CN219076535U

CN219076535U - Multifunctional clamp for lining plastic socket type metal pipe compounding process

Info

Publication number: CN219076535U
Application number: CN202223161143.XU
Authority: CN
Inventors: 尹希伟; 肖和飞; 张新爱; 罗安明
Original assignee: Hunan Zhenhui Pipe Industry Co ltd
Current assignee: Hunan Zhenhui Pipe Industry Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-26
Anticipated expiration: 2032-11-28

Abstract

The utility model provides a multifunctional clamp for a lining plastic socket type metal pipe compounding process, which comprises a metal pipe and a plastic pipe positioned in the metal pipe, wherein the multifunctional clamp comprises an auxiliary sealing assembly and a main sealing clamp used for sealing one end of the plastic pipe, pressurized gas is filled into the plastic pipe through the main sealing clamp, the auxiliary sealing assembly is detachably connected with the main sealing clamp, the auxiliary sealing assembly comprises an air bag seat and an inflatable air bag, the air bag is annular, the air bag is sleeved on the air bag seat, and when the main sealing clamp seals one end of the plastic pipe and inflates the air bag, the air bag contacts and presses the contact part of the plastic pipe and the step part of the metal pipe. The utility model realizes the sealing of one end of the plastic pipe, and the contact part of the plastic pipe and the ladder of the inner wall of the socket end of the metal pipe is sealed by the auxiliary sealing component, so that the air leakage caused by the shearing force of the ladder of the metal pipe and the cracking of the outer wall of the plastic pipe under the action of heating and melting in the process of inflating and pressurizing the plastic pipe is prevented.

Description

Multifunctional clamp for lining plastic socket type metal pipe compounding process

Technical Field

The utility model belongs to the technical field of metal plastic composite pipe processing, and particularly relates to a multifunctional clamp for a lining plastic socket type metal pipe composite process.

Background

The metal plastic composite pipe is formed by compounding a metal pipe and a plastic pipe sleeved in the metal pipe, namely the metal pipe is lined with the plastic pipe. During the composite processing, the inner plastic pipe is inflated and pressurized to make the outer surface of the plastic pipe fit with the inner surface of the metal pipe, and then the whole pipe is heated to make the outer surface of the plastic pipe melt and the inner surface of the metal pipe adhere and composite together. When the plastic pipe is inflated and pressurized, the two ends of the plastic pipe are required to be sealed, and only a channel for inflating and pressurizing the inside of the plastic pipe is reserved. However, since one end of the metal pipe is a socket end and the other end is a socket end, the inner wall of the socket end is stepped for the socket end. In the inflation pressurizing process of the plastic pipe, the plastic pipe at the step is sheared by the step on the inner wall of the metal pipe, in addition, in the compounding process, the outer wall of the plastic pipe is molten after the metal pipe is heated, the contact part between the plastic pipe and the step of the metal pipe is easily cracked due to the combination of the two factors, and after the crack is generated, the gas in the plastic pipe leaks in the inflation pressurizing overshoot, so that the internal pressure of the plastic pipe is insufficient, and the compounding quality of the metal plastic compound pipe is affected.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a multifunctional clamp for a lining plastic socket type metal pipe compounding process, wherein one end of a plastic pipe is sealed through a main sealing clamp when the metal plastic pipe compounding process is carried out, the main sealing clamp is inserted into one end of the plastic pipe, the reliable sealing of one end of the plastic pipe is realized, the contact part of the plastic pipe and the inner wall step of the socket end of the metal pipe is sealed through an auxiliary sealing assembly, the gas leakage caused by the split of the outer wall of the plastic pipe due to the shearing force of the step of the metal pipe and the combined action of the heated metal pipe in the inflation pressurizing process of the plastic pipe is prevented, the subsequent compounding quality is ensured, the auxiliary sealing assembly is connected with the main sealing clamp, and the auxiliary sealing assembly can be connected to a position to be sealed after the plastic pipe is inserted into the main sealing clamp.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a multifunctional clamp for lining plastic socket joint formula metal pipe composite technology, lining plastic socket joint formula metal pipe includes the metal pipe and is located the plastic tubing of metal intraductal, multifunctional clamp includes auxiliary seal assembly and is used for sealing the main seal anchor clamps of plastic tubing one end, and the pressurized gas fills in the plastic tubing through main seal anchor clamps, auxiliary seal assembly and main seal anchor clamps detachably connect, and auxiliary seal assembly includes gasbag seat and inflatable gasbag, and the gasbag is annular, and the gasbag cover is on the gasbag seat, and after main seal anchor clamps seal plastic tubing one end and aerify the gasbag, the gasbag contacts and compresses tightly the junction of plastic tubing and metal tube ladder department.

As a further improvement of the above technical scheme:

the auxiliary sealing assembly further comprises a supporting seat and at least one supporting rod, one end of the supporting rod is connected with the supporting seat, the other end of the supporting rod is connected with the air bag seat, and the air bag seat is circular.

The axial section of the air bag seat is arc-shaped.

The auxiliary sealing assembly further comprises an air pipe, one end of the air pipe is connected with an external air supply system, and the other end of the air pipe penetrates through the main sealing clamp and then is connected with the air bag.

The supporting seat is detachably connected with the main sealing clamp.

The supporting seat is cylindrical, the main sealing clamp is provided with a clamp flange, the supporting seat is provided with a sealing device flange, and the clamp flange is connected with the sealing device flange.

The main sealing clamp comprises a supporting plate, an expansion ring, an annular inner die head and an annular outer die head, wherein the inner die head and the outer die head are arranged on the supporting plate in a concentric line mode, the inner diameter of the outer die head is larger than the outer diameter of the inner die head, a gap for the pipe end of the plastic pipe to be inserted is reserved between the inner surface of the outer die head and the outer surface of the inner die head, a groove for accommodating the expansion ring is formed in the outer surface of the inner die head, the groove is communicated with the gap, the expansion ring is made of rubber, the inside of the expansion ring is inflatable, and the expansion ring is communicated with an external inflation device.

The main sealing clamp further comprises a supporting shaft, the supporting shaft is cylindrical, and gas used for inflating and pressurizing the plastic pipe and gas used for inflating the air bag are connected through the supporting shaft.

The multifunctional clamp further comprises a sleeve, and the sleeve is sleeved between the metal pipe and the plastic pipe at the step.

The beneficial effects of the utility model are as follows: when carrying out the compound technology to metal plastic composite pipe, the one end of plastic tubing is sealed through main seal anchor clamps, and main seal anchor clamps have been inserted to the one end of plastic tubing, have realized the reliable seal to one end of plastic tubing, seal the contact position of plastic tubing and metal tube socket end inner wall ladder department through auxiliary seal assembly, prevent to lead to splitting to cause the gas leakage because of the shearing force of metal tube ladder department and the combined action that heated metal tube made plastic tubing outer wall melt in the plastic tubing inflation pressurization in-process, guaranteed follow-up compound quality, auxiliary seal assembly and main seal anchor clamps are connected, and simple to use is convenient and reliable, insert the plastic tubing back auxiliary seal assembly can be linked to and wait to seal the position.

Drawings

FIG. 1 is a schematic view of an airbag according to an embodiment of the present utility model when not inflated.

FIG. 2 is a schematic view of the structure of an inflated airbag according to an embodiment of the present utility model.

FIG. 3 is a schematic view of an auxiliary seal assembly according to one embodiment of the present utility model.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1-3, the multifunctional clamp for the composite process of the plastic-lined socket type metal pipe comprises a metal pipe 1, a plastic pipe 2 and a sleeve 4, wherein the plastic pipe 2 is positioned in the metal pipe 1. The metal tube 1 is socket joint type, one end of the metal tube 1 is a socket end, the other end is a socket end, and one end inner wall of the socket end is in a ladder shape.

The multifunctional clamp comprises an auxiliary sealing assembly and a main sealing clamp 3.

The main sealing jig 3 is used for sealing one end of the plastic pipe 2, and the main sealing jig 3 includes a support shaft 32, a support plate 31, an expansion ring (not shown), an annular inner die 33, and an annular outer die 34.

The support shaft 32 is cylindrical, and an axial through hole 321 is provided in the support shaft 32. The support plate 31 is sleeved on the support shaft 32. The inner die head 33 and the outer die head 34 are arranged on the supporting plate 31, the inner die head 33 and the outer die head 34 are coaxial, the inner die head 33 and the through hole 321 are coaxial, the inner die head 33 and the outer die head 34 are arranged on the same side of the supporting plate 31, and one end of the supporting shaft 32, which is close to the inner die head 33, is provided with the clamp flange 10. The inner diameter of the outer die 34 is larger than the outer diameter of the inner die 33 such that a gap 36 is present between the inner surface of the outer die 34 and the outer surface of the inner die 33 for the pipe end of the plastic pipe 2 to be inserted. Obviously, the gap 36 is annular. The outer surface of the inner die head 33 is provided with a groove 37 for accommodating the expansion ring, and the groove 37 is provided with one circle along the circumferential direction of the inner die head 33. The groove 37 communicates with the gap 36. The expansion ring is made of rubber, the inside of the expansion ring is inflatable, and the expansion ring expands after being inflated. The expansion ring is communicated with an external inflation device through an inflation tube. Preferably, the cross section of the recess 37 is trapezoidal.

The inner die head 33 is also provided with an air charging hole 38, one end of the air charging hole 38 is opened on the inner surface of the inner die head 33, and the other end is communicated with the groove 37. One end of the inflation tube of the expansion ring is connected with an external inflation system, and the other end of the inflation tube passes through the inflation hole 38 and then is connected with the expansion ring.

To facilitate insertion of the plastic tube 2 into the gap 36, a flare is provided in the end face of the gap 36 adjacent to the outer die 34.

For easy installation, the inner die 33 may be provided in a splice-mounted form, the splice faces passing through the air-filling holes 38 and the grooves 37, and two splice parts of the inner die 33 being connected by bolts.

The auxiliary sealing assembly and the main sealing jig 3 are detachably connected. The auxiliary sealing assembly includes a support seat 41, an airbag seat 43, an airbag 44, an air tube 45, and at least one support rod 42.

The support seat 41 is detachably connected with the main sealing jig 3. The supporting seat 41 is cylindrical, the sealing device flange 11 is arranged on the supporting seat 41, and the clamp flange 10 is connected with the sealing device flange 11 so as to realize the connection between the main sealing clamp 3 and the supporting seat 41. After the support base 41 and the support shaft 32 are connected, the support base 41 and the support shaft 32 are concentric.

One end of the support rod 42 is connected to the support seat 41, and the other end is connected to the airbag seat 43. Preferably, a plurality of support rods 42 are provided, the plurality of support rods 42 are arranged radially, and the plurality of support rods 42 are located in the same plane.

The airbag seat 43 is circular. The inner side of the airbag seat 43 is connected to the support rod 42. Preferably, the axial section of the air bag seat 43 is arc-shaped, and the air bag seat 43 is concave toward the support rod 42. The axial section means that the section passes through the center of the circular airbag housing 43.

The air bag 44 is annular, the air bag 44 can be inflated, and the air bag 44 is sleeved on the air bag seat 43 and supported in the inner concave surface. Preferably, the bladder 44 is rubber.

One end of the air pipe 45 is connected with an external air supply system, and the other end of the air pipe passes through the through hole 321 and the supporting seat 41 and then is connected with the air bag 44 through the air charging nozzle 46.

The sleeve 4 is sleeved between the metal pipe 1 and the plastic pipe 2 at the step, and the sleeve 4 is made of tetrafluoroethylene. The sleeve 4 has the functions of separating the socket end of the metal pipe 1 from the plastic pipe 2, preventing the plastic pipe 2 from being compositely bonded with the step of the socket end, and supporting the plastic pipe 2 at the step when the air bag 44 is inflated.

Based on the structure, the working principle and the working process of the utility model are as follows: when the multifunctional clamp is used for sealing the socket end, one end of the plastic pipe 2 is inserted into the gap 36, after one end of the plastic pipe 2 is inserted into the gap 36, the air bag 44 of the auxiliary sealing assembly is connected with the step contact position of the plastic pipe 2 and the metal pipe 1, the air bag 44 and the expansion ring are inflated, after the air bag 44 is inflated, the air bag 44 contacts and elastically presses the inner wall of the plastic pipe 2 for one circle, and the contact position of the air bag 44 and the inner wall of the plastic pipe 2 corresponds to the contact position of the step position of the plastic pipe 2 and the metal pipe 1. The expansion ring is inflated to contact and press the inner wall of the plastic pipe 2 for one circle, and is matched with the supporting plate 31 and the like to realize the sealing of one end of the plastic pipe 2 and the sealing of the other end of the plastic pipe 2. After sealing, the plastic tube 2 is inflated and pressurized through the through hole 321, gas enters the plastic tube 2 through the through hole 321 and the supporting seat 41, the outer surface of the plastic tube 2 contacts the inner surface of the metal tube 1 after being inflated and pressurized, and then the plastic tube 2 is heated, and the outer surface of the plastic tube 2 is melted and the inner surface of the metal tube 1 is bonded together. After the processing is completed, the air bag 44 and the air in the expansion ring are discharged, and the multifunctional clamp is taken out.

Finally, what is necessary here is: the above embodiments are only for further detailed description of the technical solutions of the present utility model, and should not be construed as limiting the scope of the present utility model, and some insubstantial modifications and adjustments made by those skilled in the art from the above description of the present utility model are all within the scope of the present utility model.

Claims

1. A multifunctional clamp for a lining plastic socket joint type metal pipe compounding process, wherein the lining plastic socket joint type metal pipe comprises a metal pipe (1) and a plastic pipe (2) positioned in the metal pipe (1), and is characterized in that the multifunctional clamp comprises an auxiliary sealing assembly and a main sealing clamp (3) used for sealing one end of the plastic pipe (2), pressurized gas is filled into the plastic pipe (2) through the main sealing clamp (3), the auxiliary sealing assembly is detachably connected with the main sealing clamp (3), the auxiliary sealing assembly comprises an air bag seat (43) and an inflatable air bag (44), the air bag (44) is annular, the air bag (44) is sleeved on the air bag seat (43), and after the main sealing clamp (3) seals one end of the plastic pipe (2) and inflates the air bag (44), the air bag (44) is in contact with and compresses a contact part of the plastic pipe (2) and a step of the metal pipe (1).

2. The multifunctional clamp according to claim 1, characterized in that: the auxiliary sealing assembly further comprises a supporting seat (41) and at least one supporting rod (42), one end of the supporting rod (42) is connected with the supporting seat (41), the other end of the supporting rod is connected with the air bag seat (43), and the air bag seat (43) is circular.

3. The multifunctional clamp according to claim 2, characterized in that: the axial section of the air bag seat (43) is arc-shaped.

4. The multifunctional clamp according to claim 2, characterized in that: the auxiliary sealing assembly further comprises an air pipe (45), one end of the air pipe (45) is connected with an external air supply system, and the other end of the air pipe passes through the main sealing clamp (3) and then is connected with an air bag (44).

5. The multifunctional clamp according to claim 2, characterized in that: the supporting seat (41) is detachably connected with the main sealing clamp (3).

6. The multi-function fixture according to claim 5, wherein: the supporting seat (41) is cylindrical, the main sealing clamp (3) is provided with a clamp flange (10), the supporting seat (41) is provided with a sealing device flange (11), and the clamp flange (10) is connected with the sealing device flange (11).

7. The multifunctional clamp according to any one of claims 1 to 6, characterized in that: the main sealing clamp (3) comprises a supporting plate (31), an expansion ring, an annular inner die (33) and an annular outer die (34), wherein the inner die (33) and the outer die (34) are concentrically arranged on the supporting plate (31), the inner diameter of the outer die (34) is larger than the outer diameter of the inner die (33), a gap (36) for inserting the pipe end of the plastic pipe (2) is reserved between the inner surface of the outer die (34) and the outer surface of the inner die (33), a groove (37) for accommodating the expansion ring is formed in the outer surface of the inner die (33), the groove (37) is communicated with the gap (36), the expansion ring is made of rubber, and is inflatable inside and communicated with an external inflation device.

8. The multi-function fixture according to claim 7, wherein: the main sealing clamp (3) further comprises a supporting shaft (32), the supporting shaft (32) is cylindrical, and gas for inflating and pressurizing the plastic pipe (2) and gas for inflating the air bag (44) are connected through the supporting shaft (32).

9. The multifunctional clamp according to claim 1, characterized in that: the multifunctional clamp further comprises a sleeve (4), and the sleeve (4) is sleeved between the metal pipe (1) and the plastic pipe (2) at the step.