CN220647095U

CN220647095U - Anticreep bellows joint and contain its bellows

Info

Publication number: CN220647095U
Application number: CN202322097323.4U
Authority: CN
Inventors: 韩振东; 陈士欣
Original assignee: Anhui Liansu Technology Industrial Co ltd
Current assignee: Anhui Liansu Technology Industrial Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-03-22
Anticipated expiration: 2033-08-04

Abstract

The utility model relates to the technical field of corrugated pipes, in particular to an anti-creeping corrugated pipe joint and a corrugated pipe comprising the same, wherein the corrugated pipe joint comprises a first connecting joint, one end of the first connecting joint is used for being welded with the corrugated pipe, and the other end of the first connecting joint is provided with an annular boss; the second connector is sleeved outside the first connector, one end of the second connector is limited by the annular boss, the second connector can rotate relative to the first connector, and the other end of the second connector is connected with the external connector; and the insulating shell is coated on the periphery of the first connector and used for isolating the first connector and the second connector from contact with each other. The utility model solves the problem that the design of the existing corrugated pipe joint anti-leakage structure and the design of the durable structure are difficult to combine, can effectively block the possibility of electric conduction, and simultaneously strengthens the integral connection strength and durability and greatly prolongs the service life through the structural design.

Description

Anticreep bellows joint and contain its bellows

Technical Field

The utility model relates to the technical field of corrugated pipes, in particular to an anti-creeping corrugated pipe joint and a corrugated pipe comprising the same.

Background

The metal corrugated pipe is used as a flexible pressure-resistant pipeline and is often arranged in a fluid conveying system to compensate the mutual displacement among pipelines, and has the advantages of good flexibility, light weight, corrosion resistance, long service life and the like. When the metal corrugated pipe is connected with the water heater, if the water heater is not completely grounded, a water inlet and outlet joint or a gas inlet joint of the water heater can be electrified, and a current loop can be formed with the metal corrugated pipe after the water inlet and outlet joint or the gas inlet joint is connected with the metal corrugated pipe, so that potential safety hazards are caused.

In order to solve the problem, in the prior art, the problem of electric leakage is solved by adding an insulating gasket or adopting an insulating material and other modes, such as Chinese patent literature, a corrugated pipe electric shock protection connector for an electric water heater is disclosed, the corrugated pipe electric shock protection connector comprises a connecting pipe and a nut arranged at the end part of the connecting pipe, the nut adopts a nylon insulating nut for connecting an in-out water connector of the electric water heater, a rubber sealing ring is arranged in the nylon insulating nut, and the nylon insulating nut is adopted, so that the connection sealing performance is improved, and the electric shock phenomenon caused by electric leakage of a metal connector of the electric water heater is avoided. Another chinese patent document discloses a kitchen range pipe with insulation function, an insulation sleeve is arranged between the corrugated pipe body and the external thread joint, and the joint and the pipe body are prevented from forming a loop, so that electric leakage is caused; the corrugated pipe end is processed into a bell mouth to limit the threaded joint, so that the phenomenon of electric breakdown is avoided, but the scheme has certain technical defects as well, the insulating sleeve and the external threaded joint are required to be installed on the pipe body firstly from the product structure, then the bell mouth is expanded to process the pipe body, if the product is positioned wrongly, the stainless steel sleeve can easily touch the pipe body, a current loop is formed between the stainless steel sleeve and the external threads, and the effect of preventing electric leakage is not achieved.

According to the prior art, the design of the anti-creeping structure of the corrugated pipe joint and the design of the durable structure are difficult to achieve, and the corrugated pipe joint which can be compatible with long-term insulation, high in connection strength and long in service life needs to be designed.

Disclosure of Invention

The utility model aims to solve the problem that the design of an anti-creeping structure of the existing corrugated pipe joint and the design of a durable structure are difficult to achieve. The utility model can effectively block the possibility of conduction, and simultaneously strengthens the overall connection strength and durability and greatly prolongs the service life through the structural design.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an anticreep bellows joint, comprising:

one end of the first connecting joint is used for being welded with the corrugated pipe, and the other end of the first connecting joint is provided with an annular boss;

the second connector is sleeved outside the first connector, one end of the second connector is limited by the annular boss, the second connector can rotate relative to the first connector, and the other end of the second connector is connected with the external connector;

and the insulating shell is coated on the periphery of the first connector and used for isolating the first connector and the second connector from contact with each other.

It is to be noted that, according to the utility model, the annular boss is arranged on the first connector for limiting the second connector, and the annular boss limiting mode is different from the traditional inserting and fixing mode, so that the connection strength and the anti-falling strength between the two connectors can be greatly improved, the two connectors cannot be easily broken or separated under repeated bending after long-term use, and the connector has good durability; in addition, the insulating shell is coated outside the first connector along with the outside of the first connector, and is coated on the annular boss, so that the possibility of conduction is effectively blocked at the left side and the right side of the annular boss and at the place where the second connector is possibly contacted with the first connector, and the matching strength of the insulating shell and the first connector is enhanced due to the existence of the annular boss, the insulating shell is not easy to fall off and damage, and can be effectively insulated.

Further, still include the sealing washer of placing inside the second connector and butt on first connector tip, sealing washer's periphery butt is on the inside wall of second connector and is used for preventing that the junction of first connector and second connector from taking place to leak.

It should be noted that, because the second connector can rotate relative to the first connector, the sealing gasket can ensure that the joint of the second connector and the first connector is not leaked, and meanwhile, the risk of electric leakage caused by liquid conduction is reduced.

Further, the end head of the first connector welded with the corrugated pipe is also provided with an outward flange. It should be noted that, the corrugated pipe generally includes a metal corrugated raw pipe and an external coating layer, when the first connector is welded with the corrugated pipe, a part of the coating layer of the corrugated pipe needs to be removed to expose the corrugated raw pipe, and the end of the corrugated raw pipe is subjected to punching and leveling treatment, and the pipe body at the welded position of the corrugated raw pipe can be folded to be 2 times of the thickness of the raw pipe wall, so that the welding strength is improved.

Further, the other end head of the first connector is also provided with a peripheral groove for placing a sealing gasket, and the sealing gasket is limited in the peripheral groove and is abutted with the annular boss.

Further, the insulating housing wraps the peripheral groove and the outer wall of the annular boss and is used for isolating the sealing gasket from contact with the outer wall of the first connector. Like this, sealing washer can overlap and establish on the end of first connector and inlay and establish in the periphery groove, sealing washer's periphery lateral wall and the inseparable butt of the inside wall of second connector, the clearance between isolated first connector and the second connector prevents to take place to leak.

Further, a plurality of grooves are formed in the periphery of the first connector, protruding blocks corresponding to the grooves are arranged on the inner side wall of the insulating shell, and the grooves and the protruding blocks can be mutually embedded. It should be noted that, first connector and insulating housing accessible integral type are moulded plastics and are formed, design have recess and lug that inlay each other and establish, can improve first connector and insulating housing's area of contact, improve adhesive force, insulating housing adopts insulating material to make to isolated the electric current return circuit between second connector and the former pipe of bellows, avoid producing the electric leakage.

Further, an inner thread for connecting with an external connector is further arranged on the inner side wall of the other end of the second connector.

Further, the device also comprises a locking collar which is coated and buckled at the joint of the first connector and the corrugated pipe.

Further, one end of the locking collar is coated on the insulating housing outside the first connector and the other end is coated on the outer coating of the corrugated pipe. The locking collar of cladding and lock joint in the welding seam junction of first connector and bellows can compress tightly on the outer coating of bellows and the outer insulating housing of first connector through withholding, plays fine sealed and fastening effect, strengthens the joint strength of welded junction, and the locking collar still plays certain limiting displacement to the second connector simultaneously, prevents that the second connector from roll-off to the bellows when not connecting the water heater joint.

The utility model also provides an anti-creeping corrugated pipe, which comprises a corrugated pipe, wherein one end and two ends of the corrugated pipe are connected with the anti-creeping corrugated pipe joint.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The utility model is different from the traditional inserting and fixing mode, the annular boss limiting mode can greatly improve the connection strength and the anti-falling strength between two connectors, and the annular boss is not easy to break and fall off under repeated bending after long-term use, and has good durability.

(2) The insulating shell is coated outside the first connector along with the outside of the first connector and is coated on the annular boss, so that the possibility of conduction is effectively blocked at the left side and the right side of the annular boss and at the position where the second connector is possibly contacted with the first connector, the matching strength of the insulating shell and the first connector is enhanced due to the existence of the annular boss, the insulating shell is not easy to fall off and damage, and can be effectively insulated.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic cross-sectional view of a first connector and an insulating housing according to embodiment 2 of the present utility model;

fig. 4 is a schematic application diagram of embodiment 3 in the present utility model.

The graphic indicia are illustrated as follows:

the device comprises a first connector, an 11-annular boss, a 12-flanging, a 2-second connector, a 3-insulating shell, a 31-lug, a 4-sealing gasket, a 5-locking collar and an 8-corrugated pipe.

Detailed Description

The utility model is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

Example 1

As shown in fig. 1 to 2, an anti-creeping bellows joint includes:

a first connector 1, one end of which is used for welding with the corrugated pipe 8 and the other end of which is provided with an annular boss 11;

the second connector 2 is sleeved outside the first connector 1, one end of the second connector 2 is limited by the annular boss 11, the second connector 2 can rotate relative to the first connector 1, and the other end of the second connector 2 is connected with an external connector;

an insulating housing 3 which is coated on the outer circumference of the first connector 1 and serves to isolate the first connector 1 and the second connector 2 from each other.

As shown in fig. 2, the sealing device further comprises a sealing gasket 4 which is arranged inside the second connector 2 and is abutted against the end part of the first connector 1, wherein the periphery of the sealing gasket 4 is abutted against the inner side wall of the second connector 2 and is used for preventing leakage at the joint of the first connector 1 and the second connector 2.

It should be noted that, because the second connector 2 can rotate relative to the first connector 1, the sealing washer 4 can ensure that the joint between the two parts does not leak liquid, and meanwhile, the risk of leakage caused by liquid conduction is reduced.

As shown in fig. 2, the end of the first connector 1 welded to the bellows 8 is further provided with an outward flange 12. It should be noted that, the corrugated tube 8 generally includes a corrugated tube made of metal and an external coating layer, when the first connector 1 is welded to the corrugated tube 8, a part of the coating layer of the corrugated tube 8 needs to be removed to expose the corrugated tube, the end of the corrugated tube is subjected to a punching process, and the tube body at the welded position of the corrugated tube can be folded to be 2 times of the thickness of the tube wall, so that the welding strength is improved, and therefore, the end of the welded end of the first connector 1 and the corrugated tube 8 is provided with an external flanging 12 to improve the welding strength, thereby achieving better connection strength and preventing breakage and leakage.

As shown in fig. 2, the other end of the first connector 1 is further provided with a peripheral groove for placing a sealing gasket 4, and the sealing gasket 4 is limited in the peripheral groove and abuts against the annular boss 11.

As shown in fig. 2, the insulating housing 3 covers the outer peripheral groove and the outer wall of the annular boss 11 and serves to isolate the sealing gasket 4 from contact with the outer wall of the first connector 1.

Thus, the sealing gasket 4 can be sleeved on the end head of the first connector 1 and embedded in the peripheral groove, the peripheral side wall of the sealing gasket 4 is tightly abutted against the inner side wall of the second connector 2, so that a gap between the first connector 1 and the second connector 2 is isolated, and leakage is prevented.

In this embodiment, the inner side wall of the other end of the second connector 2 is further provided with an internal thread for connecting with an external connector.

As shown in fig. 1 to 2, the connector further comprises a locking collar 5 which is coated and fastened at the joint of the first connector 1 and the bellows 8.

As shown in fig. 2, one end of the collar 5 is coated on the insulating housing 3 outside the first connector 1 and the other end is used to coat the outer coating of the bellows 8. The locking collar 5 of cladding and lock joint in the welding seam junction of first connector 1 and bellows 8 can compress tightly on the outer coating of bellows 8 and the outer insulating housing 3 of first connector 1 through the withholding, plays fine sealed and fastening effect, strengthens the joint strength of welded junction, and locking collar 5 still plays certain spacing effect to second connector 2 simultaneously, prevents that second connector 2 from roll-off to bellows 8 when not connecting the water heater joint.

The principle of this embodiment is: the annular boss 11 is arranged on the first connector 1 and used for limiting the second connector 2, so that the connection strength and the anti-falling strength between the two connectors can be greatly improved in a limiting mode of the annular boss 11 unlike a traditional plugging and fixing mode, the annular boss 11 cannot be easily broken or separated under repeated bending after long-term use, and the annular boss has good durability; in addition, insulating housing 3 cladding is in the outside of first connector 1 along with, also cladding simultaneously on annular boss 11, in the place that the left and right sides of annular boss 11 and second connector 2 probably contacted with first connector 1 like this, the effectual possibility of blocking electric conduction, and because the existence of annular boss 11, the cooperation intensity of insulating housing 3 and first connector 1 has been strengthened, insulating housing 3 is difficult for droing also difficult damaged, can effectively insulate, when connecting the water heater, can be through insulating housing 3 outside first connector 1 with second connector 2 and bellows 8 completely isolated, prevent that the electric current from forming the return circuit on bellows 8, the possibility of electric leakage has effectively been avoided, and the connection is stable, firm, bearing capacity is strong, moreover, the steam generator is simple in structure, and simple to operate.

Example 2

This embodiment is similar to embodiment 1, except that in this embodiment:

as shown in fig. 3, a plurality of grooves are formed on the outer periphery of the first connector 1, the inner side wall of the insulating housing 3 is provided with a protruding block 31 corresponding to the position of the grooves, and the grooves and the protruding blocks 31 can be mutually embedded.

It should be noted that, the first connector 1 and the insulating housing 3 may be formed by integral injection molding, and the grooves and the protruding blocks 31 embedded with each other are designed, so that the contact area between the first connector 1 and the insulating housing 3 can be increased, the adhesive force can be increased, the insulating housing 3 is made of insulating materials, thereby isolating the current loop between the second connector 2 and the original pipe of the corrugated pipe 8, and avoiding electric leakage.

Example 3

As shown in fig. 4, an anti-creeping corrugated pipe comprises a corrugated pipe 8, and an anti-creeping corrugated pipe 8 joint is connected with one end and two ends of the corrugated pipe 8.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. An anticreep bellows joint, characterized by comprising:

one end of the first connector (1) is used for being welded with the corrugated pipe (8) and the other end of the first connector is provided with an annular boss (11);

the second connector (2) is sleeved outside the first connector (1) and one end of the second connector is limited by the annular boss (11), the second connector (2) can rotate relative to the first connector (1), and the other end of the second connector (2) is connected with an external connector;

and the insulating shell (3) is coated on the periphery of the first connector (1) and is used for isolating the first connector (1) and the second connector (2) from being contacted with each other.

2. The anti-creeping corrugated pipe joint according to claim 1, further comprising a sealing gasket (4) placed inside the second joint head (2) and abutting against an end of the first joint head (1), wherein an outer circumference of the sealing gasket (4) abuts against an inner side wall of the second joint head (2) and is used for preventing leakage at a joint of the first joint head (1) and the second joint head (2).

3. An anti-creeping corrugated pipe joint according to claim 2, characterized in that the end of the first joint (1) welded to the corrugated pipe (8) is further provided with an external flange (12).

4. The anti-creeping corrugated pipe joint according to claim 2, wherein the other end head of the first connecting joint (1) is further provided with a peripheral groove for placing the sealing gasket (4), and the sealing gasket (4) is limited in the peripheral groove and is abutted against the annular boss (11).

5. An anti-creeping bellows joint according to claim 4, characterized in that the insulating housing (3) covers the peripheral groove and the outer wall of the annular boss (11) and serves to insulate the sealing washer (4) from contact with the outer wall of the first joint (1).

6. The anti-creeping corrugated pipe joint according to claim 1, wherein a plurality of grooves are provided on the outer circumference of the first connecting joint (1), the inner side wall of the insulating housing (3) is provided with a protruding block (31) corresponding to the groove, and the grooves and the protruding block (31) are embedded with each other.

7. The anti-creeping corrugated pipe joint according to claim 1, wherein the inner side wall of the other end of the second connecting head (2) is further provided with an inner thread for connecting with an external joint.

8. An anti-creeping bellows joint according to claim 1, further comprising a locking collar (5) covering and fastened to the junction of the first joint (1) and the bellows (8).

9. An anti-creeping bellows joint according to claim 8, characterized in that one end of the locking collar (5) is coated on the insulating housing (3) outside the first joint (1) and the other end is used for coating the outer coating of the bellows (8).

10. An anti-creeping corrugated pipe, characterized by comprising a corrugated pipe (8), wherein one end and two ends of the corrugated pipe (8) are connected with the anti-creeping corrugated pipe (8) joint according to any one of claims 1-9.