CN209925793U

CN209925793U - Pipeline quick connector

Info

Publication number: CN209925793U
Application number: CN201920378478.6U
Authority: CN
Inventors: 宁允展; 王国良; 苏士超; 王泽庆; 孙中臣
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-01-10
Anticipated expiration: 2029-03-25

Abstract

The utility model relates to a pipeline connects soon, including pipeline end's pipeline joint, still include coupling, breather pipe, compress tightly subassembly and sealing washer, coupling and pipeline articulate, the embedding of the preceding tip of breather pipe in the coupling, compress tightly subassembly suit on the breather pipe and with coupling threaded connection, rotatory preceding tip fastening that compresses tightly the subassembly with the breather pipe in the coupling the tail end installation quick change joint or the shutoff of breather pipe, the sealing washer sets up the lip that is used for sealed pipeline to connect between the preceding tip of breather pipe and pipeline joint. The utility model is not only simple in structure, easily operation has practiced thrift material and engineering time, has improved work efficiency, has also effectively avoided the residue to get into inside the pipeline simultaneously, has reduced the quality risk of pipeline jam.

Description

Pipeline quick connector

Technical Field

The utility model belongs to the technical field of rail vehicle makes, in particular to pipeline connects soon.

Background

In the production process of newly-built motor train units and various metro vehicle bogies, air-filling and pressure-maintaining tests need to be carried out on pipelines and components which are assembled well, such as brake pipelines, tread sweeper pipelines and the like. The former method needs to wind raw rubber belt on the external thread of the pipeline joint, then screw the internal thread of the pipe joint or the sealing pipe plug, and seal the joint by filling the gap with the raw rubber belt in the screwing process to make the joint airtight. After the pipe joint or the sealing pipe plug is screwed down after pressure maintaining is finished, the external thread of the pipeline joint needs to be cleaned up, so that residual raw rubber belts on the external thread of the pipeline joint are prevented from entering the pipeline to form blockage, and the driving safety is prevented from being influenced. The existing connecting method has complex working procedures and low working efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a simple structure, and easily operation can improve work efficiency, reduces the pipeline that the pipeline blocks up the risk and connects soon.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a pipeline quick-operation joint, includes pipeline end's pipeline joint, still includes coupling, breather pipe, compresses tightly subassembly and sealing washer, coupling and pipeline articulate, the preceding tip embedding of breather pipe in the coupling, compress tightly the subassembly suit on the breather pipe and with coupling threaded connection, rotatory subassembly that compresses tightly fastens the preceding tip of breather pipe in the coupling the tail end installation quick change joint or the shutoff of breather pipe, the sealing washer sets up the lip that is used for sealed pipeline joint between the preceding tip of breather pipe and pipeline joint.

Furthermore, the tail end of the vent pipe is provided with internal threads which are connected with the quick-change connector or the plug through threads.

Further, the pipeline joint has external screw threads, the front end portion and the rear end portion of the pipe joint both have internal screw threads, the pipeline joint is in threaded connection with the front end portion of the pipe joint, and the compression assembly is in threaded connection with the rear end portion of the pipe joint.

Furthermore, the compressing assembly comprises a compressing nut and a spinning sleeve, the compressing nut is provided with an external thread and is connected with an internal thread at the rear end part of the pipe joint, the spinning sleeve is sleeved outside the vent pipe and is fixedly connected with the compressing nut, and the spinning sleeve rotates along the vent pipe to push the compressing nut to precess along the internal thread at the tail end part of the pipe joint.

Furthermore, the compression nut consists of a threaded connection part at the front end and a smooth connection part at the rear end, the threaded connection part is provided with an external thread and is connected with an internal thread of the pipe joint, and the spinning sleeve is fixedly connected with the smooth connection part of the compression nut.

Furthermore, an annular groove is formed in the outer peripheral surface of the threaded connection portion of the compression nut, a stop screw is arranged on the pipe joint, and the end portion of the stop screw protrudes inwards into the groove and is used for limiting the screwing distance of the compression nut.

Furthermore, the inner hole of the spinning sleeve is step-shaped, the front section of the spinning sleeve is sleeved on the outer side of the pipe joint, the middle section of the spinning sleeve is sleeved on the outer side of the compression nut and fixedly connected with the compression nut, and the tail section of the spinning sleeve is sleeved on the outer side of the vent pipe.

Furthermore, the spinning sleeve is fixedly connected with the compression nut through a set screw.

Furthermore, the front end of breather pipe is T shape, has outside convex flange compress tightly and be provided with the copper gasket between the flange of subassembly and breather pipe front end, the copper gasket suit is in the outside of breather pipe.

Further, a boss protruding forwards is arranged at the front end of the vent pipe, and the sealing ring is installed around the outer side of the boss.

To sum up, the utility model provides a pair of pipeline connects soon, the specially adapted pipeline tip has the condition that external screw thread pipe joint, when carrying out the pressurize experiment, only need to twist this joint into the pipe joint, connect the tuber pipe and fill the wind and can carry out the pressurize experiment or directly be used for sealing, simple structure not only, easily operation has saved processes such as winding adhesive tape and clearance adhesive tape among the traditional approach, material and engineering time have been practiced thrift, work efficiency is improved, inside also effectively having avoided the residual to get into the pipeline simultaneously, the quality risk of pipeline jam has been reduced. The connector can be connected with a quick-change connector or plugged according to different process requirements, meets different process requirements, has strong universality, and can be expanded to all vehicle types needing air inflation and pressure maintaining.

Drawings

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

As shown in fig. 1, the pipe joint 2, the vent pipe 3, the seal ring 4, the boss 5, the compression nut 6, the threaded connection portion 6a, the smooth connection portion 6b, the spinning sleeve 7, the set screw 8, the groove 9, the stop screw 10, the copper gasket 11, and the flange 12.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1, the utility model provides a quick coupling for pipeline, including pipeline joint 1 of pipeline tip and coupling 2, breather pipe 3, the subassembly and the sealing washer 4 that compress tightly of being connected with pipeline joint 1.

In this embodiment, the pipe joint 1 has an external thread, the front end portion and the rear end portion of the pipe joint 2 each have an internal thread, and the pipe joint 1 and the front end portion of the pipe joint 2 are screwed together in use.

The breather pipe 3 is used for communicating the pipeline with the outside, the front end of the breather pipe 3 is T-shaped and is provided with a flange 12 protruding outwards, and the front end of the breather pipe 3 is embedded into the pipe joint 2. The compressing assembly is sleeved on the breather pipe 3 and connected with the internal thread at the rear end part of the pipe joint 2, the front end part of the breather pipe 3 is fastened in the pipe joint 2 by rotating the compressing assembly, and the fastening and sealing are realized by using a spiral compressing mode, so that the compressing force is large, and the operation is simple and fast.

The tail end of the vent pipe 3 is provided with internal threads and is in threaded connection with a quick-change connector or a plug (not shown in the figure), so that the operation is simple, convenient and reliable. When needing to connect another pipeline of aerifing or filling water, can connect quick change coupler at the tail end of breather pipe 3, with pipeline and gas tube or fill water piping intercommunication, when need not connecting other pipelines but need the shutoff pipeline, then directly connect the shutoff at the tail end of breather pipe 3, can realize the sealed of pipeline.

The sealing ring 4 is arranged between the front end part of the breather pipe 3 and the pipeline joint 1 and used for sealing the lip of the pipeline joint 1 and ensuring the reliability of an air filling pressure maintaining test, a water filling test and plugging. The front end part of the breather pipe 3 is also provided with a boss 5 protruding forwards, the sealing ring 4 is sleeved outside the boss 5, the sealing ring 4 is ensured to be effectively contacted with the lip of the pipeline joint 1 to realize sealing in the compressing process, and meanwhile, the sealing ring 4 is convenient to replace after being damaged.

In this embodiment, the compression assembly includes a compression nut 6 and a spinning sleeve 7, and the compression nut 6 is composed of a threaded connection portion 6a at the front end and a smooth connection portion 6b at the rear end. The threaded portion 6a has an external thread and is connected to an internal thread at the rear end of the pipe joint 2.

The inner hole of the spinning sleeve 7 is step-shaped, and the front section is sleeved on the outer side of the pipe joint 2 to play a better guiding role. The middle section suit of spinning cover 7 is in the outside of gland nut 6's smooth connecting portion 6b to through holding screw 8 and smooth connecting portion 6b fixed connection, guarantee after the connection that threaded connection portion 6a closely supports together with the step department in spinning cover 7 middle section, realize that spinning cover 7 and gland nut 6 transmit thrust effectively in the rotation. The tail section of the spinning sleeve 7 is sleeved on the outer side of the air pipe 3. Can drive gland nut 6 rotatory through rotatory spinning cover 7, promote gland nut 6 and screw in along coupling 2, compress tightly breather pipe 3 and fix inside coupling 2, guarantee simultaneously that sealing washer 4 is effectively sealed.

A copper gasket 11 is arranged between the front end of the compression nut 6 and a flange 12 at the front end of the vent pipe 3, and the copper gasket 11 is sleeved outside the vent pipe 3. In the process of screwing the spinning sleeve 7, the pipe joint 2 and the copper gasket 11 cannot rotate along with the spinning sleeve, and the compression nut 6 and the copper gasket 11 rotate and extrude to generate friction force, so that the friction force is reduced to a great extent.

The outer peripheral surface of the threaded connection part 6a of the compression nut 6 is provided with an annular groove 9, a stop screw 10 is arranged on the pipe joint 2, the end part of the stop screw 10 protrudes inwards into the groove 9, the width of the groove 9 is matched with the screwing distance of the compression nut 6, and in the screwing process of the compression nut 6, one side edge of the groove 9 is clamped at the stop screw 10 to stop screwing, so that the screwing distance of the compression nut 6 is limited.

During the air inflation test, the installation process is as follows:

1. firstly, aligning the pipe joint 2 with the external thread of the pipeline joint 1, screwing the pipe joint 2, and screwing the external thread of the pipeline joint 1 into the pipe joint 2.

2. Under the action of the set screw 8, the screwing sleeve 7 is screwed to drive the compression nut 6 to rotate on the body of the vent pipe 3, and the copper gasket 11, the vent pipe 3 and the sealing ring 4 are pushed forwards.

3. Under the stopping effect of the stopping screw 10, the vent pipe 3 is pressed and fixed in the pipe joint 2, and meanwhile, the sealing ring 4 is pressed on the lip end face of the pipeline joint 1 to realize sealing.

4. When the test is needed, the ventilation quick-change connector is screwed on the tail end part of the ventilation pipe 3, and high-pressure air is connected, so that the air charging test can be carried out on the pipeline.

When the test is not needed, the pipeline joint 1 can be plugged by screwing the seal plug on the tail end part of the vent pipe 3.

This quick-connect joint specially adapted pipeline tip has the condition of external screw thread pipeline joint 1, when carrying out the pressurize experiment, only need to twist this coupling 2 in the pipeline joint 1, connect the tuber pipe and fill the wind and can carry out the pressurize experiment or directly be used for sealing, overall structure is simple small and exquisite not only, easy operation, the process such as winding adhesive tape and clearance adhesive tape in having saved traditional method, material and engineering time have been practiced thrift, work efficiency is improved, inside also effectively having avoided the residue to get into the pipeline simultaneously, the quality risk of pipeline jam has been reduced. The connector can be connected with a quick-change connector or plugged according to different process requirements, meets different process requirements, has strong universality, and can be expanded to all vehicle types needing air inflation and pressure maintaining.

Similar solutions can be derived from the solution given in the figures, as described above. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a pipeline connects soon, includes pipeline joint of pipeline tip which characterized in that: still include coupling, breather pipe, compress tightly subassembly and sealing washer, coupling and pipeline articulate, the front end embedding of breather pipe in the coupling, compress tightly the subassembly suit on the breather pipe and with coupling threaded connection, rotatory compress tightly the preceding tip fastening of subassembly with the breather pipe in the coupling the tail end installation quick change coupler or the shutoff of breather pipe, the sealing washer sets up the lip that is used for sealed pipeline to connect between the preceding tip of breather pipe and pipeline joint.

2. The quick connect coupling for pipes of claim 1, wherein: the tail end of the vent pipe is provided with internal threads which are connected with the quick-change connector or the plug through threads.

3. The quick connect coupling for pipes of claim 1, wherein: the pipeline connects and has the external screw thread, the preceding tip of coupling and back tip all have the internal thread, threaded connection between pipeline connects and the coupling preceding tip, compress tightly subassembly and coupling back tip threaded connection.

4. The quick connect coupling for pipes of claim 3, wherein: the compression assembly comprises a compression nut and a spinning sleeve, the compression nut is provided with an external thread and is connected with an internal thread at the rear end part of the pipe joint, the spinning sleeve is sleeved outside the vent pipe and is fixedly connected with the compression nut, and the spinning sleeve rotates along the vent pipe to push the compression nut to screw in along the internal thread at the tail end part of the pipe joint.

5. The quick connect coupling for pipes of claim 4, wherein: the compression nut is composed of a threaded connection portion at the front end and a smooth connection portion at the rear end, the threaded connection portion is provided with an external thread and is connected with an internal thread of a pipe joint, and the spinning sleeve is fixedly connected with the smooth connection portion of the compression nut.

6. The quick connect coupling for pipes of claim 5, wherein: the outer peripheral surface of the threaded connection part of the compression nut is provided with an annular groove, the pipe joint is provided with a stop screw, and the end part of the stop screw protrudes inwards in the groove and is used for limiting the screwing distance of the compression nut.

7. The quick connect coupling for pipes of claim 4, wherein: the inner hole of the spinning sleeve is step-shaped, the front section of the spinning sleeve is sleeved on the outer side of the pipe joint, the middle section of the spinning sleeve is sleeved on the outer side of the compression nut and fixedly connected with the compression nut, and the tail section of the spinning sleeve is sleeved on the outer side of the breather pipe.

8. The quick connect coupling for pipes of claim 4, wherein: and the spinning sleeve is fixedly connected with the compression nut through a set screw.

9. The quick connect coupling for pipes of claim 1, wherein: the front end of the breather pipe is T-shaped and is provided with a flange protruding outwards, a copper gasket is arranged between the compression assembly and the flange at the front end of the breather pipe, and the copper gasket is sleeved on the outer side of the breather pipe.

10. The quick connect coupling for pipes of claim 9, wherein: the front end part of the breather pipe is provided with a boss protruding forwards, and the sealing ring is arranged around the outer side of the boss.