CN106499886B - A kind of multi-sealed cutting ferrule of combination - Google Patents

Abstract

The invention discloses a combined multiple sealing ferrule, which comprises a ferrule main body, an inner tube accommodating hole, an outer tube accommodating groove, an internal thread surface, an external thread surface, a first sealing groove, a first sealing ring, a second sealing groove, The second sealing ring, the inner step ring, the third sealing ring, the third sealing groove, and the fourth sealing ring. The invention can make the tube joint directly have multiple sealing effects without additional sealing device, integrated installation, strong matching, less prone to failures such as mistakes and leakage, good working condition, reasonable structure and convenient installation. Conducive to promotion and application.

Description

A combined multiple sealing ferrule

【Technical field】

The invention relates to the technical field of sealing pipe fittings, in particular to the technical field of combining multiple sealing ferrules.

【Background technique】

The pipe joint is a connection tool between pipes and a detachable connection point between components and pipes. Playing an indispensable role in pipe fittings, it is one of the two main components of hydraulic pipelines. Pipe joints are used for straight-line connections such as instruments, and the connection forms include socket welding or threaded connections. It is mainly used for small-diameter low-pressure pipelines, used for parts that need to be assembled and disassembled frequently, or used for final adjustment of pipelines using threaded pipe fittings. The structural form should adopt the metal surface contact sealing structure, and the structural form of the gasket seal is usually used in general pipelines for conveying water, oil, air, etc. There are many types of pipe joints. Commonly used pipe joints can generally be divided into two types: hard pipe joints and hose joints. According to the connection method of pipe joints and pipes, there are three types of hard pipe joints: flare type, ferrule type and welding type. The ferrule-type pipe joint is a sealed pipe joint suitable for non-corrosive or corrosive media such as oil, water, and gas. The specification requirements of the aluminum-plastic pipe used are relatively flexible. After being connected to the pipe, it has the characteristics of a firm connection. The sealing performance of the existing ferrule-type pipe joints is difficult to meet the needs of use. In the actual application process, it is often necessary to install additional sealing devices to assist the sealing, which increases the installation process, and due to matching operations and other reasons, it is easy to cause connection leakage, etc. Fault.

【Content of invention】

The purpose of the present invention is to solve the problems in the prior art, and propose a combination of multiple sealing ferrules, which can directly provide multiple sealing effects for the tube joints, without additional sealing devices, integrated installation, strong matching, and not easy Faults such as errors and leakages occur, the working condition is good, the structure is reasonable, and the installation is convenient. Conducive to promotion and application.

In order to achieve the above purpose, the present invention proposes a combined multiple sealing ferrule, which includes a ferrule body, an inner tube receiving hole, an outer tube receiving groove, an internal thread surface, an external thread surface, a first sealing groove, a first sealing ring, The second sealing groove, the second sealing ring, the inner step ring, the third sealing ring, the third sealing groove, and the fourth sealing ring, the main body of the ferrule is provided with an inner tube accommodating hole, and the side of the inner tube accommodating hole is The wall is provided with an internal thread surface, the middle part of the internal thread surface is provided with a first sealing groove, the first sealing ring is installed in the first sealing groove, and the bottom of the internal thread surface is provided with a second sealing groove. A second sealing ring is installed in the second sealing groove, the opening bottom of the second sealing groove is provided with an inner step ring, the outer surface of the main body of the ferrule is provided with an outer tube receiving groove, and the inner side of the outer tube receiving groove An external thread surface is provided on the wall, a third sealing groove is provided in the middle of the external thread surface, the third sealing ring is installed in the third sealing groove, and a fourth sealing ring is provided at the bottom of the outer tube receiving groove.

Preferably, the first sealing groove is horizontally arranged in the middle of the internal thread surface, the cross-sectional shape of the first sealing ring is circular, the exposed height of the first sealing ring is higher than the internal thread surface, and the first sealing ring A sealing ring is an elastic sealing ring.

Preferably, the inner stepped ring is a circular ring with a rectangular cross-section, the inner stepped ring is integrated with the main body of the ferrule, and the cross-sectional shape of the second sealing ring is elongated. The innermost side of the second sealing ring extends to the inner stepped ring.

Preferably, a sealing protruding ring is arranged on the innermost side of the second sealing ring. The two sealing rings are of one-piece structure.

Preferably, the cross-sectional shape of the third sealing ring is a square with a circular arc-shaped protrusion on the outside, the third sealing ring is fixedly arranged in the third sealing groove, and the cross-sectional shape of the fourth sealing ring is It is L-shaped, and the fourth sealing ring covers the bottom of the housing groove of the outer tube and the surface corresponding to the external thread surface.

Preferably, the second sealing ring, the third sealing ring and the fourth sealing ring are all elastic sealing rings, and the second sealing ring is fixedly arranged on the second sealing groove.

Beneficial effects of the present invention: the present invention combines ferrule main body, inner pipe accommodation hole, outer pipe accommodation groove, internal thread surface, external thread surface, first sealing groove, first sealing ring, second sealing groove, second sealing Ring, inner step ring, third sealing ring, third sealing groove, and fourth sealing ring are combined together. Through experimental optimization, the tube joint can directly have multiple sealing effects, without additional sealing device, integrated installation , strong matching, not prone to failures such as mistakes and leakage, good working condition, reasonable structure, and easy installation. Conducive to promotion and application.

The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

【Description of drawings】

Fig. 1 is a schematic structural diagram of a combined multiple sealing ferrule of the present invention.

In the figure: 1-ferrule main body, 2-inner tube accommodating hole, 3-outer tube accommodating groove, 4-internal thread surface, 5-external thread surface, 6-first sealing groove, 7-first sealing ring, 8 - the second sealing groove, 9 - the second sealing ring, 10 - the inner step ring, 11 - the third sealing ring, 12 - the third sealing groove, 13 - the fourth sealing ring, 14 - the sealing convex ring.

【Detailed ways】

Referring to Fig. 1, a combined multiple sealing ferrule of the present invention includes a ferrule body 1, an inner tube receiving hole 2, an outer tube receiving groove 3, an internal thread surface 4, an external thread surface 5, a first sealing groove 6, a first Sealing ring 7, second sealing groove 8, second sealing ring 9, inner step ring 10, third sealing ring 11, third sealing groove 12, fourth sealing ring 13, the ferrule main body 1 is provided with an inner tube Accommodating hole 2, an internal thread surface 4 is provided on the side wall of the inner tube accommodating hole 2, and a first sealing groove 6 is provided in the middle of the internal thread surface 4, and a first sealing groove 6 is installed in the first sealing groove 6 Ring 7, the bottom of the internal thread surface 4 is provided with a second seal groove 8, a second seal ring 9 is installed in the second seal groove 8, and an inner step ring 10 is provided at the bottom of the opening of the second seal groove 8 , the outer surface of the ferrule main body 1 is provided with an outer tube receiving groove 3, the inner wall of the outer tube receiving groove 3 is provided with an external thread surface 5, and the middle part of the external thread surface 5 is provided with a third sealing groove 12 , the third sealing ring 11 is installed in the third sealing groove 12, the fourth sealing ring 13 is arranged at the bottom of the outer tube receiving groove 3, and the first sealing groove 6 is horizontally arranged in the middle of the internal thread surface 4 , the cross-sectional shape of the first sealing ring 7 is circular, the exposed height of the first sealing ring 7 is higher than the internal thread surface 4, the first sealing ring 7 is an elastic sealing ring, and the inner step ring 10 is a horizontally arranged circular ring with a rectangular cross section. The inner stepped ring 10 is integrated with the ferrule body 1. The cross-sectional shape of the second sealing ring 9 is elongated. The second sealing ring 9 The innermost side of the ring 9 extends to the inner step ring 10, and the innermost side of the second sealing ring 9 is provided with a sealing convex ring 14, the cross-sectional shape of the sealing convex ring 14 is semicircular, and the sealing convex ring 14 is facing the internal thread surface 4, the sealing convex ring 14 is integrated with the second sealing ring 9, and the cross-sectional shape of the third sealing ring 11 is a square with a section of arc-shaped protrusion on the outside. The third sealing ring 11 is fixedly arranged in the third sealing groove 12, the cross-sectional shape of the fourth sealing ring 13 is L-shaped, and the fourth sealing ring 13 covers the bottom of the outer tube receiving groove 3 and the external thread surface 5 On the corresponding surface, the second sealing ring 9 , the third sealing ring 11 and the fourth sealing ring 13 are elastic sealing rings, and the second sealing ring 9 is fixedly arranged on the second sealing groove 8 .

Working process of the present invention:

In the present invention, the ferrule main body 1, the inner tube receiving hole 2, the outer tube receiving groove 3, the inner thread surface 4, the outer thread surface 5, the first sealing groove 6, the first sealing ring 7, the second sealing groove 8, the second sealing groove The second sealing ring 9, the inner step ring 10, the third sealing ring 11, the third sealing groove 12, and the fourth sealing ring 13 are combined together. Through experimental optimization, the tube joint can directly have multiple sealing effects without additional Adding a sealing device, integrated installation, strong matching, not prone to failures such as mistakes and leakage, good working condition, reasonable structure, and easy installation. Conducive to promotion and application.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention, and any solution after a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (6)

1. a kind of multi-sealed cutting ferrule of combination, it is characterised in that：It is accommodated including cutting ferrule main body (1), inner tube receiving hole (2), outer tube Slot (3), inner threaded surface (4), external screw thread face (5), the first seal groove (6), the first sealing ring (7), the second seal groove (8), second Sealing ring (9), interior step ring (10), third sealing ring (11), third seal groove (12), the 4th sealing ring (13), the cutting ferrule It is provided with inner tube receiving hole (2) in main body (1), inner threaded surface (4) is provided on the side wall of said inner tube receiving hole (2), it is described It is provided with the first seal groove (6) in the middle part of inner threaded surface (4), the first sealing ring (7), institute are installed in first seal groove (6) It states inner threaded surface (4) bottom and is provided with the second seal groove (8), the second sealing ring (9) is installed in second seal groove (8), The open bottom of second seal groove (8) is provided with interior step ring (10), and the lateral surface of the cutting ferrule main body (1) is provided with outside Pipe holding tank (3), is provided with external screw thread face (5) on the madial wall of the outer tube holding tank (3), in the middle part of the external screw thread face (5) It is provided with third seal groove (12), the third sealing ring (11) is mounted in third seal groove (12), the outer tube holding tank (3) bottom is provided with the 4th sealing ring (13).

2. a kind of multi-sealed cutting ferrule of combination as described in claim 1, it is characterised in that：First seal groove (6) is horizontal Middle part in inner threaded surface (4) is set, and the cross-sectional shape of first sealing ring (7) is circle, first sealing ring (7) Exposed height be higher than inner threaded surface (4), first sealing ring (7) be elastic seal ring.

3. a kind of multi-sealed cutting ferrule of combination as described in claim 1, it is characterised in that：The interior step ring (10) is transversal Face is rectangular horizontally disposed annulus, and the interior step ring (10) is an integral structure with cutting ferrule main body (1), described second The cross-sectional shape of sealing ring (9) is strip, and the most inner side of second sealing ring (9) extends on interior step ring (10).

4. a kind of multi-sealed cutting ferrule of combination as described in claim 1, it is characterised in that：Second sealing ring (9) is most Inside is provided with sealing bulge loop (14), and the cross-sectional shape of the sealing bulge loop (14) is semicircle, the sealing bulge loop (14) Face inner threaded surface (4), the sealing bulge loop (14) are an integral structure with the second sealing ring (9).

5. a kind of multi-sealed cutting ferrule of combination as described in claim 1, it is characterised in that：The cross of the third sealing ring (11) Cross sectional shape, which is outside, the rectangular of one section of arc-shaped convex, and the third sealing ring (11) is fixed at third seal groove (12) in, the cross-sectional shape of the 4th sealing ring (13) is L-shaped, and the 4th sealing ring (13) is covered in outer tube holding tank (3) on bottom and external screw thread face (5) corresponding surface.

6. a kind of multi-sealed cutting ferrule of combination as described in claim 1, it is characterised in that：Second sealing ring (9), third Sealing ring (11), the 4th sealing ring (13) are elastic seal ring, and second sealing ring (9) is fixed at the second seal groove (8) on.