CN110848484A

CN110848484A - Leak-proof fastening flange plate

Info

Publication number: CN110848484A
Application number: CN201911093973.3A
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 leakage-proof fastening flange plate, 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 with the same shape and structure are further arranged on the flange body, the flange covers are spliced into a hollow cylinder with the through hole in the center, a plurality of bolt holes are further formed in the flange covers, the number of the flange covers is two, the flange covers are in a semi-circular shape, a circular rubber gasket is further arranged between the flange bodies, and a plurality of through holes are formed in the gasket.

Description

Leak-proof fastening flange plate

Technical Field

The invention relates to the technical field of flange connection, in particular to a leakage-proof fastening flange plate.

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 ring flange can not bury in the underground for a long time for the ring flange of connecting the water pipe gets off for a long time, can frequently appear the condition of infiltration, also only wraps up the ring flange through the sticky tape during maintenance, can not solve the problem at all, and the cost of change is too big again, and is more complicated.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art and provides a leak-proof fastening flange plate which can prevent corrosion and water leakage.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a ring flange 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 that shape structure is the same on the flange body, a plurality of flange covers splice into a cavity and center have the cylinder of through-hole, the flange covers and still is equipped with the several bolt hole, before the flange body passes through bolted connection, adds earlier and establishes the flange cover and wraps up the flange body, then passes bolt hole and flange body with the bolt and connects.

Further, the number of the flange covers is two, the flange covers are semicircular, the number is minimum, the preferred scheme only needs two flange covers to be sleeved from two sides of the flange body, bolt holes in the flange covers correspond to bolt holes in the flange body, four bolt holes are arranged in the semicircular flange covers, and the existing flange plates are all connected through eight bolts.

Further, still be equipped with ring shape rubber gasket between the flange body, be equipped with the several on the gasket and perforate, it is the same that the bolt passes to perforate, and the gasket setting is between the flange body, and rubber materials is softer, and in the fastening, the clearance between the whole flange body can be filled to rubber materials to can be spilled over by the extrusion, the sealed effect of effectual realization.

Furthermore, a sealing ring is arranged on the hollow side wall of the flange cover, namely the side surface of the flange body is connected with the sealing ring, so that water leakage is prevented.

Furthermore, the number of the bolt holes formed in the cylinder formed by splicing the flange covers is 8, and one flange plate is generally connected through 8 bolts.

Furthermore, the side edge of the flange cover is provided with mutually matched step surfaces, and compared with a plane, the step surfaces improve the sealing effect.

Further, the flange cover is made of stainless steel and is arranged conventionally.

Furthermore, the height of the hollow flange cover is 6 cm-10 cm, and the thickness of two flanges is just accommodated in the hollow flange.

The invention has the beneficial effects that: the flange is characterized in that the flange body is provided with a rubber gasket, the rubber gasket is arranged between the flange bodies, and the sealing ring is arranged on the side wall of the flange cover.

Drawings

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

FIG. 2 is a perspective view of the flange cover alone;

in the figure: 1-flange body, 11-through hole, 2-flange cover, 21-bolt hole, 3-gasket, 31-perforation, 4-sealing washer.

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 to 2: the utility model provides a ring flange 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 that the shape structure is the same on the flange body 1, a plurality of flange covers 2 splice into a cavity and the center has the cylinder of through-hole 11, still be equipped with several bolt hole 21 on the flange cover 2, flange cover 2 quantity is two, and flange cover 2 is half-circular ring shape, still is equipped with ring shape rubber gasket 3 between the flange body 1, be equipped with the several on the gasket 3 and perforate 31, be equipped with sealing washer 4 on the 2 cavity lateral wall of flange cover, the quantity of bolt hole 21 is 8 on a cylinder is spliced into to a plurality of flange covers 2, and flange cover 2 side is equipped with the step face of mutually supporting, and flange cover 2 material is the stainless steel, and flange cover 2 hollow height is 6cm ~.

The working principle and the using method of the invention are as follows: the two semicircular flange covers 2 are additionally arranged on the existing flange body 1, the two flange covers 2 are identical in shape and structure and can be spliced into a hollow cylinder with a through hole 11 in the center, the through hole 11 is used for penetrating a water pipe, and a bolt originally connected with a flange plate can be connected only by penetrating through a bolt hole 21 in the flange cover 2, the flange body 1 and a gasket 3; the gasket 3 and the sealing ring 4 of the invention play a good role in sealing the flange plate, and the flange cover 2 fixes the whole flange body 1.

The invention firstly fixes two flange bodies 1 at the end of a water pipe to be connected, a gasket 3 is clamped between the two flange bodies 1, a through hole 31 on the gasket 3 is aligned with a hole for a bolt to pass through on the flange body 1, a sealing ring 4 is sleeved on the periphery of the flange body 1, then two flange covers 2 are sleeved in from two sides of the flange body 1, the flange body 1 is completely covered, a bolt hole 21 on the flange cover 2 corresponds to the hole on the flange body 1, then a screw rod passes through the bolt hole 21, the flange body 1 and the gasket 3, and the other side of the flange cover 2 is screwed with a nut.

Claims

1. The utility model provides a ring flange 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), its characterized in that: the flange is characterized in that the flange body (1) is further provided with at least two flange covers (2) which are the same in shape and structure, the flange covers (2) are spliced into a hollow cylinder with a through hole (11) in the center, and the flange covers (2) are further provided with a plurality of bolt holes (21).

2. A leak-tight flange as set forth in claim 1 wherein: the number of the flange covers (2) is two, and the flange covers (2) are semicircular.

3. A leak-tight flange as set forth in claim 1 wherein: still be equipped with ring shape rubber gasket (3) between flange body (1), be equipped with several perforation (31) on gasket (3).

4. A leak-tight flange as set forth in claim 1 wherein: and a sealing ring (4) is arranged on the hollow side wall of the flange cover (2).

5. A leak-tight flange as set forth in claim 1 wherein: the number of the bolt holes (21) on the cylinder spliced by the plurality of flange covers (2) is 8.

6. A leak-tight flange as claimed in any one of claims 1 to 5, wherein: and step surfaces matched with each other are arranged on the side edges of the flange cover (2).

7. A leak-tight flange as claimed in any one of claims 1 to 5, wherein: the flange cover (2) is made of stainless steel.

8. A leak-tight flange as claimed in any one of claims 1 to 5, wherein: the hollow height of the flange cover (2) is 6 cm-10 cm.