CN210440743U

CN210440743U - Thread engagement flange

Info

Publication number: CN210440743U
Application number: CN201921112237.3U
Authority: CN
Inventors: 许勇
Original assignee: Jiangsu Feida Stainless Steel Co ltd
Current assignee: Jiangsu Feida Stainless Steel Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-01
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a thread engagement flange relates to flange technical field, for solving the effect that current flange generally only played the connection, can't satisfy the high-pressure reciprocating motion among the special environment, problem that compressive property is general. One side of first ring flange is provided with the second ring flange, the inside of first ring flange and second ring flange all is provided with connect the via hole, connect the via hole's inside is provided with the bolt, the inside of bolt is provided with the connecting rod, and connecting rod and bolt structure as an organic whole, the one end of connecting rod is provided with lock nut, the central point of first ring flange and second ring flange puts and all is provided with annular boss, the inside of annular boss is provided with the screw, be provided with the screw on the inner wall of screw, one side of first ring flange and second ring flange all is provided with connecting tube, be provided with two lip sealing washers between first ring flange and the second ring flange, be provided with the outer lip on the outer wall of two lip sealing washers.

Description

Thread engagement flange

Technical Field

The utility model relates to a flange technical field specifically is a thread engagement flange.

Background

A flange, also known as a flange collar or flange. The flange is a part for connecting the shafts and is used for connecting pipe ends; there are also flanges on the inlet and outlet of the equipment for the connection between two pieces of equipment, such as reducer flanges. The flange connection or flange joint is a detachable connection which is formed by connecting a flange, a gasket and a bolt with each other to form a group of combined sealing structures. The pipeline flange is a flange for piping in a pipeline device, and is used on equipment to be an inlet and outlet flange of the equipment. The flanges are provided with holes, and the two flanges are tightly connected through bolts. The flanges are sealed with gaskets. The flange is divided into a threaded connection flange, a welding flange and a clamping flange. The flanges are used in pairs, the low-pressure pipeline can be screwed with the flanges, and the flanges are welded under the pressure of more than four kilograms. And a sealing gasket is arranged between the two flanges and then is fastened by bolts. The flanges of different pressures have different thicknesses and they use different bolts. The thread flange is suitable for thread locking and sealing of industrial and civil pipes such as fire fighting, coal gas, cold and hot water, air pressure pipes, oil pipes, hydraulic pipes and the like.

However, the existing flange only plays a role in connection, cannot meet high-pressure reciprocating motion in a special environment, and has general pressure resistance; thus, the present need is not met, and a threaded engagement flange has been proposed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thread engagement flange to solve the effect that the current flange that proposes in the above-mentioned background art generally only played the connection, can't satisfy the high pressure reciprocating motion among the special environment, problem that compressive property is general.

In order to achieve the above object, the utility model provides a following technical scheme: a thread engagement flange comprises a first flange plate, a second flange plate is arranged on one side of the first flange plate, the first flange plate and the second flange plate are both provided with connecting through holes, bolts are arranged in the connecting through holes, connecting rods are arranged in the bolts, the connecting rod and the bolt are integrated, one end of the connecting rod is provided with a locking nut, the central positions of the first flange plate and the second flange plate are both provided with an annular boss, screw holes are arranged inside the annular boss, threads are arranged on the inner wall of each screw hole, connecting pipelines are arranged on one sides of the first flange plate and the second flange plate, be provided with two lip sealing washers between first ring flange and the second ring flange, be provided with the outer lip on the outer wall of two lip sealing washers, be provided with the lip groove on the inner wall of outer lip, be provided with the inner lip on the inner wall of lip groove.

Preferably, the first flange plate is in threaded connection with the second flange plate through bolts.

Preferably, a flat sealing gasket is arranged at the joint of the locking nut and the connecting rod.

Preferably, a spring washer is arranged on one side of the flat sealing washer, and the spring washer and the flat sealing washer are on the same horizontal line.

Preferably, the lip groove is disposed between the outer lip and the inner lip.

Preferably, the first flange plate and the second flange plate are both in threaded connection with the connecting pipeline through screw holes.

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

1. the utility model discloses a set up the two lip sealing washers between first ring flange and second ring flange, when the pipeline internal pressure risees, the interior outer lip of two lip sealing washers can produce elastic deformation and stretch, makes the sealing washer and the length of sealed face contact constantly increase, and until the whole axial length of sealing washer and sealed face contact, ensured that the junction can not take place to reveal yet in high-pressure environment, improved the compressive property of flange.

2. The flat sealing washer and the spring washer are arranged at the joint of the nut, so that the contact area of the flat sealing washer can be increased, the pressure can be dispersed, and the surface of the connected piece can be protected from being scratched by the nut; the spring washer can give nut pressure, increases the frictional force between nut and the bolt, plays locking effect. The two have synergistic effect, and the service life of the flange can be effectively prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a partial structure of the first flange plate of the present invention;

fig. 3 is a partial structural schematic view of the double-lip sealing ring of the present invention;

in the figure: 1. a first flange plate; 2. a second flange plate; 3. a bolt; 4. a connecting rod; 5. a flat sealing gasket; 6. a spring washer; 7. locking the nut; 8. a double-lip seal ring; 801. an outer lip; 802. a lip groove; 803. an inner lip; 9. connecting a pipeline; 10. a connecting through hole; 11. an annular boss; 12. a screw hole; 13. and (4) threading.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a thread engagement flange comprises a first flange plate 1, a second flange plate 2 is arranged on one side of the first flange plate 1, connecting through holes 10 are formed in the first flange plate 1 and the second flange plate 2, bolts 3 are arranged in the connecting through holes and used for fixing the first flange plate 1 and the second flange plate 2, connecting rods 4 are arranged in the bolts 3, the connecting rods 4 and the bolts 3 are of an integral structure, locking nuts 7 are arranged at one ends of the connecting rods 4, annular bosses 11 are arranged at the central positions of the first flange plate 1 and the second flange plate 2, screw holes 12 are formed in the annular bosses 11 and used for being in threaded connection with connecting pipelines 9, threads 13 are arranged on the inner walls of the screw holes 12, the connecting pipelines 9 are arranged on one sides of the first flange plate 1 and the second flange plate 2, and a double-lip sealing ring 8 is arranged between the first flange plate 1 and the second flange plate 2, the double-lip sealing ring 8 plays a role in sealing and leakage prevention, an outer lip 801 is arranged on the outer wall of the double-lip sealing ring 8, a lip groove 802 is arranged on the inner wall of the outer lip 801, and an inner lip 803 is arranged on the inner wall of the lip groove 802.

Further, first ring flange 1 passes through bolt 3 and 2 threaded connection of second ring flange, and bolt 3 has played the effect of fixed first ring flange 1 and 2 of second ring flange, adopts threaded connection's mounting means, simple structure, connection are reliable, easy dismounting.

Further, a flat sealing washer 5 is installed at the joint of the locking nut 7 and the connecting rod 4, the flat sealing washer 5 can increase the contact area, disperse pressure and protect the surface of a connected piece from being scratched by the nut.

Further, one side of the flat sealing washer 5 is provided with a spring washer 6, the spring washer 6 and the flat sealing washer 5 are on the same horizontal line, the spring washer 6 can give pressure to the nut, the friction force between the nut and the bolt 3 is increased, and the anti-loosening effect is achieved.

Further, the lip groove 802 is disposed between the outer lip 801 and the inner lip 803, and the lip groove 802 may play a certain role of cushioning when subjected to a reciprocating pressure.

Further, first ring flange 1 and second ring flange 2 all are through screw 12 and connecting tube 9 threaded connection, compare in conventional welded connection, adopt threaded connection installation pipeline simpler, the maintenance is also more convenient.

The working principle is as follows: when in use, the first flange plate 1 and the second flange plate 2 are respectively installed on two pipelines to be connected, the two pipelines are butted, the first flange plate 1 and the second flange plate 2 are firmly fixed together by using bolts 3 after the two pipelines are butted, and the double-lip sealing ring 8 is sleeved on the joint, so that the installation between the pipelines can be completed, the flat sealing ring 5 and the spring washer 6 are arranged at the locking nut 7, the contact area can be increased by the cooperation of the flat sealing ring 5 and the spring washer 6, the pressure is dispersed, the surface of a connected piece is protected from being scratched by the nut, the anti-loosening effect is achieved, when the pressure in the pipeline rises, the lip mouth can generate elastic deformation to stretch, the contact length between the sealing ring and the sealing surface is continuously increased until the whole axial length of the sealing ring is contacted with the sealing surface, and the joint is ensured not to leak in a high-pressure environment, the pressure resistance of the flange is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 threaded engagement flange comprising a first flange plate (1), characterized in that: a second flange plate (2) is arranged on one side of the first flange plate (1), a connecting through hole (10) is formed in each of the first flange plate (1) and the second flange plate (2), a bolt (3) is arranged in each of the connecting through holes, a connecting rod (4) is arranged in each of the bolts (3), the connecting rod (4) and the bolt (3) are of an integral structure, a locking nut (7) is arranged at one end of each connecting rod (4), an annular boss (11) is arranged at the central position of each of the first flange plate (1) and the second flange plate (2), a screw hole (12) is formed in each of the annular bosses (11), a thread (13) is arranged on the inner wall of each screw hole (12), a connecting pipeline (9) is arranged on one side of each of the first flange plate (1) and the second flange plate (2), and a double-lip sealing ring (8) is arranged between the first flange plate (1) and the second flange plate (, be provided with outer lip (801) on the outer wall of two lip sealing washer (8), be provided with lip groove (802) on the inner wall of outer lip (801), be provided with inner lip (803) on the inner wall of lip groove (802).

2. A threaded engagement flange according to claim 1 wherein: the first flange plate (1) is in threaded connection with the second flange plate (2) through bolts (3).

3. A threaded engagement flange according to claim 1 wherein: and a flat sealing gasket (5) is arranged at the joint of the locking nut (7) and the connecting rod (4).

4. A threaded engagement flange according to claim 3 wherein: and a spring washer (6) is arranged on one side of the flat sealing washer (5), and the spring washer (6) and the flat sealing washer (5) are on the same horizontal line.

5. A threaded engagement flange according to claim 1 wherein: the lip groove (802) is disposed between an outer lip (801) and an inner lip (803).

6. A threaded engagement flange according to claim 1 wherein: the first flange plate (1) and the second flange plate (2) are in threaded connection with the connecting pipeline (9) through screw holes (12).