CN108662314B

CN108662314B - Pipe joint

Info

Publication number: CN108662314B
Application number: CN201810523690.7A
Authority: CN
Inventors: 童津金
Original assignee: NINGBO HENGYUAN PRECISION VALVES TECHNOLOGY Co Ltd
Current assignee: NINGBO HENGYUAN PRECISION VALVES TECHNOLOGY Co Ltd
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2019-12-06
Anticipated expiration: 2038-05-28
Also published as: CN108662314A

Abstract

The invention relates to a pipe joint, which comprises a connecting pipe for inserting and connecting pipelines in an interference fit manner and a matching pipe which integrally extends outwards from two ends of the connecting pipe and has an inner diameter larger than the outer diameter of the pipelines, wherein the matching pipe and the connecting pipe are both made of elastic materials, an inflatable air bag layer after air transmission is arranged on annular folds of the inner wall of the matching pipe, an air storage mechanism made of elastic materials is arranged on the outer wall of the matching pipe, an air transmission pipe is arranged between the air storage mechanism and the air bag layer, a one-way air transmission mechanism for transmitting air to the air bag layer from the air storage mechanism in a one-way manner is arranged on the air transmission pipe, an exhaust pipe is arranged between the air bag layer and the outer wall of the connecting pipe, a matching groove is arranged on the connecting pipe, an air supply pipe is arranged between the inner annular wall of the matching groove and the air storage mechanism, one end of the exhaust pipe, the pipe joint is simple and quick to connect with a pipeline, and has good sealing performance.

Description

Pipe joint

Technical Field

The invention relates to the field of pipeline joints, in particular to a pipe joint.

Background

The plastic pipeline is generally flat in appearance, two pipeline connections are generally connected through a pipe joint, in order to keep good sealing effect, most of the existing pipelines are connected through a ferrule type pipe joint, for example, the ferrule type pipe joint disclosed in the Chinese patent with the application number of 201620372842.4 comprises a connector, a nut, an elastic snap ring and a sealing ring which are coaxially arranged, one end of the connector is in threaded fit with the nut, the elastic snap ring and the sealing ring are arranged between the connector and the nut, the elastic snap ring is in a conical lantern ring structure, the tip of the elastic snap ring faces towards the end of the nut, one side of a trepanning of the nut, which faces towards the elastic snap ring, is provided with a chamfer, and the chamfer is; and a sealing groove is arranged at one end of the connector matched with the nut, and the sealing ring is arranged in the sealing groove.

The ferrule type pipe joint has the characteristic of good sealing effect, but the ferrule type pipe joint is of a split structure, the components are dispersed, the components are required to be assembled and matched with each other during installation, and time is consumed when the ferrule type pipe joint is connected with a pipeline.

Disclosure of Invention

The invention aims to provide a pipe joint which can be quickly connected with the pipe joint while ensuring the sealing performance.

In order to achieve the purpose, the method is realized by the following technical means: a pipe joint comprises a connecting pipe for the interference fit and insertion of a pipeline and a matching pipe which integrally extends outwards from the two ends of the connecting pipe and has an inner diameter larger than the outer diameter of the pipeline, the matching pipe and the connecting pipe are both made of elastic materials, the inner wall of the matching pipe is annularly folded and provided with an air bag layer which can expand after air transmission, the outer wall of the matching pipe is provided with an air storage mechanism made of elastic materials, an air transmission pipe is arranged between the air storage mechanism and the air bag layer, the air transmission pipe is provided with a one-way air transmission mechanism which transmits air from the air storage mechanism to the air bag layer in one way, an exhaust pipe is arranged between the air bag layer and the outer wall of the connecting pipe, a matching groove is arranged on the connecting pipe, and a gas supply pipe is arranged between the inner ring wall of the matching groove and the gas storage mechanism, one end of the exhaust pipe, which is far away from the air bag layer, is communicated with the matching groove, and a closing mechanism capable of opening or closing the exhaust pipe and the gas supply pipe is arranged on the matching groove.

According to the technical scheme, the connecting pipe and the matching pipe of the pipe joint are made of elastic materials, so that two pipelines to be connected are inserted into the connecting pipe in an interference mode from the matching pipe until the two pipelines are mutually abutted, at the moment, the two pipelines are preliminarily connected, the matching groove is sealed by the sealing mechanism, namely, the exhaust pipe and the air supply pipe are simultaneously sealed, the air storage mechanism is extruded, after the air storage mechanism is pressed, the internal pressure is enhanced, the one-way air transmission mechanism is triggered to transmit air into the air transmission pipe, the air bag layer is expanded to abut against the pipelines, the pipelines are sealed from the matching pipe, the air bag layer has strong friction, and displacement of the pipelines is further limited when the air bag layer is sealed; when the air bag is detached, the sealing mechanism is only required to be detached, air in the air bag layer is exhausted from the exhaust pipe to the matching groove and is finally exhausted out of the pipe joint through the matching groove, the air storage mechanism can automatically suck air from the air supply pipe to reset again due to the negative pressure existing after pinching, the pipe joint is simple and quick to connect with a pipeline, and the sealing performance is good.

The method is further optimized as follows: the gas storage mechanism comprises an elastic layer which is annularly arranged on the outer wall of the matching pipe and protrudes outwards, and the elastic layer and the outer wall of the matching pipe form a sealed gas storage cavity.

Through above-mentioned technical scheme, the elastic layer is cyclic annular to be provided with, during the use, only needs both hands fist to hold the elastic layer and can extrude whole elastic layer simultaneously, and the internal pressure of elastic layer increases rapidly and dashes out one-way air delivery mechanism and to the air bag in situ air delivery.

The method is further optimized as follows: the connecting pipe, the matching pipe, the air bag layer and the elastic layer are integrally arranged.

Through above-mentioned technical scheme, connecting pipe, cooperation pipe, gasbag layer and elastic layer are made and integrative the setting by elastic material, can ensure the gas tightness of junction and the fastness of connection.

The method is further optimized as follows: one-way gas transmission mechanism is including setting up in the recess that the intraductal shape of cooperation is the frustum shape, the most advanced of recess towards the gas storage chamber and with the gas storage chamber intercommunication, the gas-supply pipe one end of keeping away from the gas bag layer and the one end intercommunication of keeping away from the gas storage chamber of recess lateral wall, still including setting up the elasticity end cap that is the frustum form in the recess and set up between recess bottom and elasticity end cap and order about the elasticity end cap to the direction motion of keeping away from the recess bottom and seal the reset spring of gas-supply pipe.

Through above-mentioned technical scheme, when the increase of pressing back internal pressure in the gas storage chamber, the atmospheric pressure pushes up elasticity end cap and contracts to the recess bottom, because recess bottom area is greater than elasticity end cap, so make the air enter into the gas-supply pipe along the space department of elasticity end cap and recess inner wall and make the gasbag layer inflation, after loosening the hand, elasticity end cap loses and pushes up its atmospheric pressure, reverse motion stops up the one end that the recess is close to the gas storage chamber under the effect of the negative pressure in reset spring and gas storage chamber, the air on gasbag layer is stopped up by elasticity end cap and can't flow back to the gas storage chamber simultaneously.

The method is further optimized as follows: the matching groove is a circular groove, and the sealing mechanism is an elastic plug in interference fit with the groove.

Through the technical scheme, after the elastic plug is extruded into the circular groove in an interference mode, the exhaust pipe and the air supply pipe are simultaneously sealed by the elastic plug, the air in the air storage cavity is prevented from flowing away from the air supply pipe, the air in the air bag layer is prevented from flowing away from the exhaust pipe, the elastic plug needs to be pressed when the elastic layer is extruded, the elastic plug cannot be broken by air pressure, and after the elastic layer is loosened, the elastic plug can be further sucked and fixed into the circular groove by negative pressure in the air storage cavity.

The method is further optimized as follows: the cooperation groove is a thread groove, the closing mechanism be with thread groove complex closure, the closure include with thread groove complex double-screw bolt and be convenient for manual rotation's spiral piece, the cover is equipped with the sealing washer on the double-screw bolt, double-screw bolt and thread groove tight fit after the sealing washer is established to the closure cover.

Through above-mentioned technical scheme, the screw post that adopts the closure member seals for trachea and blast pipe with the thread groove cooperation, and the operation of the sealing member of being convenient for of piece revolves is carried out further sealedly by the sealing washer, sets up behind the sealing member, need not to press the sealing member when extrusion elastic layer and just can avoid the air on gasbag layer to discharge from the blast pipe simultaneously, avoids the air in the gas storage chamber to discharge from the trachea.

The method is further optimized as follows: the one end and the thread groove bottom intercommunication of gasbag layer are kept away from to the blast pipe, the one end that the spiral piece was kept away from to the double-screw bolt is fixed with and blocks up the elastic sealing pad of blast pipe after double-screw bolt and thread groove tight fit.

Through above-mentioned technical scheme, the setting of elastic sealing pad further increases the leakproofness to the blast pipe, avoids the intraformational air of gasbag to discharge.

The method is further optimized as follows: the elastic material is made of silica gel or rubber.

Through the technical scheme, the silica gel or the rubber has stable performance, good elasticity, buffering and damping effects and corrosion resistance.

Compared with the prior art, the invention has the advantages that: wholly make by elastic material, with two pipelines of treating to connect behind the cooperation of pegging graft with the connecting pipe interference, adopt elasticity shutoff or sealing member to seal the cooperation groove earlier, then pinch the elastic layer, elasticity intraformational atmospheric pressure is broken away and is aerifyd to the gasbag layer and seal between pipeline and the cooperation pipe after the elasticity end cap, then loose one's hand can, the elasticity end cap is automatic under reset spring effect and is sealed the recess and be close to the one end in gas storage chamber, the gasbag layer not only plays sealed effect this moment, further consolidate the fastness that pipeline and coupling are connected simultaneously, only need pull down elasticity shutoff or sealing member during the dismantlement, just enable gasbag layer exhaust, the elastic layer is aerifyd, pull out the pipeline from the connecting pipe this moment hard, this coupling is a whole setting, it is simple with being connected of pipeline, it is quick, the leakproofness is good.

Drawings

FIG. 1 is a front view of a pipe joint according to the present embodiment after being connected to a pipe;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view of A in FIG. 2;

FIG. 4 is an enlarged view of B in FIG. 3;

fig. 5 is an enlarged view of C in fig. 3.

In the figure, 1, connecting pipe; 2. a mating tube; 3. an elastic layer; 4. a gas storage cavity; 5. a seal member; 501. a stud; 502. rotating the block; 6. a seal ring; 7. an air bag layer; 8. a gas delivery pipe; 9. a groove; 10. an elastic plug; 11. a return spring; 12. a gas supply pipe; 13. an exhaust pipe; 14, an elastic sealing gasket; 15. a thread groove.

Detailed Description

The invention will be further described by means of specific embodiments, which are given by way of illustration only and are not intended to limit the scope of the invention.

Examples

A pipe joint is disclosed, refer to fig. 1-5, and is suitable for connection between plastic pipes, rubber pipes or silicone tubes, and comprises a connecting pipe 1 with an inner diameter smaller than the outer diameter of the pipe for interference fit insertion of the pipe and a matching pipe 2 extending outwards from two ends of the connecting pipe 1 in an integrated manner and having an inner diameter larger than the outer diameter of the pipe, wherein the matching pipe 2 and the connecting pipe 1 are both made of elastic materials, silica gel or rubber can be adopted, preferably silica gel is adopted, an annular air bag layer 7 capable of expanding after air transmission is arranged on an annular fold on the inner wall of the matching pipe 2, the air bag layer 7 is made of silica gel, an air storage mechanism made of elastic materials is arranged on the outer wall of the matching pipe 2, and is preferably made of silica gel, and is shown in fig. 2 and comprises an annular elastic layer 3 arranged on the outer wall of the matching pipe 2 and protruding outwards.

Be provided with gas-supply pipe 8 between gas storage mechanism and the gasbag layer 7, refer to fig. 3-4, be provided with the one-way gas transmission mechanism from gas storage chamber 4 to the one-way gas transmission of gasbag layer 7 on the gas-supply pipe 8, this one-way gas transmission mechanism, including setting up the recess 9 that the shape is frustum shape in cooperation pipe 2, the most advanced of recess 9 is towards gas storage chamber 4 and with gas storage chamber 4 intercommunication, the one end that gas-supply pipe 8 kept away from gasbag layer 7 and the one end intercommunication that the gas storage chamber 4 was kept away from to the recess 9 lateral wall, still including set up the elasticity end cap 10 that is frustum shape in recess 9 and set up between recess 9 bottom and elasticity end cap 10 and order about elasticity end cap 10 to keep away from the direction motion of recess 9 bottom and seal gas-supply pipe 8.

a matching groove is arranged on the connecting pipe 1, a gas supply pipe 12 is arranged between the inner annular wall of the matching groove and the gas storage mechanism, an exhaust pipe 13 is arranged between the air bag layer 7 and the outer wall of the connecting pipe 1, one end of the exhaust pipe 13 far away from the air bag layer 7 is communicated with the matching groove, a sealing mechanism capable of opening or closing the exhaust pipe 13 and the gas supply pipe 12 is arranged on the matching groove, the matching groove is an annular groove or a thread groove 15, the matching groove in the embodiment is the thread groove 15, referring to the attached drawing 5, when the matching groove is the thread groove 15, the sealing mechanism is a sealing member 5 tightly matched with the thread groove 15, the sealing member 5 comprises a stud 501 matched with the thread groove 15 and a rotary block 502 convenient for manual rotation, a sealing ring 6 is sleeved on the stud 501, the stud 501 of the sealing member is tightly matched with the thread groove 15 after being sleeved with the sealing ring 6, in order to further increase the sealing performance of the exhaust pipe 13, one end of the exhaust, an elastic seal 14 for blocking the exhaust pipe 13 after the stud 501 is tightly matched with the thread groove 15 is fixed at one end of the stud 501, which is far away from the rotary block 502; furthermore, when the matching groove is an annular groove, the sealing mechanism is an elastic plug which is in interference fit with the annular groove, and the elastic plug is preferably made of silica gel.

in addition, the one-way gas transmission mechanism of this application still can replace with one-way gas accuse valve.

The connecting pipe 1, the matching pipe 2, the air bag layer 7 and the elastic layer 3 are made of silica gel and are arranged as a whole, when in use, two pipelines can be inserted into the connecting pipe 1 from the matching pipes 2 at two ends in an interference manner until the pipelines are mutually supported, then a sealing element 5 sleeved with a sealing ring 6 is tightly matched with a thread groove 15 and simultaneously seals the air supply pipe 12 and the exhaust pipe 13, then two hands respectively hold the two elastic layers 3 to extrude inwards, so that the volume in the air storage cavity 4 is reduced, the internal pressure is increased, the air pressure impacts the elastic plug 10 to move towards the bottom of the groove 9, so that the air enters the air supply pipe 8 through the gap between the elastic plug 10 and the groove 9 to supply air to the air bag layer 7, the air bag layer 7 is supported between the matching pipe 2 and the outer wall of the pipeline after expansion to seal, then the two hands are loosened, the elastic plug 10 reversely moves under the double actions of the negative pressure of the air storage cavity 4 and, so that the air in the air bag layer 7 cannot flow reversely. Whole coupling is overall structure, only need three steps just when being connected with the pipeline, it is quick, simple and convenient, and can guarantee good sealed effect, be applicable to the plastic tubing, the rubber tube, the interconnect of silicone tube, can connect the pipeline of two the same pipe diameters, also can connect the pipeline of two different pipe diameters, only need satisfy the external diameter of pipeline be greater than the internal diameter of connecting pipe 1 and be less than the internal diameter of cooperation pipe 2 can, because gasbag layer 7 is made by silica gel, very strong frictional force has, can further fasten the pipeline on the coupling.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A pipe joint is characterized by comprising a connecting pipe for the interference fit and insertion of a pipeline and a matching pipe which integrally extends outwards from two ends of the connecting pipe and has an inner diameter larger than the outer diameter of the pipeline, the matching pipe and the connecting pipe are both made of elastic materials, the inner wall of the matching pipe is annularly folded and provided with an air bag layer which can expand after air transmission, the outer wall of the matching pipe is provided with an air storage mechanism made of elastic materials, an air transmission pipe is arranged between the air storage mechanism and the air bag layer, the air transmission pipe is provided with a one-way air transmission mechanism which transmits air from the air storage mechanism to the air bag layer in one way, an exhaust pipe is arranged between the air bag layer and the outer wall of the connecting pipe, a matching groove is arranged on the connecting pipe, and a gas supply pipe is arranged between the inner ring wall of the matching groove and the gas storage mechanism, one end of the exhaust pipe, which is far away from the air bag layer, is communicated with the matching groove, and a closing mechanism capable of opening or closing the exhaust pipe and the gas supply pipe is arranged on the matching groove.

2. The pipe joint according to claim 1, wherein the gas storage mechanism comprises an elastic layer annularly disposed on the outer wall of the mating pipe and protruding outward, and the elastic layer and the outer wall of the mating pipe form a sealed gas storage cavity.

3. The joint of claim 2, wherein the connecting tube, the mating tube, the balloon layer and the elastic layer are integrally formed.

4. The pipe joint according to claim 3, wherein the one-way gas transmission mechanism comprises a groove which is arranged in the matching pipe and has a frustum shape, the tip end of the groove faces towards the gas storage cavity and is communicated with the gas storage cavity, one end of the gas transmission pipe, which is far away from the gas bag layer, is communicated with one end of the groove side wall, which is far away from the gas storage cavity, and the one-way gas transmission mechanism further comprises an elastic plug which is arranged in the groove and has a frustum shape and a reset spring which is arranged between the bottom of the groove and the elastic plug and drives the elastic plug to move towards the direction far away from the bottom of the groove.

5. A pipe joint according to claim 3, wherein the engagement groove is a circular groove and the closure means is a resilient plug which is an interference fit with the groove.

6. The pipe joint according to claim 3, wherein the mating groove is a thread groove, the closing mechanism is a closing member that mates with the thread groove, the closing member includes a stud that mates with the thread groove and a knob that facilitates manual rotation, a sealing ring is sleeved on the stud, and the stud and the thread groove are tightly fitted after the closing member is sleeved on the sealing ring.

7. The pipe joint according to claim 6, wherein the end of the exhaust pipe away from the air bag layer is communicated with the bottom of the thread groove, and an elastic sealing gasket for blocking the exhaust pipe after the stud is tightly matched with the thread groove is fixed at the end of the stud away from the rotary block.

8. A pipe joint according to any one of claims 2-7, wherein the resilient material is made of silicone or rubber.