CN213393965U

CN213393965U - Loose nut structure for connecting threaded valve with stainless steel thin-walled pipe

Info

Publication number: CN213393965U
Application number: CN202022407290.5U
Authority: CN
Inventors: 卓文清
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-06-08
Anticipated expiration: 2030-10-27

Abstract

The utility model provides a loop nut structure for stainless steel thin wall pipe connection screw valve, stainless steel thin wall pipe (1) one end tip welding has loop head (2), and loop nut (3) and valve (5) one end screw thread threaded connection, stainless steel thin wall pipe (1) passes loop nut (3) and makes loop head (2) be located between loop nut (3) and valve (5). The utility model has the advantages that: the welding area of the stainless steel thin-wall pipe and the annular head is small, and the damage to the internal structure of a welding head material is small; meanwhile, the loop nut is directly sleeved on the loop head, so that a middle conversion joint is omitted, the occupied space is small, and the cost is low; after a plurality of intermediate joints are omitted, the leakage probability is greatly reduced, and the overall sealing performance is better. It is more comprehensive, the utility model discloses the structure is not only simple and convenient to operate, and the leakproofness is better moreover.

Description

Loose nut structure for connecting threaded valve with stainless steel thin-walled pipe

Technical Field

The utility model relates to a valve connection field, concretely relates to loop nut structure that is used for stainless steel thin wall union coupling screw thread valve.

Background

At present, the connection of the existing stainless steel thin-walled pipe and an external thread valve is mainly composed of the stainless steel thin-walled pipe, a movable joint, an intermediate joint, a thread adapter, a sealing gasket and the external thread valve; one end of the stainless steel thin-wall pipe is welded with one end of the movable joint, the other end of the movable joint is provided with external threads and is connected with the intermediate joint, the intermediate joint is connected with the thread adapter, and the internal threads at the other end of the thread adapter are connected with the external threads of the valve. The welding area of the stainless steel thin-wall pipe and the movable joint is large, the thin-wall pipe is easy to burn through by large-area welding, and the tissue stability of the stainless steel material is easy to damage; meanwhile, the sealing performance of the pipe joint is reduced due to the excessive number of the joints, and the possibility of leakage of the pipe is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a loop nut structure for a stainless steel thin-wall pipe connecting threaded valve, aiming at the defects at present.

The utility model comprises a valve with screw thread openings at two ends, wherein both ends of the valve are provided with stainless steel thin-wall pipe connecting structures which comprise stainless steel thin-wall pipes and loop nuts,

one end part of the stainless steel thin-wall pipe is welded with a ring-shaped head,

the loop nut is connected with one end of the valve through screw thread,

the stainless steel thin-wall pipe penetrates through the loop nut and enables the annular head to be located between the loop nut and the valve.

The annular head is welded with the stainless steel thin-wall pipe to form the stainless steel thin-wall pipe with the T-shaped cross section.

The loop nut is in threaded connection with one end of the valve, and rotates on the valve thread through the loop nut to enable the annular head to move towards the valve.

The end face position of the annular head exceeds the end face position of the stainless steel thin-wall pipe.

The sealing gasket is arranged in the loop nut and is positioned between the loop head and the valve.

The utility model has the advantages that: the welding area of the stainless steel thin-wall pipe and the annular head is small, and the damage to the internal structure of a welding head material is small; meanwhile, the loop nut is directly sleeved on the loop head, so that a middle conversion joint is omitted, the occupied space is small, and the cost is low; after a plurality of intermediate joints are omitted, the leakage probability is greatly reduced, and the overall sealing performance is better. It is more comprehensive, the utility model discloses the structure is not only simple and convenient to operate, and the leakproofness is better moreover.

Description of the drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is an enlarged view of the portion A of the drawing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention usually place when using, the present invention is only used for convenience of description and simplification of the description, but does not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and thus, the present invention should not be construed as being limited. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in the figure, the utility model comprises a valve 5 with screw thread openings at two ends, wherein both ends of the valve 5 are provided with stainless steel thin-wall pipe connecting structures, the stainless steel thin-wall pipe connecting structures comprise a stainless steel thin-wall pipe 1 and a loop nut 3,

the annular head 2 is welded at one end of the stainless steel thin-wall pipe 1, the welding area of the stainless steel thin-wall pipe 1 and the annular head 2 is small, and the damage to the internal tissue of a welding head material is small;

the loop nut 3 is in threaded connection with one end of the valve 5,

the stainless steel thin-wall pipe 1 penetrates through the loop nut 3 and enables the loop head 2 to be located between the loop nut 3 and the valve 5. The loop nut 3 is directly sleeved on the annular head 2, so that a middle conversion joint is omitted, the occupied space is small, and the cost is low;

the annular head 2 is welded with the stainless steel thin-wall pipe 1 to form the stainless steel thin-wall pipe 1 with a T-shaped cross section.

The loop nut 3 is in threaded connection with one end of the valve 5, and the loop nut 3 rotates on the thread of the valve 5 to enable the annular head 2 to move towards the valve 5.

The end surface position of the annular head 2 exceeds the end surface position of the stainless steel thin-wall pipe 1.

A sealing gasket 4 is arranged in the loop nut 3 and is positioned between the loop head 2 and the valve 5.

The installation method comprises the steps of firstly sleeving the loop nut into the stainless steel thin-walled tube 1, then sleeving the loop head 2 into one end of the stainless steel thin-walled tube 1, then welding the loop head 2 and the stainless steel thin-walled tube 1, ensuring the complete fixation and sealing of the welding position, then tensioning the loop nut 3 to lean against the inner side of the loop head 2, placing the sealing gasket 4 into the loop nut 3, and finally screwing the loop nut 3 and the external thread valve 5 in a threaded manner.

Claims

1. A loop nut structure for connecting a threaded valve with a stainless steel thin-wall pipe comprises a valve (5) with threaded openings at two ends, and is characterized in that the two ends of the valve (5) are respectively provided with a stainless steel thin-wall pipe connecting structure, the stainless steel thin-wall pipe connecting structure comprises a stainless steel thin-wall pipe (1) and a loop nut (3),

one end part of the stainless steel thin-wall pipe (1) is welded with a ring-shaped head (2),

the loop nut (3) is in threaded connection with one end of the valve (5),

the stainless steel thin-walled tube (1) penetrates through the loop nut (3) and enables the annular head (2) to be located between the loop nut (3) and the valve (5).

2. The loose nut structure for the threaded valve connected with the stainless steel thin-walled pipe according to claim 1, characterized in that the annular head (2) is welded with the stainless steel thin-walled pipe (1) to form the stainless steel thin-walled pipe (1) with a T-shaped cross section.

3. The loop nut structure for the stainless steel thin-walled pipe connecting threaded valve according to claim 1, characterized in that the loop nut (3) is in threaded connection with one end of the valve (5) and is rotated on the valve (5) thread through the loop nut (3) to move the ring-shaped head (2) towards the valve (5).

4. The union nut structure for the stainless steel thin-walled pipe connecting threaded valve according to claim 1, characterized in that the end face position of the annular head (2) exceeds the end face position of the stainless steel thin-walled pipe (1).

5. The structure of the loose nut for the stainless steel thin-walled pipe connecting threaded valve according to claim 1, characterized in that a sealing gasket (4) is placed in the loose nut (3) and is positioned between the ring-shaped head (2) and the valve (5).