CN222277774U

CN222277774U - High leakproofness flange

Info

Publication number: CN222277774U
Application number: CN202421220256.9U
Authority: CN
Inventors: 唐凯
Original assignee: Changzhou Huanhu Forging Co ltd
Current assignee: Changzhou Huanhu Forging Co ltd
Priority date: 2024-05-31
Filing date: 2024-05-31
Publication date: 2024-12-31
Anticipated expiration: 2034-05-31

Abstract

The utility model relates to a high-sealing flange, including a flange assembly and a sealing cover arranged on the outside of the flange assembly, the sealing cover including a cover 1 and a cover 2, one end of the cover 1 is hinged with one end of the cover 2, the other end of the cover 1 is detachably connected with the other end of the cover 2, the inner walls of the cover 1 and the cover 2 are both connected with sealing air cushions, a sealing air cavity is arranged inside the sealing air cushions, the sealing air cushions are covered on both side end faces and the outer peripheral surface of the flange assembly, and the sealing air cushions are in contact with both side end faces and the outer peripheral surface of the flange assembly to form a seal. The main purpose of the utility model is to provide a high-sealing flange with good sealing performance, significant and reliable effect, and convenient disassembly and assembly.

Description

High leakproofness flange

Technical Field

The utility model relates to a flange, in particular to a flange with high tightness.

Background

The flange (flange) is also called flange plate or flange. Is a common connection component for connecting two pipes or two devices. The flange is a disk-shaped part, a plurality of holes are formed in the edge of the flange, and the two flanges are tightly connected through bolts. In order to improve the sealing effect, a sealing ring is usually arranged between the flanges for sealing.

Among the prior art, chinese patent with publication No. CN 217683776U discloses a sealing flange, it receives the extrusion dislocation to have solved single sealing washer seal between the present flange, easily cause the poor problem of sealing effect, this technical scheme includes first flange spare and second flange spare, first flange spare one end is connected with the second flange spare, first flange spare includes first flange circle, first flange circle one end fixedly connected with first flange pipe, this technical scheme is located between first flange circle and the second flange circle through first sealing washer and plays sealed effect, the second sealing washer plays sealed effect at annular groove and annular flange contact terminal surface, under such dual sealing effect, make the device flange structure sealed effectual, and the cross-section between first sealing washer and second sealing washer and corresponding first seal groove and the second seal groove all is trapezium structure, make first sealing washer and second sealing washer can not produce the dislocation when receiving the extrusion, thereby further improved sealed effect. However, the first flange member and the second flange member of the technical scheme are loosened, and when the gap is increased, the sealing performance is still reduced, and the problem of pipeline leakage is still easy to occur.

Disclosure of utility model

In order to overcome the defects of the prior art, the utility model aims to provide the high-tightness flange which is good in tightness, obvious and reliable in effect and convenient to assemble and disassemble.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a high leakproofness flange, includes flange subassembly and cover establish the sealed cowling in the flange subassembly outside, the sealed cowling includes cover one and cover two, the one end of cover one is articulated mutually with the one end of cover two, the other end of cover one is connected with the other end detachably of cover two, all be connected with sealed air cushion on the inner wall of cover one and cover two, sealed air cushion inside is equipped with sealed air cavity, sealed air cushion cladding is on flange subassembly's both sides terminal surface and outer peripheral face, just sealed air cushion and flange subassembly's both sides terminal surface and outer peripheral face butt form sealedly.

Further, the sealing air cushion comprises two side air cushions and a middle air cushion connected between the two side air cushions, the outer surfaces of the two side air cushions are respectively abutted with the end surfaces of the two sides of the flange assembly, and the outer surface of the middle air cushion is abutted with the outer peripheral surface of the flange assembly.

Further, the outer surface of the side air cushion is of an uneven wavy structure.

Further, the middle air cushion is provided with a convex part protruding outwards.

Further, the sealing cover and the flange component are fixedly connected through a plurality of connecting bolts.

Further, one end of the first sleeve cover is hinged with one end of the second sleeve cover through a hinge shaft, the other end of the second sleeve cover outwards extends to form an extension part, and the extension part is fixedly connected with the end part of the other end of the first sleeve cover through a connecting bolt.

Further, the flange assembly comprises a first flange piece and a second flange piece which are connected through bolts, and a gap between two opposite end surfaces of the first flange piece and the second flange piece corresponds to the position of the protruding part.

Further, two opposite end surfaces on the first flange piece and the second flange piece are respectively provided with a first groove and a second groove, the cross section structure of the first groove is of a convex structure, and the first groove and the second groove are internally matched and clamped with sealing rings.

Compared with the prior art, the sealing device has the beneficial effects that the clamping sealing ring is arranged between the first flange piece and the second flange piece and is used for sealing a gap between the first flange piece and the second flange piece, when the gap between the first flange piece and the second flange piece is enlarged and the sealing performance of the sealing ring is greatly reduced, the sealing air cushion arranged on the sealing cover is used for sealing the sealing cover, so that gas in a pipeline is effectively prevented from leaking from the gap between the first flange piece and the second flange piece, the sealing effect and the stability are improved, the sealing cover is convenient to assemble and disassemble, and the structure is reliable.

Drawings

FIG. 1 is a perspective view of a high tightness flange of the present utility model;

FIG. 2 is a front view of a high tightness flange of the present utility model;

FIG. 3 is a schematic cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is an enlarged partial schematic view at B in FIG. 3;

The flange comprises a flange component 1, a flange component 11, a flange component one, a groove one, a flange component 12, a flange component two, a groove 121, a groove two, a seal cover 2, a seal cover 21, a sleeve cover one, a sleeve cover 22, a sleeve cover two, a seal ring 221, an extension part 3, an air tap 4, a connecting bolt 5, a flange bolt hole 6, a seal ring 7, a seal air cushion 71, a side air cushion 72, a middle air cushion 721 and a protruding part.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

In the description of the technical solution of the present utility model, some azimuth terms, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc., are used for clearly describing the technical features of the present utility model, and are all according to the azimuth of the drawings of the present utility model.

Examples

As shown in fig. 1, 2 and 3, a high-tightness flange of the present embodiment includes a flange assembly 1 and a seal cover 2 provided outside the flange assembly 1. The flange assembly 1 comprises a first flange member 11 and a second flange member 12 which are connected through bolts, and the mode of adopting the bolt connection between the first flange member 11 and the second flange member 12 is a common technical means in the prior art, and no redundant description is needed here. The two opposite end surfaces of the first flange part 11 and the second flange part 12 are respectively provided with a first groove 111 and a second groove 121, the first groove 111 and the second groove 121 are of sealing annular structures, the cross section structure of the first groove 111 is of a convex structure, the first groove 111 and the second groove 121 are internally matched and clamped with a sealing ring 6, the cross section shape of the sealing ring 6 is matched with the cross section shapes of the first groove 111 and the second groove 121, and one side of the sealing ring 6 is clamped in the first groove 111 so as to avoid dislocation of the sealing ring 6 caused by extrusion.

The sealing cover 2 and the flange component 1 are fixedly connected through at least two connecting bolts 4 which are distributed at intervals, the cross section of the sealing cover 2 is of a [ -shaped structure, two side walls respectively correspond to two opposite end faces on the flange component 1, and the bottom wall connected between the two side walls corresponds to the outer circumferential face of the flange component 1. The seal cover 2 includes a first cover 21 and a second cover 22, one end of the first cover 21 is hinged to one end of the second cover 22, the other end of the first cover 21 is detachably connected to the other end of the second cover 22, in this embodiment, one end of the first cover 21 is hinged to one end of the second cover 22 through a hinge shaft, the other end of the second cover 22 extends outwards to form an extension part 221, and the extension part 221 is fixedly connected to the other end of the first cover 21 through a connecting bolt 4. During installation, the first sleeve cover 21 and the second sleeve cover 22 are sleeved on the outer side of the flange assembly 1, the first sleeve cover 21 and the second sleeve cover 22 are respectively connected and fixed with the flange assembly 1 through the connecting bolts 4, and the connecting bolts 4 penetrate through the extending parts 221 and the end parts of the first sleeve cover 21 to connect and fix the first sleeve cover 21 and the second sleeve cover 22.

In order to improve the sealing effect on the flange assembly 1, in this embodiment, the inner walls of the first sleeve cover 21 and the second sleeve cover 22 are both connected with a sealing air cushion 7, as shown in fig. 4, a sealing air cavity is arranged inside the sealing air cushion 7, the sealing air cavity is communicated with the air tap 3, and air is introduced into the air tap 3, so that the sealing air cavity expands. The sealing air cushion 7 is coated on the two side end surfaces and the outer peripheral surface of the flange assembly 1, and the sealing air cushion 7 is abutted with the two side end surfaces and the outer peripheral surface of the flange assembly 1 to form sealing.

Specifically, the sealing air cushion 7 includes two side air cushions 71 and a middle air cushion 72 connected between the two side air cushions 71, the outer surfaces of the two side air cushions 71 are respectively abutted with the two side end surfaces of the flange assembly 1, and the outer surface of the middle air cushion 72 is abutted with the outer peripheral surface of the flange assembly 1. The outer surface of the side air cushion 71 is of an uneven wavy structure, and the wavy structure is respectively abutted on the end face of the flange assembly 1 to form multiple seals, so that the leakage-proof effect is better. The middle cushion 72 is provided with a boss 721 protruding outward. The gap between the opposite end surfaces of the first flange member 11 and the second flange member 12 corresponds to the position of the boss 721.

When the flange assembly 1 is loosened due to long-term use or vibration, a gap between the first flange member 11 and the second flange member 12 becomes large, resulting in serious degradation of sealability. In order to solve this problem, in this embodiment, the sealing cover 2 is arranged on the outer cover of the flange assembly 1, when the flange assembly 1 loosens and the gap between the flange member one 11 and the flange member two 12 becomes larger, the two opposite end surfaces on the flange assembly 1 move away from each other, so as to further press the two side air cushions 71 in the sealing air cushion 7 abutted against the flange assembly 1, the side air cushions 71 are compressed and deformed under pressure, the gas enters the middle air cushion 72 to expand and become larger, and the gas is tightly abutted against the outer circumferential surface of the flange assembly 1, so that the tightness is enhanced, and meanwhile, the protruding part 721 also expands, so that the enlarged gap is sealed by plugging, and the sealing performance is further improved. The sealing cushion 7 of this embodiment may be made of rubber or silica gel with good expansion and compression resistance.

When the gap between the first flange piece 11 and the second flange piece 12 is enlarged and the tightness of the sealing ring 6 is greatly reduced, the sealing air cushion 7 arranged on the sealing cover 2 is used for sealing the gap between the first flange piece 11 and the second flange piece 12, so that gas in a pipeline is effectively prevented from leaking from the gap between the first flange piece 11 and the second flange piece 12, the sealing effect and the stability are improved, the sealing cover 2 is convenient to assemble and disassemble, and the structure is reliable.

It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.

Claims

1. The high-tightness flange is characterized by comprising a flange component (1) and a sealing cover (2) covered on the outer side of the flange component (1), wherein the sealing cover (2) comprises a first cover (21) and a second cover (22), one end of the first cover (21) is hinged with one end of the second cover (22), the other end of the first cover (21) is detachably connected with the other end of the second cover (22), sealing air cushions (7) are respectively connected to the inner walls of the first cover (21) and the second cover (22), sealing air chambers are arranged in the sealing air cushions (7), the sealing air cushions (7) are wrapped on the two side end surfaces and the outer peripheral surface of the flange component (1), and the sealing air cushions (7) are in butt joint with the two side end surfaces and the outer peripheral surface of the flange component (1) to form sealing.

2. The flange with high tightness according to claim 1, wherein the sealing air cushion (7) comprises two side air cushions (71) and a middle air cushion (72) connected between the two side air cushions (71), the outer surfaces of the two side air cushions (71) are respectively abutted with two side end surfaces of the flange assembly (1), and the outer surface of the middle air cushion (72) is abutted with the outer peripheral surface of the flange assembly (1).

3. A high tightness flange as claimed in claim 2, characterized in that the outer surface of said side air cushion (71) is of a corrugated structure with irregularities.

4. A high tightness flange according to claim 2 or 3, characterized in that the middle cushion (72) is provided with an outwardly protruding bulge (721).

5. A high tightness flange according to claim 1, characterized in that the sealing cover (2) and the flange assembly (1) are fixedly connected by a plurality of connecting bolts (4).

6. A high-tightness flange as set forth in claim 5, wherein one end of the first sleeve cover (21) is hinged to one end of the second sleeve cover (22) through a hinge shaft, the other end of the second sleeve cover (22) extends outwards to form an extension part (221), and the extension part (221) is fixedly connected with the other end of the first sleeve cover (21) through a connecting bolt (4).

7. A high tightness flange according to claim 4, wherein said flange assembly (1) comprises a first flange member (11) and a second flange member (12) connected by bolts, and a gap between opposite end surfaces of said first flange member (11) and said second flange member (12) corresponds to a position of the boss (721).

8. The flange with high tightness according to claim 7, wherein the first flange member (11) and the second flange member (12) are provided with a first groove (111) and a second groove (121) respectively on two opposite end surfaces, the cross section structure of the first groove (111) is of a convex structure, and the first groove (111) and the second groove (121) are internally matched and clamped with a sealing ring (6).