Polytetrafluoroethylene compensator

Abstract

The utility model relates to the technical field of pipeline compensators, in particular to a polytetrafluoroethylene compensator which comprises two sealing discs, the two sealing discs are connected through a plurality of fixing screws, and a corrugated pipe made of polytetrafluoroethylene materials is arranged between the two sealing discs. Connecting assemblies used for being connected with the sealing disc are arranged at the ends of the two sides of the corrugated pipe correspondingly, a fastening assembly capable of fastening connection of the corrugated pipe and the sealing disc is arranged on the side, away from the corrugated pipe, of the sealing disc, and the fastening assembly comprises a connecting thread end and a fixing thread end, so that the mounting stability of the corrugated pipe is improved, and the service life of the corrugated pipe is prolonged. And the phenomenon that the corrugated pipe is loosened during later use is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline compensators, in particular to a polytetrafluoroethylene compensator. Background Art

[0002] The compensator is composed of bellows, flanges, guide rods and other accessories. It uses the effective expansion and contraction of the bellows to absorb the dimensional changes of pipelines, ducts and containers caused by thermal expansion and contraction, or to compensate for the axial, lateral and angular displacement of pipelines, ducts and containers. It can also be used to reduce noise and vibration and is widely used in modern industry.

[0003] The polytetrafluoroethylene compensator is an industrial instrument used to compensate for the displacement and installation deviation caused by thermal expansion and contraction in the pipeline system of highly corrosive media, thereby reducing the vibration of the pipeline system. When the medium in the pipeline system flows back, a short vacuum state will be formed in the polytetrafluoroethylene compensator. The polytetrafluoroethylene compensator has good pressure resistance, so it is often used in vacuum-resistant and high-temperature-resistant tower sections and reactors.

[0004] The connection between the bellows and the flange in the existing polytetrafluoroethylene compensator is not stable, and long-term use may easily cause the bellows to be displaced or loosened, thereby reducing the service life of the polytetrafluoroethylene compensator. Utility Model Content

[0005] The purpose of the utility model is to provide a polytetrafluoroethylene compensator in view of the defects of the prior art, so as to solve the problem that the connection between the bellows and the flange in the existing polytetrafluoroethylene compensator is unstable, and the bellows is easily displaced or loosened after long-term use, thereby reducing the service life of the polytetrafluoroethylene compensator.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model comprises two sealing discs, the two sealing discs are connected by a plurality of fixing screws, a bellows made of polytetrafluoroethylene material is arranged between the two sealing discs, both ends of the bellows are provided with connecting components for connecting with the sealing discs, a side of the sealing disc away from the bellows is provided with a fastening component capable of fastening the connection between the bellows and the sealing disc, and the fastening component comprises a connecting threaded end and a fixing threaded end;

[0008] The connecting assembly comprises a connecting pipe connected to the bellows, an inner wall of the connecting pipe is provided with a connecting internal thread threadedly connected to the connecting thread end, an outer end surface of the connecting pipe is provided with a relative fixing block, an end of the fixing block away from the bellows is provided with a guide plate, and an outer end surface of the fixing block is provided with a first connecting semi-column;

[0009] A fixing portion in a hollow cylindrical structure is provided on one side of the sealing disk, a fixing groove capable of being plugged into a fixing block is provided on the fixing portion, a guide groove matched with the guide plate is provided on the inner end surface of the fixing groove, a second connecting half-column capable of forming a connecting stud with the first connecting half-column is provided on the outer side of the fixing portion, a fixing hole capable of being plugged into a connecting pipe after passing through the fixing portion is provided through the center position of the sealing disk, and a fixing internal thread screwed to the fixing thread end is provided on the inner side wall of the fixing hole.

[0010] As a preferred technical solution of the utility model, a connecting nut is installed on the connecting stud.

[0011] As a preferred technical solution of the utility model, a plurality of evenly distributed ear plates are provided on the outer end surface of the sealing disk, and mounting holes for the fixing screws to be inserted are penetrated through the ear plates.

[0012] As a preferred technical solution of the utility model, the connecting thread end and the fixed thread end are both hollow cylindrical structures with threads on the outer end faces, and the connecting thread end is connected to the fixed thread end.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Since the fixing block and guide plate on the bellows are connected with the fixing groove and guide groove on the sealing disk, the bellows and the sealing disk can be circumferentially limited to avoid excessive displacement between the bellows and the sealing disk, making the connection between the bellows and the sealing disk more stable.

[0015] 2. Since the first connecting half-column and the second connecting half-column on the connecting assembly cooperate with the connecting nut, the connection strength between the bellows and the sealing disk can be improved.

[0016] 3. Since the connecting thread end and the fixed thread end on the fastening assembly cooperate with the connecting internal thread and the fixed internal thread, the bellows and the sealing disk can be axially limited, thereby improving the connection tightness between the bellows and the sealing disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the sealing disk of the utility model;

[0019] Figure 3 This is a connection diagram of the bellows and the connection assembly of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the fastening assembly of the utility model;

[0021] In the figure: 1. Sealing disk; 11. Fixing part; 12. Fixing hole; 13. Fixed internal thread; 14. Fixing groove; 15. Guide groove; 16. Second connecting half column; 17. Ear plate; 18. Mounting hole; 2. Bellows; 3. Fastening assembly; 31. Connecting thread end; 32. Fixed thread end; 4. Fixing screw; 5. Connecting assembly; 51. Connecting pipe; 52. Fixing block; 53. Connecting internal thread; 54. First connecting half column; 55. Guide plate. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] Example

[0025] refer to Figures 1 to 4 As shown, this embodiment provides a polytetrafluoroethylene compensator, including

[0026] Two sealing disks 1 are connected by a plurality of fixing screws 4, a bellows 2 made of polytetrafluoroethylene material is arranged between the two sealing disks 1, both ends of the bellows 2 are provided with connecting components 5 for connecting with the sealing disks 1, and a fastening component 3 capable of fastening the connection between the bellows 2 and the sealing disk 1 is provided on the side of the sealing disk 1 away from the bellows 2.

[0027] When in use, the bellows 2 is connected to the sealing disk 1 through the connecting component 5 for installation, and then the fastening component 3 is installed from the end of the sealing disk 1 away from the bellows 2, thereby further improving the fastness of the connection between the bellows 2 and the sealing disk 1, and avoiding the bellows 2 from loosening during later use.

[0028] refer to Figure 2A fixing portion 11 with a hollow cylindrical structure is provided on one side of the sealing disk 1. A fixing hole 12 is provided at the center of the sealing disk 1 for the connecting pipe 51 to pass through the fixing portion 11 and be plugged in. A fixing internal thread 13 is provided on the inner wall of the fixing hole 12 and is threadedly connected to the fixing thread end 32.

[0029] Among them, the fixing part 11 is provided with a fixing groove 14 for the fixing block 52 to be inserted, and the inner end face of the fixing groove 14 is provided with a guide groove 15 adapted to the guide plate 55. The outer side of the fixing part 11 is provided with a second connecting half-column 16 that can form a connecting stud with the first connecting half-column 54, and a connecting nut (not marked) is installed on the connecting stud.

[0030] When in use, the connecting tube 51 is inserted into the fixing portion 11, and the guide plate 55 is adjusted to align with the guide groove 15 while being inserted. When the guide plate 55 is inserted to the bottom of the guide groove 15, the fixing block 52 is inserted into the fixing groove 14, so that the bellows 2 and the sealing disk 1 are initially fixedly connected, so that the bellows 2 and the sealing disk 1 can be circumferentially limited to avoid excessive displacement between the bellows 2 and the sealing disk 1, making the connection between the bellows 2 and the sealing disk 1 more stable. At this time, the first connecting half-column 54 on the connecting assembly 5 and the second connecting half-column 16 on the sealing disk 1 are fitted together to form a connecting stud, and the connecting nut (not marked) is installed on the connecting stud for fixing.

[0031] The outer end surface of the sealing disk 1 is provided with a plurality of evenly distributed ear plates 17 , and the ear plates 17 are penetrated with mounting holes 18 for the fixing screws 4 to pass through.

[0032] refer to Figure 3 The connecting assembly 5 includes a connecting pipe 51 connected to the bellows 2, and an internal connecting thread 53 threadedly connected to the connecting thread end 31 is provided on the inner wall of the connecting pipe 51. A relative fixing block 52 is provided on the outer end surface of the connecting pipe 51. A guide plate 55 is provided at the end of the fixing block 52 away from the bellows 2. The guide plate 55 and the fixing block 52 are connected by welding, thereby improving the connection strength between the two. A first connecting semi-column 54 is provided on the outer end surface of the fixing block 52.

[0033] refer to Figure 4 The fastening assembly 3 includes an integrally formed connecting thread end 31 and a fixed thread end 32. Both the connecting thread end 31 and the fixed thread end 32 are hollow cylindrical structures with threads on the outer end faces, and the connecting thread end 31 is connected to the fixed thread end 32 so as not to affect the flow of the medium.

[0034] When in use, after the bellows 2 is connected to the sealing disk 1 through the connecting assembly 5, the fastening assembly 3 is installed from the end of the sealing disk 1 away from the bellows 2, so that the connecting thread end 31 and the fixed thread end 32 on the fastening assembly 3 are respectively connected to the connecting internal thread 53 on the connecting pipe 51 and the fixed internal thread 13 in the sealing disk 1, thereby further improving the tightness of the connection between the bellows 2 and the sealing disk 1.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A polytetrafluoroethylene compensator, characterized in that: The invention comprises two sealing discs (1), the two sealing discs (1) are connected by a plurality of fixing screws (4), a bellows (2) made of polytetrafluoroethylene material is arranged between the two sealing discs (1), both ends of the bellows (2) are provided with connecting components (5) for connecting with the sealing discs (1), and a fastening component (3) capable of fastening the connection between the bellows (2) and the sealing disc (1) is arranged on a side of the sealing disc (1) away from the bellows (2), the fastening component (3) comprising a connecting thread end (31) and a fixing thread end (32); The connection assembly (5) comprises a connection pipe (51) connected to the corrugated pipe (2), an inner wall of the connection pipe (51) is provided with a connection internal thread (53) threadedly connected to the connection thread end (31), an outer end surface of the connection pipe (51) is provided with a corresponding fixing block (52), an end of the fixing block (52) away from the corrugated pipe (2) is provided with a guide plate (55), and an outer end surface of the fixing block (52) is provided with a first connection semi-column (54); A fixing portion (11) in the form of a hollow cylindrical structure is provided on one side of the sealing disk (1), a fixing groove (14) capable of being plugged into a fixing block (52) is provided on the fixing portion (11), a guide groove (15) adapted to the guide plate (55) is provided on the inner end surface of the fixing groove (14), a second connecting half-column (16) capable of forming a connecting stud with the first connecting half-column (54) is provided on the outer side of the fixing portion (11), a fixing hole (12) capable of being plugged into a connecting pipe (51) after passing through the fixing portion (11) is provided through the center of the sealing disk (1), and a fixing internal thread (13) screwed to the fixing thread end (32) is provided on the inner side wall of the fixing hole (12).

2. A polytetrafluoroethylene compensator according to claim 1, characterized in that: A connecting nut is installed on the connecting stud.

3. A polytetrafluoroethylene compensator according to claim 1, characterized in that: The outer end surface of the sealing disk (1) is provided with a plurality of evenly distributed ear plates (17), and the ear plates (17) are provided with mounting holes (18) through which the fixing screws (4) can be inserted.

4. A polytetrafluoroethylene compensator according to claim 1, characterized in that: The connecting thread end (31) and the fixing thread end (32) are both hollow cylindrical structures with threads on the outer end surfaces, and the connecting thread end (31) and the fixing thread end (32) are connected.

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