CN206504045U - Secondary sealed PE mine pipe - Google Patents

Abstract

The utility model discloses a secondary sealed PE mine pipe, which comprises a PE mine pipe, the end of the PE mine pipe is connected with a tubular joint, and the joint and the PE mine pipe are respectively passed through a primary sealing device and a secondary seal. device connection; the primary sealing device includes a threaded joint and PE mine pipe; the secondary sealing device includes a threaded secondary joint and a protruding ring. The utility model avoids the replacement of the pipeline system in the state of water leakage through the secondary sealing connection between the PE mine pipe and the joint, and realizes rapid maintenance.

Description

Secondary sealed PE mine pipe

technical field

The utility model relates to a pipeline, in particular to a secondary sealed PE mine pipeline.

Background technique

In the construction of mine underground pipe network, the existing mine PE pipes are the replacement products of traditional steel pipes and polyvinyl chloride pipes. Mine pipes must bear a certain pressure and anti-corrosion performance, and usually use PE resin with large molecular weight and good mechanical properties, such as HDPE resin. LDPE resin has low tensile strength, poor pressure resistance, poor rigidity, poor dimensional stability during molding, and difficult connection, so it is not suitable as a material for mine pipelines. Due to the settlement problem of the mine pipe network, water leakage often occurs at the connection between the pipe and the joint. At present, most of the water leakage requires the replacement of the joint or pipe, which is not only time-consuming and labor-intensive, but also high maintenance costs. Therefore, the technology of preventing water leakage without changing joints has always been the object of research by those skilled in the art.

Contents of the invention

The utility model provides a PE mine pipeline with simple structure and avoiding the secondary sealing of joint replacement in the state of water leakage.

A secondary sealed PE mine pipe, comprising a PE mine pipe, the end of the PE mine pipe is connected with a tubular joint, and the joint and the PE mine pipe are respectively connected by a primary sealing device and a secondary sealing device; The primary sealing device includes an external thread arranged on the outer periphery of the joint, the external thread is matched with the internal thread provided on the inner wall of the PE mine pipe, and a rubber ball ring is provided between the end of the external thread and the step on the inner wall of the PE mine pipe; the said The secondary sealing device includes a secondary joint inside the joint. The secondary joint is a tubular structure with an external thread at one end and a magnetic steel embedded in the outer periphery of the other end. The outer wall of the secondary joint cooperates with the inner wall of the joint. The magnetic steel is matched with the The hexagonal magnetic ring on the outer periphery of the joint, the external thread on the secondary joint cooperates with the convex ring on the inner wall of the PE mine pipe, and the inner wall of the convex ring is provided with internal thread; the secondary joint is made of polytetrafluoroethylene. This kind of PE mine pipe is connected through the external thread on the outer periphery of the joint, and the external thread is matched with the internal thread on the inner wall of the PE mine pipe to realize a one-time connection, and the outer wall of the rubber ball ring is tightly matched with the PE mine pipe under the extrusion of the joint, so that the rubber ball The ring is axially stressed and the axial force is changed from the arc-shaped outer circumference of the rubber ball ring to radial force, and the outer diameter of the rubber ball ring is enlarged to improve the sealing performance. When the above-mentioned airtight connection leaks due to external force, the secondary seal The device connects the magnetic steel through the hexagonal magnetic ring, and the magnetic steel drives the external thread of the secondary joint to cooperate with the convex ring on the inner wall of the PE mine pipe to realize the secondary sealing connection, thereby avoiding the replacement of the pipeline system in the state of water leakage and realizing rapid maintenance . The secondary joint is made of polytetrafluoroethylene material and has achieved good corrosion resistance.

The outer periphery of the rubber ball ring is covered with an anti-loosening spring, and the two ends of the anti-loosening spring are respectively connected to the joint and the PE mine pipe. This kind of technical structure is mainly because there is a possibility of loosening between the joint and the PE mine pipe thread connection, and the radial force generated by the anti-loosening spring can avoid the above-mentioned loosening.

The axial center of the rubber ball ring is provided with a through hole with a smooth inner wall, and the outer circumference of the rubber ball ring is arc-shaped.

The outer circumference of one end of the secondary joint embedded in the magnetic steel is matched with the inner wall of the PE mine pipe, and the thickness of a section of the pipe wall of the PE mine pipe in the matching part is smaller than that of other parts. By reducing the thickness of the PE mine pipe, the gap between the hexagonal magnetic ring and the magnetic steel is increased. of suction.

The PE mine pipe of the utility model is connected with the inner thread on the inner wall of the PE mine pipe through the external thread on the outer circumference of the joint to realize a one-time connection, and the outer wall of the rubber ball ring is tightly matched with the PE mine pipe under the extrusion of the joint, so that the rubber ball ring axis The axial force is changed from the arc-shaped outer circumference of the rubber ball ring to the radial force, and the outer diameter of the rubber ball ring is enlarged to improve the sealing performance. When the above-mentioned airtight connection leaks due to external force, the secondary sealing device passes The hexagonal magnetic ring is sucked and connected to the magnetic steel, and the external thread of the secondary joint is driven by the magnetic steel to cooperate with the convex ring on the inner wall of the PE mine pipe to realize the secondary sealing connection, thereby avoiding the replacement of the pipeline system in the state of water leakage and realizing rapid maintenance. The secondary joint is made of polytetrafluoroethylene material and has achieved good corrosion resistance.

Description of drawings

As shown in Fig. 1, it is a schematic cross-sectional structural schematic diagram of the secondary sealing PE mine pipeline of the present invention.

detailed description

As shown in Figure 1, a secondary sealed PE mine pipeline includes a PE mine pipe 1, and a tubular joint 4 is connected to the end of the PE mine pipe 1. The joint 4 and the PE mine pipe 1 pass through a primary sealing device and a secondary seal respectively. Secondary seal connection. The primary sealing device includes an external thread arranged on the outer periphery of the joint 4, and the external thread cooperates with the internal thread provided on the inner wall of the PE mine pipe 1, and a rubber ball ring 2 is arranged between the end of the external thread and the step on the inner wall of the PE mine pipe. One-shot connection is achieved by a threaded close fit. The secondary sealing device includes a secondary joint 6 located inside the joint 4. The secondary joint 6 is a tubular structure with an external thread at one end and a magnetic steel 8 embedded in the outer periphery of the other end. The outer wall of the secondary joint 6 cooperates with the inner wall of the joint, and the magnetic Steel 8 cooperates with the hexagonal magnetic ring 5 arranged on the outer periphery of the joint, and the external thread on the secondary joint 6 cooperates with the convex ring 7 provided on the inner wall of the PE mine pipe, and the inner wall of the convex ring 7 is provided with internal threads; the secondary joint is polytetrafluoroethylene The vinyl material is used to realize the secondary airtight connection through the secondary joint 6, so as to avoid the technical disadvantage of needing to replace the pipe after the primary seal leaks.

As a preferred structure, the outer circumference of the rubber ball ring 2 is covered with an anti-loosening spring 3, and the two ends of the anti-loosening spring 3 are respectively connected to the joint and the PE mine pipe, and an axial force is generated between the joint and the PE mine pipe to avoid loosening. The axial center of the rubber ball ring 2 is provided with a through hole with a smooth inner wall, and the outer circumference of the rubber ball ring is arc-shaped.

In order to increase the attraction force between the magnetic steel 8 and the hexagonal magnetic ring 5, the outer circumference of one end of the secondary joint is embedded in the magnetic steel to match the inner wall of the PE mine pipe, and the thickness of a section of the pipe wall of the PE mine pipe 1 at the matching part is smaller than that of the other parts, forming a thin wall The tube reduces the distance between the magnetic steel 8 and the hexagonal magnetic ring 5 to increase the suction force.

Claims (4)

1. A secondary sealed PE mine pipe, comprising a PE mine pipe, the end of the PE mine pipe is connected with a tubular joint, characterized in that: the joint and the PE mine pipe are respectively passed through a primary sealing device and a secondary seal. The sealing device is connected; the primary sealing device includes an external thread located on the outer periphery of the joint, and the external thread is matched with an internal thread arranged on the inner wall of the PE mine pipe, and a step is provided between the end of the external thread and the inner wall of the PE mine pipe. Rubber ball ring; the secondary sealing device includes a secondary joint located inside the joint. The secondary joint is a tubular structure with an external thread at one end and a magnetic steel embedded in the outer periphery of the other end. The outer wall of the secondary joint cooperates with the inner wall of the joint , the magnetic steel cooperates with the hexagonal magnetic ring arranged on the outer periphery of the joint, the external thread on the secondary joint cooperates with the convex ring on the inner wall of the PE mine pipe, and the inner wall of the convex ring is provided with internal thread; the secondary joint is polytetrafluoroethylene vinyl material. 2. The secondary sealed PE mine pipe as claimed in claim 1, characterized in that: the outer circumference of the rubber ball ring is covered with an anti-loosening spring, and the two ends of the anti-loosening spring are respectively connected to the joint and the PE mine pipe. 3. The secondary sealed PE mine pipeline according to claim 1, characterized in that: said rubber ball ring has a through hole with a smooth inner wall in the axial center, and the outer circumference of the rubber ball ring is arc-shaped. 4. The secondary sealed PE mine pipe as claimed in claim 1, characterized in that: the outer circumference of one end of the secondary joint embedded in the magnetic steel matches the inner wall of the PE mine pipe, and the thickness of a section of the pipe wall of the PE mine pipe at the matching part smaller than the rest.