阅读说明：本技术 一种万向伸缩接头 (Universal expansion joint ) 是由 李德顺 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种万向伸缩接头,包括：球头连接管、凹形球座,球头连接管与凹形球座可转动及绕动连接；所述远离球头连接管的凹形球座端可伸缩套装有伸缩管,伸缩管与凹形球座可伸缩运动；所述球头连接管和凹形球座及伸缩管的中部均设有相互连通的通孔,外部流动介质能外部从依次流经伸缩管的通孔、凹形球座通孔、球头连接管的通孔而后流出外部；抖动和变形使凹形球座与伸缩管发生可伸缩运动进而释放能量,解决了管道系统薄弱地方产生裂纹、裂缝而发生泄漏的问题；球头连接管与凹形球座可转动及绕动连接,使得刚性连接的管道变为柔性,可转动及绕动产生间隙获得让出的一定空间,解决了拆换管道之间的密封件或更换管道的部件费时费工的问题。(The invention discloses a universal expansion joint, comprising: the ball head connecting pipe is rotatably and spirally connected with the concave ball seat; the end of the concave ball seat far away from the ball head connecting pipe is telescopically sleeved with a telescopic pipe, and the telescopic pipe and the concave ball seat can do telescopic motion; the ball head connecting pipe, the concave ball seat and the middle part of the telescopic pipe are provided with mutually communicated through holes, and external flowing media can flow through the through hole of the telescopic pipe, the through hole of the concave ball seat and the through hole of the ball head connecting pipe in sequence from the outside and then flow out of the outside; the concave ball seat and the telescopic pipe can do telescopic motion by shaking and deformation to release energy, so that the problem of leakage caused by cracks and cracks at a weak place of a pipeline system is solved; the ball head connecting pipe is connected with the concave ball seat in a rotatable and winding manner, so that the pipeline in rigid connection becomes flexible, a gap is generated in the rotatable and winding manner to obtain a certain space, and the problems that the sealing element between the pipelines is disassembled or the parts of the pipelines are replaced wastes time and labor are solved.)

1. A universal expansion joint, comprising: the ball head connecting pipe (4) and the concave ball seat (3) are connected in a rotating and winding way;

an extension tube (2) is telescopically sleeved at the end, far away from the ball head connecting tube (4), of the concave ball seat (3), and the extension tube (2) and the concave ball seat (3) can telescopically move;

the middle parts of the ball head connecting pipe (4), the concave ball seat (3) and the telescopic pipe (2) are provided with through holes which are communicated with each other, and an external flowing medium can flow through the through holes of the telescopic pipe (2), the concave ball seat (3) and the ball head connecting pipe (4) in sequence and then flow out of the outside.

2. The universal expansion joint of claim 1, wherein: the spherical surface groove is established to spill ball seat (3) upper end, bulb connecting pipe (4) lower extreme is for being greater than semi-spheroidal sphere, bulb connecting pipe (4) overcoat is equipped with apron (6) of fixing at spill ball seat (3) terminal surface, and apron (6) bottom inner face is spherical surface groove, and spherical surface groove on spill ball seat (3) and the spherical surface groove on apron (6) constitute a space that supplies the rotatable and the orbit of the lower extreme spherical body of bulb connecting pipe (4).

3. The universal expansion joint of claim 1, wherein: the ball head connecting pipe (4) is screwed with the cover plate (6) through a bolt (5); the top surface of the concave ball seat (3) and the bottom surface of the cover plate (6) are provided with half-hole grooves forming through holes; the through hole that the through-hole that constitutes with half hole groove on bolt (5) corresponds the department is equipped with the through-hole, through the through-hole that half hole groove constitutes and the through-hole on bolt (5) on concave ball seat (3) and apron (6), and the through-hole that half hole groove constitutes can the steerable closing of rotatory bolt (5).

4. The universal expansion joint according to claim 3, wherein: and the outer end of the bolt (5) is screwed with a nut (7).

5. The universal expansion joint of claim 1, wherein: an annular groove is formed in the surface of the ball head connecting pipe (4) in contact with the concave ball seat (3), a nylon check ring A (10) and an O-shaped sealing ring A (9) are installed in the annular groove, and the nylon check ring A (10) is located on the O-shaped sealing ring A (9).

6. The universal expansion joint of claim 1, wherein: and a flange A (8) is fixedly welded on the end surface of the ball head connecting pipe (4) far away from the concave ball seat (3).

7. The universal expansion joint of claim 1, wherein: and a flange A (1) is fixedly welded at the end of the telescopic pipe (2) far away from the concave ball seat (3).

8. The universal expansion joint according to claim 1 or 4, wherein: and a flange A (1) is fixedly welded at the end of the telescopic pipe (2) far away from the concave ball seat (3).

9. The universal expansion joint of claim 1, wherein: the adjusting device comprises a set screw (14) which is screwed through the side wall of the telescopic pipe (2) through threads and a set nut (12) which is screwed with the set screw (14), a blank hole is formed in the contact end of the set screw (14) and the telescopic pipe (2), a compression spring (13) and a cylindrical pin (11) are installed in the blank hole, and the cylindrical pin (11) on the top of the compression spring (13) is in contact with the telescopic pipe (2); the concave ball seat (3) is provided with an annular groove corresponding to the cylindrical pin (11), and the cylindrical pin (11) can be clamped into the annular groove of the concave ball seat (3).

10. The universal expansion joint of claim 9, wherein: an annular groove is arranged on the periphery of the concave ball seat (3) contacting with the telescopic pipe (2), and a nylon retainer ring B (15) and an O-shaped sealing ring B (16) are arranged in the annular groove.

Technical Field

The invention relates to a universal expansion joint, and belongs to the technical field of mechanical joints.

Background

Firstly, in all rigidly connected pipeline systems, as the used materials in the pipeline systems are all rigid materials, the rigidly connected pipeline systems can deform when the pipelines expand with heat and contract with cold; when pressure changes occur in the pipeline system, the rigidly connected pipeline system can generate vibration, and the pipelines are rigidly connected, so that the vibration and deformation of the pipeline system caused by the vibration can be restricted, and cracks can be generated at the weakest position in the pipeline system for releasing energy, for example, the welded position can generate cracks to generate leakage;

secondly, because there is no gap between the pipes which are rigidly connected, a certain space is left by disassembling and replacing the sealing parts between the pipes or replacing the parts of the pipes, which can not operate the large-scale pipe system and the pipe system with good rigidity by deforming and leaving the gap, thus leading to the incapability of replacing; or only the pipeline system can be cut into a plurality of sections, and the pipeline system is connected after the sealing elements or the pipeline parts are replaced, so that the time and labor are wasted, and the disassembly, assembly and replacement of parts are inconvenient.

Disclosure of Invention

In order to solve the technical problem, the invention provides a universal expansion joint.

The invention is realized by the following technical scheme.

The invention provides a universal expansion joint, comprising: the ball head connecting pipe is rotatably and spirally connected with the concave ball seat;

the end of the concave ball seat far away from the ball head connecting pipe is telescopically sleeved with a telescopic pipe, and the telescopic pipe and the concave ball seat can do telescopic motion;

the ball head connecting pipe, the concave ball seat and the middle part of the telescopic pipe are provided with through holes which are communicated with each other, and an external flowing medium can flow through the through hole of the telescopic pipe, the through hole of the concave ball seat and the through hole of the ball head connecting pipe in sequence and then flow out of the telescopic pipe.

The invention has the beneficial effects that: the rigidly connected pipeline system generates vibration, shaking and deformation to enable the concave ball seat and the telescopic pipe to do telescopic motion so as to release energy, and the problem of leakage caused by cracks and cracks at the weak part of the pipeline system is solved;

the ball head connecting pipe is connected with the concave ball seat in a rotatable and winding manner, so that the pipeline in rigid connection becomes flexible, a gap can be generated by rotation and winding to obtain a certain space, and the problems that the time and the labor are wasted when a sealing element between the pipelines is disassembled or parts of the pipelines are replaced are solved.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

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

FIG. 3 is an enlarged partial schematic view at B of FIG. 1;

FIG. 4 is an enlarged partial schematic view at D of FIG. 1;

in the figure: 1-flange a; 2-a telescopic pipe; 3-a concave ball seat; 4-ball head connecting pipe; 5-bolt; 6-cover plate; 7-a nut; 8-flange A; 9-O-shaped sealing ring A; 10-nylon retainer ring A; 11-cylindrical pin; 12-tightening the nut; 13-a compression spring; 14-set screws; 15-nylon retainer ring B; and 16-O-shaped sealing ring B.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

See fig. 1-4.

The invention provides a universal expansion joint, comprising: the ball head connecting pipe 4 is rotatably and spirally connected with the concave ball seat 3;

an extension tube 2 is telescopically sleeved at the end of the concave ball seat 3 far away from the ball head connecting tube 4, and the extension tube 2 and the concave ball seat 3 can telescopically move;

the ball head connecting pipe 4, the concave ball seat 3 and the telescopic pipe 2 are provided with through holes communicated with each other at the middle parts, and an external flowing medium can flow out of the outside from the through hole of the telescopic pipe 2, the through hole of the concave ball seat 3 and the through hole of the ball head connecting pipe 4 sequentially.

The rigidly connected pipeline system generates vibration, shaking and deformation to enable the concave ball seat 3 and the telescopic pipe 2 to do telescopic motion so as to release energy, and the problem of leakage caused by cracks and cracks at the weak part of the pipeline system is solved;

the ball head connecting pipe 4 is rotatably and rotationally connected with the concave ball seat 3, so that the rigidly connected pipeline becomes flexible, a gap can be generated by rotation and rotation to obtain a certain space, and the problems of time and labor waste in detaching and replacing sealing elements between pipelines or replacing parts of the pipeline are solved.

The spherical surface recess is established to 3 upper ends of spill ball seats, 4 lower extremes of bulb connecting pipe are for being greater than half spheroidal sphere, 4 overcoat of bulb connecting pipe are equipped with and fix apron 6 at 3 terminal surfaces of spill ball seats, and 6 bottom inner faces of apron are the spherical surface recess, and spherical surface recess on the spill ball seat 3 and the spherical surface recess on the apron 6 constitute a space that supplies the rotatable and the wraparound of lower extreme spherical body of bulb connecting pipe 4, realize that bulb connecting pipe 4 and spill ball seat 3 are rotatable and the wraparound is connected.

The ball head connecting pipe 4 is screwed with the cover plate 6 through a bolt 5.

The top surface of the concave ball seat 3 and the bottom surface of the cover plate 6 are both provided with half-hole grooves forming through holes; the through hole corresponding to the through hole formed by the half hole groove is arranged on the bolt 5, lubricating media such as lubricating oil are input to the rotating surfaces of the ball head connecting pipe 4, the concave ball seat 3 and the cover plate 6 through the through hole formed by the concave ball seat 3 and the upper half hole groove of the cover plate 6 and the through hole on the bolt 5, impurities generated by rotation and orbital abrasion are discharged outwards through the through hole channel, and the rotating bolt 5 can be controlled to close the channel.

The outer end of the bolt 5 is provided with a nut 7 in a screwing mode, and the bolt 5 and the nut 7 are convenient to fixedly connect and install.

An annular groove is formed in the surface of the ball head connecting pipe 4, which is in contact with the concave ball seat 3, a nylon check ring A10 and an O-shaped sealing ring A9 are installed in the annular groove, and the nylon check ring A10 is located above the O-shaped sealing ring A9, so that the service life of the O-shaped sealing ring is prolonged, and the sealing pressure of the O-shaped sealing ring is improved.

And a flange A8 is fixedly welded on the end surface of the ball head connecting pipe 4 far away from the concave ball seat 3, so that the ball head connecting pipe is conveniently communicated with a pipeline through a flange A8.

And a flange A1 is fixedly welded at the end of the extension tube 2 far away from the concave ball seat 3, so that the extension tube is conveniently communicated with a pipeline through the flange A1.

The periphery of the concave ball seat 3 is telescopically sleeved on the inner surface of the telescopic pipe 2; and an adjusting device for adjusting the telescopic sleeving force of the concave ball seat 3 and the telescopic pipe 2 is arranged on the side wall of the telescopic pipe 2.

The adjusting device comprises a set screw 14 screwed through the side wall of the telescopic pipe 2 through threads and a set nut 12 screwed with the set screw 14, a closed hole is formed in the contact end of the set screw 14 and the telescopic pipe 2, a compression spring 13 and a cylindrical pin 11 are installed in the closed hole, the cylindrical pin 11 on the top of the compression spring 13 is in contact with the telescopic pipe 2, and the telescopic sleeving force of the concave ball seat 3 and the telescopic pipe 2 is adjusted; the concave ball seat 3 is provided with an annular groove corresponding to the cylindrical pin 11, when the extension tube 2 extends to a certain length, the cylindrical pin 11 is clamped in the annular groove of the concave ball seat 3, and the extension tube cannot extend and retract any more, so that the extension tube 2 is prevented from extending beyond a certain range to cause the concave ball seat 3 to be disconnected with the extension tube 2 to generate leakage.

An annular groove is arranged on the periphery of the concave ball seat 3, which is in contact with the extension tube 2, a nylon check ring B15 and an O-shaped sealing ring B16 are arranged in the annular groove, and the two can do linear motion along the axial direction. The sealing is performed by an O-shaped sealing ring 16, and a nylon check ring 15 is added on the O-shaped sealing ring 16 to increase the durability and the sealing pressure. The nylon retainer ring prevents the O-ring 16 from being broken by being forced into the gap.