A connecting structure of a mine plastic pipeline

Abstract

This application discloses a connection structure for a mining plastic pipe, relating to the field of pipe connection technology, comprising: a pipe connection section, the end of which is provided with a flared section; a plug-in assembly, the plug-in assembly including a sealing connector and a sealing plug, the sealing connector and the sealing plug being respectively inserted into the flared sections of the two pipe connection sections, the ends of the sealing connector and the sealing plug extending out of the flared sections of the pipe connection section and cooperating with each other; and a connecting fitting, the connecting fitting being simultaneously sleeved on the flared sections of the two pipe connection sections; the flared pipe connection section cooperates with the sealing connector and the sealing plug to form a connection structure through the connecting fitting, thereby enhancing the tightness and sealing effect of the connection.

Description

Technical Field

[0001] This application relates to the field of pipe connection technology, and in particular to a connection structure for mining plastic pipes. Background Technology

[0002] The mining pipe industry offers a wide variety of products, including seamless steel pipes, welded steel pipes, cast iron pipes, and plastic pipes. While meeting basic performance requirements such as high strength, wear resistance, and corrosion resistance, mining pipes also require specialized designs based on different mineral types and working conditions. Considering the high strength, pressure resistance, wear resistance, and corrosion resistance of mining pipe materials, steel wire mesh composite pipes are currently widely used, with electrofusion connections employed.

[0003] However, the end sealing surface of the pipe is too small. When transporting slurry, dust, or slag, prolonged media transport can damage the pipe end sealing ring, expose the steel wire, and cause water leakage into the pipe. Because conventional electrofusion connections have a certain length of groove at the joint, media transport can also cause wear on the electrofusion fittings, reduce the strength of the joint, and cause the fittings to break.

[0004] Therefore, there is a need to provide a connection structure for mining plastic pipes that can enhance the strength of the pipe connections. Utility Model Content

[0005] The main objective of this application is to provide a connection structure for mining plastic pipes, which aims to solve the technical problem of low strength at the connection points of existing mining pipes.

[0006] To achieve the above objectives, this application provides a connection structure for a mining plastic pipe, comprising: Pipe connection section, wherein the end of the pipe connection section is provided with a flared section; A plug-in assembly, comprising a sealing connector and a sealing plug, wherein the sealing connector and the sealing plug are respectively inserted into the flared sections of the two pipe connection sections, and the ends of the sealing connector and the sealing plug extend out of the flared sections of the pipe connection sections and cooperate with each other. A connecting fitting is fitted onto the flared section of the connection between the two pipe sections.

[0007] Optionally, the sidewall of the sealing plug is provided with an annular limiting boss, the sidewall of the limiting boss is attached to the end face of the flared section, and the outer wall of the limiting boss is attached to the inner wall of the connecting pipe.

[0008] Optionally, the inner wall of the connecting pipe fitting is provided with an annular positioning plate, one side of which is attached to the side wall of the limiting boss away from the flared section.

[0009] Optionally, the side wall of the sealing joint is provided with an annular positioning boss, the outer wall of the positioning boss is attached to the inner wall of the connecting pipe, the side wall of the positioning boss is attached to the end face of the flared section of another pipe connecting section, and the side wall of the positioning boss away from the flared section is attached to the side wall of the positioning plate away from the limiting boss.

[0010] Optionally, the positioning boss extends away from the flared section to form an annular insertion interface, the sealing plug is inserted into the insertion interface, and the end face of the insertion interface is attached to the side of the positioning plate away from the limiting boss.

[0011] Optionally, the connector is flared, and the sealed plug is inserted into the side wall of the connector and fits against the inner wall of the connector.

[0012] Optionally, the inner ring of the positioning plate is fitted to the outer wall of the limiting boss.

[0013] Optionally, the end of the sealing connector and sealing plug inserted into the flared section is chamfered or rounded towards the outer wall.

[0014] Optionally, the ends of both the sealing connector and the sealing plug extend into connecting pipes.

[0015] Optionally, the sealing connector, sealing plug, and pipe have the same inner diameter.

[0016] The beneficial effects that this application can achieve are as follows: the flared pipe connection section and the sealing joint and sealing plug cooperate with each other to form an interference fit, and the connection structure is formed by the connecting pipe fittings to enhance the tightness and sealing effect of the connection, effectively extend the length of the sealing surface, avoid the medium from directly scouring the pipe end face, reduce wear and leakage risk, and at the same time the connecting pipe fittings can provide protection for the connection of the two pipes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the connection structure of a mining plastic pipe in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the connection structure of a sealing joint and a sealing plug for a mining plastic pipe, as described in an embodiment of this application, connecting the pipe section. Figure 3 This is a schematic diagram of the connection structure and fittings for a mining plastic pipe according to an embodiment of this application. Figure 4 This is a schematic diagram of the connection structure of a mining plastic pipe in an embodiment of this application.

[0019] Figure label: 1-Pipe connection section, 2-Connecting pipe fitting, 21-Positioning plate, 3-Sealing plug, 31-Limiting boss, 4-Sealing connector, 41-Positioning boss.

[0020] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] Example See attached document Figure 1-4 This embodiment provides a connection structure for a mining plastic pipe, including a pipe connection section 1, a plug assembly, and a connecting fitting 2. The end of the pipe connection section 1 is provided with a flared section. The plug assembly includes a sealing connector 4 and a sealing plug 3, which are respectively inserted into the flared sections of the two pipe connection sections 1. The ends of the sealing connector 4 and the sealing plug 3 extend out of the flared sections of the pipe connection section 1 and cooperate with each other. The connecting fitting 2 is simultaneously fitted onto the flared sections of the two pipe connection sections 1. The flared pipe connection section 1 cooperates with the sealing connector 4 and the sealing plug 3 to form an interference fit. The connecting fitting 2 forms a connection structure to enhance the tightness and sealing effect of the connection, effectively extend the length of the sealing surface, prevent the medium from directly scouring the pipe end face, reduce wear and leakage risks, and at the same time, the connecting fitting 2 can provide protection for the connection of the two pipes.

[0026] In this embodiment, both the sealing connector 4 and the sealing plug 3 are internal electrofusion sealing components with external electrodes. The connecting pipe 2 uses externally welded electrofusion pipe components or steel-framed electrofusion pipe components. The sealing connector 4, the sealing plug 3, and the pipe connecting section 1 are made of the same material, including but not limited to wear-resistant, flame-retardant, and antistatic materials. During installation, the end of the pipe connecting section 1 is heated to soften the pipe end, and then flared to form an enlarged inner diameter structure. After cooling and setting, the sealing connector 4 and the sealing plug 3 are welded to the inner walls of both ends of the connecting pipe 2, so that the ends of the sealing connector 4 and the sealing plug 3 fit together. Ensure airtightness; then insert the sealing connector 4 and sealing plug 3 into the flared sections of the two pipe connection sections 1 to be connected. Heat the pipes with an electric welding machine to melt and bond the contact surfaces of the connecting fittings 2 and the pipes. After cooling, an integrated connection is formed. The flared pipe connection section 1, the sealing connector 4, and the sealing plug 3 cooperate with each other to form a connection structure through the connecting fittings 2, thereby enhancing the tightness and sealing effect of the connection, effectively extending the length of the sealing surface, preventing the medium from directly scouring the pipe end face, reducing wear and leakage risks, and at the same time, the connecting fittings 2 can provide protection at the connection of the two pipes.

[0027] As an optional implementation, the side wall of the sealing plug 3 is provided with an annular limiting protrusion 31. The side wall of the limiting protrusion 31 is attached to the end face of the flared section, and the outer wall of the limiting protrusion 31 is attached to the inner wall of the connecting pipe 2. The limiting protrusion 31 is located near the end of the sealing plug 3. When the sealing plug 3 is inserted into the flared section, the shape of the softened flared section matches the shape of the sealing plug 3, so that the outer wall of the sealing plug 3 can be attached to the inner wall of the flared section. During the insertion process, the end face of the flared section moves to the position of the limiting protrusion 31. The limiting protrusion 31 can block the pipe connecting section 1 and play a positioning role for the pipe connecting section 1.

[0028] As an optional implementation, the inner wall of the connecting pipe fitting 2 is provided with an annular positioning plate 21. One side of the positioning plate 21 is attached to the side wall of the limiting boss 31 away from the flared section. The positioning plate 21 is located in the middle of the connecting pipe fitting 2. When the sealing plug 3 is inserted into the connecting pipe, the limiting boss 31 will abut against the side wall of the positioning ring, which can play a role in quickly positioning the sealing plug 3, so that the sealing plug 3 and the sealing connector 4 have the same length in the connecting pipe fitting 2.

[0029] As an optional implementation, the side wall of the sealing connector 4 is provided with an annular positioning boss 41. The outer wall of the positioning boss 41 is attached to the inner wall of the connecting pipe 2, and the side wall of the positioning boss 41 is attached to the end face of the flared section of another pipe connecting section 1. The side wall of the positioning boss 41 away from the flared section is attached to the side wall of the positioning plate 21 away from the limiting boss 31. When the sealing connector 4 is inserted into the flared section, the positioning boss 41 can position the installation position of the sealing connector 4, making the installation more convenient. At the same time, when the sealing connector 4 is inserted into the connecting pipe 2, the side wall of the positioning boss 41 will abut against the side wall of the positioning plate 21, which can quickly position the installation of the sealing connector 4. The positioning boss 41 and the limiting boss 31 form a clamping structure for the positioning plate 21.

[0030] As an optional implementation, the positioning boss 41 extends away from the flared section to form an annular insertion interface. The sealing plug 3 is inserted into the insertion interface, and the end face of the insertion interface is attached to the side wall of the limiting boss 31. The insertion of the sealing plug 3 into the insertion interface makes the sealing plug 3 and the sealing connector 4 form a plug-in structure. The connection between the two pipe sections 1 has a stronger ability to resist radial impact and a higher connection strength. At the same time, in order to play a positioning role in the installation of the sealing connector 4, the end face of the insertion interface is attached to the side of the positioning plate 21 away from the limiting boss 31.

[0031] As an optional implementation, the connector is flared, and the sealing plug 3 is inserted into the side wall of the connector and fits against the inner wall of the connector. The flared connector can guide the sealing connector 4 and the sealing plug 3 during the connection. At the same time, the side wall of the sealing plug 3 inserted into the connector and fits against the inner wall of the connector can ensure a seamless connection between the sealing plug 3 and the sealing connector 4, making the connection more stable.

[0032] As an optional implementation, the inner ring of the positioning plate 21 is attached to the outer wall of the limiting boss 31. Since the sealing plug 3 needs to be matched with the insertion interface, the diameter of the part of the sealing plug 3 near the end gradually decreases and the outer wall is inclined. In order to avoid gaps between the positioning plate 21 and the side wall of the sealing plug 3, the inner ring of the positioning plate 21 is inclined so that the inner ring of the positioning plate 21 can be completely attached to the outer wall of the sealing plug 3.

[0033] As an optional implementation, the end face of the sealing connector 4 and the sealing plug 3 inserted into the flared section is chamfered or rounded towards the outer wall, which can reduce the diameter of the end of the sealing connector 4 and the sealing plug 3 and play a guiding role when inserted into the flared section. At the same time, the root of the flared section is provided with a structure that is the same as the end of the sealing connector 4 or the sealing plug 3, so that the sidewalls of the sealing connector 4 and the sealing plug 3 can completely fit into the inner wall of the flared section.

[0034] As an optional implementation, the ends of both the sealing connector 4 and the sealing plug 3 extend into the connecting pipe 2, which can play a role in quick positioning when the sealing connector 4 or the sealing plug 3 is inserted into the flared section. At the same time, the part of the sealing connector 4 or the sealing plug 3 extending into the connecting pipe can support the pipe connecting section 1, resulting in a stronger connection.

[0035] As an optional implementation, the sealing connector 4, the sealing plug 3, and the pipe connection section 1 have the same inner diameter, so that the connection between the inner wall of the pipe connection section 1 and the inner wall of the sealing connector 4 and the sealing plug 3 is smooth, avoiding unevenness at the connection and preventing impurities from remaining at the connection.

[0036] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A connection structure for a mining plastic pipe, characterized in that, include: Pipe connection section, wherein the end of the pipe connection section is provided with a flared section; A plug-in assembly, comprising a sealing connector and a sealing plug, wherein the sealing connector and the sealing plug are respectively inserted into the flared sections of the two pipe connection sections, and the ends of the sealing connector and the sealing plug extend out of the flared sections of the pipe connection sections and cooperate with each other. A connecting fitting is fitted onto the flared section of the connection between the two pipe sections.

2. The connection structure of a mining plastic pipe as described in claim 1, characterized in that, The sealing plug has an annular limiting boss on its side wall. The side wall of the limiting boss is attached to the end face of the flared section, and the outer wall of the limiting boss is attached to the inner wall of the connecting pipe.

3. The connection structure of a mining plastic pipe as described in claim 2, characterized in that, The inner wall of the connecting pipe is provided with an annular positioning plate, one side of which is attached to the side wall of the limiting boss away from the flared section.

4. The connection structure of a mining plastic pipe as described in claim 3, characterized in that, The sealing joint has an annular positioning boss on its side wall. The outer wall of the positioning boss is attached to the inner wall of the connecting pipe. The side wall of the positioning boss is attached to the end face of the flared section of another pipe connection section. The side wall of the positioning boss away from the flared section is attached to the side wall of the positioning plate away from the limiting boss.

5. The connection structure of a mining plastic pipe as described in claim 4, characterized in that, The positioning boss extends away from the flared section to form an annular insertion interface. The sealing plug is inserted into the insertion interface, and the end face of the insertion interface is attached to the side of the positioning plate away from the limiting boss.

6. The connection structure of a mining plastic pipe as described in claim 5, characterized in that, The connector is flared, and the sealed plug is inserted into the side wall of the connector and fits against the inner wall of the connector.

7. The connection structure of a mining plastic pipe as described in claim 6, characterized in that, The inner ring of the positioning plate is attached to the outer wall of the limiting boss.

8. The connection structure of a mining plastic pipe as described in claim 1, characterized in that, The sealing connector and sealing plug are inserted into the flared section, with one end facing outwards with a chamfer or rounded corner.

9. The connection structure of a mining plastic pipe as described in claim 1, characterized in that, Both the sealing joint and the sealing plug have connecting pipes extending from their ends.

10. The connection structure of a mining plastic pipe as described in claim 1, characterized in that, The sealing joint, sealing plug, and pipe connection section have the same inner diameter.

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