Large-diameter steel skeleton reinforced polyethylene composite pipe with protection function

Abstract

The utility model relates to the technical field of manufacturing of plastic pipe fittings, and discloses a large-diameter steel skeleton reinforced polyethylene composite pipe with a protection function, which comprises a pipe body and a sleeve arranged at the end part of the pipe body, first annular sawteeth are formed on the inner wall of the end part of the pipe body, second annular sawteeth are formed on the outer wall of the end part of the pipe body, and the first annular sawteeth and the second annular sawteeth are integrally formed. The sleeve is sleeved with a radial adjusting pipe. The utility model has the following advantages and effects: the outer protection layer made of the PP material has the effects of protection, wear resistance and impact resistance on the pipe body; when the buckling and pressing connector is disassembled and assembled, the meshing size of the first annular tooth and the third annular tooth and the meshing size of the second annular tooth and the fourth annular tooth are large, and damage is avoided; when the pipe fitting needs to serve, the meshing size between the first annular tooth and the third annular tooth and the meshing size between the second annular tooth and the fourth annular tooth are adjusted and reduced through the radial adjusting pipe and the axial adjusting pipe, so that the pipe fitting and the buckling joint are sealed and stable during service, and leakage is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipe manufacturing, in particular to a large-diameter steel skeleton reinforced polyethylene composite pipe with a protective function. Background Art

[0002] Composite pipes are made of polymer materials and other materials that are melted or wound together and then formed by plastic extrusion. The steel skeleton reinforced polyethylene composite pipe structure mainly consists of an inner lining layer, a steel wire reinforcement layer, a melt, and an outer protective layer. It uses polyethylene, steel wire and other materials as the main raw materials, and adds a melting process to make the steel wire and polyolefin in close contact. During use, the annular serrations on the composite pipe are engaged with the annular serrations of the crimping joint. If the engagement size of the annular serrations is too small, the composite pipe is easy to detach from the crimping joint during service; if the engagement size is too large, the serration structure will be damaged and destroyed, resulting in leakage between the composite pipe and the joint. Utility Model Content

[0003] The utility model aims to provide a large-caliber steel skeleton reinforced polyethylene composite pipe with a protective function, which has the effect of being able to adjust the bite size between the composite pipe and the joint.

[0004] The above technical purpose of the utility model is achieved through the following technical scheme: it includes a tube body, a sleeve arranged at the end of the tube body, the inner wall of the end of the tube body is formed with a first annular serration, the outer wall of the end of the tube body is formed with a second annular serration, the sleeve is outer-circularly provided with a radial adjustment tube, the inner wall diameter of the radial adjustment tube gradually decreases, a threaded tube is fixed in the radial adjustment tube, and the threaded tube is used for threaded connection to the crimping joint.

[0005] By adopting the above technical scheme, the corresponding crimping joint of the utility model includes an inner core tube and an outer sleeve, the outer wall of the inner core tube is formed with a third annular serration, the outer sleeve is formed with a fourth annular serration, and a second gap is formed between the inner core tube and the outer sleeve.

[0006] The tube body is inserted into the second gap, the first annular serrations are engaged with the third annular serrations, the second annular serrations are engaged with the fourth annular serrations, the threaded tube on the radial adjustment tube is threadedly connected to the inner core tube, the radial adjustment tube sleeves both the outer sleeve and the sleeve inside, the radial adjustment tube and the threaded tube are rotated, the inner wall of the radial adjustment tube applies radial force to both the outer sleeve and the sleeve, and the engagement size between the first annular serrations and the third annular serrations, and between the second annular serrations and the fourth annular serrations is adjusted and reduced, so that the engagement size is large during disassembly and assembly, and the engagement size is small when the composite tube is in service, so that the composite tube has good service stability.

[0007] The utility model is further configured as follows: the number of the first annular saw teeth is multiple.

[0008] The utility model is further configured as follows: the number of the second annular saw teeth is multiple.

[0009] The utility model is further configured as follows: the sleeve is made of elastic plastic.

[0010] By adopting the above technical solution, the sleeve can undergo a certain deformation when subjected to the force of the regulating tube.

[0011] The utility model is further configured as follows: an axial adjustment tube is threadedly connected to the outer wall of the sleeve, and the end of the axial adjustment tube abuts against the end of the radial adjustment tube.

[0012] By adopting the above technical solution, when the radial adjustment tube is adjusted to a suitable position, the axial adjustment tube is rotated so that its end is pressed against the end of the radial adjustment tube, generating axial tension on the tube body, further reducing the bite size.

[0013] The utility model is further configured as follows: a first gap is formed between the tube body and the sleeve, and the outer sleeve of the crimping joint is inserted into the first gap.

[0014] The utility model is further configured as follows: the pipe body comprises an inner lining layer, a steel wire reinforcement layer, a molten body, and an outer protective layer.

[0015] The utility model is further configured as follows: the material of the outer protective layer is PP.

[0016] By adopting the above technical solution, the outer protective layer is made of PP, which has the effects of wear resistance and impact resistance.

[0017] The beneficial effects of the utility model are as follows: the outer protective layer of PP material plays a role in protecting the pipe body and making it wear-resistant and impact-resistant; when disassembling and installing the crimping joint, the first annular teeth and the third annular teeth, as well as the second annular teeth and the fourth annular teeth have a large meshing size to avoid damage; when the pipe fitting needs to be put into service, the meshing size between the first annular teeth and the third annular teeth, as well as the second annular teeth and the fourth annular teeth can be adjusted and reduced through the radial adjustment tube and the axial adjustment tube, so that the pipe fitting is sealed, stable, and not prone to leakage when in service with the crimping joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] In the figure, 1, pipe fitting; 11, first annular serration; 12, second annular serration; 2, sleeve; 3, radial adjustment tube; 31, threaded tube; 4, axial adjustment tube; 5, crimping joint; 51, inner core tube; 51, third annular serration; 52, outer sleeve; 521, fourth annular serration; 6, first gap; 7, second gap. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] A large-diameter steel skeleton reinforced polyethylene composite pipe with protective function, such as Figure 1 As shown, it includes a tube body and a sleeve 2 arranged at the end of the tube body, the inner wall of the end of the tube body is formed with a plurality of first annular serrations 11, the outer wall of the end of the tube body is formed with a plurality of second annular serrations 12, the sleeve 2 is outer-mounted with a radial adjustment tube 3, the inner wall diameter of the radial adjustment tube 3 gradually decreases, and a threaded tube 31 is fixed inside the radial adjustment tube 3.

[0023] Furthermore, the sleeve 2 is made of elastic plastic.

[0024] Furthermore, an axial adjustment tube 4 is threadedly connected to the outer wall of the sleeve 2 , and an end of the axial adjustment tube 4 abuts against an end of the radial adjustment tube 3 .

[0025] Furthermore, a first gap 6 is formed between the tube body and the sleeve 2, and the outer sleeve 52 of the crimping connector 5 is inserted into the first gap 6.

[0026] Furthermore, the pipe body comprises an inner lining layer, a steel wire reinforcement layer, a molten body, and an outer protective layer, wherein the outer protective layer is made of PP.

[0027] The crimping connector 5 comprises an inner core tube and an outer sleeve 52. The outer wall of the inner core tube is formed with a third annular serration 51, and the outer sleeve 52 is formed with a fourth annular serration 521. A second gap 7 is formed between the inner core tube and the outer sleeve 52. The threaded tube 31 is used for threaded connection to the inner core tube of the crimping connector 5.

[0028] The working principle of the utility model is as follows: the tube body is inserted into the second gap 7, the first annular serration 11 is engaged with the third annular serration 51, the second annular serration 12 is engaged with the fourth annular serration 521, the threaded tube 31 on the radial adjustment tube 3 is threadedly connected to the inner core tube 51, the radial adjustment tube 3 sleeves the outer sleeve 52 and the sleeve 2 inside, the radial adjustment tube 3 and the threaded tube 31 are rotated, and the inner wall of the radial adjustment tube 3 applies radial force to the outer sleeve 2 and the sleeve 2, and adjusts and reduces the engagement size of the first annular serration 11 and the third annular serration 51, the second annular serration 12 and the fourth annular serration 521, so that the engagement size is large during disassembly and assembly, and the engagement size is small when the composite tube is in service, so that the composite tube can have good service stability.

Claims

1. A large-diameter steel skeleton reinforced polyethylene composite pipe with protective function, characterized by: The invention comprises a tube body and a sleeve (2) arranged at the end of the tube body, wherein the inner wall of the end of the tube body is formed with a first annular serration (11), and the outer wall of the end of the tube body is formed with a second annular serration (12), and the sleeve (2) is provided with a radial adjustment tube (3) outside, the inner wall diameter of the radial adjustment tube (3) gradually decreases, and a threaded tube (31) is fixed inside the radial adjustment tube (3), and the threaded tube (31) is used for being threadedly connected to a crimping joint (5).

2. The large-diameter steel skeleton reinforced polyethylene composite pipe with protective function according to claim 1, characterized in that: The number of the first annular saw teeth (11) is multiple.

3. The large-diameter steel skeleton reinforced polyethylene composite pipe with protective function according to claim 2, characterized in that: The number of the second annular saw teeth (12) is multiple.

4. The large-diameter steel skeleton reinforced polyethylene composite pipe with protective function according to claim 1, characterized in that: The sleeve (2) is made of elastic plastic.

5. The large-diameter steel skeleton reinforced polyethylene composite pipe with protective function according to claim 1, characterized in that: The outer wall of the sleeve (2) is threadedly connected with an axial adjustment tube (4), and the end of the axial adjustment tube (4) abuts against the end of the radial adjustment tube (3).

6. The large-diameter steel skeleton reinforced polyethylene composite pipe with protective function according to claim 1, characterized in that: A first gap (6) is formed between the tube body and the sleeve (2), and the outer sleeve (52) of the crimping connector (5) is inserted into the first gap (6).

7. The large-diameter steel skeleton reinforced polyethylene composite pipe with protective function according to claim 1, characterized in that: The pipe body comprises an inner lining layer, a steel wire reinforcement layer, a molten body and an outer protective layer.

8. The large-diameter steel skeleton reinforced polyethylene composite pipe with protective function according to claim 7, characterized in that: The outer protective layer is made of PP.

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