CN110848235A

CN110848235A - Rust-resistant tight flange device

Info

Publication number: CN110848235A
Application number: CN201911094305.2A
Authority: CN
Inventors: 谭俊
Original assignee: Hunan Tianxingjian Energy Management Co Ltd
Current assignee: Hunan Tianxingjian Energy Management Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-02-28

Abstract

The invention discloses a flange device for rust-proof fastening, which belongs to the technical field of flange connection and comprises a flange body, wherein the flange body is of a ring structure, a through hole is formed in the center of the flange body, at least two flange covers are further arranged on the flange body, the flange covers are identical in shape and structure and form a hollow cylinder with the through hole in the middle, two flange covers are arranged on the flange body, and the flange covers are semicircular.

Description

Rust-resistant tight flange device

Technical Field

The invention relates to the technical field of flange connection, in particular to a flange device for rust-proof fastening.

Background

Flange connection is a detachable joint which is formed by fixing two pipelines, pipe fittings or equipment on a flange respectively, then adding a flange pad between the two flanges, and finally tightening the two flanges by bolts to tightly combine the two flanges.

Flange connection is an important connection mode for pipeline construction, and flange types are divided into a threaded flange, a welding flange and a loose flange according to the fixing mode of the flange and a pipeline; according to the sealed face form, can divide into smooth sliding type, unsmooth formula, tongue-and-groove formula, lens formula and trapezoidal slot type, general low pressure minor diameter is with the screw flange, high pressure and low pressure major diameter are with welding flange, the thickness and the connecting bolt diameter and the quantity of the ring flange of different pressure are different, according to the different grades of pressure, the flange pad also has different materials, all have from low pressure asbestos pad, high pressure asbestos pad and tetrafluoro pad to the metal pad, flange joint convenient to use can bear great pressure, in industrial pipeline, flange joint's use is very extensive, for example in indoor fire hydrant water supply system, the connection of all kinds of valves and pipelines such as butterfly valve, gate valve, check valve.

At present, the flange plate is exposed outside and easy to rust, particularly for underground water heating engineering, a water pipe which is embedded underground is long, flanges are inevitably needed to be connected, the flanges are easy to rust, the service time is short, and replacement and maintenance are complex.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the corrosion-resistant flange device for rust-proof fastening is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a flange device of leak protection fastening, includes the flange body, and the flange body is the ring structure, and flange body center is equipped with the through-hole, still be equipped with two at least flange covers on the flange body, a plurality of flange cover shape structures are the same to constitute a cylinder that has the through-hole in the middle of cavity, a cylinder that has the through-hole is constituteed to a plurality of flange covers, just wraps up whole flange body, and the through-hole is used for the water pipe to pass, must set up.

Furthermore, be equipped with two flange covers on the flange body, the flange cover is the semicircle ring shape, and the annular quantity of semicircle is minimum, and the flange cover is covered from flange body side, can splice into a complete cavity and the centre has the cylinder of through-hole.

Further, the hollow height of the flange cover is 8 cm-14 cm, and the thickness of the two flange bodies or the protruding part of the bolt is added.

Further, the flange device further comprises a semicircular gasket arranged on the back of the flange body, wherein one gasket is provided with four hexagonal prism bolt clamping holes, and the gasket is arranged on the flange body and used for filling a gap formed by protruding bolts on the flange body and preventing air or water in the gap from accelerating the corrosion of the flange body.

Further, the thickness of the gasket is not less than the thickness of the nut for flange body connection, and is preferably equal to the thickness of the nut for flange body connection.

Furthermore, the gasket material is a rubber material, and rubber cannot corrode, so that the gasket material belongs to an ideal material.

Further, the fixed crisscross fixed nut that is equipped with in flange cover both sides, fixed nut are used for wearing to establish the screw rod, and the purpose is connected two flange covers, and the mode of connecting can also be other, for example with fixed nut replacement for the ring, it is equally can to pass the round bar between the ring.

Furthermore, step surfaces which are matched with each other are arranged on two sides of the flange cover, so that the sealing performance is further improved.

Further, the flange body side is equipped with the sealing rubber piece, live with whole flange body parcel with rubber materials.

The invention has the beneficial effects that: the flange cover is additionally arranged on the existing flange body, so that the flange body is effectively isolated from the external connection, the flange is prevented from being corroded and rusted, the service life is effectively prolonged, and the problem of water leakage is solved.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic view of the entire flange cover of the present invention;

FIG. 3 is a perspective view of the flange cover alone;

in the figure: the flange comprises 1-a flange body, 11-a through hole, 2-a flange cover, 21-a fixing nut, 3-a gasket and 31-a bolt clamping hole.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the figures, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "over" a second feature may be directly or diagonally over the first feature or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" a second feature may be that the first feature is directly under or obliquely under the second feature, or simply that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the terms "embodiment," "specific embodiment," "example" or "specific example" or the like are intended to 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Referring to FIGS. 1-3: the utility model provides a flange device of leak protection fastening, includes flange body 1, and flange body 1 is the ring structure, and flange body 1 center is equipped with through-hole 11, still be equipped with two at least flange covers 2 on the flange body 1, a plurality of flange covers 2 shape structures are the same to constitute a cavity and the centre and have the cylinder of through-hole 11, be equipped with two flange covers 2 on the flange body 1, flange cover 2 is half circular, and half circular's quantity is minimum, and flange cover 2 is established from flange body 1 side lid, can splice into a complete cavity and the centre has the cylinder of through-hole 11, the hollow height of flange cover 2 is 8cm ~14cm, the thickness of two flange bodies 1 or in addition the convex part of bolt.

The flange device is characterized by further comprising a semicircular gasket 3 arranged on the back of the flange body 1 through a gasket, wherein bolt clamping holes 31 of four hexagonal prisms are formed in one gasket 3, the gasket is arranged on the flange body 1 and used for filling a gap formed by protruding bolts on the flange body 1, air or water is prevented from being filled in the gap, corrosion of the flange body 1 is accelerated, the thickness of the gasket 3 is not less than that of a nut for connecting the flange body 1, the thickness of the nut is preferably equal to that of the gasket 3, and the gasket 3 is made of rubber materials.

The fixed crisscross fixing nut 21 that is equipped with in 2 both sides of flange cover, fixing nut 21 is used for wearing to establish the screw rod, and the purpose is connected two flange covers 2, and the mode of connection can also be other, for example with fixing nut 21 replacement one-tenth ring, pass between the ring the round bar equally can, 2 both sides of flange cover are equipped with the step face of mutually supporting, further improve sealing performance, 1 side of flange body is equipped with the sealing rubber piece, live whole flange body 1 parcel with rubber materials.

The working principle and the using method of the invention are as follows: two semi-circular's flange cowls 2 are connected through crisscross fixing nut 21, and the bolt on the flange body 1 is filled just to gasket 3, effective isolated air prevents that flange body 1 from rustting, and the material of flange cowling 2 adopts corrosion-resistant material best, can be rigid plastic, toughened glass or scribble anticorrosive paint's metal material etc..

When the flange plate fixing device needs to be used, two flange plates are connected through bolts, then the back of the flange body 1 is provided with a total of four gaskets 3, meanwhile, sealing rubber sheets can be arranged on the side edges of the two flange bodies 1, then the two flange covers 2 cover the whole flange plate, and then two screws penetrate through fixing nuts 21 on the flange covers 2 to be fixed.

Claims

1. The utility model provides a flange device of rust-resistant fastening, includes flange body (1), flange body (1) is the ring structure, and flange body (1) center is equipped with through-hole (11), its characterized in that: the flange body (1) is further provided with at least two flange covers (2), the flange covers (2) are identical in shape and structure, and a hollow cylinder with a through hole (11) in the middle is formed.

2. A rust-preventive fastening flange device according to claim 1, characterized in that: the flange is characterized in that two flange covers (2) are arranged on the flange body (1), and the flange covers (2) are semicircular.

3. A rust-preventive fastening flange device according to claim 2, characterized in that: the hollow height of the flange cover (2) is 8 cm-14 cm.

4. A rust-preventive fastening flange device according to claim 3, characterized in that: the flange device further comprises a semicircular gasket (3) arranged on the back of the flange body (1) in a cushioning mode, and four hexagonal prism bolt clamping holes (31) are formed in one gasket (3).

5. A rust-preventive fastening flange device according to claim 4, characterized in that: the thickness of the gasket (3) is not less than that of the nut for connecting the flange body (1).

6. A rust-preventive fastening flange device according to claim 5, characterized in that: the gasket (3) is made of rubber materials.

7. A rust-preventive fastening flange device according to any one of claims 1 to 6, characterized in that: staggered fixing screw caps (21) are fixedly arranged on two sides of the flange cover (2).

8. A rust-preventive fastening flange device according to any one of claims 1 to 6, characterized in that: and step surfaces matched with each other are arranged on two sides of the flange cover (2).

9. A rust-preventive fastening flange device according to any one of claims 1 to 6, characterized in that: and a sealing rubber sheet is arranged on the side edge of the flange body (1).