CN218883247U

CN218883247U - Round pipe connecting structure

Info

Publication number: CN218883247U
Application number: CN202223162361.5U
Authority: CN
Inventors: 李泽彬; 金浩天
Original assignee: Shanghai Z&h Electronic Co ltd; Shanghai Zhonghong Semiconductor Equipment Co ltd
Current assignee: Shanghai Z&h Electronic Co ltd; Shanghai Zhonghong Semiconductor Equipment Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-04-18
Anticipated expiration: 2032-11-28

Abstract

The utility model belongs to the technical field of the pipe connection, a pipe connection structure is disclosed. Pipe connection structure is used for connecting first pipe and second pipe, and the tip of first pipe is provided with the pipe external screw thread, and pipe connection structure includes gland nut and fixation nut, is provided with first internal thread and first external screw thread on the gland nut, and the pipe external screw thread can fit in first internal thread soon. Fixation nut joint is provided with the second internal thread in the tip of second pipe on the fixation nut, and in first external screw thread can fit the second internal thread soon, twist to change fixation nut and can make gland nut support to press on the terminal surface of second pipe. Through setting up pipe connection structure into gland nut and fixation nut threaded connection's form, occupation space is less, only need during the erection joint moreover with the spanner twist change fixation nut can, convenient operation just need not very big operating space, be favorable to adapting to semiconductor equipment's miniaturized design.

Description

Round pipe connecting structure

Technical Field

The utility model relates to a pipe connection technical field especially relates to pipe connection structure.

Background

The development of current technologies and semiconductor devices enter a new stage, generally requiring small device size and meeting the current requirements of semiconductor device production technology.

Two circular tubes are often required to be connected in a sealing mode in semiconductor equipment, the existing connecting structure is large in size, a large operation space is required during assembly, and the semiconductor equipment cannot be adapted to the miniaturization design of the semiconductor equipment.

Therefore, it is desirable to improve the circular tube connecting structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipe connection structure, the volume is less, also need not very big operating space during the assembly.

To achieve the purpose, the utility model adopts the following technical proposal:

pipe connection structure for connect first pipe and second pipe, the tip of first pipe is provided with the pipe external screw thread, pipe connection structure includes:

the compression nut is provided with a first internal thread and a first external thread, and the external thread of the circular tube can be screwed in the first internal thread;

fixation nut, the joint in the tip of second pipe, the last second internal thread that is provided with of fixation nut, first external screw thread can fit soon in the second internal thread, twist and change fixation nut can make compression nut support press in on the terminal surface of second pipe.

As an alternative, the round pipe connecting structure further includes:

and the sealing element is clamped between the compression nut and the second circular tube.

Alternatively, the seal is a sealing ring.

As an alternative, the sealing ring is made of a plastic material.

Alternatively, the compression nut has an inner diameter smaller than an inner diameter of the fixing nut.

Alternatively, the compression nut has an inner diameter no smaller than the inner diameter of the second tube.

Alternatively, the outer diameter of the end of the compression nut that abuts against the second round tube is not larger than the outer diameter of the second round tube.

As an alternative, the second round tube comprises a round tube main body and a first limiting table, the first limiting table is arranged on the outer side wall of the round tube main body, a second limiting table is arranged on the inner wall of the fixing nut, the second limiting table is arranged at one end, far away from the fixing nut, of the pressing nut, the second limiting table can be clamped at one side, far away from the pressing nut, of the first limiting table, a limiting groove is formed in the inner wall, close to one end of the pressing nut, of the fixing nut, and a second internal thread is arranged at the limiting groove.

Alternatively, the first limit table is flush with the end face of the round pipe main body.

As an alternative scheme, the compression nut and the compression nut are both made of non-ferrous metal materials.

Has the beneficial effects that:

the utility model provides a pipe connection structure, when connecting first pipe and second pipe, earlier overlap fixation nut on the second pipe, make gland nut press in the tip of second pipe, then twist and change fixation nut, make fixation nut and gland nut threaded connection, along with twist and change fixation nut, gland nut compresses tightly gradually in the tip of second pipe, again with first pipe screw in gland nut to realize the connection of first pipe and second pipe. Through setting up pipe connection structure into two nut threaded connection's form, occupation space is less, only need during the erection joint moreover with the spanner twist change fixation nut can, convenient operation just need not very big operating space, be favorable to adapting to semiconductor equipment's miniaturized design.

Drawings

Fig. 1 is an assembly structure diagram of a round pipe connection structure provided by an embodiment of the present invention;

fig. 2 is a schematic view of a disassembled structure of the round pipe connection structure provided in the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a fixing nut according to an embodiment of the present invention.

In the figure:

100. a first circular tube; 110. a round pipe external thread; 200. a second circular tube; 210. a circular tube body; 220. a first limit table;

1. a compression nut; 2. fixing a nut; 21. a second limit table; 22. a limiting groove; 3. and a seal.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 and 2, the present embodiment provides a circular pipe connecting structure for connecting a first circular pipe 100 and a second circular pipe 200, wherein an end of the first circular pipe 100 is provided with a circular pipe external thread 110. Specifically, pipe connection structure includes gland nut 1 and fixation nut 2, is provided with first internal thread and first external screw thread on the gland nut 1, and pipe external screw thread 110 can fit in first internal thread soon. 2 joints of fixation nut in the tip of second pipe 200, the last second internal thread that is provided with of fixation nut 2, in first external screw thread can fit the second internal thread soon, twist to change fixation nut 2 and can make gland nut 1 support to press on the terminal surface of second pipe 200.

The pipe connection structure that this embodiment provided, when connecting first pipe 100 and second pipe 200, earlier overlap fixation nut 2 on second pipe 200, make gland nut 1 press in the tip of second pipe 200, then twist and change fixation nut 2, make fixation nut 2 and gland nut 1 threaded connection, along with twist and change fixation nut 2, gland nut 1 compresses tightly gradually in the tip of second pipe 200, again with first pipe 100 screw in gland nut 1 in, thereby realize the connection of first pipe 100 and second pipe 200. Through setting up pipe connection structure into two nut threaded connection's form, occupation space is less, only need during the erection joint moreover with the spanner twist change fixation nut 2 can, convenient operation just need not very big operating space, be favorable to adapting to semiconductor equipment's miniaturized design.

Preferably, as shown in fig. 2, the circular tube connecting structure further includes a sealing member 3, and the sealing member 3 is interposed between the compression nut 1 and the second circular tube 200, so as to achieve better connection sealing performance between the first circular tube 100 and the second circular tube 200. Specifically, the sealing element 3 may be a sealing ring, and the sealing ring may be directly placed at an end of the second circular tube 200 or an end of the compression nut 1, which is relatively convenient to install. Of course, the specific form of the sealing element 3 is not limited here, and the sealing element 3 may also be a sealing gasket, a sealant, or the like, and may have a sealing effect.

Optionally, the sealing washer adopts the plastic material preparation to form, and sealed effect is better. The compression nut 1 and the fixing nut 2 are made of non-ferrous metal materials, and the non-ferrous metal materials can be brass or red copper, so that the compression nut 1 and the fixing nut 2 can bear certain load and have a good anti-corrosion effect.

Further, the inner diameter of the compression nut 1 is smaller than that of the fixing nut 2, so that the circular tube connecting structure can connect two circular tubes with different outer diameters. For example, the first round pipe 100 has an outer diameter of 38mm, and the second round pipe 200 has an outer diameter of 44mm, and the round pipe connection structure of the present embodiment can be used to achieve connection.

Further, the inner diameter of the compression nut 1 is not smaller than the inner diameter of the second circular tube 200, so that when the end of the compression nut 1 abuts against the second circular tube 200, the second circular tube 200 is not blocked, and the circulation capacity of the second circular tube 200 is ensured.

Further, the outer diameter of the end, which abuts against the second circular tube 200, of the compression nut 1 is not larger than the outer diameter of the second circular tube 200, so that the volume of the compression nut 1 is reduced to a greater extent under the condition that the compression nut 1 is ensured to fully abut against the second circular tube 200, and the miniaturization of the circular tube connecting structure is facilitated.

Optionally, as shown in fig. 2 and fig. 3, the second round tube 200 includes a round tube main body 210 and a first limit table 220, the first limit table 220 is disposed on an outer side wall of the round tube main body 210, a second limit table 21 is disposed on an inner wall of the fixing nut 2, the second limit table 21 is disposed at an end of the fixing nut 2 away from the compression nut 1, the second limit table 21 and a side of the first limit table 220 away from the compression nut 1 are clamped, a limit groove 22 is formed on an inner wall of the fixing nut 2 close to the end of the compression nut 1, a second internal thread is disposed at the limit groove 22, and the fixing nut 2 is limited by cooperation of the first limit table 220 and the second limit table 21, so that the fixing nut 2 can be locked with the compression nut 1.

Preferably, as shown in fig. 2, the first limit stop 220 is flush with the end surface of the round tube main body 210, so that the first limit stop 220 is as close to the compression nut 1 as possible, thereby reducing the axial length of the fixing nut 2.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Pipe connection structure for connect first pipe (100) and second pipe (200), the tip of first pipe (100) is provided with pipe external screw thread (110), its characterized in that, pipe connection structure includes:

the pressing nut (1) is provided with a first internal thread and a first external thread, and the circular pipe external thread (110) can be screwed in the first internal thread;

fixing nut (2), the joint in the tip of second pipe (200), be provided with the second internal thread on fixing nut (2), first external screw thread can fit soon in the second internal thread, twist and change fixing nut (2) can make gland nut (1) support press in on the terminal surface of second pipe (200).

2. The round pipe connection structure as claimed in claim 1, further comprising:

and the sealing element (3) is clamped between the compression nut (1) and the second circular tube (200).

3. A round pipe connection structure as claimed in claim 2, wherein the sealing member (3) is a gasket ring.

4. A round tube connection structure as in claim 3, wherein the seal ring is made of a plastic material.

5. A round pipe connecting structure as defined in claim 1, wherein the compression nut (1) has an inner diameter smaller than that of the fixing nut (2).

6. The round pipe connecting structure according to claim 5, wherein the inner diameter of the compression nut (1) is not smaller than the inner diameter of the second round pipe (200).

7. The round tube connecting structure according to claim 6, wherein an outer diameter of an end of the compression nut (1) that presses against the second round tube (200) is not larger than an outer diameter of the second round tube (200).

8. The round pipe connecting structure according to any one of claims 1 to 7, wherein the second round pipe (200) comprises a round pipe main body (210) and a first limiting table (220), the first limiting table (220) is arranged on an outer side wall of the round pipe main body (210), a second limiting table (21) is arranged on an inner wall of the fixing nut (2), the second limiting table (21) is arranged at one end, far away from the compression nut (1), of the fixing nut (2), the second limiting table (21) can be clamped at one side, far away from the compression nut (1), of the first limiting table (220), a limiting groove (22) is formed in an inner wall, close to one end of the compression nut (1), of the fixing nut (2), and the second internal thread is arranged at the limiting groove (22).

9. The round tube connecting structure according to claim 8, wherein the first stopper (220) is flush with an end surface of the round tube main body (210).

10. A circular tube connecting structure as claimed in any one of claims 1 to 7, wherein the compression nut (1) and the fixing nut (2) are both made of non-ferrous metal.