CN212776061U

CN212776061U - Sealing nut assembly

Info

Publication number: CN212776061U
Application number: CN202020682876.XU
Authority: CN
Inventors: 巴佐
Original assignee: Inglass Tooling & Hot Runner Manufacturing China Co ltd
Current assignee: Inglass Tooling & Hot Runner Manufacturing China Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-03-23
Anticipated expiration: 2030-04-28

Abstract

The utility model relates to a gland nut subassembly belongs to the pipe connection technology field, has solved under the higher condition of sealed requirement, the leakage problem that the junction of seal ring and pipeline produced, the utility model discloses a pipeline, valve pipe, lock nut and seal ring, pipeline one end peg graft in the inside of valve pipe, the pipeline mouth sets up seal ring, the pipeline is through compressing tightly seal ring and then compress tightly valve pipe, the outside of valve pipe sets up lock nut, still including setting up the seal nut at valve pipe interface, seal nut set up the recess, valve pipe interface set up the protruding circle that corresponds with the recess, protruding circle and pipeline form the seal groove, seal nut through warping sealed packing seal groove. The utility model discloses utilize seal nut to warp and seal valve pipe interface, simple structure has reached good sealed effect under the lower condition to each subassembly required precision.

Description

Sealing nut assembly

Technical Field

The utility model belongs to the technical field of the pipe connection, a nut component, especially a sealing nut subassembly are related to.

Background

In the market today, it is often necessary to control the fluid or gas in the pipe with a valve. The pipe is typically connected to the valve by a valve guide into which the pipe is inserted and secured by a clamp or lock nut. Since the axial spacing of the pipe and the valve guide is highly required for sealing by mechanical connection and the tolerance margin is small, sealing gaskets are also used today to further seal the pipe and the valve guide. As in the chinese invention patent application No.: CN200510025097.2 discloses a pipeline connecting pipe fitting, which comprises a connecting pipe, a connecting nut, a special-shaped gasket, a structure that the inner hole of the pipeline connecting joint is provided with a step equal to the inner diameter of a stainless steel-plastic composite pipe, the connecting nut sleeved into the connecting pipe which protrudes outwards to form a cambered surface is screwed into the pipeline connecting joint, the special-shaped gasket is pressed to further press the connecting pipe for sealing, and the shape of the connecting nut is similar to that of one end of the connecting pipe which protrudes outwards to form a cambered surface to abut against. The sealing gasket is convenient to connect, firm in sealing and convenient to operate, working efficiency is improved, and the defects that bonding is not firm and inner diameter is reduced due to concave are overcome.

How to realize good sealing performance between a valve guide pipe and a pipeline with low cost becomes a problem to be solved urgently.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a sealing nut subassembly.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a sealing nut subassembly, includes pipeline, valve pipe and lock nut, pipeline one end peg graft in the inside of valve pipe, the outside of valve pipe sets up lock nut, its characterized in that: still including setting up the gland nut at valve pipe interface, gland nut set up the recess, valve pipe interface set up the protruding circle that corresponds with the recess, protruding circle and pipeline enclose synthetic seal groove, gland nut seal in the seal groove through warping.

In a foretell gland nut component, gland nut include nut body, lip, the recess of constituteing by nut body and lip, the outer wall of nut body and valve pipe meet, recess and protruding circle joggle, lip and seal groove cooperate.

In a foretell gland nut component, protruding circle set up the interface at the valve pipe, the cross section of protruding circle be protruding font, including seal groove bottom surface, the protruding circle side of seal groove, protruding face, protruding circle lateral surface and the outer bottom surface of protruding circle, the protruding circle lateral surface of seal groove slope to protruding circle lateral surface, protruding face be the inclined plane, the seal groove bottom surface be the horizontal plane.

In the above-mentioned gland nut assembly, the groove includes a groove bottom surface, a groove lip side surface and a groove nut body side surface, both the groove lip side surface and the groove nut body side surface are inclined toward the nut body, and the groove bottom surface is matched with the convex surface.

In foretell gland nut component, the lip set up the screw thread with the one side that the pipeline meets, the lip keep away from the one end of seal groove and set up the chamfer, lip length be not more than half of gland nut length.

In the above gland nut assembly, the sealing groove further includes a deformation groove, the deformation groove is formed by enclosing a pipeline and an inclined surface formed by inclining the valve guide pipe forming the bottom of the sealing groove in a direction away from the pipeline, and the inclination angle of the inclined surface of the valve guide pipe is not more than 10 °.

In the above sealing nut assembly, the protrusion is inclined toward the outer wall of the valve guide pipe, the outer side surface of the protrusion ring is a vertical surface, and the outer bottom surface of the protrusion ring is an inclined surface and inclined toward the outer wall of the valve guide pipe.

In the above gland nut assembly, the pipe is provided with a fastening ring for mounting the gland nut, and one side of the fastening ring, which is close to the sealing groove, is provided with a sliding groove.

In the above sealing nut assembly, the sealing nut further comprises a sealing gasket, the sealing gasket seals the pipeline and the valve guide pipe, the sealing gasket is arranged at a port at one end, connected with the valve guide pipe in an internal connection mode, of the valve guide pipe, and after the sealing nut is installed, one end, far away from the pipeline, of the sealing nut is attached to the end face of the locking nut.

In the above gland nut assembly, the gland nut is integrally formed, and the material hardness of the gland nut is less than the material hardness of the pipe and the valve guide.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses utilize seal nut to warp and seal valve pipe interface, simple structure has reached good sealed effect under the lower condition to each subassembly required precision.

2. The utility model discloses not only utilize the nut to warp, still utilized gland nut's joint and screw thread locking, simultaneously through the setting to valve pipe interface, through the interact with gland nut, further strengthened sealed effect.

3. The utility model provides a gland nut subassembly easy operation, suitable extensive popularization. Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic structural view provided by the present invention;

FIG. 2 is a sectional view in one direction of FIG. 1;

fig. 3 is a sectional view in one direction of the present invention;

fig. 4 is a cross-sectional view in another direction of the present invention;

FIG. 5 is a schematic view of a component of the present invention;

FIG. 6 is a schematic view of another component of the present invention;

in the figure, a pipeline 1, a valve guide pipe 2, a locking nut 3, a sealing gasket 4, a sealing nut 5, a groove 6, a convex ring 7, a sealing groove 8, a nut body 51, a lip 52, a sealing groove bottom surface 71, a sealing groove convex ring side surface 72, a convex surface 73, a convex ring outer side surface 74, a convex ring outer bottom surface 75, a groove bottom surface 61, a groove lip side surface 62, a groove nut body side surface 63, a deformation groove 81, a fastening ring 11 and a sliding groove 111.

Detailed Description

As shown in fig. 1-4, a seal nut assembly comprises a pipe 1, a valve guide pipe 2, and a lock nut 3, wherein one end of the pipe 1 is inserted into the valve guide pipe 2, and the lock nut 3 is arranged outside the valve guide pipe 2, which is characterized in that: still including setting up seal nut 5 at valve pipe 2 interface, seal nut 5 set up recess 6, valve pipe 2 interface set up the bellying circle 7 that corresponds with recess 6, bellying circle 7 and pipeline 1 enclose synthetic seal groove 8, seal nut 5 seal in seal groove 8 through the deformation.

When the pipeline 1 and the valve guide pipe 2 are installed and installed with the locking nut 3, the sealing nut 5 is screwed to the position shown in the figure 2, the groove 6 is adjusted to be completely corresponding to the raised ring 7, the sealing nut 5 is continuously screwed to be joggled with the groove 6 and the raised ring 7, the sealing nut 5 is continuously screwed until the sealing nut 5 deforms, the acting force generated by locking the sealing nut 5, the mutual acting force of the groove 6 and the raised ring 7 and the extrusion force generated by the sealing nut 5 and the pipeline 1 are used, the sealing nut 5 deforms, and sealing is achieved under the condition that the end face position is stable.

As shown in fig. 5, the seal nut 5 includes a nut body 51, a lip 52, and a groove 6 formed by the nut body 51 and the lip 52, the nut body 51 is connected to the outer wall of the valve guide 2, the groove 6 is joggled with the convex ring 7, and the lip 52 is matched with the seal groove 8.

The nut body 51 and the outer wall of the valve guide tube 2 may be in threaded connection, not shown in the figure, and the surface of the lip 52, which is connected with the pipe 1, may be an inclined surface or a conical surface. The end face of the sealing nut 5 is a horizontal plane, and is more suitable for production and installation.

As shown in fig. 6, the protruding ring 7 is disposed at the interface of the valve conduit 2, the cross section of the protruding ring 7 is in a shape of a Chinese character 'tu', and includes a sealing groove bottom 71, a sealing groove protruding ring side 72, a protruding surface 73, a protruding ring outer side 74 and a protruding ring outer bottom 75, the sealing groove protruding ring side 72 inclines towards the protruding ring outer side 74, the protruding surface 73 is an inclined surface, and the sealing groove bottom 71 is a horizontal surface.

It will be understood by those skilled in the art that the sealing groove convex ring side 72 is inclined to the convex ring outer side 74, i.e. the sealing groove is gradually narrowed from the groove opening to the groove bottom, which not only further ensures the sealing effect, but also facilitates the practical operation. The convex surface 73 is an inclined surface instead of a horizontal surface, the bottom of the corresponding groove 6 is not parallel to the end surface of the sealing nut 5, and when the groove 6 is joggled and fixed with the convex ring 7, non-horizontal acting force can be generated, so that the lip plate 52 is more beneficial to deformation. The actual sealing effect can also be ensured by setting the bottom surface 71 of the sealing groove as a horizontal plane for positioning.

As shown in fig. 2-4, the groove 6 includes a groove bottom surface 61, a groove lip side surface 62 and a groove nut body side surface 63, the groove lip side surface 62 and the groove nut body side surface 63 are both inclined toward the nut body 51, and the groove bottom surface 61 is engaged with the convex surface 73.

Furthermore, the face that lip 52 meets with pipeline 1 sets up the screw thread, the one end that the seal groove 8 was kept away from to lip 52 set up the chamfer, because the deformation of lip 52 is the biggest, in order to prevent that gland nut 5 excessively deforms, simultaneously the comprehensive consideration cost of manufacture and actual production needs, lip 52 length be not more than half of gland nut 5 length.

As shown in fig. 3, the sealing groove 8 further includes a deformation groove 81, the deformation groove 81 is formed by enclosing the pipe 1 and an inclined surface formed by inclining the valve guide pipe 2 forming the bottom of the sealing groove 8 in a direction away from the pipe 1, and an inclination angle of the inclined surface of the valve guide pipe 2 is not more than 10 °. It will be understood by those skilled in the art that the gland nut 5, and particularly the lip 52, is deformed by forces in a plurality of directions, and the contact surface of the lip 52 with the bottom surface 71 of the sealing groove may be deformed to be non-horizontal, thereby providing the deformation groove 81. And is more favorable for realizing good sealing effect.

Furthermore, as shown in fig. 5, the raised surface 73 is inclined toward the outer wall of the valve guide 2, rather than toward the pipe, for better dovetail joint between the groove 6 and the raised ring 7 and better positioning. The outer side surface 74 of the convex ring is a vertical surface, and the outer bottom surface 75 of the convex ring is an inclined surface and inclines towards the outer wall of the valve guide pipe 2.

As shown in fig. 2 to 4, the pipe 1 is provided with a fastening ring 11 for mounting the seal nut 5, and a sliding groove 111 is formed on one side of the fastening ring 11 close to the seal groove 8. The positioning groove is arranged to facilitate installation of the sealing nut 5, and the sliding groove 111 is beneficial to installation of the sealing nut 5 and positioning of the sealing nut 5.

Furthermore, as shown in fig. 3-4, the valve assembly further comprises a sealing gasket 4, the sealing gasket 4 seals the pipe 1 and the valve guide pipe 2, the sealing gasket 4 is arranged at a port at one end, connected to the pipe 1 and the valve guide pipe 2, of the pipe, and after the sealing nut 5 is installed, one end, far away from the pipe 1, of the sealing nut is attached to the end face of the locking nut 3.

The valve guide 2 may be provided with a groove in which the sealing gasket 4 is disposed. The present embodiment can further enhance the sealing effect by providing the sealing gasket 4. In this embodiment, the lock nut 3 may be installed after the seal nut 5 is installed. The sealing and positioning of the gland nut assembly are facilitated by the interaction force of the gland nut 5 and the lock nut 3. Further, when the sealing gasket 4 has a gap with the pipe 1 and does not achieve sealing, a wrench or other tool can be used to screw 11, so that the sealing gasket 4 is sealed with the pipe 1, and further leakage is prevented.

As will be understood by those skilled in the art, the gland nut (5) is integrally formed, and the material hardness of the gland nut (5) is less than that of the pipeline (1) and the valve guide pipe (2). This ensures that, when the interaction force is generated, the gland nut 5 is deformed instead of the pipe 1 and the valve guide 2. The gland nut 5 may be made of steel or alloy, such as brass, bronze or other material, depending on the actual production requirements.

The utility model discloses a theory of operation is: after the installation of the pipe 1, the valve guide 2, the union nut 3 and the sealing washer 4 is completed, the sealing nut 5 is first screwed onto the valve guide 2 via the sliding groove 111 of the fastening ring 11. When the position is rotated to the position shown in figures 2-4, the position is checked and adjusted, and the positions of the grooves 6 and the raised rings 7 are ensured to be in one-to-one correspondence. After the inspection is finished, the nut body 51 is continuously screwed until the threaded connection between the nut body and the outer wall of the valve guide pipe 2 is completed, at the moment, the end, far away from the pipeline 1, of the sealing nut 5 is attached to the end face of the locking nut 3, and the lip plate 52 reaches the bottom face 71 of the sealing groove. Then, a certain force is applied from the end face of the seal nut 5 until the groove 6 is joggled with the convex ring 7, and at the same time, the lip plate 52 is deformed under multiple actions, the seal groove 8 is completely sealed, namely, the side where the lip plate 52 is connected with the pipeline 1 is sealed due to thread variation, the groove lip plate side face 62 and the seal groove convex ring side face 72 are further sealed under the condition of joggled seal, and the lip plate 52 is deformed to realize the sealing of the deformed groove 81. And finishing the sealing of the sealing nut assembly. The utility model discloses the installation is not limited to above-mentioned step and order, can adjust according to actual need.

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 the terms of the pipe 1, the valve guide 2, the lock nut 3, the sealing washer 4, the seal nut 5, the groove 6, the bead ring 7, the seal groove 8, the nut body 51, the lip 52, the seal groove bottom 71, the seal groove bead side 72, the bead face 73, the bead ring outer side 74, the bead ring outer bottom 75, the groove bottom 61, the groove lip side 62, the groove nut body side 63, the deformation groove 81, the fastening ring 11, the slide groove 111, etc., are used more extensively herein, 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 and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. The utility model provides a gland nut subassembly, includes pipeline (1), valve pipe (2) and lock nut (3), pipeline (1) one end peg graft in the inside of valve pipe (2), the outside of valve pipe (2) sets up lock nut (3), its characterized in that: still including setting up gland nut (5) at valve pipe (2) interface, gland nut (5) set up recess (6), valve pipe (2) interface set up protruding circle (7) that correspond with recess (6), protruding circle (7) enclose synthetic seal groove (8) with pipeline (1), gland nut (5) seal in seal groove (8) through warping.

2. A gland nut assembly according to claim 1, wherein: sealing nut (5) including nut body (51), lip (52), recess (6) of constituteing by nut body (51) and lip (52), the outer wall of nut body (51) and valve pipe (2) meet mutually, recess (6) and protruding circle (7) joggle, lip (52) and seal groove (8) cooperate.

3. A gland nut assembly according to claim 1, wherein: protruding circle (7) set up the interface in valve pipe (2), the cross section of protruding circle (7) be protruding font, including seal groove bottom surface (71), seal groove protruding circle side (72), protruding face (73), protruding circle lateral surface (74) and protruding outer bottom surface (75) of circle, seal groove protruding circle side (72) to protruding circle lateral surface (74) slope, protruding face (73) be the inclined plane, seal groove bottom surface (71) be the horizontal plane.

4. A gland nut assembly according to claim 3, wherein: the groove (6) comprises a groove bottom surface (61), a groove lip side surface (62) and a groove nut body side surface (63), the groove lip side surface (62) and the groove nut body side surface (63) are inclined towards the nut body (51), and the groove bottom surface (61) is matched with the protruding surface (73).

5. The seal nut assembly of claim 4 wherein: the one side that lip (52) and pipeline (1) meet set up the screw thread, lip (52) keep away from the one end of seal groove (8) and set up the chamfer, lip (52) length be not more than half of gland nut (5) length.

6. A gland nut assembly according to claim 3, wherein: seal groove (8) still include deformation groove (81), deformation groove (81) enclose to close by valve pipe (2) of constituteing seal groove (8) bottom to the inclined plane and pipeline (1) of keeping away from the direction slope formation of pipeline (1) and form, the inclined plane inclination of valve pipe (2) no longer than 10.

7. A gland nut assembly according to claim 3, wherein: the convex surface (73) inclines towards the outer wall of the valve guide pipe (2), the outer side surface (74) of the convex ring is a vertical surface, and the outer bottom surface (75) of the convex ring is an inclined surface and inclines towards the outer wall of the valve guide pipe (2).

8. A gland nut assembly according to claim 3, wherein: pipeline (1) set up fastening ring (11) that installation gland nut (5) were used, fastening ring (11) be close to one side of seal groove (8) and set up spout (111).

9. A gland nut assembly according to claim 1, wherein: still include seal ring (4), seal ring (4) sealed pipeline (1) and valve guide pipe (2), seal ring (4) set up the port in pipeline (1) and valve guide pipe (2) inscription one end, seal nut (5) after the installation is accomplished, the terminal surface of keeping away from the one end of pipeline (1) and lock nut (3) is laminated mutually.

10. A gland nut (5) assembly according to any of claims 1-9, characterized in that: the sealing nut (5) is integrally formed, and the material hardness of the sealing nut (5) is less than that of the pipeline (1) and the valve guide pipe (2).