CN210890521U

CN210890521U - Outer connecting assembly of composite corrugated pipe

Info

Publication number: CN210890521U
Application number: CN201920987218.9U
Authority: CN
Inventors: 陶正年
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-22
Filing date: 2019-06-22
Publication date: 2020-06-30
Anticipated expiration: 2029-06-22

Abstract

The utility model relates to an outer coupling assembling of compound bellows, it includes bellows, envelope overcoat and installs the outer coupling assembling on compound bellows end, this outer coupling assembling include an external pipe fitting and one can pass through the swivel nut that threaded connection is fixed and install O type circle and snap ring wherein with it, the screw thread pipe of external pipe fitting then passes through threaded connection with the swivel nut, with the snap ring of two semicircle structures and O type circle centre gripping in the middle of and locking fixed, accomplish sealing connection. In addition, on the basis of the above, an annular gasket can be added to increase the sealing performance. In a word, the invention effectively solves the problems of sealing and strength of the external connection structure of the composite corrugated pipe, and is worth popularizing and applying in the project of conveying water and fluid.

Description

Outer connecting assembly of composite corrugated pipe

Technical Field

An external connecting component relating to a composite corrugated pipe is mainly applied to a conveying pipeline of water and fluid.

Background

At present, stainless steel corrugated pipes on the market are mostly bare pipes without enveloping jackets, one of the stainless steel corrugated pipes is simple in connection, a movable nut and a gasket are respectively added at two ends of each pipe, the size of each nut is slightly enlarged by extruding the end of the corrugated pipe after the nuts are sleeved into the pipes in advance, the nuts are blocked and cannot fall off, although sealing can be achieved, the sealing performance is poor and low in pressure resistance, and particularly, the structure is too low in mechanical strength, easy to fall off and not durable. The composite corrugated pipe is a stainless steel corrugated pipe with an outer sleeve, the outer sleeve can be hard, such as hard plastic, soft, such as soft plastic, or a foaming material, or a heat-insulating sponge, the performance and the application of the composite corrugated pipe are far greater than those of a single corrugated pipe, and the material of the corrugated pipe is not limited to stainless steel completely. The simple connection structure of the composite corrugated pipe is difficult to achieve the requirements of strength, pressure resistance and sealing.

SUMMERY OF THE UTILITY MODEL

The intensity of the simple and easy connected mode to current corrugated stainless steel pipe in the market is low, and is not durable, the poor defect of leakproofness, the utility model discloses an outer coupling assembling of composite bellows can solve above-mentioned shortcoming, makes it between the pipe, and the connection between pipe and the parts is more firm, and sealing performance is better, and is withstand voltage higher, is particularly suitable for using the all kinds of water and fluidic engineering needs of carrying of composite bellows.

The technical scheme of the utility model is that: the composite corrugated pipe comprises a corrugated pipe 1 and an enveloping outer sleeve 2, an external connecting component arranged on the end head of the composite corrugated pipe comprises an external pipe 3, a thread sleeve 4 which can be fixedly connected with the external pipe through threads, an O-shaped ring 7 and a snap ring 5, wherein the thread sleeve 4 is sleeved on the composite corrugated pipe in advance, one end of the external pipe 3 is a part which can be externally connected with other pipelines, the other end of the external pipe is a threaded circular pipe 31 connected with the thread sleeve 4, the external enveloping outer sleeve 2 part with proper length is removed from the end head of the composite corrugated pipe to be connected in advance, the O-shaped ring 7 is arranged in one or more annular grooves (wave troughs) on the periphery of the exposed end head of the corrugated pipe 1, the inner wall of the threaded circular pipe 31 of the external pipe 3 is sleeved on the corrugated pipe 1 and the O-shaped ring 7, and the axial sealing of the inner wall of the threaded circular pipe 31 and the corrugated, the inner side of an O-shaped ring 7 on the end of the corrugated pipe 1 is provided with a group of clamping rings 5 in two adjacent annular grooves of the corrugated pipe 1, each clamping ring 5 is a complete ring formed by two semicircles, the shape of the inner circle of each clamping ring 5 can be embedded with the annular groove of the corrugated pipe 1 to achieve axial positioning, the diameter of the outer circumference of each clamping ring 5 is larger than the outer diameter of an envelope sleeve 2 of the composite corrugated pipe by a certain dimension, the clamping rings are brought into the inner wall of an external pipe fitting 3 to achieve radial positioning, a threaded circular pipe 31 of the external pipe fitting 3 including the end of the corrugated pipe 1, the O-shaped ring 7 and the clamping rings 5 is connected with a threaded sleeve 4 which is sleeved into the composite corrugated pipe in advance through threads, the clamping rings 5 of two semicircular structures are.

In the scheme, the external pipe fitting 3 and the corrugated pipe 1 are sealed through the O-shaped ring 7, and the external pipe fitting 3 and the corrugated pipe 1 are positioned through the clamped clamping ring 5, so that the connection and sealing effects with other external pipe fittings can be well completed.

The second scheme of the utility model is: on the basis of the first scheme, the sealing between the inner cavity of the threaded round pipe and the envelope sleeve of the corrugated pipe is realized on the inner side of the clamped clamping ring, and the sealing performance and the strength of the external connecting component and the corrugated pipe are improved.

The third scheme of the utility model is: in the second scheme, a hard opening clamping ring is additionally arranged in the inner side of the annular gasket and in the inner cavity of the threaded circular tube and the threaded sleeve, and the clamping ring has the function of not only pressing the annular gasket to increase the overall sealing performance, but also increasing the adhesive force between the external connecting component and the corrugated tube, and is favorable for connecting strength and sealing performance.

The fourth scheme of the utility model is: on the basis of the first scheme, an annular gasket is arranged between the exposed corrugated pipe and the inner cavity of the threaded circular pipe in the radial direction and between the inner side of the O-shaped ring and the snap ring in the axial direction, the width (axial direction) of the annular gasket can span at least one wave crest (convex circular arc) of the corrugated pipe and cannot be trapped in a wave trough (annular groove), and when the threaded circular pipe and the threaded sleeve are locked, the wave crest part of the corrugated pipe and the inner cavity of the threaded circular pipe can be well sealed.

The fifth proposal of the utility model is that: in the fourth example, the threaded sleeve is sleeved on the enveloping outer sleeve of the corrugated pipe, in this example, a part of the enveloping outer sleeve of the corrugated pipe is further removed inwards, so that the threaded sleeve is directly sleeved on the exposed corrugated pipe and then is connected and locked with the threaded circular pipe through threads, and the clamping ring and the annular gasket are clamped between the clamping ring and the annular gasket and are sealed.

The sixth proposal of the utility model is that: on the basis of the first embodiment, a part of the enveloping outer sleeve 2 on the corrugated pipe 1 is removed inwards, so that the thread insert 4 is directly sleeved on the exposed corrugated pipe 1, then the O-shaped ring in front of the snap ring 5 is removed and replaced by the annular gasket 8, and then the thread insert 4 and the threaded circular pipe 31 are connected and locked through threads, so that the snap ring 5 and the annular gasket 8 are clamped and sealed in the middle.

On the existing market, the stainless steel corrugated pipe of bare pipe's connection is sealed and intensity does not have fine solution, and what ever condition takes the stainless steel corrugated pipe of envelope overcoat, the utility model discloses because of the quality and the better sealing performance of its high strength, the usage is more extensive, will be worth using widely more.

Drawings

Fig. 1 is a perspective view of the present invention

Fig. 2 is a plan view of a first embodiment of the present invention

Fig. 3 is a plan view of a second embodiment of the present invention

Fig. 4 is a plan view of a third embodiment of the present invention

Fig. 5 is a plan view of a fourth embodiment of the present invention

Fig. 6 is a plan sectional view of a fifth embodiment of the present invention

Fig. 7 is a plan sectional view of a sixth embodiment of the present invention

1. Corrugated pipe 2, enveloping jacket 3, external connecting piece 31, threaded circular pipe 4, thread sleeve 5, snap ring 6, snap ring clamping ring 7, O-shaped ring 8, annular gasket 9, opening hard snap ring

Detailed Description

The first embodiment of the present invention

Fig. 1 is a perspective view of a composite corrugated pipe, showing the composition of the composite corrugated pipe, wherein the inside is a corrugated pipe 1, and the outside is an enveloping outer sleeve 2, and the outer sleeve is tightly and completely wrapped on the periphery of the corrugated pipe.

Fig. 2 is a plan sectional view of the present embodiment, showing the structure of the present embodiment.

The composite corrugated pipe comprises a corrugated pipe 1 and an enveloping outer sleeve 2, an external connecting component arranged on the end head of the composite corrugated pipe comprises an external pipe 3, a thread sleeve 4 which can be fixedly connected with the external pipe through threads, an O-shaped ring 7 and a snap ring 5, wherein the thread sleeve 4 is sleeved on the composite corrugated pipe in advance, one end of the external pipe 3 is a part which can be externally connected with other pipelines, the other end of the external pipe is a threaded circular pipe 31 connected with the thread sleeve 4, the external enveloping outer sleeve 2 part with proper length is removed from the end head of the composite corrugated pipe to be connected in advance, the O-shaped ring 7 is arranged in one or more annular grooves (wave troughs) on the periphery of the exposed end head of the corrugated pipe 1, the inner wall of the threaded circular pipe 31 of the external pipe 3 is sleeved on the corrugated pipe 1 and the O-shaped ring 7, and the axial sealing of the inner wall of the threaded circular pipe 31 and the corrugated pipe, the inner side of an O-shaped ring 7 on the end of the corrugated pipe 1 is provided with a group of clamping rings 5 in two adjacent annular grooves of the corrugated pipe 1, each clamping ring 5 is a complete ring formed by two semicircles, the shape of the inner circle of each clamping ring 5 can be embedded with the annular groove of the corrugated pipe 1 to achieve axial positioning, the diameter of the outer circumference of each clamping ring is larger than the outer diameter of an envelope sleeve 2 of the composite corrugated pipe by a certain dimension, the clamping rings are brought into the inner wall of an external pipe fitting 3 to achieve radial positioning, a threaded circular pipe 31 of the external pipe fitting 3 comprising the end of the corrugated pipe 1, the O-shaped ring 7 and the clamping rings 5 is connected with a threaded sleeve 4 which is sleeved into the composite corrugated pipe in advance through threads, the clamping rings 5 of two semicircular structures are. The snap ring 5 is not limited to be included in the threaded circular tube 31, and it may be included in the threaded sleeve 4, because it mainly functions to position the external connection component 3 at a certain position at the end of the corrugated tube through the snap ring 5, so as to further complete the function of sealing connection, the snap ring 5 is two semicircular structures, and is relatively clamped in the annular grooves of two corrugated tubes of the corrugated tube, and wraps the wave crest of one corrugated tube, but is not limited to several grooves or wave troughs, so as to achieve the sealing connection and strength requirements, and in addition, a groove may be provided at the outer circumference of the snap ring 5, and a snap ring clamping ring 6 is installed, and after the snap ring 5 is installed on the corrugated tube 1, the snap ring clamping ring 6 is sleeved to facilitate the subsequent installation.

Second embodiment of the present invention

Fig. 3 is a plan sectional view of the present embodiment, showing the structure of the present embodiment.

In the embodiment, on the basis of the first embodiment, an annular gasket 8 is arranged between the inner cavity of the threaded circular tube 31 of the external circular tube 3 and the envelope sleeve 2 of the corrugated tube on the inner side of the snap ring 5, and is locked and fixed by the threads of the threaded circular tube 31 and the threaded sleeve 4, so that the sealing between the threaded circular tube 31 and the envelope sleeve 2 of the corrugated tube is increased, namely the sealing performance and the strength of the external connecting assembly and the composite corrugated tube are increased.

The third embodiment of the present invention

Fig. 4 is a plan sectional view of the present embodiment, showing the structure of the present embodiment.

The utility model discloses an 8 insides of cyclic annular packing ring in the second embodiment, the cavity sets up an opening stereoplasm rand 9 (similar to the opening rand on the plastic-aluminum pipe) that has suitable opening distance at screw thread pipe 31 and swivel nut 4, it is fixed through screw locking when screw thread pipe 31 and swivel nut 4, this opening stereoplasm rand 9 can the axial compress tightly cyclic annular packing ring 8 in order to increase holistic sealing performance, can radially increase the locking force between outer coupling assembling and the compound bellows again, be favorable to outer joint strength and sealing performance.

The fourth embodiment of the present invention

Fig. 5 is a plan sectional view of the present embodiment, showing the structure of the present embodiment.

In this embodiment, the annular gasket 8 (see the annular gasket 8 in fig. 3) in the second embodiment is axially moved up to between the snap ring 5 and the O-ring 7, and radially disposed between the exposed corrugated tube 1 and the inner cavity of the threaded circular tube 31, and the annular gasket 8 has a width that can span at least one wave peak (convex arc) of the corrugated tube 1 in the axial direction, but not be trapped in a wave trough (groove) of the corrugated tube 1, so that when the threaded circular tube 31 and the threaded sleeve 4 are fastened by thread locking, the wave peak portion of the corrugated tube 1 and the inner cavity of the threaded circular tube 31 can be well sealed. Here, a snap ring may be added between the annular gasket 8 and the groove of the bellows 1 in order to prevent the annular gasket 8 from being pushed into the groove.

The fifth embodiment of the present invention

Fig. 6 is a plan sectional view of the present embodiment, showing the structure of the present embodiment.

In the fourth embodiment, the threaded sleeve 4 is sleeved on the enveloping outer sleeve 2 of the corrugated pipe 1, in this embodiment, a part of the enveloping outer sleeve 2 on the corrugated pipe 1 is further removed inwards, so that the threaded sleeve 4 is directly sleeved on the exposed corrugated pipe 1, and then is connected and locked with the threaded circular pipe 31 through threads, and the clamping ring 5 and the annular gasket 8 are clamped and sealed.

Of course, above each case all can get rid of partly inwards again with the overcoat of the envelope of bellows to make the direct suit of swivel nut on the bellows, then with the external pipe of screw thread for the screw thread be connected the locking, with snap ring and wide rubber ring centre gripping in the middle of and sealed, consequently, the utility model discloses the outer joint that not only is applicable to composite bellows is sealed, also can be applied to the outer joint sealing needs of the bellows of bare pipe.

The sixth embodiment of the present invention

Fig. 7 is a plan sectional view of the present embodiment, showing the structure of the present embodiment.

On the basis of the first embodiment, a part of the enveloping outer sleeve 2 on the corrugated pipe 1 is removed inwards, so that the thread insert 4 is directly sleeved on the exposed corrugated pipe 1, then the O-shaped ring in front of the snap ring 5 is removed and replaced by the annular gasket 8, and then the thread insert 4 and the threaded circular pipe 31 are connected and locked through threads, so that the snap ring 5 and the annular gasket 8 are clamped and sealed in the middle. Here, as in the fourth embodiment, a snap ring may be added between the annular gasket 8 and the groove of the bellows 1 in order to prevent the annular gasket 8 from being pushed into the groove. Of course, the screw sleeve 4 can be directly sleeved on the envelope outer sleeve 2 of the composite corrugated pipe.

To sum up, the utility model discloses the effectual reliability of having solved the outer connection structure of compound bellows owing to improved its outer coupling assembling's intensity and sealing performance, therefore makes its usage more extensive, is worth popularizing and applying.

Claims

1. The utility model provides an outer coupling assembling of compound bellows, includes bellows (1), envelope overcoat (2) and installs the outer coupling assembling on compound bellows end, its characterized in that: the external connecting component comprises an external pipe fitting (3), a threaded sleeve (4) which can be fixedly connected with the external pipe fitting through threads, an O-shaped ring (7) and a clamping ring (5), wherein the threaded sleeve (4) is sleeved on the composite corrugated pipe in advance, one end of the external pipe fitting (3) is a part which can be externally connected with other pipelines, the other end of the external pipe fitting is a threaded round pipe (31) connected with the threaded sleeve (4), the end of the composite corrugated pipe to be connected is provided with an external enveloping outer sleeve (2) part with a proper length in advance, the O-shaped ring (7) is arranged in one or more annular grooves on the periphery of the end of the exposed corrugated pipe (1), the inner wall of the threaded round pipe (31) of the external pipe fitting (3) is sleeved on the corrugated pipe (1) and the O-shaped ring (7), the axial sealing of the inner wall of the threaded round pipe (31) and the corrugated pipe (1) is achieved through the O-shaped ring (7), and the inner side of the O, a group of clamping rings (5) are arranged in two adjacent annular grooves of the corrugated pipe (1), each clamping ring (5) is a complete ring formed by two semicircles, the shape of the inner circle of each clamping ring can be embedded with the annular groove of the corrugated pipe (1) to achieve axial positioning, the diameter of the outer circumference of each clamping ring is larger than the outer diameter of an envelope sleeve (2) of the composite corrugated pipe by a certain dimension, the clamping rings are brought into the inner wall of an external pipe fitting (3) to achieve radial positioning, the threaded circular pipe (31) of the external pipe fitting (3) comprising the end of the corrugated pipe (1), an O-shaped ring (7) and the clamping rings (5) is connected with a threaded sleeve (4) which is sleeved into the composite corrugated pipe in advance through threads, and the clamping rings (5) of two semicircular structures are clamped and.

2. An external connection assembly of a composite bellows as claimed in claim 1, wherein: the external pipe fitting (3) is characterized in that an annular gasket (8) is arranged between the inner cavity of the threaded circular pipe (31) of the external pipe fitting (3) and the envelope sleeve (2) of the corrugated pipe in the inner side of the clamping ring (5), and the threaded circular pipe (31) and the envelope sleeve (2) of the corrugated pipe are locked and fixed through threads of the threaded circular pipe (31) and the thread sleeve (4), so that sealing between the threaded circular pipe (31) and the envelope sleeve (2) of the corrugated pipe is increased.

3. An external coupling assembly for a composite bellows as claimed in claim 2, wherein: and an opening hard collar (9) with a proper opening is arranged in the inner cavity of the threaded round pipe (31) and the threaded sleeve (4) at the inner side of the annular gasket (8), and the threaded round pipe (31) and the threaded sleeve (4) are locked and fixed through threads.

4. An external connection assembly of a composite corrugated pipe as claimed in claim 3, wherein: the annular gasket (8) axially moves up to a position between the snap ring (5) and the O-shaped ring (7), and is radially arranged between the exposed corrugated pipe (1) and the inner cavity of the threaded circular pipe (31) to be closely contacted, the width of the annular gasket (8) needs to span at least one wave peak of the corrugated pipe (1) in the axial direction and cannot be trapped in a wave trough of the corrugated pipe (1), and when the threaded circular pipe (31) and the threaded sleeve (4) are fastened through thread locking, the wave peak part of the corrugated pipe (1) and the inner cavity of the threaded circular pipe (31) can be well sealed.

5. An external connection assembly of a composite corrugated pipe as claimed in claim 4, wherein: the corrugated pipe is characterized in that a part of the enveloping outer sleeve (2) on the corrugated pipe (1) is removed inwards, so that the threaded sleeve (4) is directly sleeved on the exposed corrugated pipe (1) and then is connected and locked with the threaded circular pipe (31) through threads, and the clamping ring (5) and the annular gasket (8) are clamped in the middle and sealed.

6. An external connection assembly of a composite bellows as claimed in claim 1, wherein: the corrugated pipe is characterized in that a part of the enveloping outer sleeve (2) on the corrugated pipe (1) is removed inwards, the threaded sleeve (4) is directly sleeved on the exposed corrugated pipe (1), the O-shaped ring (7) in front of the clamping ring (5) is removed and replaced by an annular gasket (8), the threaded sleeve (4) is connected and locked with the threaded circular pipe (31) through threads, and the clamping ring (5) and the annular gasket (8) are clamped in the middle and sealed.