a movable sleeve 8, a compression sponge 9, a shrink film 10, a first sealing gasket 11, a second sealing gasket 12, a third sealing gasket 13 and a fourth sealing gasket 14. The inner cylinder 2 nested and fitted in the outer cylinder 1, and the first flange 3 and the second flange 4 fixedly connected to the upper surface of the outer cylinder 1 and the lower surface of the inner cylinder 2 respectively. An adjustable connection structure is arranged between the first flange 3 and the second flange 4. The adjustable connection structure includes a fixing rod 5, a limiting sleeve 6, a connecting rod 7 and a movable sleeve 8. The fixing rod 5 is fixedly connected to the lower side of the front end and the lower sides of the left and right ends of the first flange 3. A compressible structure is arranged inside the inner cylinder 2. The compressible structure includes a compression sponge 9 and a shrink film 10. The compression sponge 9 is attached to the inner side of the middle part of the inner cylinder 2. Sealing structures are arranged on the outer cylinder 1, the inner cylinder 2, the first flange 3 and the second flange 4. The sealing structures include a first sealing gasket 11, a second sealing gasket 12, a third sealing gasket 13 and a fourth sealing gasket 14. The first sealing gasket 11 and the second sealing gasket 12 are respectively fixed to the upper surface of the inner cylinder 2 and the lower surface of the outer cylinder 1. Specific Embodiment 1

[0029] In order to solve the problems in the prior art that it is inconvenient to adjust the overall length of the compensating joint, it is difficult to meet the connection work of different lengths, and it is inconvenient to perform pressure compensation on the introduced medium. Therefore, this embodiment adopts the following technical solutions, such as Figure 1 , Figure 2 and Figure 3, first, the compensating joint can be placed at the position to be installed, and then the movable sleeve 8 threadedly connected to the outer side of the inner end of the connecting rod 7 monomer can be rotated. Since the outer ends of the connecting rod 7 monomers are respectively fixedly connected to the first flange 3 and the second flange 4, the front end and the lower sides of the left and right ends of the first flange 3 are fixedly connected with fixing rods 5, and the front end and the upper sides of the left and right ends of the second flange 4 are fixedly connected with limiting sleeves 6 which are in non-detachable clamping connection with the fixing rods 5. The inner cylinder 2 fixedly connected to the upper side of the inner end of the second flange 4 and the outer cylinder 1 fixedly connected to the lower side of the inner end of the first flange 3 are in nested and fitting connection. Therefore, by rotating the movable sleeve 8, it is convenient to drive the first flange 3 and the second flange 4 through the connecting rod 7 to move in the reverse direction under the clamping and limiting of the fixing rod 5 and the limiting sleeve 6, and then adjust the distance between the outer cylinder 1 and the inner cylinder 2, so as to conveniently adjust the overall length of the compensating joint to meet the connection work of different lengths;

[0030] After adjusting the two ends of the compensating joint to the third sealing gasket 13 that fits outside the first flange 3 and the fourth sealing gasket 14 that fits outside the second flange 4 and respectively fitting with the two ends of the component to be connected, the rotation of the movable sleeve 8 can be stopped, and the compensating joint can be fixed to the component to be connected with bolts. Specific Embodiment Two

[0032] In order to solve the problems in the prior art that the service life is affected by overpressure and the sealing effect is limited, therefore, in this embodiment, the following technical solutions are adopted, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 , during the use of the compensating joint, through the compression sponge 9 fittingly arranged on the inner side of the middle part of the inner cylinder 2 and the shrink film 10 which is nested and fittingly arranged outside the compression sponge 9 and fixedly connected to the inner cylinder 2 by pasting, it is convenient to make pressure compensation for the medium introduced into the compensating joint through the compression performance of the compression sponge 9 and the shrink film 10, and avoid affecting the service life due to overpressure;

[0033] And by a first sealing gasket 11 fittingly arranged inside the outer cylinder 1 and fixedly pasted on the upper surface of the inner cylinder 2, a second sealing gasket 12 fittingly arranged outside the inner cylinder 2 and fixedly pasted on the lower surface of the outer cylinder 1, and a third sealing gasket 13 and a fourth sealing gasket 14 respectively fittingly arranged outside the first flange 3 and the second flange 4 and the connecting component, it is convenient to ensure the sealing performance of the connection between the outer cylinder 1 and the inner cylinder 2 and between the first flange 3 and the second flange 4 and the connecting component under the self-sealing performance of the first sealing gasket 11, the second sealing gasket 12, the third sealing gasket 13 and the fourth sealing gasket 14, so as to make the compensating joint have a good sealing effect. All the electrical components included above are prior arts and will not be elaborated here.

[0034] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can all be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0035] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sealed compensating joint, comprising: An outer cylinder (1), an inner cylinder (2) nested and fitted inside the outer cylinder (1), and a first flange (3) and a second flange (4) respectively fixedly connected to the upper surface of the outer cylinder (1) and the lower surface of the inner cylinder (2); It is characterized by further comprising: An adjustable connection structure is provided between the first flange (3) and the second flange (4), wherein the adjustable connection structure comprises a fixing rod (5), a limiting sleeve (6), a connecting rod (7) and a movable sleeve (8), and the fixing rod (5) is fixedly connected to the lower side of the front end and the lower sides of the left and right ends of the first flange (3); A compressible structure is arranged on the inner side of the inner tube (2), wherein the compressible structure comprises a compression sponge (9) and a shrink film (10), and the compression sponge (9) is attached to the inner side of the middle part of the inner tube (2); The outer cylinder (1), the inner cylinder (2), the first flange (3) and the second flange (4) are provided with a sealing structure, wherein the sealing structure comprises a first sealing gasket (11), a second sealing gasket (12), a third sealing gasket (13) and a fourth sealing gasket (14), and the first sealing gasket (11) and the second sealing gasket (12) are respectively fixed to the upper surface of the inner cylinder (2) and the lower surface of the outer cylinder (1).

2. A sealed compensating joint according to claim 1, characterized in that: The outer side of the lower end of the fixing rod (5) is non-detachably connected to a limiting sleeve (6), and the limiting sleeve (6) is fixedly connected to the front end and the upper surfaces of the left and right ends of the second flange (4).

3. A sealed compensating joint according to claim 1, characterized in that: The lower side of the rear end of the first flange (3) and the upper side of the rear end of the second flange (4) are both fixedly connected with a connecting rod (7), and the connecting rod (7) monomers are symmetrically arranged, and the outer side of the inner end of the connecting rod (7) monomer is threadedly connected with a movable sleeve (8).

4. A sealed compensating joint according to claim 1, characterized in that: The compressed sponge (9) is nested with a shrink film (10) outside, and the shrink film (10) is fixedly connected to the inner tube (2) by adhesive bonding, and the front view cross-sections of the compressed sponge (9) and the shrink film (10) are semicircular and C-shaped structures respectively.

5. A sealed compensating joint according to claim 1, characterized in that: The inner and outer diameters of the first sealing gasket (11) are the same as those of the inner and outer diameters of the inner tube (2), and the outer side of the first sealing gasket (11) is tightly fitted and connected to the outer tube (1).

6. A sealed compensating joint according to claim 1, characterized in that: The inner and outer diameters of the second sealing gasket (12) are the same as those of the outer tube (1), and the inner side of the second sealing gasket (12) is tightly fitted and connected to the inner tube (2).

7. A sealed compensating joint according to claim 1, characterized in that: A third sealing gasket (13) and a fourth sealing gasket (14) are respectively fitted on the upper surface of the first flange (3) and the lower surface of the second flange (4), and the inner diameter size of the third sealing gasket (13) and the inner diameter size of the fourth sealing gasket (14) are respectively the same as the inner diameter size of the first flange (3) and the second flange (4).

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