CN218895107U

CN218895107U - Plastic sealing gasket

Info

Publication number: CN218895107U
Application number: CN202223494650.5U
Authority: CN
Inventors: 项行峰; 高雄辉; 张辉; 金强; 曹祥立
Original assignee: Wuhan Haiyu Electronic Co ltd
Current assignee: Wuhan Haiyu Electronic Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-21
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a plastic sealing gasket, which comprises a sealing gasket body, wherein an external supporting ring is arranged on the outer surface of the sealing gasket body, one part of the external supporting ring is positioned inside the sealing gasket body, one part of the external supporting ring is positioned outside the sealing gasket body, a reinforcing hole is formed in the part of the external supporting ring positioned inside the sealing gasket body, the sealing gasket body extends into the reinforcing hole, a centering component is arranged on the sealing gasket body, a through hole is formed in the part of the external supporting ring positioned outside the sealing gasket body, and a limiting hole is formed in the part of the external supporting ring positioned outside the sealing gasket body.

Description

Plastic sealing gasket

Technical Field

The utility model relates to the technical field of gaskets, in particular to a plastic sealing gasket.

Background

Plastic is "cold-fluctuant" so that plastic gaskets deform plastically, i.e., creep, under continuous loading over time, which places certain restrictions on its use. The bolts are tightened to seal so tightly that exceeding a certain compressive stress, the gasket will "cold flow" (creep) and collapse. These drawbacks directly affect the sealing performance and the service life of the sealing gasket.

The utility model discloses a chinese patent of present publication No. CN209398840U discloses a high seal bellows plastic gasket, its technical scheme main points are that gasket sealing pad body includes first pad body, second pad body and set up a plurality of elastic component between first pad body and second pad body, each elastic component is annular permutation form and sets up between first pad body and second pad body, this elastic component includes first elastomer and second elastomer, first elastomer and the crisscross setting of second elastomer, and first elastomer and second elastomer are crisscross and are formed with the first supporting zone that is the triangle shape with first pad body between, first elastomer and second elastomer are crisscross and are formed with the second supporting zone that is the triangle shape with second pad body between.

The above patent still has some disadvantages, and the sealing gasket needs to be manually supported in the installation process to avoid the sealing gasket and the flange from being misplaced to cause the unsatisfactory sealing effect, and this mode causes the inconvenience of the workman in installation operation, and when fastening and sealing gasket laminating are in the sealing gasket receive certain pressure in addition, the sealing gasket is difficult to move by manual with great friction between sealing gasket and the flange.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model aims to provide the plastic sealing gasket, which is characterized in that the alignment assembly is utilized to apply a force far away from the axis of the sealing gasket body to the external support ring, and under the matching action of a plurality of circumferentially distributed limiting rods, the sealing gasket body is aligned with the first flange and the second flange, so that the occurrence of the condition of unsatisfactory sealing effect caused by the offset generated between the sealing gasket and the flanges in the installation process is avoided.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a plastic sealing pad, includes the sealing pad body, the surface of sealing pad body is provided with outside backup ring, part of outside backup ring is located sealing pad body inside, part that outside backup ring is located sealing pad body outside, reinforcing hole has been seted up to the part that outside backup ring is located sealing pad body inside, the sealing pad body extends to reinforcing hole in, be provided with centering subassembly on the sealing pad body, the through hole has been seted up to the part that outside backup ring is located sealing pad body outside, spacing hole has been seted up to the part that outside backup ring is located sealing pad body outside.

Further preferably, the through holes are positioned between the limiting holes and the sealing gasket body, the through holes and the limiting holes are all provided with a plurality of through holes, the number of the through holes is the same as that of the limiting holes, and an extension line of a connecting line between circle centers of two adjacent through holes is a perpendicular line from the axis of the sealing gasket body to the curved surface of the external supporting ring.

Still preferably, the centering assembly comprises a plurality of cards, the cards are provided with a plurality of cards and are in a circumferential array, the cards are of an L shape, the vertical parts of the cards are limiting areas, the horizontal parts of the cards are connecting areas, the connecting areas of the cards are movably connected with limiting rods, one ends, far away from the cards, of the limiting rods are located in limiting holes, and the limiting rods are magnetically connected with the external supporting rings.

Further preferably, the limiting rods are movably connected with first connecting pieces, second connecting pieces are arranged between two adjacent limiting rods, the first connecting pieces and the second connecting pieces are made of elastic materials, pushing rods penetrate through the first connecting pieces, and pushing blocks are arranged on the pushing rods.

Further preferably, the push block is located between the card connection area and the limiting rod, the push block is a trapezoid block, the inclined surface of the push block is in contact with the limiting rod, and one end surface of the push block is in contact with the card connection area.

Further preferably, one end of the push rod away from the push block penetrates through the through hole and extends to the other side of the external supporting ring, and the one end of the push rod away from the push block is flush with the end face of the sealing gasket body away from the push block.

Further preferably, the inner ring of the sealing gasket body is provided with a containing groove, and inner supporting rings are symmetrically arranged in the containing groove.

Further preferably, two inner support rings are in contact at the side close to each other, and the inner support rings are arc-shaped.

Further preferably, an intermediate support ring is arranged in the sealing gasket body, and a support rod is fixedly connected between the outer support ring and the intermediate support ring. An outer support ring and a middle support ring. The supporting rod and the internal supporting ring form a stable supporting structure, the shape of the sealing gasket body is fixed through the stable supporting structure, the problem that the traditional plastic gasket is seriously deformed after being extruded is further avoided, the leakage of a pipeline is avoided, the occurrence of the condition that the sealing performance is influenced is avoided, and the stability of the plastic gasket is improved.

Further preferably, a buffer groove is formed in the sealing gasket body, and the supporting rod is located in the buffer groove. When the sealing gasket body is stressed in use, the inside of the sealing gasket body is contracted and deformed after the plastic is stressed, meanwhile, the buffer groove arranged in the sealing gasket body is deformed along with the plastic, and air in the buffer groove is discharged through a gap between the support rod and the sealing gasket body, so that the deformation degree of the sealing gasket body is reduced, creep of the sealing gasket body after long-term acceptance is reduced, and the service life of the sealing gasket is prolonged.

The utility model has the beneficial effects that:

1. according to the utility model, the alignment assembly is utilized to apply a force far away from the axis of the sealing gasket body to the external support ring, under the cooperation of the plurality of circumferentially distributed limiting rods, the sealing gasket body is centered with the first flange and the second flange, and the occurrence of the condition that the sealing effect is not ideal due to the deviation between the sealing gasket and the flanges in the installation process is avoided;

2. when the sealing gasket body is stressed in use, the inside of the sealing gasket body is contracted and deformed after the plastic is stressed, meanwhile, the buffer groove arranged in the sealing gasket body is deformed along with the plastic, and air in the buffer groove is discharged through a gap between the support rod and the sealing gasket body, so that the deformation degree of the sealing gasket body is reduced, the creep of the sealing gasket body after long-term acceptance is reduced, and the service life of the sealing gasket is prolonged.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the mating structure of the present utility model with a flange;

FIG. 2 is a schematic view of the overall structure of the present utility model;

FIG. 3 is a cross-sectional view of the gasket body construction of the present utility model;

FIG. 4 is a schematic view of the centering assembly of the present utility model;

fig. 5 is an enlarged view of the utility model at a in fig. 4.

In the figure:

1. a gasket body; 2. an outer support ring; 3. reinforcing the hole; 4. centering components; 5. a through hole; 6. a limiting hole; 7. a card; 8. a limit area; 9. a connection region; 10. a limit rod; 11. a first connector; 12. a second connector; 13. a push rod; 14. a pushing block; 15. a receiving groove; 16. an inner support ring; 17. a middle support ring; 18. a support rod; 19. a buffer tank; 20. a first flange; 21. and a second flange.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-5, a plastic sealing gasket comprises a sealing gasket body 1, an external supporting ring 2 is arranged on the outer surface of the sealing gasket body 1, a part of the external supporting ring 2 is positioned inside the sealing gasket body 1, a part of the external supporting ring 2 is positioned outside the sealing gasket body 1, a reinforcing hole 3 is formed in the part of the external supporting ring 2 positioned inside the sealing gasket body 1, the sealing gasket body 1 extends into the reinforcing hole 3, a centering component 4 is arranged on the sealing gasket body 1, a through hole 5 is formed in the part of the external supporting ring 2 positioned outside the sealing gasket body 1, and a limiting hole 6 is formed in the part of the external supporting ring 2 positioned outside the sealing gasket body 1. The through holes 5 are positioned between the limiting holes 6 and the sealing gasket body 1, the through holes 5 and the limiting holes 6 are all provided with a plurality of through holes 5 and the limiting holes 6, the number of the through holes 5 is the same as that of the limiting holes 6, and the extension line of the connecting line between the circle centers of two adjacent through holes 5 is the perpendicular line from the axis of the sealing gasket body 1 to the curved surface of the external supporting ring 2. The centering assembly 4 comprises a plurality of cards 7, the cards 7 are provided with a plurality of cards 7 which are in a circumferential array, the cards 7 are L-shaped, the vertical parts of the cards 7 are limiting areas 8, the horizontal parts of the cards 7 are connecting areas 9, the connecting areas 9 of the cards 7 are movably connected with limiting rods 10, one ends, far away from the cards 7, of the limiting rods 10 are located in limiting holes 6, and the limiting rods 10 are magnetically connected with the outer supporting rings 2. The limiting rods 10 are movably connected with first connecting pieces 11, second connecting pieces 12 are arranged between two adjacent limiting rods 10, the first connecting pieces 11 and the second connecting pieces 12 are made of elastic materials, push rods 13 penetrate through the first connecting pieces 11, and push blocks 14 are arranged on the push rods 13. The push block 14 is located between the card 7 connecting area 9 and the limiting rod 10, the push block 14 is a trapezoid block, the inclined surface of the push block 14 is in contact with the limiting rod 10, and one end face of the push block 14 is in contact with the card 7 connecting area 9. The end of the push rod 13 far away from the push block 14 penetrates through the through hole 5 and extends to the other side of the outer support ring 2, and the end of the push rod 13 far away from the push block 14 is flush with the end face of the sealing gasket body 1 far away from the push block 14. The inner ring of the sealing gasket body 1 is provided with a containing groove 15, and inner supporting rings 16 are symmetrically arranged in the containing groove 15. The two inner support rings 16 are in contact with each other at the sides close to each other, and the inner support rings 16 are arc-shaped. The inside of sealed pad body 1 is provided with middle backing ring 17, fixedly connected with bracing piece 18 between outside backing ring 2 and the middle backing ring 17. An outer support ring 2 and an intermediate support ring 17. The support rod 18 and the inner support ring 16 form a stable support structure, the shape of the sealing gasket body 1 is fixed through the stable support structure, the problem that the traditional plastic gasket is seriously deformed after being extruded is further avoided, the leakage of a pipeline is avoided, the occurrence of the condition that the sealing performance is influenced is avoided, and the stability of the plastic gasket is improved. The inside of the sealing gasket body 1 is provided with a buffer groove 19, and the supporting rod 18 is positioned in the buffer groove 19. When the sealing gasket body 1 is stressed in use, the inside of the sealing gasket body is contracted and deformed after the plastic is stressed, meanwhile, the buffer groove 19 arranged in the sealing gasket body 1 is deformed along with the plastic, and air in the buffer groove 19 is discharged through a gap between the support rod 18 and the sealing gasket body 1, so that the deformation degree of the sealing gasket body 1 is reduced, creep of the sealing gasket body 1 after long-term acceptance is reduced, and the service life of the sealing gasket is prolonged.

Working principle:

during installation, the gasket body 1 is attached to the first flange 20, the limiting areas 8 of all the cards 7 are plugged between the gasket body 1 and the first flange 20, the connecting areas 9 of the cards 7 are attached to the surface of the first flange 20, then the second flange 21 is attached to the other side of the gasket body 1, the first flange 20 and the second flange 21 are then fixed, in the fixing process, the first flange 20 is close to the second flange 21, the gasket body 1 is deformed and drives the push rod 13 and the push block 14 to approach the connecting position of the cards 7 and the limiting rod 10, so that the opening angle between the limiting rod 10 and the connecting areas 9 of the cards 7 is enlarged, and the connecting areas 9 of the cards 7 are attached to the first flange 20, so that a rotating force around the connecting position of the limiting rod 10 and the cards 7 is applied to the limiting rod 10, and the force is conducted to the outer supporting ring 2 because one end of the limiting rod 10 is located in the limiting hole 6 of the outer supporting ring 2, the force away from the axis of the gasket body 1 is applied to the outer supporting ring 2, the sealing rod is distributed in a plurality of circumferential matching actions, and the gasket 1 and the ideal sealing gasket 1 and the sealing gasket is prevented from being offset from being generated between the first flange and the second flange and the gasket body.

When the sealing gasket body 1 is stressed in use, the inside of the sealing gasket body 1 contracts and deforms after the plastic is stressed, meanwhile, the buffer groove 19 arranged in the sealing gasket body 1 deforms along with the plastic, and air in the buffer groove 19 is discharged through a gap between the support rod 18 and the sealing gasket body 1, so that the deformation degree of the sealing gasket body 1 is reduced, creep of the sealing gasket body 1 after long-term stress is reduced, and the service life of the sealing gasket is prolonged.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The utility model provides a plastic sealing pad, its characterized in that, including sealing pad body (1), the surface of sealing pad body (1) is provided with outside backup ring (2), part of outside backup ring (2) is located sealing pad body (1) inside, part of outside backup ring (2) is located sealing pad body (1) outside, reinforcing hole (3) have been seted up to part that outside backup ring (2) are located sealing pad body (1) inside, sealing pad body (1) extends to reinforcing hole (3) in, be provided with centering subassembly (4) on sealing pad body (1), through hole (5) have been seted up to part that outside backup ring (2) are located sealing pad body (1) outside, limiting hole (6) have been seted up to part that outside backup ring (2) are located sealing pad body (1) outside.

2. The plastic sealing gasket according to claim 1, wherein the through holes (5) are located between the limiting holes (6) and the sealing gasket body (1), the through holes (5) and the limiting holes (6) are all provided with a plurality of through holes (5) and the limiting holes (6), the number of the through holes (5) is the same as that of the limiting holes (6), and an extension line of a connecting line between circle centers of two adjacent through holes (5) is a perpendicular line from the axle center of the sealing gasket body (1) to the curved surface of the external supporting ring (2).

3. The plastic sealing gasket according to claim 1, wherein the centering component (4) comprises a plurality of cards (7), the cards (7) are provided with a plurality of cards (7) in a circumferential array, the cards (7) are of an L shape, the vertical parts of the cards (7) are limiting areas (8), the horizontal parts of the cards (7) are connecting areas (9), the connecting areas (9) of the cards (7) are movably connected with limiting rods (10), one ends, far away from the cards (7), of the limiting rods (10) are located in limiting holes (6), and the limiting rods (10) are magnetically connected with the external supporting rings (2).

4. A plastic sealing gasket according to claim 3, characterized in that the limiting rods (10) are movably connected with first connecting pieces (11), second connecting pieces (12) are arranged between two adjacent limiting rods (10), the first connecting pieces (11) and the second connecting pieces (12) are made of elastic materials, push rods (13) penetrate through the first connecting pieces (11), and push blocks (14) are arranged on the push rods (13).

5. The plastic gasket according to claim 4, wherein the push block (14) is located between the connection area (9) of the card (7) and the stop lever (10), the push block (14) is a trapezoid block, an inclined surface of the push block (14) is in contact with the stop lever (10), and one end surface of the push block (14) is in contact with the connection area (9) of the card (7).

6. The plastic gasket according to claim 4, wherein one end of the push rod (13) away from the push block (14) penetrates through the through hole (5) and extends to the other side of the outer support ring (2), and one end of the push rod (13) away from the push block (14) is flush with one end face of the gasket body (1) away from the push block (14).

7. The plastic gasket according to claim 1, wherein the inner ring of the gasket body (1) is provided with a receiving groove (15), and an inner supporting ring (16) is symmetrically arranged inside the receiving groove (15).

8. The plastic gasket of claim 7, wherein two inner support rings (16) are in contact on the side of each other that is adjacent, the inner support rings (16) being arcuate.

9. The plastic gasket according to claim 7, wherein an intermediate support ring (17) is provided inside the gasket body (1), and a support rod (18) is fixedly connected between the outer support ring (2) and the intermediate support ring (17).

10. The plastic gasket according to claim 9, wherein a buffer groove (19) is formed in the gasket body (1), and the support rod (18) is located in the buffer groove (19).