CN219263495U

CN219263495U - Stainless steel corrugated hose locknut joint for fuel gas

Info

Publication number: CN219263495U
Application number: CN202320215359.5U
Authority: CN
Inventors: 向磊; 胡熙存
Original assignee: Ningbo Suoli Pipe Co ltd
Current assignee: Ningbo Suoli Pipe Co ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-06-27
Anticipated expiration: 2033-02-15

Abstract

The utility model discloses a stainless steel corrugated hose locknut joint for fuel gas, which comprises a nut joint body and a threaded interface matched with the nut joint body, wherein one end of the nut joint body is connected to a corrugated hose, the other end of the nut joint body is provided with an internal threaded section in threaded connection with the threaded interface, the peripheral wall of the nut joint body is provided with one or more threaded holes, the threaded holes penetrate through the inner wall and the outer wall of the nut joint body along the radial direction of the nut joint body, a plugging bolt in locking fit with the threaded interface is arranged in the threaded holes, a special plugging bolt is screwed in the threaded holes, the installation initial position of the plugging bolt is flush with the nut joint body, the screwing of a spanner on the nut joint body is not influenced, the plugging bolt is screwed tightly against the threaded interface after the installation of the nut joint body is completed, and the plugging bolt plays a role of locking.

Description

Stainless steel corrugated hose locknut joint for fuel gas

Technical Field

The utility model relates to the technical field of gas equipment, in particular to a stainless steel corrugated hose locknut joint for gas.

Background

The stainless steel corrugated hose for gas has the characteristics of strong corrosion resistance, sedimentation resistance, rat and insect bite resistance, no gas blockage and the like, so that gas companies and wide users are approved and widely used. However, after the execution standard of the stainless steel corrugated hose for connecting the gas appliance is upgraded from the industry standard to the national standard, namely, from CJ/T197-2010 stainless steel corrugated hose for connecting the gas appliance to GB/T41317-2022 stainless steel corrugated hose for connecting the gas appliance, the interface only adopts a threaded connection type interface after the implementation of the new national standard, and the plug-in interface is cancelled. The threaded interface has the advantages of high strength, good end face tightness and the like, but the common threaded interface adopts a mode of screwing a nut and an even gasket sealing ring, threads do not have anti-loosening characteristics, and risks of loosening and sealing failure of the threads can be caused when the threads meet use scenes such as frequent movement and the like, so that the stainless steel corrugated hose anti-loosening nut joint for the fuel gas is specially developed for solving the problem.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings of the prior art and provide a stainless steel corrugated hose locknut joint for fuel gas, which has the advantages of simple and reasonable structure, convenient operation and good sealing and locking effects.

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

the utility model provides a stainless steel corrugated hose locknut connects for gas, the nut connects including the nut connects the body, with the screwed joint of nut joint body looks adaptation, the one end that the nut connects the body is connected to corrugated hose, the other end that the nut connects the body is provided with the internal thread section with screwed joint threaded connection, the week wall that the nut connects the body is provided with one or more screw holes, the screw hole radially link up the inside and outside wall that the nut connects the body along the nut connects the body, threaded hole is provided with the cock tightening bolt with screwed joint locking complex.

Further, a hollow sealing gasket is arranged in the nut joint body, one end of the sealing gasket is arranged in a plane and is in sealing fit with the corrugated hose, and the other end of the sealing gasket is provided with a flaring inclined plane and is in sealing fit with the threaded interface.

Further, the end part of the corrugated hose is provided with an annular flanging, the nut joint body is radially provided with a convex ring matched with the annular flanging in a locking and disengaging way, the annular flanging is positioned in the nut joint body, and the annular flanging is propped between the sealing gasket and the convex ring.

Further, the gasket extends to an internally threaded section of the nut fitting body.

Further, the pore diameter of the sealing gasket is smaller than that of the corrugated hose.

Further, the threaded interface is provided with an external thread segment matching the internal thread segment.

Further, the plugging bolt is provided with an operation hole.

Further, the threaded holes of the plugging bolt and the nut joint body adopt fine threads.

Further, the axial length of the plugging bolt is smaller than or equal to the depth of the threaded hole.

The beneficial effects of the utility model are as follows: according to the stainless steel corrugated hose locknut joint for the fuel gas, the special plugging bolt is screwed into the threaded hole, the installation starting position of the plugging bolt is flush with the nut joint body, the screwing of a spanner to the nut joint body is not influenced, the plugging bolt is screwed after the nut joint body is installed, the plugging bolt is tightly abutted against the threaded interface, the locking effect is achieved, the risk that the threaded interface is loosened and sealed to lose efficacy when the threaded interface is frequently moved in use scenes is avoided, and the sealing and lockness effects are effectively achieved.

When the nut joint body is respectively installed with the corrugated hose and the threaded interface, one end of the sealing gasket connected with the threaded interface is in flaring-shaped inclined plane design, and is outwards opened when stressed and is propped against the inner threaded section of the nut joint body, so that the sealing effect is good, one end of the sealing gasket connected with the corrugated hose is in planar design, the sealing gasket can be tightly attached to the corrugated hose, the sealing effect is good, and unexpected displacement is not easy to occur in the process of stressed extrusion of the sealing gasket.

Drawings

FIG. 1 is a schematic structural view of a nut fitting body;

FIG. 2 is a schematic view of the connection of the nut fitting body to the corrugated hose;

FIG. 3 is a schematic view of the structure of the nut fitting body and threaded interface when not installed;

fig. 4 is a schematic view of the structure of the nut fitting body when it is mounted with the threaded interface.

In fig. 1-4: 1. a nut joint body; 2. plugging the bolt; 3. a threaded hole; 4. a sealing gasket; 5. a flaring inclined plane; 6. a threaded interface; 7. a corrugated hose; 8. an operation hole; 9. a convex ring; 10. and (5) annular flanging.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The stainless steel corrugated hose locknut joint for fuel gas as shown in fig. 1-4 comprises a nut joint body 1 and a threaded interface 6 matched with the nut joint body 1, one end of the nut joint body 1 is connected to a corrugated hose 7, the other end of the nut joint body 1 is provided with an internal threaded section in threaded connection with the threaded interface 6, the peripheral wall of the nut joint body 1 is provided with one or more threaded holes 3, the threaded holes 3 penetrate through the inner wall and the outer wall of the nut joint body 1 along the radial direction of the nut joint body 1, and a plugging bolt 2 in locking fit with the threaded interface 6 is arranged in the threaded holes 3.

Specifically speaking, screw in special cock bolt 2 in screw hole 3 that sets up, cock bolt 2 installs initial position and nut joint body 1 parallel and level, does not influence the spanner and to the screw up of nut joint body 1, screw up cock bolt 2 after the nut joint body 1 installs, plays sealed locking effect.

Preferably, in this embodiment, a hollow sealing pad 4 is disposed in the nut joint body 1, one end of the sealing pad 4 is disposed in a plane and is in sealing fit with the corrugated hose 7, and the other end of the sealing pad 4 is disposed with a flared inclined surface 5 and is in sealing fit with the threaded interface 6. When the nut joint body 1 is respectively installed with the corrugated hose 7 and the threaded connector 6, one end, connected with the threaded connector 6, of the sealing gasket 4 is in a flaring-shaped inclined plane 5 design, and is outwards opened when stressed, and is propped against an internal threaded section of the nut joint body 1, so that the sealing effect is good, one end, connected with the corrugated hose 7, of the sealing gasket 4 is in a planar design, can be tightly attached to the corrugated hose 7, the sealing effect is good, and unexpected displacement, such as extrusion into the corrugated hose 7 or the threaded connector 6, of the sealing gasket 4 is not easy to occur in the process of forced extrusion, so that the use is affected.

Specifically, the end of the corrugated hose 7 is provided with an annular flange 10, the nut joint body 1 is radially provided with a convex ring 9 which is in anti-disengaging fit with the annular flange 10, the annular flange 10 is positioned in the nut joint body 1, and the annular flange 10 is abutted between the sealing gasket 4 and the convex ring 9. The annular flanging 10 is matched with the convex ring 9 in a detachment-preventing way, so that the corrugated hose 7 is not easily affected by external force and separated from the nut joint body 1, and the connection relationship between the corrugated hose 7 and the nut joint body is firmer. The annular flange 10 is propped between the sealing gasket 4 and the convex ring 9, so that the annular flange 10 is respectively tightly attached to the plane end of the sealing gasket 4 and the convex ring 9, the sealing effect is better, and the air leakage is not easy to occur.

Preferably, in this embodiment, said gasket 4 extends to the internal thread section of the nut joint body 1. The screw interface 6 is in the in-process of screwing up, and sealing washer 4 is pressed to the unavoidable, and sealing washer 4 closely laminates with screw interface 6 for sealed effect is better.

Preferably, in this embodiment, the aperture of the gasket 4 is smaller than the aperture of the bellows 7. The sealing effect can be better achieved.

Specifically, the threaded interface 6 is provided with an external thread segment matching an internal thread segment. The threaded connection makes the connection between the nut joint body 1 and the threaded interface 6 more firm.

Preferably, in this embodiment, the plugging bolt 2 is provided with an operation hole 8. Specifically, in this embodiment, the operation hole 8 of the plugging bolt 2 adopts an inner hexagon, so that the installation is convenient, and in other embodiments, the operation hole 8 can also adopt other special shapes for preventing theft or misoperation of a user.

Preferably, in this embodiment, the plugging bolt 2 and the threaded hole 3 of the nut joint body 1 adopt fine threads. The fine thread is adopted, so that the tightening force is stronger, and the sealing and anti-loosening effects between the plugging bolt 2 and the nut joint body 1 are better.

Specifically speaking, the plugging bolt 2 and the threaded interface 6 are propped against to be locked and matched, the installed plugging bolt 2 and the threaded interface 6 are tightly propped against to play a role in locking, the risk that the threaded interface 6 causes loose and invalid sealing of threads when encountering use scenes such as frequent movement is avoided, and the effect of sealing and looseness prevention is effectively achieved.

Preferably, in this embodiment, the axial length of the plugging bolt 2 is not greater than the depth of the threaded hole 3. After the nut joint body 1 is installed, the plug bolt 2 can be continuously screwed inwards, so that the sealing and locking effects are achieved.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims

1. The utility model provides a stainless steel corrugated hose locknut connects for gas which characterized in that: the nut joint comprises a nut joint body (1), a threaded connector (6) which is matched with the nut joint body (1), one end of the nut joint body (1) is connected to a corrugated hose (7), the other end of the nut joint body (1) is provided with an internal thread section which is in threaded connection with the threaded connector (6), the peripheral wall of the nut joint body (1) is provided with one or more threaded holes (3), the threaded holes (3) penetrate through the inner wall and the outer wall of the nut joint body (1) along the radial direction of the nut joint body (1), and a plugging bolt (2) which is in locking fit with the threaded connector (6) is arranged in the threaded holes (3).

2. A stainless steel corrugated hose locknut fitting for gas as defined in claim 1, wherein: the nut joint is characterized in that a hollow sealing gasket (4) is arranged in the nut joint body (1), one end of the sealing gasket (4) is arranged in a plane and is in sealing fit with the corrugated hose (7), and the other end of the sealing gasket (4) is provided with a flaring inclined plane (5) and is in sealing fit with the threaded connector (6).

3. A stainless steel corrugated hose locknut fitting for gas as defined in claim 2, wherein: the end of the corrugated hose (7) is provided with an annular flange (10), the nut joint body (1) is radially provided with a convex ring (9) which is in locking fit with the annular flange (10), the annular flange (10) is positioned in the nut joint body (1), and the annular flange (10) is propped between the sealing gasket (4) and the convex ring (9).

4. A stainless steel corrugated hose locknut fitting for gas as defined in claim 2, wherein: the sealing gasket (4) extends to the internal thread section of the nut joint body (1).

5. A stainless steel corrugated hose locknut fitting for gas as defined in claim 2, wherein: the aperture of the sealing gasket (4) is smaller than that of the corrugated hose (7).

6. A stainless steel corrugated hose locknut fitting for gas as defined in claim 1, wherein: the threaded interface (6) is provided with an external thread section matching the internal thread section.

7. A stainless steel corrugated hose locknut fitting for gas as defined in claim 1, wherein: the plugging bolt (2) is provided with an operation hole (8).

8. A stainless steel corrugated hose locknut fitting for gas as defined in claim 7, wherein: the plugging bolt (2) and the threaded hole (3) of the nut joint body (1) adopt fine threads.

9. A stainless steel corrugated hose locknut fitting for gas as defined in claim 8, wherein: the axial length of the plugging bolt (2) is smaller than or equal to the depth of the threaded hole (3).