CN213479521U - High-efficient sealed terminal coupling - Google Patents

Abstract

The utility model provides a high-efficiency sealing terminal pipe joint, which comprises a pipe joint, an end socket, a sealing snap ring and a nut, wherein the tail end of the pipe joint is provided with an insertion installation part, the inner wall of the insertion installation part is provided with an insertion cavity, the nut is installed at the tail end of the pipe joint, the nut is internally provided with the end socket, the front end of the end socket is provided with an insertion plugging part, the tail end is provided with an installation column, the insertion plugging part extends into the insertion installation part, the outer ring of the insertion plugging part is provided with a first conical surface, the first conical surface is provided with a first sealing ring which is tightly matched with the insertion cavity, the installation column penetrates through an installation hole in the nut and extends out of the end socket, the side wall of the snap ring installation groove is provided with a second sealing ring, one side of the sealing snap ring is abutted against the front end of the insertion, the pressing part is tightly matched with the second sealing ring. And by adopting a multiple sealing structure, the reliability of sealing connection can be effectively improved.

Description

High-efficient sealed terminal coupling

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of coupling, especially a high-efficient sealed terminal coupling.

[ background of the invention ]

In a closed loop of a hydraulic and pneumatic pipeline system formed by connecting standard ferrule type pipe joints, spare pipeline interfaces are required to be reserved on many occasions to meet the requirements of process flows such as exhaust, pollution discharge, shunt and the like, or pipeline interfaces are reserved to meet the requirements of pipeline maintenance. The terminal pipe joint commonly used in the market carries out conical surface O-shaped ring sealing on a solid cone, and has the defects of low pressure resistance and poor sealing reliability. The applicability of the O-ring alone is limited by the use of only a single seal. An efficient sealing of the terminal fitting is therefore proposed.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, providing a high-efficient sealed terminal coupling, adopt multiple seal structure, can improve sealing connection's reliability effectively.

In order to achieve the purpose, the utility model provides a high-efficiency sealing terminal pipe joint, which comprises a pipe joint, an end socket, a sealing snap ring and a nut, wherein the inside of the pipe joint is provided with a central through hole, the tail end of the pipe joint is provided with an insertion installation part, the inner wall of the insertion installation part is provided with an insertion cavity, the nut is installed at the tail end of the pipe joint, the nut is internally provided with the end socket, the front end of the end socket is provided with an insertion plugging part, the tail end is provided with an installation post, the insertion plugging part extends into the insertion installation part, the outer ring of the insertion plugging part is provided with a first conical surface, the first conical surface is provided with a sealing groove for installing a first sealing ring, the first sealing ring is tightly matched with the insertion cavity, the nut is internally provided with an installation hole, the installation post penetrates through the installation hole and extends out of the end, the utility model discloses a sealing device, including snap ring, sealing snap ring, second seal groove, second sealing washer, sealing snap ring installs in the snap ring mounting groove, the second seal groove has been seted up to the lateral wall of snap ring mounting groove, install the second sealing washer in the second seal groove, one side of sealing snap ring supports with the front end that inserts shutoff portion and leans on, the opposite side of sealing snap ring extends has the portion of pressing, and the portion of pressing closely cooperates with the second sealing.

Preferably, the sealing snap ring further comprises a support ring, a sealing ring and a third sealing ring, wherein the sealing ring is arranged on the outer ring of the support ring, two third sealing grooves are symmetrically formed between the outer ring of the support ring and the inner ring of the sealing ring, the third sealing ring is installed in each third sealing groove, a first compression conical surface is arranged on one side of the inner ring of the snap ring installation groove, a second compression conical surface is arranged at the front end of the inner ring of the inserted plugging part, and the first compression conical surface and the second compression conical surface are respectively and tightly matched with the third sealing rings on two sides of the sealing snap ring.

Preferably, the front side of the sealing ring is provided with a pressing part, the pressing part is an annular body, and the cross section of the pressing part is an equilateral triangle.

Preferably, first spacing ladder groove has been seted up to the front end of first conical surface, the front end that inserts the chamber has and leans on the spacing ladder portion of complex with first spacing ladder groove counterbalance, insert the chamber from the front end to the tail end footpath length crescent, insert the shutoff portion from the front end to the tail end footpath length crescent.

Preferably, the outer wall of the insertion installation part is provided with an external thread, the inner wall of the nut is provided with an internal thread installation cavity matched with the external thread, the front end of the installation hole is provided with a locking taper cavity with the diameter length gradually increased, and the front end of the installation column is provided with a locking part with the diameter length gradually increased.

Preferably, the center of the end socket is provided with a blind hole.

The utility model has the advantages that: the utility model can form the first heavy seal by matching the pipe joint, the end socket, the sealing snap ring, the nut and the like, and the first compression conical surface and the second compression conical surface are respectively and tightly matched with the third sealing rings at the two sides of the sealing snap ring; the pressing part is tightly matched with the second sealing ring, the first sealing ring is tightly matched with the insertion cavity, and second resealing can be formed, so that the connection tightness is ensured.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional view of a high-efficiency sealed terminal pipe joint according to the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

fig. 3 is a cross-sectional view of a coupling of the high efficiency sealed terminal coupling of the present invention;

fig. 4 is a schematic cross-sectional view of an end closure of a high efficiency sealed terminal fitting of the present invention;

fig. 5 is a schematic cross-sectional view of a seal ring of an efficient sealing termination fitting of the present invention.

[ detailed description ] embodiments

Referring to fig. 1 to 5, the utility model relates to a high-efficiency sealing terminal pipe joint, which comprises a pipe joint 1, an end socket 2, a sealing snap ring 3 and a nut 4, wherein a central through hole 10 is arranged inside the pipe joint 1, an insertion installation part 11 is arranged at the tail end of the pipe joint 1, an insertion cavity 111 is arranged on the inner wall of the insertion installation part 11, the nut 4 is installed at the tail end of the pipe joint 1, the end socket 2 is arranged in the nut 4, an insertion plugging part 21 is arranged at the front end of the end socket 2, an installation post 23 is arranged at the tail end, the insertion plugging part 21 extends into the insertion installation part 11, the outer ring of the insertion plugging part 21 is provided with a first conical surface 211, a sealing groove for installing a first sealing ring 22 is arranged on the first conical surface 211, the first sealing ring 22 is tightly matched with the insertion cavity 111, an installation hole 42 is arranged in the nut 4, the installation, and stretch out the outside of end head 2, insert the front end in chamber 111 and seted up snap ring mounting groove 12, sealed snap ring 3 is installed in snap ring mounting groove 12, the second seal groove has been seted up to the lateral wall of snap ring mounting groove 12, install second sealing washer 13 in the second seal groove, one side of sealed snap ring 3 supports with the front end that inserts shutoff portion 21 and leans on, the opposite side of sealed snap ring 3 extends has the portion of pressing 33, presses the portion of pressing 33 and closely cooperates with second sealing washer 13. The sealing snap ring 3 further comprises a support ring 31, a sealing ring 32 and a third sealing ring 34, the sealing ring 32 and the third sealing ring 34 are arranged on the outer ring of the support ring 31, two third sealing grooves are symmetrically formed between the outer ring of the support ring 31 and the inner ring of the sealing ring 32, the third sealing ring 34 is arranged in each third sealing groove, a first compression conical surface 14 is arranged on one side of the inner ring of the snap ring mounting groove 12, a second compression conical surface 213 is arranged at the front end of the inner ring of the inserted plugging portion 21, and the first compression conical surface 14 and the second compression conical surface 213 are respectively tightly matched with the third sealing rings 34 on two sides of the sealing snap. The front side of the sealing ring 32 is provided with a pressing part 33, and the pressing part 33 is an annular body with an equilateral triangle section. First spacing ladder groove 212 has been seted up to the front end of first conical surface 211, the front end that inserts chamber 111 has and leans on the spacing ladder portion 112 of complex with first spacing ladder groove 212 counterbalance, insert chamber 111 from the front end to the long crescent of tail end footpath, insert shutoff portion 21 from the front end to the long crescent of tail end footpath. The outer wall of the insertion installation part 11 is provided with an external thread, the inner wall of the nut 4 is provided with an internal thread installation cavity 41 matched with the external thread, the front end of the installation hole 42 is provided with a locking conical cavity 43 with the gradually increased diameter length, and the front end of the installation column 23 is provided with a locking part 231 with the gradually increased diameter length. And a blind hole 20 is formed in the center of the end sealing head 2.

The utility model discloses the working process:

the utility model relates to a high-efficient sealed terminal pipe joint, form multiple seal structure through setting up the sealed snap ring, wherein, the first compresses tightly conical surface, the second compresses tightly conical surface and closely cooperates with the third sealing washer of sealed snap ring both sides respectively, can form the first heavy seal; the pressing part is closely matched with the second sealing ring, the first sealing ring is closely matched with the insertion cavity, and second re-sealing can be formed, so that the connection tightness is guaranteed, and due to the fact that the sealing clamping ring structure is adopted, the pressing part can be pressed into the sealing ring to guarantee connection tightness, the sealing clamping ring can be used repeatedly, and even if the sealing clamping ring is damaged, replacement is convenient.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (6)

1. An efficient sealed terminal pipe joint, characterized in that: the pipe joint comprises a pipe joint (1), an end sealing head (2), a sealing clamping ring (3) and a nut (4), wherein a central through hole (10) is formed in the pipe joint (1), an insertion installation part (11) is arranged at the tail end of the pipe joint (1), an insertion cavity (111) is formed in the inner wall of the insertion installation part (11), the nut (4) is installed at the tail end of the pipe joint (1), the end sealing head (2) is arranged in the nut (4), an insertion plugging part (21) is arranged at the front end of the end sealing head (2), an installation column (23) is arranged at the tail end of the end sealing head, the insertion plugging part (21) extends into the insertion installation part (11), a first conical surface (211) is arranged on the outer ring of the insertion plugging part (21), a sealing groove for installing a first sealing ring (22) is formed in the first conical surface (211), and the first sealing ring (22) is tightly matched with, be equipped with mounting hole (42) in nut (4), mounting post (23) run through mounting hole (42) to stretch out the outside of end head (2), snap ring mounting groove (12) have been seted up to the front end that inserts chamber (111), install in snap ring mounting groove (12) sealed snap ring (3), the second seal groove has been seted up to the lateral wall of snap ring mounting groove (12), install second sealing washer (13) in the second seal groove, the one side of sealed snap ring (3) supports with the front end that inserts shutoff portion (21) and leans on, the opposite side of sealed snap ring (3) extends has pressure portion (33), and pressure portion (33) closely cooperates with second sealing washer (13).

2. A high efficiency sealed terminal fitting as defined in claim 1, wherein: sealed snap ring (3) still include support ring (31), set up in sealing ring (32) and third sealing washer (34) of the outer lane of support ring (31), two third seal grooves have been seted up to the symmetry between the outer lane of support ring (31) and the inner circle of sealing ring (32), install third sealing washer (34) in the third seal groove, one side of snap ring mounting groove (12) inner circle is equipped with first pressure tight conical surface (14), the front end that inserts shutoff portion (21) inner circle is equipped with second pressure tight conical surface (213), first pressure tight conical surface (14), second pressure tight conical surface (213) closely cooperate with third sealing washer (34) of sealed snap ring (3) both sides respectively.

3. A high efficiency sealed terminal fitting as defined in claim 2, wherein: the front side of the sealing ring (32) is provided with a pressing part (33), the pressing part (33) is an annular body, and the cross section of the pressing part is an equilateral triangle.

4. A high efficiency sealed terminal fitting as defined in claim 1, wherein: first spacing ladder groove (212) have been seted up to the front end of first toper face (211), the front end that inserts chamber (111) has and leans on complex spacing ladder portion (112) with first spacing ladder groove (212) counterbalance, insert chamber (111) from the front end to the long crescent of tail end footpath, insert shutoff portion (21) from the front end to the long crescent of tail end footpath.

5. A high efficiency sealed terminal fitting as defined in claim 1, wherein: the outer wall of inserting installation department (11) is equipped with the external screw thread, the inner wall of nut (4) is equipped with internal thread installation cavity (41) with external screw thread looks adaptation, the front end of mounting hole (42) has the locking taper chamber (43) that the footpath length is crescent, the front end of erection column (23) has locking portion (231) that the footpath length is crescent.

6. A high efficiency sealed terminal fitting as defined in claim 1, wherein: and a blind hole (20) is formed in the center of the end seal head (2).

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