CN220956390U

CN220956390U - Flange connection structure

Info

Publication number: CN220956390U
Application number: CN202322647595.7U
Authority: CN
Inventors: 熊彪; 丁正国; 余欣; 童传胜
Original assignee: Wuhan Lutai Flange Machinery Manufacturing Co ltd
Current assignee: Wuhan Lutai Flange Machinery Manufacturing Co ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-05-14
Anticipated expiration: 2033-09-27

Abstract

The utility model discloses a flange connection structure which comprises a bottom plate, wherein a movable plate is rotatably arranged at the top end of the bottom plate, an outer connection hole is formed in the top end of the inside of the movable plate, a fixing bolt is connected to the inner threads of the outer connection hole, an inner thread groove is formed in the top end of the movable plate, a protective cover is arranged in the inner thread groove, outer threads are uniformly arranged below the outer part of the protective cover, a polyurethane layer is arranged on the outer surface of the protective cover, a polyethylene layer is arranged on the outer surface of the polyurethane layer, an anti-corrosion paint layer is arranged on the outer surface of the polyethylene layer, a second flange is arranged at the bottom end of the inside of the bottom plate, an elastic gasket is arranged at the top end of the second flange, and a first flange is arranged at the top end of the elastic gasket. The utility model has the beneficial effects that: according to the utility model, the movable plate, the fixing bolt, the protective cover, the external threads and the internal thread groove are arranged, and the protective cover is arranged in the internal thread groove, so that the fixing bolt can be conveniently protected, and the service life of the fixing bolt is effectively prolonged.

Description

Flange connection structure

Technical Field

The utility model relates to the technical field of flanges, in particular to a flange connection structure.

Background

The flange connection is a detachable joint which is used for fixing two pipelines, pipe fittings or devices on one flange plate, then adding a flange pad between the two flange plates, and finally tightening the two flange plates by bolts to tightly combine the two flange plates. In the field of mechanical design, however, there are a large number of flange connections for the transmission of fluid media, wherein the flange connection surfaces must be able to maintain good connection and tightness in the fluid medium under pressure.

The present flange connection structure, as described in the patent of publication number CN208804359U, comprises: the novel flange comprises a first flange and a second flange, wherein an elastic gasket is arranged between the first flange and the second flange, a plurality of bottom plates are uniformly distributed on the side face of the first flange, a movable plate is arranged at the end part of the bottom plate, one end of the movable plate is hinged to the bottom plate through a connecting piece, a pressing plate capable of being pressed at the top of the second flange is arranged at the other end of the movable plate, the pressing plate is vertically connected with the movable plate, and the pressing plate is fixedly connected with the second flange through bolts. The utility model has the characteristics of simple structure, firm connection, convenient disassembly and assembly, and the like.

Aiming at the prior art, the device is considered to be connected with the pressing plate and the flange through the bolts, the environment where some flange structures work is outdoor, and after the bolts work for a long time, the bolts are easily eroded by external rainwater, so that the bolts are not detached.

Therefore, there is a need to provide a flange connection structure for solving the above-mentioned technical problems.

Disclosure of utility model

The utility model aims to provide a flange connection structure, which is used for solving the problems that in the prior art, a device is provided for connecting a pressing plate and a flange through bolts, the working environment of some flange structures is outdoor, and after the bolts work for a long time, the bolts are easily corroded by external rainwater, so that the bolts are not detached.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a flange joint structure, includes the bottom plate, the top rotation of bottom plate is provided with the fly leaf, the external connection hole has been seted up on the inside top of fly leaf, the internal thread connection of external connection hole has fixing bolt, the internal thread groove has been seted up on the top of fly leaf, the inside in internal thread groove is provided with the protection casing, the outside below of protection casing evenly is provided with the external screw thread.

Through adopting above-mentioned technical scheme, through the inside with the protection casing installation internal thread groove, can conveniently protect fixing bolt, the effectual life who prolongs fixing bolt.

Preferably, a rubber layer is arranged at the top end inside the movable plate.

Through adopting above-mentioned technical scheme, can make the compacter of being connected between fly leaf and the first flange to make first flange and second flange connection's more firm.

Preferably, the bottom inside the bottom plate is provided with the second flange, the top of second flange is provided with the elastic gasket, the top of elastic gasket is provided with first flange.

Through adopting above-mentioned technical scheme, can make the compacter of being connected between first flange and the second flange, prevent to take place to remove during the installation.

Preferably, the outer surface of the protective cover is provided with a polyurethane layer, the outer surface of the polyurethane layer is provided with a trimeric ethylene layer, and the outer surface of the trimeric ethylene layer is provided with an anti-corrosion paint layer.

Through adopting above-mentioned technical scheme, through being provided with anticorrosive paint layer, trimerization ethylene layer and polyurethane layer at the surface of protection casing, can improve the anticorrosive performance of protection casing, the effectual life who prolongs the protection casing.

Preferably, a protective pad is arranged at the top end inside the protective cover.

Through adopting above-mentioned technical scheme, can protect fixing bolt.

Preferably, the protective cover is arranged right above the outer connecting hole.

Through adopting above-mentioned technical scheme, can make the protection casing can be abundant protect the inside bolt of external connecting hole, avoid outside rainwater to erode fixing bolt as far as possible.

Preferably, the external thread and the internal thread groove are meshed with each other.

Through adopting above-mentioned technical scheme, can conveniently fix the protection casing.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Through being provided with fly leaf, fixing bolt, protection casing, external screw thread and internal screw thread groove, through installing the protection casing in the inside of internal screw thread groove, can conveniently protect fixing bolt, effectual fixing bolt's life has been prolonged;

(2) Through being provided with protection casing, anticorrosive paint layer, trimerization ethylene layer and polyurethane layer, through being provided with anticorrosive paint layer, trimerization ethylene layer and polyurethane layer at the surface of protection casing, can improve the anticorrosive performance of protection casing, the effectual life who prolongs the protection casing.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the movable plate of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

Fig. 4 is a schematic view of the internal structure of the protective cover of the present utility model.

Reference numerals in the drawings: 1. a movable plate; 2. a first flange; 3. an elastic pad; 4. a bottom plate; 5. a second flange; 6. a fixing bolt; 7. a protective cover; 8. a rubber layer; 9. an outer connection hole; 10. an external thread; 11. an internal thread groove; 12. an anticorrosive paint layer; 13. a layer of ethylene trimer; 14. a polyurethane layer.

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.

The utility model is further described in detail below by combining with the attached drawings 1 and combining with the drawings 2 to 4, the flange connection structure comprises a bottom plate 4, the bottom plate 4 can provide bearing capacity, the top end of the bottom plate 4 is rotatably provided with a movable plate 1, the movable plate 1 and the bottom plate 4 are connected through a hinge, thereby facilitating the rotation of the movable plate 1, the top end of the inside of the movable plate 1 is provided with an external connecting hole 9, the internal thread of the external connecting hole 9 is connected with a fixing bolt 6, the top end of the inside of the movable plate 1 is provided with a rubber layer 8, the top end of the inside of the movable plate 1 is provided with an internal thread groove 11, the inside of the internal thread groove 11 is provided with a protective cover 7, the protective cover 7 can shield external rain and snow, the protective cover 7 is arranged right above the external connecting hole 9, the protective cover 7 can fully protect the internal bolt of the external connecting hole 9, so that the external rain water can erode the fixing bolt 6, the service life of the fixing bolt 6 is effectively prolonged, thereby facilitating the disassembly and assembly of the fixing bolt 6 by workers, the protective cover 7 is provided with a protective cover pad, the protective cover 7 can be meshed with the internal thread groove 11, the internal thread 10 can be meshed with the internal thread 11, and the internal thread 11 can be conveniently meshed with the internal thread 11.

The bottom inside the bottom plate 4 is provided with second flange 5, the top of second flange 5 is provided with the elastic gasket 3, the top of elastic gasket 3 is provided with first flange 2, can make the compacter of connecting between first flange 2 and the second flange 5, prevent to take place to remove during the installation, and the inboard thickness of rubber layer 8 is greater than outside thickness, can be convenient for press fly leaf 1 on first flange 2 like this, can make the compacter of being connected between fly leaf 1 and the first flange 2 through rubber layer 8, thereby make the more firm of first flange 2 and second flange 5 connection, and the bolt hole has been seted up at the top of first flange 2, through passing external connection hole 9 with fixing bolt 6 and inserting the inside of bolt hole, can screw in fixing bolt 6 more conveniently like this, make first flange 2 and second flange 5 each other can not take place to slide, and improve the installation effectiveness, and when need dismantling the device, only need take out fixing bolt 6, with fly leaf 1 and first flange 2 separation can, the dismouting is very convenient.

Referring to fig. 4, the outer surface of the protective cover 7 is provided with a polyurethane layer 14, the outer surface of the polyurethane layer 14 is provided with a trimeric ethylene layer 13, the outer surface of the trimeric ethylene layer 13 is provided with an anti-corrosion paint layer 12, and the outer surface of the protective cover 7 is provided with the polyurethane layer 14, the trimeric ethylene layer 13 and the anti-corrosion paint layer 12, so that the anti-corrosion performance of the protective cover 7 can be improved, the service life of the protective cover 7 is effectively prolonged, and the fixing bolt 6 can be better protected.

Working principle:

The elastic gasket 3 is arranged between the first flange 2 and the second flange 5, so that the first flange 2 and the second flange 5 can be prevented from moving when being installed; then the movable plate 1 is rotated to be connected with the first flange 2, the movable plate 1 is pressed on the top of the first flange 2, and then the movable plate 1 is firmly connected with the first flange 2 through the fixing bolts 6, so that the structure is simple, and the connection is firm; when the movable plate is detached, the movable plate 1 is separated from the first flange 2 only by taking out the fixing bolts 6, so that the movable plate is very convenient to detach;

by rotating the protective cover 7, the protective cover 7 can be arranged in the internal thread groove 11 by utilizing the engagement of the external thread 10 and the internal thread groove 11 on the protective cover 7, so that the fixing bolt 6 can be conveniently protected, the fixing bolt 6 is prevented from being corroded by external rainwater as much as possible, the service life of the fixing bolt 6 is effectively prolonged, and therefore, the fixing bolt 6 can be conveniently disassembled and assembled by workers;

Through being provided with this polyurethane layer 14, trimeric ethylene layer 13 and anticorrosive paint layer 12 at the surface of protection casing 7, can improve the anticorrosive performance of protection casing 7, the effectual life who prolongs protection casing 7 to can be better protect fixing bolt 6.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A flange connection structure comprising a base plate (4), characterized in that: the novel anti-theft protection device is characterized in that the movable plate (1) is rotatably arranged at the top end of the bottom plate (4), an outer connecting hole (9) is formed in the top end of the inner portion of the movable plate (1), a fixing bolt (6) is connected with the inner thread of the outer connecting hole (9), an inner thread groove (11) is formed in the top end of the movable plate (1), a protection cover (7) is arranged in the inner thread groove (11), and external threads (10) are uniformly arranged below the outer portion of the protection cover (7).

2. A flange connection according to claim 1, wherein: the top end inside the movable plate (1) is provided with a rubber layer (8).

3. A flange connection according to claim 1, wherein: the bottom inside of bottom plate (4) is provided with second flange (5), the top of second flange (5) is provided with elastic gasket (3), the top of elastic gasket (3) is provided with first flange (2).

4. A flange connection according to claim 3, wherein: the outer surface of protection casing (7) is provided with polyurethane layer (14), the surface on polyurethane layer (14) is provided with trimer ethylene layer (13), the surface on trimer ethylene layer (13) is provided with anticorrosive paint layer (12).

5. A flange connection according to claim 4, wherein: the top inside the protective cover (7) is provided with a protective pad.

6. A flange connection according to claim 1, wherein: the protective cover (7) is arranged right above the outer connecting hole (9).

7. A flange connection according to claim 1, wherein: the external thread (10) and the internal thread groove (11) are meshed with each other.