CN223677265U - Double-sealing flange - Google Patents

Abstract

The utility model discloses a double-sealing flange which comprises a left valve body through pipe and a right valve body through pipe, wherein one ends of the left valve body through pipe and the right valve body through pipe, which are close to each other, are connected through threads, limiting rings are arranged at the connecting positions, one ends of the left valve body through pipe and the right valve body through pipe, which are far away from each other, are movably connected with a flange static plate, sliding protruding blocks are vertically arranged on the left valve body through pipe and the right valve body through pipe along the peripheral length, a flange moving plate is sleeved on the sliding protruding blocks through sliding grooves, and a plurality of through holes are formed in the flange moving plate and the flange static plate. The utility model improves the sealing performance and prevents leakage by arranging the double sealing structure between the flange connection surfaces, and is particularly suitable for high-pressure, high-temperature or corrosive medium environments.

Description

Double-sealing flange

Technical Field

The utility model relates to the technical field of flange sealing, in particular to a double-sealing flange.

Background

In the prior art, the flange is used as a connecting part between devices such as pipelines, containers and the like, and the sealing performance directly influences the safety and stability of the whole system. However, the conventional flange generally adopts a single-layer sealing structure, such as a rubber gasket or a metal gasket, and often has the problems of poor sealing, easy leakage and the like under high-pressure, high-temperature or corrosive medium environments, and particularly the problems are more remarkable under the high-pressure, high-temperature or corrosive environments. Therefore, it is important to develop a flange connection device with better sealing performance.

Disclosure of utility model

The utility model provides a double-sealing flange, which solves the problems in the prior art.

In order to achieve the aim, the embodiment of the utility model provides a double-sealing flange, which comprises a left valve body through pipe and a right valve body through pipe, wherein one ends of the left valve body through pipe and the right valve body through pipe, which are close to each other, are connected through threads, and limit rings are arranged at the connecting positions;

The left valve body through pipe and the right valve body through pipe are vertically provided with sliding lugs along the peripheral length, and the sliding lugs are sleeved with flange movable plates through sliding grooves;

And a plurality of through holes are formed in the flange moving plate and the flange static plate.

Preferably, a limit groove is further formed in one surface, close to the limit ring, of the flange moving plate.

Preferably, the limiting ring is further provided with a sealing gasket.

Preferably, the through holes on the flange moving plate and the flange static plate are staggered.

Preferably, the flange static plate is provided with a notch at the position of the flange moving plate through hole.

Compared with the prior art, the utility model has the following advantages:

The double sealing structure is arranged, so that the sealing performance of the flange is remarkably improved, the flange is particularly suitable for high-pressure, high-temperature or corrosive medium environments, and the leakage problem is effectively prevented.

The double-seal structure design remarkably improves the sealing performance, and two sealing rings are matched with each other, so that even if one sealing ring slightly leaks, the other sealing ring still can play a sealing role, and the leakage risk is greatly reduced. The rubber material of the first sealing ring and the metal material of the second sealing ring are combined, so that the characteristics of elastic sealing, high temperature resistance and corrosion resistance are taken into consideration, the flange is suitable for various working conditions, and the application range of the flange is widened.

The design of the sliding protruding blocks and the sliding grooves ensures the neutrality of the flange during installation and avoids the sealing failure caused by dislocation of the flange moving plate.

The sliding protruding blocks are arranged as reinforcing ribs, so that the overall strength and deformation resistance of the flange are improved, and the service life of the flange is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the structure of the present utility model.

FIG. 2 is a schematic diagram of a flange plate according to the present utility model.

The valve comprises a left valve body through pipe 1, a right valve body through pipe 2, a flange moving plate 3, a flange static plate 4, a sliding lug 5, a through hole 6, a limiting ring 7, a sliding groove 8, a limiting groove 9 and a limiting groove.

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.

Referring to fig. 1-2, the utility model discloses a double-sealing flange, which comprises a left valve body through pipe 1 and a right valve body through pipe 2, wherein one ends of the left valve body through pipe 1 and the right valve body through pipe 2 which are close to each other are connected through threads, and limit rings 7 are arranged at the connecting positions;

The left valve body through pipe 1 and the right valve body through pipe 2 are vertically provided with sliding lugs 5 along the outer circumferences, and the sliding lugs 5 are sleeved with a flange moving plate 3 through sliding grooves 8;

The flange moving plate 3 can slide on the valve body through the sliding groove 8, and the left valve body through pipe 1 and the right valve body through pipe 2 can be connected through threads by rotating the flange moving plate 3 on one side of the valve body through pipe when in use.

The flange static plate 4 arranged at the bottom of the valve body through pipe can not only stabilize the whole sealing structure, but also limit the position of the flange moving plate 3.

The design of the sliding protruding blocks 5 and the sliding grooves 8 ensures the neutrality during the flange installation and avoids the sealing failure caused by the dislocation of the flange moving plate 3.

The sliding groove 8 can be provided with a plurality of, preferably five, annular reinforcing ribs so as to improve the overall strength and deformation resistance of the flange and prolong the service life of the flange.

And a plurality of through holes 6 are formed in the flange movable plate 3 and the flange static plate 4.

The number of the through holes 6 is preferably six, and the two flange movable plates 3 can be fixed through the through holes 6 by using fastening bolts and fastening nuts in use.

The through hole 6 on the flange static plate 4 can fix one end of the valve body through pipe to any place, such as a wall and a mechanical surface, through the fastening device, so that the practicability of the valve body through pipe is improved.

In order to further optimize the technical scheme, a limit groove 9 is further formed in one surface of the flange moving plate 3, which is close to the limit ring 7.

In order to further optimize the technical scheme, the limiting ring 7 is also provided with a sealing gasket.

The sealing gasket is used for covering the outer circumference of the limiting ring 7 in a wrapping mode, and is made of rubber or polytetrafluoroethylene, preferably rubber, so that high temperature resistance and high pressure resistance are improved.

The arrangement of the limit groove 9 and the limit ring 7 in sealing connection further strengthens the centering of the flange moving plate 3, and simultaneously increases the sealing performance of the sealing flange.

The first sealing device is made of rubber materials on the limiting ring 7, has good elasticity and flexibility, can effectively fill a sealing gap, and the second sealing ring is made of metal, is high-temperature resistant and corrosion resistant, and can keep stable sealing performance in severe environments.

In order to further optimize the technical scheme, the through holes 6 on the flange movable plate 3 and the flange static plate 4 are arranged in a staggered mode.

In order to further optimize the technical scheme, the gap is arranged at the position of the through hole of the flange moving plate 3 on the flange static plate 4.

The staggered arrangement of the gaps and the through holes 6 on the through holes of the flange moving plate 3 can save materials, give out construction space and bring more convenience for personnel to operate.

The double-sealing flange comprises a double-sealing flange, wherein a left valve body through pipe 1 and a right valve body through pipe 2 are mutually close to each other, a flange moving plate 3 is rotated, the left valve body through pipe 1 and the right valve body through pipe 2 are in threaded connection, a limiting ring 7 on the left valve body through pipe 1 and the right valve body through pipe 2 is closed together at the moment, the first-layer sealing is completed, a flange moving plate 3 on the left valve body through pipe 1 and the right valve body through pipe 2 is slid, a limiting groove 9 on the flange moving plate 3 is clamped into the limiting ring 7, at the moment, the two flange moving plates 3 are tightly attached, and the two flange moving plates 3 are fastened through a fastening through hole 6 by using a fastening bolt and a fastening nut, and at the moment, the second-layer sealing is completed.

When the sealing ring in the rear flange butterfly valve is used for a long time and needs to be replaced, the fastening bolt and the fastening nut are unscrewed from the flange moving plate 3, the flange moving plate 3 is reversely rotated, and the left valve body through pipe 1 and the right valve body through pipe 2 are separated in a rotating mode.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A double-sealing flange is characterized by comprising a left valve body through pipe (1) and a right valve body through pipe (2), wherein one ends of the left valve body through pipe (1) and the right valve body through pipe (2) which are close to each other are connected through threads, and limit rings (7) are arranged at the connecting positions;

the left valve body through pipe (1) and the right valve body through pipe (2) are vertically provided with sliding lugs (5) along the peripheral length, and the sliding lugs (5) are sleeved with a flange moving plate (3) through sliding grooves (8);

and a plurality of through holes (6) are formed in the flange moving plate (3) and the flange static plate (4).

2. The double-sealing flange according to claim 1, wherein a limiting groove (9) is further formed in one surface of the flange moving plate (3) close to the limiting ring (7).

3. Double-sealing flange according to claim 1, characterized in that the stop collar (7) is further provided with a sealing gasket.

4. Double-sealing flange according to claim 1, characterized in that the through holes (6) in the moving flange (3) and the stationary flange (4) are staggered.

5. Double-sealing flange according to claim 1, characterized in that the stationary flange (4) is provided with a notch at the through hole of the movable flange (3).