CN211449965U

CN211449965U - Sealing joint structure

Info

Publication number: CN211449965U
Application number: CN201921942366.5U
Authority: CN
Inventors: 周赛军; 王云飞
Original assignee: Zhejiang Xinjinchen Machinery Co ltd
Current assignee: Zhejiang Xinjinchen Machinery Co ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-09-08
Anticipated expiration: 2029-11-12

Abstract

The utility model provides a sealing joint structure, it has solved the pipe connection leakproofness poor, unable used repeatedly scheduling problem, it sets up at the choke valve and between the butt joint pipe, the choke valve passes through grafting structure and butt joint union coupling, grafting structure includes the interior mouth of choke valve and the pier nose of butt joint pipe, through the seal structure joint between pier nose and interior mouth, first sealing washer in the seal structure is compressed tightly in first seal groove by the annular chamfer of the uncovered edge of interior mouth and the limit structure who goes up with the choke valve laminating on the butt joint pipe, second sealing washer in the seal structure is filled the second seal groove of pier nose and the space between the interior mouth. The utility model has the advantages of good sealing performance, stable structure and the like.

Description

Sealing joint structure

Technical Field

The utility model belongs to the technical field of the pressure line is sealed, concretely relates to sealing joint structure.

Background

The pipeline connection means that the prefabricated pipe sections are connected into a complete system according to the requirements of design drawings. In the pipeline engineering construction, different connection methods should be selected according to the material of the used pipes. The common steel pipe is connected with a flange plate through a threaded connection and a welding connection; the seamless steel pipe, the nonferrous metal and the stainless steel pipe are mostly welded and connected with a flange; the cast iron pipes are connected by socket joints, and a small number of cast iron pipes are connected by flanges; the plastic pipe is mainly connected by threads, bonding, hot melting and the like, and other nonmetal pipes are connected in various forms. However, in any connection method, strict requirements are imposed on the sealing performance of the pipeline joint. At present, the pipeline connection mode with better sealing performance is welding sealing, but the sealing connection mode cannot be used repeatedly. When the pipeline joint adopts socket joint to connect, can't guarantee the leakproofness in the annular space.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a primary and secondary seal ring [201320784636.0] for smooth metal pipe connections, which includes a pipe joint, a nut, a primary seal ring and a secondary seal ring; the end opening of the pipe joint is conical, the metal pipeline is inserted from the conical opening of the pipe joint during connection, the female sealing ring, the sub-sealing ring and the nut are sequentially sleeved outside the metal pipeline, the nut is pre-tightened to enable the nut and the pipe joint to be fastened, meanwhile, the sub-sealing ring is squeezed to compress the female sealing ring, the female sealing ring is tightly pressed on the surface of the conical hole of the pipe joint, two-stage sealing is formed, and finally, reliable connection of the smooth metal pipeline is achieved.

The problem that repeated connection cannot be achieved is solved to a certain extent by the aid of the scheme, but a plurality of defects still exist in the scheme, and for example, the sealing performance of seams cannot be guaranteed.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a reasonable in design, sealed effectual sealing joint structure.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this sealing joint structure sets up between choke valve and butt joint pipe, and the choke valve passes through grafting structure and butt joint union coupling, and grafting structure includes the interior mouth of choke valve and the pier nose to the pipe, through the seal structure joint between pier nose and interior mouth, and first sealing washer in the seal structure is compressed tightly in first seal groove by the annular chamfer of the uncovered edge of interior mouth and the limit structure who goes up with the choke valve laminating on the butt joint pipe, and second sealing washer in the seal structure is filled the space between second seal groove and the interior mouth of pier nose. Through a plurality of sealing rings, seal the space between choke valve and the butt joint pipe, improved whole leakproofness.

In the above-described seal joint structure, the seal structure includes the first seal portion and the second seal portion on the pier nose side. The first sealing portion is close to the limiting structure relative to the second sealing portion.

In foretell sealing joint structure, first sealing part includes first seal groove and first sealing washer, and first seal groove is located pier head and is located limit structure's one side, and first sealing washer overlaps in first seal groove.

In foretell sealing joint structure, second sealing portion includes second seal groove and second sealing washer, and the second seal groove sets up in pier nose middle part, and the second sealing washer overlaps in the second seal groove, and the second seal groove depth degree is greater than first seal groove. The depth of the second sealing groove is increased, secondary sealing is facilitated, and the sealing effect is improved.

In foretell sealing joint structure, pier nose and the laminating of internal orifice side are through the closure structure laminating, and the closure structure includes first closing part and second closing part.

In foretell sealing joint structure, first seal is including setting up the closed section in pier nose middle part, and the closed section outside is laminated with the inboard of internal orifice, and first seal groove and second seal groove set up respectively at the closed section both ends.

In the sealing joint structure, the outer edge of the closed section is an arc-shaped sealing part, and the middle part of the arc-shaped sealing part is attached to the inner side of the inner opening of the throttle valve. When the pier head needs to be inserted again, the arc-shaped sealing part is favorable for pulling out the pier head again.

In the sealing joint structure, the second sealing part comprises a sealing head at the end part of the pier head, the outer side of the sealing head is attached to the inner side of the inner opening, and a gap is reserved between the end head surface of the sealing head and the bottom surface of the inner opening. A certain gap is reserved between the end face of the sealing head and the bottom surface of the inner opening, so that the internal pressure of the sealing joint is ensured not to be too high, and leakage is avoided.

In foretell sealing joint structure, limit structure includes spacing section, and spacing section setting is laminated mutually on the butt joint pipe and the end of one end and choke valve.

In the above-mentioned sealing joint structure, the spacing section includes the sealed arc limit that sets up in the outside, and the sealed arc limit is with the inner opening complete closure of choke valve. The first seal portion is closed by a seal arc edge so that the inner opening is isolated from the outside.

Compared with the prior art, the utility model has the advantages of: a plurality of groups of sealing grooves and sealing rings are added, and the sealing rings tightly press the inner opening and the pier head, so that the overall sealing effect is improved; the internal prescription is convenient to insert and can be used for multiple times; a buffer area is reserved inside, so that the use stability is improved;

drawings

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

FIG. 2 is a schematic view of the assembled structure of the present invention;

in the figure, a throttle valve 1, an inner opening 11, an annular chamfer 12, a butt joint pipe 2, a pier head 21, an insertion structure 3, a sealing structure 4, a first sealing part 41, a first sealing groove 42, a first sealing ring 43, a second sealing part 44, a second sealing groove 45, a second sealing ring 46, a limiting structure 5, a limiting section 51, a sealing arc edge 52, a sealing structure 6, a first sealing part 61, a sealing section 62, an arc-shaped sealing part 63, a second sealing part 64 and a sealing head 65.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, the sealing joint structure is arranged between a throttle valve 1 and a butt joint pipe 2, the throttle valve 1 is connected with the butt joint pipe 2 through an insertion structure 3, the insertion structure 3 comprises an inner opening 11 of the throttle valve 1 and a pier head 21 of the butt joint pipe 2, the pier head 21 is connected with the inner opening 11 through a sealing structure 4, a first sealing ring 43 in the sealing structure 4 is pressed in a first sealing groove 42 by an annular chamfer 12 at the opening edge of the inner opening 11 and a limiting structure 5 attached to the throttle valve 1 on the butt joint pipe 2, and a second sealing ring 46 in the sealing structure 4 fills a gap between a second sealing groove 45 of the pier head 21 and the inner opening 11. When the pier nose 21 is inserted into the inner opening 11, the first sealing ring 43 and the second sealing ring 46 gradually seal the gap between the inner opening 11 and the pier nose 21, and the sealing effect is improved.

Specifically, the seal structure 4 includes a first seal portion 41 and a second seal portion 44 on the side of the abutment 21. The first seal portion 41 is provided on the side of the second seal portion 44 remote from the tip.

Secondly, the first sealing portion 41 includes a first sealing groove 42 and a first sealing ring 43, the first sealing groove 42 is located on the pier head 21 and located on one side of the limiting structure 5, and the first sealing ring 43 is sleeved in the first sealing groove 42. Wherein the first sealing ring 43 is pressed by the limiting structure 5, the pier 21 and the throttle valve 1 in multiple directions.

Deeply, the second sealing portion 44 includes a second sealing groove 45 and a second sealing ring 46, the second sealing groove 45 is disposed in the middle of the pier 21, the second sealing ring 46 is sleeved in the second sealing groove 45, and the depth of the second sealing groove 45 is greater than that of the first sealing groove 42. The inside and outside of the second sealing ring 46 are respectively attached to the pier head 21 and the inner opening 11, the outer diameter of the second sealing ring is larger than that of the first sealing ring 46, the diameter of the first sealing groove 42 is 9mm, the diameter of the second sealing groove 45 is 7.4mm, and when the first sealing ring 43 and the second sealing ring 46 are respectively sleeved on the second sealing ring 46, the second sealing ring is in interference fit with the inner opening 11 of the throttle valve 1.

In addition, pier head 21 and interior mouth 11 side laminating pass through closure structure 6 and laminate, and closure structure 6 includes first closing part 61 and second closing part 64.

It is obvious that the first sealing portion 61 includes a sealing section 62 disposed in the middle of the pier head 21, the outer side of the sealing section 62 is attached to the inner side of the inner opening 11, and the first sealing groove 42 and the second sealing groove 45 are disposed at two ends of the sealing section 62, respectively.

Further, the outer edge of the closing section 62 is an arc-shaped sealing part 63, and the middle part of the arc-shaped sealing part 63 is attached to the inner side of the inner opening 11 of the throttle valve 1.

Obviously, the second closing portion 64 includes a closing head 65 at the end of the abutment 21, the outer side of the closing head 65 is attached to the inner side of the inner opening 11, and a gap is left between the end surface of the closing head 65 and the bottom surface of the inner opening 11. Wherein the diameter of the closing section 62 is the same as that of the closing head 65 at the end of the pier head 21, and the closing section and the closing head are both 10mm and are in clearance fit with the inner opening 11.

Further, limit structure 5 includes spacing section 51, and spacing section 51 sets up and is laminated mutually with the end of choke valve 1 on butt joint pipe 2 and one end.

Preferably, the stopper section 51 includes a sealing arc edge 52 disposed at the outer side, and the sealing arc edge 52 completely closes the inner opening 11 of the throttle valve 1. The diameter of the limiting section 51 is 14mm, is larger than the diameter of the edge of the annular chamfer 12 of the inner opening 11, and is smaller than the outer diameter of the throttle valve 1, so that the internal fluid is prevented from leaking.

The principle of the embodiment is as follows: the sealing structure 4 and the sealing mechanism 6 are arranged outside the pier head 21 of the butt joint pipe 2 to avoid fluid leakage, wherein the depth of the second sealing groove 45 in the sealing structure 4 is larger than that of the first sealing groove 42, and the second sealing ring 46 and the first sealing ring 43 are respectively sleeved on the sealing structure and are in interference fit with the inner opening 11 of the throttle valve 1. Wherein, the spacing segment 51 of the spacing joint 5 of the pier head 21 is tightly attached to the throttle valve 1, and the inner opening 11 is isolated from the outside.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the throttle valve 1, the inner opening 11, the annular chamfer 12, the butt pipe 2, the abutment 21, the plug structure 3, the sealing structure 4, the first sealing portion 41, the first sealing groove 42, the first sealing ring 43, the second sealing portion 44, the second sealing groove 45, the second sealing ring 46, the limiting structure 5, the limiting section 51, the sealing arc edge 52, the sealing structure 6, the first sealing portion 61, the closing section 62, the arc-shaped sealing portion 63, the second sealing portion 64, and the closing head 65 are used more often, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a sealing joint structure, sets up between choke valve (1) and butt joint pipe (2), its characterized in that, choke valve (1) be connected with butt joint pipe (2) through grafting structure (3), grafting structure (3) including interior mouthful (11) of choke valve (1) and pier nose (21) to butt joint pipe (2), pier nose (21) and interior mouthful (11) between through seal structure (4) joint, seal structure (4) in first sealing washer (43) by annular chamfer (12) of interior mouthful (11) opening edge and butt joint pipe (2) on with limit structure (5) of choke valve (1) laminating compress tightly in first seal groove (42), seal structure (4) in second sealing washer (46) with the space between second seal groove (45) and the interior mouthful (11) of pier nose (21) fill.

2. The sealing joint arrangement according to claim 1, characterized in that the sealing structure (4) comprises a first sealing portion (41) and a second sealing portion (44) at the sides of the abutment (21).

3. The sealing joint structure according to claim 2, wherein the first sealing portion (41) includes a first sealing groove (42) and a first sealing ring (43), the first sealing groove (42) is located on the pier head (21) and located on one side of the limiting structure (5), and the first sealing ring (43) is sleeved in the first sealing groove (42).

4. The seal joint structure of claim 3, wherein the second sealing portion (44) includes a second sealing groove (45) and a second sealing ring (46), the second sealing groove (45) is disposed at a middle portion of the pier head (21), the second sealing ring (46) is sleeved in the second sealing groove (45), and a depth of the second sealing groove (45) is greater than a depth of the first sealing groove (42).

5. The sealing joint arrangement according to claim 1 or 2 or 3 or 4, wherein the abutment (21) is attached to the side of the internal opening (11) by a closure structure (6), and the closure structure (6) comprises a first closure portion (61) and a second closure portion (64).

6. The seal joint structure of claim 5, wherein the first sealing portion (61) includes a sealing section (62) disposed in the middle of the pier (21), the outer side of the sealing section (62) is attached to the inner side of the inner opening (11), and the first sealing groove (42) and the second sealing groove (45) are disposed at two ends of the sealing section (62), respectively.

7. The seal joint arrangement according to claim 6, wherein the outer edge of the closed section (62) is an arc-shaped sealing portion (63), and the middle of the arc-shaped sealing portion (63) is attached to the inner side of the inner opening (11) of the throttle valve (1).

8. The sealing joint structure according to claim 5, wherein the second closing portion (64) comprises a closing head (65) at an end of the pier head (21), an outer side of the closing head (65) is attached to an inner side of the inner opening (11), and a gap is left between an end surface of the closing head (65) and a bottom surface of the inner opening (11).

9. The sealing joint structure according to claim 1, wherein the limiting structure (5) comprises a limiting section (51), and the limiting section (51) is disposed on the butt joint pipe (2) and has one end fitting the end of the throttle valve (1).

10. The seal joint arrangement according to claim 9, characterized in that the stop segment (51) comprises an outwardly disposed sealing edge (52), and the sealing edge (52) completely closes the inner opening (11) of the throttle valve (1).