CN209943736U

CN209943736U - High-pressure hydraulic pipe fitting sealing joint

Info

Publication number: CN209943736U
Application number: CN201920418603.1U
Authority: CN
Inventors: 李助业
Original assignee: Ningbo Fenghua Gaoxin Compaq Hydraulic Co Ltd
Current assignee: Ningbo Fenghua Gaoxin Compaq Hydraulic Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-01-14
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a high-pressure hydraulic pressure pipe fitting sealing joint, including sleeve pipe, spring and sleeve pipe both ends swing joint and be two connecting portion, two O type rubber rings and two annular pressing plates of symmetrical arrangement, the annular chamber has been seted up to the cover intraductal, be equipped with communicating pipe on the connecting portion, the one end of communicating pipe extends to the sheathed tube annular intracavity and welds and have annular limiting plate, annular limiting plate's outside side and annular chamber inside wall are transition fit and connect. The utility model discloses in, when sealing up, high pressure oil when connecting through this, two ring clamp plate of high pressure extrusion, two ring clamp plate extrusion O type rubber ring, O type rubber ring warp the back, realize sealed, pressure is higher sealed effect better, and O type rubber ring mainly bears ring clamp plate axial extrusion simultaneously, can avoid appearing too big closing pressure and lead to O type rubber ring to damage to influence sealed from this.

Description

High-pressure hydraulic pipe fitting sealing joint

Technical Field

The utility model relates to a hydraulic pressure coupling seals technical field, especially relates to high pressure hydraulic pressure pipe fitting sealing joint.

Background

The hydraulic pipe joint is a part for connecting a high-pressure oil pipe and a high-pressure oil pipe in a hydraulic system. The hydraulic pipe joint can be divided into a hydraulic hose, a high-pressure ball valve, a quick joint, a ferrule type pipe joint, a welded type pipe joint, a high-pressure hose, a transition type pipe joint, a ferrule type pipe joint, a three-way type pipe joint, a non-standard type pipe joint, a flared type pipe joint, a right-angle type pipe joint, a rotary type pipe joint, a quick joint, a stainless steel pipe joint and a copper joint.

Wherein transition formula coupling and rotation type coupling are comparatively commonly used, because hydraulic line bears the higher system pressure of transmission, during the installation of transition formula coupling, realize sealed installation after closing soon through the big moment of torsion of screw usually, because transition formula coupling adopts the integral type structure, can't realize the direct butt joint of pipeline, need the order installation, it is comparatively time-consuming and energy-consuming, during the installation of rotation type coupling, there is the sealing washer in rotatory combination department, too big spiral closure force leads to the sealing washer to close the damage soon easily to influence sealed effect.

Therefore, the utility model provides a high pressure hydraulic pressure pipe fitting sealing joint.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the sealing joint of the high-pressure hydraulic pipe fitting is provided for solving the problems that the high-pressure connection screwing force is large, the installation is laborious, and the sealing gasket is damaged to influence the sealing when the high-pressure connection screwing force is excessive and the torque is excessive.

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

high-pressure hydraulic pressure pipe fitting sealing joint, including sleeve pipe, spring and sleeve pipe both ends swing joint and be two connecting portion, two O type rubber ring and two annular clamp plates of symmetrical arrangement, the annular chamber has been seted up in the sleeve pipe, be equipped with communicating pipe on the connecting portion, the one end of communicating pipe extends to sheathed tube annular intracavity and welds and have annular limiting plate, the outside side and the annular chamber inside wall of annular limiting plate are transition fit and connect, the spring holding is in the annular chamber, two the annular clamp plate holding is in the annular chamber and is located the both ends of spring, O type rubber ring holding is in the annular chamber and is located between annular limiting plate and the annular clamp plate.

As a further description of the above technical solution:

and a conical surface is arranged at the opening part of one side of the annular pressing plate, which is positioned on the spring.

As a further description of the above technical solution:

and a limiting pipe is welded on one side, close to the O-shaped rubber ring, of the annular limiting plate.

As a further description of the above technical solution:

the outer diameter of the limiting pipe and the inner diameter of the O-shaped rubber ring are in interference fit.

As a further description of the above technical solution:

the outer diameter of the O-shaped rubber ring is in interference fit with the inner diameter of the annular cavity.

As a further description of the above technical solution:

and an outer hexagon is arranged on the outer side of the communicating pipe outside the sleeve.

As a further description of the above technical solution:

the communicating pipe is internally provided with a conical internal thread.

As a further description of the above technical solution:

one side of the communicating pipe, which is positioned on the annular limiting plate in the annular cavity, is sleeved with a rubber cushion.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, when sealing up, high pressure oil when connecting through this, two ring clamp plate of high pressure extrusion, two ring clamp plate extrusion O type rubber ring, O type rubber ring warp the back, realize sealed, pressure is higher sealed effect better, and O type rubber ring mainly bears ring clamp plate axial extrusion simultaneously, can avoid appearing too big closing pressure and lead to O type rubber ring to damage to influence sealed from this.

2. The utility model discloses in, the one end of two communicating pipes is located the intraductal welding of cover and has set up O type rubber ring between two annular limiting plate and two annular pressing plates, is equipped with a spring between two annular pressing plates, but two communicating pipes relative sleeve pipe rotatory to can be alone with the pipeline butt joint, need not too big power of revolving, laborsaving.

Drawings

Fig. 1 is a schematic structural view of a high-pressure hydraulic pipe fitting sealing joint provided by the present invention;

fig. 2 is an explosion structure diagram of the high-pressure hydraulic pipe fitting sealing joint provided by the utility model;

fig. 3 is the utility model provides a high pressure hydraulic pressure pipe fitting sealing joint's ring clamp plate structure sketch map.

Illustration of the drawings:

1. a sleeve; 2. a spring; 3. a connecting portion; 4. an O-shaped rubber ring; 5. an annular pressure plate; 6. an annular cavity; 7. a communicating pipe; 8. an annular limiting plate; 9. a conical surface; 10. a limiting pipe; 11. an outer hexagon; 12. a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a high-pressure hydraulic pipe fitting sealing joint comprises a sleeve 1, a spring 2, two connecting parts 3, two O-shaped rubber rings 4 and two annular pressing plates 5, wherein the two connecting parts 3 are movably connected with the two ends of the sleeve 1 and are symmetrically arranged, an annular cavity 6 is formed in the sleeve 1, a communicating pipe 7 is arranged on each connecting part 3, one end of each communicating pipe 7 extends into the annular cavity 6 of the sleeve 1 and is welded with an annular limiting plate 8, the outer side of each annular limiting plate 8 is connected with the inner side wall of the annular cavity 6 in a transition fit manner, the spring 2 is accommodated in the annular cavity 6, the two annular pressing plates 5 are accommodated in the annular cavity 6 and are positioned at the two ends of the spring 2, the O-shaped rubber rings 4 are accommodated in the annular cavity 6 and are positioned between the annular limiting plates 8 and the annular pressing plates 5, high-pressure oil pushes the two annular pressing plates 5 to move in opposite directions to extrude the O, the larger the oil pressure is, the larger the deformation of the O-shaped rubber ring 4 is, and the better the sealing effect is.

Specifically, as shown in fig. 3, a tapered surface 9 is provided at an opening of the annular pressure plate 5 at one side of the spring 2, and the tapered surface 9 plays a role of guiding the high-pressure oil after the circulated high-pressure oil enters the annular cavity 6 of the casing 1.

Specifically, as shown in fig. 2, a limiting pipe 10 is welded on one side of the annular limiting plate 8, which is close to the O-shaped rubber ring 4, and the limiting pipe 10 plays a role of guiding and auxiliary supporting, and can limit the deformation of the O-shaped rubber ring 4 towards the axis.

Specifically, as shown in fig. 1, the outer diameter of the limiting pipe 10 is in interference fit with the inner diameter of the O-shaped rubber ring 4, and the inner diameter of the O-shaped rubber ring 4 is smaller than the outer diameter of the limiting pipe 10, so that the sealing is facilitated.

Specifically, as shown in fig. 1, the outer diameter of the O-ring 4 and the inner diameter of the annular cavity 6 are in interference fit, and the O-ring 4 is in a state of extruding the annular cavity 6, so that the O-ring is convenient to extrude and seal.

Specifically, as shown in fig. 2, an outer hexagon 11 is disposed on the outer side of the communication pipe 7 located outside the casing 1, so that the wrench can be conveniently used for rotating operation.

Specifically, as shown in fig. 2, a tapered internal thread is provided in the communication pipe 7, and the tapered internal thread is suitable for connection with an external tapered thread.

Specifically, as shown in fig. 1, a rubber gasket 12 is sleeved on one side of the communicating pipe 7, which is located inside the annular cavity 6 and is used for connecting the annular limiting plate 8 and the two ends of the annular cavity 6 in a sealing manner.

The working principle is as follows: during the use, use the spanner, with the help of outer hexagonal 11, utilize its toper internal thread and outside pipeline intercommunication with two communicating pipes 7 at sleeve pipe 1 both ends, at this moment because two communicating pipes 7 can be rotatory relatively sleeve pipe 1, from this with convenient and the outside pipeline at both ends dock alone, treat to close the completion back soon, spring 2 in annular chamber 6 is in two annular clamp plates 5 of extrusion all the time, keep warping encapsulated situation, when the high-pressure oil circulation in the system this moment, high-pressure oil extrudees annular clamp plate 5 to both sides in annular chamber 6, two annular clamp plates 5 move extrusion O type rubber ring 4 in the opposite direction, O type rubber ring 4 warp and realizes the clearance between shutoff communicating pipe 7 and the sleeve pipe 1, the oil pressure is big more, O type rubber ring 4 warp more.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A high-pressure hydraulic pipe fitting sealing joint comprises a sleeve (1), a spring (2), two connecting parts (3) which are movably connected with the two ends of the sleeve (1) and are symmetrically arranged, two O-shaped rubber rings (4) and two annular pressing plates (5), it is characterized in that an annular cavity (6) is arranged in the sleeve (1), a communicating pipe (7) is arranged on the connecting part (3), one end of the communicating pipe (7) extends into the annular cavity (6) of the sleeve (1) and is welded with an annular limiting plate (8), the outer side of the annular limiting plate (8) is in transition fit connection with the inner side wall of the annular cavity (6), the spring (2) is accommodated in the annular cavity (6), the two annular pressure plates (5) are accommodated in the annular cavity (6) and positioned at two ends of the spring (2), the O-shaped rubber ring (4) is accommodated in the annular cavity (6) and is positioned between the annular limiting plate (8) and the annular pressing plate (5).

2. The high-pressure hydraulic pipe sealing joint as claimed in claim 1, wherein a side opening of the annular pressure plate (5) on the spring (2) is provided with a conical surface (9).

3. The high-pressure hydraulic pipe sealing joint according to claim 1, wherein a limiting pipe (10) is welded on one side of the annular limiting plate (8) close to the O-shaped rubber ring (4).

4. The high-pressure hydraulic pipe fitting sealing joint as claimed in claim 3, wherein the outer diameter of the limiting pipe (10) and the inner diameter of the O-shaped rubber ring (4) are in interference fit.

5. The high-pressure hydraulic pipe sealing joint as claimed in claim 1, wherein the outer diameter of the O-shaped rubber ring (4) and the inner diameter of the annular cavity (6) are in interference fit.

6. The high-pressure hydraulic pipe fitting sealing joint as claimed in claim 1, characterized in that an outer hexagonal socket (11) is provided on the outer side of the communication pipe (7) outside the casing (1).

7. The high-pressure hydraulic pipe fitting sealing joint as claimed in claim 1, wherein a tapered internal thread is provided in the communicating pipe (7).

8. The high-pressure hydraulic pipe fitting sealing joint as claimed in claim 1, wherein a rubber gasket (12) is sleeved on one side of the communicating pipe (7) which is positioned on the annular limiting plate (8) in the annular cavity (6).