CN217603560U

CN217603560U - Union joint assembly

Info

Publication number: CN217603560U
Application number: CN202221936223.5U
Authority: CN
Inventors: 胡傲雷; 张茜茜; 胡云蕾; 胡良飞
Original assignee: Wenzhou Yihu Industrial Co ltd
Current assignee: Wenzhou Yihu Industrial Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-10-18
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses a by connecting subassembly wantonly, including threaded connection, the nut, seal gasket and area shoulder joint, seal gasket includes sealed taper washer, external seal plain washer and interior seal plain washer, the both ends difference fixed connection external seal plain washer and interior seal plain washer of sealed taper washer, be equipped with the awl mesa on the area shoulder joint, the last taper hole face that is equipped with of threaded connection, sealed taper washer is located between awl mesa and the taper hole face, can strengthen the sealing performance by connecting the subassembly wantonly, the maximum operating pressure who is suitable for has been improved, circumference distributes on the interior terminal surface of area shoulder joint has a plurality of location projections, be equipped with on threaded connection's the inner terminal surface with location projection complex locating hole, take shoulder joint and threaded connection to dock through location projection and locating hole, difficult circumferential direction causes the wearing and tearing of seal gasket when the nut is connected.

Description

Union joint assembly

Technical Field

The utility model relates to a pipeline connects technical field, especially relates to a by wanting joint Assembly.

Background

The pipe fitting is added when the pipeline is installed beyond a certain length so as to be convenient to disassemble and assemble during pipeline maintenance, and the pipe fitting consists of a threaded joint, a nut, a sealing gasket and a connector with a shoulder. The common union is suitable for the condition that the working pressure of a medium in a pipeline is less than 0.6MPa, has poor sealing performance, and is easy to cause abrasion to a sealing gasket when a screw is screwed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide by wanting the joint Assembly, sealing performance is higher, is difficult to cause wearing and tearing to seal gasket when the screw thread screws up moreover.

The utility model provides a technical scheme that its technical problem adopted: the sealing gasket is positioned between the threaded connector and the shoulder connector, the shoulder connector is sleeved with the nut, the nut is connected with the threaded connector in a threaded manner to fix the shoulder connector, the sealing gasket comprises a sealing conical gasket, an outer sealing flat gasket and an inner sealing flat gasket, two ends of the sealing conical gasket are respectively and fixedly connected with the outer sealing flat gasket and the inner sealing flat gasket, the shoulder connector is provided with a conical table surface, the threaded connector is provided with a conical hole surface, the sealing conical gasket is positioned between the conical table surface and the conical hole surface, a plurality of positioning convex columns are circumferentially distributed on the inner end surface of the shoulder connector, positioning holes matched with the positioning convex columns are formed in the inner end surface of the threaded connector, and through holes for the positioning convex columns to pass through are formed in the outer sealing flat gasket.

For further improvement, the inner bore diameters of the threaded joint, the shouldered joint and the inner sealing flat washer are equal.

Further perfect, be equipped with big-end-up's first V type sealing washer outside on the hole of interior sealed plain washer, all be equipped with on the hole of taking shoulder joint and interior sealed plain washer with first V type sealing washer side matched with interior chamfer face.

And further perfecting, a second V-shaped sealing ring with a small inner part and a large outer part is arranged on the edge of the outer sealing flat gasket, and outer chamfer surfaces matched with the side surfaces of the second V-shaped sealing ring are arranged on the inner end edges of the shoulder joint and the inner sealing flat gasket.

Further perfection, the outer side face of the outer sealing flat washer is provided with an outer conical guide face, and the inner wall of the nut is provided with an inner conical guide face matched with the outer conical guide face.

The utility model discloses profitable effect is: the seal gasket of any joint component consists of a seal conical washer, an outer seal flat washer and an inner seal flat washer, the joint with the shoulder and the threaded joint are respectively provided with a conical table surface and a conical hole surface which are matched with the seal conical washer, the sealing performance of any joint component is greatly enhanced, the applicable maximum working pressure is improved, the joint with the shoulder and the threaded joint can be butted through a positioning convex column and a positioning hole, and the seal gasket is not easy to wear due to circumferential rotation when a nut is connected.

Drawings

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

description of the reference numerals: 1. the screw joint 11, the taper hole surface 12, the positioning hole 2, the nut 21, the inner conical guide surface 3, the sealing gasket 31, the sealing conical gasket 32, the outer sealing flat gasket 33, the inner sealing flat gasket 34, the through hole 35, the first V-shaped sealing ring 36, the second V-shaped sealing ring 37, the outer conical guide surface 4, the shoulder joint 41, the taper table surface 42 and the positioning convex column.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to figure 1: in this embodiment, the union includes a threaded union 1, a nut 2, a sealing gasket 3 and a connector 4 with a shoulder, the sealing gasket 3 is located between the threaded union 1 and the connector 4 with the shoulder, the nut 2 is sleeved on the connector 4 with the shoulder, the nut 2 is fixed to the connector 4 with the shoulder through threaded connection with the threaded union 1, the sealing gasket 3 includes a conical sealing gasket 31, an outer flat sealing gasket 32 and an inner flat sealing gasket 33, two ends of the conical sealing gasket 31 are respectively and fixedly connected with the outer flat sealing gasket 32 and the inner flat sealing gasket 33, the connector 4 with the shoulder is provided with a conical table surface 41, the threaded union 1 is provided with a conical hole surface 11, the conical sealing gasket 31 is located between the conical table surface 41 and the conical hole surface 11, the sealing performance of the union is greatly enhanced, the maximum working pressure is improved, a plurality of positioning seals 42 are circumferentially distributed on the inner end surface of the connector 4 with the shoulder, positioning convex columns 12 matched with the positioning convex columns 42 are arranged on the outer end surface of the threaded union 1, the sealing gasket 32 is provided with through holes 34 for the positioning convex columns 42 to be convenient for the positioning convex columns to be installed on the inner ends of the flat sealing gaskets 32. The shoulder joint 4 and the threaded joint 1 can be butted through the positioning convex column 42 and the positioning hole 12, and the sealing gasket 3 is not easy to wear due to circumferential rotation when the nut 2 is connected. The utility model discloses an application scope suggests for air, oil and water that maximum operating pressure is in 2.0MPa-4.0 MPa. The diameters of the inner holes of the threaded joint 1, the shoulder joint 4 and the inner sealing flat washer 33 are equal, so that smooth circulation of media is facilitated.

Be equipped with big-end-up's first V type sealing washer 35 on the hole of interior sealed plain washer 33, all be equipped with on the hole of taking shoulder joint 4 and interior sealed plain washer 33 with first V type sealing washer 35 side matched with interior chamfer face. First V type sealing washer 35 can strengthen the sealing performance of interior sealed plain washer 33, can outwards extrude first V type sealing washer 35 during medium fluid, compresses tightly the laminating with interior chamfer face to the sealing performance of reinforcing joint makes inside seam department be difficult to leak.

The edge of the outer sealing flat gasket 32 is provided with a second V-shaped sealing ring 36 with a small inner part and a large outer part, and the inner end edges of the shoulder joint 4 and the inner sealing flat gasket 33 are provided with outer chamfer surfaces matched with the side surfaces of the second V-shaped sealing ring 36. The second V-shaped sealing ring 36 can enhance the sealing performance of the outer sealing flat gasket 32, so that the joint peripheral seam is not easy to leak.

An outer conical guide surface 37 is arranged on the outer side surface of the outer sealing flat washer 32, and an inner conical guide surface 21 matched with the outer conical guide surface 37 is arranged on the inner wall of the nut 2. The outer flat gasket 32 can be pressed inward by the engagement of the inner tapered guide surface 21 with the outer tapered guide surface 37 when the nut 2 is tightened, the sealing performance of the outer ring is further enhanced, and the outer tapered guide surface 37 has a function of preventing the nut 2 from loosening.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. By wanting to connect the subassembly, including screwed joint (1), nut (2), seal gasket (3) and take shoulder to connect (4), seal gasket (3) are located screwed joint (1) and take the shoulder to connect between (4), take the shoulder to connect and go up the cover and be equipped with nut (2), nut (2) realize the fixed of taking shoulder to connect (4) through the threaded connection with screwed joint (1), its characterized in that: the sealing gasket (3) comprises a sealing conical gasket (31), an outer sealing plain gasket (32) and an inner sealing plain gasket (33), two ends of the sealing conical gasket (31) are fixedly connected with the outer sealing plain gasket (32) and the inner sealing plain gasket (33) respectively, a conical table surface (41) is arranged on the shouldered joint (4), a conical hole surface (11) is arranged on the threaded joint (1), the sealing conical gasket (31) is located between the conical table surface (41) and the conical hole surface (11), a plurality of positioning convex columns (42) are circumferentially distributed on the inner end surface of the shouldered joint (4), positioning holes (12) matched with the positioning convex columns (42) are formed in the inner end surface of the threaded joint (1), and through holes (34) for the positioning convex columns (42) to pass through are formed in the outer sealing plain gasket (32).

2. The union joint assembly of claim 1, wherein: the diameters of inner holes of the threaded joint (1), the shoulder joint (4) and the inner sealing flat washer (33) are equal.

3. The union joint assembly of claim 1, wherein: be equipped with first V type sealing washer (35) of big-end-up on the hole of interior sealed plain washer (33), all be equipped with on the hole of taking shoulder joint (4) and interior sealed plain washer (33) with first V type sealing washer (35) side matched with interior chamfer face.

4. The union joint assembly of claim 1, wherein: and a second V-shaped sealing ring (36) with a small inside and a large outside is arranged on the edge of the outer sealing flat gasket (32), and outer chamfer surfaces matched with the side surfaces of the second V-shaped sealing ring (36) are arranged on the inner end edges of the shoulder joint (4) and the inner sealing flat gasket (33).

5. The union joint assembly of claim 1 or 4, wherein: an outer conical guide surface (37) is arranged on the outer side surface of the outer sealing flat washer (32), and an inner conical guide surface (21) matched with the outer conical guide surface (37) is arranged on the inner wall of the nut (2).